CN111921458B - Accurate charge device of petrochemical - Google Patents

Abstract

The invention discloses a petrochemical precise dosing device which comprises a reaction container, wherein the reaction container is connected with an oil inlet pipe, the oil inlet pipe is connected with an oil pump, the petrochemical precise dosing device also comprises a catalyst barrel positioned between the oil pump and the reaction container, the lower end of the catalyst barrel is communicated with a feed inlet of a shell, a discharge outlet at the lower end of the shell is communicated with the oil inlet pipe, a rotating roller driven by a motor is rotatably connected in the shell, the side surface of the rotating roller is provided with a plurality of movable plate mounting grooves, a plurality of movable plates capable of contacting with the inner side of the shell are hinged in the movable plate mounting grooves, a spring is connected between each movable plate and the rotating roller, and a scraper capable of contacting with the side surface of the rotating roller is arranged on the inner side of the shell. Due to the adoption of the technical scheme, the catalyst is directly brought into the oil inlet pipe along with the rotation of the rotary roller, the utilization rate of the catalyst is high, the required catalyst amount is calculated according to the flow of the raw oil in the oil inlet pipe, the rotating speed of the motor is further determined, and the accurate dosing is realized.

Description

Accurate charge device of petrochemical

Technical Field

The invention relates to the technical field of petrochemical industry, in particular to a precise chemical feeding device for petrochemical industry.

Background

The existing petrochemical production, especially the petroleum cracking production, is usually used for accommodating the reaction vessel of raw oil, the lower end of the reaction vessel is connected with an oil inlet pipe, the oil inlet pipe is connected with the output end of an oil pump, and the input end of the oil pump is connected with an oil supply device. When the device is used, the oil pump is started, the oil pump conveys the raw oil in the oil supply device to the reaction container, then the raw oil in the reaction container is heated to 700 ℃ to 1000 ℃, and the powdery catalyst is added to crack the hydrocarbon with larger relative molecular mass and higher boiling point into the hydrocarbon with smaller relative molecular mass and lower boiling point, and in the production process, the catalyst is continuously consumed, so that new catalyst needs to be continuously added.

In the prior art, the catalyst is added from the side of the reaction vessel, and the technical scheme has the following defects: the reaction vessel is internally in a high-temperature low-pressure environment and has rising airflow, and the powdery catalyst is discharged along with the rising airflow after being added, so that the utilization rate of the catalyst is reduced, the using amount of the catalyst is accurately calculated, and the quality of petroleum cracking products is reduced.

Disclosure of Invention

The invention aims to overcome the defects of the traditional technology and provides the precise chemical dosing device for petrochemical industry, which is convenient and accurate in dosing.

The aim of the invention is achieved by the following technical measures: the utility model provides an accurate charge device of petrochemical, includes reaction vessel, reaction vessel is connected with into oil pipe, it is connected with the oil pump on the oil pipe to advance, still including being located the catalyst bucket between oil pump and the reaction vessel, catalyst bucket lower extreme intercommunication has the feed inlet of shell, the discharge gate of shell lower extreme with advance oil pipe intercommunication, the shell internal rotation is connected with the commentaries on classics roller by motor drive, a plurality of fly leaf mounting grooves have been seted up to commentaries on classics roller side, it has a plurality of fly leaves that can contact with the shell inboard to articulate in the fly leaf mounting groove, be connected with the spring between fly leaf and the commentaries on classics roller, the shell inboard is installed can with the scraper blade of commentaries on classics roller side contact. Due to the adoption of the technical scheme, during use, the catalyst in the catalyst barrel falls into the gap between the two movable plates, and is brought into the oil inlet pipe along with the rotation of the rotary roller, the scraper scrapes the raw oil on the rotary roller, so that the raw oil is prevented from being brought into the catalyst barrel, when the movable plates move to the scraper, the movable plates are squeezed into the movable plate mounting grooves under the action of the scraper, at the moment, the springs are compressed, when the movable plates leave the scraper, and under the action of the springs, the movable plates leave the movable plate mounting grooves.

The roller is hinged to a first connecting rod, a first limiting block is connected to the first connecting rod, a first end rod is connected to the first limiting block, a second connecting rod is hinged to the inner side of the movable plate, a second limiting block is connected to the second connecting rod, a second end rod is connected to the second limiting block, one end of the spring is sleeved on the first end rod and abuts against the first limiting block, and the other end of the spring is sleeved on the second end rod and abuts against the second limiting block. When the movable plate moves to the scraper, the movable plate is squeezed into the movable plate mounting groove under the action of the scraper, at the moment, the spring is compressed, when the first end rod is in contact with the second end rod, the movable plate stops moving, and at the moment, the outer side face of the movable plate is flush with the outer side face of the rotary roller.

The sleeve is sleeved between the first connecting rod and the second connecting rod, the first limiting block is in sliding fit with the inner side of the sleeve and can abut against one end of the sleeve, and the second limiting block is in sliding fit with the inner side of the sleeve and can abut against the other end of the sleeve. When the movable plate leaves the scraper, the movable plate leaves the movable plate mounting groove under the action of the spring, and when the first limiting block abuts against one end of the sleeve and the second limiting block abuts against the other end of the sleeve, the movable plate stops moving, and at the moment, the movable plate is at an initial position.

The rotating roller is connected with a rotating roller rotating shaft, a rotating roller rotating shaft through hole for allowing the rotating roller rotating shaft to penetrate is formed in the shell, and the first connecting rod is located on the rotating roller rotating shaft. The distance between the rotating shaft of the rotating roller and the movable plate is far, so that more components are convenient to mount.

The movable plate is connected with a movable plate rotating shaft, a movable plate rotating shaft through hole allowing the movable plate rotating shaft to penetrate is formed in the rotating roller, a notch is formed in one end, penetrating through the movable plate rotating shaft through hole, of the movable plate rotating shaft, a ring groove used for avoiding the movable plate rotating shaft is formed in the inner side of the shell, and a protruding portion matched with the notch is formed in the upper portion of the ring groove. When the scraper blade is used, when the movable plate moves to the scraper blade, the movable plate is squeezed into the movable plate mounting groove, at the moment, the movable plate rotating shaft rotates along with the movable plate, when the movable plate moves to the upper part, the movable plate rotating shaft also moves to the upper part of the annular groove, at the moment, the protruding part is matched with the notch, the movable plate rotating shaft is prevented from rotating, the movable plate cannot be squeezed into the movable plate mounting groove due to caked catalysts and the like, and the movable plate is guaranteed to be normally brought under the catalyst belt.

The radian of the convex part is 180 degrees. The movable plate can not rotate when being arranged at the upper part, so that the catalyst can be normally carried under the belt.

The roller is characterized in that two end faces on the inner side of the shell are respectively provided with a rotating groove, one end of the rotating roller is positioned in one rotating groove, the other end of the rotating roller is positioned in the other rotating groove, the width of the movable plate is smaller than that of the rotating roller, one side of the movable plate is in contact with one end face on the inner side of the shell, and the other side of the movable plate is in contact with the other end face on the inner side of the shell. When the movable plate type oil leakage prevention device is used, the end part of the rotary roller is in contact with the rotary groove, the side part of the movable plate is in contact with the end face of the inner side of the shell, the airtightness between the parts is guaranteed, and oil leakage is avoided.

The rotary roller is connected with a plurality of tectorial membranes formed by TPEE, one end of each tectorial membrane is parallel and level with the end part of the movable plate, the other end of the tectorial membrane is parallel and level with the edge of the adjacent movable plate mounting groove, one side edge of the tectorial membrane contacts with one end surface of the inner side of the shell, and the other side edge of the tectorial membrane contacts with the other end surface of the inner side of the shell. When the rotary roller is used, the movable plate is hinged to the rotary roller, the diameter of one side edge of the movable plate mounting groove close to the movable plate rotating shaft is smaller, a sharp corner is easily formed on the outer side of the movable plate mounting groove, a gap is easily formed by fracture, and the film covers the movable plate and the rotary roller to cover the gap, so that the sealing performance is improved, impurities are prevented from entering, and the movable plate motion is prevented from being influenced.

The outer side surface of the movable plate is arc-shaped, and the diameter of the outer side surface of the movable plate is the same as that of the rotary roller; one side of the movable plate, which is close to the movable plate rotating shaft, is an arc surface, the axis of one side of the movable plate, which is close to the movable plate rotating shaft, is superposed with the axis of the movable plate rotating shaft, one side of the movable plate, which is far away from the movable plate rotating shaft, is an arc surface, and the axis of one side of the movable plate, which is far away from the movable plate rotating shaft, is superposed with the axis of the movable plate rotating shaft; the shape of the edge of the movable plate mounting groove is matched with that of the movable plate. When the movable plate rotates around the movable plate rotating shaft, one side of the movable plate close to the movable plate rotating shaft and one side of the movable plate far away from the movable plate rotating shaft can be matched with the edge of the movable plate mounting groove, and oil leakage is avoided.

The upper end of the catalyst barrel is connected with a flange plate, a barrel cover is detachably connected to the flange plate, and a sealing gasket is arranged between the flange plate and the barrel cover; at least one side of the lower end of the catalyst barrel is obliquely arranged, and the catalyst barrel is made of organic glass. When the catalyst bucket is used, the catalyst is placed in the catalyst bucket, so that external dust and the like are prevented from falling into the catalyst to pollute the catalyst, and the catalytic efficiency of the catalyst is improved.

In conclusion, due to the adoption of the technical scheme, when the catalyst barrel is used, the catalyst in the catalyst barrel falls into the gap between the two movable plates and is directly brought into the oil inlet pipe along with the rotation of the rotary roller, the utilization rate of the catalyst is high, the required catalyst amount is calculated according to the flow of the raw oil in the oil inlet pipe, the rotating speed of the motor is further determined, and the accurate dosing is realized.

Drawings

The invention is further described with reference to the following figures and detailed description:

FIG. 1 is a schematic structural diagram of a precise chemical dosing device for petrochemical engineering;

FIG. 2 is a schematic diagram of the internal structures of a catalyst barrel and a housing in the precise chemical dosing device for petrochemical engineering;

FIG. 3 is a schematic diagram of the internal structure of a turntable in the precise chemical dosing device for petrochemical engineering;

FIG. 4 is a schematic view of an internal amplification structure of a turntable in the precise chemical dosing device in petrochemical industry;

FIG. 5 is a schematic view of the structure in section A-A of FIG. 4;

FIG. 6 is an enlarged schematic view of a portion B of FIG. 4;

FIG. 7 is a schematic structural diagram of a turntable in the precise chemical dosing device of the invention;

FIG. 8 is a schematic diagram of the internal structure of the housing of the precise chemical dosing device of the invention;

FIG. 9 is a schematic structural view of a use state of a turntable in the precise chemical dosing device for petrochemical industry.

In the figure: 1-a reaction vessel; 2-raw oil; 3-an oil inlet pipe; 4-a catalyst barrel; 5-an oil pump; 6-barrel cover; 7-a sealing gasket; 8-a flange plate; 9-a catalyst; 10-a housing; 11-a feed inlet; 12-a rotating roller shaft; 13-rotating the roller; 14-movable plate rotating shaft; 15-a movable plate; 16-a scraper; 17-a discharge hole; 18-a first link; 19-a first stopper; 20-a first end bar; 21-a sleeve; 22-a second end bar; 23-a second stopper; 24-a second link; 25-a spring; 26-coating a film; 27-rotary groove; 28-ring groove; 29-notch; 30-a movable plate mounting groove; 31-a movable plate rotating shaft through hole; 32-a boss; 33-roller shaft through hole.

Detailed Description

As shown in the attacheddrawing 1, a petrochemical accurate dosing device, including being used for holding thereaction vessel 1 ofraw oil 2, the 1 lower extreme of reaction vessel is connected with intooil pipe 3, advances to be connected with the output ofoil pump 5 onoil pipe 3, and the input and the oil supply unit ofoil pump 5 are connected, andreaction vessel 1,oil pump 5 and oil supply unit all adopt prior art, and no longer give unnecessary details here. In use, theoil pump 5 is started, and theoil pump 5 conveys the raw oil in the oil supply device to thereaction vessel 1.

As shown in the attached figure 2, acatalyst barrel 4 made of organic glass is arranged between the output end of theoil pump 5 and thereaction container 1, so that the quantity of thecatalyst 9 in thecatalyst barrel 4 can be observed conveniently when the device is used, and delay in production can be avoided even if thecatalyst 9 is added. The lower end of thecatalyst barrel 4 is communicated with afeed inlet 11 at the upper end of theshell 10, and adischarge outlet 17 at the lower end of theshell 10 is communicated with theoil inlet pipe 3.

The upper end of thecatalyst barrel 4 is connected with aflange plate 8, abarrel cover 6 is detachably connected to theflange plate 8, preferably, thebarrel cover 6 is mounted on theflange plate 8 through a bolt and nut structure, and a sealinggasket 7 made of rubber is arranged between theflange plate 8 and thebarrel cover 6. When the catalyst bucket is used, thecatalyst 9 is placed in thecatalyst bucket 4, so that external dust and the like are prevented from falling into thecatalyst 9 to pollute the catalyst, and the catalysis efficiency of thecatalyst 9 is improved.

At least one side slope of 4 lower extremes of catalyst bucket sets up, during the use, makes things convenient forcatalyst 9 to slide to feedinlet 11 along with the one side of slope setting, avoidscatalyst 9 to form the siltation incatalyst bucket 4.

As shown in fig. 3, a rotatingroller 13 driven by a motor is rotatably connected in thehousing 10, specifically, the rotatingroller 13 is connected with a rotatingroller rotating shaft 12, a rotating roller rotating shaft throughhole 33 through which the rotatingroller rotating shaft 12 passes is formed in thehousing 10, and an output end of the motor is connected with the rotatingroller rotating shaft 12.

As shown in fig. 4 and 5, the side surface of the rotatingroller 13 is provided with a plurality of movableplate mounting grooves 30, preferably, the number of the movableplate mounting grooves 30 is six, and the six movableplate mounting grooves 30 are uniformly arranged along the circumferential direction of the rotatingroller 13.

A plurality ofmovable plates 15 capable of contacting with the inner side of thehousing 10 are hinged in the movableplate mounting groove 30, specifically, themovable plates 15 are connected with movableplate rotating shafts 14, therotating rollers 13 are provided with movable plate rotating shaft throughholes 31 for allowing the movableplate rotating shafts 14 to pass through, the outer side surfaces of themovable plates 15 are arc-shaped, the diameter of the outer side surfaces of themovable plates 15 is the same as that of therotating rollers 13, and after themovable plates 15 enter the movableplate mounting groove 30, the outer side surfaces of themovable plates 15 are flush with the outer side surfaces of thehousing 10.

One side of themovable plate 15 close to the movableplate rotating shaft 14 is an arc surface, the axis of one side of themovable plate 15 close to the movableplate rotating shaft 14 coincides with the axis of the movableplate rotating shaft 14, one side of themovable plate 15 far away from the movableplate rotating shaft 14 is an arc surface, and the axis of one side of themovable plate 15 far away from the movableplate rotating shaft 14 coincides with the axis of the movableplate rotating shaft 14; the shape of the edge of the movableplate mounting groove 30 is matched with themovable plate 15. In use, when themovable plate 15 rotates around the movableplate rotating shaft 14, both the side of themovable plate 15 close to the movableplate rotating shaft 14 and the side of themovable plate 15 far from the movableplate rotating shaft 14 can be matched with the edge of the movableplate mounting groove 30, so as to avoid oil leakage.

Thescraper 16 that can contact with theroller 13 side is installed to theshell 10 inboard, is connected withspring 25 betweenfly leaf 15 and theroller 13, specifically, it has first connectingrod 18 to articulate on theroller 13, and preferred, first connectingrod 18 is located theroller pivot 12, and the distance betweenroller pivot 12 andfly leaf 15 is far away, more parts of easy to assemble.

First stopper 19 is connected with on the first connectingrod 18, is connected withfirst end pole 20 on thefirst stopper 19, and first connectingrod 18,first stopper 19 andfirst end pole 20's shape are cylindrical, and wherein, the diameter of first connectingrod 18 is the same with the diameter offirst end pole 20, and the diameter offirst stopper 19 is greater than the diameter of first connectingrod 18. The inner side of themovable plate 15 is hinged with a second connectingrod 24, the second connectingrod 24 is connected with a secondlimiting block 23, the secondlimiting block 23 is connected with asecond end rod 22, the second connectingrod 24, the secondlimiting block 23 and thesecond end rod 22 are all cylindrical in shape, the diameter of the second connectingrod 24 is the same as that of thesecond end rod 22, and the diameter of the secondlimiting block 23 is larger than that of the second connectingrod 24. One end of thespring 25 is sleeved on thefirst end rod 20 and abuts against the first limitingblock 19, and the other end of thespring 25 is sleeved on thesecond end rod 22 and abuts against the second limitingblock 23.

Thesleeve 21 is sleeved between the first connectingrod 18 and the second connectingrod 24, the firstlimiting block 19 is in sliding fit with the inner side of thesleeve 21 and can abut against one end of thesleeve 21, and the secondlimiting block 23 is in sliding fit with the inner side of thesleeve 21 and can abut against the other end of thesleeve 21.

When the device is used, thecatalyst 9 in thecatalyst barrel 4 falls into the gap between the twomovable plates 15 and is brought into theoil inlet pipe 3 along with the rotation of therotary roller 13, and thescraper 16 scrapes theraw oil 2 on therotary roller 13, so that theraw oil 2 is prevented from being brought into thecatalyst barrel 4.

When themovable plate 15 moves to thescraper 16, themovable plate 15 is pushed into the movableplate mounting groove 30 by thescraper 16, at this time, thespring 25 is compressed, and when thefirst end rod 20 contacts with thesecond end rod 22, themovable plate 15 stops moving, at this time, the outer side surface of themovable plate 15 is flush with the outer side surface of the rotatingroller 13.

When themovable plate 15 leaves thescraper 16, themovable plate 15 leaves the movableplate mounting groove 30 under the action of thespring 25, and when the first stopper 19 abuts against one end of thesleeve 21 and the second stopper 23 abuts against the other end of thesleeve 21, themovable plate 15 stops moving, and at this time, themovable plate 15 is at the initial position.

Two end surfaces of the inner side of theshell 10 are respectively provided with arotating groove 27, one end of the rotatingroller 13 is positioned in onerotating groove 27, the other end of the rotatingroller 13 is positioned in the otherrotating groove 27, the width of themovable plate 15 is smaller than that of the rotatingroller 13, one side of themovable plate 15 is in contact with one end surface of the inner side of theshell 10, and the other side of themovable plate 15 is in contact with the other end surface of the inner side of theshell 10.

When the device is used, the end part of therotary roller 13 is contacted with therotary groove 27, and the side part of themovable plate 15 is contacted with the end surface of the inner side of theshell 10, so that the tightness among the parts is ensured, and oil leakage is avoided.

As shown in fig. 6 and 7, the rotatingroller 13 is connected with a plurality ofcoating films 26 formed by TPEE, one end of eachcoating film 26 is flush with the end of themovable plate 15, the other end of eachcoating film 26 is flush with the edge of the adjacent one of the movableplate mounting grooves 30, one side edge of eachcoating film 26 is in contact with one end surface of the inner side of theshell 10, and the other side edge of eachcoating film 26 is in contact with the other end surface of the inner side of theshell 10. TPEE has good mechanical property and elasticity, and simultaneously has good oil resistance.

When the device is used, themovable plate 15 is hinged to therotating roller 13, the diameter of one side edge of the movableplate mounting groove 30 close to the movableplate rotating shaft 14 is small, a sharp corner is easily formed on the outer side of the movable plate mounting groove, the movable plate mounting groove is easily broken to form a gap, and the film covering 26 covers themovable plate 15 and therotating roller 13 to cover the gap, so that the tightness is improved, impurities are prevented from entering, and the movement of themovable plate 15 is prevented from being influenced.

Agap 29 is formed at one end of the movableplate rotating shaft 14 penetrating through the movable plate rotating shaft throughhole 31, anannular groove 28 for avoiding the movableplate rotating shaft 14 is formed on the inner side of thehousing 10, and a convex portion 32 matched with thegap 29 is arranged at the upper portion of theannular groove 28.

As shown in fig. 8, in use, when themovable plate 15 moves to thescraper 16, themovable plate 15 is squeezed into the movableplate mounting groove 30, at this time, the movableplate rotating shaft 14 rotates with themovable plate 15, when themovable plate 15 moves to the upper portion, the movableplate rotating shaft 14 also moves to the upper portion of theannular groove 28, at this time, the protrusion 32 is matched with thenotch 29 to prevent the movableplate rotating shaft 14 from rotating, so that themovable plate 15 is not squeezed into the movableplate mounting groove 30 due to the agglomeratedcatalyst 9 and the like, and themovable plate 15 is ensured to normally take thecatalyst 9 down.

Preferably, the arc of the boss 32 is 180 degrees. Themovable plate 15 cannot rotate when being at the upper part, so that thecatalyst 9 is ensured to be normally carried downwards.

In summary, the present invention is not limited to the above-described embodiments. Those skilled in the art can make several changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications should fall within the scope of the present invention.

Claims (1)

1. The utility model provides an accurate charge device of petrochemical, includes reaction vessel (1), reaction vessel (1) is connected with into oil pipe (3), it is connected with oil pump (5), its characterized in that on oil pipe (3) to advance: the device is characterized by further comprising a catalyst barrel (4) positioned between the oil pump (5) and the reaction container (1), wherein the lower end of the catalyst barrel (4) is communicated with a feed inlet (11) of the shell (10), a discharge outlet (17) at the lower end of the shell (10) is communicated with the oil inlet pipe (3), a rotating roller (13) driven by a motor is connected in the shell (10) in a rotating manner, a plurality of movable plate mounting grooves (30) are formed in the side surface of the rotating roller (13), a plurality of movable plates (15) capable of contacting with the inner side of the shell (10) are hinged in the movable plate mounting grooves (30), a spring (25) is connected between each movable plate (15) and the rotating roller (13), and a scraper (16) capable of contacting with the side surface of the rotating roller (13) is mounted on the inner side of the shell (10);

a first connecting rod (18) is hinged to the rotating roller (13), a first limiting block (19) is connected to the first connecting rod (18), a first end rod (20) is connected to the first limiting block (19), a second connecting rod (24) is hinged to the inner side of the movable plate (15), a second limiting block (23) is connected to the second connecting rod (24), a second end rod (22) is connected to the second limiting block (23), one end of the spring (25) is sleeved on the first end rod (20) and abuts against the first limiting block (19), and the other end of the spring (25) is sleeved on the second end rod (22) and abuts against the second limiting block (23);

a sleeve (21) is sleeved between the first connecting rod (18) and the second connecting rod (24), the first limiting block (19) is in sliding fit with the inner side of the sleeve (21) and can abut against one end of the sleeve (21), and the second limiting block (23) is in sliding fit with the inner side of the sleeve (21) and can abut against the other end of the sleeve (21);

the rotating roller (13) is connected with a rotating roller rotating shaft (12), a rotating roller rotating shaft through hole (33) allowing the rotating roller rotating shaft (12) to penetrate through is formed in the shell (10), and the first connecting rod (18) is located on the rotating roller rotating shaft (12);

the movable plate (15) is connected with a movable plate rotating shaft (14), a movable plate rotating shaft through hole (31) allowing the movable plate rotating shaft (14) to penetrate through is formed in the rotating roller (13), a notch (29) is formed in one end, penetrating through the movable plate rotating shaft through hole (31), of the movable plate rotating shaft (14), an annular groove (28) used for avoiding the movable plate rotating shaft (14) is formed in the inner side of the shell (10), and a protruding portion (32) matched with the notch (29) is formed in the upper portion of the annular groove (28);

the radian of the convex part (32) is 180 degrees;

two end faces of the inner side of the shell (10) are respectively provided with a rotating groove (27), one end of the rotating roller (13) is positioned in one rotating groove (27), the other end of the rotating roller (13) is positioned in the other rotating groove (27), the width of the movable plate (15) is smaller than that of the rotating roller (13), one side of the movable plate (15) is in contact with one end face of the inner side of the shell (10), and the other side of the movable plate (15) is in contact with the other end face of the inner side of the shell (10);

the rotary roller (13) is connected with a plurality of coating films (26) formed by TPEE, one end of each coating film (26) is flush with the end part of the movable plate (15), the other end of each coating film (26) is flush with the edge of one adjacent movable plate mounting groove (30), one side edge of each coating film (26) is in contact with one end surface of the inner side of the shell (10), and the other side edge of each coating film (26) is in contact with the other end surface of the inner side of the shell (10);

the outer side surface of the movable plate (15) is arc-shaped, and the diameter of the outer side surface of the movable plate (15) is the same as that of the rotary roller (13); one side, close to the movable plate rotating shaft (14), of the movable plate (15) is an arc surface, the axis of one side, close to the movable plate rotating shaft (14), of the movable plate (15) is superposed with the axis of the movable plate rotating shaft (14), one side, far away from the movable plate rotating shaft (14), of the movable plate (15) is an arc surface, and the axis of one side, far away from the movable plate rotating shaft (14), of the movable plate (15) is superposed with the axis of the movable plate rotating shaft (14); the shape of the edge of the movable plate mounting groove (30) is matched with that of the movable plate (15);

the upper end of the catalyst barrel (4) is connected with a flange plate (8), the flange plate (8) is detachably connected with a barrel cover (6), and a sealing gasket (7) is arranged between the flange plate (8) and the barrel cover (6); at least one side of the lower end of the catalyst barrel (4) is obliquely arranged, and the catalyst barrel (4) is made of organic glass;

when the device is used, the catalyst (9) in the catalyst barrel (4) falls into a gap between the two movable plates (15) and is brought into the oil inlet pipe (3) along with the rotation of the rotary roller (13), and the scraper (16) scrapes the raw oil (2) on the rotary roller (13) to avoid the raw oil (2) from being brought into the catalyst barrel (4);

when the movable plate (15) moves to the scraper (16), the movable plate (15) is squeezed into the movable plate mounting groove (30) under the action of the scraper (16), at the moment, the spring (25) is compressed, when the first end rod (20) is contacted with the second end rod (22), the movable plate (15) stops moving, and at the moment, the outer side face of the movable plate (15) is flush with the outer side face of the rotary roller (13);

when the movable plate (15) leaves the scraper (16), the movable plate (15) leaves the movable plate mounting groove (30) under the action of the spring (25), when the first limiting block (19) abuts against one end of the sleeve (21) and the second limiting block (23) abuts against the other end of the sleeve (21), the movable plate (15) stops moving, and at the moment, the movable plate (15) is at an initial position;

the end part of the rotary roller (13) is contacted with the rotary groove (27), and the side part of the movable plate (15) is contacted with the end surface of the inner side of the shell (10), so that the tightness among the components is ensured, and oil leakage is avoided;

because the movable plate (15) is hinged with the rotating roller (13), the diameter of one side edge of the movable plate mounting groove (30) close to the movable plate rotating shaft (14) is smaller, the outer side of the movable plate mounting groove is easy to form a sharp corner and is easy to break to form a gap, and the coating film (26) covers the movable plate (15) and the rotating roller (13) to cover the gap, so that the tightness is improved, impurities are prevented from entering, and the movement of the movable plate (15) is prevented from being influenced;

when the movable plate (15) moves to the scraper (16), the movable plate (15) is squeezed into the movable plate mounting groove (30), at the moment, the movable plate rotating shaft (14) rotates along with the movable plate (15), when the movable plate (15) moves to the upper part, the movable plate rotating shaft (14) also moves to the upper part of the annular groove (28), at the moment, the protruding part (32) is matched with the notch (29) to prevent the movable plate rotating shaft (14) from rotating, so that the movable plate (15) cannot be squeezed into the movable plate mounting groove (30) due to the agglomerated catalyst (9), and the movable plate (15) is guaranteed to be normally arranged below the catalyst (9).

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