Disclosure of Invention
The invention aims to solve the problem of providing the reciprocating pump with smaller stress, lower damage frequency and longer service life among the pump body, the machine body and the box body.
The invention solves the problems by adopting the technical scheme that the low-stress reciprocating pump comprises a body and a pump body arranged at the output end of the body, wherein the body comprises at least one group of plunger assemblies which reciprocate in the pump body,
The machine body comprises a thick plate arranged on two sides and a first connecting bolt penetrating through the thick plate, wherein the front end of the first connecting bolt is fixedly connected into the pump body so as to fix the machine body and the pump body and concentrate stress into the thick plate;
The plunger assembly is sleeved with a plunger body; the machine body comprises a double-vertical-plate structure arranged at the front end, the box body is arranged in the double-vertical-plate structure so as to be positioned radially, the double-vertical-plate structure comprises a compression flange, one end of the box body is compressed by the compression flange, and the other end of the box body abuts against the pump body so as to reduce stress in the box body.
Compared with the prior art, the machine body comprises the thick plate and the first connecting bolt penetrating through the thick plate, the front end of the first connecting bolt is fixedly connected into the pump body, so that in the connection of the machine body and the pump body, stress is mainly borne by the machine body, the stress borne by the pump body is small, the stress area is small, the probability of cracking and damaging the pump body is reduced, the thickness of the thick plate is larger than that of other positions of the machine body, the strength is higher, the stress can be borne, the probability of cracking and damaging the machine body is reduced, the machine body comprises a double-vertical-plate structure, and the box body is arranged in the double-vertical-plate structure and is tightly pressed through the pressing flange, so that the box body, the machine body and the pump body are connected into a whole, the radial force and the axial force borne by the box body are reduced, and the cracking and damaging probability of the box body is reduced.
The low-stress reciprocating pump further comprises a conical positioning sleeve, wherein the conical positioning sleeve comprises a conical body arranged at the front end, a conical hole is formed in the rear end of the inside of the pump body, and the conical outer wall of the conical body is attached to the conical inner wall of the conical hole so as to reduce stress in the box body.
The low-stress reciprocating pump comprises a first bolt hole penetrating through the inside of the thick plate and a force application step arranged at one end far away from the pump body, wherein the first connecting bolt penetrates through the first bolt hole, and the rear end of the first connecting bolt is fixedly connected to the force application step through a nut so as to tighten the pump body.
The invention discloses a low-stress reciprocating pump, wherein the double-vertical-plate structure comprises a first vertical plate, a second vertical plate and a second connecting bolt, the first vertical plate is attached to the rear end face of a pump body, the second vertical plate is arranged behind the first vertical plate, the first vertical plate and the second vertical plate are respectively provided with a positioning hole corresponding to the positions, the positioning holes are matched with the outer side face of a box body, mounting holes corresponding to the positions are respectively formed in a compression flange, the first vertical plate and the second vertical plate, and the second connecting bolt is used for connecting the compression flange, the first vertical plate and the second vertical plate with the pump body through the mounting holes.
The low-stress reciprocating pump comprises a box body step arranged at two ends respectively, wherein a first step hole is formed in the rear end face of a pump body, a second step hole is formed in the front end face of a compression flange, the box body step at the front end is matched with the first step hole, and the box body step at the rear end is matched with the second step hole.
The invention discloses a low-stress reciprocating pump, wherein the double-vertical-plate structure further comprises an adjusting nut arranged in a compression flange, the box body comprises box body filler arranged inside, the conical positioning sleeve comprises a tube-shaped body arranged at the rear end, and the tube-shaped body and the adjusting nut are used for limiting the position of the box body filler from the front end and the rear end.
The low-stress reciprocating pump comprises a first channel, a second channel and a third channel which are sequentially arranged in the low-stress reciprocating pump from front to back, wherein a liquid inlet raft is arranged in the first channel, a liquid inlet spring is arranged in the second channel, and the front end of a plunger assembly can be arranged in the first channel and the second channel in a reciprocating manner.
The invention discloses a low-stress reciprocating pump, wherein the pump body further comprises a valve hole arranged at the front end of the interior, a combined valve and a valve pressing sleeve arranged at the front end of the combined valve are arranged in the valve hole, the combined valve and the valve pressing sleeve are used for controlling liquid outlet in a matched mode with a liquid inlet raft, and a front flange is arranged on the front end face of the pump body.
The invention discloses a low-stress reciprocating pump, wherein a machine body further comprises a power end crankshaft, a connecting rod arranged on the power end crankshaft and a piston structure matched with the connecting rod, and the plunger assembly is connected with the piston structure.
Detailed Description
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Furthermore, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.
Also, in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the azimuth or positional relationships indicated in the drawings, which are merely for convenience of description and to simplify the description, and do not denote or imply that the apparatus or elements in question must have a particular azimuth, be configured and operated in a particular azimuth, and thus the terms should not be construed as limiting the invention, and in the second aspect, the terms "a" and "an" should be construed as "at least one" or "one or more," i.e., in one embodiment, the number of one element may be one, while in another embodiment, the number of the element may be plural, and the term "a" should not be construed as limiting the number.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Referring to fig. 1-9, a low stress reciprocating pump comprises a body 1 and a pump body 2 arranged at the output end of the body 1, wherein the body 1 comprises at least one group of plunger assemblies 11 reciprocating in the pump body 2,
The machine body 1 comprises a thick plate 12 arranged on two sides and a first connecting bolt 13 penetrating through the thick plate 12, wherein the front end of the first connecting bolt 13 is fixedly connected in the pump body 2 so as to fix the machine body 1 and the pump body 2 and concentrate stress in the thick plate 12;
The device further comprises a box body 3 sleeved outside the plunger assembly 11, the machine body 1 comprises a double-vertical-plate structure 14 arranged at the front end, the box body 3 is arranged in the double-vertical-plate structure 14 so as to enable the box body 3 to be positioned radially, the double-vertical-plate structure 14 comprises a pressing flange 141, one end of the box body 3 is pressed by the pressing flange 141, and the other end of the box body 3 abuts against the pump body 2 so as to reduce stress in the box body 3.
In actual use, the machine body 1 comprises a thick plate 12 and a first connecting bolt 13 penetrating through the thick plate 12, wherein the front end of the first connecting bolt 13 is fixedly connected in the pump body 2, so that in the connection of the machine body 1 and the pump body 2, stress is mainly borne by the machine body 1, the pump body 2 bears smaller stress and has smaller stress area, the probability of cracking damage of the pump body 2 is reduced, the thickness of the thick plate 12 is larger than that of other positions of the machine body 1, the strength is higher, the stress can be borne, the probability of cracking damage of the machine body 1 is reduced, the machine body 1 comprises a double-standing plate structure 14, the box body 3 is arranged in the double-standing plate structure 14 and is pressed by a pressing flange 141, the box body 3 is connected with the machine body 1 and the pump body 2 into a whole, the radial force and the axial force borne by the box body 3 are reduced, and the probability of cracking damage of the box body 3 is reduced.
With continued reference to fig. 4,5 and 8, the pump further includes a tapered positioning sleeve 4, the tapered positioning sleeve 4 includes a tapered body 41 disposed at a front end, a tapered hole 21 is disposed at a rear end of the pump body 2, and a tapered outer wall of the tapered body 41 is attached to a tapered inner wall of the tapered hole 21 so as to reduce stress in the box 3.
When the novel conical locating sleeve is used, the conical outer wall of the conical body 41 can be attached to the conical inner wall of the conical hole 21 through the design of the conical body 41 at the front end of the conical locating sleeve 4, so that the stress born by the connection of the box body 3, the machine body 1 and the pump body 2 and the operation is shared, and the probability of cracking and damaging the three is reduced.
With continued reference to fig. 1-3, the thick plate 12 includes a first bolt hole 121 penetrating through the thick plate and a force step 122 disposed at an end far from the pump body 2, and the first connecting bolt 13 penetrates through the first bolt hole 121 and the rear end is fixedly connected to the force step 122 by a nut so as to tighten the pump body 2.
When the pump is used, through the design, the stress concentration points for connecting the machine body 1 and the pump body 2 can be arranged on the thick plate 12 with high strength at two sides, so that the machine body 1 and the pump body 2 are protected.
It should be noted that the specific connection method of the machine body 1 and the pump body 2 is as follows:
s1, threading two sides of the rear end face of a pump body 2;
s2, enabling the first connecting bolt 13 to pass through the first bolt hole 121 and enabling the front end to be connected with the pump body 2;
s3, arranging a nut at the rear end of the first bolt hole 121, and tightly matching the nut with the force step 122;
s4, at least two groups of first connecting bolts 13 are arranged in each thick plate 12.
With continued reference to fig. 4-7, the dual-riser structure 14 includes a first riser 142 attached to a rear end surface of the pump body 2, a second riser 143 disposed behind the first riser 142, and a second connecting bolt 144, wherein the first riser 142 and the second riser 143 are respectively provided with a positioning hole 145 corresponding to the position, the positioning holes 145 are matched with an outer side surface of the box body 3, mounting holes 146 corresponding to the position are respectively provided in the compression flange 141, the first riser 142 and the second riser 143, and the second connecting bolt 144 connects the compression flange 141, the first riser 142 and the second riser 143 with the pump body 2 through the mounting holes 146.
When the novel letter body 3 is used, the letter body 3 is connected with the pump body 2 through the compression effect of the compression flange 141, the second connecting bolts 144 penetrate through the mounting holes 146 in the compression flange 141, the first vertical plate 142 and the second vertical plate 143 at one time and are fixedly connected with corresponding holes in the pump body 2, compared with the case that a fastener is directly arranged on the body of the letter body 3 and is connected with the pump body 2, the compression flange 141 is adopted to enable the radial force and the axial force borne by the letter body 3 to be smaller, so that the cracking of the letter body 3 is prevented, the positioning holes 145 are matched with the outer side surface of the letter body 3, the position of the letter body 3 is enabled to be more accurate, the outer walls of the letter body 3 are wrapped by the positioning holes 145 in the first vertical plate 142 and the second vertical plate 143 which are arranged front and back, the radial tension of the letter body 3 is limited in the front and back positions, and the cracking of the letter body 3 is further prevented.
It should be noted that, referring to fig. 1 and 4, a plurality of second connecting bolts 144 may be uniformly disposed around the box body 3 on the pressing flange 141 according to actual stress conditions, and preferably, the second connecting bolts 144 are implemented as 4 or 6.
With continued reference to fig. 4-7, the case 3 includes case steps 31 respectively disposed at two ends, a first step hole 22 is disposed on a rear end surface of the pump body 2, a second step hole 1411 is disposed on a front end surface of the compression flange 141, the case step 31 at the front end is matched with the first step hole 22, and the case step 31 at the rear end is matched with the second step hole 1411.
When in use, the letter steps 31 at the front end and the rear end are arranged, and the first step holes 22 and the second step holes 1411 are arranged, so that the two ends of the letter body 3 are positioned, the positioning effect is better under the cooperation of the letter body 3 and the positioning holes 145, and the letter body steps 31 at the two ends also have a sealing effect.
With continued reference to fig. 4-7, the double riser structure 14 further includes an adjustment nut 147 disposed in the compression flange 141, the box 3 includes a box filler 32 disposed therein, the tapered positioning sleeve 4 includes a tubular body 42 disposed at a rear end, and the tubular body 42 and the adjustment nut 147 are configured to constrain the position of the box filler 32 from both front and rear ends.
In use, the tubular body 42 and the adjustment nut 147 can serve as front and rear stop points for the body packing 32 to fix the position of the body packing 32, and the adjustment nut 147 can be of hollow construction with a passageway for the plunger assembly 11 to pass through.
With continued reference to fig. 4-8, the conical positioning sleeve 4 includes a first channel 43, a second channel 44 and a third channel 45 sequentially disposed from front to back, a liquid inlet raft 431 is disposed in the first channel, a liquid inlet spring 441 is disposed in the second channel 44, and the front end of the plunger assembly 11 is reciprocally disposed in the first channel 43 and the second channel 44.
In use, by the reciprocating movement of the plunger assembly 11 in the first channel 43 and the second channel 44, the liquid inlet raft 431 can be driven to perform valve opening or closing actions in cooperation with the expansion and contraction of the liquid inlet spring 441, so that gas or liquid enters the pump body 2.
With continued reference to fig. 4, the pump body 2 further includes a valve hole 23 disposed at the front end of the interior, a combination valve 24 disposed in the valve hole 23, and a valve pressing sleeve 25 disposed at the front end of the combination valve 24, wherein the combination valve 24 and the valve pressing sleeve 25 are used for controlling the liquid outlet in cooperation with the liquid inlet raft 431, and a front flange 5 is disposed on the front end surface of the pump body 2.
In the process of the reciprocating motion of the plunger assembly 11, the liquid inlet raft 431 is also in a repeated opening and closing state, when the liquid inlet raft 431 is opened, gas or liquid can enter the pump body 2 from the flow channel in the combination valve 24, and when the liquid inlet raft 431 is closed, the flow channel in the combination valve 24 is closed, and the gas or liquid cannot enter.
With continued reference to fig. 1, 3 and 9, the machine body 1 further includes a power end crankshaft 15, a connecting rod 16 disposed on the power end crankshaft 15, and a piston structure 17 cooperating with the connecting rod 16, and the plunger assembly 11 is connected with the piston structure 17.
When the engine is used, the power end crankshaft 15 is used for being externally connected with a power source and driven by the power source to rotate, the connecting rod 16 is driven by the power end crankshaft 15 to convert the rotation motion of the power end crankshaft 15 into the reciprocating motion of the piston structure 17, and the plunger assembly 11 is driven by the piston structure 17 to realize the reciprocating motion, so that gas or liquid is pumped.
With continued reference to fig. 1 and 9, in some embodiments, the plunger assembly 11 is implemented as multiple sets and is connected to different positions of the power end crankshaft 15 by multiple sets of connecting rods 16 and piston structures 17 so that the plunger assembly 11 performs work at various stages of rotation of the power end crankshaft 15, resulting in a higher pumping efficiency of the present invention.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.