CN104847953A - Pull-fastened vacuum barrier-free blow-down valve - Google Patents

Abstract

The invention relates to the technical field of blow-down valves, in particular to a pull-fastened vacuum barrier-free blow-down valve comprising a plastic body (8), a pair of end plates (1), a rubber sealed hose (2), a pair of seals (3), a pair of cover plates (4), a pair of springs (5), a first piston (6) and a second piston (7). The plastic body (8) is provided with an air access (111), a pair of outer protrusions and a pair of inner protrusions. The end plates (1) are mounted on the outer protrusions arranged at two ends of the plastic body (8). The two ends of the rubber sealed hose (2) hermetically sleeve the inner protrusions of the plastic body (8), respectively. The cover plates (8) are both mounted on the plastic body (8) and sealed with the seals (3). The pull-fastened vacuum barrier-free blow-down valve is controlled via vacuum air provided by a system, is rarely damaged, is lower in application cost and is rarely jammed.

Description

The without hindrance blowdown valve of a kind of pull fastening type vacuum

Technical field

The present invention relates to blowdown valve technical field, be specifically related to the without hindrance blowdown valve of a kind of pull fastening type vacuum.

Background technique

Blowdown valve is the valve by solenoid valve or compressed air-driven, the major part of existing blowdown valve is all made of metal, price is high and heavier, and hermetic unit is by the crush seal between barrier film and metal valve body, barrier film is easily damaged, cause frequent leakage, change trouble, maintenance cost is high; The passage of diaphragm seal is not lead directly to blow-off line in addition, changes the flow direction of sewage, produces resistance, hinders passing through of blowdown, thus easily the situation of blocking occurs.

Summary of the invention

Object of the present invention is exactly to solve the problems of the technologies described above, and provides a kind of pull fastening type vacuum without hindrance blowdown valve.

The present invention includes plastics valve body, a pair end plate, rubber seal flexible pipe, pair of seal members, a pair cover plate, a pair spring, first piston part and the second piston piece, plastics valve body is provided with air inlet/outlet, a pair outer lug boss and a pair inner convex platform, a pair end plate is arranged in the outer lug boss at the two ends of plastics valve body respectively, the two ends of rubber seal flexible pipe are distinguished on a pair inner convex platform of stuffing box gland on plastics valve body, a pair cover plate is arranged on plastics valve body respectively, and sealed by pair of seal members, the two ends of first piston part and the second piston piece are against between cover plate and rubber seal flexible pipe outer wall respectively, a pair spring is enclosed within first piston part and the second piston piece respectively.

The both sides of end plate are respectively equipped with mounting hole, and the both sides of plastics valve body are respectively equipped with mounting hole, by bolt, end plate are arranged on the two ends of plastics valve body.

First piston part is provided with chute, and the second piston piece is provided with slide rail, and do not offset when first piston part and the second piston piece pulling buckle, sealing effect is good.

Chute is provided with in plastics valve body.

Cover plate is provided with connection back-off.

The enterprising air outlet of plastics valve body is connected with vacuum generator.

The present invention has the following advantages: the present invention is used for without hindrance formula sewage blow-down valve, provides vacuum source to realize control by system, not fragile, reduces user cost, and the situation of blocking can not occur.

Accompanying drawing explanation

Fig. 1 is pull fastening type vacuum of the present invention without hindrance blowdown valve structural representation when closing.

Fig. 2 is pull fastening type vacuum of the present invention without hindrance blowdown valve structural representation when opening.

Fig. 3 is the perspective view of the without hindrance blowdown valve of pull fastening type vacuum of the present invention.

Fig. 4 is the pulling buckle composite structure schematic diagram of the without hindrance blowdown valve of pull fastening type vacuum of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described.

As Fig. 1, 2, 3, shown in 4, the present invention includes plastics valve body 8, a pair end plate 1, rubber seal flexible pipe 2, pair of seal members 3, a pair cover plate 4, a pair spring 5, first piston part 6 and the second piston piece 7, plastics valve body 8 is provided with air inlet/outlet 111, a pair outer lug boss and a pair inner convex platform, a pair end plate 1 is arranged in the outer lug boss at the two ends of plastics valve body 8 respectively, the two ends of rubber seal flexible pipe 2 are distinguished on a pair inner convex platform of stuffing box gland on plastics valve body 8, a pair cover plate 4 is arranged on plastics valve body 8 respectively, and sealed by pair of seal members 3, the two ends of first piston part 6 and the second piston piece 7 are against between cover plate 4 and rubber seal flexible pipe 2 outer wall respectively, a pair spring 5 is enclosed within first piston part 6 and the second piston piece 7 respectively.

The both sides of end plate 1 are respectively equipped with mounting hole, and the both sides of plastics valve body 8 are respectively equipped with mounting hole, by bolt, end plate 1 are arranged on the two ends of plastics valve body 8.

First piston part 6 is provided with chute, and the second piston piece 7 is provided with slide rail, and do not offset when first piston part and the second piston piece pulling buckle, sealing effect is good.

Chute is provided with in plastics valve body 8.

Cover plate 4 is provided with connection back-off.

On plastics valve body 8, air inlet/outlet 111 is connected with vacuum generator.

The working principle that the present invention is used for the without hindrance blowdown valve of pull fastening type vacuum of the clog-free discharge of sewage is as follows: rubber seal flexible pipe 2 original state is for closing (as shown in Figure 1), and the without hindrance blowdown valve of pull fastening type vacuum that the present invention is used for the clog-free discharge of sewage is in cut-off state; The air inlet/outlet 111 be provided with by plastics valve body 8 is connected vacuum and vacuumizes, control chamber 112 is in vacuum state, cover plate 4 is Compress Spring 5 under atmospheric pressure, control cavity 112 to diminish, cavity 114 becomes large, rubber seal flexible pipe 2 is opened (as shown in Figure 2) completely, working cavity 113 conducting, the without hindrance blowdown valve of pull fastening type vacuum that now the present invention is used for the clog-free discharge of sewage is on state, rubber seal flexible pipe 2 internal work chamber 113 is without hindrance, sewage passes through very smoothly, and situation about blocking can not occur, and is not easy to damage; When air inlet/outlet 111 is connected with air, control chamber 112 communicates with air, resets at spring 5, and control cavity 112 and become large, cavity 114 diminishes, thus clamping rubber seal flexible pipe 2 ends, and cover plate 4 returns to original state (as shown in Figure 1), easy and simple to handle.

Above mode of execution only for illustration of the present invention, and is not limitation of the present invention, and the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all equivalent.Technological scheme also belong to category of the present invention, scope of patent protection of the present invention should be defined by the claims.

Claims (6)

1. the without hindrance blowdown valve of pull fastening type vacuum, it is characterized in that it comprises plastics valve body (8), a pair end plate (1), rubber seal flexible pipe (2), pair of seal members (3), a pair cover plate (4), a pair spring (5), first piston part (6) and the second piston piece (7), plastics valve body (8) is provided with air inlet/outlet (111), a pair outer lug boss and a pair inner convex platform, a pair end plate (1) is arranged in the outer lug boss at the two ends of plastics valve body (8) respectively, the two ends of rubber seal flexible pipe (2) are distinguished on a pair inner convex platform of stuffing box gland on plastics valve body (8), a pair cover plate (4) is arranged on plastics valve body (8) respectively, and by pair of seal members (3) sealing, the two ends of first piston part (6) and the second piston piece (7) are against between cover plate (4) and rubber seal flexible pipe (2) outer wall respectively, a pair spring (5) is enclosed within first piston part (6) and the second piston piece (7) respectively.

2. the without hindrance blowdown valve of a kind of pull fastening type vacuum according to claim 1, it is characterized in that the both sides of end plate (1) are respectively equipped with mounting hole, the both sides of plastics valve body (8) are respectively equipped with mounting hole, by bolt, end plate (1) are arranged on the two ends of plastics valve body (8).

3. the without hindrance blowdown valve of a kind of pull fastening type vacuum according to claim 1, it is characterized in that first piston part (6) is provided with chute, the second piston piece (7) is provided with slide rail, does not offset for when first piston part and the second piston piece pulling buckle.

4. the without hindrance blowdown valve of a kind of pull fastening type vacuum according to claim 1, is characterized in that being provided with chute in plastics valve body (8).

5. the without hindrance blowdown valve of a kind of pull fastening type vacuum according to claim 1, is characterized in that cover plate (4) is provided with connection back-off.

6. the without hindrance blowdown valve of a kind of pull fastening type vacuum according to claim 1, is characterized in that the upper air inlet/outlet (111) of plastics valve body (8) is connected with vacuum generator.