Valve for large PE pipe

Abstract

The utility model provides a large PE pipe valve which comprises a lower valve body, an upper valve body tightly attached to the top of the lower valve body, a bolt screwed between the lower valve body and the upper valve body, an outer cylinder fixed in the middle of the right side between the lower valve body and the upper valve body, a lead screw embedded in the outer cylinder, a pin embedded in the leftmost side of the lead screw, and a hook shaft nested on the outer side of the pin. A copper nut and a thrust ball bearing are embedded into the right side of the interior of the outer cylinder, cranks are embedded into the front end and the rear end of the right side of the copper nut, a locking nut is embedded into the rightmost side of the copper nut, a plug screw is embedded into the left side of the upper portion of the upper valve body, and a balance rod is embedded into the left side of the lower portion of the lower valve body. The utility model is suitable for construction of large 355 and 400 PE pipelines, the flashboard adopts a thin plate structure, the whole weight is lighter, the screw rod adopts a rising stem trapezoidal thread structure, the rotation is smoother, and the normal construction of the PE pipelines is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve equipment technical field especially relates to a valve for large -scale PE pipe. BACKGROUND

[0002] PE, the English abbreviation of polyethylene, PE pipe is a kind of high crystallinity, non-polar thermoplastic resin. The appearance of original HDPE is milky white, in the thin section is translucent to a certain extent, PE has excellent resistance to most of the characteristics of life and industrial chemicals, PE pipe has reliable connection, aging resistance, convenient to carry the specific in our country gas pipeline construction is often used, PE pipe application is relatively wide, various diameter PE pipes emerge in endlessly, and develop towards large pipe diameter direction, and valve is the control component in fluid conveying system, with the functions of stop, regulation, flow guide, prevent backflow, pressure stabilization, shunt or overflow pressure relief, etc., however, the existing valve is applied in larger PE pipe, the valve is heavy as a whole and not smooth enough to open and close, leading to pipeline construction is more inconvenient. SUMMARY

[0003] The utility model aims at solving the problems in the above background art, and provides a valve for large -scale PE pipe.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme:

[0005] A valve for large -scale PE pipe, including lower valve body, the top of lower valve body is closely attached with upper valve body, the bolt is screwed into between lower valve body and upper valve body, the right side middle part between lower valve body and upper valve body is fixed with outer cylinder, the inside of outer cylinder is embedded with lead screw, the leftmost side of lead screw is embedded with pin, the outside of pin is nested with hook shaft, the left side of hook shaft is fixed with gate, the inside right side of outer cylinder is embedded with copper nut and thrust ball bearing, the front and rear ends of copper nut right side are embedded with ratchet wrench, the rightmost side of copper nut is nested with locking nut, the upper left side of upper valve body is embedded with screw plug, the lower left side of lower valve body is embedded with balance bar.

[0006] Preferably, the front and rear ends of the outer circle of the copper nut are milled with key grooves, and the two ratchet wrenches are embedded in the key grooves of the copper nut.

[0007] Preferably, the two thrust ball bearings are nested on the outer right side of the lead screw, and the nut is embedded on the rightmost side of the inner cylinder.

[0008] Preferably, the copper nut has threads, and the inner wall of the copper nut is connected with the outer wall of the lead screw through threads.

[0009] Preferably, the left side of the lower valve body and the upper valve body is respectively provided with a balance hole and a diffusion hole, and the balance rod and the plug are respectively embedded in the balance hole and the diffusion hole.

[0010] The utility model is suitable for large -scale 355, 400PE pipeline construction, the shutter adopts the thin plate structure, the overall weight is lighter, and the screw rod adopts the clear pole trapezoidal thread structure, rotates more smoothly, is more convenient for the normal construction of PE pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the overall structure front view schematic drawing in the utility model;

[0012] Figure 2 It is the overall structure overhead schematic drawing in the utility model;

[0013] Figure 3 It is the plug and balance rod local structure front view schematic drawing in the utility model;

[0014] Figure 4 It is the screw rod local structure schematic drawing in the utility model;

[0015] Figure 5 It is the utility model Figure 1 A structure enlarged schematic drawing in the utility model.

[0016] Legend:

[0017] Lower valve body 1, upper valve body 101, bolt 2, outer tube 3, screw rod 301, pin 302, hook shaft 303, shutter 304, copper nut 4, thrust ball bearing 401, nut 402, crank 5, locking nut 6, plug 7, balance rod 8. DETAILED DESCRIPTION

[0018] Example 1, refer to Figures 1-5 A large -scale PE pipe valve, including lower valve body 1, the top of lower valve body 1 is closely attached to upper valve body 101, and the bolt 2 is screwed into between lower valve body 1 and upper valve body 101, the right middle part between lower valve body 1 and upper valve body 101 is fixed with outer tube 3, the inside of outer tube 3 is embedded with screw rod 301, the leftmost side of screw rod 301 is embedded with pin 302, the outside of pin 302 is nested with hook shaft 303, the left side of hook shaft 303 is fixed with shutter 304, the inside right side of outer tube 3 is embedded with copper nut 4 and thrust ball bearing 401, the front and rear ends of copper nut 4 right side are embedded with crank 5, the rightmost side of copper nut 4 is nested with locking nut 6, the upper left side of upper valve body 101 is embedded with plug 7, and the lower left side of lower valve body 1 is embedded with balance rod 8.

[0019] The front and rear ends of the outer circle of copper nut 4 are milled with key grooves, and the two cranks 5 are embedded in the key grooves of copper nut 4 exactly;

[0020] Two thrust ball bearings 401 are nested on the outer right side of the screw rod 301, and the nut 402 is embedded in the inner rightmost side of the outer cylinder 3;

[0021] The thrust ball bearings 401 play a role of supporting the screw rod 301, so that the screw rod 301 rotates more smoothly in the outer cylinder 3;

[0022] The copper nut 4 has threads, and the inner wall of the copper nut 4 is connected with the outer wall of the screw rod 301 through the threads;

[0023] When the crank 5 drives the copper nut 4 to rotate on the outer side of the screw rod 301, the screw rod 301 moves left or right in the outer cylinder 3, so that the shutter 304 at one end rotates outside the pin 302 at the leftmost side of the screw rod 301 through the hook shaft 303, realizing the opening and closing of the entire valve.

[0024] Embodiment 2, which is different from Embodiment 1, is that in this embodiment, the left side of the lower valve body 1 and the upper valve body 101 are respectively provided with balance holes and diffusion holes, and the balance rod 8 and the plug 7 are respectively embedded in the balance holes and the diffusion holes;

[0025] When the balance rod 8 is pulled out to open the balance hole on the left side of the lower valve body 1, it can play a role of medium pressure balance in construction work.

[0026] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which should also be considered as the protection range of the present application, and these will not affect the effect and practicality of the present application.

Claims

1. A valve for large PE pipes comprising a lower valve body (1), characterized in that, The top of the lower valve body (1) is close to the upper valve body (101), the bolt (2) is screwed into the lower valve body (1) and the upper valve body (101), the outer cylinder (3) is fixed between the right middle part of the lower valve body (1) and the upper valve body (101), the inside of the outer cylinder (3) is embedded with the lead screw (301), the leftmost side of the lead screw (301) is embedded with the pin (302), the outside of the pin (302) is nested with the hook shaft (303), the left side of the hook shaft (303) is fixed with the gate (304), the inside of the right side of the outer cylinder (3) is embedded with the copper nut (4) and the thrust ball bearing (401), the front and rear ends of the right side of the copper nut (4) are embedded with the ratchet wrench (5), the rightmost side of the copper nut (4) is nested with the locking nut (6), the upper left side of the upper valve body (101) is embedded with the screw plug (7), and the lower left side of the lower valve body (1) is embedded with the balance bar (8).

2. The valve for large PE pipes according to claim 1, characterized in that The front and rear ends of the outer circle of the copper nut (4) are milled with key grooves, and the two ratchet wrenches (5) are embedded in the key grooves of the copper nut (4).

3. The valve for large PE pipes according to claim 1, characterized in that The two thrust ball bearings (401) are nested on the outside right side of the lead screw (301), and the nut (402) is embedded on the rightmost side of the inside of the outer cylinder (3).

4. The valve for large PE pipes according to claim 1, characterized in that The copper nut (4) has threads, and the inner wall of the copper nut (4) is connected with the outer wall of the lead screw (301) through threads.

5. The valve for large PE pipes according to claim 1, characterized in that, The left side of the lower valve body (1) and the upper valve body (101) is respectively provided with balance hole and diffusion hole, and the balance bar (8) and the screw plug (7) are respectively embedded in the balance hole and the diffusion hole.

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