CN217272308U

CN217272308U - Valve shaft seal structure for petroleum pipeline

Info

Publication number: CN217272308U
Application number: CN202220470888.5U
Authority: CN
Inventors: 徐峰
Original assignee: Suzhou Xiangcheng Tongli Machinery Co ltd
Current assignee: Suzhou Xiangcheng Tongli Machinery Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-08-23
Anticipated expiration: 2032-03-04

Abstract

The utility model is suitable for a petroleum pipeline valve technical field provides a valve shaft seal structure for petroleum pipeline, including valve body, valve shaft, spacing seat, joint board, fixed plate, spring and limiting plate, set up the via hole one that supplies the valve shaft to pass on the valve, and be provided with sealing washer one on the inner wall of via hole one, prevent that outside liquid from having valve shaft department to get into in the pipeline, pollute the oil; the limiting seat is mounted on the inner wall of the valve body, an annular groove is formed in the limiting seat, a bayonet communicated with the annular groove is formed in the limiting seat, a clamping plate matched with the bayonet is fixedly mounted on the valve shaft, two matching grooves are formed in the inner wall of the bayonet, a clamping block matched with the matching grooves is mounted on the outer wall of the clamping plate, the valve shaft is rotated after the clamping block passes through the matching grooves, and the clamping block is clamped with the top wall of the annular groove to fix the valve shaft; and set up on the diapire of spacing seat with valve shaft matched with via hole two, the valve shaft of being convenient for passes, be provided with sealed pad two on the via hole two simultaneously, improve the leakproofness.

Description

Valve shaft seal structure for petroleum pipeline

Technical Field

The utility model belongs to the technical field of the petroleum pipeline valve, especially, relate to a valve shaft seal structure for petroleum pipeline.

Background

In the current art of petroleum pipeline valves, valves are control elements in fluid piping systems that primarily function to isolate equipment and piping systems, regulate flow, prevent backflow, regulate and vent pressure. Can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metal, radioactive media and the like. Since it is important to select the most suitable valve for the piping system, it is also important to know the characteristics of the valve and the steps and basis for selecting the valve.

The valve for the pipeline is used because oil has permeability, the valve needs to have good sealing performance to prevent oil from leaking, the shaft seal structure of the valve for the petroleum pipeline is single, and the valve is inconvenient to use when being opened and closed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a valve shaft seal structure for petroleum pipeline aims at solving the bearing seal structure in the above-mentioned background comparatively single, uses comparatively inconvenient problem during the switch valve.

The utility model discloses a realize like this, a valve shaft seal structure for petroleum pipeline, including valve body, valve shaft, spacing seat, joint board, fixed plate, spring and limiting plate.

The limiting seat is embedded on the inner wall of the valve body, and an annular groove is formed in the limiting seat.

The upper surface of the limiting seat is provided with a bayonet communicated with the annular groove, and the bottom wall of the limiting seat is provided with a second through hole connected with the annular groove.

And a second sealing ring is embedded on the inner wall of the second via hole.

The valve shaft penetrates through the bayonet and the second through hole in sequence.

Two matching grooves are formed in the inner wall of the bayonet, and the two matching grooves are symmetrically formed in the bayonet.

The clamping plate is fixedly mounted on the outer wall of the valve shaft, and two clamping blocks matched with the matching grooves are mounted on the outer wall of the clamping plate.

And the clamping and connecting plate is arranged above the limiting seat.

Preferably, two limiting blocks are arranged on the inner wall of the annular groove.

And the two limiting blocks are symmetrically arranged.

Preferably, the upper surface of the valve body is provided with a first through hole through which the valve shaft passes.

And a first sealing ring is embedded on the inner wall of the first via hole.

Preferably, the outer wall of the valve shaft is fixedly provided with the fixing plate, and the fixing plate is arranged below the limiting seat.

Preferably, the inner wall of the valve body is provided with the limiting plate, and the limiting plate is provided with a third through hole for the valve shaft to pass through.

And a third sealing ring is embedded on the inner wall of the third via hole.

Preferably, the spring is sleeved on the outer wall of the valve shaft.

One end of the spring abuts against the lower surface of the fixing plate, and the other end of the spring abuts against the upper surface of the limiting plate.

And the outer surface of the spring is provided with a corrosion-resistant coating.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a valve shaft seal structure for petroleum pipeline, set up the via hole one that supplies the valve shaft to pass on the valve, and be provided with the sealing washer one on the inner wall of via hole one, prevent that outside liquid from having valve shaft department to get into in the pipeline, pollute the oil; the limiting seat is mounted on the inner wall of the valve body, an annular groove is formed in the limiting seat, a bayonet communicated with the annular groove is formed in the limiting seat, a clamping plate matched with the bayonet is fixedly mounted on the valve shaft, two matching grooves are formed in the inner wall of the bayonet, a clamping block matched with the matching grooves is mounted on the outer wall of the clamping plate, the valve shaft is rotated after the clamping block passes through the matching grooves, and the clamping block is clamped with the top wall of the annular groove to fix the valve shaft; a second through hole matched with the valve shaft is formed in the bottom wall of the limiting seat, so that the valve shaft can conveniently penetrate through the second through hole, and meanwhile, a second sealing gasket is arranged on the second through hole, so that the sealing property is improved; the valve shaft is provided with a fixing plate, the inner wall of the valve body is provided with a limiting plate, the valve shaft is sleeved with a spring, one end of the spring abuts against the fixing plate, the other end of the spring abuts against the limiting plate, the spring can drive the valve shaft to rebound, and the valve is closed more labor-saving; and the structure is convenient to use, the operation is simple, the sealing performance of the valve shaft can be improved, and the valve shaft is more worthy of popularization and application.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic structural view of the ring groove of the present invention;

FIG. 3 is a schematic structural view of the fitting groove of the present invention;

FIG. 4 is a schematic structural view of the clamping plate of the present invention;

in the figure: 1. a valve body; 101. a first via hole; 102. a first sealing ring; 2. a valve shaft; 3. a limiting seat; 301. an annular groove; 302. a bayonet; 303. a mating groove; 304. a limiting block; 305. a second via hole; 306. a second sealing ring; 4. a clamping and connecting plate; 401. a clamping block; 5. a fixing plate; 6. a spring; 7. a limiting plate; 701. a third via hole; 703. and a third sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a petroleum pipeline is with valve shaft seal structure, including valve body 1, the valve shaft 2, spacing seat 3, joint plate 4, fixed plate 5, spring 6 and limiting plate 7, spacing seat 3 inlays the dress on the inner wall of valve body 1, ring channel 301 has been seted up to the inside of spacing seat 3, the bayonet socket 302 of intercommunication ring channel 301 is seted up to the upper surface of spacing seat 3, via hole two 305 of go-between ring channel 301 is seted up to the diapire of spacing seat 3, it is equipped with sealing washer two 306 to inlay on the inner wall of via hole two 305, bayonet socket 302 and via hole two 305 are run through in proper order to valve shaft 2, two cooperation grooves 303 have been seted up on the inner wall of bayonet socket 302, and the setting of two cooperation groove 303 symmetries is on bayonet socket 302, fixed mounting has joint plate 4 on the outer wall of valve shaft 2, install two cooperation groove 303 matched with fixture block 401 on joint plate 4's the outer wall, and joint plate 4 sets up the top at spacing seat 3.

When the valve is opened by the valve shaft 2, the valve shaft 2 is pressed to move downwards, the valve shaft 2 is rotated simultaneously, the valve shaft 2 drives the clamping plate 4 to rotate, the clamping block 401 directly faces the matching groove 303 and then enters the annular groove 301 through the clamping opening 302, and meanwhile, the clamping plate 4 rotates, so that the clamping block 401 is not directly facing the matching groove 303 any more and is abutted against the top wall of the annular groove 301, the valve shaft 2 is prevented from rebounding, the valve is in an opened state, the sealing performance of the limiting seat 3 is improved by the sealing ring two 306, and the situations of leakage and the like are avoided.

Two limiting blocks 304 are arranged on the inner wall of the annular groove 301, and the two limiting blocks 304 are symmetrically arranged.

Wherein, stopper 304 can contradict fixture block 401, and then restricts the position of stopper 304, prevents that the angle of rotating valve shaft 2 is too big, can't find the position of cooperation groove 303, improves the availability factor of valve shaft 2.

The upper surface of the valve body 1 is provided with a first through hole 101 through which the valve shaft 2 passes, and the inner wall of the first through hole 101 is embedded with a first sealing ring 102.

In addition, the first through hole 101 through which the valve shaft 2 penetrates is convenient to install and use the valve shaft 2, and meanwhile, the first sealing ring 102 improves the sealing performance of the first through hole 101 and prevents external liquid from entering a pipeline to pollute petroleum.

A limiting plate 7 is installed on the inner wall of the valve body 1, a third through hole 701 through which the valve shaft 2 passes is formed in the limiting plate 7, and a third sealing ring 703 is embedded in the inner wall of the third through hole 701.

In addition, the position of the spring 6 is limited by the limit plate 7, the valve shaft 2 passes through the third through hole 701, and the third sealing ring 703 further improves the sealing performance of the valve shaft 2.

Fixed mounting has fixed plate 5 on the outer wall of valve shaft 2, and fixed plate 5 sets up on the outer wall of valve shaft 2 at the below spring 6 suit of spacing seat 3, and the lower surface of fixed plate 5 is contradicted to the one end of spring 6, and the upper surface of limiting plate 7 is contradicted to the other end, and the surface of spring 6 is provided with corrosion-resistant coating.

Further, the one end of spring 6 contradicts the lower surface of fixed plate 5, and the other end contradicts the upper surface of limiting plate 7, and when valve shaft 2 descends, drive fixed plate 5 and descend, through fixed plate 5 and limiting plate 7 compression spring 6, when valve shaft 2 ascended, spring 6 rebounded through self elasticity, contradicted fixed plate 5, and then drove that valve shaft 2 ascended, and it is more convenient to use.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when the valve shaft 2 opens the valve, the valve shaft 2 is pressed to move downwards, and the valve shaft 2 is rotated at the same time, at the moment, the valve shaft 2 drives the clamping plate 4 to rotate, after the clamping block 401 is over against the matching groove 303, the clamping block enters the annular groove 301 from the bayonet 302, meanwhile, the clamping plate 4 rotates, so that the clamping block 401 is not directly opposite to the matching groove 303 any more and abuts against the top wall of the annular groove 301, one end of the spring 6 abuts against the lower surface of the fixing plate 5, the other end abuts against the upper surface of the limiting plate 7, when the valve shaft 2 descends, the fixing plate 5 is driven to descend, the spring 6 is compressed by the fixing plate 5 and the limiting plate 7, so that the valve shaft 2 is prevented from rebounding, the valve is in an open state, when the valve is closed, the valve shaft 2 is rotated to enable the clamping block 401 to be over against the matching groove 303, the spring 6 rebounds through self elasticity and abuts against the fixing plate 5, and then the valve shaft 2 is driven to ascend, so that the valve is convenient to close, and the valve is more convenient to use.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a valve shaft seal structure for petroleum pipeline which characterized in that: the valve comprises a valve body (1), a valve shaft (2), a limiting seat (3), a clamping plate (4), a fixing plate (5), a spring (6) and a limiting plate (7);

the limiting seat (3) is embedded on the inner wall of the valve body (1), and an annular groove (301) is formed in the limiting seat (3);

a bayonet (302) communicated with the annular groove (301) is formed in the upper surface of the limiting seat (3), and a second through hole (305) connected with the annular groove (301) is formed in the bottom wall of the limiting seat (3);

a second sealing ring (306) is embedded on the inner wall of the second through hole (305);

the valve shaft (2) penetrates through the bayonet (302) and the second through hole (305) in sequence;

two matching grooves (303) are formed in the inner wall of the bayonet (302), and the two matching grooves (303) are symmetrically formed in the bayonet (302);

the clamping plate (4) is fixedly installed on the outer wall of the valve shaft (2), and two clamping blocks (401) matched with the matching grooves (303) are installed on the outer wall of the clamping plate (4);

and the clamping plate (4) is arranged above the limiting seat (3).

2. The valve shaft seal structure for the petroleum pipeline as recited in claim 1, wherein: two limiting blocks (304) are mounted on the inner wall of the annular groove (301);

and the two limit blocks (304) are symmetrically arranged.

3. The valve shaft seal structure for the petroleum pipeline as recited in claim 1, wherein: a first through hole (101) for the valve shaft (2) to pass through is formed in the upper surface of the valve body (1);

and a first sealing ring (102) is embedded on the inner wall of the first via hole (101).

4. The valve shaft seal structure for the petroleum pipeline as recited in claim 1, wherein: the outer wall of the valve shaft (2) is fixedly provided with the fixing plate (5), and the fixing plate (5) is arranged below the limiting seat (3).

5. The valve shaft seal structure for the petroleum pipeline as recited in claim 1, wherein: the inner wall of the valve body (1) is provided with the limiting plate (7), and the limiting plate (7) is provided with a third through hole (701) for the valve shaft (2) to pass through;

and a third sealing ring (703) is embedded on the inner wall of the third via hole (701).

6. The valve shaft seal structure for the petroleum pipeline as recited in claim 1, wherein: the spring (6) is sleeved on the outer wall of the valve shaft (2);

one end of the spring (6) abuts against the lower surface of the fixing plate (5), and the other end of the spring abuts against the upper surface of the limiting plate (7);

and the outer surface of the spring (6) is provided with a corrosion-resistant coating.