CN212899754U

CN212899754U - Pneumatic pipeline stop valve that leakproofness is good

Info

Publication number: CN212899754U
Application number: CN202021294963.4U
Authority: CN
Inventors: 王永丰
Original assignee: Yangzhong Yongsheng Instrument Electric Appliance Co ltd
Current assignee: Yangzhong Yongsheng Instrument Electric Appliance Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-04-06
Anticipated expiration: 2030-07-03

Abstract

The utility model belongs to the technical field of valve body equipment, especially, be a pneumatic pipeline stop valve that leakproofness is good, including stop valve main part and go-between, the upper end of go-between is provided with the valve gap, the upper end fixedly connected with hollow tube of valve gap, the upper end fixedly connected with nut of hollow tube, the inner wall threaded connection of nut has the threaded rod, the lower extreme fixedly connected with dead lever of threaded rod, the upper end fixedly connected with of threaded rod turns round the dish, the lower extreme fixedly connected with case of dead lever, the both sides of case are rotated through the pivot and are connected with the rotary rod. The utility model discloses a sealing rubber ring, sealed ring sum annular seal groove of inserting for the stop valve main part has more the leakproofness with being connected of valve gap, and the piston board is more inseparable with being connected of fixed plate under the condition that the stop valve is closing in addition, has avoided gas leakage phenomenon, thereby has improved the whole result of use of equipment.

Description

Pneumatic pipeline stop valve that leakproofness is good

Technical Field

The utility model relates to a valve body equipment technical field specifically is a pneumatic pipeline stop valve that leakproofness is good.

Background

The stop valve is a valve which is most widely used, and has the advantages of small friction force between sealing surfaces in the opening and closing process, durability, small opening height, easiness in manufacturing, convenience in maintenance, suitability for middle and low pressure environments and high pressure environments.

However, the existing pneumatic pipeline stop valve has the following problems:

1. the existing pneumatic pipeline stop valve is often caused by that gas overflows from a cover top due to insufficient sealing degree between a stop valve main body and a valve cover, so that the gas leaks to cause resource waste, and the existing pneumatic pipeline stop valve is also integrally stopped, so that the gas is likely to leak under the condition of poor sealing property;

2. the existing pneumatic pipeline stop valve has the disadvantages that the connection between the stop valve main body and the valve cover is too complex, and the quick disassembly and assembly in the later period are inconvenient, so that the integral maintenance or replacement becomes more difficult.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a pneumatic pipeline stop valve that leakproofness is good has solved the relatively poor and too complicated problem of being connected of stop valve main part and valve gap of the leakproofness of current pneumatic pipeline stop valve integral connection department and stagnant flow department.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a pneumatic pipeline stop valve with good sealing performance comprises a stop valve main body and a connecting ring, wherein a valve cover is arranged at the upper end of the connecting ring, a hollow pipe is fixedly connected at the upper end of the valve cover, a nut is fixedly connected at the upper end of the hollow pipe, a threaded rod is in threaded connection with the inner wall of the nut, a fixed rod is fixedly connected at the lower end of the threaded rod, a twisting disc is fixedly connected at the upper end of the threaded rod, a valve core is fixedly connected at the lower end of the fixed rod, rotary rods are rotatably connected at two sides of the valve core through a rotary shaft and are rotatably connected with a connecting block through the rotary shaft, a piston plate is connected with the inner wall of the stop valve main body in a piston mode, air holes are formed in the surface of the piston plate, a trapezoidal plug block and a sealing insert ring are respectively, the valve comprises a valve cover and is characterized in that a placement groove is formed in the valve cover, a transverse fixing rod is fixedly connected to the interior of the placement groove, an L-shaped rod is connected to the outer surface of the transverse fixing rod in a sliding mode, and a spring is sleeved on the outer surface of the transverse fixing rod.

As a preferred technical scheme of the utility model, concave groove has been seted up to the upper end surface of go-between, spacing slot has been seted up to the inside wall in concave groove, the lower extreme fixedly connected with sealing rubber ring of valve gap.

As an optimal technical scheme of the utility model, the one end of spring and the inside wall fixed connection of resettlement groove, the other end of spring and one side fixed surface of L type pole are connected.

As a preferred technical scheme of the utility model, sealed insert the ring and insert the inner wall of establishing at the annular seal groove, and the annular seal groove set up the mutual adaptation of design size of size and sealed insert the ring.

As a preferred technical scheme of the utility model, the design size of trapezoidal chock and the mutual adaptation of the size of seting up of trapezoidal through-hole, and the inner wall conflict of trapezoidal chock and trapezoidal through-hole is connected.

As an optimal technical scheme of the utility model, a side surface of connecting block and a side fixed surface of piston board are connected, the valve gap passes through the inner wall sealing connection of sealing rubber ring and stop valve main part.

(III) advantageous effects

Compared with the prior art, the utility model provides a pneumatic pipeline stop valve that leakproofness is good possesses following beneficial effect:

1. this pneumatic pipeline stop valve that leakproofness is good through sealing rubber ring, sealed ring and annular seal groove of inserting for the stop valve main part has more the leakproofness with being connected of valve gap, and the piston board is more inseparable with being connected of fixed plate under the circumstances that the stop valve is closing in addition, has avoided gas leakage phenomenon, thereby has improved the whole result of use of equipment.

2. This pneumatic pipeline stop valve that leakproofness is good through L type pole, concave groove and spacing slot for the stop valve main part can be torn open fast with the valve gap and organize, thereby has made things convenient for the maintenance and the change in later stage, has improved the availability factor of equipment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial connection structure of the stop valve main body and the fixing plate of the present invention;

fig. 3 is an enlarged view of a structure at a in fig. 1 according to the present invention.

In the figure: 1. a shut-off valve body; 2. a connecting ring; 3. a valve cover; 4. a hollow tube; 5. a nut; 6. a threaded rod; 7. fixing the rod; 8. twisting the disc; 9. a valve core; 10. rotating the rod; 11. connecting blocks; 12. a piston plate; 13. a vent hole; 14. a trapezoidal chock block; 15. sealing and inserting the ring; 16. a fixing plate; 17. a trapezoidal through hole; 18. an annular seal groove; 19. a placing groove; 20. transversely fixing the rod; 21. an L-shaped rod; 22. a spring; 23. a concave groove; 24. limiting slots; 25. and sealing the rubber ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a pneumatic pipeline stop valve with good sealing performance comprises a stop valve main body 1 and a connecting ring 2, wherein the upper end of the connecting ring 2 is provided with a valve cover 3, the upper end of the valve cover 3 is fixedly connected with a hollow tube 4, the upper end of the hollow tube 4 is fixedly connected with a nut 5, the inner wall of the nut 5 is in threaded connection with a threaded rod 6, the lower end of the threaded rod 6 is fixedly connected with a fixed rod 7, the upper end of the threaded rod 6 is fixedly connected with a twisting disc 8, the lower end of the fixed rod 7 is fixedly connected with a valve core 9, the two sides of the valve core 9 are rotatably connected with rotary rods 10 through rotary shafts, the rotary rods 10 are rotatably connected with connecting blocks 11 through rotary shafts, the inner wall of the stop valve main body 1 is in piston connection with a piston plate 12, the surface of the piston plate, the surface of the fixed plate 16 is respectively provided with a trapezoidal through hole 17 and an annular sealing groove 18, the inside of the valve cover 3 is provided with a placing groove 19, the inside of the placing groove 19 is fixedly connected with a transverse fixing rod 20, the outer surface of the transverse fixing rod 20 is slidably connected with an L-shaped rod 21, and the outer surface of the transverse fixing rod 20 is sleeved with a spring 22.

In this embodiment, the twisting disc 8 is twisted to make the threaded rod 6 insert a spiral on the inner wall of the nut 5, thereby driving the fixing rod 7 to move up and down, making the valve core 9 pull or push the rotating rod 10 to rotate, and further making the connecting block 11 pull or push the piston plate 12 to generate piston motion on the inner wall of the stop valve body 1, when the trapezoidal plug 14 is inserted into the inner wall of the trapezoidal through hole 17, the gas cannot pass through the vent hole 13, so as to achieve the stop purpose, during this period, the sealing insert ring 15 will be inserted into the inner wall of the annular sealing groove 18, so that the piston plate 12 and the fixing plate 16 are bonded together more tightly, thereby avoiding the leakage after the stop, and also being the connection between the stop valve body 1 and the valve cover 3, the sealing rubber ring 25 at the lower end of the valve cover 3 is firstly inserted into the inner wall of the stop valve body 1, so as to achieve a better sealing effect, before this, the L-shaped rod 21 is moved under the cooperation of the transverse rod 20 and the spring 22, and after the valve cover 3 is completely attached to the connecting ring 2, the L-shaped rod 21 is released.

Specifically, the upper end surface of the connecting ring 2 is provided with a concave groove 23, the inner side wall of the concave groove 23 is provided with a limiting slot 24, and the lower end of the valve cover 3 is fixedly connected with a sealing rubber ring 25.

In this embodiment, the L-shaped rod 21 is automatically reset under the rebounding force of the spring 22, so that the end of the L-shaped rod 21 is inserted into the inner wall of the limiting slot 24, the purpose of rapidly installing the valve cover 3 and the connection ring 2 is achieved, and the later rapid disassembly and assembly are facilitated.

Specifically, one end of the spring 22 is fixedly connected with the inner side wall of the placing groove 19, and the other end of the spring 22 is fixedly connected with one side surface of the L-shaped rod 21.

In this embodiment, two ends of the spring 22 are respectively and fixedly connected with the inner side wall of the placing groove 19 and one side surface of the L-shaped rod 21, so that the corresponding buffering capacity is provided while the connectivity is achieved.

Specifically, the seal insert ring 15 is inserted into the inner wall of the annular seal groove 18, and the opening size of the annular seal groove 18 is matched with the design size of the seal insert ring 15.

In this embodiment, the opening size of the annular sealing groove 18 is matched with the design size of the sealing insert ring 15, so that the sealing insert ring 15 can be more stable after being inserted into the inner wall of the annular sealing groove 18.

Specifically, the design size of trapezoidal chock 14 and the size of seting up of trapezoidal through-hole 17 are mutual adaptation, and trapezoidal chock 14 is contradicted with the inner wall of trapezoidal through-hole 17 and is connected.

In this embodiment, the design size of trapezoidal chock 14 and the size of seting up of trapezoidal through-hole 17 are mutual adaptation to let trapezoidal chock 14 insert and establish behind the inner wall of trapezoidal through-hole 17, can play better sealed effect.

Specifically, one side surface of the connecting block 11 is fixedly connected with one side surface of the piston plate 12, and the valve cover 3 is connected with the inner wall of the stop valve body 1 in a sealing manner through a sealing rubber ring 25.

In this embodiment, valve gap 3 passes through sealing rubber ring 25 and the inner wall sealing connection of stop valve main part 1 to increased the connection leakproofness of valve gap 3 with stop valve main part 1, ensured the normal use of equipment.

The utility model discloses a theory of operation and use flow: when the pneumatic pipeline stop valve with good sealing performance is used, the working principle is as follows: the twisting disc 8 is twisted to enable the threaded rod 6 to be inserted into the inner wall of the nut 5 to be screwed, so as to drive the fixed rod 7 to move up and down, and enable the valve core 9 to pull or push the rotary rod 10 to rotate, and further enable the connecting block 11 to pull or push the piston plate 12 to generate piston motion on the inner wall of the stop valve main body 1, after the trapezoidal plug block 14 is inserted into the inner wall of the trapezoidal through hole 17, gas cannot pass through the vent hole 13, so as to achieve the purpose of stopping, during the period, the sealing insert ring 15 is inserted into the inner wall of the annular sealing groove 18, the piston plate 12 is tightly attached to the fixed plate 16, leakage after stopping is avoided, and the stop valve main body 1 is also connected with the valve cover 3, the sealing rubber ring 25 at the lower end of the valve cover 3 is firstly inserted into the inner wall of the stop valve main body 1 to achieve a better sealing effect, before the L-shaped rod 21 is pulled, so as to enable the L-shaped rod 21, when the valve cap 3 is completely attached to the connecting ring 2, the L-shaped rod 21 is loosened, the L-shaped rod 21 can automatically reset under the rebounding action force of the spring 22, so that the tail end of the L-shaped rod 21 is inserted into the inner wall of the limiting slot 24, the purpose of quickly installing the valve cap 3 and the connecting ring 2 is achieved, and the valve cap 3 and the connecting ring 2 can be conveniently quickly disassembled and assembled in the later period.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pneumatic line stop valve that leakproofness is good, includes stop valve main part (1) and go-between (2), its characterized in that: the upper end of the connecting ring (2) is provided with a valve cover (3), the upper end of the valve cover (3) is fixedly connected with a hollow pipe (4), the upper end of the hollow pipe (4) is fixedly connected with a nut (5), the inner wall thread of the nut (5) is connected with a threaded rod (6), the lower end of the threaded rod (6) is fixedly connected with a fixed rod (7), the upper end of the threaded rod (6) is fixedly connected with a twisting disc (8), the lower end of the fixed rod (7) is fixedly connected with a valve core (9), the two sides of the valve core (9) are rotatably connected with a rotary rod (10) through a rotary shaft, the rotary rod (10) is rotatably connected with a connecting block (11) through a rotary shaft, the inner wall piston of the stop valve main body (1) is connected with a piston plate (12), the surface of the piston plate (12) is provided with an air vent (13), the inner wall fixedly connected with fixed plate (16) of stop valve main part (1), trapezoidal through-hole (17) and annular seal groove (18) have been seted up respectively to the surface of fixed plate (16), settling tank (19) have been seted up to the inside of valve gap (3), the inside fixedly connected with horizontal solid pole (20) of settling tank (19), the surface sliding connection of horizontal solid pole (20) has L type pole (21), the surface cover of horizontal solid pole (20) is equipped with spring (22).

2. The pneumatic pipeline stop valve with good sealing performance as claimed in claim 1, wherein: the upper end surface of go-between (2) has seted up concave groove (23), spacing slot (24) have been seted up to the inside wall in concave groove (23), the lower extreme fixedly connected with sealing rubber ring (25) of valve gap (3).

3. The pneumatic pipeline stop valve with good sealing performance as claimed in claim 1, wherein: one end of the spring (22) is fixedly connected with the inner side wall of the placing groove (19), and the other end of the spring (22) is fixedly connected with the surface of one side of the L-shaped rod (21).

4. The pneumatic pipeline stop valve with good sealing performance as claimed in claim 1, wherein: the sealing insert ring (15) is inserted into the inner wall of the annular sealing groove (18), and the opening size of the annular sealing groove (18) is matched with the design size of the sealing insert ring (15).

5. The pneumatic pipeline stop valve with good sealing performance as claimed in claim 1, wherein: the design size of trapezoidal chock (14) and the size of seting up of trapezoidal through-hole (17) are mutual adaptation, and trapezoidal chock (14) is contradicted with the inner wall of trapezoidal through-hole (17) and is connected.

6. The pneumatic pipeline stop valve with good sealing performance as claimed in claim 1, wherein: one side surface of connecting block (11) and one side fixed surface of piston board (12) are connected, valve gap (3) are through sealed rubber ring (25) and the inner wall sealing connection of stop valve main part (1).