CN216178227U

CN216178227U - Foot valve jump ring assembly quality

Info

Publication number: CN216178227U
Application number: CN202122692091.8U
Authority: CN
Inventors: 李仁涛; 孙传学; 郭利杰
Original assignee: Qingdao Lijun Automation Technology Co ltd
Current assignee: Qingdao Lijun Automation Technology Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-05
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses a foot valve snap spring assembling device which comprises a valve seat, wherein a valve core is inserted into the valve seat, a lower adjusting ring positioned in the valve seat is sleeved at the top of the valve core, a lower support screw is inserted into the left side of the valve seat, an upper adjusting ring is arranged at the top of the lower adjusting ring, an upper support screw positioned at the top of the lower support screw is inserted into the left side of the valve seat, a valve clack is arranged at the top of the upper adjusting ring, a valve clack seat is sleeved on the surface of the valve clack, a guide sleeve is sleeved on the surface of the valve clack seat, the outer surface of the guide sleeve is fixedly connected with the inner wall of the valve seat, and a valve rod is inserted into the valve seat. The utility model realizes overpressure, opening and closing pressure difference and action performance of the safety valve by adopting the double adjusting rings and the back pressure adjusting mechanism, and solves the problems that the opening and closing of the valve cannot meet the requirement of system operation and the potential safety hazard is caused to a steam pipeline only by the adjustment of the safety valve.

Description

Foot valve jump ring assembly quality

Technical Field

The utility model relates to the technical field of automobile machinery, in particular to a foot valve clamp spring assembling device.

Background

The main steam safety valve is mainly used for protecting the pipeline and equipment of the main steam system to safely operate, and when the system pressure rises to the opening pressure of the safety valve, the safety valve is automatically opened to discharge steam in the main steam system, so that the system pressure is reduced. When the system pressure is reduced to the pressure of the safety valve, the safety valve is automatically closed, and the discharge is stopped, so that normal production activities are not influenced, but the opening and closing of the valve are not always required by the operation of the system only by the adjustment of the safety valve, and potential safety hazards to a steam pipeline are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the background art, the utility model aims to provide a foot valve clamp spring assembling device which has the advantage of improving the press-fitting reliability and solves the problems that the opening and closing of a valve cannot meet the requirement of system operation and the potential safety hazard to a steam pipeline is caused only by the adjustment of a safety valve.

In order to achieve the purpose, the utility model provides the following technical scheme: a foot valve clamp spring assembly device comprises a valve seat;

the valve comprises a valve seat, a valve core is inserted in the valve seat, a lower adjusting ring located inside the valve seat is sleeved at the top of the valve core, a lower support screw is inserted in the left side of the valve seat, an upper adjusting ring is arranged at the top of the lower adjusting ring, an upper support screw located at the top of the lower support screw is inserted in the left side of the valve seat, a valve clack is arranged at the top of the upper adjusting ring, a valve clack seat is sleeved on the surface of the valve clack, a guide sleeve is sleeved on the surface of the valve clack seat, the outer surface of the guide sleeve is fixedly connected with the inner wall of the valve seat, a valve rod is inserted in the valve seat, the bottom end of the valve rod sequentially penetrates through the valve seat and the valve clack seat and extends to the inside of the valve clack, a valve cover on the surface of the valve rod is fixedly connected with the top of the valve seat, and a spring arranged on the surface of the valve rod is arranged in the inside of the valve cover.

Preferably, the top of the valve seat is fixedly connected with a back pressure sleeve, the left side of the back pressure sleeve is communicated with a back pressure threaded pipe, the top of the back pressure sleeve is fixedly connected with a back pressure adjusting sleeve, one end, far away from the back pressure sleeve, of the back pressure threaded pipe is sleeved with a back pressure adjusting nut, and the back pressure adjusting sleeve is sleeved on the surface of the valve rod.

Preferably, the top of the back pressure sleeve is fixedly connected with a radiator, and the radiator is positioned between the back pressure sleeve and the valve cover.

Preferably, the surface of the valve rod is fixedly connected with a limiting ring, and the limiting ring is positioned on the front surface of the radiator.

Preferably, the surface of the valve rod is sleeved with a belleville spring, and the belleville spring is located inside the spring.

Preferably, the upper and lower cap screws are respectively matched with the upper and lower adjusting rings through teeth.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model realizes overpressure, opening and closing pressure difference and action performance of the safety valve by adopting the double adjusting rings and the back pressure adjusting mechanism, and solves the problems that the opening and closing of the valve cannot meet the requirement of system operation and the potential safety hazard is caused to a steam pipeline only by the adjustment of the safety valve.

2. The utility model can control the pressure in the back pressure sleeve by adjusting the position of the back pressure adjusting sleeve to adjust the size of the gap or adjusting the back pressure adjusting nut so as to adjust the pressure of the back valve seat.

3. The safety valve is provided with the radiator, so that the heat dissipation in the safety valve can be accelerated, and the spring is prevented from being deformed due to overhigh temperature and influencing the sensitivity of the normal work of the spring.

4. The limiting ring is arranged, so that the valve can be conveniently adjusted in the valve height opening and assembling process, and the phenomenon that the opening height is too large or too small due to machining errors is avoided.

5. The butterfly spring is arranged on the valve rod, so that the valve has a buffering effect when being opened and closed, and the influence on the sealing surface of the valve seat and the valve clack is reduced.

6. The upper adjusting ring and the lower adjusting ring can be conveniently adjusted by arranging the matching teeth, so that the safety of a tester is ensured.

Drawings

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

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 4 is a schematic top view of a portion of the present invention.

In the figure: 1. a valve seat; 2. a valve core; 3. a lower adjustment ring; 4. a lower lag screw; 5. an upper adjusting ring; 6. an upper lag screw; 7. a valve flap; 8. a valve flap seat; 9. a guide sleeve; 10. a valve stem; 11. a valve cover; 12. a spring; 13. back pressing the sleeve; 14. a back pressure threaded pipe; 15. a back pressure adjusting sleeve; 16. a back pressure adjusting nut; 17. a heat sink; 18. a limiting ring; 19. a belleville spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the foot valve circlip assembling device provided by the utility model comprises a valve seat 1;

disk seat 1's inside is pegged graft and is had case 2, the top cover of case 2 is equipped with the lower adjusting ring 3 that is located disk seat 1 inside, disk seat 1's left side is pegged graft and is had lower head screw 4, the top of lower adjusting ring 3 is provided with adjusting ring 5, disk seat 1's left side is pegged graft and is had the upper bracket screw 6 that is located lower head screw 4 top, the top of going up adjusting ring 5 is provided with valve clack 7, valve clack 7's surface cover is equipped with valve clack seat 8, valve clack seat 8's surface cover is equipped with uide bushing 9, the surface of uide bushing 9 and disk seat 1's inner wall fixed connection, disk seat 1's inside is pegged graft and is had valve rod 10, disk seat 1 and valve clack seat 8 are run through in proper order and extend to valve rod 7's inside to the bottom of valve rod 10, disk seat 1's top fixedly connected with cover is established at valve gap 11 on valve rod 10 surfaces, valve gap 11's inside is provided with valve rod cover and is established spring 12 on valve rod 10 surfaces.

Referring to fig. 1, a back pressure sleeve 13 is fixedly connected to the top of the valve seat 1, a back pressure threaded pipe 14 is communicated with the left side of the back pressure sleeve 13, a back pressure adjusting sleeve 15 is fixedly connected to the top of the back pressure sleeve 13, a back pressure adjusting nut 16 is sleeved on one end, away from the back pressure sleeve 13, of the back pressure threaded pipe 14, and the back pressure adjusting sleeve 15 is sleeved on the surface of the valve rod 10.

As a technical optimization of the present invention, the pressure in the back pressure sleeve 13 can be controlled by adjusting the position of the back pressure adjusting sleeve 15 to adjust the size of the gap or adjusting the back pressure adjusting nut 16, so as to adjust the pressure of the back valve seat 1.

Referring to fig. 1, a radiator 17 is fixedly connected to the top of the back pressure sleeve 13, and the radiator 17 is located between the back pressure sleeve 13 and the bonnet 11.

As a technical optimization scheme of the utility model, the heat dissipation in the safety valve can be accelerated by arranging the radiator 17, and the influence on the sensitivity of the normal work of the spring 12 caused by the deformation of the spring 12 due to overhigh temperature can be prevented.

Referring to fig. 1, a limiting ring 18 is fixedly connected to the surface of the valve stem 10, and the limiting ring 18 is located on the front surface of the heat sink 17.

As a technical optimization scheme of the utility model, the limiting ring 18 is arranged, so that the valve can be conveniently adjusted in the process of opening and assembling the valve, and the phenomenon that the opening height is too large or too small caused by machining errors is avoided.

Referring to fig. 3, the surface of the valve stem 10 is sleeved with a belleville spring 19, and the belleville spring 19 is located inside the spring 12.

As a technical optimization scheme of the utility model, the butterfly spring 19 is arranged on the valve rod 10, so that the valve plays a role of buffering when being opened and closed, and the influence on the sealing surfaces of the valve seat 1 and the valve clack 7 is reduced.

Referring to fig. 4, the upper cap screw 6 and the lower cap screw 4 are engaged with the upper adjusting ring 5 and the lower adjusting ring 3 through teeth, respectively.

As a technical optimization scheme of the utility model, the upper adjusting ring 5 and the lower adjusting ring 3 can be conveniently adjusted by arranging the matching teeth, so that the safety of testing personnel is ensured.

The working principle and the using process of the utility model are that when in use, the inlet pressure is lower than the setting pressure, the valve flap 7 is pressed on the valve seat 1 under the action of the spring 12 to be in a closed position, the valve seat 1 is in a closed state, in order to ensure the safety of a protected system, the setting pressure of the valve seat 1 is not more than the design pressure of the protected system, when in normal work, the valve seat 1 is in a sealing state, so the sealing test pressure of the valve seat 1 is equal to or higher than the working pressure when the protected system is in normal operation, when the inlet pressure of the system is equal to the setting pressure of the valve seat 1, the force of the spring 12 is equal to the force of an inlet medium acting on the valve flap 7, the acting force between the valve flap 7 and the valve seat 1 is equal to zero, when the inlet pressure is higher than the setting pressure, the medium flows through the surface of the valve seat 1 to enter a pressure storage cavity, because the pressure in the pressure storage cavity is increased as a result of the throttling action between the valve flap seat 8 and a lower regulating ring 3, at the moment, the inlet pressure acts on a larger area to generate an additional force which is generally called expansion force to overcome the force of a spring 12, the area of a pressure storage cavity can be adjusted by adjusting a lower adjusting ring 3 so as to control the pressure in the pressure storage cavity, the force in the pressure storage cavity overcomes the force of the spring 12 to cause a valve flap 7 to leave a valve seat 1, a valve core 2 is opened in a sudden jump manner, once the valve core 2 is opened, a medium flows out from a sealing surface to form a secondary annular discharge area, the acting area of the medium is increased, the total upward acting force of the medium on the valve flap 7 and a valve flap seat 8 is far larger than the pretightening force of the spring 12, simultaneously, the valve flap rapidly reaches a full discharge state by virtue of recoil force of a flow beam, the valve flap 7 reaches a sufficient opening height in the sudden jump manner, the size of the pressure storage area can be adjusted by adjusting an upper adjusting ring 5 so as to control the pressure in the pressure storage cavity, the recoil pressure can be adjusted, the size of the gap is adjusted by adjusting the position of the backpressure adjusting sleeve 15 or the backpressure adjusting nut 16 is adjusted, so that the pressure in the backpressure sleeve 13 is controlled, the recoil pressure is adjusted, when the pressure of the medium is reduced to be smaller than the force of the spring 12, the valve clack 7 returns to the closing position under the force of the spring 12, the sealing specific pressure is generated between the closing parts again, the medium is prevented from flowing out from the sealing surfaces, the safety valve is in a new sealing closing state, and the system pressure returns to the normal working condition.

In summary, the following steps: according to the foot valve clamp spring assembling device, overpressure, opening and closing pressure difference and action performance of the safety valve are achieved by adopting the double adjusting rings and the back pressure adjusting mechanism, and the problems that the requirement on system operation cannot be met when the valve is opened and closed only by adjusting the safety valve, and potential safety hazards are caused to a steam pipeline are solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A foot valve clamp spring assembling device comprises a valve seat (1);

the method is characterized in that: the valve seat is characterized in that a valve core (2) is inserted into the valve seat (1), a lower adjusting ring (3) positioned inside the valve seat (1) is sleeved at the top of the valve core (2), a lower support screw (4) is inserted into the left side of the valve seat (1), an upper adjusting ring (5) is arranged at the top of the lower adjusting ring (3), an upper support screw (6) positioned at the top of the lower support screw (4) is inserted into the left side of the valve seat (1), a valve flap (7) is arranged at the top of the upper adjusting ring (5), a valve flap seat (8) is sleeved on the surface of the valve flap (7), a guide sleeve (9) is sleeved on the surface of the valve flap seat (8), the outer surface of the guide sleeve (9) is fixedly connected with the inner wall of the valve seat (1), a valve rod (10) is inserted into the valve seat (1), and the bottom end of the valve rod (10) sequentially penetrates through the valve seat (1) and the valve flap seat (8) and extends to the inside of the valve flap (7), the valve seat is characterized in that the top of the valve seat (1) is fixedly connected with a valve cover (11) which is sleeved on the surface of the valve rod (10), and a spring (12) which is sleeved on the surface of the valve rod (10) is arranged inside the valve cover (11).

2. The foot valve circlip assembling device according to claim 1, characterized in that: the top fixedly connected with back pressure cover (13) of disk seat (1), the left side intercommunication of back pressure cover (13) has back pressure screwed pipe (14), the top fixedly connected with back pressure adjusting sleeve (15) of back pressure cover (13), the pot head that back pressure screwed pipe (14) kept away from back pressure cover (13) is equipped with back pressure adjusting nut (16), the surface at valve rod (10) is established in back pressure adjusting sleeve (15) cover.

3. The foot valve circlip assembling device according to claim 2, characterized in that: the top of the back pressure sleeve (13) is fixedly connected with a radiator (17), and the radiator (17) is positioned between the back pressure sleeve (13) and the valve cover (11).

4. The foot valve circlip assembling device according to claim 3, characterized in that: the surface of the valve rod (10) is fixedly connected with a limiting ring (18), and the limiting ring (18) is located on the front face of the radiator (17).

5. The foot valve circlip assembling device according to claim 1, characterized in that: the surface of the valve rod (10) is sleeved with a butterfly spring (19), and the butterfly spring (19) is located inside the spring (12).

6. The foot valve circlip assembling device according to claim 1, characterized in that: the upper branch head screw (6) and the lower branch head screw (4) are respectively matched with the upper adjusting ring (5) and the lower adjusting ring (3) through teeth.