CN219221384U

CN219221384U - Direct-acting overflow valve

Info

Publication number: CN219221384U
Application number: CN202320705505.2U
Authority: CN
Inventors: 康乐; 康彤
Original assignee: Beijing Pafeinuo Precision Machinery Co ltd
Current assignee: Beijing Pafeinuo Precision Machinery Co ltd
Priority date: 2023-04-01
Filing date: 2023-04-01
Publication date: 2023-06-20
Anticipated expiration: 2033-04-01

Abstract

The application provides a direct-acting overflow valve, which comprises a valve body, wherein the valve body is provided with a liquid inlet, a liquid outlet and a channel, and the liquid inlet is communicated with the liquid outlet through the channel; the valve body is internally provided with a valve core, a spring and a push block, the valve core is abutted against the side wall of the liquid inlet, the push block is arranged in the channel in a sliding manner, and the spring is respectively connected with the push block and the valve core; the end part of the valve body is provided with an adjusting assembly, and the adjusting assembly comprises a threaded rod, a rotating rod and a sliding block; the threaded rod passes through the valve body and is rotationally connected with the push block, the threaded rod is in threaded fit with the valve body, the rotating rod is hinged with one end of the threaded rod, which is far away from the push block, and the sliding block is arranged at the end part of the rotating rod. The present application can facilitate screwing the adjusting screw when operating in a smaller space.

Description

Direct-acting overflow valve

Technical Field

The application relates to the technical field of valves, in particular to a direct-acting overflow valve.

Background

The overflow valve is also called a safety valve, and is a key safety application guarantee for guaranteeing the pressure pipeline and the pressure container. For example, when the pressure of the system exceeds a specified value, the safety valve is opened to discharge a part of gas or liquid in the system into the outlet, so that the pressure of the system does not exceed an allowable value, and the system is ensured not to be in accident due to the excessive pressure.

Referring to fig. 1 and 2, the related art relief valve generally includes a valve body, a valve spool, a spring, a push block, and an adjusting screw. The valve body is the cylinder, and the inlet has been seted up to valve body one end, and the liquid outlet has been seted up to the valve body lateral wall, has seted up the passageway in the valve body, and the passageway communicates inlet and liquid outlet. The valve core and the pushing block are both arranged in the channel, and the liquid outlet is positioned between the valve core and the pushing block. The spring is fixedly connected with the valve core and the push block respectively, the valve core is abutted with the liquid inlet, and the valve core can open or close the liquid inlet. The adjusting screw rod penetrates through the valve body and is rotationally connected with the pushing block, the adjusting screw rod is in threaded connection with the valve body, and when the adjusting screw rod is screwed, the pushing force of the spring on the valve core can be adjusted. When the valve is used, the liquid inlet is communicated with the pipeline, and when the pressure of liquid in the pipeline is smaller than a safety value, the valve core is difficult to be jacked by the pressure of the liquid at the liquid inlet, and the liquid normally flows in the pipeline; when the pressure in the pipeline exceeds the allowable safety value, the liquid at the liquid inlet pushes the valve core open to enter the channel, and finally the liquid is discharged from the liquid outlet, so that the pipeline safety is protected.

However, in the related art, when the spring pushes the valve core to abut against the side wall of the oil inlet, and when the pressure of the liquid allowed to enter the pipeline needs to be increased, the adjusting screw needs to be screwed, and because the spring has a reaction force to the adjusting screw, particularly for some direct-acting overflow valves with larger spring elasticity, the screw needs to be screwed with larger torque, and at this time, the adjusting screw needs to be screwed by means of a tool such as a wrench. When the operation space around the direct acting type overflow valve is small, tools such as a wrench are difficult to rotate, thereby causing inconvenience in use.

Disclosure of Invention

To facilitate screwing the adjusting screw when operating in a smaller space, the present application provides a direct acting relief valve.

The application provides a direct acting overflow valve, adopts following technical scheme:

the direct-acting overflow valve comprises a valve body, wherein the valve body is provided with a liquid inlet, a liquid outlet and a channel, and the liquid inlet is communicated with the liquid outlet through the channel; the valve body is internally provided with a valve core, a spring and a push block, the valve core is abutted against the side wall of the liquid inlet, the push block is arranged in the channel in a sliding manner, and the spring is respectively connected with the push block and the valve core;

the end part of the valve body is provided with an adjusting assembly, and the adjusting assembly comprises a threaded rod, a rotating rod and a sliding block; the threaded rod passes through the valve body and is rotationally connected with the push block, the threaded rod is in threaded fit with the valve body, the rotating rod is hinged with one end of the threaded rod, which is far away from the push block, and the sliding block is arranged at the end part of the rotating rod.

By adopting the technical scheme, when the safety value of the direct-acting overflow valve needs to be adjusted, the rotating rod is rotated around the hinge shaft, so that the rotating rod is perpendicular to the threaded rod, at the moment, the rotating rod is rotated around the axis of the threaded rod, the rotating rod can increase torque to drive the threaded rod to rotate, then the push block is slid, and the force is applied to the valve core through the spring; therefore, the safety value of the direct-acting overflow valve can be conveniently adjusted in a small space, tools such as a wrench can be reduced, and the convenience of operation is improved.

Optionally, the joint groove has been seted up to the valve body tip, sliding block and dwang sliding fit, the sliding block can with the joint groove grafting cooperation.

By adopting the technical scheme, after the safety value of the direct-acting overflow valve is adjusted, the sliding block slides and is inserted into the insertion groove, so that the position of the current threaded rod can be conveniently fixed, and the stability after adjustment is improved; in the process of transporting the direct-acting overflow valve, the storage can be facilitated.

Optionally, the clamping groove is an annular groove, and the clamping groove is coaxial with the threaded rod.

Through adopting above-mentioned technical scheme, after the dwang drives the threaded rod and rotates certain angle, because the joint groove is the ring channel, the sliding block can peg graft in the joint inslot at 0 to 360 degrees optional positions.

Optionally, the circumferential wall of the clamping groove is provided with a friction surface, the surface of the sliding block is provided with a friction surface, and the friction surface of the clamping groove is abutted with the friction surface of the sliding block.

Through adopting above-mentioned technical scheme, when the sliding block pegged graft in the joint inslot, because the friction surface in joint groove and the friction surface looks butt of sliding block, the circumference wall in sliding groove has certain resistance to the sliding block, reduces the sliding block and is located the joint inslot and take place pivoted condition.

Optionally, an elastic pad is arranged in the clamping groove, the elastic pad is annular, and the elastic pad is attached to and connected with the circumferential wall of the clamping groove.

Through adopting above-mentioned technical scheme, when the sliding block is located the joint inslot, the sliding block extrudees the elastic pad to make the elastic pad exert pressure to the sliding block, reduce the sliding block and take place pivoted condition in the joint inslot.

Optionally, the clamping groove is internally provided with a clamping ring, the clamping ring is attached to and connected with the elastic pad, and the circumferential wall of the clamping ring is spaced from the circumferential wall of the clamping groove.

Through adopting above-mentioned technical scheme, when the sliding block is located the joint inslot, the sliding block extrusion joint ring makes the joint ring not coaxial with the joint groove to can reduce the sliding block and take place pivoted condition in the joint groove, the joint ring can protect the elastic pad simultaneously, promotes life.

Optionally, a dovetail groove is formed along the length direction of the sliding block, and two ends of the dovetail groove in the length direction are spaced from two ends of the sliding block;

the end part of the rotating rod is provided with a dovetail block, and the dovetail block is in sliding fit with the dovetail groove.

Through adopting above-mentioned technical scheme, because dovetail and dovetail sliding fit, dovetail length direction's both ends all have the interval with the both ends of sliding block to make dwang and sliding block separation, the sliding block can slide to the joint inslot.

Optionally, a guide rod is arranged in the valve body, one end of the guide rod is connected with the pushing block, the other end of the guide rod penetrates through the valve core, and the spring is wound on the guide rod.

Through adopting above-mentioned technical scheme, the guide bar can play the guide effect to the removal of spring and case, makes the case can shutoff inlet at the in-process that resets, reduces the case that the case appears the position deviation and does not shutoff inlet when resetting.

In summary, the present application includes at least one of the following beneficial effects:

1. the rotating rod can rotate around the hinge shaft, so that the torque is increased, the threaded rod can be rotated in a smaller operation space, and the safety value of the direct-rotation overflow valve can be adjusted;

2. the sliding block can slide into the clamping groove, can be convenient to store, and can reduce the situation that the threaded rod rotates due to accidents after being adjusted.

Drawings

FIG. 1 is a schematic view of the overall structure of a direct-acting overflow valve according to the related art;

FIG. 2 is a schematic cross-sectional view of a related art direct acting relief valve;

FIG. 3 is a schematic view showing the overall structure of a direct-acting relief valve according to embodiment 1 of the present application;

FIG. 4 is a schematic cross-sectional view of a direct acting relief valve according to embodiment 1 of the present application;

fig. 5 is a partial structural schematic diagram showing a threaded rod, a rotating rod and a sliding block according to embodiment 1 of the present application;

FIG. 6 is a schematic view showing the overall structure of a direct-acting relief valve according to embodiment 2 of the present application;

FIG. 7 is a schematic view showing the overall structure of a direct-acting relief valve according to embodiment 3 of the present application;

FIG. 8 is a schematic diagram showing an explosion structure of the elastic pad and the valve body in embodiment 3 of the present application;

FIG. 9 is a schematic view showing the overall structure of a direct-acting relief valve according to embodiment 4 of the present application;

fig. 10 is a schematic view showing a partial structure of the snap ring and the elastic pad in embodiment 4 of the present application.

Reference numerals illustrate: 1. a valve body; 11. a liquid inlet; 12. a liquid outlet; 13. a channel; 14. a clamping groove; 2. a valve core; 3. a spring; 4. a pushing block; 5. adjusting a screw; 6. a guide rod; 7. an adjustment assembly; 71. a threaded rod; 72. a rotating lever; 73. a sliding block; 731. a chute; 74. a clamping ring; 75. an elastic pad.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-10.

Referring to fig. 1 and 2, a related art direct acting relief valve generally includes a valve body 1, a valve spool 2, a spring 3, a push block 4, and an adjusting screw 5. The valve body 1 is a cylinder, one end of the valve body 1 is provided with a liquid inlet 11, the side wall of the valve body 1 is provided with a liquid outlet 12, a channel 13 is arranged in the valve body 1, and the liquid inlet 11 is communicated with the liquid outlet 12 through the channel 13. The valve core 2 and the push block 4 are both arranged in the channel 13, and the liquid outlet 12 is positioned between the valve core 2 and the push block 4. The spring 3 is fixedly connected with the valve core 2 and the push block 4 respectively, the valve core 2 is abutted to the liquid inlet 11, and the valve core 2 can open or close the liquid inlet 11. The adjusting screw 5 passes through the valve body 1 and is rotationally connected with the push block 4, the adjusting screw 5 is in threaded connection with the valve body 1, and when the adjusting screw 5 is screwed, the thrust of the spring 3 to the valve core 2 can be adjusted.

When the valve is used, the liquid inlet 11 is communicated with a pipeline, and when the pressure of liquid in the pipeline is smaller than a safety value, the valve core 2 is difficult to be jacked by the pressure of the liquid at the liquid inlet 11, and the liquid normally flows in the pipeline; when the pressure in the pipeline exceeds the allowable safety value, the liquid at the liquid inlet 11 pushes the valve core 2 into the channel 13, and finally is discharged from the liquid outlet 12, so that the pipeline safety is protected.

Example 1:

embodiment 1 of the present application provides a direct acting relief valve.

Referring to fig. 3 and 4, a direct-acting overflow valve comprises a valve body 1, wherein the valve body 1 is a cylinder, a liquid inlet 11 is formed in the end part of the valve body 1, a liquid outlet 12 is formed in the side wall of the valve body 1, a channel 13 is formed in the valve body 1, and the liquid outlet 12 is communicated with the liquid inlet 11 through the channel 13.

Referring to fig. 4, a valve body 1 is provided therein with a valve core 2, a spring 3, a guide rod 6, and a push block 4. The valve core 2 is abutted with the side wall of the liquid inlet 11, and the push block 4 is slidably arranged in the channel 13. One end of a guide rod 6 is fixedly connected with the push block 4, the other end of the guide rod 6 penetrates through the valve core 2, and the guide rod 6 is in sliding fit with the valve core 2. The spring 3 is wound on the guide rod 6, and the spring 3 is fixedly connected with the valve core 2 and the push block 4 respectively.

Referring to fig. 4, the valve body 1 is provided at an end remote from the inlet 11 with an adjustment assembly 7, the adjustment assembly 7 comprising a threaded rod 71 and a rotating rod 72. The threaded rod 71 passes through the end of the valve body 1 and is rotatably connected with the push block 4, the threaded rod 71 is in threaded connection with the valve body 1, and the end of the rotating rod 72 is hinged with the end of the threaded rod 71.

Referring to fig. 5, the adjusting assembly 7 further includes a sliding block 73, and a sliding groove 731 is formed along a length direction of the sliding block 73. In this embodiment, the sliding groove 731 is a dovetail groove, and two ends of the sliding groove 731 in the length direction are spaced from two ends of the sliding block 73 in the length direction. The end of the rotating rod 72 remote from the threaded rod 71 is provided as a dovetail block, which is in sliding engagement with the dovetail groove.

Referring to fig. 4, the end of the valve body 1 is provided with a clamping groove 14, and a sliding block 73 is in plug-in fit with the clamping groove 14. In the present embodiment, the plurality of the engaging grooves 14 are uniformly provided around the axis of the threaded rod 71.

The implementation principle of the direct acting overflow valve in embodiment 1 of the application is as follows: when the rotating rod 72 rotates around the hinge shaft until the rotating rod is perpendicular to the threaded rod 71, the rotating rod 72 can increase torque at this time, so that the threaded rod 71 is convenient to rotate, and the push block 4 is further moved, so that the thrust of the spring 3 to the valve core 2 is adjusted, and the safety value of the direct-acting overflow valve is changed. After the adjustment is completed, the sliding block 73 slides into the clamping groove 14, so that the stability of the rotating rod 72 is improved.

Example 2:

embodiment 2 of the present application provides a direct acting relief valve.

Referring to fig. 6, embodiment 2 of the present application differs from embodiment 1 in that: the clamping groove 14 is an annular groove, the clamping groove 14 is coaxial with the threaded rod 71, and the sliding block 73 can be inserted into the clamping groove 14. The circumferential wall of the clamping groove 14 is provided with a friction surface, and the surface of the sliding block 73 is also provided with a friction surface, so that the stability of the sliding block 73 inserted into the clamping groove 14 is improved.

Example 3:

embodiment 3 of the present application provides a direct acting relief valve.

Referring to fig. 7 and 8, embodiment 3 of the present application is different from embodiment 1 in that: the adjusting assembly 7 further comprises an elastic pad 75, the elastic pad 75 is annular, and the elastic pad 75 is adhered to and fixedly connected with the circumferential outer wall of the clamping groove 14. When the sliding block 73 is inserted into the clamping groove 14, the elastic pad 75 can apply a pressing force to the sliding block 73.

Example 4:

embodiment 4 of the present application provides a direct acting relief valve.

Referring to fig. 9 and 10, embodiment 4 of the present application differs from embodiment 3 in that: the adjusting assembly 7 further comprises a clamping ring 74, wherein the clamping ring 74 is annular, and the clamping ring 74 is attached to and fixedly connected with the elastic pad 75. When the sliding block 73 is inserted into the clamping groove 14, the elastic pad 75 and the clamping ring 74 apply extrusion force to the sliding block 73, and the clamping ring 74 can protect the elastic pad 75 and prolong the service life of the elastic pad 75.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A direct acting overflow valve, characterized in that: the valve comprises a valve body (1), wherein the valve body (1) is provided with a liquid inlet (11), a liquid outlet (12) and a channel (13), and the liquid inlet (11) is communicated with the liquid outlet (12) through the channel (13); a valve core (2), a spring (3) and a push block (4) are arranged in the valve body (1), the valve core (2) is abutted to the side wall of the liquid inlet (11), the push block (4) is slidably arranged in the channel (13), and the spring (3) is respectively connected with the push block (4) and the valve core (2);

an adjusting assembly (7) is arranged at the end part of the valve body (1), and the adjusting assembly (7) comprises a threaded rod (71), a rotating rod (72) and a sliding block (73); the threaded rod (71) passes through the valve body (1) and is rotationally connected with the push block (4), the threaded rod (71) is in threaded fit with the valve body (1), the rotating rod (72) is hinged with one end, far away from the push block (4), of the threaded rod (71), and the sliding block (73) is arranged at the end part of the rotating rod (72).

2. A direct acting relief valve as defined in claim 1 wherein: the end part of the valve body (1) is provided with a clamping groove (14), the sliding block (73) is in sliding fit with the rotating rod (72), and the sliding block (73) can be in plug-in fit with the clamping groove (14).

3. A direct acting overflow valve as claimed in claim 2 wherein: the clamping groove (14) is an annular groove, and the clamping groove (14) is coaxial with the threaded rod (71).

4. A direct acting overflow valve as claimed in claim 3 wherein: the circumferential wall of the clamping groove (14) is provided with a friction surface, the surface of the sliding block (73) is provided with a friction surface, and the friction surface of the clamping groove (14) is abutted with the friction surface of the sliding block (73).

5. A direct acting overflow valve as claimed in claim 3 wherein: elastic pads (75) are arranged in the clamping grooves (14), the elastic pads (75) are annular, and the elastic pads (75) are attached to and connected with the circumferential walls of the clamping grooves (14).

6. A direct acting overflow valve as claimed in claim 3 wherein: still be provided with joint ring (74) in joint groove (14), joint ring (74) are laminated and are connected with elastic pad (75), joint ring (74) circumference wall and joint groove (14) circumference wall have the interval.

7. A direct acting overflow valve as claimed in claim 2 wherein: a dovetail groove is formed along the length direction of the sliding block (73), and two ends of the dovetail groove in the length direction are spaced from two ends of the sliding block (73);

the end of the rotating rod (72) is provided with a dovetail block, and the dovetail block is in sliding fit with the dovetail groove.

8. A direct acting relief valve as defined in claim 1 wherein: the valve is characterized in that a guide rod (6) is arranged in the valve body (1), one end of the guide rod (6) is connected with the push block (4), the other end of the guide rod (6) penetrates through the valve core (2), and the spring (3) is wound on the guide rod (6).