CN216479126U - Dual recoil spring type safety valve - Google Patents
Dual recoil spring type safety valve Download PDFInfo
- Publication number
- CN216479126U CN216479126U CN202123028817.4U CN202123028817U CN216479126U CN 216479126 U CN216479126 U CN 216479126U CN 202123028817 U CN202123028817 U CN 202123028817U CN 216479126 U CN216479126 U CN 216479126U
- Authority
- CN
- China
- Prior art keywords
- valve
- disc
- recoil
- spring
- valve clack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to a dual recoil spring relief valve, include: the valve comprises a valve body, a valve seat, a valve clack, a guide sleeve, a recoil disc, a valve cover, a valve rod and a spring pressure setting device; the valve is characterized in that a lifting-assisting device is arranged between the valve clack and a through hole of the recoil disc, when the pressure of a medium of an inlet channel reaches a set pressure value, the valve clack is slightly opened, the ejector rod is pushed out radially under the pushing of the medium in the pressure guide hole and moves along an inclined guide surface to assist the opening of the valve clack, the medium pushes the recoil disc to drive the ejector rod and the valve clack to move upwards after passing through the sealing pair, the influence of the increasing force of the prepressing spring on the valve clack is counteracted, and the valve clack can rapidly reach a full-opening state; when the pressure of the medium in the inlet channel is reduced, the ejector rod moves towards the inside of the valve clack under the action of the spring and is separated from the recoil disc, so that the medium resistance of the valve clack when closed is reduced, and the closing speed is increased. The valve has the advantages of high opening speed, high seat returning speed, high opening height, small opening and closing pressure difference and the like.
Description
Technical Field
The utility model relates to a relief valve especially relates to a spring relief valve.
Background
The traditional spring type safety valve utilizes the pressure of a pre-pressing spring on a valve clack to balance the thrust of a medium acting on the valve clack, and the compression amount of the pre-pressing spring can be adjusted by rotating an adjusting threaded sleeve on the pre-pressing spring, so that a set pressure value is set. The disadvantages are that: the force of the pre-pressing spring loaded on the valve clack can change along with the opening of the valve clack, namely along with the rising of the valve clack, the compression amount of the pre-pressing spring is increased, the force acting on the valve clack is also increased, and the valve clack is influenced to rapidly reach a full-opening state. In addition, in the closing process of the valve clack, the pre-pressing spring force is gradually reduced, the valve clack is slow to return to a seat, and the opening and closing pressure difference is large.
Disclosure of Invention
To the technical defect who exists among the prior art, the utility model provides a when the valve clack is opened, can reach full open-type state rapidly, when closing, the valve clack returns the seat soon, opens and close the little dual recoil spring relief valve of pressure differential.
The utility model discloses a following technical scheme realizes:
a dual recoil spring type safety valve comprising: the valve body is provided with an inlet channel and a discharge channel, the valve seat is installed in the inlet channel of the valve body, the spring pressure setting device comprises a prepressing spring, an upper spring seat, a lower spring seat and an adjusting screw sleeve, the upper end of the guiding sleeve is fixedly installed between the valve body and the valve cover, a guiding hole at the lower end of the guiding sleeve is in movable fit with a guiding column on the back of the valve clack, the lower end face of the valve clack is provided with a sealing face matched with the valve seat, the lower end of the valve rod is pressed in a central hole of the guiding column on the back of the valve clack, the upper end of the valve rod upwards sequentially penetrates through the lower spring seat, the prepressing spring, the upper spring seat and the adjusting screw sleeve, the adjusting screw sleeve is connected in a screw hole at the upper end of the valve cover through external threads, and the lower end of the adjusting screw sleeve is pressed on the upper end face of the upper spring seat; the method is characterized in that: the upper end of the recoil disc is arranged outside the valve clack through a guide device and a limiting device, a return spring is arranged between the upper end face of the recoil disc and the guide sleeve, a through hole concentric with the valve clack is arranged on the lower end face of the recoil disc, the diameter of the through hole is larger than the outer diameter of the valve clack, and a lifting assisting device is arranged between the valve clack and the through hole of the recoil disc; the lifting assisting device is formed by symmetrically arranging piston devices in the valve clack in the radial direction, each piston device is formed by a piston cavity, a piston, an ejector rod and a spring, the outer circular surface of the piston is in dynamic sealing fit with the inner wall of the piston cavity, one end of the ejector rod is fixedly connected with the center of the end surface of one side of the piston, the other end of the ejector rod penetrates through an end cover of the piston cavity to be in abutting contact with the inner wall of a through hole of a recoil disc, the spring is installed between the piston outside the ejector rod and the end cover, the inner wall of the through hole of the recoil disc is provided with a conical inclined surface, and the piston cavity on the other side of the piston is communicated with an inlet channel of the valve body through a pressure inducing hole.
Preferably, the guiding device is formed by arranging a guiding disc at the upper end of the recoil disc, the center of the guiding disc is provided with a guiding hole, the outer circular surface of the upper end of the recoil disc is in movable fit with the guiding hole, and the outer circular surface of the guiding disc is fixedly connected with the inner cavity of the valve body.
Preferably, the limiting device is formed by arranging a limiting disc at the upper end of the recoil disc, the outer circular surface at the lower end of the limiting disc is fixedly connected with the inner hole wall at the upper end of the recoil disc through threads, the upper end of the limiting disc is provided with a radial limiting convex shoulder, and the lower circular surface of the radial limiting convex shoulder is pressed in the upper plane of the guide disc.
Preferably, a spring mounting groove is arranged in the upper ring surface of the radial limiting convex shoulder of the limiting disc, and a return spring is mounted between the spring mounting groove and the guide sleeve.
Preferably, the limiting device is formed by arranging a radial outer convex shoulder on the outer circular surface of the upper end of the recoil disc to be matched with the guide disc, and the radial outer convex shoulder of the recoil disc is pressed in the upper plane of the guide disc.
Preferably, a spring mounting groove is arranged in the upper ring surface of the radial outer convex shoulder of the recoil disc, and a return spring is mounted between the spring mounting groove and the guide sleeve.
Preferably, the end of the mandril is spherical.
Compared with the prior art, the utility model beneficial effect be: the lifting-assisting device is arranged between the valve clack and the through hole of the recoil disc, when the pressure of a medium of an inlet channel reaches a set pressure value, the valve clack is slightly opened, the ejector rod is pushed out radially under the pushing of the medium in the pressure guide hole and moves along the inclined guide surface to assist the opening of the valve clack, the medium pushes the recoil disc to drive the ejector rod and the valve clack to move upwards after passing through the sealing pair, the influence of the increasing force of the prepressing spring on the valve clack is counteracted, and the valve clack can rapidly reach a full-opening state; when the pressure of the medium in the inlet channel is reduced, the ejector rod moves towards the inside of the valve clack under the action of the spring and is separated from the recoil disc, so that the medium resistance of the valve clack when closed is reduced, and the closing speed is increased. The valve has the advantages of high opening speed, high seat returning speed, high opening height, small opening and closing pressure difference and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the valve comprises a valve body 1, a valve seat 2, an inlet passage 3, an adjusting ring 4, a valve clack 5, a spring 6, a mandril 7, an end cover 8, a recoil disc 9, a guide disc 10, a limiting disc 11, a return spring 12, a guide sleeve 13, a lower spring seat 14, a prepressing spring 15, a valve rod 16, a valve cover 17, an upper spring seat 18, an adjusting screw sleeve 19, a valve cap 20, a discharge passage 21, a conical inclined plane 22, a piston 23, a pressure guide hole 24 and a piston cavity 25.
The specific implementation mode is as follows:
as can be seen from fig. 1, a dual recoil spring type safety valve includes: the valve comprises a valve body 1, a valve seat 2, a valve clack 5, a guide sleeve 13, a recoil disc 9, a valve cover 17, a valve rod 16 and a spring pressure setting device, wherein the valve body 1 is provided with an inlet channel 3 and a discharge channel 21, the valve seat 2 is arranged in the inlet channel of the valve body 1, the spring pressure setting device comprises a pre-pressing spring 15, an upper spring seat 18, a lower spring seat 14 and an adjusting screw sleeve 19, the upper end of the guide sleeve 13 is fixedly arranged between the valve body 1 and the valve cover 17, a guide hole at the lower end of the guide sleeve is in movable fit with a guide column on the back of the valve clack 5, the lower end surface of the valve clack 5 is provided with a sealing surface which is mutually matched with the valve seat 2, an adjusting ring 4 is arranged on the outer side of the sealing surface of the valve seat 2, the vertical distance between the recoil disc 7 and the adjusting ring 4 is adjusted by manually rotating the adjusting ring 4, the medium flow direction is changed during discharge, the recoil disc 7 is rapidly pushed to move upwards to improve the opening height, the lower end of the valve rod 16 is pressed in a central hole of the guide column on the back of the valve clack 5, the upper end of the adjusting threaded sleeve 19 is connected in a threaded hole in the upper end of the valve cover 17 through external threads, the lower end of the adjusting threaded sleeve is pressed against the upper end surface of the upper spring seat 18, the elasticity of the pre-pressing spring 15 is adjusted through adjusting the adjusting threaded sleeve 19, and a setting pressure value is set; the method is characterized in that: the upper end of a recoil disc 9 is arranged on the outer side of the valve clack 5 through a guide device and a limiting device, the guide device axially guides the recoil disc 9 to keep the recoil disc 9 to freely move up and down, the limiting device limits the recoil disc 9 up and down to limit the moving distance of the recoil disc 9, a through hole concentric with the valve clack 5 is arranged on the lower end face of the recoil disc 9, the diameter of the through hole is larger than the outer diameter of the valve clack 5, so that the stress area of a medium is reduced when the valve clack 5 is recocked, the recocked resistance of the valve clack 5 is reduced, the recocked speed is improved, and a lifting assisting device is arranged between the valve clack 5 and the through hole of the recoil disc 9; the lifting assisting device is formed by symmetrically arranging piston devices in the radial direction in the valve clack 5, each piston device is composed of a piston cavity 25, a piston 23, a push rod 7 and a spring 6, the outer circular surface of the piston 23 is in dynamic seal fit with the inner wall of the piston cavity 25, one end of the push rod 7 is fixedly connected with the center of one side end face of the piston 23, the piston cavity 25 and the push rod 7 can be integrally processed and formed, the other end of the push rod 7 penetrates through an end cover 8 of the piston cavity 25 to be in abutting contact with the inner wall of a through hole of a recoil disc 9, the spring 6 is arranged between the piston 23 and the end cover 8, the inner wall of the through hole of the recoil disc 9 is provided with a conical inclined surface 22, the piston cavity 25 on the other side of the piston 23 is communicated with the inlet channel 3 of the valve body 1 through a pressure guide hole 24, when the medium pressure of the inlet channel 3 reaches a set pressure, the medium pressure pushes the valve clack 5 to be opened, meanwhile pushes the piston 23 to push the push rod 7 to be pushed out in the radial direction through the pressure guide hole 24, and the push rod 7 rises along the conical inclined surface 22, the auxiliary valve clack 5 is opened to counteract the increase of the compression force of the pre-pressing spring 15 along with the opening of the valve clack 5, and when the pressure of the medium in the inlet channel is reduced, the ejector rod 7 retracts towards the inside of the valve clack 5 under the action of the spring 6 and is separated from the contact with the recoil disc 9. The two piston devices can be symmetrically arranged in the diameter direction of the valve clack 5, and can also be uniformly arranged in the circumferential direction of the valve clack 5.
The guiding device is formed by arranging a guiding disc 10 at the upper end of a recoil disc 9, a guiding hole is formed in the center of the guiding disc 10, the outer circular surface of the upper end of the recoil disc 9 is in movable fit with the guiding hole, so that the recoil disc 9 can move up and down in the guiding hole of the guiding disc 10, and the outer circular surface of the guiding disc 10 is fixedly connected to the inner cavity of the valve body 1.
The limiting device is formed by arranging a limiting disc 11 at the upper end of the recoil disc 9, the outer circular surface of the lower end of the limiting disc 11 is fixedly connected with the inner hole wall of the upper end of the recoil disc 9 through threads, the upper end of the limiting disc 11 is provided with a radial limiting convex shoulder, and the lower circular surface of the radial limiting convex shoulder is pressed in the upper plane of the guide disc 10 to limit the downward movement of the recoil disc 9.
A spring installation groove is arranged in the upper ring surface of a radial limiting convex shoulder of the limiting disc 11, and a return spring 12 is installed between the spring installation groove and the guide sleeve 13.
The limiting device is formed by arranging a radial outer convex shoulder on the outer circular surface of the upper end of the recoil disc 9 and matching the guide disc 10, and the radial outer convex shoulder of the recoil disc 9 is pressed in the upper plane of the guide disc 10.
A spring mounting groove is arranged in the upper ring surface of the radial outer convex shoulder of the recoil disc 9, and a return spring 12 is arranged between the spring mounting groove and the guide sleeve 13.
The end part of the mandril 7 adopts a spherical surface, so that the moving performance of the mandril 7 on the conical inclined surface 22 is improved.
Claims (6)
1. A dual recoil spring type safety valve comprising: the valve comprises a valve body (1), a valve seat (2), a valve clack (5), a guide sleeve (13), a recoil disc (9), a valve cover (17), a valve rod (16) and a spring pressure setting device, wherein the spring pressure setting device comprises a prepressing spring (15), an upper spring seat (18), a lower spring seat (14) and an adjusting threaded sleeve (19), the upper end of the guide sleeve (13) is fixedly arranged between the valve body (1) and the valve cover (17), a guide hole at the lower end of the guide sleeve is in movable fit with a guide column on the back of the valve clack (5), the lower end surface of the valve clack (5) is provided with a sealing surface which is mutually matched with the valve seat (2), an adjusting ring (4) is arranged on the outer side of the sealing surface of the valve seat (2), the lower end of the valve rod (16) is pressed in a central hole of the guide column on the back of the valve clack (5), and the upper end of the valve rod upwards sequentially penetrates through the lower spring seat (14), the prepressing spring (15), the upper spring seat (18) and the adjusting threaded sleeve (19); the method is characterized in that: the upper end of the recoil disc (9) is arranged outside the valve clack (5) through a guide device and a limiting device, the lower end face of the recoil disc (9) is provided with a through hole concentric with the valve clack (5), the diameter of the through hole is larger than the outer diameter of the valve clack (5), and a lifting assisting device is arranged between the valve clack (5) and the through hole of the recoil disc (9); the lifting assisting device is formed by symmetrically arranging piston devices in a valve clack (5) in a radial direction, each piston device is formed by a piston cavity (25), a piston (23), an ejector rod (7) and a spring (6), the outer circular surface of each piston (23) is matched with the inner wall of the corresponding piston cavity (25) in a dynamic sealing mode, one end of each ejector rod (7) is fixedly connected with the center of one side end face of each piston (23), the other end of each ejector rod penetrates through an end cover (8) of each piston cavity (25) to be in top contact with the inner wall of a through hole of a recoil disc (9), each spring (6) is installed between each piston (23) and the corresponding end cover (8), the inner wall of the through hole of the recoil disc (9) is provided with a conical inclined surface (22), and the piston cavity (25) on the other side of each piston (23) is communicated with an inlet channel (3) of a valve body (1) through a pressure guide hole (24).
2. A dual recoil spring type safety valve according to claim 1 wherein: the guiding device is formed by arranging a guiding disc (10) at the upper end of a recoil disc (9), a guiding hole is formed in the center of the guiding disc (10), the outer circular surface of the upper end of the recoil disc (9) is in movable fit with the guiding hole, and the outer circular surface of the guiding disc (10) is fixedly connected to the inner cavity of the valve body (1).
3. A dual recoil spring type safety valve according to claim 2 wherein: the limiting device is formed by arranging a limiting disc (11) at the upper end of a recoil disc (9), the outer circular surface of the lower end of the limiting disc (11) is fixedly connected with the inner hole wall of the upper end of the recoil disc (9) through threads, a radial limiting convex shoulder is arranged at the upper end of the limiting disc (11), and the lower circular surface of the radial limiting convex shoulder is pressed in the upper plane of the guide disc (10).
4. A dual recoil spring type safety valve according to claim 3 wherein: a spring installation groove is arranged in the upper ring surface of a radial limiting convex shoulder of the limiting disc (11), and a return spring (12) is installed between the spring installation groove and the guide sleeve (13).
5. A dual recoil spring type safety valve according to claim 2 wherein: the limiting device is formed by arranging a radial outer convex shoulder on the outer circular surface of the upper end of the recoil disc (9) to be matched with the guide disc (10), and the radial outer convex shoulder of the recoil disc (9) is pressed in the upper plane of the guide disc (10).
6. A dual recoil spring type safety valve according to claim 1 or 2 or 3 or 4 or 5 wherein: the end part of the mandril (7) adopts a spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123028817.4U CN216479126U (en) | 2021-12-06 | 2021-12-06 | Dual recoil spring type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123028817.4U CN216479126U (en) | 2021-12-06 | 2021-12-06 | Dual recoil spring type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216479126U true CN216479126U (en) | 2022-05-10 |
Family
ID=81419661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123028817.4U Active CN216479126U (en) | 2021-12-06 | 2021-12-06 | Dual recoil spring type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216479126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212512A (en) * | 2023-11-07 | 2023-12-12 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve for low-temperature medium |
-
2021
- 2021-12-06 CN CN202123028817.4U patent/CN216479126U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212512A (en) * | 2023-11-07 | 2023-12-12 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve for low-temperature medium |
| CN117212512B (en) * | 2023-11-07 | 2024-02-09 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve for low-temperature medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216479126U (en) | Dual recoil spring type safety valve | |
| US11491556B2 (en) | Adjustable mandrel and fixture | |
| CN107061834B (en) | Built-in driving axial-flow type regulating valve | |
| CN216142733U (en) | Underground drainage gas production robot and cut-off valve thereof | |
| CN114033876A (en) | Dual recoil spring type safety valve | |
| CN114033875A (en) | Automatic adjusting spring type safety valve | |
| CN212536903U (en) | High-strength pressure reducing valve | |
| CN205504142U (en) | Two -way big latus rectum solenoid valve of high pressure | |
| CN110206712B (en) | Unloading device of reciprocating compressor air quantity adjusting system | |
| CN204827881U (en) | Long column stopper circulating pump | |
| CN114688264A (en) | Electromagnetic gas emergency cut-off valve capable of being opened under pressure | |
| CN114542643A (en) | Variable damping force automobile shock absorber | |
| CN216479123U (en) | Automatic adjusting spring type safety valve | |
| CN216479125U (en) | Soft sealing spring type safety valve | |
| CN211901126U (en) | Ultrahigh pressure proportional overflow valve | |
| CN219692358U (en) | High-temperature high-pressure pilot type safety valve | |
| CN210088090U (en) | Pressure regulating overflow valve of high-pressure pump | |
| CN205001607U (en) | Lifting type check valve | |
| CN210266049U (en) | Pressure reducing valve | |
| CN105065738B (en) | Adjustable flow pilot operated safety valve with induction tube | |
| CN218971157U (en) | Full-drift-diameter pressure-controlled multiple circulation valve | |
| CN113623350A (en) | Built-in adjustable electromagnetic valve | |
| CN202140495U (en) | Novel monotubular shock absorber | |
| CN212509545U (en) | Pneumatic piston type stop valve | |
| CN219549699U (en) | Back pressure prevention double-sealing spring type safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |