CN219221385U

CN219221385U - Safety valve

Info

Publication number: CN219221385U
Application number: CN202320717130.1U
Authority: CN
Inventors: 麻小平; 郑素琴
Original assignee: Jinyun Jinheng Electronic Components Co ltd
Current assignee: Jinyun Jinheng Electronic Components Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-06-20
Anticipated expiration: 2033-04-04

Abstract

The utility model relates to the technical field of safety valves, in particular to a safety valve. The technical proposal comprises: the valve comprises a valve body and a spring, wherein a valve seat is fixed at the lower end of the valve body, a discharge pipe is arranged on the side wall of the valve body, a sleeve is fixed at the upper end of the valve body, the spring is arranged in the sleeve, a valve core is arranged in the valve body, the bottom of the valve core is propped against the upper end of the valve seat, a valve rod is fixed at the upper end of the valve core, the upper end of the valve rod penetrates through the valve body and the sleeve, a valve cover is fixed at the central position of the upper end of the sleeve, the upper end of the valve rod is movably connected in the valve seat, the bottom of the spring is fixed on the valve rod, the upper end of the spring is fixed on a movable plate, and the movable plate is slidably connected in the sleeve. According to the utility model, the rotation sleeve of the adjusting mechanism is utilized to rotate, and the fixed gear and the linkage gear are driven, so that the threaded rod can synchronously rotate, the spring is finally pushed to compress, the elastic pressure of the spring is changed, the adjustment of the safety pressure of the safety valve is realized, and the practicability of the safety valve is improved.

Description

Safety valve

Technical Field

The utility model relates to the technical field of safety valves, in particular to a safety valve.

Background

The safety valve is a safety protection device which is arranged on a specified container and can release the pressure in the container when the pressure in the container reaches a preset value, and is commonly used on high-pressure storage devices such as boilers, gas tanks and the like.

In the use of spring relief valve, mainly utilize spring extrusion to seal the valve port, when the condition that material pressure is greater than spring extrusion force, can continuously extrude the spring to realize the purpose of pressure release, the spring is fixed at the intraductal at the sleeve pipe of relief valve this moment, under the condition that the spring can't carry out independent compression or extend and reset, its relief valve can only bear appointed pressure, can't change bearing capacity, consequently install at different containers, can't bear pressure or safety pressure size according to the container and change, can only select the relief valve of looks adaptation, the practicality of relief valve has been reduced.

Disclosure of Invention

The utility model aims to solve the problems in the background technology and provides a safety valve capable of adjusting the bearing capacity.

The technical scheme of the utility model is as follows: the utility model provides a safety valve, includes valve body and spring, the valve body lower extreme is fixed with the disk seat, the discharge pipe is installed to the valve body lateral wall, the valve body upper end is fixed with the sleeve pipe, the spring is installed in the sleeve pipe, install the case in the valve body, case bottom offsets with the disk seat upper end, the case upper end is fixed with the valve rod, valve rod upper end passes valve body and sleeve pipe, sleeve pipe upper end central point puts and is fixed with the valve gap, valve rod upper end swing joint is in the disk seat, the spring bottom is fixed on the valve rod, the spring upper end is fixed on the fly leaf, fly leaf sliding connection is in the sleeve pipe, and is located the valve rod periphery, passes sleeve pipe upper end sliding connection has a set of ejector pin, ejector pin lower extreme fixedly connected with annular plate, and the annular plate can guarantee that the ejector pin can only go up and down flexible, can't rotate, annular plate bottom offsets with the fly leaf upper end, the sleeve pipe upper end is provided with adjustment mechanism.

Preferably, the adjusting mechanism comprises a fixed sleeve and a rotating sleeve, the fixed sleeve is fixedly connected to the outer side of the upper end of the sleeve, the rotating sleeve is rotationally connected to the upper end of the fixed sleeve, and the upper end of the ejector rod is positioned in the fixed sleeve and positioned on the periphery of the valve cover.

Preferably, a locating plate is fixed between the fixed sleeve and the valve cover, a threaded rod is connected to the locating plate in a rotating mode through the locating plate, the upper end of the threaded rod is located in the rotating sleeve, and the lower end of the threaded rod is connected to the ejector rod in a threaded mode.

Preferably, the upper end of the threaded rod is fixedly connected with a linkage gear, the inner wall of the upper end of the rotating sleeve is fixedly connected with a central gear, the linkage gear is meshed with the central gear, synchronous rotation of the linkage gear can be guaranteed, and finally the threaded rod is synchronously rotated.

Preferably, the bottom plate is fixed on the valve rod and positioned at the corresponding position of the lower end of the spring, and the lower end of the spring is fixed on the bottom plate, so that the bottom of the spring and the valve rod are conveniently fixed.

Preferably, a guide sleeve is fixed at the joint of the valve body and the sleeve, and the valve rod passes through the guide sleeve and is in sliding connection with the guide sleeve, so that the valve rod can only vertically move.

Compared with the prior art, the utility model has the following beneficial technical effects: the rotation sleeve of the adjusting mechanism is utilized to rotate, and the fixed gear and the linkage gear are driven to synchronously rotate, so that the spring is finally pushed to compress, the elastic pressure of the spring is changed, the safety pressure of the safety valve is adjusted, and the practicability of the safety valve is improved.

Drawings

FIG. 1 is a schematic view of the front cut-away structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic diagram of the connection structure of the annular plate and the ejector rod of the utility model;

fig. 4 is a schematic view of the internal structure of the rotating sleeve of the present utility model.

Reference numerals: 1. a valve body; 11. a valve seat; 12. a discharge pipe; 13. a valve core; 14. a sleeve; 15. a valve stem; 16. a spring; 17. a valve cover; 2. a movable plate; 3. a push rod; 4. an adjusting mechanism; 41. a fixed sleeve; 42. a rotating sleeve; 43. a threaded rod; 44. a positioning plate; 45. a linkage gear; 46. a sun gear; 5. and an annular plate.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Examples

As shown in fig. 1-4, the safety valve provided by the utility model comprises a valve body 1 and a spring 16, wherein a valve seat 11 is fixed at the lower end of the valve body 1, a discharge pipe 12 is arranged on the side wall of the valve body 1, a sleeve 14 is fixed at the upper end of the valve body 1, the spring 16 is arranged in the sleeve 14, a valve core 13 is arranged in the valve body 1, the bottom of the valve core 13 is propped against the upper end of the valve seat 11, a valve rod 15 is fixed at the upper end of the valve rod 15, a valve cover 17 is fixed at the central position of the upper end of the sleeve 14, the upper end of the valve rod 15 is movably connected in the valve seat 11, the bottom of the spring 16 is fixed on the valve rod 15, the upper end of the spring 16 is fixed on the movable plate 2, the movable plate 2 is slidably connected in the sleeve 14 and is positioned at the periphery of the valve rod 15, a group of ejector rods 3 is slidably connected through the upper end of the sleeve 14, the lower end of the ejector rods 3 is fixedly connected with an annular plate 5, the bottom of the annular plate 5 is propped against the upper end of the movable plate 2, an adjusting mechanism 4 is arranged at the upper end of the sleeve 14, a bottom plate is fixed at the position corresponding to the lower end of the valve rod 15 and positioned on the valve rod 15, the lower end of the spring 16 is fixedly arranged on the bottom plate, the lower end of the valve rod is fixedly arranged on the bottom plate, the valve sleeve 1 and the guide sleeve 15 is fixedly connected with the bottom the guide sleeve, and the guide sleeve 15 passes through the guide sleeve and passes through the guide sleeve.

The adjusting mechanism 4 comprises a fixed sleeve 41 and a rotating sleeve 42, the fixed sleeve 41 is fixedly connected to the outer side of the upper end of the sleeve 14, the rotating sleeve 42 is rotationally connected to the upper end of the fixed sleeve 41, the upper end of the ejector rod 3 is located in the fixed sleeve 41 and located on the periphery of the valve cover 17, a locating plate 44 is fixed between the fixed sleeve 41 and the valve cover 17, the locating plate 44 is rotationally connected with a threaded rod 43 through the locating plate 44, the upper end of the threaded rod 43 is located in the rotating sleeve 42, the lower end of the threaded rod 43 is in threaded connection with the ejector rod 3, the upper end of the threaded rod 43 is fixedly connected with a linkage gear 45, the inner wall of the upper end of the rotating sleeve 42 is fixedly connected with a central gear 46, the linkage gear 45 is meshed with the central gear 46, the rotating sleeve 42 is rotated to drive the central gear 46 to synchronously rotate, the threaded rod 43 can synchronously rotate through the transmission of the linkage gear 45, and finally drive the ejector rod 3 to vertically stretch, and the movable plate 2 is located in the sleeve 14.

In this embodiment, the valve core 13 is tightly sealed at the upper end of the valve seat 11 by using the top pressure of the spring 16, when the pressure of the material in the container is smaller than the pressure of the spring 16, the valve core 13 can not be opened, otherwise, the valve core 13 can be moved upwards and opened, and under the condition of further compressing the spring 16, the pressure in the container is reduced until the pressure reaches the safety pressure, the valve core 13 seals the upper end of the valve seat 11 again, after the safety valve is mounted in a different container or the safety pressure value is changed, the valve core 13 can drive the central gear 46 to synchronously rotate by using the rotation of the rotating sleeve 42, and the threaded rod 43 can synchronously rotate by the transmission of the linkage gear 45, finally, the ejector rod 3 is driven to vertically stretch, the movable plate 2 is positioned in the sleeve 14 to vertically stretch, wherein when the movable plate 2 moves upwards, the spring 16 is stretched, thereby reducing the elastic pressure, otherwise, the elastic pressure of the spring 16 can be increased, the valve core 13 can be decompressed and opened under different pressures, the safety valve can be suitable for different occasions, and the practicability of the safety valve is increased.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The utility model provides a safety valve, includes valve body (1) and spring (16), valve body (1) lower extreme is fixed with disk seat (11), discharge pipe (12) are installed to valve body (1) lateral wall, valve body (1) upper end is fixed with sleeve pipe (14), spring (16) are installed in sleeve pipe (14), its characterized in that: install case (13) in valve body (1), case (13) bottom offsets with disk seat (11) upper end, case (13) upper end is fixed with valve rod (15), valve rod (15) upper end is passed valve body (1) and sleeve pipe (14), sleeve pipe (14) upper end central point puts and is fixed with valve gap (17), valve rod (15) upper end swing joint is in disk seat (11), spring (16) bottom is fixed on valve rod (15), spring (16) upper end is fixed on fly leaf (2), fly leaf (2) sliding connection is in sleeve pipe (14), and is located valve rod (15) periphery, pass sleeve pipe (14) upper end sliding connection has a set of ejector pin (3), ejector pin (3) lower extreme fixedly connected with annular plate (5), annular plate (5) bottom offsets with fly leaf (2) upper end, sleeve pipe (14) upper end is provided with adjustment mechanism (4).

2. A safety valve according to claim 1, wherein the adjusting mechanism (4) comprises a fixed sleeve (41) and a rotating sleeve (42), the fixed sleeve (41) is fixedly connected to the outer side of the upper end of the sleeve (14), the rotating sleeve (42) is rotatably connected to the upper end of the fixed sleeve (41), and the upper end of the ejector rod (3) is located in the fixed sleeve (41) and located on the periphery of the valve cover (17).

3. A safety valve according to claim 2, characterized in that a positioning plate (44) is fixed between the fixing sleeve (41) and the valve cover (17), a threaded rod (43) is rotatably connected to the positioning plate (44) and penetrates through the positioning plate (44), the upper end of the threaded rod (43) is located in the rotating sleeve (42), and the lower end of the threaded rod (43) is in threaded connection with the ejector rod (3).

4. A safety valve according to claim 3, wherein the upper ends of the threaded rods (43) are fixedly connected with a linkage gear (45), the inner wall of the upper end of the rotating sleeve (42) is fixedly connected with a central gear (46), and the linkage gear (45) is meshed with the central gear (46).

5. A safety valve according to claim 1, wherein a bottom plate is fixed to the valve rod (15) and located at a position corresponding to the lower end of the spring (16), and the lower end of the spring (16) is fixed to the bottom plate.

6. A safety valve according to claim 1, characterized in that a guide sleeve is fixed at the joint of the valve body (1) and the sleeve (14), and the valve rod (15) passes through the guide sleeve and is slidingly connected with the guide sleeve.