CN217234518U

CN217234518U - Indirect automatic pressure relief valve

Info

Publication number: CN217234518U
Application number: CN202123168480.7U
Authority: CN
Inventors: 严跃伟; 陈永东
Original assignee: Suzhou Yuejia Valve Co ltd
Current assignee: Suzhou Yuejia Valve Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-08-19
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses an indirect type automatic relief valve, including valve body, fly leaf and spring, valve body right-hand member intercommunication feed liquor pipe, valve body left end intercommunication drain pipe, be equipped with the case in the valve body, symmetrical swing joint fly leaf around the case left end, fly leaf other end swing joint slider, be equipped with the fixed plate on the slider, the fixed plate corresponds the slider and is equipped with spacing groove, slider and spacing groove sliding connection. The utility model discloses during the use, too big as the intraductal pressure of feed liquor, when the distance between case and the feed liquor pipe reached the biggest pressure release effect not good, rotatory handle drove the valve rod and rotates, and the valve rod drives first bevel gear, second bevel gear and threaded rod and rotates, and the threaded rod drives connecting plate and piston left motion to make piston and through-hole phase separation, liquid can discharge through the through-hole, further improvement the efficiency of pressure release.

Description

Indirect automatic pressure relief valve

Technical Field

The utility model relates to a relief valve technical field specifically is an indirect type automatic relief valve.

Background

The pressure relief valve can be automatically opened and closed according to the working pressure of the system, is generally arranged on equipment or a pipeline of a closed system to protect the safety of the system, and is automatically opened for pressure relief when the pressure in the equipment or the pipeline exceeds the set pressure of the pressure relief valve, so that the pressure of media in the equipment and the pipeline is ensured to be lower than the set pressure, the equipment and the pipeline are protected, and accidents are prevented.

When the existing indirect automatic pressure relief valve is used, the pressure can be automatically adjusted only through the device, and when the pressure is too high and the automatic pressure relief effect is not good, manual adjustment cannot be performed, so that inconvenience in use is caused. Therefore, the utility model provides an indirect type automatic relief valve to solve the above-mentioned problem of proposing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic relief valve of indirect type to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an indirect automatic pressure relief valve comprises a valve body, a movable plate and a spring, wherein the right end of the valve body is communicated with a liquid inlet pipe, the left end of the valve body is communicated with a liquid outlet pipe, a valve core is arranged in the valve body, the left end of the valve core is movably connected with the movable plate in a front-back symmetrical mode, the other end of the movable plate is movably connected with a slide block, a fixed plate is arranged on the slide block, a limit groove is formed in the fixed plate corresponding to the slide block, the slide block is in sliding connection with the limit groove, the spring is arranged at one end, away from each other, of the two slide blocks, the other end of the spring is fixedly connected with the inner wall of the valve body, a valve rod is arranged in the valve body, the upper end of the valve rod penetrates through the valve body, a first bevel gear is arranged on the valve rod, a second bevel gear is meshed with the first bevel gear, a threaded rod is arranged at the right end of the second bevel gear, a connecting plate is in threaded connection with the right end of the threaded rod, a second bearing is fixedly connected with the inner wall of the valve body, a piston is arranged at the right end of the connecting plate, the valve core is provided with a through hole corresponding to the piston, and the right end of the piston is positioned in the through hole.

As a further scheme of the utility model, the case shape is the big right little round platform in a left side, and case right-hand member diameter is less than the internal diameter of feed liquor pipe, the case of being convenient for and the feed liquor between the pipe be connected.

As the utility model discloses scheme further again, the limiting groove is equipped with the slide bar, and the slide bar runs through the slider, and slide bar and slider sliding connection are convenient for carry on spacingly to the slider, avoid the slider to drop from the limiting groove.

As the utility model discloses scheme further again, both ends and valve body inner wall fixed connection around the slide bar, and the spring housing is established on the slide bar.

As the utility model discloses scheme further again, the valve rod upper end is equipped with the handle, is equipped with anti-skidding line on the handle, is convenient for drive the valve rod and rotates to it carries out the ascending motion of horizontal direction to drive the piston.

As the utility model discloses further scheme again, the valve rod lower extreme is equipped with first bearing, first bearing lower extreme and valve body bottom fixed connection, the fixed and installation of the valve rod of being convenient for.

As the utility model discloses further scheme again, be equipped with the gag lever post on the connecting plate, the gag lever post left end runs through the connecting plate, gag lever post and connecting plate sliding connection, and gag lever post right-hand member and valve body inner wall fixed connection avoid the connecting plate to take place the rotation along with the rotation of threaded rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses during the use, with outside pipeline and feed liquor pipe and drain pipe intercommunication, when the pressure of feed liquor pipe is bigger, will drive the case and move left, the case drives two fly leafs and the slider and keeps away from the motion each other, slider compression spring, thereby increase the distance between case and the feed liquor pipe, thereby increase the capacity of feed liquor, realize the pressure release effect, then liquid passes through the drain pipe outflow valve body, the elastic potential energy through the spring that sets up can be directed against the size of different pressure and adjust the distance between case and the feed liquor pipe.

2. The utility model discloses during the use, too big as the intraductal pressure of feed liquor, when the distance between case and the feed liquor pipe reached the biggest pressure release effect not good, rotatory handle drove the valve rod and rotates, and the valve rod drives first bevel gear, second bevel gear and threaded rod and rotates, and the threaded rod drives connecting plate and piston left motion to make piston and through-hole phase separation, liquid can discharge through the through-hole, further improvement the efficiency of pressure release.

Drawings

Fig. 1 is a schematic structural diagram of an indirect automatic pressure relief valve.

Fig. 2 is a schematic cross-sectional view of an indirect automatic relief valve.

Fig. 3 is an enlarged schematic view of an indirect type automatic pressure relief valve at a position a in fig. 2.

Fig. 4 is an enlarged schematic view of an indirect type automatic pressure relief valve at B in fig. 2.

In the figure: 1. a valve body; 2. a liquid inlet pipe; 3. a liquid outlet pipe; 4. a valve stem; 401. a handle; 402. a first bearing; 5. a valve core; 6. a movable plate; 7. a through hole; 8. a piston; 9. a connecting plate; 10. a threaded rod; 11. a second bearing; 12. a slider; 13. a slide bar; 14. a spring; 15. a fixing plate; 16. a limiting groove; 17. a first bevel gear; 18. a second bevel gear; 19. a limiting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Example 1

Referring to fig. 1-4, in an embodiment of the present invention, an indirect automatic relief valve includes a valve body 1, a movable plate 6 and a spring 14, wherein a right end of the valve body 1 is communicated with a liquid inlet pipe 2, a left end of the valve body 1 is communicated with a liquid outlet pipe 3, a valve core 5 is disposed in the valve body 1, the left end of the valve core 5 is movably connected to the movable plate 6 in a front-back symmetric manner, the other end of the movable plate 6 is movably connected to a slider 12, the valve core 5 is a circular truncated cone with a large left end and a small right end, and a diameter of a right end of the valve core 5 is smaller than an inner diameter of the liquid inlet pipe 2;

be equipped with fixed plate 15 on the slider 12, fixed plate 15 corresponds slider 12 and is equipped with spacing groove 16,

slider

12 and 16 sliding connection in spacing groove, two the one end that slider 12 kept away from each other is equipped with spring 14, the spring 14 other end and 1 inner wall fixed connection of valve body, be equipped with slide bar 13 in the spacing groove 16, slide bar 13 runs through slider 12, slide bar 13 and slider 12 sliding connection, both ends and 1 inner wall fixed connection of valve body around the slide bar 13, and spring 14 cover is established on slide bar 13.

Example 2

In the embodiment of the utility model, a valve rod 4 is arranged in the valve body 1, the upper end of the valve rod 4 penetrates through the valve body 1, a first bevel gear 17 is arranged on the valve rod 4, a handle 401 is arranged at the upper end of the valve rod 4, anti-skid threads are arranged on the handle 401, a first bearing 402 is arranged at the lower end of the valve rod 4, the lower end of the first bearing 402 is fixedly connected with the bottom end of the valve body 1, a second bevel gear 18 is meshed on the first bevel gear 17, a threaded rod 10 is arranged at the right end of the second bevel gear 18, and the threaded rod 10 is in threaded connection with a connecting plate 9;

the right end of the threaded rod 10 is provided with a second bearing 11, the right end of the second bearing 11 is fixedly connected with the inner wall of the valve body 1, the connecting plate 9 is provided with a limiting rod 19, the left end of the limiting rod 19 penetrates through the connecting plate 9, the limiting rod 19 is slidably connected with the connecting plate 9, the right end of the limiting rod 19 is fixedly connected with the inner wall of the valve body 1, the right end of the connecting plate 9 is provided with a piston 8, the valve core 5 is provided with a through hole 7 corresponding to the piston 8, and the right end of the piston 8 is located in the through hole 7.

The utility model discloses a theory of operation is:

when the utility model is used, the external pipeline is communicated with the liquid inlet pipe 2 and the liquid outlet pipe 3, when the pressure ratio of the liquid inlet pipe 2 is larger, the valve core 5 is driven to move leftwards, the valve core 5 drives the two movable plates 6 and the slide block 12 to move away from each other, the slide block 12 compresses the spring 14, thereby the distance between the valve core 5 and the liquid inlet pipe 2 is increased, thereby the capacity of the liquid inlet is increased, the pressure relief effect is realized, then the liquid flows out of the valve body 1 through the liquid outlet pipe 3, the distance between the valve core 5 and the liquid inlet pipe 2 can be adjusted according to the different pressures by the elastic potential energy of the arranged spring 14, when the pressure in the liquid inlet pipe 2 is overlarge, the distance between the valve core 5 and the liquid inlet pipe 2 reaches the maximum pressure relief effect, the rotary handle 401 drives the valve rod 4 to rotate, the valve rod 4 drives the first bevel gear 17, the second bevel gear 18 and the threaded rod 10 to rotate, the threaded rod 10 drives the connecting plate 9 and the piston 8 to move leftwards, thereby make piston 8 and through-hole 7 phase separation, liquid can be discharged through-hole 7, further improved the efficiency of pressure release.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An indirect automatic pressure relief valve comprises a valve body (1), movable plates (6) and springs (14), and is characterized in that the right end of the valve body (1) is communicated with a liquid inlet pipe (2), the left end of the valve body (1) is communicated with a liquid outlet pipe (3), a valve core (5) is arranged in the valve body (1), the movable plates (6) are symmetrically and movably connected at the front and back of the left end of the valve core (5), the other end of each movable plate (6) is movably connected with a sliding block (12), a fixed plate (15) is arranged on each sliding block (12), a limiting groove (16) is arranged on each fixed plate (15) corresponding to each sliding block (12), each sliding block (12) is slidably connected with each limiting groove (16), the springs (14) are arranged at one ends of the two sliding blocks (12) far away from each other, the other ends of the springs (14) are fixedly connected with the inner wall of the valve body (1), a valve rod (4) is arranged in the valve body (1), and the upper end of the valve rod (4) penetrates through the valve body (1), and be equipped with first bevel gear (17) on valve rod (4), meshing second bevel gear (18) on first bevel gear (17), second bevel gear (18) right-hand member is equipped with threaded rod (10), and threaded connection connecting plate (9) are gone up in threaded rod (10), threaded rod (10) right-hand member is equipped with second bearing (11), second bearing (11) right-hand member and valve body (1) inner wall fixed connection, connecting plate (9) right-hand member is equipped with piston (8), and case (5) correspond piston (8) and are equipped with through-hole (7), and piston (8) right-hand member is located through-hole (7).

2. The indirect automatic pressure relief valve according to claim 1, wherein the valve core (5) is shaped as a truncated cone with a large left end and a small right end, and the diameter of the right end of the valve core (5) is smaller than the inner diameter of the liquid inlet pipe (2).

3. The indirect automatic pressure relief valve according to claim 1, wherein a sliding rod (13) is arranged in the limiting groove (16), the sliding rod (13) penetrates through the sliding block (12), and the sliding rod (13) is connected with the sliding block (12) in a sliding manner.

4. The indirect automatic pressure relief valve according to claim 3, wherein the front end and the rear end of the sliding rod (13) are fixedly connected with the inner wall of the valve body (1), and the spring (14) is sleeved on the sliding rod (13).

5. The indirect automatic pressure relief valve according to claim 1, wherein a handle (401) is arranged at the upper end of the valve rod (4), and anti-skid grains are arranged on the handle (401).

6. The indirect automatic pressure relief valve according to claim 1, wherein the lower end of the valve rod (4) is provided with a first bearing (402), and the lower end of the first bearing (402) is fixedly connected with the bottom end of the valve body (1).

7. The indirect automatic pressure relief valve according to claim 1, wherein a limiting rod (19) is arranged on the connecting plate (9), the left end of the limiting rod (19) penetrates through the connecting plate (9), the limiting rod (19) is connected with the connecting plate (9) in a sliding manner, and the right end of the limiting rod (19) is fixedly connected with the inner wall of the valve body (1).