One-way valve with pressure relief protection function

Abstract

The utility model discloses a one-way valve with a pressure relief protection function, and particularly relates to the technical field of one-way valves, which comprises a valve body, a discharge pipe is arranged at one end of the valve body in a penetrating manner, an outer valve sleeve is arranged on one side of the valve body in a penetrating manner, a pressure relief mechanism is arranged in the outer valve sleeve, and the pressure relief mechanism comprises a pressure relief valve seat arranged in the outer valve sleeve. A guide groove is formed in the outer valve sleeve, a guide ring is slidably arranged in the guide groove, a pressure relief valve element is fixedly arranged in the guide ring, a pressure relief spring is fixedly arranged at the top of the pressure relief valve element, an adjusting disc is slidably arranged on the inner wall of the valve body, and a threaded rod is rotatably arranged on one side of the adjusting disc. When the fluid pressure abnormally rises, the pressure relief channel can be automatically opened, the one-way valve and a conveying system are effectively protected, the position of the pressure relief valve element can be conveniently and manually adjusted, pressure relief parameters are flexibly controlled, and the requirements of different working conditions are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to one -way valve technical field more specifically, the utility model relates to a one -way valve with pressure relief protection function. BACKGROUND

[0002] The one -way valve is a switch that allows gas or liquid to flow in one direction. It is installed on a sealed container. By allowing gas or liquid to enter the container through the one -way valve, it can prevent the container from leaking during use. To improve the safety of the sealed container and prevent damage caused by excessive internal pressure, a pressure relief valve is usually installed on the container to ensure that the pressure inside the container does not exceed a safe value.

[0003] In existing mechanisms, the pressure relief channel of the one -way valve is always closed in the open state. Only after the one -way valve is closed can the pressure relief channel automatically open under the internal high pressure. The pressure inside the sealed container has already exceeded the safe value. At this time, the pressure relief channel is still closed and cannot be relieved in time, which may cause damage to the sealed container and even safety accidents.

[0004] According to the search, a one -way valve with pressure relief protection function is disclosed in Chinese patent No. CN212564563U. When the sealed container A needs to be filled with gas or liquid, the external pressure of the gas or liquid can push the one -way valve core away, and the gas or liquid can enter the container A through the input hole. When the internal pressure of the sealed container A is too high, the internal gas or liquid can overcome the force of the elastic member and push the pressure relief valve core outward, and the pressure relief hole can release pressure outward. The opening direction of the one -way valve core and the pressure relief valve core is opposite, which allows the material to flow in and out to form a circulation, facilitating feeding, ensuring the safety and convenience of the sealed container, and providing pressure relief function. When the internal pressure of the sealed container is too high, the pressure relief valve core and the pressure relief hole can release pressure in time, ensuring safety, such as water inlet, which can control the air pressure intensity while water inlet, the outer valve sleeve is convenient to install with the sealed container through the connecting sleeve, the overall structure is practical and perfect, and the application prospect is good.

[0005] However, the position of the pressure relief valve core is fixed in actual use, although the pressure relief function is realized, but in different working conditions, the pressure relief parameters cannot be accurately controlled, and the complex and variable fluid conveying pressure demand cannot be adapted. UTILITY MODEL CONTENTS

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a one -way valve with pressure relief protection function to solve the problems raised in the above background.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A one-way valve with pressure relief protection function, including valve body, one end of the valve body is provided with discharge pipe, one side of the valve body is provided with outer valve sleeve, the inside of the outer valve sleeve is provided with pressure relief mechanism;

[0009] The pressure relief mechanism includes a pressure relief valve seat arranged in the inner part of the outer valve sleeve, a guide groove is formed in the inner part of the outer valve sleeve, a guide ring is slidably arranged in the guide groove, a pressure relief valve core is fixedly arranged in the inner part of the guide ring, a pressure relief spring is fixedly arranged on the top of the pressure relief valve core, an adjusting disc is slidably arranged on the inner wall of the valve body, a threaded rod is rotatably arranged on one side of the adjusting disc, one end of the threaded rod penetrates through the outer valve sleeve and is threadedly connected with the outer valve sleeve, and a handle is fixedly arranged on one end of the threaded rod.

[0010] By adopting the above technical scheme, the pressure relief channel can be automatically opened when the fluid pressure abnormally rises, the one-way valve and the conveying system are effectively protected, the position of the adjusting disc can be manually adjusted, the pressure relief parameters can be flexibly controlled, and different working condition requirements can be met.

[0011] As a further description of the above technical scheme, the inner wall of the valve body is fixedly provided with a valve body spring, one end of the valve body spring is fixedly provided with a guide column, a plurality of grooves are formed on the surface of the guide column, the guide column is slidably connected with the valve body, a valve rod is fixedly arranged on one side of the guide column, a plurality of through holes are formed on the surface of the valve rod, a valve core is fixedly arranged on one end of the valve rod, a valve seat is fixedly arranged in the inner part of the valve body, and one end of the valve core is arranged in a conical shape.

[0012] By adopting the above technical scheme, the conical valve core is tightly combined with the valve seat by the elastic force provided by the valve body spring, the reverse flow of the fluid is effectively prevented, the sliding connection of the guide column and the groove design ensure smooth movement, the through holes on the valve rod are beneficial to the uniform passage of the fluid, and the overall one-way conduction function of the one-way valve is reliable, and the working stability and the precision of fluid control are improved.

[0013] As a further description of the above technical scheme, the valve body and the outer valve sleeve are made of carbon steel material, the surfaces of the valve body and the outer valve sleeve are provided with a corrosion-resistant coating, the corrosion-resistant coating is made of an epoxy resin coating, one end of the valve body is provided with a feeding port, one side of the outer valve sleeve is provided with a pressure relief pipe, and the outer parts of the valve body and the discharge pipe are fixedly provided with mounting rings.

[0014] By adopting the above technical scheme, the valve body and the outer valve sleeve are made of carbon steel material, the strength is good and can meet the use requirements, the surface epoxy resin corrosion-resistant coating can resist fluid corrosion and prolong the service life, and the practicability and durability of the device are improved as a whole.

[0015] The technical effects and advantages of the utility model are as follows:

[0016] Compared with the prior art, the pressure relief valve core is attached to the pressure relief valve seat under the action of the pressure relief spring, the pressure relief channel is closed, when the fluid pressure in the valve body abnormally rises, the high pressure overcomes the spring force, pushes the pressure relief valve core to stably slide along the guide groove through the guide ring, opens the channel, the fluid is discharged through the outer valve sleeve and the pressure relief pipe, effectively reduces the pressure, protects the check valve and the whole fluid conveying, and the operator can rotate the handle, moves the adjusting disc through the threaded connection between the threaded rod and the outer valve sleeve, flexibly adjusts the compression amount of the pressure relief spring, accurately controls the pressure relief flow and pressure range, meets different working condition requirements, and the manual adjusting function enhances the applicability and practicality.

[0017] Compared with the prior art, the fluid reverse flow is effectively prevented through the cooperation of the valve body spring, the valve rod, the valve core and the corrosion-resistant coating, when working, the fluid entering the inlet can overcome the spring force to push the related components to move, open the channel to realize the forward conduction, the lubricating oil in the guide column groove ensures smooth pushing, the valve body and the outer valve sleeve are made of carbon steel, the strength and processing performance are good, the pressure bearing requirement is met, the surface epoxy resin corrosion-resistant coating can prevent corrosion and rust during long-term contact with the fluid, prolongs the service life, reduces the maintenance and replacement cost, and improves the economy and safety of the whole fluid conveying system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model.

[0019] Figure 2 It is a whole front view cross section structure schematic view of the utility model.

[0020] Figure 3 It is a pressure relief mechanism front view cross section structure schematic view of the utility model.

[0021] Figure 4 It is a pressure relief mechanism cross section structure schematic view of the utility model.

[0022] Figure 5 It is a valve body cross section structure schematic view of the utility model.

[0023] The figure mark is: 1, valve body;2, discharge pipe;3, outer valve sleeve;4, pressure relief valve seat;5, guide groove;6, guide ring;7, pressure relief valve core;8, pressure relief spring;9, adjusting disc;10, threaded rod;11, valve body spring;12, guide column;13, groove;14, valve rod;15, through hole;16, valve core;17, valve seat;18, corrosion-resistant coating;19, inlet;20, pressure relief pipe;21, mounting ring. DETAILED DESCRIPTION

[0024] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0025] The utility model discloses a one -way valve with pressure -relief protection function as Figures 1-5 The utility model discloses a one -way valve with pressure -relief protection function as

[0026] The pressure -relief mechanism includes the pressure -relief valve seat 4 of setting in the outside valve bush 3, and the inside of outside valve bush 3 is opened to have the guide groove 5, and the inside of guide groove 5 is slidably arranged with the guide ring 6, and the inside of guide ring 6 is fixedly arranged with the pressure -relief valve element 7, and the top of pressure -relief valve element 7 is fixedly arranged with the pressure -relief spring 8, and the inner wall of valve body 1 is slidably arranged with the adjusting disc 9, one side of adjusting disc 9 is rotatably arranged with the threaded rod 10, and one end of threaded rod 10 penetrates through outside valve bush 3 and is threadedly connected with outside valve bush 3, and one end of threaded rod 10 is fixedly arranged with the handle, and the bottom of pressure -relief valve element 7 is closely attached to the pressure -relief valve seat 4 under the action of pressure -relief spring 8 originally, and keeps the pressure -relief passage closed state, if the internal fluid pressure appears the situation of abnormal rise in the normal working process of valve body 1, needs pressure relief, and the fluid pressure that is too high will act on pressure -relief valve element 7, overcomes the elastic force of pressure -relief spring 8, and pushes pressure -relief valve element 7 to move, and pressure -relief valve element 7 slides along guide groove 5 through the guide ring 6 fixed on the surface stably, ensures that the movement direction is accurate and stable, thereby opens the pressure -relief passage, and the fluid that is too high in valve body 1 can pass through the space in the inside of outside valve bush 3, then passes through the pressure -relief pipe 20 through the penetration arranged at one side of outside valve bush 3 and is discharged outward, thereby realizes the pressure -relief operation to the inside of valve body 1, effectively reduces the pressure that is too high, avoids the damage to the one -way valve and the whole fluid conveying system connected with it due to the pressure that is too high, plays the key pressure protection effect;

[0027] And, the operator can manually adjust the pressure -relief process by rotating the handle, since the handle is fixedly connected with the threaded rod 10, and the threaded rod 10 is threadedly connected with the outside valve bush 3, when rotating the handle, the threaded rod 10 will rotate and move axially along the outside valve bush 3, and then drive the adjusting disc 9 connected with it to move, so that the position of the adjusting disc 9 in the inside of the outside valve bush 3 can be manually and flexibly adjusted according to the actual pressure condition and pressure -relief demand, and then the compression amount of the pressure -relief spring 8 is adjusted, since the elastic force of the pressure -relief spring 8 is proportional to its compression amount, thereby controlling the flow rate and pressure range of the pressure relief, etc. Parameters, realize more accurate pressure relief operation, meet the pressure relief requirements under different working conditions.

[0028] Referring to Figures 2-3 As shown, the inner wall of the valve body 1 is fixedly provided with a valve body spring 11, one end of the valve body spring 11 is fixedly provided with a guide column 12, the surface of the guide column 12 is provided with a plurality of grooves 13, the guide column 12 is in sliding connection with the valve body 1, one side of the guide column 12 is fixedly provided with a valve rod 14, the surface of the valve rod 14 is provided with a plurality of through holes 15, one end of the valve rod 14 is fixedly provided with a valve core 16, the inside of the valve body 1 is fixedly provided with a valve seat 17, one end of the valve core 16 is provided in a conical shape, the valve body spring 11 is in a natural stretched state, one end thereof is connected to the inner wall of the valve body 1, the other end thereof is connected to the guide column 12, the guide column 12 can move axially in the valve body 1 in a sliding connection manner with the valve body 1, the valve rod 14 is fixed to one side of the guide column 12, and the valve core 16 at one end of the valve rod 14 is in abutment with the valve seat 17 fixed to the inside of the valve body 1 under the action of the valve body spring 11, meanwhile, the plurality of through holes 15 provided on the valve rod 14 inside the valve body 1, the liquid flowing back flows into the inside of the valve rod 14 through the plurality of through holes 15, thereby exerting a downward pressure on the valve core 16, thereby making the valve core 16 completely and tightly abut against the valve seat 17, at this time, the device is in a closed state, effectively preventing the fluid from flowing in the reverse direction;

[0029] When the fluid enters the inside of the valve body 1 from the inlet 19 at one end of the valve body 1, the fluid exerts a pressure on the valve core 16, the pressure overcomes the force of the valve body spring 11, pushes the valve core 16, the valve rod 14 and the guide column 12 connected thereto to move along the axial direction of the valve body 1, so that the valve core 16 moves away from the valve seat 17, thereby opening the passage, the fluid can pass through smoothly, and flows out through the discharge pipe 2 at one end of the valve body 1, the plurality of grooves 13 provided on the surface of the guide column 12 are provided with lubricating oil inside, thereby ensuring the smooth pushing of the valve core 16.

[0030] Referring to Figures 4-5 As shown, the valve body 1 and the outer valve sleeve 3 are both made of carbon steel, the surfaces of the valve body 1 and the outer valve sleeve 3 are both provided with a corrosion-resistant coating 18 made of an epoxy resin coating, one end of the valve body 1 is provided with an inlet 19, one side of the outer valve sleeve 3 is provided with a pressure relief pipe 20, the outside of the valve body 1 and the discharge pipe 2 are both fixedly provided with a mounting ring 21, the mounting operation is completed through the mounting ring 21 fixedly provided on the outside of the valve body 1 and the discharge pipe 2, the valve body 1 and the outer valve sleeve 3 are both made of carbon steel, this material has good strength and processing performance, can meet the structural requirements of the check valve in terms of bearing fluid pressure, meanwhile, the surfaces of them are both provided with the corrosion-resistant coating 18 made of the epoxy resin coating, this coating can effectively isolate the carbon steel material from the fluid in the working environment where the check valve is in long-term contact with various fluids, prevent the carbon steel from rusting and corroding, prolong the service life of the check valve, ensure its long-term stable and reliable operation, reduce the maintenance cost and replacement frequency, improve the economy and safety of the entire fluid conveying system.

[0031] Working principle of this utility model:

[0032] This utility model is a one-way valve with pressure relief protection function. When the device is not in use, the valve body spring 11 is in a naturally extended state. One end of the spring is connected to the inner wall of the valve body 1, and the other end is connected to the guide post 12. The guide post 12 can move axially within the valve body 1 by sliding connection with the valve body 1. The valve stem 14 is fixed to one side of the guide post 12. The valve core 16 at one end of the valve stem 14 is in contact with the valve seat 17 fixed inside the valve body 1 under the action of the valve body spring 11. At the same time, the multiple through holes 15 opened on the valve stem 14 inside the valve body 1 allow the backflowing liquid to flow into the interior of the valve stem 14 through the multiple through holes 15, thereby exerting downward pressure on the valve core 16, so that the valve core 16 is completely and tightly in contact with the valve seat 17. At this time, the device is in a closed state, effectively preventing the fluid from flowing backward.

[0033] When fluid enters the valve body 1 from the inlet 19 at one end of the valve body 1, the fluid applies pressure to the valve core 16. This pressure overcomes the force of the valve body spring 11 and pushes the valve core 16, valve stem 14 and the guide post 12 connected thereto to move together along the axial direction of the valve body 1, so that the valve core 16 leaves the valve seat 17, thereby opening the channel and allowing the fluid to pass smoothly through and flow out through the outlet pipe 2 at one end of the valve body 1. The multiple grooves 13 on the surface of the guide post 12 are filled with lubricating oil, thereby ensuring the smooth movement of the valve core 16.

[0034] In the pressure relief mechanism, the pressure relief valve core 7 is originally tightly fitted to the pressure relief valve seat 4 at its bottom under the action of the pressure relief spring 8, keeping the pressure relief channel closed. During the normal operation of the valve body 1, if the internal fluid pressure rises abnormally and pressure relief is required, the excessive fluid pressure will act on the pressure relief valve core 7, overcoming the elastic force of the pressure relief spring 8 and pushing the pressure relief valve core 7 to move. The pressure relief valve core 7 slides stably along the guide groove 5 through the guide ring 6 fixed on the surface, ensuring accurate and smooth movement, thereby opening the pressure relief channel. The excessive fluid in the valve body 1 can then be discharged outward through the space inside the outer valve sleeve 3 and through the pressure relief pipe 20 set on one side of the outer valve sleeve 3, thereby realizing the pressure relief operation inside the valve body 1, effectively reducing the excessive pressure, and avoiding damage to the check valve and the entire fluid delivery system connected to it due to excessive pressure, playing a key pressure protection role.

[0035] Moreover, the operator can manually adjust the pressure relief process by rotating the handle, since the handle is fixedly connected with the threaded rod 10, and the threaded rod 10 is threadedly connected with the outer valve sleeve 3, when the handle is rotated, the threaded rod 10 will be rotated and axially moved along the outer valve sleeve 3, and further drive the adjustment disc 9 connected with it to move, so that the position of the adjustment disc 9 in the outer valve sleeve 3 can be manually and flexibly adjusted according to the actual pressure condition and pressure relief demand, and the compression amount of the pressure relief spring 8 is further adjusted, since the elastic force of the pressure relief spring 8 is proportional to its compression amount, so that the flow rate and the pressure range of the pressure relief and other parameters are controlled, more accurate pressure relief operation is realized, and the pressure relief requirements under different working conditions are met.

[0036] The mounting ring 21 fixedly arranged outside the valve body 1 and the discharge pipe 2 is used to complete the mounting operation, the valve body 1 and the outer valve sleeve 3 are both made of carbon steel material, which has good strength and processing performance, and can meet the structural requirements of the one-way valve in terms of bearing fluid pressure, and the anticorrosive coating 18 made of epoxy resin coating is arranged on the surface of them, which can effectively isolate the carbon steel material from the fluid under the working environment of long-term contact of the one-way valve with various fluids, prevent the carbon steel from rusting and corroding, prolong the service life of the one-way valve, ensure its long-term stable and reliable operation, reduce the maintenance cost and replacement frequency, and improve the economy and safety of the entire fluid conveying system.

[0037] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A check valve with pressure relief protection function, comprising a valve body (1), characterized in that: One end of the valve body (1) is provided with a discharge pipe (2), one side of the valve body (1) is provided with an outer valve sleeve (3), the inside of the outer valve sleeve (3) is provided with a pressure relief mechanism; The pressure relief mechanism comprises a pressure relief valve seat (4) arranged in the outer valve sleeve (3), a guide groove (5) is formed in the inner part of the outer valve sleeve (3), a guide ring (6) is slidably arranged in the guide groove (5), a pressure relief valve core (7) is fixedly arranged in the inner part of the guide ring (6), a pressure relief spring (8) is fixedly arranged on the top of the pressure relief valve core (7), an adjusting disc (9) is slidably arranged on the inner wall of the valve body (1), a threaded rod (10) is rotatably arranged on one side of the adjusting disc (9), one end of the threaded rod (10) penetrates through the outer valve sleeve (3) and is threadedly connected with the outer valve sleeve (3), and a handle is fixedly arranged on one end of the threaded rod (10).

2. The check valve with pressure relief protection function according to claim 1, characterized in that: The inner wall of the valve body (1) is fixedly provided with a valve body spring (11), one end of the valve body spring (11) is fixedly provided with a guide column (12), and a plurality of grooves (13) are formed in the surface of the guide column (12).

3. The check valve with pressure relief protection function according to claim 2, characterized in that: The guide column (12) is slidably connected with the valve body (1), a valve rod (14) is fixedly arranged on one side of the guide column (12), and a plurality of through holes (15) are formed in the surface of the valve rod (14).

4. The check valve with pressure relief protection function according to claim 3, characterized in that: One end of the valve rod (14) is fixedly provided with a valve core (16), the inside of the valve body (1) is fixedly provided with a valve seat (17), and one end of the valve core (16) is arranged in a conical shape.

5. The check valve with pressure relief protection function according to claim 1, characterized in that: The valve body (1) and the outer valve sleeve (3) are both made of carbon steel, and the surfaces of the valve body (1) and the outer valve sleeve (3) are both provided with a corrosion-resistant coating (18) made of an epoxy resin coating.

6. The check valve with pressure relief protection function according to claim 1, characterized in that: One end of the valve body (1) is provided with an inlet (19), and one side of the outer valve sleeve (3) is provided with a pressure relief pipe (20).

7. The check valve with pressure relief protection function according to claim 1, characterized in that: The outer part of the valve body (1) and the discharge pipe (2) are both fixedly provided with a mounting ring (21).

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