An intermittent automatic pressure relief valve

Abstract

An intermittent automatic pressure relief valve belongs to the technical field of valves; it includes a bottom water valve notch box. An installation groove is opened at the lower end of the bottom water valve notch box. A fixed installation column is fixedly installed at the front end inside the installation groove. A safety spring that provides extrusion force is fixedly installed at the rear side of the fixed installation column. In the present invention, when the water flow is too fast and the water pressure is large, the pressure of the water flow will push the valve core to move away from the middle limit block, and the water flow will enter the middle water storage tank and be pressure-relieved through the middle water outlet pipe. When the water flow pressure pushes the valve core away from the bottom limit block, the water flow will be pressure-relieved through the bottom water outlet pipe. When the water flow is too large, the water flow enters the high-level water storage tank and pushes the movable valve core downward, and the water flow will be pressure-relieved through the upper water outlet pipe. It achieves the effect of opening different pressure relief valves when encountering different pressures, avoiding excessive force on the valve core when facing large pressures and the potential safety hazards generated over a long period of time.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to an intermittent automatic pressure relief valve. Background Art

[0002] The pressure relief valve is also called a safety valve. It can automatically open or close according to the working pressure of the system. Automatic pressure relief valves are generally installed on some closed system equipment or on some safety devices that protect the system. When the pressure set by the installed equipment exceeds the pressure relief valve, the machine will automatically open the pressure relief valve. Such an automatic device can prevent accidents. There are two main types of pressure relief valve structures: spring type and lever type. The spring type means that the seal between the valve disc and the valve seat relies on the force of the spring, and the lever type relies on the force of the lever and the hammer.

[0003] Most of the automatic pressure relief valves currently available on the market have only one valve port. When facing greater pressure, the force exerted on the valve core is too great, causing serious damage, which will pose a safety hazard in the long run. For this reason, we propose an intermittent automatic pressure relief valve. Summary of the invention

[0004] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides an intermittent automatic pressure relief valve.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: an intermittent automatic pressure relief valve, comprising a bottom water valve slot box, a mounting slot is provided at the lower end of the bottom water valve slot box, a fixed mounting column is fixedly installed at the front end of the inner part of the mounting slot, a safety spring providing extrusion force is fixedly installed at the rear side of the fixed mounting column, a connecting fixing column is fixedly installed at the side of the safety spring away from the fixed mounting column, and a valve core that can move forward and backward is fixedly installed at the upper end of the connecting fixing column;

[0006] A snap plate is movably mounted on the upper end of the mounting groove, a crawler cover is movably mounted on the upper outer surface of the snap plate, a bottom limit block is fixedly mounted on the left side of the bottom water valve slot box, and the right outer wall of the bottom limit block is tightly fitted with the left outer wall of the connecting fixed column;

[0007] The upper end of the bottom water valve slot box is fixedly installed with a middle water valve slot box, the upper side of the middle water valve slot box is fixedly installed with an upper water valve slot box, and the upper end of the upper water valve slot box is fixedly installed with a movable switch device.

[0008] Preferably, the bottom water valve slot box is provided with a water inlet hole, which penetrates the front outer wall of the bottom water valve slot box and extends to the inside of the bottom water valve slot box, and a water inlet pipe is fixedly installed on one side of the water inlet hole away from the inside of the bottom water valve slot box;

[0009] Preferably, a bottom water outlet is provided on the rear outer wall of the bottom water valve notch box. The shape and size of the bottom water outlet are the same as those of the water inlet hole. A bottom water outlet pipe is fixedly installed on the side of the bottom water outlet away from the inside of the bottom water valve notch box. The shape and size of the bottom water outlet pipe are the same as those of the water inlet pipe.

[0010] Preferably, a middle-layer water storage tank is arranged inside the middle-layer water valve notch box. A middle-layer water outlet is provided on the rear outer wall surface of the middle-layer water valve notch box. The middle-layer water outlet penetrates through the outer wall of the middle-layer water valve notch box and extends to the inside of the middle-layer water valve notch box. A middle-layer water outlet pipe is fixedly installed at the rear of the middle-layer water outlet. A middle-layer limit block is fixedly installed on the front side of the middle-layer water valve notch box.

[0011] Preferably, an upper-layer water outlet is provided on the rear outer wall of the upper-layer water valve notch box. A movable valve core is movably installed on the inner wall of the upper-layer water outlet. A movable connecting column is movably installed at the lower end of the movable valve core. A notch bottom plate is movably installed at the lower end of the movable valve core. An upper-layer water outlet pipe is fixedly installed on the rear outer wall surface of the upper-layer water valve notch box. The inside of the upper-layer water valve notch box is hollow and provided with an upper-layer water storage tank. The shape and size of the upper-layer water storage tank are the same as those of the middle-layer water storage tank. An upper-layer limit block is fixedly installed on the front end of the upper-layer water valve notch box.

[0012] Preferably, the outer wall of the movable valve core fits with the inner wall of the upper-layer water outlet. The shape and size of the upper-layer water outlet pipe are the same as those of the middle-layer water outlet pipe. The shape and size of the upper-layer limit block are the same as those of the middle-layer limit block.

[0013] Preferably, the hollow area of the movable switch device penetrates through the outer surface of the upper end of the upper-layer water valve notch box and extends to the inside of the upper-layer water valve notch box.

[0014] Preferably, a fixed card slot is provided on the outer surface of the movable switch device. A threaded hole is provided inside the movable switch device. Internal threads are provided inside the threaded hole. An external handle is movably installed at the upper end of the fixed card slot. A threaded column is fixedly installed at the lower end of the external handle. External threads are provided on the outer circumference of the threaded column. The external threads on the outer circumference of the threaded column fit with the internal threads of the threaded hole. An external handle is fixedly installed at the upper end of the movable column.

[0015] The beneficial effects of the present invention are:

[0016] (1) This intermittent automatic pressure relief valve, when the water flow is too fast and the water pressure is high, the pressure of the water flow will push the valve core to move away from the middle limit block. At this time, the water will enter the middle water storage tank and release the pressure through the middle water outlet pipe. When the water flow pressure pushes the valve core away from the bottom limit block, the water will release the pressure through the bottom water outlet pipe. When the water flow is too large, the water will enter the high-level water storage tank, pushing the movable valve core downward, and the water will release the pressure through the upper water outlet pipe. Through this approach, different pressure relief valves will be opened when encountering different pressures, avoiding the effect of excessive force on the valve core when facing high pressure, thereby causing serious damage and long-term safety hazards.

[0017] (2) This intermittent automatic pressure relief valve automatically opens and closes the pressure relief valve by water pressure. The coordinated use of the three valves achieves intermittent, efficient and reasonable use. Since the bottom valve core is pulled by the coordinated use of the safety spring and the fixed column, the safety spring will rust if immersed in water for a long time, affecting the use effect and life. The crawler cover is movably installed on the installation groove where the safety spring is located, achieving a waterproof effect, avoiding rust on the safety spring and extending the service life.

[0018] (3) The intermittent automatic pressure relief valve will produce a lot of water stains and dirt inside after long-term use, which will cause blockage of the internal pipes, thereby affecting the flood discharge effect. The new intermittent automatic pressure relief valve is provided with a movable switch device at its upper end. The operator can regularly open the movable switch device, add cleaning agent to the new automatic pressure relief valve, and clean it with a cleaning tool. This practice prevents the internal water stains and dirt from clogging the automatic pressure relief valve.

[0019] (4) When the water pressure is low, the force on the valve core is small, so the moving distance is effective. The water can only enter the middle water storage tank and release pressure through the middle pressure relief valve. As the water pressure continues to increase, the number of opened water valves also increases. By grading the water pressure, the appropriate water valve and the number of water valves can be selected. This approach can achieve the effect of automatically controlling the opening of the appropriate number of water valves for pressure relief.

[0020] (5) The movable switch device of the intermittent automatic pressure relief valve is locked and sealed by means of a threaded connection. When in use, the flow needs to be cut off in advance, and then the thread is rotated counterclockwise to disassemble and clean the inside of the water valve to prevent clogging. This method ensures that the movable switch device can be used for a long time and solves the water leakage problem caused by improper sealing of the movable switch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the present invention;

[0022] Figure 2 It is a partial schematic diagram of the bottom water valve slot box in the present invention;

[0023] Figure 3 It is a partial schematic diagram of the position of the crawler cover in the present invention;

[0024] Figure 4 It is a partial schematic diagram of the middle-layer water valve notch box of the present invention;

[0025] Figure 5 It is a partial schematic diagram of the upper water valve notch box of the present invention;

[0026] Figure 6 It is a partial schematic diagram of the movable switch device in the present invention.

[0027] In the figure: 1 bottom water valve slot box, 11 water inlet hole, 12 water inlet pipe, 13 bottom water outlet, 14 bottom water outlet pipe, 15 installation slot, 16 fixed installation column, 17 safety spring, 18 connection fixing column, 19 valve core, 110 snap plate, 111 crawler cover plate, 112 bottom limit block, 2 middle water valve slot box, 21 middle water storage tank, 22 middle water outlet, 23 middle water outlet pipe, 24 middle limit block, 3 upper water valve slot box, 31 upper water outlet, 32 movable valve core, 33 movable connecting column, 34 slot bottom plate, 35 upper water outlet pipe, 36 upper water storage tank, 37 upper limit block, 4 movable switch device, 41 fixed slot, 42 threaded hole, 43 movable column, 44 threaded column, 45 external handle. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0029] Embodiment: An intermittent automatic pressure relief valve, such as Figures 1-6As shown, it includes a bottom water valve notch box 1. The bottom water valve notch box 1 includes a water inlet hole 11, and the water inlet hole 11 is in the shape of a circular hole. The water inlet hole 11 penetrates through the front outer wall of the bottom water valve notch box 1 and extends to the inside of the bottom water valve notch box 1. A water inlet pipe 12 is fixedly installed on the side away from the inside of the bottom water valve notch box 1. The water inlet pipe 12 is a circular column with a hollow interior. A bottom water outlet 13 is provided on the rear outer wall of the bottom water valve notch box 1. The shape and size of the bottom water outlet 13 are the same as those of the water inlet hole 11. A bottom water outlet pipe 14 is fixedly installed on the side away from the inside of the bottom water valve notch box 1. The shape and size of the bottom water outlet pipe 14 are the same as those of the water inlet pipe 12. An installation groove 15 is provided at the lower end of the bottom water valve notch box 1. The installation groove 15 is in the shape of a rectangular groove. A fixed installation column 16 is fixedly installed at the front end inside the installation groove 15. The fixed installation column 16 is a circular column. A safety spring 17 is fixedly installed at the rear of the fixed installation column 16. The safety spring 17 is a known technology and will not be elaborated here. A connection fixed column 18 is fixedly installed on the side of the safety spring 17 away from the fixed installation column 16. A valve core 19 is fixedly installed at the upper end of the connection fixed column 18. The valve core 19 is a rectangular block. A snap plate 110 is movably installed at the upper end of the installation groove 15. The inner wall of the snap plate 110 fits with the outer wall of the installation groove 15. A shoe-shaped cover plate 111 is movably installed on the outer surface of the upper end of the snap plate 110. The shoe-shaped cover plate 111 is a known technology and will not be elaborated here. A bottom limit block 112 is fixedly installed on the left side of the bottom water valve notch box 1. The right outer wall of the bottom limit block 112 fits tightly with the left outer wall of the connection fixed column 18. A middle water valve notch box 2 is fixedly installed at the upper end of the bottom water valve notch box 1. The middle water valve notch box 2 is a rectangular block with a hollow interior. The cross-sectional area of the middle water valve notch box 2 is the same as that of the bottom water valve notch box 1. A middle water storage tank 21 is arranged inside the middle water valve notch box 2. A middle water outlet 22 is provided on the rear outer wall surface of the middle water valve notch box 2. The middle water outlet 22 penetrates through the outer wall of the middle water valve notch box 2 and extends to the inside of the middle water valve notch box 2. A middle water outlet pipe 23 is fixedly installed at the rear of the middle water outlet 22. The middle water outlet pipe 23 is a circular column. A middle limit block 24 is fixedly installed on the front side of the middle water valve notch box 2. An upper water valve notch box 3 is fixedly installed on the upper side of the middle water valve notch box 2. The shape and size of the upper water valve notch box 3 are the same as those of the middle water valve notch box 2. An upper water outlet 31 is provided on the rear outer wall of the upper water valve notch box 3. The upper water outlet 31 is a rectangular hole. A movable valve core 32 is movably installed on the inner wall of the upper water outlet 31. The outer wall of the movable valve core 32 fits with the inner wall of the upper water outlet 31. A movable connection column 33 is movably installed at the lower end of the movable valve core 32. The movable connection column 33 is a circular column. A notch bottom plate 34 is movably installed at the lower end of the movable valve core 32. An upper water outlet pipe 35 is fixedly installed on the rear outer wall surface of the upper water valve notch box 3.The shape and size of the upper water outlet pipe 35 are the same as those of the middle water outlet pipe 23. The upper water valve notch box 3 is internally hollow and provided with an upper water storage tank 36. The shape and size of the upper water storage tank 36 are the same as those of the middle water storage tank 21. The front end of the upper water valve notch box 3 is fixedly installed with an upper limit block 37. The shape and size of the upper limit block 37 are the same as those of the middle limit block 24. The upper end of the upper water valve notch box 3 is fixedly installed with a movable switch device 4. The movable switch device 4 is a circular columnar shape with a hollow interior. The hollow area of the movable switch device 4 penetrates through the outer surface of the upper end of the upper water valve notch box 3 and extends into the interior of the upper water valve notch box 3. The outer surface of the movable switch device 4 is provided with a fixed card slot 41. The movable switch device 41 is a circular ring groove. The interior of the movable switch device 4 is provided with a threaded hole 42. The interior of the threaded hole 42 is provided with internal threads. The upper end of the fixed card slot 41 is movably installed with an external handle 45. The lower end of the external handle 45 is fixedly installed with a threaded column 44. The outer circumference of the threaded column 44 is provided with external threads. The external threads on the outer circumference of the threaded column 44 are fitted with the internal threads of the threaded hole 42. The upper end of the movable column 43 is fixedly installed with an external handle 45.,

[0030] The principle of the present invention is that the liquid enters the bottom water valve slot box 1 through the water inlet pipe 12, and the valve core 19 inside the bottom water valve slot box 1 is pushed by the pressure of the water flow to move backward on the crawler cover 111. When the valve core 19 moves away from the upper middle limit block 24, the water flows into the middle water storage tank 21 through the gap between the middle limit block 24 and the valve core 19, and the water flows out to the middle water outlet 22 opened on the rear wall of the middle water storage tank 21. The pressure is released in the middle water outlet pipe 3. When the water flow pushes the baffle plate to exceed the middle water valve slot box 2 of the bottom limit block 11, the water flow will flow out through the gap between the middle water valve slot box 2 and the valve core 19 of the bottom limit block 11. At this time, the pressure can be released through the bottom water outlet 13. When the pressure of the water flow is less than the tension of the spring, the valve core 19 moves forward under the tension of the rebound force of the safety spring 17. When the valve core 19 fits with the middle limit block 24, the water flow cannot enter. When the water pressure is too high, the water will flow through the middle water tank 21 and into the upper water tank 36. When the water pressure is too high, the water will knock down the movable valve core 32 inside the upper water outlet 31, and the water will be depressurized through the upper water outlet pipe 35. At this time, the water will be depressurized through the bottom water outlet pipe 14, the middle water outlet pipe 3, and the upper water outlet pipe 35 at the same time, which reduces the pressure of a single pressure relief pipe. The pressure of pressure is increased. When the device is used for a long time, a lot of water stains and dirt will be generated inside. At this time, the water source gate is closed to cut off the water flow. The movable column 43 is separated from the fixed slot 41 by rotating the external handle 45 counterclockwise, and the cleaning supplies are introduced into the device through the threaded hole 42 for cleaning. When the cleaning is completed, the threaded column 44 on the movable column 43 is threadedly connected with the threaded hole 42 on the fixed slot 41, so that the movable column 43 is movably installed on the fixed slot 41.

[0031] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. An intermittent automatic pressure relief valve, comprising a bottom water valve notch box (1), characterized in that: The bottom water valve slot box (1) is provided with a mounting slot (15) at the lower end, a fixed mounting column (16) is fixedly mounted on the front end of the mounting slot (15), a safety spring (17) for providing a squeezing force is fixedly mounted on the rear side of the fixed mounting column (16), a connecting fixing column (18) is fixedly mounted on the side of the safety spring (17) away from the fixed mounting column (16), and a valve core (19) that can move forward and backward is fixedly mounted on the upper end of the connecting fixing column (18); A snap plate (110) is movably mounted on the upper end of the mounting groove (15), a crawler cover plate (111) is movably mounted on the upper outer surface of the snap plate (110), a bottom limit block (112) is fixedly mounted on the left side of the bottom water valve slot box (1), and the right outer wall of the bottom limit block (112) is tightly fitted with the left outer wall of the connecting fixing column (18); A middle-layer water valve slot box (2) is fixedly mounted on the upper end of the bottom-layer water valve slot box (1), an upper-layer water valve slot box (3) is fixedly mounted on the upper side of the middle-layer water valve slot box (2), and a movable switch device (4) is fixedly mounted on the upper end of the upper-layer water valve slot box (3); The bottom layer water valve slot box (1) is provided with a water inlet hole (11), the water inlet hole (11) penetrates the front outer wall of the bottom layer water valve slot box (1) and extends to the interior of the bottom layer water valve slot box (1), and a water inlet pipe (12) is fixedly installed on one side of the water inlet hole (11) away from the interior of the bottom layer water valve slot box (1); A bottom water outlet (13) is provided on the rear outer wall of the bottom water valve slot box (1), the shape and size of the bottom water outlet (13) being the same as the shape and size of the water inlet hole (11), and a bottom water outlet pipe (14) is fixedly installed on the side of the bottom water outlet (13) away from the inside of the bottom water valve slot box (1), and the shape and size of the bottom water outlet pipe (14) being the same as the shape and size of the water inlet pipe (12); A middle-layer water storage tank (21) is arranged inside the middle-layer water valve slot box (2); a middle-layer water outlet (22) is opened on the rear outer wall surface of the middle-layer water valve slot box (2); the middle-layer water outlet (22) penetrates the outer wall of the middle-layer water valve slot box (2) and extends to the inside of the middle-layer water valve slot box (2); a middle-layer water outlet pipe (23) is fixedly installed on the rear side of the middle-layer water outlet (22); and a middle-layer limit block (24) is fixedly installed on the front side of the middle-layer water valve slot box (2); An upper water outlet (31) is provided on the rear outer wall of the upper water valve slot box (3); a movable valve core (32) is movably mounted on the inner wall of the upper water outlet (31); a movable connecting column (33) is movably mounted on the lower end of the movable valve core (32); a slot bottom plate (34) is movably mounted on the lower end of the movable valve core (32); an upper water outlet pipe (35) is fixedly mounted on the rear outer wall of the upper water valve slot box (3); an upper water storage tank (36) is provided in the hollow interior of the upper water valve slot box (3); the shape and size of the upper water storage tank (36) are the same as those of the middle water storage tank (21); and an upper limit block (37) is fixedly mounted on the front end of the upper water valve slot box (3).

2. The intermittent automatic pressure relief valve according to claim 1, wherein: The outer wall of the movable valve core (32) fits with the inner wall of the upper water outlet (31). The shape and size of the upper water outlet pipe (35) are the same as those of the middle water outlet pipe (23). The shape and size of the upper limit block (37) are the same as those of the middle limit block (24).

3. The intermittent automatic pressure relief valve according to claim 1, characterized in that: The hollow area of the movable switch device (4) penetrates through the outer surface of the upper water valve notch box (3) and extends to the inside of the upper water valve notch box (3).

4. The intermittent automatic pressure relief valve according to claim 1, wherein: A fixed card slot (41) is arranged on the outer surface of the movable switch device (4). A threaded hole (42) is opened inside the movable switch device (4). An internal thread is arranged inside the threaded hole (42). An external handle (45) is movably installed at the upper end of the fixed card slot (41). A threaded column (44) is fixedly installed at the lower end of the external handle (45). An external thread is arranged on the outer circle of the threaded column (44). The external thread on the outer circle of the threaded column (44) fits with the internal thread in the threaded hole (42). The upper end of the movable column (43) is fixedly installed with the external handle (45).

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