Diaphragm type pressure release valve

Abstract

The invention discloses a diaphragm type pressure release valve, which relates to the technical field of pressure release valves, and comprises a filter, a flange plate and a pressure release valve main body, and one side of the pressure release valve main body is connected with the filter through the flange plate. The guide vanes are arranged in the filter, the filter element is driven to rotate by kinetic energy of flowing of a liquid or gas medium, an external motor or energy source is not needed, the guide vanes are designed to have a 30-degree incident flow angle to improve torque, and impurities attached to the surface of the filter element are thrown to the inner wall of the filter through centrifugal force generated by rotation, so that the filter element is prevented from falling off. Furthermore, in the rotating process of the first rotating shaft, the second rotating shaft and the auxiliary blades are driven to rotate in a linkage manner through the meshing effect of an external first gear and a second gear, namely, the centrifugal force generated by rotation enables particles in the liquid or gas medium to move towards the outer wall of the filter; therefore, the permeability of the filter element can be maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure relief valves, in particular to a diaphragm type pressure relief valve. BACKGROUND

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a desired outlet pressure by adjusting and relies on the energy of the liquid or gas medium itself to automatically maintain the outlet pressure stable. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and kinetic energy of the fluid change, resulting in different pressure losses, thereby achieving the purpose of pressure reduction. Then rely on the adjustment of the control and regulation system to balance the spring force and the fluctuation of the pressure after the valve, so that the pressure after the valve remains constant within a certain error range.

[0003] Chinese patent authorization announcement number CN 118998331 A discloses a valve structure with filtering function, relating to the technical field of valves. By reasonably dividing the valve area, filter area and check area in the valve body shell, and configuring the openable and closable valve core, filter plate and openable and closable check assembly in the valve area, filter area and check area respectively, a valve structure with openable and closable valve core and openable and closable check assembly on both sides of the filter plate with filtering function is formed. Based on this, when the filter plate needs to be disassembled and cleaned, the water pressure on both sides of the filter plate is eliminated by closing the valve core and blocking the check assembly, which facilitates personnel to disassemble and clean the filter plate at any time. Compared with the prior art, the disassembly conditions of the filter assembly are relaxed, and safety hazards caused by high-pressure water flow during disassembly of the filter plate can be avoided. The valve structure with filtering function of the present application is suitable for long-distance pipeline transportation. The above-mentioned prior art scheme has the following disadvantages: the technical scheme uses fluid liquid or gas medium flow as power to drive the cleaning mechanism to automatically clean the filter plate. It is convenient to use, but in the operation process, if the flow increases, it will automatically accelerate rotation, so that the friction between the parts is maintained, that is, the filter plate and the cleaning parts will be seriously worn out in long-term use, and the subsequent replacement is tedious, which has certain optimization space.

[0004] CN 117948450 A discloses a pressure relief valve. Including a cylindrical shell and a piston plate, a spring, a brush head arranged inside the shell; the edge of the piston plate is in sliding connection with the inner wall of the shell and keeps close fit, the piston plate separates the inside of the shell into upper space and lower space along the axial direction, the spring is located in the upper space, one end of the spring is fixedly connected with the shell, the other end of the spring is fixedly connected with the piston plate, the brush head is located in the lower space, the brush head is fixedly connected with the piston plate, there is a gap between the edge of the brush head and the inner wall of the shell, the edge of the brush head is fixedly connected with bristles, the bristles are in contact with or pressed tightly with the inner wall of the shell, the bottom center of the lower space is provided with a pressure relief channel, the sidewall of the upper space is provided with a pressure relief port, the pressure relief port is in strip shape and is arranged along the axial direction of the shell. It can automatically adjust the pressure relief speed according to the pressure change state, and help to remove dirt and scale. The above-mentioned prior art scheme has the following disadvantages: the above-mentioned technical scheme adopts a traditional spring structure for adjustment during use, but the spring force change under long-time use will cause the pressure output pressure change, which has certain optimization space. SUMMARY

[0005] The purpose of the present application is to provide a diaphragm type pressure relief valve to solve the problem of cleaning in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a diaphragm type pressure relief valve, comprising a filter, a flange plate and a pressure relief valve body, one side of the pressure relief valve body is connected with the filter through the flange plate;

[0007] The inside of the filter is provided with a self-cleaning filtering mechanism, the self-cleaning filtering mechanism comprises a first rotating shaft, and the first rotating shaft is rotatably connected to the top end inside the filter, a first gear is fixedly connected to the top end of the first rotating shaft outside the top end of the filter, guide vanes are uniformly fixed on the outside of the first rotating shaft, a filter element is fixed to the bottom end of the first rotating shaft, second rotating shafts are uniformly connected inside the filter, auxiliary vanes are uniformly fixed on the outside of the second rotating shafts, second gears are fixedly connected to the top end of the second rotating shafts outside the top end of the filter, and the second gears and the first gears are meshingly connected, a water outlet pipe is fixedly connected to the bottom end inside the filter, a baffle is fixed to the top end of the water outlet pipe, the baffle is located at the bottom end inside the filter element, the inside of the water outlet pipe is in communication with the inside of the filter element, the inside of the water outlet pipe is in communication with the inside of the flange plate, a material guide slope is arranged at the bottom end inside the filter, discharge pipes are fixedly connected to the two sides of the filter, control valves are fixedly connected to the outside of the discharge pipes, and a diaphragm body is connected to the inside of the pressure relief valve body.

[0008] Further, rotating blocks are fixedly connected to the two sides of the filter element, a rotating groove is arranged at the top end inside the filter, and the rotating groove is connected with the rotating blocks.

[0009] Further, the width of the rotating groove is matched with the width of the rotating block, and the cross sections of the rotating groove and the rotating block are provided in a convex shape.

[0010] Further, the guide vanes are provided in an inclined shape, the inclination angle of the guide vanes is 30°, and the material of the guide vanes is stainless steel.

[0011] Further, the second gear is provided with three groups, and the second gears are arranged in a triangular shape outside the first gear.

[0012] Further, the top end of the pressure relief valve body is fixed with a valve cover, the outside of the pressure relief valve body is fixed with a control box, and the inside of the pressure relief valve body is filled with high-pressure gas.

[0013] Further, the valve cover and the pressure relief valve body are connected by welding, and the high-pressure gas is nitrogen.

[0014] Further, the inside of the valve cover is provided with a threaded groove, and the inside of the threaded groove is threadedly connected with a threaded rod, the bottom end of the threaded rod is connected with a piston, the top end of the piston is fixed with a folding sealing cover, and the top end of the folding sealing cover is connected with the bottom end of the valve cover.

[0015] Further, the inside of the control box is fixed with a single-chip microcomputer, a wireless transmission module and an alarm, and one side of the inside of the pressure relief valve body is fixed with a pressure sensor.

[0016] Further, the output end of the pressure sensor is electrically connected with the input end of the single-chip microcomputer through a wire, and the output end of the single-chip microcomputer is electrically connected with the input end of the wireless transmission module and the alarm through a wire, respectively.

[0017] Compared with the prior art, the diaphragm type pressure relief valve has the beneficial effects that: the diaphragm type pressure relief valve is provided with a self-cleaning filter mechanism, can drive the filter core to rotate by using the kinetic energy of the flowing liquid or gas medium, does not need an external motor or energy source, realizes the self-cleaning purpose, can replace the spring force in the prior art by the gas pressure, and eliminates the problem that the spring elastic force change in the prior art leads to the change of the pressure relief output pressure.

[0018] The flow guide vane is arranged in the interior of the filter, which drives the filter core to rotate by using kinetic energy of the entering liquid or gas medium flow, without external motor or energy source, and the flow guide vane is designed with 30° angle of attack to improve the torque, the centrifugal force generated by rotation throws the impurities adhered to the surface of the filter core to the inner wall of the filter, and the impurities cannot be stably adhered under the action of rotation, the pores are kept unobstructed, further, in the process of rotation of the first rotating shaft, the first gear and the second gear are engaged, the second rotating shaft and the auxiliary vane are driven to rotate, that is, the centrifugal force generated by rotation moves the particles in the liquid or gas medium to the outer wall of the filter, to assist in keeping the permeability of the filter core, under the filtering effect, the liquid or gas medium is ensured to be clean, the opening and closing pressure value of the pressure relief valve body is accurate, and the protection effect on the interior of the pressure relief valve body is improved, and the service life is prolonged;

[0019] A sealed chamber is designed at the top of the pressure relief valve body, high-pressure gas is filled in the interior, the spring force in the prior art is replaced by the gas pressure, the problem that the pressure reduction output pressure changes due to the spring force change in the prior art is eliminated, then the pressure relief valve body and the valve cover are sealed by welding, further, the threaded rod is rotated, and the volume of the gas cavity is compressed under the threaded connection with the threaded groove, the gas pressure is changed, that is, the pressure reduction effect can be changed by flexibly changing the pressure of the high-pressure gas, and the gas cavity pressure is monitored in real time through the pressure sensor during use. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a front view of the sectional structure of the present application;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the filter of the present application;

[0023] Figure 3 It is a three-dimensional structure schematic diagram of the interior of the filter of the present application;

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the flow guide vane of the present application;

[0025] Figure 5 It is a three-dimensional structure schematic diagram of the filter core of the present application;

[0026] Figure 6 It is a front view of the sectional structure of the interior of the pressure relief valve body of the present application;

[0027] Figure 7 It is a three-dimensional structure schematic diagram of the folding sealing cover of the present application.

[0028] Figure 8 It is a circuit relationship schematic diagram of the present application.

[0029] The reference signs in the drawing are explained as follows: 1, filter; 2, self-cleaning filter mechanism; 201, first rotating shaft; 202, guide vane; 203, filter core; 204, second rotating shaft; 205, auxiliary vane; 206, second gear; 207, first gear; 208, baffle; 209, water outlet pipe; 3, rotating groove; 4, rotating block; 5, flange plate; 6, pressure relief valve main body; 7, valve cover; 8, control box; 9, high-pressure gas; 10, diaphragm main body; 11, discharge pipe; 12, control valve; 13, material guide slope; 14, threaded groove; 15, folding sealing cover; 16, piston; 17, pressure sensor; 18, single-chip microcomputer; 19, wireless transmission module; 20, warning device; 21, threaded rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0031] Please refer to Figures 1-8 The present application provides the following technical solutions:

[0032] Embodiment one

[0033] In order to solve the problem of lacking cleaning in the prior art, the following solutions are disclosed, specifically as follows Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5The film pressure relief valve provided by the application shown in the application, including filter 1, flange plate 5 and pressure relief valve body 6, one side of the pressure relief valve body 6 is connected with the filter 1 through the flange plate 5, the inside of the filter 1 is provided with a self-cleaning filtering mechanism 2, the self-cleaning filtering mechanism 2 includes a first rotating shaft 201, and the top end of the first rotating shaft 201 is rotatably connected in the inside of the filter 1, the top end of the first rotating shaft 201 is fixed with a first gear 207 outside the top end of the filter 1, the outside of the first rotating shaft 201 is uniformly fixed with a guide vane 202, the bottom end of the first rotating shaft 201 is fixed with a filter core 203, the inside of the filter 1 is uniformly connected with a second rotating shaft 204, and the outside of the second rotating shaft 204 is uniformly fixed with an auxiliary vane 205, the top end of the second rotating shaft 204 is fixed with a second gear 206 outside the top end of the filter 1, and the second gear 206 and the first gear 207 are meshingly connected, the bottom end of the inside of the filter 1 is fixed with a water outlet pipe 209, and the top end of the water outlet pipe 209 is fixed with a baffle 208, the baffle 208 is at the bottom end inside the filter core 203, the inside of the water outlet pipe 209 and the filter core 203 is connected, the inside of the water outlet pipe 209 and the flange plate 5 is connected, the bottom end of the inside of the filter 1 is provided with a material guide slope 13, the two sides of the filter 1 are fixed with a discharge pipe 11, and the outside of the discharge pipe 11 is fixed with a control valve 12, the inside of the pressure relief valve body 6 is connected with a diaphragm body 10, the two sides of the filter core 203 are fixed with a rotating block 4, the top end of the inside of the filter 1 is provided with a rotating groove 3, and the rotating groove 3 is connected with the rotating block 4, the width of the rotating groove 3 and the width of the rotating block 4 are matched in size, the cross sections of the rotating groove 3 and the rotating block 4 are provided in a convex shape, the guide vanes 202 are provided in an inclined shape, the inclination angle of the guide vanes 202 is 30°, the material of the guide vanes 202 is stainless steel, the second gear 206 is provided with three groups, and the second gear 206 is arranged in a triangular shape outside the first gear 207.

[0034] In the embodiment, when in use, the guide vanes 202 are provided, which drive the filter core 203 to rotate by using the kinetic energy of the flowing liquid or gas medium, without external motor or energy source, and the guide vanes 202 are designed with 30° incident angle to improve the torque, the centrifugal force generated by the rotation throws the impurities attached to the surface of the filter core 203 to the inner wall of the filter 1, and under the action of rotation, the impurities cannot be stably attached, the pores are kept unobstructed, further, in the rotating process of the first rotating shaft 201, the first gear 207 and the second gear 206 are meshed, driving the second rotating shaft 204 and the auxiliary vane 205 to rotate, that is, the centrifugal force generated by the rotation moves the particles in the liquid or gas medium to the outer wall of the filter 1, to assist in maintaining the permeability of the filter core 203, under the filtering action, the liquid or gas medium is ensured to be clean, the opening and closing pressure value of the pressure relief valve body 6 is accurate, and at the same time, the protection effect on the inside of the pressure relief valve body 6 is improved, prolonging the service life.

[0035] Example two

[0036] The embodiment is different from embodiment one, by optimizing the spring structure to eliminate the problem of pressure relief output pressure change caused by spring elastic force change, specifically as shown in Figure 1 、 Figure 6 、 Figure 7 and Figure 8 , the top end of the pressure relief valve body 6 is fixed with the valve cover 7, the outer side of the pressure relief valve body 6 is fixed with the control box 8, the inside of the pressure relief valve body 6 is filled with high pressure gas 9, the valve cover 7 and the pressure relief valve body 6 are connected by welding, the high pressure gas 9 is nitrogen, the inside of the valve cover 7 is provided with a threaded groove 14, and the threaded groove 14 is internally threaded with a threaded rod 21, the bottom end of the threaded rod 21 is connected with a piston 16, the top end of the piston 16 is fixed with a folding sealing cover 15, and the top end of the folding sealing cover 15 is connected with the bottom end of the valve cover 7, the inside of the control box 8 is fixed with a single-chip microcomputer 18, a wireless transmission module 19 and an alarm 20, one side of the inside of the pressure relief valve body 6 is fixed with a pressure sensor 17, the output end of the pressure sensor 17 is electrically connected with the input end of the single-chip microcomputer 18 through wires, and the output end of the single-chip microcomputer 18 is electrically connected with the input end of the wireless transmission module 19 and the alarm 20 through wires respectively.

[0037] In this embodiment, when in use, a sealed chamber is designed at the top of the pressure relief valve body 6, high pressure gas 9 is filled inside, the gas pressure is used to replace the spring force in the prior art, the problem of pressure relief output pressure change caused by spring elastic force change in the prior art is eliminated, then the pressure relief valve body 6 and the valve cover 7 are sealed by welding, the threaded rod 21 is further rotated, and under the action of the threaded connection with the threaded groove 14, the piston 16 can compress the gas cavity volume, the gas pressure is changed, that is, by changing the pressure of the high pressure gas 9 flexibly, the pressure relief effect can be changed, and the gas cavity pressure is monitored in real time by the pressure sensor 17 during use.

[0038] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diaphragm-type pressure relief valve, comprising a filter (1), a flange (5) and a pressure relief valve body (6), wherein the filter (1) is connected to one side of the pressure relief valve body (6) via the flange (5); Its features are: The filter (1) is equipped with a self-cleaning filter mechanism (2). The self-cleaning filter mechanism (2) includes a first rotating shaft (201), which is rotatably connected to the top of the filter (1). A first gear (207) is fixed to the outside of the top of the filter (1) extending from the top of the first rotating shaft (201). Guide vanes (202) are uniformly fixed to the outside of the first rotating shaft (201). A filter element (203) is fixed to the bottom of the first rotating shaft (201). A second rotating shaft (204) is uniformly connected to the inside of the filter (1), and auxiliary vanes (205) are fixed to the outside of the second rotating shaft (204). The top of the second rotating shaft (204) extends to the outside of the top of the filter (1). A second gear (206) is fixed, and the second gear (206) and the first gear (207) are meshed and connected. A water outlet pipe (209) is fixed at the bottom inside the filter (1), and a baffle (208) is fixed at the top of the water outlet pipe (209). The baffle (208) is located at the bottom inside the filter element (203). The water outlet pipe (209) is connected to the inside of the filter element (203). The water outlet pipe (209) is connected to the inside of the flange (5). A guide slope (13) is provided at the bottom inside the filter (1). A discharge pipe (11) is fixed on both sides of the filter (1), and a control valve (12) is fixed on the outside of the discharge pipe (11). A diaphragm body (10) is connected inside the pressure relief valve body (6).

2. The diaphragm-type pressure relief valve according to claim 1, characterized in that: Rotating blocks (4) are fixed on both sides of the filter element (203), and a rotating groove (3) is provided at the top inside the filter (1), and the rotating groove (3) and the rotating block (4) are connected.

3. A diaphragm-type pressure relief valve according to claim 2, characterized in that: The width of the rotating groove (3) matches the width of the rotating block (4), and the cross-sections of both the rotating groove (3) and the rotating block (4) are convex.

4. A diaphragm-type pressure relief valve according to claim 1, characterized in that: The guide vanes (202) are all inclined, the inclination angle of the guide vanes (202) is 30°, and the material of the guide vanes (202) is stainless steel.

5. A diaphragm-type pressure relief valve according to claim 1, characterized in that: The second gear (206) is provided in three sets, and the second gear (206) is arranged in a triangular pattern outside the first gear (207).

6. A diaphragm-type pressure relief valve according to claim 1, characterized in that: A valve cover (7) is fixed to the top of the pressure relief valve body (6), a control box (8) is fixed to the outside of the pressure relief valve body (6), and the interior of the pressure relief valve body (6) is filled with high-pressure gas (9).

7. A diaphragm-type pressure relief valve according to claim 6, characterized in that: The valve cover (7) and the pressure relief valve body (6) are connected by welding, and the high-pressure gas (9) is nitrogen.

8. A diaphragm-type pressure relief valve according to claim 6, characterized in that: The valve cover (7) has a threaded groove (14) inside, and a threaded rod (21) is threaded inside the threaded groove (14). A piston (16) is connected to the bottom end of the threaded rod (21). A folding sealing cover (15) is fixed to the top end of the piston (16), and the top end of the folding sealing cover (15) is connected to the bottom end of the valve cover (7).

9. A diaphragm-type pressure relief valve according to claim 6, characterized in that: The control box (8) is equipped with a microcontroller (18), a wireless transmission module (19) and an alarm (20), and a pressure sensor (17) is fixed on one side of the pressure relief valve body (6).

10. A diaphragm-type pressure relief valve according to claim 9, characterized in that: The output of the pressure sensor (17) is electrically connected to the input of the microcontroller (18) via a wire, and the output of the microcontroller (18) is electrically connected to the input of the wireless transmission module (19) and the alarm (20) via wires respectively.

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