Self-operated pressure relief and stabilization valve

Abstract

The invention belongs to the related technical field of valves, and particularly discloses a self-operated pressure relief and stabilization valve which comprises a valve body, a leading-in pipe and an output pipe are installed on the two sides of the interior of the valve body in a communicating mode respectively, a frame supporting assembly is arranged on the upper portion of the interior of the valve body, and a pressure stabilization control piece is arranged in the middle of the interior of the valve body. A buffer cavity is formed in the position, close to the connecting position of the leading-in pipe and the output pipe, in the valve body, and a sealing ring is clamped to the upper portion in the valve body, a spring type structure is adopted for pressure stabilization, the spring is maintained in the daily process, and the stability of the spring is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to valves, and specifically discloses a self-acting pressure relief and pressure stabilizing valve. Background Art

[0002] A valve is a control component in a fluid conveying system, having functions such as cutoff, regulation, diversion, prevention of backflow, pressure stabilization, shunt or overflow pressure relief, etc. Valves used in fluid control systems range from the simplest stop valve to various valves used in extremely complex automatic control systems, and their varieties and specifications are quite numerous. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. A pressure regulating valve is one type of valve.

[0003] Chinese Utility Model Patent CN212745208U discloses a self-acting pressure regulating valve, which includes a valve body. The right side surface of the valve body is fixedly communicated with an output pipe. The upper surface of the valve body is fixedly connected with two groups of symmetrically arranged fixing rods. The top ends of each fixing rod are jointly fixedly connected with a pressure regulating chamber. The upper surface of the pressure regulating chamber is fixedly communicated with a pressure guiding pipe. One end of the pressure guiding pipe away from the pressure regulating chamber is fixedly communicated with the outer surface of the output pipe. The upper surface of the valve body is fixedly communicated with a corrugated pipe. A valve rod is sleeved inside the corrugated pipe. The top end of the valve rod is fixedly connected with a movable rod. A return spring is sleeved on the outer surface of the corrugated pipe. A sliding hole is opened at the bottom surface of the pressure regulating chamber. The top end of the movable rod penetrates through the sliding hole and extends into the interior of the pressure regulating chamber. In this self-acting pressure regulating valve, by arranging a filter screen inside the filter box, the input substances can be filtered to prevent impurities from entering the valve body. By arranging a sealing cover on the top of the filter box, the filter screen can be replaced and cleaned; Although the above-mentioned valve achieves the sealing of impurities, the spring, as an important structure for pressure stabilization, is exposed to the outside for a long time. The spring is prone to rust due to humidity, rain, salt spray, industrial pollution, etc., resulting in a decrease in elasticity or even breakage, and then causing an important component in the pressure stabilizing structure to become unusable. Therefore, we need to improve it. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the background art, and a self-acting pressure relief and pressure stabilizing valve is proposed, which includes a valve body. An inlet pipe and an output pipe are respectively communicated and installed on both sides inside the valve body. A support assembly is arranged above the inside of the valve body. A pressure stabilizing control member is arranged in the middle inside the valve body. A buffer cavity is arranged inside the valve body and near the connection of the inlet pipe and the output pipe. A sealing ring is clamped above the inside of the valve body.

[0005] Preferably, the support assembly includes two fixed covers and multiple support rods. The two fixed covers are fixedly connected by multiple support rods. The lower fixed cover is connected to the upper end of the valve body. A buffer tank is fixedly installed above the upper fixed cover. A clamping ring is fixedly arranged on the upper surface of the lower fixed cover. Two groups of arc-shaped rings are respectively connected to both sides inside the clamping ring through sliding clamping members arranged therein.

[0006] Preferably, the pressure stabilizing control member includes a valve stem slidably installed in sequence inside the valve body, the two fixed covers and the buffer tank. A plugging head is fixedly arranged at the lower end of the valve stem. The plugging head is in sliding fit with the sealing ring. A pressure stabilizing spring is sleeved outside the valve stem and between the two fixed covers.

[0007] Preferably, the sliding clamping member includes a sliding seat slidably installed inside the clamping ring. Ball bearings are clamped on the inner surface of the sliding seat. The ball bearings are in rolling fit with the outer surface of the clamping ring. Clamping rods are fixedly arranged on both sides of the upper surface of the sliding seat. Connecting bars are rotatably installed outside the two clamping rods. Plug pins are inserted through the ends of the two groups of connecting bars away from the clamping rods. Positioning seats are installed on the upper surfaces of the corresponding arc-shaped rings. The plug pins are in threaded connection with the positioning seats.

[0008] Preferably, support blocks are installed on the inner walls of the two groups of arc-shaped rings. A sliding groove is formed inside the support block. A pushing member is arranged inside the sliding groove.

[0009] Preferably, the pushing member includes a slider slidably installed inside the sliding groove. A liquid storage pipe is vertically connected to the upper surface of the slider. Communication pipes are installed at equal intervals along the vertical direction inside the liquid storage pipe. Cotton pads are sleeved outside the ends of the multiple communication pipes away from the liquid storage pipe. A pressurizing member is arranged above the inside of the liquid storage pipe.

[0010] Preferably, the pressurizing member includes a liquid inlet pipe communicated and installed above the inside of the liquid storage pipe. One end of the liquid inlet pipe is communicated and installed with a connecting pipe. An air bag is communicated and installed at the end of the connecting pipe away from the liquid inlet pipe.

[0011] Preferably, multiple groups of abutting holes are formed on both sides of the upper surface of the support block. Abutting pins are inserted through the upper abutting holes corresponding to the slider. The lower end surface of the abutting pin abuts against the upper surface of the slider.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. By arranging a sealing ring inside the valve body, when the valve stem rises under pressure, the plugging head will be in sliding fit with the sealing ring. The sealing ring is made of wear-resistant fluororubber, which scrapes impurities on the surface of the plugging head during the reciprocating movement of the valve stem, avoiding particle jamming and enabling the plugging head to always be in sealing fit with the inner wall of the buffer chamber.

[0013] 2. Through the provided voltage stabilizing control component, when the water pressure is too high, the pressure inside the inlet pipe can be enhanced, and then the plugging head and the valve stem are pushed upward. The voltage stabilizing spring controls the movement of the plugging head outside the valve stem, making the water pressure inside the valve body relatively balanced and enabling the voltage stabilizing spring to achieve automatic pressure relief.

[0014] 3. Through the provided sliding and clamping component, two sets of detachable arc-shaped rings can be quickly installed above the clamping ring. After fixation, by pushing the sliding seat to rotate outside the clamping ring, the support blocks, liquid storage pipes, cotton pads, and sliders on the inner wall of the arc-shaped ring rotate accordingly. When the slider moves to the outside of the voltage stabilizing spring, the cotton pad contacts the surface of the voltage stabilizing spring, and the cotton pad can evenly guide the lubricating liquid into multiple communicating pipes through the pressurizing component. Thus, each cotton pad can be coated with the lubricating liquid, and when rotating and contacting the voltage stabilizing spring, it can coat and maintain the voltage stabilizing spring, improving the service life of the voltage stabilizing spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall connection structure of the present invention from another angle; Figure 3 is a schematic diagram of the inner part connection structure of the valve body of the present invention; Figure 4 is a schematic diagram of the partial structure of the voltage stabilizing control component of the present invention; Figure 5 is a schematic diagram of the connection structure between the liquid storage pipe and the support block of the present invention; Figure 6 is a schematic diagram of the connection structure between the clamping ring, the arc-shaped ring, and the sliding and clamping component of the present invention; Figure 7 is of the present invention Figure 2 schematic diagram of the structure at A in

[0016] In the figure: 1. Valve body; 2. Fixed cover; 3. Voltage stabilizing spring; 4. Clamping ring; 5. Support rod; 6. Inlet pipe; 7. Output pipe; 8. Sliding seat; 9. Plugging head; 10. Valve stem; 11. Buffer cavity; 12. Sealing ring; 13. Liquid storage pipe; 14. Cotton pad; 15. Communicating pipe; 16. Chute; 17. Support block; 18. Slider; 19. Offset; 20. Counter bore; 21. Arc-shaped ring; 22. Screw pin; 23. Ball; 24. Connecting bar; 25. Clamping rod; 26. Liquid inlet pipe; 27. Airbag; 28. Connecting pipe; 29. Buffer tank; 30. Positioning seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited to the limitations of the specific embodiments disclosed below.

[0019] As Figures 1 - 7 shown, a self-acting pressure relief and pressure stabilizing valve includes a valve body 1. On both sides inside the valve body 1, an inlet pipe 6 and an outlet pipe 7 are respectively connected and installed in communication. Above the inside of the valve body 1, a support assembly is provided. In the middle of the inside of the valve body 1, a pressure stabilizing control member is provided. Inside the valve body 1 and near the connection of the inlet pipe 6 and the outlet pipe 7, a buffer chamber 11 is provided. Above the inside of the valve body 1, a sealing ring 12 is clamped and installed.

[0020] The support assembly includes two fixed covers 2 and multiple support rods 5. The two fixed covers 2 are fixedly connected by the multiple support rods 5. The fixed cover 2 located below is connected to the upper end of the valve body 1. Above the fixed cover 2 located above, a buffer tank 29 is fixedly installed. On the upper surface of the fixed cover 2 located below, a snap ring 4 is fixedly provided. On both sides inside the snap ring 4, two groups of arc-shaped rings 21 are respectively connected through sliding and clamping members provided. The two fixed covers 2 are connected between the buffer tank 29 and the snap ring 4 by the multiple support rods 5, and can support to create a buffer and pressure stabilizing space for the pressure stabilizing control member.

[0021] The pressure stabilizing control member includes a valve stem 10 that is slidably installed in sequence inside the valve body 1, the two fixed covers 2, and the buffer tank 29. At the lower end of the valve stem 10, a plugging head 9 is fixedly provided. The plugging head 9 is in sliding fit with the sealing ring 12. Outside the valve stem 10 and between the two fixed covers 2, a pressure stabilizing spring 3 is sleeved. The flowing medium enters through the inlet pipe 6 and then flows inside the buffer chamber 11. When the medium pressure increases, it will promote the upward movement of the plugging head 9. At this time, the main structure of the valve stem 10 will squeeze the external pressure stabilizing spring 3, and the pressure stabilizing spring 3 will deform according to the pressure, so as to achieve the purpose of pressure stabilization.

[0022] The sliding and clamping member includes a sliding seat 8 slidably installed inside the snap ring 4. Inside the inner surface of the sliding seat 8, a ball 23 is clamped. The ball 23 is in rolling fit with the outer surface of the snap ring 4. On both sides of the upper surface of the sliding seat 8, clamping rods 25 are fixedly provided. On the outside of the two clamping rods 25, connecting bars 24 are rotatably installed. At the ends of the two groups of connecting bars 24 away from the clamping rods 25, pin bolts 22 are inserted. On the upper surface of the corresponding arc-shaped rings 21, positioning seats 30 are installed. The pin bolts 22 are in threaded connection with the positioning seats 30. The corresponding arc-shaped rings 21 are attached to the upper surface of the snap ring 4. The two groups of arc-shaped rings 21 are clamped and spliced into an integral annular structure. Then the connecting bar 24 is rotated to the positioning seat 30, and then the pin bolt 22 is rotated above the positioning seat 30, and the pin bolt 22 is screwed into the positioning seat 30. At this time, the arc-shaped ring 21 can be connected to the sliding seat 8. Through the provided sliding seat 8 and ball 23, it can rotate inside the snap ring 4, and then drive the external snap rod 25 and connecting bar 24 to rotate together. Thus, the snap rod 25 and positioning seat 30 can drive the arc-shaped ring 21 to rotate.

[0023] Support blocks 17 are installed on the inner walls of both groups of arc-shaped rings 21. A chute 16 is formed inside the support block 17, and a pushing member is arranged inside the chute 16. The support block 17 facilitates supporting the sliding of the pushing member inside the arc-shaped ring 21.

[0024] The pushing member includes a slider 18 slidably installed inside the chute 16. A liquid storage tube 13 is vertically connected to the upper surface of the slider 18. A plurality of communicating tubes 15 are installed at equal intervals along the vertical direction inside the liquid storage tube 13. Cotton pads 14 are sleeved outside one ends of the plurality of communicating tubes 15 away from the liquid storage tube 13. The cotton pads 14 are arranged in a rectangular shape, and arc-shaped grooves are symmetrically arranged in the middle of the upper and lower ends. A pressurizing member is arranged above the inside of the liquid storage tube 13. Through the provided slider 18 and chute 16, when the voltage stabilizing spring 3 is in normal use, the slider 18 should move away from the voltage stabilizing spring 3 to ensure that the voltage stabilizing spring 3 has sufficient space for extrusion deformation. By setting the cotton pads 14 in this shape, it can be made to fit the gap of the voltage stabilizing spring 3 to ensure the coating area.

[0025] The cotton pads 14 are made of ultra-fine fibers and silicone oil-impregnated cotton, with strong adsorption and slow-release lubricant, which can wrap the liquid medium and is not easy to overflow.

[0026] The pressurizing member includes a liquid inlet tube 26 connected and installed above the inside of the liquid storage tube 13. One end of the liquid inlet tube 26 is connected and installed with a connecting tube 28. One end of the connecting tube 28 away from the liquid inlet tube 26 is connected and installed with an airbag 27. By arranging the airbag 27 at the liquid inlet tube 26, when the anti-corrosion liquid enters the inside of the liquid storage tube 13, repeatedly squeezing the airbag 27 can push the liquid to flow quickly and ensure that the liquid can quickly enter the inside of the cotton pads 14 in this case.

[0027] A plurality of groups of abutting holes 20 are formed on both sides of the upper surface of the support block 17. Abutting pins 19 are inserted into the corresponding abutting holes 20 above the slider 18. The lower end surface of the abutting pin 19 abuts against the upper surface of the slider 18. By inserting the abutting pins 19 at the abutting holes 20, when maintaining the voltage stabilizing spring 3, the pushed slider 18 can be positioned, thus ensuring the stability of the later rotation coating.

[0028] Working principle: When in use, when the medium enters the interior of the valve body 1 through the inlet pipe 6 and flows into the buffer chamber 11, when the medium pressure exceeds the set value, the pressure acts on the voltage stabilizing control member, pushing it upward. The voltage stabilizing spring 3 is compressed to generate a reaction force to balance the medium pressure until a dynamic equilibrium state is reached. When overpressure occurs, the plug 9 continuously moves upward, and the medium is discharged through the outlet pipe 7. After the pressure returns, the voltage stabilizing spring 3 rebounds, pushing the valve stem 10 downward, and the plug 9 reseals the buffer chamber 11 to stop the pressure relief; When performing maintenance on the voltage stabilizing spring 3, first fit the corresponding arc-shaped ring 21 to the upper surface of the snap ring 4. The two arc-shaped rings 21 are clamped and spliced into an integral annular structure. Then rotate the connecting bar 24 to the positioning seat 30, and then rotate the pin 22 above the positioning seat 30 and screw the pin 22 into the positioning seat 30; After fixing the arc-shaped ring 21, when the valve body 1 is in use, by pushing the slider 18 to move to one side of the voltage stabilizing spring 3, and then inserting the corresponding offset 19 into the offset hole 20 above the current slider 18, the offset 19 limits the current slider 18. One end of the cotton pad 14 penetrates into the inner side of the voltage stabilizing spring 3 through the gap of the voltage stabilizing spring 3. The concave arc groove will deform during contact, and the groove will fit with the voltage stabilizing spring 3. At the same time, under the extrusion of the voltage stabilizing spring 3, the cotton pad 14 will deform to wrap around the inner and outer surfaces of the voltage stabilizing spring 3. Driving the slide seat 8 to rotate outside the snap ring 4 can make the cotton pad 14 evenly coat the anti-corrosion liquid on the outer surface of the voltage stabilizing spring 3. To ensure that each cotton pad 14 can evenly introduce the anti-corrosion liquid, after adding the anti-corrosion liquid, by repeatedly squeezing the airbag 27, the liquid pressure inside the liquid storage pipe 13 is increased. Under the action of the air pressure, the liquid medium evenly flows into the liquid storage pipe 13 through each communicating pipe 15, which can eliminate the problem that the cotton pad 14 cannot fully introduce the liquid during conventional liquid inlet.

[0029] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A self-operated pressure relief and stabilizing valve, comprising a valve body (1), characterized in that: The two sides of the valve body (1) are connected to each other and are respectively provided with an inlet pipe (6) and an outlet pipe (7); a support assembly is provided at the top of the valve body (1); a pressure stabilizing control component is provided in the middle of the valve body (1); a buffer chamber (11) is provided inside the valve body (1) and near the connection between the inlet pipe (6) and the outlet pipe (7); and a sealing ring (12) is clamped at the top of the valve body (1).

2. A self-operated pressure relief and stabilizing valve according to claim 1, characterized in that: The support assembly comprises two fixed covers (2) and a plurality of support rods (5), the two fixed covers (2) being fixedly connected via the plurality of support rods (5), the fixed cover (2) located at the bottom being connected to the upper end of the valve body (1), a buffer tank (29) being fixedly mounted above the fixed cover (2) located at the top, a clamping ring (4) being fixedly arranged on the upper surface of the fixed cover (2) located at the bottom, and two sets of arc rings (21) being respectively connected to the two sides of the inside of the clamping ring (4) via sliding clamping parts.

3. A self-operated pressure relief and stabilizing valve according to claim 1, characterized in that: The pressure stabilizing control component comprises a valve stem (10) which is slidably mounted in sequence inside a valve body (1), two fixed covers (2) and a buffer tank (29); a plugging head (9) is fixedly mounted on the lower end of the valve stem (10); the plugging head (9) is slidably fitted with a sealing ring (12); and a pressure stabilizing spring (3) is sleeved on the outside of the valve stem (10) and located between the two fixed covers (2).

4. A self-operated pressure relief and stabilizing valve according to claim 2, characterized in that: The sliding clamping component comprises a sliding seat (8) slidably mounted inside the clamping ring (4), a ball (23) being clamped on the inner surface of the sliding seat (8), the ball (23) rollingly fitting with the outer surface of the clamping ring (4), clamping rods (25) being fixedly arranged on both sides of the upper surface of the sliding seat (8), connecting strips (24) being rotatably mounted on the outside of the two clamping rods (25), screw pins (22) being inserted into the ends of the two groups of connecting strips (24) away from the clamping rods (25), and positioning seats (30) being installed on the corresponding upper surfaces of the arc ring (21), the screw pins (22) being threadedly connected to the positioning seats (30).

5. A self-operated pressure relief and stabilizing valve according to claim 4, characterized in that: The inner walls of the two groups of arc-shaped rings (21) are both provided with support blocks (17), a slide groove (16) is provided inside the support block (17), and a push piece is provided inside the slide groove (16).

6. A self-operated pressure relief and stabilizing valve according to claim 5, characterized in that: The push member comprises a slider (18) slidably mounted inside a slide groove (16); the upper surface of the slider (18) is vertically connected to a liquid storage tube (13); connecting tubes (15) are vertically mounted at equal distances inside the liquid storage tube (13); a plurality of connecting tubes (15) are each provided with a cotton pad (14) on the outside of one end away from the liquid storage tube (13); and a pressure member is arranged above the inside of the liquid storage tube (13).

7. A self-operated pressure relief and stabilizing valve according to claim 6, characterized in that: The pressurizing member comprises a liquid inlet pipe (26) installed in communication with the interior of the liquid storage pipe (13), one end of the liquid inlet pipe (26) being installed in communication with a connecting pipe (28), and one end of the connecting pipe (28) being installed in communication with an air bag (27) away from the liquid inlet pipe (26).

8. The self-operated pressure relief and stabilizing valve according to claim 6, characterized in that: A plurality of groups of abutment holes (20) are provided on both sides of the upper surface of the support block (17), and an abutment pin (19) is inserted into the upper abutment hole (20) corresponding to the slide block (18), and the lower end surface of the abutment pin (19) abuts against the upper surface of the slide block (18).

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