Automatic pressure regulating type valve

Abstract

The utility model belongs to the technical field of valves, and discloses an automatic pressure regulating type valve which comprises a valve body, a balancing device and an extruding device, the top end of the valve body is fixedly connected with the balancing device, a pressure reducing pipeline is arranged in the valve body, the left side of the pressure reducing pipeline is fixedly connected with a water inlet pipe, and the right side of the pressure reducing pipeline is fixedly connected with a water outlet pipe. The top end of the pressure reduction pipeline is fixedly connected with a lengthening pipe, a sliding groove is formed in the top end of the lengthening pipe, a piston is slidably connected into the sliding groove of the lengthening pipe, the piston is sleeved with a first spring, the top end of the first spring abuts against a connecting rod, and a pushing handle is fixedly connected into the connecting rod. The problems that in the process that a motor controls a valve to conduct automatic pressure adjusting, due to liquid circulation thrust, the adjusting position of the valve is loosened and rotates, water flow is likely to be generated to impact a water pipe when the valve is suddenly turned off, the valve and a pipeline are likely to be damaged, and the automatic pressure adjusting effect of the valve is affected are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to an automatic pressure regulating valve. Background Art

[0002] A valve is a control device for a fluid pipeline. It is used to connect or cut off the flow of pipeline media, change the flow of media, change the flow direction of media, adjust the pressure and flow of media, and based on these characteristics, protect the normal operation of pipeline equipment.

[0003] At the same time, the patent with application number 202121222275.1 discloses a valve with automatic pressure regulation function, including a valve body, a circulation channel is provided at the lower part of the valve body, a connecting flange is provided on the side of the circulation channel away from the valve body, a screw is provided at the upper part of the valve body, a fixing block is fixedly connected to the outer surface of the screw, a limiting column is fixedly connected to the upper surface of the valve body, a limiting disk is provided at the upper part of the limiting column, a fixing hole is provided inside the limiting disk, a handwheel is fixedly connected to the upper surface of the screw, a small magnetic block is fixedly connected to the lower surface of the handwheel, and a limiting column is fixedly connected to the lower surface of the handwheel.

[0004] However, in the implementation of relevant technologies, it was found that in the process of using a motor to control the valve for automatic pressure adjustment, the valve adjustment position may become loose or rotate due to the thrust of liquid flow, and sudden shutdown may easily cause water flow to impact the water pipe, which may easily cause damage to the valve and pipeline, thereby affecting the effect of the valve's automatic pressure regulation. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides an automatic pressure-regulating valve, which has the advantage that when the pressure in the pipe is not stable enough during use, liquid enters the valve through the water inlet pipe, driving two springs to be compressed, thereby releasing the pressure inside the valve, so that the pressure of the liquid is more stable after passing through the valve. At the same time, the valve itself is also protected to avoid damage to the valve due to long-term pressure changes.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic pressure-regulating valve, comprising a valve body, a balancing device and an extruding device, the top end of the valve body is fixedly connected to the balancing device, the interior of the valve body comprises a pressure-reducing pipe, the left side of the pressure-reducing pipe is fixedly connected to a water inlet pipe, the right side of the pressure-reducing pipe is fixedly connected to a water outlet pipe, the top end of the pressure-reducing pipe is fixedly connected to an extension pipe, a slide groove is provided inside the top end of the extension pipe, a piston is slidably connected inside the slide groove of the extension pipe, a first spring is sleeved on the outer side of the piston, a connecting rod is tightly provided on the top end of the first spring, and a push handle is fixedly connected inside the connecting rod.

[0007] Preferably, a frame is tightly arranged on the top of the push handle, a shell is sleeved on the outer side of the push handle, a fixing pin is fixedly connected to the outer side of the shell, a rotating rod is sleeved on the outer side of the fixing pin, a slot is opened on the outer side of the rotating rod, and the fixing pin slides inside the slot of the rotating rod.

[0008] Preferably, a fixing block is provided at the rear side of the rotating rod, and a scale line is provided at the front end of the fixing block.

[0009] Preferably, a lower film cover is fixedly connected to the top of the main machine, and the other end of the lower film cover is arranged to penetrate inside the extrusion device.

[0010] Preferably, the extrusion device comprises an upper film cover inside, the bottom end of the upper film cover is fixedly connected to a partition, the top end of the upper film cover is fixedly connected to an air inlet pipe, and the other end of the air inlet pipe is fixedly connected to a main machine.

[0011] Preferably, a second spring is tightly mounted on the bottom end of the partition, and a membrane cover is tightly mounted on the bottom end of the second spring.

[0012] Preferably, the membrane cover and the lower membrane cover are fixedly connected by bolts, and two groups of the second springs are provided.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. During use, when the pressure in the pipe is not stable enough, the utility model allows liquid to enter the valve through the water inlet pipe, driving two springs to be compressed, thereby releasing the pressure inside the valve. As a result, the pressure of the liquid is more stable after passing through the valve, and the valve itself is protected to avoid damage to the valve due to long-term pressure changes.

[0015] 2. The utility model can observe the water pressure inside the extension pipe, the amount of water inflow, and the rise and fall of the piston in the extension rod by observing the scale line at the front end of the fixed block. By adjusting the water pipe pressure, the life of the water pipe is protected to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the pressure reducing pipeline of the utility model;

[0018] Figure 3 This is a schematic diagram of the piston structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of point A of the utility model.

[0020] In the figure: 1, valve body; 101, pressure reducing pipe; 102, water outlet pipe; 103, water inlet pipe; 104, extension pipe; 105, piston; 106, connecting rod; 107, push handle; 108, first spring;

[0021] 2. Balancing device; 201. Frame; 202. Fixing pin; 203. Housing; 204. Second spring; 205. Partition plate; 206. Valve stem; 207. Fixing block;

[0022] 3. Extrusion device; 301. Diaphragm; 302. Upper membrane cover; 303. Lower membrane cover; 304. Main engine; 305. Air inlet pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 4 As shown, the utility model provides an automatic pressure regulating valve, including a valve body 1, a balancing device 2 and an extruding device 3, the top of the valve body 1 is fixedly connected with the balancing device 2, the interior of the valve body 1 includes a pressure reducing pipe 101, the left side of the pressure reducing pipe 101 is fixedly connected with a water inlet pipe 103, the right side of the pressure reducing pipe 101 is fixedly connected with a water outlet pipe 102, the top of the pressure reducing pipe 101 is fixedly connected with an extension pipe 104, the top of the extension pipe 104 is provided with a slide groove, the slide groove of the extension pipe 104 is slidably connected with a piston 105, the outer side of the piston 105 is sleeved with a first spring 108, the top of the first spring 108 is tightly provided with a connecting rod 106, the inside of the connecting rod 106 is fixedly connected with a push handle 107, the piston 105 of the throttle valve slides up and down inside the extension pipe 104 at the top of the valve body 1, thereby changing the throttling area of ​​the regulating valve, thereby achieving the purpose of regulation.

[0025] Specifically, a frame 201 is tightly set on the top of the push handle 107, a shell 203 is sleeved on the outer side of the push handle 107, a fixing pin 202 is fixedly connected to the outer side of the shell 203, a valve stem 206 is sleeved on the outer side of the fixing pin 202, a slot is opened on the outer side of the valve stem 206, and the fixing pin 202 slides inside the slot of the valve stem 206.

[0026] Furthermore, a fixed block 207 is provided on the rear side of the valve stem 206, and a scale line is provided on the front end of the fixed block 207. The left side of the fixed block 207 is fixedly connected to the main unit 304. By observing the scale line at the front end of the fixed block 207, the water pressure inside the extension tube 104, the amount of water inlet, and the rise and fall of the piston 105 in the extension tube 104 can be observed. By adjusting the pressure of the valve body 1, the life of the valve body 1 is protected to the greatest extent.

[0027] Furthermore, the top of the main unit 304 is fixedly connected with a lower membrane cover 303, and the other end of the lower membrane cover 303 is arranged to penetrate the interior of the extrusion device 3, and the gas pressure pushes the diaphragm 301 to deform by converting the sucked gas into high pressure and low pressure.

[0028] It is worth mentioning that the extrusion device 3 includes an upper membrane cover 302, the bottom end of the upper membrane cover 302 is fixedly connected to the partition 205, the top end of the upper membrane cover 302 is fixedly connected to the air inlet pipe 305, and the other end of the air inlet pipe 305 is fixedly connected to the main unit 304, and the diaphragm 301 is extruded according to the signal generated inside the main unit 304.

[0029] It is worth noting that the second spring 204 is tightly disposed at the bottom end of the partition 205 , and the diaphragm 301 is tightly disposed at the bottom end of the second spring 204 , so that the deformation of the diaphragm 301 drives the second spring 204 to deform.

[0030] It is worth mentioning that the diaphragm 301 and the lower diaphragm cover 303 are fixedly connected by bolts, and two groups of second springs 204 are provided. The diaphragm 301 is squeezed upward under the action of atmospheric pressure, and the second spring 204 is deformed, thereby driving the connecting rod 106 to slide upward.

[0031] Working principle:

[0032] First, the regulating valve is composed of a main engine 304 and a valve body 1. The internal driving device of the regulating valve generates a corresponding thrust according to the size of the signal, so that the valve stem 206 produces a corresponding displacement, thereby driving the piston 105 of the regulating valve to slide up and down inside the extension tube 104 at the top of the valve body 1. The valve body 1 is the regulating part of the regulating valve, which is in direct contact with the medium. The piston 105 of the throttle valve slides up and down inside the extension tube 104 at the top of the valve body 1, thereby changing the throttling area of ​​the regulating valve, thereby achieving the purpose of regulation.

[0033] First, fix the water inlet pipe 103 on the left side of the water pipe valve body 1 with bolts and open the water pipe. At this time, water flows from the water inlet pipe 103 to the inside of the valve body 1. At this time, as the water pressure continues to increase, the water pressure lifts the piston 105 inside the extension tube 104 and squeezes the first spring 108 to deform upward and press against the inner wall of the extension tube 104. At this time, the piston 105 lifted by the water pressure drives the connecting rod 106 to slide upward and cooperate with the air inlet pipe 305 to inhale air from the outside. At this time, the air enters the inside of the main unit 304 and passes through the main unit 304. The air pressure is reduced. At this time, the diaphragm 301 is squeezed upward under the action of atmospheric pressure, and the second spring 204 is deformed, thereby driving the connecting rod 106 to slide upward. At this time, the connecting rod 106 drives the fixing pin 202 at the front end of the outer side of the outer shell 203 to slide upward, and drives the valve stem 206 on the outer side to rotate clockwise. At this time, by observing the scale line at the front end of the fixing block 207, the water pressure inside the extension tube 104, the amount of water inlet, and the rise and fall of the piston 105 in the extension tube 104 can be observed.

[0034] And when the air pressure needs to be lowered, only the host 304 needs to be adjusted. When the air pressure inside the host 304 is low, the diaphragm 301 cannot lift the second spring 204, and the connecting rod 106 cannot be raised. At this time, the first spring 108 squeezes the piston 105 to slide downward and block the water flow. At this time, the water flow cannot be discharged from the inside of the water outlet pipe 102 through the pressure reducing pipe 101, thereby completing the pressure regulation of the water flow.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic pressure regulating valve, comprising a valve body (1), a balancing device (2) and an extrusion device (3), wherein the top end of the valve body (1) is fixedly connected to the balancing device (2), and characterized in that: The valve body (1) comprises a pressure reducing pipe (101) inside, a water inlet pipe (103) is fixedly connected to the left side of the pressure reducing pipe (101), a water outlet pipe (102) is fixedly connected to the right side of the pressure reducing pipe (101), an extension pipe (104) is fixedly connected to the top of the pressure reducing pipe (101), a slide groove is provided inside the top of the extension pipe (104), a piston (105) is slidably connected inside the slide groove of the extension pipe (104), a first spring (108) is sleeved on the outer side of the piston (105), a connecting rod (106) is tightly provided on the top of the first spring (108), and a push handle (107) is fixedly connected inside the connecting rod (106).

2. The automatic pressure regulating valve according to claim 1, characterized in that: A frame (201) is tightly arranged on the top of the push handle (107), a shell (203) is sleeved on the outer side of the push handle (107), a fixing pin (202) is fixedly connected to the outer side of the shell (203), a valve stem (206) is sleeved on the outer side of the fixing pin (202), a notch is provided on the outer side of the valve stem (206), and the fixing pin (202) slides inside the notch of the valve stem (206).

3. The automatic pressure regulating valve according to claim 2, characterized in that: A fixing block (207) is arranged at the rear side of the valve stem (206), a scale line is arranged at the front end of the fixing block (207), and a main machine (304) is fixedly connected to the left side of the fixing block (207).

4. The automatic pressure regulating valve according to claim 3, characterized in that: The top end of the main machine (304) is fixedly connected to a lower film cover (303), and the other end of the lower film cover (303) is arranged to penetrate the interior of the extrusion device (3).

5. The automatic pressure regulating valve according to claim 4, characterized in that: The extrusion device (3) includes an upper film cover (302) inside, the bottom end of the upper film cover (302) is fixedly connected to a partition plate (205), and the top end of the upper film cover (302) is fixedly connected to an air inlet pipe (305).

6. The automatic pressure regulating valve according to claim 5, characterized in that: A second spring (204) is tightly mounted on the bottom end of the partition (205), and a diaphragm (301) is tightly mounted on the bottom end of the second spring (204).

7. The automatic pressure regulating valve according to claim 6, characterized in that: The diaphragm (301) and the lower diaphragm cover (303) are fixedly connected by bolts, and two groups of the second springs (204) are provided.

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