CN115929961A

CN115929961A - Self-operated pressure regulating valve and use method thereof

Info

Publication number: CN115929961A
Application number: CN202310141171.5A
Authority: CN
Inventors: 陈旭
Original assignee: Sichuan Xuxin Valve Manufacturing Co ltd
Current assignee: Sichuan Xuxin Valve Manufacturing Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-04-07
Anticipated expiration: 2043-02-21
Also published as: CN115929961B

Abstract

The invention discloses a self-operated pressure regulating valve and a use method thereof, and relates to the technical field of regulating valves, the self-operated pressure regulating valve comprises a valve body, wherein a first pipeline is arranged on one side of the valve body, a second pipeline is arranged on one side of the valve body, which is far away from the first pipeline, flange plate assemblies are arranged on two sides of the valve body, the first pipeline and the second pipeline are both sleeved with the valve body through the flange plate assemblies, and pressure gauges are arranged on the outer surfaces of the first pipeline and the second pipeline; pressure regulating valve takes place the police dispatch newspaper when taking place to block up in going to press the pipe, and the staff of being convenient for in time maintains, and can carry out the automation to the cassette that goes to press the pipe and clear up, is convenient for change the cassette, guarantees that pressure regulating valve can carry out the pressure adjustment.

Description

Self-operated pressure regulating valve and use method thereof

Technical Field

The invention relates to the technical field of regulating valves, in particular to a self-operated pressure regulating valve and a using method thereof.

Background

The self-operated pressure regulating valve is divided into three series of self-operated pressure, pressure difference and flow regulating valves. For flow pressure regulation, a flow regulating valve is applied in a pipe network, the flow can be directly set according to the design, the valve can automatically eliminate flow deviation caused by pressure fluctuation under the action of liquid, the set flow is kept unchanged no matter how the system pressure changes, the functions of the pressure regulating valve enable the pipe network flow regulation to be completed at one time, and the hydraulic imbalance of the pipe network is effectively solved.

After the existing pressure regulating valve is used for a long time, the position of a valve rod is easy to deviate, the valve core and the position of a valve cover are misaligned, the liquid leakage problem is caused, the pressure regulating valve is easy to damage only by one spring in the pressing process, in addition, the pipeline is thin when the existing pressure regulating valve is used for pressing the pipe, the blockage is easy to occur, the automatic cleaning cannot be carried out, the pressure regulation cannot be realized, and a worker cannot timely maintain the blockage.

Aiming at the problems, the invention provides a self-operated pressure regulating valve and a using method thereof.

Disclosure of Invention

The invention aims to provide a self-operated pressure regulating valve and a using method thereof, wherein a correcting groove and a correcting block are clamped to align communicating holes on a first flange and a second flange, the first flange and the second flange are fixedly sleeved by bolts and nuts, the sleeving of the first flange and the second flange is used for communicating a valve body, a first pipeline and a second pipeline, and sealing rings on the first flange and the second flange are mutually extruded under the action of a first spring when the first flange and the second flange are close to each other, so that the sealing performance of the first flange and the second flange is better, and liquid leakage at the connecting part of the valve body, the first pipeline and the second pipeline is prevented; when the pressure at the second pipeline is increased, liquid flows into the pressure relief pipe to be adjusted, the liquid is often accompanied with impurities, the pressure relief pipe is relatively thin and is easy to block, a filter sheet is arranged at the inlet of the pressure relief pipe to prevent the pressure relief pipe from being blocked, when the filter sheet is blocked, the liquid in the second pipeline is difficult to flow into the pressure relief pipe to increase the internal pressure of the filter box, at the moment, the second spring is compressed to enable the sliding block to slide in the filter box until the pressing button enables the alarm to give an alarm, and a worker is reminded of maintaining; the third spring pushes the brush holder to move in the sliding process of the sliding block, the brush hair cleans the filter at the moment, the outer surface of the filter is guaranteed to be clean, liquid in the second pipeline can circulate with the decompression pipe, a worker can also drive the sliding block to move up and down by pulling the pull ring back and forth, the sliding block drives the connecting rod to move at the moment, the brush hair can be cleaned on the outer surface of the filter repeatedly, the filter can be replaced by the fixing mechanism, and the leakage-proof plate is pumped into the filter box when the filter is replaced, so that the liquid is prevented from flowing out randomly; the liquid that goes in pressing the pipe flows into the pressure cell and makes in the piece of execution piece extrusion valve rod, and the valve rod drives case and valve gap laminating this moment, and the liquid flow that first pipeline flowed through in valve body to the second pipeline just changes like this, plays the effect of pressure adjustment, and stop gear can make the valve rod not take place the skew at the in-process that pushes down, avoids long-time work to cause case and valve gap position to be uneven and the weeping problem appears to the problem among the background art has been solved.

In order to achieve the purpose, the invention provides the following technical scheme: a self-operated pressure regulating valve comprises a valve body, wherein a first pipeline is arranged on one side of the valve body, a second pipeline is arranged on one side of the valve body away from the first pipeline, flange assemblies are arranged on two sides of the valve body, the first pipeline and the second pipeline are sleeved with the valve body through the flange assemblies, pressure gauges are arranged on the outer surfaces of the first pipeline and the second pipeline, a filtering assembly is arranged on the outer surface of the second pipeline, a pressure relief pipe is sleeved on the upper surface of the filtering assembly, an adjusting assembly is arranged at the tail end of the pressure relief pipe away from the filtering assembly, and a valve cover is fixedly installed in an inner cavity of the valve body;

the filter assembly comprises a filter box, a filter disc is connected to the inner cavity of the top end of the filter box in a sliding mode, an alarm mechanism is arranged on one side of the filter box, a fixing mechanism is arranged on one side, away from the alarm mechanism, of the filter box, a leakage-proof plate is connected to the bottom side of the filter box in a sliding mode, the leakage-proof plate is connected with the second pipeline in a sliding mode, and a cleaning mechanism is arranged in the inner cavity of the filter box.

Further, the ring flange subassembly includes first flange, one side of first flange is provided with the second flange, the intercommunicating pore has all been seted up to the surface of first flange and second flange, the groove has all been seted up to the surface of first flange and second flange and has been accomodate, the inner chamber sliding connection who accomodates the groove has the extrusion ring, one side fixedly connected with sealing washer of extrusion ring, one side of extrusion ring principle sealing washer is provided with first spring, first spring and the inner chamber fixed connection who accomodates the groove, the surface of first flange has been seted up and has been corrected the groove, the fixed surface of second flange installs and corrects the piece.

Further, the first flange and the second flange are fixedly connected through bolts and nuts, the correction groove is clamped with the correction block, and the communication hole in the first flange and the communication hole in the second flange are communicated and aligned when the correction groove and the correction block are clamped.

Further, alarm mechanism includes the sliding block, and the chute has been seted up to the surface of sliding block, and one side fixed mounting that the sliding block kept away from the sliding block has the pull ring, and the last fixed surface of filter cartridge installs the fixing base, and the lower surface of fixing base is provided with the button, and the lower fixed surface of fixing base is connected with the second spring, and the upper surface of fixing base is provided with the siren, and the last fixed surface of sliding block installs the closing plate.

Further, the work of button control siren, the bottom and the sliding block fixed connection of second spring, sliding block and filter cartridge sliding connection, the sliding block is hugged closely to the closing plate, and the closing plate is located chute department top.

Furthermore, the fixing mechanism comprises a fixing block, the fixing block is fixedly connected with the filter box, a fixing bolt is arranged in an inner cavity of the fixing block, a connecting plate is slidably connected to an inner cavity of the filter box, the fixing block is fixedly connected with the connecting plate through the fixing bolt, and the connecting plate is fixedly connected with the filter piece.

Further, clearance mechanism is including accomodating the frame, accomodate frame and filter-box fixed connection, accomodate frame and filter plate sliding connection, the inner chamber sliding connection who accomodates the frame has the brush yoke, one side that is close to the filter plate of brush yoke is provided with the brush hair, the filter plate is hugged closely to the brush hair, one side fixedly connected with connecting rod of brush yoke, sliding connection of connecting rod in the inner chamber of accomodating the frame, the one end and the chute sliding connection of connecting rod, one side fixedly connected with third spring of brush yoke, the one end and the filter-box fixed connection of brush yoke are kept away from to the third spring.

Further, the adjusting component comprises a pressure box, an executing sheet is arranged in the middle of an inner cavity of the pressure box, the bottom layer of the executing sheet is fixedly connected with a valve rod, the bottom end of the valve rod is fixedly connected with a valve core, a seat cushion is sleeved on the outer surface of the valve rod, a fourth spring is sleeved on the outer surface of the valve rod, the seat cushion is provided with two springs, the fourth spring is located between the two seat cushions, and a limiting mechanism is sleeved on the outer surface of the valve rod.

Further, stop gear includes the bottom plate, the both ends fixed mounting of bottom plate has the stand, spacing hole has been seted up to the surface of stand, the surface sliding connection of stand has the connecting strip, the lower fixed surface of connecting strip installs down the clamping ring, the surface sliding connection of stand has the slip cap, the bottom of slip cap is inserted and is equipped with the gag lever post, fixed cover has been cup jointed to the one end of gag lever post, the fifth spring has been cup jointed to the surface of gag lever post, the upper end fixed mounting of slip cap has the buffer cylinder, spacing hole and gag lever post block, the fifth spring is located between fixed cover and the fifth spring, the buffer cylinder inner chamber is provided with the sixth spring, the inner chamber of lower clamping ring and buffer cylinder cup joints, the middle part of connecting strip passes the valve rod, the seatpad fixed connection of valve rod and upper end, the seatpad sliding connection of valve rod and lower extreme.

A self-operated pressure regulating valve using method is executed by the device and comprises the following steps:

s1, aligning communicating holes in a first flange and a second flange by clamping a correcting groove and a correcting block, fixedly sleeving the first flange and the second flange through bolts and nuts, and communicating a valve body, a first pipeline and a second pipeline through sleeving the first flange and the second flange;

s2, when the pressure at the second pipeline is increased, liquid flows into the pressure relief pipe to be adjusted, the liquid is often accompanied by impurities, the pressure relief pipe is thin and easy to block, a filter sheet is arranged at the inlet of the pressure relief pipe to prevent the pressure relief pipe from being blocked, when the filter sheet is blocked, the liquid in the second pipeline is difficult to flow into the pressure relief pipe to increase the internal pressure of the filter box, at the moment, the second spring is compressed to enable the sliding block to slide in the filter box until the button is extruded to enable the alarm to give an alarm, and a worker is reminded of maintaining;

s3, in the sliding process of the sliding block, the third spring pushes the brush holder to move, the brush hair cleans the filter, the outer surface of the filter is guaranteed to be clean, liquid in the second pipeline can be communicated with the decompression pipe, a worker can pull the pull ring back and forth to drive the sliding block to move up and down, the sliding block drives the connecting rod to move, the brush hair can clean the outer surface of the filter repeatedly, the filter can be replaced by the fixing mechanism, and the leakage-proof plate is sucked into the filter box when the filter is replaced, so that the liquid is prevented from flowing out randomly;

s4, liquid in the pressure relief pipe flows into the pressure box and the execution sheet so that the execution sheet extrudes the valve rod, the valve rod drives the valve core and the valve cover to be attached, the liquid flow from the valve body to the second pipeline through the first pipeline is changed, the pressure adjusting effect is achieved, the limiting mechanism can enable the valve rod not to deviate in the pressing process, and the problem of liquid leakage caused by the fact that the positions of the valve core and the valve cover are not aligned due to long-time work is avoided.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the self-operated pressure regulating valve and the use method thereof, the pressure regulating valve can prevent the valve rod from deviating in the use process, the positions of the valve core and the valve cover are always aligned, the liquid leakage problem is avoided, the pressure is regulated by the aid of the springs, and the service life of the pressure regulating valve is prolonged.

2. According to the self-operated pressure regulating valve and the use method thereof, the pressure regulating valve gives an alarm when the pressure relieving pipe is blocked, so that the pressure regulating valve is convenient for workers to maintain in time, can automatically clean the filter disc of the pressure relieving pipe, is convenient to replace the filter disc, and can ensure that the pressure regulating valve can regulate the pressure.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the valve body structure of the present invention;

FIG. 3 is a schematic view of a second flange according to the present invention;

FIG. 4 is a schematic cross-sectional view of a first flange structure of the present invention;

FIG. 5 is a schematic cross-sectional view of the filter assembly of the present invention;

FIG. 6 is a schematic view of a filter sheet according to the present invention;

FIG. 7 is a schematic view of the alarm mechanism of the present invention;

FIG. 8 is a schematic view of a storage rack according to the present invention;

FIG. 9 is a schematic view of the cleaning mechanism of the present invention;

FIG. 10 is a schematic view of an adjustment assembly of the present invention;

FIG. 11 is a schematic cross-sectional view of a pressure cell configuration of the present invention;

FIG. 12 is a schematic structural view of a limiting mechanism according to the present invention;

FIG. 13 is an enlarged view of the structure at A in FIG. 12 according to the present invention.

In the figure: 1. a valve body; 2. a first conduit; 3. a second conduit; 4. a flange assembly; 41. a first flange; 42. a second flange; 43. a communicating hole; 44. a receiving groove; 45. an extrusion ring; 46. a seal ring; 47. a first spring; 48. a correction slot; 49. a rectification block; 5. a pressure gauge; 6. a filter assembly; 61. a filter cartridge; 62. a filter disc; 63. an alarm mechanism; 631. a slider; 632. a chute; 633. a pull ring; 634. a fixed seat; 635. a button; 636. a second spring; 637. an alarm; 638. a sealing plate; 64. a fixing mechanism; 641. a fixed block; 642. a fixing bolt; 643. a connecting plate; 65. a leak-proof plate; 66. a cleaning mechanism; 661. a storage rack; 662. a brush holder; 663. brushing; 664. a connecting rod; 665. a third spring; 7. decompressing the tube; 8. an adjustment assembly; 81. a pressure cell; 82. executing the slice; 83. a valve stem; 84. a valve core; 85. a seat cushion; 86. a fourth spring; 87. a limiting mechanism; 871. a base plate; 872. a column; 873. a limiting hole; 874. a connecting strip; 875. a lower pressure ring; 876. a sliding sleeve; 877. a limiting rod; 878. fixing a sleeve; 879. a fifth spring; 8710. a buffer cylinder; 9. and a valve cover.

Detailed description of the preferred embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1 and fig. 2, a self-operated pressure regulating valve, which includes a valve body 1, a first pipeline 2 is disposed on one side of the valve body 1, a second pipeline 3 is disposed on one side of the valve body 1 away from the first pipeline 2, flange assemblies 4 are disposed on both sides of the valve body 1, the first pipeline 2 and the second pipeline 3 are both sleeved with the valve body 1 through the flange assemblies 4, pressure gauges 5 are disposed on outer surfaces of the first pipeline 2 and the second pipeline 3, a filtering assembly 6 is disposed on an outer surface of the second pipeline 3, a decompression pipe 7 is sleeved on an upper surface of the filtering assembly 6, an adjusting assembly 8 is disposed at a tail end of the decompression pipe 7 away from the filtering assembly 6, a valve cover 9 is fixedly disposed in an inner cavity of the valve body 1, the valve body 1 is used for adjusting flow rates on both sides of the first pipeline 2 and the second pipeline 3, the flange assemblies 4 are used for connecting the valve body 1, the first pipeline 2 and the second pipeline 3, the pressure gauges 5 are used for measuring pressures of the first pipeline 2 and the second pipeline 3, the filtering assembly 6 is used for alarming in time when a blockage occurs, and cleaning the inside of the valve cover, the decompression pipe 7 is used for transferring liquid into the adjusting assembly 8, and the adjusting assembly 8 is used for adjusting the pressure of the valve body 1.

Referring to fig. 5 and 6, the filter assembly 6 includes a filter box 61, a filter plate 62 is slidably connected to a top cavity of the filter box 61, an alarm mechanism 63 is disposed on one side of the filter box 61, a fixing mechanism 64 is disposed on a side of the filter box 61 away from the alarm mechanism 63, a leakage-proof plate 65 is slidably connected to a bottom side of the filter box 61, the leakage-proof plate 65 is slidably connected to the second pipe 3, a cleaning mechanism 66 is disposed in the cavity of the filter box 61, the liquid in the second pipe 3 flows into the decompression pipe 7 through the filter box 61, the filter plate 62 can filter the liquid flowing through the decompression pipe 7 to prevent the decompression pipe 7 from being blocked, the alarm mechanism 63 can send an alarm when the filter plate 62 is blocked and drive the cleaning mechanism 66 to clean the filter plate 62, the fixing mechanism 64 can replace the filter plate 62, and the leakage-proof plate 65 is slid into the filter box 61 when the filter plate 62 is replaced to prevent the liquid in the second pipe 3 from flowing out.

Referring to fig. 2, 3 and 4, the flange assembly 4 includes a first flange 41, a second flange 42 is disposed on one side of the first flange 41, a communication hole 43 is disposed on outer surfaces of the first flange 41 and the second flange 42, a receiving groove 44 is disposed on outer surfaces of the first flange 41 and the second flange 42, a pressing ring 45 is slidably connected to an inner cavity of the receiving groove 44, a sealing ring 46 is fixedly connected to one side of the pressing ring 45, a first spring 47 is disposed on one side of the pressing ring 45 and fixedly connected to an inner cavity of the receiving groove 44, a correcting groove 48 is disposed on an outer surface of the first flange 41, a correcting block 49 is fixedly mounted on an outer surface of the second flange 42, the first flange 41 and the second flange 42 are fixedly connected by a bolt and a nut, the correcting groove 48 and the correcting block 49 are engaged, the communication hole 43 on the first flange 41 and the communication hole 43 on the second flange 42 are aligned when the correcting groove 48 and the correcting block 49 are engaged, the first flange 41 and the second flange 42 are engaged with each other, the first flange 41 and the second flange 42 are connected to the second flange 41, the second flange 42, the first flange is connected to the second flange 41 and the second flange 42, the second flange 41, the second flange is connected to the pipe 1, the second pipe 1, and 3, and the second pipe 1.

Referring to fig. 7 and 9, the alarm mechanism 63 includes a sliding block 631, a chute 632 is formed on an outer surface of the sliding block 631, a pull ring 633 is fixedly mounted on a side of the sliding block 631, a fixing seat 634 is fixedly mounted on an upper surface of the filter cartridge 61, a button 635 is disposed on a lower surface of the fixing seat 634, a second spring 636 is fixedly connected to a lower surface of the fixing seat 634, an alarm 637 is disposed on an upper surface of the fixing seat 634, a sealing plate 638 is fixedly mounted on an upper surface of the sliding block 631, the button 635 controls operation of the alarm 637, a bottom end of the second spring 636 is fixedly connected to the sliding block 631, the sliding block 631 is slidably connected to the filter cartridge 61, the sealing plate 638 is closely attached to the sliding block 631, the sealing plate 638 is located above the chute 632, when the filter sheet 62 is blocked, the liquid in the second pipeline 3 is difficult to flow into the chute 7, so that the pressure inside the filter cartridge 61 is increased, the sliding block 631 is pressed by the liquid in the filter cartridge 61, so that the sliding block 631 slides in the filter cartridge 61 until the button 635 presses the button 635 to issue an alarm to prompt a worker to perform maintenance.

Referring to fig. 7, 8 and 9, the fixing mechanism 64 includes a fixing block 641, the fixing block 641 is fixedly connected with the filter cartridge 61, a fixing bolt 642 is disposed in an inner cavity of the fixing block 641, a connecting plate 643 is slidably connected with an inner cavity of the filter cartridge 61, the fixing block 641 and the connecting plate 643 are fixedly connected with each other by the fixing bolt 642, the connecting plate 643 is fixedly connected with the filter sheet 62, the cleaning mechanism 66 includes a housing frame 661, the housing frame 661 is fixedly connected with the filter cartridge 61, the housing frame 661 is slidably connected with the filter sheet 62, a brush frame 662 is slidably connected with the inner cavity of the housing frame 661, bristles 663 are disposed on a side of the brush frame 662 close to the filter sheet 62, the bristles 663 are tightly attached to the filter sheet 62, a connecting rod 664 is fixedly connected with one side of the brush frame 662, the connecting rod 664 is slidably connected in the inner cavity of the housing frame 661, one end of the connecting rod 664 is slidably connected with the inclined groove 632, a third spring 665 is fixedly connected with one side of the brush frame 662, the end of the third spring 665 far from the brush holder 662 is fixedly connected with the filter box 61, during the sliding of the sliding block 631, the elastic force of the third spring 665 enables the connecting rod 664 to slide on the chute 632, i.e. the third spring 665 pushes the brush holder 662 to move, at this time, the bristles 663 clean the filter 62, so as to ensure that the outer surface of the filter 62 is clean, so that the liquid in the second pipeline 3 can be communicated with the decompression tube 7, a worker can also pull the pull ring 633 back and forth to drive the sliding block 631 to move up and down, at this time, the sliding block 631 drives the connecting rod 664 to move, so that the bristles 663 can repeatedly clean the outer surface of the filter 62, so as to ensure the liquid in the decompression tube 7 to circulate, when the filter 62 needs to be replaced, the fixing bolt 642 is released, so that the fixing between the fixing block 641 and the connecting plate 643 is disengaged, so that the connecting plate 643 can be pulled out of the inner cavity of the filter box 61, and the connecting plate 643 is fixedly connected with the filter 62, at this time, the filter sheet 62 and the connecting plate 643 can be replaced, and after the replacement, the connecting plate 643 is fixed by the fixing plug 642, and the leakage-preventing plate 65 is inserted into the inner cavity of the filter cassette 61 during the replacement of the filter sheet 62, so as to prevent the liquid in the second tube 3 from being sprayed out of the filter cassette 61.

Referring to fig. 10 and 11, the adjusting assembly 8 includes a pressure box 81, an actuating plate 82 is disposed in the middle of an inner cavity of the pressure box 81, a valve rod 83 is fixedly connected to a bottom layer of the actuating plate 82, a valve core 84 is fixedly connected to a bottom end of the valve rod 83, a seat cushion 85 is sleeved on an outer surface of the valve rod 83, a fourth spring 86 is sleeved on an outer surface of the valve rod 83, the fourth spring 86 is located between the two seat cushions 85, a limiting mechanism 87 is sleeved on an outer surface of the valve rod 83, liquid in the decompression pipe 7 flows into the pressure box 81 and the actuating plate 82, so that the actuating plate 82 extrudes the valve rod 83, the seat cushion 85 compresses at the moment, the valve rod 83 drives the valve core 84 to be attached to the valve cover 9, and thus the flow rate of the liquid flowing through the valve body 1 from the first pipeline 2 to the second pipeline 3 is changed to perform a pressure adjusting function.

Referring to fig. 11, 12 and 13, the limiting mechanism 87 includes a base plate 871, two ends of the base plate 871 are fixedly mounted with a stand column 872, an outer surface of the stand column 872 is provided with a limiting hole 873, an outer surface of the stand column 872 is slidably connected with a connecting bar 874, a lower pressing ring 875 is fixedly mounted on a lower surface of the connecting bar 874, an outer surface of the stand column 872 is slidably connected with a sliding sleeve 876, a bottom end of the sliding sleeve 876 is inserted with a limiting rod 877, one end of the limiting rod 877 is sleeved with a fixing sleeve 878, an outer surface of the limiting rod 877 is sleeved with a fifth spring 879, an upper end of the sliding sleeve 876 is fixedly mounted with a buffer cylinder 8710, the limiting hole 873 is clamped with the limiting rod 877, the fifth spring 879 is located between the fixing sleeve 878 and the fifth spring 879, an inner cavity of the buffer cylinder 8710 is provided with a sixth spring, the lower pressing ring 875 is sleeved with a valve rod of the buffer cylinder 8710, a middle portion of the connecting bar penetrates through a cushion 83, an upper end of the valve rod 874 is fixedly connected with an upper end 85 of the cushion 83, the valve rod 83 is fixedly connected with an lower end 85, and a lower end 85 of the valve rod 83 is slidably connected with a lower end 85, the connecting bar 874 is inserted into the valve rod 83, and two ends of the connecting bar 874 are slidably connected with the upright post 872, at this time, the valve rod 83 can be ensured not to be deviated in the process of pressing down, the problem of liquid leakage caused by the misalignment of the valve core 84 and the valve cover 9 due to long-time work is avoided, the limiting rod 877 is pulled to compress the fifth spring 879, the limiting rod 877 is disengaged from the limiting hole 873, the position of the sliding sleeve 876 on the upright post 872 is adjusted, the position of the buffer cylinder 8710 is changed, the pressing-down ring 875 can be opposite to the inner cavity of the buffer cylinder 8710 in pressing down, the buffer cylinder 8710 can buffer to a certain extent under the action of the sixth spring, so that the valve core 84 and the valve cover 9 are prevented from being damaged due to too large pressure in the process of pressing down the valve core 84, the service life of the pressure regulating valve is prolonged, the buffering force of the sixth spring 8710 is controlled by adjusting the position of the buffer cylinder 8710, the valve core 84 can be jointed with the valve cover 9 to control the flow of the liquid.

To sum up: the aligning groove 48 and the aligning block 49 are clamped to align the communicating holes 43 on the first flange 41 and the second flange 42, the first flange 41 and the second flange 42 are fixedly connected through bolts and nuts, the sleeving connection of the first flange 41 and the second flange 42 is used for communicating the valve body 1, the first pipeline 2 and the second pipeline 3, when the first flange 41 and the second flange 42 are close to each other, the sealing rings 46 on the first flange 41 and the second flange 42 are mutually pressed under the action of the first spring 47, so that the sealing performance of the first flange 41 and the second flange 42 is better, and liquid leakage at the connecting part of the valve body 1, the first pipeline 2 and the second pipeline 3 is prevented; when the pressure at the second pipeline 3 is increased, liquid flows into the pressure relief pipe 7 to be regulated, the liquid is often accompanied by impurities, the pressure relief pipe 7 is relatively thin and is easy to block, a filter sheet 62 is arranged at the inlet of the pressure relief pipe 7 to prevent the pressure relief pipe 7 from being blocked, when the filter sheet 62 is blocked, the liquid in the second pipeline 3 is difficult to flow into the pressure relief pipe 7, so that the internal pressure of the filter box 61 is increased, at the moment, the second spring 636 is compressed to enable the sliding block 631 to slide in the filter box 61 until the pressing button 635 enables the alarm 637 to give an alarm, and a worker is reminded of maintenance; the third spring 665 pushes the brush holder 662 to move in the sliding process of the sliding block 631, at this time, the bristles 663 clean the filter 62, so that the outer surface of the filter 62 is clean, liquid in the second pipeline 3 can circulate with the decompression pipe 7, a worker can also drive the sliding block 631 to move up and down by pulling the pull ring 633 back and forth, at this time, the sliding block 631 drives the connecting rod 664 to move, so that the bristles 663 can clean the outer surface of the filter 62 repeatedly, the filter 62 can be replaced by the fixing mechanism 64, and the leakage-proof plate 65 is sucked into the filter box 61 when the filter 62 is replaced, so that the liquid is prevented from flowing out randomly; the liquid in the decompression pipe 7 flows into the pressure box 81 and the execution sheet 82, so that the execution sheet 82 extrudes the valve rod 83, at the moment, the valve rod 83 drives the valve core 84 and the valve cover 9 to be attached, the liquid flow in the first pipeline 2 flowing through the valve body 1 to the second pipeline 3 is changed, the pressure adjusting effect is achieved, the limiting mechanism 87 can enable the valve rod 83 not to deviate in the pressing process, and the problem of liquid leakage caused by the fact that the positions of the valve core 84 and the position of the valve cover 9 are not aligned due to long-time operation is avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a self-operated pressure regulating valve, includes valve body (1), its characterized in that: a first pipeline (2) is arranged on one side of the valve body (1), a second pipeline (3) is arranged on one side, away from the first pipeline (2), of the valve body (1), flange plate assemblies (4) are arranged on two sides of the valve body (1), the first pipeline (2) and the second pipeline (3) are sleeved with the valve body (1) through the flange plate assemblies (4), pressure gauges (5) are arranged on the outer surfaces of the first pipeline (2) and the second pipeline (3), a filtering assembly (6) is arranged on the outer surface of the second pipeline (3), a pressure relief pipe (7) is sleeved on the upper surface of the filtering assembly (6), an adjusting assembly (8) is arranged at the tail end, away from the filtering assembly (6), of the pressure relief pipe (7), and a valve cover (9) is fixedly installed in the inner cavity of the valve body (1);

the filter assembly (6) comprises a filter box (61), a filter sheet (62) is connected to the inner cavity of the top end of the filter box (61) in a sliding mode, an alarm mechanism (63) is arranged on one side of the filter box (61), a fixing mechanism (64) is arranged on one side, away from the alarm mechanism (63), of the filter box (61), a leakage-proof plate (65) is connected to the bottom side of the filter box (61) in a sliding mode, the leakage-proof plate (65) is connected with the second pipeline (3) in a sliding mode, and a cleaning mechanism (66) is arranged in the inner cavity of the filter box (61).

2. A self-operated pressure regulating valve according to claim 1, wherein: flange plate subassembly (4) includes first flange (41), one side of first flange (41) is provided with second flange (42), intercommunicating pore (43) have all been seted up to the surface of first flange (41) and second flange (42), the surface of first flange (41) and second flange (42) has all been seted up and has been accomodate groove (44), the inner chamber sliding connection who accomodates groove (44) has extrusion ring (45), one side fixedly connected with sealing washer (46) of extrusion ring (45), one side of extrusion ring (45) principle sealing washer (46) is provided with first spring (47), first spring (47) and the inner chamber fixed connection who accomodates groove (44), correction groove (48) have been seted up to the surface of first flange (41), the outer fixed surface of second flange (42) installs correction piece (49).

3. A self-operated pressure regulator valve as defined in claim 2, wherein: the first flange (41) and the second flange (42) are fixedly connected through bolts and nuts, the correcting groove (48) is clamped with the correcting block (49), and when the correcting groove (48) is clamped with the correcting block (49), the communicating hole (43) on the first flange (41) is communicated and aligned with the communicating hole (43) on the second flange (42).

4. A self-operated pressure regulator valve as defined in claim 1, wherein: alarm mechanism (63) includes sliding block (631), chute (632) have been seted up to the surface of sliding block (631), one side fixed mounting that sliding block (631) was kept away from to sliding block (631) has pull ring (633), the last fixed surface of filter cartridge (61) installs fixing base (634), the lower surface of fixing base (634) is provided with button (635), the lower fixed surface of fixing base (634) is connected with second spring (636), the upper surface of fixing base (634) is provided with siren (637), the last fixed surface of sliding block (631) installs closing plate (638).

5. A self-operated pressure regulator valve as defined in claim 4, wherein: the button (635) controls the work of the alarm (637), the bottom end of the second spring (636) is fixedly connected with the sliding block (631), the sliding block (631) is slidably connected with the filter box (61), the sealing plate (638) is tightly attached to the sliding block (631), and the sealing plate (638) is located above the inclined groove (632).

6. A self-operated pressure regulator valve as defined in claim 1, wherein: the fixing mechanism (64) comprises a fixing block (641), the fixing block (641) is fixedly connected with the filter box (61), a fixing bolt (642) is arranged in the inner cavity of the fixing block (641), a connecting plate (643) is connected to the inner cavity of the filter box (61) in a sliding mode, the fixing block (641) is fixedly connected with the connecting plate (643) through the fixing bolt (642), and the connecting plate (643) is fixedly connected with the filter sheet (62).

7. A self-operated pressure regulator valve as defined in claim 1, wherein: clearance mechanism (66) are including accomodating frame (661), accomodate frame (661) and filter cartridge (61) fixed connection, accomodate frame (661) and filter disc (62) sliding connection, the inner chamber sliding connection who accomodates frame (661) has brush yoke (662), one side of brush yoke (662) that is close to filter disc (62) is provided with brush hair (663), filter disc (62) is hugged closely in brush hair (663), one side fixed connection of brush yoke (662) has connecting rod (664), connecting rod (664) sliding connection in the inner chamber of accomodating frame (661), the one end and chute (632) sliding connection of connecting rod (664), one side fixed connection of brush yoke (662) has third spring (665), the one end and filter cartridge (61) fixed connection that brush yoke (662) were kept away from to third spring (665).

8. A self-operated pressure regulator valve as defined in claim 1, wherein: the adjusting component (8) comprises a pressure box (81), an executing sheet (82) is arranged in the middle of an inner cavity of the pressure box (81), a bottom layer fixedly connected with valve rod (83) of the executing sheet (82), a bottom end fixedly connected with valve core (84) of the valve rod (83), a seat cushion (85) is sleeved on the outer surface of the valve rod (83), a fourth spring (86) is sleeved on the outer surface of the valve rod (83), two seat cushions (85) are arranged, the fourth spring (86) is located between the two seat cushions (85), and a limiting mechanism (87) is sleeved on the outer surface of the valve rod (83).

9. A self-operated pressure regulator valve as defined in claim 8, wherein: limiting mechanism (87) includes bottom plate (871), the both ends fixed mounting of bottom plate (871) has stand (872), spacing hole (873) have been seted up to the surface of stand (872), the surface sliding connection of stand (872) has connecting strip (874), the fixed surface mounting of connecting strip (874) has down clamping ring (875), the surface sliding connection of stand (872) has slip cap (876), the bottom of slip cap (876) is inserted and is equipped with gag lever post (877), the fixed cover (878) have been cup jointed to the one end of gag lever post (877), the surface of gag lever post (877) has cup jointed fifth spring (879), the upper end fixed mounting of slip cap (876) has a cushion cylinder (8710), spacing hole (873) and gag lever post (877) block, fifth spring (879) are located between fixed cover (878) and fifth spring (879), clamping ring (8710) inner chamber is provided with the sixth spring, the inner chamber of lower part (8710) cup joints the cushion cylinder (8710), the inner chamber of lower part (8710) cup joints the valve rod (871) and passes the connecting strip (83) and the connecting strip (85), valve rod (875), slip connection upper end (85).

10. A method of using a self-operated pressure regulator valve, performed by a self-operated pressure regulator valve according to any one of claims 1 to 9, comprising the steps of:

s1, aligning a communicating hole (43) on a first flange (41) and a second flange (42) by clamping a correcting groove (48) and a correcting block (49), fixedly sleeving the first flange (41) and the second flange (42) through bolts and nuts, wherein the sleeving of the first flange (41) and the second flange (42) is used for communicating a valve body (1), a first pipeline (2) and a second pipeline (3), and when the first flange (41) and the second flange (42) are close to each other, a sealing ring (46) on the first flange (41) and a sealing ring (46) on the second flange (42) are mutually extruded under the action of a first spring (47), so that the sealing performance of the first flange (41) and the second flange (42) is better, and liquid leakage at the connecting part of the valve body (1), the first pipeline (2) and the second pipeline (3) is prevented;

s2, when the pressure at the second pipeline (3) is increased, liquid flows into the pressure relieving pipe (7) to be adjusted, the liquid is often accompanied by impurities, the pressure relieving pipe (7) is relatively thin and is easy to block, a filter sheet (62) is arranged at the inlet of the pressure relieving pipe (7) to prevent the pressure relieving pipe (7) from being blocked, when the filter sheet (62) is blocked, the liquid in the second pipeline (3) is difficult to flow into the pressure relieving pipe (7), so that the internal pressure of the filter box (61) is increased, and at the moment, a second spring (636) is compressed to enable a sliding block (631) to slide in the filter box (61) until an alarm (637) is given out by a pressing button (635), so that a worker is reminded of giving an alarm to maintain;

s3, in the sliding process of the sliding block (631), the third spring (665) pushes the brush holder (662) to move, at the moment, the bristles (663) clean the filter (62), the outer surface of the filter (62) is guaranteed to be clean, liquid in the second pipeline (3) can circulate with the decompression pipe (7), a worker can pull the pull ring (633) back and forth to drive the sliding block (631) to move up and down, at the moment, the sliding block (631) drives the connecting rod (664) to move, so that the bristles (663) can be repeatedly cleaned on the outer surface of the filter (62), the fixing mechanism (64) can replace the filter (62), and the leakage-proof plate (65) is sucked into the filter box (61) when the filter (62) is replaced, so that the liquid is prevented from flowing out randomly;

s4, liquid in the pressure relief pipe (7) flows into the pressure box (81) and the execution sheet (82) to enable the execution sheet (82) to extrude the valve rod (83), at the moment, the valve rod (83) drives the valve core (84) to be attached to the valve cover (9), so that the liquid flow of the first pipeline (2) flowing through the valve body (1) to the second pipeline (3) is changed, the pressure adjusting effect is achieved, the limiting mechanism (87) can enable the valve rod (83) not to deviate in the pressing-down process, and the problem of liquid leakage caused by the fact that the positions of the valve core (84) and the position of the valve cover (9) are not aligned due to long-time work is avoided.