Flow and pressure regulating valve with buffering effect

Abstract

The invention discloses a flow and pressure regulating valve with a buffering effect, and relates to the technical field of flow and pressure regulating valves. Comprising a valve body, a mouse cage, a leakage detection assembly, an adjusting assembly and a filtering assembly, impurities in a medium are filtered through a filtering net on a filtering fan blade, the filtering fan blade is driven to rotate through flowing of the medium to generate centrifugal force, and the impurities are thrown out through the centrifugal force; and the filtered impurities are blocked and guided by the guide strips on the filtering fan blades, so that the impurities are thrown into the collecting tank along the guide strips, and the magnetic rings in the collecting tank adsorb and separate metal chips in the impurities, so that the purposes of filtering, collecting and separating the impurities are achieved. Leakage media are collected through the leakage cavity, the floating plate drives the contact on the supporting piece to extrude the piezoelectric ceramic in the elastic film under the action of buoyancy, buoyancy is generated through the leakage media, then the buoyancy is converted into displacement of the supporting piece, finally, the displacement is converted into an electric signal, and therefore the purpose of leakage detection is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of flow regulating and pressure regulating valves, and in particular to a flow regulating and pressure regulating valve with a buffering effect. Background Art

[0002] The flow and pressure regulating valve is a key device for controlling fluid flow and pressure, and is widely used in water supply, gas supply, petrochemical, electric power and other industries. Its main function is to automatically adjust the valve opening according to the flow and pressure changes of the fluid in the pipeline system to maintain the stable operation of the system. In industrial production, the flow and pressure regulating valve not only needs to maintain a stable flow and pressure, but also needs to cope with complex changes in working conditions, such as fluid characteristics, temperature fluctuations and pressure mutations. Its functional stability is directly related to the system energy efficiency, equipment life and operational safety.

[0003] During operation, when the medium flows through the valve cavity, it will impact the valve body. Long-term impact will cause damage to the valve body and adjacent pipes, especially near the outlet at the end of the valve body, where a large amount of flowing medium will gather, causing this part to be more severely eroded by the flowing medium, making this part prone to corrosion and wear. Once the outlet of the valve body is damaged, the squirrel cage and the valve body cannot be tightly closed, which not only affects the flow and pressure regulation effect, but also causes leakage. In addition, there will be impurities mixed in the flowing medium. When the flowing medium mixed with impurities passes through the valve body, the impurities contained in it will aggravate the wear of the valve body and other parts, and in severe cases, it will cause local blockage or jamming. Summary of the invention

[0004] The object of the present invention is to provide a flow regulating and pressure regulating valve with a buffering effect to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a flow regulating and pressure regulating valve with a buffering effect, comprising a valve body, an adjusting component rotatably installed in the valve body, a driving device installed on the adjusting component, a filter component rotatably installed in the valve body, a squirrel cage rotatably installed on the adjusting component, the squirrel cage is rotatably connected to the valve body, a leakage detection component is installed on the valve body, the leakage detection component is located below the squirrel cage, and the squirrel cage passes through the filter component.

[0006] The flow regulating and pressure regulating valve is externally connected to a control system, and the control system is used to control the entire flow regulating and pressure regulating valve.

[0007] Furthermore, the valve body includes an outer shell and an inner shell, one end of the outer shell is provided with an inlet, the other end of the outer shell is provided with an outlet, a plurality of connecting plates are installed between the outer shell and the inner shell, a flow chamber is formed between the outer shell and the inner shell, an enlarged end is provided on the outer shell, the squirrel cage is slidably connected to the inner shell and the outer shell respectively, the adjusting component is installed in the inner shell, the flow chamber is connected to the inlet, and the leakage detection component is installed at the outlet.

[0008] Both ends of the valve body are connected to medium delivery pipelines, which are respectively connected to the inlet and the outlet. The medium enters from the inlet, passes through the flow chamber, and then passes through the filter component at the expanded end. After filtering and buffering by the filter component, it passes through the squirrel cage and flows out from the outlet.

[0009] Furthermore, a groove is provided in the enlarged end, a magnetic ring is installed in the groove, a collecting groove is provided in the enlarged end, a filter assembly is rotatably installed in the enlarged end, and a plurality of inspection ports are provided on the enlarged end.

[0010] Furthermore, the filter assembly includes an inner ring, the squirrel cage passes through the inner ring, a plurality of filter sectors are installed on the inner ring, a front connecting ring is installed on the filter sector, a rear connecting ring is installed on the filter sector, the front connecting ring and the rear connecting ring are rotatably installed in the enlarged end, and the front connecting ring and the rear connecting ring are both located at the notch of the collecting tank; a filter screen is provided on the filter sector, a plurality of guide strips are installed on the filter sector, and guide grooves are provided on the guide strips.

[0011] When the medium passes through the filter assembly, the filter screen on the filter sector will filter the impurities in the medium, and the medium impacts the surface of the filter sector. The filter sector absorbs part of the impact force and converts it into mechanical energy of its own rotation. The filter sector rotates in the enlarged end through the front connecting ring and the rear connecting ring. The centrifugal force generated by the rotation will drive the impurities filtered off the surface of the filter sector to be thrown out, and the guide strips on the filter sector will block part of the impurities that are thrown out. The blocked impurities enter the guide groove and are thrown into the collecting groove along the guide strip under the action of centrifugal force. The magnetic ring in the collecting groove can absorb and separate the metal chips in the impurities, thereby achieving the purpose of impurity filtering, collection and separation, and avoiding blockage or jamming of the flow and pressure regulating valve; at the same time, the filter sector will convert and absorb the impact force of the medium, alleviate the impact of the medium on the valve body, protect the valve body, avoid the entire flow and pressure regulating valve from being damaged by impact for a long time, and improve the service life of the flow and pressure regulating valve.

[0012] Due to the enlarged design of the enlarged end, when there are impurities in the collection tank of the enlarged end, the normal flow rate of the medium will not be reduced.

[0013] The staff regularly observes the internal impurities through the inspection port on the expanded end. When there are too many impurities, clean water is input into the inspection port to flush the impurities in the collection tank, and then the metal chips adsorbed on the magnetic ring are recovered with tools.

[0014] Furthermore, the leakage detection component includes a detection shell, which is installed at the outflow port, a sliding probe is slidably installed on the detection shell, a detection spring is installed between the sliding probe and the detection shell, a detection rod is slidably installed in the detection shell, a floating plate is installed at the top of the detection rod, a support plate is installed at the bottom of the detection rod, a contact is installed on the support plate, an elastic membrane is installed in the detection shell, and piezoelectric ceramics are installed between the elastic membranes.

[0015] Furthermore, a seepage chamber is formed between the sliding probe and the detection shell, the floating plate is located in the seepage chamber, and a seepage channel is provided on the sliding probe, and the seepage channel is communicated with the seepage chamber.

[0016] When the flow regulating and pressure regulating valve is closed, the plugging cylinder is located at the outflow port, and the flow cylinder completely passes through the outflow port. At this time, the magnetic block at the bottom of the flow cylinder is located above the leakage detection component, and the magnetic block adsorbs the top of the sliding probe. When the sliding probe is adsorbed, it overcomes the tension of the detection spring and slides relative to the detection shell. The detection spring is stretched, and the volume of the seepage chamber increases, so that the leakage detection component automatically opens following the closing of the flow regulating and pressure regulating valve. When leakage occurs between the squirrel cage and the valve body, the medium flowing out of the bottom of the outflow port enters the leakage chamber through the seepage channel, and the medium generates buoyancy on the floating plate. Under the action of buoyancy, the floating plate drives the support plate upward through the detection rod. When the seepage volume is too large, the amount of medium in the seepage chamber increases, and the buoyancy of the floating plate increases. The floating plate drives the support plate to move upward to the piezoelectric ceramic position. The contacts on the support plate squeeze the piezoelectric ceramic in the elastic film. The piezoelectric ceramic generates an electric charge after being compressed, and the electrical signal is transmitted to the control system. After receiving the electrical signal, the control system sends a maintenance alarm to the staff, thereby achieving the purpose of leakage detection; When the flow and pressure regulating valve is opened, as the squirrel cage moves, the magnetic block slides away from the sliding probe, and the sliding probe loses its magnetic influence and retracts under the tension of the detection spring. The detection housing and the sliding probe approach each other, and the volume of the seepage chamber is compressed and reduced. When the sliding probe retracts, the medium inside is squeezed and squeezed out from the seepage channel. The floating plate is pressed to the bottom of the seepage chamber by the sliding probe and cannot move, thereby achieving the purpose of the leakage detection component automatically closing as the flow and pressure regulating valve is opened.

[0017] Furthermore, the regulating assembly includes a valve shaft, which is rotatably mounted in the inner shell body. The valve shaft passes through the inner shell body and the outer shell body respectively. A driving device is installed at one end of the valve shaft, a crank is installed on the valve shaft, a connecting rod is rotatably mounted on the crank, a driving frame is rotatably mounted at one end of the connecting rod, and a squirrel cage is installed on the driving frame.

[0018] The driving device is used to drive the valve shaft to rotate.

[0019] The driving device is opened according to the adjustment demand, the driving device drives the valve shaft to rotate, the valve shaft drives the crank to rotate, the crank drives the connecting rod to move, and the connecting rod drives the squirrel cage to slide in the valve body through the driving frame. When the blocking cylinder on the squirrel cage is located at the outflow port, the outflow port is blocked, and the flow regulating and pressure regulating valve is in a closed state; when the flow cylinder on the squirrel cage is located at the outflow port, the flow regulating and pressure regulating valve is in an open state, and the medium can pass through the flow hole on the flow cylinder after being filtered by the filter assembly and discharged from the outflow port; the sliding of the flow cylinder is controlled by the valve shaft, and when the flow cylinder moves forward and passes through the outflow port, the effective water outlet area of ​​the flow cylinder inside the valve body is reduced, and the flow of the flow regulating and pressure regulating valve is reduced. On the contrary, the effective water outlet area of ​​the flow cylinder inside the valve body is increased, and the flow of the flow regulating and pressure regulating valve is larger. The driving device adjusts the position of the squirrel cage through the valve shaft, thereby achieving the function of regulating and closing the flow of the flow regulating and pressure regulating valve.

[0020] Furthermore, the squirrel cage includes a blocking cylinder, which is installed on the driving frame. A flow cylinder is installed at one end of the blocking cylinder. The flow cylinder is provided with a plurality of flow holes. A magnetic block is installed in the flow cylinder. Both the flow cylinder and the blocking cylinder are slidably connected to the inner shell and the outer shell, and both the flow cylinder and the blocking cylinder pass through the inner ring.

[0021] The top of the sliding probe is made of absorbent material.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. Use the filter on the filter sector to filter the impurities in the medium, and drive the filter sector to rotate through the flow of the medium to generate centrifugal force. The centrifugal force causes the impurities to be thrown out, and then the guide strips on the filter sector are used to block and guide the filtered impurities, so that the impurities are thrown into the collection tank along the guide strips. The magnetic ring in the collection tank absorbs and separates the metal chips in the impurities, thereby achieving the purpose of impurity filtering, collection and separation, and avoiding blockage or jamming of the flow and pressure regulating valve.

[0023] 2. The filter fan is used for buffering to alleviate the impact of some media on the valve body, thereby protecting the valve body and preventing the entire flow and pressure regulating valve from being damaged by long-term impact, thereby increasing the service life of the flow and pressure regulating valve. Through the expansion design of the expansion end, when there are impurities in the collection tank of the expansion end, the normal flow of the medium will not be reduced.

[0024] 3. When leakage occurs between the squirrel cage and the valve body, the leakage medium is collected through the leakage chamber, so that the floating plate drives the contact on the support plate to squeeze the piezoelectric ceramics in the elastic membrane under the action of buoyancy, and the buoyancy is generated by the leakage medium, which is then converted into the displacement of the support plate, and finally the displacement is converted into an electrical signal, thereby achieving the purpose of leakage detection.

[0025] 4. The squirrel cage is used to drive the magnetic block to slide away from or approach the sliding probe. The volume of the seepage chamber is changed by the magnetic block adsorbing and disconnecting the sliding probe, so that the leakage detection component can automatically close or open as the flow and pressure regulating valve opens.

[0026] 5. The valve shaft is used to drive the crank to rotate, and the crank drives the squirrel cage to slide in the valve body, changing the effective water outlet area of ​​the squirrel cage, thereby achieving the function of regulating and closing the flow of the flow and pressure regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall stereogram of the flow regulating and pressure regulating valve of the present invention; Figure 2 It is a three-dimensional diagram of the flow regulating and pressure regulating valve of the present invention; Figure 3 is a three-dimensional diagram of the valve body of the present invention; Figure 4 The present invention is a three-dimensional squirrel cage and an adjustment component Figure 1 ; Figure 5 The present invention is a three-dimensional squirrel cage and an adjustment component Figure 2 ; Figure 6 The three-dimensional filter assembly of the present invention Figure 1 ; Figure 7 The three-dimensional filter assembly of the present invention Figure 2 ; Figure 8 A three-dimensional diagram of the filter sector of the present invention; Fig. 9 For the present invention Figure 4 A partial enlarged view of the middle A area; Fig.10 is a three-dimensional diagram of the leakage detection assembly of the present invention; Fig.11 For the present invention Fig.10 A partial enlarged view of area B.

[0028] In the figure: 1, valve body; 2, squirrel cage; 3, leakage detection assembly; 4, adjustment assembly; 5, filter assembly; 11, outer shell; 12, inner shell; 13, expansion end; 14, flow chamber; 15, connecting plate; 16, inlet; 17, outlet; 131, magnetic ring; 132, collecting tank; 133, groove; 41, valve shaft; 42, crank; 43, connecting rod; 44, driving frame; 21, plugging cylinder; 22, flow cylinder; 23. Flow hole; 24. Magnetic block; 51. Front connecting ring; 52. Rear connecting ring; 53. Inner ring; 54. Filter fan; 541. Filter screen; 542. Guide strip; 5421. Guide groove; 31. Detection housing; 32. Sliding probe; 33. Seepage chamber; 34. Detection spring; 35. Floating plate; 36. Support plate; 37. Piezoelectric ceramic; 38. Elastic membrane; 39. Detection rod; 321. Seepage channel; 361. Contact. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 11 As shown, the present invention provides a technical solution of a flow regulating and pressure regulating valve with a buffering effect: comprising a valve body 1, an adjusting component 4 is rotatably installed in the valve body 1, a driving device is installed on the adjusting component 4, a filtering component 5 is rotatably installed in the valve body 1, a cage 2 is rotatably installed on the adjusting component 4, the cage 2 is rotatably connected to the valve body 1, a leakage detection component 3 is installed on the valve body 1, the leakage detection component 3 is located below the cage 2, and the cage 2 passes through the filtering component 5. The flow regulating and pressure regulating valve is externally connected to a control system, and the control system is used to control the entire flow regulating and pressure regulating valve.

[0031] The valve body 1 comprises an outer shell 11 and an inner shell 12. An inlet 16 is provided at one end of the outer shell 11, and an outlet 17 is provided at the other end of the outer shell 11. A plurality of connecting plates 15 are installed between the outer shell 11 and the inner shell 12. A flow chamber 14 is formed between the outer shell 11 and the inner shell 12. An enlarged end 13 is provided on the outer shell 11. The squirrel cage 2 is slidably connected with the inner shell 12 and the outer shell 11 respectively. The regulating component 4 is installed in the inner shell 12. The flow chamber 14 is connected with the inlet 16. The leakage detection component 3 is installed at the outlet 17. Both ends of the valve body 1 are connected with medium delivery pipelines, which are connected with the inlet 16 and the outlet 17 respectively. The medium enters from the inlet 16, passes through the flow chamber 14, passes through the filter component 5 at the enlarged end 13, and flows out from the outlet 17 after filtering and buffering by the filter component 5.

[0032] A groove 133 is provided in the enlarged end 13 , a magnetic ring 131 is installed in the groove 133 , a collecting groove 132 is provided in the enlarged end 13 , a filter assembly 5 is rotatably installed in the enlarged end 13 , and a plurality of inspection ports are provided on the enlarged end 13 .

[0033] Due to the enlarged design of the enlarged end, when impurities exist in the collecting groove 132 of the enlarged end 13, the normal flow rate of the medium will not be reduced.

[0034] The filter assembly 5 includes an inner ring 53, the squirrel cage 2 passes through the inner ring 53, a plurality of filter sectors 54 are installed on the inner ring 53, a front connecting ring 51 is installed on the filter sector 54, a rear connecting ring 52 is installed on the filter sector 54, the front connecting ring 51 and the rear connecting ring 52 are rotatably installed in the enlarged end 13, and the front connecting ring 51 and the rear connecting ring 52 are both located at the notch of the collecting tank 132; a filter screen 541 is provided on the filter sector 54, a plurality of guide strips 542 are installed on the filter sector 54, and a guide groove 5421 is provided on the guide strip 542.

[0035] The leakage detection assembly 3 includes a detection housing 31, which is mounted on the outflow port 17, a sliding probe 32 is slidably mounted on the detection housing 31, a detection spring 34 is mounted between the sliding probe 32 and the detection housing 31, a detection rod 39 is slidably mounted in the detection housing 31, a floating plate 35 is mounted on the top of the detection rod 39, a supporting piece 36 is mounted on the bottom of the detection rod 39, a contact 361 is mounted on the supporting piece 36, an elastic film 38 is mounted in the detection housing 31, and piezoelectric ceramics 37 are mounted between the elastic films 38. The top of the sliding probe 32 is made of an adsorbable material.

[0036] A seepage chamber 33 is formed between the sliding probe 32 and the detection housing 31 . The floating plate 35 is located in the seepage chamber 33 . A seepage channel 321 is provided on the sliding probe 32 . The seepage channel 321 is communicated with the seepage chamber 33 .

[0037] The regulating assembly 4 includes a valve shaft 41, which is rotatably mounted in the inner housing 12, and the valve shaft 41 passes through the inner housing 12 and the outer housing 11 respectively. A driving device is mounted on one end of the valve shaft 41, a crank 42 is mounted on the valve shaft 41, a connecting rod 43 is rotatably mounted on the crank 42, a driving frame 44 is rotatably mounted on one end of the connecting rod 43, and a squirrel cage 2 is mounted on the driving frame 44. The driving device is used to drive the valve shaft 41 to rotate.

[0038] The squirrel cage 2 includes a blocking cylinder 21, which is installed on the driving frame 44. A flow cylinder 22 is installed at one end of the blocking cylinder 21. The flow cylinder 22 is provided with a plurality of flow holes 23. A magnetic block 24 is installed in the flow cylinder 22. The flow cylinder 22 and the blocking cylinder 21 are both slidably connected to the inner shell 12 and the outer shell 11. The flow cylinder 22 and the blocking cylinder 21 both pass through the inner ring 53.

[0039] The working principle of the present invention is as follows: the driving device is opened according to the adjustment demand, the driving device drives the valve shaft 41 to rotate, the valve shaft 41 drives the crank 42 to rotate, the crank 42 drives the connecting rod 43 to move, and the connecting rod 43 drives the squirrel cage 2 to slide in the valve body 1 through the driving frame 44. When the blocking cylinder 21 on the squirrel cage 2 is located at the outflow port 17, the outflow port 17 is blocked, and the flow regulating and pressure regulating valve is in a closed state; when the flow cylinder 22 on the squirrel cage 2 is located at the outflow port 17, the flow regulating and pressure regulating valve is in an open state, and the medium can pass through the flow hole 23 on the flow cylinder 22 and be discharged from the outflow port 17 after being filtered by the filter assembly 5; the sliding of the flow cylinder 22 is controlled by the valve shaft 41. When the flow cylinder 22 moves forward and passes through the outflow port 17, the effective water outlet area of ​​the flow cylinder 22 inside the valve body 1 is reduced, and the flow rate of the flow regulating and pressure regulating valve is reduced. On the contrary, the effective water outlet area of ​​the flow cylinder 22 inside the valve body 1 is increased, and the flow rate of the flow regulating and pressure regulating valve is larger. The driving device adjusts the position of the squirrel cage 2 through the valve shaft 41, thereby achieving the function of regulating and closing the flow of the flow and pressure regulating valve.

[0040] When the flow regulating and pressure regulating valve is closed, the sealing cylinder 21 is located at the outflow port 17, and the flow cylinder 22 completely passes through the outflow port 17. At this time, the magnetic block 24 at the bottom of the flow cylinder 22 is located above the leakage detection component 3, and the magnetic block 24 adsorbs the top of the sliding probe 32. When the sliding probe 32 is adsorbed, it overcomes the pulling force of the detection spring 34 and slides relative to the detection housing 31. The detection spring 34 is elongated. At this time, the volume of the seepage chamber 33 increases, so that the leakage detection component 3 automatically opens when the flow regulating and pressure regulating valve is closed. When leakage occurs between the squirrel cage 2 and the valve body 1, the medium flowing out of the bottom of the outflow port 17 enters the leakage chamber through the seepage channel 321, and the medium generates buoyancy on the floating plate 35. Under the action of the buoyancy, the floating plate 35 drives the supporting plate 36 to move upward through the detection rod 39. When the seepage volume is too large, the medium in the seepage chamber 33 increases, and the buoyancy of the floating plate 35 increases. The floating plate 35 drives the supporting plate 36 to move upward to the position of the piezoelectric ceramic 37. The contact 361 on the supporting plate 36 squeezes the piezoelectric ceramic 37 in the elastic film 38. The piezoelectric ceramic 37 generates an electric charge after being compressed, and the electric signal is transmitted to the control system. After receiving the electric signal, the control system sends a maintenance alarm to the staff, thereby achieving the purpose of leakage detection; When the flow regulating and pressure regulating valve is opened, as the squirrel cage 2 moves, the magnetic block 24 slides away from the sliding probe 32, and the sliding probe 32 loses its magnetic influence and retracts under the pulling force of the detection spring 34. The detection housing 31 and the sliding probe 32 approach each other, and the volume of the seepage chamber 33 is compressed and reduced. When the sliding probe 32 retracts, the medium inside is squeezed, and the medium in the seepage chamber 33 is squeezed out from the seepage channel 321. The floating plate 35 is pressed to the bottom of the seepage chamber 33 by the sliding probe 32 and cannot move, thereby achieving the purpose of the leakage detection component 3 automatically closing as the flow regulating and pressure regulating valve is opened.

[0041] When the medium passes through the filter assembly 5, the filter screen 541 on the filter fan 54 will filter the impurities in the medium, and the medium will impact on the surface of the filter fan 54, and the filter fan 54 will absorb part of the impact force and convert it into mechanical energy of its own rotation. The filter fan 54 rotates in the enlarged end 13 through the front connecting ring 51 and the rear connecting ring 52. The centrifugal force generated by the rotation will drive the impurities filtered on the surface of the filter fan 54 to be thrown out, and the guide strip 542 on the filter fan 54 will block part of the impurities that are thrown out, and the blocked impurities It enters the guide groove 5421 and is thrown into the collecting groove 132 along the guide bar 542 under the action of centrifugal force. The magnetic ring in the collecting groove 132 can absorb and separate the metal chips in the impurities, thereby achieving the purpose of impurity filtering, collection and separation, and avoiding blockage or jamming of the flow and pressure regulating valve; at the same time, the filter fan 54 will transform and absorb the impact force of the medium, alleviate the impact of the medium on the valve body 1, and protect the valve body 1, avoiding the entire flow and pressure regulating valve from being damaged by impact for a long time, and improving the service life of the flow and pressure regulating valve.

[0042] The staff regularly observes the internal impurities through the inspection port on the enlarged end 13. When there are too many impurities, clean water is input into the inspection port to flush the impurities in the collection tank 132, and then the metal chips adsorbed on the magnetic ring 131 are recovered with tools.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A flow regulating and pressure regulating valve with a buffering effect, characterized in that: The flow regulating and pressure regulating valve comprises a valve body (1), an adjusting component (4) is rotatably mounted in the valve body (1), a driving device is mounted on the adjusting component (4), a filtering component (5) is rotatably mounted in the valve body (1), a squirrel cage (2) is rotatably mounted on the adjusting component (4), the squirrel cage (2) is rotatably connected to the valve body (1), a leakage detection component (3) is mounted on the valve body (1), the leakage detection component (3) is located below the squirrel cage (2), and the squirrel cage (2) passes through the filtering component (5).

2. A flow regulating and pressure regulating valve with buffering effect according to claim 1, characterized in that: The valve body (1) comprises an outer shell (11) and an inner shell (12); one end of the outer shell (11) is provided with an inlet (16); the other end of the outer shell (11) is provided with an outlet (17); a plurality of connecting plates (15) are installed between the outer shell (11) and the inner shell (12); a flow chamber (14) is formed between the outer shell (11) and the inner shell (12); an enlarged end (13) is provided on the outer shell (11); the squirrel cage (2) is slidably connected to the inner shell (12) and the outer shell (11), respectively; the regulating assembly (4) is installed in the inner shell (12); the flow chamber (14) is communicated with the inlet (16); and the leakage detection assembly (3) is installed at the outlet (17).

3. A flow regulating and pressure regulating valve with buffering effect according to claim 2, characterized in that: A groove (133) is provided in the enlarged end (13), a magnetic ring (131) is installed in the groove (133), a collecting groove (132) is provided in the enlarged end (13), a filter assembly (5) is rotatably installed in the enlarged end (13), and a plurality of inspection ports are provided on the enlarged end (13).

4. A flow regulating and pressure regulating valve with buffering effect according to claim 3, characterized in that: The filter assembly (5) comprises an inner ring (53), the squirrel cage (2) passes through the inner ring (53), a plurality of filter segments (54) are mounted on the inner ring (53), a front connecting ring (51) is mounted on the filter segment (54), a rear connecting ring (52) is mounted on the filter segment (54), the front connecting ring (51) and the rear connecting ring (52) are rotatably mounted in the enlarged end (13), the front connecting ring (51) and the rear connecting ring (52) are both located at the notch of the collecting groove (132); a filter screen (541) is provided on the filter segment (54), a plurality of guide bars (542) are mounted on the filter segment (54), and a guide groove (5421) is provided on the guide bar (542).

5. The flow regulating and pressure regulating valve with buffering effect according to claim 2, characterized in that: The leakage detection assembly (3) comprises a detection housing (31), the detection housing (31) being mounted on the outflow port (17), a sliding probe (32) being slidably mounted on the detection housing (31), a detection spring (34) being mounted between the sliding probe (32) and the detection housing (31), a detection rod (39) being slidably mounted in the detection housing (31), a floating plate (35) being mounted on the top end of the detection rod (39), a supporting plate (36) being mounted on the bottom end of the detection rod (39), a contact (361) being mounted on the supporting plate (36), an elastic membrane (38) being mounted in the detection housing (31), and piezoelectric ceramics (37) being mounted between the elastic membranes (38).

6. The flow regulating and pressure regulating valve with buffering effect according to claim 5, characterized in that: A seepage chamber (33) is formed between the sliding probe (32) and the detection housing (31), the floating plate (35) is located in the seepage chamber (33), and a seepage channel (321) is provided on the sliding probe (32), wherein the seepage channel (321) is in communication with the seepage chamber (33).

7. The flow regulating and pressure regulating valve with buffering effect according to claim 4, characterized in that: The regulating assembly (4) comprises a valve shaft (41), the valve shaft (41) being rotatably mounted in the inner housing (12), the valve shaft (41) respectively penetrating the inner housing (12) and the outer housing (11), a driving device being mounted on one end of the valve shaft (41), a crank (42) being mounted on the valve shaft (41), a connecting rod (43) being rotatably mounted on the crank (42), a driving frame (44) being rotatably mounted on one end of the connecting rod (43), and a squirrel cage (2) being mounted on the driving frame (44).

8. The flow regulating and pressure regulating valve with buffering effect according to claim 7, characterized in that: The squirrel cage (2) comprises a plugging cylinder (21), wherein the plugging cylinder (21) is mounted on a driving frame (44), a flow cylinder (22) is mounted on one end of the plugging cylinder (21), a plurality of flow holes (23) are provided on the flow cylinder (22), a magnetic block (24) is mounted in the flow cylinder (22), the flow cylinder (22) and the plugging cylinder (21) are both slidably connected to the inner shell (12) and the outer shell (11), and the flow cylinder (22) and the plugging cylinder (21) both penetrate the inner ring (53).

9. The flow regulating and pressure regulating valve with buffering effect according to claim 5, characterized in that: The top end of the sliding probe (32) is made of an adsorbable material.

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