A flow and pressure regulating valve with a buffering effect

Abstract

The present invention discloses a flow and pressure regulating valve with a buffering effect, which relates to the technical field of flow and pressure regulating valves. It includes a valve body, a squirrel cage, a leakage detection component, an adjustment component and a filtering component. In the present invention, the filter screen on the filter fan is used to filter impurities in the medium, and the flow of the medium drives the filter fan to rotate to generate centrifugal force, which causes the impurities to be thrown out. Then, the guide strips on the filter fan 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 adsorbs and separates the metal chips in the impurities, so as to achieve the purpose of impurity filtration, collection and separation. The leakage chamber is used to collect the leaked medium, so that the floating plate drives the contact on the support piece to squeeze the piezoelectric ceramic in the elastic film under the action of buoyancy. The buoyancy is generated by the leaked medium, and then the buoyancy is converted into the displacement of the support piece, and finally the displacement is converted into an electrical signal, so as to achieve the purpose of leakage detection.

Description

Technical Field

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

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

[0003] During the working process, when the medium flows through the valve cavity, it will impact the valve body. Long - term impact will damage the valve body and adjacent pipelines. Especially near the fluid outlet at the end of the valve body, a large amount of flowing medium will converge, making the erosion of this part by the flowing medium more severe, resulting in easy corrosion and wear of this part. Once the fluid outlet of the valve body is damaged, the cage and the valve body cannot be tightly closed, which not only affects the flow - regulating and pressure - regulating effect but also causes leakage. Moreover, the flowing medium will be mixed with impurities. When the flowing medium mixed with impurities passes through the valve body, the impurities contained will exacerbate the wear of components such as the valve body, and in severe cases, it will cause local blockage or jamming. Summary of the Invention

[0004] The purpose 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 purpose, the present invention provides the following technical solution: A flow - regulating and pressure - regulating valve with a buffering effect, including a valve body. An adjusting assembly is rotatably installed in the valve body, a driving device is installed on the adjusting assembly, a filtering assembly is rotatably installed in the valve body, a cage is rotatably installed on the adjusting assembly, the cage is rotatably connected to the valve body, a leakage detection assembly is installed on the valve body, the leakage detection assembly is located below the cage, and the cage penetrates through the filtering assembly.

[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 a fluid inlet, the other end of the outer shell is provided with a fluid outlet. A number of connecting plates are installed between the outer shell and the inner shell. A flow cavity is formed between the outer shell and the inner shell. The outer shell is provided with an enlarged end. The cage is slidably connected to both the inner shell and the outer shell. The adjusting assembly is installed inside the inner shell. The flow cavity is communicated with the fluid inlet. The leakage detection assembly is installed at the fluid outlet.

[0008] Both ends of the valve body are connected with medium conveying pipelines, which are respectively communicated with the inlet and the outlet. The medium enters from the inlet, passes through the flow chamber, then passes through the filter assembly at the enlarged end. After being filtered and buffered by the filter assembly, it passes through the squirrel cage and flows away 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 number of maintenance openings are provided on the enlarged end.

[0010] Furthermore, the filter assembly includes an inner ring. The squirrel cage penetrates through the inner ring. A number of filter fan blades are installed on the inner ring. A front connecting ring is installed on the filter fan blade, and a rear connecting ring is installed on the filter fan blade. The front connecting ring and the rear connecting ring are rotatably installed in the enlarged end, and both the front connecting ring and the rear connecting ring are located at the notch of the collecting groove; a filter screen is provided on the filter fan blade, and a number of guide bars are installed on the filter fan blade, and guide grooves are provided on the guide bars.

[0011] When the medium passes through the filter assembly, the filter screen on the filter fan blade will filter the impurities in the medium. Moreover, when the medium impacts on the surface of the filter fan blade, the filter fan blade absorbs part of the impact force and converts it into the mechanical energy of its own rotation. The filter fan blade rotates in the enlarged end through the front connecting ring and the rear connecting ring, and the centrifugal force generated by the rotation will drive the impurities filtered on the surface of the filter fan blade to be thrown out. The guide bars on the filter fan blade will block part of the thrown-out impurities, and the blocked impurities enter the guide grooves and are thrown into the collecting groove along the guide bars under the action of centrifugal force. The magnetic ring in the collecting groove can adsorb and separate the metal chips in the impurities, so as to achieve the purpose of impurity filtration, collection and separation, and avoid the blockage or jamming of the flow regulating and pressure regulating valve; at the same time, the filter fan blade will convert and absorb the impact force of the medium, relieve the impact of the medium on the valve body, protect the valve body, avoid the whole flow regulating and pressure regulating valve being damaged by long-term impact, and improve the service life of the flow regulating and pressure regulating valve.

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

[0013] The staff regularly observes the internal impurity situation through the maintenance opening on the enlarged end. When there are too many impurities, clean water is input into the maintenance opening to wash the impurities in the collecting groove, and then the metal chips adsorbed on the magnetic ring are recovered with tools.

[0014] Furthermore, the leakage detection assembly includes a detection housing, which is installed at the outlet. A sliding probe is slidably installed on the detection housing. A detection spring is installed between the sliding probe and the detection housing. A detection rod is slidably installed in the detection housing. A floating plate is installed at the top of the detection rod, a support piece is installed at the bottom of the detection rod, a contact is installed on the support piece, and a diaphragm is installed in the detection housing, and a piezoelectric ceramic is installed between the diaphragms.

[0015] Furthermore, a seepage chamber is formed between the sliding probe and the detection housing. The floating plate is located in the seepage chamber. The sliding probe is provided with seepage channels, and the seepage channels communicate with the seepage chamber.

[0016] When the flow regulating and pressure regulating valve is closed, the plugging cylinder is located at the flow outlet, and the flow cylinder completely penetrates through the flow outlet. At this time, the magnet at the bottom of the flow cylinder is located above the leakage detection component, and the magnet adsorbs the top end of the sliding probe. When the sliding probe is adsorbed, it overcomes the tension of the detection spring and slides relative to the detection housing, and the detection spring is stretched. At this time, the volume of the seepage chamber increases, achieving the purpose that the leakage detection component automatically opens following the closing of the flow regulating and pressure regulating valve. When there is a leakage between the squirrel cage and the valve body, the medium flowing out from the bottom of the flow outlet enters the leakage chamber through the seepage channels. The medium generates buoyancy on the floating plate, and under the action of the buoyancy, the floating plate drives the support piece to move upward through the detection rod. When the seepage flow is too large, the medium in the seepage chamber increases, the buoyancy on the floating plate becomes larger, and the floating plate drives the support piece to move upward to the position of the piezoelectric ceramic. The contact on the support piece presses the piezoelectric ceramic in the elastic film. After being pressed, the piezoelectric ceramic generates electric charges, and the electric signals are transmitted to the control system. After receiving the electric signals, the control system sends a maintenance alarm to the staff, thereby achieving the purpose of leakage detection.

[0017] When the flow regulating and pressure regulating valve is opened, as the squirrel cage moves, the magnet slides away from the sliding probe. The sliding probe loses the influence of the magnetic force and retracts under the action of the tension of the detection spring. The detection housing approaches the sliding probe, and the volume of the seepage chamber is compressed and reduced. When the sliding probe retracts, it squeezes the internal medium, and the medium in the seepage chamber is extruded from the seepage channels. The floating plate is pressed by the sliding probe to the bottom of the seepage chamber and cannot move, thereby achieving the purpose that the leakage detection component automatically closes following the opening of the flow regulating and pressure regulating valve.

[0018] Furthermore, the adjusting component includes a valve shaft. The valve shaft is rotatably installed inside the inner housing. The valve shaft penetrates through the inner housing and the outer housing 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 installed on the crank. One end of the connecting rod is rotatably installed with a driving frame, and a squirrel cage is installed on the driving frame.

[0019] The driving device is used to drive the valve shaft to rotate.

[0020] The driving device is turned on according to the adjustment requirement. 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 flow outlet, the flow outlet is blocked, and the flow regulating and pressure regulating valve is in the closed state; when the flow cylinder on the squirrel cage is located at the flow outlet, the flow regulating and pressure regulating valve is in the open state. After the medium is filtered by the filtering component, it can pass through the flow holes on the flow cylinder and be discharged from the flow outlet; by controlling the sliding of the flow cylinder through the valve shaft, when the flow cylinder moves forward and passes through the flow outlet, the effective water outlet area of the flow cylinder inside the valve body decreases, and the flow of the flow regulating and pressure regulating valve decreases. On the contrary, the effective water outlet area of the flow cylinder inside the valve body increases, 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, so as to achieve the functions of regulating the flow and closing the flow regulating and pressure regulating valve.

[0021] Further, the squirrel cage includes a blocking cylinder, the blocking cylinder is installed on the driving frame, a flow cylinder is installed at one end of the blocking cylinder, a plurality of flow holes are provided on the flow cylinder, a magnetic block is installed inside the flow cylinder, and both the flow cylinder and the blocking cylinder are slidably connected to the inner housing and the outer housing, and both the flow cylinder and the blocking cylinder penetrate through the inner ring.

[0022] The top end of the sliding probe is made of an adsorbable material.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The filter screen on the filter fan is used to filter the impurities in the medium, and the rotation of the filter fan driven by the flow of the medium generates centrifugal force, which causes the impurities to be thrown out. Then, the guide strips on the filter fan 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 adsorbs and separates the metal chips in the impurities, so as to achieve the purposes of impurity filtration, collection and separation, and avoid blockage or jamming of the flow regulating and pressure regulating valve.

[0025] 2. Buffer through the filter fan to relieve the impact of part of the medium on the valve body, protect the valve body, avoid damage to the entire flow regulating and pressure regulating valve due to long-term impact, and improve the service life of the flow regulating and pressure regulating valve. Through the enlarged design of the enlarged end, when there are impurities in the collection tank of the enlarged end, the normal flow of the medium will not be reduced.

[0026] 3. When leakage occurs between the squirrel cage and the valve body, the leakage chamber collects the leaked medium, so that the floating plate drives the contact on the support piece to squeeze the piezoelectric ceramic in the elastic film under the action of buoyancy, generates buoyancy by using the leaked medium, then converts the buoyancy into the displacement of the support piece, and finally converts the displacement into an electrical signal, so as to achieve the purpose of leakage detection.

[0027] 4. The squirrel cage drives the magnetic block to slide away from or close to the sliding probe. By the adsorption and disconnection of the magnetic block to the sliding probe, the volume of the seepage chamber is changed, so as to achieve the purpose that the leakage detection component automatically follows the opening and closing or closing and opening of the flow regulating and pressure regulating valve.

[0028] 5. The valve shaft drives 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, so as to achieve the functions of flow regulation and closing of the flow regulating and pressure regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall three-dimensional view of the flow regulating and pressure regulating valve of the present invention;

[0030] Figure 2 It is a three-dimensional view of the flow regulating and pressure regulating valve of the present invention;

[0031] Figure 3 It is a three-dimensional view of the valve body of the present invention;

[0032] Figure 4 It is a three-dimensional Figure 1 ;

[0033] Figure 5 It is a three-dimensional Figure 2 ;

[0034] Figure 6 It is a three-dimensional Figure 1 ;

[0035] Figure 7 It is a three-dimensional Figure 2 ;

[0036] Figure 8 It is a three-dimensional view of the filter blade of the present invention;

[0037] Figure 9 It is of the present invention Figure 4 Local enlarged view of area A;

[0038] Figure 10 It is a three-dimensional view of the leakage detection component of the present invention;

[0039] Figure 11 It is of the present invention Figure 10 Local enlarged view of area B.

[0040] In the figure: 1. Valve body; 2. Squirrel cage; 3. Leakage detection component; 4. Adjustment component; 5. Filter component; 11. Outer housing; 12. Inner housing; 13. Enlarged end; 14. Flow chamber; 15. Connecting plate; 16. Inlet; 17. Outlet; 131. Magnetic ring; 132. Collection groove; 133. Groove; 41. Valve shaft; 42. Crank; 43. Connecting rod; 44. Driving frame; 21. Sealing cylinder; 22. Flow cylinder; 23. Flow hole; 24. Magnet; 51. Front connecting ring; 52. Rear connecting ring; 53. Inner ring; 54. Filter blade; 541. Filter screen; 542. Guide bar; 5421. Guide groove; 31. Detection housing; 32. Sliding probe; 33. Seepage chamber; 34. Detection spring; 35. Floating plate; 36. Support piece; 37. Piezoelectric ceramic; 38. Elastic film; 39. Detection rod; 321. Seepage pore channel; 361. Contact head. Detailed implementation mode

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0042] As Figures 1 - 11 shown, the present invention provides a technical solution for a flow and pressure regulating valve with a buffering effect: including a valve body 1, an adjustment component 4 is rotatably installed in the valve body 1, a driving device is installed on the adjustment component 4, a filter component 5 is rotatably installed in the valve body 1, a squirrel cage 2 is rotatably installed on the adjustment component 4, the squirrel 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 squirrel cage 2, and the squirrel cage 2 penetrates through the filter component 5. The flow and pressure regulating valve is externally connected to a control system, and the control system is used to control the entire flow and pressure regulating valve.

[0043] The valve body 1 includes an outer housing 11 and an inner housing 12. An inlet 16 is provided at one end of the outer housing 11, an outlet 17 is provided at the other end of the outer housing 11. A plurality of connecting plates 15 are installed between the outer housing 11 and the inner housing 12. A flow chamber 14 is formed between the outer housing 11 and the inner housing 12. An enlarged end 13 is provided on the outer housing 11. The squirrel cage 2 is slidably connected to both the inner housing 12 and the outer housing 11. The adjustment component 4 is installed in the inner housing 12. The flow chamber 14 is communicated 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 conveying pipelines, and the pipelines are respectively communicated with the inlet 16 and the outlet 17. The medium enters from the inlet 16, passes through the filter component 5 at the enlarged end 13 after passing through the flow chamber 14, and flows away from the outlet 17 after being filtered and buffered by the filter component 5.

[0044] The enlarged end 13 is provided with a groove 133 inside, a magnetic ring 131 is installed in the groove 133, a collection groove 132 is provided inside the enlarged end 13, a filtering assembly 5 is rotatably installed inside the enlarged end 13, and a number of inspection openings are provided on the enlarged end 13.

[0045] Due to the enlarged design of the enlarged end, when there are impurities in the collection groove 132 of the enlarged end 13, the normal flow rate of the medium will not be reduced accordingly.

[0046] The filtering assembly 5 includes an inner ring 53, the cage 2 passes through the inner ring 53, a number of filtering fan blades 54 are installed on the inner ring 53, a front connecting ring 51 is installed on the filtering fan blade 54, a rear connecting ring 52 is installed on the filtering fan blade 54, the front connecting ring 51 and the rear connecting ring 52 are rotatably installed inside the enlarged end 13, and both the front connecting ring 51 and the rear connecting ring 52 are located at the notch of the collection groove 132; a filter screen 541 is provided on the filtering fan blade 54, a number of guide bars 542 are installed on the filtering fan blade 54, and guide grooves 5421 are provided on the guide bars 542.

[0047] The leakage detection assembly 3 includes a detection housing 31, the detection housing 31 is installed at the outflow port 17, a sliding probe 32 is slidably installed on the detection housing 31, a detection spring 34 is installed between the sliding probe 32 and the detection housing 31, a detection rod 39 is slidably installed inside the detection housing 31, a floating plate 35 is installed at the top end of the detection rod 39, a support piece 36 is installed at the bottom end of the detection rod 39, a contact 361 is installed on the support piece 36, a diaphragm 38 is installed inside the detection housing 31, and a piezoelectric ceramic 37 is installed between the diaphragms 38. The top end of the sliding probe 32 is made of an adsorbable material.

[0048] A seepage chamber 33 is formed between the sliding probe 32 and the detection housing 31, the floating plate 35 is located inside the seepage chamber 33, a seepage pore channel 321 is provided on the sliding probe 32, and the seepage pore channel 321 communicates with the seepage chamber 33.

[0049] The adjustment assembly 4 includes a valve shaft 41, the valve shaft 41 is rotatably installed inside the inner housing 12, the valve shaft 41 passes through the inner housing 12 and the outer housing 11 respectively, a driving device is installed at one end of the valve shaft 41, a crank 42 is installed on the valve shaft 41, a connecting rod 43 is rotatably installed on the crank 42, a driving frame 44 is rotatably installed at one end of the connecting rod 43, and the cage 2 is installed on the driving frame 44. The driving device is used to drive the valve shaft 41 to rotate.

[0050] The cage 2 includes a plugging cylinder 21, the plugging cylinder 21 is installed on the driving frame 44, a flow cylinder 22 is installed at one end of the plugging cylinder 21, a number of flow holes 23 are provided on the flow cylinder 22, a magnetic block 24 is installed inside the flow cylinder 22, both the flow cylinder 22 and the plugging cylinder 21 are slidably connected to the inner housing 12 and the outer housing 11, and both the flow cylinder 22 and the plugging cylinder 21 pass through the inner ring 53.

[0051] Working principle of the present invention: The driving device is turned on according to the adjustment requirement. 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. The connecting rod 43 drives the squirrel cage 2 to slide in the valve body 1 through the driving frame 44. When the plugging cylinder 21 on the squirrel cage 2 is located at the flow outlet 17, the flow outlet 17 is blocked, and the flow regulating and pressure regulating valve is in the closed state; when the flow cylinder 22 on the squirrel cage 2 is located at the flow outlet 17, the flow regulating and pressure regulating valve is in the open state. After the medium is filtered by the filtering component 5, it can pass through the flow holes 23 on the flow cylinder 22 and be discharged from the flow outlet 17; by controlling the sliding of the flow cylinder 22 through the valve shaft 41, when the flow cylinder 22 moves forward and penetrates the flow outlet 17, the effective water outlet area of the flow cylinder 22 inside the valve body 1 decreases, and the flow of the flow regulating and pressure regulating valve decreases. On the contrary, the effective water outlet area of the flow cylinder 22 inside the valve body 1 increases, and the flow 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, so as to achieve the functions of regulating the flow and closing the flow regulating and pressure regulating valve.

[0052] When the flow regulating and pressure regulating valve is closed, the plugging cylinder 21 is located at the flow outlet 17, and the flow cylinder 22 completely penetrates the flow outlet 17. At this time, the magnetic block 24 at the bottom of the flow cylinder 22 is located above the leakage detection component 3. 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 stretched. At this time, the volume of the seepage chamber 33 increases, achieving the purpose that the leakage detection component 3 automatically opens following the closing of the flow regulating and pressure regulating valve. When there is a leakage between the squirrel cage 2 and the valve body 1, the medium flowing out from the bottom of the flow outlet 17 enters the leakage chamber through the seepage channel 321. The medium generates buoyancy on the floating plate 35. Under the action of the buoyancy, the floating plate 35 drives the support piece 36 to move upward through the detection rod 39. When the seepage flow is too large, the medium in the seepage chamber 33 increases, the buoyancy on the floating plate 35 becomes larger, and the floating plate 35 drives the support piece 36 to move upward to the position of the piezoelectric ceramic 37. The contact 361 on the support piece 36 presses the piezoelectric ceramic 37 in the elastic film 38. The piezoelectric ceramic 37 generates electric charges under pressure, 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, thus achieving the purpose of leakage detection;

[0053] 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. The sliding probe 32 loses the influence of the magnetic force and retracts under the pulling force of the detection spring 34. The detection housing 31 approaches the sliding probe 32, and the volume of the seepage chamber 33 is compressed and reduced. When the sliding probe 32 retracts, it squeezes the internal medium. The medium in the seepage chamber 33 is extruded from the seepage channel 321, and the floating plate 35 is pressed to the bottom of the seepage chamber 33 by the sliding probe 32 and cannot move, thus achieving the purpose that the leakage detection component 3 automatically closes following the opening of the flow regulating and pressure regulating valve.

[0054] When the medium passes through the filtering component 5, the filter screen 541 on the filtering fan blade 54 filters the impurities in the medium. Moreover, when the medium impacts on the surface of the filtering fan blade 54, the filtering fan blade 54 absorbs part of the impact force and converts it into mechanical energy for its own rotation. The filtering fan blade 54 rotates within the expansion end 13 through the front connecting ring 51 and the rear connecting ring 52. The centrifugal force generated by the rotation drives the impurities filtered on the surface of the filtering fan blade 54 to be thrown out. The guiding strip 542 on the filtering fan blade 54 blocks part of the thrown-out impurities. The blocked impurities enter the guiding groove 5421 and are thrown into the collecting groove 132 along the guiding strip 542 under the action of the centrifugal force. The magnetic ring in the collecting groove 132 can adsorb and separate the metal chips in the impurities, thereby achieving the purpose of impurity filtering, collection and separation, and avoiding the blockage or jamming of the flow regulating and pressure regulating valve. At the same time, the filtering fan blade 54 converts and absorbs the impact force of the medium, alleviates the impact of the medium on the valve body 1, realizes the protection of the valve body 1, avoids the damage of the whole flow regulating and pressure regulating valve due to long-term impact, and improves the service life of the flow regulating and pressure regulating valve.

[0055] The staff regularly observes the internal impurity situation through the inspection opening on the expansion end 13. When there are too many impurities, clean water is input into the inspection opening to wash the impurities in the collecting groove 132, and then the metal chips adsorbed on the magnetic ring 131 are recovered with tools.

[0056] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

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 cage (2) is rotatably mounted on the adjusting component (4), the 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 cage (2), and the cage (2) passes through the filtering component (5); The valve body (1) comprises an outer shell (11), the outer shell (11) is provided with an enlarged end (13), a collecting groove (132) is provided in the enlarged end (13), and a filter assembly (5) is rotatably mounted in the enlarged end (13); 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).

2. A flow regulating and pressure regulating valve with buffering effect according to claim 1, characterized in that: The valve body (1) comprises 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); 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), 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 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).

5. A flow regulating and pressure regulating valve with buffering effect according to claim 4, 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).

6. The flow regulating and pressure regulating valve with buffering effect according to claim 1, 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).

7. A flow regulating and pressure regulating valve with buffering effect according to claim 6, 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).

8. The flow regulating and pressure regulating valve with buffering effect according to claim 4, characterized in that: The top end of the sliding probe (32) is made of an adsorbable material.

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