Adjusting device with controllable pressure and flow

Abstract

The pressure and flow controllable adjusting device comprises a mounting base, a driving mechanism, an air bag and a top cover, the air bag and the driving mechanism are mounted at the two ends of the mounting base correspondingly, the top cover is mounted at the end, away from the driving mechanism, of the mounting base, and the air bag is mounted on the side, close to the top cover, of the mounting base; the top cover is provided with an inflation hole, a trace air leakage hole and a residual pressure air leakage hole; an elastic diaphragm piece is arranged between the air bag and the top cover, and an inflation air chamber, a trace air release chamber and a residual pressure air release chamber are arranged on the side, close to the elastic diaphragm piece, of the top cover. The elastic diaphragm piece is provided with a communication gap and an inflation communication hole, the communication gap is communicated with the trace air release chamber, and the inflation communication hole is communicated with the inflation air chamber; the elastic diaphragm piece is provided with a drum-shaped sealing part, and the outer side of the drum-shaped sealing part is used for sealing the excess pressure air leakage hole; the top cover is provided with an air inlet hole which is located outside the installation range of the elastic diaphragm piece on the top cover. When the adjusting device stops running, the residual pressure on the inner side of the adjusting device can be quickly released outwards through the residual pressure gas release hole.

Description

Technical Field

[0001] The present application relates to the field of air pumping devices, and in particular to a pressure and flow controllable regulating device. Background Art

[0002] Air pumping devices have the functions of exhausting, inflating, pressurizing, and gas circulation, and are widely used in various industries. In the process of pumping air to the target container, as the air pressure in the container gradually increases, the air pumping device stops pumping air to the container. At this time, the air pressure in the container tends to be balanced with the pressure inside the air pumping device. When the air pumping device stops running, the pressure inside the air pumping device is difficult to release, which is easy to cause significant damage to the components inside the air pumping device. Utility Model Content

[0003] In order to solve the problem that the internal air pressure is difficult to release quickly when the air pumping device stops running, the present application provides a pressure and flow controllable regulating device.

[0004] The present application provides a pressure and flow controllable regulating device adopts the following technical solution:

[0005] A pressure and flow controllable regulating device comprises a mounting seat, a driving mechanism, an airbag and a top cover, wherein the airbag and the driving mechanism are respectively mounted at two ends of the mounting seat, the top cover is mounted at one end of the mounting seat away from the driving mechanism, the airbag is mounted on a side of the mounting seat close to the top cover, and the driving mechanism is used to drive the airbag to expand and contract; the top cover is provided with an inflation hole, a micro-air release hole and a residual pressure air release hole; an elastic diaphragm is arranged between the airbag and the top cover, and an inflation air chamber, a micro-air release chamber and a residual pressure air release hole are arranged on the side of the top cover close to the elastic diaphragm. A residual pressure relief chamber, the inflatable air chamber is connected to the inflatable hole, the trace air relief chamber is connected to the trace air relief hole, and the residual pressure relief hole is connected to the residual pressure relief chamber; the elastic diaphragm is provided with a connecting gap and an inflatable connecting hole, the connecting gap is connected to the trace air relief chamber, and the inflatable connecting hole is connected to the inflatable air chamber; the elastic diaphragm is provided with a drum-shaped sealing portion, and the outer side of the drum-shaped sealing portion is used to seal the residual pressure relief hole; the top cover is provided with an air inlet hole, the air inlet hole is connected to the airbag, and the air inlet hole is located outside the installation range of the elastic diaphragm on the top cover.

[0006] By adopting the above technical solution, during the operation of the regulating device, the driving mechanism drives the airbag to expand and contract, so that the airbag can pump air. After the air is pressurized by the airbag, it enters the micro-leakage chamber through the connecting gap, and then is discharged from the micro-leakage hole, so as to control the pressure and flow in the regulating device within a certain range, enter the inflation chamber through the inflation connecting hole, and then is discharged from the inflation hole. The air entering the inflation chamber simultaneously causes the drum-shaped sealing part located in the residual pressure relief chamber to bulge, so as to cover the residual pressure relief hole. When the regulating device stops running, the air pressure in the regulating device is released to the outside through the micro-leakage hole, so that the air pressure in the pump drops, so that the sealing effect of the drum-shaped sealing part on the residual pressure relief hole is released, so that the residual pressure inside the regulating device can be quickly released to the outside through the residual pressure relief hole, so that the regulating device is protected.

[0007] Optionally, a diaphragm mounting plate is provided between the top cover and the airbag, the diaphragm mounting plate is provided with a diaphragm mounting groove, the diaphragm mounting plate is provided with an air intake connecting hole, the air intake connecting hole is connected to the air intake hole, and the air intake connecting hole is located outside the distribution range of the diaphragm mounting groove; the diaphragm mounting plate is provided with an exhaust connecting hole, and the diaphragm mounting plate is provided with an exhaust diverter channel on the side close to the elastic diaphragm sheet, the exhaust diverter channel is connected to the exhaust connecting hole, and the exhaust diverter channel is respectively connected to the connecting gap and the inflation connecting hole.

[0008] By adopting the above technical solution, the diaphragm is installed in the diaphragm installation groove of the diaphragm installation plate, and the diaphragm installation plate forms a reliable positioning and supporting effect on the elastic diaphragm. The air intake connecting hole on the diaphragm installation plate can allow the outside air to enter the airbag, and the exhaust connecting hole and the exhaust shunt channel on the diaphragm installation plate can allow the air in the regulating device to enter the micro-deflation chamber and the inflation chamber.

[0009] Optionally, the exhaust diverter channel includes a first diverter channel and a second diverter channel, the first diverter channel is in communication with the connecting gap, and the second diverter channel is in communication with the charging connecting hole.

[0010] By adopting the above technical solution, the first diversion channel and the second diversion channel can respectively guide the air in the regulating device to different air chambers.

[0011] Optionally, the diaphragm mounting plate is provided with a sealing boss, the elastic diaphragm sheet is provided with a penetration hole for the sealing boss to penetrate, the sealing boss is interference fit with the penetration hole, the outer peripheral surface of the sealing boss is provided with a micro-air relief groove, and the connecting gap is formed between the micro-air relief groove and the edge of the penetration hole.

[0012] By adopting the above technical solution, a connecting gap is formed by utilizing the micro-air release groove and the edge of the penetration hole, so that the structure of the connecting gap is relatively stable.

[0013] Optionally, the diaphragm mounting plate is provided with a sealing boss, the elastic diaphragm sheet is provided with a penetration hole for the sealing boss to penetrate, the sealing boss is interference fit with the penetration hole, the sealing boss is provided with a micro-pressure relief hole, the micro-pressure relief hole includes an axial hole and a radial hole, the axial hole is connected with the radial hole, and the micro-pressure relief hole serves as the connecting gap.

[0014] By adopting the above technical solution, the micro pressure relief hole on the sealing boss is used as the connecting gap, so that the structure of the connecting gap is more stable.

[0015] Optionally, the sealing boss is detachably connected to the diaphragm mounting plate.

[0016] By adopting the above technical solution, a detachable connecting hook is provided between the sealing boss and the diaphragm mounting plate, so that the axial hole and the radial hole on the sealing boss can be processed more easily.

[0017] Optionally, a compression spring is provided between the top cover and the elastic diaphragm, the compression spring is located in the micro-leakage chamber, one end of the compression spring abuts against the inner wall of the top cover, the other end of the compression spring abuts against the elastic diaphragm, and the compression spring surrounds the connecting gap on the elastic diaphragm.

[0018] By adopting the above technical solution, the compression spring presses the edge of the communication gap, so that the edge of the communication gap is limited, so that the structure of the communication gap remains stable.

[0019] Optionally, an annular gasket is provided at one end of the compression spring away from the top cover, and an inner hole of the annular gasket is aligned with the communication gap.

[0020] By adopting the above technical solution, the spring presses the edge of the communication gap through the annular gasket, so that the contact area between the spring and the communication gap is increased, which is beneficial to increase the stability of the communication gap.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] During the operation of the regulating device, the driving mechanism drives the airbag to expand and contract, so that the airbag can pump air. After being pressurized by the airbag, the air enters the micro-leakage chamber through the connecting gap, and then is discharged from the micro-leakage hole, so as to control the pressure and flow in the regulating device within a certain range, enter the inflation chamber through the inflation connecting hole, and then be discharged from the inflation hole. The air entering the inflation chamber also causes the drum-shaped sealing part located in the residual pressure relief chamber to swell, so as to cover the residual pressure relief hole. When the regulating device stops running, the air pressure in the regulating device is released to the outside through the micro-leakage hole, so that the air pressure in the pump drops, so that the sealing effect of the drum-shaped sealing part on the residual pressure relief hole is released, so that the residual pressure inside the regulating device can be quickly released to the outside through the residual pressure relief hole, so that the regulating device is protected.

[0023] The diaphragm is installed in the diaphragm installation groove of the diaphragm installation plate, and the diaphragm installation plate forms a reliable positioning and supporting role for the elastic diaphragm. The air inlet connecting hole on the diaphragm installation plate allows the outside air to enter the airbag, and the exhaust connecting hole and exhaust shunt channel on the diaphragm installation plate allow the air in the regulating device to enter the micro-deflation chamber and the inflation chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of the overall structure in Example 1.

[0025] Figure 2 This is an exploded view of the overall structure in Example 1 from another perspective.

[0026] Figure 3 Schematic diagram of the diaphragm mounting plate of Example 1.

[0027] Figure 4 It is a schematic diagram of the combination of the elastic diaphragm sheet and the elastic diaphragm plate in Example 1.

[0028] Figure 5 This is a cross-sectional view for illustrating the path of air flowing from the outside to the airbag in Embodiment 1.

[0029] Figure 6 It is a cross-sectional view used to illustrate the path of air flowing from the installation cavity to the second flow channel in Embodiment 1.

[0030] Figure 7 This is a cross-sectional view for illustrating the path of air flowing from the first flow channel to the exhaust communication hole in the first embodiment.

[0031] Figure 8 It is a cross-sectional view used to illustrate the path of air flowing from the exhaust communication hole to the micro-leakage chamber and the inflation chamber in Example 1.

[0032] Fig. 9 This is a cross-sectional view used to illustrate the path of air discharge from the inflation chamber in Example 1.

[0033] Fig.10 This is a cross-sectional view showing the path of the exhaust of the air from the micro-leak chamber in the first embodiment.

[0034] Fig.11 This is a schematic diagram for illustrating the state in which the drum seal portion is retracted in Example 1.

[0035] Fig.12 Schematic diagram of the diaphragm mounting plate of Example 2.

[0036] Fig.13 It is a schematic diagram of the structure of the elastic diaphragm and the compression spring in Example 3.

[0037] Description of reference numerals:

[0038] 1. Mounting seat; 11. Base; 12. Airbag seat; 121. Mounting hole; 122. Air inlet channel; 123. Second air channel; 13. Mounting cavity; 2. Driving mechanism; 21. Motor; 22. Eccentric wheel; 23. Pusher head; 231. Pusher head seat; 232. Pusher head unit; 2321. Exhaust hole; 24. Oblique axis; 3. Airbag; 31. Airbag unit; 32. Connecting part; 321. One-way connecting hole; 322. Second one-way valve flap; 34. Positioning cylinder wall; 36. Airbag outlet hole; 37. First one-way valve flap; 4. Top cover; 41. Inflating hole; 42. Air inlet hole; 43. Micro-leakage hole; 44. Residual pressure release hole; 45. Inflatable air chamber; 46. ​​Micro-release chamber; 47. Residual pressure release chamber; 51. First clamping claw; 52. Second clamping claw; 6. Elastic diaphragm; 61. Communication gap; 62. Inflatable communication hole; 63. Drum-shaped sealing portion; 64. Through hole; 7. Diaphragm mounting plate; 71. Diaphragm mounting groove; 72. Exhaust communication hole; 73. Intake communication hole; 74. Exhaust diverter channel; 741. First diverter channel; 742. Second diverter channel; 743. Protruding ring; 75. Sealing boss; 751. Micro-release groove; 76. First air channel; 752. Micro-pressure relief hole; 7521. Axial hole; 7522. Radial hole; 610. Exhaust micropore; 8. Compression spring; 81. Annular gasket. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-12 This application is described in further detail. Example 1

[0040] The present application embodiment discloses a pressure and flow controllable regulating device. Figure 1 and Figure 2 The pressure and flow controllable regulating device comprises a mounting seat 1, a driving mechanism 2, an airbag 3 and a top cover 4. The airbag 3 and the driving mechanism 2 are respectively mounted on both ends of the mounting seat 1, the top cover 4 is mounted on the end of the mounting seat 1 away from the driving mechanism 2, the top cover 4 is provided with an inflation hole 41 and three air inlet holes 42, the airbag 3 is mounted on a side of the mounting seat 1 close to the top cover 4, and the driving mechanism 2 is used to drive the airbag 3 to expand and contract; when the airbag 3 is in the process of expanding and contracting, air enters from the air inlet hole 42, and is discharged from the inflation hole 41 after being squeezed.

[0041] The mounting base 1 includes a base 11 and an airbag seat 12. The base 11 is a cylindrical structure. A mounting cavity 13 is formed between the base 11 and the airbag seat 12. The top cover 4 is located on the side of the airbag seat 12 away from the base 11. The top cover 4 is provided with three first claws 51, and the base 11 is provided with three second claws 52. The second claws 52 correspond to the first claws 51 one by one. A detachable connection is formed between the top cover 4 and the base 11 through the first claws 51 and the second claws 52.

[0042] The airbag 3 includes three bowl-shaped airbag units 31. The tops of the three airbag units 31 are commonly connected with a connecting portion 32. The connecting portion 32 is located on a side of the airbag seat 12 close to the top cover 4. The airbag seat 12 is provided with three mounting holes 121 for correspondingly accommodating the airbag units 31. The mounting holes 121 are through holes.

[0043] The driving mechanism 2 includes a motor 21, an eccentric wheel 22 and a push head 23. The eccentric wheel 22 is fixed to the output shaft of the motor 21. An oblique shaft 24 is connected between the eccentric wheel 22 and the push head 23. The oblique shaft 24 is eccentrically arranged relative to the center line of the eccentric wheel 22 and is relatively inclined relative to the center line of the eccentric wheel 22. The push head 23 includes a push head seat 231 and three push head units 232 fixed to the push head seat 231. The push head seat 231 is connected to the oblique shaft 24. The three push head units 232 correspond to three air bag units 31 respectively. The outer bottom wall of the air bag unit 31 is provided with a positioning cylinder wall 34 adapted to the push head unit 232, and the push head unit 232 is inserted into the corresponding positioning cylinder wall 34.

[0044] The push head unit 232 is provided with an exhaust hole 2321 along the axial direction, the airbag seat 12 unit is provided with an airbag outlet hole 36 , and a first one-way valve flap 37 is provided at the edge of the airbag outlet hole 36 , and the first one-way valve flap 37 covers the exhaust hole 2321 .

[0045] The top cover 4 is provided with a trace air leakage hole 43 and a residual pressure air leakage hole 44; an elastic diaphragm sheet 6 is provided between the airbag 3 and the top cover 4, a diaphragm mounting plate 7 is provided between the top cover 4 and the airbag 3, the diaphragm mounting plate 7 is provided with a diaphragm mounting groove 71, the diaphragm mounting plate 7 is provided with an air intake connecting hole 73, the air intake connecting hole 73 is connected to the air intake hole 42, the air intake connecting hole 73 is located outside the distribution range of the diaphragm mounting groove 71, the airbag seat 12 is provided with an air intake channel 122, one end of the air intake channel 122 is connected to the air intake connecting hole 73, and the other end is connected to the mounting cavity 13 of the mounting seat 1.

[0046] An inflation chamber 45, a trace air release chamber 46 and a residual pressure air release chamber 47 are provided on one side of the top cover 4 close to the elastic diaphragm 6. The inflation chamber 45 is connected to the inflation hole 41, the trace air release chamber 46 is connected to the trace air release hole 43, and the residual pressure air release hole 44 is connected to the residual pressure air release chamber 47; the elastic diaphragm 6 is provided with a connecting gap 61 and an inflation connecting hole 62, the connecting gap 61 is connected to the trace air release chamber 46, and the inflation connecting hole 62 is connected to the inflation chamber 45; the elastic diaphragm 6 is provided with a drum-shaped sealing portion 63, and the outer side surface of the drum-shaped sealing portion 63 is used to seal the residual pressure air release hole 44.

[0047] The diaphragm mounting plate 7 is provided with an exhaust connecting hole 72, and an exhaust diverter channel 74 is provided on one side of the diaphragm mounting plate 7 close to the elastic diaphragm sheet 6. The exhaust diverter channel 74 includes a first diverter channel 741 and a second diverter channel 742. The first diverter channel 741 is connected to the connecting gap 61, and the second diverter channel 742 is in communication with the inflation connecting hole 62. The diaphragm mounting plate 7 is provided with a convex ring 743, and the convex ring 743 is located on the inner side of the second diverter channel 742. The edge of the opening of the inflation connecting hole 62 abuts against the convex ring 743.

[0048] The diaphragm mounting plate 7 is provided with a sealing boss 75, and the elastic diaphragm sheet 6 is provided with a penetration hole 64 for the sealing boss 75 to penetrate. The sealing boss 75 and the penetration hole 64 are interference fit, and a micro air release groove 751 is provided on the outer peripheral surface of the sealing boss 75, and a connecting gap 61 is formed between the micro air release groove 751 and the edge of the penetration hole 64.

[0049] The surface of the diaphragm mounting plate 7 close to the airbag 3 is provided with three first air channels 76, which are respectively connected to the three airbag units 31; the airbag seat 12 is provided with three second air channels 123, which are respectively connected to the three first air channels 76, and the three second air channels 123 are simultaneously connected to the exhaust connecting hole 72; the connecting portion 32 of the airbag 3 is provided with three one-way connecting holes 321, which are respectively connected to the three first air channels 76 and the three second air channels 123; the edge of the one-way connecting hole 321 is provided with a second one-way valve flap 322, which is used to control the one-way entry of gas from the first air channel 76 into the second air channel 123.

[0050] Reference Figure 6-11 In the figure, arrows are used to indicate the direction of airflow. During the operation of the regulating device, the outside air enters the installation cavity 13 through the air inlet hole 42, the air inlet connecting hole 73, and the air inlet channel 122 in sequence. Under the squeezing action of the airbag unit 31, the air in the installation cavity 13 passes through the exhaust hole 2321, the airbag outlet hole 36, the first air channel 76, the one-way connecting hole 321, the second air channel 123, the exhaust connecting hole 72, and the exhaust diversion channel 74 in sequence and enters the inflation chamber 45 and the trace air release chamber 46. The air in the inflation chamber 45 is filled into the air-using component. The air in the inflation chamber 45 can make the drum-shaped sealing portion 63 of the elastic diaphragm 6 swell and then cover the residual pressure air release hole 44. The air in the trace air release chamber 46 is directly discharged and the pressure is released.

[0051] When the regulating device stops running, the air pressure in the regulating device is released outwards through the micro-leakage hole 43, causing the air pressure in the pump to drop, thereby releasing the sealing effect of the drum-shaped sealing part 63 on the residual pressure leakage hole 44, so that the pressure inside the regulating device can be quickly released outwards through the residual pressure leakage hole 44, thereby protecting the regulating device. Example 2

[0052] The difference between this embodiment and the first embodiment is that the structure of the sealing protrusion 75 is different from that of the first embodiment. Fig.12 The outer peripheral surface of the sealing boss 75 is not provided with a micro-pressure relief groove 751, and the sealing boss 75 is provided with a micro-pressure relief hole 752. The micro-pressure relief hole 752 includes an axial hole 7521 and a radial hole 7522. The axial hole 7521 is connected to the radial hole 7522. The micro-pressure relief hole 752 serves as a connecting gap 61, making the structure of the connecting gap 61 more stable.

[0053] The sealing boss 75 is detachably connected to the diaphragm mounting plate 7. The connection between the sealing boss 75 and the diaphragm mounting plate 7 can be an interference fit or a threaded connection. The sealing boss 75 is set as a detachable structure, which can make the micro-pressure relief hole 752 easier to process. Example 3

[0054] The difference between this embodiment and the first embodiment is that the sealing protrusion 75 is not provided in this embodiment, and accordingly, the elastic diaphragm sheet 6 in this embodiment is not provided with the penetration hole 64.

[0055] Reference Fig.13 In this embodiment, the elastic diaphragm 6 is provided with exhaust micropores 610, which serve as the connecting gap 61. A compression spring 8 is provided between the top cover 4 and the elastic diaphragm 6. The compression spring 8 is a spiral compression spring. The compression spring 8 is located in the micro-leakage chamber 46. One end of the compression spring 8 abuts against the inner side wall of the top cover 4, and the other end of the compression spring 8 abuts against the elastic diaphragm 6. The compression spring 8 surrounds the connecting gap 61 on the elastic diaphragm 6. An annular gasket 81 is provided at one end of the compression spring 8 away from the top cover 4. The annular gasket 81 is made of metal. The annular gasket 81 is welded and fixed to the compression spring 8, and the inner hole of the annular gasket 81 is aligned with the connecting gap 61. The compression spring 8 presses the edge of the connecting gap 61 through the annular gasket 81, so that the structure of the exhaust micropore 610 remains stable.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressure and flow controllable regulating device, characterized in that: The device comprises a mounting seat (1), a driving mechanism (2), an airbag (3) and a top cover (4), wherein the airbag (3) and the driving mechanism (2) are respectively mounted on two ends of the mounting seat (1), the top cover (4) is mounted on an end of the mounting seat (1) away from the driving mechanism (2), the airbag (3) is mounted on a side of the mounting seat (1) close to the top cover (4), and the driving mechanism (2) is used to drive the airbag (3) to telescope and deform; The top cover (4) is provided with an inflation hole (41), a slight air leakage hole (43) and a residual pressure air leakage hole (44); an elastic diaphragm (6) is provided between the air bag (3) and the top cover (4); an inflation chamber (45), a slight air leakage chamber (46) and a residual pressure air leakage chamber (47) are provided on a side of the top cover (4) close to the elastic diaphragm (6); the inflation chamber (45) is connected to the inflation hole (41), and the slight air leakage chamber (46) is connected to the slight air leakage hole (43), the residual pressure relief hole (44) is connected to the residual pressure relief chamber (47); the elastic diaphragm (6) is provided with a communication gap (61) and an inflation communication hole (62), the communication gap (61) is connected to the trace relief chamber (46), and the inflation communication hole (62) is connected to the inflation chamber (45); the elastic diaphragm (6) is provided with a drum-shaped sealing portion (63), and the outer side of the drum-shaped sealing portion (63) is used to seal the residual pressure relief hole (44); The top cover (4) is provided with an air inlet hole (42), the air inlet hole (42) being in communication with the air bag (3), and the air inlet hole (42) being located outside the installation range of the elastic diaphragm (6) on the top cover (4).

2. A pressure and flow controllable regulating device according to claim 1, characterized in that: A diaphragm mounting plate (7) is provided between the top cover (4) and the airbag (3), the diaphragm mounting plate (7) is provided with a diaphragm mounting groove (71), the diaphragm mounting plate (7) is provided with an air intake connecting hole (73), the air intake connecting hole (73) is connected to the air intake hole (42), and the air intake connecting hole (73) is located outside the distribution range of the diaphragm mounting groove (71); the diaphragm mounting plate (7) is provided with an exhaust connecting hole (72), and an exhaust diverter channel (74) is provided on a side of the diaphragm mounting plate (7) close to the elastic diaphragm sheet (6), the exhaust diverter channel (74) is connected to the exhaust connecting hole (72), and the exhaust diverter channel (74) is respectively connected to the connecting gap (61) and the inflation connecting hole (62).

3. A pressure and flow controllable regulating device according to claim 2, characterized in that: The exhaust flow diversion channel (74) comprises a first flow diversion channel (741) and a second flow diversion channel (742); the first flow diversion channel (741) is in communication with the communication gap (61), and the second flow diversion channel (742) is in communication with the inflation communication hole (62).

4. A pressure and flow controllable regulating device according to claim 2, characterized in that: The diaphragm mounting plate (7) is provided with a sealing boss (75), the elastic diaphragm sheet (6) is provided with a penetration hole (64) for the sealing boss (75) to penetrate, the sealing boss (75) and the penetration hole (64) are interference fit, the outer peripheral surface of the sealing boss (75) is provided with a micro-air release groove (751), and the connecting gap (61) is formed between the micro-air release groove (751) and the edge of the penetration hole (64).

5. A pressure and flow controllable regulating device according to claim 2, characterized in that: The diaphragm mounting plate (7) is provided with a sealing boss (75), the elastic diaphragm sheet (6) is provided with a penetration hole (64) for the sealing boss (75) to penetrate, the sealing boss (75) is interference fit with the penetration hole (64), the sealing boss (75) is provided with a micro-pressure relief hole (752), the micro-pressure relief hole (752) comprises an axial hole (7521) and a radial hole (7522), the axial hole (7521) is connected to the radial hole (7522), and the micro-pressure relief hole (752) serves as the connecting gap (61).

6. A pressure and flow controllable regulating device according to claim 5, characterized in that: The sealing boss (75) is detachably connected to the diaphragm mounting plate (7).

7. A pressure and flow controllable regulating device according to claim 2, characterized in that: A compression spring (8) is provided between the top cover (4) and the elastic diaphragm (6); the compression spring (8) is located in the micro-leakage chamber (46); one end of the compression spring (8) abuts against the inner wall of the top cover (4); the other end of the compression spring (8) abuts against the elastic diaphragm (6); the compression spring (8) surrounds the communication gap (61) on the elastic diaphragm (6).

8. The pressure and flow controllable regulating device according to claim 7, characterized in that: An annular gasket (81) is provided at one end of the compression spring (8) away from the top cover (4), and an inner hole of the annular gasket (81) is aligned with the communication gap (61).

Images