Pneumatic control valve

Abstract

The invention relates to the technical field of adjusting valves, and discloses a pneumatic adjusting valve which comprises a valve body, a valve element, a valve cover, a pneumatic executing mechanism, a liquid inlet pipe and a liquid outlet pipe. The filtering device comprises a first through hole, a filtering plate, a vertical plate mounted on the top wall of the liquid inlet pipe, a horizontal plate fixedly connected to one side of the vertical plate and a strip-shaped hole formed in the horizontal plate; a sliding base is slidably connected into the strip-shaped hole, a first air cylinder is installed on one side of the vertical plate, and a piston rod of the first air cylinder is fixedly connected to one side of the sliding base. A second air cylinder is fixedly connected to the top of the sliding seat, a connecting plate is fixedly connected to a piston rod of the second air cylinder, a sealing plate is fixedly connected to the bottom of the connecting plate, the top of the filtering plate penetrates through the sealing plate and then is fixedly connected with the bottom of the connecting plate, and a first inserting groove for allowing the bottom of the filtering plate to be inserted is formed in the inner wall of the liquid inlet pipe; and a cleaning mechanism for cleaning the filter plate is mounted on the vertical plate. The liquid inlet pipe can be conveniently filtered.

Description

Technical Field

[0001] The present application relates to the technical field of regulating valves, and in particular to a pneumatic regulating valve. Background Art

[0002] The pneumatic control valves that are currently publicly known use compressed gas as the power source, a cylinder as the actuator, and are driven by valve positioners, converters, and other accessories to achieve switching or proportional regulation, and receive control signals from industrial automation control systems to adjust various process parameters such as the flow, pressure, temperature, and liquid level of pipeline media.

[0003] The pneumatic regulating valve in the prior art generally includes a valve body, a valve core, a valve cover and a pneumatic actuator; the pneumatic actuator is used to drive the valve core to move; a liquid inlet pipe and a liquid outlet pipe are respectively provided on both sides of the valve body, and the two ends of the liquid inlet pipe and the liquid outlet pipe are respectively connected to the external pipeline through pipes and flanges.

[0004] However, the prior art is not convenient for filtering the liquid inlet pipe, so some physical objects are easy to enter the valve body along with the liquid medium, which can easily cause damage to the valve core. Summary of the invention

[0005] In order to facilitate filtering of the liquid inlet pipe, the present application provides a pneumatic regulating valve, which adopts the following technical solution: The filtration unit is a kind of air filter according to claim 1, wherein the filtration unit is a kind of air filter and a kind of air filter.

[0006] By adopting the above technical solution, the filter plate is arranged to facilitate filtering the liquid inlet pipe; when the filter plate needs to be cleaned, the connecting plate is first driven to move upward by the piston rod of the second cylinder, and the upward movement of the connecting plate drives the filter plate to move upward, and then the sliding seat is driven to move toward the direction close to the vertical plate by the piston rod of the first cylinder, so that the filter plate can be misaligned with the first through hole, and then the filter plate is cleaned by the cleaning mechanism, so that the filter plate can be cleaned.

[0007] Optionally, the cleaning mechanism includes a vertical groove opened in the vertical plate, a horizontal axis rotatably connected to the side wall of the vertical groove, and a rotating plate vertically fixed to the horizontal axis; a driving component for driving the horizontal axis to rotate is installed in the vertical groove; and a vibration component for vibrating the filter plate is installed on the rotating plate.

[0008] By adopting the above technical solution, when the filter plate needs to be cleaned, the horizontal axis is first driven to rotate by the driving component, and the rotation of the horizontal axis drives the rotating plate to rotate, so that the rotating plate can be horizontal, and then the vibration plate is vibrated by the vibration component, so that the filter plate can be cleaned; in summary, the cleaning mechanism set up facilitates the cleaning of the filter plate.

[0009] Optionally, the vibration component includes a micro motor installed on one side of the rotating plate and a cam rotatably installed on the other side of the rotating plate; the output shaft of the micro motor passes through the rotating plate and is eccentrically connected to the cam; a first mounting frame is fixedly connected to one side of the rotating plate, and a collision rod is slidably connected to the first mounting frame, a reset block is fixedly connected to one side of the collision rod, and a first reset spring is arranged between the reset block and the first mounting frame; one end of the collision rod abuts against the circumferential surface of the cam, and the other end can abut against the filter plate.

[0010] By adopting the above technical solution, when the filter plate needs to be vibrated, the micro motor is started first. At this time, the output shaft of the micro motor drives the cam to rotate, and the rotation of the cam drives the impact rod to move in the direction away from the cam. The movement of the impact rod in the direction away from the cam drives the reset block to move in the direction away from the cam. At this time, the reset block presses the first reset spring, which can make the impact rod move back and forth. When the cam rotates rapidly, the impact rod can move back and forth rapidly, thereby allowing the filter plate to vibrate. In summary, the vibration component is set to facilitate the vibration of the filter plate.

[0011] Optionally, the driving assembly includes a horizontal groove opened on the side wall of the vertical groove, a first guide rod fixedly connected to the horizontal groove, a first sliding sleeve slidably connected to the first guide rod, a first baffle fixedly connected to one end of the first guide rod, and a first return spring arranged between the first sliding sleeve and the first baffle; a rack is fixedly connected to the bottom of the first sliding sleeve, a gear is fixedly connected to one end of the horizontal shaft, and the gear is meshed with the rack; a transmission mechanism for driving the rack to move is installed in the vertical groove.

[0012] By adopting the above technical solution, when it is necessary to drive the horizontal axis to rotate, the rack is first driven to move through the transmission mechanism, the rack movement drives the gear to rotate, and the gear rotation can drive the horizontal axis to rotate; in summary, the set drive assembly is convenient for driving the horizontal axis to rotate.

[0013] The cam is an assembly made of a plurality of gears, and the plurality of gears are connected to each other with a plurality of gears, and the plurality of gears are connected to each other with a plurality of gears, and the plurality of gears are connected to each other with a plurality of gears.

[0014] By adopting the above technical solution, when the piston rod of the first cylinder drives the slide to move in the direction close to the vertical plate, the slide drives the push rod to move in the direction close to the vertical plate, the push rod moves in the direction close to the vertical plate to drive the push plate to move, and then the push plate drives the driving plate to move downward under the action of the second inclined surface, the driving plate moves downward and drives the driving block to move downward, and then the driving block can drive the rack to move under the action of the first inclined surface; in summary, the transmission mechanism set up is convenient for driving the rack to move.

[0015] Optionally, a material receiving mechanism is installed on the top of the liquid inlet pipe, and the material receiving mechanism includes a first dovetail groove opened on the top of the liquid inlet pipe, a first dovetail plate slidably connected to the first dovetail groove, and a fourth return spring fixed to one side of the first dovetail plate; one end of the fourth return spring away from the first dovetail plate is fixed to the inner wall of one end of the first dovetail groove; a blocking seat is fixed to the top of the first dovetail plate, and the blocking seat can be located above the first through hole; a second slot is opened on the top of the blocking seat, and a receiving box is inserted in the second slot; a vertical block is fixed to the top of the blocking seat, and a connecting rod is hinged between the vertical block and the driving plate.

[0016] By adopting the above technical solution, when the driving plate moves downward, the driving plate drives the connecting rod to move, and the connecting rod movement drives the blocking seat to move in the direction close to the first through hole, so that the first through hole can be blocked, thereby reducing the debris cleaned from the filter plate from entering the liquid inlet pipe through the first through hole; in addition, the blocking seat moves in the direction close to the first through hole, driving the receiving box to move below the filter plate, which makes it easier for the receiving box to hold the debris cleaned from the filter plate.

[0017] Optionally, a protective device for protecting the filtering device is installed on the top of the liquid inlet pipe.

[0018] By adopting the above technical solution, the protective device is provided, which facilitates the protection of the filtering device.

[0019] Optionally, the protective device includes a second dovetail groove opened at the top of the liquid inlet pipe, a second dovetail plate slidably connected to the second dovetail groove, and a fifth return spring fixed to one side of the second dovetail plate; the end of the fifth return spring away from the second dovetail plate is fixed to the inner wall of one end of the second dovetail groove; a protective cover is fixed to the top of the second dovetail plate, a pull rod is fixed to one side of the protective cover, one side and the bottom of the protective cover are completely open, a second through hole for the sliding of the cylinder body of the first cylinder and a notch for the sliding of the cylinder body of the second cylinder are provided on the protective cover; the cylinder body of the second cylinder is installed with a horizontal rod, and the horizontal rod abuts against the side of the protective cover away from its opening.

[0020] By adopting the above technical scheme, the protective cover is set up to facilitate the protection of the filtering device; the horizontal rod is set up to facilitate driving the protective cover to move in the direction away from the filtering device, so that it is convenient to observe the cleaning of the filter plate; the second dovetail plate and the fifth reset spring are set up to facilitate the resetting of the protective cover; the pull rod is set up to facilitate manually driving the protective cover to move.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The filter plate is provided to facilitate filtering the liquid inlet pipe; when the filter plate needs to be cleaned, the piston rod of the second cylinder first drives the connecting plate to move upward, and the connecting plate moves upward to drive the filter plate to move upward, and then the piston rod of the first cylinder drives the slide seat to move toward the direction close to the vertical plate, so that the filter plate can be misaligned with the first through hole, and then the filter plate is cleaned by the cleaning mechanism, so that the filter plate can be cleaned; 2. When the filter plate needs to be vibrated, the micro motor is started first. At this time, the output shaft of the micro motor drives the cam to rotate. The rotation of the cam drives the impact rod to move in a direction away from the cam. The impact rod moves in a direction away from the cam, driving the reset block to move in a direction away from the cam. At this time, the reset block presses the first reset spring, so that the impact rod can move back and forth. When the cam rotates rapidly, the impact rod can move back and forth rapidly, so that the filter plate can vibrate. In summary, the vibration assembly is set to facilitate the vibration of the filter plate; 3. The protective cover is provided to protect the filtering device; the horizontal rod is provided to drive the protective cover to move away from the filtering device, so as to facilitate observation of the cleaning of the filter plate; the second dovetail plate and the fifth reset spring are provided to reset the protective cover; the pull rod is provided to manually drive the protective cover to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 It is a structural schematic diagram highlighting the filtering device and the protective device in the embodiment of the present application.

[0024] Figure 3 It is a structural schematic diagram highlighting the cleaning mechanism in the embodiment of the present application.

[0025] Figure 4 It is a structural schematic diagram highlighting the vibration component and the drive component in the embodiment of the present application.

[0026] Figure 5 It is a structural schematic diagram highlighting the material receiving mechanism in the embodiment of the present application.

[0027] Figure numerals: 1, valve body; 11, valve cover; 12, pneumatic actuator; 13, liquid inlet pipe; 131, first slot; 14, liquid outlet pipe; 2, filter device; 21, first through hole; 22, filter plate; 23, vertical plate; 24, horizontal plate; 241, strip hole; 25, slide seat; 26, first cylinder; 27, second cylinder; 28, connecting plate; 29, sealing plate; 3, cleaning mechanism; 31, vertical slot; 32, horizontal axis; 33, rotating plate; 4, vibration assembly; 41, micro motor; 42, cam; 43, first mounting bracket; 44, impact rod; 45, reset block; 46, first reset spring; 5, drive assembly; 51, horizontal slot; 52, first guide rod; 53, first sliding sleeve; 54, first baffle; 55, horizontal spring; 56, rack; 561 , the first inclined plane; 57, gear; 6, transmission mechanism; 61, the second mounting bracket; 62, the second guide rod; 63, the second sliding sleeve; 64, the second return spring; 65, the driving plate; 651, the driving block; 66, the perforation; 67, the push plate; 671, the second inclined plane; 68, the third guide rod; 681, the second baffle; 682, the third return spring; 69, the push rod; 7, the material receiving mechanism; 71, the first dovetail groove; 72, the first dovetail plate; 73, the fourth return spring; 74, the blocking seat; 741, the second slot; 75, the receiving box; 76, the vertical block; 77, the connecting rod; 8, the protective device; 81, the second dovetail groove; 82, the second dovetail plate; 83, the fifth return spring; 84, the protective cover; 841, the second through hole; 842, the notch; 85, the pull rod; 86, the horizontal rod. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.

[0029] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0030] The present application embodiment discloses a pneumatic control valve, referring to Figure 1 , including a valve body 1, a valve core, a valve cover 11, a pneumatic actuator 12, a liquid inlet pipe 13 and a liquid outlet pipe 14. The liquid inlet pipe 13 is square and a filtering device 2 is installed on the liquid inlet pipe 13.

[0031] Reference Figure 2 and Figure 3 The filter device 2 includes a first through hole 21 opened at the top of the liquid inlet pipe 13, a filter plate 22 vertically slidably connected to the first through hole 21, a vertical plate 23 vertically installed on the top wall of the liquid inlet pipe 13, a horizontal plate 24 horizontally fixed to one side of the vertical plate 23, and a strip hole 241 opened in the horizontal plate 24; a slide seat 25 is horizontally slidably connected in the strip hole 241, a first cylinder 26 is horizontally installed on one side of the vertical plate 23, and a piston rod of the first cylinder 26 It is fixed to one side of the slide seat 25; a second cylinder 27 is vertically fixed to the top of the slide seat 25, a piston rod of the second cylinder 27 is fixed to a connecting plate 28, a sealing plate 29 is fixed to the bottom of the connecting plate 28, the top of the filter plate 22 passes through the sealing plate 29 and is fixed to the bottom of the connecting plate 28, a first slot 131 for plugging the bottom of the filter plate 22 is provided on the inner wall of the liquid inlet pipe 13, and a cleaning mechanism 3 for cleaning the filter plate 22 is installed on the vertical plate 23. The filter plate 22 is provided to facilitate filtering the liquid inlet pipe 13; when the filter plate 22 needs to be cleaned, the connecting plate 28 is first driven to move upward by the piston rod of the second cylinder 27, and the upward movement of the connecting plate 28 drives the filter plate 22 to move upward, and then the slide seat 25 is driven by the piston rod of the first cylinder 26 to move toward the direction close to the vertical plate 23, so that the filter plate 22 can be misaligned with the first through hole 21, and then the filter plate 22 is cleaned by the cleaning mechanism 3, so that the filter plate 22 can be cleaned.

[0032] Reference Figure 3 and Figure 4The cleaning mechanism 3 includes a vertical slot 31 provided in the vertical plate 23, a horizontal shaft 32 vertically rotatably connected to the side wall of the vertical slot 31 through a bearing, and a rotating plate 33 vertically fixed to the horizontal shaft 32; a driving assembly 5 for driving the horizontal shaft 32 to rotate is installed in the vertical slot 31; a vibration assembly 4 for vibrating the filter plate 22 is installed on the rotating plate 33. When the filter plate 22 needs to be cleaned, the horizontal shaft 32 is first driven to rotate by the driving assembly 5, and the rotation of the horizontal shaft 32 drives the rotating plate 33 to rotate, so that the rotating plate 33 can be in a horizontal state, and then the vibration assembly 4 is used to vibrate the vibration plate, so that the filter plate 22 can be cleaned; in summary, the cleaning mechanism 3 is set to facilitate the cleaning of the filter plate 22.

[0033] Reference Figure 3 and Figure 4 The vibration component 4 includes a micro motor 41 installed on one side of the rotating plate 33 and a cam 42 rotatably installed on the other side of the rotating plate 33 through a bearing; the output shaft of the micro motor 41 passes through the rotating plate 33 and is eccentrically connected to the cam 42; a first mounting frame 43 is fixedly connected to one side of the rotating plate 33, and a striking rod 44 is slidably connected to the first mounting frame 43, and the striking rod 44 passes through the first mounting frame 43, and a reset block 45 is fixedly connected to one side of the striking rod 44, and a first reset spring 46 is arranged between the reset block 45 and the first mounting frame 43; one end of the striking rod 44 abuts against the circumferential surface of the cam 42, and the other end can abut against the filter plate 22. When the filter plate 22 needs to be vibrated, the micro motor 41 is started first. At this time, the output shaft of the micro motor 41 drives the cam 42 to rotate, and the cam 42 rotates to drive the impact rod 44 to move away from the cam 42. The impact rod 44 moves away from the cam 42 and drives the reset block 45 to move away from the cam 42. At this time, the reset block 45 presses the first reset spring 46, so that the impact rod 44 can move back and forth. When the cam 42 rotates rapidly, the impact rod 44 can move back and forth rapidly, so that the filter plate 22 can vibrate. In summary, the vibration component 4 is set to facilitate the vibration of the filter plate 22.

[0034] Reference Figure 3 and Figure 4The driving assembly 5 includes a horizontal slot 51 provided on the side wall of the vertical slot 31, a first guide rod 52 fixedly connected to the horizontal slot 51, a first sliding sleeve 53 slidably connected to the first guide rod 52, a first baffle 54 fixedly connected to one end of the first guide rod 52, and a horizontal spring 55 arranged between the first sliding sleeve 53 and the first baffle 54; a rack 56 is fixedly connected to the bottom of the first sliding sleeve 53, a gear 57 is fixedly connected to one end of the horizontal shaft 32, and the gear 57 is meshed with the rack 56; a transmission mechanism 6 for driving the rack 56 to move is installed in the vertical slot 31. When it is necessary to drive the horizontal shaft 32 to rotate, the rack 56 is first driven to move by the transmission mechanism 6, and the rack 56 moves to drive the gear 57 to rotate, and the gear 57 rotates to drive the horizontal shaft 32 to rotate; in summary, the driving assembly 5 is arranged to facilitate driving the horizontal shaft 32 to rotate.

[0035] Reference Figure 2-Figure 4 The transmission mechanism 6 includes a second mounting frame 61 fixedly connected to one side of the vertical slot 31, a second guide rod 62 fixedly connected to the second mounting frame 61, a second sliding sleeve 63 slidably connected to the second guide rod 62, and a second return spring 64 installed between the second sliding sleeve 63 and the second mounting frame 61; a driving plate 65 is fixedly connected to one side of the second sliding sleeve 63, a driving block 651 is fixedly connected to the side of the driving plate 65 close to the rack 56, a first inclined surface 561 is provided on the top of the rack 56, and the first inclined surface 561 matches the side wall of the driving block 651; a through hole 66 is provided on the top of the vertical slot 31, and the through hole A push plate 67 is connected to the inner side of 66 for sliding in the horizontal direction, and second inclined surfaces 671 are respectively provided on the opposite inner sides of the push plate 67 and the driving plate 65, and the two second inclined surfaces 671 match each other; a third guide rod 68 is slidably provided on the vertical plate 23, and the third guide rod 68 passes through the vertical plate 23, and one end of the third guide rod 68 is fixedly connected to a second baffle plate 681, and a third return spring 682 is horizontally provided between the second baffle plate 681 and the vertical plate 23; the top of the second baffle plate 681 is fixedly connected to the bottom of the push plate 67, and a push rod 69 is fixedly connected to one side of the connecting plate 28, and the push rod 69 abuts against one end of the push plate 67. When the piston rod of the first cylinder 26 drives the slide 25 to move in the direction close to the vertical plate 23, the slide 25 drives the push rod 69 to move in the direction close to the vertical plate 23, the push rod 69 moves in the direction close to the vertical plate 23 to drive the push plate 67 to move, and then the push plate 67 drives the driving plate 65 to move downward under the action of the second inclined surface 671, the driving plate 65 moves downward and drives the driving block 651 to move downward, and then the driving block 651 can drive the rack 56 to move under the action of the first inclined surface 561; in summary, the transmission mechanism 6 is set to facilitate driving the rack 56 to move.

[0036] Reference Figure 2 and Figure 5A material receiving mechanism 7 is installed on the top of the liquid inlet pipe 13, and the material receiving mechanism 7 includes a first dovetail groove 71 opened at the top of the liquid inlet pipe 13, a first dovetail plate 72 slidingly connected to the first dovetail groove 71 along the horizontal direction, and a fourth return spring 73 fixedly connected to one side of the first dovetail plate 72; one end of the fourth return spring 73 away from the first dovetail plate 72 is fixedly connected to the inner wall of one end of the first dovetail groove 71; a blocking seat 74 is fixedly connected to the top of the first dovetail plate 72, and the blocking seat 74 can be located above the first through hole 21; a second slot 741 is opened on the top of the blocking seat 74, and a receiving box 75 is inserted in the second slot 741; a vertical block 76 is fixedly connected to the top of the blocking seat 74, and a connecting rod 77 is hinged between the vertical block 76 and the driving plate 65. When the driving plate 65 moves downward, the driving plate 65 drives the connecting rod 77 to move, and the connecting rod 77 drives the blocking seat 74 to move in the direction close to the first through hole 21, so that the first through hole 21 can be blocked, thereby reducing the debris cleaned off the filter plate 22 from entering the liquid inlet pipe 13 through the first through hole 21; in addition, the blocking seat 74 moves in the direction close to the first through hole 21, driving the receiving box 75 to move below the filter plate 22, so that it is convenient for the receiving box 75 to hold the debris cleaned off the filter plate 22.

[0037] Reference Figure 1 and Figure 2 A protective device 8 for protecting the filter device 2 is installed on the top of the liquid inlet pipe 13; the protective device 8 is provided to facilitate the protection of the filter device 2.

[0038] Reference Figure 1 and Figure 2 The protective device 8 includes a second dovetail groove 81 opened at the top of the liquid inlet pipe 13, a second dovetail plate 82 slidably connected to the second dovetail groove 81 in the horizontal direction, and a fifth return spring 83 fixed to one side of the second dovetail plate 82; one end of the fifth return spring 83 away from the second dovetail plate 82 is fixed to the inner wall of one end of the second dovetail groove 81; a protective cover 84 is fixed to the top of the second dovetail plate 82, and a pull rod 85 is fixed to one side of the protective cover 84. One side and the bottom of the protective cover 84 are completely open. The protective cover 84 is provided with a second through hole 841 for the sliding of the cylinder body of the first cylinder 26 and a notch 842 for the sliding of the cylinder body of the second cylinder 27; the cylinder body of the second cylinder 27 is installed with a horizontal rod 86, and the horizontal rod 86 abuts against the side of the protective cover 84 away from its opening. The protective cover 84 is provided to facilitate protection of the filter device 2; the horizontal rod 86 is provided to facilitate driving the protective cover 84 to move away from the filter device 2, so as to facilitate observation of the cleaning of the filter plate 22; the second dovetail plate 82 and the fifth reset spring 83 are provided to facilitate resetting the protective cover 84; the pull rod 85 is provided to facilitate manual driving of the protective cover 84 to move.

[0039] Working principle: the filter plate 22 is arranged to facilitate filtering the liquid inlet pipe 13; when the filter plate 22 needs to be cleaned, the connecting plate 28 is first driven to move upward by the piston rod of the second cylinder 27, and the connecting plate 28 moves upward to drive the filter plate 22 to move upward, and then the slide 25 is driven to move in the direction close to the vertical plate 23 by the piston rod of the first cylinder 26. At this time, the slide 25 drives the push rod 69 to move in the direction close to the vertical plate 23, and the push rod 69 moves in the direction close to the vertical plate 23 to drive the push plate 67 to move, and then the push plate 67 drives the driving plate 65 to move downward under the action of the second inclined surface 671, and the driving plate 65 moves downward to drive the driving block 651 to move downward, and then the driving block 651 drives the rack 56 to move under the action of the first inclined surface 561, and the rack 56 moves to drive the gear 57 to rotate, and the gear 57 rotates to drive the horizontal shaft 32 to rotate, so that the rotating plate 33 can be in a horizontal state; in addition, when the driving plate 56 is driven When the filter element 22 is in the open position, the filter element 22 is moved downwardly, and the driving plate 65 drives the connecting rod 77 to move. The connecting rod 77 drives the blocking seat 74 to move in the direction close to the first through hole 21. The blocking seat 74 moves in the direction close to the first through hole 21, driving the object receiving box 75 to move below the filter plate 22, so that the object receiving box 75 can hold the sundries cleaned up on the filter plate 22; next, the micromotor 41 is started, and the output shaft of the micromotor 41 drives the cam 42 to rotate. The cam 42 rotates and drives the impact rod 44 to move in the direction away from the cam 42. The impact rod 44 moves in the direction away from the cam 42 and drives the reset block 45 to move in the direction away from the cam 42. At this time, the reset block 45 presses the first reset spring 46, which can make the impact rod 44 reciprocate. When the cam 42 rotates rapidly, the impact rod 44 can reciprocate rapidly, which can make the filter plate 22 vibrate, so that the filter plate 22 can be cleaned.

[0040] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A pneumatic regulating valve, comprising a valve body (1), a valve core, a valve cover (11), a pneumatic actuator (12), a liquid inlet pipe (13) and a liquid outlet pipe (14), characterized in that: The liquid inlet pipe (13) is square in shape. A filter device (2) is installed on the liquid inlet pipe (13). The filter device (2) comprises a first through hole (21) opened at the top of the liquid inlet pipe (13), a filter plate (22) vertically slidably connected to the first through hole (21), a vertical plate (23) installed on the top wall of the liquid inlet pipe (13), a horizontal plate (24) fixedly connected to one side of the vertical plate (23), and a strip hole (241) opened in the horizontal plate (24); a sliding seat (25) is slidably connected in the strip hole (241), a first cylinder (26) is installed on one side of the vertical plate (23), and the first The piston rod of the cylinder (26) is fixedly connected to one side of the slide seat (25); the top of the slide seat (25) is fixedly connected to a second cylinder (27); the piston rod of the second cylinder (27) is fixedly connected to a connecting plate (28); the bottom of the connecting plate (28) is fixedly connected to a sealing plate (29); the top of the filter plate (22) passes through the sealing plate (29) and is fixedly connected to the bottom of the connecting plate (28); the inner wall of the liquid inlet pipe (13) is provided with a first slot (131) for inserting the bottom of the filter plate (22); and a cleaning mechanism (3) for cleaning the filter plate (22) is installed on the vertical plate (23).

2. A pneumatic control valve according to claim 1, characterized in that: The cleaning mechanism (3) comprises a vertical slot (31) provided in the vertical plate (23), a horizontal shaft (32) rotatably connected to the side wall of the vertical slot (31), and a rotating plate (33) vertically fixed to the horizontal shaft (32); a driving assembly (5) for driving the horizontal shaft (32) to rotate is installed in the vertical slot (31); and a vibration assembly (4) for vibrating the filter plate (22) is installed on the rotating plate (33).

3. A pneumatic regulating valve according to claim 2, characterized in that: The vibration component (4) comprises a micro motor (41) mounted on one side of a rotating plate (33) and a cam (42) rotatably mounted on the other side of the rotating plate (33); the output shaft of the micro motor (41) passes through the rotating plate (33) and is eccentrically connected to the cam (42); a first mounting frame (43) is fixedly connected to one side of the rotating plate (33); a striking rod (44) is slidably connected to the first mounting frame (43); a reset block (45) is fixedly connected to one side of the striking rod (44); a first reset spring (46) is provided between the reset block (45) and the first mounting frame (43); one end of the striking rod (44) abuts against the circumferential surface of the cam (42), and the other end can abut against the filter plate (22).

4. A pneumatic regulating valve according to claim 2, characterized in that: The driving assembly (5) comprises a horizontal groove (51) provided on a side wall of the vertical groove (31), a first guide rod (52) fixedly connected to the horizontal groove (51), a first sliding sleeve (53) slidably connected to the first guide rod (52), a first baffle plate (54) fixedly connected to one end of the first guide rod (52), and a first return spring (46) arranged between the first sliding sleeve (53) and the first baffle plate (54); a rack (56) is fixedly connected to the bottom of the first sliding sleeve (53), a gear (57) is fixedly connected to one end of the horizontal shaft (32), and the gear (57) is meshed with the rack (56); a transmission mechanism (6) for driving the rack (56) to move is installed in the vertical groove (31).

5. A pneumatic regulating valve according to claim 4, characterized in that: The transmission mechanism (6) comprises a second mounting frame (61) fixedly connected to one side of the vertical slot (31), a second guide rod (62) fixedly connected to the second mounting frame (61), a second sliding sleeve (63) slidably connected to the second guide rod (62), and a second return spring (64) installed between the second sliding sleeve (63) and the second mounting frame (61); a driving plate (65) is fixedly connected to one side of the second sliding sleeve (63); a driving block (651) is fixedly connected to the side of the driving plate (65) close to the rack (56); a first inclined surface (561) is provided at the top of the rack (56), and the first inclined surface (561) matches the side wall of the driving block (651); a through hole (66) is provided at the top of the vertical slot (31), and the through hole (66) is provided at the top of the vertical slot (31). A push plate (67) is slidably connected in the hole (66), and second inclined surfaces (671) are respectively provided on the opposite inner sides of the push plate (67) and the driving plate (65), and the two second inclined surfaces (671) match each other; a third guide rod (68) is slidably provided on the vertical plate (23), and the third guide rod (68) passes through the vertical plate (23), and one end of the third guide rod (68) is fixedly connected to a second baffle plate (681), and a third return spring (682) is provided between the second baffle plate (681) and the vertical plate (23); the top of the second baffle plate (681) is fixedly connected to the bottom of the push plate (67), and a push rod (69) is fixedly connected to one side of the connecting plate (28), and the push rod (69) abuts against one end of the push plate (67).

6. A pneumatic regulating valve according to claim 5, characterized in that: A material receiving mechanism (7) is installed on the top of the liquid inlet pipe (13), and the material receiving mechanism (7) comprises a first dovetail groove (71) opened on the top of the liquid inlet pipe (13), a first dovetail plate (72) slidably connected to the first dovetail groove (71), and a fourth return spring (73) fixedly connected to one side of the first dovetail plate (72); one end of the fourth return spring (73) away from the first dovetail plate (72) is fixedly connected to the inner wall of one end of the first dovetail groove (71); a blocking seat (74) is fixedly connected to the top of the first dovetail plate (72), and the blocking seat (74) can be located above the first through hole (21); a second slot (741) is opened on the top of the blocking seat (74), and a receiving box (75) is inserted into the second slot (741); a vertical block (76) is fixedly connected to the top of the blocking seat (74), and a connecting rod (77) is hinged between the vertical block (76) and the driving plate (65).

7. The pneumatic regulating valve according to claim 1, characterized in that: A protective device (8) for protecting the filtering device (2) is installed on the top of the liquid inlet pipe (13).

8. The pneumatic regulating valve according to claim 7, characterized in that: The protective device (8) comprises a second dovetail groove (81) provided at the top of the liquid inlet pipe (13), a second dovetail plate (82) slidably connected to the second dovetail groove (81), and a fifth return spring (83) fixed to one side of the second dovetail plate (82); one end of the fifth return spring (83) away from the second dovetail plate (82) is fixed to the inner wall of one end of the second dovetail groove (81); a protective cover (84) is fixed to the top of the second dovetail plate (82); A pull rod (85) is fixedly connected to one side of the cover (84), and one side and the bottom of the protective cover (84) are completely open. The protective cover (84) is provided with a second through hole (841) for the sliding movement of the cylinder body of the first cylinder (26) and a notch (842) for the sliding movement of the cylinder body of the second cylinder (27); the cylinder body of the second cylinder (27) is installed with a horizontal rod (86), and the horizontal rod (86) is in contact with the side of the protective cover (84) away from its opening.

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