A stainless steel fluorine-lined diaphragm valve

Abstract

The present invention provides a stainless steel fluorine-lined diaphragm valve, comprising a valve body, a valve core and a diaphragm sleeve, an actuator screw is rotatably connected to the valve core, a base is provided on the valve body, a first mounting hole is penetrated on the base, and a pneumatic mechanism is provided on the base; the pneumatic mechanism comprises a shell, a stator is provided in the shell, an eccentrically arranged rotor is rotatably connected in the stator, a second mounting hole is penetrated at the axis of the rotor, a plurality of receiving grooves are uniformly distributed along the circumference of the side wall of the rotor, blades are slidably connected in the receiving grooves, and an elastic member is connected between the blades and the rotor; an air intake joint and a first exhaust joint are connected to the shell, an air blowing ring is provided on the outer clearance sleeve of the actuator screw, an air blowing hole is opened on the air blowing ring, the first exhaust joint is connected to the air blowing hole, a first air vent and a second air vent are penetrated on the stator, a retaining ring is rotatably connected between the shell and the stator, and an air intake hole is penetrated on the retaining ring. The present invention can effectively prevent dust from invading the threaded connection between the actuator screw and the base.

Description

Technical Field

[0001] The invention relates to the technical field of diaphragm valves, in particular to a stainless steel fluorine-lined diaphragm valve. Background Art

[0002] The traditional stainless steel fluorine-lined diaphragm valve includes key components such as valve body, valve core, valve stem and diaphragm sleeve. Among them, the diaphragm sleeve is connected between the valve core and the valve body, and the valve core is driven by the valve stem to open or close the diaphragm valve. The connection between the valve stem and the valve body mainly includes sliding connection and threaded connection.

[0003] When a sliding connection is used, the valve stem can be pushed by the cylinder to slide, thereby opening or closing the diaphragm valve. However, this method requires a large-section cylinder, resulting in a large volume of the entire diaphragm valve. In addition, when the air source is abnormal, such as when the air pressure decreases or disappears, the diaphragm valve will suddenly change from an open state to a closed state, or from a closed state to an open state, thereby damaging the connected equipment. In addition, since the cylinder moves in a linear motion, this connection method is not easy to adjust the opening size of the diaphragm valve.

[0004] When the threaded connection is adopted, the valve stem (or the actuator screw) can be driven by the pneumatic motor to rotate. Under the action of the thread, the rotation of the valve stem is converted into the linear motion of the valve core. This method is not only stable in operation, but also convenient for adjusting the size of the diaphragm valve opening. However, most valve stems with threaded connections are exposed to the outside and are prone to dust adhesion. These dust will be brought into the threaded connection between the valve stem and the valve body as the valve stem rotates, which will not only aggravate the wear between the valve stem and the valve body, affect the dimensional accuracy of the thread, but also increase the resistance of the valve stem rotation, which is easy to cause the valve stem to rotate unsmoothly or even get stuck. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a stainless steel fluorine-lined diaphragm valve, which can effectively prevent dust from invading the threaded connection of the actuator screw.

[0006] The present invention adopts the following technical solutions.

[0007] A stainless steel fluorine-lined diaphragm valve, comprising a valve body and a valve core, a diaphragm sleeve is connected between the valve body and the valve core, an actuating screw is rotatably connected to the valve core, a base is provided on the valve body, a first mounting hole threadedly connected to the actuating screw is penetrated on the base, and a pneumatic mechanism is provided on the base;

[0008] The pneumatic mechanism comprises a housing, a stator is arranged in the housing, an eccentrically arranged rotor is rotatably connected in the stator, a second mounting hole slidably connected to the actuating screw is penetrated at the axis of the rotor, a plurality of receiving grooves are evenly distributed along the circumferential direction on the side wall of the rotor, blades are slidably connected in the receiving grooves, and an elastic member is connected between the blades and the rotor;

[0009] The housing is connected with an air inlet joint and a first air outlet joint, the outer clearance of the actuator screw is sleeved with an air blowing ring, the air blowing ring is provided with an air blowing hole acting on the actuator screw, the first air outlet joint is connected with the air blowing hole, the stator is penetrated with a first air vent and a second air vent, a retaining ring is rotatably connected between the housing and the stator, the retaining ring is penetrated with an air inlet, and the retaining ring has a first position and a second position;

[0010] When the retaining ring is in the first position, the air inlet connector, the air inlet hole and the first air vent are connected in sequence, and the second air vent is connected to the first exhaust connector;

[0011] When the retaining ring is in the second position, the air inlet connector, the air inlet hole and the second air vent are connected in sequence.

[0012] Furthermore, a friction heat generating layer is provided on the inner wall of the stator.

[0013] Furthermore, a filter chamber is provided in the base, and a grease inlet hole and a grease discharge hole connected to the first mounting hole are respectively provided at the top and bottom ends of the filter chamber. A filter plate is provided in the filter chamber, and a grease scraper plate is provided at the grease inlet hole. The grease scraper plate can swing closer to or away from the executing screw.

[0014] Furthermore, a fat delivery screw is rotatably connected in the filter chamber, a damping sleeve is rotatably sleeved on the fat delivery screw, and the fat scraping plate is arranged on the damping sleeve;

[0015] A driven gear is integrally sleeved on the grease delivery screw rod, and a driving gear meshing with the driven gear is provided on the rotor.

[0016] Furthermore, a cleaning cavity is provided in the base, and an air outlet and an air injection hole are provided at the top and bottom of the cleaning cavity respectively;

[0017] The side wall of the base is provided with a slide groove extending in the circumferential direction and connecting the filter chamber and the cleaning chamber, a baffle is slidably connected in the slide groove, the filter plate is embedded in the baffle, and the baffle has a first position and a second position;

[0018] When the baffle is in the first position, the filter plate is located in the filter cavity;

[0019] When the baffle is in the second position, the filter plate is located in the cleaning chamber.

[0020] Furthermore, the retaining ring is penetrated by a first exhaust hole and a second exhaust hole, and an inner wall of the retaining ring is provided with an air flow groove connecting the first exhaust hole and the second exhaust hole;

[0021] The housing is also connected to a second exhaust connector, which is in communication with the air jet hole;

[0022] When the retaining ring is in the first position, the second air hole, the air flow groove, the first exhaust hole and the first exhaust joint are connected in sequence;

[0023] When the retaining ring is in the second position, the first air hole, the air flow groove, the second exhaust hole and the second exhaust joint are connected in sequence.

[0024] Furthermore, a plurality of heat dissipation fins extending in the circumferential direction are provided on the outer side wall of the stator, and the heat dissipation fins are located in the air flow groove.

[0025] Furthermore, a grease scraping strip is provided at the junction of the slide groove and the cleaning cavity.

[0026] Furthermore, the retaining ring is integrally connected with a rotating block, the baffle is integrally connected with a shifting rod, and the rotating block is provided with a guide hole for the shifting rod to pass through and is slidably connected with the shifting rod.

[0027] The beneficial effects of the present invention are:

[0028] It is understandable that in the process of retracting the exposed actuator screw into the valve body, the retaining ring is in the first position. The compressed air generated by the air source enters the interior of the stator through the air inlet connector, the air inlet hole and the first air vent in turn, and then drives the rotor to rotate in the first direction by pushing the blades, thereby driving the actuator screw to rotate in the first direction. The compressed air after work is blown toward the actuator screw through the second air vent, the first exhaust connector and the blowing hole in turn, blowing off the dust on the actuator screw, thereby effectively preventing dust from invading the threaded connection between the actuator screw and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0031] Figure 2 for Figure 1 A magnified view of part A;

[0032] Figure 3 for Figure 2BB section view (the retaining ring is in the first position at this time);

[0033] Figure 4 Schematic diagram of the structure of the pneumatic mechanism (the retaining ring is in the second position at this time);

[0034] Figure 5 for Figure 2 CC section view (the scraper plate is close to the actuator screw at this time);

[0035] Figure 6 It is a partial structural schematic diagram of this embodiment (the scraper plate is away from the actuating screw at this time);

[0036] Figure 7 for Figure 2 DD section view;

[0037] Figure 8 for Figure 5 EE section view.

[0038] Description of reference numerals:

[0039] Valve body 11, valve core 12, diaphragm sleeve 13,

[0040] Execute screw 2,

[0041] Base 3, filter chamber 31, cleaning chamber 32, chute 33,

[0042] Grease inlet hole 311, grease outlet hole 312,

[0043] The air outlet 321, the air jet hole 322,

[0044] Grease scraper 331,

[0045] Pneumatic mechanism 4,

[0046] Housing 41, stator 42, rotor 43, blades 44, elastic member 45, retaining ring 46, friction heat generating layer 47, heat dissipation fins 48,

[0047] Inlet connector 411, first exhaust connector 412, second exhaust connector 413,

[0048] The first air hole 421, the second air hole 422,

[0049] Air inlet 461, first air outlet 462, second air outlet 463, air flow slot 464,

[0050] Blowing ring 5, blowing hole 51,

[0051] Filter plate 61, baffle plate 62,

[0052] Grease scraper plate 71, damping sleeve 72, grease delivery screw 73,

[0053] Driven gear 81, driving gear 82,

[0054] Rotate block 91 and lever 92. DETAILED DESCRIPTION

[0055] The drawings are only used for illustrative purposes and should not be construed as limitations of this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product.

[0056] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present invention is further described below in conjunction with the drawings and embodiments.

[0057] As shown in the attached drawings, a stainless steel fluorine-lined diaphragm valve comprises a valve body 11 and a valve core 12, a diaphragm sleeve 13 is connected between the valve body 11 and the valve core 12, an actuating screw 2 is rotatably connected to the valve core 12, a base 3 is provided on the valve body 11, a first mounting hole threadedly connected to the actuating screw 2 is penetrated on the base 3, and a pneumatic mechanism 4 is provided on the base 3;

[0058] The pneumatic mechanism 4 includes a housing 41, a stator 42 is arranged in the housing 41, an eccentrically arranged rotor 43 is rotatably connected in the stator 42, a second mounting hole slidably connected to the actuating screw 2 is penetrated at the axis of the rotor 43, a plurality of receiving grooves are evenly distributed along the circumferential direction on the side wall of the rotor 43, blades 44 are slidably connected in the receiving grooves, and an elastic member 45 is connected between the blades 44 and the rotor 43;

[0059] An air inlet joint 411 and a first air outlet joint 412 are connected to the housing 41, a blow ring 5 is sleeved on the outer clearance of the actuator screw 2, a blow hole 51 acting on the actuator screw 2 is opened on the blow ring 5, the first air outlet joint 412 is communicated with the blow hole 51, a first air hole 421 and a second air hole 422 are penetrated on the stator 42, a retaining ring 46 is rotatably connected between the housing 41 and the stator 42, an air inlet hole 461 is penetrated on the retaining ring 46, and the retaining ring 46 has a first position and a second position;

[0060] When the retaining ring 46 is in the first position, the air inlet connector 411, the air inlet hole 461 and the first air vent 421 are connected in sequence, and the second air vent 422 is connected to the first air outlet connector 412;

[0061] When the retaining ring 46 is in the second position, the air inlet connector 411, the air inlet hole 461 and the second air vent 422 are connected in sequence.

[0062] Specifically, the inner wall of the second mounting hole is provided with a pin key extending in the axial direction, and the outer wall of the executing screw rod 2 is provided with a key groove slidably connected to the pin key.

[0063] It is understandable that when the diaphragm valve is in an open state, the actuator screw 2 is exposed. In the process of retracting the exposed actuator screw 2 into the valve body 11, the retaining ring 46 is in the first position. The compressed air generated by the air source enters the stator 42 through the air inlet connector 411, the air inlet hole 461 and the first air vent 421 in turn. Inside the stator 42, the compressed air drives the rotor 43 to rotate in the first direction by pushing the blades 44, thereby driving the actuator screw 2 to rotate in the first direction. The compressed air after work flows to the actuator screw 2 through the second air vent 422, the first exhaust connector 412 and the blowing hole 51 in turn, blowing off the dust on the actuator screw 2, thereby effectively preventing dust from invading the connection between the actuator screw 2 and the valve body 11.

[0064] It is understood that when the diaphragm valve is in a closed state, the actuator screw 2 is retracted into the valve body 11. If the diaphragm valve needs to be opened at this time, the retaining ring 46 is moved to the second position. In this way, the compressed air generated by the air source enters the stator 42 through the air inlet connector 411, the air inlet hole 461 and the second air vent 422 in sequence. Inside the stator 42, the compressed air drives the rotor 43 to rotate in the second direction by pushing the blades 44, thereby driving the actuator screw 2 to rotate in the second direction, thereby realizing the opening of the diaphragm valve.

[0065] As is known to all, the executing screw rod 2 is usually lubricated with grease. Like this, when dust adheres to the executing screw rod 2, due to the viscosity of the grease, the dust on the executing screw rod 2 is not easy to be blown off.

[0066] To solve this problem, preferably, a friction heat generating layer 47 is provided on the inner wall of the stator 42. In the process of compressed air pushing the blades 44 to rotate in the first direction, the blades 44 will rub against the friction heat generating layer 47, thereby generating heat. This heat is transferred to the compressed air, causing the temperature of the compressed air to rise. Then, the heated compressed air passes through the second air vent 422, the first exhaust connector 412 and the blowing hole 51 in turn, and finally blows toward the actuator screw 2 in the form of hot air. When this hot air blows through the actuator screw 2, its heat will be transferred to the dust and grease, softening the grease, thereby weakening the bonding force between the dust and the grease, and thus reducing the difficulty of blowing off the dust on the actuator screw 2.

[0067] It is understandable that for the exposed section of the actuator screw 2, some dust will be embedded in the grease of the exposed section, and even after being blown by hot air, it is difficult to completely remove the embedded dust. To solve this problem,

[0068] Preferably, a filter chamber 31 is provided in the base 3, and a grease inlet hole 311 and a grease discharge hole 312 connected to the first mounting hole are respectively provided at the top and bottom ends of the filter chamber 31. A filter plate 61 is provided in the filter chamber 31, and a grease scraper plate 71 is provided at the grease inlet hole 311. The grease scraper plate 71 can swing close to or away from the execution screw 2.

[0069] Specifically, during the process of the exposed actuator screw 2 being retracted into the valve body 11, one end of the grease scraper plate 71 fits tightly against the thread of the actuator screw 2. When the actuator screw 2 rotates in the first direction, the grease scraper plate 71 will scratch the surface of the actuator screw 2, and guide the grease on the actuator screw 2 to the grease inlet hole 311, so that the grease enters the filter chamber 31 through the grease inlet hole 311. While the grease flows through the filter chamber 31, the filter plate 61 will filter out the dust in the grease. The filtered grease flows back to the actuator screw 2 through the grease discharge hole 312. In this way, not only is it effectively prevented that the grease mixed with dust enters the threaded connection between the actuator screw 2 and the base 3, but dry friction between the screw and the base 3 is also prevented.

[0070] Specifically, when the actuator screw 2 in the valve body 11 is extended to the outside, the grease scraper plate 71 is away from the actuator screw 2. In this way, when the actuator screw 2 rotates in the second direction, the grease scraper plate 71 will not scrape off the grease on the actuator screw 2, so that the exposed actuator screw 2 is still coated with grease. In this way, the actuator screw 2 is isolated from the outside air and the actuator screw 2 is prevented from being rusted.

[0071] It is understandable that, given the poor fluidity of the grease, the grease may not be able to pass through the filter plate 61 by its own gravity. For this reason, preferably, a grease delivery screw 73 is rotatably connected in the filter chamber 31, a damping sleeve 72 is rotatably sleeved on the grease delivery screw 73, and the grease scraping plate 71 is arranged on the damping sleeve 72;

[0072] A driven gear 81 is integrally sleeved on the grease delivery screw 73 , and a driving gear 82 meshing with the driven gear 81 is provided on the rotor 43 .

[0073] Specifically, when the rotor 43 rotates in the first direction, the driven gear 81 and the driving gear 82 cooperate to rotate the grease delivery screw 73 in the second direction opposite to the first direction, thereby continuously delivering the grease in the filter chamber 31 to the grease discharge hole 312, which helps the grease to pass through the filter plate 61 smoothly and achieve effective filtration. At the same time, driven by the grease delivery screw 73, the damping sleeve 72 and the grease scraping plate 71 also rotate in the second direction until the grease scraping plate 71 is in close contact with the grease delivery screw 73.

[0074] On the contrary, when the rotor 43 rotates in the second direction, the grease feeding screw 73 rotates in the first direction. Due to the limit of the amount of grease in the filter chamber 31, the grease in the filter chamber 31 will not overflow from the grease inlet hole 311. At the same time, the damping sleeve 72 and the grease scraping plate 71 also rotate in the first direction until the grease scraping plate 71 is closely attached to the inner wall of the grease inlet hole 311, so that the grease scraping plate 71 is away from the grease feeding screw 73.

[0075] To avoid clogging of the filter plate 61 and thus affecting the filtration of the grease, preferably, a cleaning chamber 32 is provided in the base 3, and an air outlet 321 and an air jet hole 322 are provided at the top and bottom of the cleaning chamber 32 respectively;

[0076] The side wall of the base 3 is provided with a slide groove 33 extending in the circumferential direction and connecting the filter chamber 31 and the cleaning chamber 32. A baffle 62 is slidably connected in the slide groove 33. The filter plate 61 is embedded in the baffle 62. The baffle 62 has a first position and a second position.

[0077] When the baffle 62 is in the first position, the filter plate 61 is located in the filter cavity 31;

[0078] When the baffle plate 62 is at the second position, the filter plate 61 is located in the cleaning chamber 32 .

[0079] Preferably, the retaining ring 46 is penetrated by a first exhaust hole 462 and a second exhaust hole 463, and an inner wall of the retaining ring 46 is provided with an air flow groove 464 connecting the first exhaust hole 462 and the second exhaust hole 463;

[0080] The housing 41 is also connected to a second exhaust connector 413, which is in communication with the air jet hole 322;

[0081] When the retaining ring 46 is in the first position, the second air hole 422, the air flow groove 464, the first exhaust hole 462 and the first exhaust joint 412 are connected in sequence;

[0082] When the retaining ring 46 is at the second position, the first air hole 421 , the air flow groove 464 , the second air exhaust hole 463 and the second air exhaust connector 413 are connected in sequence.

[0083] Specifically, in the process of retracting the exposed actuator screw 2 into the valve body 11, the retaining ring 46 and the baffle 62 are respectively in their respective first positions. The compressed air generated by the air source enters the interior of the stator 42 through the air inlet connector 411, the air inlet hole 461 and the first air vent 421 in turn, and then drives the rotor 43 to rotate in the first direction by pushing the blades 44, thereby driving the actuator screw 2 to rotate in the first direction. The compressed air after work is blown toward the actuator screw 2 through the second air vent 422, the air flow groove 464, the first exhaust hole 462, the first exhaust connector 412 and the blowing hole 51 in turn, blowing off the dust on the actuator screw 2, thereby effectively preventing dust from invading the connection between the actuator screw 2 and the valve body 11.

[0084] Specifically, in the process of extending the actuator screw 2 in the valve body 11 to the outside, the retaining ring 46 and the baffle 62 are respectively in their respective second positions. The compressed air generated by the air source enters the interior of the stator 42 through the air inlet connector 411, the air inlet hole 461 and the second air vent 422 in turn, and then drives the rotor 43 to rotate in the second direction by pushing the blade 44, thereby driving the actuator screw 2 to rotate in the second direction. The compressed air after work passes through the first air vent 421, the air flow groove 464, the second exhaust hole 463, the second exhaust connector 413 and the jet hole 322 in turn, and finally blows to the filter plate 61 in the cleaning chamber 32 in the form of hot air, thereby backblowing the filter plate 61 and reducing the blockage of the filter plate 61. Among them, the hot air helps to soften the grease and weaken the bonding force between the dust and the grease, thereby reducing the difficulty of clearing the filter plate 61.

[0085] Preferably, a plurality of heat dissipation fins 48 extending in the circumferential direction are provided on the outer side wall of the stator 42, and the heat dissipation fins 48 are located in the air flow grooves 464. The air flow grooves 464 help to extend the contact distance between the air and the stator 42, and the heat dissipation fins 48 help to increase the contact area between the air and the stator 42, both of which are conducive to improving the heat exchange efficiency between the stator 42 and the air.

[0086] Preferably, a scraper strip 331 is provided at the junction of the chute 33 and the cleaning chamber 32. It is understood that after the hot air is blown back, the grease and dust mixture that originally blocked the filter plate 61 will accumulate on the surface of the filter plate 61. When the filter plate 61 is reset from the cleaning chamber 32 to the filter chamber 31, the scraper strip 331 will pass over the surface, thereby scraping off the mixture to prevent it from being brought back into the filter chamber 31.

[0087] In order to make the retaining ring 46 and the baffle plate 62 move synchronously, preferably, the retaining ring 46 is integrally connected with a rotating block 91, the baffle plate 62 is integrally connected with a shifting rod 92, and the rotating block 91 is provided with a guide hole for the shifting rod 92 to pass through and is slidably connected with the shifting rod 92.

[0088] It is understood that in actual application, the operator can manually control the rotation of the rotating block 91, or control its rotation through mechanical parts such as electric push rods, electromagnets, cylinders, etc. Since these control methods are not technically difficult, this specification does not describe them in detail.

[0089] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A stainless steel fluorine-lined diaphragm valve, comprising a valve body and a valve core, a diaphragm sleeve is connected between the valve body and the valve core, and an actuating screw is rotatably connected to the valve core, characterized in that: The valve body is provided with a base, the base is penetrated by a first mounting hole threadedly connected to the execution screw, and the base is provided with a pneumatic mechanism; The pneumatic mechanism comprises a housing, a stator is arranged in the housing, an eccentrically arranged rotor is rotatably connected in the stator, a second mounting hole slidably connected to the actuating screw is penetrated at the axis of the rotor, a plurality of receiving grooves are evenly distributed along the circumferential direction on the side wall of the rotor, blades are slidably connected in the receiving grooves, and an elastic member is connected between the blades and the rotor; The housing is connected with an air inlet joint and a first air outlet joint, the outer clearance of the actuator screw is sleeved with an air blowing ring, the air blowing ring is provided with an air blowing hole acting on the actuator screw, the first air outlet joint is connected with the air blowing hole, the stator is penetrated with a first air vent and a second air vent, a retaining ring is rotatably connected between the housing and the stator, the retaining ring is penetrated with an air inlet, and the retaining ring has a first position and a second position; When the retaining ring is in the first position, the air inlet connector, the air inlet hole and the first air vent are connected in sequence, and the second air vent is connected to the first exhaust connector; When the retaining ring is in the second position, the air inlet connector, the air inlet hole and the second air vent are connected in sequence.

2. A stainless steel fluorine-lined diaphragm valve according to claim 1, characterized in that: A friction heat generating layer is arranged on the inner wall of the stator.

3. A stainless steel fluorine-lined diaphragm valve according to claim 1 or 2, characterized in that: A filter cavity is provided in the base, and a grease inlet hole and a grease discharge hole connected to the first mounting hole are respectively provided at the top and bottom ends of the filter cavity. A filter plate is provided in the filter cavity, and a grease scraper plate is provided at the grease inlet hole. The grease scraper plate can swing closer to or away from the execution screw.

4. A stainless steel fluorine-lined diaphragm valve according to claim 3, characterized in that: A grease delivery screw is rotatably connected in the filter chamber, a damping sleeve is rotatably sleeved on the grease delivery screw, and the grease scraper plate is arranged on the damping sleeve; A driven gear is integrally sleeved on the grease delivery screw rod, and a driving gear meshing with the driven gear is provided on the rotor.

5. A stainless steel fluorine-lined diaphragm valve according to claim 3, characterized in that: A cleaning cavity is provided in the base, and an air outlet and an air injection hole are respectively provided at the top and bottom of the cleaning cavity; The side wall of the base is provided with a slide groove extending in the circumferential direction and connecting the filter chamber and the cleaning chamber, a baffle is slidably connected in the slide groove, the filter plate is embedded in the baffle, and the baffle has a first position and a second position; When the baffle is in the first position, the filter plate is located in the filter cavity; When the baffle is in the second position, the filter plate is located in the cleaning chamber.

6. A stainless steel fluorine-lined diaphragm valve according to claim 5, characterized in that: The retaining ring is penetrated by a first exhaust hole and a second exhaust hole, and an inner wall of the retaining ring is provided with an air flow groove connecting the first exhaust hole and the second exhaust hole; The housing is also connected to a second exhaust connector, which is in communication with the air jet hole; When the retaining ring is in the first position, the second air hole, the air flow groove, the first exhaust hole and the first exhaust joint are connected in sequence; When the retaining ring is in the second position, the first air hole, the air flow groove, the second exhaust hole and the second exhaust joint are connected in sequence.

7. A stainless steel fluorine-lined diaphragm valve according to claim 6, characterized in that: A plurality of heat dissipation fins extending in the circumferential direction are arranged on the outer side wall of the stator, and the heat dissipation fins are located in the air flow grooves.

8. A stainless steel fluorine-lined diaphragm valve according to claim 5, characterized in that: A grease scraping strip is arranged at the junction of the slide groove and the cleaning cavity.

9. A stainless steel fluorine-lined diaphragm valve according to claim 5, characterized in that: The baffle ring is integrally connected with a rotating block, the baffle plate is integrally connected with a shifting rod, and the rotating block is provided with a guide hole for the shifting rod to pass through and is slidably connected with the shifting rod.

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