CN211273903U - Automatic switching type anti-blocking filter - Google Patents
Automatic switching type anti-blocking filter Download PDFInfo
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- CN211273903U CN211273903U CN201922060693.4U CN201922060693U CN211273903U CN 211273903 U CN211273903 U CN 211273903U CN 201922060693 U CN201922060693 U CN 201922060693U CN 211273903 U CN211273903 U CN 211273903U
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Abstract
The utility model discloses an automatic switching type anti-blocking filter, which comprises a first filter component, a second filter component and a switching valve; the filter assembly includes: a filter body; a valve plate drive mechanism; the distribution cylinder comprises a cylinder body and a piston movably arranged in the cylinder body; the cylinder body is provided with a first air inlet, a second air inlet, a first exhaust port and a second exhaust port; the first air inlet is communicated with the air inlet of the filtering main body, and the second air inlet is communicated with the air outlet of the filtering main body; the first air inlet and the first exhaust port are communicated or closed, and the second air inlet and the second exhaust port are communicated or closed in the moving process of the piston; a manual exhaust valve is arranged on the second air inlet and used for opening or closing a loop between the air outlet and the second air inlet; and a branch pipe is arranged on the first exhaust port, and one branch of the branch pipe is communicated with a cylinder of the valve plate driving mechanism.
Description
Technical Field
The utility model relates to a gas filtration technical field, in particular to automatic stifled type filter is prevented to switching formula.
Background
In the precision manufacturing industry and the precision gas analysis industry, high requirements are placed on cleanliness of compressed air such as water content, oil content and dust content, and the current technology mainly filters water, oil and dust in the compressed air through various filters.
However, in the actual use process of the filtering main body, if a maintainer cannot replace the filter or the filter element in time, and the cleanliness of the filtered compressed air cannot meet the process production requirement, the compressed air which does not reach the standard in the production field can be used, so that serious accidents such as product quality reduction, product scrapping and the like can be caused.
At present, an equipment is urgently needed, the filter which can be replaced in time can also reduce compressed air maintenance personnel, and the control requirement of low cost is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic switching formula prevents stifled type filter aims at providing a set of parallelly connected filtering component to when the filter capacity of one of them filtration main part reduces, can block this filtration main part gas outlet automatically, make another automatic switching formula of filtering among the parallelly connected filtering component prevent stifled type filter that the main part begins to use.
In order to achieve the above object, the utility model provides an automatic switching formula prevents stifled type filter, automatic switching formula prevents stifled type filter includes at least two sets of filtering component, filtering component includes:
the filter comprises a filter main body, a valve body and a valve body, wherein the filter main body is provided with an air inlet and an air outlet, and the air inlet or the air outlet of the filter main body is provided with the valve plate;
the valve plate driving mechanism comprises a driving cylinder and a push rod, and the free end of the push rod is connected with the valve plate;
a dispensing cylinder comprising a cylinder and a piston movably disposed within the cylinder; the cylinder body is provided with a first air inlet, a second air inlet, a first exhaust port and a second exhaust port; the first air inlet is communicated with the air inlet of the filtering main body, and the second air inlet is communicated with the air outlet of the filtering main body; the first air inlet and the first exhaust port are communicated or closed, and the second air inlet and the second exhaust port are communicated or closed in the moving process of the piston;
a manual exhaust valve is arranged on the second air inlet and used for opening or closing a loop between the air outlet and the second air inlet;
and a branch pipe is arranged on the first exhaust port, one branch of the branch pipe is communicated with the cylinder of the valve plate driving mechanism, and the other branch of the branch pipe is communicated with the second exhaust port of the other group of filtering assemblies.
In one embodiment, the piston divides the cylinder into a first chamber and a second chamber,
a first air passage and a second air passage are respectively formed at two ends of the piston, the first air passage is communicated with the first cavity, the second air passage is communicated with the second cavity, and the second air passage and the first air passage are arranged at intervals;
the piston moves in the distribution cylinder body, so that the first air passage is opposite to or staggered with the first exhaust port, the second air passage and the second exhaust port simultaneously, and the first air passage is communicated or closed with the first exhaust port, the second air passage and the second exhaust port.
In one embodiment, two ends of the piston are respectively provided with an annular groove which is arranged along the circumferential direction of the piston, one groove and the cylinder body form a first annular air passage, the other groove and the cylinder body form a second annular air passage which is communicated, and the second annular air passage and the first annular air passage are arranged at intervals;
a first through hole and a second through hole are respectively formed in the two top ends of the piston, the first through hole is communicated with the first annular air passage, and the second through hole is communicated with the second annular air passage;
the first annular air passage and the first through hole form the first air passage, and the second annular air passage and the second through hole form the second air passage.
In one embodiment, a first stop is disposed in the first chamber and between the first inlet and the first outlet;
and/or the second cavity is provided with a second stop block, and the second stop block is arranged on one side close to the second air inlet and far away from the second air outlet so as to limit the movement of the piston.
In one embodiment, the manual exhaust valve is disposed between the second exhaust port and the second stop.
In one embodiment, the manual purge valve comprises: the exhaust button, the manual piston exhaust passage, the second evacuation port and the second air inlet are arranged on the exhaust cover;
the top of the manual exhaust valve is provided with an exhaust button, the bottom of the manual exhaust valve is directly connected with the cylinder body, and the exhaust button is connected with the manual piston;
a second emptying port and a second air inlet are respectively arranged at the two sides of the manual exhaust valve in a high-low mode;
and a manual piston exhaust passage is arranged on the manual piston, and the manual piston moves in the manual exhaust valve to enable the second cavity to be communicated with the second exhaust port or the second cavity to be communicated with the second air inlet.
In an embodiment, the distribution cylinder further includes a balance spring and an adjusting handwheel, the adjusting handwheel is disposed on the cylinder body, the balance spring is located in the second cavity, one end of the balance spring abuts against the piston, and the other end of the balance spring abuts against the adjusting handwheel.
In an embodiment, the distribution cylinder further includes a damping lever located in the second cavity, the balance spring is sleeved on the damping lever, one end of the damping lever is connected with one end of the piston, which is abutted to the balance spring, and the other end of the damping lever extends into the cylinder body and is connected with the adjusting handwheel.
In one embodiment, at least two positioning assemblies are symmetrically arranged on two sides of the valve plate;
the positioning assembly comprises a guide sleeve and a guide rod, the guide sleeve and a pipeline of the air outlet of the filtering main body are arranged in parallel, one end of the guide rod is connected with the valve plate, and the other end of the guide rod extends into the guide sleeve and is in sliding fit with the guide sleeve.
In one embodiment, the valve plate is round platform form, the periphery of valve plate is formed with the slope curved surface, the pipeline export of filtering the main part gas outlet forms the horn mouth, the slope curved surface with the shape phase-match of horn mouth.
The utility model discloses technical scheme, through the distribution cylinder parallelly connected with the filtration main part, filter two main parts and parallelly connected, realize wherein one of them filtration main part filter core jam in the parallelly connected filtration main part, under the condition with the help of outside power, automatic switch says that another one filters the main part. The utility model discloses the whole switching process that realizes does not need artificial intervention, also need not special control system, when satisfying high-quality compressed air requirement, can also reduce compressed air maintainer, realizes low-cost control requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view (normal use state) of a distribution cylinder of an embodiment of the automatic switching anti-blocking filter of the present invention;
fig. 2 is a schematic structural view of a distribution cylinder (in a deactivated state after actuation) according to an embodiment of the automatic switching anti-blocking filter of the present invention;
FIG. 3 is a schematic structural view of a manual piston of a distribution cylinder according to an embodiment of the automatic switching type anti-blocking filter of the present invention;
FIG. 4 is a schematic structural view of a manual piston of a distribution cylinder according to an embodiment of the automatic switching type anti-blocking filter of the present invention;
FIG. 5 is a schematic view of a valve plate driving mechanism (in a non-activated state after activation) according to an embodiment of the automatic switching type anti-clogging filter of the present invention;
fig. 6 is a schematic view of a valve plate driving mechanism (in a normal use state) according to an embodiment of the automatic switching type anti-blocking filter of the present invention;
fig. 7 is a schematic view of a connection structure between a handle of a switching valve and a first loop and a second loop according to an embodiment of the automatic switching anti-blocking filter of the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
The embodiment of the utility model provides an in, state automatic switch-over formula and prevent stifled type filter and include at least two sets of filtering component.
It should be noted that the internal structures of the filter assemblies are the same; in this embodiment, two sets of filter assemblies are taken as an example, and the two sets of filter assemblies are respectively a first filter assembly and a second filter assembly. Taking the first filter assembly as an example, the internal structure of the first filter assembly is described in detail:
the first filter assembly includes: the filter body is a common filter comprising a filter element on the market, and the filter with various types on the market can be selected by the technical scheme, so that specific product types of the filter are not listed;
the filtering main body is provided with an air inlet and an air outlet, and a valve plate is arranged on the air inlet or the air outlet of the filtering main body;
the valve plate driving mechanism comprises a driving cylinder and a push rod, and the free end of the push rod is connected with the valve plate;
a dispensing cylinder comprising a cylinder and a piston movably disposed within the cylinder; the cylinder body is provided with a first air inlet, a second air inlet, a first exhaust port and a second exhaust port; the first air inlet is communicated with the air inlet of the filtering main body, and the second air inlet is communicated with the air outlet of the filtering main body; the first air inlet and the first exhaust port are communicated or closed, and the second air inlet and the second exhaust port are communicated or closed in the moving process of the piston;
a manual exhaust valve is arranged on the second air inlet and used for opening or closing a loop between the air outlet and the second air inlet;
and a branch pipe is arranged on the first exhaust port, one branch of the branch pipe is communicated with the cylinder of the valve plate driving mechanism, and the other branch of the branch pipe is communicated with the second exhaust port of the other group of the filtering main body assembly.
Specifically, with reference to fig. 1, 2 and 4, the distribution cylinder comprises a distribution cylinder block and a distribution cylinder piston; the distribution cylinder body is divided into a first cavity and a second cavity by a distribution cylinder piston. A first stop block is arranged on the connecting side of the first cavity and the distribution cylinder piston in the distribution cylinder body and used for limiting the moving range of the distribution cylinder piston to the first cavity; and a second stop block is arranged on the connecting side of the second cavity and the distribution cylinder piston and used for limiting the range of the distribution cylinder piston moving towards the second cavity.
It is worth mentioning that the first stopper and the second stopper function as: the piston is restricted from moving within a certain range within the dispensing cylinder and is ensured to stop at a proper position when the second chamber loses pressure, so that the high and second air rings and the corresponding air inlet and outlet ports are aligned.
The first air inlet is connected to the air inlet of the filter main body. The first exhaust port is communicated with a branch pipe (a compressed air hose), the branch pipe divides the compressed air into two paths, one path is connected with a driving cylinder in the valve plate driving mechanism, and the driving cylinder drives the valve plate body to move; the other path is connected to a second air outlet of the second filter assembly.
Specifically, referring to fig. 3, one side of the piston of the distribution cylinder contacting the first cavity is provided with a first annular air passage, and the first annular air passage is communicated with the first cavity through a first through hole, so that the compressed air of the first cavity can be distributed into the first annular air passage from the first through hole.
Specifically, one side that the distribution cylinder piston contacts the second chamber is equipped with second annular air flue, and second annular air flue passes through the second through-hole and communicates with the second chamber to make the compressed air of second chamber can distribute to in the second annular air flue from the second through-hole.
Specifically, the distribution cylinder further comprises a differential pressure adjusting hand wheel, a damping lever and a differential pressure balancing spring; the differential pressure regulating hand wheel is connected with the distribution cylinder piston through a damping lever, and the damping lever is provided with a differential pressure balance spring.
It is worth to be noted that, in order to prevent the reasons that the pressure in the second cavity is insufficient at the moment of compressed air ventilation of the filter main body and the like, which can cause malfunction of the distribution cylinder piston, the damping lever is arranged in the differential pressure balance spring, and a certain damping is applied to the movement of the distribution cylinder piston, so that a delay time exists when the distribution cylinder piston moves.
Specifically, be equipped with manual discharge valve on one side of distribution cylinder body second chamber, manual discharge valve includes: the exhaust button, the piston push rod return spring, the manual piston push rod, the manual piston exhaust passage, the second evacuation port and the second air inlet.
Specifically, the top of the manual exhaust valve is provided with an exhaust button, and the bottom of the manual exhaust valve is directly connected with the cylinder body of the distribution cylinder. And a second emptying port and a second air inlet are respectively arranged at the two sides of the manual exhaust valve in a high-low manner. The exhaust button is connected with a manual piston push rod through a piston push rod return spring, and the manual piston push rod is directly connected with a manual piston. And the manual piston exhaust passage is arranged on the manual piston, and when the exhaust button is pressed down, the position moved by the manual piston enables the manual piston exhaust passage to be connected with the second exhaust port.
The valve plate driving mechanism comprises a driving cylinder, a driving cylinder push rod, a valve plate body, a valve plate sealing surface, a valve plate positioning sleeve, an outlet pipeline sealing surface of a filtering main body and an outlet pipeline of the filtering main body.
Specifically, the driving cylinder is connected with the valve plate body through a driving cylinder push rod. The two sides of the valve plate body are respectively provided with the same valve plate positioning sleeve structures. The valve plate body is equipped with the valve plate sealed face with the export pipeline junction. An outlet pipeline sealing surface is arranged at the joint of the outlet pipeline and the valve plate body.
It should be noted that the outlet channel opening of the filtering main body is processed into a bell mouth shape, and the edge is processed tightly, so that the end surface of the filtering main body has good sealing performance; and a circular valve plate is designed, the angle of the rear inclined surface of the valve plate edge is the same as that of the rear inclined surface of the air outlet channel horn, and the sealing performance is enhanced by adopting precision machining. The valve plate uses two valve plate locating sleeves which are evenly distributed, and the locating sleeves have the function that the valve plate cannot incline when moving left and right. The valve plate body is connected with the driving air cylinder through the driving air cylinder push rod, and the driving air cylinder push rod can be pushed by the driving air cylinder to drive the valve plate body to move left and right. The driving cylinder is of a self-resetting structure, namely when driving air is not available, a push rod of the driving cylinder is in a retracted state.
A first air inlet of the distribution cylinder is connected with an air inlet of the filtering main body, and a second air inlet of the distribution cylinder is connected with an air outlet of the filtering main body; the first exhaust port of the distribution cylinder is connected with a valve plate driving mechanism, and the valve plate driving mechanism is connected with the air outlet of the filtering main body.
When the exhaust button of the distribution cylinder is pressed down, the second cavity is communicated with the atmosphere through the second evacuation port, the piston of the distribution cylinder moves towards the second cavity until the piston of the distribution cylinder is limited by the second stopper to move, and at the moment, the first air passage is just opposite to the first exhaust port, and meanwhile, the second air passage is just opposite to the second exhaust port. The dispensing cylinder is out of service with the filter body in the filter assembly.
The utility model discloses in arbitrary filtering component's theory of operation:
the filter elements of the filter main bodies with different properties have different requirements on the pressure difference between the inlet and the outlet of the filter main body. Consequently the utility model discloses in set up a differential pressure mediation hand wheel in the second chamber. Through tests, the differential pressure adjusting hand wheel is adjusted, and the differential pressure balancing spring is adjusted, so that the distribution cylinder piston can apply certain thrust to the first cavity side.
When the filtering main body works normally, the pressure at the inlet of the filtering main body is slightly higher than the pressure at the outlet of the filtering main body because the filter element in the filtering main body can filter out impurities in the gas. Setting the pressure in the first chamber directly communicated with the inlet of the filter main body to be p 1; the pressure in the second chamber, which is in direct communication with the outlet of the filtering body, is p 2; the pressure of the differential pressure balance spring is p 3. When the filter body is working normally and the filter cartridge is performing well, the pressure difference between the first chamber and the second chamber is fixed, i.e. p2+ p3 is p1, and with reference to fig. 1, the piston is in a static state. Referring to fig. 6, at this time, since compressed air is not present in the drive cylinder of the valve plate drive mechanism, the drive cylinder push rod does not operate. Therefore, the sealing surface of the valve plate and the sealing surface of the outlet pipeline are in an open state, and compressed air passes through the filter element from the inlet of the filtering main body to the outlet of the filtering main body and is normally supplied to the rear end. The filter body is normally used.
When the filter body is blocked, the pressure at the inlet of the filter body is much higher than the pressure at the outlet of the filter body because the gas passing through the filter element in the filter body is greatly reduced. The original balance of p1 and p2+ p3 is broken, and p1 is obviously larger than p2+ p 3. The pressure difference between the first chamber and the second chamber causes the distribution cylinder piston to move in the direction of the second chamber. When the piston of the distribution cylinder moves to the direction of the second cavity to communicate the first annular air passage and the first exhaust port, compressed air enters the driving cylinder of the valve plate driving mechanism from the first exhaust port. Referring to fig. 5, the compressed air drives the driving cylinder push rod to extend out, the valve plate body is pushed to move towards the outlet pipeline sealing surface, finally, the valve plate sealing surface is contacted with the outlet pipeline sealing surface to form sealing, and a compressed air outlet channel is cut off. Simultaneously, second annular air flue and second gas vent intercommunication, the second air inlet also is sealed because of distribution cylinder piston removes to the second chamber direction, and the compressed air of filtering the main part export can not get into the second chamber, and second annular air flue, second through-hole and second gas vent form the route, and the second chamber is to atmosphere pressure release, leads to pressure sharply to reduce, and distribution cylinder piston is by stable restriction on the right side. The clogged filter body is removed from service.
Example 2
In the embodiment of the utility model, the automatic switching anti-blocking filter comprises a switch valve handle besides all the structures in embodiment 1;
as shown in fig. 7, the control of the switch valve handle simultaneously controls the second exhaust port of the first filter assembly to be connected with the first exhaust port of the second filter assembly or connected with the atmosphere; and
the second air outlet of the second filter assembly is connected with the first air outlet of the first filter assembly or connected with the atmosphere.
The switch valve handle has two states: in the state 1, a second air outlet of a first filter assembly in the first filter assembly is connected with an atmosphere port of the first filter assembly, and a second air outlet of a second filter assembly in the second filter assembly is connected with a branch pipe of the first filter assembly;
and in the state 2, the second air outlet of the first filtering assembly in the first filtering assembly is connected with the branch pipe of the second filtering assembly, and the second air outlet of the second filtering assembly in the second filtering assembly is connected with the atmosphere opening of the second filtering assembly.
The first filter assembly branch pipe is connected with the first exhaust port in the first filter assembly; the second filter assembly leg is connected to the first vent in the second filter assembly.
Taking the state 1 as an example, the technical scheme of the utility model is further explained:
the exhaust button on the top of the manual exhaust valve of the filtering main body in the second filtering component is pressed, the manual piston moves downwards to shield the second air inlet firstly, so that the compressed air of the filtering main body cannot enter the second cavity through the second air inlet. When the manual piston moves downwards to a certain position, the exhaust passage of the manual piston is overlapped with the second exhaust opening, the pressure of the second cavity is immediately released to the atmosphere through the exhaust passage of the manual piston, and the pressure of the distribution cylinder is unbalanced, so that the piston of the distribution cylinder moves towards the direction of the second cavity. And in the moving process, the piston of the distribution cylinder shields the communication between the second cavity and the manual exhaust valve, so that the second cavity is not communicated with the second emptying port any more. The piston of the distribution cylinder moves to a certain position at the right side, and a first annular air passage on the piston of the distribution cylinder is communicated with the first exhaust port. The compressed air is divided into two parts through the branch pipe of the first exhaust port, one part of the compressed air enters the valve plate driving mechanism in the second filtering component, the valve plate is pushed by the air cylinder to move right to shield the outlet channel of the filtering main body in the second filtering component, and the loop enters a standby state.
In the embodiment, the first air inlet, the first exhaust port, the second exhaust port and the manual exhaust valve are all arranged on the same side of the cylinder body of the distribution cylinder; in other embodiments, the first intake port, the first exhaust port, the second exhaust port, and the manual exhaust valve may be on different sides of the distribution cylinder block, respectively, but the correspondence of the hole locations is not changed.
The above is only the optional embodiment of the present invention, and not therefore the scope of the present invention is limited, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the application directly/indirectly in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides an automatic switching formula prevents stifled type filter which characterized in that, automatic switching formula prevents stifled type filter includes at least two sets of filter assembly, filter assembly includes:
the filter comprises a filter main body, a valve body and a valve body, wherein the filter main body is provided with an air inlet and an air outlet, and the air inlet or the air outlet of the filter main body is provided with the valve plate;
the valve plate driving mechanism comprises a driving cylinder and a push rod, and the free end of the push rod is connected with the valve plate;
a dispensing cylinder comprising a cylinder and a piston movably disposed within the cylinder; the cylinder body is provided with a first air inlet, a second air inlet, a first exhaust port and a second exhaust port; the first air inlet is communicated with the air inlet of the filtering main body, and the second air inlet is communicated with the air outlet of the filtering main body; the first air inlet and the first exhaust port are communicated or closed, and the second air inlet and the second exhaust port are communicated or closed in the moving process of the piston;
a manual exhaust valve is arranged on the second air inlet and used for opening or closing a loop between the air outlet and the second air inlet;
and a branch pipe is arranged on the first exhaust port, one branch of the branch pipe is communicated with the cylinder of the valve plate driving mechanism, and the other branch of the branch pipe is communicated with the second exhaust port of the other group of filtering assemblies.
2. The automatic switching anti-clogging filter of claim 1, wherein said piston divides said cylinder into a first chamber and a second chamber,
a first air passage and a second air passage are respectively formed at two ends of the piston, the first air passage is communicated with the first cavity, the second air passage is communicated with the second cavity, and the second air passage and the first air passage are arranged at intervals;
the piston moves in the distribution cylinder body, so that the first air passage is opposite to or staggered with the first exhaust port, the second air passage and the second exhaust port simultaneously, and the first air passage is communicated or closed with the first exhaust port, the second air passage and the second exhaust port.
3. The automatic switching anti-clogging filter according to claim 2,
two ends of the piston are respectively provided with an annular groove which is arranged along the circumferential direction of the piston, one groove and the cylinder body form a first annular air passage, the other groove and the cylinder body form a second annular air passage which is communicated, and the second annular air passage and the first annular air passage are arranged at intervals;
a first through hole and a second through hole are respectively formed in the two top ends of the piston, the first through hole is communicated with the first annular air passage, and the second through hole is communicated with the second annular air passage;
the first annular air passage and the first through hole form the first air passage, and the second annular air passage and the second through hole form the second air passage.
4. The automatic switching anti-blocking filter according to claim 2, wherein a first stopper is disposed in the first chamber, and the first stopper is disposed between the first air inlet and the first air outlet;
and/or the second cavity is provided with a second stop block, and the second stop block is arranged on one side close to the second air inlet and far away from the second air outlet so as to limit the movement of the piston.
5. The automatically switching anti-clogging filter of claim 4, wherein said manual air release valve is disposed between said second air outlet and said second stopper.
6. The automatic switching anti-clogging filter according to claim 2,
the manual exhaust valve includes: the exhaust button, the manual piston exhaust passage, the second evacuation port and the second air inlet are arranged on the exhaust cover;
the top of the manual exhaust valve is provided with an exhaust button, the bottom of the manual exhaust valve is directly connected with the cylinder body, and the exhaust button is connected with the manual piston;
a second emptying port and a second air inlet are respectively arranged at the two sides of the manual exhaust valve in a high-low mode;
and a manual piston exhaust passage is arranged on the manual piston, and the manual piston moves in the manual exhaust valve to enable the second cavity to be communicated with the second exhaust port or the second cavity to be communicated with the second air inlet.
7. The automatic switching anti-blocking filter according to claim 2, wherein the distribution cylinder further comprises a balance spring and an adjusting handwheel, the adjusting handwheel is disposed on the cylinder body, the balance spring is located in the second cavity, one end of the balance spring abuts against the piston, and the other end of the balance spring abuts against the adjusting handwheel.
8. The automatic switching anti-blocking filter according to claim 7, wherein the distribution cylinder further comprises a damping lever located in the second chamber, the balance spring is sleeved on the damping lever, one end of the damping lever is connected with one end of the balance spring abutting against the piston, and the other end of the damping lever extends into the cylinder body and is connected with the adjusting handwheel.
9. The automatic switching type anti-blocking filter according to claim 1, wherein at least two positioning assemblies are symmetrically arranged on two sides of the valve plate;
the positioning assembly comprises a guide sleeve and a guide rod, the guide sleeve and a pipeline of the air outlet of the filtering main body are arranged in parallel, one end of the guide rod is connected with the valve plate, and the other end of the guide rod extends into the guide sleeve and is in sliding fit with the guide sleeve.
10. The automatic switching type anti-blocking filter according to claim 1, wherein the valve plate is in a circular truncated cone shape, an inclined curved surface is formed on the periphery of the valve plate, a bell mouth is formed at the outlet of the pipeline at the outlet of the filtering main body, and the inclined curved surface is matched with the bell mouth in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922060693.4U CN211273903U (en) | 2019-11-22 | 2019-11-22 | Automatic switching type anti-blocking filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922060693.4U CN211273903U (en) | 2019-11-22 | 2019-11-22 | Automatic switching type anti-blocking filter |
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| Publication Number | Publication Date |
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| CN211273903U true CN211273903U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922060693.4U Active CN211273903U (en) | 2019-11-22 | 2019-11-22 | Automatic switching type anti-blocking filter |
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| CN (1) | CN211273903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331703A (en) * | 2021-06-21 | 2021-09-03 | 宁波方太厨具有限公司 | Steaming and baking cooking equipment |
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2019
- 2019-11-22 CN CN201922060693.4U patent/CN211273903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331703A (en) * | 2021-06-21 | 2021-09-03 | 宁波方太厨具有限公司 | Steaming and baking cooking equipment |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Floor 2, No. 2, Longshan Fifth Road, Xinsheng Community, Longgang Street, Longgang District, Shenzhen, Guangdong 518100 Patentee after: Shenzhen Weihao purification equipment Co.,Ltd. Address before: 518000 Building 2, Qianqian Industrial Zone, No. 77, Xiangyin Road, Nanlian Community, Longgang Street, Longgang District, Shenzhen, Guangdong Patentee before: Shenzhen Weihao purification equipment Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |