CN211069344U - Filter differential pressure detection early warning device - Google Patents
Filter differential pressure detection early warning device Download PDFInfo
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- CN211069344U CN211069344U CN201921866762.4U CN201921866762U CN211069344U CN 211069344 U CN211069344 U CN 211069344U CN 201921866762 U CN201921866762 U CN 201921866762U CN 211069344 U CN211069344 U CN 211069344U
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Abstract
The utility model discloses a filter differential pressure detection early warning device, which comprises a valve plate driving mechanism, a driving cylinder and a valve plate connected with the driving cylinder; the distribution cylinder comprises a cylinder body and a piston movably arranged in the cylinder body, and the cylinder body is provided with a high-pressure exhaust port communicated with the driving cylinder; the piston moves in the cylinder body to open or close the high-pressure exhaust port, so that the driving cylinder drives the valve plate to close or open the outlet of the filter air outlet pipeline. The utility model aims at providing a can block the filter differential pressure detection early warning device of filter pipeline export of giving vent to anger automatically when compressed air cleanliness factor reduces and is not conform to the requirement.
Description
Technical Field
The utility model relates to a compressed air filters technical field, in particular to filter pressure differential detection early warning device.
Background
A large amount of manufacturing industries need factory compressed air, in the precision manufacturing industry, high requirements are placed on cleanliness of the compressed air, such as water content, oil content, dust content and the like, and the current technology mainly filters water, oil and dust in the compressed air through various types of filters.
However, in the actual use process, when the cleanliness of the compressed air is reduced and the requirement cannot be met, if a maintainer is neglected, the filter cannot be replaced in time and spare parts are not prepared in time, the filtering effect of the filter element of the filter cannot meet the process production requirement, and the compressed air which does not reach the standard is used in the production field, so that serious accidents such as product quality reduction, product scrapping and the like are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a filter differential pressure detects early warning device, but aims at providing one kind and can block the filter differential pressure that the filter outlet pipe says and export automatically when compressed air cleanliness factor reduces nonconforming with the requirement and detect early warning device.
In order to achieve the above object, the utility model provides a filter differential pressure detection early warning device for block the filter pipeline export of giving vent to anger, filter differential pressure detection early warning device includes:
the valve plate driving mechanism comprises a driving cylinder and a valve plate connected with the driving cylinder; and
the distribution cylinder comprises a cylinder body and a piston movably arranged in the cylinder body, and the cylinder body is provided with a high-pressure exhaust port communicated with the driving cylinder;
the piston moves in the cylinder body to open or close the high-pressure exhaust port, so that the driving cylinder drives the valve plate to close or open the outlet of the filter air outlet pipeline.
In one embodiment, the valve plate driving mechanism further comprises a guide sleeve and a guide rod, the guide sleeve and the filter air outlet pipeline 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, filter outlet duct export forms the horn mouth, the slope curved surface with the shape phase-match of horn mouth.
In one embodiment, the piston divides the cylinder body into a high pressure cavity and a low pressure cavity, the high pressure cavity is communicated with the air inlet of the filter, the low pressure cavity is communicated with the air outlet of the filter, a high pressure air passage is formed in the piston, and the high pressure air passage is communicated with the high pressure cavity;
the piston moves in the cylinder body, so that the high-pressure air passage is opposite to or staggered with the high-pressure exhaust port, and the high-pressure exhaust port is opened or closed.
In one embodiment, the cylinder body is further provided with a high-pressure air inlet and a low-pressure air inlet, the high-pressure cavity is communicated with the inlet of the filter through the high-pressure air inlet, and the low-pressure cavity is communicated with the outlet of the filter through the low-pressure air inlet;
when the high-pressure air passage and the high-pressure exhaust port are aligned, the piston closes the low-pressure air inlet.
In one embodiment, the cylinder body is further provided with a low-pressure exhaust port communicated with the atmosphere, the low-pressure exhaust port is arranged between the high-pressure exhaust port and the low-pressure air inlet, the piston is provided with a low-pressure air passage communicated with the low-pressure cavity, and the low-pressure air passage and the high-pressure air passage are arranged at intervals;
when the high-pressure air passage and the high-pressure exhaust port are aligned, the low-pressure air passage is communicated with the atmosphere through the low-pressure exhaust port.
In one embodiment, the distribution cylinder further comprises a balance spring and an adjusting hand wheel, the adjusting hand wheel is arranged on the cylinder body, the balance spring is located in the low-pressure cavity, one end of the balance spring is abutted to the piston, and the other end of the balance spring is abutted to the adjusting hand wheel.
In an embodiment, the distribution cylinder further includes a pressure cylinder and a damping rod located in the low-pressure cavity, the balance spring is sleeved on the pressure cylinder and the damping rod, the pressure cylinder is fixedly located on the cylinder body, one end of the damping rod is abutted to one end of the piston by the balance spring, and the other end of the damping rod extends into the pressure cylinder and is in sliding fit with the pressure cylinder.
In one embodiment, the high-pressure air passage comprises a first annular air passage and a first through hole, the first annular air passage is formed along the circumferential direction of the piston, the first through hole is formed in the end face, close to the high-pressure air passage, of the piston, and the first through hole is communicated with the first annular air passage;
and/or the low-pressure air passage comprises a second annular air passage and a second through hole, the second annular air passage is formed along the circumferential direction of the piston, the second annular air passage and the first annular air passage are arranged at intervals, the second through hole is formed in the end face, close to the low-pressure air passage, of the piston, and the second through hole is communicated with the second annular air passage.
In one embodiment, a high pressure stop is arranged in the high pressure cavity and is arranged between the high pressure air inlet and the high pressure air outlet so as to limit the movement of the piston;
and/or the low pressure cavity is provided with a low pressure stop block which is arranged at one side close to the low pressure air inlet and far away from the low pressure air outlet so as to limit the movement of the piston.
The utility model discloses technical scheme is through being equipped with valve plate actuating mechanism and distribution cylinder, and valve plate actuating mechanism includes and drives actuating cylinder and with the valve plate that drives actuating cylinder and be connected, and the distribution cylinder includes that cylinder body and movably locate this internal piston of cylinder, and the cylinder body is equipped with the high-pressure gas vent that the intercommunication drove actuating cylinder, and the piston removes in cylinder body to open or closed high-pressure gas vent, so that drive actuating cylinder drive valve plate closure or open the export of filter outlet duct. The utility model discloses can block the filter automatically when compressed air cleanliness factor reduces and is not conform to the requirement and give vent to anger the pipeline export to the compressed air passageway that realizes the filter export is closed, has avoided unqualified compressed air to send into the workshop through this filter.
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 of an embodiment of a distribution cylinder according to the present invention;
fig. 2 is a schematic structural view of an embodiment of the distribution cylinder of the present invention;
fig. 3 is a schematic structural view of the piston of the present invention;
FIG. 4 is a schematic structural view of an embodiment of the valve plate driving mechanism of the present invention;
FIG. 5 is a schematic structural view of an embodiment of the valve plate driving mechanism of the present invention;
fig. 6 is a schematic view of the installation structure of the filter and valve plate driving mechanism 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.
The utility model provides a filter pressure differential detection early warning device for block the filter pipeline export of giving vent to anger.
Referring to fig. 1, fig. 2, fig. 4 and fig. 5, in an embodiment of the present invention, the filter differential pressure detection and early warning apparatus includes a valve plate driving mechanism 1 and a distribution cylinder 2, wherein the valve plate driving mechanism 1 includes a driving cylinder 11 and a valve plate 12 connected to the driving cylinder 11; the distribution cylinder 2 comprises a cylinder body 21 and a piston 22 movably arranged in the cylinder body 21, and the cylinder body 21 is provided with a high-pressure exhaust port 214 communicated with the driving cylinder 11; piston 22 moves within cylinder body 21 to open or close high pressure exhaust port 214, so that driving cylinder 11 drives valve plate 12 to close or open the filter outlet conduit outlet.
It can be understood that piston 22 elastically abuts against the inner wall of cylinder body 21 and axially moves relative to cylinder body 21, and high-pressure exhaust port 214 is opened or closed during axial movement of piston 22, so that driving cylinder 11 drives valve plate 12 to close or open the outlet of filter outlet pipe.
The utility model discloses technical scheme is through being equipped with valve plate actuating mechanism and distribution cylinder, and valve plate actuating mechanism includes and drives actuating cylinder and with the valve plate that drives actuating cylinder and be connected, and the distribution cylinder includes that cylinder body and movably locate this internal piston of cylinder, and the cylinder body is equipped with the high-pressure gas vent that the intercommunication drove actuating cylinder, and the piston removes in cylinder body to open or closed high-pressure gas vent, so that drive actuating cylinder drive valve plate closure or open the export of filter outlet duct. The utility model discloses can block the filter automatically when compressed air cleanliness factor reduces and is not conform to the requirement and give vent to anger the pipeline export to the compressed air passageway that realizes the filter export is closed, has avoided unqualified compressed air to send into the workshop through this filter.
In this embodiment, as shown in fig. 4, 5 and 6, the valve plate driving mechanism 1 further includes a positioning assembly 13, the positioning assembly 13 includes a guide sleeve 131 and a guide rod 132, the guide sleeve 131 is disposed in parallel with the filter outlet pipe, one end of the guide rod 132 is connected to the valve plate 12, and the other end of the guide rod 132 extends into the guide sleeve 131 and is in sliding fit with the guide sleeve 131.
In this embodiment, there are two positioning assemblies 13 symmetrically disposed on two sides of the filter outlet duct, and when the driving cylinder 11 drives the valve plate 12 to close or open the outlet of the filter outlet duct, the positioning assemblies 13 limit the moving direction of the valve plate 12, thereby playing a guiding role. When compressed air is communicated with the driving cylinder 11, the valve plate 12 is driven by the driving cylinder 11 to move towards the outlet direction of the filter air outlet pipeline along the direction of sliding fit of the guide rod 132 and the guide sleeve 131, so that the outlet of the pipeline is blocked, and the compressed air channel at the outlet of the filter is closed.
As shown in fig. 4, 5 and 6, in the present embodiment, the valve plate 12 is in the shape of a circular truncated cone, the periphery of the valve plate 12 is formed with an inclined curved surface, the outlet of the filter outlet duct is formed with a bell mouth, and the inclined curved surface matches the shape of the bell mouth.
The filter outlet pipe says and exports processing horn mouth shape into, and the side precision finishing is in order to obtain good leakproofness in the horn mouth shape of horn mouth, and in this embodiment, for the horn mouth shape of cooperation pipeline export, valve plate 12 is the round platform form, and the lateral surface of valve plate 12 is the slope curved surface, and the angle of slope curved surface is the same with the horn mouth angle of pipeline export, the slope curved surface is sealed in order to realize with the filter outlet pipe way laminating. Valve plate 12 moves toward the outlet of the filter outlet pipeline along the direction of sliding fit of guide rod 132 and guide sleeve 131 under the drive of driving motor 11, so that the inclined curved surface of valve body 12 is attached to the bell mouth of the outlet of the pipeline, thereby achieving the sealing effect and blocking the passage of unqualified compressed air from the outlet of the filter outlet pipeline.
In the embodiment, the piston 22 divides the cylinder body 21 into a high pressure cavity 211 and a low pressure cavity 212, the high pressure cavity 211 is communicated with the air inlet of the filter, the low pressure cavity 212 is communicated with the air outlet of the filter, a high pressure air passage 221 is formed on the piston 22, and the high pressure air passage 221 is communicated with the high pressure cavity 211;
the piston 22 moves within the cylinder body 21 such that the high-pressure air passage 221 is aligned with or misaligned with the high-pressure exhaust port 214 to open or close the high-pressure exhaust port 214.
In this embodiment, the high pressure chamber 211 communicates with the filter inlet and the low pressure chamber 212 communicates with the filter outlet, defining the pressure in the high pressure chamber 211 as P1 and the pressure in the low pressure chamber 212 as P2.
When the filter element has good performance, the pressure loss is a fixed value, at this time, P1 is equal to P2, the piston 22 located in the cylinder body 21 is in a static state, the high-pressure air passage 221 and the high-pressure air outlet 214 are staggered, no compressed air is introduced into the driving cylinder 11, and the valve plate 12 opens the outlet of the filter air outlet pipeline to realize normal air supply.
When the filter cartridge is clogged, the filtering effect is reduced, the balance of P1 ═ P2 is broken, and P1> P2 causes the piston 22 to move, i.e., the piston 22 moves from the high pressure chamber 211 to the low pressure chamber 212. When the pressure difference reaches a specific value, namely when the piston 22 moves to a specific position, the high-pressure air passage 221 of the piston 22 is opposite to the high-pressure air outlet 214, compressed air is introduced into the driving cylinder 11 through the high-pressure air passage 221 and the high-pressure air outlet 214, and the driving cylinder 11 is introduced with the compressed air and then drives the valve plate 12 to move towards the outlet of the filter air outlet pipeline so as to block the outlet of the filter air outlet pipeline and stop air supply.
The technical scheme of the utility model is that the valve plate driving mechanism 1 and the distribution cylinder 2 are arranged, the valve plate driving mechanism 1 comprises a driving cylinder 11 and a valve plate 12 connected with the driving cylinder 11, and the valve plate 12 is arranged near the filter air outlet pipeline; the distribution cylinder 2 comprises a cylinder body 21 and a piston 22, the piston 22 is elastically attached to the inner wall of the cylinder body 21, the cylinder body 21 is divided into a high-pressure cavity 211 and a low-pressure cavity 222, the high-pressure cavity 211 is communicated with a filter air inlet, the low-pressure cavity 222 is communicated with a filter air outlet, a high-pressure exhaust port 214 is further formed in the cylinder body 21, the high-pressure exhaust port 214 is communicated with a driving cylinder 11, a high-pressure air passage 221 is formed in the piston 22, and the high-pressure air passage 221 is communicated with the high-pressure cavity. When the filtering effect of the filter element is reduced to cause the pressure difference between the front and the back of the filter to be increased, the piston 22 moves under the action of the pressure difference under the condition of not using external power, namely moves from the high-pressure cavity 211 to the low-pressure cavity 212, when the pressure difference between the front and the back of the filter is increased to a certain value, the piston 22 moves to the position where the high-pressure air channel 221 is opposite to the high-pressure air outlet 214, the compressed air is communicated with the driving cylinder 11, and the driving cylinder 11 drives the valve plate 12 to close the outlet of the. The utility model discloses can block the filter automatically when compressed air cleanliness factor reduces and is not conform to the requirement and give vent to anger the pipeline export to the compressed air passageway that realizes the filter export is closed, has avoided unqualified compressed air to send into the workshop through this filter.
In the present embodiment, as shown in fig. 1 and 2, the cylinder body 21 is further provided with a high pressure inlet port 213 and a low pressure inlet port 216, wherein the high pressure chamber 211 communicates with the filter inlet through the high pressure inlet port 213, and the low pressure chamber 212 communicates with the filter outlet through the low pressure inlet port 216; when the high pressure air passage 221 is aligned with the high pressure exhaust port 214, the piston 22 closes the low pressure intake port 216. When the high-pressure air channel 221 is opposite to the high-pressure air outlet 214, that is, the compressed air is communicated with the driving cylinder 11, the valve plate 12 closes the outlet of the filter air outlet pipeline under the driving of the driving cylinder 11, the pressure P1 of the high-pressure cavity 211 will drop, and the pressure at the outlet of the filter will rise due to the blocked outlet of the low-pressure cavity 212, so as to avoid that the pressure at the outlet of the filter enters the low-pressure cavity 212 to cause the rise of P2, thereby damaging the balance of the piston 22, therefore, the piston 22 closes the low-pressure air inlet 216, so that the stability of the piston 22 is ensured, and no movement occurs, so that the compressed air can be stably output from the high-pressure air outlet 214, the valve body 12 is driven to close the outlet of the filter.
In the present embodiment, as shown in fig. 1 and fig. 2, the cylinder body 21 is further provided with a low pressure exhaust port 215 communicated with the atmosphere, the low pressure exhaust port 215 is provided between the high pressure exhaust port 214 and the low pressure intake port 216, the piston 22 is provided with a low pressure air passage 222 communicated with the low pressure cavity 212, and the low pressure air passage 222 is provided at an interval from the high pressure air passage 221; when the high pressure air passage 221 is aligned with the high pressure exhaust port 214, the low pressure air passage 222 communicates with the atmosphere through the low pressure exhaust port 215. The stability of the piston 22 can be further improved by adding the low pressure exhaust port 215, when the high pressure air passage 221 is opposite to the high pressure exhaust port 214, that is, the compressed air is communicated with the driving cylinder 11, the low pressure exhaust port 215 is communicated to the low pressure cavity 212 through the low pressure air passage 222, and because the low pressure cavity 212 is the filtered compressed air, the pressure of the compressed air is higher than the atmospheric pressure, the low pressure cavity 212 can be rapidly decompressed, the position of the piston 22 is stabilized, and the compressed air is stably output to the driving cylinder 11.
In this embodiment, the distribution cylinder 2 is further provided with a differential pressure adjusting assembly 3, the differential pressure adjusting assembly 3 includes a balance spring 31 and an adjusting handwheel 32, the adjusting handwheel 32 is provided on the cylinder body 21, the balance spring 31 is located in the low-pressure cavity 212, one end of the balance spring 31 abuts against the piston 22, and the other end of the balance spring 31 abuts against the adjusting handwheel 32.
In normal operation, even if the filter is in a good state and is not blocked, the pressure of the air outlet of the filter is lower than that of the air inlet of the filter due to the existence of the filter element, so that pressure difference exists between the air inlet and the air outlet, and the inlet and outlet pressure difference of different filter elements is different. Therefore, the utility model discloses having increased differential pressure adjustment subassembly 3, having increased differential pressure adjustment subassembly 3 at the low pressure chamber 212 that communicates filter gas outlet one side promptly, when making initial condition, increase a spring force and make piston 22 remain stable.
Defining the pressure provided by the balance spring 31 as P3, due to the existence of the filter element, in general, the pressure P1 of the high pressure chamber is greater than the pressure P2 of the low pressure chamber, and the pressure P3 of the balance spring 31 is adjusted by the adjusting hand wheel 32 to make P1 equal to P2+ P3, in the case of good filter element, the pressure loss is a fixed value, i.e. the pressures on both sides of the piston 22 are equal, the piston 22 is in a static state, at this time, the high pressure exhaust port 214 is closed, the valve plate 12 opens the outlet of the filter outlet pipeline, and the filtered compressed air is sent out through the outlet of the filter outlet pipeline.
In this embodiment, the distribution cylinder 2 further includes a damping lever 4, the damping lever 4 includes a pressure cylinder 41 and a damping rod 42 located in the low-pressure cavity 212, the balance spring 31 is sleeved on the pressure cylinder 41 and the damping rod 42, the pressure cylinder 41 is fixedly disposed on the cylinder body 21, one end of the damping rod 42 is connected to one end of the balance spring 31 abutting against the piston 22, and the other end of the damping rod 42 extends into the pressure cylinder 41 and is in sliding fit with the pressure cylinder 41. To prevent the filter from building up pressure in the low pressure chamber 212 for a short period of time during the instant the compressed air is vented, causing the piston 22 to malfunction. Therefore, the damping lever 4 is arranged in the low pressure chamber 212, the damping rod 42 of the damping lever is connected with the balance spring 31, the pressure of the high pressure chamber 211 is increased instantly at the ventilation instant, and when the low pressure chamber 212 has no pressure temporarily, a certain damping effect is exerted on the operation of the piston 22, so that a delay time exists when the piston 22 moves from the high pressure chamber 211 to the low pressure chamber 212.
As shown in fig. 3, in the present embodiment, the high pressure air passage 221 includes a first annular air passage 221a and a first through hole 221b, the first annular air passage 221a is opened along the circumferential direction of the piston 22, the first through hole 221b is opened in the piston 22 and is close to the end surface of the high pressure air passage 221, and the first through hole 221b is communicated with the first annular air passage 221 a.
As shown in fig. 3, in the present embodiment, the low pressure air passage 222 includes a second annular air passage 222a and a second through hole 222b, the second annular air passage 222a is opened along the circumferential direction of the piston 22, the second annular air passage 222a and the first annular air passage 221a are arranged at an interval, the second through hole 222b is opened in the end surface of the piston 22 close to the low pressure air passage 222, and the second through hole 222b is communicated with the second annular air passage 222 a.
The utility model discloses a high pressure air flue 221 and low pressure air flue 222 all adopt the mode setting that annular air flue and through-hole are linked together. The high-pressure air passage 221 and the low-pressure air passage 222 are arranged on the piston 22 at intervals and do not affect each other, and the design of the annular air passages also ensures that the circumferential pressure of the piston 22 is uniformly distributed.
As shown in fig. 1 and 5, when the filter works normally, the filter inlet communicates with the high-pressure chamber 211, communicates with the first annular air passage 221a through the first through hole 221b, and the filter outlet communicates with the low-pressure chamber 212, communicates with the second annular air passage 222a through the second through hole 222b, and adjusts the pressure P3 of the balance spring 31 by the adjusting handwheel 32, so that P1 is P2+ P3, and the piston 22 is in a static state. At this time, the high pressure air passage 221 on the piston 22 is staggered with the high pressure exhaust port 214 on the cylinder body 21, that is, no compressed air is introduced into the driving cylinder 11, and the driving cylinder 11 does not act; the low pressure air passage 222 on the piston 22 is staggered with the low pressure exhaust port 215 on the cylinder body 21, i.e., the low pressure chamber 212 is communicated to the filter outlet port, and the low pressure chamber 212 is kept in a pressure state.
As shown in fig. 2, 4 and 6, when the filter is clogged, the filtering effect is decreased and the original balance is broken, in which case P1> P2+ P3, the piston 22 moves toward the low pressure chamber 212 by the pressure difference. When the piston 22 moves to a specific position, the high pressure gas passage 221 communicates with the high pressure gas exhaust port 214, and simultaneously, the low pressure gas passage 222 communicates with the low pressure gas exhaust port 215. The compressed air is communicated to the driving cylinder 11 through the high-pressure air passage 221, the driving cylinder 11 drives the valve plate 12 to close the outlet of the filter air outlet pipeline, meanwhile, the low-pressure cavity 212 is communicated to the atmosphere to be rapidly decompressed, so that the pressure is rapidly reduced, and the piston 22 is stably limited on one side of the low-pressure cavity 212.
In the present embodiment, a high pressure block 5 is disposed in the high pressure chamber 211, and the high pressure block 5 is disposed between the high pressure inlet 213 and the high pressure outlet 214 to limit the movement of the piston 22; and/or the low pressure chamber 212 is provided with a low pressure stop 6, and a low pressure stop 5 is provided at a side adjacent to the low pressure inlet 216 and away from the low pressure outlet 215 to limit the movement of the piston 22.
The purpose of the high pressure stop 5 and the low pressure stop 6 is to limit the range of movement of the piston 22, and also to provide a positioning function to ensure that the piston 22 stops at the correct position. When the piston 22 loses balance and moves towards the low pressure cavity 212, the low pressure stop 6 can limit the moving range of the piston 22, and when the piston 22 stops, the high pressure air passage 221 on the piston 22 is communicated with the high pressure exhaust port 214, and the low pressure air passage 222 on the piston 22 is communicated with the low pressure exhaust port 215.
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 a filter pressure difference detects early warning device for block filter outlet pipe says the export, its characterized in that, filter pressure difference detects early warning device includes:
the valve plate driving mechanism comprises a driving cylinder and a valve plate connected with the driving cylinder; and
the distribution cylinder comprises a cylinder body and a piston movably arranged in the cylinder body, and the cylinder body is provided with a high-pressure exhaust port communicated with the driving cylinder;
the piston moves in the cylinder body to open or close the high-pressure exhaust port, so that the driving cylinder drives the valve plate to close or open the outlet of the filter air outlet pipeline.
2. The filter differential pressure detection and early warning device as recited in claim 1, wherein the valve plate driving mechanism further comprises a guide sleeve and a guide rod, the guide sleeve is arranged in parallel with the filter air outlet pipeline, 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.
3. The filter differential pressure detection early warning device of claim 1, wherein the valve plate is in a shape of a circular truncated cone, an inclined curved surface is formed on the periphery of the valve plate, a bell mouth is formed at the outlet of the filter air outlet pipeline, and the inclined curved surface is matched with the bell mouth in shape.
4. The filter differential pressure detection and early warning device as recited in any one of claims 1 to 3, wherein the piston divides the cylinder body into a high pressure chamber and a low pressure chamber, the high pressure chamber is communicated with the filter air inlet, the low pressure chamber is communicated with the filter air outlet, a high pressure air passage is opened on the piston, and the high pressure air passage is communicated with the high pressure chamber;
the piston moves in the cylinder body, so that the high-pressure air passage is opposite to or staggered with the high-pressure exhaust port, and the high-pressure exhaust port is opened or closed.
5. The filter differential pressure detection and early warning device as recited in claim 4, wherein the cylinder body is further provided with a high pressure inlet port and a low pressure inlet port, the high pressure chamber is communicated with the filter inlet through the high pressure inlet port, and the low pressure chamber is communicated with the filter outlet through the low pressure inlet port;
when the high-pressure air passage and the high-pressure exhaust port are aligned, the piston closes the low-pressure air inlet.
6. The filter differential pressure detection and early warning device as recited in claim 5, wherein the cylinder body is further provided with a low-pressure exhaust port communicated with the atmosphere, the low-pressure exhaust port is arranged between the high-pressure exhaust port and the low-pressure air inlet, the piston is provided with a low-pressure air passage communicated with the low-pressure cavity, and the low-pressure air passage and the high-pressure air passage are arranged at intervals;
when the high-pressure air passage and the high-pressure exhaust port are aligned, the low-pressure air passage is communicated with the atmosphere through the low-pressure exhaust port.
7. The filter differential pressure detection and early warning device as claimed in claim 4, wherein the distribution cylinder further comprises a balance spring and an adjusting hand wheel, the adjusting hand wheel is arranged on the cylinder body, the balance spring is located in the low-pressure cavity, one end of the balance spring is abutted against the piston, and the other end of the balance spring is abutted against the adjusting hand wheel.
8. The filter differential pressure detection and early warning device as claimed in claim 7, wherein the distribution cylinder further comprises a pressure cylinder and a damping rod which are located in the low-pressure cavity, the balance spring is sleeved on the pressure cylinder and the damping rod, the pressure cylinder is fixedly arranged on the cylinder body, one end of the damping rod is connected with one end of the piston which is abutted to the balance spring, and the other end of the damping rod extends into the pressure cylinder and is in sliding fit with the pressure cylinder.
9. The filter differential pressure detection and early warning device as recited in claim 6, wherein the high-pressure air passage comprises a first annular air passage and a first through hole, the first annular air passage is formed along the circumferential direction of the piston, the first through hole is formed in the end surface, close to the high-pressure air passage, of the piston, and the first through hole is communicated with the first annular air passage;
and/or the low-pressure air passage comprises a second annular air passage and a second through hole, the second annular air passage is formed along the circumferential direction of the piston, the second annular air passage and the first annular air passage are arranged at intervals, the second through hole is formed in the end face, close to the low-pressure air passage, of the piston, and the second through hole is communicated with the second annular air passage.
10. The filter differential pressure detection and early warning device as recited in claim 6, wherein a high pressure stop is disposed in the high pressure chamber, the high pressure stop being disposed between the high pressure inlet and the high pressure outlet to limit movement of the piston;
and/or the low pressure cavity is provided with a low pressure stop block which is arranged at one side close to the low pressure air inlet and far away from the low pressure air outlet so as to limit the movement of the piston.
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|---|---|---|---|
| CN201921866762.4U CN211069344U (en) | 2019-10-30 | 2019-10-30 | Filter differential pressure detection early warning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921866762.4U CN211069344U (en) | 2019-10-30 | 2019-10-30 | Filter differential pressure detection early warning device |
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| CN211069344U true CN211069344U (en) | 2020-07-24 |
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| CN201921866762.4U Active CN211069344U (en) | 2019-10-30 | 2019-10-30 | Filter differential pressure detection early warning device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203517A (en) * | 2021-04-26 | 2021-08-03 | 上海冉能自动化科技有限公司 | Air pressure detection method |
| CN113582359A (en) * | 2021-08-05 | 2021-11-02 | 中奥生态环境股份有限公司 | Be applied to sewage treatment plant that water environment was administered |
-
2019
- 2019-10-30 CN CN201921866762.4U patent/CN211069344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203517A (en) * | 2021-04-26 | 2021-08-03 | 上海冉能自动化科技有限公司 | Air pressure detection method |
| CN113582359A (en) * | 2021-08-05 | 2021-11-02 | 中奥生态环境股份有限公司 | Be applied to sewage treatment plant that water environment was administered |
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| 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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