CN213408056U - Integrated filtering back-blowing respirator - Google Patents

Abstract

The utility model provides a filterable blowback respirator of integrated form, exhaust passage and gas storage gasbag are integrated on casing upper portion, the space of saving device. The shell consists of an upper part and a lower part, and is fastened and sealed by a fastener. The lower part of the shell is provided with a filter element, and the upper part of the filter element is provided with an air blowing channel; the air channel pipeline part is positioned at the upper part of the shell, and one end of the air channel pipeline part extends into the air blowing channel at the upper part of the filter element. An exhaust channel coaxial with the blowing channel is arranged above the air channel pipeline in the upper part of the shell, a sealing plate is coaxially and fixedly arranged on the exhaust channel, static seals are formed between the outer edge of the sealing plate, the outer edge of the exhaust channel and the inner wall of the upper part of the shell in pairs, and a sealing space defined by the upper side of the sealing plate, the outer side of the exhaust channel and the inner side of the upper part of the shell forms an air storage air bag; compressed gas in the gas storage air bag enters the blowing channel through the gas channel, and the gas expands and vibrates instantly, so that dust adsorbed on the filter element is blown off.

Description

Integrated filtering back-blowing respirator

Technical Field

The utility model relates to a dust gas breathes the field, especially, relates to the blowback respirator of battery field powder processing feed bin.

Background

In the occasions of battery manufacturing, food, medicine and the like which relate to the processing of powder materials, after the powder materials enter the bin, air in the bin is extruded by the materials and discharged out of the bin. However, after the materials enter the storage bin, part of the materials can be mixed with air and then discharged out of the storage bin along with the air, and particularly, when toxic powder materials are leaked, environmental pollution and personnel injury can be caused. When the respirator adopting the filter element or the filter bag is used for filtering, the filter element or the filter bag is easily adsorbed and accumulated by dust along with the increase of the filtering times, so that the filtering effect is poor. Therefore, in the application scenario, the respirator needs to have the function of back-flushing and cleaning the filter element while filtering dust.

In order to solve the problem of dust accumulation on the filter element, fig. 1 is a schematic diagram of a blowback respirator in the prior art. Wherein, 1 is an exhaust channel, 2 is a gas storage air bag which provides blowing power for regular back blowing and ash removal, 4 is a filter element, and the upper part of the filter element is provided with a blowing channel 5. And 3, an air inlet pipeline, wherein one end of the air inlet pipeline is connected with the air storage air bag positioned outside the shell, the other end of the air inlet pipeline is positioned inside the shell and connected with the air blowing channel, and a pulse electromagnetic valve is arranged on the part of the air inlet pipeline positioned outside the shell. The specific working principle is as follows: dust accumulation in the filter element blocks the filter element, and the dust removal effect is poor. The outside compressed air source inflates the air storage air bag, when regular back flushing is needed, the electric control system controls the pulse electromagnetic valve to be opened, compressed air in the air storage air bag enters the shell from the outside of the shell along the air inlet pipeline, the tail end of the air inlet pipeline in the air inlet channel is sprayed out, the instant expansion vibration enables adsorbed dust on the surface of the filter element to fall down, and after the back flushing is completed, residual air rises back and is discharged from the exhaust channel which is coaxial with the air inlet channel. However, in the existing back-blowing respirator, because the gas storage airbag is arranged externally, the prior art needs to be provided with a hose to connect an external gas circuit, and meanwhile, the gas storage airbag also occupies an external space, so that the difficulty in arrangement of the back-blowing respirator is increased. Moreover, the air inlet pipeline is partially vertically arranged in the shell, so that the occupied space is large.

Further, there are also some prior art designs that begin to integrate the components of the blow-back respirator in order to reduce the space occupied by the blow-back respirator. Fig. 2 shows a patent of the prior art, which is a chinese utility model: 201920804867.0, which differs from the prior art shown in fig. 1 in that the air inlet line 5 is integrated with the air bag 7. Specifically, the external air source inflates the air bag 7, after the air in the air bag 7 reaches a certain pressure, the pulse valve is closed, the air blowing channel is opened, the compressed air in the air bag 7 enters the air blowing pipe and is blown back to the metal filter 2 located below the air blowing pipe, the arrangement of an air inlet pipeline is reduced, and the occupied space of equipment can be reduced to a certain extent. However, in the process of back flushing, the exhaust valve 12 needs to be manually closed; after the back blowing is finished, the exhaust valve arranged on the exhaust pipeline 11 outside the shell needs to be opened manually in the process of exhausting the back-rising residual air, so that the residual air in the shell is exhausted through the exhaust pipeline 11, and the operation steps are increased. And the exhaust pipeline 11 is positioned at the lower part of the air inlet pipeline 5, when back blowing is carried out, part of air enters the exhaust pipeline to impact the exhaust valve, and the pneumatic power of back blowing is lost. In addition, although the respirator can repeatedly perform back blowing, the air bag, the air inlet pipeline and the exhaust pipeline are sealed and are not communicated with the outside in the process of single back blowing. Before the back blowing, air exists in the sealed whole body, and the air cannot be discharged in the whole back blowing process. The back flushing depends on the impact force formed by the air pressure difference between the inside and the outside of the air inlet pipe, when the compressed air in the air inlet pipeline instantly enters the closed space, the movement speed of the air is slowed down when no pressure difference exists, and the effect of impact dust removal is avoided.

To sum up, when filtering and the filter core dust removal to discharge air in the feed bin, blowback respirator among the prior art leads to having the problem that occupies exterior space big because external gasbag leads to, equipment layout is difficult, or adopts the not good problem of single blowback effect that air inlet pipe and gas bag integrated mode lead to.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an integrated form filters blowback respirator. In order to save the occupied space of the respirator and improve the effect of removing dust adsorbed on the filter element. The utility model adopts the following technical scheme:

the integrated filtering back-blowing respirator comprises a shell and an air channel pipeline, wherein the shell consists of an upper part and a lower part, the lower part is provided with a filter element, and the upper part of the filter element is an air blowing channel;

the air channel pipeline part is positioned at the upper part of the shell, one end of the air channel pipeline part extends into the air blowing channel at the upper part of the filter element, an exhaust channel which is coaxial with the air blowing channel is arranged above the air channel pipeline, a sealing plate is coaxially and fixedly arranged on the exhaust channel, the outer edge of the sealing plate, the outer edge of the exhaust channel and the inner wall of the upper part of the shell form static seal in pairs, and a sealed space defined by the upper side of the sealing plate, the outer side of the exhaust channel and the;

the other end of the gas path channel is positioned outside the shell and is connected with the gas storage airbag, and the gas storage airbag positioned at the upper part of the shell is communicated with the gas blowing channel positioned at the lower part of the shell;

the part of the gas circuit pipeline positioned outside the shell is provided with a pulse solenoid valve.

In the scheme, the upper part of the shell comprises a part of gas path pipeline, and the gas storage airbag and the exhaust channel are integrated on the upper part of the shell. Specifically, the outer edge of the sealing plate, the outer edge of the exhaust channel and the inner wall of the upper part of the shell form static seal in pairs. The sealing plate separates the air passage pipe in the upper portion of the housing from the air storage bag, which is defined by the upper side of the sealing plate, the outer side of the exhaust passage, and the inner side of the upper portion of the housing. When the back blowing is needed, the control system provides an electromagnetic valve action signal, the pulse electromagnetic valve is opened on the gas circuit pipeline outside the shell, compressed gas passes through the gas circuit pipeline, the gas storage air bag on the upper portion of the shell sequentially passes through the gas circuit pipeline on the lower portion of the sealing plate and the blowing channel on the upper portion of the filter element along the gas circuit pipeline, due to the difference of the gas pressure inside and outside the gas circuit pipeline, gas in the gas circuit pipeline gushes out, the instant expansion vibration blows off dust accumulated on the filter element, and powder materials fall back into a storage bin on the lower portion of the filter element from the filter. Because the exhaust channel is positioned above the air outlet of the air path pipeline, the exhaust channel does not need to be closed in the air blowing process, and the external air pressure is always equal to the air pressure in the filter element, so that the air blowing process is more sufficient. After the blowing is finished, the residual air rises again, passes through the blowing channel from the bottom of the filter element and is finally discharged by the exhaust channel. In this scheme, exhaust passage, gas storage gasbag and be used for the gas circuit pipeline integration of blowback integrative, compact structure, the volume is littleer and more laborsaving, more saves space, effectively reduces manufacturing cost. Meanwhile, the relative position of the exhaust channel and the blowing pipeline can effectively clean dust attached to the surface of the filter element, and the service life of the filter element is prolonged.

In one possible embodiment, the air storage bladder is connected to an external air source through an air inlet hole formed in the upper portion of the housing, and the external air source charges the air storage bladder with compressed air.

In one possible embodiment, the upper and lower portions of the housing are securely sealed by a fastener, which may be a clamp.

In one possible embodiment, the exhaust channel protrudes from the upper part of the housing to form an air outlet, so that the residual air is exhausted from the interior of the housing to the exterior of the housing.

In a possible embodiment, in order to increase the volume of the air storage bag with a constant volume of the housing, the lower end surface of the sealing plate is located at the same level as the lower end surface of the exhaust passage.

In one possible embodiment, the filter element is any one of a polyester filter element, a paper filter element, a membrane-coated filter element, a metal filter element, a ceramic filter element, a sintered filter element, and a melt-blown filter element.

The utility model has the advantages that: in order to save the space that equipment occupy and improve the effect of blowback deashing, the utility model discloses divide the space on casing upper portion, through adopting exhaust passage, gas storage gasbag and being used for the gas circuit passageway of blowback to integrate, make the utility model discloses a compact structure, the volume is littleer and handy, more saves space, effective reduce cost. And the exhaust passage and the relative position of the blowing-up passage are arranged, so that dust attached to the surface of the filter element can be effectively cleaned, and the service life of the filter element is prolonged.

Drawings

FIG. 1 is a schematic longitudinal cross-section of a prior art;

FIG. 2 is a schematic longitudinal cross-sectional view of a prior art Chinese patent 201920804867.0;

FIG. 3 is a schematic longitudinal cross-section of a blowback respirator according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a back-blowing respirator according to an embodiment of the present invention.

Breathing apparatus	10
		Upper part of the shell	101
Exhaust passage	1011
		Sealing plate	1012
Gas storage air bag	1013
		Air outlet	1014
Lower part of the shell	102
		Filter element	1021
Air blowing channel	1022
		Fastening piece	103
Gas path pipeline	104
		Pulse electromagnetic valve	1041
Air intake	105

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

With the rise of new energy field, the processing demand of powder material is more frequent especially in battery field. In the process of conveying the powder material, for example, the powder is added into a feeding bin, the powder material is carried by the dust, and the dust overflows, so that the environment and the safety of operators are polluted. The utility model discloses generally settle in the top of feed bin for filter the powder material of raising, make the gas that discharges in the air not contain the powder material, and adopt the mode of blowback to dash to fall the powder material that adsorbs on the filter core.

Specifically, fig. 3 illustrates an embodiment of the present invention. As shown in the longitudinal section, an integrated filtered blowback respirator includes a housing and an air passage conduit 104. The shell consists of an upper part and a lower part, the lower part 102 of the shell is provided with a filter element 1021, and the upper part of the filter element 1021 is an air blowing channel 1022. The upper housing portion 101 and the lower housing portion 102 are fastened and sealed by a fastener 103, and the fastener 103 may be a clip, such as a quick-fit clip. In some embodiments, the filter element 1021 can be any of a polyester filter element, a paper filter element, a metal filter element, a ceramic filter element, a sintered filter element, a melt blown filter element, and a membrane covered filter element. It is understood that the cylindrical filter element in the embodiment is generally hollow and provided with a filter material circumferentially, and the air blowing passage 1022 refers to the hollow part of the filter element 1021, i.e. the upper part of the filter element 1021. Additionally, in some embodiments, within the housing lower portion 102, generally at the lower portion of the filter element 1021 is a silo. A portion of the air passage tube 104 is contained in the upper housing portion 101, and one end of the air passage tube 104 extends into the air blowing passage 1022 of the lower housing portion 102, i.e., the upper portion of the filter element 1021. An exhaust channel 1011 is vertically arranged coaxially with the air blowing channel 1022 and is disposed above the air path pipe 104, and it is understood that the air path pipe 104 is specifically a part located in the upper part 101 of the housing, as shown in fig. 3, and the exhaust channel 1011 is located in the upper part 102 of the housing. In this embodiment, the portion of the air path pipe 104 is horizontally disposed in the upper housing portion 101, and the space occupied by the portion of the air path pipe 104 in the upper housing portion 101 is reduced. A sealing plate 1012 is fixedly mounted coaxially on the exhaust passage 1011, so that the sealing plate 1012 is positioned above the air path pipe 104. Two static seals are formed between the outer edge of the sealing plate 1012, the outer edge of the exhaust channel 1011 and the inner wall of the upper part 101 of the housing, specifically, as shown in fig. 3, the outer edge of the sealing plate 1012 and the outer edge of the exhaust channel 1011, the outer edge of the sealing plate 1012 and the side wall of the upper part 101 of the housing, and the outer edge of the exhaust channel 1011 and the top wall of the upper part 101 of the housing respectively form the static seals. The sealed space defined by the upper side of the sealing plate 1012, the outside of the exhaust passage 1011, and the inside of the housing upper part 101 forms the air storage bag 1013. Optionally, in some embodiments, the portion of the exhaust channel 1011 protruding out of the upper portion 101 of the housing forms an exhaust port to allow the residual air to be exhausted from the interior of the housing to the exterior of the housing. It should be understood that the gas storage balloon 1013 and the exhaust passage 1011 are integrated in the housing upper part 102 in this embodiment. Specifically, the gas storage bag 1013 is annular in the height direction so as to surround the exhaust passage 1011; the height of the annular space is equal to the distance between the upper edge of the sealing plate 1012 and the top of the shell, and the width of the annular space is equal to the distance between the outer edge of the exhaust channel 1011 and the side wall of the shell. The gas storage air bag 1013 provides blowing power for blowing back and removing the powder adhered on the filter element 1021. Alternatively, in some embodiments, the lower end of the coaxial sealing plate 1012 is at the same level as the lower end of the exhaust channel 1011 under a constant volume of the upper housing 101, and the distance between the upper edge of the sealing plate 1012 and the top of the housing is increased, so as to increase the volume of the gas storage balloon 1013 for storing more gas. In some possible embodiments, all connections between the three components, the sealing plate 1012, the exhaust channel 1011 and the upper housing part 101, are sealed by welding, which makes the upper housing part 101 structurally stable.

It will be appreciated that in this embodiment, the gas storage bladder 1013 or external exhaust channel 1011 need not be provided outside the housing, but rather the gas path conduit 104 in the upper portion 101 of the housing may be positioned horizontally, for example, by reducing the space occupied by the gas path conduit. In addition, in particular, the space of the upper housing part 102 is divided in the integrated manner. With casing upper portion 101 in, the space that is located the upside of closing plate 1012 and the exhaust passage 1011 outside and injects is used as gas storage gasbag 1013, has saved the utility model discloses arrange required exterior space for the structure of blowback respirator in this embodiment is compacter, intensive, and arranging of whole blowback respirator is also comparatively convenient.

It should be understood that the present invention is adapted to integrate the gas storage balloon 1013 with the exhaust channel 1011 to form the upper portion 101 of the housing, and the corresponding gas path pipe 104 is designed according to the corresponding adjustment made by the back-blowing respirator in the integrated manner. Specifically, the following is a design of the housing external gas flow passage. In this embodiment, the other end of the air passage is located outside the housing and is connected to the air storage bag 1013, so as to communicate the air storage bag 1013 located at the upper portion 101 of the housing with the air blowing passage 1022 located at the lower portion 102 of the housing. By now it can be appreciated that the air passage conduit 104 extends from a position outside the air storage bladder 1013 and from outside the housing upper portion 102 to below the air storage bladder 1013 inside the housing upper portion 102 (as previously described, this section is generally horizontally disposed) and terminates in an air blowing passage 1022 located in the housing lower portion 102 and above the filter element 1021. The part of the air path pipe 104 outside the housing is provided with a pulse solenoid valve 1041 for controlling the on-off of the air path channel. When the pulse solenoid valve 1041 receives the opening signal, the pulse solenoid valve 1041 is opened, the gas path pipe 104 is opened at this time, and the gas in the gas storage airbag 1013 enters the blowing channel 1022 through the gas path pipe 104. Alternatively, in some embodiments, as shown in FIG. 4, when the gas in the gas storage balloon 1013 is insufficient to provide the blow-back blowing power, the gas storage balloon 1013 is connected to an external gas source through an air inlet 105 formed in the upper portion 101 of the housing, and the external gas source charges the gas storage balloon 1013 with compressed air.

The operation of the integrated filtering blowback respirator of the present application is illustrated by the embodiment of FIG. 3. When the feed bin that is located filter core 1021 lower part carries out the feeding or ejection of compact, the powder material is raised the dust, and the air that is carrying the dust on hand rises, and the dust is filtered by filter core 1021 above the feed bin, and the air after the filtration is outside through blowing channel, exhaust passage (casing lower part to casing upper portion). When the filter element is used for a large number of times, dust is gradually accumulated on the filter element 1021. When the back flushing ash removal operation needs to be carried out regularly, compressed gas is filled into the gas storage air bag 1013 by using an external gas source, when the pulse solenoid valve 1041 receives an opening signal, the gas pulse solenoid valve 1041 on the gas path pipeline 104 outside the shell is opened, the compressed gas passes through the external gas path pipeline 104, the gas storage air bag 1013 on the upper part 101 of the shell sequentially passes through the gas path pipeline 104 on the lower part of the sealing plate 1012 and the blowing channel 1022 on the upper part of the filter element 1021 along the gas path pipeline 104, the compressed gas is sprayed out from the gas outlet at the tail end of the gas path pipeline 104, the dust accumulated or adsorbed on the filter element 1021 is blown off by the instant expansion vibration, and the blown off powder material falls back to the bin at the bottom of the filter element 1021 from. After the blowing is finished, the residual air rises back, passes through the blowing channel 1022 from the bin at the bottom of the filter element 1021, and is finally discharged through the exhaust channel 1011. In the blowing process, the exhaust channel 1011 is positioned above the air outlet at the tail end of the air channel 104, so that the exhaust channel 1011 does not need to be manually closed, the external air pressure is always equal to the pressure of the air in the filter element 1021, and the blowing process is more sufficient; after the blowing is finished, the air exhaust channel does not need to be opened manually. The process of inflating and blowing is repeated, so that the filter element 1021 can be repeatedly blown, and dust adhered to the filter element 1021 can be washed off. Therefore, the utility model discloses an integrated structure when not needing too much exterior space, can realize filtering, gas storage, blowback well, respiratory function.

It should be noted that, in the premise of no conflict, the technical features of the embodiments and/or the embodiments described in the present invention may be arbitrarily combined with each other, and the technical solutions obtained after the combination should also fall into the protection scope of the present application.

It should be understood that the references to "inner wall", "outer wall" and "inner side" and "outer side" in the above embodiments are merely for convenience of description of the division of the inner space of the housing, and do not refer to specific differences. The specific examples in the embodiments of the present invention are only for helping those skilled in the art to understand the present invention better, and not for limiting the protection scope of the present invention, and those skilled in the art can make various modifications and variations on the above-mentioned embodiments, and these modifications and variations all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides a filterable blowback respirator of integrated form, includes casing, gas circuit pipeline, its characterized in that:

the shell consists of an upper part and a lower part, the lower part is provided with a filter element, and the upper part of the filter element is an air blowing channel;

the air channel pipeline part is positioned at the upper part of the shell, one end of the air channel pipeline part extends into the blowing channel at the upper part of the filter element, an exhaust channel which is coaxial with the blowing channel is arranged above the air channel pipeline in the upper part of the shell, a sealing plate is coaxially and fixedly arranged on the exhaust channel, the outer edge of the sealing plate, the outer edge of the exhaust channel and the inner wall of the upper part of the shell form static seal in pairs, and a sealed space defined by the upper side of the sealing plate, the outer side of the exhaust channel and;

the other end of the gas path pipeline is positioned outside the shell and is connected with the gas storage airbag, and the gas storage airbag positioned at the upper part of the shell is communicated with the blowing channel positioned at the lower part of the shell;

the part of the gas circuit pipeline positioned outside the shell is provided with a pulse solenoid valve.

2. The integrated filtered blowback respirator of claim 1, wherein the air storage bladder is connected to an external air supply via an air inlet opening in the upper portion of the housing.

3. An integrated filtered blowback respirator according to claim 2 wherein the exhaust passage projects above the upper portion of the housing to form the air outlet.

4. The integrated filtered blowback respirator of claim 3, wherein the electronic control system controls the pulsing solenoid valve to open during periodic blowback.

5. The integrated filtered blowback respirator of any one of claims 1 to 4, wherein the lower end face of the sealing plate is level with the lower end face of the exhaust passage.

6. The integrated filtered blowback respirator of claim 5, wherein the upper portion of the housing is securely sealed to the lower portion of the housing by fasteners.

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