CN221513867U - Filter screen subassembly and gaseous preparation facilities - Google Patents

Abstract

The utility model provides a filter screen assembly and a gas preparation device, wherein the filter screen assembly comprises a filter screen unit, a control unit and a plurality of detection units, the filter screen unit comprises a bracket and a filter screen body, and the filter screen body is detachably arranged on the bracket; the detection units are arranged on the filter screen body at intervals and detachably connected with the filter screen body, and are used for detecting at least one of the weight of attachments on the filter screen body and the flow rate of gas passing through the filter screen body; the control unit comprises a controller, and the controller is electrically connected with the detection unit and is used for determining the state of the filter screen body to be replaced according to at least one of the weight of the attachment and the information of the gas flow rate detected by the detection unit. The utility model improves the filtering effect, and the detection unit can be reused, thereby reducing the cost.

Description

Filter screen subassembly and gaseous preparation facilities

Technical Field

The utility model relates to the technical field of gas preparation, in particular to a filter screen assembly and a gas preparation device.

Background

Gas production facilities are a generic term in industrial gas systems; including gas production, purification, compression, transportation, etc.; in China, the development of industrial gas equipment is rapid, and the method is widely applied to industries such as metallurgy, petrochemical industry, chemical fertilizers, urban coal gasification, machinery, electronics, glass, chemical fibers and the like.

At present, when preparing gas through the gas preparation device, air is required to be used, and impurities such as dust possibly contain in the air, therefore, in the process of preparing gas, the absorbed air needs to be filtered through a filter screen to remove the impurities, and in the long-time working operation of the filter screen, in order to avoid the filter screen blockage, the filter screen is generally judged and replaced through human experience.

However, whether the filter screen needs to be replaced or not is judged according to experience by people, accuracy of a replacement conclusion is reduced, and therefore impurities cannot be well filtered by the filter screen, and efficiency of preparing gas is affected.

Disclosure of utility model

In view of the above problems, the present utility model provides a filter screen assembly and a gas preparation device, which can improve the filtering effect, and the detection unit can be reused, so as to reduce the cost.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:

In a first aspect, an embodiment of the present utility model provides a filter screen assembly, including a filter screen unit, a control unit, and a plurality of detection units, where the filter screen unit includes a support and a filter screen body, and the filter screen body is detachably disposed on the support;

the detection units are arranged on the filter screen body at intervals and detachably connected with the filter screen body, and are used for detecting at least one of the weight of attachments on the filter screen body and the flow rate of gas passing through the filter screen body;

The control unit comprises a controller, and the controller is electrically connected with the detection unit and is used for determining the state of the filter screen body to be replaced according to at least one of the weight of the attachment and the information of the gas flow rate detected by the detection unit.

The beneficial effects of the utility model are as follows: through the setting of control unit and a plurality of detecting element for detecting element can detect the attachment weight on the filter screen unit constantly and the gas flow rate through the filter screen body, the controller can make the next step judgement according to its detection information and whether need change the filter screen body on the filter screen unit, and wherein, the filter screen body is detachable with the support design, is convenient for change the filter screen body, is favorable to the impurity in the better filtered air, improves the filter effect.

On the basis of the technical scheme, the utility model can be improved as follows.

In some alternative embodiments, the detection unit includes a pressure sensor having a sensing end disposed on the filter body and carrying the filter body to capture the weight of the attachment in the filter body.

In some embodiments, the pressure sensor and the filter screen body can be connected in a detachable connection mode.

In some alternative embodiments, the detection unit includes a first airflow sensor and a second airflow sensor, the first airflow sensor being disposed on an air intake side of the filter screen body and configured to detect a first wind speed value of the air intake side of the filter screen body;

the second airflow sensor is arranged on the air outlet side of the filter screen body and is used for detecting a second air speed value of the air outlet side of the filter screen body, and the controller determines the state of the filter screen body to be replaced according to the first air speed value and the second air speed value.

In some alternative embodiments, the support includes a frame member that encloses an opening through which the filter screen body is disposed on the frame member.

The skilled person will appreciate that the external shape and size of the filter screen body and the shape and size of the opening are mutually matched so as to ensure that the filter screen body is arranged on the frame member through the opening.

In some alternative embodiments, the device further comprises a connecting unit, wherein the connecting unit comprises a plurality of connecting pieces, and the connecting pieces and the detecting unit are correspondingly arranged, so that the detecting unit and the connecting pieces can be detachably connected.

It should be noted that, the setting of connecting element, with detecting element and connecting piece detachable connection, be convenient for follow-up dismantles filter screen body and detecting element, further, can reuse to detecting element, reduce cost.

In some alternative embodiments, the connecting member comprises a bolt connecting member, the detecting unit is provided with a first connecting hole, the filter screen body is provided with a second connecting hole, and the connecting member sequentially passes through the first connecting hole and the second connecting hole so that the detecting unit is connected with the filter screen body.

In some embodiments, the connector may be a bolt connector or other connector, so long as the detection unit is secured to the filter screen body.

In some alternative embodiments, the connecting piece is arranged on the filter screen body, the connecting piece is provided with a clamping part, the detection unit is provided with a clamping groove, and the clamping part and the clamping groove are mutually spliced.

It should be noted that, the connecting piece can be fixed on the filter screen body, wherein, through the bayonet catch portion on the connecting piece and the draw-in groove on the detecting element peg graft each other to satisfy the demountable installation between filter screen body and the detecting element, the detecting element used repeatedly of being convenient for.

In some optional embodiments, the fastening portion includes a protrusion extending toward the fastening portion and a latch connected to a side of the protrusion, a notch of the latch faces the protrusion, a clamping notch is disposed on a wall of the latch, the protrusion extends into the latch, and the latch is clamped with the clamping notch, so that the detection unit and the filter body are clamped.

It should be noted that, the latch matches each other with the joint breach, and in the lug stretched into the draw-in groove, latch and joint breach joint to make detecting element and filter screen body phase connection.

In some alternative embodiments, the connector is an integral structure with the filter screen body.

In a second aspect, an embodiment of the present utility model further provides a gas preparation apparatus, including a housing, where the housing has a gas inlet, and the filter screen assembly is disposed outside the gas inlet.

The filter screen assembly and the gas preparation device provided by the embodiment of the utility model comprise a shell, wherein the shell is provided with a gas inlet, and the filter screen assembly is arranged outside the gas inlet. The filter screen assembly comprises a filter screen unit, a control unit and a plurality of detection units, wherein the filter screen unit comprises a bracket and a filter screen body, and the filter screen body is detachably arranged on the bracket; the detection units are arranged on the filter screen body at intervals and detachably connected with the filter screen body, and are used for detecting at least one of the weight of attachments on the filter screen body and the flow rate of gas passing through the filter screen body; the control unit comprises a controller, and the controller is electrically connected with the detection unit and is used for determining the state of the filter screen body to be replaced according to at least one of the weight of the attachment and the information of the gas flow rate detected by the detection unit.

Through the setting of control unit and a plurality of detecting element for detecting element can detect the attachment weight on the filter screen unit constantly and the gas flow rate through the filter screen body, the controller can make the next step judgement according to its detection information and whether need change the filter screen body on the filter screen unit, and wherein, the filter screen body is detachable with the support design, is convenient for change the filter screen body, is favorable to the impurity in the better filtered air, improves the filter effect.

In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above, other technical problems that can be solved by the filter screen assembly and the gas preparation device provided by the embodiments of the present utility model, other technical features included in the technical solutions, and beneficial effects caused by the technical features are described in detail in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic structural view of a filter screen assembly according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram of a detection unit in a filter screen assembly according to an embodiment of the present application;

Fig. 3 is an assembly schematic diagram of a detection unit and a connection unit in a filter screen assembly according to an embodiment of the present application.

Reference numerals illustrate:

100-a filter screen assembly;

110-a filter screen unit;

111-a scaffold;

112-a filter screen body;

120-a control unit;

130-a detection unit;

131-a base;

1311-a card slot;

132-a pressure sensor;

1321—sense terminal;

140-a connection unit;

141-a connector;

1411-a catch;

14111-bumps;

14112-latch.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. All other embodiments obtained fall within the scope of protection of the present utility model. The following embodiments and features of the embodiments may be combined with each other without conflict.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

At present, when preparing gas through the gas preparation device, air is required to be used, and impurities such as dust possibly contain in the air, therefore, in the process of preparing gas, the absorbed air needs to be filtered through a filter screen to remove the impurities, and in the long-time working operation of the filter screen, in order to avoid the filter screen blockage, the filter screen is generally judged and replaced through human experience. However, whether the filter screen needs to be replaced or not is judged according to experience by people, accuracy of a replacement conclusion is reduced, and therefore impurities cannot be well filtered by the filter screen, and efficiency of preparing gas is affected.

In order to overcome the defects in the prior art, the filter screen assembly and the gas preparation device provided by the utility model have the advantages that the control unit and the plurality of detection units are arranged, so that the detection units can detect the weight of attachments on the filter screen units and the gas flow rate passing through the filter screen bodies at any time, and the controller can make the next step of judgment according to the detection information of the attachment weights and the gas flow rate, so that the filter screen bodies and the support are detachably designed, the filter screen bodies are convenient to replace, the impurities in the air can be filtered better, and the filtering effect is improved.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be described in detail with reference to the accompanying drawings so that those skilled in the art can more clearly understand the present utility model.

Fig. 1 is a schematic structural diagram of a filter screen assembly according to an embodiment of the present application, and fig. 2 is a schematic structural diagram of a detection unit in the filter screen assembly according to an embodiment of the present application.

As shown in fig. 1 and 2, an embodiment of the present application provides a filter screen assembly 100, including a filter screen unit 110, a control unit 120, and a plurality of detection units 130, the filter screen unit 110 including a bracket 111 and a filter screen body 112, the filter screen body 112 being detachably disposed on the bracket 111;

It should be noted that, the filter screen assembly 100 provided in the embodiment of the present application needs to filter impurities in air, so that when the gas preparation device prepares the gas, the inhalation of impurities can be avoided, and the purity of the gas preparation is ensured.

In addition, it should be noted that, the filter screen assembly 100 provided in the embodiment of the present application is used for filtering air by the filter screen assembly 100 before the air preparation device prepares air.

Of course, the filter screen assembly 100 provided in the embodiment of the present application may be used for filtering other materials, and may be disposed in other devices, which is not limited herein.

In some examples, the support 111 may be a metal piece, the material of which may include one or more of copper, iron, aluminum, tin, lead. The material of the casting mold may be one of sand, metal or ceramic.

In other examples, the support 111 may be a plastic material.

It should be noted that, regarding the material of the bracket 111, embodiments of the present application are not limited in this regard.

Of course, the bracket 111 may be made of steel plate, plastic or synthetic material under the premise of ensuring the strength during the production and manufacture.

In some examples, filter screen body 112 may be adapted to remove any one or more of dust, fine particulate matter, microorganisms, organic volatile gases (e.g., formaldehyde, etc.) and other air contaminants from the air.

The filter body 112 may be, but not limited to, a common filter, and may be any one or more of a primary filter, a medium-efficiency filter, and a high-efficiency filter.

Illustratively, the ultra-fine nano-fiber is used as the material of the filter screen body 112, so that the filter screen has higher filtering precision and lower filtering resistance, can easily achieve the interception precision of 99.99% for 0.33um ultra-fine particles, has low economic cost, and has the advantages of light weight, strong processability, large dust holding capacity, long service life and strong antibacterial property.

In various embodiments, the filter screen body 112 may have a pore size between 100 and 200 microns or between 200 and 300 microns, and in particular, embodiments of the present application are not so limited.

In some examples, the filter screen body 112 and the bracket 111 are detachably connected, such as a clamping structure or a screw structure, so that the filter screen body 112 can be conveniently detached and replaced later, and the installation mode of the filter screen body 112 is not limited.

The plurality of detection units 130 are arranged on the filter screen body 112 at intervals and detachably connected with the filter screen body 112, and the detection units 130 are used for detecting at least one of the weight of the attachments on the filter screen body 112 and the flow rate of the gas passing through the filter screen body 112;

It is understood that the plurality of detecting units 130 may be disposed on the filter screen body 112 at intervals according to the size of the filter screen body 112, and the embodiment of the present application is not limited herein too with respect to the size of each other.

It should be noted that, the detecting unit 130 is used for detecting the weight of the attached matter on the filter screen body 112, or the detecting unit 130 is used for detecting the flow rate of the gas passing through the filter screen body 112, or the detecting unit 130 is used for detecting the weight of the attached matter on the filter screen body 112 and the flow rate of the gas passing through the filter screen body 112.

The control unit 120 includes a controller electrically connected to the detection unit 130 for determining a state of the filter screen body 112 to be replaced according to at least one of the information of the weight of the attached matter and the flow rate of the gas detected by the detection unit 130.

The controller determines whether or not the filter screen body 112 needs to be replaced based on at least one of the received information of the weight of the attached matter and the flow rate of the gas.

Illustratively, when at least one of the attached matter weight information and the gas flow rate information reaches a preset value, the controller may issue an alarm or make an instruction for the next step, prompting the user to make a replacement or controlling the next operation to make an automatic replacement, without being limited thereto.

Through the above-mentioned setting, namely, through the setting of control unit 120 and a plurality of detecting element 130 for detecting element 130 can detect the attachment weight on the filter screen unit 110 constantly and the gas flow rate through filter screen body 112, the controller can make the next step judgement according to its detection information whether need change filter screen body 112 on the filter screen unit 110, wherein, filter screen body 112 is detachable with support 111 design, be convenient for change filter screen body 112, be favorable to better impurity in the filtered air, improve the filter effect.

In some alternative embodiments, detection unit 130 includes a pressure sensor 132, pressure sensor 132 having a sensing end 1321, sensing end 1321 being disposed on filter body 112 and carrying filter body 112 to capture the weight of the attachment in filter body 112.

In some embodiments, pressure sensor 132 and filter body 112 may be connected using a removable connection. Such as by bolts, snaps, or hanging connections. In particular, embodiments of the present application are not limited in this regard.

In some alternative embodiments, detection unit 130 includes a first airflow sensor disposed on the air intake side of filter screen body 112 and configured to detect a first wind speed value of the air intake side of filter screen body 112;

The second airflow sensor is disposed on the air outlet side of the filter screen body 112, and is configured to detect a second wind speed value of the air outlet side of the filter screen body 112, and the controller determines a to-be-replaced state of the filter screen body 112 according to the first wind speed value and the second wind speed value.

It should be noted that, the controller determines the to-be-replaced state of the filter screen body according to the difference between the first wind speed value and the second wind speed value.

When the difference between the first wind speed value and the second wind speed value reaches the preset value, it represents that the impurities on the filter screen body 112 are more, the flow rate of the gas is affected, and it can be determined that the filter screen body 112 needs to be replaced.

In addition, it should be noted that, the preset value may be pre-stored in the controller in advance, and the specific numerical range is not limited in this embodiment of the present application.

In some alternative embodiments, the support 111 includes a frame member that encloses an opening through which the filter screen body 112 is disposed.

It will be appreciated by those skilled in the art that the exterior shape and size of the filter screen body 112 and the shape and size of the opening are matched to each other to ensure that the filter screen body 112 is disposed on the frame member through the opening.

In some alternative embodiments, the connection unit 140 is further included, and the connection unit 140 includes a plurality of connection members 141, and the connection members 141 and the detection unit 130 are correspondingly disposed so that the detection unit 130 and the connection members 141 are detachably connected.

It should be noted that, the connection unit 140 is configured to detachably connect the detection unit 130 and the connection member 141, so that the filter screen body 112 and the detection unit 130 can be detached later, and further, the detection unit 130 can be reused, so that the cost is reduced.

In some alternative embodiments, the connecting member 141 includes a bolt connecting member 141, a first connecting hole is formed on the detecting unit 130, a second connecting hole is formed on the filter screen body 112, and the connecting member 141 sequentially passes through the first connecting hole and the second connecting hole, so that the detecting unit 130 and the filter screen body 112 are connected.

In some embodiments, the connection member 141 may be a bolt connection member 141 or other connection member 141, as long as the installation of the detection unit 130 to the filter screen body 112 can be ensured, and in particular, not limited thereto.

Of course, it should be noted that, in the embodiment of the present application, considering the cost of the connecting member 141, the connecting member 141 may be a bolt connecting member 141, and the corresponding detecting unit 130 is provided with a first connecting hole, the first connecting hole may be a threaded hole, and the connecting member 141 may pass through the first connecting hole and may be screwed or unscrewed to adjust the fixing and dismounting states.

In addition, the filter screen body 112 is correspondingly provided with a second connecting hole, the second connecting hole can also be a threaded hole, and the connecting piece 141 can pass through the first connecting hole and can be screwed or unscrewed to adjust the fixed and detached states.

Specifically, the connecting piece 141 sequentially passes through the first connecting hole and the second connecting hole, and is screwed, so that the detecting unit 130 can be fixed on the filter screen body 112, and of course, when the detecting unit 130 needs to be disassembled, the connecting piece 141 is only required to be unscrewed, and then the connecting piece 141 is sequentially taken out from the second connecting hole and the first connecting hole.

Fig. 3 is an assembly schematic diagram of a detection unit and a connection unit in a filter assembly according to an embodiment of the present application, as shown in fig. 1 to 3, in some alternative embodiments, a connection member 141 is disposed on a filter body 112, the connection member 141 has a fastening portion 1411, a fastening slot 1311 is disposed on the detection unit 130, and the fastening portion 1411 and the fastening slot 1311 are mutually inserted.

It should be noted that the connecting piece 141 may be fixed on the filter screen body 112, where the fastening portion 1411 on the connecting piece 141 and the fastening slot 1311 on the detecting unit 130 are inserted with each other, so as to satisfy the detachable installation between the filter screen body 112 and the detecting unit 130, so as to facilitate the repeated use of the detecting unit 130.

Specifically, when the controller determines that the filter body 112 needs to be replaced through the information detected by the detecting unit 130, firstly, the filter body 112 is detached from the bracket 111, and secondly, the detecting units 130 on the filter body 112 are detached from the filter body 112, and then, the filter body 112 is mounted on a new filter body 112, and the whole filter body is mounted on the bracket 111.

In some alternative embodiments, the fastening portion 1411 includes a protrusion 14111 extending toward the slot 1311 and a latch 14112 connected to a side of the protrusion 14111, the notch of the slot 1311 faces the protrusion 14111, and a slot wall of the slot 1311 is provided with a fastening notch, the protrusion 14111 extends into the slot 1311, and the latch 14112 is fastened to the fastening notch, so that the detecting unit 130 is fastened to the filter body 112.

It should be noted that the number of latches 14112 may be plural, and are located at sides of the protrusions 14111, and specifically, the number of latches 14112 is not limited herein.

The latch 14112 is matched with the clamping notch, and when the protruding block 14111 extends into the clamping groove 1311, the latch 14112 is clamped with the clamping notch, so that the detection unit 130 is connected with the filter screen body 112.

It should be noted that, by providing the protrusion 14111 and the latch 14112 as an integral molding, not only the connection strength between the protrusion 14111 and the latch 14112 can be improved, but also the seamless connection between the protrusion 14111 and the latch 14112 can be realized, so as to reduce the risk of cracking at the connection position of the protrusion 14111 and the latch 14112.

It should be noted that, in some embodiments, the bump 14111 and the latch 14112 are connected by an integrally connected connection manner, and in other embodiments, the bump 14111 and the latch 14112 may be connected by other connection manners, so long as the connection manner capable of fixedly connecting the bump 14111 and the latch 14112 can achieve the purpose of this embodiment, and the connection manner of the bump 14111 and the latch 14112 is not limited herein.

In some embodiments, at least one of the tab 14111 and the latch 14112 is constructed of an elastomeric material.

It will be appreciated that such a design facilitates disassembly of the filter screen body 112, thereby improving assembly.

That is, at least one of the lugs 14111 and the latches 14112 may be pressed using elastic deformation of the elastic material, such that the filter body 112 is easily disassembled.

In some examples, at least one of the tab 14111 and the latch 14112 may be a soft gel, for example, may be made of a material having elastic deformation capability such as silicone, polypropylene (PP), ethylene-vinyl acetate Copolymer (ETHYLENE VINYL ACETATE Copolymer, EVA), or the like.

In some alternative embodiments, detection unit 130 further includes a base 131, and pressure sensor 132 is disposed on base 131, base 131 being removably coupled to filter screen body 112.

It will be appreciated that the provision of the base 131 may enhance the stability of the mounting of the pressure sensor 132.

In some alternative embodiments, connector 141 is an integral structure with filter body 112.

It should be noted that, in some embodiments, the connection member 141 and the filter screen body 112 are connected by integrally connecting, in other embodiments, the connection member 141 and the filter screen body 112 may be connected by other connection methods, so long as the connection method capable of fixedly connecting the connection member 141 and the filter screen body 112 can achieve the purpose of this embodiment, and the connection method of the connection member 141 and the filter screen body 112 is not limited.

The filter screen assembly provided by the embodiment of the application comprises a filter screen unit, a control unit and a plurality of detection units, wherein the filter screen unit comprises a bracket and a filter screen body, and the filter screen body is detachably arranged on the bracket; the detection units are arranged on the filter screen body at intervals and detachably connected with the filter screen body, and are used for detecting at least one of the weight of attachments on the filter screen body and the flow rate of gas passing through the filter screen body; the control unit comprises a controller, and the controller is electrically connected with the detection unit and is used for determining the state of the filter screen body to be replaced according to at least one of the weight of the attachment and the information of the gas flow rate detected by the detection unit.

Through the setting of control unit and a plurality of detecting element for detecting element can detect the attachment weight on the filter screen unit constantly and the gas flow rate through the filter screen body, the controller can make the next step judgement according to its detection information and whether need change the filter screen body on the filter screen unit, and wherein, the filter screen body is detachable with the support design, is convenient for change the filter screen body, is favorable to the impurity in the better filtered air, improves the filter effect.

Example two

The embodiment of the application also provides a gas preparation device, which comprises a shell, wherein the shell is provided with a gas inlet, and the outside of the gas inlet is provided with the filter screen assembly 100.

Specifically, all the technical solutions of the filter screen assembly 100 in the foregoing embodiments are adopted in the gas preparation apparatus in this embodiment, so at least all the beneficial effects brought by the technical solutions in the foregoing embodiments are not described in detail herein.

The gas preparation device provided by the embodiment of the application comprises a shell, wherein the shell is provided with a gas inlet, and the filter screen assembly is arranged outside the gas inlet. Through the setting of control unit and a plurality of detecting element for detecting element can detect the attachment weight on the filter screen unit constantly and the gas flow rate through the filter screen body, the controller can make the next step judgement according to its detection information and whether need change the filter screen body on the filter screen unit, and wherein, the filter screen body is detachable with the support design, is convenient for change the filter screen body, is favorable to the impurity in the better filtered air, improves the filter effect.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The filter screen assembly is characterized by comprising a filter screen unit, a control unit and a plurality of detection units, wherein the filter screen unit comprises a bracket and a filter screen body, and the filter screen body is detachably arranged on the bracket;

The detection units are arranged on the filter screen body at intervals and detachably connected with the filter screen body, and are used for detecting at least one of the weight of attachments on the filter screen body and the flow rate of gas passing through the filter screen body;

The control unit comprises a controller, and the controller is electrically connected with the detection unit and is used for determining the state to be replaced of the filter screen body according to at least one of the weight of the attachment and the information of the gas flow rate detected by the detection unit.

2. The filter screen assembly of claim 1, wherein the detection unit includes a pressure sensor having a sensing end disposed on the filter screen body and carrying the filter screen body to capture the weight of the attachment in the filter screen body.

3. The filter screen assembly of claim 1, wherein the detection unit includes a first air flow sensor and a second air flow sensor, the first air flow sensor being disposed on an air intake side of the filter screen body and configured to detect a first air speed value of the air intake side of the filter screen body;

The second airflow sensor is arranged on the air outlet side of the filter screen body and is used for detecting a second air speed value of the air outlet side of the filter screen body, and the controller determines the state to be replaced of the filter screen body according to the first air speed value and the second air speed value.

4. A filter screen assembly according to any one of claims 1 to 3, wherein the support comprises a frame member which encloses an opening through which the filter screen body is disposed on the frame member.

5. A filter screen assembly according to any one of claims 1 to 3, further comprising a connection unit comprising a plurality of connectors through which the detection unit and the connector are arranged in correspondence such that the detection unit and the connector are detachably connected.

6. The filter screen assembly of claim 5, wherein the connector comprises a bolt connector, the detection unit has a first connection hole, the filter screen body has a second connection hole, and the connector sequentially passes through the first connection hole and the second connection hole to connect the detection unit and the filter screen body.

7. The filter screen assembly according to claim 5, wherein the connecting piece is arranged on the filter screen body, the connecting piece is provided with a clamping part, the detection unit is provided with a clamping groove, and the clamping part and the clamping groove are mutually spliced.

8. The filter screen assembly according to claim 7, wherein the fastening portion includes a protrusion extending toward the fastening groove and a latch connected to a side of the protrusion, a notch of the fastening groove faces the protrusion, a fastening notch is formed on a groove wall of the fastening groove, the protrusion extends into the fastening groove, and the latch and the fastening notch are fastened, so that the detection unit and the filter screen body are fastened.

9. The filter screen assembly of claim 5, wherein the connector is of unitary construction with the filter screen body.

10. A gas preparation device comprising a housing having a gas inlet, the outside of the gas inlet being provided with a filter screen assembly according to any one of claims 1 to 9.