Composite filter and gas detection equipment

Abstract

The utility model provides a compound filter and gas detection equipment, and relates to the technical field of filtering devices. The composite filter comprises a filter shell, the filtering shell is provided with a plurality of mutually independent filtering cavities, each filtering cavity is provided with an air inlet connector and an air outlet connector which are communicated with the filtering cavity, filtering cotton is installed at the communication position of the air inlet connector and the filtering cavity, and filtering cotton is installed at the communication position of the air outlet connector and the filtering cavity; at least one of the plurality of filter chambers is set as a first filter chamber for filtering carbon monoxide; at least one of the plurality of filter chambers is provided as a second filter chamber for filtering carbon dioxide. The composite filter provided by the utility model solves the technical problems that a gas detection system in the prior art is large in size, high in cost and poor in replaceability.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a composite filter and a gas detection device. Background Art

[0002] The existing gas detection system needs to filter gas, including multiple filters for filtering different impurities respectively; the multiple filters are all installed in the main body of the gas detection system and are all connected to other components through plug-in pipelines.

[0003] The multiple filters are scattered in the main body, and plug-in pipelines are required during assembly, resulting in the problems of large volume and cumbersome pipelines of the main body; the types of the multiple filters are different, and different molds need to be manufactured, resulting in high costs; moreover, when the filters need to be replaced, the main body needs to be disassembled, resulting in poor replaceability of the filters. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a composite filter and a gas detection device to alleviate the technical problems of large volume, high cost and poor replaceability of filters existing in the prior art.

[0005] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0006] In the first aspect, the composite filter provided by the utility model includes a filter housing;

[0007] The filter housing has a plurality of independent filter chambers, and each filter chamber is provided with an air inlet joint and an air outlet joint communicated therewith. A filter cotton is installed at the connection between the air inlet joint and the filter chamber, and a filter cotton is installed at the connection between the air outlet joint and the filter chamber;

[0008] At least one of the plurality of filter chambers is set as a first filter chamber for filtering carbon monoxide;

[0009] At least one of the plurality of filter chambers is set as a second filter chamber for filtering carbon dioxide.

[0010] Furthermore, the composite filter includes a plurality of filter elements, and the plurality of filter elements include a first filter element, a second filter element and a third filter element;

[0011] The first filter element and the second filter element are installed in the first filter chamber, and a filter cotton is installed between the first filter element and the second filter element. The first filter element is used for filtering carbon monoxide, and the second filter element is used for filtering water;

[0012] A third filter element is installed in the second filter chamber, and the third filter element is used to filter carbon dioxide.

[0013] Furthermore, the first filter chamber includes a first compartment and a second compartment that communicate with each other;

[0014] The intake joint is provided in the first compartment, the outlet joint is provided in the second compartment, and a filter cotton is installed at the connection between the first compartment and the second compartment;

[0015] The first filter element is installed in the first compartment, and the second filter element is installed in the second compartment.

[0016] Furthermore, the composite filter includes a plurality of filter elements;

[0017] Each filter chamber is provided with a flow channel, and both ends of the flow channel communicate with the intake joint and the outlet joint respectively;

[0018] The filter element is filled in the flow channel.

[0019] Furthermore, the flow channel is arranged in a bent shape.

[0020] Furthermore, the composite filter further includes a bracket, the bracket is connected to the filter housing, and is provided with a first quick plug that communicates with the intake joint and a second quick plug that communicates with the outlet joint.

[0021] Furthermore, a sealing ring is clamped between the intake joint and the first quick plug;

[0022] A sealing ring is clamped between the outlet joint and the second quick plug.

[0023] Furthermore, the filter housing includes a bottom shell and an upper shell, the upper shell covers the bottom shell to form a plurality of the filter chambers, and the two are bonded together.

[0024] Furthermore, the filter housing is provided with an information detection component, and the information detection component is used to detect the service life of the filter housing.

[0025] In a second aspect, the gas detection device provided by the present utility model includes a main body and the composite filter as described in any one of the above;

[0026] The composite filter is installed in the main body, and the main body is provided with a detachable door.

[0027] Based on the above technical solutions, the technical effects that the present utility model can achieve are analyzed as follows:

[0028] In a first aspect, the composite filter provided by the present utility model includes a filter housing; the filter housing has a plurality of mutually independent filter chambers, and each filter chamber is provided with an air inlet joint and an air outlet joint communicated therewith. A filter cotton is installed at the connection between the air inlet joint and the filter chamber, and a filter cotton is also installed at the connection between the air outlet joint and the filter chamber; at least one of the plurality of filter chambers is set as a first filter chamber for filtering carbon monoxide; at least one of the plurality of filter chambers is set as a second filter chamber for filtering carbon dioxide.

[0029] The air inlet joint is used to input gas into the filter chamber, the air outlet joint is used to discharge the gas in the filter chamber, and the filter chamber filters the gas flowing through it. Among them, the first filter chamber is used to filter carbon monoxide, and the second filter chamber is used to filter carbon dioxide.

[0030] The plurality of filter chambers are mutually independent, and can filter different impurities, realizing the integration of multiple filters, reducing the number of filters and the number of connecting pipes, and only need to replace the filter housing to realize the replacement of the filter chamber, thus avoiding the problems of large volume and poor replaceability of the gas detection system; the filter housing has a plurality of filter chambers, without the need to make many molds, avoiding the problem of high cost of the gas detection system.

[0031] In a second aspect, the gas detection device provided by the present utility model includes a main body and a composite filter; the composite filter is installed in the main body, and the main body is provided with a detachable door.

[0032] Because the door of the main body can be detached, when it is necessary to install, replace or disassemble the composite filter, the door can be detached first, then the composite filter can be installed into the main body, and finally the door can be installed; it is convenient to install, replace or disassemble the composite filter, and there is no need to disassemble the outer shell of the main body. Description of the Drawings

[0033] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of the filter housing in the composite filter provided by the embodiment of the present utility model;

[0035] Figure 2 It is a sectional view of the filter housing in the composite filter provided by the embodiment of the present utility model;

[0036] Figure 3Structural schematic diagram of the composite filter provided by the embodiment of the present utility model;

[0037] Figure 4 Cross-sectional view of the composite filter provided by the embodiment of the present utility model;

[0038] Figure 5 Exploded structural schematic diagram of the composite filter provided by the embodiment of the present utility model.

[0039] Icon:

[0040] 100 - Filter housing; 110 - Filter chamber; 111 - Air inlet connector; 112 - Air outlet connector; 114 - Branch; 120 - Filter cotton; 115 - First filter chamber; 116 - First compartment; 117 - Second compartment; 118 - Second filter chamber; 130 - Bottom case; 140 - Upper case;

[0041] 200 - Bracket; 210 - First quick plug; 220 - Second quick plug; 230 - Sealing ring;

[0042] 310 - Device chip; 320 - Information recognition PCB. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in 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. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0045] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0047] In addition, terms such as "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0048] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0050] Embodiment 1

[0051] In the existing gas detection system, the positions of multiple filters in the host are scattered, and when assembling, pipeline insertion is required, resulting in the problems of large volume of the host and cumbersome pipelines; the types of multiple filters are different, and different molds need to be manufactured, resulting in high costs; and when the filter needs to be replaced, the host needs to be disassembled, resulting in poor replaceability of the filter.

[0052] In view of this, the composite filter provided by the embodiment of the present utility model includes a filter housing 100; the filter housing 100 has a plurality of independent filter chambers 110, and each filter chamber 110 is provided with an air inlet joint 111 and an air outlet joint 112 communicated therewith. A filter cotton 120 is installed at the connection between the air inlet joint 111 and the filter chamber 110, and a filter cotton 120 is installed at the connection between the air outlet joint 112 and the filter chamber 110; at least one of the plurality of filter chambers 110 is set as a first filter chamber 115 for filtering carbon monoxide; at least one of the plurality of filter chambers 110 is set as a second filter chamber 118 for filtering carbon dioxide.

[0053] Specifically, the air inlet joint 111 and the air outlet joint 112 of each filter chamber 110 are both located on the same side wall of the filter housing 100, which is convenient for processing the air inlet joint 111 and the air outlet joint 112 and for other components to be connected thereto, avoiding the problem of cumbersome pipeline layout; preferably, the air inlet joint 111 and the air outlet joint 112 of each filter chamber 110 are respectively located at two opposite corners of the filter chamber 110, extending the flow path of the gas and enhancing the filtering effect. In this embodiment, the filter housing 100 has two filter chambers 110, one of which is the first filter chamber 115. The first filter chamber 115 removes carbon monoxide in the calibration gas to make it zero gas before the calibration detection unit (zero calibration); the other is the second filter chamber 118, and the second filter chamber 118 is used to remove carbon dioxide gas in the exhaled breath collected before it is introduced into the detection chamber, avoiding interfering with the detection result.

[0054] The air inlet joint 111 is used to input gas into the filter chamber 110, the air outlet joint 112 is used to discharge the gas in the filter chamber 110, and the filter chamber 110 filters the flowing gas. Among them, the first filter chamber 115 is used to filter carbon monoxide, and the second filter chamber 118 is used to filter carbon dioxide. The plurality of filter chambers 110 are independent of each other, and can filter different impurities, realizing the integration of multiple filters, reducing the number of filters and the number of plug-in pipelines, and only need to replace the filter housing 100 to realize the replacement of the filter chamber 110, thus avoiding the problems of large volume and poor replaceability of the gas detection system; the filter housing 100 has a plurality of filter chambers 110, and there is no need to make many molds, avoiding the problem of high cost of the gas detection system.

[0055] The direct advantage of this composite filter is that the positions of the filter chambers 110 are concentrated, quick plug replacement is convenient, and the usage duration of the composite filter can be checked in real time and a reminder for replacement can be given. The derivative effect is that it can be sold separately as a composite filter element, shared with other products, and has a wide application range and strong applicability; among them, when used in cooperation with an NDIR (non-dispersive infrared) gas chamber, it can calibrate the instrument and improve the measurement accuracy of the instrument.

[0056] The structure and shape of the composite filter will be described in detail below:

[0057] In an alternative solution of the embodiment of the present utility model, the composite filter includes a plurality of filter elements, and the plurality of filter elements include a first filter element, a second filter element, and a third filter element; the first filter chamber 115 is provided with the first filter element and the second filter element, and a filter cotton 120 is installed between the first filter element and the second filter element. The first filter element is used to filter carbon monoxide, and the second filter element is used to filter water; the third filter element is installed in the second filter chamber 118, and the third filter element is used to filter carbon dioxide.

[0058] Specifically, the first filter element is set as a carbon monoxide catalyst, so that the first filter element can filter carbon monoxide; the second filter element is set as a color-changing silica gel, so that the second filter element can filter water; the third filter element is set as calcium lime, so that the third filter element can filter carbon dioxide.

[0059] The first filter chamber 115 is provided with the first filter element and the second filter element, so that the first filter chamber 115 can filter carbon monoxide and water. The second filter chamber 118 is provided with the third filter element, so that the second filter chamber 118 can filter carbon dioxide.

[0060] In an alternative solution of the embodiment of the present utility model, the first filter chamber 115 includes a first compartment 116 and a second compartment 117 that are in communication with each other; the first compartment 116 is provided with an air inlet joint 111, the second compartment 117 is provided with an air outlet joint 112, and a filter cotton 120 is installed at the communication part between the first compartment 116 and the second compartment 117; the first filter element is installed in the first compartment 116, and the second filter element is installed in the second compartment 117.

[0061] Specifically, a partition board is provided in the first filter chamber 115, and the partition board divides the first filter chamber 115 into the first compartment 116 and the second compartment 117; the partition board is provided with a communication hole, and the communication hole realizes the communication between the first compartment 116 and the second compartment 117; the filter cotton 120 is installed at the communication hole. The gas enters from the air inlet joint 111, flows through the first compartment 116 and is filtered by the first filter element, then enters the second compartment 117 from the communication hole, flows through the second compartment 117 and is filtered by the second filter element, and then flows out from the air outlet joint 112.

[0062] The partition board divides the first filter chamber 115 into the first compartment 116 and the second compartment 117, avoiding the problem that the first filter element and the second filter element are mixed and cannot be separated by the filter cotton 120.

[0063] As another implementation manner, the second filter element is installed in the first compartment 116, and the first filter element is installed in the second compartment 117.

[0064] In an alternative embodiment of the present utility model, the composite filter includes a plurality of filter elements; a flow channel is provided in each filter chamber 110, and both ends of the flow channel are respectively communicated with an air inlet joint 111 and an air outlet joint 112; the filter elements are filled in the flow channel.

[0065] Specifically, taking Figure 2 as an example, a branch 114 is provided on the top wall of the filter chamber 110, and two branches 114 are provided on the bottom wall, and the two branches 114 on the bottom wall are respectively located on both sides of the branch 114 on the top wall, thus forming a flow channel.

[0066] The filter elements are filled in the flow channel to filter the gas, and the flow path of the gas in the filter chamber 110 is extended, the contact area with the filter elements is increased, and the filtering effect is enhanced.

[0067] In an alternative embodiment of the present utility model, the flow channel is arranged in a bent shape.

[0068] Specifically, referring to Figure 2 , Figure 2 where the arrow indicates the gas flow direction, and the flow channel is bent under the action of multiple branches 114; of course, the flow channel arranged in an S shape, etc. should also be within the protection scope of the embodiments of the present utility model.

[0069] The flow channel is in a bent shape, which extends the flow path of the gas in the filter chamber 110, increases the contact area with the filter elements, and enhances the filtering effect.

[0070] In an alternative embodiment of the present utility model, the composite filter further includes a bracket 200, the bracket 200 is connected to the filter housing 100, and is provided with a first quick plug 210 communicated with the air inlet joint 111 and a second quick plug 220 communicated with the air outlet joint 112.

[0071] Specifically, referring to Figures 3 to 5 , the bracket 200 sleeves the filter housing 100, and the air inlet joint 111 of the filter housing 100 extends into the first quick plug 210, and the air outlet joint 112 extends into the second quick plug 220.

[0072] The bracket 200 realizes the supporting and fixing function for the filter housing 100; the first quick plug 210 and the second quick plug 220 enable the composite filter to be quickly plugged and matched with other mechanisms.

[0073] In an alternative embodiment of the present utility model, a sealing ring 230 is clamped between the air inlet joint 111 and the first quick plug 210; a sealing ring 230 is clamped between the air outlet joint 112 and the second quick plug 220.

[0074] Specifically, grooves are provided on the outer walls of the air inlet joint 111 and the air outlet joint 112, and the sealing ring 230 is installed in the grooves to improve the installation stability of the sealing ring 230.

[0075] The sealing ring 230 seals between the air inlet joint 111 and the first quick plug 210 to prevent gas leakage; the sealing ring 230 seals between the air outlet joint 112 and the second quick plug 220 to prevent gas leakage.

[0076] In an alternative embodiment of the present utility model, referring to Figure 1 and Figure 5 , the filter housing 100 includes a bottom shell 130 and an upper shell 140. The upper shell 140 covers the bottom shell 130 to form a plurality of filter chambers 110, and the two are bonded to each other.

[0077] Specifically, the upper shell 140 and the bottom shell 130 are hermetically connected by glue.

[0078] The bonding between the upper shell 140 and the bottom shell 130 seals the filter chamber 110.

[0079] In an alternative embodiment of the present utility model, the filter housing 100 is equipped with an information detection component for detecting the usage duration of the filter housing 100.

[0080] Specifically, referring to Figure 1 and Figure 5 , the information detection component includes an identification chip 310 and an information identification PCB 320. The identification chip is installed on the side wall of the filter housing 100 with an air inlet and an air outlet. The information identification PCB 320 is installed on the bracket 200, and the probe of the information identification PCB 320 passes through the bracket 200 and is connected to the identification chip. The identification chip is used to identify the usage duration of the filter housing 100, and the information identification PCB 320 is used to read the information of the identification chip.

[0081] The information detection component is used to detect the usage duration of the filter housing 100, and the operator can view the usage duration in real time to replace the filter housing 100 in a timely manner.

[0082] Embodiment Two

[0083] The gas detection device provided by the embodiment of the present utility model includes the composite filter in Embodiment One. Therefore, it also has all the beneficial effects in Embodiment One, which will not be elaborated here.

[0084] In an alternative embodiment of the present utility model, the gas detection device further includes a main body. The composite filter is installed in the main body, and the main body is provided with a detachable door.

[0085] Specifically, the bin door can be detachably mounted on the main machine by using a rabbet and screws; of course, if the bin door is connected to the main machine by other detachable means, it should also be within the protection scope of the embodiments of the present invention. Preferably, the composite filter is assembled with the main machine in a quick-insert form.

[0086] Since the bin door of the main machine can be detached, when it is necessary to install, replace or disassemble the composite filter, the bin door can be detached first, then the composite filter can be installed into the main machine, and finally the bin door can be installed; it is convenient to install, replace or disassemble the composite filter, and there is no need to disassemble the outer shell of the main machine.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite filter, characterized in that, Comprising: A filter housing (100); The filter housing (100) has a plurality of independent filter chambers (110), and each of the filter chambers (110) is provided with an air inlet joint (111) and an air outlet joint (112) communicated therewith. A filter cotton (120) is installed at the connection between the air inlet joint (111) and the filter chamber (110), and a filter cotton (120) is installed at the connection between the air outlet joint (112) and the filter chamber (110); At least one of the plurality of filter chambers (110) is set as a first filter chamber (115) for filtering carbon monoxide; At least one of the plurality of filter chambers (110) is set as a second filter chamber (118) for filtering carbon dioxide.

2. The composite filter according to claim 1, wherein The composite filter includes a plurality of filter elements, and the plurality of filter elements include a first filter element, a second filter element and a third filter element; A first filter element and a second filter element are installed in the first filter chamber (115), a filter cotton (120) is installed between the first filter element and the second filter element, the first filter element is used for filtering carbon monoxide, and the second filter element is used for filtering water; A third filter element is installed in the second filter chamber (118), and the third filter element is used for filtering carbon dioxide.

3. The composite filter according to claim 2, characterized in that, The first filter chamber (115) includes a first compartment (116) and a second compartment (117) communicated with each other; The first compartment (116) is provided with the air inlet joint (111), the second compartment (117) is provided with the air outlet joint (112), and a filter cotton (120) is installed at the connection between the first compartment (116) and the second compartment (117); The first filter element is installed in the first compartment (116), and the second filter element is installed in the second compartment (117).

4. The composite filter according to claim 1, characterized in that, The composite filter includes a plurality of filter elements; A flow channel is provided in each of the filter chambers (110), and both ends of the flow channel are respectively communicated with the air inlet joint (111) and the air outlet joint (112); The filter element is filled in the flow channel.

5. The composite filter according to claim 4, wherein, The flow channel is arranged in a bent shape.

6. The composite filter according to claim 1, characterized in that, The composite filter further includes a bracket (200), the bracket (200) is connected to the filter housing (100), and is provided with a first quick plug (210) communicated with the air inlet joint (111) and a second quick plug (220) communicated with the air outlet joint (112).

7. The composite filter according to claim 6, wherein A sealing ring (230) is clamped between the air inlet joint (111) and the first quick plug (210); A sealing ring (230) is clamped between the air outlet joint (112) and the second quick plug (220).

8. The composite filter according to claim 1, wherein The filter housing (100) includes a bottom shell (130) and an upper shell (140), the upper shell (140) covers the bottom shell (130) to form a plurality of the filter chambers (110), and they are bonded to each other.

9. The composite filter according to claim 1, wherein, An information detection component is installed on the filter housing (100), and the information detection component is used for detecting the usage duration of the filter housing (100).

10. A gas detection device, characterized in that, Comprising a host and a composite filter according to any one of claims 1-9; The composite filter is installed inside the host, and the host is provided with a detachable door.

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