Device for detecting gaseous medium in air

Abstract

The invention relates to a device for detecting a gaseous medium in air. An air inlet and an air outlet are formed in the side wall of the shell. A cleaning mechanism, a negative pressure collection mechanism and a detection assembly are sequentially arranged in the shell in the airflow direction, the input end of the cleaning mechanism communicates with the air inlet, and the output end of the detection assembly communicates with the air outlet; the negative pressure collecting mechanism can form airflow flowing to the air outlet. The cleaning mechanism is used for removing solid impurities in gas flowing through the cleaning mechanism, and when airflow generated by the negative pressure collecting mechanism flows through the cleaning mechanism, the cleaning mechanism can be driven by the airflow to move for self-cleaning. The detection assembly is used for detecting flowing gas. According to the device, solid impurities in air can be removed, so that the negative pressure collecting mechanism and the detection assembly can operate stably, and the failure rate is reduced; the cleaning mechanism is driven by airflow, driving assemblies such as a motor do not need to be additionally arranged, the size and weight of the device can be effectively reduced, portability is improved, and operation and maintenance are easy.

Description

Technical Field

[0001] The present application relates to the field of physical separation technology, and in particular to a device for detecting gaseous media in the air. Background Art

[0002] The air carries some corrosive gases, such as sulfur dioxide and nitrogen dioxide, due to industrial emissions or natural generation. These corrosive gases can cause damage to the human body when inhaled. In addition, these corrosive gases will form highly corrosive solutions when dissolved in water. When these solutions adhere to the surface of metal products, they will corrode the metal products and cause damage to the metal products. Therefore, in production and life, it is necessary to detect corrosive gases in the air to protect human health and understand and evaluate the use of metal products.

[0003] In the related art, corresponding corrosive medium concentration detection devices are usually used to detect gaseous media in the air. In order to ensure the detection accuracy, these corrosive medium concentration detection devices are usually large in size and weight, difficult to move, and complex to operate and maintain. In addition, these corrosive medium concentration detection devices directly detect the air, which will cause solid impurities in the air to accumulate in the device, requiring users to clean it regularly, otherwise it is easy to cause damage to the device. Summary of the invention

[0004] Based on this, it is necessary to provide a device for detecting gaseous media in the air to address the problems that the above-mentioned device is difficult to operate and needs regular cleaning.

[0005] The present application provides a device for detecting gaseous media in the air, including a shell, a cleaning mechanism, a negative pressure collection mechanism and a detection mechanism, wherein the side wall of the shell is provided with an air inlet and an air outlet. The cleaning mechanism, the negative pressure collection mechanism and the detection component are all arranged in the shell. Among them, the input end of the cleaning mechanism is connected to the air inlet, and the output end of the detection component is connected to the air outlet; the negative pressure collection mechanism can form an airflow from the air inlet to the air outlet, so that the gas outside the shell flows through the cleaning mechanism and the detection component through the air inlet. The cleaning mechanism is used to remove solid impurities in the gas flowing through the cleaning mechanism. When the airflow generated by the negative pressure collection mechanism flows through the cleaning mechanism, the cleaning mechanism can move driven by the airflow to perform self-cleaning. The detection component is used to detect the gas flowing through the detection component.

[0006] In some embodiments, the cleaning mechanism includes a first filter, an impeller, a bidirectional threaded screw, a movable seat and a brush. The first filter is laid at the input end of the negative pressure collection mechanism, and the first filter is used to block solid impurities in the airflow passing through. The impeller and the bidirectional threaded screw are both arranged on the side of the first filter close to the air inlet. The impeller is connected to the bidirectional threaded screw, and the impeller is used to rotate under the drive of the airflow to drive the bidirectional threaded screw to rotate; the movable seat is threadedly matched with the bidirectional threaded screw; the brush is connected to the movable seat and contacts the first filter.

[0007] In one of the embodiments, the negative pressure collection mechanism includes a confluence portion, a negative pressure portion and a guide portion which are sequentially arranged along the airflow direction, the confluence portion is a trumpet-shaped structure, and the end of the confluence portion with a larger diameter is connected to the cleaning mechanism; the negative pressure portion is connected to the end of the confluence portion with a smaller diameter, a negative pressure fan is provided inside the negative pressure portion, and the negative pressure fan is used to form an airflow; the guide portion is a tubular structure and is used to guide the airflow to the detection component.

[0008] In some embodiments, the detection component includes a gas concentration detector, an input end of the gas concentration detector is connected to the negative pressure collection mechanism, and an output end of the gas concentration detector is connected to the gas outlet.

[0009] In some embodiments, the device for detecting gaseous media in the air also includes a filter component, the input end of the filter component is connected to the detection component, and the output end is connected to the air outlet to remove harmful gaseous media in the gas flowing through the filter component.

[0010] In some embodiments, the filter assembly includes a fan installation cavity and an activated carbon cavity that are connected to each other. An auxiliary fan is provided in the fan installation cavity, and the auxiliary fan is used to form an airflow flowing toward the air outlet; activated carbon is placed in the activated carbon cavity to absorb harmful gas media in the gas flowing through the activated carbon cavity.

[0011] In some of the embodiments, the device for detecting gaseous media in the air also includes an air collection hood and a second filter. The air collection hood is a trumpet-shaped structure, and the outer wall of the end with a larger diameter of the air collection hood is sealed to the inner wall of the air inlet. The end with a smaller diameter of the air collection hood is located in the shell and connected to the cleaning mechanism; the second filter cover is arranged on the air inlet.

[0012] In some embodiments, the device for detecting gaseous media in the air also includes a slag discharge mechanism, which is arranged at the bottom of the shell corresponding to the cleaning mechanism, and the slag discharge mechanism penetrates the side wall of the shell to discharge the solid impurities removed by the cleaning mechanism to the outside of the shell.

[0013] In some embodiments, the slag discharge mechanism includes a control valve and a slag discharge groove opened on the inner wall of the shell, the slag discharge groove is located at the bottom of the cleaning mechanism, the slag discharge groove is a trumpet-shaped structure, and the cleaning mechanism is located at the end of the slag discharge groove with a larger diameter; the control valve is arranged at the bottom of the slag discharge groove, when the control valve is opened, the slag discharge groove is connected to the outside of the shell to discharge solid impurities, when the control valve is closed, the solid impurities are stored in the slag discharge groove.

[0014] In some of the embodiments, the device for detecting gaseous medium in the air further includes a display component, which is disposed on the outer wall of the shell and is electrically connected to the detection component to display data detected by the detection component.

[0015] The above-mentioned device for detecting gaseous media in the air is provided with a cleaning mechanism, a negative pressure collection mechanism and a detection component in the shell; an airflow flowing to the air outlet is formed in the shell through the negative pressure collection component, so that the passage inside the shell forms a negative pressure, and the air outside the shell enters the shell through the air inlet. When the air entering the shell flows through the cleaning mechanism, the solid impurities in the air are blocked or removed by the cleaning mechanism, and at the same time, the airflow can drive the cleaning mechanism to start moving, and the solid impurities accumulated at the cleaning mechanism are transferred to a designated position or discharged, so as to avoid the accumulation of solid impurities affecting the normal operation of the device. The air after the solid impurities are removed flows forward to the negative pressure collection mechanism, and the negative pressure collection mechanism provides power for the air so that the air can continue to flow to the air outlet. The air flowing through the negative pressure collection mechanism continues to flow forward to the detection component, and the gas medium in the air is detected by the detection component to obtain relevant data. By providing a cleaning mechanism, the device can effectively remove solid impurities in the air without causing accumulation, ensure that the air entering the detection component does not carry solid impurities, enable the negative pressure collection mechanism and the detection component to operate stably, and reduce the failure rate; the cleaning mechanism is driven by the airflow, and there is no need to additionally provide a motor or other driving components, which can effectively reduce the size and weight of the device and improve portability; and the air can be collected and the solid impurities in the air can be removed by simply starting the negative pressure collection mechanism, and operation and maintenance are relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an appearance diagram of an embodiment of a device for detecting gaseous media in the air according to the present application.

[0017] Figure 2 This is a cross-sectional view of an embodiment of a device for detecting gaseous media in the air of the present application in the middle of a shell along the length direction of the shell.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the connection between an impeller and a bidirectional threaded screw in an embodiment of a device for detecting a gas medium in the air of the present application.

[0020] In the figure, 100, shell; 110, air inlet; 120, air outlet; 130, air collecting hood; 140, second filter; 150, display component; 200, cleaning mechanism; 210, first filter; 220, impeller; 230, bidirectional threaded screw; 240, movable seat; 250, brush; 300, negative pressure collecting mechanism; 310, confluence part; 320, negative pressure part; 321, negative pressure fan; 330, guide part; 400, detection component; 410, gas concentration detector; 500, filter component; 510, fan installation cavity; 511, auxiliary fan; 520, activated carbon cavity; 600, slag discharge mechanism; 610, control valve; 620, slag discharge trough. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0022] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0023] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0025] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0026] See also Figure 1 , Figure 1 A schematic diagram of the appearance of a device for detecting a gaseous medium in the air in one embodiment of the present application is shown. A device for detecting a gaseous medium in the air provided by the present application comprises a housing 100, a cleaning mechanism 200, a negative pressure collection mechanism 300 and a detection assembly 400. An air inlet 110 and an air outlet 120 are provided on the side wall of the housing 100. The cleaning mechanism 200, the negative pressure collection mechanism 300 and the detection assembly 400 are all arranged in the housing 100. Among them, the input end of the cleaning mechanism 200 is connected to the air inlet 110, and the output end of the detection assembly 400 is connected to the air outlet 120; the negative pressure collection mechanism 300 can form an airflow from the air inlet 110 to the air outlet 120, so that the gas outside the housing 100 flows through the cleaning mechanism 200 and the detection assembly 400 through the air inlet 110. The cleaning mechanism 200 is used to remove solid impurities in the gas flowing through the cleaning mechanism 200. When the airflow generated by the negative pressure collection mechanism 300 flows through the cleaning mechanism 200, the cleaning mechanism 200 can move driven by the airflow to perform self-cleaning. The detection component 400 is used to detect the gas flowing through the detection component 400.

[0027] See also Figure 1 and Figure 2It should be noted that the air inlet 110, the cleaning mechanism 200, the negative pressure collection mechanism 300, the detection component 400 and the air outlet 120 are connected in sequence by direct connection or pipeline connection to form an airflow path. The negative pressure collection mechanism 300 is used to form an airflow in the airflow path to the air outlet 120, so that the gas in the airflow path is discharged through the air outlet 120. Since the air pressure in the airflow path is relatively low, the air outside the housing 100 enters the airflow path through the air inlet 110 and forms an airflow.

[0028] After the air enters the housing 100 through the air inlet 110, it flows through the cleaning mechanism 200. In some embodiments, the cleaning mechanism 200 removes solid impurities (such as sand, debris, etc.) in the air by physical barriers or chemical reactions, and the gas after the solid impurities are removed can continue to move along the airflow path, and the removed solid impurities will remain in the cleaning mechanism 200.

[0029] It should be noted here that when too much solid impurities accumulate in the cleaning mechanism 200, it will affect the cleaning efficiency of the cleaning mechanism 200, and even cause the cleaning mechanism 200 to fail to clean normally. Because in the present application, when the airflow flows through the cleaning mechanism 200, the cleaning mechanism 200 moves driven by the airflow, so that the solid impurities accumulate at a designated position or are directly discharged from the shell 100, thereby not affecting the normal operation of the cleaning mechanism 200. The gas after the impurities are removed flows to the negative pressure collection mechanism 300, and the flow speed is increased under the action of the negative pressure collection mechanism 300. The gas then enters the gas detection component 400, and the gas composition is detected to obtain relevant parameters. After the gas detection is completed, it is discharged from the shell 100 through the gas outlet 120.

[0030] Through the above arrangement, solid impurities in the air to be detected can be removed to prevent the accumulation of solid impurities from affecting the detection of the device or the normal operation of the device, thereby reducing the failure rate. No additional motor is required to drive the cleaning mechanism 200 to operate, which can effectively reduce the overall volume and weight of the device, improve portability, and has a simple structure, and is easy to operate and maintain.

[0031] In addition, a carrying handle is provided on the top of the housing 100, which is convenient for users to move the device and improves portability. Foot pads are provided at the four corners of the bottom of the housing 100 to ensure that the housing 100 can be stably placed on a support surface when in use.

[0032] See also Figure 2 , Figure 3 and Figure 4In some embodiments, the cleaning mechanism 200 includes a first filter 210, an impeller 220, a bidirectional threaded screw 230, a movable seat 240 and a brush 250. The first filter 210 is laid at the input end of the negative pressure collection mechanism 300, and the first filter 210 is used to block solid impurities in the air flow passing through. The impeller 220 and the bidirectional threaded screw 230 are both arranged on the side of the first filter 210 close to the air inlet 110. The impeller 220 is connected to the bidirectional threaded screw 230. The impeller 220 is used to rotate under the drive of the air flow to drive the bidirectional threaded screw 230 to rotate; the movable seat 240 is threadedly matched with the bidirectional threaded screw 230; the brush 250 is connected to the movable seat 240 and contacts the first filter 210.

[0033] It should be noted that the air entering the air flow path from the air inlet 110 needs to pass through the first filter 210 before it can continue to move along the air flow path. The filter holes on the first filter 210 have a small aperture, which can allow gas to pass through and block solid impurities in the air. The solid impurities are blocked by the first filter 210 on the side of the first filter 210 close to the air inlet 110. The impeller 220 is arranged between the air inlet 110 and the first filter 210, and is connected to the middle of the bidirectional threaded screw 230, and the two ends of the bidirectional threaded screw 230 are connected to the inner wall of the housing 100; each bidirectional threaded screw 230 is provided with two corresponding moving seats 240, and the two moving seats 240 are respectively arranged on both sides of the impeller 220, and reciprocate along the bidirectional threaded screw 230 between the impeller 220 and the inner wall of the housing 100; two brushes 250 are provided corresponding to the moving seats 240, and reciprocate with the moving seats 240.

[0034] When air flows in the air flow passage, the air flow passing through the impeller 220 will drive the impeller 220 to rotate, and the impeller 220 will drive the bidirectional threaded screw 230 to rotate, so that the movable seat 240 reciprocates along the bidirectional threaded screw 230, thereby driving the brush 250 to reciprocate to brush off the solid impurities accumulated on the side of the first filter 210 close to the air inlet 110, ensuring that the surface of the first filter 210 remains clean to obtain a higher cleaning efficiency.

[0035] See also Figure 2 In one embodiment, the negative pressure collection mechanism 300 includes a confluence portion 310, a negative pressure portion 320 and a guide portion 330 which are sequentially arranged along the airflow direction. The confluence portion 310 is a trumpet-shaped structure, and the end of the confluence portion 310 with a larger diameter is connected to the cleaning mechanism 200; the negative pressure portion 320 is connected to the end of the confluence portion 310 with a smaller diameter, and a negative pressure fan 321 is provided inside the negative pressure portion 320, and the negative pressure fan 321 is used to form an airflow; the guide portion 330 is a tubular structure and is used to guide the airflow to flow toward the detection component 400.

[0036] It should be noted that the diameter of the end of the confluence part 310 close to the cleaning mechanism 200 is larger, so that the air can fully contact the cleaning mechanism 200 to improve the cleaning effect of the cleaning mechanism 200; the diameter of the end of the confluence part 310 close to the negative pressure part 320 is smaller, so that the gas flowing into the confluence part 310 from the cleaning mechanism 200 can be gathered, thereby increasing the air flow velocity at the confluence part 310, and it is easier to drive the cleaning mechanism 200 to move. The channel diameter of the negative pressure part 320 and the guide part 330 is less than or equal to the minimum diameter of the confluence part 310 to ensure the effect of improving the gas flow rate; the negative pressure fan 321 is installed in the negative pressure part 320, and the air flow is formed by the rotation of the fan blades. The rotation power of the negative pressure fan 321 can be changed according to actual needs to adjust the movement rate of the cleaning mechanism 200. The guide part 330 is a connecting pipe that guides the air flow to the detection component 400 for detection.

[0037] In some of the embodiments, the detection component 400 includes a gas concentration detector 410 , an input end of the gas concentration detector 410 is connected to the negative pressure collection mechanism 300 , and an output end of the gas concentration detector 410 is connected to the gas outlet 120 .

[0038] It should be noted that the gas concentration detector 410 is provided with a variety of gas detectors, which can detect the content of a variety of gases in the air, thereby obtaining the required data.

[0039] In some of the embodiments, the device for detecting gaseous media in the air further includes a filter assembly 500, the input end of the filter assembly 500 is connected to the detection assembly 400, and the output end is connected to the gas outlet 120 to remove harmful gaseous media in the gas flowing through the filter assembly 500.

[0040] It should be noted that the filter component 500 is arranged between the detection component 400 and the air outlet 120. The gas flowing through the detection component 400 enters the filter component 500, and the gas purified by the filter component 500 is discharged through the air outlet 120, which can purify the air and improve the air quality of the detection location to a certain extent.

[0041] In some of the embodiments, the filter assembly 500 includes a fan installation cavity 510 and an activated carbon cavity 520 that are connected to each other. An auxiliary fan 511 is provided in the fan installation cavity 510, and the auxiliary fan 511 is used to form an airflow flowing to the air outlet 120; activated carbon is placed in the activated carbon cavity 520 to absorb harmful gas media in the gas flowing through the activated carbon cavity 520.

[0042] It should be noted that the airflow first enters the fan installation chamber 510, and the auxiliary fan 511 provides a sufficient flow rate. After the gas increases the flow rate, it enters the activated carbon chamber 520, and the harmful gas medium in the gas flowing through the activated carbon chamber 520 is removed by activated carbon adsorption, and finally discharged from the housing 100. Since the activated carbon in the activated carbon chamber 520 needs to be densely stacked to improve the purification effect; by setting the auxiliary fan 511 in front of the activated carbon chamber 520, it is ensured that the gas has a large flow rate before entering the activated carbon chamber 520, and can smoothly pass through the activated carbon chamber 520 and be discharged from the gas outlet 120.

[0043] In some of the embodiments, the device for detecting gaseous media in the air also includes an air collecting hood 130 and a second filter 140. The air collecting hood 130 is a trumpet-shaped structure. The outer wall of the end with a larger diameter of the air collecting hood 130 is sealed to the inner wall of the air inlet 110. The end with a smaller diameter of the air collecting hood 130 is located in the shell 100 and is connected to the cleaning mechanism 200. The second filter 140 covers the air inlet 110.

[0044] It should be noted that the end of the air collecting hood 130 with a larger diameter is arranged corresponding to the air inlet 110, so that the gas entering the housing 100 from the air inlet 110 is collected through the air collecting hood 130; the opening of the end of the air collecting hood 130 with a smaller diameter is directly opposite to the driving structure (impeller) of the cleaning mechanism 200, so that the airflow collected by the air collecting hood 130 can be directly used to drive the cleaning mechanism 200 to move. Since the gas collected by the air collecting hood 130 has a faster flow rate, it is easier to drive the cleaning mechanism 200 to move. The second filter 140 is covered on the air inlet 110 to block solid impurities in the air entering the housing 100. When too many solid impurities are accumulated on the surface of the second filter 140, it can be cleaned manually, or the filter hole diameter on the second filter 140 can be appropriately increased to slow down the accumulation speed of impurities on the surface of the second filter 140.

[0045] Since the air collecting hood 130 is a trumpet-shaped structure, there is a large space between the outer wall of the air collecting hood 130 and the inner wall of the shell 100, and part of the air entering the shell 100 will flow back and accumulate in the space between the outer wall of the air collecting hood 130 and the inner wall of the shell 100; therefore, a sealing plate is provided at the end of the air collecting hood 130 with a smaller diameter, and the sealing plate is provided between the outer wall of the air collecting hood 130 and the inner wall of the shell 100 to prevent the air entering the shell 100 from accumulating in the space between the outer wall of the air collecting hood 130 and the inner wall of the shell 100.

[0046] See also Figure 2 and Figure 3In some embodiments, the device for detecting gaseous media in the air also includes a slag discharge mechanism 600, which is arranged at the bottom of the shell 100 corresponding to the cleaning mechanism 200, and the slag discharge mechanism 600 penetrates the side wall of the shell 100 to discharge the solid impurities removed by the cleaning mechanism 200 to the outside of the shell 100.

[0047] It should be noted that the slag discharge mechanism 600 is arranged below the cleaning mechanism 200, and the solid impurities cleaned by the cleaning mechanism 200 will fall into the slag discharge mechanism 600 and be discharged from the shell by the slag discharge mechanism 600 for subsequent use.

[0048] In some of the embodiments, the slag discharge mechanism 600 includes a control valve 610 and a slag discharge groove 620 opened on the inner wall of the shell 100, the slag discharge groove 620 is located at the bottom of the cleaning mechanism 200, the slag discharge groove 620 is a trumpet-shaped structure, and the cleaning mechanism 200 is located at the end of the slag discharge groove 620 with a larger diameter; the control valve 610 is arranged at the bottom of the slag discharge groove 620, when the control valve 610 is opened, the slag discharge groove 620 is connected to the outside of the shell 100 to discharge solid impurities, when the control valve 610 is closed, the solid impurities are stored in the slag discharge groove 620.

[0049] It should be noted that the end with a larger diameter of the slag discharge groove 620 is used to receive solid impurities dropped by the cleaning mechanism 200. When the device is running, the control valve 610 remains closed, and solid impurities accumulate in the slag discharge groove 620 to ensure that the impurities do not affect the normal operation of the cleaning mechanism 200; after the operation is completed or after a period of operation, the control valve 610 is opened, and the impurities in the slag discharge groove 620 are discharged from the housing 100 through the bottom of the slag discharge groove 620 under the action of gravity. After the impurities are discharged, the control valve 610 is closed, and detection can be continuously performed during this process.

[0050] See also Figure 1 In some of the embodiments, the device for detecting gaseous media in the air further includes a display component 150, which is disposed on the outer wall of the housing 100 and is electrically connected to the detection component 400 to display data detected by the detection component 400.

[0051] It should be noted that the display component 150 is disposed on the top of the housing 100 and can display the parameters, power, etc. detected by the detection component 400, and the information is convenient for users to observe and read the data.

[0052] In addition, the device for detecting gaseous media in the air also includes a battery arranged in the shell 100, and the gas concentration detector 410, the negative pressure fan 321, the auxiliary fan 511, the control valve 610 and the display component 150 are all electrically connected to the battery, and the battery is used to power various electrical appliances.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A device for detecting gaseous media in the air, characterized in that: It includes a shell, a cleaning mechanism, a negative pressure collection mechanism and a detection component, and the side wall of the shell is provided with an air inlet and an air outlet; The cleaning mechanism, the negative pressure collection mechanism and the detection component are all arranged in the shell; wherein the input end of the cleaning mechanism is communicated with the air inlet, and the output end of the detection component is communicated with the air outlet; the negative pressure collection mechanism can form an airflow from the air inlet to the air outlet, so that the gas outside the shell flows through the cleaning mechanism and the detection component through the air inlet; The cleaning mechanism is used to remove solid impurities in the gas flowing through the cleaning mechanism. When the airflow generated by the negative pressure collection mechanism flows through the cleaning mechanism, the cleaning mechanism can move driven by the airflow to perform self-cleaning; The detection component is used to detect the gas flowing through the detection component.

2. The device for detecting gaseous medium in air according to claim 1, characterized in that: The cleaning mechanism comprises a first filter screen, an impeller, a bidirectional threaded screw, a movable seat and a brush, wherein the first filter screen is laid at the input end of the negative pressure collection mechanism, and the first filter screen is used to block solid impurities in the airflow passing therethrough; The impeller and the bidirectional threaded screw are both arranged on a side of the first filter screen close to the air inlet, the impeller is connected to the bidirectional threaded screw, and the impeller is used to rotate under the drive of airflow to drive the bidirectional threaded screw to rotate; the movable seat is threadedly matched with the bidirectional threaded screw; the brush is connected to the movable seat and in contact with the first filter screen.

3. The device for detecting gaseous medium in air according to claim 1, characterized in that: The negative pressure collection mechanism includes a confluence portion, a negative pressure portion and a guide portion which are arranged in sequence along the airflow direction. The confluence portion is a trumpet-shaped structure, and the end of the confluence portion with a larger diameter is connected to the cleaning mechanism; the negative pressure portion is connected to the end of the confluence portion with a smaller diameter, and a negative pressure fan is provided inside the negative pressure portion, and the negative pressure fan is used to form an airflow; the guide portion is a tubular structure, and is used to guide the airflow to flow toward the detection component.

4. The device for detecting gaseous medium in air according to claim 1, characterized in that: The detection component comprises a gas concentration detector, an input end of the gas concentration detector is connected to the negative pressure collection mechanism, and an output end of the gas concentration detector is communicated with the gas outlet.

5. The device for detecting gaseous medium in air according to claim 1, characterized in that: It also includes a filter component, the input end of the filter component is connected to the detection component, and the output end is connected to the gas outlet to remove harmful gas media in the gas flowing through the filter component.

6. The device for detecting gaseous medium in air according to claim 5, characterized in that: The filter assembly includes a fan installation cavity and an activated carbon cavity which are connected to each other. An auxiliary fan is provided in the fan installation cavity, and the auxiliary fan is used to form an airflow flowing toward the air outlet. Activated carbon is placed in the activated carbon cavity to absorb harmful gas media in the gas flowing through the activated carbon cavity.

7. The device for detecting gaseous medium in air according to claim 1, characterized in that: It also includes an air collecting hood and a second filter screen, wherein the air collecting hood is a trumpet-shaped structure, the outer wall of the end with a larger diameter of the air collecting hood is sealedly connected to the inner wall of the air inlet, and the end with a smaller diameter of the air collecting hood is located in the shell and connected to the cleaning mechanism; the second filter screen cover is arranged on the air inlet.

8. The device for detecting gaseous medium in air according to claim 1, characterized in that: It also includes a slag discharge mechanism, which is arranged at the bottom of the shell corresponding to the cleaning mechanism, and the slag discharge mechanism penetrates the side wall of the shell to discharge the solid impurities removed by the cleaning mechanism to the outside of the shell.

9. The device for detecting gaseous medium in air according to claim 8, characterized in that: The slag discharge mechanism includes a control valve and a slag discharge groove opened on the inner wall of the shell, the slag discharge groove is located at the bottom of the cleaning mechanism, the slag discharge groove is a trumpet-shaped structure, and the cleaning mechanism is located at the end of the slag discharge groove with a larger diameter; the control valve is arranged at the bottom of the slag discharge groove, when the control valve is opened, the slag discharge groove is connected with the outside of the shell to discharge solid impurities, when the control valve is closed, the solid impurities are stored in the slag discharge groove.

10. The device for detecting gaseous medium in air according to claim 1, characterized in that: It also includes a display component, which is arranged on the outer wall of the shell and is electrically connected to the detection component to display data detected by the detection component.

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