Portable supervision detection device

Abstract

The invention provides a portable supervision detection device which comprises an air inlet fan, a dryer, a conveying pipe and a detection box which are sequentially connected, the dryer comprises an outer barrel, an inner pipe body and an air heater, an air inlet and an air outlet are formed in the two ends of the outer barrel respectively, the inner pipe body is arranged in the outer barrel, and the air inlet and the air outlet are communicated with the inner pipe body. A circulation cavity which is not communicated with the air inlet and the air outlet is defined between the outer wall of the inner pipe body and the inner wall of the outer barrel, a plurality of air inlets and air outlets are formed in the side wall of the outer barrel, and all the air inlets are communicated with the air heater. According to the dust removal device, the air inlet fan sucks dust-containing air in a construction site into the inner pipe body through the air inlet, at the moment, the air heater introduces hot air into the circulation cavity through the air inlets, and the dust-containing air entering the inner pipe body is dried and dehumidified; the dried and dehumidified dusty air is conveyed into the detection box through the air outlet and the conveying pipe, so that dust in the dusty air is prevented from being adhered into the conveying pipe, the detection error is reduced, and the detection precision is improved.

Description

Technical Field

[0001] The present application relates to the field of supervision equipment, and in particular to a portable supervision detection device. Background Art

[0002] Since a large amount of dust will be generated during the construction process, the dust will cause harm to the health of the construction workers after being inhaled. Therefore, in order to ensure the health of the construction workers, it is necessary to monitor and detect the dust concentration in the air at the construction site.

[0003] When monitoring and detecting the dust concentration in the air at the construction site, the air inlet fan transports the dusty air at the construction site to the accommodating cavity of the detection box through the delivery pipe. At the same time, the detection head in the detection box detects the dust concentration of the dusty air.

[0004] However, when the air humidity at the construction site is high, the dust in the dusty air easily adheres to the conveying pipe, reducing the dustiness of the dusty air entering the accommodating cavity of the detection box, which in turn leads to huge errors in the detection results and low detection accuracy. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a portable supervision detection device to solve the technical problem in the prior art that the air humidity at the construction site is high, thereby reducing the accuracy of the dust detection result.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a portable supervision detection device, including an air inlet fan, a dryer, a conveying pipe and a detection box connected in sequence; The dryer comprises an outer cylinder, an inner tube and a hot air blower, the two ends of the outer cylinder are respectively provided with an air inlet and an air outlet, the inner tube is installed in the outer cylinder, the two ends of the inner tube are connected with the air inlet and the air outlet in a one-to-one correspondence, the outer wall of the inner tube and the inner wall of the outer cylinder form a circulation cavity which is not connected with the air inlet and the air outlet, the side wall of the outer cylinder is provided with a plurality of air inlets and air outlets for connecting the circulation cavity with the external space, and each of the air inlets is connected with the hot air blower; The air inlet, the inner tube body, the air outlet, the delivery pipe and the detection box are connected in sequence.

[0007] Furthermore, the number of the dryers is set to be multiple, and the multiple dryers are connected end to end in sequence to form a dryer group, the air inlet of the dryer located at the head end of the dryer group is connected to the air inlet fan, and the air outlet of the dryer located at the tail end of the dryer group is connected to and communicated with the conveying pipe.

[0008] Furthermore, each pair of connected dryers in the dryer group is detachably connected via a connecting structure.

[0009] Furthermore, the connecting structure includes an L-shaped hook and an L-shaped groove, the L-shaped hook is connected to one end of the outer cylinder body where the air outlet is opened, and the L-shaped groove is opened at one end of the outer cylinder body where the air inlet is opened, and the L-shaped hook at one end of the dryer is used to be clamped with the L-shaped groove at the other adjacent end of the dryer.

[0010] Furthermore, the inner tube body has a plurality of protrusions distributed along its axial direction, and each of the protrusions is protruding toward the side wall of the outer tube body, and the inner side wall of the outer tube body is connected with bumps on both sides corresponding to each of the protrusions.

[0011] Furthermore, a plurality of air inlets are provided on the outer cylinder body at locations directly opposite to each of the convex portions.

[0012] Furthermore, the outer wall of the outer cylinder is connected to a first heat insulation layer.

[0013] Furthermore, a plurality of heating wires are wound around the outer wall of the delivery pipe.

[0014] Furthermore, the outer wall of the delivery pipe is connected to a second thermal insulation layer, each of the heating wires is installed between the outer wall of the delivery pipe and the second thermal insulation layer, and both ends of each of the heating wires pass through the second thermal insulation layer.

[0015] Furthermore, an air outlet fan is installed in the end of the delivery pipe connected to the detection box.

[0016] The portable monitoring and detection device provided by the present application has the following beneficial effects: The portable monitoring and detection device provided by the present application, when monitoring and detecting the dust concentration in the air at the construction site, the air intake fan sucks the dusty air at the construction site into the inner tube body through the air inlet at the end of the outer cylinder. At this time, the hot air blower introduces hot air into the circulation cavity through each air inlet, and dries and dehumidifies the dusty air entering the inner tube body. The dusty air after drying and dehumidification is then transported to the detection box through the air outlet at the end of the outer cylinder and the delivery pipe, so as to prevent the dust in the dusty air from adhering to the delivery pipe, reduce the detection error, and improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the overall structure of a portable monitoring and detection device provided in an embodiment of the present application (taking two dryers as an example); Figure 2 A schematic diagram of the internal structure of a dryer of a portable monitoring and detection device provided in an embodiment of the present application; Figure 3 A schematic diagram of the connection of a dryer group of a portable monitoring and detection device provided in an embodiment of the present application (taking two dryers as an example); Figure 4 A schematic diagram of the structure of the connection structure of the portable monitoring detection device provided in the embodiment of the present application (the material of the first heat insulation layer and part of the outer cylinder is removed); Figure 5 for Figure 4 A partial enlarged view of the middle A; Figure 6 A schematic diagram of the installation of the heating wire of the portable monitoring detection device provided in an embodiment of the present application (the second insulation layer is cut off); Figure 7 A partial cross-sectional view of a dryer of the portable monitoring and detection device provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are: 1. Air inlet fan; 2. dryer; 21. outer cylinder; 211. air inlet; 212. air outlet; 213. air inlet; 214. air outlet; 22. inner tube; 23. flow cavity; 24. convex block; 3. Delivery pipe; 4. Detection box; 5. Connecting structure; 51. L-shaped hook; 52. L-shaped groove; 6. The first thermal insulation layer; 7. Heating wire; 8. Second thermal insulation layer; 9. Air outlet fan. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

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

[0024] See also Figures 1 to 7 , the embodiment of the present application provides a portable monitoring detection device, including an air inlet fan 1, a dryer 2, a conveying pipe 3 and a detection box 4 connected in sequence. Among them, the detection box 4 includes a box body (not shown in the figure) for accommodating dusty air, and a detection head (not shown in the figure) for detecting the dust content of the dusty air is installed in the box body. The detection principle of the detection head is the existing technology and will not be repeated here. The dryer 2 includes an outer cylinder 21, an inner tube body 22 and a hot air blower (not shown in the figure). The two ends of the outer cylinder 21 are respectively provided with an air inlet 211 and an air outlet 212, that is, the first end of the outer cylinder 21 is provided with an air inlet 211, and the second end of the outer cylinder 21 is provided with an air outlet 212. The inner tube body 22 is installed in the outer cylinder 21, and the two ends of the inner tube body 22 are connected to the air inlet 211 and the air outlet 212 in a one-to-one correspondence, that is, the first end of the inner tube body 22 is connected to the air inlet 211, and the second end of the inner tube body 22 is connected to the air inlet 211. The air outlet 212 is connected, and the outer wall of the inner tube body 22 and the inner wall of the outer cylinder body 21 enclose a flow cavity 23 that is not connected to the air inlet 211 and the air outlet 212. The side wall of the outer cylinder body 21 is provided with a plurality of air inlets 213 and air outlets 214 for connecting the flow cavity 23 and the external space. Each air inlet 213 is connected to the hot air blower. Specifically, each air inlet 213 can be equipped with a branch air delivery pipe (not shown in the figure), and each branch air delivery pipe is connected to the hot air blower through a main air delivery pipe (not shown in the figure). The air inlet 211, the inner tube body 22, the air outlet 212, the delivery pipe 3 and the detection box 4 are connected in sequence.

[0025] The portable monitoring and detection device provided in this embodiment, when monitoring and detecting the dust concentration in the air at the construction site, the air intake fan 1 sucks the dusty air at the construction site into the inner tube body 22 through the air inlet 211 at the end of the outer cylinder 21. At this time, the hot air blower introduces hot air into the circulation cavity 23 through each air inlet 213, and dries and dehumidifies the dusty air entering the inner tube body 22. The dusty air after drying and dehumidification is then transported to the detection box 4 through the air outlet 212 at the end of the outer cylinder 21 and the conveying pipe 3, thereby reducing the humidity of the dusty air, preventing the dust in the dusty air from adhering to the conveying pipe 3, reducing the detection error, and improving the detection accuracy.

[0026] In one embodiment of the present application, see Figures 1 to 7 The number of dryers 2 is set to be multiple, and multiple dryers 2 are connected end to end in sequence to form a dryer 2 group, the air inlet 211 of the dryer 2 at the head end of the dryer 2 group is connected to the air inlet fan 1, and the air outlet 212 of the dryer 2 at the tail end of the dryer 2 group is connected to and communicates with the conveying pipe 3. Among them, the number of dryers 2 can be set to two, three, four or other numbers, which can be determined according to the actual location of the construction site, and is not limited here.

[0027] In this embodiment, a plurality of dryers 2 are arranged between the air inlet fan 1 and the conveying pipe 3, which can increase the drying time of the moist dusty air, thereby further reducing the humidity of the dusty air, further reducing the possibility of dust in the dusty air adhering to the conveying pipe 3, further reducing the detection error, and improving the detection accuracy.

[0028] In one embodiment of the present application, see Figures 1 to 7 Each pair of connected dryers 2 in the dryer group 2 is detachably connected via a connecting structure 5.

[0029] In this embodiment, since each pair of connected dryers 2 in the dryer group 2 is detachably connected via a connecting structure 5, it is not only convenient to repair or replace a single dryer 2 and reduce maintenance costs, but also each dryer 2 in the dryer group 2 can be transported separately to the construction site and then assembled on site, which has the advantage of easy transportation.

[0030] Specifically, the connecting structure 5 includes an L-shaped hook 51 and an L-shaped groove 52. The L-shaped hook 51 is connected to one end of the outer cylinder 21 where an air outlet 212 is provided. The L-shaped groove 52 is provided at one end of the outer cylinder 21 where an air inlet 211 is provided. The L-shaped hook 51 at the end of one dryer 2 is used to engage with the L-shaped groove 52 at the end of another adjacent dryer 2.

[0031] When connecting two dryers 2 through the connecting structure 5, firstly, the L-shaped hook 51 on one dryer 2 is aligned with the L-shaped groove 52 on the other dryer 2, and then the L-shaped hook 51 is inserted into the L-shaped groove 52. At this time, the bending portion of the L-shaped hook 51 is separated from the bending portion of the L-shaped groove 52, and then the two dryers 2 are rotated to make the bending portion of the L-shaped hook 51 match the bending portion of the L-shaped groove 52, so that the two dryers 2 can be hooked and connected. The connecting structure 5 has the advantages of simple structure and convenient connection.

[0032] In one embodiment of the present application, see Figures 1 to 7 The inner tube body 22 has a plurality of protrusions distributed along its axial direction, and each protrusion is protruded toward the side wall of the outer tube body 21, and the inner side wall of the outer tube body 21 is connected with a protrusion 24 on both sides corresponding to each protrusion.

[0033] In heat transfer, the heat transfer characteristics of convex surfaces are compared to those of concave and flat structures. The convex structure can not only increase the heat transfer area, thereby improving the heat transfer efficiency, but also form eddies in the fluid, effectively enhancing convective heat transfer, thereby improving the heat transfer efficiency. In addition, the angular coefficient of convex heat transfer is larger than that of flat or concave surfaces. Among them, the angular coefficient is used to describe the ratio of the radiation energy emitted and absorbed by an object during the thermal radiation process relative to an ideal black body. It is quantified by comparing the difference between the actual emissivity of the object and the emissivity of the ideal black body. An angular coefficient greater than 1 indicates that the object emits more radiation energy, that is, the larger the angular coefficient, the better the radiation transfer performance. In addition, each convex part increases the transportation distance of the dust-laden air, thereby increasing the drying time of the humid dust-laden air. Therefore, the inner tube body 22 has a convex portion protruding toward the side wall of the outer tube body 21, and the inner wall of the outer tube body 21 is connected with a protrusion 24 on both sides corresponding to each convex portion, which can improve the heat radiation conduction capacity and heat transfer effect from the flow cavity 23 to the inner tube body 22, thereby better reducing the humidity of the dust-laden air, reducing the possibility of dust in the dust-laden air adhering to the conveying pipe 3, reducing the detection error, and improving the detection accuracy.

[0034] Preferably, a plurality of air inlets 213 are provided on the outer cylinder 21 at locations directly opposite to the convex portions.

[0035] Since multiple air inlets 213 are provided on the outer cylinder 21 opposite to each convex portion, convective heat exchange can be further enhanced, thereby improving heat transfer efficiency, thereby better reducing the humidity of the dust-laden air, reducing the possibility of dust in the dust-laden air adhering to the conveying pipe 3, reducing detection errors, and improving detection accuracy.

[0036] In one embodiment of the present application, see Figures 1 to 7The outer wall of the outer cylinder 21 is connected with a first heat insulation layer 6. The first heat insulation layer 6 can be set as a glass fiber layer, an asbestos layer, a salt wool layer or other material layer that can block heat flow transfer, which can be determined according to the construction site environment or the current market price, and is not limited here.

[0037] In this embodiment, a first heat insulation layer 6 is provided on the outer wall of the outer cylinder 21, which can not only reduce the heat overflow in the circulation cavity 23 and ensure the drying and dehumidification effect of the dust-containing air in the inner cylinder, but also prevent on-site construction personnel from accidentally touching the high-temperature outer cylinder 21 and getting burned, thereby ensuring the safety of the construction site.

[0038] In one embodiment of the present application, see Figures 1 to 7 A plurality of electric heating wires 7 are also wound around the outer wall of the delivery pipe 3 .

[0039] In this embodiment, a plurality of heating wires 7 are wound around the outer wall of the conveying pipe 3, which can further reduce the humidity of the dust-laden air and the possibility of dust in the dust-laden air adhering to the conveying pipe 3, further reducing the detection error and improving the detection accuracy.

[0040] Furthermore, the outer wall of the delivery pipe 3 is connected to a second heat insulation layer 8, each heating wire 7 is installed between the outer wall of the delivery pipe 3 and the second heat insulation layer 8, and both ends of each heating wire 7 pass through the second heat insulation layer 8. Among them, the second heat insulation layer 8 can be set as a glass fiber layer, an asbestos layer, a salt wool layer or other material layer that can block heat flow transfer, which can be determined according to the construction site environment or the market price of the material, and is not limited here.

[0041] In this embodiment, a first heat insulation layer 6 is provided on the outer wall of the conveying pipe 3, which can not only reduce the heat overflow in the conveying pipe 3 and ensure the drying and dehumidification effect of the dust-containing air in the conveying pipe 3, but also prevent on-site construction personnel from accidentally touching the high-temperature conveying pipe 3 and being scalded, thereby ensuring the safety of the construction site.

[0042] In one embodiment of the present application, see Figures 1 to 7 An air outlet fan 9 is also installed in the end of the conveying pipe 3 for connecting with the detection box 4.

[0043] In this embodiment, an air outlet fan 9 is installed in the end of the conveying pipe 3 connected to the detection box 4, which can ensure that the dust-containing air that has been dried and dehumidified flows smoothly into the detection box 4 to avoid gas blockage.

[0044] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A portable monitoring detection device, characterized in that: It comprises an air inlet fan (1), a dryer (2), a conveying pipe (3) and a detection box (4) which are connected in sequence; The dryer (2) comprises an outer cylinder (21), an inner tube (22) and a hot air blower, wherein the outer cylinder (21) is provided with an air inlet (211) and an air outlet (212) at two ends thereof, the inner tube (22) is installed in the outer cylinder (21), and the two ends of the inner tube (22) are connected to the air inlet (211) and the air outlet (212) in a one-to-one correspondence, the outer wall of the inner tube (22) and the inner wall of the outer cylinder (21) enclose a circulation cavity (23) which is not connected to the air inlet (211) and the air outlet (212), and the side wall of the outer cylinder (21) is provided with a plurality of air inlets (213) and air outlets (214) for connecting the circulation cavity (23) and an external space, and each of the air inlets (213) is connected to the hot air blower; The air inlet (211), the inner tube body (22), the air outlet (212), the delivery pipe (3) and the detection box (4) are connected in sequence.

2. The portable monitoring detection device according to claim 1, characterized in that: The number of the dryers (2) is set to be multiple, and the multiple dryers (2) are connected end to end in sequence to form a dryer (2) group, the air inlet (211) of the dryer (2) located at the head end of the dryer (2) group is connected to the air inlet fan (1), and the air outlet (212) of the dryer (2) located at the tail end of the dryer (2) group is connected to and communicates with the conveying pipe (3).

3. The portable monitoring detection device according to claim 2, characterized in that: Each pair of connected dryers (2) in the dryer (2) group is detachably connected via a connecting structure (5).

4. The portable monitoring detection device according to claim 3, characterized in that: The connection structure (5) comprises an L-shaped hook (51) and an L-shaped groove (52); the L-shaped hook (51) is connected to one end of the outer cylinder (21) provided with the air outlet (212); the L-shaped groove (52) is provided at one end of the outer cylinder (21) provided with the air inlet (211); the L-shaped hook (51) at the end of one dryer (2) is used for clamping with the L-shaped groove (52) at the end of another adjacent dryer (2).

5. The portable monitoring detection device according to any one of claims 1 to 3, characterized in that: The inner tube body (22) has a plurality of convex portions distributed along its axial direction, and each of the convex portions is convexly arranged toward the side wall of the outer tube body (21), and the inner side wall of the outer tube body (21) is connected to a protrusion (24) on both sides corresponding to each of the convex portions.

6. The portable monitoring detection device according to claim 5, characterized in that: A plurality of air inlets (213) are provided on the outer cylinder (21) at locations directly opposite to each of the convex portions.

7. The portable monitoring detection device according to any one of claims 1 to 3, characterized in that: The outer wall of the outer cylinder (21) is connected to a first heat insulation layer (6).

8. The portable monitoring detection device according to any one of claims 1 to 3, characterized in that: A plurality of electric heating wires (7) are also wound around the outer wall of the delivery pipe (3).

9. The portable monitoring detection device according to claim 8, characterized in that: The outer wall of the delivery pipe (3) is connected to a second thermal insulation layer (8), each of the heating wires (7) is installed between the outer wall of the delivery pipe (3) and the second thermal insulation layer (8), and both ends of each of the heating wires (7) pass through the second thermal insulation layer (8).

10. The portable monitoring detection device according to any one of claims 1 to 3, characterized in that: An air outlet fan (9) is also installed in the end of the delivery pipe (3) for connecting to the detection box (4).

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