Sensor convenient to disassemble and assemble

Abstract

The utility model discloses a sensor convenient to disassemble and assemble, which belongs to a detector body in the technical field of gas detectors, a mounting seat is fixedly arranged on the lower end face of the detector body, a protective cover with two open ends is vertically arranged in the mounting seat, and a sensor module with a downward gas inlet end is arranged in the protective cover and the mounting seat. A containing box with the hollow upper end face and the hollow lower end face is arranged in the protective cover and located below the sensor module, and the containing box is filled with an impurity removing agent. Through the arrangement of the protective cover and the locking ring, when impurity components in gas to be detected are changed, the components of an impurity removal agent in the accommodating box can be conveniently replaced, so that directional impurity removal is realized, the effect is remarkable, and the specific operation is as follows: the locking ring is taken out of the protective cover, then the accommodating box is taken out, and the accommodating box is integrally replaced; or the impurity removing agent in the containing box is independently replaced, then the containing box is placed in the protective cover, and then the locking ring is clamped into the first ring groove of the protective cover, so that the containing box is fixedly installed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection equipment, in particular to a sensor which is easy to assemble and disassemble. Background Art

[0002] Gas concentration detection is a very important technology. It can be used to detect the concentration of various gases in the air, including harmful gases, flammable gases, oxygen, etc. The concentration of these gases has an important impact on human health and safety, so timely detection and monitoring are required. Sensor detection method is a common gas concentration detection method, which uses sensors to detect gas concentration. Sensors can detect based on the chemical properties, electrical properties, optical properties, etc. of the gas. The sensor detection method has the advantages of fast response speed, high accuracy, and good reliability, so it is widely used in the field of gas concentration detection.

[0003] After searching, the patent publication number is: CN 104316112 A, which provides a variety of sensors that are easy to disassemble and assemble, and has the following technical solutions: a shell having an air inlet and an air outlet; a detection box having a plurality of electrochemical gas sensors arranged in its internal cavity; an air inlet pipe connecting the air inlet and the detection box; and a filter arranged at the front or rear side of the air inlet.

[0004] The filter provided in the above scheme is used to filter out moisture and / or other particulate matter in the gas, but the filter in the above scheme does not provide a scheme for replacing the filter. When the impurity composition in the detected gas changes, it is inconvenient to replace the filter according to different types of impurities to achieve the purpose of directional impurity removal. Utility Model Content

[0005] The utility model aims to provide a sensor which is easy to disassemble and assemble, and can conveniently replace the components of the impurity remover, thereby solving the problem that the impurity remover cannot be replaced according to different types of impurities to achieve directional impurity removal.

[0006] The utility model adopts the following technical scheme: a sensor that is easy to disassemble and assemble, including a detector body, a mounting seat fixedly arranged on the lower end surface of the detector body, a protective cover with openings at both ends vertically arranged in the mounting seat, a sensor module with an air inlet end facing downwards arranged in the protective cover and the mounting seat, a containing box with hollow upper and lower end surfaces arranged in the protective cover below the sensor module, the containing box is filled with an impurity remover, a locking ring is also arranged below the containing box in the protective cover, and the locking ring is clamped with a first ring groove opened on the inner side wall of the protective cover.

[0007] Furthermore, an annular protrusion is coaxially protruded from the lower portion of the inner side wall of the protective cover, and the annular protrusion divides the interior of the protective cover into an upper chamber and a lower chamber.

[0008] Furthermore, a waterproof and breathable film is adhered to the lower end surface of the accommodating box.

[0009] Furthermore, a first soft rubber gasket is arranged between the waterproof and breathable membrane and the locking ring, and the first soft rubber gasket is inserted into a second ring groove provided on the inner side wall of the protective cover.

[0010] Furthermore, a breathing device and a second soft rubber gasket are provided between the sensor module and the annular raised portion.

[0011] Furthermore, a window is provided on the side of the accommodating box, a wedge-shaped block is clamped in the window of the accommodating box, a through hole is provided at a position corresponding to the window of the accommodating box and a cover plate is detachably connected to a position corresponding to the through hole on the protective cover, and the through hole is sealed when the cover plate and the protective cover are installed.

[0012] Furthermore, a tightening block is provided between the wedge-shaped clamping block and the cover plate, and the tightening block and the cover plate are fixedly arranged.

[0013] Furthermore, a rubber pad is fixedly provided on the outer side surface of the wedge-shaped block by means of locking bolts, and the cover plate and the protective cover are fixedly provided by means of fixing bolts.

[0014] Furthermore, a receiving groove is provided at a position on the outer side of the protective cover corresponding to the through hole, the cover plate is located in the receiving groove, and the outer surface of the cover plate overlaps with the outer surface of the protective cover.

[0015] 1. The utility model provides a protective cover and a locking ring. When the impurity composition in the gas to be measured changes, the composition of the impurity remover in the accommodating box can be conveniently replaced to achieve directional impurity removal with remarkable effect. The specific operation is to take the locking ring out of the protective cover, then take out the accommodating box, replace the accommodating box as a whole, or replace the impurity remover in the accommodating box separately, then put the accommodating box into the protective cover, and then clip the locking ring into the first ring groove of the protective cover to achieve fixed installation of the accommodating box.

[0016] 2. The utility model provides a wedge-shaped card block, a cover plate and a tightening block. When the impurity remover needs to be replaced, the fixing bolts can be loosened, the cover plate can be removed, and then the wedge-shaped card block can be pulled out, so that the impurity remover in the accommodating box can flow out from the window of the accommodating box and the through hole of the protective cover. The impurity remover in the accommodating box is completely removed, and new impurity remover is filled into the accommodating box. Then, the wedge-shaped card block is inserted into the window of the accommodating box, and the cover plate is fixed to the protective cover with fixing bolts, and the impurity remover is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 3 This is a schematic diagram of the internal structure of the protective cover of the utility model;

[0020] Figure 4 For the utility model Figure 3 A schematic diagram of the structure at B in FIG.

[0021] Figure 5 It is a schematic diagram of the detector body, sensor module, second soft rubber gasket, breathing device, protective cover, accommodating box, waterproof breathable membrane, first soft rubber gasket, and locking ring in the separated state of the utility model;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the protective cover of the utility model;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the accommodation box of the utility model;

[0024] Figure 8 It is a schematic diagram of the internal three-dimensional structure of the protective cover of the utility model.

[0025] In the figure, 1, detector body; 2, sensor module; 3, mounting seat; 4, receiving box; 5, protective cover; 6, air inlet; 7, impurity remover; 8, locking ring; 9, first ring groove; 10, annular protrusion; 11, waterproof breathable membrane; 12, first soft rubber gasket; 13, second ring groove; 14, breathing device; 15, second soft rubber gasket; 16, window; 17, wedge-shaped block; 18, through hole; 19, cover plate; 20, tightening block; 21, rubber pad; 22, receiving groove. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0027] See also Figure 1-8 The sensor that is easy to disassemble and assemble described in the utility model includes a detector body 1, a mounting seat 3 is fixedly arranged on the lower end surface of the detector body 1, a protective cover 5 with openings at both ends is vertically arranged in the mounting seat 3, a sensor module 2 with an air inlet 6 facing downward is arranged in the protective cover 5 and the mounting seat 3, a receiving box 4 with hollow upper and lower end surfaces is arranged in the protective cover 5 below the sensor module 2, the receiving box 4 is filled with an impurity remover 7, and a locking ring 8 is also arranged below the receiving box 4 in the protective cover 5, and the locking ring 8 is clamped with a first ring groove 9 opened on the inner side wall of the protective cover 5.

[0028] When in use, the container 4 is filled with the impurity remover 7 and then placed in the protective cover 5, and then the locking ring 8 is inserted into the protective cover 5 to prevent the container 4 from sliding down from the protective cover 5, and then the sensor module 2 is placed from the upper opening of the protective cover 5, and then the upper end of the protective cover 5 is inserted into the mounting seat 3, and at the same time the sensor module 2 It is electrically connected to the wire in the detector body 1. When detecting gas, the gas to be tested enters the containing box 4 from the opening at the lower end of the protective cover 5, and then enters the sensor module 2 upward from the air inlet 6 of the sensor module 2. The sensor module 2 detects the gas to be tested and outputs the generated detection signal through the wire; when the gas to be tested passes through the containing box 4, the impurity remover 7 in the containing box 4 uses chemical or physical properties to remove the interfering impurity gas in the gas to be tested, eliminates the interference of the impurity gas on the detector, and improves the test accuracy of the sensor module 2; the containing box 4 in this embodiment is easy to disassemble, and the containing box 4 in the protective cover 5 can be taken out by taking out the locking ring 8, and the containing box 4 can be replaced as a whole or only the impurity remover 7 in the containing box 4 can be replaced, so as to achieve the purpose of replacing different components of the impurity remover 7, and then different components of the impurity remover 7 can be conveniently replaced according to different types of interfering impurity gases. The connection method between the protective cover 5 and the mounting seat 3 can adopt an interference fit plug-in connection or a threaded connection.

[0029] When the impurity remover 7 is replaced by removing the locking ring 8 and taking the accommodating box 4 out of the protective cover 5, the sensor module 2 in the protective cover 5 loses support and there is a risk of loosening. In order to solve this problem, in this embodiment, the lower part of the inner wall of the protective cover 5 is coaxially protruded with an annular protrusion 10, and the annular protrusion 10 divides the interior of the protective cover 5 into an upper cavity and a lower cavity. During installation, the sensor module 2 is placed into the protective cover 5 from the upper end opening of the protective cover 5 and the sensor module 2 is seated on the annular protrusion 10 to support the sensor module 2. The accommodating box 4 is placed into the protective cover 5 from the lower end opening of the protective cover 5 and the upper end face of the accommodating box 4 is in conflict with the lower end face of the annular protrusion 10, and then the locking ring 8 is snapped into the slot of the protective cover 5 to complete the installation.

[0030] In this embodiment, in order to remove the liquid in the gas to be tested, in this embodiment, a waterproof and breathable membrane 11 is pasted on the lower end surface of the accommodating box 4, and a first soft rubber gasket 12 is arranged between the waterproof and breathable membrane 11 and the locking ring 8, and the first soft rubber gasket 12 is inserted into the second ring groove 13 provided on the inner side wall of the protective cover 5; during installation, the waterproof and breathable membrane 11 is pasted on the lower end surface of the accommodating box 4, and then the accommodating box 4 is placed into the protective cover 5 from the lower end opening of the protective cover 5, and then the first soft rubber gasket 12 is inserted into the second ring groove 13, and then the locking ring 8 is inserted into the first ring groove 9, and the locking ring 8 is pressed to release the first soft rubber gasket 12. The first soft rubber gasket 12 is tightened so that the accommodating box 4 can be fixed in the protective cover 5 without falling off. The first soft rubber gasket 12 plays a role of compression and sealing to prevent the gas to be tested from entering from the side, and can also prevent the waterproof breathable membrane 11 from warping and wrinkling during the installation of the locking ring 8. When testing, the gas to be tested enters from the lower end of the protective cover 5, first passes through the filtration of the waterproof breathable membrane 11 to block the entry of liquid, and then passes through the adsorption of the impurity remover 7 to remove the interfering impurity gas in the gas to be tested. Then the pure gas after impurity removal enters the sensor module 2 to complete the detection of gas concentration.

[0031] In this embodiment, a breathing device 14 and a second soft rubber gasket 15 are provided between the sensor module 2 and the annular raised portion 10. During installation, first, the breathing device 14, the second soft rubber gasket 15 and the sensor module 2 are placed into the protective cover 5 from the upper end of the protective cover 5 in sequence, and then the protective cover 5 is inserted into the mounting seat 3, and the second soft rubber gasket 15 has a set compression amount; second, the waterproof and breathable membrane 11 is then pasted on the lower end surface of the accommodating box 4, and then the accommodating box 4 is placed into the protective cover 5 from the lower end opening of the protective cover 5, and then the first soft rubber gasket 12 is inserted into the second annular groove 13, and then the locking ring 8 is inserted into the first annular groove 9, and the first soft rubber gasket 12 is pressed by the locking ring 8, so that the accommodating box 4 can be fixed in the protective cover 5 and does not fall off; the second step can also be installed in advance.

[0032] In the above scheme, when it is necessary to replace the impurity remover 7, the container box 4 needs to be taken out as a whole, which is a troublesome operation. In order to solve this problem, in the present embodiment, a window 16 is provided on the side of the container box 4, a wedge-shaped block 17 is clamped in the window 16 of the container box 4, a through hole 18 is provided at a position corresponding to the window 16 of the container box 4, and a cover plate 19 is detachably connected to the position corresponding to the through hole 18 on the protective cover 5. When the cover plate 19 and the protective cover 5 are installed, the through hole 18 is sealed. Seal; when the impurity remover 7 needs to be replaced, remove the cover plate 19, pull out the wedge-shaped block 17, let the impurity remover 7 in the accommodating box 4 slide out through the window 16 and the through hole 18, then fill the new impurity remover 7 from the window 16 of the accommodating box 4, insert the wedge-shaped block 17 to prevent the impurity remover 7 from leaking, and then install the cover plate 19 on the protective cover 5 to seal the through hole 18; in this embodiment, the impurity remover 7 can also be replaced by taking out the locking ring 8 and removing the accommodating box 4 from the protective cover 5.

[0033] In order to prevent the wedge-shaped block 17 from loosening, in this embodiment, a tightening block 20 is provided between the wedge-shaped block 17 and the cover plate 19, the tightening block 20 and the cover plate 19 are fixedly arranged, and a rubber pad 21 is fixedly arranged on the outer side of the wedge-shaped block 17 by a locking bolt, and the cover plate 19 and the protective cover 5 are fixedly arranged by fixing bolts; during installation, after the accommodating box 4 filled with the impurity remover 7 is placed into the protective cover 5 from the lower end of the protective cover 5, the wedge-shaped block 17 is inserted into the window 16 of the accommodating box 4 through the through hole 18 of the protective cover 5, and then the cover plate 19 is connected to the protective cover 5 by fixing bolts, and at the same time, the tightening block 20 tightens the rubber pad 21 to prevent the wedge-shaped block 17 from loosening during use. During operation, the angle of the protective cover 5 can be rotated so that the accommodating box 4 The window 16 of the accommodating box 4 faces upward to prevent the impurity-removing agent 7 in the accommodating box 4 from leaking out; when replacing the ingredients of the impurity-removing agent 7, loosen the fixing bolt, remove the cover plate 19, and then use a tool to screw the locking bolt so that the locking bolt protrudes outward from the rubber pad 21 and the locking bolt does not separate from the wedge-shaped block 17. At this time, the wedge-shaped block 17 can be pulled out through the cooperation of the tool and the locking bolt, and then the impurity-removing agent 7 in the accommodating box 4 is allowed to slide out through the window 16 and the through hole 18, and then the new impurity-removing agent 7 is filled from the window 16 of the accommodating box 4, the wedge-shaped block 17 is inserted, and then the cover plate 19 is installed on the protective cover 5 to seal the through hole 18; the locking bolt can realize the fixation of the rubber pad 21 and the wedge-shaped block 17, and can also achieve the purpose of facilitating the removal of the wedge block.

[0034] In this embodiment, a receiving groove 22 is opened on the outer side surface of the protective cover 5 at a position corresponding to the through hole 18, and the cover plate 19 is located in the receiving groove 22, and the outer surface of the cover plate 19 coincides with the outer surface of the protective cover 5; after the cover plate 19 and the protective cover 5 are installed by fixing bolts, the outer surface of the cover plate 19 coincides with the outer surface of the protective cover 5, so as to prevent the cover plate 19 from affecting the use function of the protective cover 5.

[0035] The principle of the utility model is as follows: when the detection is performed, the gas to be detected enters from the lower end of the protective cover 5, firstly passes through the filtration of the waterproof breathable membrane 11 to block the entry of liquid, and then passes through the adsorption of the impurity remover 7 in the accommodating box 4 to remove the interfering impurity gas in the gas to be detected, and then the pure gas after impurity removal enters the sensor module 2 through the breathing device 14 to complete the detection of gas concentration; when in use, when the type of interfering impurity gas in the gas to be detected changes, it is necessary to replace the composition of the impurity remover 7, disassemble the cover plate 19, and then screw the locking bolt so that the locking bolt protrudes from the rubber pad 21 to set the length, and then the wedge-shaped clamping block 17 is pulled out by the cooperation of the tool and the locking bolt, and then the impurity remover 7 in the accommodating box 4 can be slid out through the window 16 and the through hole 18 of the protective cover 5, and then the new impurity remover 7 is filled into the accommodating box 4, the wedge-shaped clamping block 17 is inserted into the window 16 of the accommodating box 4, and the cover plate 19 is installed in the accommodating groove 22 of the protective cover 5 by the fixing bolt, so that the impurity remover 7 can be replaced.

Claims

1. A sensor that is easy to assemble and disassemble, characterized in that: The invention comprises a detector body (1), a mounting seat (3) being fixedly arranged on the lower end surface of the detector body (1), a protective cover (5) with openings at both ends being vertically arranged in the mounting seat (3), a sensor module (2) with an air inlet (6) facing downward being arranged in the protective cover (5) and the mounting seat (3), a receiving box (4) with both the upper end surface and the lower end surface being hollowed out being arranged in the protective cover (5) below the sensor module (2), the receiving box (4) being filled with an impurity remover (7), a locking ring (8) being further arranged below the receiving box (4) in the protective cover (5), the locking ring (8) being engaged with a first ring groove (9) provided in the inner side wall of the protective cover (5).

2. The sensor that is easy to assemble and disassemble according to claim 1, characterized in that: An annular protrusion (10) is coaxially protruded from the lower portion of the inner side wall of the protective cover (5), and the annular protrusion (10) divides the interior of the protective cover (5) into an upper chamber and a lower chamber.

3. The sensor that is easy to assemble and disassemble according to claim 2, characterized in that: A waterproof and breathable membrane (11) is adhered to the lower end surface of the accommodating box (4).

4. The sensor that is easy to assemble and disassemble according to claim 3, characterized in that: A first soft rubber gasket (12) is arranged between the waterproof and breathable membrane (11) and the locking ring (8), and the first soft rubber gasket (12) is inserted into a second annular groove (13) provided on the inner side wall of the protective cover (5).

5. The sensor that is easy to assemble and disassemble according to claim 4, characterized in that: A breathing device (14) and a second soft rubber gasket (15) are provided between the sensor module (2) and the annular raised portion (10).

6. The sensor that is easy to assemble and disassemble according to claim 5, characterized in that: A window (16) is provided on the side of the accommodating box (4), a wedge-shaped block (17) is clamped in the window (16) of the accommodating box (4), a through hole (18) is provided at a position of the protective cover (5) corresponding to the window (16) of the accommodating box (4), a cover plate (19) is detachably connected to a position of the protective cover (5) corresponding to the through hole (18), and the through hole (18) is sealed when the cover plate (19) and the protective cover (5) are installed.

7. The sensor that is easy to assemble and disassemble according to claim 6, characterized in that: A tightening block (20) is provided between the wedge-shaped clamping block (17) and the cover plate (19), and the tightening block (20) and the cover plate (19) are fixedly arranged.

8. The sensor that is easy to assemble and disassemble according to claim 7, characterized in that: A rubber pad (21) is fixedly arranged on the outer side surface of the wedge-shaped clamping block (17) via locking bolts, and the cover plate (19) and the protective cover (5) are fixedly arranged via fixing bolts.

9. The sensor that is easy to assemble and disassemble according to claim 8, characterized in that: An accommodating groove (22) is provided at a position on the outer side surface of the protective cover (5) corresponding to the through hole (18); the cover plate (19) is located in the accommodating groove (22), and the outer surface of the cover plate (19) overlaps with the outer surface of the protective cover (5).

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