Pumping type gas detection sensor

Abstract

The utility model relates to the technical field of gas detection, and discloses a pump suction type gas detection sensor which comprises a detection cylinder, a sealing cover is detachably installed on the top of the detection cylinder, a base is detachably installed on the lower portion of the detection cylinder, and when the detection cylinder, the sealing cover and the base are closed, a cavity used for detecting gas is formed. A circuit board is installed in the cavity, a sensor used for detecting gas is installed on one side of the circuit board, a gas inlet channel and a gas outlet channel which are used in cooperation with the sensor are further formed in the base, the gas inlet end of the gas inlet channel can be adjusted at will in the granary, and the gas outlet end of the gas outlet channel can be adjusted at will in the granary. Gas at different positions in the granary can be extracted, multidirectional detection in the granary can be realized, and the detection accuracy is improved; the mounting plate is arranged on the sealing cover, the detector can be directly mounted in a control cabinet or a granary through the mounting plate, a worker does not need to support the detector, and convenience is provided for the worker.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a pump-suction type gas detection sensor. Background Art

[0002] Currently, gas detection in granaries is usually carried out in the following two ways: first, a detection channel is set up outside the granary, and staff hold a detection instrument and reach into the granary for monitoring. However, this monitoring method requires the staff to support the detector, which brings inconvenience to the staff; second, a detector is installed inside the granary to monitor the interior of the granary. Since the space of the granary (a standard granary is 60m long and 24m wide) is usually large, the monitoring area of ​​this monitoring method is relatively small, which can easily lead to inaccurate detection values.

[0003] Therefore, we propose a pump-suction gas detection sensor to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a pump-suction gas detection sensor, comprising a detection cylinder, a sealing cover detachably installed on the top of the detection cylinder, a base detachably installed on the lower part of the detection cylinder, and when the detection cylinder, the sealing cover and the base are closed, a chamber for detecting gas is formed, a circuit board is installed inside the chamber, a sensor for detecting gas is installed on one side of the circuit board, and the base is also provided with an air inlet channel and an air outlet channel for use with the sensor.

[0006] Furthermore: a threaded column is fixed on the top of the sealing cover, and a nut is threadedly installed on the threaded column, and an "L"-shaped mounting plate is provided between the nut and the sealing cover and is sleeved on the threaded column.

[0007] Furthermore: a threading hole is provided on the sealing cover for passing through the threaded column, and the power line of the circuit board passes through the threading hole and extends to the outside of the detection cylinder.

[0008] Furthermore: an inwardly recessed mounting groove is provided at the bottom of the detection cylinder, a circular boss is fixed at the center of the base for use with the mounting groove, and the circular boss and the mounting groove are connected by a threaded connection.

[0009] Furthermore: a detection hole is provided on the installation groove for use in conjunction with the air inlet channel and the air outlet channel, and the detection hole is communicated with the interior of the detection cylinder.

[0010] Furthermore: the outer surface of the base is respectively equipped with mounting seats connected to the air inlet channel and the air outlet channel, the mounting seat at one end of the air inlet channel is equipped with an air suction pipe for extracting gas, and the mounting seat at one end of the air outlet channel is connected to the air pump through a connecting pipe.

[0011] Beneficial effects of the utility model:

[0012] The utility model is provided with an air inlet channel and an air outlet channel on the base respectively. The air inlet end of the air inlet pipe can be adjusted at will in the granary, so that the gas at different positions in the granary can be extracted, and the multi-directional detection in the granary can be realized, thereby improving the accuracy of the detection; a mounting plate is provided on the sealing cover, and the device can be directly installed in the control cabinet or the granary through the mounting plate, without the need for staff to support the detector, thereby reducing the workload of the staff and providing convenience for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the exploded cross-section structure of the detection tube, the sealing cover and the base in the utility model.

[0017] The names corresponding to the marks in the figure are:

[0018] 1. Detection tube; 2. Sealing cover; 3. Base; 4. Circuit board; 5. Sensor; 6. Threaded column; 7. Nut; 8. Mounting plate; 9. Threading hole; 10. Mounting slot; 11. Circular boss; 12. Air intake assembly; 13. Detection hole; 14. Mounting base. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0020] A pump-suction gas detection sensor includes a detection tube 1, a sealing cover 2, and a base 3. The sealing cover 2 is threadedly mounted on the upper portion of the detection tube 1. The bottom of the detection tube 1 is recessed inward to form a mounting groove 10. A circular boss 11 is threadedly mounted on the inner surface of the mounting groove 10. The circular boss 11 is fixed to the top of the base 3. When the detection tube 1, sealing cover 2, and base 3 are closed, they form a detection chamber.

[0021] A circuit board 4 is installed inside the chamber, and a sensor 5 is installed on the circuit board 4. The sensor 5 can be a phosphine sensor, a carbon dioxide sensor, a nitrogen sensor or an oxygen sensor. Through the setting of the sensor 5, the gas in the granary can be detected.

[0022] It should be noted that a threaded column 6 is fixed at the center of the sealing cover 2, and an "L"-shaped mounting plate 8 is mounted on the threaded column 6. Through the setting of the mounting plate 8, the sensor can be installed inside the control cabinet or granary, and a nut 7 is also installed on the threaded column 6. Through the setting of the nut 7, the mounting plate 8 is fixed. It should be noted that a rubber gasket is provided between the sealing cover 2 and the mounting plate 8. Through the setting of the rubber gasket, the mounting plate 8 is prevented from causing wear to the sealing cover 2 when tightened.

[0023] A wire hole 9 is provided at the center of the sealing cover 2, and the wire hole 9 passes through the threaded column 6. Through the setting of the wire hole 9, the power line on the circuit board 4 can extend to the outside of the sealing cover 2 and be electrically connected to the controller, thereby ensuring the normal use of the device.

[0024] An air inlet channel 121 and an air outlet channel 122 are provided on the base 3. The tops of the air inlet channel 121 and the air outlet channel 122 pass through the top of the circular boss 11, and the sides of the air inlet channel 121 and the air outlet channel 122 pass through the outer surface of the base 3. A detection hole 13 is provided on the top of the mounting groove 10 for use with the air inlet channel 121 and the air outlet channel 122. Through the setting of the detection hole 13, the gas in the granary can enter the interior of the cavity for detection.

[0025] Two mounting seats 14 are fixed to the outer surface of the base 3. The two mounting seats 14 are respectively connected to the sides of the air inlet channel 121 and the air outlet channel 122. The arrangement of the mounting seats 14 facilitates the installation of the connecting pipe and the air intake pipe.

[0026] When the monitoring tube sensor is installed, it is installed in a control cabinet (not shown in the figure) or inside a granary through an "L"-shaped mounting plate 8. An air suction pipe (not shown in the figure) is installed on the mounting seat 14 at one end of the air inlet channel 121, and one end of the air suction pipe extends to the interior of the granary. The mounting seat 14 at one end of the air outlet channel 122 is connected to an air pump (not shown in the figure) through a connecting pipe (not shown in the figure).

[0027] When detecting the gas in the granary, first turn on the vacuum pump. The vacuum pump can evacuate the inside of the cavity through the outlet pipe 122, and a negative pressure is formed inside the cavity, so that the air inlet pipe 121 can extract the gas in the granary. At the same time, the air inlet end of the air inlet pipe 121 can be adjusted, and the gas can be extracted from different positions in the granary. The extracted gas can enter the inside of the cavity, and the gas in the cavity is monitored by the sensor 5. The sensor can transmit the detection results to the external controller, and the controller transmits the information to the display device (display, mobile phone or tablet) and observes the gas condition in the granary.

Claims

1. A pump-suction gas detection sensor, comprising a detection tube (1), characterized in that: A sealing cover (2) is detachably mounted on the top of the detection cylinder (1), and a base (3) is detachably mounted on the bottom of the detection cylinder (1). When the detection cylinder (1), the sealing cover (2) and the base (3) are closed, a chamber for detecting gas is formed. A circuit board (4) is mounted inside the chamber, and a sensor (5) for detecting gas is mounted on one side of the circuit board (4). An air inlet channel (121) and an air outlet channel (122) for use with the sensor (5) are also provided on the base (3).

2. A pump-suction gas detection sensor according to claim 1, characterized in that: A threaded column (6) is fixed to the top of the sealing cover (2), and a nut (7) is threadedly mounted on the threaded column (6). An "L"-shaped mounting plate (8) mounted on the threaded column (6) is provided between the nut (7) and the sealing cover (2).

3. The pump-suction gas detection sensor according to claim 2, characterized in that: The sealing cover (2) is provided with a threading hole (9) that passes through the threaded column (6), and the power line of the circuit board (4) passes through the threading hole (9) and extends to the outside of the detection cylinder (1).

4. A pump-suction gas detection sensor according to claim 3, characterized in that: The bottom of the detection cylinder (1) is provided with an inwardly recessed mounting groove (10), and a circular boss (11) for use with the mounting groove (10) is fixed at the center of the base (3), and the circular boss (11) and the mounting groove (10) are connected in a threaded manner.

5. The pump-suction gas detection sensor according to claim 4, characterized in that: The mounting groove (10) is provided with a detection hole (13) for use with the air inlet channel (121) and the air outlet channel (122), and the detection hole (13) is communicated with the interior of the detection cylinder (1).

6. The pump-suction type gas detection sensor according to claim 5, characterized in that: Mounting seats (14) communicating with the air inlet channel (121) and the air outlet channel (122) are respectively mounted on the outer surface of the base (3); an air suction pipe for extracting gas is mounted on the mounting seat (14) at one end of the air inlet channel (121); and the mounting seat (14) at one end of the air outlet channel (122) is connected to an air pump via a connecting pipe.

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