CN219104848U

CN219104848U - Gas detector

Info

Publication number: CN219104848U
Application number: CN202222524401.XU
Authority: CN
Inventors: 王金龙; 周建; 刘凯
Original assignee: Nanjing Huanju Electronic Technology Co ltd
Current assignee: Nanjing Huanju Electronic Technology Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-05-30
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses a gas detector, which comprises an upper cover and a lower cover, wherein a cavity is formed after the upper cover and the lower cover are connected, and a groove is formed at the upper end of the joint of the upper cover and the lower cover; the air inlet joint is arranged in the groove and communicated with the cavity; the diaphragm pump and the power supply are arranged in the cavity, and the power supply is electrically connected with the diaphragm pump; the air bin is detachably arranged in the cavity, the air inlet end of the diaphragm pump is connected with the air inlet joint, and the air outlet end of the diaphragm pump is connected with the air bin; and the sensor is connected with the sensor PCB. The gas bin of the gas detector is an integral body and is detachably connected with the lower cover through the bolts, so that the gas bin can be replaced at any time when cracks appear in the gas bin and gas leakage occurs in the using process, and the gas detector is convenient to replace; moreover, the air bin is vertically distributed and arranged on one side of the lower cover, and a sufficient distance is reserved between the air bin and the diaphragm pump, so that a hose connected with the diaphragm pump and the air bin cannot be bent, the situation that air inlet and outlet are blocked is avoided, and the use is more convenient.

Description

Gas detector

Technical Field

The utility model belongs to the technical field of gas detection equipment, and particularly relates to a gas detector.

Background

The gas detector is an instrument tool for detecting the concentration of gas leakage, and mainly utilizes a gas sensor to detect the gas types existing in the environment, and is mainly divided into a pumping type and a diffusion type.

Pumping gas detectors are widely accepted in a rapid and efficient detection mode and are the mainstream trend in the market at present. The pumping type gas detector adopts the miniature diaphragm pump to extract and sample the gas in the environment, the sampling speed is higher, and the pumping type gas detector can be matched with a hose to sample and detect some special environments.

In patent 202123366787.8, a pumping type gas detector comprises a face cover, a bottom cover and a gas chamber cover; a plurality of air chambers and a damping cavity are arranged between the air chamber cover and the face cover, an air inlet of the damping cavity is connected with an external air supply device, and the air inlets of the air chambers are communicated with the damping cavity; a sensor is arranged in the surface cover, and a rubber gasket is additionally arranged between the sensor and the air chamber; the air chamber is provided with an exhaust hole for exhausting the detected gas, and a waterproof filtering membrane is additionally arranged between the air chamber cover and the air chamber; the outer sides of the surface cover and the bottom cover also comprise soft adhesive layers, the soft adhesive layers of the bottom cover are provided with bottom cover grooves along the edges of the soft adhesive layers of the bottom cover, and the surface cover is provided with surface cover bosses which are clamped with the bottom cover grooves; the soft adhesive layer of the face cover is provided with a face cover groove corresponding to the air chamber cover, and the air chamber cover is provided with an air chamber cover boss clamped with the face cover groove. According to the technical scheme, the metering stability and accuracy of the gas detector are guaranteed, and the waterproof performance of the gas detector is improved.

But has the following problems:

the air chamber of this detector forms when being connected through air chamber cover and face lid, sets up as an organic whole, and air chamber cover or face lid produce the crack like this when gas chamber, and the air chamber takes place to leak, and it is troublesome to change, and perhaps whole equipment is scrapped, and the air chamber is symmetric distribution along the central point, and the diaphragm pump sets up the back at the air chamber, and such setting just makes the hose that air chamber and diaphragm pump are connected buckle easily, leads to the business turn over gas to be obstructed.

Disclosure of Invention

The present utility model is directed to a gas detector, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a gas detector includes

The upper cover and the lower cover are connected to form a cavity, a main board is arranged in the cavity, and a groove is formed in the upper end of the joint of the upper cover and the lower cover;

the air inlet joint is arranged in the groove and communicated with the cavity;

the diaphragm pump and the power supply are arranged in the cavity, and the power supply is electrically connected with the diaphragm pump;

the air bin is detachably arranged in the cavity, the air inlet end of the diaphragm pump is connected with the air inlet joint, and the air outlet end of the diaphragm pump is connected with the air bin;

and the sensor is arranged on the air bin and is connected with the sensor PCB.

Preferably, a display screen and keys are arranged on the surface of the upper cover, and the display screen and keys are electrically connected with the main board.

In any of the above schemes, preferably, a charging hole is formed in the bottom of the upper cover, the charging hole is connected with a power supply, and a sealing plug is arranged on the charging hole.

In any of the above embodiments, preferably, a clip is provided on the back surface of the lower cover.

In any of the above schemes, preferably, the air inlet connector comprises a connector I and a connector II, the connector I and the connector II are connected through internal threads and external threads, and a baffle is arranged on the side face of the connector I.

In any of the above schemes, preferably, a limiting plate is arranged on the lower cover at the groove, an upward opening groove is arranged on the limiting plate, and the baffle is inserted into the groove.

In any of the above solutions, preferably, a diaphragm pump placing groove is formed on the lower cover through a diaphragm pump baffle, and the diaphragm pump placing groove is provided with an opening.

In any of the above embodiments, it is preferable that the power supply placing groove is formed on the lower cover by a power supply baffle.

In any of the above schemes, preferably, a gasket is arranged at the bottom of the air bin, and a connecting lug is arranged on the side face of the gasket.

Preferably in any of the above schemes, the one end of the air bin is provided with an air inlet, the other end of the air bin is provided with an air outlet, the air inlet is connected with the air outlet end of the diaphragm pump, the air outlet is arranged in a round hole of the lower cover, a plurality of sensor mounting grooves are formed in the air bin, the bottoms of the sensor mounting grooves are provided with ventilation grooves, the diameters of the ventilation grooves are smaller than those of the sensor mounting grooves, sensor gaskets are arranged in the sensor mounting grooves, and ventilation holes are formed in the ventilation grooves, so that air enters from the air inlet and is discharged from the air outlet along each ventilation groove.

The utility model has the technical effects and advantages that: the gas bin of the gas detector is an integral body and is detachably connected with the lower cover through the bolts, so that the gas bin can be replaced at any time when cracks appear in the gas bin and gas leakage occurs in the using process, the replacement is convenient, and the whole equipment is not required to be scrapped; moreover, the air bin is vertically distributed and arranged on one side of the lower cover, and a sufficient distance is reserved between the air bin and the diaphragm pump, so that a hose connected with the diaphragm pump and the air bin cannot be bent, the situation that air inlet and outlet are blocked is avoided, and the use is more convenient.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of another view of the present utility model;

FIG. 3 is a schematic view of the structure of the cavity of the present utility model;

FIG. 4 is a schematic view of the structure of the lower cover of the present utility model connected with the air bin and the air inlet connector;

FIG. 5 is a schematic view of the structure of the lower cover of the present utility model;

FIG. 6 is a schematic view of the structure of the upper cover of the present utility model;

FIG. 7 is a schematic diagram of the structure of the connection of the air warehouse, the sensor and the sensor PCB board of the utility model;

FIG. 8 is a schematic view of the structure of the air chamber of the present utility model;

FIG. 9 is a schematic diagram of the structure of the connection of the air chamber and the sensor of the present utility model;

FIG. 10 is a schematic view of a first embodiment of a joint according to the present utility model;

fig. 11 is a schematic structural view of a second joint according to the present utility model.

In the figure: 1. an upper cover; 11. a charging hole; 12. a display screen; 13. a key; 14. a sealing plug; 2. a lower cover; 21. a limiting plate; 22. a diaphragm pump baffle; 23. an opening; 24. a round hole; 25. a power supply baffle; 26. a groove; 27. a gasket; 3. an air inlet joint; 31. a first joint; 311. an internal thread; 312. a baffle; 32. a second joint; 321. an external thread; 5. a diaphragm pump; 6. a power supply; 7. a gas bin; 71. a sensor mounting groove; 72. an air inlet; 73. a connecting lug; 74. an air outlet; 75. a vent groove; 76. a sensor gasket; 77. a vent hole; 8. a sensor PCB board; 9. a sensor; 10. and a clamping piece.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

The utility model provides a gas detector as shown in fig. 1-6, which is characterized in that: comprising

The side edges of the upper cover 1 and the lower cover 2 are respectively provided with an arc-shaped groove 4, so that the upper cover 1 is convenient to hold, the surface of the upper cover 1 is connected with a display screen 12 and a key 13 through bolts, the display screen 12 and the key 13 are electrically connected with a main board, the bottom of the upper cover 1 is provided with a charging hole 11, the charging hole 11 is connected with a power supply 6, the charging hole 11 is provided with a sealing plug 14, tightness is ensured, water inflow is prevented, the back surface of the lower cover 2 is provided with a clamping piece 10 which is used for clamping between pockets or waists, the carrying is convenient,

a cavity is formed after the upper cover 1 and the lower cover 2 are connected, a main board is arranged in the cavity, the main board is arranged close to the upper cover, and is fixed in the upper cover 1 by bolts, the main board is electrically connected with the sensor PCB 8, the display screen 12 and the keys 13, and a groove 26 is formed at the upper end of the joint of the upper cover 1 and the lower cover 2;

the air inlet connector 3 is arranged in the groove 26 and communicated with the cavity, the air inlet connector 3 comprises a first connector 31 and a second connector 32, air holes are formed in the middle parts of the first connector 31 and the second connector 32, the first connector 31 and the second connector 32 are connected through internal threads 312 and external threads 321, a baffle plate 312 is arranged on the side face of the first connector 31, a limiting plate 21 is arranged on the lower cover 2 and positioned at the groove 26, an upward opening groove is formed in the limiting plate 21, and the baffle plate 312 is inserted into the groove;

the diaphragm pump 5 and the power supply 6 are electrically connected with the diaphragm pump 5, the diaphragm pump placing groove is formed on the lower cover 2 through the diaphragm pump baffle 22, the diaphragm pump placing groove is provided with an opening, the opening is convenient for installing a connecting pipe, and the power supply placing groove is formed on the lower cover 2 through the power supply baffle 25;

the air bin 7 is arranged in the cavity, the gasket 27 is arranged at the bottom of the air bin 7, the connecting lug 73 is arranged on the side face of the gasket 27, the connecting lug 73 is fixed with a connecting column in the lower cover 2 through a bolt, the air inlet end of the diaphragm pump 5 is connected with the air inlet joint 3, one end of the air bin 7 is provided with the air inlet 72, the other end of the air bin 7 is provided with the air outlet 74, the air inlet 72 is connected with the air outlet end of the diaphragm pump 5, the air outlet 74 is arranged in the round hole 24 of the lower cover 2, the air bin 7 is provided with a plurality of vertically distributed sensor mounting grooves 71, the bottom of each sensor mounting groove 71 is provided with a ventilation groove 75, the diameter of each ventilation groove 75 is smaller than that of each sensor mounting groove 71, the sensor mounting groove 71 is provided with a sensor gasket 76, after the sensor 9 is mounted in the sensor mounting groove 71, air can only flow in the ventilation groove 75, and the ventilation groove 75 is provided with a ventilation hole 77, so that the air enters from the air inlet 72 and is discharged from the air outlet 74 along each ventilation groove 75;

the sensor 9 is arranged on the air bin 7 and is connected with the sensor PCB 8.

The lower cover 2 can be provided with a mounting plate, the mounting plate is connected with the lower cover 2 through bolts, and the air bin 7, the diaphragm pump 5 and the power supply 6 are all mounted on the mounting plate.

In the use process of the gas detector, firstly, a sensor 9 is mounted in a sensor mounting groove 71 in a gas bin 7 through bolts, and a sensor PCB 8 is mounted on the top of the sensor 9 so as to be connected with a main board, then gas enters a diaphragm pump 5 from an air inlet joint 3, then enters an air inlet 72 of the gas bin 7 from an air outlet end of the diaphragm pump 5, the gas flows along each ventilation groove 75, the sensor 9 mounted above the ventilation groove 75 detects the gas, and the detected gas is discharged from an air outlet 74.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A gas detector, characterized in that: comprising

The upper cover (1) and the lower cover (2) are connected to form a cavity, and a groove (26) is formed in the upper end of the joint of the upper cover (1) and the lower cover (2);

an air inlet joint (3) which is arranged in the groove (26) and communicated with the cavity;

the diaphragm pump (5) and the power supply (6) are arranged in the cavity, and the power supply (6) is electrically connected with the diaphragm pump (5);

the air bin (7) is detachably arranged in the cavity, the air inlet end of the diaphragm pump (5) is connected with the air inlet joint (3), and the air outlet end of the diaphragm pump is connected with the air bin (7);

the sensor (9) is arranged on the air bin (7) and is connected with the sensor PCB (8).

2. A gas detector according to claim 1, wherein: the cavity is internally provided with a main board, the surface of the upper cover (1) is provided with a display screen (12) and keys (13), and the display screen (12) and the keys (13) are electrically connected with the main board.

3. A gas detector according to claim 1, wherein: the bottom of upper cover (1) is provided with charging hole (11), and charging hole (11) are connected with power (6), be provided with sealing plug (14) on charging hole (11).

4. A gas detector according to claim 1, wherein: the back of the lower cover (2) is provided with a clamping piece (10).

5. A gas detector according to claim 1, wherein: the air inlet connector (3) comprises a first connector (31) and a second connector (32), the first connector (31) and the second connector (32) are connected through an internal thread (311) and an external thread (321), and a baffle plate (312) is arranged on the side face of the first connector (31).

6. A gas detector according to claim 5, wherein: the lower cover (2) is provided with a limiting plate (21) at the groove (26), the limiting plate (21) is provided with a groove with an upward opening, and the baffle plate (312) is inserted into the groove.

7. A gas detector according to claim 1, wherein: a diaphragm pump placing groove is formed in the lower cover (2) through a diaphragm pump baffle plate (22), and an opening (23) is formed in the diaphragm pump placing groove.

8. A gas detector according to claim 1, wherein: the lower cover (2) is provided with a power supply placing groove through a power supply baffle plate (25).

9. A gas detector according to claim 1, wherein: the bottom of the air bin (7) is provided with a gasket (27), and the side surface of the gasket is provided with a connecting lug (73).

10. A gas detector according to claim 1, wherein: one end of the air bin (7) is provided with an air inlet (72), the other end of the air bin is provided with an air outlet (74), the air inlet (72) is connected with the air outlet end of the diaphragm pump (5), the air outlet (74) is arranged in a round hole (24) of the lower cover (2), a plurality of sensor mounting grooves (71) are formed in the air bin (7), ventilation grooves (75) are formed in the bottom of the sensor mounting grooves (71), the diameter of the ventilation grooves (75) is smaller than that of the sensor mounting grooves (71), sensor gaskets (76) are arranged in the sensor mounting grooves (71), and ventilation holes (77) are formed in the ventilation grooves (75) so that air enters from the air inlet (72) and is discharged from the air outlet (74) along each ventilation groove (75).