CN219035070U

CN219035070U - Parasitic pump for gas detector

Info

Publication number: CN219035070U
Application number: CN202223567719.2U
Authority: CN
Inventors: 陈金炼; 陆熊
Original assignee: Indsci Sensing Instr Shanghai Co ltd
Current assignee: Indsci Sensing Instr Shanghai Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-16
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of gas detection, in particular to a parasitic pump for a gas detector, which comprises the following components: a front cover and a rear cover fixed on the front cover rear elevation; the rear elevation of the front cover is provided with an installation cavity and a wiring cavity, the top surface of the front cover is provided with an air inlet, and the air inlet is communicated with the wiring cavity; a pump body is arranged in the mounting cavity, an inlet of the pump body is communicated with the air inlet through a pipeline, and an outlet of the pump body penetrates through the bottom wall of the wiring cavity through the pipeline and extends to the rear elevation of the cover plate; the pressure switch is installed to the back facade of back lid, the positive negative pole of one set of normally open switch of pressure switch passes through the wire connection and connects the positive negative pole of the pump body, another set of normally open switch passes through the wire connection the wiring shell fragment, and pressure switch's import passes through the pipe connection the air inlet of the pump body. The parasitic pump can reduce the manufacturing cost of the gas detector, and the gas detector can be separated from the parasitic pump for independent operation, so that the parasitic pump is convenient to use.

Description

Parasitic pump for gas detector

Technical Field

The utility model relates to the technical field of gas detection, in particular to a parasitic pump for a gas detector.

Background

The gas detector is an instrument for detecting gas leakage concentration, and comprises: portable gas detector, hand-held gas detector, stationary gas detector, on-line gas detector, etc. Gas sensors are mainly used for detecting the gas species present in the environment, and are sensors for detecting the composition and content of the gas.

At present, the existing gas detector is generally provided with a pump body for collecting gas with a far distance in order to enlarge the collection range of the gas, the power supply of the pump body is provided by positive and negative wiring terminals led out by a storage battery of the detector, the equipment is high in manufacturing cost, and the detector and the pump body are of an integrated structure, so that the gas detector cannot be detached for independent use. In view of this, we propose a parasitic pump for a gas detector.

Disclosure of Invention

The present utility model aims to provide a parasitic pump for a gas detector, which solves the problems set forth in the background art.

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

a parasitic pump for a gas detector, comprising: a front cover and a rear cover fixed on the front cover rear elevation; the front vertical face of the front cover downwards extends out of the cover plate, two groups of fixing holes are formed in the cover plate, wiring spring plates are arranged in the fixing holes, and the fixing holes are fixedly connected with an external gas detector through fixing bolts; the rear elevation of the front cover is provided with an installation cavity and a wiring cavity, the top surface of the front cover is provided with an air inlet, and the air inlet is communicated with the wiring cavity; a pump body is arranged in the mounting cavity, an inlet of the pump body is communicated with the air inlet through a pipeline, and an outlet of the pump body penetrates through the bottom wall of the wiring cavity through the pipeline and extends to the rear elevation of the cover plate; the pressure switch is installed to the back facade of back lid, the positive negative pole of one set of normally open switch of pressure switch passes through the wire connection and connects the positive negative pole of pump body, another set of normally open switch passes through the wire connection the wiring shell fragment, just pressure switch's import passes through the pipe connection the air inlet of pump body.

Preferably, the air inlet is screwed with an air inlet cover through threads.

Preferably, a filter ring is further arranged in the air inlet, and a water filtering and air permeable membrane is adhered in the filter ring.

Preferably, the upper end and the lower end of the filter ring are fixed in a sealing way through rubber rings.

Preferably, four corners of the rear cover are fixed on the rear vertical surface of the front cover through bolts, and a sealing gasket is arranged between the front cover and the rear cover.

Preferably, the inlet of the pump body is provided with a three-way pipe, a first pipe orifice of the three-way pipe is communicated with the inlet of the pump body, a second pipe orifice is connected with an air inlet connector screwed on the air inlet through a pipeline, and a third pipe orifice is connected with the inlet of the pressure switch through a pipeline.

Compared with the prior art, the utility model has the beneficial effects that: this a parasitic pump for gas detector, the collection to the gas that awaits measuring is accomplished through the pressure switch intercommunication pipeline connection pump body circulation operation that sets up, improves the convenience and the operability of equipment of gas collection, reduces the cost of gas detector, can select whether to use this parasitic pump according to actual demand, and gas detector can separate independent operation with the parasitic pump, convenient to use.

Drawings

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

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

FIG. 3 is a schematic view of the rear cover of the present utility model;

FIG. 4 is a schematic diagram of piping wiring of the pump body of the present utility model;

fig. 5 is a schematic circuit wiring diagram of the pump body of the present utility model.

In the figure:

1. a front cover; 11. a mounting cavity; 12. a wiring cavity; 13. an air inlet; 131. an air inlet cover; 132. a filter ring; 133. a water-filtering and air-permeable membrane; 134. a rubber ring; 14. a cover plate; 141. a fixing hole; 142. a wiring spring plate; 143. a fixing bolt;

2. a rear cover; 21. a pressure switch; 22. a bolt; 23. sealing gasket

3. A pump body; 31. a three-way pipe; 32. an air inlet interface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

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", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and "third" 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", "a second", or a third "may explicitly or implicitly include one or more such feature.

Referring to fig. 1-5, the present utility model provides a technical solution:

a parasitic pump for a gas detector, comprising: a front cover 1 and a rear cover 2 fixed on the rear elevation of the front cover 1; the front vertical surface of the front cover 1 extends downwards to form a cover plate 14, two groups of fixing holes 141 are formed in the cover plate 14, and wiring spring plate 142 fixing holes 141 are formed in the fixing holes 141 and are connected and fixed with an external gas detector through fixing bolts 143; the rear elevation of the front cover 1 is provided with a mounting cavity 11 and a wiring cavity 12, the top surface of the front cover 1 is provided with an air inlet 13, and the air inlet 13 is communicated with the wiring cavity 12; the pump body 3 is arranged in the installation cavity 11, an inlet of the pump body 3 is communicated with the air inlet 13 through a pipeline, and an outlet of the pump body 3 penetrates through the bottom wall of the wiring cavity 12 through the pipeline and extends to the rear vertical surface of the cover plate 14; the pressure switch 21 is installed to the back facade of back lid 2, and the positive negative pole of the pump body 3 is connected through the wire connection in pressure switch 21 of a set of normally open switch, and the wiring shell fragment 142 is connected through the wire to another set of normally open switch, and the air inlet of the pump body 3 is connected through the pipeline in pressure switch 21's import. In this embodiment, in order to cooperate the use of this parasitic pump, the connecting hole that corresponds with fixed orifices 141 has been seted up on the surface of gas detector, and be provided with in this connecting hole with wiring shell fragment 142 matched with sheetmetal form the power supply end that supplies power for the parasitic pump, therefore, during the use, only need put the apron 14 of parasitic pump at gas detector inlet detection end, and fix it on gas detector through fixing bolt 143, make pressure switch 21 utilize the gas detector to carry out the power supply end that supplies power for the parasitic pump and open pump body 3, normally open switch makes pump body 3 operation when the circular telegram, the gas to be tested lets in through air inlet 13, and let out the inlet detection end of direction gas detector by its export, and because the gas outlet still communicates the import of pressure switch 21, when there is the circulation of atmosphere, pressure switch 21 will normally open the switch disconnection, pump body 3 stops the operation, accomplish the primary gas collection of parasitic pump, the air current can make normally open switch open again after gradually, so that reciprocates, make pump body 3 circulation operation, accomplish the gas to be tested, whether the gas detector reduces the gas detector need be separated according to the air detector, can be used alone according to the demand of the parasitic pump, and the convenient operation is convenient for the easy to use, and easy to use.

It should be noted that the air inlet 13 is screwed with the air inlet cover 131. The air inlet cover 131 can seal the opening of the air inlet 13 when in idle, so that the air inlet 13 is prevented from being polluted.

Specifically, the air inlet 13 is further provided with a filter ring 132, and a water filtering and air permeable membrane 133 is adhered to the filter ring 132. The water filtering ventilation film 133 is installed on the filtering ring 132 to filter the water vapor in the gas to be detected, so that the gas detector is prevented from being damaged by the absorbed water vapor.

In addition, the upper and lower ends of the filter ring 132 are sealed and fixed by rubber rings 134 provided. The upper and lower rubber rings 134 can ensure the tightness of the inlet air, so that the inlet air can completely enter the gas detector through the water filtering and ventilation membrane 133.

Further, four corners of the rear cover 2 are fixed to the rear vertical surface of the front cover 1 by bolts 22, and a gasket 23 is provided between the front cover 1 and the rear cover 2. The sealing property between the front cover 1 and the rear cover 2 can be improved through the arranged sealing gasket 23, and the dustproof and waterproof effect is achieved.

Specifically, the inlet of the pump body 3 is provided with a three-way pipe 31, a first pipe orifice of the three-way pipe 31 is communicated with the inlet of the pump body 3, a second pipe orifice is connected with an air inlet interface 32 screwed on the air inlet 13 through a pipeline, and a third pipe orifice is connected with the inlet of the pressure switch 21 through a pipeline. The three-way pipe 31 is convenient for the inlet of the pump body 3 to simultaneously divide the inlet of the two pipelines to connect the inlet 13 and the inlet of the pressure switch 21, so that the pipeline design of the parasitic pump is optimized.

When the parasitic pump for the gas detector is used, in order to cooperate with the parasitic pump, the connecting hole corresponding to the fixing hole 141 is formed in the surface of the gas detector, and the metal sheet matched with the wiring elastic sheet 142 is arranged in the connecting hole to form a power supply end for supplying power to the parasitic pump, therefore, when the parasitic pump is used, only the cover plate 14 of the parasitic pump needs to be arranged at the air inlet detection end of the gas detector and is fixed on the gas detector through the fixing bolt 143, the pressure switch 21 starts the pump body 3 by utilizing the power supply end of the gas detector for supplying power to the parasitic pump, the normally open switch enables the pump body 3 to operate when the power is supplied, the gas to be detected is introduced through the air inlet 13, and is introduced into the air inlet detection end of the gas detector through the outlet of the gas detector, and because the air outlet is also communicated with the inlet of the pressure switch 21, the normally open switch 21 is disconnected, the pump body 3 stops working, the gas collection of the parasitic pump is completed, the normally open switch can be started again after the gas collection is gradually reduced, the gas collection is carried out again, the pump body 3 circulation operation is reciprocally carried out, the gas detection is completed, the gas detector is independently carried out, the cost is reduced, the gas detection device can be independently, the parasitic pump can be conveniently used, and the device can be conveniently used, and can be conveniently and conveniently assembled, and conveniently and can be conveniently used according to the requirements of the operation.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A parasitic pump for a gas detector, comprising: a front cover (1) and a rear cover (2) fixed on the rear elevation of the front cover (1);

the front vertical face of the front cover (1) downwards extends out of the cover plate (14), two groups of fixing holes (141) are formed in the cover plate (14), wiring spring plates (142) are arranged in the fixing holes (141), and the fixing holes (141) are connected and fixed with an external gas detector through fixing bolts (143);

the front cover (1) is provided with a mounting cavity (11) and a wiring cavity (12) on the rear vertical face, the top surface of the front cover (1) is provided with an air inlet (13), and the air inlet (13) is communicated with the wiring cavity (12);

the mounting cavity (11) is internally provided with a pump body (3), an inlet of the pump body (3) is communicated with the air inlet (13) through a pipeline, and an outlet of the pump body (3) penetrates through the bottom wall of the wiring cavity (12) through the pipeline and extends to the rear vertical surface of the cover plate (14);

the pressure switch (21) is installed to the back facade of back lid (2), the positive negative pole of one of them group of normally open switch of pressure switch (21) is passed through the wire and is connected the positive negative pole of pump body (3), and another group of normally open switch passes through the wire and is connected wiring shell fragment (142), just the import of pressure switch (21) is passed through the pipe connection the air inlet of pump body (3).

2. The parasitic pump for a gas detector of claim 1, wherein: the air inlet (13) is screwed with an air inlet cover (131) through threads.

3. The parasitic pump for a gas detector of claim 1, wherein: a filter ring (132) is further arranged in the air inlet (13), and a water filtering and air permeable membrane (133) is adhered to the filter ring (132).

4. A parasitic pump for a gas detector according to claim 3, wherein: the upper end and the lower end of the filter ring (132) are fixed in a sealing way through rubber rings (134) arranged on the filter ring.

5. The parasitic pump for a gas detector of claim 1, wherein: four corners of the rear cover (2) are fixed on the rear vertical surface of the front cover (1) through bolts (22), and a sealing gasket (23) is arranged between the front cover (1) and the rear cover (2).

6. The parasitic pump for a gas detector of claim 1, wherein: the inlet of the pump body (3) is provided with a three-way pipe (31), a first pipe orifice of the three-way pipe (31) is communicated with the inlet of the pump body (3), a second pipe orifice is connected with an air inlet interface (32) screwed on the air inlet (13) through a pipeline, and a third pipe orifice is connected with the inlet of the pressure switch (21) through a pipeline.