CN221685824U - A multi-channel negative pressure pipeline detection device - Google Patents

Abstract

The utility model relates to a multi-path negative pressure pipeline detection device, which comprises: a support frame body; a negative pressure connector; the four-way valve is connected to the air inlet end of the four-way valve through a pipeline; the digital display negative pressure meter is used for detecting the air pressure value in the negative pressure pipeline; the tee joint is connected with the four-way joint; the pneumatic valve is used for opening or cutting off a connecting pipeline of the four-way valve and the three-way valve, an electromagnetic valve is connected to the connecting pipeline of the pneumatic valve and the positive pressure, and the electromagnetic valve is used for opening or cutting off the connecting pipeline of the positive pressure; the digital display flow meter is connected with the outlet end of the tee joint and is used for displaying the flow of the negative pressure pipeline. According to the multi-path negative pressure pipeline detection device, the plurality of negative pressure heads can be connected to the multi-path negative pressure pipeline, and the four-way pipe and the three-way pipe are matched to form a plurality of working units, so that grouped pipelines can be inspected, leakage can be inspected, and plugging can be detected.

Description

A multi-channel negative pressure pipeline detection device

Technical Field

The utility model relates to the technical field of negative pressure detection, in particular to a multi-channel negative pressure pipeline detection device.

Background Art

Pipes are required for connection in many devices. After long-term use, the dust in the air or the medium being transported flows in the pipes for a long time, which can easily cause pipe blockage. In addition, as the use time increases, the service life of the pipes is limited, and leakage often occurs in some parts of the pipes. For long and numerous pipes, it is particularly difficult to detect leakage and blockage.

The commonly used troubleshooting method is to set a plug at the pipeline opening to block the opening of one end of the connecting component, and connect the pipeline opening on the other side of the connector to the vacuum equipment through the connecting pipeline, and the connecting pipeline is equipped with a pressure gauge and a stop valve. During the inspection, the vacuum equipment is used to evacuate the inside of the connecting component, and then the stop valve is closed to observe whether the pressure value in the connecting component changes.

This negative pressure seal test using vacuum pumping requires the pipe opening on one side of the connector to be sealed. Once the seal is unreliable, it will directly affect the test results, easily causing test failure, and the applicable environment is also very limited. In addition, this vacuum pumping test method also requires a dedicated vacuum pumping device and negative pressure gauge, which greatly increases the test cost, especially when the air volume is large and the vacuum degree is required to be high.

Utility Model Content

Therefore, the technical problem to be solved by the present invention is to overcome the problem that the leakage and blockage problems of the negative pressure pipeline system in the prior art are difficult to detect and require high costs.

In order to solve the above technical problems, the utility model provides a multi-channel negative pressure pipeline detection device, comprising: a support frame; a negative pressure connector, which is arranged in a plurality and is installed on the outer surface of the support frame; a four-way valve, which is installed inside the support frame, and the negative pressure connector is connected to the air inlet end of the four-way valve through a pipeline; a digital negative pressure gauge, which is connected to the air outlet end of the four-way valve, and the digital negative pressure gauge is used to detect the air pressure value in the negative pressure pipeline; a three-way valve, which is installed inside the support frame, and the four-way valve is connected to the three-way valve; a pneumatic valve, which is arranged between the connecting pipelines of the four-way valve and the three-way valve, and the pneumatic valve is used to open or cut off the connecting pipeline of the four-way valve and the three-way valve, and an electromagnetic valve is connected to the pneumatic valve and the positive pressure connecting pipeline, and the electromagnetic valve is used to open or cut off the positive pressure connecting pipeline; a digital flow meter, which is connected to the outlet end of the three-way valve, and the digital flow meter is used to display the flow of the negative pressure pipeline.

In one embodiment of the utility model, the support frame includes a lower bottom plate, four side plates and an upper top plate, and the lower bottom plate, four side plates and the upper top plate form a rectangular box structure.

In one embodiment of the utility model, the upper top plate is provided with a plurality of through holes 1 arranged in a rectangular array, a negative pressure head mounting plate is provided on the through holes 1 in the same row, through hole 2 is provided on the negative pressure head mounting plate, through hole 1 and through hole 2 are arranged opposite to each other, the negative pressure connector is mounted on the negative pressure head mounting plate, and the pipe connection end of the negative pressure head mounting plate passes through through hole 1 and through hole 2.

In one embodiment of the utility model, a negative pressure air hole is provided on the negative pressure connecting head, and the negative pressure air hole is connected to the negative pressure pipeline through a pipe.

In one embodiment of the present invention, the digital negative pressure gauge and the digital flow meter are both installed on the outer surface of the support frame.

In one embodiment of the present invention, the number of the negative pressure connectors is 24, the number of the cross-ways is 8, and the inlet end of each of the cross-ways is connected to three negative pressure connectors.

In one embodiment of the present invention, the number of the tees is four, and the outlet ends of two of the four-way tees are connected to the two inlet ends of the tees.

In one embodiment of the present invention, the number of the digital flow meter is one, and the outlet ends of the four tees are connected to the digital flow meter.

In one embodiment of the utility model, when the pneumatic valve and the solenoid valve are closed, the digital negative pressure gauge is used to detect leakage of the negative pressure pipeline.

In one embodiment of the utility model, when the pneumatic valve and the solenoid valve are opened, the digital flow meter is used to detect whether the negative pressure pipeline is blocked.

The above technical solution of the utility model has the following advantages compared with the prior art:

The multi-channel negative pressure pipeline detection device described in the utility model can be connected to the multi-channel negative pressure pipelines through the provision of a plurality of negative pressure heads, and a plurality of working units are formed by cooperating with the provision of a four-way and a three-way, so that the grouped pipelines can be checked, and both the leakage inspection and the blockage inspection can be carried out; after the pipeline is pumped with negative pressure, the pressure is maintained for a certain period of time, and the leakage rate is kept within the set value range, which is indicated by the digital negative pressure gauge of the equipment, indicating that there is no leakage; when the pipeline is pumped with negative pressure, the displayed value of the digital flow meter is compared with the set flow value to determine whether the pipeline is blocked.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

FIG1 is a schematic diagram of a multi-channel negative pressure pipeline detection device of the present invention;

FIG2 is an overall assembly diagram of the multi-channel negative pressure pipeline detection device of the present invention;

FIG3 is a partial structural schematic diagram of a multi-channel negative pressure pipeline detection device of the present invention;

FIG4 is a second partial structural diagram of the multi-channel negative pressure pipeline detection device of the utility model;

FIG. 5 is a schematic structural diagram of an upper top plate of the present invention.

Explanation of the reference numerals in the drawings in the specification: support frame 1, lower base plate 11, four side plates 12, upper top plate 13, through hole 131, negative pressure head mounting plate 132, through hole 2 133, negative pressure connector 2, negative pressure air hole 21, four-way valve 3, digital negative pressure gauge 4, three-way valve 5, pneumatic valve 6, solenoid valve 7, digital flow meter 8.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

1-4, the multi-channel negative pressure pipeline detection device of the utility model comprises: a support frame 1, a negative pressure connector 2, a cross-connection 3, a digital negative pressure gauge 4, a three-way connection 5, a pneumatic valve 6, a solenoid valve 7 and a digital flow meter 8; the negative pressure connector 2 is provided in a plurality, and the negative pressure connector 2 is installed on the outer surface of the support frame 1, and the plurality of negative pressure connectors 2 are preferably arranged in a rectangular array, and the negative pressure connectors 2 are respectively connected to the negative pressure pipeline; the cross-connection 3 is installed inside the support frame 1, and the negative pressure connector 2 is connected to the air inlet end of the cross-connection 3 through a pipeline; the digital negative pressure gauge 4 is connected to the air outlet end of the cross-connection 3 The support frame 1 is provided with a three-way valve 5, and the three-way valve 3 is connected to the three-way valve 5; the pneumatic valve 6 is installed inside the support frame 1, and the pneumatic valve 6 is arranged between the connecting pipes of the four-way valve 3 and the three-way valve 5, and the pneumatic valve 6 is used to open or cut off the connecting pipe between the four-way valve 3 and the three-way valve 5. The pneumatic valve 6 and the positive pressure connecting pipe are connected with an electromagnetic valve 7, and the electromagnetic valve 7 is used to open or cut off the positive pressure connecting pipe; a digital flow meter 8 is connected to the outlet end of the three-way valve 5, and the digital flow meter 8 is used to display the flow of the negative pressure pipeline.

Specifically, when the pneumatic valve 6 and the solenoid valve 7 are closed, the digital negative pressure meter 4 is used to detect leakage of the negative pressure pipeline. When the pneumatic valve 6 and the solenoid valve 7 are opened, the digital flow meter 8 is used to detect whether the negative pressure pipeline is blocked.

As shown in FIG. 2 , the support frame 1 includes a lower bottom plate 11 , four side plates 12 and an upper top plate 13 , and the lower bottom plate 11 , the four side plates 12 and the upper top plate 13 form a rectangular box structure.

As shown in FIG3 , the upper top plate 13 is provided with a plurality of through holes 131 arranged in a rectangular array, and a negative pressure head mounting plate 132 is provided on the through holes 131 in the same row, and a through hole 2 133 is provided on the negative pressure head mounting plate 132, and the through holes 131 and the through holes 133 are arranged opposite to each other, and the negative pressure connector 2 is installed on the negative pressure head mounting plate 132, and the pipe connection end of the negative pressure head mounting plate 132 passes through the through holes 131 and the through holes 2 133. The negative pressure connector 2 is provided with a negative pressure air hole 21, and the negative pressure air hole 21 is connected to the negative pressure pipeline through a pipe.

In order to facilitate viewing of the values of the digital negative pressure gauge 4 and the digital flow meter 8 , the digital negative pressure gauge 4 and the digital flow meter 8 are both installed on the outer surface of the support frame 1 .

Specifically, the corresponding relationship between the negative pressure connector 2, the cross 3, the tee 5 and the digital flow meter 8 is that the number of the negative pressure connectors 2 is 24, the number of the cross 3 is 8, and the inlet end of each of the cross 3 is connected to three negative pressure connectors 2. The number of the tee 5 is four, and the outlet ends of two of the cross 3 are connected to the two inlet ends of the tee 5. The number of the digital flow meter 8 is 1, and the outlet ends of four of the tees 5 are connected to the digital flow meter 8.

When the multi-channel negative pressure pipeline detection device of the utility model is used:

1. Connect the detection device to the power supply. After the equipment is powered on, the display screens of the digital negative pressure meter 4 and the digital flow meter 8 light up.

2. When the pneumatic valve 6 and the solenoid valve 7 are all closed, it is equivalent to blocking one end of the four-way 3, and the gas is extracted from the negative pressure pipeline to form a negative pressure. The leak detection function is realized through the value change of the digital negative pressure gauge 4.

3. Positive pressure opens the solenoid valve 7, thereby opening the pneumatic valve 6. The negative pressure pipeline will definitely draw gas, and the flow rate of the digital flow meter 8 is compared with the set value to realize the blockage detection function.

Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims (10)

1. A multi-channel negative pressure pipeline detection device, characterized in that it includes: Support frame; A plurality of negative pressure connectors are provided and installed on the outer surface of the support frame; A cross-piece, which is installed inside the support frame, and the negative pressure connector is connected to the air inlet end of the cross-piece through a pipeline; A digital negative pressure gauge is connected to the air outlet of the cross-way and is used to detect the air pressure value in the negative pressure pipeline; A tee, which is installed inside the support frame, and the cross is connected to the tee; A pneumatic valve is arranged between the connecting pipes of the four-way and the three-way, and is used to open or cut off the connecting pipes of the four-way and the three-way. A solenoid valve is connected to the pneumatic valve and the positive pressure connecting pipe, and is used to open or cut off the positive pressure connecting pipe; A digital flow meter is connected to the outlet end of the tee, and is used to display the flow of the negative pressure pipeline. 2. The multi-channel negative pressure pipeline detection device according to claim 1 is characterized in that: the support frame includes a lower base plate, four side plates and an upper top plate, and the lower base plate, four side plates and the upper top plate form a rectangular box structure. 3. The multi-channel negative pressure pipeline detection device according to claim 2 is characterized in that: the upper top plate is provided with a plurality of through holes 1 arranged in a rectangular array, a negative pressure head mounting plate is provided on the through holes 1 in the same row, and the negative pressure head mounting plate is provided with through hole 2, the through hole 1 and the through hole 2 are arranged opposite to each other, the negative pressure connector is mounted on the negative pressure head mounting plate, and the pipe connection end of the negative pressure head mounting plate passes through through hole 1 and through hole 2. 4. The multi-channel negative pressure pipeline detection device according to claim 1 is characterized in that: a negative pressure air hole is provided on the negative pressure connecting head, and the negative pressure air hole is connected to the negative pressure pipeline through a pipeline. 5. The multi-channel negative pressure pipeline detection device according to claim 1 is characterized in that the digital negative pressure gauge and the digital flow meter are both installed on the outer surface of the support frame. 6. The multi-channel negative pressure pipeline detection device according to claim 1 is characterized in that: the number of the negative pressure connectors is 24, the number of the four-way connectors is 8, and the inlet end of each of the four-way connectors is connected to 3 negative pressure connectors. 7. The multi-channel negative pressure pipeline detection device according to claim 6 is characterized in that: the number of the tees is four, and the outlet ends of two of the four-way pipes are connected to the two inlet ends of the tee. 8. The multi-channel negative pressure pipeline detection device according to claim 7 is characterized in that: the number of the digital flow meter is 1, and the outlet ends of the four tees are connected to the digital flow meter. 9. The multi-channel negative pressure pipeline detection device according to claim 1 is characterized in that when the pneumatic valve and the solenoid valve are closed, the digital negative pressure gauge is used to detect leakage of the negative pressure pipeline. 10. The multi-channel negative pressure pipeline detection device according to claim 1, characterized in that when the pneumatic valve and the solenoid valve are opened, the digital flow meter is used to detect whether the negative pressure pipeline is blocked.