Device for detecting inner leakage of monoblock pump

Abstract

The utility model belongs to the technical field of monoblock pumps, and particularly relates to a monoblock pump inner leakage detection device which comprises a detection box, a monoblock pump body, an air compression tank, an air pressure sensor and an air pressure display screen, a support is arranged on the left side of the detection box, and a monoblock pump limiting frame is arranged in an inner cavity of the detection box. A monoblock pump limiting frame is arranged on the support, a limiting screw is arranged on the monoblock pump limiting frame, a top cover is arranged on the top of the detection box, a monoblock pump body is arranged on the monoblock pump limiting frame and comprises an oil inlet nozzle and an oil return nozzle, a sealing plug is arranged on the oil return nozzle, and an air compression tank is installed in the support and connected with an air conveying pipe. According to the device, the leakage condition of the monoblock pump can be visually observed, and meanwhile, the device is of an integrated structure, small in occupied space, convenient to carry and transport and convenient to move to different positions for use.

Description

Technical Field

[0001] The utility model relates to the technical field of monomer pumps, in particular to a detection device for internal leakage of a monomer pump. Background Art

[0002] If there is fuel low-pressure pipeline intake in the diesel engine fuel supply system, possible leakage points include the fuel pump inlet pipeline, the single pump and related gaskets and other parts. If the diesel fuel internal leakage fault is confirmed, it can be locked as an internal leakage of the single pump. The single pump plunger pair in the single pump is one of the most important precision parts of the diesel engine. It is composed of a plunger and a plunger sleeve. It is a precision matching part with a matching clearance of only 0.0015-0.0025mm. It is selected and ground after fine processing. If the clearance is too small, the plunger is easy to get stuck, and if the clearance is too large, it is easy to cause diesel leakage. The plunger clearance is an important performance indicator of the single pump.

[0003] The existing detection device for internal leakage of the monomer pump cannot visually observe the leakage of the monomer pump. At the same time, the existing detection device for internal leakage of the monomer pump has a complex structure, occupies a large space, is inconvenient to carry and transport, and is not convenient to move to different locations for use. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above and / or existing problems in the existing diesel engine fault detection, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a detection device for internal leakage of a monomer pump, which can visually observe the leakage of the monomer pump. At the same time, the device is an integrated structure, occupies a small space, is easy to carry and transport, and is easy to move to different locations for use.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A detection device for internal leakage of a monomer pump comprises: a detection box, a monomer pump body, an air compression tank, an air pressure sensor and an air pressure display screen, wherein a bracket is arranged on the left side of the detection box, a monomer pump limit frame is arranged in the inner cavity of the detection box, and a limit screw is arranged on the monomer pump limit frame, a top cover is arranged on the top of the detection box, and a monomer pump body is arranged on the monomer pump limit frame, the monomer pump body comprises an oil inlet nozzle and an oil return nozzle, and a sealing plug is arranged on the oil return nozzle, an air compression tank is installed in the bracket, the air compression tank is connected to an air supply pipe, and an air supply valve is arranged on the air supply pipe, an air pressure sensor is arranged on the right side wall of the inner cavity of the detection box, an air pressure display screen is arranged on the right side wall of the detection box, and the air pressure sensor and the air pressure display screen are electrically connected.

[0009] As a preferred solution of the detection device for internal leakage of a monomer pump described in the utility model, support pads are arranged on both the left and right sides of the bottom of the detection box.

[0010] As a preferred solution of the detection device for internal leakage of a monomer pump described in the utility model, sealing gaskets are arranged at the gaps of the detection box.

[0011] As a preferred solution of the device for detecting internal leakage of a monomer pump described in the utility model, wherein: the oil inlet nozzle is connected to the air delivery pipe.

[0012] As a preferred solution of the device for detecting inner leakage of a monomer pump described in the utility model, the detection box adopts a transparent box body.

[0013] Compared with the prior art: the single pump body is installed on the single pump limit frame, the circulation of the air supply pipe is controlled by the air supply valve, and the compressed gas in the air compression tank is input into the single pump body. When the single pump body leaks, the air pressure in the sealed detection box changes, and the air pressure change is detected by the air pressure sensor. The air pressure value is observed through the air pressure display screen, and the leakage of the single pump can be observed intuitively. At the same time, the device is an integrated structure, which occupies a small space, is convenient to carry and transport, and is easy to move to different locations for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0015] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 2It is a schematic diagram of the external structure of the utility model.

[0017] In the figure: 100 detection box, 110 bracket, 120 single pump limit frame, 121 limit screw, 130 top cover, 140 support pad, 200 single pump body, 210 oil inlet nozzle, 220 oil return nozzle, 230 sealing plug, 300 air compression tank, 310 air pipe, 320 air supply valve, 400 air pressure sensor, 500 air pressure display screen DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0020] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0021] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] The utility model provides a detection device for the internal leakage of a monomer pump, which can visually observe the leakage of the monomer pump. At the same time, the device is an integrated structure, occupies a small space, is easy to carry and transport, and is easy to move to different locations for use. Please refer to Figure 1 and Figure 2 , including: a detection box 100, a monomer pump body 200, an air compression tank 300, an air pressure sensor 400 and an air pressure display screen 500;

[0023] Please refer again Figure 1 and Figure 2The detection box 100 includes a bracket 110, a monomer pump limiting frame 120 and a limiting screw 121. Specifically, the bracket 110 is welded to the left side wall of the detection box 100, and the monomer pump limiting frame 120 is welded to the inner cavity of the detection box 100. The monomer pump limiting frame 120 has a monomer pump slot in the center, and limiting screws 121 are installed on both sides of the slot. After the monomer pump body 200 is installed on the monomer pump limiting frame 120, the monomer pump body 200 is fixed by the limiting screws 121.

[0024] Please refer again Figure 1 The monomer pump body 200 includes an oil inlet nozzle 210, an oil return nozzle 220 and a sealing plug 230. Specifically, the monomer pump body 200 is installed on the monomer pump limit frame 120. The oil inlet nozzle 210 of the monomer pump body 200 is connected to the air pipe 310. The sealing plug 230 is installed on the oil return nozzle 220. The oil return nozzle 220 is sealed by the sealing plug 230. The sealing plug 230 is a rubber plug, which is inserted into the oil return nozzle 220 to block the oil return nozzle 220 for sealing. Then, it is tightened by a steel wire to prevent it from falling off under pressure, thereby improving the sealing effect and ensuring that the monomer pump body 200 is in a closed state during testing. The fuel injection nozzle of the monomer pump body 200 is sealed to ensure that only the oil inlet nozzle 210 on the monomer pump body 200 is connected to the air pipe 310, and the other positions are closed for easy sealing testing.

[0025] Please refer again Figure 1 and Figure 2 The air compression tank 300 includes an air delivery pipe 310 and an air supply valve 320. Specifically, the air compression tank 300 is installed in the bracket 110. The top of the air compression tank 300 is connected to the air delivery pipe 310. The air delivery pipe 310 is connected to the oil inlet nozzle 210. The air supply valve 320 is installed on the air delivery pipe 310. The air supply valve 320 controls the circulation of the air delivery pipe 310.

[0026] Among them, since the density of gas is smaller than that of liquid, gas is more likely to leak than oil, so it is more effective to detect the sealing. The air compression tank 300 is filled with colored gas, and the detection box 100 adopts a transparent box. When a leak occurs, the colored gas leaks into the detection box 100. The color change in the detection box 100 is observed through the transparent detection box 100 to determine whether a leak occurs.

[0027] Please refer again Figure 1 The air pressure sensor 400 is installed in the inner cavity of the detection box 100. The air pressure in the inner cavity of the detection box 100 is detected by the air pressure sensor 400. When the monomer pump body 200 leaks, the air pressure in the sealed inner cavity of the detection box 100 changes, and the air pressure change is detected by the air pressure sensor 400.

[0028] Please refer again Figure 1 and Figure 2The air pressure display screen 500 is installed on the right side wall of the detection box 100. The air pressure display screen 500 is electrically connected to the air pressure sensor 400, and the air pressure value is observed through the air pressure display screen 500.

[0029] During specific use, the monomer pump body 200 is installed on the monomer pump limit frame 120, and the circulation of the air supply pipe 310 is controlled by the air supply valve 320 to input the compressed gas in the air compression tank 300 into the monomer pump body 200. When the monomer pump body 200 leaks, the air pressure in the inner cavity of the sealed detection box 100 changes, and the air pressure change is detected by the air pressure sensor 400. The air pressure value is observed through the air pressure display screen 500. The air compression tank 300 is filled with colored gas. When a leak occurs, the colored gas leaks into the detection box 100, and whether a leak occurs is determined by observing the color change in the detection box 100.

[0030] Support pads 140 are provided on both left and right sides of the bottom of the detection box 100 to improve placement stability.

[0031] Sealing pads are provided at the gaps of the detection box 100 to improve the sealing performance and prevent air leakage from affecting the detection results.

[0032] The oil inlet nozzle 210 is connected to the air delivery pipe 310 , and the monomer pump body 200 is ventilated through the air compression tank 300 to detect the sealing performance of the monomer pump body 200 .

[0033] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A detection device for internal leakage of a monomer pump, characterized in that: include: A detection box (100), a monomer pump body (200), an air compression tank (300), an air pressure sensor (400) and an air pressure display screen (500); a bracket (110) is arranged on the left side of the detection box (100); a monomer pump limiting frame (120) is arranged in the inner cavity of the detection box (100); a limiting screw (121) is arranged on the monomer pump limiting frame (120); a top cover (130) is arranged on the top of the detection box (100); a monomer pump body (200) is arranged on the monomer pump limiting frame (120); and the monomer pump body (200) includes The bracket (110) includes an oil inlet nozzle (210) and an oil return nozzle (220), the oil return nozzle (220) is provided with a sealing plug (230), an air compression tank (300) is installed in the bracket (110), the air compression tank (300) is connected to an air supply pipe (310), and an air supply valve (320) is provided on the air supply pipe (310), an air pressure sensor (400) is provided on the right side wall of the inner cavity of the detection box (100), and an air pressure display screen (500) is provided on the right side wall of the detection box (100), and the air pressure sensor (400) and the air pressure display screen (500) are electrically connected.

2. A detection device for internal leakage of a monomer pump according to claim 1, characterized in that: Support pads (140) are provided on both left and right sides of the bottom of the detection box (100).

3. The device for detecting inner leakage of a monomer pump according to claim 1, characterized in that: Sealing pads are provided at the gaps of the detection box (100).

4. The device for detecting inner leakage of a monomer pump according to claim 1, characterized in that: The oil inlet nozzle (210) is connected to the air delivery pipe (310).

5. The device for detecting inner leakage of a monomer pump according to claim 1, characterized in that: The detection box (100) adopts a transparent box body.

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