Metering pump mechanism based on liquid pumping three-way pipe

Abstract

The utility model provides a metering pump mechanism based on a liquid extraction three-way pipe, which comprises a metering pump main body, a liquid extraction pipe assembly is arranged between a liquid inlet end and a liquid outlet end of the metering pump main body, the liquid extraction pipe assembly comprises a liquid extraction three-way pipe and a liquid extraction pump, and the upper end and the lower end of the liquid extraction three-way pipe are respectively provided with a three-way connecting pipe. A branch valve is installed between the liquid extraction three-way pipe and the three-way connecting pipe, and the end, not connected with the three-way connecting pipe, of the liquid extraction three-way pipe is connected with a liquid inlet end pipeline of the liquid extraction pump. Due to the arrangement of the liquid extraction three-way pipe, the branch valve, the three-way connecting pipe and the liquid extraction pump, liquid in a pipeline connected with the metering pump can be extracted, and then the metering pump can be detached and maintained.

Description

Technical Field

[0001] This utility model belongs to the field of metering pump technology, and in particular relates to a metering pump mechanism based on a liquid-drawing three-way pipe. Background Technology

[0002] Metering pumps are widely used in coal mining, especially in coal slurry metering vehicles. A metering pump is a special positive displacement pump that can maintain a constant flow rate regardless of the discharge pressure. Existing metering pumps usually include a hydraulic mechanism and a transmission mechanism. When using such a metering pump, the inlet and outlet of the metering pump need to be installed in the pipeline. However, when the metering pump is disassembled for inspection and maintenance, the liquid in the pipeline connected to the metering pump is easy to flow out with the removal of the metering pump, causing inconvenience for maintenance. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a metering pump mechanism based on a liquid extraction three-way pipe, which can extract the liquid in the pipeline connected to the metering pump and then disassemble and maintain the metering pump.

[0004] This utility model is achieved through the following technical solution:

[0005] A metering pump mechanism based on a liquid-drawing tee pipe includes a metering pump body, a liquid-drawing pipe assembly installed between the inlet and outlet ends of the metering pump body, the liquid-drawing pipe assembly including a liquid-drawing tee pipe and a liquid-drawing pump, a tee connecting pipe installed at both the upper and lower ends of the liquid-drawing tee pipe, and a branch valve installed between the liquid-drawing tee pipe and the tee connecting pipe, and the end of the liquid-drawing tee pipe not connected to the tee connecting pipe connected to the inlet pipe of the liquid-drawing pump.

[0006] Preferably, the lower part of the metering pump body is integrally provided with a base.

[0007] Preferably, the lower part of the base is provided with a mounting plate.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the liquid extraction tee, branch valve, tee connecting pipe and liquid extraction pump are provided to facilitate the extraction of liquid from the pipeline connected to the metering pump and then disassembly and maintenance of the metering pump.

[0009] In this invention, the mounting plate, damper, and mounting ear plate are designed to effectively reduce vibration. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the liquid extraction tube assembly of this utility model.

[0012] In the picture:

[0013] 1. Metering pump body; 2. Base; 3. Mounting plate; 4. Damper; 5. Mounting lug; 6. Liquid extraction pipe assembly; 61. Liquid extraction tee pipe; 62. Branch valve; 63. Tee connecting pipe; 64. Liquid extraction pump. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings. As shown in Figure 1, a metering pump mechanism based on a liquid extraction three-way pipe includes a metering pump body 1, a base 2 integrally provided at the lower part of the metering pump body 1, a mounting plate 3 provided at the lower part of the base 2, and dampers 4 installed at the four corners between the base 2 and the mounting plate 3. Mounting ear plates 5 are integrally provided at the four corners of the mounting plate 3, and a liquid extraction pipe assembly 6 is installed between the liquid inlet end and the liquid outlet end of the metering pump body 1.

[0015] In this implementation plan, in conjunction with the appendix Figure 2 As shown, the liquid extraction pipe assembly 6 includes a liquid extraction tee pipe 61 and a liquid extraction pump 64. Both ends of the liquid extraction tee pipe 61 are equipped with tee connecting pipes 63, and a branch valve 62 is installed between the liquid extraction tee pipe 61 and the tee connecting pipe 63. The end of the liquid extraction tee pipe 61 that is not connected to the tee connecting pipe 63 is connected to the liquid inlet pipe of the liquid extraction pump 64. When the metering pump body 1 is removed from the external liquid delivery pipeline for maintenance, the branch valve 62 is opened, and the liquid extraction pump 64 is connected to an external power supply. The liquid extraction pump 64 extracts the liquid from the external pipeline connected to the metering pump body 1 to an external water storage device through the tee connecting pipe 63, the branch valve 62, and the liquid extraction tee pipe 61, thus preventing water from overflowing from the pipeline when the liquid extraction pump 64 is disassembled.

[0016] In this embodiment, specifically, the two three-way connecting pipes 63 are respectively fixedly installed at the inlet end and the outlet end of the metering pump body 1.

[0017] In this utility model, the external liquid delivery pipeline and the metering pump body 1 are connected by two upper and lower three-way connecting pipes 63. When the branch valve 62 is closed, the external liquid is connected between the external liquid delivery pipeline through the lower three-way connecting pipe 63, the metering pump body 1 and the upper three-way connecting pipe 63. The damper 4 plays a role in shock absorption.

[0018] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A metering pump mechanism based on a liquid-drawing three-way pipe, characterized in that, The metering pump mechanism based on the liquid extraction tee includes a metering pump body (1), a liquid extraction pipe assembly (6) is installed between the inlet and outlet ends of the metering pump body (1), the liquid extraction pipe assembly (6) includes a liquid extraction tee (61) and a liquid extraction pump (64), a tee connecting pipe (63) is installed at both the upper and lower ends of the liquid extraction tee (61), and a branch valve (62) is installed between the liquid extraction tee (61) and the tee connecting pipe (63), and one end of the liquid extraction tee (61) that is not connected to the tee connecting pipe (63) is connected to the inlet pipe of the liquid extraction pump (64).

2. The metering pump mechanism based on a liquid-drawing three-way pipe as described in claim 1, characterized in that, The lower part of the metering pump body (1) is integrally provided with a base (2).

3. The metering pump mechanism based on a liquid-drawing three-way pipe as described in claim 2, characterized in that, The base (2) is provided with a mounting plate (3) at its lower part.

4. The metering pump mechanism based on a liquid-drawing three-way pipe as described in claim 2, characterized in that, Dampers (4) are installed at the four corners between the base (2) and the mounting plate (3).

5. The metering pump mechanism based on a liquid-drawing three-way pipe as described in claim 3, characterized in that, The mounting plate (3) is provided with mounting ear plates (5) at its four corners.

6. The metering pump mechanism based on a liquid-drawing three-way pipe as described in claim 1, characterized in that, The two three-way connecting pipes (63) are respectively fixedly installed at the inlet and outlet ends of the metering pump body (1).

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