Steam flushing structure for a three-stage vacuum pump nozzle

Abstract

A steam flushing structure for a three-stage vacuum pump nozzle belongs to the field of chemical and industrial cleaning equipment technology. Through an external piping system integrated on the pump cover, the vacuum pump or nozzle can be switched without disassembling it. Steam is introduced for online cleaning via a three-way valve, greatly improving equipment maintenance efficiency and the stability of continuous production. By controlling the opening and closing states of each three-way valve, multiple operating modes can be flexibly selected to simultaneously steam flush two nozzles, simultaneously supply ethylene glycol to two nozzles, or perform steam or ethylene glycol operation on one nozzle alone, flexibly meeting different needs under complex working conditions.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical and industrial cleaning equipment, specifically relating to a steam rinsing structure for a three-stage vacuum pump nozzle. Background Technology

[0002] In chemical production processes, the three-stage vacuum pump is one of the key pieces of equipment. After prolonged operation, its nozzles are prone to accumulating polymers, coking, or other residues, leading to nozzle blockage, reduced flow rate, and consequently affecting the pump's efficiency and lifespan. Traditional cleaning methods require shutdown and disassembly, a cumbersome process that disrupts production continuity. Furthermore, in cold environments, the liquid medium inside the nozzles may freeze. Currently, there is a lack of an integrated structure that allows for flexible online cleaning and freeze protection without disassembly. Summary of the Invention

[0003] The present invention mainly addresses the technical problems existing in the prior art by providing a steam rinsing structure for a three-stage vacuum pump nozzle.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a steam flushing structure for a three-stage vacuum pump nozzle, including a pump cover, two liquid inlet pipes on the pump cover, which run vertically through the pump cover, and a pipeline assembly between the two liquid inlet pipes outside the pump cover. The pipeline assembly includes an ethylene glycol supply assembly and a steam supply assembly. Each of the two liquid inlet pipes is provided with a diverting three-way valve. The ethylene glycol supply assembly and the steam supply assembly are both connected to the diverting three-way valves on the two liquid inlet pipes.

[0005] Preferably, the ethylene glycol supply assembly includes an ethylene glycol supply pipe, an ethylene glycol three-way valve, and two ethylene glycol diversion pipes. The ethylene glycol supply pipe and the two ethylene glycol diversion pipes are respectively connected to the ethylene glycol three-way valve, and the two ethylene glycol diversion pipes are respectively connected to two diversion three-way valves.

[0006] Preferably, the steam supply assembly includes a steam supply pipe, a steam three-way valve, and two steam diversion pipes. The steam supply pipe and the two steam diversion pipes are respectively connected to the steam three-way valve, and the two steam diversion pipes are respectively connected to two diversion three-way valves.

[0007] Preferably, nozzles are provided at the ends of the two inlet pipes inside the pump cover.

[0008] The beneficial effects of this utility model are as follows: By integrating an external pipeline system on the pump cover, the vacuum pump or nozzle can be switched without disassembling it. Steam can be introduced for online cleaning through the switching of a three-way valve, which greatly improves the efficiency of equipment maintenance and the stability of continuous production.

[0009] By controlling the opening and closing status of each three-way valve, multiple working modes can be flexibly selected to simultaneously steam flush two nozzles, simultaneously supply ethylene glycol to two nozzles, or perform steam or ethylene glycol operation on one nozzle alone, thus flexibly meeting different needs under complex working conditions. 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 structure of the nozzle of this utility model.

[0012] In the diagram: 1. Pump cover; 2. Inlet pipe; 3. Piping assembly; 41. Ethylene glycol supply pipe; 42. Ethylene glycol three-way valve; 43. Ethylene glycol diverter pipe; 51. Steam supply pipe; 52. Steam three-way valve; 53. Steam diverter pipe; 6. Diverter three-way valve; 7. Nozzle. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0014] Example: A steam flushing structure for a three-stage vacuum pump nozzle, such as... Figures 1-2 As shown, the pump includes a pump cover 1, on which two inlet pipes 2 are provided, running vertically through the pump cover 1. A pipeline assembly 3 is provided between the two inlet pipes 2 outside the pump cover 1. The pipeline assembly 3 includes an ethylene glycol supply assembly and a steam supply assembly. Each of the two inlet pipes 2 is provided with a diversion three-way valve 6. The ethylene glycol supply assembly and the steam supply assembly are both connected to the diversion three-way valve 6 on the two inlet pipes 2.

[0015] The ethylene glycol supply assembly includes an ethylene glycol supply pipe 41, an ethylene glycol three-way valve 42, and two ethylene glycol diversion pipes 43. The ethylene glycol supply pipe 41 and the two ethylene glycol diversion pipes 43 are respectively connected to the ethylene glycol three-way valve 42, and the two ethylene glycol diversion pipes 43 are respectively connected to two diversion three-way valves 6.

[0016] The steam supply assembly includes a steam supply pipe 51, a steam three-way valve 52, and two steam diversion pipes 53. The steam supply pipe 51 and the two steam diversion pipes 53 are respectively connected to the steam three-way valve 52, and the two steam diversion pipes 53 are respectively connected to two diversion three-way valves 6.

[0017] The pump cover 1 has nozzles 7 installed at the ends of the two inlet pipes 2.

[0018] The principle of this utility model is as follows: the pump cover 1 is the basic mounting carrier, and the two liquid inlet pipes 2 on it are used to introduce process fluid during normal operation. The diversion three-way valve 6 installed on each liquid inlet pipe 2 is one of the core components for realizing function switching.

[0019] When steam rinsing is required, open the valve on the steam supply pipe 51 and adjust the steam three-way valve 52 and the two diversion three-way valves 6 to the corresponding passages. High-temperature steam enters from the steam supply pipe 51, is distributed to the two steam diversion pipes 53 by the steam three-way valve 52, and then enters the flow channel of the liquid inlet pipe 2 through the diversion three-way valves 6, and finally is ejected at high speed from the nozzle 7 to flush and dissolve the nozzle and related components inside the pump.

[0020] When ethylene glycol needs to be introduced for antifreeze or replacement, the ethylene glycol three-way valve 42 and the diversion three-way valve 6 are operated to allow ethylene glycol to flow in from the ethylene glycol supply pipe 41, pass through the ethylene glycol diversion pipe 43 and enter the liquid inlet pipe 2, thereby starting the system.

[0021] By precisely controlling each three-way valve, it can be ensured that the normal operation of another pipeline is not affected when cleaning or antifreeze operations are performed, or that various working conditions such as single-line maintenance or simultaneous maintenance of two pipelines can be achieved.

[0022] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A steam flushing structure for a three-stage vacuum pump nozzle, comprising a pump cover (1), characterized in that: Two inlet pipes (2) are provided on the pump cover (1) and pass through the pump cover (1) from top to bottom. A pipeline assembly (3) is provided between the two inlet pipes (2) outside the pump cover (1). The pipeline assembly (3) includes an ethylene glycol supply assembly and a steam supply assembly. A diversion three-way valve (6) is provided on each of the two inlet pipes (2). The ethylene glycol supply assembly and the steam supply assembly are connected to the diversion three-way valve (6) on the two inlet pipes (2).

2. The steam flushing structure for a three-stage vacuum pump nozzle according to claim 1, characterized in that: The ethylene glycol supply assembly includes an ethylene glycol supply pipe (41), an ethylene glycol three-way valve (42), and two ethylene glycol diversion pipes (43). The ethylene glycol supply pipe (41) and the two ethylene glycol diversion pipes (43) are respectively connected to the ethylene glycol three-way valve (42), and the two ethylene glycol diversion pipes (43) are respectively connected to two diversion three-way valves (6).

3. The steam flushing structure for a three-stage vacuum pump nozzle according to claim 2, characterized in that: The steam supply assembly includes a steam supply pipe (51), a steam three-way valve (52), and two steam diversion pipes (53). The steam supply pipe (51) and the two steam diversion pipes (53) are respectively connected to the steam three-way valve (52), and the two steam diversion pipes (53) are respectively connected to two diversion three-way valves (6).

4. The steam flushing structure for a three-stage vacuum pump nozzle according to claim 3, characterized in that: The pump cover (1) has nozzles (7) installed at the ends of the two inlet pipes (2).

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