Novel efficient vacuum pump unit

Abstract

The utility model provides a novel efficient vacuum pump unit which comprises a solvent removal kettle, a condenser, a pressure container, a controller, a first vacuum pump, a second vacuum pump and water circulation vacuum pumps, the controller drives a plurality of water circulation vacuum pumps to start and operate at the same time, and controls the first vacuum pump and the second vacuum pump to stop operating. Driving a plurality of water circulation vacuum pumps to stop running in sequence within a preset starting time period, driving a first vacuum pump to run after all the water circulation vacuum pumps stop running, and driving a second vacuum pump to run after the first vacuum pump runs for a first time period, therefore, in the initial stage of organic solvent removal, the multiple water circulation vacuum pumps operate at the same time to ensure high-flow quick discharge, the multiple water circulation vacuum pumps are stopped in sequence within the preset starting time period to cooperate with reduction of output flow in the process of organic solvent gradual removal, then the flow is reduced after the organic solvent is reduced, and the removal efficiency of the organic solvent is improved. The first vacuum pump and the second vacuum pump are controlled to operate after the first time period so as to drive the first vacuum pump and the second vacuum pump to start and operate, so that the high negative pressure performance of the vacuum pump unit is ensured, an organic solvent is completely removed, and the purposes of high efficiency and energy conservation are achieved; sequential output at the front end and the rear end of the pressure container is achieved, and the working stability of a unit is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical refrigerators, in particular to a novel high-efficiency vacuum pump unit. Background Art

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. It can be used in many fields, such as in the semiconductor, chemical, pharmaceutical, food and other industries to extract gas and create a vacuum environment.

[0003] A vacuum pump unit is a device composed of multiple components used to create a vacuum environment. Its main components include: (1) Vacuum pump: It is the core component for generating vacuum. According to different principles and working methods, it can be divided into rotary vane pump, centrifugal pump, liquid ring pump, adsorption pump, grid ion pump, etc. (2) Vacuum gauge: It is used to measure and monitor the vacuum degree inside the vacuum pump unit. Common ones include hot cathode ionization vacuum gauge, thermal conductivity vacuum gauge, cold cathode ionization vacuum gauge, etc. (3) Gas cooler / cooling water system: For some vacuum pumps that need to be cooled, a gas cooler or cooling water system will be equipped to keep the temperature of the pump stable. (4) Valves and pipes: It is used to control the flow of gas and adjust the pressure inside the vacuum system, including isolation valves, regulating valves, stop valves, etc. (5) Vacuum pump control system: It includes electronic control system, automatic control device, alarm system, etc., which is used to monitor and control the operating status of the vacuum pump unit.

[0004] The existing vacuum pump is a more traditional water circulation vacuum pump, which has the advantages of low price, low energy consumption and large flow rate. The disadvantage is low ultimate vacuum degree. The more advanced vacuum pump on the market is the Roots screw vacuum pump, which has the advantages of high ultimate vacuum degree, but high price, high energy consumption and low flow rate.

[0005] For the existing production process, when there is a lot of organic solvent in the material, high vacuum is not required, but high flow is required. When the organic solvent content in the material is low, the flow will become very small by itself. At this time, high vacuum is required to remove the small amount of residual organic solvent. Utility Model Content

[0006] In view of this, the technical problem to be solved by the utility model is: how to provide a new type of high-efficiency vacuum pump unit to improve the material conveying efficiency of the vacuum pump unit when the organic solvent content is high.

[0007] To achieve the above-mentioned purpose, the utility model proposes a novel high-efficiency vacuum pump unit, which includes a solvent removal kettle, a condenser, a pressure-resistant container, a controller, a first vacuum pump, a second vacuum pump and a water circulation vacuum pump;

[0008] The output end of the solvent removal kettle is connected to the condenser through a pipeline, the pressure-resistant container includes a first port and a second port, and the output end of the condenser is connected to the first port through a pipeline;

[0009] The first vacuum pump is connected to the first port through a pipeline, the second port is connected to the second vacuum pump and the water circulation vacuum pump respectively, and a plurality of the water circulation vacuum pumps are arranged side by side and are respectively connected to the second port;

[0010] The controller is connected to the first vacuum pump, the second vacuum pump and the water circulation vacuum pump. The controller is configured to drive the multiple water circulation vacuum pumps to start running at the same time, and control the first vacuum pump and the second vacuum pump to stop running, drive the multiple water circulation vacuum pumps to stop running in sequence within a preset startup time period, drive the first vacuum pump to run after all the water circulation vacuum pumps stop running, and drive the second vacuum pump to run after the first vacuum pump runs for a first time period.

[0011] Furthermore, the first time period and the startup preset time period are both stored in a memory within the controller.

[0012] Furthermore, the first vacuum pump is a Roots screw vacuum pump, and the second vacuum pump is a high-pressure vacuum pump.

[0013] Furthermore, the material is transported outward through the solvent removal kettle, the condenser, the pressure-resistant container, the second vacuum pump or the water circulation vacuum pump in sequence.

[0014] Furthermore, the duration of the start preset time period is greater than the duration of the first time period.

[0015] Compared with the related art, the utility model proposes a new type of high-efficiency vacuum pump unit, which has the beneficial effect of: driving multiple water circulation vacuum pumps to start and run at the same time through a controller, and controlling the first vacuum pump and the second vacuum pump to stop running, driving multiple water circulation vacuum pumps to stop running in sequence within a preset startup time period, driving the first vacuum pump to run after all water circulation vacuum pumps stop running, and driving the second vacuum pump to run after the first vacuum pump runs for a first time period, thereby ensuring high flow rate and fast output by running multiple water circulation vacuum pumps at the same time in the initial stage of organic solvent removal, stopping multiple water circulation vacuum pumps in sequence within a preset startup time period to cooperate with the reduction of output flow rate during the gradual removal of organic solvent, and then reducing the flow rate after the organic solvent is reduced to drive the first vacuum pump and the second vacuum pump to start running, ensuring the high negative pressure performance of the vacuum pump unit, thereby removing the organic solvent cleanly and achieving the purpose of high efficiency and energy saving, and controlling the second vacuum pump to run after the first time period can ensure the output stability at the output rear end of the pressure-resistant container, realize the sequential output at the front end and the rear end of the pressure-resistant container, and ensure the working stability of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a new type of high-efficiency vacuum pump unit in an embodiment of the utility model;

[0017] Figure 2 Schematic diagram of the system of the controller in the embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] See also Figure 1 As shown in FIG. 2 , the utility model proposes a novel high-efficiency vacuum pump unit, which includes a solvent removal kettle 11, a condenser 12, a pressure-resistant container 13, a controller 14, a first vacuum pump 21, a second vacuum pump 22 and a water circulation vacuum pump 23.

[0020] The output end of the solvent removal kettle 11 is connected to the condenser 12 through a pipeline. The pressure-resistant container 13 includes a first port 131 and a second port 132 . The output end of the condenser 12 is connected to the first port 131 through a pipeline.

[0021] The first vacuum pump 21 is connected to the first port 131 through a pipeline, and the second port 132 is connected to the second vacuum pump 22 and the water circulation vacuum pump 23 respectively. The first vacuum pump 21 is a Roots screw vacuum pump, and the second vacuum pump 22 is a high-pressure vacuum pump. A plurality of water circulation vacuum pumps 23 are arranged side by side and are respectively connected to the second port 132. The material is transported outward in sequence through the solvent removal kettle 11, the condenser 12, the pressure-resistant container 13, the second vacuum pump 22 or the water circulation vacuum pump 23.

[0022] The controller 14 is connected to the first vacuum pump 21, the second vacuum pump 22 and the water circulation vacuum pump 23. The controller 14 is configured to drive the multiple water circulation vacuum pumps 23 to start and run at the same time, and control the first vacuum pump 21 and the second vacuum pump 22 to stop running, and drive the multiple water circulation vacuum pumps 23 to stop running in sequence within a preset startup time period. In this way, in the initial stage of organic solvent removal, the multiple water circulation vacuum pumps 23 can be operated simultaneously to ensure high flow rate and speed. The multiple water circulation vacuum pumps 23 are stopped in sequence within the preset startup time period to cooperate with the reduction of the output flow rate during the gradual removal of the organic solvent, thereby achieving energy saving.

[0023] After all the water circulation vacuum pumps 23 stop running, the first vacuum pump 21 is driven to run, and after the first vacuum pump 21 runs for a first time period, the second vacuum pump 22 is driven to run. The first time period and the start preset time period are both stored in the memory of the controller 14, and the duration of the start preset time period is longer than the duration of the first time period.

[0024] As the flow rate decreases after the organic solvent is reduced, all water circulation vacuum pumps 23 are stopped, and the controller 14 drives the first vacuum pump 21 and the second vacuum pump 22 to start running, ensuring the high negative pressure performance of the vacuum pump unit, thereby removing the organic solvent cleanly to achieve the purpose of high efficiency and energy saving. Controlling the second vacuum pump 22 to operate after the first time period can ensure the output stability at the output rear end of the pressure-resistant container 13, realize the sequential output at the front and rear ends of the pressure-resistant container 13, and ensure the working stability of the unit.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A new type of high-efficiency vacuum pump unit, characterized in that: It includes a solvent removal kettle, a condenser, a pressure-resistant container, a controller, a first vacuum pump, a second vacuum pump and a water circulation vacuum pump; The output end of the solvent removal kettle is connected to the condenser through a pipeline, the pressure-resistant container includes a first port and a second port, and the output end of the condenser is connected to the first port through a pipeline; The first vacuum pump is connected to the first port through a pipeline, the second port is connected to the second vacuum pump and the water circulation vacuum pump respectively, and a plurality of the water circulation vacuum pumps are arranged side by side and are respectively connected to the second port; The controller is connected to the first vacuum pump, the second vacuum pump and the water circulation vacuum pump. The controller is configured to drive the multiple water circulation vacuum pumps to start running at the same time, and control the first vacuum pump and the second vacuum pump to stop running, drive the multiple water circulation vacuum pumps to stop running in sequence within a preset startup time period, drive the first vacuum pump to run after all the water circulation vacuum pumps stop running, and drive the second vacuum pump to run after the first vacuum pump runs for a first time period.

2. The novel high-efficiency vacuum pump unit according to claim 1, characterized in that: The first time period and the start preset time period are both stored in a memory in the controller.

3. The novel high-efficiency vacuum pump unit according to claim 1 is characterized in that: The first vacuum pump is a Roots screw vacuum pump, and the second vacuum pump is a high-pressure vacuum pump.

4. The novel high-efficiency vacuum pump unit according to claim 1, characterized in that: The material is transported outwards in sequence through the solvent removal kettle, the condenser, the pressure-resistant container, the second vacuum pump or the water circulation vacuum pump.

5. The novel high-efficiency vacuum pump unit according to claim 1 is characterized in that: The duration of the start preset time period is greater than the duration of the first time period.

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