Vacuum pump tail gas water discharging structure

Abstract

The utility model discloses a vacuum pump tail gas water discharge structure which comprises a transmission pipe, a vacuum pump, a waste liquid receiving tank, a buffer tank, a water discharge pipeline, a hose and a valve, the buffer tank is connected with the vacuum pump through a transmission pipe, drainage pipelines are connected between the vacuum pump and the waste liquid receiving tank and at the bottom of the buffer tank, the drainage pipeline at the bottom of the buffer tank is provided with a valve, and the waste liquid receiving tank is connected with the drainage pipeline at the bottom of the buffer tank through the valve and a hose; compared with the prior art, when the vacuum pump runs, the valve of the drainage pipeline is opened slightly, water and stains are automatically sucked into the buffer tank and the waste liquid receiving tank under the action of negative pressure, the pipeline is not easy to block, manual drainage is not needed, whether the drainage pipeline is smooth or not can be observed through the hose, and the safety of the vacuum pump is ensured. The emission efficiency of tail gas water is improved, and the equipment failure rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump tail gas treatment, and particularly relates to a water discharge structure for vacuum pump tail gas. Background Technique

[0002] During the operation of the vacuum pump, the inhaled gas contains a large amount of water vapor. This water vapor will condense into water when cooled in the pump cavity, exhaust port or pipeline of the pump. Moreover, the gas inhaled by the vacuum pump may be mixed with viscous materials, blocking the tail gas water drainage pipeline of the vacuum pump, resulting in water accumulation in the pump cavity. Also, due to the incompressible volume property of water, it affects the normal operation of the vacuum pump, causing damage to the piston rod, crankshaft, and sealing ring, having a series of negative impacts on the performance and service life of the vacuum pump, and indirectly affecting production efficiency and production costs. Effective measures must be taken to deal with the problem of water accumulation in the vacuum pump.

[0003] In the existing technical solutions for vacuum pump tail gas water discharge, mainly by installing a waste liquid receiving tank on the left side of the pump, the tail gas water of the pump automatically flows into the waste liquid receiving tank, and the water in the waste liquid receiving tank is discharged regularly. It is easy to occur that the drainage pipeline is blocked by viscous materials and cannot be discovered in time, or the waste liquid receiving tank is full of water and not discharged in time, resulting in the problem of water accumulation in the pump cavity. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a water discharge structure for vacuum pump tail gas. When the vacuum pump is running, open the drainage pipeline valve slightly. Under the action of negative pressure, water and stains are automatically sucked into the buffer tank and the waste liquid receiving tank. The pipeline is not easy to be blocked and does not require manual drainage operation. It can also be observed whether the drainage pipeline is unobstructed through a hose, improving the tail gas water discharge efficiency and reducing the equipment failure rate.

[0005] The utility model is realized through the following technical solutions:

[0006] A water discharge structure for vacuum pump tail gas includes a vacuum pump and also includes a waste liquid receiving tank. The vacuum pump and the waste liquid receiving tank are connected through a drainage pipeline. The suction port of the vacuum pump is connected with a buffer tank through a transmission pipe. The bottom of the buffer tank is fixedly connected with a drainage pipeline, and the waste liquid receiving tank is connected with the drainage pipeline connected to the bottom of the buffer tank through a hose.

[0007] Further, the vacuum pump is a double-acting reciprocating pump. A pair of suction valves and exhaust valves are respectively arranged on the upper and lower sides of the piston of the vacuum pump. The pump cavities where the suction valves and exhaust valves are located are respectively communicated with the suction port and the exhaust port.

[0008] Further, the drainage pipeline includes a first drainage pipeline and a second drainage pipeline.

[0009] Further, one end of the first drainage pipeline is connected to the side of the waste liquid receiving tank, and the other end is respectively connected to the transfer pipe connected to the exhaust port and the pump chamber where the exhaust valve is located below.

[0010] Further, the second drainage pipeline is fixedly connected to the bottom of the buffer tank, and valves are arranged at the bottom end of the second drainage pipeline and the part communicating with the waste liquid receiving tank.

[0011] Further, a valve is fixedly connected to the bottom of the waste liquid receiving tank. One end of the hose is connected to the bottom end of this valve, and the other end is connected above the part of the second drainage pipeline where the valve is provided.

[0012] Further, the hose is made of a transparent material.

[0013] Further, the valve is a ball valve.

[0014] Compared with the prior art, the utility model has the following obvious advantages:

[0015] 1. Since the valve of the drainage pipeline of the utility model is opened slightly, when the vacuum pump is operating, water and stains are automatically pressed into the waste liquid receiving tank under the pressure generated in the pump chamber, and flow into the drainage pipeline connected to the bottom of the buffer tank along the hose, without manual drainage operation, improving the tail gas water discharge efficiency.

[0016] 2. Since when dealing with tail gas discharge, the residual tail gas first passes through the buffer tank, part of the water vapor, stains and viscous materials in the tail gas are first condensed or deposited in the buffer tank and discharged through the drainage pipeline fixedly connected to the bottom of the buffer tank, reducing the working pressure of the vacuum pump and the risk of blockage of the drainage pipeline and water accumulation in the vacuum pump.

[0017] 3. Since the flow state of accumulated water and stains in it can be observed through the hose, thereby judging whether the drainage pipeline is unobstructed, the operator can timely discover whether the drainage pipeline is blocked by viscous materials and clean it in time, preventing the vacuum pump from being damaged due to water accumulation in the pump chamber, affecting the performance and service life of the vacuum pump, and improving the working efficiency of the vacuum pump. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Among them, the relationship between the reference numerals and the corresponding names is as follows:

[0020] 1. Vacuum pump, 101. Piston, 102. Suction port, 103. Exhaust port, 104. Suction valve, 105. Exhaust valve, 2. Waste liquid receiving tank, 3. Buffer tank, 4. Transfer pipe, 5. First drainage pipeline, 6. Second drainage pipeline, 7. Hose, 8. Valve. Specific Embodiments

[0021] The following provides a detailed introduction to the present utility model in conjunction with the attached drawings.

[0022] As Figure 1 shown, the present utility model provides a structure for discharging water from the tail gas of a vacuum pump, which includes a transfer pipe 4, a vacuum pump 1, a waste liquid receiving tank 2, a buffer tank 3, a first drainage pipeline 5, a second drainage pipeline 6, a hose 7, and a valve 8. In this embodiment, the vacuum pump 1 is a double-acting reciprocating pump. A pair of suction valves 104 and exhaust valves 105 are respectively arranged on the upper and lower sides of the piston 101 of the vacuum pump 1. The pump chambers where the suction valves 104 and exhaust valves 105 are located are respectively connected to the suction port 102 and the exhaust port 103. The waste liquid receiving tank 2 is connected to the vacuum pump 1 through the first drainage pipeline 5. One end of the first drainage pipeline 5 is connected to the side of the waste liquid receiving tank 2, and the other end is respectively connected to the transfer pipe 4 connected to the exhaust port 103 and the pump chamber where the lower exhaust valve 105 is located. The valve 8 is a ball valve, and the valve 8 is fixedly connected to the bottom of the waste liquid receiving tank 2. The bottom end of the valve 8 is connected to the second drainage pipeline 6 through the hose 7, and the hose 7 is made of a transparent material. Two transfer pipes 4 are connected to the top of the buffer tank 3. One is connected to the reaction kettle, and the other is connected to the suction port 102 of the vacuum pump 1. The second drainage pipeline 6 is fixedly connected to the bottom of the buffer tank 3, and valves 8 are provided at the bottom end of the second drainage pipeline 6 and the part connected to the waste liquid receiving tank 2.

[0023] When the present utility model is in use, tail gas is generated during the preparation of products in the reaction kettle. The operator slightly opens the valve 8 connecting the second drainage pipeline 6 and the waste liquid receiving tank 2, and the vacuum pump 1 operates to extract the tail gas. The residual tail gas after a series of treatments is inhaled into the buffer tank 3 through the transfer pipe 4. Part of the water vapor, stains, and viscous materials in the tail gas condense or deposit in the buffer tank 3 and are discharged through the second drainage pipeline 6 fixedly connected to the bottom of the buffer tank 3. The remaining tail gas is inhaled into the suction port 102 of the vacuum pump 1 through the transfer pipe 4.

[0024] During the process of inhaling and discharging the tail gas in the pump chamber, the water vapor in the tail gas cools and condenses into water in the pump chamber of the vacuum pump 1, the exhaust port 103, or the transfer pipe 4. The water condensed in the pump chamber flows into the pump chamber where the exhaust valve 105 at the lower part of the piston 101 is located. During the movement of the piston 101, the space in the pump chamber is squeezed, and the accumulated water and stains are automatically pressed into the first drainage pipeline 5 connected to this pump chamber under the action of pressure. The water condensed in the exhaust port 103 and the transfer pipe 4 will flow into the first drainage pipeline 5 connected to the transfer pipe 4 during the exhaust process. After the accumulated water and stains flow from the first drainage pipeline 5 into the waste liquid receiving tank 2, under the pressure generated by the movement of the piston 101, they continue to be pressed into the valve 8 connected to the bottom of the waste liquid receiving tank 2 and flow along the hose 7 connected to the bottom end of the valve 8 into the second drainage pipeline 6 fixedly connected to the bottom of the buffer tank 3 for discharge.

[0025] The accumulated water and stains can be observed through the hose 7 to see their flow states therein. Whether the first drainage pipeline 5 and the second drainage pipeline 6 are unblocked can be judged by the flow states of the accumulated water and stains. If the accumulated water and stains in the hose 7 do not flow smoothly, it indicates that the first drainage pipeline 5 or the second drainage pipeline 6 is blocked by viscous materials. The operator stops production and shuts down the vacuum pump 1, clears the blocked viscous materials in the drainage pipeline, and after cleaning, resets and runs again.

[0026] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A water discharge structure for the exhaust gas of a vacuum pump, comprising a vacuum pump (1), and further comprising a waste liquid receiving tank (2), wherein the vacuum pump (1) and the waste liquid receiving tank (2) are connected by a drainage pipeline, and is characterized in that: The suction port (102) of the vacuum pump (1) is connected to a buffer tank (3) through a transfer pipe (4). A drain pipeline is fixedly connected to the bottom of the buffer tank (3). The waste liquid receiving tank (2) is connected to the drain pipeline connected to the bottom of the buffer tank (3) through a hose (7).

2. The water discharge structure for the exhaust gas of a vacuum pump according to claim 1, wherein: The vacuum pump (1) is a double-acting reciprocating pump. A pair of suction valves (104) and exhaust valves (105) are respectively arranged on the upper and lower sides of the piston (101) of the vacuum pump (1). The pump chambers where the suction valves (104) and exhaust valves (105) are located are respectively communicated with the suction port (102) and the exhaust port (103).

3. The water discharge structure for the exhaust gas of a vacuum pump according to claim 1, wherein: The drain pipeline includes a first drain pipeline (5) and a second drain pipeline (6).

4. A water discharge structure for the exhaust gas of a vacuum pump according to claim 3, characterized in that: One end of the first drain pipeline (5) is connected to the side surface of the waste liquid receiving tank (2), and the other end is respectively connected to the transfer pipe (4) connected to the exhaust port (103) and the pump chamber where the lower exhaust valve (105) is located.

5. The water discharge structure for the exhaust gas of a vacuum pump according to claim 3, wherein: The second drain pipeline (6) is fixedly connected to the bottom of the buffer tank (3). Valves (8) are arranged at the bottom end of the second drain pipeline (6) and the part communicating with the waste liquid receiving tank (2).

6. A water discharge structure for the exhaust gas of a vacuum pump according to claim 1, characterized in that: A valve (8) is fixedly connected to the bottom of the waste liquid receiving tank (2). One end of the hose (7) is connected to the bottom end of this valve (8), and the other end is connected above the part of the second drain pipeline (6) where the valve is provided.

7. The water discharge structure of the tail gas of a vacuum pump according to claim 6, characterized in that: The hose (7) is made of a transparent material.

8. A water discharge structure for the exhaust gas of a vacuum pump according to claim 5 or 6, characterized in that: The valve (8) is a ball valve.

Images