Oil-gas separator for vacuum unit

Abstract

The utility model discloses an oil-gas separator for a vacuum unit, which comprises a separator, an inlet connecting part is arranged on one side of the middle of the separator, and the inlet connecting part is communicated with an outlet of a roots pump through a corresponding pipeline; an outlet connecting part is arranged at one end of the upper part of the separator and is communicated with an inlet of the liquid ring pump through a corresponding pipeline; a liquid outlet is formed in the bottom of the separator; two cooling plates are fixedly arranged in the separator; the two cooling plates are fixedly arranged on the left side and the right side of the separator respectively and are arranged up and down at an interval; the bottoms of the two cooling plates are respectively provided with a cooling coil pipe, and the two cooling coil pipes are respectively communicated with an external circulating water system. Under the normal operation state of the vacuum unit of the wax making equipment, non-condensable gas generated in the unit can be completely condensed, the gas suction rate of the unit is not affected, and normal operation of the liquid ring pump and the service life of vacuum pump oil are effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wax product processing equipment, in particular to an oil-gas separator used in a vacuum unit. Background Art

[0002] During the wax production process, the wax raw materials enter the distillation unit and are heated for gas-liquid separation. The vacuum unit provides negative pressure for it and brings out the light phase distillate. The light component is condensed by the condenser and enters the light phase collection tank and is produced to the product tank. In the process of the vacuum unit bringing out the light phase material, some non-condensable gas will enter the vacuum machine, condense and enter the liquid ring pump, and mix with the vacuum circulating oil of the liquid ring pump. The condensate produced by the above non-condensable gas has low viscosity and is corrosive to a certain extent, which will reduce the viscosity of the circulating vacuum oil of the liquid ring pump and damage the internal components of the pump cavity of the liquid ring pump.

[0003] Although there is an oil-gas separation device inside the existing vacuum unit, the separation capacity is low and it cannot completely condense and separate the oil. Therefore, an oil-gas separator for the vacuum unit is developed. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-gas separator used in a vacuum unit to solve the technical problems mentioned in the above background technology.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The utility model discloses an oil-gas separator for a vacuum unit, comprising a separator, wherein an inlet connection portion is provided on one side of a middle portion of the separator, and the inlet connection portion is connected to the outlet of a Roots pump through a corresponding pipeline; an outlet connection portion is provided on one end of an upper portion of the separator, and the outlet connection portion is connected to the inlet of a liquid ring pump through a corresponding pipeline; a drain port is provided at the bottom of the separator; two cooling plates are fixedly provided at a position above the inlet connection portion in the interior of the separator, the two cooling plates are respectively fixedly provided on the left and right sides of the separator and are spaced apart from each other in an upper and lower manner; cooling coils are respectively provided at the bottoms of the two cooling plates, and the two cooling coils are respectively connected to an external circulating water system.

[0007] Furthermore, the bottom surfaces of the two cooling plates have a slope, and the upper and lower spacing between them is 30 cm.

[0008] Furthermore, the two cooling coils are connected via an upper and lower coil connecting pipe.

[0009] Furthermore, one end of the cooling coil located at the bottom extends to the outside of the separator and is provided with a cooling water inlet, and the cooling water inlet is connected to the water outlet end of the circulating water system; one end of the cooling coil located at the top extends to the outside of the separator and is provided with a cooling water outlet, and the cooling water outlet is connected to the return water end of the circulating water system.

[0010] Furthermore, a pressure relief valve is provided at the other upper end of the separator, and a drain valve is provided on the drain port.

[0011] Compared with the prior art, the beneficial technical effects of the present invention are:

[0012] The utility model can completely condense the non-condensable gas generated inside the vacuum unit of wax making equipment under normal operating conditions without affecting the air extraction volume of the unit. It has a simple structure and is easy to manufacture, and can achieve the effect of oil removal, effectively ensuring the normal operation of the liquid ring pump and the service life of the vacuum pump oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cooling plate structure in the present utility model;

[0016] Explanation of the accompanying symbols: 1. Separator; 2. Inlet connection; 3. Outlet connection; 4. Pressure relief valve; 5. Support frame; 6. Drain port; 7. Cooling plate; 8. Cooling coil; 9. Upper and lower coil connecting pipe; 10. Cooling water inlet; 11. Cooling water outlet. DETAILED DESCRIPTION

[0017] like Figure 1-Figure 2 As shown, an oil-gas separator for a vacuum unit includes a separator 1. An inlet connector 2 is mounted on one side of the middle portion of the separator 1 and communicates with the interior thereof. The inlet connector 2 is connected to the outlet of a Roots pump via a corresponding pipeline. An outlet connector 3 is mounted on one end of the upper portion of the separator 1 and communicates with the interior thereof. The outlet connector 3 is connected to the inlet of a liquid ring pump via a corresponding pipeline.

[0018] A pressure relief valve 4 is installed at the other end of the upper portion of the separator 1. A support frame 5 is provided near the bottom of the separator 1. A drain port 6 is installed at the bottom of the separator 1, and a drain valve is installed on the drain port.

[0019] Two cooling plates 7 are fixedly mounted inside the separator 1 above the inlet connection 2. The two cooling plates 7 are welded to the left and right sides of the separator 1 and spaced apart. The bottom surfaces of the two cooling plates 7 have a certain slope, and the vertical spacing between them is 30 cm.

[0020] A cooling coil 8 is fixedly mounted on the bottom of each of the two cooling plates, and each of the two cooling coils 8 is connected to an external circulating water system. Specifically, the two cooling coils 8 are connected via an upper and lower coil connecting pipe 9; one end of the lower cooling coil 8 extends to the outside of the separator 1 and is provided with a cooling water inlet 10, which is connected to the water outlet of the circulating water system; one end of the upper cooling coil 8 extends to the outside of the separator 1 and is provided with a cooling water outlet 11, which is connected to the return water end of the circulating water system.

[0021] The working principle of this utility model is as follows:

[0022] First, place the separator on a flat surface using a support frame. Then, connect the separator's inlet connection to the Roots pump's outlet flange via piping, and install a valve on the piping connecting the Roots pump and the inlet connection. Connect the separator's outlet connection to the liquid ring pump's inlet flange via piping, and install a valve on the piping connecting the outlet connection to the liquid ring pump. Close the separator's top pressure relief valve 4 and the drain valve on the bottom drain port. Connect the cooling water inlet 10 and cooling water outlet 11 to the circulating water system's main pipe flange via piping, and install the corresponding valves. Open the circulating water system valve, then open the valves on the cooling water inlet and cooling water outlet, start the vacuum unit, and vacuum the system. After normal production, the non-condensable gas generated by the system will flow into the bottom of separator 1 after passing through the separator, condensing through the cooling plate and cooling coil inside the separator. When the liquid level in the separator reaches a certain level, close the valves on the corresponding connecting pipes of the inlet and outlet connections, open the pressure relief valve at the top of the separator, and after the pressure relief is completed, open the drain valve at the drain port at the bottom of the separator to drain. After the drainage is completed, close the drain valve and pressure relief valve, open the valves on the corresponding pipes of the inlet and outlet connections, and put it into normal use.

[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An oil-gas separator for a vacuum unit, characterized by: It includes a separator, an inlet connection part is provided on one side of the middle part of the separator, and the inlet connection part is connected with the outlet of the Roots pump through a corresponding pipeline; an outlet connection part is provided on one end of the upper part of the separator, and the outlet connection part is connected with the inlet of the liquid ring pump through a corresponding pipeline; a drain port is provided at the bottom of the separator; two cooling plates are fixedly provided at the position above the inlet connection part inside the separator, and the two cooling plates are respectively fixed on the left and right sides of the separator and are spaced apart from each other; cooling coils are respectively provided at the bottom of the two cooling plates, and the two cooling coils are respectively connected to the external circulating water system.

2. The oil-gas separator used in the vacuum unit according to claim 1, characterized in that: The bottom surfaces of the two cooling plates have a slope, and the upper and lower spacing between the two is 30 cm.

3. The oil-gas separator used in the vacuum unit according to claim 1, characterized in that: The two cooling coils are connected via an upper and lower coil connecting pipe.

4. The oil-gas separator used in the vacuum unit according to claim 3, characterized in that: One end of the cooling coil located at the bottom extends to the outside of the separator and is provided with a cooling water inlet, and the cooling water inlet is connected to the water outlet end of the circulating water system; one end of the cooling coil located at the top extends to the outside of the separator and is provided with a cooling water outlet, and the cooling water outlet is connected to the return water end of the circulating water system.

5. The oil-gas separator used in the vacuum unit according to claim 1, characterized in that: The other end of the upper portion of the separator is provided with a pressure relief valve, and the drain port is provided with a drain valve.

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