Ejection type oil-gas separation device

Abstract

The utility model belongs to the technical field of chemical equipment, and particularly relates to a gas injection type oil-gas separation device which comprises an oil mist separator, a gas injection type air extractor, an oil tank and a gas storage tank. The air ejection type air extractor comprises an air extractor body, the air extractor body comprises a first conical barrel, a throat pipe and a second conical barrel, the throat pipe is connected with the first conical barrel and the second conical barrel, an atomizing nozzle is arranged in the second conical barrel, and the atomizing nozzle is communicated with an air storage tank through a pipeline; the first connecting pipe is connected with the first conical barrel and the oil mist separator; and the second connecting pipe is connected with the second conical barrel and the oil tank. The gas treated by the gas ejection type oil-gas separation device can be directly discharged, and the separated oil is recycled into the oil tank, so that the resource is saved, the maintenance is simple, and the manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and in particular relates to an air jet type oil-gas separation device. Background Art

[0002] During the operation of the compressor unit, in order to ensure smooth oil return and reduce oil leakage from the bearing oil seal, an oil mist fan is usually used to suck the oil mist in the oil tank to form a negative pressure in the oil tank. However, its disadvantage is that the exhaust pipe often discharges a large amount of oil smoke, causing oil dripping and polluting the environment, affecting the workers' working environment; and the oil mist fan needs to run all the time, resulting in a large amount of electricity consumption, which is not conducive to energy conservation and emission reduction.

[0003] The existing oil mist blower directly discharges the gas containing oil smoke and cannot be effectively recycled, resulting in a waste of resources. The accumulation of oil droplets at the air outlet easily affects the normal operation of the device, requiring frequent maintenance and overhaul, resulting in a waste of human resources. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the current compressor unit oil removal device cannot effectively collect and recover oil mist and consumes a lot of electricity as described in the above background technology. A new jet oil-gas separation device is proposed herein, which can collect the oil mist generated by the compressor unit oil tank and recover it into the oil phase, will not pollute the environment, is easy to maintain, and saves manpower.

[0005] The technical solution adopted to achieve the above-mentioned purpose is an ejector-type oil-gas separation device, which includes an oil mist separator, an ejector-type air extractor, an oil tank and an air storage tank;

[0006] The emanator type air extractor comprises:

[0007] The vacuum extractor body comprises a first conical cylinder, a throat and a second conical cylinder, the throat connects the first conical cylinder and the second conical cylinder, an atomizing nozzle is arranged in the second conical cylinder, and the atomizing nozzle is connected to the gas storage tank through a pipeline;

[0008] a first connecting pipe, the first connecting pipe connecting the first conical cylinder and the oil mist separator;

[0009] A second connecting pipe is provided, wherein the second connecting pipe connects the second conical cylinder and the oil tank.

[0010] In the above technical solution, the oil mist separator serves to separate oil and gas, and the jet vacuum pump serves to suck the oil tank to generate negative pressure and send the oil mist in the oil tank into the oil mist separator. The device can effectively form a negative pressure in the compressor oil tank and allow the oil mist to enter the oil mist separator for separation and recovery.

[0011] Furthermore, the jet-type oil-gas separation device also includes a first oil return pipe, which is connected to the oil mist separator and the oil tank.

[0012] In the above technical solution, the oil mist separator collects the separated oil at the bottom of the separator, and the first oil return pipe presses the oil back into the oil tank for recovery through the oil pressure difference.

[0013] Furthermore, the atomizing nozzle comprises an inner sleeve and an outer sleeve, the inner diameter of the outer sleeve is larger than the outer diameter of the inner sleeve, and the outer sleeve is sleeved outside the inner sleeve.

[0014] Furthermore, the inner sleeve is connected to the gas storage tank through a pipeline.

[0015] In the above technical solution, the inner sleeve is connected to the air storage tank, in which nitrogen or air is stored, which enters the jet-type vacuum pump to generate vacuum, and sucks the oil tank to form negative pressure.

[0016] Furthermore, the jet-type oil-gas separation device also includes a liquid storage tank, and the liquid storage tank is connected to the outer casing through a pipeline.

[0017] In the above technical solution, the degreasing liquid is stored in the liquid storage tank, enters the jet-type vacuum pump through the outer sleeve, and forms small droplets through the atomizing nozzle, which are mixed with the nitrogen or air introduced through the inner sleeve to reduce the amount of harmful smoke in the oil mist.

[0018] Furthermore, a gas booster pump and a gas pressure reducing valve are also provided on the pipeline connecting the atomizing nozzle and the gas storage tank.

[0019] In the above technical solution, the device plays a role in regulating the pressure of air or nitrogen, so that the air or nitrogen entering the jet-type vacuum pump is adjusted to 0.4-0.6MPa to form a pressure difference, and the oil mist in the oil tank is sucked into the oil mist separator.

[0020] Furthermore, an oil return baffle is provided at the connection between the first conical cylinder and the first connecting pipe.

[0021] Furthermore, a second oil return pipe is provided below the oil return baffle, and the second oil return pipe is connected to the first conical cylinder and the first connecting pipe.

[0022] Furthermore, the diameters of the ends of the first conical tube and the second conical tube away from the throat are larger than the diameters of the ends of the first conical tube and the second conical tube close to the throat.

[0023] The advantages of the utility model are:

[0024] 1. The utility model adopts an air jet oil-gas separation device to replace the existing oil mist fan, which can suck and separate the oil mist in the compressor oil tank with high separation efficiency, and can collect more than 99% of the oil mist into oil droplets for recycling, thereby reducing the operating cost.

[0025] 2. The gas discharged by the utility model does not contain oil mist and will not pollute the environment.

[0026] 3. The jet-type vacuum pump of the utility model does not need to be driven by electricity, and only needs to provide 0.4-0.6MPa nitrogen or air. These gases are easy to obtain for chemical plants, can save production costs, facilitate maintenance, and save manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the air ejector of the utility model.

[0030] Illustrations: 1. Oil mist separator, 2. Jet-type vacuum pump, 3. Oil tank, 4. First oil return pipe, 210. Vacuum pump body, 211. First conical cylinder, 212. Throat, 213. Second conical cylinder, 214. Atomizing nozzle, 215. Inner sleeve, 216. Outer sleeve, 220. First connecting pipe, 230. Second connecting pipe, 240. Oil return baffle, 250. Second oil return pipe. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] like Figure 1 As shown, a jet steam oil-gas separation device is composed of an oil mist separator 1, a jet steam vacuum pump 2, an oil tank 3, a first oil return pipe 4, a liquid storage tank and an air storage tank (the liquid storage tank and the air storage tank are not shown in the figure), wherein the jet steam vacuum pump is connected to the oil mist separator and the oil tank, and the first oil return pipe is connected to the oil tank and the oil mist separator.

[0034] It should be noted that the function of the gas storage tank is to provide nitrogen or air, which can be replaced by a nitrogen delivery pipeline or the like; the function of the liquid storage tank is to provide degreasing liquid, which can be replaced by a degreasing liquid delivery pipeline or the like.

[0035] like Figure 2 As shown, the jet-type vacuum pump is composed of a vacuum pump body 210, a first connecting pipe 220 and a second connecting pipe 230, wherein the vacuum pump body is composed of a first conical tube 211, a throat 212 and a second conical tube 213, the throat is a tubular structure, the throat connects the first conical tube and the second conical tube, an atomizing nozzle is arranged in the second conical tube, and the atomizing nozzle includes an inner sleeve 215 and an outer sleeve 216, the inner diameter of the outer sleeve is larger than the outer diameter of the inner sleeve, and the outer sleeve is arranged outside the inner sleeve.

[0036] The first connecting pipe connects the first conical cylinder and the oil mist separator, the second connecting pipe connects the second conical cylinder and the oil tank, the inner sleeve is connected to the air storage tank through a pipeline, and the outer sleeve is connected to the liquid storage tank through a pipeline.

[0037] In this embodiment, a gas booster pump and a gas pressure reducing valve are also provided on the pipeline connecting the atomizing nozzle and the gas storage tank, the purpose of which is to compress the air or nitrogen to 0.4-0.6MPa, so that it enters the jet-type vacuum pump to form a negative pressure to suck the oil mist in the oil tank.

[0038] In this embodiment, an oil return baffle 240 is provided at the connection between the first conical cylinder and the first connecting pipe, and a second oil return pipe 250 is provided below the oil return baffle. The second oil return pipe connects the first conical cylinder and the first connecting pipe.

[0039] In this embodiment, the diameter of the first conical tube and the second conical tube at one end away from the throat is larger than the diameter of the first conical tube and the second conical tube at one end close to the throat, and the combination thereof is shaped like an "hourglass".

[0040] The working principle of the utility model is as follows: nitrogen or air is adjusted to 0.4-0.6MPa through a gas booster pump and a gas pressure reducing valve, and is input into an ejector-type vacuum pump through an inner sleeve, the oil tank is sucked to form a negative pressure, the oil mist in the oil tank is sucked into an oil mist separator for oil and gas separation, and the deoiling liquid is input into the ejector-type vacuum pump through an outer sleeve, the deoiling liquid is converted into small droplets through an atomizing nozzle and mixed with nitrogen or air, the oil mist in the oil tank reacts with the deoiling droplets during the rising process, and harmful fumes in the oil mist are removed, and finally the oil separated by the oil mist separator is collected at the bottom of the separator, and the first oil return pipe will press the oil back into the oil tank through the pressure difference for recovery, and the gas without oil can be discharged directly.

[0041] Finally, it should be noted that this embodiment is only used to illustrate the present invention and does not limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An air jet oil-gas separation device, characterized in that: The jet-type oil-gas separation device comprises an oil mist separator (1), a jet-type air extractor (2), an oil tank (3) and an air storage tank; The emanator type air extractor comprises: An air extractor body (210), the air extractor body comprising a first conical cylinder (211), a throat (212) and a second conical cylinder (213), the throat connecting the first conical cylinder and the second conical cylinder, an atomizing nozzle (214) being arranged in the second conical cylinder, the atomizing nozzle being connected to the air storage tank via a pipeline; A first connecting pipe (220), the first connecting pipe connecting the first conical cylinder and the oil mist separator; A second connecting pipe (230) is provided, wherein the second connecting pipe connects the second conical cylinder and the oil tank.

2. The jet type oil-gas separation device according to claim 1, characterized in that: The jet-type oil-gas separation device also includes a first oil return pipe (4), which is connected to the oil mist separator and the oil tank.

3. The jet type oil-gas separation device according to claim 1, characterized in that: The atomizing nozzle comprises an inner sleeve (215) and an outer sleeve (216), the inner diameter of the outer sleeve is greater than the outer diameter of the inner sleeve, and the outer sleeve is sleeved outside the inner sleeve.

4. The jet type oil-gas separation device according to claim 3, characterized in that: The inner sleeve is communicated with the gas storage tank through a pipeline.

5. The jet type oil-gas separation device according to claim 3, characterized in that: The jet-type oil-gas separation device also includes a liquid storage tank, which is connected to the outer casing through a pipeline.

6. The jet type oil-gas separation device according to claim 1, characterized in that: A gas booster pump and a gas pressure reducing valve are also provided on the pipeline connecting the atomizing nozzle and the gas storage tank.

7. The jet type oil-gas separation device according to claim 1, characterized in that: An oil return baffle (240) is provided at the connection between the first conical cylinder and the first connecting pipe.

8. The jet type oil-gas separation device according to claim 7, characterized in that: A second oil return pipe (250) is provided below the oil return baffle, and the second oil return pipe is connected with the first conical cylinder and the first connecting pipe.

9. The jet type oil-gas separation device according to claim 1, characterized in that: The diameters of the ends of the first and second conical cylinders away from the throat are larger than the diameters of the ends of the first and second conical cylinders close to the throat.

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