Screw blower capable of preventing oil mist pollution

Abstract

The utility model discloses a screw blower capable of preventing oil mist pollution. The screw blower comprises a box body, a screw assembly, a driving assembly, an oil supply assembly and an oil mist separation assembly, a plurality of air inlets and air outlets are formed in the box body, and stand columns are arranged on the four edges of the side wall; the screw rod assembly is arranged in the box body and is used for sucking gas from the air inlet and discharging the gas from the air outlet; the driving assembly is arranged in the box body and is used for driving the screw rod assembly; the oil supply assembly is at least partially arranged in the tank body and comprises an oil tank, an oil mist discharge pipe and a return pipe; the oil tank is arranged at the bottom of an inner cavity; the oil mist discharge pipe and the return pipe are both inserted into the oil tank; the oil mist separation assembly is at least partially arranged in the box body, is arranged on the stand column closest to the oil supply assembly, and comprises a shell and an oil mist separator arranged in the shell; and the oil mist discharge pipe and the return pipe are respectively communicated with the oil mist separator. Through the arrangement, diffusion of oil mist in the box body is reduced, and the environmental protection property of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screw blower fan of oil mist pollution prevention. BACKGROUND

[0002] In the industrial field, screw blower fans are widely used for gas delivery and compression, but there are a series of technical problems in the running process, which need to be improved. The gear box of the screw blower fan needs to be lubricated with lubricating oil during work. However, the lubricating oil is easy to accumulate in the gear box during lubrication and may enter the suction cavity of the compressor. If the lubricating oil accumulates for a long time, it is easy to cause wear and even damage to the compressor parts, affecting the service life and performance of the equipment.

[0003] In the prior art, such as Chinese utility model patent (publication number CN220930820U), an oil mist separation core is arranged in the oil tank, and the lubricating oil is recovered through a bottom directly connected to a return oil pipe. However, when the power of the negative pressure fan is high, a large amount of lubricating oil may be sucked in while absorbing gas, resulting in increased consumption of lubricating oil and even unstable operation of the equipment; when the power of the negative pressure fan is low, the accumulated lubricating oil in the gear box is difficult to return to the oil tank through air pressure, affecting the recovery efficiency of the lubricating oil. In addition, part of the oil mist may volatilize into the tank body, and when it is blown to the heat exchanger by the cooling fan, it is easy to condense and block the fins of the heat exchanger after combining with the dust in the environment, resulting in a decrease in cooling performance, and the control system may stop running due to high temperature alarm. SUMMARY

[0004] In order to solve the problems of the prior art, the purpose of the utility model is to provide a screw blower fan of oil mist pollution prevention. The screw blower fan can cool and return the oil mist generated by the oil tank to the oil tank.

[0005] Based on the above purpose, the utility model adopts the following technical scheme:

[0006] A screw blower fan of oil mist pollution prevention, comprising: a tank body, a screw assembly, a driving assembly, an oil supply assembly, and an oil mist separation assembly; the tank body is provided with a plurality of air inlets and air outlets, and four edges of the side wall are each provided with a stand; the screw assembly is arranged in the tank body and is used for sucking gas from the air inlet and discharging it from the air outlet; the driving assembly is arranged in the tank body and is used for driving the screw assembly; the oil supply assembly is at least partially arranged in the tank body and comprises an oil tank, an oil mist discharge pipe, and a return pipe; the oil tank is arranged at the bottom of the inner cavity of the tank body; the oil mist discharge pipe and the return pipe are both inserted into the oil tank; the oil mist separation assembly is at least partially arranged in the tank body and is arranged on the stand closest to the oil supply assembly, and comprises a shell and an oil mist separator arranged in the shell; the oil mist discharge pipe and the return pipe are in communication with the oil mist separator.

[0007] Further, the column closest to the oil supply assembly is provided with a mesh hole; the mesh hole is arranged along a horizontal direction with the oil mist separator.

[0008] Further, the mesh hole is in communication with the interior of the shell; the oil mist separation assembly is communicated to the outside of the box through the mesh hole.

[0009] Further, the oil mist separation assembly comprises a support pipe; the support pipe is arranged along a vertical direction and is arranged at least partially in the shell; the top of the support pipe is connected with the oil mist separator, and the bottom of the support pipe penetrates the shell and is connected with the return pipe.

[0010] Further, the bottom of the oil mist separator is provided with a connecting port; the outer side of the connecting port is provided with a threaded structure; the oil mist separator is threadedly connected with the support pipe through the connecting port.

[0011] Further, the bottom of the oil mist separator is provided with a receiving port; the oil mist exhaust pipe is connected with the receiving port at least partially penetrating the shell.

[0012] The screw blower is provided with the oil mist separation assembly, so that the efficient separation and recovery of the oil mist are realized, the diffusion of the oil mist in the box is significantly reduced, the pollution of the mechanical parts caused by the deposition of the oil mist in the box is reduced, and the stability and reliability of the equipment operation are improved. Meanwhile, the oil mist emission of the external environment is reduced, and the environmental protection performance of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the screw blower according to the present application;

[0014] Figure 2 is a schematic diagram of the internal structure of the screw blower according to the present application;

[0015] Figure 3 is a left view of the oil mist separator according to the present application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments will be described clearly and completely in combination with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0017] Meanwhile, in order to clearly illustrate the technical solutions of the present application, the up side, down side, front side, back side, left side and right side as shown in the drawings are defined. Figure 1

[0018] Figures 1 to 3 ​​As shown, the present application provides an oil mist pollution prevention screw blower. The screw blower comprises a box body 11, a screw assembly 12, a driving assembly 13, an oil supply assembly 14 and an oil mist separation assembly 15.

[0019] Specifically, the box body 11 is provided with a plurality of air inlets 111 and air outlets 112, and the four edges of the side wall are each provided with a stand 113. The screw assembly 12 is arranged in the box body 11, for sucking gas from the air inlets 111 and discharging it from the air outlets 112, to ensure a continuous and stable compression process. The driving assembly 13 is arranged in the box body 11, for driving the screw assembly 12.

[0020] The oil supply assembly 14 is at least partially arranged in the box body 11, comprising an oil tank 141, an oil mist discharge pipe 142 and a return pipe 143. The oil tank 141 is arranged at the bottom of the inner cavity of the box body 11, for storing lubricating oil. The lubricating oil enters the gear box component and / or the screw assembly 12 in the box body 11 through the oil supply assembly 14, to reduce friction and wear. The oil mist discharge pipe 142 and the return pipe 143 are respectively inserted on the oil tank 141. The oil mist discharge pipe 142 is used to discharge the oil mist in the oil tank 141, to prevent the oil mist from accumulating in the screw assembly 12 or the suction cavity, causing damage to the screw air compressor.

[0021] The oil mist separation assembly 15 is at least partially arranged in the box body 11, arranged on the stand 113 closest to the oil supply assembly 14, comprising a shell 151 and an oil mist separator 152 arranged in the shell 151. The oil mist discharge pipe 142 and the return pipe 143 respectively communicate with the oil mist separator 152. The oil mist separator 152 is used to separate, cool and liquefy the input oil mist, and return it to the oil tank 141 through the return pipe 143, to realize the recycling of lubricating oil.

[0022] In the above embodiment, the screw blower realizes efficient separation and recovery of oil mist by arranging the oil mist separation assembly 15, significantly reduces the diffusion of oil mist inside the box body 11. Reduces the pollution of mechanical parts caused by the deposition of oil mist inside the box body 11, improves the stability and reliability of the equipment operation. At the same time, it reduces the oil mist emission of the external environment, improves the environmental performance of the equipment.

[0023] As shown, Figure 2 The stand 113 closest to the oil supply assembly 14 is provided with a mesh hole 1131. The mesh hole 1131 is arranged in the horizontal direction with the oil mist separator 152, so that the user can directly observe the running state of the oil mist separator 152 and the accumulation of oil mist inside, to judge whether the oil mist separator 152 needs to be replaced or maintained. Further reduces unnecessary disassembly inspection, improves the convenience of maintenance and equipment management efficiency.

[0024] Specifically, the mesh hole 1131 is in communication with the interior of the shell 151. The oil mist separation assembly 15 is communicated to the outside of the box body 11 through the mesh hole 1131, so that when the generated oil mist is too large, the oil mist can be discharged from the mesh hole 1131, avoiding that the oil mist is too large and pollutes the components in the box body 11.

[0025] Further, the oil mist separation assembly 15 comprises a support pipe 153. The support pipe 153 is arranged in the vertical direction and is at least partially arranged in the shell 151. The top of the support pipe 153 is connected with the oil mist separator 152, and the bottom penetrates the shell 151 and is connected with the return pipe 143. Through the above arrangement, the liquid oil droplets after being cooled and separated by the oil mist can quickly and stably return, avoiding that too much oil accumulates in the interior of the separator, thereby improving the working efficiency and operation stability of the oil mist separator 152. At the same time, the support pipe 153 is arranged in the vertical direction, which helps the liquid oil droplets to naturally sink under the action of gravity, further optimizes the separation effect, and reduces the residence time of the oil mist in the interior of the oil mist separation assembly 15. In addition, this design can also enhance the structural stability of the oil mist separation assembly 15, so that it can withstand the vibration and pressure changes caused by long-term operation.

[0026] As shown in Figure 2 and Figure 3 , the bottom of the oil mist separator 152 is provided with a connecting port 1521. The outer side of the connecting port 1521 is provided with a threaded structure, and the oil mist separator 152 is threadedly connected with the support pipe 153 through the connecting port 1521. Among them, the threaded connection can ensure that the oil mist separator 152 and the support pipe 153 are tightly fitted, effectively preventing oil mist leakage and gas overflow, and improving the overall sealing performance and working safety. At the same time, this connection structure is simple, and it is convenient to disassemble or replace the oil mist separator 152.

[0027] As a possible implementation, the bottom of the oil mist separator 152 is provided with a receiving port 1522. The oil mist discharge pipe 142 is at least partially penetrated through the shell 151 and connected with the receiving port 1522, which can ensure that the oil mist gas is accurately introduced into the oil mist separator 152 for treatment, reducing the possibility of oil mist spreading in the box body 11.

[0028] As another possible implementation, the bottom of the oil mist separator 152 is provided with a receiving port 1522, and the shell 151 is provided with a receiving pipe in communication with the receiving port 1522. The bottom of the receiving pipe is connected with the oil mist discharge pipe 142 through a joint penetrating the shell 151, so as to make the connection more convenient and facilitate the disassembly and replacement of the oil mist separation assembly 15.

[0029] Further, the top of the shell 151 is provided with a cover 154. When the oil mist separator 152 needs to be replaced, the cover 154 can be opened to directly replace the oil mist separator 152 in the shell 151, and the threaded structure at the bottom of the oil mist separator 152 is further matched, thereby improving the convenience of disassembling and assembling the oil mist separator 152.

[0030] The above is the description of the embodiments of the present application, and through the above description of the disclosed embodiments, the person skilled in the art can realize or use the present application. Various modifications of these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil mist pollution prevention screw blower, comprising: a box (11) provided with a plurality of air inlets (111) and air outlets (112), and a vertical column (113) arranged on each of the four edges of the side wall; a screw assembly (12) arranged in the box (11) for sucking air from the air inlets (111) and discharging air from the air outlets (112); a driving assembly (13) arranged in the box (11) for driving the screw assembly (12); characterized in that the screw blower further comprises: an oil supply assembly (14) at least partially arranged in the box (11) and comprising an oil tank (141), an oil mist discharge pipe (142) and a return pipe (143); the oil tank (141) is arranged at the bottom of the inner cavity of the box (11); the oil mist discharge pipe (142) and the return pipe (143) are both inserted into the oil tank (141); an oil mist separation assembly (15) at least partially arranged in the box (11) and arranged on the vertical column (113) closest to the oil supply assembly (14); the oil mist separation assembly (15) comprises a shell (151) and an oil mist separator (152) arranged in the shell (151); the oil mist discharge pipe (142) and the return pipe (143) are both in communication with the oil mist separator (152).

2. The oil mist-laden air pollution prevention screw blower as claimed in claim 1, wherein The vertical column (113) closest to the oil supply assembly (14) is provided with a mesh hole (1131); the mesh hole (1131) and the oil mist separator (152) are arranged in the horizontal direction.

3. The oil mist-laden air pollution prevention screw blower as claimed in claim 2, wherein The mesh hole (1131) is in communication with the inside of the shell (151); the oil mist separation assembly (15) is communicated to the outside of the box (11) through the mesh hole (1131).

4. The oil mist-laden air pollution prevention screw blower as claimed in claim 1, wherein The oil mist separation assembly (15) comprises a support pipe (153); the support pipe (153) is arranged in the vertical direction and at least partially arranged in the shell (151); the top of the support pipe (153) is connected with the oil mist separator (152), and the bottom of the support pipe (153) penetrates the shell (151) and is connected with the return pipe (143).

5. The oil mist-laden air pollution prevention screw blower as claimed in claim 4, wherein The bottom of the oil mist separator (152) is provided with a connecting port (1521); the outer side of the connecting port (1521) is provided with a threaded structure; the oil mist separator (152) is threadedly connected with the support pipe (153) through the connecting port (1521).

6. The oil mist-laden air pollution prevention screw blower as claimed in claim 1, wherein The bottom of the oil mist separator (152) is provided with a receiving port (1522); the oil mist discharge pipe (142) is at least partially penetrated into the shell (151) and connected with the receiving port (1522).

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