Vacuum equipment of extruder

Abstract

The invention discloses vacuum equipment of an extruder. The vacuum equipment comprises a settling tank, a cold-heat exchanger, a vacuum pump and an exhaust device, an air inlet of the settling box is connected with an air outlet of the extruder, a first condensation assembly is arranged in the settling box, an air inlet of the cold-heat exchanger is connected with an air outlet of the settling box through a first air inlet pipe, the first air inlet pipe is provided with a first valve, an air outlet of the cold-heat exchanger is connected with a first air outlet pipe, and the first air outlet pipe is provided with a second valve. And a second condensation assembly is arranged in the cold-heat exchanger. And an extraction opening of the vacuum pump is respectively connected with the first air outlet pipes of the two cold-heat exchangers. A gas inlet of the exhaust device is connected with a gas outlet of the vacuum pump, a third condensation assembly is arranged in the exhaust device, and a filtering assembly is arranged at a gas outlet of the exhaust device and used for filtering gas. According to the vacuum equipment of the extruder, the other cold-heat exchanger can be started while the cold-heat exchanger is cleaned, and the whole machine does not need to be shut down, so that the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of extruders, in particular to vacuum equipment for extruders. Background Art

[0002] The extruder is one of the machines for processing plastics. The general principle of processing plastics is: first load the plastic material into the extruder, the extruder moves and transports the plastic raw materials. During the material transportation process, the extruder heats the plastic material. The heated plastic material is in a viscous flow state. The plastic in the viscous flow state is cooled through the die to produce a finished plastic product. In order to improve the quality of the processed plastic and make the particles between the plastics more compact, the extruder needs to be vacuumed. After the current vacuum equipment has been pumped for a period of time, the inside of the exchanger is prone to blockage, and it needs to be stopped for cleaning, which affects the work efficiency. Moreover, the gas purification is not thorough, and the discharge into the atmosphere will cause pollution. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides an extruder vacuum device.

[0004] An embodiment of the present invention provides an extruder vacuum device, the extruder vacuum device comprising:

[0005] A settling box, wherein the air inlet of the settling box is connected to the air outlet of the extruder, and a first condensing component is provided in the settling box, and the first condensing component is used to condense the gas and precipitate impurities carried by the gas;

[0006] A heat exchanger, wherein the heat exchanger has two heat exchangers, the air inlet of the heat exchanger is connected to the air outlet of the sedimentation tank through a first air inlet pipe, the first air inlet pipe is provided with a first valve, the air outlet of the heat exchanger is connected to the first air outlet pipe, the first air outlet pipe is provided with a second valve, and a second condensation component is provided in the heat exchanger, the second condensation component is used to condense gas;

[0007] A vacuum pump, wherein the air suction port of the vacuum pump is respectively connected to the first air outlet pipes of the two cold and heat exchangers;

[0008] An exhaust device, wherein the air inlet of the exhaust device is connected to the air outlet of the vacuum pump, a third condensing component is arranged in the exhaust device, and the third condensing component is used to condense gas, and a filter component is arranged at the air outlet of the exhaust device, and the filter component is used to filter gas.

[0009] The extruder vacuum equipment according to the embodiment of the present invention has at least the following technical effects: the gas from the extruder enters the sedimentation box for preliminary condensation and sedimentation, the first valve and the second valve on one heat exchanger are controlled to be open, and the first valve and the second valve on the other heat exchanger are controlled to be closed, so that the gas in the sedimentation box enters one of the heat exchangers for condensation, and the other heat exchanger can be cleaned and maintained, and the gas in the heat exchanger enters the exhaust device for further condensation after condensation, and then is discharged after passing through the filter component. The sedimentation box of the extruder vacuum equipment can perform preliminary precipitation of the gas, reduce the possibility of gas blocking the heat exchanger, and when the heat exchanger needs to be cleaned, another heat exchanger can be activated at the same time without shutting down the whole machine, thereby improving work efficiency, and the filter component can filter the gas to avoid polluting the outside world.

[0010] According to some embodiments of the present invention, a first sewage pipe is connected to the bottom of the sedimentation tank, and a first condensation assembly includes a first water inlet pipe, a first water outlet pipe and a first condensation pipe. The first condensation pipe is U-shaped, and the two ends of the first condensation pipe are respectively connected to the first water inlet pipe and the first water outlet pipe. The first condensation pipe is located in the sedimentation tank, and the first condensation pipe divides the inner cavity of the sedimentation tank into a first chamber and a second chamber. There is a certain gap between the first condensation pipe and the bottom of the sedimentation tank so that the first chamber and the second chamber are connected; the air inlet of the sedimentation tank is connected to the first chamber, and the air outlet of the sedimentation tank is connected to the second chamber.

[0011] According to some embodiments of the present invention, a second drain pipe is connected to the bottom of the heat exchanger, the second condensation assembly includes a second water inlet pipe, a second water outlet pipe and a plurality of second condensation pipes, the second condensation pipe is located inside the heat exchanger, and the two ends of the second condensation pipe are respectively connected to the second water inlet pipe and the second water outlet pipe.

[0012] According to some embodiments of the present invention, a first partition and a second partition are provided in the heat exchanger, the first partition separates the heat exchanger into a first zone and a second zone, the first zone is located above the second zone, the second partition separates the first zone into a water inlet zone and a water outlet zone, the second condenser is located in the second zone, the second condenser is U-shaped, the two ends of the second condenser are respectively connected to the water inlet zone and the water outlet zone, and the first air inlet pipe and the first air outlet pipe are respectively connected to the second zone.

[0013] According to some embodiments of the present invention, an air inlet of the cold-heat exchanger is lower than an air outlet of the cold-heat exchanger.

[0014] According to some embodiments of the present invention, the heat exchanger is connected to an air blowing pipe, the air blowing pipe is connected to the second zone, the connection end of the air blowing pipe and the heat exchanger is higher than the connection end of the first air inlet pipe and the heat exchanger, and the air blowing pipe is used to blow away the oil stains attached to the second condenser and the inner wall of the heat exchanger.

[0015] According to some embodiments of the present invention, an annular partition is provided in the exhaust device, and the annular partition divides the inner cavity of the exhaust device into an annular area and a middle area. The exhaust device is respectively connected to the second air inlet pipe and the second air outlet pipe, and the second air inlet pipe and the second air outlet pipe are both connected to the middle area. The air outlet of the vacuum pump is connected to the second air inlet pipe, and the lower end of the second air outlet pipe is connected to the top of the exhaust device. The filter assembly is arranged in the second air outlet pipe.

[0016] According to some embodiments of the present invention, the third condensation assembly includes a third water inlet pipe, a third water outlet pipe and a third condenser, the third condenser is located in the middle area, the third water inlet pipe is respectively connected to the annular area and one end of the third condenser, and the third water outlet pipe is respectively connected to the annular area and the other end of the third condenser.

[0017] According to some embodiments of the present invention, the filter assembly includes filter cotton and an exhaust fan, the filter cotton is located above the exhaust fan, and the exhaust fan is used to extract the gas out of the exhaust device.

[0018] According to some embodiments of the present invention, the exhaust device is connected to an oil return pipe, and the oil return pipe is respectively connected to the middle area and the vacuum pump.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of the structure of an extruder vacuum device of some embodiments of the present invention;

[0022] Figure 2 is a partial structural schematic diagram of an extruder vacuum device in some embodiments of the present invention;

[0023] Figure 3 is a partial structural schematic diagram of an extruder vacuum device in some embodiments of the present invention;

[0024] Figure 4It is a partial structural schematic diagram of the extruder vacuum equipment of some embodiments of the present invention.

[0025] Figure Number:

[0026] Sedimentation tank 100, first sewage pipe 110, first condensation assembly 120, first water inlet pipe 121, first water outlet pipe 122, first condensation pipe 123, first chamber 131, second chamber 132;

[0027] The heat exchanger 200, the first air inlet pipe 210, the first valve 211, the first air outlet pipe 220, the second valve 221, the second sewage pipe 230, the second condensation assembly 240, the second water inlet pipe 241, the second water outlet pipe 242, the second condensation pipe 243, the first partition plate 251, the second partition plate 252, the first area 261, the second area 262, the water inlet area 271, the water outlet area 272, and the air blowing pipe 280;

[0028] Exhaust device 300, annular partition 310, annular area 311, middle area 312, second air inlet pipe 330, second air outlet pipe 340, third condensation assembly 350, third water inlet pipe 351, third water outlet pipe 352, third condensation pipe 353, filter assembly 360, filter cotton 361, exhaust fan 362, oil return pipe 370;

[0029] Extruder 400 and vacuum pump 410 . DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are 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 device or element referred to 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.

[0032] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0035] According to some embodiments of the present invention, referring to Figures 1 to 4 The extruder vacuum equipment includes a sedimentation box 100, a cold and heat exchanger 200, a vacuum pump 410 and an exhaust device 300. The air inlet of the sedimentation box 100 is connected to the air outlet of the extruder 400, and the gas in the extruder 400 enters the sedimentation box 100. A first condensation component 120 is provided in the sedimentation box 100, and the first condensation component 120 can condense the gas and precipitate the impurities carried by the gas. The cold and heat exchanger 200 has two, and the air inlet of the cold and heat exchanger 200 is connected to the air outlet of the sedimentation box 100 through a first air inlet pipe 210, and the first air inlet pipe 210 is provided with a first valve 211. The air outlet of the cold and heat exchanger 200 is connected to the first air outlet pipe 220, and the first air outlet pipe 220 is provided with a second valve 221. A second condensation component 240 is provided in the cold and heat exchanger 200, and the second condensation component 240 is used to condense the gas. The suction port of the vacuum pump 410 is respectively connected to the first air outlet pipes 220 of the two cold and heat exchangers 200. The air inlet of the exhaust device 300 is connected to the air outlet of the vacuum pump 410. The exhaust device 300 is provided with a third condensing component 350, which is used to condense gas. The exhaust device 300 is provided with a filter component 360 at the air outlet, which is used to filter gas. When the vacuum pump 410 is working, the vacuum pump 410 extracts the gas in the extruder 400, and the gas passes through the sedimentation tank 100, the cold and heat exchanger 200 and the exhaust device 300 in sequence and is finally discharged.

[0036] It can be understood that when the first valve 211 and the second valve 221 on one heat exchanger 200 are controlled to be opened, and the first valve 211 and the second valve 221 on the other heat exchanger 200 are controlled to be closed, the gas in the sedimentation tank 100 will all enter one of the heat exchangers 200 for condensation. At this time, the other heat exchanger 200 can be cleaned and maintained. The gas in the heat exchanger 200 is condensed and then enters the exhaust device 300 for further condensation, and then is discharged after passing through the filter component 360.

[0037] The sedimentation box 100 of the extruder vacuum equipment can perform preliminary sedimentation of the gas, reducing the possibility of gas blocking the cold and hot exchanger 200. Moreover, when one of the cold and hot exchangers 200 needs to be cleaned, the other cold and hot exchanger 200 can be activated at the same time without stopping the whole machine, thereby improving work efficiency, and the filter assembly 360 can filter the gas to avoid polluting the outside world.

[0038] According to some embodiments of the present invention, referring to Figure 2 The bottom of the sedimentation tank 100 is connected with a first sewage pipe 110, and the first condensation assembly 120 includes a first water inlet pipe 121, a first water outlet pipe 122 and a first condensation pipe 123. The first condensation pipe 123 is U-shaped, and the two ends of the first condensation pipe 123 are respectively connected to the first water inlet pipe 121 and the first water outlet pipe 122. The first condensation pipe 123 is located in the sedimentation tank 100. The first condensation pipe 123 separates the inner cavity of the sedimentation tank 100 into a first chamber 131 and a second chamber 132. There is a certain gap between the first condensation pipe 123 and the bottom of the sedimentation tank 100 so that the first chamber 131 and the second chamber 132 are connected. The air inlet of the sedimentation tank 100 is connected to the first chamber 131, and the air outlet of the sedimentation tank 100 is connected to the second chamber 132.

[0039] It can be understood that after the gas in the extruder 400 enters the first chamber 131, it contacts the surface of the first condenser tube 123 and condenses. Liquid and solid impurities accumulate at the bottom of the precipitation box 100 under the action of gravity. The U-shaped first condenser tube 123 can guide the gas to flow along the U shape. Figure 2 The arrow direction is the flow direction of the gas, so that the liquid and the fixed are accumulated at the bottom of the sedimentation tank 100. After entering the second chamber 132, the gas leaves the sedimentation tank 100 and enters the cold and heat exchanger 200. The cooperation of the first water inlet pipe 121 and the first water outlet pipe 122 ensures that the first condenser pipe 123 continuously has flowing cold water to facilitate heat exchange with the gas.

[0040] According to some embodiments of the present invention, referring to Figure 3 The bottom of the cold and heat exchanger 200 is connected with a second sewage pipe 230, and the second condensation assembly 240 includes a second water inlet pipe 241, a second water outlet pipe 242 and a plurality of second condensation pipes 243. The second condensation pipes 243 are located in the cold and heat exchanger 200, and the two ends of the second condensation pipes 243 are respectively connected with the second water inlet pipe 241 and the second water outlet pipe 242. The cooperation of the second water inlet pipe 241 and the second water outlet pipe 242 allows the second condensation pipe 243 to continuously have flowing cold water inside so as to facilitate heat exchange with the gas. The plurality of second condensation pipes 243 cooperate together to increase the contact area with the gas, thereby improving the condensation efficiency.

[0041] Preferably, refer to Figure 3The first partition 251 and the second partition 252 are provided in the cold and heat exchanger 200. The first partition 251 is arranged horizontally. The first partition 251 separates the cold and heat exchanger 200 into a first area 261 and a second area 262. The first area 261 is located above the second area 262. The second partition 252 is arranged vertically. The second partition 252 separates the first area 261 into a water inlet area 271 and a water outlet area 272. The second condenser 243 is located in the second area 262. The second condenser 243 is U-shaped to increase the contact area with the gas. The two ends of the second condenser 243 are respectively connected to the water inlet area 271 and the water outlet area 272. The first air inlet pipe 210 and the first air outlet pipe 220 are respectively connected to the second area 262. It is understandable that the water in the second water inlet pipe 241 first enters the water inlet area 271, and the water in the water inlet area 271 is evenly distributed in the water inlet area 271 and enters the plurality of second condensing tubes 243 respectively, so as to avoid uneven distribution of cold water in the plurality of second condensing tubes 243 and avoid insufficient cold water in some second condensing tubes 243. Preferably, the air inlet of the cold-heat exchanger 200 is lower than the air outlet of the cold-heat exchange, so that the gas entering the cold-heat exchanger 200 flows from bottom to top and fully exchanges heat with the second condensing tubes 243.

[0042] Preferably, refer to Figure 3 The heat exchanger 200 is connected to an air blowing pipe 280, which is connected to the second zone 262. The connection end of the air blowing pipe 280 and the heat exchanger 200 is higher than the connection end of the first air inlet pipe 210 and the heat exchanger 200. The air blowing pipe 280 can blow away the oil stains attached to the second condenser 243 and the inner wall of the heat exchanger 200, so that the oil stains and other impurities flow downward and accumulate at the bottom of the heat exchanger 200, so as to be discharged through the second drain pipe 230.

[0043] According to some embodiments of the present invention, referring to Figure 1 and Figure 4The exhaust device 300 is provided with an annular partition 310, which divides the inner cavity of the exhaust device 300 into an annular area 311 and a middle area 312, and the annular area 311 surrounds the middle area 312. The exhaust device 300 is connected to the second air inlet pipe 330 and the second air outlet pipe 340 respectively, and the second air inlet pipe 330 and the second air outlet pipe 340 are both connected to the middle area 312, the air outlet of the vacuum pump 410 is connected to the second air inlet pipe 330, the lower end of the second air outlet pipe 340 is connected to the top of the exhaust device 300, and the filter assembly 360 is arranged in the second air outlet pipe 340. The third condensation assembly 350 includes a third water inlet pipe 351, a third water outlet pipe 352 and a third condensation pipe 353. The third condensation pipe 353 is located in the middle area 312. The third water inlet pipe 351 is respectively connected to the annular area 311 and one end of the third condensation pipe 353. The third water outlet pipe 352 is respectively connected to the annular area 311 and the other end of the third condensation pipe 353.

[0044] It is understandable that the cooperation between the third water inlet pipe 351 and the third water outlet pipe 352 allows the third condenser pipe 353 and the annular area 311 to continuously have flowing cold water for heat exchange with the gas. After the gas enters the middle area 312 through the second air inlet pipe 330, the gas exchanges heat with the annular partition 310 and the third condenser pipe 353.

[0045] According to some embodiments of the present invention, referring to Figure 4 The filter assembly 360 includes filter cotton 361 and an exhaust fan 362. The filter cotton 361 is located above the exhaust fan 362. The filter cotton 361 can filter impurities in the gas to prevent the gas from polluting the outside. The exhaust fan 362 is used to extract the gas out of the exhaust device 300.

[0046] According to some embodiments of the present invention, referring to Figure 4 The exhaust device 300 is connected to an oil return pipe 370, and the oil return pipe 370 is respectively connected to the middle area 312 and the vacuum pump 410. It is understandable that the gas coming out of the extruder 400 usually does not carry oil after condensation in the sedimentation tank 100 and the heat exchanger 200. When the gas passes through the vacuum pump 410, the pump oil of the vacuum pump 410 may leak, causing the pump oil to flow with the gas. Therefore, the third condensation component 350 is required to condense the gas again, and the oil obtained after condensation can be reused and returned to the vacuum pump 410, avoiding the need to frequently add new pump oil, saving costs and improving efficiency.

[0047] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An extruder vacuum device, characterized in that: include: A settling box (100), wherein the air inlet of the settling box (100) is connected to the air outlet of the extruder (400), and a first condensing component (120) is provided in the settling box (100), and the first condensing component (120) is used to condense gas and precipitate impurities carried by the gas; A heat exchanger (200), wherein the heat exchanger (200) has two parts, the air inlet of the heat exchanger (200) is connected to the air outlet of the sedimentation tank (100) via a first air inlet pipe (210), the first air inlet pipe (210) is provided with a first valve (211), the air outlet of the heat exchanger (200) is connected to a first air outlet pipe (220), the first air outlet pipe (220) is provided with a second valve (221), and a second condensation component (240) is provided in the heat exchanger (200), the second condensation component (240) is used to condense gas; A vacuum pump (410), wherein an air suction port of the vacuum pump (410) is respectively connected to the first air outlet pipes (220) of the two cold and heat exchangers (200); An exhaust device (300), wherein the air inlet of the exhaust device (300) is connected to the air outlet of the vacuum pump (410), a third condensing component (350) is provided in the exhaust device (300), and the third condensing component (350) is used to condense gas, and a filtering component (360) is provided at the air outlet of the exhaust device (300), and the filtering component (360) is used to filter gas.

2. The extruder vacuum equipment according to claim 1, characterized in that: The bottom of the sedimentation tank (100) is connected to a first sewage pipe (110), and the first condensation assembly (120) comprises a first water inlet pipe (121), a first water outlet pipe (122) and a first condensation pipe (123). The first condensation pipe (123) is U-shaped, and the two ends of the first condensation pipe (123) are respectively connected to the first water inlet pipe (121) and the first water outlet pipe (122). The first condensation pipe (123) is located in the sedimentation tank (100). A condenser (123) separates the inner cavity of the sedimentation box (100) into a first chamber (131) and a second chamber (132); a certain gap is formed between the first condenser (123) and the bottom of the sedimentation box (100) so that the first chamber (131) and the second chamber (132) are connected; an air inlet of the sedimentation box (100) is connected to the first chamber (131), and an air outlet of the sedimentation box (100) is connected to the second chamber (132).

3. The extruder vacuum equipment according to claim 1, characterized in that: A second sewage pipe (230) is connected to the bottom of the heat exchanger (200); the second condensation assembly (240) includes a second water inlet pipe (241), a second water outlet pipe (242) and a plurality of second condensation pipes (243); the second condensation pipes (243) are located inside the heat exchanger (200); and both ends of the second condensation pipes (243) are respectively connected to the second water inlet pipe (241) and the second water outlet pipe (242).

4. The extruder vacuum equipment according to claim 3, characterized in that: The heat exchanger (200) is provided with a first partition (251) and a second partition (252). The first partition (251) separates the heat exchanger (200) into a first zone (261) and a second zone (262). The first zone (261) is located above the second zone (262). The second partition (252) separates the first zone (261) into a water inlet zone (271) and a water outlet zone (272). The second condenser (243) is located in the second zone (262). The second condenser (243) is U-shaped. Two ends of the second condenser (243) are respectively connected to the water inlet zone (271) and the water outlet zone (272). The first air inlet pipe (210) and the first air outlet pipe (220) are respectively connected to the second zone (262).

5. The extruder vacuum equipment according to claim 4, characterized in that: The air inlet of the cold-heat exchanger (200) is lower than the air outlet of the cold-heat exchanger.

6. The extruder vacuum equipment according to claim 5, characterized in that: The cold-heat exchanger (200) is connected to an air blowing pipe (280), and the air blowing pipe (280) is connected to the second zone (262). The connection end of the air blowing pipe (280) and the cold-heat exchanger (200) is higher than the connection end of the first air inlet pipe (210) and the cold-heat exchanger (200). The air blowing pipe (280) is used to blow away the oil stains attached to the second condenser (243) and the inner wall of the cold-heat exchanger (200).

7. The extruder vacuum equipment according to claim 1, characterized in that: An annular partition (310) is provided in the exhaust device (300), and the annular partition (310) divides the inner cavity of the exhaust device (300) into an annular area (311) and a middle area (312). The exhaust device (300) is connected to a second air inlet pipe (330) and a second air outlet pipe (340) respectively, and the second air inlet pipe (330) and the second air outlet pipe (340) are both connected to the middle area (312). The air outlet of the vacuum pump (410) is connected to the second air inlet pipe (330), and the lower end of the second air outlet pipe (340) is connected to the top of the exhaust device (300). The filter assembly (360) is arranged in the second air outlet pipe (340).

8. The extruder vacuum equipment according to claim 7, characterized in that: The third condensation component (350) includes a third water inlet pipe (351), a third water outlet pipe (352) and a third condensation pipe (353). The third condensation pipe (353) is located in the middle area (312). The third water inlet pipe (351) is respectively connected to the annular area (311) and one end of the third condensation pipe (353), and the third water outlet pipe (352) is respectively connected to the annular area (311) and the other end of the third condensation pipe (353).

9. The extruder vacuum equipment according to claim 7, characterized in that: The filter assembly (360) comprises filter cotton (361) and an exhaust fan (362), wherein the filter cotton (361) is located above the exhaust fan (362), and the exhaust fan (362) is used to extract gas out of the exhaust device (300).

10. The extruder vacuum equipment according to claim 7, characterized in that: The exhaust device (300) is connected to an oil return pipe (370), and the oil return pipe (370) is respectively connected to the middle area (312) and the vacuum pump (410).

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