A high-speed mixing and shearing device for mud treatment and its usage method

Abstract

This invention relates to a high-speed mixing and shearing device for mud treatment and its method of use. The device includes a support and separation mechanism (1) and a mixing and shearing mechanism (2). The support and separation mechanism (1) includes a support base (101), an electric telescopic rod (102) is installed on the upper part of one side of the support base (101), and a separation bucket (104) is provided. One end of the separation bucket (104) is rotatably connected to the upper part of the electric telescopic rod (102), and the other end of the separation bucket (104) is rotatably connected to the support base (101). This invention shreds and mixes the mud, thereby achieving secondary mixing of the mud and improving the shredding and mixing effect. The separation bucket in this invention collects the mud after mixing is completed.

Description

Technical Field

[0001] This invention belongs to the technical field of mud treatment equipment, and in particular relates to a high-speed stirring and shearing device for mud treatment and its usage method. Background Technology

[0002] Oil and gas field drilling waste mud is a multi-component steady colloidal suspension system containing clay, weighting materials, various chemical mud treatment agents, and a certain amount of oily waste and drill cuttings. The hydrocarbons, salts, various polymers, sulfonates, and certain metal ions it contains pose a significant threat to the environment. Without treatment, it will inevitably cause serious pollution to the surrounding environment and groundwater of oil and gas fields.

[0003] Currently, most oil and gas field drilling waste mud treatment methods use chemical methods, such as adding flocculants to the waste mud. However, before treatment, the waste mud contains a large number of particulate impurities. In order to facilitate better reaction between the waste mud and the flocculant, the impurity particles in the waste mud are crushed and made smaller to facilitate the reaction. At the same time, the existing mud mixing and shearing devices are not convenient for squeezing out the unreactable impurities after mixing. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned problems and defects by providing a high-speed stirring and shearing device for mud treatment and its usage method.

[0005] The present invention is implemented using the following technical solution.

[0006] A high-speed mixing and shearing device for mud treatment, the device comprising:

[0007] Support and separation mechanism 1 and stirring and shearing mechanism 2;

[0008] The support and separation mechanism 1 includes a support base 101, and an electric telescopic rod 102 is installed on the upper part of one side of the support base 101.

[0009] A separation bucket 104 is provided, one end of which is rotatably connected to the upper part of the electric telescopic rod 102, and the other end of which is rotatably connected to the support base 101.

[0010] An observation plate 105 is installed on the surface of the separation tank 104, and a control panel 106 is installed on the surface of the support base 101.

[0011] The separation barrel 104 is rotatably connected to a threaded rotating rod 109, and the surface of the threaded rotating rod 109 is threadedly connected to a perforated plate 110, which is in contact with the inner wall of the separation barrel 104.

[0012] A perforated plate 111 is installed at the bottom of one side of the separation tank 104;

[0013] A hopper 112 is installed on the other side of the bottom of the separation barrel 104;

[0014] The stirring and shearing mechanism 2 includes a stirring tank 201, which is installed on the top of the separation tank 104, and the bottom of the stirring tank 201 is connected to the separation tank 104.

[0015] The bottom of the mixing tank 201 is equipped with a filter plate and a shearing blade.

[0016] Furthermore, the bottom of the mixing tank 201 of the present invention is equipped with a first filter plate 202 and a second filter plate 203. A first rotating shaft 204 is rotatably connected inside the mixing tank 201 and above the first filter plate 202. A first shearing blade 205 is fixedly connected to the surface of the first rotating shaft 204. A first stirring rod 206 is fixedly connected to the surface of the first rotating shaft 204. A protective shell 207 is installed at the bottom of the first filter plate 202. A second rotating shaft 208 is rotatably connected inside the mixing tank 201 and above the second filter plate 203. A second shearing blade 209 is fixedly connected to the surface of the second rotating shaft 208. A second stirring rod 210 is fixedly connected to the surface of the second rotating shaft 208.

[0017] Furthermore, the surface of the support base 101 of the present invention is equipped with a first collection box 107 adapted to the perforated plate 111, and the surface of the support base 101 is equipped with a second collection box 108 adapted to the discharge hopper 112.

[0018] Furthermore, a feeding plate 113 is slidably connected to the surface of the other side of the bottom of the separation barrel 104 of the present invention, and a first handle 114 is fixedly connected to the surface of the feeding plate 113.

[0019] Furthermore, a first servo motor 115 is mounted on the surface of the separation barrel 104 of the present invention, and the output shaft of the first servo motor 115 passes through the separation barrel 104 and is fixedly connected to one end of the threaded rotating rod 109.

[0020] Furthermore, a blower 116 is installed on the top of the separation tank 104 of the present invention, and an installation shell 117 is installed on one side of the blower 116. A purification column 118 is installed inside the installation shell 117 and is connected to the blower 116. An air inlet hood 119 is installed on the surface of the separation tank 104. A first air guide pipe 120 is installed on the top of the blower 116 and is connected to the air inlet hood 119 at the other end. A second air guide pipe 121 is installed on the surface of the purification column 118 and is connected to the separation tank 104.

[0021] Furthermore, the protective shell 207 of the present invention is rotatably connected to a first bevel gear 211, and the first rotating shaft 204 is fixedly connected to the first bevel gear 211;

[0022] The protective shell 207 is rotatably connected to a second bevel gear 212, and the second bevel gear 212 is fixedly connected to the second rotating shaft 208;

[0023] The protective shell 207 is internally rotatably connected to a third bevel gear 213, which meshes with the first bevel gear 211 and the second bevel gear 212 respectively.

[0024] Furthermore, a second servo motor 214 is mounted on the surface of the protective shell 207 of the present invention, and the output shaft of the second servo motor 214 passes through the protective shell 207 and is fixedly connected to the third bevel gear 213.

[0025] Furthermore, the top of the mixing tank 201 of the present invention is equipped with a feeding hopper 215, and the top of the feeding hopper 215 is rotatably connected to a cover plate 216, and a second handle 217 is installed on the surface of the cover plate 216.

[0026] Furthermore, the top of the mixing tank 201 of the present invention is equipped with a feed pipe 218, and a sealing cap 219 is provided on the surface of the feed pipe 218.

[0027] Furthermore, the bottom of the support base 101 of the present invention is equipped with a plurality of casters 103, and the sides of the casters 103 are provided with brake pads.

[0028] The method of using the device of the present invention includes the following steps:

[0029] The slurry is poured into the feed hopper 215, and the additive is poured into the feed pipe 218. Then, the second servo motor 214 is started. When the second servo motor 214 starts, its output shaft drives the third bevel gear 213 to rotate. The rotation of the third bevel gear 213 drives the second bevel gear 212 and the first bevel gear 211 to rotate, and also causes the second bevel gear 212 and the first bevel gear 211 to rotate in opposite directions. This rotation, through the rotation of the first rotating shaft 204, drives the first shearing blade 205 and the first stirring rod 206 to rotate, thus initially chopping and stirring the slurry. Subsequently, under the action of the first filter disc 202, the slurry falls into the first filter. Below the disk 202, the second rotating shaft 208 rotates, driving the second shear blade 209 and the second stirring rod 210 to chop and stir the mud, thereby achieving secondary stirring of the mud. After the mud is stirred, the separation tank 104 collects it. At this time, the mud will accumulate on one side of the perforated disk 110. Then, the first servo motor 115 is started. The output shaft of the first servo motor 115 drives the threaded rotating rod 109 to rotate. The rotation of the threaded rotating rod 109 drives the perforated disk 110 to move. At this time, the mud will leak out through the perforated plate 111 under the action of the holes on the surface of the perforated disk 110, while the debris that cannot pass through the perforated disk 110 will be discharged from the hopper 112.

[0030] The beneficial effects of the present invention are as follows: (1) The present invention drives the first shear blade and the first stirring rod to rotate by rotating the first rotating shaft, which can initially chop and stir the mud. Then, under the action of the first filter plate, the mud will fall below the first filter plate. At this time, the second rotating shaft drives the second shear blade and the second stirring rod to chop and stir the mud, thereby realizing secondary stirring of the mud and improving the chopping and stirring effect.

[0031] (2) By setting up a separation bucket, the present invention collects the mud after the mud is stirred. At this time, the mud will accumulate on one side of the orifice plate. Then the threaded rod rotates and drives the orifice plate to move. At this time, the mud will leak out through the orifice plate under the action of the holes on the surface of the orifice plate, while the debris that cannot pass through the orifice plate will be discharged from the hopper.

[0032] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0033] Figure 1 This is a first-view perspective perspective view of a high-speed stirring and shearing device for mud treatment according to the present invention.

[0034] Figure 2 This is a schematic diagram of the support and separation mechanism in a high-speed stirring and shearing device for mud treatment according to the present invention;

[0035] Figure 3This is a partial structural cross-sectional view of the support and separation mechanism in a high-speed stirring and shearing device for mud treatment according to the present invention.

[0036] Figure 4 This is a cross-sectional view of the stirring and shearing mechanism in a high-speed stirring and shearing device for mud treatment according to the present invention.

[0037] Figure 5 This is a schematic diagram of a first partial structure of the stirring and shearing mechanism in a high-speed stirring and shearing device for mud treatment according to the present invention;

[0038] Figure 6 This is a second partial structural cross-sectional view of the stirring and shearing mechanism in a high-speed stirring and shearing device for mud treatment according to the present invention.

[0039] Explanation of the labels in the diagram:

[0040] 1. Support and separation mechanism; 101. Support base; 102. Electric telescopic rod; 103. Casters; 104. Separation tank; 105. Observation plate; 106. Control panel; 107. First collection box; 108. Second collection box; 109. Threaded rotating rod; 110. Perforated plate; 111. Perforated plate; 112. Discharge hopper; 113. Discharge plate; 114. First handle; 115. First servo motor; 116. Blower; 117. Mounting shell; 118. Purification column; 119. Air inlet hood; 120. First air guide pipe; 121. Second air guide pipe 1. Air pipe; 2. Stirring and shearing mechanism; 201. Stirring tank; 202. First filter plate; 203. Second filter plate; 204. First rotating shaft; 205. First shearing blade; 206. First stirring rod; 207. Protective shell; 208. Second rotating shaft; 209. Second shearing blade; 210. Second stirring rod; 211. First bevel gear; 212. Second bevel gear; 213. Third bevel gear; 214. Second servo motor; 215. Feed hopper; 216. Cover plate; 217. Second handle; 218. Feed pipe; 219. Sealing cover. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] Example:

[0043] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 .

[0044] A high-speed stirring and shearing device for mud treatment includes: a support and separation mechanism 1 and a stirring and shearing mechanism 2.

[0045] The support and separation mechanism 1 includes a support base 101. Two electrically operated telescopic rods 102 are mounted on the surface of the support base 101. A separation tank 104 is rotatably connected to the surface of each of the electrically operated telescopic rods 102, and the separation tank 104 is rotatably connected to one side of the support base 101. An observation plate 105 (preferably made of transparent material) is mounted on the surface of the separation tank 104. A control panel 106 is mounted on the surface of the support base 101. A threaded rotating rod 109 is rotatably connected inside the separation tank 104, and a perforated plate 11 is threadedly connected to the surface of the threaded rotating rod 109. 0, and the perforated plate 110 is in contact with the inner wall of the separation tank 104. A perforated plate 111 is installed on one side of the bottom of the separation tank 104, and a hopper 112 is installed on the other side of the bottom of the separation tank 104. After the mud is stirred, the separation tank 104 collects it. At this time, the mud will accumulate on one side of the perforated plate 110. Then the threaded rotating rod 109 rotates to drive the perforated plate 110 to move. At this time, the mud will leak out through the perforated plate 111 under the action of the holes on the surface of the perforated plate 110, while the debris that cannot pass through the perforated plate 110 will be discharged from the hopper 112.

[0046] The stirring and shearing mechanism 2 includes a stirring tank 201, which is mounted on top of a separation tank 104, with its bottom connected to the separation tank 104. A first filter plate 202 and a second filter plate 203 are mounted on the bottom of the stirring tank 201. A first rotating shaft 204 is rotatably connected inside the stirring tank 201 and above the first filter plate 202. A first shearing blade 205 is fixedly connected to the surface of the first rotating shaft 204, and a first stirring rod 206 is fixedly connected to the surface of the first rotating shaft 204. A protective shell 207 is mounted on the bottom of the first filter plate 202. The stirring tank 201 is rotatably connected to the second filter plate 203. A second rotating shaft 208 is rotatably connected above the filter disc 203. A second shearing blade 209 is fixedly connected to the surface of the second rotating shaft 208, and a second stirring rod 210 is fixedly connected to the surface of the second rotating shaft 208. The rotation of the first rotating shaft 204 drives the first shearing blade 205 and the first stirring rod 206 to rotate, which can initially chop and stir the mud. Subsequently, under the action of the first filter disc 202, the mud will fall below the first filter disc 202. At this time, the rotation of the second rotating shaft 208 drives the second shearing blade 209 and the second stirring rod 210 to chop and stir the mud, thereby realizing secondary stirring of the mud and improving the chopping and stirring effect.

[0047] Specifically, the bottom of the support base 101 is equipped with multiple casters 103, and the sides of the casters 103 are provided with brake pads.

[0048] In a specific embodiment of the present invention, the universal wheels 103 facilitate the movement of the device, thereby reducing the labor intensity of the workers moving the device. The brake pads facilitate the limiting of the universal wheels 103.

[0049] Specifically, a first collection box 107 adapted to the perforated plate 111 is installed on the surface of the support base 101, and a second collection box 108 adapted to the feed hopper 112 is installed on the surface of the support base 101.

[0050] In a specific embodiment of the present invention, the perforated plate 111 facilitates the collection of the treated mud, and the second collection box 108 facilitates the collection of the treated impurities.

[0051] Specifically, a feeding plate 113 is slidably connected to the surface of the other side of the bottom of the separation barrel 104, and a first handle 114 is fixedly connected to the surface of the feeding plate 113.

[0052] In a specific embodiment of the present invention, the separation bucket 104 can be closed by the setting of the feeding plate 113, and the feeding plate 113 can be moved by the setting of the first handle 114, thereby facilitating the opening and closing of the feeding hopper 112.

[0053] Specifically, a first servo motor 115 is mounted on the surface of the separation barrel 104, and the output shaft of the first servo motor 115 passes through the separation barrel 104 and is fixedly connected to one end of the threaded rotating rod 109.

[0054] In a specific embodiment of the present invention, by setting the first servo motor 115, when the first servo motor 115 is started, its output shaft drives the threaded rotating rod 109 to rotate.

[0055] Specifically, a blower 116 is installed on the top of the separation tank 104, and a mounting shell 117 is installed on one side of the blower 116. A purification column 118 is installed inside the mounting shell 117 and is connected to the blower 116. An air inlet hood 119 is installed on the surface of the separation tank 104. A first air guide pipe 120 is installed on the top of the blower 116 and is connected to the air inlet hood 119 at the other end. A second air guide pipe 121 is installed on the surface of the purification column 118 and is connected to the separation tank 104.

[0056] In a specific embodiment of the present invention, when the mud is reacting, the blower 116 generates air pressure and draws the gas inside the separation tank 104 through the second air guide pipe 121 and the air inlet hood 119, and then delivers the gas to the purification column 118. At this time, the purification column 118 filters the gas, and the filtered gas enters the interior of the separation tank 104 through the first air guide pipe 120.

[0057] Specifically, a first bevel gear 211 is rotatably connected inside the protective shell 207, and a first rotating shaft 204 is fixedly connected to the first bevel gear 211. A second bevel gear 212 is rotatably connected inside the protective shell 207, and the second bevel gear 212 is fixedly connected to the second rotating shaft 208. A third bevel gear 213 is rotatably connected inside the protective shell 207, and the third bevel gear 213 meshes with the first bevel gear 211 and the second bevel gear 212 respectively.

[0058] In a specific embodiment of the present invention, when the third bevel gear 213 rotates, it will drive the second bevel gear 212 and the first bevel gear 211 to rotate, and cause the second bevel gear 212 and the first bevel gear 211 to rotate in opposite directions.

[0059] Specifically, a second servo motor 214 is mounted on the surface of the protective shell 207, and the output shaft of the second servo motor 214 passes through the protective shell 207 and is fixedly connected to the third bevel gear 213.

[0060] In a specific embodiment of the present invention, by setting the second servo motor 214, when the second servo motor 214 is started, its output shaft drives the third bevel gear 213 to rotate.

[0061] Specifically, a feed hopper 215 is installed on the top of the mixing tank 201, and a cover plate 216 is rotatably connected to the top of the feed hopper 215. A second handle 217 is installed on the surface of the cover plate 216.

[0062] In a specific embodiment of the present invention, the feeding hopper 215 facilitates the pouring of mud into the mixing tank 201, the cover plate 216 facilitates the closing of the feeding hopper 215, and the second handle 217 facilitates the movement of the cover plate 216.

[0063] Specifically, a feed pipe 218 is installed on the top of the mixing tank 201, and a sealing cap 219 is provided on the surface of the feed pipe 218.

[0064] In a specific embodiment of the present invention, the feed pipe 218 facilitates the addition of additives into the mixing tank 201, and the sealing cap 219 facilitates the closure of the feed pipe 218.

[0065] A method of using a high-speed mixing and shearing device for mud treatment includes the following steps:

[0066] In use, the slurry is first poured into the feed hopper 215, and the additive is poured into the feed pipe 218. Then, the second servo motor 214 is started. When the second servo motor 214 starts, its output shaft drives the third bevel gear 213 to rotate. When the third bevel gear 213 rotates, it drives the second bevel gear 212 and the first bevel gear 211 to rotate, and the second bevel gear 212 and the first bevel gear 211 rotate in opposite directions. Through the rotation of the first rotating shaft 204, the first shearing blade 205 and the first stirring rod 206 are driven to rotate, which can initially chop and stir the slurry. Then, under the action of the first filter plate 202, the slurry falls into the first filter plate 202. Below 02, the second rotating shaft 208 rotates, driving the second shearing blade 209 and the second stirring rod 210 to chop and stir the mud, thereby achieving secondary stirring of the mud and improving the chopping and stirring effect. After the mud is stirred, the separation tank 104 collects it. At this time, the mud will accumulate on one side of the perforated plate 110. Then, the first servo motor 115 is started. The output shaft of the first servo motor 115 drives the threaded rotating rod 109 to rotate. The rotation of the threaded rotating rod 109 drives the perforated plate 110 to move. At this time, the mud will leak out through the perforated plate 111 under the action of the holes on the surface of the perforated plate 110, while the debris that cannot pass through the perforated plate 110 will be discharged from the hopper 112.

[0067] The above descriptions are merely some specific embodiments of the present invention. Commonly known details or common knowledge in the solutions are not described in detail here (including but not limited to abbreviations, acronyms, and units conventionally used in the art). It should be noted that the above embodiments do not limit the present invention in any way. For those skilled in the art, any technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A high-speed mixing and shearing device for mud treatment, characterized in that, The device comprises: Support and separation mechanism (1) and stirring shear mechanism (2); The support and separation mechanism (1) comprises a support base (101), and an electric telescopic rod (102) is arranged on the upper side of one side of the support base (101); A separation barrel (104) is arranged, one end of the separation barrel (104) is rotatably connected to the upper portion of the electric telescopic rod (102), and the other end of the separation barrel (104) is rotatably connected to the support base (101); An observation plate (105) is mounted on the surface of the separation barrel (104), and a control panel (106) is mounted on the surface of the support base (101); A threaded rotating rod (109) is rotatably connected in the separation barrel (104), a hole disc (110) is threadedly connected to the surface of the threaded rotating rod (109), and the hole disc (110) is in contact connection with the inner wall of the separation barrel (104); A hole plate (111) is arranged on the bottom of one side of the separation barrel (104); A lower hopper (112) is arranged on the other side of the bottom of the separation barrel (104); The stirring shear mechanism (2) comprises a stirring barrel (201), which is arranged on the top of the separation barrel (104), and the bottom of the stirring barrel (201) is in communication with the separation barrel (104); A filter disc and a shear leaf are arranged on the bottom of the stirring barrel (201); A first filter disc (202) is arranged in the middle of the stirring barrel (201), a second filter disc (203) is arranged on the bottom of the stirring barrel (201), a first rotating shaft (204) is rotatably connected in the stirring barrel (201) above the first filter disc (202), a first shear leaf (205) is fixedly connected to the surface of the first rotating shaft (204), a first stirring rod (206) is fixedly connected to the surface of the first rotating shaft (204), a protection shell (207) is arranged on the bottom of the first filter disc (202), a second rotating shaft (208) is rotatably connected in the stirring barrel (201) above the second filter disc (203), a second shear leaf (209) is fixedly connected to the surface of the second rotating shaft (208), and a second stirring rod (210) is fixedly connected to the surface of the second rotating shaft (208); The inside of the protection shell (207) is rotatably connected with a first bevel gear (211), and the first rotating shaft (204) is fixedly connected with the first bevel gear (211); the inside of the protection shell (207) is rotatably connected with a second bevel gear (212), and the second bevel gear (212) is fixedly connected with the second rotating shaft (208); the inside of the protection shell (207) is rotatably connected with a third bevel gear (213), and the third bevel gear (213) is meshed with the first bevel gear (211) and the second bevel gear (212) respectively; the surface of the protection shell (207) is provided with a second servo motor (214), and the output shaft of the second servo motor (214) penetrates the protection shell (207) and is fixedly connected with the third bevel gear (213); the top of the stirring barrel (201) is provided with a feeding hopper (215), the top of the feeding hopper (215) is rotatably connected with a cover plate (216), and the surface of the cover plate (216) is provided with a second handle (217); the top of the stirring barrel (201) is provided with a feeding pipe (218), and the surface of the feeding pipe (218) is provided with a sealing cover (219); The use method of the high-speed stirring and shearing device for mud treatment comprises the following steps: The mud is poured into the inside of the feeding hopper (215), and the additive is poured into the inside of the feeding pipe (218), then the second servo motor (214) is started, when the second servo motor (214) is started, the output shaft of the second servo motor (214) drives the third bevel gear (213) to rotate, when the third bevel gear (213) rotates, the second bevel gear (212) and the first bevel gear (211) are driven to rotate, and the second bevel gear (212) and the first bevel gear (211) are driven to rotate in opposite directions, the first shearing blade (205) and the first stirring rod (206) are driven to rotate through the rotation of the first rotating shaft (204), the mud can be preliminarily cut and stirred, then under the action of the first filter disc (202), the mud falls below the first filter disc (202), at this time, the second rotating shaft (208) drives the second shearing blade (209) and the second stirring rod (210) to cut and stir the mud, so that the mud is stirred twice, after the mud is stirred, the separation barrel (104) collects the mud, at this time, the mud is accumulated on one side of the hole disc (110), then the first servo motor (115) is started, the output shaft of the first servo motor (115) drives the threaded rotating rod (109) to rotate, the threaded rotating rod (109) drives the hole disc (110) to move, at this time, the mud leaks out through the hole plate (111) under the action of the holes on the surface of the hole disc (110), and the sundries that cannot pass through the hole disc (110) are discharged from the discharge hopper (112).

2. The high-speed mixing and shearing device for mud treatment according to claim 1, characterized in that, The surface of the supporting base (101) is provided with a first collection box (107) matched with the hole plate (111), and the surface of the supporting base (101) is provided with a second collection box (108) matched with the discharge hopper (112).

3. The high speed mixing and shearing device for slurry treatment according to claim 1, wherein The surface of the other side of the bottom of the separation barrel (104) is slidably connected with a discharging plate (113), and the surface of the discharging plate (113) is fixedly connected with a first handle (114).

4. The high speed mixing and shearing device for slurry treatment according to claim 1, wherein A first servo motor (115) is mounted on the surface of the separation barrel (104), and the output shaft of the first servo motor (115) penetrates the separation barrel (104) and is fixedly connected with one end of the threaded rotating rod (109).

5. The high speed mixing and shearing device for slurry treatment according to claim 1, wherein An air blower (116) is mounted on the top of the separation barrel (104), one side of the air blower (116) is mounted with a mounting shell (117), the inside of the mounting shell (117) is mounted with a purification column (118), the purification column (118) is communicated with the air blower (116), an air inlet cover (119) is mounted on the surface of the separation barrel (104), the top of the air blower (116) is mounted with a first air guide pipe (120), the other end of the first air guide pipe (120) is communicated with the air inlet cover (119), the surface of the purification column (118) is mounted with a second air guide pipe (121), and the second air guide pipe (121) is communicated with the separation barrel (104).

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