Chemical pharmaceutical wastewater treatment device and treatment method

Abstract

The invention discloses a chemical pharmaceutical wastewater treatment device and a treatment method, and relates to the technical field of sewage treatment, and the technical scheme is as follows: the method comprises the following steps: S1, impurity removal treatment: sewage firstly enters a grille decontamination device to remove large-particle solid impurities, and then flows into an adjusting tank to adjust the water quantity and the water quality; s2, coagulation and precipitation treatment: enabling the sewage flowing out of the regulating tank to enter a coagulation reaction tank, adding a composite coagulant, and reacting for a specific time under a stirring condition, so that colloidal substances and part of organic matters are coagulated and precipitated; s3, biological membrane reaction treatment: the sewage subjected to coagulating sedimentation enters a biological membrane reactor. According to the chemical pharmaceutical wastewater treatment device, the filtering holes are adjusted, so that the filtering effect on solid impurities in chemical pharmaceutical wastewater is effectively guaranteed, meanwhile, various pollutants in pharmaceutical wastewater can be effectively removed, the treated wastewater reaches the national specified discharge standard, and the chemical pharmaceutical wastewater treatment device has the remarkable advantages of being high in treatment efficiency, low in cost, easy and convenient to operate, environmentally friendly and the like.

Description

Technical Field

[0001] The invention relates to sewage treatment technology, and in particular to a chemical pharmaceutical wastewater treatment device and a treatment method. Background Art

[0002] The pharmaceutical industry generates a large amount of wastewater during the production process. The wastewater contains complex components such as organic pollutants, chemical synthetics, heavy metal ions and biologically active substances. If these pollutants are discharged directly without effective treatment, they will cause serious harm to the environment and human health. The current common wastewater treatment methods have problems such as low treatment efficiency, high cost, and poor removal effect on certain difficult-to-degrade pollutants. For example, traditional biological treatment methods are difficult to completely decompose and remove special organic matter and heavy metals in chemical synthetic drugs; when treating biopharmaceutical wastewater, chemical treatment methods may cause secondary pollution due to improper addition of agents and cannot effectively degrade biological macromolecules. Therefore, there is an urgent need for an efficient, comprehensive and environmentally friendly pharmaceutical wastewater treatment device and treatment method. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a chemical pharmaceutical wastewater treatment device and treatment method.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A method for treating wastewater from chemical pharmaceutical production comprises the following steps:

[0006] S1. Impurity removal treatment: The sewage first enters the screen decontamination device to remove large solid impurities, and then flows into the regulating tank to adjust the water volume and water quality;

[0007] S2, coagulation and sedimentation treatment: the sewage flowing out of the regulating tank enters the coagulation reaction tank, and a composite coagulant is added to react for a specific time under stirring conditions to cause the colloidal substances and some organic matter to coagulate and precipitate;

[0008] S3, biofilm reaction treatment: After coagulation and sedimentation, the sewage enters the biofilm reactor. Under aerobic conditions, aerobic microorganisms on the biofilm degrade the organic pollutants in the sewage;

[0009] S4, organic matter decomposition treatment: the effluent from the biofilm reactor enters the anaerobic fermentation tank, where anaerobic microorganisms decompose the remaining difficult-to-degrade organic matter in an oxygen-free environment;

[0010] S5. Organic matter adsorption treatment: The effluent from the anaerobic fermentation tank enters the activated carbon adsorption tower to adsorb residual organic pollutants and trace heavy metals;

[0011] S6. Standard emission detection and treatment: Finally, the sewage after activated carbon adsorption enters the ion exchange resin device to remove heavy metal ions, and the treated water meets the discharge standards.

[0012] Furthermore, when the grid decontamination device in the S1 impurity removal process is used, the pharmaceutical wastewater is first introduced into the grid decontamination device, and the grid spacing of the grid decontamination device can be automatically adjusted according to the actual size of the solid particles in the wastewater.

[0013] Furthermore, during the S2 coagulation and sedimentation treatment, the sewage stays in the regulating tank for half an hour to fully adjust the water quantity and quality.

[0014] Furthermore, during the S3 biofilm reaction treatment, in the coagulation reaction tank, the mass ratio of polyaluminium chloride, polyacrylamide and chitosan in the composite coagulant is added according to the reaction time.

[0015] A chemical pharmaceutical wastewater treatment device, which is applicable to the chemical pharmaceutical wastewater treatment method described above, wherein the grid decontamination device in the S1 impurity removal process comprises a body;

[0016] It also includes a filtering mechanism, which is installed inside the machine body and is used to filter solid impurities from chemical pharmaceutical wastewater. The filtering mechanism includes a first filtering cartridge fixedly connected to the inside of the machine body, and a second filtering cartridge is rotatably connected inside the first filtering cartridge;

[0017] A cleaning mechanism, the cleaning mechanism is installed inside the second filter cartridge, and is used to clean the inside of the second filter cartridge. The cleaning mechanism includes a connecting rod rotatably connected to the inside of the second filter cartridge and a cleaning shovel fixedly connected to the connecting rod in an array, and one side of the cleaning shovel abuts against the inside of the second filter cartridge;

[0018] A pushing mechanism, which is installed below the machine body and is used to discharge the filtered solid impurities. The pushing mechanism includes a feeding pipe fixedly connected to the bottom of the machine body, a spiral pushing rod is rotatably connected inside the feeding pipe, and a transmission mechanism is provided between one end of the pushing mechanism and the cleaning mechanism;

[0019] The driving mechanism is installed on one side of the machine body and is used to output power to the filtering mechanism and the cleaning mechanism. A linkage mechanism is provided between the driving mechanism and the filtering mechanism and the cleaning mechanism.

[0020] Furthermore, the driving mechanism includes a motor frame fixedly connected to one side of the machine body, the motor frame is fixedly connected to a driving motor, and an output shaft of the driving motor is fixedly connected to a first bevel gear.

[0021] Furthermore, the filtering mechanism also includes a filtering groove arrayed on the first filtering cylinder, and a plurality of filtering holes with different diameters arrayed on the second filtering cylinder, and the plurality of filtering holes are respectively indirectly connected to the filtering groove.

[0022] Furthermore, the transmission mechanism includes a first pulley fixedly connected to one end of the connecting rod, and one end of the spiral pushing rod is fixedly connected to a second pulley corresponding to the first pulley, and the second pulley is connected to the external transmission of the first pulley by the same belt.

[0023] Furthermore, the linkage mechanism includes a transmission rod rotatably connected to one side of the machine body, and the transmission rod is respectively fixedly connected with a first gear, a second gear and a second bevel gear, one side of the second bevel gear is meshed with the first bevel gear for transmission, and a first one-way gear is fixedly connected to the connecting rod, and one side of the first one-way gear is meshed and rotated with the first gear, and one side of the second filter cylinder is fixedly connected with a transmission sleeve, and a second one-way gear is fixedly connected to the transmission sleeve, and one side of the second one-way gear is meshed with the second gear for transmission, and the connecting rod is movably sleeved inside the transmission sleeve.

[0024] Furthermore, a water inlet is provided at one end of the body, a water inlet pipe is fixedly connected to the water inlet, a first control valve is fixedly connected to the water inlet pipe, a plurality of drain outlets are provided on one side of the body, a plurality of drain outlets are fixedly connected to a plurality of drain pipes, a second control valve is fixedly connected to the plurality of drain pipes, and a plurality of support columns are fixedly connected to the bottom of the body.

[0025] The present invention effectively ensures the filtering effect of solid impurities in chemical pharmaceutical wastewater by adjusting the filter holes, and can effectively remove various pollutants in pharmaceutical wastewater, so that the treated wastewater meets the national emission standards. It has the significant advantages of high treatment efficiency, low cost, simple operation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A flowchart of the steps of a chemical pharmaceutical wastewater treatment method proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the overall top view of a three-dimensional structure of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the overall bottom-up stereoscopic structure of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of a partial cross-section top view of a three-dimensional structure of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0030] Figure 5 This is a top-down perspective structural diagram of a filtering mechanism and a pushing mechanism of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0031] Figure 6 A schematic diagram of a partial cross-sectional top view of a three-dimensional structure of a cleaning mechanism and a first filter cartridge of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0032] Figure 7 This is a top-down perspective structural diagram of a first filter cartridge of a chemical pharmaceutical wastewater treatment device proposed by the present invention;

[0033] Figure 8 The present invention provides a schematic top view of a partially sectional three-dimensional structure of a material pushing mechanism of a chemical pharmaceutical wastewater treatment device.

[0034] Description of reference numerals:

[0035] 1. Machine body; 2. First filter cartridge; 3. Second filter cartridge; 4. Transmission sleeve; 5. Connecting rod; 6. Cleaning shovel; 7. First one-way gear; 8. Transmission rod; 9. First gear; 10. Second gear; 11. Second one-way gear; 12. Feeding pipe; 13. Screw push rod; 14. Second pulley; 15. First pulley; 16. Belt; 17. Motor frame; 18. Driving motor; 19. First bevel gear; 20. Second bevel gear. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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 are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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, rather than indicating or implying 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 limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example 1

[0040] Reference Figure 1 :A method for treating wastewater from chemical pharmaceutical production comprises the following steps:

[0041] S1. Impurity removal treatment: The sewage first enters the screen decontamination device to remove large solid impurities, and then flows into the regulating tank to adjust the water volume and water quality;

[0042] S2, coagulation and sedimentation treatment: the sewage flowing out of the regulating tank enters the coagulation reaction tank, and a composite coagulant is added to react for a specific time under stirring conditions to cause the colloidal substances and some organic matter to coagulate and precipitate;

[0043] S3, biofilm reaction treatment: After coagulation and sedimentation, the sewage enters the biofilm reactor. Under aerobic conditions, aerobic microorganisms on the biofilm degrade the organic pollutants in the sewage;

[0044] S4, organic matter decomposition treatment: the effluent from the biofilm reactor enters the anaerobic fermentation tank, where anaerobic microorganisms decompose the remaining difficult-to-degrade organic matter in an oxygen-free environment;

[0045] S5. Organic matter adsorption treatment: The effluent from the anaerobic fermentation tank enters the activated carbon adsorption tower to adsorb residual organic pollutants and trace heavy metals;

[0046] S6. Standard emission detection and treatment: Finally, the sewage after activated carbon adsorption enters the ion exchange resin device to remove heavy metal ions, and the treated water meets the discharge standards.

[0047] In the present invention, when the grid decontamination device in the S1 impurity removal process is used, the pharmaceutical wastewater is first introduced into the grid decontamination device, and the grid spacing of the grid decontamination device can be automatically adjusted according to the actual size of the solid particles in the wastewater.

[0048] In the present invention, during the S2 coagulation and sedimentation treatment, the sewage stays in the regulating tank for half an hour to fully adjust the water quantity and water quality.

[0049] In the present invention, during the S3 biofilm reaction treatment, in the coagulation reaction tank, the mass ratio of polyaluminium chloride, polyacrylamide and chitosan in the composite coagulant is added according to the reaction time.

[0050] Working principle: During actual operation, pharmaceutical wastewater is introduced into the screen decontamination device. The screen spacing can adjust the filter hole size according to the size of solid particles in the wastewater. The wastewater stays in the regulating tank for half an hour to fully adjust the water volume and quality. In the coagulation reaction tank, the mass ratio of polyaluminum chloride, polyacrylamide and chitosan in the composite coagulant is added according to the reaction time.

[0051] Example 2

[0052] Reference Figure 2-8 : A chemical pharmaceutical wastewater treatment device, which is applicable to the above-mentioned chemical pharmaceutical wastewater treatment method, S1. The grid decontamination device in the impurity removal treatment includes a body 1;

[0053] It also includes a filtering mechanism, which is installed inside the body 1 and is used to filter solid impurities from chemical pharmaceutical wastewater. The filtering mechanism includes a first filter cartridge 2 fixedly connected to the inside of the body 1, and a second filter cartridge 3 is rotatably connected inside the first filter cartridge 2;

[0054] A cleaning mechanism is installed inside the second filter cartridge 3 and is used to clean the inside of the second filter cartridge 3. The cleaning mechanism includes a connecting rod 5 rotatably connected to the inside of the second filter cartridge 3 and a cleaning shovel 6 fixedly connected to the connecting rod 5 in an array. One side of the cleaning shovel 6 abuts against the inside of the second filter cartridge 3.

[0055] The pushing mechanism is installed below the machine body 1 and is used to discharge the filtered solid impurities. The pushing mechanism includes a feeding pipe 12 fixedly connected to the bottom of the machine body 1, and a spiral pushing rod 13 is rotatably connected inside the feeding pipe 12. A transmission mechanism is provided between one end of the pushing mechanism and the cleaning mechanism.

[0056] The driving mechanism is installed on one side of the machine body 1 and is used to output power to the filtering mechanism and the cleaning mechanism. A linkage mechanism is provided between the driving mechanism and the filtering mechanism and the cleaning mechanism.

[0057] In the present invention, the driving mechanism includes a motor frame 17 fixedly connected to one side of the machine body 1 , the motor frame 17 is fixedly connected to a driving motor 18 , and the output shaft of the driving motor 18 is fixedly connected to a first bevel gear 19 .

[0058] In the present invention, the filtering mechanism also includes a filtering groove arrayed on the first filtering cylinder 2, and a plurality of filtering holes with different diameters arrayed on the second filtering cylinder 3, and the plurality of filtering holes are respectively indirectly connected to the filtering grooves.

[0059] In the present invention, the transmission mechanism includes a first pulley 15 fixedly connected to one end of the connecting rod 5, and a second pulley 14 is fixedly connected to one end of the spiral push rod 13 corresponding to the first pulley 15. The second pulley 14 and the first pulley 15 are externally connected by the same belt 16.

[0060] In the present invention, the linkage mechanism includes a transmission rod 8 rotatably connected to one side of the body 1, and the transmission rod 8 is respectively fixedly connected to the first gear 9, the second gear 10 and the second bevel gear 20, one side of the second bevel gear 20 is meshed with the first bevel gear 19 for transmission, the connecting rod 5 is fixedly connected to the first one-way gear 7, one side of the first one-way gear 7 is meshed and rotated with the first gear 9, one side of the second filter cartridge 3 is fixedly connected to the transmission sleeve 4, the transmission sleeve 4 is fixedly connected to the second one-way gear 11, one side of the second one-way gear 11 is meshed with the second gear 10 for transmission, and the connecting rod 5 is movably sleeved inside the transmission sleeve 4.

[0061] In the present invention, a water inlet is provided at one end of the body 1, a water inlet pipe is fixedly connected to the water inlet, a first control valve is fixedly connected to the water inlet pipe, a plurality of drain outlets are provided on one side of the body 1, a plurality of drain pipes are fixedly connected to the plurality of drain outlets, a second control valve is fixedly connected to the plurality of drain pipes respectively, and a plurality of support columns are fixedly connected to the bottom of the body 1.

[0062] Working principle: during use, when it is necessary to adjust the size of the filter hole, the driving motor 18 is started in reverse, and the first bevel gear 19 is driven to rotate by the driving motor 18 when it is started in reverse. The reverse rotation of the first bevel gear 19 drives the transmission rod 8 to rotate through the second bevel gear 20. The rotation of the transmission rod 8 drives the rotation of the first gear 9 and the second gear 10. The synchronous rotation of the first gear 9 and the second gear 10 meshes and rotates with the first one-way gear 7 and the second one-way gear 11 respectively. Since the meshing rotation directions of the first one-way gear 7 and the second one-way gear 11 and the connecting rod 5 and the transmission sleeve 4 are opposite, when the first one-way gear 7 rotates in reverse, it does not mesh and rotate with the connecting rod 5, so that the connecting rod 5 remains stationary. At the same time, the reverse rotation of the second one-way gear 11 drives the transmission sleeve 4 to rotate, and the rotation of the transmission sleeve 4 drives the second filter cartridge 3 to rotate, and the filter hole is adjusted by the rotation of the second filter cartridge 3.

[0063] However, when the filter holes need to be cleaned, the driving motor 18 is started in the forward direction, driving the first bevel gear 19 to rotate forward, thereby driving the transmission rod 8 to rotate through the second bevel gear 20, thereby driving the connecting rod 5 to rotate, and the rotation of the connecting rod 5 drives the cleaning shovel 6 to rotate, and the rotation of the cleaning shovel 6 cleans the filter holes inside the second filter cylinder 3, and at the same time drives the rotation of the first pulley 15, and the rotation of the first pulley 15 drives the rotation of the second pulley 14 through the belt 16, and the rotation of the second pulley 14 drives the spiral push rod 13 to rotate, and the solid impurities filtered out by the cleaning are pushed for processing through the rotation of the spiral push rod 13.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for treating wastewater from chemical pharmaceutical production, characterized in that: The following steps are involved: S1. Impurity removal treatment: The sewage first enters the screen decontamination device to remove large solid impurities, and then flows into the regulating tank to adjust the water volume and water quality; S2, coagulation and sedimentation treatment: the sewage flowing out of the regulating tank enters the coagulation reaction tank, and a composite coagulant is added to react for a specific time under stirring conditions to cause the colloidal substances and some organic matter to coagulate and precipitate; S3, biofilm reaction treatment: After coagulation and sedimentation, the sewage enters the biofilm reactor. Under aerobic conditions, aerobic microorganisms on the biofilm degrade the organic pollutants in the sewage; S4, organic matter decomposition treatment: the effluent from the biofilm reactor enters the anaerobic fermentation tank, where anaerobic microorganisms decompose the remaining difficult-to-degrade organic matter in an oxygen-free environment; S5. Organic matter adsorption treatment: The effluent from the anaerobic fermentation tank enters the activated carbon adsorption tower to adsorb residual organic pollutants and trace heavy metals; S6. Standard emission detection and treatment: Finally, the sewage after activated carbon adsorption enters the ion exchange resin device to remove heavy metal ions, and the treated water meets the discharge standards.

2. A method for treating wastewater from chemical pharmaceutical production according to claim 1, characterized in that: When the grid decontamination device in the S1 impurity removal process is used, the pharmaceutical wastewater is first introduced into the grid decontamination device, and the grid spacing of the grid decontamination device can be automatically adjusted according to the actual size of the solid particles in the wastewater.

3. A method for treating wastewater from chemical pharmaceutical production according to claim 1, characterized in that: During the S2 coagulation and sedimentation treatment, the sewage stays in the regulating tank for half an hour to fully adjust the water quantity and quality.

4. A method for treating wastewater from chemical pharmaceutical production according to claim 1, characterized in that: During the S3 biofilm reaction treatment, in the coagulation reaction tank, the mass ratio of polyaluminium chloride, polyacrylamide and chitosan in the composite coagulant is added according to the reaction time.

5. A chemical pharmaceutical wastewater treatment device, which is applicable to a chemical pharmaceutical wastewater treatment method according to any one of claims 1 to 4, characterized in that: The grid decontamination device in the S1 impurity removal process comprises a body (1); It also comprises a filtering mechanism, which is installed inside the machine body (1) and is used to filter solid impurities from chemical pharmaceutical wastewater, and the filtering mechanism comprises a first filtering cartridge (2) fixedly connected to the inside of the machine body (1), and a second filtering cartridge (3) is rotatably connected inside the first filtering cartridge (2); a cleaning mechanism, the cleaning mechanism being installed inside the second filter cartridge (3) and being used for cleaning the inside of the second filter cartridge (3), the cleaning mechanism comprising a connecting rod (5) rotatably connected to the inside of the second filter cartridge (3) and a cleaning shovel (6) fixedly connected to the connecting rod (5) in an array, one side of the cleaning shovel (6) being in contact with the inside of the second filter cartridge (3); A pushing mechanism, the pushing mechanism being installed below the machine body (1) and being used for discharging solid impurities after filtration, the pushing mechanism comprising a feeding pipe (12) fixedly connected to the bottom of the machine body (1), a spiral pushing rod (13) being rotatably connected inside the feeding pipe (12), and a transmission mechanism being provided between one end of the pushing mechanism and the cleaning mechanism; A driving mechanism is installed on one side of the machine body (1) and is used to output power to the filtering mechanism and the cleaning mechanism. A linkage mechanism is provided between the driving mechanism and the filtering mechanism and the cleaning mechanism.

6. A chemical pharmaceutical wastewater treatment device according to claim 5, characterized in that: The driving mechanism comprises a motor frame (17) fixedly connected to one side of the machine body (1), the motor frame (17) being fixedly connected to a driving motor (18), and the output shaft of the driving motor (18) being fixedly connected to a first bevel gear (19).

7. A chemical pharmaceutical wastewater treatment device according to claim 5, characterized in that: The filtering mechanism also includes a filtering groove arranged in an array on the first filtering cylinder (2), and a plurality of filtering holes with different diameters arranged in an array on the second filtering cylinder (3), wherein the plurality of filtering holes are respectively indirectly connected to the filtering groove.

8. A chemical pharmaceutical wastewater treatment device according to claim 5, characterized in that: The transmission mechanism comprises a first pulley (15) fixedly connected to one end of the connecting rod (5); one end of the spiral push rod (13) is fixedly connected to a second pulley (14) corresponding to the first pulley (15); the second pulley (14) and the first pulley (15) are connected to the external transmission via the same belt (16).

9. A chemical pharmaceutical wastewater treatment device according to claim 5, characterized in that: The linkage mechanism comprises a transmission rod (8) rotatably connected to one side of the machine body (1); the transmission rod (8) is respectively fixedly connected to a first gear (9), a second gear (10) and a second bevel gear (20); one side of the second bevel gear (20) meshes with the first bevel gear (19) for transmission; the connecting rod (5) is fixedly connected to a first one-way gear (7); one side of the first one-way gear (7) meshes with the first gear (9) for rotation; one side of the second filter cartridge (3) is fixedly connected to a transmission sleeve (4); the transmission sleeve (4) is fixedly connected to a second one-way gear (11); one side of the second one-way gear (11) meshes with the second gear (10) for transmission; and the connecting rod (5) is movably sleeved inside the transmission sleeve (4).

10. A chemical pharmaceutical wastewater treatment device according to claim 5, characterized in that: A water inlet is provided at one end of the machine body (1), a water inlet pipe is fixedly connected to the water inlet, a first control valve is fixedly connected to the water inlet pipe, a plurality of drain outlets are provided on one side of the machine body (1), a plurality of drain pipes are fixedly connected to the plurality of drain outlets, a second control valve is fixedly connected to the plurality of drain pipes, and a plurality of support columns are fixedly connected to the bottom of the machine body (1).

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