Wastewater treatment equipment for synthetic leather washing and setting process

Abstract

The present application relates to wastewater treatment equipment technical field, specifically said is a kind of synthetic leather washing shaping process wastewater treatment equipment, including shell, the inside fixedly connected with cylinder sleeve of shell, the lower end of cylinder sleeve is fixedly connected with sleeve, the upper end of shell is fixedly connected with feed pipe, heating plate is provided at the inside bottom of shell, the inside of cylinder sleeve is provided with drainage mechanism, drainage mechanism includes sliding block, one end of sliding block is provided with drive assembly, hollow slot is opened in the inside of sliding block, the inside of cylinder sleeve is provided with air extraction mechanism, air extraction mechanism includes piston, the upper end of piston is provided with liquid addition mechanism;When the sliding block that is set is moved upward, the space inside the shell can be driven piston vacuum extraction, and dilute hydrochloric acid is automatically added to the wastewater to be treated, when the sliding block is moved downward, DMF in wastewater can be automatically discharged, after discharging DMF, sliding block continues to move downward and realizes that the wastewater to be treated is automatically added into the inside of shell.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a wastewater treatment device for the washing and shaping process of synthetic leather. Background Technology

[0002] Synthetic leather requires a large amount of water-based auxiliaries for heat setting during the washing and setting process. This process generates high-concentration organic wastewater, among which dimethylformamide (DMF) is the most destructive pollutant, resulting in extremely high COD in the wastewater. DMF is an organic compound that is extremely difficult to biodegrade. At the same time, DMF has a strong inhibitory effect on microorganisms. Direct entry into the biological system will lead to sludge poisoning and activity collapse, making it almost impossible to start traditional biological processes.

[0003] The DMF content in the washing and setting wastewater of synthetic leather is extremely high, with COD reaching tens or even hundreds of thousands. DMF has a strong inhibitory effect on biological systems, and traditional biological methods are almost ineffective in treating it. Therefore, it is necessary to separate water and DMF through evaporation and concentration. However, existing evaporation equipment has obvious shortcomings. The wastewater needs to be heated to above 100°C to boil and evaporate, which consumes a lot of energy. Moreover, at high temperatures, toxic organic substances such as DMF are easily volatilized and released with the steam, producing malodorous gases containing dimethylamine, causing secondary pollution. Furthermore, the discharge of DMF concentrate and the replenishment of new wastewater need to be operated independently during the treatment process, resulting in process breaks and low efficiency. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a wastewater treatment device for the washing and shaping process of synthetic leather.

[0005] The technical solution adopted by this invention to solve its technical problem is: a wastewater treatment device for the washing and shaping process of synthetic leather, including a shell, a cylinder liner fixedly connected inside the shell, a third opening inside the cylinder liner, a sleeve fixedly connected to the lower end of the cylinder liner, a feed pipe fixedly connected to the upper end of the shell, a heating plate provided at the bottom of the shell, a draining mechanism provided inside the cylinder liner, the draining mechanism including a sliding block, a driving component provided at one end of the sliding block, a hollow groove provided inside the sliding block, an air extraction mechanism provided inside the cylinder liner, the air extraction mechanism including a piston, a liquid addition mechanism provided at the upper end of the piston, the liquid addition mechanism including a rubber block, a fourth opening inside the rubber block, the cylinder liner at the upper end of the piston is filled with dilute hydrochloric acid, and the cylinder liner at the lower end of the piston is used for vacuuming; The sliding block can create a vacuum inside the shell when it moves upward. It can also add a measured amount of dilute hydrochloric acid into the shell when it moves upward. When the sliding block moves downward, it can first discharge the concentrated DMF inside the shell. After the DMF is discharged, the sliding block continues to move downward, which will drive the wastewater to be treated inside the feed pipe into the shell.

[0006] Preferably, the sleeve has a first opening and a second opening inside, with the first opening located above the second opening. The staggered arrangement of the first and second openings forms a layered liquid flow and drainage structure, which can precisely match the lifting stroke of the sliding block to achieve time-sharing operation and effectively avoid interference between the feeding, storage, and drainage processes. The upper position of the first opening ensures that the concentrated DMF waste liquid at the bottom of the shell can fully flow into the hollow tank, avoiding waste liquid residue that could lead to incomplete treatment. The lower position of the second opening ensures that the hollow tank can be accurately aligned and drain smoothly, preventing waste liquid accumulation and blockage of the channel, greatly improving the stability and thoroughness of the equipment's drainage, and ensuring the standardized effect of wastewater concentration treatment.

[0007] Preferably, the drive assembly includes a hydraulic cylinder, the output end of which is fixedly connected to the sliding block, and the lower end of the non-output end of the hydraulic cylinder is fixedly connected to the housing.

[0008] Preferably, an intake pipe is fixedly connected inside the cylinder liner, and a one-way valve is installed inside the intake pipe. The one-way valve inside the intake pipe restricts gas from entering the cylinder liner in only one direction. An outlet pipe is fixedly connected inside the cylinder liner, and a one-way valve is installed inside the outlet pipe. The one-way valve inside the outlet pipe restricts gas inside the cylinder liner from being discharged in only one direction through the outlet pipe. When the piston moves upward, the one-way valve in the intake pipe opens and the outlet pipe closes, quickly drawing air from inside the casing to create negative pressure, lowering the boiling point of water and achieving low-temperature evaporation. When the piston moves downward, the one-way valve in the outlet pipe opens and the intake pipe closes, smoothly discharging gas from inside the cylinder liner. The one-way sealing structure can prevent gas backflow, ensure stable vacuum, continuously guarantee the low-temperature energy-saving treatment effect, and at the same time prevent exhaust gas from backflowing and contaminating the wastewater to be treated.

[0009] Preferably, the lower end of the rubber block is fixedly connected to the piston, and the upper end of the rubber block is slidably connected to the feed pipe; the rubber block adopts a flexible sealing sliding structure, which automatically seals and opens the feed pipe by following the rise and fall of the piston and the sliding block, eliminating the need for a separate electrically controlled valve, simplifying the equipment structure and reducing manufacturing costs.

[0010] Preferably, a discharge pipe is fixedly connected to the upper end of the housing.

[0011] Preferably, the surface of the piston is slidably connected to the cylinder liner.

[0012] Preferably, the upper end of the sliding block is fixedly connected to the piston, and the surface of the sliding block is slidably connected to the inner wall of the sleeve.

[0013] Preferably, a filter screen is installed inside the feed pipe near the upper end. The filter screen inside the feed pipe can filter particulate impurities such as leather in the wastewater. The built-in filter screen in the feed pipe can intercept leather scraps, fiber particles, solid impurities and other impurities mixed in the synthetic leather washing wastewater before the wastewater enters the main body of the equipment, thereby preventing solid impurities from entering the shell, sleeve and pipe from the source and effectively preventing pipeline blockage, mechanism jamming and other malfunctions.

[0014] Preferably, the first opening coincides with the bottom of the shell, allowing the liquid at the bottom of the shell to flow into the hollow tank. The structural design of the first opening precisely aligned with the bottom of the shell allows the concentrated high-concentration DMF waste liquid at the bottom of the shell to flow into the hollow tank without any dead corners or residues, solving the problems of waste liquid residue and insufficient concentration in traditional equipment.

[0015] The beneficial effects of this invention are: The wastewater treatment equipment for the washing and shaping process of synthetic leather described in this invention can drive the piston to create a vacuum in the space inside the shell when the sliding block moves upward. Vacuuming reduces the boiling point of the wastewater and significantly reduces energy consumption when evaporating the water in the wastewater. When the sliding block moves downward, it can automatically discharge DMF in the wastewater. After the DMF is discharged, the sliding block continues to move downward to automatically add wastewater to be treated into the shell.

[0016] The wastewater treatment equipment for the washing and shaping process of synthetic leather described in this invention can automatically discharge DMF in the wastewater when the sliding block moves downward. When the sliding block moves downward, the hollow groove inside it moves downward synchronously and coincides with the second opening on the sleeve. The DMF accumulated at the bottom of the shell due to evaporation and concentration flows into the hollow groove through the first opening under the action of gravity, and is automatically discharged from the equipment when it moves downward with the hollow groove to the position of the second opening.

[0017] The wastewater treatment equipment for the washing and shaping process of synthetic leather described in this invention has a sliding block that drives the piston to move down synchronously, discharging the gas in the cylinder liner through the exhaust pipe and driving the rubber block down to release the blockage of the feed pipe, allowing new wastewater to automatically enter the shell. A single downward stroke completes the seamless connection between the discharge of concentrated liquid and the replenishment of new material, realizing a fully automated cycle.

[0018] The wastewater treatment equipment for the washing and shaping process of synthetic leather described in this invention has the following features: When the piston moves upward, it causes the fourth opening to overlap with the third opening. At this time, the dilute hydrochloric acid in the fourth opening will be automatically added into the interior of the shell. The addition of dilute hydrochloric acid to the wastewater to be treated can neutralize the alkalinity of the synthetic leather wastewater, adjust the wastewater to neutral, inhibit the hydrolysis and decomposition of DMF under vacuum and high temperature conditions, reduce the generation of dimethylamine byproducts, ensure the DMF recovery rate, and reduce equipment corrosion. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a sectional view of the overall structure; Figure 3 This is a schematic diagram of the connection structure between the housing and the cylinder liner; Figure 4 This is a schematic diagram of the connection structure between the cylinder liner and the sleeve; Figure 5 This is a schematic diagram of the connection structure between the sliding block and the piston; Figure 6 This is a schematic diagram of the connection structure between the hydraulic cylinder and the sliding block; Figure 7 This is a schematic diagram of the connection structure between the rubber block and the feed pipe; Figure 8 This is a schematic diagram of the connection structure between the piston and the rubber block; Figure 9 This is a cross-sectional view of the cylinder liner.

[0021] In the diagram: 100, housing; 101, sleeve; 1011, first opening; 1012, second opening; 200, cylinder liner; 2001, third opening; 201, air inlet pipe; 202, air outlet pipe; 300, feed pipe; 400, draining mechanism; 401, sliding block; 4011, hollow groove; 402, hydraulic cylinder; 500, suction mechanism; 501, piston; 600, liquid filling mechanism; 601, rubber block; 6011, fourth opening; 700, discharge pipe. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-9As shown, a wastewater treatment device for the washing and shaping process of synthetic leather according to the present invention includes a housing 100, a cylinder liner 200 fixedly connected inside the housing 100, a sleeve 101 fixedly connected to the lower end of the cylinder liner 200, a feed pipe 300 fixedly connected to the upper end of the housing 100, a heating plate provided at the bottom of the interior of the housing 100, a draining mechanism 400 provided inside the cylinder liner 200, the draining mechanism 400 including a sliding block 401, a driving component provided at one end of the sliding block 401, a hollow groove 4011 opened inside the sliding block 401, and an air extraction mechanism 500 provided inside the cylinder liner 200, the air extraction mechanism 500 including a piston 501, a liquid adding mechanism 600 provided at the upper end of the piston 501; The sliding block 401 can be used to create a vacuum inside the housing 100 when it moves upward. When it moves downward, the concentrated DMF inside the housing 100 can be discharged. After the DMF is discharged, the sliding block 401 continues to move downward, which will drive the wastewater to be treated inside the feed pipe 300 into the housing 100.

[0024] Specifically, the sleeve 101 has a first opening 1011 and a second opening 1012 inside, with the first opening 1011 located above the second opening 1012. The staggered arrangement of the first and second openings allows for switching of the conduction path in conjunction with the vertical displacement of the sliding block 401. The first opening 1011 receives the concentrated DMF waste liquid inside the housing 100, while the second opening 1012 discharges the waste liquid from the hollow tank 4011. This layered opening design enables separate collection and drainage operations, avoiding... It prevents waste liquid backflow and leakage, ensuring the sealing and stability of the drainage operation. When in use, the hydraulic cylinder 402 is activated and moves downward. The downward movement of the hydraulic cylinder 402 first drives the sliding block 401 downward. The downward movement of the sliding block 401 will first discharge the concentrated liquid in the hollow tank 4011 from the equipment. After the concentrated liquid in the hollow tank 4011 is discharged from the equipment, the sliding block 401 continues to move downward, which will drive the rubber block 601 away from the feed pipe 300. At this time, the wastewater inside the feed pipe 300 will flow into the housing 100 under the action of gravity.

[0025] The heating plate heats and evaporates the water in the wastewater, and the concentrated DMF remains in the hollow tank 4011. At this time, the hydraulic cylinder 402 is activated to move downward. The downward movement of the hydraulic cylinder 402 will drive the sliding block 401 to move downward, which in turn will drive the hollow tank 4011 to move downward. When the hollow tank 4011 moves downward and coincides with the second opening 1012, the concentrated DMF inside the hollow tank 4011 will be discharged from the equipment through the second opening 1012. When the hollow tank 4011 moves downward and coincides with the second opening 1012, the concentrated liquid inside the hollow tank 4011 will be discharged from the equipment through the second opening 1012, and a sealed collector connected to the second opening 1012 will collect it.

[0026] Furthermore, the drive assembly includes a hydraulic cylinder 402, the output end of which is fixedly connected to a sliding block 401, and the lower end of the non-output end of the hydraulic cylinder 402 is fixedly connected to the housing 100; the sleeve 101 has an opening inside, the sliding groove on the sleeve 101 is blocked by the sliding block 401, and the output end of the hydraulic cylinder 402 passes through the opening inside the sleeve 101 and is fixedly connected to the sliding block 401. Specifically, an intake pipe 201 is fixedly connected inside the cylinder liner 200. A one-way valve is installed inside the intake pipe 201, which restricts gas from entering the cylinder liner 200 in one direction only. An outlet pipe 202 is fixedly connected inside the cylinder liner 200, and a one-way valve is installed inside the outlet pipe 202, which restricts gas inside the cylinder liner 200 from being discharged in one direction only through the outlet pipe 202. The intake pipe 201, in conjunction with the internal one-way valve, can draw air from inside the housing 100 in one direction when the piston 501 moves upward and generates negative pressure, thus stabilizing and forming a vacuum environment. Some of the air inside the housing 100 is drawn in by the negative pressure inside the cylinder liner 200, causing the air inside the housing 100 to be drawn into the cylinder liner 200. It should be noted that the liquid addition mechanism 600 includes a rubber block 601. The lower end of the rubber block 601 is fixedly connected to the piston 501, and the upper end of the rubber block 601 is slidably connected to the feed pipe 300. The rubber block 601 moves up and down synchronously with the piston 501 and the sliding block 401. When moving upward, it fits and blocks the feed pipe 300. The feed pipe 300 is L-shaped at the upper end of the housing 100. The rubber block 601 is located at the corner of the L-shape of the feed pipe 300. Before adding liquid into the housing 100, the corner of the feed pipe 300 is blocked. The inside of the rubber block 601 is stainless steel wrapped with rubber. The feed pipe 300 is made of stainless steel, which ensures the airtightness of the housing 100 and ensures the smooth operation of vacuum pumping, avoiding air leakage that could lead to negative pressure failure. When moving downward, it disengages from the feed pipe 300, releases the blockage, and realizes automatic feeding of the wastewater to be treated. The feed on / off is automatically controlled through mechanical linkage, requiring no manual operation and adapting to continuous wastewater treatment operations.

[0027] It is worth mentioning that a discharge pipe 700 is fixedly connected to the upper end of the housing 100.

[0028] Specifically, the surface of piston 501 is slidably connected to cylinder liner 200.

[0029] Furthermore, the upper end of the sliding block 401 is fixedly connected to the piston 501, and the surface of the sliding block 401 is slidably connected to the inner wall of the sleeve 101. The lower end of the cylinder liner 200 is fixedly connected to the sleeve 101, and the sliding block 401 is slidably connected to the inside of the sleeve 101. The sliding block 401 seals the internal space of the sleeve 101, and the upper end of the sliding block 401 is located inside the cylinder liner 200.

[0030] It should be noted that a filter screen is installed near the upper end inside the feed pipe 300. The filter screen is located at the upper end of the feed pipe 300, and even when the rubber block 601 is at its highest point, it is still lower than the height of the filter screen. The filter screen inside the feed pipe 300 can filter out particulate impurities such as leather in the wastewater. Before the wastewater enters the housing 100, the filter screen intercepts leather scraps, solid particles, and other impurities contained in the synthetic leather washing wastewater, preventing solid impurities from entering the equipment and causing blockages in the pipes and cavities. This prevents impurities from affecting the heating, evaporation, and negative pressure treatment effects, while also reducing internal scale buildup and wear, extending the equipment's service life, and ensuring the purity of the treated wastewater and the stability of the equipment's operation.

[0031] Specifically, the first opening 1011 coincides with the bottom of the shell 100, allowing the liquid at the bottom of the shell 100 to flow into the hollow tank 4011. A heating plate is installed at the bottom inside the shell 100 to heat the wastewater inside the shell 100. The sleeve 101 is a drainage structure that cooperates with the sliding block 401. The design of the first opening 1011 connecting and coinciding with the bottom of the shell 100 allows the high-concentration DMF waste liquid inside the shell 100 after heating and concentration to flow smoothly into the hollow tank 4011, achieving precise collection and aggregation of the concentrated waste liquid. This avoids the waste liquid remaining at the bottom of the shell 100 and being unable to be discharged, improving the thoroughness of DMF pollutant recovery and treatment, and reducing COD pollution and toxicity hazards in the wastewater.

[0032] Working principle: When in use, the hydraulic cylinder 402 is activated by the controller to move downward for a period of time, and then the hydraulic cylinder 402 is activated by the controller to move upward to reset. The downward movement of the hydraulic cylinder 402 first drives the sliding block 401 downward. The downward movement of the sliding block 401 will first discharge the concentrated liquid in the hollow tank 4011 from the equipment. After the concentrated liquid in the hollow tank 4011 is discharged from the equipment, the sliding block 401 continues to move downward, which will drive the rubber block 601 away from the feed pipe 300. At this time, the wastewater inside the feed pipe 300 will flow into the housing 100 under the action of gravity. The housing 100 is filled with wastewater from the synthetic leather washing and shaping process that needs to be treated. The height of the wastewater in the housing 100 should be lower than the height of the air inlet pipe 201. During the process of the hydraulic cylinder 402 moving downward for a period of time and then moving upward, a certain amount of wastewater is added to the housing 100.

[0033] Initially, the rubber block 601 is inside the feed pipe 300, blocking the feed pipe 300. The cylinder liner 200 is equipped with an inlet pipe 201 and an outlet pipe 202 at both ends. Both the inlet pipe 201 and the outlet pipe 202 are equipped with one-way valves. The one-way valve in the inlet pipe 201 controls that gas can only enter the cylinder liner 200 through the inlet pipe 201. The one-way valve in the outlet pipe 202 controls that gas in the cylinder liner 200 can only be discharged from the equipment through the outlet pipe 202.

[0034] Initially, the hollow groove 4011 coincides with the first opening 1011; during vacuuming, the hollow groove 4011 coincides with the first opening 1011, and the maximum height that the hollow groove 4011 rises to coincide with the first opening 1011 is reached. At this time, some liquid inside the shell 100 will flow into the hollow groove 4011, and the sliding block 401 will block the sleeve 101.

[0035] A heating plate is installed at the bottom of the housing 100. The heating plate heats and evaporates the water in the wastewater. The concentrated DMF is stored in the hollow tank 4011. At this time, the hydraulic cylinder 402 is activated to move downward. The downward movement of the hydraulic cylinder 402 will drive the sliding block 401 to move downward. The downward movement of the sliding block 401 will drive the hollow tank 4011 to move downward. When the hollow tank 4011 moves downward and coincides with the second opening 1012, the concentrated DMF inside the hollow tank 4011 will be discharged from the equipment through the second opening 1012. When the hollow tank 4011 moves downward and coincides with the second opening 1012, the concentrated liquid inside the hollow tank 4011 will be discharged from the equipment through the second opening 1012. The second opening 1012 is connected to an external sealed collector for collection.

[0036] As the sliding block 401 moves downward, it will drive the piston 501 to move downward. The downward movement of the piston 501 will push the gas inside the cylinder liner 200 to be discharged from the exhaust pipe 202. The exhaust pipe 202 is equipped with a one-way valve to restrict the gas inside the cylinder liner 200 to be discharged only from the exhaust pipe 202. When the piston 501 moves downward, the piston 501 will drive the rubber block 601 to move downward. The downward movement of the rubber block 601 will drive the fourth opening 6011 away from the cylinder liner 200. At this time, the dilute hydrochloric acid remaining in the sealed space at the upper end of the piston 501 inside the cylinder liner 200 will enter the fourth opening 6011. When piston 501 moves upward, it will cause the fourth opening 6011 to overlap with the third opening 2011. At this time, the dilute hydrochloric acid in the fourth opening 6011 will be automatically added into the interior of the shell. Adding dilute hydrochloric acid to the wastewater to be treated can neutralize the alkalinity of synthetic leather wastewater, adjust the wastewater to neutral, inhibit the hydrolysis and decomposition of DMF under vacuum and high temperature conditions, reduce the generation of dimethylamine byproducts, ensure DMF recovery rate, and reduce equipment corrosion.

[0037] When piston 501 moves downward, the concentrated liquid inside shell 100 is discharged first. At the same time, piston 501 also drives rubber block 601 to move downward. As rubber block 601 moves downward, it moves away from feed pipe 300. At this time, the wastewater to be treated in feed pipe 300 will enter the shell 100 through feed pipe 300. The concentrated liquid inside shell 100 is discharged first, and then wastewater to be treated is added to shell 100. A heating plate is set at the bottom of the shell 100. The heating plate heats the wastewater inside shell 100, causing the water in the wastewater to evaporate and vaporize, thereby concentrating DMF in the wastewater. The water vapor generated by evaporation is discharged through discharge pipe 700 and collected in an external condenser to achieve the separation of water and DMF.

[0038] A heating plate is installed at the bottom of the shell 100 to heat the wastewater inside the shell 100. The boiling point of DMF in the wastewater is higher than that of water. DMF (dimethylformamide) is the most destructive pollutant in the washing and setting wastewater of synthetic leather. The effects of DMF are mainly reflected in three aspects: First, it increases COD to tens of thousands or even hundreds of thousands, and it is an organic matter that is extremely difficult to biodegrade; second, it has a strong inhibitory effect on microorganisms, and direct entry into the biological system will lead to sludge poisoning and activity collapse; third, it has Class II occupational toxicity, and can be absorbed through the skin and respiratory tract, causing liver damage. Its decomposition product, dimethylamine, has a strong fishy smell.

[0039] During equipment processing, hydraulic cylinder 402 is activated to move upward. The upward movement of hydraulic cylinder 402 will drive sliding block 401 to move upward. The upward movement of sliding block 401 will drive hollow groove 4011 to move upward. The upward movement of sliding block 401 will drive piston 501 to move upward. The upward movement of the sliding block 401 will also drive the rubber block 601 to move upward, and the upward movement of the rubber block 601 will block the feed pipe 300.

[0040] The upward movement of piston 501 creates a negative pressure inside cylinder liner 200. This negative pressure then draws gas from inside housing 100 through intake pipe 201, creating a vacuum inside housing 100 and reducing pressure. This eliminates the need to heat wastewater to over 100 degrees Celsius; the water in the wastewater can be evaporated at a lower temperature. Traditional wastewater evaporation requires heating water to over 100 degrees Celsius to boil, resulting in extremely high energy consumption. The upward movement of piston 501 creates a negative pressure through cylinder liner 200, which then draws gas from inside housing 100 through intake pipe 201. After vacuuming, the air pressure inside the shell 100 decreases, and the boiling point of water decreases accordingly. For every order of magnitude increase in vacuum, the boiling point can be lowered, enabling the wastewater inside the shell 100 to evaporate at a lower temperature. Energy consumption during the evaporation process can be reduced, and operating costs can be significantly lowered. An external vacuum pump continuously removes non-condensable gases from the shell 100, offsetting the air seeping into the equipment gaps and preventing pressure rise from disrupting the vacuum environment. Low-temperature evaporation avoids the high-temperature volatilization and release of toxic organic substances such as DMF, reduces odor emissions, and facilitates condensation and recovery.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The descriptions in the above embodiments and specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device for the washing and shaping process of synthetic leather, comprising a housing (100), characterized in that: A cylinder liner (200) is fixedly connected inside the housing (100). A third opening (2001) is provided inside the cylinder liner (200). A sleeve (101) is fixedly connected to the lower end of the cylinder liner (200). A feed pipe (300) is fixedly connected to the upper end of the housing (100). A heating plate is provided at the bottom inside the housing (100). A draining mechanism (400) is provided inside the cylinder liner (200). The draining mechanism (400) includes a sliding block (401). A driving component is provided at one end of the sliding block (401). 01) has a hollow groove (4011) inside. The cylinder liner (200) is provided with a vacuuming mechanism (500). The vacuuming mechanism (500) includes a piston (501). The upper end of the piston (501) is provided with a liquid filling mechanism (600). The liquid filling mechanism (600) includes a rubber block (601). The rubber block (601) has a fourth opening (6011) inside. The cylinder liner (200) at the upper end of the piston (501) is filled with dilute hydrochloric acid. The cylinder liner (200) at the lower end of the piston (501) is used for vacuuming. By using the sliding block (401), a vacuum can be drawn into the space inside the shell (100) when the sliding block (401) moves upward. When the sliding block (401) moves upward, dilute hydrochloric acid can also be added into the shell (100) in a measured amount. When the sliding block (401) moves downward, the concentrated DMF in the shell (100) can be discharged first. After the DMF is discharged, the sliding block (401) continues to move downward, driving the wastewater to be treated inside the feed pipe (300) into the shell.

2. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 1, characterized in that: The sleeve (101) has a first opening (1011) and a second opening (1012) inside, with the first opening (1011) located at the upper end of the second opening (1012).

3. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 2, characterized in that: The drive assembly includes a hydraulic cylinder (402), the output end of which is fixedly connected to the sliding block (401), and the lower end of the non-output end of the hydraulic cylinder (402) is fixedly connected to the housing (100).

4. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 3, characterized in that: An intake pipe (201) is fixedly connected inside the cylinder liner (200). A one-way valve is installed inside the intake pipe (201). The one-way valve inside the intake pipe (201) restricts gas from entering the cylinder liner (200) in one direction only. An exhaust pipe (202) is fixedly connected inside the cylinder liner (200). A one-way valve is installed inside the exhaust pipe (202). The one-way valve inside the exhaust pipe (202) restricts gas inside the cylinder liner (200) from being discharged in one direction only through the exhaust pipe (202).

5. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 4, characterized in that: The lower end of the rubber block (601) is fixedly connected to the piston (501), and the upper end of the rubber block (601) is slidably connected to the feed pipe (300).

6. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 5, characterized in that: The upper end of the housing (100) is fixedly connected to a discharge pipe (700).

7. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 6, characterized in that: The surface of the piston (501) is slidably connected to the cylinder liner (200).

8. The wastewater treatment equipment for the washing and setting process of synthetic leather according to claim 7, characterized in that: The upper end of the sliding block (401) is fixedly connected to the piston (501), and the surface of the sliding block (401) is slidably connected to the inner wall of the sleeve (101).

9. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 8, characterized in that: A filter screen is installed inside the feed pipe (300) near the upper end. The filter screen inside the feed pipe (300) can filter particulate impurities such as leather in the wastewater.

10. The wastewater treatment equipment for the washing and shaping process of synthetic leather according to claim 2, characterized in that: The first opening (1011) coincides with the bottom of the shell (100), allowing the liquid at the bottom of the shell (100) to flow into the hollow groove (4011).

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