Wastewater treatment device for leather additive production

Abstract

The invention belongs to the field of leather processing, and discloses a wastewater treatment device for leather assistant production, which comprises a step-by-step feeding and stirring mechanism, the bottom of the step-by-step feeding and stirring mechanism is fixedly connected with a first support rod, and the bottom of the step-by-step feeding and stirring mechanism is fixedly connected with a shunting and collecting mechanism; the step-by-step feeding and stirring mechanism comprises an inverted-cone-shaped waste water storage tank, the top of the inverted-cone-shaped waste water storage tank is fixedly connected with an air pressure accelerating device, the top of the inverted-cone-shaped waste water storage tank is fixedly connected with a step-by-step feeding device, and the interior of the inverted-cone-shaped waste water storage tank is fixedly connected with a gradually-expanding stirring device. The flow rate of the wastewater is increased through the flow dividing and collecting mechanism, so that pollutants in the wastewater can be more uniformly distributed in a water body, the situation that the concentration of local pollutants is too high or too low is avoided, a filtering medium is more uniformly contacted with and intercepts the pollutants, and the overall filtering effect is improved; meanwhile, the flow velocity of the wastewater is further increased by applying pressure through the air pressure accelerating device.

Description

Technical Field

[0001] The invention relates to the technical field of leather processing, in particular to a wastewater treatment device for leather auxiliary agent production. Background Art

[0002] A variety of chemical substances are used in the production process of leather auxiliaries, resulting in extremely complex wastewater composition, which often contains a large amount of organic matter, heavy metal ions, surfactants, dyes and other pollutants; among them, organic matter may include aliphatic compounds, aromatic compounds, etc., and heavy metal ions such as chromium, lead, cadmium, etc. These substances are intertwined, increasing the difficulty of wastewater treatment.

[0003] The patent application with application number CN202122530672.1 discloses a leather tanning cage with a wastewater treatment device, which belongs to the field of leather processing technology. The key points of its technical solution include a device body, the bottom of the device body is fixedly connected to a base, the top of the base is fixedly connected to a wastewater treatment tank, and a filtering mechanism is placed on the front side of the wastewater treatment tank.

[0004] The current leather tanning drum with wastewater treatment device has certain optimization effects on wastewater treatment, but there is still room for optimization in the initial treatment stage of wastewater; for example, we can further explore ways to increase the initial treatment speed of wastewater and enhance the treatment effect to more efficiently cope with the growing demand for wastewater treatment. In view of this, the test device is improved. Summary of the Invention

[0005] The object of the present invention is to provide a wastewater treatment device for leather auxiliary production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a wastewater treatment device for leather auxiliary agent production, comprising a step-by-step feeding and stirring mechanism, a first support rod being fixedly connected to the bottom of the step-by-step feeding and stirring mechanism, and a diversion and collection mechanism being fixedly connected to the bottom of the step-by-step feeding and stirring mechanism;

[0007] The step-by-step feeding and stirring mechanism includes an inverted conical wastewater storage tank, the top of which is fixedly connected to an air pressure acceleration device, the top of which is fixedly connected to a step-by-step feeding device, and the inside of the inverted conical wastewater storage tank is fixedly connected to a gradually expanding stirring device.

[0008] Preferably, a first opening is provided on the top of the inverted conical wastewater storage tank, a first fixing rod is fixedly connected to the inside of the first opening, a matching block is fixedly connected to the end of the first fixing rod away from the first opening, a second opening is provided on the top of the inverted conical wastewater storage tank, a water inlet opening is provided on the cylindrical surface of the inverted conical wastewater storage tank, a water outlet opening is provided at the bottom of the inverted conical wastewater storage tank, and a telescopic opening and closing device is fixedly connected to the inside of the water outlet opening.

[0009] Preferably, the pneumatic acceleration device includes a first cylinder, a first connecting rod is fixedly connected to the inside of the first cylinder, the end of the first connecting rod close to the axis of the first cylinder is fixedly connected to the first rotating device, the end face of the output shaft of the first rotating device is fixedly connected to the first connecting rod, the end of the first connecting rod away from the first rotating device is rotatably connected to the second connecting rod, the end of the second connecting rod away from the first connecting rod is rotatably connected to the piston, the cylindrical surface of the first cylinder is provided with a rectangular opening, an L-shaped annular stopper is fixedly connected to the inside of the first cylinder, and the outer surface of the L-shaped annular stopper close to the inner wall of the first cylinder is fixedly connected to the first telescopic rod.

[0010] Preferably, the step-by-step delivery device includes a second cylinder, the bottom of the second cylinder is fixedly connected to a threaded rotation device, and the surface of the threaded rod of the threaded rotation device is threadedly connected to a second stopper.

[0011] Preferably, the gradually expanding stirring device includes a second rotating device, and a gradually expanding fan plate is fixedly connected to the surface of the output shaft of the second rotating device.

[0012] Preferably, the diversion and collection mechanism includes a curved tapered conduit, an end of the curved tapered conduit away from the axis of the inverted conical wastewater storage tank is fixedly connected to a connecting conduit, a first conduit is fixedly connected to the bottom of the connecting conduit, an end of the connecting conduit away from the curved tapered conduit is fixedly connected to an inverted L-shaped conduit, an end of the inverted L-shaped conduit close to the connecting conduit is fixedly connected to a hemispherical filter net, a pre-treated wastewater collection tank is provided at the end of the inverted L-shaped conduit away from the connecting conduit, and an L-shaped filter plate is provided on the side of the pre-treated wastewater collection tank close to the first conduit.

[0013] Preferably, the first opening axis coincides with the first cylinder axis, the matching block diameter is consistent with the inner ring diameter of the L-shaped annular stopper, the second opening axis coincides with the second cylinder axis, the first opening axis and the second opening axis are symmetrical to each other along the axis of the inverted cone-shaped wastewater storage tank, and the water outlet opening diameter is consistent with the inner diameter of the larger end of the curved tapered conduit.

[0014] Preferably, the diameter of the piston is consistent with the diameter of the inner wall of the first cylinder, the piston is slidingly connected to the first cylinder, the outer surface diameter of the L-shaped annular stopper is consistent with the diameter of the first cylinder, the moving rod inside the first telescopic rod is L-shaped, the L-shaped moving rod inside the first telescopic rod is located inside the rectangular opening, and the bottom of the first telescopic rod is fixedly connected to the top of the inverted cone-shaped wastewater storage tank.

[0015] Preferably, the first conduit is located above the L-shaped filter plate, the width of the L-shaped filter plate is consistent with the width of the pre-treated wastewater collection box, the inverted L-shaped conduit is inclined at a certain angle, and there is a gap between the first conduit and the inverted L-shaped conduit.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This wastewater treatment device for leather auxiliary agent production propels gas into an inverted cone-shaped wastewater storage tank through an air pressure acceleration device. When the gas is pushed into the wastewater storage tank, it exerts pressure on the wastewater, causing the wastewater to flow faster. In this way, the wastewater can pass through more filter media per unit time. As the flow rate of the wastewater increases, its residence time in the filtration equipment is correspondingly reduced, which can reduce the time required for wastewater treatment, greatly improve the overall filtration efficiency, and increase the wastewater treatment volume per unit time.

[0018] 2. The wastewater treatment device for leather auxiliary agent production first adds a small amount of coagulant through a step-by-step dosing device, causing the colloidal particles and fine suspended matter in the wastewater to initially condense and form tiny flocs. These tiny flocs have a large specific surface area and active sites, providing more adsorption and bridging sites for the subsequent action of coagulants or coagulants, which is beneficial to assist the secondary input of coagulants to further form larger and denser flocs, thereby improving the coagulation effect.

[0019] 3. The wastewater treatment device for leather auxiliary agent production uses a gradual expansion stirring device to produce shear and pushing effects of different intensities on the liquid, thereby enhancing the uniformity of stirring. This allows the effective ingredients in the coagulant to quickly contact the colloidal particles, suspended matter, etc. in the wastewater, shortening the start-up time of the reaction, so that the coagulation reaction can achieve better results in a shorter time, while avoiding the occurrence of local agent concentrations that are too high or too low, ensuring that in the entire reaction system, the agent and pollutants can fully contact and react, thereby improving the efficiency of the coagulation reaction and allowing more colloidal particles and suspended matter to be condensed.

[0020] 4. The wastewater treatment device for leather auxiliary agent production increases the flow rate of wastewater through a diversion and collection mechanism, thereby allowing pollutants in the wastewater to be more evenly distributed in the water body, avoiding excessively high or low local pollutant concentrations, and allowing the filter medium to more evenly contact and intercept pollutants, thereby improving the overall filtration effect. At the same time, pressure is applied by an air pressure acceleration device to further enhance the flow rate of wastewater, so that the wastewater flows out of the curved tapered conduit and directly hits the hemispherical filter net. Then the wastewater passes through the filter net, but the coagulated impurities in the wastewater are intercepted by the filter net and then fall through the first conduit onto the L-shaped filter plate under the action of gravity. In this way, the coagulated impurities are diverted while avoiding a decrease in the speed of initial wastewater treatment due to the accumulation of coagulated impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the step-by-step stirring mechanism of the present invention;

[0023] Figure 3 This is a cross-sectional view of the step-by-step stirring mechanism of the present invention;

[0024] Figure 4 This is a schematic structural diagram of the inverted cone-shaped wastewater storage tank of the present invention;

[0025] Figure 5 is a cross-sectional view of a conical wastewater storage tank according to the present invention;

[0026] Figure 6 For the present invention Figure 5 A is an enlarged schematic diagram;

[0027] Figure 7 Schematic diagram of the structure of the air pressure acceleration device of the present invention;

[0028] Figure 8 is a cross-sectional view of the air pressure acceleration device of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the step-by-step delivery device of the present invention;

[0030] Figure 10 This is a schematic structural diagram of the gradually expanding stirring device of the present invention;

[0031] Figure 11 It is a structural schematic diagram of the diversion and collection mechanism of the present invention;

[0032] Figure 12 It is a cross-sectional view of the diversion and collection mechanism of the present invention.

[0033] In the figure: 1. Step-by-step mixing mechanism; 101. Inverted conical wastewater storage tank; 1011. First opening; 1012. First fixing rod; 1013. Matching block; 1014. Second opening; 1015. Water inlet opening; 1016. Water outlet opening; 1017. Telescopic opening and closing device; 102. Air pressure acceleration device; 1021. First cylinder; 1022. First connecting rod; 1023. First rotating device; 1024. First connecting rod; 1025. Second connecting rod; 1026. Piston; 1027. Rectangular opening; 1028 , L-shaped annular block; 1029, first telescopic rod; 103, step-by-step delivery device; 1031, second cylinder; 1032, threaded rotation device; 1033, second block; 104, gradually expanding stirring device; 1041, second rotation device; 1042, gradually expanding fan plate; 2, first support rod; 3, diversion and collection mechanism; 301, curved tapered conduit; 302, connecting conduit; 303, first conduit; 304, inverted L-shaped conduit; 305, hemispherical filter screen; 306, pre-treated wastewater collection box; 307, L-shaped filter plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0035] For example 1, please refer to Figures 1-10The present invention provides a technical solution: a wastewater treatment device for leather auxiliary agent production, comprising a step-by-step stirring mechanism 1, a first support rod 2 is fixedly connected to the bottom of the step-by-step stirring mechanism 1, and a diversion and collection mechanism 3 is fixedly connected to the bottom of the step-by-step stirring mechanism 1; the step-by-step stirring mechanism 1 comprises an inverted conical wastewater storage tank 101, a first opening 1011 is opened on the top of the inverted conical wastewater storage tank 101, the first opening 1011 is used for the air pressure acceleration device 102 to push the air sucked from the outside into the inverted conical wastewater storage tank 101, the axis of the first opening 1011 coincides with the axis of the first cylinder 1021, a first fixing rod 1012 is fixedly connected to the inside of the first opening 1011, and the first fixing rod 1012 is away from the first One end of the opening 1011 is fixedly connected to a matching block 1013, and the matching block 1013 controls the opening and closing states of the first opening 1011 by changing the distance between the matching block 1013 and the L-shaped annular stopper 1028. The diameter of the matching block 1013 is consistent with the inner ring diameter of the L-shaped annular stopper 1028. A second opening 1014 is provided on the top of the inverted conical wastewater storage tank 101. The second opening 1014 is used for the step-by-step feeding device 103 to feed the coagulant into the inverted conical wastewater storage tank 101. The axis of the second opening 1014 coincides with the axis of the second cylinder 1031. The axis of the first opening 1011 and the axis of the second opening 1014 are symmetrical to each other along the axis of the inverted conical wastewater storage tank 101. The cylindrical surface of the inverted conical wastewater storage tank 101 is provided with a water inlet. An opening 1015 is provided at the bottom of the inverted conical wastewater storage tank 101. A water outlet opening 1016 is provided. The diameter of the water outlet opening 1016 is consistent with the internal diameter of the larger end of the curved tapered conduit 301. A telescopic opening and closing device 1017 is fixedly connected to the inside of the water outlet opening 1016. An air pressure acceleration device 102 is fixedly connected to the top of the inverted conical wastewater storage tank 101. The air pressure acceleration device 102 includes a first cylinder 1021. A first connecting rod 1022 is fixedly connected to the inside of the first cylinder 1021. An end of the first connecting rod 1022 close to the axis of the first cylinder 1021 is fixedly connected to a first rotating device 1023. The end face of the output shaft of the first rotating device 1023 is fixedly connected to a first connecting rod 1024. The first connecting rod 1024 is away from the first connecting rod 1024. One end of a rotating device 1023 is rotatably connected to a second connecting rod 1025, and the end of the second connecting rod 1025 away from the first connecting rod 1024 is rotatably connected to a piston 1026. The diameter of the piston 1026 is consistent with the diameter of the inner wall of the first cylinder 1021. The piston 1026 is slidably connected to the first cylinder 1021. A rectangular opening 1027 is opened on the cylindrical surface of the first cylinder 1021. The rectangular opening 1027 is used to allow external air to enter the first cylinder 1021. An L-shaped annular stopper 1028 is fixedly connected to the inside of the first cylinder 1021. The L-shaped annular stopper 1028 is used to control the opening and closing of the first opening 1011 and the rectangular opening 1027 and cooperate with the up and down movement of the piston 1026 to inhale air from the rectangular opening 1027.The wastewater discharged from the first opening 1011 is pressurized with additional pressure on the inside of the inverted cone-shaped wastewater storage tank 101 to make its flow rate faster. The faster flow rate reduces the deposition rate of solid particles on the surface or inside of the filter layer, reduces the possibility of particles accumulating in the filter pores and causing blockage, enables the filtration process to continue more smoothly, and reduces the frequency of backwashing or filter material replacement required due to filter layer blockage. The outer surface diameter of the L-shaped annular stopper 1028 is consistent with the diameter of the first cylinder 1021. The outer surface of the L-shaped annular stopper 1028 close to the inner wall of the first cylinder 1021 is fixedly connected to the first telescopic rod 1029. The moving rod inside the first telescopic rod 1029 is L-shaped. The L-shaped moving rod inside the first telescopic rod 1029 is used to pass through the rectangular opening 1027 and is fixedly connected to the L-shaped annular baffle, thereby driving the L-shaped annular baffle to move up and down. The L-shaped moving rod inside the first telescopic rod 1029 is located at the rectangular opening 1027. Inside the shaped opening 1027, the bottom of the first telescopic rod 1029 is fixedly connected to the top of the inverted conical wastewater storage tank 101. The top of the inverted conical wastewater storage tank 101 is fixedly connected to a step-by-step delivery device 103. The step-by-step delivery device 103 includes a second cylinder 1031. The bottom of the second cylinder 1031 is fixedly connected to a threaded rotating device 1032. The surface of the threaded rod of the threaded rotating device 1032 is threadedly connected to a second stopper 1033. The inside of the inverted conical wastewater storage tank 101 is fixedly connected to a gradually expanding stirring device 104. The gradually expanding stirring device 104 includes a second rotating device 1041. The surface of the output shaft of the second rotating device 1041 is fixedly connected to a gradually expanding fan plate 1042. The gradually expanding fan plate 1042 has a unique design with a narrow top and wide bottom. When the gradually expanding fan plate 1042 rotates, the different positions of the fan blades will produce different strengths of shearing and pushing effects on the wastewater, thereby enhancing the uniformity of stirring.

[0036] The working principle of this embodiment is as follows: the second stopper 1033 is translated along the threaded rod by rotating the threaded rotating device 1032, so that the coagulant enters the inverted conical wastewater storage tank 101 under the influence of gravity, and then the threaded rotating device 1032 is rotated in the opposite direction to return the second stopper 1033 to its original position. When the coagulant enters the inverted conical wastewater storage tank 101, the second rotating device 1041 starts to rotate and drives the gradually expanding fan plate 1042 to rotate. When the gradually expanding fan plate 1042 rotates, there is friction between its surface and the surrounding water molecules. This friction will cause the water molecules in direct contact with the surface of the gradually expanding fan plate 1042 to obtain a tangential velocity, thereby rotating with the gradually expanding fan plate 1042. At the same time, due to the gradually expanding fan plate 1042 The plate 1042 is thick at the root and narrow at the top, so it can produce shear and pushing effects of different intensities on the liquid, thereby stirring the coagulant more evenly. By uniformly stirring the coagulant first input, it is caused to condense with the colloidal particles and fine suspended matter in the wastewater to form tiny flocs, and then the threaded rotating device 1032 is rotated again to make the second stopper 1033 move horizontally, and then the coagulant enters the inverted cone-shaped wastewater storage tank 101 under the influence of gravity, and then the threaded rotating device 1032 is rotated in the opposite direction again to make the second stopper 1033 return to its original position, and then the second rotating device 1041 is rotated to drive the gradually expanding fan plate 1042 to rotate, and the second input coagulant is uniformly stirred. During the stirring process, The tiny flocs formed by the first injection of coagulant provide more adsorption and bridging positions for the second injection of coagulant, so that the second injection of coagulant further forms larger and denser flocs. After the coagulant is fully stirred, the first telescopic rod 1029 is retracted, driving the L-shaped annular block 1028 to move downward, and the matching block 1013 is inserted into the inner ring of the L-shaped annular block 1028, so that the rectangular opening 1027 leaks out and the first opening 1011 is blocked. Then, the first rotating device 1023 is rotated to drive the first connecting rod 1024 to rotate, and then the first connecting rod 1024 drives the second connecting rod 1025 to rotate, and then the second connecting rod 1025 drives the piston 1026 to move upward, so that air enters through the rectangular opening 1027. The first cylinder 1021, when the piston 1026 moves to the highest point, it is first extended through the telescopic opening and closing device 1017, so that the wastewater begins to flow into the diversion collection mechanism 3, and then the first telescopic rod 1029 is extended to drive the L-shaped annular block 1028 to move upward to block the rectangular opening 1027 and let the first opening 1011 leak out. At the same time, the first rotating device 1023 is rotated to drive the first connecting rod 1024 to rotate, and then the first connecting rod 1024 drives the second connecting rod 1025 to rotate, and then the second connecting rod 1025 drives the piston 1026 to move downward, pushing the air inside the first cylinder 1021 into the inverted cone wastewater storage tank 101, and then repeating the above steps to push the air into the inverted cone wastewater storage tank 101.

[0037] Example 2, based on Example 1, please refer to Figure 11-12 The present invention provides a technical solution: the diversion and collection mechanism 3 includes a curved tapered conduit 301, which is used to change the flow direction of the wastewater while increasing the flow speed of the wastewater by gradually reducing the inner diameter, so that the pollutants in the wastewater are more evenly distributed in the water body, avoiding excessively high or low local pollutant concentrations, and making the filter medium more evenly contact and intercept pollutants, thereby improving the overall filtration effect. The curved tapered conduit 301 is fixedly connected to a connecting conduit 302 at one end away from the axis of the inverted conical wastewater storage tank 101. The connecting conduit 302 is used to prevent the wastewater from splashing out of the curved tapered conduit 301 and colliding with the hemispherical filter screen 305 under the action of inertia to pollute the surrounding environment of the device. The bottom of the connecting conduit 302 is fixedly connected to a first conduit 303, and the first conduit 303 is located above the L-shaped filter plate 307. The end of the connecting conduit 302 away from the curved tapered conduit 301 is fixedly connected to an inverted L-shaped conduit 304. The first conduit 303 and the inverted L-shaped There is a gap between the conduits 304, and the inverted L-shaped conduit 304 is inclined at a certain angle. The inclined inverted L-shaped conduit 304 is used to prevent backflow of wastewater passing through the hemispherical filter 305. The end of the inverted L-shaped conduit 304 close to the connecting conduit 302 is fixedly connected to the hemispherical filter 305. The hemispherical filter 305 can process more wastewater per unit time due to its larger filtration area, thereby improving filtration efficiency and increasing wastewater treatment capacity. A pre-treated wastewater collection box 306 is provided at the end of the inverted L-shaped conduit 304 away from the connecting conduit 302. An L-shaped filter plate 307 is provided on the side of the pre-treated wastewater collection box 306 close to the first conduit 303. The L-shaped filter plate 307 forms a layer by cooperating with the pre-treated wastewater collection box 306. While collecting impurities and flocs, the wastewater remaining with impurities and flocs flows into the pre-treated wastewater collection box 306 under the influence of gravity. The width of the L-shaped filter plate 307 is consistent with the width of the pre-treated wastewater collection box 306.

[0038] The working principle of this embodiment is as follows: the incoming wastewater is directed toward the inverted L-shaped conduit 304 through the curved tapered conduit 301. The flow rate of the wastewater is further enhanced in the process of flowing toward the inverted L-shaped conduit 304. After the wastewater flows out of the curved tapered conduit 301, the flow rate of the wastewater is doubly enhanced by the air pressure acceleration device 102 and the curved tapered conduit 301. Therefore, the wastewater collides with the hemispherical filter 305 under the action of inertia, and then the impurities and flocs in the wastewater are blocked by the hemispherical filter 305. The impurities and flocs blocked by the hemispherical filter 305 fall through the first conduit 303 to the top of the L-shaped filter plate 307 under the influence of gravity. The wastewater filtered by the hemispherical filter 305 flows into the inverted L-shaped conduit 304, and then flows into the pre-treated wastewater collection tank 306 through the inverted L-shaped conduit 304.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device for leather auxiliary production, comprising a step-by-step stirring mechanism (1), characterized in that: The bottom of the step-by-step feeding and stirring mechanism (1) is fixedly connected to a first support rod (2), and the bottom of the step-by-step feeding and stirring mechanism (1) is fixedly connected to a diversion and collection mechanism (3); The step-by-step dosing and stirring mechanism (1) comprises an inverted conical wastewater storage tank (101), a gas pressure acceleration device (102) fixedly connected to the top of the inverted conical wastewater storage tank (101), a step-by-step dosing device (103) fixedly connected to the top of the inverted conical wastewater storage tank (101), and a gradually expanding stirring device (104) fixedly connected inside the inverted conical wastewater storage tank (101).

2. A wastewater treatment device for leather auxiliary production according to claim 1, characterized in that: The inverted conical wastewater storage tank (101) is provided with a first opening (1011) at the top, a first fixing rod (1012) is fixedly connected inside the first opening (1011), and a matching block (1013) is fixedly connected to one end of the first fixing rod (1012) away from the first opening (1011). The inverted conical wastewater storage tank (101) is provided with a second opening (1014) at the top, a water inlet opening (1015) is provided on the cylindrical surface of the inverted conical wastewater storage tank (101), and a water outlet opening (1016) is provided at the bottom of the inverted conical wastewater storage tank (101), and a telescopic opening and closing device (1017) is fixedly connected inside the water outlet opening (1016).

3. The wastewater treatment device for leather auxiliary production according to claim 1, characterized in that: The air pressure acceleration device (102) comprises a first cylinder (1021), a first connecting rod (1022) is fixedly connected inside the first cylinder (1021), an end of the first connecting rod (1022) close to the axis of the first cylinder (1021) is fixedly connected to a first rotating device (1023), an output shaft end face of the first rotating device (1023) is fixedly connected to a first connecting rod (1024), and an end face of the first connecting rod (1024) away from the first rotating device (1023) is fixedly connected to the output shaft end face of the first rotating device (1023). The first cylinder (1021) is rotatably connected to a second connecting rod (1025) at one end thereof, and the second connecting rod (1025) is rotatably connected to a piston (1026) at one end thereof away from the first connecting rod (1024). A rectangular opening (1027) is provided on the cylindrical surface of the first cylinder (1021). An L-shaped annular stopper (1028) is fixedly connected inside the first cylinder (1021). The outer surface of the L-shaped annular stopper (1028) close to the inner wall of the first cylinder (1021) is fixedly connected to a first telescopic rod (1029).

4. The wastewater treatment device for leather auxiliary production according to claim 1, characterized in that: The step-by-step delivery device (103) comprises a second cylinder (1031), the bottom of the second cylinder (1031) is fixedly connected to a threaded rotation device (1032), and the surface of the threaded rod of the threaded rotation device (1032) is threadedly connected to a second stopper (1033).

5. The wastewater treatment device for leather auxiliary production according to claim 1, characterized in that: The gradually expanding stirring device (104) comprises a second rotating device (1041), and a gradually expanding fan plate (1042) is fixedly connected to the surface of the output shaft of the second rotating device (1041).

6. The wastewater treatment device for leather auxiliary production according to claim 1, characterized in that: The diversion and collection mechanism (3) comprises a curved tapered conduit (301), one end of the curved tapered conduit (301) away from the axis of the inverted conical wastewater storage tank (101) is fixedly connected to a connecting conduit (302), a bottom of the connecting conduit (302) is fixedly connected to a first conduit (303), one end of the connecting conduit (302) away from the curved tapered conduit (301) is fixedly connected to an inverted L-shaped conduit (304), one end of the inverted L-shaped conduit (304) close to the connecting conduit (302) is fixedly connected to a hemispherical filter screen (305), one end of the inverted L-shaped conduit (304) away from the connecting conduit (302) is provided with a pre-treated wastewater collection tank (306), and an L-shaped filter plate (307) is provided on one side of the pre-treated wastewater collection tank (306) close to the first conduit (303).

7. The wastewater treatment device for leather auxiliary agent production according to claim 2, characterized in that: The axis of the first opening (1011) coincides with the axis of the first cylinder (1021); the diameter of the matching block (1013) coincides with the inner diameter of the L-shaped annular stopper (1028); the axis of the second opening (1014) coincides with the axis of the second cylinder (1031); the axis of the first opening (1011) and the axis of the second opening (1014) are symmetrical to each other along the axis of the inverted conical wastewater storage tank (101); and the diameter of the water outlet opening (1016) coincides with the inner diameter of the larger end of the curved tapered conduit (301).

8. The wastewater treatment device for leather auxiliary agent production according to claim 3, characterized in that: The diameter of the piston (1026) is consistent with the diameter of the inner wall of the first cylinder (1021), the piston (1026) is slidably connected to the first cylinder (1021), the outer surface diameter of the L-shaped annular stopper (1028) is consistent with the diameter of the first cylinder (1021), the moving rod inside the first telescopic rod (1029) is L-shaped, the L-shaped moving rod inside the first telescopic rod (1029) is located inside the rectangular opening (1027), and the bottom of the first telescopic rod (1029) is fixedly connected to the top of the inverted cone-shaped wastewater storage tank (101).

9. The wastewater treatment device for leather auxiliary production according to claim 6, characterized in that: The first conduit (303) is located above the L-shaped filter plate (307). The width of the L-shaped filter plate (307) is consistent with the width of the pre-treated wastewater collection box (306). The inverted L-shaped conduit (304) is inclined at a certain angle. There is a gap between the first conduit (303) and the inverted L-shaped conduit (304).

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