Purifying equipment for wood dyeing sewage and use method of purifying equipment

Abstract

The invention belongs to the technical field of sewage treatment, and discloses a purification device for timber dyeing sewage and a using method thereof.The purification device comprises a water distribution bin, a rotational flow guiding bin and a buffering bin which are sequentially communicated, and the water distribution bin collects power of water flow and transmits the power to the rotational flow guiding bin through mechanical linkage; external power is not needed to drive the rotational flow and the adsorption assembly, the energy consumption of equipment is reduced, the low-cost production requirement of small timber processing enterprises is met, the rotational flow guide bin can generate a spiral flow state to achieve solid-liquid pre-separation, wood chips and suspended impurities in sewage are effectively intercepted, meanwhile, the axial impact force of water flow is weakened, the indirect buffering and flow stabilizing effects are achieved, and the service life of the equipment is prolonged. An elastic buffer structure formed by the ejector rod, the second spring and the bearing plate can directly counteract the impact force of water flow on the adsorption filler frame and the adsorption cavity, so that the adsorption filler is prevented from being damaged, the adsorbent is prevented from falling off and hardening, and the service life of the adsorption structure and the adsorbent is prolonged.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a purification device for wastewater from wood dyeing and its usage method. Background Technology

[0002] In the wood processing industry, wood dyeing is a key process to enhance the added value of wood. The dyeing process generates a large amount of wood dyeing wastewater. This type of wastewater has a complex composition, mainly including unattached dye molecules, pigments, fine wood chips produced during wood processing, suspended impurities, and residues of auxiliary agents added in the dyeing process. Direct discharge will cause serious water pollution and does not meet environmental protection emission requirements. Therefore, wastewater pretreatment is an indispensable and important step in the wood dyeing production process.

[0003] Currently, the industry mostly uses adsorption purification technology for the pretreatment of wood dyeing wastewater. The core of existing adsorption purification equipment is to adsorb dye molecules and organic pollutants in wastewater through adsorbents to achieve preliminary purification of wastewater.

[0004] In some existing purification equipment, wastewater from wood dyeing is pressurized by a pump and then directly impacts the adsorption structure at a high flow rate. The impact force of the water flow directly acts on the adsorption packing, which can easily cause the adsorption packing to break and fall off. At the same time, it will destroy the integrity of the adsorption structure, causing the adsorbent to clump and fail, which will greatly shorten the service life of the adsorption structure and the adsorbent. Consequently, it is necessary to frequently stop the machine to replace the adsorbent and repair the adsorption structure.

[0005] Based on the shortcomings of the existing technology, there is an urgent need for a wastewater treatment device for wood dyeing that can solve the problems of easily damaged adsorption structures, high energy consumption, and unstable purification effects, and achieve efficient and low-cost pretreatment of wastewater. Summary of the Invention

[0006] This invention provides a purification device for wastewater from wood dyeing. The invention uses a three-stage linkage mechanism of power acquisition, cyclone separation, and elastic buffering to reduce the impact of water flow and impurities on the adsorption structure, thereby achieving efficient and low-cost pretreatment of wastewater. The entire process relies on the power of the water flow collected in the water distribution tank, which is transmitted through mechanical linkage. There is no need for external motors or other power to drive the cyclone and adsorption components, thus reducing the energy consumption of the equipment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a purification device for wood dyeing wastewater, the purification device comprising: a water distribution chamber (1), a vortex guide chamber (2), and a buffer chamber (3) connected in sequence; the water distribution chamber (1) is used to collect water flow power and transmit it to the vortex guide chamber (2), the water distribution chamber (1) is provided with a crossbar (101) for power collection and an arc-shaped water distribution plate (102) inside the water distribution chamber (1), and an eccentric wheel (103) for power transmission is fixedly connected to the end of the crossbar (101); the vortex guide chamber (2) is used to generate vortex to achieve solid-liquid pre-separation, the vortex guide chamber... (2) The interior is provided with a cylinder (202) for receiving power, a circular plate (203), and a blade shaft (207) and an arc blade (208) for generating swirl; the buffer chamber (3) is used to elastically buffer the water flow and perform stratified adsorption purification of sewage. The interior is provided with a top rod (303), a second spring (304) and a pressure plate (302) for elastic buffering, and an adsorption packing frame (306) and an adsorption chamber (308) for stratified adsorption. The purification equipment relies on the water flow power collected by the water distribution chamber (1) throughout the process and transmits power through mechanical linkage. There is no need for external power to drive the swirl and adsorption components.

[0008] As a further improvement of the present invention: the crossbar (101) is rotatably connected to the inner wall of the water distribution chamber (1) through a bearing, and four arc-shaped water distribution plates (102) are provided. The four arc-shaped water distribution plates (102) are evenly fixedly arranged around the crossbar (101), and the concave surface of the arc-shaped water distribution plates (102) faces the top of the water distribution chamber (1). The end of the eccentric wheel (103) away from the crossbar (101) is hinged to a crank (104), and the end of the crank (104) away from the eccentric wheel (103) is hinged to a piston plate (106). A sealing cylinder (105) is fixedly provided on the outer surface of the vortex guide chamber (2). The piston plate (106) is slidably fitted on the inner wall of the sealing cylinder (105). A guide pipe (107) is connected between the sealing cylinder (105) and the cylinder (202) to realize power transmission.

[0009] As a further improvement of the present invention: the swirl guide chamber (2) is further provided with a support plate (201), a first spring (205), a push rod (204) and a transmission plate (206); the cylinder (202) is fixedly embedded in the inner wall of the support plate (201), and the cylinder (202) is connected to the end of the air guide pipe (107) away from the sealing cylinder (105); the circular plate (203) is slidably fitted to the inner wall of the cylinder (202); the first spring (205) is provided on the side of the circular plate (203) away from the air guide pipe (107); one end of the push rod (204) is fixedly connected to the circular plate (203), and the other end is hinged to the transmission plate (206).

[0010] As a further improvement of the present invention: the transmission plate (206) is fixedly connected to the blade shaft (207), and the two arc-shaped blades (208) are symmetrically fixed on the blade shaft (207). The arc-shaped blades (208) can drive the water flow to form a spiral flow by reciprocating, which has the functions of solid-liquid pre-separation and indirect buffering and stabilizing flow.

[0011] As a further improvement of the present invention: the buffer chamber (3) is further provided with four cylinders (301), four sleeves (307) and four bottom plates (305); there are four top rods (303), four second springs (304) and four pressure plates (302). The four cylinders (301) are evenly fixed to the inner wall of the buffer chamber (3), and the four pressure plates (302) are respectively slidably fitted to the inner wall of the four cylinders (301). The top of the pressure plate (302) is fixedly connected to the bottom of the top rod (303), and the four top rods (303) are respectively embedded in the adsorption packing frame (306) near the four corners.

[0012] As a further improvement of the present invention: the four sleeves (307) are respectively threaded onto the outer surfaces of the four push rods (303), the four base plates (305) are respectively fixedly sleeved onto the outer surfaces of the four push rods (303), and the four second springs (304) are respectively movably sleeved onto the outer surfaces of the four push rods (303), and the two ends of the second springs (304) respectively abut against the bottom of the pressure plate (302) and the inner wall of the bottom of the sleeve (307).

[0013] As a further improvement of the present invention: the adsorption packing frame (306) is movably embedded in the inner wall of the buffer chamber (3), and the adsorption chamber (308) adopts a layered filling structure, which is divided into a coarse filtration adsorption layer (3081), a deep adsorption layer (3082) and a fine filtration adsorption layer (3083) from top to bottom. The coarse filtration adsorption layer (3081), the deep adsorption layer (3082) and the fine filtration adsorption layer (3083) are filled independently, and adjacent layers are separated by a stainless steel filter screen, which is fixed to the inner wall of the adsorption chamber (308).

[0014] As a further improvement of the present invention: the coarse filtration adsorption layer (3081) is filled with modified zeolite particles to intercept a small amount of fine impurities carried in the water flow and to initially buffer the impact force of the water flow; the deep adsorption layer (3082) is filled with granular activated carbon to adsorb pollutants such as residual dye molecules and pigments in the sewage; and the fine filtration adsorption layer (3083) is filled with activated carbon fibers to adsorb trace organic pollutants such as small molecule organic acids in the sewage, thereby achieving graded purification.

[0015] As a further improvement of the present invention: the top of the water distribution chamber (1) is connected to an inlet pipe (108), one end of the inlet pipe (108) is equipped with a pump (109), the bottom of the buffer chamber (3) is connected to an outlet pipe (309), and the water distribution chamber (1), the vortex guide chamber (2) and the buffer chamber (3) are fixedly connected by a flange-type connection structure to form a closed-loop pretreatment channel.

[0016] A method for using a purification device for wood dyeing wastewater, applied to the above-mentioned purification device for wood dyeing wastewater, S1: Start the pump (109), the wood dyeing wastewater that has been preliminarily filtered is pressurized and sucked in by the pump (109), and transported to the inside of the water distribution chamber (1) through the water inlet pipe (108) on one side of the water distribution chamber (1);

[0017] S2: The high-speed water flow impacts the concave surface of the arc-shaped water distribution plate (102). The impact force of the water flow drives the crossbar (101) to rotate. The crossbar (101) drives the eccentric wheel (103) at the end to make a circular motion in sync. The circular motion is converted into the piston plate (106) moving in a straight line along the inner wall of the sealing cylinder (105) through the crank (104).

[0018] S3: When the piston plate (106) moves downward, the gas inside the sealing cylinder (105) is compressed. The high-pressure gas is transported through the air guide pipe (107) to the cylinder (202) of the vortex guide chamber (2), pushing the circular plate (203) to move away from the air guide pipe (107) along the inner wall of the cylinder (202) and squeezing the first spring (205). The circular plate (203) drives the transmission plate (206) to move through the push rod (204), which in turn drives the blade shaft (207) to drive the arc blade (208) to swing to one side. When the piston plate (106) moves upward, a negative pressure is formed inside the sealing cylinder (105), and the gas pressure inside the cylinder (202) decreases. The first spring (205) elastically resets and pushes the circular plate (203) to move in the opposite direction, driving the arc blade (208) to swing to the other side. The arc blade (208) swings back and forth, driving the water flow to form a spiral flow state. Impurities are thrown towards the chamber wall by centrifugal force and slide down.

[0019] S4: After solid-liquid pre-separation, the water flows smoothly into the buffer chamber (3) and along the inner wall of the buffer chamber (3) to the adsorption packing frame (306). When the water impacts the adsorption packing frame (306), it drives the pressure plate (302) to slide down along the inner wall of the cylinder (301). The pressure plate (302) squeezes the second spring (304) to cause it to undergo elastic deformation. The second spring (304) generates a reverse elastic force, which offsets most of the water impact force, so that the adsorption packing frame (306) only produces a small displacement.

[0020] S5: Water flows through the adsorption chamber (308) inside the adsorption packing frame (306), and passes through the coarse filtration adsorption layer (3081), the deep adsorption layer (3082), and the fine filtration adsorption layer (3083) in sequence to achieve graded purification. The pretreated wastewater after purification is discharged through the outlet pipe (309) on one side of the buffer tank (3) and enters the subsequent deep treatment process.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0022] This invention collects the inherent power of the water flow through a water distribution chamber and transmits it to the vortex guide chamber via mechanical linkage. It eliminates the need for external power to drive the vortex and adsorption components, reducing equipment energy consumption and meeting the low-cost production needs of small wood processing enterprises. The vortex guide chamber can generate a spiral flow to achieve solid-liquid pre-separation, effectively trapping sawdust and suspended impurities in wastewater. At the same time, it weakens the axial impact force of the water flow, playing an indirect buffering and stabilizing role. The elastic buffer structure composed of the top rod, the second spring, and the pressure plate can directly offset the impact force of the water flow on the adsorption packing frame and adsorption chamber, avoiding damage to the adsorption packing and adsorbent shedding and caking, and extending the service life of the adsorption structure and adsorbent. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating a purification device and its usage method for wood dyeing wastewater, as proposed in this application.

[0024] Figure 2 This is a cross-sectional view of the buffer compartment in an embodiment of this application.

[0025] Figure 3 The images show an overall view of the adsorption packing frame and a cross-sectional view of the cylinder in the embodiments of this application.

[0026] Figure 4 This is a cross-sectional view of the vortex guide chamber in an embodiment of this application.

[0027] Figure 5 This is a cross-sectional view of the cylinder in an embodiment of this application.

[0028] Figure 6 This is a cross-sectional view of the water distribution tank in an embodiment of this application.

[0029] Figure 7 This is a cross-sectional view of the sealing cylinder in an embodiment of this application.

[0030] Figure 8 For this application Figure 4 Enlarged view of point A in the middle.

[0031] Figure 9 This is a diagram showing the internal structure of the adsorption cavity in an embodiment of this application.

[0032] Legend: 1. Water distribution chamber; 101. Crossbar; 102. Arc-shaped water distribution plate; 103. Eccentric wheel; 104. Crank; 105. Sealing cylinder; 106. Piston plate; 107. Air guide pipe; 108. Water inlet pipe; 109. Pump; 2. Swirl guide chamber; 201. Support plate; 202. Cylinder; 203. Circular plate; 204. Push rod; 205. First spring; 206. Transmission plate; 207. Blade shaft; 208. Arc-shaped blade; 3. Buffer chamber; 301. Cylinder; 302. Pressure plate; 303. Top rod; 304. Second spring; 305. Bottom plate; 306. Adsorption packing frame; 307. Sleeve; 308. Adsorption chamber; 309. Water outlet pipe; 3081. Coarse filtration adsorption layer; 3082. Deep adsorption layer; 3083. Fine filtration adsorption layer. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the pretreatment of wastewater from wood dyeing, the adsorption structure is easily damaged by the impact of water flow, which is the most prominent pain point of existing equipment. Specifically, when wastewater flows through the adsorption structure, the direct impact force of the water flow will directly act on the adsorption structure, easily causing damage to the adsorption packing. At the same time, the direct impact of the water flow will destroy the integrity of the adsorption structure and prevent the adsorbent from functioning properly, significantly shortening the service life of the adsorption structure and adsorbent. Frequent shutdowns are required to replace the adsorbent and repair the adsorption structure, which seriously affects the continuity of pretreatment, increases equipment maintenance costs and labor costs, and the damaged adsorption structure cannot achieve effective graded purification, making it difficult to meet the standards for wastewater pretreatment.

[0035] Therefore, in response to the above-mentioned technical problems, this application provides a purification device for wood dyeing wastewater. The core improvement is to provide targeted buffer protection for the adsorption structure. First, the flow pattern of the water is changed by swirling to weaken the axial impact force of the water flow. Then, the direct impact force of the water flow on the adsorption structure is offset by the elastic structure, which avoids damage to the adsorption packing and destruction of the integrity of the adsorption structure, and prevents the adsorbent from failing to function properly. This extends the service life of the adsorption structure and the adsorbent, and solves the problem of difficulty in achieving the pretreatment effect of wastewater.

[0036] The purification equipment provided in this application is described below.

[0037] Figure 1This is a schematic diagram of the scenario of Embodiment 1 of this application, showing the overall structural layout of the purification equipment, demonstrating the assembly relationship of the water distribution chamber (1), the vortex guide chamber (2) and the buffer chamber (3), as well as the connection method of each chamber to the inlet pipe (108), the pump (109) and the outlet pipe (309).

[0038] Figure 2 This is a cross-sectional view of the buffer chamber 3 in an embodiment of this application, showing the internal structure of the buffer chamber 3.

[0039] like Figure 1 and Figure 2 As shown, the purification equipment includes a water distribution chamber (1), a vortex guide chamber (2), and a buffer chamber (3) connected in sequence. The top of the water distribution chamber (1) is connected to an inlet pipe (108), and a pump (109) is installed at one end of the inlet pipe (108) to pressurize and transport the wood dyeing wastewater into the water distribution chamber (1). The bottom of the buffer chamber (3) is connected to an outlet pipe (309) to discharge the purified wastewater to the subsequent deep treatment process. The water distribution chamber (1), the vortex guide chamber (2), and the buffer chamber (3) are fixedly connected by a flange connection structure. The flange connection method facilitates the disassembly and maintenance of the equipment, while ensuring the sealing of the connection of each chamber to prevent wastewater leakage. The three work together to form a closed-loop pretreatment channel to ensure that the wastewater passes through the three processes of dynamic collection, solid-liquid pre-separation, and elastic buffer adsorption in sequence to achieve efficient pretreatment.

[0040] (I) Water distribution chamber (1): Power acquisition and transmission

[0041] Figure 6 This is a cross-sectional view of the water distribution tank 1 in this embodiment of the application, showing the structure of its internal components.

[0042] Figure 7 This is a cross-sectional view of the sealing cylinder (105), illustrating the fit between the sealing cylinder (105) and the piston plate (106).

[0043] like Figure 2 , Figure 6 and Figure 7 As shown, the water distribution chamber (1) is used to collect water flow power and transmit it to the vortex guide chamber (2) to provide power for vortex generation. It does not require an external power source such as a motor. Inside, there is a crossbar (101) for power collection and an arc-shaped water distribution plate (102). The end of the crossbar (101) is fixedly connected to an eccentric wheel (103) for power transmission. The eccentric wheel (103) is used to convert the rotational motion of the crossbar (101) into linear reciprocating motion to achieve effective power transmission.

[0044] Specifically, the crossbar (101) is rotatably connected to the inner wall of the water distribution chamber (1) through a bearing. There are four arc-shaped water distribution plates (102). The four arc-shaped water distribution plates (102) are evenly fixedly arranged around the crossbar (101), and the concave surface of the arc-shaped water distribution plate (102) faces the top of the water distribution chamber (1) and corresponds to the outlet of the water inlet pipe (108). This allows the water flow to fully utilize the impact force when it impacts the concave surface of the arc-shaped water distribution plate (102) at high speed, and decompose it into a torque that drives the crossbar (101) to rotate, thereby improving the efficiency of power collection.

[0045] It should be noted that the dimensions and curvature of the four arc-shaped water distribution plates (102) must be consistent to ensure that the crossbar (101) is subjected to balanced force and to avoid the crossbar (101) from getting stuck or experiencing torque fluctuations due to the size deviation of a single water distribution plate, which would affect the stability of power transmission.

[0046] Furthermore, a crank (104) is hinged to the end of the eccentric wheel (103) away from the crossbar (101), and a piston plate (106) is hinged to the end of the crank (104) away from the eccentric wheel (103). A sealing cylinder (105) is fixedly provided on the outer surface of the swirling guide chamber (2). The sealing cylinder (105) is used to provide sliding space for the piston plate (106) and at the same time ensure the sealing of the internal gas. The piston plate (106) slides against the inner wall of the sealing cylinder (105). A sealing gasket is provided between the piston plate (106) and the inner wall of the sealing cylinder (105) to enhance the sealing performance and prevent gas leakage from causing power transmission loss. A gas guide pipe (107) is connected between the sealing cylinder (105) and the cylinder (202) to transport the high-pressure gas in the sealing cylinder (105) to the cylinder (202) to realize power transmission.

[0047] (II) Swirl Guide Chamber (2): Solid-Liquid Pre-Separation and Indirect Buffering

[0048] Figure 4 This is a cross-sectional view of the vortex guide chamber (2), showing the layout of its internal power receiving and vortex generating components.

[0049] Figure 5 This is a cross-sectional view of cylinder 202, showing the assembly diagram of the internal circular plate (203) and the first spring (205) of cylinder (202).

[0050] Figure 8 for Figure 4 Enlarged view at point A in the middle, detailing the connection between the transmission plate (206) and the blade shaft (207).

[0051] like Figure 1 , Figure 4 , Figure 5 and Figure 8As shown, the swirling guide chamber (2) is used to generate swirling flow to achieve solid-liquid pre-separation, while weakening the impact force of water flow and playing an indirect buffering and stabilizing role, providing protection for the adsorption structure of the subsequent buffer chamber (3). Inside it are a cylinder (202) for power reception, a circular plate (203), and a blade shaft (207) and an arc blade (208) for generating swirling flow.

[0052] Specifically, the swirl guide chamber (2) is also provided with a support plate (201), a first spring (205), a push rod (204) and a transmission plate (206); the support plate (201) is fixed to the inner wall of the swirl guide chamber (2), the cylinder (202) is fixedly embedded in the inner wall of the support plate (201), and the cylinder (202) is connected to the end of the air guide pipe (107) away from the sealing cylinder (105) for receiving the high-pressure gas delivered by the sealing cylinder (105). The circular plate (203) is slidably fitted to the inner wall of the cylinder (202), and a sealing gasket is also provided between the circular plate (203) and the inner wall of the cylinder (202) to prevent gas leakage. The first spring (205) is located on the side of the circular plate (203) away from the air guide pipe (107) for realizing the elastic reset of the circular plate (203) and ensuring that the arc blade (208) can realize reciprocating swing.

[0053] It should be noted that the arc of the curved blade (208) is 30°-60°. The elastic coefficient of the first spring (205) should be reasonably selected according to the magnitude of the water flow. If the elastic coefficient is too large, the circular plate (203) cannot be moved effectively. If the elastic coefficient is too small, the curved blade (208) cannot be driven to swing with a sufficient amplitude, which will affect the vortex generation effect.

[0054] Furthermore, one end of the push rod (204) is fixedly connected to the circular plate (203), and the other end is hingedly connected to the transmission plate (206). The hinged connection allows the push rod (204) and the transmission plate (206) to swing at a certain angle, ensuring smooth power transmission. The transmission plate (206) is fixedly connected to the blade shaft (207), and the two arc-shaped blades (208) are symmetrically fixed on the blade shaft (207). When the arc-shaped blades (208) swing back and forth, they can drive the water flow to form a stable flow. The spiral flow pattern has both solid-liquid pre-separation and indirect buffering and stabilizing functions. In addition, the bottom of the cyclone guide chamber (2) is equipped with a slag accumulation area. The slag accumulation area is located at the angle between the bottom of the chamber and the chamber wall, which does not affect the reciprocating swing of the arc blade (208). Moreover, the spiral flow pattern of the water flow can avoid impurities from clogging and ensure the continuous and stable operation of the equipment. The slag accumulation area is used to collect suspended impurities that slide down the chamber wall after cyclone separation. It should be noted that the slag accumulation area needs to be cleaned regularly to avoid excessive accumulation of impurities that block the water flow channel and affect the operating efficiency of the equipment.

[0055] (III) Buffer Chamber (3): Elastic Buffering and Layered Adsorption Purification

[0056] Figure 3 This is an overall view of the adsorption packing frame and a cross-sectional view of the cylinder, used to show the fit between the adsorption packing frame (306) and the cylinder (301).

[0057] Figure 5 This is a cross-sectional view of the cylinder, showing the assembly details of the internal circular plate (203) and the first spring (205) of the cylinder (202).

[0058] Figure 9 The diagram shows the internal structure of the adsorption chamber (308), illustrating the layered adsorption structure inside the adsorption chamber.

[0059] like Figure 1 , Figure 3 and Figure 9 As shown, the buffer chamber (3) is used to elastically buffer the water flow and perform stratified adsorption and purification of sewage. It is the core structure that protects the adsorption structure. Inside it are four top rods (303), four second springs (304) and four pressure plates (302) for elastic buffering, and adsorption packing frame (306) and adsorption chamber (308) for stratified adsorption.

[0060] Specifically, the buffer chamber (3) is further provided with four cylinders (301), four sleeves (307), and four base plates (305). There are four top rods (303), four second springs (304), and four pressure plates (302). The four cylinders (301) are evenly fixed to the inner wall of the buffer chamber (3) to provide sliding guidance for the pressure plates (302), ensuring that the pressure plates (302) slide in the vertical direction and avoiding tilting that would result in uneven buffering effect. The four pressure plates (302) are respectively slidably fitted to the inner wall of the four cylinders (301). The size of the pressure plates (302) matches the inner diameter of the cylinders (301) to ensure smooth sliding without shaking. The top of the pressure plate (302) is fixedly connected to the bottom of the top rod (303) to transmit the water flow impact force to the second spring (304). The four top rods (303) are respectively embedded in the adsorption filler. The material rack (306) is located near the four corners and is used to support the adsorption packing frame (306) and transmit the buffering force. The four sleeves (307) are threaded onto the outer surfaces of the four top rods (303) to adjust the preload of the second spring (304) and thus adjust the buffering effect to adapt to the impact of water flow at different velocities. During use, the position of the sleeve (307) on the top rod (303) can be changed by rotating the sleeve (307), thereby changing the compression of the second spring (304). The four base plates (305) are fixedly sleeved onto the outer surfaces of the four top rods (303) to support the adsorption packing frame (306). The four second springs (304) are movably sleeved onto the outer surfaces of the four top rods (303), and the two ends of the second springs (304) abut against the bottom of the pressure plate (302) and the inner wall of the bottom of the sleeve (307) respectively. The elastic deformation offsets the impact force of the water flow and protects the adsorption structure.

[0061] It should be noted that the elastic coefficients of the four second springs (304) must be consistent to ensure that the adsorption packing frame (306) is subjected to balanced force and to avoid the adsorption packing frame (306) tilting and damaging the structure of the adsorption chamber (308) due to the deviation of the elastic coefficient of a single spring. The elastic coefficient of the second spring (304) is 8-12 N / mm.

[0062] Furthermore, the adsorption packing frame (306) is movably embedded in the inner wall of the buffer chamber (3), and can be displaced by the impact of water flow to achieve elastic buffering. A certain gap needs to be reserved between the adsorption packing frame (306) and the inner wall of the buffer chamber (3) to avoid the adsorption packing frame (306) from getting stuck due to the gap being too small, which would affect the buffering effect. The adsorption chamber (308) adopts a layered filling structure, which is divided into a coarse filtration adsorption layer (3081), a deep adsorption layer (3082), and a fine filtration adsorption layer (3083) from top to bottom. The coarse filtration adsorption layer (3081), deep adsorption layer (3082), and fine filtration adsorption layer (3083) are filled independently, and adjacent layers are separated by stainless steel filter screens. The stainless steel filter screens are fixed to the inner wall of the adsorption chamber (308). The particle size of the stainless steel filter screens matches the particle size of the adsorbent in the corresponding layer. This is to prevent the mixing of adsorbents in different layers and the loss of adsorbents with water flow. The stainless steel filter screens need to be cleaned or replaced regularly to avoid filter screen blockage, which would increase water flow resistance and affect adsorption purification efficiency and buffering effect. The pore size of the stainless steel filter screens is 0.1-0.3mm.

[0063] Furthermore, the coarse filtration adsorption layer (3081) is filled with modified zeolite particles to intercept small amounts of fine impurities carried in the water flow and to initially buffer the impact of the water flow, further weakening the impact of the water flow on the lower adsorption layer. The deep adsorption layer (3082) is filled with granular activated carbon to adsorb residual dye molecules, pigments and other pollutants in the wastewater. The fine filtration adsorption layer (3083) is filled with activated carbon fibers to adsorb trace amounts of small molecule organic acids and other trace organic pollutants in the wastewater, achieving graded purification. The adsorbents in each layer need to be replaced regularly. When the adsorbents are saturated, they can be removed and reassembled by the adsorption packing frame (306).

[0064] The wood dyeing wastewater pretreatment equipment of this invention achieves synergistic pretreatment of suspended impurities and adsorption of organic pollutants in wastewater through a three-stage linkage structure consisting of a water distribution chamber (1) for power acquisition, a cyclone guiding chamber (2) for cyclone separation, and a buffer chamber (3) for elastic buffer adsorption. The entire process relies on mechanical linkage to complete power transmission, without the need for external power to drive the cyclone and adsorption components. The specific working principle is as follows:

[0065] The power acquisition and transmission process of the water distribution chamber (1): The wood dyeing wastewater, after preliminary filtration, is drawn in by the pump (109) under pressure and then transported to the interior of the water distribution chamber (1) through the inlet pipe (108). The arc-shaped water distribution plate (102) is evenly distributed around the crossbar (101), and the concave surface of the arc-shaped water distribution plate (102) faces the outlet of the inlet pipe (108). When the water flow impacts the concave surface of the arc-shaped water distribution plate (102) at high speed, the impact force of the water flow is decomposed into a normal component perpendicular to the concave surface. This component force acts on the crossbar. The rod (101) generates a continuous rotational torque, driving the crossbar (101) to rotate. The four arc-shaped water distribution plates (102) can increase the water flow contact area, making the crossbar (101) bear force evenly, avoiding torque fluctuations caused by a single or double water distribution plate, and improving the stability of power output. At the same time, the diversion effect of the multiple water distribution plates can weaken the kinetic energy of the water flow directly hitting the chamber wall, reduce the wear of the inner wall of the water distribution chamber (1), and indirectly reduce the amount of impurity particles entrained in subsequent processes, laying the foundation for mitigating the impact on the adsorption chamber (308).

[0066] Swirl generation and impurity pre-separation process in swirling guide chamber (2): When the crossbar (101) rotates, it drives the eccentric wheel (103) fixed at its end to make a synchronous circular motion. Since the two ends of the crank (104) are hinged to the eccentric wheel (103) and the piston plate (106) respectively, the circular motion of the eccentric wheel (103) is converted into the linear reciprocating motion of the piston plate (106) along the inner wall of the sealing cylinder (105) through the crank (104). When the piston plate (106) moves downward, the gas in the inner cavity of the sealing cylinder (105) is compressed, and the high-pressure gas passes through the gas guide pipe ( 107) The cylinder (202) inside the cyclone guide chamber (2) is conveyed to the cylinder (202), pushing the circular plate (203) forward along the inner wall of the cylinder (202). The circular plate (203) simultaneously squeezes the first spring (205) and pushes the transmission plate (206) through the push rod (204), driving the blade shaft (207) to drive the two arc-shaped blades (208) to swing to one side. When the piston plate (106) moves upward, a negative pressure is formed in the inner cavity of the sealing cylinder (105), the air pressure in the cylinder (202) decreases, and the elastic restoring force of the first spring (205) pushes the circular plate (207) to move forward. 203) Reset, driving the push rod (204) and transmission plate (206) to move in the opposite direction, causing the arc-shaped blade (208) to swing to the other side. The reciprocating swing of the arc-shaped blade (208) drives the water flow in the vortex guide chamber (2) to form a spiral flow. Under the action of centrifugal force, the suspended impurities such as wood chips and dye particles with higher density in the sewage are thrown towards the chamber wall. The impurities slide down the side wall under the action of gravity and naturally accumulate in the dead corner area at the bottom of the chamber, such as the angle between the bottom of the chamber and the chamber wall. This area is the sludge accumulation area, realizing solid-liquid pre-separation and greatly reducing the impact of solid particles in the subsequent water flow on the solids. The physical impact of the adsorption chamber (308) and the slag accumulation area located at the angle between the bottom of the chamber and the wall of the chamber do not affect the reciprocating oscillation of the arc blades (208). Moreover, the spiral flow of the water can avoid the blockage of impurities and ensure the continuous and stable operation of the equipment. At the same time, the water flow entering the vortex guide chamber (2) is decomposed into circumferential tangential force and radial centrifugal force, which originally directly impacted the subsequent adsorption chamber (308). This makes the water flow velocity distribution uniform, weakens the instantaneous impact force of the local water flow, and avoids the water flow directly impacting the adsorption packing frame (306), thus playing an indirect buffering and flow stabilizing effect.

[0067] The elastic buffering and adsorption purification process of the buffer chamber (3): After being pre-separated by the vortex guide chamber (2), the water flows smoothly into the interior of the buffer chamber (3) and flows along the inner wall of the buffer chamber (3) to the built-in adsorption packing frame (306). Four sleeves (307) are threaded on the outer surface of the top rod (303) to adjust the preload of the second spring (304) and thus adjust the buffering effect. When the water flow impacts the adsorption packing frame (306), the adsorption packing frame (306) is subjected to the downward water flow impact force, which simultaneously drives the pressure plate (302) to slide down along the inner wall of the cylinder (301). During the downward movement of the pressure plate (302), the second spring (304) is squeezed. The second spring (304) undergoes elastic deformation. According to the principle of elasticity, the second spring (304) will generate an elastic reverse force opposite to the direction of the water flow impact force. This elastic reverse force can offset most of the water flow impact force, causing the adsorption packing frame (306) to only undergo a small displacement, avoiding its violent vibration, and thus ensuring the structural stability of the adsorption chamber (308) and the internal coarse filtration adsorption layer (3081), deep adsorption layer (3082), and fine filtration adsorption layer (3083). When the water flow penetrates the adsorption chamber (308) inside the adsorption packing frame (306), the adsorption chamber (308) adopts a layered filling structure, which is divided into coarse filtration adsorption layer from top to bottom. The system consists of three layers: a coarse filtration layer (3081), a deep adsorption layer (3082), and a fine filtration layer (3083). The three layers of adsorbent are independently filled and separated by stainless steel mesh to prevent mixing of different adsorbent layers and loss of adsorbent with the water flow. Specifically, the coarse filtration layer (3081) is filled with modified zeolite particles to trap small impurities carried by the water flow, initially buffering the impact of the water flow and further weakening its impact on the lower adsorption layers. The deep adsorption layer (3082) is filled with granular activated carbon to adsorb residual dye molecules, pigments, and other pollutants in the wastewater. The fine filtration layer (3083) is filled with activated carbon fibers to adsorb small-molecule organic acids and other microorganisms in the wastewater. The water flow passes through different functional adsorption layers in sequence, which not only extends the overall service life of the adsorbent, but also forms a double protection with the elastic buffer structure of the buffer chamber (3) through the synergistic effect of each layer, significantly reducing the impact of water flow and impurities on the adsorption chamber (308). The water flow velocity after elastic buffering is stable, effectively extending the contact time between the water flow and the adsorbent in the coarse filtration adsorption layer (3081), deep adsorption layer (3082), and fine filtration adsorption layer (3083), significantly improving the adsorption and purification efficiency. At the same time, it can prevent the adsorbent in each adsorption layer from falling off or caking due to the impact of water flow, further extending the service life of the adsorbent.

[0068] Finally, the pretreated wastewater, after adsorption and purification, is discharged from the buffer tank (3) through the effluent pipe (309) and enters the subsequent deep treatment process.

[0069] In summary, this equipment achieves efficient operation of wastewater pretreatment through a linkage mechanism of power acquisition, cyclone separation, and elastic buffering. It can reduce the impact damage of water flow and impurities on the adsorption chamber (308) and improve the overall operational stability and adsorption treatment efficiency of the equipment.

[0070] The above-mentioned models are all commercially available products in the prior art. This application is only used as an example of an embodiment and does not limit the use of other equivalent models.

[0071] All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A purification device for wastewater from wood dyeing, characterized in that, The purification equipment includes: a water distribution chamber (1), a vortex guide chamber (2), and a buffer chamber (3) connected in sequence; The water distribution chamber (1) is used to collect water flow power and transmit it to the vortex guide chamber (2). The water distribution chamber (1) is equipped with a crossbar (101) for power collection and an arc-shaped water distribution plate (102). The end of the crossbar (101) is fixedly connected to an eccentric wheel (103) for power transmission. The swirling guide chamber (2) is used to generate swirling flow to achieve solid-liquid pre-separation. The swirling guide chamber (2) is equipped with a cylinder (202) for power reception, a circular plate (203), and a blade shaft (207) and an arc blade (208) for generating swirling flow. The buffer chamber (3) is used to elastically buffer the water flow and perform stratified adsorption and purification of sewage. It is equipped with a top rod (303), a second spring (304) and a pressure plate (302) for elastic buffering, and an adsorption packing frame (306) and an adsorption chamber (308) for stratified adsorption.

2. The purification equipment for wood dyeing wastewater according to claim 1, characterized in that: The crossbar (101) is rotatably connected to the inner wall of the water distribution chamber (1) via a bearing. There are four arc-shaped water distribution plates (102). The four arc-shaped water distribution plates (102) are evenly fixedly arranged around the crossbar (101), and the concave surface of the arc-shaped water distribution plates (102) faces the top of the water distribution chamber (1). The end of the eccentric wheel (103) away from the crossbar (101) is hinged to a crank (104). The end of the crank (104) away from the eccentric wheel (103) is hinged to a piston plate (106). A sealing cylinder (105) is fixedly provided on the outer surface of the vortex guide chamber (2). The piston plate (106) slides in cooperation with the inner wall of the sealing cylinder (105). A guide pipe (107) is connected between the sealing cylinder (105) and the cylinder (202) to realize power transmission.

3. The purification equipment for wood dyeing wastewater according to claim 2, characterized in that: The swirling guide chamber (2) is also equipped with a support plate (201), a first spring (205), a push rod (204) and a transmission plate (206). The cylinder (202) is fixedly embedded in the inner wall of the support plate (201), and the cylinder (202) is connected to the end of the air guide pipe (107) away from the sealing cylinder (105). The circular plate (203) is slidably fitted on the inner wall of the cylinder (202). The first spring (205) is set on the side of the circular plate (203) away from the air guide pipe (107). One end of the push rod (204) is fixedly connected to the circular plate (203), and the other end is hinged to the transmission plate (206).

4. The purification equipment for wood dyeing wastewater according to claim 3, characterized in that: The transmission plate (206) is fixedly connected to the blade shaft (207), and the two arc-shaped blades (208) are symmetrically fixed on the blade shaft (207). The arc-shaped blades (208) can drive the water flow to form a spiral flow by reciprocating, which has the functions of solid-liquid pre-separation and indirect buffering and stabilizing flow.

5. The purification equipment for wood dyeing wastewater according to claim 1, characterized in that: The buffer chamber (3) is also equipped with four cylinders (301), four sleeves (307) and four base plates (305). There are four top rods (303), four second springs (304), and four pressure plates (302). The four cylinders (301) are evenly fixed to the inner wall of the buffer chamber (3). The four pressure plates (302) are slidably fitted to the inner walls of the four cylinders (301) respectively. The top of the pressure plate (302) is fixedly connected to the bottom of the top rod (303). The four top rods (303) are respectively embedded in the adsorption packing frame (306) near the four corners.

6. The purification equipment for wood dyeing wastewater according to claim 5, characterized in that: The four sleeves (307) are respectively threaded onto the outer surfaces of the four push rods (303), the four base plates (305) are respectively fixedly sleeved onto the outer surfaces of the four push rods (303), and the four second springs (304) are respectively movably sleeved onto the outer surfaces of the four push rods (303), and the two ends of the second springs (304) respectively abut against the bottom of the pressure plate (302) and the inner wall of the bottom of the sleeves (307).

7. The purification equipment for wood dyeing wastewater according to claim 1, characterized in that: The adsorption packing frame (306) is movably embedded in the inner wall of the buffer chamber (3). The adsorption chamber (308) adopts a layered filling structure, which is divided into a coarse filtration adsorption layer (3081), a deep adsorption layer (3082) and a fine filtration adsorption layer (3083) from top to bottom. The coarse filtration adsorption layer (3081), the deep adsorption layer (3082) and the fine filtration adsorption layer (3083) are filled independently, and adjacent layers are separated by a stainless steel filter screen. The stainless steel filter screen is fixed to the inner wall of the adsorption chamber (308).

8. The purification equipment for wood dyeing wastewater according to claim 7, characterized in that: The coarse filtration adsorption layer (3081) is filled with modified zeolite particles, the deep adsorption layer (3082) is filled with granular activated carbon, and the fine filtration adsorption layer (3083) is filled with activated carbon fiber.

9. A purification device for wood dyeing wastewater according to claim 1, characterized in that: The top of the water distribution chamber (1) is connected to an inlet pipe (108), and a pump (109) is installed at one end of the inlet pipe (108). The bottom of the buffer chamber (3) is connected to an outlet pipe (309). The water distribution chamber (1), the vortex guide chamber (2), and the buffer chamber (3) are fixedly connected by a flange-type connection structure to form a closed-loop pretreatment channel.

10. A method of using a purification device for wood dyeing wastewater, characterized in that: The purification equipment for wood dyeing wastewater as described in claims 1-9 includes the following steps: S1: Start the pump (109). The wood dyeing wastewater that has been pre-filtered is pressurized and sucked in by the pump (109) and transported to the inside of the water distribution chamber (1) through the inlet pipe (108) on one side of the water distribution chamber (1). S2: The high-speed water flow impacts the concave surface of the arc-shaped water distribution plate (102). The impact force of the water flow drives the crossbar (101) to rotate. The crossbar (101) drives the eccentric wheel (103) at the end to make a circular motion in sync. The circular motion is converted into the piston plate (106) moving in a straight line along the inner wall of the sealing cylinder (105) through the crank (104). S3: When the piston plate (106) moves downward, the gas inside the sealing cylinder (105) is compressed. The high-pressure gas is transported through the air guide pipe (107) to the cylinder (202) of the vortex guide chamber (2), pushing the circular plate (203) to move away from the air guide pipe (107) along the inner wall of the cylinder (202) and squeezing the first spring (205). The circular plate (203) drives the transmission plate (206) to move through the push rod (204), which in turn drives the blade shaft (207) to drive the arc blade (208) to swing to one side. When the piston plate (106) moves upward, a negative pressure is formed inside the sealing cylinder (105), and the gas pressure inside the cylinder (202) decreases. The first spring (205) elastically resets and pushes the circular plate (203) to move in the opposite direction, driving the arc blade (208) to swing to the other side. The arc blade (208) swings back and forth, driving the water flow to form a spiral flow state. Impurities are thrown towards the chamber wall by centrifugal force and slide down. S4: After solid-liquid pre-separation, the water flows smoothly into the buffer chamber (3) and along the inner wall of the buffer chamber (3) to the adsorption packing frame (306). When the water impacts the adsorption packing frame (306), it drives the pressure plate (302) to slide down along the inner wall of the cylinder (301). The pressure plate (302) squeezes the second spring (304) to cause it to undergo elastic deformation. The second spring (304) generates a reverse elastic force, which offsets most of the water impact force, so that the adsorption packing frame (306) only produces a small displacement. S5: Water flows through the adsorption chamber (308) inside the adsorption packing frame (306), and passes through the coarse filtration adsorption layer (3081), the deep adsorption layer (3082), and the fine filtration adsorption layer (3083) in sequence to achieve graded purification. The pretreated wastewater after purification is discharged through the outlet pipe (309) on one side of the buffer tank (3) and enters the subsequent deep treatment process.

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