A device for treating wastewater after wood processing

Abstract

This invention relates to the field of wood wastewater treatment technology and discloses a wastewater treatment device for wood processing, including a wastewater treatment tank. The bottom of the wastewater treatment tank has a drain outlet, and a collection tank is located on the side of the tank. A slag-removing conveyor belt can scoop up floating wood chips from the top. Simultaneously, an electric pusher drives a first pusher plate to move to the right, pushing large pieces of wood chips floating on the water surface and attached to the tank wall towards the slag-removing conveyor belt on the right. In conjunction with a first, second, and third connecting rod, a second pusher plate and an elastic pusher plate can move to the left, pushing the wood chips at the bottom of the slag-removing conveyor belt to the center, allowing them to re-enter the water circulation or be scooped up again. This reduces dead zones in the slag removal process, lowers the concentration of suspended solids in the wastewater at the source, effectively reduces the treatment pressure on subsequent flotation and biochemical processes, and ensures the long-term stable operation of the entire system.

Description

Technical Field

[0001] This invention relates to the field of wood wastewater treatment technology, specifically to a wastewater treatment device for wood processing. Background Technology

[0002] With the increasing demand for wood products, the wood processing industry is developing rapidly, and the resulting industrial wastewater has become a major source of pollution. This wastewater mainly originates from processes such as debarking of logs, wood steaming, veneer drying, and washing of glue preparation and application equipment. Among these, steaming wastewater is the primary source of wood processing wastewater. This wastewater is high-concentration organic wastewater, characterized by large volume, high color, high lignin content, and poor biodegradability. Some of this wastewater is at high temperatures and has strong polluting power; some contains harmful chemicals such as formaldehyde, and direct discharge into water bodies would cause serious pollution.

[0003] When treating wastewater from wood, a lot of floating wood residue is generated. This wood residue can affect the flow of pipes, which in turn affects the wastewater treatment effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wastewater treatment device after wood processing, which addresses the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a wastewater treatment device for wood processing, including a wastewater treatment tank, a drain outlet at the bottom of the wastewater treatment tank, a collection tank on the side of the wastewater treatment tank, and a slag discharge mechanism inside the wastewater treatment tank. The slag discharge mechanism includes a slag-collecting conveyor belt, a baffle fixedly connected to the bottom of the telescopic slag-collecting conveyor belt, a motor on the back of the slag-collecting conveyor belt, an electric push rod fixedly connected to the left side of the wastewater treatment tank, a first connecting plate at one end of the electric push rod, a first moving rod fixedly connected to the right side of the first connecting plate, the first moving rod movably penetrating the wastewater treatment tank and extending into it, and a first slag-pushing plate fixedly connected to the right side of the first moving rod. When the device is started, the slag-collecting conveyor belt continuously rotates under the drive of the motor at the back, initially collecting the lightweight wood chips floating on the top of the wastewater treatment tank and transporting the collected wood chips to the collection tank. The electric push rod extends and pushes the first moving rod to the right through the first connecting plate. The first moving rod drives the first slag-pushing plate to slide to the right inside the wastewater treatment tank. The first pusher plate pushes the large pieces of wood chips floating on the water surface and attached to the tank wall to the right to the slag removal conveyor belt, where they are scooped up by the conveyor belt.

[0006] Preferably, a fixing plate is fixedly connected to the inner wall of the wastewater treatment tank, a first connecting rod is rotatably connected to the top of the fixing plate, a second connecting rod is rotatably connected to the bottom of the first slag pusher plate, and the second connecting rod is rotatably connected to the top of the first connecting rod.

[0007] Preferably, a second connecting rod is rotatably connected to the top of the first connecting rod, a bottom plate is slidably connected to the inner wall of the wastewater treatment tank, a third connecting rod is rotatably connected to the bottom of the bottom plate, and the third connecting rod is rotatably connected to the top of the first connecting rod.

[0008] Preferably, a second slag-pushing plate is fixedly connected to the top of the base plate. An elastic slag-pushing plate is slidably connected inside the second slag-pushing plate via an elastic spring. The top of the elastic slag-pushing plate contacts the bottom of the baffle. As the first slag-pushing plate moves to the right, a second connecting rod rotatably connected to its bottom moves accordingly. The second connecting rod is rotatably connected to the first connecting rod, with its bottom rotatably connected to a fixed plate and its top rotatably connected to both the second and third connecting rods. Through this linkage mechanism, the third connecting rod pushes the base plate and the second slag-pushing plate fixed to it to the left. The second slag-pushing plate, along with the elastic slag-pushing plate connected to its top via an elastic spring, moves to the left, pushing the wood chips deposited at the bottom of the slag-collecting conveyor belt in the opposite direction to the middle area of ​​the wastewater treatment tank, causing them to resuspend or be retrieved by the conveyor belt again. Under the action of the elastic spring, the elastic slag-pushing plate maintains elastic contact with the bottom of the baffle, ensuring thorough slag scraping.

[0009] Preferably, the wastewater treatment tank is provided with an anti-sinking mechanism, which includes a vertical rod. The vertical rod is fixedly connected to the bottom of the first slag pusher plate. A connecting groove is provided inside the vertical rod. A movable rod is slidably connected inside the connecting groove. A pusher plate is fixedly connected to the bottom of the movable rod. The pusher plate is in contact with the bottom inner wall of the wastewater treatment tank.

[0010] Preferably, a horizontal plate is fixedly connected to the bottom of the wastewater treatment tank. The horizontal plate has a corrugated groove inside. A contact rod is fixedly connected to the front of the push plate, and the contact rod contacts the top of the horizontal plate. A first spring is fixedly connected between the connecting groove and the movable rod. During the reciprocating movement of the first push plate, the vertical rod fixedly connected to its bottom moves synchronously. A movable rod is slidably connected inside the vertical rod through the connecting groove. A push plate is fixedly connected to the bottom of the movable rod, and the push plate always contacts the bottom inner wall of the wastewater treatment tank. The reciprocating sliding of the push plate disturbs the fine wood chips that have settled to the bottom of the tank, causing them to resuspend in the water for subsequent discharge through the slag discharge mechanism or drain. The contact rod is fixedly connected to the front of the push plate, and a horizontal plate with a corrugated groove is fixedly connected to the bottom of the wastewater treatment tank. When the push plate moves, the contact rod slides along the corrugated groove at the top of the horizontal plate. When the abutment rod encounters a protrusion in the wave groove, it is lifted upwards, causing the push plate to compress the first spring in the connecting groove via the movable rod and rise upwards. After passing the protrusion, the first spring returns to its original position, pushing the push plate back to press firmly against the bottom of the tank. This wave-like undulating motion enhances the turbulence of the water flow at the bottom and bounces the wood chips up, further preventing the wood chips from settling and hardening at the bottom.

[0011] Preferably, the collection box is provided with a pressing mechanism inside. The pressing mechanism includes a second moving rod, which is fixedly connected to the right side of the second slag pushing plate. A second connecting plate is fixedly connected to the right side of the second moving rod, and a folding rod is fixedly connected to the right side of the second connecting plate. One end of the folding rod away from the second connecting plate moves through the collection box and extends into it. One end of the folding rod is fixedly connected to a combing plate.

[0012] Preferably, the inner wall of the collection box has a groove, and a slider is slidably connected inside the groove. A second spring is fixedly connected to the bottom of the collection box. A rectangular frame is fixedly connected to the front of the slider. Several pressure rods are fixedly connected to the inner wall of the rectangular frame. An abutment plate is fixedly connected to the top of the rectangular frame. An inclined plate is fixedly connected to the top of the folded rod. The inclined plate contacts the abutment plate. When the second slag pusher moves to the left to discharge slag from the bottom, the second moving rod fixedly connected to its right side moves to the left. The second moving rod drives the folded rod to move to the left through the second connecting plate. One end of the folded rod movably passes through the collection box and is fixedly connected to a combing plate. The combing plate moves to the left inside the collection box, initially pushing and combing the loose slag that just enters the collection box, making it evenly distributed. As the folded rod continues to move to the left, the inclined plate fixed at its top gradually contacts the abutment plate inside the collection box. Under the guidance of the inclined plate, the inclined plate pushes the abutment plate downward. The abutment plate drives the rectangular frame and the slider to overcome the resistance of the second spring and slide downward along the groove. Several pressure bars fixed to the inner wall of the rectangular frame move downwards to vertically compact the waste below. When the folded rod moves to the right and resets, the inclined plate disengages from the contact plate, the second spring resets, and pushes the rectangular frame and pressure bars upwards, awaiting the next pressing cycle.

[0013] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This wastewater treatment device for wood processing uses a conveyor belt to scoop up floating wood chips from the top. Simultaneously, an electric pusher drives a first pusher plate to move to the right, pushing large pieces of wood chips floating on the water surface and attached to the tank wall towards the conveyor belt. In conjunction with a first, second, and third connecting rod, a second pusher plate and a flexible pusher plate move to the left, pushing the wood chips at the bottom of the conveyor belt to the center, allowing them to re-enter the water circulation or be scooped up again. This reduces dead zones in the scooping process, lowers the concentration of suspended solids in the wastewater at the source, effectively reduces the treatment pressure on subsequent flotation and biochemical processes, and ensures the long-term stable operation of the entire system.

[0014] 2. This wastewater treatment device for wood processing utilizes the reciprocating motion of the first pusher plate during the slag discharge process to drive the vertical rod and pusher plate at its bottom to move synchronously. The pusher plate slides close to the bottom inner wall of the wastewater treatment tank, which can re-disturb the fine wood chips that have settled to the bottom, making them resuspended in the water for subsequent discharge through the slag discharge mechanism or drain outlet. During the movement of the pusher plate, the abutment rod on its front slides in the corrugated groove at the top of the horizontal plate. When it encounters a protrusion in the corrugated groove, the abutment rod is pushed up, causing the pusher plate to compress the first spring and lift upwards, thus bounced up the wood chips and reducing the amount of wood chips settling to the bottom.

[0015] 3. In this wastewater treatment device for wood processing, when the second slag-pushing plate moves upward to discharge slag, the second moving rod on its right side drives the combing plate to move into the collection box through the second connecting plate and the folding rod. This initially pushes and combs the loose waste slag that just enters the collection box, making it evenly distributed. As the folding rod continues to move to the right, its top inclined plate contacts the contact plate. Under the guidance of the inclined surface, the inclined plate pushes the contact plate and the entire rectangular frame downward against the resistance of the second spring. When the rectangular frame moves downward, several pressure rods on its inner wall will vertically press the waste slag below, greatly improving the space utilization rate of the collection box, reducing the frequency of manual cleaning, and lowering the cost of subsequent waste slag transfer and disposal. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of the present invention; Figure 2 This is a rear view of the structure of the present invention; Figure 3 This is a first partial view of the slag discharge mechanism of the present invention; Figure 4 This is a second partial view of the slag discharge mechanism of the present invention; Figure 5 This is a first partial view of the anti-sinking mechanism of the present invention; Figure 6 This is a second partial view of the anti-sinking mechanism of the present invention; Figure 7 This is a first partial view of the pressing mechanism of the present invention; Figure 8 This is a second partial view of the pressing mechanism of the present invention.

[0017] In the diagram: 1. Wastewater treatment tank; 2. Drain outlet; 3. Collection tank; 4. Slag discharge mechanism; 411. Slag removal conveyor belt; 412. Motor; 413. Electric push rod; 414. First connecting plate; 415. First moving rod; 416. First slag pushing plate; 417. Fixed plate; 418. First connecting rod; 419. Second connecting rod; 420. Bottom plate; 421. Third connecting rod; 422. Second slag pushing plate; 423. Elastic slag pushing plate; 5. Anti-settling device. Mechanism; 511, vertical rod; 512, movable rod; 513, push plate; 514, first spring; 515, horizontal plate; 516, wave groove; 517, abutting rod; 6, pressing mechanism; 611, second moving rod; 612, second connecting plate; 613, folded rod; 614, combing plate; 615, sliding groove; 616, slider; 617, rectangular frame; 618, second spring; 619, pressure rod; 620, abutting plate; 621, inclined plate. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-8One embodiment of the present invention is: a wastewater treatment device for wood processing, including a wastewater treatment tank 1, a drain outlet 2 at the bottom of the wastewater treatment tank 1, a collection box 3 on the side of the wastewater treatment tank 1, a slag discharge mechanism 4 inside the wastewater treatment tank 1, the slag discharge mechanism 4 including a slag removal conveyor belt 411, a baffle fixedly connected to the bottom of the telescopic slag removal conveyor belt 411, a motor 412 on the back of the slag removal conveyor belt 411, an electric push rod 413 fixedly connected to the left side of the wastewater treatment tank 1, a first connecting plate 414 at one end of the electric push rod 413, and a motor 412 fixedly connected to the right side of the first connecting plate 414. A first movable rod 415 is fixedly connected to the wastewater treatment tank 1 and extends into it. A first slag pusher plate 416 is fixedly connected to the right side of the first movable rod 415. When the device is started, the slag removal conveyor belt 411 runs continuously under the drive of the back motor 412 to initially remove the light wood chips floating on the top of the wastewater treatment tank 1 and transport the removed wood chips to the direction of the collection box 3. The electric push rod 413 extends out and pushes the first movable rod 415 to the right through the first connecting plate 414. The first movable rod 415 drives the first slag pusher plate 416 to slide to the right inside the wastewater treatment tank 1. The first pusher plate 416 pushes large pieces of wood chips floating on the water surface and attached to the tank wall to the right to the slag removal conveyor belt 411, where they are removed by the conveyor belt. A fixing plate 417 is fixedly connected to the inner wall of the wastewater treatment tank 1. A first connecting rod 418 is rotatably connected to the top of the fixing plate 417. A second connecting rod 419 is rotatably connected to the bottom of the first pusher plate 416. The second connecting rod 419 is rotatably connected to the top of the first connecting rod 418, and the top of the first connecting rod 418 is rotatably connected to the second connecting rod 419. The wastewater treatment tank 1... A base plate 420 is slidably connected to the inner wall of the baffle. A third link 421 is rotatably connected to the bottom of the base plate 420. The third link 421 is rotatably connected to the top of the first link 418. A second pusher plate 422 is fixedly connected to the top of the base plate 420. An elastic pusher plate 423 is slidably connected to the inside of the second pusher plate 422 via an elastic spring. The top of the elastic pusher plate 423 contacts the bottom of the baffle. As the first pusher plate 416 moves to the right, the second link 419, which is rotatably connected to its bottom, moves accordingly. The second link 419 is rotatably connected to the first link 418. The bottom of the first link 418 is rotatably connected to a fixed plate 417, and its top is rotatably connected to both the second link 419 and the third link 421. Through the transmission of this linkage mechanism, the third link 421 pushes the base plate 420 and the second pusher plate 422 fixed to the base plate to move to the left. The second pusher plate 422 moves the elastic pusher plate 423 connected to its top by an elastic spring to the left, pushing the wood chips deposited at the bottom of the slag removal conveyor belt 411 in the opposite direction to the middle area of ​​the wastewater treatment tank 1, so that they are resuspended or picked up by the conveyor belt again. Under the action of the elastic spring, the elastic pusher plate 423 always maintains elastic contact with the bottom of the baffle, ensuring thorough slag scraping.

[0020] Working principle: When the device starts, the slag removal conveyor belt 411 operates continuously under the drive of the back motor 412, initially removing the lightweight wood chips floating on the top of the wastewater treatment tank 1 and conveying the removed wood chips to the collection tank 3. The electric push rod 413 extends and pushes the first moving rod 415 to the right through the first connecting plate 414. The first moving rod 415 drives the first slag pushing plate 416 to slide to the right inside the wastewater treatment tank 1. The first slag pushing plate 416 pushes the large pieces of wood chips floating on the water surface and attached to the tank wall to the right to the slag removal conveyor belt 411, where they are removed by the conveyor belt. As the first slag pushing plate 416 moves to the right, the second connecting rod 419, which is rotatably connected to its bottom, moves accordingly. The second connecting rod 419 is rotatably connected to the first connecting rod 418. The bottom of the first connecting rod 418 is rotatably connected to the fixed plate 417, and the top is rotatably connected to both the second connecting rod 419 and the third connecting rod 421. Through the transmission of this linkage mechanism, the third link 421 pushes the bottom plate 420 and the second slag-pushing plate 422 fixed on the bottom plate to move to the left. The second slag-pushing plate 422 drives the elastic slag-pushing plate 423 connected to its top by an elastic spring to move to the left together, pushing the wood chips deposited at the bottom of the slag-removing conveyor belt 411 in the opposite direction to the middle area of ​​the wastewater treatment tank 1, so that they are resuspended or picked up by the conveyor belt again. Under the action of the elastic spring, the elastic slag-pushing plate 423 always maintains elastic contact with the bottom of the baffle to ensure thorough slag scraping.

[0021] Please see Figure 1-8Based on the above embodiments, in another embodiment of the present invention, the wastewater treatment tank 1 is provided with an anti-sinking mechanism 5. The anti-sinking mechanism 5 includes a vertical rod 511, which is fixedly connected to the bottom of the first slag pusher plate 416. A connecting groove is provided inside the vertical rod 511, and a movable rod 512 is slidably connected inside the connecting groove. A pusher plate 513 is fixedly connected to the bottom of the movable rod 512, and the pusher plate 513 contacts the bottom inner wall of the wastewater treatment tank 1. A horizontal plate 515 is fixedly connected to the bottom side of the wastewater treatment tank 1, and a wave groove 516 is provided inside the horizontal plate 515. An abutment rod 517 is fixedly connected to the front of the pusher plate 513, and the abutment rod 517 contacts the top of the horizontal plate 515. A first spring 514 is fixedly connected between the connecting groove and the movable rod 512. During the reciprocating movement of the first slag pusher plate 416, the vertical rod 511 fixedly connected to its bottom moves synchronously. A movable rod 512 is slidably connected to the inside of the vertical rod 511 via a connecting groove. A push plate 513 is fixedly connected to the bottom of the movable rod 512, and the push plate 513 is always in contact with the bottom inner wall of the wastewater treatment tank 1. The reciprocating sliding of the push plate 513 disturbs the fine wood chips that have settled to the bottom of the tank, causing them to resuspend in the water, making it easier to discharge them later through the slag discharge mechanism 4 or the drain outlet 2. An abutment rod 517 is fixedly connected to the front of the push plate 513, and a horizontal plate 515 with a wave groove 516 is fixedly fixed to the bottom inside the wastewater treatment tank 1. When the push plate 513 moves, the abutment rod 517 slides along the wave groove 516 at the top of the horizontal plate 515. When the abutment rod 517 encounters the protrusion of the wave groove 516, it is pushed upward, causing the push plate 513 to compress the first spring 514 in the connecting groove via the movable rod 512 and lift upward; after passing the protrusion, the first spring 514 returns to its original position, pushing the push plate 513 back to the bottom of the tank. This wave-like undulating motion enhances the turbulence of the bottom water flow and bounces the wood chips up, further preventing them from settling and hardening at the bottom.

[0022] Working principle: During the reciprocating movement of the first slag pusher plate 416, the vertical rod 511 fixedly connected to its bottom moves synchronously. A movable rod 512 is slidably connected inside the vertical rod 511 via a connecting groove. A pusher plate 513 is fixedly connected to the bottom of the movable rod 512, and the pusher plate 513 is always in contact with the bottom inner wall of the wastewater treatment tank 1. The reciprocating sliding of the pusher plate 513 disturbs the fine wood chips that have settled to the bottom of the tank, causing them to resuspend in the water, facilitating subsequent discharge through the slag discharge mechanism 4 or the drain outlet 2. An abutment rod 517 is fixedly connected to the front of the pusher plate 513, and a horizontal plate 515 with a wave groove 516 is fixedly fixed to the bottom inside the wastewater treatment tank 1. When the pusher plate 513 moves, the abutment rod 517 slides along the wave groove 516 at the top of the horizontal plate 515. When the contact rod 517 encounters the protrusion of the wave groove 516, it is lifted upwards, causing the push plate 513 to compress the first spring 514 in the connecting groove via the movable rod 512 and lift upwards; after passing the protrusion, the first spring 514 returns to its original position, pushing the push plate 513 to re-adhere to the bottom of the tank. This wave-like undulating motion enhances the turbulence of the bottom water flow and bounces up the wood chips, further preventing the wood chips from settling and hardening at the bottom.

[0023] Please see Figure 1-8Based on the above embodiments, in another embodiment of the present invention, a pressing mechanism 6 is provided inside the collection box 3. The pressing mechanism 6 includes a second moving rod 611, which is fixedly connected to the right side of the second slag pushing plate 422. A second connecting plate 612 is fixedly connected to the right side of the second moving rod 611, and a folded rod 613 is fixedly connected to the right side of the second connecting plate 612. One end of the folded rod 613 away from the second connecting plate 612 movably passes through the collection box 3 and extends into it. A combing plate 614 is fixedly connected to one end of the folded rod 613. The inner wall of the collection box 3 is opened... The system includes a chute 615, with a slider 616 slidably connected inside. A second spring 618 is fixedly connected to the bottom of the collection box 3. A rectangular frame 617 is fixedly connected to the front of the slider 616. Several pressure rods 619 are fixedly connected to the inner wall of the rectangular frame 617. A contact plate 620 is fixedly connected to the top of the rectangular frame 617. An inclined plate 621 is fixedly connected to the top of the folded rod 613, and the inclined plate 621 contacts the contact plate 620. When the second slag pusher plate 422 moves to the left to discharge slag from the bottom, the second moving rod 611 fixedly connected to its right side moves to the left accordingly. The second moving rod 611 drives the folded rod 613 to move to the left via the second connecting plate 612. One end of the folded rod 613 movably passes through the collection box 3 and is fixedly connected to a combing plate 614. The combing plate 614 moves to the left within the collection box 3, initially pushing and combing the loose waste residue that has just entered the collection box 3, making it evenly distributed. The folded rod 613 continues to move to the left, and the inclined plate 621 fixed at its top gradually contacts the contact plate 620 inside the collection box 3. Under the guidance of the inclined plate, the inclined plate 621 pushes the contact plate 620 downward, and the contact plate 620 drives the rectangular frame 617 and the slider 616 to overcome the resistance of the second spring 618 and slide downward along the slide groove 615. Several pressure rods 619 fixed on the inner wall of the rectangular frame 617 move downward accordingly, vertically compacting the waste residue below. When the folded rod 613 moves to the right and resets, the inclined plate 621 disengages from the contact plate 620, the second spring 618 resets, and pushes the rectangular frame 617 and the pressure rods 619 upward, waiting for the next pressing cycle.

[0024] Working principle: When the second slag pusher plate 422 moves to the left to discharge slag from the bottom, the second moving rod 611 fixedly connected to its right side also moves to the left. The second moving rod 611 drives the folded rod 613 to move to the left through the second connecting plate 612. One end of the folded rod 613 movably passes through the collection box 3 and is fixedly connected to the combing plate 614. The combing plate 614 moves to the left inside the collection box 3, initially pushing and combing the loose waste slag that has just entered the collection box 3, making it evenly distributed. The folded rod 613 continues to move to the left, and the inclined plate 621 fixed at its top gradually contacts the contact plate 620 inside the collection box 3. Under the guidance of the inclined plate, the inclined plate 621 pushes the contact plate 620 downward, and the contact plate 620 drives the rectangular frame 617 and the slider 616 to overcome the resistance of the second spring 618 and slide downward along the chute 615. Several pressure rods 619 fixed on the inner wall of the rectangular frame 617 move downward accordingly, compacting the waste slag below vertically. When the folding rod 613 moves to the right and resets, the inclined plate 621 disengages from the contact plate 620, the second spring 618 resets, and pushes the rectangular frame 617 and the pressure rod 619 upward, waiting for the next pressing cycle.

[0025] This invention provides a wastewater treatment device for wood processing. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A wastewater treatment device for wood processing, comprising a wastewater treatment tank (1), characterized in that: The bottom of the wastewater treatment tank (1) is provided with a drain outlet (2), and the side of the wastewater treatment tank (1) is provided with a collection box (3). The wastewater treatment tank (1) is equipped with a slag discharge mechanism (4). The slag discharge mechanism (4) includes a slag removal conveyor belt (411). A baffle is fixedly connected to the bottom of the telescopic slag removal conveyor belt (411). A motor (412) is provided on the back of the slag removal conveyor belt (411). An electric push rod (413) is fixedly connected to the left side of the wastewater treatment tank (1). A first connecting plate (414) is provided at one end of the electric push rod (413). A first moving rod (415) is fixedly connected to the right side of the first connecting plate (414). The first moving rod (415) moves through the wastewater treatment tank (1) and extends into it. A first slag pusher plate (416) is fixedly connected to the right side of the first moving rod (415).

2. The wastewater treatment device for wood processing according to claim 1, characterized in that: The wastewater treatment tank (1) is fixedly connected to a fixing plate (417) on its inner wall. The top of the fixing plate (417) is rotatably connected to a first connecting rod (418). The bottom of the first slag pusher plate (416) is rotatably connected to a second connecting rod (419). The second connecting rod (419) is rotatably connected to the top of the first connecting rod (418).

3. The wastewater treatment device for wood processing according to claim 2, characterized in that: The top of the first link (418) is rotatably connected to the second link (419), the inner wall of the wastewater treatment tank (1) is slidably connected to the bottom plate (420), the bottom of the bottom plate (420) is rotatably connected to the third link (421), and the third link (421) is rotatably connected to the top of the first link (418).

4. The wastewater treatment device for wood processing according to claim 3, characterized in that: The top of the base plate (420) is fixedly connected to a second slag pusher plate (422), and the interior of the second slag pusher plate (422) is slidably connected to an elastic slag pusher plate (423) by an elastic spring. The top of the elastic slag pusher plate (423) is in contact with the bottom of the baffle.

5. The wastewater treatment device for wood processing according to claim 4, characterized in that: The wastewater treatment tank (1) is equipped with an anti-sinking mechanism (5). The anti-sinking mechanism (5) includes a vertical rod (511). The vertical rod (511) is fixedly connected to the bottom of the first slag pusher plate (416). A connecting groove is provided inside the vertical rod (511). A movable rod (512) is slidably connected inside the connecting groove. A pusher plate (513) is fixedly connected to the bottom of the movable rod (512). The pusher plate (513) is in contact with the bottom inner wall of the wastewater treatment tank (1).

6. The wastewater treatment device for wood processing according to claim 5, characterized in that: A horizontal plate (515) is fixedly connected to the bottom inside the wastewater treatment tank (1). A wave groove (516) is opened inside the horizontal plate (515). An abutment rod (517) is fixedly connected to the front of the push plate (513). The abutment rod (517) contacts the top of the horizontal plate (515). A first spring (514) is fixedly connected between the connecting groove and the movable rod (512).

7. The wastewater treatment device for wood processing according to claim 6, characterized in that: The collection box (3) is provided with a pressing mechanism (6) inside. The pressing mechanism (6) includes a second moving rod (611). The second moving rod (611) is fixedly connected to the right side of the second slag pusher plate (422). A second connecting plate (612) is fixedly connected to the right side of the second moving rod (611). A folded rod (613) is fixedly connected to the right side of the second connecting plate (612). One end of the folded rod (613) away from the second connecting plate (612) moves through the collection box (3) and extends into it. One end of the folded rod (613) is fixedly connected to a combing plate (614).

8. The wastewater treatment device for wood processing according to claim 7, characterized in that: The inner wall of the collection box (3) is provided with a sliding groove (615), and a slider (616) is slidably connected inside the sliding groove (615). A second spring (618) is fixedly connected to the bottom inside the collection box (3). A rectangular frame (617) is fixedly connected to the front of the slider (616). Several pressure rods (619) are fixedly connected to the inner wall of the rectangular frame (617). A contact plate (620) is fixedly connected to the top of the rectangular frame (617). An inclined plate (621) is fixedly connected to the top of the folded rod (613). The inclined plate (621) contacts the contact plate (620).

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