Sedimentation tank for feed additive production wastewater treatment

Abstract

The invention provides a sedimentation tank for feed additive production wastewater treatment, which comprises a tank body, a main shaft is rotatably mounted in the middle of the tank body, and a slag scraping structure is mounted on the side wall of the top of the main shaft; a slag stopping assembly is erected on the top of the tank body, a slag discharging structure is arranged on the side, close to the rotating and swinging coming direction of the slag scraping structure, of the slag stopping assembly and comprises a slag discharging pipe and a drainage piece, and one end of the slag discharging pipe extends to a slag collecting groove formed in the outer wall of the tank body; the other end of the deslagging pipe is movably connected with the drainage piece, and the unblocking matching state of the drainage piece and the deslagging pipe is changed along with the movement of the drainage piece; the scum scraping structure rotates along with the main shaft and pushes scum to the position of the scum stopping assembly; when the slag scraping structure moves to the slag discharging structure, the drainage piece is driven to move to the position communicated with the slag discharging pipe; after the slag scraping structure is separated from the slag discharging structure, the drainage piece restores to the position where the slag discharging pipe is plugged; the scum collecting device can collect scum in a unified area, the scum is collected to a collecting part in a drainage mode, and the rapid and effective cleaning effect is achieved.

Description

Technical Field

[0001] The invention relates to the field of sedimentation tanks, and more specifically to a sedimentation tank for treating wastewater from feed additive production. Background Art

[0002] In the production process of feed additives, a large amount of waste liquids such as fermentation process wastewater and cleaning wastewater are generated, which need to be treated before they can be discharged. Among them, sedimentation tanks are used in primary sedimentation, secondary sedimentation, and tertiary sedimentation, and sedimentation tanks are the most commonly used structural equipment;

[0003] At present, the cleaning method of the sedimentation tank for scum is mostly to set a scum collecting area at the edge of the tank body, push the scum to the scum collecting area by a scraper, and use the inclined guide surface of the scum collecting area to push the scum to the inside and realize external discharge;

[0004] However, there is also an obvious problem. Although the scraper covers the radius of the pool body, the scum will not be close to the edge under the scraping, and it is difficult to effectively push and gather the scum in the center, affecting the overall cleaning efficiency and quality, which needs to be improved. Summary of the invention

[0005] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a sedimentation tank for treating feed additive production wastewater, which can collect scum in a unified area and drain the scum to a collection site to achieve a fast and effective cleaning effect.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The invention provides a sedimentation tank for treating wastewater produced by feed additives, comprising a tank body, a main shaft and a motor; the main shaft is rotatably installed in the middle of the tank body, the motor is used to drive the main shaft to rotate, a mud scraping structure is installed on the bottom side wall of the main shaft, and a slag scraping structure is installed on the top side wall; a slag blocking assembly is arranged on the top of the tank body, a slag discharge structure is arranged on the side of the slag blocking assembly close to the rotation and swinging direction of the slag scraping structure, the slag discharge structure comprises a slag discharge pipe and a drainage piece, one end of the slag discharge pipe extends to a slag collecting trough arranged on the outer wall of the tank body; the other end of the slag discharge pipe is movably connected with the drainage piece, and the unblocking matching state of the drainage piece and the slag discharge pipe changes with the movement of the drainage piece; the slag scraping structure rotates with the main shaft to push the floating slag to the position of the slag blocking assembly; when the slag scraping structure moves to the slag discharge structure, it drives the drainage piece to move to a position connected with the slag discharge pipe, and the floating slag and liquid on the surface are discharged to the slag collecting trough through the slag discharge structure; after the slag scraping structure is separated from the slag discharge structure, the drainage piece returns to the blocking position of the slag discharge pipe.

[0008] Furthermore, the top of the slag discharge pipe is inclined upward toward one side of the slag blocking assembly, and a chuck is fixedly provided on the outer side of the higher inclined end; one end of the guide piece is rotatably installed on the chuck, and the end shape of the guide piece is adapted to the shape of the clamping groove of the chuck; a water inlet is provided on the guide piece, and one end of the water inlet extends to an end of the guide piece close to the chuck; the guide piece rotates and swings around the center of the chuck, and when it rotates until the water inlet is aligned with the port of the slag discharge pipe, the guide piece is connected to the inside of the slag discharge pipe; when it rotates until the water inlet is completely separated from the port of the slag discharge pipe, the guide piece blocks the port of the slag discharge pipe.

[0009] Furthermore, the drainage member includes a support bar, one end of which is fixedly provided with a clamping head, and the clamping head is a columnar block structure; threaded holes are provided at the centers of the two side walls of the clamping head, and circular holes are provided on both sides of the clamping groove; the shape of the clamping groove is adapted to the shape of the clamping head, and the maximum spacing of the notches of the clamping groove is larger than the diameter of the clamping head, and the clamping head is rotatably installed at the clamping groove by means of support bolts, and the outer wall of the clamping head slides closely against the inner wall of the clamping groove; the water inlet is provided on the top surface of the support bar, and the end of the water inlet extending into the clamping head is tilted downward and passes through the outer wall of the clamping head; when the support bar is in a flat state, the top surface of the support bar is lower than the water surface, and the water inlet is connected to the slag discharge pipe; when the support bar is tilted downward and cannot be moved, the clamping head blocks the port of the slag discharge pipe.

[0010] Furthermore, a support frame is fixedly provided on the bottom surface of the support bar; a bracket is correspondingly fixedly provided on the scraping structure; when the bracket rotates with the main shaft to the slag discharge structure, the support frame is pushed and the support bar is maintained in a flat state.

[0011] Furthermore, the scraping structure includes a bracket and a scraping plate; one end of the scraping plate is fixedly connected to the main shaft, the bracket is located below the end of the scraping plate away from the main shaft, the bracket and the scraping plate are connected by a first support rod, and the bracket is located below the slag discharge pipe; one side of the bracket corresponds to one side of the scraping plate, and the other side extends and widens toward the direction of rotation of the scraping plate; when the scraping plate rotates and swings to the slag blocking assembly, the bracket maintains support for the support frame.

[0012] Furthermore, an inclined guide surface is provided on the side of the support frame close to the clamping head, and the guide surface is inclined downward toward the side close to the slag blocking assembly; a rounded corner is provided on the top edge of the side of the bracket away from the scraper plate; the slag discharge pipe is located at the rotating swinging trajectory of the support frame, and when the guide surface is against the slag discharge pipe, the clamping head is in a position to seal the port of the slag discharge pipe.

[0013] Furthermore, the outer wall of the clamp is provided with a plurality of sealing strips extending along the axial direction.

[0014] Furthermore, the slag blocking assembly includes a bracket and a baffle; the bracket is installed on the top of the pool body, and the baffle is installed on the bottom surface of the bracket by rotating through a rotating shaft, and the bottom surface of the baffle is not higher than the bottom surface of the scraper plate; the top surface of the scraper plate is lower than the bottom of the rotating shaft, and the distance between the top surface of the scraper plate and the bottom surface of the bracket is less than the thickness of the baffle.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a sedimentation tank for treating wastewater from the production of feed additives, wherein a main shaft is rotatably installed in the middle of the tank body, a motor is used to drive the main shaft to rotate, and a scraper structure is installed on the top side wall; a scraper assembly is arranged on the top of the tank body, and a scraper structure is arranged on the side of the scraper assembly close to the direction of rotation and swing of the scraper structure, and the scraper structure comprises a scraper pipe and a drainage piece, one end of the scraper pipe extends to a scraper collecting trough arranged on the outer wall of the tank body; the other end of the scraper pipe is movably connected to the drainage piece, and the unblocking matching state of the drainage piece and the scraper pipe changes with the movement of the drainage piece; the scraper structure rotates with the main shaft to push the floating slag to the position of the scraper assembly, so that the scraper structure and the scraper assembly form a gradually narrowing area, so that The slag is gathered in this area; in this process, when the scraping structure moves to the slag discharge structure, it drives the drainage piece to move to the position connected with the slag discharge pipe, and the surface liquid flows to the drainage piece, while the slag is discharged to the slag collecting tank through the slag discharge structure, so that the slag is quickly and effectively cleaned; and, after the scraping structure is separated from the slag discharge structure, the drainage piece returns to the blocking position of the slag discharge pipe, and will not continue to discharge waste liquid, and will not affect the normal sedimentation work; the above-mentioned whole action is based on the rotation and swing of the scraping structure, and the rotation thrust of the scraping structure is utilized, without the need for an additional electric drive structure, thereby reducing power consumption, and can also conform to conventional scraping actions, which is in line with practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a sedimentation tank for treating feed additive production wastewater disclosed in a specific embodiment of the present invention;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of a sedimentation tank for treating wastewater from feed additive production disclosed in a specific embodiment of the present invention when discharging scum;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the cell body disclosed in a specific embodiment of the present invention;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the main shaft, the mud scraping structure, and the slag scraping structure disclosed in a specific embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of the three-dimensional structure of the drainage member disclosed in a specific embodiment of the present invention;

[0022] Figure 6 is a cross-sectional view of a flow guide member disclosed in a specific embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the three-dimensional unfolded structure of the slag blocking assembly disclosed in a specific embodiment of the present invention.

[0024] In the figure:

[0025] 100, tank body; 110, slag collecting trough; 200, main shaft; 300, motor; 400, mud scraping structure; 500, slag scraping structure; 510, bracket; 520, slag scraping plate; 530, first support rod; 600, slag blocking assembly; 610, hanger; 620, baffle; 630, rotating shaft; 700, slag discharge structure; 710, slag discharge pipe; 711, chuck; 712, clamping groove; 720, drainage piece; 721, water inlet; 722, support bar; 723, clamp; 724, support frame; 725, guide surface; 726, sealing strip. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0027] like Figure 1 , Figure 2 As shown, a specific embodiment of the present invention discloses a sedimentation tank for treating wastewater from feed additive production, comprising a tank body 100, a main shaft 200, and a motor 300; a water inlet trough and an overflow trough are sequentially arranged at the inner edge of the top of the tank body from the outside to the inside, and a plurality of first perforations are arranged at the bottom of the water inlet trough in an array around the central circumference of the tank body, which are used to evenly distribute the wastewater flowing into the tank body; the inner ring top surface of the overflow trough is lower than the outer ring top surface, and the outer ring side wall of the overflow trough is connected to a first outer discharge pipe; the bottom of the tank body is connected to a mud discharge pipe; a corridor for pedestrians is arranged above the tank body, and an arch frame is arranged at the bottom center of the tank body, the main shaft is rotatably installed between the arch frame and the corridor, the motor is installed on the corridor and is connected to the main shaft, the motor 300 is used to drive the main shaft 200 to rotate, the bottom side wall of the main shaft 200 is installed with a mud scraping structure 400, and the top side wall is installed with a slag scraping structure 500;

[0028] A slag blocking assembly 600 is mounted on the top of the pool body 100. A slag discharge structure 700 is provided on the side of the slag blocking assembly 600 close to the direction of rotation and swing of the scraping structure. The slag discharge structure 700 includes a slag discharge pipe 710 and a drainage member 720. One end of the slag discharge pipe 710 extends to a slag collecting trough 110 provided on the outer wall of the pool body. The other end of the slag discharge pipe 710 is movably connected to the drainage member 720. The unblocking and matching state of the drainage member 720 and the slag discharge pipe 710 changes with the movement of the drainage member 720. The scraping structure rotates with the main shaft to move the floating slag to the slag blocking assembly. When the scraping structure moves to the slag discharge structure, it drives the drainage piece to move to the position connected with the slag discharge pipe, and the floating slag and the liquid on the surface are discharged to the slag collecting tank through the slag discharge structure; after the scraping structure is separated from the slag discharge structure, the drainage piece returns to the blocking position of the slag discharge pipe; wherein, the bottom of the slag collecting tank is connected with a second external discharge pipe for connecting with external equipment to realize the transfer of the collected material; the inner wall of the slag collecting tank is installed with a water level gauge for warning the collection capacity, facilitating timely processing, and preventing overflow or affecting the discharge action of the slag discharge structure;

[0029] In the above-mentioned sedimentation tank for treating wastewater from the production of feed additives, the scraping structure rotates with the main shaft, pushing the scum to the position of the scum blocking assembly, so that the scraping structure and the scum blocking assembly form a gradually narrowing area, causing the scum to gather in this area; in this process, when the scraping structure moves to the slag discharge structure, it drives the drainage piece to move to a position that is connected to the slag discharge pipe, and the surface liquid flows to the drainage piece, while the scum is discharged to the slag collecting trough through the slag discharge structure, thereby realizing rapid and effective cleaning of the scum; and, after the scraping structure is separated from the slag discharge structure, the drainage piece returns to the blocking position of the slag discharge pipe, and will not continue to discharge waste liquid, which will not affect the normal sedimentation work; the above-mentioned entire action is based on the rotational swing of the scraping structure, and utilizes the rotational thrust of the scraping structure, without the need for an additional electric drive structure, thereby reducing power consumption, and can also conform to conventional scraping actions, which is in line with actual applications.

[0030] Furthermore, if Figure 3 As shown, the top of the slag discharge pipe 710 is tilted upward toward one side of the slag blocking assembly 600 to facilitate the inflow of liquid, and a clamp 711 is fixedly provided on the outer side of the higher tilted end; one end of the guide member 720 is rotatably mounted on the clamp 711, and the shape of the end of the guide member 720 is adapted to the shape of the clamping groove 712 of the clamp 711; Figure 6 As shown, a water inlet 721 is provided on the guide member 720, and one end of the water inlet extends to the end of the guide member close to the chuck; the guide member rotates and swings around the center of the chuck, and when it rotates until the water inlet is aligned with the port of the slag discharge pipe, the guide member is connected to the inside of the slag discharge pipe; when it rotates until the water inlet is completely separated from the port of the slag discharge pipe, the guide member blocks the port of the slag discharge pipe; the change of the unblocking state is achieved by rotating and swinging, the principle is simple, and it is convenient for the design and coordination of the structure, and convenient for the processing, production and assembly of various structural components.

[0031] Furthermore, if Figure 5 , Figure 6 As shown, the drainage member 720 includes a support bar 722, one end of which is fixedly provided with a clamping head 723, and the clamping head is in a columnar block structure; threaded holes are provided at the center of the two side walls of the clamping head, and circular holes are provided on both sides of the clamping groove; the shape of the clamping groove 712 is adapted to the shape of the clamping head 723, and the maximum spacing of the notches of the clamping groove is greater than the diameter of the clamping head, and the clamping head 723 is rotatably installed at the clamping groove 712 by means of a support bolt, and the outer wall of the clamping head 723 slides closely against the inner wall of the clamping groove 712; the water inlet 721 is provided on the top surface of the support bar 722, and the end of the water inlet 721 extending into the clamping head is inclined downward and passes through the clamping head 7 23; when the support bar is in a horizontal state, the top surface of the support bar is lower than the water surface, and the water inlet is connected to the slag discharge pipe; when the support bar is tilted downward and cannot be moved, the clamp head blocks the port of the slag discharge pipe; the strip-shaped water inlet can effectively expand the range of water diversion and water absorption, so that waste water and slag can quickly flow into the slag discharge pipe; the clamp head and the clamp groove are both cylindrical structures, which can not only meet the rotation matching effect, but also can be used as the basis for blocking the port of the slag discharge pipe through the position of the circumferential outer wall, and reduce the problem of water leakage and water seepage through the larger contact area between the inner wall of the clamp groove and the side wall of the clamp head, so as to achieve effective blocking.

[0032] Furthermore, a support frame 724 is fixedly provided on the bottom surface of the support bar 722; Figure 4 , Figure 2 As shown, a bracket 510 is fixedly provided on the scraping structure 500; when the bracket rotates with the main shaft to the slag discharge structure, the support frame is pushed and the support bar is maintained in a flat state; by setting the support frame, the pushing range of the drainage member is expanded and extended downward, so that the scraping structure can cooperate with the corresponding bracket, which is convenient for the overall structural layout and design.

[0033] Furthermore, if Figure 4 As shown, the scraping structure 500 includes a bracket 510 and a scraping plate 520; one end of the scraping plate 520 is fixedly connected to the main shaft 200, and the bracket 510 is located below the end of the scraping plate 520 away from the main shaft 200. The bracket 510 and the scraping plate 520 are connected through a first support rod 530, and the bracket 510 is located below the slag discharge pipe 710; the scraping plate extending in the radial direction is designed to expand the contact area with the water surface, and the overall coverage is achieved through rotation, so that the floating scum is effectively scraped and pushed, so that the floating scum is smoothly pushed to the slag blocking component, so that the floating scum is gathered;

[0034] One side of the bracket 510 corresponds to one side of the scraper plate, and the other side extends and widens toward the direction of rotation of the scraper plate 520. This design allows the bracket to contact the support frame in advance. When there is still a certain distance between the scraper plate and the slag blocking assembly, the drainage piece can be pushed and lifted to the required position, and the slag collected in this area can be drained and discharged through the drainage piece; and the range of maintaining support can be expanded. When the scraper plate rotates and swings to the slag blocking assembly, the bracket maintains support for the support frame. Even if the collection range continues to shrink, the required drainage and slag discharge action is still maintained to ensure effective cleaning; and when the scraper plate passes through and detaches from the slag blocking assembly, the bracket will release its support for the support frame, and the drainage piece will fall and swing downward under the action of its own gravity, so that the clamp rotates to the position of sealing the end of the slag discharge pipe, and returns to the sealed state to prevent wastewater from being discharged.

[0035] Furthermore, an inclined guide surface 725 is provided on the side of the support frame 724 close to the clamping head 723, and the guide surface is inclined downward toward the side close to the slag blocking assembly; a rounded corner is provided on the top edge of the side of the bracket away from the scraper plate; on the one hand, it can reduce its occupation of the lower space and facilitate the design and layout of the overall structure; on the other hand, it can facilitate the contact and cooperation between the bracket and the support frame, and facilitate the pushing and lifting of the drainage piece to the required position; the slag discharge pipe 710 is located at the rotation and swinging trajectory of the support frame 724. When the guide surface 725 is against the slag discharge pipe 710, the clamping head 723 is in a position to block the port of the slag discharge pipe 710, limiting the extreme position of the lower swing of the support frame, which can meet the required blocking action, and can also make it accurately stay in the position ready to cooperate with the bracket for pushing, so as to facilitate subsequent pushing and lifting.

[0036] Furthermore, the outer wall of the clamping head 723 is provided with a plurality of sealing strips 726 extending along the axial direction; a multi-level seal is formed by the plurality of sealing strips, which effectively prevents waste water from seeping into the slag discharge pipe from the matching gap, thereby preventing unnecessary discharge; wherein, the outer wall of the clamping head is provided with a plurality of card grooves extending along the axial direction, the card grooves are T-slots or dovetail groove structures, and a card strip is fixedly provided on the bottom surface of the sealing strip, which is engaged with the card strip and the card slot; the outer wall of the sealing strip is an arc-shaped structure, and both sides of the sealing strip are adapted and extended with the arc surface of the outer wall of the clamping head, and the contact surface is reinforced by bonding with glue to prevent the sealing strip from warping or detaching during the rotation of the clamping head, thereby avoiding affecting the rotation and swing of the clamping head.

[0037] Furthermore, if Figure 7As shown, the slag blocking assembly 600 includes a bracket 610 and a baffle 620; the bracket is installed on the top of the pool body, and the baffle 620 is rotatably installed on the bottom surface of the bracket 610 through the rotating shaft 630, and the bottom surface of the baffle 620 is not higher than the bottom surface of the scraper plate 520; the top surface of the scraper plate 520 is lower than the bottom of the rotating shaft 630, and the distance between the top surface of the scraper plate 520 and the bottom surface of the bracket 610 is less than the thickness of the baffle 620; the baffle has a certain weight and is maintained in an upright position as much as possible to block the slag that is swung and pushed to this position; when the scraper plate moves toward the baffle, the slag is concentrated in the formed enclosure area so that it can be discharged from the slag discharge structure later; because the baffle is rotatable, when the scraper plate moves to the baffle position, the baffle can be pushed and flipped, and the baffle does not affect the rotation of the scraper structure;

[0038] Furthermore, the scraper structure includes a cantilever extending toward the inner wall of the tank body, and a plurality of scraper plates are fixedly provided on the bottom surface of the cantilever; the top surface of the cantilever and the bottom surface of the bracket are connected by a plurality of second support rods, so as to further strengthen the support for the scraper structure and enhance the overall structural strength; it should be noted that the sedimentation tank is a relatively mature wastewater treatment equipment, and the specific water inlet, mud discharge, drainage, main shaft connection transmission, etc. are relatively mature and well known, and the specific structure will not be elaborated.

[0039] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A sedimentation tank for treating wastewater from feed additive production, comprising a tank body, a main shaft, and a motor; the main shaft is rotatably mounted in the middle of the tank body, the motor is used to drive the main shaft to rotate, a mud scraping structure is mounted on the bottom side wall of the main shaft, and a slag scraping structure is mounted on the top side wall; the characteristics are: A slag blocking assembly is arranged on the top of the pool body. A slag discharge structure is arranged on the side of the slag blocking assembly close to the direction of rotation and swing of the scraping structure. The slag discharge structure includes a slag discharge pipe and a drainage piece. One end of the slag discharge pipe extends to a slag collecting trough arranged on the outer wall of the pool body. The other end of the slag discharge pipe is movably connected to the drainage piece. The unblocking and blocking coordination state of the drainage piece and the slag discharge pipe changes with the movement of the drainage piece. The scraping structure rotates with the main shaft and pushes the floating slag to the slag blocking component position; when the scraping structure moves to the slag discharge structure, it drives the drainage piece to move to the position connected with the slag discharge pipe, and the floating slag and the liquid on the surface are discharged to the slag collecting tank through the slag discharge structure; after the scraping structure is separated from the slag discharge structure, the drainage piece returns to the blocking position of the slag discharge pipe.

2. A sedimentation tank for treating wastewater from feed additive production according to claim 1, characterized in that: The top of the slag discharge pipe is tilted upward toward one side of the slag blocking assembly, and a clamp is fixedly provided on the outer side of the higher tilted end; One end of the guide piece is rotatably mounted on the chuck, and the shape of the end of the guide piece is adapted to the shape of the clamping groove of the chuck; The drainage piece is provided with a water inlet, one end of which extends to an end of the drainage piece close to the clamp; The flow guide piece rotates and swings around the center of the chuck, and when it rotates until the water inlet is aligned with the end of the slag discharge pipe, the flow guide piece is connected to the inside of the slag discharge pipe; When the water inlet is rotated to be completely separated from the port of the slag discharge pipe, the drainage member blocks the port of the slag discharge pipe.

3. A sedimentation tank for treating wastewater from feed additive production according to claim 2, characterized in that: The drainage piece includes a support bar, one end of which is fixedly provided with a clamp head, and the clamp head is in a columnar block structure; threaded holes are provided at the center of the two side walls of the clamp head, and circular holes are provided on both sides of the clamp groove; the shape of the clamp groove is adapted to the shape of the clamp head, the maximum spacing of the notches of the clamp groove is greater than the diameter of the clamp head, the clamp head is rotatably installed at the clamp groove through a support bolt, and the outer wall of the clamp head slides close to the inner wall of the clamp groove; The water inlet is arranged on the top surface of the support bar, and one end of the water inlet extending into the clamp is inclined downward and penetrates the outer wall of the clamp; When the support bar is in a horizontal state, the top surface of the support bar is lower than the water surface, and the water inlet is connected to the slag discharge pipe; When the support bar is tilted downward and cannot be moved, the clamp seals the port of the slag discharge pipe.

4. A sedimentation tank for treating wastewater from feed additive production according to claim 3, characterized in that: A support frame is fixedly provided on the bottom surface of the support bar; a bracket is correspondingly fixedly provided on the scraping structure; When the bracket rotates with the main shaft to the slag discharge structure, the support frame is pushed and the support bars are maintained in a flat state.

5. A sedimentation tank for treating wastewater from feed additive production according to claim 4, characterized in that: The scraping structure includes a bracket and a scraping plate; One end of the scraper plate is fixedly connected to the main shaft, the bracket is located below the end of the scraper plate away from the main shaft, the bracket and the scraper plate are connected through a first support rod, and the bracket is located below the slag discharge pipe; One side of the bracket corresponds to one side of the scraper plate, and the other side extends and widens toward the rotation direction of the scraper plate; When the scraper plate rotates and swings to the slag blocking assembly, the bracket maintains support for the support frame.

6. A sedimentation tank for treating wastewater from feed additive production according to claim 5, characterized in that: A side of the support frame close to the clamping head is provided with an inclined guide surface, and the guide surface is inclined downward toward a side close to the slag blocking assembly; A rounded corner is provided at the top edge of the side of the bracket away from the scraper plate; The slag discharge pipe is located at the rotation and swinging track of the support frame. When the guide surface is against the slag discharge pipe, the clamp is in a position to block the port of the slag discharge pipe.

7. A sedimentation tank for treating wastewater from feed additive production according to claim 6, characterized in that: The outer wall of the clamp is provided with a plurality of sealing strips extending along the axial direction.

8. A sedimentation tank for treating wastewater from feed additive production according to claim 6, characterized in that: The slag blocking assembly includes a hanger and a baffle; The bracket is installed on the top of the pool body, and the baffle is rotatably installed on the bottom of the bracket through the rotating shaft, and the bottom of the baffle is not higher than the bottom of the scraper plate; The top surface of the scraper plate is lower than the bottom of the rotating shaft, and the distance between the top surface of the scraper plate and the bottom surface of the hanging bracket is smaller than the thickness of the baffle plate.

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