Food sewage treatment device

Abstract

The invention provides a food sewage treatment device, and relates to the technical field of sewage treatment.The food sewage treatment device comprises a fixed plate fixedly connected in a reaction box, the fixed plate is provided with a communicating opening for sediment to pass through, and the reaction box is divided into a mixing cavity and a sediment cavity through the fixed plate; a communicating plate is rotationally connected to the end, close to the mixing cavity, of the fixing plate, a sealing opening staggered with the communicating opening is formed in the communicating plate, a cleaning plate is rotationally connected into the precipitation cavity, the cleaning plate is arranged in a spiral shape, and the cleaning plate is attached to the bottom wall of the precipitation cavity; a decontamination opening communicated with the precipitation cavity is formed in the reaction box, and the decontamination opening is communicated with the precipitation cavity. According to the invention, sediments at the bottom of the reaction box can be removed without shutdown, and disturbance of sewage in the reaction box during sedimentation due to continuous water feeding can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a food sewage treatment device. Background Art

[0002] When preserving food, it is necessary to use preservatives to preserve the food. Therefore, preservatives are added to water to preserve the food. After the water containing the preservatives is discharged, in order to ensure the requirements of sewage treatment, it is necessary to add a precipitant that can remove related components such as sodium hexametaphosphate contained in the preservative to the discharged sewage, and mix the precipitant and sewage so that the discharged sewage meets environmental requirements.

[0003] Referring to the application document with publication number CN110577302A, entitled A Food Processing Plant Wastewater Treatment Device and Method, the device precipitates the wastewater in a sedimentation chamber, inputs the wastewater into a stirring chamber after the sedimentation is completed, and adds chemical agents such as flocculants into the stirring chamber through a feeding port, and drives the materials in the stirring chamber to stir, so that the chemical agents and the wastewater are fully mixed, and precipitates the wastewater in the stirring chamber after the mixing is completed.

[0004] According to the above technical scheme, when treating food wastewater, it is necessary to stir the sewage mixed with the precipitant so that the precipitant and the sewage are fully mixed. After mixing, the mixture of sewage and the precipitant is allowed to stand to allow the impurities in the mixture to precipitate. In order to ensure the treatment efficiency, the sewage sedimentation device usually works continuously, causing the impurities located below the mixture to flow with the water flow during the stirring process, which may cause the sediment to move with the water flow to the next treatment station. At the same time, when cleaning the sediment, the turbulence of the sewage in the sedimentation tank reduces the precipitation effect of the impurities, affecting the treatment efficiency. Summary of the invention

[0005] In view of this, the present application provides a food wastewater treatment device, which aims to solve the problem of poor impurity precipitation effect when the sedimentation tank is continuously running.

[0006] A food wastewater treatment device provided in the present application adopts the following technical scheme, including a wastewater treatment tank, a reaction tank, a first mixing tank, a second mixing tank and a sedimentation tank, wherein the reaction tank, the first mixing tank, the second mixing tank and the sedimentation tank are all arranged in sequence in the wastewater treatment tank; a fixed plate is fixedly connected to the reaction tank, and a connecting port for the passage of sediment is provided on the fixed plate, the reaction tank is divided into a mixing chamber and a sedimentation chamber via the fixed plate, a connecting plate is rotatably connected to one end of the fixed plate close to the mixing chamber, a closed port is provided on the connecting plate which is staggered with the connecting port, a cleaning plate is rotatably connected to the sedimentation chamber, the cleaning plate is spirally arranged, and the cleaning plate fits the bottom wall of the sedimentation chamber, a decontamination port connected to the sedimentation chamber is provided in the reaction tank, and the decontamination port is connected to the sedimentation chamber.

[0007] By reducing the disturbance of water flow, it helps the sediment to settle better, thereby improving the sedimentation efficiency and reducing the suspended solids in the effluent. At the same time, it can reduce the impact force of the water flow and the disturbance of the sludge layer caused by the impact force of the water flow, ensuring that the sewage has enough residence time in the reaction tank and improving the treatment effect.

[0008] Optionally, the reaction box is provided with a feeding mechanism for mixing sewage and precipitant.

[0009] Optionally, the feeding mechanism includes: a water inlet pipe fixedly connected to the reaction box, the water inlet pipe penetrating the reaction box, a mixing cage rotatably connected in the water inlet pipe, a mixing motor for driving the mixing cage to rotate fixedly connected to the side wall of the water inlet pipe, and a feeding port for pouring the precipitant is opened on the water inlet pipe.

[0010] The mixing cage drives the sewage and the precipitant to rotate and flow, thereby achieving uniform mixing of the sewage and the precipitant, ensuring that the sewage and the precipitant are in full contact to a certain extent. At the same time, due to the good mixing of the sewage and the precipitant, the formation and increase of impurities are promoted, which helps the precipitate to settle faster in the sedimentation stage and improves the sedimentation efficiency.

[0011] Optionally, a mixing sleeve is fixedly connected to the reaction box, a plurality of baffles are fixedly connected to the mixing sleeve, the baffles are inclined, the mixing sleeve is sleeved on the water inlet pipe, and the baffles are used to reduce the impact force of water flowing into the reaction box.

[0012] By setting up the baffle plate, the continuously inflowing liquid can be slowed down, thereby reducing the impact force on the stationary sewage. Reducing the impact force helps to protect the sediment that has already formed and reduce the re-suspension of the sediment due to excessive impact force.

[0013] Optionally, a transmission mechanism for driving the cleaning plate to rotate is provided on the side wall of the reaction box.

[0014] Optionally, the transmission mechanism includes: a rotating motor fixedly connected to the side wall of the reaction box, a rotating gear fixedly connected to the output shaft of the rotating motor, a rotating ring rotatably connected to the inner bottom wall of the reaction box, a rotating tooth groove is provided on the side wall of the rotating ring close to the rotating gear, the rotating tooth groove can engage with the rotating gear, and the rotating ring is fixedly connected to the cleaning plate and can drive the cleaning plate to rotate.

[0015] Optionally, abutment blocks are distributed in a circular array on the rotating ring, the abutment blocks are slidably connected to the rotating ring, and an abutment spring is fixedly connected at the connection between the abutment block and the rotating ring, and the abutment spring is used to push the abutment block to move toward the connecting plate, and the connecting plate is provided with an abutment groove that can engage with the abutment block, and the fixed plate is fixedly connected to a limit block for reducing the rotation of the connecting plate when the rotating ring is reversed.

[0016] The setting of the limit block can reduce the rotation of the connecting plate, and at the same time can reduce the connection between the connecting port and the closed port caused by the irregular rotation of the connecting plate, which causes excessive disturbance of the sediment in the static mixed sewage, thereby increasing the probability of the suspended sediment flowing through the decontamination port to the first mixing box.

[0017] Optionally, a flow port is provided at the connection between the reaction box and the first stirring box, and the flow port is used to allow the liquid at the top of the reaction box to flow into the first stirring box. A sliding baffle is slidably connected to the side wall of the reaction box for blocking the flow port. A rotating screw is fixedly connected to the output shaft of the rotating motor, and a reinforcing rod is threadedly connected to the rotating screw. The reinforcing rod is fixedly connected to the sliding baffle, and a pushing spring is sleeved on the rotating screw to push the reinforcing rod and the threaded end of the rotating screw.

[0018] By setting the sliding baffle, the probability of suspended sediments in the sewage being directly discharged into the first mixing box when the connecting port and the sealed port are connected can be reduced.

[0019] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. By reducing the disturbance of water flow, it helps the sediment to settle better, thereby improving the sedimentation efficiency and reducing the suspended solids in the effluent. At the same time, it can reduce the impact force of the water flow and the disturbance of the sludge layer by the impact force of the water flow, ensuring that the sewage has enough residence time in the reaction tank and improving the treatment effect.

[0020] 2. The mixing cage drives the sewage and the precipitant to rotate and flow, thereby achieving uniform mixing of the sewage and the precipitant, ensuring that the sewage and the precipitant are fully in contact to a certain extent. At the same time, due to the good mixing of the sewage and the precipitant, the formation and increase of impurities are promoted, which helps the sediment to settle faster in the sedimentation stage and improves the sedimentation efficiency.

[0021] 3. The barrier plate can be set to slow down the continuous inflow of liquid, thereby reducing the impact force on the stationary sewage. Reducing the impact force helps to protect the sediment that has been formed and reduce the re-suspension of the sediment due to excessive impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a food wastewater treatment device according to this embodiment; Figure 2 It is a structural schematic diagram of the reaction box of this embodiment; Figure 3 It is a schematic diagram of the structure of the mixing sleeve and the baffle plate of this embodiment; Figure 4 This is a schematic diagram of the structure of the water inlet pipe and the mixing cage of this embodiment; Figure 5 This is an exploded schematic diagram of the connecting plate and the cleaning plate of this embodiment; Figure 6 This is a schematic diagram of the structure of the connecting plate and the rotating ring in this embodiment; Figure 7 For this embodiment Figure 6 A partial enlarged view of the middle area A; Figure 8 It is a schematic diagram of the structure of the sliding baffle and the reinforcing rod of this embodiment.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Sewage treatment tank; 11. Reaction tank; 12. First mixing tank; 13. Second mixing tank; 14. Sedimentation tank; 2. Fixed plate; 21. Connecting port; 22. Mixing chamber; 23. Sedimentation chamber; 24. Connecting plate; 25. Sealed port; 26. Cleaning plate; 27. Decontamination port; 3. Feeding mechanism; 31. Water inlet pipe; 32. Mixing cage; 33. Mixing motor; 34. Feeding port; 4. Mixing sleeve; 41. Blocking plate; 5. Transmission mechanism; 51. Rotating motor; 52. Rotating gear; 53. Rotating ring; 54. Rotating tooth groove; 6. Abutment block; 61. Abutment spring; 62. Abutment groove; 63. Limiting block; 7. Flow port; 71. Sliding baffle; 72. Rotating screw; 73. Reinforcing rod; 74. Push spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 8, the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0025] like Figure 1 and Figure 4 As shown, this embodiment provides a food wastewater treatment device, including a device body, a feeding mechanism 3, a partitioning mechanism, a transmission mechanism 5 and a slow flow mechanism. The wastewater and the precipitant are mixed by the feeding mechanism 3, and after mixing, the mixed liquid is passed into the slow flow mechanism, and flows into the device body through the slow flow mechanism, and the mixture is precipitated in the device body. The partitioning mechanism is intermittently opened by the transmission mechanism 5 to allow the sediment above the partitioning mechanism to fall, and the partitioning mechanism is closed after the sediment falls, and the mixture continues to be precipitated, and this process is repeated.

[0026] like Figure 1 As shown, the device body includes a sewage treatment tank 1, a reaction tank 11, a first stirring tank 12, a second stirring tank 13 and a sedimentation tank 14. The reaction tank 11 is arranged at one end of the sewage treatment tank 1. The reaction tank 11 is used to precipitate sewage and a precipitant in the reaction tank 11. The first stirring tank 12 is close to the reaction tank 11, and the first stirring tank 12 can be connected to the reaction tank 11. The first stirring tank 12 is provided with a stirring component. The sewage precipitated in the reaction tank 11 is passed into the first stirring tank 12, and alkali is added to the first stirring tank 12, and the stirring device is used to stir The second stirring box 13 is arranged at one end of the first stirring box 12 away from the reaction box 11, and a stirring component is arranged in the second stirring box 13. The first stirring box 12 and the second stirring box 13 are connected. The sewage moves to the second stirring box 13 through the first stirring box 12, and polyacrylamide is added to the second stirring box 13, so that the stirring mechanism mixes the polyacrylamide and the sewage. The sedimentation chamber 23 is arranged at one end of the second stirring box 13 away from the first stirring box 12, and the sewage moves to the sedimentation box 14 through the second stirring box 13, so that the sewage is precipitated and mixed.

[0027] like Figure 2 and Figure 4 As shown, the feeding mechanism 3 includes a water inlet pipe 31, a mixing cage 32 and a mixing motor 33. The water inlet pipe 31 is fixedly connected to the reaction box 11, and the water inlet pipe 31 penetrates the reaction box 11. The mixing cage 32 is rotatably connected to the water inlet pipe 31. The output shaft of the mixing motor 33 is fixedly connected to the mixing cage 32. A feeding port 34 for pouring the precipitant is provided on the water inlet pipe 31. The mixing cage 32 is driven to rotate by the mixing motor 33, and sewage is introduced into the water inlet pipe 31, and the precipitant is introduced into the feeding port 34. The rotation of the mixing cage 32 drives the sewage and the precipitant to mix.

[0028] like Figure 3 As shown, a mixing sleeve 4 is fixedly connected to the reaction box 11, the opening of the mixing sleeve 4 is arranged toward the water inlet pipe 31, and a plurality of baffles 41 are fixedly connected to the inner wall of the mixing sleeve 4, and the baffles 41 are arranged obliquely. The mixture of sewage and precipitant is rushed into the bottom wall of the mixing sleeve 4 through the water inlet pipe 31, and moves toward the opening of the mixing sleeve 4 under the action of gravity. During the movement, the baffles 41 block the impact force of the water flow, thereby reducing the impact force of the water flow.

[0029] like Figure 4 , Figure 5 As shown, the partition mechanism includes a fixed plate 2, a mixing chamber 22, a sedimentation chamber 23, a connecting plate 24 and a cleaning plate 26. The fixed plate 2 is fixedly connected to the reaction box 11, and a connecting port 21 for the sediment to pass through is provided on the fixed plate 2. The mixing chamber 22 is arranged at the upper position of the fixed plate 2, and the sedimentation chamber 23 is arranged at the lower position of the fixed plate 2. The connecting plate 24 is arranged in the mixing chamber 22, and the connecting plate 24 is rotatably connected to the reaction box 11. A sealed port 25 is provided on the connecting plate 24 and is offset from the connecting port 21. The cleaning plate 26 is rotatably connected to the sedimentation chamber 23, and the cleaning plate 26 is arranged in a threaded shape, and the cleaning plate 26 is attached to the bottom wall of the sedimentation chamber 23. The side wall of the reaction box 11 is provided with a decontamination port 27 connected to the sedimentation chamber 23. The connecting plate 24 rotates to close and connect the connecting port 21 and the sealed port 25 , so that the material above the fixed plate 2 falls into the sedimentation chamber 23 , and the impurities in the sedimentation chamber 23 are removed through the decontamination port 27 during the rotation of the cleaning plate 26 .

[0030] like Figure 3 , Figure 4 and Figure 6 As shown, the transmission mechanism 5 includes a rotating motor 51, a rotating gear 52 and a rotating ring 53. The rotating motor 51 is fixedly connected to the side wall of the reaction box 11, the rotating gear 52 is fixedly connected to the output shaft of the rotating motor 51, and the rotating ring 53 is rotatably connected to the inner bottom wall of the reaction box 11. A rotating tooth groove 54 is provided on the side of the rotating ring 53 close to the rotating gear 52, and the rotating tooth groove 54 can mesh with the rotating gear 52. The rotating ring 53 is fixedly connected to the cleaning plate 26 and can drive the cleaning plate 26 to rotate.

[0031] like Figure 5 , Figure 6 and Figure 7As shown, abutment blocks 6 are distributed in a circular array on the rotating ring 53, and the abutment blocks 6 are slidably connected to the rotating ring 53. An abutment spring 61 is fixedly connected to the rotating ring 53, and one end of the abutment spring 61 is fixedly connected to the rotating ring 53, and the other end is fixedly connected to the abutment block 6. The abutment spring 61 is used to push the abutment block 6 to move toward the connecting plate 24. The connecting plate 24 is provided with a plurality of abutment grooves 62 that can engage with the abutment block 6. The upper end of the abutment block 6 is set to a right triangle, which is used to drive the connecting plate 24 to rotate when the rotating motor 51 is reversed. When the rotating motor 51 rotates forward, the side wall of the abutment groove 62 pushes the abutment block 6 to move away from the connecting plate 24. A limit block 63 is fixedly connected to the fixed plate 2 to reduce the rotation of the connecting plate 24 when the rotating ring 53 is reversed.

[0032] like Figure 8 As shown, a flow port 7 is opened at the side wall of the reaction box 11, and the flow port 7 is connected to the first stirring box 12. The flow port 7 is used to allow the liquid in the reaction box 11 to flow into the first stirring box 12. A sliding baffle 71 for blocking the flow port 7 is slidably connected to the side wall of the reverse box. A rotating screw 72 is fixedly connected to the output shaft of the rotating motor 51. A reinforcing rod 73 is threadedly connected to the rotating screw 72. The reinforcing rod 73 is fixedly connected to the sliding baffle 71. The rotating screw 72 is sleeved with a pushing spring 74 for pushing the reinforcing rod 73 and the threaded end of the rotating screw 72.

[0033] When the present application is in use, sewage is introduced into the water inlet pipe 31, and the mixing motor 33 is started, the mixing motor 33 drives the mixing cage 32 in the water inlet pipe 31 to rotate, and the precipitant is introduced into the feed port 34, the precipitant enters the water inlet pipe 31 through the feed port 34, the sewage and the precipitant are mixed by the rotation of the mixing cage 32, the precipitant and the sewage are mixed, and enter the top position of the mixing sleeve 4 and flow out of the mixing sleeve 4, after flowing out of the mixing sleeve 4, flow into the baffle plate 41, and flow into the reaction box 11 under the obstruction of the baffle plate 41, and in this process, the mixture of sewage and the precipitant is continuously introduced into the reaction box 11.

[0034] Start the rotating motor 51 so that the output shaft of the rotating motor 51 drives the rotating gear 52 to rotate. The rotating gear 52 drives the meshing rotating ring 53 to rotate. The abutment block 6 on the rotating ring 53 moves upward under the push of the abutment spring 61, so that the abutment block 6 abuts against the abutment groove 62, and drives the connecting plate 24 to rotate, so that the connection between the connecting port 21 and the sealed port 25 is closed, and the mixture of sewage and precipitant flows onto the fixed plate 2.

[0035] After the mixture is precipitated, impurities are accumulated on the fixed plate 2, and the rotating motor 51 is started. The output shaft of the rotating motor 51 continuously drives the connecting plate 24 to rotate, so that the connecting port 21 and the closed port 25 are connected, and the impurities at the bottom of the mixture move to the sedimentation chamber 23 through the connection. The rotating motor 51 drives the connecting plate 24 to rotate, and the connection between the connecting port 21 and the closed port 25 is blocked. The rotating motor 51 is reversed, and the abutment block 6 moves downward under the push of the side wall of the abutment groove 62, so that the rotating ring 53 drives the cleaning plate 26 to rotate, and the material on the cleaning plate 26 at the bottom of the sedimentation chamber 23 is scraped, and the impurities in the cleaning plate 26 are moved to the decontamination port 27 to discharge the impurities.

[0036] When the connecting port 21 and the sealed port 25 are connected, the output shaft of the rotating motor 51 rotates forward, driving the rotating screw rod 72 to rotate. The rotating screw rod 72 rotates and drives the reinforcing rod 73 to move upward, so that the reinforcing rod 73 drives the sliding baffle 71 to move upward, and the sliding baffle 71 blocks the flow port 7. During the reversal of the rotating motor 51, the rotating screw rod 72 drives the reinforcing rod 73 to move downward, so that the reinforcing rod 73 drives the sliding baffle 71 to move downward, so that the sliding baffle 71 releases the blockage of the flow port 7.

[0037] The sewage after precipitation is moved to the first stirring box 12 through the flow port 7, the sewage after precipitation in the reaction box 11 is passed into the first stirring box 12, and alkali is added into the first stirring box 12, and is fully mixed by a stirring device, the sewage is moved to the second stirring box 13 through the first stirring box 12, and polyacrylamide is added into the second stirring box 13, so that the stirring mechanism mixes the polyacrylamide and the sewage, the precipitation chamber 23 is arranged at one end of the second stirring box 13 away from the first stirring box 12, the sewage is moved to the precipitation box 14 through the second stirring box 13, so that the sewage is precipitated and mixed.

[0038] In this embodiment, sewage and precipitant are mixed by using a mixing cage 32, and the mixed mixture is passed into the mixing sleeve 4, and the baffle plate 41 is used to reduce the mixture from falling directly into the reaction box 11. In the process of continuous water intake and mixing, the disturbance of the sewage and precipitant mixture added subsequently to the sewage and precipitant mixture previously added can be reduced, the water quality in the reaction box 11 is maintained stable, and the influence of the subsequent sewage addition on the precipitation of the mixture added previously is reduced.

[0039] In this embodiment, the reaction box 11 is divided into a mixing chamber 22 and a sedimentation chamber 23 by setting the connecting plate 24 and the fixed plate 2. In the process of sewage sedimentation, the mixing chamber 22 can ensure that the sewage and the precipitant are fully mixed, and reduce the sedimentation effect of the sewage on the sewage that enters first under the blocking of the baffle plate 41. At the same time, after a certain period of sedimentation, the mixing chamber 22 and the sedimentation chamber 23 are connected, which can control the falling of the sediment in a timely manner to avoid the sedimentation of the sediment too early or too late, thereby ensuring the quality of the sediment and the treatment effect.

[0040] In this embodiment, by periodically driving the cleaning plate 26 to rotate, the spirally arranged cleaning plate 26 moves the impurities in the sedimentation chamber 23 to the discharge port, thereby ensuring regular cleaning of the sediment. At the same time, by the forward and reverse rotation of the rotating motor 51, the rotating ring 53 and the connecting plate are rotated periodically at the same time, which can reduce the frequent connection between the connecting port 21 and the sealed port 25 due to the rotation of the rotating motor 51, and at the same time can reduce the problem of excessive frequency of disturbance of the mixture due to frequent connection between the connecting port 21 and the sealed port.

[0041] In this embodiment, by periodically driving the sliding baffle 71 to move upward, the probability of impurities on the fixed plate 2 directly entering the first mixing box 12 from the flow port 7 driven by sewage due to water flow disturbance when the connecting port 21 and the closed port 25 are connected can be reduced, thereby enhancing the stability of the sedimentation.

[0042] The implementation principle of a food wastewater treatment device in the embodiment of the present application is as follows: the wastewater is introduced into the water inlet pipe 31, and the mixing motor 33 is started, the mixing motor 33 drives the mixing cage 32 in the water inlet pipe 31 to rotate, and the precipitant is introduced into the feed port 34, the precipitant enters the water inlet pipe 31 through the feed port 34, and the wastewater and the precipitant are mixed by the rotation of the mixing cage 32. After the precipitant and the wastewater are mixed, they enter the top position of the mixing sleeve 4 and flow out of the mixing sleeve 4. After flowing out of the mixing sleeve 4, they fall into the baffle plate 41, and flow into the reaction box 11 under the obstruction of the baffle plate 41, and in this process, the mixture of wastewater and the precipitant is continuously introduced into the reaction box 11.

[0043] Start the rotating motor 51 so that the output shaft of the rotating motor 51 drives the rotating gear 52 to rotate. The rotating gear 52 drives the meshing rotating ring 53 to rotate. The abutment block 6 on the rotating ring 53 moves upward under the push of the abutment spring 61, so that the abutment block 6 abuts against the abutment groove 62, and drives the connecting plate 24 to rotate, so that the connection between the connecting port 21 and the sealed port 25 is closed, and the mixture of sewage and precipitant flows onto the fixed plate 2.

[0044] After the mixture is precipitated, impurities are accumulated on the fixed plate 2, and the rotating motor 51 is started. The output shaft of the rotating motor 51 continuously drives the connecting plate 24 to rotate, so that the connecting port 21 and the closed port 25 are connected, and the impurities at the bottom of the mixture move to the sedimentation chamber 23 through the connection. The rotating motor 51 drives the connecting plate 24 to rotate, and the connection between the connecting port 21 and the closed port 25 is blocked. The rotating motor 51 is reversed, and the abutment block 6 moves downward under the push of the side wall of the abutment groove 62, so that the rotating ring 53 drives the cleaning plate 26 to rotate, and the material on the cleaning plate 26 at the bottom of the sedimentation chamber 23 is scraped, and the impurities in the cleaning plate 26 are moved to the decontamination port 27 to discharge the impurities.

[0045] When the connecting port 21 and the sealed port 25 are connected, the output shaft of the rotating motor 51 rotates forward, driving the rotating screw rod 72 to rotate. The rotating screw rod 72 rotates and drives the reinforcing rod 73 to move upward, so that the reinforcing rod 73 drives the sliding baffle 71 to move upward, and the sliding baffle 71 blocks the flow port 7. During the reversal of the rotating motor 51, the rotating screw rod 72 drives the reinforcing rod 73 to move downward, so that the reinforcing rod 73 drives the sliding baffle 71 to move downward, so that the sliding baffle 71 releases the blockage of the flow port 7.

[0046] The sewage after precipitation is moved to the first stirring box 12 through the flow port 7, the sewage after precipitation in the reaction box 11 is passed into the first stirring box 12, and alkali is added into the first stirring box 12, and is fully mixed by a stirring device, the sewage is moved to the second stirring box 13 through the first stirring box 12, and polyacrylamide is added into the second stirring box 13, so that the stirring mechanism mixes the polyacrylamide and the sewage, the precipitation chamber 23 is arranged at one end of the second stirring box 13 away from the first stirring box 12, the sewage is moved to the precipitation box 14 through the second stirring box 13, so that the sewage is precipitated and mixed.

[0047] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A food wastewater treatment device, comprising a wastewater treatment tank (1), a reaction tank (11), a first stirring tank (12), a second stirring tank (13) and a sedimentation tank (14), wherein the reaction tank (11), the first stirring tank (12), the second stirring tank (13) and the sedimentation tank (14) are arranged in sequence in the wastewater treatment tank (1) according to the direction of water flow, and characterized in that: The reaction box (11) is fixedly connected to a fixed plate (2), and a connecting port (21) is provided on the fixed plate (2) for sediment to pass through. The reaction box (11) is divided into a mixing chamber (22) and a sedimentation chamber (23) via the fixed plate (2). A connecting plate (24) is rotatably connected to one end of the fixed plate (2) close to the mixing chamber (22). A sealed port (25) is provided on the connecting plate (24) and is arranged offset from the connecting port (21). A cleaning plate (26) is rotatably connected to the sedimentation chamber (23). The cleaning plate (26) is arranged in a spiral shape and fits the bottom wall of the sedimentation chamber (23). A decontamination port (27) is provided in the reaction box (11) and is communicated with the sedimentation chamber (23). The decontamination port (27) is communicated with the sedimentation chamber (23).

2. A food wastewater treatment device according to claim 1, characterized in that: The reaction box (11) is provided with a feeding mechanism (3) for mixing sewage and a precipitant.

3. A food wastewater treatment device according to claim 2, characterized in that: The feeding mechanism (3) comprises a water inlet pipe (31) fixedly connected to the reaction box (11), the water inlet pipe (31) penetrating the reaction box (11), a mixing cage (32) rotatably connected to the water inlet pipe (31), a mixing motor (33) for driving the mixing cage (32) to rotate fixedly connected to the side wall of the water inlet pipe (31), and a feeding port (34) for pouring the precipitant is provided on the water inlet pipe (31).

4. A food wastewater treatment device according to claim 3, characterized in that: A mixing sleeve (4) is fixedly connected to the reaction box (11), a plurality of baffles (41) are fixedly connected to the mixing sleeve (4), the baffles (41) are arranged obliquely, the mixing sleeve (4) is sleeved on the water inlet pipe (31), and the baffles (41) are used to reduce the impact force of water entering the reaction box (11).

5. A food wastewater treatment device according to claim 1, characterized in that: A transmission mechanism (5) for driving the cleaning plate (26) to rotate is provided on the side wall of the reaction box (11).

6. A food wastewater treatment device according to claim 5, characterized in that: The transmission mechanism (5) comprises a rotating motor (51) fixedly connected to a side wall of a reaction box (11); a rotating gear (52) is fixedly connected to an output shaft of the rotating motor (51); a rotating ring (53) is rotatably connected to an inner bottom wall of the reaction box (11); a rotating tooth groove (54) is formed on a side wall of the rotating ring (53) close to the rotating gear (52); the rotating tooth groove (54) is capable of meshing with the rotating gear (52); and the rotating ring (53) is fixedly connected to the cleaning plate (26) and is capable of driving the cleaning plate (26) to rotate.

7. A food wastewater treatment device according to claim 6, characterized in that: Abutment blocks (6) are distributed in a circumferential array on the rotating ring (53), the abutment blocks (6) are slidably connected to the rotating ring (53), an abutment spring (61) is fixedly connected to the connection between the abutment block (6) and the rotating ring (53), the abutment spring (61) is used to push the abutment block (6) to move toward the connecting plate (24), the connecting plate (24) is provided with an abutment groove (62) capable of engaging with the abutment block (6), and a limit block (63) is fixedly connected to the fixed plate (2) for reducing the rotation of the connecting plate (24) when the rotating ring (53) is reversed.

8. A food wastewater treatment device according to claim 6, characterized in that: A flow port (7) is provided at the connection between the reaction box (11) and the first stirring box (12), and the flow port (7) is used to allow liquid at the top of the reaction box (11) to flow into the first stirring box (12). A sliding baffle (71) is slidably connected to the side wall of the reaction box (11) for blocking the flow port (7). A rotating screw (72) is fixedly connected to the output shaft of the rotating motor (51), and a reinforcing rod (73) is threadedly connected to the rotating screw (72). The reinforcing rod (73) is fixedly connected to the sliding baffle (71), and a pushing spring (74) is sleeved on the rotating screw (72) for pushing the reinforcing rod (73) and the threaded end of the rotating screw (72) to be connected.

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