A sludge thickening device and its control method

Abstract

The present invention relates to the technical field of sludge treatment, and discloses a sludge concentration device and its control method, including a mixing tank, and further including a driving component, wherein the driving component is arranged at the top of the mixing tank; a feeding component, wherein the feeding component is arranged on the driving component; a chemical adding component, wherein the chemical adding component is rotatably arranged inside the mixing tank, and the chemical adding component is connected to the driving component; the chemical adding component includes a first conduit, a material distributing plate is arranged at the upper end of the first conduit, and a material guiding box is arranged at the lower end of the first conduit. The present invention can directly introduce the chemical agent into the sludge, quickly mix the chemical agent into the sludge, improve the mixing efficiency of the chemical agent and the sludge. At the same time, the chemical adding component arranged inside the present invention can not only add the chemical agent, but also stir the chemical agent and the sludge, improve the stirring effect of the chemical agent and the sludge, and when it is necessary to discharge the sludge, the sludge can be discharged through the chemical adding component.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to a sludge concentrating device and a control method thereof. Background Art

[0002] Sludge is one of the main by-products of sewage treatment, accounting for about 0.3%-0.5% (volume) or 1%-2% (mass) of the sewage treatment volume. With the development of industrial and agricultural production and the continuous construction of sewage treatment plants in various places, the amount of industrial and domestic sewage treatment in my country is increasing rapidly, which is bound to produce more sludge.

[0003] When an emergency occurs during the treatment of existing sludge dosing equipment, it is necessary to increase the dosage of the agent in a short period of time to speed up the treatment process. The existing device can only add the agent quickly, but the agent cannot be quickly mixed into the sludge, and when adding the agent later, adding a large amount of agent in a short period of time cannot be accurately controlled. Adding too much agent can easily cause the sludge to become sticky, and adding too little agent can easily cause poor dehydration effect.

[0004] To this end, we propose a sludge thickening device and a control method thereof to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a sludge thickening device and a control method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a sludge thickening device and a control method thereof, comprising a mixing box and a driving assembly, wherein the driving assembly is arranged on the top of the mixing box;

[0007] A feeding assembly, wherein the feeding assembly is arranged on the driving assembly;

[0008] A dosing assembly, which is rotatably disposed inside the mixing box and is connected to a driving assembly;

[0009] The dosing component includes a catheter 1, a material distribution plate is provided at the upper end of the catheter 1, a material guide box is provided at the lower end of the catheter 1, a plurality of catheters 2 are provided around the material guide box, a threaded sheet fixing rod is rotatably provided inside the catheter 2, a conveying threaded sheet is provided outside the threaded sheet fixing rod, a drug guide plate is provided above the catheter 2, evenly distributed through holes are provided on both sides of the drug guide plate, nozzles are provided in the through holes on both sides, a accommodating cavity is provided inside the drug guide plate, a through hole is provided at one end of the drug guide plate close to the catheter 1, a control rod is provided in the through hole at one end of the drug guide plate, a push ring is provided at one end of the control rod, and the push ring is slidably provided in the accommodating cavity, an end of the control rod is connected to a switching assembly away from the drug guide plate, and the switching assembly is provided in the catheter 1.

[0010] With the above technical solution, the driving component serves as a power source. The driving component is used to drive the chemical dosing component to perform chemical dosing and mixing and stirring, and the feeding component plays the role of introducing sludge and chemicals. During the operation of the chemical dosing component, the first conduit can drive the material guiding box and the second conduit to rotate, and the second conduit can stir the sludge and chemicals inside the mixing box, enhancing the mixing effect of the sludge.

[0011] Preferably, the driving component includes a transmission box. Inside the transmission box, a third conduit is rotatably arranged. The third conduit is drivingly connected to a motor, and the motor is fixed on the outer wall of the transmission box.

[0012] With the above technical solution, the driving component plays the role of controlling the first conduit. The motor can drive the third conduit to rotate, and the third conduit then drives the driving distribution plate and the first conduit to rotate.

[0013] Preferably, the feeding component includes a sludge inlet pipe, a chemical inlet pipe, and a sludge outlet pipe. The sludge inlet pipe is fixed on the outer wall of the mixing box. One end of the chemical inlet pipe is connected to a first control valve. The first control valve is rotatably connected to the upper end of the third conduit. The first control valve is internally connected to the inside of the conveying pipe. One end of the sludge outlet pipe is connected to a second control valve. The second control valve is rotatably arranged at the bottom of the mixing box, and the second control valve is internally connected to the inside of the material guiding box.

[0014] With the above technical solution, the feeding component plays the role of controlling the introduction of sludge and chemicals, and can export the sludge inside the mixing box through the sludge outlet pipe.

[0015] Preferably, the inside of the distribution plate is hollow, and uniformly distributed through holes are formed at the bottom of the distribution plate. The distribution plate is internally connected to the inside of the first conduit.

[0016] With the above technical solution, the distribution plate plays the role of diverting the sludge. The sludge inside the distribution plate can be exported through the through holes at its bottom, and the sludge is introduced into the mixing box, enhancing the mixing effect of the sludge.

[0017] Preferably, the inside of the conveying pipe is hollow, and spiral blades are arranged on the outside of the conveying pipe. The spiral blades on the outside of the conveying pipe are inside the first conduit. The upper end of the conveying pipe passes through the control rod and is connected to one end of the third conduit.

[0018] With the above technical solution, one end of the conveying pipe is fixedly connected to the first control valve. When the first conduit rotates, a relative movement is formed between the first conduit and the first conduit.

[0019] Preferably, the adapter assembly includes a rotating seat, the interior of the rotating seat is hollow, and the upper end of the rotating seat is connected to the lower end of the conveying pipe, the rotating seat is provided with protrusions corresponding to the position of the control rod around, and the protrusions are provided with through holes, one end of the control rod is inserted into the through hole of the protrusion, an annular control plate is fixed to the outside of the control rod, one side of the control plate is connected to a spring, the other end of the spring is fixed to the inner wall of the conduit one, the inner wall of the conduit one is provided with a control block, and the outside of the control block is an arc-shaped protrusion.

[0020] Through the above technical solution, the adapter component plays the role of transferring and guiding the flow of medicine.

[0021] Preferably, circular through holes are provided on both sides of the medicine guiding plate, and one-way valve films are provided in the circular through holes on both sides of the medicine guiding plate.

[0022] Through the above technical solution, the through holes on both sides of the medicine guide plate play the role of installing the one-way valve film.

[0023] Preferably, the outer wall of the push ring is provided with annular through holes, and a film is provided on a side of the push ring away from the control rod, the outer part of the film is annular, and the position of the film corresponds to the outer through holes of the push ring.

[0024] Through the above technical solution, when the push ring moves with the control rod, the push ring and the film can drive the sludge or water inside the accommodating cavity to move.

[0025] Preferably, two one-way bearings with opposite braking directions are arranged on the outside of one end of the threaded sheet fixing rod, and sub-gear 1 and sub-gear 2 are arranged on the outside of the two one-way bearings at one end of the threaded sheet fixing rod respectively, sub-gear 2 is meshed with main gear 1, and the lower end of main gear 1 is connected to main gear 2, and main gear 2 is fixed to the inner bottom of the mixing box, and the outer sleeve of the threaded sheet fixing rod is provided with an isolation sleeve, and the isolation sleeve is arranged on the outside of main gear 1 and main gear 2.

[0026] Through the above technical solution, the two one-way bearings outside the threaded piece fixing rod play the role of fixing the auxiliary gear 1 and the auxiliary gear 2, and controlling the conveying threaded piece to convey the sludge.

[0027] A control method for a sludge thickening device comprises the following steps:

[0028] S1: Add sludge and introduce the sludge into the reagent inlet pipe through the sludge inlet pipe;

[0029] S2: Add the agent, open the control valve 1, introduce the agent into the delivery pipe through the agent inlet pipe, then the delivery pipe introduces the agent into the rotating seat, and introduces the agent into the containing chamber through the rotating seat and the control rod, and the agent in the containing chamber enters the mixing box through the nozzle;

[0030] S3: Stir, start the motor. The motor rotates forward, driving the third conduit to rotate. The third conduit drives the material distribution plate and the first conduit to rotate. Then the first conduit drives the material guiding box and the second conduit to rotate. While the second conduit stirs the sludge inside the mixing box, it drives the medicine guiding plate to rotate. The medicine guiding plate will introduce the medicine into the mixing box, and the threaded piece fixing rod will rotate together. And the fixed main gear two will drive the threaded piece fixing rod to rotate. Then the threaded piece fixing rod drives the conveying threaded piece to rotate. The conveying threaded piece introduces the sludge near the second conduit into the first conduit. The first conduit introduces the sludge into the material distribution plate, and through the material distribution plate, the sludge is re-introduced to the top of the sludge inside the mixing box. After stirring the sludge well, then turn off the motor;

[0031] S4: Export the sludge, start the motor. The motor rotates reversely. The motor drives the material guiding box and the second conduit to rotate reversely through the third conduit and the first conduit. At the same time, the second sub-gear cooperates with the first main gear, and the second sub-gear drives the threaded piece fixing rod to rotate. At this time, open the control valve two, and the sludge inside the mixing box is exported through the control valve two and the sludge outlet pipe.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] First, the present invention can directly introduce the medicine into the sludge, quickly mix the medicine into the sludge, improve the mixing efficiency of the medicine and the sludge. At the same time, the medicine adding component set inside the present invention can not only add the medicine, but also stir the medicine and the sludge, improve the stirring effect of the medicine and the sludge, and when the sludge needs to be exported, the sludge can be exported through the medicine adding component.

[0034] Second, in the present invention, the driving component can drive the first conduit to rotate, drive the second conduit to rotate through the first conduit. The second conduit is provided with a conveying threaded piece, and the conveying threaded piece conveys the sludge inside the mixing box. When the sludge needs to be mixed, close the control valve two. The sludge inside the second conduit can enter the first conduit and the material distribution plate, and through the material distribution plate, the sludge is re-introduced into the mixing box, increasing the mixing effect of the medicine and the sludge.

[0035] Thirdly, in the present invention, when it is necessary to stir the medicament and the sludge, the medicine guide plate can rotate together with the second conduit. When the medicine guide plate rotates, the medicine guide plate can evenly introduce the medicament into the mixing tank. After introducing the medicament, the control valve 1 is closed. At this time, the control plate will rotate together with the second conduit. The control plate can cooperate with the control block, and the control block can squeeze the control plate. After the control plate is separated from the control block, the control plate returns to its original position under the action of the spring, controlling the control rod to move reciprocally. The control rod can control the push ring to move reciprocally. When the push ring moves inside the accommodation cavity, a negative pressure will be generated inside the accommodation cavity, and the one-way valve film connected to the accommodation cavity will absorb the sludge or water inside the mixing tank. When the sludge or water enters the accommodation cavity, the sludge or water enters the mixing tank through the spray pipe, enhancing the mixing effect of the sludge and the medicament, and at the same time, the remaining medicament inside the medicine guide plate can be exported, increasing the utilization effect of the medicament.

[0036] Fourthly, in the present invention, when it is necessary to export the sludge inside the mixing tank, the control valve 2 is opened, and the second conduit is rotated in the reverse direction. The second conduit can transport the sludge to the connection part of the control valve 2. Under the action of the gravity of the sludge, the sludge will not enter the distribution plate along the first conduit. At this time, the sludge will directly be exported from the control valve 2 and the sludge outlet pipe. Description of the Drawings

[0037] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0038] Figure 2 Schematic diagram of the overall structure of the present invention Figure 2 ;

[0039] Figure 3 Partial cross-section of the mixing tank in the present invention Figure 1 ;

[0040] Figure 4 Partial cross-section of the mixing tank in the present invention Figure 2 ;

[0041] Figure 5 Schematic diagram of the structure of the second conduit in the present invention Figure 1 ;

[0042] Figure 6 Schematic diagram of the structure of the second conduit in the present invention Figure 2 ;

[0043] Figure 7 Schematic diagram of the structure of the delivery pipe in the present invention;

[0044] Figure 8 In the present invention Figure 6 Schematic diagram of the enlarged structure at A;

[0045] Figure 9 In the present invention Figure 6 Schematic enlarged structure view at position B in

[0046] Figure 10 In the present invention Figure 7 Schematic enlarged structure view at position C in

[0047] Figure 11 In the present invention Figure 7 Schematic enlarged structure view at position D in

[0048] Figure 12 Top view of the control block in the present invention;

[0049] Figure 13 Schematic structure view of the isolation sleeve in the present invention.

[0050] In the figure: 1, mixing tank; 2, chemical agent inlet pipe; 3, transmission box; 4, control valve I; 5, motor; 6, sludge inlet pipe; 7, sludge outlet pipe; 8, control valve II; 9, distribution plate; 10, conduit I; 11, conduit II; 12, chemical agent guiding plate; 13, conduit III; 14, conveying pipe; 15, conveying thread piece; 16, material guiding box; 17, control board; 18, spring; 19, control rod; 20, main gear I; 21, thread piece fixing rod; 22, auxiliary gear I; 23, auxiliary gear II; 24, main gear II; 25, rotating seat; 26, spray pipe; 27, accommodating cavity; 28, pushing ring; 29, film; 30, one-way valve film; 31, control block; 32, isolation sleeve. Detailed implementation manners

[0051] In the description of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052] A sludge concentration device and its control method. Please refer to Figure 1 - Figure 13 It includes a mixing tank 1, and is characterized in that it further includes a driving assembly, and the driving assembly is arranged on the top of the mixing tank 1;

[0053] A feeding assembly, and the feeding assembly is arranged on the driving assembly;

[0054] A chemical agent adding assembly, and the chemical agent adding assembly is rotatably arranged inside the mixing tank 1, and the chemical agent adding assembly is connected to the driving assembly;

[0055] The dosing component includes a catheter 10, a material distribution plate 9 is provided at the upper end of the catheter 10, a material guide box 16 is provided at the lower end of the catheter 10, a plurality of catheters 11 are provided around the material guide box 16, a threaded sheet fixing rod 21 is rotatably provided inside the catheter 11, a conveying threaded sheet 15 is provided outside the threaded sheet fixing rod 21, a drug guide plate 12 is provided above the catheter 11, both sides of the drug guide plate 12 are provided with evenly distributed through holes, nozzles 26 are provided in the through holes on both sides, a accommodating cavity 27 is provided inside the drug guide plate 12, a through hole is provided at one end of the drug guide plate 12 close to the catheter 10, a control rod 19 is provided in the through hole at one end of the drug guide plate 12, a push ring 28 is provided at one end of the control rod 19, and the push ring 28 is slidably provided in the accommodating cavity 27, and an adapter component is connected to the end of the control rod 19 away from the drug guide plate 12, and the adapter component is provided in the catheter 10.

[0056] The driving component serves as a power source, and the driving component is used to drive the dosing component to add medicine and mix and stir, and the feeding component plays the role of introducing sludge and medicine. During the operation of the dosing component, the conduit 10 can drive the guide box 16 and the conduit 2 11 to rotate, and the conduit 2 11 can stir the sludge and medicine inside the mixing box 1, and at the same time, the medicine guide plate 12 arranged above the conduit 2 11 will move together. When moving, the medicine guide plate 12 can evenly introduce the medicine into the sludge, thereby increasing the mixing effect of the sludge and the medicine. A threaded sheet fixing rod 21 and a conveying threaded sheet 15 are arranged inside the conduit 2 11. The conveying threaded sheet 15 can suck in the sludge near the conduit 2 11, and the conveying threaded sheet 15 introduces the sludge into the conduit 10. The sludge inside the conduit 10 enters the distribution plate 9 (described below), and the sludge is re-introduced into the mixing box 1 through the distribution plate 9, thereby increasing the mixing effect of the sludge.

[0057] The driving assembly includes a transmission box 3 , and a guide tube 3 13 is rotatably arranged inside the transmission box 3 . The guide tube 3 13 is transmission-connected to a motor 5 , and the motor 5 is fixed to the outer wall of the transmission box 3 .

[0058] The driving assembly plays the role of controlling the conduit 10. The motor 5 can drive the conduit 3 13 to rotate, and the conduit 3 13 then drives the driving distribution plate 9 and the conduit 10 to rotate.

[0059] The feeding assembly includes a sludge inlet pipe 6, a chemical inlet pipe 2 and a sludge outlet pipe 7. The sludge inlet pipe 6 is fixed on the outer wall of the mixing box 1. One end of the chemical inlet pipe 2 is connected to a control valve 4, which is rotatably connected to the upper end of the conduit 3 13. The control valve 4 is connected to the interior of the conveying pipe 14. One end of the sludge outlet pipe 7 is connected to a control valve 2 8, which is rotatably set at the bottom of the mixing box 1, and the control valve 2 8 is connected to the interior of the material guide box 16.

[0060] The feeding assembly plays a role in controlling the introduction of sludge and chemicals. The sludge inlet pipe 6 can directly introduce the sludge into the mixing box 1 to supplement the sludge inside the mixing box 1. The chemical inlet pipe 2 can introduce the chemical. The chemical inlet pipe 2 is controlled by a control valve 4. The amount of chemical introduced is controlled by the control valve 4. The control valve 4 is rotatably connected to the conduit three 13. The conduit three 13 will not affect the control valve 4 when rotating. When the control valve two 8 is opened, the sludge inside the mixing box 1 can be discharged through the sludge outlet pipe 7.

[0061] The inside of the material distribution plate 9 is hollow, and the bottom of the material distribution plate 9 is provided with evenly distributed through holes, and the material distribution plate 9 is connected with the inside of the conduit 10.

[0062] The dividing plate 9 plays the role of diverting the sludge. The sludge inside the dividing plate 9 can be discharged through the through holes at the bottom thereof, and the sludge is introduced into the mixing box 1 to increase the mixing effect of the sludge.

[0063] The interior of the delivery pipe 14 is hollow, and a spiral blade is arranged outside the delivery pipe 14. The spiral blade outside the delivery pipe 14 is located inside the conduit 1 10. The upper end of the delivery pipe 14 passes through the control rod 19 and is connected to one end of the conduit 3 13.

[0064] One end of the conveying pipe 14 is fixedly connected to the control valve 4. When the conduit 10 rotates, the conduit 10 and the conduit 10 form relative motion, and when the conduit 10 rotates, the spiral blades outside the conveying pipe 14 cooperate with the conduit 10. When the sludge passes through the conduit 10, the sludge can pass a longer distance, and the sludge can be squeezed against each other. When the sludge moves along the spiral blades, the mixing effect of the sludge can be increased.

[0065] The adapter assembly includes a rotating seat 25, the interior of the rotating seat 25 is hollow, and the upper end of the rotating seat 25 is connected to the lower end of the conveying pipe 14. The rotating seat 25 is provided with protrusions corresponding to the position of the control rod 19 around it, and a through hole is provided on the protrusion. One end of the control rod 19 is inserted into the through hole of the protrusion. An annular control plate 17 is fixed to the outside of the control rod 19. A spring 18 is connected to one side of the control plate 17. The other end of the spring 18 is fixed to the inner wall of the conduit 10. A control block 31 is provided on the inner wall of the conduit 10, and the outside of the control block 31 is an arc-shaped protrusion.

[0066] The transfer component plays a role in redirecting and guiding the flow of the medicament. The delivery pipe 14 can introduce the medicament into the rotating seat 25, and the rotating seat 25 can introduce the medicament into the control rod 19. The medicament is introduced into the receiving cavity 27 through the control rod 19 for the delivery of the medicament. Moreover, the delivery pipe 14 is rotatably connected to the rotating seat 25. When the control rod 19 rotates together with the second conduit 11, the delivery pipe 14 can still deliver the medicament. At the same time, when the control rod 19 rotates, the control plate 17 outside the control rod 19 will contact the control block 31. By squeezing the control plate 17 through the control block 31, the control plate 17 will move towards the rotating seat 25 and stretch the spring 18. When the control plate 17 moves away from the position of the control block 31, the stretched spring 18 can pull the control plate 17 back to its original position, controlling the reciprocating movement of the control rod 19 and playing a role in controlling the control rod 19.

[0067] Circular through-holes are formed on both sides of the medicine guiding plate 12, and one-way valve films 30 are arranged in the circular through-holes on both sides of the medicine guiding plate 12.

[0068] The through-holes on both sides of the medicine guiding plate 12 serve to install the one-way valve films 30. The outer ring of the one-way valve film 30 is stuck in the through-holes of the medicine guiding plate 12. Through the one-way valve film 30, one-way diversion is achieved, so that the sludge or water inside the mixing tank 1 can only enter the receiving cavity 27 through the one-way valve film 30.

[0069] Circularly distributed through-holes are formed on the outer wall of the push ring 28, and a film 29 is arranged on the side of the push ring 28 away from the control rod 19. The outside of the film 29 is annular, and the film 29 corresponds to the position of the through-holes outside the push ring 28.

[0070] When the push ring 28 moves along with the control rod 19, the push ring 28 and the film 29 can drive the sludge or water inside the receiving cavity 27 to move, creating a negative pressure inside the receiving cavity 27, and the sludge or water inside the mixing tank 1 is sucked into the receiving cavity 27.

[0071] Two one-way bearings with opposite braking directions are arranged on the outside of one end of the threaded piece fixing rod 21. A first sub-gear 22 and a second sub-gear 23 are respectively arranged outside the two one-way bearings at one end of the threaded piece fixing rod 21. The second sub-gear 23 meshes with a first main gear 20. The lower end of the first main gear 20 is connected to a second main gear 24. The second main gear 24 is fixed to the inner bottom of the mixing tank 1. An isolation sleeve 32 is sleeved on the outside of the threaded piece fixing rod 21. The isolation sleeve 32 is arranged outside the first main gear 20 and the second main gear 24.

[0072] The two one-way bearings outside the threaded plate fixing rod 21 function to fix the first secondary gear 22 and the second secondary gear 23. When the threaded plate fixing rod 21 rotates forward or backward around the first main gear 20 and the second main gear 24, when the threaded plate fixing rod 21 rotates forward, the first secondary gear 22 meshes with and drives the second main gear 24. When the threaded plate fixing rod 21 rotates backward, the second secondary gear 23 meshes with and drives the first main gear 20. Whether the second conduit 11 rotates forward or backward, the threaded plate fixing rod 21 inside the second conduit 11 can always drive the conveying threaded plate 15 to rotate in one direction, enabling the conveying threaded plate 15 to convey the sludge.

[0073] A control method for a sludge thickening device, comprising the following steps:

[0074] S1: Add sludge, and introduce the sludge into the chemical agent inlet pipe 2 through the sludge inlet pipe 6;

[0075] S2: Add chemical agent, open the first control valve 4, introduce the chemical agent into the conveying pipe 14 through the chemical agent inlet pipe 2, then the conveying pipe 14 introduces the chemical agent into the rotating seat 25, and through the rotating seat 25 and the control rod 19, introduce the chemical agent into the accommodating cavity 27. The chemical agent inside the accommodating cavity 27 enters the mixing tank 1 through the spray pipe 26, enabling the chemical agent to be quickly mixed into the sludge;

[0076] S3: Stir. Start the motor 5, the motor 5 rotates forward, the motor 5 drives the third conduit 13 to rotate, the third conduit 13 drives the material distribution plate 9 and the first conduit 10 to rotate, then the first conduit 10 drives the material guiding box 16 and the second conduit 11 to rotate. While the second conduit 11 stirs the sludge inside the mixing tank 1, it drives the chemical agent guiding plate 12 to rotate. The chemical agent guiding plate 12 introduces the chemical agent into the mixing tank 1, and the threaded plate fixing rod 21 rotates together. The fixed second main gear 24 drives the threaded plate fixing rod 21 to rotate, and then the threaded plate fixing rod 21 drives the conveying threaded plate 15 to rotate. The conveying threaded plate 15 introduces the sludge near the second conduit 11 into the first conduit 10, and the first conduit 10 introduces the sludge into the material distribution plate 9. Through the material distribution plate 9, the sludge is re-introduced to the uppermost part of the sludge inside the mixing tank 1. After stirring the sludge well, then turn off the motor 5;

[0077] S4: Export the sludge. Start the motor 5, the motor 5 rotates backward, the motor 5 drives the material guiding box 16 and the second conduit 11 to rotate backward through the third conduit 13 and the first conduit 10. At the same time, the second secondary gear 23 cooperates with the first main gear 20, and the second secondary gear 23 drives the threaded plate fixing rod 21 to rotate. At this time, open the second control valve 8, and the sludge inside the mixing tank 1 is exported through the second control valve 8 and the sludge outlet pipe 7.

[0078] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sludge thickening device, comprising a mixing tank (1), characterized in that, it further comprises a driving assembly, and the driving assembly is arranged on the top of the mixing tank (1); a feeding assembly, and the feeding assembly is arranged on the driving assembly; a chemical adding assembly, the chemical adding assembly is rotatably arranged inside the mixing tank (1), and the chemical adding assembly is connected with the driving assembly; the chemical adding assembly includes a first conduit (10), a material distribution plate (9) is arranged at the upper end of the first conduit (10), a material guiding box (16) is arranged at the lower end of the first conduit (10), a plurality of second conduits (11) are arranged around the material guiding box (16), a threaded plate fixing rod (21) is rotatably arranged inside the second conduit (11), a conveying threaded plate (15) is arranged outside the threaded plate fixing rod (21), a medicine guiding plate (12) is arranged above the second conduit (11), uniformly distributed through holes are formed on both sides of the medicine guiding plate (12), spray pipes (26) are arranged inside the through holes on both sides, a receiving cavity (27) is formed inside the medicine guiding plate (12), a through hole is formed at one end of the medicine guiding plate (12) close to the first conduit (10), a control rod (19) is arranged inside the through hole at one end of the medicine guiding plate (12), a pushing ring (28) is arranged at one end of the control rod (19), and the pushing ring (28) is slidably arranged inside the receiving cavity (27), a connecting assembly is connected to the end of the control rod (19) far away from the medicine guiding plate (12), and the connecting assembly is arranged inside the first conduit (10); the driving assembly includes a transmission box (3), a third conduit (13) is rotatably arranged inside the transmission box (3), the third conduit (13) is in transmission connection with a motor (5), and the motor (5) is fixed on the outer wall of the transmission box (3); the feeding assembly includes a sludge inlet pipe (6), a chemical agent inlet pipe (2) and a sludge outlet pipe (7), the sludge inlet pipe (6) is fixed on the outer wall of the mixing tank (1), one end of the chemical agent inlet pipe (2) is connected with a first control valve (4), the first control valve (4) is rotatably connected with the upper end of the third conduit (13), the first control valve (4) is internally communicated with a conveying pipe (14), one end of the sludge outlet pipe (7) is connected with a second control valve (8), the second control valve (8) is rotatably arranged at the bottom of the mixing tank (1), and the second control valve (8) is internally communicated with the material guiding box (16); the inside of the material distribution plate (9) is hollow, and uniformly distributed through holes are formed at the bottom of the material distribution plate (9), and the material distribution plate (9) is internally communicated with the first conduit (10); The transfer assembly includes a rotating seat (25). The interior of the rotating seat (25) is hollow, and the upper end of the rotating seat (25) is connected to the lower end of the delivery pipe (14). Protrusions corresponding to the position of the control rod (19) are provided around the rotating seat (25), and through holes are provided on the protrusions. One end of the control rod (19) is inserted into the through hole of the protrusion. An annular control plate (17) is fixed to the outside of the control rod (19). A spring (18) is connected to one side of the control plate (17), and the other end of the spring (18) is fixed to the inner wall of the first conduit (10). A control block (31) is provided on the inner wall of the first conduit (10), and the outside of the control block (31) is an arc-shaped protrusion.

2. A sludge thickening device according to claim 1, wherein, the interior of the delivery pipe (14) is hollow, and spiral blades are provided on the outside of the delivery pipe (14). The spiral blades on the outside of the delivery pipe (14) are inside the first conduit (10). The upper end of the delivery pipe (14) passes through the control rod (19) and is communicated with one end of the third conduit (13).

3. A sludge thickening device according to claim 1, wherein, circular through holes are provided on both sides of the medicine guiding plate (12), and one-way valve films (30) are provided in the circular through holes on both sides of the medicine guiding plate (12).

4. A sludge thickening device according to claim 1, wherein, through holes distributed in a ring are provided on the outer wall of the pushing ring (28), and a film (29) is provided on the side of the pushing ring (28) away from the control rod (19). The outside of the film (29) is annular, and the film (29) corresponds to the position of the through holes on the outside of the pushing ring (28).

5. A sludge thickening device according to claim 1, wherein, two one-way bearings with opposite braking directions are provided on the outside of one end of the threaded piece fixing rod (21). A first sub-gear (22) and a second sub-gear (23) are respectively provided on the outside of the two one-way bearings at one end of the threaded piece fixing rod (21). The second sub-gear (23) meshes with a first main gear (20). The lower end of the first main gear (20) is connected to a second main gear (24). The second main gear (24) is fixed to the inner bottom of the mixing tank (1). An isolation sleeve (32) is sleeved on the outside of the threaded piece fixing rod (21). The isolation sleeve (32) is provided on the outside of the first main gear (20) and the second main gear (24).

6. A control method for a sludge thickening device, a sludge thickening device according to any one of claims 1-5, wherein, it includes the following steps: S1: Add silt, and introduce the sludge into the medicine inlet pipe (2) through the sludge inlet pipe (6); S2: Add medicine, open the first control valve (4), introduce the medicine into the delivery pipe (14) through the medicine inlet pipe (2), then the delivery pipe (14) introduces the medicine into the rotating seat (25), and the medicine is introduced into the accommodation cavity (27) through the rotating seat (25) and the control rod (19). The medicine inside the accommodation cavity (27) enters the mixing tank (1) through the spray pipe (26); S3: Stirring. Start the motor (5). The motor (5) rotates forward, driving the third conduit (13) to rotate. The third conduit (13) drives the material distribution plate (9) and the first conduit (10) to rotate. Then the first conduit (10) drives the material guiding box (16) and the second conduit (11) to rotate. While the second conduit (11) stirs the sludge inside the mixing box (1), it drives the medicine guiding plate (12) to rotate. The medicine guiding plate (12) introduces the medicine into the mixing box (1), and the threaded plate fixing rod (21) rotates together. The fixed second main gear (24) drives the threaded plate fixing rod (21) to rotate. Then the threaded plate fixing rod (21) drives the conveying threaded plate (15) to rotate. The conveying threaded plate (15) introduces the sludge near the second conduit (11) into the first conduit (10). The first conduit (10) introduces the sludge into the material distribution plate (9). The material distribution plate (9) re-introduces the sludge to the top of the sludge inside the mixing box (1). After stirring the sludge well, then turn off the motor (5); S4: Exporting the sludge. Start the motor (5). The motor (5) rotates reversely. The motor (5) drives the material guiding box (16) and the second conduit (11) to rotate reversely through the third conduit (13) and the first conduit (10). At the same time, the second auxiliary gear (23) cooperates with the first main gear (20), and the second auxiliary gear (23) drives the threaded plate fixing rod (21) to rotate. At this time, open the second control valve (8), and the sludge inside the mixing box (1) is exported through the second control valve (8) and the sludge outlet pipe (7).

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