Wastewater treatment equipment for broussonetia papyrifera processing

Abstract

The invention discloses wastewater treatment equipment for broussonetia papyrifera processing, and relates to the technical field of paper pulp wastewater treatment.The wastewater treatment equipment comprises a treatment tank, a feeding pipe, a discharging pipe and a stirring mechanism, the stirring mechanism comprises a stirring pipe column, stirring blades and a rotation driving motor, and the equipment further comprises a cold air conveying mechanism and a reciprocating liquid pushing mechanism; through the arrangement of the cold air conveying mechanism, in the process that the stirring pipe column runs and stirring blades continuously stir waste water, a communicating pipe in the cold air conveying mechanism continuously inputs cold air into a transmission cylinder ring, so that the cold air is introduced into the stirring pipe column and is discharged outwards through an exhaust pipe, and the stirring pipe column is refrigerated; in the process, the power part drives the transmission cylinder ring to rotate at regular time, so that the flow regulation and control part gradually increases the cold air introduction amount in the stirring pipe column, the stirring pipe column is gradually refrigerated while the temperature of the wastewater is gradually increased, the temperature of the wastewater is kept stable, and the situation that the water temperature is continuously increased, and adverse effects are caused to reactants is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pulp wastewater treatment, and in particular to wastewater treatment equipment for paper mulberry paper processing. Background Art

[0002] Wastewater generated during the production of mulberry paper can be divided into two types: sulfate pulp wastewater and sulfite pulp wastewater. Dark brown wastewater is discharged during pulp washing, called black liquor, which is very polluting to the environment. Reactants are often added during wastewater filtration to fuse harmful components in the wastewater with the reactants and then precipitate to achieve wastewater discharge treatment;

[0003] In the prior art, after the reactant is added, a stirrer is often used to fully stir the wastewater so that the wastewater and the reactant are fully mixed and reacted;

[0004] However, the stirring reaction time of pulp wastewater is usually half an hour to one hour. Under long-term high-speed stirring, the mechanical energy of the wastewater is continuously converted into internal energy, and the water temperature continues to rise. As a result, the reactant is over-decomposed under the condition of continuous temperature increase, which leads to the deterioration of its treatment effect on the wastewater. Summary of the invention

[0005] In order to solve the above technical problems, a wastewater treatment equipment for mulberry paper processing is provided, which solves the problem in the prior art that under long-term high-speed stirring, the mechanical energy of pulp wastewater is continuously converted into internal energy, the water temperature continues to rise, and the reactant is excessively decomposed under the condition of continuous temperature increase, which leads to the deterioration of the wastewater treatment effect.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a mulberry paper processing wastewater treatment equipment, comprising a treatment tank, a feed pipe arranged at the top of the treatment tank, a discharge pipe arranged at the bottom of the treatment tank, and a stirring mechanism arranged in the treatment tank for fully mixing the wastewater and the reactant;

[0007] The stirring mechanism includes a stirring column vertically arranged in the treatment tank, a plurality of stirring blades fixed around the stirring column body, and a driving motor installed at the bottom of the treatment tank through a bracket. The bottom end of the stirring column rotates to pass through the treatment tank and is connected to the output shaft of the driving motor by a belt. It also includes a cold air conveying mechanism for reducing the influence of water temperature on the reactants and a reciprocating liquid pushing mechanism for uniformly cooling the wastewater.

[0008] The cold air delivery mechanism comprises a mounting base plate mounted on the top of the treatment tank through a bracket, a fixed top plate arranged above the mounting base plate, and a transmission cylinder ring rotatably arranged between the fixed top plate and the mounting base plate, a connecting pipe is fixedly penetrated in the inner wall of the fixed top plate, the top end of the stirring pipe column rotates to pass through the treatment tank and rotates to pass through the mounting base plate, the stirring pipe column and the connecting pipe are symmetrically distributed on the left and right, a flow control part is arranged inside the transmission cylinder ring, a power part matched with the flow control part is arranged outside the transmission cylinder ring, and the bottom end of the stirring pipe column is rotatably connected to an exhaust pipe;

[0009] The reciprocating liquid pushing mechanism includes two liquid pushing plates symmetrically arranged in an arc shape on both side surfaces of the stirring blade, a driving groove is horizontally penetrated in the inner wall of the stirring blade, and a push-pull part for providing sliding force for the liquid pushing plate is built into the driving groove, and an intermittent rotation supply part cooperating with the push-pull part is built into the stirring column.

[0010] Preferably, the flow regulating part includes a column uprightly fixed between the center of the fixed top plate and the center of the mounting bottom plate, and a shielding cover plate fixedly connected to the inner wall of the transmission cylinder ring is rotatably sleeved on the column body of the column, and a ventilation groove intersecting with the stirring column port is penetrated through the inner wall of the shielding cover plate.

[0011] Preferably, the power unit includes a timing motor installed on the top surface of the processing tank, a key rod fixed on the output shaft of the timing motor, and a key sleeve slidably arranged on the key rod, a driving gear is fastened and sleeved on the outer wall of the key sleeve, and a transmission gear plate meshing with the driving gear is fastened and sleeved on the outer wall of the transmission cylinder ring.

[0012] Preferably, the push-pull part includes a movable screw rod which is laterally rotatably arranged between the inner walls on both sides of the driving groove and a nut seat which is threadedly connected to the rod body of the movable screw rod. The outer wall of the nut seat is slidably connected to the inner wall of the driving groove, and a push-pull frame is fixedly connected between the nut seat and the liquid pushing plate.

[0013] Preferably, the intermittent rotation supply part includes two connecting frames fixed up and down in the inner wall of the stirring tube column and an active rod rotatably arranged between the two connecting frames, and a driven column is fixed to one end of the movable screw rod, and the end of the driven column is rotatably inserted into the stirring tube column and connected to the rod body of the active rod through a bevel gear transmission.

[0014] Preferably, the intermittent rotation supply part also includes a transmission rod laterally arranged above the inner side of the processing tank and an incomplete bevel gear fixed on the inner wall of the top end of the processing tank, the stirring column is located on the inner side of the incomplete bevel gear, one end of the transmission rod rotates to penetrate into the stirring column and is connected to the active rod through the bevel gear, and the other end of the transmission rod is fastened with a control gear meshing with the incomplete bevel gear.

[0015] Preferably, the rod body of the active rod is sequentially sleeved with a torsion spring and a fixed sleeve, the fixed sleeve is fixedly connected to the inner wall of the stirring column through a bracket, and the two ends of the torsion spring are respectively fixedly connected to the rod body of the active rod and the inner wall of the fixed sleeve.

[0016] Preferably, a movable ring plate is rotatably sleeved on the outer wall of the key sleeve, a driving screw rotatably connected to the top surface of the processing tank is threaded through one side of the movable ring plate, and a telescopic rod is fixed between the other side of the movable ring plate and the top surface of the processing tank.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) By setting up the cold air delivery mechanism, when the stirring column is running and the stirring blades continuously stir the wastewater, the connecting pipe in the cold air delivery mechanism continuously inputs cold air into the transmission cylinder ring, so that the cold air passes into the stirring column and is discharged outwardly from the exhaust pipe, thereby cooling the stirring column. During this process, the power unit drives the transmission cylinder ring at a fixed time, so that the flow control unit gradually increases the amount of cold air entering the stirring column, so that the wastewater is gradually heated up while the stirring column is gradually cooled, so that the wastewater maintains a stable temperature to prevent the continuous increase in water temperature from causing adverse effects on the reactants.

[0019] (2) Through the setting of the reciprocating liquid pushing mechanism, during the continuous rotation of the stirring column, the intermittent rotation part cooperates with the push-pull part, causing the liquid pushing plate to slide back and forth along the side of the stirring blade, thereby reciprocatingly pushing the pre-stressed wastewater in the middle of the inner side of the treatment tank to flow to the inner periphery of the treatment tank, thereby improving the cooling rate of the wastewater inside and outside the treatment tank and avoiding uneven heating and cooling of the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the stirring column of the present invention;

[0023] Figure 4 For the present invention Figure 3Schematic diagram of the structure at A in the middle;

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the structure at B

[0025] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at point C in the middle.

[0026] The numbers in the figure are:

[0027] 1. Treatment tank; 2. Stirring column; 3. Stirring blade; 4. Driving motor; 5. Mounting bottom plate; 6. Fixed top plate; 7. Transmission cylinder ring; 8. Connecting pipe; 9. Shielding cover; 10. Ventilation slot; 11. Transmission gear plate; 12. Timing motor; 13. Key sleeve; 14. Driving gear; 15. Active ring plate; 16. Driving screw; 17. Telescopic rod; 18. Pushing plate; 19. Push-pull frame; 20. Active screw; 21. Nut seat; 22. Connecting frame; 23. Active rod; 24. Driven column; 25. Fixed cylinder sleeve; 26. Torsion spring; 27. Transmission rod; 28. Incomplete bevel gear; 29. ​​Control gear; 30. Exhaust pipe. DETAILED DESCRIPTION

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0029] Reference Figure 1-6 As shown, a mulberry paper processing wastewater treatment device comprises a treatment tank 1, a feed pipe arranged at the top of the treatment tank 1, a discharge pipe arranged at the bottom of the treatment tank 1, and a stirring mechanism arranged in the treatment tank 1 for fully mixing the wastewater with the reactant, and valves are arranged in the discharge pipe and the feed pipe;

[0030] The stirring mechanism includes a stirring column 2 vertically arranged in the treatment tank 1, a plurality of stirring blades 3 surrounding and fixed on the tube body of the stirring column 2, and a driving motor 4 installed at the bottom end of the treatment tank 1 through a bracket. The bottom end of the stirring column 2 rotates to pass through the treatment tank 1 and is connected to the output shaft of the driving motor 4 by a belt.

[0031] When in use, the built-in valve of the feed pipe is opened in advance to add pulp wastewater and reactants into the inner side of the treatment tank 1 in sequence, and then the driving motor 4 is turned on. The output shaft of the driving motor 4 is driven by a belt to continuously drive the stirring column 2, and the stirring blades 3 are used to fully stir the wastewater in the treatment tank 1, so that the wastewater and the reactants are fully mixed, thereby achieving the treatment effect of the wastewater;

[0032] After the wastewater treatment is completed, open the valve built into the discharge pipe so that the treated wastewater can be discharged from the discharge pipe for later recycling.

[0033] However, the stirring reaction time of pulp wastewater is usually half an hour to one hour. Under long-term high-speed stirring, the mechanical energy of the wastewater is continuously converted into internal energy, and the water temperature continues to rise. As a result, the reactant is over-decomposed under the condition of continuous temperature increase, which leads to the deterioration of its treatment effect on wastewater.

[0034] For this purpose, refer to Figure 1-4 As shown, it is worth noting that it also includes a cold air delivery mechanism for reducing the effect of water temperature on the reactants;

[0035] The cold air delivery mechanism includes a mounting base plate 5 mounted on the top of the treatment tank 1 through a bracket, a fixed top plate 6 arranged above the mounting base plate 5, and a transmission cylinder ring 7 rotatably arranged between the fixed top plate 6 and the mounting base plate 5. A connecting pipe 8 is fixedly penetrated in the inner wall of the fixed top plate 6, and the connecting pipe 8 is externally connected to a refrigerator. The top end of the stirring column 2 rotates to pass through the treatment tank 1 and rotates to pass through the mounting base plate 5. The stirring column 2 and the connecting pipe 8 are symmetrically distributed on the left and right. A flow control part is arranged inside the transmission cylinder ring 7, and a power part matched with the flow control part is arranged outside the transmission cylinder ring 7. The bottom end of the stirring column 2 is rotatably connected to an exhaust pipe 30.

[0036] By setting up the cold air delivery mechanism, when the stirring column 2 is running and the stirring blades 3 continue to stir the wastewater, the connecting pipe 8 in the cold air delivery mechanism continuously inputs cold air into the transmission cylinder ring 7, so that the cold air passes into the stirring column 2 and is discharged outwardly from the exhaust pipe 30, thereby cooling the stirring column 2. During this process, the power unit drives the transmission cylinder ring 7 at a regular interval, so that the flow control unit gradually increases the amount of cold air introduced into the stirring column 2, so that while the wastewater is gradually heated up, the stirring column 2 is also gradually cooled, so that the wastewater maintains a stable temperature to prevent the continuous increase in water temperature from causing adverse effects on the reactants.

[0037] Further, refer to Figure 4 and Figure 6 As shown, it is worth noting that the flow control part includes a column fixed between the center of the fixed top plate 6 and the center of the installation bottom plate 5, and a shielding cover plate 9 fixedly connected to the inner wall of the transmission cylinder ring 7 is rotatably sleeved on the column body of the column, and a ventilation slot 10 intersecting with the port of the stirring column 2 is penetrated and opened in the inner wall of the shielding cover plate 9;

[0038] When the power unit drives the transmission cylinder ring 7 at a fixed time, the transmission cylinder ring 7 can simultaneously drive the shielding cover plate 9 to operate during the rotation process, so that the ventilation groove 10 and the end of the stirring column 2 are gradually misaligned, and the intersection between the two is gradually expanded to continuously increase the amount of cold air entering the inside of the stirring column 2.

[0039] Further, refer to Figure 6 As shown, it is worth noting that the power unit includes a timing motor 12 installed on the top surface of the processing tank 1, a key rod fixed on the output shaft of the timing motor 12, and a key sleeve 13 slidably arranged on the key rod, a driving gear 14 is tightly sleeved on the outer wall of the key sleeve 13, a transmission toothed disc 11 meshing with the driving gear 14 is tightly sleeved on the outer wall of the transmission cylinder ring 7, and a PLC controller (not shown in the figure) electrically connected to the timing motor 12 is arranged on the processing tank 1;

[0040] The rotation frequency of the timing motor 12 is set by PLC control, so that the output shaft of the timing motor 12 drives the key rod to rotate regularly, so that the driving gear 14 is regularly engaged with the transmission gear plate 11, so that the transmission cylinder ring 7 rotates intermittently.

[0041] Further, refer to Figure 6 As shown, it is worth noting that the outer wall of the key sleeve 13 is rotatably sleeved with a movable ring plate 15, one side of the movable ring plate 15 is threadedly penetrated with a driving screw 16 rotatably connected to the top surface of the processing tank 1, and a telescopic rod 17 is fixed between the other side of the movable ring plate 15 and the top surface of the processing tank 1;

[0042] Through the arrangement of the movable ring plate 15, the driving screw 16 and the telescopic rod 17, after the wastewater is stirred, the knob drives the screw 16, so that the movable ring plate 15 slides down along the rod body of the driving screw 16 carrying the key sleeve 13 in the threaded structure, so as to separate the driving gear 14 from the transmission gear plate 11, so as to facilitate manual rotation of the transmission cylinder ring 7 to reset it, and restore the staggered port between the shielding cover plate 9 and the port of the stirring column 2 to its original state, so as to facilitate secondary use.

[0043] In the above-mentioned embodiment, although the wastewater temperature is kept stable by gradually cooling the stirring column 2 to prevent the reactants from overreacting, the stirring column 2 is located in the center of the inner cavity of the treatment tank 1, which often causes the wastewater located in the middle of the inner side of the treatment tank 1 to be cooled in advance, while the wastewater located in the outer periphery of the treatment tank 1 is cooled less effectively, so that the wastewater is unevenly cooled and heated, affecting the use effect.

[0044] For this purpose, refer to Figure 3-5 As shown, it is worth noting that it also includes a reciprocating liquid pushing mechanism for evenly cooling waste water;

[0045] The reciprocating liquid pushing mechanism comprises two liquid pushing plates 18 symmetrically arranged on both sides of the stirring blade 3 in an arc shape, a driving groove is transversely opened in the inner wall of the stirring blade 3, a push-pull part for providing sliding force for the liquid pushing plate 18 is built in the driving groove, and an intermittent rotation supply part matched with the push-pull part is built in the stirring column 2;

[0046] Through the setting of the reciprocating liquid pushing mechanism, during the continuous rotation of the stirring column 2, the intermittent rotation part cooperates with the push-pull part, and the liquid pushing plate 18 slides back and forth along the side of the stirring blade 3, thereby reciprocatingly pushing the pre-stressed wastewater in the middle of the inner side of the treatment tank 1 to flow to the inner periphery of the treatment tank 1, thereby improving the cooling rate of the wastewater inside and outside the treatment tank 1 and avoiding uneven heating and cooling of the wastewater.

[0047] Further, refer to Figure 5 As shown, it is worth noting that the push-pull portion includes a movable screw rod 20 that is laterally rotatably arranged between the inner walls of both sides of the driving groove and a nut seat 21 that is threadedly connected to the rod body of the movable screw rod 20, the outer wall of the nut seat 21 is slidably connected to the inner wall of the driving groove, and a push-pull frame 19 is fixedly connected between the nut seat 21 and the liquid pushing plate 18;

[0048] The intermittent rotation supply part includes two connecting frames 22 fixed in the inner wall of the stirring column 2 and an active rod 23 rotatably arranged between the two connecting frames 22. A driven column 24 is fixed at one end of the movable screw rod 20. The end of the driven column 24 rotates and penetrates into the stirring column 2 and is connected to the rod body of the active rod 23 through a bevel gear transmission.

[0049] The intermittent rotation supply unit also includes a transmission rod 27 disposed laterally on the upper inner side of the treatment tank 1 and an incomplete bevel gear 28 fixed on the inner wall of the top end of the treatment tank 1. The stirring column 2 is located on the inner side of the incomplete bevel gear 28. One end of the transmission rod 27 rotates to penetrate into the stirring column 2 and is connected to the active rod 23 through the bevel gear. The other end of the transmission rod 27 is tightly sleeved with a control gear 29 meshing with the incomplete bevel gear 28.

[0050] The rod body of the active rod 23 is sleeved with a torsion spring 26 and a fixed sleeve 25 in sequence. The fixed sleeve 25 is fixedly connected to the inner wall of the stirring column 2 through a bracket. The two ends of the torsion spring 26 are respectively fixedly connected to the rod body of the active rod 23 and the inner wall of the fixed sleeve 25.

[0051] In the process of stirring the liquid by the stirring column 2 carrying the stirring blade 3, the stirring column 2 acts on the transmission rod 27 to rotate synchronously, so that the control gear 29 intermittently meshes with the incomplete bevel gear 28. During this period, when the control gear 29 meshes with the incomplete bevel gear 28, the transmission rod 27 is forced to rotate and the bevel gear drives the active rod 23, so that the active rod 23 is driven by the bevel gear to the driven column 24 and the active screw 20 as a whole, so that the nut seat 21 slides to one side inside the driving groove under the threaded connection;

[0052] During this time, when the active rod 23 rotates, the active rod 23 can twist the torsion spring 26 on its rod body to deform, and then when the control gear 29 moves to no longer mesh with the incomplete bevel gear 28, the active rod 23 is no longer under force and quickly rotates under the elastic force of the torsion spring 26. At the same time, the bevel gear reverses the driven column 24 and the active screw 20, so that the nut seat 21 slides in the opposite direction in the driving groove.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A mulberry paper processing wastewater treatment device, comprising a treatment tank (1), a feed pipe arranged at the top of the treatment tank (1), a discharge pipe arranged at the bottom of the treatment tank (1), and a stirring mechanism arranged in the treatment tank (1) for fully mixing wastewater and reactants; The stirring mechanism comprises a stirring column (2) vertically arranged in the processing tank (1), a plurality of stirring blades (3) surrounding and fixed on the tube body of the stirring column (2), and a driving motor (4) installed at the bottom end of the processing tank (1) through a bracket. The bottom end of the stirring column (2) rotates to pass through the processing tank (1) and is connected to the output shaft of the driving motor (4) by a belt, characterized in that: It also includes a cold air delivery mechanism for reducing the effect of water temperature on the reactants and a reciprocating liquid pushing mechanism for evenly cooling the waste water; The cold air delivery mechanism comprises a mounting base plate (5) mounted on the top of the treatment tank (1) through a bracket, a fixed top plate (6) arranged above the mounting base plate (5), and a transmission cylinder ring (7) rotatably arranged between the fixed top plate (6) and the mounting base plate (5); a connecting pipe (8) is fixedly penetrated in the inner wall of the fixed top plate (6); the top end of the stirring column (2) rotates to pass through the treatment tank (1) and rotates to pass through the mounting base plate (5); the stirring column (2) and the connecting pipe (8) are symmetrically distributed on the left and right; a flow control part is arranged inside the transmission cylinder ring (7); a power part cooperating with the flow control part is arranged outside the transmission cylinder ring (7); and the bottom end of the stirring column (2) is rotatably connected to an exhaust pipe (30); The reciprocating liquid pushing mechanism comprises two liquid pushing plates (18) which are symmetrically arranged in an arc shape on the two side surfaces of the stirring blade (3), a driving groove is transversely penetrated in the inner wall of the stirring blade (3), and a push-pull part for providing sliding force for the liquid pushing plate (18) is built in the driving groove, and an intermittent rotation supply part cooperating with the push-pull part is built in the stirring column (2).

2. The mulberry paper processing wastewater treatment equipment according to claim 1, characterized in that: The flow control unit comprises a column which is vertically fixed between the center of the fixed top plate (6) and the center of the mounting bottom plate (5); a shielding cover plate (9) which is rotatably sleeved on the column body and is fixedly connected to the inner wall of the transmission cylinder ring (7); and a ventilation slot (10) which is staggered with the port of the stirring column (2) is penetrated through the inner wall of the shielding cover plate (9).

3. The mulberry paper processing wastewater treatment equipment according to claim 2, characterized in that: The power unit comprises a timing motor (12) mounted on the top surface of the processing tank (1), a key rod fixed on the output shaft of the timing motor (12), and a key sleeve (13) slidably arranged on the key rod, a driving gear (14) being tightly sleeved on the outer wall of the key sleeve (13), and a driving gear disc (11) meshing with the driving gear (14) being tightly sleeved on the outer wall of the transmission cylinder ring (7).

4. The mulberry paper processing wastewater treatment equipment according to claim 1, characterized in that: The push-pull portion comprises a movable screw (20) which is laterally rotatably arranged between the inner walls of both sides of the driving groove and a nut seat (21) which is threadedly connected to the rod body of the movable screw (20); the outer wall of the nut seat (21) is slidably connected to the inner wall of the driving groove, and a push-pull frame (19) is fixedly connected between the nut seat (21) and the liquid pushing plate (18).

5. The mulberry paper processing wastewater treatment equipment according to claim 4, characterized in that: The intermittent rotation supply part comprises two connecting frames (22) fixed in the inner wall of the stirring column (2) up and down and an active rod (23) rotatably arranged between the two connecting frames (22); a driven column (24) is fixed to one end of the movable screw rod (20); the distal end of the driven column (24) is rotatably inserted into the stirring column (2) and is connected to the rod body of the active rod (23) through a bevel gear transmission.

6. The mulberry paper processing wastewater treatment equipment according to claim 5, characterized in that: The intermittent rotation supply unit further comprises a transmission rod (27) arranged transversely on the upper inner side of the processing tank (1) and an incomplete bevel gear (28) fixed on the inner wall of the top end of the processing tank (1); the stirring column (2) is located on the inner side of the incomplete bevel gear (28); one end of the transmission rod (27) is rotated to penetrate into the stirring column (2) and is connected to the active rod (23) through the bevel gear; the other end of the transmission rod (27) is tightly sleeved with a control gear (29) meshing with the incomplete bevel gear (28).

7. The mulberry paper processing wastewater treatment equipment according to claim 6, characterized in that: The rod body of the active rod (23) is sequentially sleeved with a torsion spring (26) and a fixed sleeve (25); the fixed sleeve (25) is fixedly connected to the inner wall of the stirring column (2) via a bracket; and the two ends of the torsion spring (26) are respectively fixedly connected to the rod body of the active rod (23) and the inner wall of the fixed sleeve (25).

8. The mulberry paper processing wastewater treatment equipment according to claim 3, characterized in that: The outer wall of the key sleeve (13) is rotatably sleeved with a movable ring plate (15), one side of the movable ring plate (15) is threadedly penetrated by a driving screw (16) rotatably connected to the top surface of the processing tank (1), and a telescopic rod (17) is fixed between the other side of the movable ring plate (15) and the top surface of the processing tank (1).

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