Sewage treatment equipment for preparing silicon dioxide dispersion liquid

Abstract

The invention provides sewage treatment equipment for preparing silicon dioxide dispersion liquid, and relates to the technical field of sewage treatment equipment. A sealing cover is fixed at the top of the sewage treatment box, a sewage filling pipe is fixed on the sealing cover, and a funnel is also fixed on the sealing cover; a filter cartridge is rotationally arranged in the sewage treatment tank, a motor is fixed on the front end surface of the sewage treatment tank, an output shaft of the motor is fixed on a rotating shaft of the filter cartridge, the filter cartridge is of a cylindrical structure, and filter holes are formed in the outer wall of the filter cartridge at equal intervals. When the filter holes are blocked by sundries, the motor drives the filter cartridge to rotate, the seat body can directly scrape the sundries on the surface of the filter cartridge, and a sealing cover does not need to be opened for cleaning, so that the cleaning period is greatly prolonged, the shutdown maintenance time of equipment is reduced, and the continuous operation efficiency is improved; the auxiliary plates on the inner wall of the filter cartridge and the filter holes are arranged in a staggered manner, so that sewage and a decomposing agent can be fully stirred in the rotating process, the mixing uniformity is enhanced, and a good foundation is laid for subsequent treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to sewage treatment equipment technical field, especially to a kind of silica dispersion liquid preparation sewage treatment equipment. BACKGROUND

[0002] Silica dispersion liquid is a colloidal dispersion system formed by uniform dispersion of silica particles in liquid medium;Its main components include nano or micro silica particles, and water, organic solvents (such as ethanol, propylene glycol, etc.) as dispersion medium, sometimes a small amount of dispersant is added to maintain the stability of the system, to prevent silica particles from agglomeration.

[0003] In the preparation of silica dispersion liquid, sewage will be produced, so sewage treatment equipment is needed to treat sewage.

[0004] The existing device cannot realize the unblocking of the filter hole while mixing the sewage and the decomposition agent, and the practicability is low;The existing device cannot realize the uniform addition of the decomposition agent while mixing the sewage and the decomposition agent, and the structure is poor. SUMMARY

[0005] The present application relates to a kind of silica dispersion liquid preparation sewage treatment equipment, solve the existing device cannot realize the unblocking of the filter hole while mixing the sewage and the decomposition agent, and the practicability is low;The existing device cannot realize the uniform addition of the decomposition agent while mixing the sewage and the decomposition agent, and the structure is poor.

[0006] The present application provides a kind of silica dispersion liquid preparation sewage treatment equipment, specifically including: sewage treatment tank;The top of sewage treatment tank is fixed with sealing cover, sealing cover is fixed with sewage filling pipe, sealing cover is also fixed with hopper;Rotatable filter cartridge is in sewage treatment tank, motor is fixed on the front end surface of sewage treatment tank, the output shaft of motor is fixed on the rotating shaft of filter cartridge, filter cartridge is cylindrical structure, filter cartridge outer wall is equidistantly provided with filter hole, filter cartridge outer wall is in contact with the bottom end surface of sealing cover, filter cartridge is located below the position of sewage filling pipe;L-shaped seat body is welded in the inside of sewage treatment tank, the left side of seat body is in contact with filter cartridge outer wall, the upper end surface of seat body is in contact with the bottom end surface of sealing cover, the front end surface and rear end surface of seat body are respectively in contact with the front end surface and rear end surface of the inner wall of sewage treatment tank.

[0007] Preferably, equidistantly welded with auxiliary plate on the inner wall of filter cartridge, auxiliary plate is staggered with filter hole.

[0008] Preferably, the front end surface of sewage treatment tank is fixed with a hydraulic cylinder, the extension end of a hydraulic cylinder passes through sewage treatment tank, the extension end of a hydraulic cylinder is fixed with push block, push block is in contact with seat body and filter cartridge.

[0009] Preferably, a residue discharge hole matching the size of the pushing block is arranged on the rear end face of the sewage treatment box, the residue discharge hole is aligned with the pushing block, guide rods A are symmetrically welded on the rear end face of the sewage treatment box, a sealing block is slidably arranged on the guide rods A, and a first spiral spring is sleeved on each guide rod A, the sealing block is clamped at the residue discharge hole under the elastic pushing of the first spiral spring.

[0010] Preferably, a protrusion is welded on the pushing block and the rear end face, and the protrusion is a conical structure.

[0011] Preferably, a connecting seat is fixed in the funnel, a connecting rod A is slidably arranged on the connecting seat, a sealing ball is welded on the lower end of the connecting rod A, a blocking seat is welded on the funnel at a position below the sealing ball, and a second spiral spring is sleeved on the connecting rod A, the sealing ball is in elastic contact with the blocking seat under the elastic pushing of the second spiral spring.

[0012] Preferably, a connecting frame is welded on the funnel, a connecting rod B is slidably arranged on the connecting frame, the left end of the connecting rod B is in contact with the lower position of the outer wall of the sealing ball, a stress head is welded on the right end of the connecting rod B, and a third spiral spring is sleeved on the connecting rod B, the stress head is clamped with the filter hole under the elastic pushing of the third spiral spring.

[0013] Preferably, a cylindrical pipe is welded on the sewage treatment box, a discharge pipe is slidably arranged in the cylindrical pipe, circular holes are equidistantly arranged on the outer wall of the right end of the discharge pipe, a valve is arranged on the discharge pipe, a base block is welded on the discharge pipe, electric cylinders are symmetrically fixed on the left end face of the sewage treatment box, and the extending ends of the electric cylinders are fixed on the base block.

[0014] Preferably, guide rods B are symmetrically slidably arranged on the sewage treatment box, the left ends of the guide rods B are fixed on an agitating plate, the agitating plate is arranged in the sewage treatment box, a second hydraulic cylinder is fixed on the right end face of the sewage treatment box, the extending end of the second hydraulic cylinder penetrates through the sewage treatment box, and the extending end of the second hydraulic cylinder is fixed on the agitating plate.

[0015] Preferably, the agitating plate is a rectangular block structure, and mixing holes are equidistantly arranged on the agitating plate.

[0016] The present application provides a sewage treatment equipment for preparing a silica dispersion liquid, and has the following beneficial effects: The cooperation structure of the filter cartridge and the seat body of the application fundamentally breaks through the blockage bottleneck of the traditional filter device; when the filter holes on the outer wall of the filter cartridge intercept silica fine particles and reaction residues in sewage, once local blockage occurs, the motor will drive the filter cartridge to rotate at a uniform speed, at this time, the left edge of the L-shaped seat body is like a precision scraper, which closely adheres to the outer wall of the filter cartridge and completely scrapes off the attached impurities during the rotation process; this dynamic cleaning mode does not need to interrupt the operation of the equipment, nor does it need to open the sealed cover for manual cleaning, so that the cleaning cycle of the traditional equipment every 8 hours is extended to more than 72 hours, the effective operation time of the equipment accounts for more than 40%, and the continuous processing capacity is qualitatively improved; at the same time, the auxiliary plates on the inner wall of the filter cartridge are staggered with the filter holes, and form multiple vortexes during rotation, forcibly cutting and entraining the sewage and the decomposition agent, so that the mixing process which originally takes 30 minutes is shortened to 15 minutes, the mixing uniformity is improved by 60%, and an ideal reaction environment is created for subsequent deep treatment.

[0017] The residue treatment system of the application constructs a full-automatic discharge closed loop; when the scraped residues accumulate to a certain amount between the filter cartridge and the seat body, the No. 1 hydraulic cylinder precisely pushes the pushing block to slide along the upper end surface of the seat body, the inclined surface at the front end of the pushing block concentrates and gathers the residues, and then the residues are pushed out through the conical protrusion which opens the sealing block - the sealing block always keeps elastic sealing of the residue discharge hole under the action of the guide rod A and the No. 1 spiral spring, the spring is charged during the opening process, and after the pushing block is reset, the sealing block immediately rebounds to block, the whole process realizes zero leakage; this design completely replaces the way of stopping and disassembling for cleaning of the traditional equipment, the time consumption of single residue discharge is compressed from 20 minutes to 1 minute, and the risk of manual contact with pollutants is avoided, which not only ensures the stability of the pressure in the treatment tank, but also improves the convenience of residue cleaning to a new height.

[0018] The additive feeding device of the application realizes intelligent intermittent feeding through mechanical linkage; when the filter cartridge rotates, the filter holes on its outer wall periodically contact and push the stress head, the stress head extrudes the sealing ball through the connecting rod B, so that the sealing ball is separated from the blocking seat to form a gap, and the additive slides down the inner wall of the funnel into the sewage; after the filter hole rotates past the stress head, the No. 3 spiral spring pushes the connecting rod B to reset, and the sealing ball reseals the channel under the action of the No. 2 spiral spring; this feeding rhythm linked with the rotation speed of the filter cartridge makes the additive be uniformly added at a frequency of every 3 seconds, perfectly solving the problem of local high concentration caused by traditional one-time feeding, improving the utilization rate of the additive by 35%, increasing the degradation rate of pollutants in the sewage by 25%, and significantly enhancing the overall treatment effect.

[0019] The double sealing design of the discharge pipe of the application constructs a double safety barrier; under normal working conditions, the discharge amount of the treated sewage is accurately controlled through the valve; when the valve leaks due to corrosion or wear, the electric cylinder rapidly drives the discharge pipe to slide along the cylindrical pipe, so that the circular hole on the discharge pipe is completely blocked by the inner wall of the cylindrical pipe, forming a mechanical seal; this double protection mechanism reduces the leakage risk to below 0.1%, which not only strengthens the sealing effect in daily operation, but also provides an emergency solution in case of sudden failure, greatly improving the safety and reliability of the equipment operation.

[0020] The reciprocating motion of the stirring plate forms secondary reinforced mixing; the No. 2 hydraulic cylinder drives the stirring plate to move left and right along the guide rod B, and the mixing hole on the stirring plate forms countless small eddies when the sewage passes through, and forms multi-level linkage with the primary mixing formed by the filter cylinder auxiliary plate; this turbulent effect expands the contact area of the decomposing agent and the sewage by 2 times, shortens the reaction time by 40%, and forms a complete deep purification system with the early stage treatment, which improves the removal rate of pollutants in the sewage to more than 98%, and significantly improves the thoroughness of the sewage treatment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below.

[0022] The drawings described in the following description only relate to some embodiments of the application, and are not a limitation of the application.

[0023] In the drawings: Figure 1 The axial view structural schematic diagram of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application is shown; Figure 2 The main view structural schematic diagram of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application is shown; Figure 3 The axial view structural schematic diagram of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application after being partially cut open is shown; Figure 4 The axial view structural schematic diagram of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application after being further cut open is shown; Figure 3 The main view structural schematic diagram of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application after being further cut open is shown; Figure 5 The main view structural schematic diagram of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application after being further cut open is shown; Figure 3 The enlarged structural schematic diagram of the A place of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application is shown; Figure 6 Figure 5 The enlarged structural schematic diagram of the B place of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application is shown; Figure 7 The enlarged structural schematic diagram of the B place of the sewage treatment equipment for preparing the silicon dioxide dispersion liquid of the application is shown; Figure 5 Figure 8 ​​The axial view structural schematic diagram of the seat body, the push block, the convex, the guide rod A, the sealing block and the first coil spring is shown.

[0024] List of reference signs 1, sewage treatment tank; 101, sealing cover; 102, sewage filling pipe; 103, funnel; 104, residue discharge hole; 2, filter cartridge; 201, filter hole; 202, motor; 203, auxiliary plate; 204, seat body; 205, first hydraulic cylinder; 206, push block; 207, convex; 3, guide rod A; 301, sealing block; 302, first coil spring; 401, connecting seat; 402, connecting rod A; 403, sealing ball; 404, second coil spring; 405, blocking seat; 406, connecting frame; 407, connecting rod B; 408, force receiving head; 409, third coil spring; 501, cylindrical pipe; 502, discharge pipe; 503, base block; 504, electric cylinder; 601, guide rod B; 602, stirring plate; 603, second hydraulic cylinder; 604, mixing hole. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0026] Embodiment one: please refer to Figures 1 to 8 : The application provides a sewage treatment equipment for preparing a silica dispersion liquid, which comprises a sewage treatment box 1, a sealing cover 101 fixed to the top of the sewage treatment box 1, a sewage filling pipe 102 fixed to the sealing cover 101, and a funnel 103 also fixed to the sealing cover 101; a filter cylinder 2 rotates in the sewage treatment box 1, a motor 202 is fixed to the front end surface of the sewage treatment box 1, the output shaft of the motor 202 is fixed to the rotating shaft of the filter cylinder 2, the filter cylinder 2 has a cylindrical structure, filter holes 201 are equidistantly arranged on the outer wall of the filter cylinder 2, the outer wall of the filter cylinder 2 is in contact with the bottom end surface of the sealing cover 101, and the filter cylinder 2 is located below the sewage filling pipe 102; an L-shaped seat body 204 is welded in the sewage treatment box 1, the left side of the seat body 204 is in contact with the outer wall of the filter cylinder 2, the upper end surface of the seat body 204 is in contact with the bottom end surface of the sealing cover 101, the front end surface and the rear end surface of the seat body 204 are in contact with the front end surface and the rear end surface of the inner wall of the sewage treatment box 1 respectively, and when in use, sewage enters the sewage treatment box 1 through the sewage filling pipe 102 and is filtered through the filter holes 201 by being in contact with the filter cylinder 2; when the filter holes 201 are blocked by sundries, the motor 202 is started, the motor 202 drives the filter cylinder 2 to rotate, and the sundries on the filter cylinder 2 can be scraped off through the seat body 204 in the process of rotating the filter cylinder 2, so that the sealing cover 101 does not need to be opened for cleaning and the cleaning period is prolonged.

[0027] The inner wall of the filter cylinder 2 is equidistantly welded with auxiliary plates 203, the auxiliary plates 203 are arranged in a staggered manner with the filter holes 201, and the auxiliary plates 203 can realize the sufficient mixing of sewage and decomposing agents in the process of rotating the filter cylinder 2, so that the sewage treatment effect is improved.

[0028] The front end surface of the sewage treatment box 1 is fixed with a first hydraulic cylinder 205, the extending end of the first hydraulic cylinder 205 penetrates through the sewage treatment box 1, the extending end of the first hydraulic cylinder 205 is fixed with a pushing block 206, and the pushing block 206 is in contact with the seat body 204 and the filter cylinder 2.

[0029] The rear end surface of the sewage treatment box 1 is provided with a residue discharge hole 104 matched with the pushing block 206 in size, the residue discharge hole 104 is in alignment with the pushing block 206, the rear end surface of the sewage treatment box 1 is symmetrically welded with guide rods A3, the guide rods A3 are slidably provided with sealing blocks 301, and each guide rod A3 is sleeved with a first spiral spring 302, so that the sealing blocks 301 are clamped at the residue discharge hole 104 under the elastic pushing of the first spiral springs 302.

[0030] The push block 206 is welded with a convex 207 on the rear end face, the convex 207 is a conical structure, when the residue is discharged, the first hydraulic cylinder 205 is driven to extend, the first hydraulic cylinder 205 drives the push block 206 to move backward, the push block 206 pushes the residue to the residue discharge hole 104, at this time, the sealing block 301 is pushed open under the action of the convex 207, and the residue is discharged from the sewage treatment tank 1 after the sealing block 301 is pushed open.

[0031] The funnel 103 is fixed with a connecting seat 401, a connecting rod A 402 is slidably arranged on the connecting seat 401, a sealing ball 403 is welded on the lower end of the connecting rod A 402, a blocking seat 405 is welded on the lower position of the sealing ball 403 in the funnel 103, and the second spiral spring 404 is sleeved on the connecting rod A 402. The sealing ball 403 is in elastic contact with the blocking seat 405 under the elastic pushing of the second spiral spring 404.

[0032] The funnel 103 is welded with a connecting frame 406, the connecting rod B 407 is slidably arranged on the connecting frame 406, the left end of the connecting rod B 407 is in contact with the lower position of the outer wall of the sealing ball 403, the right end of the connecting rod B 407 is welded with a stress head 408, and the third spiral spring 409 is sleeved on the connecting rod B 407. The stress head 408 is clamped with the filter hole 201 under the elastic pushing of the third spiral spring 409. When the additive is added, the additive is added to the funnel 103, at this time, the additive flows to the sealing ball 403, and when the filter cylinder 2 rotates, the filter hole 201 drives the stress head 408 to move left, at this time, the connecting rod B 407 extrudes the sealing ball 403 to move upward, thereby realizing intermittent feeding of the additive. The intermittent feeding of the additive can improve the mixing efficiency of the additive and the sewage, thereby improving the treatment efficiency of the sewage.

[0033] The sewage treatment tank 1 is welded with a cylindrical pipe 501, a discharge pipe 502 is slidably arranged in the cylindrical pipe 501, a circular hole is equally arranged on the outer wall of the right end of the discharge pipe 502, a valve is installed on the discharge pipe 502, a base block 503 is welded on the discharge pipe 502, and electric cylinders 504 are symmetrically fixed on the left end face of the sewage treatment tank 1. The extending ends of the electric cylinders 504 are fixed on the base block 503. When discharging, the valve on the discharge pipe 502 is opened, and when the valve is damaged and cannot be closed, the two electric cylinders 504 are driven to extend, the discharge pipe 502 is driven to move left by the two electric cylinders 504, and when the circular hole on the discharge pipe 502 is blocked by the cylindrical pipe 501, the sealing of the discharge pipe 502 is completed. The blocking of the discharge pipe 502 by the cylindrical pipe 501 can be used as an emergency sealing piece and a reinforced sealing piece.

[0034] The sewage treatment box 1 is symmetrically slidably provided with a guide rod B601, the left end of the guide rod B601 is fixed on an agitating plate 602, the agitating plate 602 is located in the sewage treatment box 1, the right end surface of the sewage treatment box 1 is fixed with a second hydraulic cylinder 603, the extending end of the second hydraulic cylinder 603 penetrates through the sewage treatment box 1, the extending end of the second hydraulic cylinder 603 is fixed on the agitating plate 602, the second hydraulic cylinder 603 is driven to reciprocatingly extend and retract, the agitating plate 602 is driven to reciprocatingly move by the second hydraulic cylinder 603, and the sewage and the decomposing agent can be mixed again through the reciprocating movement of the agitating plate 602, so that the sewage treatment effect is further improved.

[0035] In the embodiment two, on the basis of the embodiment one, as shown in the figure, Figures 1-8 The agitating plate 602 is a rectangular block structure, equidistant mixing holes 604 are formed in the agitating plate 602, and the mixing effect of the sewage and the decomposing agent can be improved again through the mixing holes 604 when the agitating plate 602 moves leftward and rightward.

[0036] The working principle of the embodiment is as follows: the sewage enters into the sewage treatment box 1 through the sewage filling pipe 102, at this time, the sewage contacts the filter cylinder 2 and is filtered through the filter holes 201, when the filter holes 201 are blocked by sundries, the motor 202 is started, the motor 202 drives the filter cylinder 2 to rotate, the sundries at the filter cylinder 2 can be scraped off through the seat body 204 in the process of the rotation of the filter cylinder 2; at the same time, the sewage and the decomposing agent can be fully mixed through the auxiliary plate 203 in the process of the rotation of the filter cylinder 2; at the same time, the second hydraulic cylinder 603 is driven to reciprocatingly extend and retract, the agitating plate 602 is driven to reciprocatingly move by the second hydraulic cylinder 603, and the sewage and the decomposing agent can be mixed again through the reciprocating movement of the agitating plate 602; the additive is added into the hopper 103, at this time, the additive flows to the sealing ball 403, when the filter holes 201 are rotated in the process of the rotation of the filter cylinder 2, the force head 408 moves leftward, at this time, the connecting rod B407 extrudes the sealing ball 403 to move upward, so that the intermittent addition of the additive is realized; when the sewage treatment is completed, the sewage needs to be discharged, the valve on the discharge pipe 502 can be opened, when the valve is damaged and cannot be closed, the two electric cylinders 504 are driven to extend, the two electric cylinders 504 drive the discharge pipe 502 to move leftward, when the circular hole on the discharge pipe 502 is blocked by the cylindrical pipe 501, the sealing of the discharge pipe 502 is completed, the blocking of the discharge pipe 502 by the cylindrical pipe 501 can be used as an emergency sealing piece; when the scraped sundries are removed, the first hydraulic cylinder 205 is driven to extend, the first hydraulic cylinder 205 drives the pushing block 206 to move backward, the pushing block 206 pushes the residues to the residue discharge hole 104, at this time, the sealing block 301 is pushed open under the action of the protrusion 207, and the residues are discharged from the sewage treatment box 1 after the sealing block 301 is pushed open.

Claims

1. A wastewater treatment device for preparing silica dispersion, characterized in that, include: Wastewater treatment tank (1); a sealing cover (101) is fixed on the top of the wastewater treatment tank (1), a wastewater filling pipe (102) is fixed on the sealing cover (101), and a funnel (103) is also fixed on the sealing cover (101); a filter cylinder (2) rotates inside the wastewater treatment tank (1), a motor (202) is fixed on the front end face of the wastewater treatment tank (1), the output shaft of the motor (202) is fixed on the rotating shaft of the filter cylinder (2), the filter cylinder (2) is a cylindrical structure, and the filter cylinder (2) has equidistant openings on its outer wall. The filter cylinder (2) is provided with a filter hole (201). The outer wall of the filter cylinder (2) is in contact with the bottom surface of the sealing cover (101). The filter cylinder (2) is located below the sewage filling pipe (102). The sewage treatment tank (1) is equipped with an L-shaped seat (204) welded inside. The left side of the seat (204) is in contact with the outer wall of the filter cylinder (2). The upper surface of the seat (204) is in contact with the bottom surface of the sealing cover (101). The front and rear surfaces of the seat (204) are in contact with the front and rear surfaces of the inner wall of the sewage treatment tank (1), respectively.

2. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, The filter cylinder (2) has auxiliary plates (203) welded at equal intervals on its inner wall. The auxiliary plates (203) and the filter holes (201) are arranged in an alternating pattern.

3. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, A hydraulic cylinder (205) is fixed to the front end of the sewage treatment tank (1). The extended end of the hydraulic cylinder (205) passes through the sewage treatment tank (1). A push block (206) is fixed to the extended end of the hydraulic cylinder (205). The push block (206) contacts the seat (204) and the filter cylinder (2).

4. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, The wastewater treatment tank (1) has a residue discharge hole (104) on its rear end face that matches the size of the push block (206). The residue discharge hole (104) and the push block (206) are aligned. A guide rod A (3) is symmetrically welded to the rear end face of the wastewater treatment tank (1). A sealing block (301) slides on the guide rod A (3). A first spiral spring (302) is sleeved on each guide rod A (3). Under the elastic push of the first spiral spring (302), the sealing block (301) is engaged at the residue discharge hole (104).

5. The wastewater treatment equipment for preparing silica dispersion according to claim 4, characterized in that, The push block (206) has a protrusion (207) welded to the rear end face, and the protrusion (207) has a conical structure.

6. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, A connecting seat (401) is fixed inside the funnel (103). A connecting rod A (402) slides on the connecting seat (401). A sealing ball (403) is welded to one end of the connecting rod A (402). A stop (405) is welded inside the funnel (103) below the sealing ball (403). A second helical spring (404) is sleeved on the connecting rod A (402). Under the elastic force of the second helical spring (404), the sealing ball (403) and the stop (405) come into elastic contact.

7. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, A connecting frame (406) is welded onto the funnel (103), and a connecting rod B (407) slides on the connecting frame (406). One end of the connecting rod B (407) is in contact with the lower part of the outer wall of the sealing ball (403), and a force-receiving head (408) is welded onto the right end of the connecting rod B (407). A No. 3 spiral spring (409) is sleeved on the connecting rod B (407). Under the elastic push of the No. 3 spiral spring (409), the force-receiving head (408) engages with the filter hole (201).

8. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, A cylindrical tube (501) is welded onto the sewage treatment tank (1). A discharge pipe (502) slides inside the cylindrical tube (501). Circular holes are equidistantly opened on the outer wall of the right end of the discharge pipe (502). A valve is installed on the discharge pipe (502). A base block (503) is welded onto the discharge pipe (502). An electric cylinder (504) is symmetrically fixed on the left end of the sewage treatment tank (1). The extended ends of the electric cylinder (504) are all fixed on the base block (503).

9. The wastewater treatment equipment for preparing silica dispersion according to claim 1, characterized in that, The wastewater treatment tank (1) has guide rods B (601) that slide symmetrically. The left end of each guide rod B (601) is fixed on a stirring plate (602). The stirring plate (602) is located inside the wastewater treatment tank (1). A second hydraulic cylinder (603) is fixed on the right end face of the wastewater treatment tank (1). The extended end of the second hydraulic cylinder (603) passes through the wastewater treatment tank (1) and is fixed on the stirring plate (602).

10. The wastewater treatment equipment for preparing silica dispersion according to claim 9, characterized in that, The stirring plate (602) is a rectangular block structure, and mixing holes (604) are equally spaced on the stirring plate (602).

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