Flocculant dosing device

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to a flocculant dosing device. The device comprises an accommodating mechanism, a mixing mechanism arranged on the accommodating mechanism, and a crushing mechanism arranged on the mixing mechanism; the accommodating mechanism comprises an accommodating box, a liquid discharge box arranged at the bottom of the accommodating box, a mixing box arranged at one side of the liquid discharge box, and a circulation assembly arranged on the accommodating box; and the mixing mechanism comprises a drive motor arranged at the top of the mixing box. In the device, the provision of a rotating cylinder can effectively drive crushing tool carriers and mixing grids arranged on the peripheral side to rotate. The device can effectively ensure the position of a drive disk during rotation. The crushing mechanism can be driven to work when the water level is low, and when the water level rises, the crushing mechanism fails and thus is prevented from affecting the mixing effect.

Description

A flocculant dosing device Technical Field

[0001] This invention relates to the technical field of wastewater treatment, and in particular to a flocculant dosing device. Background Technology

[0002] With rapid economic development and escalating water pollution, water resources have severely constrained sustainable economic development. Therefore, the country attaches great importance to water pollution control and encourages enterprises to adopt various water-saving technologies for deep treatment and reuse of various wastewaters. Fully automatic dosing devices are widely used in power plant raw water and boiler feedwater treatment systems, as well as various petrochemical dosing systems and wastewater treatment systems, such as for adding coagulants, flocculants, and phosphates. Automatic dosing devices operate fully automatically, saving labor; the dosage is precisely adjustable, avoiding waste; and maintenance is simple. They are particularly suitable for dissolving and adding various dry powders, granules, flocculants, and concentrated powders.

[0003] The existing wastewater treatment process requires chemical preparation, which involves mixing water and chemicals before pouring the mixture into the wastewater for reaction. However, after the preparation, a significant amount of chemical powder cannot be completely dissolved in the water. Furthermore, to prevent waste, the remaining powder is added to the next preparation round. After multiple preparations, a large amount of clumps can form, clogging the pipes and wasting the powder. Based on this, we have designed a flocculant dosing device.

[0004] Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems of powder agglomeration and waste in the flocculant dosing devices mentioned above or in the prior art, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a flocculant dosing device.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a flocculant dosing device, comprising a containing mechanism, a mixing mechanism disposed on the containing mechanism, and a crushing mechanism disposed on the mixing mechanism; the containing mechanism includes a containing tank, a drain tank disposed at the bottom of the containing tank, a mixing tank disposed on one side of the drain tank, and a circulation assembly disposed on the containing tank; the mixing mechanism includes a drive motor disposed at the top of the mixing tank, a mixing fan blade body disposed at the bottom of the drive motor, and a docking cylinder disposed at the bottom of the mixing fan blade body; the crushing mechanism includes a docking assembly disposed in the docking cylinder and a crushing assembly disposed on the docking assembly.

[0009] In a preferred embodiment of the flocculant dosing device of the present invention, the circulation component includes a three-way pipe disposed between the container and the mixing tank, a valve group disposed on the three-way pipe, a filter box disposed on the three-way pipe, and a drain pipe disposed on the container.

[0010] In a preferred embodiment of the flocculant dosing device of the present invention, the valve group comprises two valve bodies, both located inside the containment box, and the three ends of the three-way pipe are respectively connected to the outside of the containment box, the inside of the containment box, and the inside of the mixing box.

[0011] In a preferred embodiment of the flocculant dosing device of the present invention, the docking assembly includes a vent hole disposed in the docking cylinder, a docking plate disposed in the docking cylinder, a docking hole and a through hole disposed on the docking plate, and an outer groove provided at the bottom edge of the docking cylinder.

[0012] In a preferred embodiment of the flocculant dosing device of the present invention, the vent hole is located at the top of the inner wall of the docking cylinder, the docking plate is fixedly connected to the docking cylinder, and the docking cylinder is located between the vent hole and the outer groove.

[0013] As a preferred embodiment of the flocculant dosing device of the present invention, the docking assembly further includes a float box disposed between the docking plate and the docking cylinder, the float box having a water passage groove at its edge, and a docking rod disposed at the bottom of the float box, the bottom of the docking rod having an arc surface.

[0014] In a preferred embodiment of the flocculant dosing device of the present invention, the vent hole is located at the top of the circular box, there are multiple water passages, and the multiple water passages are distributed in a ring array around the periphery of the floating box, and the docking rod is slidably connected to the docking hole.

[0015] In a preferred embodiment of the flocculant dosing device of the present invention, the crushing component includes a receiving groove disposed at the center of the bottom of the mixing tank, a rotating cylinder disposed in the receiving groove, an installation groove and a water inlet hole respectively provided on the bottom of the inner wall of the rotating cylinder, a plurality of rectangular grooves opened on the periphery of the rotating cylinder, a positioning seat provided inside each of the rectangular grooves, a crushing blade holder and a mixing grid respectively provided on the plurality of positioning seats, a bottom cylinder rotatably connected to the center of the inner wall of the receiving groove, a sliding cylinder disposed on the bottom cylinder, the outer wall of the sliding cylinder fitting against the inner wall of the bottom cylinder, and a return spring provided between the bottom cylinder and the sliding cylinder.

[0016] As a preferred embodiment of the flocculant dosing device of the present invention, the accommodating trough has a circular cross-section and is located at the bottom center of the mixing tank. The rotating cylinder is located outside the bottom cylinder, which is hollow. The two ends of the reset spring are fixedly connected to the sliding cylinder and the bottom cylinder, respectively.

[0017] As a preferred embodiment of the flocculant dosing device of the present invention, the crushing component further includes an abutting block disposed on the inner wall of the receiving groove, a docking block disposed on the abutting block, the docking block being connected to the mounting groove, an inner groove being provided at the top of the inner wall of the rotating cylinder corresponding to the outer groove, a driving disk being fixedly connected to the inner wall of the rotating cylinder, and the driving disk being provided with an insertion hole and a central hole.

[0018] The beneficial effects of the flocculant dosing device of the present invention are as follows: The present invention can effectively drive the surrounding crushing blade holder and mixing grid to rotate by setting the rotating cylinder. During the rotation, the device can effectively ensure the position of the drive disc. The device can drive the crushing mechanism to work when the water level is low, and make the crushing mechanism fail when the water level rises, thus avoiding the crushing mechanism from affecting the mixing effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the flocculant dosing device.

[0021] Figure 2 is a schematic cross-sectional view of the flocculant dosing device.

[0022] Figure 3 is a schematic diagram of the mixing mechanism of the flocculant dosing device.

[0023] Figure 4 is a schematic diagram of the crushing mechanism of the flocculant dosing device.

[0024] Figure 5 is a schematic diagram of the crushing component structure of the flocculant dosing device.

[0025] Figure 6 is a cross-sectional view of the crushing component of the flocculant dosing device. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, referring to Figures 1 to 5, is the first embodiment of the present invention. This embodiment provides a flocculant dosing device, including a holding mechanism 100, a mixing mechanism 200 disposed on the holding mechanism 100, and a crushing mechanism 300 disposed on the mixing mechanism 200.

[0030] Specifically, the container 100 is designed to facilitate better mixing of the liquid medicine, the mixing mechanism 200 is designed to facilitate better mixing of the powder medicine into the water, the crushing mechanism 300 is designed to facilitate the crushing of lumpy materials in the water, and the crushing mechanism 300 is designed to facilitate better crushing of solids deposited at the bottom of the container 100.

[0031] The container mechanism 100 includes a container 101, a drain tank 102 disposed at the bottom of the container 101, a mixing tank 103 disposed on one side of the drain tank 102, and a circulation assembly 104 disposed on the container 101.

[0032] The container 101 has a rectangular cross-section and can effectively store the mixed medicine solution. The mixing tank 103 can effectively hold the unmixed medicine solution. The circulation component 104 can effectively guide the medicine solution inside the mixing tank 103 into the mixing tank 103, and at the same time, it can guide the medicine solution inside the container 101 to the outside, thereby performing the dosing operation.

[0033] The mixing mechanism 200 includes a drive motor 201 disposed at the top of the mixing box 103, a mixing fan blade body 202 disposed at the bottom of the drive motor 201, and a docking cylinder 203 disposed at the bottom of the mixing fan blade body 202; the crushing mechanism 300 includes a docking component 301 disposed in the docking cylinder 203, and a crushing component 302 disposed on the docking component 301.

[0034] Furthermore, during operation, the drive motor 201 effectively drives the mixing fan blade body 202 to rotate. Simultaneously, the rotation of the mixing fan blade body 202 drives the docking cylinder 203 to rotate. The rotation of the docking cylinder 203 drives the crushing mechanism 300 to crush the powder inside the containing box 101. The docking rod 301h effectively transmits the torque on the mixing fan blade body 202 to the crushing mechanism 300. The crushing mechanism 300 can crush the newly added powder and simultaneously crush the remaining powder in the mixing box 103. The powder inside is mixed. After the powder and water in the mixing box 103 are mixed, water is drained from the middle of the mixing box 103 to discharge the prepared medicine. After the medicine is discharged, the remaining medicine contains undissolved powder. The powder can be crushed by starting the crushing mechanism 300. Alternatively, the powder for the next batch of medicine can be poured into the mixing box 103 for pretreatment. After crushing for a certain period of time, water is poured into the mixing box 103, and the powder in the mixing box 103 can be mixed by the mixing fan blade body 202.

[0035] In summary, the crushing mechanism 300 facilitates better crushing of the solids deposited at the bottom of the containing mechanism 100, and can further crush the remaining liquid medicine. The mixing mechanism 200 can effectively export the prepared liquid medicine.

[0036] Example 2, referring to Figures 2-6, is the second embodiment of the present invention, which differs from the previous embodiment in that...

[0037] The circulation assembly 104 includes a three-way pipe 104a disposed between the container 101 and the mixing tank 103, a valve assembly 104b disposed on the three-way pipe 104a, a filter box 104c disposed on the three-way pipe 104a, and a drain pipe 104d disposed on the container 101. The valve assembly 104b contains two valve bodies, both located inside the container 101. The three ends of the three-way pipe 104a are respectively connected to the outside of the container 101, the inside of the container 101, and the inside of the mixing tank 103.

[0038] Specifically, the three-way pipe 104a can effectively drain the liquid medicine inside the mixing box 103, and can also introduce the liquid medicine in the mixing box 103 into the container box 101. This device can effectively guide the liquid medicine. The filter box 104c prevents the powder medicine in the mixing box 103 from flowing into the container box 101.

[0039] The docking assembly 301 includes a vent 301a disposed in the docking cylinder 203, a docking plate 301b disposed in the docking cylinder 203, a docking hole 301c and a through hole 301d disposed on the docking plate 301b, and an outer groove 301e provided at the bottom edge of the docking cylinder 203. The vent 301a is located at the top of the inner wall of the docking cylinder 203, the docking plate 301b is fixedly connected to the docking cylinder 203, and the docking cylinder 203 is located between the vent 301a and the outer groove 301e.

[0040] Furthermore, the vent 301a effectively connects the inside and outside of the docking cylinder 203. When liquid medicine enters the docking cylinder 203, the vent 301a prevents the liquid medicine from entering the docking cylinder 203. The docking hole 301c facilitates better positioning of the docking rod 301h. There are multiple docking holes 301c, which are arranged in a ring array on the docking plate 301b. The through hole 301d has a circular cross-section. The through hole 301d facilitates the communication between the air at the bottom and top of the docking plate 301b, and ensures that water can flow through the through hole 301d to contact the float box 301f.

[0041] The docking assembly 301 also includes a float box 301f disposed between the docking plate 301b and the docking cylinder 203. A water passage groove 301g is provided at the edge of the float box 301f. A docking rod 301h is disposed at the bottom of the float box 301f, and the bottom of the docking rod 301h has an arc surface 301i. A vent hole 301a is located at the top of the circular box. Multiple water passage grooves 301g are arranged in a circular array around the float box 301f. The docking rod 301h is slidably connected to the docking hole 301c.

[0042] The pontoon 301f is designed to provide upward buoyancy when water flows into it. The outer wall of the pontoon 301f fits snugly against the inner wall of the docking cylinder 203. Two water channels 301g, located on either side of the pontoon 301f, are arc-shaped as the pontoon 301f rises. The water channels 301g prevent the pontoon 301f from lacking side support during ascent. The docking rod 301h facilitates better connection of the docking plate. 301b is connected to the drive disc 302o. When the water level rises, the float 301f rises, which in turn drives the docking rod 301h to rise. The rise of the docking rod 301h disconnects the connection between the docking rod 301h and the drive disc 302o. At this time, the docking cylinder 203 rotates, which drives the docking plate 301b to rotate. The docking plate 301b will spin freely, thereby separating the crushing mechanism 300 from the mixing mechanism. This prevents the crushing mechanism 300 from affecting the operation of the mixing equipment.

[0043] The rest of the structure is the same as in Example 1.

[0044] In summary, the vent 301a effectively connects the inside and outside of the docking cylinder 203. When liquid medicine enters the docking cylinder 203, the vent 301a prevents the liquid medicine from entering the docking cylinder 203. The through hole 301d ensures that the water flow can contact the float box 301f through the through hole 301d.

[0045] Example 3, referring to Figures 1-6, is the third embodiment of the present invention. Unlike the previous embodiment, the crushing component 302 includes a receiving groove 302a located at the center of the bottom of the mixing box 103, a rotating cylinder 302b located in the receiving groove 302a, an installation groove 302c and a water inlet 302d respectively provided on the bottom of the inner wall of the rotating cylinder 302b, and multiple rectangular grooves 302e opened on the periphery of the rotating cylinder 302b. Each rectangular groove 302e is provided with a positioning seat 302f. The multiple positioning seats 302f are respectively provided with a crushing blade holder 302g and a mixing grid 302h. A bottom cylinder 302i is rotatably connected to the center of the inner wall of the receiving groove 302a, and a sliding cylinder 302j is provided on the bottom cylinder 302i. The outer wall of the sliding cylinder 302j is in contact with the inner wall of the bottom cylinder 302i, and a return spring 302k is provided between the bottom cylinder 302i and the sliding cylinder 302j.

[0046] Specifically, during operation, the accommodating trough 302a can effectively hold more powder, facilitating crushing by the crushing mechanism 300 and achieving effective mixing of the liquid. The rotating drum 302b can effectively drive the surrounding crushing blade holder 302g and mixing grid 302 to rotate, thereby improving the material mixing effect inside the mixing box 103. There is a gap between the positioning seat 302f and the rectangular trough 302e. During the rotation of the rotating drum 302b, the positioning seat 302f rotates, causing the swaying positioning seat 302f to move. 02f To avoid damage caused by excessive rigidity during rotation, the bottom cylinder 302i is designed to better limit the sliding cylinder 302j. This device can effectively ensure the position of the drive disc 302o during rotation. When the drive disc 302o rises, the sliding cylinder 302j will rise. During the rise of the sliding cylinder 302j, the return spring 302k will extend. The extension of the return spring 302k will accumulate elastic potential energy. The return spring 302k, which has accumulated elastic potential energy, can effectively drive the sliding cylinder 302j to return to its original position.

[0047] The receiving groove 302a has a circular cross-section and is located at the bottom center of the mixing box 103. The rotating cylinder 302b is located outside the bottom cylinder 302i, which is hollow. The two ends of the return spring 302k are fixedly connected to the sliding cylinder 302j and the bottom cylinder 302i, respectively. The crushing mechanism 300 also includes an abutment block 302l disposed on the inner wall of the receiving groove 302a, and a docking block 302m disposed on the abutment block 302l. The docking block 302m is connected to the mounting groove 302c. The top of the inner wall of the rotating cylinder 302b is provided with an inner groove 302n corresponding to the outer groove 301e. A drive disk 302o is fixedly connected to the inner wall of the rotating cylinder 302b. The drive disk 302o is provided with an insertion hole 302p and a central hole 302q.

[0048] Furthermore, the setting of the receiving tank 302a can effectively isolate powdery materials. Under the action of gravity, the powdery materials will fall into the receiving tank 302a. During the operation of the device, it can prioritize stirring and mixing the materials inside the receiving tank 302a, thereby effectively isolating the agglomerated materials. The contact block 302l and the docking block 302m, together with the operation of the return spring 302k, can drive the mixing grid 302 and the crushing blade holder 302g to shake up and down, thereby improving the crushing effect on agglomerated materials.

[0049] The rest of the structure is the same as in Example 2.

[0050] Dosing process: A mixture of water and powdered chemicals is placed in mixing tank 103, and the water and powder are mixed by mixing mechanism 200. Generally, the resulting liquid will separate into layers, with undecomposed powdered chemicals settling at the bottom of mixing tank 103. At this point, the liquid is drained from the lower part of mixing tank 103 into drainage tank 102 for settling. The liquid inside drainage tank 102 can then be added to wastewater for further processing. Any undischarged liquided chemicals will remain inside mixing mechanism 200. At this point, the water level is low, and the floating box 301f of crushing mechanism 300... Without contact, the powder for the next round of drug preparation is placed into the mixing tank 103, and the mixing mechanism 200 is started. The crushing mechanism 300 moves accordingly to crush and mix the liquid inside the mixing tank 103. Then, water is introduced. When the water enters the mixing tank 103, the float 301f rises, causing the docking rod 301h to separate from the insertion hole 302p. The rotation of the mixing fan blade body 202 can only drive the docking cylinder 203 to rotate. The highly concentrated liquid inside the mixing tank 103 reaches the target after being diluted by the newly introduced water and is discharged again in a cycle.

[0051] The working process of the crushing mechanism 300: When the water level inside the device does not contact the float 301f, the mixing fan blade body 202 rotates. The rotation of the mixing fan blade body 202 drives the drive disc 302o to rotate. The rotation of the drive disc 302o drives the rotating drum 302b to rotate. During the rotation of the rotating drum 302b, the docking block 302m rotates. The docking block 302m contacts the abutting block 302l, thereby causing the rotating drum 302b to sway up and down. The up and down swaying of the rotating drum 302b drives the crushing knife holder 302g and the mixing grid 302 to rotate, thereby better crushing the powder.

[0052] When the crushing work is completed, water is poured into the mixing tank 103. The water causes the float 301f to rise. During the rise of the float 301f, the docking rod 301h is disengaged from the insertion hole 302p. The rotation of the mixing fan blade body 202 can only drive the docking cylinder 203 to rotate.

[0053] In summary, the rotating drum 302b can effectively drive the surrounding crushing blade holder 302g and mixing screen 302 to rotate. During rotation, the device can effectively ensure the position of the drive disc 302o. The device can drive the crushing mechanism 300 to work when the water level is low, and disable the crushing mechanism 300 when the water level rises, thus preventing the crushing mechanism 300 from affecting the mixing effect. When the water level is high, the crushing effect of the crushing mechanism 300 is not ideal, thereby ensuring that it does not affect the operation of the mixing mechanism 200.

[0054] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0056] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A flocculant dosing apparatus characterized by comprising: The utility model provides a kind of waste oil recycling device, including accommodating mechanism (100), mixing mechanism (200) being arranged on the accommodating mechanism (100), crushing mechanism (300) being arranged on the mixing mechanism (200); The accommodating mechanism (100) includes an accommodating box (101), a drainage tank (102) arranged at the bottom of the accommodating box (101), a mixing tank (103) arranged on one side of the drainage tank (102), and a circulating assembly (104) arranged on the accommodating box (101); The mixing mechanism (200) includes a drive motor (201) arranged at the top of the mixing tank (103), a mixing fan body (202) arranged at the bottom of the drive motor (201), and a docking cylinder (203) arranged at the bottom of the mixing fan body (202). The crushing mechanism (300) includes a docking assembly (301) arranged in the docking cylinder (203) and a crushing assembly (302) arranged on the docking assembly (301).

2. The flocculant dosing apparatus of claim 1, wherein: The circulating assembly (104) includes a three-way pipe (104a) arranged between the accommodating box (101) and the mixing tank (103), a valve group (104b) arranged on the three-way pipe (104a), a filter box (104c) arranged on the three-way pipe (104a), and a drainage pipe (104d) arranged on the accommodating box (101).

3. The flocculant dosing apparatus of claim 2, wherein: The valve body in the valve group (104b) is two, and both are located inside the accommodating box (101), and the three ends of the three-way pipe (104a) are respectively connected to the outside of the accommodating box (101), the inside of the accommodating box (101), and the inside of the mixing tank (103).

4. The flocculant dosing apparatus of claim 3, wherein: The docking assembly (301) includes a gas leak hole (301a) arranged in the docking cylinder (203), a docking plate (301b) arranged in the docking cylinder (203), a docking hole (301c) and a through hole (301d) arranged on the docking plate (301b), and an outer groove (301e) arranged at the edge of the bottom of the docking cylinder (203).

5. The flocculant dosing apparatus of claim 4, wherein: The gas leak hole (301a) is located at the top of the inner wall of the docking cylinder (203), the docking plate (301b) is fixedly connected with the docking cylinder (203), and the docking cylinder (203) is located between the gas leak hole (301a) and the outer groove (301e).

6. The flocculant dosing apparatus of claim 5, wherein: The docking assembly (301) further includes a floating box (301f) arranged between the docking plate (301b) and the docking cylinder (203), an overwater groove (301g) arranged at the edge of the floating box (301f), and a docking rod (301h) arranged at the bottom of the floating box (301f), wherein the bottom of the docking rod (301h) is provided with an arc surface (301i).

7. The flocculant dosing apparatus of claim 6, wherein: The gas leak hole (301a) is located at the top of the circular box, the number of the overwater grooves (301g) is multiple, the multiple overwater grooves (301g) are arranged in a ring array around the side of the floating box (301f), and the docking rod (301h) is slidingly connected with the docking hole (301c).

8. The flocculant dosing apparatus of claim 7, wherein: The crushing assembly (302) comprises a containing groove (302a) arranged at the bottom center of the mixing box (103), a rotating cylinder (302b) arranged in the containing groove (302a), and a mounting groove (302c) and a water inlet hole (302d) arranged at the bottom of the inner wall of the rotating cylinder (302b), a plurality of rectangular grooves (302e) are arranged on the circumferential side of the rotating cylinder (302b), and a positioning seat (302f) is arranged in each of the rectangular grooves (302e), a crushing tool holder (302g) and a mixing mesh (302h) are arranged on each of the plurality of positioning seats (302f), a bottom cylinder (302i) is rotationally connected to the center of the inner wall of the containing groove (302a), a sliding cylinder (302j) is arranged on the bottom cylinder (302i), the outer wall of the sliding cylinder (302j) is attached to the inner wall of the bottom cylinder (302i), and a reset spring (302k) is arranged between the bottom cylinder (302i) and the sliding cylinder (302j).

9. The flocculant dosing apparatus of claim 8, wherein: The cross section of the containing groove (302a) is circular, the containing groove (302a) is located at the bottom center of the mixing box (103), the rotating cylinder (302b) is located outside the bottom cylinder (302i), the bottom cylinder (302i) is hollow, and the two ends of the reset spring (302k) are fixedly connected with the sliding cylinder (302j) and the bottom cylinder (302i) respectively.

10. The flocculant dosing apparatus according to claim 8 or 9, characterized by: The crushing assembly (302) further comprises a resisting block (302l) arranged on the inner wall of the containing groove (302a), and a butt joint block (302m) arranged on the resisting block (302l), wherein the butt joint block (302m) is connected with the mounting groove (302c), an inner groove (302n) is arranged on the top of the inner wall of the rotating cylinder (302b) corresponding to the outer groove (301e), a driving disc (302o) is fixedly connected to the inner wall of the rotating cylinder (302b), and a jack (302p) and a middle hole (302q) are arranged on the driving disc (302o).

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