Vortex stirring pool and bidirectional circulating pump

Abstract

The invention provides a vortex stirring pool and a two-way circulating pump, and relates to the technical field of metal anti-corrosion chemical engineering.The vortex stirring pool comprises a stirring pool body, a sedimentation well communicated with the interior of the stirring pool body is arranged at the pool bottom, a first communicating pipe is arranged on one side of the sedimentation well, and the outer end of the first communicating pipe is connected with the first end of the two-way circulating pump; an annular tank pressure equalizing pipe is arranged at the top of the tank, and a plurality of water outlet holes are uniformly distributed in the inner side wall of the annular tank pressure equalizing pipe; a second communicating pipe is arranged on the side wall of the stirring tank body, and the upper and lower ends of the second communicating pipe are respectively connected with the annular tank pressure equalizing pipe and the bidirectional circulating pump; the bidirectional circulating pump is provided with an outer pipe body, the outer pipe body comprises a first pipe body and a second pipe body which form an angle, the first pipe body and the second pipe body are connected through a bent pipe body, a pump shaft is arranged in the first pipe body and the bent pipe body, the pump shaft is arranged in the axial direction of the first pipe body, a plurality of impellers are arranged on the pump shaft, and the outer end of the pump shaft extends out of the outer pipe body and is connected with a driving motor. The driving motor can drive the pump shaft to rotate clockwise and anticlockwise around the pump shaft.

Description

Technical Field

[0001] The invention relates to the technical field of metal anticorrosion chemical engineering, in particular to a stirring tank. Background Art

[0002] For the corrosion protection of railway embedded parts or other steel structures, such as ships, surface treatment phosphating or passivation and anti-corrosion coating production process are required before painting to form a protective coating. As for phosphating treatment, the advantages and disadvantages of phosphating lie in the thickness and uniformity of the final phosphating film. The operation process directly leads to different types, thickness, surface density, structure and color of the phosphating film.

[0003] The key process is how to achieve full blending of the phosphating solution. The main components of the phosphating solution include phosphoric acid, prepared diluents, catalysts, and heavy metals. In the entire phosphating process, phosphoric acid is one of the main components of the phosphating solution. The stability and accuracy of its content is crucial to the quality of phosphating.

[0004] The configuration can be accurately measured by chemical analysis titration and colorimetry, but how to achieve stable and accurate content is a difficult problem in traditional process construction. In the actual phosphating operation process, most of them rely on operators to manually mix the phosphating solution with stirring tools based on their experience. However, due to the obstruction of workpieces in the phosphating tank, it is impossible to fully stir the solution. The phosphating effects often vary greatly due to the technical level of the operators. In addition, as a chemical product, the phosphating solution may cause varying degrees of harm to the operators if the manual stirring process is not careful. Summary of the invention

[0005] The object of the present invention is to provide a vortex stirring tank and a two-way circulation pump to solve the problem that the phosphating solution in the current art cannot be fully blended.

[0006] In order to solve the above problems, the present invention first provides a vortex stirring pool, comprising: a stirring pool body, a sedimentation well connected to the interior of the stirring pool body is provided at the bottom of the pool, a first connecting pipe is provided on one side of the sedimentation well, the first connecting pipe extends radially outwardly along the stirring pool body, and the outer end of the first connecting pipe is connected to the first end of a two-way circulation pump; a ring pool equalizing pressure pipe is provided on the top of the stirring pool body, and a plurality of water outlet holes are evenly arranged on the inner side wall of the ring pool equalizing pressure pipe, and the water outlet holes are all connected to the inner cavity of the stirring pool body; a second connecting pipe is provided on the side wall of the stirring pool body, and the second connecting pipe is arranged along the axial direction of the stirring pool body, and the upper end of the second connecting pipe is connected to the ring pool equalizing pressure pipe. The lower end is connected to the other end of the bidirectional circulation pump; the bidirectional circulation pump is provided with an outer tube body, the outer tube body includes a first tube body and a second tube body at an angle to each other, the two are connected by a bent tube body, the first tube body is provided with a first water inlet connected to the first connecting tube, the second tube body is provided with a second water inlet connected to the second connecting tube, the first tube body and the bent tube body are provided with a pump shaft, the pump shaft is arranged along the axial direction of the first tube body, a plurality of impellers are provided on the pump shaft, the outer end of the pump shaft extends out of the outer tube body and is connected to a drive motor, the drive motor can drive the pump shaft to rotate clockwise and counterclockwise around itself.

[0007] In this way, a first connecting pipe is arranged by the sedimentation well below the bottom of the pool, and a two-way circulation pump is connected to the outer end of the first connecting pipe, and the other end of the two-way circulation pump is connected to the second connecting pipe arranged on the side wall of the stirring pool body, and the second connecting pipe is connected to the ring pool pressure equalizing pipe arranged on the top of the pool, and a water outlet hole connected to the inner cavity of the stirring pool body is arranged on the ring pool pressure equalizing pipe. Since the pump shaft inside the two-way circulation pump can rotate clockwise and counterclockwise under the drive of the motor, the liquid in the stirring pool body can circulate forward or reversely in the above-connected passage. For example, when the pump shaft rotates clockwise, the liquid in the stirring pool body enters the first connecting pipe from the sedimentation well, and then enters the second connecting pipe driven by the rotation of the pump shaft, and then enters the ring pool pressure equalizing pipe, and is discharged from the water outlet hole thereon into the inside of the stirring pool body, thus forming a circulation. The pump body is located on the inner side of the annular pool pressure equalizing pipe, and has uniform water outlet thrusts in multiple directions around the inner cavity of the stirring pool body. The liquid inside the stirring pool body forms a vortex under the push of the vortex, so that the liquid is mixed evenly under rotation and stirring, which solves the problem that the phosphating solution in the current field cannot be fully blended. When the pump shaft rotates counterclockwise, the internal water circulation direction is opposite, that is, the liquid in the inner cavity of the stirring pool body enters from the water outlet, enters the inside of the two-way circulation pump through the second connecting pipe, enters the first connecting pipe driven by the rotation of the pump shaft, and then enters the sedimentation well, so that the liquid in the stirring pool body forms a spiral convex in the opposite direction of the vortex under the action of the water suction of the upper water outlet, that is, the middle part is higher than the surroundings, so that the internal liquid can form two mixing and stirring modes of vortex and spiral convex, so that it can be fully mixed, avoiding the defects of manual stirring, and solving the existing problems.

[0008] Furthermore, a mounting bracket connected to the outer tube body is provided below the pump shaft, a limit bearing is provided on the mounting bracket, and the outer end of the pump shaft is installed in the limit bearing.

[0009] Furthermore, a sewage pipe is connected to the lower end of the sedimentation well, and a sewage valve is provided on the sewage pipe, and the sewage valve controls the opening and closing of the sewage pipe.

[0010] Furthermore, the drain valve is provided with an intelligent motor, and the opening and closing of the drain valve is controlled by the intelligent motor.

[0011] Furthermore, an inner wall of the ring pool is provided on the inner side of the ring pool pressure equalizing pipe surrounding the side wall of the stirring pool body, and an outlet channel connected one-to-one with the water outlet holes is provided on the inner wall of the ring pool, and the water outlet channel is arranged along the inclination angle of the hole wall of the water outlet hole.

[0012] Furthermore, the bottom of the stirring tank body is funnel-shaped, the tank body is cylindrical, a filter plate is arranged radially between the tank body and the bottom, and the sedimentation well is located below the filter plate.

[0013] Furthermore, a surrounding pool observation platform is provided above the mixing pool body along the outer circumference, and a supporting step connected to the ground is provided on one side of the surrounding pool observation platform.

[0014] The present invention also provides a bidirectional circulation pump, comprising: an outer tube body, comprising a first tube body and a second tube body at an angle to each other, the two being connected by a bent tube body, the first tube body being provided with a first water inlet that can be connected to an external pipe, the second tube body being provided with a second water inlet that can be connected to an external pipe; a pump shaft, the main body of which is installed inside the first tube body and the bent tube body, and the outer end portion extending outside the outer tube body, the pump shaft being arranged along the axial direction of the first tube body, and a plurality of impellers being provided on the main body of the pump shaft; a driving motor being connected to the outer end portion of the pump shaft and being able to drive the pump shaft to rotate clockwise and counterclockwise around itself.

[0015] In this way, a pump shaft is arranged inside the outer tube body, which is divided along the axial direction of the first tube body, and the protruding part at the outer end is connected to the driving motor, and can rotate around itself in clockwise and counterclockwise directions under the drive of the driving motor, so that a circulation in two directions is formed. For example, when the pump shaft rotates clockwise, water enters from the first water inlet, and the water is driven into the second tube body by the rotation of the pump shaft, and the water is discharged from the second water inlet; when the pump shaft rotates counterclockwise, water enters from the second water inlet of the second tube body, and the water is brought into the first tube body by the rotation of the pump shaft, and is discharged from the first water inlet. In this way, circulating water pumping in two directions is realized, which solves the defect of one-way water supply of the water pump.

[0016] Furthermore, a mounting bracket connected to the outer tube body is provided below the pump shaft, a limit bearing is provided on the mounting bracket, and the outer end portion of the pump shaft is installed in the limit bearing.

[0017] Furthermore, flanges are installed on the first water inlet and the second water inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a vortex stirring tank provided in an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a vortex stirring tank provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of a stirring tank provided in an embodiment of the present invention;

[0022] Figure 4 A cross-sectional view of a stirring tank provided in an embodiment of the present invention;

[0023] Figure 5 A top view of a stirring tank provided in an embodiment of the present invention;

[0024] Figure 6 A cross-sectional view of a pressure equalizing pipe for a ring pool provided in an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of a vortex formation state in a vortex stirring pool provided in an embodiment of the present invention;

[0026] Figure 8 A cross-sectional view of a vortex forming state in a vortex stirring pool provided by an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of a vortex formation state of a vortex stirring pool provided in an embodiment of the present invention;

[0028] Fig.10 A cross-sectional view of a vortex stirring pool in a state of vortex formation provided by an embodiment of the present invention;

[0029] Fig.11 A schematic diagram of the structure of a bidirectional circulation pump provided in an embodiment of the present invention;

[0030] Fig.12 A cross-sectional view of a bidirectional circulation pump provided by an embodiment of the present invention;

[0031] Fig.13 A front view of a bidirectional circulation pump provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 100-mixing tank body; 101-filter plate; 102-circumferential pool observation platform; 103-supporting step; 110-sedimentation well; 111-first connecting pipe; 112-drain pipe; 113-drain valve; 114-intelligent motor; 120-circumferential pool equalizing pipe; 121-water outlet; 122-water outlet channel; 130-second connecting pipe;

[0034] 200-bidirectional circulation pump; 210-outer tube body; 211-first tube body; 2111-first water inlet; 2112-flange; 212-second tube body; 2121-second water inlet; 213-bent tube body; 220-pump shaft; 221-impeller; 230-drive motor; 240-mounting bracket; 241-limit bearing. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Example 1 Vortex stirring pool

[0037] This embodiment provides a vortex stirring pool, such as Figure 1-10 As shown, a bidirectional circulation pump 200 capable of bidirectional circulation is provided on the stirring tank body 100, which cooperates with the ring pool equalizing pressure pipe 120 on the top of the tank. When the motor drives the pump shaft 220 to rotate, the liquid inside the stirring tank body 100 can rotate to form vortices and swirls, so as to achieve full blending of the phosphating liquid in the entire tank, thereby obtaining perfect process quality and solving the defects of insufficient stirring and manual stirring in the prior art.

[0038] Specifically, Figure 1 and 2 As shown, the stirring tank body 100 is cylindrical and has a funnel-shaped bottom. A sedimentation well 110 connected to the interior of the tank is provided at the bottom of the tank. Preferably, a filter plate 101 is provided at the upper end of the sedimentation well 110 to form a better sedimentation effect when discharging waste. The specific position is set at the connection between the tank body and the bottom of the tank; a first connecting pipe 111 extending radially outward is provided on one side of the bottom of the sedimentation well 110, and a two-way circulation pump 200 is connected to the outer end of the first connecting pipe 111. In this embodiment, the other end of the two-way circulation pump 200 is axially upward along the stirring tank body 100, and a second connecting pipe 130 is connected to its upper end. A ring pool equalizing pressure pipe 120 is provided at the upper end of the tank top. The second connecting pipe 130 is connected to the ring pool equalizing pressure pipe 120, and a plurality of water outlet holes 121 are evenly distributed on the inner wall of the ring pool equalizing pressure pipe 120.

[0039] Combination Figure 1 , 2, 11, 12, and 13, the outer tube body 210 of the bidirectional circulation pump 200 is formed by a first tube body 211, a bent tube body 213, and a second tube body 212 connected in sequence. The bent tube body 213 mainly plays a role of connection and steering. The second tube body 212 is shorter in length and can certainly be formed by the first tube body 211 and the bent tube body 213. A rotatable pump shaft 220 is provided inside the second tube body 212. The pump shaft 220 is arranged along the axial direction of the first tube body 211. The pump shaft 220 is provided with a plurality of impellers 221, and the outer ends of the impellers 221 extend out of the outer tube body 210 and are connected to the drive motor 230. For example, a DC motor is used for control. Preferably, a mounting bracket 240 for mounting the pump shaft 220 is provided at the lower end of the outer tube body 210, and a limit bearing 241 is provided on the bracket. The outer end of the pump shaft 220 is installed in the limit bearing 241, and can rotate clockwise or counterclockwise under the rotation of the motor. A first water inlet 2111 and a second water inlet 2121 are respectively provided at the outer ends of the first tube body 211 and the second tube body 212. The first water inlet 2111 is connected to the first connecting pipe 111, and the second water inlet 2121 is connected to the second connecting pipe 130.

[0040] Thus, the stirring tank body 100 forms a circulation channel consisting of its inner cavity, the sedimentation well 110, the first connecting pipe 111, the two-way circulation pump 200, the second connecting pipe 130, the ring pool equalizing pressure pipe 120, and the water outlet 121. Since the pump shaft 220 inside the two-way circulation pump 200 can rotate clockwise and counterclockwise under the drive of the motor, the liquid in the stirring tank body 100 can circulate forward or reversely in the above-connected circulation channels.

[0041] Preferably, Figure 6 As shown, an inner side of the ring pool pressure equalizing pipe 120 is provided with an inner ring pool wall surrounding the side wall of the stirring pool body 100, and an outlet channel 122 which is connected to the outlet holes 121 one by one is provided along the inner ring pool wall. In this embodiment, nine water holes and outlet channels 122 are provided, and the outlet channels 122 are provided along the inclination angle of the hole wall of the outlet hole 121.

[0042] The driving motor 230 rotates counterclockwise, that is, it pushes the liquid into the pressure equalizing pipe 120 around the upper part of the pool and distributes it to 9 water outlets. Each water outlet drives the water in the 40° umbrella-shaped area in the pool to flow. The combined force of the 9 water outlets plus the liquid in the bottom sedimentation well 110 is pumped by the circulation pump to form a vortex shape in the whole pool, such as Figure 8 As shown, the phosphating liquid in the whole pool is fully stirred and fused. The speed of the pump shaft 220 can be controlled by the driving motor 230 to adjust the liquid flow rate; on the contrary, if the driving motor 230 rotates clockwise, a "rotating convex" not seen in nature is formed, such as Fig.10 As shown, the state opposite to the up and down rotation causes the entire pool to be stirred in the reverse direction, so that the phosphating liquid in the entire pool is fully blended.

[0043] Specifically, when the pump shaft 220 rotates clockwise, the liquid in the stirring pool body 100 enters the first connecting pipe 111 from the sedimentation well 110, and then is driven by the rotation of the pump shaft 220 to enter the second connecting pipe 130, and then enters the ring pool equalizing pipe 120, and is discharged from the water outlet 121 thereon into the inside of the stirring pool body 100, thus forming a cycle, and because the water outlet 121 is evenly distributed on the inner side of the ring pool equalizing pipe 120, there are uniform water outlet thrusts in multiple directions around the inner cavity of the stirring pool body 100, and the liquid inside forms a vortex under this push, and its formation state is as shown in FIG. Figure 7 As shown, the cross-sectional diagram is Figure 8 As shown, the center is lower than the surroundings, and the vortex state rotates to mix the liquid evenly, solving the problem that the phosphating solution in the current field cannot be fully blended;

[0044] When the pump shaft 220 rotates counterclockwise, the internal water circulation direction is opposite, that is, the liquid in the inner cavity of the stirring tank body 100 enters from the water outlet 121, enters the inside of the two-way circulation pump 200 through the second connecting pipe 130, and enters the first connecting pipe 111 driven by the rotation of the pump shaft 220, and then enters the sedimentation well 110, so that the liquid in the stirring tank body 100 forms a spiral convex in the opposite direction of the vortex under the action of the water suction of the upper water outlet 121, that is, the middle part is higher than the surroundings, and the spiral convex state is as shown in FIG. Fig. 9 and 10 shown.

[0045] Driven by the bidirectional circulation pump 200, this embodiment forms a water circulation system in two directions, and cooperates with the ring pool equalizing pipe 120 to enable the internal liquid to form two mixing and stirring modes of vortex and swirl, so that it can be fully mixed, avoiding the defects of manual stirring and solving the existing problems.

[0046] Preferably, a sewage pipe 112 is connected to the lower end of the sedimentation well 110, and a sewage valve 113 is provided on the sewage pipe 112, and the sewage valve 113 controls the opening and closing of the sewage pipe 112. An intelligent motor 114, such as a DC motor, is provided on the sewage valve 113, and the opening and closing of the sewage valve 113 are controlled by the intelligent motor 114. The intelligent motor 114 and the sewage valve 113 are existing mature products, and those skilled in the art can understand their specific control methods and technical principles, which will not be described again.

[0047] An electrically opened and closed sewage valve 113 is configured to monitor the amount of waste residue in the sewage sedimentation well 110 and open the gate to discharge sewage quantitatively at irregular intervals. This solves the problem of the inevitable large-scale waste of phosphating solution in the modern process of full-tank cleaning.

[0048] Preferably, Figure 1As shown, in order to facilitate observation of the internal conditions of the mixing tank body 100 , a surrounding pool observation platform 102 is provided above the mixing tank body 100 along the outer circumference thereof, and a supporting step 103 connected to the ground is provided on one side of the surrounding pool observation platform 102 .

[0049] Example 2 Bidirectional circulation pump

[0050] This embodiment provides a bidirectional circulation pump 200, such as Figure 11-13 As shown, it can be applied to the stirring tank body 100, as shown in the above embodiment, its application Figure 1 As shown, the bidirectional circulation pump 200 includes an outer tube body 210, a pump shaft 220 and a driving motor 230, and can form two different opposite directions of water inlet and outlet circulation when the driving motor 230 drives the pump shaft 220 to rotate.

[0051] Specifically, the outer tube body 210 includes a first tube body 211 and a second tube body 212 which are at an angle to each other, which is ninety degrees in this embodiment. The two are connected by a bent tube body 213. The first tube body 211 is provided with a first water inlet 2111 which can be connected to an external pipe, and the second tube body 212 is provided with a second water inlet 2121 which can be connected to an external pipe. Preferably, flanges 2112 are installed on the first water inlet 2111 and the second water inlet 2121, and are connected to the external pipe through the flanges 2112.

[0052] The main part of the pump shaft 220 is installed inside the first tube body 211 and the bent tube body 213, and the outer end part extends outside the outer tube body 210. The pump shaft 220 is arranged along the axial direction of the first tube body 211, and a plurality of impellers 221 are provided on the main part of the pump shaft 220.

[0053] The driving motor 230 is connected to the outer end portion of the pump shaft 220 and can drive the pump shaft 220 to rotate clockwise and counterclockwise around itself.

[0054] In this way, driven by the driving motor 230, the pump shaft 220 rotates clockwise and counterclockwise around itself, so that water circulation is formed in two directions. For example, when the pump shaft 220 rotates clockwise, water enters from the first water inlet 2111, and the water is driven into the second tube body 212 by the rotation of the pump shaft 220, and the water is discharged from the second water inlet 2121; when the pump shaft 220 rotates counterclockwise, water enters from the second water inlet 2121 of the second tube body 212, and the water is brought into the first tube body 211 by the rotation of the pump shaft 220, and is discharged from the first water inlet 2111. In this way, circulating water pumping in two directions is realized, which solves the defect of one-way water supply of the water pump.

[0055] Preferably, in order to ensure stable and convenient installation of the pump shaft 220 , a mounting bracket 240 connected to the outer tube body 210 is provided below the pump shaft 220 , and a limit bearing 241 is provided on the mounting bracket 240 , and the outer end portion of the pump shaft 220 is installed in the limit bearing 241 .

[0056] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0057] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0059] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vortex stirring tank, characterized in that: include: A stirring tank body (100) is provided with a sedimentation well (110) at the bottom thereof and connected to the inside thereof, a first connecting pipe (111) is provided on one side of the sedimentation well (110), the first connecting pipe (111) extends radially outwardly along the stirring tank body (100), and the outer end of the first connecting pipe (111) is connected to a first end of a bidirectional circulation pump (200); a ring pool pressure equalizing pipe (120) is provided at the top of the stirring tank body (100), and the ring pool pressure equalizing pipe (120) is provided at the top of the stirring tank body (100). A plurality of water outlet holes (121) are evenly arranged on the inner wall of the pressure pipe (120), and the water outlet holes (121) are all connected to the inner cavity of the stirring tank body (100); a second connecting pipe (130) is arranged on the side wall of the stirring tank body (100), and the second connecting pipe (130) is arranged along the axial direction of the stirring tank body (100), and the upper end of the second connecting pipe is connected to the annular pool pressure equalizing pipe (120), and the lower end is connected to the other end of the bidirectional circulation pump (200); A bidirectional circulation pump (200) is provided with an outer tube body (210), the outer tube body (210) comprising a first tube body (211) and a second tube body (212) which are angled with each other and are connected by a bent tube body (213), the first tube body (211) being provided with a first water inlet (2111) connected to the first connecting tube (111), the second tube body (212) being provided with a second water inlet (2121) connected to the second connecting tube (130 ... A pump shaft (220) is provided inside a tube body (211) and the bent tube body (213); the pump shaft (220) is arranged along the axial direction of the first tube body (211); a plurality of impellers (221) are provided on the pump shaft (220); the outer end of the pump shaft (220) extends outside the outer tube body (210) and is connected to a drive motor (230); the drive motor (230) can drive the pump shaft (220) to rotate clockwise and counterclockwise around itself.

2. The vortex stirring pool according to claim 1, characterized in that: A mounting bracket (240) connected to the outer tube body (210) is provided below the pump shaft (220), a limit bearing (241) is provided on the mounting bracket (240), and the outer end of the pump shaft (220) is mounted in the limit bearing (241).

3. The vortex stirring pool according to claim 1, characterized in that: The lower end of the sedimentation well (110) is connected to a sewage pipe (112), and a sewage valve (113) is provided on the sewage pipe (112). The sewage valve (113) controls the opening and closing of the sewage pipe (112).

4. The vortex stirring pool according to claim 3, characterized in that: The sewage valve (113) is provided with an intelligent motor (114), and the opening and closing of the sewage valve (113) is controlled by the intelligent motor (114).

5. The vortex stirring pool according to any one of claims 1 to 4, characterized in that: An inner wall of the ring pool is provided on the inner side of the ring pool pressure equalizing pipe (120) surrounding the side wall of the stirring pool body (100), and a water outlet channel (122) connected to the water outlet hole (121) in a one-to-one correspondence is provided on the inner wall of the ring pool. The water outlet channel (122) is arranged along the inclination angle of the hole wall of the water outlet hole (121).

6. The vortex stirring pool according to claim 5, characterized in that: The bottom of the stirring tank body (100) is funnel-shaped, the tank body is cylindrical, a filter plate (101) is arranged radially between the tank body and the bottom, and the sedimentation well (110) is located below the filter plate (101).

7. The vortex stirring pool according to claim 6, characterized in that: A pool observation platform (102) is provided above the stirring pool body (100) along the outer circumference, and a support step (103) connected to the ground is provided on one side of the pool observation platform (102).

8. A bidirectional circulation pump (200), characterized in that: include: The outer tube body (210) comprises a first tube body (211) and a second tube body (212) which are angled with each other and are connected by a bent tube body (213); the first tube body (211) is provided with a first water inlet (2111) which can be connected to an external pipe, and the second tube body (212) is provided with a second water inlet (2121) which can be connected to an external pipe; A pump shaft (220), the main body of which is installed inside the first tube body (211) and the bent tube body (213), and the outer end portion of which extends outside the outer tube body (210); the pump shaft (220) is arranged along the axial direction of the first tube body (211), and a plurality of impellers (221) are provided on the main body of the pump shaft (220); The driving motor (230) is connected to the outer end portion of the pump shaft (220) and is capable of driving the pump shaft (220) to rotate clockwise and counterclockwise around itself.

9. The bidirectional circulation pump (200) according to claim 8, characterized in that: A mounting bracket (240) connected to the outer tube body (210) is provided below the pump shaft (220), a limit bearing (241) is provided on the mounting bracket (240), and the outer end portion of the pump shaft (220) is mounted in the limit bearing (241).

10. The bidirectional circulation pump (200) according to claim 9, characterized in that: The first water inlet (2111) and the second water inlet (2121) are both provided with flanges (2112).

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