Circulating treatment equipment for wastewater

Abstract

The invention relates to the technical field of wastewater treatment, and discloses wastewater circulating treatment equipment which comprises a base and a controller, a rotating seat is movably arranged at the top of the base, a first treatment tank and a second treatment tank are arranged at the top of the rotating seat, and the first treatment tank and the second treatment tank are both filled with filtering gravel; the bottom of the side wall of the first treatment tank and the bottom of the side wall of the second treatment tank are each provided with a water outlet pipe and a fifth one-way valve. When the positions of the first treatment tank and the second treatment tank are switched, the self-flushing mechanism performs back flushing on the interior of the first treatment tank, and the waste water flows in the second treatment tank from top to bottom until the opening position of the end, away from the conveying pump, of the water conveying pipe is aligned with the opening position of a second water inlet located in the top of the second treatment tank; the device has an automatic backwashing function, can quickly switch the treatment tanks, and improves the efficiency of wastewater circulation treatment.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a wastewater circulation treatment device. Background Art

[0002] Wastewater treatment is the use of physical, chemical and biological methods to treat wastewater, purify the wastewater, reduce pollution, achieve the purpose of wastewater recovery and reuse, and make full use of water.

[0003] Existing wastewater recycling treatment equipment generally filters wastewater through structures such as filter screens and filter gravel. During use, the filter gravel is difficult to clean. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a wastewater circulation treatment device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A wastewater circulation treatment device comprises a base and a controller, wherein a rotating seat is movably provided on the top of the base, a treatment tank 1 and a treatment tank 2 are provided on the top of the rotating seat, the interiors of the treatment tanks 1 and 2 are filled with filtering sand and gravel, the bottoms of the side walls of the treatment tanks 1 and 2 are provided with water outlet pipes and one-way valves 5, and the tops of the side walls of the treatment tanks 1 and 2 are provided with sewage pipes and one-way valves 4; the tops of the treatment tanks 2 and 1 are provided with top covers of the same cylindrical structure, and the side walls of both ends of the top covers are provided with through water inlets 2, and one end of the two water inlets 2 is respectively connected to the interiors of the treatment tanks 1 and 2; a driving mechanism is provided on the base for driving The rotating seat rotates horizontally; a rotating ring of an annular structure is installed on the top of the base through a mounting frame, and the rotating ring is sleeved on the circumference of the top cover; a pre-filtering mechanism is arranged on the top of the rotating ring, and a water inlet pipe is arranged on the top of the pre-filtering mechanism, and a delivery pump and a water pipe are arranged on the side of the pre-filtering mechanism for extracting the pre-filtered waste water in the pre-filtering mechanism; one end of the water pipe away from the delivery pump extends to the inside of the rotating ring, and one end of the water pipe extending to the inside of the rotating ring abuts against the circumference of the top cover, and the opening position of one end of the water pipe abutting against the circumference of the top cover corresponds to the opening position of one end of the water inlet 2; it also includes a self-flushing mechanism, which is used for backwashing during the process of adjusting the positions of the treatment tanks 1 and 2.

[0006] Preferably, the self-flushing mechanism includes a water collecting chamber opened at the center of the top cover, an extension tube is vertically arranged at the bottom of the water collecting chamber, a groove is opened at the top of the base, a fixed transition tube is movably installed on the bottom inner wall of the groove, and the top of the fixed transition tube is connected to the bottom of the extension tube through a sealed bearing.

[0007] Preferably, a radially distributed water inlet 1 is opened on the circumference of the water collecting chamber, and the opening of the end of the water inlet 1 away from the water collecting chamber is distributed between the two water inlet 2 openings; an extended flushing pipe 1 and an extended flushing pipe 2 are respectively provided on both sides of the fixed transition pipe, and a one-way valve 2 and a one-way valve 3 are respectively provided on the extended flushing pipe 1 and the extended flushing pipe 2.

[0008] Preferably, two transition chambers are provided inside the rotating seat, and connecting holes are provided on the tops of the two transition chambers. The interiors of the two transition chambers are respectively connected with the interiors of processing tank two and processing tank one through the connecting holes. One end of the extending flushing pipe two away from the fixed transition pipe extends to the transition chamber located at the bottom of processing tank two, and one end of the extending flushing pipe one away from the fixed transition pipe extends to the transition chamber located at the bottom of processing tank one.

[0009] Preferably, both the treatment tank 1 and the treatment tank 2 are provided with a stirring mechanism for stirring the filtered sand and gravel during the self-flushing process.

[0010] Preferably, the stirring mechanism includes a rotating rod movably mounted on the top of a rotating seat, and a stirring wing is provided at one end of the rotating rod located in the processing tank one and the processing tank two. A driving motor three for driving the rotating rod to rotate is also provided on the rotating seat.

[0011] Preferably, the driving mechanism includes a movable seat installed at the bottom of the rotating seat, the movable seat is slidably connected to the top of the base, a driving gear is movably installed on the top of the base, the circumference of the driving gear is meshed with the circumference of the movable seat, and a driving motor is provided at the bottom of the base for driving the driving gear to rotate.

[0012] Preferably, the pre-filter mechanism includes a pre-filter shell installed on the top of the rotating circle, a conveying roller and an inclined conveying mesh belt are movably arranged inside the pre-filter shell, a slag discharge port is opened on one side wall of the pre-filter shell, a slag discharge mesh groove is arranged inside the slag discharge port, and a driving motor 2 for driving the conveying roller to rotate is arranged on the outer wall of the pre-filter shell.

[0013] Preferably, the outer wall of the conveyor mesh belt is movably provided with a plurality of inclined movable mesh plates, and the side surfaces of the movable mesh plates are connected to the outer wall of the conveyor mesh belt via support springs.

[0014] Preferably, a movable baffle with an arc-shaped structure is provided on one side of the movable mesh plate close to the supporting spring, a fixed baffle with an arc-shaped structure is provided on the outer wall of the conveyor mesh belt, the fixed baffle and the movable baffle are arranged alternately, and a toggle rod is provided on the top of one end of the slag discharge mesh slot located in the pre-filter shell.

[0015] The beneficial effects of the present invention are: During use, when there are many impurities accumulated in treatment tank one and need to be cleaned, the driving mechanism drives the rotating seat to rotate horizontally until the opening position of one end of the water pipe away from the delivery pump is aligned with the opening position of the second water inlet located on the top of treatment tank two. At this time, the wastewater flows from top to bottom in treatment tank two for filtering treatment, and when the positions of treatment tank one and treatment tank two are switched, the self-flushing mechanism backwashes the interior of treatment tank one, has an automatic backwashing function, and can quickly switch treatment tanks, thereby improving the efficiency of wastewater circulation treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of a wastewater circulation treatment device proposed in an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure of a wastewater circulation treatment device proposed in an embodiment of the present invention from a second perspective; Figure 3 A structural cross-sectional view of a top cover, a first treatment tank, a second treatment tank and a rotating seat in a wastewater circulation treatment device proposed in an embodiment of the present invention; Figure 4 A structural cross-sectional view of a pre-filtering mechanism in a wastewater circulation treatment device proposed in an embodiment of the present invention; Figure 5 for Figure 4 A magnified view of the local structure at point A in the middle; Figure 6 A schematic structural diagram of a top cover, a first treatment tank, a second treatment tank and a rotating seat in a wastewater circulation treatment device proposed in an embodiment of the present invention; Figure 7 This is a top structural sectional view of a top cover in a wastewater circulation treatment device proposed in an embodiment of the present invention.

[0017] In the figure: 1-base, 2-mounting frame, 3-driving mechanism, 31-movable seat, 32-driving gear, 33-driving motor 1, 4-rotating seat, 5-pre-filtering mechanism, 51-pre-filtering shell, 52-driving motor 2, 53-slag discharge port, 54-slag discharge net slot, 55-shovel rod, 56-conveyor mesh belt, 57-movable mesh plate, 58-movable baffle, 59-fixed baffle, 510-support spring, 511-conveyor roller, 6-water inlet pipe, 7-rotating circle, 8-self-flushing mechanism, 82-extension pipe, 83-water inlet 1, 84-water inlet 2, 85-water collecting chamber, 86-fixed transition pipe, 87-check valve 2, 88-extended flushing pipe 1, 89-check valve 3, 810-extended flushing pipe 2, 811-transition chamber, 812-connecting hole, 9-treatment tank 1, 10-treatment tank 2, 11-check valve 4, 12-drain pipe, 13-water outlet pipe, 14-check valve 5, 15-delivery pump, 16-water delivery pipe, 21-top cover, 22-agitation mechanism, 221-drive motor 3, 222-agitation side wing, 223-rotation rod, 23-controller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In one embodiment, referring to Figures 1 to 7A wastewater circulation treatment device comprises a base 1 and a controller 23, wherein a rotating seat 4 is movably provided on the top of the base 1, and a treatment tank 9 and a treatment tank 2 10 are provided on the top of the rotating seat 4, and the interiors of the treatment tanks 1 9 and 10 are filled with filtering sand and gravel, and the bottoms of the side walls of the treatment tanks 1 9 and 10 are provided with a water outlet pipe 13 and a one-way valve 5 14, and the tops of the side walls of the treatment tanks 1 9 and 10 are provided with a sewage pipe 12 and a one-way valve 4 11; the tops of the treatment tanks 2 10 and 10 are provided with a top cover 21 of the same cylindrical structure, and the side walls of both ends of the top cover 21 are provided with a through water inlet 2 84, and one end of the two water inlet 2 84 is respectively connected to the interior of the treatment tanks 1 9 and 10; the base 1 is provided with a driving mechanism 3, which is used to The rotating seat 4 is driven to rotate horizontally; a rotating circle 7 of an annular structure is installed on the top of the base 1 through the mounting frame 2, and the rotating circle 7 is sleeved on the circumference of the top cover 21; a pre-filtering mechanism 5 is arranged on the top of the rotating circle 7, and a water inlet pipe 6 is arranged on the top of the pre-filtering mechanism 5, and a delivery pump 15 and a water pipe 16 are arranged on the side of the pre-filtering mechanism 5, which are used to extract the pre-filtered wastewater in the pre-filtering mechanism 5; one end of the water pipe 16 away from the delivery pump 15 extends to the inside of the rotating circle 7, and one end of the water pipe 16 extending to the inside of the rotating circle 7 abuts against the circumference of the top cover 21, and the opening position of one end of the water pipe 16 abutting against the circumference of the top cover 21 corresponds to the opening position of one end of the water inlet 2 84; it also includes a self-flushing mechanism 8, which is used to backwash during the process of adjusting the positions of the treatment tank 1 9 and the treatment tank 2 10.

[0020] When in use, the pre-filtering mechanism 5 pre-filters the wastewater fed by the water inlet pipe 6, and the delivery pump 15 and the water delivery pipe 16 extract the pre-filtered wastewater in the pre-filtering mechanism 5, and the driving mechanism 3 drives the rotating seat 4 to rotate, thereby rotating and adjusting the positions of the top cover 21, the treatment tank 9 and the treatment tank 2 10. When the opening position of one end of the water delivery pipe 16 away from the delivery pump 15 is aligned with the opening position of the water inlet 2 84 located at the top of the treatment tank 9, the wastewater extracted by the delivery pump 15 is injected into the treatment tank 9 through the water delivery pipe 16 and the water inlet 2 84. At this time, the controller 23 controls the one-way valve four 11 to close and the one-way valve five 14 to open, and the wastewater is discharged from the treatment tank 9. The wastewater flows from top to bottom in the treatment tank 19, and is discharged through the outlet pipe 13 after being filtered by sand and gravel. When there are many impurities accumulated in the treatment tank 19 and need to be cleaned, the driving mechanism 3 drives the rotating seat 4 to rotate horizontally until the opening position of one end of the water pipe 16 away from the delivery pump 15 is aligned with the opening position of the water inlet 2 84 located at the top of the treatment tank 2 10. At this time, the wastewater flows from top to bottom in the treatment tank 2 10 for filtering treatment, and when the positions of the treatment tank 19 and the treatment tank 2 10 are switched, the self-flushing mechanism 8 backwashes the interior of the treatment tank 9, has an automatic backwashing function, and can quickly switch the treatment tanks to improve the efficiency of wastewater circulation treatment.

[0021] As a preferred embodiment of the present invention, the self-flushing mechanism 8 includes a water collecting chamber 85 opened at the center of the top cover 21, an extension pipe 82 is vertically arranged at the bottom of the water collecting chamber 85, a groove is opened at the top of the base 1, and a fixed transition pipe 86 is movably installed on the bottom inner wall of the groove, and the top end of the fixed transition pipe 86 is connected to the bottom of the extension pipe 82 through a sealed bearing.

[0022] As a preferred embodiment of the present invention, a radially distributed water inlet 83 is opened on the circumference of the water collecting chamber 85, and the opening of the end of the water inlet 83 away from the water collecting chamber 85 is distributed between the two water inlet 84 openings; an extended flushing pipe 1 88 and an extended flushing pipe 2 810 are respectively provided on both sides of the fixed transition pipe 86, and a one-way valve 2 87 and a one-way valve 3 89 are respectively provided on the extended flushing pipe 1 88 and the extended flushing pipe 2 810.

[0023] As a preferred embodiment of the present invention, two transition chambers 811 are provided inside the rotating seat 4, and connecting holes 812 are provided on the tops of the two transition chambers 811. The interiors of the two transition chambers 811 are respectively connected with the interiors of the processing tank 2 10 and the processing tank 1 9 through the connecting holes 812. The end of the extended flushing pipe 2 810 away from the fixed transition pipe 86 extends to the transition chamber 811 located at the bottom of the processing tank 2 10, and the end of the extended flushing pipe 1 88 away from the fixed transition pipe 86 extends to the transition chamber 811 located at the bottom of the processing tank 1 9.

[0024] As a preferred embodiment of the present invention, a stirring mechanism 22 is provided inside the processing tank 1 9 and the processing tank 2 10 for stirring the filtered sand and gravel during the self-flushing process. When it is necessary to clean the inside of the processing tank 1 9 or the processing tank 2 10 and switch the positions of the processing tank 1 9 and the processing tank 2 10, the controller 23 controls the stirring mechanism 22 located in the processing tank 1 9 or the processing tank 2 10 to open, and the stirring mechanism 22 stirs the filtered sand and gravel in the processing tank 1 9 or the processing tank 2 10, and opens the one-way valve 2 87, close the one-way valve three 89, or open the one-way valve three 89, close the one-way valve two 87, close the one-way valve five 14 installed on the treatment tank one 9 or the treatment tank two 10, open the one-way valve four 11 installed on the treatment tank one 9 or the treatment tank two 10, and during the horizontal rotation of the top cover 21, the opening interval of the end of the water pipe 16 away from the delivery pump 15 is aligned with the opening of the water inlet one 83, at this time, the wastewater pumped out by the delivery pump 15 is injected into the water collection chamber 85 through the water pipe 16 and the water inlet one 83, and the water collection chamber 85 The wastewater is injected into the bottom of the treatment tank 1 9 through the extension pipe 82, the fixed transition pipe 86 and the extension flushing pipe 1 88, or the wastewater in the water collecting chamber 85 is injected into the bottom of the treatment tank 2 10 through the extension pipe 82, the fixed transition pipe 86 and the extension flushing pipe 2 810. The wastewater flushes the sand and gravel in the treatment tank 1 9 or the treatment tank 2 10 from bottom to top, and the impurities cleaned by the stirring and friction of the filtered sand and gravel are flushed to the sewage pipe 12 for discharge, so as to realize the backwashing of the treatment tank 1 9 or the treatment tank 2 10, and the opening of the water delivery pipe 16 The opening of the water inlet 83 is aligned with the interval, that is, water is injected into the treatment tank 9 or the treatment tank 10 at intervals during the backwashing process, ensuring that during the water injection interval, the stirring mechanism 22 can effectively stir the filter sand and gravel, avoiding the situation where the friction between the filter sand and gravel is small when the water flows, resulting in the impurities on the surface of the filter sand and gravel cannot be effectively removed, ensuring that the impurities attached to the surface of the filter sand and gravel can be effectively removed during the stirring and friction process, that is, to achieve intermittent and multiple backwashing of the filter sand and gravel, thereby improving the cleaning effect of backwashing.

[0025] As a preferred embodiment of the present invention, the stirring mechanism 22 includes a rotating rod 223 movably mounted on the top of the rotating seat 4, and a stirring side wing 222 is provided at one end of the rotating rod 223 located in the processing tank 1 9 and the processing tank 2 10. The rotating seat 4 is also provided with a driving motor 3 221 for driving the rotating rod 223 to rotate. The driving motor 3 221 can be used to drive the rotating rod 223 and the stirring side wing 222 to rotate, thereby stirring the filtered sand and gravel in the processing tank 1 9 or the processing tank 2 10.

[0026] As a preferred embodiment of the present invention, the driving mechanism 3 includes a movable seat 31 installed at the bottom of the rotating seat 4, the movable seat 31 is slidably connected to the top of the base 1, a driving gear 32 is movably installed on the top of the base 1, the circumference of the driving gear 32 is meshed with the circumference of the movable seat 31, and a driving motor 33 for driving the driving gear 32 to rotate is provided at the bottom of the base 1. The driving motor 33 can be used to drive the driving gear 32 to rotate, and the rotating seat 4 can be driven to rotate horizontally through the meshing between the driving gear 32 and the movable seat 31.

[0027] As a preferred embodiment of the present invention, the pre-filter mechanism 5 includes a pre-filter shell 51 installed on the top of the rotating circle 7, and a conveying roller 511 and an inclined conveying mesh belt 56 are movably arranged inside the pre-filter shell 51. A slag discharge port 53 is opened on one side wall of the pre-filter shell 51, and a slag discharge mesh groove 54 is arranged inside the slag discharge port 53. The outer wall of the pre-filter shell 51 is provided with a driving motor 52 for driving the conveying roller 511 to rotate.

[0028] As a preferred embodiment of the present invention, the outer wall of the conveyor mesh belt 56 is movably provided with a plurality of inclined movable mesh plates 57 , and the side surfaces of the movable mesh plates 57 are connected to the outer wall of the conveyor mesh belt 56 via support springs 510 .

[0029] As a preferred embodiment of the present invention, a movable baffle 58 with an arc-shaped structure is provided on one side of the movable mesh plate 57 close to the support spring 510, and a fixed baffle 59 with an arc-shaped structure is provided on the outer wall of the conveying mesh belt 56. The fixed baffle 59 and the movable baffle 58 are arranged alternately with each other, and the movable mesh plate 57 swings when impacted by the water flow, thereby improving the filtering effect of the movable mesh plate 57. When the movable mesh plate 57 swings when impacted, the movable baffle 58 and the fixed baffle 59 shield the support spring 510 to prevent impurities from being stuck in the support spring 510 and affecting the swing of the movable mesh plate 57; the slag discharge mesh slot 54 is located inside the pre-filter housing 51 A toggle rod 55 is provided at the top of one end, and the waste water fed by the water inlet pipe 6 is flushed onto the conveyor mesh belt 56 and the movable mesh plate 57, and the movable mesh plate 57 and the conveyor mesh belt 56 filter the waste water. The driving motor 2 52 drives the conveyor roller 511 to rotate, and the impurities filtered on the movable mesh plate 57 and the conveyor mesh belt 56 fall on the slag discharge mesh groove 54 and are discharged. As the conveyor mesh belt 56 rotates, the movable mesh plate 57 contacts and staggers with the top end of the toggle rod 55, and the movable mesh plate 57 swings under the toggle action of the toggle rod 55 and the elastic force of the support spring 510, so that the impurities on the movable mesh plate 57 can effectively fall on the slag discharge mesh groove 54.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wastewater circulation treatment device, comprising a base (1) and a controller (23), characterized in that: A rotating seat (4) is movably provided on the top of the base (1), a treatment tank 1 (9) and a treatment tank 2 (10) are provided on the top of the rotating seat (4), the interiors of the treatment tank 1 (9) and the treatment tank 2 (10) are filled with filtered sand and gravel, a water outlet pipe (13) and a one-way valve 5 (14) are provided on the bottom of the side walls of the treatment tank 1 (9) and the treatment tank 2 (10), and a sewage discharge pipe (12) and a one-way valve 4 (11) are provided on the top of the side walls of the treatment tank 1 (9) and the treatment tank 2 (10); The top of the treatment tank 2 (10) and the treatment tank 1 (9) are provided with a top cover (21) of the same cylindrical structure, and the side walls at both ends of the top cover (21) are provided with a through water inlet 2 (84), and one end of the two water inlets 2 (84) is respectively connected to the interior of the treatment tank 1 (9) and the treatment tank 2 (10); The base (1) is provided with a driving mechanism (3) for driving the rotating base (4) to rotate horizontally; A rotating ring (7) with an annular structure is installed on the top of the base (1) via a mounting frame (2), and the rotating ring (7) is sleeved on the circumference of the top cover (21); A pre-filtering mechanism (5) is arranged on the top of the rotating circle (7), a water inlet pipe (6) is arranged on the top of the pre-filtering mechanism (5), and a delivery pump (15) and a water delivery pipe (16) are arranged on the side of the pre-filtering mechanism (5) for extracting the waste water after pre-filtering in the pre-filtering mechanism (5); One end of the water delivery pipe (16) away from the delivery pump (15) extends to the inside of the rotating circle (7), and the end of the water delivery pipe (16) extending to the inside of the rotating circle (7) abuts against the circumference of the top cover (21), and the opening position of the end of the water delivery pipe (16) abutting against the circumference of the top cover (21) corresponds to the opening position of one end of the second water inlet (84); It also includes a self-flushing mechanism (8) for performing backwashing during the process of adjusting the positions of the treatment tank one (9) and the treatment tank two (10).

2. A wastewater circulation treatment equipment according to claim 1, characterized in that: The self-flushing mechanism (8) comprises a water collecting chamber (85) opened at the center of the top cover (21), an extension pipe (82) being vertically arranged at the bottom of the water collecting chamber (85), a groove being opened at the top of the base (1), a fixed transition pipe (86) being movably mounted on the inner wall of the bottom of the groove, and the top of the fixed transition pipe (86) is connected to the bottom of the extension pipe (82) via a sealed bearing.

3. A wastewater circulation treatment equipment according to claim 2, characterized in that: The circumference of the water collection chamber (85) is provided with radially distributed water inlet ports 1 (83), and the opening of one end of the water inlet port 1 (83) away from the water collection chamber (85) is distributed between the openings of the two water inlet ports 2 (84); An extended flushing pipe 1 (88) and an extended flushing pipe 2 (810) are respectively arranged on both sides of the fixed transition pipe (86), and a check valve 2 (87) and a check valve 3 (89) are respectively arranged on the extended flushing pipe 1 (88) and the extended flushing pipe 2 (810).

4. A wastewater circulation treatment equipment according to claim 3, characterized in that: The rotating seat (4) has two transition chambers (811) formed inside, and the tops of the two transition chambers (811) are each provided with a connecting hole (812). The interiors of the two transition chambers (811) are respectively connected to the interiors of the second processing tank (10) and the first processing tank (9) through the connecting holes (812). The end of the second extending flushing pipe (810) away from the fixed transition pipe (86) extends to the transition chamber (811) located at the bottom of the second processing tank (10), and the end of the first extending flushing pipe (88) away from the fixed transition pipe (86) extends to the transition chamber (811) located at the bottom of the first processing tank (9).

5. A wastewater circulation treatment equipment according to claim 4, characterized in that: The processing tank 1 (9) and the processing tank 2 (10) are both provided with a stirring mechanism (22) for stirring the filtered sand and gravel during the self-flushing process.

6. A wastewater circulation treatment equipment according to claim 5, characterized in that: The stirring mechanism (22) comprises a rotating rod (223) movably mounted on the top of the rotating seat (4); one end of the rotating rod (223) located inside the first processing tank (9) and the second processing tank (10) is provided with a stirring wing (222); and a driving motor (221) for driving the rotating rod (223) to rotate is also provided on the rotating seat (4).

7. The wastewater circulation treatment equipment according to claim 1, characterized in that: The driving mechanism (3) comprises a movable seat (31) mounted at the bottom of the rotating seat (4), the movable seat (31) being slidably connected to the top of the base (1), a driving gear (32) being movably mounted on the top of the base (1), the circumference of the driving gear (32) being meshed with the circumference of the movable seat (31), and a driving motor (33) for driving the driving gear (32) to rotate is provided at the bottom of the base (1).

8. The wastewater circulation treatment equipment according to claim 1, characterized in that: The pre-filtering mechanism (5) comprises a pre-filtering housing (51) mounted on the top of a rotating circle (7); a conveying roller (511) and an inclined conveying mesh belt (56) are movably arranged inside the pre-filtering housing (51); a slag discharge port (53) is provided on one side wall of the pre-filtering housing (51); a slag discharge mesh groove (54) is provided inside the slag discharge port (53); and a second driving motor (52) for driving the conveying roller (511) to rotate is provided on the outer wall of the pre-filtering housing (51).

9. A wastewater circulation treatment equipment according to claim 8, characterized in that: The outer wall of the conveyor mesh belt (56) is movably provided with a plurality of inclined movable mesh plates (57), and the side surfaces of the movable mesh plates (57) are connected to the outer wall of the conveyor mesh belt (56) via support springs (510).

10. The wastewater circulation treatment equipment according to claim 9, characterized in that: A movable baffle plate (58) with an arc structure is arranged on one side of the movable mesh plate (57) close to the support spring (510), and a fixed baffle plate (59) with an arc structure is arranged on the outer wall of the conveying mesh belt (56), and the fixed baffle plate (59) and the movable baffle plate (58) are arranged alternately with each other; A toggle rod (55) is provided at the top of one end of the slag discharge net slot (54) located inside the pre-filter housing (51).

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