Reciprocating extrusion type algae-water separation device

Abstract

A rear pressing plate, a front pressing plate and a middle pressing plate are slidably arranged in a separation box of the reciprocating extrusion type algae-water separation device, a first water inlet hole and a second water inlet hole are formed in a top plate of the separation box, the middle pressing plate is connected with a power assembly, and the power assembly drives the middle pressing plate to forwards push algae to move; water in the algae is squeezed out under extrusion of the middle pressing plate and the front pressing plate, the algae with the water squeezed out are pushed into the second algae containing box at the same time, the power assembly drives the middle pressing plate to push the algae backwards to move, and water in the algae is squeezed out under extrusion of the middle pressing plate and the rear pressing plate; meanwhile, the algae of which the water is squeezed out are pushed into the first algae containing box. The algae-water separation device is convenient to operate, the algae-water separation efficiency and separation effect are greatly improved, and the technical problems that an existing separation device is difficult to operate, low in separation efficiency and poor in separation effect are effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of algae-water separation, and specifically relates to a reciprocating extrusion type algae-water separation device. Background Art

[0002] Most of the cross-basin water transfers are connected through newly built channels. However, the ecosystem of the newly built channels takes a certain amount of time to reach a balanced and stable state. Therefore, there is a risk of abnormal proliferation of epiphytic algae on the channel slopes. If the epiphytic algae abnormally proliferate, it will affect the water supply safety, water quality safety, and engineering safety of the channels. Therefore, cleaning the epiphytic algae attached to the slopes and eliminating the potential risk hazards that the abnormal proliferation of epiphytic algae may bring to the channels have become technical problems that need to be solved urgently.

[0003] At present, in the domestic and foreign technologies for removing epiphytic algae on slopes, in order to avoid the problem of secondary pollution to water quality, physical removal methods are often used, mainly including manual cleaning, mechanical friction cleaning, etc. The algae-water after cleaning needs to be separated. However, the existing algae-water separation devices have low separation efficiency and poor separation effect. Therefore, a reciprocating extrusion type algae-water separation device with good separation effect, high separation efficiency, and convenient operation is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a reciprocating extrusion type algae-water separation device with good separation effect, high separation efficiency, and convenient operation.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A reciprocating extrusion type algae-water separation device, including a separation box, a first algae loading box, a first water filtering funnel, a second water filtering funnel, and a second algae loading box. The bottom of the separation box is open. The first algae loading box and the second algae loading box have the same structure and are open at the top. The first water filtering funnel and the second water filtering funnel have the same structure and are open at the top. The first algae loading box, the first water filtering funnel, the second water filtering funnel, and the second algae loading box are arranged in sequence from back to front at the bottom of the separation box. A first filter screen plate is provided on the open top of the first water filtering funnel, and a second filter screen plate is provided on the open top of the second water filtering funnel; A rear pressing plate, an intermediate pressing plate, and a front pressing plate are slidably arranged in sequence from back to front in the separation box. The rear pressing plate is connected to the inner wall of the rear side plate of the separation box through at least two first damping springs symmetrically arranged up and down. The front pressing plate is connected to the inner wall of the front side plate of the separation box through at least two second damping springs symmetrically arranged up and down. Symmetric first water inlet holes and second water inlet holes are opened on the top plate of the separation box. The first water inlet hole is connected to a first sewage inlet branch pipe, and the second water inlet hole is connected to a second sewage inlet branch pipe. The outlets of the first sewage inlet branch pipe and the second sewage inlet branch pipe are both connected to a sewage inlet main pipe. A two-position three-way electromagnetic valve is provided on the sewage inlet main pipe. The intermediate pressing plate is connected to the described power assembly. When the first damping spring is in the natural elongation state, the rear pressure plate is located on the first filter screen plate. When the second damping spring is in the natural elongation state, the front pressure plate is located on the second filter screen plate.

[0006] Long strip through holes in the front-rear direction are provided at the middle positions of the left and right side plates of the separation box. An upper guide plate and a lower guide plate are respectively provided on the upper and lower sides of the long strip through holes. Both the upper guide plate and the lower guide plate are provided on the outer surfaces of the left and right side plates of the separation box. Power assemblies are provided on both the left and right sides of the middle pressure plate. The power assembly includes a hydraulic drive motor. The output shaft of the hydraulic drive motor extends between the upper guide plate and the lower guide plate through the long strip through hole. A rack and a lower wheel groove are provided on the lower guide plate along the length direction. An upper wheel groove corresponding to the lower wheel groove is provided on the upper guide plate along the length direction. A gear and a guide wheel are provided on the output shaft of the hydraulic drive motor. The gear meshes with the rack. The bottom of the guide wheel is located in the lower wheel groove, and the top of the guide wheel is located in the upper wheel groove.

[0007] The bottoms of the rear pressure plate and the front pressure plate are provided with a first wedge portion and a second wedge portion. The first wedge portion includes a first wedge surface that is lower in the front and higher in the rear. The second wedge portion includes a second wedge surface that is higher in the front and lower in the rear. First mounting boxes and second mounting boxes are provided on the left and right side walls in both the first algae loading box and the second algae loading box. A first vertical baffle is installed in the first mounting box. A third wedge portion corresponding to the first wedge portion is provided at the top of the first vertical baffle. The third wedge portion includes a third wedge surface that is lower in the front and higher in the rear. The bottom of the first vertical baffle is connected to the bottom of the first mounting box through a first return spring. A second vertical baffle is installed in the second mounting box. A fourth wedge portion corresponding to the second wedge portion is provided at the top of the second vertical baffle. The fourth wedge portion includes a fourth wedge surface that is higher in the front and lower in the rear. The bottom of the second vertical baffle is connected to the bottom of the second mounting box through a second return spring.

[0008] A first mounting hole that penetrates through the front and rear is provided on the first vertical baffle. The bottom surface of the first mounting hole is a fifth wedge surface that is higher in the front and lower in the rear. A first hydraulic telescopic cylinder is provided on the rear inner wall of the first mounting box. A first wedge block is provided at the front end of the first hydraulic telescopic cylinder. The front side surface of the first wedge block is a sixth wedge surface that is higher in the front and lower in the rear. The length direction of the first hydraulic telescopic cylinder corresponds to the first mounting hole. A second mounting hole that penetrates through the front and rear is provided on the second vertical baffle. The bottom surface of the second mounting hole is a seventh wedge surface that is lower in the front and higher in the rear. A second hydraulic telescopic cylinder is provided on the front inner wall of the second mounting box. A second wedge block is provided at the front end of the second hydraulic telescopic cylinder. The rear side surface of the second wedge block is an eighth wedge surface that is higher in the front and lower in the rear. The length direction of the second hydraulic telescopic cylinder corresponds to the second mounting hole. The tops of the first installation box and the second installation box are respectively equipped with a first cover box plate and a second cover box plate. The top walls of the first cover box plate and the second cover box plate are flush with the top walls of the first algae installation box and the second algae installation box respectively. A first through hole corresponding to the first vertical baffle is provided on the first cover box plate, and a second through hole corresponding to the second vertical baffle is provided on the second cover box plate.

[0009] In the normal state, the first return spring and the second return spring support the first wedge portion and the second wedge portion of the first vertical baffle and the second vertical baffle to protrude out of the first through hole and the second through hole; On both the left and right sides of the first vertical baffle and the second vertical baffle, extension sliding plates are arranged vertically, and on the left and right inner walls of the first installation box and the second installation box, extension sliding grooves corresponding to the extension sliding plates are provided.

[0010] The intermediate pressing plate includes a first pushing plate portion, a second pushing plate portion and a pushing plate connecting member. The front end of the pushing plate connecting member is connected to the second pushing plate portion, and the rear end of the pushing plate connecting member is connected to the first pushing plate portion. The hydraulic drive motor is arranged between the first pushing plate portion and the second pushing plate portion.

[0011] The bottoms of the first water filtering funnel and the second water filtering funnel are both connected to an external water tank through water filtering pipes.

[0012] The bottom edge of the longitudinal section of the long strip through hole slopes downward from outside to inside.

[0013] Algae box doors are provided on both the first algae installation box and the second algae installation box.

[0014] Sliding grooves are arranged along the front-back direction at the four corners inside the separation box, and sliding blocks corresponding to the sliding grooves are provided on the front and back sides of the rear pressing plate, the intermediate pressing plate and the front pressing plate.

[0015] In this application, the forward and reverse rotations of the hydraulic drive motor drive the intermediate pressing plate to move back and forth, pushing the algae on both sides of it, so that the water in the algae is squeezed out and sent into the algae installation box, effectively improving the algae-water separation efficiency and separation effect. Further, the operation of the present invention is convenient, greatly improving the algae-water separation efficiency and separation effect, and effectively solving the technical problems of difficult operation, low separation efficiency and poor separation effect of the existing separation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the algae-water separation device of the present invention.

[0017] Figure 2 is a front view of the algae-water separation device of the present invention.

[0018] Figure 3 is one of the cross-sectional views of the algae-water separation device of the present invention.

[0019] Figure 4It is the top view of the algal water separation device of the present invention.

[0020] Figure 5 It is the second sectional view of the algal water separation device of the present invention.

[0021] Figure 6 It is the side view of the algal water separation device of the present invention.

[0022] Figure 7 It is Figure 6 The sectional view of the B-B plane in

[0023] Figure 8 It is the schematic three-dimensional structure diagram of the algal water separation device of the present invention except for the separation tank.

[0024] Figure 9 It is Figure 8 The front view of

[0025] Figure 10 It is Figure 8 The top view of

[0026] Figure 11 It is Figure 8 The side view of Specific embodiments

[0027] As Figures 1-11 shown, the reciprocating extrusion type algal water separation device, the separation device includes a separation tank 44, a first algal loading tank 45, a first water filtering funnel 46, a second water filtering funnel 47 and a second algal loading tank 96. The bottom of the separation tank 44 is open. The first algal loading tank 45 and the second algal loading tank 96 have the same structure and are both open at the top. The first water filtering funnel 46 and the second water filtering funnel 47 have the same structure and are both open at the top. The first algal loading tank 45, the first water filtering funnel 46, the second water filtering funnel 47 and the second algal loading tank 96 are sequentially arranged at the bottom of the separation tank 44 from back to front. A first filter screen plate 48 is arranged on the open top of the first water filtering funnel 46, and a second filter screen plate 49 is arranged on the open top of the second water filtering funnel 47; A rear pressing plate 50, an intermediate pressing plate 51 and a front pressing plate 52 are sequentially and slidably arranged in the separation tank 44 from back to front. The rear pressing plate 50 is connected to the inner wall of the rear side plate of the separation tank 44 through at least two first damping springs 53 symmetrically arranged up and down. The front pressing plate 52 is connected to the inner wall of the front side plate of the separation tank 44 through at least two second damping springs 54 symmetrically arranged up and down. Symmetric first water inlet holes 55 and second water inlet holes 56 are opened on the top plate of the separation tank 44. As Figure 5As shown (the first sewage inlet branch pipe 101, the second sewage inlet branch pipe 102, the main sewage inlet pipe 103, and the two-position three-way solenoid valve 104 are not shown in other attached drawings), the first water inlet hole 55 is connected to the first sewage inlet branch pipe 101, the second water inlet hole 56 is connected to the second sewage inlet branch pipe 102. The outlets of the first sewage inlet branch pipe 101 and the second sewage inlet branch pipe 102 are both connected to a main sewage inlet pipe 103, and a two-position three-way solenoid valve 104 is provided on the main sewage inlet pipe. The middle pressing plate 51 is connected to the said power assembly. When the first damping spring 53 is in the natural elongation state, the rear pressing plate 50 is located on the first filter plate 48. When the second damping spring 54 is in the natural elongation state, the front pressing plate 52 is located on the second filter plate 49.

[0028] Long strip through holes 57 in the front-back direction are provided at the middle positions of the left and right side plates of the separation box 44. An upper guide plate 58 and a lower guide plate 59 are respectively provided on the upper and lower sides of the long strip through hole 57. The upper guide plate 58 and the lower guide plate 59 are both provided on the outer surfaces of the left and right side plates of the separation box 44. Power assemblies are provided on both the left and right sides of the middle pressing plate 51. The power assembly includes a hydraulic drive motor. The output shaft of the hydraulic drive motor extends between the upper guide plate 58 and the lower guide plate 59 through the long strip through hole 57. A rack 62 and a lower wheel groove are provided on the lower guide plate 59 along the length direction. An upper wheel groove corresponding to the lower wheel groove is provided on the upper guide plate 58 along the length direction. A gear 60 and a guide wheel 61 are provided on the output shaft of the hydraulic drive motor. The gear 60 meshes with the rack 62. The bottom of the guide wheel 61 is located in the lower wheel groove, and the top of the guide wheel 61 is located in the upper wheel groove. The bottoms of the rear pressing plate 50 and the front pressing plate 52 are provided with a first wedge part and a second wedge part. The first wedge part includes a first wedge surface with a lower front and a higher rear. The second wedge part includes a second wedge surface with a higher front and a lower rear. First mounting boxes 65 and second mounting boxes 66 are provided on the left and right side walls in the first algae loading box 45 and the second algae loading box 96. A first vertical baffle 67 is installed in the first mounting box 65. A third wedge part corresponding to the first wedge part is provided at the top of the first vertical baffle 67. The third wedge part includes a third wedge surface with a lower front and a higher rear. The bottom of the first vertical baffle 67 is connected to the bottom of the first mounting box 65 through a first return spring 63. A second vertical baffle 68 is installed in the second mounting box 66. A fourth wedge part corresponding to the second wedge part is provided at the top of the second vertical baffle 68. The fourth wedge part includes a fourth wedge surface with a higher front and a lower rear. The bottom of the second vertical baffle 68 is connected to the bottom of the second mounting box 66 through a second return spring 64. A first vertical baffle 67 is provided with a first mounting hole penetrating through the front and rear. A first wedge block is installed in the first mounting hole. The first wedge block includes a fifth wedge surface with a higher front and a lower rear. A first hydraulic telescopic cylinder 69 is provided on the rear inner wall of the first mounting box 65. A second wedge block is provided at the front end of the first hydraulic telescopic cylinder 69. The second wedge block includes a sixth wedge surface with a higher front and a lower rear. The length direction of the first hydraulic telescopic cylinder 69 corresponds to the first mounting hole; A second vertical baffle 68 is provided with a second mounting hole penetrating through the front and rear. A third wedge block is installed in the second mounting hole. The third wedge block includes a seventh wedge surface with a lower front and a higher rear. A second hydraulic telescopic cylinder 70 is provided on the rear inner wall of the second mounting box 66. A fourth wedge block is provided at the front end of the second hydraulic telescopic cylinder 70. The fourth wedge block includes an eighth wedge surface with a higher front and a lower rear. The length direction of the second hydraulic telescopic cylinder 70 corresponds to the second mounting hole; The tops of the first mounting box 65 and the second mounting box 66 are respectively installed with a first cover box plate and a second cover box plate. The top walls of the first cover box plate and the second cover box plate are respectively flush with the top walls of the first algae loading box 45 and the second algae loading box 96. A first through hole corresponding to the first vertical baffle 67 is provided on the first cover box plate. A second through hole corresponding to the second vertical baffle 68 is provided on the second cover box plate; The bottoms of the first water filtering funnel 46 and the second water filtering funnel 47 are both connected to an external water tank through water filtering pipes. An irrigation pump can also be provided in the first water filtering funnel 46 and the second water filtering funnel 47. The irrigation pump is connected with a plurality of greening sprinkler heads through irrigation pipes. Sliding grooves 71 are arranged along the front-rear direction at the four corners inside the separation box 44. Sliding blocks 72 corresponding to the sliding grooves 71 are provided on the front and rear sides of the rear pressing plate 50, the middle pressing plate 51 and the front pressing plate 52. Algae box doors are provided on both the first algae loading box 45 and the second algae loading box 96. When the algae loading box is full or the algae removal work is completed, the algae are taken out through the algae box doors for the next use. The bottom edge of the longitudinal section of the long strip through hole 57 slopes downward from the outside to the inside. When the algae water is transported into the separation box 44, there will be a phenomenon of sewage splashing. The downward slope of the bottom edge of the longitudinal section of the long strip through hole 57 from the outside to the inside can block the sewage inside the separation box 44. If some sewage splashes out, it will fall into the lower wheel groove. A water discharge hole is provided on the lower wheel groove. As Figure 3 shown, the water discharge hole is connected to the first water filtering funnel 46 or the second water filtering funnel 47 through a connecting pipe 97 (the connecting pipe 97 is not shown in other figures), so that the sewage can return to the water filtering funnel again. In addition, a water blocking plate 98 is provided between the lower wheel groove and the rack 62 and between the upper wheel groove and the rack 62 (the water blocking plate 98 is only shown in Figure 3As shown in [figure number not provided] (other attached figures are not shown). The hydraulic drive motor, the first hydraulic telescopic cylinder 69, and the second hydraulic telescopic cylinder 70 of this application are all signal-connected to a controller, and the opening and closing of each component are controlled by the controller. During specific operations: (1) Feed the algae-water mixed slurry to the rear side of the intermediate pressing plate 51 inside the separation device to first naturally filter the sewage in the algae-water mixed slurry. Specifically, in the initial state, the intermediate pressing plate 51 is located at the middle position in the front-rear direction of the separation tank 44. The two-way three-way solenoid valve 104 is controlled to connect the main sewage inlet pipe 103 with the first sewage inlet branch pipe 101. The algae-water mixed slurry passes through the main sewage inlet pipe 103 and the first sewage inlet branch pipe 101 and falls onto the rear side of the intermediate pressing plate 51 through the first water inlet hole 55. The sewage in the algae-water mixed slurry enters the first water filtering funnel 46 through the filtration of the first filter plate 48 under the action of gravity. (2) When the liquid level of the algae-water mixed liquid reaches a certain height, stop feeding the algae-water mixed liquid to the rear side of the intermediate pressing plate 51, and continuously feed the algae-water mixed liquid to the front side of the intermediate pressing plate 51. At the same time, the power assembly in the separation device drives the intermediate pressing plate 51 to move backward, squeezing out the sewage in the algae on the rear side of the intermediate pressing plate 51 and sending the algae to the first algae loading tank 45. Specifically, it includes the following sub-steps: ① The two-way three-way solenoid valve 104 is controlled to connect the main sewage inlet pipe 103 with the second sewage inlet branch pipe 102. The algae-water mixed slurry passes through the main sewage inlet pipe 103 and the second sewage inlet branch pipe 102 and falls onto the front side of the intermediate pressing plate 51 through the second water inlet hole 56. At the same time, the two hydraulic drive motors rotate forward, synchronously driving the gears 60 on the same side to move backward on the racks 62. The intermediate pressing plate 51 pushes the algae on the first water filtering funnel 46 to move backward, so that the algae are squeezed by the intermediate pressing plate 51 and the rear pressing plate 50. As the first damping spring 53 is compressed, the extrusion force on the algae becomes greater and greater, and the water contained in the algae will still be squeezed out. The sewage falls onto the diversion inclined plate 99 at the bottom of the first algae loading tank 45 and is collected at the water outlet 100 and discharged from the first algae loading tank 45. ② The intermediate pressing plate 51 continues to move backward, pushing the rear pressing plate 50 to continuously move backward. During the backward movement of the rear pressing plate 50, under the action of the first wedge-shaped part and the third wedge-shaped part, the first vertical baffle 67 moves downward to compress the first return spring 63 until the rear pressing plate 50 moves to the rear side of the first vertical baffle 67. At this time, the first vertical baffle 67 returns to its original position upward under the action of the first return spring 63. ③ Then the hydraulic drive motor rotates in the reverse direction, and the hydraulic drive motor drives the intermediate pressing plate 51 to move forward. The rear pressing plate 50 is blocked by the first vertical baffle 67, and the algae between the intermediate pressing plate 51 and the rear pressing plate 50 are no longer under extrusion force and naturally fall into the first algae loading tank 45.

[0029] (3) The power assembly drives the intermediate pressing plate 51 to move forward. When the intermediate pressing plate 51 moves to its original position, the conveyance of the algae-water mixture to the front side of the intermediate pressing plate 51 stops, and the conveyance of the algae-water mixture to the rear side of the intermediate pressing plate 51 continues. The intermediate pressing plate 51 continues to move forward, squeezing out the sewage in the algae on the front side of the intermediate pressing plate 51 and sending the algae into the second algae storage tank 96. Specifically, it includes the following sub-steps: ① The two hydraulic drive motors rotate in opposite directions, synchronously driving the gears 60 on the same side to move forward on the racks 62, so that the intermediate pressing plate 51 continues to move forward. When the intermediate pressing plate 51 moves to its original position, the two-position three-way solenoid valve 104 controls the main sewage inlet pipe 103 to communicate with the first sewage inlet branch pipe 101 again. The algae-water mixed slurry passes through the main sewage inlet pipe 103 and the first sewage inlet branch pipe 101 and falls onto the front side of the intermediate pressing plate 51 through the first water inlet hole 55. At the same time, the hydraulic drive motor continuously drives the intermediate pressing plate 51 to move forward, so that the algae are squeezed by the intermediate pressing plate 51 and the front pressing plate 52. As the second damping spring 54 is compressed, the extrusion force on the algae becomes greater and greater, and the water contained in the algae will still be squeezed out. The sewage falls onto the diversion inclined plate 99 at the bottom of the second algae storage tank 96 and converges to the water outlet 100 to discharge from the second algae storage tank 96. ② The intermediate pressing plate 51 continues to move forward, pushing the front pressing plate 52 to move forward continuously. During the forward movement of the front pressing plate 52, under the action of the second wedge part and the fourth wedge part, the second vertical baffle 68 moves downward to compress the second return spring 64 until the front pressing plate 52 moves to the front side of the second vertical baffle 68. At this time, the second vertical baffle 68 returns to its original position upward under the action of the second return spring 64. ③ Then the hydraulic motor rotates forward, and the hydraulic drive motor drives the intermediate pressing plate 51 to move backward while the front pressing plate 52 is blocked by the second vertical baffle 68. The algae between the intermediate pressing plate 51 and the front pressing plate 52 are no longer under extrusion force and naturally fall into the second algae storage tank 96.

[0030] While the hydraulic drive motor drives the intermediate pressing plate 51 to move forward and the rear pressing plate 50 is blocked by the first vertical baffle 67, the first hydraulic telescopic cylinder 69 pushes the second wedge block 108 to move forward. The second wedge block 108 presses down the seventh wedge surface of the first mounting hole 105 to make the first vertical baffle 67 move downward again. The rear side of the upper end of the first vertical baffle 67 disengages from the front side of the lower end of the rear pressing plate 50, and the rear pressing plate 50 slowly returns to its original position forward under the action of the first damping spring 53. While the intermediate pressing plate 51 moves backward and the front pressing plate 52 is blocked by the second vertical baffle 68, the second hydraulic telescopic cylinder 70 extends, pushing the fourth wedge block to move backward. The fourth wedge block presses down the third wedge block to make the second vertical baffle 68 move downward again. The front pressing plate 52 slowly returns to its original position backward under the action of the second damping spring 54. (4)Continuously repeat steps (2) and (3) until the first algae loading tank 45 and the second algae loading tank 96 are filled with algae. After the algae loading tank is filled with algae, take out the algae in the tank. After taking out the algae, continue to repeat steps (2) and (3) until the entire algae-water separation is completed.

[0031] The algae-water separation device of the present invention drives the middle pressing plate to reciprocate back and forth through the forward and reverse rotation of the hydraulic drive motor, pushing the algae on both sides of it, so that the water in the algae is squeezed out and sent into the algae loading tank, effectively improving the algae-water separation efficiency and separation effect. In addition, the operation of the present invention is convenient, simplifies the algae-water separation process, greatly improves the algae-water separation efficiency and separation effect, and effectively solves the technical problems of difficult operation, low separation efficiency and poor separation effect of the existing separation devices.

[0032] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; still can modify the present invention or make equivalent replacements, and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. Reciprocating extrusion type algae-water separation device, characterized in that: It comprises a separation box, a first algae box, a first water filtering funnel, a second water filtering funnel and a second algae box, the separation box has an open bottom, the first algae box and the second algae box have the same structure and are both open at the top, the first water filtering funnel and the second water filtering funnel have the same structure and are both open at the top, the first algae box, the first water filtering funnel, the second water filtering funnel and the second algae box are sequentially arranged at the bottom of the separation box from back to front, the first water filtering funnel is provided with a first filter plate on the open top, and the second water filtering funnel is provided with a second filter plate on the open top; A rear pressure plate, an intermediate pressure plate and a front pressure plate are sequentially slidably arranged in the separation box from the back to the front, the rear pressure plate is connected to the inner wall of the rear side plate of the separation box through at least two first damping springs symmetrically arranged up and down, and the front pressure plate is connected to the inner wall of the front side plate of the separation box through at least two second damping springs symmetrically arranged up and down, and a first water inlet hole and a second water inlet hole symmetrically arranged up and down are provided on the top plate of the separation box, the first water inlet hole is connected to a first sewage inlet branch pipe, and the second water inlet hole is connected to a second sewage inlet branch pipe, and the outlets of the first sewage inlet branch pipe and the second sewage inlet branch pipe are both connected to a sewage inlet main pipe, and a two-position three-way solenoid valve is arranged on the sewage inlet main pipe, and the intermediate pressure plate is connected to the power assembly. When the first damping spring is in a naturally extended state, the rear pressure plate is located on the first filter plate, and when the second damping spring is in a naturally extended state, the front pressure plate is located on the second filter plate.

2. The reciprocating extrusion algae-water separation device according to claim 1, characterized in that: A long through hole along the front-to-back direction is arranged in the middle of the left and right side plates of the separation box, and an upper guide plate and a lower guide plate are arranged on the upper and lower sides of the long through hole respectively, and the upper guide plate and the lower guide plate are arranged on the outer surfaces of the left and right side plates of the separation box; Power components are arranged on the left and right sides of the middle pressure plate, and the power components include a hydraulic drive motor. The output shaft of the hydraulic drive motor extends to between the upper guide plate and the lower guide plate through a long through hole. A rack and a lower wheel groove are arranged on the upper length direction of the lower guide plate, and an upper wheel groove corresponding to the lower wheel groove is arranged on the upper length direction of the upper guide plate. A gear and a guide wheel are arranged on the output shaft of the hydraulic drive motor, and the gear is meshed with the rack. The bottom of the guide wheel is located in the lower wheel groove, and the top of the guide wheel is located in the upper wheel groove.

3. The reciprocating extrusion algae-water separation device according to claim 2, characterized in that: A first wedge-shaped portion and a second wedge-shaped portion are provided at the bottom of the rear pressure plate and the front pressure plate, the first wedge-shaped portion includes a first wedge-shaped surface which is low in front and high in back, the second wedge-shaped portion includes a second wedge-shaped surface which is high in front and low in back, the first algae filling box and the second algae filling box are provided on the left and right side walls, the first installation box is provided with a first vertical baffle installed in the first installation box, the top of the first vertical baffle is provided with a third wedge-shaped portion corresponding to the first wedge-shaped portion, the third wedge-shaped portion includes a third wedge-shaped surface which is low in front and high in back, the bottom of the first vertical baffle is connected to the bottom of the first installation box through a first return spring, the second vertical baffle is installed in the second installation box, the top of the second vertical baffle is provided with a fourth wedge-shaped portion corresponding to the second wedge-shaped portion, the fourth wedge-shaped portion includes a fourth wedge-shaped surface which is high in front and low in back, and the bottom of the second vertical baffle is connected to the bottom of the second installation box through a second return spring.

4. The reciprocating extrusion algae-water separation device according to claim 3, characterized in that: A first mounting hole is provided on the first vertical baffle plate, the bottom surface of the first mounting hole is a fifth wedge-shaped surface which is higher in front and lower in back, a first hydraulic telescopic oil cylinder is provided on the inner wall of the rear side of the first mounting box, a first wedge-shaped block is provided at the front end of the first hydraulic telescopic oil cylinder, the front side surface of the first wedge-shaped block is a sixth wedge-shaped surface which is higher in front and lower in back, and the length direction of the first hydraulic telescopic oil cylinder corresponds to the first mounting hole; A second mounting hole is provided on the second vertical baffle plate, which is through from front to back, and the bottom surface of the second mounting hole is a seventh wedge-shaped surface which is low in front and high in back. A second hydraulic telescopic oil cylinder is provided on the front inner wall of the second mounting box, and a second wedge-shaped block is provided at the front end of the second hydraulic telescopic oil cylinder, and the rear side surface of the second wedge-shaped block is an eighth wedge-shaped surface which is high in front and low in back. The length direction of the second hydraulic telescopic oil cylinder corresponds to the second mounting hole. The first installation box and the second installation box are respectively installed with the first box cover plate and the second box cover plate on the top, the top walls of the first box cover plate and the second box cover plate are flush with the top walls of the first algae box and the second algae box respectively, the first box cover plate is provided with a first through hole corresponding to the first vertical baffle plate, and the second box cover plate is provided with a second through hole corresponding to the second vertical baffle plate.

5. The reciprocating extrusion algae-water separation device according to claim 4, characterized in that: The first return spring and the second return spring support the first wedge-shaped portion and the second wedge-shaped portion of the first vertical baffle and the second vertical baffle to extend out of the first through hole and the second through hole in a normal state; Extension slide plates are vertically arranged on both left and right sides of the first vertical baffle and the second vertical baffle, and extension slide grooves corresponding to the extension slide plates are arranged on both left and right inner walls of the first installation box and the second installation box.

6. The reciprocating extrusion algae-water separation device according to claim 5, characterized in that: The middle pressure plate includes a first push plate part, a second push plate part and a push plate connecting member, the front end of the push plate connecting member is connected to the second push plate part, the rear end of the push plate connecting member is connected to the first push plate part, and the hydraulic drive motor is arranged between the first push plate part and the second push plate part.

7. The reciprocating extrusion algae-water separation device according to claim 6, characterized in that: The bottoms of the first water filtering funnel and the second water filtering funnel are both connected to an external water tank through a water filtering pipeline.

8. The reciprocating extrusion algae-water separation device according to claim 7, characterized in that: The bottom edge of the longitudinal section of the long through hole is inclined downward from the outside to the inside.

9. The reciprocating extrusion algae-water separation device according to claim 8, characterized in that: The first algae box and the second algae box are both provided with algae box doors.

10. The reciprocating extrusion algae-water separation device according to claim 9, characterized in that: Sliding grooves are arranged at the four corners inside the separation box along the front-to-back direction, and sliding blocks corresponding to the sliding grooves are arranged on the front and rear sides of the rear pressure plate, the middle pressure plate and the front pressure plate.

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