Filtering and extruding type algae-water separating device

Abstract

The utility model discloses a filtering extrusion type algae-water separating device which comprises a separating box, a first algae containing box, a water filtering funnel and a second algae containing box, the bottom of the separating box is open, the first algae containing box and the second algae containing box are the same in structure, and the tops of the first algae containing box and the second algae containing box are open. The first algae containing box, the water filtering funnel and the second algae containing box are sequentially arranged at the bottom of the separation box from back to front, and a filter screen plate is arranged on a top opening of the water filtering funnel; the forward rotation and reverse rotation of the hydraulic driving motor drive the middle push plate to reciprocate back and forth to push algae on the two sides of the middle push plate, so that water in the algae is squeezed out and conveyed into the algae containing box, and the algae-water separation efficiency and the separation effect are effectively improved. Furthermore, the algae-water separation device is convenient to operate, the algae-water separation efficiency and the algae-water 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 utility model belongs to algal water separation equipment technical field, specifically speaking, relate to filter extrusion type algal water separation device. BACKGROUND

[0002] Interbasin water transfer is mostly connected through newly-built channels, but the ecosystem of the newly-built channel needs a certain period of time to reach a balanced and stable state, so there is a risk of abnormal proliferation of sessile algae on the channel slope. If the sessile algae proliferate abnormally, it will affect the water supply safety, water quality safety and engineering safety of the channel, so cleaning the attached sessile algae on the slope and eliminating the risk hidden danger that the abnormal proliferation of the sessile algae may bring to the channel become a technical problem that needs to be solved urgently.

[0003] At present, in the domestic and foreign slope sessile algae removal technology, in order to avoid the secondary pollution problem to the water quality, physical removal methods are commonly used, mainly including manual cleaning, mechanical friction type cleaning and other methods. Manual cleaning not only has high labor intensity and low efficiency, but also can cause secondary pollution by spreading a large amount of pollutants into the water, and the sessile algae buried in the visual blind area by deep water cannot be completely removed. The mechanical friction type cleaning method is widely used and has obvious effect, which can directly remove part of the sessile algae in the water. However, the existing mechanical removal device has a complex structure, on the one hand, the removal device has a sealing problem caused by underwater mechanical transmission when working, which is easy to cause secondary pollution; on the other hand, it cannot completely remove the algae that proliferate abnormally in a short period of time, and has low efficiency in the working area. Therefore, a filter extrusion type algal water separation device with good cleaning effect, high working efficiency and environmentally friendly removal process is needed. Utility model content

[0004] The utility model aims at providing a filter extrusion type algal water separation device with good cleaning effect, high working efficiency and environmentally friendly removal process, which can realize ecological deep cleaning of slope sessile algae, suction of algal water mixture, compression and separation of algal water, slope greening spray irrigation and other functions.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The filter extrusion type algal water separation device comprises a separation box, a first algae loading box, a 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 top of the water filtering funnel is open, the first algae loading box, the water filtering funnel and the second algae loading box are sequentially arranged at the bottom of the separation box from back to front, and a filter screen plate is arranged on the open top of the water filtering funnel.

[0007] The rear pressing plate, the middle pushing plate and the front pressing plate are sequentially arranged in the separation box from back to front, 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 arranged symmetrically upward and downward, 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 arranged symmetrically upward and downward, the top plate of the separation box is provided with a first water inlet hole and a second water inlet hole symmetrically arranged front and back, the first water inlet hole is connected with a first sewage branch pipe, the second water inlet hole is connected with a second sewage branch pipe, the outlets of the first sewage branch pipe and the second sewage branch pipe are connected with a sewage main pipe, the sewage main pipe is provided with a two-position three-way electromagnetic valve, the middle pushing plate is connected with the power assembly,

[0008] When the first damping spring is in a natural elongation state, the rear pressing plate is located on the rear half of the filter screen plate, and when the second damping spring is in a natural elongation state, the front pressing plate is located on the front half of the filter screen plate.

[0009] The long strip through hole is arranged at the middle position of the left and right side plates of the separation box in the front and back directions, and the upper and lower sides of the long strip through hole are respectively provided with an upper guide plate and a lower guide plate, 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.

[0010] The left and right sides of the middle pushing plate are provided with power assemblies, the power assemblies include a hydraulic motor, the output shaft of the hydraulic motor extends to between the upper guide plate and the lower guide plate through the long strip through hole, the lower guide plate is provided with a rack and a lower wheel groove in the length direction, the upper guide plate is provided with an upper wheel groove corresponding to the lower wheel groove in the length direction, the output shaft of the hydraulic motor is provided with a gear and a guide wheel, the gear is engaged 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.

[0011] The bottom of the rear pressing plate and the front pressing plate is provided with a first wedge-shaped part and a second wedge-shaped part, the first wedge-shaped part includes a first wedge-shaped surface with a low front and a high back, the second wedge-shaped part includes a second wedge-shaped surface with a high front and a low back, the left and right side walls in the first algae installation box and the second algae installation box are provided with a first installation box and a second installation box, the first installation box is provided with a first vertical baffle, the top of the first vertical baffle is provided with a third wedge-shaped part corresponding to the first wedge-shaped part, the third wedge-shaped part includes a third wedge-shaped surface with a low front and a high back, the bottom of the first vertical baffle is connected to the bottom of the first installation box through a first reset spring, the second installation box is provided with a first vertical baffle, the top of the first vertical baffle is provided with a fourth wedge-shaped part corresponding to the second wedge-shaped part, the fourth wedge-shaped part includes a fourth wedge-shaped surface with a high front and a low back, and the bottom of the first vertical baffle is connected to the bottom of the second installation box through a second reset spring.

[0012] The first vertical baffle is provided with a first installation hole penetrating from front to back, the bottom surface of the first installation hole is a fifth wedge surface with the front being higher than the back, the inner wall of the rear side of the first installation box is provided with a first hydraulic telescopic oil cylinder, the front end of the first hydraulic telescopic oil cylinder is provided with a first wedge block, the front side surface of the first wedge block is a sixth wedge surface with the front being higher than the back, and the length direction of the first hydraulic telescopic oil cylinder corresponds to the first installation hole.

[0013] The first vertical baffle is provided with a second installation hole penetrating from front to back, the bottom surface of the second installation hole is a seventh wedge surface with the front being lower than the back, the inner wall of the front side of the second installation box is provided with a second hydraulic telescopic oil cylinder, the front end of the second hydraulic telescopic oil cylinder is provided with a second wedge block, the rear side surface of the second wedge block is an eighth wedge surface with the front being higher than the back, and the length direction of the second hydraulic telescopic oil cylinder corresponds to the second installation hole.

[0014] The top of the first installation box and the second installation box is respectively provided with a first cover box plate and a second cover box plate, the top wall of the first cover box plate and the second cover box plate is flush with the top wall of the first algae box and the second algae box, the first cover box plate is provided with a first through hole corresponding to the first vertical baffle, and the second cover box plate is provided with a second through hole corresponding to the first vertical baffle.

[0015] The first reset spring and the second reset spring support the first wedge part and the second wedge part of the first vertical baffle to extend out of the first through hole and the second through hole in the normal state.

[0016] The first vertical baffle and the first vertical baffle are provided with an extension sliding plate along the vertical direction on the left and right sides, and the left and right inner walls of the first installation box and the second installation box are provided with an extension sliding groove corresponding to the extension sliding plate.

[0017] The intermediate push plate comprises a first push plate part, a second push plate part and a push plate connecting piece, the front end of the push plate connecting piece is connected to the second push plate part, the rear end of the push plate connecting piece is connected to the first push plate part, and the hydraulic motor is arranged between the first push plate part and the second push plate part.

[0018] The water filter funnel and the bottom of the water filter funnel are connected to an external water tank through a connecting pipeline.

[0019] The bottom edge of the longitudinal section of the long hole is inclined downward from outside to inside.

[0020] The first algae box and the second algae box are provided with an algae box door.

[0021] The four corners of the separation box are provided with sliding grooves along the front and back directions, and the front and back side surfaces of the rear pressing plate, the intermediate push plate and the front pressing plate are provided with sliding blocks corresponding to the sliding grooves.

[0022] The application drives the middle push plate to reciprocate forward and backward by the forward rotation and reverse rotation of the hydraulic drive motor, pushes the algae on both sides of the middle push plate, makes the water in the algae be squeezed out and be sent to the algae loading box, effectively improves the algae water separation efficiency and separation effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the perspective view of the algae water separation device of the utility model.

[0024] Figure 2 is the front view of the algae water separation device of the utility model.

[0025] Figure 3 is one of the sectional views of the algae water separation device of the utility model.

[0026] Figure 4 is the top view of the algae water separation device of the utility model.

[0027] Figure 5 is the second sectional view of the algae water separation device of the utility model.

[0028] Figure 6 is the side view of the algae water separation device of the utility model.

[0029] Figure 7 is Figure 6 the sectional view of the middle B-B surface.

[0030] Figure 8 is the perspective view of the algae water separation device of the utility model except the separation box.

[0031] Figure 9 is Figure 8 the front view.

[0032] Figure 10 is Figure 8 the top view.

[0033] Figure 11 is Figure 8 the side view. DETAILED DESCRIPTION

[0034] As Figures 1-11As shown, the filter extrusion algae water separation device comprises a separation box 44, a first algae loading box 45, a water filtering funnel 46 and a second algae loading box 96. The bottom of the separation box 44 is open. The first algae loading box 45 and the second algae loading box 96 are the same in structure and both have an open top. The top of the water filtering funnel 46 is open. The first algae loading box 45, the water filtering funnel 46 and the second algae loading box 96 are sequentially arranged from back to front at the bottom of the separation box 44. A filter screen 48 is arranged on the open top of the water filtering funnel 46.

[0035] A rear pressing plate 50, an intermediate pushing plate 51 and a front pressing plate 52 are sequentially and slidably arranged in the separation box 44 from back to front. The rear pressing plate 50 is connected to the inner wall of the rear side plate of the separation box 44 through at least two first damping springs 53 arranged symmetrically above and below. The front pressing plate 52 is connected to the inner wall of the front side plate of the separation box 44 through at least two second damping springs 54 arranged symmetrically above and below. First and second water inlet holes 55 and 56 symmetrically arranged in front and back are formed in the top plate of the separation box 44. The first water inlet hole 55 is connected to a first sewage branch pipe 101. The second water inlet hole 56 is connected to a second sewage branch pipe 102. The outlets of the first and second sewage branch pipes 101 and 102 are both connected to a sewage main pipe 103. The sewage main pipe is provided with a two-position three-way electromagnetic valve 104. The intermediate pushing plate 51 is connected to the power assembly, Figure 5

[0036] When the first damping spring 53 is in a natural elongation state, the rear pressing plate 50 is located on the rear half of the filter screen 48. When the second damping spring 54 is in a natural elongation state, the front pressing plate 52 is located on the front half of the filter screen 48.

[0037] Long strip through holes 57 along the front and back directions are arranged at the middle positions of the left and right side plates of the separation box 44. Upper and lower guide plates 58 and 59 are respectively arranged on the upper and lower sides of the long strip through holes 57. The upper and lower guide plates 58 and 59 are arranged on the outer surfaces of the left and right side plates of the separation box 44.

[0038] The power assembly is arranged on the left and right sides of the intermediate pushing plate 51. The power assembly comprises a hydraulic drive motor. The output shaft of the hydraulic drive motor extends to between the upper and lower guide plates 58 and 59 through the long strip through hole 57. A rack 62 and a lower wheel groove are arranged on the lower guide plate 59 along the length direction. An upper wheel groove corresponding to the lower wheel groove is arranged on the upper guide plate 58 along the length direction. A gear 60 and a guide wheel 61 are arranged on the output shaft of the hydraulic drive motor. The gear 60 is engaged with the rack 62. The bottom of the guide wheel 61 is located in the lower wheel groove. The top of the guide wheel 61 is located in the upper wheel groove.

[0039] ​The bottom of the rear pressing plate 50 and the front pressing plate 52 is provided with a first wedge-shaped part and a second wedge-shaped part, the first wedge-shaped part includes a first wedge-shaped surface with low front and high back, and the second wedge-shaped part includes a second wedge-shaped surface with high front and low back, the left and right side walls in the first algae box 45 and the second algae box 96 are provided with a first installation box 65 and a second installation box 66, the first installation box 65 is provided with a first vertical baffle 67, the top of the first vertical baffle 67 is provided with a third wedge-shaped part corresponding to the first wedge-shaped part, the third wedge-shaped part includes a third wedge-shaped surface with low front and high back, the bottom of the first vertical baffle 67 is connected to the bottom of the first installation box 65 through a first reset spring 63, the second installation box 66 is provided with a first vertical baffle 68, the top of the first vertical baffle 68 is provided with a fourth wedge-shaped part corresponding to the second wedge-shaped part, the fourth wedge-shaped part includes a fourth wedge-shaped surface with high front and low back, the bottom of the first vertical baffle 68 is connected to the bottom of the second installation box 66 through a second reset spring 64;

[0040] The first vertical baffle 67 is provided with a first installation hole penetrating from front to back, the first installation hole is provided with a first wedge-shaped block, the first wedge-shaped block includes a fifth wedge-shaped surface with high front and low back, the rear side inner wall of the first installation box 65 is provided with a first hydraulic telescopic oil cylinder 69, the front end of the first hydraulic telescopic oil cylinder 69 is provided with a second wedge-shaped block, the second wedge-shaped block includes a sixth wedge-shaped surface with high front and low back, the length direction of the first hydraulic telescopic oil cylinder 69 corresponds to the first installation hole;

[0041] The first vertical baffle 68 is provided with a second installation hole penetrating from front to back, the second installation hole is provided with a third wedge-shaped block, the third wedge-shaped block includes a seventh wedge-shaped surface with low front and high back, the rear side inner wall of the second installation box 66 is provided with a second hydraulic telescopic oil cylinder 70, the front end of the second hydraulic telescopic oil cylinder 70 is provided with a fourth wedge-shaped block, the fourth wedge-shaped block includes an eighth wedge-shaped surface with high front and low back, the length direction of the second hydraulic telescopic oil cylinder 70 corresponds to the second installation hole;

[0042] The top of the first installation box 65 and the second installation box 66 is respectively provided with a first cover box plate and a second cover box plate, the top wall of the first cover box plate and the second cover box plate is flush with the top wall of the first algae box 45 and the second algae box 96 respectively, the first cover box plate is provided with a first through hole corresponding to the first vertical baffle 67, and the second cover box plate is provided with a second through hole corresponding to the first vertical baffle 68;

[0043] The bottom of the water filtering funnel 46 is connected to an external water tank through a water filtering pipeline. An irrigation pump can also be arranged in the water filtering funnel 46, and the irrigation pump is connected to a plurality of greening spray nozzles through an irrigation pipeline. The four corners of the separation tank 44 are provided with sliding grooves 71 in the front-rear direction, and the front and rear sides of the rear pressing plate 50, the middle pressing plate 51 and the front pressing plate 52 are provided with sliding blocks 72 corresponding to the sliding grooves 71. The first algae loading tank 45 and the second algae loading tank 96 are both provided with algae tank doors. When the algae loading tank is full or the algae removal work is completed, the algae can be taken out through the algae tank door for next use. The bottom edge of the longitudinal section of the long hole 57 is inclined downward from outside to inside. When the algae water is transported into the separation tank 44, the phenomenon of sewage splashing will occur. The downward inclination of the bottom edge of the longitudinal section of the long hole 57 from outside to inside can block the sewage inside the separation tank 44. If part of the sewage splashes out, it will fall into the lower wheel groove. The lower water groove is provided with a drain hole, as shown in Figure 3 , the drain hole is connected to the water filtering funnel through a connecting pipeline 97 (the connecting pipeline 97 is not shown in other figures), so that the sewage can return to the water filtering funnel again. In addition, the lower water groove and the rack 62 and the upper water groove and the rack 62 are both provided with a water baffle 98 (the water baffle 98 is only shown in Figure 3 , and is not shown in other figures).

[0044] In specific operation, (1) the algae water mixed slurry is sent to the rear side of the middle pressing plate 51 in the separation device, and the sewage in the algae water mixed slurry is naturally filtered; specifically, in the initial state, the middle pressing plate 51 is located at the middle position of the separation tank 44 in the front-rear direction, the two-position three-way electromagnetic valve 104 controls the communication between the sewage inlet main pipe 103 and the first sewage inlet branch pipe 101, the algae water mixed slurry falls to the rear side of the middle pressing plate 51 through the first water inlet hole 55 through the sewage inlet main pipe 103 and the first sewage inlet branch pipe 101, and the sewage of the algae water mixed slurry is filtered into the first water filtering funnel 46 under the action of gravity;

[0045] (2) When the liquid level of the algae water mixture reaches a certain height, stop delivering the algae water mixture to the rear side of the middle pressing plate 51, continue delivering the algae water mixture to the front side of the middle pressing plate 51, and at the same time, the power assembly in the separation device drives the middle pressing plate 51 to move backward, fully extrudes the sewage in the algae on the rear side of the middle pressing plate 51, and sends the algae to the first algae loading box 45. Specifically, the following sub-steps are included: ① The two-position three-way electromagnetic valve 104 controls the communication between the sewage inlet main pipe 103 and the second sewage inlet branch pipe 102, and the algae water mixture passes through the sewage inlet main pipe 103 and the second sewage inlet branch pipe 102 and falls to the front side of the middle pressing plate 51 through the second water inlet hole 56, and at the same time, the two hydraulic drive motors rotate forward to synchronously drive the gears 60 on the same side to move backward on the rack 62, the middle pressing plate 51 pushes the algae on the first water filtering funnel 46 to move backward, so that the algae are extruded by the middle pressing plate 51 and the rear pressing plate 50, and as the first damping spring 53 is compressed, the extrusion force on the algae becomes larger and larger, and the water contained in the algae is still extruded out, and the sewage falls into the guide inclined plate 99 at the bottom of the first algae loading box 45 and is collected to the water outlet 100 to be discharged from the first algae loading box 45;

[0046] ② The middle pressing plate 51 continues to move backward to continuously move the rear pressing plate 50 backward, and in the process of moving the rear pressing plate 50 backward, 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 reset 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 is restored to the original position upward under the action of the first reset spring 63;

[0047] ③ Then the hydraulic drive motor reverses rotation, the hydraulic drive motor drives the middle pressing plate 51 to move forward, the rear pressing plate 50 is blocked by the first vertical baffle 67, and the algae between the middle pressing plate 51 and the rear pressing plate 50 are no longer extruded, and naturally fall into the first algae loading box 45.

[0048] (3) the power assembly drives the intermediate pressing plate 51 to move forward, when the intermediate pressing plate 51 moves to the original position, the sewage mixed solution is stopped to be delivered to the front side of the intermediate pressing plate 51, the sewage mixed solution is continuously delivered to the rear side of the intermediate pressing plate 51, the intermediate pressing plate 51 continuously moves forward, the sewage in the algae in the front side of the intermediate pressing plate 51 is fully squeezed out and the algae is sent into the second algae loading box 96; specifically, the following sub-steps are included: ① the two hydraulic drive motors rotate reversely, synchronously drive the gears 60 on the same side to move forward on the rack 62, so that the intermediate pressing plate 51 continuously moves forward, when the intermediate pressing plate 51 moves to the original position, the two-position three-way electromagnetic valve 104 controls the sewage main pipe 103 to communicate with the first sewage branch pipe 101 again, the sewage mixed solution passes through the sewage main pipe 103 and the first sewage branch pipe 101 and falls to 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 is squeezed by the intermediate pressing plate 51 and the front pressing plate 52, as the second damping spring 54 is compressed, the squeezing force on the algae is larger and larger, the water contained in the algae is still squeezed out, the sewage falls into the flow guide inclined plate 99 at the bottom of the second algae loading box 96 and is collected to the water outlet 100 to be discharged from the second algae loading box 96;

[0049] ② the intermediate pressing plate 51 continuously moves forward to continuously move the front pressing plate 52 forward, in the process of moving forward 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 reset 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 the original position under the action of the second reset spring 64;

[0050] ③ then the hydraulic drive motor rotates forward, the hydraulic drive motor drives the intermediate pressing plate 51 to move backward, 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 is no longer squeezed, and falls into the second algae loading box 96 naturally.

[0051] At the same time when 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 oil cylinder 69 pushes the second wedge block 108 to move forward, the second wedge block 108 presses 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 is separated from the front side of the lower end of the rear pressing plate 50, and the rear pressing plate 50 slowly returns to the original position under the action of the first damping spring 53;

[0052] At the same time when 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 oil cylinder 70 is elongated to push the fourth wedge block to move backward, the fourth wedge block presses the third wedge block to make the second vertical baffle 68 move downward again, and the front pressing plate 52 slowly returns to the original position under the action of the second damping spring 54.

[0053] (4) continuously repeat step (2) and step (3) until the first algae box 45 and the second algae box 96 are filled with algae, and when the algae box is filled with algae, the algae in the algae box is taken out, and after the algae is taken out, step (2) and step (3) are continuously repeated until the whole algae water separation is finished.

[0054] The algae water separation device of the utility model drives the intermediate push plate to reciprocate forward and backward through the forward rotation and reverse rotation of the hydraulic drive motor, pushes the algae on both sides of the intermediate push plate, makes the water in the algae be squeezed out and be sent to the algae box, effectively improves the algae water separation efficiency and separation effect. In addition, the utility model is convenient to operate, simplifies the algae water separation process, greatly improves the algae water separation efficiency and separation effect, effectively solves the technical problems of difficult operation, low separation efficiency and poor separation effect of the existing separation device.

[0055] The above examples are only used to illustrate but not to limit the technical solutions of the utility model, although the utility model is described in detail with reference to the above examples, those skilled in the art should understand that; still can modify or equivalent replace the utility model, without any modification or partial replacement deviating from the spirit and scope of the utility model, which should be covered in the claim range of the utility model.

Claims

1. A filter press algal water separation device, characterized by: The device comprises a separation tank, a first algae loading tank, a water filtering funnel and a second algae loading tank, the bottom of the separation tank is open, the first algae loading tank and the second algae loading tank are identical in structure and both have an open top, the top of the water filtering funnel is open, the first algae loading tank, the water filtering funnel and the second algae loading tank are sequentially arranged at the bottom of the separation tank from back to front, and a filter screen is arranged on the open top of the water filtering funnel. The rear pressing plate, the middle pushing plate and the front pressing plate are sequentially and slidably arranged in the separation tank from back to front, the rear pressing plate is connected to the inner wall of the rear side plate of the separation tank through at least two first damping springs arranged symmetrically above and below, the front pressing plate is connected to the inner wall of the front side plate of the separation tank through at least two second damping springs arranged symmetrically above and below, the top plate of the separation tank is provided with first and second water inlet holes symmetrically arranged front and back, the first water inlet hole is connected with a first sewage branch pipe, the second water inlet hole is connected with a second sewage branch pipe, the outlets of the first and second sewage branch pipes are both connected with a sewage main pipe, the sewage main pipe is provided with a two-position three-way electromagnetic valve, and the middle pushing plate is connected with the power assembly. When the first damping spring is in a natural elongation state, the rear pressing plate is located on the rear half of the filter screen, and when the second damping spring is in a natural elongation state, the front pressing plate is located on the front half of the filter screen. Long strip through holes are arranged in the middle positions of the left and right side plates of the separation tank in the front and back directions, and upper and lower guide plates are arranged on the upper and lower sides of the long strip through holes. The left and right sides of the middle pushing plate are both provided with power assemblies, the power assemblies comprise a hydraulic motor, the output shaft of the hydraulic motor extends to the space between the upper and lower guide plates through the long strip through hole, a rack and a lower wheel groove are arranged on the lower guide plate in the length direction, an upper wheel groove corresponding to the lower wheel groove is arranged on the upper guide plate in the length direction, a gear and a guide wheel are arranged on the output shaft of the hydraulic motor, the gear is engaged 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.

2. The filter press algal water separation device of claim 1, wherein: The bottom of the rear pressing plate and the front pressing plate is provided with a first wedge-shaped part and a second wedge-shaped part, the first wedge-shaped part comprises a first wedge-shaped surface with a low front and a high back, the second wedge-shaped part comprises a second wedge-shaped surface with a high front and a low back, first and second installation boxes are arranged on the left and right side walls in the first and second algae loading tanks, a first vertical baffle is installed in the first installation box, the top of the first vertical baffle is provided with a third wedge-shaped part corresponding to the first wedge-shaped part, the third wedge-shaped part comprises a third wedge-shaped surface with a low front and a high back, the bottom of the first vertical baffle is connected to the bottom of the first installation box through a first reset spring, a first vertical baffle is installed in the second installation box, the top of the first vertical baffle is provided with a fourth wedge-shaped part corresponding to the second wedge-shaped part, the fourth wedge-shaped part comprises a fourth wedge-shaped surface with a high front and a low back, and the bottom of the first vertical baffle is connected to the bottom of the second installation box through a second reset spring.

3. The filter-press algae water separation device of claim 2, wherein: The first vertical baffle is provided with a first installation hole penetrating from front to back, and the bottom surface of the first installation hole is a fifth wedge surface with the front higher than the back; the first vertical baffle is provided with a first hydraulic telescopic oil cylinder on the inner wall of the back side, and the front end of the first hydraulic telescopic oil cylinder is provided with a first wedge block; the front side surface of the first wedge block is a sixth wedge surface with the front higher than the back; the length direction of the first hydraulic telescopic oil cylinder corresponds to the first installation hole.

4. The reciprocating extrusion algal water separation device of claim 3, wherein: The first vertical baffle is provided with a second installation hole penetrating from front to back, and the bottom surface of the second installation hole is a seventh wedge surface with the back higher than the front; the first vertical baffle is provided with a second hydraulic telescopic oil cylinder on the inner wall of the front side, and the front end of the second hydraulic telescopic oil cylinder is provided with a second wedge block; the back side surface of the second wedge block is an eighth wedge surface with the front higher than the back; the length direction of the second hydraulic telescopic oil cylinder corresponds to the second installation hole. The top of the first installation box and the second installation box is respectively provided with a first cover box plate and a second cover box plate; the top wall of the first cover box plate and the second cover box plate is flush with the top wall of the first algae box and the second algae box; the first cover box plate is provided with a first through hole corresponding to the first vertical baffle; the second cover box plate is provided with a second through hole corresponding to the first vertical baffle.

5. The reciprocating extrusion algal water separation device of claim 4, wherein: The first reset spring and the second reset spring support the first wedge part and the second wedge part of the first vertical baffle to extend out of the first through hole and the second through hole in the normal state. The first vertical baffle and the first vertical baffle are provided with an extension sliding plate along the vertical direction on the left and right sides; the left and right inner walls of the first installation box and the second installation box are provided with an extension sliding groove corresponding to the extension sliding plate.

6. The reciprocating extrusion algal water separation device of claim 5, wherein: The intermediate push plate comprises a first push plate part, a second push plate part and a push plate connecting piece; the front end of the push plate connecting piece is connected to the second push plate part; the rear end of the push plate connecting piece is connected to the first push plate part; the hydraulic motor is arranged between the first push plate part and the second push plate part.

7. The reciprocating extrusion algal water separation device of claim 6, wherein: The water filter funnel and the bottom of the water filter funnel are connected to an external water tank through a connecting pipeline.

8. The reciprocating extrusion algal water separation device of claim 7, wherein: The bottom edge of the longitudinal section of the long hole is inclined downward from outside to inside.

9. The reciprocating extrusion algal water separation device of claim 8, wherein: The first algae box and the second algae box are provided with an algae box door.

10. The reciprocating extrusion algal water separation device of claim 9, wherein: The four corners of the separation box are provided with sliding grooves along the front and back directions; the front and back side surfaces of the rear pressing plate, the intermediate push plate and the front pressing plate are provided with sliding blocks corresponding to the sliding grooves.

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