Restaurant wastewater solid-liquid separation device based on environmental protection

Abstract

The embodiment of the invention provides a restaurant wastewater solid-liquid separation device based on environmental protection, and relates to the technical field of restaurant wastewater treatment. The restaurant wastewater solid-liquid separation device based on environmental protection comprises a shell, a top box is embedded in the top of the shell, a bottom box is embedded in the bottom of the shell, and walking wheels are arranged on the periphery, close to the bottom box, of the shell; a top cover is clamped to the top, close to the top box, of the shell, a rear cover is fixedly connected to the back face of the top box, a driving assembly and an extrusion assembly are arranged on the two sides, close to the top box, of the shell correspondingly, and the driving assembly comprises a servo motor fixed to the rear cover; the extrusion assembly comprises a reciprocating lead screw rotating between the shell and the top box, and centrifugal assemblies are arranged on the periphery, close to the top box, of the shell. By adopting a linkage mode of combining extrusion, unblocking, centrifugation and flocculation, the restaurant wastewater is subjected to sufficient and efficient solid-liquid separation treatment, and the follow-up standard discharge and recycling of the restaurant wastewater are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of catering wastewater treatment, and particularly relates to a solid-liquid separation device for catering wastewater based on environmental protection. Background Art

[0002] Catering wastewater usually comes from the processes of raw material cleaning and food equipment cleaning. The wastewater contains various pollutants such as grease, food residues, suspended solids, and organic matter. If this kind of wastewater is directly discharged into the urban sewer or natural water body without treatment, it will cause serious pollution to the environment. And there are solid substances such as bones and residues in the catering wastewater, so it is necessary to use treatment equipment to carry out solid-liquid separation treatment on the catering wastewater.

[0003] In the prior art (patent application with publication number CN114735858B and patent name "A Solid-Liquid Separation Device for Catering Wastewater Based on Environmental Protection"), during the solid-liquid separation process, medicine is added and pressure is applied to food residues multiple times, and the amount of medicine added each time will gradually increase, effectively preventing food residues from deteriorating and rotting in the short term. And the food residues after pressure become material blocks, which are convenient for transportation, have no peculiar smell generated by rotting, retain a certain nutritional value, and can be used as fertilizers and feeds. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] Currently, most of the solid-liquid separation devices for catering wastewater are relatively simple. Due to the existence of solid substances such as bones and residues in the catering wastewater, the filter screen is easily blocked during solid-liquid separation, resulting in insufficient separation of the catering wastewater, which is not conducive to the subsequent compliance discharge and recycling of the catering wastewater, and is rather troublesome. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems in the prior art, that is, it cannot adopt a combined linkage method of extrusion, blockage clearing, centrifugation, and flocculation to carry out sufficient and efficient solid-liquid separation treatment on catering wastewater, which is not conducive to the subsequent compliance discharge and recycling of the catering wastewater, and is rather troublesome. For this reason, this application proposes a solid-liquid separation device for catering wastewater based on environmental protection.

[0006] To achieve the above object, the specific technical solution of the present invention is as follows:

[0007] A solid-liquid separation device for catering wastewater based on environmental protection includes a housing. A top box is embedded at the top of the housing, and a bottom box is embedded at the bottom of the housing. Walking wheels are provided around the housing near the bottom box.

[0008] A top cover is clamped on the top of the housing near the top box, and a rear cover is fixedly connected to the back of the top box. A driving component and an extrusion component are respectively arranged on both sides of the housing near the top box, and the driving component includes a servo motor fixed on the rear cover.

[0009] The extrusion assembly includes a reciprocating screw rod that rotates between the outer shell and the top box, and centrifugal components are provided around the outer shell close to the top box. The centrifugal components include centrifugal barrels arranged around the inner cavity of the outer shell.

[0010] Preferably: The drive assembly further includes a main synchronous pulley fixed on the output shaft of the servo motor, and a slave synchronous pulley is connected to the outside of the main synchronous pulley through a synchronous belt. A cross bar that rotates in cooperation with the outer shell is fixedly connected to the inner cavity of the slave synchronous pulley, and a main bevel gear is fixedly connected to the other end of the cross bar. A sub-bevel gear is meshed with the outside of the main bevel gear.

[0011] Preferably: The extrusion assembly further includes a screw sleeve threadedly connected to the reciprocating screw rod, and the reciprocating screw rod is fixedly connected to the sub-bevel gear. Push seats are fixedly connected to both sides of the screw sleeve, and push rods that slide in cooperation with the outer shell and the top box are fixedly connected to the inner sides of the push seats. An extrusion plate is fixedly connected to the inner side of the push rod, and cleaning strips are fixedly connected to both the upper and lower sides of the extrusion plate.

[0012] Preferably: The centrifugal assembly further includes a vertical rod fixed to the bottom of the differential gear and rotatably engaged with the outer shell. The differential gear is meshed with the main bevel gear. A circular gear is fixedly connected to the bottom of the vertical rod. Ring gears are meshed with both sides of the circular gear, and the ring gears are fixedly connected to the centrifugal barrels. A filter rack is embedded in the inner cavity of the centrifugal barrels.

[0013] Preferably: A coarse filter screen that slides in cooperation with the cleaning strips is embedded on one side of the top box close to the top cover, and a fine filter screen that slides in cooperation with the cleaning strips is embedded at the bottom of the inner cavity of the top box. An arc-shaped shovel that is used in cooperation with the fine filter screen is fixedly connected to the bottom of the inner side of the extrusion plate.

[0014] Preferably: T-shaped sliding grooves are provided on both sides of the outer shell close to the push seats, and T-shaped sliding blocks fixedly engaged with the push seats are slidably connected to the inner cavities of the T-shaped sliding grooves.

[0015] Preferably: A sedimentation tray is communicated with the bottom of the top box close to the fine filter screen, and sewage pipes with one-way valves are communicated with the four sides of the sedimentation tray.

[0016] Preferably: Annular sliding rails are provided on both the upper and lower sides of the centrifugal barrels, and annular sliding frames fixedly engaged with the outer shell are rotatably connected in the annular sliding rails.

[0017] Preferably: Communicating ends are communicated with both the upper and lower sides of the centrifugal barrels, and rotating ends are rotatably connected to the communicating ends and are kept in a mutually communicating state.

[0018] Preferably: A discharge pipe that is communicated and cooperated with the bottom box is communicated with the bottom of the rotating end, and an upper cover and a lower cover that are used in cooperation with the top box and the bottom box are respectively embedded on the front surface of the outer shell.

[0019] A solid-liquid separation device for catering wastewater based on environmental protection of the present invention has the following advantages:

[0020] 1. During the solid-liquid separation of catering wastewater, for this solid-liquid separation device for catering wastewater based on environmental protection, a unified driving source is first provided by a servo motor, and the cross bars on two sets of slave synchronous wheels are driven to rotate synchronously by a main synchronous wheel, and the two cross bars drive the sub-bevel gears on two sets of main bevel gears to rotate.

[0021] 2. Immediately afterwards, for this solid-liquid separation device for catering wastewater based on environmental protection, the two sub-bevel gears drive two reciprocating lead screws to rotate synchronously. The two reciprocating lead screws drive two sets of pushing seats to horizontally reciprocate through two sets of lead screw sleeves. The two sets of pushing seats use the pressing plates on two sets of pushing rods to extrude and form the solids in the catering wastewater entering the top box, and a cleaning strip is used to clean the residues remaining on the coarse filter screen and the fine filter screen, playing a role in preventing blockage.

[0022] 3. Then, for this solid-liquid separation device for catering wastewater based on environmental protection, two sets of differential gears are driven to rotate by two sets of main bevel gears. The two sets of differential gears drive two sets of circular gears to rotate through two vertical rods. The two sets of circular gears drive the centrifugal barrels in four sets of tooth rings to rotate. The centrifugal barrels drive the catering wastewater entering the filter rack to be centrifugally filtered, improving the adequacy of solid-liquid separation in the catering wastewater, so as to avoid rework due to incomplete separation, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a solid-liquid separation device for catering wastewater based on environmental protection of the present invention;

[0025] Figure 2 It is a rear view of the structure of a solid-liquid separation device for catering wastewater based on environmental protection of the present invention;

[0026] Figure 3 It is a cross-sectional view of the structure of a solid-liquid separation device for catering wastewater based on environmental protection of the present invention;

[0027] Figure 4 It is an internal view of the structure of a solid-liquid separation device for catering wastewater based on environmental protection of the present invention;

[0028] Figure 5 Initial state diagram of the drive component and extrusion component structures of the present invention;

[0029] Figure 6 Working state diagram of the drive component and extrusion component structures of the present invention;

[0030] Figure 7 Side view of the drive component and extrusion component structures of the present invention;

[0031] Figure 8 Partial side view of the drive component and extrusion component structures of the present invention;

[0032] Figure 9 Rear view of the drive component and centrifugal component structures of the present invention;

[0033] Figure 10 Partial side view of the drive component and centrifugal component structures of the present invention;

[0034] Figure 11 Exploded sectional view of the sedimentation tray and centrifugal barrel structures of the present invention;

[0035] Figure 12 Side sectional view of the bottom box, drive component and flocculation component structures of the present invention;

[0036] Figure 13 Front exploded view of the drive component and flocculation component structures of the present invention;

[0037] Figure 14 Exploded sectional view of the outer shell, top box, bottom box, top cover, upper seal cover and lower seal cover structures of the present invention.

[0038] Explanation of the markings in the figures: 1. Outer shell; 2. Top box; 3. Bottom box; 4. Top cover; 5. Rear cover; 6. Drive component; 61. Servo motor; 62. Main synchronous pulley; 63. Driven synchronous pulley; 64. Cross bar; 65. Main bevel gear; 66. Sub bevel gear; 7. Extrusion component; 71. Reciprocating lead screw; 72. Lead screw sleeve; 73. Pushing seat; 74. Pushing rod; 75. Extrusion plate; 76. Cleaning strip; 8. Centrifugal component; 81. Differential gear; 82. Vertical rod; 83. Circular gear; 84. Ring gear; 85. Centrifugal barrel; 86. Filter rack; 9. Flocculation component; 91. Embedded cover; 92. Sub synchronous pulley; 93. Rotating shaft; 94. Driving bevel gear; 95. Driven bevel gear; 96. Mixing blade; 10. Coarse filter screen; 11. Fine filter screen; 12. T-shaped sliding groove; 13. T-shaped sliding block; 14. Sedimentation tray; 15. Drain pipe; 16. Annular slide rail; 17. Annular slide frame; 18. Connecting end; 19. Rotating end; 20. Discharge pipe; 21. Upper seal cover; 22. Lower seal cover. Detailed implementation manners

[0039] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments:

[0040] As Figures 1 - 14 shown, a solid-liquid separation device for catering wastewater based on environmental protection of the present invention includes a housing 1. A top box 2 is embedded at the top of the housing 1, and a bottom box 3 is embedded at the bottom of the housing 1. A filling pipe is communicated with the top of the back surface of the bottom box 3, and a drain pipe is communicated with the bottom of the back surface of the bottom box 3. Walking wheels are provided around the housing 1 close to the bottom box 3, facilitating its movement;

[0041] A top cover 4 is clamped on the top of the housing 1 close to the top box 2, and a rear cover 5 is fixedly connected to the back surface of the top box 2. A driving component 6 and an extrusion component 7 are respectively arranged on both sides of the housing 1 close to the top box 2. The driving component 6 includes a servo motor 61 fixed on the rear cover 5; the extrusion component 7 includes a reciprocating lead screw 71 rotating between the housing 1 and the top box 2, which extrudes the solids in the catering wastewater entering the top box 2 into a formed shape and also cleans the residues on the mesh holes, playing a role in preventing blockage. Centrifugal components 8 are arranged around the housing 1 close to the top box 2. The centrifugal components 8 include centrifugal barrels 85 arranged around the inner cavity of the housing 1, which centrifugally filter the catering wastewater entering the centrifugal barrels 85, improving the adequacy of solid-liquid separation in the catering wastewater, so as to avoid rework due to incomplete separation, saving time and effort.

[0042] As Figures 5 - 11 shown, the driving component 6 further includes a main synchronous wheel 62 fixed on the output shaft of the servo motor 61. The outer side of the main synchronous wheel 62 is connected with a slave synchronous wheel 63 through a synchronous belt. A cross bar 64 rotationally matched with the housing 1 is fixedly connected to the inner cavity of the slave synchronous wheel 63. The servo motor 61 provides a unified driving source, and the cross bars 64 on the two slave synchronous wheels 63 are driven to rotate synchronously by the main synchronous wheel 62. The other end of the cross bar 64 is fixedly connected with a main bevel gear 65, and a sub-bevel gear 66 is meshed with the outer side of the main bevel gear 65. The two cross bars 64 drive the sub-bevel gears 66 on the two main bevel gears 65 to rotate;

[0043] The extrusion assembly 7 further includes a lead screw sleeve 72 threadedly connected to the reciprocating lead screw 71, and the reciprocating lead screw 71 is fixedly connected to the secondary bevel gear 66. Push seats 73 are fixedly connected to both sides of the lead screw sleeve 72. The two secondary bevel gears 66 drive the two reciprocating lead screws 71 to rotate synchronously. The two reciprocating lead screws 71 drive the two push seats 73 to reciprocate horizontally through the two lead screw sleeves 72. A push rod 74 that is slidably engaged with the housing 1 and the top box 2 is fixedly connected to the inner side of the push seat 73. An extrusion plate 75 is fixedly connected to the inner side of the push rod 74. The two push seats 73 use the extrusion plates 75 on the two push rods 74 to extrude and form the solids in the catering wastewater entering the top box 2. Cleaning strips 76 are fixedly connected to both the upper and lower sides of the extrusion plate 75. The cleaning strips 76 clean the residues accumulated on the coarse filter screen 10 and the fine filter screen 11, playing a role in preventing blockage;

[0044] A coarse filter screen 10 that is slidably engaged with the cleaning strip 76 is embedded on one side of the top box 2 close to the top cover 4 to intercept large-volume solids in the catering wastewater poured into the top box 2 for manual cleaning. A fine filter screen 11 that is slidably engaged with the cleaning strip 76 is embedded at the bottom of the inner cavity of the top box 2 to intercept small-volume solids in the catering wastewater after passing through the coarse filter screen 10. An arc-shaped shovel that is used in conjunction with the fine filter screen 11 is fixedly connected to the bottom of the inner side of the extrusion plate 75 to shovel and collect the solids accumulated on the fine filter screen 11, playing a role in preventing blockage. T-shaped chutes 12 are opened on both sides of the housing 1 close to the push seat 73. A T-shaped slider 13 that is fixedly engaged with the push seat 73 is slidably connected to the inner cavity of the T-shaped chute 12, playing a role in sliding support for the push seat 73 and improving the displacement stability of the push seat 73.

[0045] The centrifugal assembly 8 further includes a vertical rod 82 fixed to the bottom of the differential gear 81 and rotatably engaged with the housing 1, and the differential gear 81 is engaged with the main bevel gear 65. A circular gear 83 is fixedly connected to the bottom of the vertical rod 82. The two main bevel gears 65 drive the two differential gears 81 to rotate. The two differential gears 81 drive the two circular gears 83 to rotate through the two vertical rods 82. Ring gears 84 are engaged with both sides of the circular gear 83, and the ring gears 84 are fixedly connected to the centrifugal barrel 85. A filter rack 86 is embedded in the inner cavity of the centrifugal barrel 85. The two circular gears 83 drive the centrifugal barrels 85 in the four ring gears 84 to rotate. The centrifugal barrels 85 drive the catering wastewater entering the filter rack 86 to perform centrifugal filtration treatment, improving the degree of solid-liquid separation in the catering wastewater to avoid rework due to insufficient separation, saving time and effort;

[0046] A sedimentation tray 14 is connected to the bottom of the top box 2 near the fine filter screen 11 to sediment and separate the residual solids in the double-filtered food waste water. Drainage pipes 15 with one-way valves are connected to the four sides of the sedimentation tray 14 to divert and discharge the filtered food waste water. Annular slide rails 16 are provided on both the upper and lower sides of the centrifugal barrel 85, and an annular slide frame 17 fixedly fitted with the outer shell 1 is rotatably connected inside the annular slide rails 16 to rotatably support the centrifugal barrel 85. Connecting ends 18 are connected to both the upper and lower sides of the centrifugal barrel 85, and a rotating end 19 is rotatably connected to the connecting end 18 and they are in a mutually communicating state, so as to meet the requirements of liquid supply and discharge of the centrifugal barrel 85 without affecting the normal centrifugal rotation of the centrifugal barrel 85. A discharge pipe 20 connected and fitted with the bottom box 3 is connected to the bottom of the rotating end 19 to facilitate the discharge of the centrifugally filtered food waste water into the bottom box 3. Upper covers 21 and lower covers 22 used in conjunction with the top box 2 and the bottom box 3 are respectively embedded in the front of the outer shell 1 to facilitate the cleaning of the solids in the top box 2 and the bottom box 3.

[0047] As Figures 12 - 13 shown, after the solid-liquid separation of the food waste water, since there are still small solid impurities remaining in the treated food waste water and it cannot be subjected to stirring and flocculation treatment, it will still lead to insufficient treatment of the food waste water. A flocculation assembly 9 is arranged in the inner cavity of the bottom box 3, and inner covers 91 are respectively embedded on both sides of the inner cavity of the bottom box 3. The bottom of the main synchronous pulley 62 far from the slave synchronous pulley 63 is drivingly connected with a secondary synchronous pulley 92 by a triangular belt, and a rotating shaft 93 rotatably fitted with the bottom box 3 and the rear cover 5 is fixedly connected to the inner cavity of the secondary synchronous pulley 92. Driving bevel gears 94 are fixedly connected to both the front and rear sides of the rotating shaft 93. The secondary synchronous pulley 92 drives the two driving bevel gears 94 to rotate synchronously through the rotating shaft 93, and driven bevel gears 95 rotatably fitted with the inner covers 91 are engaged with both sides of the driving bevel gears 94. Mixing blades 96 used in conjunction with the bottom box 3 are fixedly connected to the driven bevel gears 95. The two driving bevel gears 94 drive the two mixing blades 96 to rotate through the two driven bevel gears 95, and turbulently mix the food waste water and the flocculant reaching the bottom box 3, so that the small impurities in the food waste water reaching the bottom box 3 react with the flocculant to produce flocculation precipitation, further improving the degree of solid-liquid separation of the food waste water.

[0048] Working principle of a food waste water solid-liquid separation device based on environmental protection: First, open the top cover 4 and pour the food waste water and the disinfectant into the top box 2. Coarse filter screen 10 intercepts large solids such as bones and residues, and then they are manually cleaned. The pre-filtered food waste water passes through the fine filter screen 11 for fine filtration and then reaches the sedimentation tray 14 to sediment and intercept the small-volume solids in the remaining food waste water.

[0049] During the passage of the catering wastewater through the top box 2, the servo motor 61 is controlled to start and drive the main synchronous wheel 62 to rotate. The main synchronous wheel 62 drives two sets of slave synchronous wheels 63 and a single set of auxiliary synchronous wheels 92 to rotate synchronously through a triangular belt. The two sets of slave synchronous wheels 63 drive two sets of main bevel gears 65 to rotate through two cross bars 64. The two sets of main bevel gears 65 drive two sets of auxiliary bevel gears 66 to rotate successively. The two sets of auxiliary bevel gears 66 drive two reciprocating lead screws 71 to rotate. The two reciprocating lead screws 71 drive two sets of lead screw sleeves 72 to perform horizontal reciprocating displacement. With the sliding support and cooperation of the T-shaped chute 12 and the T-shaped slider 13 on the pushing seat 73, the two sets of lead screw sleeves 72 drive the pressing plates 75 on the two sets of push rods 74 to slide back and forth along the coarse filter 10 and the fine filter 11 in the top box 2, and squeeze the solids intercepted by the coarse filter 10 and the fine filter 11 into blocks. Moreover, the cleaning strips 76 at the upper and lower positions of the pressing plate 75 also clean the solids remaining in the meshes of the coarse filter 10 and the fine filter 11 to prevent blockage, so as to avoid blockage;

[0050] Immediately afterwards, the catering wastewater in the sedimentation pan 14 is discharged into the filter racks 86 in the four centrifugal barrels 85 through four sewage pipes 15. At the same time, the two sets of main bevel gears 65 also drive two sets of differential gears 81 to rotate. The two sets of differential gears 81 drive two sets of circular gears 83 to rotate through two vertical rods 82. With the rotational support and cooperation of the annular slide rail 16 and the annular slide frame 17 on the centrifugal barrels 85, the two sets of circular gears 83 drive the four centrifugal barrels 85 on the four toothed rings 84 to rotate. Moreover, the centrifugal barrels 85 also drive the connecting ends 18 to rotate within the rotating ends 19. Then, the rotating centrifugal barrels 85 drive the filter racks 86 to rotate accordingly, and the catering wastewater passing through the four filter racks 86 is centrifugally filtered into the four centrifugal barrels 85 and then discharged into the bottom box 3 through four discharge pipes 20;

[0051] Then, the auxiliary synchronous wheel 92 also drives two sets of driving bevel gears 94 to rotate through a rotating shaft 93. The two sets of driving bevel gears 94 also drive two sets of driven bevel gears 95 to rotate within the two embedded covers 91. The two sets of driven bevel gears 95 drive two sets of mixing blades 96 to rotate in the bottom box 3, and turbulently stir the catering wastewater reaching the bottom box 3 and the flocculant added in advance, so that the fine solids in the catering wastewater reaching the bottom box 3 react with the flocculant to form flocculation precipitation. After the flocculation reaction is completed, the upper cover 21 and the lower cover 22 are respectively opened to clean the solids squeezed into blocks in the top box 2 and the bottom box 3 and the flocculated matter of flocculation precipitation.

[0052] It should be noted that the specific model specifications of the servo motor 61 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0053] The power supply circuit of the servo motor 61 is clear to those skilled in the art and will not be described in detail herein.

[0054] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A solid-liquid separation device for restaurant wastewater based on environmental protection, comprising a housing (1), characterized in that: A top box (2) is embedded in the top of the shell (1), and a bottom box (3) is embedded in the bottom of the shell (1); and running wheels are provided on all four sides of the shell (1) near the bottom box (3); The housing (1) is clamped with a top cover (4) near the top of the top box (2), and the back of the top box (2) is fixedly connected with a rear cover (5), and the housing (1) is provided with a driving assembly (6) and an extrusion assembly (7) on both sides near the top box (2), and the driving assembly (6) includes a servo motor (61) fixed on the rear cover (5); The extrusion assembly (7) comprises a reciprocating screw (71) rotating between the outer shell (1) and the top box (2), and centrifugal assemblies (8) are arranged on all sides of the outer shell (1) close to the top box (2), and the centrifugal assembly (8) comprises a centrifugal barrel (85) arranged on all sides of the inner cavity of the outer shell (1).

2. The solid-liquid separation device for catering wastewater based on environmental protection according to claim 1, characterized in that: The driving assembly (6) further comprises a main synchronous wheel (62) fixed on the output shaft of the servo motor (61), and the outer side of the main synchronous wheel (62) is connected to a slave synchronous wheel (63) through a synchronous belt transmission, the inner cavity of the slave synchronous wheel (63) is fixedly connected to a cross bar (64) that is rotatably matched with the housing (1), and the other end of the cross bar (64) is fixedly connected to a main bevel gear (65), and the outer side of the main bevel gear (65) is meshed with a secondary bevel gear (66).

3. A solid-liquid separation device for catering wastewater based on environmental protection according to claim 2, characterized in that: The extrusion assembly (7) further comprises a screw sleeve (72) threadedly connected to the reciprocating screw (71), and the reciprocating screw (71) and the secondary bevel gear (66) are fixedly connected, both sides of the screw sleeve (72) are fixedly connected with a push seat (73), and the inner side of the push seat (73) is fixedly connected with a push rod (74) that slidably cooperates with the outer shell (1) and the top box (2), the inner side of the push rod (74) is fixedly connected with an extrusion plate (75), and the upper and lower sides of the extrusion plate (75) are fixedly connected with cleaning strips (76).

4. The solid-liquid separation device for restaurant wastewater based on environmental protection according to claim 3, characterized in that: The centrifugal assembly (8) further comprises a vertical rod (82) fixed to the bottom of the differential gear (81) and rotatably matched with the housing (1), and the differential gear (81) is meshed with the main bevel gear (65), a circular gear (83) is fixedly connected to the bottom of the vertical rod (82), a gear ring (84) is meshed on both sides of the circular gear (83), and the gear ring (84) is fixedly connected to the centrifugal bucket (85), and a filter frame (86) is embedded in the inner cavity of the centrifugal bucket (85).

5. The solid-liquid separation device for catering wastewater based on environmental protection according to claim 4 is characterized in that: A coarse filter (10) that slidably cooperates with the cleaning strip (76) is embedded on one side of the top box (2) close to the top cover (4), and a fine filter (11) that slidably cooperates with the cleaning strip (76) is embedded at the bottom of the inner cavity of the top box (2), and an arc-shaped shovel that is used in conjunction with the fine filter (11) is fixedly connected to the bottom of the inner side of the extrusion plate (75).

6. The solid-liquid separation device for restaurant wastewater based on environmental protection according to claim 5, characterized in that: The housing (1) is provided with T-shaped grooves (12) on both sides close to the push seat (73), and the inner cavity of the T-shaped groove (12) is slidably connected with a T-shaped slider (13) fixedly matched with the push seat (73).

7. The solid-liquid separation device for restaurant wastewater based on environmental protection according to claim 6, characterized in that: The bottom of the top box (2) near the fine filter (11) is connected to a sedimentation tray (14), and the sedimentation tray (14) is connected to sewage pipes (15) with one-way valves on all sides.

8. The solid-liquid separation device for catering wastewater based on environmental protection according to claim 7, characterized in that: The centrifugal barrel (85) is provided with an annular slide rail (16) on both the upper and lower sides, and an annular slide rack (17) fixedly matched with the outer shell (1) is rotatably connected inside the annular slide rail (16).

9. The solid-liquid separation device for catering wastewater based on environmental protection according to claim 8, characterized in that: The upper and lower sides of the centrifugal bucket (85) are both connected to a connecting end (18), and the connecting end (18) is rotatably connected to a rotating end (19) and maintains a state of interconnection with each other.

10. The solid-liquid separation device for catering wastewater based on environmental protection according to claim 9, characterized in that: The bottom of the rotating end (19) is connected to a discharge pipe (20) that is connected and matched with the bottom box (3), and the front of the shell (1) is respectively embedded with an upper cover (21) and a lower cover (22) that are used in conjunction with the top box (2) and the bottom box (3).

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