Oil removal and purification device for restaurant sewage

Abstract

The invention relates to the technical field of catering sewage treatment, in particular to an oil removal and purification device for catering sewage, which comprises an oil separation tank body for oil removal and purification of the catering sewage, the oil separation tank body comprises a liquid inlet area, an oil-water separation area, a precipitation area and a water outlet area, a filter net basket is mounted at the top of the liquid inlet area, and the filter net basket is mounted at the bottom of the oil separation tank body. The oil-water separation device further comprises a fishing barrel, the fishing barrel is located above the oil-water separation area, an opening is formed in one side of the fishing barrel, and the fishing barrel is used for fishing suspended scum in the oil-water separation area; the oil removal and purification device for catering sewage can be used for regularly fishing more scum at the separation area, and the fished scum is guided into the storage tank, so that the upper oil surface of the oil-water separation area is kept relatively clean, the oil-water separation space is ensured, the separated oil and water can be fully purified, and the oil removal and purification effect is improved. And the subsequent treatment process is further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of catering wastewater treatment, and in particular to an oil removal and purification device for catering wastewater. Background Art

[0002] Catering wastewater mainly contains organic matter, fat, grease, ammonia nitrogen and other substances. These substances cannot be discharged directly into the natural environment before treatment, otherwise they will cause serious pollution to the water body.

[0003] When the existing catering wastewater is degreased and purified, it first passes through a grease trap to perform preliminary degreasing and purification, that is, the catering wastewater containing grease and impurities is introduced into the filter basket at the grease trap through the water inlet, and the filter basket filters and intercepts larger solid debris. Subsequently, the filtered wastewater passes through the bottom of the first partition and enters the oil-water separation zone. The grease will float on the water surface due to its low density, while the water will pass through the bottom of the second partition and the sedimentation zone and then flow into the water outlet area. However, some grease and suspended matter will float on the water surface to form scum. However, excessive accumulation of scum in the oil-water separation zone will not only reduce the space for oil-water separation, affecting the normal operation of the grease trap and the sewage treatment effect, but also cause the grease and suspended matter to be unable to be effectively separated, increasing the burden of subsequent treatment processes. Summary of the invention

[0004] The object of the present invention is to provide an oil removal and purification device for restaurant wastewater to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil removal and purification device for restaurant sewage, comprising a grease trap body for removing oil and purifying restaurant sewage, the grease trap body comprising a liquid inlet area, an oil-water separation area, a sedimentation area and a water outlet area, a filter basket is installed on the top of the liquid inlet area, and also comprises: A salvage tube, the salvage tube is located above the oil-water separation zone, and one side of the salvage tube is provided with an opening, and the salvage tube is used to salvage the suspended scum in the oil-water separation zone; An introduction mechanism, the introduction mechanism is installed at the overshot, and the introduction mechanism is used to introduce the scum that enters the overshot; A driving mechanism, the driving mechanism being mounted on the outside of the grease trap body and being used to drive the overshot; The storage tank is installed on one side outside the grease trap and is used to recover the scum salvaged from the overshot.

[0006] The two sides of the overshot tube are slidably connected to the inner wall of the oil-water separation zone, and the top, bottom and both sides of the overshot tube opening are all sloped. By setting the surroundings of the opening as slopes, the scum can be introduced.

[0007] Wherein, the introduction mechanism comprises an arc-shaped groove arranged inside the overshot tube, and one end of the arc-shaped groove is connected to the opening; A semicircular plate is slidably connected to the arc groove, one end of the semicircular plate located outside the arc groove is fixedly connected to a closing strip, and a clamping groove that cooperates with the closing strip is installed on the side of the overshot tube away from the arc groove; A fixed cavity is provided inside the overshot tube, the fixed cavity is communicated with the arc groove, and a connecting piece for connecting the semicircular plate is installed at the fixed cavity; A transmission member is installed inside the overshot tube, and a circular opening is provided at one end of the overshot tube corresponding to the storage tank, and the transmission member guides the scum into the storage tank through the circular opening; A closing piece is installed at the circular opening, and the closing piece is used to control the opening and closing of the circular opening, so that the scum can be introduced into the interior of the overshot tube through the introduction mechanism.

[0008] Among them, the connecting member includes a first connecting shaft and a second connecting shaft rotatably connected to the two ends of the fixed cavity, and the first connecting shaft and the second connecting shaft are respectively fixedly connected with the first connecting gear and the second connecting gear, and a plurality of tooth grooves are provided on the semicircular plate, and the first connecting gear and the second connecting gear are respectively meshed and connected with the plurality of tooth grooves, and a driving motor for driving the first connecting shaft is installed inside the fixed cavity, and the function of connecting the semicircular plate is realized through the connecting member.

[0009] The transmission member comprises a transmission shaft having one end rotatably connected to the inner wall of the overshot tube, a spiral blade is installed on the outer side of the transmission shaft, and a rotating member for driving the transmission shaft is installed inside the overshot tube. The transmission member is used to transmit the slag.

[0010] Among them, the rotating member includes a first transmission gear fixedly sleeved on one end of the transmission shaft, and the second transmission gear is meshed and connected to the outer side of the first transmission gear. A accommodating cavity is provided inside the salvage tube, and a rotating motor for driving the second transmission gear is installed in the accommodating cavity. The driving function of the transmission shaft is realized through the rotating member.

[0011] Among them, the closing piece includes a closing plate that is connected to the circular opening, a groove is provided on one side of the salvage tube, and a connecting plate is slidably connected to the groove, and one end of the connecting plate is fixedly connected to the closing plate, and an electric push rod for pushing the connecting plate is installed inside the salvage tube, and the circular opening is opened and closed by the closing piece.

[0012] Wherein, an inclined plate is installed on the top of one side of the grease trap body, and the inclined plate is located outside the storage tank. The inclined plate can ensure that the scum falls stably into the storage tank.

[0013] Wherein, the driving mechanism comprises a top plate, a moving opening is provided on the top plate, and a lifting block is slidably connected to the moving opening, and a lifting member for driving the lifting block is installed on the top plate; The bottom of the lifting block is rotatably connected with a rotating shaft, and a fixed groove is provided on the lifting block, a rotating member for rotating the rotating shaft is installed at the fixed groove, and both ends of the rotating shaft are fixedly connected with synchronous blocks, and one end of the two synchronous blocks is fixedly connected to the overshot tube; The two sides of the top plate are respectively fixedly connected with a first guide frame and a second guide frame, the first guide frame is slidably connected with a slide rod, and the slide rod is fixedly installed on the outer side of the grease trap body; A movable screw is threadedly connected to the second guide frame, and the movable screw is located below the inclined plate. Connecting ears are rotatably connected to both ends of the movable screw, and the two connecting ears are fixedly connected to the inclined plate. A positioning piece for driving the movable screw is installed on the outside of the oil separator body, and the driving mechanism is provided to drive the salvage tube.

[0014] Among them, the rotating part includes a rotating motor installed inside a fixed groove, the output end of the rotating motor is fixedly connected to a first rotating gear, the outer side of the first rotating gear is transmission-connected to a gear chain, the inner side of the gear chain is transmission-connected to a second rotating gear, and the second rotating gear is fixedly sleeved on the outer side of the rotating shaft, and the rotating shaft is driven by the rotating part.

[0015] The present invention has at least the following beneficial effects: When the present invention is in use, a salvage tube is provided above the oil-water separation zone. The salvage tube can regularly salvage more scum in the separation zone through the introduction mechanism and the driving mechanism provided thereon, and the salvaged scum is introduced into the storage tank, thereby ensuring that the upper oil surface in the oil-water separation zone remains relatively clean, while ensuring the space for oil and water separation, and the oil and water can be fully purified after separation, further ensuring the subsequent treatment process.

[0016] When the present invention is in use, the overshot tube can not only salvage the scum, but also scrape off the suspended matter on the inner wall of the grease trap body in the oil-water separation zone, thereby ensuring the overall stable operation of the grease trap body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the grease trap body of the present invention; Figure 3 It is a schematic diagram of the rear view structure of the grease trap body of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area; Figure 5 It is a schematic diagram of the structure of the driving mechanism of the present invention; Figure 6 This is a schematic diagram of the lifting block structure of the present invention; Figure 7 It is a rear view structural schematic diagram of the overshot of the present invention; Figure 8 It is a schematic diagram of the structure of the rotating part of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the overshot of the present invention; Fig.10 It is a schematic diagram of the closed state between the semicircular plate and the overshot tube of the present invention; Fig.11 It is a schematic diagram of the semicircular plate structure of the present invention.

[0018] In the figure: 1-grease trap body; 11-liquid inlet area; 12-oil-water separation area; 13-sedimentation area; 14-water outlet area; 15-filter basket; 2-fishing tube; 21-opening; 22-arc groove; 23-card slot; 24-fixed cavity; 25-circular opening; 26-accommodating cavity; 3-introduction mechanism; 31-semicircular plate; 311-tooth groove; 32-closing strip; 33-connecting member; 331-first connecting shaft; 332-second connecting shaft; 333-first connecting gear; 334-second connecting gear; 335-driving motor; 34-transmission member; 341-transmission shaft; 342-spiral blade; 35-closing member; 351-closing plate; 352-connecting plate; 353-electric push rod; 4-driving mechanism; 41-top plate; 4 11-moving opening; 42-lifting block; 421-fixed slot; 422-moving slot; 43-lifting member; 431-lifting motor; 432-lifting gear; 433-lifting rack; 44-rotating shaft; 45-rotating member; 451-rotating motor; 452-first rotating gear; 453-gear chain; 454-second rotating gear; 46-synchronizing block; 47-first guide frame; 48-second guide frame; 49-sliding rod; 491-moving screw rod; 492-connecting ear; 5-storage tank; 6-rotating member; 61-first transmission gear; 62-second transmission gear; 63-rotating motor; 7-inclined plate; 8-positioning member; 81-positioning motor; 82-synchronous belt; 83-first positioning gear; 84-second positioning gear. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0020] See also Figures 1 to 4 and Figures 6 to 11 A degreasing and purifying device for restaurant sewage comprises a grease trap body 1 for degreasing and purifying restaurant sewage, the grease trap body 1 comprises a liquid inlet area 11, an oil-water separation area 12, a sedimentation area 13 and a water outlet area 14, a filter basket 15 is installed on the top of the liquid inlet area 11, and comprises: The overshot tube 2 is located above the oil-water separation zone 12. The interior of the overshot tube 2 is circular, and an opening 21 is provided on one side of the overshot tube 2. The overshot tube 2 is used to salvage the suspended scum in the oil-water separation zone 12. Both sides of the overshot tube 2 are slidably connected to the inner wall of the oil-water separation zone 12. The top, bottom and both sides of the opening 21 of the overshot tube 2 are all slope-shaped. The surroundings of the opening 21 are all slope-shaped. The scum in the oil-water separation zone 12 can be introduced through the bottom or top position. The slope-shaped settings on both sides of the opening 21 contact the inner wall of the oil separator body 1 in the oil-water separation zone 12 through the outer wall of the overshot tube 2, thereby scraping off the scum and other impurities on the inner wall of the oil-water separation zone 12. An introduction mechanism 3, which is installed at the overshot 2 and is used to introduce the scum that enters the overshot 2; The storage tank 5 is installed on one side of the outside of the grease trap, and the storage tank 5 is used to recover the scum salvaged from the overshot tube 2.

[0021] The introduction mechanism 3 includes an arc-shaped groove 22 disposed inside the overshot tube 2, and one end of the arc-shaped groove 22 is connected to the opening 21; A semicircular plate 31 is slidably connected to the arc groove 22. Since the interior of the overshot tube 2 is arranged in a circular shape, when the closing strip 32 of the semicircular plate 31 rotates to the clamping groove 23, it can form a circular closed state with the overshot tube 2. The closing strip 32 is fixedly connected to one end of the semicircular plate 31 located outside the arc groove 22. A clamping groove 23 cooperating with the closing strip 32 is installed on the overshot tube 2 on the side away from the arc groove 22. That is, when the end of the semicircular plate 31 corresponding to the closing strip 32 rotates to the clamping groove 23, the semicircular plate 31 can play a role in relatively closing the opening 21. A fixed cavity 24 is provided inside the overshot tube 2, and the fixed cavity 24 is communicated with the arc groove 22. A connecting piece 33 for connecting the semicircular plate 31 is installed at the fixed cavity 24; The connecting member 33 includes a first connecting shaft 331 and a second connecting shaft 332 which are rotatably connected to both ends of the fixed cavity 24, and a first connecting gear 333 and a second connecting gear 334 are fixedly connected to the first connecting shaft 331 and the second connecting shaft 332, respectively. A plurality of tooth grooves 311 are provided on the semicircular plate 31, and the first connecting gear 333 and the second connecting gear 334 are respectively meshed and connected with the plurality of tooth grooves 311. A driving motor 335 for driving the first connecting shaft 331 is installed inside the fixed cavity 24; Specific implementation process: After the scum in the water-oil separation zone is separated, the scum enters the inside of the salvage tube 2, and when the scum inside the salvage tube 2 is accumulated more, the driving motor 335 is operated, so that the first connecting shaft 331 drives the first connecting gear 333 to rotate, and when the first connecting gear 333 rotates, it meshes with the multiple tooth grooves 311 on the semicircular plate 31, so that under the auxiliary action of the second connecting gear 334, the semicircular plate 31 is further moved along the arc groove 22, until the closing strip 32 at one end of the semicircular plate 31 moves to the card groove 23, and then the driving motor 335 stops running, and the semicircular plate 31 realizes the function of closing the opening 21 A transmission member 34 is installed inside the overshot tube 2. A circular opening 25 is provided at one end of the overshot tube 2 corresponding to the storage tank 5. The transmission member 34 guides the scum into the storage tank 5 through the circular opening 25. The transmission member 34 includes a transmission shaft 341 with one end rotatably connected to the inner wall of the overshot tube 2, a spiral blade 342 is installed on the outer side of the transmission shaft 341, and a rotating member 6 for driving the transmission shaft 341 is installed inside the overshot tube 2. The rotating member 6 includes a first transmission gear 61 fixedly sleeved on one end of the transmission shaft 341, and a second transmission gear 62 is meshedly connected on the outer side of the first transmission gear 61. An accommodating chamber 26 is provided inside the overshot tube 2. At the same time, a limiting groove is provided at the position of the semicircular plate 31 corresponding to the accommodating chamber 26 so that it is not affected by the accommodating chamber 26, and a rotating motor 63 for driving the second transmission gear 62 is installed at the accommodating chamber 26; Specific implementation process: After the semicircular plate 31 closes the opening 21, the second transmission gear 62 drives the first transmission gear 61 to rotate by rotating the motor 63. When the first transmission gear 61 rotates, the synchronous belt 82 drives the transmission shaft 341 to rotate, so that the spiral blade 342 drives the scum between the semicircular plate 31 and the salvage tube 2 to be introduced into the circular opening 25.

[0022] A closing member 35 is installed at the circular opening 25, and the closing member 35 is used to control the opening and closing of the circular opening 25. The closing member 35 includes a closing plate 351 that is connected to the circular opening 25, that is, the closing plate 351 can maintain a relatively sealed state with the circular opening 25. A groove is provided on one side of the salvage tube 2, and a connecting plate 352 is slidably connected to the groove, and one end of the connecting plate 352 is fixedly connected to the closing plate 351. An electric push rod 353 for pushing the connecting plate 352 is installed inside the salvage tube 2.

[0023] Specific implementation process: when the salvage tube 2 guides the scum into the storage tank 5, the salvage tube 2 is relatively located above the storage tank 5, and then, the electric push rod 353 is operated, so that the connecting plate 352 drives the closing plate 351 to move, so that the closing plate 351 moves out of the circular opening 25, and the scum is further dropped into the storage tank 5 through the circular opening 25 under the rotation of the spiral blade 342.

[0024] The driving mechanism 4 is installed on the outside of the grease trap body 1 and is used to drive the salvage tube 2 ; an inclined plate 7 is installed on the top of one side of the grease trap body 1 and the inclined plate 7 is located outside the storage tank 5 .

[0025] The driving mechanism 4 includes a top plate 41, a moving opening 411 is provided on the top plate 41, and a lifting block 42 is slidably connected to the moving opening 411, and a lifting member 43 for driving the lifting block 42 is installed on the top plate 41; The bottom of the lifting block 42 is rotatably connected with a rotating shaft 44, and a fixed groove 421 is provided on the lifting block 42, and a rotating member 45 for rotating the rotating shaft 44 is installed at the fixed groove 421, and the two ends of the rotating shaft 44 are respectively fixedly connected with synchronous blocks 46, and one end of the two synchronous blocks 46 is fixedly connected to the overshot tube 2, and the rotating member 45 includes a rotating motor 451 installed inside the fixed groove 421, and the output end of the rotating motor 451 is fixedly connected with a first rotating gear 452, and the outer side of the first rotating gear 452 is transmission-connected with a gear chain 453, and the inner side of the gear chain 453 is transmission-connected with a second rotating gear 454, and the second rotating gear 454 is fixedly sleeved on the outer side of the rotating shaft 44; The implementation process is as follows: In this embodiment, a lifting member 43 is provided, so that when the overshot tube 2 regularly separates the scum in the oil-water separation zone 12, the lifting member 43 is operated to make one side of the overshot tube 2 drop to a certain height along the liquid surface at the oil-water separation zone 12. At this time, the overshot tube 2 is in a state of opening 21, and the overshot tube 2 is horizontally moved relative to the oil-water separation zone 12 to achieve the function of salvaging the scum, and the scum enters the inside of the overshot tube 2. When the overshot tube 2 moves a certain distance in one direction, such as from the left side to the right side of the oil-water separation zone 12, the semicircular plate 31 closes the opening 21, and then, driven by the lifting member 43, the overshot tube 2 is It moves upward relative to the oil-water separation area 12 until the circular opening 25 moves above the inclined plate 7, then the closing plate 351 opens, thereby guiding the scum into the storage tank 5, and then, the circular opening 25 is closed, and then, driven by the rotating member 45, the rotating shaft 44 is further rotated 180°, that is, the overshot 2 with the opening 21 facing the right side is rotated 180° counterclockwise, then the overshot 2 is with the opening 21 facing the left side, and the overshot 2 moves downward, and then, the overshot 2 is in an open state with the opening 21, and moves from the right side to the left side along the oil-water separation area 12, thereby realizing the collection of the remaining scum again, which is a salvage process, and the function of regularly salvaging the scum in the oil-water separation area 12 is realized.

[0026] A first guide frame 47 and a second guide frame 48 are fixedly connected to both sides of the top plate 41, and a slide bar 49 is slidably connected to the first guide frame 47, and the slide bar 49 is fixedly installed on the outer side of the grease trap body 1; A movable screw rod 491 is threadedly connected to the second guide frame 48, and the movable screw rod 491 is located below the inclined plate 7. Connecting ears 492 are rotatably connected to the two ends of the movable screw rod 491. The two connecting ears 492 are fixedly connected to the inclined plate 7. A positioning member 8 for driving the movable screw rod 491 is installed on the outside of the oil separator body 1. In this embodiment, the positioning member 8 is preferably installed on the outside of the oil separator body 1. The output end of the positioning motor 81 is fixedly connected to a first positioning gear 83. The outer side of the first positioning gear 83 is transmission-connected to a synchronous belt 82, and the inner side of the synchronous belt 82 is transmission-connected to a second positioning gear 84. The second positioning gear 84 is fixedly connected to one end of the movable screw rod 491, so that the first positioning gear 83 is driven through the synchronous belt 82 through the operation of the positioning motor 81, and the second positioning gear 84 is further driven to rotate. When the second positioning gear 84 rotates, the movable screw rod 491 is further rotated on the outside of the oil separator body 1.

[0027] Specific implementation process: The positioning motor 81 is operated to further make the first positioning gear 83 rotate through the synchronous belt 82, thereby driving the second positioning gear 84 to rotate, and further making the movable screw 491 rotate relative to the outer side of the oil separator body 1, and providing driving force for the second guide frame 48. Due to the limiting effect of the top plate 41, the first guide frame 47 and the slide rod 49, the first guide frame 47 and the second guide frame 48 further drive the salvage tube 2 at the top plate 41 to move from the left side to the right side along the oil-water separation area 12, or to move horizontally from the right side to the left side. Embodiment 2

[0028] See also Figure 5 , Embodiment 2 is a further supplementary description of the lifting member 43 in Embodiment 1, specifically: the lifting member 43 includes a lifting motor 431 respectively installed on both sides of the moving port 411, a lifting gear 432 is fixedly connected to the output end of the lifting motor 431, a lifting rack 433 is meshedly connected to the outer side of the lifting gear 432, and a moving groove 422 is provided on both sides of the lifting block 42, and the lifting rack 433 is installed at the moving groove 422; Therefore, when the lifting block 42 is driven, the two lifting motors 431 operate synchronously, so that the two lifting gears 432 rotate synchronously. When the lifting gears 432 rotate synchronously, the lifting rack 433 further drives the lifting block 42 to move upward or downward along the moving opening 411, thereby realizing the function of driving the lifting block 42.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil removal and purification device for restaurant wastewater, comprising a grease trap body (1) for removing oil from restaurant wastewater, the grease trap body (1) comprising a liquid inlet area (11), an oil-water separation area (12), a sedimentation area (13) and a water outlet area (14), a filter basket (15) being installed at the top of the liquid inlet area (11), characterized in that: Also included are: A salvage tube (2), the salvage tube (2) being located above the oil-water separation zone (12), and having an opening (21) on one side of the salvage tube (2), the salvage tube (2) being used to salvage suspended scum in the oil-water separation zone (12); An introduction mechanism (3), the introduction mechanism (3) being installed at the overshot (2), and the introduction mechanism (3) being used to introduce scum that has entered the interior of the overshot (2); A driving mechanism (4), wherein the driving mechanism (4) is mounted on the outside of the grease trap body (1), and the driving mechanism (4) is used to drive the overshot tube (2); A storage tank (5), wherein the storage tank (5) is installed on one side outside the grease trap, and the storage tank (5) is used to recover scum salvaged from the overshot tube (2).

2. The oil removal and purification device for restaurant wastewater according to claim 1, characterized in that: Both sides of the overshot tube (2) are slidably connected to the inner wall of the oil-water separation zone (12), and the top, bottom and both sides of the opening (21) of the overshot tube (2) are all arranged in a sloped manner.

3. The oil removal and purification device for restaurant wastewater according to claim 1, characterized in that: The introduction mechanism (3) comprises an arc-shaped groove (22) arranged inside the overshot tube (2), and one end of the arc-shaped groove (22) is connected to the opening (21); A semicircular plate (31) is slidably connected to the arc-shaped groove (22); one end of the semicircular plate (31) located outside the arc-shaped groove (22) is fixedly connected to a closing strip (32); a clamping groove (23) cooperating with the closing strip (32) is installed on the side of the overshot tube (2) away from the arc-shaped groove (22); A fixed cavity (24) is provided inside the overshot tube (2), the fixed cavity (24) is in communication with the arc-shaped groove (22), and a connecting piece (33) for connecting the semicircular plate (31) is installed in the fixed cavity (24); A transmission member (34) is installed inside the overshot tube (2), and a circular opening (25) is provided at one end of the overshot tube (2) corresponding to the storage tank (5), and the transmission member (34) guides the scum into the storage tank (5) through the circular opening (25); A closing member (35) is installed at the circular opening (25), and the closing member (35) is used to control the opening and closing of the circular opening (25).

4. The oil removal and purification device for restaurant wastewater according to claim 3, characterized in that: The connecting member (33) comprises a first connecting shaft (331) and a second connecting shaft (332) which are rotatably connected to two ends of the fixed cavity (24); a first connecting gear (333) and a second connecting gear (334) are respectively fixedly connected to the first connecting shaft (331) and the second connecting shaft (332); a plurality of tooth grooves (311) are provided on the semicircular plate (31); the first connecting gear (333) and the second connecting gear (334) are respectively meshed and connected with the plurality of tooth grooves (311); and a driving motor (335) for driving the first connecting shaft (331) is installed inside the fixed cavity (24).

5. The oil removal and purification device for restaurant wastewater according to claim 3, characterized in that: The transmission member (34) comprises a transmission shaft (341) having one end rotatably connected to the inner wall of the overshot tube (2), a spiral blade (342) being mounted on the outside of the transmission shaft (341), and a rotating member (6) for driving the transmission shaft (341) being mounted inside the overshot tube (2).

6. The oil removal and purification device for restaurant wastewater according to claim 5, characterized in that: The rotating member (6) comprises a first transmission gear (61) fixedly sleeved on one end of a transmission shaft (341), a second transmission gear (62) being meshingly connected to the outer side of the first transmission gear (61), an accommodating chamber (26) being provided inside the overshot tube (2), and a rotating motor (63) for driving the second transmission gear (62) being installed in the accommodating chamber (26).

7. The oil removal and purification device for restaurant wastewater according to claim 3, characterized in that: The closing member (35) comprises a closing plate (351) which is connected to the circular opening (25); a groove is provided on one side of the salvage tube (2); a connecting plate (352) is slidably connected to the groove; one end of the connecting plate (352) is fixedly connected to the closing plate (351); and an electric push rod (353) for pushing the connecting plate (352) is installed inside the salvage tube (2).

8. The oil removal and purification device for restaurant wastewater according to claim 1, characterized in that: An inclined plate (7) is installed on the top of one side of the grease trap body (1), and the inclined plate (7) is located outside the storage tank (5).

9. The oil removal and purification device for restaurant wastewater according to claim 1, characterized in that: The driving mechanism (4) comprises a top plate (41), a moving opening (411) is provided on the top plate (41), a lifting block (42) is slidably connected to the moving opening (411), and a lifting member (43) for driving the lifting block (42) is installed on the top plate (41); The bottom of the lifting block (42) is rotatably connected to a rotating shaft (44), and a fixing groove (421) is provided on the lifting block (42). A rotating member (45) for rotating the rotating shaft (44) is installed at the fixing groove (421). Both ends of the rotating shaft (44) are respectively fixedly connected to synchronous blocks (46), and one end of each of the two synchronous blocks (46) is fixedly connected to the salvage tube (2); A first guide frame (47) and a second guide frame (48) are fixedly connected to both sides of the top plate (41), respectively; a slide rod (49) is slidably connected to the first guide frame (47), and the slide rod (49) is fixedly mounted on the outside of the grease trap body (1); A movable screw (491) is threadedly connected to the second guide frame (48), and the movable screw (491) is located below the inclined plate (7). Connecting ears (492) are rotatably connected to both ends of the movable screw (491), and the two connecting ears (492) are fixedly connected to the inclined plate (7). A positioning member (8) for driving the movable screw (491) is installed on the outer side of the oil separator body (1).

10. The oil removal and purification device for restaurant wastewater according to claim 9, characterized in that: The rotating member (45) comprises a rotating motor (451) installed inside the fixing groove (421); the output end of the rotating motor (451) is fixedly connected to a first rotating gear (452); the outer side of the first rotating gear (452) is transmission-connected to a gear chain (453); the inner side of the gear chain (453) is transmission-connected to a second rotating gear (454); and the second rotating gear (454) is fixedly sleeved on the outer side of the rotating shaft (44).

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