A treatment device for restaurant sewage

Abstract

The present invention discloses a treatment device for catering sewage, specifically relating to the field of sewage treatment technology, including a treatment box, wherein the upper portion of the inner surface of the treatment box is provided with a kitchen waste separation structure, the middle portion of the inner surface of the treatment box is provided with a sedimentation separation structure, the portion of the inner surface of the treatment box located in front of the sedimentation separation structure is provided with a grease separation structure, and either side of the treatment box is fixedly mounted with an oil removal auxiliary structure that is in communication with the inner cavity of the grease separation structure. The treatment device for catering sewage described in the present invention separates large pieces of kitchen waste through a coarse mesh screen in an L-shaped inclined plate one, further precipitates them in an L-shaped inclined plate two through the action of a slow flow plate, and separates these suspended solids through the action of a suspended solids separation structure, and further, through the cooperation of an aeration component and an air pump provided at the bottom of the grease separation chamber, the suspended emulsified oil is sent to the upper layer of the sewage and sent to the grease chamber through the action of an oil discharge component.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a treatment device for restaurant sewage. Background Art

[0002] With rapid economic development and improved living standards, the catering industry has expanded rapidly, and the amount of catering wastewater discharged has also increased. Catering wastewater has a complex composition, containing large amounts of suspended solids, organic matter, oil, grease, nitrogen, phosphorus, and other pollutants. If these pollutants are discharged directly into the environment, they can cause serious water pollution, impacting the ecological environment and human health. Therefore, the effective treatment of catering wastewater has become a key task in environmental protection.

[0003] Currently, common restaurant wastewater treatment systems on the market suffer from several shortcomings, particularly in grease separation. While traditional oil-water separators can remove some grease, their efficiency is low, preventing them from completely separating the fine oil droplets in the wastewater. Furthermore, some systems are susceptible to interference from suspended matter and impurities during the treatment process, resulting in unstable grease separation. This inadequate grease separation not only affects effluent quality but can also increase the burden on subsequent treatment processes and costs. Summary of the Invention

[0004] The main purpose of the present invention is to provide a treatment device for restaurant wastewater, which can effectively solve the problem that existing restaurant wastewater treatment devices cannot effectively separate impurities and grease in wastewater.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A treatment device for catering wastewater, comprising a treatment box, a water pump fixedly installed at the front end of the treatment box, a kitchen waste separation structure provided at the upper part of the inner surface of the treatment box, a sedimentation separation structure provided at the middle part of the inner surface of the treatment box, a grease separation structure provided at the part of the inner surface of the treatment box located in front of the sedimentation separation structure, an oil removal auxiliary structure connected to the inner cavity of the grease separation structure fixedly installed on either side of the treatment box, a sewage cavity is provided in the lower part of the inner cavity of the treatment box, a grease cavity is provided in the part of the inner cavity of the treatment box located in front of the grease separation structure, a water pump output end is fixedly connected to a second water pipe, and a water pump input end is fixedly connected to a first water pipe that passes through the bottom wall of the grease cavity and extends to the lower part of the sewage cavity.

[0007] Preferably, the food waste separation structure includes a water inlet channel opened at the upper end of the processing box, the inner surface of the processing box located at the rear side of the water inlet channel is fixedly connected to an L-shaped inclined plate 1, the inner surface of the inclined part of the L-shaped inclined plate 1 is fixedly connected to a coarse mesh screen, and the rear end of the vertical part of the water inlet channel and the inner surface of the processing box are slidably connected to a food waste recovery bucket.

[0008] Preferably, the sedimentation separation structure includes a sedimentation chamber opened in the inner surface of the processing box located below the inclined portion of the coarse mesh screen, the inner surface of the sedimentation chamber is fixedly connected with an L-shaped inclined plate 2 parallel to the L-shaped inclined plate 1, the vertical portion of the L-shaped inclined plate 2 is slidably connected to the bottom wall of the inner surface of the sedimentation chamber with a sediment recovery bucket, the upper portion of the inner surface of the sedimentation chamber is fixedly connected with a slow flow plate, and a number of through holes connected to the lower end are opened on the left and right sides and rear side of the upper end of the slow flow plate.

[0009] Preferably, the grease separation structure includes a suspended matter recovery bucket located at the lower side of the second L-shaped inclined plate and slidably connected to the inner surface of the sedimentation chamber, and a grease separation chamber opened on the front side of the sedimentation chamber, the upper part of the inner cavity of the grease separation chamber is connected to the part of the sedimentation chamber located at the upper end of the second L-shaped inclined plate, the upper part of the inner surface of the grease separation chamber is fixedly connected to the overflow plate, the lower end of the overflow plate is fixedly connected to the suspended matter separation structure, the lower end of the suspended matter separation structure is fixedly connected to the oil drain assembly, and one end of the processing box is fixedly connected to a drive motor that is transmission-connected to the suspended matter separation structure.

[0010] Preferably, the oil removal auxiliary structure includes an air pump fixedly connected to either side of the processing box, the output end of the air pump is fixedly connected to an air pipe, and the inner cavity of the oil separation chamber is rotatably connected to an aeration component connected to the air pipe.

[0011] Preferably, the overflow plate is concave and a baffle 1 is fixedly connected to the middle of its inner surface, the part of the overflow plate located on the lower side of the baffle is symmetrically fixed to a baffle 2, and the bottom wall of the inner surface of the overflow plate located between the two baffles 2 is provided with two rows of overflow holes connected to the lower end of the overflow plate.

[0012] Preferably, the suspended matter separation structure includes a mounting frame fixedly connected to the lower end of the overflow plate, both sides of the upper end of the mounting frame are inclined surfaces and the inner surfaces thereof are fixedly connected to fine mesh screens, the left and right ends of the mounting frame are symmetrically fixedly connected to connecting blocks, the inner surfaces of the two connecting blocks are fixedly installed with conveyor belts, the driving motor is connected to the conveyor belts on both sides through a transmission shaft, and the rear part of the inner surface of the grease separation chamber that is horizontal to the upper end of the conveyor belt is symmetrically provided with connecting ports with the same width as the connecting blocks, the connecting ports are connected to the sedimentation chamber and are located on the upper side of the suspended matter recovery barrel.

[0013] Preferably, the oil drainage assembly includes a square frame located on the lower side of the connecting block and in close contact with the inner surface of the grease separation chamber. The upper end of the square frame is fixedly connected to a plurality of telescopic connecting rods fixedly connected to the lower end of the connecting block in a rectangular distribution. An overflow port communicating with its inner cavity is provided on the upper side of the inner surface of the square frame. An airbag is fixedly connected to the inner surface of the square frame. The front part of the lower end of the square frame is fixedly connected to an oil drainage pipe communicating with the inner cavity of the grease chamber and the inner cavity of the square frame.

[0014] Preferably, a cross connecting groove connected to the sewage chamber is provided at the front of the inner cavity of the grease separation chamber, and a baffle three is slidably connected to the inner surface of the cross connecting groove. The upper end of the baffle three is symmetrically fixedly connected to an L-shaped connecting rod fixedly connected to the upper end of the telescopic connecting rod, and a groove adapted to the horizontal part of the L-shaped connecting rod is provided at the front part of the inner surface of the grease separation chamber located on the upper side of the telescopic connecting rod.

[0015] Preferably, the aeration assembly includes a rotating seat rotatably connected to the rear bottom wall of the grease separation chamber and connected to the air pipe, the upper end of the rotating seat is fixedly connected to an aeration head, the upper end of the aeration head is fixedly connected to a dispersion turntable, a plurality of stirring rods are fixedly connected to the outer surface of the aeration head in an annular distribution, a plurality of connecting pipes connected to its inner cavity are fixedly connected to the outer surface of the rotating seat in an annular distribution, and the outer surfaces of the plurality of connecting pipes are fixedly connected to one-way nozzles connected to their inner cavity, and the one-way nozzles are obliquely distributed relative to the bottom wall of the grease separation chamber and have the same inclination angle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention separates large pieces of kitchen waste from catering wastewater through the coarse mesh screen in the L-shaped inclined plate 1 and stores it in the kitchen waste recovery bucket. Further, the sewage slowly enters the L-shaped inclined plate 2 through the action of the slow flow plate, and then settles in the L-shaped inclined plate 2 to separate the heavier sediments in the sewage. Simultaneously, the sewage containing suspended matter is sent to the suspended matter separation structure for further treatment through the overflow plate, and these suspended matter are sent to the suspended matter recovery bucket for temporary storage through the action of the suspended matter separation structure. Furthermore, through the cooperation of the aeration component and the air pump arranged at the bottom of the grease separation chamber, the suspended emulsified oil is sent to the upper layer of the sewage and sent into the grease chamber through the action of the oil discharge component. The sewage is sent into the sewage chamber through the action of the oil discharge component to wait for the next step of treatment.

[0018] 2. The present invention evenly delivers sewage to the top of the fine mesh screen through the baffle 2 and the overflow hole provided on the overflow plate, and causes the sewage to pass through the fine mesh screen and fall into the grease separation chamber below by gravity. Furthermore, the separated suspended matter is flushed to the upper layer of the conveyor belt by the impact of the water flow. The conveyor belt is driven by the action of the drive motor on the conveyor belt and the suspended matter is sent to the suspended matter recovery barrel for storage through the connecting port to avoid affecting the subsequent sewage treatment.

[0019] 3. The present invention uses the aeration component to spray bubbles into the oily wastewater in the grease separation chamber, and utilizes the flotation effect to make the emulsified oil suspended in the wastewater adhere to the bubbles and rise with the bubbles, thereby bringing the emulsified oil above the wastewater surface.

[0020] 4. The sewage in the grease separation chamber of the present invention surges due to the action of bubbles, whereby the sewage containing oil on the surface enters the inner side of the square frame through the overflow port on the square frame suspended on the upper layer of the liquid surface, and enters the grease chamber through the oil drain pipe connecting the square frame and the grease chamber, thereby treating the grease mixed in the sewage. The cooperation between the square frame and the L-shaped connecting rod drives the baffle plate 3 to slide upward in the cross connecting groove, connecting the grease separation chamber with the sewage chamber, and sending the treated oil-contaminated lower water into the sewage chamber for storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic cross-sectional structural diagram of the processing box of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the precipitation separation structure of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the grease separation structure and the oil removal auxiliary structure of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the overflow plate and the suspended matter separation structure of the present invention;

[0026] Figure 6 Schematic diagram of the position of the communication port of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the aeration assembly of the present invention;

[0028] Figure 8 It is a schematic diagram of the position of the cross connecting groove of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the oil discharge assembly of the present invention;

[0030] Figure 10 For the present invention Figure 8 A magnified schematic diagram of the local structure at point A.

[0031] In the figure: 1. Treatment box; 11. Sewage chamber; 12. Grease chamber; 2. Food waste separation structure; 21. Water inlet channel; 22. L-shaped inclined plate 1; 23. Coarse mesh screen; 24. Food waste recovery bin; 3. Sedimentation separation structure; 31. L-shaped inclined plate 2; 32. Sediment recovery bin; 33. Slow flow plate; 331. Through hole; 34. Sedimentation chamber; 4. Grease separation structure; 41. Overflow plate; 411. Baffle 1; 412. Overflow hole; 413. Baffle 2; 42. Suspended matter recovery bin; 43. Grease separation chamber; 44. Drive motor; 45. Suspended matter separation structure; 451. Mounting frame; 452 , connecting block; 453, conveyor belt; 454, fine mesh screen; 455, connecting port; 46, oil drain assembly; 461, telescopic connecting rod; 462, square frame; 463, overflow port; 464, air bag; 465, L-shaped connecting rod; 466, baffle three; 467, cross connecting groove; 468, oil drain pipe; 5, oil removal auxiliary structure; 51, air pump; 52, air supply pipe; 53, aeration assembly; 531, rotating seat; 532, connecting pipe; 533, one-way nozzle; 534, aeration head; 535, stirring rod; 536, dispersion turntable; 6, water pump; 61, water pipe one; 62, water pipe two DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] Example 1, as Figure 1 As shown, a treatment device for catering wastewater includes a treatment box 1, a water pump 6 is fixedly installed at the front end of the treatment box 1, a kitchen waste separation structure 2 is provided on the upper part of the inner surface of the treatment box 1, a sedimentation separation structure 3 is provided in the middle part of the inner surface of the treatment box 1, a grease separation structure 4 is provided on the part of the inner surface of the treatment box 1 located in front of the sedimentation separation structure 3, and an oil removal auxiliary structure 5 connected with the inner cavity of the grease separation structure 4 is fixedly installed on either side of the treatment box 1.

[0034] It should be noted that the above-mentioned water pump 6 is a conventional pump, which is used to extract the treated sewage in the sewage chamber 11 through water pipe 1 61 and send it to the next process for further treatment through water pipe 2 62. It is a conventional technical means in the prior art. In the present invention, it is only used to realize the function of transporting treated sewage, and its installation method, operating principle and wiring method are not described in detail.

[0035] Further, in order to treat large pieces of kitchen waste in restaurant wastewater, refer to Figure 2The food waste separation structure 2 includes a water inlet channel 21 opened at the upper end of the processing box 1. The inner surface of the processing box 1 located at the rear side of the water inlet channel 21 is fixedly connected to an L-shaped inclined plate 22, and the inner surface of the inclined part of the L-shaped inclined plate 22 is fixedly connected to a coarse mesh screen 23. The rear end of the vertical part of the water inlet channel 21 and the inner surface of the processing box 1 are slidably connected to a food waste recovery bucket 24.

[0036] The sewage containing kitchen waste will flow backward through the water inlet channel 21 and enter the top of the L-shaped inclined plate 22. The gap of the L-shaped inclined plate 22 is relatively large. The sewage and the suspended matter, small particles of impurities and grease contained therein will pass through the L-shaped inclined plate 22 and enter the sedimentation separation structure 3 below, while large pieces of meat, food residues and other impurities will roll down along the slope and enter the kitchen waste recovery bin 24 below for temporary storage under the impact of the water flow.

[0037] Further, in order to achieve the treatment of small particle sediments in sewage, refer to Figure 2 and Figure 3 The sedimentation and separation structure 3 includes a sedimentation chamber 34 opened on the inner surface of the processing box 1 at the lower side of the inclined part of the coarse mesh screen 23. The inner surface of the sedimentation chamber 34 is fixedly connected with an L-shaped inclined plate 21 parallel to the L-shaped inclined plate 1 22. The vertical part of the L-shaped inclined plate 21 and the bottom wall of the inner surface of the sedimentation chamber 34 are slidably connected with a sediment recovery bucket 32. The upper part of the inner surface of the sedimentation chamber 34 is fixedly connected with a slow flow plate 33. The upper side of the slow flow plate 33 is provided with a plurality of through holes 331 connected to the lower end on both sides and the rear side of the upper end.

[0038] When water and grease enter the top of the slow-flow plate 33, they will flow backward and pass through the through hole 331 to enter the top of the L-shaped inclined plate 2 31 below, and gradually accumulate and precipitate on the top of the L-shaped inclined plate 2 31. Among them, impurities with higher density and heavier mass will gradually move downward along the inclined surface of the L-shaped inclined plate 2 31 due to precipitation and enter the sediment recovery barrel 32, while light grease and minced meat will float in the sewage and slowly enter the grease separation structure 4 for further processing.

[0039] Furthermore, in order to treat the substances such as meat paste and grease flocculants in the sewage, and to cooperate with the oil removal auxiliary structure 5 to treat the grease suspended on the surface of the sewage, refer to Figure 4The grease separation structure 4 includes a suspended matter recovery bucket 42 located on the lower side of the L-shaped inclined plate 31 and slidably connected to the inner surface of the sedimentation chamber 34, and a grease separation chamber 43 opened on the front side of the sedimentation chamber 34. The upper part of the inner cavity of the grease separation chamber 43 is connected to the part of the sedimentation chamber 34 located at the upper end of the L-shaped inclined plate 31. The upper part of the inner surface of the grease separation chamber 43 is fixedly connected to the overflow plate 41, the lower end of the overflow plate 41 is fixedly connected to the suspended matter separation structure 45, and the lower end of the suspended matter separation structure 45 is fixedly connected to the oil discharge assembly 46. One end of the processing box 1 is fixedly connected to a drive motor 44 that is transmission-connected to the suspended matter separation structure 45.

[0040] The sewage containing meat paste and grease will first enter the overflow plate 41, and will be evenly sent to the suspended matter separation structure 45 through the action of the overflow plate 41. The suspended matter separation structure 45 will separate the meat paste and small particles of impurities and send them to the suspended matter recovery barrel 42 for temporary storage to avoid the accumulation of impurities affecting the subsequent sewage treatment. The sewage containing grease will enter the grease separation chamber 43.

[0041] Furthermore, in order to make the suspended emulsified oil rise and float to the surface of the sewage, refer to Figure 4 The oil removal auxiliary structure 5 includes an air pump 51 fixedly connected to either side of the processing box 1, the output end of the air pump 51 is fixedly connected to an air pipe 52, and the inner cavity of the grease separation chamber 43 is rotatably connected to an aeration component 53 connected to the air pipe 52.

[0042] The sewage settles in the grease separation chamber 43, and some of the grease will gradually float up and float on the water surface. However, some emulsified oil will still be suspended in the sewage due to its density being close to that of water. Air is supplied to the aeration component 53 through the air pump 51 and the air pipe 52. The aeration component 53 uses the air to send the air into the sewage in the grease separation chamber 43 in the form of bubbles. The bubbles come into contact with the grease in the sewage, causing the emulsified oil to be adsorbed on the surface of the bubbles and float up with the bubbles until it is suspended on the water surface.

[0043] It should be noted that the above-mentioned air pump 51 is a conventional air supply device. This structure has been widely used in the prior art. In the present invention, it is only used to realize the function of continuously providing air to the aeration component 53, and its internal structure, operating principle, wiring, and control method are no longer described in detail.

[0044] During the operation of this embodiment, first, the large pieces of kitchen waste in the catering wastewater are separated by the coarse mesh screen 23 in the L-shaped inclined plate 1 22 and stored in the kitchen waste recovery bucket 24. The sewage further slowly enters the L-shaped inclined plate 2 31 through the action of the slow flow plate 33, and then settles in the L-shaped inclined plate 2 31 to separate the heavier sediment in the sewage. Simultaneously, the sewage containing suspended matter is sent to the suspended matter separation structure 45 for further treatment through the overflow plate 41, and these suspended matter are sent to the suspended matter recovery bucket 42 for temporary storage through the action of the suspended matter separation structure 45. Further, through the cooperation of the aeration component 53 and the air pump 51 arranged at the bottom of the grease separation chamber 43, the suspended emulsified oil is sent to the upper layer of the sewage and sent to the grease chamber 12 through the action of the oil discharge component 46. The sewage is sent to the sewage chamber 11 through the action of the oil discharge component 46 to wait for the next step of treatment.

[0045] Example 2: Based on Example 1, this example evenly sends the sewage to the top of the fine mesh screen 454 through the baffle 2 413 and the overflow hole 412 provided on the overflow plate 41, and causes the sewage to pass through the fine mesh screen 454 and fall into the grease separation chamber 43 below through the action of gravity. Furthermore, the separated suspended matter is flushed to the upper layer of the conveyor belt 453 by the impact of the water flow, and the conveyor belt 453 is driven to run by the action of the driving motor 44 and sent to the suspended matter recovery barrel 42 for storage through the connecting port 455 to avoid affecting the subsequent sewage treatment.

[0046] Specifically, in order to guide the sewage containing flocculent impurities fed into the sedimentation chamber 34 to evenly fall on the upper side of the suspended matter separation structure 45, refer to Figure 5 The overflow plate 41 is concave and a baffle 1 411 is fixedly connected to the middle part of its inner surface. The part of the overflow plate 41 located below the baffle 1 411 is symmetrically fixedly connected to a baffle 2 413. The bottom wall of the inner surface of the overflow plate 41 located between the two baffles 2 413 is provided with two rows of overflow holes 412 connected to the lower end of the overflow plate 41.

[0047] Baffle 1 411 is used to block sewage and prevent it from directly entering the suspended matter recovery barrel 42 through the overflow hole 412. The sewage will enter the overflow plate 41 and gradually fill it until it passes over the baffle 2 413. At this time, the flow rate and flow rate of the sewage between the two baffles 413 are uniform, and the sewage evenly falls through the overflow hole 412 into the suspended matter recovery barrel 42 below, thereby achieving uniform distribution of the sewage and avoiding the accumulation of sewage and impurities on one side of the suspended matter recovery barrel 42 due to uneven distribution, causing blockage and affecting the efficiency of automatic slag discharge.

[0048] Further, in order to separate and centrally store these flocs, see Figure 5 and Figure 6The suspended matter separation structure 45 includes a mounting frame 451 fixedly connected to the lower end of the overflow plate 41. Both sides of the upper end of the mounting frame 451 are inclined surfaces and the inner surfaces thereof are fixedly connected to fine mesh screens 454. The left and right ends of the mounting frame 451 are symmetrically fixedly connected to connecting blocks 452. Conveying belts 453 are fixedly installed on the inner surfaces of the two connecting blocks 452. The driving motor 44 is connected to the conveying belts 453 on both sides through a transmission shaft. The rear part of the inner surface of the grease separation chamber 43 and the horizontal part of the upper end of the conveying belt 453 are symmetrically provided with connecting openings 455 with the same width as the connecting blocks 452. The connecting openings 455 are connected to the sedimentation chamber 34 and are located on the upper side of the suspended matter recovery barrel 42.

[0049] The mounting frame 451 is installed below the overflow plate 41 and is used to receive sewage containing impurities sent down by the overflow hole 412. The fine mesh screens 454 installed on both sides of the upper end can block the meat paste and small particles of impurities in the sewage, and move them to the connecting blocks 452 on both sides through the continuous flushing of the water flow until they fall into the connecting blocks 452. The conveyor belt 453 installed in the connecting block 452 is a commonly used belt structure, which can continue to operate under the action of the drive motor 44, carrying these processed impurities to move backward, and finally enter the suspended matter recovery barrel 42 at the rear through the connecting port 455 for temporary storage. The treated sewage is liquid as a whole and enters the grease separation chamber 43 below through the fine mesh screen 454 for further treatment.

[0050] Example 3: Based on Example 2, this example further uses the aeration assembly 53 to spray bubbles into the oily wastewater in the grease separation chamber 43. The emulsified oil suspended in the wastewater adheres to the bubbles and rises with the bubbles, thereby bringing the emulsified oil above the wastewater surface.

[0051] Furthermore, the sewage in the grease separation chamber 43 surges due to the action of bubbles, and the sewage containing oil on the surface enters the inner side of the square frame 462 through the overflow port 463 on the square frame 462 suspended on the upper layer of the liquid surface, and enters the grease chamber 12 through the oil drain pipe 468 connecting the square frame 462 and the grease chamber 12, so as to process the grease mixed in the sewage. The cooperation between the square frame 462 and the L-shaped connecting rod 465 drives the baffle 3 466 to slide upward in the cross connecting groove 467, so as to connect the grease separation chamber 43 with the sewage chamber 11, and send the lower layer water that has been treated with oil into the sewage chamber 11, and send it to the next process for further treatment through the action of the water pump 6.

[0052] Specifically, the aeration assembly 53 is used to spray bubbles into the oily wastewater in the grease separation chamber 43, and the suspended emulsified oil is driven to float upward by the air flotation effect, and the oil is sent into the grease chamber 12 in conjunction with the oil discharge assembly 46. Figure 7The aeration assembly 53 includes a rotating seat 531 which is rotatably connected to the rear bottom wall of the grease separation chamber 43 and connected to the air supply pipe 52. The upper end of the rotating seat 531 is fixedly connected to an aeration head 534, and the upper end of the aeration head 534 is fixedly connected to a dispersion turntable 536. A plurality of stirring rods 535 are fixedly connected to the outer surface of the aeration head 534 in an annular distribution. A plurality of connecting pipes 532 connected to its inner cavity are fixedly connected to the outer surface of the rotating seat 531 in an annular distribution. The outer surfaces of the plurality of connecting pipes 532 are fixedly connected to one-way nozzles 533 connected to their inner cavities. The one-way nozzles 533 are inclined relative to the bottom wall of the grease separation chamber 43 and have the same inclination angle.

[0053] The air pump 51 continuously delivers air to the rotating seat 531 through the air supply pipe 52. During this process, the rotating seat 531 supplies air to the surrounding connecting pipes 532. Air is then ejected through the one-way nozzle 533 on the connecting pipe 532, forming bubbles in the sewage. Because the one-way nozzle 533 is inclined, the reaction force during the bubble ejection process drives the rotating seat 531 to rotate through the connecting pipe 532, thereby driving the aeration head 534 and its surrounding stirring rods 535 to rotate, stirring the sewage in the grease separation chamber 43 and promoting the separation of grease therein.

[0054] At this time, part of the air in the rotating seat 531 will also be sprayed into the sewage in the grease separation chamber 43 through the aeration head 534, and a large number of bubbles will be formed through the aeration head 534. These bubbles will be broken up by the dispersion turntable 536 that rotates with the aeration head 534, forming a more fragmented bubble group, and move upward under the action of buoyancy, absorbing the emulsified oil in the sewage and causing it to float.

[0055] Further, such as Figure 8 As shown, a sewage chamber 11 is opened at the lower part of the inner cavity of the treatment box 1, and a grease chamber 12 is opened at the front side of the grease separation structure 4 of the inner cavity of the treatment box 1. The output end of the water pump 6 is fixedly connected to a water pipe 2 62, and the input end of the water pump 6 is fixedly connected to a water pipe 1 61 which passes through the bottom wall of the inner cavity of the grease chamber 12 and extends to the lower part of the inner cavity of the sewage chamber 11.

[0056] Further, in order to separate the oil from the sewage, see Figure 9 and Figure 10 The oil drain assembly 46 includes a square frame 462 located on the lower side of the connecting block 452 and tightly attached to the inner surface of the grease separation chamber 43. The upper end of the square frame 462 is fixedly connected to a plurality of telescopic connecting rods 461 fixedly connected to the lower end of the connecting block 452 in a rectangular distribution. The telescopic connecting rods 461 are used to ensure that the overflow port 463 can move up and down with the liquid level under the action of the airbag 464. The upper side of the inner surface of the square frame 462 is provided with an overflow port 463 connected to its inner cavity. The inner surface of the square frame 462 is fixedly connected to the airbag 464. The front part of the lower end of the square frame 462 is fixedly connected to an oil drain pipe 468 connecting the inner cavity of the grease chamber 12 and the inner cavity of the square frame 462.

[0057] Grease will float on the upper layer of the water surface. The buoyancy provided by the air bag 464 can make the square frame 462 suspended between the water and the oil surface, so that the overflow port 463 is located in the lower layer of the grease. The sewage formed by the bubbles surges, causing the grease in the center to float to the surroundings, and then enter the inner side of the square frame 462 through the overflow port 463, and enter the grease chamber 12 through the oil drain pipe 468 for temporary storage.

[0058] Furthermore, in order to realize that the wastewater without grease is sent into the wastewater chamber 11 and transported to the next link for further treatment through the water pump 6, see Figure 9 and Figure 10 A cross connecting groove 467 communicating with the sewage chamber 11 is provided at the front of the inner cavity of the grease separation chamber 43. A baffle three 466 is slidably connected to the inner surface of the cross connecting groove 467. The upper end of the baffle three 466 is symmetrically fixedly connected to an L-shaped connecting rod 465 fixedly connected to the upper end of the telescopic connecting rod 461. The front part of the inner surface of the grease separation chamber 43 located on the upper side of the telescopic connecting rod 461 is provided with a notch adapted to the horizontal part of the L-shaped connecting rod 465.

[0059] During the process of the square frame 462 floating upward, the L-shaped connecting rod 465 drives the baffle plate 3 466 to move upward until the baffle plate 3 466 is completely separated from the horizontal part of the cross connecting groove 467, and then the grease separation chamber 43 and the sewage chamber 11 are connected through the cross connecting groove 467, and the oil-free sewage in the lower layer is sent to the sewage chamber 11 for temporary storage;

[0060] When the liquid level in the grease separation chamber 43 drops, the oil level will also drop accordingly. To prevent oil from entering the sewage chamber 11 and causing secondary contamination of the treated sewage, the L-shaped connecting rod 465 will follow the square frame 462 to drop, thereby driving the baffle plate 3 466 to drop and close the cross connecting groove 467. At this time, the grease separation chamber 43 and the sewage chamber 11 are no longer connected, achieving automatic closure.

[0061] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating restaurant wastewater, comprising a treatment tank, characterized in that: A water pump is fixedly mounted on the front end of the treatment box, a kitchen waste separation structure is provided on the upper portion of the inner surface of the treatment box, a sedimentation separation structure is provided in the middle portion of the inner surface of the treatment box, a grease separation structure is provided on the portion of the inner surface of the treatment box located in front of the sedimentation separation structure, an oil removal auxiliary structure communicating with the inner cavity of the grease separation structure is fixedly mounted on either side of the treatment box, a sewage chamber is provided in the lower portion of the inner cavity of the treatment box, and a grease chamber is provided in the portion of the inner cavity of the treatment box located in front of the grease separation structure, a water pump output end is fixedly connected to a second water pipe, and a water pump input end is fixedly connected to a first water pipe that penetrates the bottom wall of the grease chamber and extends to the lower portion of the sewage chamber; The food waste separation structure includes a water inlet channel opened at the upper end of the treatment box, an L-shaped inclined plate 1 is fixedly connected to the inner surface of the treatment box located behind the water inlet channel, and a coarse mesh screen is fixedly connected to the inner surface of the inclined portion of the L-shaped inclined plate 1; The sedimentation separation structure includes a sedimentation chamber disposed on the inner surface of the treatment box and located below the inclined portion of the coarse mesh screen, the inner surface of the sedimentation chamber is fixedly connected to an L-shaped inclined plate parallel to an L-shaped inclined plate two; The grease separation structure includes a suspended matter recovery bucket located on the lower side of the second L-shaped inclined plate and slidably connected to the inner surface of the sedimentation chamber, and a grease separation chamber opened on the front side of the sedimentation chamber. The upper part of the grease separation chamber is connected to the portion of the sedimentation chamber located at the upper end of the second L-shaped inclined plate. The upper part of the inner surface of the grease separation chamber is fixedly connected to an overflow plate, the lower end of the overflow plate is fixedly connected to the suspended matter separation structure, and the lower end of the suspended matter separation structure is fixedly connected to an oil drain assembly; The overflow plate is concave in shape, with a baffle 1 fixedly connected to the middle of its inner surface. The portion of the overflow plate located below the baffle is symmetrically fixedly connected to a baffle 2. The portion of the bottom wall of the inner surface of the overflow plate located between the two baffles 2 is provided with two rows of overflow holes communicating with the lower end of the overflow plate. The suspended matter separation structure includes a mounting frame fixedly connected to the lower end of the overflow plate, both sides of the upper end of the mounting frame are inclined surfaces and the inner surfaces thereof are fixedly connected to fine mesh screens, the left and right ends of the mounting frame are symmetrically fixedly connected to connecting blocks, and the inner surfaces of the two connecting blocks are fixedly installed with conveyor belts, and the rear part of the inner surface of the grease separation chamber that is horizontal to the upper end of the conveyor belt is symmetrically provided with connecting openings with the same width as the connecting blocks, and the connecting openings are connected to the sedimentation chamber and are located on the upper side of the suspended matter recovery barrel.

2. A device for treating restaurant wastewater according to claim 1, characterized in that: The rear end of the vertical part of the water inlet flow channel and the inner surface of the processing box are slidably connected to a kitchen waste recycling bucket.

3. A device for treating restaurant wastewater according to claim 2, characterized in that: The two vertical parts of the L-shaped inclined plate are slidably connected to the bottom wall of the inner surface of the sedimentation chamber to form a sediment recovery bucket. The upper part of the inner surface of the sedimentation chamber is fixedly connected to a slow flow plate. The left and right sides and rear side of the upper end of the slow flow plate are provided with a number of through holes connected to the lower end.

4. A device for treating restaurant wastewater according to claim 3, characterized in that: One end of the processing box is fixedly connected to a drive motor that is transmission-connected to the suspended matter separation structure, and the drive motor is transmission-connected to the conveyor belts on both sides via a transmission shaft.

5. The device for treating restaurant wastewater according to claim 4, characterized in that: The oil removal auxiliary structure includes an air pump fixedly connected to either side of the processing box, the output end of the air pump is fixedly connected to an air pipe, and the inner cavity of the grease separation chamber is rotatably connected to an aeration component connected to the air pipe.

6. The device for treating restaurant wastewater according to claim 1, characterized in that: The oil drainage assembly includes a square frame located at the lower side of the connecting block and in close contact with the inner surface of the grease separation chamber. A plurality of telescopic connecting rods fixedly connected to the lower end of the connecting block are fixedly connected in a rectangular distribution on the upper end of the square frame. An overflow port communicating with the inner cavity of the square frame is provided on the upper side of the inner surface of the square frame. An air bag is fixedly connected to the inner surface of the square frame. An oil drainage pipe communicating with the inner cavity of the grease chamber and the inner cavity of the square frame is fixedly connected to the front part of the lower end of the square frame.

7. The device for treating restaurant wastewater according to claim 6, characterized in that: A cross connecting groove connected to the sewage chamber is provided at the front of the inner cavity of the grease separation chamber, and a baffle three is slidably connected to the inner surface of the cross connecting groove. The upper end of the baffle three is symmetrically fixedly connected to an L-shaped connecting rod fixedly connected to the upper end of the telescopic connecting rod. The front part of the inner surface of the grease separation chamber located on the upper side of the telescopic connecting rod is provided with a notch adapted to the horizontal part of the L-shaped connecting rod.

8. The device for treating restaurant wastewater according to claim 5, characterized in that: The aeration assembly includes a rotating seat rotatably connected to the rear bottom wall of the grease separation chamber and connected to the air pipe, an aeration head is fixedly connected to the upper end of the rotating seat, a dispersion turntable is fixedly connected to the upper end of the aeration head, a plurality of stirring rods are fixedly connected to the outer surface of the aeration head in an annular distribution, a plurality of connecting pipes connected to its inner cavity are fixedly connected to the outer surface of the rotating seat in an annular distribution, and a plurality of connecting pipes connected to its inner cavity are fixedly connected to the outer surfaces of the plurality of connecting pipes, and the one-way nozzles are obliquely distributed relative to the bottom wall of the grease separation chamber and have the same inclination angle.

Images