Oil-water separation equipment for canteen wastewater treatment

Abstract

The invention discloses oil-water separation equipment for canteen wastewater treatment, relates to the technical field of sewage treatment, and aims to solve the problems that in the ventilation process, liquid flows back due to insufficient air pressure or uncertain air pressure fluctuation at the position of a ventilation hole, the liquid flows back in a gap, and the ventilation process is affected. Compared with the liquid pressure at the top, when the pressure at the upper side and the lower side of the sliding block reaches the same magnitude, through the sliding block and the balancing weight which are connected together, after the air pressure is larger than the liquid pressure at the top and reaches a certain degree, the sliding block can be pushed to open the gap for ventilation; and liquid backflow caused by insufficient air pressure or uncertain fluctuation at the position of the ventilation hole in the process of assisting oil-water separation by ventilation is avoided, so that the influence on gas export is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to an oil-water separation device for treating wastewater from a canteen. Background Art

[0002] At present, the catering oil-water separator is a kind of equipment used in the catering industry. It is suitable for canteens and other places of power supply companies. It is mainly used to separate grease, water and solid impurities in catering wastewater. Its working principle is usually to use physical methods, such as gravity separation, centrifugal separation, coagulation separation, flotation separation, etc., to make the oily sewage flow through a specific device or structure, so as to separate the oil and water, which helps to reduce the grease content in the sewage, reduce the risk of blockage of the drainage pipe, and extend the service life of the pipe. Secondly, it can reduce the entry of grease into the sewage treatment system and reduce the difficulty and cost of sewage treatment. When tiny bubbles are introduced into the oily sewage, the oil droplets will collide with the bubbles and adhere to the surface of the bubbles. This is because the oil droplets have a certain hydrophobicity and tend to combine with the bubbles. The bubbles attached with oil droplets move upward due to the buoyancy, driving the oil droplets to rise together. The bubbles will continue to merge and grow during the rising process, which accelerates the rising speed; but in the process of ventilation, the position of the ventilation hole is insufficient due to insufficient air pressure or fluctuating air pressure, resulting in liquid backflow, causing the gap to be backfilled with liquid, affecting the ventilation process. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: an oil-water separation device for treating wastewater from a cafeteria, comprising: a separation bin, which provides a place for oil-water separation, and a partition is fixedly installed inside the separation bin, the separation bin is divided into a filtering area and a separation area by the partition, and a fan is fixedly installed at the center position of the bottom of the separation bin, a feed pipe is fixedly installed on one side of the separation bin, and an oil outlet pipe and a collecting bin are installed on the other side of the separation bin, the collecting bin is located directly below the oil outlet pipe, and a base is fixedly installed at the bottom of the separation bin; a ventilation mechanism, which is used to ventilate the bottom of the mixed liquid upward to assist in oil-water separation during separation, the ventilation mechanism is installed at the bottom of the separation area of ​​the separation bin, and the bottom of the ventilation mechanism is connected to the output end of the fan through a pipeline; a filtering mechanism, which is used to filter the residue in the mixed liquid, and the filtering mechanism is installed in the filtering area of ​​the separation bin; a material guiding mechanism, which is used to guide the filtered residue The venting mechanism comprises a perforated plate, which is fixedly mounted on the inner wall of the separation bin, and the top of the perforated plate is evenly provided with slots, and a venting cylinder is fixedly mounted at the slots of the perforated plate, a sealing block is fixedly mounted on the bottom of the inner wall of the venting cylinder, a through slot is provided on the top of the sealing block, and a sliding block is slidably mounted at the through slot of the sealing block, the sliding block is adapted to the through slot of the sealing block, and a counterweight block is fixedly mounted on the bottom of the sliding block, which is connected with the sliding block through the counterweight block, so that air accumulates at the bottom, and when the pressure on the upper and lower sides of the sliding block reaches the same size compared with the liquid pressure on the top, the sliding block and the counterweight block are connected together, so that the air pressure is greater than the liquid pressure on the top to a certain extent, and then the sliding block can be pushed to open the gap for ventilation, so as to avoid liquid backflow due to insufficient or fluctuating air pressure at the ventilation hole position during ventilation-assisted oil-water separation, thereby affecting the gas extraction.

[0004] Preferably, an annular groove is provided at the top of the outer side of the ventilation cylinder, a stirring ring is rotatably installed at the annular groove of the ventilation cylinder, a spiral stirring plate is evenly arranged on the outer side of the stirring ring, air holes are evenly provided on the outer side of the ventilation cylinder, a zigzag bottom plate is fixedly installed at the bottom of the orifice plate, both sides of the bottom of the inner wall of the zigzag bottom plate are lower than the center position, the air hole of the ventilation cylinder is located below the stirring ring, and a ring frame is fixedly installed at the air hole of the outer side of the ventilation cylinder, and a baffle is fixedly installed on the inner wall of the ring frame, and the baffle plate corresponds to the air hole of the ventilation cylinder through the baffle plate so that the guided air collides with the baffle plate, and the bubbles are turned into multiple small bubbles under the collision, which cooperate with the stirring ring to better expand the air diffusion range, and the bubbles are better in contact with the oil and are brought to the liquid surface more quickly for oil-water separation, and the baffle plates are evenly installed along the center position of the ring frame, and the baffle plates are arc-shaped plates and correspond one-to-one with the air holes of the ventilation cylinder.

[0005] Preferably, the filtering mechanism includes a filter bin, a feed hole is provided at one end of the outer side of the filter bin close to the feed pipe, and an anti-overflow ring is fixedly installed at the feed hole of the filter bin, the filter bin is connected with the feed pipe through the anti-overflow ring, and a baffle plate is fixedly installed on the top of the inner wall of the filter bin, and the baffle plate is used to reduce the impact range when wastewater is introduced, and at the same time, the filtered food residues are gathered during the filtering process, and the material guiding mechanism is used to better guide the residues in the wastewater, the baffle plates are symmetrically installed along the center position of the axis of the filter bin, and filter holes are evenly provided at the bottom of the filter bin, and side plates are fixedly connected on both sides of the bottom of the filter bin.

[0006] Preferably, a guide plate is fixedly installed at the bottom of the filter bin, and the guide plate is an inclined arc plate, and a slag barrier strip is installed on the top of the guide plate, and the slag barrier strip is evenly installed on the top of the guide plate, and the two sides of the guide plate are tightly fitted with the opposite surfaces of the side plates, and the bottom end of the guide plate is fixedly connected with an arc groove bar, and an arc groove is opened on one side of the arc groove bar, and the arc groove bar cooperates with the slag barrier strip to block fine food residues driven by water flow. At the same time, the arc groove of the arc groove bar reduces the water flow speed to avoid ensuring the filtering and removing effect of fine residues, and there is a gap between the other side of the arc groove bar and the inner wall of the separation bin.

[0007] Preferably, the material guiding mechanism comprises a material guiding cylinder, which is obliquely arranged at the top of the separation bin, and the bottom end of the material guiding cylinder passes through the separation bin and extends to the interior of the filter bin, a connecting disk is fixedly installed on the top of the material guiding cylinder, liquid holes are provided at the upper and lower ends of the outer side of the material guiding cylinder, a motor is fixedly installed on the top of the connecting disk, the output end of the motor passes through the connecting disk and extends to the interior of the material guiding cylinder, and a rotating shaft is fixedly installed on the output end of the motor, an auger plate is fixedly installed on the outer side of the rotating shaft, and the auger plate The outside is evenly provided with notches, the outside of the material guide cylinder is provided with a discharge port, and a connecting bin is installed at the discharge port of the material guide cylinder, and a slag collecting bin is fixedly installed at the bottom of the connecting bin, and the lower half of the slag collecting bin is located in the separation area of ​​the separation bin. Through the water control trough at the bottom of the slag collecting bin, after the residue in the wastewater is discharged, the wastewater on the surface of the residue can still be controlled and fall back into the separation area for oil-water separation, so as to avoid the presence of a large amount of wastewater in the residue that needs to be treated when the residue is treated, and water control troughs are symmetrically provided at the bottom of the outside of the slag collecting bin.

[0008] The present invention provides an oil-water separation device for treating wastewater from a canteen. It has the following beneficial effects: 1. The oil-water separation equipment for treating wastewater in the cafeteria is connected to the sliding block through a counterweight block, so that air accumulates at the bottom. When the pressure on the upper and lower sides of the sliding block reaches the same level compared with the liquid pressure on the top, the sliding block and the counterweight block are connected together to make the air pressure greater than the liquid pressure on the top to a certain extent before the sliding block can be pushed to open the gap for ventilation, thereby avoiding the backflow of liquid at the ventilation hole due to insufficient or fluctuating air pressure during the ventilation-assisted oil-water separation process, which affects the gas discharge.

[0009] 2. The oil-water separation equipment for treating wastewater from the canteen uses a baffle plate to correspond to the air holes of the vent tube, so that the derived air collides with the baffle plate. The bubbles are transformed into multiple small bubbles under the impact, which cooperate with the stirring ring to better expand the air diffusion range. The bubbles are in better contact with the oil and are brought to the liquid surface more quickly for oil-water separation.

[0010] 3. The oil-water separation equipment for treating wastewater in the canteen reduces the impact range through the baffle plate when the wastewater is introduced. At the same time, during the filtration process, the filtered food residues are gathered and cooperated with the material guiding mechanism to better guide the residues in the wastewater.

[0011] 4. The oil-water separation equipment for canteen wastewater treatment cooperates with arc groove bars and slag blocking bars to block tiny food residues under the drive of water flow. At the same time, the arc groove of the arc groove bar reduces the water flow speed to ensure the filtering and removal effect of tiny residues.

[0012] 5. The oil-water separation equipment for treating wastewater in the canteen uses the water control trough at the bottom of the slag collecting bin. After the residue in the wastewater is discharged, the wastewater on the surface of the residue can still be controlled and fall back into the separation area for oil-water separation, avoiding the situation where there is still a large amount of wastewater in the residue that needs to be treated when the residue is being treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the external structure of an oil-water separation device for treating cafeteria wastewater according to the present invention.

[0014] Figure 2 This is a structural side view of an oil-water separation device for treating wastewater from a cafeteria according to the present invention.

[0015] Figure 3 This is a partial structural dissection diagram of an oil-water separation device for treating cafeteria wastewater according to the present invention.

[0016] Figure 4 It is a schematic diagram of the ventilation mechanism structure of the present invention.

[0017] Figure 5 It is a partial structural schematic diagram of the ventilation mechanism of the present invention.

[0018] Figure 6It is a partial structural anatomical diagram of the ventilation mechanism of the present invention.

[0019] Figure 7 It is a schematic diagram of the structure of the filtering mechanism of the present invention.

[0020] Figure 8 It is a structural dissection diagram of the filtering mechanism of the present invention.

[0021] Fig. 9 It is a schematic structural diagram of the material guiding mechanism of the present invention.

[0022] Fig.10 It is a structural anatomical diagram of the material guiding mechanism of the present invention.

[0023] In the figure: 1. separation chamber; 2. ventilation mechanism; 3. filtering mechanism; 4. material guiding mechanism; 5. partition; 6. fan; 7. base; 8. oil outlet pipe; 9. collection chamber; 10. feed pipe; 21. orifice plate; 22. zigzag bottom plate; 23. ventilator; 24. ring frame; 25. baffle plate; 26. stirring ring; 27. sealing block; 28. sliding block; 29. ​​counterweight block; 31. filtering chamber; 32. anti-overflow ring; 33. side plate; 34. baffle plate; 35. guide plate; 36. slag blocking strip; 37. arc groove strip; 41. material guiding barrel; 42. motor; 43. connecting chamber; 44. slag collecting chamber; 45. connecting plate; 46. rotating shaft; 47. auger plate. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0025] The first embodiment, as Figures 1 to 6As shown, the present invention provides a technical solution: an oil-water separation device for treating wastewater from a cafeteria, comprising: a separation bin 1, which provides a place for oil-water separation, and a partition 5 is fixedly installed inside the separation bin 1, and the separation bin 1 is divided into a filtering area and a separation area by the partition 5, and a fan 6 is fixedly installed at the center position of the bottom of the separation bin 1, a feed pipe 10 is fixedly installed on one side of the separation bin 1, and an oil outlet pipe 8 and a collecting bin 9 are installed on the other side of the separation bin 1, and the collecting bin 9 is located directly below the oil outlet pipe 8, and a base 7 is fixedly installed at the bottom of the separation bin 1; a ventilation mechanism 2, which is used for upward ventilation at the bottom of the mixed liquid during separation to assist oil-water separation, the ventilation mechanism 2 is installed at the bottom of the separation area of ​​the separation bin 1, and the bottom of the ventilation mechanism 2 is connected to the output end of the fan 6 through a pipeline; a filtering mechanism 3, which is used to filter the residue in the mixed liquid, and the filtering mechanism 3 is installed in the filtering area of ​​the separation bin 1; a material guiding mechanism 4, which is used to filter the filtered The residue is collected by guiding the material; and the guiding mechanism 4 is installed on the top of the separation bin 1; wherein the ventilation mechanism 2 includes a perforated plate 21, which is fixedly installed on the inner wall of the separation bin 1, and the top of the perforated plate 21 is evenly provided with slots, and a ventilator 23 is fixedly installed at the slots of the perforated plate 21, and a sealing block 27 is fixedly installed at the bottom of the inner wall of the ventilator 23, and a through slot is provided on the top of the sealing block 27, and a sliding block 28 is slidably installed at the through slot of the sealing block 27, and the sliding block 28 is aligned with the through slot of the sealing block 27. It is adapted and fixed to the inner wall of the separation bin 1 through the orifice plate 21, and at the same time is connected to the pipe of the fan 6 through the center position of the zigzag bottom plate 22 at the bottom, so that air gathers in the gap between the zigzag bottom plate 22 and the orifice plate 21. Only after the air pressure reaches a certain level can the sliding block 28 inside the sealing block 27 be pushed to drive the counterweight block 29 to slide upward, so that the through groove inside the sealing block 27 opens, and the air is discharged through the air holes of the vent tube 23, and the counterweight block 29 is fixedly installed at the bottom of the sliding block 28.

[0026] An annular groove is provided at the top of the outer side of the ventilator 23, and a stirring ring 26 is rotatably installed at the annular groove of the ventilator 23. A spiral stirring plate is evenly arranged on the outer side of the stirring ring 26. Air holes are evenly provided on the outer side of the ventilator 23. A zigzag bottom plate 22 is fixedly installed at the bottom of the orifice plate 21. Both sides of the bottom of the inner wall of the zigzag bottom plate 22 are lower than the center position. The air holes of the ventilator 23 are located below the stirring ring 26, and a ring frame 24 is fixedly installed at the air holes on the outer side of the ventilator 23. A baffle plate 25 is fixedly installed on the inner wall of the ring frame 24. In the process of air outlet, the air holes outlet the air to the surrounding areas. In the process of air outlet, the baffle plate 25 cooperates with the stirring ring 26 to block the air when it flows and turns into more small bubbles. The baffle plates 25 are evenly installed along the center position of the ring frame 24, and the baffle plates 25 are arc-shaped plates and correspond to the air holes of the ventilator 23 one by one.

[0027] The second embodiment is based on the first embodiment. Figures 7 and 8 As shown, the filter mechanism 3 includes a filter bin 31, a feed hole is provided at one end of the outer side of the filter bin 31 close to the feed pipe 10, and an overflow prevention ring 32 is fixedly installed at the feed hole of the filter bin 31, the filter bin 31 is connected with the feed pipe 10 through the overflow prevention ring 32, a baffle plate 34 is fixedly installed on the top of the inner wall of the filter bin 31, the baffle plate 34 is symmetrically installed along the center position of the axis of the filter bin 31, and filter holes are evenly provided at the bottom of the filter bin 31, the liquid introduced by the feed pipe 10 enters the filter bin 31, and the large food residues in the wastewater are filtered through the filter holes at the bottom of the filter bin 31, so that the fine residues pass through the filter bin 31 together with the wastewater and fall on the top of the guide plate 35, and the wastewater is guided and flows along the guide plate 35 by cooperating with the side plates 33 on both sides, and the side plates 33 are fixedly connected on both sides of the bottom of the filter bin 31.

[0028] A guide plate 35 is fixedly installed at the bottom of the filter bin 31. The guide plate 35 is an inclined arc plate, and a slag barrier strip 36 is installed on the top of the guide plate 35. The slag barrier strip 36 is evenly installed on the top of the guide plate 35. The two sides of the guide plate 35 are tightly fitted with the opposite surfaces of the side plates 33, and the bottom end of the guide plate 35 is fixedly connected with an arc groove strip 37. An arc groove is opened on one side of the arc groove strip 37. During the flow process, the slag barrier strip 36 cooperates with the arc groove strip 37 to remove and filter the fine residues in the wastewater. At the same time, when the wastewater is diverted along the guide plate 35 and impacts the arc groove strip 37, the arc groove of the arc groove strip 37 buffers the impact force, so that the liquid overflows from the top of the arc groove strip 37 and enters the separation area of ​​the separation bin 1 through the gap between the arc groove strip 37 and the separation bin 1, and there is a gap between the other side of the arc groove strip 37 and the inner wall of the separation bin 1.

[0029] The third embodiment is based on the first and second embodiments. Figures 9 and 10As shown, the material guiding mechanism 4 includes a material guiding cylinder 41, which is tiltedly arranged on the top of the separation bin 1, and the bottom end of the material guiding cylinder 41 passes through the separation bin 1 and extends to the inside of the filter bin 31, a connecting plate 45 is fixedly installed on the top of the material guiding cylinder 41, and liquid holes are provided at the upper and lower ends of the outer side of the material guiding cylinder 41, and a motor 42 is fixedly installed on the top of the connecting plate 45, and the output end of the motor 42 passes through the connecting plate 45 and extends to the inside of the material guiding cylinder 41, and a rotating shaft 46 is fixedly installed on the output end of the motor 42, and a auger plate 47 is fixedly installed on the outer side of the rotating shaft 46. The motor 42 is started by a worker to drive the rotating shaft 46 to rotate, so that the rotating shaft 46 drives the auger plate 47 to rotate, and the auger plate 47 is rotated by the auger. The dragon plate 47 drives the food residues so that the auger plate 47 drives the food residues to move to the discharge port of the guide barrel 41, and the outer side of the auger plate 47 is evenly provided with grooves, the outer side of the guide barrel 41 is provided with a discharge port, and a connecting bin 43 is installed at the discharge port of the guide barrel 41, and a slag collecting bin 44 is fixedly installed at the bottom of the connecting bin 43, and the lower half of the slag collecting bin 44 is located in the separation area of ​​the separation bin 1. The residue introduces the food residues into the slag collecting bin 44 through the connecting bin 43, and the liquid in the food residue is controlled out through the water control trough opened at the bottom of the slag collecting bin 44 and drips back into the separation area of ​​the separation bin 1 for oil-water separation, and water control troughs are symmetrically opened at the bottom of the outer side of the slag collecting bin 44.

[0030] During use, workers connect the wastewater pipeline with the feed pipe 10, so that the wastewater is introduced into the oil-water separation equipment through the feed pipe 10, and the wastewater is first filtered through the filtering mechanism 3 to filter the food residues in the canteen wastewater. After the wastewater passes through, the internal solid residue is filtered out, and the oil-water mixed liquid passes through the filtering mechanism 3 and enters the separation area of ​​the separation bin 1. The air introduced by the fan 6 is introduced into the oil-water mixed liquid through the ventilation mechanism 2 to assist the separation of oil and water, so that the oil floats on the liquid surface, and the oil is discharged through the oil outlet pipe 8 and introduced into the collection bin 9 for collection. At the same time, the residue filtered out from the filtering mechanism 3 is discharged and collected through the material guiding mechanism 4.

[0031] When the wastewater is filtered through the filter mechanism 3, the liquid introduced by the feed pipe 10 enters the filter bin 31, and the large food residues in the wastewater are filtered through the filter holes at the bottom of the filter bin 31, so that the fine residues pass through the filter bin 31 together with the wastewater and fall on the top of the guide plate 35. The guide of the guide plate 35 cooperates with the side plates 33 on both sides to guide the wastewater to flow along the guide plate 35. At the same time, during the flow process, the slag blocking bar 36 cooperates with the arc groove bar 37 to remove and filter the fine residues in the wastewater. At the same time, when the wastewater is guided along the guide plate 35 to impact the arc groove bar 37, the arc groove of the arc groove bar 37 buffers the impact force, so that the liquid overflows from the top of the arc groove bar 37 and enters the separation area of ​​the separation bin 1 through the gap between the arc groove bar 37 and the separation bin 1.

[0032] After the waste water after the food residue is removed enters the separation area of ​​the separation bin 1, the air discharged by the fan 6 is discharged at the bottom of the mixed liquid through the ventilation mechanism 2, and cooperates with the characteristic that oil floats on the water surface. It is fixed to the inner wall of the separation bin 1 through the orifice plate 21, and at the same time is connected to the pipe of the fan 6 through the center position of the zigzag bottom plate 22 at the bottom, so that the air gathers in the gap between the zigzag bottom plate 22 and the orifice plate 21. After the air pressure reaches a certain level, it can push the sliding block 28 inside the sealing block 27 to drive the counterweight block 29 to slide upward, so that the through groove inside the sealing block 27 opens, and the air is discharged through the air holes of the vent tube 23. In the process of air discharge, the air holes discharge the air to the surroundings. In the process of air discharge, the baffle plate 25 cooperates with the stirring ring 26 to block the air when it flows and turns into more small bubbles.

[0033] When the filtered food residues accumulate in the filter bin 31, the motor 42 in the guide mechanism 4 is started by the worker, driving the rotating shaft 46 to rotate, so that the rotating shaft 46 drives the auger plate 47 to rotate, and the auger plate 47 drives the food residues to move to the discharge port of the guide barrel 41 through the driving of the auger plate 47. The residues are introduced into the residue collecting bin 44 through the connecting bin 43, and the liquid in the food residues is controlled through the water control trough opened at the bottom of the residue collecting bin 44 and drips back into the separation area of ​​the separation bin 1 for oil-water separation.

[0034] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An oil-water separation device for canteen wastewater treatment, characterized in that: include: A separation bin (1), the separation bin (1) providing a place for oil-water separation, and a partition (5) is fixedly installed inside the separation bin (1), the separation bin (1) is divided into a filtering area and a separation area by the partition (5), and a fan (6) is fixedly installed at the center of the bottom of the separation bin (1), a feed pipe (10) is fixedly installed on one side of the separation bin (1), and an oil outlet pipe (8) and a collection bin (9) are installed on the other side of the separation bin (1), the collection bin (9) is located directly below the oil outlet pipe (8), and a base (7) is fixedly installed at the bottom of the separation bin (1); a ventilation mechanism (2), the ventilation mechanism (2) is used to ventilate the bottom of the mixed liquid upward to assist the oil-water separation during separation, the ventilation mechanism (2) is installed at the bottom of the separation area of ​​the separation bin (1), and the bottom of the ventilation mechanism (2) is connected to the output end of the fan (6) through a pipeline; a filtering mechanism (3), the filtering mechanism (3) The invention is used for filtering the residue in the mixed liquid, and the filtering mechanism (3) is installed in the filtering area of ​​the separation bin (1); the material guiding mechanism (4) is used for guiding and collecting the filtered residue; and the material guiding mechanism (4) is installed on the top of the separation bin (1); wherein the ventilation mechanism (2) comprises a perforated plate (21), the perforated plate (21) is fixedly installed on the inner wall of the separation bin (1), and the top of the perforated plate (21) is evenly provided with slots, and a ventilation cylinder (23) is fixedly installed at the slots of the perforated plate (21), a sealing block (27) is fixedly installed at the bottom of the inner wall of the ventilation cylinder (23), a through slot is opened at the top of the sealing block (27), and a sliding block (28) is slidably installed at the through slot of the sealing block (27), the sliding block (28) is adapted to the through slot of the sealing block (27), and a counterweight block (29) is fixedly installed at the bottom of the sliding block (28).

2. The oil-water separation equipment for treating wastewater from a canteen according to claim 1, characterized in that: The top of the outer side of the ventilation cylinder (23) is provided with an annular groove, a stirring ring (26) is rotatably mounted on the annular groove of the ventilation cylinder (23), spiral stirring plates are evenly arranged on the outer side of the stirring ring (26), air holes are evenly arranged on the outer side of the ventilation cylinder (23), a zigzag bottom plate (22) is fixedly mounted on the bottom of the orifice plate (21), and the two sides of the bottom of the inner wall of the zigzag bottom plate (22) are lower than the center position.

3. The oil-water separation equipment for treating wastewater from a canteen according to claim 2 is characterized by: The air holes of the vent cylinder (23) are located below the stirring ring (26), and a ring frame (24) is fixedly installed at the air holes on the outside of the vent cylinder (23), and a baffle (25) is fixedly installed on the inner wall of the ring frame (24). The baffle (25) is evenly installed along the center of the ring frame (24), and the baffle (25) is an arc-shaped plate and corresponds to the air holes of the vent cylinder (23) one by one.

4. The oil-water separation equipment for treating wastewater from a canteen according to claim 1 is characterized by: The filtering mechanism (3) comprises a filtering bin (31), a feeding hole being provided at one end of the outer side of the filtering bin (31) close to the feeding pipe (10), and an anti-overflow ring (32) being fixedly mounted at the feeding hole of the filtering bin (31), and the filtering bin (31) is connected to the feeding pipe (10) via the anti-overflow ring (32).

5. The oil-water separation equipment for treating wastewater from a canteen according to claim 4 is characterized by: A material baffle plate (34) is fixedly mounted on the top of the inner wall of the filter bin (31), the material baffle plate (34) being symmetrically mounted along the center position of the axis of the filter bin (31), and filter holes are evenly formed at the bottom of the filter bin (31), and side plates (33) are fixedly connected to both sides of the bottom of the filter bin (31).

6. The oil-water separation equipment for treating wastewater from a canteen according to claim 5, characterized in that: A guide plate (35) is fixedly mounted on the bottom of the filter bin (31); the guide plate (35) is an inclined arc plate; and a slag blocking strip (36) is mounted on the top of the guide plate (35); the slag blocking strip (36) is evenly mounted on the top of the guide plate (35).

7. The oil-water separation equipment for treating wastewater from a canteen according to claim 6, characterized in that: Both sides of the guide plate (35) are tightly fitted with the opposite surfaces of the side plate (33), and an arc groove bar (37) is fixedly connected to the bottom end of the guide plate (35), an arc groove is formed on one side of the arc groove bar (37), and a gap exists between the other side of the arc groove bar (37) and the inner wall of the separation bin (1).

8. The oil-water separation equipment for treating wastewater from a canteen according to claim 1, characterized in that: The material guiding mechanism (4) comprises a material guiding cylinder (41), the material guiding cylinder (41) being arranged obliquely on the top of the separation bin (1), and the bottom end of the material guiding cylinder (41) passing through the separation bin (1) and extending to the interior of the filter bin (31), a connecting plate (45) being fixedly mounted on the top end of the material guiding cylinder (41), and liquid holes being provided at both upper and lower ends of the outer side of the material guiding cylinder (41).

9. The oil-water separation equipment for treating wastewater from a canteen according to claim 8, characterized in that: A motor (42) is fixedly mounted on the top of the connecting disk (45); an output end of the motor (42) passes through the connecting disk (45) and extends into the interior of the material guide cylinder (41); a rotating shaft (46) is fixedly mounted on the output end of the motor (42); an auger plate (47) is fixedly mounted on the outer side of the rotating shaft (46); and notches are evenly formed on the outer side of the auger plate (47).

10. The oil-water separation equipment for treating wastewater from a canteen according to claim 9, characterized in that: The outer side of the material guide cylinder (41) is provided with a discharge port, and a connecting bin (43) is installed at the discharge port of the material guide cylinder (41), a slag collecting bin (44) is fixedly installed at the bottom of the connecting bin (43), the lower half of the slag collecting bin (44) is located in the separation area of ​​the separation bin (1), and water control grooves are symmetrically provided at the bottom of the outer side of the slag collecting bin (44).

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