Kitchen garbage pretreatment device capable of realizing solid-liquid separation and oil-water separation

Abstract

The utility model discloses a kitchen garbage pretreatment device capable of realizing solid-liquid separation and oil-water separation, which comprises an oil-water separator and a solid-liquid separator, a vertical shaft and a blade are arranged in the oil-water separator, a feed port and an oil suction pipe are arranged at the top of the oil-water separator, a mesh cylinder is transversely fixed at the upper part in the solid-liquid separator, and a filter screen is arranged on the mesh cylinder. The two ends of the net barrel are the feeding end and the discharging end respectively, a vertical pipe at the bottom of the oil-water separator is communicated with the net barrel close to the feeding end, a valve is arranged on the vertical pipe, and a slag box communicated with the discharging end is arranged on one side of the solid-liquid separator. Extrusion air cylinders are arranged on the side wall of the oil-water separator on one side of the feeding end and the side wall of the slag box opposite to the discharging end; and extrusion plates are arranged after piston rods of the extrusion air cylinders extend into the net barrel. The utility model has the advantages of thorough separation, high separation efficiency and good separation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste treatment equipment, and in particular to a kitchen waste pretreatment device capable of realizing solid-liquid separation and oil-water separation. Background Art

[0002] Kitchen waste refers to the waste generated in residents' daily life, food processing, catering services, unit catering and other activities, and also includes wastewater containing a lot of oil after washing kitchen utensils. It mainly comes from family kitchens, restaurants, canteens, markets and other industries related to food processing. Kitchen waste is mainly composed of waste oil, wastewater and solid residues. Compared with other domestic waste, kitchen waste has the characteristics of high water content, high organic content, high oil and salt content, etc., and has great recycling value. The waste oil can be used as biodiesel after proper treatment, and the solid residue can be used to make fertilizer. In order to facilitate treatment, these parts usually need to be separated and pre-treated, and then separated for subsequent treatment.

[0003] The separation pretreatment of kitchen waste mainly includes two separation processes: solid-liquid separation and oil-water separation. When performing solid-liquid separation, the existing separation equipment simply removes the solid waste from the oil, and the solid waste still contains a large amount of water and oil, which leads to incomplete separation and unsatisfactory separation effect. Secondly, when performing oil-water separation, the oil-water stratification is mostly achieved by standing, which is prone to incomplete separation. The wastewater after separation still contains small oil droplets, and it is not easy to extract according to the height of the oil layer after the oil-water stratification. The efficiency of oil-water separation is not high and the effect is not good. Therefore, it is an objective need to develop a kitchen waste pretreatment device that can achieve solid-liquid separation and oil-water separation with thorough separation, high separation efficiency and good separation effect. Utility Model Content

[0004] The utility model aims to provide a kitchen waste pretreatment device which has thorough separation, high separation efficiency and good separation effect and can realize solid-liquid separation and oil-water separation.

[0005] The purpose of the utility model is achieved in this way, including an oil-water separator and a solid-liquid separator, a vertical shaft is arranged in the oil-water separator, the upper end of the vertical shaft is transmission-connected with a driving mechanism, a blade is arranged on the vertical shaft, a feed port and an oil suction pipe are arranged on the top of the oil-water separator, the oil suction pipe is sealed and slidably connected with the top of the oil-water separator, a lifting mechanism capable of driving the oil suction pipe to move up and down is installed on the top of the oil-water separator, a mesh cylinder is transversely fixed on the upper part of the solid-liquid separator, the two ends of the mesh cylinder are respectively a feed end and a discharge end, a vertical pipe at the bottom of the oil-water separator is connected with the mesh cylinder near the feed end, a valve is arranged on the vertical pipe, a slag box connected with the discharge end is arranged on one side of the solid-liquid separator, an extrusion cylinder is arranged on the side wall of the oil-water separator on the feed end side and on the side wall of the slag box opposite to the discharge end, and an extrusion plate is arranged after the piston rod of the extrusion cylinder extends into the mesh cylinder.

[0006] Furthermore, an oil storage tank is arranged outside the oil-water separator, the oil inlet of the oil storage tank is connected to the oil suction pipe, and an oil drain pipe is arranged on the side wall of the solid-liquid separator below the mesh cylinder, and the oil drain pipe is connected to the oil inlet of the oil storage tank.

[0007] Furthermore, the bottom of the oil storage tank is connected to the solid-liquid separator through a connecting pipe.

[0008] Furthermore, a mesh sleeve is provided at the lower end of the oil suction pipe.

[0009] Furthermore, a filter screen is obliquely arranged at the lower part of the solid-liquid separator, a slag discharge port is arranged on the side wall of the solid-liquid separator above the lower end of the filter screen, and a water discharge port is arranged at the bottom of the solid-liquid separator.

[0010] Furthermore, an ultraviolet disinfection lamp is provided in the slag box.

[0011] Furthermore, a heating element is provided in the oil-water separator.

[0012] Furthermore, the feed end of the mesh cylinder and the side wall of the solid-liquid separator, the discharge end of the mesh cylinder and the side wall of the solid-liquid separator, and the lower end of the vertical pipe and the mesh cylinder are all connected by flanges.

[0013] When the utility model is in operation, kitchen waste is put into the oil-water separator through the feed port, the input amount of kitchen waste is controlled, the driving mechanism drives the vertical shaft to rotate, and the vertical shaft drives the blade to rotate. The rotation of the blade has two functions. One is to cut the solid residue in the kitchen waste into pieces to facilitate the subsequent extrusion and dehydration, and the other is to stir the kitchen waste to separate the grease from the wastewater and the solid residue as much as possible. Then, it is left to stand for a period of time, and the grease floats on the wastewater to form a layer, and the oil suction pipe can be used to suck the grease away to complete the oil-water separation of the kitchen waste. Then, the valve is opened, and the wastewater and solid residue in the oil-water separator fall into the mesh cylinder in the solid-liquid separator through the vertical pipe. At this time, part of the wastewater directly passes through the mesh holes of the mesh cylinder and falls, and the remaining wastewater remains in the mesh cylinder together with the solid residue. When the amount of solid residue reaches a certain requirement, the two are started at the same time. Extrusion cylinder, the piston rods of the two extrusion cylinders extend at the same time, driving the extrusion plate to continuously squeeze the solid residue in the mesh cylinder. This process has two functions: one is to further crush the solid residue to facilitate subsequent recycling, and the other is to squeeze out the moisture in the solid residue as much as possible to achieve solid-liquid separation of kitchen waste. When no more moisture leaks from the mesh cylinder, the piston rod of the extrusion cylinder on the solid-liquid separator continues to extend forward, while the piston rod of the extrusion cylinder on the slag box shortens in the opposite direction, driving the solid residue in the mesh cylinder from which the moisture has been removed to move toward the slag box until it falls into it. Then the two extrusion cylinders return to their initial positions, ready to extrude the next batch of kitchen waste. The solid-liquid separation of kitchen waste is completed through the above steps, the separated wastewater is located in the solid-liquid separator below the mesh cylinder, and the separated solid residue is located in the slag box. In the utility model, when performing oil-water separation, the kitchen waste is shredded and stirred by a rotating blade, which greatly reduces the hiding space of grease, so that the grease can contact with the wastewater, and in the stirring process, it is separated from the solid residue and the wastewater and floats on the upper layer of the wastewater. Compared with the traditional method of performing oil-water separation by only standing, the degree of grease separation is more thorough, and the wastewater basically does not contain oil droplets after separation. When extracting grease, the oil suction pipe can be driven up and down by the lifting mechanism to determine the position of the lower end of the oil suction pipe, which can effectively adapt to the height and thickness of the oil layer after the oil-water stratification, and can extract the grease more thoroughly, and the efficiency of oil-water separation is high and the effect is better; secondly, when performing solid-liquid separation, the utility model adopts a combination of two extrusion cylinders and a mesh cylinder, which can not only crush the solid residue, but also squeeze out the water from the solid residue more thoroughly, the solid-liquid separation is more thorough, and the water content in the solid residue after separation is extremely low, which has a better separation effect. In summary, the utility model has the advantages of thorough separation, high separation efficiency and good separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] In the figure: 1-oil-water separator, 2-solid-liquid separator, 3-driving mechanism, 4-blade, 5-oil suction pipe, 6-net cylinder, 7-feed end, 8-discharge end, 9-vertical pipe, 10-slag box, 11-extrusion cylinder, 12-extrusion plate, 13-oil storage tank, 14-oil drain pipe, 15-connecting pipe, 16-net sleeve, 17-filter, 18-ultraviolet disinfection lamp, 19-heating element, 20-flange. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the present invention belong to the protection scope of the present invention.

[0017] like Figure 1 As shown, the utility model includes an oil-water separator 1 and a solid-liquid separator 2. A vertical shaft is arranged in the oil-water separator 1. The upper end of the vertical shaft is connected to a driving mechanism 3. The driving mechanism 3 is a prior art that can drive the vertical shaft and the blade 4 to rotate. Generally, a motor and a gearbox are combined. A blade 4 is arranged on the vertical shaft. A feed port and an oil suction pipe 5 are arranged on the top of the oil-water separator 1. The oil suction pipe 5 is sealed and slidably connected to the top of the oil-water separator 1. The oil suction pipe 5 can move up and down freely, and the oil suction pipe 5 and the top of the oil-water separator 1 have a sealing effect to prevent the internal exhaust gas from escaping. A lifting mechanism that can drive the oil suction pipe 5 to move up and down is installed on the top of the oil-water separator 1. The lifting mechanism can It is enough to drive the oil suction pipe 5 to move up and down. A cylinder structure can be selected, and other structural forms can also be selected. A mesh tube 6 is fixed horizontally on the upper part of the solid-liquid separator 2. The two ends of the mesh tube 6 are respectively a feed end 7 and a discharge end 8. The vertical pipe 9 at the bottom of the oil-water separator 1 is connected to the mesh tube 6 near the feed end 7. A valve is arranged on the vertical pipe 9. A slag box 10 connected to the discharge end 8 is arranged on one side of the solid-liquid separator 2. An extrusion cylinder 11 is arranged on the side wall of the oil-water separator 1 on the side of the feed end 7 and on the side wall of the slag box 10 opposite to the discharge end 8. After the piston rod of the extrusion cylinder 11 is extended into the mesh tube 6, an extrusion plate 12 is arranged. The extrusion plate 12 can move in the mesh tube 6 along the length direction of the mesh tube 6, similar to the piston of a cylinder.

[0018] When the utility model is in operation, kitchen waste is put into the oil-water separator 1 through the feed port, the input amount of kitchen waste is controlled, the driving mechanism 3 drives the vertical shaft to rotate, and the vertical shaft drives the blade 4 to rotate. The rotation of the blade 4 has two functions. One is to cut the solid residue in the kitchen waste into pieces to facilitate the subsequent extrusion and dehydration, and the other is to stir the kitchen waste to separate the grease from the wastewater and the solid residue as much as possible. Then, let it stand for a period of time, the grease floats on the wastewater to form a layer, and the oil suction pipe 5 can be used to suck the grease away to complete the oil-water separation of the kitchen waste. Then, open the valve, and the wastewater and solid residue in the oil-water separator 1 fall into the mesh tube 6 in the solid-liquid separator 2 through the vertical pipe 9. At this time, part of the wastewater directly passes through the mesh holes of the mesh tube 6 and falls, and the remaining wastewater is retained in the mesh tube 6 together with the solid residue. When the amount of solid residue reaches a certain requirement, the two extrusion cylinders 11 are started at the same time. The piston rods of the two extrusion cylinders 11 extend at the same time, driving the extrusion plate 12 to continuously squeeze the solid residue in the mesh tube 6. This process has two functions: one is to further crush the solid residue for subsequent recycling, and the other is to squeeze out the moisture in the solid residue as much as possible to achieve solid-liquid separation of kitchen waste. When no more moisture leaks from the mesh tube 6, the piston rod of the extrusion cylinder 11 on the solid-liquid separator 2 continues to extend forward, while the piston rod of the extrusion cylinder 11 on the slag box 10 shortens in the opposite direction, driving the solid residue in the mesh tube 6 from which moisture has been removed to move toward the slag box 10 until it falls into it. Then the two extrusion cylinders 11 return to their initial positions, ready to squeeze the next batch of kitchen waste. The solid-liquid separation of kitchen waste is completed through the above steps, and the separated wastewater is located in the solid-liquid separator 2 below the mesh tube 6, and the separated solid residue is located in the slag box 10.

[0019] In the utility model, when performing oil-water separation, the kitchen waste is shredded and stirred by the rotating blade 4, which greatly reduces the hiding space of grease, so that the grease can contact with the wastewater, and in the stirring process, it is separated from the solid residue and the wastewater and concentratedly floats on the upper layer of the wastewater. Compared with the traditional method of performing oil-water separation by only standing, the degree of grease separation is more thorough, and the wastewater basically does not contain oil droplets after separation. When extracting grease, the oil suction pipe 5 can be driven up and down by the lifting mechanism to determine the position of the lower end of the oil suction pipe 5, which can effectively adapt to the height and thickness of the oil layer after the oil-water stratification, and can more thoroughly extract the grease, and the efficiency of oil-water separation is high and the effect is better; secondly, when performing solid-liquid separation, the utility model adopts a combination of two extrusion cylinders 11 and a mesh tube 6, which can not only crush the solid residue, but also more thoroughly squeeze out the water from the solid residue, the solid-liquid separation is more thorough, and the water content in the solid residue after separation is extremely low, which has a better separation effect.

[0020] An oil storage tank 13 is arranged on the outside of the oil-water separator 1, and the oil inlet of the oil storage tank 13 is connected to the oil suction pipe 5. An oil drain pipe 14 is arranged on the side wall of the solid-liquid separator 2 below the mesh tube 6, and the oil drain pipe 14 is connected to the oil inlet of the oil storage tank 13. The oil storage tank 13 is arranged to facilitate the storage of oil and fat. At the same time, a small amount of oil and fat will be produced in the wastewater in the solid-liquid separator 2 after standing, and the oil and fat will be discharged through the oil drain pipe 14 to reduce the oil content in the wastewater.

[0021] The bottom of the oil storage tank 13 is connected to the solid-liquid separator 2 through the connecting pipe 15. The grease is stratified in the oil-water separator 1 and then extracted into the oil storage tank 13 for storage. However, after standing, it is found that a small amount of water will still sink to the bottom of the oil storage tank 13. At this time, the water can be sent to the solid-liquid separator 2 through the connecting pipe 15 to discharge the water in the oil storage tank 13 to ensure the purity of the grease.

[0022] A mesh sleeve 16 is provided at the lower end of the oil suction pipe 5. The kitchen waste is put into the oil-water separator 1 for cutting and stirring to separate the grease in the kitchen waste. However, it is found in actual use that some solid residues will float on the oil layer, which will not only affect the purity of the grease, but also may cause blockage to the oil suction pipe 5, affecting the normal extraction of the grease. In order to solve this problem, a mesh sleeve 16 is provided to filter out the above-mentioned scum to ensure the normal extraction of the grease.

[0023] The lower part of the solid-liquid separator 2 is provided with a filter screen 17 which is inclined, and a slag discharge port is provided on the side wall of the solid-liquid separator 2 above the lower end of the filter screen 17, and a drain port is provided at the bottom of the solid-liquid separator 2. It is found in actual use that some solid residues with smaller particles are discharged from the mesh holes of the mesh tube 6 along with the wastewater, resulting in a certain amount of solid residues still being contained in the wastewater. In order to remove these small particle residues in the wastewater as much as possible, a filter screen 17 is provided. In actual use, the mesh hole diameter of the filter screen 17 is made smaller than the mesh hole diameter of the mesh tube 6, and the above-mentioned small particle residues are filtered out. After accumulating to a certain extent, they are discharged from the slag discharge port, and the filtered and purified wastewater is discharged from the drain port, and subsequent purification treatment or recycling can be carried out uniformly.

[0024] An ultraviolet disinfection lamp 18 is arranged in the slag box 10 . The ultraviolet disinfection lamp 18 is a prior art and is used to disinfect and sterilize the solid residue in the slag box 10 .

[0025] A heating element 19 is provided in the oil-water separator 1. The heating element 19 is a prior art and is used to heat kitchen waste, especially in cold weather, to prevent grease from solidifying and affecting the effects of oil-water separation and solid-liquid separation.

[0026] The feed end 7 of the net cylinder 6 and the side wall of the solid-liquid separator 2, the discharge end 8 of the net cylinder 6 and the side wall of the solid-liquid separator 2, and the lower end of the vertical pipe 9 and the net cylinder 6 are all connected by flanges 20. During the use of the utility model, the solid residues in the kitchen waste are squeezed in the net cylinder 6, and the net cylinder 6 is constantly subjected to friction between the squeezing plate 12 and the solid residues, and is also squeezed by the solid residues. With the extension of the use time, the net cylinder 6 may be deformed or even damaged, and needs to be repaired or replaced. In order to facilitate the disassembly and installation of the net cylinder 6, the flange is used to fix and connect it, so as to improve the efficiency of the disassembly and installation of the net cylinder 6.

Claims

1. A kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation, comprising an oil-water separator (1) and a solid-liquid separator (2), characterized in that The oil-water separator (1) is provided with a vertical shaft, the upper end of the vertical shaft is connected to a driving mechanism (3), a blade (4) is provided on the vertical shaft, a feed port and an oil suction pipe (5) are provided at the top of the oil-water separator (1), the oil suction pipe (5) is sealed and slidably connected to the top of the oil-water separator (1), a lifting mechanism capable of driving the oil suction pipe (5) to move up and down is installed at the top of the oil-water separator (1), a net cylinder (6) is transversely fixed to the upper part of the solid-liquid separator (2), and the two ends of the net cylinder (6) are respectively a feed end (7 ) and a discharge end (8), a vertical pipe (9) at the bottom of the oil-water separator (1) is connected to a mesh tube (6) near the feed end (7), a valve is provided on the vertical pipe (9), a slag box (10) connected to the discharge end (8) is provided on one side of the solid-liquid separator (2), an extrusion cylinder (11) is provided on the side wall of the oil-water separator (1) on the side of the feed end (7) and on the side wall of the slag box (10) opposite to the discharge end (8), and an extrusion plate (12) is provided after the piston rod of the extrusion cylinder (11) extends into the mesh tube (6).

2. A kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 1, characterized in that An oil storage tank (13) is arranged outside the oil-water separator (1), and the oil inlet of the oil storage tank (13) is connected to the oil suction pipe (5). An oil discharge pipe (14) is arranged on the side wall of the solid-liquid separator (2) below the mesh cylinder (6), and the oil discharge pipe (14) is connected to the oil inlet of the oil storage tank (13).

3. A kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 2, characterized in that The bottom of the oil storage tank (13) is connected to the solid-liquid separator (2) via a connecting pipe (15).

4. The kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 1, characterized in that The lower end of the oil suction pipe (5) is provided with a mesh sleeve (16).

5. The kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 1, characterized in that A filter screen (17) is obliquely arranged at the lower part of the solid-liquid separator (2), a slag discharge port is arranged on the side wall of the solid-liquid separator (2) above the lower end of the filter screen (17), and a water discharge port is arranged at the bottom of the solid-liquid separator (2).

6. The kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 1, characterized in that An ultraviolet disinfection lamp (18) is arranged in the slag box (10).

7. The kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 1, characterized in that A heating element (19) is provided in the oil-water separator (1).

8. The kitchen waste pretreatment device capable of achieving solid-liquid separation and oil-water separation according to claim 1, characterized in that The feed end (7) of the mesh cylinder (6) and the side wall of the solid-liquid separator (2), the discharge end (8) of the mesh cylinder (6) and the side wall of the solid-liquid separator (2), and the lower end of the vertical pipe (9) and the mesh cylinder (6) are all connected via flanges (20).

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