Waste grease pretreatment separation device

Abstract

The utility model relates to the technical field of waste grease treatment, in particular to a waste grease pretreatment and separation device which comprises a receiving hopper and a conveying and separating assembly, the conveying and separating assembly comprises a shell, a spiral conveying unit and a power unit for providing power for the spiral conveying unit, and the interior of the shell is divided into a conveying area and an extrusion area. The spiral conveying unit is arranged in the conveying area, through holes are formed in the upper side and the lower side of a shell of the conveying area, the through hole in the upper side is communicated with a receiving hopper, a screen is arranged at the through hole in the lower side, an impurity outlet is formed in the shell of the extrusion area, and a blocking structure is arranged at the impurity outlet; the extrusion area is of a cavity structure, and a gap exists between the spiral conveying unit and the shell. The utility model solves the problem that the recovery rate of the grease is not high because the grease attached to the sundries is brought out together when the sundries and the grease are separated by utilizing a screen or manually.

Description

Technical Field

[0001] This utility model relates to the field of waste oil treatment technology, specifically to a waste oil pretreatment and separation device. Background Technology

[0002] Waste oils mainly include waste cooking oil, animal fats, vegetable oil by-products, and swill oil. If these oils are not treated, they will cause serious pollution to the environment. However, if they are used in a comprehensive manner, they can be used for biodiesel production, chemical product production, power generation, and heating. Therefore, the comprehensive utilization of waste oils can not only reduce environmental pollution, but also promote the development of a circular economy.

[0003] However, in practice, the collected waste oil often contains a large amount of impurities, including plastics, food scraps, and metal shavings. These impurities make it impossible for the waste oil to be directly used for reprocessing or energy conversion. In the past, the impurities were separated from the oil by setting a screen at the front end of the material hopper or by manually removing the impurities. However, the oil attached to the impurities would be carried out with them, resulting in a low oil recovery rate. Utility Model Content

[0004] This invention addresses the problem that when separating impurities and grease using sieves or manually, the grease attached to the impurities is carried out along with the impurities, resulting in a low grease recovery rate. It provides a waste grease pretreatment and separation device that separates impurities from grease while simultaneously squeezing the impurities against each other, thus ensuring a high grease recovery rate.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] A waste oil pretreatment and separation device includes a receiving hopper and a conveying and separating assembly, wherein the conveying and separating assembly includes a housing, a screw conveying unit, and a power unit that provides power to the screw conveying unit;

[0007] The outer shell is divided into a conveying area and a pressing area. The spiral conveying unit is located in the conveying area. The upper and lower sides of the outer shell of the conveying area are provided with through holes. The upper through hole is connected to the receiving hopper. The lower through hole is provided with a screen. The outer shell of the pressing area is provided with a debris outlet. The debris outlet is provided with a sealing structure.

[0008] The extrusion zone has a hollow structure, and there is a gap between the spiral conveying unit and the outer shell.

[0009] Using the above scheme, after the waste oil enters the conveying and separating component through the receiving hopper, the impurities and oil will be separated at the screen. The impurities will be conveyed to the squeezing zone by the screw conveyor unit in the conveying zone, and then discharged from the impurity outlet of the squeezing zone, thereby preventing the impurities from accumulating and clogging the screen.

[0010] Furthermore, because the extrusion zone has a hollow structure and a sealing structure is provided at the debris outlet, when debris is conveyed to the extrusion zone by the screw conveyor unit, it will not be discharged directly from the debris outlet, but will accumulate in the extrusion zone. When a certain amount is accumulated, the debris will squeeze each other in the extrusion zone, thereby squeezing out the grease attached to the debris. Moreover, because there is a gap between the screw conveyor unit and the outer shell, the squeezed grease can flow back to the screen, thereby realizing grease recovery and ensuring the grease recovery rate. When it is necessary to clean the debris, the sealing structure at the debris outlet can be opened to discharge the debris.

[0011] Based on the above solution, the present invention can be further improved as follows.

[0012] Furthermore, both the upper and lower through holes are located on the end of the outer shell of the conveying area away from the extrusion area, and their positions correspond vertically.

[0013] Furthermore, the conveying and separating assembly is inclined, so that one end of the outer shell extrusion area is higher than one end of the conveying area, making it easier for the grease squeezed out from the debris to flow back to the screen.

[0014] Furthermore, a discharge pipe is connected to the through hole, the discharge pipe is equipped with a sealing structure, and a discharge pump is connected to the bottom of the discharge pipe. The discharge pump can quickly extract the separated grease.

[0015] Furthermore, the sealing structure is a valve.

[0016] Furthermore, the power unit is an electric motor.

[0017] Furthermore, the receiving hopper is equipped with a steam heating pipe, which can heat the waste oil, increase the fluidity of the waste oil, prevent it from adhering to the debris, and thus improve the separation efficiency of debris and oil.

[0018] Furthermore, a rinsing port is provided above and / or below the screen for cleaning the screen, further preventing screen blockage and ensuring continuous and stable operation of the separation device.

[0019] The beneficial effects of this utility model through the above technical solution are as follows:

[0020] 1. In this utility model, after the waste oil enters the conveying and separating component through the receiving hopper, the impurities and oil will be separated at the screen. Then the impurities will be conveyed to the squeezing area by the spiral conveying unit in the conveying area. They will be squeezed together to squeeze out the oil attached to the impurities. The squeezed-out oil can flow back to the screen for discharge, thereby ensuring the oil recovery rate.

[0021] 2. In this utility model, by providing a steam heating pipe on the receiving hopper, the waste oil can be heated, increasing the fluidity of the waste oil and preventing it from adhering to impurities, thereby improving the separation efficiency of impurities and oil.

[0022] 3. In this utility model, by providing rinsing ports above and / or below the screen, the screen can be rinsed effectively, thereby preventing screen blockage and ensuring the continuous and stable operation of the separation device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0025] Figure 3 This is a top view of the receiving hopper and steam heating pipe in this utility model.

[0026] The attached diagram is labeled as follows: 1 is the receiving hopper, 2 is the conveying and separating assembly, 21 is the outer shell, 22 is the screw conveyor unit, 23 is the power unit, 24 is the debris outlet, 25 is the screen, 3 is the sealing structure, 4 is the discharge pipe, 5 is the discharge pump, 6 is the steam heating pipe, and 7 is the rinsing port. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] like Figures 1-3 As shown, a waste oil pretreatment and separation device includes a receiving hopper 1 and a conveying and separation assembly 2. The conveying and separation assembly 2 includes a housing 21, a spiral conveying unit 22, and a power unit 23 that provides power to the spiral conveying unit 22. The power unit 23 is a motor. The spiral conveying unit 22 includes a shaft and spiral blades. The spiral blades are fixedly mounted on the shaft. The output shaft of the motor is fixedly connected to the shaft, thereby providing power to the spiral conveying unit.

[0029] In this embodiment, the spiral conveying unit 22 has a low rotation speed and the motor is equipped with a frequency converter. When the conveying pressure of the spiral conveying unit 22 is too high, the frequency converter will trigger an overcurrent alarm. The model of the motor used is: FAF77-Y5.5-6P-49.01-M4-270°-1, and the model of the frequency converter used is: ACS550-01-012A-4.

[0030] The outer shell 21 is divided into a conveying area and a pressing area. The spiral conveying unit 22 is located in the conveying area. The upper and lower sides of the outer shell 21 of the conveying area are provided with through holes. The upper through hole is connected to the receiving hopper 1. The lower through hole is provided with a screen 25 for separating grease and impurities from waste oil. The impurities isolated by the screen 25 are conveyed away by the spiral conveying unit 22, and the grease flows out through the screen 25. The outer shell 21 of the pressing area is provided with an impurity outlet 24, and a sealing structure 3 is provided at the impurity outlet 24.

[0031] The extrusion zone is a hollow structure, meaning that the extrusion zone does not have a spiral conveying unit 22. The size of the hollow structure can be adjusted according to different receiving bucket volumes and the impurity content of waste oil. There is a gap between the spiral conveying unit 22 and the outer shell 21.

[0032] In one possible implementation, the upper through hole and the lower through hole are both located on the end of the outer shell 21 in the conveying area away from the extrusion area, and their positions correspond vertically.

[0033] As one possible implementation, the conveying and separating component 2 is inclined, such that one end of the squeezing area of ​​the outer shell 21 is higher than one end of the conveying area, making it easier for the grease squeezed out from the debris to flow back to the screen 25.

[0034] As one possible implementation, a discharge pipe 4 is connected to the through hole, and the grease separated by the screen 25 flows out through the discharge pipe 4. The discharge pipe 4 is provided with a sealing structure 3, and a discharge pump 5 is connected to the bottom of the discharge pipe 4. The discharge pump 5 is designed to quickly extract the separated grease.

[0035] As one possible implementation, the sealing structure 3 is a valve.

[0036] As one possible implementation, the receiving hopper 21 is provided with a steam heating pipe 6. In this embodiment, the steam heating pipe 6 has an air hole and is connected to an external steam generating device, which can spray high-temperature steam to heat the waste oil, increase the fluidity of the waste oil, prevent it from adhering to the debris, and thus improve the separation efficiency of debris and oil.

[0037] As one possible implementation, a rinsing port 7 is provided above and / or below the screen 25. The rinsing port 7 is connected to an external water source for cleaning the screen 25, further preventing the screen 25 from clogging and ensuring the continuous and stable operation of the separation device.

[0038] In this embodiment, the screen 25 is provided with rinsing ports 7 above and below, and the water source is a hot water source.

[0039] In this embodiment, when used:

[0040] Pour the waste oil into the receiving hopper 1, turn on the discharge pump 5, and after the discharge pump 5 is running stably, open the valve at the discharge pipe 4; after the waste oil enters the conveying and separating component 2 through the receiving hopper 1, the impurities and oil are separated at the screen 25, the impurities are conveyed to the extrusion zone by the spiral conveying unit 22 in the conveying zone, and the oil is drawn out by the discharge pump 5 along the discharge pipe 4.

[0041] When the debris is conveyed to the extrusion zone, since the extrusion zone has a cavity structure and the debris outlet 24 is equipped with a sealing structure 3, the debris will not be discharged directly from the debris outlet 24, but will accumulate in the extrusion zone. When a certain amount is accumulated, the debris will squeeze each other in the extrusion zone, thereby squeezing out the grease attached to the debris. The squeezed grease flows back to the screen 25 through the gap between the screw conveyor unit 22 and the outer shell 21, and is then extracted by the discharge pump 5. This can effectively prevent the grease attached to the debris from being directly carried out, which would reduce the grease recovery rate.

[0042] When a lot of debris accumulates in the extrusion zone, the conveying pressure of the screw conveyor unit 22 will increase, which will trigger an overcurrent alarm on the frequency converter. This indicates that the debris needs to be cleaned, so the valve at the debris outlet 24 is opened. Under the operation of the screw conveyor unit 22, the extruded debris is discharged from the debris outlet 24. When the frequency converter stops alarming, the valve at the debris outlet 24 is closed again. This process is repeated to separate the debris from the grease in the waste oil.

[0043] After the waste oil is processed, connect the hot water source to the flushing port 7 and flush the screen 25 from both above and below. After the screen 25 is flushed, first close the valve at the discharge pipe 4, and then close the discharge pump 5.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present invention without departing from the spirit of the present invention or the scope of disclosure shall fall within the protection scope of the present invention.

Claims

1. A waste oil pretreatment and separation device, comprising a receiving hopper (1) and a conveying and separating assembly (2), wherein the conveying and separating assembly (2) comprises a housing (21), a screw conveying unit (22), and a power unit (23) for providing power to the screw conveying unit (22), characterized in that, The outer shell (21) is divided into a conveying area and a pressing area. The spiral conveying unit (22) is located in the conveying area. The upper and lower sides of the outer shell (21) of the conveying area are provided with through holes. The upper through hole is connected to the receiving hopper (1). The lower through hole is provided with a screen (25). The outer shell (21) of the pressing area is provided with a debris outlet (24). The debris outlet (24) is provided with a sealing structure (3). The extrusion zone has a cavity structure, and there is a gap between the spiral conveying unit (22) and the outer shell (21).

2. The waste oil pretreatment and separation device according to claim 1, characterized in that, The upper and lower through holes are both located on one end of the outer shell (21) of the conveying area away from the extrusion area, and their positions correspond vertically.

3. The waste oil pretreatment and separation device according to claim 1, characterized in that, The conveying and separating component (2) is inclined such that one end of the squeezing area of ​​the outer shell (21) is higher than one end of the conveying area.

4. The waste oil pretreatment and separation device according to claim 1, characterized in that, The through hole is connected to a discharge pipe (4), the discharge pipe (4) is provided with a sealing structure (3), and the bottom of the discharge pipe (4) is connected to a discharge pump (5).

5. A waste oil pretreatment and separation device according to any one of claims 1 to 4, characterized in that, The sealing structure (3) is a valve.

6. A waste oil pretreatment and separation device according to any one of claims 1 to 4, characterized in that, The power unit (23) is an electric motor.

7. A waste oil pretreatment and separation device according to any one of claims 1 to 4, characterized in that, The receiving hopper (1) is equipped with a steam heating pipe (6).

8. A waste oil pretreatment and separation device according to any one of claims 1 to 4, characterized in that, The screen (25) is provided with a rinsing port (7) above and / or below it.

Images