Edible oil centrifugal filtration equipment

Abstract

The invention discloses edible oil centrifugal filtration equipment which comprises a machine body structure and a control console for adjusting the rotating speed, a bin cover is installed at the upper end of the machine body structure, the control console is integrated on the bin cover, and the edible oil centrifugal filtration equipment further comprises oil inlet equipment, an oil well pump, a centrifugal assembly, an extrusion assembly, a storage barrel, a first driving device, a second driving device and an oil outlet device. The extrusion assembly and the centrifugal assembly are coaxially installed, the centrifugal assembly and the extrusion assembly are both rotationally installed with the machine body structure, the first driving device drives the centrifugal assembly to rotate at a high speed, and the second driving device drives the extrusion assembly to rotate at a low speed. Waste residues generated by oil filtering are taken out from the centrifugal assembly through the extrusion assembly; according to the device, solid-phase particles in crude oil are separated in a centrifugal mode, the separated solid-phase particles can be pushed out, the separation efficiency is high, and maintenance is more convenient.

Description

Technical Field

[0001] The present invention relates to an edible oil centrifugal filtration device. Background Art

[0002] During the production and processing of edible oil, it often contains solid impurities (such as cake meal, fibers, gums, etc.), moisture and other suspended substances. These impurities will affect the transparency, flavor, storage stability and edible safety of the oil product. Therefore, the filtration process in the edible oil refining process is crucial. Traditional filtration technologies mainly include gravity sedimentation, plate and frame filtration, bag filtration and membrane filtration, etc. However, these methods generally have problems such as low efficiency, high energy consumption, frequent filter medium replacement or unsatisfactory separation effect.

[0003] Limitations of Traditional Filtration Technologies

[0004] Gravity sedimentation method: It relies on the natural sedimentation of impurities, which takes a long time and is difficult to separate micron-sized particles, and cannot meet the requirements of industrial continuous production.

[0005] Plate and frame filtration: Although it can effectively intercept solid impurities, the filter cloth is easy to be blocked, and it needs to be frequently shut down for cleaning, resulting in low production efficiency. Moreover, the oil content in the waste residue is high (about 15%-20%), causing waste of oil.

[0006] Membrane filtration: Although it has high precision, the equipment cost is expensive, and it is easy to cause membrane pollution due to the high viscosity of the oil, resulting in high maintenance cost.

[0007] Based on the above problems, we have designed an edible oil centrifugal filtration device that separates solid-phase particles in crude oil by centrifugation, and can push out the separated solid-phase particles, with high separation efficiency and more convenient maintenance. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an edible oil centrifugal filtration device that separates solid-phase particles in crude oil by centrifugation, and can push out the separated solid-phase particles, with high separation efficiency and more convenient maintenance.

[0009] To solve the above problems, the present invention adopts the following technical solutions:

[0010] An edible oil centrifugal filtration device includes a body structure and a control console for adjusting the rotation speed. A bin cover is installed at the upper end of the body structure, and the control console is integrated on the bin cover. It further includes an oil inlet device, a suction pump, a centrifugal component, an extrusion component, a storage barrel, a first driving device, a second driving device, and an oil outlet device. The extrusion component is coaxially installed with the centrifugal component, and both the centrifugal component and the extrusion component are rotatably installed on the body structure. The first driving device drives the centrifugal component to rotate at a high speed, and the second driving device drives the extrusion component to rotate slowly. The waste residue generated by oil filtration is taken out of the centrifugal component through the extrusion component, and the filtered edible oil is extracted into the storage barrel through the oil outlet device. The suction pump is connected with a suction pipe and a delivery pipe. The suction pipe is connected to the oil inlet device, and the delivery pipe cooperates with the extrusion component. The suction pump, the first driving device, the second driving device, and the oil outlet device are controlled through connection with the control console.

[0011] Preferably, the oil inlet device includes an oil inlet barrel, an inner tube body, a shunt cover, and an electric heater. A conical gathering part is formed by machining at the bottom of the oil inlet barrel. A connecting pipe is welded at the axial center of the bottom of the gathering part. The inner tube body is threadedly connected to the axial center of the gathering part. Slots are machined on the outer wall of the inner tube body, and a filter screen is welded in the slots. The shunt cover is frustum-shaped with a gradually decreasing diameter downward. A connecting part is installed at the axial center of the bottom of the shunt cover. The connecting part is inserted downward into the upper end of the inner tube body and fixed. The electric heater is connected with an electric heating pipe. The edible oil shunted by the shunt cover contacts the electric heating pipe after falling. The suction pipe is connected to the connecting pipe. A plurality of overflow holes are arranged on the outer wall of the connecting part, and the overflow holes are exposed above the inner tube body.

[0012] Preferably, an oil inlet pipe is installed at the axial center of the oil inlet barrel. A bracket is fixed between the oil inlet pipe and the oil inlet barrel. The oil inlet pipe is coaxial with the shunt cover. A concave hole is machined at the top of the shunt cover, and a filter cylinder is fixed in the concave hole. The oil inlet pipe delivers oil into the filter cylinder.

[0013] Preferably, the centrifugal component includes a centrifugal cylinder and a slag discharge box. A hollow shaft is arranged at one end of the centrifugal cylinder. A conical barrel is fixedly installed at the end of the centrifugal cylinder away from the hollow shaft. The diameter of the conical barrel gradually decreases in the direction away from the centrifugal cylinder. The end of the conical barrel is inserted into the slag discharge box. The extrusion component passes through the slag discharge box and then is inserted into the centrifugal cylinder. The slag discharge box is fixed to the body structure. The slag discharge box and the conical barrel are rotatably matched. The hollow shaft and the body structure are rotatably matched. The oil outlet device is installed through the hollow shaft. The first driving device is connected to drive the hollow shaft. A slag discharge channel is welded obliquely downward on the outside of the slag discharge box, and the slag discharge channel penetrates to the outside of the body structure.

[0014] Preferably, an annular recess is machined at a position on the outer wall of the centrifugal cylinder away from the conical barrel. The edible oil separated under the centrifugal force of the centrifugal cylinder converges into the annular recess, and the oil outlet device cooperates with the annular recess.

[0015] Preferably, the oil outlet device includes an oil outlet pipe, a push rod, and a three-axis cylinder. The oil outlet pipe is coaxially inserted into the hollow shaft, and the oil outlet pipe and the hollow shaft are rotationally matched. A support body is fixedly installed between the oil outlet pipe and the body structure. A first connecting pipe is arranged on the side of the oil outlet pipe, and a first oil pump is connected through the first connecting pipe. The first oil pump is connected with a three-way valve, and a first oil outlet pipe and a return pipe are connected through the three-way valve. A sub-control valve is installed on the three-way valve, one sub-control valve corresponds to the first oil outlet pipe, and the other sub-control valve corresponds to the return pipe. The end of the return pipe is inserted into the oil inlet device; the first oil outlet pipe corresponds to the storage barrel. The three-axis cylinder is fixedly installed through the support body. A connecting plate is fixed to the outside of the push rod, and the connecting plate is fixed to the movable end of the three-axis cylinder. The push rod is coaxial with the oil outlet pipe, and the push rod is inserted into the oil outlet pipe. The push rod and the oil outlet pipe are in clearance fit, and the edible oil passes through the clearance. The end of the oil outlet pipe is threadedly connected with a pipe cap, and a sealing ring is clamped between the pipe cap and the oil outlet pipe. The push rod passes through the sealing ring and forms a seal with the sealing ring; the oil outlet pipe passes through the hollow shaft and is inserted into the centrifugal cylinder. A housing is arranged at this end, and a housing cover is detachably installed at the end of the housing. More than two sleeves are annularly arranged on the outer wall of the housing. A movable pipe is slidably installed in the sleeve. Both ends of the movable pipe are spherically transitioned. Through holes are arranged on the spherical surfaces at both ends of the movable pipe. A limit cap is installed at the pipe orifice of the sleeve. A limit ring is fixedly arranged at the position where the movable pipe is located in the sleeve. A sealing ring is clamped on the outer wall of the limit ring. A seal is formed between the sealing ring and the inner wall of the sleeve. A spring is sleeved on the movable pipe, and the spring acts between the limit cap and the limit ring. Under the action of the spring, the movable pipe slides towards the inside of the sleeve. The push rod is inserted into the housing, and a push block is fixed at the end of the push rod inserted into the housing. The push block has an outer conical surface, and the outer conical surface acts on the spherical surface of the movable pipe. The outer end of the movable pipe is located in the annular recess.

[0016] Preferably, a brush seat is fixedly installed on the outer wall of the movable pipe. Brush hairs are annularly distributed on the outer end surface of the brush seat. The spherical end of the movable pipe is located at the center of multiple bundles of the brush hairs. After the movable pipe extends, the brush hairs act on the inner wall of the annular recess.

[0017] Preferably, the extrusion assembly includes an extrusion roller. One end of the extrusion roller passes through the slag discharge box and extends into the centrifugal cylinder, and this end is closed. A first hollow shaft is fixed to the other end of the extrusion roller. The second driving device is connected to drive the first hollow shaft. The hollow shaft is rotationally matched with the body structure, and the extrusion roller is also rotationally matched with the slag discharge box. A straight pipe is inserted into the first hollow shaft, and the straight pipe is rotationally matched with the first hollow shaft. A first support body is fixed between the straight pipe and the body joint. One end of the straight pipe is inserted into the middle position of the extrusion roller, and the other end of the straight pipe is connected to the oil supply pipe. A spiral blade is fixed to the outer wall of the extrusion roller, and the spiral blade fits the inner walls of the centrifugal cylinder and the conical barrel. A plurality of conical oil nozzles are annularly distributed on the outer wall of the extrusion roller.

[0018] Preferably, a plurality of dispersion plates are annularly arranged at the position of the extrusion roller corresponding to the slag discharge box.

[0019] The beneficial effects of the present invention are as follows:

[0020] Advantage 1: The device separates the solid particulate matter in the crude oil by centrifugal force, and pushes out the particulate matter adhering to the inner wall of the centrifugal cylinder by means of spiral pushing, realizing automatic slag discharge. The separated edible oil accumulates on the left side of the centrifugal cylinder under the action of gravity and is extracted by means of pumping by the oil discharge device.

[0021] Advantage 2: The extraction diameter of the oil discharge device can be telescoped, which can reduce the residue of edible oil.

[0022] Advantage 3: The device realizes the preliminary filtration of the crude oil through the oil inlet device, reducing the probability of blockage of the internal pipelines of the equipment.

[0023] Advantage 4: The separation efficiency of this equipment is relatively high, the self-cleaning ability of the equipment is relatively strong, and the maintenance is more convenient, which is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the cooperation between the centrifugal assembly and the extrusion assembly;

[0027] Figure 3It is a cross-sectional view of the oil inlet device;

[0028] Figure 4 It is a partial schematic diagram of the present invention;

[0029] Figure 5 It is Figure 2 in the partial schematic diagram;

[0030] Figure 6 It is a half cross-sectional view of the oil outlet device;

[0031] Figure 7 It is an enlarged view at B;

[0032] Figure 8 It is an enlarged view at C;

[0033] Figure 9 It is an enlarged view at D;

[0034] Figure 10 It is an enlarged view at E;

[0035] Figure 11 It is a bottom view of the brush holder;

[0036] Figure 12 It is an enlarged view at A. Detailed implementation manners

[0037] All the features disclosed in this specification, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0038] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically recited, can be replaced by other equivalent or features with similar purposes. That is, unless specifically recited, each feature is only an example of a series of equivalent or similar features.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "central", "end portion", "length", "outer end", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In addition, in the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present invention, unless otherwise clearly specified and defined, terms such as "arranged", "socketed", "connected", "penetrated", "plugged in" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Refer to Figure 1 and Figure 2 A kind of centrifugal filtration equipment for edible oil shown, which includes a body structure 1 and a control console 2 for adjusting the rotation speed. A cover 3 is installed at the upper end of the body structure 1, and the control console 2 is integrated on the cover 3. It also includes an oil inlet device 4, a suction oil pump, a centrifugal component 6, an extrusion component 7, a storage barrel 8, a first driving device 9, a second driving device 10 and an oil outlet device 11. The extrusion component 7 is coaxially installed with the centrifugal component 6. Both the centrifugal component 6 and the extrusion component 7 are rotatably installed on the body structure 1. The first driving device 9 drives the centrifugal component 6 to rotate at a high speed, and the second driving device 10 drives the extrusion component 7 to rotate at a low speed. The waste residue generated by oil filtration is taken out of the centrifugal component 6 through the extrusion component 7, and the filtered edible oil is pumped into the storage barrel 8 through the oil outlet device 11. The suction oil pump is connected with a suction oil pipe 12 and a delivery oil pipe 13. The suction oil pipe 12 is connected to the oil inlet device 4, and the delivery oil pipe 13 cooperates with the extrusion component 7; the suction oil pump, the first driving device 9, the second driving device 10 and the oil outlet device 11 are connected and controlled through the control console 2.

[0043] In the above technical solution, the edible oil squeezed out by the oil press is pumped into the oil inlet device 4 through a pipeline, and the edible oil in the oil inlet device 4 is pumped into the extrusion component 7 through the suction oil pump and flows out from the extrusion component 7 into the centrifugal component 6.

[0044] The first driving device 9 drives the centrifugal component 6 to rotate at a high speed, and the rotation speed is 1500 - 3000 revolutions per minute. Under the high-speed rotation of the centrifugal component 6, the solid particles in the edible oil are adhered to the inner wall of the centrifugal component 6.

[0045] The extrusion component 7 rotates slowly, and the rotation speed is lower than that of the centrifugal component 6.

[0046] Due to the rotation speed difference, the extrusion component 7 pushes out the solid-phase particles adhered to the inner wall of the centrifugal component 6, while the liquid-phase edible oil gathers on the left side of the centrifugal component 6 and is pumped out through the oil outlet device 11.

[0047] The above-mentioned device can separate edible oil from residues and push out the separated residues.

[0048] Referring to Figure 3 As shown, the oil inlet device 4 includes an oil inlet barrel 41, an inner tube body 42, a flow dividing cover 43 and an electric heater 44. A conical gathering part 45 is formed by machining at the bottom of the oil inlet barrel 41. A connecting pipe 46 is welded at the bottom center of the gathering part 45. The inner tube body 42 is threadedly connected to the center of the gathering part 45. A slot is machined on the outer wall of the inner tube body 42, and a filter screen 47 is welded in the slot. The flow dividing cover 43 is frustum-shaped with a gradually decreasing diameter downward. A connecting part 48 is installed at the bottom center of the flow dividing cover 43. The connecting part 48 is inserted downward into the upper end of the inner tube body 42 and fixed. The electric heater 44 is connected with an electric heating pipe 441. The edible oil flowing through the flow dividing cover 43 contacts the electric heating pipe 441 after falling. The oil suction pipe 12 is connected to the connecting pipe 46. A plurality of overflow holes 481 are arranged on the outer wall of the connecting part 48, and the overflow holes 481 are exposed above the inner tube body 42.

[0049] In the above technical solution, the heating temperature of the electric heating pipe 441 is 70 - 80 degrees Celsius. By heating the crude oil, the viscosity of the oil can be reduced, facilitating subsequent centrifugal separation.

[0050] In the above technical solution, the crude oil is temporarily stored in the oil inlet barrel 41. When the crude oil is pumped by the oil pump, the crude oil needs to pass through the filter screen 47, so that the large particles in the crude oil are separated passively, reducing the probability of pipeline blockage.

[0051] With the design of the flow dividing cover 43, the incoming crude oil can first contact the electric heating pipe 441, improving the heating efficiency of the crude oil. When the liquid level exceeds the electric heating pipe 441, this way of dispersing into the crude oil can make the temperature of the crude oil in the oil inlet barrel 41 more uniform.

[0052] With the design of the overflow holes 481, when the filter screen is blocked, the oil level in the oil inlet barrel 41 rises. When it rises to the overflow holes 481, emergency overflow can occur.

[0053] Referring to Figure 1 、 Figure 3 and Figure 4 As shown, an oil inlet pipe 442 is installed at the center of the oil inlet barrel 41. A bracket 443 is fixed between the oil inlet pipe 442 and the oil inlet barrel 41. The oil inlet pipe 442 is coaxial with the flow dividing cover 43. A concave hole 444 is machined at the top of the flow dividing cover 43, and a filter cylinder 445 is fixed in the concave hole 444. The oil inlet pipe 442 delivers oil into the filter cylinder 445.

[0054] In the above technical solution, crude oil is transported to the center of the flow dividing cover 43 through the oil inlet pipe 442. When the crude oil is transported, it is first filtered through the filter cylinder 445. After flowing out from the filter holes of the filter cylinder 445, the crude oil is evenly divided along the flow dividing cover 43.

[0055] The filter hole size of the filter cylinder 445 is larger than that of the filter screen 47.

[0056] In this embodiment, the filter hole size of the filter cylinder 445 is 20-30 mesh, and the filter hole size of the filter screen 47 is 40-60 mesh.

[0057] Refer to Figure 1 and Figure 2 As shown, the centrifugal assembly 6 includes a centrifugal cylinder 61 and a slag discharge box 62. One end of the centrifugal cylinder 61 is provided with a hollow shaft 63. A conical barrel 64 is fixedly installed at the end of the centrifugal cylinder 61 away from the hollow shaft 63. The diameter of the conical barrel 64 gradually decreases in the direction away from the centrifugal cylinder 61. The end of the conical barrel 64 is inserted into the slag discharge box 62. The extrusion assembly 7 passes through the slag discharge box 62 and then is inserted into the centrifugal cylinder 61. The slag discharge box 62 is fixed to the body structure 1. The slag discharge box 62 and the conical barrel 64 are rotationally matched. The rotational matching is obtained through the cooperation of a bearing and a shaft seal. The shaft seal is sealed inside the bearing. The hollow shaft 63 is rotationally matched with the body structure 1. The rotational matching is supported by a bearing. The oil outlet device 11 is installed via the hollow shaft 63. The first driving device 9 is connected to drive the hollow shaft 63; the first driving device 9 is specifically a driving motor. A synchronous toothed belt is used as the connection between the driving motor and the hollow shaft 63. A slag discharge channel 662 is welded obliquely downward on the outer side of the slag discharge box 62. The slag discharge channel 662 penetrates to the outside of the body structure 1.

[0058] In the above technical solution, the slag discharge box 62 is fixed to the body structure 1 and the cover 3 through a bracket. In addition to removing slag, the slag discharge box 62 can also play a role in centering the high-speed rotating centrifugal cylinder 61, making the centrifugal cylinder 61 more stable during high-speed rotation.

[0059] With the design of the conical barrel 64, the separated edible oil can only flow in the direction of the oil outlet device 11 under the action of gravity.

[0060] Refer to Figure 5 As shown, an annular recess 661 is machined at a position on the outer wall of the centrifugal cylinder 61 away from the conical barrel 64. The edible oil separated under the centrifugal force of the centrifugal cylinder 61 converges into the annular recess 661. The oil outlet device 11 cooperates with the annular recess 661.

[0061] The design of the annular recess 661 can better collect the edible oil after separation, facilitating the extraction by the oil extraction device 11.

[0062] See Figures 5 to 10As shown, the oil outlet device 11 includes an oil outlet pipe 111, a push rod 112, and a three-axis cylinder 113. The oil outlet pipe 111 is coaxially inserted into the hollow shaft 63. The oil outlet pipe 11 and the hollow shaft 63 are in rotational cooperation, which is achieved by the cooperation of a bearing and a shaft seal. The shaft seal is sealed inside the bearing. This structure enables the hollow shaft 63 to rotate while the oil outlet pipe 11 remains stationary.A support body 114 is fixedly installed between the oil outlet pipe 11 and the body structure 1. A first connecting pipe 115 is arranged on the side of the oil outlet pipe 111. A first oil pump 116 is connected through the first connecting pipe 115. The first oil pump 116 is connected with a three-way valve 117. A first oil outlet pipe 118 and a return oil pipe 119 are connected through the three-way valve 117. A sub-control valve 120 is installed on the three-way valve 117. One sub-control valve 120 corresponds to the first oil outlet pipe 118, and the other sub-control valve 120 corresponds to the return oil pipe 119. The end of the return oil pipe 119 penetrates into the oil inlet device 4; the first oil outlet pipe 118 corresponds to the storage barrel 8. The three-axis cylinder 113 is fixedly installed through the support body 114. A connecting plate 121 is fixed outside the push rod 112. The connecting plate 121 is fixed to the movable end of the three-axis cylinder 113. The push rod 112 is coaxial with the oil outlet pipe 111. The push rod 112 penetrates into the oil outlet pipe 111. The push rod 112 and the oil outlet pipe 111 are in clearance fit. Edible oil passes through from the clearance. The end of the oil outlet pipe 111 is threadedly connected with a pipe cap 122. A sealing ring 123 is clamped between the pipe cap 122 and the oil outlet pipe 111. The push rod 122 passes through the sealing ring 123 and forms a seal with the sealing ring 123; the oil outlet pipe 111 penetrates into the centrifugal cylinder 61 through the hollow shaft 63. A shell 124 is arranged at this end. A shell cover 125 is detachably installed at the end of the shell 124. More than two sleeves 126 are annularly arranged on the outer wall of the shell 124. A movable pipe 127 is slidably installed in the sleeve 126. Both ends of the movable pipe 127 are in spherical transition. Through holes 128 are arranged on the spherical surfaces at both ends of the movable pipe 127. A limit cap 129 is installed at the pipe orifice of the sleeve 126. A limit ring 130 is fixedly arranged at the position of the movable pipe 127 located in the sleeve 126. A sealing ring 131 is clamped on the outer wall of the limit ring 130. A seal is formed between the sealing ring 131 and the inner wall of the sleeve 126. A spring 132 is sleeved on the movable pipe 127. The spring 132 acts between the limit cap 129 and the limit ring 130. Under the action of the spring 130, the movable pipe 127 slides towards the inside of the sleeve 126. The push rod 112 penetrates into the shell 124. A push block 133 is fixed at the end of the push rod 112 that penetrates into the shell 124. The push block 133 has an outer conical surface 134. The outer conical surface 134 acts on the spherical surface of the movable pipe 127. The outer end of the movable pipe 127 is located in the annular recess 661.

[0063] The specific oil outlet mode of the oil outlet device 11 is as follows:

[0064] By the movement of the three-axis cylinder 113, the position of the push rod 112 is adjusted so that the push block 133 acts on the outer end face of the movable tube 127. At this time, the through hole 128 located outside is within the annular recess 661, but the spherical end of the movable tube 127 does not contact the inner wall of the annular recess 661. Under the high-speed rotation of the centrifugal cylinder 61, the edible oil is separated from the solid-phase particulate matter. The solid-phase particulate matter is pushed out by the extrusion assembly 7 into the slag outlet box 62, while the liquid edible oil flows into the annular recess 661. Through the operation of the first oil pump 116, a negative pressure is generated at the through hole 128 to pump out the edible oil accumulated at the annular recess 661.

[0065] With the design of the sub-control valve 120, when the particulate matter content in the separated edible oil exceeds the standard, the oil can be directly returned, and the edible oil is injected into the oil inlet device 4 for direct secondary separation.

[0066] Refer to Figure 10 and Figure 11 As shown, a brush holder 14 is fixedly installed on the outer wall of the movable tube 127. Brush bristles 144 are annularly distributed on the outer end face of the brush holder 14. The spherical end of the movable tube 127 is located at the center of the multiple brush bristles 144. After the extension of the movable tube 127, the brush bristles 144 act on the inner wall of the annular recess 661.

[0067] In the above technical solution, by the further outward movement of the push block 133, the movable tube 127 is further pushed out, so that the brush bristles 144 remain in contact with the inner wall of the annular recess 661. At this time, the device enters the cleaning mode.

[0068] In the cleaning mode, high-temperature water is injected into the oil inlet device 4. The water is pumped by the oil pump into the extrusion assembly 7 and flows out of the extrusion assembly 7 into the centrifugal cylinder 61. Under the scouring of the high-temperature water, with the centrifugal cylinder 61 rotating at a speed of 500 revolutions per minute, by using the contact between the brush bristles 144 and the annular recess 661, the attached fine solid particles are washed off, and the sewage washed off is pumped out by the first oil pump 116 until the water flowing out from the first oil outlet pipe 118 is clean.

[0069] After the cleaning is completed, the push block 133 retracts, causing the spring to rebound and retracting the movable tube 127 to its original position.

[0070] The brush bristles are thick brush bristles with a wire diameter greater than 0.8 mm. Even if the brush bristles fall off, only by adding a filter screen at the oil outlet position can these fallen brush bristles be easily separated.

[0071] Refer to Figure 2 and Figure 12As shown, the extrusion assembly 7 includes an extrusion roller 71. One end of the extrusion roller 71 passes through the slag discharge box 62 and extends into the centrifugal cylinder 61, and this end is closed. A first hollow shaft 72 is fixed to the other end of the extrusion roller 71. The second driving device 10 is connected to drive the first hollow shaft 72. The second driving device 10 is a driving motor, and the second driving device 10 and the first hollow shaft 72 are also driven by a synchronous toothed belt. The hollow shaft 72 is rotationally matched with the body structure 1, and the rotational matching is supported by bearings. The extrusion roller 71 is also rotationally matched with the slag discharge box 62, and this rotational matching is completed through the cooperation of bearings and shaft seals. The shaft seal is sealed inside the bearing. Through the support of double bearings, the extrusion roller 71 rotates more stably. A straight pipe 73 is inserted into the first hollow shaft 72, and the straight pipe 73 is rotationally matched with the first hollow shaft 72. A first support body 74 is fixed between the straight pipe 73 and the body joint 1. One end of the straight pipe 73 is inserted into the middle position of the extrusion roller 71, and the other end of the straight pipe 73 is connected to the oil supply pipe 13. A spiral blade 75 is fixed to the outer wall of the extrusion roller 71, and the spiral blade 75 fits the inner walls of the centrifugal cylinder 61 and the conical barrel 64. A plurality of conical oil nozzles 76 are annularly distributed on the outer wall of the extrusion roller 71.

[0072] In the above technical solution, through the rotation of the extrusion roller 71, the spiral blade 75 is driven to run at a speed lower than that of the centrifugal cylinder 61. Under the high-speed rotation of the centrifugal cylinder 61, solid-phase particles adhere to the inner walls of the centrifugal cylinder and the conical barrel. Through the rotation of the spiral blade 75, this part of the residue is pushed out, and the liquid edible oil is collected at the left end of the centrifugal cylinder 61 along the spiral channel of the spiral blade 75.

[0073] The rotation speed of the spiral blade 75 is set according to the fluidity of the edible oil. During the equipment debugging stage, keep the centrifugal cylinder 61 rotating at a high speed and adjust the rotation speed of the spiral blade 75 alone. When the rotation of the spiral blade 75 will push the edible oil out from the slag discharge box 62, it means that the rotation speed of the spiral blade 75 is too high and the rotation speed needs to be reduced.

[0074] Refer to Figure 2 As shown, a plurality of dispersion blades 771 are annularly arranged at the position of the extrusion roller 71 corresponding to the slag discharge box 62.

[0075] The setting of the dispersion blades 771 is to disperse the residue when the residue is pushed out in a lump, so as to facilitate the leakage of the residue from the slag discharge box 62.

[0076] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An edible oil centrifugal filtration device, comprising a body structure (1) and a control console (2) for adjusting the rotation speed. A bin cover (3) is installed at the upper end of the body structure (1), and the control console (2) is integrated on the bin cover (3). It is characterized in that: It further includes an oil inlet device (4), a oil extraction pump, a centrifugal component (6), an extrusion component (7), a storage barrel (8), a first driving device (9), a second driving device (10) and an oil outlet device (11). The extrusion component (7) is coaxially installed with the centrifugal component (6). Both the centrifugal component (6) and the extrusion component (7) are rotatably installed on the body structure (1). The first driving device (9) drives the centrifugal component (6) to rotate at a high speed, and the second driving device (10) drives the extrusion component (7) to rotate at a low speed. The waste residue generated by oil filtration is taken out of the centrifugal component (6) through the extrusion component (7). The filtered edible oil is extracted into the storage barrel (8) through the oil outlet device (11). The oil extraction pump is connected with an oil suction pipe (12) and an oil delivery pipe (13). The oil suction pipe (12) is connected to the oil inlet device (4), and the oil delivery pipe (13) cooperates with the extrusion component (7). The oil extraction pump, the first driving device (9), the second driving device (10) and the oil outlet device (11) are connected and controlled through the console (2).

2. The edible oil centrifugal filtration device according to claim 1, characterized in that: The oil inlet device (4) includes an oil inlet barrel (41), an inner pipe body (42), a flow dividing cover (43) and an electric heater (44). A conical gathering part (45) is formed by machining at the bottom of the oil inlet barrel (41). A connecting pipe (46) is welded at the central axis of the bottom of the gathering part (45). The inner pipe body (42) is threadedly connected to the central axis of the gathering part (45). Slots are machined on the outer wall of the inner pipe body (42), and a filter screen (47) is welded in the slots. The flow dividing cover (43) is frustum-shaped with a gradually decreasing diameter downward. A connecting part (48) is installed at the central axis of the bottom of the flow dividing cover (43). The connecting part (48) is inserted downward into the upper end of the inner pipe body (42) and fixed. The electric heater (44) is connected with an electric heating pipe (441). The edible oil flowing downward after being divided by the flow dividing cover (43) contacts the electric heating pipe (441). The oil suction pipe (12) is connected to the connecting pipe (46). A plurality of overflow holes (481) are arranged on the outer wall of the connecting part (48), and the overflow holes (481) are exposed above the inner pipe body (42).

3. The edible oil centrifugal filtration equipment according to claim 2, characterized in that: An oil inlet pipe (442) is installed at the central axis of the oil inlet barrel (41). A bracket (443) is fixed between the oil inlet pipe (442) and the oil inlet barrel (41). The oil inlet pipe (442) is coaxial with the flow dividing cover (43). A concave hole (444) is machined at the top of the flow dividing cover (43), and a filter cylinder (445) is fixed in the concave hole (444). The oil inlet pipe (442) delivers oil into the filter cylinder (445).

4. The edible oil centrifugal filtration equipment according to claim 1, characterized in that: The centrifugal assembly (6) includes a centrifugal cylinder (61) and a slag discharge box (62). One end of the centrifugal cylinder (61) is provided with a hollow shaft (63). A conical barrel (64) is fixedly installed at the end of the centrifugal cylinder (61) away from the hollow shaft (63). The diameter of the conical barrel (64) gradually decreases in the direction away from the centrifugal cylinder (61). The end of the conical barrel (64) is inserted into the slag discharge box (62). The extrusion assembly (7) passes through the slag discharge box (62) and then is inserted into the centrifugal cylinder (61). The slag discharge box (62) is fixed to the body structure (1). The slag discharge box (62) is rotationally matched with the conical barrel (64). The hollow shaft (63) is rotationally matched with the body structure (1). The oil outlet device (11) is installed via the hollow shaft (63). The first driving device (9) is connected to drive the hollow shaft (63). An inclined downward slag discharge channel (662) is welded to the outer side of the slag discharge box (62), and the slag discharge channel (662) penetrates to the outside of the body structure (1).

5. The edible oil centrifugal filtration device according to claim 4, characterized in that: A circular concave portion (661) is machined at a position on the outer wall of the centrifugal cylinder (61) away from the conical barrel (64). The edible oil separated under the centrifugal force of the centrifugal cylinder (61) gathers in the circular concave portion (661), and the oil outlet device (11) cooperates with the circular concave portion (661).

6. The edible oil centrifugal filtration equipment according to claim 5, wherein: The oil discharging device (11) includes an oil outlet pipe (111), a push rod (112), and a three-axis cylinder (113). The oil outlet pipe (111) is coaxially inserted into the hollow shaft (63). The oil outlet pipe (11) and the hollow shaft (63) are rotationally matched. A support body (114) is fixedly installed between the oil outlet pipe (11) and the body structure (1). A first connecting pipe (115) is arranged on the side of the oil outlet pipe (111). A first oil pump (116) is connected through the first connecting pipe (115). The first oil pump (116) is connected with a three-way valve (117). A first oil outlet pipe (118) and a return pipe (119) are connected through the three-way valve (117). A sub-control valve (120) is installed on the three-way valve (117). One sub-control valve (120) corresponds to the first oil outlet pipe (118), and the other sub-control valve (120) corresponds to the return pipe (119). The end of the return pipe (119) is inserted into the oil inlet device (4). The first oil outlet pipe (118) corresponds to the storage barrel (8). The three-axis cylinder (113) is fixedly installed through the support body (114). A connecting plate (121) is fixed to the outside of the push rod (112). The connecting plate (121) is fixed to the movable end of the three-axis cylinder (113). The push rod (112) is coaxial with the oil outlet pipe (111). The push rod (112) is inserted into the oil outlet pipe (111). The push rod (112) and the oil outlet pipe (111) are in clearance fit, and the edible oil passes through the clearance. The end of the oil outlet pipe (111) is threadedly connected with a pipe cap (122). A sealing ring (123) is clamped between the pipe cap (122) and the oil outlet pipe (111). The push rod (122) passes through the sealing ring (123) and forms a seal with the sealing ring (123).The outlet pipe (111) is inserted into the centrifugal cylinder (61) through the hollow shaft (63). A housing (124) is provided at this end. A housing cover (125) is detachably installed at the end of the housing (124). More than two sleeves (126) are annularly arranged on the outer wall of the housing (124). A movable pipe (127) is slidably installed in the sleeve (126). Both ends of the movable pipe (127) are spherically transitioned. Through holes (128) are provided on the spherical surfaces at both ends of the movable pipe (127). A limit cap (129) is installed at the pipe orifice of the sleeve (126). A limit ring (130) is fixedly arranged at the position where the movable pipe (127) is located inside the sleeve (126). A sealing ring (131) is clamped on the outer wall of the limit ring (130). A seal is formed between the sealing ring (131) and the inner wall of the sleeve (126). A spring (132) is sleeved on the movable pipe (127). The spring (132) acts between the limit cap (129) and the limit ring (130). Under the action of the spring (130), the movable pipe (127) slides towards the inside of the sleeve (126). The push rod (112) is inserted into the housing (124). A push block (133) is fixed at the end of the push rod (112) inserted into the housing (124). The push block (133) has an outer conical surface (134). The outer conical surface (134) acts on the spherical surface of the movable pipe (127). The outer end of the movable pipe (127) is located in the annular recess (661).; 7. The edible oil centrifugal filtration equipment according to claim 6, characterized in that: A brush seat (14) is fixedly installed on the outer wall of the movable pipe (127). Brush hairs (144) are annularly distributed on the outer end face of the brush seat (14). The spherical end of the movable pipe (127) is located at the center of multiple bundles of the brush hairs (144). After the extension of the movable pipe (127), the brush hairs (144) act on the inner wall of the circular concave portion (661).

8. The edible oil centrifugal filtration device according to claim 4, wherein: The extrusion assembly (7) includes an extrusion roller (71). One end of the extrusion roller (71) passes through the slag discharge box (62) and extends into the centrifugal cylinder (61), and this end is closed. A first hollow shaft (72) is fixed to the other end of the extrusion roller (71). The second driving device (10) is connected to drive the first hollow shaft (72). The hollow shaft (72) is rotationally matched with the body structure (1). The extrusion roller (71) is also rotationally matched with the slag discharge box (62). A straight pipe (73) is inserted into the first hollow shaft (72). The straight pipe (73) is rotationally matched with the first hollow shaft (72). A first support body (74) is fixed between the straight pipe (73) and the body joint (1). One end of the straight pipe (73) is inserted into the middle position of the extrusion roller (71). The other end of the straight pipe (73) is butted against the oil delivery pipe (13). A spiral sheet (75) is fixed to the outer wall of the extrusion roller (71). The spiral sheet (75) fits the inner walls of the centrifugal cylinder (61) and the conical barrel (64). Multiple conical oil outlet nozzles (76) are annularly distributed on the outer wall of the extrusion roller (71).

9. The edible oil centrifugal filtration device according to claim 8, wherein: A plurality of dispersing plates (771) are annularly arranged at a position of the extrusion roller (71) corresponding to the slag discharging box (62).

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