Carclazyte decolorizing device for grease

Abstract

The invention relates to the technical field of grease processing equipment, in particular to a carclazyte decolorizing device for grease, which comprises a decolorizing tank, a stirring shaft and a transmission mechanism, the stirring shaft is arranged in the decolorizing tank, a plurality of stirring blades are arranged on the outer side of the stirring shaft, and the transmission mechanism is arranged in the decolorizing tank. The stirring blades can be connected with the stirring shaft in a manner of reciprocating along the radial direction of the stirring shaft, and the transmission mechanism is in transmission connection with the stirring shaft and the decolorizing tank at the same time so as to drive the decolorizing tank and the stirring shaft to perform differential rotation around the axes of the decolorizing tank and the stirring shaft. The method has the advantages that generation of carclazyte caking is reduced, the contact efficiency of carclazyte and pigments and impurities in grease is improved, the adsorption decolorization effect is enhanced, and the grease purification degree is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil processing equipment, and in particular to a bleaching clay decolorizing device for oil. Background Art

[0002] In the processing of oils and fats, in order to achieve the required color standard, various decolorization methods are usually required to remove the pigments in the oils and fats. Adsorption decolorization is widely used in the field of oil decolorization because of its simple operation and low cost. In the adsorption decolorization method, the pigments and impurities in the oils and fats are removed mainly by physical adsorption, so as to achieve the purpose of purification, which has important application value in actual production.

[0003] In the existing oil decolorization process, the adsorption decolorization method is mainly implemented by adding bleaching clay and stirring. Specifically, the oil and bleaching clay are poured into the decolorization tank together, and stirred by a stirring device to fully mix them. During the stirring process, the adsorption effect of the bleaching clay is used to remove the pigments and impurities in the oil, thereby achieving the purpose of decolorization. However, the existing stirring devices mostly use a single rotation method for stirring. The rotating stirring of the stirring paddle will cause the oil and adsorbent inside the tank to form a vortex. At this time, the rotation speed of the stirring paddle should not be too fast, otherwise the vortex formed by the high-speed rotation will cause most of the bleaching clay particles to be in the same motion trajectory, causing the bleaching clay to easily agglomerate. The generation of bleaching clay agglomerates has a great influence on the decolorization effect. If the bleaching clay is not fully mixed, the decolorization effect is low, and the amount of addition needs to be increased. At the same time, increasing the amount of addition will increase the generation of bleaching clay agglomerates, so it not only aggravates the blockage but also increases the cost of using bleaching clay. Summary of the invention

[0004] In order to reduce the generation of clay agglomeration, the present application provides a clay decolorization device for oil and fat.

[0005] The present application provides a white clay decolorization device for oil and fat using the following technical solution: A white clay decolorizing device for oil and fat comprises a decolorizing tank, a stirring shaft and a transmission mechanism, wherein the stirring shaft is arranged inside the decolorizing tank, a plurality of stirring blades are installed on the outer side of the stirring shaft, and the stirring blades are connected to the stirring shaft so as to be reciprocatingly movable along the radial direction of the stirring shaft, and the transmission mechanism is simultaneously connected to the stirring shaft and the decolorizing tank to drive the decolorizing tank and the stirring shaft to rotate differentially around their own axes.

[0006] By adopting the above technical solution, the stirring blade can be moved irregularly back and forth along the radial direction of the stirring shaft during the rotation of the stirring shaft, so that the stirring blade is fully in contact with the clay in the oil and changes its regular eddy current motion, avoiding the agglomeration of the clay, thereby improving the adsorption efficiency of the clay and the decolorization effect of the oil. The transmission mechanism drives the stirring shaft and the decolorization tank to rotate at a differential speed, further reducing the possibility of the clay sticking to the inner wall of the decolorization tank, enhancing the ability of the clay to adsorb pigments and impurities, and improving the purity of the oil.

[0007] Optionally, the transmission mechanism includes a housing, a sun gear, a center shaft, a plurality of planetary gears, a planetary carrier and an outer gear ring, the planetary carrier having a frame foot and a frame ring, the sun gear is connected to the center shaft and can rotate synchronously with the center shaft, the outer gear ring is connected to the inner wall of the housing, the planetary gear can rotate around its own axis and is rotatably connected to the frame foot of the planetary carrier through bearings, and the planetary gears are respectively meshed with the outer gear ring and the sun gear, the frame ring of the planetary carrier is fixedly connected to the top of the decolorization tank, the bottom end of the center shaft is fixedly connected to the stirring shaft, and the top end of the center shaft is provided with a transmission flange.

[0008] By adopting the above technical solution, the transmission mechanism combines the principle of planetary gear transmission to realize the differential rotation between the stirring shaft and the decolorization tank. The sun gear is used as the central driving part, which is connected to the stirring shaft through the central shaft to ensure the stable rotation of the stirring shaft. At the same time, under the joint action of the sun gear and the outer ring gear, the planetary gear rotates and revolves. The revolution of the planetary gear is transmitted to the decolorization tank through the planetary carrier, so that the decolorization tank can rotate differentially relative to the stirring shaft. The transmission flange at the top of the central shaft is convenient for connection with other driving equipment or transmission components.

[0009] Optionally, the clay decolorization device also includes a frame and a motor, one side of the shell is provided with a connecting flange for connecting to the frame, the motor is fixedly connected to the frame and the output end of the motor is provided with a coupling for connecting to the transmission flange.

[0010] By adopting the above technical solution, the frame serves as the supporting structure of the entire device, is fixed on the ground, and is tightly connected to the side wall of the shell through the connecting flange, which ensures the stability of the transmission mechanism during operation on the one hand, and also keeps the inner gear ring connected to the shell stationary during operation on the other hand. The motor serves as a power source, and is connected to the transmission flange in the transmission mechanism through the coupling arranged at its output end, thereby realizing the transmission of the motor power.

[0011] Optionally, a plurality of auxiliary wheels are provided at the bottom of the decolorizing tank, and the auxiliary wheels are arranged at equal intervals around the axis of the decolorizing tank.

[0012] By adopting the above technical solution, the auxiliary wheels can not only support the weight of the decolorizing tank, but also provide necessary guidance and balance when the decolorizing tank rotates. The auxiliary wheels are arranged at equal intervals around the axis of the decolorizing tank, ensuring the uniformity and stability of the decolorizing tank during rotation, and avoiding vibration and noise problems caused by the shift of the center of gravity.

[0013] Optionally, the stirring shaft includes a plurality of guide parts, the number of the guide parts is the same as the number of the stirring blades, the guide parts include a plurality of first sliding rods parallel to each other, one end of the first sliding rod is fixedly connected to the stirring shaft, the other end of the first sliding rod is provided with a first limit stop ring, the first sliding rod is provided with a second limit stop ring at a position close to the first limit stop ring, the stirring blade is slidably connected to the first sliding rod, and is located between the first limit stop ring and the second limit stop ring.

[0014] By adopting the above technical solution, the stirring blade can slide radially along the stirring shaft on the first sliding rod of the guide part, and be limited between the first limit ring and the second limit ring, thereby avoiding excessive deviation of the stirring blade during the stirring process, enhancing the decolorization effect, and reducing the occurrence of white clay agglomeration.

[0015] Optionally, the guide portion also includes a second slide rod and a spring, the second slide rod is parallel to the first slide rod, one end of the second slide rod is fixedly connected to the stirring shaft, the second slide rod is slidably connected to the stirring blade, and the spring is sleeved on the second slide rod, one end of the spring is connected to the stirring shaft, and the other end is connected to the stirring blade.

[0016] By adopting the above technical solution, the second slide rod and the first slide rod jointly provide guidance for the stirring blades. At the same time, the setting of the spring can provide a reset effect for the stirring blades, so that the stirring blades can achieve elastic movement along the radial direction of the stirring shaft during the stirring process, so that the stirring blades can move more flexibly in the mixture of oil and clay, and avoid the stirring blades from being close to the first limit ring or the second limit ring for a long time without radial movement.

[0017] Optionally, the original length of the spring is greater than the distance between the second limit stop ring and the stirring shaft, and less than the distance between the first limit stop ring and the stirring shaft.

[0018] By adopting the above technical solution, the stirring blade can effectively reciprocate within the radial range of the stirring shaft, avoiding the stirring blade from being close to the first limit ring or the second limit ring for a long time without radial movement, reducing the formation of white clay agglomeration during the stirring process, thereby improving the mixing uniformity and decolorization effect of white clay and oil.

[0019] Optionally, the stirring shaft includes a first connection part, a second connection part and a third connection part, and the first connection part, the second connection part and the third connection part are arranged in sequence along the vertical direction, and the multiple first sliding rods in the guide part are at least partially connected to the first connection part and at least partially connected to the third connection part, the second sliding rod is connected to the second connection part, and the diameter of the first connection part is the same as that of the third connection part and is larger than the diameter of the second connection part.

[0020] By adopting the above technical solution, the first connecting part and the third connecting part with larger diameters are convenient for matching with the multiple first sliding rods of the guide part, and the second connecting part with smaller diameter can effectively reduce the agglomeration of white clay on the stirring shaft.

[0021] Optionally, the stirring blade is plate-shaped and is provided with a plurality of stirring holes.

[0022] By adopting the above technical solution, the multiple stirring holes on the stirring blade can effectively enhance the mixing effect between the white clay and the oil, improve the decolorization efficiency, and at the same time reduce the amount of white clay used and reduce costs.

[0023] Optionally, an oil inlet pipe and a soil inlet pipe are fixedly installed on the outside of the decolorization tank, and the soil inlet pipe is located directly above the oil inlet pipe.

[0024] By adopting the above technical solution, the decolorization tank is stationary during the filling process. In order to avoid the white clay settling at the bottom of the decolorization tank during the filling process, the oil can enter the decolorization tank from the bottom of the decolorization tank, and the white clay can enter the decolorization tank from above the oil inlet.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The design of the stirring shaft and the stirring blades moving back and forth along the radial direction of the stirring shaft changes the movement trajectory of the clay, avoids the agglomeration of the clay, and improves the contact efficiency between the clay and the pigments and impurities in the oil; 2. The design of differential rotation of the decolorization tank and the stirring shaft allows the clay and grease to be mixed more evenly, enhancing the adsorption and decolorization effect and improving the degree of grease purification; 3. The stirring holes on the stirring blades can promote the flow of oil while the stirring blades move radially back and forth, thereby increasing the adsorption efficiency of the clay and impurities in the oil and further improving the decolorization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a white clay decolorization device for oil and fat provided in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the internal structure of a white clay decolorization device for oil and fat provided in an embodiment of the present application.

[0028] Explanation of the reference numerals: 1-decolorizing tank; 101-oil inlet pipeline; 102-soil inlet pipeline; 2-agitation shaft; 201-first slide bar; 2011-first limit retaining ring; 2012-second limit retaining ring; 202-second slide bar; 2021-third limit retaining ring; 203-spring; 204-first connecting part; 205-second connecting part; 206-third connecting part; 3-agitation blade; 301-agitation hole; 4-housing; 5-sun gear; 6-center shaft; 7-planetary gear; 8-planet carrier; 801-frame foot; 802-frame ring; 9-outer gear ring; 10-transmission flange; 11-connecting flange; 12-auxiliary wheel. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] The embodiment of the present application discloses a white clay decolorizing device for oil and fat.

[0031] like Figure 1 and Figure 2 As shown, the bleaching clay decolorizing device for oils and fats comprises a bleaching tank 1, a stirring shaft 2 and a transmission mechanism, wherein the stirring shaft 2 is arranged inside the bleaching tank 1, and a plurality of stirring blades 3 are installed on the outer side of the stirring shaft 2, and the stirring blades 3 are connected to the stirring shaft 2 so as to be reciprocable along the radial direction of the stirring shaft 2, and the transmission mechanism is simultaneously connected to the stirring shaft 2 and the bleaching tank 1 to drive the bleaching tank 1 and the stirring shaft 2 to rotate differentially around their own axes, thereby achieving the purpose of changing the movement trajectory of the bleaching clay, avoiding agglomeration, and improving the bleaching effect.

[0032] like Figure 1 and Figure 2 As shown, specifically, the transmission mechanism includes a housing 4, a sun gear 5, a central shaft 6, a plurality of planetary gears 7, a planetary carrier 8 and an outer gear ring 9, the planetary carrier 8 has a frame foot 801 and a frame ring 802, the sun gear 5 is connected to the central shaft 6 and can rotate synchronously with the central shaft 6, the outer gear ring 9 is connected to the inner wall of the housing 4, the planetary gear 7 can rotate around its own axis and is rotatably connected to the frame foot 801 of the planetary carrier 8 through a bearing, and the planetary gear 7 is respectively meshed with the outer gear ring 9 and the sun gear 5, the frame ring 802 of the planetary carrier 8 is fixedly connected to the top of the decolorization tank 1, the bottom end of the central shaft 6 is fixedly connected to the stirring shaft 2, and the top of the central shaft 6 is provided with a transmission flange 10.

[0033] The transmission mechanism combines the principle of planetary gear transmission to realize differential rotation between the stirring shaft 2 and the decolorizing tank 1. The sun gear 5 is used as the central driving member and is connected to the stirring shaft 2 through the central shaft 6 to ensure the stable rotation of the stirring shaft 2. At the same time, under the joint action of the sun gear 5 and the outer gear ring 9, the planetary gear 7 both rotates and revolves. The revolution of the planetary gear 7 is transmitted to the decolorizing tank 1 through the planet carrier 8, so that the decolorizing tank 1 can rotate differentially relative to the stirring shaft 2. The transmission flange 10 at the top of the central shaft 6 is convenient for connection with other driving devices or transmission components.

[0034] In the planetary gear transmission of the transmission mechanism, in order to transmit power to the central shaft 6 and to limit the freedom of the outer gear ring 9, the clay decolorization device also includes a frame and a motor. One side of the shell 4 is provided with a connecting flange 11 for connecting to the frame. The motor is fixedly connected to the frame and the output end of the motor is provided with a coupling for connecting to the transmission flange 10 (the frame, motor and coupling are not shown in the figure).

[0035] The frame, as the supporting structure of the entire device, is fixed on the ground and is tightly connected to the side wall of the housing 4 through the connecting flange 11. On the one hand, it ensures the stability of the transmission mechanism during operation, and on the other hand, it also keeps the inner gear ring connected to the housing 4 stationary during operation. The motor, as the power source, is connected to the transmission flange 10 in the transmission mechanism through the coupling provided at its output end, realizing the transmission of the motor power.

[0036] When the motor is started, the motor drives the central shaft 6 to rotate through the coupling. The central shaft 6 drives the sun gear 5 to rotate, and the sun gear 5 drives the planetary gear 7 to rotate around its own axis on the one hand, and drives the planetary gear 7 to revolve around the axis of the central shaft 6 on the other hand through the engagement with the planetary gear 7. While the planetary gear 7 revolves, the planetary gear 7 drives the planetary carrier 8 to rotate around the axis of the central shaft 6, thereby driving the decolorizing tank 1 to rotate. The central shaft 6 is connected to the stirring shaft 2, and the central shaft 6 drives the stirring shaft 2 to rotate together while rotating. By adjusting the gear ratio between the sun gear 5, the planetary gear 7 and the outer gear ring 9, the differential rotation of the decolorizing tank 1 and the stirring shaft 2 is achieved.

[0037] like Figure 1 and Figure 2 As shown, a plurality of auxiliary wheels 12 may be provided at the bottom of the decolorizing tank 1, and the auxiliary wheels 12 are arranged at equal intervals around the axis of the decolorizing tank 1. The auxiliary wheels 12 can not only support the weight of the decolorizing tank 1, but also provide necessary guidance and balancing when the decolorizing tank 1 rotates. The auxiliary wheels 12 are arranged at equal intervals around the axis of the decolorizing tank 1, ensuring the uniformity and stability of the decolorizing tank 1 during the rotation process, and avoiding vibration and noise problems caused by the shift of the center of gravity.

[0038] like Figure 2As shown, the stirring shaft 2 includes a plurality of guide parts, the number of which is the same as the number of the stirring blades 3, and the guide parts include a plurality of mutually parallel first slide bars 201, a second slide bar 202 and a spring 203, one end of the first slide bar 201 is fixedly connected to the stirring shaft 2, the other end of the first slide bar 201 is provided with a first limit retaining ring 2011, and the first slide bar 201 is provided with a second limit retaining ring 2012 at a position close to the first limit retaining ring 2011, and the stirring blade 3 is slidably connected to the first slide bar 201 and is located between the first limit retaining ring 2011 and the second limit retaining ring 2012. The second slide bar 202 is parallel to the first slide bar 201, one end of the second slide bar 202 is also fixedly connected to the stirring shaft 2, the second slide bar 202 is slidably connected to the stirring blade 3, and the spring 203 is sleeved on the second slide bar 202, one end of the spring 203 is connected to the stirring shaft 2, and the other end is connected to the stirring blade 3. In order to perform auxiliary limiting, a third limiting ring 2021 may also be provided at the end of the second sliding rod 202 away from the stirring shaft 2 .

[0039] The stirring blade 3 can slide along the radial direction of the stirring shaft 2 on the first slide bar 201 of the guide part, and is limited between the first limit retaining ring 2011 and the second limit retaining ring 2012. On the one hand, it prevents the stirring blade 3 from excessively deviating from the inner wall of the decolorizing tank 1 during the stirring process, resulting in a collision with the decolorizing tank 1. On the other hand, it prevents the stirring blade 3 from excessively moving away from the inner wall of the decolorizing tank 1 during the stirring process, resulting in the grease on the inner wall of the decolorizing tank 1 not being fully stirred. The spring 203 enables the stirring blade 3 to effectively reciprocate between the first limit retaining ring 2011 and the second limit retaining ring 2012, preventing the stirring blade 3 from being closely attached to the first limit retaining ring 2011 or the second limit retaining ring 2012 for a long time without radial movement, reducing the generation of clay agglomeration during the stirring process, thereby improving the mixing uniformity and decolorization effect of clay and grease.

[0040] like Figure 2 As shown, in order to reduce the agglomeration of clay on the stirring shaft 2, the stirring shaft 2 includes a first connecting part 204, a second connecting part 205 and a third connecting part 206, and the first connecting part 204, the second connecting part 205 and the third connecting part 206 are arranged in sequence along the vertical direction, and the multiple first sliding rods 201 in the guide part are at least partially connected to the first connecting part 204, at least partially connected to the third connecting part 206, the second sliding rod 202 is connected to the second connecting part 205, and the diameters of the first connecting part 204 and the third connecting part 206 are the same and larger than the diameter of the second connecting part 205.

[0041] In this embodiment, the number of the first slide bars 201 is four, of which two first slide bars 201 are connected to the first connection part 204, and the other two first slide bars 201 are connected to the second connection part 205, so as to guide the top and bottom of the stirring blade 3 and increase the stability of the stirring blade 3 during the radial reciprocating movement. The first connection part 204 and the third connection part 206 with larger diameters are convenient for matching the four first slide bars 201 of the guide part, and the second connection part 205 with a smaller diameter can reduce the contact area with the grease mixed with clay, thereby effectively reducing the agglomeration of clay on the stirring shaft 2.

[0042] like Figure 2 As shown, the stirring blade 3 is plate-shaped and is provided with a plurality of stirring holes 301. The plurality of stirring holes 301 on the stirring blade 3 can effectively enhance the mixing effect between the clay and the oil, improve the decolorization efficiency, and reduce the amount of clay used and the cost.

[0043] like Figure 1 As shown, in order to fill the decolorizing tank 1, an oil inlet pipe 101 and a soil inlet pipe 102 are fixedly installed on the outside of the decolorizing tank 1, and the soil inlet pipe 102 is located directly above the oil inlet pipe 101. Since the decolorizing tank 1 is stationary during the filling process, in order to prevent the white clay from settling at the bottom of the decolorizing tank 1 during the filling process, the grease can enter the decolorizing tank 1 from the bottom of the decolorizing tank 1, and the white clay can enter the decolorizing tank 1 from above the grease inlet. Thus, the grease is used to reduce the speed of white clay precipitation.

[0044] It is worth noting that the decolorization tank 1 needs to be continuously heated during the decolorization process. There are many ways to heat it, and this application does not limit this.

[0045] The implementation principle of the clay decolorization device for grease in the embodiment of the present application is as follows: when the motor is started, its power is transmitted to the central shaft 6 through the coupling, thereby driving the sun gear 5 to rotate. The meshing action of the sun gear 5 and the planetary gear 7 enables the planetary gear 7 to revolve around the central shaft 6 while rotating on itself, and this revolution is transmitted to the decolorization tank 1 through the planetary carrier 8, thereby realizing the rotation of the decolorization tank 1. At the same time, the central shaft 6 is connected to the stirring shaft 2, so that the stirring shaft 2 also rotates therewith, but there is a difference in the rotation speeds of the two. This differential rotation helps to fully mix the grease and the clay in the decolorization tank 1.

[0046] The combination of the first slide bar 201, the second slide bar 202 and the spring 203 on the guide part of the stirring shaft 2 gives the stirring blade 3 a certain degree of freedom, so that it can reciprocate along the radial direction of the stirring shaft 2 during the stirring process. This avoids the contact between the stirring blade 3 and the inner wall of the decolorizing tank 1, reduces collision and wear, and also prevents the stirring blade 3 from being away from the inner wall. The stirring blind area is ensured, the uniformity of the mixture of grease and clay is ensured, and the risk of clay agglomeration is effectively reduced.

[0047] In addition, the stirring hole 301 on the stirring blade 3 further enhances the stirring effect. The stirring hole 301 not only increases the contact area between the stirring blade 3 and the oil and clay, but also promotes the flow of the oil, helps to evenly disperse the clay into the oil, and improves the decolorization efficiency. At the same time, by adjusting the size and distribution of the stirring holes 301, targeted stirring treatment of oils of different types and states can also be achieved.

[0048] In terms of filler, the soil inlet pipe 102 is arranged directly above the oil inlet pipe 101, and grease is used to slow down the sedimentation speed of the clay, which effectively avoids the accumulation of clay at the bottom of the decolorization tank 1 and ensures the smooth progress of the decolorization process.

[0049] Finally, the present application does not impose any specific restrictions on the heating method of the decolorizing tank 1. According to actual needs and site conditions, various methods such as electric heating or hot oil circulation heating can be selected. Regardless of the heating method used, the temperature in the decolorizing tank 1 should be uniform and controllable to ensure the decolorizing effect and product quality.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A white clay decolorizing device for oils and fats, characterized in that: include: A decolorizing tank (1), a stirring shaft (2) and a transmission mechanism, wherein the stirring shaft (2) is arranged inside the decolorizing tank (1), a plurality of stirring blades (3) are installed on the outer side of the stirring shaft (2), and the stirring blades (3) are connected to the stirring shaft (2) so as to be reciprocating along the radial direction of the stirring shaft (2), and the transmission mechanism is simultaneously connected to the stirring shaft (2) and the decolorizing tank (1) so as to drive the decolorizing tank (1) and the stirring shaft (2) to rotate differentially around their own axes.

2. The white clay decolorizing device for oils and fats according to claim 1, characterized in that: The transmission mechanism comprises a housing (4), a sun gear (5), a central shaft (6), a plurality of planetary gears (7), a planetary carrier (8) and an outer gear ring (9); the planetary carrier (8) has a frame foot (801) and a frame ring (802); the sun gear (5) is connected to the central shaft (6) and can rotate synchronously with the central shaft (6); the outer gear ring (9) is connected to the inner wall of the housing (4); the planetary gear (7) can rotate around its own axis and is rotatably connected to the frame foot (801) of the planetary carrier (8) through a bearing; the planetary gear (7) is respectively meshed with the outer gear ring (9) and the sun gear (5); the frame ring (802) of the planetary carrier (8) is fixedly connected to the top of the decolorizing tank (1); the bottom end of the central shaft (6) is fixedly connected to the stirring shaft (2); and the top end of the central shaft (6) is provided with a transmission flange (10).

3. The white clay decolorizing device for oils and fats according to claim 2, characterized in that: The clay decolorizing device also includes a frame and a motor, one side of the housing (4) is provided with a connecting flange (11) for connecting to the frame, the motor is fixedly connected to the frame and the output end of the motor is provided with a coupling for connecting to the transmission flange (10).

4. The white clay decolorizing device for oils and fats according to claim 3, characterized in that: A plurality of auxiliary wheels (12) are provided at the bottom of the decolorizing tank (1), and the auxiliary wheels (12) are arranged at equal intervals around the axis of the decolorizing tank (1).

5. The white clay decolorizing device for oils and fats according to claim 1, characterized in that: The stirring shaft (2) comprises a plurality of guide parts, the number of the guide parts is the same as the number of the stirring blades (3), the guide parts comprise a plurality of mutually parallel first slide bars (201), one end of the first slide bar (201) is fixedly connected to the stirring shaft (2), the other end of the first slide bar (201) is provided with a first limit stop ring (2011), the first slide bar (201) is provided with a second limit stop ring (2012) at a position close to the first limit stop ring (2011), and the stirring blade (3) is slidably connected to the first slide bar (201) and is located between the first limit stop ring (2011) and the second limit stop ring (2012).

6. The white clay decolorizing device for oils and fats according to claim 5, characterized in that: The guide portion further comprises a second slide bar (202) and a spring (203), wherein the second slide bar (202) is parallel to the first slide bar (201), one end of the second slide bar (202) is fixedly connected to the stirring shaft (2), the second slide bar (202) is slidably connected to the stirring blade (3), and the spring (203) is sleeved on the second slide bar (202), one end of the spring (203) is connected to the stirring shaft (2), and the other end is connected to the stirring blade (3).

7. The white clay decolorizing device for oils and fats according to claim 6, characterized in that: The original length of the spring (203) is greater than the distance between the second limit stop ring (2012) and the stirring shaft (2), and less than the distance between the first limit stop ring (2011) and the stirring shaft (2).

8. The white clay decolorizing device for oils and fats according to claim 6, characterized in that: The stirring shaft (2) comprises a first connecting portion (204), a second connecting portion (205) and a third connecting portion (206); the first connecting portion (204), the second connecting portion (205) and the third connecting portion (206) are arranged in sequence along the vertical direction; a plurality of first sliding rods (201) in the guide portion are at least partially connected to the first connecting portion (204) and at least partially connected to the third connecting portion (206); the second sliding rod (202) is connected to the second connecting portion (205); the diameters of the first connecting portion (204) and the third connecting portion (206) are the same and larger than the diameter of the second connecting portion (205).

9. The white clay decolorizing device for oils and fats according to claim 1, characterized in that: The stirring blade (3) is plate-shaped and is provided with a plurality of stirring holes (301).

10. The white clay decolorizing device for oils and fats according to claim 1, characterized in that: An oil inlet pipeline (101) and a soil inlet pipeline (102) are fixedly installed on the outside of the decolorizing tank (1), and the soil inlet pipeline (102) is located directly above the oil inlet pipeline (101).

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