Multi-stage cadmium removal washing equipment for rice protein powder

Abstract

The invention belongs to the technical field of rice protein powder cadmium removal washing, and discloses rice protein powder multi-section cadmium removal washing equipment which comprises a mixing machine, two machine plug covers can be tightly clamped in the inner wall of the top end of the mixing machine, and a U-shaped rack is fixedly connected to the outer wall of the mixing machine; a discharging plug is connected to a machine body at the bottom end of the mixing machine in a penetrating and clamping mode, and a mixing cadmium removal part is arranged on the mixing machine. Under rotation of a rotating rod, automatic rotation is generated through friction force between a ring sleeve frame, a second elastic telescopic rod, a stirring wheel, a rubber convex ring and a rubber ring plate, and a double-layer stirring effect can be generated in the mixing machine through structures such as a rotating screening sleeve, the ring sleeve frame and the stirring wheel, so that mixing of hot water and rice protein powder is accelerated; and therefore, powder blocks formed by multiple times are naturally collected, ground and ground, mixing with water is facilitated, and the production and processing effect can be effectively improved through the double-layer stirring and mixing means.

Description

Technical Field

[0001] The invention belongs to the technical field of cadmium removal and water washing of rice protein powder, in particular to multi-stage cadmium removal and water washing equipment for rice protein powder. Background Art

[0002] Rice protein is a highly nutritious, hypoallergenic grain protein, making it a very suitable protein supplement for infants, the elderly, and patients. Generally, rice protein accounts for about 7% of rice, and is mainly composed of albumin, globulin, alcohol-soluble protein, and gluten. Due to the current environmental pollution in society, rice protein powder prepared from rice often contains cadmium that exceeds the standard, with cadmium content generally exceeding 1.0 mg / kg, which seriously endangers human health. Cadmium is a highly toxic heavy metal. Chronic poisoning manifests as headache, fatigue, mucosal atrophy, decreased lung respiratory function, kidney function decline, stomach pain, etc. Acute poisoning manifests as nausea, vomiting, headache, abdominal pain and other symptoms. Cadmium can also prevent it from entering the bones in the body, causing osteoporosis, brittleness and easy fracture, and causing bone pain. At present, in the multi-stage operation steps of washing and removing cadmium from rice protein powder, it is necessary to first mix the rice protein powder with hot water. When the powder is contacted and mixed with water, the powder will clump into pieces. The single stirring means in the prior art cannot flexibly and quickly eliminate the powder lumps and allow it to be quickly mixed with hot water. Summary of the Invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a multi-stage cadmium removal washing equipment for rice protein powder.

[0004] To achieve the above object, the present invention provides the following technical scheme: a rice protein powder multi-stage cadmium removal washing equipment, comprising a mixer, two machine plug covers can be tightly clamped in the top inner wall of the mixer, and a U-shaped frame is fixedly connected on the outer wall of the mixer, a discharging plug is connected through the bottom body of the mixer, the mixer is provided with a mixing and cadmium removal portion, the mixing and cadmium removal portion includes a motor fixedly connected on the top outer wall of the U-shaped frame, a rotating rod is fixedly connected on the rotating shaft of the motor, the rod body of the rotating rod and the plate body of the U-shaped frame are connected through rotation, the rod body of the rotating rod is also provided with two rotary stirring structures for accelerating powder block mixing, and the bottom rod body of the rotating rod is also provided with an intermittent discharging structure.

[0005] Preferably, each of the two rotating stirring structures includes an arc-shaped inclined plate movably sleeved on the rod body of the rotating rod, and an elastic telescopic rod is fixedly connected to the outer wall of one end of the rod body of the rotating rod, and a screening sleeve is fixedly connected to the rod body of the other end of the elastic telescopic rod, and a friction block is intermittently connected to the inner wall of the screening sleeve so as to fit and rotate.

[0006] Preferably, a ring frame is fixedly connected to the outer wall of one side of the friction block, and the ring frame and the outer wall of the bottom end of the arc inclined plate can be intermittently fitted and slidably connected, and the other side of the ring frame is fitted and slidably connected to the outer wall of the screening sleeve. An elastic telescopic rod 2 is fixedly connected to the outer wall of one end of the friction block, and a stirring wheel is fixedly connected to a section of the rod body of the elastic telescopic rod 2.

[0007] Preferably, a rubber convex ring is fixedly connected to the rod body on one side of the elastic telescopic rod close to the inner wall of the mixer, and a rubber ring plate and a metal ring plate are fixedly connected to the inner wall of the mixer. The rubber convex ring and the bottom outer wall of the rubber ring plate are frictionally rotated, and the rubber convex ring and the top outer wall of the metal ring plate are fitted and slidably connected.

[0008] Preferably, the intermittent discharging structure includes a turntable fixedly connected to the rod body at the bottom end of the rotating rod, a turn handle is fixedly connected to the outer wall of one side of the bottom end of the turntable, and a rectangular groove plate is slidably connected to the outer wall of the turn handle.

[0009] Preferably, a pull rod is fixedly connected to the outer wall of one end of the rectangular trough plate, a slide plate is slidably connected through the rod body of the pull rod, and the bottom end plate body of the slide plate is fixedly connected to the bottom inner wall of the mixer.

[0010] Preferably, a solution tank is provided at one end of the mixer near the bottom, a support plate is fixedly connected to the outer wall of the solution tank, and the other end of the support plate is fixedly connected to the outer wall of the mixer near the bottom.

[0011] Preferably, an L-shaped tube is fixedly connected to the bottom plate of the solution tank, and a one-way valve for controlling the one-way flow of liquid is fixedly connected to the tube body of the L-shaped tube.

[0012] Preferably, the other side of the L-shaped tube and the outer wall of the mixer near the bottom are fixedly connected through, and the rod body of the extension rod and the inner wall of the L-shaped tube can be intermittently fitted and slidably connected.

[0013] Preferably, a plurality of stirring rods are fixedly connected to the outer wall of the turntable in a surrounding manner, and a section of the ring frame and ring plate connected to the surface of the screening sleeve is specifically made of natural rubber material.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention enables the ring frame to passively rotate and contact the arc inclined plate, and then generate an overall offset according to the shape path of the arc inclined plate, thereby causing the elastic telescopic rod 1 to be forced to contract, thereby pulling the elastic telescopic rod 2 installed on the friction block to extend the rod body, until the elastic telescopic rod 1 is forced to retract to the bottom end, but the ring frame will continue to passively rotate according to the shape of the arc inclined plate, thereby causing the ring frame to be forced to slide on the surface of the screening sleeve, thereby driving the friction block to enter the screening sleeve, so that the screening sleeve can squeeze the mixed powder blocks that have entered at the beginning of rotation or in a stationary state; The present invention automatically rotates through the friction between the ring frame, the elastic telescopic rod 2, the stirring wheel, the rubber convex ring and the rubber ring plate under the rotation of the rotating rod. When the ring frame rotates through the arc inclined plate, the elastic telescopic rod 2 can automatically and elastically reset, so that the friction block is separated from the screening sleeve and the ring frame is synchronously driven to reset. The rotating screening sleeve, the ring frame, the stirring wheel and other structures can produce a double-layer stirring effect in the mixer, thereby accelerating the mixing between hot water and rice protein powder, which is beneficial for subsequent multiple water washing. The powder blocks formed are naturally collected, rolled and ground multiple times in the above-mentioned process, which is convenient for mixing with the water body and the double-layer stirring and mixing means, and can effectively increase the production and processing effect. The present invention can drive the rotating disk and the rotating handle to rotate simultaneously with the rotating rod, so that the rotating handle can slide back and forth in the rectangular slot plate, and drive the rectangular slot plate and the stretch rod to perform reciprocating translation under the limit guidance of the slide plate. Thus, the stretch rod can be intermittently blocked and contacted in the L-shaped tube, so that the food-grade acetic acid solution in the solution tank can be intermittently fed into the mixer. In addition, the rotation of the rotating rod can also drive a plurality of stirring rods to rotate together, so that the food-grade acetic acid solution fed into the mixer and the rice protein powder slurry are directly mixed and stirred, thereby converting the pH value of the protein suspension into acidic, so that the cadmium ions in the rice protein can be desorbed and dissolved from the bound state. The acidic condition can destroy the binding sites of cadmium with protein or starch, thereby improving the removal efficiency of cadmium. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the overall cross-sectional structure of the mixer of the present invention; Figure 3 This is a schematic diagram of the partial structure of the mixed cadmium removal unit of the present invention (part 1); Figure 4 This is a schematic diagram of the partial structure of the mixed cadmium removal unit of the present invention (part 2); Figure 5 This is a schematic diagram of the overall structure of the turntable of the present invention; Figure 6 It is a schematic diagram of the overall structure of the piston rod of the present invention.

[0016] In the picture: 1. Mixer; 11. Machine plug cover; 12. U-shaped frame; 13. Discharge plug; 2. Mixing and cadmium removal unit; 21. Motor; 22. Rotating rod; 23. Arc inclined plate; 24. Elastic telescopic rod 1; 25. Screening sleeve; 26. Friction block; 27. Ring frame; 28. Elastic telescopic rod 2; 29. Stirring wheel; 230. Rubber convex ring; 231. Rubber ring plate; 232. Metal ring plate; 233. Turntable; 234. Rotating handle; 235. Rectangular groove plate; 236. Extension rod; 237. Slide plate; 238. Solution tank; 239. Support plate; 240. L-shaped tube; 241. One-way valve; 242. Stirring rod. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] like Figures 1 to 6 As shown, the present invention provides a rice protein powder multi-stage cadmium removal washing equipment, comprising a mixer 1, two machine plug covers 11 can be tightly snapped into the top inner wall of the mixer 1, and a U-shaped frame 12 is fixedly connected to the outer wall of the mixer 1, a discharging plug 13 is penetrated and snapped into the bottom body of the mixer 1, the mixer 1 is provided with a mixing and cadmium removal part 2, the mixing and cadmium removal part 2 includes a motor 21 fixedly connected to the top outer wall of the U-shaped frame 12, a rotating rod 22 is fixedly connected to the rotating shaft of the motor 21, the rod body of the rotating rod 22 and the plate body of the U-shaped frame 12 are connected and rotated, the rod body of the rotating rod 22 is further provided with two rotating stirring structures for accelerating powder block mixing, and the bottom rod body of the rotating rod 22 is further provided with an intermittent discharging structure.

[0019] Adopt the above scheme: by opening the machine plug cover 11 on the mixer 1, rice protein powder and hot water can be put into the mixer 1 in batches, and the motor 21 on the U-shaped frame 12 is started to drive the rotating rod 22 to rotate. The rotating rotating rod 22 can synchronously drive the elastic telescopic rod 1 24, the screening sleeve 25, the friction block 26 and the ring sleeve frame 27 to rotate, so that the ring sleeve frame 27 can be passively rotated to contact the arc inclined plate 23, and then the overall offset is generated according to the morphological path of the arc inclined plate 23, so that the elastic telescopic rod 1 24 is stressed to produce the rod body contraction, thereby pulling the friction block 26 installed on The elastic telescopic rod 28 of the second rod is extended, and when the ring frame 27 is forced to slide on the surface of the screening sleeve 25, the friction block 26 is driven to enter the screening sleeve 25, so that the screening sleeve 25 can squeeze the mixed powder blocks that enter at the beginning of rotation or in a stationary state. At the same time, under the rotation of the rotating rod 22, the friction between the ring frame 27, the elastic telescopic rod 28, the stirring wheel 29, the rubber convex ring 230 and the rubber ring plate 231 will automatically rotate, which will produce a double-layer stirring effect in the mixer 1, which is conducive to subsequent multiple water washing; Meanwhile, when rotating rod 22 rotates, also can drive rotating disk 233 and rotating handle 234 to rotate, rotating handle 234 can be made to slide back and forth in rectangular groove plate 235 like this, make it drive rectangular groove plate 235 and stretching rod 236 under the limiting guide of slide plate 237, carry out reciprocating translation, realize the discontinuous blanking of the food-grade acetic acid solution in solution tank 238 and feed in mixer 1, and rotating rod 22 rotations also can drive multiple stirring rods 242 to rotate together, reach directly to the mixing and stirring between the food-grade acetic acid solution and the rice protein powder slurry of blanking in mixer 1, thereby protein suspension pH value is converted into acidity.

[0020] The two rotating stirring structures each include an arc inclined plate 23 movably sleeved on the rod body of the rotating rod 22. An elastic telescopic rod 24 is fixedly connected to the outer wall of one end of the rod body of the rotating rod 22. The other end of the elastic telescopic rod 24 is fixedly connected to the rod body of the screening sleeve 25. The inner wall of the screening sleeve 25 can be intermittently fitted and rotatably connected with a friction block 26. A ring frame 27 is fixedly connected to the outer wall of one side of the friction block 26. The ring frame 27 and the outer wall of the bottom end of the arc inclined plate 23 can be intermittently fitted and slidably connected. The other side of the ring frame 27 is fitted and slidably connected to the outer wall of the screening sleeve 25. The outer wall of one end of the friction block 26 is fixedly connected to an elastic telescopic rod 24. The retractable rod 28 and the elastic telescopic rod 28 are fixedly connected to a stirring wheel 29 on a section of the rod body. A rubber convex ring 230 is fixedly connected to the rod body on the side of the elastic telescopic rod 28 close to the inner wall of the mixer 1. A rubber ring plate 231 and a metal ring plate 232 are fixedly connected to the inner wall of the mixer 1. The rubber convex ring 230 and the outer wall of the bottom end of the rubber ring plate 231 are frictionally rotated, and the rubber convex ring 230 and the outer wall of the top end of the metal ring plate 232 are fitted and slidably connected. A plurality of stirring rods 242 are fixedly connected to the outer wall of the turntable 233 in a surrounding manner. A section of the ring frame 27 connected to the surface of the screening sleeve 25 is specifically made of natural rubber material.

[0021] The above scheme is adopted: the motor 21 on the U-shaped frame 12 is started to drive the rotating rod 22 to rotate, and the rotating rotating rod 22 will synchronously drive the elastic telescopic rod 1 24, the screening sleeve 25, the friction block 26 and the ring frame 27 to rotate, so that the ring frame 27 can contact the arc inclined plate 23 through passive rotation, and then produce an overall offset according to the shape path of the arc inclined plate 23, thereby the elastic telescopic rod 1 24 is forced to cause the rod body to contract, thereby pulling the elastic telescopic rod 2 28 installed on the friction block 26 to cause the rod body to extend, until the elastic telescopic rod 1 24 is forced to retract to the bottom end, but the ring frame 27 will continue to passively rotate according to the shape of the arc inclined plate 23, thereby causing the ring frame 27 to be forced to slide on the surface of the screening sleeve 25, thereby driving the friction Piece 26 enters in the screening sleeve 25, make screening sleeve 25 can be by at the beginning rotation or under the static state, just the mixed powder block entering is squeezed, and at the same time, can pass through ring sleeve frame 27 under the rotation of rotating rod 22 in conjunction with elastic telescopic rod 28, the friction force between stirring wheel 29 and rubber convex ring 230 and the rubber ring plate 231 and produce automatic rotation, the screening sleeve 25 of rotation and ring sleeve frame 27, structures such as stirring wheel 29 can produce double-deck stirring effect in mixer 1, realize thus accelerating the mixing between hot water and the rice protein powder, be beneficial to follow-up and carry out repeatedly washing, thus through above-mentioned in repeatedly the powder block formed is carried out naturally collecting rolling grinding, be convenient to and the mixing of water body and double-deck stirring and mixing means, can effectively increase production and processing effect.

[0022] The intermittent discharging structure includes a turntable 233 fixedly connected to the rod body at the bottom end of the rotating rod 22, a turntable 233 is fixedly connected to the outer wall of one side of the bottom end of the turntable 233, a rectangular groove plate 235 is slidably connected to the outer wall of the turntable 234, a stretch rod 236 is fixedly connected to the outer wall of one end of the rectangular groove plate 235, a slide plate 237 is slidably connected to the rod body of the stretch rod 236, the bottom plate body of the slide plate 237 is fixedly connected to the bottom inner wall of the mixer 1, and a solution tank 238 is provided at one end of the mixer 1 near the bottom. A support plate 239 is fixedly connected to the outer wall of the box 238, and the other end plate of the support plate 239 is fixedly connected to the outer wall of the mixer 1 near the bottom. An L-shaped tube 240 is fixedly connected to the bottom plate of the solution box 238, and a one-way valve 241 for controlling the one-way flow of liquid is fixedly connected to the tube body of the L-shaped tube 240. The other side tube body of the L-shaped tube 240 is fixedly connected to the outer wall of the mixer 1 near the bottom, and the rod body of the extension rod 236 and the inner wall of the L-shaped tube 240 can be intermittently fitted and slidably connected.

[0023] Adopt such scheme: when rotating rod 22 rotates, also can drive rotating disk 233 and rotating handle 234 to rotate, rotating handle 234 can be made to slide back and forth in rectangular fluted plate 235 like this, make it drive rectangular fluted plate 235 and stretching rod 236 under the limiting guide of slide plate 237, carry out reciprocating translation, just can make stretching rod 236 carry out intermittent blocking contact in L-shaped pipe 240 thus, realize the discontinuous blanking of the food-grade acetic acid solution in solution tank 238 and advance in mixing machine 1, and rotating rod 22 rotations also can drive a plurality of stirring rods 242 to rotate together, reach directly to the mixing and stirring between the food-grade acetic acid solution and the rice protein powder slurry of blanking in mixing machine 1, thereby protein suspension pH value is converted into acidity, can impel the cadmium ion in the rice protein to desorb and dissolve from bound state like this, acidic conditions can destroy the binding site of cadmium and protein or starch, improves the removal efficiency of cadmium.

[0024] It should be noted that the length of the arc inclined plate 23 needs to be adjusted accordingly during actual use, and the food-grade acetic acid solution in the solution tank 238 needs to be fully mixed with the rice protein powder and hot water before being put into the mixer 1. Only then can the appropriate amount of food-grade acetic acid solution be directly put into the solution tank 238, and then the amount of material is blanked to make it more fully mixed.

[0025] The working principle and use process of the present invention are as follows: by opening the machine plug cover 11 on the mixer 1, rice protein powder and hot water can be put into the mixer 1 in batches, and then the machine plug cover 11 is covered, and the motor 21 on the U-shaped frame 12 is started to drive the rotating rod 22 to rotate. The rotating rotating rod 22 will synchronously drive the elastic telescopic rod 1 24, the screening sleeve 25, the friction block 26 and the ring sleeve frame 27 to rotate, so that the ring sleeve frame 27 can contact the arc inclined plate 23 through passive rotation, and then generate an overall offset according to the shape path of the arc inclined plate 23, thereby the elastic telescopic rod 1 24 is forced to cause the rod body to contract, thereby pulling the elastic telescopic rod 2 28 installed on the friction block 26 to cause the rod body to extend, until the elastic telescopic rod 1 24 is forced to retract to the bottom end, but the ring sleeve frame 27 will continue to passively rotate according to the shape of the arc inclined plate 23, thereby causing the ring sleeve frame 27 to be forced to slide on the surface of the screening sleeve 25, thereby driving the friction block 26 Enter in the screening sleeve 25, make screening sleeve 25 can be by at the beginning rotation or under static state, the mixed powder block entering is squeezed, and at the same time, under the rotation of rotating rod 22, can pass through ring sleeve frame 27 and the friction force between elastic telescopic rod 28, stirring wheel 29 and rubber convex ring 230 and rubber ring plate 231 and produce automatic rotation, when waiting ring sleeve frame 27 rotation over arc inclined plate 23, elastic telescopic rod 28 just can automatically elastic reset, friction block 26 is broken away from in the screening sleeve 25, and synchronously drive ring sleeve frame 27 to reset, the screening sleeve 25 of rotation and ring sleeve frame 27, structures such as stirring wheel 29 can produce double-deck stirring effect in mixer 1, realize thus accelerating the mixing between hot water and the rice protein powder, be beneficial to follow-up and carry out repeatedly washing, thus through above-mentioned in repeatedly the powder block formed is naturally collected rolling grinding, be convenient to and the mixing of water body and double-deck stirring and mixing means, can effectively increase production and processing effect, Meanwhile, when rotating rod 22 rotates, also can drive rotating disk 233 and rotating handle 234 to rotate, rotating handle 234 can be made to slide back and forth in rectangular fluted plate 235 like this, make it drive rectangular fluted plate 235 and stretching rod 236 under the limiting guide of slide plate 237, carry out reciprocating translation, thus just can make stretching rod 236 carry out intermittent blocking contact in L-shaped pipe 240, realize the discontinuous blanking of the food-grade acetic acid solution in solution tank 238 and feed in mixer 1, and rotating rod 22 rotations also can drive multiple stirring rods 242 to rotate together, reach directly to the mixing and stirring between the food-grade acetic acid solution and the rice protein powder slurry of blanking in mixer 1, thereby protein suspension pH value is converted into acidity, can impel the cadmium ion in rice protein to desorb and dissolve from bound state like this, acidic conditions can destroy the binding site of cadmium and protein or starch, improves the removal efficiency of cadmium.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage cadmium removal washing device for rice protein powder, comprising a mixer (1), characterized in that: Two plug covers (11) can be tightly clamped in the inner wall of the top end of the mixer (1), and a U-shaped frame (12) is fixedly connected to the outer wall of the mixer (1). A discharge plug (13) is clamped through the bottom body of the mixer (1). The mixer (1) is provided with a mixing and cadmium removal part (2), and the mixing and cadmium removal part (2) includes a motor (21) fixedly connected to the outer wall of the top end of the U-shaped frame (12). A rotating rod (22) is fixedly connected to the rotating shaft of the motor (21). The rod body of the rotating rod (22) and the plate body of the U-shaped frame (12) are connected in a through-rotating manner. The rod body of the rotating rod (22) is also provided with two rotating stirring structures for accelerating the mixing of powder blocks, and the bottom end rod body of the rotating rod (22) is also provided with an intermittent discharge structure.

2. rice protein powder multi-stage cadmium removal washing equipment according to claim 1, is characterized in that: The two rotating stirring structures each include an arc inclined plate (23) movably sleeved on the rod body of the rotating rod (22); an elastic telescopic rod (24) is fixedly connected to the outer wall of one end of the rod body of the rotating rod (22); a screening sleeve (25) is fixedly connected to the rod body of the other end of the elastic telescopic rod (24); and a friction block (26) is intermittently connected to the inner wall of the screening sleeve (25) so as to be able to fit and rotate.

3. rice protein powder multi-stage cadmium removal washing equipment according to claim 2, is characterized in that: A ring frame (27) is fixedly connected to the outer wall of one side of the friction block (26), and the ring frame (27) and the outer wall of the bottom end of the arc inclined plate (23) can be intermittently fitted and slidably connected. The other side of the ring frame (27) is fitted and slidably connected to the outer wall of the screening sleeve (25). An elastic telescopic rod 2 (28) is fixedly connected to the outer wall of one end of the friction block (26), and a stirring wheel (29) is fixedly connected to a section of the rod body of the elastic telescopic rod 2 (28).

4. rice protein powder multi-stage cadmium removal washing equipment according to claim 3, is characterized in that: A rubber convex ring (230) is fixedly connected to the rod body of the second elastic telescopic rod (28) on one side close to the inner wall of the mixer (1), and a rubber ring plate (231) and a metal ring plate (232) are fixedly connected to the inner wall of the mixer (1). The outer wall of the bottom end of the rubber convex ring (230) and the rubber ring plate (231) are frictionally rotated, and the outer wall of the top end of the rubber convex ring (230) and the metal ring plate (232) are fitted and slidably connected.

5. rice protein powder multi-stage cadmium removal washing equipment according to claim 4, is characterized in that: The intermittent discharging structure includes a rotating disk (233) fixedly connected to the bottom end of the rotating rod (22); a rotating handle (234) fixedly connected to the outer wall of one side of the bottom end of the rotating disk (233); and a rectangular slot plate (235) slidably connected to the outer wall of the rotating handle (234).

6. rice protein powder multi-stage cadmium removal washing equipment according to claim 5, is characterized in that: A pull rod (236) is fixedly connected to the outer wall of one end of the rectangular slot plate (235), a slide plate (237) is slidably connected to the rod body of the pull rod (236), and the bottom end plate body of the slide plate (237) is fixedly connected to the bottom inner wall of the mixer (1).

7. rice protein powder multi-stage cadmium removal washing equipment according to claim 6, is characterized in that: A solution tank (238) is provided at one end of the mixer (1) near the bottom, a support plate (239) is fixedly connected to the outer wall of the solution tank (238), and the other end of the support plate (239) is fixedly connected to the outer wall of the mixer (1) near the bottom.

8. rice protein powder multi-stage cadmium removal washing equipment according to claim 7, is characterized in that: An L-shaped tube (240) is fixedly connected to the bottom plate of the solution tank (238), and a one-way valve (241) for controlling the one-way flow of liquid is fixedly connected to the tube body of the L-shaped tube (240).

9. rice protein powder multi-stage cadmium removal washing equipment according to claim 8, is characterized in that: The other side of the L-shaped tube (240) is fixedly connected to the outer wall of the mixer (1) at one end near the bottom, and the rod body of the extension rod (236) and the inner wall of the L-shaped tube (240) can be intermittently fitted and slidably connected.

10. Rice protein powder multi-stage cadmium removal washing equipment according to claim 9, is characterized in that: A plurality of stirring rods (242) are fixedly connected to the outer wall of the rotating disk (233) in a surrounding manner, and a ring plate of a ring frame (27) connected to the surface of the screening sleeve (25) is specifically made of natural rubber material.

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