Mixing equipment for producing and processing crayfish feed

Abstract

The invention belongs to the technical field of feed production equipment, and particularly relates to mixing equipment for producing and processing crayfish feed. The mixing equipment structurally comprises a stirring shaft, stirring blades and a driving motor, and further comprises an upper opening shell unit for mounting the stirring shaft, and a lifting type scrubbing frame body unit which is arranged on the stirring shaft in a sleeving manner and is used for cleaning the inner side surface of the upper opening shell unit, the clamping block is arranged on the stirring shaft and is used for being in transmission connection with the driving motor and the lifting type scrubbing frame body unit in a manner of clamping and fixing the lifting type scrubbing frame body unit; and the grooved cover plate unit is arranged on the upper opening shell unit, is clamped with the lifting type scrubbing frame body unit and is used for fixing the clamping block and the lifting type scrubbing frame body unit in a manner of upwards lifting the lifting type scrubbing frame body unit.

Description

Technical Field

[0001] The present application belongs to the technical field of feed production equipment, and in particular, relates to a mixing device for producing and processing crayfish feed. Background Art

[0002] The raw materials of crayfish feed mainly include: fish meal, soybean meal, blood meal, meat and bone meal, earthworm meal, corn meal, wheat flour, bran, and fish oil. The production process of crayfish feed mainly includes the following steps in sequence: raw material screening and crushing, mixing, granulation, and cooling and drying. Among them, the above-mentioned mixing equipment is used in the mixing step.

[0003] On the other hand, the common crayfish feed mixing equipment currently available mainly includes: an outer shell, a rotating stirring structure, and an inner wall brushing structure. Among them, the rotating stirring structure is the core component, and the inner wall brushing structure is used to prevent the residual material from sticking to the inner wall of the outer shell for a long time and accumulating in large quantities.

[0004] Generally, when the above-mentioned special mixing equipment is in normal use, the rotating stirring structure is turned on and the inner wall brushing structure is turned off, and the latter is turned on when the equipment is shut down to achieve a regular cleaning effect.

[0005] For example, the Chinese utility model patent with authorization announcement number CN220990648U and authorization announcement date 2024.05.24 discloses a mixing device for the production and processing of crayfish feed, whose structural components mainly include: a tank body, a limit block, a limit assembly, a cross plate, a cover shell, a mixer, an arc shell, a magnet, a support plate, a limit sleeve, a brush, and a feed pipe.

[0006] The main advantages of the mixing device in this utility model patent are that the mixer can drive the brush to rotate and automatically clean the inner wall of the tank, which is conducive to the operator to clean the inner wall of the tank more conveniently.

[0007] However, in actual use, the mixing device still has at least the following problems: the inner wall cleaning effect is not safe enough, specifically: The cleaning structure composed of the limit sleeve, brush and support plate is prone to accidents in which the support plate touches or hits the rotating arc shell when the device is operating normally or on standby. As a result, the limit sleeve is driven uncontrollably and irregularly, which can easily damage the stirring blade and the tank body. This is very dangerous and impractical. Summary of the invention

[0008] The present application provides a mixing device for the production and processing of crayfish feed, and the technical problem to be solved is: how to make the inner wall cleaning structure of the mixing device sufficiently safe, efficient and practical when in use.

[0009] The technical solution adopted by the present application to solve the above-mentioned problems is: a mixing equipment for the production and processing of crayfish feed, the structure of which includes a stirring shaft, stirring blades, and a driving motor, and also includes an upper opening shell unit for installing the stirring shaft, a lifting and scrubbing frame unit sleeved on the stirring shaft and used for cleaning the inner side of the upper opening shell unit, a clamping block arranged on the stirring shaft and fixing the lifting and scrubbing frame unit by clamping to transmit and connect the driving motor and the lifting and scrubbing frame unit, and a grooved cover plate unit arranged on the upper opening shell unit and clamping the lifting and scrubbing frame unit and fixing the clamping block and the lifting and scrubbing frame unit by pulling the lifting and scrubbing frame unit upwards.

[0010] A further preferred technical solution is that the upper opening housing unit includes a circular cylinder and a bottom plate with holes which is arranged on the circular cylinder, located above the driving motor and used for plugging the stirring shaft.

[0011] A further preferred technical solution is that the lifting and cleaning frame unit includes a radial plate, a locking transmission hole arranged on the radial plate, which is sleeved on the stirring shaft and is used to clamp the locking block, two vertical plates respectively arranged at the two end positions of the radial plate, bristles arranged on the radial plate and the vertical plates and used to brush the inner annular surface of the circular cylinder and the upper surface of the perforated bottom plate, and a lifting limit ring arranged on the two vertical plates and locking the grooved cover plate unit.

[0012] A further preferred technical solution is that the engaging block is an inverted truncated cone-shaped block, and a mounting hole for connecting the stirring shaft is provided on the engaging block.

[0013] A further preferred technical solution is that the grooved cover plate unit includes a cover plate arranged on the upper end surface of the circular cylinder, an annular hole arranged on the lower surface of the cover plate and used to radially engage the vertical plate, and an annular groove arranged on the inner side of the annular hole and having a radial width greater than that of the annular hole and used to pull and press down the lifting limit ring.

[0014] A further preferred technical solution is that the upper opening shell unit also includes a protruding plate arranged on the outer ring surface of the circular cylinder, a vertical stud arranged on the protruding plate and plugged into the cover plate, and a nut arranged on the vertical stud and used to lift the cover plate; the grooved cover plate unit also includes a limiting hole arranged on the cover plate and used to pass the vertical stud.

[0015] A further preferred technical solution is that: the vertical dimension of the annular groove is greater than the thickness of the limiting ring for pulling; the grooved cover plate unit also includes balls arranged on the annular surface of the annular hole and / or the annular groove.

[0016] A further preferred technical solution is that the grooved cover plate unit further includes a water supply hole which is arranged on the upper surface of the cover plate, connected to the annular groove and used for spraying water onto the bristles.

[0017] A further preferred technical solution is that: the shape of the water supply hole is fan-shaped; the upper opening shell unit also includes a discharge port arranged on the perforated bottom plate and circumferentially aligned with the water supply hole; the lifting and cleaning frame unit also includes a radial plate annular position indicator groove arranged on the upper surface of the lifting limit ring and circumferentially aligned with the radial plate, and used to circumferentially stagger the radial plate and the discharge port.

[0018] A further preferred technical solution is that the method for using the radial plate annular position indicating groove is as follows: when the radial plate annular position indicating groove is exposed at the water filling hole, the radial plate annular position indicating groove is first plugged into the radial plate annular position indicating groove using a lever, and then the lifting and lowering brush frame unit is rotated by the lever until the radial plate annular position indicating groove is circumferentially offset from the water filling hole.

[0019] The beneficial effects of this application include at least the following four points.

[0020] First, when the mixing equipment is performing normal stirring and mixing operations, the lifting scrubbing frame unit is separated from the engaging block, and the former is fixed in any vertical plane, so it will neither hit the stirring blade nor damage the upper opening shell unit, thereby ensuring the safety of the inner wall scrubbing function.

[0021] Second, during the use of the mixing equipment, the grooved cover unit can connect the locking block and the lifting brush frame unit, so that the driving motor can rotate the lifting brush frame unit to ensure the effectiveness of the inner wall brushing function. At this time, the lifting brush frame unit is also vertically fixed and safe enough.

[0022] Third, the operation of establishing and releasing the connection relationship between the lifting type scrubbing frame unit and the engaging block by the grooved cover unit is simple, convenient, efficient and fast.

[0023] Fourthly, the lifting type scrubbing frame unit itself has an efficient and water-saving rotary scrubbing function, which greatly improves the practicality of the inner wall cleaning function of the mixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application.

[0025] Figure 2It is a schematic structural diagram of the upper opening housing unit in this application.

[0026] Figure 3 This is a schematic diagram of the structure of the grooved cover plate unit in the present application from a top view.

[0027] Figure 4 Schematic diagram of the position and shape of the locking block in this application.

[0028] Figure 5 It is a structural schematic diagram of the lifting type scrubbing frame unit in this application.

[0029] Figure 6 It is a schematic diagram of the standby state of the lifting type scrubbing frame unit in this application.

[0030] Figure 7 Schematic diagram of the triggering method of the connecting engaging block of the lifting and lowering scrubbing frame unit in the present application.

[0031] Figure 8 This is a schematic diagram of the operating status of the lifting and scrubbing frame unit in this application.

[0032] Fig. 9 It is a schematic diagram of the position and shape of the engaging transmission hole in this application.

[0033] Fig.10 This is a schematic diagram of how the bristles on the radial plate are used in this application.

[0034] Fig.11 This is a schematic diagram of how to use the water adding hole in this application.

[0035] Fig.12 This is a schematic diagram of a possible position of the annular position indicating groove of the radial plate when the present application is in normal use, viewed from a top down angle.

[0036] Fig.13 This is a schematic diagram of the use of the annular position indicating groove of the radial plate in this application.

[0037] Fig.14 This is a schematic diagram of the correct waiting position of the lifting scrubbing frame unit in the present application from a top view.

[0038] In the figure, the meanings of the symbols are as follows.

[0039] Water adding pipe a, lever b, water drop c; Agitator shaft 11, agitator blade 12, drive motor 13, coupling 14; An upper opening housing unit 1, a lifting type scrubbing frame unit 2, a snap-fit ​​block 3, and a grooved cover unit 4; Circular cylinder 101, bottom plate with holes 102, protruding plate 103, vertical stud 104, lower nut 105, discharge port 106, upper nut 107; Radial plate 201, engaging transmission hole 202, vertical plate 203, bristles 204, lifting limit ring 205, radial plate annular position indicating groove 206; Cover plate 401 , annular hole 402 , annular groove 403 , limiting hole 404 , ball 405 , water adding hole 406 , shaft limiting ring 407 , feed port 408 . DETAILED DESCRIPTION

[0040] The following description is merely a preferred embodiment of the present application and does not limit the scope of the present application.

[0041] like Figure 1-Figure 14 As shown, a mixing equipment for the production and processing of crayfish feed comprises a stirring shaft 11, stirring blades 12, and a driving motor 13, and also comprises an upper opening shell unit 1 for mounting the stirring shaft 11, a lifting type brushing frame unit 2 which is sleeved on the stirring shaft 11 and used for cleaning the inner side surface of the upper opening shell unit 1, a clamping block 3 which is arranged on the stirring shaft 11 and fixes the lifting type brushing frame unit 2 by clamping, so as to transmit and connect the driving motor 13 and the lifting type brushing frame unit 2, and a grooved cover plate unit 4 which is arranged on the upper opening shell unit 1, clamps the lifting type brushing frame unit 2, and fixes the clamping block 3 and the lifting type brushing frame unit 2 by pulling the lifting type brushing frame unit 2 upward.

[0042] In this embodiment, there is always sufficient vertical limiting effect between the grooved cover unit 4 and the lifting type scrubbing frame unit 2, ensuring that the latter is not prone to vertical swinging and forward, backward, left and right movement in any vertical plane.

[0043] Therefore, whether the mixing device is performing normal stirring operation or inner wall cleaning operation, the lifting scrubbing frame unit 2 is not easy to bump into the stirring blade 12 and the upper opening shell unit 1, ensuring that the inner wall cleaning function of the mixing device has the advantages of high efficiency and safety.

[0044] Among them, the stirring shaft 11 is on the top and the driving motor 13 is on the bottom. The feeding operation of the mixing equipment has the following two optional methods: 1. A feeding port is set on the grooved cover unit 4; 2. The grooved cover unit 4 is completely lifted upward from the upper opening shell unit 1, and feeding is carried out in the gap between the two.

[0045] In addition, the rotating area of ​​the stirring blade 12 is cylindrical, and the rotating area of ​​the lifting type brushing frame unit 2 is barrel-shaped, and the latter is completely outside the former. Therefore, there is basic safety between the stirring operation of the crayfish feed raw materials and the inner wall brushing operation of the upper opening housing unit 1.

[0046] On the other hand, the functions of the slotted cover plate unit 4 mainly include: 1. Lift and press down the lifting type scrubbing frame unit 2, thereby establishing and releasing the power transmission relationship between it and the engaging block 3; 2. Provide a limiting effect in any vertical plane for the rotating lifting scrubbing frame unit 2, allowing the lifting scrubbing frame unit 2 to rotate only, and not allowing it to swing in any vertical plane, or shift forward, backward, left, or right.

[0047] Finally, it should be noted that: First, when the mixing device is in normal stirring operation, although the engaging block 3 is in a power-off state, the pushed material may also drive the lifting and scrubbing frame unit 2 to rotate. The rotation action is disordered and uncontrollable, but still safe, that is, the limiting effect of the grooved cover unit 4 on the lifting and scrubbing frame unit 2 is always effective. At this time, the lifting and scrubbing frame unit 2 has an auxiliary stirring function near the inner wall of the device; Second, when the mixing device is performing the inner wall scrubbing operation, the driving motor 13 will still drive the stirring blade 12 to rotate together, and this rotation action can be omitted, which is also one of the subsequent improvement directions of the mixing device; Third, when the driving motor 13 is driving to scrub the inner wall, its output power can be greatly reduced, the rotation and scrubbing action of the lifting and lowering scrubbing frame unit 2 is relatively slow, and the driving load is relatively small.

[0048] The upper opening housing unit 1 includes a circular cylinder 101 and a bottom plate 102 with holes, which is arranged on the circular cylinder 101 and located above the driving motor 13 and is used for inserting the stirring shaft 11 .

[0049] In this embodiment, the circular cylinder 101 and the bottom plate 102 with holes are integrally formed, and the vertical cross-sectional shape of the bottom plate 102 is similar to "a straight line, a U-shape, or a W-shape". Figure 1 The perforated bottom plate 102 in the figure corresponds to the "W-shape".

[0050] One of the advantages of the latter two styles of the perforated bottom plate 102 is that the material discharge is concentrated and the material discharge speed is fast, while one of the disadvantages is that its shape is relatively complex, and the lifting type scrubbing frame unit 2 needs to correspond to its shape, which is also relatively complex.

[0051] The opening of the perforated bottom plate 102 is provided with an existing thrust bearing, which allows the stirring shaft 11 to rotate but prohibits the stirring shaft 11 from falling. The coupling 14 is arranged below the perforated bottom plate 102, that is, it is external.

[0052] The lifting and scrubbing frame unit 2 includes a radial plate 201, a locking transmission hole 202 arranged on the radial plate 201, which is sleeved on the stirring shaft 11 and is used to clamp the locking block 3, two vertical plates 203 respectively arranged at the two end positions of the radial plate 201, bristles 204 arranged on the radial plate 201 and the vertical plates 203 and used to scrub the inner annular surface of the circular cylinder 101 and the upper surface of the perforated bottom plate 102, and a lifting limit ring 205 arranged on the two vertical plates 203 and locking the grooved cover plate unit 4.

[0053] In this embodiment, the word "radial" of the radial plate 201 means that its vertical projection always passes through the central axis of the circular cylinder 101. The shape of the engaging transmission hole 202 is circular, and the central axes of the engaging transmission hole 202, the stirring shaft 11 and the circular cylinder 101 all coincide.

[0054] In addition, the specific shape of the radial plate 201 is determined by the circular cylinder 101, ensuring that each position on the radial plate 201 is sufficiently and appropriately close to the upper surface of the bottom plate with holes 102. For example, the distance between the radial plate 201 and the bottom plate with holes 102, and between the vertical plate 203 and the circular cylinder 101 can be set to 1.0-1.5 cm, and the effective length of the bristles 204 is slightly larger than the above distance size.

[0055] The lifting limiting ring 205 has a limiting effect on any vertical plane on the grooved cover unit 4, thereby preventing the lifting and lowering scrubbing frame unit 2 from swinging vertically and moving forward, backward, left and right.

[0056] Finally, the grooved cover plate unit 4 opens and closes the inner wall cleaning function of the mixing device by rising and falling together with the lifting and scrubbing frame unit 2, and provides a precise, low-resistance limiting track for the rotating lifting and scrubbing frame unit 2.

[0057] The engaging block 3 is an inverted truncated cone-shaped block, and a mounting hole for connecting the stirring shaft 11 is provided on the engaging block 3 .

[0058] In this embodiment, the lifting and lowering brush frame unit 2 is made of engineering plastic, and the locking block 3 is made of ordinary rubber, which has appropriate elasticity and is fixedly connected to the stirring shaft 11. The diameter value of the locking transmission hole 202 is located between the large diameter and the small diameter of the locking block 3, so as to be used to be locked on the inclined annular surface of the latter.

[0059] At this point, the power of the driving motor 13 can be transmitted to the lifting brush frame unit 2 through the coupling 14, the stirring shaft 11 and the locking block 3 in sequence, causing it to rotate relatively slowly, allowing the bristles 204 to brush all inner side areas of the mixing device that are permanently below the material surface.

[0060] The grooved cover plate unit 4 includes a cover plate 401 arranged on the upper end surface of the circular cylinder 101, an annular hole 402 arranged on the lower surface of the cover plate 401 and used to radially engage the vertical plate 203, and an annular groove 403 arranged on the inner side of the annular hole 402 and having a radial width greater than that of the annular hole 402 and used to pull and press down the lifting limit ring 205.

[0061] In this embodiment, the overall vertical cross-sectional shape of the annular hole 402 and the annular groove 403 is a "T-shape", and the two annular surfaces of the former are always engaged with the vertical plate 203, and the two annular surfaces of the latter are always engaged with the lifting limit ring 205, ensuring that the rotation movement of the lifting brush frame unit 2 has sufficient accuracy.

[0062] In addition, one of the necessary preparation operations for starting the inner wall scrubbing function of the mixing device is to pull the lifting limit ring 205 on the inner bottom surface of the annular groove 403 so that the locking transmission hole 202 is locked with the locking block 3. For details, please refer to the attached Figure 7 .

[0063] One of the necessary operations for shutting down the inner wall scrubbing function of the mixing device is to press down the inner top surface of the annular groove 403 to press the lifting limit ring 205 so that the engaging transmission hole 202 is separated from the engaging block 3. For details, please refer to the attached Figure 6 At this time, the lifting type scrubbing frame unit 2 can be suspended on the annular groove 403 or fall on the perforated bottom plate 102 .

[0064] When the mixing device is performing the inner wall scrubbing operation, the inner bottom surface and the inner top surface of the annular groove 403 should not touch the lifting limit ring 205, thereby providing the advantage of low resistance for the rotation action of the lifting scrubbing frame unit 2. For details, please refer to the attached Figure 8 .

[0065] The upper opening shell unit 1 also includes a protruding plate 103 arranged on the outer ring surface of the circular cylinder 101, a vertical stud 104 arranged on the protruding plate 103 and plugged into the cover plate 401, and a nut 105 below arranged on the vertical stud 104 and used to lift the cover plate 401; the grooved cover plate unit 4 also includes a limiting hole 404 arranged on the cover plate 401 and used to pass the vertical stud 104.

[0066] In this embodiment, the vertical stud 104 is always inserted into the limiting hole 404, so that the cover plate 401 can only be raised and lowered, and cannot be moved and rotated laterally, thereby avoiding lateral displacement of the lifting and scrubbing frame unit 2.

[0067] The lower nut 105 rotates upward to lift the cover plate 401 , and the lower nut 105 rotates downward to lower the cover plate 401 .

[0068] In addition, the upper nut 107 may be further provided on the protruding plate 103 to prevent the cover plate 401 from accidentally popping up, otherwise the lifting and lowering scrubbing frame unit 2 may be easily broken.

[0069] The vertical dimension of the annular groove 403 is greater than the thickness of the lifting limit ring 205 ; the grooved cover plate unit 4 also includes a ball 405 arranged on the annular surface of the annular hole 402 and / or the annular groove 403 .

[0070] In this embodiment, the vertical dimension reservation feature of the annular groove 403 and the ball 405 are both for making the rotation action of the lifting type scrubbing frame unit 2 lower in resistance and more labor-saving.

[0071] The grooved cover plate unit 4 further includes a water supply hole 406 which is arranged on the upper surface of the cover plate 401 , is connected to the annular groove 403 , and is used for spraying water onto the bristles 204 .

[0072] In this embodiment, the ultimate function of the water adding hole 406 is to add a relatively small amount of water to the bristles 204 in a targeted manner, so that the original "dry brushing" effect is upgraded to "cleaning and brushing", which can greatly improve the degree of brushing removal of residual materials on the inner ring surface of the upper opening shell unit 1.

[0073] At this time, the annular hole 402, the annular groove 403, the lifting limit ring 205 and the vertical plate 203 are also guiding structures for the cleaning water to flow downward onto the bristles 204, which is very efficient and practical.

[0074] On the other hand, compared with the existing common "flooding" method, the above-mentioned targeted scrubbing method has at least the following advantages: water saving, small rotation resistance of the lifting scrubbing frame unit 2, and convenient recycling of the brushed feed materials. Of course, water will also drip downward from the lifting limit ring 205 and the vertical plate 203, and the above-mentioned efficiency of guiding the cleaning water is not 100%. For details, please refer to the attached Fig.11 .

[0075] The water adding hole 406 is in the shape of a fan ring; the upper opening shell unit 1 also includes a discharge port 106 arranged on the perforated bottom plate 102 and circumferentially aligned with the water adding hole 406; the lifting type brushing frame unit 2 also includes a radial plate annular position indicating groove 206 arranged on the upper surface of the lifting limit ring 205 and circumferentially aligned with the radial plate 201, and used to circumferentially stagger the radial plate 201 and the discharge port 106.

[0076] In this embodiment, the inner wall cleaning operation of the mixing device only needs to be performed periodically, and most of the time, the mixing device is mainly in a rotating stirring operation. At this time, if the vertical projection of the radial plate 201 falls on the discharge port 106, the discharge efficiency of the material will be greatly reduced. The correct waiting position of the radial plate 201 can be referred to in the attached Fig.14 .

[0077] Among them, the radial plate annular position indicating groove 206 is located directly above the vertical plate 203 , and the connecting line of the two radial plate annular position indicating grooves 206 is aligned with the radial plate 201 , and the water adding hole 406 is also located substantially directly above the discharge port 106 .

[0078] Therefore, once the radial plate annular position indicator groove 206 is exposed at the water filling hole 406, it means that the radial plate 201 has largely blocked the discharge port 106, which needs to be avoided, so the lever b can be temporarily used to rotate and shift the entire lifting brush frame unit 2, which is another new function of the water filling hole 406.

[0079] The method of using the radial plate annular position indicating groove 206 is as follows: when the radial plate annular position indicating groove 206 is exposed at the water adding hole 406, first use the lever to plug in the radial plate annular position indicating groove 206, and then use the lever to rotate the lifting type brush frame unit 2 until the radial plate annular position indicating groove 206 is circumferentially offset from the water adding hole 406.

[0080] In this embodiment, when the inner wall of the mixing device is being brushed, the material inside has been fully discharged, and the inner wall brushing operation and the material stirring operation cannot be performed at the same time.

[0081] The above detailed description of the implementation methods of the present application is made in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present application. These are all non-creative modifications and are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A mixing device for producing and processing crayfish feed, comprising a stirring shaft (11), a stirring blade (12), and a driving motor (13), characterized in that: It also comprises an upper opening shell unit (1) for mounting the stirring shaft (11), a lifting type brush frame unit (2) sleeved on the stirring shaft (11) and used for cleaning the inner side surface of the upper opening shell unit (1), a clamping block (3) arranged on the stirring shaft (11) and fixed to the lifting type brush frame unit (2) by clamping, so as to drive and connect the driving motor (13) and the lifting type brush frame unit (2), and a grooved cover plate unit (4) arranged on the upper opening shell unit (1), clamped to the lifting type brush frame unit (2), and fixed to the lifting type brush frame unit (2) by lifting the lifting type brush frame unit (2) upwards.

2. The mixing device for producing and processing crayfish feed according to claim 1, characterized in that: The upper opening housing unit (1) comprises a circular cylinder (101), and a bottom plate (102) with holes arranged on the circular cylinder (101), located above the drive motor (13) and used for plugging the stirring shaft (11).

3. The mixing device for producing and processing crayfish feed according to claim 2, characterized in that: The lifting type scrubbing frame unit (2) comprises a radial plate (201), a locking transmission hole (202) arranged on the radial plate (201), sleeved on the stirring shaft (11) and used to clamp the locking block (3), two vertical plates (203) respectively arranged at the two end positions of the radial plate (201), bristles (204) arranged on the radial plate (201) and the vertical plates (203) and used to scrub the inner annular surface of the circular cylinder (101) and the upper surface of the perforated bottom plate (102), and a lifting limit ring (205) arranged on the two vertical plates (203) and locked with the grooved cover plate unit (4).

4. The mixing device for producing and processing crayfish feed according to claim 1, characterized in that: The engaging block (3) is an inverted truncated cone-shaped block, and a mounting hole for connecting the stirring shaft (11) is provided on the engaging block (3).

5. The mixing device for producing and processing crayfish feed according to claim 3, characterized in that: The grooved cover plate unit (4) comprises a cover plate (401) arranged on the upper end surface of the circular cylinder (101), an annular hole (402) arranged on the lower surface of the cover plate (401) and used to radially engage the vertical plate (203), and an annular groove (403) arranged on the inner side of the annular hole (402) and having a radial width greater than that of the annular hole (402) and used to pull up and press down the lifting limit ring (205).

6. The mixing device for producing and processing crayfish feed according to claim 5, characterized in that: The upper opening housing unit (1) further comprises a protruding plate (103) arranged on the outer annular surface of the circular cylinder (101), a vertical stud (104) arranged on the protruding plate (103) and plugged into the cover plate (401), and a nut (105) arranged on the vertical stud (104) and used to lift the cover plate (401); the slotted cover plate unit (4) further comprises a limiting hole (404) arranged on the cover plate (401) and used to pass the vertical stud (104).

7. The mixing device for producing and processing crayfish feed according to claim 5, characterized in that: The vertical dimension of the annular groove (403) is greater than the thickness of the lifting limit ring (205); the grooved cover plate unit (4) further comprises a ball (405) arranged on the annular surface of the annular hole (402) and / or the annular groove (403).

8. The mixing device for producing and processing crayfish feed according to claim 5, characterized in that: The grooved cover plate unit (4) further comprises a water supply hole (406) which is arranged on the upper surface of the cover plate (401), is connected to the annular groove (403), and is used for spraying water onto the bristles (204).

9. The mixing device for producing and processing crayfish feed according to claim 8, characterized in that: The water supply hole (406) is in the shape of a fan ring; the upper opening shell unit (1) further comprises a discharge port (106) arranged on the perforated bottom plate (102) and circumferentially aligned with the water supply hole (406); the lifting type scrubbing frame unit (2) further comprises a radial plate circumferential position indicating groove (206) arranged on the upper surface of the lifting limit ring (205) and circumferentially aligned with the radial plate (201) and used for circumferentially staggering the radial plate (201) and the discharge port (106).

10. The mixing device for producing and processing crayfish feed according to claim 9, characterized in that The method for using the radial plate annular position indicating groove (206) is as follows: when the radial plate annular position indicating groove (206) is exposed at the water filling hole (406), the radial plate annular position indicating groove (206) is first plugged into the radial plate annular position indicating groove (206) using a lever, and then the lifting type scrubbing frame unit (2) is rotated by the lever until the radial plate annular position indicating groove (206) is circumferentially offset from the water filling hole (406).

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