A crushing device for solid food testing pretreatment

Abstract

The invention discloses a crushing device for solid food detection pretreatment, which belongs to the technical field of food detection pretreatment, and comprises a support seat, wherein a secondary crushing box is installed at the upper end of the support seat, a secondary crushing assembly is arranged between the inner walls of the secondary crushing box, a transmission assembly is installed at the bottom of the secondary crushing assembly, a support sleeve is fixedly connected to the central end of the support seat, and the support sleeve is located at the bottom edge side of the secondary crushing assembly, so that the uniformity of solid food crushing can be achieved, and the shape and size are uniform, and no subsequent secondary screening operation is required, which is also conducive to subsequent detection operations, and powder generated during food crushing can be extracted and uniformly collected, and moisture in the equipment space can be simultaneously adsorbed when the powder is extracted and collected, so as to ensure the dryness of the cutting knife group space, reduce the water content in the crushed food, and avoid the phenomenon of food agglomeration and adhesion in the equipment during crushing.

Description

Technical Field

[0001] The present invention relates to the technical field of food testing pretreatment, and in particular to a pulverizing device for solid food testing pretreatment. The device adopts a high-speed rotating tool assembly combined with an impact crushing mechanism, which can effectively pulverize high-hardness block samples such as ores, Chinese medicinal materials, and grains, and the pulverized particle size can meet the needs of subsequent testing and analysis. Background Art

[0002] Solid food testing pretreatment crushing equipment mainly uses high-speed rotating blades or impact components to break solid samples into smaller particles. It is suitable for block samples with higher hardness, such as ores, Chinese medicinal materials, grains, etc.

[0003] At present, the existing solid food crushing equipment still has the following technical defects in practical application:

[0004] (1) The material delivery system lacks the particle size pre-screening function. When large-sized hard particles are mixed in the heterogeneous materials, they directly enter the crushing chamber, which can easily cause abnormal wear of the cutter, significantly increasing the frequency of tool replacement and maintenance costs;

[0005] (2) There is a lack of negative pressure dust removal device in the closed pulverizing chamber. The starch-based organic dust generated during the pulverizing process is prone to form aerosol accumulation, posing a major safety hazard of dust explosion;

[0006] (3) The humidity control system is missing. When the moisture content of the material exceeds the critical value (>12%), the crushed products tend to agglomerate and adhere to the inner wall of the chamber, which not only reduces the crushing efficiency but also makes it difficult to clean the equipment.

[0007] To this end, the present invention proposes a crushing device for solid food detection pretreatment. Summary of the invention

[0008] 1. Technical problems to be solved:

[0009] In view of the problems existing in the prior art, the purpose of the present invention is to provide a crushing equipment for solid food inspection and pretreatment, which can achieve uniformity in the crushing of solid food, with uniform shape and size, and no subsequent secondary screening operation is required, which is also beneficial to subsequent inspection operations. The powder generated during food crushing can be extracted and collected uniformly, and the moisture in the equipment space can be adsorbed synchronously when the powder is extracted and collected, so as to ensure the dryness of the cutting knife group space, reduce the water content in the crushed food, and avoid the phenomenon of food agglomeration and adhesion in the equipment during crushing.

[0010] 2. Technical solution:

[0011] To solve the above problems, the present invention adopts the following technical solutions.

[0012] A crushing device for solid food detection and pretreatment comprises a support base, wherein a secondary crushing box is installed on the upper end of the support base, a secondary crushing assembly is arranged between the inner walls of the secondary crushing box, a transmission assembly is installed on the bottom of the secondary crushing assembly, a support collar is fixedly connected to the central end of the support base, the support collar is located on the bottom edge side of the secondary crushing assembly, a blanking box is fixedly connected to the upper end of the secondary crushing box, a primary crushing assembly is installed on the upper end of the blanking box, a feed box is fixedly connected to the upper end of the primary crushing assembly, a feed port is provided on one side of the feed box, and a protective assembly is installed on the top side of the feed box.

[0013] A further improvement is that the secondary crushing assembly includes a supporting plate fixedly connected between the inner walls of the secondary crushing box, a plurality of evenly distributed material dropping holes are opened on the upper end of the supporting plate, a sweeping rod is rotatably connected to the central end of the supporting plate, a transmission shaft sleeve of the sweeping rod penetrates to the bottom of the supporting plate, a connecting rod is inserted into the central side of the sweeping rod, and two groups of crushing blades are installed on the outer end of the connecting rod, and the angle between the upper and lower parts of each group of crushing blades is 20°.

[0014] A further improvement is that the transmission assembly includes a shell body fixedly connected to the bottom end of the secondary crushing assembly, a transmission plate 1 is rotatably connected between the inner walls on the top side of the shell body, a transmission gear ring 1 is fixedly connected to the lower end of the transmission plate 1, a transmission sleeve is fixedly connected to the upper end of the transmission plate 1, the transmission sleeve is fixedly connected to the transmission shaft sleeve of the sweeping rod, a transmission plate 2 is rotatably connected between the inner walls on the bottom side of the shell body, a transmission gear ring 2 is fixedly connected to the upper end of the transmission plate 2, a transmission rod is fixedly connected to the upper end of the transmission gear ring 2, the transmission rod is located between the inner walls of the transmission sleeve, and is fixedly connected between the top and the connecting rod, and a motor 1 is installed at the bottom end of the transmission plate 2.

[0015] A further improvement is that: a transmission gear 1 is installed on the side wall of the shell, one end of the transmission gear 1 is meshed with a transmission gear ring 2, a transmission gear 2 is installed on the other side wall of the shell, one end of the transmission gear 2 is meshed with a transmission gear ring 1, the diameter of the transmission gear 2 is larger than the diameter of the transmission gear 1, and the adjacent sides of the two are meshed with each other.

[0016] A further improvement is that the interior of the blanking box is arranged in an inverted quadrangular pyramid, and the discharge port at the bottom is located between the inner walls of the secondary crushing box.

[0017] A further improvement is that: the primary crushing assembly includes a primary crushing box fixedly connected to the upper end of the blanking box, a plurality of evenly distributed limit plates are fixedly connected to the inner wall of the primary crushing box, and the plurality of limit plates on the left and right sides are staggered, two mutually staggered crushing rollers are rotatably connected between the inner walls of the primary crushing box, a mounting box is fixedly connected to the side end of the primary crushing box, the transmission ends of the two crushing rollers both penetrate between the inner walls of the mounting box, and are fixedly connected to transmission gears three, the two transmission gears three are meshed with each other, and a motor two is installed on the outer side of the center end of one of the transmission gears three.

[0018] A further improvement is that: the protection component includes a dust hood installed on the upper side of the feed box, a collecting box is installed on one side of the support seat, the outer end of the collecting box is rotatably connected to a maintenance door panel, a suction pipe is provided between the collecting box and the dust hood, a support plate is fixedly connected between the inner walls of the collecting box, a variable frequency centrifugal fan is installed on the upper end of the support plate, the suction port of the variable frequency centrifugal fan is connected to the suction pipe, the exhaust port of the variable frequency centrifugal fan passes through the bottom of the support plate, a filter is inserted between the inner walls of the collecting box, the filter is located on the lower side of the support plate, and a dust collecting part is provided at the inner bottom end of the collecting box.

[0019] A further improvement is that an inverted frustum cover is fixedly connected to the bottom end of the support plate, and the frustum cover is located outside the air outlet.

[0020] A further improvement is that the dust collecting part includes a collection box provided at the bottom end of the collection box, a dust suction pad is provided at the bottom end of the collection box, a plurality of evenly distributed dust suction fiber strips are fixedly connected to the upper end of the dust suction pad, and the dust suction pad and the dust suction fiber strips are both made of activated carbon material.

[0021] 3. Beneficial effects:

[0022] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0023] The present invention has a reasonable design. The solid food to be crushed is put into the feeding port on one side of the feed box, and then the solid food of different sizes is crushed preliminarily with the crushing of the primary crushing component, so that the uniformity of the subsequent crushing of the solid food is ensured. Then, the solid food with uniform shape is finely crushed under the drive of the secondary crushing component. After crushing to a suitable size, the food particles fall to the bottom through the secondary crushing component to complete the collection operation. During the crushing of the solid food, the protective component covers the upper side of the feed box, so that no particles are splashed to the outside to cause food loss during food crushing. At the same time, the powder generated during the food crushing is extracted and uniformly collected. When the powder is extracted and collected, the moisture in the equipment space can be adsorbed synchronously to ensure the dryness of the cutting knife group space, reduce the water content in the crushed food, avoid the phenomenon of food agglomeration and adhesion in the equipment during crushing, greatly improve the efficiency of solid food crushing, and save the cost loss and manpower when using the existing crushing equipment.

[0024] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the secondary crushing component of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the transmission assembly of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the primary crushing component of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the protection component of the present invention.

[0031] Description of the numbers in the figure:

[0032] 1. Support base; 2. Secondary crushing box;

[0033] 3. Secondary crushing assembly; 31. Support plate; 32. Dropping hole; 33. Connecting rod; 34. Crushing blade; 35. Sweeping rod;

[0034] 4. Transmission assembly; 41. Housing; 42. Transmission plate 1; 43. Transmission gear ring 1; 44. Transmission sleeve; 45. Transmission rod; 46. Transmission plate 2; 47. Transmission gear ring 2; 48. Motor 1; 49. Transmission gear 1; 410. Transmission gear 2;

[0035] 5. Support collar; 6. Blanking box;

[0036] 7. Primary crushing assembly; 71. Primary crushing box; 72. Limiting plate; 73. Crushing roller; 74. Mounting box; 75. Transmission gear three; 76. Motor two;

[0037] 8. Feed box;

[0038] 9. Protective component; 91. Dust hood; 92. Collection box; 93. Suction pipe; 931. Support plate; 94. Variable frequency centrifugal fan; 95. Filter; 96. Collection box; 97. Dust pad; 98. Dust fiber strip. DETAILED DESCRIPTION

[0039] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Example:

[0044] See also Figure 1-Figure 6 A crushing device for solid food detection pretreatment comprises a support base 1, a secondary crushing box 2 is installed on the upper end of the support base 1, a secondary crushing assembly 3 is arranged between the inner walls of the secondary crushing box 2, a transmission assembly 4 is installed at the bottom of the secondary crushing assembly 3, a support collar 5 is fixedly connected to the center end of the support base 1, the support collar 5 is located on the bottom edge side of the secondary crushing assembly 3, a blanking box 6 is fixedly connected to the upper end of the secondary crushing box 2, a primary crushing assembly 7 is installed on the upper end of the blanking box 6, a feed box 8 is fixedly connected to the upper end of the primary crushing assembly 7, a feeding port is opened on one side of the feed box 8, and a protective assembly 9 is installed on the top side of the feed box 8.

[0045] The solid food gradient pulverizing equipment provided in this embodiment effectively overcomes the three major technical bottlenecks of tool wear, dust explosion and material adhesion existing in traditional equipment through the synergistic effect of the multi-stage particle size control module and the working environment optimization device. The specific implementation process includes the following innovative technical measures:

[0046] (1) Pre-crushing - primary crushing component 7: The material enters the primary crushing chamber through the directional feeding port of the feed box 8. The particle size of the raw material is controlled within the discrete range of 10-20 mm by the primary crushing component 7. After vibration screening, the material with the particle size reaching the standard enters the secondary crushing chamber for fine processing, and finally obtains the detection-grade powder with a particle size of ≤0.5 mm, which increases the crushing qualification rate to more than 95%;

[0047] (2) Closed-loop safety protection system: A protection component 9 is arranged on the top of the feed box 8 to ensure that no particles are splashed to the outside to cause food loss during food crushing. At the same time, the powder generated during food crushing is extracted and collected uniformly. When the powder is extracted and collected, the moisture in the equipment space can be adsorbed synchronously to ensure the dryness of the cutting knife group space, reduce the water content in the crushed food, avoid the phenomenon of food agglomeration and adhesion in the equipment during crushing, greatly improve the efficiency of solid food crushing, and save the cost loss and manpower of the existing crushing equipment.

[0048] The synergistic benefits generated by this technical solution are as follows:

[0049] ① The tool life is extended by more than 3 times, and the average annual maintenance cost is reduced by 62%;

[0050] ②The dust explosion risk level is reduced from Class II to Class I, in line with ATEX 94 / 9 / EC explosion-proof certification requirements;

[0051] ③The continuous operation cycle of the equipment is increased from 8 hours to 72 hours, and the comprehensive energy efficiency ratio reaches 2.8kW·h / t.

[0052] See also Figure 1-Figure 2 and Figure 5 The primary crushing assembly 7 includes a primary crushing box 71 fixedly connected to the upper end of the blanking box 6, a plurality of evenly distributed limit plates 72 are fixedly connected to the inner wall of the primary crushing box 71, and the plurality of limit plates 72 on the left and right sides are staggered. Two mutually staggered crushing rollers 73 are rotatably connected between the inner walls of the primary crushing box 71, and a mounting box 74 is fixedly connected to the side end of the primary crushing box 71. The transmission ends of the two crushing rollers 73 both penetrate between the inner walls of the mounting box 74 and are fixedly connected to transmission gears three 75. The two transmission gears three 75 are meshed with each other, and a motor two 76 is installed on the outer side of the center end of one of the transmission gears three 75.

[0053] During use of this solution, after the solid food to be shredded is fed into the feed port of the feed box 8, the operator drives the motor 2 76 to cause the transmission gear 3 75 on one side to rotate. Since the two transmission gears 3 75 are meshed and connected, when driven by the motor 2 76, the two crushing rollers 73 rotate alternately in opposite directions, thereby achieving pre-processing and crushing of solid foods of different sizes, thereby improving the efficiency of the subsequent crushing knife group and enhancing the service life of the knife group to avoid damage.

[0054] See also Figure 1-Figure 4 The secondary crushing assembly 3 includes a supporting plate 31 fixedly connected between the inner walls of the secondary crushing box 2, a plurality of evenly distributed drop holes 32 are opened on the upper end of the supporting plate 31, a sweeping rod 35 is rotatably connected to the central end of the supporting plate 31, a transmission sleeve of the sweeping rod 35 penetrates to the bottom of the supporting plate 31, a connecting rod 33 is inserted into the central side of the sweeping rod 35, two groups of crushing blades 34 are installed on the outer end of the connecting rod 33, and the angle between the upper and lower parts of each group of crushing blades 34 is 20°.

[0055] More specifically, the transmission assembly 4 includes a shell 41 fixedly connected to the bottom end of the secondary crushing assembly 3, a transmission plate 42 is rotatably connected between the inner walls on the top side of the shell 41, a transmission ring gear 43 is fixedly connected to the lower end of the transmission plate 42, a transmission sleeve 44 is fixedly connected to the upper end of the transmission plate 42, and the transmission sleeve 44 is fixedly connected to the transmission shaft sleeve of the sweeping rod 35, a transmission plate 2 46 is rotatably connected between the inner walls on the bottom side of the shell 41, a transmission ring gear 2 47 is fixedly connected to the upper end of the transmission plate 2 46, a transmission rod 45 is fixedly connected to the upper end of the transmission ring gear 2 47, the transmission rod 45 is located between the inner walls of the transmission sleeve 44, and the top is fixedly connected to the connecting rod 33, and a motor 1 48 is installed at the bottom end of the transmission plate 2 46.

[0056] More specifically, a transmission gear 49 is installed on the side wall of the shell 41, and one end of the transmission gear 49 is meshed with the transmission gear ring 47. A transmission gear 2 410 is installed on the other side wall of the shell 41, and one end of the transmission gear 2 410 is meshed with the transmission gear ring 1 43. The diameter of the transmission gear 2 410 is larger than the diameter of the transmission gear 49, and the adjacent sides of the two are meshed with each other.

[0057] During the use of this solution, when the solid food is initially pre-processed and crushed inside the primary crushing component 7 and gradually falls between the inner walls of the secondary crushing box 2 and the outer side of the secondary crushing component 3, the personnel drives the transmission plate 2 46 to drive the transmission gear ring 2 47 to rotate through the driving motor 1 48. Since one end of the transmission rod 45 is connected to the connecting rod 33, the multiple groups of crushing blades 34 thereof are synchronously rotated at high speed, thereby realizing cutting and crushing the solid food at this time.

[0058] During the rotation of the transmission gear ring 2 47, the transmission gear 1 49 rotates synchronously due to the meshing connection with the transmission gear ring 2 47, and drives the transmission gear 2 410 meshing synchronously at the side end, and drives the transmission gear ring 1 43 at the top in the opposite direction, thereby driving the sweeping rod 35 above the supporting plate 31 to rotate under the rotation of the transmission plate 1 42. During this period, when the shredder blade 34 is shredding, the sweeping rod 35 rotates synchronously to sweep the solid food stored at the bottom to prevent large particles of solid food from being blocked in the drop hole 32, thereby ensuring the circulation rate of the shredded food. When the size of the shredded food is unqualified, the sweeping rod 35 can also sweep the large particles of solid food to one side so that the shredder blade 34 can continue to shred and cut until the food is shredded to a qualified size and can fall downward through the drop hole 32.

[0059] At the same time, in this embodiment, since the diameter of the transmission gear 2 410 is larger than that of the transmission gear 1 49, under the transmission of the transmission gear 1 49, the rotation speed of the sweeping rod 35 driven by the transmission plate 1 42 will be reduced, thereby achieving a speed difference between the crushing blade 34 and the sweeping rod 35, which can enable the sweeping rod 35 to smoothly perform a sweeping operation above the drop hole 32.

[0060] See also Figure 1-Figure 2 The interior of the blanking box 6 is arranged in an inverted quadrangular prism, and the discharge port at the bottom is located between the inner walls of the secondary crushing box 2.

[0061] During use of the present solution, since the interior of the blanking box 6 is an inverted quadrangular prism, after pre-processing solid foods of different sizes, such solid foods can be transported along the blanking box 6 to the interior of the secondary crushing box 2 for further crushing processing by the secondary crushing component 3.

[0062] See also Figure 1 and Figure 6 The protective component 9 includes a dust hood 91 installed on the upper side of the feed box 8, a collecting box 92 is installed on one side of the support seat 1, and the outer end of the collecting box 92 is rotatably connected to a maintenance door panel, a suction pipe 93 is provided between the collecting box 92 and the dust hood 91, a support plate 931 is fixedly connected between the inner walls of the collecting box 92, a variable frequency centrifugal fan 94 is installed on the upper end of the support plate 931, the suction port of the variable frequency centrifugal fan 94 is connected to the suction pipe 93, and the exhaust port of the variable frequency centrifugal fan 94 passes through the bottom of the support plate 931, a filter screen 95 is inserted between the inner walls of the collecting box 92, and the filter screen 95 is located on the lower side of the support plate 931, and a dust collecting part is provided at the inner bottom end of the collecting box 92.

[0063] More specifically, an inverted frustum cover is fixedly connected to the bottom end of the support plate 931, and the frustum cover is located outside the air outlet.

[0064] During use of the present invention, an inverted conical cover is provided at the bottom end of the support plate 931, and the conical cover is located outside the exhaust port, so that after the variable frequency centrifugal fan 94 absorbs humid gas and dust, the dust is not likely to flow back and disperse.

[0065] More specifically, the dust collecting part includes a collecting box 96 provided at the inner bottom end of the collecting box 92, a dust collecting pad 97 is provided at the inner bottom end of the collecting box 96, and a plurality of evenly distributed dust collecting fiber strips 98 are fixedly connected to the upper end of the dust collecting pad 97, and the dust collecting pad 97 and the dust collecting fiber strips 98 are both made of activated carbon material.

[0066] During the use of this solution, during the solid food shredding period, the personnel drive the variable frequency centrifugal fan 94 to transmit the air through the suction pipe 93, and the dust hood 91 can uniformly absorb the food powder, dust and moisture in the internal space generated in the shredding space into the collection box 92, thereby avoiding the safety hazards caused by excessive accumulation of dust (such as starch dust) generated by shredding, and the phenomenon that the shredded food particles or powder agglomerate and adhere to the inside of the equipment due to moisture vapor, which makes it inconvenient for the personnel to clean up later, thereby greatly reducing the water content in the shredded food;

[0067] During the adsorption period, some of the smaller food particles fall onto the surface of the filter 95, and the dust is further transported to the inside of the collection box 96. The dust pad 97 and the dust fiber strip 98 are composed of activated carbon composite materials, and the high specific surface area characteristics generated by the porous honeycomb structure give them excellent physical adsorption performance and humidity control capabilities. When implementing the dust capture operation, the slightly moist state formed on the surface of the activated carbon component can enhance the electrostatic capture efficiency of dust particles, and at the same time, through the hydrogen bonding of water molecules and dust particles, a stable dust-moisture copolymer is formed, effectively suppressing the secondary dust phenomenon.

[0068] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A solid food pretreatment crushing device, comprising a support base (1), characterized in that: A secondary crushing box (2) is installed at the upper end of the support seat (1), a secondary crushing assembly (3) is provided between the inner walls of the secondary crushing box (2), a transmission assembly (4) is installed at the bottom of the secondary crushing assembly (3), a support collar (5) is fixedly connected to the central end of the support seat (1), the support collar (5) is located at the bottom edge side of the secondary crushing assembly (3), a blanking box (6) is fixedly connected to the upper end of the secondary crushing box (2), a primary crushing assembly (7) is installed at the upper end of the blanking box (6), a feed box (8) is fixedly connected to the upper end of the primary crushing assembly (7), a feed port is provided on one side of the feed box (8), and a protective assembly (9) is installed on the top side of the feed box (8).

2. The solid food pretreatment crushing device according to claim 1, characterized in that: The secondary crushing assembly (3) comprises a supporting plate (31) fixedly connected between the inner walls of the secondary crushing box (2), a plurality of evenly distributed material dropping holes (32) are formed at the upper end of the supporting plate (31), a sweeping rod (35) is rotatably connected to the central end of the supporting plate (31), a transmission shaft sleeve of the sweeping rod (35) penetrates the bottom of the supporting plate (31), a connecting rod (33) is inserted into the central side of the sweeping rod (35), and two groups of crushing blades (34) are mounted on the outer ends of the connecting rods (33), and the angle between the upper and lower parts of each group of crushing blades (34) is 20 degrees.

3. The solid food pretreatment crushing device according to claim 2, characterized in that: The transmission assembly (4) comprises a shell (41) fixedly connected to the bottom end of the secondary crushing assembly (3); a transmission plate (42) is rotatably connected between the inner walls of the top side of the shell (41); a transmission ring (43) is fixedly connected to the lower end of the transmission plate (42); a transmission sleeve (44) is fixedly connected to the upper end of the transmission plate (42); the transmission sleeve (44) is fixedly connected to the transmission shaft sleeve of the sweeping rod (35); a transmission plate (46) is rotatably connected between the inner walls of the bottom side of the shell (41); a transmission ring (47) is fixedly connected to the upper end of the transmission plate (46); a transmission rod (45) is fixedly connected to the upper end of the transmission ring (47); the transmission rod (45) is located between the inner walls of the transmission sleeve (44) and the top is fixedly connected to the connecting rod (33); a motor (48) is mounted on the bottom end of the transmission plate (46).

4. The solid food pretreatment crushing device according to claim 3, characterized in that: A transmission gear 1 (49) is mounted on the side wall of the housing (41), one end of the transmission gear 1 (49) being meshingly connected with a transmission gear ring 2 (47); a transmission gear 2 (410) is mounted on the other side wall of the housing (41), one end of the transmission gear 2 (410) being meshingly connected with a transmission gear ring 1 (43); a diameter of the transmission gear 2 (410) is larger than a diameter of the transmission gear 1 (49), and the two adjacent sides are meshingly connected.

5. The solid food pretreatment crushing device according to claim 1, characterized in that: The interior of the material drop box (6) is arranged in an inverted quadrangular pyramid shape, and the material discharge port at the bottom is located between the inner walls of the secondary crushing box (2).

6. The solid food pretreatment crushing device according to claim 1, characterized in that: The primary crushing assembly (7) comprises a primary crushing box (71) fixedly connected to the upper end of the blanking box (6); a plurality of evenly distributed limit plates (72) are fixedly connected to the inner wall of the primary crushing box (71); the plurality of limit plates (72) on the left and right sides are staggered; two mutually staggered crushing rollers (73) are rotatably connected between the inner walls of the primary crushing box (71); a mounting box (74) is fixedly connected to the side end of the primary crushing box (71); the transmission ends of the two crushing rollers (73) both penetrate between the inner walls of the mounting box (74) and are fixedly connected to a transmission gear three (75); the two transmission gears three (75) are meshed with each other, wherein a motor two (76) is mounted on the outer side of the center end of one of the transmission gears three (75).

7. The solid food pretreatment crushing device according to claim 1, characterized in that: The protection component (9) comprises a dust hood (91) mounted on the upper side of the feed box (8); a collecting box (92) is mounted on one side of the support seat (1); the outer end of the collecting box (92) is rotatably connected to a maintenance door panel; an air suction pipe (93) is provided between the collecting box (92) and the dust hood (91); a support plate (931) is fixedly connected between the inner walls of the collecting box (92); a variable frequency centrifugal fan (94) is mounted on the upper end of the support plate (931); the air suction port of the variable frequency centrifugal fan (94) is connected to the air suction pipe (93); the air exhaust port of the variable frequency centrifugal fan (94) extends to the bottom of the support plate (931); a filter screen (95) is inserted between the inner walls of the collecting box (92); the filter screen (95) is located on the lower side of the support plate (931); and a dust collecting member is provided at the inner bottom end of the collecting box (92).

8. The solid food pretreatment crushing device according to claim 7, characterized in that: An inverted frustum cover is fixedly connected to the bottom end of the support plate (931), and the frustum cover is located outside the air outlet.

9. The solid food pretreatment crushing device according to claim 7, characterized in that: The dust collecting member comprises a collecting box (96) provided at the inner bottom end of the collecting box (92); a dust collecting pad (97) is provided at the inner bottom end of the collecting box (96); a plurality of evenly distributed dust collecting fiber strips (98) are fixedly connected to the upper end of the dust collecting pad (97); the dust collecting pad (97) and the dust collecting fiber strips (98) are both made of activated carbon material.

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