Multistage micro-pulverizing grinding device for pig feed processing

Abstract

The present application relates to pig feed processing grinding device technical field, and disclose a kind of multistage micro-pulverization grinding device for pig feed processing, including device shell, the bottom of the device shell is fixedly installed with bracket base, the inner wall of the device shell is equipped with vertical tooth plate, the device shell is divided into first crushing chamber, second crushing chamber, third crushing chamber and discharge chamber, the first crushing chamber, second crushing chamber and third crushing chamber, the top of the first crushing chamber is fixedly connected with inlet, first sieve piece is fixedly installed between the first crushing chamber and second crushing chamber.The multistage crushing chamber of the present application is set, ensure that the material of multiple different densities is mixed in discharge chamber in turn after being crushed, improve the crushing efficiency, and the mixing degree of crushing product is higher and more uniform;Using the backflow pipe connected with the upper level, guide material backflow and form high-speed self-impact between upper level material, so that the crushing efficiency of the device is further improved.

Description

Technical Field

[0001] This invention relates to the technical field of pig feed processing and grinding equipment, specifically a multi-stage micro-grinding and grinding device for pig feed processing. Background Technology

[0002] The grinding and milling process is a core part of pig feed production. It is the core means of releasing nutritional potential through physical processing. The grinding and milling process improves the digestibility and utilization rate of pig feed by 20-35% through three major mechanisms: destroying the cell structure of raw materials, increasing the specific surface area, and improving the uniformity of mixing.

[0003] Existing feed grinding equipment often lacks a screening mechanism, preventing the separation of feed particles. This results in smaller particles being ground together with larger ones, leading to incomplete grinding of larger particles and increased grinding time for smaller ones. To address this issue, Chinese Patent CN202110738354.6 discloses an integrated pig feed grinding and drying processing equipment. This patent, through the design of a corresponding mechanism on the feed grinding equipment, enables the screening of feed particles, distinguishing between larger and smaller particles. This significantly improves the grinding degree of larger particles while avoiding excessively long grinding times for smaller particles.

[0004] The aforementioned existing technology uses a screening-then-crushing method to fully crush large feed particles. However, it does not take into account that pigs, as omnivores, have a wide variety of mixed feed ingredients. Different green ingredients, grain ingredients, and protein ingredients have different densities and degrees of fragility. Therefore, although the feed is screened before being fed into the crushing equipment, the difference in crushing efficiency due to the different fragility and density of each ingredient results in a certain degree of particle unevenness in the final feed. Summary of the Invention

[0005] In view of the shortcomings of existing pig feed grinding and pulverizing devices mentioned in the background art, the present invention provides a multi-stage micro-grinding and pulverizing device for pig feed processing, which has the advantages of high finished product mixing degree and high grinding efficiency, and solves the technical problems mentioned in the background art.

[0006] This invention provides the following technical solution: a multi-stage micro-grinding device for pig feed processing, comprising a device shell, a support base fixedly installed at the bottom of the device shell, a vertical toothed plate provided on the inner wall of the device shell, a first grinding chamber, a second grinding chamber, a third grinding chamber, and a discharge chamber disposed inside the device shell, the first grinding chamber, the second grinding chamber, and the third grinding chamber arranged sequentially from top to bottom, a feed inlet fixedly connected to the top of the first grinding chamber, a first screen plate fixedly installed between the first grinding chamber and the second grinding chamber, a second screen plate fixedly installed between the second grinding chamber and the third grinding chamber, the discharge chamber located at the bottom of the device shell, a finished product screen plate installed on its upper side, a shaft opening provided in the middle of the first screen plate, the first return pipe, and the bottom surface of the device shell, through which a grinding main shaft is fixedly installed, a main shaft drive disk fixedly connected to the outer end of the grinding main shaft, hammer blades fixedly installed on the grinding main shaft, a motor fixedly installed on the outer side of the device shell, one end of the motor being movably connected to a transmission belt, and the transmission belt being connected to the main shaft drive disk.

[0007] Preferably, the outer casing of the device is inclined, and the diameter of the sieve hole of the first sieve plate is larger than the diameter of the sieve hole of the second sieve plate, which is larger than the diameter of the sieve hole of the finished sieve plate.

[0008] Preferably, a second reflux pipe and a first reflux pipe are fixedly installed on the top of the device housing. The bottom of the second reflux pipe is connected to the second crushing chamber, and its top is connected to the side wall of the feed inlet, forming a first impact outlet at the connection. The bottom of the second reflux pipe is connected to the third crushing chamber, and its top is connected to the second crushing chamber, forming a second impact outlet at the connection.

[0009] Preferably, the outer casing of the device is elliptical, and the first and second return pipes are spiral arc-shaped, with the arc diameter matching the major axis of the elliptical cross-section of the device casing.

[0010] Preferably, the bottom of the first reflux pipe is connected to and tangent to the front long axis end of the second grinding chamber, the bottom of the second reflux pipe is connected to and tangent to the front long axis end of the third grinding chamber, and its top end is connected to and tangent to the back long axis end of the second grinding chamber.

[0011] The present invention has the following beneficial effects: 1. By setting up a multi-stage crushing chamber, the present invention ensures that materials of different densities are mixed sequentially in the discharge chamber after crushing, thereby improving the crushing efficiency and making the crushed product more uniform and homogeneous. By using a return pipe connected to the previous stage, the material is guided to flow back and form a high-speed self-collision with the material in the previous stage, which further improves the crushing efficiency of the device.

[0012] 2. This invention sets up multi-stage crushing chambers at an angle and sets sieves with decreasing mesh size between each stage of the crushing chambers. It uses gravity to screen materials with high density and difficult crushing into different crushing chambers for multi-stage crushing. This ensures that materials of different densities are mixed sequentially in the discharge chamber after crushing, which improves crushing efficiency and results in a higher and more uniform degree of mixing of the crushed product.

[0013] 3. This invention improves crushing efficiency and reduces hammer wear by setting reflux pipes connected to the previous stage in the second and third crushing chambers respectively, and by utilizing the tangential connection point between the elliptical crushing chamber and the spiral reflux pipe to guide the material backflow and form a high-speed self-impact with the material in the previous stage. In addition, the impact generated when the refluxed material hits the material circulating in the original crushing chamber further destroys the material-air circulation layer in the crushing chamber that is not conducive to crushing efficiency, thereby further improving the crushing efficiency of the device. Attached Figure Description

[0014] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the crushing chamber structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the first grinding chamber of the present invention; Figure 5 This is a schematic diagram of the internal structure of the second grinding chamber of the present invention; Figure 6 This is a schematic diagram of the cross-sectional shape of the pulverizing chamber-return pipe of the present invention.

[0015] In the diagram: 1. Device casing; 10. Feed inlet; 11. First crushing chamber; 111. First sieve; 112. First reflux pipe; 1121. First impact outlet; 12. Second crushing chamber; 121. Second sieve; 122. Second reflux pipe; 1221. Second impact outlet; 13. Third crushing chamber; 14. Discharge chamber; 141. Finished product sieve; 142. Discharge outlet; 2. Support base; 3. Crushing main shaft; 31. Hammer blades; 32. Main shaft drive disc; 4. Motor; 41. Transmission belt. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-3A multi-stage micro-grinding device for pig feed processing includes a housing 1, which is inclined. A support base 2 is fixedly installed at the bottom of the housing 1. The inner wall of the housing 1 is provided with vertical toothed plates. The housing 1 is divided into a first grinding chamber 11, a second grinding chamber 12, a third grinding chamber 13, and a discharge chamber 14. The first grinding chamber 11, the second grinding chamber 12, and the third grinding chamber 13 are arranged sequentially from top to bottom. The top of the first grinding chamber 11 is fixedly connected to an inlet 10. A first screen plate 111 is fixedly installed between the first grinding chamber 11 and the second grinding chamber 12. A second screen plate 121 is fixedly installed between the second grinding chamber 12 and the third grinding chamber 13. The discharge chamber 14 is located at the bottom of the housing 1, and a support base 2 is fixedly installed on its upper side. The device includes a finished product sieve 141. The diameter of the sieve holes in the first sieve 111 is larger than that in the second sieve 121, which is also larger than that in the finished product sieve 141. This allows materials of different particle sizes to be dispersed sequentially into the first crushing chamber 11, the second crushing chamber 12, and the third crushing chamber 13 after crushing, resulting in higher crushing efficiency. Materials that meet the finished product particle size can fall into the discharge chamber 14 at any time. A shaft opening is provided in the middle of the first sieve 111, the first return pipe 112, and the bottom surface of the device housing 1. A crushing main shaft 3 is movably connected to the shaft opening. A main shaft drive disc 32 is fixedly connected to the outer end of the crushing main shaft 3. Hammer blades 31 are fixedly installed on the crushing main shaft 3. A motor 4 is fixedly installed on the outer side of the device housing 1. One end of the motor 4 is movably connected to a transmission belt 41, which... The transmission belt 41 connects to the main shaft drive disc 32. The motor 4 drives the hammers 31 on the crushing main shaft 3 to rotate. The raw material fed into the feed port 10 first enters the first crushing chamber 11 and is crushed by the high-speed impact of the hammers 31 and the impact of the toothed plates on the inner wall of the device housing 1. The easily crushable material that meets the finished product particle size is first discharged from the finished product screen 141 into the discharge chamber 14. Among the remaining large particles, those that meet the particle size of the first screen 111 and have a higher density preferentially enter the second crushing chamber 12. In the second crushing chamber 12, they are further crushed by the impact of the hammers 31 and the toothed plates. From there, the material that meets the finished product particle size is discharged from the finished product screen 141 in the second crushing chamber 12 into the discharge chamber 14. Again, among the remaining large particles, those that meet the particle size of the second screen 111 and have a higher density preferentially enter the second crushing chamber 12. In the second crushing chamber 12, they are further crushed by the impact of the hammers 31 and the toothed plates. Materials with a particle size of 121 and higher density preferentially enter the third grinding chamber 13, where they are further crushed by the impact of the hammers 31 and toothed plates until they meet the finished product particle size. They are then discharged from the bottom finished product screen 141 into the discharge chamber 14. This results in the finished material discharged from the finished product screens 141 in the first, second, and third grinding chambers 11 and 13 having a high proportion of the following components: low-density, easily broken wheat bran and leafy greens; medium-density, relatively easily broken grains and roots; and finally, high-density, difficult-to-break protein raw materials. These three types of materials with different densities are simultaneously mixed as they fall through the finished product screens 141 in the first, second, and third grinding chambers 11 and slide down into the discharge chamber 14.This process ensures a more uniform mixing of pulverized raw materials of different compositions, reduces the need for pre-forming mixing, improves pulverization efficiency, and minimizes mixing steps, resulting in a more homogeneous finished product.

[0018] Please see Figure 4-6 The outer shell 1 of the device is elliptical to prevent the rapid rotation of the hammers 31 during the operation of the crusher from causing the internal material to circulate. The elliptical outer shell 1 effectively crushes the material-air circulation layer formed inside, thereby improving the crushing efficiency. A second return pipe 122 and a first return pipe 112 are fixedly installed on the top of the outer shell 1. The first return pipe 112 and the second return pipe 122 are spiral arc-shaped, and the diameter of the arc is consistent with the length of the major axis of the elliptical cross-section of the outer shell 1. This allows the material circulating inside the outer shell 1 to smoothly enter the first return pipe 112 and the second return pipe 122, reducing the loss of material movement speed during return. The bottom of the first return pipe 112 is connected to and tangential to the front major axis end of the second crushing chamber 12, and its top is connected to the side wall of the feed inlet 10. A first impact outlet 1121 is formed. The high-density material ejected from the first impact outlet 1121 impacts the material fed into the feed inlet 10 and crushes it. The crushing is carried out by the self-impact between the high-density materials, which improves the crushing efficiency and reduces the wear of the hammer blades 31. The bottom of the second return pipe 122 is connected to the front long axis end of the third crushing chamber 13 and is tangent to it. Its top end is connected to the back long axis end of the second crushing chamber 12 and is tangent to it. A second impact outlet 1221 is formed at the connection. The high-density material ejected from the second impact outlet 1221 impacts the circulating material in the second crushing chamber 12 along the spiral angle. While the material is crushed by self-impact, the material-air circulation layer formed inside is further destroyed, which greatly improves the crushing efficiency of the hammer blades 31 on the material inside.

[0019] The working principle of the method of using this invention is as follows: During use, after starting the device, the material to be crushed is fed into the device through the feed inlet 10. It is initially crushed by the impact of the hammers 31 and toothed plates in the first crushing chamber 11. The elliptical outer shell 1 effectively breaks down the material-air circulation layer formed inside, thereby improving crushing efficiency. Easily crushable material that meets the finished product particle size is first discharged from the finished product screen 141 in the first crushing chamber 11 into the discharge chamber 14. Among the remaining large particles, those that meet the particle size of the first screen 111 and have a higher density preferentially fall into the second crushing chamber 12, where they are further crushed by the impact of the hammers 31 and toothed plates. From this point on, the material that meets the finished product particle size... The material is discharged from the finished product screen 141 at the second crushing chamber 12 into the discharge chamber 14. Among the remaining larger particles, those that meet the particle size of the second screen 121 and have a higher density preferentially enter the third crushing chamber 13. Thus, the composition of the finished material discharged from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12, and the third crushing chamber 13 is high in the following order: low-density, easily broken wheat bran and green leafy vegetables; medium-density, relatively easily broken grains and roots; and finally, high-density, difficult-to-break protein raw materials. Materials of different densities fall sequentially from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12, and the third crushing chamber 13. During the process of sliding down and being discharged in the discharge chamber 14, the materials are mixed simultaneously. At the same time, a portion of the higher-density material rotating in the second crushing chamber 12 circulates tangentially into the first return pipe 112 and is ejected from the first impact outlet 1121. The higher-density material ejected from the first impact outlet 1121 impacts the material fed into the inlet 10 for crushing. This crushing process utilizes the self-impact between high-density materials, improving crushing efficiency while reducing the wear of the hammer blades 31. Similarly, a portion of the higher-density material rotating in the third crushing chamber 13 circulates tangentially into the second return pipe 122 and is ejected from the second impact outlet 1221. The high-density material ejected from one point impacts the circulating material in the second crushing chamber 12 along a spiral angle, forming a self-impact crushing effect on the material while further disrupting the material-air circulation layer formed in the second crushing chamber 12. This improves the crushing efficiency of the high-density material. As the crushing operation proceeds in the three crushing chambers, materials of different densities fall sequentially from the finished product screen 141 in the first crushing chamber 11, the second crushing chamber 12, and the third crushing chamber 13 and are simultaneously mixed as they slide down and are discharged in the discharge chamber 14. This makes the raw materials of different compositions more uniformly mixed, reduces the need for mixing operations before subsequent molding, and makes the finished product of the crushed material more uniformly mixed.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage micro-grinding device for pig feed processing, comprising a device shell (1), wherein a second return pipe (122) and a first return pipe (112) are fixedly installed on the top of the device shell (1), a support base (2) is fixedly installed on the bottom of the device shell (1), and a vertical toothed plate is provided on the inner wall of the device shell (1), characterized in that: The outer casing (1) of the device is provided with a first crushing chamber (11), a second crushing chamber (12), a third crushing chamber (13), and a discharge chamber (14). The first crushing chamber (11), the second crushing chamber (12), and the third crushing chamber (13) are arranged sequentially from top to bottom. The top of the first crushing chamber (11) is fixedly connected to an inlet (10). A first screen plate (111) is fixedly installed between the first crushing chamber (11) and the second crushing chamber (12). A second screen plate (121) is fixedly installed between the second crushing chamber (12) and the third crushing chamber (13). The discharge chamber (14) is located in... At the bottom of the device housing (1), a finished product screen (141) is installed on its upper side. The first screen (111), the first return pipe (112) and the bottom surface of the device housing (1) are provided with a shaft opening, and a crushing main shaft (3) is fixedly installed through the shaft opening. The outer end of the crushing main shaft (3) is fixedly connected to a main shaft drive disk (32). Hammers (31) are fixedly installed on the crushing main shaft (3). A motor (4) is fixedly installed on the outer side of the device housing (1). One end of the motor (4) is movably connected to a transmission belt (41), and is connected to the main shaft drive disk (32) through the transmission belt (41). The bottom of the first return pipe (112) is connected to the second crushing chamber (12), and its top is connected to the side wall of the feed inlet (10), and a first impact outlet (1121) is formed at the connection. The bottom of the second return pipe (122) is connected to the third crushing chamber (13), and its top is connected to the second crushing chamber (12), and a second impact outlet (1221) is formed at the connection. The outer shell (1) of the device is elliptical, and the first return pipe (112) and the second return pipe (122) are spiral arcs, and the diameter of the arc is consistent with the length of the major axis of the elliptical cross section of the outer shell (1). The bottom of the first reflux pipe (112) is connected to and tangent to the front long axis end of the second grinding chamber (12), the bottom of the second reflux pipe (122) is connected to and tangent to the front long axis end of the third grinding chamber (13), and its top end is connected to and tangent to the back long axis end of the second grinding chamber (12).

2. The multi-stage micro-grinding and grinding device for pig feed processing according to claim 1, characterized in that: The outer casing (1) of the device is inclined, and the diameter of the sieve hole of the first sieve plate (111) is greater than the diameter of the sieve hole of the second sieve plate (121) and the diameter of the sieve hole of the finished sieve plate (141).

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