Multi-stage micro-crushing and grinding device for pig feed processing

Abstract

The invention relates to the technical field of pig feed processing and grinding devices, and discloses a multi-stage micro-crushing and grinding device for pig feed processing, which comprises a device shell, a bracket base is fixedly mounted at the bottom of the device shell, and a vertical toothed plate is arranged on the inner wall of the device shell. The device shell is internally provided with a first crushing chamber, a second crushing chamber, a third crushing chamber and a discharging chamber, the first crushing chamber, the second crushing chamber and the third crushing chamber are arranged, the top end of the first crushing chamber is fixedly connected with a feeding port, and a first screening piece is fixedly installed between the first crushing chamber and the second crushing chamber. The multi-stage crushing chamber is arranged, it is guaranteed that multiple materials with different densities are sequentially mixed in the discharging chamber after being crushed, the crushing efficiency is improved, and meanwhile the mixing degree of crushed finished products is higher and more uniform; and the backflow pipe communicated with the previous stage is used for guiding the materials to flow back and form high-speed self-collision with the materials of the previous stage, so that the crushing efficiency of the device is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of pig feed processing and grinding devices, in particular to a multi-stage micro-crushing and grinding device for pig feed processing. Background Art

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

[0003] During use, the existing feed crushing equipment lacks a corresponding screening mechanism on the crushing equipment, and cannot screen the feed put into the crushing equipment, so that smaller feed particles are crushed together with larger feed particles, resulting in incomplete crushing of larger feed particles and increased crushing time of smaller feed particles. To solve the above problems, the specification of Chinese patent CN202110738354.6 discloses an integrated processing equipment for pig feed crushing and drying. This patent sets a corresponding mechanism on the feed crushing equipment, so that the feed put into the crushing equipment can be screened, and larger feed particles can be distinguished from smaller feed particles, which greatly improves the crushing degree of larger feed particles and avoids the situation where the crushing time of smaller feed particles is too long.

[0004] The above-mentioned prior art adopts a method of screening first and then crushing to fully crush large-particle feed. However, it does not take into account that pigs, as omnivores, have a wide variety of mixed feed raw materials. Different green raw materials, grain raw materials and protein raw materials have different densities and different degrees of breakability. Therefore, although the feed is screened before being put into the crushing equipment, due to the different breakability and density of each raw material during the crushing process, the difference in crushing efficiency makes the final feed still have a certain degree of uneven particles. Summary of the Invention

[0005] In response to the shortcomings of the existing pig feed crushing and grinding device mentioned in the background technology during use, the present invention provides a multi-stage micro-crushing and grinding device for pig feed processing, which has the advantages of high finished product mixing degree and high crushing efficiency, and solves the technical problems raised in the above background technology.

[0006] The present invention provides the following technical solution: a multi-stage micro-grinding and grinding device for pig feed processing, comprising a device housing, a bracket base fixedly installed at the bottom of the device housing, an inner wall of the device housing provided with a vertical tooth plate, a first crushing chamber, a second crushing chamber, a third crushing chamber and a discharge chamber provided in the device housing, the first crushing chamber, the second crushing chamber and the third crushing chamber being arranged in sequence from top to bottom, a feed port fixedly connected to the top of the first crushing chamber, a first screen fixedly installed between the first crushing chamber and the second crushing chamber, a second screen fixedly installed between the second crushing chamber and the third crushing chamber, the discharge chamber being located at the bottom of the device housing, a finished product screen installed on the upper side thereof, an axis opening being opened in the middle of the first screen, the first reflux pipe and the bottom surface of the device housing, and a crushing spindle fixedly installed through the axis opening, the outer end of the crushing spindle fixedly connected to the spindle drive disk, a hammer fixedly installed on the crushing spindle, a motor fixedly installed on the outer side of the device housing, one end of the motor movably connected to a transmission belt, and connected to the spindle drive disk through the transmission belt.

[0007] Preferably, the device housing is tilted, and the sieve hole diameter of the first sieve plate is larger than the sieve hole diameter of the second sieve plate, which is larger than the sieve hole diameter of the finished product sieve plate.

[0008] Preferably, a second return pipe and a first return pipe are fixedly installed on the top of the device casing, the bottom of the second return pipe is connected to the second crushing chamber, and the top is connected to the side wall of the feed port, and a first impact outlet is formed at the connection point, the bottom of the second return pipe is connected to the third crushing chamber, and the top is connected to the second crushing chamber, and a second impact outlet is formed at the connection point.

[0009] Preferably, the device housing is elliptical, the first return pipe and the second return pipe are in the shape of a spiral arc, and the arc diameter is consistent with the length of the major axis of the elliptical cross-section of the device housing.

[0010] Preferably, the bottom of the first return pipe is connected to the front long axis end of the second crushing chamber and is tangent to it, the bottom of the second return pipe is connected to the front long axis end of the third crushing chamber and is tangent to it, and its top end is connected to the long axis end on the back side of the second crushing chamber and is tangent to it.

[0011] The present invention has the following beneficial effects: 1. The present invention sets up a multi-stage crushing chamber to ensure that materials of various densities are mixed in sequence in the discharge chamber after being crushed, thereby improving the crushing efficiency and making the mixing degree of the crushed products higher and more uniform; the return pipe connected to the previous stage is used to guide the material to reflux and form a high-speed self-collision with the material of the previous stage, so that the crushing efficiency of the device is further improved.

[0012] 2. The present invention arranges multi-stage crushing chambers at an angle and sets sieves with decreasing mesh size between each level of crushing chambers. Gravity is used to screen the materials with high density and difficulty in crushing step by step into different crushing chambers for multi-stage crushing, thereby ensuring that materials of various densities are mixed in sequence in the discharge chamber after being crushed. This improves the crushing efficiency and makes the mixing degree of the crushed products higher and more uniform.

[0013] 3. The present invention provides return pipes connected to the upper stage in the second and third crushing chambers respectively, and utilizes the tangential connection point between the elliptical crushing chamber and the spiral return pipe to guide the material to flow back and form high-speed self-collision with the material of the upper stage, thereby improving the crushing efficiency and reducing the loss of the hammer blades. In addition, the impact generated when the return 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It 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 It 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 crushing chamber of the present invention; Figure 5 This is a schematic diagram of the internal structure of the second crushing chamber of the present invention; Figure 6 It is a schematic diagram of the cross-sectional shape of the grinding chamber-reflux pipe of the present invention.

[0015] In the figure: 1. Device casing; 10. Feed inlet; 11. First crushing chamber; 111. First screen; 112. First reflux pipe; 1121. First impact outlet; 12. Second crushing chamber; 121. Second screen; 122. Second reflux pipe; 1221. Second impact outlet; 13. Third crushing chamber; 14. Discharge chamber; 141. Finished product screen; 142. Discharge outlet; 2. Bracket base; 3. Crushing spindle; 31. Hammer; 32. Spindle drive disc; 4. Motor; 41. Transmission belt. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-3A multi-stage micro-grinding and grinding device for pig feed processing includes a device shell 1, the device shell 1 is tilted, a bracket base 2 is fixedly installed at the bottom of the device shell 1, and a vertical tooth plate is provided on the inner wall of the device shell 1. The device shell 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 in sequence from top to bottom. The top of the first grinding chamber 11 is fixedly connected to the feeding port 10, a first screen 111 is fixedly installed between the first grinding chamber 11 and the second grinding chamber 12, and a second screen 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 device shell 1, and a screen 121 is fixedly installed between the second grinding chamber 12 and the third grinding chamber 13. There is a finished product screen 141, the screen hole diameter of the first screen 111 is larger than the screen hole diameter of the second screen 121, which is larger than the screen hole diameter of the finished product screen 141, so that the materials of different particle sizes after crushing are sequentially dispersed into the first crushing chamber 11, the second crushing chamber 12 and the third crushing chamber 13, and the crushing efficiency is higher. The materials that meet the finished product particle size can fall into the discharge chamber 14 at any time. The first screen 111, the first reflux pipe 112 and the middle of the bottom surface of the device shell 1 are provided with an axis opening, and the crushing main shaft 3 is movably connected through the axis opening. The outer end of the crushing main shaft 3 is fixedly connected to the main shaft drive disk 32, and the crushing main shaft 3 is fixedly installed with a hammer 31. The outer side of the device shell 1 is fixedly installed with a motor 4, and one end of the motor 4 is movably connected to the transmission belt 41, and is connected through the motor 4. The transmission is connected to the main shaft drive disk 32 through the transmission belt 41, and the motor 4 drives the hammer 31 on the crushing main shaft 3 to rotate. The raw materials put in from the feeding port 10 first enter the first crushing chamber 11 and are crushed by the high-speed impact of the hammer 31 and the impact of the tooth plate on the inner wall of the device shell 1. The easily broken materials that meet the finished product particle size are first discharged from the finished product screen 141 to the discharge chamber 14. Among the remaining large particles, the materials that meet the particle size of the first screen 111 and have a larger density are preferentially entered into the second crushing chamber 12, and are further crushed by the impact of the hammer 31 and the tooth plate in the second crushing chamber 12. From then on, the materials that meet the finished product particle size are discharged from the finished product screen 141 at the second crushing chamber 12 to the discharge chamber 14. The material with a particle size of 121 and a larger density enters the third crushing chamber 13 first, and is further crushed by the impact of the hammer 31 and the tooth plate in the third crushing chamber 13 until it meets the finished product particle size and is discharged from the bottom finished product screen 141 to the discharge chamber 14, thereby forming the finished product materials discharged from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12 and the third crushing chamber 13. The components of the finished materials discharged from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12 and the third crushing chamber 13 are low-density and easy-to-crush green leaves of wheat bran, medium-density and easy-to-crush grain roots and finally high-density and difficult-to-crush protein raw materials. The three types of materials with different densities fall from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12 and the third crushing chamber 13 in turn, and are synchronously mixed in the process of sliding down and being discharged in the discharge chamber 14.It makes the blending of raw materials with different components more uniform, reduces the mixing operation before the later molding, improves the crushing efficiency, reduces the mixing steps, and makes the finished product more uniform.

[0018] See also Figure 4-6 The device shell 1 is elliptical, so as to avoid the phenomenon of circulation of the internal material caused by the rapid rotation of the hammer 31 during the operation of the crusher. The elliptical device shell 1 effectively crushes the material-air circulation layer formed inside, thereby improving the crushing efficiency. The second return pipe 122 and the first return pipe 112 are fixedly installed on the top of the device shell 1. The first return pipe 112 and the second return pipe 122 are spiral arc-shaped, and the arc diameter is consistent with the long axis length of the elliptical cross-section of the device shell 1, so that the material in the device shell 1 enters the first return pipe 112 and the second return pipe 122 when circulating, reducing the speed loss of the material during reflux. The bottom of the first return pipe 112 is connected to the front long axis end of the second crushing chamber 12 and is tangent to it, and its top is connected to the side wall of the feed inlet 10, and at the connection point A first impact outlet 1121 is formed, and the higher density material ejected from the first impact outlet 1121 impacts the material input from the feed port 10 to be crushed. The self-impact between the high-density materials is used for crushing, which improves the crushing efficiency while reducing the loss of the hammer 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, and its top is connected to the long axis end of the back of the second crushing chamber 12 and is tangent to it, and a second impact outlet 1221 is formed at the connection point. The high-density material ejected from the second impact outlet 1221 impacts the material circulating in the second crushing chamber 12 along a spiral angle, forming self-impact to crush the material while further destroying the material-air circulation layer formed inside, greatly improving the crushing efficiency of the hammer 31 on the internal material.

[0019] The working principle of the method of use of the present invention is as follows: During use, after starting the device, the material to be crushed is put into the device from the feed port 10, and is first crushed by the impact of the hammer 31 and the tooth plate in the first crushing chamber 11. The elliptical device shell 1 effectively crushes the material-air circulation layer formed inside, thereby improving the crushing efficiency. The easy-to-crush material that meets the finished product size is first discharged from the finished product screen 141 at the first crushing chamber 11 to the discharge chamber 14. Among the remaining large particles, the material that meets the particle size of the first screen 111 and has a larger density falls into the second crushing chamber 12 first, and is further crushed by the impact of the hammer 31 and the tooth plate in the second crushing chamber 12. The material is discharged from the finished product screen 141 at the second crushing chamber 12 to the discharge chamber 14. Among the remaining larger particles, the material that meets the particle size of the second screen 121 and has a larger density is preferentially entered into the third crushing chamber 13, thereby forming 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. The components of the finished material are low-density and easy-to-crush green leaves of wheat bran, medium-density and easy-to-crush grain roots and finally high-density and difficult-to-crush protein raw materials. Materials of different densities fall from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12 and the third crushing chamber 13 in turn. The high-density materials ejected from the first impact outlet 1121 collide with the materials fed into the feed port 10 to be crushed, and the self-impact between the high-density materials is used to crush them, thereby improving the crushing efficiency and reducing the loss of the hammer 31. Similarly, the high-density materials rotating in the third crushing chamber 13 circulate along the tangent line to the second return pipe 122 and are ejected from the second impact outlet 1221. The high-density materials ejected from the first impact outlet 1121 collide with the materials fed into the feed port 10 to be crushed. The self-impact between the high-density materials is used to crush them, thereby improving the crushing efficiency and reducing the loss of the hammer 31. Similarly, the high-density materials rotating in the third crushing chamber 13 circulate along the tangent line to the second return pipe 122 and are ejected from the second impact outlet 1221. The high-density material ejected from point 1 collides with the material circulating in the second crushing chamber 12 along a spiral angle, forming a self-impact to crush the material while further destroying the material-air circulation layer formed in the second crushing chamber 12, so that the crushing efficiency of the high-density material is improved. As the crushing operation in the three crushing chambers proceeds, materials of different densities fall from the finished product screen 141 at the first crushing chamber 11, the second crushing chamber 12 and the third crushing chamber 13 in turn and are mixed synchronously during the process of sliding down and being discharged in the discharge chamber 14, so that the raw materials of different components are blended more evenly, the mixing operation before the later molding is reduced, and the mixing of the finished products of the crushed materials is more even.

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

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

Claims

1. A multi-stage micro-grinding and grinding device for pig feed processing, comprising a device housing (1), a bracket base (2) fixedly mounted on the bottom of the device housing (1), and a vertical tooth plate provided on the inner wall of the device housing (1), characterized in that: The housing (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 in sequence from top to bottom. The top of the first crushing chamber (11) is fixedly connected to the feed port (10). A first screen (111) is fixedly installed between the first crushing chamber (11) and the second crushing chamber (12). A second screen (121) is fixedly installed between the second crushing chamber (12) and the third crushing chamber (13). The discharge chamber (14) is located at A finished product screen (141) is installed on the upper side of the bottom of the device housing (1), and an axis opening is opened in the middle of the first screen (111), the first return pipe (112) and the bottom surface of the device housing (1), and a crushing spindle (3) is fixedly installed through the axis opening, the outer end of the crushing spindle (3) is fixedly connected to the spindle drive disk (32), and a hammer (31) is fixedly installed on the crushing spindle (3), and a motor (4) is fixedly installed on the outer side of the device housing (1), and one end of the motor (4) is movably connected to a transmission belt (41), and is connected to the spindle drive disk (32) through the transmission belt (41).

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

3. The multi-stage micro-crushing and grinding device for pig feed processing according to claim 1, characterized in that: A second return pipe (122) and a first return pipe (112) are fixedly mounted on the top of the device housing (1); the bottom of the second return pipe (122) is connected to the second crushing chamber (12), and the top thereof is connected to the side wall of the feed port (10), with a first impact outlet (1121) formed at the connection point; the bottom of the second return pipe (122) is connected to the third crushing chamber (13), and the top thereof is connected to the second crushing chamber (12), with a second impact outlet (1221) formed at the connection point.

4. The multi-stage micro-crushing and grinding device for pig feed processing according to claim 1, characterized in that: The device housing (1) is elliptical, the first return pipe (112) and the second return pipe (122) are spiral arc-shaped, and the arc diameter is consistent with the length of the major axis of the elliptical cross-section of the device housing (1).

5. The multi-stage micro-crushing and grinding device for pig feed processing according to claim 1, characterized in that: The bottom of the first return pipe (112) is connected to the front long axis end of the second crushing chamber (12) and is tangent thereto, 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 thereto, and the top end is connected to the long axis end at the back of the second crushing chamber (12) and is tangent thereto.

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