Fine crushing and pneumatic conveying device for feed raw materials

Abstract

The invention relates to the technical field of feed conveying devices, and discloses a feed raw material fine crushing pneumatic conveying device which comprises a crushing barrel shell, and a secondary screening barrel shell is fixedly mounted at the bottom end of the crushing barrel shell. By means of the crushing assembly, feed raw materials fed from the feeding pipe can be crushed again, the crushed feed can be screened through the screening net at the bottom, it can be guaranteed that the feed does not stay on the surface of the screening net while being screened through the trumpet-shaped structure of the screening net, and therefore the blocking condition is avoided; and the top ends of the spiral guiding and conveying pieces rotate around the circular track under the action of air flow, so that all feed raw materials which do not reach the crushing standard can move upwards under the rotation action of the spiral guiding and conveying pieces, and finally are discharged again from the top ends and enter the crushing assembly to be crushed again.

Description

Technical Field

[0001] The present invention relates to the technical field of feed conveying devices, and particularly to a refined crushing and pneumatic conveying device for feed raw materials. Background Art

[0002] The feed industry is an important support for modern animal husbandry and aquaculture. Its core lies in improving the nutritional value and utilization rate of raw materials through scientific processing. In the feed processing process, raw material crushing and conveying are key links affecting product quality, energy consumption, and production efficiency. In traditional processes, raw material crushing mostly uses hammer mill, roller mill, or tooth claw type crushing equipment to reduce the particle size through mechanical impact or shearing. However, existing pneumatic conveying devices generally have the following problems:

[0003] On the one hand, there is no structure in the pneumatic conveying device that can perform more refined separation screening and crushing. Raw material particles that do not meet the crushing standard mixed in the front-end conveying process will be directly sent to the final collection equipment, resulting in low reliability of the produced feed quality. On the other hand, existing pneumatic conveying devices cannot effectively screen the feed raw materials after front-end crushing, and it is very easy to cause blockage using existing screening structures, requiring frequent maintenance and repair to ensure the screening effect. Moreover, existing pneumatic conveying devices cannot effectively collect a large amount of dust generated during feed production due to crushing, resulting in serious dust leakage, polluting the environment and causing waste of raw materials, making the overall use effect of existing pneumatic conveying devices low. For this reason, we propose a refined crushing and pneumatic conveying device for feed raw materials. Summary of the Invention

[0004] The present invention provides a refined crushing and pneumatic conveying device for feed raw materials, which has the advantages of good crushing effect, effective separation of different particle sizes, and good dust control effect, and solves the problems raised in the above background art.

[0005] The present invention provides the following technical solution: A refined crushing and pneumatic conveying device for feed raw materials, including a crushing cylinder shell, a secondary screening cylinder shell is fixedly installed at the bottom end of the crushing cylinder shell, a collection cylinder shell is fixedly installed at the bottom end of the secondary screening cylinder shell, a crushing component is arranged inside the crushing cylinder shell, a secondary screening component is arranged inside the secondary screening cylinder shell, a secondary shaft rod is fixedly installed at the bottom end of the crushing component, an inner slot is opened inside the secondary shaft rod, a transmission component is arranged inside the inner slot, a scraping component is arranged on the secondary shaft rod, and a driving component is arranged inside the collection cylinder shell;

[0006] The crushing assembly includes a driving motor, a main shaft rod is fixedly installed on the output shaft of the driving motor, moving blades are circumferentially and uniformly fixedly installed on the outer surface of the main shaft rod, a screening net is movably installed at the bottom end of the main shaft rod, an air outlet ring is fixedly installed at the bottom end of the screening net, a ring cylinder is fixedly installed on the upper surface of the air outlet ring, fixed blades are circumferentially and uniformly fixedly installed on the inner surface of the ring cylinder, a spiral conveying sheet is movably installed on the outer surface of the ring cylinder, and a suspension head is fixedly connected to the top end of the spiral conveying sheet;

[0007] The secondary screening assembly includes an outer separation cylinder, an inner screening cylinder is fixedly installed inside the outer separation cylinder, a first discharge sealing plate is movably installed at the bottom end of the outer separation cylinder, and a toothed ring is fixedly arranged on the lower surface of the outer separation cylinder.

[0008] In a preferred embodiment, a feed pipe is fixedly connected through the top end of the crushing cylinder shell, a dust discharge pipe is fixedly installed through the side surface of the secondary screening cylinder shell, and support legs are fixedly installed at the bottom end of the collection cylinder shell.

[0009] In a preferred embodiment, a ring track is fixedly installed at the top end inside the crushing cylinder shell through a suspension rod, an air inlet ring is fixedly installed below the inner part of the crushing cylinder shell, an aggregation ring is fixedly installed at the top end inside the secondary screening cylinder shell, two support ring plates are installed at intervals between the bottom end inside the secondary screening cylinder shell and the collection cylinder shell, a convex seat is fixedly installed at the bottom end inside the collection cylinder shell, a second discharge sealing plate is movably installed at the bottom end of the collection cylinder shell, and the convex seat is arranged in a convex platform structure and its edge coincides with the inner side of the second discharge sealing plate.

[0010] In a preferred embodiment, the driving motor is fixedly installed in the middle of the top end of the crushing cylinder shell, the feed pipe is installed through the crushing cylinder shell on the side of the driving motor, a vertical scraper is arranged at the bottom end of the moving blade, the bottom end of the vertical scraper of the moving blade is at the same height as the upper surface of the fixed blade, the screening net is arranged in an inverted trumpet shape, and its bottom end is fixedly installed inside the crushing cylinder shell.

[0011] In a preferred embodiment, ventilation holes penetrating the upper surface are formed in the air outlet ring, and the upper end opening of the ventilation holes is larger than the lower end opening. A gas collection ring is installed at the bottom end of the air outlet ring and is hermetically connected to an external gas supply device in a penetrating manner. The height of the top end of the ring cylinder is less than the height of the top end of the spiral conveying sheet. A roller is arranged at the bottom end of the suspension head, a guide rail is formed on the upper surface of the ring track along the moving track of the suspension head, and the suspension head moves in the guide rail.

[0012] In a preferred embodiment, the upper and lower ends of the outer separation cylinder are rotatably arranged between two supporting ring plates, the outer surface of the inner screening cylinder is spaced apart from the inner surface of the outer separation cylinder, and discharge grooves are evenly spaced apart on the side of the outer separation cylinder. The discharge groove of the outer separation cylinder is fitted against the inner surface of the secondary screening cylinder shell and is connected to the dust discharge pipe, and the dust discharge pipe is externally connected to a negative pressure suction device.

[0013] In a preferred embodiment, the first discharge sealing plate is rotatably arranged at the bottom end of the spacing area formed by the outer separation cylinder and the inner screening cylinder, and the two sides of the first discharge sealing plate are arranged by pin shafts with coil springs sleeved thereon, and the gear ring is arranged on the lower surface of the middle part of the outer separation cylinder and aligned with the top end of the transmission assembly.

[0014] In a preferred embodiment, the transmission assembly includes an inner rod body, an outer support ring is fixedly installed on the bottom end of the inner rod body, a support ring is fixedly installed on the upper side of the outer support ring, a transmission ring is fixedly installed on the top of the outer support ring, the top of the inner rod body is slidably arranged in the inner notch, and protruding limit grooves are provided on both sides of the top of the inner notch and the length is less than one tenth of the overall length of the inner rod body, an adaptive convex strip is provided on the top of the inner rod body, the outer support ring is circumferentially arranged around the inner rod body, the support ring is fixedly installed between multiple outer support rings, and a tooth groove is provided on the upper surface of the transmission ring, and the transmission ring can be docked with the tooth ring.

[0015] In a preferred embodiment, the scraping assembly includes an outer ring cylinder, a ring wheel is fixedly installed on the top side of the outer ring cylinder through an extension rod, a top plate is fixedly installed on the lower surface of the ring wheel, and a base ring is fixedly installed on the bottom end of the outer ring cylinder. The number of the top plates is the same as the number of the first discharge sealing plates and are arranged at corresponding positions. The base ring is also located on the outside of the secondary shaft and is arranged between the support ring and the transmission ring. The outer diameter of the base ring is larger than the inner diameter of the support ring and the transmission ring.

[0016] In a preferred embodiment, the drive assembly includes a cross bar, an electric push rod is fixedly installed at the bottom of one end of the cross bar, a transmission block is fixedly installed at the bottom end of the electric push rod, the other end of the cross bar is fixedly installed to the inner surface of the collecting cylinder shell, the bottom end of the electric push rod is at the same height as the bottom end of the inner rod body, and the transmission block is fixedly installed to the bottom end of the inner rod body.

[0017] The present invention has the following beneficial effects:

[0018] 1. The refined crushing and pneumatic conveying device for feed raw materials is provided with a crushing component inside the crushing cylinder shell. By using the crushing component, not only can the feed raw materials fed from the feed pipe be crushed again, but the crushed feed can also be screened through the screening net at the bottom. The trumpet-shaped structure of the screening net can ensure that the feed does not stay on its surface during screening, thus avoiding blockage. At the same time, the feed rolls onto the side air outlet ring, and with the continuous upward blowing of the air system connected to the air inlet ring, the feed that does not meet the crushing requirements is lifted upward and re-enters. Under the action of the air flow, the top of the spiral guide blade rotates around the ring track. During the rotation process, it simultaneously bears the lifted feed raw materials, and the bottom end of the spiral guide blade also shovels up the feed remaining on the upper surface of the air outlet ring, thereby ensuring that all feed raw materials that do not meet the crushing standard can move upward under the rotation of the spiral guide blade and finally be discharged from the top and re-enter the crushing component for further crushing, thus ensuring the refined crushing of the feed raw materials.

[0019] 2. The refined crushing and pneumatic conveying device for feed raw materials is provided with a secondary screening component for secondary screening of feed raw materials inside the secondary screening cylinder shell and the collection cylinder shell in coordination. By using the rotation of the top main shaft rod to drive the secondary shaft rod to rotate and combining with the design of the bottom transmission component, when rotational centrifugal separation is required, the secondary screening component can be driven to rotate, and when the fine feed that has been screened and accumulated needs to be scraped off, the transmission component can be separated from the secondary screening component, thereby causing the secondary screening component to stop rotating. And during the separation stage of the two, the separation action can drive the scraping component to move downward inside the secondary screening component to scrape, thereby collecting the fine feed separated on the inner wall and discharging it after opening the second discharge sealing plate at the bottom when a certain amount is collected. This enables the entire device not only to improve the screening effect of the feed raw materials but also to ensure the smooth operation of the device, avoiding the situation where the use efficiency of the device is reduced due to frequent shutdowns. The fine dust separated can be centrally collected and adsorbed by the centrifugal force generated by rotation in combination with the negative pressure device externally connected to the dust discharge pipe, greatly reducing the dust content in the feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is the second three-dimensional structural schematic diagram of the present invention;

[0022] Figure 3 is the sectional three-dimensional structural schematic diagram of the present invention;

[0023] Figure 4 is the first internal partial three-dimensional structural schematic diagram of the present invention;

[0024] Figure 5 Schematic diagram of the second internal partial three-dimensional structure of the present invention;

[0025] Figure 6 Schematic diagram of the three-dimensional structure of the spiral conveying sheet and the ring track connection of the present invention;

[0026] Figure 7 Schematic diagram of the third internal partial three-dimensional structure of the present invention;

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the connection between the secondary screening assembly and the scraping assembly of the present invention;

[0028] Figure 9 For the present invention Figure 3 Schematic diagram of the enlarged structure at position A in the present invention;

[0029] Figure 10 For the present invention Figure 8 Schematic diagram of the upward view three-dimensional structure;

[0030] Figure 11 Schematic diagram of the three-dimensional structure of the main shaft rod and the moving blade of the present invention;

[0031] Figure 12 Schematic diagram of the three-dimensional structure of the connection between the transmission assembly, the scraping assembly and the driving assembly of the present invention.

[0032] In the figure: 1. Crushing cylinder shell; 2. Secondary screening cylinder shell; 3. Collection cylinder shell; 4. Support leg; 5. Dust discharge pipe; 6. Feed pipe; 7. Crushing assembly; 71. Driving motor; 72. Main shaft rod; 73. Moving blade; 74. Screening net; 75. Air outlet ring; 76. Ring cylinder; 77. Fixed blade; 78. Spiral conveying sheet; 79. Suspension head; 8. Ring track; 9. Air inlet ring; 10. Aggregation ring; 11. Support ring plate; 12. Secondary screening assembly; 121. Outer separation cylinder; 122. Inner screening cylinder; 123. First discharge sealing plate; 124. Tooth ring; 13. Auxiliary shaft rod; 14. Inner notch; 15. Transmission assembly; 151. Inner rod body; 152. Outer support ring; 153. Support ring; 154. Transmission ring; 16. Scraping assembly; 161. Outer ring cylinder; 162. Ring wheel; 163. Top plate; 164. Base ring; 17. Driving assembly; 171. Cross bar; 172. Electric push rod; 173. Transmission block; 18. Convex seat; 19. Second discharge sealing plate. Detailed implementation manners

[0033] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative, and the fine crushing and pneumatic conveying device for feed raw materials involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] Please refer to Figures 1-6 , a fine crushing and pneumatic conveying device for feed raw materials, comprising a crushing cylinder shell 1, a secondary screening cylinder shell 2 is fixedly installed at the bottom end of the crushing cylinder shell 1, a collection cylinder shell 3 is fixedly installed at the bottom end of the secondary screening cylinder shell 2, a support leg 4 is fixedly installed at the bottom end of the collection cylinder shell 3, a dust discharge pipe 5 is fixedly installed through the side of the secondary screening cylinder shell 2, a feed pipe 6 is fixedly connected through the top end of the crushing cylinder shell 1, a crushing assembly 7 is arranged inside the crushing cylinder shell 1, an annular track 8 is fixedly installed at the inner top end of the crushing cylinder shell 1 through a suspension rod, an air inlet ring 9 is fixedly installed below the inner part of the crushing cylinder shell 1, an aggregation ring 10 is fixedly installed at the inner top end of the secondary screening cylinder shell 2, two support ring plates 11 are installed at intervals between the inner bottom end of the secondary screening cylinder shell 2 and the collection cylinder shell 3, a secondary screening assembly 12 is arranged inside the secondary screening cylinder shell 2, a secondary shaft rod 13 is fixedly installed at the bottom end of the crushing assembly 7, an inner notch 14 is opened inside the secondary shaft rod 13, a transmission assembly 15 is arranged inside the inner notch 14, a scraping assembly 16 is arranged on the secondary shaft rod 13, a driving assembly 17 is arranged inside the collection cylinder shell 3, a convex seat 18 is fixedly installed at the inner bottom end of the collection cylinder shell 3, a second discharge sealing plate 19 is movably installed at the bottom end of the collection cylinder shell 3, and the convex seat 18 is arranged in a convex platform structure and the edge coincides with the inner side of the second discharge sealing plate 19;

[0035] Compared with the prior art, in the present application, a crushing assembly 7 is provided inside the crushing cylinder shell 1. By using the crushing assembly 7, not only can the feed raw materials fed from the feed pipe 6 be crushed again, but also the crushed feed can be screened through the screening mesh 74 at the bottom. The structure of the screening mesh 74 in a horn shape can ensure that the feed does not stay on its surface during screening, thus avoiding the occurrence of blockage. At the same time, the feed rolls onto the side air outlet ring 75, and with the continuous upward blowing of the air system externally connected to the air inlet ring 9, the feed that does not meet the crushing requirements is lifted upwards and re-enters. Under the action of the air flow, the top of the spiral guiding piece 78 rotates around the ring track 8, and during the rotation process, it also bears the lifted feed raw materials. Moreover, the bottom end of the spiral guiding piece 78 will shovel up the feed remaining on the upper surface of the air outlet ring 75, so as to ensure that all the feed raw materials that do not meet the crushing standard can move upwards under the rotation of the spiral guiding piece 78 and finally be discharged from the top and re-enter the crushing assembly 7 for crushing again, thus ensuring the fine crushing of the feed raw materials. At the same time, a secondary screening assembly 12 for secondary screening of the feed raw materials is collaboratively provided inside the secondary screening cylinder shell 2 and the collection cylinder shell 3. By using the rotation of the top main shaft rod 72 to drive the rotation of the secondary shaft rod 13 and combining with the design of the bottom transmission assembly 15, the secondary screening assembly 12 can be driven to rotate when centrifugal separation is required, and when the fine feed that has been screened and accumulated needs to be scraped off, the transmission assembly 15 can be separated from the secondary screening assembly 12, so that the secondary screening assembly 12 stops rotating, and the separation action during the separation stage can drive the scraping assembly 16 to move downwards inside the secondary screening assembly 12 to scrape off, thus collecting the fine feed separated from the inner wall and discharging it after opening the second discharge sealing plate 19 at the bottom when a certain amount is collected. This makes the whole device not only improve the screening effect of the feed raw materials, but also ensure the smooth operation of the device, avoiding the situation that the use efficiency of the device is reduced due to frequent shutdowns. The fine dust separated can be centrally collected and adsorbed by the centrifugal force generated by rotation combined with the negative pressure device externally connected to the dust discharge pipe 5, greatly reducing the dust content in the feed.

[0036] Please refer to Figures 1-6 , a fine crushing and pneumatic conveying device for feed raw materials, including a crushing assembly 7. The crushing assembly 7 includes a driving motor 71. The output shaft of the driving motor 71 is fixedly installed with a main shaft rod 72. The outer surface of the main shaft rod 72 is circumferentially and evenly fixedly installed with moving blades 73. The bottom end of the main shaft rod 72 is movably installed with a screening mesh 74. The bottom end of the screening mesh 74 is fixedly installed with an air outlet ring 75. The upper surface of the air outlet ring 75 is fixedly installed with a ring cylinder 76. The inner surface of the ring cylinder 76 is circumferentially and evenly fixedly installed with fixed blades 77. The outer surface of the ring cylinder 76 is movably installed with a spiral guiding piece 78. The top end of the spiral guiding piece 78 is fixedly connected with a suspension head 79;

[0037] In this embodiment, it should be noted that the driving motor 71 is fixedly installed in the middle of the top of the crushing cylinder shell 1. The feed pipe 6 is installed on the side of the driving motor 71 and penetrates through the crushing cylinder shell 1. A vertical scraper is provided at the bottom end of the moving blade 73. The bottom end of the vertical scraper of the moving blade 73 is set at the same height as the upper surface of the fixed blade 77. The screening mesh 74 is arranged in an inverted horn shape, and its bottom end is fixedly installed inside the crushing cylinder shell 1. The air outlet ring 75 is provided with air vent holes penetrating its upper surface, and the upper end opening of the air vent holes is larger than the lower end opening. A gas collecting ring is installed at the bottom end of the air outlet ring 75, and the gas collecting ring is hermetically connected to the external air supply device. The height of the top end of the annular cylinder 76 is less than the height of the top end of the spiral conveying blade 78. A roller is provided at the bottom end of the suspension head 79. A guide rail is provided on the upper surface of the ring rail 8 along the moving track of the suspension head 79. The suspension head 79 moves in the guide rail. In this way, the external air supply device supplies air to the air outlet ring 75, so that the top end of the air outlet ring 75 discharges air, blowing up the feed raw materials that roll down and are screened from the screening mesh 74. At the same time, the upward air flow can also continuously apply a rotational driving force to the spiral conveying blade 78, driving the spiral conveying blade 78 to rotate. As a result, the bottom end of the spiral conveying blade 78 rotates and scrapes on the upper surface of the air outlet ring 75, cleaning the feed remaining on its upper surface. Under the rotational action of the spiral conveying blade 78, the feed will gradually be conveyed to the top end and re-enter the inside of the annular cylinder 76, and then the moving blade 73 and the fixed blade 77 are used for secondary crushing, ensuring the crushing effect of the feed raw materials.

[0038] Please refer to Figures 3-10 , a refined crushing and pneumatic conveying device for feed raw materials, including a secondary screening assembly 12. The secondary screening assembly 12 includes an outer separation cylinder 121. An inner screening cylinder 122 is fixedly installed inside the outer separation cylinder 121. A first discharge sealing plate 123 is movably installed at the bottom end of the outer separation cylinder 121. A toothed ring 124 is fixedly arranged on the lower surface of the outer separation cylinder 121;

[0039] In the present embodiment, it should be noted that the upper and lower ends of the outer separation cylinder 121 are rotatably arranged between the two supporting ring plates 11, the outer surface of the inner screening cylinder 122 is spaced apart from the inner surface of the outer separation cylinder 121, and the side surfaces of the outer separation cylinder 121 are evenly spaced apart with discharge grooves, the discharge groove of the outer separation cylinder 121 is fitted between the inner surface of the secondary screening cylinder shell 2 and is connected to the dust discharge pipe 5, the dust discharge pipe 5 is externally connected to a negative pressure suction device, the first discharge sealing plate 123 is rotatably arranged at the bottom end of the spacing area formed by the outer separation cylinder 121 and the inner screening cylinder 122, and the two sides of the first discharge sealing plate 123 are arranged by pins with coil springs sleeved thereon, and the gear ring 124 is positioned The top of the transmission assembly 15 is aligned with the lower surface of the middle part of the outer separation cylinder 121, so that the secondary shaft 13 can be used to drive the transmission assembly 15 to rotate. Through the clamping arrangement of the top of the transmission assembly 15 and the gear ring 124, the outer separation cylinder 121 and the inner screening cylinder 122 can be driven to rotate in the support ring plate 11, thereby realizing secondary screening of the feed that falls into it, and the fine dust particles are screened to the inner surface of the outer separation cylinder 121 through the inner screening cylinder 122, and are finally discharged from the dust discharge pipe 5 through rotation and sucked out by the external negative pressure suction device, thereby avoiding dust leakage to the greatest extent, ensuring the cleanliness of the environment and avoiding waste of raw materials.

[0040] See also Figures 3-9 A feed raw material fine crushing wind conveying device includes a transmission assembly 15, the transmission assembly 15 includes an inner rod body 151, an outer support ring 152 is fixedly installed at the bottom end of the inner rod body 151, a support ring 153 is fixedly installed on one side above the outer support ring 152, and a transmission ring 154 is fixedly installed on the top of the outer support ring 152;

[0041] In this embodiment, it should be noted that the top end of the inner rod body 151 is slidably arranged in the inner notch 14, and protruding limit grooves are provided on both sides of the top of the inner notch 14, and the length is less than one tenth of the overall length of the inner rod body 151. The top end of the inner rod body 151 is provided with an adaptive convex strip, and the outer support ring 152 is circumferentially arranged around the inner rod body 151. The support ring 153 is fixedly installed between multiple outer support rings 152, and the upper surface of the transmission ring 154 is provided with a tooth groove, and the transmission ring 154 can be connected with the tooth ring 124. In this way, the drive assembly 17 can be used to drive The movable inner rod body 151 moves downward in the inner groove 14. After moving downward, the top end of the inner rod body 151 loses the transmission of the driving force to the secondary shaft 13, and the transmission ring 154 is separated from the gear ring 124, so that the secondary screening component 12 as a whole gradually stops rotating. In the process of movement of the inner rod body 151, the transmission ring 154 will also drive the scraper component 16 to move downward in the secondary screening component 12 when it moves downward, so as to realize the collection of the feed separated from the inner surface of the inner screening cylinder 122, and finally push the first discharge sealing plate 123 open and discharge downward.

[0042] Please refer to Figures 3-12 , a fine crushing and pneumatic conveying device for feed raw materials, including a scraping component 16. The scraping component 16 includes an outer ring cylinder 161. The top side of the outer ring cylinder 161 is fixedly installed with a ring wheel 162 through an extension rod. The lower surface of the ring wheel 162 is fixedly installed with a top plate 163. The bottom end of the outer ring cylinder 161 is fixedly installed with a base ring 164;

[0043] In this embodiment, it should be noted that the outer ring cylinder 161 is movably sleeved outside the secondary shaft rod 13. The ring wheel 162 is arranged in close contact inside the inner screening cylinder 122. The number of the top plates 163 is the same as that of the first discharge sealing plates 123 and is arranged at corresponding positions. The base ring 164 is also sleeved outside the secondary shaft rod 13 and is arranged between the support ring 153 and the transmission ring 154. The outer diameter of the base ring 164 is larger than the inner diameters of the support ring 153 and the transmission ring 154. In this way, when the transmission ring 154 moves downward, it can push the base ring 164, and then drive the ring wheel 162 to move downward on the inner surface of the inner screening cylinder 122, scrape down the feed sieved on its surface, and finally use the top plate 163 to push the first discharge sealing plate 123 downward, so as to discharge the feed into the bottom collecting cylinder shell 3. When the scraping component 16 is in the upper position as a whole, the support ring 153 can form a support for its whole, ensuring the flexibility of the use of the scraping component 16.

[0044] Please refer to Figures 4-12 , a fine crushing and pneumatic conveying device for feed raw materials, including a driving component 17. The driving component 17 includes a cross bar 171. One end bottom of the cross bar 171 is fixedly installed with an electric push rod 172. The bottom end of the electric push rod 172 is fixedly installed with a transmission block 173;

[0045] In this embodiment, it should be noted that the other end of the cross bar 171 is fixedly installed on the inner surface of the collecting cylinder shell 3. The bottom end of the electric push rod 172 is at the same height as the bottom end of the inner rod body 151. The transmission block 173 is fixedly installed with the bottom end of the inner rod body 151. In this way, the telescopic movement of the electric push rod 172 can realize the overall vertical driving movement of the transmission component 15, and then control the transmission of the driving force of the secondary shaft rod 13 and discharge the separated and sieved feed, so that the whole pneumatic conveying device can well carry out fine separation treatment and conveying of the feed.

[0046] Working principle: Feed raw materials are conveyed from the feed pipe 6 to the inside of the annular cylinder 76. The driving motor 71 is used to drive the main shaft rod 72 to rotate. Then, under the action of the moving blade 73 and the fixed blade 77, the feed is crushed. The crushed feed falls onto the upper surface of the screening mesh 74 for screening. The screened feed will fall above the air outlet ring 75. The external air supply device supplies air into the air outlet ring 75. Then, the screened feed will be lifted by the blowing of the air flow. At the same time, the air flow will also drive the spiral guiding sheet 78 to rotate, and then continuously convey the feed upward again. After that, it re-enters the inside of the annular cylinder 76 to be crushed again until the requirements are met. The screened feed falls onto the collecting ring 10 for conduction, and then enters the bottom end of the outer separation cylinder 121. The auxiliary shaft rod 13 drives the overall rotation of the secondary screening assembly 12 through the clamping connection of the inner rod body 151, the transmission ring 154 and the gear ring 124. In this way, through the secondary screening of the inner screening cylinder 122, the fine feed particles remain on the inner surface of the inner screening cylinder 122, while the dust particles screened by the inner screening cylinder 122 are thrown out when passing through the dust discharge pipe 5 during the rotation process. When it is necessary to clean the fine feed on the inner surface of the inner screening cylinder 122, the electric push rod 172 extends, causing the inner rod body 151 to move downward in the inner notch 14. The outer support ring 152 will drive the support ring 153 and the transmission ring 154 to move downward. Then, the outer ring cylinder 161 is driven to move downward through the base ring 164. The outer ring cylinder 161 will drive the ring wheel 162 to move downward on the inner surface of the inner screening cylinder 122 while scraping the fine feed. Finally, the top plate 163 pushes open the first discharge sealing plate 123 to discharge the fine feed onto the upper surface of the inner bottom convex seat 18 of the collecting cylinder shell 3. Finally, the second discharge sealing plate 19 is opened to collect the fine feed.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refined crushing and pneumatic conveying device for feed raw materials, comprising a crushing cylinder shell (1), characterized in that: The bottom end of the crushing cylinder shell (1) is fixedly installed with a secondary screening cylinder shell (2), the bottom end of the secondary screening cylinder shell (2) is fixedly installed with a collection cylinder shell (3), a crushing component (7) is arranged inside the crushing cylinder shell (1), a secondary screening component (12) is arranged inside the secondary screening cylinder shell (2), a secondary shaft rod (13) is fixedly installed at the bottom end of the crushing component (7), an inner notch (14) is opened inside the secondary shaft rod (13), a transmission component (15) is arranged inside the inner notch (14), a scraping component (16) is arranged on the secondary shaft rod (13), and a driving component (17) is arranged inside the collection cylinder shell (3); The crushing component (7) includes a driving motor (71), the output shaft of the driving motor (71) is fixedly installed with a main shaft rod (72), moving blades (73) are fixedly installed on the outer surface of the main shaft rod (72) circumferentially and evenly, a screening net (74) is movably installed at the bottom end of the main shaft rod (72), an air outlet ring (75) is fixedly installed at the bottom end of the screening net (74), a ring cylinder (76) is fixedly installed on the upper surface of the air outlet ring (75), fixed blades (77) are fixedly installed on the inner surface of the ring cylinder (76) circumferentially and evenly, a spiral conveying sheet (78) is movably installed on the outer surface of the ring cylinder (76), and the top end of the spiral conveying sheet (78) is fixedly connected with a suspension head (79); The secondary screening component (12) includes an outer separation cylinder (121), an inner screening cylinder (122) is fixedly installed inside the outer separation cylinder (121), a first discharge sealing plate (123) is movably installed at the bottom end of the outer separation cylinder (121), and a gear ring (124) is fixedly arranged on the lower surface of the outer separation cylinder (121).

2. The refined crushing and pneumatic conveying device for feed raw materials according to claim 1, wherein: The top end of the crushing cylinder shell (1) is fixedly connected through penetration with a feed pipe (6), a dust discharge pipe (5) is fixedly installed through penetration on the side surface of the secondary screening cylinder shell (2), and a support leg (4) is fixedly installed at the bottom end of the collection cylinder shell (3).

3. The refined crushing and pneumatic conveying device for feed raw materials according to claim 2, wherein: An annular track (8) is fixedly installed at the inner top end of the crushing cylinder shell (1) through a suspension rod, an air inlet ring (9) is fixedly installed at the inner lower part of the crushing cylinder shell (1), an aggregation ring (10) is fixedly installed at the inner top end of the secondary screening cylinder shell (2), two support ring plates (11) are installed at intervals between the inner bottom end of the secondary screening cylinder shell (2) and the collection cylinder shell (3), a convex seat (18) is fixedly installed at the inner bottom end of the collection cylinder shell (3), a second discharge sealing plate (19) is movably installed at the bottom end of the collection cylinder shell (3), and the convex seat (18) is arranged in a convex platform structure and its edge coincides with the inner side of the second discharge sealing plate (19).

4. The refined crushing and pneumatic conveying device for feed raw materials according to claim 2, wherein: The driving motor (71) is fixedly installed at the middle of the top end of the crushing shell (1); the feeding pipe (6) is installed on the side of the driving motor (71) and is through-mounted on the crushing shell (1); a vertical scraper is provided at the bottom end of the movable blade (73); the bottom end of the vertical scraper of the movable blade (73) and the upper surface of the fixed blade (77) are arranged at the same height; the screening net (74) is arranged in an inverted trumpet shape, and its bottom end is fixedly installed inside the crushing shell (1).

5. The refined crushing and pneumatic conveying device for feed raw materials according to claim 3, wherein: The air outlet ring (75) is provided with an air vent which penetrates its upper surface, and the upper opening of the air vent is larger than the lower opening. The bottom end of the air outlet ring (75) is provided with an air collecting ring, and the air collecting ring is sealed and connected to an external air supply device. The top end of the ring tube (76) is located at a height less than the top end height of the spiral guide plate (78). The bottom end of the suspension head (79) is provided with a roller. The upper surface of the ring rail (8) is provided with a guide rail located on the track where the suspension head (79) rotates, and the suspension head (79) moves in the guide rail.

6. The fine crushing and pneumatic conveying device for feed raw materials according to claim 3, characterized in that: The upper and lower ends of the outer separation cylinder (121) are rotatably arranged between two supporting ring plates (11); the outer surface of the inner screening cylinder (122) is spaced apart from the inner surface of the outer separation cylinder (121); discharge grooves are evenly spaced apart on the side surface of the outer separation cylinder (121); the discharge groove of the outer separation cylinder (121) is fitted against the inner surface of the secondary screening cylinder shell (2) and is connected to the dust discharge pipe (5); and the dust discharge pipe (5) is externally connected to a negative pressure suction device.

7. A fine crushing and pneumatic conveying device for feed raw materials according to claim 1, characterized in that: The first discharge sealing plate (123) is rotatably arranged at the bottom end of the spacing area formed by the outer separation cylinder (121) and the inner screening cylinder (122), and the two sides of the first discharge sealing plate (123) are arranged by pin shafts with coil springs sleeved thereon, and the gear ring (124) is arranged on the lower surface of the middle part of the outer separation cylinder (121) and is aligned with the top end of the transmission assembly (15).

8. A refined crushing and pneumatic conveying device for feed raw materials according to claim 1, characterized in that: The transmission assembly (15) comprises an inner rod body (151), an outer support ring (152) is fixedly mounted on the bottom end of the inner rod body (151), a support ring (153) is fixedly mounted on the upper side of the outer support ring (152), a transmission ring (154) is fixedly mounted on the top end of the outer support ring (152), the top end of the inner rod body (151) is slidably arranged in the inner notch (14), both sides of the top of the inner notch (14) are provided with protruding limit grooves, and the length of the grooves is less than one tenth of the overall length of the inner rod body (151), the top end of the inner rod body (151) is provided with an adaptive convex strip, the outer support ring (152) is circumferentially arranged around the inner rod body (151), the support ring (153) is fixedly mounted between the plurality of outer support rings (152), the upper surface of the transmission ring (154) is provided with tooth grooves, and the transmission ring (154) can be butt-jointed with the tooth ring (124).

9. The refined crushing and pneumatic conveying device for feed raw materials according to claim 8, characterized in that: The scraping assembly (16) includes an outer ring cylinder (161). The top side of the outer ring cylinder (161) is fixedly installed with a ring wheel (162) through an extension rod. The lower surface of the ring wheel (162) is fixedly installed with a top plate (163). The bottom end of the outer ring cylinder (161) is fixedly installed with a base ring (164). The number of the top plates (163) is the same as that of the first discharge sealing plates (123) and is arranged at corresponding positions. The base ring (164) is also sleeved outside the auxiliary shaft rod (13), and the base ring (164) is arranged between the supporting ring (153) and the transmission ring (154). The outer diameter of the base ring (164) is larger than the inner diameters of the supporting ring (153) and the transmission ring (154).

10. A refined crushing and pneumatic conveying device for feed raw materials according to claim 8, characterized in that: The driving assembly (17) includes a cross bar (171). One end bottom of the cross bar (171) is fixedly installed with an electric push rod (172). The bottom end of the electric push rod (172) is fixedly installed with a transmission block (173). The other end of the cross bar (171) is fixedly installed on the inner surface of the collection cylinder shell (3). The bottom end of the electric push rod (172) is at the same height as the bottom end of the inner rod body (151). The transmission block (173) is fixedly installed with the bottom end of the inner rod body (151).

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