Feed screening device based on live pig feeding
By using annular screening belts and dynamic screening technology, the problems of low efficiency and clogging in traditional pig feed screening devices have been solved, achieving efficient screening of multi-stage particle sizes and reducing energy consumption and equipment requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional pig feed screening devices have low screening efficiency, are prone to clogging, and cannot achieve multi-stage particle size classification in the same device. Multiple devices need to be used in series, which increases energy consumption and site costs.
An annular screening belt supported by multiple drive rollers is used. The screening belt is driven to move in a cycle by a drive device. Multiple screening areas with different screen hole sizes are set on the screening belt. Combined with a support mechanism, a tensioning mechanism and a smoothing component, dynamic screening and uniform distribution are achieved.
It improves screening efficiency, avoids clogging problems, reduces energy consumption and site costs, and enables rapid screening of multi-stage particle sizes without the need to stop the machine to replace the screen.
Smart Images
Figure CN224025590U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to feed screening technical field especially based on pig feeding feed screening device. BACKGROUND
[0002] In the pig feeding process, the quality and uniformity of feed have a vital influence on the growth performance and health condition of pigs, and the traditional feed screening device mainly relies on single screen or multi-layer fixed screen to screen, and this device has many limitations in practical application, on the one hand, its screening efficiency is low, especially when processing a large amount of feed, due to the relatively fixed vibration frequency of the screen and the material movement trajectory, the distribution of small particles and large particles on the screen is uneven, and local blockage phenomenon is prone to occur, thereby affecting the overall screening speed and effect.
[0003] On the other hand, the traditional vibrating screen realizes particle classification through high-frequency vibration, but the screen aperture is fixed, and the screen needs to be replaced to adapt to different particle size requirements, which leads to low production efficiency, in addition, although part of the annular screening belt equipment can realize continuous screening, the screening area is single, and multi-stage particle size classification cannot be completed in the same equipment, so it is necessary to additionally configure multiple equipment in series, which increases the site occupation and energy consumption cost. SUMMARY
[0004] The utility model aims at providing based on pig feeding feed screening device to solve the above -mentioned problem.
[0005] Specifically, the utility model realizes the following technical scheme:
[0006] Based on pig feeding feed screening device, including the body, form the cavity in the body inside, still include the screening belt in the cavity, and form the closed annular structure through a plurality of transmission roll support, be equipped with the material collecting bin in the closed annular structure, the belt body of screening belt is equipped with a plurality of screening areas along its length direction respectively, and the screen hole size of a plurality of screening areas is different, wherein one transmission roll is connected with the drive arrangement installed on the body, drives the transmission roll rotation through the drive arrangement, drives the screening belt rotation, makes the screening area in the moving process in turn pass above the material collecting bin, and the particle is classified and screened through the screening area of different screen hole size.
[0007] In the above scheme, the present screening device adopts a ring-shaped screening belt supported by multiple transmission rollers, and moves the screening belt in a circulating manner through a driving device, so as to continuously and dynamically screen the feed entering the machine body by utilizing the dynamic operation of the screening belt, and then the feed can be uniformly distributed on the corresponding screening area after entering the machine body along with the operation of the screening belt, thereby avoiding the problems of particle accumulation and screen hole blockage caused by fixed vibration frequency in the traditional vibrating screen. Meanwhile, in the present scheme, different screening areas with different screen hole sizes are arranged on the screening belt along the length direction of the belt body, so that when different particle sizes of feed particles need to be screened, the screening areas with different hole diameters on the screening belt can be quickly switched through the continuous operation of the screening belt, thereby the effective screening of different particle sizes of feed can be completed without stopping and replacing the screen, which significantly improves the screening efficiency of the screening device and reduces the energy consumption and site cost caused by multiple devices.
[0008] Further, a support mechanism is arranged on the upper part of the cavity to support the screening area of the screening belt located on the upper part of the aggregate bin, the support mechanism comprises a support box body, the belt body of the screening area of the screening belt located on the upper part of the aggregate bin passes through the support box body, the middle region of the upper part of the shell of the support box body is recessed to form a recessed part, and the shell of the recessed part of the support box body and the lower part of the shell of the support box body are close to the belt body part of the screening area, and corresponding rectangular windows are arranged on the shell of the recessed part of the support box body and the lower part of the shell of the support box body.
[0009] It should be understood that, in the present scheme, when the feed particles are screened by the screening belt, due to the nature of the screening belt, the screening belt may be deformed due to gravity when the feed particles fall on the screening belt. Therefore, the present scheme provides a support mechanism to effectively support the screening belt. Specifically, the upper and lower shells of the support box body are designed to closely contact the screening belt, the upper shell is recessed to form a recessed part, and the screening belt forms a stable support platform above the aggregate bin, thereby avoiding the belt body from sagging or deviating due to the gravity or inertia of the material. The recessed part and the rectangular window of the lower shell accurately correspond to the screen hole distribution of the screening area, so that the material can only pass through the screening area with the corresponding hole diameter to enter the aggregate bin, thereby avoiding the feed particles from spilling.
[0010] It should be further explained that the inside of the support box body is provided with two tensioning mechanisms on both sides, which are used to tension the belt body part of the screening area moving into the support box body. Any of the tensioning mechanisms comprises two cross-arranged tensioning rollers, which form an S-shaped structure when the belt body part of the screening belt passes through the two tensioning rollers, and a gas cylinder is arranged between any of the tensioning rollers and the support box body to push the tensioning roller to move along the length direction of the screening belt.
[0011] The tensioning mechanism (crossed tensioning rollers and air cylinders) inside the support box can dynamically adjust the tension of the screening belt, maintain the flatness of the screening belt during screening, and avoid the screening belt from being deformed due to the gravity of the feed particles, thereby reducing the local wear of the screening belt caused by uneven tension or the adverse effect on feed screening.
[0012] Specifically, a sealing strip is bonded to the inner shell of the support box and located at the periphery of each of the two rectangular windows, and the sealing strip is used to block the gap between the two rectangular windows and the belt body of the screening belt. The sealing strip is elastically fitted in the gap between the screening belt and the shell, which can effectively prevent feed particles from leaking.
[0013] As a preferred embodiment, the upper part of the collection bin is connected to the rectangular window on the lower shell of the support box through a collection port, and a flattening member is arranged inside the collection port. The flattening member includes a flattening roller connected to the collection port through a sliding mechanism at both ends. The outer roller surface of the flattening roller passes through the rectangular window on the lower shell of the support box and contacts the lower part of the screening belt inside the support box. The sliding mechanism is used to drive the flattening roller to move left and right along the length direction of the screening belt in the collection port.
[0014] It can be understood that the flattening member significantly improves the uniformity of material distribution and the screening efficiency during screening. Specifically, the flattening roller is connected to the collection port through a sliding mechanism, and the outer roller surface of the flattening roller passes through the rectangular window on the lower part of the support box and directly contacts the lower part of the screening belt, forming a dynamic flattening effect on the material layer on the screening belt. When the material is screened in the screening area of the screening belt, the flattening roller can be driven to move back and forth along the length direction of the screening belt through the sliding mechanism, so as to uniformly spread the accumulated material layer and eliminate the local thickness caused by uneven feeding or particle agglomeration. That is, the rolling and sliding compound motion of the flattening roller can adjust the thickness of the material layer in real time, ensuring that the particles enter the screening area in the form of a single layer or a thin layer, thereby maximizing the penetration efficiency of the screen hole.
[0015] More specifically, the sliding mechanism includes a slide rail arranged on the side wall opposite to the two sides of the screening belt, and a pulley slidingly arranged in the slide rail and connected to both ends of the flattening roller. One side of the pulley away from the flattening roller is connected to a push rod penetrating to the outside of the machine body, and a strip-shaped slot is formed on the outside of the machine body corresponding to the position of the push rod. The push rod can slide through the strip-shaped slot.
[0016] It should be noted that by fixing the sliding rail on the side walls on both sides of the material collecting port as described above, a stable guide path is provided for the pulley, and the pulley is connected to both ends of the smoothing wheel to ensure that the smoothing wheel can move smoothly above the screening belt, the pushing rod extends from the pulley to the outside of the machine body, and linear sliding is achieved by limiting the strip-shaped gap, this design not only simplifies the driving operation, but also avoids the risk of failure caused by complex internal transmission, that is, by manually or automatically controlling the reciprocating movement of the pushing rod, the smoothing wheel can dynamically flatten the material layer along the length direction of the screening belt, eliminating the problem of excessive local thickness caused by uneven feeding or particle accumulation, while reducing the risk of screen hole blockage, in addition, the design of the strip-shaped gap not only facilitates the operation and maintenance of the pushing rod, but also improves the sliding accuracy by limiting its movement trajectory, avoiding the deviation of the smoothing wheel from the working area.
[0017] Further, the upper part of the machine body is also provided with a feeding bin, the upper and lower ends of the feeding bin are open, the lower end opening of the feeding bin is smaller than the upper end opening, and the lower end opening of the feeding bin is matched with the size of the rectangular window on the shell of the recessed part of the support box, in this scheme, the upper end opening of the feeding bin is larger, facilitating rapid reception of a large amount of feed and reducing spillage during feeding, and the lower end opening is smaller and matched with the rectangular window on the shell of the recessed part of the support box, ensuring that the material can enter the screening area in a concentrated and uniform manner, avoiding the decrease of screening efficiency caused by dispersed or excessive feeding.
[0018] As preferred, a bin door is arranged at the position corresponding to the feeding bin on the side of the machine body.
[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0020] 1、 the utility model discloses a plurality of transmission rollers support annular screening belt, and drive device drives screening belt to move in cycle, thereby utilizing the dynamic operation of screening belt, continuously dynamically screening the feed that enters the machine body, and then making the feed realize uniform distribution on the corresponding screening area along with the operation of screening belt after entering the machine body, thereby avoiding the problems of particle accumulation and screen hole blockage caused by fixed vibration frequency of traditional vibrating screen, and different screening areas of screen hole size are arranged on the screening belt along the length direction of the belt body, so that when different particle size feed particles need to be screened, different aperture screening areas on the screening belt can be quickly switched through the continuous operation of the screening belt, thereby effectively screening different particle size feed without stopping and replacing the screen, which significantly improves the screening efficiency of the screening device and reduces energy consumption and site cost of multiple equipment.
[0021] 2. The utility model discloses a tensioning mechanism (crossed tensioning roller and air cylinder) in the supporting box body, can dynamically adjust the tension of the screening belt, maintains the flatness of the screening belt body when screening, avoids the screening belt from being deformed by the gravity of the feed particles, thereby reducing the local wear of the screening belt or the adverse effect on the feed screening caused by uneven tension;
[0022] 3. The utility model discloses a smoothing piece is set up ingeniously, screening process material distribution's uniformity and screening efficiency are improved significantly, specifically, smoothing wheel is connected with the material collecting port through sliding mechanism, and its outer roller surface passes through the rectangular window of supporting box body lower part and directly contacts the lower part of screening belt, forms the dynamic flattening effect of material layer on screening belt, when screening material in the screening area of screening belt, smoothing wheel can be driven to reciprocate along the length direction of screening belt through sliding mechanism, to realize the even spreading of the material layer that is accumulated, eliminates the local thickness that is too big caused by uneven feeding or particle agglomeration, that is, through the rolling and sliding compound motion of smoothing wheel, the material layer thickness can be adjusted in real time, ensures that the particle enters the screening area in the form of single layer or thin layer, thereby the screen hole penetration efficiency is maximized. BRIEF DESCRIPTION OF DRAWINGS
[0023] The drawings described herein are used to provide further understanding of the embodiments of the utility model, and constitute a part of the application, and do not constitute the limitation to the embodiments of the utility model. In the drawings:
[0024] Figure 1 It is the internal overall structure schematic diagram of the utility model,
[0025] Figure 2 It is the internal side view structure schematic diagram of the utility model,
[0026] Figure 3 It is the internal side view structure schematic diagram of the utility model, Figure 2 The partial enlarged structure schematic diagram of the utility model is designed to show the specific structure of sliding mechanism,
[0027] Figure 4 It is the screening belt local structure schematic diagram of the utility model and is designed to show the structure of screening belt,
[0028] Figure 5 It is the supporting box body structure schematic diagram of the utility model.
[0029] The sign represented by the figure mark is: 1, machine body, 10, feed bin, 2, screening belt, 20, screening area, 3, transmission roller, 40, supporting box body, 41, rectangular window, 42, tensioning roller, 43, air cylinder, 5, material collecting bin, 50, smoothing wheel, 51, sliding rail, 52, pulley, 53, push rod. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with examples and drawings, the schematic implementation mode and the description thereof of the utility model are only used to explain the utility model, and do not serve as the limitation of the utility model.
[0031] Embodiment:
[0032] As Figures 1 to 4 shown, the embodiment discloses a feed screening device for pig raising, which comprises a body 1, a cavity is formed in the body 1, further comprises a screening belt 2 located in the cavity and supported by a plurality of transmission rollers 3 to form a closed loop structure, a material collecting bin 5 is arranged in the closed loop structure, a plurality of screening areas 20 are arranged on the belt body of the screening belt 2 along the length direction of the belt body, and the screen hole sizes of the plurality of screening areas 20 are different, one of the transmission rollers 3 is connected with a driving device arranged on the body 1, the transmission roller 3 is driven to rotate by the driving device, the screening belt 2 is driven to rotate, and the screening areas 20 pass above the material collecting bin 5 in turn in the moving process, and the granules are classified and screened by the screening areas 20 with different screen hole sizes.
[0033] It needs to be supplemented here that for the screening belt 2, different screening areas 20 of the screening belt 2 can realize efficient multi-stage screening through differential screen hole design and position layout in specific implementation, for example, the screening belt 2 can be divided into at least three main areas along the length direction, a first area is provided with a large-aperture screen (such as an aperture of 8 mm) for preliminarily separating large particles or impurities, a second area is provided with a medium-aperture screen (such as an aperture of 4 mm) for screening feed granules with moderate particle size, and a third area is provided with a small-aperture screen (such as an aperture of 2 mm) for further separating small particles or powder, and the screen hole shape of each area can be selected as a circle, a square or a strip according to the material characteristics to optimize the penetration efficiency and classification accuracy.
[0034] In addition, the transition sections between the screening areas 20 on the screening belt 2 can be provided with smooth connection structures or flexible materials to avoid material retention or belt body abrasion caused by rigid connection, in actual operation, the screening belt 2 is driven to move circularly by the transmission roller 3, so that the materials pass through the above-mentioned areas in turn to complete the continuous classification process from coarse to fine, in order to improve the adaptability, the material of the screening belt 2 can be selected as high-strength wear-resistant polyurethane or stainless steel, so as to reduce the maintenance cost and prolong the service life of the equipment.
[0035] Based on the technical solutions disclosed in the above embodiments, this screening device adopts an annular screening belt 2 supported by multiple transmission rollers 3, and drives the screening belt 2 to move cyclically through a drive device. The dynamic operation of the screening belt 2 allows for continuous dynamic screening of the feed entering the machine body 1. This ensures that the feed is evenly distributed on the corresponding screening areas 20 after entering the machine body 1, avoiding particle accumulation and screen blockage problems caused by the fixed vibration frequency of traditional vibrating screens. Furthermore, in this solution, screening areas 20 with different screen hole sizes are set along the length of the screening belt 2. Therefore, when different particle sizes of feed need to be screened, the screening areas 20 with different hole sizes can be quickly switched through the continuous operation of the screening belt 2. This eliminates the need to stop the machine to replace the screen, effectively screening feed of different particle sizes, significantly improving the screening efficiency of the screening device and reducing energy consumption and site costs associated with multiple devices.
[0036] As a preferred embodiment of the above, such as Figure 5 As shown, a support mechanism is also provided at the upper part of the cavity to support the screening area 20 of the screening belt 2 located above the collection bin 5. The support mechanism includes a support box 40. The belt of the screening area 20 located above the collection bin 5 passes through the support box 40. The middle area of the upper shell of the support box 40 is recessed downward to form a recessed part. The shell of the support box 40 located in the recessed part and the lower shell of the support box 40 are both close to the belt part of the screening area 20. Corresponding rectangular windows 41 are provided on the shell located in the recessed part of the support box 40 and on the lower shell of the support box 40.
[0037] It should be understood that when the feed pellets are screened by the screening belt 2 in this embodiment, due to the nature of the screening belt 2 itself, when the feed pellets fall onto the screening belt 2, the screening belt 2 may be deformed by gravity and become concave. Therefore, this solution sets up a support mechanism to effectively support the screening belt 2. Specifically, the support box 40 adopts a design in which the upper and lower shells are tightly fitted with the screening belt 2. The upper shell is concave to form a recessed part, so that the screening belt 2 forms a stable support platform above the collection bin 5, avoiding the belt from sagging or shifting due to the gravity or inertia of the material. The recessed part and the rectangular window 41 of the lower shell are precisely aligned with the distribution of the screen holes in the screening area 20, ensuring that the material can only be screened through the screening area 20 with the corresponding aperture size and enter the collection bin 5, thus preventing the feed pellets from spilling.
[0038] Based on the above embodiments, it should be further explained that in Figure 1As shown in the diagram, tensioning mechanisms are also provided on both sides of the interior of the support box 40. The two tensioning mechanisms are used to tension the screening belt 2 portion that moves into the screening area 20 inside the support box 40. Each tensioning mechanism includes two cross-arranged tensioning rollers 42. When the screening belt 2 portion passes through the two tensioning rollers 42, it forms an S-shaped structure. A cylinder 43 is provided between each tensioning roller 42 and the support box 40 to push the tensioning roller 42 to move along the length of the screening belt 2.
[0039] This solution uses a tensioning mechanism (a cross-arranged tensioning roller 42 and a cylinder 43) inside the support box 40 to dynamically adjust the tension of the screening belt 2, maintain the flatness of the screening belt 2 during screening, and prevent the screening belt 2 from being dented and deformed by the weight of the feed particles, thereby reducing local wear of the screening belt 2 or adverse effects on feed screening caused by uneven tension.
[0040] Specifically, sealing strips are adhered to the inner shell of the support box 40 and around the two rectangular windows 41, respectively. These sealing strips are used to seal the gaps between the two rectangular windows 41 and the screening belt 2. This design, by using sealing strips that elastically fit into the gap between the screening belt 2 and the shell, effectively prevents feed particle leakage.
[0041] As a preferred possible implementation, such as Figure 1 As shown, the upper part of the collection bin 5 is connected to the rectangular window 41 on the lower shell of the support box 40 through the collection port. A smoothing component is provided inside the collection port. The smoothing component includes a smoothing wheel whose two ends are connected to the collection port through a sliding mechanism. The outer roller surface of the smoothing wheel passes through the rectangular window 41 on the lower shell of the support box 40 and contacts and abuts against the lower part of the screening belt 2 inside the support box 40. The sliding mechanism is used to drive the smoothing wheel to move left and right along the length direction of the screening belt 2 inside the collection port.
[0042] It can be understood that the uniformity of material distribution and the screening efficiency in the screening process are significantly improved by the arrangement of the smoothing device. Specifically, the smoothing wheel is connected to the material collecting port through a sliding mechanism, the outer roller surface passes through the rectangular window 41 at the lower part of the support box 40 and directly contacts the lower part of the screening belt 2, forming a dynamic flattening effect on the material layer on the screening belt 2. When the material is screened in the screening area 20 of the screening belt 2, the smoothing wheel can be driven to move back and forth along the length direction of the screening belt 2 through the sliding mechanism, so as to uniformly spread the accumulated material layer and eliminate the local thickness caused by uneven feeding or particle agglomeration. That is, the rolling and sliding compound motion of the smoothing wheel can adjust the thickness of the material layer in real time, ensure that the particles enter the screening area 20 in the form of a single layer or a thin layer, and maximize the penetration efficiency of the screen hole.
[0043] In the above embodiment, as shown in Figure 3 The sliding mechanism includes a sliding rail 51 arranged on the side walls on both sides of the material collecting port relative to the screening belt 2, and a pulley 52 arranged inside the sliding rail 51 and connected to both ends of the smoothing wheel 50, respectively. One of the pulleys 52 is connected to a push rod 53 extending to the outside of the machine body 1 away from one side of the smoothing wheel 50. A strip-shaped slot is also provided on the outside of the machine body 1 corresponding to the position of the push rod 53 and in sliding cooperation with the push rod 53. Through the strip-shaped slot, the push rod 53 can slide.
[0044] It should be noted that the sliding rail 51 is fixed on the side walls on both sides of the material collecting port, providing a stable guide path for the pulley 52. The pulley 52 is connected to both ends of the smoothing wheel, ensuring that the smoothing wheel can move stably above the screening belt 2. The push rod 53 extends from the pulley 52 to the outside of the machine body 1 and slides linearly through the limiting of the strip-shaped slot. This design not only simplifies the driving operation, but also avoids the risk of failure caused by complex internal transmission. That is, by manually or automatically controlling the reciprocating motion of the push rod 53, the smoothing wheel can dynamically flatten the material layer along the length direction of the screening belt 2, eliminate the problem of local thickness caused by uneven feeding or particle accumulation, and reduce the risk of screen hole blockage. In addition, the design of the strip-shaped slot not only facilitates the operation and maintenance of the push rod 53, but also improves the sliding accuracy by limiting the movement trajectory, avoiding the deviation of the smoothing wheel from the working area.
[0045] Based on the above embodiment, it is further necessary to explain that the upper part of the machine body 1 is also provided with a feeding bin 10, the upper and lower ends of the feeding bin 10 are open, the size of the lower end opening of the feeding bin 10 is smaller than that of the upper end opening, and the size of the lower end opening of the feeding bin 10 is matched with the size of the rectangular window 41 on the shell of the recessed part of the support box 40. In this scheme, the upper end opening of the feeding bin 10 is larger, which is convenient for quickly receiving a large amount of feed and reducing the leakage during feeding. The size of the lower end opening is smaller and matched with the rectangular window 41 on the shell of the recessed part of the support box 40, which ensures that the material can enter the screening area 20 in a concentrated and uniform manner, avoiding the decrease of screening efficiency caused by dispersed or excessive feeding.
[0046] As a preferred embodiment of the above embodiment, a bin door is provided at the position corresponding to the feeding bin 10 on the side of the machine body 1. After screening is completed, the screened feed particles in the material collecting bin 5 can be taken out by opening the bin door, and the screening belt 2 in the machine body 1 can be cleaned.
[0047] The specific implementation process and implementation mode of the feed screening device for pig feeding disclosed in the embodiment are described as follows to facilitate the full understanding of the technical solution by the technical personnel.
[0048] When performing feed screening work, first, the feed to be screened enters from the feeding bin 10 on the upper part of the machine body 1, and the design of the upper and lower end openings of the feeding bin 10 ensures that the material falls into the screening area 20 of the screening belt 2 located in the recessed part of the support box 40 at a stable flow rate, and then the feed particles meeting the particle size are screened through the screening area 20, and the screened feed particles meeting the particle size requirements fall into the corresponding material collecting bin 5 through the precise docking of the material collecting port and the rectangular window 41. In the screening process, the tensioning mechanism in the support box 40 dynamically adjusts the tension of the screening belt 2 through the cross arrangement of the tensioning rollers 42 and the air cylinders 43 to prevent the belt body from deviating or relaxing, and at the same time, through the synergistic action of the sliding mechanism and the flattening wheel, the material distribution uniformity is optimized and the adhered particles are scraped off to reduce the blockage, so as to ensure that the material layer thickness remains uniform during the entire screening process.
[0049] When different feed particles need to be screened, the driving device can be started according to the requirements to make the driving device drive the transmission roller 3 to rotate, so that the annular closed screening belt 2 moves in a loop, and the screening areas 20 with different diameters on the screening belt 2 enter the rectangular window 41 on the shell of the recessed part of the support box 40 correspondingly, so that the screening and separation of particles with different diameters are completed through the screening areas 20 with different diameters.
[0050] Finally, after the screening work is completed, the bin door can be opened to take out the feed particles in the material collecting bin 5, and the screening belt 2 in the machine body 1 can be cleaned and maintained.
[0051] It should be noted that the driving device in the embodiment is preferably a stepper motor, so as to ensure that it provides accurate driving force, thereby driving the screening belt 2 to rotate circularly through the transmission roller 3.
[0052] The above detailed description of the specific embodiments has further explained the purpose, technical scheme and beneficial effects of the present application. It should be understood that the above is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are schematic drawings, which are only used to cooperate with the disclosed content for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application. Therefore, any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the effects and purposes of the present application, should still be included in the scope of the disclosed technical content of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", etc. in the present application are only used for clear description and are not used to limit the implementation scope of the present application. The change or adjustment of the relative relationship, without substantial change of the technical content, should also be considered as the implementation scope of the present application.
Claims
1. A feed screening device for pig farming, comprising a body (1) having a cavity formed inside the body (1), characterized in that, It also includes a screening belt (2) located in the cavity and supported by multiple drive rollers (3) to form a closed ring structure. A collection bin (5) is provided in the closed ring structure. The screening belt (2) has multiple screening areas (20) along its length direction. The screen holes of the multiple screening areas (20) are different. One of the drive rollers (3) is connected to a drive device installed on the machine body (1). The drive device drives the drive roller (3) to rotate, which drives the screening belt (2) to rotate. As the screening areas (20) move, they pass over the collection bin (5) in sequence. The particles are graded and screened through the screening areas (20) with different screen hole sizes.
2. The feed screening device for pig farming as described in claim 1, characterized in that, A support mechanism is provided at the upper part of the cavity for supporting the screening area (20) of the screening belt (2) located above the collection bin (5). The support mechanism includes a support box (40). The belt of the screening area (20) of the screening belt (2) located above the collection bin (5) passes through the support box (40). The middle area of the upper shell of the support box (40) is recessed downward to form a recessed part. The shell of the support box (40) located in the recessed part and the lower shell of the support box (40) are close to the belt part of the screening area (20). Corresponding rectangular windows (41) are provided on the shell of the recessed part of the support box (40) and on the lower shell of the support box (40).
3. The feed screening device for pig farming as described in claim 2, characterized in that, The support box (40) is also provided with tensioning mechanisms on both sides inside. The two tensioning mechanisms are used to tension the screening belt (2) in the screening area (20) that moves into the support box (40). Each tensioning mechanism includes two cross-arranged tensioning rollers (42). When the screening belt (2) passes through the two tensioning rollers (42), it forms an S-shaped structure. A cylinder (43) is provided between each tensioning roller (42) and the support box (40) to push the tensioning roller (42) to move along the length of the screening belt (2).
4. The feed screening device for pig farming as described in claim 2, characterized in that, Sealing strips are glued to the inner shell of the support box (40) and to the periphery of the two rectangular windows (41) respectively. The sealing strips are used to seal the gap between the two rectangular windows (41) and the belt of the screening belt (2).
5. The feed screening device for pig farming as described in claim 2, characterized in that, The upper part of the collection bin (5) is connected to the rectangular window (41) on the lower shell of the support box (40) through the collection port. A smoothing component is provided inside the collection port. The smoothing component includes a smoothing wheel (50) with both ends connected to the collection port through a sliding mechanism. The outer roller surface of the smoothing wheel passes through the rectangular window (41) on the lower shell of the support box (40) and contacts and abuts against the lower part of the screening belt (2) inside the support box (40). The sliding mechanism is used to drive the smoothing wheel to move left and right along the length direction of the screening belt (2) inside the collection port.
6. The feed screening device for pig farming as described in claim 5, characterized in that, The sliding mechanism includes a slide rail (51) disposed on the side wall of the material collection port opposite to the screening belt (2), and a pulley (52) slidably disposed inside the slide rail (51) and connected to both ends of the smoothing wheel (50). One of the pulleys (52) has a push rod (53) connected to the side away from the smoothing wheel (50) and extending to the outside of the machine body (1). A strip-shaped slot is also provided on the outside of the machine body (1) at the position corresponding to the push rod (53) to slide with the push rod (53). The push rod (53) can slide through the strip-shaped slot.
7. The feed screening device for pig farming as described in claim 2, characterized in that, The upper part of the body (1) is also provided with a feeding chamber (10). The feeding chamber (10) has openings at both the upper and lower ends. The size of the lower opening of the feeding chamber (10) is smaller than that of the upper opening. The size of the lower opening of the feeding chamber (10) is adapted to the size of the rectangular window (41) on the shell located in the recess of the support box (40).
8. The feed screening device for pig farming as described in claim 7, characterized in that, A door is provided on the side of the machine body (1) at the position corresponding to the feed hopper (10).