A self-closing unloading fence and feeding system

Abstract

The present invention discloses a self-closing feeding fence, which includes a first grating plate, a second grating plate, a cross frame, and a rubber sheet; the number of the first grating plates is N, where N is a positive integer and N≥2; the number of the second grating plates is one, and the number of the cross frames is two; the N first grating plates and one second grating plate are arranged in sequence from left to right, and the second grating plate is arranged on the rightmost side. The present invention also provides a feeding system, which includes the self-closing feeding fence as described above, and also includes a ventilation pipe, a pulse dust collector, a conveyor, and a hopper; when using the self-closing feeding fence and the feeding system of the present invention for feeding, the dust generated under the feeding port cannot fly upward out of the feeding port, which ensures the environmental sanitation of the feeding site and the health of the operators, and is beneficial to environmental protection and the occupational health control of the production site.

Description

Technical Field

[0001] The present invention relates to the technical field of material feeding fences and feeding systems, and in particular to a self-closing material feeding fence and a feeding system. Background Art

[0002] In the material unloading process in the fields of grain, feed and other industrial and agricultural production, a unloading fence is required. A conventional unloading fence is a grille welded with steel bars or flat irons. The grille has many open holes for material circulation. When the operator performs the feeding operation, the material is poured onto the grille-type unloading fence, and the material falls from the open holes on the grille to complete the material unloading. However, when the above-mentioned grille-type unloading fence is used for the feeding operation, a large amount of dust will be generated when the material falls from the open holes on the grille. The dust can fly from the open holes on the grille to the top of the unloading fence, causing a large amount of dust to escape and fly, which is not conducive to environmental protection and occupational health control on the production site. Summary of the Invention

[0003] The object of the present invention is to provide a self-closing feeding fence and feeding system. When the self-closing feeding fence and feeding system of the present invention are used for feeding operations, after the material falls, the rubber sheet will automatically return to its original shape and maintain contact with the right side of the first grid plate on its left side, so as to achieve the sealing of the material feeding port. The material dust generated below the feeding port can no longer fly upward out of the feeding port, which greatly reduces the dust generated when the material falls into the feeding pit or feeding hopper during the feeding process, ensures the environmental sanitation of the feeding site and the health of the operators, and is beneficial to environmental protection and occupational health control at the production site. The self-closing feeding fence of the present invention can also be used in application scenarios where vibration is relatively obvious and self-closing needs to be achieved quickly. The present invention can also achieve the purpose of automatic resetting of the residual material at the feeding port without human cleaning, thereby reducing the amount of manual labor.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A self-closing unloading fence, characterized in that: it includes a first grating plate, a second grating plate, a cross frame, and a rubber sheet; the number of the first grating plates is N, wherein N is a positive integer, and N≥2; the number of the second grating plates is one, and the number of the cross frames is two; the first grating plate is a grating plate with a bent middle part, and the second grating plate is a grating plate with a bent middle part; N first grating plates and one second grating plate are arranged from left to right in sequence, and the second grating plate is arranged on the rightmost side; the first grating plates and the second grating plates are respectively connected to the cross frame at both ends, and the bending parts of the first grating plates and the second grating plates are both located on the upper side of the cross frame, and a drooping rubber sheet is provided on the inner side of the left side edge of the second first grating plate to the Nth first grating plate from left to right, and a drooping rubber sheet is provided on the inner side of the left side edge of the second grating plate, and the right side edges of the N first grating plates are in contact with the rubber sheet to their right.

[0006] Preferably, the first grid bar is a bar bent at an acute angle.

[0007] Preferably, the second grid bar is a bar bent at a right angle.

[0008] Preferably, a plurality of vertical incisions are formed in the lower part of the rubber sheet or the rubber sheet is composed of a plurality of rubber strips.

[0009] Preferably, a metal bar is further included; metal bars are arranged on the lower sides of the rubber sheets.

[0010] Preferably, the metal bar is made of iron, cobalt or nickel.

[0011] Preferably, the power device is a variable-frequency motor with a speed reducer.

[0012] Preferably, a lead screw, a mounting seat, a power device, a first slider, a slide bar, a second slider, an action rod, and a proximity switch are further included;

[0013] One end of the lead screw is connected to the power output end of the power device. Mounting seats are respectively arranged at both ends of the lead screw. The lead screw is arranged below the cross frame through the mounting seats. Mounting seats are respectively arranged at both ends of the slide bar. The slide bar is arranged below the cross frame through the mounting seats. The first slider is in threaded connection with the lead screw. The second slider is slidably sleeved on the slide bar. The lead screw and the slide bar are arranged in parallel. Both ends of the action rod are respectively connected to the first slider and the second slider. The action rod and the metal bar are at the same horizontal height. Proximity switches are respectively arranged on the mounting seats at both ends of the lead screw and / or proximity switches are respectively arranged on the mounting seats at both ends of the slide bar.

[0014] Preferably, the action rod is a magnetic bar and the metal bar is a ferromagnetic metal bar.

[0015] The present invention also aims to provide a feeding system, which includes the self-closing feeding fence as described above, and further includes a ventilation pipe, a pulse dust collector, a conveyor, and a hopper;

[0016] The pulse dust collector is communicated with the hopper through the ventilation pipe;

[0017] The hopper is arranged below the cross frame, and the discharge port at the lower part of the hopper is communicated with the conveyor.

[0018] Preferably, the number of the ventilation pipes is multiple. The ventilation pipes extend into the hopper. A plurality of ventilation holes are arranged on the ventilation pipes located inside the hopper. Ventilation pipes are respectively arranged below the second first grid bar to the Nth first grid bar from left to right. A ventilation pipe is arranged below the second grid bar. All the ventilation pipes are communicated with the pulse dust collector.

[0019] Preferably, the conveyor is a screw conveyor or a scraper conveyor.

[0020] Preferably, the fan of the pulse dust collector is a variable-frequency fan.

[0021] The beneficial effects of the present invention are as follows: When using the self-closing feeding fence and feeding system of the present invention for feeding operation, after the material is completely discharged, the rubber sheet will automatically return to its original state and keep in contact with the right side of the first grid plate on its left, realizing the sealing of the material feeding port. The material dust generated below the feeding port can no longer fly upward out of the feeding port, greatly reducing the dust generated when the material falls into the feeding pit or feeding hopper during the feeding process, ensuring the environmental sanitation at the feeding site and the health of the operators, facilitating environmental protection and the occupational health control of the production site. The self-closing feeding fence of the present invention can also be applied to application scenarios with obvious vibration and rapid self-closing requirements. Through the present invention, the purpose of automatically resetting the residual material at the feeding port without manual cleaning can be achieved, reducing the manual labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view schematic diagram of a self-closing feeding fence of the present invention.

[0023] Figure 2 is Figure 1 rear view schematic diagram.

[0024] Figure 3 is Figure 1 structural schematic diagram.

[0025] Figure 4 is Figure 3 left view structural schematic diagram.

[0026] Figure 5 is Figure 3 right view structural schematic diagram.

[0027] Figure 6 is Figure 1 top view schematic diagram.

[0028] Figure 7 is Figure 1 bottom view schematic diagram.

[0029] Figure 8 It is a front view schematic diagram of the first grid plate 1 in a self-closing feeding fence of the present invention.

[0030] Figure 9 It is a front view schematic diagram of the second grid plate 2 in a self-closing feeding fence of the present invention.

[0031] Figure 10 It is a schematic diagram of the first application state of a self-closing feeding fence of the present invention.

[0032] Figure 11 This is a schematic diagram of the second application state of a self - closing feeding fence according to the present invention.

[0033] Figure 12 This is a top - view schematic diagram of a feeding system according to the present invention.

[0034] Figure 13 is Figure 12 a structural schematic diagram.

[0035] Figure 14 This is a schematic diagram of the first application state of a feeding system according to the present invention.

[0036] Figure 15 This is a schematic diagram of the second application state of a feeding system according to the present invention.

[0037] Figure 16 This is a schematic diagram of the first application state of the rubber sheet 4 in the present invention (a plurality of vertical incisions are provided at the lower part of the rubber sheet 4).

[0038] Figure 17 This is a schematic diagram of the second application state of the rubber sheet 4 in the present invention (the rubber sheet 4 is composed of a plurality of rubber strips).

[0039] In the figure: 1 - first grid plate, 2 - second grid plate, 3 - cross - frame, 4 - rubber sheet, 5 - metal strip, 6 - lead screw, 7 - mounting seat, 8 - power device, 9 - first slider, 10 - slide bar, 11 - second slider, 12 - action rod, 13 - proximity switch, 14 - ventilation pipe, 15 - ventilation hole, 16 - pulse dust collector, 17 - conveyor, 18 - hopper. Detailed implementation manners

[0040] As shown in the appendix Figure 1-17As shown in the figure, a self-closing blanking fence includes a first grid plate 1, a second grid plate 2, a cross frame 3, and a rubber sheet 4; the number of the first grid plates 1 is N, where N is a positive integer and N≥2; the number of the second grid plates 2 is one, and the number of the cross frames 3 is two. The first grid plate 1 is a strip plate bent in the middle, and the second grid plate 2 is a strip plate bent in the middle. The N first grid plates 1 and one second grid plate 2 are arranged in sequence from left to right, and the second grid plate 2 is arranged on the rightmost side. The two ends of the first grid plate 1 and the second grid plate 2 are respectively connected to the cross frame 3. The bent parts (bending lines) of the first grid plate 1 and the second grid plate 2 are both located above the cross frame 3. The N first grid plates 1 and the second grid plate 2 are both located between the two cross frames 3. The first grid plate 1 and the second grid plate 2 are both perpendicular to the two cross frames 3. The N first grid plates 1 and the second grid plate 2 are fixed by the two cross frames 3 at both ends. Hanging rubber sheets 4 are arranged on the inner sides of the left sides of the second first grid plate 1 to the Nth first grid plate 1 from left to right, that is, one side of the rubber sheet 4 is arranged on the inner surface of the left side of the opposite bending groove of the first grid plate 1, and the other side of the rubber sheet 4 hangs naturally; a hanging rubber sheet 4 is arranged on the inner side of the left side of the second grid plate 2, that is, one side of the rubber sheet 4 is arranged on the inner surface of the left side of the opposite bending groove of the second grid plate 2, and the other side of the rubber sheet 4 hangs naturally; the right sides of the N first grid plates 1 are all in contact with the rubber sheets 4 on their right sides (right sides), that is: for the N first grid plates 1 arranged from left to right, in the natural state, the right side of the leftmost first grid plate 1 is in contact with the surface of the rubber sheet 4 arranged on the inner side of the left side of the second first grid plate 1 from the left (the rubber sheet 4 hangs naturally and the surface of the rubber sheet 4 is in contact with the right side of the first grid plate 1 on its left, or the rubber sheet 4 is pushed to the right by the right side of the first grid plate 1 on its left, and the rubber sheet 4 undergoes a bending elastic deformation to the right), and so on. The right side of the rightmost Nth first grid plate 1 is in contact with the rubber sheet 4 arranged on the inner side of the left side of the second grid plate 2; further, the lower edge of the rubber sheet 4 is lower than the lower edge of the right side of the first grid plate 1.

[0041] Preferably, the first grid plate 1 is a strip plate bent at an acute angle.

[0042] Preferably, the first grid plate 1 is a strip plate bent at an angle of 30-60 degrees.

[0043] Preferably, the second grid plate 2 is a strip plate bent at a right angle.

[0044] Preferably, a plurality of vertical cuts are made in the lower part of the rubber sheet 4 or the rubber sheet 4 is composed of a plurality of rubber strips, and the edges of the plurality of rubber strips are in contact and spliced together to form one rubber sheet 4.

[0045] Preferably, it further includes a metal strip 5; the lower sides of the rubber sheets 4 are each provided with a metal strip 5.

[0046] When a plurality of vertical incisions (similar to a comb, and the vertical incisions are similar to the gaps between the teeth of a comb) are formed in the lower part of the rubber sheet 4 or the rubber sheet 4 is composed of a plurality of rubber strips (similar to a plurality of door curtains), the lower side of each strip of the rubber sheet 4 is provided with a metal strip 5. Preferably, it further includes a lead screw 6, a mounting seat 7, a power device 8, a first slider 9, a slide bar 10, a second slider 11, an action rod 12, and a proximity switch 13;

[0047] One end of the lead screw 6 is connected to the power output end of the power device 8. The two ends of the lead screw 6 are respectively provided with mounting seats 7. The lead screw 6 is arranged below the cross frame 3 through the mounting seats 7. The two ends of the lead screw 6 are respectively installed below the cross frame 3 through the mounting seats 7. The lead screw 6 can rotate in the mounting seats 7 driven by the power device 8. Bearings required can be installed in the mounting seats 7. The two ends of the slide bar 10 are respectively provided with mounting seats 7. The slide bar 10 is arranged below the cross frame 3 through the mounting seats 7. The two ends of the slide bar 10 are respectively installed below the cross frame 3 through the mounting seats 7. The first slider 9 is threadedly connected to the lead screw 6. The second slider 11 is slidably sleeved on the slide bar 10. The lead screw 6 and the slide bar 10 are arranged in parallel. The two ends of the action rod 12 are respectively connected to the first slider 9 and the second slider 11. The axial direction of the action rod 12 is perpendicular to the axial directions of the lead screw 6 and the slide bar 10 respectively. The action rod 12 and the metal strip 5 are at the same horizontal height. When the action rod 12 moves horizontally towards the metal strip 5 and passes by the metal strip 5, the action rod 12 can hit and disturb the metal strip 5, thereby realizing the disturbance of the rubber sheet 4. In this way, the rubber sheet 4 can be separated from the contact with the right side of the first grid plate 1 on its left during the disturbance process, so as to form a landslide-shaped material discharge opening, and the material can fall from this material discharge opening; proximity switches 13 are respectively arranged on the mounting seats 7 at both ends of the lead screw 6 and / or proximity switches 13 are respectively arranged on the mounting seats 7 at both ends of the slide bar 10.

[0048] That is, proximity switches 13 can be respectively arranged on the mounting seats 7 at both ends of the lead screw 6. Or, proximity switches 13 can be respectively arranged on the mounting seats 7 at both ends of the slide bar 10. Or, proximity switches 13 can be respectively arranged on the mounting seats 7 at both ends of the lead screw 6 and on the mounting seats 7 at both ends of the slide bar 10 at the same time. The proximity switches 13 arranged on the mounting seats 7 at both ends of the lead screw 6 form an induction pair with the first slider 9. When the first slider 9 is sensed to be approaching within the sensing range of the proximity switch 13 paired with the lead screw 6, this proximity switch 13 sends an electrical signal to control the power device 8 to stop operating. The proximity switches 13 arranged on the mounting seats 7 at both ends of the slide bar 10 form an induction pair with the second slider 11. When the second slider 11 is sensed to be approaching within the sensing range of the proximity switch 13 paired with the slide bar 10, this proximity switch 13 sends an electrical signal to control the power device 8 to stop operating. When the power device 8 stops operating, the first slider 9, the second slider 11, and the action rod 12 all stop moving.

[0049] Preferably, the action rod 12 is a magnetic rod. The action rod 12 can be a permanent magnet, and the metal strip 5 is a ferromagnetic metal strip. Preferably, the metal strip 5 is made of iron or cobalt or nickel.

[0050] When the action rod 12 is a magnetic rod, at the same time, the metal strip 5 is a ferromagnetic metal strip; the metal strip 5 is a metal strip that can be attracted by a magnet; that is, the metal strip 5 can be attracted by the magnetic force of the action rod 12. When the action rod 12 moves horizontally closer to the metal strip 5 and the metal strip 5 is within the magnetic force range of the action rod 12, at this time, the metal strip 5 can be attracted by the magnetic force of the action rod 12 and move along with the action rod 12. Further, when the action rod 12 moves horizontally to the right, after the action rod 12 approaches the metal strip 5, the metal strip 5 will be attracted by the magnetic force of the action rod 12, and finally the two will be attracted together and move to the right until the rubber sheet 4 rotates counterclockwise (to the right) to the maximum angle. At this time, the rubber sheet 4 disengages from the contact with the right side of the first grid plate 1 on its left side, and a landslide-shaped blanking port with the largest opening is formed relative to when the action rod 12 has no magnetism. Materials can fall from this blanking port. This situation is especially suitable for materials with larger feeding particle sizes to fall from the formed blanking port. When the action rod 12 continues to move to the right, since the rubber sheet 4 cannot continue to rotate, at this time, under the traction of the rubber sheet 4, the metal strip 5 will disengage from the action rod 12, and both the metal strip 5 and the rubber sheet 4 will return to their original states, realizing the self-closing type of blocking the material blanking port.

[0051] Preferably, the power device 8 is a variable-frequency motor with a speed reducer.

[0052] The object of the present invention also lies in providing a feeding system, which includes the self-closing type blanking fence as described above, and also includes a ventilation pipe 14, a pulse dust collector 16, a conveyor 17, and a hopper 18;

[0053] The pulse dust collector 16 is communicated with the hopper 18 through a ventilation pipe 14; the pulse dust collector 16 can suck air into the hopper 18 through the ventilation pipe 14;

[0054] The hopper 18 is arranged below the cross frame 3. The lower surface of the cross frame 3 can be connected to the upper end of the hopper 18 to form a closed structure. According to actual usage requirements, the power device 8 can be outside the hopper 18 or inside the hopper 18. The discharge port at the lower part of the hopper 18 is communicated with the conveyor 17. The materials discharged from the discharge port at the lower part of the pulse dust collector 16 are separately contained in packaging bags, cloth bags, etc.

[0055] Preferably, the number of the ventilation pipes 14 is multiple. The ventilation pipes 14 extend into the hopper 18. A plurality of ventilation holes 15 are arranged on the ventilation pipes 14 located inside the hopper 18. The ventilation pipes 14 are respectively arranged below the second first grid plate 1 to the Nth first grid plate 1 from left to right, and a ventilation pipe 14 is arranged below the second grid plate 2. The ventilation pipes 14 are all communicated with the pulse dust collector 16. The multiple ventilation pipes 14 can achieve multi-point full-coverage air suction inside the hopper 18. Preferably, the conveyor 17 is a screw conveyor or a scraper conveyor.

[0056] Preferably, the fan of the pulse dust collector 16 is a variable-frequency fan, and its rotational speed can be adjusted according to actual needs to flexibly adjust the required dust removal air volume.

[0057] Usage method of the self-closing feeding fence of the present invention:

[0058] According to flexible actual usage requirements, the self-closing feeding fence of the present invention can be buried on the feeding pit or feeding hopper. The upper surface of the cross frame 3 is flush with the feeding surface of the feeding pit or feeding hopper. For example, the horizontal feeding operation surface composed of the first grid plate 1, the second grid plate 2, and the cross frame 3 fits with the surrounding concrete floor or steel operation platform. According to needs, caulking can also be carried out around with materials such as foam glue or cement. The feeding operators and the wheels of the material pushing carts can smoothly move onto the horizontal feeding operation surface composed of the first grid plate 1, the second grid plate 2, and the cross frame 3.

[0059] The feeding operator opens the material package and pours the material (for example, corn, etc.) in the package bag onto the horizontal feeding operation surface composed of the first grid plate 1, the second grid plate 2, and the cross frame 3. Since the bending parts of the first grid plate 1 and the second grid plate 2 are both located on the upper side of the cross frame 3, the first grid plate 1 and the second grid plate 2 are both in an inverted state, that is, the bending openings of the first grid plate 1 and the second grid plate 2 are both downward, thus creating multiple landslide-shaped feeding openings, and the material will naturally flow into the two adjacent When the material slides down the discharge port formed by the first grid plate 1 and the discharge port formed by the first grid plate 1 and the second grid plate 2, it will push away the rubber sheet 4 on the lower right side of the discharge port, and the rubber sheet 4 will break away from the contact with the right side of the first grid plate 1 on its left side. At this time, the material falls from the gap channel between the right side of the first grid plate 1 and the rubber sheet 4. After the material falls, the rubber sheet 4 will automatically return to its original shape to achieve self-closure, and continue to maintain contact with the right side of the first grid plate 1 on its left side to achieve material discharge. The sealing of the opening; further, when multiple vertical incisions are opened at the lower part of the rubber sheet 4 or the rubber sheet 4 is composed of multiple rubber strips, it can adapt to material areas of different lengths in each feeding port; at this time, for a single feeding port, only the rubber sheet 4 below the area where the material is piled will be pushed away by the material above, and the rubber sheet 4 below the area where the material is not piled will still remain closed to the feeding port. In this way, a single feeding port can achieve self-closing matching of high-degree material feeding, thereby avoiding the large-scale opening of the entire rubber sheet 4 (the rubber sheet 4 is separated from the right side of the first grid plate 1 on its left), and realizing the adaptive opening and self-closing of the minimum opening of the feeding port within the material coverage range, thereby avoiding dust overflow to the greatest extent; through the above treatment, the material dust generated below the feeding port can no longer fly upward out of the feeding port, which greatly reduces the dust generated when the material falls into the feeding pit or feeding hopper during the feeding process, and ensures the environmental sanitation of the feeding site and the health of the operators.

[0060] In order to further expand the scope of application of the self-closing feeding fence of the present invention and improve its usage effect, in the actual use of the present invention, metal strips 5 can be provided on the lower sides of the rubber sheets 4 as needed. Due to the gravity of the metal strips 5 acting on the rubber sheets 4, the rubber sheets 4 are not easily bounced off when vibrating during the feeding process, and the self-closing effect can be achieved faster. The rubber sheets 4 can better and more stably maintain contact with the right sides of the first grid plates 1 on their left sides. Further, the right sides of the first grid plates 1 can be appropriately pushed to the right. The rubber sheets 4 are pushed to the right by the right sides of the first grid plates 1 on their left sides, and the rubber sheets 4 undergo appropriate bending elastic deformation to the right. The rubber sheets 4 are not easily bounced off when vibrating during the feeding process, and the self-closing effect can be achieved faster. The rubber sheets 4 can better and more stably maintain contact with the right sides of the first grid plates 1 on their left sides. Through the above solutions, the self-closing feeding fence of the present invention is more suitable for application scenarios with obvious vibrations and rapid self-closing requirements.

[0061] When the feeding is completed and it is necessary to clean the residual materials in the feeding openings formed by two adjacent first grid plates 1 and the feeding openings formed by the first grid plates 1 and the second grid plates 2, the power device 8 can be started. The power device 8 can drive the lead screw 6 to rotate forward and backward. When the lead screw 6 rotates forward and backward, it can cause the first slider 9 to move linearly back and forth on the lead screw 6. At the same time, under the connection of the action rod 12, the second slider 11 will move linearly back and forth in synchronization with the first slider 9 on the slide rod 10, that is, the action rod 12 will move left and right back and forth under the action of the first slider 9.

[0062] When the action rod 12 is a non-magnetic rod, when the action rod 12 moves horizontally towards the metal strip 5 and passes through the metal strip 5, the action rod 12 can hit and disturb the metal strip 5, thereby disturbing the rubber sheet 4. In this way, the rubber sheet 4 can be separated from the contact with the right side of the first grid plate 1 on its left side during the disturbance process, thus forming a landslide-shaped feeding opening, and the materials can fall from this feeding opening.

[0063] When the action rod 12 is a magnetic rod and the metal strip 5 is a ferromagnetic metal strip, that is, the metal strip 5 can be attracted by the magnetic force of the action rod 12. When the action rod 12 moves horizontally to the right with the first slider 9, when the action rod 12 moves horizontally close to the metal strip 5, the metal strip 5 is within the range of the magnetic force of the action rod 12. At this time, the metal strip 5 will be attracted by the magnetic force of the action rod 12 and move to the right with the action rod 12. At this time, the metal strip 5 will drive the rubber sheet 4 to break away from the contact with the right side edge of the first grid plate 1 on its left side. At this time, the residual material in the above-mentioned discharge port will leak out from the gap between the right side edge of the first grid plate 1 and the rubber sheet 4. When the action rod 12 continues to move far enough to the right with the first slider 9, the metal strip 5 is affected by the reduction of the magnetic force of the action rod 12, and finally the metal strip 5 breaks away from the magnetic attraction of the action rod 12 and automatically resets under the action of its gravity. At this time, the rubber sheet 4 also automatically returns to its original state and continues to maintain contact with the right side edge of the first grid plate 1 on its left side, thereby achieving the blocking of the material discharge port.

[0064] When the action rod 12 moves to the right end of the screw rod 6 or the slide rod 10, the proximity switch 13 detects the first slider 9 or the second slider 11, and the proximity switch 13 sends an electrical signal to control the power device 8 to stop running; similarly, when the power device 8 is started to reverse, the action rod 12 will move in the opposite direction to the left end of the screw rod 6 or the slide rod 10, and the proximity switch 13 detects the first slider 9 or the second slider 11, and the proximity switch 13 sends an electrical signal to control the power device 8 to stop running; the above process can be repeated according to actual needs, and further, the above process can be set to automatic control.

[0065] In this way, the present invention can achieve the purpose of unmanned cleaning and automatic resetting of residual materials at the discharge port, reducing manual labor. The above technical solution is particularly suitable for processing materials with low bulk density (≤310g / L) (for example, bran, etc.) and has a particularly good effect.

[0066] The method of using the feeding system of the present invention is as follows:

[0067] Connect the air supply pipe of the compressor to the air-using component of the pulse dust collector 16, start the pulse dust collector 16 and the conveyor 17, adjust the air volume of the fan of the pulse dust collector 16 according to actual needs, and under the action of the pulse dust collector 16, the air in the hopper 18 is sucked into the pulse dust collector 16 through the ventilation pipe 14, and the air is discharged from the pulse dust collector 16 after dust removal.

[0068] During the above-mentioned feeding process, the pulse dust collector 16 creates a negative pressure inside the hopper 18. On the one hand, the material in the above-mentioned discharge port can enter the hopper 18 more smoothly and quickly under the action of the negative pressure inside the hopper 18. On the other hand, under the action of the pulse dust collector 16, the dust generated during the feeding process is further reduced, thereby ensuring the environmental hygiene of the feeding site and the health of the operators.

[0069] The material falling into the hopper 18 is conveyed by the conveyor 17 below the hopper 18 to the required position or the equipment feed inlet.

[0070] After the feeding is completed, the power device 8 can also be started to perform the above operations to clean the residual material at the discharge port without human intervention.

Claims

1. A self-closing blanking fence, characterized by: It includes a first grid plate, a second grid plate, a cross frame, and a rubber sheet; the number of the first grid plates is N, where N is a positive integer and N≥2; the number of the second grid plates is one, and the number of the cross frames is two; the first grid plate is a plate bent in the middle, and the second grid plate is a plate bent in the middle; N first grid plates and one second grid plate are arranged in sequence from left to right, and the second grid plate is arranged on the rightmost side; both ends of the first grid plate and the second grid plate are respectively connected to the cross frame, and the bent parts of the first grid plate and the second grid plate are both located above the cross frame. Hanging rubber sheets are arranged on the inner sides of the left sides of the second to the Nth first grid plates from left to right, and a hanging rubber sheet is arranged on the inner side of the left side of the second grid plate. The right sides of the N first grid plates are all in contact with the rubber sheets on their right sides; It further includes a metal strip; metal strips are arranged on the lower sides of the rubber sheets; It further includes a lead screw, mounting seats, a power device, a first slider, a slide bar, a second slider, an action rod, and a proximity switch; one end of the lead screw is connected to the power output end of the power device, mounting seats are respectively arranged at both ends of the lead screw, the lead screw is arranged under the cross frame through the mounting seats, mounting seats are respectively arranged at both ends of the slide bar, the slide bar is arranged under the cross frame through the mounting seats, the first slider is threadedly connected to the lead screw, the second slider is slidably sleeved on the slide bar, the lead screw and the slide bar are arranged in parallel, both ends of the action rod are respectively connected to the first slider and the second slider, the action rod and the metal strip are at the same horizontal height, proximity switches are respectively arranged on the mounting seats at both ends of the lead screw and / or proximity switches are respectively arranged on the mounting seats at both ends of the slide bar; The rubber sheet is pushed to the right by the right side of the first grid plate on its left, and the rubber sheet undergoes a bending elastic deformation to the right; The self-closing type blanking fence is applied to cleaning the residual low-density materials at the blanking port in a vibrating scenario; A method for cleaning the residual low-density materials at the blanking port: Start the power device, the action rod hits the metal strip, the rubber sheet disengages from the contact with the right side of the first grid plate on its left, and the materials remaining in the blanking port leak from the gap between the right side of the first grid plate and the rubber sheet.

2. The self-closing blanking fence according to claim 1, characterized in that: The first grid plate is a plate bent at an acute angle.

3. The self-closing blanking fence according to claim 1, characterized in that: The second grid plate is a plate bent at a right angle.

4. The self-closing blanking fence according to claim 1, characterized in that: Multiple vertical cuts are made in the lower part of the rubber sheet or the rubber sheet is composed of multiple rubber strips.

5. The self-closing blanking fence according to claim 1, characterized in that: The action rod is a magnetic rod, and the metal strip is a ferromagnetic metal strip.

6. A feeding system, characterized in that: The feeding system includes the self-closing type blanking fence according to any one of claims 1, 2, 3, 4, and 5, and further includes a ventilation pipe, a pulse dust collector, a conveyor, and a hopper; The pulse dust collector is communicated with the hopper through the ventilation pipe; The hopper is arranged under the cross frame, and the discharge port at the lower part of the hopper is communicated with the conveyor.

7. The feeding system according to claim 6, characterized in that: The number of the ventilation pipes is multiple, the ventilation pipes extend into the hopper, multiple ventilation holes are arranged on the ventilation pipes located inside the hopper, ventilation pipes are respectively arranged under the second to the Nth first grid plates from left to right, a ventilation pipe is arranged under the second grid plate, and the ventilation pipes are all communicated with the pulse dust collector.

8. The feeding system according to claim 6, wherein: The conveyor is a screw conveyor or a scraper conveyor.

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