A pulse impurity removing device for feed raw materials

Abstract

The application relates to a feed raw material pulse impurity removing device and relates to the field of separating equipment, which comprises a casing, a flower plate and a plurality of bag cages arranged in the casing, the flower plate is provided with a plurality of circular holes corresponding to the bag cages one by one, the upper ends of the bag cages all extend into the corresponding circular holes, cloth bags are arranged on the bag cages, the two ends of the cloth bags are both provided with openings, a plurality of cover plates are arranged above the flower plate, the cover plates correspond to the circular holes one by one and are slidably connected with the flower plate in the vertical direction, the corresponding circular holes are closed when the cover plates are at the lowest position, the cover plates are rotationally connected with mounting plates, the upper and lower sides of the mounting plates are both provided with temporary storage parts for placing the cloth bags, driving rings are slidably connected with the bag cages, connecting pieces for driving the cloth bags to move are arranged at the upper ends of the driving rings, and supporting blocks for closing the lower ends of the cloth bags are arranged at the lower ends of the bag cages. In the replacement process, the cover plates close the circular holes, the remaining cloth bags can normally work, the replacement process does not cause dust leakage, and the processing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of separation equipment, and in particular to a pulse impurity removal device for feed ingredients. Background Technology

[0002] With technological advancements, the requirements for safety, greenness, and pollution-free products in bio-feed are becoming increasingly stringent. Therefore, strict quality control is necessary throughout the feed production process, from raw material selection and processing steps to the quality inspection of the finished feed. Feed raw materials are generally nutrient-rich plants such as straw and soybean meal. These materials can accumulate a significant amount of dust during growth and drying. Before feed processing, it is essential to remove dust and other impurities from the raw materials to ensure the quality of the finished feed.

[0003] Related technology can be found in Chinese Patent No. CN215842125U, which discloses a pulse dust collector for feed production and processing, belonging to the field of feed processing. It includes a support frame, a dust collection box fixedly connected to the upper end of the support frame, an ash hopper fixedly connected to the lower end of the dust collection box, an ash discharge valve fixedly connected to the lower end of the ash hopper, an air inlet fixedly connected to the left end of the ash hopper, an electromagnetic pulse valve fixedly connected to the left end of the dust collection box, a blowpipe fixedly connected to the right end of the electromagnetic pulse valve, the blowpipe extending into the inner cavity of the dust collection box, a venturi tube fixedly connected to the inner cavity of the dust collection box, a dust filter bag fixedly connected to the bottom of the venturi tube, and an air outlet fixedly connected to the right end of the dust collection box. This design can reduce the amount of dust entering the induced draft fan during the use of the pulse dust collector, thus extending the service life of the induced draft fan.

[0004] Currently, the filter bags in common pulse jet dust collectors are typically replaced collectively after a certain period of operation. Alternatively, if one bag breaks, it indicates that the remaining bags are nearing their end of life, so a collective replacement is usually necessary. The replacement process involves manually opening the top of the dust collector, disassembling the air pipes used for the pulse jet, pulling out the bag cage, and then removing the old filter bags. If a bag is damaged, it must be manually cut open to empty the accumulated impurities. Finally, a new filter bag is inserted, and the bag cage is reinserted. This process is repeated for each bag in sequence to complete the collective replacement.

[0005] Regarding the aforementioned technologies, since the raw materials are prone to contain small amounts of hard impurities such as fine stones, these impurities can easily tear the cloth bags under high wind speeds, causing damage. Since this type of damage is not due to the normal lifespan reaching its limit, the remaining cloth bags can still be used. However, once damage occurs, the machine needs to be stopped immediately for manual replacement of individual cloth bags, which greatly affects processing efficiency. Summary of the Invention

[0006] To improve processing efficiency, this application provides a pulse impurity removal device for feed raw materials.

[0007] This application provides a pulse impurity removal device for feed raw materials, which adopts the following technical solution:

[0008] A pulse impurity removal device for feed raw materials includes a housing, a perforated plate and several bag cages inside the housing. The perforated plate has several circular holes corresponding to the bag cages. A pulse tube is provided above the perforated plate, and the pulse tube has branch pipes corresponding to the circular holes. The upper ends of the bag cages all extend into the corresponding circular holes. A cloth bag is provided outside the bag cage, and both ends of the cloth bag are open. Several baffles are provided above the perforated plate. The baffles correspond to the circular holes and are slidably connected to the perforated plate in the vertical direction. When the baffle is at its lowest point, it closes the corresponding circular hole. A mounting plate is rotatably connected to the baffle, and the axis of rotation is set radially along the baffle. Temporary storage parts for placing cloth bags are provided on the upper and lower sides of the mounting plate. A drive ring that slides vertically is provided outside the bag cage. The upper end of the drive ring has a connecting piece for moving the cloth bag. A support block for closing the lower end of the cloth bag is provided at the lower end of the bag cage. The support block is fixedly connected to the housing.

[0009] By adopting the above technical solution, the user places a spare cloth bag on the upper side of the mounting plate inside the cover. After the cloth bag is damaged, the cover descends to close the corresponding round hole. Then, the drive ring moves the damaged cloth bag upward to the lower side of the mounting plate via the connector. Subsequently, the mounting plate flips to move the spare cloth bag to the lower side of the mounting plate. The drive ring then moves one end of the spare cloth bag downward via the connector, covering the bag cage with the spare cloth bag until the drive ring contacts the support block. The support block then closes the lower end of the cloth bag, thus quickly completing the cloth bag replacement. Since the cover closes the round hole during the replacement process, the remaining cloth bags can work normally. The replacement process does not cause dust leakage, which helps to improve processing efficiency.

[0010] Optionally, the temporary storage section includes a connecting block and a limiting rod. The connecting block is fixedly connected to the mounting plate, and the limiting rod is rotatably connected to the end of the connecting block away from the mounting plate. The rotation axis of the limiting rod is set along the length direction of the connecting block. The length of the limiting rod is less than the inner diameter of the bag. A first limiting protrusion is fixed inside the end of the bag away from the mounting plate, and the limiting rod abuts against the lower end face of the first limiting protrusion.

[0011] By adopting the above technical solution, the spare cloth bag is folded and wrapped around the connecting block, so that one end of the cloth bag abuts against the mounting plate, and the first limiting protrusion at the other end abuts against the limiting rod, thereby allowing the cloth bag to be installed in the temporary storage section. The structure is simple and the installation is convenient.

[0012] Optionally, the connector includes a connecting ring that is rotatably connected to the drive ring on the same axis. The connecting ring is fixedly provided with a connecting protrusion for abutting against the first limiting protrusion. The connecting ring and the limiting rod are provided with a snap-fit ​​portion for engaging with each other.

[0013] By adopting the above technical solution, the connecting ring rises and falls synchronously with the drive ring until the drive ring rises to its highest point. At this point, the connecting ring and the limiting rod are connected by the snap-fit ​​part. Then, the connecting ring drives the limiting rod to rotate, so that the limiting rod no longer abuts against the lower end face of the first limiting protrusion. At the same time, the connecting protrusion abuts against the upper end face of the first limiting protrusion. Then, the drive ring descends, and the cloth bag can be moved through the connecting ring to put the cloth bag over the bag cage. There is no need to stop the machine and manually lower the cloth bag over the bag cage, which helps to improve processing efficiency.

[0014] Optionally, the connecting block is equipped with a dual-head motor, and the two output shafts of the dual-head motor correspond one-to-one with the limit rods and are fixedly connected to the corresponding limit rods.

[0015] By adopting the above technical solution, the dual-head motor can directly control the rotation of the two limit rods, which is simple in structure and easy to control.

[0016] Optionally, a second limiting protrusion is fixed inside the end of the bag away from the mounting plate, and a gap is provided between the first limiting protrusion and the second limiting protrusion to match the connecting protrusion.

[0017] By adopting the above technical solution, when the drive ring rises, the connecting protrusion abuts against the second limit protrusion, causing the worn-out cloth bag to rise. The structure is simple and the control is convenient.

[0018] Optionally, the perforated plate is fixed with several vertical cylinders, each corresponding to a circular hole, with the center of the circular hole located on the axis of the vertical cylinder. The cover is cylindrical and coaxially arranged with the corresponding vertical cylinder. The outer diameter of the vertical cylinder is adapted to the inner diameter of the cover, and the branch pipes are all connected to the lower end of the corresponding vertical cylinder.

[0019] By adopting the above technical solution, the baffle covers are fitted over the vertical cylinder when they descend, which facilitates sealing of the round hole. At the same time, the branch pipe is connected to the lower end of the vertical cylinder, which facilitates pulse cleaning and does not affect the raising and lowering of the baffle covers.

[0020] Optionally, a sealing ring is provided at the upper end of the vertical cylinder. The thickness of the sealing ring gradually increases from top to bottom. The inner wall of the sealing ring is fixedly connected to the vertical cylinder, and the outer wall transitions in a sloping manner from top to bottom.

[0021] By adopting the above technical solution, when the baffle is lowered, the sealing ring is squeezed between the baffle and the vertical cylinder. Due to the change in the thickness of the sealing ring, the lower the height of the baffle, the higher the degree of compression of the sealing ring, resulting in higher sealing performance.

[0022] Optionally, a wind pressure sensor is fixedly installed on the inner wall of the vertical cylinder, and a plurality of miniature cylinders corresponding one-to-one with the baffles are fixedly installed on the housing. The piston rods of the miniature cylinders are all fixedly connected to the corresponding baffles. The vertical cylinder is equipped with a detection and control circuit, which includes a sensing module, a comparison module, and a control module: the sensing module, which is used to sense the wind pressure inside the vertical cylinder by the wind pressure sensor and output a sensing signal; the comparison module, which is electrically connected to the sensing module, which is used to receive the sensing signal from the sensing module. When the comparison module receives the sensing signal, it compares the voltage value corresponding to the sensing signal with a preset voltage value. If the voltage value of the sensing signal is greater than the preset voltage value, the comparison module outputs a start signal; the control module, which is electrically connected to the comparison module, which is used to receive the start signal from the comparison module. When the control module receives the start signal, it outputs a control signal, which controls the opening and closing of the miniature cylinders.

[0023] By adopting the above technical solution, when the wind pressure sensor detects that the wind pressure inside the vertical cylinder exceeds a certain threshold, the sensing signal of the sensing module is transmitted to the comparison module. The start signal of the comparison module controls the extension of the corresponding micro cylinder, thereby causing the cover to fall down and fit over the outside of the vertical cylinder, automatically sealing the round hole. This facilitates the replacement of the filter bag and prevents dust from being discharged through the damaged filter bag for a long time, ensuring the dust removal effect.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. The user places a spare cloth bag on the upper side of the mounting plate inside the cover. After the cloth bag is damaged, the cover descends to close the corresponding round hole. Then, the drive ring moves the damaged cloth bag upward to the lower side of the mounting plate via the connector. Subsequently, the mounting plate flips to move the spare cloth bag to the lower side of the mounting plate. The drive ring moves one end of the spare cloth bag downward via the connector, putting the spare cloth bag over the bag cage until the drive ring contacts the support block. The support block then closes the lower end of the cloth bag, thus quickly completing the cloth bag replacement. Because the cover closes the round hole during the replacement process, the remaining cloth bags can work normally. The replacement process does not cause dust leakage, which helps improve processing efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0027] Figure 2 This is a schematic diagram of the internal structure of the casing.

[0028] Figure 3 This is a schematic diagram of the exploded structure of the cloth bag, bag cage, vertical tube, and cover.

[0029] Figure 4 This is a schematic diagram showing the relative positions of the drive ring and the mounting plate.

[0030] Figure 5This is a cross-sectional structural diagram of the mounting plate and the drive ring.

[0031] Figure 6 This is a schematic diagram of the detection and control circuit of this application.

[0032] Figure 7 This is a schematic diagram showing the relative positions of the limit rod and the connecting ring.

[0033] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Support mesh; 12. Opening door; 2. Flower plate; 21. Round hole; 22. Vertical cylinder; 221. Sealing ring; 3. Cloth bag; 31. First limiting protrusion; 32. Second limiting protrusion; 4. Pulse tube; 41. Branch pipe; 5. Support block; 51. Bag cage; 52. Threaded rod; 53. Guide rod; 6. Cover; 61. Miniature cylinder; 62. Top cover; 7. Mounting plate; 71. Temporary storage section; 711. Connecting block; 7111. Dual-head motor; 712. Limiting rod; 7122. Snap-fit ​​hole; 8. Drive ring; 81. Connecting ring; 811. Connecting protrusion; 812. Snap-fit ​​block; 9. Wind pressure sensor; 91. Sensing module; 92. Comparison module; 93. Control module. Detailed Implementation

[0034] The present application will be further described in detail below with reference to all the accompanying drawings.

[0035] This application discloses a pulse impurity removal device for feed raw materials.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A pulse cleaning device for feed ingredients includes a housing 1 fixed on the ground. A horizontal perforated plate 2 is fixedly installed inside the housing 1. The perforated plate 2 divides the space inside the housing 1 into upper and lower parts. The perforated plate 2 is evenly provided with a number of round holes 21. A cloth bag 3 is installed at each of the round holes 21. During operation, dust-laden air enters below the perforated plate 2, passes through the cloth bag 3, enters above the perforated plate 2, and is then discharged. Dust and impurities are trapped below the perforated plate 2 by the cloth bag 3 and discharged from the lower end of the housing 1.

[0037] Reference Figure 1 , Figure 2 and Figure 3 Several baffles 6 are installed above the tube sheet 2. Each baffle 6 corresponds to a round hole 21 and is located directly above the corresponding round hole 21. A spare cloth bag 3 is folded inside the baffle 6. A detection component and a drive component are installed inside the housing 1. After the detection component detects an abnormal wind pressure at a certain round hole 21, it determines that the cloth bag 3 is damaged. Then the baffle 6 closes the corresponding round hole 21. Then the drive component drives the damaged cloth bag 3 to rise and fold into the baffle 6, and pulls out the spare cloth bag 3 from the baffle 6 for installation. The machine does not need to be stopped during the process. The other cloth bags 3 can work normally, and the replacement of the cloth bags 3 is completed automatically with high efficiency.

[0038] Reference Figure 1 and Figure 2 The cover 6 is cylindrical and coaxial with the corresponding vertical cylinder 22, with the upper end closed and the lower end open. Several miniature cylinders 61, corresponding one-to-one with the cover 6, are fixedly installed on the top of the casing 1. The miniature cylinders 61 are vertically arranged, and their piston rods are fixedly connected to the corresponding covers 6 to support them. The extension and retraction of the piston rods of the miniature cylinders 61 controls the raising and lowering of the covers 6. Several opening and closing doors 12 are hinged to the upper end of the casing 1, each corresponding to a cover 6. A top cover 62 is hinged to the upper end of each cover 6. The user can open the opening and closing doors 12 and the top cover 62 to operate inside the cover 6 and install the spare cloth bag 3 inside the cover 6.

[0039] Reference Figure 3 and Figure 4 An installation plate 7 is rotatably connected inside the cover 6. The rotation axis of the installation plate 7 is arranged radially along the cover 6, and the cover 6 is equipped with a micro motor to control the rotation of the installation plate 7, so that the installation plate 7 can be flipped inside the cover 6. The upper and lower sides of the installation plate 7 are provided with temporary storage parts 71 for placing the cloth bag 3. The temporary storage part 71 includes a connecting block 711 and a limiting rod 712. The connecting block 711 is conical and coaxial with the cover 6, and the end with the relatively larger cross-sectional diameter is fixedly connected to the installation plate 7. The limiting rod 712 is located at the end of the connecting block 711 away from the installation plate 7 and is arranged radially along the cover 6. The middle position of the connecting block 711 in the length direction is rotatably connected to the connecting block 711.

[0040] Reference Figure 4 and Figure 5 The cloth bag 3 is a cylindrical shape with openings at both ends and has several creases along the axial direction. The two ends of the cloth bag 3 are made of a relatively non-deformable material such as polyurethane. The user folds the spare cloth bag 3 along the creases and places it in advance in the temporary storage section 71. Two first limiting protrusions 31 are fixedly connected to the inner wall of one end of the cloth bag 3. The length of the limiting rod 712 is less than the diameter of the cloth bag 3. The user puts the cloth bag 3 over the connecting block 711 and makes the end of the cloth bag 3 away from the first limiting protrusions 31 abut against the mounting plate 7. The distance between the two first limiting protrusions 31 is less than the length of the limiting rod 712. The user rotates the cloth bag 3 so that the two ends of the limiting rod 712 abut against the side of the first limiting protrusions 31 away from the mounting plate 7, thereby limiting the cloth bag 3 and realizing the installation of the spare cloth bag 3.

[0041] Reference Figure 2 and Figure 3Several vertical cylinders 22, corresponding one-to-one with the round holes 21, are fixedly installed above the flower plate 2. The vertical cylinders 22 are all cylindrical with vertical axes. The diameter of the vertical cylinder 22 is the same as that of the round hole 21, and the center of the round hole 21 passes through the axis of the corresponding vertical cylinder 22. The inner diameter of the cover 6 is adapted to the outer diameter of the vertical cylinder 22. After the cover 6 is lowered, it can be fitted over the vertical cylinder 22.

[0042] Reference Figure 3 The detection component is located inside the vertical cylinder 22. The detection component includes a wind pressure sensor 9 and a detection and control circuit. The wind pressure sensor 9 is fixedly installed on the inner wall of the vertical cylinder 22. Once the filter bag 3 is damaged, the dust-laden gas loses the filtration of the filter bag 3 and directly passes through the vertical cylinder 22 into the tube sheet 2, which will cause the wind pressure inside the vertical cylinder 22 to increase.

[0043] Reference Figure 2 , Figure 3 and Figure 6 The detection and control circuit includes a sensing module 91, a comparison module 92, and a control module 93.

[0044] When the wind pressure sensor 9 detects that the wind pressure is higher than a certain threshold, the sensing module 91 outputs a sensing signal.

[0045] Comparison module 92 includes:

[0046] Comparator T, the positive input terminal of comparator T is electrically connected to the output terminal of wind pressure sensor 9;

[0047] The base of transistor Q is electrically connected to the output of comparator T.

[0048] Resistor R1, one end of resistor R1 is electrically connected to the collector of transistor Q, and the other end of resistor R1 is electrically connected to power supply VCC.

[0049] The relay's electromagnetic coil KA1 has one end electrically connected to the emitter of the transistor Q.

[0050] Resistor R2, one end of which is electrically connected to the end of the relay's electromagnetic coil KA1 that is furthest from the transistor Q, and the other end of resistor R2 is grounded;

[0051] Control module 93 includes:

[0052] The normally open switch KA1-1 of the relay is electrically connected at one end to the electromagnetic coil KA1 of the relay and the resistor R2; one end of the miniature cylinder 61 is electrically connected to the end of the normally open switch KA1-1 of the relay away from the resistor R2.

[0053] Resistor R3 is connected at one end to the normally open switch KA1-1 of the miniature cylinder 61 away from the relay, and the other end of resistor R3 is grounded.

[0054] Reference Figure 2 and Figure 3 Under the action of the detection and control circuit, the wind pressure sensor 9 quickly senses the damage to the cloth bag 3 and controls the piston rod of the micro cylinder 61 to extend, causing the cover 6 to descend. A sealing ring 221 is provided at the upper end of the vertical cylinder 22. The thickness of the sealing ring 221 gradually increases from top to bottom. The inner wall of the sealing ring 221 is fixedly connected to the vertical cylinder 22, and the outer wall transitions in a sloping manner from top to bottom. As the cover 6 descends, the sealing ring 221 is squeezed and deformed between the cover 6 and the vertical cylinder 22, thereby ensuring that the cover 6 has a good sealing effect on the upper end of the vertical cylinder 22.

[0055] Reference Figure 1 , Figure 2 and Figure 3 Because the vertical cylinder 22 was sealed in time, blocking the passage of dust-laden gas, the remaining filter bags 3 could continue to work normally without stopping the machine. Next, the damaged filter bags 3 need to be disassembled. Several support blocks 5 are installed inside the casing 1, each corresponding to a circular hole 21. A support mesh 11 made of welded steel bars is fixedly installed inside the casing 1, and the support mesh 11 is fixedly connected to the support blocks 5, thus supporting the support blocks 5. A bag cage 51 is fixedly installed at the upper end of the support block 5, extending vertically upwards into the circular hole 21, and the filter bags 3 are fitted over the bag cage 51.

[0056] Reference Figure 2 and Figure 3 A vertical threaded rod 52 and a guide rod 53 are fixedly installed on the upper end of the support block 5. A drive ring 8 is provided on the outer sleeve of the bag cage 51. The drive ring 8 is slidably connected to the guide rod 53 and threadedly connected to the threaded rod 52. A micro motor that controls the rotation of the threaded rod 52 is installed inside the support block 5. After the cover 6 seals the vertical cylinder 22, the micro motor drives the threaded rod 52 to rotate, and the drive ring 8 slides upward under the restriction of the guide rod 53.

[0057] Reference Figure 5 and Figure 7 A second limiting protrusion 32 is fixedly installed inside the bag 3 near the end of the first limiting protrusion 31. The upper end of the drive ring 8 is provided with a connecting member for moving the bag 3. The connecting member includes a connecting ring 81 coaxially rotatably connected to the drive ring 8. Two connecting protrusions 811 are located at the upper end of the connecting ring 81. A gap is left between the first limiting protrusion 31 and the second limiting protrusion 32 to accommodate the connecting protrusions 811. The connecting protrusions 811 are located within the gap of the damaged bag 3, thus limiting the lower end of the bag 3 and ensuring normal operation when the bag 3 is not damaged. When the drive ring 8 rises, the connecting protrusions 811 drive the bag 3 upwards via the second limiting protrusion 32.

[0058] Reference Figure 4 and Figure 5As the length of the damaged bag 3 decreases, the damaged bag 3 automatically folds along the crease. At the same time, the dust accumulated inside the bag 3 due to the damage is released from the opening at the lower end of the bag 3 and discharged from the bag cage 51 by the wind. When the drive ring 8 moves to the highest position, the bag 3 enters the temporary storage part 71 on the lower side of the mounting plate 7.

[0059] Reference Figure 4 and Figure 5 A locking part is provided between the connecting ring 81 and the limiting rod 712, which includes a locking block 812 fixed on the connecting ring 81 and a locking hole 7122 opened on the limiting rod 712. As the driving ring 8 rises, the locking block 812 locks into the locking hole 7122. A double-headed motor 7111 is fixedly installed in the connecting block 711. The two output ends of the double-headed motor 7111 correspond one-to-one with the two limiting rods 712 and are fixedly connected to the corresponding limiting rods 712. At this time, the double-headed motor 7111 controls the limiting rod 712 located below the mounting plate 7 to rotate, so that the side of the first limiting protrusion 31 away from the mounting plate 7 abuts against it, thereby limiting the damaged cloth bag 3 in the temporary storage part 71 on the lower side of the mounting plate 7.

[0060] Reference Figure 2 and Figure 5 Subsequently, while ensuring the cover 6 remains connected to the vertical cylinder 22, the micro cylinder 61 raises the cover 6 a certain distance. Then, the micro motor drives the mounting plate 7 to flip, swapping the upper and lower sides of the mounting plate 7. This moves the spare cloth bag 3 to the lower side of the mounting plate 7, and the micro cylinder 61 then controls the cover 6 to descend again. The dual-head motor 7111 drives the limiting rod 712, which is now located below the mounting plate 7, to rotate. The connecting ring 81 rotates synchronously, so that the limiting rod 712 no longer abuts against the first limiting protrusion 31, and the connecting protrusion 811 enters the gap of the spare cloth bag 3.

[0061] Reference Figure 3 and Figure 5 Subsequently, the threaded rod 52 rotates, causing the drive ring 8 to descend. The connecting protrusion 811 pulls the filter bag 3 down via the first limiting protrusion 31. When the drive ring 8 moves to its lowest state, the filter bag 3 is completely covered outside the bag cage 51, and the lower end of the drive ring 8 abuts against the support block 5. Dust-laden gas is not easy to enter from below the filter bag 3. Both the upper and lower ends of the filter bag 3 can be made of harder plastic or polyurethane material, which is not easy to deform and has a better effect.

[0062] Reference Figure 2 Finally, the cover 6 rises and no longer seals the vertical cylinder 22, allowing the replaced cloth bag 3 to work normally. The user can then remove the damaged cloth bag 3 from the cover 6 and replace it with a new spare cloth bag 3. The entire replacement process can be done manually without stopping the machine, which helps improve efficiency.

[0063] Reference Figure 2 and Figure 3 Above the tube sheet 2, there is a pulse tube 4 for connecting to an external pulse generator. The pulse tube 4 is connected to several branch tubes 41 that correspond one-to-one with the vertical tube 22. The branch tubes 41 connect to the inside of the vertical tube 22 from the lower end of the vertical tube 22, so that compressed air is introduced into the filter bag 3 during pulse cleaning, without affecting the cover 6 on the upper end of the vertical tube 22.

[0064] The implementation principle of the pulse impurity removal device for feed raw materials in this application embodiment is as follows: A spare cloth bag 3 is folded and installed inside the cover 6. After the detection component detects an abnormal wind pressure at a certain round hole 21, it is determined that the cloth bag 3 is damaged. Then the cover 6 closes the corresponding round hole 21. Then the drive component drives the damaged cloth bag 3 to rise and fold into the cover 6. Then the mounting plate 7 rotates to face the spare cloth bag 3 to the bag cage 51. The drive ring 8 pulls the spare cloth bag 3 out of the cover 6 and puts it on the outside of the bag cage 51, automatically completing the replacement of the cloth bag 3. There is no need to stop the machine during the process. The other cloth bags 3 can work normally, which helps to improve processing efficiency.

[0065] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pulse impurity removal device for feed raw materials, comprising a housing (1), a perforated plate (2) and a plurality of bag cages (51) inside the housing (1), the perforated plate (2) having a plurality of circular holes (21) corresponding one-to-one with the bag cages (51), a pulse tube (4) being provided above the perforated plate (2), and the pulse tube (4) having branch pipes (41) corresponding one-to-one with the circular holes (21), characterized in that: The upper ends of the bag cages (51) extend into the corresponding circular holes (21), the bag cages (51) are sleeved with cloth bags (3), the two ends of the cloth bags (3) are provided with openings, the upper side of the flower plate (2) is provided with a plurality of cover plates (6), the cover plates (6) correspond to the circular holes (21) one by one and are connected with the flower plate (2) in a sliding mode along the vertical direction, the lowest cover plate (6) closes the corresponding circular hole (21), the cover plate (6) is rotationally connected with a mounting plate (7) and the rotation axis is arranged along the radial direction of the cover plate (6), the upper and lower sides of the mounting plate (7) are provided with temporary storage parts (71) for placing the cloth bags (3), the bag cages (51) are sleeved with a driving ring (8) which slides along the vertical direction, the upper end of the driving ring (8) is provided with a connecting piece for driving the cloth bags (3) to move, and the lower end of the bag cage (51) is provided with a supporting block (5) for closing the lower end of the cloth bag (3), the supporting block (5) is fixedly connected with the cabinet (1). The temporary storage part (71) comprises a connecting block (711) and a limiting rod (712), the connecting block (711) is fixedly connected with the mounting plate (7), the limiting rod (712) is rotationally connected with one end of the connecting block (711) away from the mounting plate (7), the rotation axis of the limiting rod (712) is arranged along the length direction of the connecting block (711), the length of the limiting rod (712) is smaller than the inner diameter of the cloth bag (3), the inside of one end of the cloth bag (3) away from the mounting plate (7) is fixedly provided with a first limiting protrusion (31), and the lower end surface of the limiting rod (712) abuts against the first limiting protrusion (31). The connecting piece comprises a connecting ring (81) which is rotationally connected with the driving ring (8) in a coaxial mode, the connecting ring (81) is fixedly provided with a connecting protrusion (811) for abutting against the first limiting protrusion (31), and the connecting ring (81) and the limiting rod (712) are provided with clamping parts for clamping each other.

2. The impurity pulse removing device for feed raw material according to claim 1, characterized in that: The connecting block (711) is provided with a double-head motor (7111) inside, the two output shafts of the double-head motor (7111) correspond to the limiting rods (712) one by one and are fixedly connected with the corresponding limiting rods (712).

3. The impurity pulse removing device for feed raw material according to claim 1, characterized in that: The inside of one end of the cloth bag (3) away from the mounting plate (7) is fixedly provided with a second limiting protrusion (32), and a gap which is matched with the connecting protrusion (811) is arranged between the first limiting protrusion (31) and the second limiting protrusion (32).

4. The impurity pulse removing device for feed raw material according to claim 1, characterized in that: The flower plate (2) is fixedly provided with a plurality of vertical cylinders (22), the vertical cylinders (22) correspond to the circular holes (21) one by one, the center of the circular hole (21) is located on the axis of the vertical cylinder (22), the cover plate (6) is in a cylindrical shape and is arranged coaxially with the corresponding vertical cylinder (22), the outer diameter of the vertical cylinder (22) is matched with the inner diameter of the cover plate (6), and the branch pipes (41) are all communicated with the lower ends of the corresponding vertical cylinders (22).

5. A feedstock pulse impurity removal device according to claim 4, wherein: The upper end of the vertical cylinder (22) is provided with a sealing ring (221), the thickness of the sealing ring (221) gradually increases from top to bottom, the inner wall of the sealing ring (221) is fixedly connected with the vertical cylinder (22), and the outer wall thereof is transitioned in a slope shape from top to bottom.

6. A feedstock impurity pulse removal device according to claim 4, wherein: The vertical cylinder (22) is provided with a wind pressure sensor (9) fixed on the inner wall of the vertical cylinder (22), the cabinet (1) is provided with a plurality of micro air cylinders (61) corresponding to the cover (6), the piston rod of the micro air cylinder (61) is fixedly connected with the corresponding cover (6), the vertical cylinder (22) is provided with a detection control circuit, and the detection control circuit comprises an induction module (91), a comparison module (92) and a control module (93): The induction module (91) is used for sensing the wind pressure in the vertical cylinder (22) and outputting an induction signal; The comparison module (92) is electrically connected with the induction module (91), the comparison module (92) is used for receiving the induction signal of the induction module (91), when the comparison module (92) receives the induction signal, the voltage value corresponding to the induction signal is compared with a preset voltage value, if the voltage value of the induction signal is greater than the preset voltage value, the comparison module (92) outputs a starting signal; The control module (93) is electrically connected with the comparison module (92), the control module (93) is used for receiving the starting signal of the comparison module (92), when the control module (93) receives the starting signal, a control signal is outputted, and the control signal controls the opening and closing of the micro air cylinder (61).

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