A molecular sieve pelletizing machine and a pelletizing method

Abstract

The invention relates to the technical field of granulation equipment, and specifically discloses a molecular sieve pelletizing machine and a pelletizing method, comprising a mounting seat, a rotating drum obliquely arranged on the mounting seat, a feeding device and a driving source for driving the rotating drum to rotate counterclockwise, wherein the feeding device is arranged at the right end of the rotating drum for feeding materials into the rotating drum, and further comprises: a plurality of inner drums coaxially arranged with the rotating drum, the inner drums are interconnected and fixedly installed in the rotating drum, a feeding port and a discharging port are provided on the side surface of the inner drum, and the feeding port is located to the right of the discharging port; a distributor is arranged at the right end of the inner drum, and is used for allowing the materials fed into the rotating drum by the feeding device to enter the rotating drum and the inner drum respectively in equal proportions, a spray device sprays an adhesive into a cavity between the rotating drum and the inner drum, and at the same time, the rotating drum rotates to cause the mixed material between the rotating drum and the inner drum to roll to form granular materials, and the large granular materials circulate in the rotating drum and the inner drum for multiple times to control the growth rate of the large granular materials.

Description

Technical Field

[0001] The invention relates to the technical field of granulation equipment, and in particular to a molecular sieve pelletizing machine and a pelletizing method. Background Art

[0002] Molecular sieve is a kind of aluminosilicate material with regular pore structure, which is widely used in adsorption, separation, catalysis and ion exchange. Molecular sieve usually exists in the form of small balls. This is because the sphere has a large specific surface area and uniform pore distribution, which is conducive to improving its performance. Molecular sieve granulation is the process of converting molecular sieve powder into particles of a certain shape and size, which helps to improve the fluidity and mechanical strength of molecular sieve, and also facilitates loading and operation in industrial applications.

[0003] The Chinese patent application document with publication number CN117339470A discloses a novel drum granulator, which comprises: a frame, a barrel is installed on the top, and a worm screw elevator is hinged at one end of the bottom; the barrel is transversely installed on the frame, the barrel has a feed end and a discharge end, and a spiral feeding device is arranged inside the barrel; the worm screw elevator is hinged at one end of the bottom of the frame, and the worm screw elevator is used to adjust the inclination angle of the frame to meet the production needs of molecular sieves of different particle sizes; the spiral feeding device is transversely installed at the bottom of the barrel, and the spiral feeding device is used to uniformly transport the molecular sieve raw material powder into the barrel; a transmission device is connected to the barrel to drive the barrel to rotate; the worm screw elevator is located below the feed end.

[0004] In the prior art, when the drum granulator is granulating, since large particles are located in the upper layer, most of the adhesive sprayed by the spray device sticks to the large particles in the upper layer, which will cause the particle size growth rate of the large particles to be greater than the particle size growth rate of the small particles, so the particle size uniformity of the produced particles is poor. Summary of the invention

[0005] The invention provides a molecular sieve pelletizing machine and a pelletizing method, aiming to solve the problem in the related art that most of the adhesive sprayed by the spray device adheres to large particles in the upper layer.

[0006] A molecular sieve pelletizing machine comprises a mounting seat, a rotating drum tiltedly arranged on the mounting seat, a feeding device and a driving source for driving the rotating drum to rotate counterclockwise, wherein the feeding device is arranged at the right end of the rotating drum for feeding materials into the rotating drum, and further comprises:

[0007] A plurality of inner cylinders are coaxially arranged with the rotating cylinder, the inner cylinders are connected to each other and fixedly installed in the rotating cylinder, and a feed port and a discharge port are opened on the side of the inner cylinder, and the feed port is located to the right of the discharge port;

[0008] The material distributor is installed at the right end of the inner cylinder and is used to ensure that the materials fed into the rotating cylinder by the feeding device enter the rotating cylinder and the inner cylinder in equal proportions;

[0009] A scraper plate and a discharge plate, wherein one end of the scraper plate in the clockwise direction is installed on the outside of the feed port, and one end of the scraper plate in the counterclockwise direction has a gap A with the inner wall of the drum, and the discharge plate is installed on the inner side of the discharge port and covers the inner side surface of the discharge port, and there is a gap B between one end of the discharge plate in the counterclockwise direction and the discharge port;

[0010] The spray device is used to spray adhesive into the cavity between the rotating cylinder and the inner cylinder.

[0011] The effect is as follows: the spray device sprays adhesive into the cavity between the rotating drum and the inner drum, and at the same time, the rotating drum rotates to make the mixed material between the rotating drum and the inner drum roll to form granular material. When the granular material moves to the position of the scraper plate, the scraper plate scrapes the granular material on the upper layer onto the scraper plate, and then enters the inner drum along the scraper plate. When the granular material moves to the position of the scraper plate, the scraper plate scrapes the granular material on the upper layer into the inner drum, and the growth rate of the granular material in the inner drum is greatly reduced. When the granular material in the inner drum reaches the position of the discharge plate, the granular material on the lower layer in the inner drum falls into the rotating drum through the discharge port, so that the smaller particles continue to grow in the rotating drum, and then the larger particles in the rotating drum enter the second inner drum through the scraper plate, and the granular material on the lower layer in the second inner drum falls into the rotating drum through the discharge port again, and the cycle is repeated many times to control the growth rate of the large granular material.

[0012] Preferably, the spray device comprises a connecting pipe and a plurality of nozzles, the connecting pipe passes through the cavity between the rotating drum and the inner drum, and the nozzles are installed at the portion of the connecting pipe located inside the rotating drum.

[0013] Preferably, a baffle is provided on the inner side of the feed port, and there is a gap C between one end of the baffle in the counterclockwise direction and the feed port, which has the effect of preventing the material in the inner cylinder from leaking into the rotating cylinder through the feed port.

[0014] Preferably, the scraper plate is spiral in shape, and a rim for blocking material is provided on the right side of the scraper plate, which has the effect of preventing the material on the scraper plate from falling back into the drum.

[0015] Preferably, the mounting seat includes a base and a rotating seat hinged on the base, the rotating drum is rotatably mounted on the rotating seat, and a driving source 2 for adjusting the inclination angle of the rotating seat is installed on the base, the effect of which is to control the inclination angle of the rotating seat and the rotating drum, thereby controlling the rolling time of the granular material in the rotating drum.

[0016] Preferably, the distributor includes a conical block, which gradually decreases from the right end to the left end. A plurality of partition plates are arranged on the conical block in a circular array along the axis of the inner cylinder. The discharge end of the feeding device is located directly above the conical block, which has the effect that the powder slides into the inner cylinder through the slope of the conical block, and the conical block rotates during this process, so that a portion of the material falls from the conical block into the rotating cylinder.

[0017] Preferably, the feeding device comprises a telescopic discharge pipe, a discharge hole is provided at the left end of the bottom of the telescopic discharge pipe, and the discharge hole is located directly above the conical block.

[0018] A molecular sieve spheronization method comprises the following steps:

[0019] S1, uniformly mixing the powdered raw materials to form a mixture;

[0020] S2, feeding the mixed material to the distributor, and the distributor feeds the mixed material into the rotating drum and the inner drum in equal proportions;

[0021] S3, the spray device sprays the adhesive into the cavity between the rotating drum and the inner drum, and at the same time the rotating drum rotates to roll the mixed material to form granular material;

[0022] S4, when the granular material moves to the position of the scraper plate, the scraper plate scrapes the granular material on the upper layer into the inner cylinder;

[0023] S5, when the granules in the inner drum reach the position of the discharge plate, the granules in the lower layer fall into the rotating drum through the discharge port;

[0024] S6: The pellets move from the right end to the left end of the drum, and repeat steps S4 and S5 2-5 times, and are finally discharged from the left end of the drum.

[0025] The effect is that the spray device sprays adhesive into the cavity between the rotating drum and the inner drum, and at the same time the rotating drum rotates to make the mixed material between the rotating drum and the inner drum roll to form granular material. The large granular material circulates in the rotating drum and the inner drum for many times to control the growth rate of the large granular material.

[0026] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0027] After the powdered raw material falls onto the conical block from the discharge hole, the powder slides into the inner cylinder through the slope of the conical block, and in this process the conical block rotates, so that part of the material falls from the conical block into the rotating drum, and the spray device sprays the adhesive into the cavity between the rotating drum and the inner cylinder. At the same time, the rotating drum rotates to make the mixed material between the rotating drum and the inner cylinder roll to form granular material. When the granular material moves to the position of the scraper plate, the scraper plate scrapes the granular material on the upper layer onto the scraper plate, and then enters the inner cylinder along the scraper plate. When the granular material moves to the position of the scraper plate, the scraper plate scrapes the granular material on the upper layer into the inner cylinder. Due to the spray The adhesive sprayed from the head cannot enter the inner cylinder, so the growth rate of the particles in the inner cylinder is greatly reduced. When the particles in the inner cylinder reach the position of the discharge plate, the particles in the lower layer of the inner cylinder fall into the rotating cylinder through the discharge port, so that the smaller particles continue to grow in the rotating cylinder, and then the larger particles in the rotating cylinder enter the second inner cylinder through the scraper plate, and the particles in the lower layer of the second inner cylinder fall into the rotating cylinder through the discharge port, and this cycle is repeated many times until they are discharged from the left end of the rotating cylinder, thereby controlling the growth rate of the large particles. Therefore, the particle size of the molecular sieve particles produced is relatively uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0029] Figure 2 It is a right side view of the rotating cylinder and the inner cylinder in the present invention.

[0030] Figure 3 It is a schematic diagram of the structure of the distributor in the present invention.

[0031] Figure 4 It is a structural schematic diagram of the inner cylinder in the present invention.

[0032] Figure 5 It is a structural schematic diagram of the inner cylinder in the present invention from another perspective.

[0033] Reference numerals:

[0034] 1. Mounting seat; 11. Driving source 2; 12. Base; 13. Rotating seat; 2. Rotating drum; 3. Feeding device; 4. Driving source 1; 5. Inner drum; 51. Scraper plate; 52. Discharging plate; 53. Baffle; 6. Distributor; 61. Conical block; 62. Partition plate; 7. Spraying device; 71. Connecting pipe; 72. Nozzle. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figure 1-Figure 5As shown, a molecular sieve pelletizing machine includes a mounting base 1, a rotating drum 2, a feeding device 3, a driving source 4, a plurality of inner drums 5, a plurality of scraper plates 51, a plurality of discharge plates 52, a distributor 6 and a spray device 7. The rotating drum 2 is tilted on the mounting base 1, the driving source 4 is used to drive the rotating drum 2 to rotate counterclockwise, the feeding device 3 is arranged at the right end of the rotating drum 2 for feeding into the rotating drum 2, the inner drums 5 are interconnected and fixedly installed in the rotating drum 2, a feeding port and a discharge port are opened on the side of the inner drum 5, the feeding port is located on the right side of the discharge port, the scraper plate 51 and the discharge plate 52 are respectively installed on the outside of the feeding port and the inside of the discharge port, the distributor 6 is installed at the right end of the inner drum 5, and is used to make the materials fed into the rotating drum 2 by the feeding device 3 enter the rotating drum 2 and the inner drum 5 in equal proportions, and then the spray device 7 sprays adhesive into the cavity between the rotating drum 2 and the inner drum 5, and at the same time the rotating drum 2 rotates to roll the mixed material to form granular material.

[0037] The scraper plate 51 is in a spiral shape, and a rim for blocking the material is provided on the right side of the scraper plate 51. One end of the scraper plate 51 in the clockwise direction is installed on the outside of the feed port, and one end of the scraper plate 51 in the counterclockwise direction has a gap A with the inner wall of the drum 2. A baffle plate 53 is provided on the inner side of the feed port, and there is a gap C between one end of the baffle plate 53 in the counterclockwise direction and the feed port, so as to prevent the material in the inner drum 5 from leaking into the drum 2 through the feed port. The discharge plate 52 is installed on the inner side of the discharge port and covers the inner side surface of the discharge port. There is a gap C between one end of the discharge plate 52 in the counterclockwise direction and the discharge port. With a gap B, the drum 2 rotates counterclockwise. Since the large particles are located in the upper layer, when the particles move to the position of the scraper plate 51, the scraper plate 51 scrapes the large particles located in the upper layer into the inner drum 5. After the large particles are scraped into the inner drum 5, the adhesive sprayed by the spray device 7 can no longer adhere to the large particles, thereby slowing down the speed at which the large particles grow. When the particles in the inner drum 5 reach the position of the discharge plate 52, the smaller particles located in the lower layer fall into the drum 2 through the discharge port, thereby mixing with the particles in the drum 2, and repeating this cycle for multiple times, thereby avoiding excessive differences in the particle sizes of the final molecular sieve particles.

[0038] The spray device 7 includes a connecting pipe 71 and a plurality of nozzles 72. One end of the connecting pipe 71 is connected to a delivery pump and an adhesive storage tank. The other end of the connecting pipe 71 passes through the cavity between the rotating drum 2 and the inner drum 5. The nozzles 72 are installed at the portion of the connecting pipe 71 located inside the rotating drum 2. The positions of the nozzles 72 and the scraper plate 51 are staggered with each other, so as to prevent the adhesive sprayed from the nozzles 72 from being sprayed onto the scraper plate 51.

[0039] The mounting base 1 includes a driving source 11, a base 12 and a rotating base 13 hinged on the base 12. A gear ring and a swivel are coaxially fixedly installed on the rotating drum 2. A gear set meshing with the gear ring and a tugboat set abutting against the swivel are respectively installed at positions corresponding to the gear ring and the swivel on the rotating base 13. The driving source 14 is a motor, and the output end of the motor is connected to the input end of the gear set. The driving source 11 is a hydraulic rod, and the two ends of the hydraulic rod are respectively connected to the base 12 and the rotating base 13, so as to control the inclination angle of the rotating base 13 and the rotating drum 2, thereby controlling the rolling time of the granular material in the rotating drum 2.

[0040] The distributor 6 includes a conical block 61, which gradually decreases from the right end to the left end. The right end of the conical block 61 is rotatably connected to the rotating seat 13. A plurality of partition plates 62 are arranged on the conical block 61 in a circular array along the axis of the inner cylinder 5. The partition plates 62 are fixedly connected to the inner cylinder 5. The feeding device 3 includes a telescopic discharge pipe. A discharge hole is provided at the left end of the bottom of the telescopic discharge pipe. The discharge hole is located directly above the conical block 61. After the powdered raw material falls onto the conical block 61 from the discharge hole, the powder slides into the inner cylinder 5 through the slope of the conical block 61, and in this process the conical block 61 rotates, so that a portion of the material falls from the conical block 61 into the rotating cylinder 2. The telescopic discharge pipe adjusts its length to adjust the position of the powdered raw material falling on the conical block 61, thereby controlling the proportion of the powder falling into the inner cylinder 5 and the rotating cylinder 2.

[0041] Working principle: After the powdered raw material falls onto the conical block 61 from the discharge hole, the powder slides into the inner cylinder 5 through the slope of the conical block 61, and in this process the conical block 61 rotates, so that part of the material falls from the conical block 61 into the rotating cylinder 2, and the spray device 7 sprays the adhesive into the cavity between the rotating cylinder 2 and the inner cylinder 5. At the same time, the rotating cylinder 2 rotates to make the mixed material between the rotating cylinder 2 and the inner cylinder 5 roll to form granular material. When the granular material moves to the position of the scraper plate 51, the scraper plate 51 scrapes the granular material on the upper layer onto the scraper plate 51, and then enters the inner cylinder 5 along the scraper plate 51. Due to the adhesive sprayed by the nozzle 72 The particles in the inner cylinder 5 cannot enter the inner cylinder 5, so the growth rate of the particles in the inner cylinder 5 is greatly reduced. When the particles in the inner cylinder 5 reach the position of the discharge plate 52, the particles in the lower layer of the inner cylinder 5 fall into the rotating cylinder 2 through the discharge port, so that the smaller particles continue to grow in the rotating cylinder 2. Then, the larger particles in the rotating cylinder 2 enter the second inner cylinder 5 through the scraper plate 51, and the particles in the lower layer of the second inner cylinder 5 fall into the rotating cylinder 2 through the discharge port. This cycle is repeated many times until they are discharged from the left end of the rotating cylinder 2, thereby controlling the growth rate of the large particles. Therefore, the particle size of the molecular sieve particles produced is relatively uniform.

[0042] A molecular sieve spheronization method comprises the following steps:

[0043] S1, uniformly mixing the powdered raw materials to form a mixture;

[0044] S2, feeding the mixed material to the distributor 6, and the distributor 6 feeds the mixed material into the rotating drum 2 and the inner drum 5 in equal proportions;

[0045] S3, the spray device 7 sprays the adhesive into the cavity between the drum 2 and the inner drum 5, while the drum 2 rotates to roll the mixed material to form granular material;

[0046] S4, when the granular material moves to the position of the scraper plate 51, the scraper plate 51 scrapes the granular material on the upper layer into the inner tube 5;

[0047] S5, when the granules in the inner cylinder 5 reach the position of the discharge plate 52, the granules in the lower layer fall into the rotating cylinder 2 through the discharge port;

[0048] S6: The granular material moves from the right end to the left end of the drum 2, and cycles through steps S4 and S5 2-5 times, and is finally discharged from the left end of the drum 2.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A molecular sieve pelletizing machine, comprising a mounting seat, a rotating drum tilted on the mounting seat, a feeding device and a driving source for driving the rotating drum to rotate counterclockwise, wherein the feeding device is arranged at the right end of the rotating drum for feeding materials into the rotating drum, characterized in that: Also includes: A plurality of inner cylinders are coaxially arranged with the rotating cylinder, the inner cylinders are connected to each other and fixedly installed in the rotating cylinder, and a feed port and a discharge port are opened on the side of the inner cylinder, and the feed port is located to the right of the discharge port; The material distributor is installed at the right end of the inner cylinder and is used to ensure that the materials fed into the rotating cylinder by the feeding device enter the rotating cylinder and the inner cylinder in equal proportions; A scraper plate and a discharge plate, wherein one end of the scraper plate in the clockwise direction is installed on the outside of the feed port, and one end of the scraper plate in the counterclockwise direction has a gap A with the inner wall of the drum, and the discharge plate is installed on the inner side of the discharge port and covers the inner side surface of the discharge port, and there is a gap B between one end of the discharge plate in the counterclockwise direction and the discharge port; A spray device for spraying adhesive into the cavity between the rotating drum and the inner drum; The scraper plate is in a spiral shape, and a rim for blocking the material is provided on the right side of the scraper plate; The material distributor comprises a conical block, which gradually decreases from the right end to the left end. A plurality of material separators are arranged in a circular array along the axis of the inner cylinder on the conical block, and the material separators are fixedly connected to the inner cylinder. The discharge end of the feeding device is located directly above the conical block. The spray device includes a connecting pipe and a plurality of nozzles, the connecting pipe passes through the cavity between the rotating drum and the inner drum, and the nozzles are installed on the part of the connecting pipe located in the rotating drum; The feeding device comprises a telescopic discharge pipe, a discharge hole is provided at the left end of the bottom of the telescopic discharge pipe, and the discharge hole is located just above the conical block.

2. The molecular sieve pelletizing machine according to claim 1, characterized in that: A baffle is disposed inside the feed port, and a gap C exists between one end of the baffle in the counterclockwise direction and the feed port.

3. The molecular sieve pelletizing machine according to claim 1, characterized in that: The mounting seat comprises a base and a rotating seat hinged on the base, the rotating drum is rotatably mounted on the rotating seat, and a driving source 2 for adjusting the tilt angle of the rotating seat is mounted on the base.

4. A molecular sieve spheronization method, characterized in that: The molecular sieve pelletizing machine according to any one of claims 1 to 3 comprises the following steps: S1, uniformly mixing the powdered raw materials to form a mixture; S2, feeding the mixed material to the distributor, and the distributor feeds the mixed material into the rotating drum and the inner drum in equal proportions; S3, the spray device sprays the adhesive into the cavity between the rotating drum and the inner drum, and at the same time the rotating drum rotates to roll the mixed material to form granular material; S4, when the granular material moves to the position of the scraper plate, the scraper plate scrapes the granular material on the upper layer into the inner cylinder; S5, when the granules in the inner drum reach the position of the discharge plate, the granules in the lower layer fall into the rotating drum through the discharge port; S6: The pellets move from the right end to the left end of the drum, and repeat steps S4 and S5 2-5 times, and are finally discharged from the left end of the drum.

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