Superfine powder crushing system

Abstract

The utility model discloses a superfine powder crushing system, which relates to the technical field of polyacrylamide processing and comprises a crushing and grinding machine, a cyclone separator, an ultrasonic vibrating screen, a dust removal box and an induced draft fan. The crushing and grinding machine, the cyclone separator, the airlock, the dust removal box, the induced draft fan, the ultrasonic vibrating screen and the flat table type electronic scale cooperate to form a complete grinding, sieving, airflow conveying, packaging and weighing system, continuous operation production of polyacrylamide can be achieved, the production efficiency is effectively improved, and energy consumption and labor intensity are reduced; the crushing and grinding machine can grind polyacrylamide with large granularity into powder with small granularity, then the materials are settled and fall by utilizing centrifugal force generated by rotating airflow of the cyclone separator, the settled powder is accumulated at the discharging port end of the cyclone separator, the discharging operation is controlled through the air closing machine, the powder falls into the ultrasonic vibrating screen, and the powder is discharged through the ultrasonic vibrating screen. And further screening by using an ultrasonic vibrating screen, so that the granularity of the polyacrylamide meets the production standard.

Description

Technical Field

[0001] The utility model relates to the technical field of polyacrylamide processing, in particular to an ultrafine powder pulverizing system. Background Art

[0002] Polyacrylamide (PAM) is a linear, water-soluble polymer with diverse properties, including flocculation, thickening, and drag reduction. It is widely used in water treatment, petroleum, papermaking, textiles, agriculture, and other fields. The particle size of currently purchased PAM raw materials is approximately 20 mesh, and for use, they must be ground into an ultrafine powder of approximately 100 mesh (screening rate ≥95%). Currently, PAM is mostly crushed and ground using conventional pulverizing equipment. However, the resulting particles have a low mesh pass rate, resulting in a low overall screening rate. Furthermore, existing pulverizing equipment cannot form a complete pneumatic conveying system, preventing continuous material production. The material must undergo multiple crushing, grinding, and screening operations, resulting in low production efficiency. Furthermore, the material must be transferred between multiple workstations, which increases labor intensity and material loss. Utility Model Content

[0003] The purpose of the present invention is to provide an ultrafine powder pulverizing system in order to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultrafine powder pulverizing system, comprising a crushing grinder, a cyclone separator, an ultrasonic vibrating screen, a dust removal box and an induced draft fan, the cyclone separator is located above the crushing grinder, the feed end of the cyclone separator is connected to the discharge end of the crushing grinder by a pipeline, and the discharge end of the cyclone separator is equipped with a fan for controlling the discharge; the ultrasonic vibrating screen is located below the fan and is connected to the fan; a material bagging area is provided below the ultrasonic vibrating screen, and a platform electronic scale is provided below the material bagging area; the dust removal box is located on one side of the cyclone separator, and the air inlet of the dust removal box is connected to the air outlet at the top of the cyclone separator through a pipeline; the induced draft fan is installed on one side of the dust removal box, and the air outlet of the dust removal box is connected to the induced draft fan through a pipeline.

[0005] As a further solution of the present invention: the crushing grinder includes a base, a container assembly is placed at one end of the base, a first motor is installed at the other end of the base, a grinding assembly is installed inside the container assembly, which is used to shear and crush large particles of polyacrylamide, and an air screen assembly is provided above the container assembly to screen the crushed polyacrylamide powder so that powder with qualified mesh size can enter the cyclone separator.

[0006] As a further solution of the present invention: the container assembly includes a barrel body, which is a cylindrical container with an upper opening, a wind-blocking baffle is provided in the middle of the inner cavity of the barrel body, and the upper open end of the barrel body is sealed with an upper cover, a connecting tube is provided in the middle of the top of the upper cover, and a drainage elbow is integrally formed on the side wall of the connecting tube, one side of the upper end of the barrel body is connected to a feed port, and the other side of the upper end of the barrel body is connected to an air inlet pipe.

[0007] As a further solution of the present invention: a through groove connected to the connecting tube is opened on the top of the upper cover, the connecting tube is connected to the drainage elbow, the top of the connecting tube is a closed end, and the drainage elbow is connected to the feed end of the cyclone separator through a pipeline.

[0008] As a further solution of the present invention: the grinding assembly includes a grinding disc, which is located above the wind-blocking baffle, and the bottom of the wind-blocking baffle is rotatably connected to a first drive shaft, and the first drive shaft is rotatably connected to the wind-blocking baffle through a bearing, and a plurality of machine columns are arranged in a circular array at the outer edge of the upper surface of the grinding disc, and a recirculation ring is provided at the lower end of the upper cover, and the recirculation ring is located in the barrel body, and a first gear ring is sleeved on the outer wall of the lower end of the recirculation ring, and a second gear ring is connected to the upper inner cavity wall of the barrel body, and a plurality of connecting plates in an equidistant circular array are provided between the first gear ring and the second gear ring, and the connecting plate is fixedly connected to the upper inner cavity wall of the barrel body.

[0009] As a further solution of the present invention: the machine column is located between the first gear ring and the second gear ring, a gap is left between the recirculation ring and the grinding disc, and the first gear ring is fixedly connected to a plurality of connecting plates.

[0010] As a further solution of the present invention: the air inlet pipe and the feed port are both located above the second gear ring.

[0011] As a further solution of the present invention: the first drive shaft and the first motor are connected through a synchronous pulley assembly.

[0012] As a further solution of the present invention: the wind screen assembly includes a second motor installed on the top of the connecting cylinder, the output end of the second motor is fixedly connected to the second drive shaft through a coupling, the second drive shaft is located inside the connecting cylinder, and the upper end of the second drive shaft is rotatably connected to the top wall of the connecting cylinder through a bearing, and the lower end of the second drive shaft is installed with a wind screen impeller, and the discharge port of the wind screen impeller is located directly below the connecting cylinder.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model forms a complete grinding, screening, air flow conveying, packaging and weighing system through the coordinated cooperation of a crushing grinder, a cyclone separator, a blower, a dust removal box, an induced draft fan, an ultrasonic vibrating screen and a platform electronic scale, which can realize the continuous production of polyacrylamide, effectively improve production efficiency, and reduce energy consumption and labor intensity.

[0015] The crushing and grinding machine innovatively adopts the structure of inner and outer double gear rings, which not only protects the recirculation ring, reduces the degree of erosion and wear, and prolongs its service life; and sets the air inlet pipe above the first and second gear rings, which has stronger operating stability than the lower air inlet mode in the existing technology, and will not cause the material to flow back into the air inlet pipe when the air supply in the device stops.

[0016] The crushing grinder can grind polyacrylamide with large particle size into powder with small particle size, and then use the centrifugal force generated by the rotating airflow of the cyclone separator to make the material settle and fall. The settled powder accumulates at the discharge end of the cyclone separator, and the unloading operation is controlled by turning off the fan, allowing the powder to fall into the ultrasonic vibrating screen, and further screening is carried out using the ultrasonic vibrating screen to ensure that the particle size of the polyacrylamide meets the production standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the crushing and grinding machine of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation structure of the synchronous pulley assembly of the crushing and grinding machine of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the barrel of the crushing and grinding machine of the utility model;

[0021] Figure 5 This is a schematic structural diagram of the grinding assembly of the crushing and grinding machine of the utility model.

[0022] In the figure: 1. Crusher; 101. Base; 102. Container assembly; 1021. Barrel; 1022. Upper cover; 1023. Connecting tube; 1024. Drainage elbow; 1025. Wind baffle; 1026. Feed port; 1027. Air inlet pipe; 103. First motor; 104. Synchronous pulley assembly; 105. Grinding assembly; 1051. Grinding disc; 1052. First drive shaft; 1053. Machine column; 1054. Return ring; 1055. First gear ring; 1056. Second gear ring; 1057. Connecting plate; 106. Wind screen assembly; 1061. Second motor; 1062. Second drive shaft; 1063. Wind screen impeller; 2. Cyclone separator; 3. Fan shut-off fan; 4. Dust removal box; 5. Induced draft fan; 6. Ultrasonic vibrating screen; 7. Platform electronic scale. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 5 In the embodiment of the present invention, the ultrafine powder pulverizing system includes a crushing and grinding machine 1 for grinding granular polyacrylamide into powder, a cyclone separator 2, an ultrasonic vibrating screen 6, a dust removal box 4 and an induced draft fan 5. The cyclone separator 2 is located above the crushing and grinding machine 1. The feeding end of the cyclone separator 2 is connected to the discharging end of the crushing and grinding machine 1 through a pipeline. The discharging end of the cyclone separator 2 is equipped with a shut-off fan 3 for controlling the discharge of the material. The ultrasonic vibrating screen 6 is located below the shut-off fan 3 and is connected to the shut-off fan 3 to receive the powder released by the shut-off fan 3 to screen out the suitable powder. Powder with a certain mesh size; a bagging area for finished materials is provided below the ultrasonic vibrating screen 6, and a platform electronic scale 7 is provided below the bagging area for finished materials; a dust removal box 4 is located on one side of the cyclone separator 2, and the air inlet of the dust removal box 4 is connected to the air outlet at the top of the cyclone separator 2 via a pipe, which is used to filter out the medium-sized dust particles discharged by the cyclone separator 2; an induced draft fan 5 is installed on one side of the dust removal box 4, and the air outlet of the dust removal box 4 is connected to the induced draft fan 5 via a pipe, which is used to generate negative pressure inside the dust removal box 4 to suck in and filter the airflow discharged by the cyclone separator 2. The induced draft fan 5 can provide suction for the entire system, allowing the material to smoothly enter the cyclone separator 2 from the crushing and grinding mill 1 and achieve sedimentation and filtration operations.

[0025] In this embodiment, a complete grinding, screening, air flow conveying, packaging and weighing system is formed by the coordinated cooperation of a crushing and grinding machine 1, a cyclone separator 2, a blower 3, a dust removal box 4, an induced draft fan 5, an ultrasonic vibrating screen 6 and a platform electronic scale 7. The crushing and grinding machine 1 can grind polyacrylamide with large particle size into ultrafine powder with small particle size. Then, the centrifugal force generated by the rotating airflow of the cyclone separator 2 is used to achieve the sedimentation of the powder in the pipeline. The unloading operation is controlled by the blower 3 (the blower 3 can prevent the external airflow from reversely flowing into the inner cavity of the cyclone separator 2 and only allows the settled powder to pass through). Then, the powder falls into the ultrasonic vibrating screen 6 and is further screened by the ultrasonic vibrating screen 6 to ensure that the particle size of the polyacrylamide meets the production standard. In addition, this solution also filters and purifies the airflow discharged from the cyclone separator 2 by the dust removal box 4 and the induced draft fan 5 to prevent the airflow containing a small amount of dust from being discharged to the outside world, thereby affecting the external environment.

[0026] Please refer to Figures 2 to 5 The crushing and grinding machine 1 includes a base 101, a container assembly 102 is placed at one end of the base 101, a first motor 103 is installed at the other end of the base 101, a grinding assembly 105 is installed inside the container assembly 102, which is used to shear and crush large particles of polyacrylamide, and an air screen assembly 106 is provided above the container assembly 102, which is used to screen the crushed polyacrylamide powder so that powder with qualified mesh size can enter the cyclone separator 2.

[0027] The container assembly 102 includes a barrel body 1021, which is a cylindrical container with an upper opening. A wind-blocking baffle 1025 is provided in the middle of the inner cavity of the barrel body 1021, and the upper open end of the barrel body 1021 is sealed with an upper cover 1022. A connecting tube 1023 is provided in the middle of the top of the upper cover 1022, and a drainage elbow 1024 is integrally formed on the side wall of the connecting tube 1023. A feed port 1026 is connected to one side of the upper end of the barrel body 1021, and an air inlet pipe 1027 is connected to the other side of the upper end of the barrel body 1021.

[0028] The top of the upper cover 1022 is provided with a through slot connected to the connecting tube 1023, the connecting tube 1023 is connected to the drainage elbow 1024, the top of the connecting tube 1023 is a closed end, and the drainage elbow 1024 is connected to the feed end of the cyclone separator 2 through a pipeline.

[0029] The grinding assembly 105 includes a grinding disc 1051, which is located above the wind-blocking baffle 1025. The bottom of the wind-blocking baffle 1025 is rotatably connected to a first drive shaft 1052. The first drive shaft 1052 is rotatably connected to the wind-blocking baffle 1025 through a bearing. A plurality of machine columns 1053 are arranged in a circular array at the outer edge of the upper surface of the grinding disc 1051. A reflow ring 1054 is provided at the lower end of the upper cover 1022. The reflow ring 1054 is located in the barrel body 1021. The outer wall of the lower end of the reflow ring 1054 is sleeved with a first gear ring 1055. A second gear ring 1056 is connected to the upper inner cavity wall of the barrel body 1021. A plurality of connecting plates 1057 in an equidistant circular array are provided between the first gear ring 1055 and the second gear ring 1056. The connecting plate 1057 is fixedly connected to the upper inner cavity wall of the barrel body 1021.

[0030] The machine column 1053 is located between the first gear ring 1055 and the second gear ring 1056 , a gap is left between the recirculation ring 1054 and the grinding disc 1051 , and the first gear ring 1055 is fixedly connected to a plurality of connecting plates 1057 .

[0031] The air inlet pipe 1027 and the feed port 1026 are both located above the second gear ring 1056 .

[0032] The first drive shaft 1052 is connected to the first motor 103 via a synchronous pulley assembly 104 .

[0033] The wind screen assembly 106 includes a second motor 1061 installed on the top of the connecting cylinder 1023. The output end of the second motor 1061 is fixedly connected to the second drive shaft 1062 through a coupling. The second drive shaft 1062 is located inside the connecting cylinder 1023, and the upper end of the second drive shaft 1062 is rotatably connected to the top wall of the connecting cylinder 1023 through a bearing. The lower end of the second drive shaft 1062 is equipped with a wind screen impeller 1063, and the discharge port of the wind screen impeller 1063 is located directly below the connecting cylinder 1023.

[0034] In this embodiment: the polyacrylamide raw material particles to be ground are poured into the barrel body 1021 through the feed port 1026, and then the first drive shaft 1052 is driven to rotate by the first motor 103. The rotating first drive shaft 1052 will drive the grinding disc 1051 to rotate, thereby forcing the machine column 1053 to stir the polyacrylamide particles at high speed. After being stirred, the particles will shear and collide with the first gear ring 1055 and the second gear ring 1056 on both sides, so that the large particles are sheared into powder with small particle size; at the same time, the second motor 1061 will also drive the wind screen impeller 1063 to rotate at high speed, and the sheared small particle size powder will be affected by the air flow and pass through the gap between the reflux ring 1054 and the grinding disc 1051. The powder particles with a composite particle size standard will pass through the gap between the fan blades on the side of the wind screen impeller 1063, enter the wind screen impeller 1063, and then enter the drainage elbow 1024, and be transported to the cyclone separator 2 through the pipeline for sedimentation.

[0035] Powders with larger particle sizes will not be able to pass through the gaps between the wind blades on the side of the wind screen impeller 1063, and will continue to fall onto the grinding disc 1051. Under the centrifugal force of the grinding disc 1051 and the collision of the machine column 1053, they will be pushed to the space between the first gear ring 1055 and the second gear ring 1056 for shearing and grinding again. This reciprocating shearing and grinding will effectively ensure the qualified rate of polyacrylamide particle grinding and improve the grinding efficiency.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Ultrafine powder crushing system, characterized by: The invention comprises a crushing and grinding machine (1), a cyclone separator (2), an ultrasonic vibrating screen (6), a dust removal box (4) and an induced draft fan (5), wherein the cyclone separator (2) is located above the crushing and grinding machine (1), the feed end of the cyclone separator (2) is connected to the discharge end of the crushing and grinding machine (1) through a pipeline, and the discharge end of the cyclone separator (2) is equipped with a fan (3) for controlling the discharge; the ultrasonic vibrating screen (6) is located below the fan (3) and is connected to the fan (3) are connected; a bagging area is provided below the ultrasonic vibrating screen (6), and a platform electronic scale (7) is provided below the bagging area; the dust removal box (4) is located on one side of the cyclone separator (2), and the air inlet of the dust removal box (4) is connected to the air outlet at the top of the cyclone separator (2) through a pipe; the induced draft fan (5) is installed on one side of the dust removal box (4), and the air outlet of the dust removal box (4) is connected to the induced draft fan (5) through a pipe.

2. The ultrafine powder pulverizing system according to claim 1, characterized in that: The crushing and grinding machine (1) comprises a base (101), a container assembly (102) is placed at one end of the base (101), a first motor (103) is installed at the other end of the base (101), a grinding assembly (105) is installed inside the container assembly (102), and an air screen assembly (106) is provided above the container assembly (102).

3. The ultrafine powder pulverizing system according to claim 2, characterized in that: The container assembly (102) comprises a barrel body (1021), the barrel body (1021) being a cylindrical container with an upper opening, a wind-blocking baffle (1025) being provided in the middle of the inner cavity of the barrel body (1021), and an upper cover (1022) being sealed at the upper open end of the barrel body (1021), a connecting tube (1023) being provided in the middle of the top end of the upper cover (1022), a drainage elbow (1024) being integrally formed on the side wall of the connecting tube (1023), a feed port (1026) being connected to one side of the upper end of the barrel body (1021), and an air inlet pipe (1027) being connected to the other side of the upper end of the barrel body (1021).

4. The ultrafine powder pulverizing system according to claim 3, characterized in that: A through slot communicating with the connecting tube (1023) is provided on the top of the upper cover (1022); the connecting tube (1023) is connected to the drainage elbow (1024); the top of the connecting tube (1023) is a closed end; the drainage elbow (1024) is connected to the feed end of the cyclone separator (2) via a pipeline.

5. The ultrafine powder pulverizing system according to claim 4, characterized in that: The grinding assembly (105) includes a grinding disc (1051), the grinding disc (1051) is located above the wind-blocking baffle (1025), the bottom of the wind-blocking baffle (1025) is rotatably connected to a first drive shaft (1052), the first drive shaft (1052) is rotatably connected to the wind-blocking baffle (1025) via a bearing, a plurality of machine columns (1053) are arranged in a circular array at the outer edge of the upper surface of the grinding disc (1051), and a recirculation ring is provided at the lower end of the upper cover (1022). (1054), the recirculation ring (1054) is located in the barrel body (1021), the outer wall of the lower end of the recirculation ring (1054) is sleeved with a first gear ring (1055), the inner wall of the upper end of the barrel body (1021) is connected to a second gear ring (1056), and a plurality of equidistant annular array connecting plates (1057) are provided between the first gear ring (1055) and the second gear ring (1056), and the connecting plates (1057) are fixedly connected to the inner wall of the upper end of the barrel body (1021).

6. The ultrafine powder pulverizing system according to claim 5, characterized in that: The machine column (1053) is located between the first gear ring (1055) and the second gear ring (1056), a gap is left between the recirculation ring (1054) and the grinding disc (1051), and the first gear ring (1055) is fixedly connected to a plurality of connecting plates (1057).

7. The ultrafine powder pulverizing system according to claim 6, characterized in that: The air inlet pipe (1027) and the feed port (1026) are both located above the second gear ring (1056).

8. The ultrafine powder pulverizing system according to claim 7, characterized in that: The first drive shaft (1052) and the first motor (103) are connected in transmission via a synchronous pulley assembly (104).

9. The ultrafine powder pulverizing system according to claim 8, characterized in that: The wind screen assembly (106) includes a second motor (1061) installed on the top of the connecting cylinder (1023), the output end of the second motor (1061) is fixedly connected to the second drive shaft (1062) through a coupling, the second drive shaft (1062) is located inside the connecting cylinder (1023), and the upper end of the second drive shaft (1062) is rotatably connected to the top wall of the connecting cylinder (1023) through a bearing, and the lower end of the second drive shaft (1062) is installed with a wind screen impeller (1063), and the discharge port of the wind screen impeller (1063) is located directly below the connecting cylinder (1023).

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