A crushing device for the production of a powder accelerator

Abstract

The utility model relates to a kind of production powder accelerator's crushing device. Including support, first-stage pulverizing box is installed on it, hammer piece crushing assembly and arc screen two are installed in first-stage pulverizing box inner cavity, still including first rotary drive component, still including second-stage pulverizing box, feeding guide component, shunt component and two comminuting rollers of cooperation are installed in second-stage pulverizing box;Second rotary drive component is further included;Feeding guide component includes material collecting hopper, adjustable material blocking mechanism of discharge port, and intermediate baffle plate;Discharge hopper is installed in the discharge port of second-stage pulverizing box, ventilation opening is opened on the sidewall of discharge hopper, suction assembly is installed at ventilation opening, and dust collecting filter screen installed at ventilation opening is further included.The utility model can carry out two-stage compound crushing operation to accelerator raw material, crushing is sufficient and work efficiency is high, and when secondary pulverization, material is shunted, so that material is evenly distributed along the axial direction of comminuting roller, avoid material accumulation and affect work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of quick-setting agent production equipment, and in particular relates to a crushing device for producing powder quick-setting agents. Background Technology

[0002] Concrete is a general term for engineering composite materials in which aggregates are bound together by cementing materials. Adding a quick-setting agent to concrete allows it to solidify quickly. The quick-setting agent is mainly made of bauxite, soda ash and quicklime in a certain proportion. Bauxite, soda ash and quicklime are usually in solid and block form. Before mixing, the above raw materials need to be crushed and ground.

[0003] In the processing of accelerator raw materials, a crushing device is required to crush the materials, followed by sieving to process them into powder. This process is convenient and, moreover, using mechanized production equipment can greatly improve the production efficiency of accelerators. Traditional crushing devices have a relatively simple structure, mainly using a pair of counter-rotating crushing rollers to crush the materials fed into the device.

[0004] However, in actual operation, the following drawbacks were found when using the traditional crushing device to pulverize materials: First, traditional crushing devices only have one pair of crushing rollers, meaning that only a single crushing operation can be performed on the material during actual operation. This limited crushing method easily leads to insufficient material crushing, resulting in poor crushing effect and low work efficiency. Second, the traditional crushing device lacks a diversion structure, causing material to easily accumulate between the two crushing rollers instead of being distributed along the axial direction of the rollers, affecting the work efficiency of material crushing. Therefore, it is urgent to design a crushing device for producing powdered quick-setting agents to solve the above problems. Utility Model Content

[0005] This invention provides a crushing device for producing powdered accelerators with a reasonable structural design to solve the technical problems existing in the prior art. This invention can perform a two-stage compound crushing operation on the accelerator raw materials, resulting in thorough crushing and high working efficiency. During the secondary crushing, the material is diverted, ensuring uniform distribution along the axial direction of the crushing rollers and preventing material accumulation that would affect working efficiency.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A crushing device for producing powdered quick-setting agents includes a support frame, a primary crushing box with an inlet and an outlet installed on the support frame, a hammer crushing assembly and an arc-shaped screen installed inside the primary crushing box, a first rotary drive assembly for driving the hammer crushing assembly to rotate, and a funnel-shaped intermediate discharge hopper installed at the outlet of the primary crushing box; it also includes a secondary crushing box whose inlet is connected to the outlet of the intermediate discharge hopper, and a matching feeding guide assembly and a diversion assembly installed at the inlet of the secondary crushing box. The feeding guide assembly includes two cooperating crushing rollers below the discharge port; it also includes a second rotary drive assembly for driving the two crushing rollers to rotate in opposite directions; the feeding guide assembly includes a hopper mounted on the secondary crushing box and located above the middle of the two crushing rollers, an adjustable baffle mechanism for the discharge port above the diversion assembly, and an intermediate baffle plate that is clearance-fitted to the diversion assembly between the hopper and the baffle mechanism; a discharge hopper is installed at the discharge port of the secondary crushing box, a vent is provided on the side wall of the discharge hopper, a dust collection assembly is installed at the vent, and a dust collection filter is installed at the vent.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a crushing device for producing powdered quick-setting agents. Through the set hammer crushing component and the first rotary drive component, the material can be crushed by impact force, thereby achieving primary crushing of the material. Through the set two crushing rollers and the second rotary drive component, the material can be crushed by the squeezing force and grinding shear force generated by relative rotation, thereby achieving secondary crushing of the material. Finally, a two-stage compound crushing operation is achieved, which is thorough and efficient. Through the set feeding guide component and diversion component, the material can be diverted during secondary crushing, so that the material is evenly distributed along the axial direction of the crushing rollers, avoiding material accumulation and affecting work efficiency.

[0008] Preferably, the material blocking mechanism includes a front baffle and a rear baffle installed opposite to each other at the feed inlet of the secondary crushing box. An adjusting rod is provided at the lower part of the front baffle and is rotatably connected to the secondary crushing box. An adjustable material gate is fixed to the adjusting rod. The outer end of the adjustable material gate is bent and fits with the roller surface of the diversion component. The mechanism also includes an adjusting swing arm fixed to one end of the adjusting rod. A locking knob is installed on the adjusting swing arm. The mechanism also includes a positioning locking plate fixed to the outer wall of the secondary crushing box. The positioning locking plate has several threaded holes distributed circumferentially. The adjusting swing arm and the positioning locking plate are locked together by locking knobs passing through the threaded holes.

[0009] Preferably, the diversion assembly includes a diversion roller rotatably connected to the secondary crushing chamber and arranged parallel to the crushing roller, and a diversion motor installed on the secondary crushing chamber for driving the diversion roller to rotate.

[0010] Preferably, the dust collection assembly includes a dust collection fan installed in one of the two crushing rollers, an air intake pipe installed at the air intake of the dust collection fan and connected to a vent on the discharge hopper, and an exhaust pipe installed at the air outlet of the dust collection fan and connected to a dust removal device.

[0011] Preferably, the first rotary drive assembly includes a primary drive motor mounted on the support, and a primary transmission pair installed between the hammer crushing assembly and the primary drive motor; the second rotary drive assembly includes a secondary drive motor mounted on the support, a secondary transmission pair installed between the secondary drive motor and a crushing roller, and transmission gears keyed to the ends of each crushing roller, with the two transmission gears meshing.

[0012] Preferably, the hammer crushing assembly includes a hammer frame shaft arranged laterally and rotatably connected to the primary crushing box. A hammer mounting frame is installed on the hammer crushing assembly. Several hammer pins are installed on the hammer mounting frame, which are parallel to the hammer frame shaft and distributed circumferentially. Several hammers are fixedly connected to each hammer pin.

[0013] Preferably, the device further includes two guide blocks installed at the discharge port of the secondary crushing box. The two guide blocks are arranged opposite each other and their opposite surfaces are inclined surfaces used for guiding materials. The device also includes an arc-shaped screen set below the two guide blocks, and an inspection window corresponding to the arc-shaped screen is opened on the discharge hopper. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the hammer crushing assembly in this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the feeding guide component and the diversion component in this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the dust collection component in this utility model.

[0018] In the diagram: 1. Discharge hopper; 2. Dust collection filter screen; 3. Arc-shaped screen; 4. Crushing roller; 5. Guide block; 6. Dust collection assembly; 6-1. Dust collection fan; 6-2. Air outlet pipe; 6-3. Air suction pipe; 7. Feeding guide assembly; 7-1. Collection hopper; 7-2. Intermediate baffle plate; 7-3. Adjustable material gate; 7-4. Adjustable swing arm; 7-5. Adjustable rotating rod; 7-6. Front baffle gate; 7-7. Rear baffle plate; 7-8. Positioning locking plate; 8 1. Diverting assembly; 8-1. Diverting motor; 8-2. Diverting roller; 9. Secondary transmission pair; 10. Secondary drive motor; 11. Intermediate discharge hopper; 12. Secondary crushing box; 13. Arc screen II; 14. Primary crushing box; 15. Reinforcing rod; 16. Hammer crushing assembly; 16-1. Hammer frame shaft; 16-2. Hammer frame mounting; 16-3. Hammer blade; 16-4. Hammer pin shaft; 17. Primary transmission pair; 18. Primary drive motor; 19. Support. Detailed Implementation

[0019] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0020] Please see Figure 1 The crushing device for producing powdered quick-setting agent of this utility model includes a support 19, a primary crushing box 14 with a feed inlet and a discharge outlet installed on the support 19, a hammer crushing assembly 16 and an arc-shaped screen 13 installed in the inner cavity of the primary crushing box 14, a first rotary drive assembly for driving the hammer crushing assembly 16 to rotate, and a funnel-shaped intermediate discharge hopper 11 installed at the discharge outlet of the primary crushing box 14.

[0021] like Figure 2 As shown, the hammer crushing assembly 16 includes a hammer frame shaft 16-1 arranged laterally and rotatably connected to the primary crushing box 14. A mounting hammer frame 16-2 is installed on the hammer crushing assembly 16. Several hammer pins 16-4, arranged parallel to the hammer frame shaft 16-1 and distributed circumferentially, are installed on the mounting hammer frame 16-2. Several hammers 16-3 are fixedly connected to each hammer pin 16-4. In addition, the hammer frame shaft 16-1 is rotatably connected to the bracket 19 via a seat bearing. The mounting hammer frame 16-2 includes two discs fixedly connected to the hammer frame shaft 16-1. Several connecting rods are arranged between the two discs to fix them together. The connecting rods are evenly distributed circumferentially.

[0022] like Figure 1As shown, for ease of subsequent maintenance, the primary crushing box 14 includes an upper box and a lower box that are pivotally connected. A locking element is installed between the upper box and the lower box to lock them together. A feed inlet is provided on the upper box. In addition, several reinforcing rods 15 are installed on the inner wall of the upper box to strengthen the upper box and cooperate with the hammer crushing assembly 16 to perform material crushing operations.

[0023] In addition, the aforementioned first rotary drive assembly includes a primary drive motor 18 mounted on the bracket 19, and a primary transmission pair 17 mounted between the hammer crushing assembly 16 and the primary drive motor 18. The primary transmission pair 17 is a pulley transmission pair, which includes a driving pulley keyed to the output shaft of the primary drive motor 18, and a driven pulley keyed to the hammer frame shaft 16-1. A transmission belt is provided on the support of the driving pulley and the driven pulley.

[0024] like Figure 1 As shown, this embodiment also includes a secondary crushing box 12 whose inlet is connected to the outlet of the intermediate discharge hopper 11. A feeding guide assembly 7 and a diverting assembly 8 are installed at the inlet of the secondary crushing box 12. Two cooperating crushing rollers 4 are arranged below the outlet of the feeding guide assembly 7. It also includes a second rotary drive assembly for driving the two crushing rollers 4 to rotate in opposite directions. The second rotary drive assembly includes a secondary drive motor 10 mounted on a bracket 19. A secondary transmission pair 9 is installed between the secondary drive motor 10 and one crushing roller 4. It also includes transmission gears keyed to the ends of each crushing roller 4, with the two transmission gears meshing. The aforementioned secondary transmission pair 9 includes a driving pulley keyed to the output shaft of the secondary drive motor 10 and a driven pulley keyed to the shaft end of one crushing roller 4. A transmission belt is installed between the driving pulley and the driven pulley.

[0025] In addition, the aforementioned secondary crushing box 12 includes a main box body with a feed inlet at the top and a discharge outlet at the bottom. A window is provided on the front side of the main box body and a front cover plate is detachably connected to the window. A locking device is installed between the front cover plate and the main box body.

[0026] See further Figure 3 The aforementioned feeding guide assembly 7 includes a hopper 7-1 installed on the secondary crushing box 12 and located above the middle of the two crushing rollers 4. The discharge port of the hopper 7-1 is flat. It also includes an adjustable baffle mechanism for the discharge port provided above the diversion assembly 8, and an intermediate baffle plate 7-2 that is clearance-fitted with the diversion assembly 8 and provided between the hopper 7-1 and the baffle mechanism.

[0027] The material-blocking mechanism includes a front baffle 7-6 and a rear baffle 7-7 installed opposite each other at the feed inlet of the secondary crushing chamber 12. A horizontally arranged adjusting rod 7-5, rotatably connected to the secondary crushing chamber 12, is located at the lower part of the front baffle 7-6. An adjustable material gate 7-3 is fixedly connected to the adjusting rod 7-5. Several mounting sleeves are fixedly connected to the upper part of the adjustable material gate 7-3. The adjusting rod 7-5 is fixedly connected by the aforementioned mounting sleeves and locking screws. The outer end of the adjustable material gate 7-3 is bent and fits with the roller surface of the diversion assembly 8. The material blocking mechanism also includes an adjusting swing arm 7-4 fixedly connected to one end of the adjusting rod 7-5, a locking knob installed on the adjusting swing arm 7-4, and a positioning locking plate 7-8 fixedly connected to the outer wall of the secondary crushing box 12. The positioning locking plate 7-8 has several threaded holes distributed circumferentially. The adjusting swing arm 7-4 and the positioning locking plate 7-8 are locked together by a locking knob passing through the threaded holes.

[0028] like Figure 3 As shown, the aforementioned diversion assembly 8 includes a diversion roller 8-2 rotatably connected to the secondary crushing box 12 and arranged parallel to the crushing roller 4, and a diversion motor 8-1 installed on the secondary crushing box 12 for driving the diversion roller 8-2 to rotate. In actual operation, the adjusting rod 7-5 can be rotated according to the particle size of the material crushed by the hammer crushing assembly 16, thereby adjusting the gap between the outer end of the adjustable material gate 7-3 and the diversion roller 8-2 to form a channel for material to pass through. This allows the material to be evenly distributed along the axial direction of the diversion roller 8-2 and flow towards the intermediate baffle plate 7-2, then flow along the intermediate baffle plate 7-2 into the collection hopper 7-1, and then flow through the collection hopper 7-1 into the space between the two crushing rollers 4 for further crushing.

[0029] See further Figure 1 A discharge hopper 1 is installed at the discharge port of the secondary crushing box 12. A vent is provided on the side wall of the discharge hopper 1, and a dust collection component 6 is installed at the vent. The dust collection filter screen 2 is also installed at the vent. The pore size of the filter screen on the dust collection filter screen 2 is smaller than the particle size of the material after crushing.

[0030] like Figure 4 As shown, the aforementioned dust collection assembly 6 includes a dust collection fan 6-1 installed on one of the two crushing rollers 4. An air intake pipe 6-3 is installed at the air inlet of the dust collection fan 6-1, and the air intake pipe 6-3 is connected to a ventilation opening on the discharge hopper 1. An exhaust pipe 6-2 is installed at the air outlet of the dust collection fan 6-1, and the exhaust pipe 6-2 is connected to a dust removal device. In actual operation, the dust generated inside the crushing device in the discharge hopper 1 is collected by the dust collection fan 6-1 using a concentrated airflow, and the collected dust is then transported to the dust removal device for processing.

[0031] See further Figure 1 This embodiment also includes two guide blocks 5 installed at the discharge port of the secondary crushing box 12. The two guide blocks 5 are arranged opposite each other and their opposite surfaces are inclined surfaces used for guiding materials. It also includes an arc-shaped screen 3 arranged below the two guide blocks 5. A maintenance window corresponding to the arc-shaped screen 3 is opened on the discharge hopper 1. In actual operation, the arc-shaped screen 3 can be cleaned and maintained through the maintenance window.

[0032] Working principle:

[0033] In actual operation, the material to be crushed is poured into the primary crushing box 14. Under the action of the rotating hammer crushing assembly 16, the material can undergo preliminary crushing. Under the screening of the arc-shaped screen 13, larger pieces of material are retained for further crushing, while smaller pieces of material fall into the intermediate discharge hopper 11 after being filtered and screened by the arc-shaped screen 13. From there, the material flows into the baffle mechanism in the feeding guide assembly 7. Under the action of the baffle mechanism and the rotating diverting roller 8-2, the material is evenly distributed along the axial direction of the diverting roller 8-2. The material flows through the channel between the adjustable material gate 7-3 and the diverting roller 8-2 to the intermediate baffle plate 7-2, and then through the intermediate baffle plate 7-2 to the collecting hopper 7-1. Finally, it flows through the collecting hopper 7-1 into the space between the two crushing rollers 4 and is evenly distributed along the axial direction of the crushing rollers 4, thereby quickly performing secondary crushing on the material that has completed the primary crushing operation, achieving a fully efficient crushing operation. During the crushing operation, the dust collection component 6 collects the dust in the inner cavity of the crushing device in a concentrated manner, preventing a large amount of dust from floating in the air, polluting the air environment, and avoiding harm to the health of the workers.

Claims

1. A crushing device for the production of a powder accelerator, characterized in that: The system includes a support (19), a primary crushing box (14) with an inlet and an outlet mounted on the support (19), a hammer crushing assembly (16) and an arc-shaped screen (13) mounted inside the primary crushing box (14), a first rotary drive assembly for driving the hammer crushing assembly (16) to rotate, a funnel-shaped intermediate discharge hopper (11) mounted at the outlet of the primary crushing box (14), a secondary crushing box (12) with its inlet connected to the outlet of the intermediate discharge hopper (11), a feeding guide assembly (7) and a diversion assembly (8) mounted at the inlet of the secondary crushing box (12), and two matching feed guide assemblies (7 and 8) below the outlet of the feeding guide assembly (7). The device includes a crushing roller (4); it also includes a second rotary drive assembly for driving the two crushing rollers (4) to rotate in opposite directions; the feeding guide assembly (7) includes a collection hopper (7-1) installed on the secondary crushing box (12) and located above the middle of the two crushing rollers (4); it also includes an adjustable baffle mechanism for the discharge port provided above the diversion assembly (8); it also includes an intermediate baffle plate (7-2) provided between the collection hopper (7-1) and the baffle mechanism and in clearance fit with the diversion assembly (8); a discharge hopper (1) is installed at the discharge port of the secondary crushing box (12); a vent is provided on the side wall of the discharge hopper (1); a dust collection assembly (6) is installed at the vent; and a dust collection filter (2) is installed at the vent.

2. The crushing device for producing a powder accelerant according to claim 1, characterized by: The material blocking mechanism includes a front baffle (7-6) and a rear baffle (7-7) installed opposite to each other at the feed inlet of the secondary crushing box (12). A horizontally arranged adjusting rod (7-5) is provided at the lower part of the front baffle (7-6) and is rotatably connected to the secondary crushing box (12). An adjustable material gate (7-3) is fixedly connected to the adjusting rod (7-5). The outer end of the adjustable material gate (7-3) is bent and close to the roller surface of the diversion component (8). The system includes a clearance fit; it also includes an adjusting arm (7-4) fixedly connected to one end of the adjusting rod (7-5), a locking knob installed on the adjusting arm (7-4), and a positioning locking plate (7-8) fixedly connected to the outer wall of the secondary crushing box (12). The positioning locking plate (7-8) has several threaded holes distributed circumferentially, and the adjusting arm (7-4) and the positioning locking plate (7-8) are locked together by the locking knob passing through the threaded holes.

3. The crushing device for producing a powder accelerant according to claim 1, characterized by: The diversion assembly (8) includes a diversion roller (8-2) rotatably connected to the secondary crushing box (12) and arranged parallel to the crushing roller (4), and a diversion motor (8-1) mounted on the secondary crushing box (12) for driving the diversion roller (8-2) to rotate.

4. The crushing device for producing a powder accelerant according to claim 1, characterized by: The dust collection assembly (6) includes a dust collection fan (6-1) installed in one of the two crushing rollers (4). An air intake pipe (6-3) is installed at the air inlet of the dust collection fan (6-1), and the air intake pipe (6-3) is connected to a vent on the discharge hopper (1). An air outlet pipe (6-2) is installed at the air outlet of the dust collection fan (6-1), and the air outlet pipe (6-2) is connected to a dust removal device.

5. The crushing device for producing a powder accelerant according to claim 1, characterized by: The first rotary drive assembly includes a primary drive motor (18) mounted on a bracket (19), and a primary transmission pair (17) mounted between the hammer crushing assembly (16) and the primary drive motor (18); the second rotary drive assembly includes a secondary drive motor (10) mounted on a bracket (19), a secondary transmission pair (9) mounted between the secondary drive motor (10) and a crushing roller (4), and transmission gears keyed to the ends of each crushing roller (4), the two transmission gears meshing.

6. The crushing device for producing a powder accelerant according to claim 1, characterized by: The hammer crushing assembly (16) includes a hammer frame shaft (16-1) arranged laterally and rotatably connected to the primary crushing box (14). A hammer mounting frame (16-2) is installed on the hammer crushing assembly (16). Several hammer pins (16-4) are arranged parallel to the hammer frame shaft (16-1) and distributed circumferentially on the hammer mounting frame (16-2). Several hammer blades (16-3) are fixedly connected to each hammer pin (16-4).

7. The crushing device for producing a powder accelerant according to claim 1, characterized by: It also includes two guide blocks (5) installed at the discharge port of the secondary crushing box (12), the two guide blocks (5) are arranged opposite each other and the opposite face is an inclined surface for guiding the material, and an arc screen (3) is set below the two guide blocks (5), and an inspection window corresponding to the arc screen (3) is opened on the discharge hopper (1).

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