Pneumatic auxiliary lime block screening equipment

Abstract

The utility model relates to the technical field of lime production, in particular to pneumatic auxiliary lime block screening equipment, which not only can adjust the size of screen holes at any time as required and improve the use flexibility of the equipment, but also can collect powder in the screening process and prevent the lime powder from being inhaled by workers. Comprising a protection mechanism; the device further comprises a smashing mechanism, a screening mechanism, an air exhaust mechanism and a filtering mechanism, the smashing mechanism is installed on the protection mechanism and conducts smashing on lime blocks, the screening mechanism is installed on the protection mechanism and conducts screening on the lime blocks, and the air exhaust mechanism is installed on the protection mechanism and conducts air exhaust through the filtering mechanism. And the filtering mechanism is mounted on the air exhaust mechanism and is used for filtering the lime powder.

Description

Technical Field

[0001] This utility model relates to the technical field of lime production, and in particular to a pneumatically assisted lime block screening device. Background Technology

[0002] Limestone's main component is calcium carbonate. Lime and limestone are raw materials widely used in building materials and industry. Quicklime absorbs moisture or becomes slaked lime when it is mixed with water. The main component of slaked lime is calcium hydroxide. Slaked lime is mixed into lime slurry, lime paste, etc., which are used as coating materials and brick and tile adhesives.

[0003] Existing limestone block screening equipment, such as the cement production raw material crushing and screening equipment disclosed in utility model patent application number 202020387647.5, mainly includes a box body with a feed hopper connected to the top. The inner cavity of the box body is arranged with a crushing mechanism and a screening mechanism from top to bottom. Guide mechanisms are provided on both sides of the inner cavity of the box body, and sealing mechanisms are provided on both sides of the box body. A guide plate is fixedly connected to the inner cavity of the box body, and the guide plate is located below the screening mechanism. In use, by starting motor one, the output shaft of motor one drives two crushing rollers to rotate, thereby crushing the limestone blocks. At the same time, motor two is started, and the output shaft of motor two drives the screening screen to move up and down, thereby screening the limestone particles.

[0004] However, existing screening equipment is difficult to adjust the size of the screen holes according to different needs, which requires the screen to be replaced many times, which is very troublesome. Moreover, the limestone powder flying during the screening process can easily cause burns to the respiratory tract of workers and affect their health. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pneumatically assisted lime block screening device that not only allows for the adjustment of the sieve size as needed, improving the flexibility of the device, but also collects the powder during the screening process, preventing lime powder from being inhaled by workers.

[0006] This utility model discloses a pneumatically assisted lime block screening device, including a protective mechanism; it also includes a crushing mechanism, a screening mechanism, an air extraction mechanism, and a filtration mechanism. The crushing mechanism is installed on the protective mechanism to crush the lime blocks, the screening mechanism is installed on the protective mechanism to screen the lime blocks, the air extraction mechanism is installed on the protective mechanism and extracts air through the filtration mechanism, and the filtration mechanism is installed on the air extraction mechanism to filter the lime powder. The operator puts the lime blocks into the protective mechanism, starts the crushing mechanism to crush the lime blocks, and the crushed lime blocks fall onto the screening mechanism to screen the lime blocks. The size of the sieve holes in the screening mechanism can be adjusted according to actual needs. At the same time, the air extraction mechanism is started, and the air extraction mechanism extracts the lime powder from the protective mechanism through the filtration mechanism, and the filtration mechanism filters the powder.

[0007] Preferably, the protective mechanism includes a protective box, a feeding hopper, a fan-shaped dust cover, a handwheel, a discharge pipe, and a valve. The bottom of the protective box is connected to the ground, and the inside of the protective box has a cavity. The bottom of the feeding hopper is connected to the top of the protective box. The fan-shaped dust cover is rotatably mounted on the protective box, and the handwheel is mounted on the fan-shaped dust cover. The top of the discharge pipe is connected to the bottom of the protective box, and the valve is mounted on the discharge pipe. The worker puts lime blocks into the feeding hopper, and then operates the handwheel to rotate the fan-shaped dust cover, so that the fan-shaped dust cover covers the feeding hopper to prevent lime powder from overflowing from above. After screening is completed, the discharge pipe is opened, and the lime blocks are discharged from the valve.

[0008] Preferably, the crushing mechanism includes a motor, a reducer, a first drive shaft, a first sprocket, two sets of crushing rollers, two sets of second sprockets, and a chain. The motor is mounted on a protective housing, the reducer is mounted on the protective housing, the first drive shaft is mounted on the reducer, the first sprocket is mounted on the first drive shaft, both sets of crushing rollers are rotatably mounted inside the feeding hopper, the two sets of second sprockets are respectively mounted on the two sets of crushing rollers, and the chain drive is installed between the first sprocket and the two sets of second sprockets. When the motor is started, the motor drives the first drive shaft and the first sprocket to rotate through the reducer. The first sprocket drives the two sets of second sprockets to rotate through the chain, and the two sets of second sprockets drive the two sets of crushing rollers to rotate. The rotation of the two sets of crushing rollers crushes the lime blocks in the feeding hopper.

[0009] Preferably, the screening mechanism includes a sieve plate, two sets of cylinders, two sets of connecting rods, a sliding grid, and multiple sets of protrusions. The sieve plate is installed in the cavity of the protective box, and a sliding groove is opened in the cavity of the protective box. The sliding groove is located below the sieve plate. Both sets of cylinders are installed on the protective box, and the two sets of connecting rods are respectively installed on the two sets of cylinders. The sliding grid is slidably installed in the sliding groove of the protective box and is connected to the two sets of connecting rods. Multiple sets of protrusions are installed on the sliding grid. When the two sets of cylinders are activated, the two sets of cylinders pull the two sets of connecting rods, which drive the sliding grid to slide. The sliding grid and the sieve plate cooperate to adjust the size of the sieve holes to facilitate the screening of lime blocks of different sizes. When the sieve plate is blocked, the cylinders are activated to pull the sliding grid back and forth. The multiple sets of protrusions slide repeatedly under the sieve plate, causing the sieve plate to vibrate and shake off the lime blocks blocking the sieve plate.

[0010] Preferably, the air extraction mechanism includes a second drive shaft, a pump body, an extraction pipe, and an exhaust pipe. The second drive shaft is mounted on a reducer, the pump body is mounted on a protective box, the extraction pipe is mounted on the pump body, and the exhaust pipe is mounted on the pump body. The reducer drives the second drive shaft to rotate, and the second drive shaft drives the pump body to extract air. The pump body extracts the filtered air from the filter mechanism through the extraction pipe, creating negative pressure inside the filter mechanism, and then the air is discharged through the exhaust pipe.

[0011] Preferably, the filtration mechanism includes a filter box, an air supply pipe, a protective cover, two sets of filter plates, two sets of pull rings, a hinge, a sealing cover, and a handle. The filter box is mounted on the protective box, and the filter box has an internal cavity that communicates with the inside of the extraction pipe. The air supply pipe is mounted on the protective box and communicates with both the cavity of the protective box and the internal cavity of the filter box. The protective cover is mounted inside the cavity of the protective box. Both sets of filter plates are slidably mounted inside the internal cavity of the filter box. Two sets of pull rings are mounted on the two sets of filter plates respectively. The hinge is mounted on the filter box, the sealing cover is mounted on the hinge, and the handle is mounted on the sealing cover. The extraction pipe extracts air from the filter box, and the negative pressure inside the internal cavity of the filter box draws air and powder from the cavity of the protective box into the air supply pipe. The protective cover prevents lime lumps from entering the air supply pipe, and the two sets of filter plates prevent powder from entering the extraction pipe. After prolonged use, the filter plates can be pulled out using the pull rings for cleaning, and the sealing cover can be opened by pulling the handle to remove the powder from the internal cavity of the filter box.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the worker puts the lime block into the protective mechanism, starts the crushing mechanism to crush the lime block, and the crushed lime block falls onto the screening mechanism. The screening mechanism screens the lime block. The size of the screen hole of the screening mechanism can be adjusted according to actual needs. At the same time, the air extraction mechanism is started. The air extraction mechanism extracts the lime powder in the protective mechanism through the filtration mechanism, and the filtration mechanism filters the powder. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the isometric structure of this utility model;

[0014] Figure 2 This is a front view structural diagram of the protective mechanism of this utility model;

[0015] Figure 3 This is a cross-sectional isometric structural diagram of the crushing mechanism, the air extraction mechanism, and the filtration mechanism of this utility model;

[0016] Figure 4 This is a partially enlarged isometric structural diagram of the crushing mechanism and the filtering mechanism of this utility model;

[0017] Figure 5 This is a partially enlarged cross-sectional isometric structural schematic diagram of the screening mechanism of this utility model.

[0018] The attached diagram is labeled as follows: 01, Protective mechanism; 11, Protective box; 12, Feeding hopper; 13, Fan-shaped dust cover; 14, Handwheel; 15, Discharge pipe; 16, Valve; 02, Crushing mechanism; 21, Electric motor; 22, Reducer; 23, First drive shaft; 24, First sprocket; 25, Crushing roller; 26, Second sprocket; 27, Chain; 03, Screening mechanism; 31, Screen plate; 32, Cylinder; 33, Connecting rod; 34, Sliding grid; 35, Protrusion; 04, Air extraction mechanism; 41, Second drive shaft; 42, Pump body; 43, Air extraction pipe; 44, Exhaust pipe; 05, Filtering mechanism; 51, Filter box; 52, Air supply pipe; 53, Protective cover; 54, Filter plate; 55, Pull ring; 56, Hinge; 57, Sealing cover; 58, Handle. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0020] Example 1

[0021] This utility model discloses a pneumatically assisted lime block screening device, comprising a protective mechanism 01; it also includes a crushing mechanism 02, a screening mechanism 03, an air extraction mechanism 04, and a filtration mechanism 05. The crushing mechanism 02 is installed on the protective mechanism 01 and crushes the lime blocks; the screening mechanism 03 is installed on the protective mechanism 01 and screens the lime blocks; the air extraction mechanism 04 is installed on the protective mechanism 01 and extracts air through the filtration mechanism 05; the filtration mechanism 05 is installed on the air extraction mechanism 04 and filters the lime powder. The protective mechanism 01 includes a protective layer... The system includes a protective box 11, a feeding hopper 12, a fan-shaped dust cover 13, a handwheel 14, a discharge pipe 15, and a valve 16. The bottom of the protective box 11 is connected to the ground, and the interior of the protective box 11 has a cavity. The bottom of the feeding hopper 12 is connected to the top of the protective box 11. The fan-shaped dust cover 13 is rotatably mounted on the protective box 11, and the handwheel 14 is mounted on the fan-shaped dust cover 13. The top of the discharge pipe 15 is connected to the bottom of the protective box 11, and the valve 16 is mounted on the discharge pipe 15. The crushing mechanism 02 includes a motor 21 and a reducer 22. The system consists of a first drive shaft 23, a first sprocket 24, two sets of crushing rollers 25, two sets of second sprockets 26, and a chain 27. A motor 21 is mounted on a protective housing 11, a reducer 22 is mounted on the protective housing 11, the first drive shaft 23 is mounted on the reducer 22, the first sprocket 24 is mounted on the first drive shaft 23, both sets of crushing rollers 25 are rotatably mounted inside the feeding hopper 12, the two sets of second sprockets 26 are respectively mounted on the two sets of crushing rollers 25, and the chain 27 is driven between the first sprocket 24 and the two sets of second sprockets 26; a screening machine. The structure 03 includes a sieve plate 31, two sets of cylinders 32, two sets of connecting rods 33, a sliding grid 34, and multiple sets of protrusions 35. The sieve plate 31 is installed in the cavity of the protective box 11. A sliding groove is opened in the cavity of the protective box 11, and the sliding groove is located below the sieve plate 31. Both sets of cylinders 32 are installed on the protective box 11. The two sets of connecting rods 33 are respectively installed on the two sets of cylinders 32. The sliding grid 34 is slidably installed in the sliding groove of the protective box 11, and the sliding grid 34 is connected to the two sets of connecting rods 33. Multiple sets of protrusions 35 are installed on the sliding grid 34.During operation, the worker first feeds lime blocks into the feeding hopper 12, then operates the handwheel 14 to rotate the fan-shaped dust cover 13, covering the feeding hopper 12 to prevent lime powder from overflowing from above. The motor 21 is then started, driving the first drive shaft 23 and the first sprocket 24 via the reducer 22. The first sprocket 24 drives two sets of second sprockets 26 via the chain 27, which in turn drive two sets of crushing rollers 25. The rotating crushing rollers 25 then crush the lime blocks in the feeding hopper 12. The crushing process begins with the activation of two sets of cylinders 32. These cylinders pull two sets of connecting rods 33, which in turn cause the sliding grid 34 to slide. The sliding grid 34 and the sieve plate 31 work together to adjust the size of the sieve holes, facilitating the screening of lime blocks of different sizes. When blockage occurs on the sieve plate 31, the cylinders 32 are activated to repeatedly pull the sliding grid 34. Multiple sets of protrusions 35 slide repeatedly below the sieve plate 31, causing the sieve plate 31 to vibrate and dislodge the lime blocks blocking it. After screening is complete, the discharge pipe 15 is opened, and the lime blocks are discharged from the valve 16.

[0022] Example 2

[0023] like Figures 1 to 5As shown, this utility model discloses a pneumatically assisted lime block screening device, based on Embodiment 1. The air extraction mechanism 04 includes a second drive shaft 41, a pump body 42, an air extraction pipe 43, and an exhaust pipe 44. The second drive shaft 41 is mounted on a reducer 22, the pump body 42 is mounted on a protective box 11, the air extraction pipe 43 is mounted on the pump body 42, and the exhaust pipe 44 is mounted on the pump body 42. The filtration mechanism 05 includes a filter box 51, an air supply pipe 52, a protective cover 53, two sets of filter plates 54, two sets of pull rings 55, a hinge 56, a sealing cover 57, and a handle 58. The filter box 51 is mounted on the protective box 11, and the filter box 51 has an internal cavity that communicates with the air extraction pipe 43. The air supply pipe 52 is mounted on the protective box 11 and is connected to the air extraction pipe 43. The protective cover 53 is not connected to the cavity of the protective box 11 and the inner cavity of the filter box 51. The protective cover 53 is installed in the cavity of the protective box 11. Both sets of filter plates 54 are slidably installed in the inner cavity of the filter box 51. Two sets of pull rings 55 are respectively installed on the two sets of filter plates 54. The hinge 56 is installed on the filter box 51. The sealing cover 57 is installed on the hinge 56. The handle 58 is installed on the sealing cover 57. When it is working, firstly, the worker puts the lime blocks into the feeding hopper 12. Then, the operator operates the handwheel 14 to drive the fan-shaped dust cover 13 to rotate, so that the fan-shaped dust cover 13 covers the feeding hopper 12 to prevent lime powder from overflowing from the top. The motor 21 is started. The motor 21 drives the first transmission shaft 23 and the first sprocket 24 to rotate through the reducer 22. The first sprocket 24 drives two sets of second sprockets 26 to rotate via chain 27. The two sets of second sprockets 26 drive two sets of crushing rollers 25 to rotate. The two sets of crushing rollers 25 crush the lime blocks in the hopper 12. The two sets of cylinders 32 are activated, which pull two sets of connecting rods 33. The two sets of connecting rods 33 drive the sliding grid 34 to slide. The sliding grid 34 and the screen plate 31 work together to adjust the size of the screen holes, which facilitates the screening of lime blocks of different sizes. When the screen plate 31 is blocked, the cylinder 32 is activated to pull the sliding grid 34 back and forth. Multiple sets of protrusions 35 slide repeatedly under the screen plate 31, causing the screen plate 31 to vibrate and shake off the lime blocks blocking the screen plate 31. After screening is completed, the discharge pipe 15 is opened, and the lime blocks are discharged. The ash block is discharged from valve 16. At the same time, the reducer 22 drives the second drive shaft 41 to rotate. The second drive shaft 41 drives the pump body 42 to draw air. The pump body 42 draws out the filtered air in the filter mechanism 05 through the air extraction pipe 43, making the filter box 51 negative pressure. Then the air is discharged through the exhaust pipe 44. The negative pressure in the inner cavity of the filter box 51 draws the air and powder in the cavity of the protective box 11 through the air supply pipe 52. The protective cover 53 is set to prevent the lime block from entering the air supply pipe 52. Two sets of filter plates 54 are set to prevent the powder from entering the air extraction pipe 43. After long-term use, the filter plate 54 can be pulled out by the pull ring 55 for cleaning. At the same time, the handle 58 is pulled to open the sealing cover 57 and take out the powder in the inner cavity of the filter box 51.

[0024] The electric motor 21, reducer 22, and pump body 42 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pneumatically assisted lime block screening device, comprising a protective mechanism (01); characterized in that, It also includes a crushing mechanism (02), a screening mechanism (03), an air extraction mechanism (04), and a filtration mechanism (05). The crushing mechanism (02) is installed on the protective mechanism (01) and crushes the lime blocks. The screening mechanism (03) is installed on the protective mechanism (01) and screens the lime blocks. The air extraction mechanism (04) is installed on the protective mechanism (01) and extracts air through the filtration mechanism (05). The filtration mechanism (05) is installed on the air extraction mechanism (04) and filters the lime powder. The protective mechanism (01) includes a protective box (11), a feeding hopper (12), a fan-shaped dust cover (13), a handwheel (14), a discharge pipe (15), and a valve (16). The bottom of the protective box (11) is connected to the ground. The protective box (11) has a cavity inside. The bottom of the feeding hopper (12) is connected to the top of the protective box (11). The fan-shaped dust cover (13) is rotatably installed on the protective box (11). The handwheel (14) is installed on the fan-shaped dust cover (13). The top of the discharge pipe (15) is connected to the bottom of the protective box (11). The valve (16) is installed on the discharge pipe (15). The screening mechanism (03) includes a sieve plate (31), two sets of cylinders (32), two sets of connecting rods (33), a sliding grid (34), and multiple sets of protrusions (35). The sieve plate (31) is installed in the cavity of the protective box (11). A sliding groove is opened in the cavity of the protective box (11). The sliding groove is located below the sieve plate (31). Both sets of cylinders (32) are installed on the protective box (11). The two sets of connecting rods (33) are respectively installed on the two sets of cylinders (32). The sliding grid (34) is slidably installed in the sliding groove of the protective box (11). The sliding grid (34) is connected to the two sets of connecting rods (33). Multiple sets of protrusions (35) are installed on the sliding grid (34).

2. The pneumatically assisted lime block screening device as described in claim 1, characterized in that, The crushing mechanism (02) includes a motor (21), a reducer (22), a first drive shaft (23), a first sprocket (24), two sets of crushing rollers (25), two sets of second sprockets (26), and a chain (27). The motor (21) is mounted on the protective box (11), the reducer (22) is mounted on the protective box (11), the first drive shaft (23) is mounted on the reducer (22), the first sprocket (24) is mounted on the first drive shaft (23), the two sets of crushing rollers (25) are rotatably mounted in the feeding hopper (12), the two sets of second sprockets (26) are respectively mounted on the two sets of crushing rollers (25), and the chain (27) is driven between the first sprocket (24) and the two sets of second sprockets (26).

3. The pneumatically assisted lime block screening device as described in claim 2, characterized in that, The air extraction mechanism (04) includes a second drive shaft (41), a pump body (42), an air extraction pipe (43), and an exhaust pipe (44). The second drive shaft (41) is mounted on the reducer (22), the pump body (42) is mounted on the protective box (11), the air extraction pipe (43) is mounted on the pump body (42), and the exhaust pipe (44) is mounted on the pump body (42).

4. The pneumatically assisted lime block screening device as described in claim 3, characterized in that, The filtration mechanism (05) includes a filter box (51), an air supply pipe (52), a protective cover (53), two sets of filter plates (54), two sets of pull rings (55), a hinge (56), a sealing cover (57), and a handle (58). The filter box (51) is installed on the protective box (11). The filter box (51) has an internal cavity that is connected to the inside of the air extraction pipe (43). The air supply pipe (52) is installed on the protective box (11) and is connected to the cavity of the protective box (11) and the internal cavity of the filter box (51) respectively. The protective cover (53) is installed in the cavity of the protective box (11). The two sets of filter plates (54) are slidably installed in the internal cavity of the filter box (51). The two sets of pull rings (55) are installed on the two sets of filter plates (54) respectively. The hinge (56) is installed on the filter box (51). The sealing cover (57) is installed on the hinge (56). The handle (58) is installed on the sealing cover (57).

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