Building raw material screening device

Abstract

The utility model relates to the technical field of raw building material screening, and discloses a raw building material screening device which comprises a treatment box and further comprises a feeding hopper communicated with the top of the treatment box, guide rods are fixedly connected to the upper portion and the lower portion of the inner wall of the treatment box, and the surface of the upper guide rod is sleeved with an upper screening frame in a sliding mode. The surface of the lower guide rod is slidably sleeved with a lower screen frame. Dust generated in the screening process can be shielded, meanwhile, caked concrete in the upper screen frame can be treated while vibration of the upper screen frame and the lower screen frame is assisted, blockage in the feeding hopper can be reduced through the stirring mechanism, in addition, the state of the lower screen plate can be conveniently adjusted through the device, and the screening efficiency is improved. The problems that when part of existing devices are used, a large amount of dust directly flies to the outside, the working environment is likely to be affected, working personnel cannot conveniently treat caked concrete in a sieve plate, and a feeding port is likely to be blocked are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of building material raw material screening, in particular to a building material raw material screening device. Background Technique

[0002] Building materials are the general term for materials used in civil engineering and construction engineering, which can be divided into structural materials, decorative materials and some special materials. Among them, concrete, as an engineering composite material cemented by a cementitious material (such as cement) for aggregates (such as sand and stone), is widely used in civil engineering.

[0003] After retrieval, as disclosed in a Chinese patent document, a concrete raw material screening device [Application No.: CN202321761646.2]. This building material raw material screening device includes a frame, a feed inlet, a collection box and two sieve plates. A square ring is arranged below each sieve plate. Four sliders are fixedly connected to the four corners of the lower surface of each square ring. Four slide bars are fixedly connected between the left and right inner walls of the frame. Each slider is movably sleeved on the adjacent slide bar. A rotating motor is fixedly connected to the upper surface of the frame. The output shaft of the rotating motor is fixedly connected with a rotating shaft. Two cams are fixedly connected to the side surface of the rotating shaft. The left end of each cam is in movable contact with the right surface of the adjacent square ring.

[0004] When the device disclosed in this patent is in use, concrete can be screened inside the frame. However, during the screening process of concrete, a large amount of dust will directly float to the outside. It is difficult for the frame to block the dust, and the large amount of floating dust is likely to affect the surrounding staff and the working environment. In addition, when the device is in use, if the staff pours more concrete into the frame at one time, the concrete is likely to be blocked inside the feed inlet, resulting in the influence of material feeding. Moreover, it is inconvenient for the staff to process the caked concrete raw materials in the two sieve plates, resulting in material waste. Content of the Utility Model

[0005] The purpose of the utility model is to provide a building material raw material screening device to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a building material raw material screening device, including a processing box, and further including:

[0007] A feed hopper connected to the top of the processing box. Guide rods are fixedly connected to both the upper and lower sides of the inner wall of the processing box. An upper sieve frame is slidably sleeved on the surface of the upper guide rod, and a lower sieve frame is slidably sleeved on the surface of the lower guide rod. An upper sieve plate is embedded at the bottom of the upper sieve frame, and a lower sieve plate is hinged at the bottom of the lower sieve frame. A connecting frame is fixedly connected to the top of the lower sieve frame, and the top of the connecting frame is fixedly connected to the bottom of the upper sieve frame. A compression spring is sleeved on one side of the surface of the guide rod. A collection box is slidably connected to the bottom of the processing box. Slots and through slots are respectively opened at the lower parts of the two side surfaces of the processing box. The surface of the collection box is in contact with the inner wall of the slot, and the surface of the lower sieve plate is in contact with the inner wall of the through slot;

[0008] A bracket fixedly connected to the top of the processing box. A fixed box is fixedly connected to the top of the bracket. A motor is fixedly connected to the top of the fixed box. A knocking mechanism and a stirring mechanism are respectively installed on both sides inside the fixed box. Belt pulleys are arranged on the surfaces of the knocking mechanism and the stirring mechanism. The number of belt pulleys is two, and the two belt pulleys are connected by a belt;

[0009] A U-shaped plate fixedly connected to the surface of the processing box. An adjusting mechanism is installed inside the U-shaped plate. Two moving plates are slidably connected to the surface of the processing box. A fixed rod is fixedly connected to the surface of the moving plate. One end of the fixed rod is fixedly connected to a support plate. A reset mechanism is installed on the surface of the processing box.

[0010] Preferably, the knocking mechanism includes a bottom plate, a rotating shaft and a cam. The bottom plate is fixedly connected to the inner wall of the processing box. The bottom of the rotating shaft is rotatably connected to the top of the bottom plate. The top of the rotating shaft rotatably penetrates through the fixed box and is fixedly connected to the output shaft of the motor. The number of cams is two. The cams are fixedly sleeved on the surface of the rotating shaft. The surfaces of the two cams are respectively in contact with the surfaces of the upper sieve frame and the lower sieve frame. One side belt pulley is fixedly sleeved on the surface of the rotating shaft.

[0011] Preferably, the stirring mechanism includes a connecting rod, an anti-blocking rod and a scraping plate. The connecting rod rotatably penetrates through the bottom of the fixed box. The anti-blocking rod and the scraping plate are both fixedly connected to the surface of the connecting rod. The bottom of the scraping plate is in contact with the top of the upper sieve plate. The other side belt pulley is fixedly sleeved on the surface of the connecting rod. An extension plate is fixedly connected to the top of the feed hopper. Two fixed rings are fixedly sleeved on the surface of the connecting rod. The connecting rod rotatably penetrates through the extension plate. The surfaces of the fixed rings are in contact with the surface of the extension plate.

[0012] Preferably, the adjusting mechanism includes a short shaft, a gear disc and a rack plate. The short shaft is rotatably connected to the inner wall of the U-shaped plate. One end of the short shaft is rotatably connected to the surface of the processing box. The gear disc is fixedly sleeved on the surface of the short shaft. The number of the rack plates is two. The two rack plates are respectively arranged on both sides of the gear disc. The rack plate meshes with the gear disc. The two moving plates are respectively fixedly connected to the two rack plates.

[0013] Preferably, the reset mechanism includes a thin plate, a positioning block, a long rod and a tension spring. The thin plate and the positioning block are both fixedly connected to the surface of the processing box. The number of the thin plates is two. The positioning block is arranged between the two thin plates. The two ends of the long rod are respectively fixedly connected to the surfaces of the two thin plates. The long rod fixedly penetrates through the positioning block. The tension spring is sleeved on the surface of the long rod. The two ends of the tension spring are respectively fixedly connected to the surface of the moving plate and the surface of the positioning block.

[0014] Preferably, a clamping block is fixedly connected to the surface of the rack plate. Slots are respectively formed in the top and bottom of the U-shaped plate. The surface of the clamping block is in contact with the inner wall of the slot.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] When the present utility model is in use, the processing box can block the dust generated during the screening process to reduce the possibility of a large amount of dust directly floating in the air. At the same time, through the combined use of the knocking mechanism and the stirring mechanism, the present device can vibrate the upper sieve frame and the lower sieve frame while processing the agglomerated concrete inside the upper sieve frame, and the stirring mechanism can reduce the blockage in the feed hopper. In addition, the present device can also facilitate the adjustment of the state of the lower sieve plate, so that the staff can collect the agglomerated raw materials on the top of the lower sieve plate, solving the problems that in the use of some existing devices, a large amount of dust directly drifts to the outside, which is likely to affect the working environment, and it is inconvenient for the staff to process the agglomerated concrete in the sieve plate, and the feed inlet is also prone to blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the present utility model after the processing box is cut open;

[0019] Figure 3 is a three-dimensional structural schematic diagram of the present utility model after the processing box, the feed hopper and the fixed box are cut open;

[0020] Figure 4 is a three-dimensional structural schematic diagram of the motor, the knocking mechanism, the stirring mechanism and the belt pulley in the present utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model after the upper screen frame and the upper screen plate are cut open;

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the mold plate, adjustment mechanism, movable plate, support plate and reset mechanism in the utility model.

[0023] In the figure: 1, processing box; 2, feed hopper; 3, guide rod; 4, upper screen frame; 5, upper screen plate; 6, lower screen frame; 7, lower screen plate; 8, connecting frame; 9, compression spring; 10, collecting box; 11, fixing box; 12, motor; 13, knocking mechanism; 131, bottom plate; 132, rotating shaft; 133, cam; 14, stirring mechanism; 141, connecting rod; 142, anti-blocking rod; 143, scraper ; 15. Extension plate; 16. Fixed ring; 17. Belt pulley; 18. Bracket; 19. Profile plate; 20. Adjustment mechanism; 201. Short shaft; 202. Gear plate; 203. Rack plate; 21. Block; 22. Slot; 23. Moving plate; 24. Fixed rod; 25. Support plate; 26. Reset mechanism; 261. Thin plate; 262. Positioning block; 263. Long rod; 264. Tension spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6As shown in the figure, a building material raw material screening device includes a processing box 1. A feed hopper 2 is connected to the top of the processing box 1. Guide rods 3 are fixedly connected to both the upper and lower sides of the inner wall of the processing box 1. An upper sieve frame 4 is slidably sleeved on the surface of the upper guide rod 3, and a lower sieve frame 6 is slidably sleeved on the surface of the lower guide rod 3. An upper sieve plate 5 is embedded at the bottom of the upper sieve frame 4. A lower sieve plate 7 is hinged to the bottom of the lower sieve frame 6. A connecting frame 8 is fixedly connected to the top of the lower sieve frame 6, and the top of the connecting frame 8 is fixedly connected to the bottom of the upper sieve frame 4. Compression springs 9 are sleeved on one side of the surface of the guide rod 3. The number of compression springs 9 is several. The two ends of the upper compression springs 9 are respectively fixedly connected to the inner wall of the processing box 1 and the surface of the upper sieve frame 4. The two ends of the lower compression springs 9 are respectively fixedly connected to the inner wall of the processing box 1 and the surface of the lower sieve frame 6. A collection box 10 is slidably connected to the bottom of the processing box 1. Slots and through slots are respectively opened at the lower sides of the two side surfaces of the processing box 1. The surface of the collection box 10 is in contact with the inner wall of the slot, and the surface of the lower sieve plate 7 is in contact with the inner wall of the through slot. A bracket 18 is fixedly connected to the top of the processing box 1. A fixed box 11 is fixedly connected to the top of the bracket 18. A motor 12 is fixedly connected to the top of the fixed box 11. A knocking mechanism 13 and a stirring mechanism 14 are respectively installed on both sides inside the fixed box 11. The knocking mechanism 13 can cooperate with the compression springs 9 to vibrate the upper sieve frame 4 and the lower sieve frame 6. The stirring mechanism 14 can disperse the agglomerated raw materials. Pulley discs 17 are provided on the surfaces of the knocking mechanism 13 and the stirring mechanism 14. The number of pulley discs 17 is two. The two pulley discs 17 are connected by a belt. A U-shaped plate 19 is fixedly connected to the lower side of one side surface of the processing box 1. An adjusting mechanism 20 is installed inside the U-shaped plate 19. Two moving plates 23 are slidably connected to the surface of the processing box 1. A fixed rod 24 is fixedly connected to the surface of the moving plate 23. One end of the fixed rod 24 is fixedly connected to a support plate 25. A reset mechanism 26 is installed on the surface of the processing box 1.

[0026] The knocking mechanism 13 includes a bottom plate 131, a rotating shaft 132 and a cam 133. The bottom plate 131 is fixedly connected to the inner wall of the processing box 1. The bottom of the rotating shaft 132 is rotatably connected to the top of the bottom plate 131. The top of the rotating shaft 132 rotatably penetrates through the fixed box 11 and is fixedly connected to the output shaft of the motor 12. The number of cams 133 is two. The cams 133 are fixedly sleeved on the surface of the rotating shaft 132. The surfaces of the two cams 133 are respectively in contact with the surfaces of the upper sieve frame 4 and the lower sieve frame 6. Accordingly, it can cooperate with the compression springs 9 to drive the upper sieve frame 4 and the lower sieve frame 6 to move reciprocally, so as to screen the raw materials. One pulley disc 17 is fixedly sleeved on the surface of the rotating shaft 132.

[0027] The stirring mechanism 14 includes a connecting rod 141, a clogging prevention rod 142, and a scraping plate 143. The connecting rod 141 rotates through the bottom of the fixed box 11. The number of the clogging prevention rods 142 and the scraping plates 143 is several. The clogging prevention rods 142 and the scraping plates 143 are both fixedly connected to the surface of the connecting rod 141. The bottom of the scraping plate 143 is in contact with the top of the upper sieve plate 5. The rotation of the clogging prevention rod 142 with the connecting rod 141 can reduce the occurrence of blockage inside the feed hopper 2. The rotation of the scraping plate 143 with the connecting rod 141 can stir and scrape the caked raw materials on the top of the upper sieve plate 5. The cooperation of the scraping plate 143 and the upper sieve plate 5 can crush some of the caked raw materials. The cooperation of the clogging prevention rod 142 and the scraping plate 143 can also crush some of the caked raw materials. The other side pulley 17 is fixedly sleeved on the surface of the connecting rod 141. The top of the feed hopper 2 is fixedly connected with an extension plate 15. Two fixing rings 16 are fixedly sleeved on the surface of the connecting rod 141. The connecting rod 141 rotates through the extension plate 15. The surface of the fixing ring 16 is in contact with the surface of the extension plate 15. Through the cooperation of the extension plate 15 and the fixing ring 16, the position of the connecting rod 141 can be restricted.

[0028] The adjusting mechanism 20 includes a short shaft 201, a gear disk 202, and a rack plate 203. The short shaft 201 is rotatably connected to the inner wall of the U-shaped plate 19. One end of the short shaft 201 is rotatably connected to the surface of the processing box 1. The gear disk 202 is fixedly sleeved on the surface of the short shaft 201. The number of the rack plates 203 is two. The two rack plates 203 are respectively arranged on both sides of the gear disk 202. The rack plates 203 are meshed with the gear disk 202. The two moving plates 23 are respectively fixedly connected to the two rack plates 203. When the staff pulls one moving plate 23, the corresponding rack plate 203 will move accordingly, which can drive the gear disk 202 to rotate. At this time, the other rack plate 203 can move accordingly and drive the guide rod 3 on the other side to move in the opposite direction. Accordingly, the support of the support plate 25 for the lower sieve plate 7 can be quickly released.

[0029] A block 21 is fixedly connected to the surface of the rack plate 203. Slots 22 are opened at the top and bottom of the U-shaped plate 19. The surface of the block 21 is in contact with the inner wall of the slot 22. Through the cooperation of the block 21 and the slot 22, the stability of the rack plate 203 during movement can be improved.

[0030] The reset mechanism 26 includes a thin plate 261, a positioning block 262, a long rod 263, and a tension spring 264. Both the thin plate 261 and the positioning block 262 are fixedly connected to the surface of the processing box 1. The number of thin plates 261 is two, and the positioning block 262 is arranged between the two thin plates 261. Both ends of the long rod 263 are fixedly connected to the surfaces of the two thin plates 261. The long rod 263 fixedly penetrates through the positioning block 262, and the positioning block 262 can increase the stability of the long rod 263. The tension spring 264 is sleeved on the surface of the long rod 263, and both ends of the tension spring 264 are fixedly connected to the surfaces of the moving plate 23 and the positioning block 262 respectively. When the moving plate 23 moves, the tension spring 264 is stretched under force. Thereafter, under the action of the elastic force of the tension spring 264, the moving plate 23 can move in the reverse direction and support the bottom of the lower sieve plate 7.

[0031] Working principle: The staff pours building materials such as concrete into the interior of the processing box 1 through the feed hopper 2. At the same time, the staff can start the motor 12, and the rotating shaft 132 drives the cam 133 to rotate accordingly. Based on this, the cam 133 can drive the upper sieve frame 4 and the lower sieve frame 6 to move. At this time, with the coordinated use of the compression spring 9, the upper sieve frame 4 and the lower sieve frame 6 can reciprocate to screen the building materials. At the same time, with the cooperation of the belt pulley 17 and the belt, the connecting rod 141 drives the anti-blocking rod 142 and the scraper 143 to rotate to stir the raw materials. The stirring process can break some agglomerated raw materials. The raw materials screened by the upper sieve plate 5 fall into the interior of the lower sieve frame 6 through the connecting frame 8. Finally, the lower sieve plate 7 can screen the raw materials again. The raw materials after secondary screening can fall into the interior of the collection box 10. The staff can pull out the collection box 10 to collect the materials in the collection box 10. After the screening operation is completed, the staff pulls one side of the moving plate 23, and the support of the support plate 25 for the lower sieve plate 7 is released. The lower sieve plate 7 rotates under the action of gravity. Based on this, the staff can collect the remaining agglomerated raw materials on the top of the lower sieve plate 7 to reduce material consumption.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A building material raw material screening device, comprising a processing box (1), characterized in that: Also includes: A feed hopper (2) is connected to the top of the processing box (1), and the upper and lower parts of the inner wall of the processing box (1) are fixedly connected with guide rods (3). The surface of the upper guide rod (3) is slidably sleeved with an upper screen frame (4), and the surface of the lower guide rod (3) is slidably sleeved with a lower screen frame (6). The bottom of the upper screen frame (4) is embedded with an upper screen plate (5), and the bottom of the lower screen frame (6) is hinged with a lower screen plate (7). The top of the lower screen frame (6) is fixedly connected with a connecting frame (8), and the top of the connecting frame (8) is fixedly connected to the bottom of the upper screen frame (4). A compression spring (9) is sleeved on one side of the surface of the guide rod (3). The bottom of the processing box (1) is slidably connected with a collecting box (10), and the lower part of the two side surfaces of the processing box (1) is respectively provided with a slot and a through slot, the surface of the collecting box (10) is in contact with the inner wall of the slot, and the surface of the lower screen plate (7) is in contact with the inner wall of the through slot; A bracket (18) is fixedly connected to the top of the processing box (1), the top of the bracket (18) is fixedly connected to a fixed box (11), the top of the fixed box (11) is fixedly connected to a motor (12), a knocking mechanism (13) and a stirring mechanism (14) are respectively installed on both sides of the inside of the fixed box (11), and the surfaces of the knocking mechanism (13) and the stirring mechanism (14) are both provided with a belt pulley (17), the number of the belt pulleys (17) is two, and the two belt pulleys (17) are connected by a belt drive; A shaped plate (19) is fixedly connected to the surface of the processing box (1), an adjusting mechanism (20) is installed inside the shaped plate (19), two movable plates (23) are slidably connected to the surface of the processing box (1), a fixed rod (24) is fixedly connected to the surface of the movable plate (23), one end of the fixed rod (24) is fixedly connected to a support plate (25), and a reset mechanism (26) is installed on the surface of the processing box (1).

2. A building material screening device according to claim 1, characterized in that: The knocking mechanism (13) comprises a bottom plate (131), a rotating shaft (132) and a cam (133); the bottom plate (131) is fixedly connected to the inner wall of the processing box (1); the bottom of the rotating shaft (132) is rotatably connected to the top of the bottom plate (131); the top of the rotating shaft (132) rotatably penetrates the fixed box (11) and is fixedly connected to the output shaft of the motor (12); there are two cams (133); the cams (133) are fixedly sleeved on the surface of the rotating shaft (132); the surfaces of the two cams (133) are in contact with the surfaces of the upper screen frame (4) and the lower screen frame (6) respectively; and a belt pulley (17) on one side is fixedly sleeved on the surface of the rotating shaft (132).

3. The device for selecting building materials according to claim 1, characterized in that: The stirring mechanism (14) comprises a connecting rod (141), an anti-blocking rod (142) and a scraper (143); the connecting rod (141) rotates and passes through the bottom of the fixed box (11); the anti-blocking rod (142) and the scraper (143) are both fixedly connected to the surface of the connecting rod (141); the bottom of the scraper (143) contacts the top of the upper screen plate (5); the belt pulley (17) on the other side is fixedly sleeved on the surface of the connecting rod (141); the top of the feed hopper (2) is fixedly connected with an extension plate (15); two fixing rings (16) are fixedly sleeved on the surface of the connecting rod (141); the connecting rod (141) rotates and passes through the extension plate (15); the surface of the fixing ring (16) contacts the surface of the extension plate (15).

4. The device for selecting building materials according to claim 1, characterized in that: The adjustment mechanism (20) comprises a short shaft (201), a gear plate (202) and a rack plate (203); the short shaft (201) is rotatably connected to the inner wall of the shaped plate (19); one end of the short shaft (201) is rotatably connected to the surface of the processing box (1); the gear plate (202) is fixedly sleeved on the surface of the short shaft (201); there are two rack plates (203); the two rack plates (203) are respectively arranged on both sides of the gear plate (202); the rack plate (203) is meshed with the gear plate (202); and the two movable plates (23) are respectively fixedly connected to the two rack plates (203).

5. The device for selecting building materials according to claim 1, characterized in that: The reset mechanism (26) comprises a thin plate (261), a positioning block (262), a long rod (263) and a tension spring (264); the thin plate (261) and the positioning block (262) are both fixedly connected to the surface of the processing box (1); there are two thin plates (261); the positioning block (262) is arranged between the two thin plates (261); the two ends of the long rod (263) are respectively fixedly connected to the surfaces of the two thin plates (261); the long rod (263) is fixedly passed through the positioning block (262); the tension spring (264) is sleeved on the surface of the long rod (263); the two ends of the tension spring (264) are respectively fixedly connected to the surfaces of the moving plate (23) and the positioning block (262).

6. A device for screening building materials according to claim 4, characterized in that: A clamping block (21) is fixedly connected to the surface of the rack plate (203), and a clamping groove (22) is provided on the top and bottom of the shaped plate (19), and the surface of the clamping block (21) is in contact with the inner wall of the clamping groove (22).

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