Concrete preparation environment-friendly gravel grading and screening device

Abstract

The application provides an environmentally-friendly sandstone grading and screening device for concrete preparation, and relates to the technical field of sandstone screening. The device comprises a fixed hopper seat, the left side of which is integrally provided with a fixed stand; the top of the fixed hopper seat is rotatably provided with a rotating stand, which can rotate to the left; two groups of electric supporting cylinders are hingedly arranged on the two sides of the rotating stand and the fixed stand; the right end of the fixed hopper seat is fixedly connected with an upwardly-inclined discharge channel; and the front side of the fixed hopper seat is fixedly provided with a feeding bin. The device is provided with grading screen frames, provides a quick grading and discharging mechanism, and continuously stirs and screens through the sliding of eccentric rollers in transmission grooves to drive the whole reciprocating movement of the rotating positioning seat and the grading screen frames, so that small-size sandstones fall down in sequence and finally fall into the fixed hopper seat, and sandstones that cannot be directly used are graded and left in different grading screen frames, thereby solving the problem of the lack of quick grading and discharging function of the existing device.

Description

Technical Field

[0001] This invention relates to the field of sand and gravel screening technology, and in particular to an environmentally friendly sand and gravel grading and screening device for concrete preparation. Background Technology

[0002] Concrete refers to artificial stone made by mixing cement, water, sand, gravel, chemical admixtures and mineral admixtures in appropriate proportions, followed by uniform mixing, compaction and curing. During the manufacturing process, the sand in the concrete needs to be classified. If the sand and gravel are too large, it will affect the solidification effect, so grading and screening are required.

[0003] The screening devices currently in use have the following drawbacks:

[0004] 1. The current concrete equipment has a fixed screening structure, which makes it inconvenient to directly and quickly put the screened sand and gravel into different storage locations, and lacks a quick grading and discharge mechanism.

[0005] 2. Lack of a transmission mechanism for synchronous screening at each stage;

[0006] 3. Lack of a graded load-bearing structure that can automatically maintain balance. Summary of the Invention

[0007] In view of this, the present invention provides an environmentally friendly sand and gravel grading and screening device for concrete preparation, which has a grading screen frame and provides an automatic balancing function. The rear end of the grading screen frame is fixedly equipped with a control handle, which is vertically downward, thereby achieving the effect of automatically maintaining balance.

[0008] This invention provides an environmentally friendly sand and gravel grading and screening device for concrete preparation, specifically comprising: a fixed hopper, with a fixed frame integrally arranged on the left side of the fixed hopper; a rotating frame rotatably arranged on the top of the fixed hopper, the rotating frame being rotatable to the left, and two sets of electric support cylinders hinged to both sides of the rotating frame and the fixed frame; an upwardly inclined discharge channel fixedly connected to the right end of the fixed hopper; a feeding bin fixedly arranged on the front side of the fixed hopper; control holes on both sides of the rotating frame, with fixed guide wheels rotatably arranged on the inner edge of the control holes, the fixed guide wheels being T-shaped, and a fixed guide device rotatably arranged between the two fixed guide wheels, with a grading screen frame slidably arranged in the fixed guide device.

[0009] Optionally, the rear side of the fixed shelf is an open structure, and a positioning partition is fixedly installed at the bottom of the fixed shelf. A carrier vehicle with universal wheels installed at the bottom is arranged in the interval of the positioning partition.

[0010] Optionally, a top plate is fixedly installed on the top of the rotating frame, and a feeding hole is opened in the middle of the top plate; two sets of guide columns are fixedly installed on the front side of the rotating frame, and a motor base is fixedly installed at the bottom of the guide columns.

[0011] Optionally, the top of the fixed bucket is a bucket groove structure; a discharge motor is fixedly installed at the outer end of the discharge channel, and a screw propeller A driven by the discharge motor is rotatably installed inside the discharge channel, with one end of the screw propeller A located inside the fixed bucket; a discharge pipe is integrally installed at the bottom of the outer end of the discharge channel.

[0012] Optionally, the top of the feeding bin is fixedly provided with an extraction channel in conjunction with a bracket, and an extraction motor is fixedly provided at the top of the extraction channel; a screw propeller B driven by the extraction motor is rotatably provided inside the extraction channel, and the bottom of the screw propeller B is located inside the feeding bin; a downwardly inclined discharge pipe is integrally provided on the upper rear side of the extraction channel, and the bottom of the discharge pipe is vertically aligned with the feed hole.

[0013] Optionally, the guide device consists of two sets of rotating frames and two sets of connecting guide seats, with two sets of connecting guide seats fixed in the middle of the two sets of rotating frames; the rotating frames are kept in a selectable state by being fitted with the surrounding fixed guide wheels, and the top two sides of the grading screen frame have flange structures that slide above the connecting guide seats on both sides in cooperation with the guide rails; the bottom of the grading screen frame is set as an open structure and a filter screen is installed, with the mesh size of the filter screen of the grading screen frame decreasing sequentially from top to bottom.

[0014] Optionally, a control handle is fixedly provided at the rear end of each grading screen frame, with the control handle pointing downwards vertically; a connecting shaft is fixedly provided at the front end of the grading screen frame, and a rotating positioning seat is provided at the front end of the connecting shaft in conjunction with a bearing and rotatingly, with a transmission groove vertically opened at the front end of the rotating positioning seat; the rotating positioning seat slides between the guide columns on both sides.

[0015] Optionally, a drive shaft is rotatably mounted on the top of the motor base, and an eccentric roller is fixedly mounted on the outside of the drive shaft, with the eccentric roller slidably mounted in the drive groove; a screening motor for driving the drive shaft is fixedly mounted on the bottom of the motor base.

[0016] The beneficial effects are as follows:

[0017] 1. This invention is equipped with a grading screen frame, providing a quick grading and discharge mechanism. The eccentric roller slides in the transmission groove, driving the rotating positioning seat and the grading screen frame to move back and forth, thereby continuously stirring and screening. Small-volume sand and gravel fall downwards in sequence and finally fall into the fixed hopper. Sand and gravel that cannot be used directly are graded and left in different grading screen frames to complete the grading. The grading process does not affect the discharge of qualified sand and gravel. Finally, the sand and gravel can be poured into the carrier vehicle to complete the discharge.

[0018] 2. A drive shaft is provided, which provides a synchronous drive function. The grading screen frame is slidably connected to the connecting guide seat, while the rotating frame rotates in the fixed guide wheel. Therefore, the grading screen frame and the drive and rotation are separate and do not affect each other. When the grading screen frame is rotated, the connecting shaft rotates automatically in the rotating positioning seat. Therefore, it is not necessary to disconnect the drive shaft to perform the subsequent grading and discharge function.

[0019] 3. The grading screen frame also has an automatic balancing function. The rear end of the grading screen frame is fixedly equipped with a control handle. The control handle is vertically downward, thus achieving the effect of automatically maintaining balance. When discharging material, the material can be discharged by manually rotating the control handle. During the rotation of the rotating frame, the grading screen frame can be prevented from tilting prematurely to discharge sand and gravel. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown;

[0021] Figure 2 A partial cross-sectional view of an embodiment of the present invention is shown;

[0022] Figure 3 A schematic diagram of the isometric structure of an embodiment of the present invention is shown;

[0023] Figure 4 A schematic diagram of the discharge state structure in an embodiment of the present invention is shown;

[0024] Figure 5 This diagram shows the assembly structure of the grading sieve frame in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the disassembled structure of the grading sieve frame in an embodiment of the present invention is shown;

[0026] Figure 7 A three-dimensional structural schematic diagram of the rotating stand in an embodiment of the present invention is shown;

[0027] Figure 8 A partially enlarged structural schematic diagram of embodiment A of the present invention is shown.

[0028] List of reference numerals

[0029] 1. Fixed bucket base; 101. Fixed frame; 102. Positioning partition; 103. Carrier vehicle; 2. Rotating frame; 201. Control hole; 202. Top plate; 203. Feed hole; 204. Fixed guide wheel; 205. Guide column; 206. Motor base; 3. Electric support cylinder; 4. Discharge channel; 401. Discharge motor; 402. Screw propeller A; 403. Discharge pipe; 5. Feeding bin; 501. Extraction channel; 502. Extraction motor; 503. Screw propeller B; 504. Discharge pipe; 6. Fixed guide device; 601. Rotating frame; 602. Connecting guide seat; 7. Grading screen frame; 701. Control handle; 702. Connecting shaft; 703. Rotating positioning seat; 704. Transmission groove; 8. Transmission shaft; 801. Eccentric roller; 9. Screening motor. Detailed Implementation

[0030] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0031] Example 1:

[0032] Please refer to the attached diagram in the instruction manual. Figures 1 to 8 As shown:

[0033] This invention proposes an environmentally friendly sand and gravel grading and screening device for concrete preparation, comprising: a fixed hopper 1, with a fixed support frame 101 integrally installed on the left side of the fixed hopper 1; a rotating upright 2 rotatably installed on the top of the fixed hopper 1, the rotating upright 2 being able to rotate to the left, and two sets of electric support cylinders 3 hinged to the two sides of the rotating upright 2 and the fixed support frame 101; an upwardly inclined discharge channel 4 fixedly connected to the right end of the fixed hopper 1; a feeding bin 5 fixedly installed on the front side of the fixed hopper 1; control holes 201 opened on both sides of the rotating upright 2, with fixed guide wheels 204 rotatably installed on the inner edge of the control holes 201, the fixed guide wheels 204 being T-shaped, and a fixed guide device 6 rotatably installed between the two fixed guide wheels 204, with a grading screen frame 7 slidably installed in the fixed guide device 6.

[0034] The fixed shelf 101 has an open structure at the rear. A positioning partition 102 is fixedly installed at the bottom of the fixed shelf 101. A carrier 103 with casters installed at the bottom is arranged in the interval of the positioning partition 102.

[0035] The rotating frame 2 has a top plate 202 fixedly installed on its top, and a feed hole 203 is opened in the middle of the top plate 202; two sets of guide columns 205 are fixedly installed on the front side of the rotating frame 2, and a motor base 206 is fixedly installed at the bottom of the guide columns 205.

[0036] The top of the fixed bucket seat 1 is a bucket trough structure; a discharge motor 401 is fixedly installed at the outer end of the discharge channel 4, and a screw propeller A402 driven by the discharge motor 401 is rotatably installed inside the discharge channel 4, with one end of the screw propeller A402 located inside the fixed bucket seat 1; a discharge pipe 403 is integrally installed at the bottom of the outer end of the discharge channel 4.

[0037] The top of the feeding bin 5 is fixedly equipped with a support bracket and an extraction channel 501. An extraction motor 502 is fixedly installed on the top of the extraction channel 501. A screw propeller B503 driven by the extraction motor 502 is rotatably installed inside the extraction channel 501. The bottom of the screw propeller B503 is located inside the feeding bin 5. A downwardly inclined discharge pipe 504 is integrally installed on the upper rear side of the extraction channel 501. The bottom of the discharge pipe 504 is vertically aligned with the feed hole 203.

[0038] The guide device 6 consists of two sets of rotating frames 601 and two sets of connecting guide seats 602. The two sets of connecting guide seats 602 are fixed in the middle of the two sets of rotating frames 601. The rotating frames 601 are in a selectable state by being in contact with the surrounding fixed guide wheels 204. The top two sides of the grading screen frame 7 have flange structures that slide above the connecting guide seats 602 on both sides in cooperation with the guide rails. The bottom of the grading screen frame 7 is set as an open structure and a filter screen is installed. The mesh size of the filter screen of the grading screen frame 7 decreases from top to bottom.

[0039] Among them, the rear end of the grading screen frame 7 is fixedly provided with a control handle 701, which is vertically downward; the front end of the grading screen frame 7 is fixedly provided with a connecting shaft 702, and the front end of the connecting shaft 702 is fitted with a bearing and a rotating positioning seat 703 is rotatably provided. The front end of the rotating positioning seat 703 is vertically provided with a transmission groove 704; the rotating positioning seat 703 slides between the two guide columns 205.

[0040] The motor base 206 has a drive shaft 8 rotatably mounted on its top, an eccentric roller 801 fixedly mounted on the outside of the drive shaft 8, and the eccentric roller 801 slidably mounted in the transmission groove 704; and a screening motor 9 for driving the drive shaft 8 is fixedly mounted on the bottom of the motor base 206.

[0041] like Figure 1-3 As shown, when in use, the ungraded sand and gravel are directly poured into the feeding bin 5. The extraction motor 502 is started to drive the screw propeller B503 to rotate and convey the sand and gravel upward. Then the sand and gravel are discharged through the discharge pipe 504 and fall into the grading screen frame 7 through the control hole 201.

[0042] At the same time, the screening motor 9 is started to drive the transmission shaft 8 to rotate. The transmission shaft 8 drives the eccentric roller 801 to rotate. The eccentric roller 801 slides in the transmission groove 704, driving the rotating positioning seat 703 and the grading screen frame 7 to move back and forth as a whole, thereby continuously stirring and screening. Small volumes of sand and gravel fall down in sequence and finally fall into the fixed hopper 1. Sand and gravel that cannot be used directly are graded and left in different grading screen frames 7.

[0043] Due to their density, small-volume sand and gravel will naturally settle and thus be able to pass through the filter screen at the bottom of the grading sieve frame 7 and fall downwards.

[0044] Example 2:

[0045] Based on Example 1, such as Figure 2 As shown, screening does not affect the direct discharge of qualified sand and gravel. Fine sand and gravel have little effect on the solidification of concrete, so they can be discharged directly.

[0046] When the discharge motor 401 is started, the screw propeller A402 is rotated, which can continuously extract usable sand and gravel and discharge it from the discharge pipe 403.

[0047] Example 3:

[0048] Based on Example 1, such as Figure 4 As shown, the rotating stand 2 can be laid flat as needed;

[0049] The retractable electric support cylinder 3 can flatten the rotating frame 2 to the left. During this process, the grading screen frame 7 automatically maintains its balance, and the control handle 701 provides a counterweight. After the rotating frame 2 is flattened, the grading screen frame 7 can be rotated by the control handle 701 to discharge the sand and gravel. The sand and gravel fall into the pre-placed carrier 103 to complete the classification and stacking. Finally, the grading is completed by transferring the sand and gravel through the carrier 103.

[0050] The specific usage and function of this embodiment: In this invention, when in use, ungraded sand and gravel are directly poured into the feeding bin 5, the extraction motor 502 is started to drive the screw propeller B503 to rotate and convey the sand and gravel upward, and then the sand and gravel are discharged through the discharge pipe 504 and fall into the grading screen frame 7 through the control hole 201.

[0051] At the same time, the screening motor 9 is started to drive the transmission shaft 8 to rotate. The transmission shaft 8 drives the eccentric roller 801 to rotate. The eccentric roller 801 slides in the transmission groove 704, driving the rotating positioning seat 703 and the grading screen frame 7 to move back and forth as a whole, thereby continuously stirring and screening. Small volumes of sand and gravel fall down in sequence and finally fall into the fixed hopper 1. Sand and gravel that cannot be used directly are graded and left in different grading screen frames 7.

[0052] When the discharge motor 401 is started, the screw propeller A402 is rotated, which can continuously extract usable sand and gravel and discharge it from the discharge pipe 403.

[0053] After grading is completed, the retractable electric support cylinder 3 can flatten the rotating frame 2 to the left. During this process, the grading screen frame 7 automatically maintains balance, and the control handle 701 provides a counterweight. After the rotating frame 2 is flattened, the grading screen frame 7 can be rotated by the control handle 701 to discharge the sand and gravel. The sand and gravel fall into the pre-placed carrier 103 to complete the classification and stacking. Finally, the sand and gravel can be transferred by the carrier 103 to complete the grading.

[0054] The rotating frame 2 can be reset by opening the electric support cylinder 3, and screening can be carried out again after the rotating frame 2 is reset.

Claims

1. An environmentally friendly sand and gravel grading and screening device for concrete preparation, characterized in that, include: A fixed bucket (1) is provided with a fixed support frame (101) integrally on the left side; a rotating stand (2) is rotatably provided on the top of the fixed bucket (1), the rotating stand (2) can rotate to the left, and two sets of electric support cylinders (3) are hinged to the two sides of the rotating stand (2) and the fixed support frame (101); an upwardly inclined discharge channel (4) is fixedly connected to the right end of the fixed bucket (1); a feeding bin (5) is fixedly provided on the front side of the fixed bucket (1); control holes (201) are provided on both sides of the rotating stand (2), and fixed guide wheels (204) are rotatably provided on the inner edge of the control holes (201). The fixed guide wheels (204) are T-shaped, and a fixed guide device (6) is rotatably provided between the two fixed guide wheels (204). A grading screen frame (7) is slidably provided in the fixed guide device (6); the fixed guide device (6) consists of two sets of rotating frames (601) and two sets of connecting guide seats (602). Two sets of connecting guide seats (602) are fixedly installed in the middle of the rotating frame (601); fixed guide wheels (204) are fitted around the outside of the rotating frame (601); the top two sides of the grading screen frame (7) are flange structures that slide above the connecting guide seats (602) on both sides in cooperation with the guide rail; the bottom of the grading screen frame (7) is set as an open structure and a filter screen is installed, and the mesh size of the filter screen of the grading screen frame (7) decreases from top to bottom; a control handle (701) is fixedly installed at the rear end of the grading screen frame (7), and the control handle (701) is vertically downward; a connecting shaft (702) is fixedly installed at the front end of the grading screen frame (7), and a rotating positioning seat (703) is set at the front end of the connecting shaft (702) in cooperation with the bearing and rotating; a transmission groove (704) is vertically opened at the front end of the rotating positioning seat (703); two sets of guide columns (205) are fixedly installed on the front side of the rotating stand (2), and the rotating positioning seat (703) slides between the guide columns (205) on both sides.

2. The environmentally friendly sand and gravel grading and screening device for concrete preparation as described in claim 1, characterized in that, The rear side of the fixed shelf (101) is an open structure. A positioning partition (102) is fixedly installed at the bottom of the fixed shelf (101). A carrier vehicle (103) with universal wheels installed at the bottom is arranged in the interval of the positioning partition (102).

3. The environmentally friendly sand and gravel grading and screening device for concrete preparation as described in claim 1, characterized in that, The top of the rotating stand (2) is fixedly provided with a top plate (202), and a feed hole (203) is opened in the middle of the top plate (202); a motor base (206) is fixedly provided at the bottom of the guide column (205).

4. The environmentally friendly sand and gravel grading and screening device for concrete preparation as described in claim 1, characterized in that, The top of the fixed bucket (1) is a bucket trough structure; a discharge motor (401) is fixedly installed at the outer end of the discharge channel (4), and a spiral propeller A (402) driven by the discharge motor (401) is rotatably installed inside the discharge channel (4), with one end of the spiral propeller A (402) located inside the fixed bucket (1); a discharge pipe (403) is integrally installed at the bottom of the outer end of the discharge channel (4).

5. The environmentally friendly sand and gravel grading and screening device for concrete preparation as described in claim 3, characterized in that, The top of the feeding bin (5) is fixedly provided with a retrieval channel (501) in conjunction with the bracket, and the top of the retrieval channel (501) is fixedly provided with a retrieval motor (502); a screw propeller B (503) driven by the retrieval motor (502) is rotatably provided in the retrieval channel (501), and the bottom of the screw propeller B (503) is located in the feeding bin (5); a downwardly inclined discharge pipe (504) is integrally provided on the upper rear side of the retrieval channel (501), and the bottom of the discharge pipe (504) is vertically aligned with the feed hole (203).

6. The environmentally friendly sand and gravel grading and screening device for concrete preparation as described in claim 3, characterized in that, The motor base (206) is rotatably provided with a transmission shaft (8) at the top, and an eccentric roller (801) is fixedly provided on the outside of the transmission shaft (8). The eccentric roller (801) is slidably provided in the transmission groove (704). A screening motor (9) for driving the transmission shaft (8) is fixedly provided at the bottom of the motor base (206).

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