Gravel material grading screening device for concrete preparation

Abstract

The utility model discloses a concrete preparation gravel material grading screening device which comprises a bottom supporting plate, a first supporting frame and a second supporting frame are fixedly installed at the top end of the bottom supporting plate, and the first supporting frame and the second supporting frame are connected with a first supporting block and a second supporting block respectively in a sliding mode. The device further comprises a screening barrel, one end of the screening barrel is rotationally connected with a first supporting block, the other end of the screening barrel is fixedly connected with an output shaft of a servo motor, and a supporting shaft is welded to the left end of the screening barrel. Therefore, large-particle material flow can be effectively prevented from blocking the screening holes of the screening barrel, continuous screening is guaranteed, and the screening efficiency is improved. And in the rotating process of the screening barrel, the screening barrel can shake up and down under the action of an eccentric block and a spring, so that the screening effect is further improved.

Description

Technical Field

[0001] This utility model relates to the field of grading and screening technology, specifically a grading and screening device for sand and gravel used in concrete preparation. Background Technology

[0002] Sand and gravel aggregates are a general term for materials such as sand, gravel, crushed stone, boulders, and quarries used in water conservancy projects. They are the main building materials for concrete and masonry structures in water conservancy projects. Aggregates are classified into coarse aggregates and fine aggregates according to their particle size. Coarse aggregates are rock particles with a diameter greater than 4.75 mm, while fine aggregates are rock particles with a diameter less than 4.75 mm. Different types of concrete require sand and gravel aggregates of different particle sizes.

[0003] Existing sand and gravel grading and screening devices mainly use vibration to drive the screen to vibrate, thereby achieving screening. However, with this screening method, larger sand and gravel particles are prone to clogging the screen holes, and under the action of gravity, the sand and gravel will only get tighter and tighter against the screen hole wall, resulting in poor screening effect. Utility Model Content

[0004] In view of the problems existing in the current concrete preparation sand and gravel grading and screening device, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a concrete preparation sand and gravel grading and screening device, which solves the problem that existing sand and gravel grading and screening devices mainly drive the screen to vibrate through vibration to achieve screening; however, in this screening method, larger sand and gravel particles easily clog the screen holes, and under the action of gravity, the sand and gravel will only get tighter and tighter with the screen hole wall, resulting in poor screening effect.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A concrete preparation aggregate grading and screening device includes a bottom support plate, and a first support frame and a second support frame are fixedly installed on the top of the bottom support plate. The first support frame and the second support frame are slidably connected to a first support block and a second support block, respectively.

[0008] It also includes a screening cylinder, one end of which is rotatably connected to a first support block, and the other end of which is fixedly connected to the output shaft of a servo motor.

[0009] As a preferred embodiment of the concrete preparation sand and gravel grading and screening device of this utility model, wherein: a support shaft is welded to the left end of the screening cylinder, and the support shaft passes through the first support block and is rotatably connected to the first support block through a bearing;

[0010] The servo motor is mounted on the second support block, and the output shaft of the servo motor passes through the second support block and is fixedly connected to the screening cylinder.

[0011] In a preferred embodiment of the concrete preparation sand and gravel grading and screening device of this utility model, a ring is welded to one end of the first support block, and the ring is rotatably connected to the second support block through a bearing.

[0012] As a preferred embodiment of the concrete preparation sand and gravel grading and screening device of this utility model, it further includes an eccentric block installed at the left end of the support shaft.

[0013] A support connector is welded onto the eccentric block, one end of the support shaft is inserted into the support connector, and the support connector and the support shaft are fixed together by bolts.

[0014] As a preferred embodiment of the concrete preparation sand and gravel grading and screening device of this utility model, wherein: a first spring is installed at the top and bottom of the first support block, and the other end of the first spring is fixedly connected to the first support frame;

[0015] The second support block is equipped with a second spring at both its top and bottom ends, and the other end of the second spring is fixedly connected to the second support frame.

[0016] As a preferred embodiment of the concrete preparation sand and gravel grading and screening device of this utility model, the first support frame is provided with a first sliding groove on its inner wall, and the first slider is welded to both ends of the first support block, and the first slider is slidably connected to the inner wall of the first sliding groove.

[0017] The inner wall of the second support frame is provided with a second sliding groove, and the two ends of the second support block are welded with second sliders, and the inner wall of the second sliding groove is slidably connected to the second sliders.

[0018] As a preferred embodiment of the concrete preparation sand and gravel grading and screening device of this utility model, the screening cylinder is provided with an opening, and a cover plate is hinged to the opening. The other end of the cover plate is connected to the screening cylinder by bolts.

[0019] Compared with existing technologies:

[0020] 1. By setting up a screening cylinder and driving it to rotate via a servo motor, large particles can be effectively prevented from clogging the screen holes, ensuring continuous screening and thus improving screening efficiency.

[0021] 2. During the rotation of the screening cylinder, the cylinder will sway up and down under the action of the eccentric block and the spring, thereby further improving the screening effect. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the present invention;

[0023] Figure 2 A side view of the eccentric block provided by this utility model;

[0024] Figure 3 A side view of the first support frame provided by this utility model;

[0025] Figure 4 A side view of the second support frame provided by this utility model.

[0026] In the figure: bottom support plate 1, first support frame 2, first slide groove 21, second support frame 3, second slide groove 31, servo motor 4, eccentric block 5, support connecting seat 51, support shaft 6, through hole 61, output shaft 7, screening cylinder 8, opening 9, cover plate 10, limit pin 11, fixing block 12, first support block 13, first slider 131, ring 14, first spring 15, second support block 16, second slider 161, second spring 17. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] This utility model provides a grading and screening device for sand and gravel in concrete preparation. Please refer to [link / reference]. Figure 1-4 The system includes a bottom support plate 1, with a first support frame 2 and a second support frame 3 fixedly installed at the top of the bottom support plate 1. The first support frame 2 and the second support frame 3 are slidably connected to a first support block 13 and a second support block 16, respectively. Specifically, a first sliding groove 21 is provided on the inner wall of the first support frame 2, and a first slider 131 is welded to both ends of the first support block 13. The first slider 131 is slidably connected to the inner wall of the first sliding groove 21.

[0029] The inner wall of the second support frame 3 is provided with a second sliding groove 31, and the two ends of the second support block 16 are welded with second sliders 161. The inner wall of the second sliding groove 31 is slidably connected to the second sliders 161.

[0030] It also includes a screening cylinder 8, which has an opening 9. A cover plate 10 is hinged to the opening 9. The other end of the cover plate 10 is bolted to the screening cylinder 8. One end of the screening cylinder 8 is rotatably connected to the first support block 13, and the other end of the screening cylinder 8 is fixedly connected to the output shaft 7 of the servo motor 4.

[0031] A support shaft 6 is welded to the left end of the screening cylinder 8. The support shaft 6 passes through the first support block 13 and is rotatably connected to the first support block 13 through a bearing.

[0032] The servo motor 4 is mounted on the second support block 16, and the output shaft 7 of the servo motor 4 passes through the second support block 16 and is fixedly connected to the screening cylinder 8. The output shaft 7 of the servo motor 4 does not contact the inner wall of the second support block 16.

[0033] A ring 14 is welded to one end of the first support block 13, and the ring 14 is rotatably connected to the second support block 16 through a bearing.

[0034] It also includes an eccentric block 5 installed on the left end of the support shaft 6; a support connecting seat 51 is welded on the eccentric block 5, one end of the support shaft 6 is inserted into the support connecting seat 51, and the support connecting seat 51 and the support shaft 6 are fixed together by bolts.

[0035] The first support block 13 is equipped with a first spring 15 at both the top and bottom ends, and the other end of the first spring 15 is fixedly connected to the first support frame 2.

[0036] The second support block 16 is equipped with a second spring 17 at both the top and bottom ends, and the other end of the second spring 17 is fixedly connected to the second support frame 3.

[0037] The first spring 15 and the second spring 17 provide elastic force for the up-and-down swaying of the first support block 13 and the second support block 16. Under the action of the eccentric block 5, when the support shaft 6 drives the eccentric block 5 to rotate, the screening cylinder 8 will sway up and down during the rotation, so as to better perform screening.

[0038] A fixing block 12 is welded onto the first support frame 2. A limit pin 11 is threaded onto the fixing block 12. A through hole 61 is provided on the support shaft 6. When the limit pin 11 is inserted into the through hole 61, it can restrict the rotation of the screening cylinder 8. At this time, the opening 9 on the screening cylinder 8 is located at the top or bottom. When the opening 9 is located at the top, the material to be screened can be poured into the screening cylinder 8. When the opening 9 is located at the bottom, large particles that have not been screened out in the screening cylinder 8 can be poured out.

[0039] In practical use, the opening 9 is facing upwards, and the material to be screened is injected into the screening cylinder 8. The servo motor 4 is started to drive the screening cylinder 8 to rotate. The material smaller than the screen holes on the screening cylinder 8 and the cover plate 10 is screened out of the screening cylinder 8.

[0040] Furthermore, during the rotation of the screening cylinder 8, the screening cylinder 8 will sway up and down due to the action of the eccentric block 5, thereby improving the screening efficiency.

[0041] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A concrete preparation aggregate grading and screening device, comprising a bottom support plate (1), characterized in that: The top of the bottom support plate (1) is fixedly installed with a first support frame (2) and a second support frame (3), and the first support frame (2) and the second support frame (3) are slidably connected with a first support block (13) and a second support block (16); It also includes a screening cylinder (8), one end of which is rotatably connected to a first support block (13), and the other end of which is fixedly connected to the output shaft (7) of a servo motor (4).

2. The concrete preparation aggregate grading and screening device according to claim 1, characterized in that, The left end of the screening cylinder (8) is welded with a support shaft (6), which passes through the first support block (13) and is rotatably connected to the first support block (13) through a bearing; The servo motor (4) is mounted on the second support block (16), and the output shaft (7) of the servo motor (4) passes through the second support block (16) and is fixedly connected to the screening cylinder (8).

3. The concrete preparation aggregate grading and screening device according to claim 2, characterized in that, A ring (14) is welded to one end of the first support block (13), and the ring (14) is rotatably connected to the second support block (16) through a bearing.

4. The concrete preparation aggregate grading and screening device according to claim 1, characterized in that, It also includes an eccentric block (5) installed at the left end of the support shaft (6); A support connecting seat (51) is welded onto the eccentric block (5), one end of the support shaft (6) is inserted into the support connecting seat (51), and the support connecting seat (51) and the support shaft (6) are fixed together by bolts.

5. A concrete preparation aggregate grading and screening device according to claim 3 or 4, characterized in that, The first support block (13) is equipped with a first spring (15) at both the top and bottom ends, and the other end of the first spring (15) is fixedly connected to the first support frame (2); The second support block (16) is equipped with a second spring (17) at both the top and bottom ends, and the other end of the second spring (17) is fixedly connected to the second support frame (3).

6. The concrete preparation aggregate grading and screening device according to claim 1, characterized in that, The inner wall of the first support frame (2) is provided with a first sliding groove (21), and the two ends of the first support block (13) are welded with first sliders (131). The inner wall of the first sliding groove (21) is slidably connected to the first sliders (131). The second support frame (3) has a second sliding groove (31) on its inner wall, and the second support block (16) has a second slider (161) welded to both ends. The second slider (161) is slidably connected to the inner wall of the second sliding groove (31).

7. The concrete preparation aggregate grading and screening device according to claim 2, characterized in that, The screening cylinder (8) is provided with an opening (9), and a cover plate (10) is hinged to the opening (9). The other end of the cover plate (10) is connected to the screening cylinder (8) by bolts.

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