Sand screening machine for concrete production

Abstract

The utility model relates to the technical field of sand screening machines, in particular to a sand screening machine for concrete production, which comprises a machine body and a supporting frame, a feeding groove, a motor and a screening drum are fixedly connected to the upper surface of the supporting frame, a first discharging groove and a second discharging groove are fixedly connected to the lower surface of the supporting frame, a rotating rod is mounted on the surface of the motor, and the rotating rod is connected with the screening drum. The surface of the rotating rod is fixedly connected with a connecting rod, and a stirring rod is installed on the surface of the connecting rod. The connecting rod and the stirring rod are split, the connecting rod and the stirring rod are connected through the threaded block, the connecting plate and the clamping plate, meanwhile, the connecting position is limited under the action of the threaded pipe, the split stirring rod is installed on the connecting rod, the connecting mode of an original bolt assembly is changed, and meanwhile the stirring effect is improved. And the damaged stirring rod can be replaced more quickly, so that the maintenance is more efficient, and the screening process is not delayed.

Description

Technical Field

[0001] The utility model relates to the technical field of sand screening machines, in particular to a sand screening machine for concrete production. Background Technique

[0002] Concrete refers to the general term of engineering composite materials that cementitious materials bond aggregates into a whole. Usually, the term "concrete" refers to cement concrete, which uses cement as the cementitious material, sand and stone as aggregates, and is mixed with water in a certain proportion and stirred.

[0003] During the process of adding sand to mix concrete, the transported sand needs to be screened by a sand screening machine. However, in the process of using the existing sand screening machine, the stirring rod and the connecting rod inside it are connected to the rotating rod by bolts. After long-term and multiple screenings of sand, the stirring rod is easily damaged and difficult to replace, affecting the maintenance efficiency and the sand screening process. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sand screening machine for concrete production, so as to solve the problem that in the process of using the sand screening machine mentioned in the above background technique, the stirring rod and the connecting rod inside it are connected to the rotating rod by bolts. After long-term and multiple screenings of sand, the stirring rod is easily damaged and difficult to replace, affecting the maintenance efficiency and the sand screening process.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sand screening machine for concrete production, comprising:

[0006] A machine body, including a support frame, on the upper surface of the support frame, a feeding trough, a motor and a screening cylinder are fixedly connected. On the lower surface of the support frame, a first discharge trough and a second discharge trough are fixedly connected. On the surface of the motor, a rotating rod is installed. On the surface of the rotating rod, a connecting rod is fixedly connected. On the surface of the connecting rod, a stirring rod is installed.

[0007] A quick-release mechanism, including a threaded pipe, the threaded pipe is movably connected to the surface of the stirring rod. On the surface of the threaded pipe, an anti-slip strip is fixedly connected. On the surface of the stirring rod, a retaining ring and a clamping plate are fixedly connected. On the surface of the connecting rod, a threaded block is fixedly connected. On the surface of the threaded block, a connecting plate is fixedly connected. On the surface of the connecting plate, a connecting groove is opened. On the surface of the clamping plate, a clamping block is fixedly connected.

[0008] Preferably, one end of the threaded pipe is abutted and connected to the surface of the retaining ring, the other end of the threaded pipe is threadedly connected to the surface of the threaded block. One end of the threaded block is fixedly connected to the surface of the connecting rod, and the other end of the threaded block is fixedly connected to the surface of the connecting plate.

[0009] Preferably, there are two sets of the connecting plates, and the two sets of connecting plates are installed on both sides of the threaded block. One end of the engaging plate is fixedly connected to the surface of the stirring rod, and the other end of the engaging plate is abutted and connected to the surface of the threaded block. The length of the connecting plate is the same as that of the engaging plate.

[0010] Preferably, there are two sets of the engaging blocks, and the two sets of engaging blocks are fixedly connected to both sides of the engaging plate. The engaging blocks are engaged and connected to the surface of the connecting groove.

[0011] Preferably, a gate mechanism is arranged on the surface of the feed trough. The gate mechanism includes a partition plate. The partition plate is movably connected to the surface of the feed trough. An activity groove is formed on the surface of the feed trough. A limiting plate is fixedly connected to the inner surface of the feed trough. A mounting block is fixedly connected to the outer surface of the feed trough. A threaded hole is formed inside the mounting block. A torsion ring is arranged outside the mounting block. A threaded rod is fixedly connected to the surface of the torsion ring.

[0012] Preferably, the cross section of the partition plate is in an "L" shape. The partition plate is slidably connected to the surfaces of the activity groove and the limiting plate. There are two sets of the limiting plates, and the two sets of limiting plates are installed on both sides of the partition plate. The surface of the limiting plate is in a "U" shape.

[0013] Preferably, the threaded rod is threadedly connected to the surface of the threaded hole. One end of the threaded rod is fixedly connected to the surface of the torsion ring, and the other end of the threaded rod is abutted and connected to the surface of the partition plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By disassembling the connecting rod and the stirring rod and connecting the connecting rod and the stirring rod through the threaded block, the connecting plate and the engaging plate, and at the same time limiting the connection part under the action of the threaded tube, the purpose of installing the disassembled stirring rod on the connecting rod is achieved. While changing the original connection mode of the bolt assembly, the damaged stirring rod can be replaced more quickly, thereby making the maintenance more efficient and not delaying the screening process.

[0016] 2. By opening an activity groove on the surface of the feed trough and making the partition plate move on its surface, the flow of the sand material in the feed trough can be blocked when the sand material does not need to be added, avoiding the continuous entry of the sand material. At the same time, by controlling the position of the partition plate moved into the feed trough, the amount of the sand material input can be controlled, avoiding the situation that too much sand material is input into the sieve cylinder, resulting in incomplete screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 2 Left perspective three-dimensional schematic diagram of the structure of the present utility model;

[0019] Figure 3 Partial perspective sectional view of the structure of the threaded pipe of the present utility model;

[0020] Figure 4 Perspective three-dimensional schematic diagram of the structure of the partition plate of the present utility model;

[0021] Figure 5 For the present utility model Figure 3 Perspective three-dimensional schematic diagram of the structure of the clamping plate in the present utility model;

[0022] Figure 6 For the present utility model Figure 4 Partial perspective sectional view of the structure of the mounting block in the present utility model.

[0023] In the figure: 1, support frame; 11, feeding groove; 12, motor; 13, rotating rod; 14, connecting rod; 15, stirring rod; 16, sieve cylinder; 17, first discharge groove; 18, second discharge groove; 2, threaded pipe; 21, anti-slip strip; 22, retaining ring; 23, threaded block; 24, connecting plate; 25, clamping plate; 26, connecting groove; 27, clamping block; 3, partition plate; 31, movable groove; 32, limiting plate; 33, mounting block; 34, screw hole; 35, torsion ring; 36, threaded rod. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Please refer to Figures 1-6 , an embodiment provided by the present utility model:

[0026] A sand screening machine for concrete production, comprising:

[0027] The body includes a support frame 1. On the upper surface of the support frame 1, a feeding trough 11, a motor 12, and a sieve cylinder 16 are fixedly connected. On the lower surface of the support frame 1, a first discharge trough 17 and a second discharge trough 18 are fixedly connected. A rotating rod 13 is installed on the surface of the motor 12. A connecting rod 14 is fixedly connected to the surface of the rotating rod 13. A stirring rod 15 is installed on the surface of the connecting rod 14. When screening sand materials, first start the motor 12 to drive the rotating rod 13 to rotate, so as to drive the connecting rod 14 and the stirring rod 15 to rotate around the rotating rod 13. Then put the sand materials into the feeding trough 11, and after being stirred by the stirring rod 15 and screened by the sieve cylinder 16, the sand materials that meet the requirements are discharged from the first discharge trough 17, and the waste materials that do not meet the requirements are discharged from the second discharge trough 18;

[0028] The quick-release mechanism includes a threaded pipe 2. The threaded pipe 2 is movably connected to the surface of the stirring rod 15. Anti-slip strips 21 are fixedly connected to the surface of the threaded pipe 2. A retaining ring 22 and a clamping plate 25 are fixedly connected to the surface of the stirring rod 15. A threaded block 23 is fixedly connected to the surface of the connecting rod 14. A connecting plate 24 is fixedly connected to the surface of the threaded block 23. A connecting groove 26 is formed on the surface of the connecting plate 24. A clamping block 27 is fixedly connected to the surface of the clamping plate 25. Under the action of the anti-slip strips 21, it is more labor-saving and convenient to disassemble and assemble the threaded pipe 2, and the anti-slip strips 21 are arranged in an annular array on the outer surface of the threaded pipe 2.

[0029] Further, one end of the threaded pipe 2 is abutted and connected to the surface of the retaining ring 22, and the other end of the threaded pipe 2 is threadedly connected to the surface of the threaded block 23. One end of the threaded block 23 is fixedly connected to the surface of the connecting rod 14, and the other end of the threaded block 23 is fixedly connected to the surface of the connecting plate 24. Under the action of the threaded pipe 2, the connection between the connecting plate 24 and the clamping plate 25 is limited, thereby realizing the connection between the connecting rod 14 and the stirring rod 15. The outer diameter of the retaining ring 22 is the same as the outer diameter of the threaded pipe 2, and the threaded pipe 2 can be limited by the retaining ring 22 to prevent the threaded pipe 2 from moving under the action of centrifugal force during rotation. At the same time, the threaded pipe 2 can be installed through the threaded block 23.

[0030] Further, there are two groups of connecting plates 24, and the two groups of connecting plates 24 are installed on both sides of the threaded block 23. One end of the clamping plate 25 is fixedly connected to the surface of the stirring rod 15, and the other end of the clamping plate 25 is abutted and connected to the surface of the threaded block 23. The length of the connecting plate 24 is the same as the length of the clamping plate 25. Under the connection of the connecting plate 24 and the clamping plate 25, the connecting rod 14 and the stirring rod 15 are connected. The surface of the connecting plate 24 is arc-shaped, and both sides of the clamping plate 25 are arc-shaped.

[0031] Furthermore, there are two sets of engaging blocks 27, which are fixedly connected to both sides of the engaging plate 25. The engaging blocks 27 are engaged and connected to the surface of the connecting groove 26. Under the connection between the connecting groove 26 and the engaging blocks 27, the connection between the connecting plate 24 and the engaging plate 25 is limited.

[0032] Furthermore, a gate mechanism is arranged on the surface of the feed chute 11. The gate mechanism includes a partition plate 3, which is movably connected to the surface of the feed chute 11. An activity groove 31 is opened on the surface of the feed chute 11. A limiting plate 32 is fixedly connected to the inner surface of the feed chute 11. A mounting block 33 is fixedly connected to the outer surface of the feed chute 11. A threaded hole 34 is opened inside the mounting block 33. A torsion ring 35 is arranged outside the mounting block 33. A threaded rod 36 is fixedly connected to the surface of the torsion ring 35. Under the action of the partition plate 3, the flow of the sand material in the feed chute 11 is blocked, and it can be stopped from entering the sieve cylinder 16 in time when the sand material is put in. The torsion ring 35 and the threaded rod 36 can be installed through the mounting block 33.

[0033] Furthermore, the cross-section of the partition plate 3 is in an "L" shape. The partition plate 3 is slidably connected to the surfaces of the activity groove 31 and the limiting plate 32. There are two sets of limiting plates 32, which are installed on both sides of the partition plate 3. The surface of the limiting plate 32 is in a "U" shape. Under the action of the activity groove 31 and the two sets of limiting plates 32, the installation and limitation of the partition plate 3 are realized and it can move along their surfaces.

[0034] Furthermore, the threaded rod 36 is threadedly connected to the surface of the threaded hole 34. One end of the threaded rod 36 is fixedly connected to the surface of the torsion ring 35, and the other end of the threaded rod 36 is abutted and connected to the surface of the partition plate 3. Under the action of the torsion ring 35, its rotation can drive the rotation of the threaded rod 36, and the threaded rod 36 can play a role in limiting the partition plate 3.

[0035] Working principle: When disassembling the damaged stirring rod 15, first hold the threaded pipe 2 and rotate it under the action of the anti-slip strip 21 to cancel the abutment with the retaining ring 22, and remove the threaded pipe 2 from the surface of the threaded block 23 through the thread connection and place it at the connecting rod 14, thereby exposing the connecting plate 24 and the engaging plate 25. At this time, move the stirring rod 15 to drive the movement of the engaging plate 25 and the engaging blocks 27, so that the engaging plate 25 is removed from the threaded block 23 and the two connecting plates 24, and at the same time, the two engaging blocks 27 and the connecting groove 26 are disengaged, thus completing the disassembly, installation and replacement of the stirring rod 15.

[0036] When the sand screening machine stops screening the sand material, first insert the partition plate 3 into the movable slot 31 and slide it along the two sets of limiting plates 32. Stop moving when the partition plate 3 abuts against the feeding chute 11. At this time, place the threaded rod 36 above the threaded hole 34 and rotate the torsion ring 35 to drive the threaded rod 36 to rotate. The threaded rod 36 is threadedly connected to the threaded hole 34 and finally abuts against the partition plate 3 to limit the partition plate 3, thereby stopping the input of the sand material.

[0037] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A sand screening machine for concrete production, characterized in that: include: The machine body comprises a support frame (1), the upper surface of the support frame (1) is fixedly connected with a feed trough (11), a motor (12) and a screen drum (16), the lower surface of the support frame (1) is fixedly connected with a first discharge trough (17) and a second discharge trough (18), the surface of the motor (12) is mounted with a rotating rod (13), the surface of the rotating rod (13) is fixedly connected with a connecting rod (14), and the surface of the connecting rod (14) is mounted with a stirring rod (15); The quick-release mechanism comprises a threaded tube (2), the threaded tube (2) being movably connected to the surface of a stirring rod (15), the surface of the threaded tube (2) being fixedly connected to an anti-slip strip (21), the surface of the stirring rod (15) being fixedly connected to a retaining ring (22) and a clamping plate (25), the surface of the connecting rod (14) being fixedly connected to a threaded block (23), the surface of the threaded block (23) being fixedly connected to a connecting plate (24), the surface of the connecting plate (24) being provided with a connecting groove (26), and the surface of the clamping plate (25) being fixedly connected to a clamping block (27).

2. A sand screening machine for concrete production according to claim 1, characterized in that: One end of the threaded tube (2) is abutted against the surface of the retaining ring (22), and the other end of the threaded tube (2) is connected to the surface of the threaded block (23) through a thread, one end of the threaded block (23) is fixedly connected to the surface of the connecting rod (14), and the other end of the threaded block (23) is fixedly connected to the surface of the connecting plate (24).

3. A sand screening machine for concrete production according to claim 1, characterized in that: The connecting plates (24) are provided in two groups, and the two groups of connecting plates (24) are installed on both sides of the threaded block (23). One end of the clamping plate (25) is fixedly connected to the surface of the stirring rod (15), and the other end of the clamping plate (25) is abutted against the surface of the threaded block (23). The length of the connecting plate (24) is the same as the length of the clamping plate (25).

4. A sand screening machine for concrete production according to claim 1, characterized in that: The snap-fit ​​blocks (27) are provided in two groups, and the two groups of snap-fit ​​blocks (27) are fixedly connected to the two sides of the snap-fit ​​plate (25), and the snap-fit ​​blocks (27) are snap-fitted to the surface of the connection groove (26).

5. A sand screening machine for concrete production according to claim 1, characterized in that: The surface of the feed trough (11) is provided with a gate mechanism, the gate mechanism comprises a partition (3), the partition (3) is movably connected to the surface of the feed trough (11), the surface of the feed trough (11) is provided with a movable groove (31), the inner surface of the feed trough (11) is fixedly connected to a limit plate (32), the outer surface of the feed trough (11) is fixedly connected to a mounting block (33), the interior of the mounting block (33) is provided with a screw hole (34), the outside of the mounting block (33) is provided with a torsion ring (35), and the surface of the torsion ring (35) is fixedly connected to a threaded rod (36).

6. A sand screening machine for concrete production according to claim 5, characterized in that: The partition (3) has an L-shaped cross section. The partition (3) is slidably connected to the movable groove (31) and the surface of the limit plate (32). Two groups of limit plates (32) are provided. The two groups of limit plates (32) are installed on both sides of the partition (3). The surface of the limit plate (32) is U-shaped.

7. A sand screening machine for concrete production according to claim 5, characterized in that: The threaded rod (36) is connected to the surface of the screw hole (34) through a thread, one end of the threaded rod (36) is fixedly connected to the surface of the torsion ring (35), and the other end of the threaded rod (36) is abutted and connected to the surface of the partition (3).

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