A grading feeding device for a sand making machine

Abstract

The utility model discloses a grading feeding device for a sand making machine, belonging to the technical field of screening equipment; a grading feeding device for a sand making machine comprises a box body, the interior of the box body is provided with screens for multi-stage screening from top to bottom, a vibration motor is provided on the side of the box body, an inclined cleaning plate is provided below the screen, a higher end of the cleaning plate is rotatably mounted on the box body through a rotating shaft, so that the cleaning plate collides with the bottom surface of the screen after rotation, and a feeding port is provided between the lower end of the cleaning plate and the inner wall of the box body; the utility model has the advantages of replacing manual cleaning of materials blocked by the screen and having high cleaning efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a grading feeding device for a sand making machine. Background Art

[0002] Sand and gravel is a mixture of sand and crushed stone. It can be applied to many industries, often based on the construction industry. The construction industry needs sand and gravel as a base material, mixed with cement and other base materials as concrete raw materials. The road industry also uses sand and gravel mixed with asphalt for paving. Sand and gravel are widely used. The particle size of sand and gravel is formed naturally. Considering the application needs of different industries, sand and gravel need to be processed in a centralized manner. Generally, sand making machines are used for crushing. However, the feed size of sand and gravel for different types of sand making machines is different. If it is fed directly, it will cause greater damage to some small-scale sand making machines and affect the subsequent sand making progress.

[0003] Therefore, before the crushing process, it is often necessary to use a screening device to classify the sand and gravel. We know that when the material passes through the screen, in addition to the material of appropriate size that is screened out and the material that passes through the screen hole, there will always be some materials with a size close to the size of the screen hole clamped in the screen hole. After a single or multiple material screening and classification, the material clamped in the screen hole is firmly clamped between the screen due to impact, extrusion, self-weight and other factors. For example, the screen in the invention patent application document with announcement number CN114749261A, the utility model with announcement number CN209061343U, and the utility model with announcement number CN214766092U is located on the inner side of the main structure. When cleaning the blocked material, the operator often needs to hold a hammer or a stick and other tools to hit the screen or the clamped material to separate the two, which is not only time-consuming and laborious, but also because the screens of the existing multi-stage screening device are mostly installed in an overlapping manner, the operating space of the staff is limited, which further affects the cleaning efficiency of the screen. Utility Model Content

[0004] The utility model aims to solve the problem of troublesome screen cleaning of the grading feeding device of the sand making machine in the prior art, and proposes a grading feeding device for the sand making machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A grading feeding device for a sand making machine comprises a box body, wherein screens for multi-stage screening are arranged from top to bottom inside the box body, a vibration motor is arranged on the side of the box body, an inclined cleaning plate is arranged below the screen, a higher end of the cleaning plate is rotatably mounted on the box body through a rotating shaft so that the cleaning plate collides with the bottom surface of the screen after rotation, and a feeding port is arranged between the lower end of the cleaning plate and the inner wall of the box body.

[0007] Furthermore, the box body is open at the top and one end, the screen is inclined, the lower end of the screen is close to the open end of the box body, and the lower ends of multiple screens are respectively connected to corresponding discharge troughs.

[0008] Furthermore, a high end of the cleaning plate is located below a low end of the screen.

[0009] Furthermore, a support rod is provided on one side of the rotating shaft, the support rod is fixedly connected to the box body, and the cleaning plate is movably overlapped with the support rod.

[0010] Furthermore, a cam mechanism is provided at the bottom of the cleaning plate, and the cam mechanism drives the cleaning plate to swing up and down.

[0011] Furthermore, the cam mechanism comprises a driving shaft, one end of which is connected to a driving motor, and a cam structure is provided on the driving shaft.

[0012] Furthermore, the convex block structure includes a roller frame arranged on the circumferential surface of the driving shaft, a roller is arranged between two roller frames, and the roller is axially aligned with the driving shaft.

[0013] Furthermore, a pulley is provided at the end of the driving shaft, two adjacent pulleys are connected by a belt, and the pulley located at the bottom is connected to the working end of the driving motor.

[0014] Compared with the prior art, the utility model provides a grading feeding device for a sand making machine, which has the following beneficial effects:

[0015] The utility model discloses a grading feeding device for a sand making machine. When in use, the material to be screened is poured onto the screen located at the top. Under the action of vibration, the material with a size smaller than the screen hole passes through the screen and falls onto a cleaning plate, and then flows from the cleaning plate to the screen of the next layer until the screening and grading is completed. When the screen needs to be cleaned, the cleaning plate is rotated, and the cleaning plate rotates upward from the bottom of the screen to hit the screen, so that the material clamped in the screen hole is pushed out upward, instead of manually knocking the screen or the material, thereby improving the cleaning efficiency.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the box of the utility model;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of the structure enlargement of part A;

[0020] Figure 4 This is a schematic diagram of the main view of the internal structure of the box of the utility model;

[0021] Figure 5 It is a schematic diagram of the drive shaft and the bump structure of the utility model;

[0022] Figure 6 For the utility model Figure 5 Schematic diagram of the enlarged structure of part B.

[0023] In the figure:

[0024] 1. Box body; 2. Screen; 3. Discharge chute; 4. Vibration motor; 5. Drive motor; 6. Belt; 7. Pulley; 8. Drive shaft; 9. Rotating shaft; 10. Support rod; 11. Cleaning plate; 12. Bump structure; 13. Roller frame; 14. Roller; 15. Discharge port. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-6 The utility model discloses a grading feeding device for a sand making machine, comprising a box body 1, wherein a screen 2 for multi-stage screening is arranged from top to bottom inside the box body 1, a vibration motor 4 is arranged on the side of the box body 1, an inclined cleaning plate 11 is arranged below the screen 2, and a higher end of the cleaning plate 11 is rotatably mounted on the box body 1 through a rotating shaft 9, so that the cleaning plate 11 collides with the bottom surface of the screen 2 after rotation, and a feeding port 15 is arranged between the lower end of the cleaning plate 11 and the inner wall of the box body 1.

[0027] A shock absorber is installed at the bottom of the box 1 to reduce the vibration effect transmitted from the box 1 to the ground, and the screen 2 is driven by the vibration motor 4 to vibrate the material for screening.

[0028] The width of the cleaning plate 11 is the same as that of the screen. After the cleaning plate 11 rotates, it hits the bottom surface of the screen 2, replacing the manual use of tools to knock the screen 2 from the bottom upward. Because when the material is clamped in the screen hole, it is normally necessary to knock the material out of the screen from the bottom up. Therefore, for the material that obviously protrudes downward from the screen, the cleaning plate 11 directly knocks the material and pushes the material upward, so that multiple blocked materials can be cleaned at one time, and the cleaning efficiency is high.

[0029] The cleaning work is carried out after each screening work is completed when there is no squeezed material on the screen.

[0030] The box body 1 is open at the top and one end, the screen 2 is inclined, the lower end of the screen 2 is close to the open end of the box body 1, and the lower ends of the plurality of screens 2 are respectively connected to corresponding discharge troughs 3.

[0031] Use a feeding device or a loader to pour materials from the top opening of the box 1 onto the screen 2. The materials are screened and flow to the lower end of the screen 2. The materials that do not pass through the screen holes flow into the corresponding discharge trough 3. The discharge trough 3 can be connected to the inlet of a corresponding model of a crusher to provide feeding operation for the crusher.

[0032] The material passing through the sieve holes falls onto the cleaning plate 11, continues to flow toward the lower end of the cleaning plate 11, passes through the discharge port 15, and falls onto the screen 2 of the next layer for the next level of screening operation.

[0033] The high end of the cleaning plate 11 is located below the low end of the screen 2 .

[0034] The screen 2 and the cleaning plate 11 are staggered and arranged in a "Z" shape. The material falling from the cleaning plate 11 falls into the higher end of the next screen 2, which makes it easier for the material to pass through the entire screen 2 to complete the screening work, and the screening is more sufficient.

[0035] A support rod 10 is provided on one side of the rotating shaft 9 . The support rod 10 is fixedly connected to the box body 1 , and the cleaning plate 11 is movably overlapped with the support rod 10 .

[0036] When the cleaning plate 11 is not rotating, one end is supported by the rotating shaft 9 , and the part away from the rotating shaft 9 is supported by the supporting rod 10 . The cleaning plate 11 is installed at an angle on the inner side of the box body 1 .

[0037] A cam mechanism is provided at the bottom of the cleaning plate 11, and the cam mechanism drives the cleaning plate 11 to swing up and down.

[0038] When the cam mechanism rotates, the cleaning plate 11 is lifted periodically, and the cleaning plate 11 hits the screen 2 to clean the blocked materials. When the cleaning plate 11 falls, it falls on the support rod 10 and is supported by the support rod 10.

[0039] The cam mechanism comprises a driving shaft 8 , one end of which is connected to the driving motor 5 , and a cam structure 12 is provided on the driving shaft 8 .

[0040] The axial direction of the driving shaft 8 is parallel to the axial direction of the rotating shaft 9 and perpendicular to the flow direction of the material on the cleaning plate 11. When the driving motor 5 drives the driving shaft 8 to rotate, the protrusion structure 12 periodically approaches or moves away from the bottom of the cleaning plate 11, causing the cleaning plate 11 to swing up and down periodically to impact the screen 2.

[0041] The convex block structure 12 includes a roller frame 13 arranged on the circumferential surface of the driving shaft 8 , a roller 14 is arranged between two roller frames 13 , and the roller 14 is axially aligned with the driving shaft 8 .

[0042] When the bump structure 12 approaches the cleaning plate 11, the roller 14 contacts the cleaning plate 11 and pushes the cleaning plate 11 upward. The rolling contact between the roller 14 and the bottom of the cleaning plate 11 can effectively reduce the friction generated when the cam mechanism 12 contacts the cleaning plate 11, thereby reducing wear, compared to sliding contact.

[0043] A pulley 7 is provided at the end of the driving shaft 8 , and two adjacent pulleys 7 are connected by a belt 6 , and the pulley 7 at the bottom is connected to the working end of the driving motor 5 .

[0044] The driving motor 5 drives the pulley 7 to rotate through the belt 6, and further drives the driving shaft 8 to rotate, which is used to drive the cleaning plate 11 to swing and uniformly clean multiple screens 2; of course, there can also be a one-to-one connection relationship between the driving shaft 8 and the driving motor 5, so that a single screen 2 can be targetedly cleaned as needed, and it can be selected according to actual needs.

[0045] Working principle: When in use, start the vibration motor 4, pour the material to be screened onto the screen 2 at the top, and under the action of vibration, the material that has not passed through the screen holes flows to the lower end of the screen 2 and flows into the discharge trough 3, and the material that has passed through the screen holes falls down onto the cleaning plate 11, and then flows from the cleaning plate 11 to the next layer of the screen 2, until the screening and grading is completed;

[0046] When the screen 2 needs to be cleaned, the driving motor 5 is started, and the driving shaft 8 is driven to rotate through the cooperation of the belt 6 and the pulley 7. The driving shaft 8 drives the convex structure 12 to rotate. The convex structure 12 periodically lifts the cleaning plate 11, and the cleaning plate 11 rotates around the rotating shaft 9 to hit the screen 2. The cleaning plate 11 swings periodically and hits the screen 2 from the bottom to the top, pushing the material clamped in the screen hole upward, thereby cleaning out the blocked material.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A grading feeding device for a sand making machine, comprising a box (1), wherein the box (1) is provided with screens (2) for multi-stage screening from top to bottom, and a vibration motor (4) is provided on the side of the box (1), characterized in that: An inclined cleaning plate (11) is provided below the screen (2); the higher end of the cleaning plate (11) is rotatably mounted on the box (1) via a rotating shaft (9) so that the cleaning plate (11) collides with the bottom surface of the screen (2) after rotation; a material discharge port (15) is provided between the lower end of the cleaning plate (11) and the inner wall of the box (1).

2. A sand making machine grading feeding device according to claim 1, characterized in that: The box body (1) is open at the top and one end, the screen (2) is arranged obliquely, the lower end of the screen (2) is close to the open end of the box body (1), and the lower ends of the plurality of screens (2) are respectively connected to corresponding discharge troughs (3).

3. A sand making machine grading feeding device according to claim 2, characterized in that: The higher end of the cleaning plate (11) is located below the lower end of the screen (2).

4. A sand making machine grading feeding device according to claim 1, characterized in that: A support rod (10) is provided on one side of the rotating shaft (9); the support rod (10) is fixedly connected to the box body (1); and the cleaning plate (11) is movably overlapped with the support rod (10).

5. A grading feeding device for a sand making machine according to claim 1, characterized in that: A cam mechanism is provided at the bottom of the cleaning plate (11), and the cam mechanism drives the cleaning plate (11) to swing up and down.

6. A grading feeding device for a sand making machine according to claim 5, characterized in that: The cam mechanism comprises a drive shaft (8), one end of the drive shaft (8) is connected to a drive motor (5), and a cam structure (12) is provided on the drive shaft (8).

7. A grading feeding device for a sand making machine according to claim 6, characterized in that: The convex block structure (12) comprises a roller frame (13) arranged on the circumferential surface of the drive shaft (8), a roller (14) is arranged between two roller frames (13), and the roller (14) is axially aligned with the drive shaft (8).

8. A grading feeding device for a sand making machine according to claim 6, characterized in that: A pulley (7) is provided at the end of the driving shaft (8), two adjacent pulleys (7) are connected via a belt (6), and the pulley (7) located at the bottom is connected to the working end of the driving motor (5).

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