A sand and gravel separation device

Abstract

This invention provides a sand and gravel separation device, belonging to the field of separation and conveying technology. It includes a frame, a screen cylinder, and an adjusting mechanism. The screen cylinder includes a support shaft, a first support ring, a second support ring, and multiple screen plate modules. The screen plate modules are located between the first and second support rings and form an annular screen coaxial with the support shaft. The adjusting mechanism can control the screen plate modules to open and retract in a cyclical manner for cleaning. Alternatively, the adjusting mechanism can control the screen plate modules to open, expanding the internal space and facilitating worker cleaning, thus improving separation efficiency and solving the problems of difficult cleaning and reduced efficiency in existing technologies.

Description

Technical Field

[0001] This invention belongs to the technical field of material separation and conveying equipment, and specifically relates to a sand and gravel separation device. Background Technology

[0002] Sand and gravel separation is a process of screening sand and gravel materials based on particle size. In existing technologies, screens or screen cylinders are generally used for sand and gravel screening and separation. Materials with a particle size smaller than the mesh size pass through the screen or screen cylinder and are discharged, while materials with a particle size larger than the mesh size are discharged from the other end of the screen or screen cylinder. Screens are usually equipped with vibrating motors to separate and convey sand and gravel through up-and-down vibration. However, screen cylinders generally only rotate, which can lead to sand and gravel getting stuck in the mesh, affecting separation efficiency and making subsequent cleaning difficult. Summary of the Invention

[0003] The present invention aims to solve at least one of the aforementioned technical problems existing in the prior art. To this end, the present invention provides a sand and gravel separation device that facilitates cleaning of the screen cylinder.

[0004] A sand and gravel separation device according to an embodiment of the present invention includes:

[0005] frame;

[0006] The sieve cylinder includes a support shaft, a first support ring, a second support ring, and multiple sieve plate modules. The support shaft is inclined relative to the horizontal direction and rotatably mounted on the frame. The first support ring and the second support ring are coaxially fixed on the support shaft. The sieve plate modules are disposed between the first support ring and the second support ring and enclose to form an annular sieve mesh coaxial with the support shaft.

[0007] An adjustment mechanism is provided between the first support ring and the sieve plate module for controlling the opening and closing adjustment of the end of the sieve plate module near the first support ring, and / or is provided between the second support ring and the sieve plate module for controlling the opening and closing adjustment of the end of the sieve plate module near the second support ring.

[0008] The sand and gravel separation device according to the embodiments of the present invention has at least the following beneficial effects: The sand and gravel separation device of the present invention forms a screen cylinder by enclosing multiple screen plate modules to perform sand and gravel separation operations. When sand and gravel get stuck in the mesh, the screen plate modules can be opened and retracted in a cycle by adjusting the mechanism to clean them. Alternatively, the screen plate modules can be opened by adjusting the mechanism to expand the internal space, making it easier for workers to clean and helping to improve separation efficiency. This solves the problems of difficult cleaning and reduced efficiency in the prior art.

[0009] According to some embodiments of the present invention, the sieve plate module includes:

[0010] The frame includes a main rod and multiple secondary rods, wherein the main rod is parallel to the support axis and the secondary rods are evenly distributed along the length of the main rod;

[0011] The screen plate has multiple sieve holes and is set on the frame, supported by the main rod and the auxiliary rod.

[0012] According to some embodiments of the present invention, the secondary rod includes a first secondary rod and a second secondary rod, the first secondary rod is attached to the mesh plate, one end of the second secondary rod is connected to the main rod, the other end is connected to the first secondary rod, and the second secondary rod is arched in a direction away from the first secondary rod.

[0013] According to some embodiments of the present invention, the mesh plate has an arc with the axis of the support shaft as the center of curvature.

[0014] According to some embodiments of the present invention, one end of the sieve plate module is rotatably connected to the first support ring, and the other end extends into the inner ring of the second support ring. The adjustment mechanism is disposed between the other end of the sieve plate module and the second support ring.

[0015] According to some embodiments of the present invention, the adjusting mechanism includes:

[0016] An adjustment part is provided on the second support ring, which is movable and adjustable in a direction parallel to the support axis;

[0017] The linkage unit connects the adjustment unit and the sieve plate module, and is used to drive the sieve plate module to open and close while the adjustment unit moves.

[0018] According to some embodiments of the present invention, the adjusting mechanism further includes a telescopic drive unit, the adjusting unit including an adjusting ring sleeved on the inner ring of the second support ring, each of the screen plate modules being connected to the adjusting ring through a linkage unit, the telescopic drive unit being driven to the adjusting ring for controlling the axial movement of the adjusting ring along the support shaft.

[0019] According to some embodiments of the present invention, the sand and gravel separation device further includes a first conveying mechanism, the first conveying mechanism including a vibrating screen, the vibrating screen being rotatably mounted on the frame and located below the screen cylinder, the vibrating screen being able to switch from the same tilt direction as the support shaft to the opposite direction by rotation.

[0020] According to some embodiments of the present invention, the sand and gravel separation device further includes a chassis located directly below the vibrating screen and defining a wastewater tank with an upper opening.

[0021] According to some embodiments of the present invention, the sand and gravel separation device further includes a drive mechanism, which is tractively connected to the support shaft and is used to control the rotation of the support shaft.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of an overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of a radial structure of a sieve cylinder;

[0026] Figure 3 This is a schematic diagram of the sieve plate module.

[0027] Figure 4 A schematic diagram of a regulating mechanism;

[0028] Figure 5 This is a schematic diagram showing the enclosure of the six sieve plate modules;

[0029] Figure 6 This is a schematic diagram showing one of the open states of the sieve plate module. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0033] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0034] Sand and gravel separation is a process of screening sand and gravel materials based on particle size. In existing technologies, screens or screen cylinders are generally used for sand and gravel screening and separation. Materials with a particle size smaller than the mesh size pass through the screen or screen cylinder and are discharged, while materials with a particle size larger than the mesh size are discharged from the other end of the screen or screen cylinder. Screens are usually equipped with vibrating motors to separate and convey sand and gravel through up-and-down vibration. However, screen cylinders generally only rotate, which can lead to sand and gravel getting stuck in the mesh, affecting separation efficiency and making subsequent cleaning difficult.

[0035] Therefore, the present invention provides a sand and gravel separation device that facilitates cleaning of the screen cylinder.

[0036] Reference Figures 1 to 6 As shown, an embodiment of the sand and gravel separation device of the present invention includes a frame 100, a screen cylinder 200, and an adjustment mechanism. The screen cylinder 200 includes a support shaft 205, a first support ring 206, a second support ring 207, and multiple screen plate modules. The support shaft 205 is inclined relative to the horizontal direction and rotatably mounted on the frame 100, specifically using a bearing seat for installation. The first support ring 206 and the second support ring 207 are coaxially fixed on the support shaft 205. The screen plate modules are disposed between the first support ring 206 and the second support ring 207, forming an annular screen coaxial with the support shaft 205. The adjustment mechanism is disposed between the first support ring 206 and the screen plate modules, for controlling the opening and closing adjustment of the end of the screen plate modules near the first support ring 206, and / or, disposed between the second support ring 207 and the screen plate modules, for controlling the opening and closing adjustment of the end of the screen plate modules near the second support ring 207.

[0037] Understandably, the adjustment mechanism can be implemented in various ways depending on its installation location. When the adjustment mechanism is simultaneously located at both ends of the sieve plate module and connected to the first support ring 206 and the second support ring 207 respectively, the two ends of the sieve plate module can be moved and adjusted simultaneously through the adjustment mechanism to achieve the opening and closing adjustment of the annular screen. When the adjustment mechanism is only located at one end of the sieve plate module, only the corresponding end is controlled to open and close.

[0038] The sand and gravel separation device of the present invention uses multiple screen plate modules to form a screen cylinder 200 for sand and gravel separation. When sand and gravel get stuck in the mesh, the screen plate modules can be opened and retracted in a cycle by adjusting the mechanism to clean them. Alternatively, the screen plate modules can be opened by adjusting the mechanism to expand the internal space, making it easier for workers to clean and improving separation efficiency. This solves the problems of difficult cleaning and reduced efficiency in the prior art.

[0039] Reference Figure 2 and Figure 5 , Figure 6 In some embodiments of the present invention, the sieve plate module includes a frame and a mesh plate 201. The frame has a main rod 202 and multiple auxiliary rods. The main rod 202 is parallel to the support shaft 205, and the auxiliary rods are evenly distributed along the length of the main rod 202. The mesh plate 201 is mounted on the frame and supported by the frame. The mesh plate 201 has multiple sieve holes. It is understood that in this embodiment, the main rod 202 of the frame can support the mesh plate 201 along the axial direction of the support shaft 205, and the auxiliary rods extend to both sides of the main rod 202 as the center to support other positions of the mesh plate 201, thereby ensuring the structural strength of the mesh plate 201.

[0040] Considering that existing technologies require multiple radial and circumferential processing structures for the screen cylinder 200 to ensure its structural strength and stability, the present invention uses a split structure formed by splicing multiple screen plate modules to create the screen cylinder 200, which would affect its strength and stability. Therefore, reinforcing ribs can be provided along the thickness direction of the main rod 202 and the secondary rods to improve their strength. Furthermore, in some embodiments, the secondary rods include a first secondary rod 203 and a second secondary rod 204. The first secondary rod 203 is attached to the mesh plate 201, and one end of the second secondary rod 204 is connected to the main rod 202, while the other end is connected to the first secondary rod 203. The second secondary rod 204 arches away from the first secondary rod 203. The position where the second secondary rod 204 connects to the first secondary rod 203 can be flexibly set as needed, such as connecting to the midpoint or end position of the first secondary rod 203, or simultaneously connecting to both the midpoint and end position of the first secondary rod 203. It is understood that in this embodiment, the mesh plate 201 is located at the proximal end of the frame. With the structural configuration of this embodiment, along the axial direction of the support shaft 205, the frame uses the main rod 202 to support the mesh plate 201, while around the support shaft 205, the first auxiliary rod 203 supports and reinforces the mesh plate 201, and the second auxiliary rod 204 supports the end of the first auxiliary rod 203 away from the support shaft 205, thereby improving the stress strength of the mesh plate 201 in the radial direction relative to the support shaft 205.

[0041] Furthermore, considering that the sieve cylinder 200 is formed by multiple sieve plate modules, maintaining a large pressure between adjacent mesh plates 201 for a long period to ensure adhesion would damage the fatigue strength of the material and also harm the connection between the frame and the mesh plates 201. Therefore, in some embodiments of the present invention, an installation gap is maintained between adjacent mesh plates 201, the width of which is smaller than the diameter of the sieve holes on the mesh plate 201. With the structural arrangement of this embodiment, adjacent mesh plates 201 will not contact each other during adjustment by the adjustment mechanism, thus effectively avoiding the aforementioned problems.

[0042] In some embodiments of the present invention, the mesh plate 201 has an arc with the axis of the support shaft 205 as the center of curvature. This better encloses and forms a ring-shaped screen.

[0043] In some embodiments of the present invention, the proximal end of the mesh plate 201 is provided with a structure opposite to the main rod 202 and the first auxiliary rod 203, thereby further improving the structural strength of the mesh plate 201 inside the mesh plate 201.

[0044] Reference Figure 4 and Figure 6 In some embodiments of the present invention, one end of the sieve plate module is rotatably connected to the first support ring 206, and the other end extends into the inner ring of the second support ring 207. An adjustment mechanism is located between the other end of the sieve plate module and the second support ring 207. This allows the adjustment mechanism to control the opening and closing of the end of the sieve plate module closest to the second support ring 207, while the other end of the sieve plate module rotates accordingly. It is understood that the positions of the first support ring 206 and the second support ring 207 along the axial direction of the support shaft 205 can be flexibly set, such that the installation position of the first support ring 206 is higher than the installation position of the second support ring 207, or lower than the installation position of the second support ring 207.

[0045] Reference Figure 4 In some embodiments of the present invention, the adjusting mechanism includes an adjusting part and a linkage part. The adjusting part is movably and adjustably disposed on the second support ring 207 in a direction parallel to the support shaft 205. The linkage part is connected between the adjusting part and the sieve plate module, and is used to drive the sieve plate module to open and close while the adjusting part moves. Since the sieve plate module is located inside the second support ring 207, it facilitates the connection between the adjusting part and the linkage part. It is understood that during the adjustment process of the adjusting part, the angle of the linkage part relative to the support shaft 205 is always maintained in the range of greater than 0° and less than 90°, that is, it will not be parallel to the support shaft 205, nor perpendicular to the support shaft 205, thus avoiding dead points in the movement.

[0046] Reference Figure 4In some embodiments of the present invention, the adjusting mechanism further includes a telescopic drive unit. The adjusting unit includes an adjusting ring 208 fitted onto the inner ring of the second support ring 207. Each screen plate module is connected to the adjusting ring 208 via a linkage unit. The telescopic drive unit is connected to the adjusting ring 208 for controlling the axial movement of the adjusting ring 208 along the support shaft 205. By moving the adjusting ring 208 along the support shaft 205, all screen plate modules can be simultaneously adjusted for opening and closing.

[0047] Reference Figure 1 In some embodiments of the present invention, the sand and gravel separation device further includes a first conveying mechanism, which includes a vibrating screen 300. The vibrating screen 300 is rotatably mounted on the frame 100 and located below the screen cylinder 200. The vibrating screen 300 can be switched from the same tilt direction as the support shaft 205 to the opposite direction by rotation. The vibrating screen 300 is used to receive and convey the fine sand filtered by the screen cylinder 200. It is understood that both the screen cylinder 200 and the vibrating screen 300 have their own conveying structures connected to their respective output ends, which will not be described in detail here. Since the screen cylinder 200 is cleaned by opening and closing adjustment, the material falling during cleaning is not the material that meets the screening conditions. In this embodiment, by controlling the vibrating screen 300 to rotate to tilt to the other side, the material falling into the corresponding conveying structure during the cleaning process can be avoided, which facilitates cleaning. The vibrating screen 300 is equipped with a vibrating motor to speed up the conveying efficiency.

[0048] In some embodiments of the present invention, the sand and gravel separation device further includes a chassis located directly below the vibrating screen 300 and defining a wastewater tank with an upper opening. Considering that wastewater may be generated during the sand and gravel separation process, this embodiment uses a chassis to collect and receive the wastewater, which helps improve the on-site environment.

[0049] In some embodiments of the present invention, the sand and gravel separation device further includes a drive mechanism, which is connected to the support shaft 205 for controlling the rotation of the support shaft 205.

[0050] Reference Figures 1 to 6In some embodiments of the present invention, the sand and gravel separation device includes a frame 100, on which a support shaft 205, with a left-high and right-low orientation, is mounted via bearing seats. A belt motor is also provided to drive the support shaft 205 to rotate. From left to right, the support shaft 205 has a first support ring 206 and a second support ring 207, both fixed to the support shaft 205 by multiple spokes, with the second support ring 207 being larger than the first support ring 206. The spokes of the second support ring 207 have an irregular shape, bent away from the first support ring 206. Six screen plate modules are circumferentially mounted on the first support ring 206, with a spacing between adjacent modules. The screen plate modules are rotatably connected to the first support ring 206, with the other end of each module passing through the second support ring 207, avoiding interference through the irregularly shaped spokes of the second support ring 207. The screen plate module includes a frame and a screen plate 201. A main rod 202 is arranged along the length of the support shaft 205 of the frame. The main rod 202 is rotatably connected to a first support ring 206, and its other end extends through a second support ring 207. Arc-shaped first auxiliary rods 203 are arranged on both sides of the main rod 202. Corresponding to each first auxiliary rod 203, the frame has a second auxiliary rod 204. One end of the second auxiliary rod 204 is connected to the main rod 202, and the other end extends and bends away from the support shaft 205 before connecting to the first auxiliary rod 203. The screen plate 201 is detachably mounted on the proximal ends of the main rod 202 and the first auxiliary rods 203 by bolts. Reinforcing ribs are provided along the axial and circumferential directions of the support shaft 205 at the end of the screen plate 201 near the support shaft 205. Shaft seats are provided at the upper end and on both sides of the second support ring 207, with the axis of the shaft seats parallel to the support shaft 205. The shaft seats on both sides are distributed at a 120° central angle with the shaft seat at the upper end. A second support ring 207 has an adjusting ring 208 slidably mounted on it via a shaft seat. The adjusting ring 208 has three guide posts 209 passing through the shaft seat. Six connecting rods 210 are hinged to the inner ring of the adjusting ring 208, distributed circumferentially around it. The other end of each connecting rod 210 is hinged to a main rod 202. A telescopic hydraulic cylinder connected to the adjusting ring 208 is also mounted on the second support ring 207. Under normal conditions, the telescopic hydraulic cylinder remains in the retracted position, and the screen plate 201 remains parallel to the support shaft 205, forming an annular screen. Driven by a belt motor, the support shaft 205 rotates, feeding material into the annular screen from the left side for material separation. Coarse material exits from the right side of the annular screen, while fine material exits from below. When cleaning of the annular screen is required, the telescopic hydraulic cylinder extends, driving the adjusting ring 208 to move. This, in turn, uses the connecting rod 210 to drive each main rod 202 to rotate outward around its left end, causing the six screen plates 201 to open. Through reciprocating opening and closing, combined with the rotation of the support shaft 205, automatic cleaning can be achieved.The structure of this embodiment utilizes gravity to ensure that the screen plate module is in a closed, annular screen state under normal conditions. The screen plate 201 is detachable and can be replaced independently in case of wear, extending the service life of the equipment.

[0051] The present invention has been described in detail above with reference to the embodiments. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A sand and gravel separation device, characterized in that, include: frame; The sieve cylinder includes a support shaft, a first support ring, a second support ring, and multiple sieve plate modules. The support shaft is inclined relative to the horizontal direction and rotatably mounted on the frame. The first support ring and the second support ring are coaxially fixed on the support shaft. The sieve plate modules are disposed between the first support ring and the second support ring and enclose to form an annular sieve mesh coaxial with the support shaft. An adjustment mechanism is provided between the second support ring and the sieve plate module, and is used to control the opening and closing adjustment of the end of the sieve plate module near the second support ring; One end of the sieve plate module is rotatably connected to the first support ring, and the other end extends into the inner ring of the second support ring. The adjustment mechanism is located between the other end of the sieve plate module and the second support ring. The adjustment mechanism includes: an adjustment part, which is movably and adjustably disposed on the second support ring in a direction parallel to the support axis; A linkage unit is connected between the adjustment unit and the sieve plate module, used to drive the sieve plate module to open and close while the adjustment unit moves; the adjustment mechanism also includes a telescopic drive unit, the adjustment unit includes an adjustment ring fitted into the inner ring of the second support ring, each sieve plate module is connected to the adjustment ring through a linkage unit, and the telescopic drive unit is connected to the adjustment ring for controlling the adjustment ring to move axially along the support shaft.

2. The sand and gravel separation device according to claim 1, characterized in that, The sieve plate module includes: The frame includes a main rod and multiple secondary rods, wherein the main rod is parallel to the support axis and the secondary rods are evenly distributed along the length of the main rod; The screen plate has multiple sieve holes and is set on the frame, supported by the main rod and the auxiliary rod.

3. The sand and gravel separation device according to claim 2, characterized in that, The auxiliary rod includes a first auxiliary rod and a second auxiliary rod. The first auxiliary rod is attached to the mesh panel. One end of the second auxiliary rod is connected to the main rod, and the other end is connected to the first auxiliary rod. The second auxiliary rod is arched in a direction away from the first auxiliary rod.

4. The sand and gravel separation device according to claim 2, characterized in that, The mesh plate has an arc with the axis of the support shaft as the center of curvature.

5. The sand and gravel separation device according to claim 1, characterized in that, The sand and gravel separation device further includes a first conveying mechanism, which includes a vibrating screen. The vibrating screen is rotatably mounted on the frame and located below the screen cylinder. The vibrating screen can be switched from the same tilt direction as the support shaft to the opposite direction by rotation.

6. The sand and gravel separation device according to claim 5, characterized in that, The sand and gravel separation device also includes a chassis located directly below the vibrating screen and defining a wastewater tank with an opening at the top.

7. The sand and gravel separation device according to claim 1, characterized in that, The sand and gravel separation device also includes a drive mechanism, which is connected to the support shaft and is used to control the rotation of the support shaft.

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