Concrete aggregate screening device
By using an external drive and built-in vibration linkage design, the problem of high vibration energy consumption and inconvenient maintenance of traditional concrete aggregate screening devices is solved, achieving efficient screening and self-sealing functions, and improving the operational reliability and screening efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional concrete aggregate screening devices suffer from problems such as high vibration energy loss, easy damage to the box body, and inconvenient maintenance. Furthermore, they are prone to resonant fatigue damage and intrusion of foreign objects when shut down.
The design adopts an external drive and built-in vibration. Through the linkage of the external drive component and the built-in vibration component, the screen is driven by a cylinder drive rod to vibrate. When the machine stops, it automatically switches to a sealed state to avoid high-frequency mechanical impact and resonance fatigue.
It improves screening efficiency, reduces equipment failure rate, simplifies maintenance operations, prevents foreign object intrusion, and enhances the mechanization efficiency and screening effect of the equipment.
Smart Images
Figure CN224025623U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of screening equipment, in particular to a concrete aggregate screening device. BACKGROUND
[0002] In construction engineering, the quality and particle size distribution of concrete aggregate have a crucial influence on the performance of concrete. In order to obtain aggregate of different particle sizes meeting the requirements, it is usually necessary to use a screening device to screen and classify it.
[0003] There are two typical technical routes for conventional screening devices: one adopts a whole box vibration mode, drives the whole box to vibrate by an external exciter to drive the screen to work, this kind of structure simplifies the internal mechanism, but the vibration energy is greatly lost, and the box is easy to be structurally damaged by long-term high-frequency mechanical impact; the other adopts a local screen vibration mode, directly embeds the driving motor, eccentric block and other vibration mechanisms in the box, although it can reduce energy consumption, but the maintenance of the driving assembly is extremely inconvenient in the narrow space, and the screen vibration mechanism of this kind of structure still keeps rigid contact with the screen when it is stopped, residual vibration is easy to induce the resonance of the screen and the box, and accelerate the fatigue fracture of the screen. CONTENT OF THE INVENTION
[0004] The present application provides a concrete aggregate screening device to improve the above technical problems.
[0005] The technical scheme adopted by the present application is as follows:
[0006] A concrete aggregate screening device, comprising a box and a screen arranged in the box, the box is provided with an inlet and an outlet, the concrete aggregate screening device further comprises a vibration mechanism, the vibration mechanism comprises a driving member and a vibrating member, the driving member is arranged on the outside of the box, the vibrating member is arranged on the inside of the box, the side of the box is provided with a window, the driving member is provided with a driving rod which can reciprocate, the driving rod passes through the window into the box obliquely upwards and connects the vibrating member, and the driving rod drives the screen to vibrate through the vibrating member when reciprocating.
[0007] In the technical scheme, the driving member of the vibration mechanism is externally arranged on the box, the vibrating member drives the screen to vibrate under the driving of the driving rod obliquely penetrating into the box, realizing the linkage design of external driving and internal vibration, avoiding frequent disassembly of the box due to maintenance of the driving member, and also avoiding that the whole vibration of the screening device causes the box to bear long-term high-frequency mechanical impact, the vibrating member directly drives the screen to vibrate to provide strong and targeted vibration for the screen, effectively improving the vibration effect of the screen, and promoting the aggregate to fully tumble and flow on the screen, thereby significantly improving the screening efficiency.
[0008] The driving rod has a stop position for driving the vibrating member to separate from the screen, at the stop position, the vibrating member closes the window.
[0009] In the technical solution, the driving rod drives the vibrating piece to separate from the screen mesh when the driving rod stops, so that resonance fatigue damage caused by rigid contact between the vibrating piece and the screen mesh in the prior art can be eliminated, and the automatic closing of the window in the stop state is not required, so that the mechanical efficiency of the equipment is improved, and the closing of the window can effectively prevent external foreign matters (such as rainwater and dust) from entering the box through the window in the stop state.
[0010] The vibrating piece is provided in a flat plate structure, and the vibrating piece is movably connected with the driving rod, so that the vibrating piece drives the screen mesh to vibrate in a horizontal state, and the vibrating piece closes the window in a vertical state.
[0011] In the technical solution, the flat plate vibrating piece can efficiently transmit vibration to the screen mesh in the horizontal state, and completely covers the window in the vertical state, so that the vibrating driving and the window sealing are simultaneously realized by using a single component, the switching between the vibration and the leakage prevention function is realized, the structure is simplified, and manual operation is avoided.
[0012] The vibrating piece is hinged to the driving rod, and the vibrating piece can be switched from the horizontal state to the vertical state under the action of gravity.
[0013] In the technical solution, the vibrating piece is hinged to the driving rod, and the vibrating piece is automatically switched from the horizontal vibration state to the vertical sealing state under the action of gravity, so that a locking mechanism or a sensor is not required, the reliability of the self-sealing in the stop state is improved, and the failure rate is reduced.
[0014] The box body is provided with a plurality of support legs at intervals in the circumferential direction, and the driving piece is mounted on the support legs.
[0015] In the technical solution, the support legs have the functions of supporting the box body and mounting the driving piece; the driving piece is fixed to the outer side wall of the support leg, the driving rod of the driving piece is obliquely upwardly connected with the vibrating piece through the side wall window of the box body, and the external driving forms an oblique transmission closed power transmission path; and the space between the bottom of the box body and the ground is used to accommodate a material receiving device, so that the screening and the material receiving processes are seamlessly connected.
[0016] The driving piece is provided as a cylinder, and the driving rod is a piston rod of the cylinder.
[0017] In the technical solution, the cylinder is used as the driving piece, the linear reciprocating motion of the piston rod is used to accurately control the vibration amplitude and frequency, the influence of the vibration parameters caused by the wear of an eccentric block in the traditional motor driving is avoided, and the consistency of the screening efficiency is improved.
[0018] The feeding port is arranged at the top of the box body, and the projection of the vibrating piece on the horizontal plane is located outside the projection of the feeding port on the horizontal plane.
[0019] In the technical solution, the projection of the feeding port is located outside the projection of the vibrating piece, so that the falling track of the aggregate is ensured to avoid the vibrating piece active area, the structure deformation or blockage caused by the direct impact of the aggregate on the vibrating piece is prevented, and the aggregate is also prevented from being accumulated in the gap between the vibrating piece and the screen mesh.
[0020] The box comprises a cylindrical wall and a conical wall with a gradually reduced inner diameter from top to bottom, the discharge port is arranged at the bottom of the conical wall, the screen is connected to the inner side of the cylindrical wall, and the window is arranged on the cylindrical wall.
[0021] In the technical scheme, the upper part of the box is a cylindrical wall providing a stable screening space, and the lower part is a conical wall guiding the fast concentration of the screened aggregate to the discharge port, thereby reducing the aggregate residue, and the window is arranged on the cylindrical wall of the upper part of the box. Since the cylindrical wall is a vertical structure, the aggregate falls to the conical wall area under the action of gravity during the screening process, and the height of the window is far away from the main trajectory of the aggregate, thereby fundamentally avoiding the leakage of the material through the window.
[0022] As the above technical scheme is adopted, the application can achieve the following effects: the driving part of the vibration mechanism is arranged outside the box, the vibration part vibrates the screen under the driving of the driving rod obliquely penetrating into the box, linkage design of external driving and internal vibration is achieved, frequent disassembly of the box for maintenance of the driving part is avoided, and the whole vibration of the screening device to cause the box to bear long-term high-frequency mechanical impact is also avoided. The vibration of the screen by the vibration part can provide strong and targeted vibration for the screen, effectively improve the vibration effect of the screen, and promote the aggregate to fully tumble and flow on the screen, thereby significantly improving the screening efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0023] The accompanying drawings, which are included to provide a further understanding of the present application, form a part of the present application and are included to further explain the present application and, together with the specification, make up the present application. In the drawings:
[0024] Figure 1 Structure of the concrete aggregate screening device provided by the embodiment of the present application Figure 1 which shows the state of the vibration part in the stop position;
[0025] Figure 2 Structure of the concrete aggregate screening device provided by the embodiment of the present application Figure 2 which shows the state of the vibration part in the stop position.
[0026] List of components and reference numerals:
[0027] 1 box; 11 feed inlet; 12 discharge port; 13 cylindrical wall; 14 conical wall;
[0028] 21 cylinder; 22 piston rod; 23 movable hinge; 24 vibration part;
[0029] 3 screen;
[0030] 4 window;
[0031] 5 support leg. DETAILED DESCRIPTION
[0032] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.
[0033] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application. Therefore, the scope of the present application is indicated by the appended claims rather than the foregoing description.
[0034] In addition, in the description of the present application, it is to be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0035] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0036] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0037] In the embodiments of this application, a concrete aggregate screening device is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.
[0038] like Figures 1-2 As shown, the concrete aggregate screening device provided in this application includes a box body 1 and a screen 3 disposed inside the box body 1. The box body 1 is provided with an inlet 11 and an outlet 12. The concrete aggregate screening device also includes a vibration mechanism, which includes a drive component and a vibrating component 24. The drive component is disposed on the outside of the box body 1, and the vibrating component 24 is disposed on the inside of the box body 1. A window 4 is provided on the side of the box body 1. The drive component is provided with a reciprocating drive rod. The drive rod passes obliquely upward through the window 4 into the box body 1 and connects to the vibrating component 24. When the drive rod reciprocates, it drives the screen 3 to vibrate through the vibrating component 24. Preferably, the top of the box body 1 is provided with an inlet 11, and the bottom of the box body 1 is provided with an outlet 12. The screen 3 is selected according to the aggregate grading requirements. The size of the window 4 is adapted to the drive rod. The connection interface between the window 4 and the drive rod can be sealed with a sealing strip to prevent the material inside the box body 1 from flowing out. Preferably, the drive rod reciprocates at a specific and appropriate frequency, driving the vibrating element 24 to impact the screen 3 at a specific frequency in a horizontal state, preventing fatigue damage and excessive deformation of the screen 3 structure due to excessive drive rod movement frequency or insufficient screening efficiency due to excessive movement frequency.
[0039] In this technical solution, by placing the drive component of the vibration mechanism outside the housing 1, and the vibrating component 24 driving the screen 3 through the drive rod that is obliquely inserted into the housing 1, the linkage design of external drive and internal vibration is realized, avoiding frequent disassembly of the housing 1 due to maintenance of the drive component. The vibrating component 24 directly drives the screen 3 to vibrate, providing the screen 3 with strong and targeted vibration, effectively improving the vibration effect of the screen 3, promoting the aggregate to fully roll and flow on the screen 3, and significantly improving the screening efficiency.
[0040] In a preferred embodiment, such as Figure 2 As shown, the driving component is a cylinder 21, and the driving rod is the piston rod 22 of the cylinder 21. In this technical solution, the cylinder 21 is used as the driving component, and the vibration amplitude and frequency are precisely controlled by the linear reciprocating motion of the piston rod 22, avoiding the influence of vibration parameters due to the wear of the eccentric block in traditional motor drives, and improving the consistency of screening efficiency. In other embodiments, the driving component can also be other suitable structures, such as electric push rods, crank-slider, etc.
[0041] As a preferred embodiment of this application, such as Figure 1As shown, the driving rod has a stop position for driving the vibrating member 24 away from the screen 3, in which the vibrating member 24 closes the window 4. In the stop mode, the driving rod is retracted, and the vibrating member 24 moves along with the driving rod to tightly contact the inner wall of the window 4. In this technical solution, the window 4 is automatically closed in the stop mode without manual operation, which improves the mechanical efficiency of the equipment and effectively prevents foreign matters from entering the box 1 through the window 4 in the stop mode.
[0042] Further, as shown in the drawings, Figures 1-2 The vibrating member 24 is in a flat plate structure, and is movably connected with the driving rod. The vibrating member 24 drives the screen 3 to vibrate in the horizontal state, and closes the window 4 in the vertical state. Preferably, the vibrating member 24 is parallel to the plane of the screen 3 in the horizontal state, and the size of the vibrating member 24 is slightly larger than the opening size of the window 4, and the vibrating member 24 completely covers the window 4 in the vertical state. In this technical solution, the single component is used to simultaneously realize the dual functions of vibration driving and window 4 sealing, to realize the switching of vibration and leakage prevention functions, to simplify the structure and to avoid the dependence on manual operation.
[0043] Further, as shown in the drawings, Figures 1-2 The vibrating member 24 is hinged to the driving rod, and can be switched from the horizontal state to the vertical state under the action of gravity. Preferably, the vibrating member 24 is movably connected with the driving rod through the movable hinge 23, and rotates 90° around the movable hinge 23 to the vertical state under the action of gravity to close the window 4. In addition, when the driving rod is extended in the direction of entering the box 1, the upper end of the vibrating member 24 first contacts the screen 3, and then rotates relative to the driving rod under the pressing action of the screen 3, until it is switched to the horizontal state, and then vibrates the screen 3 according to the output frequency of the driving member. In this technical solution, the vibrating member 24 is hinged to the driving rod, and automatically switches from the horizontal vibration state to the vertical sealing state under the action of gravity, without the need for additional locking mechanism or sensor, which improves the reliability of the stop self-sealing and reduces the failure rate.
[0044] As a preferred embodiment of the present application, as shown in the drawings, Figure 2As shown, the box body 1 is provided with a plurality of support legs 5 in the circumferential direction, and the driving member is installed on the support leg 5. Preferably, the support leg 5 comprises an inclined section and a vertical section, and the inclined section is parallel to the driving rod. Preferably, four rectangular steel pipe support legs 5 are arranged on the outer side of the conical wall of the box body 1 in the circumferential direction. Preferably, the bottom of the support leg 5 is welded with a ground flange. Preferably, after the box body 1 is lifted by the support leg 5, a space for placing a receiving hopper is reserved below the discharge port 12. In the technical solution, the support leg 5 has the functions of supporting the box body 1 and installing the driving member, the driving member is fixed to the outer side wall of the support leg 5, the driving rod of the driving member is obliquely upwardly connected with the vibrating member 24 through the side wall window 4 of the box body 1, and the external driving forms an oblique transmission closed power transmission path. The space between the bottom of the box body 1 and the ground is used for accommodating the receiving equipment, so that the screening and receiving processes are seamlessly connected.
[0045] As a preferred embodiment of the present application, as shown in Figure 2 The feeding port 11 is arranged at the top of the box body 1, and the projection of the vibrating member 24 on the horizontal plane is located outside the projection of the feeding port 11 on the horizontal plane. In the technical solution, the projection of the feeding port 11 is located outside the projection of the vibrating member 24, so that the falling track of the aggregate avoids the active area of the vibrating member 24, prevents the aggregate from directly impacting the vibrating member 24 to cause structural deformation or blockage, and avoids the accumulation of the aggregate in the gap between the vibrating member 24 and the screen 3.
[0046] Further, as shown in Figure 1 、 Figure 2 The box body 1 comprises a cylindrical wall 13 and a conical wall 14 with a gradually reduced inner diameter from top to bottom, the discharge port 12 is arranged at the bottom of the conical wall 14, the screen 3 is connected to the inner side of the cylindrical wall 13, and the window 4 is arranged on the cylindrical wall 13. The aggregate falls from the feeding port 11 to the surface of the screen 3, the qualified particles fall into the area of the conical wall 14 through the screen 3, and finally are discharged from the discharge port 12. Preferably, the box body 1 is integrally formed. In the technical solution, the upper part of the box body 1 provides a stable screening space for the cylindrical wall 13, the lower part of the box body 1 guides the aggregate after screening to be quickly concentrated to the discharge port 12, reduces the residual aggregate, and the window 4 is arranged on the cylindrical wall 13 at the upper part of the box body 1. Since the cylindrical wall 13 is a vertical structure, the aggregate is concentrated and falls to the area of the conical wall 14 under the action of gravity during the screening process, and the height of the window 4 is far away from the main track of the aggregate, so that the material is fundamentally prevented from leaking out through the window 4.
[0047] The parts not described in the utility model can be realized by using or referring to the existing technology.
[0048] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment mainly describes the difference from other embodiments.
[0049] The above merely describes the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.
Claims
1. A concrete aggregate screening apparatus comprising a housing and a screen disposed within the housing, the housing being provided with an inlet and an outlet, characterised in that, The concrete aggregate screening device further comprises a vibrating mechanism, the vibrating mechanism comprising a driving member and a vibrating member, the driving member being arranged outside the box body, the vibrating member being arranged inside the box body, the side of the box body being provided with a window, the driving member being provided with a reciprocating driving rod, the driving rod being obliquely upward through the window into the box body and connected with the vibrating member, the driving rod driving the vibrating member to vibrate the screen when reciprocating.
2. The concrete aggregate screening apparatus of claim 1, wherein, The driving rod has a shutdown position for driving the vibrating member to be separated from the screen, in the shutdown position, the vibrating member closes the window.
3. A concrete aggregate screening apparatus according to claim 2, wherein, The vibrating member is arranged as a flat plate structure, the vibrating member being movably connected with the driving rod, the vibrating member driving the screen to vibrate in a horizontal state, the vibrating member closing the window in a vertical state.
4. A concrete aggregate screening apparatus according to claim 3, wherein, The vibrating member is hinged to the driving rod, the vibrating member being capable of switching from the horizontal state to the vertical state under the action of gravity.
5. Concrete aggregate screening apparatus according to any one of claims 1 to 4, characterised in that, The box body is provided with a plurality of support legs at intervals in the circumferential direction, the driving member being mounted on the support legs.
6. A concrete aggregate screening apparatus according to claim 5, wherein, The driving member is arranged as a pneumatic cylinder, the driving rod being a piston rod of the pneumatic cylinder.
7. The concrete aggregate screening apparatus of claim 1, wherein, The feeding port is arranged at the top of the box body, the projection of the vibrating member on the horizontal plane being located outside the projection of the feeding port on the horizontal plane.
8. A concrete aggregate screening apparatus according to claim 7, characterised in that, The box body comprises a cylindrical wall and a conical wall with a gradually reduced inner diameter from top to bottom, the discharging port being arranged at the bottom of the conical wall, the screen being connected to the inner side of the cylindrical wall, and the window being arranged on the cylindrical wall.