Dust-free magnesium hydroxide screening equipment

Abstract

The utility model discloses a dustless magnesium hydroxide screening equipment, including assembly base, support seat, support arm, support top seat, press -down subassembly, screening shell, screen and flow subassembly, wherein, press -down subassembly installs on support top seat, and screening shell is sleeved in the outside of support seat, and between the inner wall of screening shell and the outer wall of support seat, install a plurality of screen from top to bottom, and a plurality of screen mesh hole decreases gradually from top to bottom, and flow subassembly installs at the top of assembly base, and is connected with screening shell. Therefore, the crushed ore enters the annular gap of screening shell and support seat, and the water tank of flow subassembly is sent to the shell through water pump and pipeline and forms the water medium environment, and the multilayer screen classifies and screens, and the ultrasonic vibrator prevents the blockage, and the material is taken after screening and the sealing cover plate is removed, and the equipment is wrapped by water medium, and the shell is sealed with the cover plate, so that the problem of dust pollution, health hazards and safety risks in the background art during screening is solved.

Description

Technical Field

[0001] This utility model relates to the field of magnesium hydroxide processing technology, and in particular to a dust-free magnesium hydroxide screening device. Background Technology

[0002] Currently, the screening of magnesium hydroxide ore mainly relies on dry screening equipment such as vibrating screens and linear screens. The working principle is to make the material move on the screen surface by high-frequency vibration of the screen body, and to separate particles of different sizes by using the difference in screen mesh size. In order to cooperate with screening, the crushed ore is usually directly exposed to the air for conveying and screening. Although some equipment has a simple dust cover installed above the screen body or a dust removal device installed near the screening area, the overall operation is still mainly open or semi-open, and the material is in direct contact with the outside air. However, existing technologies have significant shortcomings in dust control: the particles formed after crushing magnesium hydroxide ore are relatively fine. During dry screening, the vibration of the screen body causes a large number of fine particles to detach from the main material, forming dust and spreading to the surrounding environment. Even with a dust cover, gaps can easily form at the connection between the cover and the screen body due to vibration, allowing dust to escape from the gaps. The exhaust dust removal device is limited by the suction range and wind speed distribution, making it difficult to capture all suspended dust, especially in dynamic areas such as the material inlet and outlet, where dust leakage is more serious. This escaped dust not only pollutes the workshop air, causing the dust concentration in the operating environment to exceed the standard, but also endangers the respiratory health of the operators. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, the purpose of this utility model is to propose a dust-free magnesium hydroxide screening device, which solves the problem of serious dust pollution during screening by using water medium to encapsulate the material in the screening shell, multi-stage screening mesh for grading and screening, and ultrasonic vibrator to assist screening, combined with a sealing structure to reduce dust emission.

[0005] To achieve the above objectives, this utility model proposes a dust-free magnesium hydroxide screening device, comprising an assembly base, a support base, support arms, a support top seat, a pressing component, a screening shell, screening screens, and a flow component. The support base is fixedly connected to the top of the assembly base, the bottoms of the two support arms are symmetrically fixedly connected to the top of the assembly base, and the support top seat is fixedly connected to the other ends of the two support arms. The pressing component is mounted on the support top seat. The screening shell is sleeved on the outside of the support base. Multiple screening screens are installed from top to bottom between the inner wall of the screening shell and the outer wall of the support base, with the screen apertures decreasing in size from top to bottom. The flow component is mounted on the top of the assembly base and connected to the screening shell.

[0006] This utility model discloses a dust-free magnesium hydroxide screening device. The driving device of the lower pressure component drives the lower pressure head to crush the ore. The protective sleeve reduces dust leakage. The crushed ore enters the annular gap between the screening shell and the support base. The water tank of the flow component delivers water to the shell through a water pump and pipeline to form a water medium environment. The multi-layer screening screen classifies and screens the ore. The ultrasonic vibrator prevents clogging. After screening, the sealing cover is removed to remove the material. This device solves the problems of dust pollution, health hazards and safety risks during screening in the prior art by using water medium encapsulation and sealing the shell and cover.

[0007] In addition, the dust-free magnesium hydroxide screening equipment proposed above according to this utility model may also have the following additional technical features: Specifically, the pressing assembly includes a driving device, a pressing head, and a protective sleeve. The driving device is installed on the top of the support base, and the output end of the driving device passes through the top of the support base and is threadedly connected to the top of the pressing head. The protective sleeve is fitted onto the outer wall of the pressing head.

[0008] Specifically, the flow component includes a water tank, a water pump, a first pipe, and a second pipe. The water tank is installed on the top of the assembly base, the water pump is installed on the water tank, the first pipe is provided between the water tank and the water pump and is connected through the first pipe, and the second pipe is provided between the water tank and the screening shell and is connected through the second pipe.

[0009] Specifically, the top of the support base and the lower pressure head are both conical structures, and the top of the support base and the bottom of the lower pressure head are both flat structures.

[0010] Specifically, multiple ultrasonic vibrators are installed on the inner wall of the screening housing above the multiple screening screens.

[0011] Specifically, sealing covers are symmetrically installed on the outer wall of the screening shell.

[0012] Specifically, both the first and second pipes are equipped with solenoid valves.

[0013] Additional aspects and advantages of this 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

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the dust-free magnesium hydroxide screening equipment of this utility model; Figure 2 This is a schematic diagram of the structure of a screening mesh according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the screening shell according to an embodiment of the present invention; Figure 4 This is one embodiment of the present utility model. Figure 3 A magnified structural diagram of part A in the middle.

[0015] As shown in the figure: 1. Assembly base; 2. Support base; 3. Support arm; 4. Support top base; 5. Pressing assembly; 51. Drive unit; 52. Pressing head; 53. Protective sleeve; 6. Screening shell; 61. Sealing cover; 7. Screening mesh; 8. Flow component; 81. Water tank; 82. Water pump; 83. First pipe; 84. Second pipe; 9. Ultrasonic vibrator. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of the 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 intended to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0017] The dust-free magnesium hydroxide screening equipment of this utility model is described below with reference to the accompanying drawings.

[0018] like Figures 1-4As shown, the dust-free magnesium hydroxide screening equipment of this utility model embodiment may include an assembly base 1, a support base 2, a support arm 3, a support top base 4, a pressing component 5, a screening shell 6, a screening screen 7, and a flow component 8.

[0019] Among them, the support base 2 is fixedly connected to the top of the assembly base 1, the bottom of the two support arms 3 is symmetrically fixedly connected to the top of the assembly base 1, and the support top seat 4 is fixedly connected to the other end of the two support arms 3.

[0020] It should be noted that the support base 2 described in this embodiment is fixedly connected to the pre-set positioning groove on the top of the assembly base 1 by a high-strength bolt assembly. The positioning groove and the boss structure at the bottom of the support base 2 form an interlocking positioning to ensure that the support base 2 does not shift or shake when subjected to the crushing pressure of the pressing component 5. The bottoms of the two support arms 3 are symmetrically fixedly connected to the reinforcing rib plate on the top of the assembly base 1 by welding. The reinforcing rib plate and the assembly base 1 are integrally formed to improve the overall load-bearing strength. The support top seat 4 is fixedly connected to the top of the two support arms 3 by a flange. An elastic buffer gasket is provided at the flange connection to reduce the vibration transmission generated by the pressing component 5 during operation and to prevent the support structure from loosening or fatigue damage due to long-term high-frequency vibration. At the same time, the support arms 3 are made of hollow rectangular steel, which reduces the overall weight of the equipment while ensuring the support strength, making the support structure both stable and lightweight.

[0021] The pressing component 5 is installed on the support top seat 4, and the screening housing 6 is sleeved on the outside of the support seat 2. Multiple screening screens 7 are installed between the inner wall of the screening housing 6 and the outer wall of the support seat 2 from top to bottom, and the screen holes of the multiple screening screens 7 decrease in size from top to bottom.

[0022] Furthermore, sealing covers 61 are symmetrically installed on the outer wall of the screening shell 6.

[0023] It should be noted that the screening shell 6 described in this embodiment is integrally welded from 304 stainless steel. A 10-15cm annular gap is reserved between its inner wall and the outer wall of the support base 2 to accommodate more water and crushed ore. The support base 2 is rigidly fixed to the assembly base 1 with high-strength bolts. Multiple screening meshes 7 are made of wedge-shaped woven wire mesh and are horizontally fixed to the stepped mounting platform on the inner wall of the screening shell 6 using bolt assemblies. The mounting platform and the shell are integrally formed to ensure the load-bearing strength of the screening meshes 7. The screen aperture diameter of the upper screening mesh 7 is 2-3 cm larger than that of the lower mesh. The mesh sizes are 80 mesh, 120 mesh, and 200 mesh, respectively, from top to bottom. After screening, the ore on each layer of screen 7 can be directly cleaned and collected by disassembling the symmetrically installed sealing cover plates 61 on the outer wall of the screening shell 6. The sealing cover plate 61 is equipped with an oil-resistant rubber sealing ring at the contact point with the shell to ensure that water and dust will not leak out during the screening process. At the same time, wear-resistant rubber gaskets are pasted at the connection between the screening mesh 7 and the inner wall of the shell to reduce the noise and wear caused by the impact of ore particles and extend the service life of the equipment.

[0024] The flow component 8 is mounted on top of the assembly base 1 and connected to the screening housing 6.

[0025] Furthermore, multiple ultrasonic vibrators 9 are installed on the inner wall of the screening housing 6 above the multiple screening screens 7.

[0026] It should be noted that, in this embodiment, multiple ultrasonic vibrators 9 are installed on the inner wall of the screening housing 6 above the multiple screening screens 7. These ultrasonic vibrators 9 adopt a fully sealed structure with an IP68 waterproof rating. Their vibration surfaces maintain a vertical distance of 3-5 cm from the plane of the screening screens 7, and are evenly distributed along the edge of the screening screens 7, with 4-6 vibrators per square meter of screening screen 7. The vibrators are connected to the inner wall of the housing via detachable brackets. Shock-absorbing rubber pads are provided at the contact points between the brackets and the housing to reduce vibration transmission loss. The operating frequency of the ultrasonic vibrators 9 can be independently adjusted within a range of 20-40 kHz by an external control system. The vibrator frequency corresponding to the upper screening screen 7 is set to 20-25 kHz to adapt to the dispersion requirements of larger particles, while that of the lower layer is set to 30-40 kHz. To enhance the screening ability of fine particles, an arc-shaped guide plate is set between the vibrator and the screening screen 7 to prevent ore particles from directly impacting the vibrator surface and causing damage. When the equipment is running, the high-frequency vibration generated by the ultrasonic vibrator 9 is transmitted to the screening screen 7 and ore particles through the water medium. This can not only break up particle agglomerates to improve screening efficiency, but also make the screening screen 7 generate micro-resonance to prevent particles from getting stuck in the screen holes and forming blockages, ensuring that each level of the screening screen 7 remains unobstructed.

[0027] As one possible scenario, a fixed sleeve plate can be fixedly fitted onto the outer wall of the support arm 3, and a cylinder can be installed on the outer wall of the fixed sleeve plate. By starting the cylinder, the pusher head can be driven to work, pushing the residue on the support seat 2 into the interior of the screening housing 6.

[0028] Specifically, based on the assembly base 1, the support base 2 is fixed to the boss by fitting with the positioning groove. The support arm 3 and the support top 4 form a stable support structure. The pressing component 5 crushes the magnesium hydroxide ore on the support base 2 on the support top 4. The crushed ore enters the screening shell 6 and the support base 2 within a 10-15cm gap. The annular gap allows the flow component 8 to supply water to the screening shell 6, encapsulating the ore particles. Multiple horizontally installed screening screens 7, with mesh sizes of 80 mesh, 120 mesh, and 200 mesh (from top to bottom), classify and screen the ore. An ultrasonic vibrator 9, with an IP68 waterproof rating and a frequency of 20-40kHz, is distributed along the screen edge and transmits high-frequency vibrations through the water medium, breaking up particle agglomerations and preventing screen blockage. The sealing cover 61 uses an oil-resistant rubber sealing ring to ensure a tight seal. After screening, the sealing cover 61 is removed to collect the ore. This equipment, through the water medium encapsulating the ore particles and the closed structure of the screening shell 6 and sealing cover 61, fundamentally avoids the dust emission problem in traditional dry screening. It solves the problems of dust pollution in the workshop air, harm to operator health, and fire and explosion risks associated with screening in the background technology. Simultaneously, the ultrasonic vibrator 9 does not generate additional dust while improving screening efficiency, further ensuring a dust-free effect.

[0029] In one embodiment of this utility model, such as Figures 1-4 As shown, the pressing assembly 5 includes a driving device 51, a pressing head 52, and a protective sleeve 53. The driving device 51 is installed on the top of the support top seat 4. The output end of the driving device 51 passes through the top of the support top seat 4 and is threadedly connected to the top of the pressing head 52. The protective sleeve 53 is sleeved on the outer wall of the pressing head 52.

[0030] Furthermore, the top of the support base 2 and the lower pressure head 52 are both conical structures, and the top of the support base 2 and the bottom of the lower pressure head 52 are both flat structures.

[0031] It should be noted that the drive device 51 described in this embodiment is installed on the top of the support top seat 4. Its output end passes through the support top seat 4 and is securely connected to the top of the lower pressure head 52 by threads to ensure the stability of power transmission. The protective sleeve 53 is sleeved on the outer wall of the lower pressure head 52 and can rise and fall synchronously with the lower pressure head 52 to form a protective structure surrounding the crushing area. Furthermore, both the top of the support seat 2 and the lower pressure head 52 adopt a conical structure, and the top of both are flat-mouthed. The conical structure can guide the ore to gather towards the center and improve the crushing efficiency. The flat-mouthed structure enhances the uniformity of crushing force through surface contact and avoids ore splashing caused by excessive local force. At the same time, the protective sleeve 53 can reduce the overflow of dust during the crushing process and work in synergy with the sealing design of the screening shell to enhance the overall dust-free effect. The drive device 51 is a hydraulic cylinder.

[0032] In one embodiment of this utility model, such as Figures 1-4 As shown, the flow assembly 8 includes a water tank 81, a water pump 82, a first pipe 83, and a second pipe 84. The water tank 81 is installed on the top of the assembly base 1, the water pump 82 is installed on the water tank 81, the first pipe 83 is provided between the water tank 81 and the water pump 82 and they are connected through the first pipe 83, and the second pipe 84 is provided between the water tank 81 and the screening housing 6 and they are connected through the second pipe 84.

[0033] Furthermore, solenoid valves are installed on both the first pipe 83 and the second pipe 84.

[0034] It should be noted that the water tank 81 described in this embodiment adopts a sealed structure and is installed on the top of the mounting base 1. It has an internal filter layer to purify the circulating water. The water pump 82 is fixedly installed on the top of the water tank 81. Its inlet end is connected to the outlet of the water tank 81 through the first pipe 83, and its outlet end is connected to the inlet of the screening shell 6 through the second pipe 84, forming a complete water circulation path. Furthermore, the first pipe 83 and the second pipe 84 are both made of corrosion-resistant materials. The solenoid valve installed on the pipe can precisely control the on / off state and flow rate of the water through the control system. When the equipment is started, the solenoid valve opens, and the water pump 82 transports the water in the water tank 81 to the screening shell 6 through the pipe, so that a stable water medium environment is formed inside the shell. During the screening process, the amount of water replenishment can be controlled by adjusting the solenoid valve to maintain a stable water level. After screening, the solenoid valve closes to facilitate drainage of the shell. At the same time, the connection parts between the pipe and the water tank 81 and the screening shell 6 are all equipped with sealing joints to prevent media loss and dust overflow caused by water leakage, thereby improving the reliability of the water circulation system and the overall dust-free effect of the equipment.

[0035] It should be understood that filters are installed at the ends of both the first pipe 83 and the second pipe 84.

[0036] In summary, the dust-free magnesium hydroxide screening equipment of this utility model embodiment uses a driving device 51 of the lower pressing component 5 to drive the lower pressing head 52 to crush the ore, a protective sleeve 53 to reduce dust overflow, and the crushed ore to enter the annular gap between the screening shell 6 and the support seat 2. The water tank 81 of the flow component 8 delivers water to the shell through the water pump 82 and pipeline to form a water medium environment. The multi-layer screening mesh 7 performs graded screening, the ultrasonic vibrator 9 prevents clogging, and the sealing cover 61 is removed after screening to retrieve the material. This equipment solves the problems of dust pollution, health hazards, and safety risks during screening in the prior art by using water medium encapsulation and sealing the shell and cover.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dust-free magnesium hydroxide screening device, characterized in that, It includes an assembly base (1), a support base (2), a support arm (3), a support top seat (4), a pressing assembly (5), a screening housing (6), a screening screen (7), and a flow assembly (8), wherein, The support base (2) is fixedly connected to the top of the assembly base (1), the bottoms of the two support arms (3) are symmetrically fixedly connected to the top of the assembly base (1), and the support top seat (4) is fixedly connected to the other end of the two support arms (3). The pressing component (5) is mounted on the support top seat (4); The screening housing (6) is sleeved on the outside of the support base (2). Multiple screening screens (7) are installed between the inner wall of the screening housing (6) and the outer wall of the support base (2) from top to bottom, and the screen holes of the multiple screening screens (7) decrease in size from top to bottom. The flow component (8) is mounted on top of the assembly base (1) and connected to the screening housing (6).

2. The dust-free magnesium hydroxide screening equipment according to claim 1, characterized in that, The pressing assembly (5) includes a driving device (51), a pressing head (52), and a protective sleeve (53), wherein, The drive device (51) is installed on the top of the support top seat (4), and the output end of the drive device (51) passes through the top of the support top seat (4) and is threadedly connected to the top of the pressing head (52). The protective sleeve (53) is fitted onto the outer wall of the lower pressure head (52).

3. The dust-free magnesium hydroxide screening equipment according to claim 1, characterized in that, The flow assembly (8) includes a water tank (81), a water pump (82), a first pipe (83), and a second pipe (84), wherein, The water tank (81) is installed on the top of the assembly base (1), the water pump (82) is installed on the water tank (81), the first pipe (83) is provided between the water tank (81) and the water pump (82) and is connected through the first pipe (83), the second pipe (84) is provided between the water tank (81) and the screening shell (6) and is connected through the second pipe (84).

4. The dust-free magnesium hydroxide screening equipment according to claim 2, characterized in that, The top of the support base (2) and the lower pressure head (52) are both conical structures, and the top of the support base (2) and the bottom of the lower pressure head (52) are both flat structures.

5. The dust-free magnesium hydroxide screening equipment according to claim 1, characterized in that, Multiple ultrasonic vibrators (9) are installed on the inner wall of the screening housing (6) above the multiple screening screens (7).

6. The dust-free magnesium hydroxide screening equipment according to claim 1, characterized in that, The outer wall of the screening shell (6) is symmetrically fitted with sealing cover plates (61).

7. The dust-free magnesium hydroxide screening equipment according to claim 3, characterized in that, Solenoid valves are installed on both the first pipe (83) and the second pipe (84).

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