A zinc concentrate screening device

Abstract

The utility model discloses a zinc concentrate divides screening device relates to the manufacturing technical field of zinc concentrate, aims at can make between the sieve box and support have transverse buffer, reduces the cost and frequency of device maintenance. The device includes frame body, sieve box, first support piece, second support piece and shock absorber, and the first support piece has four and installs in the four corners of sieve box, four second support pieces are installed on the frame body, and the frame body still is provided with fixing piece, and the shock absorber is installed between second support piece and fixing piece, and the shock absorber is parallel with mounting pole. The shock absorber provides effective transverse damping effect when the device works, avoids the high -strength vibration of sieve box to the frame body and causes excessive damage, makes between sieve box and frame body have the buffer, reduces the cost and frequency of device maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a zinc concentrate screening device. Background Technology

[0002] In the zinc mining and processing industry, zinc concentrate screening currently relies mainly on traditional mechanical devices such as rotary screens. These devices, through long-term practice, have become standard configurations in the screening process, meeting basic screening needs to a certain extent and are widely used in various zinc processing enterprises.

[0003] Existing zinc concentrate screening equipment has significant design flaws, a key one being the general lack of lateral vibration damping devices. During screening, the vibrating motor operates continuously, generating forces in multiple directions. The screen box vibrates in this way, generating substantial kinetic energy to complete the screening. However, due to the lack of lateral vibration damping, the strong lateral forces generated by the vibrating motor acting on the screen box directly cause the entire screening device to vibrate. This leads to loose screws or metal fatigue, significantly shortening the lifespan of the screening equipment, increasing maintenance costs and frequency for enterprises, and also affecting the stability of the overall device structure.

[0004] Therefore, it is essential to develop a new zinc concentrate screening device with a transverse damping device. Utility Model Content

[0005] To address the above shortcomings, this utility model provides a zinc concentrate screening device with a lateral damping device, which provides lateral buffering between the screen box and the support, reducing the cost and frequency of device maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A zinc concentrate screening device includes a frame and a screen box, and also includes a first support member, a second support member and a shock absorber. The first support member has four parts and is installed at the four corners of the screen box.

[0008] The frame includes a first bracket, a second bracket, and mounting rods. There are two mounting rods, which are fixed to the first and second brackets. Four second support members are installed on the two mounting rods in pairs.

[0009] The second support member has four members that are set in pairs and are limited and slidably mounted on two mounting rods. The screen box is installed on the four second support members in cooperation with the four first support members.

[0010] The mounting rod is also equipped with a fixing component. The second support component also includes a third mounting plate, which is fixed to the support plate on the side near the second bracket. The fixing component has two fixing components set on the side of the slide groove near the second bracket. The shock absorber is installed between the second support component and the fixing component, and the shock absorber is parallel to the mounting rod.

[0011] Preferably, the screen box includes a screen, a fence, and support rods. The screen is fixed to the lower part of the fence, and there are two support rods installed horizontally on the fence. Four first support members are rotatably installed at both ends of the two support rods in a corresponding manner.

[0012] Preferably, the first support is higher than the second support, the fence has an opening at one end of the second support, and the screen has a guide plate on one side of the fence opening, the guide plate extending beyond the second support.

[0013] Preferably, a spring is further provided between the first support member and the second support member. The first support member includes a connecting ring, a first mounting plate, and a first sleeve. The connecting ring is fixed to the upper part of the first mounting plate and sleeved on both ends of the support rod. The first sleeve is fixed to the lower part of the first mounting plate. The second support member includes a second sleeve and a second mounting plate. The second sleeve is fixed to the upper part of the second mounting plate. The second mounting plate is mounted on the mounting rod. The inner diameter of the second sleeve is larger than the outer diameter of the first sleeve. The second sleeve is sleeved on the first sleeve. The spring is provided between the first sleeve and the second sleeve.

[0014] Preferably, the mounting rod is provided with two sliding grooves. The second support member also includes a support plate, a third mounting plate, and a slider. The support plate is fixed to the lower part of the second mounting plate to keep the second mounting plate in a horizontal state. The slider is fixed to the lower part of the support plate. The two second support members are slidably disposed in the sliding grooves via the slider. The third mounting plate is fixed to the side of the support plate near the second bracket. Two fixing members are disposed on the side of the sliding groove near the second bracket. The shock absorber is installed between the third mounting plate and the fixing members.

[0015] Preferably, it also includes an eccentric vibration component, which includes an eccentric swing arm, a mounting frame, a coupling, and a motor. The mounting frame is fixed to the upper part of the fence. The eccentric swing arm is rotatably mounted on the fence. One end of the eccentric swing arm is provided with a transmission wheel. The motor is fixedly mounted on the mounting frame. The coupling is rotatably mounted on the mounting frame and one end is fixedly connected to the motor shaft. The other end of the coupling is provided with a transmission wheel. A transmission belt is provided on the transmission wheel of the eccentric swing arm and the transmission wheel of the coupling.

[0016] Preferably, the eccentric vibration component also includes a dust cover, which is mounted on a mounting bracket and houses the motor inside it.

[0017] Preferably, the zinc concentrate screening device according to claim 1 is characterized in that: it further includes a collecting funnel, which is fixedly installed on the lower part of two mounting rods, and the upper opening of the collecting funnel is located on the lower side of the screen.

[0018] Preferably, the eccentric vibration component also includes a dust cover, which is mounted on a mounting bracket and houses the motor inside it.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This device includes a frame and a screen box, as well as first support members, second support members, and shock absorbers. There are four first support members installed at the four corners of the screen box. The frame includes a first bracket, a second bracket, and mounting rods. There are two mounting rods fixed to the first and second brackets. The four second support members are installed on the two mounting rods in pairs. The four second support members are also arranged in pairs on the two mounting rods for limiting and sliding. The screen box is installed on the four second support members through the cooperation of the four first support members. The mounting rods are also equipped with fixing members. The second support members also include a third mounting plate, which is fixed to the support plate near the second bracket. Two fixing members are provided on the sliding groove near the second bracket. The shock absorbers are installed between the second support members and the fixing members, and are parallel to the mounting rods. The shock absorbers provide effective lateral vibration reduction during device operation, avoiding excessive damage to the frame due to the high-intensity vibration of the screen box, thus providing lateral buffering between the screen box and the frame, reducing the cost and frequency of device maintenance. The shock absorber is set parallel to the mounting rod, which allows the shock absorber to absorb and mitigate vibration to the maximum extent, reduce the impact of screen box vibration on other components of the device, and extend the service life of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the frame of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the screen part in this utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of the support component in this utility model.

[0025] Reference numerals: 1. Frame; 11. First support; 12. Second support; 13. Mounting rod; 131. Slide groove; 132. Fixing component; 2. Screen; 21. Guide plate; 3. Fence; 4. Support rod; 5. First support component; 51. Connecting ring; 52. First mounting plate; 53. First sleeve; 6. Second support component; 61. Second sleeve; 62. Second mounting plate; 63. Third mounting plate; 64. Slider; 65. Support plate; 7. Eccentric vibration component; 71. Dust cover; 72. Motor; 73. Coupling; 74. Eccentric swing arm; 75. Transmission wheel; 76. Transmission belt; 77. Mounting frame; 8. Shock absorber; 9. Collection funnel; 10. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] This device provides a zinc concentrate screening apparatus, designed to solve the problem that existing screens 2 cannot effectively buffer the falling ore, resulting in excessive impact force and damage to the screens 2. Figures 1-4 As shown, the device includes a frame 1, a screen 2, a fence 3, a support rod 4, a first support member 5, a second support member 6, and a spring 10. The components work together to improve screening efficiency and enhance the stability of the device.

[0030] The screen 2 is fixedly installed at the lower part of the enclosure 3. The enclosure 3 protects and supports the screen 2, preventing material from splashing out and ensuring a smooth screening process. The design of the enclosure 3 allows the ore to fall into the area of ​​the screen 2 in a concentrated manner, improving the effectiveness of screening and reducing material waste caused by ore splashing.

[0031] There are two support rods 4, which are installed horizontally on the fence 3 to make the force on the screen 2 more even and avoid damage caused by excessive local force. The setting of the horizontal support rods 4 enhances the stability of the screen 2, enabling the screen 2 to maintain balance during the screening process, reducing deformation caused by long-term vibration, improving screening efficiency and service life of the screen 2.

[0032] There are four first support members 5, which are rotatably installed at both ends of the two support rods 4 in a corresponding manner. They can provide a certain angle adjustment when the screen 2 is under force, so that the screen 2 has a moderate buffering capacity during operation, thereby reducing the risk of damage caused by the direct impact of the ore on the screen 2.

[0033] There are four second support members 6, which are set on the frame 1 and correspond one-to-one with the positions of the first support members 5. The first support members 5 are installed on the upper part of the second support members 6 to form a stable support structure, so that the screen 2 is evenly stressed during operation, avoiding the loosening or misalignment of the support due to long-term vibration, and improving the durability and operational stability of the screening device.

[0034] Spring 10 is installed between the first support 5 and the second support 6, enabling the screen 2 to generate elastic buffer when impacted by ore, reducing instantaneous impact force and improving the impact resistance of the screen 2. The function of spring 10 is not only to effectively reduce the impact force on the frame 1 during screening and reduce the overall vibration of the equipment, but also to extend the service life of the screen 2, improve the stability of the screening device, and enable it to maintain good screening performance under long-term, high-frequency operation.

[0035] In a preferred embodiment, the zinc concentrate screening device further includes an eccentric vibrating component 7, which is designed to provide vibration of the screen 2 to effectively propel the ore through the screen. The eccentric vibrating component 7 includes an eccentric swing arm 74, a mounting frame 77, a coupling 73, and a motor 72. These components work together to ensure that the screen 2 vibrates uniformly, thereby improving screening efficiency.

[0036] Mounting bracket 77 is fixed to the upper part of fence 3, providing support and fixation to ensure the stability of eccentric vibrating component 7. Eccentric swing arm 74 is laterally rotatably mounted on fence 3. The design of eccentric swing arm 74 generates periodic irregular vibrations, which effectively help the ore pass through screen 2, improving the efficiency of ore screening. A transmission wheel 75 is provided at one end of eccentric swing arm 74. The transmission wheel 75 helps transmit motion from motor 72 to eccentric swing arm 74, realizing the vibration movement of eccentric swing arm 74.

[0037] The motor 72 is fixedly mounted on the mounting bracket 77, serving as the power source for the eccentric vibration component 7 and providing the necessary rotational power. The coupling 73 is rotatably mounted on the mounting bracket 77, with one end fixedly connected to the shaft of the motor 72, transmitting the rotational motion of the motor 72 to the coupling 73. The other end of the coupling 73 is equipped with a transmission wheel 75, which is connected to the transmission wheel 75 on the eccentric rocker arm 74 via a transmission belt 76. This ensures that the rotational force generated by the motor 72 is transmitted to the eccentric rocker arm 74 through the coupling 73 and the transmission belt 76, achieving the oscillation.

[0038] This design ensures that the screen 2 generates the necessary vibration during the screening process, helping the ore to be separated through the screen 2 and improving screening efficiency. Through reasonable control of vibration amplitude and frequency, the eccentric vibrating component 7 can make the screen 2 vibrate more evenly during the process, avoid material accumulation, and promote the smooth flow of materials.

[0039] In a preferred embodiment, the frame 1 of this zinc concentrate screening device includes a first support 11, a second support 12, and mounting rods 13. There are two mounting rods 13, which are fixed to the first support 11 and the second support 12 by welding. Four second support members 6 are installed on the two mounting rods 13 in pairs to ensure that the support members are positioned correctly and subjected to uniform force, thereby enhancing the stability of the screen 2 during the screening process.

[0040] The first support member 5 includes a connecting ring 51, a first mounting plate 52, and a first sleeve 53. The connecting ring 51 is fixed to the upper part of the first mounting plate 52 and sleeved on both ends of the support rod 4, serving to fix the support rod 4 and provide overall stability. The first sleeve 53 is fixed to the lower part of the first mounting plate 52 and serves as a key structural part that cooperates with the second support member 6, ensuring relative sliding and buffering functions between the two.

[0041] The second support member 6 includes a second sleeve 61 and a second mounting plate 62. The second sleeve 61 is fixed to the upper part of the second mounting plate 62. The inner diameter of the second sleeve 61 is larger than the outer diameter of the first sleeve 53, ensuring that the two can be interlocked. A spring 10 is disposed between the first sleeve 53 and the second sleeve 61 as a buffer component, which can effectively absorb the impact force generated by the impact of the ore. Its elastic characteristics allow the screen 2 to generate a moderate displacement when impacted by the ore, reducing the direct impact on the screen 2 and the support member, thereby improving the impact resistance of the screen 2 and extending its service life. Through this design, the second sleeve 61 not only plays a supporting role, but also forms a relative displacement with the first sleeve 53 during vibration, thereby realizing the buffering function of the screen 2, reducing the vibration force brought by the ore impacting the screen 2, reducing the wear of the screen 2, and ensuring the smooth progress of the screening process.

[0042] In a preferred embodiment, the first support 11 is higher than the second support 12. The enclosure 3 has an opening at one end of the second support 12, and the screen 2 has a guide plate 21 on one side of the opening in the enclosure 3, extending beyond the second support 12. The design of the first support 11 being higher than the second support 12 ensures the stability of the device and provides an inclination angle for the screen 2. Because the first support 11 is higher than the second support 12, this structural configuration causes the screen 2 to be tilted when the ore falls onto it, thus enabling more effective use of gravity to aid in ore screening during the screening process. The tilted screen 2 structure improves the flowability of the ore, promoting the passage of smaller ore particles through the screen 2, while larger ore particles are quickly guided to one side of the screen 2 due to gravity. The enclosure 3 has an opening at one end of the second support 12, allowing large ore particles that do not pass through the screen 2 to fall smoothly from one side. In this way, larger ore particles no longer remain on the screen 2 during screening, effectively distinguishing them from the screened ore powder. This design can quickly remove large ore particles during the screening process, preventing them from mixing with the small ore particles that have already been screened, thus ensuring the accuracy and efficiency of screening.

[0043] In a preferred embodiment, the zinc concentrate screening device further includes a collecting funnel 9, which is fixedly installed at the lower part of the two mounting rods 13. The collecting funnel 9 further enhances material management and separation efficiency during the screening process. The upper opening of the collecting funnel 9 is located below the screen 2, ensuring that fine ore falling from the screen 2 during the screening process can quickly flow into the funnel for collection and be concentrated from the opening at the bottom of the funnel.

[0044] In a preferred embodiment, the mounting rod 13 is provided with two sliding grooves 131. The second support member 6 includes a support plate 65 and a slider 64. The support plate 65 is fixedly connected to the lower part of the second mounting plate 62 to ensure that the second mounting plate 62 always remains horizontal, thus maintaining the stability of the device during operation. Through this structural design, the second mounting plate 62 can withstand a uniform load throughout the screening process. The slider 64 is fixed to the lower part of the support plate 65. The function of the slider 64 is to allow the second support member 6 to slide smoothly within the sliding grooves 131 when the eccentric vibration component 7 is working, further buffering the device and preventing the device from becoming loose or the screws from coming undone due to prolonged vibration.

[0045] In addition, the device includes a shock absorber 8, and a fixing member 132 is provided on the mounting rod 13. The second support member 6 also includes a third mounting plate 63, which is fixed to the support plate 65 near the second bracket 12. Two fixing members 132 are provided on the slide groove 131 near the second bracket 12. The shock absorber 8 is installed between the third mounting plate 63 and the fixing member 132, and is parallel to the mounting rod 13. This arrangement further improves the stability and service life of the device. The fixing member 132 ensures that the shock absorber 8 can be stably installed on the device, and the shock absorber 8 provides effective vibration damping during device operation. The shock absorber 8, installed between the third mounting plate 63 and the fixing member 132, avoids excessive damage to the device due to equipment vibration or ore impact. The parallel arrangement of the shock absorber 8 with the mounting rod 13 allows it to absorb and mitigate vibration to the maximum extent, reducing the impact of vibration on other components of the device and extending its service life.

[0046] In a preferred embodiment, the eccentric vibration component 7 further includes a dust cover 71, which is mounted on the mounting bracket 77 and houses the motor 72 inside. The dust cover 71 is designed to provide effective protection for the motor 72 and other components in the eccentric vibration component 7 that are susceptible to dust, minerals, or other external factors, thereby extending the service life of the equipment and ensuring stable operation of the device in the working environment.

[0047] The design principle of this zinc concentrate screening device aims to effectively solve problems in the ore screening process, such as screen damage and low screening efficiency, through multiple innovative structures. Through the synergistic effect of multiple components, this device not only improves screening efficiency but also enhances the stability and durability of the equipment.

[0048] First, the screen 2 is fixed at the bottom by the fence 3, which supports and protects the screen 2, preventing ore spillage and ensuring a smooth screening process. The support rod 4 is installed horizontally on the fence 3 to ensure even force distribution on the screen 2, enhancing its stability and preventing damage caused by excessive localized stress. Based on this, the first support member 5 and the second support member 6 form a support structure, providing necessary angle adjustments to give the screen 2 appropriate buffering capacity, thereby reducing the impact of ore on the screen 2.

[0049] A spring 10 is installed between the first support 5 and the second support 6 to provide elastic cushioning, enabling the screen 2 to undergo appropriate displacement when impacted by the ore, thereby reducing the impact force. This cushioning mechanism effectively extends the service life of the screen 2, improves its impact resistance, reduces the impact of equipment vibration on the frame 1, and enhances the stability of the screening device.

[0050] In addition, the device is equipped with an eccentric vibration component 7, which, driven by an eccentric swing arm 74 driven by a motor 72, vibrates the screen 2, propelling the ore through the screen 2 more efficiently. The design of the eccentric vibration component 7 causes the screen 2 to vibrate periodically during the screening process, ensuring that the ore passes through the screen 2 evenly and improving screening efficiency. The eccentric swing arm 74 is connected to the motor 72 via a coupling 73 and a transmission belt 76, transmitting power and realizing the vibration movement of the eccentric swing arm 74, thereby driving the overall vibration of the screen 2.

[0051] The frame 1 of the device includes a first support 11, a second support 12, and a mounting rod 13. The design of the mounting rod 13 ensures the position and uniform force distribution of the support members, further enhancing the stability of the screen 2. The second support member 6, through the design of the sliding groove 131 and the slider 64, enables the support member to slide smoothly during vibration, effectively alleviating the problem of device loosening caused by vibration and providing a buffer function.

[0052] To further enhance equipment stability, the device is also equipped with a shock absorber 8, installed between the third mounting plate 63 and the fixing component 132. The shock absorber effectively absorbs vibrations, preventing damage to the equipment due to excessive vibration, thereby extending the equipment's service life. Simultaneously, the dust cover 71 effectively protects the motor 72 within the eccentric vibration component 7, preventing external dust and ore from entering the motor 72 component, thus ensuring stable operation of the equipment in complex working environments.

[0053] In summary, through a reasonable structural layout and precise mechanical coordination, this device successfully solves problems such as screen damage, low screening efficiency, and poor equipment stability, providing a high-efficiency, durable, and stable zinc concentrate screening solution.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A zinc concentrate screening device, comprising a frame (1) and a screen box, characterized in that: It also includes a first support member (5), a second support member (6) and a shock absorber (8), wherein there are four first support members (5) and they are installed at the four corners of the sieve box; The frame (1) includes a first bracket (11), a second bracket (12) and mounting rods (13). There are two mounting rods (13) and they are fixed to the first bracket (11) and the second bracket (12). Four second support members (6) are installed on the two mounting rods (13) in pairs. The second support member (6) has four members that are slidably mounted on the two mounting rods (13) in pairs. The screen box is mounted on the four second support members (6) in cooperation with the four first support members (5). The mounting rod (13) is also provided with a fixing member (132) and a sliding groove (131). The second support member (6) also includes a third mounting plate (63) and a support plate (65). The third mounting plate (63) is fixed to the support plate (65) on the side near the second bracket (12). There are two fixing members (132). The two fixing members (132) are provided on the sliding groove (131) on the side near the second bracket (12). The shock absorber (8) is installed between the second support member (6) and the fixing member (132). The shock absorber (8) is parallel to the mounting rod (13).

2. The zinc concentrate screening device according to claim 1, characterized in that: The sieve box includes a sieve (2), a fence (3) and support rods (4). The sieve (2) is fixed to the lower part of the fence (3). There are two support rods (4) and they are installed horizontally on the fence (3). The four first support members (5) are rotatably installed at both ends of the two support rods (4) in a one-to-one correspondence.

3. A zinc concentrate screening device according to claim 2, characterized in that: The first support (11) is higher than the second support (12), the fence (3) has an opening at one end of the second support (12), and the screen (2) has a guide plate (21) on one side of the opening of the fence (3), the guide plate (21) extends beyond the second support (12).

4. A zinc concentrate screening device according to claim 2, characterized in that: A spring (10) is also provided between the first support member (5) and the second support member (6). The first support member (5) includes a connecting ring (51), a first mounting plate (52) and a first sleeve (53). The connecting ring (51) is fixed to the upper part of the first mounting plate (52) and sleeved at both ends of the support rod (4). The first sleeve (53) is fixed to the lower part of the first mounting plate (52). The second support member (6) includes a second sleeve (61) and a second mounting plate (62). The second sleeve (61) is fixed to the upper part of the second mounting plate (62). The second mounting plate (62) is mounted on the mounting rod (13). The inner diameter of the second sleeve (61) is larger than the outer diameter of the first sleeve (53). The second sleeve (61) is sleeved on the first sleeve (53). The spring (10) is provided between the first sleeve (53) and the second sleeve (61).

5. A zinc concentrate screening device according to claim 4, characterized in that: The mounting rod (13) is provided with a sliding groove (131), and there are two sliding grooves (131). The second support member (6) also includes a support plate (65), a third mounting plate (63), and a slider (64). The support plate (65) is fixed to the lower part of the second mounting plate (62) so that the second mounting plate (62) is in a horizontal state. The slider (64) is fixed to the lower part of the support plate (65). The two second support members (6) are slidably disposed in the sliding groove (131) through the slider (64). The third mounting plate (63) is fixed to the support plate (65) on the side near the second bracket (12). There are two fixing members (132). The fixing members (132) are disposed on the side of the sliding groove (131) near the second bracket (12). The shock absorber (8) is installed between the third mounting plate (63) and the fixing members (132).

6. A zinc concentrate screening device according to claim 2, characterized in that: It also includes an eccentric vibration component (7), which includes an eccentric swing rod (74), a mounting frame (77), a coupling (73), and a motor (72). The mounting frame (77) is fixed to the upper part of the fence (3). The eccentric swing rod (74) is rotatably mounted on the fence (3). One end of the eccentric swing rod (74) is provided with a transmission wheel (75). The motor (72) is fixedly mounted on the mounting frame (77). The coupling (73) is rotatably mounted on the mounting frame (77) and one end is fixedly connected to the shaft of the motor (72). The other end of the coupling (73) is provided with a transmission wheel (75). A transmission belt (76) is provided on the transmission wheel (75) of the eccentric swing rod (74) and the transmission wheel (75) of the coupling (73).

7. A zinc concentrate screening device according to claim 6, characterized in that: The eccentric vibration component (7) also includes a dust cover (71), which is mounted on the mounting bracket (77) and encloses the motor (72) therein.

8. A zinc concentrate screening device according to claim 2, characterized in that: According to claim 2, a zinc concentrate screening device is characterized in that: it further includes a collecting funnel (9), which is fixedly installed on the lower part of the two mounting rods (13), and the upper opening of the collecting funnel (9) is located on the lower side of the screen (2).

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