Feeding adjustable vibrating screen

Abstract

The utility model relates to the technical field of vibrating screen feeding control, in particular to a feeding-adjustable vibrating screen which comprises a box body, a screen mesh is installed in the box body, a vibrating source is arranged on the side wall of the box body, a plurality of damping springs are arranged on the bottom face of the box body, a feeding pipe is arranged at one end of the top face of the box body, and the feeding pipe is connected with a feeding chute. The feeding chute is inserted into the box body; a gap is formed between the feeding chute and the screen; a baffle plate is arranged on the side wall of one side of the feeding chute in a matched manner; the striker plate is connected with a lifting mechanism; the lifting mechanism is arranged on the feeding pipe; an extension plate is arranged at one end of the screen; and the extension plate is arranged below the feeding chute. Compared with the prior art, the feeding-adjustable vibrating screen has the advantages that the material blocking plate with the height capable of being adjusted through the lifting mechanism is arranged on one side of the feeding chute, the material passing amount between the feeding chute and the screen can be controlled, the situation that the screening precision is affected due to the fact that a material layer is too thick is avoided, the material distribution uniformity is improved, and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen feeding control technology, and in particular to a vibrating screen with adjustable feed. Background Technology

[0002] A vibrating screen operates by utilizing the reciprocating rotary vibration generated by a vibrator. A vibrating screen located under a blast furnace trough generally includes an exciter: its function is to generate excitation force, and it can be classified as mechanical, electromagnetic, hydraulic, or pneumatic. Modern vibrating screens mostly use inertial exciters, while electric vibrating screens and electromagnetic vibrating feeders use electromagnetic exciters. It also includes the working body, that is, the working part that performs periodic motion, such as the screen box of the vibrating screen and the conveyor trough of the electric vibrating feeder.

[0003] For example, patent CN218190932U discloses an intelligent vibrating screen with uniform feeding, including a vibrating screen base and a vibrating screen frame. Support seats are fixedly installed at the four corners of the top of the vibrating screen base. Vibrating springs are fixedly installed at the top of the four support seats. Assembly frames are fixedly installed at the top of the four vibrating springs. A vibrating screen frame is fixedly installed between the four assembly frames. A vibrating screen mesh is fixedly installed in the middle of the vibrating screen frame. A material storage box is fixedly installed at the top of the vibrating screen frame. A feeding channel is fixedly connected to the middle of the bottom of the material storage box.

[0004] In the above scheme, when the material falls onto the screen, there is less material distributed between the two diversion channels, while there is more material at the diversion channel, resulting in uneven distribution of material on the screen and affecting screening efficiency. Utility Model Content

[0005] To address the problem that when material falls onto the screen, there is less material distributed between the two diversion channels while more material falls into the diversion channel, resulting in uneven material distribution on the screen and affecting screening efficiency, this utility model provides an adjustable feed vibrating screen.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] An adjustable feed vibrating screen includes a housing, a screen installed inside the housing, a vibration source mounted on the side wall of the housing, several damping springs mounted on the bottom surface of the housing, a feed pipe connected to a feed chute at one end of the top surface of the housing, the feed chute being inserted into the housing, a gap being provided between the feed chute and the screen, a baffle plate being fitted on one side wall of the feed chute, a lifting mechanism being connected to the baffle plate, the lifting mechanism being mounted on the feed pipe, an extension plate being mounted at one end of the screen, and the extension plate being positioned below the feed chute. This adjustable-feed vibrating screen features a baffle plate on one side of the feed chute, whose height can be adjusted via a lifting mechanism. This controls the material flow between the feed chute and the screen, preventing excessively thick material layers from affecting screening accuracy, improving material distribution uniformity, and increasing screening efficiency. The combined structure of the baffle plate and the feed chute reduces direct impact of material on the screen and equipment sidewalls. The design of the feed chute being inserted into the housing effectively reduces dust spillage and enhances environmental performance. An extension plate at one end of the screen is located below the feed chute. Material accumulates on the extension plate and is then evenly distributed to the screen surface by the baffle plate, further optimizing material distribution uniformity. Furthermore, the shock-absorbing springs on the bottom of the housing reduce the impact of vibration on the equipment foundation, extending the equipment's service life. The overall structure offers significant benefits in material control, wear reduction, pollution reduction, and improved stability.

[0008] Preferably, a flange is provided at the lower end of the feed pipe; a baffle plate is provided between one side of flange one and the outer wall of the feed pipe to form a gap one; a flange is provided at the upper end of the feed chute; a baffle plate is provided between one side of flange two and the outer wall of the feed chute to form a gap two. The flange at the lower end of the feed pipe and the flange at the upper end of the feed chute, with both forming gap one and gap two respectively with the baffle plate, allow the baffle plate to slide along the gaps under the drive of the lifting mechanism, ensuring smooth adjustment of the baffle plate's lifting and lowering. The gap structure reduces material leakage while ensuring effective material control by the baffle plate.

[0009] Preferably, the lifting mechanism includes a rack fixedly mounted on the baffle plate; the rack meshes with a gear; the gear is keyed to a drive shaft; the drive shaft is mounted on the side wall of the feed pipe via a bearing seat. This mechanism can precisely convert the rotational motion of the drive shaft into the linear lifting motion of the baffle plate, resulting in high transmission efficiency and strong stability. The keyed connection ensures synchronous rotation of the drive shaft and gear, preventing slippage and improving the accuracy of material control. The bearing seat stably mounts the drive shaft on the side wall of the feed pipe, reducing shaking and wear during transmission, making the baffle plate lifting operation smoother and more stable. Furthermore, this mechanical transmission structure requires no complex electrical control system, making maintenance simple and cost-effective. It enables precise manual or mechanical adjustment of the baffle plate height, meeting the material feed control requirements under different working conditions and enhancing the practicality and operability of the equipment.

[0010] Preferably, a drive assembly is connected to one end of the drive shaft.

[0011] Preferably, the drive assembly includes a handwheel that is keyed to the drive shaft. The height of the baffle plate can be quickly changed by rotating the handwheel, offering high flexibility and timely response.

[0012] Preferably, a locking assembly is connected to one side of the drive shaft; the locking assembly includes a limiting gear disposed on the outer wall of one side of the drive shaft and a locking tooth disposed in cooperation with the limiting gear; the locking tooth is rotatably disposed on a fixed plate; the fixed plate is fixedly disposed on the side wall of the feed pipe; a torsion spring is installed between the locking tooth and the fixed plate. The locking assembly on one side of the drive shaft, through the cooperation of the limiting gear and the locking tooth, allows the locking tooth to engage with the groove of the limiting gear after the baffle is adjusted to the target height, forming a mechanical locking structure. This effectively prevents the drive shaft from rotating due to material impact or vibration, ensuring the baffle position is fixed and maintaining a stable feed rate. The design of the locking tooth rotating on the fixed plate makes locking and unlocking operations simple and quick; simply rotating the locking tooth switches between locked and released states. This locking assembly has a compact structure and high reliability. The torsion spring ensures the engagement of the locking tooth and the limiting gear, providing continuous locking force without additional power. It meets the requirements of material control for the stability of the baffle position and can adapt to the complex working conditions of the vibrating screen, reducing deviations in material control accuracy caused by equipment vibration and improving the overall reliability and safety of the equipment.

[0013] Preferably, the locking teeth are connected to a connecting rod; the connecting rod and the locking teeth are set at an angle. The locking teeth, connected by the connecting rod and set at an angle to it, amplify the operating lever arm through the lever effect of the connecting rod, allowing the operator to easily rotate the locking teeth to complete the locking or unlocking action with only a small external force, reducing the intensity of manual operation. The angled structure prevents the movement trajectory of the connecting rod and the locking teeth from coinciding, ensuring that the connecting rod will not interfere with surrounding components when the locking teeth rotate, improving the smoothness of operation. At the same time, the connecting rod provides a more flexible operating fulcrum for the locking teeth, allowing the installation angle and length of the connecting rod to be adjusted according to the site space layout, enhancing the environmental adaptability of the locking assembly.

[0014] Preferably, a wear-resistant sealing layer is provided on the side of the baffle plate that contacts the outer wall of the feed chute. This wear-resistant sealing layer, achieved through wear-resistant materials (such as ceramics or rubber), effectively resists the impact and friction of falling materials, significantly extending the service life of the baffle plate and reducing the decrease in material control accuracy caused by wear. Simultaneously, it prevents dust and fine particles from overflowing, improving the equipment's sealing performance and environmental friendliness, and avoiding environmental pollution and material waste caused by material leakage.

[0015] Preferably, a rubber corrugated sealing gasket is installed between the bottom surface of the flange and the housing. This gasket utilizes the elastic deformation of the rubber material to fill the tiny gaps at the flange connection, effectively preventing dust generated during material descent from leaking through the interface, improving the overall sealing performance of the equipment, and meeting environmental protection production requirements. The corrugated structure design enhances the gasket's resistance to deformation, accommodating slight displacements under equipment vibration conditions, and increasing the complexity of dust leakage paths through the corrugations, further reducing the risk of dust spillage. Simultaneously, the cushioning effect of the rubber material reduces rigid impact between the flange and the housing, lowers vibration-transmitted noise, and extends the service life of the flange connection components. This sealing structure is easy to install, low in cost, and significantly improves the environmental friendliness and operational stability of the equipment while ensuring material control accuracy.

[0016] Preferably, the vibration source includes an eccentric wheel that is rotatably mounted on the inner wall of the housing and a motor connected to the eccentric wheel.

[0017] As can be seen from the above technical solutions, the advantages of this utility model include: the adjustable feed vibrating screen, by setting a baffle plate on one side of the feed chute with an adjustable height via a lifting mechanism, can control the material throughput between the feed chute and the screen, avoiding excessively thick material layers that affect screening accuracy, improving material distribution uniformity, and increasing screening efficiency; the cooperative structure of the baffle plate and the feed chute can reduce the direct impact of materials on the screen and the side wall of the equipment, and combined with the design of the feed chute being inserted into the box, it effectively reduces dust overflow and enhances environmental performance; the extension plate set at one end of the screen is located below the feed chute, and the material gathers on the extension plate, and then the baffle plate evenly distributes the material to the screen surface, further optimizing the uniformity of material distribution, and the shock-absorbing springs on the bottom of the box can reduce the impact of vibration on the equipment foundation, extending the service life of the equipment. The overall structure has significant beneficial effects in terms of material control, wear reduction, pollution reduction, and stability improvement. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a structural schematic diagram of the lifting mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the locking component of this utility model;

[0023] Figure 5 This is a schematic diagram of the feed pipe of this utility model;

[0024] Figure 6 This is a schematic diagram of the feed chute of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1-box body, 2-screen, 3-vibration source, 4-feed pipe, 5-feed chute, 6-baffle plate, 7-rack, 8-gear, 9-drive shaft, 10-bearing seat, 11-limit gear, 12-clamping gear, 13-fixed plate, 14-connecting rod, 15-handwheel, 16-rubber corrugated sealing gasket, 17-shock-absorbing spring;

[0026] 201-Extension plate; 401-Flange 1; 402-Gap 1; 501-Flange 2; 502-Gap 2; 601-Wear-resistant sealing layer. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] like Figure 1 As shown, an adjustable-feed environmentally friendly screen includes a housing 1, a screen 2 installed inside the housing 1, a vibration source 3 mounted on the side wall of the housing 1, several damping springs 17 mounted on the bottom surface of the housing 1, a feed pipe 4 mounted on one end of the top surface of the housing 1, and a feed chute 5 connected to the feed pipe 4. The feed chute 5 is inserted into the housing 1; a gap is provided between the feed chute 5 and the screen 2; a baffle plate 6 is fitted on one side wall of the feed chute 5; the baffle plate 6 is connected to a lifting mechanism; the lifting mechanism is mounted on the feed pipe 4; an extension plate 201 is mounted on one end of the screen 2; the extension plate 201 is positioned below the feed chute 5. The vibration source 3 includes an eccentric wheel rotatably mounted on the inner wall of the housing 1 and a motor connected to the eccentric wheel.

[0029] This adjustable-feed vibrating screen features a baffle plate 6 on one side of the feed chute 5, whose height can be adjusted via a lifting mechanism. This controls the material flow between the feed chute 5 and the screen 2, preventing excessively thick material layers from affecting screening accuracy, improving material distribution uniformity, and increasing screening efficiency. The combined structure of the baffle plate 6 and the feed chute 5 reduces the direct impact of material on the screen 2 and the side walls of the equipment. Combined with the design of the feed chute 5 being inserted into the housing, it effectively reduces dust spillage and enhances environmental performance. An extension plate 201 at one end of the screen 2 is located below the feed chute 5. Material accumulates on the extension plate 201 and is then evenly distributed to the surface of the screen 2 by the baffle plate 6, further optimizing the uniformity of material distribution. The shock-absorbing spring 17 on the bottom of the housing 1 reduces the impact of vibration on the equipment foundation, extending the service life of the equipment. The overall structure has significant beneficial effects in terms of material control, wear reduction, pollution reduction, and improved stability.

[0030] like Figure 2 , Figure 5 and Figure 6 As shown, a wear-resistant sealing layer 601 is provided on the side of the baffle plate 6 that contacts the outer wall of the feed chute 5. A flange 401 is provided at the lower end of the feed pipe 4; a gap 402 is provided between one side of the flange 401 and the outer wall of the feed pipe 4, which is fitted with the baffle plate 6; a flange 501 is provided at the upper end of the feed chute 5; a gap 502 is provided between one side of the flange 501 and the outer wall of the feed chute 5, which is fitted with the baffle plate 6. A rubber corrugated sealing gasket 16 is provided between the bottom surface of the flange 501 and the housing 1.

[0031] The feed pipe 4 is equipped with flange 401 at the lower end and flange 501 at the upper end of the feed chute 5. Both flanges cooperate with the baffle plate 6 to form gap 402 and gap 502, respectively. This allows the baffle plate 6 to slide along the gap under the drive of the lifting mechanism, ensuring the smoothness of the baffle plate 6's lifting and adjusting. The gap structure can reduce material leakage while ensuring effective material control by the baffle plate 6. A rubber corrugated sealing gasket 16 is installed between the bottom surface of flange 2501 and housing 1. The elastic deformation of the rubber material can fill the tiny gaps at the flange connection, effectively preventing dust generated during material falling from the interface and improving the overall sealing performance of the equipment, which meets the requirements of environmentally friendly production. The corrugated structure design enhances the deformation resistance of the sealing gasket, which can not only adapt to slight displacement under equipment vibration conditions, but also increase the complexity of dust leakage path through corrugation pleats, further reducing the risk of dust spillage. At the same time, the buffering effect of the rubber material can reduce the rigid impact between the flange and housing 1, reduce vibration transmission noise, and extend the service life of flange connection components. This sealing structure is easy to install and low in cost, and can significantly improve the environmental friendliness and operational stability of the equipment while ensuring material control accuracy. A wear-resistant sealing layer 601 is provided on the contact side between the baffle plate 6 and the outer wall of the feed chute 5. Wear-resistant materials such as ceramics and rubber can effectively resist the impact and friction when the material falls, significantly extending the service life of the baffle plate 6 and reducing the problem of decreased material control accuracy due to wear. At the same time, it prevents dust and fine particles from overflowing, improves the sealing performance and environmental protection performance of the equipment, and avoids environmental pollution and material waste caused by material leakage.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, the lifting mechanism includes a rack 7 fixedly mounted on the baffle plate 6; the rack 7 meshes with a gear 8; the gear 8 is keyed to a drive shaft 9; the drive shaft 9 is mounted on the side wall of the feed pipe 4 via a bearing seat 10. One end of the drive shaft 9 is connected to a drive assembly. The drive assembly includes a handwheel 15 keyed to the drive shaft 9. In other alternative embodiments, the handwheel 15 is replaced by a motor.

[0033] The system can precisely convert the rotational motion of the drive shaft 9 into the linear lifting motion of the baffle plate 6, achieving high transmission efficiency and strong stability. The keyed connection ensures synchronous rotation between the drive shaft 9 and the gear 8, preventing slippage and improving the accuracy of material control. The bearing housing 10 stably mounts the drive shaft 9 on the side wall of the feed pipe 4, reducing shaking and wear during transmission, making the lifting operation of the baffle plate 6 smoother and more stable. Furthermore, this mechanical transmission structure eliminates the need for a complex electrical control system, simplifying maintenance and reducing costs. It allows for precise manual or mechanical adjustment of the baffle plate 6 height, meeting the feed rate control requirements under different working conditions and enhancing the equipment's practicality and operability. The height of the baffle plate 6 can be quickly changed by rotating the handwheel 15, offering high flexibility and timely response.

[0034] A locking assembly is connected to one side of the drive shaft 9. The locking assembly includes a limiting gear 11 disposed on the outer wall of one side of the drive shaft 9 and a locking tooth 12 that engages with the limiting gear 11. The locking tooth 12 is rotatably mounted on a fixed plate 13. The fixed plate 13 is fixedly mounted on the side wall of the feed pipe 4. A torsion spring is installed between the locking tooth 12 and the fixed plate 13. A connecting rod 14 is connected to the locking tooth 12. The connecting rod 14 is set at an angle to the locking tooth 12. A drive unit is connected to the end of the connecting rod 14 away from the locking tooth 12.

[0035] The locking assembly on one side of the drive shaft 9, through the cooperation of the limiting gear 11 and the locking tooth 12, allows the locking tooth 12 to engage with the groove of the limiting gear 11 after the baffle plate 6 is adjusted to the target height, forming a mechanical locking structure. This effectively prevents the drive shaft 9 from rotating due to material impact or vibration, ensuring the baffle plate 6 is fixed in position and maintaining a stable feed rate. The design of the locking tooth 12 rotating on the fixed plate 13 makes locking and unlocking operations simple and quick; simply rotating the locking tooth 12 is enough to switch between locked and released states. This locking assembly has a compact structure and high reliability. The torsion spring (note: although not marked in the attached diagram, it is inferred from its function that there is a similar elastic element) ensures the engagement of the locking tooth 12 and the limiting gear 11, providing continuous locking force without additional power. This not only meets the requirements of material control for the stability of the baffle plate 6 position but also adapts to the complex working conditions of the vibrating screen, reducing deviations in material control accuracy caused by equipment vibration and improving the overall reliability and safety of the equipment. The locking tooth 12 is connected to and angled with the connecting rod 14. The lever effect of the connecting rod 14 amplifies the operating lever arm, allowing the operator to easily rotate the locking tooth 12 to complete the locking or unlocking action with only a small amount of external force, reducing the intensity of manual operation. The angled structure prevents the movement trajectory of the connecting rod 14 and the locking tooth 12 from coinciding, ensuring that the connecting rod 14 will not interfere with surrounding parts when the locking tooth 12 rotates, thus improving the smoothness of operation. At the same time, the setting of the connecting rod 14 provides a more flexible operating fulcrum for the locking tooth 12. The installation angle and length of the connecting rod 14 can be adjusted according to the site space layout, enhancing the environmental adaptability of the locking component.

[0036] In other alternative embodiments, the lifting mechanism includes an electric push rod, the motor end of which is fixed to the side wall of the feed pipe 4, and the push rod of the electric push rod is connected to the baffle plate 6. However, this requires a control circuit and has higher requirements for the operating environment.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibrating screen with adjustable feed, comprising a housing (1), a screen (2) installed inside the housing (1), a vibration source (3) provided on the side wall of the housing (1), a plurality of damping springs (17) provided on the bottom surface of the housing (1), and a feed pipe (4) provided at one end of the top surface of the housing (1), characterized in that, The feed pipe (4) is connected to the feed chute (5); the feed chute (5) is inserted into the box (1); there is a gap between the feed chute (5) and the screen (2); a baffle plate (6) is provided on one side wall of the feed chute (5); the baffle plate (6) is connected to the lifting mechanism; the lifting mechanism is provided on the feed pipe (4); an extension plate (201) is provided at one end of the screen (2); the extension plate (201) is provided below the feed chute (5).

2. The adjustable feed vibrating screen according to claim 1, characterized in that, A flange (401) is provided at the lower end of the feed pipe (4); a gap (402) is provided between the flange (401) and the outer wall of the feed pipe (4) and the baffle plate (6); a flange (501) is provided at the upper end of the feed chute (5); a gap (502) is provided between the flange (501) and the outer wall of the feed chute (5) and the baffle plate (6).

3. The adjustable feed vibrating screen according to claim 2, characterized in that, The lifting mechanism includes a rack (7) fixedly mounted on the baffle plate (6); the rack (7) is meshed with a gear (8); the gear (8) is keyed to the drive shaft (9); the drive shaft (9) is mounted on the side wall of the feed pipe (4) through a bearing seat (10).

4. The adjustable feed vibrating screen according to claim 3, characterized in that, One end of the drive shaft (9) is connected to a drive assembly.

5. The adjustable feed vibrating screen according to claim 4, characterized in that, The drive assembly includes a handwheel (15) that is keyed to the drive shaft (9).

6. The adjustable feed vibrating screen according to claim 4, characterized in that, A locking assembly is connected to one side of the drive shaft (9); the locking assembly includes a limiting gear (11) set on the outer wall of one side of the drive shaft (9) and a locking tooth (12) that cooperates with the limiting gear (11); the locking tooth (12) is rotatably set on the fixed plate (13); the fixed plate (13) is fixedly set on the side wall of the feed pipe (4); a torsion spring is installed between the locking tooth (12) and the fixed plate (13).

7. The adjustable feed vibrating screen according to claim 6, characterized in that, The locking tooth (12) is connected to the connecting rod (14); the connecting rod (14) and the locking tooth (12) are set at an angle; the end of the connecting rod (14) away from the locking tooth (12) is connected to the drive unit.

8. The adjustable feed vibrating screen according to claim 1, characterized in that, A wear-resistant sealing layer (601) is provided on the side of the baffle plate (6) that contacts the outer wall of the feed chute (5).

9. The adjustable feed vibrating screen according to claim 2, characterized in that, A rubber corrugated sealing gasket (16) is provided between the bottom surface of flange 2 (501) and the box body (1).

10. The adjustable feed vibrating screen according to claim 1, characterized in that, The vibration source (3) includes an eccentric wheel that is rotatably mounted on the inner wall of the housing (1) and a motor connected to the eccentric wheel.

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