Vibrating screen capable of preventing holes from being blocked and adjusting screen cloth

Abstract

The utility model relates to the field of vibrating screens, in particular to a vibrating screen with an anti-blocking hole and an adjustable screen mesh, which comprises a screen box, through holes are symmetrically formed in two sides of the screen box, and a discharge hole is formed in the bottom of the screen box; the triangular screen mesh plate is arranged in the screen box, and the two sides of the triangular screen mesh plate extend out of the screen box through the through openings in the same side; the fixing plate is fixedly connected to the side wall of the screen box and located on the lower side of the triangular screen mesh plate. The tension springs are fixedly connected to the fixing plate at equal intervals, and the upper ends of the tension springs are fixedly connected with the bottom of the triangular screen plate; in the initial state, the triangular screen plate is tightly attached to the inner bottom face of the through opening under the tension of the tension spring. By the adoption of the structure, when wet and viscous materials are treated, the materials can be continuously shaken, the sieve holes can be continuously cleaned, the blocking probability is greatly reduced, the shutdown cleaning frequency is reduced, and production continuity is guaranteed.

Description

Technical Field

[0001] This utility model relates to a vibrating screen with an adjustable screen mesh for preventing clogging, and more particularly to a vibrating screen with an adjustable screen mesh for preventing clogging, applicable to the field of vibrating screen technology. Background Technology

[0002] Vibrating screens, as key equipment in the field of material screening, are widely used in industries such as mining, building materials, chemicals, and grain processing. Their core working principle is to use a vibration source (such as a motor-driven eccentric structure to generate vibration) to make the screen body and the screen mesh installed inside vibrate periodically, causing the material to make throwing, sliding and other movements on the screen mesh surface. During the material movement, particles smaller than the screen mesh aperture pass through the screen holes and are separated, while particles larger than the aperture are discharged along the screen mesh movement trajectory, thereby completing the grading, impurity removal and screening of materials.

[0003] Although vibrating screens are widely used in industrial production, they still present certain problems when dealing with complex material conditions (such as damp, viscous, and fibrous materials). When processing damp materials, the material is prone to adsorbing moisture onto the screen surface, forming sticky agglomerates. Fiber-containing materials are prone to entanglement and jamming at the screen holes, and highly viscous materials can even fill the screen holes, hindering the normal passage of the material through the screen. This directly leads to a sharp drop in screening efficiency, requiring frequent shutdowns for cleaning, which not only interrupts the production process but also significantly increases labor and time costs. In view of this, this utility model is proposed. Utility Model Content

[0004] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to solve the problem of screen clogging.

[0005] To solve the above problems, this utility model provides a vibrating screen with an adjustable screen and anti-clogging holes, comprising: a screen box, with symmetrical openings on both sides of the screen box and a discharge port at the bottom of the screen box; a triangular screen plate, disposed inside the screen box, with both sides of the triangular screen plate extending out of the screen box through the openings on the same side; a fixing plate, fixedly connected to the side wall of the screen box and located below the triangular screen plate; tension springs, equidistantly fixedly connected to the fixing plate, with the upper end of the tension springs fixedly connected to the bottom of the triangular screen plate; in the initial state, the triangular screen plate is tightly attached to the inner bottom surface of the opening under the tension of the tension springs; a shock-absorbing base, on which the screen box is mounted, and a receiving box is placed on the shock-absorbing base near the discharge port below; and a vibrator, installed at the bottom of the screen box.

[0006] In the aforementioned vibrating screen with adjustable anti-clogging screen, the connection characteristics between the triangular screen plate and the screen box are utilized. When the screen box moves upward, the triangular screen plate moves upward synchronously due to inertia. When the screen box moves downward, the triangular screen plate falls back quickly under the tension of the tension spring and collides with the screen box. This collision generates additional vibration, which loosens and disperses the material attached to the screen surface, preventing the material from clogging the screen holes and ensuring continuous and efficient screening.

[0007] As a further improvement of this application, the shock-absorbing base includes a counterweight base and two sets of shock absorbers. The two sets of shock absorbers are symmetrically arranged between the counterweight base and the screen box, and the two ends of the shock absorbers are rotatably connected to the counterweight base and the screen box, respectively.

[0008] As a further improvement of this application, the vibrator includes a support plate, a rotating shaft, an eccentric roller, and a motor. The support plates are symmetrically and fixedly connected to the bottom of the screen box, the rotating shaft is rotatably connected between the two support plates, the eccentric roller is fixedly connected to the rotating shaft, and the motor is fixedly connected to one of the support plates, with its output end fixedly connected to one end of the rotating shaft.

[0009] As a further improvement to this application, the vibrators are symmetrically distributed on both sides of the discharge port, and the motors in the two sets of vibrators are staggered.

[0010] As a further improvement of this application, an installation plate is fixedly connected to the middle position of the upper opening of the screen box, and multiple first limiting rods are fixedly connected at equal intervals to the bottom of the installation plate. The first limiting rods penetrate downward through the triangular screen plate, and multiple second limiting rods are fixedly connected at equal intervals to the opening of the screen box. The triangular screen plate is slidably connected to the first limiting rods and the second limiting rods.

[0011] As a further improvement of this application, an installation plate is fixedly connected to the middle position of the upper opening of the screen box, and multiple first limiting rods are fixedly connected at equal intervals to the bottom of the installation plate. The first limiting rods penetrate downward through the triangular screen plate, and multiple second limiting rods are fixedly connected at equal intervals to the opening of the screen box. The triangular screen plate is slidably connected to the first limiting rods and the second limiting rods.

[0012] In summary, compared with existing technologies, this anti-clogging adjustable screen vibrating screen uses the synergistic effect of high-frequency shaking and impact vibration to allow materials to be quickly separated and pass through the screen holes, reducing material accumulation and jamming time. Compared with traditional vibrating screens, it can process more materials in the same amount of time, significantly improving production efficiency.

[0013] The elastic connection and impact vibration design between the triangular screen plate and the screen box continuously shakes and cleans the screen holes for wet and sticky materials, greatly reducing the probability of clogging, reducing the frequency of downtime for cleaning, and ensuring continuous production.

[0014] Because of its excellent anti-clogging effect, the equipment does not require frequent start-stop cleaning, thus reducing energy consumption. At the same time, it reduces manual cleaning and equipment wear and tear costs, and long-term use can save enterprises considerable operating expenses.

[0015] In summary, this anti-clogging adjustable screen effectively solves the problems of screen hole clogging and low efficiency in traditional vibrating screens. It is suitable for screening complex materials such as humid and sticky materials, helping enterprises improve production efficiency and control costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of this application. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of this application. Figure 2 ;

[0018] Figure 3 This is a partial cross-sectional structural diagram of an embodiment of this application.

[0019] Explanation of the labels in the diagram:

[0020] 1. Screen box; 101. Through-hole; 102. Discharge port; 103. Inclined guide surface; 104. Fixing plate; 105. First limit rod; 106. Second limit rod; 2. Triangular screen plate; 3. Tension spring; 4. Support plate; 401. Rotating shaft; 402. Eccentric roller; 403. Motor; 5. Counterweight base; 501. Shock absorber; 502. Receiving box. Detailed Implementation

[0021] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0022] Implementation method:

[0023] Figures 1-3 The diagram shows a vibrating screen with an adjustable screen for preventing clogging, comprising: a screen box 1, with symmetrical openings 101 on both sides of the screen box 1 and a discharge port 102 at the bottom of the screen box 1; a triangular screen plate 2, disposed inside the screen box 1, with both sides of the triangular screen plate 2 extending out of the screen box 1 through the openings 101 on the same side; a fixing plate 104, fixedly connected to the side wall of the screen box 1 and located below the triangular screen plate 2; tension springs 3, equidistantly fixedly connected to the fixing plate 104, with the upper end of the tension springs 3 fixedly connected to the bottom of the triangular screen plate 2; in the initial state, the triangular screen plate 2 is tightly attached to the inner bottom surface of the openings 101 under the tension of the tension springs 3; a shock-absorbing base, on which the screen box 1 is mounted, with a receiving box 502 placed on the shock-absorbing base near the discharge port 102 below; and a vibrator, installed at the bottom of the screen box 1.

[0024] The shock-absorbing base includes a counterweight base 5 and two sets of shock absorbers 501. The two sets of shock absorbers 501 are symmetrically arranged between the counterweight base 5 and the screen box 1. The two ends of the shock absorbers 501 are rotatably connected to the counterweight base 5 and the screen box 1, respectively.

[0025] The vibrator includes a support plate 4, a rotating shaft 401, an eccentric roller 402, and a motor 403. The support plates 4 are symmetrically fixedly connected to the bottom of the screen box 1. The rotating shaft 401 is rotatably connected between the two support plates 4. The eccentric roller 402 is fixedly connected to the rotating shaft 401. The motor 403 is fixedly connected to one of the support plates 4, and its output end is fixedly connected to one end of the rotating shaft 401.

[0026] When operating a traditional vibrating screen, problems such as a sharp drop in screening efficiency, soaring energy consumption, and frequent shutdowns for cleaning often occur when dealing with wet, sticky, or fibrous materials, as the materials often clog the screen holes. This severely slows down the production pace and increases operating costs. However, when using this vibrating screen, first place the screen on a stable surface and check whether the shock-absorbing base (counterweight base 5, shock absorber 501) is securely connected. Place the receiving box 502 below the discharge port 102 and ensure that all components are not loose or damaged, thus preparing for the screening operation.

[0027] Next, the motor 403 is started. The power output of the motor 403 is transmitted through the rotating shaft 401, which drives the eccentric roller 402 to rotate. Due to the offset of the center of gravity of the eccentric roller 402, and with the buffering and reset characteristics of the shock absorber 501, the screen box 1 begins to shake at high frequency, which in turn drives the triangular screen plate 2 to shake synchronously.

[0028] After the vibrating screen is started, the material to be screened can be sent to the triangular screen plate 2 through the conveying equipment. The material bounces with the screen at high frequency. Fine materials smaller than the screen holes will pass through the screen holes and fall into the receiving box 502 through the discharge port 102, while coarse materials larger than the screen holes will move to both sides along the inclined surface of the screen and leave the screen, falling into the pre-placed material box.

[0029] When processing wet and sticky materials, the connection characteristics between the triangular screen plate 2 and the screen box 1 are utilized (connected by a tension spring 3, not rigidly fixed). When the screen box 1 moves upward, the triangular screen plate 2 moves upward synchronously due to inertia. When the screen box 1 moves downward, the triangular screen plate 2 falls back quickly under the tension of the tension spring 3 and collides with the screen box 1. This collision generates additional vibration, loosening and shaking the material attached to the screen surface, preventing the material from clogging the screen holes, and ensuring continuous and efficient screening.

[0030] The synergistic effect of high-frequency shaking and impact vibration allows materials to be separated quickly and pass through the screen holes, reducing material accumulation and jamming time. Compared with traditional vibrating screens, it can process more materials in the same amount of time, significantly improving production efficiency.

[0031] The elastic connection and impact vibration design between the triangular screen plate 2 and the screen box 1 continuously shakes and cleans the screen holes for wet and sticky materials, greatly reducing the probability of clogging, reducing the frequency of downtime for cleaning, and ensuring continuous production.

[0032] Because of its excellent anti-clogging effect, the equipment does not require frequent start-stop cleaning, thus reducing energy consumption. At the same time, it reduces manual cleaning and equipment wear and tear costs, and long-term use can save enterprises considerable operating expenses.

[0033] In summary, this anti-clogging adjustable screen effectively solves the problems of screen hole clogging and low efficiency in traditional vibrating screens. It is suitable for screening complex materials such as humid and sticky materials, helping enterprises improve production efficiency and control costs.

[0034] Figures 1-3 As shown, the vibrators are symmetrically distributed on both sides of the discharge port 102, and the motors 403 in the two sets of vibrators are staggered.

[0035] The vibrators are symmetrically distributed on both sides of the discharge port 102, and the motors 403 in the two sets of vibrators are staggered. This layout allows the driving force to be transmitted more evenly at the bottom of the screen box 1. The symmetrical distribution can offset the eccentric force generated by vibration on one side, and avoid the screen box 1 from tilting, shaking and other unstable situations due to uneven force. The staggered motors 403 further optimize the power output rhythm, so that the force on each part of the screen box 1 is more coordinated during vibration, reducing the wear of equipment caused by vibration imbalance, providing a reliable guarantee for the continuous and stable operation of the vibrating screen, making the material screening process smoother, and improving the overall operating efficiency and service life of the equipment.

[0036] Figures 1-3 As shown, an installation plate is fixedly connected to the middle position of the upper opening of the screen box 1. Multiple first limiting rods 105 are fixedly connected at equal intervals to the bottom of the installation plate. The first limiting rods 105 penetrate downward through the triangular screen plate 2. Multiple second limiting rods 106 are fixedly connected at equal intervals to the opening 101 of the screen box 1. The triangular screen plate 2 is slidably connected to the first limiting rods 105 and the second limiting rods 106.

[0037] By installing a mounting plate in the middle of the opening at the upper end of the screen box 1, multiple first limiting rods 105 penetrate downwards through the triangular screen plate 2, and multiple second limiting rods 106 are installed at the opening 101, the triangular screen plate 2 is slidably connected to the two types of limiting rods, thus constructing an all-round limiting and guiding structure. The first limiting rods 105 provide longitudinal constraint from above, and the second limiting rods 106 provide auxiliary limiting from the side. The two work together to limit the deviation and sway of the triangular screen plate 2 during the vibrating screening process, ensuring that it vibrates stably along the predetermined trajectory, avoiding uneven screening and material accumulation due to abnormal screen position, improving the stability and reliability of screening operations, and ensuring screening effect and smooth equipment operation.

[0038] Figures 1-3As shown, inclined guide surfaces 103 are symmetrically arranged on both sides of the discharge port 102 at the lower end of the screen box 1.

[0039] The lower part of the screen box 1 is symmetrically provided with inclined guiding surfaces 103 on both sides of the discharge port 102. When the material passes through the triangular screen plate 2, the inclined guiding surfaces 103 can guide the falling material with their own inclined structure, guiding the material to quickly and accurately gather at the discharge port 102, avoiding the accumulation and residue of material at the bottom of the screen box 1, improving the smoothness and thoroughness of material discharge, reducing the risk of secondary blockage caused by material accumulation, and also helping to improve the efficiency of material collection after screening, making the entire screening process more efficient and orderly.

[0040] It should be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0041] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A vibrating screen with an adjustable screen mesh for preventing clogging, characterized in that, include: A sieve box (1) has symmetrical openings (101) on both sides and a discharge port (102) at the bottom. A triangular screen plate (2) is set inside the screen box (1), and the two sides of the triangular screen plate (2) extend out of the screen box (1) through the opening (101) on the same side respectively. A fixing plate (104) is fixedly connected to the side wall of the sieve box (1) and located on the lower side of the triangular sieve plate (2); Tension springs (3) are fixedly connected at equal intervals to the fixed plate (104), and the upper end of the tension springs (3) is fixedly connected to the bottom of the triangular screen plate (2); In the initial state, the triangular screen plate (2) is tightly attached to the inner bottom surface of the opening (101) under the tension of the tension spring (3); The screen box (1) is installed on the shock-absorbing base, and a receiving box (502) is placed on the shock-absorbing base near the discharge port (102). A vibrator is installed at the bottom of the screen box (1).

2. The vibrating screen with an adjustable screen mesh for preventing clogging as described in claim 1, characterized in that, The shock-absorbing base includes a counterweight base (5) and two sets of shock absorbers (501). The two sets of shock absorbers (501) are symmetrically arranged between the counterweight base (5) and the sieve box (1). The two ends of the shock absorber (501) are rotatably connected to the counterweight base (5) and the sieve box (1) respectively.

3. The vibrating screen with an adjustable anti-clogging screen according to claim 1, characterized in that, The vibrator includes a support plate (4), a rotating shaft (401), an eccentric roller (402), and a motor (403). The support plate (4) is symmetrically fixedly connected to the bottom of the screen box (1). The rotating shaft (401) is rotatably connected between two support plates (4). The eccentric roller (402) is fixedly connected to the rotating shaft (401). The motor (403) is fixedly connected to one of the support plates (4), and its output end is fixedly connected to one end of the rotating shaft (401).

4. A vibrating screen with an adjustable screen mesh for preventing clogging, as described in claim 3, characterized in that, The vibrators are symmetrically distributed on both sides of the discharge port (102), and the motors (403) in the two sets of vibrators are staggered.

5. A vibrating screen with an adjustable screen mesh for preventing clogging, as described in claim 1, characterized in that, An installation plate is fixedly connected to the middle position of the upper opening of the sieve box (1). Multiple first limiting rods (105) are fixedly connected at equal intervals at the bottom of the installation plate. The first limiting rods (105) penetrate downward through the triangular screen plate (2). Multiple second limiting rods (106) are fixedly connected at equal intervals at the opening (101) of the sieve box (1). The triangular screen plate (2) is slidably connected to the first limiting rods (105) and the second limiting rods (106).

6. A vibrating screen with an adjustable screen mesh for preventing clogging, as described in claim 1, characterized in that, The lower end of the screen box (1) is symmetrically provided with inclined guide surfaces (103) on both sides of the discharge port (102).

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