Circular vibrating screen with screen plate convenient to replace

Abstract

The circular vibrating screen comprises a supporting frame and the screen plate, the ends, close to each other, of the supporting frame and the screen plate are each of an inverted-trapezoid structure, a first cavity is formed in the supporting frame, a spring bolt is installed in the first cavity through a spring, a second cavity is formed in one side of the first cavity, and the screen plate is arranged in the second cavity. The second cavity communicates with the first cavity through a sliding groove, a sliding block is slidably connected into the sliding groove, one end of the sliding block is fixedly connected with the spring bolt, a rack is installed at the position, extending into the second cavity, of the other end of the sliding block, the rack is meshed with a gear, a hand wheel is installed on the outer wall of the supporting frame, and one end of the hand wheel is fixedly connected with the gear. According to the utility model, the inverted trapezoidal structures are arranged on the sieve plate and the support frame, so that a guiding effect is achieved, quick positioning can be assisted, the sieve plate and the support frame are pushed in, namely positioning, and the sieve plate is convenient and labor-saving to replace in combination with the bare-handed operation of the spring bolt without additional tools.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a circular vibrating screen with easily replaceable screen plates. Background Technology

[0002] Multi-layer linear vibrating screens utilize the excitation principle of a vibrating motor to throw materials onto the screen surface, causing them to move forward in a straight line. Combined with a properly matched screen mesh, this achieves the purpose of screening. The screens feature stable vibration, extremely low noise, simple operation, and excellent screening performance. During the screening process, the material continuously vibrates on the screen mesh, thus achieving screening. Since the material needs to constantly contact and rub against the screen mesh, it is easily damaged. If damaged screen meshes are not replaced in time, it will lead to uneven particle size in the screened material.

[0003] Existing technologies have the following problems:

[0004] After extensive searching, it was found that patent application number CN201920855189.0 discloses a circular vibrating screen that facilitates screen replacement. This patent allows for the replacement of screens by rotating and removing a fixing screw. One person pulls down the base plate, which causes the connecting rod to slide down. The connecting rod then causes the top plate to slide down into the chute. By pulling the screen, the screen is prevented from getting stuck in the screen frame due to the rotation of the rotating wheel, ensuring normal sliding of the screen and easy disassembly and installation.

[0005] Based on the aforementioned patents, it was found that existing patents still have some problems in actual use. The most obvious problems are that multiple fixing screws need to be disassembled, and the screen plate is prone to displacement or jamming due to uneven force when sliding. The replacement process requires the cooperation of multiple people, and there is no guiding structure between the screen plate and the screen frame. The position needs to be adjusted repeatedly during installation, which can easily cause wear on the edge of the screen plate.

[0006] To address these shortcomings, we proposed a circular vibrating screen with easily replaceable screen plates. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a circular vibrating screen that facilitates the replacement of screen plates.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a circular vibrating screen for easy replacement of the screen plate, comprising a support frame and a screen plate, wherein the ends of the support frame and the screen plate that are close to each other are both inverted trapezoidal structures, the support frame has a first chamber inside, and a locking tongue is installed inside the first chamber by a spring, a second chamber is provided on one side of the first chamber, and the second chamber is connected to the first chamber through a sliding groove, a slider is slidably connected inside the sliding groove, one end of the slider is fixedly connected to the locking tongue, the other end of the slider extends into the interior of the second chamber and is fitted with a rack, and a gear meshes on the rack, a handwheel is installed on the outer wall of the support frame, and one end of the handwheel is fixedly connected to the gear, and a locking hole is opened on the surface of the screen plate, the locking tongue being used in conjunction with the locking hole.

[0009] Preferably, the inner wall of the support frame is equipped with pulleys, and there are several pulleys.

[0010] Preferably, the end of the locking tongue near the sieve plate has a wedge-shaped structure.

[0011] Preferably, the edge of the sieve plate is wrapped with a sealing strip.

[0012] Preferably, the length of the first chamber is greater than the total length of the spring and the locking tongue.

[0013] Preferably, the length of the slider is greater than the depth of the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, an inverted trapezoidal structure is set on the sieve plate and the support frame to serve as a guide, which can assist in quick positioning. The sieve plate and the support frame can be positioned by pushing them together. Combined with the spring locking tongue, manual operation is possible without additional tools, making it convenient and labor-saving to replace the sieve plate.

[0016] By setting up several pulleys, this utility model can greatly reduce the friction between the screen plate and the support frame during installation, making the guidance smoother and less labor-intensive. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0018] Figure 1 This is a schematic diagram of the circular vibrating screen with easily replaceable screen plates proposed in this utility model.

[0019] Figure 2This is a cross-sectional view of the circular vibrating screen with easily replaceable screen plates proposed in this utility model.

[0020] Figure 3 for Figure 2 An enlarged diagram of A in the diagram.

[0021] Legend:

[0022] 1. Support frame; 2. Screen plate; 3. Lock hole; 4. Pulley; 5. Locking tongue; 6. First chamber; 7. Spring; 8. Second chamber; 9. Rack; 10. Slide groove; 11. Sliding block; 12. Gear; 13. Handwheel. Detailed Implementation

[0023] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] 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; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Please refer to Figure 1-3A circular vibrating screen for easy screen plate replacement includes a support frame 1 and a screen plate 2. The ends of the support frame 1 and the screen plate 2 that are close to each other are inverted trapezoidal structures. The support frame 1 has a first chamber 6 inside, and a locking tongue 5 is installed inside the first chamber 6 through a spring 7. A second chamber 8 is provided on one side of the first chamber 6, and the second chamber 8 is connected to the first chamber 6 through a slide groove 10. A slider 11 is slidably connected inside the slide groove 10, and one end of the slider 11 is fixedly connected to the locking tongue 5. The other end of the slider 11 extends into the second chamber 8 and is equipped with a rack 9, on which a gear 12 meshes. A handwheel 13 is installed on the outer wall of the support frame 1, and one end of the handwheel 13 is fixedly connected to the gear 12. A locking hole 3 is opened on the surface of the screen plate 2, and the locking tongue 5 is used in conjunction with the locking hole 3.

[0026] When replacing screen plate 2, turn handwheel 13 counterclockwise to rotate gear 12. Rack 9 retracts, causing locking tongue 5 to disengage from locking hole 3. Pull screen plate 2 outward, old screen plate 2 detaches from the equipment, and new screen plate 2 is pushed in. Locking tongue 5 automatically engages with locking hole 3 under the action of spring 7, completing the fixation of screen plate 2. After confirming no abnormalities during no-load test, production can begin. By setting an inverted trapezoidal structure on screen plate 2 and support frame 1, a guiding function is provided, which can assist in quick positioning. Screen plate 2 can be positioned as soon as it is pushed into support frame 1. Combined with the manual operation of spring 7 and locking tongue 5, no additional tools are required, making screen plate 2 replacement convenient and labor-saving. By setting several pulleys 4, the friction between screen plate 2 and support frame 1 during installation can be greatly reduced, making the guidance smoother and labor-saving.

[0027] In this implementation scheme: the inner wall of the support frame 1 is equipped with pulleys 4, and there are several pulleys 4.

[0028] Specifically, it can greatly reduce the friction between the screen plate 2 and the support frame 1 during the installation process, making the guidance smoother and less labor-intensive.

[0029] In this implementation scheme: the end of the locking tongue 5 near the sieve plate 2 is a wedge-shaped structure.

[0030] Specifically, it can adapt to minute positional deviations of the keyhole 3.

[0031] In this implementation plan: the edge of the sieve plate 2 is wrapped with a sealing strip.

[0032] Specifically, this helps prevent material leakage and cushion vibration impacts.

[0033] In this embodiment, the length of the first chamber 6 is greater than the total length of the spring 7 and the locking tongue 5.

[0034] Specifically, this ensures that when disassembling and replacing the sieve plate 2, the locking tongue 5 can be completely retracted into the first chamber 6 without any movement interference, thus guaranteeing that the sieve plate 2 can be smoothly removed from the support frame 1.

[0035] In this embodiment, the length of slider 11 is greater than the depth of groove 10.

[0036] Specifically, ensure that both ends of the slider 11 can be connected to the rack 9 and the locking tongue 5.

[0037] Working principle: When replacing screen plate 2, turn handwheel 13 counterclockwise to drive gear 12 to rotate. Rack 9 retracts, causing locking tongue 5 to disengage from locking hole 3, pulling screen plate 2 outward. The old screen plate 2 is removed from the equipment, and the new screen plate 2 is pushed in. Locking tongue 5 automatically engages with locking hole 3 under the action of spring 7, completing the fixation of screen plate 2. After confirming that there are no abnormalities during no-load test, production can begin. By setting an inverted trapezoidal structure on screen plate 2 and support frame 1, a guiding function is provided, which can assist in quick positioning. The screen plate 2 can be positioned as soon as it is pushed into the support frame 1. Combined with the manual operation of spring 7 and locking tongue 5, no additional tools are required, making screen plate 2 replacement convenient and labor-saving. By setting several pulleys 4, the friction between screen plate 2 and support frame 1 during installation can be greatly reduced, making the guidance smoother and labor-saving.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A circular vibrating screen with an easily replaceable screen plate, comprising a support frame (1) and a screen plate (2), characterized in that, The support frame (1) and the sieve plate (2) are both inverted trapezoidal structures at their close ends. The support frame (1) has a first chamber (6) inside, and a locking tongue (5) is installed inside the first chamber (6) by a spring (7). A second chamber (8) is provided on one side of the first chamber (6), and the second chamber (8) is connected to the first chamber (6) through a sliding groove (10). A slider (11) is slidably connected inside the sliding groove (10), and one end of the slider (11) is fixedly connected to the locking tongue (5). The other end of the slider (11) extends into the second chamber (8) and is equipped with a rack (9), and a gear (12) meshes on the rack (9). A handwheel (13) is installed on the outer wall of the support frame (1), and one end of the handwheel (13) is fixedly connected to the gear (12). A locking hole (3) is provided on the surface of the sieve plate (2), and the locking tongue (5) is used in conjunction with the locking hole (3).

2. The circular vibrating screen with easily replaceable screen plates according to claim 1, characterized in that, The inner wall of the support frame (1) is equipped with pulleys (4), and there are several pulleys (4).

3. The circular vibrating screen with easily replaceable screen plates according to claim 1, characterized in that, The locking tongue (5) has a wedge-shaped structure at the end near the sieve plate (2).

4. The circular vibrating screen with easily replaceable screen plates according to claim 1, characterized in that, The edge of the sieve plate (2) is wrapped with a sealing strip.

5. The circular vibrating screen with easily replaceable screen plates according to claim 1, characterized in that, The length of the first chamber (6) is greater than the total length of the spring (7) and the locking tongue (5).

6. The circular vibrating screen with easily replaceable screen plates according to claim 1, characterized in that, The length of the slider (11) is greater than the depth of the groove (10).

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