Vibrating screen

Abstract

The utility model relates to the technical field of vibrating screens, and provides a vibrating screen, in the working process of the vibrating screen, a wave guide rod continuously vibrates, a first protective sleeve is sleeved outside the wave guide rod, and the wave guide rod is separated from the inner circumferential wall of a first mounting hole through the first protective sleeve; and chippings generated by mutual friction caused by direct contact between the first protective sleeve and the wave guide rod can be avoided. The protection limiting piece arranged on the peripheral wall of the first protection sleeve in a protruding mode is connected with the frame side plate through the fastening assembly, so that axial limiting of the first protection sleeve connected with the protection limiting piece is achieved, and axial movement of the first protection sleeve is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to a vibrating screen. Background Art

[0002] In the production process of lithium nickel cobalt manganese oxide positive electrode materials, there is a screening process before packaging to remove metal and non-metallic impurities in the material. Vibrating screen is a common equipment in this process, which mainly includes screen frame, screen mesh, waveguide rod and ultrasonic transducer. Among them, one end of the waveguide rod is connected to the screen mesh, and the other end passes through the screen frame and is connected to the ultrasonic transducer through a double-headed screw. During the operation of the vibrating screen, there is mutual movement between the waveguide rod and the screen frame, so that the two rub against each other to produce metal particles. Metal particles can easily enter the inside of the vibrating screen through the gap between the two and affect the normal operation of the vibrating screen.

[0003] In order to solve the above technical problems, the prior art proposes to set a rubber sleeve between the waveguide rod and the screen frame. However, due to the high vibration frequency during the operation of the vibrating screen, the rubber sleeve is very likely to move axially during operation, making the protective effect of the rubber sleeve ineffective.

[0004] Therefore, a vibrating screen is urgently needed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a vibrating screen, which can solve the problem of axial reciprocating movement of a protective sleeve sandwiched between a screen frame and a waveguide rod.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A vibrating screen comprises a transducer, a screen frame and a waveguide rod, wherein a first mounting hole is provided on a side plate of the screen frame, and one end of the waveguide rod passes through the first mounting hole and is connected to the transducer; a first protective sleeve is provided between an inner peripheral wall of the first mounting hole and an outer peripheral wall of the waveguide rod;

[0008] A protective limiting piece is protruding from the outer peripheral wall of the first protective sleeve passing through the first mounting hole, and the protective limiting piece is connected to the frame side plate through a fastening assembly.

[0009] As a preferred technical solution of the above-mentioned vibrating screen, the above-mentioned fastening assembly includes:

[0010] Fixed plate;

[0011] A connecting rod, one end of which is connected to the fixing plate, at least two connecting rods are provided, and the at least two connecting rods are arranged at intervals around the circumference of the first mounting hole;

[0012] A locking nut is threadedly connected to the other end of the connecting rod, and the protective limiter and the frame side plate are fixed between the fixing plate and the locking nut.

[0013] As a preferred technical solution of the vibrating screen, the protective limiter and the fixing plate are both located inside the screen frame.

[0014] As a preferred technical solution of the above-mentioned vibrating screen, shock-absorbing pads are sandwiched between the above-mentioned protective limiter and the above-mentioned fixed plate, and between the above-mentioned protective limiter and the above-mentioned frame side plate.

[0015] As a preferred technical solution for the vibrating screen, one end of the waveguide rod located inside the screen frame passes through the fixed plate, and one end of the first protective cover is disposed between the fixed plate and the waveguide rod.

[0016] As a preferred technical solution of the above-mentioned vibrating screen, it also includes:

[0017] A clamping ring, which is sleeved and fixed outside the housing of the transducer;

[0018] A connecting arm, one end of which is connected to the clamping ring, and the other end of which is penetrated by the waveguide rod and is arranged between the locking nut and the frame side plate.

[0019] As a preferred technical solution of the vibrating screen, the connecting arm is connected to a support ring, the waveguide rod is arranged through the support ring, and a second protective cover is arranged between the waveguide rod and the support ring.

[0020] As a preferred technical solution for the above-mentioned vibrating screen, a first adjusting bolt is connected to a radial side of the above-mentioned clamping ring, and the above-mentioned first adjusting bolt is arranged to penetrate one end of the above-mentioned connecting arm along the radial direction of the above-mentioned clamping ring. The above-mentioned first adjusting bolt is threadedly connected to two first adjusting nuts, and one end of the above-mentioned connecting arm is arranged between the two above-mentioned first adjusting nuts.

[0021] As a preferred technical solution of the above-mentioned vibrating screen, any one of the above-mentioned first protective cover, the above-mentioned protective limiter, and the above-mentioned second protective cover is a rubber component or a polytetrafluoroethylene structural component.

[0022] As a preferred technical solution of the above-mentioned vibrating screen, the above-mentioned first protective cover and the above-mentioned protective limiting member are integrally formed structural members.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a vibrating screen, comprising a transducer, a screen frame and a waveguide rod, wherein a frame side plate of the screen frame is provided with a first mounting hole, and one end of the waveguide rod is connected to the transducer after passing through the first mounting hole; a first protective sleeve is arranged between an inner peripheral wall of the first mounting hole and an outer peripheral wall of the waveguide rod; a protective limiting piece is convexly arranged on the outer peripheral wall of the first protective sleeve passing through the first mounting hole, and the protective limiting piece is connected to the frame side plate through a fastening assembly.

[0025] In this way, since a screen is provided in the screen frame of the vibrating screen, and the other end of the waveguide rod is connected to the screen, the transducer works at the same time during the operation of the vibrating screen, and the transducer drives the screen to vibrate slightly through the waveguide rod. During this process, the waveguide rod vibrates continuously, and the first protective cover is mounted on the outside of the waveguide rod. The waveguide rod and the inner circumferential wall of the first mounting hole are separated by the first protective cover, so that the frame side plate and the waveguide rod are prevented from rubbing against each other due to direct contact to generate debris. Furthermore, in order to prevent the first protective cover from axial movement during the vibration of the vibrating screen, a protective limiter is convexly provided on the outer circumferential wall of the first protective cover, and the protective limiter is fixed to the frame side plate through a fastening assembly, so that the first protective cover can be stably installed in the first mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0027] Figure 1 It is a front view of a vibrating screen provided by an embodiment of the utility model;

[0028] Figure 2 It is a side view of the vibrating screen provided by the embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of assembling the fastening assembly, the first protective cover and the protective limiting member provided in an embodiment of the utility model;

[0030] Figure 4 It is a front view of a frame side plate provided by an embodiment of the utility model;

[0031] Figure 5 It is a front view of the protective limiting member provided in the embodiment of the utility model;

[0032] Figure 6 It is a front view of the fastening assembly provided by the embodiment of the utility model.

[0033] In the figure:

[0034] 110, waveguide rod; 120, frame side plate; 121, first mounting hole; 122, second mounting hole;

[0035] 131, first protective cover; 132, protective limiter; 1321, first avoidance hole; 1322, positioning hole;

[0036] 140, fastening assembly; 141, fixing plate; 1411, second avoidance hole; 142, connecting rod; 143, locking nut;

[0037] 151, connecting arm; 1511, first connecting member; 1512, second connecting member; 152, clamping ring; 153, first adjusting bolt; 154, first adjusting nut; 155, supporting ring;

[0038] 160. Shock-absorbing pad;

[0039] 200, transducer;

[0040] 300. Stud bolts. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a vibrating screen, including a transducer 200, a screen frame and a waveguide rod 110, the frame side plate 120 of the screen frame is provided with a first mounting hole 121, one end of the waveguide rod 110 passes through the first mounting hole 121 and is connected to the transducer 200; a first protective cover 131 is arranged between the inner peripheral wall of the first mounting hole 121 and the outer peripheral wall of the waveguide rod 110; a protective limit piece 132 is convexly provided on the outer peripheral wall of the first protective cover 131 passing through the first mounting hole 121, and the protective limit piece 132 is connected to the frame side plate 120 through a fastening assembly 140.

[0046] Since a screen is provided in the screen frame of the vibrating screen, the other end of the waveguide rod 110 is connected to the screen. During the operation of the vibrating screen, the transducer 200 works at the same time, and the transducer 200 drives the screen to vibrate slightly through the waveguide rod 110. During this process, the waveguide rod 110 vibrates continuously, and the first protective cover 131 is sleeved on the outside of the waveguide rod 110. The waveguide rod 110 and the inner peripheral wall of the first mounting hole 121 are separated by the first protective cover 131, which can prevent the frame side plate 120 and the waveguide rod 110 from rubbing against each other due to direct contact to produce debris. Further, in order to prevent the first protective cover 131 from axial movement during the vibration of the vibrating screen, in this embodiment, the outer peripheral wall of the first protective cover 131 is convexly provided with a protective stopper 132, and the protective stopper 132 is fixed to the frame side plate 120 through the fastening assembly 140, so that the first protective cover 131 can be stably installed in the first mounting hole 121.

[0047] It should be noted that the connection between the screen and the waveguide rod 110 is a prior art in the art and will not be described in detail here.

[0048] Preferably, the first protective cover 131 is a polytetrafluoroethylene structural member, which has a self-lubricating property and can reduce the rotational friction between the waveguide rod 110 and the inner wall of the first mounting hole 121, thereby reducing the debris generated by the friction between the two.

[0049] In other embodiments, the first protective cover 131 may also be a rubber member that can undergo elastic deformation. When the waveguide rod 110 vibrates, the rubber member can absorb part of the energy, thereby reducing debris generated by high-frequency impact between the waveguide rod 110 and the inner wall of the first mounting hole 121.

[0050] Optionally, the first protective cover 131 and the protective stopper 132 are integrally formed structural parts, so that the connection between the first protective cover 131 and the protective stopper 132 can be more reliable.

[0051] Optionally, the fastening assembly 140 includes a fixing plate 141, a connecting rod 142 and a locking nut 143, wherein one end of the connecting rod 142 is connected to the fixing plate 141, and at least two connecting rods 142 are provided, and at least two connecting rods 142 are arranged at circumferential intervals around the first mounting hole 121; the locking nut 143 is threadedly connected to the other end of the connecting rod 142, and the protective limit member 132 and the frame side plate 120 are fixed between the fixing plate 141 and the locking nut 143.

[0052] like Figures 3 to 6 As shown, in this embodiment, the protective stopper 132 is provided with a positioning hole 1322, the positioning hole 1322 and the connecting rod 142 correspond one to one, the frame side plate 120 is provided with a second mounting hole 122, the second mounting hole 122 and the positioning hole 1322 correspond one to one, and the connecting rod 142 passes through the positioning hole 1322 and the second mounting hole 122 and is connected to the locking nut 143. In this way, the protective stopper 132 and the frame side plate 120 are fixed between the fixing plate 141 and the locking nut 143, so as to achieve axial limitation of the first protective sleeve 131 connected to the protective stopper 132.

[0053] For example, Figure 4 As shown, there are two second mounting holes 122, which are arranged 180 degrees apart. This arrangement can avoid uneven force on the protective stopper 132, and can improve the connection stability between the fixing plate 141, the protective stopper 132 and the frame side plate 120.

[0054] In addition, a plurality of connecting rods 142 are connected through a fixing plate 141. When the connection between a connecting rod 142 and a corresponding locking nut 143 is loosened, the fixing plate 141 can limit the axial movement of the connecting rod 142 to prevent the loose connecting rod 142 from falling into the vibrating screen. Moreover, the connecting rod 142 is threadedly connected to the locking nut 143, which facilitates the disassembly and replacement of the first protective cover 131.

[0055] Optionally, the protective stopper 132 and the fixing plate 141 are both located inside the screen frame 210. The connecting rod 142 passes through the positioning hole 1322 and the second mounting hole 122 in sequence and is threadedly connected with the locking nut 143, which is located outside for easy screwing of the locking nut 143.

[0056] In other embodiments, the protective limiting member 132 may also be disposed on the outside of the vibrating screen, that is, the protective limiting member 132 and the fixing plate 141 are respectively disposed on opposite sides of the frame side plate 120 .

[0057] Optional, such as Figure 1 As shown, a shock absorbing pad 160 is sandwiched between the protective stopper 132 and the fixed plate 141, and between the protective stopper 132 and the frame side plate 120. The shock absorbing pad 160 can reduce the friction between the protective stopper 132 and the fixed plate 141, and between the protective stopper 132 and the frame side plate 120. Exemplarily, the shock absorbing pad 160 is a rubber pad.

[0058] Optional, such as Figure 3 As shown, one end of the waveguide rod 110 located on the inner side of the screen frame passes through the fixing plate 141 , and one end of the first protective cover 131 is arranged between the fixing plate 141 and the waveguide rod 110 .

[0059] Specifically, the protective stopper 132 is provided with a first avoidance hole 1321, and the first protective cover 131 is coaxially arranged with the first avoidance hole 1321; the fixed plate 141 is provided with a second avoidance hole 1411, and the first protective cover 131 sequentially passes through the first avoidance hole 1321 and the second avoidance hole 1411. Such an arrangement can prevent the waveguide probe 110 from directly contacting the fixed plate 141 and the protective stopper 132, thereby preventing the waveguide probe 110, the fixed plate 141, and the protective stopper 132 from rubbing against each other and generating metal debris.

[0060] Optionally, after the waveguide rod 110 extends out of the screen frame, it is connected to the transducer 200 through a stud bolt 300, which is convenient and quick to disassemble and assemble, and convenient for later maintenance. It should be noted that how the waveguide rod 110 and the transducer 200 are connected through the stud bolt 300 is a prior art in the art and will not be described in detail here.

[0061] Connecting the waveguide rod 110 and the transducer 200 with the stud bolt 300 will cause the transducer 200 to form a cantilever beam structure. Since the mass of the transducer 200 is relatively large, the swing amplitude of the transducer 200 is relatively large during the operation of the vibrating screen, which can easily cause the waveguide rod 110 or the stud bolt 300 to bend and deform.

[0062] To this end, in this embodiment, the vibrating screen further includes a tie ring 152 and a connecting arm 151, wherein the tie ring 152 is fixedly sleeved outside the housing of the transducer 200; one end of the connecting arm 151 is connected to the tie ring 152, and the other end of the connecting arm 151 is penetrated by the waveguide rod 110 and is arranged between the locking nut 143 and the frame side plate 120. In this way, the fixing between the connecting arm 151 and the frame side plate 120 does not require additional connecting parts, simplifying the structure of the vibrating screen. And the tie ring 152 can further fix the transducer 200, reduce its swing amplitude, and thus greatly reduce the probability of bending and deformation of the waveguide rod 110 or the stud bolt 300.

[0063] Optionally, the connecting arm 151 is connected to a support ring 155, the waveguide rod 110 is arranged through the support ring 155, and a second protective cover is arranged between the waveguide rod 110 and the support ring 155. In this way, by providing the second protective cover, direct collision between the waveguide rod 110 and the support ring 155 can be avoided, thereby avoiding debris generated by mutual friction between the waveguide rod 110 and the support ring 155. It should be noted that the second protective cover can be a polytetrafluoroethylene structural member or a rubber member.

[0064] In this embodiment, the connecting arm 151 includes a first connecting member 1511 and a second connecting member 1512, the first connecting member 1511 and the second connecting member 1512 are connected to form an L-shaped structure, the connecting rod 142 is arranged through the first connecting member 1511, the first connecting member 1511 is arranged between the frame side plate 120 and the locking nut 143, and the second connecting member 1512 is connected to the clamp ring 152. In other embodiments, the connecting arm 151 can also be U-shaped, and the number of the second connecting members 1512 is not limited to one, and can also be two, three or more.

[0065] Optionally, the support ring 155 is detachably connected to the connecting arm 151, so that it is easy to maintain and replace. Specifically, the first connecting member 1511 is a plate-like structure, a threaded hole is provided on the first connecting member 1511, and an external thread is provided on the outer peripheral side of the support ring 155. The support ring 155 is threadedly connected to the threaded hole on the first connecting member 1511. In other embodiments, the support ring 155 can also be connected to the first connecting member 1511 by welding or processing into an integral molding. The support ring 155 can also be directly fixedly connected to the frame side plate 120 by welding or other methods.

[0066] Optionally, a first adjusting bolt 153 is connected to one radial side of the clamp ring 152, and the first adjusting bolt 153 is arranged to penetrate one end of the connecting arm 151 in the radial direction of the clamp ring 152. The first adjusting bolt 153 is threadedly connected to two first adjusting nuts 154, and one end of the connecting arm 151 is arranged to be clamped between the two first adjusting nuts 154. Specifically, the second connecting member 1512 is a plate-like structure, and the first adjusting bolt 153 penetrates one end of the second connecting member 1512 away from the first connecting member 1511 in the radial direction of the clamp ring 152, so as to clamp the one end of the second connecting member 1512 away from the first connecting member 1511 between the two first adjusting nuts 154.

[0067] In this way, the coaxiality between the transducer 200 and the waveguide rod 110 can be ensured by adjusting the first adjusting bolt 153 , and the relative position of the connecting arm 151 and the transducer 200 can be fixed by screwing the two first adjusting nuts 154 .

[0068] In other embodiments, the clamp ring 152 may also be connected to the connecting arm 151 through other mechanisms capable of achieving linear reciprocating motion, such as a telescopic rod. This is a well-known technology and will not be listed or elaborated here.

[0069] In this embodiment, the clamping ring 152 includes two clamping members, one end of the two clamping members is hinged by a first hinge shaft, and the axis of the first hinge shaft is parallel to the axis of the first mounting hole 121, and the other end can be connected by a lock so that the clamping ring 152 can be switched between a locked state and an unlocked state. When the clamping ring 152 is in the locked state, one end of the two clamping members is connected by the lock, and the transducer 200 is clamped between the two clamping members; when the lock is opened, the two clamping members are rotated around the first hinge shaft to separate the transducer 200 and the clamping ring 152.

[0070] In other embodiments, both ends of the two clamping members may be connected by a lock.

[0071] Optionally, the lock includes a second adjustment bolt and a second adjustment nut, one end of the second adjustment bolt is hinged to the second hinge shaft of one of the clamping members, and the axial direction of the second hinge shaft is parallel to the axis of the first mounting hole 121, and the other end of the second adjustment bolt passes through the other clamping member and is threadedly connected to the second adjustment nut. In this way, by screwing the second adjustment nut, the size of the annular space formed between the two clamping members can be changed to adapt to various models of transducers 200.

[0072] Preferably, a third protective cover is provided on the inner peripheral wall of the clamp ring 152, so as to prevent the transducer 200 from rubbing against the clamp ring 152 and causing wear. Exemplarily, the third protective cover is a rubber piece.

[0073] Optionally, any one of the first protective cover 131 , the protective limiter 132 , and the second protective cover is a rubber member or a tetrafluoroethylene structural member.

[0074] Furthermore, the fixing plate 141 is a metal plate, and the circumferential side wall of the fixing plate 141 and the side wall facing away from the frame side plate 120 are both provided with a non-metallic coating. During the operation of the vibrating screen, the material in the vibrating screen will collide with the fixing plate 141. By providing the non-metallic coating on the circumferential side wall of the fixing plate 141 and the side wall facing away from the frame side plate 120, it is possible to reduce the generation of metal debris caused by repeated collisions of the fixing plate 141 with the material. In other embodiments, the fixing plate 141 can also be directly selected as a non-metallic plate.

[0075] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vibrating screen, comprising a transducer (200), a screen frame and a waveguide rod (110), wherein a frame side plate (120) of the screen frame is provided with a first mounting hole (121), and one end of the waveguide rod (110) passes through the first mounting hole (121) and is connected to the transducer (200); characterized in that: A first protective sleeve (131) is provided between the inner peripheral wall of the first mounting hole (121) and the outer peripheral wall of the waveguide rod (110); A protective limiting piece (132) is protruding from the outer peripheral wall of the first protective sleeve (131) passing through the first mounting hole (121), and the protective limiting piece (132) is connected to the frame side plate (120) via a fastening assembly (140).

2. The vibrating screen according to claim 1, characterized in that: The fastening assembly (140) comprises: A fixing plate (141); A connecting rod (142), one end of the connecting rod (142) being connected to the fixing plate (141), at least two connecting rods (142) being provided, and at least two connecting rods (142) being arranged at intervals in the circumferential direction of the first mounting hole (121); A locking nut (143) is threadedly connected to the other end of the connecting rod (142); the protective stopper (132) and the frame side plate (120) are fixed between the fixing plate (141) and the locking nut (143).

3. The vibrating screen according to claim 2, characterized in that: The protective limiting member (132) and the fixing plate (141) are both located inside the screen frame.

4. The vibrating screen according to claim 3, characterized in that: A shock-absorbing pad (160) is sandwiched between the protective limiting member (132) and the fixing plate (141), and between the protective limiting member (132) and the frame side plate (120).

5. The vibrating screen according to claim 3, characterized in that: One end of the waveguide rod (110) located on the inner side of the screen frame passes through the fixing plate (141), and one end of the first protective cover (131) is arranged between the fixing plate (141) and the waveguide rod (110).

6. The vibrating screen according to claim 2, characterized in that: Also includes: A clamping ring (152) is sleeved and fixed outside the housing of the transducer (200); A connecting arm (151), one end of the connecting arm (151) is connected to the clamping ring (152), and the other end of the connecting arm (151) is penetrated by the waveguide rod (110) and is arranged between the locking nut (143) and the frame side plate (120).

7. The vibrating screen according to claim 6, characterized in that: The connecting arm (151) is connected to a support ring (155), the waveguide rod (110) is arranged to penetrate the support ring (155), and a second protective sleeve is arranged between the waveguide rod (110) and the support ring (155).

8. The vibrating screen according to claim 7, characterized in that: A first adjusting bolt (153) is connected to one radial side of the clamping ring (152), and the first adjusting bolt (153) is arranged to pass through one end of the connecting arm (151) along the radial direction of the clamping ring (152). The first adjusting bolt (153) is threadedly connected to two first adjusting nuts (154), and one end of the connecting arm (151) is arranged between the two first adjusting nuts (154).

9. The vibrating screen according to claim 7, characterized in that: Any one of the first protective sleeve (131), the protective limiting component (132), and the second protective sleeve is a rubber component or a polytetrafluoroethylene structural component.

10. The vibrating screen according to any one of claims 1 to 9, characterized in that: The first protective sleeve (131) and the protective limiting member (132) are integrally formed structural members.

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