CN216500683U

CN216500683U - Wedge-shaped guiding and pressing device for vibrating screen

Info

Publication number: CN216500683U
Application number: CN202123434701.0U
Authority: CN
Inventors: 李要民; 王涛; 贾自银; 姜学忠; 颜邦国; 李大渭; 马利民
Original assignee: Puyang Gongzhen Petroleum Machinery Co ltd
Current assignee: Puyang Gongzhen Petroleum Machinery Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-13
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a wedge-shaped guiding and pressing device for a vibrating screen, which comprises: the device comprises a bottom frame for placing a screen, wherein a wedge block for realizing compaction is arranged above the screen; side plates are vertically arranged on two sides of the bottom frame, and a transmission device is arranged on each side plate and can drive the wedge-shaped blocks to move along the length direction of the screen; the wedge runs through both sides wall and is provided with the chute, be provided with on the curb plate simultaneously with wedge chute sliding fit's back shaft, the wedge is installed on the back shaft, thereby and the back shaft can slide in the chute and guide the direction of motion of wedge, finally realizes compressing tightly the screen cloth. The device has stable structure and simple operation, and is convenient for replacing and disassembling the screen.

Description

Wedge-shaped guiding and pressing device for vibrating screen

Technical Field

The utility model relates to the field of vibrating screen tensioning devices, in particular to a vibrating screen wedge-shaped guiding and pressing device.

Background

The vibrating screen system has unbalanced weight on the upper and lower ends of the driving shaft to convert the rotation of the motor into horizontal, vertical and inclined three-dimensional motion, and the motion is transmitted to the screen surface to throw the material onto the screen surface and to move forwards linearly for reasonable matching. The screen is the main part of the vibrating screen for screening solid-phase particles, and plays roles in throwing the particles and grading and screening. The screen cloth is easy to wear and tear at the screening in-process screen cloth, needs frequently to change the screen cloth, therefore quick overspeed device tensioner has important influence to improving shale shaker work efficiency. The traditional screen tensioning methods are roughly divided into three types, namely a bolt tensioning method, a wedge block pressing method and a rotating shaft winding method, wherein the wedge block pressing method is most widely used, and the tensioning method generally adopts manual knocking to drive a wedge block to move, so that the screen is fixed by the pressure of the wedge block. In the vibrating screen with a double-layer vibrating screen or a stepped screen arrangement mode, a lower-layer screen adopts a wedge block compression mode, and wedge locking and detaching operations of wedge blocks are difficult to perform.

In the prior art, because the length size of the vibrating screen is large, a plurality of wedge-shaped blocks are generally adopted to apply pressure to the vibrating screen for fixing, but the workload for disassembling the screen is large.

Therefore, how to provide a vibrating screen pressing device which is stable in pressing and convenient to disassemble is a problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a wedge-shaped guiding and pressing device for a vibrating screen, which is stable and convenient to press and disassemble.

In order to achieve the above object, the present invention provides a wedge guide compressing apparatus for a vibrating screen, comprising: the device comprises a bottom frame used for placing a screen, wherein a wedge-shaped block is arranged above the screen, and two sides of the bottom frame are vertically provided with side plates; the side plate is provided with a transmission device, and the transmission device can drive the wedge-shaped block to move along the length direction of the screen;

the wedge-shaped block is provided with a chute, and the inner wall of the side plate is provided with a support shaft in sliding fit with the chute; the support shaft is used for guiding the movement of the wedge-shaped block so as to realize the compaction of the screen.

Optionally, the inner wall of the side plate is obliquely provided with a pressing block, and the pressing block is arranged above the wedge-shaped block to increase pressing force of the wedge-shaped block on the screen.

Optionally, the top surface of the wedge-shaped block is provided with a slope corresponding to the pressing block, and the slope is parallel to the chute to ensure that the pressing force is in the same direction.

Optionally, the transmission comprises: the ratchet shaft and the ratchet wrench sleeved on the ratchet shaft, and the wedge block is provided with a rack matched with the ratchet wrench.

Alternatively, the rack may be arranged inside the wedge-shaped block to cooperate with the transmission.

Alternatively, the transmission means may be driven synchronously by a connecting shaft provided between the two side plates.

Optionally, a rubber plate is disposed between the screen and the chassis.

Compared with the prior art, the utility model is provided with the underframe for placing the screen, and the wedge-shaped block for realizing compaction is arranged above the screen; side plates are vertically arranged on two sides of the bottom frame, and a transmission device is arranged on each side plate and can drive the wedge-shaped blocks to move along the length direction of the screen; wedge both sides are run through and are provided with the chute, are provided with on the curb plate simultaneously with wedge chute sliding fit's back shaft, the wedge is installed on the back shaft, thereby and the back shaft can slide in the chute and guide the direction of motion of wedge, finally realizes compressing tightly the screen cloth. The device has stable structure and simple operation, and is convenient for replacing and disassembling the screen.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a vibrating screen wedge guide compacting apparatus according to an embodiment of the present invention, illustrating a loose screen mesh;

FIG. 2 is a schematic structural diagram illustrating a screen cloth holding state of a wedge guide and compression device for a vibrating screen according to an embodiment of the present invention;

FIG. 3 is a side view of a wedge guide and hold down apparatus for a shaker in accordance with an embodiment of the present invention;

FIG. 4 is a schematic illustration of another alternative wedge guide and hold-down apparatus for a shaker according to an embodiment of the present invention with the screen in an unsecured configuration;

FIG. 5 is a schematic diagram of another embodiment of a wedge guide and hold-down apparatus for a shaker in a screen hold-down configuration;

fig. 6 is a side view of a transmission provided in an embodiment of the present invention disposed inside.

Wherein:

1-screen mesh, 2-bottom frame, 3-wedge block, 4-side plate, 5-supporting shaft, 6-pressing block, 7-ratchet shaft, 8-ratchet wrench, 9-connecting shaft and 10-rubber plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to the accompanying drawings 1-3, fig. 1 is a schematic structural diagram of a vibrating screen wedge-shaped guiding and compacting device provided by an embodiment of the utility model, wherein a screen mesh is in an unfixed state; FIG. 2 is a schematic structural diagram of a screen mesh fixing state of a wedge-shaped guide and compaction device for a vibrating screen according to an embodiment of the utility model; FIG. 3 is a side view of a wedge guide hold-down device for a shaker in accordance with an embodiment of the present invention; the method comprises the following steps: the device comprises a bottom frame 2 for horizontally placing a screen mesh 1, and a wedge-shaped block 3 arranged above the screen mesh 1 for realizing pressing; two sides of the underframe 2 are vertically provided with side plates 4; the side of the side plate 4 is provided with a transmission device for driving the wedge-shaped block 3 to move along the length direction of the screen mesh 1. A plurality of through chutes are arranged on two side surfaces of the wedge-shaped block 3, support shafts 5 are arranged on the side plates 4 corresponding to the chutes of the wedge-shaped block 3, and the support shafts 5 are perpendicular to the side plates 4 and extend inwards; the inclined groove can be aligned with the support shaft 5 to be installed from the side when the wedge block 3 is installed, and the support shaft 5 can be in sliding fit with the inner wall of the inclined groove; the inclined groove is inclined along the horizontal direction, and a relatively lower end of the inclined groove is assumed to be a first end, and the other end of the inclined groove is assumed to be a second end; the horizontal direction of the first end relative to the second end, i.e. the direction of movement of the wedge 3 against the screen 1. When the bottom surface length of the selected wedge-shaped block 3 is equal to the horizontal length of the screen 1 to be compressed, a worker can align the wedge-shaped block 3 to the support shaft 5 of the side plate 4 through the inclined groove to be installed in a matched mode, and the support shaft 5 is installed and inserted at the first end of the wedge-shaped block 3; subsequently, through operation transmission, control wedge 3 moves along the length direction of screen cloth 1, utilize the cooperation between back shaft 5 and the chute, will guide wedge 3 and move along the slope route of chute, back shaft 5 moves to the second end from the first end of chute gradually, and simultaneously, wedge 3 compresses tightly the top surface of screen cloth 1 gradually, and the two that the contact surface length equals correspond completely, and the firm pressfitting of screen cloth 1 will be realized to the gravity of wedge 3 and the downward packing force that back shaft 5 and chute cooperation produced. Subsequently, when the screen mesh 1 needs to be replaced, the wedge-shaped block 3 only needs to be withdrawn in the opposite direction through the transmission device.

Most need adopt a plurality of wedges 3 to cooperate the pressfitting to 3 pressfitting techniques of wedge among the prior art, nevertheless will greatly increase the work load of dismantling wedge 3 so, consequently, this application only chooses for use a bottom surface and the isometric wedge 3 of target press screen cloth 1, realizes firmly pressing and the direction compresses tightly through setting up a plurality of chutes and back shaft 5. The pressing device is simple in structure and easy to operate, and the dismounting difficulty is reduced on the premise that the pressing stability is guaranteed.

The wedge-shaped block 3 is not limited to be set to have the length of the bottom surface equal to that of the screen mesh 1, and the specific shape and length can be changed according to actual requirements, which is not described herein again.

Further, a pressing block 6 is obliquely arranged on the inner wall of the side plate 4, and the pressing block 6 is arranged above the installation position of the wedge-shaped block 3; when the transmission device controls the wedge-shaped block 3 to press the screen cloth 1 along the horizontal direction, the top surface of the wedge-shaped block 3 is pressed downwards by the bottom surface of the pressing block 6, so that the pressure of the wedge-shaped block 3 on the screen cloth 1 is further increased, the support shaft 5 is prevented from being broken due to too large shearing force borne inside the inclined groove, and the service life of the device is prolonged.

Further, the top surface of the wedge-shaped block 3 is provided with a slope corresponding to the pressing block 6, the slope is partially convex on the surface of the wedge-shaped block 3, when the wedge-shaped block 3 horizontally moves to press the screen 1, the convex slope contacts with the bottom surface of the pressing block 6, and the mutual extrusion acting force of the convex slope is used as additional pressing force to realize the stable pressing of the wedge-shaped block 3 on the screen 1. And the slope can be arranged in parallel corresponding to the chute, and is used for ensuring that the additional pressing force brought by the pressing block 6 is in the same direction with the self pressing force of the wedge-shaped block 3 on the screen mesh 1, so that the mechanical planning of the device structure is more reasonable, and the pressing force loss is reduced.

The ramp is not limited to the form of being partially convex on the surface of the wedge block 3, and the shape and size of the ramp can be changed according to actual requirements, and the ramp is not expanded here.

Further, the above-mentioned transmission device includes: the ratchet wheel shaft 7 and the ratchet wheel wrench 8 are sleeved on the ratchet wheel shaft 7 to enable the ratchet wheel to rotate, and the top surface of the wedge-shaped block 3 is provided with a rack which is in rotating fit with the ratchet wheel; staff's accessible promotes above-mentioned ratchet spanner 8 along the horizontal direction of screen cloth 1, realizes the cooperation transmission of ratchet and rack, and then realizes the horizontal migration of wedge 3, finally realizes compressing tightly and loosening of wedge 3 to screen cloth 1. It should be noted that the rack may be disposed and not limited to be disposed parallel to the pressing block 6 and the inclined groove, so as to ensure that the force is reasonably applied in the moving direction of the wedge-shaped block 3, and ensure that the pressing operation of the wedge-shaped block 3 is implemented without error.

The transmission device is not limited to an implementation mode of matching the ratchet shaft 7 and the ratchet wrench 8, and any transmission structure capable of driving the wedge block 3 to conveniently move along the horizontal direction of the screen cloth 1 can be replaced, and the transmission device is not unfolded here.

Further, referring to the accompanying drawings of fig. 4-6, fig. 4 is a schematic structural diagram of a vibrating screen wedge-shaped guiding and compacting device according to another embodiment of the present invention, wherein the screen mesh is in an unfixed state; FIG. 5 is a schematic diagram of another embodiment of a wedge guide and hold-down apparatus for a shaker in a screen hold-down configuration; fig. 6 is a side view of a transmission provided in an embodiment of the present invention, which includes: in another embodiment, the rack can also be arranged in the hollow-out part of the wedge block 3, and the matching principle of the transmission device and the rack is unchanged. With the rack setting inside wedge 3, though its structural strength is less than the mode with the rack setting at wedge 3 tops, nevertheless so set up and to make transmission be difficult for receiving the direct impact of the material of screen cloth 1 vibration, be favorable to increasing transmission's life.

Furthermore, the transmission device can realize synchronous transmission through the connecting shaft 9 horizontally connected between the two side plates 4, so that a worker can conveniently push the ratchet wrench 8 to jointly push the wedge blocks 3 at the two sides to a pressing position, and the workload of pressing work is reduced; also, the placement of the ratchet wrench 8 inside or outside the side plate 4 will not interfere with the use of the transmission. It should be noted that, if the wedge-shaped blocks 3 on both sides are stressed due to external reasons and do not reach a proper pressing position in the pressing process, the pressing accuracy can be ensured by detaching the connecting shaft 9 and adjusting the pressing mode of the wedge-shaped blocks 3 on one side.

Further, be provided with rubber slab 10 between above-mentioned chassis 2 and the screen cloth 1, rubber slab 10 foreshadowing is in the screen cloth 1 below, and in the screen cloth 1 vibration work process, in order to prevent that wedge 3 from receiving the vibration influence to make the skew appear in the position of compressing tightly, can utilize above-mentioned rubber slab 10 to inhale the shake.

The mode of preventing wedge 3 because of the vibration skew is not only limited to setting up rubber slab 10 between chassis 2 and screen cloth 1, still can be fixed wedge 3 and curb plate 4 through setting up locking means, or adopts modes such as lead screw nut transmission, reduces the condition of wedge 3 skew in the vibration working process, and this text no longer expandes here.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The wedge-shaped guiding and pressing device of the vibrating screen provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A wedge guide hold-down apparatus for a shaker, comprising: the screen mesh rack is characterized by comprising a bottom frame (2) used for placing a screen mesh (1), wherein a wedge-shaped block (3) is arranged above the screen mesh (1), and side plates (4) are vertically arranged on two sides of the bottom frame (2); the side plate (4) is provided with a transmission device, and the transmission device can drive the wedge-shaped block (3) to move along the length direction of the screen (1);

the wedge-shaped block (3) is provided with a chute, and the inner wall of the side plate (4) is provided with a support shaft (5) in sliding fit with the chute; the supporting shaft (5) is used for guiding the movement of the wedge-shaped block (3) so as to realize the compaction of the screen (1).

2. A wedge guide press for vibrating screens according to claim 1, characterised in that the inner walls of the side plates (4) are provided with oblique press blocks (6), which press blocks (6) are arranged above the wedge blocks (3) to increase their pressing force against the screen cloth (1).

3. A wedge-shaped guiding and compacting device for vibrating screens according to claim 2, characterized in that the top surface of the wedge-shaped block (3) is provided with a slope corresponding to the compacting block (6), the slope being parallel to the chute to ensure that the compacting forces are in the same direction.

4. A shaker wedge guide compaction device according to claim 3 wherein the transmission comprises: ratchet axle (7) and cover are established ratchet spanner (8) on ratchet axle (7), be provided with on wedge (3) be used for with ratchet spanner (8) complex rack.

5. A wedge guiding and pressing device for a vibrating screen according to claim 4, characterised in that said rack is arranged inside said wedge-shaped block (3) cooperating with said transmission means.

6. A wedge guiding and pressing device for vibrating screens according to claim 5, characterised in that the transmission means are synchronously drivable by means of a connecting shaft (9) arranged between the two side plates (4).

7. A wedge guiding compaction device for a vibrating screen according to any one of the claims 1-6, characterized in that a rubber plate (10) is arranged between the screen cloth (1) and the chassis (2).