CN216500721U

CN216500721U - Screening device and apparatus

Info

Publication number: CN216500721U
Application number: CN202122587220.7U
Authority: CN
Inventors: 周鹏先; 张才; 赵春林; 边久松
Original assignee: Hebei Gn Solids Control Co ltd
Current assignee: Hebei Gn Solids Control Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-13
Anticipated expiration: 2031-10-26

Abstract

The embodiment of the utility model provides a screening device and screening equipment, and relates to the technical field of mechanical equipment, wherein a pressing piece is movably arranged between a first side plate and a second side plate, so that when a screen is installed, only a driving piece is required to drive the pressing piece to move towards a direction far away from a supporting piece, the distance between the supporting piece and the pressing piece is enlarged, then the screen is placed on the supporting piece, the driving piece is used to drive the pressing piece to move towards a direction close to the supporting piece, and the pressing piece is propped against the screen, so that the pressing installation of the screen can be realized; also only need utilize the driving piece to order about when dismantling and compress tightly the piece and keep away from support piece to compress tightly the piece and reduce gradually to screen cloth pressure, the workman directly take out the screen cloth after compressing tightly piece and screen cloth separation can. Therefore, compared with the prior art, the screen is more convenient to disassemble and assemble by workers, and the working efficiency of the screening equipment is higher.

Description

Screening device and apparatus

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to a screening device and equipment.

Background

With the development of society, various industries have detailed requirements and clear indexes on the shape, size, cleanness and the like of materials, and screening machinery is mechanical equipment which is used for screening various raw materials and various primary products by using actions such as rotation, vibration, reciprocation, shaking and the like according to the granularity of the materials, or removing moisture, impurities and the like in the raw materials and various primary products by using a screen, then carrying out next processing and improving the quality of the products, and is widely applied to multiple industries such as coal, metallurgy, mines, chemical industry, food and the like. The screening machines are of various structural forms and arrangement schemes, but the principle is basically that the relative movement of the bulk materials and the screen surface is utilized to enable partial particles to penetrate through the screen holes, so that the material classification is realized.

However, the inventor researches and discovers that in the existing mechanical screening equipment, the side wall of the screen box is provided with the wedge-shaped clamping beam, then the screen is pressed into the position below the wedge-shaped clamping beam by applying pressure manually, if the installation and the positioning are inaccurate, the operation needs to be repeated continuously, and finally the pressing installation of the screen can be realized, so that a great deal of time and energy are needed for workers to press and disassemble each time, the labor intensity is high, and the working efficiency of the mechanical screening equipment is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a screening device and equipment, which can quickly and accurately realize the compaction of a screen, save manpower and material resources and improve the working efficiency.

The embodiment of the utility model is realized by the following steps:

in a first aspect, the present invention provides a screening device comprising:

the first side plate and the second side plate are arranged oppositely and at intervals;

the support is arranged between the first side plate and the second side plate and used for placing a screen;

the pressing piece is movably arranged between the first side plate and the second side plate and is spaced from the supporting piece;

and the driving piece is connected with the pressing piece and is used for enabling the pressing piece to be close to or far away from the supporting piece.

In an alternative embodiment, the compression member comprises:

the first pressing body is movably arranged on one side, close to the second side plate, of the first side plate;

the second pressing body is movably arranged on one side, close to the first side plate, of the second side plate;

the driving piece is connected with the first pressing body and the second pressing body and used for driving the first pressing body and the second pressing body to be close to or far away from the supporting piece.

In an optional embodiment, the first side plate is provided with a first limiting portion and a second limiting portion which are opposite and spaced from each other, and the first pressing body is partially located between the first limiting portion and the second limiting portion, wherein in a state where the first pressing body abuts against the first limiting portion, a distance between the first pressing body and the supporting member is the largest, and in a state where the first pressing body abuts against the second limiting portion, a distance between the first pressing body and the supporting member is the smallest.

In an alternative embodiment, the first side plate is provided with a first waist-shaped hole, the first pressing body is partially arranged in the first waist-shaped hole in a penetrating manner, and can move along the length direction of the first waist-shaped hole under the action of the driving piece so as to be close to or far away from the supporting piece;

the first waist-shaped hole is provided with a first side wall and a second side wall which are opposite in the length direction, the first side wall is the first limiting portion, and the second side wall is the second limiting portion.

In an optional embodiment, the first pressing body comprises a first pressing block and a first connecting rod which are connected at an included angle, the first pressing block is movably located on one side of the first side plate close to the second side plate, and the first connecting rod penetrates through the first kidney-shaped hole and is connected with the driving piece;

the first connecting rod can move along the length direction of the first kidney-shaped hole under the action of the driving piece so as to drive the first pressing block to be close to or far away from the supporting piece;

the distance between the first pressing block and the supporting piece is the largest in a state that the first connecting rod is abutted against the first side wall, and the distance between the first pressing block and the supporting piece is the smallest in a state that the first connecting rod is abutted against the second side wall.

In an optional embodiment, the second side plate is provided with a third limiting portion and a fourth limiting portion which are opposite and spaced from each other, and the second pressing body is partially located between the third limiting portion and the fourth limiting portion, wherein in a state where the second pressing body abuts against the third limiting portion, a distance between the second pressing body and the supporting member is the largest, and in a state where the second pressing body abuts against the fourth limiting portion, a distance between the first pressing body and the supporting member is the smallest.

In an optional embodiment, the second side plate is provided with a second waist-shaped hole, the second pressing body is partially arranged in the second waist-shaped hole in a penetrating manner, and can move along the length direction of the second waist-shaped hole under the action of the driving piece;

the second kidney-shaped hole is provided with a third side wall and a fourth side wall which are opposite in the length direction of the second kidney-shaped hole, the third side wall is the third limiting portion, and the fourth side wall is the fourth limiting portion.

In an optional embodiment, the second pressing body comprises a second pressing block and a second connecting rod which are connected at an included angle, the second pressing block is movably located on one side, close to the first side plate, of the second side plate, and the second connecting rod penetrates through the second kidney-shaped hole and is connected with the driving piece;

the second connecting rod can move along the length direction of the second waist-shaped hole under the action of the driving piece so as to drive the second pressing block to be close to or far away from the supporting piece;

the second pressing block is arranged on the second side wall of the support piece, and the second pressing block is arranged on the fourth side wall of the support piece.

In an alternative embodiment, the drive member comprises:

the first driving body is arranged on one side, away from the second side plate, of the first side plate, connected with the first pressing body and used for driving the first pressing body to be close to or far away from the supporting piece;

the second driving body is arranged on one side, away from the first side plate, of the second side plate and used for driving the second pressing body to be close to or far away from the supporting piece.

In an alternative embodiment, the screening device comprises at least two supporting pieces and at least two pressing pieces in a one-to-one correspondence, and the supporting pieces are stacked at intervals;

each pressing piece can be close to or far away from the corresponding supporting piece under the action of the driving piece.

In an alternative embodiment, the screening device comprises two of the support members, two of the hold-down members and one of the drive members;

the first driving body is provided with two opposite output ends, the two output ends of the first driving body are respectively connected to the two first pressing bodies, and the two first pressing bodies can respectively approach or depart from the corresponding supporting pieces under the action of the first driving body;

the second driving body is provided with two opposite output ends, the two output ends of the second driving body are respectively connected to the two second pressing bodies, and the two second pressing bodies can be respectively close to or far away from the corresponding supporting pieces under the action of the second driving body.

In an alternative embodiment, the first driving body and the second driving body are both bidirectional hydraulic cylinders or bidirectional pneumatic cylinders, and the first driving body and the second driving body are used for connecting the same pressure pump;

the two opposite ends of the piston rod of the first driving body are respectively connected with the two first pressing bodies, and the two opposite ends of the piston rod of the second driving body are respectively connected with the two second pressing bodies.

In an alternative embodiment, the screening device further comprises:

the elastic piece is arranged on the supporting piece.

In a second aspect, the present invention provides a screening apparatus comprising:

a screening device according to any one of the preceding embodiments;

the screen is placed on the supporting piece, and the pressing piece is abutted to the screen under the action of the driving piece.

The beneficial effects of the embodiment of the utility model include, for example:

the pressing piece is movably arranged between the first side plate and the second side plate, so that when the screen is installed, the pressing piece is driven to move in the direction away from the supporting piece by the driving piece, the distance between the supporting piece and the pressing piece is enlarged, then the screen is placed on the supporting piece, the pressing piece is driven to move in the direction close to the supporting piece by the driving piece, and the pressing piece is abutted against the screen, so that the pressing installation of the screen can be realized; also only need utilize the driving piece to order about when dismantling and compress tightly the piece and keep away from support piece to compress tightly the piece and reduce gradually to screen cloth pressure, the workman directly take out the screen cloth after compressing tightly piece and screen cloth separation can. Therefore, compared with the prior art, the screen is more convenient to disassemble and assemble by workers, and the working efficiency of the screening equipment is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic illustration of a screening device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a screening device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a second side plate according to an embodiment of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

FIG. 5 is an enlarged view of the portion B of FIG. 2;

FIG. 6 is a schematic diagram of a motion state according to an embodiment of the present invention;

fig. 7 is an exploded view of a first drive body and two first compression bodies in accordance with an embodiment of the present invention;

fig. 8 is an exploded view of a second driving body and two second pressing bodies according to an embodiment of the present invention.

1-first side plate; 10-a first kidney-shaped hole; 101-a first side wall; 103-a second side wall; 2-a second side plate; 21-second kidney-shaped hole; 210-a third sidewall; 212-a fourth sidewall; 3-a first compression body; 30-a first connecting rod; 32-a first compact; 321-a first connection hole; 34-a first nut; 4-a second compression body; 41-a second connecting rod; 43-a second compact; 430-second connection hole; 45-a second nut; 5-a first drive body; 6-a second drive body; 7-a screen mesh; 70-adhesive tape; 8-a support member; 81-an elastic member; 9-sealing member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The inventor researches and discovers that the side wall of a screen box of the existing mechanical screening equipment is provided with a wedge-shaped clamping beam, then the screen is pressed into the wedge-shaped clamping beam by applying pressure manually, if the installation and the positioning are inaccurate, the repeated operation is required continuously, and finally the pressing installation of the screen can be realized, so that a large amount of time and energy are required for pressing and dismounting the screen by workers at each time, the labor intensity is high, and the working efficiency of the mechanical screening equipment is influenced.

In view of the above problems found by the inventor, the inventor has studied and proposed a screening device capable of being applied to a screening apparatus, wherein a driving member drives a pressing member movably disposed between a first side plate and a second side plate of the screening apparatus to approach or separate from a supporting member, so as to press or release a screen, thereby facilitating the assembly and disassembly of the screen.

Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 and 2, an embodiment of the present invention provides a screening apparatus, which includes a base, a screening device disposed on the base, and a screen 7 disposed on the screening device, wherein the screening device includes a first side plate 1, a second side plate 2, a support member 8, a pressing member, and a driving member, and the first side plate 1 and the second side plate 2 are disposed opposite to each other and spaced apart from each other and connected to the base of the screening apparatus. The support 8 is disposed between the first side plate 1 and the second side plate 2. The pressing piece is movably arranged between the first side plate 1 and the second side plate 2 and is spaced from the supporting piece 8. The drive member is connected to the hold-down member for moving the hold-down member closer to or away from the support member 8.

As described above, the pressing member is movably disposed between the first side plate 1 and the second side plate 2, when the screen 7 is installed, the pressing member is driven to move in a direction away from the supporting member 8 by the driving member, so that the distance between the supporting member 8 and the pressing member is increased, the screen 7 is placed on the supporting member 8, the pressing member is driven to move in a direction close to the supporting member 8 by the driving member, and the pressing member abuts against the screen 7, so that the pressing installation of the screen 7 can be realized; also only need utilize the driving piece to order about when dismantling and compress tightly the piece and keep away from support piece 8 to compress tightly the piece and reduce gradually to screen cloth 7 pressure, the workman is compressing tightly and directly taking out screen cloth 7 after 7 separation of screen cloth can. Therefore, compared with the prior art, the screen 7 is more convenient to disassemble and assemble by workers, and the working efficiency of the screening equipment is higher.

With continued reference to fig. 1 and 2, the first side plate 1 and the second side plate 2 are disposed in parallel and have substantially the same size and shape. So that a screen 7 can be provided between the first side plate 1 and the second side plate 2. The support 8 may be a plurality of frames connected between the first side plate 1 and the second side plate 2 so that the screen 7 can be placed on the support 8 and particles falling through the screen 7 can pass through.

The pressing piece comprises a first pressing body 3 and a second pressing body 4, and the first pressing body 3 is movably arranged on one side, close to the second side plate 2, of the first side plate 1. The second pressing body 4 is movably disposed on one side of the second side plate 2 close to the first side plate 1. The driving piece is connected with the first pressing body 3 and the second pressing body 4, and is used for driving the first pressing body 3 and the second pressing body 4 to be close to or far away from the supporting piece 8, so that the first pressing body 3 and the second pressing body 4 can respectively press the two sides of the screen cloth 7 under the action of the driving piece, and the screen cloth 7 is guaranteed to be pressed tightly.

Referring to fig. 2 to 4, the first side plate 1 is provided with a first limiting portion and a second limiting portion which are opposite and spaced, and the first pressing body 3 is partially located between the first limiting portion and the second limiting portion, wherein, in a state where the first pressing body 3 is abutted against the first limiting portion, a distance between the first pressing body 3 and the support member 8 is the largest, for example, the first pressing body 3 is spaced from the screen 7 or the first pressing body 3 is only in contact with the screen 7 without applying pressure, so that the screen 7 can be conveniently detached, and for example, the screen 7 can be conveniently placed between the support member 8 and the pressing member. Under the state that first compressor body 3 and spacing portion counterbalance of second, first compressor body 3 is minimum with support piece 8's interval, and first compressor body 3 presses screen cloth 7 this moment to be compacter to guarantee screening plant during operation screen cloth 7's installation stability. Thus, the first stopper portion and the second stopper portion can prevent the first presser body 3 from moving excessively.

The second side plate 2 is provided with a third limiting portion and a fourth limiting portion which are opposite and spaced, and the second pressing body 4 is partially located between the third limiting portion and the fourth limiting portion, wherein in a state that the second pressing body 4 abuts against the third limiting portion, the distance between the second pressing body 4 and the support member 8 is the largest, for example, the second pressing body 4 is spaced from the screen 7 or the second pressing body 4 only contacts with the screen 7 without applying pressure, so that the screen 7 can be conveniently detached, and for example, the screen 7 can be conveniently placed between the support member 8 and the pressing member. Under the state that second compressor body 4 and the spacing portion of fourth held back, first compressor body 3 and support piece 8's interval is minimum, and second compressor body 4 presses screen cloth 7 this moment to be compacter to guarantee screening plant during operation screen cloth 7's installation stability. Thus, the third stopper portion and the fourth stopper portion can prevent the second presser body 4 from moving excessively.

Specifically, the first stopper portion and the second stopper portion are opposed to each other in the width direction of the first side plate 1, and the third stopper portion and the fourth stopper portion are opposed to each other in the width direction of the second side plate 2. The first side plate 1 is provided with a first waist-shaped hole 10 which penetrates through the first side plate 1, the length direction of the first waist-shaped hole 10 is perpendicular to the width direction of the first side plate 1, the first pressing body 3 partially penetrates through the first waist-shaped hole 10, and can move along the length direction of the first waist-shaped hole 10 under the action of the driving piece so as to be close to or far away from the supporting piece 8. The first kidney-shaped hole 10 has a first side wall 101 and a second side wall 103 opposite to each other in the longitudinal direction, the first side wall 101 is a first limiting portion, and the second side wall 103 is a second limiting portion.

The second side plate 2 is provided with a second waist-shaped hole 21 which penetrates through the second side plate, the length direction of the second waist-shaped hole 21 is perpendicular to the width direction of the second side plate 2, and the second pressing body 4 partially penetrates through the second waist-shaped hole 21 and can move along the length direction of the second waist-shaped hole 21 under the action of the driving piece. The second kidney-shaped hole is provided with a third side wall 210 and a fourth side wall 212 which are opposite in the length direction, the third side wall 210 is a third limiting portion, and the fourth side wall 212 is a fourth limiting portion.

Referring to fig. 5, in the present embodiment, the sieving apparatus further includes an elastic member 81 and a sealing member 9, the elastic member 81 is disposed on the supporting member 8, so that the screen 7 rests on the elastic member 81, thereby preventing the screen 7 from being deformed or even damaged due to an excessive force applied thereto when the driving member drives the pressing member to press the screen 7, and simultaneously ensuring the stability of the installation of the screen 7. Further, a strip 70 made of an elastic material may be bonded to the edge of the mesh 7. A sealing element 9 is arranged in each first kidney-shaped hole 10 and each second kidney-shaped hole 21, and the sealing element 9 is made of a flexible material, so that particles can be prevented from flying out of the first kidney-shaped hole 10 or the second kidney-shaped hole 21, and the sealing element 9 can be prevented from obstructing the movement of the first connecting rod 30 and the second connecting rod 41 in the first kidney-shaped hole 10 and the second kidney-shaped hole 21 respectively.

Referring to fig. 6 to 8, the first pressing body 3 includes a first pressing block 32 and a first connecting rod 30 connected at an included angle, the first pressing block 32 is movably located at a side of the first side plate 1 close to the second side plate 2, and the first connecting rod 30 penetrates through the first kidney-shaped hole 10 and is connected to the driving member. The first connecting rod 30 can move along the length direction of the first kidney-shaped hole 10 under the action of the driving piece so as to drive the first pressing block 32 to approach or separate from the support piece 8. The distance between the first pressing block 32 and the support member 8 is the largest in a state where the first connecting rod 30 abuts against the first side wall 101, and the distance between the first pressing block 32 and the support member 8 is the smallest in a state where the first connecting rod 30 abuts against the second side wall 103.

The second pressing body 4 comprises a second pressing block 43 and a second connecting rod 41 which are connected at an included angle, the second pressing block 43 is movably located on one side, close to the first side plate 1, of the second side plate 2, and the second connecting rod 41 penetrates through the second kidney-shaped hole 21 and is connected with the driving piece. The second connecting rod 41 can move along the length direction of the second kidney-shaped hole 21 under the action of the driving piece so as to drive the second pressing block 43 to be close to or far away from the support piece 8. In a state where the second link 41 abuts against the third side wall 210, the distance between the second presser 43 and the support 8 is the largest, and in a state where the second link 41 abuts against the fourth side wall 212, the distance between the second presser 43 and the support 8 is the smallest.

In the present embodiment, the structure of the first pressing body 3 is substantially the same as that of the second pressing body 4, the connection manner of the first connecting rod 30 and the first pressing block 32 is the same as that of the second connecting rod 41 and the second pressing block 43, for example, the connection manner of the first connecting rod 30 and the first pressing block 32 is described, for example, the first pressing block 32 is provided with a first connecting hole 321 penetrating therethrough, the first end of the first connecting rod 30 is provided with an external thread, and the first end of the first connecting rod 30 penetrates through the first connecting hole 321 and is in threaded engagement with the first nut 34, so that the connection of the first connecting rod 30 and the first pressing block 32 is realized. Correspondingly, the second connecting rod 41 and the second pressing block 43 are connected in a manner that the second pressing block 43 is provided with a through second connecting hole 430, the first end of the second connecting rod 41 is provided with an external thread, and the first end of the second connecting rod 41 penetrates through the second connecting hole 430 and is in threaded engagement with the second nut 45, so that the second connecting rod 41 and the second pressing block 43 are connected. Of course, in other embodiments, the first pressing block 32 and the first connecting rod 30 may be integrally connected, and the second pressing block 43 and the second connecting rod 41 may also be integrally connected.

It should be noted that, in other embodiments, the first limiting portion and the second limiting portion may also be two protrusions disposed on the first side plate 1, and the third limiting portion and the fourth limiting portion may also be two protrusions disposed on the second side plate 2, which also can have an effect of limiting the moving ranges of the first pressing body 3 and the second pressing body 4.

With reference to fig. 2, fig. 7 and fig. 8, in the present embodiment, the driving member includes a first driving body 5 and a second driving body 6. The first driving body 5 is disposed on one side of the first side plate 1 departing from the second side plate 2, and connected to the first pressing body 3, so as to drive the first pressing body 3 to be close to or far away from the supporting member 8. The second driving body 6 is disposed on one side of the second side plate 2 departing from the first side plate 1, and is configured to drive the second pressing body 4 to be close to or far away from the supporting member 8.

The screening device comprises at least two supporting pieces 8 and at least two pressing pieces which correspond to each other one by one, and the supporting pieces 8 are stacked at intervals. Each pressing piece can be close to or be far away from a corresponding supporting piece 8 respectively under the effect of the driving piece, so that more than two layers of screens 7 can be placed at the same time.

In particular, the screening device comprises two support elements 8, two pressing elements and a driving element. The first driving body 5 has two opposite output ends, the two output ends of the first driving body 5 are respectively connected to the two first pressing bodies 3, that is, the two output ends of the first driving body 5 are respectively connected to the two first connecting rods 30 of the two first pressing bodies 3, the two first pressing bodies 3 can be respectively close to or far away from the corresponding supporting member 8 under the action of the first driving body 5, that is, the two first pressing blocks 32 are respectively driven by the first driving body 5 to be close to or far away from the supporting member 8 at the two first connecting bodies. The second driving body 6 has two opposite output ends, the two output ends of the second driving body 6 are respectively connected to the two second pressing bodies 4, that is, the two output ends of the second driving body 6 are respectively connected to the two second connecting rods 41 of the second pressing bodies 4, the two second pressing bodies 4 can respectively approach or separate from the corresponding supporting members 8 under the action of the second driving body 6, that is, the two second pressing blocks 43 are respectively at the two second connecting bodies and driven by the first driving body to approach or separate from the supporting members 8.

The first driving body 5 and the second driving body 6 are both bidirectional hydraulic cylinders or bidirectional pneumatic cylinders, and the first driving body 5 and the second driving body 6 are used for being connected with the same pressure pump. The opposite ends of the piston rod of the first driving body 5 are respectively connected to the two first pressing bodies 3, that is, respectively connected to the two first connecting rods 30, the opposite ends of the piston rod of the second driving body 6 are respectively connected to the two second pressing bodies 4, that is, respectively connected to the two second connecting rods 41, that is, one end of the piston rod of the first driving body 5 is connected to the second end of one first connecting body, the other end of the piston rod of the first driving body 5 is connected to the second end of the other first connecting body, one end of the piston rod of the second driving body 6 is connected to the second end of one second connecting body, and the other end of the piston rod of the second driving body 6 is connected to the second end of the other second connecting body. The opposite ends of the piston rod of the first driving body 5 are connected to the two first pressing bodies 3, respectively, and the opposite ends of the piston rod of the second driving body 6 are connected to the two second pressing bodies 4, respectively. In this way, the first and second drivers 5 and 6 are connected to the same pressure pump, and then the first and second pressing bodies 3 and 4 can be moved in synchronization with each other. Of course, in other embodiments, the first driving body 5 and the second driving body 6 may not be synchronized, that is, the first pressing body 3 and the second pressing body 4 may not move synchronously, for example, after the first pressing body 3 contacts the screen 7, the second pressing body 4 contacts the screen 7 again. In addition, the hydraulic pressure and the pneumatic pressure are adopted to drive, so that the pressure applied to the screen 7 by each compression block can be known conveniently through a pressure gauge, and then adjustment can be carried out, namely, the effect of compression sealing is achieved, and meanwhile, the strength of the screen 7 and the whole screening equipment is protected.

It should be noted that, in some embodiments, as shown in fig. 1 and fig. 2, two layers of mesh screens 7 are disposed between the first side plate 1 and the second side plate 2, each layer of mesh screens 7 is formed by splicing a plurality of mesh screens 7, and a pressing assembly formed by two pressing members and a driving member is disposed between every two adjacent upper and lower mesh screens 7, so that, along the length extension direction of the first side plate 1 and the second side plate 2, pressing assemblies corresponding to the number of mesh screens 7 of one layer of mesh screens 7 are disposed, the number of first kidney-shaped holes 10 disposed on the first side plate 1 corresponds to the number of first connecting rods 30, the number of second kidney-shaped holes 21 disposed on the second side plate 2 corresponds to the number of second connecting rods 41, such as four groups of pressing assemblies shown in fig. 1, four first driving bodies 5 and four second driving bodies 6 are all connected to the same pressure pump, the first side plate 1 is provided with eight first kidney-shaped holes 10, the second side plate 2 is provided with eight second kidney-shaped holes 21.

In summary, the pressing member is movably disposed between the first side plate 1 and the second side plate 2, so that when the screen 7 is installed, the pressing member is driven by the driving member to move in a direction away from the supporting member 8, so that the distance between the supporting member 8 and the pressing member is increased, the screen 7 is placed on the supporting member 8, the pressing member is driven by the driving member to move in a direction close to the supporting member 8, and the pressing member abuts against the screen 7, so that the pressing installation of the screen 7 can be realized; also only need utilize the driving piece to order about when dismantling and compress tightly the piece and keep away from support piece 8 to compress tightly the piece and reduce gradually to screen cloth 7 pressure, the workman is compressing tightly and directly taking out screen cloth 7 after 7 separation of screen cloth can. Therefore, compared with the prior art, the screen 7 is more convenient to disassemble and assemble by workers, and the working efficiency of the screening equipment is higher.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device, comprising:

2. A screening device according to claim 1, wherein the compression member comprises:

3. A screening arrangement according to claim 2, wherein the first side plate is provided with first and second opposed and spaced locating portions, the first clamping body portion being located between the first and second locating portions, wherein the spacing between the first clamping body and the support member is greatest in the condition in which the first clamping body abuts the first locating portion and the spacing between the first clamping body and the support member is least in the condition in which the first clamping body abuts the second locating portion.

4. A screening device according to claim 3, wherein the first side plate is provided with a first kidney-shaped hole therethrough, and the first pressing body portion is arranged through the first kidney-shaped hole and is capable of moving along the length direction of the first kidney-shaped hole under the action of the driving member so as to be close to or away from the support member;

5. A screening device as recited in claim 4, wherein said first hold down body includes a first hold down block and a first connecting rod angularly connected, said first hold down block being movably located on a side of said first side plate adjacent to said second side plate, said first connecting rod passing through said first kidney-shaped aperture and being connected to said drive member;

6. A screening device according to claim 2, wherein the second side plate is provided with third and fourth opposed and spaced locating portions, and the second hold-down body is located partially between the third and fourth locating portions, wherein the spacing between the second hold-down body and the support member is greatest in a state in which the second hold-down body is held against the third locating portion, and the spacing between the first hold-down body and the support member is least in a state in which the second hold-down body is held against the fourth locating portion.

7. A screening device according to claim 6, wherein the second side plate is provided with a second kidney-shaped hole therethrough, and the second pressing body portion is arranged through the second kidney-shaped hole and can move along the length direction of the second kidney-shaped hole under the action of the driving member;

8. A screening device as claimed in claim 7, wherein said second hold down body includes a second hold down block and a second connecting rod connected at an included angle, said second hold down block being movably located on a side of said second side plate adjacent to said first side plate, said second connecting rod being disposed through said second kidney shaped aperture and connected to said actuating member;

9. A screening device according to any one of claims 2 to 8, wherein the drive member includes:

10. A screening device according to claim 9, including at least two of said support members and at least two of said hold down members in a one to one correspondence, each of said support members being stacked at intervals;

11. A screening device according to claim 10, wherein said screening device includes two said support members, two said hold down members and a said drive member;

12. A screening device according to claim 11, wherein said first and second driving bodies are both bidirectional hydraulic or pneumatic cylinders, said first and second driving bodies being adapted to be connected to the same pressure pump;

13. A screening device according to claim 1, further comprising:

the elastic piece is arranged on the supporting piece.

14. A screening apparatus, comprising:

a screening device according to any one of claims 1 to 13;