CN113909096B

CN113909096B - Vibrating screen

Info

Publication number: CN113909096B
Application number: CN202111139230.2A
Authority: CN
Inventors: 刘文哲; 刘志君; 徐要忠
Original assignee: Henan Zhongyu Dingli Intelligent Equipment Co ltd
Current assignee: Henan Zhongyu Dingli Intelligent Equipment Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-07-12
Anticipated expiration: 2041-09-28
Also published as: CN113909096A

Abstract

The invention discloses a vibrating screen which comprises an upper screen beam, a lower screen beam, a screen and a screen pressing mechanism, wherein the upper screen beam is arranged on the upper side of the lower screen beam; the screen mesh pressing mechanism comprises an upper connecting plate, a lower connecting plate, a positive wire Y-shaped joint, a negative wire Y-shaped joint and a positive and negative wire screw rod, and the upper connecting plate is vertically fixed below the upper screen beam; one end of the positive wire Y-shaped joint is vertically hinged with the upper connecting plate, and the other end of the positive wire Y-shaped joint is in threaded connection with the upper end of the positive and negative wire screw; one end of the reverse-thread Y-shaped joint is in threaded connection with the lower end of the positive-reverse-thread screw, and the other end of the reverse-thread Y-shaped joint is vertically hinged with the lower connecting plate; a pressure lever is fixed at the bottom of the lower connecting plate; when the end part of the pressure lever is pressed against a limiting block at the discharge port of the vibrating screen, the positive and negative screw rods tend to be vertical to the screen; the top of the lower sieve beam is fixed with a lower puller block, the screen is placed on the lower puller block, and the lower puller block and the press rod are pressed with the screen up and down. The screen mesh pressing mechanism has a self-fastening effect on the screen mesh in the use process of the vibrating screen, and the forward and reverse screw rods are pulled outwards and inclined to loosen the screen mesh during disassembly, so that the vibrating screen is convenient to disassemble, and is time-saving and convenient.

Description

Vibrating screen

Technical Field

The invention belongs to the technical field of material screening, and particularly relates to a vibrating screen.

Background

The vibrating screen in the prior art is mainly integrally connected with the screen box through densely arranged fastening bolts, the screen box needs to be loosened and replaced by manually entering the screen box when the screen is replaced, long time is needed for replacing the screen at each time, and the working efficiency is low. In addition, when the screen box is manufactured, in order to facilitate the passing of maintenance personnel and the replacement of the screen, enough height needs to be reserved between every two layers in the screen box, and space and materials are wasted.

Disclosure of Invention

The invention provides a vibrating screen mesh pressing device which can be used for quickly disassembling a screen mesh without manually entering a screen box for operation.

The technical scheme of the invention is as follows:

a vibrating screen comprises an upper screen beam, a lower screen beam, a screen and a screen pressing mechanism; the screen mesh pressing mechanism comprises an upper connecting plate, a lower connecting plate, a positive wire Y-shaped joint, a negative wire Y-shaped joint and a positive and negative wire screw rod, the upper connecting plate is vertically fixed below the upper screen beam, one end of the positive wire Y-shaped joint is vertically hinged to the upper connecting plate, the other end of the positive wire Y-shaped joint is in threaded connection with the upper end of the positive and negative wire screw rod, the lower end of the positive and negative wire screw rod is in threaded connection with one end of the negative wire Y-shaped joint, the other end of the negative wire Y-shaped joint is vertically hinged to the lower connecting plate, and a pressing rod is fixed at the bottom of the lower connecting plate; the pressure rod is arranged along the direction from the feed port to the discharge port of the vibrating screen, and a limiting block is arranged at the discharge port of the vibrating screen; when the end part of the pressure lever is abutted against the limiting block, the screw rods with the positive and negative wires tend to be vertical to the screen; the screen cloth pressing device is characterized in that a lower jacking block is fixedly arranged at the top of the lower screen beam, and the screen cloth is placed on the lower jacking block, and the pressing rod and the lower jacking block are used for pressing and mounting the screen cloth from the upper part and the lower part respectively.

Preferably, the compression bar is a channel steel, and the lower connecting plate is fixed in a groove of the channel steel.

Preferably, the screen mesh hold-down mechanism comprises an upper hoop and a lower hoop, the upper hoop and the lower hoop are connected through bolts and fastened and fixed on the upper screen beam, and the lower hoop is fixedly connected with the upper connecting plate.

Preferably, a plurality of the screen mesh pressing mechanisms and a plurality of the lower tightening blocks are fixed on the pressing rod.

Preferably, the lower jacking block positioned right below the screen mesh pressing mechanism is of an inverted L shape, and the screen mesh is placed on the upper plane of the inverted L-shaped lower jacking block; the lower jacking block positioned between the two screen mesh pressing mechanisms is a straight plate provided with adhesive tapes at the top.

Preferably, a first compression nut is arranged between the positive and negative screw rod and the positive screw Y-shaped joint, and a second compression nut is arranged between the positive and negative screw rod and the negative screw Y-shaped joint.

Preferably, angle iron supports are arranged below two side edges of the screen.

The invention has the beneficial effects that: according to the vibrating screen, the screen mesh pressing mechanism is arranged on the lower screen beam, the screen mesh is pressed on the lower jacking block when the positive and negative screw rods hinged with the two end parts on the screen mesh pressing mechanism tend to be perpendicular to the screen mesh, and the positive and negative screw rods are pulled outwards to be inclined during disassembly so that the screen mesh is loosened and disassembled; and under the material pushing and gravity action in the material screening process, the pressing rod automatically supports and presses towards the direction of the limiting block, so that the screen pressing mechanism has a self-fastening effect on the screen.

Drawings

Fig. 1 is a schematic view of the vibrating screen structure of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is an enlarged view of fig. 2 at B.

Fig. 5 is a schematic structural diagram of the connection of the screen mesh pressing mechanism and the pressing rod.

Fig. 6 is a left side view of fig. 5.

In the figure: 1. an upper sieve beam, 11 and an upper hoop; 12. a lower hoop; 13. a bolt; 14. a nut; 2. a screen beam is arranged; 21. 22, 23, a lower puller block; 24. a rubber pad; 3. screening a screen; 4. a screen mesh pressing mechanism; 41. an upper connecting plate; 42. a positive filament Y-shaped joint; 43. a reverse-filament Y-shaped joint; 44. a positive and negative screw; 45. a first compression nut; 46. a lower connecting plate; 47. a second compression nut; 5. a pressure lever; 6. a feed inlet; 7. a discharge port; 8. a limiting block; 9. a pulling device; 10. angle iron.

Detailed Description

The present invention will be described in detail with reference to examples.

Fig. 1 is a schematic structural view of a vibrating screen according to the present invention, fig. 2 is a left side view of fig. 1, and fig. 3 is an enlarged view of fig. 2 at a.

As shown in fig. 1, 2 and 3, the vibrating screen of the present invention comprises an upper screen beam 1, a lower screen beam 2, a screen cloth 3 and a screen cloth hold-down mechanism 4. Fig. 5 is a schematic structural diagram of the connection between the screen hold-down mechanism and the press rod, fig. 6 is a left side view of fig. 5, and as shown in fig. 2, 5 and 6, the screen hold-down mechanism 4 includes an upper connecting plate 41, a lower connecting plate 46, a positive thread Y-shaped joint 42, a negative thread Y-shaped joint 43 and a positive and negative thread screw 44. The upper connecting plate 41 is vertically fixed below the upper screen beam 1, one end of the positive wire Y-shaped joint 42 is vertically hinged to the upper connecting plate 41, the other end of the positive wire Y-shaped joint 42 is in threaded connection with the upper end of the positive and negative wire screw 44, the lower end of the positive and negative wire screw 44 is in threaded connection with one end of the negative wire Y-shaped joint 43, the other end of the negative wire Y-shaped joint 43 is vertically hinged to the lower connecting plate 46, and a pressure rod 5 is fixed at the bottom of the lower connecting plate 46. The pressure rod 5 is arranged along the direction from the feed port 6 to the discharge port 7 of the vibrating screen, and the discharge port 7 of the vibrating screen is provided with a limiting block 8; when the end of the compression bar 5 is pressed against the limiting block 8, the positive and negative screw rods 44 tend to be perpendicular to the screen 3. The top of the lower sieve beam 2 is fixedly provided with

lower puller blocks

21, 22 and 23, and the sieve mesh 3 is placed on the

lower puller blocks

21, 22 and 23. The vibrating screen is provided with a plurality of upper screen beams, the upper screen beams are provided with a plurality of screen mesh pressing mechanisms, and the pressing rods and the lower pressing blocks are used for pressing the screen mesh 3 from the top and the bottom respectively.

When the vibrating screen is used for installing the screen 3, the screen pressing mechanism 4 can be adjusted firstly, and the method comprises the following steps: the distance between the upper connecting plate 41 and the lower connecting plate 46 is increased or decreased by screwing the positive and negative screw rods 44, so that the distance between the screen cloth pressing mechanism 4 and the upper screen beam 1 and the lower screen beam 2 can be proper. After all the screen compacting mechanisms are adjusted, the pressing rod 5 is pulled from the feed port 6, and because the positive wire Y-shaped joint 42 and the upper connecting plate 41 of the screen compacting mechanism 4 are hinged, and the lower connecting plate 46 and the negative wire Y-shaped joint 43 are also hinged, the positive and negative wire screws 44 of the screen compacting mechanism 4 incline towards the feed port 6 direction, so that gaps between the pressing rod 5 and each lower tightening block become larger, at the moment, the screen 3 is pushed into the discharge port 7 from the feed port 6 direction and is placed between the pressing rod 5 and each lower tightening block of each screen compacting mechanism, at the moment, the pressing rod 5 is pushed towards the discharge port 7 direction until the end part of the pressing rod 5 is abutted against the limiting block 8, at the moment, the positive and negative wire screws 44 tend to be perpendicular to the screen 3, the supporting height of the positive and negative wire screws 44 reaches the maximum, and the screen 3 is compacted. In the working process of the vibrating screen, materials are arranged on the screen cloth 3, and the height of the feeding hole 6 of the vibrating screen is larger than that of the discharging hole 7, so that the pressing rod 5 is automatically pressed towards the direction of the limiting block 8 naturally, and the screen cloth 3 can be automatically fastened continuously when the materials are screened. When the screen 3 is damaged and needs to be replaced, the pulling device 9 is used for pulling the positive and negative wire screws 44 of the screen pressing mechanisms outwards from the feed port 6, and because the positive wire Y-shaped joints 42 and the upper connecting plates 41 of the screen pressing mechanisms 4 are hinged and the lower connecting plates 46 and the negative wire Y-shaped joints 43 are also hinged, gaps between the pressing rods 5 and the lower pressing blocks of the screen pressing mechanisms can be enlarged by pulling, so that the screen 3 can be easily pulled out and detached from the direction of the feed port 6. The sieve box of the vibrating sieve does not need to be manually disassembled, and the vibrating sieve is simple to operate, time-saving and labor-saving. Because the manual work does not need to get into the inside of shale shaker case, the height of sieve case also need not too high, has practiced thrift space and material. The pulling device 9 may use a jack.

Preferably, the compression bar 5 is a channel steel, and the lower connecting plate 46 is fixed in a groove of the channel steel. The channel steel is used as the pressing rod, the lower connecting plate 46 can be fixedly installed by utilizing the groove of the channel steel, and the device is firm and convenient. Other profiles, such as square steel, T-section steel, etc., can also be used for the strut 5.

The screen mesh pressing mechanism 4 and the upper screen beam 1 can be fixed by welding, bolting and the like of the upper connecting plate 41 and the upper screen beam 1. Preferably, the screen mesh pressing mechanism 4 comprises an upper hoop 11 and a lower hoop 12, as shown in fig. 5 and 6, the upper hoop 11 and the lower hoop 12 are connected and fastened and fixed on the upper screen beam 1 through bolts 13 and nuts 14, and the lower hoop 12 is fixedly connected with the upper connecting plate 41. The connection mode is particularly suitable for connection when the upper screen beam 1 is a cylindrical beam, and is convenient to install and replace and firm in connection.

Preferably, a plurality of the screen mesh pressing mechanisms 4 and a plurality of the lower tightening blocks are fixed on the pressing rod 5. More preferably, the lower tightening block 22 located right below the screen mesh pressing mechanism 4 is of an inverted L shape, as shown in fig. 3, the screen mesh 3 is placed on the upper plane of the inverted L-shaped lower tightening block 22; the lower puller block 23 positioned between the two screen mesh pressing mechanisms is a straight plate with adhesive tapes arranged at the top. A plurality of tight piece in top down are tight with the screen cloth top from the lower surface of screen cloth 3, prevent that overweight material from arousing screen cloth 3 damage of caving in the use, and area of contact is bigger when using the tight piece in top down of L type, prevents better that the screen cloth from pushing down and warp. The rubber pad 24 is arranged at the top of the straight lower tightening block, so that the lower tightening block 23 can be prevented from scratching the screen cloth 3 when the screen cloth 3 is installed.

Preferably, a first compression nut 45 is arranged between the positive and negative screw rod 44 and the positive screw Y-shaped joint 42, and a second compression nut 47 is arranged between the positive and negative screw rod 44 and the negative screw Y-shaped joint 43. The threaded connection between the positive and negative screw rods 44 and the positive and negative Y-shaped

joints

42 and 43 can be made stronger by the first and

second compression nuts

45 and 47. More preferably, angle irons 10 are arranged below two side edges of the screen mesh 3 for supporting, and the screen mesh 3 can be prevented from being pressed and deformed by materials on the two side edges by using the angle irons from the two side edges, so that material leakage is caused.

It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. The above embodiments are only some embodiments of the present invention, not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Claims

1. A vibrating screen is characterized by comprising an upper screen beam, a lower screen beam, a screen and a screen compacting mechanism; the screen mesh pressing mechanism comprises an upper connecting plate, a lower connecting plate, a positive wire Y-shaped joint, a negative wire Y-shaped joint and a positive and negative wire screw rod, the upper connecting plate is vertically fixed below the upper screen beam, one end of the positive wire Y-shaped joint is vertically hinged to the upper connecting plate, the other end of the positive wire Y-shaped joint is in threaded connection with the upper end of the positive and negative wire screw rod, the lower end of the positive and negative wire screw rod is in threaded connection with one end of the negative wire Y-shaped joint, the other end of the negative wire Y-shaped joint is vertically hinged to the lower connecting plate, and a pressing rod is fixed at the bottom of the lower connecting plate; the pressure rod is arranged along the direction from the feed port to the discharge port of the vibrating screen, and a limiting block is arranged at the discharge port of the vibrating screen; when the end part of the pressure lever is pressed against the limiting block, the positive and negative screw rods tend to be vertical to the screen; the screen cloth pressing device is characterized in that a lower jacking block is fixedly arranged at the top of the lower screen beam, the screen cloth is placed on the lower jacking block, and the pressing rod and the lower jacking block are used for pressing the screen cloth from top to bottom respectively.

2. The vibratory screen of claim 1, wherein the strut is a channel and the lower web is secured within a channel of the channel.

3. The vibratory screen of claim 1, wherein the screen hold-down mechanism includes an upper anchor ear and a lower anchor ear, the upper anchor ear and the lower anchor ear are fastened and fixed to the upper screen beam by a bolt connection, and the lower anchor ear is fixedly connected to the upper attachment plate.

4. The vibratory screen of claim 3, wherein a plurality of said screen hold down mechanisms and a plurality of said lower hold down blocks are secured to said compression bar.

5. The vibratory screen of claim 4, wherein a lower hold-down block directly below said screen hold-down mechanism is of inverted L-shape, said screen resting on an upper surface of said inverted L-shape lower hold-down block; the lower jacking block positioned between the two screen mesh pressing mechanisms is a straight plate provided with adhesive tapes at the top.

6. The vibratory screen of claim 5, wherein a first compression nut is disposed between the positive and negative lead screws and the positive lead Y-joint and a second compression nut is disposed between the positive and negative lead screws and the negative lead Y-joint.

7. A vibrating screen according to claim 6, wherein there are angle iron supports below the two sides of the screen.