Screen surface pressing structure of linear screen

Abstract

The utility model discloses a screen surface pressing structure of a linear screen, and relates to the technical field related to screening. The vibrating screen comprises a screen frame, a pressing frame, a screen mesh and tightening structures, the pressing frame is arranged above the screen frame, the screen mesh is arranged between the screen frame and the pressing frame, and the tightening structures distributed at equal intervals are arranged above the pressing frame; a first groove is formed in the upper surface of the screen frame, a sharp groove is further formed in the portion, outside the first groove, of the upper surface of the screen frame, a second groove is formed in the lower surface of the pressing frame, and spikes are further arranged on the portion, outside the second groove, of the lower surface of the pressing frame. And the sharp needles penetrate through the sieving net and penetrate into the sharp grooves. By arranging the screen frame, the screen mesh, the pressing frame and the tightening structure, the problems that the side edges of the screen mesh cannot be completely pressed when the screen mesh is installed, the positions of the side edges which are not pressed are prone to deformation, and the center area of the screen mesh is prone to sinking in the long-term working process are solved.

Description

Technical Field

[0001] This utility model belongs to the field of screening-related technology, and in particular relates to a screen surface pressing structure for a linear screen. Background Technology

[0002] The linear vibrating screen is driven by two vibrating motors. When the two motors operate synchronously and in opposite directions, the excitation forces generated by their eccentric blocks cancel each other out in the direction parallel to the motor axes and combine into a resultant force in the direction perpendicular to the motor axes. Therefore, the material's trajectory on the linear vibrating screen is a straight-line parabolic motion. The two motor shafts are at an angle relative to the screen surface. Under the combined action of the excitation force and the material's own weight, the material is thrown up and jumps forward in a straight line on the screen surface, thus achieving the purpose of screening and grading the material. The screen mesh of the linear vibrating screen needs to be installed on the screen frame, but the actual installation of the linear vibrating screen still has the following drawbacks:

[0003] Firstly, the screen of a linear screen is usually installed on the screen frame by fasteners such as bolts. At most, some pressure strips are added to hold the screen down before the bolts are screwed in. However, these screens are only tightened on the part through which the bolts pass. The contact surface of the tightening is too small. The remaining areas without bolts or other tightening points are easy to gradually loosen and deform as screening proceeds. Relying solely on bolts cannot fully tighten all sides of the screen.

[0004] Secondly, as screening proceeds, the central area of ​​the screen is subjected to greater force, making it prone to sinking and affecting subsequent screening results. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to provide a screen surface pressing structure for a linear screen. By setting up a screen frame, screen mesh, pressing frame, and tensioning structure, it solves the problems that the sides of the screen mesh cannot be fully pressed during installation, that the sides that are not pressed are easily deformed, and that the central area of ​​the screen mesh is prone to sinking during long-term operation.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a linear screen surface pressing structure, including a screen frame, a pressing frame, a screen mesh and a tensioning structure. The pressing frame is arranged above the screen frame, the screen mesh is arranged between the screen frame and the pressing frame, and the tensioning structure is arranged above the pressing frame at equal intervals.

[0008] The upper surface of the screen frame is provided with a groove, and the upper surface of the screen frame outside the groove is also provided with a sharp groove. The lower surface of the pressure frame is provided with a groove, and the lower surface of the pressure frame outside the groove is also provided with a spike. The spike passes through the screen and pierces into the sharp groove.

[0009] Furthermore, a rubber strip is pressed into both groove one and groove two, with the rubber strip positioned above the screen, and the screen below the rubber strip being pressed into groove one by the rubber strip.

[0010] Furthermore, the upper surface of the screen frame is provided with screw holes, and the number of bolts is inserted through the pressure frame in an equal number to the number of screw holes, with the tail end of the bolt passing through the screen and screwed into the screw hole below it.

[0011] Furthermore, the cross-sectional areas of the screen frame and the pressure frame are the same.

[0012] Furthermore, the tensioning structure includes an inverted U-shaped bracket fixed to the upper end of the pressure frame. A cross frame is provided below the horizontal part of the bracket. The cross frame is located below the screen, and the cross groove inside the cross frame is engaged with the warp and weft threads of the screen.

[0013] Furthermore, eight steel wires are fixed to the upper end of the cross frame, and the tops of all the steel wires pass through the horizontal part of the bracket and are twisted and locked together.

[0014] This utility model has the following beneficial effects:

[0015] This invention solves the problem of the screen's sides not being fully compressed during installation, leading to easy deformation of the uncompressed sides, by setting up a screen frame, screen mesh, and pressure frame. During installation, the screen mesh is laid flat on the screen frame, and then the rubber strip is pressed onto the screen mesh, pressing the screen mesh into the groove. The pressure frame is then placed on the screen mesh, and the spikes are aligned with the grooves to pierce the screen mesh and insert. Finally, the bolts on the pressure frame are rotated into the bolt holes, completing the full compression of the screen mesh surface. Only a few bolts and the pressure frame are needed to complete the compression. Even when the screen mesh is compressed, the spikes and rubber strip limit the side deformation, ensuring complete compression.

[0016] This invention solves the problem of the central area of ​​the screen easily sinking during long-term operation by setting up a pressure frame and a tensioning structure. The tensioning structure is set above the pressure frame, and the cross grooves in the cross frame are aligned with the warp and weft threads in the screen above it. Then, the steel wires are pulled upward and passed through the support and twisted together to fix them, so that the middle part of the screen is tightened upward by each cross frame, reducing deformation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 A three-dimensional view of a linear screen surface pressing structure;

[0019] Figure 2 This is a connection diagram of the pressure frame and the tensioning structure;

[0020] Figure 3 This is a structural diagram of the pressure frame;

[0021] Figure 4 This is a bottom view of the frame.

[0022] Figure 5 This is a disassembled diagram of the screen frame and rubber strip;

[0023] Figure 6 This is a diagram showing the components of a tensioned structure.

[0024] Figure label:

[0025] 1. Screen frame; 101. Screw hole; 102. Spiral groove; 103. Groove one; 2. Pressure frame; 201. Bolt; 202. Spike; 203. Groove two; 3. Screen mesh; 4. Tensioning structure; 401. Support; 402. Cross frame; 403. Steel wire; 5. Rubber strip. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please see Figure 1-6 As shown, this utility model is a linear screen surface pressing structure, including a screen frame 1, a pressing frame 2, a screen mesh 3 and a tensioning structure 4. The pressing frame 2 is arranged above the screen frame 1, the screen mesh 3 is arranged between the screen frame 1 and the pressing frame 2, and the tensioning structures 4 are arranged at equal intervals above the pressing frame 2.

[0028] The screen frame 1 is installed at an angle inside the linear screen. The screen mesh 3 is laid on top of the screen frame 1, and then the pressing frame 2 is used to press it onto the screen mesh 3, pressing each side of the screen mesh 3 tightly. The tensioning structure 4 is used to help tighten the screen mesh 3 so that it will not dent or deform after long-term use.

[0029] The upper surface of the screen frame 1 is provided with a groove 103, and the upper surface of the screen frame 1 outside the groove 103 is also provided with a sharp groove 102. The lower surface of the pressure frame 2 is provided with a groove 203, and the lower surface of the pressure frame 2 outside the groove 203 is also provided with a spike 202; and the spike 202 passes through the screen 3 and pierces into the sharp groove 102.

[0030] A rubber strip 5 is pressed into both groove 103 and groove 203, and the rubber strip 5 is located above the screen 3. The screen 3 below the rubber strip 5 is pressed into groove 103 by the rubber strip 5.

[0031] After the screen 3 is laid on the screen frame 1, the rubber strip 5 is aligned with the groove 103 and the screen 3 is pressed in to initially press the side of the screen 3 to keep it stable. Then the pressing frame 2 is placed on the screen 3, and the spike 202 is aligned with the spike groove 102 and passes through the screen 3 to limit and press it, thereby keeping the screen 3 stable.

[0032] The upper surface of the screen frame 1 is also provided with screw holes 101. The number of bolts 201, which are equal to the number of screw holes 101, are inserted through the pressure frame 2. The tail end of the bolt 201 passes through the screen 3 and is screwed into the screw hole 101 below it.

[0033] Finally, pass the bolt 201 through the pressure frame 2 and the screen 3 until it is screwed into the screw hole 101 and locked, thus completing the installation of the screen frame 1 and the pressure frame 2 and the screen surface of the screen 3 is pressed and installed.

[0034] The cross-sectional areas of screen frame 1 and pressure frame 2 are the same.

[0035] The tensioning structure 4 includes a bracket 401 fixed in an inverted U-shape at the upper end of the pressure frame 2. A cross frame 402 is provided below the horizontal part of the bracket 401. The cross frame 402 is located below the screen 3, and the cross groove in the cross frame 402 is engaged with the warp and weft threads of the screen 3.

[0036] Eight steel wires 403 are fixed to the upper end of the cross frame 402, and the tops of all steel wires 403 pass through the horizontal part of the bracket 401 and are twisted and locked together.

[0037] The tensioning structure 4 is placed on the pressure frame 2. The cross groove in the cross frame 402 is aligned with the warp and weft threads in the screen 3 above it and inserted. Then the steel wire 403 is pulled upward until it passes through the bracket 401 and is twisted and fixed together, so that the middle part of the screen 3 is tensioned upward by each cross frame 402 to reduce the degree of deformation during use.

[0038] The specific working principle of this utility model is as follows: First, the screen frame 1 is installed at an angle inside the linear screen, and the screen mesh 3 is laid on top of the screen frame 1. The rubber strip 5 is aligned with the groove 103 and the screen mesh 3 is pressed in. The lower part of the rubber strip 5 also enters the groove 103, and the side of the screen mesh 3 is initially pressed. Then, the pressure frame 2 is placed on the screen mesh 3, and the groove 203 is matched with the position of the rubber strip 5. The pressure frame 2 is pressed down until the upper part of the rubber strip 5 enters the groove 203, and the spike 202 is aligned with the spike groove 102. The spike 202 passes through the screen mesh 3 and enters the spike groove 102, restricting the side of the screen surface of the screen mesh 3. Finally, the bolt 201 is passed through the pressure frame 2 and the screen mesh 3 until it is screwed into the screw hole 101 and locked, completing the pressing and installation of the screen frame 1, the pressure frame 2, and the screen surface of the screen mesh 3.

[0039] After the screen 3 is installed, the tensioning structure 4 is placed on the pressure frame 2. The cross groove in the cross frame 402 is aligned with the warp and weft threads in the screen 3 above it and inserted. Then the steel wire 403 is pulled upward until it passes through the bracket 401 and is twisted and fixed together, so that the middle part of the screen 3 is tensioned upward by each cross frame 402.

[0040] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A linear screen deck pressing structure, comprising a screen frame (1), a pressing frame (2), a screen mesh (3) and a tightening structure (4), characterized in that: A pressure frame (2) is provided above the sieve frame (1), a sieve mesh (3) is provided between the sieve frame (1) and the pressure frame (2), and a tensioning structure (4) is provided above the pressure frame (2) at equal intervals. The upper surface of the sieve frame (1) is provided with a groove (103), and the upper surface of the sieve frame (1) outside the groove (103) is also provided with a sharp groove (102). The lower surface of the pressure frame (2) is provided with a groove (203), and the lower surface of the pressure frame (2) outside the groove (203) is also provided with a spike (202); and the spike (202) passes through the sieve (3) and pierces into the sharp groove (102).

2. The linear screen deck compression structure of claim 1, wherein: A rubber strip (5) is pressed into both groove one (103) and groove two (203), and the rubber strip (5) is located above the screen (3). The screen (3) below the rubber strip (5) is pressed into groove one (103) by the rubber strip (5).

3. The linear screen surface pressing structure according to claim 1, characterized in that: The upper surface of the sieve frame (1) is also provided with screw holes (101). The pressure frame (2) is connected in a through manner with a number of bolts (201) equal to the number of screw holes (101). The tail end of the bolt (201) passes through the sieve (3) and is screwed into the screw hole (101) below it.

4. The linear screen surface pressing structure according to claim 1, characterized in that: The cross-sectional areas of the sieve frame (1) and the pressure frame (2) are the same.

5. The linear screen surface pressing structure according to claim 1, characterized in that: The tensioning structure (4) includes a bracket (401) fixed in an inverted U-shape at the upper end of the pressure frame (2). A cross frame (402) is provided below the horizontal part of the bracket (401). The cross frame (402) is located below the screen (3), and the cross groove in the cross frame (402) is engaged with the warp and weft threads of the screen (3).

6. The linear screen surface pressing structure according to claim 5, characterized in that: The upper end of the cross frame (402) is fixed with eight steel wires (403), and the top of all the steel wires (403) passes through the horizontal part of the bracket (401) and is twisted and locked together.

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