Straight line screen for uniform distribution of material

Abstract

This utility model discloses a linear screen for uniform fabric distribution. The screening mechanism includes a screening box. Mounting rails are symmetrically fixedly connected to the upper and lower ends of the inner wall of the screening box. A sliding frame is slidably connected to the inner side of the mounting rails on the same horizontal plane. A hollow positioning shaft is symmetrically fixedly connected to one side of the sliding frame. The outer wall of the hollow positioning shaft is inserted into the interior of the mounting rail. Several support frames are movably mounted and supported on the bottom inner side of the sliding frame. Screens are fixedly connected to the inner side of each support frame. A positioning rod is slidably connected through one side of the inner wall of the support frame. The end of the positioning rod is inserted into the interior of the hollow positioning shaft. A slider is fixedly connected to the outer wall of the middle part of the positioning rod. A push shaft is fixedly connected to the top of the slider. The outer wall of the push shaft is slidably connected through the surface of the support frame. The sliding frame can be removed by opening the inspection door on the side of the screening box. When some screens are worn, the screens can be replaced by disassembling the support frames.

Description

Technical Field

[0001] This utility model relates to the field of linear screen technology, specifically to a linear screen that distributes material evenly. Background Technology

[0002] Linear vibrating screens utilize a vibrating motor as the vibration source, causing the material to be thrown up on the screen mesh while simultaneously moving forward in a straight line. The material enters the feed inlet of the screening machine evenly from the feeder, and through multiple layers of screens, it produces several specifications of oversize and undersize materials, which are discharged from their respective outlets. It features low energy consumption, high output, simple structure, easy maintenance, a fully enclosed structure with no dust spillage, and automatic discharge, making it ideal for assembly line operations.

[0003] To extend the material's trajectory on the screen surface and increase the contact time with the screen holes, allowing fine particles more opportunities to pass through the screen, the internal screen plates of conventional linear screens are usually set to be relatively long. However, after long-term use, the screen plate surface is prone to wear or blockage. The screen space in the recessed areas becomes smaller, and materials tend to accumulate in these areas. The screen in the raised areas can change the material's trajectory, and some materials may be ejected to the screen edge or other areas, resulting in uneven material distribution and flow deviation. Moreover, replacing the screen plate usually requires replacing the entire screen, which is not economical. Therefore, a linear screen with uniform material distribution is proposed to solve the above problems. Utility Model Content

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A linear screen for uniform fabric distribution includes a screening mechanism, and a vibration mechanism is provided below the screening mechanism, the vibration mechanism including a drive motor.

[0006] The screening mechanism includes a screening box. The upper and lower ends of the inner wall of the screening box are symmetrically fixedly connected to mounting rails. The inner sides of the mounting rails located on the same horizontal plane are slidably connected to a sliding frame. A hollow positioning shaft is symmetrically fixedly connected to one side of the sliding frame. The outer wall of the hollow positioning shaft is inserted into the inside of the mounting rail.

[0007] The sliding frame has several support frames mounted on its inner bottom. Each support frame has a screen fixedly connected to its inner side. A positioning rod is slidably connected through one side of the inner wall of the support frame. The end of the positioning rod is inserted into the hollow positioning shaft. A slider is fixedly connected to the outer wall of the middle part of the positioning rod. A push shaft is fixedly connected to the top of the slider. The outer wall of the push shaft is slidably connected through the surface of the support frame.

[0008] As a further embodiment of this utility model: a filling block is engaged with the top surface of the support frame and located outside the push shaft, the inner wall of the filling block abuts against the push shaft, and an isolation plate is fixedly connected to the top surface of the support frame and located above the push shaft.

[0009] As a further embodiment of this utility model: a sealing cover is fixedly installed on the top of the screening box by bolts, and a feed inlet is fixedly and continuously connected to one side of the top surface of the sealing cover. An observation port is also provided on the top surface of the sealing cover, and support legs are fixedly installed on both sides of the bottom surface of the screening box.

[0010] As a further embodiment of this utility model: the overall length direction of the screening box forms an angle of ° with the ground, and a first discharge pipe is connected and fixedly connected to the upper end of the lower side of the screening box, a second discharge pipe is connected and fixedly connected to the outer wall of the screening box below the first discharge pipe, and a third discharge pipe is connected and fixedly connected to the outer wall of the screening box below the second discharge pipe.

[0011] As a further embodiment of this utility model: the high side of the screening box is hinged with an inspection door, the lower end of the inspection door is fixedly connected to the screening box by bolts, and the side of the inspection door abuts against both sliding frames.

[0012] As a further embodiment of this utility model: the vibration mechanism includes a motor base, the top of which is fixedly installed with the middle of the bottom surface of the screening box, and the bottom surface of the motor base is also fixedly installed with a drive motor. The drive motor is located outside the output shaft and is fixedly connected to an isolation cover by screws.

[0013] As a further embodiment of this utility model: the output shaft of the drive motor is provided with two eccentric blocks, one of which is fixedly connected to the output shaft of the drive motor, and the other is rotatably connected to the output shaft of the drive motor. The surfaces of the two eccentric blocks are provided with positioning holes arranged at equal intervals, and the two eccentric blocks are fixedly connected by bolts and nuts passing through the positioning holes.

[0014] The beneficial effects of this utility model are:

[0015] (1) The present invention supports multiple support frames with screens installed by a sliding frame. By opening the inspection door on the side of the screening box, the sliding frame can be moved out for easy inspection of the screens. When some screens are worn, the support frame can be unlocked by pushing the push shaft at the top of the corresponding support frame. The screens can be replaced by disassembling the support frame, ensuring uniform material distribution of the screen inside the linear screen. In addition, it saves money.

[0016] (2) The eccentric blocks are driven to rotate by the motor below the screening box, thereby causing the screening box to vibrate above the support legs. Two eccentric blocks are set, and one of the eccentric blocks can rotate around the output shaft of the motor, thereby adjusting the included angle between the eccentric blocks. The smaller the included angle between the two eccentric blocks, that is, the smaller the overlapping surface of the two eccentric blocks, the smaller the excitation force brought by the motor when starting. The smaller the included angle between the two eccentric blocks, the larger the included angle, that is, the larger the overlapping surface of the two eccentric blocks, the greater the excitation force. By adjusting the magnitude of the excitation force on the screening box, damage to the filter screen structure can be avoided, and the material screening efficiency can be guaranteed. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure above the screening box in this utility model;

[0020] Figure 3 This is a cross-sectional view of the screening box in this utility model;

[0021] Figure 4 This is a top view of the sliding frame structure in this utility model;

[0022] Figure 5 This is a schematic diagram of the mounting rail structure viewed from a top angle in this utility model;

[0023] Figure 6 This is a top view of the support frame structure in this utility model;

[0024] Figure 7 This is a side view of the isolation plate in this utility model;

[0025] Figure 8 This is a top-view sectional view of the support frame structure in this utility model;

[0026] Figure 9 This is a schematic diagram of the internal structure of the isolation cover in this utility model;

[0027] Figure 10 This is a schematic diagram of the overall structure of the eccentric block in this utility model.

[0028] In the diagram: 1. Screening mechanism; 101. Screening box; 102. Sealing cover; 103. Feed inlet; 104. Observation port; 105. First discharge pipe; 106. Second discharge pipe; 107. Third discharge pipe; 108. Inspection door; 109. Mounting rail; 110. Sliding frame; 111. Hollow positioning shaft; 112. Support frame; 113. Screen; 114. Positioning rod; 115. Sliding block; 116. Push shaft; 117. Filling block; 118. Isolation plate; 119. Support leg; 2. Vibration mechanism; 201. Motor base; 202. Drive motor; 203. Isolation cover; 204. Eccentric block; 205. Positioning hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figure 1-10 As shown, a linear vibrating screen for uniform fabric distribution includes a screening mechanism 1. A vibration mechanism 2 is located below the screening mechanism 1, and the vibration mechanism 2 includes a drive motor 202. The screening mechanism 1 includes a screening box 101. Mounting rails 109 are symmetrically fixedly connected to the upper and lower ends of the inner wall of the screening box 101. A sliding frame 110 is slidably connected to the inner side of the mounting rails 109, which are located on the same horizontal plane. A hollow positioning shaft 111 is symmetrically fixedly connected to one side of the sliding frame 110. The outer wall of the hollow positioning shaft 111 is flush with the inner wall of the mounting rails 109. The sliding frame 110 has several support frames 112 movably mounted on its inner bottom side. Each support frame 112 has a screen 113 fixedly connected to its inner side. A positioning rod 114 is slidably connected through one side of the inner wall of each support frame 112. The end of the positioning rod 114 is inserted into the hollow positioning shaft 111. A slider 115 is fixedly connected to the outer wall of the middle part of the positioning rod 114. A push shaft 116 is fixedly connected to the top of the slider 115. The outer wall of the push shaft 116 is slidably connected through the surface of the support frame 112. Figures 5-6 , Figure 8 As shown, when the sides of adjacent support frames 112 abut against each other, the positioning rod 114 is moved, and the end of the positioning rod 114 extends out and inserts into the interior of the adjacent support frame 112, thereby connecting each support frame 112 and avoiding misalignment between the support frames 112.

[0031] A filling block 117 is engaged with the top surface of the support frame 112, located outside the push shaft 116. The inner wall of the filling block 117 abuts against the push shaft 116. A partition plate 118 is fixedly connected to the top surface of the support frame 112, above the push shaft 116. Figure 6 As shown, the filler block 117 is made of rubber, and the filler block 117 can be squeezed and inserted into the gap on the outside of the push shaft 116, thereby preventing the push shaft 116 from shifting significantly due to shaking. Figure 5 As shown, in order to facilitate the disassembly of a single support frame 112, only one filler block 117 needs to be set in each row of support frames 112.

[0032] A sealing cover 102 is bolted to the top of the screening box 101. A feed inlet 103 is fixed and connected to one side of the top surface of the sealing cover 102. An observation port 104 is also provided on the top surface of the sealing cover 102. Support legs 119 are fixedly installed on both sides of the bottom surface of the screening box 101. The overall length of the screening box 101 forms a 5° angle with the ground, and a first discharge pipe 105 is fixedly connected to the upper end of the lower side of the screening box 101. A second discharge pipe 106 is fixedly connected to the outer wall of the screening box 101, located below the first discharge pipe 105. A third discharge pipe 107 is fixedly connected to the outer wall of the screening box 101, located below the second discharge pipe 106. An inspection door 108 is hinged to the high side of the screening box 101. The lower end of the inspection door 108 is fixedly connected to the screening box 101 by bolts. The side of the inspection door 108 abuts against both sliding frames 110. Figure 3 As shown, when the inspection door 108 is closed, it presses the sliding bracket 110 against the inside of the mounting rail 109, thereby preventing the sliding bracket 110 from shifting along the inside of the mounting rail 109.

[0033] The vibration mechanism 2 includes a motor base 201. The top of the motor base 201 is fixedly installed to the center of the bottom surface of the screening box 101. The bottom surface of the motor base 201 is also fixedly installed to a drive motor 202. The drive motor 202 is located outside the output shaft and is fixedly connected to an isolation cover 203 by screws. The output shaft of the drive motor 202 is provided with two eccentric blocks 204. One eccentric block 204 is fixedly connected to the output shaft of the drive motor 202, and the other eccentric block 204 is rotatably connected to the output shaft of the drive motor 202. Positioning holes 205 are evenly spaced on the surface of both eccentric blocks 204. The two eccentric blocks 204 are fixedly connected to each other by bolts and nuts passing through the positioning holes 205. Figures 9-10 As shown, the smaller the angle between the two eccentric blocks, that is, the smaller the overlapping surface of the two eccentric blocks, the smaller the excitation force; the smaller the angle between the two eccentric blocks, the larger the angle, the larger the overlapping surface of the two eccentric blocks, and the greater the excitation force.

[0034] The working principle of this utility model:

[0035] When the drive motor 202 is started, it drives the eccentric block 204 to rotate. The centrifugal force generated by the rotation drives the screening box 101 to vibrate under the buffer of the spring structure above the support leg 119. The material is fed in through the feed port 103, so that the material is coarsely screened on the uppermost screen 113. The smaller particles after screening pass through the upper screen 113 and then contact the lower screen 113 for fine screening. The coarsely screened material is output through the second discharge pipe 106, while the finely screened material is output through the third discharge pipe 107. The larger particles are output through the first discharge pipe 105. Next, after removing the isolation cover 203, one side of the eccentric block 204 can be rotated, thereby changing the overlapping area between the two eccentric blocks 204. When the two eccentric blocks 204 are completely overlapped and the included angle is equal to 0 degrees, the excitation force is the maximum, and vice versa. The two eccentric blocks 204 are locked by connecting the nut after the bolt passes through the positioning hole 205.

[0036] Secondly, after opening the inspection door 108, the sliding frame 110 can be pulled out along the mounting rail 109. After pulling out the filling block 117 above the support frame 112 near the inspection door 108, the push shaft 116 on the side of the worn screen 113 is moved, thereby causing the positioning rod 114 to separate from the inside of other support frames 112. When the positioning rod 114 moves, it also pushes other positioning rods 114 to separate from the support frame 112 outside the worn screen 113. Then the support frame 112 is locked in place. Push the isolation plate 118 upward to remove the support frame 112 and the worn screen 113 inside for replacement.

[0037] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A linear screen for uniform fabric distribution, comprising a screening mechanism (1), wherein a vibration mechanism (2) is provided below the screening mechanism (1), and the vibration mechanism (2) comprises a drive motor (202); Its features are, The screening mechanism (1) includes a screening box (101). The upper and lower ends of the inner wall of the screening box (101) are symmetrically fixedly connected with mounting rails (109). The inner sides of the mounting rails (109) located on the same horizontal plane are slidably connected with a sliding frame (110). A hollow positioning shaft (111) is symmetrically fixedly connected to one side of the sliding frame (110). The outer wall of the hollow positioning shaft (111) is inserted into the inside of the mounting rail (109). The sliding frame (110) has several support frames (112) mounted on its inner bottom. Each support frame (112) has a screen (113) fixedly connected to its inner side. A positioning rod (114) is slidably connected through one side of the inner wall of the support frame (112). The end of the positioning rod (114) is inserted into the hollow positioning shaft (111). A slider (115) is fixedly connected to the outer wall of the middle part of the positioning rod (114). A push shaft (116) is fixedly connected to the top of the slider (115). The outer wall of the push shaft (116) is slidably connected through the surface of the support frame (112).

2. The linear screen for uniform fabric distribution according to claim 1, characterized in that, A filling block (117) is engaged with the top surface of the support frame (112) and located outside the push shaft (116). The inner wall of the filling block (117) abuts against the push shaft (116). An isolation plate (118) is fixedly connected to the top surface of the support frame (112) and above the push shaft (116).

3. A linear screen for uniform fabric distribution according to claim 2, characterized in that, The top of the screening box (101) is fixedly installed with a sealing cover (102) by bolts. The top surface of the sealing cover (102) is fixedly connected to a feed inlet (103). The top surface of the sealing cover (102) is also provided with an observation port (104). Support legs (119) are fixedly installed on both sides of the bottom surface of the screening box (101).

4. A linear screen for uniform fabric distribution according to claim 3, characterized in that, The screening box (101) is at a 5° angle to the ground along its overall length. A first discharge pipe (105) is connected to the upper end of the lower side of the screening box (101). A second discharge pipe (106) is connected to the outer wall of the screening box (101) below the first discharge pipe (105). A third discharge pipe (107) is connected to the outer wall of the screening box (101) below the second discharge pipe (106).

5. A linear screen for uniform fabric distribution according to claim 4, characterized in that, Furthermore, the screening box (101) is hinged to the high side with an inspection door (108), the lower end of which is fixedly connected to the screening box (101) by bolts, and the side of the inspection door (108) abuts against both sliding frames (110).

6. A linear screen for uniform fabric distribution according to claim 1, characterized in that, The excitation mechanism (2) includes a motor base (201), the top of which is fixedly installed in the middle of the bottom surface of the screening box (101), and the bottom surface of the motor base (201) is also fixedly installed with a drive motor (202). The drive motor (202) is located outside the output shaft and is fixedly connected to an isolation cover (203) by screws.

7. A linear screen for uniform fabric distribution according to claim 6, characterized in that, The output shaft of the drive motor (202) is provided with two eccentric blocks (204). One of the eccentric blocks (204) is fixedly connected to the output shaft of the drive motor (202), and the other eccentric block (204) is rotatably connected to the output shaft of the drive motor (202). The surfaces of the two eccentric blocks (204) are provided with positioning holes (205) arranged at equal intervals. The two eccentric blocks (204) are fixedly connected to each other by bolts and nuts passing through the positioning holes (205).

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