Automatic material blocking device

Abstract

The utility model discloses an automatic material blocking device, which belongs to the technical field of material blocking devices and comprises: an installation rectangular frame fixedly connected to a roller screening machine, wherein the installation rectangular frame is connected with a plurality of material blocking plates having the same number as the screening rollers at equal intervals near the side walls of the screening rollers of the roller screening machine; the material blocking plate of the utility model is provided with an arc groove and there is a small gap between the screening rollers, and at the same time, an arc installation groove is arranged in the material blocking plate, and rolling balls in contact with the surface of the screening roller are arranged at equal intervals in the arc installation groove; when blocking the material, since there is only a small gap between the material blocking plate and the screening roller, the material with a volume larger than the small gap can be directly prevented from running out; if the material with a volume smaller than the small gap runs into the arc installation groove, the material can be driven by the rolling balls to roll to the bottom end of the arc installation groove for discharge, which can effectively prevent the material from leaking out of the working surface of the screening roller; at the same time, there is rolling friction between the balls and the screening roller, and the noise generated is small, thereby improving the use effect of the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of material blocking devices, and in particular relates to an automatic material blocking device. Background Art

[0002] A roller screening machine refers to an efficient and accurate material screening equipment that screens materials based on the rotation of rollers. At present, the roller screening machine produced by Qian'an Chunwanda Machinery Equipment Co., Ltd. has a screening roller that is close to the top of the frame, which causes some materials to leak out of the working surface of the screening roller when the screening roller is screening materials, affecting the screening effect and efficiency of the materials. In order to avoid such things from happening, an automatic material blocking device can be installed on the roller screening machine.

[0003] Patent No. 201520123397.3 discloses a material baffle plate for a roller screening machine, which is composed of a frame installed on the roller screening machine, a plurality of rubber baffles installed on the frame by bolts, and a brush installed on the inner wall of an arc-shaped groove opened at the bottom of the rubber baffle and adapted to the screening roller. When the material baffle plate blocks material, the brush and the rubber baffle cooperate to block the material, thereby reducing the occurrence of material leakage outside the working surface of the screening roller.

[0004] The inventor of the present application found that the above-mentioned existing material baffle plate blocks material leakage by contacting the brush with the surface of the screening roller. In actual application, if the material weight is large and the brush cannot block it, this method still cannot solve the problem of material leakage well, and the screening roller and the brush will make abnormal friction noise during the contact process, which reduces the use effect of the device. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides an automatic material blocking device, which has the characteristics of improving the use effect of the device and expanding the use range of the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic material blocking device, comprising: a mounting rectangular frame fixedly connected to a roller screening machine, the mounting rectangular frame being connected with a plurality of material blocking plates having the same number as the screening rollers at equal intervals near the side walls of the screening rollers of the roller screening machine, an arcuate groove located outside the screening roller and having a gap between the screening rollers is formed at the bottom end of the material blocking plate, an arcuate mounting groove connected to the arcuate groove is formed inside the material blocking plate at the outside of the arcuate groove, a plurality of fixed shafts are fixedly connected with equal intervals inside the arcuate mounting groove, and balls in contact with the screening rollers are rollingly connected to the fixed shafts through an open hole sleeve connection.

[0007] Furthermore, an adjustable mechanism is installed between the multiple material baffle plates and the mounting rectangular frame, and the adjustable mechanism includes a sliding shaft fixedly connected to the inside of the mounting rectangular frame and a sliding block fixed to the top of the side wall of the material baffle plate facing the mounting rectangular frame, the sliding block is movably connected to the sliding shaft by means of an open hole sleeve, and a clamping positioning mechanism is installed below the hole on the sliding block for clamping the bottom end of the mounting rectangular frame.

[0008] Furthermore, the clamping and positioning mechanism includes an assembly groove which is opened inside the sliding block and is located below the hole and has an opening at the bottom, and two clamping plates which are symmetrically placed on the mounting rectangular frame towards and away from the screening roller. A double-headed screw with a handle is placed inside the assembly groove. The end of the double-headed screw with the handle away from the handle is connected to the inner wall of the sliding block towards the screening roller through a bearing. The end of the double-headed screw with the handle near the handle extends through the sliding block to the outside. The double-headed screw with the handle is connected to the through section of the sliding block through a bearing. The double-headed screw with the handle is symmetrically connected to two movable blocks which are respectively fixed to the top ends of adjacent clamping plates through a transmission nut.

[0009] Furthermore, the clamping plate is fixedly connected with a rubber pad near the side wall of the mounting rectangular frame.

[0010] Furthermore, the baffle plate and the screening roller are vertically provided with two receiving grooves symmetrically arranged on both sides, an extension plate is placed inside the receiving groove, and the extension plate is connected to the side wall of the baffle plate and the side wall of the receiving groove by an elastic mechanism.

[0011] Furthermore, the elastic mechanism includes a plurality of connecting springs placed at equal intervals from top to bottom between the extension plate and the receiving groove, and two ends of the connecting springs are respectively fixedly connected to the extension plate and the receiving groove near the side wall of the baffle plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a small gap between the material baffle plate and the screening roller, and at the same time, an arc-shaped installation groove is arranged in the material baffle plate, and rolling balls in contact with the surface of the screening roller are arranged at equal intervals in the arc-shaped installation groove. When blocking the material, since there is only a small gap between the material baffle plate and the screening roller, the material with a volume larger than the small gap can be directly prevented from running out. If the material with a volume smaller than the small gap runs into the arc-shaped installation groove, the material can be driven by the rolling balls to roll to the bottom of the arc-shaped installation groove for discharge, which can effectively prevent the material from leaking out of the working surface of the screening roller. At the same time, there is rolling friction between the balls and the screening roller, and the noise generated is small, thereby improving the use effect of the device.

[0014] 2. The distance between adjacent material baffles of the utility model can be adjusted according to the distance between the screening rollers of the roller screening machine, and can be adapted to a variety of roller screening machines, thereby expanding the use range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a vertical cross-sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional view of the utility model;

[0019] Figure 5 It is a cross-sectional view of another position of the utility model;

[0020] Figure 6 For this utility model Figure 5 Enlarged view of point B in the middle;

[0021] Figure 7 This is a schematic diagram of the utility model being assembled on a roller screening machine;

[0022] In the figure: 1. Install rectangular frame; 2. Baffle plate; 3. Connecting spring; 4. Extension plate; 5. Storage slot; 6. Ball; 7. Fixed shaft; 8. Arc-shaped installation slot; 9. Arc-shaped slot; 10. Sliding shaft; 11. Sliding block; 12. Clamping plate; 13. Assembly slot; 14. Double-headed screw with handle; 15. Movable block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1-7 The utility model provides the following technical solutions: an automatic material blocking device, comprising: a mounting rectangular frame 1 fixedly connected to a roller screening machine, a plurality of material blocking plates 2 having the same number as the screening rollers are connected to the mounting rectangular frame 1 at equal intervals near the side wall of the screening roller of the roller screening machine, an arc groove 9 located outside the screening roller and having a gap between the screening rollers is formed at the bottom end of the material blocking plate 2, an arc mounting groove 8 communicating with the arc groove 9 is formed inside the material blocking plate 2 and located outside the arc groove 9, a plurality of fixed shafts 7 are fixedly connected at equal intervals inside the arc mounting groove 8, and a ball 6 in contact with the screening roller is rollingly connected to the fixed shaft 7 through an open hole sleeve connection.

[0026] See attached Figure 1-3 When the device is installed, the rectangular frame 1 is fixedly connected to the roller screening machine so that the multiple material baffles 2 on the rectangular frame 1 are located above the multiple screening rollers. At this time, there is a small gap between the arc groove 9 on the material baffle plate 2 and the screening roller, and the ball 6 on the material baffle plate 2 is in contact with the screening roller; when the device is blocking the material, the material baffle plate 2 blocks the material with a volume larger than the small gap from continuing to run out, and prevents such material from leaking out of the working surface of the screening roller. If the material with a volume smaller than the small gap enters the arc-shaped mounting groove 8 through the gap, the rolling ball 6 drives such material to roll to the bottom of the arc-shaped mounting groove 8 for discharge, and prevents such material from leaking out of the working surface of the screening roller. At the same time, there is rolling friction between the ball 6 and the screening roller, and the noise generated is small, thereby improving the use effect of the device.

[0027] Embodiment 2

[0028] The difference between this embodiment and the first embodiment is that:

[0029] Specifically, an adjustable mechanism is installed between the multiple baffle plates 2 and the mounting rectangular frame 1, and the adjustable mechanism includes a sliding shaft 10 fixedly connected to the inside of the mounting rectangular frame 1 and a sliding block 11 fixedly connected to the top of the side wall of the baffle plate 2 facing the mounting rectangular frame 1. The sliding block 11 is movably connected to the sliding shaft 10 by means of an open hole sleeve connection, and a clamping positioning mechanism is installed below the hole on the sliding block 11 for clamping the bottom end of the mounting rectangular frame 1.

[0030] See attached Figure 4-6 If the gap between adjacent screening rollers of the roller screening machine does not match the gap between adjacent arc grooves 9 of the device, the clamping and positioning mechanism is loosened to install the rectangular frame 1, and the sliding block 11 on the baffle plate 2 is made to slide on the sliding shaft 10. The sliding block 11 drives the connected baffle plate 2 to slide until the baffle plate 2 is adjusted to a suitable position, and the clamping and positioning mechanism is clamped to install the rectangular frame 1 to complete the position adjustment of the baffle plate 2, and then the assembly can be performed according to the above method.

[0031] Specifically, the clamping and positioning mechanism includes an assembly groove 13 which is opened inside the sliding block 11 and is located below the hole and has an opening at the bottom end, and two clamping plates 12 which are symmetrically placed on the mounting rectangular frame 1 toward and away from the screening roller. A double-headed screw rod 14 with a handle in different directions is placed inside the assembly groove 13. The double-headed screw rod 14 with a handle is connected to the inner wall of the sliding block 11 toward the screening roller through a bearing at the end away from the handle. The double-headed screw rod 14 with a handle passes through the sliding block 11 near the handle end and extends to the outside. The double-headed screw rod 14 with a handle is connected to the through section of the sliding block 11 through a bearing. The double-headed screw rod 14 with a handle is symmetrically connected to the double-headed screw rod 14 with a handle through a transmission nut and has two movable blocks 15 which are respectively fixed to the top ends of adjacent clamping plates 12.

[0032] See attached Figure 5-6When the clamping and positioning mechanism is working, the handle is rotated forward and reversely, and the handle drives the double-headed screw 14 with the handle to rotate forward and reversely. During the forward and reverse rotation of the double-headed screw 14 with the handle, the two movable blocks 15 move toward or away from each other on the double-headed screw 14 with the handle, and the two movable blocks 15 drive the connected clamping plates 12 to move in the same direction, thereby realizing the clamping or loosening of the installed rectangular frame 1 to complete the clamping and positioning function.

[0033] Specifically, the clamping plate 12 is fixedly connected with a rubber pad close to the side wall of the mounting rectangular frame 1 .

[0034] Specifically, two receiving grooves 5 are symmetrically opened on both sides perpendicular to the material baffle plate 2 and the screening roller, and an extension plate 4 is placed inside the receiving groove 5. The extension plate 4 is connected to the side wall of the material baffle plate 2 and the side wall of the receiving groove 5 is connected to the side wall of the material baffle plate 2 through an elastic mechanism.

[0035] See attached Figure 3 When the gap between adjacent material baffle plates 2 is adjusted, the extension plates 4 in the side walls of the adjacent material baffle plates 2 close to each other move outward under the reset force of the connected elastic mechanism until the two extension plates 4 of the side walls of the adjacent material baffle plates 2 close to each other stop abutting each other, which can make up for the gap caused by the adjustment, prevent the material from leaking out of the working surface of the screening roller from the gap, and improve the material blocking effect of the device.

[0036] Specifically, the elastic mechanism includes a plurality of connecting springs 3 placed at equal intervals from top to bottom between the extension plate 4 and the receiving groove 5 , and both ends of the connecting springs 3 are respectively fixed to the extension plate 4 and the receiving groove 5 near the side wall of the baffle plate 2 .

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic material blocking device, characterized in that: include: A mounting rectangular frame (1) is fixedly connected to a roller screening machine, wherein the mounting rectangular frame (1) is connected to a plurality of material baffles (2) at equal intervals near the side wall of a screening roller of the roller screening machine, the same number as the screening rollers, the bottom end of the material baffles (2) is provided with an arc groove (9) located outside the screening roller and having a gap between the screening rollers, the inside of the material baffles (2) is provided with an arc mounting groove (8) connected to the arc groove (9) and located outside the arc groove (9), the inside of the arc mounting groove (8) is fixedly connected to a plurality of fixed shafts (7) at equal intervals, and the fixed shafts (7) are rollingly connected to balls (6) in contact with the screening rollers by means of an open hole sleeve connection.

2. The automatic material blocking device according to claim 1, characterized in that: An adjustable mechanism is installed between the plurality of the baffle plates (2) and the mounting rectangular frame (1), the adjustable mechanism comprising a sliding shaft (10) fixedly connected to the inside of the mounting rectangular frame (1) and a sliding block (11) fixedly connected to the top of the side wall of the baffle plate (2) facing the mounting rectangular frame (1), the sliding block (11) being movably connected to the sliding shaft (10) by means of an open hole sleeve connection, and a clamping positioning mechanism for clamping the bottom end of the mounting rectangular frame (1) is installed on the sliding block (11) below the hole.

3. The automatic material blocking device according to claim 2, characterized in that: The clamping and positioning mechanism comprises an assembly groove (13) which is opened inside the sliding block (11) and is located below the hole and has an open bottom end, and two clamping plates (12) which are symmetrically placed on the sides of the mounting rectangular frame (1) facing and away from the screening roller. A double-headed screw rod (14) with a handle is placed inside the assembly groove (13). The double-headed screw rod (14) with a handle is connected to the inner wall of the sliding block (11) facing the screening roller through a bearing at the end away from the handle. The double-headed screw rod (14) with a handle passes through the sliding block (11) near the handle end and extends to the outside. The double-headed screw rod (14) with a handle is connected to the through section of the sliding block (11) through a bearing. The double-headed screw rod (14) with a handle is symmetrically connected to two movable blocks (15) respectively fixed to the top ends of adjacent clamping plates (12) through a transmission nut.

4. The automatic material blocking device according to claim 3, characterized in that: The clamping plate (12) is fixedly connected with a rubber pad near the side wall of the mounting rectangular frame (1).

5. The automatic material blocking device according to claim 1, characterized in that: The baffle plate (2) is symmetrically provided with two receiving grooves (5) on both sides perpendicular to the screening roller, and an extension plate (4) is placed inside the receiving groove (5). The extension plate (4) is connected to the side wall of the baffle plate (2) and the side wall of the receiving groove (5) close to the baffle plate (2) through an elastic mechanism.

6. The automatic material blocking device according to claim 5, characterized in that: The elastic mechanism comprises a plurality of connecting springs (3) which are placed at equal intervals from top to bottom between the extension plate (4) and the receiving groove (5), and the two ends of the connecting springs (3) are respectively fixedly connected to the extension plate (4) and the side wall of the receiving groove (5) close to the material blocking plate (2).

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