Thickness screening device

Abstract

The utility model discloses a thickness screening device, which relates to the technical field of vibrating trays and comprises a spiral trough on a vibrating tray, and a material distributing and guiding plate is mounted on the spiral trough and positioned in a trough of the spiral trough. A gap larger than the material thickness and smaller than two times of the material thickness exists between the bottom of the material distributing and guiding plate and the bottom of the spiral material groove; a discharging inclined wall is formed on the upper portion of the material distributing and guiding plate, and the inclination direction of the discharging inclined wall is opposite to the inclination direction of the spiral material groove. According to the multi-layer material screening and returning device, the good screening and returning effects are achieved through the arrangement of the material distributing and guiding plate, the stable screening effect can be achieved when the material distributing and guiding plate is adopted for screening, screening, material guiding and material returning can be integrated, the good multi-layer material screening and returning effects are achieved, the screening effect is good, and the screening effect is good. And the device can be assembled on any existing vibration disc for use, the structure of the existing vibration disc does not need to be greatly changed, and the device is more suitable for popularization and use.

Description

Technical Field

[0001] This utility model relates to the field of vibrating feeder technology, and in particular to a thickness screening device. Background Technology

[0002] Vibratory feeders come in various structures, including those that can screen materials based on thickness.

[0003] A search revealed a rubber ring thickness screening device in patent document CN218191070U. The device includes a vibratory plate for holding the rubber ring, with a spiral channel inside. The rubber ring moves along the spiral channel during operation. The spiral channel includes a bottom plate for supporting the rubber ring and side walls on both sides of the bottom plate. One side wall has a discharge port extending through it to allow the rubber ring to exit the spiral channel. The discharge port extends upwards from the bottom plate to a height equal to the discharge port height. An air blowing mechanism is located on the side of the spiral channel opposite the discharge port to blow air towards the discharge port to expel the rubber ring.

[0004] Based on the above search and combined with existing technology, it was found that although existing thickness screening devices can achieve the screening function according to thickness, the vibrating plate itself and the material are in a state of relative motion. Therefore, the position of the material and the blowing mechanism is relatively changing, which makes the blowing mechanism prone to blowing the material to the side. Its screening effect is not stable and reliable enough. Therefore, a thickness screening device is needed. Utility Model Content

[0005] The purpose of this application is to provide a thickness screening device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a thickness screening device, including a spiral trough on a vibrating plate, a material distribution guide plate installed on the spiral trough, the material distribution guide plate being located inside the trough of the spiral trough, and a gap greater than the material thickness and less than twice the material thickness existing between the bottom of the material distribution guide plate and the bottom of the spiral trough.

[0007] A feeding inclined wall is formed on the upper part of the feeding guide plate. The inclination direction of the feeding inclined wall is opposite to the inclination direction of the spiral feed trough and is inclined towards the inside of the vibrating plate hopper.

[0008] The upper part of the material distribution guide plate is also formed with a guide inclined wall. The guide inclined wall is inclined in the opposite direction to the movement direction of the material, and a material distribution part is formed on the side of the guide inclined wall facing the material direction. The guide inclined wall and the discharge inclined wall form intersecting edges on the upper part of the material distribution guide plate. The intersecting edges of the guide inclined wall and the discharge inclined wall extend diagonally across the two opposite corners of the material distribution guide plate.

[0009] The occupied area of the discharging inclined wall gradually increases in the direction of material movement, and the occupied area of the material guiding inclined wall gradually decreases in the direction of material movement.

[0010] Preferably, the side of the material distributing and guiding plate abutting against the inner side of the spiral chute is fixed with a stud, the stud penetrates through the outer side of the spiral chute, and a knob nut is screwed on the stud, and the stud is frictionally fixed with the spiral chute when the knob nut is tightened.

[0011] A friction increasing gasket is further sleeved on the stud, and the friction increasing gasket is located between the knob nut and the outer side of the spiral chute, and the side of the friction increasing gasket abutting against the outer side of the spiral chute.

[0012] Preferably, a long sliding hole is formed in the spiral chute, the long sliding hole vertically extends along the outer side of the spiral chute, the stud slidingly penetrates through the long sliding hole, and the outer diameter of the friction increasing gasket is greater than the width of the long sliding hole.

[0013] Preferably, a material blocking plate is integrally formed on the side of the material distributing and guiding plate where the material movement direction is consistent, the material blocking plate vertically extends, a back baffle is further integrally formed on the side of the material blocking plate close to the outer side of the spiral chute, the back baffle also vertically extends, and the thickness of the back baffle is less than the thickness of the material.

[0014] Preferably, a transition protrusion upwardly and outwardly protruding is integrally formed at the joint of the material distributing and guiding plate and the material blocking plate, and the bottom surface of the transition protrusion intersects with the discharging inclined wall.

[0015] An arc-shaped narrow hole vertically penetrating through the material distributing and guiding plate is further formed in the material distributing and guiding plate, the width of the arc-shaped narrow hole is less than the thickness of the material, and the arc-shaped narrow hole extends in an S-shaped curve, and the thickness of the widest bending part of the arc-shaped narrow hole is also less than the thickness of the material.

[0016] Preferably, a flexible baffle is fixed on the bottom of the material distributing and guiding plate, and a gap greater than the thickness of the material and less than twice the thickness of the material exists between the flexible baffle and the bottom of the spiral chute.

[0017] In summary, the technical effects and advantages of the utility model are as follows:

[0018] 1. In the utility model, the setting of the material distributing and guiding plate plays a good screening and material returning role, the screening by the material distributing and guiding plate not only plays a stable screening role, but also integrates screening, material guiding and material returning, realizes a good multi-layer material screening and returning effect, and can be assembled to an existing arbitrary vibration disc for use, without greatly changing the structure of the existing vibration disc, and is more suitable for popularization and use.

[0019] 2、The utility model discloses, through the setting of stud and knob nut, it is convenient to fix and install with spiral material groove with the material distribution guide plate, utilize the setting of the friction increasing washer to make installation more stable, and it is not easy to produce loosening and fall off because of vibration, in addition, through the setting of long sliding hole, the user can also adjust the interval between the material distribution guide plate and the spiral material groove groove bottom at any time, thereby adapt to the screening operation of different thickness materials, and the use flexibility is stronger.

[0020] 3、The utility model discloses, through the setting of the material baffle and back baffle, can avoid the overflow of multilayer material gathering, and the multilayer material is stably intercepted above the material distribution guide plate and is guided to the hopper inside vibration disc, realizes the stable and reliable back material operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 It is the first perspective three-dimensional structure schematic view in this embodiment;

[0023] Figure 2 It is the second perspective three-dimensional structure schematic view in this embodiment;

[0024] Figure 3 It is the front view structure schematic view in this embodiment;

[0025] Figure 4 It is the side view structure schematic view in this embodiment.

[0026] In the drawing: 1, spiral material groove;11, long sliding hole;2, material distribution guide plate;21, discharging inclined wall;22, guide inclined wall;221, material distribution part;23, transition protrusion;24, arc narrow hole;3, material baffle;4, back baffle;5, stud;6, friction increasing washer;7, knob nut;8, flexible baffle. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] Embodiment: reference Figures 1-4The illustrated thickness screening device includes a spiral chute 1 on a vibrating disc, a distribution guide plate 2 is installed on the spiral chute 1, the distribution guide plate 2 is located in the chute of the spiral chute 1, and there is a gap between the bottom of the distribution guide plate 2 and the bottom of the spiral chute 1, which is greater than the thickness of the material and less than twice the thickness of the material;

[0029] A discharging inclined wall 21 is formed on the upper part of the distribution guide plate 2, the inclination direction of the discharging inclined wall 21 is opposite to the inclination direction of the spiral chute 1, and the discharging inclined wall 21 is inclined towards the inside of the hopper of the vibrating disc;

[0030] A guide inclined wall 22 is also formed on the upper part of the distribution guide plate 2, the guide inclined wall 22 is inclined in the opposite direction to the movement direction of the material, and a distribution part 221 is formed on the side of the guide inclined wall 22 facing the material, the guide inclined wall 22 and the discharging inclined wall 21 form an intersecting edge on the upper part of the distribution guide plate 2, and the intersecting edge of the guide inclined wall 22 and the discharging inclined wall 21 extends along the upper part of the distribution guide plate 2 across two opposite corners of the distribution guide plate 2;

[0031] Wherein, the occupied area of the discharging inclined wall 21 gradually increases in the direction of the movement of the material, and the occupied area of the guide inclined wall 22 gradually decreases in the direction of the movement of the material.

[0032] Based on the above structure, when the material (having a fixed thickness) gradually rises along the spiral chute 1 under the action of the vibrating disc, the material is laid in one or more layers in the spiral chute 1, when the multi-layer material passes through the distribution guide plate 2, the upper layer of material is intercepted by the distribution guide plate 2, and as the material moves (slightly jumps forward relative to the spiral chute 1 and the distribution guide plate 2 due to the vibration of the vibrating disc), the upper layer of material is also shunted by the distribution guide plate 2, so that the single layer of material can pass through the gap between the distribution guide plate 2 and the bottom of the spiral chute 1, and the excess upper layer of material enters the upper part of the distribution guide plate 2 and is guided by the guide inclined wall 22 to rise by a certain height, the material after rising continues to move forward and moves to the part of the occupied area of the discharging inclined wall 21, and then the material slides into the hopper of the vibrating disc under the guidance of the discharging inclined wall 21, completing the reflux of the material, playing a good screening and material returning effect, using the distribution guide plate 2 for screening not only can play a stable screening effect, but also can integrate screening, material guiding and material returning, realize good multi-layer material screening and material returning effect, and can be assembled to any existing vibrating disc for use, without greatly changing the structure of the existing vibrating disc (only need to install the distribution guide plate 2 at a suitable position of the spiral chute 1), which is more suitable for popularization and use.

[0033] Further, one side of the distribution guide plate 2 abutting the inner side of the spiral chute 1 is fixed with a stud 5, the stud 5 penetrates the outer side of the spiral chute 1, and a knob nut 7 is screwed on the stud 5, and the stud 5 is frictionally fixed with the spiral chute 1 when the knob nut 7 is tightened;

[0034] The stud 5 is further sleeved with a galling pad 6, which is located between the knob nut 7 and the outer side of the spiral chute 1, and one side of the galling pad 6 abuts against the outer side of the spiral chute 1;

[0035] The spiral chute 1 is provided with a long sliding hole 11 extending vertically along the outer side of the spiral chute 1, and the stud 5 slides through the long sliding hole 11, and the outer diameter of the galling pad 6 is greater than the width of the long sliding hole 11.

[0036] Through the arrangement of the stud 5 and the knob nut 7, the material distribution guide plate 2 can be conveniently fixed and installed with the spiral chute 1, and the installation is more stable due to the arrangement of the galling pad 6, and it is not easy to loosen and fall off due to vibration. In addition, through the arrangement of the long sliding hole 11, the user can also adjust the distance between the material distribution guide plate 2 and the bottom of the spiral chute 1 at any time, so as to adapt to the screening operation of materials of different thicknesses, and the use flexibility is stronger.

[0037] Further, the material distribution guide plate 2 is integrally formed with a material blocking plate 3 on the side consistent with the movement direction of the material, the material blocking plate 3 extends vertically, and the material blocking plate 3 is integrally formed with a backstop plate 4 on the side close to the outer side of the spiral chute 1, the backstop plate 4 also extends vertically, and the thickness of the backstop plate 4 is less than the thickness of the material; through the arrangement of the material blocking plate 3 and the backstop plate 4, overflow of multi-layer materials can be avoided, and the multi-layer materials can be stably intercepted above the material distribution guide plate 2 and guided into the hopper of the vibration disc, so as to realize stable and reliable material returning operation.

[0038] Further, the material distribution guide plate 2 is integrally formed with a material blocking plate 3 on the side consistent with the movement direction of the material, the material blocking plate 3 extends vertically, and the material blocking plate 3 is integrally formed with a backstop plate 4 on the side close to the outer side of the spiral chute 1, the backstop plate 4 also extends vertically, and the thickness of the backstop plate 4 is less than the thickness of the material; through the arrangement of the material blocking plate 3 and the backstop plate 4, overflow of multi-layer materials can be avoided, and the multi-layer materials can be stably intercepted above the material distribution guide plate 2 and guided into the hopper of the vibration disc, so as to realize stable and reliable material returning operation.

[0039] The material distribution guide plate 2 is further provided with an arc-shaped narrow hole 24 vertically penetrating the material distribution guide plate 2, the width of the arc-shaped narrow hole 24 is less than the thickness of the material, and the arc-shaped narrow hole 24 extends in an S-shaped curve, and the thickness of the widest bending part of the arc-shaped narrow hole 24 is also less than the thickness of the material. The arrangement of the arc-shaped narrow hole 24 can reduce the self-weight of the material distribution guide plate 2, so that the consistency of the material distribution guide plate 2 with the vibration frequency of the spiral chute 1 is strong, and the difference frequency vibration between the material distribution guide plate 2 and the spiral chute 1 due to the influence of the vibration force can be avoided, and the screening effect is ensured.

[0040] Further, the bottom of the material distribution guide plate 2 is fixed with a flexible baffle 8, the flexible baffle 8 is made of flexible material (such as rubber, silica gel) commonly used in the prior art and suitable for the embodiment, there is a gap between the flexible baffle 8 and the groove bottom of the spiral chute 1, the gap is greater than the thickness of the material and less than twice the thickness of the material, through the setting of the flexible baffle 8, the hard collision between the material and the bottom of the material distribution guide plate 2 can be avoided, the material can be screened while protecting the material and the material distribution guide plate 2, and the material or the material distribution guide plate 2 is prevented from being damaged.

[0041] The working principle of the utility model is: in the daily use process, when the material gradually rises along the spiral chute 1 under the action of the vibrating disc, the material is laid in the spiral chute 1 to form one or more layers, when the multi-layer material passes through the material distribution guide plate 2, the upper layer of material is intercepted by the material distribution guide plate 2, and with the movement of the material, the upper layer of material is also shunted by the material distribution guide plate 2, so that the single layer of material can pass through the gap between the material distribution guide plate 2 and the groove bottom of the spiral chute 1, and the excess upper layer of material enters the upper part of the material distribution guide plate 2 and is relatively raised under the guiding action of the guide inclined wall 22, the raised material continues to move forward and moves to the part of the occupied area of the discharging inclined wall 21, and then the material slides to the hopper of the vibrating disc under the guiding action of the discharging inclined wall 21, the material is completed, good screening and material returning effects are achieved.

[0042] It should be further pointed out that the vibrating disc, the spiral chute and other technical features involved in the utility model patent application should be regarded as prior art, the specific structure, working principle and possible control mode, spatial arrangement mode of these technical features can be selected by the prior art, and should not be regarded as the invention point of the utility model patent, and the utility model patent will not be further expanded and described in detail.

[0043] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A thickness screening device comprising a spiral chute (1) on a vibrating tray, characterized in that: The spiral chute (1) is provided with a distribution guide plate (2), which is located in the chute of the spiral chute (1), and a gap between the bottom of the distribution guide plate (2) and the bottom of the spiral chute (1) is greater than the thickness of the material and less than twice the thickness of the material. The upper part of the distribution guide plate (2) is provided with a discharging inclined wall (21), the inclination direction of the discharging inclined wall (21) is opposite to the inclination direction of the spiral chute (1), and the discharging inclined wall (21) is inclined to the inside of the hopper of the vibrating disc. The upper part of the distribution guide plate (2) is also provided with a guide inclined wall (22), the guide inclined wall (22) is inclined to the opposite direction of the movement direction of the material, and the side of the guide inclined wall (22) facing the material is provided with a distribution part (221), the guide inclined wall (22) and the discharging inclined wall (21) form an intersecting edge on the upper part of the distribution guide plate (2), and the intersecting edge of the guide inclined wall (22) and the discharging inclined wall (21) extends along the upper part of the distribution guide plate (2) and across two opposite corners of the distribution guide plate (2). The occupied area of the discharging inclined wall (21) gradually increases in the direction of the movement of the material, and the occupied area of the guide inclined wall (22) gradually decreases in the direction of the movement of the material.

2. A thickness screening device according to claim 1, characterized in that: The side of the distribution guide plate (2) abutting with the inside of the spiral chute (1) is fixed with a stud (5), the stud (5) penetrates through the outside of the spiral chute (1), and a knob nut (7) is screwed on the stud (5), and the stud (5) is frictionally fixed with the spiral chute (1) when the knob nut (7) is tightened. A friction increasing gasket (6) is also sleeved on the stud (5), the friction increasing gasket (6) is located between the knob nut (7) and the outside of the spiral chute (1), and one side of the friction increasing gasket (6) abuts against the outside of the spiral chute (1).

3. A thickness screening device according to claim 2, wherein: A long sliding hole (11) is formed in the spiral chute (1), the long sliding hole (11) extends vertically along the outside of the spiral chute (1), the stud (5) slides through the long sliding hole (11), and the outer diameter of the friction increasing gasket (6) is greater than the width of the long sliding hole (11).

4. A thickness screening device according to claim 1, wherein: The side of the distribution guide plate (2) consistent with the movement direction of the material is integrally formed with a material blocking plate (3), the material blocking plate (3) extends vertically, and the side of the material blocking plate (3) close to the outside of the spiral chute (1) is also integrally formed with a back baffle (4), the back baffle (4) also extends vertically, and the thickness of the back baffle (4) is less than the thickness of the material.

5. A thickness screening device according to claim 4, wherein: The intersection of the distribution guide plate (2) and the material blocking plate (3) is integrally formed with an upward inclined transition protrusion (23), and the bottom surface of the transition protrusion (23) intersects with the discharging inclined wall (21). An arc-shaped narrow hole (24) vertically penetrating the distribution guide plate (2) is also formed in the distribution guide plate (2), the width of the arc-shaped narrow hole (24) is less than the thickness of the material, and the arc-shaped narrow hole (24) extends in an S-shaped curve, and the thickness of the widest bending part of the arc-shaped narrow hole (24) is also less than the thickness of the material.

6. A thickness screening device according to claim 1, wherein: The bottom of the material distribution guide plate (2) is fixed with a flexible baffle (8), and a gap greater than the thickness of the material and less than twice the thickness of the material exists between the flexible baffle (8) and the trough bottom of the spiral trough (1).

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