A hopper scraping device

Abstract

The present invention discloses a hopper scraping device, which is mainly applied to a gravity type automatic weighing feeder. Its structure includes a frame, a material guiding cylinder, a driving part, an inner scraping part and a side scraping part. The material guiding cylinder is fixed on one side of the frame. The inner scraping part and the side scraping part are both located below the material guiding cylinder. The inner scraping part includes a material receiving part and an inner scraping part. The inner scraping part is slidably erected on the surface of the material receiving part for receiving materials. The driving part can drive the material receiving part and the inner scraping part to move relatively, so that the inner scraping part can push the materials in the material receiving part to the edge of the material receiving part. The side scraping part includes a side scraping part, and the side scraping part is slidably located on the surface of the inner scraping part. By adopting the present invention, problems such as slow flow and residue of high-viscosity materials can be effectively improved, the material flow speed is greatly increased, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gravity type automatic filling weigher, and particularly relates to a hopper scraping device. Background Art

[0002] With the development of electronic technology and computer technology, the quantitative weighing technology combined with a microcomputer system is widely used in various industries. In the field of food quantitative weighing and packaging, such quantitative weighing equipment is often required. The gravity type automatic filling weigher is a device commonly used for quantitative weighing in this field. The gravity type automatic filling weigher is an intelligent combined type quantitative weighing and packaging device, and its basic principle is to evenly divide and weigh materials by using multiple hoppers, and combine hoppers with appropriate weights to obtain a portion of materials with a weight within the standard deviation range.

[0003] At present, the gravity type automatic filling weighers on the market are mostly used for combined weighing of some regular and highly fluid materials. For highly viscous materials, due to their poor fluidity characteristics, problems such as slow material flow speed and material adhesion resulting in residue often occur in the combination scale, which affects production efficiency. Existing gravity type automatic filling weighers often use the method of "surface improvement" to solve this problem. For example, in the invention CN201810829275.4, a combination scale is disclosed, in which a grid plate structure is adopted in the storage hopper and the weighing hopper so that when the highly viscous material contacts the surfaces of the storage hopper and the weighing hopper, the contact area can be reduced, thereby achieving the purpose of accelerating the material flow speed. Or spraying Teflon on the surfaces of the storage hopper and the weighing hopper to improve their surface lubricity, or using pattern plates, mirror plates, nylon plates, etc. as the panels of the storage hopper and the weighing hopper to improve their surface lubricity. The above solutions are all surface treatments or material replacements of the storage hopper and the weighing hopper. In actual use, their improvement effects are limited and cannot significantly increase the flow speed of highly viscous materials, thus restricting production efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hopper scraping device, which can effectively improve problems such as slow flow and residue of highly viscous materials, significantly increase the material flow speed, and improve production efficiency.

[0005] To solve the above technical problem, the present invention provides a hopper scraping device, which includes a frame, a guide cylinder, a driving part, a linkage part, an inner scraping part and a side scraping part. The guide cylinder is fixed on one side of the frame, and both the inner scraping part and the side scraping part are located below the guide cylinder.

[0006] The inner scraping part includes a material receiving part and an inner scraping part. The material receiving part is located below the guide cylinder, and the material receiving part can receive the materials falling from the guide cylinder. The inner scraping part is slidably erected on the surface of the material receiving part for receiving materials.

[0007] The driving part includes a driving member, a transmission member and a crank. The movable end of the driving member is connected to the crank. The driving member can drive the crank to rotate and transmit power to the transmission member.

[0008] The side scraping part includes a side scraping member. The side scraping member is slidably located on the surface of the inner scraping member. The side scraping member can slide from one side of the inner scraping member to the other side, so that the material on the inner scraping member is pushed to the edge of the inner scraping member.

[0009] The linkage part is provided with a reverse linkage mechanism or a linkage link mechanism. The linkage part is connected to the transmission member. The driving part can make the material receiving member and the inner scraping member swing in opposite directions through the reverse linkage mechanism or the reverse linkage link mechanism. The inner scraping member can push the material in the material receiving member to the edge of the material receiving member.

[0010] Wherein, the material receiving member is provided with a first connecting arm. The free end of the first connecting arm is connected to the transmission member. The driving member can drive the material receiving member to swing reciprocally through the connecting arm.

[0011] Wherein, the upper edge of the inner scraping member is close to the bottom opening of the material guiding cylinder, and the lower edge of the inner scraping member is close to the side of the material receiving member for receiving materials.

[0012] Wherein, the side scraping part further includes a support rod. The support rod is arranged on both sides of the side scraping member. One end of the support rod is connected to the side scraping member, and the other end is hinged to the frame.

[0013] Wherein, the initial position of the support rod is located at the upper edge of the inner scraping member, and the angle formed by its initial position and the side of the inner scraping member surface close to the material receiving member is an obtuse angle.

[0014] Wherein, the side scraping part further includes a reset member. One end of the reset member is fixed to the frame, and the other end is connected to the support rod. The reset member has elasticity and can make the side scraping member closely adhere to the surface of the inner scraping member.

[0015] Wherein, the reverse linkage mechanism includes a first gear mounted on the upper part of the connecting arm fixed to both sides of the material receiving member, and a second gear fixed to the upper parts of both sides of the inner scraping member. The first gear and the second gear are meshed with each other. When the first gear rotates together with the material receiving member, it can drive the second gear to rotate in the opposite direction.

[0016] Wherein, the linkage link mechanism includes a first link and a second link. The first link is connected between the second link and one side of the transmission member, and the second link is connected to one side of the inner scraping member.

[0017] Among them, the linkage rod mechanism further includes a third link and a fourth link. The third link is connected between the fourth link and one side of the transmission member, and the fourth link is connected to one side of the inner scraping member.

[0018] The third link and the fourth link are located on the other side of the transmission member away from the first link and the second link.

[0019] Implementing the present invention has the following beneficial effects:

[0020] The hopper scraping device of the present invention is provided with an inner scraping part. The inner scraping part includes a material receiving member and an inner scraping member. The material receiving member can receive the material falling from the guide cylinder, and the inner scraping member can scrape the material in the material receiving member towards the edge, so that the material can quickly fall from the material receiving member into the next station without residue. In order to be able to remove the residual material on the inner scraper, the hopper scraping device is also provided with a side scraping part. The side scraping part is provided with a side scraping member, which can push the material on the inner scraping member to the edge and make it fall into the next station, achieving the effect of removing the residual material. Therefore, the present invention can effectively improve problems such as slow flow and residue of highly viscous materials, greatly improve the material flow speed, and improve the production efficiency. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the first embodiment of the present invention;

[0022] Figure 2 is Figure 1 a schematic structural diagram after removing part of the frame and the guide cylinder in

[0023] Figure 3 is Figure 2 a schematic structural diagram after removing the driving part in

[0024] Figure 4 is a schematic structural diagram after removing part of the frame and the guide cylinder in the second embodiment of the present invention;

[0025] Figure 5 is Figure 4 a schematic structural diagram after removing the second link and the material receiving member in

[0026] Figure 6 is a schematic structural diagram of the third embodiment of the present invention. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inner, and outer that appear or will appear in the present invention are only based on the drawings of the present invention, and they are not specific limitations on the present invention.

[0028] Refer to Figure 1 and Figure 2 In the first embodiment of the present invention, a hopper scraping device is disclosed. It includes a frame 5, a material guiding cylinder 4, a driving part 3, a linkage part 6, an inner scraping part 1 and a side scraping part 2. The material guiding cylinder 4 is fixed to one side of the frame 5. Both the inner scraping part 1 and the side scraping part 2 are located below the material guiding cylinder 4. The inner scraping part 1 includes a material receiving part 11 and an inner scraping part 12. The material receiving part 11 is preferably a hopper door structure with a material receiving groove at the bottom, and the inner scraping part 12 is a plate part with a scraping function. The material receiving part 11 is located below the material guiding cylinder 4, so that the material receiving part 11 can receive the material falling from the material guiding cylinder 4. The inner scraping part 12 is slidably standing on the side of the material receiving part 11 for receiving the material, so as to scrape the material on the material receiving part 11.

[0029] The material receiving part 11 is provided with a first connecting arm 111 and a first gear 611. The free end of the first connecting arm 111 is connected to the transmission part 32. The driving part 31 can drive the material receiving part 11 through the first connecting arm 111, and at the same time transmit the power to the second gear 612 through the first gear 611. The driving part 3 includes a driving part 31, a transmission part 32 and a crank 33. The driving part 31 is preferably a rotating motor, and can also be a device with a reciprocating motion characteristic such as a cylinder. The driving part 31 can drive the crank 33, and the crank 33 transmits the power to the transmission part 32 to make a reciprocating motion. The transmission part 32 is connected to the first connecting arm 111 through a first connecting rod 621 and a second connecting rod 622. The driving part 31 can control the material receiving part 11 to swing reciprocally through the crank 33 and the transmission part 32.

[0030] The movable end of the driving part 31 is connected to the crank 33. The driving part 31 can drive the crank 33 to make a rotating motion and transmit the power to the transmission part 32, thereby driving the transmission part 32 to make a reciprocating motion. The side scraping part 2 includes a side scraping part 21. The side scraping part 21 is preferably a rod with a long rod with a scraping function at the bottom. The side scraping part 21 is slidably located on the surface of the inner scraping part 12. The power of the side scraping part 21 comes from the reciprocating inner scraping part 12. Driven by the inner scraping part 12, the side scraping part 21 can slide from one side of the inner scraping part 12 to the other side, so that the material on the inner scraping part 12 is pushed to the edge of the inner scraping part 12, and thus the remaining material on the inner scraping part 12 can also be scraped from top to bottom to the next station. By appropriately setting the strokes of the inner scraping part 12 and the side scraping part 21, the time when the inner scraping part 12 reaches the edge of the material receiving part 11 can be made equal to or close to the time when the side scraping part 21 reaches the edge of the inner scraping part 12, so that the material on the material receiving part 11 and the remaining material on the inner scraping part 12 can be scraped into the next station together, which can further improve the speed of the material flowing into the next station.

[0031] In the first embodiment of the present invention, the linkage part 6 is provided with a reverse linkage mechanism 61. The reverse linkage mechanism 61 is respectively connected to the material receiving part 11 and the inner scraping part 12. The driving part 3 can drive the material receiving part 11 and the inner scraping part 12 to swing in opposite directions through the reverse linkage mechanism 61. Among them, the inner scraping part 12 can push the material in the material receiving part 11 to the edge of the material receiving part 11.

[0032] Specifically, in the first embodiment, the reverse linkage mechanism 61 includes a first gear 611 fixed to the upper parts on both sides of the material receiving part 11, and a second gear 612 fixed to the upper parts on both sides of the inner scraping part 12. The first gear 611 is fixed to the connecting arms on both sides of the material receiving part 11. The second gear 612 is located below the first gear 611 and fixed to the upper part of the inner scraping part 12. The first gear 611 meshes with the second gear 612. Therefore, when the first gear 611 rotates, it can drive the second gear 612 to rotate in the opposite direction. When the material receiving part 11 swings under the action of the driving part 31, due to the meshing effect of the first gear 611 and the second gear 612, the inner scraping part 12 can swing in the opposite direction to the material receiving part 11, so as to scrape the material on the material receiving part 11 from one side edge to the other side edge, achieving the effect of scraping the material.

[0033] See Figure 4 and Figure 5 Referring to

[0034] Another set of link mechanism includes a third link 623, a fourth link 624 and an inner scraping member 12, wherein the third link 623 and the fourth link 624 are located on the other side of the transmission member 32 away from the first link 621 and the second link 622. In the second embodiment, the inner scraping member 12 is provided with a second connecting arm 121, the free end of the second connecting arm 121 is connected to the fourth link 624, and the third link 623 is connected to the fourth link 624. The driving member 31 drives the inner scraping member 12 to swing in a direction opposite to that of the material receiving member 11 through the transmission actions of the crank 33, the transmission member 32, the third link 623 and the fourth link 624. Finally, the driving member 31 drives the inner scraping member 12 to swing in a direction away from the driving member 31, and scrapes the material in the material receiving member 11 out by the inner scraping member 12.

[0035] Both ends of the second link 622 are respectively connected to one side of the material receiving member 11 and the same side of the transmission member 32 through the first link 621. Therefore, the driving member 31 can drive the material receiving member 11 through the transmission actions of the transmission member 32, the first link 621 and the second link 622. At the same time, both ends of the fourth link 624 are respectively connected to the connecting arm 121 on one side of the inner scraping member 12 and the same side of the transmission member 32 through the third link 623. The driving member 31 can drive the inner scraping member 12 through the transmission actions of the transmission member 32, the third link 623 and the fourth link 624. Therefore, when the driving member 31 drives the transmission member 32 to move up and down, it can drive the material receiving member 11 and the inner scraping member 12 to swing in opposite directions around the common rotation axis 112. Thus, mutual scraping between the material receiving member 11 and the inner scraping member 12 is realized.

[0036] The beneficial effects of the first embodiment and the second embodiment of the present invention are as follows:

[0037] The hopper scraping device of the first embodiment of the present invention is provided with an inner scraping part 1. The inner scraping part 1 includes a material receiving member 11 and an inner scraping member 12. The material receiving member 11 can receive the material falling from the material guiding cylinder 4, and the inner scraping member 12 can scrape the material in the material receiving member 11 to the edge, so that the material can quickly fall from the material receiving member 11 into the next working station. In order to remove the residual material on the inner scraping member 12, the hopper scraping device is further provided with a side scraping part 2. The side scraping part 2 is provided with a side scraping member 21, which can push the material on the inner scraping member 12 to the edge and make it fall into the next working station, achieving the effect of removing the residual material. Therefore, the present invention can effectively improve problems such as slow flow and residue of high-viscosity materials, greatly improve the material flow rate, and improve the production efficiency.

[0038] See Figure 2 、 Figure 3, in the first embodiment, the inner scraping part 1 further includes a rotating shaft 15. The second gears 612 on both sides of the upper part of the inner scraping member 12 and the first gears 611 on the first connecting arms 111 on both sides of the material receiving member 11 form a state of upper and lower gear meshing. The driving member 31 drives the first gear 611 on the first connecting arm 111 to reciprocally swing around the rotating shaft 15 through the crank 33, the transmission member 32, the first connecting rod 621, the second connecting rod 622, and the first connecting arm 111. At the same time, the first gear 611 drives the second gear 612 on the inner scraping member 12 to swing in the opposite direction. In order to limit the stroke of the inner scraping member 12 and ensure its movement efficiency in the material receiving member 11, the inner scraping part 1 further includes a limiting hole 16. The limiting hole 16 is preferably provided on the side wall of the material receiving member 11, and the edge of the limiting hole 16 can limit the inner scraping member 12 from swinging from the edge of one end of the material receiving member 11 to the edge of the other end.

[0039] The side scraping part 2 further includes a support rod 22. The support rod 22 is provided on both sides of the side scraping member 21 and is used to support and fix the side scraping member 21 to ensure its stable and normal operation. One end of the support rod 22 is connected to the side scraping member 21, and the other end is hinged to the machine frame 5. Therefore, the side scraping member 21 can rotate and swing around the hinge point through the support rod 22. The initial position of the support rod 22 is located at the upper edge of the inner scraping member 12, and the angle formed by its initial position and the side of the inner scraping member 12 surface close to the material receiving member 11 is an obtuse angle. Therefore, when the inner scraping member 12 slides from the inside of the material receiving member 11 to the outside, due to the fixed length of the support rod 22, it can only rotate and swing around its hinge point with the machine frame 5, and the angle formed by it and the lower plane of the inner scraping member 12 is an obtuse angle. Therefore, the support rod 22 can control the side scraping member 21 to slide from the upper edge of the inner scraping member 12 to the lower edge, so as to scrape the material on the inner scraping member 12 clean. The side scraping part 2 further includes a reset member 23. One end of the reset member 23 is fixed to the machine frame 5, and the other end is connected to the support rod 22. The reset member 23 has elasticity and is preferably a spring. The reset member 23 can make the side scraping member 21 closely adhere to the surface of the inner scraping member 12, so as to ensure that the side scraping member 21 can scrape the material on the surface of the inner scraping member 12 clean, and at the same time, it can also make the side scraping member 21 return to the initial position after completing the scraping action.

[0040] The upper edge of the inner scraping member 12 is close to the bottom opening of the material guiding cylinder 4, and the lower edge of the inner scraping member 12 is close to the side of the material receiving member 11 for receiving materials. Therefore, the inner scraping member 12 can scrape the materials in the area between the bottom of the material guiding cylinder 4 and the upper surface of the material receiving member 11 clean, with high working efficiency.

[0041] The working principle in the first embodiment is to adopt a crank - connecting rod mechanism plus a gear meshing mechanism. The installation direction of the driving member 31 faces the outside of the material receiving member 11, and it drives the crank 33 to rotate reciprocally, thereby driving the transmission member 32 to move reciprocally in the up - and - down direction. The transmission member 32 drives the material receiving member 11 to swing through this connecting rod mechanism. Under the gear meshing effect of the reverse linkage mechanism, the inner scraping member 12 swings in the direction opposite to that of the material receiving member 11.

[0042] See Figure 4 , the working principle in the second embodiment is to adopt a crank - connecting rod mechanism. The installation direction of the driving member 31 faces the outside of the material receiving member 11, and it drives the crank 33 to rotate reciprocally, thereby driving the transmission member 32 to move reciprocally in the up - and - down direction.

[0043] See Figure 6 , the third embodiment of the present invention discloses a hopper scraping device, which is different from the first embodiment in that the installation direction of the driving member 31 is parallel to the swinging plane of the material receiving member 11. When the driving member 31 drives the crank 33 to rotate, the connecting rod 32 eccentrically connected to the crank 33 will reciprocate in the direction from the inside to the outside of the material receiving member 11, thereby being able to drive the material receiving member 11 to swing reciprocally in the inside - and - outside direction through the first connecting arm 111. Then, by the gear meshing of the reverse linkage mechanism, the inner scraping member 12 is driven to swing in the direction opposite to that of the material receiving member 11. Compared with the first embodiment, the third embodiment has the advantages of simple structure and easy maintenance.

[0044] The working processes of the first embodiment and the third embodiment of the present invention are as follows:

[0045] Before the inner scraping member 12 works, the inner scraping member 12 is located inside the material receiving member 11, and at this time, the side scraping member 21 is located at the upper end of the inner scraping member 12. When the driving member 31 drives the material receiving member 11 to reciprocate between the outside and the inside through the crank 33 and the transmission member 32, under the gear meshing effect of the first gear 611 and the second gear 612, the inner scraping member 12 will swing in the direction opposite to that of the material receiving member 11, that is, swing from the inside to the outside, thereby gradually pushing the material falling into the material receiving member 11 to the outside of the material receiving member 11. After the inner scraping member 12 starts to move, since the support rod 22 connected to the side scraping member 21 forms an obtuse angle with the lower surface of the inner scraping member 12, when the inner scraping member 12 starts to move from the inside to the outside, the side scraping member 21 also scrapes from the upper part to the lower part of the inner scraping member 12, thereby scraping the material on the inner scraping member 12 towards the material receiving member 11 and pushing the material on the material receiving member 11 and the material on the inner scraping member 12 to the outside of the material receiving member 11 together, making it fall into the next working station.

[0046] See Figure 4 , the working process of the second embodiment of the present invention is as follows:

[0047] Before the inner scraper 12 works, the inner scraper 12 is located inside the material receiving member 11, and at this time, the side scraper 21 is located at the upper end of the inner scraper 12. The driving member 31 drives the material receiving member 11 to reciprocate around the axis 112 through the transmission of the crank 33, the transmission member 32, the first connecting rod 621, the second connecting rod 622, and the first connecting arm 111. At the same time, the driving member 31 drives the inner scraper 12 to swing in the direction opposite to the material receiving member 11, that is, from the inside to the outside, through the transmission of the crank 33, the transmission member 32, the third connecting rod 623, and the fourth connecting rod 624. Thus, the material falling into the material receiving member 11 is quickly pushed to the outside of the material receiving member 11 by the inner scraper 12. After the inner scraper 12 starts to move, since the support rod 22 connected to the side scraper 21 forms an obtuse angle with the lower surface of the inner scraper 12, when the inner scraper 12 starts to move from the inside to the outside, the side scraper 21 also scrapes from the upper part to the lower part of the inner scraper 12. Thus, the material on the inner scraper 12 is scraped towards the material receiving member 11 and is pushed to the outside of the material receiving member 11 together with the material on the material receiving member 11, so that it falls into the next working station.

[0048] The hopper scraping device disclosed in the embodiment of the present invention can be applied to the storage hopper of a gravity type automatic weighing scale, and can also be applied to the weighing hopper after adding a weighing module, and has a wide application range.

[0049] The above is the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A hopper scraping device, characterized in that, It includes a frame, a material guiding cylinder, a driving part, a linkage part, an inner scraping part and a side scraping part. The material guiding cylinder is fixed to one side of the frame, and both the inner scraping part and the side scraping part are located below the material guiding cylinder; The inner scraping part includes a material receiving part and an inner scraping piece. The material receiving part is located below the material guiding cylinder and can receive the material falling from the material guiding cylinder. The inner scraping piece is slidably standing on the side where the material receiving part receives the material; The driving part includes a driving piece, a transmission piece and a crank. The movable end of the driving piece is connected to the crank. The driving piece can drive the crank to make a rotational motion and transmit power to the transmission piece; The side scraping part includes a side scraping piece. The side scraping piece is slidably located on the surface of the inner scraping piece and can slide from one side of the inner scraping piece to the other side, so that the material on the inner scraping piece is pushed to the edge of the inner scraping piece; The linkage part is provided with a reverse linkage mechanism or a linkage link mechanism. The linkage part is connected to the transmission piece. The driving part can make the material receiving part and the inner scraping piece swing in opposite directions through the reverse linkage mechanism or the link mechanism. The inner scraping piece can push the material in the material receiving part to the edge of the material receiving part; The side scraping part further includes a support rod. The support rod is arranged on both sides of the side scraping piece. One end of the support rod is connected to the side scraping piece, and the other end is hinged to the frame; The initial position of the support rod is located at the upper edge of the inner scraping piece, and the angle formed by its initial position and the surface of the inner scraping piece close to the material receiving part is an obtuse angle; The side scraping part further includes a reset piece. One end of the reset piece is fixed to the frame, and the other end is connected to the support rod. The reset piece has elasticity and can make the side scraping piece closely adhere to the surface of the inner scraping piece; The upper edge of the inner scraping piece is close to the bottom opening of the material guiding cylinder, and the lower edge of the inner scraping piece is close to the side where the material receiving part receives the material.

2. The hopper scraping device according to claim 1, characterized in that, The material receiving part is provided with a first connecting arm. The free end of the first connecting arm is connected to the transmission piece. The driving piece can drive the material receiving part to make a reciprocating swing by driving the first connecting arm together; 3. The hopper scraping device according to claim 1 or 2, characterized in that, The reverse linkage mechanism includes a first gear fixed to the upper parts of both sides of the material receiving part and a second gear fixed to the upper parts of both sides of the inner scraping piece. The first gear and the second gear are meshed with each other up and down. When the first gear rotates, it can drive the second gear to rotate in the opposite direction; 4. The hopper scraping device according to claim 1 or 2, characterized in that, The linkage link mechanism includes a first link and a second link. The first link is connected between the second link and one side of the transmission piece, and the second link is connected to one side of the inner scraping piece; 5. The hopper scraping device according to claim 4, characterized in that, The linkage link mechanism further includes a third link and a fourth link. The third link is connected between the fourth link and one side of the transmission piece, and the fourth link is connected to one side of the inner scraping piece; The third link and the fourth link are located on the other side of the transmission piece away from the first link and the second link.

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