Anti-arching feeding device and method
By setting an annular edge barrier and barrier channel on the silo feed pipeline, combined with the design of external power timing flip, the problem of material arches during unloading of the silo is solved, and the smooth transmission of materials and the effect of preventing arches is achieved.
Patent Information
- Application Number
- CN202111614103.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-27
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2041-12-27
AI Technical Summary
Existing silos are prone to arching when unloading, resulting in blockage of material flow and affecting the continuity and reliability of unloading operations.
An anti-arch feeding device is designed, including a feed pipe and an annular edge barrier. A barrier channel for material to pass through is provided in the middle of the edge barrier. The area of the barrier channel is moderate to reduce the contact between the material and the inner wall of the shrinking section. The edge barrier is equipped with external power and is turned regularly to reduce the probability of material forming.
It effectively prevents the occurrence of material formation, ensures smooth transmission of materials, and does not require real-time operation, avoiding the impact on material transmission.
Smart Images
Figure CN116353982B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of material conveying mechanisms, and particularly to an anti-arching feeding device and method. Background Art
[0002] In the industrial production process, a silo is a commonly used device for material transfer and storage. The upper section of the currently used silo is generally cylindrical, and the lower section is generally conical with a gradually shrinking shape. An outlet is provided at the bottom of the lower section. Arching is a harmful phenomenon that often occurs when the silo discharges materials. When arching occurs in the silo, it will block the material flow and destroy the continuity and reliability of the discharging operation. The diameter of the lower section of the silo gradually shrinks. The closer it is to the outlet, the greater the cross-sectional shrinkage rate, the more concentrated the stress, and the easier the material is to arch.
[0003] To solve the problems of silo blockage or poor material feeding, Chinese patent document CN214113633U discloses an anti-arching silo, which includes a cylindrical silo and a conical silo. A plurality of partition plates for dividing the inner wall of the conical silo into separate areas are provided on the inner wall of the conical silo. The partition plates are connected to the inner wall of the conical silo through a first rotating member, so that the partition plates can swing around the first rotating member; an anti-arching device is provided near the conical silo in the silo. The anti-arching device includes a driving part, an anti-arching shaft, and a cam structure provided on the anti-arching shaft and connected to the partition plates. The cam structure drives the partition plates to swing under the drive of the anti-arching shaft to break the arch of the material. Chinese patent document CN206417422U also discloses a silo with an anti-arching device, which also includes a cylindrical silo and a conical silo. An anti-arching device is provided near the conical silo in the silo. The anti-arching device includes a driving part and a spiral anti-arching device. A motor for driving the spiral anti-arching device to rotate is provided in the driving part. The driving part is fixedly connected to the silo through a pipe fitting. The spiral anti-arching device spirally extends towards the outlet of the conical silo. The disadvantages of the above two solutions are as follows: they need to be continuously powered on and operated. Otherwise, these mechanisms designed for anti-arching instead provide favorable conditions for material arching, and also affect the smooth conveyance of materials. Summary of the Invention
[0004] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art, and provide an anti-arching feeding device, which can achieve the purpose of preventing material arching without the need for real-time operation, and does not affect the smooth passage of materials.
[0005] To achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an anti-arching feeding device, including a feeding pipeline, a reduced diameter section is provided at the bottom of the feeding pipeline, the reduced diameter section has a reduced diameter section top and a reduced diameter section bottom, the reduced diameter section bottom is connected to an adjacent mechanism, an edge blocking portion is provided on the feeding pipeline, the edge blocking portion is annular, a blocking portion channel is opened in the middle of the edge blocking portion for material to pass through, the area of the blocking portion channel is smaller than the area of the reduced diameter section top and not smaller than the area of the reduced diameter section bottom, the edge blocking portion is equipped with an external power, and the edge blocking portion can be flipped regularly under the action of the external power.
[0006] The inventive concept of the present application is:
[0007] According to previous practical experience, arching mainly occurs in the conical part of the silo. In the prior art, mechanical devices are usually used to destroy the formed arch surface, while the present application avoids the formation of the arch surface by destroying the conditions for arching: part of the material falls directly to the bottom of the reduced diameter section through the blocking part channel, while part of the material that should fall to the inner wall of the reduced diameter section is blocked by the edge blocking part, thereby reducing the contact opportunity between the material and the inner wall of the reduced diameter section, thereby directly destroying the conditions for arching. It is true that the accumulation of materials at the edge blocking part will also produce a small slope, but the probability of material arching above the edge blocking part is much smaller than the probability of arching in the reduced diameter section. In addition, the timed flipping of the edge blocking part further reduces the probability of material arching above the edge blocking part. On the other hand, the area of the blocking part channel is not less than the area of the bottom of the reduced diameter section, so that the blocking part channel does not have a significant impact on the discharge speed of the feed pipeline.
[0008] Furthermore, the outer diameter of the edge blocking portion is greater than the distance between the edge blocking portion and the top of the diameter-reducing section. When the edge blocking portion rotates, it can sweep over the top of the diameter-reducing section, further reducing the probability of material arching.
[0009] Furthermore, the adjacent mechanism is a screw conveying shaft, and the bottom of the reduced diameter section is connected to the feed port of the screw conveying shaft.
[0010] The present invention also provides another anti-arching feeding device, including a feeding pipeline, a reduced diameter section is provided at the bottom of the feeding pipeline, the reduced diameter section has a reduced diameter section top and a reduced diameter section bottom, the reduced diameter section bottom is connected to an adjacent mechanism, an edge blocking portion is provided on the feeding pipeline, the edge blocking portion is annular, a blocking portion channel is opened in the middle of the edge blocking portion for material to pass through, the area of the blocking portion channel is smaller than the area of the reduced diameter section top and not smaller than the area of the reduced diameter section bottom, the edge blocking portion is equipped with an external power, and the edge blocking portion can make horizontal movements in and out of the feeding pipeline at regular intervals under the action of the external power.
[0011] Furthermore, a pendant part is provided on the edge blocking part, and the pendant part extends to the reduced-diameter section. The reciprocating movement of the pendant part along with the edge blocking part enables the pendant part to move horizontally in the reduced-diameter section, playing a role in stirring the material and preventing the material from arching in the reduced-diameter part.
[0012] Furthermore, the pendant part is in the shape of a chain or rake teeth.
[0013] The present invention provides an anti-arching feeding method. An edge blocking part is arranged in the feeding pipeline, and the edge blocking part is located above the reduced-diameter section of the feeding pipeline. A blocking part channel for the material to pass through is provided in the middle of the edge blocking part, so that the edge blocking part can block part of the material from falling onto the inner wall of the reduced-diameter section. The edge blocking part is flipped regularly or as needed to make the material accumulated on the edge blocking part fall.
[0014] Furthermore, when the edge blocking part is flipped, the edge of the edge blocking part can touch the top of the reduced-diameter section, and a large flipping amplitude of the edge blocking part is beneficial to accelerating the falling of the material.
[0015] Furthermore, the blocking part channel of the edge blocking part is in the shape of a frustum of a cone, so that the edge blocking part can guide the material falling to the edge of the feeding pipeline towards the blocking part channel.
[0016] The present invention provides another anti-arching feeding method. An edge blocking part is arranged in the feeding pipeline, and the edge blocking part is located above the reduced-diameter section of the feeding pipeline. A blocking part channel for the material to pass through is provided in the middle of the edge blocking part, so that the edge blocking part can block part of the material from falling onto the inner wall of the reduced-diameter section. The edge blocking part is moved horizontally relative to the feeding pipeline regularly or as needed to make the surface of the edge blocking part rub against the wall surface of the feeding pipeline, thereby scraping off the material accumulated on the edge blocking part.
[0017] In summary, the present invention achieves the purpose of preventing the material from arching in a simple way and ensures the smooth conveyance of the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;
[0019] Figure 2 is a top view of the edge blocking part in Embodiment 1 of the present invention;
[0020] Figure 3 is a schematic structural diagram of Embodiment 2 of the present invention.
[0021] In the figure: 10, feeding pipeline; 20, reduced-diameter section; 21, top of the reduced-diameter section; 22, bottom of the reduced-diameter section; 30, edge blocking part; 31, blocking part channel; 40, external power; 50, pendant part; 60, adjacent mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Example 1
[0023] As Figure 1 shown, for the anti-arching feeding device of the present invention, the main body is a feeding pipeline 10. The inner wall of the feeding pipeline 10 can adopt a high molecular weight polyethylene plate with good self-lubricating performance to reduce the friction between the material and the inner wall of the feeding pipeline. A reduced-diameter section 20 is provided at the bottom of the feeding pipeline 10. The reduced-diameter section has a reduced-diameter section top 21 and a reduced-diameter section bottom 22, and the reduced-diameter section bottom 22 is connected to an adjacent mechanism 60.
[0024] As Figure 1 and Figure 2 shown, an annular edge blocking portion 30 is provided above the reduced-diameter section 20 of the feeding pipeline 10. A blocking portion passage 31 for the material to pass through is opened in the middle of the edge blocking portion 30. The area of the blocking portion passage 31 is smaller than the area of the reduced-diameter section top 21 and not less than the area of the reduced-diameter section bottom 22. The edge blocking portion 30 is equipped with an external power source 40. The external power source 40 can be selected as an oil cylinder. A pendant portion 50 is provided on the edge blocking portion 30, and the pendant portion 50 extends to the reduced-diameter section 20.
[0025] Working principle: The material in the feeding pipeline 10 is divided into two parts. One part of the material directly falls to the bottom of the reduced-diameter section 20 through the blocking portion passage 31 in the middle of the edge blocking portion 30 and enters the adjacent mechanism 60. The adjacent mechanism 60 is a screw conveyor shaft, and the feeding port of the screw conveyor shaft is communicated with the reduced-diameter section bottom 22. The material is conveyed to the subsequent processing device through the screw conveyor shaft; the other part of the material is blocked by the edge blocking portion 30, so the contact with the inner wall of the reduced-diameter section 20 is reduced, thereby reducing the probability of arching in the reduced-diameter section 20. When a certain amount of material accumulates on the edge blocking portion 30, under the action of the external power source 40, the edge blocking portion 30 can periodically make a lateral movement in and out of the feeding pipeline 10, so that the surface of the edge blocking portion 30 rubs against the wall surface of the feeding pipeline 10, thereby scraping off the material accumulated on the edge blocking portion 30. And the back-and-forth movement of the edge blocking portion 30 drives the pendant portion 50 to make a lateral movement in the reduced-diameter section 20 to prevent the material from arching in the reduced-diameter portion. The pendant portion 50 is in the shape of a chain or rake teeth.
[0026] Example 2
[0027] As Figure 3 shown, the difference between this embodiment and Example 1 is that:
[0028] 1. The setting of the hanging part is cancelled. Under the action of the external power 40, the edge blocking part 30 makes the materials accumulated on the edge blocking part 30 fall by flipping. Compared with the way of the lateral movement of the edge blocking part 30, the flipping way is more conducive to the falling of the materials. When the edge blocking part 30 flips, the edge of the edge blocking part 30 can touch the top 21 of the reduced-diameter section, which can not only stir the space where the top 21 of the reduced-diameter section is located, but also generate a downward acting force on the materials in the space where the top 21 of the reduced-diameter section is located, accelerating the falling of the materials.
[0029] 2. In order to guide the materials at the edge of the feed pipeline 10 to the blocking part channel 31, the blocking part channel 31 of the edge blocking part 30 is designed to be frustum-shaped, so that the edge blocking part 30 can guide the materials falling to the edge of the feed pipeline 10 to the blocking part channel 31.
Claims
1. Anti-arching feeding device, comprising a feeding pipeline (10), a reduced-diameter section (20) is provided at the bottom of the feeding pipeline (10), the reduced-diameter section (20) has a reduced-diameter section top (21) and a reduced-diameter section bottom (22), and the reduced-diameter section bottom (22) is connected to an adjacent mechanism (60). Characterized in that: An edge blocking part (30) for accumulating materials is provided on the feeding pipeline (10), the edge blocking part (30) is annular, a blocking part passage (31) for the materials to pass through is opened in the middle of the edge blocking part (30), the area of the blocking part passage (31) is smaller than the area of the reduced-diameter section top (21) and not smaller than the area of the reduced-diameter section bottom (22), the edge blocking part (30) is equipped with an external power source (40), and the edge blocking part (30) can be flipped regularly under the action of the external power source (40) so that the materials accumulated on the edge blocking part (30) fall.
2. The anti-arching feeding device according to claim 1, Characterized in that: The outer diameter of the edge blocking part (30) is greater than the distance between the edge blocking part (30) and the reduced-diameter section top (21).
3. Anti-arching feeding device, comprising a feeding pipeline (10), a reduced-diameter section (20) is provided at the bottom of the feeding pipeline (10), the reduced-diameter section (20) has a reduced-diameter section top (21) and a reduced-diameter section bottom (22), and the reduced-diameter section bottom (22) is connected to an adjacent mechanism (60). Characterized in that: An edge blocking part (30) for accumulating materials is provided on the feeding pipeline (10), the edge blocking part (30) is annular, a blocking part passage (31) for the materials to pass through is opened in the middle of the edge blocking part (30), the area of the blocking part passage (31) is smaller than the area of the reduced-diameter section top (21) and not smaller than the area of the reduced-diameter section bottom (22), the edge blocking part (30) is equipped with an external power source (40), and the edge blocking part (30) can make a lateral movement in and out of the feeding pipeline (10) regularly under the action of the external power source (40) to scrape off the materials accumulated on the edge blocking part (30).
4. The anti-arching feeding device according to claim 3, Characterized in that: A pendant part (50) is provided on the edge blocking part (30), and the pendant part (50) extends to the reduced-diameter section (20).
5. The anti-arching feeding device according to claim 4, Characterized in that: The pendant part (50) is in a chain shape or a rake tooth shape.
6. The anti-arching feeding device according to claim 1, Characterized in that: The adjacent mechanism (60) is a screw conveyor shaft, and the reduced-diameter section bottom (22) is communicated with the feeding port of the screw conveyor shaft.
7. Anti-arching feeding method, Characterized in that: An edge blocking part (30) for accumulating materials is arranged in the feeding pipeline (10), the edge blocking part (30) is located above the reduced-diameter section (20) of the feeding pipeline (10), a blocking part passage (31) for the materials to pass through is opened in the middle of the edge blocking part (30) so that the edge blocking part (30) can block part of the materials from falling onto the inner wall of the reduced-diameter section (20), and the edge blocking part (30) is flipped regularly or as needed so that the materials accumulated on the edge blocking part (30) fall.
8. The anti-arching feeding method according to claim 7, characterized in that: when the edge blocking part (30) is flipped, the edge of the edge blocking part (30) can touch the top of the reduced diameter section (21).
9. The anti-arching feeding method according to claim 7, characterized in that: the blocking part channel (31) of the edge blocking part (30) is frustum-shaped so that the edge blocking part (30) can guide the material falling to the edge of the feeding pipeline (10) into the blocking part channel (31).
10. The anti-arching feeding method, characterized in that: an edge blocking part (30) for accumulating materials is arranged in the feeding pipeline (10), the edge blocking part (30) is located above the reduced diameter section (20) of the feeding pipeline (10), a blocking part channel (31) for the material to pass through is arranged in the middle of the edge blocking part (30) so that the edge blocking part (30) can block part of the material from falling onto the inner wall of the reduced diameter section (20), and the edge blocking part (30) is periodically or as required transversely moved relative to the feeding pipeline (10) so that the surface of the edge blocking part (30) rubs against the wall surface of the feeding pipeline (10), thereby scraping off the materials accumulated on the edge blocking part (30).
Citation Information
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