Anti-blocking powder silo

Abstract

The present application provides an anti-blocking powder silo, which belongs to the technical field of powder storage, and comprises a silo body and an arch-breaking mechanism arranged therein, wherein the silo body is composed of a main section and a conical section, and a screw conveyor is arranged at the discharge port opened at the bottom of the conical section, and the arch-breaking mechanism comprises: a vibrating plate, which is arranged in an annular shape, and a plurality of vibrating motors capable of vibrating the vibrating plate are arranged on the bottom surface of the vibrating plate; an elastic connecting member, which is arranged between the vibrating plate and the top wall of the silo body; a blocking plate, which is vertically slidably connected to a cross truss in the middle of the vibrating plate, and the blocking plate is arranged in an inverted cone shape, and a plurality of transmission rods are radially slidably connected to the vibrating plate through springs, and the two ends of the transmission rods can respectively abut the inner wall of the conical section and the conical surface of the blocking plate; the present application can slow down the powder flow rate at the center of the silo body after the arch is broken, and can also speed up the falling speed of the powder in the circumferential direction, thereby reducing the possibility of the occurrence of the "rat hole" phenomenon.

Description

Technical Field

[0001] The present application relates to the technical field of powder storage, and in particular to an anti-blocking powder silo. Background Art

[0002] A powder silo is a container or device used to store and manage powdered materials. The main function of a powder silo is to store powder safely and effectively to prevent the material from deteriorating in quality due to moisture, oxidation or other environmental factors.

[0003] The flow of powder in the powder silo is different from the flow of fluid. It is rolling, sliding and settling under the action of gravity and external force. Therefore, when the powder material is discharged from the cone mouth of the powder silo, due to the material characteristics, the friction of the silo wall and the reduction of the flow diameter, the powder material may form an arch at the cone mouth of the powder silo, blocking the discharge port and making it difficult to discharge the material.

[0004] Referring to the Chinese patent document with announcement number CN212686671U and publication date March 12, 2021, titled "A hopper vibration arch breaking device", the lower hopper is driven to vibrate by a vibration mechanism, and the arch breaking cone vibrates with the vibration of the lower hopper, thereby breaking the arched material to avoid the problem of poor material transportation caused by arching of the material in the hopper.

[0005] Referring to the above technical solution, in order to improve the arch-breaking effect, the vibrating arch-breaking mechanism is usually set at the center of the powder bin to more effectively promote the flow of powder. In this case, the falling speed of the powder in the middle of the powder bin will gradually increase, while the powder in the circumferential position of the powder bin may still adhere to the bin wall to form a "rat hole" phenomenon, which may easily cause the upper layer of powder inside the powder bin to be discharged before the powder attached to the bin wall during subsequent discharge, making it difficult to achieve the first-in-first-out of the powder stored in the powder bin. Summary of the invention

[0006] In view of this, the present application provides an anti-blocking powder silo, which is mainly used to solve the problem that the powder stored in the powder silo is difficult to be first-in-first-out due to the "rat hole" phenomenon.

[0007] In order to solve the above-mentioned technical problems, the present application provides an anti-blocking powder silo, including a silo body and an arch-breaking mechanism arranged inside the silo, wherein the silo body is composed of a main section and a conical section, and a screw conveyor is arranged at the discharge port opened at the bottom of the conical section, which is used to discharge the powder in the silo body, and the arch-breaking mechanism includes: a vibrating plate, which is arranged in an annular shape and is located in the middle of the conical section, and a plurality of vibration motors capable of vibrating the vibrating plate are arranged on the bottom surface of the vibrating plate; an elastic connecting member, which is arranged between the vibrating plate and the top wall of the silo body, and is used to provide a connecting support for the vibrating plate and make the vibrating plate have an upward trend; a blocking plate, which is vertically slidably connected to the cross truss in the middle of the vibrating plate, and the blocking plate is arranged in an inverted cone shape, and a plurality of transmission rods are radially slidably connected to the vibrating plate through springs, and the two ends of the transmission rods can respectively abut the inner wall of the conical section and the conical surface of the blocking plate.

[0008] By adopting the above technical solution, the blocking disk can reduce the falling speed of the powder at the center of the silo, and at the same time promote the powder at the center of the silo to move toward the circumferential position, and then the transmission rod transmits the vibration to promote the powder attached to the silo wall to flow downward, so as to realize the first-in-first-out of the powder stored in the silo.

[0009] Optionally, the top of the blocking disk is configured in a spherical dome shape to promote the powder blocked by the blocking disk to disperse toward a circumferential position.

[0010] By adopting the above technical solution, when the powder at the center of the silo body impacts the blocking disk, the spherical arch design is more conducive to the powder at the center of the silo body moving toward the circumferential position.

[0011] Optionally, the elastic connecting member includes a sleeve fixedly connected to the top wall of the bin body and a suspension rod slidably mounted inside the sleeve, the bottom end of the suspension rod is fixedly connected to the vibration plate, and a tension spring is fixedly connected between the sleeve and the suspension rod.

[0012] By adopting the above technical solution, the suspension rod can be adaptively adjusted according to the height of the powder arch position with the cooperation of the tension spring, so as to meet the arch breaking requirements of different heights.

[0013] Optionally, both ends of the transmission rod are rotatably connected with rolling balls, and the rolling balls are used to replace the transmission rod to abut against the inner wall of the tapered section or the tapered surface of the blocking disk.

[0014] By adopting the above technical solution, when the rolling ball contacts the inner wall of the tapered section or the tapered surface of the blocking disk in a rolling friction manner, the friction between the transmission rod and the inner wall of the tapered section or the tapered surface of the blocking disk can be reduced.

[0015] Optionally, a limit member is provided on the blocking disk, for keeping the rolling ball on the transmission rod close to the blocking disk in contact with the conical surface of the blocking disk.

[0016] Optionally, the limiting member includes an anti-arc groove arranged at the bottom edge of the blocking disk, and the anti-arc groove matches the rolling ball on the transmission rod close to the blocking disk.

[0017] By adopting the above technical solution and utilizing the anti-arc groove, the possibility of the rolling ball on the side of the transmission rod close to the blocking disk slipping off the blocking disk can be reduced.

[0018] Optionally, a plurality of reinforcing plates corresponding one to one with the transmission rods are arranged on the warehouse wall of the conical section, and the shape of the reinforcing plates matches the moving path of the transmission rod.

[0019] Optionally, a feed box arranged at the top of the main section is provided with multiple layers of inclined slow flow plates inside, which are used to disperse the powder and reduce the impact speed of the powder during feeding.

[0020] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The powder in the center is transferred to the circumferential direction by blocking and diverting, and vibration conduction is used to accelerate the falling speed of the powder in the circumferential direction, thereby reducing the possibility of the "rat hole" phenomenon; the design of floating vibration arch breaking can not only meet the arch breaking needs of different heights, but also keep the falling speed of the powder inside the conical section as constant as possible, reducing the probability of blockage and arch formation in the subsequent discharge process.

[0022] 2. After the arch is broken, the large amount of falling powder can be buffered and decelerated to reduce the impact force of the powder by slowing down the falling speed of the powder, so as to prevent the powder from being tamped on the inner wall of the silo, thereby reducing the possibility of the powder arching again due to impact and compression. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an anti-blocking powder silo for this application;

[0024] Figure 2 This is a cross-sectional view of the warehouse body of this application;

[0025] Figure 3 This is a structural diagram of the arch breaking mechanism of this application;

[0026] Figure 4 This is a schematic diagram of the structure of the slow flow plate of this application.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. Bin body; 11. Main section; 12. Conical section; 121. Screw conveyor; 2. Arch breaking mechanism; 21. Vibrating disk; 22. Vibrating motor; 23. Elastic connecting member; 231. Sleeve; 232. Hanging rod; 233. Tension spring; 24. Blocking disk; 25. Transmission rod; 251. Rolling ball; 26. Spring; 3. Limiting member; 31. Anti-arc groove; 4. Reinforcement plate; 5. Slow flow plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 4 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0029] Reference Figure 1 and Figure 2 This embodiment provides an anti-blocking powder silo, including a silo body 1 and an arch breaking mechanism 2. The silo body 1 is composed of a main section 11 and a conical section 12. A screw conveyor 121 is provided at a discharge port at the bottom of the conical section 12. When the screw conveyor 121 is working, it can cause the powder stored in the silo body 1 to be discharged.

[0030] Among them, refer to Figure 2 and Figure 3 , the arch-breaking mechanism 2 is arranged inside the silo 1, and the arch-breaking mechanism 2 includes a vibration disk 21, a vibration motor 22, an elastic connector 23, a blocking disk 24 and a transmission member. Among them, the vibration disk 21 is arranged in an annular shape, and the vibration disk 21 is located in the middle of the conical section 12. A plurality of vibration motors 22 are arranged and installed in a circular array on the bottom surface of the vibration disk 21. When the vibration motor 22 is running, the vibration disk 21 will vibrate accordingly. The elastic connector 23 is arranged between the vibration disk 21 and the top wall of the silo 1, and is used to provide connection support for the vibration disk 21 and make the vibration disk 21 have an upward trend. The blocking disk 24 is arranged in an inverted cone shape, and the blocking disk 24 is vertically slidably connected to the cross truss in the middle of the vibration disk 21.

[0031] Among them, refer to Figure 2 and Figure 3 The elastic connecting member 23 includes a sleeve 231, a suspension rod 232 and a tension spring 233. The sleeve 231 is fixedly connected to the top wall of the bin body 1, the suspension rod 232 is slidably sleeved inside the sleeve 231, and the bottom end of the suspension rod 232 is fixedly connected to the vibration plate 21, and the tension spring 233 is fixedly connected between the sleeve 231 and the suspension rod 232.

[0032] Among them, refer to Figure 2 and Figure 3 The transmission member is arranged on the vibration disk 21 in a circumferential array, and the transmission member includes a transmission rod 25 and a spring 26. The transmission rod 25 is radially slidably connected to the vibration disk 21 through the spring 26, and the two ends of the transmission rod 25 can respectively abut the inner wall of the conical section 12 and the conical surface of the blocking disk 24.

[0033] When the powder is inside the silo 1, due to the influence of gravity, the powder will gather downward and cause the vibration plate 21 to move down to the lowest point. When the screw conveyor 121 carries out the powder discharge work, if the powder is arched in the conical section 12, the vibration motor 22 runs to make the vibration plate 21 vibrate, thereby breaking the arched powder. After the vibration plate 21 completes the arch breaking work at a lower point, with the cooperation of the sleeve 231, the suspension rod 232 and the tension spring 233, the vibration plate 21 will move from bottom to top and abut against the arched powder that may exist at a higher point, so as to meet the arch breaking requirements at different heights.

[0034] In the process of breaking the arch, due to the blocking effect of the blocking disk 24, the falling speed of the powder at the center of the bin body 1 will be slowed down, causing the powder at the center of the bin body 1 to move toward the circumferential position. At the same time, the transmission rod 25 can move with the vibration disk 21 and transmit the vibration to the inner wall of the conical section 12, causing the powder attached to the bin wall to flow downward. In the process of lifting and lowering the vibration disk 21, the transmission rod 25, the inner wall of the conical section 12 and the conical surface of the blocking disk 24 are affected by the contact relationship between the transmission rod 25, the inner wall of the conical section 12 and the conical surface of the blocking disk 24. The transmission rod 25 will be axially displaced inside the conical section 12 based on its own central axis, so that the relative heights of the vibrating plate 21 and the blocking plate 24 will change, so that the first gap between the vibrating plate 21 and the blocking plate 24 is inversely proportional to the second gap between the blocking plate 24 and the inner wall of the conical section 12 (that is, the former is reduced and the latter is increased or the former is increased and the latter is reduced), so that the falling speed of the powder inside the conical section 12 is kept as constant as possible, reducing the probability of blockage and arching phenomenon occurring again in the subsequent discharge process.

[0035] In addition, after the powder arch is broken, the powder will fall in large quantities. At this time, the transmission rod 25 and the spring 26 cooperate to play a certain buffering role on the vibration plate 21, so that the vibration plate 21 is in an up and down floating state, thereby reducing the impact force of the powder by slowing down the falling speed of the powder, and at the same time reducing the possibility of the powder arching again due to impact compression.

[0036] Reference Figure 2 and Figure 3 The top of the blocking disk 24 is arranged in a spherical dome shape, which is used to promote the powder blocked by the blocking disk 24 to disperse toward the circumferential position.

[0037] When the powder at the center of the silo 1 hits the blocking disk 24, the spherical arch design is more conducive to the movement of the powder at the center of the silo 1 toward the circumferential position, and at the same time can increase the receiving area of ​​the blocking disk 24 for the powder, thereby achieving a better buffering effect when the powder suddenly falls.

[0038] Reference Figure 2 and Figure 3 Both ends of the transmission rod 25 are rotatably connected with a ball 251, and the ball 251 is used to replace the transmission rod 25 to abut against the inner wall of the tapered section 12 or the tapered surface of the blocking disk 24.

[0039] Using the rolling ball 251 instead of the transmission rod 25 to abut against the inner wall of the tapered section 12 or the tapered surface of the blocking disk 24 can reduce the friction between the transmission rod 25 and the inner wall of the tapered section 12 or the tapered surface of the blocking disk 24 .

[0040] Reference Figure 3 A limiting member 3 is provided on the blocking disk 24, which is used to keep the ball 251 on the transmission rod 25 close to the blocking disk 24 in contact with the conical surface of the blocking disk 24. The limiting member 3 includes an anti-arc groove 31 provided at the bottom edge of the blocking disk 24, and the anti-arc groove 31 matches the ball 251 on the transmission rod 25 close to the blocking disk 24.

[0041] The anti-arc groove 31 is used to limit the rolling ball 251 on the transmission rod 25 close to the blocking disk 24 to prevent the rolling ball 251 on the transmission rod 25 close to the blocking disk 24 from slipping off the blocking disk 24.

[0042] Reference Figure 1 and Figure 3 A plurality of reinforcing plates 4 corresponding to the transmission rods 25 are arranged on the warehouse wall of the conical section 12 , and the shape of the reinforcing plates 4 matches the moving path of the transmission rods 25 .

[0043] The warehouse wall of the conical section 12 is specifically reinforced by the reinforcing plate 4 to prevent the warehouse wall of the conical section 12 from being deformed by the pressure of the transmission rod 25 .

[0044] Reference Figure 1 and Figure 4 The feed box arranged at the top of the main section 11 is internally provided with multiple layers of inclined slow flow plates 5, which are used to disperse the powder and reduce the impact velocity of the powder during feeding.

[0045] When the powder enters the bin body 1 , the powder is dispersed by the slow flow plate 5 , which not only makes the powder evenly distributed in the bin body 1 , but also reduces the impact speed of the powder.

[0046] The implementation principle of an anti-blocking powder silo in the embodiment of the present application is:

[0047] When the powder is inside the silo 1, due to the influence of gravity, the powder will gather downward and cause the vibration plate 21 to move down to the lowest point. When the screw conveyor 121 carries out the powder discharge work, if the powder is arched in the conical section 12, the vibration motor 22 runs to make the vibration plate 21 vibrate, thereby breaking the arched powder. After the vibration plate 21 completes the arch breaking work at a lower point, with the cooperation of the sleeve 231, the suspension rod 232 and the tension spring 233, the vibration plate 21 will move from bottom to top and abut against the arched powder that may exist at a higher point, so as to meet the arch breaking requirements at different heights.

[0048] During the arch breaking process, due to the blocking effect of the blocking disk 24, the falling speed of the powder at the center of the silo 1 will be slowed down, causing the powder at the center of the silo 1 to move toward the circumferential position. At the same time, the transmission rod 25 can move with the vibration disk 21 and transmit vibration to the inner wall of the conical section 12, causing the powder attached to the silo wall to flow downward.

[0049] During the lifting and lowering process of the vibration plate 21, affected by the abutment relationship among the transmission rod 25, the inner wall of the conical section 12 and the conical surface of the blocking plate 24, the transmission rod 25 will be axially displaced inside the conical section 12 with its own central axis as the reference through the cooperation of the spring 26, so that the relative height of the vibration plate 21 and the blocking plate 24 changes, so that the first gap between the vibration plate 21 and the blocking plate 24 is inversely proportional to the second gap between the blocking plate 24 and the inner wall of the conical section 12 (that is, the former is reduced and the latter is increased or the former is increased and the latter is reduced), so that the falling speed of the powder inside the conical section 12 is kept as constant as possible, reducing the probability of blockage and arching phenomenon occurring again in the subsequent discharge process.

[0050] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A blockage-proof powder silo, comprising a silo body (1) and an arch-breaking mechanism (2) arranged therein, wherein: The silo body (1) is composed of a main section (11) and a conical section (12), and a screw conveyor (121) is provided at a discharge port at the bottom of the conical section (12) for discharging powder in the silo body (1), characterized in that the arch breaking mechanism (2) comprises: A vibration plate (21) is arranged in an annular shape and is located in the middle of the conical section (12); a plurality of vibration motors (22) capable of causing the vibration plate (21) to vibrate are arranged on the bottom surface of the vibration plate (21); An elastic connecting member (23) is arranged between the vibration plate (21) and the top wall of the bin body (1) and is used to provide connection support for the vibration plate (21) and to enable the vibration plate (21) to have an upward tendency; The blocking plate (24) is vertically slidably connected to a cross truss in the middle of the vibration plate (21), and the blocking plate (24) is arranged in an inverted cone shape. A plurality of transmission rods (25) are radially slidably connected to the vibration plate (21) via springs (26), and the two ends of the transmission rods (25) can respectively abut against the inner wall of the conical section (12) and the conical surface of the blocking plate (24).

2. The anti-blocking powder silo according to claim 1, characterized in that: The top of the blocking disk (24) is arranged in a spherical dome shape, and is used to promote the powder blocked by the blocking disk (24) to disperse toward a circumferential position.

3. The anti-blocking powder silo according to claim 1, characterized in that: The elastic connecting member (23) comprises a sleeve (231) fixedly connected to the top wall of the bin body (1) and a suspension rod (232) slidably sleeved inside the sleeve (231); the bottom end of the suspension rod (232) is fixedly connected to the vibration plate (21); and a tension spring (233) is fixedly connected between the sleeve (231) and the suspension rod (232).

4. The anti-blocking powder silo according to claim 1, characterized in that: Both ends of the transmission rod (25) are rotatably connected with rolling balls (251), and the rolling balls (251) are used to replace the transmission rod (25) to abut against the inner wall of the tapered section (12) or the tapered surface of the blocking disk (24).

5. The anti-blocking powder silo according to claim 4, characterized in that: The blocking disc (24) is provided with a limit member (3) for maintaining a contact state between the rolling ball (251) on the transmission rod (25) on the side close to the blocking disc (24) and the conical surface of the blocking disc (24).

6. The anti-blocking powder silo according to claim 5, characterized in that: The limiting member (3) comprises an arc-reflecting groove (31) arranged at the bottom edge of the blocking disk (24), and the arc-reflecting groove (31) matches a rolling ball (251) on a side of the transmission rod (25) close to the blocking disk (24).

7. The anti-blocking powder silo according to claim 1, characterized in that: A plurality of reinforcing plates (4) corresponding one to one with the transmission rods (25) are arranged on the bin wall of the conical section (12), and the shape of the reinforcing plates (4) matches the moving path of the transmission rod (25).

8. The anti-blocking powder silo according to claim 1, characterized in that: A plurality of inclined slow-flow plates (5) are arranged inside the feed box arranged at the top of the main section (11), and are used to disperse the powder and reduce the impact speed of the powder during feeding.

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