Canvas protection device applied to silo discharging pipe
By installing a buffer plate and a blower at the silo discharge pipe, the falling speed of the material is buffered, the canvas is protected, the problem of easy damage to the canvas is solved, and the system achieves stable operation and cost reduction.
Patent Information
- Application Number
- CN202423260460.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The canvas at the silo discharge port is easily damaged by the impact of fresh alumina being discharged, affecting the normal feeding of the dust collector.
A buffer plate and a buffer baffle are installed at the outlet of the feed pipe to slow down the falling speed of the material, and a blower is used to assist in the material conveying and protect the canvas.
Extend the lifespan of the canvas, reduce the frequency of replacement, ensure stable system operation, and reduce costs.
Smart Images
Figure CN223751793U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of aluminum electrolysis, in particular to a canvas protection device applied to a silo discharge pipe. BACKGROUND
[0002] Aluminum is obtained by electrolyzing aluminum oxide. In modern aluminum electrolysis industry production, the cryolite-alumina fused salt electrolysis method is usually adopted. The electrochemical reaction of the method is carried out in an electrolytic cell. Waste gas is generated in the reaction process. The waste gas is introduced into a flue gas purification system for purification treatment, so that the content of harmful components (fluoride) in the waste gas is reduced. Then, fluorine-carrying aluminum oxide gas is sent into a bag-type dust collector for gas-solid separation. Finally, the gas is exhausted, and solid fluorine-carrying aluminum oxide is sent back to the electrolytic cell through an ultra-concentration phase conveying chute to participate in production.
[0003] The fluorine-carrying aluminum oxide gas is generated by adding aluminum oxide into flue gas, so that the aluminum oxide reacts with harmful gas (fluoride). In the prior art, fresh aluminum oxide in the ash hopper is sent to the silo through a pneumatic chute and a bucket elevator, and then is sent to the flue gas purification system through the conveying system of the silo. However, the fresh silo discharge port is connected with the chute through the discharge pipe, and the discharge of the fresh silo discharge port is easy to cause damage to the canvas, thereby affecting the normal feeding of the dust collector. CONTENT OF THE INVENTION
[0004] The application aims to provide a device capable of protecting the canvas at the fresh silo discharge port.
[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a canvas protection device applied to a silo discharge pipe, comprising:
[0006] a feeding port, a discharge pipe, a buffer plate and a bearing part;
[0007] The inlet of the feeding port is open, the outlet of the feeding port is connected with one end of the discharge pipe, and a buffer plate is arranged below the other end of the discharge pipe;
[0008] The buffer plate has an inclined plane, and the outlet of the discharge pipe is located at least partially above the inclined plane;
[0009] The bearing part is provided with a canvas, and the inclined plane and the extension plane of the canvas along the feeding direction form an obtuse angle.
[0010] In some embodiments, the feeding port is a reverse conical structure or a hemispherical structure, and the inlet is the part with a large diameter.
[0011] In some embodiments, the device further comprises:
[0012] A buffer baffle is arranged on the inner side wall of the discharge pipe, the buffer baffle has a downwardly inclined surface, and the projection of the buffer baffle along the axial direction of the discharge pipe coincides with the cross-sectional part of the discharge pipe.
[0013] In some embodiments, the buffer baffle comprises a buffer inclined plate and a horizontal support plate, the buffer inclined plate is a semi-elliptical structure, the horizontal support plate is a semicircular structure, the straight edge of the buffer inclined plate and the straight edge of the horizontal support plate are connected and form an angle, and the curved edge of the buffer inclined plate and the curved edge of the horizontal support plate are fixedly connected to the inner side wall of the discharge pipe.
[0014] In some embodiments, a plurality of buffer baffles are arranged on the inner side wall of the discharge pipe in a staggered manner, and the inclined direction of the buffer inclined plate of the buffer baffle at the lowermost position is opposite to the inclined direction of the inclined surface of the buffer baffle.
[0015] In some embodiments, a spare space is formed below the buffer baffle and above the bearing part, a first air blower is arranged in the spare space or outside the spare space, and the first air blower is used to blow air to the bottom of the inclined surface of the buffer baffle through the spare space.
[0016] In some embodiments, a ventilation hole area is arranged on the canvas, a second air blower is arranged below the canvas at a position corresponding to the ventilation hole area, and the second air blower is used to blow the material on the canvas through the ventilation hole area.
[0017] In some embodiments, the air outlet direction of the second air blower is vertically upward.
[0018] In some embodiments, the air outlet direction of the second air blower is upward and inclined along the air outlet direction of the first air blower.
[0019] In some embodiments, the application further comprises:
[0020] A cover plate is arranged above the canvas to block the material blown in the vertical direction.
[0021] The canvas protection device applied to the discharge pipe of the silo in the embodiments of the present application is arranged below the outlet of the discharge pipe to slow down the impact of the material on the canvas during the discharging process, thereby playing a protective role on the canvas, prolonging the service life, and further reducing the cost. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 FIG. 1 is a structural schematic diagram of the canvas protection device applied to the discharge pipe of the silo in the first embodiment of the present application;
[0023] Figure 2This is a cross-sectional view of the canvas protection device applied to the silo feed pipe according to Embodiment 2 of this application;
[0024] Figure 3 This is a schematic diagram of the canvas protection device applied to the silo discharge pipe according to Embodiment 3 of this application. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] The canvas protection device applied to the silo discharge pipe according to the embodiments of this application can be applied to the exhaust gas purification treatment in the aluminum electrolysis field. For example, it can be applied to the conveying system of the silo to protect the canvas in the conveying system. Specifically, it can protect the canvas by buffering the impact of the material falling from the silo discharge port.
[0027] like Figure 1 The diagram shown is a structural schematic of a canvas protection device applied to the silo discharge pipe according to Embodiment 1 of this application. The canvas protection device applied to the silo discharge pipe in this embodiment includes:
[0028] The system comprises an inlet 1, a discharge pipe 2, a buffer plate 3, and a support section 4. The inlet of inlet 1 is open, and its outlet is connected to one end of the discharge pipe 2. Typically, the inlet diameter of inlet 1 is larger than its outlet diameter; for example, inlet 1 may be an inverted conical or hemispherical structure, with the larger diameter opening being the inlet. By configuring inlet 1 in this way, more material is received at the inlet than exits at the outlet, enabling continuous feeding.
[0029] Below the other end of the feed pipe 2, a buffer plate 3 is provided. The buffer plate 3 has an inclined plane, and the outlet of the feed pipe 2 is at least partially located directly above the inclined plane. This ensures that the material flowing out through the feed pipe 2 can fall partially or completely onto the inclined plane of the buffer plate 3. After being buffered on the inclined plane, it slides slowly along the direction of the inclined plane onto the canvas of the support section 4. Then, driven by the wind power of the first blower 6, it is conveyed along the support section 4 to the flue gas purification system for purification of the exhaust gas.
[0030] In this embodiment, a gap is formed below the buffer plate 3 and above the support part 4. That is, the buffer plate 3 may not be placed on or in contact with the support part 4, but rather above it, leaving a certain distance between them to form a gap. The first blower 6 is located within or outside this gap and blows air through the gap to the bottom of the inclined plane of the buffer plate. The material falling from the buffer plate enters the flue gas purification system along the support part 4 under the action of the air force of the first blower 6.
[0031] A canvas is provided on the bearing part 4. The inclined plane forms an obtuse angle with the extended plane of the canvas along the feeding direction. That is, the angle formed by the contact position between the inclined plane through which the material passes and the canvas is an obtuse angle.
[0032] In existing silo conveying systems, no buffer plates are installed. The material flowing out through the discharge pipe has a certain initial velocity. The material falls vertically onto the canvas, causing the material velocity to become zero in the vertical direction. The canvas bears the impact of the material. Over time, this will cause wear and tear on the canvas. Moreover, the canvas is more expensive than the buffer plate, and the replacement cycle is relatively longer, which in turn affects the stable operation time of the system.
[0033] A buffer plate installed below the feed pipe can replace the canvas to withstand the impact of the material, slow down the material speed, and thus protect the canvas. At the same time, the buffer plate is easy to replace, thus ensuring the stable operation of the system.
[0034] like Figure 2 The figure shown is a cross-sectional view of the canvas protection device applied to the silo discharge pipe according to Embodiment 2 of this application. Based on Embodiment 1, the canvas protection device applied to the silo discharge pipe in this embodiment further includes a buffer baffle 202 disposed on the inner side wall of the discharge pipe 2. The buffer baffle 202 has a downwardly inclined surface, and the projection of the buffer baffle 202 along the axial direction of the discharge pipe 2 partially coincides with the cross-section of the discharge pipe 2. That is, the buffer baffle 202 partially blocks the cross-section of the discharge pipe 2, but does not completely block the discharge pipe 2.
[0035] The buffer baffle 202 includes a buffer inclined plate and a horizontal support plate. The buffer inclined plate has a semi-elliptical structure, and the horizontal support plate has a semi-circular structure. The straight edge of the buffer inclined plate is connected to the straight edge of the horizontal support plate, and the buffer inclined plate and the horizontal support plate are at a certain angle. The curved edge of the buffer inclined plate and the curved edge of the horizontal support plate are fixedly connected to the inner wall of the feed pipe 2.
[0036] In some preferred embodiments, the buffer baffle 202 is arranged below the downcomer 2 to buffer the acceleration of the material under the action of its own gravity when falling in the downcomer, and after being buffered through the buffer baffle 202, the material falls on the buffer plate 3 at a smaller speed. The buffer inclined plate of the buffer baffle 202 plays a role of buffering and guiding flow, and the horizontal support plate is used to support and reinforce the buffer inclined plate. In some embodiments, the horizontal support plate can also not be arranged, and the fixing of the buffer inclined plate is completed by welding the buffer inclined plate and the arc-shaped edge with the inner side wall of the downcomer 2.
[0037] By arranging the buffer baffle, the flow and flow rate of the material can be controlled, and the downflow speed of the material is slowed down to avoid the impact on the canvas caused by the material still having a large speed after passing through the buffer plate 3.
[0038] In order to achieve better control effect, a plurality of buffer baffles (for example, the buffer baffle 201 and the buffer baffle 202 in Figure 2 ) can be arranged on the inner side wall of the downcomer 2 in a staggered manner. The inclination direction of the buffer inclined plate of the buffer baffle located at the lowermost position is opposite to the inclination direction of the inclined plane of the buffer plate 3, so that the flow direction of the material after passing through the buffer baffle is opposite to the flow direction on the inclined plane of the buffer plate 3, and the speed of the material in the direction along the inclined plane of the buffer plate 3 is zero when falling on the buffer plate 3, so that a better buffering effect is achieved.
[0039] As shown in Figure 3 , it is a structure schematic diagram of the canvas protection device applied to the downcomer of the silo in the third embodiment of the present application. The canvas protection device applied to the downcomer of the silo in the present embodiment is further provided with a vent hole area on the canvas on the basis of the above-mentioned embodiments, and a second air blower 5 is arranged at a position corresponding to the vent hole area below the canvas, which is used to blow up the material on the canvas through the vent hole area.
[0040] The vent hole area is composed of a plurality of regular or irregularly arranged vent holes 401 on the canvas. A plurality of vent hole areas can be arranged on the canvas, and one second air blower 5 is arranged below each vent hole area. The air blown by the air blower passes through the canvas through the vent holes, mixes the material on the canvas with the air, and is blown into the flue gas purification system under the action of the first air blower 6.
[0041] Generally, the air outlet direction of the second air blower is vertically upward. In some other embodiments, the first air blower can also not be arranged, the air outlet direction of the second air blower is upward, and is inclined along the air outlet direction of the first air blower. That is, the air outlet direction of the second air blower is obliquely upward, and has a component in the air outlet direction of the first air blower, so as to replace the first air blower. In addition, in order to prevent the material from overflowing from the bearing part under the action of the air blower, a cover plate can also be arranged above the canvas to block the material blown vertically.
[0042] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details in the above-described embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all belong to the protection scope of the present application.
[0043] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present application will not further describe various possible combinations.
[0044] In addition, various different embodiments of the present application can also be combined in any manner, as long as they do not deviate from the technical concept of the present application, and they should also be considered as disclosed by the present application.
Claims
1. A canvas protection device for application at the discharge pipe of a silo, characterized in that The device comprises: a feeding inlet, a discharging pipe, a buffer plate and a supporting part; the inlet of the feeding inlet is open, and the outlet of the feeding inlet is connected with one end of the discharging pipe, and a buffer plate is arranged below the other end of the discharging pipe; the buffer plate has an inclined plane, and the outlet of the discharging pipe is at least partially located above the inclined plane; the supporting part is provided with a canvas, and the inclined plane and the extension plane of the canvas along the feeding direction form an obtuse angle.
2. The canvas protection device according to claim 1, wherein the feeding inlet is in a reverse conical structure or a hemispherical structure, and the inlet with a larger diameter is the inlet.
3. The canvas protection device of claim 2, wherein, Further comprising: a buffer baffle arranged on the inner side wall of the discharging pipe, the buffer baffle has a downwardly inclined surface, and the projection of the buffer baffle along the axial direction of the discharging pipe partially overlaps with the cross section of the discharging pipe.
4. The canvas protection device according to claim 3, wherein the buffer baffle comprises a buffer inclined plate and a horizontal support plate, the buffer inclined plate is in a semi-elliptical structure, the horizontal support plate is in a semicircular structure, the straight line edge of the buffer inclined plate and the straight line edge of the horizontal support plate are connected and form an angle, and the curved edge of the buffer inclined plate and the curved edge of the horizontal support plate are fixedly connected with the inner side wall of the discharging pipe.
5. The canvas protection device according to claim 3, wherein a plurality of buffer baffles are arranged on the inner side wall of the discharging pipe in a staggered manner, and the inclined direction of the buffer inclined plate of the buffer baffle located at the lowermost position is opposite to the inclined direction of the inclined plane of the buffer plate.
6. The canvas protection device according to claim 5, wherein a spare space is formed below the buffer plate and above the supporting part, a first air blower is arranged in the spare space or outside the spare space, and the first air blower is used for blowing air to the bottom of the inclined plane of the buffer plate through the spare space.
7. The canvas protection device according to claim 1 or 6, wherein a vent hole area is arranged on the canvas, a second air blower is arranged below the canvas and corresponding to the vent hole area, and the second air blower is used for blowing the material on the canvas through the vent hole area.
8. The canvas protection device according to claim 7, wherein the air outlet direction of the second air blower is vertically upward.
9. The canvas protection device according to claim 7, wherein the air outlet direction of the second air blower is upward and inclined along the air outlet direction of the first air blower.
10. The canvas protection device of claim 7, wherein, Further comprising: a cover plate arranged above the canvas, used for blocking the material blown in the vertical direction.