Bentonite raw material bin discharging device

Abstract

The utility model discloses a kind of bentonite raw material bin discharging devices, technical scheme is as follows: including bin and the discharge outlet of lower part thereof, the discharge outlet lower part is connected with blanking tube, blanking tube outside is fixed with frame type frame, the two sides of frame type frame are symmetrically inserted with several adjustment insertion rods immediately and extended to blanking tube inside.The utility model is adjusted by setting insertion rod array structure, the shape and size of blanking passage can be accurately controlled, the problem such as uneven distribution of material caused by traditional insertion plate valve, flow rate control inaccuracy is solved, with the advantages of improving material falling uniformity, realizing fine flow rate control, enhancing operation convenience etc.

Description

Technical Field

[0001] This utility model relates to the field of bentonite raw material control, specifically to a bentonite raw material silo unloading device. Background Technology

[0002] Bentonite raw material is mainly composed of clay rock blocks made up of montmorillonite (typically 40%-90% content). During processing, it falls from the hopper outlet into a discharge pipe, and then is transferred to a conveyor belt for further processing. Traditionally, a gate valve is installed at the discharge pipe to control the falling process and flow rate of the bentonite raw material. However, this conventional gate valve has significant drawbacks: firstly, the material channel formed when the gate is open cannot remain centered, resulting in uneven material distribution; secondly, the adjustment precision for the falling speed is insufficient, making fine control difficult; and thirdly, the existing structure cannot flexibly adjust the shape parameters of the discharge outlet, severely affecting the uniformity of material falling. Furthermore, traditional gate valves suffer from problems such as loosening of the adjustment mechanism and inconvenient operation during long-term use, failing to meet the dual requirements of modern production for both material feeding accuracy and ease of operation. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a bentonite raw material silo unloading device.

[0004] This utility model is achieved through the following technical solution:

[0005] This application provides a bentonite raw material silo unloading device, the technical solution of which is as follows: it includes a silo and a discharge port at its lower part, a discharge pipe is connected to the lower part of the discharge port, a frame is fixed on the outside of the discharge pipe, and several adjacent adjusting rods extending into the discharge pipe are symmetrically inserted on both sides of the frame.

[0006] Furthermore, this application also proposes that the two ends of the frame extend outward from the material drop tube and are provided with a stable placement area, and an electromagnet for fixing the adjustment rod is installed on the upper part of the stable placement area.

[0007] Furthermore, this application also proposes that the adjusting rod is provided with a limiting block to prevent it from disengaging from the frame, and that the adjusting rod is provided with a scale.

[0008] Furthermore, this application also proposes that several guide posts for passing through the adjusting rod are provided on both sides of the material discharge pipe.

[0009] Furthermore, this application also proposes that a gap of 2-4 mm be left between adjacent adjusting rods.

[0010] Furthermore, this application also proposes that the width of several adjacent adjusting rods matches the internal width dimension of the discharge tube.

[0011] Furthermore, this application also proposes that the end of the adjusting rod is connected to a handle, and the handles of adjacent adjusting rods are arranged vertically.

[0012] Furthermore, this application also proposes that the top of the frame be bolted to the connection between the frame and the flange of the discharge pipe.

[0013] Compared with existing technologies, the advantages of this utility model are: by setting an adjustable insert array structure, this utility model can accurately control the shape and size of the material drop channel, solving the problems of uneven material distribution and inaccurate flow rate control caused by traditional insert valves. It has the advantages of improving the uniformity of material drop, achieving fine flow rate control, and enhancing the ease of operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram showing the connection between the insertion rod, the material drop tube, and the frame.

[0016] Figure 3 This is a schematic diagram of the closed state of the plug rod in this practical application;

[0017] Figure 4 This is a diagram illustrating how to open the plug rod in this practical application;

[0018] In the diagram: 1. hopper; 2. discharge port; 3. discharge pipe; 4. frame; 5. adjusting rod; 6. handle; 7. electromagnet; 8. scale; 9. limit block; 10. guide column. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0020] like Figure 1 As shown, this application proposes a bentonite raw material silo unloading device, including a silo and a discharge port at its lower part. A discharge pipe is connected to the lower part of the discharge port. A frame is fixed on the outside of the discharge pipe. Several adjusting rods that are adjacent to each other and extend into the discharge pipe are symmetrically inserted on both sides of the frame.

[0021] The silo stores bentonite raw materials, and its lower outlet is used for discharging the materials. A discharge pipe is connected below the outlet to guide the raw materials downwards. A frame is fixed to the outside of the discharge pipe as a support structure. Adjustable rods are symmetrically inserted on both sides of the frame; adjusting the insertion depth of the rods controls the opening size of the discharge pipe (e.g., ...). Figure 3 , 4(As shown). The adjusting rods can be made of metal to ensure strength and wear resistance. The number of adjusting rods can be adjusted according to the size of the feed tube, usually 10-20 rods are provided. The ends of the adjusting rods can be equipped with anti-slip textures or handles for easy manual adjustment.

[0022] This technical solution, through an adjustable insert structure, allows for flexible control of the opening size and shape of the material discharge pipe, thereby precisely regulating the material's falling speed and flow rate. Compared to traditional slide gate valves, this structure achieves uniform material discharge in the central area, preventing material accumulation and blockage. The symmetrically arranged adjustable inserts can create various opening shapes to adapt to the conveying needs of different materials. The device is simple in structure, easy to operate, and effectively solves the problems of uneven bentonite raw material discharge and inconvenient control.

[0023] like Figure 1 As shown, this application further proposes that the two ends of the frame extend outward from the material drop tube and are provided with a stable placement area, and an electromagnet for fixing the adjustment rod is installed on the upper part of the stable placement area.

[0024] The stable placement area is formed by extending the side of the frame, and its length can be designed from 100-300mm according to actual installation requirements. The electromagnet can be powered by DC or AC, with a rated attraction force of 50-200N, and is fixed to the frame of the stable placement area by bolts or welding. The control circuit of the electromagnet can be controlled by a manual switch.

[0025] Specifically, this technical solution solves the problem of easy displacement of the slide valve adjustment mechanism under vibration conditions by installing an electromagnet in the extension section of the frame. After the adjustment rod is adjusted, the electromagnet is energized to generate magnetic force to firmly attract it, avoiding displacement caused by material impact. Compared with mechanical locking devices, electromagnetic fixing has the advantages of fast response speed, remote control capability, and no decrease in fixing force due to mechanical wear. The scale on the adjustment rod works in conjunction with the electromagnet to achieve a precise opening degree maintenance function, ensuring uniform material drop. This structure is particularly suitable for bentonite conveying conditions that require frequent adjustments to the feed rate.

[0026] like Figure 2 As shown, this application further proposes that the adjusting rod is provided with a limiting block to prevent it from disengaging from the frame, and that the adjusting rod is provided with a scale.

[0027] The limiting block can be a welded or bolted metal block, the thickness of which needs to be greater than the gap of the frame's insertion hole, specifically 3-5mm, and it should be located within the stable placement area. The scale can be laser-etched or adhesive-mounted, with a scale accuracy of 1mm, and the scale range should cover the effective stroke of the adjusting rod. As a preferred embodiment, the limiting block and the scale can be integrated into the same metal kit, which is fixed to the adjusting rod by an interference fit.

[0028] This solution addresses the issues of rod detachment and insufficient positioning accuracy during adjustment through a dual guarantee of physical blocking by a limiting block and a graduated scale. Specifically, the limiting block effectively prevents rod displacement caused by material impact, while the scale allows operators to precisely control the rod insertion depth. Compared to traditional slide gate valves, this design achieves a position control accuracy of 0.5mm and extends the maintenance cycle to three times that of the original technology. When material passes through the discharge pipe, the gap tolerance between adjacent rods can be stably controlled within ±0.3mm, thereby ensuring the uniformity of bentonite raw material descent.

[0029] like Figure 2 As shown, this application further proposes that several guide posts for passing through the adjusting rod are provided on both sides of the material discharge pipe.

[0030] The guide posts can be made of wear-resistant alloy material, with a recommended diameter range of 10-20mm and a length exceeding the wall thickness of the feed tube by 5-10mm. The guide posts can be arranged at equal intervals, with the center-to-center distance between adjacent guide posts preferably 30-50mm. The guide posts can be fixed to the feed tube by welding or threaded connection, with threaded connection facilitating later maintenance and replacement. A polytetrafluoroethylene (PTFE) bushing can be installed in the inner hole of the guide post to reduce the frictional resistance of the adjusting rod. This is one preferred embodiment.

[0031] This technical solution utilizes guide posts on both sides of the discharge pipe to allow the adjusting rod to move precisely along a predetermined trajectory. The guide posts not only define the movement path of the adjusting rod but also effectively prevent it from deviating during operation. Specifically, when the operator adjusts the insertion depth of the rod using the handle, the guide posts ensure that multiple rods move in parallel, thus forming a uniformly distributed material channel. Compared to traditional guideless slide gate valves, this structure significantly improves the controllability of the discharge opening shape, enabling the bentonite raw material to form a stable material curtain, avoiding material deviation or accumulation. Furthermore, the guide posts reduce direct friction between the rod and the pipe wall, extending the equipment's service life.

[0032] Furthermore, this application also proposes that a gap of 2-4 mm be left between adjacent adjusting rods.

[0033] This technical solution creates a uniformly distributed array of slots by precisely controlling the spacing of the adjusting rods. While ensuring adequate support and interception of the material, it facilitates the operation of adjacent adjusting rods. In practice, a 3mm spacing has been verified as the optimal balance between anti-clogging and flow control effects.

[0034] Furthermore, this application also proposes that the width of several adjacent adjusting rods matches the internal width dimension of the discharge tube.

[0035] Specifically, the width design of the adjusting rods needs to match the internal width of the discharge tube. As a preferred implementation, the adjusting rods can be arranged with equal widths, and their total width maintains a 1:1 ratio with the distance between the inner walls of the discharge tube.

[0036] This technical solution achieves complete control over the material falling channel through precisely matched width relationships. When the adjusting rod is withdrawn, the resulting gap distribution is uniform, avoiding the eccentric material falling phenomenon caused by traditional slide gate valves. Furthermore, due to the high width matching degree, no material jamming or leakage occurs during adjustment, ensuring the linearity of flow regulation. In specific implementation, CNC machining can ensure that the width tolerance of the adjusting rod is controlled within ±0.1mm, and the fitting clearance with the inner wall of the falling pipe is maintained between 0.5-1mm. This ensures both smooth rod movement and a sealing effect when closed.

[0037] like Figure 1 As shown, this application further proposes that the end of the adjusting rod is connected to a handle, with the handles of adjacent adjusting rods positioned vertically. Specifically, the handles can be made of metal or plastic. As a preferred embodiment, the staggered arrangement of adjacent handles can avoid mutual interference during operation; for example, the upper handle is located 10cm from the top of the adjusting rod, and the lower handle is located 10cm from the bottom of the adjacent adjusting rod.

[0038] Therefore, this technical solution, through a staggered handle structure, allows operators to independently adjust the insertion depth of adjacent inserts. Specifically, when it is necessary to adjust the cross-sectional area of ​​the material flow inside the discharge pipe, different inserts can be pulled sequentially using the vertically distributed handles, thereby forming discharge channels of different shapes and sizes. This design solves the problems of traditional slide gate valves having a single opening shape and inconvenient adjustment. The staggered arrangement of the handles is particularly convenient for precise operation in narrow spaces. Compared with existing technologies, this solution not only achieves gradient control of material flow rate but also creates asymmetrical discharge ports through differentiated adjustment, which is beneficial for improving the flow uniformity of viscous materials such as bentonite.

[0039] like Figure 1As shown, this application further proposes that the top of the frame be bolted to the connection between the frame and the flange of the discharge pipe.

[0040] Specifically, a flange connection is used between the top of the frame and the discharge pipe, and it is fixed with bolts. The flange connection can use either a ring flange or a square flange, with a preferred flange thickness of 10-20mm, and high-strength bolts of M10-M16 specifications. As a preferred embodiment, a rubber gasket can be installed on the flange connection surface to prevent dust leakage. Furthermore, the bolts can be symmetrically arranged, with a preferred number of 4-8 bolts and a uniform bolt spacing. The resulting connection structure has reliable mechanical strength and stability.

[0041] To address this, the technical solution employs a flange bolt connection to achieve a robust connection between the frame and the feed tube. The flange connection provides a large contact area, while the bolt fixation ensures the reliability of the connection, effectively solving the problems of deformation and stress concentration that are prone to occur with traditional welding methods. Furthermore, this connection method facilitates disassembly and maintenance; when the feed tube needs to be replaced or repaired, only the bolts need to be removed without damaging the overall structure. Specifically, this connection method ensures structural strength while improving the maintainability of the equipment, making it particularly suitable for operating conditions requiring frequent adjustments to the position of the feed rod.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bentonite raw material silo feeding device, comprising a silo (1) and a discharge port (2) at its lower part, wherein a discharge pipe (3) is connected to the lower part of the discharge port (2), characterized in that: A frame (4) is fixed on the outside of the material drop tube (3), and several adjusting rods (5) are symmetrically inserted on both sides of the frame (4) and extend into the material drop tube (3).

2. The bentonite raw material silo feeding device according to claim 1, characterized in that: The two ends of the frame (4) extend outward from the material drop pipe (3) and are provided with a stable placement area. An electromagnet (7) for fixing the adjustment rod (5) is installed on the upper part of the stable placement area.

3. The bentonite raw material silo feeding device according to claim 2, characterized in that: The adjusting rod (5) is provided with a limiting block (9) to prevent it from disengaging from the frame (4), and the adjusting rod (5) is provided with a scale (8).

4. The bentonite raw material silo feeding device according to claim 1, characterized in that: Several guide posts (10) for passing through the adjusting rod (5) are provided on both sides of the material drop tube (3).

5. The bentonite raw material silo feeding device according to claim 3, characterized in that: A gap of 2-4mm is left between adjacent adjusting rods (5).

6. The bentonite raw material silo feeding device according to claim 3, characterized in that: The width of several adjacent adjusting rods (5) matches the internal width of the discharge tube (3).

7. The bentonite raw material silo feeding device according to claim 6, characterized in that: The end of the adjusting rod (5) is connected to a handle (6), and the handles (6) of adjacent adjusting rods (5) are arranged vertically.

8. The bentonite raw material silo feeding device according to claim 1, characterized in that: The top of the frame (4) is bolted to the flange connection between the frame (4) and the discharge pipe (3).

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