Granule feeding system for stabilized soil stirring equipment
By installing pressure plates and adjustment plates in the feed silo of the stabilized soil mixing equipment, the problems of bentonite clumping and inaccurate metering during feeding are solved, achieving higher uniformity and accuracy, and improving the soil quality and equipment operating efficiency.
Patent Information
- Application Number
- CN202422688976.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In the prior art, bentonite is prone to compaction and agglomeration and short-term interruption during feeding and metering, which affects the uniformity of the mixture and the metering accuracy.
A pressure plate is set inside the feeding silo to form a conical structure. The bentonite falls through the gap between the pressure plate and the side wall of the silo. A baffle and an adjustment plate are set at the silo outlet to control the feeding path and ensure uniformity and metering accuracy.
It effectively avoids the clumping and short-term material interruption of bentonite, improves the uniformity and metering accuracy of the mixture, reduces material waste and environmental pollution, and improves construction quality and market competitiveness.
Smart Images
Figure CN223339722U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of research on anti-seepage soil materials for water conservancy and hydropower projects, and specifically to a granular material feeding system for stabilized soil mixing equipment. Background Art
[0002] Research on anti-seepage soil materials for hydropower projects is a key technical issue in supported earth core rockfill dams. Core wall anti-seepage soil materials typically have very high requirements, requiring not only anti-seepage performance but also good mechanical properties. Sometimes, soil near a project site cannot be used directly as anti-seepage soil material and requires modification before it can be used as such.
[0003] In the process of soil modification, a stabilized soil mixing station is generally used. It is a collection of machines and equipment for producing stabilized soil, mixing various mixed materials into stabilized soil. The stabilized soil mixing station mainly consists of three parts: the granular material feeding and metering system, the transmission and mixing system, and the electrical automation control system. Figure 1 As shown in .
[0004] The granular material feeding and metering system is equipped with three feeding and metering devices, one for each type of material: soil, graded gravel, and bentonite. The feeding and metering device consists of a hopper, a forced-pull belt feeder, and a belt scale. The forced-pull belt feeder removes material from the hopper and transfers it to the corresponding electronic belt scale for weighing. After weighing, the material is transferred to the aggregate conveyor and then fed into the mixer via a belt conveyor.
[0005] Bentonite feed metering devices utilize a fine-grained powder, comprising less than 10% of the total mixture mass, and require high feed uniformity. However, existing bentonite feed metering systems have found that the bentonite can compact and clump together as it falls from the silo, resulting in temporary interruptions and affecting the uniformity of the mixture at the feed end. Furthermore, the bentonite metering accuracy cannot be guaranteed to be within the specified tolerance range.
[0006] In view of this, this patent application is filed. Utility Model Content
[0007] The purpose of the utility model is to provide a granular material feeding system for stabilized soil mixing equipment, which solves the problem that the existing bentonite is compacted and clumped when falling, which affects the uniformity of the mixed material at the feeding end and the measurement accuracy.
[0008] The utility model is achieved through the following technical solutions:
[0009] The purpose of the present utility model is to provide a granular material feeding system for stabilized soil mixing equipment, comprising a feeding silo and a belt conveyor, wherein the feeding silo is arranged above the belt conveyor, the feeding silo has a silo inlet and a silo outlet, and a pressure plate is provided inside the feeding silo, the middle part of the pressure plate protrudes toward the silo inlet, the end of the pressure plate extends toward the silo outlet, and there is a gap between the edge of the pressure plate and the inner side wall of the feeding silo.
[0010] In an optional embodiment, the pressure plate is composed of two straight plates, one end of the two straight plates are fixedly connected, the two straight plates form a conical angle at the connection, and there is a gap between the edges of the two straight plates and the side walls of the feeding silo.
[0011] In an optional embodiment, the angle between the two straight plates is 137.14°, and both ends of the two straight plates are fixedly connected to the inner wall of the feeding silo.
[0012] In an optional embodiment, the diameter of the silo inlet is larger than the diameter of the feeding outlet, and the distance between the outermost ends of the two straight plates is larger than the diameter of the silo outlet.
[0013] In an optional embodiment, a baffle is provided at the outlet of the silo, and the baffle is an enclosing plate.
[0014] In an optional embodiment, the distance between the lower edge of the baffle and the belt conveyor below is less than 10 mm.
[0015] In an optional embodiment, the width of the baffle is 100 mm.
[0016] In an optional embodiment, an adjustment plate is further provided at the outlet of the silo. The adjustment plate is located in the enclosed space of the baffle, and the side wall of the adjustment plate is fixedly connected to the inner side wall of the baffle.
[0017] In an optional embodiment, the regulating plate is arranged at a side of the silo outlet close to the direction of particle blending.
[0018] The advantages and beneficial effects of the present invention compared to the prior art are:
[0019] The utility model adds a pressure plate above the belt conveyor below the silo, so that the bentonite can fall along the gap between the silo and the pressure plate to the belt conveyor, thereby preventing the material from clumping and temporarily interrupting the material feeding. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:
[0021] Figure 1 Schematic diagram of the existing stabilized soil mixing plant.
[0022] Figure 2 A schematic structural diagram of a granular material feeding system for a stabilized soil mixing device provided in one embodiment of the present invention.
[0023] Figure 3 This is a structural schematic diagram of a granular material feeding system for stabilized soil mixing equipment provided in another embodiment of the present invention.
[0024] Figure 4 It is a structural diagram of the matching of the baffle and the adjustment plate.
[0025] Markings and corresponding parts names in the accompanying drawings:
[0026] 1-feeding silo, 2-belt conveyor, 3-pressure plate, 301-straight plate, 4-baffle, 5-adjustment plate. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.
[0028] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that these specific details are not necessarily required to practice the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not described in detail to avoid obscuring the present invention.
[0029] Throughout this specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout this specification do not necessarily refer to the same embodiment or example. In addition, the particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or subcombination. Furthermore, it will be understood by those of ordinary skill in the art that the figures provided herein are for illustrative purposes only and are not necessarily drawn to scale. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0030] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.
[0031] Example 1:
[0032] Since bentonite particles are fine and the soil is sticky, its flowability is not strong, and it will clump and be briefly interrupted when feeding. As a result, the bentonite will clump or be distributed intermittently when it falls onto the belt surface of the belt conveyor, affecting the uniformity of the mixture at the feeding end. At the same time, the measurement of the bentonite cannot be guaranteed to be within the error range.
[0033] In order to increase the uniformity of the initial mixture on the feeding belt conveyor and ensure the metering accuracy of the bentonite, in this embodiment, Figure 2As shown in FIG, a granular feeding system for a stabilized soil mixing plant is designed, comprising a feeding silo 1 and a conveyor belt 2. The feeding silo 1 is located above the conveyor belt 2 and has a silo inlet at the top and a silo outlet at the bottom. A pressure plate 3 is provided within the feeding silo 1. The middle portion of the pressure plate 3 protrudes toward the silo inlet, and the ends of the pressure plate 3 extend toward the silo outlet. This allows the pressure plate 3 to be high in the middle and low at the edges, with a gap between the edge of the pressure plate 3 and the inner sidewall of the feeding silo 1. During loading, bentonite enters the silo and then falls onto the pressure plate 3. Due to the structure of the pressure plate 3, which is high in the middle and low at the edges, the bentonite falls from the gap between the edge of the pressure plate 3 and the sidewall of the feeding silo 1 onto the conveyor belt 2. During the falling process, the bentonite first collides with the pressure plate 3, preventing it from clumping and breaking, and without affecting the accuracy of the metering.
[0034] Furthermore, the pressure plate 3 is composed of two straight plates 301, which can be made of steel. One end of the two straight plates 301 is fixedly connected, such as by welding the two straight plates 301 together. The two straight plates 301 form a tapered angle at their connection, forming a tapered shape overall. A gap exists between the edges of the two straight plates 301 and the sidewalls of the feed silo 1. Preferably, the angle between the two straight plates 301 is 137.14°. This angle has the advantage of creating a slope steeper than the static repose angle of the bentonite, thereby more effectively preventing the accumulation of bentonite on the pressure plate 3. Both ends of the two straight plates 301 are fixedly connected to the inner sidewalls of the feed silo 1, thereby securing the tapered pressure plate 3 within the feed silo 1. Preferably, the silo inlet has a larger diameter than the feed outlet, and the distance between the outermost edges of the two straight plates 301 is greater than the silo outlet diameter. This design allows the bentonite to collide with the silo wall in addition to the pressure plate 3 during its falling process. The dual action can ensure the uniform falling of the bentonite and further improve the metering accuracy.
[0035] Example 2:
[0036] Since bentonite particles are relatively fine, they are easily affected by natural wind in an open-air environment, causing the material to escape from the gap between the bottom of the silo and the belt surface of the belt conveyor, which not only wastes the material but also causes environmental pollution.
[0037] In order to avoid the above situation, this embodiment is based on Example 1 and is provided with a baffle 4 at the outlet of the silo. The baffle 4 is an enclosure plate, which is a steel plate and is welded to the lower edge of the outlet of the feeding silo 1. This can reduce the gap between the baffle 4 of the feeding silo 1 and the conveyor belt, so that the distance between the lower edge of the baffle 4 and the belt conveyor 2 below is less than 10 mm. This can prevent the bentonite from escaping from the pores. Furthermore, a feeding silo 1 filled with bentonite is provided at the end of the belt conveyor 2, and a silo filled with coarse material is provided at the front end of the belt conveyor 2. That is, the bentonite material is first discharged from the discharge port of the silo, and the coarse material is discharged after the bentonite material is spread on the belt surface of the feeding belt conveyor (i.e., the belt conveyor 2). The coarse material forms a covering pressure protection on the bentonite material, reducing the overflow of fine-grained soil during the feeding process and further improving the metering accuracy.
[0038] While the rated capacity of existing silo openings is approximately 200 tons or more, the relatively low total weight of bentonite results in an actual operating frequency of approximately 10 Hz. This results in insufficient drive motor output, which in turn affects the quality of the stabilized soil. To address this issue, in this embodiment, the width of baffle 4 is set to 100 mm. This configuration allows the rated capacity to be controlled at approximately 100 tons, enabling more accurate metering when the proportion of a particular admixture is relatively small.
[0039] Preferably, in this embodiment, an adjustment plate 5 is provided at the outlet of the silo. The adjustment plate 5 is located in the enclosed space of the baffle 4. The adjustment plate 5 is made of steel and can be welded to the feeding silo 1. At the same time, the side wall of the adjustment plate 5 is fixedly connected to the inner side wall of the baffle 4 (such as Figure 4 As shown in ), there are two outlets on the feeding silo 1 (A and B, see Figure 3 As shown in FIG), the two outlets are separated by an adjusting plate 5. The adjusting plate 5 is arranged at the outlet of the silo closer to the mixing direction of the multiple feeds (as shown in FIG). Figure 3 ), with the blending direction being the same as the direction of travel of belt conveyor 2. With the adjustment plate 5 positioned close to the blending direction, the pellets exiting port A are more concentrated when they land on the belt conveyor during their fall, further improving the metering accuracy of the belt scale. The pellets exiting port B are also more concentrated, further improving metering accuracy.
[0040] The utility model has the following advantages:
[0041] 1. The utility model adds a pressure plate 3 above the belt conveyor 2 below the silo, and the pressure plate 3 is in the shape of a pyramid. The width of the pyramid is greater than the width of the discharge port of the silo, so that the bentonite can fall along the gap between the silo and the pressure plate 3 to the belt conveyor 2, so that the material will not clumping or short-term interruption during unloading.
[0042] 2. The utility model welds a baffle 4 at the lower edge of the silo to reduce the gap between the silo steel plate and the conveyor belt. The gap is controlled within 10 mm. When loading bentonite, the bentonite will not overflow from between the silo baffle 4 and the belt.
[0043] 3. The utility model welds a baffle 4 at the discharge port and controls the width of the baffle 4 to 100 mm. The rated production capacity can be controlled at about 100 tons. When the proportion of a certain admixture is relatively small, more accurate measurement can be achieved.
[0044] 4. After the equipment was modified, the uniformity of the material was greatly improved, and bentonite overflow no longer occurred. The finished material was weighed and calibrated. The weighed material weight was 4.86 tons, and the computer displayed 4.77 tons. The computer display differed from the actual weight by 0.08 tons, an error of 1.6%.
[0045] 5. The utility model divides the outlet into two by arranging an adjustment plate at the outlet of the silo. This design is conducive to improving the metering accuracy of the particles on the belt conveyor.
[0046] 6. The utility model ensures measurement accuracy, improves construction quality, increases the diversity of mixing, and improves market competitiveness.
[0047] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above are only specific implementation methods of the utility model and are not used to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.
Claims
1. A granular material feeding system for a stabilized soil mixing equipment, characterized in that: The invention comprises a feeding silo (1) and a belt conveyor (2), wherein the feeding silo (1) is arranged above the belt conveyor (2), the feeding silo (1) has a silo inlet and a silo outlet, a pressure plate (3) is provided inside the feeding silo (1), the middle part of the pressure plate (3) protrudes toward the silo inlet, the end part of the pressure plate (3) extends toward the silo outlet, and a gap is formed between the edge of the pressure plate (3) and the inner wall of the feeding silo (1).
2. A granular material feeding system for a stabilized soil mixing device according to claim 1, characterized in that: The pressure plate (3) is composed of two straight plates (301), one end of the two straight plates (301) is fixedly connected, the two straight plates (301) form a conical angle at the connection, and there is a gap between the edges of the two straight plates (301) and the side wall of the feeding silo (1).
3. The granular material feeding system for stabilized soil mixing equipment according to claim 2, characterized in that: The included angle between the two straight plates (301) is 137.14°, and both ends of the two straight plates (301) are fixedly connected to the inner side wall of the feeding bin (1).
4. A granular material feeding system for a stabilized soil mixing device according to claim 2 or 3, characterized in that: The caliber of the silo inlet is larger than the caliber of the feeding outlet, and the distance between the outermost ends of the two straight plates (301) is larger than the caliber of the silo outlet.
5. The granular material feeding system for stabilized soil mixing equipment according to claim 4, characterized in that: A baffle (4) is provided at the outlet of the silo, and the baffle (4) is an enclosing plate.
6. A granular material feeding system for a stabilized soil mixing device according to claim 5, characterized in that: The distance between the lower edge of the baffle (4) and the belt conveyor (2) below is less than 10 mm.
7. A granular material feeding system for a stabilized soil mixing device according to claim 5 or 6, characterized in that: A feed silo (1) filled with bentonite is arranged at the end of a belt conveyor (2), and a silo filled with coarse material is arranged at the front end of the belt conveyor (2).
8. The granular material feeding system for stabilized soil mixing equipment according to claim 7, characterized in that: The width of the baffle (4) is 100 mm.
9. The granular material feeding system for stabilized soil mixing equipment according to claim 8, characterized in that: An adjustment plate (5) is also provided at the silo outlet. The adjustment plate (5) is located in the enclosed space of the baffle (4), and the side wall of the adjustment plate (5) is fixedly connected to the inner side wall of the baffle (4).
10. A granular material feeding system for a stabilized soil mixing device according to claim 9, characterized in that: The regulating plate (5) is arranged at a side of the silo outlet close to the direction of material particle blending.