Ground shifting roller stock bin unloader

Abstract

The invention discloses a ground shifting roller stock bin unloader which comprises a stock bin, a shifting roller, a gear motor and a workbench. The stock bin is fixed to the middle of the workbench, and a discharging port of the stock bin penetrates through the workbench downwards to be in butt joint with lower-level equipment. The two stirring rollers are arranged in parallel above a discharge port of the stock bin in a high-low staggered manner; the two speed reducing motors are fixed on the working table, are respectively connected with one ends of the two stirring rollers, and respectively drive the two stirring rollers to rotate; the shifting roller comprises a roller shaft and a plurality of shifting teeth, and the shifting teeth are arranged on the roller shaft in a staggered mode. According to the scheme, by improving the arrangement form of the shifting roller and the shifting teeth and adjusting the angles of the two sides of the bin plate, the problems of material blocking, bridging and the like existing when a conventional shifting roller bin unloader treats strip-shaped materials are solved from multiple aspects, and stable and uniform conveying of the materials is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power plant feeding equipment, in particular to a ground roller bin unloader. Background Art

[0002] In the feeding systems of biomass power plants, solid waste power plants and coal-fired power plants, the roller silo unloader is an important equipment in the material transportation link, and its performance directly affects the operating efficiency and stability of the entire power plant feeding system.

[0003] Conventional roller silo unloaders are mainly composed of a silo, a roller, and a transmission device. Its working principle is: the material is stored in the silo, the transmission device drives the roller to rotate, and the teeth on the roller push the material to discharge it from the silo outlet, thereby realizing the unloading process.

[0004] However, in practical applications, the conventional roller bin unloader has the following obvious defects:

[0005] 1. Poor strip material handling capacity

[0006] In biomass power plants, strip materials such as platycodon are often processed. These strip materials are prone to the following problems in conventional roller silo unloaders:

[0007] Frequent blocking: Due to the shape characteristics of the strip materials themselves, they are very easy to get entangled and tangled in the process of falling. For example, when the roller rotates to push the material, the strip materials may be entangled on the teeth, or intertwined with each other, forming a large material mass, which in turn hinders the normal fall of subsequent materials, resulting in material accumulation at the silo outlet and poor unloading. This blocking phenomenon not only affects the continuity of unloading, but may also cause the operation of the entire feeding system to be interrupted, requiring frequent manual cleaning, increasing maintenance costs and workload.

[0008] The problem of material bridging and suspension is prominent: Strip materials are also prone to bridging and suspension in the silo. When materials are piled up in the silo, they may form an arched structure at certain locations, similar to a bridge. The materials cannot fall smoothly to the area that the rollers can reach by their own gravity. This makes it impossible for the rollers to effectively push the materials, making it difficult to retrieve the materials, seriously affecting the production efficiency of the feeding system, and may affect the normal power generation operation of the power plant.

[0009] 2. Unreasonable structural design exacerbates unloading problems

[0010] Single arrangement of rollers and teeth: The arrangement of rollers and teeth of conventional roller silo dischargers is not flexible enough, usually evenly distributed or simply arranged in a regular pattern. This arrangement cannot effectively disperse and guide materials with complex shapes, especially strip-shaped materials. For example, when the teeth push the materials, the distribution pattern of the teeth may cause the materials to accumulate in certain areas, while other areas are sparse, further exacerbating the problems of blockage and uneven material distribution, affecting the stability and uniformity of unloading.

[0011] In addition, the silo boards of conventional silos are all designed symmetrically. This design cannot provide good material flow guidance when handling materials with different characteristics. Materials on both sides slide down at the same time and easily collide with each other at the discharge port. Especially for strip materials, a single silo board angle cannot effectively cause the materials to slide down to the roller area, which easily leads to the retention of materials on the silo board, increasing the possibility of material bridging and hanging in the air. It is also not conducive to the uniform transportation of materials, making it easy for materials to be intermittent during the unloading process, and cannot meet the requirements of the power plant feeding system for efficient and stable material transportation.

[0012] In summary, due to the limitations of its working principle and structural design, the existing roller silo unloader is difficult to achieve stable and uniform material transportation in the feeding system of biomass power plants, solid waste power plants and coal-fired power plants, especially when dealing with strip materials, which seriously affects the normal operation and production efficiency of the power plant feeding system. Therefore, a new technical solution is urgently needed to solve these problems in order to improve the performance and applicability of the roller silo unloader. Summary of the invention

[0013] The technical problem to be solved by the present invention is to solve the problems of material clogging and material bridging and suspension in the air when a conventional roller silo unloader is used to process strip materials such as platycodon in a biomass, solid waste and coal-fired power plant co-firing feeding system. By improving the arrangement of the rollers and the teeth and adjusting the angles on both sides of the silo plate, stable and uniform material transportation can be achieved to meet the requirements of the power plant feeding system for efficient and stable material transportation.

[0014] The technical solution adopted by the present invention to solve its technical problem is:

[0015] A ground roller silo unloader comprises: a silo, a roller, a reduction motor and a workbench; the silo is fixed in the middle of the workbench, and its discharge port passes downward through the workbench to connect with the lower-level equipment; two rollers are provided, and the two rollers are installed in parallel above the discharge port of the silo with a height offset; two reduction motors are provided, both fixed on the workbench, and respectively connected to one end of the two rollers to drive the two rollers to rotate; the roller comprises a roller shaft and a plurality of teeth, and the teeth are staggered on the roller shaft.

[0016] According to a further preferred technical solution, the top surface of the silo is a rectangular feed port, the bottom surface is a rectangular discharge port, the left and right panels are symmetrical to each other, and the front and rear panels have different angles with the horizontal plane.

[0017] According to a further preferred technical solution, the angle between the front panel of the silo and the horizontal plane is 60°, and the angle between the rear panel of the silo and the horizontal plane is 70°.

[0018] According to a further preferred technical solution, the reduction motors are respectively arranged on both sides of the silo and are respectively connected to the shifting rollers through couplings.

[0019] A further preferred technical solution is that ladders are provided on both sides of the workbench to facilitate maintenance by staff.

[0020] According to a further preferred technical solution, the height of the axis center of the lower-positioned roller is consistent with the height of the bottom end of the roller shaft of the higher-positioned roller.

[0021] According to a further preferred technical solution, both ends of the roller are fixed to the workbench via bearing seats.

[0022] The beneficial effects of the present invention are:

[0023] 1. Improved arrangement of roller and gear plate

[0024] Reduce material jamming and bridging: In this solution, the height difference of the rollers is staggered. This unique design prevents the materials from getting stuck easily due to being on the same plane during transportation. For example, when strip materials such as platycodon enter the silo, due to the height difference of the rollers, the materials will be gradually pushed by the rollers at different heights, avoiding the situation where the materials are piled up and jammed at the same horizontal position, thereby effectively reducing the occurrence of bridging. The materials can pass through the roller area more smoothly, ensuring the continuity of unloading and improving the stability of the feeding system.

[0025] Enhanced material dispersion: The rollers and teeth are staggered and irregularly distributed. This arrangement breaks the limitations of the traditional regular arrangement. When the rollers rotate, the irregularly distributed teeth can push and stir the materials from different angles and positions. For strip materials of various shapes, the staggered and irregular teeth can better break up the materials so that they will not be concentrated in a certain area, but evenly distributed around the rollers, and then be transported out stably. This advantage effectively solves the problem of uneven material distribution and easy blockage caused by the regular arrangement of teeth in conventional dischargers, and improves the uniformity and efficiency of material transportation.

[0026] 2. Angle adjustment on both sides of the warehouse board

[0027] Optimize material fluidity: The design of different angles on both sides of the silo can better guide the material to slide to the roller area according to the characteristics and flow rules of the material. Silos with different angles can adapt to the accumulation of materials at different positions in the silo. For example, when strip materials are accumulated in the silo, the silo with different angles on both sides can make the materials slide in a direction that is more conducive to flow under the action of gravity, avoiding the retention of materials on the silo, reducing the possibility of materials bridging and hanging in the air, and improving the fluidity of materials and the smoothness of unloading.

[0028] Adapt to various material characteristics: This adjustable silo angle design enables the unloader to adapt to the characteristics of various different materials in the feeding system of biomass power plants, solid waste power plants and coal-fired power plants. The shape, size, humidity and other factors of different materials will affect their fluidity in the silo, and different silo angles can be optimized according to the actual material conditions to ensure that all kinds of materials can slide smoothly into the roller area in the silo, achieving stable and uniform transportation, and enhancing the versatility and adaptability of the unloader.

[0029] In summary, this patent solves the problems of blockage and bridging in conventional roller silo unloaders when processing strip materials from multiple aspects by improving the arrangement of the rollers and teeth and adjusting the angles on both sides of the silo plate, thereby achieving stable and uniform transportation of materials, and has significant technical advantages and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the main view of the overall structure of the present invention.

[0031] Figure 2 It is a side view schematic diagram of the overall structure of the present invention.

[0032] Figure 3 It is a schematic diagram of the structure of the pull roller of the present invention.

[0033] In the figure: 1-bin, 2-roller, 3-reduction motor, 4-workbench, 5-bearing seat, 6-coupling, 7-ladder, 11-front panel, 12-rear panel, 21-first roller, 22-second roller, 211-roller shaft 211, 222-tooth. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1As shown, the present embodiment discloses a ground roller silo unloader, and its specific implementation structure includes: silo 1, roller 2, reduction motor 3 and workbench 4. Among them, the workbench 4 serves as the supporting foundation of the entire equipment, and the silo 1 and reduction motor 3 are fixedly installed on the workbench 4. The silo 1 is fixed in the middle of the workbench 4, and its discharge port passes downward through the workbench 4 to connect with the lower-level equipment.

[0036] About the design of the workbench:

[0037] like Figure 1 As shown, the workbench 4 can be a ladder frame platform welded by H-shaped steel. Ladders 7 are symmetrically installed on both sides of the workbench 4 for the convenience of maintenance by the staff. A crossbeam reinforcement rib is arranged inside the workbench 4 to improve the load-bearing capacity.

[0038] Design of silo:

[0039] like Figure 2 As shown, the top surface of the silo 1 is a rectangular feed port, the bottom surface is a rectangular discharge port, the left and right panels are symmetrical, and the front panel 11 and the rear panel 12 have different angles with the horizontal plane. In the specific design, the angle between the front panel 11 of the silo 1 and the horizontal plane is 60°, and the angle between the rear panel 12 of the silo 1 and the horizontal plane is 70°.

[0040] Design of offset roller:

[0041] like Figure 2 As shown, two rollers 2 are provided in the silo 1, which can be specifically divided into: a first roller 21 and a second roller 22; the first roller 21 and the second roller 22 are installed in parallel above the discharge port of the silo 1 with a high and low offset. Among them, the first roller 21 is a high-position roller, and the second roller 22 is a low-position roller, and the axis height of the low-position roller is consistent with the bottom end height of the roller shaft of the high-position roller.

[0042] Both ends of the two rollers 2 are fixed on the workbench 4 through the bearing seat 5.

[0043] like Figure 3 As shown, the shifting roller 2 comprises a roller shaft 211 and a plurality of shifting teeth 222. The shifting teeth 222 are staggeredly arranged on the roller shaft 211.

[0044] Design of drive structure:

[0045] like Figure 1 and 2 As shown, note Figure 1 In order to clearly show the connection structure between the roller 2 and the reduction motor 3, the high-position roller, i.e., the first roller 21, is omitted, and only the connection structure of the second roller 22 and the reduction motor 3 corresponding to the first roller 21 are shown. However, since the connection method of the first roller 21 and the second roller 22 is the same, it does not affect the expression of the connection principle.

[0046] Two reduction motors 3 are provided, and the two reduction motors 3 are respectively connected to the first roller 21 and the second roller 22 by means of a coupling 6, and then respectively drive the two rollers to rotate towards each other.

[0047] Working principle:

[0048] After the material enters the silo from the top feed port, it is guided by the asymmetric silo plate. The different angles on both sides of the silo plate can better guide the material to slide to the roller area according to the characteristics and flow rules of the material, so that the feed flow rate on the front and back sides is different. Then, under the shearing action of the two stepped offset rollers, the entangled strip objects are cut off. Due to the height difference of the rollers, the material will be gradually pushed by the rollers at different heights, avoiding the situation where the material is piled up and stuck at the same horizontal position, thereby effectively reducing the occurrence of bridging.

[0049] In addition, the rollers and teeth are staggered and irregularly distributed, which breaks the limitations of the traditional regular arrangement. When the rollers rotate, the irregularly distributed teeth can push and stir the materials from different angles and positions. For strip materials of various shapes, the staggered and irregular teeth can better break up the materials so that they will not be concentrated in a certain area, but evenly distributed around the rollers, and then be stably transported out.

[0050] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Ground roller silo unloader, characterized in that: include: A silo, a shifting roller, a reduction motor and a workbench; the silo is fixed in the middle of the workbench, and its discharge port passes downward through the workbench to connect with the lower-level equipment; two shifting rollers are provided, and the two are installed in parallel above the discharge port of the silo with a height offset; two reduction motors are provided, both fixed on the workbench, and respectively connected to one end of the two shifting rollers to drive the two shifting rollers to rotate; the shifting roller includes a roller shaft and a plurality of shifting teeth, and the shifting teeth are staggered on the roller shaft.

2. The ground roller silo unloader according to claim 1, characterized in that: The top surface of the silo is a rectangular feed inlet, the bottom surface is a rectangular discharge outlet, the left and right panels are symmetrical to each other, and the front and rear panels have different angles with the horizontal plane.

3. The ground roller silo unloader according to claim 2, characterized in that: The angle between the front panel of the silo and the horizontal plane is 60°, and the angle between the rear panel of the silo and the horizontal plane is 70°.

4. The ground roller silo unloader according to claim 1, characterized in that: The two reduction motors are respectively arranged on both sides of the silo and are connected to the two shifting rollers through couplings.

5. The ground roller silo unloader according to claim 1, characterized in that: Ladders are respectively arranged on both sides of the workbench.

6. The ground roller silo unloader according to claim 1, characterized in that: The height of the axis center of the lower-positioned roller is consistent with the height of the bottom end of the roller shaft of the higher-positioned roller.

7. The ground roller silo unloader according to claim 1, characterized in that: The two ends of the roller are fixed on the workbench through bearing seats.

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