Shaft variable-diameter variable-pitch spiral feeding device of stokehole feeding system

Abstract

The utility model discloses a shaft variable-diameter variable-pitch spiral feeding device of a stokehole feeding system, relates to the technical field of spiral feeders, and aims to solve the problems that according to the structural design of an existing auger, maintenance is difficult, and the auger cannot be rapidly taken out of a material conveying bin. The helical blade is detachably connected with a plurality of groups of scrapers, and the scrapers are arranged around the helical blade; through the split type design of the rotating shafts, the limiting grooves and the limiting heads are arranged on the end faces of the adjacent rotating shafts correspondingly, the adjustable positioning assemblies are arranged in the limiting grooves, the limiting assemblies are matched with the limiting heads inserted into the limiting grooves, and the limiting pieces are matched with the limiting space for transverse positioning; the positioning piece is matched with the first ratchet wheel and the second ratchet wheel to achieve limiting of axial rotation. By means of the structural design, connection of the rotating shafts is facilitated, and meanwhile during maintenance, the conveying auger can be separated, segmented and taken out from the interior of the conveying bin to be maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of screw feeders, in particular to a shaft-variable diameter and pitch screw feeder for a furnace front feeding system. Background Art

[0002] The shaft-variable diameter and pitch screw feeder is a specially designed screw feeder. Its main feature is that the diameter and pitch of the screw shaft can be changed. This design allows the device to adjust the conveying capacity according to the needs of the material, thereby optimizing the material flow and reducing blockage.

[0003] The existing conveying auger is usually a whole shaft, which is difficult to maintain and update. When the conveying auger needs to be removed, it needs to be assisted by tools such as a crane, which is time-consuming. In addition, the material often sticks to the wall in the existing feed silo, affecting the conveying problem.

[0004] Therefore, the present application provides a shaft-variable diameter and pitch spiral feeding device for a furnace front feeding system to meet the needs. Utility Model Content

[0005] The purpose of this application is to provide a shaft-variable diameter and pitch spiral feeding device for a furnace front feeding system, aiming to solve the problem that the structural design of the existing auger is difficult to maintain and the auger cannot be quickly removed from the feed bin.

[0006] To achieve the above objectives, the present application provides the following technical solutions: a shaft-variable diameter and pitch spiral feeding device for a furnace front feeding system, comprising a feeding bin, a rotating shaft rotatably connected within the feeding bin, a spiral blade provided on the rotating shaft, a conveying motor for driving the rotating shaft provided on the outer wall of the feeding bin, a scraper detachably connected to the spiral blade, and multiple groups of scrapers provided around the spiral blade;

[0007] There are multiple groups of rotating shafts, and two adjacent groups of rotating shafts are connected by a connecting mechanism;

[0008] The connecting mechanism includes a limit head and a positioning assembly. The limit head is arranged on the end face of one group of rotating shafts, and the opposite surface of the other group of rotating shafts is provided with a limit groove adapted to the limit head. A through hole is provided on the inner wall of the limit groove, and the positioning assembly is threadedly connected to the through hole; the positioning assembly is adapted to the limit head.

[0009] Preferably, a mounting groove is provided on the outer wall of the spiral blade, a fixing seat matching the mounting groove is provided on the spiral blade, a scraper is slidably connected in the mounting groove, and the scraper and the fixing seat are connected by bolts.

[0010] Preferably, the limiting head includes a first ratchet and a second ratchet, the first ratchet and the second ratchet are coaxially arranged, and a limiting space is provided between the first ratchet and the second ratchet;

[0011] The teeth of the ratchet No. 1 and the ratchet No. 2 are oriented in opposite directions; through the reverse design, the two sets of positioning members cooperate to achieve locking and fixation between the two sets of connected rotating shafts.

[0012] Preferably, the positioning assembly includes an adjustment bolt and a connecting plate, a positioning member, and a limiting member. The adjustment bolt is threadedly connected to the through-hole; the positioning member is rotatably connected to the end face of the adjustment bolt, and two sets of positioning members are symmetrically arranged on the top surface of the positioning member, and the positioning members are staggered. The two sets of positioning members are respectively engaged with the first ratchet and the second ratchet. A limiting member is provided in the middle of the connecting plate, and the limiting member is adapted to the limiting space. The cooperation between the limiting head and the positioning assembly facilitates assembly and disassembly, and only requires rotating the adjustment bolt in the through-hole to achieve quick assembly and disassembly.

[0013] Preferably, the connecting plate is an arched structure.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] The utility model adopts a split-type design of the rotating shaft, and a limit groove and a limit head are respectively provided on the end faces of adjacent rotating shafts. An adjustable positioning component is provided in the limit groove, and the limit component cooperates with the limit head inserted into the limit groove, and the limit piece cooperates with the limit space to perform lateral positioning; the positioning piece cooperates with the No. 1 ratchet and the No. 2 ratchet to realize the limitation of axial rotation; thus, through the above-mentioned structural design, the rotating shaft can be connected, and at the same time, the conveying auger can be separated and divided into sections during maintenance, and taken out from the inside of the feed bin for maintenance.

[0016] The utility model uses a scraper detachably mounted on the spiral blade to remove the sticking material inside the feeding bin, and when the line material is conveyed, if the shaft is entangled, the scraper can be removed to perform maintenance on the conveying auger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the shaft structure of the utility model Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the shaft structure of the utility model Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the limit head structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the partial cross-sectional structure of the rotating shaft of the utility model. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the partial cross-sectional structure of the rotating shaft of the utility model. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the end face structure of the rotating shaft of the present utility model;

[0025] Figure 8 This is a schematic diagram of the positioning component structure of the present utility model.

[0026] In the figure: 1. Feed hopper; 2. Conveying motor; 3. Rotating shaft; 31. Limiting groove; 32. Perforation; 4. Spiral blade; 41. Mounting groove; 5. Fixed seat; 6. Scraper; 7. Limiting head; 71. Ratchet No. 1; 72. Ratchet No. 2; 73. Limiting space; 8. Positioning assembly; 81. Adjusting bolt; 82. Connecting plate; 83. Positioning piece; 84. Limiting piece. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] Example: Reference Figure 1-8 The illustrated embodiment of a furnace feeding system comprises a shaft-variable diameter and pitch-variable spiral feeding device, comprising a feeding bin 1, wherein a rotating shaft 3 is rotatably connected inside the feeding bin 1, wherein the rotating shaft 3 is provided with three groups, and a limit head 7 and a limit groove 31 are provided at both ends of the middle rotating shaft 3, respectively, and a limit groove 31 and a limit head 7 are provided on the opposite surfaces of the other two groups of rotating shafts 3, respectively; after the limit head 7 is inserted into the limit groove 31, the limit head 7 is docked by using the positioning assembly 8 inside the limit groove 31, thereby fixing the docking state of the two groups of rotating shafts 3 so that the two groups can rotate synchronously; a spiral blade 4 is provided on the outer wall of the rotating shaft 3, and under the drive of the conveying motor 2, the rotating shaft 3 drives the spiral blade 4 to transport the material entering the feeding bin 1;

[0029] In order to improve the conveying efficiency and remove the material stuck on the inner wall of the feeding bin 1, four groups of scrapers 6 are arranged in a ring on the spiral blade 4, and the scrapers 6 are connected to the spiral blade 4 by bolts. The purpose is to facilitate the separate maintenance of the spiral blade 4 and the scrapers 6. When the line material is conveyed and there is a tangling problem, the scrapers 6 can be removed separately to reduce the difficulty of cleaning; a mounting groove 41 for positioning the scraper 6 is provided on the spiral blade 4, and two groups of symmetrical fixing seats 5 are provided on the spiral blade 4 (next to the mounting groove 41). After the scraper 6 is inserted into the mounting groove 41, the scraper 6 and the fixing seat 5 are connected by bolts to achieve position fixation.

[0030] Limiting head 7: The No. 1 ratchet 71 and the No. 2 ratchet 72 are coaxially arranged on the end face of the rotating shaft 3, and a limiting space 73 is left between the No. 1 ratchet 71 and the No. 2 ratchet 72. The teeth of the No. 1 ratchet 71 and the No. 2 ratchet 72 are facing opposite directions. The purpose is to cooperate with the positioning component 8 to perform bidirectional positioning so that the two sets of docking rotating shafts 3 can rotate synchronously regardless of whether the conveying motor 2 rotates forward or reverse.

[0031] Positioning assembly 8: A through hole 32 is provided on the inner wall of the limiting groove 31, and an adjusting bolt 81 is threadedly connected to the through hole 32, and a connecting plate 82 is rotatably connected to the inner end face of the adjusting bolt 81. The connecting plate 82 is a bow-shaped structure, and its function is to expand the movement space in the limiting groove 31; two groups of staggered and symmetrical positioning members 83 are provided on the connecting plate 82, and the two groups of positioning members 83 are respectively adapted to the No. 1 ratchet 71 and the No. 2 ratchet 72. When the adjusting bolt 81 rotates and drives the connecting plate 82 to move upward, the positioning member 83 engages with the No. 1 ratchet 71 and the No. 2 ratchet 72, thereby achieving the purpose of two-way locking; and a limiting member 84 is provided in the middle of the connecting plate 82, and the limiting member 84 is inserted into the limiting space 73 to achieve lateral positioning to avoid separation between the two groups of connected rotating shafts 3.

[0032] The working principle of the utility model is as follows: the conveying motor 2 is used to control the rotating shaft 3 to rotate inside the feeding bin 1, and the rotating rotating shaft 3 conveys the material stably and continuously through the spiral blade 4; the scraper 6 provided on the spiral blade 4 removes the material attached to the inner wall of the feeding bin 1; when the conveying auger needs to be maintained, the bin cover on the top of the feeding bin 1 is opened; then the bolts on the fixing seat 5 are unscrewed with a tool, the fixed limit of the scraper 6 is cancelled, the scraper 6 is taken out from between the mounting groove 41 and the fixing seat 5, and the scraper 6 is inspected; the screw is rotated to the position where the material is to be transported. The adjusting bolt 81 in the hole 32 causes the adjusting bolt 81 to move outward, thereby driving the connecting plate 82 provided on its inner end surface to move toward the inner wall of the limiting groove 31. The two groups of positioning members 83 and the one group of limiting members 84 provided on the connecting plate 82 are separated from the No. 1 ratchet 71, the No. 2 ratchet 72 and the limiting space 73 respectively, releasing the limiting connection between the limiting head 7 and the positioning assembly 8, thereby releasing the fixed connection relationship between the two groups of rotating shafts 3. The rotating shafts 3 are then taken out one by one from the feeding bin 1 for inspection and maintenance. After passing the inspection, the above operation can be performed in reverse.

[0033] The electromechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0034] Components not described in detail herein are prior art.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shaft-type variable diameter and variable pitch spiral feeding device for a furnace front feeding system, comprising a feeding bin (1), a rotating shaft (3) rotatably connected in the feeding bin (1), a spiral blade (4) provided on the rotating shaft (3), and a conveying motor (2) for driving the rotating shaft (3) provided on the outer wall of the feeding bin (1), characterized in that: The spiral blade (4) is detachably connected to a scraper (6), and a plurality of scrapers (6) are arranged around the spiral blade (4); The rotating shafts (3) are provided in multiple groups, and two adjacent groups of rotating shafts (3) are connected via a connecting mechanism; The connecting mechanism comprises a limiting head (7) and a positioning assembly (8), wherein the limiting head (7) is provided on the end face of one group of rotating shafts (3), and the opposite face of the other group of rotating shafts (3) is provided with a limiting groove (31) adapted to the limiting head (7), a through hole (32) is provided on the inner wall of the limiting groove (31), and the positioning assembly (8) is connected to the inner thread of the through hole (32); the positioning assembly (8) is adapted to the limiting head (7).

2. The shaft-variable diameter and pitch-variable screw feeding device of the furnace front feeding system according to claim 1 is characterized in that: A mounting groove (41) is provided on the outer wall of the spiral blade (4), a fixing seat (5) matched with the mounting groove (41) is provided on the spiral blade (4), a scraper (6) is slidably connected in the mounting groove (41), and the scraper (6) and the fixing seat (5) are connected by bolts.

3. The shaft-variable diameter and pitch-variable screw feeding device of the furnace front feeding system according to claim 1 is characterized in that: The limiting head (7) comprises a first ratchet (71) and a second ratchet (72), wherein the first ratchet (71) and the second ratchet (72) are coaxially arranged, and a limiting space (73) is provided between the first ratchet (71) and the second ratchet (72); The teeth of the first ratchet (71) and the second ratchet (72) are oriented in opposite directions.

4. The shaft-variable diameter and pitch-variable screw feeder of the furnace front feeding system according to claim 3, characterized in that: The positioning assembly (8) comprises an adjusting bolt (81), a connecting plate (82), a positioning member (83), and a limiting member (84). The adjusting bolt (81) is threadedly connected in the through hole (32). A positioning member (83) is rotatably connected to the end surface of the adjusting bolt (81). Two groups of positioning members (83) are symmetrically arranged on the top surface of the positioning member (83). The positioning members (83) are staggered. The two groups of positioning members (83) are respectively engaged with the first ratchet (71) and the second ratchet (72). A limiting member (84) is provided in the middle of the connecting plate (82). The limiting member (84) is adapted to the limiting space (73).

5. The shaft-variable diameter and pitch-variable screw feeding device of the furnace front feeding system according to claim 4, characterized in that: The connecting plate (82) is an arched structure.

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