Spiral coal feeder capable of preventing shaft from being bent

Abstract

The utility model discloses a spiral coal feeder capable of preventing a shaft from being bent. The spiral coal feeder comprises a machine shell, a spiral shaft rotationally installed on the inner side of the machine shell and a gear motor installed on the right side surface of the machine shell, wherein the output end of the gear motor is connected with the right end of the spiral shaft. The spiral shaft is composed of two end shafts, a middle shaft installed between the two end shafts and two hanging tile supporting devices arranged at the connecting positions of the middle shaft and the end shafts. Flange shafts are fixed to the two ends of the end shafts and the two ends of the middle shaft. The hanging bush supporting device comprises a bearing bush; the two hanging tile supporting devices are additionally arranged in the middle of the spiral shaft of the spiral coal feeder, so that the middle of the spiral shaft can be effectively supported, sufficient strength of the spiral shaft during full-load operation is guaranteed, the spiral shaft is prevented from being bent during full-load operation, stable operation of the spiral coal feeder is guaranteed, and the service life of the spiral coal feeder is prolonged. And meanwhile, through the designed dismounting structure, the hanging tile supporting device is easy to dismount and mount, and subsequent dismounting, mounting and maintaining are facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of screw feeders, specifically relating to a screw feeder that prevents shaft bending. Background Technology

[0002] A screw feeder, also known as a auger feeder, is a widely used coal conveying device. Its core working principle is to use spiral blades to feed coal into the coal pipeline. This equipment mainly consists of a screw conveyor, a screw shaft, spiral blades, a feed inlet, and a discharge outlet. It has a relatively simple structure, stable operation, low noise, and low failure rate. It is especially suitable for conveying coal materials in narrow spaces or where it is required to convey irregularly shaped coal materials. During use, fuel falls into the screw feeder from the coal chute, and the rotation of the screw rod feeds the fuel into the furnace. This conveying method gives the screw feeder continuous, uniform, and stable characteristics during coal conveying.

[0003] In practical use, existing screw feeders are generally too long, and their internal screw shafts are hollow. The excessive span at both ends makes the middle area of ​​the hollow shaft prone to bending due to increased load. This causes the screw blades in the middle shaft area to rub against the feeder casing, gradually increasing the motor current and eventually causing the feeder to overload and stop, affecting its normal operation. Therefore, this utility model proposes a screw feeder that prevents shaft bending. Utility Model Content

[0004] The purpose of this invention is to provide a screw feeder that prevents shaft bending, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screw feeder for preventing shaft bending, comprising...

[0006] The machine housing, the rotatable screw shaft mounted inside the machine housing, and the geared motor mounted on the right side surface of the machine housing with its output end connected to the right end of the screw shaft;

[0007] The spiral shaft consists of two end shafts, an intermediate shaft installed between the two end shafts, and two hanging bearing support devices set at the connection between the intermediate shaft and the end shafts. Both ends of the end shafts and the intermediate shaft are fixed with flange shafts.

[0008] The hanging bearing support device includes a bearing, a connecting shaft rotatably installed inside the bearing, a U-shaped ring sleeved and fixed on the surface of the bearing, a lifting arm fixed to the top of the U-shaped ring, and two lifting lugs welded and fixed to the inner walls of both sides of the housing. The two ends of the lifting arm are respectively fixed to the two lifting lugs. Both ends of the connecting shaft are provided with an integral connecting plug. The flange shaft has a connecting slot for inserting the connecting plug, and a disassembly and assembly structure is provided between the connecting plug and the flange shaft.

[0009] Preferably, the disassembly and assembly structure includes a through pin and two annular pin seats fixed on the surface of the flange shaft. The surface of the connecting block is provided with a second through hole corresponding to the through pin. The surface of the flange shaft is provided with two first through holes corresponding to the annular pin seats. The through pin passes through both the connecting block and the flange shaft, and both ends of the through pin are inserted into the two annular pin seats respectively.

[0010] Preferably, the disassembly and assembly structure further includes a locking and limiting structure, which is disposed between the annular pin seat and the through pin.

[0011] Preferably, the locking and limiting structure includes an inner groove locked inside one side of the annular pin seat, a spring and a telescopic locking ball installed in the inner groove, and an annular locking groove opened on the surface of the pin end. The telescopic locking ball is movably installed in the inner groove by the spring, and the end of the telescopic locking ball pops out into the annular locking groove.

[0012] Preferably, one end of the spring is fixed to the inner wall of the inner groove, and the other end of the spring is fixed to the telescopic retaining bead.

[0013] Preferably, the disassembly and assembly structure further includes a threaded plug sleeved and installed on the surface of the annular pin seat, and the threaded plug is threadedly connected to the annular pin seat. A plug block is fixed on the inner wall of the threaded plug, and the end of the plug block is inserted into the inner side of the annular pin seat.

[0014] Preferably, the top end of the U-shaped ring is fixed to the boom by bolts, and the end of the boom is fixed to the lug by bolts.

[0015] Preferably, a discharge port is provided at the bottom left side of the housing, and the discharge port communicates with the interior of the housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By adding two hanging bearing support devices to the middle part of the screw shaft of the screw feeder, the middle part of the screw shaft can be effectively supported, ensuring sufficient strength of the screw shaft when running under full load, preventing the screw shaft from bending under full load, and ensuring the stable operation of the screw feeder. At the same time, the designed disassembly and assembly structure makes the hanging bearing support device easy to disassemble and assemble, facilitating subsequent disassembly and maintenance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention;

[0018] Figure 2 This utility model Figure 2 A magnified view of a portion of region A in the middle;

[0019] Figure 3 This is a sectional view of the connection between the connecting shaft and the flange shaft of this utility model;

[0020] Figure 4 This utility model Figure 3 A magnified view of a portion of region B in the middle;

[0021] In the diagram: 1. Housing; 2. Gear motor; 3. End shaft; 4. Intermediate shaft; 5. Hanging bearing support device; 51. Bearing bush; 52. Connecting shaft; 521. Connecting insert; 522. Through hole two; 53. Disassembly and assembly structure; 531. Through pin; 532. Annular pin seat; 533. Threaded plug; 534. Plug; 535. Inner groove; 536. Spring; 537. Telescopic retaining ball; 538. Annular retaining groove; 54. U-shaped ring; 55. Lifting arm; 56. Lifting lug; 6. Discharge port; 7. Flange shaft; 71. Connecting slot; 72. Through hole one. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Please see Figures 1 to 4 This is the first embodiment of the present invention, which provides a technical solution: a screw feeder for preventing shaft bending, comprising...

[0025] 1. A screw shaft rotatably mounted inside the housing 1 via bearings; 2. A geared motor 2 mounted on the right side surface of the housing 1 via bolts and whose output end is connected to the right end of the screw shaft.

[0026] The spiral shaft consists of two end shafts 3, an intermediate shaft 4 installed between the two end shafts 3, and two hanging bearing support devices 5 set at the connection between the intermediate shaft 4 and the end shafts 3. Both ends of the end shafts 3 and the intermediate shaft 4 are fixed with flange shafts 7.

[0027] The hanging bearing support device 5 includes a bearing 51, a connecting shaft 52 rotatably mounted inside the bearing 51 via bearings, a U-shaped ring 54 sleeved and fixed on the surface of the bearing 51, a lifting arm 55 fixed to the top of the U-shaped ring 54, and two lifting lugs 56 welded and fixed to the inner walls on both sides of the casing 1. The two ends of the lifting arm 55 are respectively fixed to the two lifting lugs 56. Both ends of the connecting shaft 52 are provided with integrated connecting blocks 521. The flange shaft 7 has a connecting slot 71 for the connecting blocks 521 to be inserted, and a disassembly and assembly structure 53 is provided between the connecting blocks 521 and the flange shaft 7. Through the design of the hanging bearing support device 5, the middle area of ​​the screw shaft, that is, the two ends of the middle shaft 4, can be effectively supported, ensuring sufficient strength of the screw shaft during subsequent full-load operation, avoiding bending in the middle area, and ensuring the stable operation of the screw feeder.

[0028] In this embodiment, preferably, the disassembly and assembly structure 53 includes a through pin 531 and two annular pin seats 532 welded and fixed to the surface of the flange shaft 7. The surface of the connecting block 521 is provided with a second through hole 522 corresponding to the through pin 531. The surface of the flange shaft 7 is provided with two first through holes 72 at positions corresponding to the annular pin seats 532, so that the through pin 531 can be inserted into the second through hole 522 and the first through hole 72, thereby simultaneously connecting the connecting block 521 and the flange shaft 7 and completing the insertion between the connecting block 521 and the flange shaft 7. The through pin 531 simultaneously connects the connecting block 521 and the flange shaft 7, and both ends of the through pin 531 are respectively inserted into the two annular pin seats 532.

[0029] In this embodiment, preferably, the disassembly and assembly structure 53 further includes a locking and limiting structure. The locking and limiting structure is disposed between the annular pin seat 532 and the through pin 531. The locking and limiting structure includes an inner groove 535 locked inside one side of the annular pin seat 532, a spring 536 and a telescopic locking ball 537 installed in the inner groove 535, and an annular groove 538 opened on the end surface of the through pin 531. The telescopic locking ball 537 is movably installed in the inner groove 535 by the spring 536, and the end of the telescopic locking ball 537 pops out into the annular groove 538, which can lock and limit the through pin 531, so that the through pin 531 can be effectively limited after insertion, ensuring the insertion stability between the flange shaft 7 and the connecting plug 521. When it is necessary to pull out the through pin 531 later, simply push the through pin 531 with force, so that the end of the telescopic locking ball 537 is gradually squeezed into the inner groove 535, and the through pin 531 can be smoothly pushed out from between the flange shaft 7 and the connecting plug 521.

[0030] In this embodiment, preferably, one end of the spring 536 is fixed to the inner wall of the inner groove 535, and the other end of the spring 536 is fixed to the telescopic locking bead 537.

[0031] In this embodiment, preferably, the top end of the U-shaped ring 54 is fixed to the boom 55 by bolts, and the end of the boom 55 is fixed to the lug 56 by bolts.

[0032] In this embodiment, preferably, a discharge port 6 is provided at the bottom left side of the housing 1, and the discharge port 6 communicates with the interior of the housing 1 for subsequent material feeding.

[0033] Example 2

[0034] Please see Figures 1 to 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the disassembly structure 53 also includes a threaded plug 533 sleeved on the surface of the annular pin seat 532. The threaded plug 533 is threadedly connected to the annular pin seat 532. A plug block 534 is fixed on the inner wall of the threaded plug 533, and the end of the plug block 534 is inserted into the inner side of the annular pin seat 532. This can effectively wrap and seal the annular pin seat 532, preventing coal from entering the plug block 534 during subsequent use. If the flange shaft 7 and the connecting insert 521 need to be separated later, simply unscrew the threaded plug 533 first, and then pull the pin 531 out from between the connecting insert 521 and the flange shaft 7. This will directly separate the connecting insert 521 from the flange shaft 7, completing the quick disassembly of the hanging tile support device 5.

[0035] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw feeder for preventing shaft bending, characterized in that: include The machine housing (1), the screw shaft rotatably installed inside the machine housing (1), and the geared motor (2) installed on the right side surface of the machine housing (1) with its output end connected to the right end of the screw shaft; The spiral shaft consists of two end shafts (3), an intermediate shaft (4) installed between the two end shafts (3), and two hanging tile support devices (5) set at the connection between the intermediate shaft (4) and the end shafts (3). Both ends of the end shafts (3) and the intermediate shaft (4) are fixed with flange shafts (7). The hanging bearing support device (5) includes a bearing (51), a connecting shaft (52) rotatably installed in the bearing (51), a U-shaped ring (54) sleeved and fixed on the surface of the bearing (51), a lifting arm (55) fixed at the top of the U-shaped ring (54), and two lifting lugs (56) welded and fixed to the inner walls of both sides of the housing (1). The two ends of the lifting arm (55) are respectively fixed on the two lifting lugs (56). Both ends of the connecting shaft (52) are provided with an integral connecting plug (521). The flange shaft (7) is provided with a connecting slot (71) for the connecting plug (521) to be inserted. A disassembly and assembly structure (53) is provided between the connecting plug (521) and the flange shaft (7).

2. A screw feeder for preventing shaft bending according to claim 1, characterized in that: The disassembly and assembly structure (53) includes a through pin (531) and two annular pin seats (532) fixed on the surface of the flange shaft (7). The surface of the connecting block (521) is provided with a second through hole (522) corresponding to the through pin (531). The surface of the flange shaft (7) is provided with two first through holes (72) corresponding to the annular pin seats (532). The through pin (531) passes through both the connecting block (521) and the flange shaft (7), and both ends of the through pin (531) are inserted into the two annular pin seats (532) respectively.

3. A screw feeder for preventing shaft bending according to claim 2, characterized in that: The disassembly and assembly structure (53) also includes a locking and limiting structure, which is disposed between the annular pin seat (532) and the through pin (531).

4. A screw feeder for preventing shaft bending according to claim 3, characterized in that: The locking and limiting structure includes an inner groove (535) locked inside one side of the annular pin seat (532), a spring (536) and a telescopic locking ball (537) installed in the inner groove (535), and an annular locking groove (538) opened on the end surface of the through pin (531). The telescopic locking ball (537) is movably installed in the inner groove (535) by the spring (536), and the end of the telescopic locking ball (537) pops out into the annular locking groove (538).

5. A screw feeder for preventing shaft bending according to claim 4, characterized in that: One end of the spring (536) is fixed to the inner wall of the inner groove (535), and the other end of the spring (536) is fixed to the telescopic ball (537).

6. A screw feeder for preventing shaft bending according to claim 2, characterized in that: The disassembly and assembly structure (53) further includes a threaded plug (533) sleeved on the surface of the annular pin seat (532), and the threaded plug (533) is threadedly connected to the annular pin seat (532). A plug block (534) is fixed on the inner wall of the threaded plug (533), and the end of the plug block (534) is inserted into the inner side of the annular pin seat (532).

7. A screw feeder for preventing shaft bending according to claim 1, characterized in that: The top end of the U-shaped ring (54) is fixed to the boom (55) by bolts, and the end of the boom (55) is fixed to the lug (56) by bolts.

8. A screw feeder for preventing shaft bending according to claim 1, characterized in that: The bottom left side of the housing (1) is provided with a discharge port (6), and the discharge port (6) is connected to the inside of the housing (1).

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