External oil injection pipe high temperature screw feeder

Abstract

An external oil injection pipe high temperature auger feeder, including auger feeder body and connected to its outside oil injection pipe, auger feeder body front end through bearing seat is equipped with bearing, auger auger shaft end sleeve is connected in bearing, the outer end of bearing seat is equipped with opening, in the opening place through screw is fixed with sealing cover, sealing cover and bearing seat between form oil injection cavity, the middle part of sealing cover is equipped with oil inlet joint, one end of oil injection pipe is connected to oil inlet joint, the other end extends to the feed inlet part of auger feeder body, the feeder is provided with sealing cover on bearing seat, forms airtight oil injection cavity through sealing cover in the outer side of bearing, and is provided with oil injection pipe and oil injection cavity communication, the process of auger feeder screw feeding, can be according to through oil injection pipe conveniently to the bearing in high temperature environment oil injection, solves the problem of the auger feeder from the dryer is removed to supplement lubricating oil operation troublesome, guarantees the dryer can high efficiency continuous operation, improves its drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of feeding devices for dryers, and in particular to a high-temperature auger feeder with an external oil injection pipe. Background Technology

[0002] A rotary drum dryer is a device that dries materials by rotating a drum. Its core principle is to use heat convection and heat conduction to allow high-temperature hot air to come into full contact with the materials inside the drum. At the same time, with the help of the inclined drum and the internal lifting plates, the materials are continuously lifted and scattered to form a material curtain. During rotation, the moisture evaporates and the material moves axially to the discharge end.

[0003] Rotary drum dryers typically use a screw feeder to deliver materials. The discharge end of the screw feeder needs to be inserted into the end of the drum so that the material can enter the drum from the discharge port. See utility model patent CN2015204899350 for a specific example of a screw-feeding dryer. A problem with using screw feeders is that the high temperature environment inside the drum causes the lubricating oil between the auger shaft and bearings inside the screw feeder to dry and evaporate rapidly. This leads to poor auger rotation and feeding, requiring frequent removal of the screw feeder from the dryer to replenish lubricating oil. This is cumbersome and affects the dryer's efficient continuous operation. Utility Model Content

[0004] To solve the above problems, this utility model proposes a high-temperature auger feeder with an external oil injection pipe.

[0005] The technical solution of this utility model is as follows: a high-temperature auger feeder with an external oil injection pipe, comprising an auger feeder body and an oil injection pipe connected to its outer side, the oil injection pipe being a high-temperature resistant metal pipe; a bearing is provided at the front end of the auger feeder body through a bearing seat, the bearing being installed inside the bearing seat, the end of the auger shaft being sleeved inside the bearing, an opening being provided at the outer end of the bearing seat, the opening exposing the side of the bearing, a sealing cover being fixed at the opening by screws, a limiting protrusion being provided on the inner side of the sealing cover, the limiting protrusion being sleeved on the port of the bearing seat, an oil injection cavity being formed between the sealing cover and the bearing seat, the oil injection cavity being connected to the bearing; an oil inlet connector is provided in the middle of the sealing cover, one end of the oil injection pipe is connected to the oil inlet connector, and the other end extends to the feed inlet of the auger feeder body.

[0006] Preferably, a plurality of graphite packing sealing rings are fitted on the inner auger shaft of the bearing housing, and an annular pressure plate is fitted on the auger shaft and pressed against the outer graphite packing sealing rings. A plurality of screw holes are evenly distributed on the edge of the annular plate, and the annular pressure plate is connected to the threaded holes on the bearing housing by screws.

[0007] Preferably, the housing of the auger feeder body is provided with a square maintenance port in the middle, and a cover plate is hinged to the maintenance port to close the maintenance port.

[0008] Preferably, the auger side edge is provided with a spiral pad, the spiral pad is located on the auger's top conveying surface, and the spiral pad is uniformly provided with through holes, which are fixed to the auger's spiral blades by installing screws in the through holes.

[0009] Preferably, the oil injection pipe has its port facing upwards, a sealing plug is provided inside the port of the oil injection pipe, and the oil injection pipe is fixed to the housing by a U-shaped buckle.

[0010] Preferably, the auger shaft is mainly composed of a hollow shaft, a front solid shaft, and a rear solid shaft, with the spiral blades disposed on the hollow shaft, and the front solid shaft and the rear solid shaft respectively fixedly mounted on both ends of the hollow shaft.

[0011] Preferably, the auger feeder body has a mounting bracket in the middle of the housing, which is welded and fixed to the housing, and the bracket has a mounting hole in the middle.

[0012] The beneficial technical effects of this utility model are:

[0013] ① The feeder is equipped with a sealing cover on the bearing housing, which forms a sealed oil injection chamber on the outer side of the bearing. An oil injection pipe is installed to connect to the oil injection chamber. During the screw feeding process, oil can be conveniently injected into the bearing in the high-temperature environment through the oil injection pipe. This solves the problem of the troublesome operation of disassembling the screw feeder from the dryer to replenish the lubricating oil, ensuring that the dryer can operate continuously with high efficiency and improving its drying efficiency.

[0014] ② By pressing the graphite packing sealing ring tightly onto the bearing housing to seal the end of the auger shaft, this sealing ring has a good dynamic sealing effect in high-temperature environments, preventing material from entering the bearing of the auger from the gap due to high-temperature thermal expansion, thus enabling it to operate safely and stably under high-temperature conditions. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 yes Figure 1 Top view;

[0017] Figure 3 yes Figure 2 A schematic diagram of the AA-direction cross-section structure;

[0018] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0019] Figure 5 yes Figure 2 Schematic diagram of the BB-direction cross-section structure;

[0020] Figure 6 This is a three-dimensional structural diagram of a partial component of this utility model.

[0021] In the diagram, 1. Housing, 11. Feed inlet, 12. Maintenance port, 13. Cover plate, 14. Hanging support, 2. Gear motor, 31. Bearing housing, 32. Bearing, 33. Sealing cover, 34. Oil filling chamber, 35. Oil inlet connector, 36. Oil filling pipe, 37. Sealing plug, 41. Graphite packing sealing ring, 42. Annular pressure plate, 5. Screw, 51. Spiral gasket, 52. Hollow shaft, 53. Front solid shaft, 54. Rear solid shaft, 6. Screw. Detailed Implementation

[0022] Example 1, see appendix Figure 1-6 A high-temperature auger feeder with an external oil injection pipe includes an auger 5 feeder body and an oil injection pipe 36 connected to its outer side; the front end of the auger 5 feeder body is provided with a bearing 32 through a bearing 32 seat 31, the end of the auger shaft of the auger 5 is sleeved in the bearing 32, the outer end of the bearing seat is provided with an opening, and a sealing cover 33 is fixed at the opening by screws 6. The size of the sealing cover matches the size of the bearing seat, and an oil injection cavity 34 is formed between the sealing cover 33 and the bearing 32 seat 31. The outer side of the bearing 32 is located in the oil injection cavity 34, and the port of the oil injection pipe 36 is arranged upward and a sealing plug 37 is provided in its port.

[0023] The sealing cover 33 has an oil inlet connector 35 in the middle. One end of the oil injection pipe 36 is connected to the oil inlet connector 35, and the other end extends to the feed port 11 of the auger 5 feeder body. The feed port 11 is on the outside of the drying drum and is in a relatively low temperature environment, where lubricating oil can be added conveniently and quickly.

[0024] The auger 5 feeder body has a hanging support 14 in the middle of the housing 1, which allows the feeder to be easily hoisted and transported.

[0025] The main body of the auger 5 feeder has a maintenance port 12 in the middle of the housing 1. A cover plate 13 is hinged to the maintenance port 12. When material blockage occurs inside the housing 1, the cover plate can be opened to facilitate unblocking through the maintenance port. The condition of the internal components of the housing 1 can also be observed through the maintenance port 12, which is conducive to timely detection and maintenance of problems.

[0026] In this embodiment, the external oiling pipe 36 of the high-temperature auger 5 feeder forms a sealed oiling chamber 34 on the outer side of the bearing 32 through the sealing cover 33, and the oiling pipe 36 is connected to the oiling chamber 34. During the spiral feeding process of the feeder, oil can be conveniently injected into the bearing 32 in the high-temperature environment through the oiling pipe. The oiling process is simple and efficient, ensuring that the dryer can operate continuously with high efficiency and improving its drying efficiency.

[0027] Example 2, see appendix Figure 3-4 Based on Embodiment 1, this embodiment has 4-6 graphite packing sealing rings 41 fitted on the inner auger shaft of bearing seat 32. An annular pressure plate 42 is fitted on the auger shaft and pressed against the outer graphite packing sealing ring 41. The annular pressure plate 42 is connected to bearing seat 32 31 by screws 6. Tightening the screws 6 generates a tightening force on the annular pressure plate 42, thereby pressing the annular pressure plate 42 against the graphite packing sealing ring 41.

[0028] This embodiment seals the end of the auger shaft by pressing the graphite packing sealing ring 41 against the bearing seat 31 of the bearing 32. This sealing ring has a good dynamic sealing effect in high-temperature environments, preventing material from entering the bearing 32 of the auger 5 from the gap due to high-temperature thermal expansion, thus enabling it to operate safely and stably under high-temperature conditions.

[0029] Example 3, see appendix Figure 3 Based on Embodiment 1, this embodiment designs the auger shaft as consisting of a hollow shaft 52, a front solid shaft 53, and a rear solid shaft 54. The front and rear solid shafts are respectively fixedly mounted on both ends of the hollow shaft. The main stress points of the auger 5 are at the connection between its two ends and the bearing 32. Therefore, its two ends are designed as solid shafts with higher strength and rigidity, and the middle part is designed as a lightweight hollow shaft 52. This satisfies the spiral drive of the auger 5 while achieving the design requirements of lightweighting and saving material costs.

[0030] The auger 5 has a spiral pad 51 on the side edge. The spiral pad is located on the top conveying surface of the auger. The spiral pad 51 is set to bear the friction of the material being pushed. If the wear is serious, the bolt pad can be replaced. It plays a role in protecting the blades of the auger 5 and improving its service life.

Claims

1. A high-temperature auger feeder with an externally mounted oil injection pipe, characterized in that: Includes the auger feeder body and the oil injection pipe connected to its outside; The front end of the auger feeder body is equipped with a bearing through a bearing seat. The end of the auger shaft is sleeved in the bearing. The outer end of the bearing seat has an opening. A sealing cover is fixed at the opening by screws. An oil injection chamber is formed between the sealing cover and the bearing seat. The sealing cap has an oil inlet connector in the middle. One end of the oil injection pipe is connected to the oil inlet connector, and the other end extends to the feed port of the auger feeder body.

2. The high-temperature auger feeder with external oil injection pipe according to claim 1, characterized in that: Several graphite packing sealing rings are fitted on the inner auger shaft of the bearing housing, and an annular pressure plate is fitted on the auger shaft and pressed against the outer graphite packing sealing rings. The annular pressure plate is connected to the bearing housing by screws.

3. The high-temperature auger feeder with external oil injection pipe according to claim 1, characterized in that: The auger feeder body has a maintenance port in the middle of its housing, and a cover plate is hinged to the maintenance port.

4. The high-temperature auger feeder with external oil injection pipe according to claim 1, characterized in that: The auger is provided with a spiral pad on the edge of its side, and the spiral pad is located on the auger's pushing and conveying surface.

5. A high-temperature auger feeder with an external oil injection pipe according to claim 1, characterized in that: The oil injection pipe has its port facing upwards, and a sealing plug is provided inside the port of the oil injection pipe.

6. A high-temperature auger feeder with an external oil injection pipe according to claim 1, characterized in that: The auger shaft is mainly composed of a hollow shaft, a front solid shaft, and a rear solid shaft, with the front solid shaft and the rear solid shaft respectively fixedly mounted on both ends of the hollow shaft.

7. A high-temperature auger feeder with an external oil injection pipe according to claim 1, characterized in that: The screw feeder body has a mounting bracket in the middle of its housing.

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