Mining anti-vibration screw conveyer

Abstract

The utility model relates to the technical field of spiral conveyors, in particular to a mining anti-vibration spiral conveyor which comprises a conveyor body, and the conveyor body comprises an outer barrel, a blade shaft and a spiral blade. A driving assembly and a sealing assembly are arranged at the two ends of the outer barrel correspondingly, and the rotary driver is in transmission connection with the blade shaft through a first coupler and used for controlling the blade shaft to rotate so as to drive the spiral blade to rotate. The sealing assembly is of an integrated structure and is detachably connected with the outer barrel through the fastening bolts, and replacement of the sealing assembly is facilitated. A first annular groove and a second annular groove are formed in the inner side wall of the sealing shaft sleeve in the axial direction. A first sealing ring is arranged in the first annular groove, and an oil seal is arranged in the second annular groove; the sealing performance of the sealing shaft sleeve can be improved through the double-sealing structure. Through the design of the mechanism, the structure is stable, the sealing effect is good, the maintenance frequency is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyors, in particular to an anti-vibration screw conveyor for mining. Background Art

[0002] Screw conveyor is a mechanical device that uses rotating spiral blades to move materials along a fixed casing to transport materials. Screw conveyor is widely used in mining, logistics and other fields due to its simple structure, small cross-sectional area, good sealing, simple operation and convenient closed transportation.

[0003] In the process of coal mining, production, transportation, processing, etc., in order to save manpower and material resources, improve production efficiency and reduce safety hazards, screw conveyors are usually used as conveying equipment. Because there are usually some fine coal powders in coal mines during mining; the existing screw conveyors vibrate greatly during operation, so the coal powders can easily enter the transmission system of the screw conveyors, causing the blades to rotate unevenly and the transmission to be uneven, stuck, and other problems. In addition, due to the long shaft of the blades, the existing screw conveyors will have the problem of axial deviation of the shaft of the blades after long-term use, which increases the maintenance frequency of the staff and reduces the mining efficiency. Therefore, it is necessary to propose a screw conveyor with stable structure and good sealing effect. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a mining anti-vibration screw conveyor with a stable structure, good sealing effect, reduced maintenance frequency and improved production efficiency.

[0005] According to an embodiment of the utility model, a vibration-proof screw conveyor for mining comprises:

[0006] A conveyor body, wherein the conveyor body is provided with an outer cylinder, wherein a blade shaft and a spiral blade arranged on the blade shaft are rotatably arranged in the outer cylinder;

[0007] A drive assembly, the drive assembly is arranged at one end of the outer cylinder; the drive assembly is provided with a rotary drive and a first coupling, and the output end of the rotary drive is detachably connected to the blade shaft through the first coupling;

[0008] A sealing assembly, wherein the sealing assembly is arranged at the other end of the outer cylinder; the sealing assembly is provided with a sealing shaft seat, a sealing sleeve, a rotating shaft and a second coupling; the sealing shaft seat is detachably connected to the outer cylinder by a fastening bolt; the sealing sleeve is sleeved on the rotating shaft, and the sealing sleeve and the sealing shaft seat are fixedly connected; the rotating shaft is detachably connected to the blade shaft by the second coupling; a first annular groove and a second annular groove are axially arranged on the inner side wall of the sealing sleeve, and a first sealing ring is arranged in the annular groove; an oil seal is arranged in the second annular groove.

[0009] According to some embodiments of the utility model, the first coupling and the second coupling are respectively provided with a first connecting head, a second connecting head and an intermediate disk, and a first slider and a second slider are respectively provided on both sides of the intermediate disk, a first sliding groove is provided on the first connecting head, and a second sliding groove is provided on the second connecting head, the first slider is slidably set in the first sliding groove, and the second slider is slidably set in the second sliding groove.

[0010] According to some embodiments of the present invention, the first sliding block and the second sliding block are trapezoidal sliding blocks; the first sliding groove and the sliding groove are trapezoidal sliding grooves.

[0011] According to some embodiments of the present invention, the intermediate disk is made of engineering plastics.

[0012] According to some embodiments of the present invention, the sealing assembly further includes two angular contact bearings, and the load directions of the two angular contact bearings are opposite.

[0013] According to some embodiments of the present invention, the first sealing ring is a Gly ring for a hole.

[0014] According to some embodiments of the present utility model, the sealing sleeve and the sealing shaft seat are interference fit.

[0015] According to some embodiments of the present invention, the slewing drive includes a hydraulic motor and a reducer.

[0016] According to some embodiments of the present invention, the inner peripheral wall of the outer cylinder is provided with a flame retardant and anti-static layer.

[0017] According to some embodiments of the present invention, a plurality of observation windows are provided on the side wall of the outer cylinder.

[0018] According to an embodiment of the utility model, a vibration-proof screw conveyor for mining has at least the following beneficial effects:

[0019] According to the scheme of the utility model, the anti-vibration screw conveyor for mining includes a conveyor body, which includes an outer cylinder, a blade shaft and a spiral blade; the two ends of the outer cylinder are respectively provided with a driving assembly and a sealing assembly, the driving assembly includes a rotary drive and a first coupling, the rotary drive is connected to the blade shaft through the first coupling to control the rotation of the blade shaft, thereby driving the spiral blade to rotate. The sealing assembly includes a sealing shaft seat, a sealing sleeve, a rotating shaft and a second coupling; the sealing assembly adopts an integrated structure, which is detachably connected to the outer cylinder through a fastening bolt, so as to facilitate the replacement of the sealing assembly. The rotating shaft is detachably connected to the blade shaft through the second coupling; the sealing sleeve is sleeved on the rotating shaft, and the inner side wall of the sealing sleeve is axially provided with a first annular groove and a second annular groove; the first annular groove is provided with a first sealing ring, and the second annular groove is provided with an oil seal; the double sealing structure can improve the sealing performance of the sealing sleeve, and can prevent vibration from causing coal powder to enter the sealing assembly. Through the design of this mechanism, the structure is stable, the sealing effect is good, the maintenance frequency is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of the utility model;

[0021] Figure 2 A structural schematic diagram of the sealing assembly of the utility model;

[0022] Figure 3 A schematic diagram of the structure of the drive assembly of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the first coupling or the second coupling of the utility model.

[0024] In the figure:

[0025] 100- conveyor body, 110- outer cylinder, 120- blade shaft, 130- spiral blade, 140- flame retardant anti-static layer, 150- observation window;

[0026] 200-driving assembly, 210-slewing driving, 211-hydraulic motor, 212-reducer, 220-first coupling, 221-first connecting head, 222-second connecting head, 223-intermediate plate, 224-first sliding block, 225-second sliding block, 226-first sliding groove, 227-second sliding groove;

[0027] 300-seal assembly, 310-seal shaft seat, 320-seal sleeve, 321-first annular groove, 322-second annular groove, 323-first sealing ring, 234-oil seal, 330-rotating shaft, 340-second coupling, 350-fastening bolt, 360-angular contact bearing. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figure 1As shown in the figure, the utility model discloses a vibration-proof screw conveyor for mining, which includes a conveyor body 100, a drive assembly 200 and a sealing assembly 300; the conveyor body 100 is provided with an outer cylinder 110, and a blade shaft 120 and a spiral blade 130 arranged on the blade shaft 120 are rotatably arranged in the outer cylinder 110; the drive assembly 200 is arranged at one end of the outer cylinder 110; the drive assembly 200 is provided with a rotary drive 210 and a first coupling 220, and the output end of the rotary drive 210 is detachably connected to the blade shaft 120 through the first coupling 220; the sealing assembly 300 is arranged at the other end of the outer cylinder 110 end; the sealing assembly 300 is provided with a sealing shaft seat 310, a sealing sleeve 320, a rotating shaft 330 and a second coupling 340; the sealing shaft seat 310 is detachably connected to the outer cylinder 110 by a fastening bolt 350; the sealing sleeve 320 is sleeved on the rotating shaft 330, and the sealing sleeve 320 and the sealing shaft seat 310 are fixedly connected; the rotating shaft 330 is detachably connected to the blade shaft 120 by the second coupling 340; a first annular groove 321 and a second annular groove 322 are axially arranged on the inner side wall of the sealing sleeve 320, and a first sealing ring 323 is arranged in the first annular groove 321; an oil seal 324 is arranged in the second annular groove 322.

[0033] Specifically, in the present embodiment, the conveyor body 100 includes an outer cylinder 110, a blade shaft 120 and a spiral blade 130, and the spiral blade 130 is spirally wound on the blade shaft 120 along the axial direction of the blade shaft 120; a driving assembly 200 and a sealing assembly 300 are respectively provided at both ends of the outer cylinder 110, and the driving assembly 200 and the sealing assembly 300 are respectively connected to both ends of the blade shaft 120 to control and carry the rotation of the blade shaft 120. In the present embodiment, the driving assembly 200 includes a rotary drive 210 and a first coupling 220, and the rotary drive 210 is connected to the blade shaft 120 through the first coupling 220 to control the rotation of the spiral blade 130, thereby driving the spiral blade 130 to rotate. The sealing assembly 300 includes a sealing shaft seat 310, a sealing sleeve 320, a rotating shaft 330 and a second coupling 340; the sealing assembly 300 adopts an integrated structure, and the sealing shaft seat 310 is detachably connected to the outer cylinder 110 through a fastening bolt 350, so as to facilitate the replacement of the sealing assembly 300. The rotating shaft 330 is detachable through the second coupling 340 and the blade shaft 120; the sealing sleeve 320 is sleeved on the rotating shaft 330, and a first annular groove 321 and a second annular groove 322 are axially arranged on the inner side wall of the sealing sleeve 320; a first sealing ring 323 is arranged in the first annular groove 321, and an oil seal 324 is arranged in the second annular groove 322; the sealing performance of the sealing sleeve 320 can be improved by the double sealing structure. It can avoid vibration causing coal powder to enter the sealing assembly 300. Through the design of this mechanism, the structure is stable, the sealing effect is good, the maintenance frequency is reduced, and the production efficiency is improved.

[0034] In some embodiments of the utility model, the first coupling 220 and the second coupling 340 are respectively provided with a first connector 221, a second connector 222 and an intermediate disk 223, and the first slider 224 and the second slider 225 are respectively provided on both sides of the intermediate disk 223, the first connector 221 is provided with a first slide 226, the second connector 222 is provided with a second slide 227, the first slider 224 is slidably arranged in the first slide 226, and the second slider 225 is slidably arranged in the second slide 227. In this embodiment, during the transportation process of the coal mine, the rotation speed of the spiral blade 130 is low, the load is high, and the length of the blade shaft 120 is usually more than 3m. Through the first coupling 220 and the second coupling 340, the up and down swing problem of the blade shaft 120 caused by non-concentricity during rotation can be eliminated. Specifically, in this embodiment, the first coupling 220 and the second coupling 340 adopt a slider coupling. The first slider 224 or the second slider 225 can be fine-tuned in the first slide groove 226 or the second slide groove 227, which can eliminate the additional load between the shafts during the automatic control of the motor, realize the integration of sliding and rotation, and improve the uniformity of load distribution on the working surface, thereby transmitting a larger torque.

[0035] In some embodiments of the utility model, the first slider 224 and the second slider 225 are trapezoidal sliders; the first slide groove 226 and the second slide groove 227 are trapezoidal slide grooves. In this embodiment, the first coupling 220 and the second coupling 340 are respectively provided with a first connector 221, a second connector 222 and an intermediate disk 223. During use, the relative displacement between the shafts is automatically corrected by the automatic adjustment of the intermediate disk 223. In this embodiment, the combination of the trapezoidal slider and the trapezoidal slide groove not only has a guiding effect, but also can increase the contact area between the slider and the slide groove, and can evenly distribute the impact force generated by the first connector 221, the second connector 222 and the intermediate disk 223 during rotation on the intermediate disk 223, thereby increasing the service life of the intermediate disk 223.

[0036] In some embodiments of the present invention, the intermediate disk 223 is made of engineering plastics. For example, polyetheretherketone. The intermediate disk 223 made of polyetheretherketone has extremely high strength and rigidity, as well as excellent wear resistance and chemical resistance. It has excellent wear resistance in harsh environments such as high temperature, high load, and strong corrosion. Polyetheretherketone also has self-lubricating properties and can achieve oil-free lubrication. It also has the function of absorbing vibration and reducing noise.

[0037] In some embodiments of the utility model, the sealing assembly 300 further includes two angular contact bearings 360, and the load directions of the two angular contact bearings 360 are opposite. In this embodiment, the two angular contact bearings 360 are respectively sleeved on the rotating shaft 330 and fixed on the sealing shaft seat 310 to achieve relative rotation of the rotating shaft 330 and the sealing shaft seat 310. The connection method of the double angular contact bearings 360 can bear radial loads and axial loads at the same time. In this embodiment, the line connecting the steel ball of the angular contact bearing 360 and the contact points of the inner and outer rings is 40° with the radial direction, which can improve the load bearing capacity of the angular contact bearing 360.

[0038] In some embodiments of the utility model, the first sealing ring 323 is a grid ring for the hole. The grid ring for the hole in this embodiment is a rubber O-type sealing ring combined with a polytetrafluoroethylene ring. It not only provides excellent static sealing performance and effectively prevents the leakage of lubricating oil and the entry of coal mine powder, but also because its design allows a larger extrusion gap, it can maintain an efficient sealing effect even when there is a slight deviation in the installation. Its characteristics of low friction and less frictional heat generation ensure low energy consumption and high efficiency of the sealing assembly 300 during operation, while avoiding creeping and ensuring the stability of operation. In addition, the first annular groove 321 has a simple structure, is easy to manufacture and install, has strong wear resistance, and has a long service life. It will not adhere even after long periods of inactivity or storage.

[0039] In some embodiments of the utility model, the sealing sleeve 320 and the sealing shaft seat 310 are interference fit. In this embodiment, the sealing sleeve 320 and the sealing shaft seat 310 are interference fit to prevent the sealing sleeve 320 from rotating relative to the sealing shaft seat 310, thereby improving the sealing performance of the sealing assembly 300.

[0040] In some embodiments of the utility model, the slewing drive 210 includes a hydraulic motor 211 and a reducer 212. In this embodiment, the output end of the hydraulic motor 211 is connected to the input end of the reducer 212 by transmission, the input end of the reducer 212 is connected to the first coupling 220 by transmission, and the first coupling 220 is connected to the blade shaft 120 by transmission. In this embodiment, the hydraulic motor 211 and the reducer 212 have advantages such as high transmission efficiency, can control the blade shaft 120 to rotate at a constant speed, and provide a large torque output to the blade shaft 120. In addition, it also has the advantages of ruggedness, overload protection, smooth and precise control, compact size and high power density, minimum heat generation, reduced noise level, easy integration, high starting torque, long service life, remote operation and environmental considerations.

[0041] In some embodiments of the utility model, the inner wall of the outer cylinder 110 is provided with a flame retardant antistatic layer 140. In this embodiment, the flame retardant antistatic layer 140 can be a combination of one or more materials including silicone rubber, thermoplastic elastomer, and high-strength flame retardant antistatic rubber materials. In this embodiment, the flame retardant antistatic layer 140 using silicone rubber as the inner wall of the outer cylinder 110 has the advantages of excellent high and low temperature resistance, excellent weather resistance, stable electrical insulation characteristics, good chemical resistance, etc. It can be used as a flame retardant material to prevent accidents caused by high temperatures generated during transportation of coal mines.

[0042] In some embodiments of the present invention, a plurality of observation windows 150 are provided on the side wall of the outer cylinder 110. By providing the observation windows 150 on the outer cylinder 110, the movement state inside the outer cylinder 110 can be monitored in real time, and the part where the coal mine is stuck can be cleared in time.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A vibration-proof screw conveyor for mining, characterized in that: include: A conveyor body (100), wherein the conveyor body (100) is provided with an outer cylinder (110), wherein a blade shaft (120) and a spiral blade (130) arranged on the blade shaft (120) are rotatably arranged inside the outer cylinder (110); A drive assembly (200), wherein the drive assembly (200) is arranged at one end of the outer cylinder (110); the drive assembly (200) is provided with a rotary drive (210) and a first coupling (220), and an output end of the rotary drive (210) is detachably connected to the blade shaft (120) via the first coupling (220); A sealing assembly (300) is provided at the other end of the outer cylinder (110); the sealing assembly (300) is provided with a sealing shaft seat (310), a sealing shaft sleeve (320), a rotating shaft (330) and a second coupling (340); the sealing shaft seat (310) is detachably connected to the outer cylinder (110) via a fastening bolt (350); the sealing shaft sleeve (320) is sleeved on the rotating shaft (330), and the sealing shaft The sleeve (320) is fixedly connected to the sealing shaft seat (310); the rotating shaft (330) is detachably connected to the blade shaft (120) via the second coupling (340); a first annular groove (321) and a second annular groove (322) are axially arranged on the inner side wall of the sealing shaft sleeve (320), and a first sealing ring (323) is arranged in the first annular groove (321); and an oil seal (324) is arranged in the second annular groove (322).

2. The anti-vibration screw conveyor for mining according to claim 1, characterized in that: The first coupling (220) and the second coupling (340) are respectively provided with a first connecting head (221), a second connecting head (222) and an intermediate disk (223); a first slider (224) and a second slider (225) are respectively provided on both sides of the intermediate disk (223); a first slide groove (226) is provided on the first connecting head (221); a second slide groove (227) is provided on the second connecting head (222); the first slider (224) is slidably arranged in the first slide groove (226); and the second slider (225) is slidably arranged in the second slide groove (227).

3. The anti-vibration screw conveyor for mining according to claim 2, characterized in that: The first sliding block (224) and the second sliding block (225) are trapezoidal sliding blocks; the first sliding groove (226) and the second sliding groove (227) are trapezoidal sliding grooves.

4. The anti-vibration screw conveyor for mining according to claim 3, characterized in that: The intermediate disk (223) is made of engineering plastics.

5. The anti-vibration screw conveyor for mining according to claim 1, characterized in that: The sealing assembly (300) further comprises two angular contact bearings (360), and the load directions of the two angular contact bearings (360) are opposite.

6. The anti-vibration screw conveyor for mining according to claim 1, characterized in that: The first sealing ring (323) is a hole-use Gly ring.

7. The anti-vibration screw conveyor for mining according to claim 1, characterized in that: The sealing shaft sleeve (320) and the sealing shaft seat (310) are interference fit.

8. The anti-vibration screw conveyor for mining according to claim 1, characterized in that: The slewing drive (210) includes a hydraulic motor (211) and a reducer (212).

9. The anti-vibration screw conveyor for mining according to claim 1, characterized in that: The inner peripheral wall of the outer cylinder (110) is provided with a flame retardant and anti-static layer (140).

10. The anti-vibration screw conveyor for mining according to claim 9, characterized in that: A plurality of observation windows (150) are arranged on the side wall of the outer cylinder (110).

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