Anti-blocking spiral device of coal silo

Abstract

According to the technical scheme, the anti-blocking spiral device of the coal silo comprises a main center shaft, a planetary spiral mechanism and a rotary walking mechanism, a T-shaped sleeve is arranged on the outer side of the main center shaft in a sleeved mode, a center bearing is installed between the main center shaft and the T-shaped sleeve, one end of the planetary spiral mechanism is connected with a spiral mechanism rotation motor, and the other end of the planetary spiral mechanism is connected with the rotary walking mechanism. A ball bearing is installed between the screw mechanism rotation motor and the inner wall of the T-shaped sleeve, the screw mechanism rotation motor is fixed to the top of the rotary walking mechanism, the rotary walking mechanism is connected with a walking motor, and a rail is installed at the bottom of the rotary walking mechanism. Revolution and rotation of the anti-blocking spiral device are realized through the rotary walking mechanism and the planetary spiral mechanism, so that blocked and arched coal in the bottom of the coal silo is completely broken.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal silo anti -blocking technical field relates to coal silo anti -blocking spiral device. BACKGROUND

[0002] Coal silo, also known as raw coal bunker, refers to the granular material storage bunker of raw coal, coal slime and the like in thermal power plants, and is very popular. The conventional coal silo arrangement form is usually that the coal silo opening is square cone type or conical type, and the side wall of the coal silo opening is arranged on the wall at an angle of at least 60° according to the coal quality characteristics. Since coal flows in the conical container, the flow is more downward, the area is smaller, the coal itself is extruded, the pressure is larger and larger, the friction between the coal particles and between the coal and the silo wall is larger and larger, the coal particles agglomerate, the characteristic size increases significantly, and the silo is easily blocked and arched, which seriously affects the normal operation of the equipment. Especially in large thermal power plants equipped with direct-fired pulverizing systems, once the coal silo is blocked, the unit is forced to reduce power and shed load, or the boiler combustion is unstable, resulting in a large amount of oil injection, and in severe cases, the boiler is extinguished and the unit is non-planned shutdown.

[0003] The current common coal silo unblocking measures include manual unblocking, or increasing a vibrator or an air cannon on the opening and the wall. Manual unblocking usually includes poking coal through a coal hole, knocking the blocked coal part with a sledgehammer, setting a bell-shaped heavy hammer outside the silo at the easily blocked coal part, and the like, which consumes a lot of manpower, causes great damage to the wall, and a large amount of coal slime and raw coal is accumulated on the site when the coal is poked, causing serious environmental pollution. The unblocking principle of the vibrator is the same as manual knocking, the coal adhered to the wall is gradually separated through the vibration of the wall to achieve the purpose of unblocking, but serious vibration may cause the silo to be blocked, making the blockage more serious, and a new mouse hole is formed by air dredging, so the method needs to be used in combination with manual unblocking. The working medium of the air cannon is compressed air, and the main components include an air tank, an electromagnetic quick closing valve and a control system, etc. When the electromagnetic quick closing valve is quickly opened, the compressed air in the air tank is subjected to pressure difference to form a high-speed ejected strong air flow, and the high kinetic energy air directly impacts the blocked part in the silo to make the coal particles flow under the action of gravity. However, the air cannon must be located at the arching position to play a role, and if the air cannon is located above the arching position, the coal will be more compacted. Since the arching and blocking position of the raw coal bunker is uncertain and changes constantly due to the influence of coal quality and the like, the method cannot effectively unblock. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide coal silo anti -blocking spiral device, solved the problem that present coal silo anti -blocking device cannot effectively unblock.

[0005] The utility model adopts the technical scheme, coal silo prevents the helical device of blocking, including main centre axle, planet screw mechanism and rotary walking mechanism, the outside of main centre axle is equipped with T type sleeve, is installed with centre bearing between main centre axle and T type sleeve, one end of planet screw mechanism is connected with screw mechanism autorotation motor, and the other end is embedded in T type sleeve, is installed with ball bearing between T type sleeve inner wall, screw mechanism autorotation motor is fixed in rotary walking mechanism top, and rotary walking mechanism is connected with walking motor, and the bottom of rotary walking mechanism is installed with track.

[0006] Among them, planet screw mechanism is fixed by rotating shaft and spiral blade, and spiral blade is welded and fixed on the side wall of rotating shaft.

[0007] The output shaft of screw mechanism autorotation motor is connected with rotating shaft through a shaft coupling.

[0008] Main centre axle is vertically fixed in central support storehouse, and the side wall of central support storehouse is provided with annular groove that can make planet screw mechanism end pass.

[0009] Threaded hole is formed in the bottom of central support storehouse.

[0010] The top of central support storehouse is conical.

[0011] Main centre axle is two-stage shaft, including first-stage shaft of top and second-stage shaft of bottom, and the diameter of second-stage shaft is greater than that of first-stage shaft, T type sleeve is welded by middle sleeve and side sleeve, middle sleeve is sleeved on first-stage shaft, the inner diameter of middle sleeve is less than the diameter of second-stage shaft, and planet screw mechanism end is embedded in side sleeve.

[0012] It also includes annular storehouse, screw mechanism autorotation motor, rotary walking mechanism, walking motor and track are installed in annular storehouse, and annular groove that can make planet screw mechanism end pass is formed in the inner side wall of annular storehouse.

[0013] Threaded hole is formed in the side wall and bottom of annular storehouse respectively.

[0014] The top surface of annular storehouse is inclined to main centre axle.

[0015] The utility model has the advantages as follows:

[0016] (1) the revolution and rotation of anti-blocking helical device are realized through rotary walking mechanism and planet screw mechanism, so that the coal jammed and arched in the bottom of coal silo is completely broken;

[0017] (2) walking motor is connected with rotary walking mechanism, track is installed in the bottom of rotary walking mechanism, and walking motor drives rotary walking mechanism to make rotary motion on track, so as to drive planet screw mechanism to make rotary motion around main centre axle, and revolution is realized.

[0018] (3) The planetary screw mechanism is connected with a screw mechanism autorotation motor at one end and connected with the main central shaft through a T-shaped sleeve at the other end, the screw mechanism autorotation motor drives the planetary screw mechanism to rotate, and autorotation is realized;

[0019] (4) The planetary screw mechanism is composed of a rotating shaft and screw blades, the screw blades are welded and fixed on the side wall of the rotating shaft, the screw mechanism autorotation motor is started, the screw blades start to rotate, the rotation of the screw blades generates centrifugal force, and the blocked coal is pushed forward along the surface of the blades to realize the breaking of the blocked and arched coal;

[0020] (5) The main central shaft is vertically fixed in the central support bin, so that the planetary screw mechanism can rotate around the main central shaft, and the coal blocked at the bin mouth of the coal silo is moved to realize the breaking of the blockage;

[0021] (6) Threaded holes are formed in the bottom of the central support bin, so that the central support bin can be fixed on the bottom of the coal silo through bolts during application, and the top of the central support bin is conical, so that the coal on the top can slide down, so as to avoid the central support bin from being damaged due to the accumulation of a large amount of coal on the top;

[0022] (7) The main central shaft is a two-stage shaft, the diameter of the second-stage shaft is larger than that of the first-stage shaft, the T-shaped sleeve is composed of a middle sleeve and side sleeves, the middle sleeve is sleeved on the first-stage shaft, and the inner diameter of the middle sleeve is smaller than the diameter of the second-stage shaft, so that the T-shaped sleeve is prevented from sliding downward during the rotation of the planetary screw mechanism, and the stability of the whole anti-blocking screw device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view of the coal silo anti-blocking screw device of the utility model;

[0024] Figure 2 is an enlarged view of the internal structure of the coal silo anti-blocking screw device of the utility model;

[0025] Figure 3 is a structure view of the main central shaft and the T-shaped sleeve in the coal silo anti-blocking screw device of the utility model.

[0026] In the drawing, 1. Main central shaft, 2. T-shaped sleeve, 3. Central support bin, 4. Planetary screw mechanism, 5. Track, 6. Rotary traveling mechanism, 7. Traveling motor, 8. Screw mechanism autorotation motor, 9. Coal silo bin mouth, 10. Coal silo bottom, 11. Annular bin. DETAILED DESCRIPTION

[0027] The utility model will be described in detail in combination with the drawings and specific embodiments.

[0028] Example 1

[0029] The coal silo anti-blocking screw device, referring to Figure 1and Figure 2 , including the main center axis 1, planetary screw mechanism 4 and rotary walking mechanism 6, the outer side of the main center axis 1 is sleeved with T sleeve 2, the center bearing is installed between the main center axis 1 and T sleeve 2, one end of the planetary screw mechanism 4 is connected with screw mechanism rotation motor 8, the other end is embedded in T sleeve 2, the ball bearing is installed between the inner wall of T sleeve 2, the screw mechanism rotation motor 8 is fixed on the top of rotary walking mechanism 6, the walking motor 7 is connected with rotary walking mechanism 6, the track 5 is installed at the bottom of rotary walking mechanism 6.

[0030] The planetary screw mechanism 4 is composed of rotating shaft and spiral blade fixed, the spiral blade is welded and fixed on the side wall of rotating shaft, the spiral blade starts to rotate by starting the screw mechanism rotation motor, the rotation of spiral blade will generate centrifugal force, which will push the blocked coal forward along the surface of blade, so as to break the blocked and arching coal.

[0031] Example 2

[0032] The coal silo anti-blocking spiral device comprises a main center axis 1, a planetary screw mechanism 4 and a rotary walking mechanism 6, the outer side of the main center axis 1 is sleeved with a T sleeve 2, a center bearing is installed between the main center axis 1 and the T sleeve 2, one end of the planetary screw mechanism 4 is connected with a screw mechanism rotation motor 8, the other end is embedded in the T sleeve 2, a ball bearing is installed between the inner wall of the T sleeve 2, the screw mechanism rotation motor 8 is fixed on the top of the rotary walking mechanism 6, the walking motor 7 is connected with the rotary walking mechanism 6, and the track 5 is installed at the bottom of the rotary walking mechanism 6.

[0033] The planetary screw mechanism 4 is composed of rotating shaft and spiral blade fixed, the spiral blade is welded and fixed on the side wall of rotating shaft, the output shaft of the screw mechanism rotation motor 8 is connected with the rotating shaft through a shaft coupling.

[0034] The main center axis 1 is vertically fixed in the center support bin 3, and an annular groove is formed in the side wall of the center support bin 3, so that the end of the planetary screw mechanism 4 can pass through.

[0035] Example 3

[0036] The coal silo anti-blocking spiral device comprises a main center axis 1, a planetary screw mechanism 4 and a rotary walking mechanism 6, the outer side of the main center axis 1 is sleeved with a T sleeve 2, a center bearing is installed between the main center axis 1 and the T sleeve 2, one end of the planetary screw mechanism 4 is connected with a screw mechanism rotation motor 8, the other end is embedded in the T sleeve 2, a ball bearing is installed between the inner wall of the T sleeve 2, the screw mechanism rotation motor 8 is fixed on the top of the rotary walking mechanism 6, the walking motor 7 is connected with the rotary walking mechanism 6, and the track 5 is installed at the bottom of the rotary walking mechanism 6.

[0037] The planetary spiral mechanism 4 is composed of a rotating shaft and spiral blades fixed on the side wall of the rotating shaft. The output shaft of the spiral mechanism self-rotating motor 8 is connected with the rotating shaft through a shaft coupling.

[0038] A threaded hole is formed in the bottom of the center support bin 3, which is convenient for fixing the center support bin 3 on the bottom of the coal silo by bolts. The top of the center support bin 3 is conical, which is convenient for the coal to slide down, so as to avoid the center support bin from being damaged by the accumulation of a large amount of coal on the top.

[0039] Example 4

[0040] The coal silo anti-blocking spiral device comprises a main central shaft 1, a planetary spiral mechanism 4 and a rotary walking mechanism 6. The main central shaft 1 is sleeved with a T-shaped sleeve 2. A center bearing is installed between the main central shaft 1 and the T-shaped sleeve 2. The spiral mechanism self-rotating motor 8 is connected to one end of the planetary spiral mechanism 4. The other end of the planetary spiral mechanism 4 is embedded in the T-shaped sleeve 2. A ball bearing is installed between the T-shaped sleeve 2 and the inner wall of the T-shaped sleeve 2. The spiral mechanism self-rotating motor 8 is fixed on the top of the rotary walking mechanism 6. The rotary walking mechanism 6 is connected with a walking motor 7. The rotary walking mechanism 6 is installed with a track 5 at the bottom.

[0041] The planetary spiral mechanism 4 is composed of a rotating shaft and spiral blades fixed on the side wall of the rotating shaft. The output shaft of the spiral mechanism self-rotating motor 8 is connected with the rotating shaft through a shaft coupling.

[0042] The main central shaft 1 is vertically fixed in the center support bin 3. The side wall of the center support bin 3 is provided with an annular groove through which the end of the planetary spiral mechanism 4 passes.

[0043] Referring to Figure 3 , the main central shaft 1 is a two-step shaft, comprising a first step shaft at the top and a second step shaft at the bottom. The diameter of the second step shaft is larger than that of the first step shaft. The T-shaped sleeve 2 is composed of a middle sleeve and a side sleeve. The middle sleeve is sleeved on the first step shaft. The inner diameter of the middle sleeve is smaller than the diameter of the second step shaft. The end of the planetary spiral mechanism 4 is embedded in the side sleeve, which can prevent the T-shaped sleeve from sliding down during the rotation of the planetary spiral mechanism, and improve the stability of the entire anti-blocking spiral device.

[0044] Example 5

[0045] The coal silo anti-blocking spiral device comprises a main central shaft 1, a planetary spiral mechanism 4 and a rotary walking mechanism 6, a T-shaped sleeve 2 is sleeved outside the main central shaft 1, a central bearing is installed between the main central shaft 1 and the T-shaped sleeve 2, a spiral mechanism self-rotation motor 8 is connected to one end of the planetary spiral mechanism 4, the other end is embedded in the T-shaped sleeve 2, a ball bearing is installed between the inner wall of the T-shaped sleeve 2, the spiral mechanism self-rotation motor 8 is fixed on the top of the rotary walking mechanism 6, a walking motor 7 is connected to the rotary walking mechanism 6, and a track 5 is installed at the bottom of the rotary walking mechanism 6.

[0046] The main central shaft 1 is a two-stage shaft, comprising a first-stage shaft at the top and a second-stage shaft at the bottom, the diameter of the second-stage shaft is larger than that of the first-stage shaft, the T-shaped sleeve 2 is composed of a middle sleeve and a side sleeve and is welded together, the middle sleeve is sleeved on the first-stage shaft, the inner diameter of the middle sleeve is smaller than the diameter of the second-stage shaft, and the end of the planetary spiral mechanism 4 is embedded in the side sleeve.

[0047] The planetary spiral mechanism 4 is composed of a rotating shaft and spiral blades, and the spiral blades are fixedly welded on the side wall of the rotating shaft.

[0048] The main central shaft 1 is vertically fixed in a central support bin 3, and an annular groove is formed in the side wall of the central support bin 3 and can allow the end of the planetary spiral mechanism 4 to pass through.

[0049] A threaded hole is formed in the bottom of the central support bin 3, and the top of the central support bin 3 is conical.

[0050] Embodiment 6

[0051] The coal silo anti-blocking spiral device comprises a main central shaft 1, a planetary spiral mechanism 4, a rotary walking mechanism 6 and an annular bin 11, a T-shaped sleeve 2 is sleeved outside the main central shaft 1, a central bearing is installed between the main central shaft 1 and the T-shaped sleeve 2, a spiral mechanism self-rotation motor 8 is connected to one end of the planetary spiral mechanism 4, the other end is embedded in the T-shaped sleeve 2, a ball bearing is installed between the inner wall of the T-shaped sleeve 2, the spiral mechanism self-rotation motor 8 is fixed on the top of the rotary walking mechanism 6, a walking motor 7 is connected to the rotary walking mechanism 6, and a track 5 is installed at the bottom of the rotary walking mechanism 6.

[0052] The main central shaft 1 is a two-stage shaft, comprising a first-stage shaft at the top and a second-stage shaft at the bottom, the diameter of the second-stage shaft is larger than that of the first-stage shaft, the T-shaped sleeve 2 is composed of a middle sleeve and a side sleeve and is welded together, the middle sleeve is sleeved on the first-stage shaft, the inner diameter of the middle sleeve is smaller than the diameter of the second-stage shaft, and the end of the planetary spiral mechanism 4 is embedded in the side sleeve.

[0053] The planetary spiral mechanism 4 is composed of a rotating shaft and spiral blades, and the spiral blades are fixedly welded on the side wall of the rotating shaft.

[0054] The output shaft of the spiral mechanism self-rotating motor 8 is connected with the rotating shaft through a shaft coupling.

[0055] The main central shaft 1 is vertically fixed in the central support bin 3, and an annular groove is formed in the side wall of the central support bin 3 to allow the end of the planetary spiral mechanism 4 to pass through.

[0056] A threaded hole is formed in the bottom of the central support bin 3, and the top of the central support bin 3 is conical.

[0057] The spiral mechanism self-rotating motor 8, the rotary walking mechanism 6, the walking motor 7 and the track 5 are all installed in the annular bin 11, and an annular groove is formed in the inner side wall of the annular bin 11 to allow the end of the planetary spiral mechanism 4 to pass through.

[0058] The outer part of the annular groove in the side of the central support bin and the annular bin is respectively provided with an elastic protective cover, and the elastic protective cover is only fixed at the top of the annular groove, and the bottom and the two sides are not fixed, which can reduce the coal particles entering the central support bin and the annular bin through the annular groove while not affecting the rotary motion of the planetary spiral mechanism.

[0059] Threaded holes are formed in the side wall and the bottom of the annular bin 11, and the top surface of the annular bin 11 is inclined to the main central shaft 1, so that the coal on the top surface can slide down, thereby avoiding the accumulation of a large amount of coal on the top of the annular bin and the damage of the annular bin.

[0060] When the spiral device for preventing coal silo from being blocked is applied, it is fixed on the bottom surface in the coal silo, the central support bin 3 is fixed on the center of the bottom 10 of the coal silo through bolts, the annular bin 11 is fixed around the bottom 10 of the coal silo, the side wall of the annular bin 11 is attached to the side wall of the coal silo to avoid the coal particles entering the gap between the annular bin and the coal silo, and the planetary spiral mechanism 4 is located on the top of the coal silo opening 9.

[0061] The spiral device for preventing coal silo from being blocked is realized by the rotary walking mechanism and the planetary spiral mechanism, the walking motor is connected to the rotary walking mechanism, the track is installed at the bottom of the rotary walking mechanism, the walking motor drives the rotary walking mechanism to make rotary motion on the track, thereby driving the planetary spiral mechanism to make rotary motion around the main central shaft, and the rotation is realized; the spiral mechanism self-rotating motor is connected to one end of the planetary spiral mechanism, and the other end is connected to the main central shaft through a T-shaped sleeve, the spiral mechanism self-rotating motor drives the planetary spiral mechanism to rotate, and the rotation is realized, thereby completely breaking the coal blocked and arched in the bottom of the coal silo.

Claims

1. A coal silo anti-jamming screw device, characterized in that, The utility model relates to a kind of rotary spiral mechanism, including main center axis (1), planetary spiral mechanism (4) and rotary walking mechanism (6), also including annular warehouse (11), main center axis (1) outside is equipped with T type sleeve (2), and center bearing is installed between main center axis (1) and T type sleeve (2), one end of planetary spiral mechanism (4) end is connected with spiral mechanism autorotation motor (8), and the other end is embedded in T type sleeve (2), and between T type sleeve (2) inner wall, ball bearing is installed, spiral mechanism autorotation motor (8) is fixed in rotary walking mechanism (6) top, rotary walking mechanism (6) is connected with walking motor (7), and rotary walking mechanism (6) bottom is installed with track (5); The planetary spiral mechanism (4) is composed of a rotating shaft and spiral blades, the spiral blades are welded and fixed on the side wall of the rotating shaft, the output shaft of the spiral mechanism autorotation motor (8) is connected with the rotating shaft through a shaft coupling, the main center axis (1) is vertically fixed in the center support warehouse (3), the side wall of the center support warehouse (3) is provided with an annular groove for allowing the end of the planetary spiral mechanism (4) to pass through, the bottom of the center support warehouse (3) is provided with a threaded hole, the top of the center support warehouse (3) is conical, the main center axis (1) is a two-step shaft, including a first step shaft at the top and a second step shaft at the bottom, the diameter of the second step shaft is larger than that of the first step shaft, the T type sleeve (2) is composed of a middle sleeve and side sleeves, the middle sleeve is sleeved on the first step shaft, the inner diameter of the middle sleeve is smaller than the diameter of the second step shaft, and the end of the planetary spiral mechanism (4) is embedded in the side sleeve;The spiral mechanism autorotation motor (8), the rotary walking mechanism (6), the walking motor (7) and the track (5) are all installed in the annular warehouse (11), the annular groove for allowing the end of the planetary spiral mechanism (4) to pass through is provided on the inner side wall of the annular warehouse (11), the side wall and the bottom of the annular warehouse (11) are provided with threaded holes respectively, and the top surface of the annular warehouse (11) is inclined to the main center axis (1).

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