CN216661444U - External internal guide wheel of air-sealed slag conveyor - Google Patents

Abstract

The application provides an external inner guide wheel of an air seal type slag conveyor, which comprises a wheel body, a guide wheel shaft and an air seal assembly; one end of the guide wheel shaft is sleeved in the wheel body along the axis direction of the wheel body and is fixed through a flat key, a guide wheel seat is sleeved outside the other end of the guide wheel shaft, at least two bearings are arranged in the guide wheel seat, and the axes of the wheel body, the guide wheel shaft and the guide wheel seat are overlapped; an inner end cover is arranged at one end of the guide wheel seat close to the wheel body, and an end cover sealing ring is sleeved at the contact part of one end of the inner end cover close to the wheel body and the guide wheel shaft; the gas seal assembly comprises a gas storage tank, a vent pipeline and a gas collection cavity, the gas collection cavity is arranged inside the inner end cover along the circumference of the guide wheel shaft, the gas storage tank is arranged outside the guide wheel seat, and the gas collection cavity is communicated with the gas storage tank, which stores high-pressure gas, inside through the vent pipeline. This application can be in order to release grey water in the time of end cover sealing washer is unusual continuously let in compressed air, realizes the good effect of casing leakproofness.

Description

External internal guide wheel of air-sealed slag conveyor

Technical Field

The application relates to the technical field of slag conveyors, in particular to an external inner guide wheel of an air seal type slag conveyor.

Background

The scraper slag conveyor is mainly used for separating solid matters meeting certain granularity from a mixture of liquid and solid, and is continuous and efficient mechanical slag removing equipment. Such as: boiler deslagging systems, river dredging systems, and the like. The slag removing process of the scraper slag conveyor is that a chain drives a scraper to convey solid matters in a container out of the container, wherein an inner guide wheel mainly plays a role in tensioning and guiding an annular chain and is one of main key components of the scraper slag conveyor. Because of the harsh environment and the special position of the inner guide wheel, whether the running condition of the inner guide wheel normally and directly influences the normal operation of the slag conveyor.

The guide pulley includes wheel body and guide pulley axle in the current scraper blade drags for the sediment machine, the epaxial bearing that has cup jointed of guide pulley is and be provided with the casing outside the guide pulley axle, inside for preventing that grey water from getting into interior guide pulley, often set up seal structure respectively in casing department and bearing department, current casing is sealed to adopt grease seal more, inject lubricating grease in casing seal structure promptly, when long-term use back casing seal structure is damaged, lubricating grease flows, the casing is sealed inefficacy, grey water gets into bearing cavity department erosion bearing easily, and then lead to the bearing card to die so that the unable normal operating of wheel body, there is the poor problem of sealed effect in the guide pulley in the oil blanket formula scraper blade drags for the sediment machine.

SUMMERY OF THE UTILITY MODEL

The application provides an external inner guide wheel of air seal formula dragveyer for there is the poor problem of sealed effect in the inner guide wheel of solving oil seal formula scraper blade dragveyer.

The application provides an external inner guide wheel of an air seal type slag conveyor, which comprises a wheel body, a guide wheel shaft and an air seal assembly; one end of the guide wheel shaft is sleeved in the wheel body along the axis direction of the wheel body and is fixed through a flat key, a guide wheel seat is sleeved outside the other end of the guide wheel shaft, at least two bearings are arranged in the guide wheel seat, and the axes of the wheel body, the guide wheel shaft and the guide wheel seat are overlapped;

an inner end cover is arranged at one end of the guide wheel seat close to the wheel body, and an end cover sealing ring is sleeved at the contact part of one end of the inner end cover close to the wheel body and the guide wheel shaft;

the gas seal assembly comprises a gas storage tank, a vent pipeline and a gas collection cavity, the gas collection cavity is arranged inside the inner end cover along the circumference of the guide wheel shaft, the gas storage tank is arranged outside the guide wheel seat, and the gas collection cavity is communicated with the gas storage tank, which stores high-pressure gas, inside through the vent pipeline.

In an embodiment of the application, the external inner guide wheel of the air seal type slag conveyor further comprises a water leakage display component, the water leakage display component is located on one side, away from the wheel body, of the gas collection cavity, and the water leakage display component is used for displaying the effective condition of the air seal component.

In one embodiment of the present application, the water leakage display assembly includes a water collection cavity and a diversion outlet pipe;

the water collecting cavity is arranged in the inner end cover along the circumference of the guide wheel shaft and is used for collecting grey water after the air seal assembly fails;

the guide eduction tube is connected with the water collecting cavity and extends to the outside of the guide wheel seat, and the guide eduction tube is used for guiding the grey water in the water collecting cavity out of the guide wheel seat.

In an embodiment of the present application, the at least two bearings include a first bearing and a second bearing, the first bearing and the second bearing are disposed inside the idler seat along a circumference of the idler shaft, and the first bearing is disposed on the idler shaft adjacent to the wheel body.

In an embodiment of the application, a lubricating oil cavity is arranged between the first bearing and the second bearing, and one end of the lubricating oil cavity extends to the outside of the guide wheel seat and is connected with an oil cup.

In an embodiment of the present application, a shaft seal ring is sleeved at a contact position of one end of the first bearing close to the wheel body and the guide wheel shaft.

In an embodiment of the application, an outer end cover is installed at one end, away from the wheel body, of the guide wheel seat, the outer end cover is connected with the guide wheel seat through a first bolt in the axial direction of the guide wheel shaft, the inner end cover is connected with the guide wheel seat through a second bolt in the axial direction of the guide wheel shaft, and the guide wheel seat is fixedly connected with the slag conveyor shell.

In an embodiment of the present application, an end of the guide wheel shaft away from the wheel body extends to the outside of the outer end cap, and a cross section of the guide wheel shaft outside the outer end cap is a regular polygon.

The application provides an external interior guide pulley of atmoseal formula dragveyer establishes in the wheel body and is fixed through the parallel key along wheel body axis direction cover through the one end of guide pulley axle, and the wheel body rotates and drives the guide pulley axle through the parallel key and carry out synchronous rotation, realizes the visualization of wheel body running state. According to the application, an end cover sealing ring is sleeved at the contact part of one end of the inner end cover, which is close to the wheel body, and the guide wheel shaft, and can prevent ash water from entering the inner end cover; the air seal assembly is arranged and comprises an air storage tank, an air pipeline and an air collection cavity, compressed air in the air storage tank is guided into the air collection cavity through the air pipeline, when the guide wheel shaft rotates, the guide wheel shaft rotates relative to the guide wheel seat and the inner end cover, when the end cover sealing ring is abnormal, high-pressure air continuously introduced into the air seal assembly moves to the outer side of the inner end cover with low pressure, and therefore grey water is further prevented from entering the inner end cover and the guide wheel seat, and a sealing effect is achieved. Compare in current oil blanket formula drags for sediment built-in guide pulley, in case the casing seal structure is damaged, lubricating grease flows out, and the casing is sealed to become invalid promptly, and the external interior guide pulley of air blanket formula drags for sediment machine that this application provided can be when the end cover sealing washer is unusual, and the air blanket subassembly continuously lets in compressed air in order to push out the grey water, realizes the good effect of casing sealing performance.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic axial sectional view of an external inner guide wheel of an air seal type slag conveyor according to an embodiment of the present application;

fig. 2 is an installation schematic view of an external inner guide wheel of an air seal type slag conveyor according to an embodiment of the present application;

fig. 3 is a schematic side view of a idler shaft according to an embodiment of the present disclosure.

Description of reference numerals: 1. a wheel body; 2. a guide wheel shaft; 21. a flat bond; 3. a guide wheel seat; 31. an inner end cap; 311. an end cap seal ring; 32. an outer end cover; 4. a gas seal assembly; 41. a gas storage tank; 42. an air duct; 43. a gas collection cavity; 5. a water leakage display assembly; 51. a water collection cavity; 52. a diversion outlet pipe; 6. a first bearing; 61. a shaft seal ring; 7. a second bearing; 8. a lubricating oil cavity; 81. an oil cup; 9. a slag remover shell; 91. a first mounting seat; 92. a second mounting seat; 93. a first bolt; 94. a second bolt; 95. a third bolt; 96. a chain; 97. a scraper.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms referred to in this application are explained first:

air sealing: the pneumatic seal is a sealing device which seals a gap of a rotating shaft by using compressed air and prevents a working medium from leaking. The pneumatic seal is not limited by speed and temperature, is usually used for sealing rotary mechanical equipment with low pressure difference, is used for sealing liquid media, and can also be used for sealing gas media, such as for preventing lubricating oil in a bearing chamber from leaking.

Flat bond: the key is characterized in that two side surfaces are used as working surfaces, and the torque is transmitted by pressing the key and the side surface of the key groove.

An embodiment of the application provides an external inner guide wheel of atmoseal formula dragveyer, as shown in fig. 1 and fig. 2, including wheel body 1, guide pulley axle 2 and atmoseal subassembly 4, the one end of guide pulley axle 2 is established in wheel body 1 and is fixed through flat key 21 along wheel body 1 axis direction cover, wheel body 1 rotates and drives guide pulley axle 2 through flat key 21 and carry out synchronous rotation, wheel body 1 is made by the alloy that the wearability is strong, wheel body 1 is used for driving chain 96 and rotates and then drive scraper blade 97 in the dragveyer casing 9 and rotate. The other end outside cover of leading wheel axle 2 is equipped with guide wheel seat 3, and guide wheel seat 3 is inside to be provided with two at least bearings, and guide wheel seat 3 is used for fixing with the slag extractor casing, and the bearing is used for supporting pivoted leading wheel axle 2 and reduces the coefficient of friction who rotates the in-process. The axes of the wheel body 1, the guide wheel shaft 2 and the guide wheel seat 3 are coincident.

One end of the guide wheel seat 3 close to the wheel body 1 is provided with an inner end cap 31, and the inner end cap 31 is used for being compressed in the axial direction and fixed with the guide wheel seat 3. An end cover sealing ring 311 is sleeved at a contact position of one end of the inner end cover 31 close to the wheel body 1 and the guide wheel shaft 2, specifically, the end cover sealing ring 311 can adopt a rotating skeleton oil seal, and the end cover sealing ring 311 is used for filling a mounting gap between the inner end cover 31 and the outer diameter of the guide wheel shaft 2 and preventing grey water in the slag fishing machine from entering the inner end cover 31.

The air seal assembly 4 is used for sealing the inner end cover 31 when the end cover sealing ring 311 is abnormal, and the two sealing modes of the end cover sealing ring 311 and the air seal assembly 4 are combined to form the sealing of the inner end cover 31, which is also called as shell sealing. Specifically, the gas seal assembly 4 includes a gas storage tank 41, an air duct 42 and a gas collection chamber 43, the gas collection chamber 43 is arranged inside the inner end cover 31 along the circumference of the guide wheel shaft 2, the gas storage tank 41 is arranged outside the guide wheel seat 3, and the gas collection chamber 43 is communicated with the gas storage tank 41 storing high-pressure gas therein through the air duct 42. The pressure of the high-pressure gas in the gas seal assembly 4 is 0.5 MPa. The high-pressure gas generated by the gas source, which may be an air compressor to continuously and stably output 0.5MPa of compressed air, is stored in the gas tank 41. The pressure in the dragveyer water tank is about 0.1-0.2MPa, and the 0.5MPa compressed air can smoothly and effectively push out the grey water entering the inner end cover 31 from the dragveyer water tank. Specifically, high-pressure gas generated by a gas source is stored in a gas storage tank 41, when the slag conveyor works, the high-pressure gas in the gas storage tank 41 continuously enters a gas collection cavity 43 in the inner end cover 31 through a vent pipe 42, when an end cover sealing ring 311 is abnormal, for example, when the guide wheel shaft 2 jumps during rotation, a gap occurs between the end cover sealing ring 311 and the guide wheel shaft 2, and the high-pressure gas in the gas collection cavity 43 moves to the outer side of the low-pressure inner end cover 31 due to pressure difference, so that grey water is prevented from entering the inner end cover 31 and the guide wheel seat 3.

The application provides an external interior guide pulley of atmoseal formula dragveyer, the one end through guide pulley axle 2 is established in wheel body 1 and is fixed through flat key 21 along 1 axis direction cover of wheel body, and wheel body 1 rotates and drives guide pulley axle 2 through flat key 21 and carry out synchronous rotation, realizes the visualization of wheel body 1 running state. According to the application, an end cover sealing ring 311 is sleeved at the contact part of one end of the inner end cover 31 close to the wheel body 1 and the guide wheel shaft 2, and the end cover sealing ring 311 can prevent grey water from entering the inner end cover 31; this application is through being provided with air seal subassembly 4, air seal subassembly 4 includes gas holder 41, vent pipe 42 and air collecting chamber 43, compressed air in the gas holder 41 passes through the leading-in air collecting chamber 43 of vent pipe 42, when guide wheel axle 2 is rotatory, guide wheel axle 2 and guide wheel seat 3 and interior end cap 31 rotate relatively, when end cover sealing washer 311 is unusual, the high-pressure gas that lasts the business turn over in the air seal subassembly 4 removes to the interior end cap 31 outside of low pressure, further prevent grey water entering in interior end cap 31 and the guide wheel seat 3, play sealed effect. Compare in current oil blanket formula drags for sediment built-in guide pulley, in case the casing seal structure is damaged, lubricating grease flows out, and the casing is sealed to become invalid promptly, and the external interior guide pulley of air blanket formula drags for sediment machine that this application provided can be when end cover sealing washer 311 is unusual, and air seal subassembly 4 continuously lets in compressed air and realizes the sealed effect of casing with the grey water of pushing out. In addition, the shell is sealed without using grease or sealing water and the like, so that the use cost is reduced; the compressed air is cleaner, and the blockage of the passage can be avoided; the air supply pressure of the compressed air is stable and easy to control; the application is also easy to maintain, for example when the shell seal needs to be checked, without the need of guiding out grease or sealing water, and the compressed air can be automatically discharged by opening the valve.

In some embodiments, as shown in fig. 1, the external inner guide wheel of the air seal type slag conveyor further includes a water leakage display component 5, the water leakage display component 5 is located at a side of the gas collecting cavity 43 away from the wheel body 1, the water leakage display component 5 is used for displaying effective conditions of the air seal component 4, and when the air seal component 4 works normally, no grey water flows out from a water outlet end of the water leakage display component 5; when the air seal assembly 4 fails, the water outlet end of the water leakage display assembly 5 flows out of grey water in the shell of the slag conveyor.

In some embodiments, as shown in fig. 1, the water leak display assembly 5 includes a water collection chamber 51 and a flow guide outlet 52.

A water collection chamber 51 is provided inside the inner end cap 31 along the circumference of the idler shaft 2, the water collection chamber 51 being closer to the first bearing 6 than the gas collection chamber 43, the water collection chamber 51 being used to collect grey water after failure of the gas seal assembly 4.

The diversion eduction tube 52 is connected with the water collection cavity 51 and extends to the outside of the guide wheel seat 3, and the diversion eduction tube 52 is used for guiding the grey water in the water collection cavity 51 out of the guide wheel seat 3. If the air seal assembly 4 fails after the slag conveyor runs for a period of time, the ash water flows out of the guide wheel after sequentially passing through the gas collecting cavity 43, the water collecting cavity 51 and the flow guide eduction tube 52, and at the moment, a worker needs to maintain the ash water. The method and the device for judging the sealing effectiveness of the shell realize visual judgment of the sealing effectiveness of the shell in a low-cost mode.

In some embodiments, as shown in fig. 1, the at least two bearings include a first bearing 6 and a second bearing 7, the first bearing 6 and the second bearing 7 are disposed inside the idler seat 3 along the circumference of the idler shaft 2, and the first bearing 6 is disposed on the idler shaft 2 adjacent to the wheel body 1. Compared with the design of only the first bearing 6, the double-bearing design can reduce the force borne by each bearing, enhance the stability of the rotation of the guide wheel shaft 2, further reduce the failure rate of the inner guide wheel and prolong the service life of the inner guide wheel.

In some embodiments, as shown in fig. 1, a lubricating oil chamber 8 is provided between the first bearing 6 and the second bearing 7, and the lubricating oil chamber 8 is provided between the first bearing 6 and the second bearing 7, so that the two bearings can be lubricated at the same time. One end of the lubricating oil cavity 8 extends to the outside of the guide wheel seat 3 and is connected with an oil cup 81, sealing filler is fed into the lubricating oil cavity 8 through the oil cup 81, the sealing filler can be grease, the gap between the lubricating oil cavity 8 and the guide wheel shaft 2 is filled with the grease, and the sealing performance can be improved. The provision of the oil cup 81 as an oil filler outside the stator makes the operation safer.

In some embodiments, as shown in fig. 1, a shaft seal 61 is sleeved on the first bearing 6 near the contact between one end of the wheel body 1 and the guide wheel shaft 2. When the internal structure of the inner end cap 31 is damaged and leaks water, the shaft sealing ring 61 is used for preventing the grey water of the inner end cap 31 from entering the bearing, and the arrangement of the shaft sealing ring 61 can further protect the bearing from being corroded by the grey water.

In some embodiments, as shown in fig. 2, an outer end cap 32 is mounted at an end of the guide wheel seat 3 away from the wheel body 1, the outer end cap 32 is connected with the guide wheel seat 3 by a first bolt 93 along the axial direction of the guide wheel shaft 2, the inner end cap 31 is connected with the guide wheel seat 3 by a second bolt 94 along the axial direction of the guide wheel shaft 2, and the inner end cap 31 and the outer end cap 32 are fixed by bolts at two ends of the guide wheel seat 3, which is beneficial for positioning when the guide wheel shaft 2 is mounted and also convenient for disassembly and maintenance.

The guide wheel seat 3 and the dragveyer shell 9 are fixedly connected, in actual production, a first mounting seat 91 is welded on the circumference of the outer side of the guide wheel seat 3, a second mounting seat 92 is welded on the dragveyer shell 9, and the first mounting seat 91 and the second mounting seat 92 are fixedly connected at the same position through a third bolt 95. In addition, the external inner guide wheel is fixed outside the slag dragging machine shell, the inner guide wheel does not need shaft sealing water, and the slag dragging machine can be easily overhauled outside the slag dragging machine in case of failure without an operator entering a slag pool for special operation.

The outer end cover 32 indirectly realizes the relative fixation with the slag conveyor shell through the guide wheel seat 3, and the rotation of the wheel body 1 can be indirectly judged from the outer side of the outer end cover 32 by observing the rotation of the end part of the guide wheel shaft 2, so that the visualization of the running state of the wheel body 1 is realized.

In some embodiments, as shown in fig. 3, one end of the idler shaft 2 away from the wheel body 1 extends out of the outer end cover 32, and the section of the idler shaft 2 outside the outer end cover 32 is a regular polygon. In fig. 3, a square is taken as an example, and a regular triangle and the like can be taken as an example, and the rotation of the idler shaft 2 can be clearly shown by the section of the end part of the polygonal idler shaft 2.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (8)

1. An external inner guide wheel of an air seal type slag conveyor is characterized by comprising a wheel body (1), a guide wheel shaft (2) and an air seal assembly (4); one end of the guide wheel shaft (2) is sleeved in the wheel body (1) along the axis direction of the wheel body (1) and is fixed through a flat key (21), a guide wheel seat (3) is sleeved on the outer side of the other end of the guide wheel shaft (2), at least two bearings are arranged in the guide wheel seat (3), and the axes of the wheel body (1), the guide wheel shaft (2) and the guide wheel seat (3) are overlapped;

an inner end cover (31) is mounted at one end, close to the wheel body (1), of the guide wheel seat (3), and an end cover sealing ring (311) is sleeved at the contact position of one end, close to the wheel body (1), of the inner end cover (31) and the guide wheel shaft (2);

the gas seal assembly (4) comprises a gas storage tank (41), a ventilation pipeline (42) and a gas collection cavity (43), the gas collection cavity (43) is arranged inside the inner end cover (31) along the circumference of the guide wheel shaft (2), the gas storage tank (41) is arranged outside the guide wheel seat (3), and the gas collection cavity (43) is communicated with the gas storage tank (41) which stores high-pressure gas inside through the ventilation pipeline (42).

2. The external inner guide wheel of the air seal type slag conveyor according to claim 1, further comprising a water leakage display component (5), wherein the water leakage display component (5) is positioned on one side of the gas collection cavity (43) far away from the wheel body (1), and the water leakage display component (5) is used for displaying the effective condition of the air seal component (4).

3. The external inner guide wheel of the air seal type slag conveyor as claimed in claim 2, wherein the water leakage display assembly (5) comprises a water collection cavity (51) and a flow guide outlet pipe (52);

the water collecting cavity (51) is arranged inside the inner end cover (31) along the circumference of the guide wheel shaft (2), and the water collecting cavity (51) is used for collecting grey water after the air seal assembly (4) fails;

the flow guide eduction tube (52) is connected with the water collection cavity (51) and extends to the outside of the guide wheel seat (3), and the flow guide eduction tube (52) is used for guiding grey water in the water collection cavity (51) out of the guide wheel seat (3).

4. The external inner guide pulley for an air-seal dragger according to claim 1, characterized in that the at least two bearings comprise a first bearing (6) and a second bearing (7), the first bearing (6) and the second bearing (7) being arranged inside the guide pulley seat (3) along the circumference of the guide pulley shaft (2), the first bearing (6) being arranged on the guide pulley shaft (2) close to the pulley body (1).

5. The air seal type dragveyer external inner guide wheel according to claim 4, characterized in that a lubricating oil chamber (8) is arranged between the first bearing (6) and the second bearing (7), and one end of the lubricating oil chamber (8) extends to the outside of the guide wheel seat (3) and is connected with an oil cup (81).

6. The air seal type slag conveyor external inner guide wheel as claimed in claim 4, wherein a shaft sealing ring (61) is sleeved at the contact part of one end of the first bearing (6) close to the wheel body (1) and the guide wheel shaft (2).

7. The air seal type slag conveyor external inner guide wheel according to any one of claims 1 to 6, wherein an outer end cover (32) is installed at one end of the guide wheel seat (3) far away from the wheel body (1), the outer end cover (32) is connected with the guide wheel seat (3) through a first bolt (93) along the axial direction of the guide wheel shaft (2), the inner end cover (31) is connected with the guide wheel seat (3) through a second bolt (94) along the axial direction of the guide wheel shaft (2), and the guide wheel seat (3) is fixedly connected with the slag conveyor shell (9).

8. The external inner guide wheel of the air seal type slag conveyor according to claim 7, wherein one end of the guide wheel shaft (2) far away from the wheel body (1) extends out of the outer end cover (32), and the section of the guide wheel shaft (2) outside the outer end cover (32) is a regular polygon.

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