CN212538833U - Air cooling device of kiln head screw conveyer - Google Patents
Air cooling device of kiln head screw conveyer Download PDFInfo
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- CN212538833U CN212538833U CN202021320232.2U CN202021320232U CN212538833U CN 212538833 U CN212538833 U CN 212538833U CN 202021320232 U CN202021320232 U CN 202021320232U CN 212538833 U CN212538833 U CN 212538833U
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Abstract
In order to solve present adoption water-cooling mode cooling screw conveyer, cause inside corrosion easily, lead to the unstable problem of screw conveyer operation, the present disclosure provides a kiln head screw conveyer air cooling device to improve the stability of screw conveyer operation. The invention discloses an air cooling device of a kiln head screw conveyor, which consists of a fan, an air supply pipe, a rotary joint, a hollow driving shaft, an air inlet inner pipe, an auger shaft pipe, hollow auger blades wound on the auger shaft pipe and a heat dissipation air disc, wherein the air supply pipe is arranged on the air inlet inner pipe; the fan, the blast pipe, the rotary joint, the hollow driving shaft and the air inlet inner pipe are sequentially connected, the air inlet inner pipe extends into the rear part of the auger shaft pipe, and a first air return hole is formed in the pipe wall of the front part of the auger shaft pipe; and a second air return hole and a third air return hole are formed in the pipe wall of the rear part of the auger shaft pipe. The utility model provides a kiln head screw conveyer air cooling device can improve the stability of screw conveyer operation.
Description
Technical Field
The utility model relates to a ventilation cooling field especially relates to a kiln head screw conveyer air cooling device.
Background
Because the front head end of the kiln head screw conveyor extends into the smelting kiln, the high-temperature radiation in the furnace can easily cause the burning loss of the head end of the auger and can also easily cause the thermal deformation to influence the operation of the screw conveyor, the traditional cooling mode adopts a water cooling mode, the internal corrosion is easily caused, and the operation stability of the screw conveyor is also influenced because the formed water vapor is difficult to treat; meanwhile, a cooling water tank and a circulating cooling device are required to be arranged in a water cooling mode, and the working space is occupied.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above-mentioned technical problem, this disclosure provides a kiln head screw conveyer air cooling device, improves the stability of screw conveyer operation.
The kiln head screw conveyor air cooling device comprises a fan, an air supply pipe, a rotary joint, a hollow driving shaft, an air inlet inner pipe and an auger shaft pipe with a sealed front end, wherein a check plate is arranged on the pipe wall of the front part of the air inlet inner pipe, and hollow auger blades are wound on the auger shaft pipe;
the fan, the blast pipe, the rotary joint, the hollow driving shaft and the air inlet inner pipe are sequentially connected to form an air inlet channel for cooling air output by the fan to flow to the auger shaft pipe;
the air inlet inner pipe extends into the rear part of the auger shaft pipe, and the air inlet inner pipe, the check plate and the auger shaft pipe are matched to form an annular air outlet channel for cooling air to flow from the hollow part of the hollow auger blade to the outside of the screw conveyer;
a first air return hole for communicating the interior of the auger shaft tube with the hollow part of the hollow auger blade is formed in the tube wall of the front part of the auger shaft tube;
and a second air return hole for communicating the hollow part of the hollow auger blade with the annular air outlet channel and a third air return hole for allowing cooling air in the annular air outlet channel to flow outside the screw conveyor are formed in the pipe wall of the rear part of the auger shaft tube.
Optionally, the air inlet inner pipe is connected with the hollow driving shaft in a threaded manner.
Optionally, the rear portion cover of auger central siphon is established on the front portion of cavity drive shaft, the cavity drive shaft the inner tube of admitting air the check plate with the cooperation of auger central siphon forms be used for supplying the cooling air to flow the annular air-out passageway outside the screw conveyer.
Optionally, the number of the second return air holes is greater than the number of the first return air holes, the number of the third return air holes is greater than the number of the second return air holes, and the first return air holes, the second return air holes, and the third return air holes are all the same in size.
Optionally, the number of the first return air holes is 6, the number of the second return air holes is 7, and the number of the third return air holes is 8.
Optionally, the first air return hole is formed at the joint of the pipe wall of the auger shaft pipe and the front part of the hollow auger piece, and the second air return hole is formed at the joint of the pipe wall of the auger shaft pipe and the rear part of the hollow auger piece; the third air return hole is formed outside the shell of the spiral conveyor.
Optionally, first return air hole, second return air hole and third return air hole constitute by a plurality of round holes, first return air hole with second return air hole is followed the helix of cavity auger blade arranges, the third return air hole winds auger central siphon pipe wall annular is arranged.
Optionally, the device further comprises a heat dissipation air disc sleeved on the pipe wall of the auger shaft pipe, the heat dissipation air disc is located outside the shell of the screw conveyor, the heat dissipation air disc is provided with a heat dissipation inner cavity and a plurality of air overflow holes, and the heat dissipation inner cavity is respectively communicated with the air overflow holes and the third air return holes.
Optionally, the front end of the auger shaft is provided with a heat-resistant sealing end cover.
Optionally, the blower is a roots blower.
The technical scheme of the present disclosure can be implemented to obtain the following beneficial technical effects: the cooling air can be discharged out of the conveyer after sequentially passing through the blast pipe, the rotary joint, the hollow driving shaft, the air inlet inner pipe, the auger shaft pipe, the first air return hole, the hollow auger piece, the second air return hole, the annular air outlet channel and the third air return hole, so that the cooling air can cool the auger shaft and the auger blade, the temperature of the auger shaft pipe and the auger blade is efficiently reduced, and the running stability of the screw conveyer is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a cross-sectional view of a kiln head screw conveyor air-cooling device in one embodiment of the present disclosure;
fig. 2 is a sectional view of a kiln head screw conveyor air-cooling device provided in a kiln wall according to an embodiment of the present disclosure;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a plan view of a kiln head screw conveyor air-cooling device disposed on a kiln wall according to an embodiment of the present disclosure;
description of the drawings:
1. a fan; 2. an air supply pipe; 3. a rotary joint; 4. a hollow drive shaft;
5. an air inlet inner pipe; 6. a check plate; 7. a packing auger shaft tube; 8. a first return vent;
9. a hollow auger piece; 10. a second return air hole; 11. an annular air outlet channel;
12. a third return air hole; 13. a heat dissipation air plate; 14. heat-resistant end caps;
15. a blanking hopper; 16. a gear reducer; 17. a housing; 100. a kiln wall.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 4, the air cooling device of the kiln head screw conveyor comprises a fan 1, an air supply pipe 2, a rotary joint 3, a hollow driving shaft 4, an air inlet inner pipe 5 and a packing auger shaft pipe 7 with a sealed front end, wherein a check plate 6 is arranged on the front pipe wall of the air inlet inner pipe 5, and hollow packing auger blades 9 are wound on the packing auger shaft pipe 7;
a first air return hole 8 for communicating the interior of the auger shaft tube 7 with the hollow part of the hollow auger blade 9 is formed in the tube wall of the front part of the auger shaft tube 7;
the fan 1, the blast pipe 2, the rotary joint 3, the hollow driving shaft 4 and the air inlet inner pipe 5 are sequentially connected to form an air inlet channel for cooling air output by the fan 1 to flow to the auger shaft pipe 7;
the air inlet inner pipe 5 extends into the rear part of the auger shaft tube 7, and the air inlet inner pipe 5, the check plate 6 and the auger shaft tube 7 are matched to form an annular air outlet channel 11 for cooling air to flow from the hollow part of the hollow auger blade 9 to the outside of the screw conveyer;
the pipe wall at the rear part of the auger shaft pipe 7 is provided with a second air return hole 10 for communicating the hollow part of the hollow auger blade 9 with the annular air outlet channel 11 and a third air return hole 12 for supplying cooling air in the annular air outlet channel 11 to flow out of the screw conveyer.
It can be known that the second return air hole 10 is an inlet of the annular outlet channel, and the third return air hole 12 is an outlet of the annular outlet channel. The check plate 6 is used for preventing hot air entering the annular air outlet channel 11 from flowing back to the auger shaft tube 7 so as to prevent the cooling effect from being influenced by hot air short-circuit repeated circulation, and as can be known, the check plate 6 is positioned on the front side of the second air return hole, and the check plate 6 is annular.
In the kiln head screw conveyer air cooling device of the embodiment, cooling air output by the fan 1 is discharged out of the screw conveyer after passing through the blast pipe 2, the rotary joint 3, the hollow driving shaft 4, the air inlet inner pipe 5, the auger shaft pipe 7, the first air return hole 8, the hollow part of the hollow auger blade 9, the second air return hole 10 and the annular air outlet channel 11, so that the cooling air can cool the auger shaft pipe 7 and the hollow auger blade 9, the temperatures of the auger shaft pipe 7 and the hollow auger blade 9 are efficiently reduced, thermal deformation is prevented, and the stability of the screw conveyer is improved.
In the embodiment, the first air return hole 8 and the second air return hole 10 on the pipe wall of the auger shaft pipe 7 are connected with the internal air channel of the hollow auger blade 9 in a seamless mode, so that the cooling circuit is smooth, and the internal air channel is an air channel formed in the hollow part of the hollow auger blade 9.
Referring to fig. 2 to 4, taking the operation of the kiln head screw conveyor in the kiln as an example, since the front end of the kiln head screw conveyor passes through the kiln wall 100 and extends into the smelting kiln, the high temperature radiation in the kiln is easy to cause the front part of the packing auger (including the packing auger shaft tube and the hollow packing auger blade) to be burnt and damaged, and the screw conveyor is easy to be deformed by heat to affect the operation of the screw conveyor; in this embodiment, the fan 1 is used to send cooling air to the front part of the auger contacting high temperature radiation through the auger shaft tube 7, and the cooling air flows back through the first air return hole 8, passes through the hollow part of the hollow auger blade 9 and the second air return hole 10, and is finally discharged out of the kiln through the third air return hole 12 at the rear part of the hollow auger blade 9.
In one embodiment, referring to fig. 1, the intake inner tube 5 is threaded with a hollow drive shaft 4;
the air inlet inner pipe 5 is connected with the hollow driving shaft 4 by screw threads, so that the air inlet inner pipe 5 can be conveniently detached.
In one embodiment, referring to fig. 1 to 3, the rear portion of the auger shaft tube 7 is sleeved on the front portion of the hollow driving shaft 4, and the hollow driving shaft 4, the auger shaft tube 7, the air inlet inner tube 5 and the check plate 6 cooperate to form the annular air outlet channel 11 for the cooling air to flow out of the screw conveyor. The inlet of the annular air outlet channel 11 is a second return hole 10, and the outlet is a third return hole 12.
In one embodiment, the number of the second return air holes is greater than that of the first return air holes, the number of the third return air holes is greater than that of the second return air holes, and the first return air holes, the second return air holes and the third return air holes are all the same in size.
Specifically, the third air return holes can be circumferentially and uniformly distributed.
Specifically, the first return air hole can be opened more than 6 along the helix 20mm diameter holes, the second return air hole can be opened more than 7 along the helix 20mm diameter holes, the third return air hole can be arranged more than 8 around the auger shaft pipe wall ring, more specifically, the first return air hole can be 6, the second return air hole can be 7, and the third return air hole can be 8.
In one embodiment, referring to fig. 4, the first air return hole 8 is arranged at the joint of the pipe wall of the auger shaft tube 7 and the front part of the hollow auger piece, and the second air return hole 10 is arranged at the joint of the pipe wall of the auger shaft tube 7 and the rear part of the hollow auger piece; the third return air hole 12 is provided outside the casing 17 of the screw conveyor.
In one embodiment, referring to fig. 4, the first return air hole 8, the second return air hole 10 and the third return air hole 12 are each formed by a plurality of circular holes, the first return air hole 8 and the second return air hole 10 are arranged along a spiral line of the hollow auger blade 9, and the third return air hole 12 is annularly arranged around the wall of the auger shaft tube 7.
In one embodiment, referring to fig. 3, the device further comprises a heat dissipation air plate sleeved on the pipe wall of the auger shaft pipe 7, the heat dissipation air plate is positioned outside the shell of the screw conveyor, the heat dissipation air plate is provided with a heat dissipation inner cavity and a plurality of air overflow holes, and the heat dissipation inner cavity is respectively communicated with the air overflow holes and the third air return holes 12.
In this embodiment, the heated cooling air flows through the hollow auger blade 9, the second air return hole 10, the annular air outlet channel 11, the third air return hole 12 and the heat dissipation air plate in sequence and then overflows out of the screw conveyor. The heat dissipation air plate is provided with a heat dissipation inner cavity and a plurality of air overflow holes, and the heat dissipation inner cavity and the air overflow holes rectify cooling air and evenly discharge the cooling air at low speed, so that the influence of concentrated discharge on the surrounding environment is avoided. As can be appreciated, the air overflow holes are holes that overflow cooling air; the cross-sectional area of the air overflow holes is smaller than that of the third air outlet holes, the number of the air overflow holes is larger than that of the third air return holes 12, specifically, the number of the air overflow holes can be more than five times that of the third air return holes 12, and more specifically, the number of the air overflow holes can be one hundred.
In one embodiment, referring to fig. 3, the auger shaft is provided with a heat resistant seal end cap at the forward end. Taking the kiln head screw conveyer as an example, the head end of the auger shaft of the kiln head screw conveyer extends into the smelting kiln, the burning loss of the head end of the auger shaft tube 7 is easily caused by high-temperature radiation in the furnace, and the adoption of the heat-resistant sealing end cover can prevent cooling air from entering the smelting kiln on one hand and can prevent the heat-resistant sealing end cover from being burnt by the high-temperature radiation of the smelting kiln on the other hand.
In one embodiment, referring to fig. 3, the cooling blower 1 may employ a roots blower 1, or other high pressure blower 1, in consideration of the pressure loss of the cooling process.
In the embodiment, the cooling air output by the fan 1 enters the auger shaft tube 7 through the blast pipe 2, the rotary joint 3, the hollow part of the hollow driving shaft 4 and the air inlet inner tube 5; the hollow driving shaft 4 can be used as a component for driving the auger shaft tube 7 to rotate and can also be used as an air duct for cooling air, so that the spiral conveyor with the air cooling device has a more compact structure, the occupied space is reduced, and the cost is also reduced; as can be known, the components for controlling the rotation of the screw conveyor further include a speed reducer and the like.
In one embodiment, referring to fig. 1 to 4, during smelting in a kiln, raw materials enter a screw conveyor from a top blanking hopper, a gear reducer drives a hollow driving shaft 4 to be connected with the screw conveyor to rotate through a chain gear, and the raw materials are continuously input into the smelting kiln; the fan 1 makes cooling air enter the hollow driving shaft 4 through the rotary joint 3, then enters the hollow auger shaft tube 7 through the air inlet inner tube 5, when the cooling air reaches the front end part of the kiln head of the auger shaft tube 7, the cooling air passes through 6 first air return holes 8 arranged on the tube wall of the auger shaft tube 7 and formed along a spiral line to enter the hollow auger blade 9, the cooling air bypasses to the rear end of the hollow auger blade 9 in the front end of the hollow auger blade 9, then returns to the auger shaft tube 7 again through 7 second air return holes 10 formed in the rear end of the auger shaft tube 7, then flows out of the conveyor through an annular air outlet channel 11 formed by the auger shaft tube 7 and the air inlet inner tube 5, and overflows through a heat dissipation air plate to finish the whole flow of the cooling air.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. The kiln head screw conveyor air cooling device is characterized by comprising a fan, an air supply pipe, a rotary joint, a hollow driving shaft, an air inlet inner pipe and an auger shaft pipe with a sealed front end, wherein a check plate is arranged on the pipe wall of the front part of the air inlet inner pipe, and hollow auger blades are wound on the auger shaft pipe;
the fan, the blast pipe, the rotary joint, the hollow driving shaft and the air inlet inner pipe are sequentially connected to form an air inlet channel for cooling air output by the fan to flow to the auger shaft pipe;
the air inlet inner pipe extends into the rear part of the auger shaft pipe, and the air inlet inner pipe, the check plate and the auger shaft pipe are matched to form an annular air outlet channel for cooling air to flow from the hollow part of the hollow auger blade to the outside of the screw conveyer;
a first air return hole for communicating the interior of the auger shaft tube with the hollow part of the hollow auger blade is formed in the tube wall of the front part of the auger shaft tube;
and a second air return hole for communicating the hollow part of the hollow auger blade with the annular air outlet channel and a third air return hole for allowing cooling air in the annular air outlet channel to flow outside the screw conveyor are formed in the pipe wall of the rear part of the auger shaft tube.
2. The kiln head screw conveyor air cooling device of claim 1, wherein the air inlet inner pipe is screwed with the hollow driving shaft.
3. The kiln head screw conveyor air cooling device of claim 1, wherein the auger shaft tube is sleeved at the rear part thereof on the front part of the hollow driving shaft, and the hollow driving shaft, the air inlet inner tube, the check plate and the auger shaft tube are matched to form an annular air outlet channel for cooling air to flow out of the screw conveyor.
4. The kiln head screw conveyor air cooling device of claim 1, wherein the number of the second return air holes is more than that of the first return air holes, the number of the third return air holes is more than that of the second return air holes, and the first return air holes, the second return air holes and the third return air holes are all the same in size.
5. The kiln head screw conveyor air cooling device of claim 4, wherein the number of the first return air holes is 6, the number of the second return air holes is 7, and the number of the third return air holes is 8.
6. The kiln head spiral conveyor air cooling device of claim 1, wherein the first air return hole is formed at the joint of the tube wall of the auger shaft tube and the front part of the hollow auger piece, and the second air return hole is formed at the joint of the tube wall of the auger shaft tube and the rear part of the hollow auger piece; the third air return hole is formed outside the shell of the spiral conveyor.
7. The kiln head screw conveyor air cooling device according to claim 1, wherein the first return air hole, the second return air hole and the third return air hole are all composed of a plurality of round holes, the first return air hole and the second return air hole are arranged along a spiral line of the hollow auger shaft tube, and the third return air hole is annularly arranged around the tube wall of the auger shaft tube.
8. The kiln head screw conveyor air cooling device according to claim 1, further comprising a heat dissipation air plate sleeved on the pipe wall of the auger shaft pipe, wherein the heat dissipation air plate is positioned outside the shell of the screw conveyor, the heat dissipation air plate is provided with a heat dissipation inner cavity and a plurality of air overflow holes, and the heat dissipation inner cavity is respectively communicated with the air overflow holes and the third air return holes.
9. The kiln head screw conveyor air cooling device of claim 1, wherein a heat-resistant sealing end cover is arranged at the front end of the auger shaft.
10. The kiln head screw conveyor air cooling device as claimed in claim 1, wherein the blower is a roots blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320232.2U CN212538833U (en) | 2020-07-07 | 2020-07-07 | Air cooling device of kiln head screw conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320232.2U CN212538833U (en) | 2020-07-07 | 2020-07-07 | Air cooling device of kiln head screw conveyer |
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| CN212538833U true CN212538833U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021320232.2U Active CN212538833U (en) | 2020-07-07 | 2020-07-07 | Air cooling device of kiln head screw conveyer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637751A (en) * | 2020-07-07 | 2020-09-08 | 大连村松慧邦环境设备有限公司 | Air cooling device of kiln head screw conveyer |
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2020
- 2020-07-07 CN CN202021320232.2U patent/CN212538833U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637751A (en) * | 2020-07-07 | 2020-09-08 | 大连村松慧邦环境设备有限公司 | Air cooling device of kiln head screw conveyer |
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