CN217383685U - Sand-to-sand reverse-spiral large heat exchange equipment - Google Patents
Sand-to-sand reverse-spiral large heat exchange equipment Download PDFInfo
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- CN217383685U CN217383685U CN202220430724.XU CN202220430724U CN217383685U CN 217383685 U CN217383685 U CN 217383685U CN 202220430724 U CN202220430724 U CN 202220430724U CN 217383685 U CN217383685 U CN 217383685U
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Abstract
The utility model discloses a sand-to-sand reverse-spiral large-scale heat exchange device, which belongs to the technical field of material regeneration, and comprises a frame and a heat exchange cylinder, wherein the heat exchange cylinder comprises an outer cylinder fixedly connected with the frame, the outer wall of the outer cylinder is hinged with an overhaul window, the inner part of the outer cylinder is sleeved with an inner cylinder, and the inner cylinder and the outer cylinder are coaxially arranged; the outer wall of the inner cylinder is fixedly connected with an outer helical blade, the inner wall of the inner cylinder is provided with an inner helical blade, the outer helical blade and the inner helical blade are of a reverse helical structure, and the heat exchange cylinder is provided with a driving assembly for driving the inner cylinder to rotate; the lower part of the outer cylinder is provided with a feeding end for wet sand to enter, and the upper part of the outer cylinder is provided with a discharging end; the upper end of the inner cylinder is provided with a feed inlet for heat supply sand to enter, and the lower end of the inner cylinder is provided with a discharge outlet. This large-scale indirect heating equipment of anti-spiral has utilized the high temperature waste heat of hot sand to carry out the heat exchange with the wet sand, when carrying out rapid cooling to hot sand, for the stoving of wet sand supplies with high temperature, has apparent market prospect.
Description
Technical Field
The utility model belongs to the technical field of the material regeneration, concretely relates to sand is to large-scale indirect heating equipment of sand anti-spiral.
Background
Sand casting is suitable for single-piece, batch, and mass production of castings, and in particular, sand casting is also useful for complex structural members that cannot be formed by other manufacturing processes. The sand casting process is the most economical and convenient metal forming process. With the global economy integration process further aggravated and the international communication becoming more and more compact, the chinese foundry has become an important part of the international industrial production cooperation. However, the demand of casting sand in the sand casting process is quite large, and the natural sand source capable of being used for casting is less and less, so that the recovery and regeneration of the casting waste sand are very important for the sustainable development of the casting industry.
At present, the recovery and regeneration of waste foundry sand generally adopts a hot wet method to obtain high-quality regenerated sand. In the heat-wet process treatment of waste sand regeneration, waste sand needs to be roasted at high temperature, the roasted hot sand is cooled, ground, scrubbed, rinsed and concentrated to form wet sand, and finally the regenerated sand is formed through dehydration and drying. In the prior art, for example, in the continuous washing and recycling device for foundry waste sand provided in chinese patent publication No. CN103934412B, in the process of the heat and humidity method of the recycling device, a centrifugal dehydrator is generally disposed below a sand outlet of a grinding and scrubbing device, the centrifugal dehydrator is connected to an evaporator, and a large characteristic of drying treatment of sand by the evaporator is that high temperature supply is required, while high temperature waste heat is wasted in cooling treatment of roasted hot sand, heat emitted during cooling of hot sand is difficult to recover, and waste heat resources are difficult to be effectively utilized, so that energy consumption for recovering and regenerating foundry waste sand is large, and the development strategy of energy conservation and emission reduction advocated by the state is not met.
Therefore, aiming at the problems in the prior art, the sand-to-sand reverse-spiral large-scale heat exchange equipment which is applied to casting waste sand and can exchange heat with high efficiency and energy needs to be provided urgently.
SUMMERY OF THE UTILITY MODEL
To the problem in the correlation technique, the utility model provides a sand is to the large-scale indirect heating equipment of sand anti-spiral to overcome the above-mentioned technical problem that current correlation technique exists.
The technical scheme of the utility model is realized like this: a sand-to-sand reverse-spiral large heat exchange device used for heat exchange between hot sand and wet sand comprises a frame and a heat exchange cylinder arranged on the frame,
the heat exchange cylinder comprises an outer cylinder fixedly connected with the rack, a plurality of maintenance windows are hinged on the outer wall of the outer cylinder, an inner cylinder is sleeved in the outer cylinder and is coaxially arranged with the outer cylinder, an outer pipeline for conveying wet sand is formed by the inner wall of the outer cylinder and the outer wall of the inner cylinder, and an inner pipeline for conveying hot sand is arranged in the inner cylinder;
the outer wall of the inner cylinder is fixedly connected with outer spiral blades along the extending direction, the inner wall of the inner cylinder is provided with inner spiral blades along the extending direction, the outer spiral blades and the inner spiral blades are of a reverse spiral structure, and the heat exchange cylinder is provided with a driving assembly for driving the inner cylinder to rotate relative to the outer cylinder;
the heat exchange cylinder is obliquely arranged with the horizontal plane, the lower part of the outer cylinder is provided with a feed end for wet sand to enter, and the upper part of the outer cylinder is provided with a discharge end; the upper end of the inner cylinder is provided with a feed inlet for heat supply sand to enter, and the lower end of the inner cylinder is provided with a discharge outlet.
The utility model discloses a waste heat of hot sand after the calcination is dried to the green sand, has utilized the high temperature waste heat of hot sand after the calcination to carry out the heat exchange with the green sand, when carrying out rapid cooling to the hot sand, for the stoving of green sand supplies with high temperature, improves the utilization ratio of the energy greatly, has apparent market perspective.
As a further improvement of the scheme, the inner diameter of the inner cylinder is smaller than that of the outer cylinder, and the inner diameter of the inner cylinder is 1/3-1/5 of the inner diameter of the outer cylinder;
it should be noted that, in the traditional foundry waste sand recycling and regenerating process, the heat emitted during the cooling of the hot sand is difficult to recycle, and the reverse-spiral large-scale heat exchange equipment carries out heat exchange in a mode that the inner pipeline carries the hot sand and the outer pipeline carries the wet sand; furthermore, in order to balance the heat exchange efficiency and the heat exchange uniformity of the hot sand and the wet sand, the outer spiral blades and the inner spiral blades which are in reverse spiral are used for quantitatively and uniformly conveying the wet sand and the hot sand respectively, so that the phenomena of incomplete drying of the wet sand, insufficient cooling of the hot sand and the like caused by nonuniform local heat exchange of heat exchange equipment are avoided, and the inner diameter ratio of the inner cylinder and the outer cylinder is configured appropriately, so that the heat exchange between the hot sand of the inner cylinder and the wet sand of the outer cylinder in unit time is sufficient, and the purpose of effectively reducing energy consumption is achieved.
As a further improvement of the scheme, when the heat exchange cylinder is inclined, an included angle alpha is formed between the heat exchange cylinder and the horizontal plane, wherein the alpha is more than or equal to 35 degrees and less than or equal to 75 degrees;
on one hand, the wet sand has certain viscosity, is easy to block and block when being conveyed from bottom to top, and is provided with a proper inclination angle, so that the smooth conveying of the wet sand is facilitated; on the other hand, the reverse-spiral large-scale heat exchange equipment is provided with a proper inclination angle, so that the heat exchange between the wet sand and the hot sand is sufficient when the hot sand is conveyed from top to bottom.
As a further improvement of the above scheme, the access window comprises a door part and a hinge, wherein a handle is arranged on the door part, and the door part is hinged with the outer wall of the outer cylinder through the hinge;
it should be noted that the green sand has a certain viscosity, and is easy to block and block when being conveyed from bottom to top, and the maintenance window is arranged on the outer cylinder, so that the heat exchange tube is convenient to regularly maintain and clean, the outer helical blades are prevented from being blocked due to the viscosity of the green sand, and the like, and the service life of the large reverse-helical heat exchange device is prolonged.
As a further improvement of the above scheme, two ends of the inner cylinder are respectively provided with a bearing, two ends of the outer cylinder are respectively and fixedly connected with an end cover, an inner ring of the bearing is abutted against an outer wall of the inner cylinder, an outer ring of the bearing is fixedly connected with the end cover of the outer cylinder, and the inner cylinder rotates relative to the outer cylinder through the bearing.
As a further improvement of the scheme, the opening of the feed end of the outer cylinder is upward, the opening of the discharge end of the outer cylinder extends obliquely downward and forms an included angle beta with the vertical direction, and the beta is more than or equal to 48 degrees and less than or equal to 62 degrees.
As a further improvement of the above scheme, a shock absorber is further arranged between the driving assembly and the frame, the shock absorber comprises a fixed seat and a plurality of plastic columns which are connected with each other, the driving assembly is fixedly connected with the fixed seat, and is fixedly connected with the frame through the plurality of plastic columns;
in order to improve the transmission efficiency of the driving assembly, a shock absorber is further arranged between the driving assembly and the rack, so that the shaking of the driving assembly can be removed, and the service life of the driving assembly is effectively prolonged.
As a further improvement of the scheme, the outer circumferential edge of the outer helical blade is provided with a detachable steel brush, and the outer helical blade is abutted against the inner wall of the outer barrel through the steel brush.
As a further improvement of the scheme, the driving assembly comprises a motor, a driving wheel and a driven wheel sleeved on the outer wall of the inner cylinder, the motor is fixedly connected with the rack, an output shaft of the motor is in driving connection with the driving wheel, the motor provides power for the driving wheel, and the driving wheel is in transmission connection with the driven wheel so as to drive the inner cylinder to rotate.
As a further improvement of the above scheme, the driving wheel is a driving sprocket/driving pulley, the driven wheel is a driven sprocket/driven pulley, and the driving wheel and the driven wheel are correspondingly connected in a transmission manner through a chain/belt; or the like, or, alternatively,
the driving wheel is a driving gear, the driven wheel is a driven gear, and the driving wheel and the driven wheel are in meshing fit to form transmission connection.
The utility model has the advantages that:
(1) the roasted hot sand needs to be cleaned after being cooled, and the cleaned wet sand is dried, the utility model adopts the afterheat of the roasted hot sand to dry the wet sand, utilizes the high-temperature afterheat of the roasted hot sand to exchange heat with the wet sand, and supplies high temperature for drying the wet sand while quickly cooling the hot sand, thereby greatly improving the utilization rate of energy sources and having obvious market application prospect;
(2) the inner and outer double-layer pipes are arranged, heat exchange is carried out in a mode that hot sand flows through the inner pipeline and wet sand flows through the outer pipeline, heat dissipated during cooling of the hot sand is fully utilized, the wet sand and the hot sand are respectively conveyed quantitatively and uniformly through the outer helical blades and the inner helical blades which are in reverse spiral with each other, the phenomena of incomplete drying of the wet sand, insufficient cooling of the hot sand and the like caused by nonuniform local heat exchange of heat exchange equipment are avoided, and bidirectional conveying of materials can be realized only by adopting single driving, so that the energy consumption is low, and the efficiency is high;
(3) through set up the access panel on the urceolus, be convenient for carry out regular maintenance and clearance to the heat transfer pipe, avoid outer helical blade to glue because of the wet sand and glue the situation such as jam and appear, improve the life of the large-scale indirect heating equipment of reverse spiral.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at b;
FIG. 4 is a view taken in the direction K of FIG. 1;
FIG. 5 is a schematic diagram of the operation of the present invention;
reference numerals are as follows:
1. a frame;
2. a heat exchange tube;
21. an outer cylinder; 211. an access panel; 211a, a door member; 211b, a handle; 211c, a hinge; 22. an inner barrel; 23. an outer helical blade; 24. a drive assembly; 241. a motor; 242. a driving wheel; 243. a driven wheel; 244. a shock absorber; 2441. a fixed seat; 2442. a plastic column; 25. an inner helical blade; 26. a bearing; 27. an end cap;
n0, inner pipe; n1, feed inlet; n2, a discharge hole;
w0, outer pipe; w1, feed end; w2, discharge end.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-5, a sand-to-sand reverse-spiral large heat exchange device is used for heat exchange between hot sand and green sand, and in the heat-wet process treatment of waste sand regeneration, the waste sand needs to be roasted at high temperature, the roasted hot sand is cooled, then ground, scrubbed, rinsed and concentrated to form green sand, and finally the green sand is dehydrated and dried to form regenerated sand. The roasted hot sand needs to be scrubbed after being cooled, the scrubbed wet sand is dried, the large reverse-spiral heat exchange device dries the wet sand by adopting the waste heat of the roasted hot sand, the high-temperature waste heat of the roasted hot sand is utilized to carry out heat exchange with the wet sand, and when the hot sand is rapidly cooled, high temperature is supplied for drying the wet sand, so that the utilization rate of energy is greatly improved, and the large reverse-spiral heat exchange device has a remarkable market application prospect.
In particular to a heat exchange device which comprises a frame 1 and a heat exchange cylinder 2 arranged on the frame 1,
the heat exchange cylinder 2 comprises an outer cylinder 21 fixedly connected with the frame 1, the outer wall of the outer cylinder 21 is hinged with a plurality of access windows 211, in this embodiment, each access window 211 comprises a door part 211a and a hinge 211c, a handle 211b is arranged on each door part 211a, and each door part 211a is hinged with the outer wall of the outer cylinder 21 through the hinge 211 c; it should be noted that the wet sand has a certain viscosity, and is easy to block and block when being conveyed from bottom to top, and the maintenance window 211 is arranged on the outer cylinder 21, so that the heat exchange tube can be maintained and cleaned regularly, the outer helical blades 23 can be prevented from being blocked due to the sticky wet sand, and the service life of the reverse-helical large-scale heat exchange device can be prolonged.
An inner cylinder 22 is sleeved in the outer cylinder 21, the inner cylinder 22 and the outer cylinder 21 are coaxially arranged, an outer pipeline W0 for conveying wet sand is formed by the inner wall of the outer cylinder 21 and the outer wall of the inner cylinder 22, an inner pipeline N0 for conveying hot sand is arranged in the inner cylinder 22, and the inner cylinder 22 can rotate around a coaxial line relative to the outer cylinder 21;
specifically, two ends of the inner cylinder 22 are respectively provided with a bearing 26, two ends of the outer cylinder 21 are respectively and fixedly connected with an end cover 27, an inner ring of the bearing 26 is abutted against an outer wall of the inner cylinder 22, an outer ring of the bearing 26 is fixedly connected with the end cover 27 of the outer cylinder 21, and the inner cylinder 22 rotates relative to the outer cylinder 21 through the bearing 26.
In the embodiment, the inner diameter of the inner cylinder 22 is smaller than the inner diameter of the outer cylinder 21, and the inner diameter of the inner cylinder 22 is 1/3-1/5 of the inner diameter of the outer cylinder 21; it should be noted that, in the conventional casting waste sand recycling and regenerating process, the heat emitted during the cooling of the hot sand is difficult to recycle, and an appropriate inner diameter ratio of the inner cylinder 22 to the outer cylinder 21 is configured, so that the heat exchange between the hot sand of the inner cylinder 22 and the wet sand of the outer cylinder 21 in unit time is sufficient, and the purpose of effectively reducing the energy consumption is achieved.
An outer helical blade 23 is fixedly connected to the outer wall of the inner cylinder 22 along the extending direction, an inner helical blade 25 is arranged on the inner wall of the inner cylinder 22 along the extending direction, in this embodiment, the outer helical blade 23 and the inner helical blade 25 are both in a single helical band structure, and the outer helical blade 23 and the inner helical blade 25 are in a reverse helical structure; the outer spiral blade 23 is provided with a detachable steel brush (not marked in the figure) at the peripheral edge, and the outer spiral blade 23 is abutted against the inner wall of the outer cylinder 21 through the steel brush; the outer helical blade 23 is tightly attached to the inner wall of the outer barrel 21 through the steel brush, so that the phenomenon that wet sand is clamped into a gap between the periphery of the outer helical blade 23 and the inner wall of the outer barrel 21 during conveying to influence the conveying efficiency is avoided;
it should be noted that, in the process of the hot wet method, the drying treatment of the sand by the evaporator has the big characteristic that high-temperature supply is needed, and the high-temperature waste heat is wasted in the cooling treatment of the roasted hot sand; furthermore, the large reverse-spiral heat exchange equipment carries out heat exchange in a mode of carrying hot sand out through an inner pipeline N0 and carrying wet sand out through an outer pipeline W0; furthermore, in order to balance the heat exchange efficiency and the heat exchange uniformity of the hot sand and the wet sand, the outer spiral blades 23 and the inner spiral blades 25 which are in reverse spiral are used for quantitatively and uniformly conveying the wet sand and the hot sand respectively, so that the phenomena of incomplete wet sand drying/insufficient hot sand cooling and the like caused by nonuniform local heat exchange of heat exchange equipment are avoided, the bidirectional conveying of materials can be realized only by adopting single driving, the energy consumption is low, and the efficiency is high.
The heat exchange cylinder 2 is provided with a driving assembly 24 for driving the inner cylinder 22 to rotate; in this embodiment, a damper 244 is further disposed between the driving assembly 24 and the frame 1, the damper 244 includes a fixed base 2441 and a plurality of plastic posts 2442 that are connected to each other, the driving assembly 24 is fixedly connected to the fixed base 2441, and is fixedly connected to the frame 1 through the plurality of plastic posts 2442; in order to improve the transmission efficiency of the driving assembly 24, a damper 244 is further disposed between the driving assembly 24 and the frame 1, so that the vibration of the driving assembly 24 can be eliminated, and the service life of the driving assembly 24 can be effectively prolonged.
In this embodiment, the driving assembly 24 includes a motor 241, a driving wheel 242 and a driven wheel 243 sleeved on an outer wall of the inner cylinder 22, the motor 241 is fixedly connected to the frame 1, an output shaft of the motor 241 is drivingly connected to the driving wheel 242, the motor 241 provides power for the driving wheel 242, and the driving wheel 242 is drivingly connected to the driven wheel 243, so as to drive the inner cylinder 22 to rotate;
specifically, the driving wheel 242 is a driving sprocket, the driven wheel 243 is a driven sprocket, and the driving wheel 242 and the driven wheel 243 are correspondingly connected in a transmission manner through chains; the driving wheel 242 and the driven wheel 243 are chain wheels, and a chain is wound between the driving wheel 242 and the driven wheel 243 to form transmission connection, so that the motor 241 and the driven wheel 243 sleeved on the inner barrel 22 are rich in allowance when determining the assembly distance, and the installation and the positioning are more convenient and rapid.
Similarly, in a preferred embodiment, the driving pulley 242 may also be a driving pulley, the driven pulley 243 is a driven pulley, and the driving pulley 242 and the driven pulley 243 are correspondingly connected through a belt to form the transmission connection.
The heat exchange cylinder 2 is obliquely arranged with the horizontal plane, in the embodiment, an included angle alpha is formed between the heat exchange cylinder 2 and the horizontal plane when the heat exchange cylinder is oblique, and the angle alpha is more than or equal to 35 degrees and less than or equal to 75 degrees; specifically, the included angle α is preferably 50 °;
on one hand, the wet sand has certain viscosity, is easy to block and block when being conveyed from bottom to top, and is provided with a proper inclination angle, so that the smooth conveying of the wet sand is facilitated; on the other hand, the reverse-spiral large-scale heat exchange equipment is provided with a proper inclination angle, so that the heat exchange between the wet sand and the hot sand is sufficient when the hot sand is conveyed from top to bottom.
The lower part of the outer cylinder 21 is provided with a feed end W1 for wet sand to enter, and the upper part of the outer cylinder is provided with a discharge end W2; in the embodiment, the opening of the feed end W1 of the outer cylinder 21 faces upwards, the opening of the discharge end W2 of the outer cylinder 21 extends downwards in an inclined manner, and forms an included angle beta with the vertical direction, wherein the included angle beta is more than or equal to 48 degrees and less than or equal to 62 degrees; the upper end of the inner cylinder 22 is provided with a feeding hole N1 for heat supply sand to enter, and the lower end of the inner cylinder is provided with a discharging hole N2.
Through the above technical scheme of the utility model, in concrete application, in the hot wet process processing to waste sand regeneration, waste sand carries out the high temperature calcination, and the hot sand after the calcination need cool off the back and clean, and the wet sand after cleaning then needs to carry out drying process. The large-scale reverse-spiral heat exchange equipment is provided with an inner layer pipe and an outer layer pipe, hot sand is removed through the inner pipe N0, and heat exchange is carried out in a mode that wet sand is removed through the outer pipe W0, so that heat dissipated when the hot sand is cooled is fully utilized.
Firstly, a motor 241 of the driving assembly 24 is started, the motor 241 drives a driving wheel 242, and the driving wheel 242 is in transmission connection with a driven wheel 243 to drive the inner barrel 22 to rotate; inputting roasted hot sand from a feed inlet N1 of an inner cylinder 22 of the heat exchange cylinder 2, and simultaneously inputting wet sand to be dried from a feed end W1 of an outer cylinder 21;
then, the hot sand is driven by the inner spiral blade 25 to move from top to bottom, the wet sand is driven by the outer spiral blade 23 to move from bottom to top, the high-temperature waste heat of the roasted hot sand exchanges heat with the wet sand, and the hot sand is rapidly cooled and simultaneously supplies high temperature for drying the wet sand;
finally, the hot sand is output through a discharge port N2 of the inner cylinder 22 after being cooled, and the wet sand is thrown out from a discharge end W2 of the outer cylinder 21 after being dried.
Example 2
The present invention provides one of the embodiments, the main technical solution and embodiment 1 of this embodiment, and the unexplained features in this embodiment adopt the explanation in embodiment 1, which is not repeated herein. This example differs from example 1 in that:
in this embodiment, the driving wheel 242 is a driving gear, the driven wheel 243 is a driven gear, and the driving wheel 242 and the driven wheel 243 are engaged to form the transmission connection;
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a sand is to large-scale indirect heating equipment of sand anti-spiral for hot sand carries out the heat exchange with the green sand, including the frame to and set up the heat transfer section of thick bamboo in the frame, its characterized in that:
the heat exchange cylinder comprises an outer cylinder fixedly connected with the rack, a plurality of maintenance windows are hinged on the outer wall of the outer cylinder, an inner cylinder is sleeved in the outer cylinder and is coaxially arranged with the outer cylinder, an outer pipeline for conveying wet sand is formed by the inner wall of the outer cylinder and the outer wall of the inner cylinder, and an inner pipeline for conveying hot sand is arranged in the inner cylinder;
the outer wall of the inner cylinder is fixedly connected with outer spiral blades along the extending direction, the inner wall of the inner cylinder is provided with inner spiral blades along the extending direction, the outer spiral blades and the inner spiral blades are of a reverse spiral structure, and the heat exchange cylinder is provided with a driving assembly for driving the inner cylinder to rotate relative to the outer cylinder;
the heat exchange cylinder is obliquely arranged with the horizontal plane, the lower part of the outer cylinder is provided with a feed end for wet sand to enter, and the upper part of the outer cylinder is provided with a discharge end; the upper end of the inner barrel is provided with a feed inlet for heat supply sand to enter, and the lower end of the inner barrel is provided with a discharge outlet.
2. The large sand-to-sand reverse-spiral heat exchange device as claimed in claim 1, wherein the inner diameter of the inner cylinder is smaller than that of the outer cylinder, and the inner diameter of the inner cylinder is 1/3-1/5 of the inner diameter of the outer cylinder.
3. The large sand-to-sand reverse-spiral heat exchange device of claim 1, wherein the heat exchange cylinder is inclined to form an included angle α of 35 ° to 75 ° with the horizontal plane.
4. The large sand-to-sand reverse-spiral heat exchange device as claimed in claim 1, wherein the access window comprises a door part and a hinge, a handle is arranged on the door part, and the door part is hinged with the outer wall of the outer barrel through the hinge.
5. The large sand-to-sand inverse spiral heat exchange device as claimed in claim 1, wherein bearings are respectively arranged at two ends of the inner cylinder, end covers are respectively and fixedly connected to two ends of the outer cylinder, an inner ring of each bearing is abutted to an outer wall of the inner cylinder, an outer ring of each bearing is fixedly connected to the end cover of the outer cylinder, and the inner cylinder rotates relative to the outer cylinder through the bearings.
6. The large sand-to-sand reverse-spiral heat exchange equipment as claimed in claim 1, wherein the opening of the feed end of the outer cylinder is upward, the opening of the discharge end of the outer cylinder is obliquely and downwardly extended, and forms an included angle β with the vertical direction, wherein β is greater than or equal to 48 degrees and less than or equal to 62 degrees.
7. The large sand-to-sand reverse-spiral heat exchange device as claimed in claim 1, wherein a damper is further arranged between the driving assembly and the frame, the damper comprises a fixed seat and a plurality of plastic columns which are connected with each other, the driving assembly is fixedly connected with the fixed seat, and the driving assembly is fixedly connected with the frame through the plurality of plastic columns.
8. The large sand-to-sand reverse-spiral heat exchange device as claimed in claim 1, wherein the outer spiral blades are provided with detachable steel brushes at the peripheral edges, and the outer spiral blades are abutted against the inner wall of the outer cylinder through the steel brushes.
9. The large sand-to-sand reverse-spiral heat exchange device as claimed in claim 1, wherein the driving assembly comprises a motor, a driving wheel and a driven wheel sleeved on the outer wall of the inner cylinder, the motor is fixedly connected with the frame, an output shaft of the motor is in driving connection with the driving wheel, the motor provides power for the driving wheel, and the driving wheel is in driving connection with the driven wheel so as to drive the inner cylinder to rotate.
10. The large sand-to-sand reverse-spiral heat exchange device as claimed in claim 9, wherein the driving wheel is a driving sprocket/driving pulley, the driven wheel is a driven sprocket/driven pulley, and the driving wheel and the driven wheel are correspondingly in transmission connection through a chain/belt; or the like, or, alternatively,
the driving wheel is a driving gear, the driven wheel is a driven gear, and the driving wheel and the driven wheel are in meshing fit to form transmission connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220430724.XU CN217383685U (en) | 2022-03-01 | 2022-03-01 | Sand-to-sand reverse-spiral large heat exchange equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220430724.XU CN217383685U (en) | 2022-03-01 | 2022-03-01 | Sand-to-sand reverse-spiral large heat exchange equipment |
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| CN217383685U true CN217383685U (en) | 2022-09-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115161468A (en) * | 2022-08-05 | 2022-10-11 | 宜春市金地锂业有限公司 | Lithium heat-cycle system is carried to lepidolite |
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2022
- 2022-03-01 CN CN202220430724.XU patent/CN217383685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115161468A (en) * | 2022-08-05 | 2022-10-11 | 宜春市金地锂业有限公司 | Lithium heat-cycle system is carried to lepidolite |
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