CN209326402U - Cooling tower is used in a kind of production of chemical reagent auxiliary agent - Google Patents
Cooling tower is used in a kind of production of chemical reagent auxiliary agent Download PDFInfo
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- CN209326402U CN209326402U CN201920022626.0U CN201920022626U CN209326402U CN 209326402 U CN209326402 U CN 209326402U CN 201920022626 U CN201920022626 U CN 201920022626U CN 209326402 U CN209326402 U CN 209326402U
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- tower body
- auxiliary agent
- chemical reagent
- reagent auxiliary
- feed pipe
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Abstract
The utility model discloses a kind of chemical reagent auxiliary agent production cooling towers, including upper tower body and lower tower body, the circular bottom part of upper tower body and the annular top of lower tower body respectively be fixedly connected at the top and bottom of ventilator cowling, lower tower body inner cavity is equipped with cooling pond, is fixedly installed with cooler on the right side of lower tower body.To quickly cool down to chemical reagent auxiliary agent, simultaneously by the way that chemical reagent auxiliary agent to be isolated with substances such as cold fluids, it avoids direct contact with, then the security and stability of chemical reagent auxiliary agent in production is improved, and the quality of chemical reagent auxiliary agent, and in the operating of double shaft servo motors, the rotation of second angular wheel is driven by the first angular wheel, so that the ellipse on shaft bar contradicts plate and contradicts and drive support rod and cover board to move up and down to assist air draft to cool down, when double shaft servo motors do not work, ventilation duct is blocked by cover board, it avoids extraneous pollutant from falling into tower body to pollute the substance of tower body.
Description
Technical field
The utility model relates to chemical production technical field, cooling tower is used in specially a kind of chemical reagent auxiliary agent production.
Background technique
Cooling tower is a kind of circulating water equipment, is dispersed using the evaporation endothermic principle of water and is produced in industrial or refrigeration air-conditioner
For raw waste heat to guarantee the device of the operation of system, cooling tower is to use water as circulating coolant, absorbs heat from a system
It is emitted into atmosphere, to reduce the device of water temperature, cold is to carry out cold and hot exchange after contacting using water with air flowing to generate steaming
Vapour, steam volatilization take away heat and reach the principles such as evaporative heat loss, convective heat transfer and radiant heat transfer to disperse industrial or refrigeration sky
The waste heat generated in tune reduces the evaporating radiator of water temperature, and to guarantee the normal operation of system, device is generally tubbiness, therefore
Entitled cooling tower, however the existing cooling tower cooling effect for the production of chemical industry chemical reagent auxiliary agent is poor, and there are one
Fixed risk is easy to appear explosion, and ventilation opening blowing machine is substantially open type if control is bad, exists certain
Risk, and be easy to pollute tower substance in vivo so that the substances such as leaf rubbish enter in tower body.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of chemical reagent auxiliary agent production cooling tower, solves
Cooling effect is poor, and there are certain risk, if control is bad, be easy to appear explosion, and ventilation opening outlet air
Machine is substantially open type, and there are certain risks, and is easy so that the substances such as leaf rubbish enter in tower body, to tower body
The problem of interior substance pollutes.
(2) technical solution
To achieve the above object, the utility model provides the following technical solutions: a kind of chemical reagent auxiliary agent production cooling
Tower, including upper tower body and lower tower body, the annular top of the circular bottom part of the upper tower body and lower tower body respectively with the top of ventilator cowling
Portion is fixedly connected with bottom, and the lower tower body inner cavity is equipped with cooling pond, is fixedly installed with cooler on the right side of the lower tower body,
The cooler is connected to cooling pond, and the bottom of the lower tower body inner wall is fixedly installed with booster water pump, the booster water pump
Discharge ends tap have the first cold flow pipe and spray tube, the side surface of the spray tube offers multiple spray apertures, the upper tower
The inner cavity of body is provided with feed pipe, and the top of the feed pipe is run through the top of upper tower body inner cavity and extended to outside it, described
The other end of feed pipe runs through the right side of upper tower body inner cavity and extends to outside, and the both ends of the feed pipe are fixedly installed with respectively
First regulating valve and the second regulating valve, the feed pipe spiral in the shape of a spiral in the inner cavity of upper tower body, in the pipe of the feed pipe
Inserted with the second cold flow pipe, one end of the first cold flow pipe, which is inserted into the side of feed pipe and extends to it, manages interior and the second cold flow
One end of pipe is fixedly connected, the other end of the second cold flow pipe through feed pipe inner wall and extend to outside it, it is described on
The top of tower body is equipped with ventilation duct, and the inner wall of the ventilation duct, which is fixed by the bracket, is equipped with double shaft servo motors, described double
The both ends of shaft servo motor output shaft are connected to air suction fan blade and the first angular wheel, first conical tooth with fixing sleeve respectively
The second angular wheel is engaged on the left of wheel, second angular wheel is fixedly attached to the side surface of shaft bar, the shaft
Bar both ends extend through the inside of bracket and extend to its lateral surface, and the shaft bar is connect with holder pivots, the shaft bar
Both ends be fixedly connected to ellipse and contradict plate, the ellipse contradicts plate and is eccentrically set on one end of shaft bar, described ellipse
The top that circle contradicts plate, which contradicts, is connected with support rod, and the bottom end of the support rod offers cooperation ellipse and contradicts what plate used
Groove, the top of two support rods are fixedly connected with the bottom of cover board, the bottom of the cover board and the top of ventilation duct
It connecting, the bottom of the cover board is fixedly installed with slide bar, and the side surface of the slide bar is slidably socketed there are two supporting block, and two
The side of a supporting block is fixedly connected with the inner wall of ventilation duct, and the side surface fixing sleeve of the slide bar is connected to fixed ring, institute
The side surface for stating slide bar is socketed with spring, the top with the bottom of fixed ring and downside supporting block respectively at the both ends of the spring
It is fixedly connected.
Preferably, the inner wall of the upper tower body is fixedly connected with annular Diversion Plate, and the annular Diversion Plate is located at ventilator cowling
Top.
Preferably, the side surface of the feed pipe is socketed with flase floor, and the side surface of the flase floor is interior with upper tower body
Wall is fixedly connected.
Preferably, the bottom of the cover board is fixedly connected with waffle slab.
Preferably, the outer surface of the inner wall of the feed pipe and the second cold flow pipe is equipped with erosion resistant coating.
Preferably, the spherical shape of the shape of the cover board.
(3) beneficial effect
The utility model provides a kind of chemical reagent auxiliary agent production cooling tower.Have it is following the utility model has the advantages that
(1), chemical reagent auxiliary agent production cooling tower, by the setting of cooling pond and cooler, booster water pump,
First cold flow pipe, spray tube, feed pipe, the second cold flow pipe, ventilation duct, double shaft servo motors, air suction fan blade, the first conical tooth
Wheel, the second angular wheel, shaft bar, ellipse contradict plate, support rod, cover board, slide bar, supporting block, the phase of fixed ring and spring
It is mutually used cooperatively, cooler persistently freezes the liquid of cooling pond, and booster water pump is defeated by the first cold flow pipe by cold fluid
It is sent in the second cold flow pipe, is then flowed back into cooling pond by the second cold flow pipe, while cold fluid is sprayed also by spray tube
Out, and chemical reagent auxiliary agent be flowed into feed pipe by the cold fluid of the second cold flow pipe to inside chemical reagent auxiliary agent carry out it is cold
Heat alternately cools down, and outside carries out spraying cooling to the outside of feed pipe by spray tube, and cold fluid connects with spray tube when spray
The high-temperature steam generated is touched, drives the quick discharge intracorporal steam of tower of air suction fan blade operating to reduce tower by double shaft servo motors
Intracorporal temperature, to quickly cool down to chemical reagent auxiliary agent, while by by the objects such as chemical reagent auxiliary agent and cold fluid
Matter isolation, avoids direct contact with, and then improves the security and stability and chemical reagent auxiliary agent of chemical reagent auxiliary agent in production
Quality, and double shaft servo motors operating when, by the first angular wheel drive the second angular wheel rotation so that shaft
Ellipse on bar contradicts plate and contradicts and drive support rod and cover board to move up and down to assist air draft to cool down, double shaft servo motors
When not working, ventilation duct is blocked by cover board, avoids extraneous pollutant from falling into tower body and dirt is caused to the substance of tower body
Dye.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the enlarged diagram of A in the utility model structure chart 1；
Fig. 3 is the enlarged diagram of B in the utility model structure chart 1.
In figure: 1, upper tower body；2, lower tower body；3, ventilator cowling；4, cooling pond；5, cooler；6, booster water pump；7, first
Cold flow pipe；8, spray tube；9, feed pipe；10, the first regulating valve；11, the second regulating valve；12, the second cold flow pipe；13, ventilation duct；
14, double shaft servo motors；15, air suction fan blade；16, the first angular wheel；17, the second angular wheel；18, shaft bar；19, ellipse
Circle contradicts plate；20, support rod；21, cover board；22, slide bar；23, supporting block；24, fixed ring；25, spring；26, annular diversion
Plate；27, flase floor；28, waffle slab；29, erosion resistant coating.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, the utility model provides a kind of technical solution: a kind of chemical reagent auxiliary agent production cooling tower,
Including upper tower body 1 and lower tower body 2, the annular top of the circular bottom part of upper tower body 1 and lower tower body 2 top with ventilator cowling 3 respectively
It is fixedly connected with bottom, lower 2 inner cavity of tower body is equipped with cooling pond 4, and the right side of lower tower body 2 is fixedly installed with cooler 5, cooler
5 are connected to cooling pond 4, and the bottom of lower 2 inner wall of tower body is fixedly installed with booster water pump 6, and the discharge ends tap of booster water pump 6 has
First cold flow pipe 7 and spray tube 8, the side surface of spray tube 8 offer multiple spray apertures, and the inner cavity of upper tower body 1 is provided with charging
Pipe 9, the top of feed pipe 9 are run through the top of upper 1 inner cavity of tower body and are extended to outside it, and the other end of feed pipe 9 runs through upper tower
The right side of 1 inner cavity of body simultaneously extends to outside, and the both ends of feed pipe 9 are fixedly installed with the first regulating valve 10 and the second regulating valve respectively
11, feed pipe 9 spirals in the shape of a spiral in the inner cavity of upper tower body 1, and inserted with the second cold flow pipe 12 in the pipe of feed pipe 9, first is cold
One end of flow tube 7 is inserted into the side of feed pipe 9 and is extended in its pipe and is fixedly connected with one end of the second cold flow pipe 12, and second is cold
The other end of flow tube 12 runs through the inner wall of feed pipe 9 and extends to outside it, and the inner wall of upper tower body 1 is fixedly connected with annular diversion
Plate 26, annular Diversion Plate 26 are located at the top of ventilator cowling 3, and by the setting of annular Diversion Plate 26, upper tower body 1 will be sprayed by playing
Cold fluid on inner wall is drained in cooling pond 4, and cold fluid is avoided to flow at ventilator cowling 3 and be lost outside tower and go, feed pipe 9
The outer surface of inner wall and the second cold flow pipe 12 is equipped with erosion resistant coating 29, improves feed pipe 9 and second by setting erosion resistant coating 29
The service life of cold flow pipe 12 avoids the corrosion of feed pipe 9 and the second cold flow pipe 12 by chemical reagent auxiliary agent, feed pipe 9
Side surface is socketed with flase floor 27, and the side surface of flase floor 27 is fixedly connected with the inner wall of upper tower body 1, passes through setting for flase floor 27
It sets, liquid contacts the steam progress partial blockage generated with feed pipe 9 after playing spray, and whole steam is avoided directly to pass through ventilation
Pipe 13, which is directly emitted, to be caused largely to waste, and the top of upper tower body 1 is equipped with ventilation duct 13, and the inner wall of ventilation duct 13 passes through branch
Frame is fixedly installed with double shaft servo motors 14, and the both ends of double 14 output shafts of shaft servo motor are connected to air draught with fixing sleeve respectively
Flabellum 15 and the first angular wheel 16, the left side of the first angular wheel 16 are engaged with the second angular wheel 17, the second angular wheel
17 are fixedly attached to the side surface of shaft bar 18, and 18 both ends of shaft bar extend through the inside of bracket and extend to its lateral surface,
Shaft bar 18 is connect with holder pivots, and the both ends of shaft bar 18 are fixedly connected to ellipse and contradict plate 19, and ellipse contradicts plate
19 are eccentrically set on one end of shaft bar 18, and the top that ellipse contradicts plate 19, which contradicts, is connected with support rod 20, support rod 20
Bottom end offers cooperation ellipse and contradicts the groove that plate 19 uses, and bottom of the top of two support rods 20 with cover board 21 is fixed
Connection, the bottom of cover board 21 is fixedly connected with waffle slab 28, and by the setting of waffle slab 28, the steam to come will be absorbed by, which playing, leads to
It crosses waffle slab 28 and carries out convolution isolation again, lift steam droplet and be collected, reduce the effect that vapor liquid is lost, cover board 21
The spherical shape of shape, the bottom of cover board 21 and the top of ventilation duct 13 connect, and the bottom of cover board 21 is fixedly installed with slide bar
22, the side surface of slide bar 22 is slidably socketed there are two supporting block 23, and the side of two supporting blocks 23 and the inner wall of ventilation duct 13 are solid
Fixed connection, the side surface fixing sleeve of slide bar 22 are connected to fixed ring 24, and the side surface of slide bar 22 is socketed with spring 25, and the two of spring 25
End is fixedly connected with the top of the bottom of fixed ring 24 and downside supporting block 23 respectively.
In use, the liquid of cooling pond 4 is persistently freezed by cooler 5, and cold fluid is passed through the by booster water pump 6
One cold flow pipe 7 is transported in the second cold flow pipe 12, is then flowed back into cooling pond 4 by the second cold flow pipe 12, while cold fluid
It sprays out and is flowed into the cooling pond of lower section also by spray tube 8, so that cold fluid is recycled, and it is chemical
Reagent auxiliary agent be flowed into feed pipe 9 by the cold fluid of the second cold flow pipe 12 to inside chemical reagent auxiliary agent carry out hot and cold alternation into
Row cooling, outside carry out spraying cooling to the outside of feed pipe 9 by spray tube 8, and cold fluid contacts generation with spray tube 8 when spray
High-temperature steam, driving air suction fan blade 15 to operate quickly discharge tower intracorporal steam by double shaft servo motors 14 reduces tower body
Interior temperature, to quickly cool down to chemical reagent auxiliary agent, while by by the substances such as chemical reagent auxiliary agent and cold fluid
Isolation, avoids direct contact with, and then improves chemical reagent auxiliary agent security and stability in production and chemical reagent auxiliary agent
Quality, and in the operating of double shaft servo motors 14, drive the second angular wheel 17 to rotate by the first angular wheel 16, so that
Ellipse on shaft bar 18 contradicts plate 19 and contradicts and drive support rod 20 and the up and down motion of cover board 21 to assist air draft to cool down, by
Slide bar stablizes cover board, at the same 25 auxiliary cover plate 21 of spring and support rod 20 quickly to get off to cooperate ellipse contradict plate 19
Operation, when double shaft servo motors 14 do not work, retracts cover board 21 under the action of spring 25 and blocks to ventilation duct 13, keep away
Exempt from extraneous pollutant and falls into the content for polluting to the substance of tower body in tower body, while being not described in detail in this specification
Belong to the prior art well known to professional and technical personnel in the field.
It can to sum up obtain, chemical reagent auxiliary agent production cooling tower by the setting of cooling pond 4 and cooler 5, increases
Water pump 6, spray tube 8, feed pipe 9, the second cold flow pipe 12, ventilation duct 13, double shaft servo motors 14, is inhaled first cold flow pipe 7
Fan leaf 15, the first angular wheel 16, the second angular wheel 17, shaft bar 18, ellipse contradict plate 19, support rod 20, cover board
21, slide bar 22, supporting block 23, fixed ring 24 and spring 25 are used in conjunction with each other, and cooler 5 holds the liquid of cooling pond 4
Continuous refrigeration, and cold fluid is transported in the second cold flow pipe 12 by booster water pump 6 by the first cold flow pipe 7, then by the second cold flow
Pipe 12 flows back into cooling pond 4, while cold fluid is sprayed out also by spray tube 8, and chemical reagent auxiliary agent be flowed into
It carries out hot and cold alternation to inside chemical reagent auxiliary agent by the cold fluid of the second cold flow pipe 12 in expects pipe 9 to cool down, outside is by spraying
Shower pipe 8 carries out spraying cooling to the outside of feed pipe 9, and cold fluid contacts the high-temperature steam of generation with spray tube 8 when spray, by double
Shaft servo motor 14 drives air suction fan blade 15 to operate and the intracorporal steam of tower is quickly discharged to reduce the intracorporal temperature of tower, thus fastly
Speed cools down to chemical reagent auxiliary agent, while by the way that chemical reagent auxiliary agent to be isolated with substances such as cold fluids, avoiding directly connecing
Touching, then improves the quality of chemical reagent auxiliary agent security and stability in production and chemical reagent auxiliary agent, and it is double go out
When axis servo motor 14 operates, the second angular wheel 17 is driven to rotate by the first angular wheel 16, so that ellipse on shaft bar 18
Circle contradicts plate 19 and contradicts and drive support rod 20 and cover board 21 to move up and down to assist air draft to cool down, double shaft servo motors 14
When not working, ventilation duct 13 is blocked by cover board 21, avoids extraneous pollutant from falling into tower body and the substance of tower body is made
At pollution.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of production of chemical reagent auxiliary agent cooling tower, including upper tower body (1) and lower tower body (2), it is characterised in that: on described
The circular bottom part of tower body (1) is fixedly connected at the top and bottom of ventilator cowling (3) respectively with the annular top of lower tower body (2), institute
It states lower tower body (2) inner cavity and is equipped with cooling pond (4), be fixedly installed with cooler (5) on the right side of the lower tower body (2), it is described cold
But device (5) is connected to cooling pond (4), and the bottom of lower tower body (2) inner wall is fixedly installed with booster water pump (6), the increasing
The discharge ends tap of water pump (6) has the first cold flow pipe (7) and spray tube (8), and the side surface of the spray tube (8) offers more
The inner cavity of a spray apertures, the upper tower body (1) is provided with feed pipe (9), and upper tower body (1) is run through on the top of the feed pipe (9)
The top of inner cavity simultaneously extends to outside it, and the other end of the feed pipe (9) runs through the right side of upper tower body (1) inner cavity and extends to
The both ends of outside, the feed pipe (9) are fixedly installed with the first regulating valve (10) and the second regulating valve (11), the charging respectively
Pipe (9) spirals in the shape of a spiral in the inner cavity of upper tower body (1), inserted with the second cold flow pipe (12), institute in the pipe of the feed pipe (9)
It states the side of one end insertion feed pipe (9) of the first cold flow pipe (7) and extends to one end in its pipe with the second cold flow pipe (12)
It is fixedly connected, the other end of the second cold flow pipe (12) runs through the inner wall of feed pipe (9) and extends to outside it, the upper tower
The top of body (1) is equipped with ventilation duct (13), and the inner wall of the ventilation duct (13), which is fixed by the bracket, is equipped with double shaft servo electricity
Machine (14), the both ends of double shaft servo motor (14) output shafts are connected to air suction fan blade (15) and the first cone with fixing sleeve respectively
Shape gear (16) is engaged with the second angular wheel (17) on the left of first angular wheel (16), second angular wheel
(17) it is fixedly attached to the side surface of shaft bar (18), shaft bar (18) both ends extend through the inside of bracket and extend to
Its lateral surface, the shaft bar (18) connect with holder pivots, and the both ends of the shaft bar (18) are fixedly connected to ellipse
It contradicts plate (19), the ellipse contradicts one end that plate (19) are eccentrically set on shaft bar (18), and the ellipse contradicts plate
(19) top contradicts and is connected with support rod (20), and the bottom end of the support rod (20) offers cooperation ellipse and contradicts plate (19)
The top of the groove used, two support rods (20) is fixedly connected with the bottom of cover board (21), the cover board (21)
The top of bottom and ventilation duct (13) connects, and the bottom of the cover board (21) is fixedly installed with slide bar (22), the slide bar
(22) side surface is slidably socketed there are two supporting block (23), and the sides of two supporting blocks (23) is interior with ventilation duct (13)
Wall is fixedly connected, and the side surface fixing sleeve of the slide bar (22) is connected to fixed ring (24), the side surface socket of the slide bar (22)
Have spring (25), the both ends of the spring (25) are consolidated with the bottom of fixed ring (24) and the top of downside supporting block (23) respectively
Fixed connection.
2. a kind of chemical reagent auxiliary agent production cooling tower according to claim 1, it is characterised in that: the upper tower body
(1) inner wall is fixedly connected with annular Diversion Plate (26), and the annular Diversion Plate (26) is located at the top of ventilator cowling (3).
3. a kind of chemical reagent auxiliary agent production cooling tower according to claim 1, it is characterised in that: the feed pipe
(9) side surface is socketed with flase floor (27), and the side surface of the flase floor (27) is fixedly connected with the inner wall of upper tower body (1).
4. a kind of chemical reagent auxiliary agent production cooling tower according to claim 1, it is characterised in that: the cover board (21)
Bottom be fixedly connected with waffle slab (28).
5. a kind of chemical reagent auxiliary agent production cooling tower according to claim 1, it is characterised in that: the feed pipe
(9) outer surface of inner wall and the second cold flow pipe (12) is equipped with erosion resistant coating (29).
6. a kind of chemical reagent auxiliary agent production cooling tower according to claim 1, it is characterised in that: the cover board (21)
The spherical shape of shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920022626.0U CN209326402U (en) | 2019-01-07 | 2019-01-07 | Cooling tower is used in a kind of production of chemical reagent auxiliary agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920022626.0U CN209326402U (en) | 2019-01-07 | 2019-01-07 | Cooling tower is used in a kind of production of chemical reagent auxiliary agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209326402U true CN209326402U (en) | 2019-08-30 |
Family
ID=67730701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920022626.0U Expired - Fee Related CN209326402U (en) | 2019-01-07 | 2019-01-07 | Cooling tower is used in a kind of production of chemical reagent auxiliary agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209326402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636321A (en) * | 2020-12-15 | 2022-06-17 | 江苏中伟机械制造有限公司 | Be applied to industrial production's cooling device |
-
2019
- 2019-01-07 CN CN201920022626.0U patent/CN209326402U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636321A (en) * | 2020-12-15 | 2022-06-17 | 江苏中伟机械制造有限公司 | Be applied to industrial production's cooling device |
| CN114636321B (en) * | 2020-12-15 | 2023-10-24 | 江苏中伟机械制造有限公司 | Be applied to industrial production's cooling device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |