CN106678410B - Self-cleaning fluid flow direction control valve - Google Patents
Self-cleaning fluid flow direction control valve Download PDFInfo
- Publication number
- CN106678410B CN106678410B CN201710035975.1A CN201710035975A CN106678410B CN 106678410 B CN106678410 B CN 106678410B CN 201710035975 A CN201710035975 A CN 201710035975A CN 106678410 B CN106678410 B CN 106678410B
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- control valve
- self
- hole
- fluid flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 239000012530 fluid Substances 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 22
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 230000008021 deposition Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a self-cleaning fluid flow direction control valve, which comprises a valve body and a rotating shaft, wherein a rotating shaft supporting part is arranged on the valve body, a rotating shaft mounting hole for inserting the rotating shaft is formed in the inner side of the rotating shaft supporting part, a sewage draining hole is formed in the outer side of the rotating shaft supporting part, at least one rotating shaft groove is formed in the peripheral part of the rotating shaft, and the rotating shaft groove can communicate the rotating shaft mounting hole with the sewage draining hole so that carbon deposition and accumulated water in the rotating shaft mounting hole can be drained along the sewage draining hole. According to the self-cleaning fluid flow direction control valve provided by the invention, through the arrangement of the rotating shaft groove and the pollution discharge hole, the rotating shaft groove can be used for communicating the rotating shaft mounting hole with the pollution discharge hole, when accumulated water and carbon deposit occur in the rotating shaft mounting hole, the accumulated water and the carbon deposit can flow into the rotating shaft groove and then flow out of the valve body after passing through the pollution discharge hole, so that the blocking fault caused by the accumulated water and the carbon deposit is effectively avoided, the self-cleaning effect is realized, and the use reliability and the service life are effectively improved.
Description
Technical Field
The invention relates to the field of control valve equipment, in particular to a self-cleaning fluid flow direction control valve.
Background
Currently, in the process of controlling smoke emission, such as automobile exhaust or other smoke exhaust systems, the direction and flow of the emitted smoke is generally controlled by a single valve plate flow control valve.
The lower rotating shaft mounting hole of the fluid flow direction control valve in the prior art is a blind hole, when the fluid flow direction control valve is used, the lower rotating shaft is sleeved on the rotating shaft and then is arranged in the blind hole, however, because the lower rotating shaft mounting hole in the prior art is the blind hole, and the blind hole belongs to a semi-closed structure, after long-time use, the dead accident of the lower shaft sleeve and the blind hole is easily caused due to accumulated carbon water in the blind hole.
Therefore, how to improve the reliability of the use of the fluid flow direction control valve is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a self-cleaning fluid flow direction control valve which can realize self-cleaning, realize automatic falling of sewage or dust and ensure the use reliability of the control valve.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a self-cleaning fluid flow direction control valve, includes valve body and pivot, be equipped with pivot supporting part on the valve body, the confession has been seted up to the inboard of pivot supporting part the pivot mounting hole that the pivot was male, the blowdown hole has been seted up to the outside of pivot supporting part, at least one pivot recess has been seted up to the week portion of pivot, the pivot recess can with the pivot mounting hole with blowdown hole intercommunication, so that carbon deposition and ponding in the pivot mounting hole follow blowdown hole discharge.
Preferably, one end of the rotating shaft is sleeved with a lower shaft sleeve, and the rotating shaft is provided with a step surface which can be clamped with the lower shaft sleeve; the lower shaft sleeve may be fitted into the shaft mounting hole, and the lower shaft sleeve may be rotated in the shaft mounting hole.
Preferably, the rotation shaft groove extends from an end of the rotation shaft to the step surface, and an extending direction of the rotation shaft groove at the step surface is perpendicular to an extending direction at the end of the rotation shaft.
Preferably, the rotating shaft groove is arc-shaped from the step surface to the transition position of the rotating shaft end part.
Preferably, the drain hole is circular, and the diameter of the drain hole is the same as the inner diameter of the lower shaft sleeve or is between the inner diameter and the outer diameter of the lower shaft sleeve.
Preferably, the depth of the rotating shaft groove is 10% -20% of the diameter of the rotating shaft.
Preferably, the valve body is provided with a plurality of drain holes.
Preferably, the number of the rotating shaft grooves is at least two, and the rotating shaft grooves are uniformly distributed along the circumferential direction of the rotating shaft. Carrying out
Preferably, the extending direction of the rotating shaft groove at the end part of the rotating shaft is parallel to the axial direction of the rotating shaft.
Preferably, the number of the rotating shaft grooves is 5-6.
The self-cleaning fluid flow direction control valve provided by the invention comprises a valve body and a rotating shaft, wherein the valve body is provided with a rotating shaft supporting part, the inner side of the rotating shaft supporting part is provided with a rotating shaft mounting hole for the rotating shaft to be inserted, the outer side of the rotating shaft supporting part is provided with a sewage draining hole, the periphery of the rotating shaft is provided with at least one rotating shaft groove, and the rotating shaft groove can be used for communicating the rotating shaft mounting hole with the sewage draining hole so as to drain accumulated carbon and accumulated water in the rotating shaft mounting hole along the sewage draining hole. This automatically cleaning fluid flow direction control valve, through the pivot recess with the setting of blowdown hole, and the pivot recess can with the pivot mounting hole with blowdown hole intercommunication, works as ponding and carbon deposit appear in the pivot mounting hole when ponding and carbon deposit can flow into in the pivot recess, then pass through after the blowdown hole flow out the valve body, effectively avoid ponding and carbon deposit to lead to the card dead trouble, realized self-cleaning effect, the reliability in use effectively improves.
In a preferred embodiment, the depth of the spindle groove is 10% -20% of the spindle diameter. Above-mentioned setting, the degree of depth of pivot recess can not be too shallow to guarantee ponding and carbon deposit and flow out smoothly, the degree of depth of pivot recess also can not be too dark, in order to guarantee the intensity of pivot self guarantees the result of use and the life of pivot.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a self-cleaning fluid flow direction control valve according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of a spindle and lower spindle mounting hole of the control valve of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the shaft of the control valve of FIG. 1;
FIG. 4 is a schematic view of a spindle bottom view of the control valve of FIG. 1;
wherein: 1-valve body, 11-shaft support part, 12-blow-down hole, 13-drain hole, 2-shaft, 21-shaft groove and 3-lower shaft sleeve.
Detailed Description
The core of the invention is to provide a self-cleaning fluid flow direction control valve which has a self-cleaning function, can realize the automatic falling of sewage or dust, and ensures the use reliability of the control valve.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of an embodiment of a self-cleaning fluid flow direction control valve according to the present invention; FIG. 2 is an enlarged view of a portion of a spindle and lower spindle mounting hole of the control valve of FIG. 1; FIG. 3 is a schematic cross-sectional view of the shaft of the control valve of FIG. 1; fig. 4 is a schematic view illustrating a bottom structure of a rotating shaft of the control valve shown in fig. 1.
In this embodiment, the self-cleaning fluid flow direction control valve comprises a valve body 1 and a rotating shaft 2, wherein a rotating shaft supporting part 11 is arranged on the valve body 1, the rotating shaft supporting part 11 and the valve body 1 are of an integrated structure, a rotating shaft mounting hole for inserting the rotating shaft 2 is formed in the inner side of the rotating shaft supporting part 11, a sewage draining hole 12 is formed in the outer side of the rotating shaft supporting part 11, at least one rotating shaft groove 21 is formed in the peripheral part of the rotating shaft 2, and the rotating shaft groove 21 can communicate the rotating shaft mounting hole with the sewage draining hole 12 so that carbon deposition and accumulated water in the rotating shaft mounting hole can be drained along the sewage draining hole 12.
The inside of the shaft mounting hole is one end located inside the valve body 1, the outside is one end located outside the valve body 1, the shaft supporting part 11 is cylindrical, and the hollow part forms the shaft mounting hole in the middle.
This self-cleaning fluid flow direction control valve, through the setting of pivot recess 21 and blowhole 12, and pivot recess 21 can be with pivot mounting hole and blowhole 12 intercommunication, when ponding and carbon deposit appear in the pivot mounting hole, ponding and carbon deposit can flow into pivot recess 21, then flow out valve body 1 behind blowhole 12, effectively avoid ponding and carbon deposit to lead to the card dead trouble, realized the automatically cleaning effect, the use reliability effectively improves, the life of this control valve also obtains improving.
Further, the device also comprises a lower shaft sleeve 3, wherein the lower shaft sleeve 3 is fixedly sleeved at one end of the rotating shaft 2, and specifically, the lower shaft sleeve 3 and the rotating shaft 2 can be in clearance fit.
Specifically, in order to facilitate the assembly of the lower shaft sleeve 3 and the rotating shaft 2, the assembly position precision of the lower shaft sleeve 3 and the rotating shaft 2 is ensured, the rotating shaft 2 is provided with a step surface which can be clamped with the lower shaft sleeve 3, namely, the diameter of the end part of the rotating shaft 2 is smaller than the diameter of the main body part; after the lower shaft sleeve 3 is installed in the shaft installation hole, one end of the shaft 2 with smaller diameter is installed in the lower shaft sleeve 3, the lower shaft sleeve 3 can rotate in the shaft installation hole, and the shaft 2 can rotate in the lower shaft sleeve 3.
Here, in order to facilitate the rotation of the rotation shaft 2 while preventing the rotation shaft mounting hole from wearing the rotation shaft 2, a gap should be provided between the main body portion of the rotation shaft 2 and the rotation shaft mounting hole.
On the basis of the above embodiments, the rotating shaft groove 21 extends from the end of the rotating shaft 2 to the step surface, and the extending direction of the rotating shaft groove 21 at the step surface is perpendicular to the extending direction of the end of the rotating shaft 2, so that the carbon deposition and the accumulated water can flow into the rotating shaft groove 21 at the end of the rotating shaft 2 along the rotating shaft groove 21 at the step surface conveniently, and then flow out along the drain hole 12.
On the basis of the above embodiments, the transition position of the rotating shaft groove 21 from the step surface to the end of the rotating shaft 2 is arc-shaped, so that the arrangement can reduce the stress concentration at the corner of the rotating shaft groove 21 and ensure that the rotating shaft 2 has high enough strength. Of course, the position of the shaft groove 21 is not limited to the position provided in the present embodiment, and carbon deposition and water deposition can be facilitated.
On the basis of the above embodiments, the drain hole 12 is circular, and the diameter of the drain hole 12 is the same as the inner diameter of the lower sleeve 3. It should be noted that the diameter of the drain hole 12 should not be too large to prevent the lower shaft sleeve 3 from sliding off the shaft mounting hole, and at the same time, the diameter of the drain hole 12 should not be too small to affect the drain effect. Of course, the diameter of the drain hole 12 may also be between the inner diameter and the outer diameter of the lower bushing 3, preferably the diameter of the drain hole 12 is slightly larger than the inner diameter of the lower bushing 3.
The shape of the drain hole 12 is not limited to a circular shape, but may be a polygonal shape, and the like, and is not limited to the configuration shown in the present embodiment.
On the basis of the above embodiments, the depth of the rotating shaft groove 21 is 10% -20% of the diameter of the rotating shaft 2. Above-mentioned setting, the degree of depth of pivot recess 21 can not be too shallow to guarantee ponding and carbon deposit and flow out smoothly, the degree of depth of pivot recess 21 also can not be too dark, in order to guarantee the intensity of pivot 2 self, guarantee the result of use and the life of pivot 2.
On the basis of the above embodiments, the valve body 1 is provided with a plurality of drain holes 13, and the drain holes 13 can drain the sewage in the valve body 1, so as to further improve the self-cleaning effect of the control valve.
On the basis of the above embodiments, the number of the rotating shaft grooves 21 is at least two, and the rotating shaft grooves are uniformly distributed along the circumferential direction of the rotating shaft 2, so that the uniform pollution discharge effect can be ensured, and of course, the rotating shaft grooves 21 can be also arranged according to the actual carbon deposition and water accumulation conditions, for example, the positions with more accumulated carbon deposition can be provided with a plurality of rotating shaft grooves 21, the positions with less accumulated carbon deposition can be provided, and the number of the rotating shaft grooves 21 can be reduced.
Preferably, the number of the rotating shaft grooves 21 is 5-6.
On the basis of the above embodiments, the extending direction of the rotating shaft groove 21 at the end of the rotating shaft 2 is parallel to the axial direction of the rotating shaft 2. The arrangement can facilitate the outflow of accumulated carbon water, and the arrangement of the rotating shaft groove 21 is facilitated, and a certain included angle can be formed between the extending direction of the rotating shaft groove 21 and the axial direction of the rotating shaft 2 during actual processing.
Specifically, the fluid flow direction control valve provided in this embodiment may be a three-way valve, during installation, the lower shaft sleeve 3 is installed in the shaft installation hole in the valve body 1, then the bottom of the shaft 2 is vertically inserted in the lower shaft sleeve 3, multiple groups of shaft grooves 21 are machined on the shaft at the bottom of the shaft 2 before installation, carbon deposition and accumulated water can flow out of the valve body 1 through the shaft grooves 21 in the shaft 2 during the working process of the shaft 2, meanwhile, the drain hole 12 is machined out of the shaft installation hole at the bottom of the valve body 1, and a plurality of drain holes 13 are machined at the bottom of the valve body 1 and are used together with the shaft grooves 21 and the drain hole 12, so that the self-cleaning effect of the control valve is realized, and the service life and the service reliability of the control valve are improved.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The self-cleaning fluid flow direction control valve provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. The self-cleaning fluid flow direction control valve comprises a valve body (1) and a rotating shaft (2), wherein a rotating shaft supporting part (11) is arranged on the valve body (1), and a rotating shaft mounting hole for the rotating shaft (2) to be inserted is formed in the inner side of the rotating shaft supporting part (11), and the self-cleaning fluid flow direction control valve is characterized in that a pollution discharge hole (12) is formed in the outer side of the rotating shaft supporting part (11), at least one rotating shaft groove (21) is formed in the periphery of the rotating shaft (2), and the rotating shaft groove (21) can be used for communicating the rotating shaft mounting hole with the pollution discharge hole (12) so that carbon deposition and accumulated water in the rotating shaft mounting hole can be discharged along the pollution discharge hole (12); a lower shaft sleeve (3) is sleeved at one end of the rotating shaft (2), and a step surface which can be clamped with the lower shaft sleeve (3) is arranged on the rotating shaft (2); the lower shaft sleeve (3) can be installed in the rotating shaft installation hole, and the lower shaft sleeve (3) can rotate in the rotating shaft installation hole; the rotating shaft groove (21) extends from the end of the rotating shaft (2) to the step surface, and the extending direction of the rotating shaft groove (21) at the step surface is perpendicular to the extending direction at the end of the rotating shaft (2); the rotating shaft groove (21) is arc-shaped from the step surface to the transition position of the end part of the rotating shaft (2);
the rotary shaft supporting part (11) is cylindrical, the sewage draining hole (12) is circular, and the diameter of the sewage draining hole (12) is the same as the inner diameter of the lower shaft sleeve (3) or is between the inner diameter and the outer diameter of the lower shaft sleeve (3).
2. Self-cleaning fluid flow direction control valve according to claim 1, characterized in that the depth of the spindle groove (21) is 10% -20% of the diameter of the spindle (2).
3. Self-cleaning fluid flow direction control valve according to claim 1, characterized in that the valve body (1) is provided with a number of drain holes (13).
4. Self-cleaning fluid flow direction control valve according to claim 1, characterized in that the number of spindle grooves (21) is at least two and is evenly distributed along the circumference of the spindle (2).
5. Self-cleaning fluid flow direction control valve according to claim 4, characterized in that the extension direction of the spindle groove (21) at the end of the spindle (2) is parallel to the axial direction of the spindle (2).
6. Self-cleaning fluid flow direction control valve according to claim 5, characterized in that the number of spindle grooves (21) is 5-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035975.1A CN106678410B (en) | 2017-01-17 | 2017-01-17 | Self-cleaning fluid flow direction control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035975.1A CN106678410B (en) | 2017-01-17 | 2017-01-17 | Self-cleaning fluid flow direction control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106678410A CN106678410A (en) | 2017-05-17 |
| CN106678410B true CN106678410B (en) | 2024-01-30 |
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ID=58860092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710035975.1A Active CN106678410B (en) | 2017-01-17 | 2017-01-17 | Self-cleaning fluid flow direction control valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN106678410B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036064A (en) * | 2017-12-19 | 2018-05-15 | 长春汽四环腾达油脂化工有限公司 | A kind of fluid flow directional control valve |
| CN108036065A (en) * | 2017-12-19 | 2018-05-15 | 长春汽四环腾达油脂化工有限公司 | A kind of fluid flow directional control valve |
| CN108361390A (en) * | 2018-04-10 | 2018-08-03 | 江南阀门有限公司 | The anti-water erosion end mechanism of valve and butterfly valve |
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| CN203309224U (en) * | 2013-05-21 | 2013-11-27 | 富山阀门实业(苏州)有限公司 | Anti-freezing check valve |
| CN104295762A (en) * | 2014-05-20 | 2015-01-21 | 郝思宏 | Low-torque enforced sealing type fixing ball valve |
| CN204985810U (en) * | 2015-07-27 | 2016-01-20 | 方圆阀门集团丽水有限公司 | Hard -sealing and high -temperature ball valve |
| CN105864458A (en) * | 2016-06-02 | 2016-08-17 | 吉林省众鑫汽车装备有限公司 | Fluid flow direction control valve |
| CN106089984A (en) * | 2016-08-31 | 2016-11-09 | 樊勇 | A kind of circulation is secondary from the bush(ing) bearing of cloth lubricating oil film from blowdown |
| CN206409704U (en) * | 2017-01-17 | 2017-08-15 | 吉林省众鑫汽车装备有限公司 | A kind of automatically cleaning fluid flow directional control valve |
-
2017
- 2017-01-17 CN CN201710035975.1A patent/CN106678410B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2185350Y (en) * | 1993-12-25 | 1994-12-14 | 张新永 | Blowoff valve for receiver |
| CN2188685Y (en) * | 1994-04-07 | 1995-02-01 | 陈祥贵 | Flow reversal valve |
| US6328535B1 (en) * | 1997-01-03 | 2001-12-11 | Hobourn Automative Limited | Flow control valve capable of adjusting fluid flow characteristics in accordance with a position of a valve element in a bore |
| CN201672084U (en) * | 2010-05-17 | 2010-12-15 | 中国石化集团洛阳石油化工工程公司 | Hard sealing plug valve |
| CN202756720U (en) * | 2012-08-30 | 2013-02-27 | 上海阀特流体控制阀门有限公司 | Valve body of sector disk valve |
| CN203309224U (en) * | 2013-05-21 | 2013-11-27 | 富山阀门实业(苏州)有限公司 | Anti-freezing check valve |
| CN104295762A (en) * | 2014-05-20 | 2015-01-21 | 郝思宏 | Low-torque enforced sealing type fixing ball valve |
| CN204985810U (en) * | 2015-07-27 | 2016-01-20 | 方圆阀门集团丽水有限公司 | Hard -sealing and high -temperature ball valve |
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| CN106089984A (en) * | 2016-08-31 | 2016-11-09 | 樊勇 | A kind of circulation is secondary from the bush(ing) bearing of cloth lubricating oil film from blowdown |
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| CN106678410A (en) | 2017-05-17 |
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Effective date of registration: 20210707 Address after: Room 5128, Huada Tianshi innovation and service center, intersection of Xinxiu street and Dashun Road, Kuancheng District, Changchun City, Jilin Province Applicant after: Kelin Lantai Environmental Technology (Changchun) Co.,Ltd. Address before: 136100 No.1 Chuangye street, Gongzhuling Economic Development Zone, Siping City, Jilin Province Applicant before: JILIN ZHONGXIN AUTOMOTIVE EQUIPMENT Co.,Ltd. |
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