CN207507143U - A kind of compressed-air filter and its air filter - Google Patents
A kind of compressed-air filter and its air filter Download PDFInfo
- Publication number
- CN207507143U CN207507143U CN201721496500.4U CN201721496500U CN207507143U CN 207507143 U CN207507143 U CN 207507143U CN 201721496500 U CN201721496500 U CN 201721496500U CN 207507143 U CN207507143 U CN 207507143U
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- compressed
- air filter
- support element
- air
- fixator
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Abstract
The utility model discloses a kind of compressed-air filter and its air filter, compressed-air filter includes the first support element, the second support element and filter core；First support element is set to the inside of the compressed-air filter；Second support element is set to the outside of the compressed-air filter, and is coaxially disposed with first support element；The filter core is further fixed between first support element and second support element.The technical issues of compressed-air filter and its air filter of the utility model solve existing filtration device structure size bigger than normal, processing difficulties, of high cost, and filter core lacks support, service life is short.Realize that weight is lighter, easy processing, amount of parts is less, cost is lower, and gas circulates more unobstructed, circulation bigger, and filter core is by supports support so that filter core is unlikely to deform when filtering the compressed air of big flow.
Description
Technical field
The utility model is related to compressed-air filter field, more particularly to a kind of compressed-air filter and its air mistake
Filter device.
Background technology
In existing pneumatics, air filter, pressure reducing valve and oil sprayer are known as pneumatic three-major-items.To realize a variety of work(
Can, usually these three elements are fitted together in order, for gas source purification filtering, decompression and draining.More than element is more
Indispensable device in number pneumatic system, is connected with pneumatic equipment, realizes the exhaust and draining of compressed air quality, set
Meter and installation, in addition to more than element sole mass is ensured, it is also contemplated that saving, space, operation is easy for installation, can arbitrarily combine
Factor.Steam and oil droplet containing excess in the compressed air that air source comes out, while also solid impurity, such as iron rust, the grains of sand, pipe
Road sealant etc., these can damage piston packing ring, block the small de-air hole on pneumatic element, shorten the service life of component
Or it is allowed to fail.The effect of air filter is exactly to separate, and filter off sky liquid water, the liquid oil droplet in compressed air
Dust and solid impurity in gas.
Application number 201510781142.0 discloses a kind of air filter, including air filter ontology and positioned at this
The cup of body lower part, cup bottom are provided with drain valve；The side of air filter ontology has air intlet and air
Outlet, air intlet and air outlet slit are set on a horizontal line, cause that equipment is not compact, occupied space is big.In air filtration
Device body interior is provided with filter core, by clamping screw by filter core with filter body is concentric is fixedly connected, clamping screw is
Non-standard, processing cost is very high, and when filter core is very high or very long, clamping screw difficulty is very high as processing, processing cost
Also it is very high.Filter core top is provided with deflector, and lower section is provided with umbrella shape water fender, is surrounded outside cup by protective cover；It is described
Filter core is the cylindric filtering paper web of continuous catadioptric constant amplitude gauffer, by two layers of filter paper layer and is mixed between two layers of filter paper layer
Catalyst layer forms.Filter core is in itself without any support construction as protecting, once using, filter core is highly susceptible to oil, water
Erosion and intensity is caused to decline, be extremely easily damaged after being impacted by compressed air, cause equipment that can not apply.
Utility model content
The purpose of this utility model provides a kind of compressed-air filter and its air filter, using big orifice structure
Valve body, suitable for the air filtering system of demand big flow, and internal core is supported by a variety of stents so that filtering big flow
Compressed air when filter core be unlikely to deform.
The technical solution of the utility model：A kind of compressed-air filter, including the first support element, the second support element and filter
Core；First support element is set to the inside of the compressed-air filter；Second support element is set to the compression
The outside of air filter, and be coaxially disposed with first support element；First support element and second support element it
Between be further fixed on the filter core.Filter core is supported the protection and reinforcement of part, can also even if working long hours in pressure-air
It realizes prolonged work, maintains system worked well, reduce the cost for replacing filter core.
Preferably, first support element is any one of prismatic net, circular net and square grid.
Any of the above item is preferably, and second support element is any one of prismatic net, circular net and square grid.
Any of the above item is preferably, and the mesh of the mesh of first support element and second support element is substantially same
On one horizontal line, it is correspondingly arranged.It can ensure the support element that flows through that gas can be much smoother, reduce windage, reduce system burden.
Any of the above item is preferably, mesh at least part of the mesh of first support element and second support element
It is staggered.The path of compressed air can be extended, reduce the burden of windage and reduction to system.
Any of the above item is preferably, and the area of the single mesh of first support element is not less than second support element
Single mesh area.Ensure that compressed air can smoothly circulate, prevent gas block, cause circulation not smooth.
Any of the above item is preferably, and further includes the first fixator and the second fixator, and first fixator is set to
The top of the compressed-air filter, second fixator are set to the bottom of the compressed-air filter.It is comprehensive
Reinforcing compressed-air filter, make structure more firm.
Any of the above item is preferably, and first fixator and second fixator are identical structure.Reduce zero
The type of part can be produced in batches, and easy to process, cost is lower.
Any of the above item is preferably, and first fixator is approximately circular ring shape.
Any of the above item is preferably, and the section of first fixator is approximately " u "-shaped.
Any of the above item is preferably, and the " u "-shaped has a groove, and the groove is used to receiving or fixing described first
Support element, the second support element and filter core.Reduce the quantity using the fasteners such as screw, nut, simple in structure, easy processing, into
This is lower.
Any of the above item is preferably, and a side end face of first fixator also has at least one recess.Convenient for
The positioning and installation of fixing and compressed-air filter between one support element, the second support element and filter core.
Any of the above item is preferably, including claim 1-12 any one of them compressed-air filters.
Any of the above item is preferably, and further includes valve body, case, pressing plate, stud and the first nut；The valve body passes through spiral shell
Line is fixedly connected with the case；The stud prolongs axis across the compressed-air filter, and one end of the stud leads to
It crosses and is threadably secured on the valve body；The pressing plate has centre bore, is set in the top of the compressed-air filter, passes through
Threaded connection between first nut and the stud compresses the pressing plate and the compressed-air filter.
Any of the above item is preferably, and first seal is additionally provided between the valve body and the case.
Any of the above item is preferably, and boss, the boss and second fixator are also formed on the valve body
Inner wall is connected.The rational design feature using valve body and the second fixator reduces the quantity of parts, rationally utilizes valve
Body structure reduces processing cost.
Any of the above item is preferably, the valve body include inlet channel and exhaust passage, the inlet channel with it is described
The shortcomings that exhaust passage is arranged in parallel and homonymy is set, and structure size caused by reducing offside setting is big；The inlet channel
It is connected with the inside of the compressed-air filter；Exhaust is formed between the outer wall of the compressed-air filter and the case
Chamber, the exhaust passage are connected with the discharge chamber.
Any of the above item is preferably, and the aperture of the inlet channel and exhaust passage is 10-100mm.
Any of the above item is preferably, and the aperture of the inlet channel and exhaust passage is 25mm.
Any of the above item is preferably, and one end of the case is also fixedly connected with draining valve module.
Any of the above item is preferably, and the draining valve module includes pedestal, the second nut, connector, spool and swing handle；Institute
It is approximately "T"-shaped to state pedestal, is arranged in the case, and one end of the pedestal is formed with external screw thread, passes through second nut
It is fixed on one end of the case.
Any of the above item is preferably, and the connector is fixedly connected on the pedestal；The spool and the joint screw thread
Connection；The spool is fixedly connected with the swing handle.
Any of the above item is preferably, and second seal is additionally provided between the pedestal and the case.
A kind of compressed-air filter and its air filter of the utility model solve existing filtration device structure ruler
The technical issues of very little bigger than normal, processing difficulties, of high cost, and filter core lacks support, service life is short.It is lighter, easy to realize weight
Processing, amount of parts is less, cost is lower, more unobstructed, the circulation bigger of gas circulation, and filter core is made by supports support
Filter core is unlikely to deform when must filter the compressed air of big flow.
Description of the drawings
Fig. 1 is the forward sight structural representation according to an a kind of preferred embodiment of compressed-air filter of the utility model
Figure；
Fig. 2 is to illustrate according to a kind of cross-section structure of a preferred embodiment of compressed-air filter of the utility model
Figure；
Fig. 3 is the partial structural diagram according to an a kind of preferred embodiment of compressed-air filter of the utility model
A；
Fig. 4 is to illustrate according to a kind of stereochemical structure of a preferred embodiment of compressed-air filter of the utility model
Figure；
Fig. 5 is the preferred implementation according to a kind of air filter with compressed-air filter of the utility model
The cross-sectional view of example；
Fig. 6 is the preferred implementation according to a kind of air filter with compressed-air filter of the utility model
The partial structural diagram B of example；
Description of symbols in attached drawing：
10 compressed-air filters；
The first support elements of 10-1；The second support elements of 10-2；10-3 filter cores；The first fixators of 10-4；The second fixators of 10-5；
10-4-1 is recessed；
100 air filters；
11 valve bodies；12 cases；13 pressing plates；14 studs；15 first nuts；16 first seals；17 inlet channels；18 exhausts
Channel；19 discharge chambers；20 draining valve modules；21 second seals；
13-1 centre bores；
20-1 pedestals；The second nuts of 20-2；20-3 connectors；20-4 spools；20-5 swing handles.
Specific embodiment
The utility model in order to better understand is explained in detail the utility model with reference to specific embodiment,
It is clear that it is new without departing from this practicality of appended claims with retrofiting different modifications can be carried out to the utility model
Type broader spirit and scope.Therefore, following embodiment be have it is illustrative without the meaning of limitation.
Embodiment 1
As shown in Figs 1-4, a kind of compressed-air filter 10, including the first support element 10-1, the second support element 10-2 and
Filter core 10-3；The first support element 10-1 is set to the inside of the compressed-air filter 10；The second support element 10-
2 are set to the outside of the compressed-air filter 10, and be coaxially disposed with the first support element 10-1；First support
The filter core 10-3 is further fixed between part 10-1 and the second support element 10-2.Filter core 10-3 be supported part protection and
Strengthen, even if working long hours in pressure-air, can also realize prolonged work, maintain system worked well, reduce more
Change the cost of filter core 10-3.
The first support element 10-1 is prismatic net.
The second support element 10-2 is square grid.
The mesh of the first support element 10-1 and the mesh of the second support element 10-2 are staggered.Pressure can be extended
The path of contracting air reduces the burden of windage and reduction to system.
Single mesh of the area of the single mesh of the first support element 10-1 more than the second support element 10-2
Area.Ensure that compressed air can smoothly circulate, prevent gas block, cause circulation not smooth.
It further includes the first fixator 10-4 and the second fixator 10-5, the first fixator 10-4 is set to the compression
The top of air filter 10, the second fixator 10-5 are set to the bottom of the compressed-air filter 10.It is comprehensive
Reinforcing compressed-air filter 10, make structure more firm.
The first fixator 10-4 and the second fixator 10-5 is identical structure.The type of parts is reduced, it can
With batch production, easy to process, cost is lower.
The first fixator 10-4 is approximately circular ring shape.
The section of the first fixator 10-4 is approximately " u "-shaped.
The " u "-shaped has a groove, and the groove is used to fix the first support element 10-1, the second support element 10-2
With filter core 10-3.Reduce the quantity using the fasteners such as screw, nut, simple in structure, easy processing, cost is lower.
The recess 10-4-1 of a side end face three of the first fixator 10-4.Convenient for the first support element 10-1, second
The positioning and installation of fixing and compressed-air filter 10 between support element 10-2 and filter core 10-3.
As shown in Figure 5,6, a kind of air filter 100 includes the compressed-air filter of any of the above-described technical solution
10, further include valve body 11, case 12, pressing plate 13,14 and first nut 15 of stud；The valve body 11 passes through screw thread and the case
12 are fixedly connected；The stud 14 prolongs axis across the compressed-air filter 10, and one end of the stud 14 passes through spiral shell
Line is fixed on the valve body 11；The pressing plate 13 has centre bore 13-1, is set in the top of the compressed-air filter 10
Portion, by the threaded connection between first nut 15 and the stud 14, by the pressing plate 13 and the compressed air mistake
Filter 10 compresses.
First seal 16 is additionally provided between the valve body 11 and the case 12.
Boss is also formed on the valve body 11, the inner wall of the boss and the second fixator 10-5 is connected.
The rational design feature for utilizing 11 and second fixator 10-5 of valve body reduces the quantity of parts, rationally utilizes 11 knot of valve body
Structure reduces processing cost.
The valve body 11 includes inlet channel 17 and exhaust passage 18, and the inlet channel 17 and the exhaust passage 18 are flat
The shortcomings that row setting and homonymy setting, structure size caused by reducing offside setting is big；The inlet channel 17 and the pressure
The inside connection of contracting air filter 10；Discharge chamber is formed between the outer wall of the compressed-air filter 10 and the case 12
19, the exhaust passage 18 is connected with the discharge chamber 19.
The aperture of the inlet channel 17 and exhaust passage 18 is 25mm.
One end of the case 12 is also fixedly connected with draining valve module 20.
The draining valve module 20 includes pedestal 20-1, the second nut 20-2, connector 20-3, spool 20-4 and swing handle 20-
5；The pedestal 20-1 is approximately "T"-shaped, is arranged in the case 12, and one end of the pedestal 20-1 is formed with external screw thread, is led to
Cross one end that the second nut 20-2 is fixed on the case 12.
The connector 20-3 is fixedly connected on the pedestal 20-1；The spool 20-4 connects with the connector 20-3 screw threads
It connects；The spool 20-4 is fixedly connected with the swing handle 20-5.
Second seal 21 is additionally provided between the pedestal 20-1 and the case 12.
Embodiment 2
As shown in Figs 1-4, a kind of compressed-air filter 10, including the first support element 10-1, the second support element 10-2 and
Filter core 10-3；The first support element 10-1 is set to the inside of the compressed-air filter 10；The second support element 10-
2 are set to the outside of the compressed-air filter 10, and be coaxially disposed with the first support element 10-1；First support
The filter core 10-3 is further fixed between part 10-1 and the second support element 10-2.Filter core 10-3 be supported part protection and
Strengthen, even if working long hours in pressure-air, can also realize prolonged work, maintain system worked well, reduce more
Change the cost of filter core 10-3.
The first support element 10-1 is square grid.
The second support element 10-2 is prismatic net.
The mesh of the mesh of the first support element 10-1 and the second support element 10-2 substantially in the same horizontal line,
It is correspondingly arranged.It can ensure the support element that flows through that gas can be much smoother, reduce windage, reduce system burden.
Single mesh of the area of the single mesh of the first support element 10-1 equal to the second support element 10-2
Area.Ensure that compressed air can smoothly circulate, prevent gas block, cause circulation not smooth.
It further includes the first fixator 10-4 and the second fixator 10-5, the first fixator 10-4 is set to the compression
The top of air filter 10, the second fixator 10-5 are set to the bottom of the compressed-air filter 10.It is comprehensive
Reinforcing compressed-air filter 10, make structure more firm.
The first fixator 10-4 and the second fixator 10-5 is identical structure.The type of parts is reduced, it can
With batch production, easy to process, cost is lower.
The first fixator 10-4 is approximately circular ring shape.
The section of the first fixator 10-4 is approximately " u "-shaped.
The " u "-shaped has a groove, and the groove is used to receive the first support element 10-1, the second support element 10-2
With filter core 10-3.Reduce the quantity using the fasteners such as screw, nut, simple in structure, easy processing, cost is lower.
A side end face of the first fixator 10-4 also have there are one recess 10-4-1.Convenient for the first support element 10-1,
The positioning and installation of fixing and compressed-air filter 10 between second support element 10-2 and filter core 10-3.
As shown in Figure 5,6, a kind of air filter 100 includes the compressed-air filter of any of the above-described technical solution
10, further include valve body 11, case 12, pressing plate 13,14 and first nut 15 of stud；The valve body 11 passes through screw thread and the case
12 are fixedly connected；The stud 14 prolongs axis across the compressed-air filter 10, and one end of the stud 14 passes through spiral shell
Line is fixed on the valve body 11；The pressing plate 13 has centre bore 13-1, is set in the top of the compressed-air filter 10
Portion, by the threaded connection between first nut 15 and the stud 14, by the pressing plate 13 and the compressed air mistake
Filter 10 compresses.
First seal 16 is additionally provided between the valve body 11 and the case 12.
Boss is also formed on the valve body 11, the inner wall of the boss and the second fixator 10-5 is connected.
The rational design feature for utilizing 11 and second fixator 10-5 of valve body reduces the quantity of parts, rationally utilizes 11 knot of valve body
Structure reduces processing cost.
The valve body 11 includes inlet channel 17 and exhaust passage 18, and the inlet channel 17 and the exhaust passage 18 are flat
The shortcomings that row setting and homonymy setting, structure size caused by reducing offside setting is big；The inlet channel 17 and the pressure
The inside connection of contracting air filter 10；Discharge chamber is formed between the outer wall of the compressed-air filter 10 and the case 12
19, the exhaust passage 18 is connected with the discharge chamber 19.
The aperture of the inlet channel 17 and exhaust passage 18 is 10-100mm.
One end of the case 12 is also fixedly connected with draining valve module 20.
The draining valve module 20 includes pedestal 20-1, the second nut 20-2, connector 20-3, spool 20-4 and swing handle 20-
5；The pedestal 20-1 is approximately "T"-shaped, is arranged in the case 12, and one end of the pedestal 20-1 is formed with external screw thread, is led to
Cross one end that the second nut 20-2 is fixed on the case 12.
The connector 20-3 is fixedly connected on the pedestal 20-1；The spool 20-4 connects with the connector 20-3 screw threads
It connects；The spool 20-4 is fixedly connected with the swing handle 20-5.
Second seal 21 is additionally provided between the pedestal 20-1 and the case 12.
In addition, this product is used for the control of rail truck gas circuit, in vehicular pneumatic systems.Power is by being closed back
Compressed air in road is transmitted and is controlled.When requiring to carry out mechanical filter to compressed air, compressed-air filter is
The element designed to remove solid and liquid pollutant.
The important innovation of this product is：Using the valve body of big orifice structure, suitable for the air filtration system of demand big flow
System, and internal core is supported by a variety of stents so that filter core is unlikely to deform when filtering the compressed air of big flow.
The summary working method of the utility model：
1）, gas compression air enter from inlet end, pass through the channel of L-type so that the compressed air of entrance can L-shaped again
It is buffered in channel, will not directly impact filter core deforms filter core.After compressed air is by filter element filtering, via output channel
After export.
2）, have Manual draining valve at the top of filter device, can be controlled by rotating handle.
The operation principle of the utility model：
1）, compressed air valve inner is entered by inlet channel, compressed air flows through L-type inlet channel, and then compression is empty
Gas by the filter core among filter device carry out to inside compressed air dust, greasy dirt, steam, be filtered effect.Filtering
Filter core inside device is supported by stud in centre, and pressing plate, which pushes down filter core its filter core is enable to be fastened on, internal not to be loosened.Pressure
Contracting air flows out after filter element filtering via B outlet passageways so that the compressed air after filtering is exported from output terminal.
2）, draining valve module on filter device.It is to be connected by swing handle with spool for riveting.And spool and connector pass through
It is threadedly coupled.When rotating clockwise swing handle, the valve conical surface will form the conical surface with spool and reach hard sealing function.When counterclockwise
When rotating swing handle, the valve conical surface will move downward valve port opening and lead to air so that the steam discharge of valve inner.
The structure explanation of filter core：
1st, the structure of filter core is made of square grid, filter paper and prismatic net.Square grid（It is flexible）Filter paper is covered in outermost layer,
Filter paper is protected not expanded outwardly under the action of air-flow when in running order, inside passes through rhombus net（With hardness）To whole
A filter paper is played a supporting role.Upper and lower ends are fixed together parts to form one entirety of filter core by injecting glue.
2nd, air intake-exhaust specific size：This filter air inlet and the promoting menstruation of outlet are φ 25.
3rd, technique effect：This filter can be filtered under the air pressure of 10bar, can be effective by the filter core of this structure
Guarantee be not susceptible to deformation and failure.
It these are only the preferred embodiment of the utility model, be not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (15)
1. a kind of compressed-air filter, which is characterized in that including the first support element, the second support element and filter core；Described first
Support element is set to the inside of the compressed-air filter；Second support element is set to the compressed-air filter
Outside, and be coaxially disposed with first support element；Institute is further fixed between first support element and second support element
State filter core.
2. compressed-air filter according to claim 1, which is characterized in that first support element is prismatic net, circle
Any one of shape net and square grid.
3. compressed-air filter according to claim 2, which is characterized in that second support element is prismatic net, circle
Any one of shape net and square grid.
4. compressed-air filter according to claim 3, which is characterized in that the mesh of first support element with it is described
The mesh of second support element substantially in the same horizontal line, is correspondingly arranged.
5. compressed-air filter according to claim 3, which is characterized in that the mesh of first support element with it is described
The mesh of second support element is at least partly staggered.
6. compressed-air filter according to claim 4 or 5, which is characterized in that the single net of first support element
The area in hole is not less than the area of the single mesh of second support element.
7. compressed-air filter according to claim 6, which is characterized in that further include the first fixator and second and fix
Device, first fixator are set to the top of the compressed-air filter, and second fixator is set to the compression
The bottom of air filter.
8. compressed-air filter according to claim 7, which is characterized in that first fixator and described second is consolidated
Device is determined for identical structure.
9. compressed-air filter according to claim 8, which is characterized in that first fixator is approximately annulus
Shape.
10. compressed-air filter according to claim 9, which is characterized in that the section of first fixator is approximate
For " u "-shaped.
11. compressed-air filter according to claim 10, which is characterized in that the " u "-shaped has a groove, described
Groove is used to receiving or fixing first support element, the second support element and filter core.
12. compressed-air filter according to claim 11 a, which is characterized in that side end face of first fixator
Also there is at least one recess.
13. a kind of air filter, which is characterized in that filtered including claim 1-12 any one of them compressed air
Device.
14. air filter according to claim 13, which is characterized in that further include valve body, case, pressing plate, stud
With the first nut；The valve body is fixedly connected by screw thread with the case；The stud prolongs axis across the compressed air
Filter, and one end of the stud is threadably secured on the valve body；The pressing plate has centre bore, is set in described
The top of compressed-air filter, by the threaded connection between first nut and the stud, by the pressing plate and institute
State compressed-air filter compression.
15. air filter according to claim 14, which is characterized in that also set between the valve body and the case
There is first seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721496500.4U CN207507143U (en) | 2017-11-10 | 2017-11-10 | A kind of compressed-air filter and its air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721496500.4U CN207507143U (en) | 2017-11-10 | 2017-11-10 | A kind of compressed-air filter and its air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207507143U true CN207507143U (en) | 2018-06-19 |
Family
ID=62536542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721496500.4U Active CN207507143U (en) | 2017-11-10 | 2017-11-10 | A kind of compressed-air filter and its air filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN207507143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648942A (en) * | 2017-11-10 | 2018-02-02 | 瑞立集团瑞安汽车零部件有限公司 | A kind of compressed-air filter and its air filter |
| CN113301976A (en) * | 2019-01-09 | 2021-08-24 | 克诺尔商用车制动系统有限公司 | Method for connecting a filter to a component and system consisting of a filter and a component |
-
2017
- 2017-11-10 CN CN201721496500.4U patent/CN207507143U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648942A (en) * | 2017-11-10 | 2018-02-02 | 瑞立集团瑞安汽车零部件有限公司 | A kind of compressed-air filter and its air filter |
| CN113301976A (en) * | 2019-01-09 | 2021-08-24 | 克诺尔商用车制动系统有限公司 | Method for connecting a filter to a component and system consisting of a filter and a component |
| CN113301976B (en) * | 2019-01-09 | 2023-09-26 | 克诺尔商用车制动系统有限公司 | Method for connecting a filter to a component and system comprising a filter and a component |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210702 Address after: No.2666, Development Zone Avenue, Ruian Economic Development Zone, Wenzhou City, Zhejiang Province, 325200 Patentee after: Zhejiang Ruili air compressor equipment Co.,Ltd. Address before: Ruian City, Wenzhou City, 325200 Zhejiang Province Economic Development Zone No. 1169 Meng Lu Patentee before: Ruili Group Ruian Auto Parts Co.,Ltd. |
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| TR01 | Transfer of patent right |