CN208651662U - A kind of lift anti-friction valve with guard circle - Google Patents
A kind of lift anti-friction valve with guard circle Download PDFInfo
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- CN208651662U CN208651662U CN201821034119.0U CN201821034119U CN208651662U CN 208651662 U CN208651662 U CN 208651662U CN 201821034119 U CN201821034119 U CN 201821034119U CN 208651662 U CN208651662 U CN 208651662U
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Abstract
A kind of lift anti-friction valve with guard circle, including valve body and valve deck, it is clipped between valve body and valve deck and is provided with valve component, valve inner is provided with protection band, valve deck is internally provided with flap component, flap component is in contact in valve wide open with protection band, valve deck lower end is internally provided with the cage ring and groups of springs for realizing live loaded, the entrance side of valve deck upper end circulation passage is provided with stuffing-box, the terminal pad being connected with executing agency and collecting bin are separately provided at left and right sides of valve deck upper end, flap component is in low level after valve is opened, and on the stand in valve body, when valve is closed, flap component moves on to top, cone is pressed in the cage ring in pendant position, although there is no be in contact the sealing cone of flap component with valve seat, but medium has been blocked at this time, the utility model avoids being washed away by medium, it improves Valve be used for a long time after sealing grade, extend service life.
Description
Technical field
The utility model relates to the valves of the conveying granule medium technical field such as petroleum, chemical industry, electric power, metallurgy, especially relate to
And a kind of lift anti-friction valve with guard circle.
Background technique
In recent years, the industry developments such as domestic petroleum, chemical industry, electric power are swift and violent, with produce silicon powder, industrial chemicals, iron ore powder,
The new raw materials such as the raw material such as micro mist carbon, cement and engineering plastics, fine ceramics, all industries that composite material is representative, all exist
Produce raw material, intermediate products or the final products of the various particles of huge number.These being completed of granular materials, rationally
The mode of movement using line gas changed, and most important in these line gas conveying equipments is exactly valve arrangement, together
When, it is most rambunctious with regard to metal particles fluid in the various fluids of valve control, compared with conveying gas and liquid medium, make
Following critical conditions should be met for particle valve: (1) sealing surface should have excellent wear-resisting, flushing resistance.(2) channel and valve body
Inner wall surface is smooth, also needs to do hardened wear-resistant layer processing when necessary.(3) using the structure that can prevent particle from entering sealing surface.(4) adopt
With the structure for not generating particle packing.(5) the measure for preventing sliding surface card master to be had.(6) holding using enough torques (or thrust)
Row mechanism is operated, can opening/shutting valve nimbly and freely.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of liftings with guard circle
Formula anti-friction valve is applied in particle transportation system as the stop valve of medium, and the sealing surface of flap and valve seat can be protected
Shield, avoids being washed away by medium, improves the sealing grade after valve is used for a long time, extends service life.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of lift anti-friction valve with guard circle, including valve body 1 and valve deck 2, are clipped between valve body 1 and valve deck 2 and are arranged
There is valve component 3, valve body 1 is internally provided with protection band 5, and valve deck 2 is internally provided with flap component 6, and flap component 6 is complete in valve
It being in contact when opening with protection band 5,2 lower end of valve deck is internally provided with the cage ring 7 and groups of springs 8 for realizing live loaded,
The entrance side of 2 upper end circulation passage of valve deck is provided with stuffing-box 202, is separately provided for and holds at left and right sides of 2 upper end of valve deck
The connected terminal pad 201 of row mechanism 12 and collecting bin 203, the protection band 5 are annular, and truncation surface is S type structure, valve body 1 with
Protection band 5 forms annular spherical crown channel.
The valve cup ring 301 of seat ring 302 and outside of the valve component 3 including inside, valve cup ring 301 and seat ring
Annular groove is arranged in 302 contact surfaces, and 301 side radial position of valve cup ring is provided with the blow valve port for outside air inlet, seat ring
The uniformly distributed several holes in 302 outer circle borders, 302 sealing surface surfacing hard alloy of seat ring.
2 lower end of valve deck is internally provided with groove, and inside grooves are provided with cage ring 7 and groups of springs 8, groups of springs 8
It is installed on the top of cage ring 7,7 inner wall of cage ring and the cooperation of 9 outer circle of positioning sleeve position.
The positioning sleeve 9 is installed in the groove of 2 lower end of valve deck by screw thread, 9 inner-wall spraying hard alloy of positioning sleeve.
The valve component 3 and valve body 1 and 2 contact portion of valve deck are provided with gasket seal 4.
In the flap component 6, including valve rod 602, lower end are T-type structure, and valve rod 602 is installed on cone from side
Keep in 601 T-slot and between each other the gap of unilateral 1-2mm, the T-slot bottom of the valve rod 602 and cone 601
Contact position is set as spherical structure, and cone 601 is positioned by isolation board 604 and, cone 601 bottom fixed with fastening stud 606
Portion is provided with the valve clack sealing ring 603 to bottom positioning, and cone 601 is fixed by pressing plate 605 and fastening stud 607, institute
The 602 surface coated with hard alloy of valve rod stated, 603 sealing surface surfacing hard alloy of valve clack sealing ring, isolation board 604 and medium
The surface coated with hard alloy of contact.
For the valve deck 2 with valve body 1 by Stud connection, fluted, the groove upper end setting is arranged in entrance side for valve deck 2
There is stuffing-box 202, realize the sealing of valve rod 602 inside valve deck 2 by filler group 10, radial direction is provided with blow valve port, valve deck 2
Circulation passage internal spray hard alloy.
10 lower end of filler group is provided with positioning shaft sleeve 11, and blade construction is arranged in 11 lower end of positioning shaft sleeve, described fixed
Position 11 inner wall surfacing hard alloy of axle sleeve.
5 annular side of protection band is provided with 3-5 reinforcing rib and is connected to 1 inner wall of valve body.
The executing agency 12 is attached with valve deck 2 by the seam allowance that terminal pad 201 is arranged.
5 depth of protection band is greater than the depth of flap component 6.
The valve body 1 is spherical structure.
The executing agency 12 be it is pneumatic, electronic, surge or solution-air, electric-liquid linkage actuating mechanism.
The utility model has the beneficial effects that
Valve body 1 is spherical structure, and when valve wide open, the annular spherical crown that granule medium flows through valve body 1 and protection band 5 is formed is logical
Road, runner smoothly without dead angle, have self-cleaning function, can prevent accumulation of the medium in valve chamber.
1 inner cavity coated with hard alloy of valve body, hardness can reach HRC60 or more, improves wear-resisting, the abrasion resistance of valve chamber
Can, improve valve service life.
Protection band 5 is set to inside valve body 1 by 3-5 reinforcing rib, in valve wide open, flap component 6 and protection band 5
It is in contact, valve clack sealing ring 603 is located at the low level of protection band 5, and granule medium can fill up 5 whole region of protection band, and medium only can
Charge and attack on the dielectric layer of accumulation, without to valve clack sealing ring 603 cause it is any wash away, thus to valve clack sealing ring 603 into
It has gone protection, has extended valve service life.
Valve component 3 is Combination Welding part, and 302 sealing surface surfacing hard alloy of seat ring, hardness can reach HRC60,
Hard alloy layer thickness is not less than 2mm after machining, improves wear-resisting flushing resistance.
The blow valve port of valve component 3 is set as 301 outside air inlet of valve cup ring and enters back into valve by the annular groove of valve cup ring 301
The uniformly distributed several holes in 302 outer circle border of seat ring, carry out whole purging to seat ring 302 and valve clack sealing ring 603.It is avoiding
While partial admission may damage trim, it can also accomplish no dead zone purging.
In flap component 6,602 surface coated with hard alloy of valve rod, while improving wear-resisting, media-resistant performance of flushing, also
It can prevent the corrosion being likely to occur between valve rod and filler.Lower end is T-type structure, is pacified from cooperating with the T-slot of cone 601
The gap for filling and keeping unilateral 1-2mm, the spherical surface universal structure with the T-slot bottom contact position of cone 601, can keep valve
During bar elevating movement, the deviation of 602 concentricity of valve rod is compensated again, prevents stuck, guarantee during valve opening and closing
Flap component 6 can easily match with valve component 3.
603 sealing surface surfacing hard alloy of valve clack sealing ring, hardness can reach HRC60, hard alloy after machining
Thickness degree is not less than 2mm, improves wear-resisting, flushing resistance.
The surface coated with hard alloy of isolation board 604 and media contact, hardness can reach HRC60 or more, prevents medium from rushing
Brush damages isolation board.
9 inner-wall spraying hard alloy of positioning sleeve, prevents medium from washing away to it and damages, and outer circle and 7 inner hole of cage ring are fixed
Position cooperation, guarantee cage ring 7 under the action of groups of springs 8 in the lifting process of flap component 6 without deviate.Positioning
It covers 9 lower ends and 7 contact site of cage ring is set as blade construction, prevent granule medium from piercing guide surface, improve guiding accuracy.
11 inner wall surfacing hard alloy of positioning shaft sleeve improves the wearability between valve rod 602,11 lower end of positioning shaft sleeve
Blade construction is set, prevents the granule medium being bonded on valve rod to be lifted into stuffing-box with valve rod, influences filler group 10
Sealing.
By Stud connection, gasket seal 4, which is respectively adopted, with valve component 3 prevents from leaking for valve deck 2 and valve body 1.
Stuffing-box 202 is provided on the left of 2 upper end of valve deck, inside realizes the sealing of valve rod 602, radial direction side by filler group 10
To purge hole is provided with, preventing granule medium from piercing stuffing-box influences the sealing of filler group 10.
It is provided with collecting bin 203 on the right side of 2 upper end of valve deck, when medium flows through valve deck 2, medium is first piled in collecting bin 203, just
Often medium washes away the dielectric layer for acting on collecting bin 203 completely when operation, can minimize to washing away for 2 inner wall of valve deck.
Executing agency 12 is positioned in such a way that terminal pad 201 is using seam allowance with valve deck 2, guarantees executing agency's operation
It is smooth and stable when valve.
In the utility model embodiment, apparatus structure is simple, convenient disassembly, to facilitate maintenance maintenance.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the lift anti-friction valve provided by the embodiment of the utility model with guard circle.
Fig. 2 is A point structure partial enlargement diagram in Fig. 1.
Fig. 3 is that solid is split at the valve component of the lift anti-friction valve provided by the embodiment of the utility model with guard circle
Structural schematic diagram.
Fig. 4 is stereochemical structure at the valve component of the lift anti-friction valve provided by the embodiment of the utility model with guard circle
Schematic diagram.
Fig. 5 is the flap component installation structure signal for the lift anti-friction valve with guard circle that utility model embodiment provides
Figure.
Wherein: 1- valve body, 2- valve deck, 201- terminal pad, 202- stuffing-box, 203- collecting bin, 3- valve component, 301-
Valve cup ring, 302- seat ring, 4- gasket seal, 5- protection band, 6- flap component, 601- cone, 602- valve rod, 603- flap
Sealing ring, 604- isolation board, 605- pressing plate, 606,607- fastening stud, 7- cage ring, 8- groups of springs, 9- positioning shaft sleeve, 10-
Filler group, 11- positioning shaft sleeve, 12- actuator.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, the utility model embodiment provides a kind of lift anti-friction valve with guard circle, including valve body
1 with valve deck 2, be clipped between valve body 1 and valve deck 2 and be provided with valve component 3, valve component 3 is by seat ring 302 and valve cup ring 301
Composition, valve component 3 and valve body 1 and 2 contact portion of valve deck are provided with gasket seal 4, and valve body 1 is internally provided with protection band 5, valve
Valve component 6 is in contact in valve wide open with protection band 5, flap component 6 by cone 601, valve rod 602, valve clack sealing ring 603,
Isolation board 604, pressing plate 605, fastening stud 606,607 form.2 lower end of valve deck is internally provided with groove, cage ring 7, groups of springs
8 are installed in the groove of valve deck lower end, realize live loaded, and positioned by positioning sleeve 9,2 upper end valve rod hole of valve deck is logical
It crosses filler group 10 and realizes valve stem seal, 10 lower end of filler group is provided with positioning shaft sleeve 11.2 top of valve deck is provided with terminal pad 201,
Executing agency 12 is connected by terminal pad 201 with valve deck, and the operation of valve opening and closing is carried out.
Valve body 1 is spherical structure, and granule medium flows through the annular spherical crown channel of valve body 1 and the formation of protection band 5, and runner is smooth
Without dead angle, there is self-cleaning function, accumulation of the medium in valve chamber can be prevented.Body cavity coated with hard alloy, hardness can
Reach HRC62 or more, is fully able to tolerance granule medium and is washed away caused by valve body, improve wear-resisting, the abrasion resistance of valve chamber
Can, improve valve service life.
In order to realize that cage ring 7 can smoothly carry out the isolation features of granule medium during valve opening and closing, without
There is bite phenomenon.9 inner-wall spraying hard alloy of positioning sleeve, prevents medium from washing away to it and damages, in outer circle and cage ring 7
Hole location fit, guarantee cage ring 7 under the action of groups of springs 8 in the lifting process of flap component 6 without deviate.
9 lower end of positioning sleeve and 7 contact site of cage ring are set as blade construction, prevent granule medium from piercing guide surface, improve guiding essence
Degree.
In order to realize the accurate guide function of valve rod and to the scraping function of material, while improving filler service life.It is fixed
Position 11 inner wall surfacing hard alloy of axle sleeve, improves the wearability between valve rod 602, and scraper knot is arranged in 11 lower end of positioning shaft sleeve
Structure prevents the granule medium being bonded on valve rod to be lifted into stuffing-box with valve rod, influences the sealing of filler group 10.
By Stud connection, gasket seal 4, which is respectively adopted, with valve component 3 prevents from leaking for valve deck 2 and valve body 1.
It is provided with collecting bin 203 on the right side of 2 upper end of valve deck, when medium flows through valve deck 2, medium is first piled in collecting bin 2, normally
Medium washes away the dielectric layer for acting on collecting bin 2 completely when operation, can minimize to washing away for 2 inner wall of valve deck.
Stuffing-box 202 is provided on the left of 2 upper end of valve deck, inside realizes the sealing of valve rod 602, radial direction side by filler group 10
To purge hole is provided with, preventing granule medium from piercing stuffing-box 202 influences the sealing of filler group 10.
Executing agency 12 is positioned in such a way that terminal pad 201 is using seam allowance with valve deck 2, guarantees executing agency's operation
It is smooth and stable when valve.
It is as shown in Figure 3, Figure 4: in order to avoid valve sealing face cementing medium, sealing surface Particulate Inclusion when valve being caused to close
Medium causes valve that can not completely close, and valve component 3 is set as Combination Welding part, and 302 sealing surface surfacing hard of seat ring closes
Gold, hardness can reach HRC60, and hard alloy layer thickness is not less than 2mm after machining, improve wear-resisting flushing resistance.
In order to realize the complete purging of valve sealing face, improves efficiency, reduce and purged for a long time to the damage of valve internals bring, valve seat
The blow valve port of component 3 is set as 301 outside air inlet of valve cup ring, by the annular groove of valve cup ring 301, enters back into 302 border of seat ring
Uniformly distributed several holes carry out whole purging to valve seat ring 302 and valve clack sealing ring 603.Avoiding partial admission's damage
While trim, it can also accomplish no dead zone purging.
As shown in Figure 5: the bite that valve internals are likely to occur in use in order to prevent improves valve opening and closing effect
Rate reduces the operating time, while improving the service life of the internals such as valve rod.602 surface coated with hard alloy of valve rod, hardness are reachable
To HRC62 or more, while improving wear-resisting, media-resistant performance of flushing, moreover it is possible to prevent from being likely to occur between valve rod 602 and filler
Corrosion, lower end is T-type structure, the gap of unilateral 1-2mm is coupled and kept with the T-slot of cone 601, with cone
The spherical surface universal structure of 601 T-slot bottom contact position setting, during 602 elevating movement of valve rod can be kept, to coaxial
The deviation of degree is compensated again, prevent it is stuck during valve opening and closing, guarantee flap component 6 can easily with 3 phase of valve component
It coincide.
603 sealing surface surfacing hard alloy of valve clack sealing ring, hardness can reach HRC60, hard alloy after machining
Thickness degree is not less than 2mm, improves wear-resisting, flushing resistance.
The surface coated with hard alloy of isolation board 604 and media contact, hardness can reach HRC60 or more, prevents medium from rushing
Brush damages isolation board.
As shown in Fig. 1 Fig. 5: blow valve port is flanked outside seat ring 302, when valve is closed, in 6 lifting process of flap component,
Isolation board 604 first contacts cage ring 7, blocks medium, at this point, the blow valve port of valve cup ring 301 carries out gas purging, removing is attached to
Granule medium on seat ring 302 and valve clack sealing ring 603, after the completion of purging, flap component 6 continues to lift up closing valve, directly
Until valve cup ring 301 and valve clack sealing ring 603 complete gluing, sealing.
Direction that the utility model is previously mentioned and position term for example [on], [under], [preceding], [rear], [left side], [right side],
[interior], [outer], [top], [bottom], [side] etc. are only direction or position with reference to attached drawing.Therefore, the direction and position used
Setting term is rather than the limitation to scope of protection of the utility model to illustrate and understand the utility model.
Utility model works principle:
The purpose of this utility model is to provide a kind of lift anti-friction valve with guard circle, makees in particle transportation system
It is applied for the stop valve of medium.For flap component 6 in low level, and on the stand in valve body 1, this can protect flap after valve is opened
Sealing ring 603 is not by the souring of neighboring particles, and when valve is closed, flap component 6 moves on to top, and cone 1 is pressed in sagging
In the cage ring of position, although the sealing cone of flap component 6, not being in contact with seat ring 302, medium has been at this time
It is blocked, in the valve seat for being purged to sealing surface and then flap being made to head into 1 top of valve body.Implement the utility model
Embodiment, when passing through the valve, the sealing surface of flap component 6 and seat ring 302 can be protected granule medium, avoid by
Medium washes away, and improves the sealing grade after valve is used for a long time, extends service life.
Protection band 5 is set to the spherical valve body inside center of valve body 1 by 3-5 reinforcing rib.
In valve wide open, flap component 6 is in contact with protection band 5, at this point, valve clack sealing ring 603 is located at protection band 5
Low level, valve opening in place after, granule medium can be deposited in the gap of protection band 5 and flap component 6, by valve clack sealing ring
603 sealing surface is completely covered, at this point, medium can only charge and attack on the dielectric layer of accumulation, without to valve clack sealing ring 603
Sealing surface cause it is any wash away, to be protected to valve clack sealing ring 603, can significantly extend valve service life.It can
With understanding, 5 depth of protection band is greater than the height of flap component 6, actual size can by engineering staff according to actual needs into
Row determines after calculating；
When valve is closed, in 6 lifting process of flap component, isolation board 604 first contacts cage ring 7, continues in groups of springs 8
Under pressing force, medium is blocked.At this point, the blow valve port in 301 outside of valve cup ring is opened, gas purging is carried out, removing is attached to valve seat
Circle 302 and the granule medium adhered on valve clack sealing ring 603, after the completion of purging, flap component 6 continues to lift up closing valve, directly
Until seat ring 302 and valve clack sealing ring 603 complete gluing, sealing.It is understood that the size and purging of blow valve port
Time can be determined by engineering staff according to by the density of medium and the practical operation situation of valve.
Claims (10)
1. a kind of lift anti-friction valve with guard circle, which is characterized in that including valve body (1) and valve deck (2), be clipped in valve body (1)
It is provided between valve deck (2) valve component (3), valve body (1) is internally provided with protection band (5), and valve deck (2) is internally provided with valve
Valve component (6), flap component (6) are in contact in valve wide open with protection band (5), setting inside the valve deck (2) lower end
There are the cage ring (7) for realizing live loaded and groups of springs (8), the entrance side of valve deck (2) upper end circulation passage is provided with stuffing-box
(202), it is separately provided for the terminal pad (201) being connected with executing agency (12) at left and right sides of valve deck (2) upper end and gathers materials
Storehouse (203), the protection band (5) are ring structure, and truncation surface is S type structure, the annular that valve body (1) and protection band (5) are formed
Spherical crown channel.
2. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the valve component
(3) include inside seat ring (302) and outside valve cup ring (301), seat ring (302) sets with valve cup ring (301) contact surface
Annular groove is set, valve cup ring (301) side radial position is provided with the blow valve port for outside air inlet, seat ring (302) outer circle
The uniformly distributed several holes in border, seat ring (302) sealing surface surfacing hard alloy.
3. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the valve deck (2)
Lower end is internally provided with groove, and inside grooves are provided with cage ring (7) and groups of springs (8), and groups of springs (8) is installed on cage ring
(7) top, the cage ring (7) inside are positioned with the cooperation of positioning sleeve (9) outer circle；
The positioning sleeve (9) is installed in the groove of valve deck (2) lower end by screw thread, positioning sleeve (9) inner-wall spraying hard alloy.
4. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the valve component
(3) valve body (1) and valve deck (2) contact portion is provided with gasket seal (4).
5. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the flap component
(6) in, including valve rod (602), lower end are T-type structure, and valve rod (602) is out of, side is installed on cone (601) T-slot
And the gap of unilateral 1-2mm is kept between each other, the valve rod (602) and the T-slot bottom contact position of cone (601) are set
It is set to spherical structure, cone (601) is positioned by isolation board (604) and, cone (601) bottom fixed with fastening stud (606)
It is provided with the valve clack sealing ring (603) to bottom positioning, cone (601) is consolidated by pressing plate (605) and fastening stud (607)
Fixed, described valve rod (602) surface coated with hard alloy, valve clack sealing ring (603) sealing surface surfacing hard alloy, isolation board
(604) with the surface coated with hard alloy of media contact.
6. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the valve deck (2) with
Valve body (1) is by Stud connection, and valve deck (2) is fluted in entrance side setting, and the groove upper end is provided with stuffing-box (202),
The sealing of valve rod (602) is realized inside valve deck (2) by filler group (10), radial direction is provided with blow valve port, valve deck (2) circulation
Channel interior coated with hard alloy.
7. a kind of lift anti-friction valve with guard circle according to claim 6, which is characterized in that the filler group
(10) lower end is provided with positioning shaft sleeve (11), and blade construction, positioning shaft sleeve (11) inner wall is arranged in positioning shaft sleeve (11) lower end
Surfacing hard alloy.
8. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the protection band
(5) annular side is provided with 3-5 reinforcing rib and is connected to valve body (1) inner wall；
Protection band (5) depth is greater than the depth of flap component (6).
9. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the valve body
It (1) is spherical structure.
10. a kind of lift anti-friction valve with guard circle according to claim 1, which is characterized in that the executing agency
(12) connect with valve deck (2) by the seam allowance that terminal pad (201) is arranged, the executing agency (12) be it is pneumatic, electronic, surge
Or solution-air, electric-liquid linkage actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821034119.0U CN208651662U (en) | 2018-07-02 | 2018-07-02 | A kind of lift anti-friction valve with guard circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821034119.0U CN208651662U (en) | 2018-07-02 | 2018-07-02 | A kind of lift anti-friction valve with guard circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208651662U true CN208651662U (en) | 2019-03-26 |
Family
ID=65783076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821034119.0U Active CN208651662U (en) | 2018-07-02 | 2018-07-02 | A kind of lift anti-friction valve with guard circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208651662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626421A (en) * | 2018-07-02 | 2018-10-09 | 陕西瑞莱自控设备有限公司 | A kind of lift anti-friction valve with guard circle |
-
2018
- 2018-07-02 CN CN201821034119.0U patent/CN208651662U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626421A (en) * | 2018-07-02 | 2018-10-09 | 陕西瑞莱自控设备有限公司 | A kind of lift anti-friction valve with guard circle |
| CN108626421B (en) * | 2018-07-02 | 2024-04-12 | 陕西瑞莱自控设备有限公司 | Lifting type wear-resistant valve with protection ring |
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