CN208474090U - A kind of Vertical Combination valve group - Google Patents
A kind of Vertical Combination valve group Download PDFInfo
- Publication number
- CN208474090U CN208474090U CN201821013627.0U CN201821013627U CN208474090U CN 208474090 U CN208474090 U CN 208474090U CN 201821013627 U CN201821013627 U CN 201821013627U CN 208474090 U CN208474090 U CN 208474090U
- Authority
- CN
- China
- Prior art keywords
- valve
- installation space
- road hole
- secondary sealing
- road
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000009434 installation Methods 0.000 claims abstract description 41
- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 238000003032 molecular docking Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 38
- 230000006872 improvement Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910000754 Wrought iron Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides a kind of Vertical Combination valve group comprising: cylinder body is equipped with the installation space being connected with access road equipped with the access road for being located at bottom vertically in the middle part of cylinder body；Secondary sealing letter is equipped with connection space vertically in the middle, is equipped with the wing passage close to secondary sealing letter in cylinder body side；Inlet valve is mounted in installation space and close to access road, and inlet valve includes the sucking valve road hole being connected to respectively with access road, connection space, is movably installed with bottom spool at sucking valve road hole；Dump valve is mounted in installation space and is located above secondary sealing letter, and dump valve includes the discharge valve road hole being connected to connection space, is discharged at valve road hole exits and is connected with export pipeline, is movably installed with upper valve core at discharge valve road hole；Sealed letter body, partial insertion cylinder body and and secondary sealing letter docking.This Vertical Combination valve group has the advantages that cylinder body not easy to crack, good seal performance, can directly find the interior sealing situation of cylinder.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of Vertical Combination valve group.
Background technique
Reciprocating pump is to provide the conveying machinery of energy to liquid directly in the form of pressure energy by the reciprocating motion of piston,
Including combining valve group, it is adapted to all kinds of media and pressure, current combination valve group is mostly horizontal type structure, bears alternating load
Region contacted with cylinder body, liquid cylinder is easy cracking, and current pump can not directly judge the sealing situation in cylinder, need from
Other path estimating processing, and dismounting is more complicated, and it is more inconvenient to process.In this regard, the utility model designs a kind of cylinder body
Not easy to crack, good seal performance, the Vertical Combination valve group that can directly find sealing situation in cylinder.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, propose a kind of cylinder body it is not easy to crack,
Good seal performance, the Vertical Combination valve group that can directly find sealing situation in cylinder.
The purpose of this utility model can be realized by the following technical scheme: a kind of Vertical Combination valve group, comprising:
Cylinder body, equipped be located at bottom access road, in the middle part of cylinder body vertically be equipped with installation space, the access road with
Installation space is connected；
Secondary sealing letter is removably mounted in the middle part of installation space, connection space is equipped with vertically in the middle part of secondary sealing letter, in cylinder
Side portion is equipped with the wing passage close to secondary sealing letter；
Inlet valve is removably mounted in installation space and close to access road, and the inlet valve is located under secondary sealing letter
Side, the inlet valve includes the sucking valve road hole being connected to respectively with access road, connection space, the activity peace at sucking valve road hole
Equipped with bottom spool, sucking valve road hole and connection space can be disconnected or are connected to after the bottom spool movement；
Dump valve is removably mounted in installation space and is located above secondary sealing letter, and the dump valve includes and connection
The discharge valve road hole of space connection, is connected with export pipeline at the discharge valve road hole exits, and activity is pacified at discharge valve road hole
Equipped with upper valve core, discharge valve road hole and export pipeline can be disconnected or are connected to after the upper valve core movement；
Sealed letter body, partial insertion cylinder body and and secondary sealing letter docking.
The inlet valve includes being removably mounted under installation space bottom as a further improvement of the utility model,
Valve seat, the sucking valve road hole are set on lower valve base, and the bottom spool is movably arranged on lower valve base and partial insertion inlet valve
Road hole, the lower spring resetted after bottom spool exposed portion is arranged with for its movement.
As the further improvement of the utility model, lower shell, the lower shell point are also equipped in installation space
It is not connect closely with lower valve base, secondary sealing letter, the bottom spool exposes the part of lower valve base and lower spring is respectively positioned on lower shell packet
In enclosure, and the lower positioning ring above bottom spool is installed in lower shell, the lower spring be connected to bottom spool and under
Between positioning ring.
The dump valve includes the upper valve being removably mounted in installation space as a further improvement of the utility model,
Seat, the discharge valve road hole are set on upper valve base, and the upper valve core is movably arranged on upper valve base and partial insertion discharge valve road
Hole, the upper spring resetted after upper valve core exposed portion is arranged with for its movement.
As the further improvement of the utility model, valve pressing sleeve and upper cylinder are also equipped with by top position in installation space
Body, the upper shell are closely connect with valve pressing sleeve, upper valve base respectively, and the part of the upper valve core exposing upper valve base and upper spring are equal
In the upper shell ring of encirclement, and the upper positioning ring above upper valve core is installed in upper shell, the upper spring connection
Between upper valve core and upper positioning ring.
As the further improvement of the utility model, closely it is provided at the top of installation space and is connected with valve pressing sleeve upper end
Chock plug, the chock plug outer wall, upper valve base, lower valve base outer wall are provided with sealing element between installation space inner wall respectively.
The valve face of the lower valve base/upper valve base is and bottom spool/upper valve core phase as a further improvement of the utility model,
Connect and be used to control the joint face structure of on-off, the valve face can be made into the conical surface, spherical surface, plane it is therein any one.
Based on the above-mentioned technical proposal, the utility model embodiment at least can produce following technical effect:
1, this Vertical Combination valve group integral structure layout is compact, reasonable, good seal performance, can directly find sealing in cylinder
Situation, valve block structure use vertical installation, and valve return is timely, good seal performance, and volumetric efficiency is high；Inlet valve is under inlet opening
Portion, intake performance are good；The part for bearing alternating load is sealed letter body, secondary sealing letter, and this case is especially provided with secondary sealing letter knot
Structure, so that the region for bearing alternating load is not contacted with cylinder body, liquid cylinder is not subject to alternating load, and liquid cylinder is not easy to crack, valve
Structure mixes high pressure liquid cylinder, sealed letter body, secondary sealing letter composition fluid power end pieces again, and the structure fluid end is applied widely,
Pump efficiency is high.
2, it currently, conventional pump can not directly judge the sealing situation in cylinder, needs from the processing of other path estimating, and this
Vertical Combination valve group can directly be found；In the case where assembly is unreasonable, gasket does not install, from liquid cylinder wing passage just
It can be found that；If there is liquid outflow at liquid cylinder wing passage, illustrates that gasket does not install or be not mounted to position, need to adjust again
It is whole；Pump operation for a period of time after, can also from this place judge gasket whether sealed reliable.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is the cross-sectional view of one preferred embodiment of the utility model.
In figure, 100, cylinder body；110, access road；120, wing passage；200, inlet valve；210, lower valve base；211, it sucks
Valve road hole；220, bottom spool；230, lower spring；240, lower shell；250, lower positioning ring；260, valve face；300, dump valve；310,
Upper valve base；311, valve road hole is discharged；320, upper valve core；330, upper spring；340, upper shell；350, upper positioning ring；400, valve pressure
Set；500, chock plug；600, sealing element；700, sealed letter body；800, secondary sealing letter；810, connection space.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Below with reference to Fig. 1, technical scheme provided by the present invention will be described in more detail.
As shown in Figure 1, this Vertical Combination valve group includes:
Cylinder body 100 is equipped with installation space at 100 middle part of cylinder body equipped with the access road 110 for being located at bottom vertically, described
Access road 110 is connected with installation space；
Secondary sealing letter 800 is removably mounted in the middle part of installation space, and it is empty to be equipped with connection vertically at 800 middle part of secondary sealing letter
Between 810,100 side of cylinder body be equipped with close to secondary sealing letter 800 wing passage 120；
Inlet valve 200, is removably mounted in installation space and close access road 110, the inlet valve 200 are located at pair
800 lower section of sealed letter, the inlet valve 200 include the sucking valve road hole being connected to respectively with access road 110, connection space 810
211, bottom spool 220 is movably installed at sucking valve road hole 211, the bottom spool 220 can disconnect or be connected to sucking after acting
Valve road hole 211 and connection space 810；
Dump valve 300 is removably mounted in installation space and is located at 800 top of secondary sealing letter, and the dump valve 300 wraps
The discharge valve road hole 311 being connected to connection space 810 is included, 311 exit of discharge valve road hole is connected with export pipeline, is arranging
Upper valve core 320 is movably installed at valve road hole 311 out, the upper valve core 320 can disconnect or be connected to discharge valve road hole 311 after acting
And export pipeline；
Sealed letter body 700, partial insertion cylinder body 100 are simultaneously docked with secondary sealing letter 800.
In the present case, it is equipped with the rod iron insert port that can be docked with wing passage 120 preferably on 800 side wall of secondary sealing letter, makes
Its position can be twisted by rod iron insert port and be adjusted to correct position.
This Vertical Combination valve group integral structure layout is compact, reasonable, good seal performance, can directly find to seal feelings in cylinder
Condition.Concretely, valve block structure is compact, and using vertical installation, valve return is timely, good seal performance, and volumetric efficiency is high；Inlet valve
200 in inlet opening lower part, and intake performance is good；The part for bearing alternating load is sealed letter body 700, secondary sealing letter 800, and this case is special
Not She Zhiliao secondary sealing letter structure 800 so that bear alternating load region do not contacted with cylinder body 100, liquid cylinder 100 is not subject to
Alternating load, liquid cylinder is not easy to crack, and valve arrangement is mixed high pressure liquid cylinder 100, sealed letter body 700, secondary sealing letter 800 again and formed
Fluid power end pieces, the structure fluid end is applied widely, and pump efficiency is high.
Currently, conventional pump can not directly judge the sealing situation in cylinder, need from the processing of other path estimating.And this reality
It can directly be found with novel.In the case where assembly is unreasonable, gasket does not install, from 100 wing passage 120 of liquid cylinder just
It can be found that；If having liquid outflow at 100 wing passage 120 of liquid cylinder, illustrate that gasket does not install or be not mounted to position, needs
It readjusts；Pump operation for a period of time after, can also from this place judge gasket whether sealed reliable.
Inlet valve 200, dump valve 300 and the sealed letter that this case is cooperated using close connection, each component are connect with cylinder body 100
Closely, so that easy making process, convenient for disassembly and assembly, the utility model adapts to all kinds of media and pressure when with reciprocating pump flow matches
Power, applied widely, reciprocating pump makes working chamber content by reciprocating motion of the piston (plunger) in 100 working chamber of liquid cylinder
Product generates cyclically-varying and reaches conveying liquid by pump valve (inlet valve 200 and dump valve 300) and pipeline connection or closure
The purpose of (medium), the mechanical energy of prime mover are directly translated into the pressure energy of conveying liquid (medium) through pumping.
When piston (plunger) is moved to preset direction, 100 connection space 810 of liquid cylinder and connection space 810 and inhale
Enter the space at 211 docking of valve road hole to become larger, pressure reduction, inlet valve 200 is opened at this time, and medium is flowed to from access road 110
Valve road hole 211 is sucked, then into connection space 810；When the opposite direction movement of piston (plunger) toward preset direction, liquid cylinder
100 above-mentioned spaces become smaller, and under normal circumstances, liquid medium is incompressible, pressure rise, and inlet valve 200 is closed, dump valve 300
It opens, valve road hole 311 is discharged in the medium of 100 connection space 810 of liquid cylinder, then is arrived in 100 export pipeline of liquid cylinder.
To make the setting of inlet valve 200 more reasonable, even closer, guarantee inhalant effect is cooperated with 100 structure of cylinder body；It is excellent
Selection of land, inlet valve 200 include the lower valve base 210 for being removably mounted at installation space bottom, and the sucking valve road hole 211 is set to down
On valve seat 210, the bottom spool 220 is movably arranged on lower valve base 210 and partial insertion sucking valve road hole 211, in bottom spool
220 exposed portion are arranged with the lower spring 230 for resetting after its movement.
Further, be also equipped with lower shell 240 in installation space, the lower shell 240 respectively with lower valve base 210,
Secondary sealing letter 800 closely connects, and the bottom spool 220 exposes the part of lower valve base 210 and lower spring 230 is respectively positioned on lower shell
In 240 ring of encirclements, and the lower positioning ring 250 above bottom spool 220, the lower spring 230 are installed in lower shell 240
It is connected between bottom spool 220 and lower positioning ring 250.It is preferred that lower valve base 210 and 240 lower end gluing, sealing of lower shell and the two it
Between be provided with gasket.
To make the setting of dump valve 300 more reasonable, more with 100 structure of cylinder body, inlet valve 200, the cooperation of secondary sealing letter 800
Step up close, guarantee discharge effect；Preferably, dump valve 300 includes the upper valve base 310 being removably mounted in installation space, institute
It states discharge valve road hole 311 to be set on upper valve base 310, the upper valve core 320 is movably arranged on upper valve base 310 and partial insertion is arranged
Valve road hole 311 out, the upper spring 330 resetted after 320 exposed portion of upper valve core is arranged with for its movement, the export pipeline
Above discharge valve road hole 311.
Be also equipped with valve pressing sleeve 400 and upper shell 340 by top position in installation space, the upper shell 340 respectively with
Valve pressing sleeve 400, upper valve base 310 closely connect, and the upper valve core 320 exposes the part of upper valve base 310 and upper spring 330 is respectively positioned on
In 340 ring of encirclement of upper shell, and the upper positioning ring 350 above upper valve core 320 is installed in upper shell 340, it is described on
Spring 330 is connected between upper valve core 320 and upper positioning ring 350.
Preferably, the chock plug 500 connected with 400 upper end of valve pressing sleeve, the chock plug are closely provided at the top of installation space
500 outer walls, upper valve base 310,210 outer wall of lower valve base are provided with sealing element 600 between installation space inner wall respectively.
In the present case, preferably discharge valve 300 and inlet valve 200 are mounted in installation space straight down, lower valve base
The valve face 260 of 210/ upper valve base 310 is the joint face structure for being connected with 220/ upper valve core 320 of bottom spool and be used to control on-off,
The valve face 260 can be made into the conical surface, spherical surface, plane it is therein any one.
Inlet valve 200, dump valve 300 are to install downward vertically；Valve seat valve face 260 can be according to medium and performance needs
The conical surface, spherical surface or plane is made, mating cone valve, rubber valve, semisphere valve, flap type use, so that valve block structure is compact, adaptability
By force, it can be used for hyperbaric environment.
In conclusion the utility model, which relates to, discloses a kind of Vertical Combination valve group, lower valve base 210 has valve road hole, and medium is by entering
Valve road hole is arrived in mouth channel 110, then arrives connection space 810；Upper valve base 310 has valve road hole, according to dielectric property, 210 He of lower valve base
310 valve face 260 of upper valve base uses the conical surface, spherical surface, plane etc., can cooperate with cone valve, rubber cone valve, semisphere valve, flap type etc.
It uses.
Secondary sealing letter 800 is fitted into cylinder body 100, after sealed letter body 700 loads onto sealing element 600, is packed into liquid cylinder from the left side
100, end face and 800 gluing, sealing of secondary sealing letter, position can be arrived correct by rod iron insertion hole twisting adjustment secondary sealing letter 800
Position, 500 top of chock plug can press upper flange, be tightened by fastener.
The space that fluid end bears alternating load is made of sealed letter body 700, secondary sealing letter 800, lower shell 240；Lower valve
Seat 210 is sealed with lower shell 240 by gasket, has been completely cut off liquid cylinder 100 at this and has been contacted with high-pressure medium；Lower shell 240 with
Secondary sealing letter 800 is sealed by sealing ring, has been completely cut off liquid cylinder 100 at this and has been contacted with high-pressure medium；Sealed letter body 700 and pair are close
Packing 800 is sealed by sealing ring, has been completely cut off high-pressure medium at this and has been contacted with liquid cylinder 100.So bearing the area of alternating load
Domain is not contacted with cylinder body, and cylinder body is not easy to crack；Medium is contacted with liquid cylinder 100 to be solved reciprocating pump high-voltage field and properly uses vertical valve
Group prevents the technical tasks such as the cracking of liquid cylinder 100.
In reciprocating pump flow matches, this valve group and its all kinds of media of 100 Structure adaptation of liquid cylinder and pressure use model
It encloses wide.Reciprocating pump is all generate working chamber internal volume by reciprocating motion of the piston (plunger) in 100 working chamber of liquid cylinder
The variation of phase property is linked up or is closed by pump valve (inlet valve 200 and dump valve 300) and pipeline, achievees the purpose that convey liquid；It is former
The mechanical energy of motivation is directly translated into the pressure energy of conveying liquid through pumping.When piston (plunger) moves downward, in liquid cylinder 100
Portion space becomes larger, pressure reduction, and feed liquor medium overcomes the resistance of lower spring 230 under the action of pressure difference, and inlet valve 200 is opened
It opens, medium flows to sucking valve road hole 211 again in liquid cylinder 100 in space from access road 110；When piston (plunger) is turned right fortune
When dynamic, 100 inner space of liquid cylinder becomes smaller, and under normal circumstances, liquid medium is incompressible, pressure rise, and inlet valve 200 closes
It closes, dump valve 300 is opened, and the medium in space arrives in 100 export pipeline of liquid cylinder again through valve road hole 311 is discharged in liquid cylinder 100.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (6)
1. a kind of Vertical Combination valve group, it is characterised in that: include:
Cylinder body is equipped with installation space, the access road and installation equipped with the access road for being located at bottom vertically in the middle part of cylinder body
Space is connected；
Secondary sealing letter is removably mounted in the middle part of installation space, connection space is equipped with vertically in the middle part of secondary sealing letter, in cylinder body side
Portion is equipped with the wing passage close to secondary sealing letter；
Inlet valve is removably mounted in installation space and close to access road, and the inlet valve is located at below secondary sealing letter, institute
Stating inlet valve includes the sucking valve road hole being connected to respectively with access road, connection space, is movably installed at sucking valve road hole
Bottom spool can disconnect or be connected to sucking valve road hole and connection space after the bottom spool movement；
Dump valve is removably mounted in installation space and is located above secondary sealing letter, and the dump valve includes and connection space
The discharge valve road hole of connection is connected with export pipeline at the discharge valve road hole exits, is movably installed at discharge valve road hole
Upper valve core can disconnect or be connected to discharge valve road hole and export pipeline after the upper valve core movement；
Sealed letter body, partial insertion cylinder body and and secondary sealing letter docking.
2. a kind of Vertical Combination valve group according to claim 1, it is characterised in that: the inlet valve includes detachable installation
Lower valve base in installation space bottom, the sucking valve road hole are set on lower valve base, and the bottom spool is movably arranged on lower valve base
Upper and partial insertion sucks valve road hole, the lower spring resetted after bottom spool exposed portion is arranged with for its movement.
3. a kind of Vertical Combination valve group according to claim 2, it is characterised in that: be also equipped with lower cylinder in installation space
Body, the lower shell are closely connect with lower valve base, secondary sealing letter respectively, the part of the bottom spool exposing lower valve base and lower spring
It is respectively positioned in the lower shell ring of encirclement, and the lower positioning ring above bottom spool is installed in lower shell, the lower spring connects
It connects between bottom spool and lower positioning ring.
4. a kind of Vertical Combination valve group according to claim 2, it is characterised in that: the dump valve includes detachable installation
Upper valve base in installation space, the discharge valve road hole are set on upper valve base, and the upper valve core is movably arranged on upper valve base
And valve road hole is discharged in partial insertion, the upper spring resetted after upper valve core exposed portion is arranged with for its movement.
5. a kind of Vertical Combination valve group according to claim 4, it is characterised in that: also pacify in installation space by top position
Equipped with valve pressing sleeve and upper shell, the upper shell is closely connect with valve pressing sleeve, upper valve base respectively, and the upper valve core exposes upper valve base
Part and upper spring be respectively positioned in the upper shell ring of encirclement, and the upper positioning above upper valve core is installed in upper shell
Ring, the upper spring are connected between upper valve core and upper positioning ring.
6. a kind of Vertical Combination valve group according to claim 5, it is characterised in that: be closely provided at the top of installation space
The chock plug connected with valve pressing sleeve upper end, the chock plug outer wall, upper valve base, lower valve base outer wall are set between installation space inner wall respectively
It is equipped with sealing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013627.0U CN208474090U (en) | 2018-06-28 | 2018-06-28 | A kind of Vertical Combination valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013627.0U CN208474090U (en) | 2018-06-28 | 2018-06-28 | A kind of Vertical Combination valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474090U true CN208474090U (en) | 2019-02-05 |
Family
ID=65211873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821013627.0U Expired - Fee Related CN208474090U (en) | 2018-06-28 | 2018-06-28 | A kind of Vertical Combination valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117489583A (en) * | 2023-12-29 | 2024-02-02 | 宁波合力机泵股份有限公司 | Dense phase conveying CO 2 Low-clearance double-acting reciprocating pump hydraulic end of medium |
-
2018
- 2018-06-28 CN CN201821013627.0U patent/CN208474090U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117489583A (en) * | 2023-12-29 | 2024-02-02 | 宁波合力机泵股份有限公司 | Dense phase conveying CO 2 Low-clearance double-acting reciprocating pump hydraulic end of medium |
| CN117489583B (en) * | 2023-12-29 | 2024-04-19 | 宁波合力机泵股份有限公司 | Dense phase conveying CO2Low-clearance double-acting reciprocating pump hydraulic end of medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208474090U (en) | A kind of Vertical Combination valve group | |
| CN100520131C (en) | Micro-flow regulating valve | |
| CN109185252A (en) | Stepless air adjusting mechanism and piston compressor | |
| CN208416914U (en) | High pressure liquid housing structure and Vertical Combination valve group | |
| CN209297883U (en) | A kind of oil-water cooler | |
| CN108980428A (en) | Air compressor machine in-line relief valve | |
| CN206246731U (en) | Three-way control valve | |
| CN108869268A (en) | High pressure liquid housing structure and Vertical Combination valve group | |
| CN213393689U (en) | Oil return check valve | |
| CN205260879U (en) | High temperature resistant non return stop valve | |
| CN201269345Y (en) | Gas-fluid type piston valve | |
| CN201507449U (en) | Small flow capacity assembly type air compressor | |
| CN210396935U (en) | Novel main oil gallery pressure relief device | |
| CN208651723U (en) | Vibration proof pilot operated safety valve | |
| CN208982283U (en) | Small-size screw rod all-in-one integrated device | |
| CN208348536U (en) | A kind of crystallization baiting valve | |
| CN203477332U (en) | Self-sealing stop valve | |
| CN202545162U (en) | Novel water supply and mixing pump | |
| CN109973356A (en) | Stepless air adjusting mechanism and reciprocating compressor | |
| CN206592275U (en) | A kind of sealing structure on plunger pump | |
| CN106439041B (en) | Hydraulic oil adjustable flow height switching valve | |
| CN205423980U (en) | Zero leakage liquid accuse pressure regulating valve | |
| CN217328476U (en) | Pneumatic control type liquid medicine valve | |
| CN205314956U (en) | Water -cooled beam -pumping unit well head polish rod sealing device | |
| CN216477639U (en) | Tight seat of delivery valve of auto-parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 |