CN209494924U - A kind of new type sealing device - Google Patents
A kind of new type sealing device Download PDFInfo
- Publication number
- CN209494924U CN209494924U CN201822246180.8U CN201822246180U CN209494924U CN 209494924 U CN209494924 U CN 209494924U CN 201822246180 U CN201822246180 U CN 201822246180U CN 209494924 U CN209494924 U CN 209494924U
- Authority
- CN
- China
- Prior art keywords
- ring
- annular
- groove
- flexible sealing
- component
- 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.)
- Active
Links
Abstract
The utility model provides a kind of new type sealing device, first flexible sealing component includes first annular plugged zone, the first recessing groove is additionally provided on first annular plugged zone, the second flexible sealing component includes the second annular plugged zone, is additionally provided with the second recessing groove on the second annular plugged zone；First annular plugged zone top surface is connect with the second annular plugged zone top surface, and the first flexible sealing component and the second flexible sealing component form a closed ring type seal；First semicircular ring end face is equipped with nested groove and protrusion with the second semicircular ring end face, and the first semicircular ring and the second semi-circular shape are at a closed annular ring；Annular ring is equipped with shape and the consistent sealed groove of ring type seal, and ring type seal is nested in sealed groove.By knockdown, not closed flexible sealing component, rigid seal component, instead of traditional outside framework oil seal and sealing ring, maintenance does not need to disassemble hydraulic cylinder completion maintenance completely when replacing, and greatly reduces maintenance time and cost of labor.
Description
Technical field
The utility model relates to hydraulic cylinder part field more particularly to a kind of new type sealing devices.
Background technique
Bulldozer working device oil cylinder head oil seepage phenomena is relatively common, the reason is that oil cylinder piston bar part is sudden and violent for a long time
It exposes outside, with stretching for oil cylinder, the length of expose portion constantly changes；Since working environment passes through piston rod surface
Often adhere to some impurity, with constantly stretching when cylinder efficient, will result in the Fast Wearing of oil cylinder front end oil sealing, to make
At oil cylinder leading portion leakage of oil.Winter temperature is cold, can congeal into ice in piston rod leakage part water, equally will cause oil cylinder front end
Wear oil leak.
Oil cylinder front end leakage of oil is handled according to traditional repair method, oil pipe bolts at two ends is unclamped, unclamps drive end bearing bracket four
A bolt, then by piston rod and piston body all from cylinder bucket extract out, successively disintegrate and removed from piston rod piston component and
Fastening nut finally removes drive end bearing bracket from piston rod, then dismantles four bolts, finally just removes the oil sealing to be replaced, will
It is replaced；Then it is successively assembled according still further to opposite program, until being installed.
According to this traditional repair method, not only program is especially cumbersome, and demolition part is relatively more, and in disassembly piston rod
When also to go hang or other lifting facilities cooperation, especially take manually, the repair time is long；And it will cause cylinder bucket in disassembly process
Internal hydraulic oil leakage, causes oil plant to waste.
In view of this, it is proposed that a kind of new type sealing device solves the above problems.
Summary of the invention
The purpose of this utility model is to provide a kind of new type sealing devices, by the way that traditional rubber seal to be designed as
Traditional outside framework oil seal is designed to knockdown, not closed rigid seal by knockdown, not closed flexible sealing component
Component, to realize that replacement sealing ring does not need integrally to disassemble hydraulic cylinder, quick-replaceable sealing ring and outside framework oil seal save dimension
Repair time, cost of labor.
The technology that the utility model uses is:
A kind of new type sealing device, including the first flexible sealing component, the second flexible sealing component and rigid seal component,
First flexible sealing component includes first annular plugged zone, and first annular protrusion, the first ring are equipped at the top of first annular plugged zone
The first recessing groove is additionally provided on shape plugged zone, the second flexible sealing component includes the second annular plugged zone, the second annular plugged zone
Top is equipped with the second annular protrusion, and the second recessing groove is additionally provided on the second annular plugged zone, and first annular protrusion is stepped down with second
Slot shape is consistent, cooperation is nested, and the second annular protrusion is consistent with shown first recessing groove shape, cooperation is nested；First annular envelope
Blocking layer top surface is connect with the second annular plugged zone top surface, the second recessing groove of first annular protrusion insertion, the insertion of the second annular protrusion
First recessing groove, the first flexible sealing component and the second flexible sealing component form a closed ring type seal；Rigidity is close
Sealing assembly includes the first semicircular ring and the second semicircular ring, and the first semicircular ring end face is equipped with nested groove with the second semicircular ring end face
With protrusion, the first semicircular ring and the second semi-circular shape are at a closed annular ring；Annular ring is equipped with shape and ring packing
Consistent sealed groove is enclosed, ring type seal is nested in sealed groove.
Through the above scheme, by the way that traditional rubber seal is designed as knockdown, not closed flexible sealing group
Traditional outside framework oil seal is designed to knockdown, not closed rigid seal component by part, will when sealing ring is replaced in maintenance
Ring type seal is removed, and the first flexible sealing component and the second flexible sealing component are coupled sealed groove, must
Be bonded, guarantee first is carried out with flexible glue is smeared on the contact surface of the second flexible sealing component in the first flexible sealing component when wanting
The leakproofness for the ring type seal that flexible sealing component and the second flexible sealing component are formed；Rigid seal component is formd
The annular ring that can be combined repairs detachable maintaining when replacing or directly renews, do not needed instead of traditional outside framework oil seal
Full dismantling hydraulic cylinder completes maintenance, greatly reduces maintenance time and cost of labor.
It further include external fixed ring as advanced optimizing for scheme, external fixed ring is equipped with consistent with annular ring shape
Fixed groove, annular ring is nested in fixed groove.Knockdown rigid seal component is pacified by the cooperation of external fixed ring
Dress, forms stable structure, realizes the function of traditional outside framework oil seal.
As advanced optimizing for scheme, the first semicircular ring end face one is equipped with the first protrusion, and it is recessed that other end is equipped with first
Slot, the second semicircular ring change one, face and are equipped with the second protrusion, and other end is equipped with the second groove, and the first protrusion is nested with the second groove to be connected
It connects, the second protrusion and the first groove nested encryptions.It, can be by the first semicircular ring and the second semicircle ring design in this prioritization scheme
Shape in a center of symmetry.
As advanced optimizing for scheme, the first semicircular ring end face one is equipped with the first protrusion, and it is convex that other end is equipped with second
It rises, the second semicircular ring changes one, face and is equipped with the first groove, and other end is equipped with the second groove, and the first protrusion is nested with the second groove to be connected
It connects, the second protrusion and the first groove nested encryptions.In this prioritization scheme, groove and protrusion separately design the first semicircular ring with
In second semicircular ring.
As advanced optimizing for scheme, the internal diameter of ring type seal and the internal diameter of annular ring are consistent.The internal diameter one of the two
It causes to guarantee leakproofness.
As advanced optimizing for scheme, the internal diameter of external fixed ring is greater than or equal to the internal diameter of annular ring.Outside is fixed
Ring can not be contacted with the piston rod of hydraulic cylinder, guarantee that external fixed ring and stablizing for rigid seal component cooperate.
As advanced optimizing for scheme, the material of the first flexible sealing component and the second flexible sealing component is rubber.
Rubber material is the common used material of oil enveloping structure, and processing cost is low.
As advanced optimizing for scheme, the material of rigid seal component is metal.Rigid seal component is using copper, stainless
The metal material of the oil resistants such as steel corrosion meets use environment requirement.
As advanced optimizing for scheme, the height of ring type seal and the depth of sealed groove are consistent.Control is flexible close
The form fit relationship of sealing assembly and rigid seal component, is conducive to sealing effect.
As advanced optimizing for scheme, the height of annular ring and the depth of fixed groove are consistent.Control rigid seal group
The form fit relationship of part and external fixed ring, is conducive to sealing effect.
Compared with prior art, the utility model has the beneficial effects that
By the way that traditional rubber seal is designed as knockdown, not closed flexible sealing component, by traditional bone
Frame stem seal design tears ring type seal open when sealing ring is replaced in maintenance at knockdown, not closed rigid seal component
It removes, the first flexible sealing component and the second flexible sealing component is coupled sealed groove, it is soft first when necessary
Property seal assembly on the contact surface of the second flexible sealing component smear flexible glue carry out it is be bonded, guarantee the first flexible sealing component
The leakproofness of the ring type seal formed with the second flexible sealing component；The annular that can be combined is formd for rigid seal component
Circle repairs detachable maintaining when replacing or directly renews, do not need to disassemble hydraulic cylinder completely instead of traditional outside framework oil seal
Maintenance is completed, maintenance time and cost of labor are greatly reduced.
Knockdown rigid seal component being coupled by external fixed ring, forms stable structure, realizes
The function of traditional outside framework oil seal.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of new type sealing device provided by the utility model；
Fig. 2 is a kind of longitudinal sectional view of new type sealing device provided by the utility model；
Fig. 3 is a kind of explosive view of new type sealing device provided by the utility model；
Fig. 4 is a kind of structural schematic diagram of the rigid seal component of new type sealing device provided by the utility model；
Fig. 5 is the structural schematic diagram for promoting hydraulic cylinder.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that,
These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function
Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance or the quantity for implicitly indicating indicated technical characteristic.The feature of " first ", " second " etc. is defined as a result,
It can explicitly or implicitly include one or more of the features.In the description of the invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through
Concrete condition understands concrete meaning of the above-mentioned term in the invention.
Embodiment 1:
It please refers to shown in attached drawing 1-5, a kind of new type sealing device, including the first flexible sealing component 11, second is flexible close
Sealing assembly 13 and rigid seal component, the first flexible sealing component 11 include first annular plugged zone 12, first annular plugged zone
12 tops are equipped with first annular raised 121, are additionally provided with the first recessing groove 122, the second flexible sealing on first annular plugged zone 12
Component 13 includes the second annular plugged zone 14, and the second annular protrusion 141, the second annular envelope are equipped at the top of the second annular plugged zone 14
The second recessing groove 142 is additionally provided in blocking layer 14, first annular raised 121 is consistent with 142 shape of the second recessing groove, cooperation is nested,
Second annular protrusion 141 is consistent with shown first recessing groove, 122 shape, cooperation is nested；First annular 12 top surface of plugged zone and the
The connection of 14 top surface of second ring plugged zone, the second recessing groove 142 of first annular raised 121 insertion, the second annular protrusion 141 insertion the
One recessing groove 122, the first flexible sealing component 11 and the second flexible sealing component 13 form a closed ring type seal 1；
Rigid seal component includes the first semicircular ring 21 and the second semicircular ring 22,21 end face of the first semicircular ring and 22 end face of the second semicircular ring
Equipped with nested groove and protrusion, the first semicircular ring 21 and the second semicircular ring 22 form a closed annular ring 2；Annular ring 2
It is equipped with shape and the consistent sealed groove 23 of ring type seal 1, ring type seal 1 is nested in sealed groove 23.
As shown in figure 5, the oil enveloping structure at the cylinder head 41 of hydraulic cylinder 4 in replacement, is needed the whole dismantling of hydraulic cylinder 4,
The oil enveloping structure for being set in piston rod 42 could be replaced after piston rod 42 is exited completely.In the present embodiment, pass through above-mentioned side
Case, it is flexible by the way that traditional rubber seal is designed as knockdown, not closed first flexible sealing component 11 and second
Traditional outside framework oil seal is designed to knockdown, not closed rigid seal component by seal assembly 13, in maintenance replacement sealing
When circle, ring type seal 1 is removed, the first flexible sealing component 11 and the second flexible sealing component 13 are coupled sealing
Groove 23 smears flexible glue on the contact surface of the first flexible sealing component 11 and the second flexible sealing component 13 when necessary
It is bonded, guarantees the leakproofness for the ring type seal 1 that the first flexible sealing component 11 and the second flexible sealing component 13 are formed；
The annular ring 2 that can be combined is formd for rigid seal component, instead of traditional outside framework oil seal, detachable maintaining when maintenance is replaced
Or directly renew, it does not need to disassemble the completion maintenance of hydraulic cylinder 4 completely, greatly reduces maintenance time and cost of labor.
Specifically, the front shroud 411 of cylinder head 41 is removed, the utility model sealing device is exposed, by the first flexible sealing
Rigid seal component is cleaned and is checked from rigid seal component from taking out, cutting by component 11 and the second flexible sealing component 13
Abrasion condition decides whether replacement rigid seal component as needed, and the combination of rigid seal component is set on piston rod 42,
And new the first flexible sealing component 11 and the second flexible sealing component 13 are respectively put into sealed groove 23, according to practical feelings
Condition is bonded the first flexible sealing component 11 and the second flexible sealing component 13, and front shroud 411 is installed back cylinder head 41, can be completed
The maintenance of oil sealing is replaced.
First flexible sealing component 11 and the second flexible sealing component 13 can carry out adhesion by flexible glue, form with
The consistent ring type seal 1 of traditional seal shape realizes and replaces sealing ring without disassembling piston rod 42, dimension is greatly saved
Repair the time；It is also required to dismantling piston rod 42 for traditional outside framework oil seal, when needing replacing, passes through knockdown rigid seal group
Part realizes quick-replaceable effect.
Ring type seal 1 is also possible to after a complete sealing ring cut, and is set in piston rod 42 and is bonded again, but
This method bonding plane is small, low using durability degree, and the sealing ring being bonded again is simultaneously not rounded, not tight with the cooperation of outside framework oil seal
It is close, do not use gluing to depend merely on extruding, sealing effect is bad.The ring type seal 1 provided in the present embodiment, the first flexible sealing
Component 11 and the bonding plane of the second flexible sealing component 13 are big, even if not using gluing, pass through the embedding of annular protrusion and recessing groove
It covers, the extruding between top surface is also able to achieve preferable sealing effect.
It further include external fixed ring 3 as advanced optimizing for scheme, external fixed ring 3 is equipped with and 2 shape one of annular ring
The fixed groove 31 of cause, annular ring 2 are nested in fixed groove 31.Knockdown rigid seal component passes through external fixed ring 3
Be coupled, form stable structure, realize the function of traditional outside framework oil seal.By external fixed ring 3, guarantee rigid
Property seal assembly combinative stability, guarantee the first semicircular ring 21 do not separated in use with the second semicircular ring 22.
That is, external fixed ring 3 is formd with rigid seal component and the consistent structure of traditional bone oil sealing shape,
And only needed when repair and replacement for can easy dismounting rigid seal component, substantially increase the speed of maintenance.
Embodiment 2:
It please refers to shown in Fig. 1-5, the present embodiment and the difference of embodiment 1 are that the present embodiment is mainly for rigid seal group
Design is optimized in the fit system of part, to be more suitable practical effect.
In the present embodiment, 21 end face of the first semicircular ring one is equipped with the first protrusion 24, and other end is equipped with the first groove 25,
Second semicircular ring 22 changes one, face and is equipped with the second protrusion 26, and other end is equipped with the second groove 27, the first protrusion 24 and the second groove
27 nested encryptions, the second protrusion 26 and 25 nested encryptions of the first groove.In this prioritization scheme, can by the first semicircular ring 21 with
Second semicircular ring 22 is designed to centrosymmetric shape, by the first protrusion 24 and the second protrusion 26 when processing, the first groove 25 and
Second groove 27 is designed as consistent shape, and needing to process a kind of semicircular ring can be realized the effect of knockdown rigid seal component
Fruit, but semicircular ring both ends at this time are respectively groove and protrusion, are processed complex.
It in the present embodiment, can also be that 21 end face of the first semicircular ring one is equipped with the first protrusion 24, other end is equipped with the
Two protrusions 26, the second semicircular ring 22 change one, face and are equipped with the first groove 25, and other end is equipped with the second groove 27, the first protrusion 24 with
Second groove, 27 nested encryptions, the second protrusion 26 and 25 nested encryptions of the first groove.In this prioritization scheme, groove and protrusion point
She Ji not be in the first semicircular ring 21 and the second semicircular ring 22, protrusion concentrates in a semicircular ring respectively with groove at this time, adds
First protrusion 24 and the second protrusion 26, the first groove 25 and the second groove 27 are designed as consistent shape by working hour, and the processing is simple,
Need to make two kinds of semicircular rings, in the case where required precision is not high, after annulus is sealed the processing of groove 23, direct line is cut
The first semicircular ring 21 and the second semicircular ring 22 can be formed by cutting.
Embodiment 3:
It please refers to shown in Fig. 1-5, the present embodiment and the difference of embodiment 2 are that the present embodiment passes through to the first flexible sealing
Component 11, the second flexible sealing component 13, rigid seal component and external fixed ring 3 size relationship be defined design, with
More suitable actual use.
In the present embodiment, the internal diameter of ring type seal 1 is consistent with the internal diameter of annular ring 2, and the internal diameter of external fixed ring 3 is big
In or equal to annular ring 2 internal diameter.The internal diameter of the two unanimously guarantees leakproofness.External fixed ring 3 can be with the piston of hydraulic cylinder 4
Bar 42 does not contact, and guarantees that external fixed ring 3 cooperates with stablizing for rigid seal component.
As advanced optimizing for scheme, the height of ring type seal 1 is consistent with the depth of sealed groove 23, annular ring 2
Height it is consistent with the depth of fixed groove 31.Control the form fit relationship of flexible sealing component and rigid seal component, control
The form fit relationship of rigid seal component processed and external fixed ring 3, is conducive to sealing effect.Pass through above-mentioned two technical side
Case forms circular ring structure as shown in Figure 1, forms consistent shape knot after traditional outside framework oil seal and sealing ring cooperation
Structure is realized to the general of 41 oil-sealing arrangement of cylinder head of existing oil cylinder.
As advanced optimizing for scheme, the material of the first flexible sealing component 11 and the second flexible sealing component 13 is rubber
Glue.Rubber material is the common used material of oil enveloping structure, and processing cost is low.
As advanced optimizing for scheme, the material of rigid seal component is metal.Rigid seal component is using copper, stainless
The metal material of the oil resistants such as steel corrosion meets use environment requirement.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of new type sealing device, which is characterized in that including the first flexible sealing component (11), the second flexible sealing component
(13) with rigid seal component, the first flexible sealing component (11) includes first annular plugged zone (12), first ring
It is equipped at the top of shape plugged zone (12) first annular raised (121), is additionally provided with the first resigning on the first annular plugged zone (12)
Slot (122), the second flexible sealing component (13) include the second annular plugged zone (14), the described second annular plugged zone (14)
Top is equipped with the second annular protrusion (141), is additionally provided with the second recessing groove (142) on the described second annular plugged zone (14), described
First annular protrusion (121) is consistent with the second recessing groove (142) shape, cooperation is nested, second annular protrusion (141)
It is consistent with shown first recessing groove (122) shape, cooperation is nested；First annular plugged zone (12) top surface and second ring
The connection of shape plugged zone (14) top surface, described first annular raised (121) are embedded in second recessing groove (142), second ring
Shape protrusion (141) is embedded in first recessing groove (122), the first flexible sealing component (11) and second flexible sealing
Component (13) forms a closed ring type seal (1)；
The rigid seal component includes the first semicircular ring (21) and the second semicircular ring (22), the first semicircular ring (21) end face
Nested groove and protrusion, first semicircular ring (21) and second semicircle is equipped with the second semicircular ring (22) end face
Ring (22) forms a closed annular ring (2)；
Annular ring (2) is equipped with shape and the ring type seal (1) consistent sealed groove (23), the ring packing
Circle (1) is nested in the sealed groove (23).
2. a kind of new type sealing device according to claim 1, which is characterized in that it further include external fixed ring (3), it is described
External fixed ring (3), which is equipped with, is nested in institute with the consistent fixed groove of annular ring (2) shape (31), annular ring (2)
It states in fixed groove (31).
3. a kind of new type sealing device according to claim 2, which is characterized in that the first semicircular ring (21) end face one
Head is equipped with first raised (24), and other end is equipped with the first groove (25), and second semicircular ring (22) changes one, face and is equipped with second
Raised (26), other end are equipped with the second groove (27), described first raised (24) and the second groove (27) nested encryptions, institute
State second raised (26) and the first groove (25) nested encryptions.
4. a kind of new type sealing device according to claim 2, which is characterized in that the first semicircular ring (21) end face one
Head is equipped with first raised (24), and other end is equipped with second raised (26), and second semicircular ring (22) changes one, face and is equipped with first
Groove (25), other end are equipped with the second groove (27), described first raised (24) and the second groove (27) nested encryptions, institute
State second raised (26) and the first groove (25) nested encryptions.
5. a kind of new type sealing device according to claim 3 or 4, which is characterized in that the ring type seal (1) it is interior
Diameter is consistent with the internal diameter of annular ring (2).
6. a kind of new type sealing device according to claim 5, which is characterized in that the internal diameter of the external fixed ring (3)
More than or equal to the internal diameter of annular ring (2).
7. a kind of new type sealing device according to claim 6, which is characterized in that the first flexible sealing component (11)
Material with the second flexible sealing component (13) is rubber.
8. a kind of new type sealing device according to claim 7, which is characterized in that the material of the rigid seal component is
Metal.
9. a kind of new type sealing device according to claim 5, which is characterized in that the height of the ring type seal (1)
It is consistent with the depth of the sealed groove (23).
10. a kind of new type sealing device according to claim 6, which is characterized in that the height of annular ring (2) and institute
The depth for stating fixed groove (31) is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246180.8U CN209494924U (en) | 2018-12-29 | 2018-12-29 | A kind of new type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246180.8U CN209494924U (en) | 2018-12-29 | 2018-12-29 | A kind of new type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209494924U true CN209494924U (en) | 2019-10-15 |
Family
ID=68154221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822246180.8U Active CN209494924U (en) | 2018-12-29 | 2018-12-29 | A kind of new type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209494924U (en) |
-
2018
- 2018-12-29 CN CN201822246180.8U patent/CN209494924U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203978827U (en) | A kind of Roots pump of good cooling results | |
| CN209494924U (en) | A kind of new type sealing device | |
| CN201706134U (en) | Fastener for blocking underwater pipeline | |
| CN203258251U (en) | Novel hose clamp | |
| CN204267960U (en) | A kind of direct insertion fast-assembling joint for plastic tube | |
| CN201661712U (en) | Ball valve | |
| CN204785204U (en) | Fluid pressure line seal structure | |
| CN204705455U (en) | A kind of tool structure for single tube pressure testing | |
| CN205064347U (en) | A drive bearing structure for starting feed water pump | |
| CN103615538A (en) | Leakage-proof bonded washer | |
| CN208935001U (en) | The mechanical seal structure of steam power plant's low pressure heating pump | |
| CN201787269U (en) | Articulated pipeline repairing joint | |
| CN203604253U (en) | Centrifugal pump | |
| CN202302015U (en) | Valve plate with high strength | |
| CN204283707U (en) | The Pelton wheel pipeline structure that lower cross road pipe is removable | |
| CN201786730U (en) | Double-end-surface submersible pump sealing device | |
| CN203892643U (en) | External pilot relief valve structure | |
| CN204403503U (en) | A kind of anti-valve body and the corrosion-prone forging valve body in pipe fitting joint | |
| CN208619223U (en) | A kind of vehicle radiator water chamber water drain valve structure | |
| CN203441817U (en) | Novel electric ash liquid pump | |
| CN202597721U (en) | Stop valve | |
| CN213144946U (en) | Platform propulsion oil cylinder | |
| CN208204076U (en) | A kind of fixing ball valve gland flange split type structure | |
| CN201787268U (en) | Pipeline rush-repair joint with half structure | |
| CN205061480U (en) | Fork truck with cooling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |