CN108895220A - A kind of pressure reducing valve with a variety of connection types - Google Patents
A kind of pressure reducing valve with a variety of connection types Download PDFInfo
- Publication number
- CN108895220A CN108895220A CN201810604831.8A CN201810604831A CN108895220A CN 108895220 A CN108895220 A CN 108895220A CN 201810604831 A CN201810604831 A CN 201810604831A CN 108895220 A CN108895220 A CN 108895220A
- Authority
- CN
- China
- Prior art keywords
- connection
- sleeve
- forms
- flow
- inner sidewall
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
Abstract
The invention discloses a kind of pressure reducing valves with a variety of connection types, including valve body, the left end of the valve body and right end form flow through connection tubes portion, the tip inside wall in flow through connection tubes portion has inner ring connected in star, internal screw thread is formed on the inner sidewall of inner ring connected in star, the inner end of grafting body forms annular slot, annular slot corresponds to and forms external screw thread on the inner sidewall in flow through connection tubes portion, flow through connection tubes portion sleeve is in corresponding annular slot, internal screw thread and external screw thread are meshed, annular slot corresponds to and is nested with sealing shroud on the inner sidewall of the lateral wall in flow through connection tubes portion, sealing shroud is pressed against on the lateral wall in flow through connection tubes portion, extend connector sleeve sleeve in grafting body, the connection pull ring that lateral wall forms in the middle part of extension connector sleeve is bolted to connection the outer end face in grafting body.The present invention can according to need using flanged joint, be spirally connected or grafting, and connection type is more, can satisfy different connection requirements.
Description
Technical field：
The present invention relates to valve technology field, more specifically to a kind of pressure reducing valve with a variety of connection types.
Background technique：
The both ends of its general valve body of existing pressure reducing valve form the connecting tube with flange, and connection type only has list
One flanged joint, and be unable to satisfy the connection request of different pipelines, for example, bolt connection type connection or plug-in type connection,
It is not able to satisfy different installation requirements.
Summary of the invention：
The purpose of the present invention is overcoming the deficiencies of the prior art and provide a kind of pressure reducing valve with a variety of connection types, it
It can according to need using flanged joint, be spirally connected or grafting, connection type is more, can satisfy different connection requirements.
The present invention solve the technical problem scheme be：
A kind of pressure reducing valve with a variety of connection types, including valve body, the left end of the valve body and right end form stream
Logical connecting section, the tip inside wall in flow through connection tubes portion have inner ring connected in star, form on the inner sidewall of inner ring connected in star
Internal screw thread, the inner end of grafting body form annular slot, and annular slot corresponds to be formed on the inner sidewall in flow through connection tubes portion
External screw thread, in corresponding annular slot, internal screw thread and external screw thread are meshed flow through connection tubes portion sleeve, the corresponding stream of annular slot
It is nested with sealing shroud on the inner sidewall of the lateral wall of logical connecting section, sealing shroud is pressed against on the lateral wall in flow through connection tubes portion,
Extend connector sleeve sleeve in grafting body, extends the connection pull ring that lateral wall forms in the middle part of connector sleeve and be bolted
It is connected to the outer end face of grafting body, the outer end for extending connector sleeve forms connecting flange；
Cylindrical sleeve is formed in the middle part of valve body, the top and bottom end of cylindrical sleeve are molded over the top surface of the inside of valve body
On bottom surface, the left upper portion of cylindrical sleeve has upper through slot, and the lower right side of cylindrical sleeve forms lower through slot, cylindrical sleeve
The top surface of inside of valve body on top form through-hole, in through-holes, the lower part sleeve of vertical bar is in cylinder for vertical bar sleeve
In body, the bottom end of vertical bar is fixed with round table-like spool, and the inside middle portion wall of cylindrical sleeve forms raised circle, protrusion circle
Inner sidewall is the conical inner side wall matched with round table-like spool, embedding in the annular groove having in the lateral wall of round table-like spool
It is cased with sealing ring, the lateral wall and sealing ring of round table-like spool are pressed against the inner sidewall of protrusion circle, and valve is protruded on the top of vertical bar
In the connection body that the middle top surface of body forms, the top of vertical bar is fixed with link block, and flexible sheet is fixed on link block
Top surface on, the lateral wall end of flexible sheet forms ring part, and ring part is nested in the upper inner wall tool of connection body
In some annular grooves, upper joint sleeve body is bolted to connection on the top end face of connection body, and ring part is pressed against company
On the bottom face of female connector body；
The adjusting body upwardly extended is formed in the middle part of the top plate of the upper joint sleeve body, adjustment spring sleeve is being adjusted
In body, the middle top surface of flexible sheet is put forth effort in the bottom end of adjustment spring, and the top of adjustment spring, which is put forth effort on, adjusts body
The spring that top is inserted with is adjusted on the bottom surface of pressing plate, and the top for adjusting body is fixed with adjusting cover board, vertical adjusting screw rod spiral shell
It connecing in adjusting cover board, the bottom end of vertical adjusting screw rod is protruded on the top surface for adjusting in body and being hinged on spring adjusting pressing plate,
The top of vertical adjusting screw rod, which is stretched out, to be adjusted cover board and is fixed with regulating wheel；
Top at the right side of the valve body forms decompression through-hole, and decompression through-hole is communicated with body is connect.
The inside middle portion wall of the grafting body has radially extending edges, and the inner face for extending connector sleeve is pressed against radial prolong
It stretches on side.
Gasket is clamped between the connection body and upper joint sleeve body.
It is fixed with link block on the top surface of the link block, link block and upper link block are clamped in the middle part of flexible sheet
Between, link block is put forth effort in the bottom end of adjustment spring.
The edge of the flexible sheet forms the annular relief upwardly extended.
Primary seal circle is nested in the annular groove having on the inner sidewall of the through-hole, vertical bar sleeve is in primary seal circle
In, the lateral wall of vertical bar is pressed against on the inner sidewall of primary seal circle.
Sealing air ring is clamped between the radially extending edges and the inner face for extending connector sleeve.
Protrusion effect of the invention is：Compared with prior art, it can according to need using flanged joint, is spirally connected or inserts
It connects, connection type is more, can satisfy different connection requirements.
Detailed description of the invention：
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment：
Embodiment is shown in as shown in Figure 1, a kind of pressure reducing valve with a variety of connection types, including valve body 10, the valve body 10
Left end and right end form flow through connection tubes portion 11, the tip inside wall in flow through connection tubes portion 11 has inner ring connected in star
110, internal screw thread is formed on the inner sidewall of inner ring connected in star 110, and the inner end of grafting body 20 forms annular slot 21, annular
External screw thread is formed on the inner sidewall in the corresponding flow through connection tubes portion 11 of slot 21,11 sleeve of flow through connection tubes portion is in corresponding annular
In slot 21, internal screw thread and external screw thread are meshed, on the inner sidewall of the lateral wall in the corresponding flow through connection tubes portion 11 of annular slot 21
It is nested with sealing shroud 22, sealing shroud 22 is pressed against on the lateral wall in flow through connection tubes portion 11, extends 23 sleeve of connector sleeve in grafting
In body 20, extends the connection pull ring 24 that 23 middle part lateral wall of connector sleeve forms and be bolted to connection in grafting body
20 outer end face, the outer end for extending connector sleeve 23 form connecting flange 25；
The middle part of valve body 10 forms cylindrical sleeve 12, and the top and bottom end of cylindrical sleeve 12 are molded over the interior of valve body 10
On the top and bottom in portion, the left upper portion of cylindrical sleeve 12 has upper through slot 121, and the lower right side of cylindrical sleeve 12 forms
Lower through slot 122, the top surface of the inside of the valve body 10 on the top of cylindrical sleeve 12 form through-hole 14, and 15 sleeve of vertical bar is in through-hole
In 14, for the lower part sleeve of vertical bar 15 in cylindrical sleeve 12, the bottom end of vertical bar 15 is fixed with round table-like spool 16, cylindrical sleeve
The inside middle portion wall of body 12 forms protrusion circle 123, and the inner sidewall of protrusion circle 123 is the taper matched with round table-like spool 16
Inner sidewall, is nested with sealing ring 161 in the annular groove having in the lateral wall of round table-like spool 16, round table-like spool 16 it is outer
Side wall and sealing ring 161 are pressed against the inner sidewall of protrusion circle 123, and the middle top surface molding of valve body 10 is protruded on the top of vertical bar 15
In some connection bodies 17, the top of vertical bar 15 is fixed with link block 151, and flexible sheet 18 is fixed on the top of link block 151
On face, the lateral wall end of flexible sheet 18 forms ring part 181, and ring part 181 is nested in the top of connection body 17
In the annular groove that side wall has, upper joint sleeve body 19 is bolted to connection on the top end face of connection body 17, ring part
181 are pressed against on the bottom face of upper joint sleeve body 19；
The adjusting body 191 upwardly extended is formed in the middle part of the top plate of the upper joint sleeve body 19, adjustment spring 192 is inserted
It covers in adjusting body 191, the middle top surface of flexible sheet 18, the top of adjustment spring 192 are put forth effort in the bottom end of adjustment spring 192
The spring that the top that adjusting body 191 is put forth effort at end is inserted with is adjusted on the bottom surface of pressing plate 193, and the top for adjusting body 191 is solid
Surely have and adjust cover board 194, vertical adjusting screw rod 195, which is screwed onto, to be adjusted in cover board 194, and the bottom end of vertical adjusting screw rod 195 is protruded into
It adjusts in body 191 and is hinged on spring and adjust on the top surface of pressing plate 193, the top of vertical adjusting screw rod 195, which is stretched out, adjusts lid
Plate 194 is simultaneously fixed with regulating wheel 196；
Top at the right side of the valve body 10 form decompression through-hole 101, decompression through-hole 101 with connect 17 phase of body
It is logical.
Further, the inside middle portion wall of the grafting body 20 has radially extending edges 26, extends connector sleeve 23
Inner face is pressed against in radially extending edges 26.
Further, gasket 2 is clamped between the connection body 17 and upper joint sleeve body 18.
Further, link block 152, the middle part folder of flexible sheet 18 are fixed on the top surface of the link block 151
It holds between link block 151 and upper link block 152, link block 152 is put forth effort in the bottom end of adjustment spring 192.
Further, the edge of the flexible sheet 18 forms the annular relief upwardly extended.
Further, it is nested with primary seal circle 141 in the annular groove having on the inner sidewall of the through-hole 14, vertically
In primary seal circle 141, the lateral wall of vertical bar 15 is pressed against on the inner sidewall of primary seal circle 141 15 sleeve of bar.
Further, sealing air ring is clamped between the radially extending edges 26 and the inner face for extending connector sleeve 23
1。
When the present embodiment is in use, it can be directly connected to by connecting flange 25 with water pipe, and when needs use the side of being spirally connected
When formula, grafting body 20 can be rotated, so that grafting body 20 is unloaded from flow through connection tubes portion 11, it is recessed by annular
The external thread bolt connection of the internal screw thread and water pipe that form on the inner sidewall of slot 110 realizes connection, and needs using socket connection
When, it can will extend connector sleeve 23 after dismantling in grafting body 20, by connection water pipe holding in grafting body 20, connect water
The end of pipe is pressed against on sealing air ring 1, and since holding equal in two flow through connection tubes portions 11 connects water pipe, and two connect
The other end of water pipe connects other water pipes, in this way, the squeezing action of the connection water pipe by both ends, it is ensured that sealing, from
And realize plug connection.
The present embodiment can satisfy different connection type connections, very convenient.
Finally, the above embodiments are only used to illustrate the present invention, and not limitation of the present invention, related technical field
Those of ordinary skill can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore
All equivalent technical solutions also belong to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (7)
1. a kind of pressure reducing valve with a variety of connection types, including valve body (10), it is characterised in that：The left end of the valve body (10)
It is formed with right end flow through connection tubes portion (11), the tip inside wall of flow through connection tubes portion (11) has inner ring connected in star
(110), internal screw thread is formed on the inner sidewall of inner ring connected in star (110), the inner end of grafting body (20) forms annular slot
(21), external screw thread, flow through connection tubes portion (11) are formed on the inner sidewall of annular slot (21) corresponding flow through connection tubes portion (11)
In corresponding annular slot (21), internal screw thread and external screw thread are meshed sleeve, the corresponding flow through connection tubes portion of annular slot (21)
(11) it is nested on the inner sidewall of lateral wall sealing shroud (22), sealing shroud (22) is pressed against the outside of flow through connection tubes portion (11)
On wall, extends connector sleeve (23) sleeve in grafting body (20), extend the connection that lateral wall forms in the middle part of connector sleeve (23)
Pull ring (24) is bolted to connection the outer end face in grafting body (20), and the outer end for extending connector sleeve (23) forms company
Acting flange (25)；
It is formed in the middle part of valve body (10) cylindrical sleeve (12), the top and bottom end of cylindrical sleeve (12) are molded over valve body (10)
Inside top and bottom on, the left upper portion of cylindrical sleeve (12) has upper through slot (121), the right side of cylindrical sleeve (12)
Lower part forms lower through slot (122), and the top surface of the inside of the valve body (10) on the top of cylindrical sleeve (12) forms through-hole (14),
Vertical bar (15) sleeve in through-hole (14), the lower part sleeve of vertical bar (15) in cylindrical sleeve (12), vertical bar (15)
Bottom end is fixed with round table-like spool (16), and the inside middle portion wall of cylindrical sleeve (12) forms protrusion circle (123), protrusion circle
(123) inner sidewall is the conical inner side wall matched with round table-like spool (16), is had in the lateral wall of round table-like spool (16)
It is nested in some annular grooves sealing ring (161), the lateral wall and sealing ring (161) of round table-like spool (16) are pressed against protrusion
The inner sidewall for enclosing (123), in the connection body (17) that the middle top surface that valve body (10) is protruded on the top of vertical bar (15) forms,
The top of vertical bar (15) is fixed with link block (151), and flexible sheet (18) is fixed on the top surface of link block (151), elasticity
The lateral wall end of diaphragm (18) forms ring part (181), and ring part (181) is nested in the upper inner of connection body (17)
In the annular groove that wall has, upper joint sleeve body (19) is bolted to connection on the top end face of connection body (17), annular
Portion (181) is pressed against on the bottom face of upper joint sleeve body (19)；
The adjusting body (191) upwardly extended, adjustment spring (192) are formed in the middle part of the top plate of the upper joint sleeve body (19)
For sleeve in adjusting body (191), the middle top surface of flexible sheet (18) is put forth effort in the bottom end of adjustment spring (192), adjusts bullet
The spring that the top that adjusting body (191) is put forth effort on the top of spring (192) is inserted with is adjusted on the bottom surface of pressing plate (193), is adjusted
The top of body (191), which is fixed with, adjusts cover board (194), and vertical adjusting screw rod (195), which is screwed onto, to be adjusted in cover board (194), erects
The bottom end of straight adjusting screw rod (195) is protruded on the top surface for adjusting in body (191) and being hinged on spring adjusting pressing plate (193), is erected
The top of straight adjusting screw rod (195), which is stretched out, to be adjusted cover board (194) and is fixed with regulating wheel (196)；
Top at the right side of the valve body (10) form decompression through-hole (101), decompression through-hole (101) with connect body (17)
It communicates.
2. a kind of pressure reducing valve with a variety of connection types according to claim 1, it is characterised in that：The grafting body
(20) inside middle portion wall has radially extending edges (26), and the inner face for extending connector sleeve (23) is pressed against radially extending edges (26)
On.
3. a kind of pressure reducing valve with a variety of connection types according to claim 1, it is characterised in that：The connection body
(17) it is clamped between upper joint sleeve body (18) gasket (2).
4. a kind of pressure reducing valve with a variety of connection types according to claim 1, it is characterised in that：The link block
(151) it is fixed on top surface link block (152), flexible sheet is clamped in link block 151 in the middle part of (18)) and upper link block
(152) between, link block (152) are put forth effort in the bottom end of adjustment spring (192).
5. a kind of pressure reducing valve with a variety of connection types according to claim 1, it is characterised in that：The flexible sheet
(18) edge forms the annular relief upwardly extended.
6. a kind of pressure reducing valve with a variety of connection types according to claim 1, it is characterised in that：The through-hole (14)
Inner sidewall on be nested with primary seal circle (141) in the annular groove that has, vertical bar (15) sleeve is in primary seal circle (141)
In, the lateral wall of vertical bar (15) is pressed against on the inner sidewall of primary seal circle (141).
7. a kind of pressure reducing valve with a variety of connection types according to claim 2, it is characterised in that：It is described to radially extend
Sealing air ring (1) is clamped between side (26) and the inner face for extending connector sleeve (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810604831.8A CN108895220A (en) | 2018-06-13 | 2018-06-13 | A kind of pressure reducing valve with a variety of connection types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810604831.8A CN108895220A (en) | 2018-06-13 | 2018-06-13 | A kind of pressure reducing valve with a variety of connection types |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895220A true CN108895220A (en) | 2018-11-27 |
Family
ID=64344965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810604831.8A Withdrawn CN108895220A (en) | 2018-06-13 | 2018-06-13 | A kind of pressure reducing valve with a variety of connection types |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780244A (en) * | 2019-01-29 | 2019-05-21 | 淮南市众兴机械制造有限责任公司 | A kind of valve with anti-blockage function |
-
2018
- 2018-06-13 CN CN201810604831.8A patent/CN108895220A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780244A (en) * | 2019-01-29 | 2019-05-21 | 淮南市众兴机械制造有限责任公司 | A kind of valve with anti-blockage function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207122681U (en) | A kind of pipe bending pipe joint | |
| CN108895220A (en) | A kind of pressure reducing valve with a variety of connection types | |
| CN205208000U (en) | Fast connector | |
| CN204591645U (en) | A kind of pump | |
| CN207961629U (en) | Y types pair go out valve | |
| CN2599368Y (en) | Pressure-resisting fast connection device for pipeline | |
| CN110541954A (en) | Thread type safety valve | |
| CN205896211U (en) | Central heating valve | |
| CN205689957U (en) | A kind of joint | |
| CN206145217U (en) | A quick connect structure for pull tap | |
| CN109268592A (en) | A kind of attachment device suitable for transformer fuel outlet valve | |
| CN204267934U (en) | A kind of movable tank connecting joint | |
| CN208670340U (en) | A kind of inflatable seal cushion rubber for pipeline connection | |
| CN108825799A (en) | A kind of dual spring pressure reducing valve | |
| CN209340691U (en) | A kind of isooctane sealing device | |
| CN209414695U (en) | Check valve apparatus | |
| CN209444929U (en) | A kind of elastomer connector ring flat-plate fixed structure | |
| CN207161799U (en) | A kind of vacuum abolishes joint | |
| CN205896469U (en) | Quick -operation joint for air pump | |
| CN108799519A (en) | A kind of high-seal valve easy to maintenance | |
| CN206582446U (en) | A kind of quick landing nipple of detachable pipeline | |
| CN205978886U (en) | Pipeline connecting part | |
| CN209483992U (en) | Unidirectional sampling valve module | |
| CN203961906U (en) | A kind of oil jacket valve of automatic pressure regulation balance | |
| CN203963306U (en) | A kind of rapid pipe joint that is threaded that adopts axial seal mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181127 |
|
| WW01 | Invention patent application withdrawn after publication |