CN112128449A - Sealing connection structure suitable for forged steel valve - Google Patents
Sealing connection structure suitable for forged steel valve Download PDFInfo
- Publication number
- CN112128449A CN112128449A CN202010949894.4A CN202010949894A CN112128449A CN 112128449 A CN112128449 A CN 112128449A CN 202010949894 A CN202010949894 A CN 202010949894A CN 112128449 A CN112128449 A CN 112128449A
- Authority
- CN
- China
- Prior art keywords
- sealing
- flange
- end cover
- pipeline
- connection structure
- 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- Withdrawn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
Images
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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
-
- 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
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
-
- 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
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention provides a sealing connection structure suitable for a forged steel valve, which comprises an upper sealing end cover; the upper sealing end cover is connected to an upper connecting flange of the valve body through bolts, the pipeline is connected to side connecting flanges at two ends of the valve body through flanges respectively, the outer sides of the upper connecting flange and the upper sealing end cover are further provided with sealing frames, and two groups of semicircular clamping plates are hermetically clamped between the side connecting flanges and the outer sides of flanges on the pipeline. Utilize the seal frame to clamp through the bayonet socket and adorn in last flange's the outside and through seal ring A sealing connection, through installing the clamp plate at the both ends of vertical double-screw bolt and utilizing the nut screens, make the clamp plate press on the flange of upper seal end cover, through two sets of semicircle cardboard clamping connection between side flange and pipeline flange, and through seal ring D sealing connection, and when two sets of semicircle cardboards passed through bolted connection on the T type connecting plate, utilize the outer baffle in the semicircle cardboard outside to promote side flange and pipeline flange zonulae occludens.
Description
Technical Field
The invention belongs to the technical field of valve sealing connection, and particularly relates to a sealing connection structure suitable for a forged steel valve.
Background
The flange is a part for connecting the shaft and is used for connecting pipe ends, the flange is also used on an inlet and an outlet of equipment and is used for connecting two pieces of equipment, such as a speed reducer flange, a flange connection or a flange joint, the flange and the flange joint are connected with each other to form a detachable connection of a combined sealing structure, and the valve is a device for controlling the direction, pressure and flow of fluid in a fluid system and is a device for enabling a medium in a pipe and the equipment to flow or stop and controlling the flow of the medium.
If the application number is: in CN 201921222594.5's patent, a valve sealing flange is disclosed, involve the valve field, including last valve body, bolt and nut, go up the first flange of lateral surface bottom fixedly connected with of valve body, the bottom threaded connection of first flange has first sealed the pad, the right side fixedly connected with second positioning flange of first flange, the bottom threaded connection of first sealed pad has the second flange, the medial surface fixedly connected with lower valve body of second flange. The utility model discloses an at the inside fixed connection square seal of locking ring, played the sealed effect of connecting between the valve to prevented the leakage phenomenon, through setting up the cylindrical roller in the rotating flange, realized down the valve body and rotated, thereby improved the flexibility of valve, through set up first gasket between first flange and second flange, can the wearing and tearing between effectual first flange of protection and the second flange, thereby played the effect of long-term use.
Based on the above, when the valve is installed and used, the connecting bolts between the connecting flanges at the upper end of the valve and between the valve and the pipeline flange are often loosened to cause leakage, and when the sealing gaskets between the flanges at the upper end of the valve and between the valve and the pipeline are damaged, the leakage between the flanges at the upper end of the valve and between the valve and the pipeline can be caused, so that the sealing connection structure suitable for the forged steel valve is needed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a sealing connection structure suitable for a forged steel valve, which aims to solve the problems that leakage is caused by frequent looseness of connecting bolts between connecting flanges at the upper end of the valve and between the valve and a pipeline flange, and the leakage is also caused when sealing gaskets between the flanges at the upper end of the valve and between the valve and the pipeline are damaged.
The invention is suitable for the purpose and the effect of a sealing connection structure of a forged steel valve, and is achieved by the following specific technical means:
a sealing connection structure suitable for a forged steel valve comprises an upper sealing end cover; the upper sealing end cover is connected to an upper connecting flange of the valve body through bolts, the pipeline is connected to side connecting flanges at two ends of the valve body through flanges respectively, the outer sides of the upper connecting flange and the upper sealing end cover are further provided with sealing frames, and two groups of semicircular clamping plates are hermetically clamped between the side connecting flanges and the outer sides of flanges on the pipeline.
Furthermore, a bayonet is arranged at the bottom side of the inner part of the sealing frame, and the bayonet is hermetically clamped and installed at the outer side of the upper connecting flange through a sealing washer A.
Furthermore, four ends of the bottom of the sealing frame are respectively connected with angle steel, and the bottom ends of the angle steel are respectively inserted into the screw rods of the lower plate and fixed through bolts.
Furthermore, the inner four-corner ends of the sealing frame are respectively connected with vertical studs, and two ends of the pressing plate are inserted into the vertical studs and pressed on the flange of the upper sealing end cover to be fixed through bolts.
Further, there are two sets of roofs on the top end of the sealing frame through the bolt connection, and the two sets of roofs are aligned and arranged and are in sealing connection with the sealing frame through a sealing washer B of a square structure, a semicircular notch is further arranged in the middle of the inner side of the roof, and the semicircular notch is clamped outside the vertical column of the upper sealing end cover and is in sealing connection with the sealing washer C.
Furthermore, the upper connecting flange and the flange of the upper sealing end cover are sealed inside the sealing frame and the top plate.
Furthermore, the outer end of semicircle cardboard is equipped with T type connecting plate respectively, and two sets of semicircle cardboard relative up-down constitute a circular clamp and through the bolted connection on the T type connecting plate, through circular structure's seal ring D sealing connection between circular clamp and side flange, the pipeline flange.
Furthermore, after three groups of outer baffles are further arranged on one side of each semicircular clamping plate and the two groups of semicircular clamping plates are connected into a circular clamping hoop, the outer baffles on the two groups of semicircular clamping plates are obliquely opposite, and a rubber pad is further arranged on the inner end face of each outer baffle.
The invention at least comprises the following beneficial effects:
1. according to the invention, the sealing frame is arranged, the sealing frame is clamped and mounted on the outer side of the upper connecting flange through the bayonet and is in sealing connection through the sealing washer A, the pressing plates are mounted at two ends of the vertical stud and are clamped through the nuts, so that the pressing plates are pressed on the flange of the upper sealing end cover, the upper flange of the upper sealing end cover is tightly pressed on the upper connecting flange, the two groups of top plates are aligned and clamped on the outer side of the vertical column of the upper sealing end cover and are in sealing connection through the sealing washer C, and the top plates are in sealing connection with the top of the sealing frame through the sealing washer B, so that even if the bolt between the upper flange of the upper sealing end cover and the upper connecting flange is loosened or the sealing washer.
2. According to the invention, the side connecting flange and the pipeline flange are connected in a clamping manner through the two groups of semicircular clamping plates and are hermetically connected through the sealing washer D, and when the two groups of semicircular clamping plates are connected through the bolts on the T-shaped connecting plate, the outer baffle plate on the outer side of the semicircular clamping plate is used for pushing the side connecting flange to be tightly connected with the pipeline flange, so that the bolt between the side connecting flange and the pipeline flange is prevented from loosening and the leakage caused when the sealing gasket between the side connecting flange and the pipeline flange is damaged is prevented.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of another embodiment of the present invention shown in fig. 1.
Fig. 3 is a schematic structural view of the top plate of fig. 1 according to the present invention when detached.
Fig. 4 is a schematic view of the press plate of fig. 3 with the press plate removed according to the present invention.
Fig. 5 is a schematic structural view of the valve body handwheel and the sealing frame in fig. 4 of the present invention with the handwheel and the sealing frame removed.
FIG. 6 is a schematic view of the valve body of FIG. 5 with the semi-circular clamping plates at the two ends detached.
Fig. 7 is a schematic structural view of the sealing frame of the present invention.
FIG. 8 is a schematic view of the connection of two semicircular snap-gauge plates according to the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a valve body; 101. an upper connecting flange; 102. a side connection flange; 2. an upper sealing end cover; 3. a pipeline; 4. a sealing frame; 401. a bayonet; 4011. sealing washer A; 402. angle steel; 403. a lower plate; 404. a vertical stud; 405. pressing a plate; 406. a sealing washer B; 407. a top plate; 4071. a semicircular notch; 408. sealing washer C; 5. a semicircular clamping plate; 501. a T-shaped connecting plate; 502. an outer baffle; 5021. a rubber pad; 6. and a sealing gasket D.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Example (b):
as shown in figures 1 to 8:
the invention provides a sealing connection structure suitable for a forged steel valve, which comprises an upper sealing end cover 2; the upper sealing end cover 2 is connected to an upper connecting flange 101 of the valve body 1 through bolts, the pipeline 3 is connected to side connecting flanges 102 at two ends of the valve body 1 through flanges respectively, a sealing frame 4 is further installed on the outer sides of the upper connecting flange 101 and the upper sealing end cover 2, and two sets of semicircular clamping plates 5 are installed on the outer sides of the side connecting flanges 102 and the flange on the pipeline 3 in a sealing clamping mode.
Wherein, the bottom side of the inside of the sealing frame 4 is provided with a bayonet 401, the bayonet 401 is sealed and clamped outside the upper connecting flange 101 through a sealing washer A4011, four ends of the bottom of the sealing frame 4 are respectively connected with an angle steel 402, the bottom end of the angle steel 402 is respectively inserted onto a screw rod of the lower plate 403 and fixed through a bolt, the four corner ends of the inside of the sealing frame 4 are respectively connected with a vertical stud 404, two ends of a pressure plate 405 are inserted onto the vertical studs 404 and pressed on a flange of the upper sealing end cover 2 and fixed through a bolt, the top end of the sealing frame 4 is connected with two groups of top plates 407 through bolts, the two groups of top plates 407 are arranged in contraposition and are sealed and connected with the sealing frame 4 through a sealing washer B406 with a square structure, the middle of the inside of the top plates 407 is further provided with a semicircular gap 407, the semicircular gap is clamped outside the vertical stud of the upper sealing end cover 2 and is sealed and connected through a sealing washer C408, the flanges of the upper, the sealing frame 4 is clamped on the outer side of the upper connecting flange 101 through a bayonet 401 and is in sealing connection through a sealing gasket A4011, the pressing plates 405 are installed at two ends of the vertical stud 404 and are clamped through nuts, the pressing plates 405 are pressed on the flange of the upper sealing end 2 cover, the upper flange of the upper sealing end cover 2 can be pressed on the upper connecting flange 101, the upper sealing end cover 2 is clamped on the outer side of the vertical column of the upper sealing end cover 2 in an aligning mode through two groups of top plates 407 and is in sealing connection through a sealing gasket C408, and the top plates 407 are in sealing connection on the top of the sealing frame 4 through a sealing gasket B406, and even if the bolts between the upper flange of the upper sealing end cover 2 and the upper connecting flange 101 are loosened or the sealing gasket is.
Wherein, the outer ends of the semicircular clamping plates 5 are respectively provided with T-shaped connecting plates 501, two groups of semicircular clamping plates 5 are oppositely arranged up and down to form a circular hoop and are connected through bolts on the T-shaped connecting plates 501, the circular hoop is connected with the side connecting flanges 102 and the pipeline 3 flanges through sealing gaskets D6 with a circular structure, one side of the semicircular clamping plates 5 is also provided with three groups of outer baffles 502, after the two groups of semicircular clamping plates 5 are connected into the circular hoop, the outer baffles 502 on the two groups of semicircular clamping plates 5 are obliquely opposite, the inner end surfaces of the outer baffles 502 are also provided with rubber gaskets 5021, the side connecting flanges 102 and the pipeline 3 flanges are connected through clamping of the two groups of semicircular clamping plates 5 and are connected through sealing gaskets D6 in a sealing way, when the two groups of semicircular clamping plates 5 are connected through bolts on the T-shaped connecting plates 501, the outer baffles 502 outside the semicircular clamping plates 5 are utilized, thereby preventing the loosening of bolts between the side connection flange 102 and the flange of the pipe 3 and the leakage when the gasket between the side connection flange 102 and the flange of the pipe 3 is damaged.
The specific use mode and function of the embodiment are as follows:
in the invention, a hand wheel on a valve body 1 is dismounted, a sealing frame 4 is downwards inserted on the valve body 1, the sealing frame 4 is clamped on the outer side of an upper connecting flange 101 through a bayonet 401 and is in sealing connection through a sealing washer A4011, angle steel 402 at four ends of the bottom of the sealing frame 4 is connected on a lower plate 403 through bolts, a pressing plate 405 is arranged at two ends of a vertical stud 404 and is clamped by nuts, the pressing plate 405 is pressed on a flange of an upper sealing end cover 2, the upper flange of the upper sealing end cover 2 is pressed on the upper connecting flange 101, two groups of top plates 407 are in contraposition clamping on the outer side of the vertical stud of the upper sealing end cover 2 through a semicircular 4071 and are in sealing connection through a sealing washer C408, the top plates 407 are in bolt connection with the top of the sealing frame 4 through a sealing washer B406, and the bolts between the upper flange of the upper sealing end cover 2 and the upper connecting flange, also can not make the leakage flow out seal frame 4, seal ring D6 suit is outside at side flange 102 and pipeline 3 flange, block two sets of semicircle cardboard 5 on side flange 102 and pipeline 3 flange outer terminal surface through outer baffle 502, when passing through bolted connection on two sets of semicircle cardboard 5T type connecting plates 501, through seal ring D6 sealing connection, utilize the outer baffle 502 in the semicircle cardboard 5 outside to promote side flange 102 and pipeline 3 flange zonulae occludens, thereby prevent the leakage when the sealed pad between side flange 102 and the pipeline 3 flange is not hard up and side flange 102 and the pipeline 3 flange damages.
The invention is not described in detail, but is well known to those skilled in the art.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The utility model provides a sealing connection structure suitable for forge steel valve door which characterized in that: comprises an upper sealing end cover (2); the upper sealing end cover (2) is connected to an upper connecting flange (101) of the valve body (1) through bolts, the pipeline (3) is connected to side connecting flanges (102) at two ends of the valve body (1) through flanges respectively, a sealing frame (4) is further installed on the outer sides of the upper connecting flange (101) and the upper sealing end cover (2), and two sets of semicircular clamping plates (5) are clamped on the outer sides of the side connecting flanges (102) and the flange on the pipeline (3) in a sealing mode.
2. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: a bayonet (401) is arranged on the bottom side of the inner portion of the sealing frame (4), and the bayonet (401) is hermetically clamped and installed on the outer side of the upper connecting flange (101) through a sealing washer A (4011).
3. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: the four ends of the bottom of the sealing frame (4) are respectively connected with angle steel (402), and the bottom ends of the angle steel (402) are respectively inserted into the screw rods of the lower plate (403) and fixed through bolts.
4. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: the inner side four-corner end of the sealing frame (4) is also respectively connected with a vertical stud (404), and two ends of a pressing plate (405) are inserted on the vertical studs (404) and pressed on the flange of the upper sealing end cover (2) to be fixed through bolts.
5. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: the top of sealing frame (4) has two sets of roofs (407) through bolted connection, and two sets of roofs (407) counterpoint the setting and with sealing frame (4) between seal ring B (406) sealing connection through square structure, still be equipped with a semicircle breach (407) in the middle of the inboard of roof (407), and semicircle breach (407) card is in the vertical post outside of upper seal end cover (2) and through seal ring C (408) sealing connection.
6. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: the upper connecting flange (101) and the flange of the upper sealing end cover (2) are sealed inside the sealing frame (4) and the top plate (407).
7. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: the outer end of semicircle cardboard (5) is equipped with T type connecting plate (501) respectively, and two sets of semicircle cardboard (5) relative up-down constitute a circular clamp and through bolted connection on T type connecting plate (501), through circular structure's seal ring D (6) sealing connection between circular clamp and side flange (102), pipeline (3) flange.
8. The sealing connection structure for a forged steel valve as claimed in claim 1, wherein: one side of semicircle cardboard (5) still is equipped with three outer baffles (502) of group, and behind two sets of semicircle cardboard (5) connection one-tenth circular clamp, outer baffle (502) slant on two sets of semicircle cardboard (5) is relative, and still is equipped with rubber pad (5021) on the interior terminal surface of outer baffle (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949894.4A CN112128449A (en) | 2020-09-10 | 2020-09-10 | Sealing connection structure suitable for forged steel valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949894.4A CN112128449A (en) | 2020-09-10 | 2020-09-10 | Sealing connection structure suitable for forged steel valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112128449A true CN112128449A (en) | 2020-12-25 |
Family
ID=73846558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010949894.4A Withdrawn CN112128449A (en) | 2020-09-10 | 2020-09-10 | Sealing connection structure suitable for forged steel valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112128449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566035A (en) * | 2021-08-19 | 2021-10-29 | 温州漏腐蚀五金制品有限公司 | Take drainage device's flange valve totally enclosed corrosion prevention system |
-
2020
- 2020-09-10 CN CN202010949894.4A patent/CN112128449A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566035A (en) * | 2021-08-19 | 2021-10-29 | 温州漏腐蚀五金制品有限公司 | Take drainage device's flange valve totally enclosed corrosion prevention system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112128449A (en) | Sealing connection structure suitable for forged steel valve | |
| CN107576452A (en) | Exhaust manifold airtight detecting apparatus and method | |
| CN105240630A (en) | Large boltless fast-mounted flange pair | |
| CN207377984U (en) | Flange seal clip | |
| CN105782438A (en) | Double-cover pressure container | |
| CN215842514U (en) | Ultrafiltration integrated membrane shell | |
| CN208719623U (en) | A kind of novel chemical pipeline flange | |
| CN214635439U (en) | Reverse osmosis device for sewage purification treatment equipment | |
| CN203743716U (en) | Pipe opening sealing device | |
| CN210661800U (en) | Flange plate easy to assemble and disassemble | |
| CN208281670U (en) | A kind of Ifold flange | |
| CN214305790U (en) | Oil circuit connecting device of bending machine | |
| CN208858631U (en) | A kind of sealing structure of vertical multiple-stage conduit centrifugal pump | |
| CN220878400U (en) | Connector convenient for replacing rupture disk in RO equipment | |
| CN221664795U (en) | Flange for fixing automobile exhaust emission pipe | |
| CN210978865U (en) | Combined self-locking flange | |
| US5092994A (en) | Membrane filter system | |
| CN217578373U (en) | Just, tear formula adsorption equipment open for industrial waste water treatment | |
| CN106425151B (en) | Pre-manufactured steel chimney shell ring connecting device | |
| CN219663081U (en) | Waste liquid impurity separator | |
| CN215258366U (en) | Special monitoring device for high-precision sealing flange | |
| CN214579514U (en) | Titanium alloy flange assembly | |
| CN216358934U (en) | Nanofiltration membrane element applied to dye production | |
| CN216618930U (en) | Quick-connection flange for single crystal furnace | |
| CN211346432U (en) | U-shaped pipe heat exchanger anti-loosening device |
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: 20201225 |
|
| WW01 | Invention patent application withdrawn after publication |