CN111473139A - Check valve with high-pressure-resistant back-flushing disc - Google Patents
Check valve with high-pressure-resistant back-flushing disc Download PDFInfo
- Publication number
- CN111473139A CN111473139A CN202010350392.XA CN202010350392A CN111473139A CN 111473139 A CN111473139 A CN 111473139A CN 202010350392 A CN202010350392 A CN 202010350392A CN 111473139 A CN111473139 A CN 111473139A
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- Prior art keywords
- check valve
- valve body
- high pressure
- adjusting screw
- valve
- 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.)
- Pending
Links
- 238000011010 flushing procedure Methods 0.000 title description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- 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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
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- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
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- 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
- F16K17/0413—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 in the form of closure plates
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- 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
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the technical field of check valves, in particular to a check valve with a high-pressure-resistant recoil disc, which comprises a valve body, wherein the bottom of the valve body is provided with an air inlet pipe and an air outlet pipe which are communicated with the outside, the end part of the air inlet pipe extends to the inside of the valve body and is welded with a rectangular fixed block, the end part of the air inlet pipe penetrates through the middle part of the rectangular fixed block, symmetrically distributed convex blocks are arranged at the other side of the rectangular fixed block and at the position close to the top, a rubber sealing plate is hinged between the two convex blocks, a fixed plate is horizontally welded on the inner wall of the valve body and at the position close to the top of the rectangular fixed block, an air guide pipe is vertically arranged in. This check valve with high resistance to compression type recoil dish can carry out the pressure release to the check valve through recoil dish and air duct to prevent that the check valve is damaged, can improve the compressive strength of recoil dish through the reinforcing ring.
Description
Technical Field
The invention relates to the technical field of check valves, in particular to a check valve with a high-pressure-resistant back-flushing disc.
Background
The check valve is a valve in which an opening and closing member acts by self weight and medium pressure to block a medium from flowing backwards, and a check valve is required to be used in a petrochemical transportation pipe to prevent petrochemical from flowing backwards and ensure that petrochemical only flows in the transportation pipe in a one-way manner.
Disclosure of Invention
The present invention is directed to a check valve having a high pressure-resistant back-flushing disk, so as to solve the problem of the prior art that the pressure relief structure is not available in the existing check valve, and the check valve may be damaged when the pressure in the check valve is too high.
In order to achieve the purpose, the invention provides the following technical scheme:
a check valve with a high pressure-resistant recoil disc comprises a valve body, wherein an air inlet pipe and an air outlet pipe which are communicated with the outside are arranged at the bottom of the valve body, the end part of the air inlet pipe extends to the inside of the valve body and is welded with a rectangular solid block, the end part of the air inlet pipe penetrates through the middle part of the rectangular solid block, symmetrically distributed convex blocks are arranged at the other side of the rectangular solid block and close to the top of the rectangular solid block, a rubber sealing plate is hinged between the two convex blocks, a Z-shaped pressure relief pipe communicated with the outside is arranged at the position of the outer circumferential wall of the valve body and close to the middle part of the valve body, a fixing plate is horizontally welded at the position of the inner wall of the valve body and close to the top of the rectangular solid block, an air guide pipe is vertically arranged at the middle part of the top of the fixing plate, the surface of strengthening ring just is close to the vertical spliced pole that arranges with annular array that is equipped with in position at edge, be equipped with the clamp plate directly over the strengthening ring, the vertical gag lever post that is equipped with in middle part on clamp plate surface, the outside cover of gag lever post is equipped with the spring, the top flange joint of valve body has the valve gap, the vertical screw thread that has seted up in top of valve gap leads to the groove, the logical inslot swing joint of screw thread has adjusting screw, adjusting screw's bottom edge is equipped with annular fixed block, the inside vertical circular slot of having seted up in middle part of adjusting screw bottom.
Preferably, the end of the Z-shaped pressure relief pipe is positioned between the pressure plate and the fixing plate.
Preferably, the top edge of the circumferential outer wall of the air duct is provided with an annular rubber pad, and the outer side of the annular rubber pad is attached to the inner wall of the opening of the recoil disc.
Preferably, the inner wall of the valve body and the edge of the top of the fixing plate are provided with limiting rings.
Preferably, the top of the connecting column is bonded to the bottom of the pressure plate.
Preferably, the external thread of the adjusting screw is matched with the internal thread of the threaded through groove, and the adjusting screw is in threaded connection with the valve cover.
Preferably, a hand wheel is welded on the top of the adjusting screw rod.
Preferably, the outer diameter of the limiting rod is matched with the inner diameter of the circular slot, and the limiting rod is connected with the adjusting screw in a sliding mode.
Preferably, the top of the spring is bonded with the bottom of the annular fixing block.
Preferably, the outer diameter of the pressure plate is matched with the diameter of the inner wall of the valve body, a sealing rubber ring is arranged in the middle of the circumferential outer wall of the pressure plate, and the pressure plate is connected with the valve body in a sliding mode.
Compared with the prior art, the invention has the beneficial effects that:
this check valve with high resistance to compression type recoil dish, can prevent the petrochemical gas backward flow through the solid piece of rectangle and the rubber shrouding that are equipped with, can carry out the pressure release to the check valve through recoil dish and the air duct that is equipped with, thereby prevent the check valve damage, can adjust the pressure of clamp plate to the recoil dish through adjusting screw and spring, thereby the pressure size in the adjustment pressure release condition, can improve the compressive strength of recoil dish through the strengthening ring, make the strengthening ring be connected with the clamp plate through the spliced pole, ensure the strengthening ring along with the recoil dish synchronous motion.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view and an internal structure view of the valve cover and the valve body in the present invention;
FIG. 3 is a cross-sectional view of the valve cover of the present invention;
FIG. 4 is a partial schematic structural view of the present invention;
FIG. 5 is a schematic view of an assembly structure of the adjusting screw and the pressing plate according to the present invention;
fig. 6 is a schematic view of an assembly structure of the fixing plate and the kick plate in the present invention.
In the figure: the air valve comprises a valve body 1, an air inlet pipe 10, a rectangular fixing block 100, a convex block 1000, a rubber sealing plate 101, an air outlet pipe 11, a Z-shaped pressure relief pipe 12, a limiting ring 13, a fixing plate 14, an air guide pipe 140, an annular rubber pad 1400, a valve cover 2, a threaded through groove 20, an adjusting screw rod 3, a hand wheel 30, an annular fixing block 31, a circular slot 32, a pressing plate 4, a limiting rod 40, a spring 5, a recoil disc 6, a reinforcing ring 7 and a connecting column 70.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1-6, the present invention provides a technical solution:
a check valve with a high pressure resistant back-flushing disc comprises a valve body 1, wherein the bottom of the valve body 1 is provided with an air inlet pipe 10 and an air outlet pipe 11 which are communicated with the outside, the air inlet pipe 10 and the air outlet pipe 11 are connected with a petrochemical gas conveying pipe, the end part of the air inlet pipe 10 extends into the valve body 1 and is welded with a rectangular solid block 100, the end part of the air inlet pipe 10 penetrates through the middle part of the rectangular solid block 100, the other side of the rectangular solid block 100 and the position close to the top are provided with symmetrically distributed convex blocks 1000, a rubber sealing plate 101 is hinged between the two convex blocks 1000, the effect of preventing backflow is realized through the rubber sealing plate 101, the position close to the middle part of the circumferential outer wall of the valve body 1 is provided with a Z-shaped pressure relief pipe 12 communicated with the outside, the other end of the Z-shaped pressure relief pipe 12 is connected with a petrochemical gas recovery device, petrochemical gas generated during pressure relief is led out through the Z-shaped pressure, the bottom and the middle upper part of the valve body 1 are separated by the fixing plate 14, the middle part of the top of the fixing plate 14 is vertically provided with the air duct 140, excessive gas is introduced into the middle upper part of the valve body 1 by the air duct 140, the bottom end of the air duct 140 is communicated with the bottom of the inner wall of the valve body 1, the back-flushing disc 6 is arranged right above the air duct 140, the back-flushing disc 6 and the air duct 140 are in a sealing state when being closed, and are in an opening state when the air pressure is too high, so that the pressure relief effect is realized, the top of the back-flushing disc 6 is sleeved with the reinforcing ring 7, the compressive strength of the back-flushing disc 6 can be improved by the reinforcing ring 7, the four connecting columns 70 which are distributed in an annular array are vertically arranged on the surface of the reinforcing ring 7 and at the position close to the edge, the pressing plate 4 is arranged right above the reinforcing ring 7, certain pressure is applied to, the vertical gag lever post 40 that is equipped with in middle part on 4 surfaces of clamp plate, the outside cover of gag lever post 40 is equipped with spring 5, exert pressure to clamp plate 4 through spring 5, the top flange joint of valve body 1 has valve gap 2, make the inside of valve body 1 be in encapsulated situation, the vertical screw thread that has seted up of top of valve gap 2 leads to groove 20, swing joint has adjusting screw 3 in the logical groove 20 of screw thread, can adjust the pressure to recoil dish 6 through adjusting screw 3, adjusting screw 3's bottom edge is equipped with annular fixed block 31, the inside vertical circular slot 32 of having seted up in middle part of adjusting screw 3 bottom, with gag lever post 40 sliding connection, make clamp plate 4 can not take place the aversion when removing.
In this embodiment, the end of the Z-shaped pressure relief tube 12 is located between the pressure plate 4 and the fixing plate 14, so as to ensure that the petrochemical gas generated during pressure relief can be led out from the Z-shaped pressure relief tube 12.
Specifically, the top edge of the circumferential outer wall of the air duct 140 is provided with the annular rubber pad 1400, and the outer side of the annular rubber pad 1400 is attached to the inner wall of the opening of the recoil disc 6, so that the recoil disc 6 and the top of the air duct 140 are in a sealed state when not opened.
Specifically, the inner wall of the valve body 1 and the edge at the top of the fixing plate 14 are provided with the limiting ring 13, so that the fixing plate 14 is prevented from moving upwards due to air pressure, and the fixing plate 14 is reinforced.
Further, the top of the connecting column 70 is bonded to the bottom of the press plate 4, so that the reinforcing ring 7 can move synchronously with the recoil plate 6.
Further, the external thread of adjusting screw 3 and the internal thread looks adaptation of screw thread logical groove 20, adjusting screw 3 and valve gap 2 threaded connection make adjusting screw 3 can fix a position after removing.
Furthermore, a hand wheel 30 is welded on the top of the adjusting screw rod 3, so that a user can rotate the adjusting screw rod 3 conveniently.
Furthermore, the top of the spring 5 is bonded with the bottom of the annular fixing block 31, so that the positions of both ends of the spring 5 can be fixed.
In addition, the external diameter of clamp plate 4 and the diameter looks adaptation of 1 inner wall of valve body, and the middle part of 4 circumference outer walls of clamp plate is equipped with the sealing rubber circle, and clamp plate 4 and 1 sliding connection of valve body ensure that the petrochemical gas that produces can not upwards leak from the junction of clamp plate 4 and 1 inner wall of valve body during the pressure release.
When the check valve with the high pressure resistant type recoil disc is used, a user adjusts the adjusting screw rod 3 according to the air pressure strength which can be born by the air conveying pipe and the check valve, so that the adjusting screw rod 3 moves upwards or downwards, the spring 5 generates different pressures on the pressure plate 4, the recoil disc 6 generates certain pressure on the air guide pipe 140, the normally conveyed air in the valve body 1 cannot be output upwards from the air guide pipe 140, when the air pressure in the valve body 1 is overlarge, the petrochemical gas can be output upwards from the air guide pipe 140 and applies thrust to the recoil disc 6, the petrochemical gas generated by pressure relief can move upwards when the bottom stress of the recoil disc 6 is larger than the top stress, at the moment, the recoil disc 6 and the reinforcing ring 7 move upwards simultaneously to drive the pressure plate 4 to move upwards to generate extrusion force on the spring 5, the recoil disc 6 is separated from the air guide pipe 140 to perform pressure relief treatment, the petrochemical gas generated by pressure relief can be led out from the Z-shaped pressure relief, avoid the petrochemical gas direct discharge to the external world, atmospheric pressure is stable the back, under the effect of spring 5, drives recoil dish 6 and adds reinforcing ring 7 and remove that resets, makes recoil dish 6 and air duct 140 be in encapsulated situation to can prevent that the inside atmospheric pressure of valve body 1 from too big leading to the check valve to damage.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A check valve with high pressure-resistant type recoil disc, includes valve body (1), its characterized in that: the bottom of the valve body (1) is provided with an air inlet pipe (10) communicated with the outside, the end part of the air inlet pipe (10) extends to the inside of the valve body (1) and is welded with a rectangular solid block (100), the end part of the air inlet pipe (10) penetrates through the middle part of the rectangular solid block (100), the other side of the rectangular solid block (100) and the position close to the top are provided with symmetrically distributed convex blocks (1000), a rubber sealing plate (101) is hinged between the two convex blocks (1000), the position on the outer wall of the circumference of the valve body (1) and close to the middle part is provided with a Z-shaped pressure relief pipe (12) communicated with the outside, the inner wall of the valve body (1) and the position close to the top of the rectangular solid block (100) are horizontally welded with a fixing plate (14), the middle part on the top of the fixing plate (14) is vertically provided with an air guide pipe (, a recoil disc (6) is arranged right above the air duct (140), a reinforcing ring (7) is sleeved at the top of the recoil disc (6), four connecting columns (70) which are arranged in an annular array are vertically arranged on the surface of the reinforcing ring (7) and close to the edge, a pressure plate (4) is arranged right above the reinforcing ring (7), a limiting rod (40) is vertically arranged in the middle of the surface of the pressure plate (4), a spring (5) is sleeved on the outer side of the limiting rod (40), a valve cover (2) is connected to the top flange of the valve body (1), a threaded through groove (20) is vertically formed in the top of the valve cover (2), an adjusting screw rod (3) is movably connected in the threaded through groove (20), an annular fixing block (31) is arranged at the bottom edge of the adjusting screw rod (3), the middle part of the bottom of the adjusting screw rod (3) is inwards and vertically provided with a circular slot (32).
2. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the end part of the Z-shaped pressure relief pipe (12) is positioned between the pressure plate (4) and the fixing plate (14).
3. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the top edge of the circumferential outer wall of the air duct (140) is provided with an annular rubber pad (1400), and the outer side of the annular rubber pad (1400) is attached to the inner wall of the opening of the recoil disc (6).
4. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: and a limiting ring (13) is arranged on the inner wall of the valve body (1) and positioned at the edge of the top of the fixing plate (14).
5. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the top of the connecting column (70) is bonded with the bottom of the pressing plate (4).
6. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the external thread of the adjusting screw rod (3) is matched with the internal thread of the thread through groove (20), and the adjusting screw rod (3) is in threaded connection with the valve cover (2).
7. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: and a hand wheel (30) is welded at the top of the adjusting screw rod (3).
8. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the outer diameter of the limiting rod (40) is matched with the inner diameter of the circular slot (32), and the limiting rod (40) is connected with the adjusting screw rod (3) in a sliding mode.
9. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the top of the spring (5) is bonded with the bottom of the annular fixing block (31).
10. The check valve with a high pressure resistant recoil disc of claim 1 further comprising: the outer diameter of the pressing plate (4) is matched with the diameter of the inner wall of the valve body (1), a sealing rubber ring is arranged in the middle of the circumferential outer wall of the pressing plate (4), and the pressing plate (4) is connected with the valve body (1) in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350392.XA CN111473139A (en) | 2020-04-28 | 2020-04-28 | Check valve with high-pressure-resistant back-flushing disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350392.XA CN111473139A (en) | 2020-04-28 | 2020-04-28 | Check valve with high-pressure-resistant back-flushing disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111473139A true CN111473139A (en) | 2020-07-31 |
Family
ID=71763057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010350392.XA Pending CN111473139A (en) | 2020-04-28 | 2020-04-28 | Check valve with high-pressure-resistant back-flushing disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111473139A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774580A (en) * | 2020-12-31 | 2021-05-11 | 宁波巨化化工科技有限公司 | Feeding control device for chloroethane synthesis protection reactor |
| CN113413842A (en) * | 2021-06-10 | 2021-09-21 | 江苏斯尔邦石化有限公司 | Heat recovery system for preparing butadiene through oxidative dehydrogenation and application method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB564795A (en) * | 1942-01-30 | 1944-10-13 | Hugh Allan Brinkworth | Charging, or non-return valve, for the passage of fluid or gas |
| GB717436A (en) * | 1952-03-11 | 1954-10-27 | Vear Oliver Goument | Improvements in hydraulic rams |
| CN201354873Y (en) * | 2009-02-26 | 2009-12-02 | 王华铭 | E series safety relief valve used for aluminium manufacturer channelization digestion system |
| WO2014135333A1 (en) * | 2013-03-08 | 2014-09-12 | Jan Floberg | Dual plate check valve assembly with rising stem |
| CN206017912U (en) * | 2016-08-27 | 2017-03-15 | 江苏苏盐阀门机械有限公司 | A kind of high sealing formula check-valves |
| CN208703134U (en) * | 2018-09-04 | 2019-04-05 | 安徽省屯溪高压阀门有限公司 | A kind of angie type high pressure valve |
| CN212226101U (en) * | 2020-04-28 | 2020-12-25 | 百强阀门集团有限公司 | Check valve with high-pressure-resistant back-flushing disc |
-
2020
- 2020-04-28 CN CN202010350392.XA patent/CN111473139A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB564795A (en) * | 1942-01-30 | 1944-10-13 | Hugh Allan Brinkworth | Charging, or non-return valve, for the passage of fluid or gas |
| GB717436A (en) * | 1952-03-11 | 1954-10-27 | Vear Oliver Goument | Improvements in hydraulic rams |
| CN201354873Y (en) * | 2009-02-26 | 2009-12-02 | 王华铭 | E series safety relief valve used for aluminium manufacturer channelization digestion system |
| WO2014135333A1 (en) * | 2013-03-08 | 2014-09-12 | Jan Floberg | Dual plate check valve assembly with rising stem |
| CN206017912U (en) * | 2016-08-27 | 2017-03-15 | 江苏苏盐阀门机械有限公司 | A kind of high sealing formula check-valves |
| CN208703134U (en) * | 2018-09-04 | 2019-04-05 | 安徽省屯溪高压阀门有限公司 | A kind of angie type high pressure valve |
| CN212226101U (en) * | 2020-04-28 | 2020-12-25 | 百强阀门集团有限公司 | Check valve with high-pressure-resistant back-flushing disc |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774580A (en) * | 2020-12-31 | 2021-05-11 | 宁波巨化化工科技有限公司 | Feeding control device for chloroethane synthesis protection reactor |
| CN112774580B (en) * | 2020-12-31 | 2022-07-26 | 宁波巨化化工科技有限公司 | Feeding control device for chloroethane synthesis protection reactor |
| CN113413842A (en) * | 2021-06-10 | 2021-09-21 | 江苏斯尔邦石化有限公司 | Heat recovery system for preparing butadiene through oxidative dehydrogenation and application method thereof |
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