CN111059311A - Synchronous drive type fire-fighting valve - Google Patents
Synchronous drive type fire-fighting valve Download PDFInfo
- Publication number
- CN111059311A CN111059311A CN201911387668.5A CN201911387668A CN111059311A CN 111059311 A CN111059311 A CN 111059311A CN 201911387668 A CN201911387668 A CN 201911387668A CN 111059311 A CN111059311 A CN 111059311A
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- ring
- driving
- valve body
- sealing
- radial
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/246—Combination of a sliding valve and a lift valve
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
Abstract
The invention discloses a synchronous driving type fire-fighting valve which comprises a valve body, a flange ring body, a sleeve rod, a sliding sealing assembly, a driving ring and a connecting ring, wherein the sleeve rod is fixedly connected with the valve body; according to the invention, the outer ends of the driving internal thread cylinders are respectively provided with the connecting rings, then in order to play a limiting role, the outer sides of the peripheries of the connecting rings are provided with the limiting ring grooves, the driven gear rings are arranged in the limiting ring grooves, and the driving gear rings of the driving ring are meshed and connected with the outer sides of the driven gear rings of the connecting rings, so that the connecting rings on the upper side and the lower side of the synchronous driving valve body can be rotated by rotating the driving ring, and the internal thread cylinders are driven to rotate.
Description
Technical Field
The invention relates to a synchronous driving type fire-fighting valve.
Background
Valves are accessories for pipes used to open and close the pipe, control flow direction, regulate and control parameters of the transport medium. According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.
The general structure of current fire control valve all is including valve body, case, connecting rod, and the case is installed in the inside of valve body, drives the case through the connecting rod and rotates in the inside of valve body to realized opening and close and open, but the case is long-time with the valve body rotary friction, makes the sealed effect variation of valve.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the synchronous driving type fire valve is convenient to drive and good in sealing performance.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a synchronous driving type fire-fighting valve comprises a valve body, a flange ring body, a sleeve rod, a sliding sealing assembly, a driving ring and a connecting ring; two sides of the valve body are respectively provided with a flange ring body; a through cavity penetrating through the two ends of the valve body is arranged in the valve body; the sleeve rod is arranged in one side of the through cavity; the other side of the through cavity is provided with a sliding sealing component; the sliding sealing assembly comprises a conical telescopic ring, a movable ring body, a sleeved sealing ring, a radial through connecting rod, an axial driving screw, a driving internal thread cylinder and an elastic sealing film; the conical telescopic ring is arranged on the other side in the through cavity; the outer end of the conical telescopic ring is arranged between the flange ring body and the valve body, and the inner end of the conical telescopic ring is provided with the movable ring body; a sleeve sealing ring is arranged on the inner side of the movable ring body; the upper side and the lower side of the movable ring body are respectively provided with a radial through connecting rod; a sealing groove is respectively arranged in the upper side and the lower side of the valve body; two sides of the sealing groove are respectively provided with a clamping sliding groove; one end of the radial through connecting rod is fixed on the outer side surface of the movable ring body, and the other end of the radial through connecting rod sequentially penetrates through the sealing groove and the clamping sliding groove and then extends to the outside of the valve body; the radial through connecting rod is axially and slidably connected to the sealing groove and the clamping sliding groove of the valve body; an elastic sealing film is arranged in the sealing groove; the periphery of the outer end of the elastic sealing film is hermetically connected to the periphery of the radial through connecting rod, and the inner end of the elastic sealing film is hermetically connected to the peripheral inner wall of the sealing groove; the other end of the radial through connecting rod is vertically connected with an axial driving screw rod; the upper side and the lower side of the valve body are respectively and rotationally clamped with a driving internal thread cylinder; the axial driving screw is in threaded connection with the driving internal thread cylinder; the driving internal thread cylinder rotates to drive the axial driving screw to move, the axial driving screw drives the radial penetrating rod to move, the radial penetrating rod drives the moving ring body and the sleeving sealing ring to move, and the sleeving sealing ring is movably, sleeved and hermetically connected to the outer side of the periphery of the sleeving rod; the outer ends of the driving internal thread cylinders are respectively provided with a connecting ring; the outer sides of the periphery of the connecting ring are provided with limiting ring grooves; a driven gear ring is arranged in the limiting ring groove; the inner side of the driving ring is provided with a driving gear ring; the driving ring is sleeved on the outer side of the periphery of the valve body and is positioned on the outer side of the connecting ring; the driving gear ring of the driving ring is meshed and connected with the outer side of the driven gear ring of the connecting ring; the connecting ring is provided with a through channel penetrating through two ends of the connecting ring, and the through channel is communicated with the driving internal thread cylinder.
Furthermore, the outer parts of the upper side and the lower side of the valve body are respectively provided with a positioning clamping column; the outer sides of the periphery of the driving internal thread cylinder are provided with annular clamping grooves; the positioning clamping column is clamped in the annular clamping groove.
Furthermore, the radial through connecting rod is provided with a clamping block; the two sides of the clamping block are in sliding butt joint with the clamping sliding grooves of the valve body.
Furthermore, the sleeving sealing ring is made of high-elastic rubber materials.
Furthermore, the outer end of the conical telescopic ring is provided with an annular sealing ring; the annular sealing ring is clamped and installed between the flange ring body and the valve body; the flange ring body is connected with the valve body through a screw rod.
Further, the elastic closing membrane is made of a rubber material.
Further, the conical expansion ring is made of a corrugated pipe material.
Furthermore, the sleeve rod is arranged at the axle center of the through cavity in parallel through a connecting rod.
The invention has the advantages of
1. According to the invention, the outer ends of the driving internal thread cylinders are respectively provided with the connecting rings, then in order to play a limiting role, the outer sides of the peripheries of the connecting rings are provided with the limiting ring grooves, the driven gear rings are arranged in the limiting ring grooves, and the driving gear rings of the driving ring are meshed and connected with the outer sides of the driven gear rings of the connecting rings, so that the connecting rings on the upper side and the lower side of the synchronous driving valve body can be rotated by rotating the driving ring, and the internal thread cylinders are driven to rotate.
2. The invention changes the traditional valve sealing structure, the traditional rotary friction mode is replaced by the sliding sleeved operation mode, the axial driving screw rod is driven to move by driving the rotation of the internal thread cylinder, the axial driving screw rod drives the radial through connecting rod to axially move in the sealing groove and the clamping sliding groove of the valve body, so that the radial through connecting rod drives the movable ring body and the sleeved sealing ring to axially move in the valve body, and by utilizing the flexibility and the sealing property of the conical telescopic ring, when the sleeved sealing ring is movably sleeved and connected to the peripheral outer side of the sleeved connecting rod, the conical telescopic ring, the sleeved sealing ring and the sleeved connecting rod form a sealing structure, the sliding sleeved sealing structure is formed, the rotary friction is avoided, and the sleeved sealing ring is fastened on the sleeved connecting rod due to the high elasticity of the sleeved sealing ring, so that the sealing effect.
3. The adjustable flow rate device can effectively adjust and control the flow rate by adjusting the length of the distance between the sleeving sealing ring and the sleeving rod, and has ingenious structural design.
Drawings
Fig. 1 is a schematic structural view of the separation of the bell socket ring and the bell socket rod of the present invention.
Fig. 2 is a schematic structural view of the sleeved sealing ring sleeved around the sleeved rod according to the present invention.
Fig. 3 is a partially enlarged schematic view of the present invention.
FIG. 4 is a sectional view of the valve body, the movable ring body, the sleeved sealing ring and the radial through rod of the present invention.
FIG. 5 is a cross-sectional view of the bell and spigot joint rod, connecting rod, valve body of the invention.
Fig. 6 is a partially enlarged structural view of the drive ring and the connecting ring of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, a synchronous driving type fire valve comprises a valve body 1, a flange ring body 2, a sleeve rod 3, a sliding closure assembly 4, a driving ring 7 and a connecting ring 6; two sides of the valve body 1 are respectively provided with a flange ring body 2; a through cavity 11 penetrating through two ends of the valve body 1 is arranged in the valve body 1; the sleeve rod 3 is arranged in one side of the through cavity 11; the other side of the through cavity 11 is provided with a sliding closing component 4; the sliding sealing assembly 4 comprises a conical telescopic ring 41, a movable ring body 42, a sleeved sealing ring 43, a radial through connecting rod 44, an axial driving screw rod 45, a driving internal thread cylinder 46 and an elastic sealing film 47. The conical expansion ring 41 is arranged at the other side in the through cavity 11; the outer end of the conical expansion ring 41 is arranged between the flange ring body 2 and the valve body 1, and the inner end of the conical expansion ring 41 is provided with a movable ring body 42; a sleeve sealing ring 43 is arranged on the inner side of the movable ring body 42; the upper side and the lower side of the movable ring body 42 are respectively provided with a radial through connecting rod 44; a sealing groove 12 is respectively arranged in the upper side and the lower side of the valve body 1; two clamping sliding grooves 13 are respectively arranged on two sides of the sealing groove 12; one end of the radial through connecting rod 44 is fixed on the outer side surface of the movable ring body 42, and the other end of the radial through connecting rod extends to the outside of the valve body 1 after sequentially passing through the sealing groove 12 and the clamping sliding groove 13; the radial through connecting rod 44 is axially connected to the sealing groove 12 and the clamping sliding groove 13 of the valve body 1 in a sliding manner; an elastic sealing film 47 is arranged in the sealing groove 12; the periphery of the outer end of the elastic sealing film 47 is hermetically connected to the periphery of the radial through connecting rod 44, and the inner end of the elastic sealing film is hermetically connected to the peripheral inner wall of the sealing groove 12; the other end of the radial through connecting rod 44 is vertically connected with an axial driving screw rod 45; the upper side and the lower side of the valve body 1 are respectively rotationally clamped with a driving internal thread cylinder 46; the axial driving screw rod 45 is threaded in the driving internal thread cylinder 46; the driving internal thread cylinder 46 drives the axial driving screw rod 45 to move in a rotating mode, the axial driving screw rod 45 drives the radial penetrating rod 44 to move, the radial penetrating rod 44 drives the moving ring body 42 and the sleeving sealing ring 43 to move, and the sleeving sealing ring 43 is connected to the outer side of the periphery of the sleeving rod 3 in a moving and sleeving and sealing mode. The outer ends of the driving internal thread cylinders 46 are respectively provided with a connecting ring 6; the outer side of the periphery of the connecting ring 6 is provided with a limit ring groove 61; a driven gear ring 63 is arranged in the limiting ring groove 61; the inner side of the driving ring 7 is provided with a driving gear ring 71; the driving ring 7 is sleeved on the outer side of the periphery of the valve body 1 and is positioned on the outer side of the connecting ring 6; the driving gear ring 71 of the driving ring 7 is meshed and connected with the outer side of the driven gear ring 63 of the connecting ring 6; the connecting ring 6 is provided with a through channel 62 which runs through the two ends of the connecting ring, and the through channel 62 is communicated with the driving internal thread cylinder 46.
As shown in fig. 1 to 6, it is further preferable that the exterior of the upper and lower sides of the valve body 1 is respectively provided with a positioning clamping column 5; an annular clamping groove 461 is formed in the outer side of the periphery of the driving internal thread cylinder 46; the positioning clip column 5 is clipped in the annular clip groove 461. Further, the radial through-connection rod 44 is provided with a clamping block 441; the two sides of the clamping block 441 are in sliding butt joint with the clamping sliding grooves 13 of the valve body 1. Further, the sleeve sealing ring 43 is made of high elastic rubber material. Further, an annular sealing ring 411 is arranged at the outer end of the conical telescopic ring 41; the annular sealing ring 411 is clamped and installed between the flange ring body 2 and the valve body 1; the flange ring body 2 and the valve body 1 are connected through a screw 412. Further, the elastic closing film 47 is made of a rubber material. Further, the tapered expanding ring 41 is made of a bellows material. Further, the sleeve rod 3 is installed in parallel at the axis of the through cavity 11 through a connecting rod 31.
According to the invention, the outer ends of the driving internal thread barrels are respectively provided with the connecting rings, then in order to play a limiting role, the outer sides of the peripheries of the connecting rings are provided with the limiting ring grooves, the driven gear rings are arranged in the limiting ring grooves, and the driving gear rings of the driving ring are meshed and connected with the outer sides of the driven gear rings of the connecting rings, so that the connecting rings on the upper side and the lower side of the synchronous driving valve body can be rotated by rotating the driving ring, and the internal thread barrels are driven to rotate; the invention changes the traditional valve sealing structure, the invention replaces the traditional rotary friction mode by the sliding sleeve operation mode, the axial driving screw rod 45 is driven to move by driving the rotation of the internal thread cylinder 46, the axial driving screw rod 45 drives the radial through connecting rod 44 to move axially in the sealing groove 12 and the clamping sliding groove 13 of the valve body 1, so that the radial through connecting rod 44 drives the moving ring body 42 and the sleeve sealing ring 43 to move axially in the valve body 1, by utilizing the flexibility and the sealing property of the conical telescopic ring 41, when the sleeve sealing ring 43 is movably connected at the periphery outer side of the sleeve connecting rod 3, the conical telescopic ring 41, the sleeve sealing ring 43 and the sleeve connecting rod 3 form a sealing structure, thus forming the sliding sleeve sealing structure and avoiding the rotary friction, because the sleeve sealing ring 43 has high elasticity, the sleeve sealing ring 43 is fastened on the sleeve connecting rod 3, thereby ensuring the sealing effect. The invention can regulate and control the flow, and can effectively regulate and control the flow by regulating the length of the distance between the sleeving sealing ring 43 and the sleeving rod 3, and the structural design is ingenious.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A synchronous driving type fire-fighting valve is characterized by comprising a valve body, a flange ring body, a sleeve rod, a sliding sealing assembly, a driving ring and a connecting ring; two sides of the valve body are respectively provided with a flange ring body; a through cavity penetrating through the two ends of the valve body is arranged in the valve body; the sleeve rod is arranged in one side of the through cavity; the other side of the through cavity is provided with a sliding sealing component; the sliding sealing assembly comprises a conical telescopic ring, a movable ring body, a sleeved sealing ring, a radial through connecting rod, an axial driving screw, a driving internal thread cylinder and an elastic sealing film; the conical telescopic ring is arranged on the other side in the through cavity; the outer end of the conical telescopic ring is arranged between the flange ring body and the valve body, and the inner end of the conical telescopic ring is provided with the movable ring body; a sleeve sealing ring is arranged on the inner side of the movable ring body; the upper side and the lower side of the movable ring body are respectively provided with a radial through connecting rod; a sealing groove is respectively arranged in the upper side and the lower side of the valve body; two sides of the sealing groove are respectively provided with a clamping sliding groove; one end of the radial through connecting rod is fixed on the outer side surface of the movable ring body, and the other end of the radial through connecting rod sequentially penetrates through the sealing groove and the clamping sliding groove and then extends to the outside of the valve body; the radial through connecting rod is axially and slidably connected to the sealing groove and the clamping sliding groove of the valve body; an elastic sealing film is arranged in the sealing groove; the periphery of the outer end of the elastic sealing film is hermetically connected to the periphery of the radial through connecting rod, and the inner end of the elastic sealing film is hermetically connected to the peripheral inner wall of the sealing groove; the other end of the radial through connecting rod is vertically connected with an axial driving screw rod; the upper side and the lower side of the valve body are respectively and rotationally clamped with a driving internal thread cylinder; the axial driving screw is in threaded connection with the driving internal thread cylinder; the driving internal thread cylinder rotates to drive the axial driving screw to move, the axial driving screw drives the radial penetrating rod to move, the radial penetrating rod drives the moving ring body and the sleeving sealing ring to move, and the sleeving sealing ring is movably, sleeved and hermetically connected to the outer side of the periphery of the sleeving rod; the outer ends of the driving internal thread cylinders are respectively provided with a connecting ring; the outer sides of the periphery of the connecting ring are provided with limiting ring grooves; a driven gear ring is arranged in the limiting ring groove; the inner side of the driving ring is provided with a driving gear ring; the driving ring is sleeved on the outer side of the periphery of the valve body and is positioned on the outer side of the connecting ring; the driving gear ring of the driving ring is meshed and connected with the outer side of the driven gear ring of the connecting ring; the connecting ring is provided with a through channel penetrating through two ends of the connecting ring, and the through channel is communicated with the driving internal thread cylinder.
2. The synchronously driven fire valve as recited in claim 1, wherein the outer portions of the upper and lower sides of the valve body are respectively provided with a positioning clip column; the outer sides of the periphery of the driving internal thread cylinder are provided with annular clamping grooves; the positioning clamping column is clamped in the annular clamping groove.
3. The synchronously driven fire valve as recited in claim 1, wherein said radial through-connecting rod is provided with a clamping block; the two sides of the clamping block are in sliding butt joint with the clamping sliding grooves of the valve body.
4. The synchronously-driven fire valve as recited in claim 1, wherein said female seal ring is made of a high-elasticity rubber material.
5. The synchronously driven fire valve as recited in claim 1, wherein an annular sealing ring is provided at an outer end of said tapered extension ring; the annular sealing ring is clamped and installed between the flange ring body and the valve body; the flange ring body is connected with the valve body through a screw rod.
6. A synchronously actuated fire valve as defined in claim 1, wherein said resilient closure member is formed of a rubber material.
7. A synchronously actuated fire valve as defined in claim 1 wherein said tapered extension ring is formed of a bellows material.
8. The synchronously-driven fire valve as recited in claim 1, wherein said extension rod is mounted in parallel at the center of the through cavity by a connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387668.5A CN111059311B (en) | 2019-12-30 | 2019-12-30 | Synchronous drive type fire-fighting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387668.5A CN111059311B (en) | 2019-12-30 | 2019-12-30 | Synchronous drive type fire-fighting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111059311A true CN111059311A (en) | 2020-04-24 |
| CN111059311B CN111059311B (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911387668.5A Active CN111059311B (en) | 2019-12-30 | 2019-12-30 | Synchronous drive type fire-fighting valve |
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| Country | Link |
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| CN (1) | CN111059311B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412386A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Sliding regulation type oil casing plugging sealer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69319279T2 (en) * | 1992-06-09 | 1998-11-05 | Esko A Riikonen | Interchangeable pinch valve |
| CN201982702U (en) * | 2011-03-23 | 2011-09-21 | 宝山钢铁股份有限公司 | Pipeline stop valve |
| CN106224591A (en) * | 2016-08-29 | 2016-12-14 | 约翰斯顿流体科技（无锡）有限公司 | A kind of novel fire-fighting by-pass valve |
| CN107084252A (en) * | 2017-06-08 | 2017-08-22 | 江苏远洋阀门智控股份有限公司 | A kind of stop valve with over-voltage protecting function |
| CN108757967A (en) * | 2018-05-30 | 2018-11-06 | 湖州师范学院 | A kind of automatic curtain valve mechanism |
-
2019
- 2019-12-30 CN CN201911387668.5A patent/CN111059311B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69319279T2 (en) * | 1992-06-09 | 1998-11-05 | Esko A Riikonen | Interchangeable pinch valve |
| CN201982702U (en) * | 2011-03-23 | 2011-09-21 | 宝山钢铁股份有限公司 | Pipeline stop valve |
| CN106224591A (en) * | 2016-08-29 | 2016-12-14 | 约翰斯顿流体科技（无锡）有限公司 | A kind of novel fire-fighting by-pass valve |
| CN107084252A (en) * | 2017-06-08 | 2017-08-22 | 江苏远洋阀门智控股份有限公司 | A kind of stop valve with over-voltage protecting function |
| CN108757967A (en) * | 2018-05-30 | 2018-11-06 | 湖州师范学院 | A kind of automatic curtain valve mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412386A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Sliding regulation type oil casing plugging sealer |
| CN112412386B (en) * | 2020-11-29 | 2023-02-24 | 江苏力克石油机械有限公司 | Sliding regulation type oil casing plugging sealer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111059311B (en) | 2021-10-08 |
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