CN208546554U - PE ball valve self closing device - Google Patents
PE ball valve self closing device Download PDFInfo
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- CN208546554U CN208546554U CN201820924937.1U CN201820924937U CN208546554U CN 208546554 U CN208546554 U CN 208546554U CN 201820924937 U CN201820924937 U CN 201820924937U CN 208546554 U CN208546554 U CN 208546554U
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- ball valve
- teeth portion
- upper shaft
- closing device
- end axis
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Abstract
The utility model discloses a kind of PE ball valve self closing devices, the upper shaft including being connected with valve rod, lower end axis, the first teeth portion, the second teeth portion, the stored energy mechanism being partially connected with upper shaft, and lower end axis is connected by connector with the valve head of PE ball valve；When applying external force rotation upper shaft on valve rod manually, lower end axis is rotated with, and opens PE ball valve, and the stored energy mechanism rotates with it storage energy, at this time the first teeth portion and the engagement of the second teeth portion；When the external world sends electric signal to the second teeth portion and is detached from the first teeth portion, the first wind spring and the second wind spring release energy and lower end axis are driven to reversely rotate, and close PE ball valve.The utility model is to realize that being automatically closed for PE ball valve creates condition under the action of controlling release plane scroll spring elastic potential energy by push-pull electromagnet, can meet the needs that wisdom gas ductwork remotely controls rapid-closure damper in emergency；Structure is simple, easy for installation, can be installed additional on common PE valve, has versatility and practicability.
Description
Technical field
The utility model belongs to valve field, more particularly, to a kind of PE ball valve self closing device.
Background technique
Under the overall background that Process of Urbanization Construction and energy-saving and emission-reduction work quickly propel, gas-fired vacuum furnace laying mileage also exists
Rapid growth, the pipeline in pipeline network of fuel gas in city using high density PE material pipeline and valve is more and more, because it is with corrosion resistant
A series of features such as erosion, long-life, low flow resistance have the tendency that gradually replacing previous steel pipe network.However, with gas pipe
The security risk of the rapid growth of net mileage number, leakage and explosion is consequently increased.Compare the long defeated main line operation of existing natural gas
Safety monitoring technology application, it is obviously weak that urban pipe network runs surveillance and control measure, and PE pipe network is quasi- because of core component and the relevant technologies
It is standby insufficient, it can not especially adapt to pipe network automatic running and security monitoring demand.
With the progress of industrial technology, various energy deliveries, raw material supply is increasingly dependent on pipe special.Such as pipeline day
Using for right gas is universal, and the pipeline in pipeline network of fuel gas in city using high density PE material pipeline and valve is more and more, because of it
Have the characteristics that corrosion-resistant, long-life, low flow resistance etc. are a series of, has the tendency that gradually replacing previous steel pipe network.However, natural gas
It is inflammable and explosive, have risk, once occur leakage will grave danger people life property safety, cause great economy to damage
It loses.Therefore, natural gas line valve is closed in time to have great significance for control leakage.Traditional steel valve using it is pneumatic,
The electronic, mode of surging manipulates valve, there is expensive, the problems such as poor reliability, energy supply is unstable, and can not
Devices enough to be matched with PE pipeline parameter, that PE valve is switched that self-operated type not can be achieved again at present.
Utility model content
For overcome the deficiencies in the prior art, the utility model provide a kind of response it is fast, once gas leakage problem occurs
It can timely rapid-closure damper, PE ball valve self closing device without human intervention.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of PE ball valve self closing device, packet
The upper shaft for being connected with valve rod is included, the lower end axis being removably connected to below upper shaft is connected to the first tooth of upper shaft periphery
Portion can engage the second teeth portion for preventing it from rotating, the stored energy mechanism being partially connected with upper shaft, the lower end axis with the first teeth portion
It is connected by connector with the valve head of PE ball valve；When applying external force rotation upper shaft on valve rod manually, lower end axis is rotated with,
PE ball valve is opened, the stored energy mechanism rotates with it storage energy, at this time the first teeth portion and the engagement of the second teeth portion；In the external world to
When two teeth portion transmission electric signal is detached from the first teeth portion, first wind spring and the second wind spring release energy and drive lower end axis anti-
To rotation, PE ball valve is closed.
Further, the stored energy mechanism include be sheathed on upper shaft periphery and the first coupled wind spring of one end, if
In the pedestal of upper shaft and lower end shaft connection place, be sheathed on the second wind spring of lower end axis periphery, one end of second wind spring with
Pedestal is connected.
The present invention drives PE ball valve to rotate so that PE ball valve is in the open state by can be manually rotated valve rod when in use, this
When under the action of the second teeth portion blocks the first teeth portion so that the first wind spring and the second wind spring curling storage elastic potential energy, first
Wind spring and the second wind spring increase its output torque, and upper and lower position is distributed the balance that power can be achieved, effectively avoids stuck phenomenon
Occur；When generation gas leakage needs to close PE ball valve, electric signal can be remotely sent, the second teeth portion is detached from the first tooth
Portion, discharges the elastic potential energy of the first wind spring and the storage of the second wind spring, and PE ball valve is driven to turn to closed state；Entire movement is rung
Should fastly, energy rapid-closure damper, operates in time in a short time, and movement is effective, it is possible to prevente effectively from generation large area combustion gas
The generation of incident of leakage.
Further, the pedestal is the slab construction for carrying the first wind spring, and center is equipped with and passes through for upper shaft
Through-hole, the one week downwardly convex axle sleeve formed for being arranged the second wind spring in the through-hole edge, close to axle sleeve position be equipped with is used for
Card sets the baffle of second wind spring one end.
Further, it is fixedly connected with upper cover above the pedestal, first wind spring inner end is connected with upper shaft, outer end
It is connected with the first card slot in upper cover；Lower cover is equipped with below the pedestal, second wind spring inner end is connected with pedestal, outer end and
The second card slot in lower cover is connected.
Further, first teeth portion is ratchet, and second teeth portion is at least two be connected on control mechanism
Triangle block structure, the control mechanism include the connecting plate contour with the first teeth portion, set on connecting plate lower surface elastic component and
The electromagnet matched with connecting plate, when electromagnet is powered, the connecting plate moves down compression elastic piece with electromagnet, described
Second teeth portion is detached from the first teeth portion；The triangle block structure is rotatably connected on connecting plate by shaft, and and connecting plate
Between be connected with bullet part.Second teeth portion is more flexible, and small-scale rotation, and the setting of bullet part can occur with opposing connections
Guarantee to reset in time after it is pushed by the first teeth portion, guarantees effective engagement to the first teeth portion；Second teeth portion is at least two
Triangle block structure makes the first teeth portion be not easy to break, and improves the service life of device.
Further, the lower cover bottom surface is connected at least two support shafts, and support shaft bottom end is connected to fixed plate；It is described
One end of elastic component is connected with the support rod being set in fixed plate.
Further, cross key is formed on the upper shaft bottom, is equipped at the top of the lower end axis and cooperates with the cross key
Cross recess；Or cross recess is formed on the upper shaft bottom, is equipped with the cross key cooperated with the cross recess at the top of the lower end axis.On
End axis can drive lower end axis to rotate synchronously, and connection structure is firm, and connection type is simple and effective.
Further, the connector includes the portion of upper body being connected with lower end axis and the lower body that is connected with valve head, described
Portion of upper body is centrally formed the jack protruded into for lower end axis, which is formed radially the flat recess that length is greater than jack outer diameter；It is described
Lower body, which is formed, can be sheathed on tube-in-tube structure outside valve head, cooperate with valve head rotation stop, and the top of tube-in-tube structure formed it is recessed
Fall into slot.Being bonded for valve head and connector may be implemented in sleeve and recessed groove cooperation, be effectively ensured valve head and connector only
Turn cooperation, and the setting of connector portion of upper body and lower body different structure is so that the PE ball valve of different model only needs to change company
Fitting can be adapted to the self closing device of the utility model, and adaptability is wider, reduce use cost.
Further, the valve head is connected by retarder with rotary shaft, and rotary shaft lower end is connect with PE ball valve.
Further, the shell for coating PE ball valve self closing device is connected with by bearing on the upper shaft,
The valve rod at least partly stretches out shell.Upper shaft, which is connected by bearing with shell, can not only reduce friction, be allowed to close province
Power, to be automatically closed effect more preferable, and shell is close to the design of retarder shape, and beautiful shape saves material, can play guarantor
Protect the effect of internal structure.
The utility model drives upper shaft and lower end axis to rotate by rotary valve rod when in use, passes through with lower end axis and connect
The connected valve head of part also rotates with it, valve head gear, intermediate gear and the arrow gear being arranged in valve head drive retarder, and
Under the action of the arrow gear drive rotary shaft rotation, while the rotary shaft driven PE valve rotate so that PE valve be in beat
Open state, the first teeth portion rotates and makes to be arranged under the supporting role of the second teeth portion in upper shaft and lower end shaft connection place at this time
The first wind spring and the second wind spring store elastic potential energy；When needing to close PE ball valve, remotely it is powered to electromagnet, in electromagnet
It is magnetic pull link block under the action of, and driven the second teeth portion being arranged on the link block by link block while being glided, make
The elastic potential energy that the first teeth portion discharges the first wind spring and the storage of the second wind spring under the supporting role without second teeth portion is obtained, together
When by retarder the torque that elastic potential energy output is discharged by first wind spring and the second wind spring will be amplified and will be transferred to rotary shaft,
PE valve is driven to close by the rotary shaft.
The beneficial effects of the utility model are: the present invention under the cooperation of each structure, is released by push-pull electromagnet control
It puts under the action of plane scroll spring elastic potential energy to realize that being automatically closed for PE ball valve creates condition, wisdom combustion gas can be met
Pipe network remotely controls the needs of rapid-closure damper in emergency；Structure is simple, easy for installation, can be in common PE valve
On installed additional, have extensive versatility and practicability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the utility model and PE ball valve cooperate (with shell).
Fig. 2 is the structural schematic diagram of the utility model and the cooperation of PE ball valve.
Fig. 3 is the overlooking structure diagram of the utility model and the cooperation of PE ball valve.
Fig. 4 is the side structure schematic view of the utility model and the cooperation of PE ball valve.
Fig. 5 is the A-A the schematic diagram of the section structure in Fig. 4.
Fig. 6 is schematic enlarged-scale view at the A in Fig. 5.
Fig. 7 is the structural schematic diagram one of the utility model.
Fig. 8 is the part-structure of the utility model and the fit structure schematic diagram of retarder.
Fig. 9 is the partial structure diagram of the utility model.
Figure 10 is the part mating configuration schematic diagram of the utility model retarder and rotary shaft.
Figure 11 is the structural schematic diagram of the utility model upper shaft.
Figure 12 is the structural schematic diagram of the utility model lower end axis.
Figure 13 is the partial structure diagram two of the utility model.
Figure 14 is the partial structure diagram three of the utility model.
Figure 15 is the structural schematic diagram one of the utility model connector.
Figure 16 is the structural schematic diagram two of the utility model connector.
Figure 17 is the partial structure diagram four of the utility model.
Figure 18 is the structural schematic diagram of the utility model upper cover.
Figure 19 is the structural schematic diagram one of the utility model pedestal.
Figure 20 is the structural schematic diagram two of the utility model pedestal.
Specific embodiment
In order to make those skilled in the art better understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical solutions in the embodiments of the present invention are clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
As shown in Fig. 1-2 0, a kind of PE ball valve self closing device, including valve rod 1, the upper shaft 2 being connect with the valve rod 1,
It is connected with lower end axis 3 in the lower end of upper shaft 2, which is connect with valve head 81 by connector 7, and valve head 81 passes through deceleration
Device 83 is connect with rotary shaft 82, and 82 lower end of rotary shaft is connect with PE ball valve 8.
As shown in Figure 11,12, the bottom end of upper shaft 2 made of 20Cr material forms cross recess 21, the phase of cross recess 21
To offering mounting hole 23 on two sidewalls, the cross key 31 that cross recess 21 can be inserted formed on the top of lower end axis 3, when assembly,
Pin is fixedly connected after can passing through upper shaft 2 with self installation hole 23 with lower end axis 3.Upper shaft 2 be multi-diameter shaft, be also provided with
The perforative intensification slot 25 of cross recess 21, and the keyway 24 for fixing the first teeth portion 4.It can certainly be by 2 bottom end of upper shaft
Cross recess change to the top of lower end axis 3, and the cross bond structure on 3 top of lower end axis is changed into upper shaft bottom end.
The first teeth portion 4 is fixedly connected on the keyway 24 of upper shaft 2, in this present embodiment, the first teeth portion 4 is to be fixedly connected
The number of teeth of ratchet in 2 periphery of upper shaft, ratchet is z=24, and the junction of upper shaft 2 and lower end axis 3 is provided with pedestal 62,
As shown in Figure 19,20, pedestal 62 is flange arrangement comprising for carrying the slab construction of the first wind spring 61, the center of plate
Form the through-hole 621 passed through for upper shaft 2, the one week downwardly convex formation axle sleeve 622 in edge of through-hole 621, close to axle sleeve 622
Position is vertically connected with the arc block plate 623 being arranged concentrically with axle sleeve 622 with plate.
As shown in figure 17, the first wind spring 61 is in this present embodiment plane scroll spring, width 1.8mm, with a thickness of
20mm is set in the periphery of upper shaft 2, and the inner end of the first wind spring 61, which is wrapped in the intensification slot 25 of upper shaft 2, realizes the first volume
The outer end of the connection of spring 61 and upper shaft 2, the first wind spring 61 is connect with upper cover 64, as shown in figure 18, is formed in upper cover 64
One card slot 641, specifically, 64 inner ring symmetric position of upper cover formed two the first card slots, by substantially in expand outwardly it is trapezoidal
Gap slot and the triangle fixture block 642 for the opening that gap slot is arranged in form, and are formed between triangle fixture block 642 and gap slot
For the gap that 61 outer end of the first wind spring is caught in, the position opposite with notch trench bottom of triangle fixture block 642 forms one for holding
Set the space of 61 end of the first wind spring bending.Above structure not only stable connection, and it is convenient for disassembly and assembly.
Upper cover 64 is fixedly connected with the upper surface of pedestal 62.The lower section of pedestal 62 is provided with lower cover 65, the second 63 sets of wind spring
It is located at 622 periphery of axle sleeve, inner end is intertwined and connected with baffle 623, and outer end is connected with the second card slot inside lower cover 65, and second
The structure of card slot is identical as the structure of the first card slot.The bottom surface of lower cover 65 is circumferentially connected with four support shafts 91, support shaft
91 bottom end is connect with fixed plate 9, and retarder 83 is connected with below fixed plate 9, and fixed plate 9 and retarder 83 are matched zero
Part, it is only necessary to be screwed, additional processing charges can be saved.Retarder 83 is equipped with valve head gear, center tooth
Wheel and arrow gear form the discontinuous empty tooth position 831 of a teeth portion on intermediate gear, which can not be driven torsion,
In artificial opening/closing PE ball valve, empty tooth position 831 is to have rotated to position herein, the terminal that can not be rotated further by, it is possible to prevente effectively from
Inordinate rotation, to operator one good feel prompt.
Lower end axis 3 is connected by connector 7 with the valve head 81 of PE ball valve 8, and connector 7 includes portion of upper body 71 and lower body
72, the center of portion of upper body 71 forms the jack 711 that can be inserted into 3 lower end of lower end axis, and the radial direction of the jack 711 also forms length
Degree is greater than the flat recess 712 of the outer diameter of jack 711；What the center formation of lower body 72 can be adapted to 81 outer shape of valve head
Tube-in-tube structure, the top of tube-in-tube structure form the recessed groove 721 of "-" type, connector 7 are effectively ensured and the rotation stop of valve head 81 is matched
It closes.
The control mechanism with the cooperation of the first teeth portion 4 is additionally provided in fixed plate 9 comprising be fixedly connected in fixed plate 9
Two parallel support rods 92, the top of two support rods 92 are connected separately with elastic component 53, the other end of elastic component 53 and company
Fishplate bar 52 is fixedly connected, and connecting plate 52 and the first teeth portion 4 are contour, and connecting plate 52 is provided with two close to the one side of the first teeth portion 4
A triangle block structure, as the second teeth portion 51, triangle block structure by the shaft 511 parallel with support rod 92 rotatably
It is connected on connecting plate 52, the tip of triangle block structure is engaged with the first teeth portion 4, and the one side parallel with connecting plate 52 is logical
It crosses bullet part 512 to be connected with connecting plate 52, to allow triangle block structure that can generate certain offset deviation in all directions, have
Effect guarantees the cooperation of itself and the first teeth portion 4.Electromagnet 54 is also connected with by bracket 541 in fixed plate 9, electromagnet 54 is double couplings
It closes minisize dc traction and runs through frame-type suction push-pull electromagnet, the lower section and connecting plate 52 for being located at connecting plate 52 match
It closes, so as to save energy by the gravity of electromagnet itself, reduces the stuck probability of happening of triangle block structure.
In order to achieve the purpose that dust-proof, waterproof, explosion-proof, in the outside of PE ball valve self closing device cladding protection shell
93, it is located at the position above the first teeth portion 4 in upper shaft 2 and passes through 22 connected with outer casing 93 of bearing, the bottom surface of shell 93 and fixed plate 9
Offset connection, the first teeth portion 4, second teeth portion 51 etc. are coated in, valve rod 1 is exposed to outside shell 93.
In use, can be manually rotated valve rod 1 by external force, 2 synchronous rotary of upper shaft is driven, the be connected on upper shaft 2
One wind spring 61 rotates with it, and drives upper cover 64 to rotate after rotary tightening, and then band moving base 62 rotates, since lower cover 65 is solid
It is fixed, so that the second wind spring 63 also follows rotary tightening, elastic potential energy is stored, though and then upper shaft 2 rotates the first teeth portion 4 at this time,
But it is always maintained at the state engaged with the second teeth portion 51.
When leakage, which occurs, for combustion gas needs to close PE ball valve 8, the long-range electromagnet 54 that controls is powered, and the magnetic of electromagnet 54 is drawn
Dynamic connecting plate 52 moves down, and drives two corner block structure synchronizations on connecting plate 52 to move down compression elastic piece 53, so that the second tooth
Portion 51 is detached from the first teeth portion 4, and under the supporting role for losing the second teeth portion 51, the rotation of the first teeth portion 4 discharges 61 He of the first wind spring
The elastic potential energy of second wind spring 63 storage, while the first wind spring 61 and the second wind spring 63 are discharged by elastic potential energy by retarder 83
The torque of output amplifies and is transferred to rotary shaft 82, drives PE valve 8 to close by the rotary shaft 82.General PE ball-valve valve rod only has
90 degree of folding angle, by number of teeth corresponding relationship is driven, retarder and self closing device cooperate in the present invention, manually and elastic
The mechanism rotation that potential energy release drives, may be implemented rotating folding angle greater than 90 °.After completing closing motion, electromagnet 54
Power-off, under the restoring force effect of elastic component 53, the second teeth portion 51 sets back to be engaged with the first teeth portion 4.
Above-mentioned specific embodiment is used to illustrate the utility model, rather than limits the utility model,
In the spirit and scope of protection of the claims of the utility model, to any modifications and changes that the utility model is made, all fall
Enter the protection scope of the utility model.
Claims (10)
1. a kind of PE ball valve self closing device, it is characterised in that: the upper shaft (2) including being connected with valve rod (1) detachably connects
The lower end axis (3) being connected to below upper shaft (2) is connected to first teeth portion (4) of upper shaft (2) periphery, can be with the first teeth portion (4)
The second teeth portion (51) that engagement prevents it from rotating, the stored energy mechanism being partially connected with upper shaft (2), the lower end axis (3) pass through
Connector (7) is connected with the valve head (81) of PE ball valve (8)；When applying external force rotation upper shaft (2) on valve rod (1) manually, under
End axis (3) rotates with, and opens PE ball valve (8), and the stored energy mechanism rotates with it storage energy, at this time the first teeth portion (4) and
Second teeth portion (51) engagement；When the external world sends electric signal to the second teeth portion (51) and is detached from the first teeth portion (4), the energy storage
Mechanism, which releases energy, drives lower end axis (3) to reversely rotate, and closes PE ball valve (8).
2. PE ball valve self closing device according to claim 1, it is characterised in that: the stored energy mechanism includes being sheathed on
Upper shaft (2) periphery and coupled the first wind spring (61) in one end are set to the base of upper shaft (2) and lower end axis (3) junction
Seat (62), is sheathed on second wind spring (63) of lower end axis (3) periphery, one end and pedestal (62) phase of second wind spring (63)
Even.
3. PE ball valve self closing device according to claim 2, it is characterised in that: the pedestal (62) is for carrying
The slab construction of first wind spring (61), center are equipped with the through-hole (621) passed through for upper shaft (2), through-hole (621) edge one
Week the downwardly convex axle sleeve (622) formed for being arranged the second wind spring (63), be equipped with close to axle sleeve (622) position and set for card
The baffle (623) of two wind springs (63) one end.
4. PE ball valve self closing device according to claim 2, it is characterised in that: fixed above the pedestal (62) to connect
It is connected to upper cover (64), the first wind spring (61) inner end is connected with upper shaft (2), the first card slot in outer end and upper cover (64)
(641) it is connected；Lower cover (65) are equipped with below the pedestal (62), the second wind spring (63) inner end is connected with pedestal (62), outside
End is connected with the second card slot in lower cover (65).
5. PE ball valve self closing device according to claim 4, it is characterised in that: first teeth portion (4) is ratchet,
Second teeth portion (51) is at least two triangle block structures being connected on control mechanism, and the control mechanism includes and first
The contour connecting plate (52) of teeth portion (4), be set to connecting plate (52) lower surface elastic component (53) and matched with connecting plate (52)
Electromagnet (54), in electromagnet (54) be powered when, the connecting plate (52) moves down compression elastic piece with electromagnet (54)
(53), second teeth portion (51) is detached from the first teeth portion (4)；The triangle block structure is rotatably coupled by shaft (511)
In on connecting plate (52), and bullet part (512) are connected between connecting plate (52).
6. PE ball valve self closing device according to claim 5, it is characterised in that: lower cover (65) bottom surface at least
Two support shafts (91) are connected, and support shaft (91) bottom end is connected to fixed plate (9)；One end of the elastic component (53) be set to it is solid
Support rod (92) on fixed board (9) is connected.
7. PE ball valve self closing device according to claim 1, it is characterised in that: upper shaft (2) bottom is formed
Cross key, lower end axis (3) top are equipped with the cross recess cooperated with the cross key；Or upper shaft (2) bottom forms ten
Word slot (21), lower end axis (3) top are equipped with the cross key (31) cooperated with the cross recess (21).
8. PE ball valve self closing device according to claim 1, it is characterised in that: the connector (7) includes under
The lower body (72) end axis (3) connected portion of upper body (71) and be connected with valve head (81), the portion of upper body (71) are centrally formed confession
The jack (711) that lower end axis (3) protrudes into, the jack (711) are formed radially the flat recess that length is greater than jack (711) outer diameter
(712)；The lower body (72), which is formed, can be sheathed on the external tube-in-tube structure of valve head (81), cooperate with valve head (81) rotation stop,
And recessed groove (721) are formed on the top of tube-in-tube structure.
9. PE ball valve self closing device according to claim 1, it is characterised in that: the valve head (81) passes through retarder
(83) it is connected with rotary shaft (82), rotary shaft (82) lower end is connect with PE ball valve (8).
10. PE ball valve self closing device according to claim 1, it is characterised in that: pass through axis on the upper shaft (2)
It holds (22) and is connected with shell (93) for coating PE ball valve self closing device, the valve rod (1) at least partly stretches out shell
(93)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820924937.1U CN208546554U (en) | 2018-06-14 | 2018-06-14 | PE ball valve self closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820924937.1U CN208546554U (en) | 2018-06-14 | 2018-06-14 | PE ball valve self closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208546554U true CN208546554U (en) | 2019-02-26 |
Family
ID=65422663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820924937.1U Active CN208546554U (en) | 2018-06-14 | 2018-06-14 | PE ball valve self closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208546554U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375109A (en) * | 2019-07-04 | 2019-10-25 | 王朝阳 | Gas leakage automatic shutdown system applied to natural gas safe transport |
| CN111677904A (en) * | 2020-06-22 | 2020-09-18 | 何浩南 | Ball valve convenient to maintain |
| CN116146754A (en) * | 2023-04-14 | 2023-05-23 | 陕西航天泵阀科技集团有限公司 | Emergency stop valve |
-
2018
- 2018-06-14 CN CN201820924937.1U patent/CN208546554U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375109A (en) * | 2019-07-04 | 2019-10-25 | 王朝阳 | Gas leakage automatic shutdown system applied to natural gas safe transport |
| CN110375109B (en) * | 2019-07-04 | 2020-12-11 | 鑫鼎新能源有限公司 | Gas leakage automatic circuit breaking system applied to safe natural gas conveying |
| CN111677904A (en) * | 2020-06-22 | 2020-09-18 | 何浩南 | Ball valve convenient to maintain |
| CN116146754A (en) * | 2023-04-14 | 2023-05-23 | 陕西航天泵阀科技集团有限公司 | Emergency stop valve |
| CN116146754B (en) * | 2023-04-14 | 2023-07-04 | 陕西航天泵阀科技集团有限公司 | Emergency stop valve |
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