CN207599215U - A kind of ready-packaged joint for pipe - Google Patents
A kind of ready-packaged joint for pipe Download PDFInfo
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- CN207599215U CN207599215U CN201721546341.4U CN201721546341U CN207599215U CN 207599215 U CN207599215 U CN 207599215U CN 201721546341 U CN201721546341 U CN 201721546341U CN 207599215 U CN207599215 U CN 207599215U
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Abstract
The utility model discloses a kind of ready-packaged joints for pipe, including the first connector and the second connector, and first is respectively equipped with water route in connector and the second connector, further include locking device, the locking device is fixedly connected with the first connector and forms an accommodating cavity, second connector, which can run through the accommodating cavity and seal, to be plugged in the first connector so that water route connects, and second connector forms backing stop structure with locking device；Whether the ready-packaged joint can realize singlehanded installation and removal, and operation is quicker, simple and convenient, and be installed in place very clear, and the ready-packaged joint has leak-proof device, can prevent leak or scald.
Description
Technical field
The utility model is related to kitchen and bath's industries, and in particular to a kind of erection joint for water pipe.
Background technology
Water pipe head is for connection to the component of water pipe, and existing erection joint is primarily present problems with：1st, it needs
Pressing clamping piece on the other hand, pipe fitting is inserted by the other hand, troublesome in poeration and relatively difficult, and is dismantled also cumbersome；2nd, it connects
There is no backing stop structure between head so that the firm poor performance between connector, and whether be installed in place indefinite；3rd, it is anti-without safety
Function, especially hot water pipeline are leaked, if accidentally dismantled, leak or even scald can be caused；4th, peace is checked whether without mark
It is attached to position, it is thus possible to the security risks such as leak can be caused.
Utility model content
The purpose of this utility model is that solving the problems of the prior art, a kind of ready-packaged joint for pipe is provided,
Singlehanded installation and removal can be achieved, operation is quicker, simple and convenient, and whether is installed in place very clear, and the fast-assembling
Connector has leak-proof device, can prevent leak or scald.
To reach above-mentioned purpose, the utility model adopts the following technical solution：
A kind of ready-packaged joint for pipe including the first connector and the second connector, and divides in the first connector and the second connector
Not She You water route, further include locking device, the locking device is fixedly connected with the first connector and forms an accommodating cavity, described
Two connectors, which can run through the accommodating cavity and seal, to be plugged in the first connector so that water route connects, and second connector and locking device
Form backing stop structure.
Further, the locking device includes guide runner, the first spring and spacing collar；Spacing collar connects with first
Head connection；Guide runner is hollow form, be axially movable and rotation stop be set on spacing collar in；First spring is set on to be oriented to and slide
Between block and the first connector；Second connector periphery is equipped with rotatable helical teeth, which includes reversed and setting up and down first
Tooth and the second tooth, and the second tooth is towards guide runner；The third tooth of the second tooth is provided on guide runner；Spacing collar inner wall
Equipped with card slot and supply the perforative sliding slot of helical teeth；When second connector the first connector of grafting, by pressing the second connector, in third tooth
With the first tooth being made to be connected in card slot under the dislocation effect of the second tooth or helical teeth being made to skid off sliding slot.
Further, the periphery of the guide runner is equipped with limit rib, is equipped in the spacing collar and is placed in for limit rib
Limiting slot, and the length of limit rib be less than limiting slot length.
Further, the card slot and sliding slot are arranged at intervals.
Further, the periphery of second connector is equipped with rotatable snap ring, and the helical teeth is set on the snap ring.
Further, first connector is water supply connector, is equipped with an intake antrum, anti-neglected loading is equipped in the intake antrum
It puts, which includes core, second spring, cover；Cover is set on the water inlet end of intake antrum, and the cover is equipped with inlet opening
With a through-hole；Core has an axostylus axostyle, and the end of axostylus axostyle is stretched in the through-hole of cover, and the head of axostylus axostyle is equipped with closure part, the envelope
Stifled portion is set on the water outlet of intake antrum；Second spring is socketed on axostylus axostyle, both ends difference contact closure part and cover；Described
Two connectors are water outlet connector, when it is with the first connector grafting and contact closure part is to open the water between intake antrum and the second connector
Road connects；When the second connector is far from closure part, closure part seals the intake antrum.
Further, the leak-proof device further includes housing, the housing be set on intake antrum in and with the inner wall shape of intake antrum
Into sealing, the cover is set on the water inlet end of housing, and the core is loaded in housing, and closure part can be with the water outlet phase of housing
To sealing.
Further, the water inlet end of second connector was equipped with water stent, this cross water stent can closure part described in contact,
And this is crossed water branch and is provided with the water hole connected with the water route inside the second connector.
Further, gasket is further included, the gasket is set between water inlet end and the cover of the first connector, and cover
It offsets setting with the gasket.
Further, mark component is further included, the mark component includes displaying block and observation window, and the displaying block is set
In on the second connector, the observation window is opened on the side wall of locking device.
Technical solution described in the utility model is relative to the prior art, the advantageous effect of acquirement：
1st, ready-packaged joint described in the utility model has locking device, when the second connector is through accommodating cavity and directly slotting
In in the first connector, the second connector is formed with locking device and is clamped, and causes the second connector without departing from the first connector so that
Installation between connector is easier, and reliability and fastness are more preferably.
2nd, the utility model is when second connector the first connector of grafting, by pressing the second connector, in third tooth and second
The first tooth is made to be connected in card slot under the dislocation effect of tooth or helical teeth is made to skid off sliding slot；In this way, it can be connect by one hand pressing second
Head carry out connector between installation and removal, so as to fulfill faster, more simply and easily installation, maintenance or replace tap.
3rd, ready-packaged joint described in the utility model includes leak-proof device, is installed in the first connector, when the first connector
During for water supply connector, the closure part of core blocks the water outlet of intake antrum under the action of the spring, so that in intake antrum
Water cannot leak outside, and the error that occurs can be avoided during installation or removal to cause leak or be scald.
4th, ready-packaged joint described in the utility model further includes mark component, and displaying block is set on the second connector, observation window
Mouth is opened on the side wall of locking device, when installed, display block identification can be seen from observation window, so as to simple
Ground sees whether to be installed in place.
5th, the periphery of the second connector described in the utility model is equipped with rotatable snap ring, and the helical teeth is set on the snap ring,
There is certain interval at the attaching of the snap ring and the second connector, therefore snap ring will not be stuck, but in third tooth and the second tooth
Dislocation effect is lower to be rotated.
6th, the periphery of guide runner described in the utility model is equipped with limit rib, is equipped in the spacing collar and is put for limit rib
The limiting slot entered, and the length of limit rib is less than the length of limiting slot, in this way, guide runner can be made to form circumferential rotation stop, but can
Make its axial movement.
7th, leak-proof device described in the utility model further includes housing, therefore the components such as core can be loaded in housing and form one
Modular assembly, the module can facilitate installation, and water sealing effect can be more preferably directly loaded on being used in the first connector.
8th, the water inlet end of the second connector described in the utility model was equipped with water stent, when the second connector and the first joint sealing
During grafting, water top of support is crossed to closure part so that core is moved to cover direction, so that the water of intake antrum is from crossing water branch
The water hole of frame is entered in the water route inside the second connector.
9th, gasket described in the utility model is set between water inlet end and the cover of the first connector, and cover and the gasket
Offset setting；In this way, leak between water inlet pipe and the first connector can be prevented, and ensure flow from the inlet opening of cover enter into
Water cavity, good sealing.
10th, the utility model card slot and sliding slot are arranged at intervals, in this way, can be operated by single depression realize the first connector and
The grafting or dismounting of second connector operate more convenient and hommization.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms one of the utility model
Point, the illustrative embodiments and their description of the utility model are not formed for explaining the utility model to the utility model
Improper restriction.
In the accompanying drawings：
Fig. 1 is the dimensional decomposition structure diagram of ready-packaged joint described in the utility model；
Fig. 2 is the diagrammatic cross-section of the first state of ready-packaged joint described in the utility model；
Fig. 3 is the diagrammatic cross-section of the second state of ready-packaged joint described in the utility model；
Fig. 4 is the decomposition texture schematic diagram of the first connector described in the utility model and locking device；
Fig. 5 is one of principle schematic of ready-packaged joint described in the utility model；
Fig. 6 is the two of the principle schematic of ready-packaged joint described in the utility model；
Fig. 7 is the three of the principle schematic of ready-packaged joint described in the utility model；
Fig. 8 is the dimensional decomposition structure diagram of leak-proof device described in the utility model.
Attached drawing marks explanation：First connector -1, the second connector -2, locking device -3, leak-proof device -4, gasket -5, into
Water cavity -11, snap ring -21, helical teeth -22, the first tooth -221, the second tooth -222, excessively water stent -23, water hole -231, displaying block -
24, spacing collar -31, guide runner -32, the first spring -33, card slot -311, sliding slot -312, limiting slot -313, observation window -
314, third tooth -321, limit rib -322, core -41, second spring -42, cover -43, housing -44, axostylus axostyle -411 block
Portion -412, through-hole -431, inlet opening -432.
Specific embodiment
In order to make technical problem to be solved in the utility model, technical solution and advantageous effect clearer, clear, with
Under in conjunction with the accompanying drawings and embodiments, the present invention is further described in detail.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
As shown in Figs. 1-3, a kind of ready-packaged joint for pipe described in the present embodiment, including the first connector 1, the second connector
2nd, locking device 3, wherein：
Water route is respectively equipped in first connector 1 and the second connector 2；The locking device 3 is fixedly connected simultaneously with the first connector 1
Forming an accommodating cavity, second connector 2, which can run through the accommodating cavity and seal, to be plugged in the first connector 1 so that water route connects,
And second connector 2 forms backing stop structure with locking device 3；Specifically, 3 and first connector 1 of locking device described in the present embodiment
It is removably to be fixedly connected, is inserted in when by the second connector 2 through accommodating cavity and directly in the first connector 1, the second connector 2 and lock
Tight device 3 forms clamping, and causes the second connector 2 without departing from the first connector 1 so that the installation between connector is simpler
Just, reliability and fastness be more preferably.
As shown in figures 1 to 6, the locking device 3 described in the present embodiment includes guide runner 32, the first spring 33 and stop collar
Cylinder 31；Wherein：
Spacing collar 31 is connect with the first connector 1, and the present embodiment is is threadedly coupled；
Guide runner 32 be hollow form, be axially movable and rotation stop be set on spacing collar 31 in；
First spring 33 is set between 32 and first connector 1 of guide runner；Since the first spring 33 is hollow form,
Accommodating cavity described above is collectively formed in spacing collar 31, guide runner 32, the first spring 33 and the first connector 1, i.e., second connects
First 2, which may pass through 32 and first spring 33 of guide runner, is plugged into the first connector 1；
Second connector, 2 periphery is equipped with rotatable helical teeth 22, which includes the first reversed and setting up and down tooth 221
With the second tooth 222, and the second tooth 222 is towards guide runner 32；The third tooth of the second tooth 222 is provided on guide runner 32
321；31 inner wall of spacing collar is equipped with card slot 311 and supplies 22 perforative sliding slot 312 of helical teeth；
When 2 the first connector 1 of grafting of the second connector, by pressing the second connector 2, in 321 and second tooth 222 of third tooth
The first tooth 221 is made to be connected in card slot 311 under dislocation effect or helical teeth 22 is made to skid off sliding slot 312；In this way, it can be pressed by one hand
Second connector 2 carry out connector between installation and removal, so as to fulfill faster, more simply and easily installation, maintenance or replace the fire hose
Head.
As shown in figs. 4 and 7, the periphery of guide runner 32 described in the present embodiment is equipped with limit rib 322, the spacing collar
The limiting slot 313 being placed in for limit rib 322 is equipped in 31, and the length of limit rib 322 is less than the length of limiting slot 313, in this way,
Guide runner 32 can be made to form circumferential rotation stop, but its axial movement can be made.
Specifically, card slot 311 described in the present embodiment and sliding slot 312 are arranged at intervals, in this way, can be operated by single depression real
The grafting or dismounting of existing first connector 1 and the second connector 2.
As shown in Figure 1, the periphery of the second connector 2 described in the present embodiment is equipped with rotatable snap ring 21, the helical teeth 22 is set
In on the snap ring 21, there is certain interval, therefore snap ring 21 will not be stuck at the attaching of 21 and second connector 2 of snap ring, but
It is rotated under dislocation effect of the third tooth 321 with the second tooth 222.
As shown in Fig. 2,3,8, in the present embodiment, first connector 1 is water supply connector, is equipped with an intake antrum 11,
Leak-proof device 4 is equipped in the intake antrum 11, which includes core 41, second spring 42, cover 43；Wherein：
Cover 43 is set on the water inlet end of intake antrum 11, and the cover 43 is equipped with 432 and one through-hole 431 of inlet opening；
Core 41 has an axostylus axostyle 411, and the end of axostylus axostyle 411 is stretched in the through-hole 431 of cover 43, the head of axostylus axostyle 411
Equipped with closure part 412, which is set on the water outlet of intake antrum 11；
Second spring 42 is socketed on axostylus axostyle 411, both ends difference contact closure part 412 and cover 43；
Second connector 2 is water outlet connector, when itself and 1 grafting of the first connector and contact closure part 412 are intake with opening
Water route between chamber 11 and the second connector 2 connects；When the second connector 2 is far from closure part 412, closure part 412 seals the water inlet
Chamber 11；
Specifically, as shown in figure 3, when the second connector 2 be inserted into the first connector 1 when, closure part 412 by the second connector 2 into
Water end (W.E.) contact causes core 41 to be moved towards the direction of cover 43, so as to connect the water route between 11 and second connector 2 of intake antrum
It is logical；As shown in Fig. 2, when the second connector 2 is not with the first 1 grafting of connector, the closure part 412 of core 41 is in second spring 42
The lower water outlet for blocking intake antrum 11 of effect, so that the water in intake antrum 11 cannot leak outside, when can avoid installation or removal
The error of generation causes leak or is scald.
Specifically, as shown in Fig. 2,3,8, the leak-proof device 4 further includes housing 44, which is set in intake antrum 11
And sealing is formed with the inner wall of intake antrum 11, the cover 43 is set on the water inlet end of housing 44, and the core 41 is loaded on housing 44
It is interior, and closure part 412 can offset sealing with the water outlet of housing 44；In this way, the leak-proof device 4 can form a modular assembly, directly
It is installed in the first connector 1, facilitates installation, and water sealing effect can be more preferably.
As shown in Figs. 1-3, the water inlet end of the second connector 2 was equipped with water stent 23 described in the present embodiment, this crosses water stent 23
Can closure part 412 described in contact, and this is crossed water stent 23 and is equipped with the water hole 231 that is connected with the water route inside the second connector 2；Such as
This, when the second connector 2 and the sealing grafting of the first connector 1, crosses 23 contact closure part 412 of water stent so that core 41 is to lid
43 direction of body is moved, so that the water of intake antrum 11 is entered from the water hole 231 for crossing water stent 23 inside the second connector 2
In water route.
As shown in Figs. 1-3, the ready-packaged joint described in the present embodiment further includes gasket 5, and the gasket 5 connects set on first
Between first 1 water inlet end and cover 43, and cover 43 and the gasket 5 offset setting；In this way, it can prevent water inlet pipe from being connect with first
Leak between first 1, and ensure that flow enters intake antrum 11, good sealing from the inlet opening of cover 43 432.
As shown in Figure 1, the ready-packaged joint described in the present embodiment further includes mark component, the mark component includes displaying block
24 and observation window 314, the displaying block 24 is set on the second connector 2, and the observation window 314 is opened in locking device 3
On side wall, specifically, the observation window 314 is opened on the side wall of spacing collar 31, in this way, when installed, it can be from sight
It surveys window 314 and sees that displaying block 24 identifies, so as to simply see whether to be installed in place.
The ready-packaged joint for pipe described in the present embodiment, operation principle are as follows：
1st, the assembly and disassembly principle between the first connector 1 and the second connector 2：As illustrated in figs. 5-7, when the second connector 2
Helical teeth 22 is slided into along the sliding slot 312 of spacing collar 31, is touched guide runner 32 and is promoted its direction to the first connector 1
It is mobile, so as to compress the first spring 33, because the second tooth 222 and third tooth 321 are dislocation, therefore snap ring 21 can rotate certain angle
Degree, after loosing one's grip, the first spring 33 springs back guide runner 32, so that snap ring 21 rotates and is connected to the first tooth 221
In the card slot 311 of spacing collar 31, the final backing stop structure realized between the second connector 2 and locking device 3；To be torn open
It unloading, only need to press the second connector 2, principle is same as above, and snap ring 21 can be rotated so that helical teeth 22 is skidded off from sliding slot 312, so as to
Realize the fractionation between the second connector 2 and locking device 3.
2nd, the principle of leak-proof device 4：As shown in Fig. 2, the first state for ready-packaged joint, i.e. the first connector 1 and second connect
First 2 assemble without grafting, and the closure part 412 of core 41 offsets sealing and then closure under the action of second spring 42 with housing 44
The water outlet of intake antrum 11 so that the water in intake antrum 11 cannot leak outside；As shown in figure 3, the second state for ready-packaged joint, i.e.,
Second connector 2 and 1 grafting of the first connector assemble, and closure part 412 causes 41 court of core by 23 contact of water stent of crossing of the second connector 2
It is moved to the direction of cover 43, so that the water of intake antrum 11 enters the second connector 2 from the water hole 231 for crossing water stent 23
In internal water route, i.e., the first connector 1 is connected with the water route of the second connector 2.
The ready-packaged joint for pipe described in the present embodiment, installation process are as follows：
Step 1: the assembling of leak-proof device 4：As shown in figure 8, sealing element is sheathed on to closure part 412 and the shell of core 41
The outer wall of body 44, and core 41 is attached to the inside of housing 44 so that core 41 and housing 44 offset sealing, then second spring
42 are sleeved on the axostylus axostyle 411 of core 41, finally assemble cover 43 and core 41；In this way, the leak-proof device 4 can form one
Module is directly installed on water inlet end that gasket 5 is finally installed in the first connector 1 in the intake antrum 11 in first connector 1
In seal groove, and the gasket 5 and cover 43 is made to offset sealing.
Step 2: the assembling of the first connector 1 and locking device 3：As shown in figure 4, first 32 and first bullet of guide runner
Spring 33 is attached separately in spacing collar 31, and the limit rib 322 of guide runner 32 is caused to be placed in the limiting slot 313 of spacing collar 31
It is interior, finally spacing collar 31 is threadedly coupled with the first connector 1；In practical applications, above-mentioned mounted component can first be locked
Tightly on the wall on the connector of water pipe.
Step 3: the assembly and disassembly of the first connector 1 and the second connector 2：In practical applications, by the second connector 2 directly
It inserts in the assembled component of step 2, specifically slides sliding slot 312 of the helical teeth 22 on the second connector 2 along spacing collar 31
Enter and press to loose one's grip afterwards in place, you can the installation between the first connector 1 and the second connector 2 is realized, when pressing second connects again
First 2, you can realize the dismounting of the second connector 2 and the first connector 1.
The preferred embodiment of the utility model has shown and described in above description, as previously described, it should be understood that this practicality is new
Type is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and available for various other groups
Conjunction, modification and environment, and above-mentioned introduction or the technology of related field can be passed through within the scope of the inventive concept described herein
Or knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, then
It all should be in the protection domain of the appended claims for the utility model.
Claims (10)
1. a kind of ready-packaged joint for pipe, including the first connector and the second connector, and in the first connector and the second connector respectively
Equipped with water route, it is characterised in that：Locking device is further included, the locking device is fixedly connected with the first connector and forms one and houses
Chamber, second connector, which can run through the accommodating cavity and seal, to be plugged in the first connector so that water route connects, and second connector
Backing stop structure is formed with locking device.
2. a kind of ready-packaged joint for pipe as described in claim 1, it is characterised in that：The locking device, which includes being oriented to, to be slided
Block, the first spring and spacing collar；Spacing collar is connect with the first connector；Guide runner is hollow form, be axially movable and
It is set in spacing collar to rotation stop；First spring is set between guide runner and the first connector；Second connector periphery, which is equipped with, to revolve
The helical teeth turned, which includes reversed and setting up and down the first tooth and the second tooth, and the second tooth is towards guide runner；It is oriented to and slides
The third tooth of the second tooth is provided on block；Spacing collar inner wall is equipped with card slot and supplies the perforative sliding slot of helical teeth；When the second connector
During the first connector of grafting, by pressing the second connector, the first tooth is made to be connected in card under the dislocation effect of third tooth and the second tooth
In slot or helical teeth is made to skid off sliding slot.
3. a kind of ready-packaged joint for pipe as claimed in claim 2, it is characterised in that：The periphery of the guide runner is equipped with
Limit rib, the interior limiting slot being equipped with for limit rib merging of the spacing collar, and the length of limit rib is less than the length of limiting slot.
4. a kind of ready-packaged joint for pipe as claimed in claim 2, it is characterised in that：The card slot and sliding slot interval are set
It puts.
5. a kind of ready-packaged joint for pipe as claimed in claim 2, it is characterised in that：The periphery of second connector is equipped with
Rotatable snap ring, the helical teeth are set on the snap ring.
6. a kind of ready-packaged joint for pipe as claimed in claim 1 or 2, it is characterised in that：First connector is water inlet
Connector is equipped with an intake antrum, leak-proof device is equipped in the intake antrum, which includes core, second spring, cover；
Cover is set on the water inlet end of intake antrum, and the cover is equipped with inlet opening and a through-hole；Core has an axostylus axostyle, and the end of axostylus axostyle is stretched
In in the through-hole of cover, the head of axostylus axostyle is equipped with closure part, which is set on the water outlet of intake antrum；Second spring is socketed in
On axostylus axostyle, both ends difference contact closure part and cover；Second connector be water outlet connector, when its with the first connector grafting simultaneously
Contact closure part is connected with opening the water route between intake antrum and the second connector；When the second connector is far from closure part, closure part is close
Seal the intake antrum.
7. a kind of ready-packaged joint for pipe as claimed in claim 6, it is characterised in that：The leak-proof device further includes shell
Body, the housing are set in intake antrum and form sealing with the inner wall of intake antrum, and the cover is set on the water inlet end of housing, the core
Body is loaded in housing, and closure part can offset sealing with the water outlet of housing.
8. a kind of ready-packaged joint for pipe as claimed in claim 6, it is characterised in that：The water inlet end of second connector is set
Had water stent, this cross water stent can closure part described in contact, and this crosses that water branch is provided with and water route inside the second connector connects
Logical water hole.
9. a kind of ready-packaged joint for pipe as claimed in claim 6, it is characterised in that：Further include gasket, the sealing
Pad is between the water inlet end of the first connector and cover, and cover and the gasket offset setting.
10. a kind of ready-packaged joint for pipe as described in claim 1, it is characterised in that：Further include mark component, the mark
Know component and include displaying block and observation window, the displaying block is set on the second connector, and the observation window is opened in locking dress
On the side wall put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721546341.4U CN207599215U (en) | 2017-11-17 | 2017-11-17 | A kind of ready-packaged joint for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721546341.4U CN207599215U (en) | 2017-11-17 | 2017-11-17 | A kind of ready-packaged joint for pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207599215U true CN207599215U (en) | 2018-07-10 |
Family
ID=62760794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721546341.4U Active CN207599215U (en) | 2017-11-17 | 2017-11-17 | A kind of ready-packaged joint for pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207599215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488827A (en) * | 2018-12-29 | 2019-03-19 | 福州品行科技发展有限公司 | Quick coupling |
| CN113566120A (en) * | 2021-07-20 | 2021-10-29 | 杭州依技设备成套工程有限公司 | Non-electric pneumatic automatic switching system in medical liquid oxygen station |
-
2017
- 2017-11-17 CN CN201721546341.4U patent/CN207599215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488827A (en) * | 2018-12-29 | 2019-03-19 | 福州品行科技发展有限公司 | Quick coupling |
| CN113566120A (en) * | 2021-07-20 | 2021-10-29 | 杭州依技设备成套工程有限公司 | Non-electric pneumatic automatic switching system in medical liquid oxygen station |
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