CN208974823U - Multi-sealed check valve and infusion mechanism - Google Patents
Multi-sealed check valve and infusion mechanism Download PDFInfo
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- CN208974823U CN208974823U CN201820801524.4U CN201820801524U CN208974823U CN 208974823 U CN208974823 U CN 208974823U CN 201820801524 U CN201820801524 U CN 201820801524U CN 208974823 U CN208974823 U CN 208974823U
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Abstract
The utility model relates to provide the multi-sealed check valve of one kind and infusion mechanism, multi-sealed check valve includes valve body and spool, valve body is equipped with accommodating chamber and dosing mouth, the first opening and the second opening, the spool is elastic material, the spool is arranged in the accommodating chamber, and first boss is successively equipped at intervals on the side wall of the spool, second boss and third boss, the first boss, second boss and third boss are the annular boss being circumferentially arranged around spool and abut against with the inner wall of accommodating chamber, the top of the spool offers dosing corresponding with dosing mouth channel, the bottom end of the spool offers squeezing passage, the spool corresponds to and offers interface channel on the side wall between first boss and second boss, the interface channel is connected to the dosing channel, shape between second boss and third boss Transport channel circlewise.Assembly is simple, and formation is multiple-sealed, and no liquid leakage is effectively ensured.
Description
Technical field
The utility model relates to medical instruments field, especially a kind of multi-sealed check valve and infusion mechanism.
Background technique
It before being transfused pump operation, needs to its dosing, generally guarantees that dosing is smooth by check valve, when operation, which seals, does not leak
Liquid, flexible device inside general check valve, when dosing, shrink, and expose space and carry out dosing, after dosing, pass through elasticity dress
It puts back into bullet and withstands surrounding at dosing, form sealing.When carrying out dosing to infusion pump, need to open list with what syringe at the uniform velocity balanced
To valve valve, also at the uniform velocity to balance and withdraw after dosing.Because check valve will be packed into elastic device, it is necessary to divide upper and lower covers, and
And even if well control dosing and withdraw it is firmly average, but assembled when production it is incorrect or spare and accessory parts unqualified, very
It is easy to cause poorly sealed, check valve leak.
Utility model content
Based on this, the utility model lies in that overcome the deficiencies of existing technologies, a kind of multi-sealed check valve and defeated is provided
Mechanism is infused, not only assembly is simple, but also can effectively ensure no leakage.
A kind of multi-sealed check valve, including valve body and spool, the valve body be equipped with accommodating chamber and respectively with accommodating chamber
The dosing mouth of connection, the first opening and the second opening, the spool are elastic material, and the spool is arranged in the accommodating chamber
It is interior, and first boss, second boss and third boss are successively equipped at intervals on the side wall of the spool, the first boss,
Two boss and third boss are the annular boss being circumferentially arranged around spool and abut against with the inner wall of accommodating chamber, the spool
Top offer dosing corresponding with dosing mouth channel, the bottom end of the spool offers squeezing passage, the spool
Interface channel is offered on side wall between corresponding first boss and second boss, the interface channel and the dosing channel connect
It is logical, form cricoid transport channel between the second boss and third boss, when first state, the transport channel and first
Opening and the second open communication, when the second state, the interface channel and first opening and/or the second open communication.
Above-mentioned multi-sealed check valve, due to offering squeezing passage in spool bottom end, in dosing, syringe is by adding
Medicine mouth, which protrudes into, turns down that valve opening core is a bit of, compresses the spool of section where being located at squeezing passage, and spool is moved downward to the
Two-state, interface channel is open with first opening and/or the second open communication, first or the second opening is used for and infusion pump
Connection, can carry out the dosing of infusion pump, and medical fluid successively enters through dosing channel, interface channel and the first opening or the second opening
Infusion pump；At the end of dosing, syringe of directly choosing, spool recoils to first state upwards, and the transport channel is opened with first
Mouth and the second open communication enable infusion pump normal exhaust, infusion to use, and spool is using elastic material simultaneously in bottom end setting
Squeezing passage, no setting is required spring, assembly is simple, and feeding operations are convenient and efficient, and pass through first boss annular in shape, second
Boss and third boss and the inner wall of accommodating chamber abut against, and formation is multiple-sealed, and no liquid leakage is effectively ensured.
The bottom end of the valve body offers the installing port being connected to the accommodating chamber in one of the embodiments, described
The inner wall bottom end of accommodating chamber is equipped with the cricoid block machine being circumferentially arranged around valve body, and the side wall of the spool is additionally provided with the 4th boss,
4th boss and the inner wall of the accommodating chamber abut against, and the bottom end of the 4th boss is against in the block machine.
The valve body includes the first cylinder and the second cylinder being connected in one of the embodiments, and described first
The internal diameter of body is less than the internal diameter of second cylinder, and the dosing mouth is provided on the first cylinder, and the installing port is provided with the
On two cylinders, the spool includes the first core and the second core being connected, and the outer diameter of first core is less than described the
The outer diameter of two cores, the spool are mounted in the accommodating chamber by the installing port, and first core protrude into it is described
In first cylinder, the top of second core and the first protrusion is against the connection shaft shoulder of first cylinder and the second cylinder
On.
The valve body further includes the third cylinder connecting respectively with second cylinder and in one of the embodiments,
Four cylinders, the third cylinder are correspondingly arranged at first opening, and the 4th cylinder is correspondingly arranged at described second and opens
At mouthful.
It is equipped with first passage and second channel in the third cylinder and the 4th cylinder in one of the embodiments,
The bore of the first passage be less than the second channel bore, and the second channel by the first passage with it is described
Accommodating chamber connection.
The squeezing passage extends to the third boss as the end face where the 4th boss in one of the embodiments,
The end face at place.
Formed between the third boss and the 4th boss in one of the embodiments, it is cricoid allow bit port, it is described
The depth of bit port is allowed to be greater than the depth of the transport channel.
Cricoid groove is formed between the first boss and second boss in one of the embodiments,；Or
Cricoid platform, the platform and the first boss and second are equipped between the first boss and second boss
Boss is concordant.
The multi-sealed check valve further includes helmet in one of the embodiments, outside first cylinder
Wall is equipped with external screw thread, and the helmet is equipped with the internal screw thread cooperated with the external screw thread, and the helmet is by internal screw thread and outside
It is threadedly engaged and covers at the dosing mouth.
A kind of infusion mechanism, including infusion pump, the first connecting tube, the second connecting tube and described multi-sealed unidirectional
Valve, one end of first connecting tube and first open communication, the other end of first connecting tube and the infusion pump
Connection, one end of second connecting tube and second open communication, the other end of second connecting tube is equipped with infusion and connects
Head.
Above-mentioned infusion mechanism, in dosing, syringe is protruded into that turn down valve opening core a bit of by dosing mouth, is made to be located at and is squeezed
The spool of section is compressed where channel, and spool is moved downward to the second state, interface channel and first opening and/or second
Open communication, can carry out the dosing of infusion pump, and medical fluid is successively connect through dosing channel, interface channel and the first opening with first
Pipe enters infusion pump；At the end of dosing, syringe of directly choosing, spool recoils to first state upwards, the transport channel with
First opening and the second open communication enable infusion pump normal exhaust, infusion to use, and the medical fluid or gas in infusion pump are successively
Pass through the second connecting tube, transport channel, the first connecting tube and infusion connector output.Assembly is simple, and feeding operations are convenient and efficient, and
And abutted against by first boss annular in shape, second boss and third boss and the inner wall of accommodating chamber, formation is multiple-sealed, has
Effect guarantees without liquid leakage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of check valve multi-sealed described in an embodiment of the present invention；
Fig. 2 is the partial cutaway schematic of check valve multi-sealed described in an embodiment of the present invention.
Description of symbols:
10, valve body, the 101, first cylinder, the 102, second cylinder, 103, the connection shaft shoulder, 104, third cylinder, the 105, the 4th
Cylinder, 110, dosing mouth, 120, external screw thread, 130, installing port, 140, block machine, 150, first passage, 160, second channel, 20,
Spool, 210, first boss, 220, second boss, 230, third boss, 240, dosing channel, 250, squeezing passage, 260, company
Connect road, the 270, the 4th boss, 280, allow bit port, 290, transport channel.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are
For illustrative purposes, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
Referring to Fig.1,2, an embodiment provides a kind of multi-sealed check valve, including valve body 10 and spool 20, the valve
Body 10 is equipped with accommodating chamber and the dosing mouth 110 being connected to respectively with accommodating chamber, the first opening and the second opening, and the spool 20 is bullet
Property material, the spool 20 setting is successively equipped at intervals with first boss in the accommodating chamber, and on the side wall of the spool 20
210, second boss 220 and third boss 230, the first boss 210, second boss 220 and third boss 230 are around valve
Annular boss that core 20 is circumferentially arranged and abutted against with the inner wall of accommodating chamber, the top of the spool 20 offer with it is described plus
The corresponding dosing channel 240 of medicine mouth 110, the bottom end of the spool 20 offer squeezing passage 250, the spool 20 corresponding first
Interface channel 260 is offered on side wall between boss 210 and second boss 220, the interface channel 260 and the dosing are logical
Road 240 is connected to, and forms cricoid transport channel 290 between the second boss 220 and third boss 230, when first state, institute
Transport channel 290 and the first opening and the second open communication are stated, when the second state, the interface channel 260 is opened with described first
Mouth and/or the second open communication.
Specifically, spool 20 described in the present embodiment is silica gel material, at that time, under the premise of meeting service performance, spool
20 can also be used other elastic materials.
The multi-sealed check valve of the present embodiment, due to offering squeezing passage 250 in 20 bottom end of spool, in dosing,
Syringe is protruded by dosing mouth 110 turns down that valve opening core 20 is a bit of, presses the spool 20 positioned at 250 place section of squeezing passage
Contracting, spool 20 are moved downward to the second state, interface channel 260 and first opening and/or the second open communication, and first opens
Mouth or the second opening can carry out the dosing of infusion pump, medical fluid is successively through dosing channel 240, connection for being connected to infusion pump
Channel 260 and the first opening or the second opening enter infusion pump；At the end of dosing, syringe of directly choosing, spool 20 is back up
Bullet is to first state, the transport channel 290 and the first opening and the second open communication, enables infusion pump normal exhaust, defeated
Liquid uses, and squeezing passage 250 is arranged in bottom end simultaneously using elastic material in spool 20, no setting is required spring, only there are two accessory,
Spool 20 need to be only packed into valve body 10 when assembly, largely reduce cost of material and production assembly cost, assembly is simple, adds
Medicine is easy to operate, and passes through first boss 210 annular in shape, second boss 220 and third boss 230 and accommodating chamber
Inner wall abuts against, and formation is multiple-sealed, and no liquid leakage is effectively ensured.
As shown in Figure 1, 2, cricoid groove is formed between first boss 210 and second boss 220 described in the present embodiment, i.e.,
First boss 210 and second boss 220 with accommodate cavity wall and abut, spool 20 move up and down it is more smooth, in first state and
Switch faster between second state, and groove is connected to interface channel 260, and when spool 20 is in the second state, is led to
Groove is crossed, the first opening and the second open communication are made, convenient for logical with the infusion pump and infusion of the first opening or the second open communication
Gas discharge in road.According to actual needs, can be arranged between the first boss 210 and second boss 220 cricoid flat
Platform, the platform is concordant with the first boss 210 and second boss 220, i.e. first boss 210 and second boss 220 is at one
Body, first boss 210, second boss 220 and platform between the two with accommodate cavity wall and abut, make spool 20 and valve body 10
Between form the sealing cooperation of large area, sealing effect is good.
Specifically, interface channel 260 described in the present embodiment is lateral channel, and dosing channel 240 is vertical channel,
The two intersection connection.Further, corresponding first opening is provided with a connection channel 260 on the spool 20, and corresponding second opens
Mouth is provided with another interface channel 260, and when spool 20 is in the second state, wherein a connection channel 260 and the first opening connect
Logical, another interface channel 260 and the second open communication are convenient for during dosing, the discharge of gas in infusion pump and infusion channel.
Certainly, it to meet infusion pump dosing needs, can also only setting a connection channel 260 be somebody's turn to do if infusion pump and the first open communication
The corresponding first opening setting of interface channel 260, if infusion pump and the second open communication, the interface channel 260 corresponding second is opened
Mouth setting.
Further, referring to Fig.1, the bottom end of the valve body 10 offers the installing port 130 being connected to the accommodating chamber, institute
The inner wall bottom end for stating accommodating chamber is equipped with the cricoid block machine 140 being circumferentially arranged around valve body 10, and the side wall of the spool 20 is additionally provided with
4th boss 270, the 4th boss 270 and the inner wall of the accommodating chamber abut against, and the bottom end of the 4th boss 270 is supported
In the block machine 140.When assembly, is filled in accommodating chamber from installing port 130 by spool 20, pass through the 4th boss 270 and block machine
140 abut, and avoid spool 20 from skidding off accommodating chamber, while the 4th boss 270 is abutted against with cavity wall is accommodated, increase and seal together,
Further ensure that no liquid leakage.
Optionally, referring to Fig.1, it is convex by the end face where the 4th boss 270 to extend to the third for the squeezing passage 250
End face where platform 230.Squeezing passage 250 is squeezed and deformed for spool 20, i.e., the squeezing passage 250 that 20 bottom end of spool opens up is
It is open, be vented convenient for extrusion process, and by the setting of the height of squeezing passage 250 third boss 230 and the 4th boss 270 it
Between, both ensure the demand that spool 20 is squeezed and deformed, and also ensures that the integral strength of spool 20.Certainly, the height of squeezing passage 250 can
According to extruding demand is realized, appropriate adjustment is carried out.Further, ring is formed between the third boss 230 and the 4th boss 270
Shape allows bit port 280, it is ensured that spool 20 is squeezed and deformed more smooth.Optionally, referring to Fig.1, bit port is allowed described in the present embodiment
280 depth is greater than the depth of the transport channel 290, depth refer at corresponding channel 20 side wall of spool and 10 inner wall of valve body it
Between distance, between third boss 230 and the 4th boss 270 reserve larger space meet 20 Deformation Demands of spool.
In one of the embodiments, referring to Fig.1,2, the valve body 10 includes the first cylinder 101 and second for being connected
Cylinder 102, the internal diameter of first cylinder 101 are less than the internal diameter of second cylinder 102, and the dosing mouth 110 is provided with the
On one cylinder 101, the installing port 130 is provided on the second cylinder 102, the spool 20 include the first core for being connected with
Second core, the outer diameter of first core are less than the outer diameter of second core, and the spool 20 passes through the installing port 130
It is mounted in the accommodating chamber, and first core protrudes into first cylinder 101, second core and the first protrusion
Top be against on the connection shaft shoulder 103 of first cylinder 101 and the second cylinder 102.Setting passes through spool 20 in this way
The shaft shoulder 103 and the limit of block machine 140 are connected in accommodating chamber, when first state, the top of the first protrusion with connect the sealing of the shaft shoulder 103
Cooperation, is further added by one of sealing, further ensures that no liquid leakage.
In one of the embodiments, referring to Fig.1,2, the multi-sealed check valve further include helmet (in figure not
Show), the outer wall of first cylinder 101 is equipped with external screw thread 120, and the helmet is equipped with to be cooperated with the external screw thread 120
Internal screw thread, the helmet by internal screw thread and external screw thread 120 with closing lid at the dosing mouth 110.Pass through setting and first
The helmet that cylinder 101 is threadedly coupled, threaded connection is convenient for disassembly and assembly, it is contaminated not only to avoid dosing mouth 110, but also further increase
Sealing effect avoids liquid leakage.
Further, the valve body 10 further includes the third cylinder 104 and the 4th connecting respectively with second cylinder 102
Cylinder 105, the third cylinder 104 are correspondingly arranged at first opening, and the 4th cylinder 105 is correspondingly arranged at described
Second opening.I.e. first state when, the transport channel 290 is connected to third cylinder 104 and the 4th cylinder 105, the second shape
When state, the interface channel 260 is connected to third cylinder 104 and/or the 4th cylinder 105.Third cylinder 104 and the 4th are set
Body 105 is connected to convenient for assembly connection pipe with infusion pump.
Referring to Fig.1, optionally, first passage 150 and second are equipped in the third cylinder 104 and the 4th cylinder 105
Channel 160, the bore of the first passage 150 is less than 160 bores of the second channel, and the second channel 160 passes through
The first passage 150 is connected to the accommodating chamber.I.e. small-bore first passage 150 and interface channel 260 or transport are logical
Road 290 is docked and connected, and bigbore second channel 160 is for accommodating connecting tube, and since the bore of first passage 150 is less than the
Two channels 160 form shoulder block in the junction of first passage 150 and second channel 160, for insertion second channel 160
Connecting tube is limited, and keeps connecting tube and 10 grafting of valve body more reliable.
Referring to Fig.1,2, another embodiment provides a kind of infusion mechanism, including infusion pump, the first connecting tube, the second connecting tube
And the multi-sealed check valve of any of the above-described embodiment, one end of first connecting tube and first open communication, institute
The other end for stating the first connecting tube is connect with the infusion pump, one end of second connecting tube and second open communication,
The other end of second connecting tube is equipped with infusion connector.
Mechanism is transfused described in the present embodiment, in dosing, syringe is protruded into that turn down valve opening core 20 1 small by dosing mouth 110
Section compresses the spool 20 positioned at 250 place section of squeezing passage, and spool 20 is moved downward to the second state, interface channel 260
With first opening and/or the second open communication, the dosing of infusion pump can be carried out, medical fluid is successively through dosing channel 240, company
It connects road 260 and the first opening and enters infusion pump with the first connecting tube；At the end of dosing, syringe of directly choosing, spool 20 to
On recoil to first state, the transport channel 290 and the first opening and the second open communication enable infusion pump normally to arrange
Gas, infusion use, and the medical fluid or gas in infusion pump pass sequentially through the second connecting tube, transport channel 290, the first connecting tube and defeated
Infuse connector output.Assembly is simple, and feeding operations are convenient and efficient, and pass through first boss 210 annular in shape, second boss 220
And third boss 230 and the inner wall of accommodating chamber abut against, formation is multiple-sealed, and no liquid leakage is effectively ensured.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of multi-sealed check valve, which is characterized in that including valve body and spool, the valve body is equipped with accommodating chamber and difference
The dosing mouth that is connected to accommodating chamber, the first opening and the second opening, the spool are elastic material, and the spool is arranged described
First boss, second boss and third boss are successively equipped at intervals in accommodating chamber, and on the side wall of the spool, described first is convex
Platform, second boss and third boss are the annular boss being circumferentially arranged around spool and abut against with the inner wall of accommodating chamber, institute
The top for stating spool offers dosing corresponding with dosing mouth channel, and the bottom end of the spool offers squeezing passage, institute
It states spool and corresponds to and offer interface channel, the interface channel and the dosing on side wall between first boss and second boss
Channel connection, forms cricoid transport channel between the second boss and third boss, when first state, the transport channel
With the first opening and the second open communication, when the second state, the interface channel connects with first opening and/or the second opening
It is logical.
2. multi-sealed check valve according to claim 1, which is characterized in that the bottom end of the valve body offers and institute
The installing port of accommodating chamber connection is stated, the inner wall bottom end of the accommodating chamber is equipped with the cricoid block machine being circumferentially arranged around valve body, described
The side wall of spool is additionally provided with the 4th boss, and the 4th boss and the inner wall of the accommodating chamber abut against, and the 4th boss
Bottom end be against in the block machine.
3. multi-sealed check valve according to claim 2, which is characterized in that the valve body includes first to be connected
Cylinder and the second cylinder, the internal diameter of first cylinder are less than the internal diameter of second cylinder, and the dosing mouth is provided with first
On cylinder, the installing port is provided on the second cylinder, and the spool includes the first core and the second core being connected, described
The outer diameter of first core is less than the outer diameter of second core, and the spool is mounted on the accommodating chamber by the installing port
Interior, and first core protrudes into first cylinder, the top of second core and the first protrusion is against described the
On the connection shaft shoulder of one cylinder and the second cylinder.
4. multi-sealed check valve according to claim 3, which is characterized in that the valve body further include respectively with it is described
The third cylinder and the 4th cylinder of second cylinder connection, the third cylinder are correspondingly arranged at first opening, and described the
Four cylinders are correspondingly arranged at second opening.
5. multi-sealed check valve according to claim 4, which is characterized in that in the third cylinder and the 4th cylinder
It is equipped with first passage and second channel, the bore of the first passage is less than the bore of the second channel, and described second
Channel is connected to by the first passage with the accommodating chamber.
6. according to the described in any item multi-sealed check valves of claim 2-5, which is characterized in that the squeezing passage is by
End face where four boss extends to the end face where the third boss.
7. according to the described in any item multi-sealed check valves of claim 2-5, which is characterized in that the third boss and
Formed between four boss it is cricoid allow bit port, the depth for allowing the depth of bit port to be greater than the transport channel.
8. according to the described in any item multi-sealed check valves of claim 2-5, which is characterized in that the first boss and the
Cricoid groove is formed between two boss；Or
Cricoid platform, the platform and the first boss and second boss are equipped between the first boss and second boss
Concordantly.
9. according to the described in any item multi-sealed check valves of claim 3 to 5, which is characterized in that it further include helmet, it is described
The outer wall of first cylinder is equipped with external screw thread, and the helmet is equipped with the internal screw thread cooperated with the external screw thread, and the helmet is logical
It crosses internal screw thread and external screw thread matches closing lid at the dosing mouth.
10. a kind of infusion mechanism, which is characterized in that including infusion pump, the first connecting tube, the second connecting tube and claim 1 to 9
Described in any item multi-sealed check valves, one end of first connecting tube and first open communication, described first
The other end of connecting tube is connect with the infusion pump, one end of second connecting tube and second open communication, and described the
The other end of two connecting tubes is equipped with infusion connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801524.4U CN208974823U (en) | 2018-05-28 | 2018-05-28 | Multi-sealed check valve and infusion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801524.4U CN208974823U (en) | 2018-05-28 | 2018-05-28 | Multi-sealed check valve and infusion mechanism |
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| Publication Number | Publication Date |
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| CN208974823U true CN208974823U (en) | 2019-06-14 |
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| CN201820801524.4U Active CN208974823U (en) | 2018-05-28 | 2018-05-28 | Multi-sealed check valve and infusion mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933344A (en) * | 2021-01-27 | 2021-06-11 | 王晓斌 | Injection device |
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2018
- 2018-05-28 CN CN201820801524.4U patent/CN208974823U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933344A (en) * | 2021-01-27 | 2021-06-11 | 王晓斌 | Injection device |
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