CN205626634U

CN205626634U - End liquid ware

Info

Publication number: CN205626634U
Application number: CN201620010171.7U
Authority: CN
Inventors: 陈海燕
Original assignee: Deshipu Technology Development Wenzhou Co Ltd
Current assignee: Deshipu Technology Development Wenzhou Co Ltd
Priority date: 2016-01-06
Filing date: 2016-01-06
Publication date: 2016-10-12
Anticipated expiration: 2026-01-06

Abstract

The utility model discloses an end liquid ware, wherein, include: a housing, the casing has a lower part of the body and sets up at internal hollow reservoir and the runner of setting in lower part of the body lower part of being down, the spacing ring, the spacing ring is located the reservoir, and can fluctuate in the reservoir, the spacing ring has last hole, the chamber is aerifyd to outer wall ring sum a plurality of, the outer wall ring can be inconsistent with the inner wall of reservoir, it holds and has nitrogen gas to aerify the intracavity, a piston, the piston is located the reservoir, and can reciprocate in the reservoir, the piston has the piston inclined plane, can contradict with the last hole deviation facial features in last hole in the piston inclined plane, the upper portion of piston is equipped with the float, the lower part of piston is equipped with the sealing plug, the sealing plug can with the side of runner is inconsistent. The utility model discloses simple structure, can seal up many times, can improve the sealed reliability of infusion pipeline, the further increased security.

Description

A kind of liquid-stopping device

Technical field

This utility model relates to technical field of medical instruments, is specifically related to a kind of liquid-stopping device.

Background technology

Transfusion device be a kind of be mainly used in venous transfusion through aseptic process, set up vein And the common disposable medical treatment consumptive materials of passage between medicinal liquid.Typically by intravenous needle, helmet, Infusion tube, liquid medicine filter, flow regulator, droplet kettle, bottle plug puncture unit, air inlet pipe Air filter connects composition, but disposable transfusion device terminates in transfusion or more renews infusion bottle Or during transfusion bag, if nursing staff does not notes, will bypass air through wear plug pin through transfusion soft Pipe enters patient's intravenous with medicinal liquid, brings potential safety hazard to patient, easily causes fearing of patient Unbearably, doctor-patient dispute is the most easily caused.

Chinese patent CN201220351992.9 discloses a kind of automatic liquid-stopping transfusion apparatus, its Including be sequentially connected with wear plug pin, dropping funnel, tube for transfusion, the flow that is arranged on tube for transfusion are adjusted Joint device, filter, transfusion needle and automatic liquid-stopping assembly, automatic liquid-stopping assembly is set to up and down It is respectively communicated with dropping funnel and tube for transfusion；Wherein, automatic liquid-stopping assembly include both ends open valve seat, The locating part being arranged in valve seat and relocatable spool, valve seat includes sealing bulge loop, spool Can abut with the upper surface sealing bulge loop, spool can between locating part and sealing bulge loop up and down Mobile.Automatic liquid-stopping transfusion apparatus of the present utility model, by utilizing the buoyancy of medicinal liquid to come automatically Control spool and contact or closed state with sealing bulge loop, thus reach to automatically control liquid outlet The purpose of folding condition, can automatic sealing package at the end of exchanging infusion bottle (bag) or transfusion nearly Close transfusion device passage, greatly reduce the potential safety hazard of patient in infusion process, also subtract simultaneously The light pressure of nursing staff, decreases doctor-patient dispute.

Chinese patent CN 201210088609.X discloses a kind of disposable automatic liquid-stopping transfusion Device and preparation method thereof, transfusion device includes that a release mechanism, described release mechanism include one Housing and the buoyancy aid being positioned in this housing, described housing includes at least one medicine liquid outlet Portion, in described housing, lower end is for connecting end, and this connection end has the through hole for liquid medicine flow, This connection end is raised in the medicine liquid outlet portion of described housing, is provided with a spill below described buoyancy aid Portion, is provided with sealing cap in described concave shaped portion, described sealing cap includes crown and annular cap body, One end of annular cap body is closed through crown, and the other end is opening, the openings of annular cap body In opposite direction to the indent with concave shaped portion, the diameter of opening part is more than the diameter connecting end.This The purpose of utility model is to use repeatedly to seal, and nearly terminates with transfusion when exchanging infusion bottle Time, can ensure that the self-closed of infusion pipeline, really prevent air from entering base in the patient On plinth, improve the reliability that infusion pipeline seals, improve safety further.

Though above-mentioned patent can well suppress bubble to enter tube for transfusion, but for some special shape State, still can cause bubble to enter, when being reversed such as housing, air will float entrance defeated Liquid pipe, with this simultaneously, at some in particular cases, when transfusion device end causes a departure from, interior Portion's medicinal liquid may proceed to outflow and causes waste.

Therefore it is badly in need of a kind of simple in construction, seals reliable novel liquid-stopping device.

Utility model content

This utility model is for the problems referred to above, it is provided that a kind of simple in construction, can repeatedly seal Liquid-stopping device, can improve infusion pipeline seal reliability, improve safety further.

The technical scheme in the invention for solving the above technical problem is:

A kind of liquid-stopping device, wherein, including: housing, described housing has a lower body and setting Internal reservoir in hollow and be arranged on the runner of lower body bottom under；Spacing ring, institute Stating spacing ring and be positioned at reservoir, and can fluctuate in reservoir, described spacing ring has Having upper hole, outer wall ring and several inflatable chambers, described outer wall ring can be with the inwall phase of reservoir Conflict, in described inflatable chamber, accommodate nitrogen；Piston, described piston is positioned at reservoir, And can move up and down in reservoir, described piston has piston inclined-plane, described piston inclined-plane Can be inconsistent with the upper hole deviation face in upper hole, the top of described piston is provided with float, described piston Bottom be provided with sealing-plug, described sealing-plug can be inconsistent with the side of described runner.

Said structure understands, outer wall ring and the contact internal walls of reservoir so that spacing ring and storage The inwall tight seal of liquid bath, accommodates nitrogen in inflatable chamber so that flat when spacing ring falls Surely, and do not affected by housing state, outer wall ring can be made can be abutted against with the inwall of reservoir Touching, play the effect of sealing, piston inclined-plane contacts with the upper hole deviation face in upper hole, plays close The effect of envelope, sealing-plug is inconsistent with the side of described runner so that seal more reliable.

Further, the side of described runner has and is sequentially connected the first cambered surface and second connect Cambered surface, described sealing-plug has bowl, and the surface of described lower bowl has to be sequentially connected and connects Lower bowl the first cambered surface and lower bowl the second cambered surface, described first cambered surface offsets with lower bowl the first cambered surface Touching, described second cambered surface is inconsistent with lower bowl the second cambered surface.

Said structure understands, and the cambered surface of runner contacts with the cambered surface of lower bowl so that be sealed into One step is reliable.

Further, described spacing ring also has flange, the flange lower counterbore surrounded and leads to Hole, described flange is arranged on the lower end of outer wall ring, and described flange can be kept out on inwall, institute Stating through hole to connect with upper hole and lower counterbore, described through hole can accommodate piston inclined-plane, described under Counterbore can accommodate sealing-plug.

Further, described sealing-plug also has connecting portion, upper bowl and annular seal space, described Connecting portion ringwise, and tilts upward extension, upper bowl be connected to connecting portion and lower bowl it Between, described annular seal space connecting portion, between bowl and lower bowl.

Said structure makes sealing-plug lighter, easily floats when liquid is full of housing, at liquid When body stream is complete, can be with liquid rapid decrease.

Further, upper bowl has and is sequentially connected upper bowl the first cambered surface connect, upper bowl Second cambered surface, upper bowl the 3rd cambered surface, upper bowl the first cambered surface is connected with lower bowl the first cambered surface Connecing, upper bowl the 3rd cambered surface is connected with connecting portion.

Said structure makes sealing-plug lighter.

Further, described sealing-plug also has sealing edge, seal groove and buffer part, institute Stating sealing edge to be connected in lower bowl the second cambered surface, described seal groove is positioned at the outside of sealing edge, Described buffer locations is in lower bowl the second cambered surface and sealing edge junction.

It is reliable that said structure makes sealing-plug and runner seal, and prevent sealing-plug from rocking and Float.

Further, the radius of curvature of described seal groove is 0.10mm～0.20mm.

Further, the radius of curvature of described seal groove is 0.15mm.

Said structure makes sealing edge have certain elasticity so that sealing edge energy and flow passage side Face tight seal.

Further, described float hollow is spherical in shape, and described float has float cavity, floats Sub-edge and float opening, described float edge extends outside float, and described float opening is positioned at floating The bottom of son, and it is positioned at the inner side of float edge.

Said structure plays the effect of balance so that above-mentioned each sealing contact surface can be able to be abutted against Touch.

Further, described float opening connects with float cavity, the front end of described float edge Semicircular in shape.

Advantage of the present utility model includes:

1. in this utility model, spacing ring coordinates the lower body inwall of certain taper, at syringe needle Under the state departing from vein, medicinal liquid flow drastically strengthens, and can accomplish timely Decline the effect of hermetic barrier medicinal liquid conveying；

2. in this utility model the float on piston by the buoyancy of medicinal liquid, by piston and The middle and upper part of reservoir moved to by sealing-plug, when medicinal liquid has fallen, float and Piston and sealing-plug can rapid decrease simultaneously, and do not swing when playing decline；

3., in this utility model when liquid-stopping device is reversed, medicinal liquid flow to top, makes to float Son floats by sealing-plug closing pipe line, it is to avoid air enters pipeline.

In addition to objects, features and advantages described above, this utility model also has it Its objects, features and advantages.Below with reference to figure, this utility model is made the most in detail Thin explanation.

Accompanying drawing explanation

Constitute the part of this specification, be used for being further appreciated by accompanying drawing of the present utility model and show Go out preferred embodiment of the present utility model, and be used for illustrating that this practicality is new together with description The principle of type.In the accompanying drawings:

Fig. 1 is complete section structural representation of the present utility model；

Fig. 2 is the first partial cutaway structural representation of the present utility model；

Fig. 3 is spacing ring structural representation of the present utility model；

Fig. 4 is the second partial cutaway structural representation of the present utility model；And

Fig. 5 is the sectional view of sealing-plug of the present utility model.

Wherein, figure is labeled as:

10 be housing, 11 for upper cover, 12 for lower body, 13 for reservoir, 14 for inwall, 15 it is lower nozzle, 16 is base, 161 is arc on base, 17 is runner, 171 is first Cambered surface, 172 be the second cambered surface, 20 floats, 21 for float cavity, 22 for float edge, 23 For float opening, 30 be piston, 31 be upper piston rod, 32 be piston edge, 33 for piston Inclined-plane, 34 be lower piston rod, 40 for spacing ring, 41 for upper hole, 42 for upper hole deviation face, 43 be through hole, 44 for lower counterbore, 45 for outer wall ring, 46 for flange, 50 for sealing-plug, 51 be connecting portion, 52 for sealed groove, 53 for upper bowl, 531 for upper bowl the first cambered surface, 532 for upper bowl the second cambered surface, 533 for upper bowl the 3rd cambered surface, 54 for lower bowl, 541 be under Bowl the first cambered surface, 542 be lower bowl the second cambered surface, 55 for annular seal space, 56 be sealing edge, 57 For seal groove, 58 be buffer part.

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but this reality Implement by the novel multitude of different ways that can be defined by the claims and cover.

Embodiment 1

Referring to figs. 1 to Fig. 5, a kind of liquid-stopping device as shown in Figure 1, including housing 10, institute Stating and include upper cover 11 on housing 10, described upper cover 11 bottom is provided with lower body 12, described under Body 12 includes that base 16, described lower body 12 are provided with inwall 14 formation by band gradient Reservoir 13, described base 16 includes arc 161 on a base, sets in the middle part of described base 16 Runner 17, described runner 17 is had to be made up of with the second cambered surface 172 the first cambered surface 171, institute State and in the middle part of runner 17, be provided with lower nozzle 15.

Referring to figs. 1 to Fig. 3, a kind of liquid-stopping device as shown in Figure 1 to Figure 3, described lower body Being provided with a spacing ring 40 in 12, described spacing ring 40 top is provided with outer wall ring 45, described outside Wall ring 45 bottom is provided with flange 46, and described outer wall ring 45 is provided with hole 41, described on It is provided with hole deviation face 42 outside hole 41, below described upper hole 41, is provided with through hole 43, described Being provided with lower counterbore 44 in flange 46, described lower counterbore 44 is connected through with through hole 43, institute Stating outer wall ring 45 with flange 46 outer wall is cone.

With reference to Fig. 1, Fig. 4, a kind of liquid-stopping device as Figure 1 and Figure 4, described spacing ring Include on 40 that a piston 30, described piston 30 include a piston edge 32, described piston edge 32 are provided with upper piston rod 31, are provided with piston inclined-plane 33 below described piston edge 32, described Piston inclined-plane 33 and skewed slot 42 are coordinated by inclined-plane and seal and folding, described piston inclined-plane A lower piston rod 34 it is provided with below 33；Described upper piston rod 31 top is provided with a float 20, Described float 20 includes a float cavity 21, and float edge 22, described float edge 22 times Fang Kaiyou float opening 23.

Reference Fig. 1, Fig. 4 and Fig. 5, a kind of liquid-stopping device as shown in Fig. 1, Fig. 4 and Fig. 5, Described lower piston rod 34 end is provided with a sealing-plug 50, and described sealing-plug 50 includes by upper bowl First cambered surface 531, upper bowl the second cambered surface 532 and the upper bowl of upper bowl the 3rd cambered surface 533 composition 53, it is provided with a junction 51 in the middle part of upper bowl 53 and is connected with lower piston rod 34, described Upper bowl 53 and connecting portion 51 form sealed groove 52；Described sealing-plug also includes lower bowl 54, Described lower bowl 54 is made up of lower bowl the first cambered surface 541 and lower bowl the second cambered surface 542, described Upper bowl 53 and lower bowl 54 form an annular seal space 55, and described lower bowl 54 end also includes one Sealing edge 56, is provided with a buffer part 58, outside described sealing edge 56 in described sealing edge 56 Enclose and be provided with seal groove 57.

Embodiment 2

Referring to figs. 1 to Fig. 5, a kind of liquid-stopping device as shown in Figure 1, wherein, this liquid-stopping device Including housing 10, spacing ring 40 and piston 30, described housing 10 have a lower body 12, Upper cover 11, base 16, reservoir 13, runner 17 and lower nozzle 15, upper cover 11 is installed On the top of lower body 12, base 16 is fixed on the bottom of lower body 12, reservoir 13 in Sky, it is internal that it is positioned at lower body 12, and runner 17 is arranged in base 16, as in figure 2 it is shown, Lower nozzle 15 is arranged in base 16, and connects with runner 17, and base 16 also sets Arc 161 on base, described spacing ring 40 are had to be positioned at reservoir 13, and can be at reservoir Fluctuating in 13, described piston 30 is positioned at reservoir 13, and can be at reservoir 13 Inside moving up and down, the top of described piston 30 is provided with float 20, the bottom of described piston 30 It is provided with sealing-plug 50.

As shown in Figures 2 and 3, described spacing ring 40 have upper hole 41, outer wall ring 45, Several inflatable chambers, flange 46, flange 46 lower counterbore 44 surrounded and through hole 43, Described outer wall ring 45 can be inconsistent with the inwall 14 of reservoir 13, described inflatable chamber content Receive nitrogen, accommodated nitrogen in inflatable chamber and make spacing ring 40 steady when falling, and Swing few, it is ensured that flange 46 and inwall 14 tight seal, outside described flange 46 is arranged on The lower end of wall ring 45, described flange 46 can be kept out on inwall 14, described through hole 43 with Upper hole 41 and lower counterbore 44 connect, and described through hole 43 can accommodate piston inclined-plane 33, institute State lower counterbore 44 and can accommodate sealing-plug 50.

As shown in Figure 4, described piston 30 has piston inclined-plane 33 and piston edge 32, described The top of piston 30 is provided with upper piston rod 31, and float 20 is connected on upper piston rod 31, The bottom of described piston 30 is provided with lower piston rod 34, and sealing-plug 50 is connected to lower piston rod On 34, described float 20 hollow is spherical in shape, and described float 20 has float cavity 21, floats Sub-edge 22 and float opening 23, the inwall of float cavity 21 is connected on upper piston rod 31, Described float edge 22 extends outside float 20, and described float opening 23 is positioned at float 20 Bottom, and it is positioned at the inner side of float edge 22, described float opening 23 and float cavity 21 phase Through, the front end semicircular in shape of described float edge 22, described piston inclined-plane 33 can be with upper hole The upper hole deviation face 42 of 41 is inconsistent, and owing to accommodating nitrogen in inflatable chamber, thus piston is oblique Face 33 and upper hole deviation face 42 seal reliably, and described sealing-plug 50 can be with described runner 17 Side is inconsistent.

As shown in Figure 1, Figure 2 with shown in Fig. 5, it is preferable that the side of described runner 17 has and depends on Secondary the first cambered surface 171 and the second cambered surface 172 being connected, described sealing-plug 50 has Bowl 54, the surface of described lower bowl 54 has and is sequentially connected lower bowl the first cambered surface 541 He connect Lower bowl the second cambered surface 542, described first cambered surface 171 is inconsistent with lower bowl the first cambered surface 541, Described second cambered surface 172 is inconsistent with lower bowl the second cambered surface 542, multiple arcs of runner 17 Face contacts with multiple cambered surfaces of lower bowl so that repeatedly seal more reliable.

Described sealing-plug 50 also has sealed groove 52, connecting portion 51, upper bowl 53 and close Envelope chamber 55, sealed groove 52 is positioned at the top of sealing-plug 50, when liquid falls, seals Can be hydraulically full in groove 52, when sealing-plug 50 falls, the liquid in sealed groove 52 Body, under the effect of deadweight, can accelerate sealing-plug 50 and fall, it is ensured that sealing-plug 50 and runner 17 reliably seal, and liquid gravity plays the effect of lower densification blocking 50 simultaneously so that lower bowl Multiple cambered surfaces and multiple cambered surfaces of runner 17 seal further reliable, described connecting portion 51 Ringwise, and tilting upward extension, upper bowl 53 is connected to connecting portion 51 and lower bowl 54 Between, described annular seal space 55 connecting portion 51, between bowl 53 and lower bowl 54, this The structure of sample makes sealing-plug 50 not swing when falling, it is ensured that multiple cambered surfaces of lower bowl and stream Multiple cambered surfaces in road 17 seal the most reliable.

Upper bowl 53 has and is sequentially connected upper bowl the first cambered surface 531 connect, upper bowl the second arc Face 532, upper bowl the 3rd cambered surface 533, sealing edge 56, seal groove 57 and buffer part 58, Upper bowl the first cambered surface 531 is connected with lower bowl the first cambered surface 541, upper bowl the 3rd Cambered surface 533 is connected with connecting portion 51, and described sealing-plug 50 also has, described sealing edge 56 are connected in lower bowl the second cambered surface 542, and described seal groove 57 is positioned at outside sealing edge 56 Side, described buffer part 58 is positioned at lower bowl the second cambered surface 542 and sealing edge 56 junction.

Preferably, the radius of curvature of described seal groove 57 is 0.10mm～0.20mm, makes Sealing edge 56 has certain elasticity so that sealing edge 56 seals with the side of runner 17 More reliable.

Preferably, the radius of curvature of described seal groove 57 is 0.15mm.Make sealing edge 56 Optimal with the side sealing effectiveness of runner 17.

From the foregoing, this utility model uses repeatedly seals structure, when exchanging infusion bottle At the end of transfusion nearly, can ensure that the self-closed of tube for transfusion housing 10, prevent air Enter in the patient, improve the reliability that infusion pipeline seals, improve safety further, Float 20, piston 30 and the integrative-structure of sealing-plug 50 so that seal relatively reliable.

These are only preferred embodiment of the present utility model, be not limited to this practicality Novel, for a person skilled in the art, this utility model can have various change and Change.All within spirit of the present utility model and principle, any amendment of being made, equivalent Replacement, improvement etc., within should be included in protection domain of the present utility model.

Claims

1. a liquid-stopping device, it is characterised in that including:

Housing (10), described housing (10) has a lower body (12) and is arranged on down Reservoir (13) in hollow and be arranged on lower body (12) bottom in body (12) Runner (17)；

Spacing ring (40), described spacing ring (40) is positioned at reservoir (13), and Can fluctuate in reservoir (13), described spacing ring (40) have upper hole (41), Outer wall ring (45) and several inflatable chambers, described outer wall ring (45) can be with reservoir (13) inwall (14) is inconsistent, accommodates nitrogen in described inflatable chamber；

Piston (30), described piston (30) is positioned at reservoir (13), and can be Reservoir moves up and down in (13), and described piston (30) has piston inclined-plane (33), Described piston inclined-plane (33) can be inconsistent with the upper hole deviation face (42) of upper hole (41), The top of described piston (30) is provided with float (20), the bottom of described piston (30) Being provided with sealing-plug (50), described sealing-plug (50) can be with the side of described runner (17) Face is inconsistent.

Liquid-stopping device the most according to claim 1, it is characterised in that described runner (17) Side has and is sequentially connected the first cambered surface (171) and the second cambered surface (172), institute connect Stating sealing-plug (50) and have bowl (54), the surface of described lower bowl (54) has It is sequentially connected the lower bowl the first cambered surface (541) and lower bowl the second cambered surface (542), institute connect State the first cambered surface (171) inconsistent with lower bowl the first cambered surface (541), described second arc Face (172) is inconsistent with lower bowl the second cambered surface (542).

Liquid-stopping device the most according to claim 1, it is characterised in that described spacing ring (40) The lower counterbore (44) also there is flange (46), being surrounded by flange (46) and through hole (43), Described flange (46) is arranged on the lower end of outer wall ring (45), and described flange (46) can Keep out on inwall (14), described through hole (43) and upper hole (41) and lower counterbore (44) Connecting, described through hole (43) can accommodate piston inclined-plane (33), described lower counterbore (44) Sealing-plug (50) can be accommodated.

Liquid-stopping device the most according to claim 2, it is characterised in that described sealing-plug (50) Also there is connecting portion (51), upper bowl (53) and annular seal space (55), described connecting portion (51) Ringwise, and tilting upward extension, upper bowl (53) is connected to connecting portion (51) With between lower bowl (54), described annular seal space (55) is positioned at connecting portion (51), upper bowl (53) and between lower bowl (54).

Liquid-stopping device the most according to claim 4, it is characterised in that upper bowl (53) has Have be sequentially connected the upper bowl the first cambered surface (531) connect, upper bowl the second cambered surface (532), on Bowl the 3rd cambered surface (533), upper bowl the first cambered surface (531) and lower bowl the first cambered surface (541) being connected, upper bowl the 3rd cambered surface (533) is connected with connecting portion (51) Connect.

Liquid-stopping device the most according to claim 5, it is characterised in that described sealing-plug (50) Also there is sealing edge (56), seal groove (57) and buffer part (58), described sealing edge (56) being connected on lower bowl the second cambered surface (542), described seal groove (57) is positioned at The outside of sealing edge (56), described buffer part (58) is positioned at lower bowl the second cambered surface (542) With sealing edge (56) junction.

Liquid-stopping device the most according to claim 6, it is characterised in that described seal groove (57) Radius of curvature be 0.10mm～0.20mm.

Liquid-stopping device the most according to claim 7, it is characterised in that described seal groove (57) Radius of curvature be 0.15mm.

Liquid-stopping device the most according to any one of claim 1 to 8, it is characterised in that described Float (20) hollow is spherical in shape, and described float (20) has float cavity (21), floats Sub-edge (22) and float opening (23), described float edge (22) is to float (20) Outer extension, described float opening (23) is positioned at the bottom of float (20), and is positioned at floating The inner side of sub-edge (22).

Liquid-stopping device the most according to claim 9, it is characterised in that described float opening (23) Connect with float cavity (21), the front end semicircular in shape of described float edge (22).