WO2018090551A1

WO2018090551A1 - Anti-drip suction tube connector

Info

Publication number: WO2018090551A1
Application number: PCT/CN2017/080344
Authority: WO
Inventors: 张柱华
Original assignee: 常州帝斯博医疗用品有限公司
Priority date: 2016-11-21
Filing date: 2017-04-13
Publication date: 2018-05-24
Also published as: CN106382427A; CN106382427B

Abstract

Disclosed is an anti-drip suction tube connector, comprising a connector body (1), a fixed end (2), a 90-degree interface end (3), an elastic seal body (4), a valve element (5) and a spring (6). The connector body is fixedly connected to the fixed end in a sealing manner. The 90-degree interface end is rotatably connected to the fixed end in a sealing manner. Guide slots (2-1) are arranged at a lower end of the fixed end. The valve element comprises a plunger (5-1) and the same number of guide winged edges (5-2) as there are guide slots. The guide winged edges of the valve element are in sliding fit with the guide slots. One end of the spring abuts against the fixed end, and the other end of the spring abuts against spring catch slots (5-3) on the guide winged edges. The elastic sealing body comprises a ring-shaped body (4-1). A lower end of the ring-shaped body is provided with a tapered ring (4-2) extending upwardly. The tapered ring is provided with a fluid through hole (4-3). A lower end of the elastic sealing body abuts against a step (1-1) in the body. A wing-shaped liquid accommodating slot (4-4) is formed between the ring-shaped body on the elastic sealing body and the tapered ring. The plunger abuts against the fluid through hole of the elastic sealing body in a sealing manner by means of the spring. The connector can be automatically opened when it is in place by means of its own structure, and can be automatically closed after being disengaged from an operating system, so that residual liquid in an operating pipeline can be effectively prevented from dripping out after being disengaged from the operating system, thereby improving the safety of the system.

Description

Anti-drip suction pipe connecting joint

Technical field

The invention relates to the technical field of suction pipe joint joint equipment, in particular to an anti-drip suction pipe joint.

Background technique

The suction pipe joint is widely used in daily life and industrial production. It can be said that it is ubiquitous. The traditional suction pipe joints generally adopt the in-line structure, and the in-line structure is fixed by the interference fit, but if the interference is excessive If it is too large, it will easily cause installation difficulties. If the interference is too small, the fixing will be unreliable. Especially when changing the suction pipe connection joint, the water in the pipe will cause great trouble to the installation. The joints are normally open. When the joint is removed after the work is finished, the liquid remaining in the pipeline is likely to be leaky and inconvenient; the joint fixed on the collecting device also needs to be plugged to ensure that the liquid in the device does not leak, and the installation appears Especially troublesome.

Summary of the invention

The object of the present invention is to provide an anti-drip suction pipe connecting joint, which has the advantages of quick installation and reliable connection, and has a self-locking function of positioning and positioning, and can effectively avoid dripping of residual liquid in the pipeline, so as to solve the above-mentioned background art installation. Difficulties, the fixing of the installation is unreliable, and the liquid in the catheter is liable to leak, causing inconvenience.

To achieve the above object, the present invention provides the following technical solutions:

An anti-drip suction pipe connecting joint comprises a joint body, a fixed end, a 90° interface end, an elastic sealing body, a valve core and a spring; the joint body is sealed and fixedly connected at a fixed end, and the 90° interface end and the fixed end are rotated and sealed The lower end of the fixed end is provided with a guiding groove. The valve core comprises a plunger and a guiding wing edge having the same number as the guiding groove. The guiding wing edge of the valve core is slidably engaged with the guiding groove, and one end of the spring is opposite to the fixed end. The other end of the spring abuts the spring slot on the side of the guide wing, the elastic sealing body comprises an annular body, the lower end of the annular body has an upwardly extending tapered ring; the tapered ring is provided with a fluid through hole, the elastic sealing body The lower end is opposite to the step in the body, and a wing-shaped liquid-retaining groove is formed between the annular body on the elastic sealing body and the tapered ring, and the plunger is sealed against the fluid through-hole of the elastic sealing body by a spring.

The central fluid passage hole of the wing-shaped container shaft of the present invention is driven by the spring to be in a closed state when in the non-operating state.

As a further aspect of the present invention, the 90° interface end outer diameter has an annular boss, the fixed end inner diameter also has an annular limiting boss, and the interface end having the annular boss section is inserted in the fixed end. Such a 90° interface end has a rotation about the axis 360 degrees of freedom. It can guarantee that the joint can be connected at any position.

As a further aspect of the present invention, the outer side of the joint body is provided with a guiding groove and a positioning groove, and the guiding groove is in communication with the positioning groove. This makes it easy to connect to the interface.

Compared with the prior art, the present invention has the beneficial effects that the anti-drip suction pipe connecting joint can be connected to the interface conveniently through the guiding groove and the positioning groove when connecting, and has a wing-shaped liquid after pumping the fluid. The trough allows the remaining liquid in the joint to be returned to the wing-shaped liquid tank, so that no leakage is caused after the joint is taken out, which is very practical for recycling, especially for medically infectious fluids, and does not cause secondary pollution. .

DRAWINGS

Figure 1 is a schematic view of the overall structure of the present invention;

Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

[Correct according to Rule 91 19.06.2017]
Figure 3 is a perspective view of the explosion of the present invention;

Figure 4 is a schematic view showing the structure of the fixed end of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1-4, in an embodiment of the present invention, an anti-drip suction pipe connecting joint is characterized in that it comprises a joint body 1, a fixed end 2, a 90° interface end 3, an elastic sealing body 4, a valve core 5, and a spring 6; the joint body 1 is sealingly and fixedly connected to the fixed end 2, and the 90° interface end 3 is connected to the fixed end 2 in a rotationally sealed manner. The lower end of the fixed end 2 is provided with a guiding groove 2-1, and the valve core 5 includes a plunger 5-1 and the same number of guide hem 5-2 as the guide groove 2-1, the guide hem 5-2 of the spool 5 is slidably engaged with the guide groove 2-1, and one end of the spring 6 is offset from the fixed end 2 The other end of the spring 6 abuts against the spring card slot 5-3 on the guiding wing 5-2. The elastic sealing body 4 includes an annular body 4-1, and the lower end of the annular body 4-1 has an upwardly extending tapered ring. 4-2; the tapered ring 4-2 is provided with a fluid through hole 4-3, the lower end of the elastic sealing body 4 is abutted against the step 1-1 in the body 1, and the annular body 4-1 on the elastic sealing body 4 is Forming a wing between the tapered rings 4-2 In the liquid reservoir 4-4, the plunger 5-1 is sealed against the fluid through hole 4-3 of the elastic sealing body 4 by the spring 6.

The outer end of the 90° interface end 3 has an annular boss 3-1, the inner end of the fixed end 2 also has an annular limiting boss 2-2, and the interface end 3 having an annular boss 3-1 is inserted in the Inside the fixed end 2. In the present invention, the lowermost annular boss 3-1 on the outer diameter of the 90° interface end 3 and the lowermost annular limit boss 2-2 on the inner diameter of the fixed end 2 are in close contact with each other, thereby preventing The 90° interface end 3 is strung up and down.

The outer side of the joint body 1 is provided with a guiding groove 1-2 and a positioning groove 1-3, and the guiding groove 1-2 is in communication with the positioning groove 1-3.

It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim.

In addition, it should be understood that although the description is described in terms of embodiments, not every embodiment includes only one independent technical solution. The description of the specification is merely for the sake of clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the respective embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

Claims

An anti-drip suction pipe connecting joint, comprising: a joint body (1), a fixed end (2), a 90° interface end (3), an elastic sealing body (4), a valve core (5) and a spring (6) The joint body (1) is sealed and fixedly connected at the fixed end (2), the 90° interface end (3) is connected to the fixed end (2) by a rotary seal, and the lower end of the fixed end (2) is provided with a guide groove ( 2-1), the spool (5) includes the plunger (5-1) and the same number of guide vanes (5-2) as the guide groove (2-1), and the guide vane of the spool (5) (5) -2) Sliding engagement with the guide groove (2-1), one end of the spring (6) abutting against the fixed end (2), the other end of the spring (6) and the spring card on the guide wing edge (5-2) The groove (5-3) is abutted, the elastic sealing body (4) comprises an annular body (4-1), and the lower end of the annular body (4-1) has an upwardly extending tapered ring (4-2); a tapered ring (4-2) a fluid through hole (4-3) is opened, and the lower end of the elastic sealing body (4) abuts against the step (1-1) in the body (1), and the ring on the elastic sealing body (4) A wing-shaped liquid reservoir (4-4) is formed between the body (4-1) and the tapered ring (4-2), and the plunger (5-1) passes through the spring (6) and the elastic sealing body (4) The fluid through holes (4-3) are sealed against each other.
The anti-drip suction pipe connecting joint according to claim 1, wherein the outer end of the 90° interface end (3) has an annular boss (3-1), and the inner end of the fixed end (2) also has The annular limiting boss (2-2) has an interface end (3) having an annular boss (3-1) inserted in the fixed end (2).
The anti-drip suction pipe connecting joint according to claim 1, wherein the outer side of the joint body (1) is provided with a guiding groove (1-2) and a positioning groove (1-3), and the guiding groove ( 1-2) communicate with the positioning groove (1-3).