阅读说明：本技术 一种吸引阀及内窥镜 (Suction valve and endoscope ) 是由 不公告发明人 于 2020-07-29 设计创作，主要内容包括：本发明的吸引阀包括阀体、弹性件、柱塞和密封件；所述弹性件设置于所述阀体的上部,所述柱塞的顶部安装于所述弹性件上；所述阀体上开设有第一连通口和第二连通口,以用于与所述阀体的内部连通,且所述第一连通口与所述第二连通口之间连通区域上安装有密封件,所述密封件上设有通孔；所述柱塞包括杆体和密封块,所述密封块设置于所述杆体的尾部；所述杆体部分容置于所述通孔内,所述密封块穿过所述通孔,并可与所述密封件的壁面抵接；所述第二连通口开设于阀体的侧壁上；本发明将第二连通口设置在阀体的侧壁上,解决了按压柱塞时,柱塞端部的密封块与积液吸引口之间距离缩短,使该处流通截面积减小,导致积液流通阻力增加的问题。(The suction valve of the invention comprises a valve body, an elastic piece, a plunger and a sealing piece; the elastic piece is arranged at the upper part of the valve body, and the top of the plunger is arranged on the elastic piece; a first communication port and a second communication port are formed in the valve body and are used for being communicated with the interior of the valve body, a sealing element is arranged on a communication area between the first communication port and the second communication port, and a through hole is formed in the sealing element; the plunger comprises a rod body and a sealing block, and the sealing block is arranged at the tail part of the rod body; the rod body part is accommodated in the through hole, and the sealing block penetrates through the through hole and can be abutted against the wall surface of the sealing element; the second communication port is formed in the side wall of the valve body; according to the invention, the second communication port is arranged on the side wall of the valve body, so that the problem that the flowing resistance of the accumulated liquid is increased due to the fact that the distance between the sealing block at the end part of the plunger and the accumulated liquid suction port is shortened when the plunger is pressed is solved.)

1. A suction valve characterized by: comprises a valve body, an elastic piece, a plunger and a sealing piece; the elastic piece is arranged at the upper part of the valve body, and the top of the plunger is arranged on the elastic piece; a first communication port and a second communication port are formed in the valve body and are used for being communicated with the interior of the valve body, a sealing element is arranged on a communication area between the first communication port and the second communication port, and a through hole is formed in the sealing element; the plunger comprises a rod body and a sealing block, and the sealing block is arranged at the tail part of the rod body; the rod body part is accommodated in the through hole, and the sealing block penetrates through the through hole and can be abutted against the wall surface of the sealing element; the second communicating opening is formed in the side wall of the valve body.

2. A suction valve as claimed in claim 1, wherein: the valve body is a part instead of being composed of an inner valve body and an outer valve body.

3. A suction valve as claimed in claim 1, wherein: the elastic piece is an elastic cap or a spring.

4. A suction valve as claimed in claim 1, wherein: the central body of the elastic part is provided with a first annular bump, the top of the plunger is provided with an annular groove, and the plunger is fixedly installed on the elastic part through the annular groove and the first annular bump in a matched and clamped mode.

5. A suction valve as claimed in claim 1, wherein: the annular seal groove has been seted up on the inner ring wall of elastic component, valve body tip an organic whole is provided with second annular lug, the seal groove with second annular lug sealing connection.

6. A suction valve as claimed in claim 1, wherein: the rod body is provided with a strip-shaped groove along the axial direction of the rod body, and the strip-shaped groove penetrates through the rod body.

7. A suction valve as claimed in claim 1, wherein: the contact surface of the sealing block and the sealing element is a conical surface matched with each other.

8. A suction valve as claimed in claim 1, wherein: and corners of the inner wall surface of the valve body communicated between the first communicating hole and the second communicating hole are arranged in a manner of chamfering.

9. An endoscope, comprising a suction valve as claimed in any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a suction valve and an endoscope.

Background

When the endoscope is used, medical personnel observe a diseased region through the endoscope, and can suck effusion in a patient body through the suction valve, so that effusion interference in the examination and treatment processes is eliminated, and the observation visual field is ensured.

Disclosure of Invention

Aiming at the defects of multiple valve body parts, complex assembly and easy blockage in the prior art, the invention provides a suction valve and an endoscope.

The invention provides a suction valve, which comprises a valve body, an elastic piece, a plunger and a sealing piece, wherein the valve body is provided with a valve seat; the elastic piece is arranged at the upper part of the valve body, and the top of the plunger is arranged on the elastic piece; a first communication port and a second communication port are formed in the valve body and are used for being communicated with the interior of the valve body, a sealing element is arranged on a communication area between the first communication port and the second communication port, and a through hole is formed in the sealing element; the plunger comprises a rod body and a sealing block, and the sealing block is arranged at the tail part of the rod body; the rod body part is accommodated in the through hole, and the sealing block penetrates through the through hole and can be abutted against the wall surface of the sealing element; the second communicating opening is formed in the side wall of the valve body.

Further, the valve body is a part, and is not composed of an inner valve body and an outer valve body together.

Further, the elastic member is an elastic cap or a spring.

Furthermore, the elastic part center is provided with a first annular bump integrally, an annular groove is formed in the top of the plunger, and the plunger is fixedly mounted on the elastic part through the annular groove and the first annular bump in a matched and clamped mode.

Furthermore, a sealing groove is annularly formed in the inner ring wall surface of the elastic piece, a second annular bump is integrally arranged at the end of the valve body, and the sealing groove is hermetically connected with the second annular bump.

Furthermore, a strip-shaped groove is formed in the rod body along the axis direction of the rod body, and penetrates through the rod body.

Furthermore, the contact surfaces of the sealing block and the sealing element are mutually matched conical surfaces.

Further, the corner of the inner wall surface of the valve body communicated between the first communication hole and the second communication hole is a fillet.

The present invention also provides an endoscope comprising a suction valve of one of the above.

The invention has the beneficial effects that:

1. the valve body in the invention is a component, and is not a combination form of the inner valve body and the outer valve body in the prior art, so that the suction valve can reduce the number of components and save the cost of parts and assembly cost;

2. through setting up the second intercommunication mouth on the lateral wall of valve body, when having solved the press plunger, the distance shortens between the sealed piece of plunger tip and the hydrops suction opening, makes this department flow cross section reduce, leads to the problem of hydrops circulation resistance increase.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic cross-sectional view of a suction valve according to an embodiment of the present invention; .

In the drawing, 10-a valve body, 101-a second communication port, 102-a first communication port, 1012-a rounded arc surface, 103-a mounting groove, 104-a second annular bump, 20-an elastic piece, 201-a sealing groove, 202-a first annular bump, 30-a plunger, 301-a rod body, 302-an annular groove, 303-a sealing block, 3011-a strip-shaped groove, 40-a sealing piece and 401-a through hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1, the present invention provides a suction valve including a valve body 10, an elastic member 20, a plunger 30, and a sealing member 40; the elastic member 20 may be an elastic cap or a spring in this embodiment, specifically, the elastic cap may be made of a silicone material, and the elastic member 20 is connected to the upper portion of the valve body 10, and it should be noted that the valve body 10 in the present invention is a component, rather than a combination form of an inner valve body and an outer valve body in the prior art, so that the suction valve of the present invention may reduce the number of components, and save the cost of parts and assembly cost; elastic component 20 center an organic whole is provided with first annular lug 202, an annular groove 302 has been seted up at plunger 30 top, plunger 30 passes through annular groove 302 with first annular lug 202 joint, specifically, annular groove 302 with first annular lug 202 sealing connection, sealing connection can be interference fit, also can link together through the form of bonding, with its fixed mounting in on the elastic component 20. The annular seal groove 201 has been seted up on the inner ring wall of elastic component 20, valve body 10 tip an organic whole is provided with second annular lug 104, seal groove 201 with second annular lug 104 sealing connection, sealing connection can be interference fit, also can link together through the form of bonding, with its fixed mounting on valve body 10. Through the structure, the sealing performance of the valve body 10 after being connected with the elastic piece 20 is guaranteed, and the sealing performance of the elastic piece 20 after being connected with the plunger 30 is also guaranteed.

The plunger 30 is provided coaxially with the valve body 10; a first communication port 102 and a second communication port 101 are formed in the valve body 10 and used for communicating with the interior of the valve body 10, a sealing element 40 is installed on a communication area between the first communication port 102 and the second communication port 101, for a specific installation mode of the sealing element 40, an installation groove 103 can be formed in the inner wall of the valve body 10, and the sealing element 40 is fixedly installed on the installation groove 103; the sealing member 40 is provided with a through hole 401, and the sealing member 40 is arranged coaxially with the valve body 10.

The corner of the inner wall surface of the valve body 10, at which the first communication port 102 and the second communication port 101 communicate with each other, is a rounded arc surface 1012. It should be noted that, the fluid forms a vortex at the right angle corner in the flowing process, and the vortex can cause the increase of the fluid flowing resistance, resulting in the unsmooth effusion suction process. Therefore, the corners of the inner wall surface of the valve body 10, which are communicated with the second communication port 101, of the first communication port 102 are rounded, so that formation of eddy can be effectively avoided or reduced, and smoothness of the effusion pumping process is guaranteed.

The plunger 30 comprises a rod body 301 and a sealing block 303, wherein the sealing block 303 is arranged at the tail part of the rod body 301; the rod body 301 is partially accommodated in the through hole 401, and the sealing block 303 penetrates through the through hole 401 and can be abutted against the wall surface of the sealing element 40; furthermore, the contact surface of the sealing block 303 and the sealing element 40 is a mutually matched conical surface, so that the two contact surfaces can be tightly attached under the action of the elastic restoring force of the elastic element 20, the displacement is not easy to occur, and the sealing performance of the valve body 10 is ensured.

Unlike the prior art, the second communication port 101 of the present invention is opened in the side wall of the valve body 10. The problem of when pressing plunger 30, the sealed piece 303 of plunger 30 tip shortens with the distance between the hydrops suction opening, makes this department flow cross section reduce, leads to hydrops circulation resistance to increase is solved.

In order to further improve that after the sealing block 303 and the sealing element 40 are unsealed, the accumulated liquid can smoothly pass through the through hole 401 of the sealing element 40, the rod body 301 is provided with a strip-shaped groove 3011 along the axial direction of the rod body 301, and the strip-shaped groove 3011 penetrates through the rod body 301, so that the flow cross-sectional area of the accumulated liquid is increased, the flow resistance is reduced, and the overall flow rate is improved when the valve body 10 operates.

In summary, the following steps: the invention has simple structure, less parts and easy assembly; the second communication port is arranged on the side wall of the valve body, so that the problem that when the plunger is pressed, the distance between the sealing block at the end part of the plunger and the effusion suction port is shortened, the flow cross section at the position is reduced, and the effusion flow resistance is increased is solved; the elastic piece is made of a silica gel material, has no toxic or harmful effect on a human body, has elastic restoring force, and has excellent sealing effect by adopting interference fit at the joint.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.