CN106641325B - Novel medical diaphragm type pinch valve - Google Patents
Novel medical diaphragm type pinch valve Download PDFInfo
- Publication number
- CN106641325B CN106641325B CN201710101448.6A CN201710101448A CN106641325B CN 106641325 B CN106641325 B CN 106641325B CN 201710101448 A CN201710101448 A CN 201710101448A CN 106641325 B CN106641325 B CN 106641325B
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- China
- Prior art keywords
- diaphragm
- push rod
- valve body
- lining
- pinch valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
- F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
- F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Abstract
The invention provides a novel medical diaphragm type pinch valve, and belongs to the technical field of medical blood collection and transfusion devices. The pinch valve comprises a valve body, a cavity with an opening at one end is formed in the upper portion of the valve body, a lining is arranged in the valve body, a push rod and an air cylinder are arranged in the lining, the pinch valve further comprises a diaphragm, the diaphragm is located between the cavity and the push rod, and two ends of the diaphragm are fixed between the lining and the inner side wall of the valve body. The medical diaphragm type pinch valve adopts the elastic rubber diaphragm, and the elasticity and the deformation of the rubber diaphragm are utilized to generate gradual change tension in the opening and closing processes of the valve, so that the violent impact of the valve seat is relieved, and the noise level is reduced.
Description
Technical Field
The invention belongs to the technical field of medical blood collection and transfusion devices, and particularly relates to a novel medical diaphragm type pinch valve.
Background
In the field of blood collection and transfusion, a pinch valve is mainly adopted to cut off and circulate a blood collection and transfusion rubber pipeline so as to realize the control of blood flow. The common pinch valves have two structural forms: the electromagnetic pinch valve and the pneumatic pinch valve can cause severe impact between the opening and closing parts when the valves are opened and closed, generate noise, possibly generate moods, anxiety and other emotions for blood collection and transfusion personnel, and are not beneficial to smooth blood collection and transfusion.
Disclosure of Invention
The invention aims to provide a novel medical pinch valve aiming at the defects of the prior art. The pinch valve adopts an elastic rubber diaphragm, and gradual tension is generated by utilizing the elasticity and deformation of the rubber diaphragm in the opening and closing processes of the valve, so that the violent impact of the valve seat is relieved, and the noise level is reduced. The purpose of the invention is realized by the following technical scheme:
the utility model provides a novel medical diaphragm type pinch valve, includes the valve body, the upper portion of valve body has the open-ended cavity for one end, be provided with the inside lining in the valve body, be provided with push rod and cylinder in the inside lining, pinch valve still includes the diaphragm, the diaphragm is located between cavity and the push rod, the both ends of diaphragm are fixed between inside lining and the valve body inside wall.
As a specific embodiment of the novel medical diaphragm type pinch valve, the lining is distributed on two inner side walls of the valve body.
As a specific embodiment of the novel medical diaphragm type pinch valve of the present invention, the diaphragm is an elastic rubber diaphragm.
As a specific embodiment of the novel medical diaphragm type pinch valve of the present invention, the push rod is in a T shape with a specific convex middle.
As an embodiment of the novel medical membrane type pinch valve of the present invention, the push rod is perpendicular to the liner.
As a specific embodiment of the novel medical diaphragm type pinch valve of the present invention, a sealing ring is disposed at a vertical connection position of the push rod and the lining.
As a specific embodiment of the novel medical diaphragm type pinch valve of the present invention, the sealing ring is a graphite sealing ring.
As a specific embodiment of the novel medical diaphragm type pinch valve, a water line is arranged at the joint of the inner side wall of the valve body and the diaphragm.
As a specific embodiment of the novel medical diaphragm type pinch valve, the joint of the lining, the inner side wall of the valve body and the cylinder adopts an end angle surface sealing structure.
As a specific embodiment of the novel medical diaphragm type pinch valve of the present invention, an O-ring is disposed in the end face sealing structure.
The invention has the beneficial effects that: the medical diaphragm type pinch valve adopts the elastic rubber diaphragm, and the elasticity and the deformation of the rubber diaphragm are utilized to generate gradual-change tension in the opening and closing process of the valve, so that the violent impact of the valve seat is relieved, and the noise level is reduced.
Drawings
FIG. 1 is a main schematic view of a medical diaphragm type pinch valve structure according to the present invention;
FIG. 2 is a right schematic view of a medical diaphragm type pinch valve structure according to the present invention;
FIG. 3 is an enlarged view of the water line structure of the medical diaphragm type pinch valve of the present invention;
FIG. 4 is an enlarged view of the medical diaphragm type pinch valve angle sealing structure according to the present invention;
1-valve body, 2-diaphragm, 3-blood collection and transfusion rubber tube, 4-push rod, 5-lining, 6-sealing ring, 7-cylinder, 8-end angle face sealing structure and 9-cavity.
Detailed Description
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. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The invention provides a novel medical pinch valve, which is characterized in that an elastic rubber diaphragm is arranged in the pinch valve, and the elasticity and the gradual change tension generated during deformation of the rubber diaphragm are utilized in the process of opening and closing a valve to slow down the violent impact of a valve seat, so that the noise level is reduced.
The utility model provides a novel medical diaphragm formula pinch valve, as shown in fig. 1 and fig. 2, includes valve body 1, the upper portion of valve body 1 has open-ended cavity 9 for one end, be provided with inside lining 5 in the valve body 1, be provided with push rod 4 and cylinder 7 in the inside lining 5, pinch valve still includes diaphragm 2, diaphragm 2 is located between cavity 9 and push rod 4, diaphragm 2's both ends are fixed between inside lining 5 and the 1 inside wall of valve body.
The liners 5 are preferably distributed on two inner side walls of the valve body 1, so that the diaphragms 2 can be conveniently placed and fixed; the cavity 9 is used for placing the blood collection and transfusion rubber tube 3. According to the invention, the diaphragm 2 is arranged between the cavity 9 and the push rod 4, two ends of the diaphragm 2 are fixed between the lining 5 and the inner side wall of the valve body 1, and two ends of the diaphragm 2 are connected and tightly pressed between the valve body 1 of the lining 5 through threads, so that the firmness and the sealing property of the diaphragm 2 can be ensured.
In order to ensure that the diaphragm 2 is compressed and deformed when being pushed by the push rod 4 and gradually changes tension after compression, and to slow down violent impact of the push rod 4 and the valve body 1, the diaphragm 2 is preferably an elastic rubber diaphragm with elastic variable. The shape and material of the diaphragm 2 are not particularly limited, and any form of diaphragm 2 may be used as long as it is made of an elastic soft material (particularly, an elastic rubber material), which can reduce the impact between the push rod 4 and the valve body 1 and reduce the noise level.
Further, in order to realize the movement of the push rod 4 to the diaphragm 2, the push rod 4 is preferably in a T shape with a specific convex middle. And the push rod 4 is perpendicular to the lining 5, and more preferably, both ends of the T-shape of the push rod 4 are perpendicular to the lining 5. Meanwhile, in order to improve the sealing performance of the push rod 4, a sealing ring 6, preferably a graphite sealing ring, is arranged at the vertical connection position of the push rod 4 and the lining 5.
Further, the joint of the inner side wall of the valve body 1 and the diaphragm 2 is provided with a water line, as shown in fig. 3, the arrangement of the water line can improve the sealing property of the connection of the valve body 1 and the diaphragm 2. The junction of the inner liner 5, the inner side wall of the valve body 1 and the cylinder 7 adopts an end angle face sealing structure 8, as shown in fig. 4, furthermore, an O-shaped ring is arranged in the end angle face sealing structure, and the sealing is realized by pressing the O-shaped ring and the cylinder 7.
The medical diaphragm type pinch valve of the invention has the specific working principle and process as follows: the blood collection and transfusion rubber tube 3 is placed into the cavity 9 from the opening of the cavity 9, when the blood circulation needs to be cut off, the air cylinder 7 is inflated, the liner 5 is filled with compressed gas, the push rod 4 is pushed to move upwards, the diaphragm 2 is deformed, the push rod 4 continues to move upwards until the blood collection and transfusion rubber tube 3 deforms, and the blood is cut off to pass through; in the process, due to the elasticity and the deformation tension of the diaphragm 2, the violent impact of the push rod 4 and the valve body 1 is relieved, and the noise level is reduced. When blood circulation is needed, the air cylinder 7 is deflated, compressed air in the lining 5 is gradually discharged, the pressure on the push rod 4 is reduced, the diaphragm 2 generates tension due to the fact that the original shape of the diaphragm is recovered, the push rod 4 is pushed to move downwards under the action of the tension of the diaphragm 2, meanwhile, the blood transfusion rubber tube 3 recovers the shape, the blood circulates again, the deformation of the diaphragm 2 is gradually recovered in the process, the force acting on the push rod 4 is gradually reduced, violent impact between the push rod 4 and the air cylinder 7 is relieved, and the noise level is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A novel medical diaphragm type pinch valve is characterized by comprising a valve body, wherein the upper part of the valve body is a cavity with an opening at one end, a lining is arranged in the valve body, a push rod and an air cylinder are arranged in the lining, the pinch valve further comprises a diaphragm, the diaphragm is positioned between the cavity and the push rod, and two ends of the diaphragm are fixed between the lining and the inner side wall of the valve body;
the push rod is vertical to the lining; a sealing ring is arranged at the vertical connection part of the push rod and the lining; a water line is arranged at the joint of the inner side wall of the valve body and the diaphragm;
when blood circulation needs to be cut off, the air cylinder is inflated, the liner is filled with compressed gas, the push rod is pushed to move upwards, the diaphragm is deformed, and the push rod continues to move upwards and is contacted with the blood collection and transfusion rubber tube through the diaphragm until the blood collection and transfusion rubber tube deforms;
the inner liners are distributed on two inner side walls of the valve body;
and the joint of the lining, the inner side wall of the valve body and the cylinder adopts an end angle surface sealing structure.
2. The novel medical diaphragm pinch valve of claim 1, wherein the diaphragm is an elastic rubber diaphragm.
3. The novel medical diaphragm type pinch valve of claim 1, wherein the push rod is T-shaped with a specific bulge in the middle.
4. The novel medical diaphragm pinch valve of claim 1, wherein the sealing ring is a graphite sealing ring.
5. The novel medical diaphragm pinch valve of claim 1, wherein an O-ring is disposed within the endface seal arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101448.6A CN106641325B (en) | 2017-02-24 | 2017-02-24 | Novel medical diaphragm type pinch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101448.6A CN106641325B (en) | 2017-02-24 | 2017-02-24 | Novel medical diaphragm type pinch valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106641325A CN106641325A (en) | 2017-05-10 |
| CN106641325B true CN106641325B (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710101448.6A Active CN106641325B (en) | 2017-02-24 | 2017-02-24 | Novel medical diaphragm type pinch valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN106641325B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695561A (en) * | 2018-03-15 | 2019-04-30 | 常州威图流体科技有限公司 | A kind of miniature antiseep fluid delivery system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172580A (en) * | 1977-09-06 | 1979-10-30 | Red Valve Company Inc. | Pinch valve |
| JPS56109967A (en) * | 1980-01-28 | 1981-08-31 | Ckd Controls Ltd | Thermal pinch valve |
| GB2125938A (en) * | 1982-01-27 | 1984-03-14 | Eltek Srl | Thermoelectric valves |
| CN86203918U (en) * | 1986-05-17 | 1987-08-12 | 李卫国 | Valve with soft diaphragm |
| JP2001141082A (en) * | 1999-02-17 | 2001-05-25 | Toto Ltd | Tube for pinch valve |
| JP2003314714A (en) * | 2002-04-16 | 2003-11-06 | Iwaki Co Ltd | Control valve |
| JP2005207470A (en) * | 2004-01-21 | 2005-08-04 | Asahi Organic Chem Ind Co Ltd | Pinch valve |
| EP1564456A1 (en) * | 2004-02-12 | 2005-08-17 | Red Valve Company, Inc. | Flexible pinch valve |
| CN206496032U (en) * | 2017-02-24 | 2017-09-15 | 四川南格尔生物科技有限公司 | A kind of new medical diaphragm type pinch valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1097778B (en) * | 1958-07-25 | 1961-01-19 | Fritz Duerholdt | Hose valve |
| GB2147394B (en) * | 1983-09-30 | 1987-07-15 | Ben Joseph Gallant | Tube flow shut-off device |
| CN2869488Y (en) * | 2006-01-20 | 2007-02-14 | 深圳迈瑞生物医疗电子股份有限公司 | Pneumatic pressure cut-off valve |
| DE102011055850B3 (en) * | 2011-11-30 | 2012-11-29 | Sartorius Weighing Technology Gmbh | pinch |
| US9364655B2 (en) * | 2012-05-24 | 2016-06-14 | Deka Products Limited Partnership | Flexible tubing occlusion assembly |
| FR2993572B1 (en) * | 2012-07-23 | 2016-04-15 | Emd Millipore Corp | CIRCUIT FOR BIOLOGICAL LIQUID COMPRISING A PINCH VALVE |
-
2017
- 2017-02-24 CN CN201710101448.6A patent/CN106641325B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172580A (en) * | 1977-09-06 | 1979-10-30 | Red Valve Company Inc. | Pinch valve |
| JPS56109967A (en) * | 1980-01-28 | 1981-08-31 | Ckd Controls Ltd | Thermal pinch valve |
| GB2125938A (en) * | 1982-01-27 | 1984-03-14 | Eltek Srl | Thermoelectric valves |
| CN86203918U (en) * | 1986-05-17 | 1987-08-12 | 李卫国 | Valve with soft diaphragm |
| JP2001141082A (en) * | 1999-02-17 | 2001-05-25 | Toto Ltd | Tube for pinch valve |
| JP2003314714A (en) * | 2002-04-16 | 2003-11-06 | Iwaki Co Ltd | Control valve |
| JP2005207470A (en) * | 2004-01-21 | 2005-08-04 | Asahi Organic Chem Ind Co Ltd | Pinch valve |
| EP1564456A1 (en) * | 2004-02-12 | 2005-08-17 | Red Valve Company, Inc. | Flexible pinch valve |
| CN206496032U (en) * | 2017-02-24 | 2017-09-15 | 四川南格尔生物科技有限公司 | A kind of new medical diaphragm type pinch valve |
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| Publication number | Publication date |
|---|---|
| CN106641325A (en) | 2017-05-10 |
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Effective date of registration: 20220126 Address after: 610000 Chengdu Tianfu international biological city, Chengdu, Sichuan Province (618 Fenghuang Road, Shuangliu District) Applicant after: Sichuan Tianfu nanger biomedical Co.,Ltd. Address before: No.28 Kuixing Road, Dongxi Town, Jianyang City, Ziyang City, Sichuan Province 641403 Applicant before: SICHUAN NIGALE BIOTECHNOLOGY Co.,Ltd. |
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