CN213491513U - Automatic switching device for knob of medical three-way valve - Google Patents
Automatic switching device for knob of medical three-way valve Download PDFInfo
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- CN213491513U CN213491513U CN202021876172.2U CN202021876172U CN213491513U CN 213491513 U CN213491513 U CN 213491513U CN 202021876172 U CN202021876172 U CN 202021876172U CN 213491513 U CN213491513 U CN 213491513U
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- way valve
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Abstract
The utility model provides a knob automatic switching device of a medical three-way valve, a fixed valve seat is fixedly connected with a frame, and a valve seat groove for fixing a base of the three-way valve is arranged on the fixed valve seat so as to prevent the base of the three-way valve from rotating; the fixed valve seat is also provided with a through hole, a knob of the three-way valve penetrates through the through hole to be connected with a knob seat, a knob groove used for containing the knob is arranged on the knob seat, the knob seat is connected with a switching knob motor, and the switching knob motor is fixedly connected with the rack. By adopting the common medical three-way valve and matching with an automatic switching knob device, the automatic switching of fluid media in the pipeline can be realized. And medical three-way valve and switching knob device can be convenient fixed and separation to use cost can be reduced when pipeline and medical three-way valve disposable.
Description
Technical Field
The utility model relates to the field of medical equipment, especially a medical three-way valve knob automatic switching control equipment.
Background
Many of the existing medical devices require automatic switching of the flow direction of the medium in the tubing, and the prior art generally employs solenoid valves, which require adequate cleanliness of the associated tubing or automatic valves for certain liquids, such as blood. It is very difficult to sterilize these lines or valves. The cost of using disposable tubing and automatic valves is very high. The valves of these medical instruments can only be switched manually at present. Chinese patent document CN101574555A describes a medical manual automatic control precision filtering valve, but the structure of the valve is adopted by non-standard parts, and the cost is high. CN205759062U describes a medical miniature automatic controllable valve for precise microinjection, in which a valve seat is driven by a motor to move along the radial direction of a screw rod, so as to drive a valve core to displace in a taper reducing structure space. The structure is also complex and the implementation cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a medical three-way valve knob automatic switching control equipment is provided, can realize the flow direction of medium in the automatic switch-over pipeline, and convenient operation, use cost is lower.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a fixed valve seat is fixedly connected with a rack, and a valve seat groove for fixing a base of a three-way valve is arranged on the fixed valve seat so as to prevent the base of the three-way valve from rotating;
the fixed valve seat is also provided with a through hole, a knob of the three-way valve penetrates through the through hole to be connected with a knob seat, a knob groove used for containing the knob is arranged on the knob seat, the knob seat is connected with a switching knob motor, and the switching knob motor is fixedly connected with the rack.
In a preferred embodiment, the valve seat grooves are three and are circumferentially spaced by 90 °.
In a preferred scheme, the width of the valve seat groove is smaller than or equal to the width of the three-way valve connector.
In a preferred scheme, a flexible friction layer is arranged on the inner wall of the valve seat groove, so that the three-way valve connector is fixed in the valve seat groove.
In the preferred scheme, the knob seat is of a circular ring structure with a closed bottom, and the knob seat is fixedly connected with an output shaft of the speed reducer through a flange structure or a hole structure with a straight edge.
In a preferred scheme, the side wall of the knob groove is attached to the side wall of the knob.
In the preferred scheme, the knob seat is connected with a switching knob motor through a speed reducer.
In a preferred scheme, the speed reducer is a spur gear speed reducer, a planetary speed reducer or an RV speed reducer.
In a preferred scheme, the switching knob motor is a Hall motor or a servo motor.
The utility model provides a pair of medical three-way valve knob automatic switching control equipment through adopting ordinary medical three-way valve, cooperates automatic switching knob device, can realize the automatic switch-over of fluid medium in the pipeline. And medical three-way valve and switching knob device can be convenient fixed and separation to use cost can be reduced when pipeline and medical three-way valve disposable.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a perspective exploded view of the middle switch knob device of the present invention.
Fig. 2 is a perspective view of the middle switch knob device of the present invention.
Fig. 3 is a schematic view of the overall structure of the device according to the present invention.
In the figure: the automatic blood sampling device comprises a rotary joint 1, a first injector 2, a centrifugal device 3, a rotary bracket 4, a lifting groove 5, a rack 6, a lifting bracket device 7, a fixed seat 8, a switching knob device 9, a three-way valve 91, a knob 92, a fixed valve seat 93, a knob seat 94, a speed reducer 95, a switching knob motor 96, a valve seat groove 97, a knob groove 98, a second injector 10, a blood detection device 11, a third injector 12, a filter 13, a clamping plate 14, a main pipe 15, a first branch pipe 16 and a second branch pipe 17.
Detailed Description
Example 1:
a fixed valve seat 93 is fixedly connected with a rack 6, and a valve seat groove 97 used for fixing a base of a three-way valve 91 is arranged on the fixed valve seat 93 so as to prevent the base of the three-way valve 91 from rotating;
the fixed valve seat 93 is further provided with a through hole, a knob of the three-way valve 91 penetrates through the through hole to be connected with a knob seat 94, a knob groove 98 for accommodating the knob is formed in the knob seat 94, the knob seat 94 is connected with a switching knob motor 96, and the switching knob motor 96 is fixedly connected with the rack 6.
In a preferred embodiment, the valve seat grooves 97 are three and are circumferentially spaced at 90 ° intervals. With this structure, it is convenient to embed the three connectors of the three-way valve 91.
In a preferred embodiment, the width of the valve seat groove 97 is smaller than or equal to the width of the connection head of the three-way valve 91.
In a preferred embodiment, a flexible friction layer is disposed on the inner wall of the valve seat recess 97, so that the three-way valve 91 is fixed in the valve seat recess 97.
In a preferred embodiment, the knob seat 94 is a circular ring structure with a closed bottom, and the knob seat 94 is fixedly connected with the output shaft of the speed reducer 95 through a flange structure or a hole structure with a straight edge.
In a preferred embodiment, the side walls of the knob recess 98 engage the side walls of the knob.
In a preferred embodiment, the knob base 94 is connected to a switching knob motor 96 through a speed reducer 95.
In a preferred embodiment, the reducer 95 is a spur gear reducer, a planetary reducer, or an RV reducer.
In a preferred embodiment, the switching knob motor 96 is a hall motor or a servo motor.
With the above configuration, the three-way valve 91 is automatically switched. When the three-way valve 91 is used, the three-way valve 91 is arranged in the switching knob device 9, the base of the three-way valve 91 is embedded into the fixed valve seat 93, the knob of the three-way valve 91 extends into the knob seat 94, when the switching knob motor 96 drives the knob seat 94 to rotate through the speed reducer 95, the knob of the three-way valve 91 rotates along with the knob, the base of the three-way valve 91 is limited by the groove on the fixed valve seat 93, and therefore relative movement between the knob and the base is achieved. When the work is completed, the three-way valve 91 is taken out from the switching knob device 9, and other disposable lines and the three-way valve 91 can be replaced.
Example 2:
as shown in fig. 3, an automatic blood separation system includes a frame 6, which further includes a centrifuge, a first collection device, a second collection device, and a tubing system;
the centrifugal device is used for fixing the first injector 2 and driving the first injector 2 to rotate, and is also provided with a rotating bracket 4 which can rotate along with the first injector 2 and push a piston rod of the first injector 2;
the first collection device is used for fixing the second syringe 10 and can suck the piston rod of the second syringe 10;
the second collection device is used for fixing the third syringe 12 and can suck the piston rod of the third syringe 12;
the pipeline system comprises a main pipe 15, a first branch pipe 16 and a second branch pipe 17, one end of the main pipe 15 is communicated with the first injector 2 through a rotary joint 1, the rotary joint 1 can realize relative rotation while being connected in a sealing manner, the other end of the main pipe is connected with an exhaust one-way valve or a filter 13, and the main pipe 15 is respectively communicated with the first branch pipe 16 and the second branch pipe 17 through two three-way valves 91; the first branch 16 communicates with the second injector 10 and the second branch 17 communicates with the third injector 12. Two three-way valves 91 are respectively installed in the two switching knob devices 9. By the structure, the blood separation work can be conveniently finished in a sealed and clean environment, the blood can be separated without contacting air, the blood can be separated in a centrifugal process, the separation quality can be improved, and the blood components among layers are easily mixed with each other due to sedimentation when the separation is stopped, so that the separation quality is difficult to guarantee.
When in use, the following steps are adopted: s1, directly centrifuging the first injector 2 which collects the original blood by the centrifugal device;
s2, after the centrifugal separation, without stopping the centrifugal separation, the three-way valve 91 is switched by the switching knob 9 to connect the first injector 2 with the second injector 10 and to cut off the third injector 12, i.e. the main pipe 15 is connected with the first branch pipe 16 and the main pipe 15 is cut off from the second branch pipe 17;
s3, sucking by the second injector 10, and completely sucking the upper serum into the second injector 10;
a blood detection device 11 is arranged on the pipeline, and the blood detection device 11 controls the suction stop time;
s4, the three-way valve 91 is switched by the switching knob device 9 to enable the first injector 2 to be communicated with the third injector 12 and to be cut off from the second injector 10;
namely, the main pipe 15 is cut off from the first branch pipe 16, and the main pipe 15 is communicated with the second branch pipe 17;
s5, pumping by the third injector 12, pumping the middle layer white blood cells and the platelets to the third injector 12, and controlling the pumping stop time by the blood detection device 11;
through the steps, the blood is automatically separated.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (9)
1. The utility model provides a medical three-way valve knob automatic switching control equipment which characterized by: the fixed valve seat (93) is fixedly connected with the rack (6), and a valve seat groove (97) for fixing a base of the three-way valve (91) is formed in the fixed valve seat (93) so as to prevent the base of the three-way valve (91) from rotating;
the fixed valve seat (93) is also provided with a through hole, a knob of the three-way valve (91) penetrates through the through hole to be connected with a knob seat (94), a knob groove (98) used for accommodating the knob is formed in the knob seat (94), the knob seat (94) is connected with a switching knob motor (96), and the switching knob motor (96) is fixedly connected with the rack (6).
2. The automatic knob switching device for a medical three-way valve according to claim 1, which is characterized in that: the valve seat grooves (97) are three and are separated by 90 degrees on the circumference.
3. The automatic knob switching device for a medical three-way valve according to claim 1, which is characterized in that: the width of the valve seat groove (97) is less than or equal to the width of the connector of the three-way valve (91).
4. The automatic knob switching device for a medical three-way valve according to claim 3, wherein: a flexible friction layer is arranged on the inner wall of the valve seat groove (97) so that the connector of the three-way valve (91) is fixed in the valve seat groove (97).
5. The automatic knob switching device for a medical three-way valve according to claim 1, which is characterized in that: the knob seat (94) is of a circular ring structure with a closed bottom, and the knob seat (94) is fixedly connected with an output shaft of the speed reducer (95) through a flange structure or a hole structure with a straight edge.
6. The automatic knob switching device for a medical three-way valve according to claim 1 or 5, wherein: the side wall of the knob groove (98) is attached to the side wall of the knob.
7. The automatic knob switching device for a medical three-way valve according to claim 1, which is characterized in that: the knob seat (94) is connected with a switching knob motor (96) through a speed reducer (95).
8. The automatic knob switching device for a medical three-way valve according to claim 7, wherein: the reducer (95) is a spur gear reducer, a planetary reducer or an RV reducer.
9. The automatic knob switching device for a medical three-way valve according to claim 1, which is characterized in that: the switching knob motor (96) is a Hall motor or a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021876172.2U CN213491513U (en) | 2020-09-01 | 2020-09-01 | Automatic switching device for knob of medical three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021876172.2U CN213491513U (en) | 2020-09-01 | 2020-09-01 | Automatic switching device for knob of medical three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213491513U true CN213491513U (en) | 2021-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021876172.2U Active CN213491513U (en) | 2020-09-01 | 2020-09-01 | Automatic switching device for knob of medical three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213491513U (en) |
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2020
- 2020-09-01 CN CN202021876172.2U patent/CN213491513U/en active Active
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