CN105641779B - Infusion flow speed regulator - Google Patents
Infusion flow speed regulator Download PDFInfo
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- CN105641779B CN105641779B CN201510961834.3A CN201510961834A CN105641779B CN 105641779 B CN105641779 B CN 105641779B CN 201510961834 A CN201510961834 A CN 201510961834A CN 105641779 B CN105641779 B CN 105641779B
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- adjusting rod
- adjusting
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- channel
- rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
- A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a transfusion flow velocity regulator, which conducts liquid through a fixed base or the fixed base and an adjusting rod, and moves along an adjusting rod channel through the adjusting rod to adjust the cross section area of a liquid flow channel for transfusion at a speed adjusting position so as to change the transfusion flow velocity in a transfusion device.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an infusion flow rate regulator.
Background
Infusion therapy is an important clinical treatment means, and can be applied to infusion devices or infusion pumps of various infusion regulators so as to be suitable for different occasions.
The basic principle of the existing common transfusion regulator is basically the same, and the pulley is arranged outside the transfusion conduit, and the shape of the transfusion conduit is changed by mainly extruding the transfusion conduit through the pulley, so that the cross-sectional area of a liquid flow channel of the transfusion conduit is changed, namely, the transfusion flow rate is regulated by changing the cross-sectional area of the liquid flow channel of the transfusion conduit.
The common transfusion regulator can be operated by one hand, and can realize stepless regulation of the transfusion flow rate, but because the transfusion conduit is a flexible pipe with elasticity and smooth surface, the pulley can be pushed from a set position in the transfusion process, even pushed away to completely slip, so that the transfusion flow rate is out of control, and the transfusion flow rate exceeding the preset speed can cause serious medical accidents of heart failure, death and the like of patients clinically, thereby forming great potential safety hazards. The method for increasing the times of patrol and proofreading of the nursing staff is used for finding the drift of the infusion flow rate and correcting the drift in time clinically, so that the harm caused by the condition is avoided, but the method obviously increases the workload of the nursing staff.
Meanwhile, because the infusion catheter has elasticity and is deformed and cannot be restored after being extruded for a long time, when the infusion catheter is clinically and practically applied, the cross section area of a liquid flow channel of the infusion catheter is unpredictably judged, so that an operator cannot judge the cross section area of the extruded infusion catheter according to the position of the pulley, further cannot judge the infusion flow rate, the operator is required to match a timer for multiple times of manual checking during adjustment every time to reach a desired value, time and labor are wasted, errors are large, the workload of nursing staff is increased, particularly when the clinical infusion workload is large, the waiting time of a patient is increased, and treatment is delayed. Flow regulation relies more on the experience of the operator than the flow regulator itself, and cannot be used when precise control of infusion flow rate is required.
The prior common flow setting type transfusion device in clinic adopts a liquid flow channel with continuously variable preset cross-sectional area and fixed shape, a liquid outlet is communicated with a liquid inlet through the liquid flow channel, and the purpose of regulating the transfusion flow speed is achieved through the difference of the cross-sectional areas of the corresponding liquid flow channels between the liquid inlet and the liquid outlet.
The flow setting formula infusion regulator can realize the infinitely variable control of the infusion velocity of flow, can solve the drift of infusion velocity of flow, but technology is complicated, needs both hands to operate, and the cost of manufacture is higher, and the velocity of flow scale is the design of annular curved surface, needs the manual rotation side can observe the flow scale, the inconvenient nurse condition of patrolling the infusion. When high-viscosity or high-precipitation liquid such as blood products, venous nutrition, mannitol and the like is infused, the preset liquid flow channel is small in cross section area, long in stroke and easy to block, so that the liquid flow channel is difficult to popularize clinically.
In clinical practical application, the volume of a single drop of different liquid medicines is different and is generally between 0.043 and 0.05ml, and the special medicines exceed the range. The existing flow setting type regulator cannot meet the change of the volume of a single drop of liquid medicine, so that the operation according to the drop is more accurate during clinical transfusion, and the transfusion flow rate is generally regulated by referring to the volume of the single drop of different liquid medicines by nursing staff clinically.
When the accurate control infusion flow rate is needed, the infusion pump is generally used, but the infusion pump needs to be used under the condition of a power supply, is inconvenient to carry, high in price, unfavorable to popularize, too complex to operate, and not visual, simple and convenient enough.
Disclosure of Invention
The invention aims to provide an infusion flow rate regulator which is convenient to operate and can more accurately control the infusion flow rate.
The technical scheme adopted by the invention is as follows:
a transfusion flow velocity regulator comprises a fixed base provided with a fixed base liquid inlet and a fixed base liquid outlet and an adjusting rod arranged on the fixed base; the adjusting rod is provided with a liquid flow channel connected between the liquid inlet of the fixed base and the liquid outlet of the fixed base; an adjusting rod channel is arranged on the fixed base; a movable adjusting rod is arranged in the adjusting rod channel, and the adjusting rod channel are sealed in a watertight manner; the cross-sectional area of the liquid flow channel for liquid to pass through is adjusted by adjusting the area of the overlapped part of the shape of the upper bottom of the fixed base and the cross-sectional shape of the liquid flow channel on the adjusting rod.
A transfusion flow velocity regulator comprises a fixed base provided with a fixed base liquid inlet and a fixed base liquid outlet and an adjusting rod arranged on the fixed base; the adjusting rod is provided with a liquid flow channel connected between the liquid outlet of the fixed base and the liquid inlet of the adjusting rod; an adjusting rod channel is arranged on the fixed base; a movable adjusting rod is arranged in the adjusting rod channel, and the adjusting rod channel are sealed in a watertight manner; the adjusting rod is provided with an adjusting rod liquid inlet and an adjusting rod liquid outlet which are communicated with the fixed base liquid outlet; the cross-sectional area of the liquid flow channel for liquid to pass through is adjusted by adjusting the area of the overlapped part of the shape of the upper bottom of the fixed base and the cross-sectional shape of the liquid flow channel on the adjusting rod.
As further improvement of the technical scheme of the invention, the fixed base is provided with an adjusting rod channel communicated with the liquid pipeline of the fixed base.
As a further improvement of the technical scheme of the invention, the adjusting rod channel is arranged perpendicular to the liquid flow channel.
As a further improvement of the technical scheme of the invention, at least one liquid flow channel is arranged.
As a further improvement of the technical scheme of the invention, the liquid flow channel is a groove distributed at intervals or a groove with continuously changed cross section area.
As a further improvement of the technical scheme of the invention, the minimum cross-sectional area of the liquid pipeline on the fixed base is larger than or equal to the maximum cross-sectional area of the liquid flow channel.
The flow channel can be completely intercepted by changing the length and/or the angle of the channel embedded into the regulating rod at the bottom, and when the shape of the section of the flow channel on the regulating rod is zero, the flow channel can present the maximum liquid flow through the liquid.
The adjusting rod is further improved by the technical scheme of the invention, at least one liquid flow channel with a through hole is arranged on the adjusting rod, and the flow velocity is adjusted by changing the area of the intersection part between the cross section of the through hole on the adjusting rod and the shape of the bottom on the fixed base through vertical motion of the adjusting rod.
As a further improvement of the technical scheme of the invention, the adjusting rod is provided with a liquid flow channel with continuously changed cross-sectional area, and the adjusting rod adjusts the flow rate by changing the size of the area of the intersection part between the cross-sectional shape of the liquid flow channel on the adjusting rod and the shape of the bottom on the fixed base through vertical movement, horizontal rotation or spiral movement along the adjusting rod channel.
Further as an improvement of the technical scheme of the invention, a hollow cavity is arranged in the adjusting rod, the adjusting rod is provided with a liquid outlet channel communicated with the hollow cavity, and the liquid outlet channel and the adjusting rod are integrally manufactured.
The invention further provides an improvement of the technical scheme, a liquid flow channel connected between the liquid outlet of the fixed base and the liquid inlet of the adjusting rod is arranged on the outer wall of the adjusting rod, a hollow cavity is arranged in the adjusting rod, a liquid outlet channel communicated with the hollow cavity is arranged on the adjusting rod, and the liquid outlet channel and the adjusting rod are manufactured integrally.
As further improvement of the technical scheme of the invention, the liquid outlet channel is vertical to the adjusting rod.
As further improvement of the technical scheme of the invention, the liquid outlet of the fixed base and the channel of the adjusting rod are arranged to be the same channel.
As an improvement of the technical scheme of the invention, the adjusting rod is provided with at least one closed ring, and the closed ring protrudes out of the surface of the adjusting rod and is sealed with the adjusting rod channel.
As further improvement of the technical scheme of the invention, the cross section of the closed ring is semicircular or trapezoidal.
The invention further provides an improvement of the technical scheme, wherein the upper surface of the fixed base is provided with a blocking outer ring surrounding the periphery of the adjusting rod channel, a blocking inner ring surrounding the periphery of the adjusting rod and capable of being embedded into the blocking outer ring and clinging to the inner wall of the blocking outer ring is arranged below the auxiliary pressure plate, and a blocking sealing gasket is arranged between the blocking outer ring and the blocking inner ring.
As an improvement of the technical scheme of the invention, an auxiliary pressure plate is arranged at the top end of the adjusting rod, the adjusting rod channel protrudes out of the upper surface of the fixed base, and a return spring is arranged between the auxiliary pressure plate and the fixed base.
The technical scheme of the invention is further improved, an adjusting fixing seat and a moving pressing plate are arranged above the auxiliary pressing plate, one end of the moving pressing plate is arranged above the auxiliary pressing plate, the other end of the moving pressing plate is hinged and fixed on the adjusting fixing seat, a sliding groove is arranged on the adjusting fixing seat, a pulley capable of horizontally moving along the sliding groove is arranged in the sliding groove, the bottom of the pulley is pressed on the moving pressing plate, and the driving pressing plate gradually presses the auxiliary pressing plate in the sliding process of the pulley.
The pulley is further improved by the technical scheme that a limiting wheel which is coaxial with the pulley is fixed on the pulley, a plurality of stop screens are arranged above or below the chute, and the limiting wheel is embedded into the stop screens to fix the pulley in the sliding process of the pulley.
Further as an improvement of the technical scheme of the invention, two ends of the sliding chute are provided with pulley stop positions.
Further as an improvement of the technical scheme of the invention, the adjusting fixing seat is provided with a flow speed scale mark which is arranged along the axial direction of the sliding chute.
The adjusting rod is provided with a limiting stopper which protrudes out of the surface of the fixed base and is arranged at the top of the adjusting wheel, and the length and/or angle of the adjusting rod extending into the adjusting rod channel can be adjusted by rotating the adjusting wheel.
Further as an improvement of the technical scheme of the invention, the adjusting rod is provided with an adjusting wheel in an outward extending manner, the adjusting wheel is provided with an adjusting wheel fixing shaft in an upward extending manner, the bottom of the adjusting rod is tightly attached to the bottom of the adjusting rod channel, the fixing base is provided with a fixer for accommodating the adjusting wheel fixing shaft hole, the adjusting wheel can axially rotate along the adjusting rod channel, and the angle of the adjusting rod in the adjusting rod channel is adjusted by rotating the adjusting wheel.
The invention further provides an improvement of the technical scheme, the top of the adjusting rod is provided with an adjusting wheel, the adjusting rod is connected with the adjusting rod channel through threads, the fixed base is provided with a limiting stopper which protrudes out of the surface of the fixed base and is arranged at the top of the adjusting wheel, and the length and the angle of the adjusting rod extending into the adjusting rod channel are adjusted by rotating the adjusting wheel.
The invention further provides an improvement of the technical scheme, a circle of positioning chassis is arranged on the fixed base, a circle of positioning groove is arranged along the upper surface of the positioning chassis, at least one positioning bulge is arranged below the adjusting wheel, and the adjusting wheel is embedded into the positioning groove through the positioning bulge for positioning.
The invention further improves the technical scheme that a circle of positioning grooves with sequentially changed heights are arranged on the positioning chassis, and the positioning protrusions are embedded into the positioning grooves to position and simultaneously adjust the length of the adjusting rod extending into the liquid flow channel.
Further as an improvement of the technical scheme of the invention, the adjusting rod is connected with the adjusting rod channel through threads.
As a further improvement of the technical scheme of the invention, the adjusting wheel is provided with flow rate scale marks arranged around the adjusting wheel.
As further improvement of the technical scheme of the invention, two sides of the fixed base are provided with the adjusting valve grooves, and the top end of the adjusting rod is connected with a pawl which is coated outside the fixed base and moves close to the groove walls.
As a further improvement of the technical scheme of the invention, the top end of the adjusting rod is provided with an adjusting ring.
As further improvement of the technical scheme of the invention, a plurality of adjusting teeth are arranged on two opposite adjusting valve grooves from top to bottom, and two pawls which are oppositely arranged on the adjusting teeth and are clamped and fixed on two sides of the fixing base are arranged at the top end of the adjusting rod in a downward extending manner and are coated outside the fixing base.
As a further improvement of the technical scheme of the invention, the width of the grooves of the two regulating valves is larger than the width between the two pawls.
As further improvement of the technical scheme of the invention, a locking clamp position is arranged between the fixed base and the adjusting rod.
Further as an improvement of the technical scheme of the invention, the fixed base and the adjusting rod are manufactured integrally, or the fixed base and the adjusting rod are arranged independently.
As further improvement of the technical scheme of the invention, the fixed base and the adjusting rod are connected into a whole through a connecting belt of a bendable piece.
The invention has the beneficial effects that: this infusion flow rate regulator leads liquid through unable adjustment base or unable adjustment base and regulating rod, the cross-sectional area that is used for the flow channel of infusion on the speed governing position is adjusted along the regulating rod passageway motion through the regulating rod, thereby change the infusion velocity of flow among the infusion set, this device realizes that the regulating rod is fixed through the regulating rod passageway in the unable adjustment base, make the velocity of flow set up can better location after accomplishing, the velocity of flow can not take place to drift and operation process is simple, flow rate control is more accurate, accord with current use habit in clinic, multiple application environment, guarantee infusion safety, can be applied to conventional infusion, use at blood products, the vein is nutritious, during high viscosity or high-precipitation degree liquid infusion such as mannitol, more reducible jam chance.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a front view of the internal structure of a first embodiment of the present invention in a full flow condition within a fluid flow passageway;
FIG. 2 is a front view of the internal structure of the flow channel in a fully closed position in accordance with a first embodiment of the present invention;
FIG. 3 is a front view of the fixing base structure according to the first embodiment of the present invention;
FIG. 4 is a schematic view of the external structure of a first embodiment of the present invention with a scale marked thereon;
FIG. 5 is a schematic view showing the overall structure of the chute using parallel rails according to the first embodiment of the present invention;
FIG. 6 is a schematic view of the overall structure of the second embodiment of the present invention after a stop clip is disposed in the chute;
FIG. 7 is a schematic view illustrating a full-flow state of the liquid flow channel when the inside of the regulating rod is a hollow cavity according to the third embodiment of the present invention;
FIG. 8 is a schematic view showing a state in which the liquid flow path is fully closed when the inside of the regulating rod is a hollow chamber according to the third embodiment of the present invention;
FIG. 9 is a schematic structural view of a stationary base when a liquid outlet of the stationary base and a channel of a regulating rod are arranged in the same channel according to a third embodiment of the present invention;
FIG. 10 is a schematic view showing the overall structure of an adjusting rod in a third embodiment of the present invention;
FIG. 11 is a schematic view showing the entire structure of a flow channel in a full flow state according to a fourth embodiment of the present invention;
FIG. 12 is a schematic view of the entire structure of a fourth embodiment of the present invention with the flow passage fully closed;
FIG. 13 is a top view of an adjustment rod construction in accordance with a fourth embodiment of the present invention;
FIG. 14 is a front view of an adjusting rod structure in a fourth embodiment of the present invention;
FIG. 15 is a front view of a fixing base structure in a fourth embodiment of the present invention;
FIG. 16 is a top view of a fourth embodiment of a mounting base structure of the present invention;
FIG. 17 is a top plan view of the overall structure of a fourth embodiment of the present invention with graduations provided;
FIG. 18 is a schematic view showing the entire structure of a fifth embodiment of the present invention in which a liquid flow path is opened;
fig. 19 is an overall configuration diagram of a liquid flow passage in a fully closed state in the fifth embodiment of the present invention;
FIG. 20 is a front view of a fixing base structure in a fifth embodiment of the present invention;
FIG. 21 is a front view of an adjusting rod structure in a fifth embodiment of the present invention;
FIG. 22 is a front elevational view of the overall construction of a sixth embodiment of the invention with the flow passages in full flow communication;
FIG. 23 is a side view of the overall construction of a sixth embodiment of the invention with the flow channels in flow communication;
FIG. 24 is a side view showing the overall construction of the seventh embodiment of the present invention;
FIG. 25 is a side view of the overall structure of the eighth embodiment of the present invention;
FIG. 26 is a front view of a fixing base structure according to a sixth, seventh or eighth embodiment of the present invention;
FIG. 27 is a front elevational view of the overall construction of a sixth, seventh and eighth embodiment of the present invention with the flow passages fully closed;
FIG. 28 is a schematic view showing the overall structure of an adjusting rod and a pawl in an eighth embodiment of the present invention;
FIG. 29 is a schematic view of an embodiment of the present invention prior to being integrally assembled;
FIG. 30 is a schematic view of an integrated assembly process according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 30, the present invention is an infusion flow rate regulator, including a fixed base 1 having a fixed base liquid inlet and a fixed base liquid outlet, and an adjusting rod 2 mounted on the fixed base 1; the adjusting rod 2 is provided with a liquid flow channel 11 connected between the liquid inlet of the fixed base and the liquid outlet of the fixed base; an adjusting rod channel 12 is arranged on the fixed base 1; a movable adjusting rod 2 is arranged in the adjusting rod channel 12, and the adjusting rod 2 and the adjusting rod channel 12 are sealed in a watertight manner; the cross-sectional area of the liquid flow channel 11 for the liquid to pass through is adjusted by adjusting the area of the overlapping part of the shape of the bottom of the fixed base 1 and the cross-sectional shape of the liquid flow channel 11 of the adjusting rod 2.
A transfusion flow velocity regulator comprises a fixed base 1 provided with a fixed base liquid inlet and a fixed base liquid outlet and an adjusting rod 2 arranged on the fixed base 1; the adjusting rod 2 is provided with a liquid flow channel 11 connected between the liquid outlet of the fixed base and the liquid inlet of the adjusting rod; an adjusting rod channel 12 is arranged on the fixed base 1; a movable adjusting rod 2 is arranged in the adjusting rod channel 12, and the adjusting rod 2 and the adjusting rod channel 11 are sealed in a watertight manner; the adjusting rod 2 is provided with an adjusting rod liquid inlet and an adjusting rod liquid outlet which are communicated with the liquid outlet of the fixed base; the cross-sectional area of the liquid flow channel 11 for the liquid to pass through is adjusted by adjusting the area of the overlapping part of the shape of the bottom of the fixed base 1 and the cross-sectional shape of the liquid flow channel 11 of the adjusting rod 2.
This infusion flow rate regulator leads liquid through unable adjustment base 1 or unable adjustment base 1 and regulating rod 2, move along regulating rod passageway 11 through regulating rod 2, the cross-sectional area that is used for the flow channel 11 of infusion in the position of adjusting the speed governing, thereby change the infusion velocity of flow among the infusion set, this device realizes that regulating rod 2 is fixed through the regulating rod passageway in the unable adjustment base, make the velocity of flow set up can better location after accomplishing, the velocity of flow can not take place drift and operation process simple, flow rate control is more accurate, accord with clinical current use habit, multiple application environment, guarantee infusion safety, can be applied to conventional infusion, use in blood products, the vein is nutritious, during the infusion of high viscosity or high-precipitation degree liquid such as mannitol, more reducible jam chance.
As a preferable embodiment of the invention, the fixed base is provided with an adjusting rod channel communicated with the fixed base liquid pipeline. The adjusting rod channel 12 is internally provided with a movable adjusting rod 2.
As a preferred embodiment of the present invention, the conditioning rod channel 12 is disposed perpendicular to the flow channel 11.
In a preferred embodiment of the present invention, at least one of the flow channels 11 is provided.
As a preferred embodiment of the present invention, the flow channel 11 is a groove with a spacing or a groove with a continuously variable cross-sectional area. The cross-section of the groove may be triangular, semi-circular, rectangular, tubular or other shape.
As a preferred embodiment of the present invention, the minimum cross-sectional area of the liquid line on the stationary base 1 is greater than or equal to the maximum cross-sectional area of the liquid flow path 11.
As a preferred embodiment of the invention, the regulating rod 2 performs interception by changing the length and/or angle of the regulating rod channel 12 embedded at the bottom, and the cross section shape of the liquid flow channel 11 on the regulating rod 2 is fitted with the shape of the bottom of the fixed base 1, so that the liquid flow channel 11 can be completely intercepted; when the cross-sectional shape of the liquid flow channel 11 on the adjusting rod 2 is zero in fit with the bottom shape of the fixed base 1, the liquid flow channel 11 can pass through the liquid and has the maximum liquid flow.
As a preferred embodiment of the invention, the adjusting rod 2 is provided with at least one liquid flow channel 11 which is a through hole, and the adjusting rod 2 changes the size of the cross section of the through hole on the adjusting rod 2 and the area of the intersection part between the shapes of the bottom parts on the fixed base 1 through vertical movement to adjust the flow speed.
As a preferred embodiment of the invention, the regulating rod 2 is provided with a liquid flow channel 11 with a continuously variable cross-sectional area, and the regulating rod 2 regulates the flow rate by changing the size of the area of the intersection between the cross-sectional shape of the liquid flow channel 11 on the regulating rod 2 and the shape of the bottom of the fixed base 1 through vertical movement, horizontal rotation or spiral movement along the regulating rod channel 12.
As a preferred embodiment of the present invention, a hollow cavity 22 is arranged in the adjusting rod 2, the adjusting rod 2 is provided with a liquid outlet channel 23 communicated with the hollow cavity 22, and the liquid outlet channel 23 and the adjusting rod 2 are integrally manufactured.
As a preferred embodiment of the present invention, a liquid flow channel connected between the liquid outlet of the fixed base 1 and the liquid inlet of the adjusting rod 2 is arranged on the outer wall of the adjusting rod 2, a hollow cavity 22 with a hollow interior is arranged in the adjusting rod 2, the adjusting rod 2 is provided with a liquid outlet channel 23 communicated with the hollow cavity 22, and the liquid outlet channel 23 and the adjusting rod 2 are integrally manufactured.
As a preferred embodiment of the invention, the liquid outlet channel 23 is perpendicular to the adjusting bar 2.
As a preferred embodiment of the present invention, the stationary base liquid outlet and the regulating rod passage 12 are provided as the same passage.
In a preferred embodiment of the present invention, the adjusting rod 2 is provided with at least one closed ring 24, and the closed ring 24 protrudes from the surface of the adjusting rod 2 to seal with the adjusting rod channel 12.
As a preferred embodiment of the present invention, the closed loop 24 has a semicircular or trapezoidal cross-section.
As a preferred embodiment of the invention, the upper surface of the fixed base 1 is provided with a blocking outer ring 121 surrounding the periphery of the adjusting rod channel 12, a blocking inner ring 122 surrounding the periphery of the adjusting rod 2 and capable of being embedded into the blocking outer ring 121 and clinging to the inner wall of the blocking outer ring 121 is arranged below the auxiliary pressure plate, and a blocking sealing gasket 123 is arranged between the blocking outer ring 121 and the blocking inner ring 122.
In a preferred embodiment of the present invention, an auxiliary pressing plate 3 is provided at the top end of the adjusting rod 2, the adjusting rod passage 12 protrudes from the upper surface of the stationary base 1, and a return spring 31 is provided between the auxiliary pressing plate 3 and the stationary base 1.
As a preferred embodiment of the invention, an adjusting fixed seat 4 and a moving pressing plate 41 are arranged above the auxiliary pressing plate 3, one end of the moving pressing plate 41 is arranged above the auxiliary pressing plate 3, the other end of the moving pressing plate 41 is hinged and fixed on the adjusting fixed seat 4, a sliding groove 42 is arranged on the adjusting fixed seat 4, a pulley 43 capable of horizontally moving along the sliding groove 42 is arranged in the sliding groove 42, the bottom of the pulley 43 is pressed on the moving pressing plate 41, and the driving pressing plate gradually presses the auxiliary pressing plate 3 in the sliding process of the pulley 43.
In a preferred embodiment of the present invention, a limiting wheel is fixed on the pulley 43 and is coaxially disposed with the pulley 43, a plurality of stop detents 44 are disposed above or below the chute 42, and the pulley 43 is fixed by fitting the limiting wheel into the stop detents 44 during the sliding process of the pulley 43.
In a preferred embodiment of the present invention, the slide groove 42 is provided with pulley stoppers 45 at both ends thereof.
In a preferred embodiment of the present invention, the adjusting and fixing seat 4 is provided with a flow rate scale mark arranged along the axial direction of the sliding groove 42.
As a first embodiment of the invention, the minimum cross-sectional area of the liquid pipeline on the fixed base 1 is larger than or equal to the maximum cross-sectional area of the liquid flow channel, the liquid inlet of the fixed base is communicated with the liquid outlet of the fixed base through the liquid flow channel 11 on the regulating rod 2, and the liquid flow channel 11 connected between the liquid outlet of the fixed base and the liquid inlet of the regulating rod is arranged on the regulating rod 2.
The flow channel 11 is provided with at least one, and the flow channel 11 is preferably a groove with interval distribution or a groove with continuously changing cross section area. The cross-section of the groove may be triangular, semi-circular, rectangular, tubular or other shape.
The fixed base 1 is provided with a fixed base liquid inlet and a fixed base liquid outlet which are respectively communicated with the liquid conveying pipeline, and the fixed base liquid inlet and the fixed base liquid outlet are communicated through a liquid flow channel 11 on the adjusting rod 2; or the fixed base 1 is provided with a fixed base liquid inlet communicated with the liquid conveying pipeline and the adjusting rod 2 is provided with an adjusting rod liquid outlet communicated with the liquid conveying pipeline, and the liquid inlet of the adjusting rod is communicated with the liquid outlet of the fixed base through a liquid flow channel 11 on the adjusting rod 2.
Be equipped with the regulation fixing base 4 that inside held the spout 42 on the unable adjustment base 1, adjust fixing base 4's setting and can fix parts such as pulley 43, motion clamp plate 41 well.
In the above-mentioned regulator, the two ends of the sliding groove 42 on the regulating fixing seat 4 are provided with stop screens 44 for limiting the displacement of the pulley 43. The stop position-limiting device 44 is arranged by limiting the excessive displacement of the pulley 43 and matching with the movement pressing plate 41, the maximum displacement of the pulley 43 can be well limited, and the movement pressing plate 41 is matched to limit the auxiliary plate, so that the operation and the control are more convenient, the misoperation is reduced, and the separation of the adjusting rod 2 is avoided.
The liquid conveying regulator is provided with a regulating rod 2 which can change the position and change the cross section area of the liquid flow channel 11 for the liquid to pass through according to different positions. The adjusting rod 2 is preferably provided with various embodiments such as an adjusting rod 2 having an open or semi-open structure or an adjusting rod 2 having a hollow structure.
Regulating rod 2 adopts cylindricly, and regulating rod 2 external diameter is greater than or equal to the internal diameter of regulating rod passageway 12, adds the power slightly during the installation and can impress regulating rod passageway 12, and regulating rod 2 can closely cooperate each other with regulating rod passageway 12 like this, avoids the weeping, and regulating rod 2 also can adopt cuboid or other shapes, and the external diameter of regulating rod 2 is a bit bigger than or equal to regulating rod passageway 12's internal diameter, also can not break regulating rod 2 when simple to operate like this.
The adjusting rod 2 is provided with an outward-bulging closed ring 24, at least one closed ring is a complete closed ring surrounding the adjusting rod 2 and is arranged at the rear part of the adjusting rod 2, and the outer diameter of the closed ring 24 is larger than that of the adjusting rod 2. The closed ring 24 is preferably provided with two or more, and the provision of the closed ring 24 can provide better sealing between the regulating rod 2 and the regulating rod passage 12. The closed loop 24 is preferably semi-circular in cross-section and may be trapezoidal or other shape.
The fixed base 1 is provided with a fixed base liquid inlet and a fixed base liquid outlet which are respectively communicated with the liquid conveying pipeline, and the fixed base liquid inlet and the fixed base liquid outlet are communicated through a liquid flow channel 11 on the adjusting rod 2. The adjusting rod 2 preferably adopts an open or semi-open structure.
The adjusting rod 2 adopts an open or semi-open structure, through holes which are used as liquid flow channels 11 are arranged on the adjusting rod 2, and the through holes are provided with one or are distributed at intervals and have different apertures. When one through hole is formed, the shape of the upper bottom of the fixed base 1 corresponds to that of the through hole in the adjusting rod 2, the corresponding cross sectional area is zero at the minimum, and the maximum cross sectional area is equal to the whole through hole. When the through holes are distributed at intervals and are arranged in different apertures, the through holes in different apertures correspond to the shape of the upper bottom of the fixed base 1, the corresponding cross sectional area is the minimum zero, and the maximum cross sectional area is equal to the cross sectional area of the whole maximum through hole. In particular, the minimum cross-sectional area of the adjacent through holes increases in sequence in one direction, such as from top to bottom, so that the cross-sectional area of the through hole on the adjusting rod 2 and the cross-sectional area corresponding to the shape of the bottom on the fixing base 1 increase or decrease in sequence. When the transfusion flow rate is adjusted, the transfusion flow rate can be sequentially increased or decreased, and the transfusion flow rate is convenient to adjust. The cross-section of the through-hole may be triangular, circular or other shape.
The fixed base 1 is provided with a fixed base liquid inlet communicated with a liquid conveying pipeline, the adjusting rod 2 is provided with an adjusting rod liquid outlet communicated with the liquid conveying pipeline, the adjusting rod 2 is provided with an adjusting rod liquid inlet and an adjusting rod liquid outlet communicated with the fixed base liquid outlet, the adjusting rod liquid inlet and the fixed base liquid outlet are communicated through a liquid flow channel 11 on the adjusting rod 2, the adjusting rod 2 preferably adopts a hollow structure, the wall of the adjusting rod 2 can adopt a complete closed mode, and the tail end of the adjusting rod 2 is provided with an opening; or the outer wall of the adjusting rod 2 is provided with a side wall groove as a liquid pipeline; or the outer wall of the adjusting rod 2 is provided with at least one through hole which is provided with one or arranged in interval distribution and different pore diameters.
The fixing base 1 can also be provided with a fixing base liquid outlet communicated with a liquid conveying pipeline, the adjusting rod 2 is provided with an adjusting rod liquid inlet communicated with the liquid conveying pipeline, the adjusting rod 2 is provided with an adjusting rod liquid inlet and an adjusting rod liquid outlet communicated with the fixing base liquid inlet, the adjusting rod 2 preferably adopts a hollow structure, the fixing base liquid inlet and the adjusting rod liquid outlet are still communicated through a liquid flow channel 11 on the adjusting rod 2, and the connection relation of all the channels can be changed similarly.
The fixed base 1 can be matched with a single groove serving as a liquid flow channel 11 on the adjusting rod 2 to adjust the flow rate of the infusion independently, and can also be matched with two or more grooves serving as the liquid flow channel 11 on the adjusting rod 2 to adjust the flow rate of the infusion together; or more than one liquid pipeline is arranged in the fixed base and is matched with various combinations of one or more than one groove which is used as the liquid flow channel 11 on the adjusting rod 2 to adjust the transfusion flow rate.
When two or more adjusting rods 2 are used, the adjusting rods 2 may have the same structure or different structures. It is even possible to use two or more structural modes of the same structure or different structures on the same regulating rod 2. This makes it possible to adjust the cross-sectional area of the liquid flow path 11 more accurately, and to adjust the flow rate of the liquid feed more accurately.
The adjusting rod 2 extends backwards to form an auxiliary plate for limiting the dislocation of the elastic piece and adjusting the adjusting rod 2 by matching with the movement of the pressing plate 41. The auxiliary plate is preferably rounded at the upper portion to facilitate correspondence with the moving platen 41 at different angles. A return spring 31 for pushing the adjusting rod 2 and the fixed base 1 to separate from each other is arranged between the adjusting rod and the fixed base.
The regulator is provided with a moving pressing plate 41 which is fixed on the fixer at one side of the hinged position of the moving pressing plate 41, corresponds to the auxiliary plate at the lower part and corresponds to the pulley 43 at the upper part and is made of high-friction hard non-deforming materials. The movable platen 41 moves with the fixed shaft of the movable platen 41 as the axis. The arrangement of the moving pressing plate enlarges the adjusting moving distance of the adjusting rod 2, so that the adjustment of the infusion flow velocity is smoother, the speed adjusting performance of the infusion regulator is improved, and the infusion flow velocity drift caused by the non-active sliding of the pulley 43 can be avoided.
The regulator is provided with a movable pulley 43 with an anti-skid groove on the periphery, and the arrangement of the pulley 43 can be convenient for an operator to regulate the transfusion flow rate. The pulley 43 is provided with a pulley shaft, and the pulley shaft is symmetrically arranged on two sides of the pulley 43. The fixer is provided with a sliding groove 42 for the movement of the pulley shaft, and the sliding groove 42 can effectively control the movement track of the pulley shaft. When the chute 42 adopts a single-side or double-side wavy guide rail mode, the discontinuous constant-speed regulation of the flow of the liquid flow channel 11 can be realized. When the chute 42 adopts a parallel guide way, stepless constant speed adjustment of the liquid flow channel 11 can be realized, and the infusion flow rate can be adjusted more easily.
The regulator is provided with a scale panel and a flow rate indicator, the scale panel is fixed on the fixed base 1, the corresponding flow rate indicator and the pulley 43 move synchronously, and the scale panel and the flow rate indicator are matched to indicate the state of the transfusion flow rate and/or the transfusion flow of the reading transfusion device. And a blocking device for preventing internal components such as the adjusting rod 2, the adjusting rod channel 12 and the like from being communicated with the outside is arranged between the adjusting rod 2 and the fixed base 1.
The blocking device is composed of a blocking inner ring 122, a blocking sealing gasket 123 and a blocking outer ring 121. Other barrier structures such as flexible barrier films may also be employed. The adjusting wheel is provided with a circular blocking inner ring 122 surrounding the adjusting rod 2, and the blocking inner ring 122 is preferably coaxial with the adjusting rod 2. Be equipped with separation sealing gasket 123 between separation inner ring 122 and the separation outer ring 121, separation sealing gasket 123 is cyclic annular, places on separation sealing gasket 123 fixed slot of separation outer ring 121, plays sealed effect.
The fixed base 1 is provided with a blocking outer ring 121 which is tightly sleeved with a blocking inner ring 122 and provided with a blocking sealing gasket 123 fixing groove. The blocking outer ring 121 is preferably circular and concentric with the rod channel 12. The blocking device can also adopt a flexible blocking film, one side of the flexible blocking film is fixed on the auxiliary plate, and the other side of the flexible blocking film is fixed on the fixed base 1 and surrounds the adjusting rod 2, the adjusting rod channel 12 and the elastic piece. The cooperation of separation inner ring 122, separation sealing gasket 123 and separation outer ring 121 can effectively separate internal component and external world, and the application of separation device can prevent internal component such as regulating rod 2, regulating rod passageway 12 well from communicating with each other with the external world, keeps internal component such as regulating rod 2 and regulating rod passageway 12 to be in aseptic condition in the regulator use. The use of the blocking means also provides a good maintenance of the position of the regulating rod 2 and the regulating rod channel 12.
As a preferred embodiment of the present invention, the top of the adjusting rod 2 is provided with an adjusting wheel 5, the fixed base 1 is provided with a limit stopper 51 protruding from the surface of the fixed base 1 and placed on the top of the adjusting wheel 5, and the length and/or angle of the adjusting rod extending into the adjusting rod channel 12 is adjusted by rotating the adjusting wheel 5.
In a preferred embodiment of the present invention, the adjusting rod 2 is provided with an adjusting wheel 5 extending outwards, the adjusting wheel 5 is provided with an adjusting wheel fixing shaft 53 extending upwards, the bottom of the adjusting rod 2 is closely attached to the bottom of the adjusting rod channel 12, the fixing base 1 is provided with a fixer 54 for accommodating the adjusting wheel fixing shaft hole, the adjusting wheel 5 can axially rotate along the adjusting rod channel 12, and the angle of the adjusting rod 2 in the adjusting rod channel 12 is adjusted by rotating the adjusting wheel 5.
As a preferred embodiment of the invention, the top of the adjusting rod 2 is provided with an adjusting wheel 5, the adjusting rod 2 is connected with the adjusting rod channel 12 through a screw thread, the fixed base 1 is provided with a limit stopper 51 which protrudes out of the surface of the fixed base 1 and is arranged on the top of the adjusting wheel 5, and the length and the angle of the adjusting rod extending into the adjusting rod channel 12 are adjusted by rotating the adjusting wheel 5.
As a preferred embodiment of the present invention, a circle of positioning chassis 52 is disposed on the fixed base 1, a circle of positioning grooves is disposed along the upper surface of the positioning chassis 52, at least one positioning protrusion is disposed below the adjusting wheel 5, and the adjusting wheel 5 is embedded into the positioning groove through the positioning protrusion for positioning.
As a preferred embodiment of the invention, a circle of positioning grooves with sequentially changed heights are arranged on the positioning chassis 52, and the length and the angle of the adjusting rod 2 extending into the liquid flow channel 11 are adjusted while the positioning protrusions are embedded into the positioning grooves for positioning.
As a preferred embodiment of the invention, a circle of positioning grooves with continuously variable heights are arranged on the positioning chassis 52, and the positioning protrusions are embedded into the positioning grooves with different heights for positioning and simultaneously adjusting the length and the angle of the adjusting rod extending into the liquid flow channel 11.
In a preferred embodiment of the invention, the adjusting rod 2 is screwed into the adjusting rod channel 12.
In a preferred embodiment of the present invention, the regulating wheel 5 is provided with a flow rate scale mark disposed around the regulating wheel 5.
In one embodiment of the present invention, the adjusting rod channel 12 is provided with an internal thread, the adjusting rod 2 is externally provided with an external thread, and the fixing base 1 is provided with a limit stopper 51 for limiting the displacement of the adjusting rod 2. The limit stopper 51 can well limit the maximum displacement of the adjusting rod 2, is convenient to operate and control, reduces misoperation and avoids the adjusting rod 2 from being separated.
The transfusion regulator is provided with a regulating rod 2 which can change the position and change the cross section area of the liquid flow channel 11 for the liquid to pass through along with different positions, a regulating rod 2 which is in an open or semi-open structure, or a regulating rod 2 which is in a hollow structure. The adjusting rod 2 is cylindrical, the outer diameter of the adjusting rod 2 is larger than or equal to the inner diameter of the adjusting rod channel 12, the adjusting rod channel 12 can be pressed in with force slightly during installation, and therefore the adjusting rod and the adjusting rod channel 12 can be matched tightly with each other, and seepage and leakage are avoided. The adjusting rod 2 can also be rectangular or in other shapes. Preferably, the outer diameter of the adjusting rod 2 is slightly larger than or equal to the inner diameter of the adjusting rod channel 12, so that the adjusting rod 2 is not broken while the installation is convenient.
The setting of internal thread on the regulating rod passageway 12 and external screw thread on the regulating rod can conveniently the speed governing, also can make regulating rod 2 closely cooperate each other with regulating rod passageway 12 better, can avoid the weeping, weeping to take place better.
When the adjusting rod 2 adopts an open or semi-open structure, the adjusting rod 2 is provided with through holes as the liquid flow channels 11, and the through holes are provided with one or are distributed at intervals and have different apertures. When one through hole is formed, the shape of the upper bottom of the fixed base 1 corresponds to that of the through hole in the adjusting rod 2, the corresponding cross sectional area is zero at the minimum, and the maximum cross sectional area is equal to the whole through hole. When the through holes are distributed at intervals and are arranged in different apertures, the through holes in different apertures correspond to the shape of the upper bottom of the fixed base 1, the corresponding cross sectional area is the minimum zero, and the maximum cross sectional area is equal to the cross sectional area of the whole maximum through hole. In particular, the minimum cross-sectional area of the adjacent through holes increases in sequence in one direction, such as from top to bottom, so that the cross-sectional area of the through hole on the adjusting rod 2 and the cross-sectional area corresponding to the shape of the bottom on the fixing base 1 increase or decrease in sequence. When the transfusion flow rate is adjusted, the transfusion flow rate can be sequentially increased or decreased, and the transfusion flow rate is convenient to adjust. The cross-section of the through-hole may be triangular, circular or other shape.
When the adjusting rod 2 adopts a hollow structure, the wall of the adjusting rod 2 can adopt a complete sealing mode, and the tail end of the adjusting rod 2 is provided with an opening as a liquid flow channel; or the outer wall of the adjusting rod 2 is provided with a side wall groove as a liquid pipeline; or the outer wall of the adjusting rod 2 is provided with at least one through hole which is provided with one or arranged in interval distribution and different pore diameters. The regulating rod 2 regulates the flow rate by changing the position along the regulating rod channel 12 and changing the size of the area of the intersection between the cross section of the liquid flow channel 11 on the regulating rod 2 and the shape of the bottom on the fixed base 1 along with the change of the position. Preferably, the movement locus of the regulating rod 2 is deviated in one direction, such as increasing in the top-down or clockwise direction, so that the cross-sectional area of the regulating rod 2 with the flow channel 11 is increased or decreased in sequence. When the transfusion flow rate is adjusted, the transfusion flow rate can be sequentially increased or decreased, and the transfusion flow rate is convenient to adjust.
The regulating rod 2 outwards extends out regulating wheel 5, and regulating wheel 5 is whole discoid, and the 5 centre of a circle of regulating wheel is established on regulating rod 2, and regulating rod 2 is as regulating wheel 5's pivot simultaneously, and when adjusting the velocity of flow, regulating wheel 5 uses regulating rod 2 to rotate as the axle center, is relative rotation with unable adjustment base 1. The adjusting wheel 5 extends upwards to form an adjusting wheel fixing shaft, and the fixing base 1 is provided with a fixer for accommodating the adjusting wheel fixing shaft hole. The adjusting wheel 5 can be well fixed by the arrangement of the adjusting wheel fixing shaft and the fixer.
The fixed base 1 extends outwards to form a positioning chassis 52, the adjusting wheel 5 is used as a positioning movable disk, and a positioning device is arranged between the positioning chassis 52 and the positioning movable disk. The positioning device can be a positioning projection and a positioning groove which are matched with each other.
Preferably, the positioning device is a hemispherical protrusion and a hemispherical recess which are matched with each other, the positioning device is a protrusion and a recess with a step-shaped height change which are matched with each other, or the positioning device is a protrusion and a recess with a continuous height change which are matched with each other.
The positioning device preferably has a plurality of sets. The positioning device can indicate whether the speed regulation is in place or not, so that the setting of the flow rate is convenient, and the influence on the infusion process due to the error in the regulation process is avoided. The setting of the positioning device can also ensure that the flow velocity cannot be changed easily after the flow velocity is set, so that the flow velocity can drift. The height of the positioning groove is changed along one direction, for example, the height is increased from top to bottom, so that the cross-sectional area of the circular through hole 21 on the adjusting rod 2 corresponding to the flow channel 11 is increased or decreased. When the flow speed is adjusted, the flow speed can be increased or decreased in sequence, and the flow speed is convenient to adjust.
As the preferred embodiment, the positioning grooves are distributed in a ladder-shaped manner along the circumference, the height of the center point of the concave of the positioning groove is gradually reduced along the clockwise direction, and the adjusting wheel 5 drives the positioning lug to be matched with the corresponding positioning groove when rotating, so that the adjusting rod 2 is driven to make corresponding displacement, and the purpose of setting the flow rate is achieved.
When the positioning groove adopts a recess with a step-shaped height change, the discontinuous constant speed adjustment of the flow of the liquid flow channel 11 can be realized. When the positioning groove adopts a recess with continuously-changed height, stepless constant-speed adjustment of the liquid flow channel 11 can be realized, and the flow speed is easier to adjust.
The regulator is provided with a scale panel and a flow rate indicator, the scale panel is fixed on the fixed base 1, the corresponding flow rate indicator and the regulating wheel 5 synchronously move, and the scale panel and the regulating wheel are matched to indicate the transfusion flow rate and the transfusion flow state of the reading transfusion device. And a blocking device for preventing internal components such as the adjusting rod 2, the adjusting rod channel 12 and the like from being communicated with the outside is arranged between the adjusting rod 2 and the fixed base 1.
As a preferred embodiment of the invention, two sides of the fixed base 1 are provided with adjusting valve grooves, and the top end of the adjusting rod 2 is connected with a pawl 6 which is covered outside the fixed base 1 and moves close to the groove wall.
In a preferred embodiment of the present invention, the adjusting rod 2 is provided at its tip with an adjusting ring 61.
As a preferred embodiment of the invention, a plurality of adjusting teeth 62 are arranged on two opposite adjusting valve grooves from top to bottom, and two pawls 6 which are oppositely arranged on the adjusting teeth 62 which are fixed on two sides and are coated outside the fixed base 1 are extended downwards at the top end of the adjusting rod 2.
As a preferred embodiment of the invention, the width of the two regulating valve recesses is greater than the width between the two pawls 6.
As a preferred embodiment of the invention, a locking clip is arranged between the fixed base 1 and the adjusting rod 2. The maximum displacement of the adjusting rod can be well limited due to the arrangement of the locking clamping position, so that the operation and the control are convenient, and the misoperation is reduced.
In a preferred embodiment of the present invention, the fixing base 1 and the adjusting rod 2 are integrally formed, or the fixing base 1 and the adjusting rod 2 are provided independently of each other.
In a preferred embodiment of the present invention, the fixing base 1 and the adjusting rod 2 are integrally connected by a connecting band 7 of a bendable member.
The integrated manufacturing of the connecting band can reduce the product precision error caused by injection molding under different injection molding conditions, and improve the matching rate of the adjusting rod 2 and the adjusting rod channel 12.
As an embodiment of the invention, the fixed base 1 is provided with the regulating valve grooves, and when the regulating valve grooves are wavy grooves, different regulating valve grooves have different distances from the upper plane of the regulating rod channel 12 on the fixed base 1. The governing valve recess is wavy distribution, and the length of different governing valve recesses is the same, both sides parallel arrangement, and pawl 6 is fixed with the governing valve recess that corresponds respectively. The adjacent regulating valve grooves and the upper plane of the regulating rod channel 12 of the fixed base 1 have different distances which are sequentially increased towards one direction, if the distances are sequentially increased from top to bottom, so that the regulating rods 2 can be sequentially increased or reduced to adjust displacement when the transfusion flow rate is regulated, and the transfusion flow rate is conveniently regulated. The cross-section of the regulating valve groove may be toothed, stepped, wavy or otherwise shaped. The wave-shaped groove of the regulating valve is matched with the regulating rods 2 with different structures, so that the non-continuous constant-speed regulation of the transfusion flow of the liquid flow channel 11 can be realized.
When the regulating valve groove is a groove with an extension plane, the regulating valve groove is preferably rectangular, two sides of the regulating valve groove are symmetrically arranged in parallel, and the pawls 6 are respectively fixed with the corresponding regulating valve grooves. Particularly, the distances between the adjacent regulating valve grooves and the upper plane of the regulating rod channel 12 of the fixed base 1 are different, and the distances are sequentially increased towards one direction, such as from top to bottom, so that when the transfusion flow rate is regulated, the regulating rods 2 can be sequentially increased or reduced to regulate the displacement, and the transfusion flow rate is conveniently regulated. The cross-section of the regulator valve recess may be straight, arcuate, or otherwise shaped. When the groove of the regulating valve is arranged by matching the groove of the extension plane with the regulating rod 2 of the closed structure, the stepless constant-speed regulation of the transfusion flow of the liquid flow channel 11 can be realized, and the transfusion flow rate can be regulated more easily.
The regulating rod 2 is provided with a pawl 6 linked with the regulating rod 2, the fixing base 1 is provided with a regulating valve groove, the regulating rod 2 is provided with the pawl 6, and the regulating rod 2 and the regulating rod are mutually matched to determine the position of the regulating rod 2. The governing valve recess is preferred twice, and pawl 6 is preferred two, and the interval is greater than the interval between two pawls 6 that correspond between the two governing valve recesses, and the governing valve recess is just so changeed to cleaing firmly by pawl 6 to strengthen the fastness of both operations. The two matching positions are preferably combined in more than two groups. The adjustment valve groove and the pawl 6 are matched for use, so that the setting of the infusion flow rate can be facilitated, and the infusion flow rate can not be changed easily after the setting of the infusion flow rate, and the infusion flow rate can drift. The cross-section of the pawl 6 may be "L", rectangular, triangular, semicircular or other shape, and the flow rate regulating valve is provided with an adjusting ring 61 for facilitating the handling and operation of the flow rate regulating valve.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. An infusion flow rate regulator, characterized in that:
the device comprises a fixed base and an adjusting rod, wherein the fixed base is provided with a fixed base liquid inlet and a fixed base liquid outlet;
the adjusting rod is provided with a liquid flow channel connected between the liquid inlet of the fixed base and the liquid outlet of the fixed base;
an adjusting rod channel is arranged on the fixed base;
a movable adjusting rod is arranged in the adjusting rod channel, and the adjusting rod channel are sealed in a watertight manner;
a blocking device is arranged between the adjusting rod and the fixed base;
adjusting the cross-sectional area of the liquid flow channel for liquid to pass through by adjusting the area of the overlapped part of the shape of the upper bottom of the fixed base and the cross-sectional shape of the liquid flow channel on the adjusting rod;
the top end of the adjusting rod is provided with an auxiliary pressing plate, the adjusting rod channel protrudes out of the upper surface of the fixed base, a reset spring is arranged between the auxiliary pressing plate and the fixed base, an adjusting fixed seat and a moving pressing plate are arranged above the auxiliary pressing plate, one end of the moving pressing plate is arranged above the auxiliary pressing plate, the other end of the moving pressing plate is hinged and fixed on the adjusting fixed seat, the adjusting fixed seat is provided with a chute, a pulley capable of horizontally moving along the chute is arranged in the chute, the bottom of the pulley is pressed on the moving pressing plate, the driving pressing plate gradually presses down the auxiliary pressing plate in the sliding process of the pulley, or the adjusting rod is provided with an adjusting wheel extending outwards, the adjusting wheel extends upwards to be provided with an adjusting wheel fixed shaft, the bottom of the adjusting rod is tightly attached to the bottom of the adjusting rod channel, the fixed base is provided with a fixer for accommodating an adjusting wheel fixed shaft hole, the adjusting wheel can axially rotate along the adjusting rod channel, the angle of the adjusting rod in the adjusting rod channel is adjusted by rotating the adjusting wheel, or the top of the adjusting rod is provided with the adjusting wheel, the adjusting rod is connected with the adjusting rod channel through threads, the fixed base is provided with a limiting stopper which protrudes out of the surface of the fixed base and is arranged at the top of the adjusting wheel, the length and the angle of the adjusting rod which extends into the adjusting rod channel are adjusted by rotating the adjusting wheel, or the two sides of the fixed base are provided with adjusting valve grooves, the top end of the adjusting rod is provided with an adjusting ring, and the top end of the adjusting rod extends downwards and is provided with a pawl which is coated outside the fixed base and moves close to the groove wall;
the regulating rod is used for intercepting by changing the length and/or the angle of the regulating rod channel embedded into the bottom, and the section shape of the liquid flow channel on the regulating rod is fitted with the shape of the bottom on the fixed base, so that the liquid flow channel can be completely intercepted.
2. An infusion flow rate regulator, characterized in that:
the device comprises a fixed base and an adjusting rod, wherein the fixed base is provided with a fixed base liquid inlet and a fixed base liquid outlet;
the adjusting rod is provided with a liquid flow channel connected between the liquid outlet of the fixed base and the liquid inlet of the adjusting rod;
an adjusting rod channel is arranged on the fixed base;
a movable adjusting rod is arranged in the adjusting rod channel, and the adjusting rod channel are sealed in a watertight manner;
a blocking device is arranged between the adjusting rod and the fixed base;
the adjusting rod is provided with an adjusting rod liquid inlet and an adjusting rod liquid outlet which are communicated with the fixed base liquid outlet;
adjusting the cross-sectional area of the liquid flow channel for liquid to pass through by adjusting the area of the overlapped part of the shape of the upper bottom of the fixed base and the cross-sectional shape of the liquid flow channel on the adjusting rod;
the top end of the adjusting rod is provided with an auxiliary pressing plate, the adjusting rod channel protrudes out of the upper surface of the fixed base, a reset spring is arranged between the auxiliary pressing plate and the fixed base, an adjusting fixed seat and a moving pressing plate are arranged above the auxiliary pressing plate, one end of the moving pressing plate is arranged above the auxiliary pressing plate, the other end of the moving pressing plate is hinged and fixed on the adjusting fixed seat, the adjusting fixed seat is provided with a chute, a pulley capable of horizontally moving along the chute is arranged in the chute, the bottom of the pulley is pressed on the moving pressing plate, the driving pressing plate gradually presses down the auxiliary pressing plate in the sliding process of the pulley, or the adjusting rod is provided with an adjusting wheel extending outwards, the adjusting wheel extends upwards to be provided with an adjusting wheel fixed shaft, the bottom of the adjusting rod is tightly attached to the bottom of the adjusting rod channel, the fixed base is provided with a fixer for accommodating an adjusting wheel fixed shaft hole, the adjusting wheel can axially rotate along the adjusting rod channel, the angle of the adjusting rod in the adjusting rod channel is adjusted by rotating the adjusting wheel, or the top of the adjusting rod is provided with the adjusting wheel, the adjusting rod is connected with the adjusting rod channel through threads, the fixed base is provided with a limiting stopper which protrudes out of the surface of the fixed base and is arranged at the top of the adjusting wheel, the length and the angle of the adjusting rod which extends into the adjusting rod channel are adjusted by rotating the adjusting wheel, or the two sides of the fixed base are provided with adjusting valve grooves, the top end of the adjusting rod is provided with an adjusting ring, and the top end of the adjusting rod extends downwards and is provided with a pawl which is coated outside the fixed base and moves close to the groove wall;
the regulating rod is used for intercepting by changing the length and/or the angle of the regulating rod channel embedded into the bottom, and the section shape of the liquid flow channel on the regulating rod is fitted with the shape of the bottom on the fixed base, so that the liquid flow channel can be completely intercepted.
3. The infusion flow rate regulator according to claim 1 or 2, characterized in that: the liquid flow channel is a groove distributed at intervals or a groove with continuously changed cross section area.
4. The infusion flow rate regulator according to claim 1 or 2, characterized in that: the adjusting rod is provided with at least one through hole, and the adjusting rod changes the size of the area of the intersection part between the cross section of the through hole in the adjusting rod and the shape of the bottom of the fixing base through vertical movement to adjust the flow velocity.
5. The infusion flow rate regulator according to claim 1 or 2, characterized in that: the regulating rod is provided with a liquid flow channel with continuously changed cross section area, and the regulating rod changes the size of the area of the intersection part between the cross section shape of the liquid flow channel on the regulating rod and the shape of the bottom on the fixed base by vertical movement, horizontal rotation or spiral movement along the regulating rod channel to regulate the flow rate.
6. The infusion flow rate regulator according to claim 2, wherein: the liquid outlet device is characterized in that a liquid flow channel connected between the liquid outlet of the fixed base and the liquid inlet of the adjusting rod is arranged on the outer wall of the adjusting rod, a hollow cavity is arranged in the adjusting rod, a liquid outlet channel communicated with the hollow cavity is arranged on the adjusting rod, and the liquid outlet channel and the adjusting rod are integrally manufactured.
7. The infusion flow rate regulator according to claim 1 or 2, characterized in that: and the adjusting wheel is provided with flow speed scale marks arranged around the adjusting wheel.
8. The infusion flow rate regulator according to claim 1 or 2, characterized in that: the fixed base and the adjusting rod are manufactured integrally, or the fixed base and the adjusting rod are arranged independently.
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014107970969 | 2014-12-22 | ||
| CN201410797096 | 2014-12-22 | ||
| CN201410832344 | 2014-12-29 | ||
| CN2014108323449 | 2014-12-29 | ||
| CN201510086011 | 2015-02-24 | ||
| CN2015100860110 | 2015-02-24 | ||
| CN2015102161017 | 2015-05-01 | ||
| CN201510216101 | 2015-05-01 | ||
| CN201510296435X | 2015-06-03 | ||
| CN201510296435 | 2015-06-03 | ||
| CN201510914848X | 2015-12-13 | ||
| CN201510914848 | 2015-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105641779A CN105641779A (en) | 2016-06-08 |
| CN105641779B true CN105641779B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521069357.1U Expired - Fee Related CN205339738U (en) | 2014-12-22 | 2015-12-21 | Flow velocity adjustor for transfusion |
| CN201510961834.3A Active CN105641779B (en) | 2014-12-22 | 2015-12-21 | Infusion flow speed regulator |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521069357.1U Expired - Fee Related CN205339738U (en) | 2014-12-22 | 2015-12-21 | Flow velocity adjustor for transfusion |
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| Country | Link |
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| CN (2) | CN205339738U (en) |
| WO (1) | WO2016101858A1 (en) |
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| CN205339738U (en) * | 2014-12-22 | 2016-06-29 | 胡绍勤 | Flow velocity adjustor for transfusion |
| CN107308521B (en) * | 2017-08-16 | 2020-04-14 | 韩晓丽 | Liquid flow rate adjusting device for nursing |
| CN110179557A (en) * | 2018-12-18 | 2019-08-30 | 贝思德迩医疗器材(广州)有限公司 | A kind of dental high-speed cell phone of adjustable main working gas flow |
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| CN205434574U (en) * | 2014-12-22 | 2016-08-10 | 胡绍勤 | Flow velocity adjustor for transfusion |
| CN205339738U (en) * | 2014-12-22 | 2016-06-29 | 胡绍勤 | Flow velocity adjustor for transfusion |
-
2015
- 2015-12-21 CN CN201521069357.1U patent/CN205339738U/en not_active Expired - Fee Related
- 2015-12-21 CN CN201510961834.3A patent/CN105641779B/en active Active
- 2015-12-21 WO PCT/CN2015/098144 patent/WO2016101858A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN205339738U (en) | 2016-06-29 |
| CN105641779A (en) | 2016-06-08 |
| WO2016101858A1 (en) | 2016-06-30 |
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