CN217761221U - Continuous injection pump - Google Patents
Continuous injection pump Download PDFInfo
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- CN217761221U CN217761221U CN202221753177.5U CN202221753177U CN217761221U CN 217761221 U CN217761221 U CN 217761221U CN 202221753177 U CN202221753177 U CN 202221753177U CN 217761221 U CN217761221 U CN 217761221U
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Abstract
The utility model relates to the technical field of injection pumps, in particular to a continuous injection pump, which comprises an injection assembly, a piston assembly, a driving assembly and a switching assembly; the driving assembly is connected with the injection assembly through the piston assembly and is used for driving the piston assembly to move; the injection assembly is at least one group, and comprises a first injection tube and a second injection tube which are connected in parallel; the quantity of switching subassembly is the same with injection assembly's quantity, and the switching subassembly is used for switching first feed inlet and first discharge gate respectively with the first injection section of thick bamboo between the intercommunication to and switch second feed inlet and second discharge gate respectively with the second injection section of thick bamboo between the intercommunication. The utility model discloses eliminate pulse and return liquid phenomenon, realize not having the spaced material of inhaling and defeated material.
Description
Technical Field
The utility model relates to an injection pump technical field especially relates to a continuous injection pump.
Background
The syringe pump that uses in the existing market, it is by the pump body, pump head, piston, check valve constitution basically, when using, through the reciprocating motion of pump head, form vacuum or pressure in the pump body, control the switch of check valve, accomplish fluid transport. In the infusion mode, pressure and vacuum are generated in the pump body in a circulating mode in the working process, the one-way valve is switched on and off by means of pressure change in the pump body, and a hysteresis effect exists, so that pulses and liquid return during liquid conveying are formed, flow and flow speed are unstable, air or other foreign matters are easy to suck in when the flow and flow speed are serious, and air resistance or blockage is formed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a continuous injection pump eliminates pulse and liquid return phenomenon, realizes not having the spaced material of inhaling and defeated material.
To achieve the purpose, the utility model adopts the following technical proposal:
a continuous infusion pump comprising an infusion assembly, a piston assembly, a drive assembly and a switching assembly;
the driving assembly is connected with the injection assembly through the piston assembly and is used for driving the piston assembly to move;
the injection assembly is at least one group, the injection assembly comprises a first injection cylinder and a second injection cylinder, the first injection cylinder and the second injection cylinder are connected in parallel, and the driving assembly is respectively connected with the first injection cylinder and the second injection cylinder through the piston assembly;
the switching assembly comprises a first switching valve and a second switching valve;
the first injection tube is provided with a first feeding hole and a first discharging hole, the second injection tube is provided with a second feeding hole and a second discharging hole, the first feeding hole is communicated with the second feeding hole through a first pipeline, and the first discharging hole is communicated with the second discharging hole through a second pipeline;
the first switching valve is respectively connected with the first feeding hole and the first discharging hole and is used for switching the communication between the first feeding hole and the first discharging hole and the first injection tube;
the second switching valve with the second feed inlet with the second discharge gate is connected, the second switching valve is used for switching the second feed inlet with the second discharge gate respectively with the intercommunication between the second injection tube.
Preferably, the piston assembly comprises a first piston head, a second piston head and a piston rod, two ends of the piston rod are respectively connected with the first piston head and the second piston head, the first piston head is positioned in the first injection tube, and the second piston head is positioned in the second injection tube;
the drive assembly comprises a stepping motor, a transmission screw rod, a transmission sliding block and a transmission rod, the drive end of the stepping motor is in transmission connection with the transmission screw rod, the transmission sliding block moves in the transmission screw rod, two ends of the transmission rod are respectively connected with the transmission sliding block and the piston rod, and the stepping motor is used for synchronously driving the transmission screw rod, the transmission sliding block and the piston rod.
Preferably, the number of the injection assemblies is one group, the number of the piston assemblies is two groups, the number of the transmission sliding blocks is two, and one piston assembly corresponds to one transmission sliding block.
Preferably, the number of the injection assemblies is two, the number of the piston assemblies is two, the number of the transmission sliding blocks is one, and the two piston assemblies are connected with the transmission sliding blocks together.
Preferably, the number of injection assemblies is three or more.
One of the above technical solutions has the following beneficial effects:
(1) The utility model discloses well injection subassembly is a set of at least, and every group injection subassembly is by the parallelly connected component mode of two injection tubes for when realizing that an at least injection tube adds the medicine, at least another injection tube inhales the liquid medicine, has eliminated the pulse effect that single injection tube arouses, with realizing no spaced medicine that adds, obtains stable feed liquid outflow rate.
(2) The utility model discloses a drive assembly can realize long-time continuous infusion, and feeding and the ejection of compact are switched to rethread switching module, guarantee infusion constant voltage, constant current, no breakpoint between, and work efficiency is high, and is accurate to the control of infusion volume.
Drawings
FIG. 1 is a schematic view of a continuous syringe pump according to one embodiment of the present invention;
FIG. 2 is a schematic structural view of one embodiment of the continuous infusion pump of the present invention;
FIG. 3 is a schematic structural view of one embodiment of the continuous infusion pump of the present invention;
FIG. 4 is a schematic structural view of one embodiment of the continuous infusion pump of the present invention;
in the drawings: the injection device comprises an injection assembly 1, a piston assembly 2, a driving assembly 3, a switching assembly 4, a first injection tube 11, a second injection tube 12, a first piston head 21, a piston rod 22, a second piston head 23, a stepping motor 31, a transmission screw rod 32, a transmission slide block 33, a transmission rod 34, a first switching valve 41, a second switching valve 42, a first feeding hole A1, a first discharging hole A2, a second feeding hole B1, a second discharging hole B2, a first pipeline C1 and a second pipeline C2.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, a continuous infusion pump includes an infusion assembly 1, a piston assembly 2, a drive assembly 3, and a switching assembly 4;
the driving assembly 3 is connected with the injection assembly 1 through the piston assembly 2, and the driving assembly 3 is used for driving the piston assembly 2 to move;
the injection components 1 are at least one group, the injection components 1 comprise a first injection tube 11 and a second injection tube 12, the first injection tube 11 and the second injection tube 12 are connected in parallel, and the driving component 3 is respectively connected with the first injection tube 11 and the second injection tube 12 through the piston component 2;
the switching assembly 4 comprises a first switching valve 41 and a second switching valve 42;
the first injection tube 11 is provided with a first feeding hole A1 and a first discharging hole A2, the second injection tube 12 is provided with a second feeding hole B1 and a second discharging hole B2, the first feeding hole A1 is communicated with the second feeding hole B1 through a first pipeline C1, and the first discharging hole A2 is communicated with the second discharging hole B2 through a second pipeline C2;
the first switching valve 41 is respectively connected with the first feed port A1 and the first discharge port A2, and the first switching valve 41 is used for switching the communication between the first feed port A1 and the first discharge port A2 and the first injection tube 11;
the second switching valve 42 is connected to the second feed port B1 and the second discharge port B2, and the second switching valve 42 is configured to switch the communication between the second feed port B1 and the second discharge port B2 and the second syringe 12, respectively.
The utility model discloses well injection subassembly 1 is a set of at least, and every group injection subassembly 1 is by the parallelly connected component mode of two injection tubes for when realizing that an at least injection tube adds the medicine, at least another injection tube inhales the liquid medicine, has eliminated the pulse effect that single injection tube arouses, with realizing no spaced medicine that adds, obtains stable feed liquid outflow rate.
The utility model discloses a long-time continuous infusion can be realized to drive assembly 3, and feeding and the ejection of compact are switched to rethread switching assembly 4, guarantee infusion constant voltage, constant current, breakpoint between nothing, and work efficiency is high, and is accurate to the control of infusion volume.
In a further description, the piston assembly 2 includes a first piston head 21, a second piston head 23 and a piston rod 22, both ends of the piston rod 22 are respectively connected with the first piston head 21 and the second piston head 23, the first piston head 21 is located in the first syringe 11, and the second piston head 23 is located in the second syringe 12;
the driving assembly 3 comprises a stepping motor 31, a transmission screw rod 32, a transmission slide block 33 and a transmission rod 34, the driving end of the stepping motor 31 is in transmission connection with the transmission screw rod 32, the transmission slide block 33 is movable in the transmission screw rod 32, two ends of the transmission rod 34 are respectively connected with the transmission slide block 33 and the piston rod 22, and the stepping motor 31 is used for synchronously driving the transmission screw rod 32, the transmission slide block 33 and the piston rod 22.
When the injection device works specifically, the stepping motor 31 rotates to operate to drive the transmission screw rod 32 to change the rotation motion into linear motion, so that the transmission slide block 33 moves on the transmission screw rod 32, and then the transmission rod 34 is driven to push the piston assembly 2 to perform injection feeding and discharging switching of the two injection tubes, and high-precision, stable and pulsation-free liquid transmission is realized. Meanwhile, the structure design is reasonable, the use is convenient, and the production and the manufacture are easy.
To be further described, the number of the injection assemblies 1 is one, the number of the piston assemblies 2 is two, the number of the transmission sliders 33 is two, and one piston assembly 2 corresponds to one transmission slider 33, as shown in fig. 3.
In a further description, the number of the injection assemblies 1 is two, the number of the piston assemblies 2 is two, the number of the transmission slide blocks 33 is one, and the two piston assemblies 2 are connected to the transmission slide blocks 33 together, as shown in fig. 4.
More specifically, the number of the injection assemblies 1 is three or more. According to the actual production demand, the utility model provides a multiple embodiment is with the selection.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (5)
1. A continuous infusion pump comprising an infusion assembly, a piston assembly, a drive assembly and a switching assembly;
the driving assembly is connected with the injection assembly through the piston assembly and is used for driving the piston assembly to move;
the injection assembly is at least one group and comprises a first injection tube and a second injection tube which are connected in parallel, and the driving assembly is respectively connected with the first injection tube and the second injection tube through the piston assembly;
the switching assembly comprises a first switching valve and a second switching valve;
the first injection tube is provided with a first feeding hole and a first discharging hole, the second injection tube is provided with a second feeding hole and a second discharging hole, the first feeding hole is communicated with the second feeding hole through a first pipeline, and the first discharging hole is communicated with the second discharging hole through a second pipeline;
the first switching valve is respectively connected with the first feeding hole and the first discharging hole and is used for switching the communication between the first feeding hole and the first discharging hole and the first injection tube;
the second switching valve is connected with the second feeding hole and the second discharging hole, and the second switching valve is used for switching the communication between the second feeding hole and the second discharging hole and the second injection cylinder respectively.
2. A continuous injection pump as claimed in claim 1, wherein the piston assembly comprises a first piston head, a second piston head and a piston rod, the two ends of the piston rod are connected with the first piston head and the second piston head respectively, the first piston head is located in the first syringe, and the second piston head is located in the second syringe;
the drive assembly comprises a stepping motor, a transmission screw rod, a transmission sliding block and a transmission rod, the drive end of the stepping motor is in transmission connection with the transmission screw rod, the transmission sliding block moves in the transmission screw rod, two ends of the transmission rod are respectively connected with the transmission sliding block and the piston rod, and the stepping motor is used for synchronously driving the transmission screw rod, the transmission sliding block and the piston rod.
3. A continuous infusion pump according to claim 2, wherein the number of said infusion assemblies is one, the number of said piston assemblies is two, the number of said drive blocks is two, and one said piston assembly corresponds to one said drive block.
4. A continuous infusion pump according to claim 2, wherein the number of said infusion assemblies is two, the number of said piston assemblies is two, the number of said drive blocks is one, and said drive blocks are connected to both said sets of piston assemblies.
5. A continuous infusion pump as claimed in claim 2, wherein the number of infusion assemblies is three and greater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221753177.5U CN217761221U (en) | 2022-07-08 | 2022-07-08 | Continuous injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221753177.5U CN217761221U (en) | 2022-07-08 | 2022-07-08 | Continuous injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217761221U true CN217761221U (en) | 2022-11-08 |
Family
ID=83871989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221753177.5U Active CN217761221U (en) | 2022-07-08 | 2022-07-08 | Continuous injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217761221U (en) |
-
2022
- 2022-07-08 CN CN202221753177.5U patent/CN217761221U/en active Active
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