Injection pump

Abstract

The utility model relates to the technical field of injection devices, and discloses an injection pump which comprises a driving assembly and a plurality of injectors, each injector is provided with a power end and an injection end, the power end of each injector is connected to the output end of the driving assembly, and the injection end of each injector is provided with a valve; each valve comprises a main flow path and a plurality of branch flow paths, a detection component is arranged on each valve, and each detection component is configured to detect the pressure or flow in the main flow path of the corresponding valve. According to the injection pump, the multiple injectors and the valves in one-to-one correspondence with the injectors are arranged, so that the injection pump can transfer multiple kinds of fluid at a time, and the application range of the injection pump in use is effectively expanded. Meanwhile, the detection component for detecting pressure or flow is integrated on the valve, so that compared with the mode that sensors are arranged at outlets of all flow paths of the valve in the prior art, the volume of the whole injection pump can be effectively controlled, and the manufacturing and using cost of the injection pump can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of injection devices, and more particularly, to an injection pump. Background Art

[0002] The content of this part only provides background information related to the present application, which may not constitute prior art.

[0003] For injection pump products integrated with valves, generally a syringe is used as the power source and a valve (such as a rotary cutting valve) is used as the fluid transfer component. In actual application, by controlling the switching of the valve flow path, the transfer of fluid can be achieved in cooperation with the syringe.

[0004] However, the known injection pumps integrated with valves generally adopt a one-to-one correspondence between the syringe, the valve, and the drive component that provides power for the syringe as the overall structure of the injection pump. For such injection pumps, a single injection pump can only transfer one fluid at a time, so that such injection pumps are not suitable for application scenarios that require simultaneous transfer of multiple fluids.

[0005] Meanwhile, in order to ensure the pressure stability of the fluid flowing in the flow path of the valve, generally, it is also necessary to monitor the pressure or flow rate of the fluid flowing in each flow path of the valve. The commonly used method for the known injection pumps integrated with valves is to add pressure or flow sensors at the outlets of each flow path of the valve to monitor the pressure fluctuations or flow rate changes in each flow path. For such a method of monitoring the pressure or flow rate in each flow path of the valve, there are at least the following problems: 1. It is necessary to add additional pipelines in each flow path to connect the sensors, which increases the positions with sealing requirements, and the pipelines are lengthened, and the volume of the cavities in the pipelines also becomes larger. For an application environment that requires precise quantification, the increase in the volume of the cavities will affect the injection accuracy; 2. It requires additional sensor installation space, which is not very suitable for products with relatively high requirements for the overall machine volume, and since sensors need to be equipped for each flow path of the valve, the cost is relatively high. Summary of the Utility Model

[0006] In view of this, the purpose of the present application is to provide an injection pump. The injection pump disclosed in the present application can achieve the transfer of multiple fluids at a time, and by directly integrating the sensor for detecting pressure or flow rate on the valve, the installation space of the sensor can be effectively saved and the cost can be reduced.

[0007] The purpose of the present application is achieved through the following technical solutions:

[0008] The present application discloses an injection pump, comprising:

[0009] A drive component for outputting a reciprocating linear motion along a first direction;

[0010] Multiple syringes, each of which has a power end and an injection end opposite to each other in the first direction. The power end of each syringe is connected to the output end of the driving assembly, and a valve is provided at the injection end of each syringe;

[0011] The valve includes a main flow path and a plurality of branch flow paths. The main flow path is configured to selectively communicate with different branch flow paths, and the main flow path of each valve communicates with the injection end of the corresponding syringe;

[0012] A detection component is provided on the valve, and the detection component is configured to detect the pressure or flow rate in the main flow path of the corresponding valve.

[0013] In some possible embodiments, the detection component is further configured to output a detection signal including the pressure or flow rate information in the main flow path;

[0014] It further includes a control component communicatively connected to the detection component. The control component is configured to receive the detection signal output by the detection component and control each valve based on the detection signal.

[0015] In some possible embodiments, the driving assembly includes:

[0016] A housing;

[0017] A driving mechanism housed in the housing; the driving mechanism is configured to output the reciprocating linear motion;

[0018] A push plate connected to the output end of the driving mechanism and located outside the housing; the power end of each syringe is connected to the push plate.

[0019] In some possible embodiments, a reset component is provided on the outer wall of the housing, and the reset component is configured to selectively output a reset signal so that the push plate can move to a reset position away from the injection end of each syringe based on the reset signal.

[0020] In some possible embodiments, each syringe includes a syringe barrel and a piston disposed in the syringe barrel. One end of the syringe barrel serves as the injection end of the syringe, and one end of the piston extends out of the syringe barrel through the other end of the syringe barrel. The end of the piston extending out of the syringe barrel serves as the power end of the syringe;

[0021] Connection structures corresponding to each syringe one by one are provided on the push plate;

[0022] The connection structure includes a plugging slot and a locking member. The plugging slot is adapted to receive one end of the injection piston extending outside the injection cylinder. The locking member is configured to lock or unlock the injection piston located in the plugging slot.

[0023] In some possible embodiments, an indicating component is further provided on the outer wall of the housing. The indicating component is configured to output an indication signal to indicate the operating state of the injection pump.

[0024] The technical solution of the embodiment of the present application has at least the following advantages and beneficial effects:

[0025] The injection pump disclosed in the present application is provided with a plurality of syringes and valves corresponding to the syringes one by one, so that the injection pump can transfer multiple fluids at a time, effectively expanding the applicable range of the injection pump during use. At the same time, by integrating the detection component for detecting pressure or flow rate on the valve, compared with the way of arranging sensors at the outlets of each flow path of the valve in the prior art, the volume of the entire injection pump can be effectively controlled, and it helps to reduce the manufacturing and use costs of the injection pump. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of an injection pump provided by an embodiment of the present application;

[0027] Figure 2 It is a schematic structural diagram of a driving component provided by an embodiment of the present application;

[0028] Figure 3 It is a schematic structural diagram of a syringe provided by an embodiment of the present application;

[0029] Figure 4 It is a cross-sectional view of a valve provided by an embodiment of the present application;

[0030] Figure 5 is Figure 2 an enlarged view of the partial structure at A in

[0031] Reference numerals: 10 - driving component, 11 - housing, 12 - push plate, 20 - syringe, 21 - power end, 22 - injection end, 23 - injection cylinder, 24 - injection piston, 25 - locking hole, 30 - valve, 31 - main flow path, 32 - branch flow path, 40 - detection component, 50 - reset component, 60 - indicating component, 70 - connection structure, 71 - plugging slot, 72 - locking member. Detailed Embodiments

[0032] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0033] Compared with the embodiments shown in the drawings, the feasible embodiments within the scope of protection of the present application may have fewer components, have other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0034] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present application pertains. The "first", "second" and similar terms used in the specification and claims of the present application do not denote any order, quantity or importance, but are only used to distinguish different components.

[0035] As Figure 1 shown, the syringe pump disclosed according to the embodiments of the present application may include a driving assembly 10 and a plurality of syringes 20.

[0036] In the embodiments of the present application, the driving assembly 10 is used to output a reciprocating linear motion along a first direction. Among them, the first direction mentioned in the embodiments of the present application may be Figure 1 the z-axis direction shown in

[0037] Combined with Figure 2 the content shown, the driving assembly 10 may include a housing 11, a driving mechanism (not shown in the figure), and a push plate 12 located outside the housing 11. Among them, the housing 11 can provide a receiving cavity suitable for receiving the driving mechanism, and the driving mechanism is received in the housing 11, specifically in the receiving cavity, to provide protection for the driving mechanism through the housing 11. The driving mechanism is used to output a reciprocating linear motion along the first direction, and the push plate 12 is connected to the output end of the driving mechanism. In this way, the push plate 12 can be driven by the driving mechanism to perform a reciprocating linear motion along the first direction. At this time, the push plate 12 can be understood as the output end of the driving assembly 10.

[0038] It can be understood that the drive mechanism in the embodiments of the present application may adopt the same structure as the drive mechanisms used in such injection pumps known in the prior art. For example, the drive mechanism may adopt the same or similar structure as that disclosed in the patent document with the application number "CN2020112988027" previously applied by the applicant. Since the change in the structure of the drive mechanism does not affect the implementation of the embodiments of the present application, the specific structure of the drive mechanism will not be elaborated herein.

[0039] A plurality of syringes 20 are arranged in sequence in a predetermined arrangement manner within a reference plane perpendicular to the first direction (in this embodiment, it can be understood as the "horizontal plane"). Among them, the predetermined arrangement manner can be a rectangular array arrangement, a circular array arrangement, or a linear arrangement. By way of example, the drawings of the present application show a plurality of syringes 20 arranged linearly along the x-axis direction to enhance the aesthetics of the injection pump.

[0040] At the same time, in combination with Figure 1 and Figure 3 As shown in the content, each syringe 20 may have a substantially identical structure. Each syringe 20 has a power end 21 and an injection end 22 that are opposite in the first direction. Among them, the power end 21 of the syringe 20 is used to input the power for the syringe 20 to perform the fluid suction and discharge operation, and the injection end 22 of the syringe 20 is used to suck or discharge fluid when power is input to the power end 21. In the embodiments of the present application, the power ends 21 of each syringe 20 are all connected to the output end of the drive assembly 10. Specifically, the power ends 21 of each syringe 20 are all connected to the push plate 12 of the drive assembly 10, so as to input the power to the power ends 21 of each syringe 20 simultaneously through the push plate 12 that reciprocates linearly in the first direction, so that the injection ends 22 of each syringe 20 can perform the fluid suction and discharge operation simultaneously.

[0041] Furthermore, each syringe 20 may include a syringe barrel 23 and a syringe piston 24 disposed within the syringe barrel 23. For a single syringe 20, one end of the syringe barrel 23 serves as the injection end 22 of the syringe 20, and one end of the syringe piston 24 extends out of the syringe barrel 23 through the other end of the syringe barrel 23. The end of the syringe piston 24 extending out of the syringe barrel 23 serves as the power end 21 of the syringe 20 and is connected to the push plate 12.

[0042] Thus, when the push plate 12 reciprocates linearly along the first direction under the drive of the drive mechanism, the push plate 12 can simultaneously provide power to the power ends 21 of the syringes 20 to guide the injection pistons 24 of the syringes 20 to reciprocate along the first direction within their respective injection barrels 23, so that the injection ends 22 of the syringes 20 can simultaneously inhale or discharge fluid. It can be understood that by providing a plurality of syringes 20, the injection pump disclosed in the embodiment of the present application can utilize a plurality of syringes 20 to inhale or discharge a variety of different fluids respectively at one time, so as to realize the transfer of a variety of fluids at one time and expand the application range of the injection pump.

[0043] On this basis, in order to reasonably control the inhalation or discharge of fluid by each syringe 20, a valve 30 is provided at the power end 21 of each syringe 20. Further, for a single valve 30, as Figure 4 shown, the valve 30 may include a main flow path 31 and a plurality of branch flow paths 32. Among them, the main flow path 31 is configured to selectively communicate with different branch flow paths 32 to realize the switching of the flow path. And, the main flow path 31 of each valve 30 communicates with the injection end 22 of the corresponding syringe 20. Further, referring to Figure 1 shown, the valves 30 on each syringe 20 can be integrated into one body to further optimize the structural design of the injection pump.

[0044] Thus, when using the injection pump, for a single syringe 20 and the valve 30 thereon, first make one of the branch flow paths 32 of the valve 30 communicate with its main flow path 31, and then the push plate 12 moves linearly along the first direction so that the syringe 20 performs the operation of inhaling fluid. At this time, the external fluid can enter the main flow path 31 through the branch flow path 32 communicating with the main flow path 31. After the operation of inhaling fluid is completed, the valve 30 switches the flow path so that another branch flow path 32 communicates with the main flow path 31, and then the push plate 12 moves linearly in the reverse direction along the first direction, so that the syringe 20 can perform the operation of discharging fluid, so that the fluid can be discharged from the branch flow path 32 communicating with the main flow path 31.

[0045] For example, the valve 30 can be a rotary cut-off valve or a multi-way solenoid valve known in the prior art that can automatically switch the flow path under the control of components such as a controller.

[0046] Further, in order to monitor the pressure or flow rate of the fluid flowing in each flow path of the valve 30, a detection component 40 is provided on each valve 30. The detection component 40 is configured to detect the pressure or flow rate in the main flow path 31 of the corresponding valve 30. For example, the detection component 40 can be a pressure sensor capable of detecting pressure or a flow sensor capable of detecting flow rate.

[0047] It can be understood that by directly integrating the detection component 40 on the valve 30 to detect the pressure or flow rate in the main flow path 31, compared with the method of arranging sensors at the outlets of the flow paths of the valve 30, the volume of the entire syringe pump can be effectively controlled, and it helps to reduce the manufacturing and use costs of the syringe pump.

[0048] Furthermore, the detection component 40 is further configured to output a detection signal including the pressure or flow rate information in the main flow path 31. That is to say, after detecting the pressure or flow rate in the main flow path 31, the detection component 40 can simultaneously output a detection signal including the pressure or flow rate information in the main flow path 31.

[0049] At this time, the syringe pump further includes a control component (not shown in the figure), which is configured to receive the detection signal output by the detection component 40 and implement the control of each valve 30 based on this detection signal. Specifically, the detection component 40 and the valves 30 on each syringe 20 are both communicatively connected to the control component, so that the control component can receive the detection signal from the detection component 40, and control the on / off or flow path switching of each valve 30 based on the pressure or flow rate in the main flow path 31 detected by the detection component 40, so as to realize the judgment of whether the flow path of the valve 30 is switched correctly based on the pressure or flow rate in the main flow path 31, and enable the detection component 40, the control component and each valve 30 to form a closed-loop control circuit. In this way, when the pressure or flow rate detected by the detection component 40 is not within the preset range, the control component can timely control the valve 30 to perform a flow path switching operation to ensure that the flow path of the valve 30 is switched correctly, reducing the risk of a smaller flow path and insufficient flow rate caused by incorrect flow path switching of the valve 30. Among them, the control component can be a controller arranged inside the housing 11. And, the aforementioned driving assembly 10 can also be communicatively connected to the control component, so that the driving assembly 10 can be controlled by the control component, thereby automatically controlling the push plate 12 to perform a reciprocating linear motion along the first direction. Further, the aforementioned communication connection of the driving assembly 10 to the control component means that the driving mechanism is communicatively connected to the control component.

[0050] In addition, for the syringe 20 used in the known syringe pump, the syringe barrel 23 of the syringe 20 is often made of glass, and the injection piston 24 is often made of plastic. In actual use, the injection piston 24 repeatedly rubs inside the syringe barrel 23, making the service life of the syringe barrel 23 lower than that of other components, so that the syringe barrel 23 becomes a component that needs to be frequently replaced.

[0051] Moreover, when replacing the syringe barrel 23, it is usually necessary to first control the movement of the push plate 12 of the driving assembly 10 to a position away from the injection end 22 of the syringe 20, so as to drive the injection piston 24 out of the syringe barrel 23 through the push plate 12, and then the disassembly and assembly operation of the syringe barrel 23 can be carried out. For the convenience of description, the embodiment of the present application defines the position where the push plate 12 is away from the injection end 22 of the syringe 20 as the reset position of the push plate 12.

[0052] However, in order to enable the push plate 12 to move to the reset position, known injection pumps often adopt the method of presetting a control program. This method usually requires the help of a host computer to control the movement of the push plate 12 to the reset position, and the implementation process is relatively complex. Therefore, the injection pump disclosed in the embodiment of the present application considers adding a reset component 50 to simplify the process of controlling the movement of the push plate 12 to the reset position.

[0053] Combined with Figure 1 or Figure 2 As shown in the content, a reset component 50 can be added to the outer wall of the housing 11. The reset component 50 is configured to selectively output a reset signal, so that the push plate 12 can move to the reset position away from the injection end 22 of each syringe 20 based on the reset signal.

[0054] For example, the reset component 50 can be a reset button provided on the outer wall of the housing 11, and each time the reset button is pressed, the reset button can output a reset signal. Moreover, the reset button can be communicatively connected to the control component, so that the control component can receive the reset signal from the reset component 50 and control the driving assembly 10 to act based on the reset signal, so that the push plate 12 moves to the reset position.

[0055] Specifically, when the syringe barrel 23 needs to be replaced, first press the reset button serving as the reset component 50 to output a reset signal, and then the control component controls the driving assembly 10 to act based on the reset signal. Specifically, it controls the driving mechanism to drive the push plate 12 to move in a direction away from the injection end 22 of each syringe 20 until the push plate 12 moves to the reset position away from the injection end 22 of each syringe 20. After that, the disassembly and replacement of the syringe barrel 23 can be carried out.

[0056] Secondly, continue to refer to Figure 1 or Figure 2, an indicating component 60 may also be provided on the outer wall of the housing 11. The indicating component 60 is configured to output an indication signal to indicate the operating state of the infusion pump. For example, the indicating component 60 may be an indicator light capable of outputting lights of different colors, so as to indicate different operating states of the infusion pump by outputting lights of different colors. For example, when the indicator light outputs a red light, it may indicate that the infusion pump is in a stopped operating state; when the indicator light outputs a green light, it may indicate that the infusion pump is in a normal operating state; when the indicator light outputs a yellow light, it may indicate that the infusion pump is in an abnormal (e.g., faulty) operating state.

[0057] Moreover, the indicating component 60 may also be communicatively connected to the aforementioned control component, so that the control component can control the indicating component 60 to output different indication signals according to the current operating state of the infusion pump. At the same time, the indicating component 60 may be integrated on the aforementioned reset component 50 to optimize the structural design of the reset component 50 and the indicating component 60. For example, a reset button with indicator lights of different colors may be used as both the reset component 50 and the indicating component 60.

[0058] On the other hand, considering that in actual applications, there may also be a situation where it is necessary to quickly remove the injection piston 24 from the push plate 12. For this reason, as Figure 1 shown, the present application further defines that a connection structure 70 corresponding to each syringe 20 is provided on the push plate 12, so that the injection piston 24 of each syringe 20 can be quickly connected to the push plate 12 or quickly removed from the push plate 12 by means of the corresponding connection structure 70.

[0059] Specifically, in combination with Figure 5 the content shown, each connection structure 70 includes a plugging slot 71 and a locking member 72. Among them, for a single connection structure 70, the single connection structure 70 is used in cooperation with a single syringe 20, and the plugging slot 71 of the single connection structure 70 is adapted to receive one end of the injection piston 24 of the corresponding syringe 20 extending outside the syringe barrel 23. In other words, one end of the injection piston 24 of the syringe 20 extending outside the syringe barrel 23 (i.e., the "power end 21 of the syringe 20") can be inserted into the corresponding plugging slot 71.

[0060] The locking member 72 is configured to lock or unlock the injection piston 24 located in the plugging slot 71. Specifically, after one end of the injection piston 24 extending outside the syringe barrel 23 is inserted into the corresponding plugging slot 71, the locking member 72 can lock the injection piston 24 located in the plugging slot 71, so as to temporarily fix the injection piston 24 to the push plate 12. On the contrary, only by unlocking the injection piston 24 located in the plugging slot 71 by the locking member 72, the injection piston 24 can be quickly removed from the corresponding plugging slot 71 to remove the injection piston 24, and the operation is simple and convenient.

[0061] For example, the locking member 72 can be a locking pin with a knob. The locking pin can extend into the insertion slot 71 and pass through the injection piston 24 located in the insertion slot 71, so as to lock the injection piston 24 located in the insertion slot 71. Among them, as Figure 3 shown, a locking hole 25 through which the locking pin passes can be formed in the injection piston 24.

[0062] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A syringe pump, characterized in that: include: A driving assembly, used for outputting reciprocating linear motion along a first direction; A plurality of syringes, each of which has a power end and an injection end opposite to each other in the first direction, the power end of each syringe is connected to the output end of the drive assembly, and the injection end of each syringe is provided with a valve; The valve comprises a main flow path and a plurality of branch flow paths, the main flow path is configured to selectively communicate with different branch flow paths, and the main flow path of each valve is communicated with the injection end of the corresponding syringe; The valve is provided with a detection component, and the detection component is configured to detect the pressure or flow in the main flow path of the corresponding valve.

2. The injection pump according to claim 1, characterized in that The detection component is further configured to output a detection signal including pressure or flow information in the main flow path; It also includes a control component that is communicatively connected to the detection component, and the control component is configured to receive the detection signal output by the detection component and control each of the valves based on the detection signal.

3. The injection pump according to claim 1, characterized in that The drive assembly comprises: shell; A driving mechanism is housed in the housing; the driving mechanism is configured to output the reciprocating linear motion; A push plate is connected to the output end of the driving mechanism and is located outside the shell; the power end of each of the syringes is connected to the push plate.

4. The injection pump according to claim 3, characterized in that: The outer wall of the housing is provided with a reset component, and the reset component is configured to selectively output a reset signal so that the push plate can move to a reset position away from the injection end of each syringe based on the reset signal.

5. The injection pump according to claim 3, characterized in that: Each of the syringes comprises a syringe and an injection piston arranged in the syringe, one end of the syringe serves as the injection end of the syringe, one end of the injection piston extends to the outside of the syringe through the other end of the syringe, and the end of the injection piston extending to the outside of the syringe serves as the power end of the syringe; The push plate is provided with a connection structure corresponding to each of the syringes one by one; The connection structure includes a plug-in slot and a locking member, wherein the plug-in slot is suitable for receiving an end of the injection piston extending outside the injection barrel; and the locking member is configured to lock or unlock the injection piston located in the plug-in slot.

6. The injection pump according to claim 3, characterized in that: The outer wall of the housing is also provided with an indication component, and the indication component is configured to output an indication signal to indicate the operating status of the injection pump.

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