CN210141185U - Injection pump capable of continuously feeding materials at constant flow rate - Google Patents
Injection pump capable of continuously feeding materials at constant flow rate Download PDFInfo
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- CN210141185U CN210141185U CN201920994620.XU CN201920994620U CN210141185U CN 210141185 U CN210141185 U CN 210141185U CN 201920994620 U CN201920994620 U CN 201920994620U CN 210141185 U CN210141185 U CN 210141185U
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Abstract
The utility model relates to a fluid pump field of making specifically is a but syringe pump of continuous feeding of constant flow, can be used to the continuous accurate injection of fine control liquid or gas. The syringe pump includes: the device comprises a first injector push plate, a first linear module, a first injector fixing seat, a second injector fixing seat, a first injector, a fluid pipe, a first electric three-way valve, an outlet three-way joint, an inlet three-way joint, a second electric three-way valve, a second injector, a second linear module and a second injector push plate. The utility model can be used for the gapless continuous constant-current precise injection of fine control liquid or gas, and can realize the precise flow control in a wider flow range by adopting the injector driving device which can be randomly replaced and changed, and simultaneously avoid the pollution problem caused by using a fixed injection cavity; in addition, by adopting two groups of injector drives and injector devices which can be independently controlled, strict non-intermittent constant-current continuous work can be realized.
Description
Technical Field
The utility model relates to a fluid pump field of making specifically is a but syringe pump of continuous feeding of constant flow, can be used to the continuous accurate injection of fine control liquid or gas.
Background
The precise fluid output and flow control technology is widely applied to the technical fields of medical health, biomedicine, chemical synthesis, material preparation, device processing and the like, and the realization of micro precise control of fluid output and flow detection is one of important basic technologies of the application. Currently, the micro-fluid control commonly used in the industry includes peristaltic pumps, syringe pumps, and the like. Among them, the peristaltic pump is suitable for the continuous fluid output control for a long time, but it is inaccurate to the fluid flow control, easily receives the environmental factor interference, has serious pulse flow in the fluid output process. The injection pump can realize fine fluid flow control, can obtain real-time flow information according to the propulsion speed of the injection pump, realizes uniform regulation and control of micro flow of fluid, and does not generate pulse flow phenomenon. However, since the syringe pump has a limited volume, the injection is stopped to replenish the fluid after the injection of one syringe, and the operation without intermittent continuity cannot be realized.
Chinese utility model publication No. CN206045103U discloses a bidirectional continuous injection pump, which is controlled by two back-to-back syringes and a push plate, and combines with a liquid inlet check valve and a liquid outlet check valve of the two syringes, when the push plate moves, one syringe discharges liquid and the other syringe sucks liquid, and the method can realize bidirectional automatic injection and liquid supplement through a simple structure. However, when the push plate reciprocates, the push plate needs to be decelerated to zero and then turned to accelerate, and the process can cause the liquid flow to be stopped, so that uniform and continuous flow control cannot be realized in a true sense.
The patent of the Chinese utility model with publication number CN205714622U discloses a three-cylinder piston type injection pump, the three cylinders are composed of three injectors, the piston rods of the injectors are respectively connected with an eccentric shaft on a rotary table through a rocker arm, the working principle of the three-cylinder piston type injection pump is similar to that of a three-cylinder automobile engine, the three injectors have unstable flow in the switching process, the strict and uniform flow cannot be obtained, the structure of the three-cylinder piston type injection pump is complex, and the difficulty in replacing the injectors is large. There is therefore a need for a new syringe pump device to achieve a strictly uninterrupted continuous operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a but syringe pump of constant flow continuous feed, accurate control fluid flow inhales and the discharge fluid automatically, realizes the work of non-intermittent type continuity.
The technical scheme of the utility model is that:
a constant flow continuous feed syringe pump comprising: first syringe push pedal, first sharp module, syringe fixing base one, syringe fixing base two, first syringe, fluid pipe, first electronic three-way valve, export three way connection, import three way connection, the electronic three-way valve of second, second syringe, the sharp module of second, second syringe push pedal, concrete structure is as follows:
the first injector push plate is arranged on the sliding table of the first linear module and moves back and forth along with the sliding table; the second injector push plate is arranged on the sliding table of the second linear module and moves back and forth along with the sliding table; one side of each of the first injector push plate and the second injector push plate is provided with a first injector fixing seat and a second injector fixing seat in parallel, one end of a push rod of the first injector is arranged on the first injector push plate, and an injection tube of the first injector is arranged on one group of the first injector fixing seat and the second injector fixing seat; one end of a push rod of the second injector is arranged on a push plate of the second injector, and an injection tube of the second injector is arranged on the other group of first injector fixing seats and the second injector fixing seats; one end of the first injector is connected with a first electric three-way valve through a fluid pipe, the first electric three-way valve is respectively connected with one port of the outlet three-way joint and one port of the inlet three-way joint through a fluid pipe, one end of the second injector is connected with a second electric three-way valve through a fluid pipe, and the second electric three-way valve is respectively connected with the other port of the outlet three-way joint and the other port of the inlet three-way joint through a fluid pipe.
But continuous syringe pump of feeding of constant flow, the U type opening internal surface of first syringe push pedal, second syringe push pedal all is equipped with draw-in groove one, in push rod one end embedding draw-in groove one, follow the push pedal and remove to be sliding fit with draw-in groove one.
The injection pump capable of continuously feeding at a constant flow rate is characterized in that a V-shaped or U-shaped opening is oppositely arranged on each group of parallel first injector fixing seats and second injector fixing seats, the inner surfaces of the V-shaped or U-shaped openings of the first injector fixing seats are provided with second clamping grooves, and a tail end chuck of each injector is embedded into the second clamping groove of the first injector fixing seat.
The injection pump capable of continuously feeding with constant flow, the first ports at the tops of the first electric three-way valve and the second electric three-way valve are respectively connected with the ports of the first injector and the second injector through fluid pipes; second side ports of the two electric three-way valves are connected to two opposite ports of the same inlet three-way joint through fluid pipes, and the other port of the inlet three-way joint is a liquid inlet; and third side ports of the two electric three-way valves are connected to two opposite ports of the same outlet three-way joint through fluid pipes, and the other port of the outlet three-way joint is a liquid outlet.
The injection pump capable of continuously feeding with constant flow rate is characterized in that the first linear module and the second linear module are not limited to a T-shaped lead screw linear module, a ball screw linear module, a gear tooth linear module or a belt linear module.
The injection pump capable of continuously feeding with a constant flow rate is characterized in that the first injector and the second injector are plastic injectors, glass injectors or metal injectors.
The design idea of the utility model is that:
the utility model relates to a precision injection pump basic structure and application method, its structure contains three basic subassembly: the device comprises a syringe driving device, a syringe, and a fluid pipeline device.
Syringe driving device
The injector driving device is composed of two groups of injection pumps which can independently run and have single channels, and each single-channel injection pump comprises a linear module, a push plate, an injector fixing seat and a fixing support. The push pedal is installed on the slip table of lead screw sharp module, and sharp module is installed in the fixed bolster, and the syringe fixing base is installed on the fixed bolster of sharp module top. The linear module may employ, but is not limited to, a T-screw linear module, a ball screw linear module, a gear tooth linear module, and a belt linear module for driving the ram of the injector to move. The middle of the push plate is provided with a clamping groove for fixing the top end of the push rod of the injector. The injector fixing seat is V-shaped or U-shaped, and a clamping groove is arranged in the middle of the injector fixing seat and used for fixing an injection tube of the injector.
(II) Syringe Assembly
The injector assembly comprises two injectors which are respectively arranged on two single-channel injection pumps, the injectors can adopt but not limited to plastic injectors, glass injectors and metal injectors, and the maximum range of the injectors is 5 mu l-1000 ml.
(III) fluid line device
The fluid pipeline device comprises 6 fluid pipes, two electric three-way valves and two three-way joints. One end of each of the two electric three-way valves is connected with the ports of the two injectors respectively, the other two ports of the two electric three-way valves are communicated through three-way joints, one of the three-way joints serves as a fluid inlet, and the other three-way joint serves as a fluid outlet. When the injector sucks fluid, the fluid enters the electric three-way valve from the three-way connector through a pipeline, the three-way valve is controlled to be communicated with the port of the injector and the fluid inlet port of the inlet three-way connector, and the fluid can enter the injector. When the injector discharges fluid, the fluid flows into the electric three-way valve from the port of the injector through a pipeline, the three-way valve is controlled to connect the port of the injector and the fluid outlet port of the outlet three-way joint, and the fluid can be discharged.
The utility model discloses an advantage and beneficial effect include:
(1) the utility model discloses a can change at will and change the syringe drive arrangement of syringe, can realize the accurate flow control in the wideer flow range, avoid using the pollution problem that fixed injection chamber brought simultaneously.
(1) The utility model discloses a fluid piping installation realizes the effect of fluid import and export separation, can the suction and the discharge of automatic control fluid.
(2) The utility model adopts two groups of independently controlled injector drives and injector devices, and realizes strict non-intermittent continuous work in the real sense.
Drawings
FIG. 1 shows the basic structure of a non-intermittent precision syringe pump.
The names of the components designated by numbers in the drawings are as follows:
1: a first injector push plate; 2: a first linear module; 3: a first injector fixing seat; 4: a second syringe fixing seat; 5: a first syringe; 6: a fluid pipe; 7: a first electric three-way valve; 8: an outlet tee joint; 9: an inlet three-way joint; 10: a second electric three-way valve; 11: a second syringe; 12: a second linear module; 13: a second injector push plate; 14: a first clamping groove; 15: a second clamping groove; 16: a chuck; 17: a push rod.
Detailed Description
The drawings and embodiments of the present invention are described in further detail, and the following embodiments are illustrative of the present invention and are not intended to limit the scope of the invention.
As shown in fig. 1, the basic structure of the non-intermittent precision injection pump of the present invention comprises: first syringe push pedal 1, first straight line module 2, syringe fixing base 3, syringe fixing base two 4, first syringe 5, fluid pipe 6, first electronic three-way valve 7, export three way connection 8, import three way connection 9, the electronic three-way valve 10 of second, second syringe 11, second straight line module 12, second syringe push pedal 13 etc. and specific structure is as follows:
the first injector push plate 1 is arranged on the sliding table of the first linear module 2 and moves back and forth along with the sliding table. The second injector push plate 13 is mounted on the sliding table of the second linear module 12 and moves back and forth along with the sliding table. One side of the first injector push plate 1 and one side of the second injector push plate 13 are both provided with a first injector fixing seat 3 and a second injector fixing seat 4 in parallel, one end of a push rod 17 of the first injector 5 is arranged on the first injector push plate 1, and an injection tube of the first injector 5 is arranged on one group of the first injector fixing seat 3 and the second injector fixing seat 4; one end of a push rod 17 of the second injector 11 is arranged on the second injector push plate 13, and an injection cylinder of the second injector 11 is arranged on the other group of the first injector fixing seat 3 and the second injector fixing seat 4; one end of the first injector 5 is connected with a first electric three-way valve 7 through a fluid pipe 6, the first electric three-way valve 7 is respectively connected with one port of an outlet three-way joint 8 and one port of an inlet three-way joint 9 through fluid pipes, one end of the second injector 11 is connected with a second electric three-way valve 10 through the fluid pipe 6, and the second electric three-way valve 10 is respectively connected with the other port of the outlet three-way joint 8 and the other port of the inlet three-way joint 9 through fluid pipes.
The inner surfaces of the U-shaped openings of the first injector push plate 1 and the second injector push plate 13 are respectively provided with a first clamping groove 14, one end of the push rod 17 is embedded into the first clamping groove 14, moves along with the push plates and is in sliding fit with the first clamping groove 14, and the width of the first clamping groove is 2 mm. And each group of parallel syringe fixing seats I3 and syringe fixing seats II 4 is relatively provided with a V-shaped opening, the inner surfaces of the V-shaped openings of the two syringe fixing seats I3 are respectively provided with a clamping groove II 15, and the width of the clamping groove II is 2 mm. The injection tubes of the two injectors (the first injector 5 and the second injector 11) are respectively arranged on a group of injector fixing seats I3 and injector fixing seats II 4, and the tail end chuck 16 of each injector is embedded into the clamping groove II 15 of the injector fixing seat I3, so that the injection tubes cannot axially slide along the injector fixing seats I3 and the injector fixing seats II 4 when sucking or discharging fluid.
The top first ports of the two electric three-way valves (the first electric three-way valve 7 and the second electric three-way valve 10) are respectively connected with the ports of the two injectors (the first injector 5 and the second injector 11) through fluid pipes 6. And second side ports of the two electric three-way valves are connected to two opposite ports of the same inlet three-way joint 9 through fluid, and the other port of the inlet three-way joint 9 is a liquid inlet. And third side ports of the two electric three-way valves are connected to two opposite ports of the same outlet three-way joint 8 through fluid pipes, and the other port of the outlet three-way joint 8 is a liquid outlet.
The scheme of the embodiment is used as follows:
firstly, controlling the two electric three-way valves to be communicated with the ports of the injectors and the ports of the fluid inlets, respectively driving the first injector push plate 1, the second injector push plate 13 and the injector push rod 17 to be pulled backwards, so that the liquid is injected into the two injectors simultaneously, and when the cavities of the injectors are filled with the liquid, the two linear modules stop moving simultaneously, and controlling the first electric three-way valve 7 to be communicated with the ports of the first injectors 5 and the three-way connectors 8 of the fluid outlets. The first linear module 2 respectively drives the first injector push plate 1 and the first injector 5 to extrude liquid according to the set flow rate, when the residual volume of the liquid in the first injector cavity is about 10%, the first linear module 2 continuously keeps the set flow rate to operate, and meanwhile, the second electric three-way valve 10 is controlled to be communicated with the port of the second injector and the outlet three-way connector 8. The first linear module 2 decelerates according to a fixed deceleration while the second linear module 12 accelerates according to the same fixed acceleration, and when the running speed of the first linear module 2 decreases to zero, the running speed of the second linear module 12 just adds to the running speed of the set flow. Then, the first electric three-way valve 7 is controlled to connect the port of the first injector 5 with the inlet three-way joint 9, the second linear module 12 keeps the set flow rate operation, and when the liquid continuously flows out of the outlet three-way joint 8, the first linear module 2 drives the first injector push plate 1 and the injector push rod 17 to be pulled backwards, and the liquid is injected into the first injector 5. When the remaining volume of the liquid in the second syringe 11 is about 10%, the operation of the first syringe 5 is switched as described above. The two injectors are operated in a circulating and reciprocating mode, so that continuous liquid extrusion can be achieved, and meanwhile accurate flow control of the injectors can be maintained.
By utilizing the independent operation of the two injectors and combining the two electric three-way valves and the two three-way joints (the outlet three-way joint and the inlet three-way joint), the problem of pause caused in the suction and discharge processes of the injectors can be solved, and the strict non-intermittent continuous work can be realized in the true sense.
The above is a preferred embodiment of the present invention, and is not intended to limit the present invention. Wherein, each component of the device can also be modified and deformed, without departing from the technical principle of the utility model, the modification and the deformation should also be regarded as the protection scope of the utility model. The attached embodiments of the present invention are further detailed descriptions of the specific embodiments of the present invention, and the following embodiments are used for the description of the present invention, but do not limit the scope of the present invention.
Example 1:
in the embodiment, two identical injectors with the maximum capacity of 10 mul are adopted, the corresponding volume of the stroke is 0.1 mul/mm, and the injection flow is required to be 0.05 mul/min for uninterrupted continuous injection. And in the injection starting stage, the two electric three-way valves are controlled to be communicated with the port of the injector and the fluid inlet port of the inlet three-way joint, the two linear modules respectively drive the push plate and the injector push rod to pull backwards so that liquid is simultaneously injected into the two injectors, and when the cavity of the injector is filled with the liquid, the two linear modules simultaneously stop moving and control the first electric three-way valve to be communicated with the port of the first injector and the outlet three-way joint. The first linear module respectively drives the first injector push plate to push the first injector push rod to extrude liquid at the speed of 0.5mm/min, when 2 mu l of liquid remains in the first injector cavity, the first linear module continuously keeps the set flow to operate, and simultaneously controls the second electric three-way valve to be communicated with the port of the second injector and the outlet three-way connector. The first linear module is set at 0.1mm/min2The deceleration of the second linear module is reduced, and the second linear module operates at 0.1mm/min2Acceleration runs in an accelerated manner. When the running speed of the first linear module is reduced to zero, just the speed of the second linear module is just added to the running speed of 0.5mm/min, the sum of the pushing speeds of the two injectors in the process of handing over the two injection pumps is always kept at 0.5mm/mi, the corresponding liquid flow is stabilized at 0.05 mu l/min and is uninterrupted, then the first electric three-way valve is controlled to be communicated with the port of the first injector and the inlet three-way joint, the second linear module is kept running at the set flow, and the liquid is continuously discharged from the outlet three-way jointAnd when the liquid flows out, the first linear module drives the push plate and the injector push rod to pull backwards, and the liquid is injected into the first injector. When 2 mul of liquid in the second syringe is remained, the operation of the first syringe is switched according to the above. The two injectors are operated in such a way that the liquid can be continuously extruded at a constant high flow rate of 0.05 mu l/min, and the accurate flow control of the injectors can be maintained, and the flow control accuracy of the injectors is high<±0.0001μl/min。
Example 2:
in this example, two identical syringes of maximum 20ml capacity were used for the two syringes, with a stroke-corresponding volume of 0.2 ml/mm. Continuous injection with an injection flow of 1.2ml/min is required. And in the injection starting stage, the two electric three-way valves are controlled to be communicated with the port of the injector and the fluid inlet port of the inlet three-way joint, the two linear modules respectively drive the push plate and the injector push rod to pull backwards so that liquid is simultaneously injected into the two injectors, and when the cavity of the injector is filled with the liquid, the two linear modules simultaneously stop moving and control the first electric three-way valve to be communicated with the port of the first injector and the outlet three-way joint. The first linear module respectively drives the first injector push plate to push the first injector push rod to extrude liquid at the speed of 6mm/min, when 4ml of liquid remains in the first injector cavity, the first linear module continuously keeps the set flow to operate, and simultaneously controls the second electric three-way valve to be communicated with the port of the second injector and the outlet three-way connector. The first linear module is set at 0.5mm/min2The deceleration of the second linear module is reduced, and the second linear module operates at 0.5mm/min2Acceleration runs in an accelerated manner. When the running speed of the first linear module is reduced to zero, just in time the speed of the second linear module is just added to the running speed of 6mm/min, the sum of the pushing speeds of two injectors in the process of connecting two injection pumps is always kept at 6mm/min, the corresponding liquid flow is stabilized to be uninterrupted at 1.2ml/min, then the first electric three-way valve is controlled to be communicated with the port of the first injector and the inlet three-way joint, the second linear module is kept running at the set flow, when the liquid flows out of the outlet three-way joint uninterruptedly, the first linear module drives the push plate and the injector push rod to pull backwards, and the liquid is injected into the first injector. When 4ml of liquid remained in the second syringe,the operation of the first syringe is switched as described above. The two injectors are operated in such a way that the liquid can be continuously extruded at a constant high flow rate of 1.2ml/min, and meanwhile, the accurate flow control of the injectors can be maintained, and the flow control accuracy is high<±0.2μl/min。
Example 3:
in this example, two identical syringes of maximum capacity 500ml were used for the two syringes, with a stroke-corresponding volume of 2.5 ml/mm. Continuous injection with a jet flow of 50ml/min is required. And in the injection starting stage, the two electric three-way valves are controlled to be communicated with the port of the injector and the fluid inlet port of the inlet three-way joint, the two linear modules respectively drive the push plate and the injector push rod to pull backwards so that liquid is simultaneously injected into the two injectors, and when the cavity of the injector is filled with the liquid, the two linear modules simultaneously stop moving and control the first electric three-way valve to be communicated with the port of the first injector and the outlet three-way joint. The first linear module respectively drives the first injector push plate to push the first injector push rod to extrude liquid at the speed of 20mm/min, when 100ml of liquid remains in the first injector cavity, the first linear module continuously keeps the set flow to operate, and simultaneously controls the second electric three-way valve to be communicated with the port of the second injector and the outlet three-way connector. The first linear module is arranged at a rate of 1mm/min2The deceleration of the first linear module is reduced, and the second linear module operates at 1mm/min2Acceleration runs in an accelerated manner. When the running speed of the first linear module is reduced to zero, just the speed of the second linear module is just added to the running speed of 20mm/min, the sum of the pushing speeds of two injectors in the process of connecting two injection pumps is always kept at 20mm/min, the flow of corresponding liquid is stabilized at 50ml/min and is not interrupted, then the first electric three-way valve is controlled to be communicated with the port of the first injector and the inlet three-way joint, the second linear module is kept running at the set flow, the liquid flows out of the outlet three-way joint uninterruptedly, meanwhile, the first linear module drives the push plate and the injector push rod to be pulled backwards, and the liquid is injected into the first injector. When 100ml of the liquid in the second syringe remained, the operation of the first syringe was switched as described above. The two injectors are operated in such a way that the liquid can be continuously extruded at a constant high flow rate of 50ml/min, and simultaneously, the liquid can be continuously extrudedCan maintain accurate flow control of the injector and the flow control precision thereof<±2.5μl/min。
The above three embodiments are further illustrative of the embodiments of the present invention, and a plurality of modifications and variations can be made to each component part therein without departing from the principles of the present invention.
Claims (6)
1. An injection pump capable of feeding continuously at a constant flow rate, comprising: first syringe push pedal, first sharp module, syringe fixing base one, syringe fixing base two, first syringe, fluid pipe, first electronic three-way valve, export three way connection, import three way connection, the electronic three-way valve of second, second syringe, the sharp module of second, second syringe push pedal, concrete structure is as follows:
the first injector push plate is arranged on the sliding table of the first linear module and moves back and forth along with the sliding table; the second injector push plate is arranged on the sliding table of the second linear module and moves back and forth along with the sliding table; one side of each of the first injector push plate and the second injector push plate is provided with a first injector fixing seat and a second injector fixing seat in parallel, one end of a push rod of the first injector is arranged on the first injector push plate, and an injection tube of the first injector is arranged on one group of the first injector fixing seat and the second injector fixing seat; one end of a push rod of the second injector is arranged on a push plate of the second injector, and an injection tube of the second injector is arranged on the other group of first injector fixing seats and the second injector fixing seats; one end of the first injector is connected with a first electric three-way valve through a fluid pipe, the first electric three-way valve is respectively connected with one port of the outlet three-way joint and one port of the inlet three-way joint through a fluid pipe, one end of the second injector is connected with a second electric three-way valve through a fluid pipe, and the second electric three-way valve is respectively connected with the other port of the outlet three-way joint and the other port of the inlet three-way joint through a fluid pipe.
2. The syringe pump of claim 1, wherein the first and second syringe push plates have a first engaging groove on the inner surface of the U-shaped opening, and the push rod has one end inserted into the first engaging groove, and moves along with the first push plate and slidably engages with the first engaging groove.
3. The syringe pump capable of feeding continuously at a constant flow rate as claimed in claim 1, wherein each set of parallel syringe holders one and syringe holders two are provided with V-shaped or U-shaped openings, the inner surfaces of the V-shaped or U-shaped openings of the syringe holders one are provided with two notches, and the tail end chuck of each syringe is inserted into the notch two of the syringe holder one.
4. The constant flow, continuous feed syringe pump of claim 1, wherein the top first ports of the first and second electrically operated three-way valves are respectively connected to the ports of the first and second injectors by fluid lines; second side ports of the two electric three-way valves are connected to two opposite ports of the same inlet three-way joint through fluid pipes, and the other port of the inlet three-way joint is a liquid inlet; and third side ports of the two electric three-way valves are connected to two opposite ports of the same outlet three-way joint through fluid pipes, and the other port of the outlet three-way joint is a liquid outlet.
5. The constant flow continuous feed syringe pump of claim 1, wherein the first linear module and the second linear module are selected from the group consisting of a T-bar linear module, a ball screw linear module, a gear tooth linear module, and a belt linear module.
6. The syringe pump of claim 1, wherein the first syringe and the second syringe are plastic syringes, glass syringes or metal syringes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994620.XU CN210141185U (en) | 2019-06-28 | 2019-06-28 | Injection pump capable of continuously feeding materials at constant flow rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994620.XU CN210141185U (en) | 2019-06-28 | 2019-06-28 | Injection pump capable of continuously feeding materials at constant flow rate |
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| Publication Number | Publication Date |
|---|---|
| CN210141185U true CN210141185U (en) | 2020-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920994620.XU Active CN210141185U (en) | 2019-06-28 | 2019-06-28 | Injection pump capable of continuously feeding materials at constant flow rate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206704A (en) * | 2019-06-28 | 2019-09-06 | 深圳烯材科技有限公司 | It is a kind of can constant flow rate continuous feed syringe pump and its application method |
| CN114534012A (en) * | 2022-02-22 | 2022-05-27 | 南京润泽流体控制设备有限公司 | Constant flow injection pump |
-
2019
- 2019-06-28 CN CN201920994620.XU patent/CN210141185U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206704A (en) * | 2019-06-28 | 2019-09-06 | 深圳烯材科技有限公司 | It is a kind of can constant flow rate continuous feed syringe pump and its application method |
| CN114534012A (en) * | 2022-02-22 | 2022-05-27 | 南京润泽流体控制设备有限公司 | Constant flow injection pump |
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