CN219388082U - Injection pump - Google Patents

Abstract

The utility model discloses an injection pump, which converts the forward and backward movement of a moving plate into the left and right movement of a push block through the cooperation of a guide groove on a swinging strip and an inserting column on the push block; under the condition that the swing bar and the driving mechanism are not installed, when all the injector push rods are pushed to the innermost position, all the inserting columns and all the first hinge points are positioned on a first connecting line, and for each group of corresponding inserting columns and first hinge points, the first distance value between the first hinge points and the inserting columns is the same in the forward and backward movement process of the moving plate; thus, after the swinging strip and the driving mechanism are installed, the moving plate moves to the position when the first distance value between the first hinge point and the inserted column is zero, and the push rod of the injector is pushed to the innermost position; the right end of the swinging strip is movably and fixedly connected to the moving plate, and the position of the right end of the swinging strip is changed to adapt to syringes with different amounts; has the beneficial effects that: 1. the operation is more convenient; 2. improving the uniformity and the synchronism of the adding speed of the raw materials with different amounts.

Description

Injection pump

Technical Field

The utility model relates to an injection device, in particular to an injection pump.

Background

Syringe pumps are commonly used for medical injection, as well as raw material addition during industrial production and experimental procedures. In the manufacturing process of the cadmium-free quantum dot, several set liquid raw materials are required to be added into a heated and stirred flask and mixed with a solvent. The uniformity and synchronism of the addition rate of several raw materials is very important in the whole addition process, and the amounts of several raw materials are not necessarily the same, which results in that it is not possible to directly use a multi-fixed-position syringe pump and to simultaneously inject several syringes.

At present, a plurality of injection pumps are adopted, the injection speed of each injection pump to an injector is calculated according to different amounts of a plurality of raw materials and the time set by injection completion, the injection speed is adjusted to a relatively proper gear, and then the plurality of injection pumps are started simultaneously. Such an operation is complicated, and since the current speed regulation of the syringe pump is generally gear-type, many times it cannot fully correspond to the required injection speed, resulting in uniformity and synchronicity of the addition speeds of several raw materials to be improved.

Disclosure of Invention

The application provides a syringe pump, can solve and put forward the problem among the background art.

In this application, there is provided a syringe pump comprising:

the left side of the fixing frame is provided with a plurality of first fixing positions for fixing the syringe needle cylinder along the front-rear direction;

the pushing blocks are used for fixing the tail end of the injector push rod, are connected to the fixing frame in a left-right sliding mode, and correspond to the first fixing positions one by one; the plurality of push blocks are fixedly provided with inserted columns, and when any syringe push rod is pushed to the innermost position, the inserted columns on the corresponding push blocks are positioned on a first connecting line facing front and back;

the movable plate is connected to the fixed frame in a front-back sliding way, a plurality of first hinge points are further arranged along the first connecting line, and the first hinge points correspond to the pushing blocks respectively; when all the injector push rods are pushed to the innermost position, all the inserting posts are also positioned on the first connecting line, and for each group of corresponding inserting posts and first hinge points, the first distance value between the first hinge points and the inserting posts in the front-back direction is the same in the front-back movement process of the moving plate;

the left ends of the swing bars are hinged to the first hinge points in sequence, and the right ends of the swing bars are movably and fixedly connected to the moving plate; the inserting columns on the pushing blocks are respectively inserted into the guide grooves on the swinging strips;

the driving mechanism is used for driving the moving plate to slide back and forth relative to the fixed frame.

Further, the pushing blocks are arranged at equal intervals in the front-rear direction, the first hinge points are also arranged at equal intervals, and the interval values of the pushing blocks and the first hinge points are the same.

Further, the driving mechanism is an air cylinder, the air cylinder is fixedly connected to the fixing frame, and the moving plate is fixedly connected to the telescopic rod.

Further, the driving mechanism is a linear module and is arranged on the fixed frame, and the moving plate is fixedly connected with the matched linear sliding block.

Further, the right end of each swing strip corresponding to the movable plate is provided with an arc through groove, the circle center corresponding to the arc through groove is overlapped with the first hinge point corresponding to the swing strip, the right end of each swing strip is connected with a second screw in a threaded manner, and the second screw penetrates through the corresponding arc through groove.

To sum up, in this application, a syringe pump through the cooperation of guide slot and push block upper plug-in post on the swing strip, will remove the fore-and-aft of movable plate, changes the left and right sides removal of push block. Under the condition that the swing bar and the driving mechanism are not installed, when all the injector push rods are pushed to the innermost position, all the inserting posts and all the first hinge points are all positioned on a first connecting line, and for each group of corresponding inserting posts and first hinge points, the first distance value between the first hinge points and the inserting posts is the same in the forward and backward movement process of the moving plate. Thus, after the swinging strip and the driving mechanism are installed, the moving plate moves to the position when the first distance between the first hinge point and the inserted column is zero, and the push rod of the injector is pushed to the innermost position. The right end of the swinging strip is movably and fixedly connected to the movable plate, and the position of the right end of the swinging strip is changed to adapt to syringes with different amounts. The moving plate moves to zero when the first distance between the first hinge point and the plunger is zero, and the plurality of syringes complete the injection together.

Has the beneficial effects that: 1. the operation is more convenient; 2. improving the uniformity and the synchronism of the adding speed of the raw materials with different amounts.

Drawings

In order to better and clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings used in the embodiments or the background of the present application.

FIG. 1 is a schematic view of the structure of the present utility model;

FIG. 2 is a schematic view of the plunger and all first hinge points on the corresponding pusher block in a first connection when the injector push rod is pushed to the innermost position without the wobble stick and the drive mechanism installed;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is an exploded view of the mount;

FIG. 5 is a schematic view showing the arrangement of the moving plate on the fixed frame;

FIG. 6 is a schematic view showing the arrangement of the swinging bar on one side of the moving plate;

FIG. 7 is a schematic view showing the arrangement of the swinging bar on the other side of the moving plate;

FIG. 8 is a schematic view of a plurality of syringes adjusted to different amounts;

FIG. 9 is a schematic view of the second screw corresponding to the moving plate of FIG. 8;

fig. 10 is a schematic view showing simultaneous completion of injection by a plurality of syringes in the state of fig. 8.

In the figure, 1, a fixing frame; 1-1, upper layer plate; 1-1A, a first notch; 1-1B, a first fixed position; 1-2, lower layer plate; 1-2A, a first bump bar; 1-2B, a second notch; 1-3, connecting strips; 2. a pushing block; 2A, clamping grooves; 2B, inserting a column; 3. a moving plate; 3A, a first hinge point; 3B, arc through grooves; 4. a linear module; 4A, a linear slide block; 5. a swinging bar; 5A, a guide groove; 6. pressing strips; 7. a first linear guide rail; 7A, a first sliding block; 8. a first wire; 9. a second linear guide rail; 9A, a second sliding block; 10. a first screw; 11. and a second screw.

Detailed Description

Further description is provided below in connection with the accompanying drawings. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Referring to fig. 1, an injection pump includes a fixed frame 1, a plurality of pushing blocks 2, a moving plate 3, a driving mechanism, and a plurality of swinging bars 5. Wherein the pushing blocks 2 and the swinging strips 5 are matched one by one, the number is the same, and three are taken as an example in the drawing.

The fixing frame 1 comprises an upper layer plate 1-1, a lower layer plate 1-2 and connecting strips 1-3, wherein a plurality of first notches 1-1A are formed in the right side position of the upper layer plate 1-1, and a plurality of first protruding strips 1-2A are fixedly arranged in the left side position of the lower layer plate 1-2. The left part of the upper plate 1-1 is fixedly connected to a plurality of first protruding strips 1-2A, the connecting strips 1-3 are fixedly connected to the right position of the upper plate 1-1 and the right position of the lower plate, and the fixing frame 1 is built, so that the right position of the fixing frame 1 is provided with an installation space.

The left side of the upper plate 1-1 in the fixing frame 1 is also provided with a plurality of first fixing positions 1-1B along the front-back direction, and the first fixing positions 1-1B are used for fixing the syringe needle cylinder in cooperation with a detachable pressing bar 6.

Referring to fig. 1 and 4, a plurality of pushing blocks 2 are all slidably connected to the fixing frame 1 in a left-right direction and are in one-to-one correspondence with a plurality of first fixing positions 1-1B, specifically, the plurality of first notches 1-1A are in one-to-one correspondence with a plurality of first fixing positions 1-1B, the inner walls of two sides of the first notches 1-1A are fixedly connected with first linear guide rails 7, and the pushing blocks 2 are fixedly connected with first sliding blocks 7A matched with the two first linear guide rails 7.

The plurality of pushing blocks 2 are respectively provided with a clamping groove 2A for placing and fixing the tail end of the push rod of the injector, and the corresponding injector can be subjected to sucking and injecting operations by moving the pushing blocks 2.

Referring to fig. 2, the plurality of push blocks 2 are further provided with pins 2B, and when any syringe push rod is pushed to the innermost position, the pins 2B on the corresponding push block 2 are located on the first connecting line 8 facing front and back. That is, the plurality of mounting positions are aligned, the plurality of push blocks 2 are identical, the syringe specifications mounted on each mounting position are identical, and the plunger 2B is aligned in the front-rear direction when all the syringe pushers are pushed to the innermost positions.

Referring to fig. 4 and 5, the moving plate 3 is movably connected to the fixed frame 1, specifically, two second linear guide rails 9 are fixedly connected to the right side of the lower plate 1-2, and the moving plate 3 is fixedly connected to a second slider 9A matched with the two second linear guide rails 9.

Referring to fig. 2, the moving plate 3 is further provided with a plurality of first hinge points 3A along the first connecting line 8, where the number of the first hinge points 3A is the same as that of the pushing blocks 2, and the first hinge points are in one-to-one correspondence with the pushing blocks 2. When all the syringe pushers are pushed to the innermost position, all the posts 2B and all the first hinge points 3A are located on the first connecting line 8, and for each group of corresponding posts 2B and first hinge points 3A, the first distance value between the first hinge points 3A and posts 2B in the front-rear direction is the same in the front-rear movement process of the moving plate 3. Optionally, the convenient arrangement mode for achieving the above effect is that the plurality of pushing blocks 2 are arranged at equal intervals in the front-rear direction, the plurality of first hinging points 3A are also arranged at equal intervals, and the interval values of the two are the same.

Referring to fig. 6 and 7, the left ends of the swinging strips 5 are hinged to the first hinge points 3A in sequence, and the right ends of the swinging strips are movably and fixedly connected to the moving plate 3. Optionally, the right end of each swinging strip 5 corresponding to the moving plate 3 is provided with an arc through groove 3B, and the circle center corresponding to the arc through groove 3B coincides with the first hinging point 3A corresponding to the swinging strip 5. The right end of each swinging strip 5 is connected with a second screw 11 in a threaded manner, and the second screw 11 passes through the corresponding arc-shaped through groove 3B. Thus, by unscrewing the second screw 11, the swinging bar 5 can be swung along the first hinge point 3A, and by screwing the second screw 11, the swinging bar 5 can be relatively fixed to the moving plate 3.

The plurality of swinging strips 5 are all provided with guide way 5A, and guide way 5A covers first pin joint 3A, and specifically, first pin joint 3A is the through-hole, and the bottom surface of swinging strip 5 left end has set firmly the first spliced pole of cooperation through-hole, and first spliced pole surpasses the through-hole slightly to threaded connection has first screw 10, and like this, swinging strip 5 just do not interfere with the setting of guide way 5A at the articulated setting of first pin joint 3A. The insertion posts 2B of the plurality of push blocks 2 are inserted into the guide grooves 5A of the plurality of swing bars 5, respectively. When the swinging bar 5 is relatively fixed on the moving plate 3, the cooperation of the inserting column 2B and the guiding groove 5A (the diameter of the inserting column 2B is equal to the width of the guiding groove 5A) is used for enabling the moving plate 3 to drive the corresponding pushing block 2 of the swinging bar 5 to move, so that the corresponding injector can perform the operations of sucking and injecting.

Referring to fig. 8, it can be seen that when the amounts in the plurality of syringes are different, the left and right positions of the plurality of push blocks 2 are also different, and the positions of the right ends of the plurality of swing bars 5 are changed to adapt, so as to maintain the cooperation between the plunger 2B and the guide groove 5A. The moving plate 3 moves, and a plurality of syringes start injection together; the moving plate 3 moves to zero (which is also why the above-described "guide groove 5A covers the first hinge point 3A") at the first interval value between the first hinge point 3A and the plunger 2B, and the injection is completed by a plurality of syringes together.

The driving mechanism is used for driving the moving plate 3 to move back and forth relative to the fixed frame 1.

Optionally, the driving mechanism is an air cylinder, the air cylinder is fixedly connected to the right side position of the lower layer plate 1-2, and the movable plate 3 is fixedly connected to the telescopic rod.

Referring to fig. 4 and 5, alternatively, the driving mechanism is a linear module 4 (which may be a screw type or a synchronous belt type), the linear module 4 is disposed at the right side of the lower plate 1-2, and the moving plate 3 is fixedly connected to a matched linear slider 4A. Compared with the air cylinder, the positioning of the linear module 4 is more convenient and more accurate, and the motor of the linear module 4 adopts an adjustable speed type, so that the moving speed of the movable plate 3 driven by the linear module 4 can be adjusted more conveniently.

Initially, the right-hand member of a plurality of swing strips 5 all is in the first end of arc logical groove 3B, and first interval value between first pin joint 3A and the inserted link 2B is zero, brief description the utility model discloses a working process:

s1, referring to FIG. 1, a moving plate 3 moves to drive a plurality of injectors to simultaneously extract raw materials to be injected, and the raw materials with the largest amount are extracted to slightly exceed the numerical value;

s2, moving the moving plate 3 to drive a plurality of injectors to simultaneously discharge a small amount of raw materials and gas in the pipe, and simultaneously reducing the maximum raw materials to a required value;

s3, referring to fig. 8 and 9, the swinging strips 5 of the rest raw materials are adjusted one by one, the swinging strips 5 are swung, the pushing block 2 is driven to move, and after the corresponding injector continuously discharges the raw materials to a required value, the right end of the swinging strips 5 is fixed; optionally, a second notch 1-2B is arranged at the right side of the lower layer plate 1-2, and the second screw 11 can be conveniently unscrewed through the second notch 1-2B to swing the swinging strip 5;

s4, referring to FIG. 10, the movement speed of the linear module 4 is adjusted, and the moving plate 3 moves to drive a plurality of injectors to simultaneously start injecting raw materials and simultaneously end.

Claims (5)

1. A syringe pump, comprising:

the fixing frame (1), the left side of the fixing frame (1) is provided with a plurality of first fixing positions (1-1B) for fixing the syringe cylinder along the front-back direction;

the pushing blocks (2) are used for fixing the tail end of the injector push rod, the pushing blocks (2) are all connected to the fixing frame (1) in a left-right sliding mode and correspond to the first fixing positions (1-1B) one by one; the plurality of push blocks (2) are fixedly provided with inserted columns (2B), and when any syringe push rod is pushed to the innermost position, the inserted columns (2B) on the corresponding push blocks (2) are positioned on a first connecting line (8) facing forwards and backwards;

the movable plate (3), the movable plate (3) is connected to the fixed frame (1) in a front-back sliding way, the movable plate (3) is further provided with a plurality of first hinge points (3A) along the first connecting line (8), and the plurality of first hinge points (3A) respectively correspond to the plurality of pushing blocks (2); when all the injector push rods are pushed to the innermost position, all the inserting posts (2B) are also positioned on the first connecting line (8), and for each group of corresponding inserting posts (2B) and first hinging points (3A), the first spacing values between the first hinging points (3A) and the inserting posts (2B) in the front-back direction are the same in the front-back movement process of the moving plate (3);

the swinging strips (5) are provided with guide grooves (5A), the guide grooves (5A) cover the first hinging points (3A), the left ends of the swinging strips (5) are sequentially hinged to the first hinging points (3A), and the right ends of the swinging strips are movably and fixedly connected to the movable plate (3); the inserting columns (2B) on the plurality of pushing blocks (2) are respectively inserted into the guide grooves (5A) on the plurality of swinging strips (5);

the driving mechanism is used for driving the moving plate (3) to slide back and forth relative to the fixed frame (1).

2. A syringe pump according to claim 1, wherein a plurality of said push blocks (2) are arranged at equal intervals in the front-rear direction, and a plurality of said first hinge points (3A) are also arranged at equal intervals, the interval values of both being the same.

3. A syringe pump according to claim 1, wherein the driving mechanism is a cylinder, the cylinder is fixedly connected to the fixing frame (1), and the moving plate (3) is fixedly connected to the telescopic rod.

4. The injection pump according to claim 1, wherein the driving mechanism is a linear module (4) and is arranged on the fixing frame (1), and the moving plate (3) is fixedly connected to a matched linear slider (4A).

5. An injection pump according to claim 1, wherein the right end of each swinging strip (5) corresponding to the moving plate (3) is provided with an arc-shaped through groove (3B), the circle center corresponding to the arc-shaped through groove (3B) is overlapped with the first hinging point (3A) corresponding to the swinging strip (5), the right end of each swinging strip (5) is in threaded connection with a second screw (11), and the second screw (11) penetrates through the corresponding arc-shaped through groove (3B).