Injection pump with injection cylinder convenient to replace

Abstract

The utility model relates to the technical field of injection pumps, in particular to an injection pump with a syringe convenient to replace, which comprises a mounting frame, a driver is fixedly mounted on one side of the mounting frame, a containing box is fixedly mounted on one side, away from the driver, of the mounting frame, an avoiding hole is formed in one side, away from the driver, of the containing box, and a piston is fixedly mounted at the output end of the driver. The side, away from the driver, of the containing box is fixedly provided with a connecting piece, the receding hole penetrates through the connecting piece, the side, away from the containing box, of the connecting piece is provided with a mounting opening, the side face of the connecting piece is provided with an inserting opening, a fixing plate is slidably inserted into the inserting opening, a syringe is inserted into the mounting opening, and the outer side of the upper end of the syringe is provided with an outer edge ring. Through the injection cylinder and the fixing plate which are installed in an inserted mode, the disassembly and assembly process of the injection cylinder is simplified, and the injection cylinder is easier and more convenient to replace.

Description

Technical Field

[0001] The present application relates to the technical field of injection pumps, and more particularly to an injection pump that facilitates the replacement of a syringe barrel. Background Art

[0002] An injection pump is a device used for quantitatively extracting liquid. An injection pump generally consists of a syringe part and a driver part, and the driver pushes the syringe to extract and inject liquid. However, during use, in order to avoid cross-contamination or due to reasons such as wear, it is necessary to frequently replace the syringe part, and the disassembly and assembly are rather troublesome. Summary of the Invention

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the present application is to provide an injection pump that facilitates the replacement of a syringe barrel.

[0004] The above application purpose of the present application is achieved through the following technical solutions:

[0005] An injection pump that facilitates the replacement of a syringe barrel, comprising:

[0006] A mounting frame, on which mounting holes are provided;

[0007] A driver, which is fixedly installed on one side of the mounting frame;

[0008] A receiving box, which is fixedly installed on the side of the mounting frame away from the driver;

[0009] An avoidance hole, which is provided on the side of the receiving box away from the driver, and the output end of the driver penetrates through the receiving box and is coaxial with the avoidance hole;

[0010] A piston, which is fixedly installed on the output end of the driver;

[0011] A connecting member, which is fixedly installed on the side of the receiving box away from the driver, and the avoidance hole penetrates through the connecting member;

[0012] An installation port, which is provided on the side of the connecting member away from the receiving box;

[0013] An insertion interface, which is provided on the side of the connecting member, and a fixing plate is slidably inserted into the insertion interface;

[0014] A syringe barrel, on the outer side of the upper end of which an outer edge ring is provided, and the syringe barrel is inserted and installed in the installation port;

[0015] Wherein, when the syringe barrel is inserted and installed in the installation port, after the fixing plate is inserted into the insertion interface, it is located below the outer edge ring.

[0016] Optionally, the driver is a through-type stepping motor.

[0017] Optionally, a fixing groove is provided on the upper side of the plug interface, and the outer edge ring is engaged with the fixing groove.

[0018] Optionally, an auxiliary plate is slidably installed on the inner side of the plug interface, and a semicircular groove is opened on one side of the auxiliary plate and the fixed plate. After installation, the injection cylinder is located in the semicircular groove of the auxiliary plate and the fixed plate.

[0019] Optionally, a magnet is provided at one end of the auxiliary plate and the fixed plate that are close to each other.

[0020] Optionally, the magnetic poles of the magnets at both ends of the auxiliary plate and the fixed plate are different.

[0021] Optionally, the piston is detachably connected to the driver.

[0022] Optionally, a buffer pad is installed on the side of the magnet of the fixed plate close to the auxiliary plate.

[0023] Optionally, the mounting frame is fixedly connected to a sliding groove rail, a sliding block is slidably mounted on the sliding groove rail, and the sliding block is fixedly connected to an end of the driver output shaft away from the piston.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] The syringe and the fixing plate are plugged together to simplify the disassembly and assembly process of the syringe, making the replacement of the syringe easier;

[0026] By providing a fixing groove, the outer edge ring is engaged with the fixing groove, so that the outer edge ring is fixed on the radial plane, thereby reducing the radial shaking of the injection barrel when in use;

[0027] By arranging the auxiliary plate, support is formed on the side of the outer ring away from the fixed plate, so that the force on the outer ring is balanced and the shaking of the injection barrel when in use is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0029] Figure 2 It is a schematic structural diagram of the connector part of an embodiment of the present application.

[0030] Reference numerals: 1, mounting frame; 11, sliding groove rail; 12, sliding block;

[0031] 2. Driver;

[0032] 3. Accommodation box; 31. Avoidance hole;

[0033] 41. Piston; 42. Syringe barrel; 421. Outer edge ring;

[0034] 51. Connector; 52. Installation port; 531. Insertion interface; 532. Fixed plate; 533. Fixed groove; 534. Auxiliary plate. Detailed implementation manner

[0035] The following further elaborates on this application in conjunction with the accompanying drawings.

[0036] Please refer to Figure 1 And Figure 2 , an injection pump for facilitating the replacement of a syringe barrel disclosed in an embodiment of this application, includes a mounting frame 1. A mounting hole is provided on the mounting frame 1. A driver 2 is fixedly installed on one side of the mounting frame 1. A receiving box 3 is fixedly installed on the side of the mounting frame 1 away from the driver 2. An avoidance hole 31 is provided on the side of the receiving box 3 away from the driver 2. The output end of the driver 2 passes through the receiving box 3 and is coaxial with the avoidance hole 31. A piston 41 is fixedly installed at the output end of the driver 2. A connector 51 is fixedly installed on the side of the receiving box 3 away from the driver 2. The avoidance hole 31 penetrates through the connector 51. An installation port 52 is provided on the side of the connector 51 away from the receiving box 3. An insertion interface 531 is provided on the side of the connector 51. A fixed plate 532 is slidably inserted into the insertion interface 531. A syringe barrel 42 is inserted and installed in the installation port 52. An outer edge ring 421 is provided on the outer side of the upper end of the syringe barrel 42. Among them, when the syringe barrel 42 is inserted and installed in the installation port 52, after the fixed plate 532 is inserted into the insertion interface 531, it is located below the outer edge ring 421.

[0037] Specifically, a receiving box 3 is provided on the side of the mounting frame 1 away from the driver 2. The syringe barrel 42 is inserted and installed at one end of the receiving box 3, and the position of the outer edge ring 421 is restricted and fixed by inserting the fixed plate 532. The receiving box 3 provides an avoidance position for the piston 41, facilitating the removal of the syringe barrel 42.

[0038] In this way, through the inserted and installed syringe barrel 42 and the fixed plate 532, the disassembly and assembly process of the syringe barrel 42 is simplified, making the replacement of the syringe barrel 42 more convenient.

[0039] In some feasible ways, the mounting frame 1 is in the shape of an L-shaped bent plate, used to install the injection pump in the use position. For the convenience of installation, a mounting hole is provided for bolt connection. The receiving box 3 is in the shape of a rectangular box and is connected to the mounting frame 1 by bolts. The avoidance hole 31 is a circular hole with a diameter not less than the diameter of the piston 41. The height of the receiving box 3 is not less than the length of the piston 41, so as to facilitate the complete accommodation of the piston 41. The connector 51 is in the shape of a rectangular box. After the syringe barrel 42 is inserted from the installation port 52, the outer edge ring 421 fits against the inner top of the connector 51. The fixed plate 532 is inserted from the insertion interface 531 to restrict the axial movement of the outer edge ring 421.

[0040] In some feasible embodiments, in order to facilitate replacement of the piston 41 , the piston 41 and the driver 2 may be detachably connected, and the piston 41 and the driver 2 may be threadedly connected.

[0041] In some feasible embodiments, the driver 2 is a through-type stepper motor. Compared with other linear drive mechanisms, a through-type stepper motor based on a stepper motor is easier to control accurately.

[0042] Furthermore, the mounting frame 1 is fixedly connected with a sliding groove rail 11 , and a sliding block 12 is slidably mounted on the sliding groove rail 11 , and the sliding block 12 is fixedly connected to an end of the output shaft of the driver 2 away from the piston 41 .

[0043] It should be understood that by providing the sliding groove 11, the end of the output shaft of the driver 2 away from the piston 41 slides on the sliding groove 11, thereby reducing the radial swing of the output end and increasing the service life of the output screw.

[0044] As a specific embodiment of a syringe pump that is easy to replace a syringe barrel, the application provides a fixing groove 533 on the upper side of the plug-in port 531 , and the outer edge ring 421 is engaged with the fixing groove 533 .

[0045] Overall, by setting The fixing groove 533 allows the outer ring 421 to be engaged with the fixing groove 533, thereby fixing the outer ring 421 on the radial plane and reducing the radial shaking of the injection barrel 42 when in use.

[0046] In some feasible embodiments, the shape of the fixing groove 533 is set according to the shape of the outer ring 421 .

[0047] Furthermore, an auxiliary plate 534 is slidably installed inside the plug port 531 , and semicircular grooves are provided on one side of the auxiliary plate 534 and the fixed plate 532 . After installation, the syringe 42 is located in the semicircular grooves of the auxiliary plate 534 and the fixed plate 532 .

[0048] It should be understood that by providing the auxiliary plate 534, support is formed on the side of the outer ring 421 away from the fixed plate 532, so that the force on the outer ring 421 is balanced, thereby reducing the shaking of the injection barrel 42 during use.

[0049] Furthermore, a magnet is disposed at one end of the auxiliary plate 534 and the fixing plate 532 which are close to each other.

[0050] It should be understood that by providing a magnet, after the fixing plate 532 is inserted, the auxiliary plate 534 is attracted by the magnet, thereby facilitating support for the outer edge ring 421 .

[0051] Furthermore, the magnetic poles of the magnets at both ends of the auxiliary plate 534 and the fixed plate 532 are different.

[0052] It should be understood that the magnetic poles of the magnets at both ends of the auxiliary plate 534 and the fixing plate 532 are different. That is, the magnetic poles of the end of the fixing plate 532 close to the auxiliary plate 534 are S and N. Correspondingly, the magnetic poles of the auxiliary plate 534 are N and S. They are attracted when the fixing plate 532 is inserted. When it is necessary to take out the syringe 42, the fixing plate 532 is pulled out, turned over and inserted into the insertion port 531. At this time, the magnetic poles of the auxiliary plate 534 and the fixing plate 532 close to each other are the same, and like poles repel each other, so that the auxiliary plate 534 moves away from the syringe 42, thus facilitating the removal of the syringe 42.

[0053] In some feasible ways, in order to reduce the damage to the magnet caused by the impact force during the magnet attraction, a buffer pad is installed on the side of the magnet of the fixing plate 532 close to the auxiliary plate 534.

[0054] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An injection pump facilitating syringe replacement, characterized in that, Comprising: A mounting bracket (1) with mounting holes formed therein; A driver (2) fixedly mounted on one side of the mounting bracket (1); A receiving box (3) fixedly mounted on the side of the mounting bracket (1) away from the driver (2); An avoidance hole (31) formed on the side of the receiving box (3) away from the driver (2), and the output end of the driver (2) penetrates through the receiving box (3) and is coaxial with the avoidance hole (31); A piston (41) fixedly mounted on the output end of the driver (2); A connecting member (51) fixedly mounted on the side of the receiving box (3) away from the driver (2), and the avoidance hole (31) penetrates through the connecting member (51); An installation opening (52) formed on the side of the connecting member (51) away from the receiving box (3); An insertion interface (531) formed on the side surface of the connecting member (51), and a fixing plate (532) is slidably inserted into the insertion interface (531); An injection cylinder (42) with an outer edge ring (421) provided on the outer side of the upper end thereof, and the injection cylinder (42) is inserted and mounted in the installation opening (52); Wherein, when the injection cylinder (42) is inserted and mounted in the installation opening (52), after the fixing plate (532) is inserted into the insertion interface (531), it is located below the outer edge ring (421).

2. The syringe pump according to claim 1, which is convenient for replacing a syringe barrel, is characterized in that: The driver (2) is a through-type stepping motor.

3. The syringe pump according to claim 1, which is convenient for replacing a syringe barrel, is characterized in that: A fixing groove (533) is formed on the upper side of the insertion interface (531), and the outer edge ring (421) is fitted with the fixing groove (533).

4. The syringe pump according to claim 3, characterized in that: An auxiliary plate (534) is slidably mounted inside the insertion interface (531), and semi-circular grooves are formed on one side of both the auxiliary plate (534) and the fixing plate (532). After installation, the injection cylinder (42) is located in the semi-circular grooves of the auxiliary plate (534) and the fixing plate (532).

5. The syringe pump according to claim 4, characterized in that: Magnets are provided at the ends of the auxiliary plate (534) and the fixing plate (532) that are close to each other.

6. The syringe pump according to claim 5, wherein: The magnetic poles of the magnets at both ends of the auxiliary plate (534) and the fixing plate (532) are different.

7. The syringe pump according to claim 1, which is convenient for replacing a syringe barrel, is characterized in that: The piston (41) is detachably connected to the driver (2).

8. An injection pump facilitating the replacement of a syringe barrel according to claim 6, characterized in that: A buffer pad is mounted on the side of the magnet of the fixing plate (532) close to the auxiliary plate (534).

9. The syringe pump according to claim 2, wherein: The mounting bracket (1) is fixedly connected with a sliding groove track (11), a sliding block (12) is slidably mounted on the sliding groove track (11), and the sliding block (12) is fixedly connected to the end of the output shaft of the driver (2) away from the piston (41).

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