Precise split type injection pump

Abstract

The invention discloses a precise split type injection pump, and relates to the field of injectors, the precise split type injection pump comprises a controller host, a control display screen, an output joint, an execution pump body, an input joint and a conduction circuit, the control display screen is fixedly installed on the top surface of the controller host, the output joint is fixedly installed on one side of the controller host, and the input joint is fixedly installed on the other side of the controller host. The input connector is fixedly installed at the rear end of the execution pump body. According to the precise split type injection pump, an injector is evenly wrapped and positioned, deformation generated during injection of the injector is prevented, injection errors are reduced, injection use is more accurate, installation and use of injectors with different diameters are facilitated, the situation that errors are too large when the injectors with different diameters are used is prevented, and the injection efficiency is improved. And uniform force application on the upper side and the lower side of the push handle of the injector is realized, the deformation of the push handle caused when the driving block is moved to push and pull the injector is prevented, the injection precision is further improved, the volume in the injector is marked, and the volume in the injector is accurately detected in real time.

Description

Technical Field

[0001] The invention relates to the field of syringes, and in particular to a precision split-type syringe pump. Background Art

[0002] The split syringe pump is a medical device that transfers liquids through a precision mechanical drive syringe piston. It adopts a split design and is mainly composed of a controller and an actuator pump body. The controller plays the role of dose injection control, and the actuator pump body is equipped with a syringe to perform the injection task. It is widely used in clinical medicine.

[0003] The Chinese patent application number "CN201420585414.0" discloses "a novel split-type syringe pump, comprising a bracket, a driving device and a syringe fixed on the bracket, wherein the driving device is connected to a screw arranged in parallel with the syringe, and a guide rod arranged in parallel with the screw is also fixed on the bracket, and also comprises a sliding block, wherein the sliding block is provided with two through holes, and the sliding block is simultaneously mounted on the screw and the guide rod through the two through holes". Although it can play the role of "the device is provided with a guide rod, which inhibits the rotation or shaking of the sliding block and avoids the tilting of the syringe propulsion rod, thereby ensuring the smooth suction and drainage of the syringe pump, and the syringe pump is also provided with a control device, by which the rotation speed of the driving device can be adjusted to accurately control the suction or drainage", the precision split-type syringe pump is in During use, when the syringe is placed and installed, the handle of the syringe is usually clamped to achieve the positioning of the syringe, and the tube part of the syringe is suspended. However, when the syringe is injected with liquid, the handle is made of plastic, so the handle will deform after being subjected to force, which in turn causes the deformation and displacement of the syringe body, increases the injection error, and makes it impossible to perform accurate injection. At the same time, the push handle of the syringe is also positioned by clamping. When the execution pump body pushes the push handle of the syringe, the push handle is unevenly stressed up and down, which also causes the injection error of the syringe to increase, further increasing the injection error. In addition, syringes of different diameters have different center positions when installed, which also causes excessive errors when using syringes of different diameters. It is also impossible to detect the internal capacity of the syringe in real time, which brings inconvenience to the use of injections. Summary of the invention

[0004] The main purpose of the present invention is to provide a precision split injection pump, which can effectively solve the technical problems raised by the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A precision split injection pump comprises a controller host, a control display screen, an output connector, an actuator pump body, an input connector and a conduction line, wherein the control display screen is fixedly mounted on the top surface of the controller host, the output connector is fixedly mounted on one side of the controller host, the input connector is fixedly mounted on the rear end of the actuator pump body, the conduction line is fixedly mounted between the output connector and the input connector, a movable groove is provided on the top surface of the actuator pump body, a driving structure matched with the movable groove is fixedly mounted on the upper end of the actuator pump body, a mounting support block is fixedly mounted on the front of the upper end of the actuator pump body, a bottom sleeve is fixedly mounted on the upper end of the mounting support block, a top sleeve is movably mounted on the upper end of the bottom sleeve through a rotating shaft, a plurality of positioning tube structures are fixedly mounted on the inner sides of the bottom sleeve and the top sleeve, a photosensitive receiver is fixedly mounted on the inner side of the bottom sleeve located in the middle of the plurality of positioning tube structures, an infrared transmitter is fixedly mounted on the inner side of the top sleeve located in the middle of the plurality of positioning tube structures, and a syringe is placed between the bottom sleeve and the top sleeve.

[0007] As a further solution of the present invention, the actuator pump body is located on one side of the controller host and arranged parallel to it, and the two ends of the conduction line are connected to the output connector and the input connector through a socket.

[0008] As a further solution of the present invention, the driving structure includes a mobile driving block, a slot mounting block, a fixed slot, a push handle fixing frame and an installation positioning frame. The mobile driving block is movably mounted on the upper end of the actuator pump body and is adapted to be connected with the mobile slot. The slot mounting block is integrally formed at the upper end of the mobile driving block. The fixed slot is opened on the top surface of the slot mounting block. The push handle fixing frame is inserted into the fixed slot. The installation positioning frame is fixedly mounted on the front end of the mobile driving block.

[0009] As a further solution of the present invention, the movable driving block is located behind the bottom sleeve, the push handle of the syringe is fitted with the front end of the movable driving block, the push handle fixing frame is sleeved in front of the push handle of the syringe, and the bottom of the push handle fixing frame is inserted into the inner side of the mounting positioning frame.

[0010] As a further solution of the present invention, the bottom sleeve and the top sleeve are both arranged in a semicircular shape, and the top sleeve rotates around one side of the bottom sleeve.

[0011] As a further solution of the present invention, the positioning tube structure includes a T-shaped mounting block, a sleeve tube, a telescopic positioning tube, a sealing moving block and a downward pressure spring. The T-shaped mounting block is inserted into the inner walls of the bottom sleeve and the top sleeve, the sleeve tube is fixedly installed on the opposite installation side of the T-shaped mounting block, the telescopic positioning tube is movably installed at one end of the sleeve tube away from the T-shaped mounting block, the sealing moving block is movably installed inside the sleeve tube, and the downward pressure spring is fixedly installed at one end of the sealing moving block.

[0012] As a further solution of the present invention, the sleeve tube is fixedly connected to the interior of the bottom sleeve and the top sleeve, the telescopic positioning tube is inserted into the sleeve tube, the end of the downward pressure spring away from the sealing moving block is connected to the telescopic positioning tube, and the end of the telescopic positioning tube away from the sleeve tube is pressed against the outside of the syringe.

[0013] As a further solution of the present invention, a trachea joint is fixedly installed on one side of the bottom sleeve and the top sleeve, and two locking handles are movably installed on the other side of the top sleeve. The trachea joint is connected to the T-shaped mounting block through the bottom sleeve and the top sleeve.

[0014] As a further solution of the present invention, conductive wires are fixedly installed at the front ends of the photosensitive receiver and the infrared transmitter, and one end of the conductive wire away from the photosensitive receiver and the infrared transmitter is fixedly connected to the upper end of the actuator pump body. The photosensitive receiver is located above the infrared transmitter, and the light emitting end of the infrared transmitter faces the light receiving end of the photosensitive receiver.

[0015] As a further solution of the present invention, the upper end of the actuator pump body is located behind the bottom sleeve and is fixedly installed with a handle positioning frame, and the upper end of the actuator pump body is located in front of the bottom sleeve and is fixedly installed with a display frame, the handle of the syringe is inserted into the handle positioning frame, and the front end of the syringe is placed in the display frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when the syringe is placed, the top sleeve and the bottom sleeve are combined and sleeved on the outside of the syringe, and after ventilation, the telescopic positioning tube is extended outward and pressed against the outside of the syringe, so that a plurality of telescopic positioning tubes are wrapped around the outside of the syringe and evenly clamped and fixed to achieve the effect of positioning the syringe, and the uniform wrapping and positioning of the syringe prevents the deformation of the syringe during injection, reduces the injection error, and performs injection more accurately;

[0017] When the telescopic positioning tube is extended to clamp the syringe, the telescopic positioning tube uses the elastic expansion and contraction of the air pressure and the downward spring, so the telescopic positioning tube of the telescopic structure can fit and position syringes of different diameters, and the telescopic positioning tubes are arranged in a circle, so that syringes of different diameters are positioned at the same center, which not only facilitates the installation and use of syringes of different diameters, but also prevents excessive errors when using syringes of different diameters.

[0018] When the push handle of the syringe is connected to the mobile driving block, two push handle fixing frames are fitted on both sides of the front of the push handle of the syringe to make it fit and fix with the mobile driving block. Therefore, when the mobile driving block moves the push handle of the syringe forward and backward, the upper and lower sides of the push handle of the syringe are uniformly applied force, which prevents the push handle from being deformed when the mobile driving block pushes and pulls the syringe, and further improves the injection accuracy.

[0019] When the top sleeve and the bottom sleeve are put on the outside of the syringe, the infrared transmitter is used to emit a long strip of infrared light downward. The light passes through the syringe and the liquid inside it, and is refracted to the photosensitive receiver, so that the photosensitive receiver receives all the signals, indicating that the syringe capacity is full. When the push handle of the syringe pushes the liquid out, the push handle of the syringe will block part of the infrared light, reducing the light received by the photosensitive receiver, and then receiving the corresponding signal to mark the capacity in the syringe, thereby accurately detecting the capacity in the syringe in real time, making it more convenient to use for injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a precision split-type injection pump of the present invention;

[0021] Figure 2 It is an enlarged view of the actuator pump body in a precision split-type injection pump of the present invention;

[0022] Figure 3 This is an open view of a top sleeve in a precision split-type injection pump of the present invention;

[0023] Figure 4 This is a disassembled diagram of a driving structure in a precision split-type injection pump of the present invention;

[0024] Figure 5 This is a structural diagram of a precision split-type injection pump of the present invention after the syringe is removed;

[0025] Figure 6 This is a structural diagram of a bottom sleeve and a top sleeve in a precision split-type injection pump of the present invention;

[0026] Figure 7 It is a sectional view of a bottom sleeve and a top sleeve in a precision split-type injection pump of the present invention;

[0027] Figure 8 This is a front view of a bottom sleeve and a top sleeve in a precision split-type injection pump of the present invention;

[0028] Fig. 9 This is a sectional diagram of a positioning tube structure in a precision split-type injection pump of the present invention.

[0029] In the figure: 1. controller host; 2. control display screen; 3. output connector; 4. actuator pump body; 5. input connector; 6. conduction line; 7. moving slot; 8. drive structure; 9. moving drive block; 10. slot mounting block; 11. fixed slot; 12. push handle fixing frame; 13. installation positioning frame; 14. installation support block; 15. bottom sleeve; 16. top sleeve; 17. air pipe joint; 18. locking handle; 19. positioning tube structure; 20. T-shaped mounting block; 21. sleeve tube; 22. telescopic positioning tube; 23. sealing moving block; 24. downward pressure spring; 25. photosensitive receiver; 26. infrared transmitter; 27. conductive wire; 28. handle positioning frame; 29. ​​display rack; 30. syringe. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figure 1-Figure 9 As shown, a precision split-type injection pump comprises a controller mainframe 1, a control display screen 2, an output connector 3, an actuator pump body 4, an input connector 5 and a transmission line 6, wherein the control display screen 2 is fixedly mounted on the top surface of the controller mainframe 1, the output connector 3 is fixedly mounted on one side of the controller mainframe 1, the input connector 5 is fixedly mounted on the rear end of the actuator pump body 4, the transmission line 6 is fixedly mounted between the output connector 3 and the input connector 5, a moving groove 7 is provided on the top surface of the actuator pump body 4, a driving structure 8 adapted to the moving groove 7 is fixedly mounted on the upper end of the actuator pump body 4, and the upper A mounting support block 14 is fixedly installed in front of the end, a bottom sleeve 15 is fixedly installed on the upper end of the mounting support block 14, a top sleeve 16 is movably installed on the upper end of the bottom sleeve 15 through a rotating shaft, a plurality of positioning tube structures 19 are fixedly installed on the inner sides of the bottom sleeve 15 and the top sleeve 16, a photosensitive receiver 25 is fixedly installed on the inner side of the bottom sleeve 15 in the middle of the plurality of positioning tube structures 19, an infrared transmitter 26 is fixedly installed on the inner side of the top sleeve 16 in the middle of the plurality of positioning tube structures 19, and a syringe 30 is placed between the bottom sleeve 15 and the top sleeve 16.

[0032] In this embodiment, the execution pump body 4 is located on one side of the controller host 1 and is arranged parallel to it. The two ends of the conduction line 6 are connected to the output connector 3 and the input connector 5 through the socket, and the signal is transmitted between the execution pump body 4 and the controller host 1 through the conduction line 6.

[0033] In this embodiment, the driving structure 8 includes a mobile driving block 9, a slot mounting block 10, a fixed slot 11, a push handle fixing frame 12 and an installation positioning frame 13. The mobile driving block 9 is movably mounted on the upper end of the executing pump body 4 and is adapted to be connected with the mobile slot 7. The slot mounting block 10 is integrally formed at the upper end of the mobile driving block 9. The fixed slot 11 is opened on the top surface of the slot mounting block 10. The push handle fixing frame 12 is inserted into the fixed slot 11. The installation positioning frame 13 is fixedly mounted on the front end of the mobile driving block 9. The motor in the executing pump body 4 drives the mobile driving block 9 to move forward and backward.

[0034] In this embodiment, the movable driving block 9 is located behind the bottom sleeve 15, the push handle of the syringe 30 is fitted with the front end of the movable driving block 9, the push handle fixing frame 12 is sleeved in front of the push handle of the syringe 30, and the bottom of the push handle fixing frame 12 is inserted into the inner side of the mounting positioning frame 13, and the push handle of the syringe 30 is positioned by the push handle fixing frame 12.

[0035] In this embodiment, the bottom sleeve 15 and the top sleeve 16 are both arranged in a semicircular shape, and the top sleeve 16 rotates around one side of the bottom sleeve 15 , so that the bottom sleeve 15 and the top sleeve 16 have the effect of wrapping the syringe 30 .

[0036] In this embodiment, the positioning tube structure 19 includes a T-shaped mounting block 20, a sleeve tube 21, a telescopic positioning tube 22, a sealing moving block 23 and a downward pressure spring 24. The T-shaped mounting block 20 is inserted into the inner walls of the bottom sleeve 15 and the top sleeve 16. The sleeve tube 21 is fixedly installed on the opposite side of the T-shaped mounting block 20. The telescopic positioning tube 22 is movably installed at one end of the sleeve tube 21 away from the T-shaped mounting block 20. The sealing moving block 23 is movably installed inside the sleeve tube 21. The downward pressure spring 24 is fixedly installed at one end of the sealing moving block 23. A single T-shaped mounting block 20 is installed with multiple sleeve tubes 21, and the multiple T-shaped mounting blocks 20 are arranged in a circle around the center of the bottom sleeve 15 and the top sleeve 16.

[0037] In this embodiment, the sleeve tube 21 is fixedly connected to the inside of the bottom sleeve 15 and the top sleeve 16, the telescopic positioning tube 22 is inserted into the sleeve tube 21, the end of the downward pressure spring 24 away from the sealing moving block 23 is connected to the telescopic positioning tube 22, and the end of the telescopic positioning tube 22 away from the sleeve tube 21 is pressed against the outside of the syringe 30, and multiple telescopic positioning tubes 22 are pressed against the outside of the syringe 30 to clamp it.

[0038] In this embodiment, an air pipe joint 17 is fixedly installed on one side of the bottom sleeve 15 and the top sleeve 16, and two locking handles 18 are movably installed on the other side of the top sleeve 16. The air pipe joint 17 is connected to the T-shaped mounting block 20 through the bottom sleeve 15 and the top sleeve 16. The air pipe joint 17 serves to transport air into the bottom sleeve 15 and the top sleeve 16, and the locking handles 18 serve to fix the bottom sleeve 15 and the top sleeve 16.

[0039] In this embodiment, a conductive wire 27 is fixedly installed at the front end of the photosensitive receiver 25 and the infrared transmitter 26. The end of the conductive wire 27 away from the photosensitive receiver 25 and the infrared transmitter 26 is fixedly connected to the upper end of the actuator pump body 4. The photosensitive receiver 25 is located above the infrared transmitter 26. The light emitting end of the infrared transmitter 26 faces the light receiving end of the photosensitive receiver 25. The infrared transmitter 26 emits infrared light which is received by the photosensitive receiver 25.

[0040] In this embodiment, the upper end of the actuator pump body 4 is located behind the bottom sleeve 15 and is fixedly installed with a handle positioning frame 28. The upper end of the actuator pump body 4 is located in front of the bottom sleeve 15 and is fixedly installed with a display frame 29. The handle of the syringe 30 is inserted into the handle positioning frame 28, and the front end of the syringe 30 is placed in the display frame 29. The handle positioning frame 28 and the display frame 29 have the effect of temporarily placing the syringe 30.

[0041] It should be noted that the present invention is a precision split-type injection pump. When in use, the controller host 1 is the host part, and the control display screen 2 is used to control the injection dosage and switch. The output connector 3 on the controller host 1 is installed with a conduction line 6, and the conduction line 6 is then connected to the input connector 5 on the actuator pump body 4, so that the controller host 1 is connected to the actuator pump body 4, and the number of actuator pump bodies 4 can be increased or decreased according to the use requirements. Then, the syringe 30 is placed in the positioning frame 28 and the placement frame 29, and the handle of the syringe 30 is inserted into the inner side of the handle positioning frame 28 to position the syringe 30. The push handle of the syringe 30 fits with the front end of the moving drive block 9 and is positioned by the push handle fixing frame 12. Therefore, when the controller host 1 controls the actuator pump body 4 to run, the moving drive block 9 moves forward to push the push handle of the syringe 30, so that the syringe 30 is injected, and a precise quantitative injection is performed according to the movement amount of the moving drive block 9;

[0042] When the syringe 30 is placed, the top sleeve 16 and the bottom sleeve 15 are first in a separated state, so the syringe 30 will be placed on the inner side of the bottom sleeve 15, and then the top sleeve 16 and the bottom sleeve 15 are merged, and the cylinder solenoid valve is connected by the air pipe joint 17, so that high-pressure air is input into the top sleeve 16 and the bottom sleeve 15 through the air pipe joint 17, and the air then enters the T-shaped mounting block 20 and the sleeve tube 21 along the top sleeve 16 and the bottom sleeve 15, so the air pushes the sealing moving block 23 to move to one end in the sleeve tube 21, and then the downward pressure spring 24 on the sealing moving block 23 squeezes the telescopic positioning tube 22, so that the telescopic positioning tube 22 extends outward and moves, and finally the telescopic positioning tube 22 is pressed against the outside of the syringe 30, and is firmly fitted with the syringe 30 by using the air pressure and the elasticity of the downward pressure spring 24, so that multiple telescopic positioning tubes 22 are wrapped around the outside of the syringe 30 and evenly clamped and fixed, so as to achieve the effect of positioning the syringe 30;

[0043] When the push handle of the syringe 30 is connected to the mobile driving block 9, the push handle fixing frame 12 is first separated from the fixing slot 11, and then the push handle fixing frame 12 is inserted into the fixing slot 11 from top to bottom, and at the same time, the bottom of the push handle fixing frame 12 is inserted into the installation positioning frame 13, so that the two push handle fixing frames 12 are attached to the front sides of the push handle of the syringe 30 to make it attached and fixed to the mobile driving block 9, so that when the mobile driving block 9 moves the push handle of the syringe 30 back and forth, uniform force is applied to the upper and lower sides of the push handle of the syringe 30;

[0044] When the top sleeve 16 and the bottom sleeve 15 are sleeved on the outside of the syringe 30, the photosensitive receiver 25 is located below the syringe 30, and the infrared transmitter 26 is located above the syringe 30. The light emitting end of the infrared transmitter 26 is in the shape of a long strip, and thus emits a long strip of infrared light downward. The light passes through the syringe 30 and the liquid therein, and is refracted to the photosensitive receiver 25, so that the photosensitive receiver 25 receives all the signals, indicating that the capacity of the syringe 30 is full. When the push handle of the syringe 30 pushes the liquid out, the push handle of the syringe 30 will block part of the infrared light, so that the light received by the photosensitive receiver 25 is reduced, and then the corresponding signal is received to mark the capacity in the syringe 30.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A precision split-type injection pump, characterized in that: The invention comprises a controller main body (1), a control display screen (2), an output connector (3), an actuator pump body (4), an input connector (5) and a transmission line (6), wherein the control display screen (2) is fixedly mounted on the top surface of the controller main body (1), the output connector (3) is fixedly mounted on one side of the controller main body (1), the input connector (5) is fixedly mounted at the rear end of the actuator pump body (4), and the transmission line (6) is fixedly mounted between the output connector (3) and the input connector (5), and is characterized in that: a movable groove (7) is provided on the top surface of the actuator pump body (4), a driving structure (8) adapted to the movable groove (7) is fixedly mounted on the upper end of the actuator pump body (4), and the actuator pump body (4) is provided with a plurality of movable grooves (7). A mounting support block (14) is fixedly installed at the front of the upper end, a bottom sleeve (15) is fixedly installed at the upper end of the mounting support block (14), a top sleeve (16) is movably installed at the upper end of the bottom sleeve (15) through a rotating shaft, a plurality of positioning tube structures (19) are fixedly installed on the inner sides of the bottom sleeve (15) and the top sleeve (16), a photosensitive receiver (25) is fixedly installed on the inner side of the bottom sleeve (15) in the middle of the plurality of positioning tube structures (19), an infrared transmitter (26) is fixedly installed on the inner side of the top sleeve (16) in the middle of the plurality of positioning tube structures (19), and a syringe (30) is placed between the bottom sleeve (15) and the top sleeve (16).

2. A precision split-type injection pump according to claim 1, characterized in that: The actuator pump body (4) is located on one side of the controller main unit (1) and is arranged in parallel therewith, and the two ends of the conduction line (6) are connected to the output connector (3) and the input connector (5) through a socket.

3. A precision split-type injection pump according to claim 1, characterized in that: The driving structure (8) comprises a mobile driving block (9), a slot mounting block (10), a fixed slot (11), a push handle fixing frame (12) and a mounting positioning frame (13); the mobile driving block (9) is movably mounted on the upper end of the actuator pump body (4) and is adaptively connected to the mobile slot (7); the slot mounting block (10) is integrally formed on the upper end of the mobile driving block (9); the fixed slot (11) is provided on the top surface of the slot mounting block (10); the push handle fixing frame (12) is inserted into the fixed slot (11); and the mounting positioning frame (13) is fixedly mounted on the front end of the mobile driving block (9).

4. A precision split-type injection pump according to claim 3, characterized in that: The movable driving block (9) is located behind the bottom sleeve (15), the push handle of the syringe (30) is fitted with the front end of the movable driving block (9), the push handle fixing frame (12) is sleeved in front of the push handle of the syringe (30), and the bottom of the push handle fixing frame (12) is inserted into the inner side of the installation positioning frame (13).

5. A precision split-type injection pump according to claim 1, characterized in that: The bottom sleeve (15) and the top sleeve (16) are both arranged in a semicircular shape, and the top sleeve (16) rotates around one side of the bottom sleeve (15).

6. A precision split-type injection pump according to claim 1, characterized in that: The positioning tube structure (19) comprises a T-shaped mounting block (20), a sleeve tube (21), a telescopic positioning tube (22), a sealing moving block (23) and a downward pressure spring (24); the T-shaped mounting block (20) is inserted into the inner walls of the bottom sleeve (15) and the top sleeve (16); the sleeve tube (21) is fixedly mounted on the opposite mounting surface of the T-shaped mounting block (20); the telescopic positioning tube (22) is movably mounted on one end of the sleeve tube (21) away from the T-shaped mounting block (20); the sealing moving block (23) is movably mounted inside the sleeve tube (21); and the downward pressure spring (24) is fixedly mounted on one end of the sealing moving block (23).

7. A precision split-type injection pump according to claim 6, characterized in that: The sleeve tube (21) is fixedly connected to the inside of the bottom sleeve (15) and the top sleeve (16); the telescopic positioning tube (22) is inserted into the sleeve tube (21); one end of the downward pressure spring (24) away from the sealing moving block (23) is connected to the telescopic positioning tube (22); and one end of the telescopic positioning tube (22) away from the sleeve tube (21) is pressed against the outside of the syringe (30).

8. A precision split-type injection pump according to claim 6, characterized in that: An air pipe joint (17) is fixedly mounted on one side of the bottom sleeve (15) and the top sleeve (16), and two locking handles (18) are movably mounted on the other side of the top sleeve (16). The air pipe joint (17) is connected to a T-shaped mounting block (20) through the bottom sleeve (15) and the top sleeve (16).

9. A precision split-type injection pump according to claim 1, characterized in that: The front ends of the photosensitive receiver (25) and the infrared transmitter (26) are both fixedly mounted with a conductive wire (27), one end of the conductive wire (27) away from the photosensitive receiver (25) and the infrared transmitter (26) is fixedly connected to the upper end of the actuator pump body (4), the photosensitive receiver (25) is located above the infrared transmitter (26), and the light emitting end of the infrared transmitter (26) faces the light receiving end of the photosensitive receiver (25).

10. A precision split-type injection pump according to claim 1, characterized in that: The upper end of the actuator pump body (4) is located behind the bottom sleeve (15) and is fixedly mounted with a handle positioning frame (28); the upper end of the actuator pump body (4) is located in front of the bottom sleeve (15) and is fixedly mounted with a placement frame (29); the handle of the syringe (30) is inserted into the handle positioning frame (28), and the front end of the syringe (30) is placed in the placement frame (29).

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