Injection pump capable of being disassembled and assembled by single hand and disassembling and assembling method

Abstract

The invention discloses an injection pump capable of being disassembled and assembled by one hand and a disassembling and assembling method. The injection pump comprises a mounting base, an injector fixing structure, a pushing and injecting structure, an injector, an organ protective cover and a magnetic attraction external waterproof cover. The whole mounting base is in a cuboid shape, a sinking groove with a U-shaped cross section is formed in the right side of the surface of the mounting base, injectors of different specifications are mounted in the sinking groove, notch grooves for limiting the injectors of different specifications to move on the X axis are formed in the left side of the sinking groove, and a square sinking groove is formed in the left side of the notch groove. The bottom of the square sinking groove is provided with a long-strip-shaped opening allowing an upper pressing plate and a lower pressing plate of the injection structure to stretch out. Four stand columns embedded with circular magnets are arranged around the square sinking groove. The plane around the square sinking groove is slightly lower than the surface of the base, a circle of sealing groove for installing a foaming sealing ring is further formed in the plane, and four installation columns for fixing a pushing and injecting structure are further arranged around the square sinking groove. The scheme has the characteristic of convenient installation and also has dustproof and waterproof performance.

Description

Technical Field

[0001] The invention relates to the technical field of injection pumps, and in particular to an injection pump that can be disassembled and assembled by one hand and a disassembly and assembly method. Background Art

[0002] A syringe pump is a special pump commonly used in the fields of biology and medicine for micro-dosing. The core of a syringe pump is generally a syringe. The pump body of the syringe pump includes a syringe barrel fixing structure, a syringe piston connecting rod pushing structure, a syringe piston anti-siphon structure, and a drive structure and a motor inside the syringe pump.

[0003] Due to the existence of the anti-siphon structure and the syringe fixing structure, the installation of the syringe is relatively cumbersome. Due to structural limitations, ordinary syringe pumps are not waterproof and dustproof, but their working environment in the biological and medical fields requires them to be waterproof and dustproof.

[0004] Therefore, it is necessary to design a syringe pump that is easy to install and has dust and water resistance. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a syringe pump that can be disassembled and assembled by one hand and a disassembly and assembly method.

[0006] The present invention is implemented by adopting the following technical scheme: a single-handed disassembled injection pump comprises a mounting base, a syringe fixing structure, a push injection structure, a syringe, an accordion protective cover and a magnetic external waterproof cover; the mounting base is in the shape of a rectangular parallelepiped as a whole, a sink groove with a U-shaped cross section is arranged on the right side of the surface for the installation of syringes of different specifications, a notch groove is arranged on the left side of the sink groove for limiting the displacement of syringes of different specifications in the X-axis, a square sink groove is arranged on the left side of the notch groove, a long strip opening is arranged at the bottom of the square sink groove for the upper and lower pressure plates of the push injection structure to extend out, and four columns inlaid with circular magnets are arranged around the square sink groove; the plane around the square sink groove is slightly lower than the surface of the base, and a circle of sealing grooves for installing a foam sealing ring is also arranged on the plane, and four installation columns for fixing the push injection structure are also arranged around the square sink groove.

[0007] Specifically, the syringe fixing structure is of a spring clip snap-on type, including spring clips respectively installed above and below the sink, to limit the displacement of syringes of different specifications on the Y axis.

[0008] Specifically, the syringe fixing structure includes a limiting rod compressed by a spring inside the sink, the spring is compressed between the limiting rod and a limiting ring, the limiting ring is fixed by a limiting bottom plate, and the extending part of the limiting rod exceeds the surface of the sink.

[0009] Specifically, a notch is provided at the upper and lower parts of the U-shaped sink respectively, into which the mounting part of the spring clip buckle-type syringe fixing structure is inserted for fixing.

[0010] Specifically, two holes are provided below the U-shaped sinking groove for the limit rod to extend out, and mounting holes are arranged around the groove to mount the limit bottom plate.

[0011] Specifically, the shape of the magnetic external waterproof cover is similar to the plane shape around the square sink. Four magnet mounting holes are arranged at positions corresponding to the magnets on the four pillars in the square sink. Circular magnets are installed in the magnet mounting holes to magnetically attract the magnets on the pillars. An outer square sink is also arranged in the middle position to avoid interference with the injection structure.

[0012] Specifically, the push injection structure is a screw-driven syringe anti-siphon structure, comprising a stepper motor, a transmission screw, two guide rods, a motor mounting seat, a transmission slider, a lower pressure plate, an upper pressure plate, a half nut, a limit switch, a spring baffle, a driven spur gear, a spur rack, a rack baffle, a spring fixing block, a dynamic sealing ring, a sealing ring baffle, a push injection pump cover and a transmission support; the motor mounting seat and the transmission support are T-shaped structures, which are respectively mounted on the mounting column at the central position behind the mounting base and the mounting column at the side position, opposite to each other, with two guide columns and a screw rod fixed horizontally in the middle; the stepper motor is mounted on the motor mounting seat, fixed to the screw rod with screws and passing through the motor mounting seat; the tail of the transmission screw rod is axially fixed to the transmission support, and the front end is covered with a dynamic sealing ring to form a sealing structure with the motor mounting seat in the radial direction; the dynamic sealing ring is axially fixed to the left and right by the motor mounting seat and the sealing ring baffle.

[0013] Specifically, a transmission slider is fixed on the two guide columns, a spring baffle is fixed under the transmission slider, a lower pressure plate is fixed by screws in the middle of the transmission slider, and a rotating shaft is installed under the lower pressure plate to pass through an upper pressure plate; a half nut meshing with the screw rod is connected to the rear of the upper pressure plate, a spring is fixed under the half nut to press the spring baffle below, and an optical axis with a larger width driven spur gear is installed in the middle lower part of the upper pressure plate; a guide groove extends from the bottom of the transmission slider to install a T-shaped rack baffle engaged with the driven spur gear to fix the top of the syringe push rod; a deep groove for placing a spur rack is opened under the motor mounting seat and the transmission support respectively, and a spring in a compressed state is supported under the two ends of the spur rack to make the spur rack tightly meshed with the gear above, and a spring fixing block respectively installed on the motor mounting seat and the transmission support is arranged under the spring; the limit switch is installed on the side of the motor mounting seat, and the injection pump cover is fixed on the motor mounting seat and the transmission support to tightly wrap the entire transmission structure.

[0014] Specifically, the accordion waterproof cover is two pieces of waterproof cloth material, wherein the left end of one piece is fixed to the left side of the long strip opening of the mounting base, and the right end is fixed to the left side of the upper pressure plate; the left end of the other piece of waterproof cloth is fixed to the right side of the rack baffle, and the right end is fixed to the right side of the long strip opening; the accordion waterproof cover flattens when stretched, and shrinks to become a rolling door pleat, and flattens and shrinks with the movement of the transmission slider.

[0015] A method for disassembling and assembling a syringe pump that can be disassembled and assembled by one hand, comprising: Remove the magnetic external waterproof cover, press the upper pressure plate upwards, manually move the transmission slider to the left, and release the upper pressure plate to reset the transmission structure; Use one hand to insert the syringe into the mounting base, use the push-injection structure to put it into the push-injection and anti-siphon structure, and use the syringe fixing structure to firmly fix it, and install the magnetic external waterproof cover in place; After starting the push injection pump, the syringe push rod is pushed to the right by the upper and lower pressure plates and the upper pressure plate. At the same time, the anti-siphon structure of the push injection structure is automatically locked. No siphoning will occur after the push injection is completed. After use, remove the magnetic external waterproof cover and disassemble the syringe.

[0016] The beneficial effects of the present invention are as follows: the present invention adds an accordion protective cover, an external waterproof cover and a motor shaft sealing ring on the basis of an ordinary injection pump, and designs an automatically locked siphon limit structure, which automatically releases the limit when opened, and has convenient installation characteristics and dustproof and waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a structural diagram of the installation base in an embodiment of the present invention; Figure 2 A detailed diagram of a sink in one embodiment of the present invention; Figure 3 A detailed view of a sink in another embodiment of the present invention; Figure 4 A diagram showing a syringe fixing structure in one embodiment of the present invention; Figure 5 This is a schematic diagram of a limiting rod in an embodiment of the present invention; Figure 6 This is a structural diagram of a magnetic external waterproof cover in an embodiment of the present invention; Figure 7This is a schematic diagram of a push injection structure in an embodiment of the present invention; Figure 8 A schematic diagram of each baffle of the push injection structure in one embodiment of the present invention; Fig. 9 This is a schematic diagram of the limit switch structure of the push injection structure in one embodiment of the present invention; Fig.10 It is a schematic diagram of a push pump cover of a push injection structure in one embodiment of the present invention; Fig.11 A schematic diagram of a syringe and a waterproof cover in one embodiment of the present invention; Fig.12 This is an overall structural diagram of the injection structure of the injection pump in one embodiment of the present invention; Among them, 1-mounting base, 2-syringe fixing structure, 3-injection structure, 4-syringe, 5-organ waterproof cover, 6-magnetic external waterproof cover; 101-sunk groove, 102-cut groove, 103-square sunken groove, 104-long strip opening, 105-column, 106-sealing groove, 107-mounting column, 108-cut, 109-hole, 110-mounting hole; 201-spring, 202-limiting rod, 203-limiting ring, 204-limiting bottom plate, 205-spring; 301-stepping motor, 302-transmission screw, 303-guide rod, 304-motor mounting seat, 305-transmission slider, 306-lower pressure plate, 307-upper pressure plate, 308-half nut, 309-limit switch, 310-spring baffle, 311-driven spur gear, 312-spur rack, 313-rack baffle, 314-spring fixing block, 315-dynamic sealing ring, 316-sealing ring baffle, 317-injection pump cover, 318-transmission support; 601-magnet installation hole, 602-external square groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] The following is combined with Figures 1 to 12, some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0022] The present invention provides a syringe pump that can be disassembled and assembled with one hand. The device comprises: a mounting base 1, a syringe fixing structure 2, a push injection structure 3, a syringe 4, an accordion protective cover 5, and a magnetic external waterproof cover 6.

[0023] like Figure 1 As shown, the mounting base 1 is in the shape of a rectangular parallelepiped as a whole, and the right side of the surface is a U-shaped sink groove 101, which can be used to install syringes 4 of different specifications. On the left side of the U-shaped sink groove, there is a cutout groove 102 with a UV-shaped cross section and a size slightly larger than the U-shaped sink groove. The cutout can limit the displacement of syringes of different specifications in the X-axis. The left side is a square sink groove 103, and the bottom of the sink groove has a long strip opening 104 for the upper and lower pressure plates of the push-in structure to extend; there are four columns 105 around the sink groove, and each column is inlaid with a circular magnet; the plane around the square sink groove is slightly lower than the surface of the base, and there is a circle of sealing grooves 106 on the plane, in which a foam sealing ring is installed, and the magnetic external waterproof cover 6 is magnetically attracted to the plane to compress the sealing ring to play a waterproof role. The rear of the mounting base is roughly a shell-drawing structure based on the surface structure, and there are four mounting columns 107 around the square sink groove to fix the push-in structure.

[0024] In one embodiment, the syringe fixing structure 2 is a spring clip buckle type structure, the spring clip 201 is a metal long thin sheet, using a metal with good ductility, one is installed above and below the syringe installation sink, which can limit the displacement of syringes of different specifications on the Y axis; on the basis of the syringe fixing structure 2 of this embodiment, there is a cutout 108 at the upper and lower parts of the U-shaped sink for the spring clip 201 buckle installation part to extend into for fixing, such as Figure 2 , 4 shown.

[0025] In another embodiment, the syringe fixing structure 2 is structured as a limit rod 202 or other structural limit block which is pressed by a spring 205 inside the sink, and the spring is compressed between the limit rod 202 and the limit ring 203, and the limit ring is fixed by a limit bottom plate 204. The extended portion of the limit rod exceeds the surface of the sink, and the syringe pushes the limit rod or the limit block away during installation. After the limit rod or the limit block is in place, it resets to limit the displacement of syringes of different specifications on the Y axis. On the basis of the syringe fixing structure 2 of this embodiment, two holes 109 are opened under the sink for the limit rod to extend, and there are mounting holes 110 around to install the limit bottom plate, such as Figure 3 , 5 shown.

[0026] In a preferred embodiment, the shape of the magnetic external waterproof cover 6 is similar to the plane shape around the square sink. A magnet installation hole 601 is set at a position corresponding to the magnets on the four pillars 105 in the square sink 103, and four circular magnets are installed to be magnetically attracted to it. There is an outer square sink 602 in the middle to avoid interference with the injection structure 3. Figure 6 shown.

[0027] In a preferred embodiment, Figure 7 , 8 As shown in Figures 9 and 10, the driving mode of the push injection structure 3 is screw drive, and the gear rack drive is used to form the syringe anti-siphon structure. The main components include a stepper motor 301, a transmission screw 302, two guide rods 303, a motor mounting seat 304, a transmission slider 305, a lower pressing plate 306, an upper pressing plate 307, a half nut 308, a limit switch 309, a spring baffle 310, a driven spur gear 311, a spur rack 312, a rack baffle 313, a spring fixing block 314, a dynamic seal 315, a seal baffle 316, and a push injection pump cover 317. The motor mounting seat 304 and the transmission support 318 are T-shaped structures, which are respectively mounted on the mounting column 107 at the central position behind the mounting base and the mounting column 107 at the side position, opposite to each other, and two guide columns 303 and a screw 302 are fixed horizontally in the middle. The stepper motor 301 is mounted on the motor mounting seat 304. The stepper motor shaft 301 and the lead screw 302 are fixed with screws and pass through the motor mounting seat 304. The tail of the lead screw 302 is axially fixed to the transmission support 318. A dynamic seal ring 315 is put on the front end of the lead screw 302 to form a sealing structure with the motor mounting seat 304 in the radial direction to prevent the liquid on the lead screw 302 from invading the motor. The dynamic seal ring 315 is fixed by the motor mounting seat 304 and the seal ring baffle 316 on the left and right in the axial direction. A transmission slider 305 is fixed on the two guide pillars 303, and the two guide pillars 303 respectively pass through the two guide holes of the transmission slider 305 so that it can only move axially. A spring baffle 310 is fixed below the transmission slider 305, and a lower pressure plate 306 is fixed with screws in the middle of the transmission slider 305, and a rotating shaft is installed below it and passes through an upper pressure plate 307 so that it can make circular motion. A half nut 308 is connected to the rear of the upper pressure plate, and the half nut is meshed with the screw rod 302. A spring is fixed below the half nut 308 to press against the spring baffle 310 below. The spring is in a compressed state so that the half nut 308 is tightly meshed with the upper screw rod 302, and the transmission slider 305 performs translational motion with the rotation of the screw rod 302; when the upper pressure plate 307 is pressed upward, the spring is compressed to separate the half nut 308 from the screw rod 302. At this time, the transmission slider 305 can be manually translated.

[0028] In this embodiment, there is an optical axis in the middle lower part of the upper pressing plate 307, on which a wide driven spur gear 311 is installed, and the gear is changed to a ratchet. A guide groove extends from the bottom of the transmission slide 305, in which a T-shaped rack bar 313 is installed to mesh with the gear 311 and move forward and backward with the rotation of the gear, playing the role of fixing the top of the push rod of the syringe 4. A deep groove is opened under the motor mounting seat 304 and the transmission support 318, in which a spur rack 312 is placed to limit its displacement in the X and Y directions. A spring in a compressed state is supported under each end of the rack to make the rack tightly mesh with the upper gear 311. Under the spring is a spring fixing block 314, which is respectively installed on the motor mounting seat 304 and the transmission support 318. In this structure, when the transmission slide 305 pushes the syringe, the gear drives the rack bar 313 to move in the opposite direction due to the rotation of the spur rack 312, so that it can lock the syringe. 4. At the top of the push rod, when locked, the gear bar 313 no longer moves and the gear 311 no longer rotates. The spur rack 312 below will move downward under the action of the ratchet 311, so that the spur rack 312 and the gear 311 no longer mesh, and the spring resets it, so that the gear 311 is always applied with force but does not rotate, so that the rack bar 313 locks the push rod; when the push is finished, press the upper pressure plate 307 upward, the gear 311 is lifted, and the meshing state with the two racks 312313 is released, so that the transmission slide 305 can move freely. The limit switch 309 is installed on the side of the motor mounting seat 304. When the spring baffle 310 contacts, the limit is triggered, which can limit the transmission slide 305 here so that it will not interfere with the motor mounting seat 304. Finally, the push pump cover 317 is fixed on the motor mounting seat 304 and the transmission support 318 to tightly wrap the entire transmission structure.

[0029] In a preferred embodiment, Fig.11 As shown, the accordion waterproof cover 5 is made of two pieces of waterproof cloth material, the left end of one piece can be fixed to the left side of the long strip 104 opening of the mounting base 1 by Velcro, and the right side is fixed to the left side of the upper pressing plate 307; the left end of the other piece of waterproof cloth is fixed to the right side of the rack bar 313, and the right end is fixed to the right side of the long strip opening 104. The cloth strips are flattened when stretched, and contracted to be folded like a rolling door, and flattened and contracted with the movement of the transmission slider 305, playing a certain waterproof and shielding role.

[0030] like Fig.12As shown, when the present invention is in use, first remove the magnetic external waterproof cover 6, then press upward the upper pressure plate 307, manually move the transmission slider 305 to the left, release the upper pressure plate 307 to reset the transmission structure, and then the syringe 4 can be inserted into the mounting base 1 by one hand, and the injection rod can be easily placed in the injection and anti-siphon structure 3, and firmly fixed by the syringe fixing structure 2, and finally the magnetic external waterproof cover 6 is installed in place; after starting the injection pump, the syringe push rod is pushed to the right by the upper and lower pressure plates 306307, and the anti-siphon structure is automatically locked. See the above-mentioned injection structure for details. No siphoning will occur after the injection is completed. After use, remove the magnetic external waterproof cover 6 and the syringe can be easily removed.

[0031] Most existing syringe fixing structures are of the paddle type, that is, the paddle is rotated and removed when the syringe is installed, and the paddle is reset to block the syringe to fix it after the installation is completed. This process is relatively cumbersome and requires two-handed operation. The syringe fixing structure used in the present invention can disassemble and assemble the syringe with one hand. One structure is a spring clip buckle type, in which the spring clip is a long thin metal strip made of metal with good ductility. One is installed above and below the syringe installation groove respectively, which can limit the displacement of syringes of different specifications on the Y axis; the other structure is a limit rod or other structural limit block inside the groove is pressed by a spring, and the protruding part exceeds the surface of the groove. When the syringe is installed, the limit rod or limit block is pushed away. After it is in place, the limit rod or limit block is reset to limit the displacement of syringes of different specifications on the Y axis.

[0032] Regarding the above-mentioned waterproof and dustproof performance, the present invention adds an accordion protective cover, an external waterproof cover and a motor shaft sealing ring on the basis of an ordinary injection pump. The accordion waterproof cover is two pieces of cloth strips made of waterproof material, which are respectively installed on both sides of the push-injection structure transmission slider. The cloth strips are flattened when stretched, and contracted to form a rolling shutter door fold shape. They are flattened and contracted with the movement of the transmission slider, playing a certain waterproof and shielding role. The sink of the push-injection structure transmission slider is surrounded by four columns, and a circular magnet is embedded on each column; the plane around the square sink is slightly lower than the surface of the base, and there is a circle of sealing grooves on the plane, in which a foam sealing ring is installed, and the external waterproof cover is magnetically attracted to the plane to compress the sealing ring to play a waterproof role. The shape of the external waterproof cover is similar to the shape of the plane around the square sink, and four circular magnets are installed at positions corresponding to the magnets on the four columns in the square sink to be magnetically attracted to them.

[0033] The anti-siphon structure of ordinary injection pumps is mostly a buckle with a fixed distance. When installing the syringe, the buckle width is too small, which is not easy to install and a small siphon may still occur. The present invention designs an automatically locked siphon limit structure, and the limit is automatically released when it is opened. The main body of the structure is a gear rack transmission. There is an optical axis at the bottom of the transmission slider, and a driven spur gear with a larger width is installed on it. The gear is a ratchet. A guide groove extends from the bottom of the transmission slider, in which a T-shaped rack bar is installed to mesh with the gear and move forward and backward with the rotation of the gear, which plays a role in fixing the top of the syringe push rod. A deep groove is opened under the motor mounting seat and the transmission support respectively, in which a spur rack is placed to limit its displacement in the X and Y directions. A spring in a compressed state is supported under each end of the rack to make the rack tightly mesh with the gear above. Below the spring is a spring fixing block, which is respectively mounted on the motor mounting seat and the transmission support. In this structure, when the transmission slider pushes the syringe, the gear drives the rack baffle to move in the opposite direction due to the rotation of the spur rack, so that it can lock the top of the syringe push rod. When locked, the gear baffle no longer moves and the gear no longer rotates. The spur rack below will move downward under the action of the ratchet, so that the spur rack and the gear are no longer meshed, and the spring resets it to achieve a state where the gear is always applied with force but does not rotate, so that the rack baffle locks the injection rod; when the injection is completed, the upper pressure plate is pressed upward, the gear is lifted, and the meshing state with the two racks is released, so that the transmission slider can translate freely.

[0034] For the aforementioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily required by the present application.

[0035] The above embodiments describe the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and 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 changes and modifications made by those skilled in the art shall be within the scope of protection of the appended claims of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A syringe pump that can be disassembled and assembled with one hand, characterized in that: The invention comprises a mounting base (1), a syringe fixing structure (2), an injection structure (3), a syringe (4), an accordion protective cover (5) and a magnetic external waterproof cover (6); the mounting base (1) is in the shape of a rectangular parallelepiped as a whole, a sink groove (101) with a U-shaped cross section is arranged on the right side of the surface for mounting syringes (4) of different specifications, a notch groove (102) is arranged on the left side of the notch groove (102) for limiting the displacement of syringes (4) of different specifications on the X-axis, and a notch groove (102) is arranged on the left side of the notch groove (102). A square trough (103) is provided, and a long strip opening (104) is provided at the bottom of the square trough (103) for the upper and lower pressure plates of the push-in structure (3) to extend out. Four columns (105) inlaid with circular magnets are arranged around the square trough (103); a plane around the square trough (103) is slightly lower than the surface of the base, and a circle of sealing grooves (106) for installing a foam sealing ring is also arranged on the plane. Four installation columns (107) for fixing the push-in structure (3) are also arranged around the square trough (103).

2. A one-hand detachable injection pump as claimed in claim 1, characterized in that: The syringe fixing structure (2) is of a spring clip buckle type, comprising spring clips (201) respectively mounted above and below the sink (101) to limit the displacement of syringes (4) of different specifications on the Y axis.

3. A one-hand detachable injection pump as claimed in claim 1, characterized in that: The syringe fixing structure (2) comprises a limiting rod (202) compressed by a spring (205) inside the sink (101), the spring (205) being compressed between the limiting rod (202) and a limiting ring (203), the limiting ring (203) being fixed by a limiting bottom plate (204), and the protruding portion of the limiting rod (202) exceeds the surface of the sink.

4. A one-hand detachable injection pump as claimed in claim 2, characterized in that: The U-shaped sink groove (101) is provided with a notch (108) at the upper and lower parts thereof, into which the mounting part of the spring clip buckle-type syringe fixing structure (2) is inserted for fixing.

5. The one-hand detachable injection pump according to claim 3, characterized in that: Two holes (109) are provided below the U-shaped sink groove (101) for the limiting rod (202) to extend out, and mounting holes (110) are provided around it for mounting the limiting bottom plate (204).

6. The one-hand detachable injection pump according to claim 1, characterized in that: The shape of the magnetic external waterproof cover (6) is similar to the plane shape of the four sides of the square sink (103), and four magnet installation holes (601) are arranged at positions corresponding to the magnets on the four columns (105) in the square sink (103). The magnet installation holes (601) are installed with circular magnets that are magnetically attracted to the magnets on the columns (105), and an outer square sink (602) is also arranged in the middle to avoid interference with the injection structure (3).

7. The one-hand detachable injection pump according to claim 1, characterized in that: The push injection structure (3) is a screw-driven syringe anti-siphon structure, comprising a stepping motor (301), a transmission screw (302), two guide rods (303), a motor mounting seat (304), a transmission slider (305), a lower pressure plate (306), an upper pressure plate (307), a half nut (308), a limit switch (309), a spring baffle (310), a driven spur gear (311), a spur rack (312), a rack baffle (313), a spring fixing block (314), a dynamic sealing ring (315), a sealing ring baffle (316), a push injection pump cover (317) and a transmission support (318); the motor mounting seat (304) and the transmission support (3 18) is a T-shaped structure, which is respectively mounted on the mounting column (107) at the central position of the rear of the mounting base and the mounting column (107) at the side position, and is opposite to each other. Two guide columns (303) and a screw rod (302) are fixed horizontally in the middle; the stepper motor (301) is mounted on the motor mounting seat (304), fixed to the screw rod (302) by screws and passes through the motor mounting seat (304); the tail of the transmission screw rod (302) is axially fixed to the transmission support (318), and the front end is covered with a dynamic sealing ring (315) to form a sealing structure with the motor mounting seat (304) in the radial direction; the dynamic sealing ring (315) is axially fixed to the left and right by the motor mounting seat (304) and the sealing ring baffle (316).

8. The one-hand detachable injection pump according to claim 7, characterized in that: A transmission slider (305) is fixed on the two guide pillars (303), a spring baffle (310) is fixed below the transmission slider (305), a lower pressure plate (306) is fixed by screws in the middle of the transmission slider (305), a rotating shaft is installed below the lower pressure plate (306) and passes through an upper pressure plate (307); a half nut (308) meshing with the screw rod (302) is connected to the rear of the upper pressure plate (307), a spring is fixed below the half nut (308) to press against the spring baffle (310) further below, and an optical axis with a relatively large driven spur gear (311) is installed in the middle lower part of the upper pressure plate (307); a guide groove extends out from the bottom of the transmission slider (305) to install a T-shaped rack baffle The gear (313) meshes with the driven spur gear (311) to fix the top of the syringe (4) push rod; a deep groove for placing the spur rack (312) is respectively opened below the motor mounting seat (304) and the transmission support (318); a spring in a compressed state is supported below each end of the spur rack (312) so that the spur rack (312) is tightly meshed with the gear (311) above, and a spring fixing block (314) is provided below the spring and is respectively mounted on the motor mounting seat (304) and the transmission support (318); the limit switch (309) is mounted on the side of the motor mounting seat (304), and the injection pump cover (317) is fixed on the motor mounting seat (304) and the transmission support (318) to tightly wrap the entire transmission structure.

9. A one-hand detachable injection pump as claimed in claim 8, characterized in that: The accordion waterproof cover (5) is made of two pieces of waterproof cloth material, wherein the left end of one piece is fixed to the left side of the long strip opening (104) of the mounting base (1), and the right end is fixed to the left side of the upper pressing plate (307); the left end of the other piece of waterproof cloth is fixed to the right side of the rack stop (313), and the right end is fixed to the right side of the long strip opening (104); the accordion waterproof cover (5) is flattened when stretched, and is contracted to be in the shape of a rolling shutter door fold, and is flattened and contracted as the transmission slider (305) moves.

10. A method for disassembling a syringe pump that can be disassembled with one hand, used to implement the syringe pump that can be disassembled with one hand as claimed in any one of claims 1 to 9, characterized in that: include: Remove the magnetic external waterproof cover (6), press the upper pressure plate (307) upwards, manually move the transmission slider (305) to the left, and release the upper pressure plate (307) to reset the transmission structure; Using one hand, insert the syringe (4) into the mounting base (1), use the push-injection structure (3) to place it into the push-injection and anti-siphon structure, and securely fix it with the syringe fixing structure (2), and install the magnetic external waterproof cover (6) in place; After the push pump is started, the syringe push rod is pushed to the right by the upper and lower pressure plates (306) and the upper pressure plate (307), and at the same time, the anti-siphon structure of the push structure (3) is automatically locked, and no siphon phenomenon will occur after the push is completed. After use, the magnetic external waterproof cover (6) is removed and the syringe is disassembled.

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