A small-dose precise quantitative control injection pump

Abstract

The present invention discloses a small-dose precise quantitative control injection pump, which belongs to the technical field of injection pumps. The present invention comprises an injection pump main body, a screw slide is provided on the front end surface of the injection pump main body, a screw slide is slidably connected to the front of the screw slide, and a clamping adjustment mechanism is provided on the front end surface of the injection pump main body. The clamping adjustment mechanism comprises a first slider, a second slider, a positioning clamping shell, a driving wheel, a driven wheel and a transmission belt. The first slider is arranged in front of the screw slide, and the second slider is arranged directly below the first slider. The two positioning clamping shells are respectively fixed on the end surfaces opposite to the first slider and the second slider, and the first pitch-adjusting screw is threadedly connected to the inside of the first slider. The present invention provides a clamping adjustment mechanism. Before use, the first slider and the second slider slide synchronously and control the adjustment position of the syringe between the two positioning clamping shells, thereby adapting to the position adaptation use of syringes of different length specifications.

Description

Technical Field

[0001] The invention belongs to the technical field of injection pumps, and in particular relates to a small-dose precise quantitative control injection pump. Background Art

[0002] A syringe pump is an injection device composed of a stepper motor and its driver, a lead screw and a bracket. When working, the single-chip microcomputer system sends a control pulse to rotate the stepper motor, and the stepper motor drives the lead screw to convert the rotational motion into linear motion, pushing the piston of the syringe for injection and infusion, achieving high-precision, smooth and pulsation-free liquid transmission.

[0003] At present, the syringe is clamped on the syringe pump host. Since the clamping position of the syringe is not convenient to adjust, the clamping position of the syringe is fixed, which makes it difficult to adapt to syringes of different lengths. In particular, when the syringe and the piston rod extending inside are too long, it will be difficult to clamp. In addition, the disassembly of the syringe after use requires manual work and is time-consuming. Summary of the Invention

[0004] The object of the present invention is to provide a small-dose precise quantitative control injection pump to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a small-dose precise quantitative control injection pump, comprising an injection pump main body, a screw slide is provided on the front end face of the injection pump main body, a screw slide is slidably connected to the front of the screw slide, and a clamping adjustment mechanism is provided on the front end face of the injection pump main body, the clamping adjustment mechanism comprises a first slider, a second slider, a positioning clamping shell, a driving wheel, a driven wheel and a transmission belt, the first slider is arranged in front of the screw slide, the second slider is arranged directly below the first slider, the two positioning clamping shells are respectively fixed on the opposite end faces of the first slider and the second slider, the first pitch-adjusting screw is threadedly connected to the inside of the first slider, the second pitch-adjusting screw is threadedly connected to the inside of the second slider, and the driving wheel is sleeved and fixed on the first pitch-adjusting screw The driven wheel is sleeved and fixed on the second pitch-adjusting screw, the transmission belt is arranged on the driving wheel and the driven wheel, and a clamping mechanism is provided at the output end of the syringe of the injection pump host, and the clamping mechanism includes a clamping cover, a support arm, a spring sleeve and a telescopic slide rod, the clamping cover plate is arranged at the front end of the syringe, the support arm is fixed on the side surface of the clamping cover plate, the spring sleeve is fixed on one side surface of the injection pump host, the telescopic slide rod is slidably passed through the inside of the spring sleeve, and the front end face of the injection pump host is provided with an automatic ejection mechanism, the automatic ejection mechanism includes an ejection bracket, an ejection cylinder and an ejection plate, the ejection bracket is slidably connected to the inside of the shell of the injection pump host, the ejection cylinder is fixed on the rear surface of the shell of the injection pump host, and the ejection plate is arranged at the front end of the injection pump host.

[0006] It should be noted in the solution that a clamping port is provided inside the positioning clamping shell, a first distance adjustment slide box is fixed to the front end face of the injection pump main body, and a second distance adjustment slide box is fixed to the front end face of the injection pump main body below the first distance adjustment slide box.

[0007] It is further worth noting that the first pitch-adjusting screw is arranged inside the first pitch-adjusting sliding box, and the second pitch-adjusting screw is arranged inside the second pitch-adjusting sliding box. The inner end walls of the first pitch-adjusting sliding box and the second pitch-adjusting sliding box are fixed with rotating bearings, and the first pitch-adjusting screw and the second pitch-adjusting screw are respectively arranged in the rotating bearings.

[0008] It should be further explained that a protective shell is fixed to one end of the first pitch adjustment sliding box and the second pitch adjustment sliding box, a drive motor is fixed to the outer surface of one side of the protective shell, and the end of the first pitch adjustment screw extending into the protective shell is fixed to the output shaft of the drive motor.

[0009] As a preferred embodiment, a distance-adjusting slot is provided on the surface of the opposite side of the first distance-adjusting slide box and the second distance-adjusting slide box, the first slider is slidably connected in the distance-adjusting slot of the first distance-adjusting slide box, and the second slider is also slidably connected in the distance-adjusting slot of the second distance-adjusting slide box.

[0010] As a preferred embodiment, a clamping spring is sleeved on the portion where the telescopic slide rod extends into the spring sleeve, one end of the clamping spring is fixed to the inner wall of the spring sleeve, and the other end of the clamping spring is fixed to the end plate of the telescopic slide rod.

[0011] As a preferred embodiment, the end of the telescopic slide rod extending out of the spring sleeve is fixed on the end of the support arm away from the pressing cover plate, an anti-slip hole is provided on one end surface of the pressing cover plate, and an anti-slip washer is fixed on the end surface of the pressing cover plate close to the syringe.

[0012] As a preferred embodiment, one end of the ejection bracket is fixed to the output end of the ejection cylinder, and the two arms of the ejection bracket away from the ejection cylinder are fixed to the middle of one end surface of the ejection plate.

[0013] As a preferred embodiment, a receiving groove is provided on the front end surface of the injection pump main unit, and the ejector plate is adapted to the receiving groove.

[0014] As a preferred embodiment, the front end surface of the injection pump host is provided with a display screen, the front end surface of the injection pump host is provided with control buttons on one side of the display screen, and a gripping handle is fixed on one side surface of the injection pump host.

[0015] Compared with the prior art, the small-dose precise quantitative control injection pump provided by the present invention has at least the following beneficial effects:

[0016] Through the provided clamping adjustment mechanism, before use, the first slider and the second slider slide synchronously and control the syringe adjustment position between the two positioning clamping shells, thereby adapting to the position adaptation of syringes of different length specifications.

[0017] Through the provided clamping mechanism, when the syringe is clamped, the pressing cover can prevent the syringe from falling off. At the same time, the pressing cover adaptively presses the syringe from one end under the action of the rebound force of the pressing spring inside the spring sleeve to prevent it from displacement.

[0018] Through the provided positioning clamping shell and automatic ejection mechanism, after injection, the positioning clamping shell can be controlled to run in the opposite direction and the syringe can be freed from the restriction of the cover plate. At the same time, the ejection plate at one end of the ejection bracket pushes the syringe outward and realizes the function of automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 these drawings without creative work.

[0020] Figure 1 This is a three-dimensional diagram of the overall structure of a small-dose precise quantitative control injection pump of the present invention;

[0021] Figure 2 This is a three-dimensional diagram of the protective shell structure of a small-dose precise quantitative control injection pump of the present invention;

[0022] Figure 3 This is a perspective view of the cross-sectional structure of the first distance-adjusting slide box of a small-dose precise quantitative control injection pump of the present invention;

[0023] Figure 4 This is a three-dimensional diagram of the spring sleeve structure of a small-dose precise quantitative control injection pump of the present invention;

[0024] Figure 5 This is a three-dimensional diagram of the cross-sectional structure of a spring sleeve of a small-dose precise quantitative control injection pump of the present invention;

[0025] Figure 6 This is a three-dimensional diagram of the ejector plate structure of a small-dose precise quantitative control injection pump of the present invention;

[0026] Figure 7 The invention provides a small dose precise quantitative control injection pump Figure 1 Enlarged view of point A in the middle.

[0027] In the figure: 1. Injection pump main unit; 2. Display screen; 3. Control button; 4. Screw slide; 5. Screw slide; 6. First pitch-adjusting slide box; 7. Second pitch-adjusting slide box; 8. Pitch-adjusting slide groove; 9. First slider; 10. Second slider; 11. Positioning clamping shell; 12. Clamping port; 13. First pitch-adjusting screw; 14. Second pitch-adjusting screw; 15. Rotating bearing; 16. Driving wheel; 17. Driven wheel; 18. Transmission belt; 19. Protective shell; 20. Driving motor; 21. Clamping cover; 22. Support arm; 23. Spring sleeve; 24. Telescopic slide; 25. Clamping spring; 26. Anti-slip opening; 27. Anti-slip washer; 28. Ejector bracket; 29. ​​Ejector cylinder; 30. Ejector plate; 31. Receiving groove; 32. Holding handle. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the embodiments.

[0029] See also Figure 1-7The present invention provides a small-dose precise quantitative control injection pump, including an injection pump main body 1, a screw slide 4 is provided on the front end surface of the injection pump main body 1, a screw slide 4 is slidably connected to the front of the screw slide 4 with a screw slide 5, and a clamping adjustment mechanism is provided on the front end surface of the injection pump main body 1, the clamping adjustment mechanism includes a first slider 9, a second slider 10, a positioning clamping shell 11, a driving wheel 16, a driven wheel 17 and a transmission belt 18, the driving wheel 16, the transmission belt 18 and the driven wheel 17 cooperate to control the rotation of the second pitch-adjusting screw 14, so that the first slider 9 and the second slider 10 slide synchronously and control the adjustment position of the syringe between the two positioning clamping shells 11;

[0030] The first slider 9 is arranged in front of the screw slide 4, and the second slider 10 is arranged directly below the first slider 9. Two positioning clamping shells 11 are respectively fixed on the opposite end surfaces of the first slider 9 and the second slider 10. The first pitch-adjusting screw 13 is threadedly connected to the inside of the first slider 9, and the second pitch-adjusting screw 14 is threadedly connected to the inside of the second slider 10. The driving wheel 16 is sleeved and fixed on the first pitch-adjusting screw 13, and the driven wheel 17 is sleeved and fixed on the second pitch-adjusting screw 14. The transmission belt 18 is provided on the driving wheel 16 and the driven wheel 17;

[0031] The syringe output end of the injection pump host 1 is provided with a clamping mechanism, which includes a clamping cover 21, a support arm 22, a spring sleeve 23 and a telescopic slide 24. The clamping cover 21 is arranged at the front end of the syringe, the support arm 22 is fixed on the side surface of the clamping cover 21, the spring sleeve 23 is fixed on the side surface of the injection pump host 1, and the telescopic slide 24 is slidably penetrated inside the spring sleeve 23, and the injection end of the syringe passes through the anti-detachment through-hole 26 of the clamping cover 21. In this way, the clamping cover 21 can prevent the syringe from detaching. At the same time, the clamping cover 21 adaptively clamps the syringe from one end under the action of the rebound force of the clamping spring 25 inside the spring sleeve 23 to prevent it from displacement;

[0032] The front end face of the injection pump main unit 1 is provided with an automatic ejection mechanism, which includes an ejection bracket 28, an ejection cylinder 29 and an ejection plate 30. After the ejection cylinder 29 is started, the ejection plate 30 at one end of the ejection bracket 28 pushes the syringe outward and realizes the function of automatic unloading. The ejection bracket 28 is slidably connected to the inside of the shell of the injection pump main unit 1, the ejection cylinder 29 is fixed to the rear surface of the shell of the injection pump main unit 1, and the ejection plate 30 is arranged at the front end of the injection pump main unit 1.

[0033] Further as Figure 1 、 Figure 2 and Figure 3As shown, it is worth mentioning that a clamping port 12 is provided inside the positioning clamping shell 11, a first distance adjustment slide box 6 is fixed to the front end face of the injection pump main body 1, and a second distance adjustment slide box 7 is fixed to the front end face of the injection pump main body 1 below the first distance adjustment slide box 6.

[0034] Further as Figure 3 As shown, it is worth mentioning that the first pitch-adjusting screw 13 is arranged inside the first pitch-adjusting slide box 6, and the second pitch-adjusting screw 14 is arranged inside the second pitch-adjusting slide box 7. The inner end walls of the first pitch-adjusting slide box 6 and the second pitch-adjusting slide box 7 are both fixed with a rotating bearing 15, and the first pitch-adjusting screw 13 and the second pitch-adjusting screw 14 are respectively arranged in the rotating bearing 15.

[0035] Further as Figure 1 、 Figure 2 and Figure 4 As shown, it is worth mentioning that a protective shell 19 is fixed to one end of the first distance adjusting slide box 6 and the second distance adjusting slide box 7, a drive motor 20 is fixed to the outer surface of one side of the protective shell 19, and one end of the first distance adjusting screw 13 extending into the protective shell 19 is fixed to the output shaft of the drive motor 20.

[0036] Further as Figure 4 As shown, it is worth mentioning that a distance-adjusting slot 8 is provided on the surface of the opposite side of the first distance-adjusting slide box 6 and the second distance-adjusting slide box 7, the first slider 9 is slidably connected in the distance-adjusting slot 8 of the first distance-adjusting slide box 6, and the second slider 10 is also slidably connected in the distance-adjusting slot 8 of the second distance-adjusting slide box 7.

[0037] Further as Figure 5 As shown, it is worth mentioning that a tightening spring 25 is sleeved on the portion where the telescopic slide rod 24 extends into the spring sleeve 23 , one end of the tightening spring 25 is fixed to the inner wall of the spring sleeve 23 , and the other end of the tightening spring 25 is fixed to the end plate of the telescopic slide rod 24 .

[0038] Further as Figure 5 As shown, it is worth mentioning that one end of the telescopic slide rod 24 extending from the spring sleeve 23 is fixed on the end of the support arm 22 away from the pressing cover 21, and an anti-slip hole 26 is provided on one end surface of the pressing cover 21, and an anti-slip gasket 27 is fixed on the end surface of the pressing cover 21 close to the syringe.

[0039] Further as Figure 6 As shown, it is worth noting that one end of the ejection bracket 28 is fixed to the output end of the ejection cylinder 29 , and the two arms of the ejection bracket 28 away from the ejection cylinder 29 are fixed to the middle of one end surface of the ejection plate 30 .

[0040] Further as Figure 7As shown, it is worth mentioning that a receiving groove 31 is provided on the front end surface of the injection pump main body 1 , and the ejector plate 30 is adapted to the receiving groove 31 .

[0041] Further as Figure 1 As shown, it is worth noting that the front end surface of the injection pump main unit 1 is provided with a display screen 2, the front end surface of the injection pump main unit 1 is provided with a control button 3 on one side of the display screen 2, and a gripping handle 32 is fixed on one side surface of the injection pump main unit 1.

[0042] This solution has the following working process: before use, the barrel seat of the syringe is placed along the clamping openings 12 of the two upper and lower positioning clamping shells 11, and then the drive motor 20 is turned on. The drive motor 20 drives the first pitch-adjusting screw 13 to rotate at the rotating bearing 15. At the same time, the driving wheel 16, the transmission belt 18 and the driven wheel 17 cooperate to control the rotation of the second pitch-adjusting screw 14. In this way, the first slider 9 and the second slider 10 slide synchronously and control the adjustment position of the syringe between the two positioning clamping shells 11, thereby adapting to the position adaptation of syringes of different length specifications;

[0043] When the syringe is clamped, the injection end of the syringe passes through the anti-dropout hole 26 of the pressing cover 21, so that the pressing cover 21 can prevent the syringe from dropping out. At the same time, the pressing cover 21 adaptively presses the syringe from one end under the action of the rebound force of the pressing spring 25 inside the spring sleeve 23 and prevents it from moving.

[0044] After the injection is completed, the injection tube at the end of the syringe is first unplugged, and then the drive motor 20 is turned on again to control the positioning clamping shell 11 to run in the opposite direction and release the syringe from the restriction of the cover plate 21, and then the ejection cylinder 29 is started, so that the ejection plate 30 at one end of the ejection bracket 28 pushes the syringe outward and realizes the function of automatic unloading.

[0045] In summary: before use, the first slider 9 and the second slider 10 slide synchronously and control the position of the syringe between the two positioning clamping shells 11, so as to adapt to the position adaptation of syringes of different length specifications; when the syringe is clamped, the pressing cover 21 can prevent the syringe from falling off, and at the same time, the pressing cover 21 adaptively presses the syringe from one end under the action of the rebound force of the pressing spring 25 inside the spring sleeve 23 to prevent it from displacement; after the injection is used, the positioning clamping shell 11 can be controlled to run in the opposite direction and the syringe can be separated from the restriction of the pressing cover 21, and at the same time, the ejection plate 30 at one end of the ejection bracket 28 pushes the syringe outward and realizes the function of automatic unloading.

[0046] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A small-dose precise quantitative control injection pump, comprising an injection pump main unit (1), wherein a screw slide (4) is provided on the front end surface of the injection pump main unit (1), and a screw slide (5) is slidably connected to the front of the screw slide (4), characterized in that: The front end face of the injection pump main unit (1) is provided with a clamping adjustment mechanism, and the clamping adjustment mechanism includes a first slider (9), a second slider (10), a positioning clamping shell (11), a driving wheel (16), a driven wheel (17) and a transmission belt (18). The first slider (9) is arranged in front of the screw slide (4), and the second slider (10) is arranged directly below the first slider (9). The two positioning clamping shells (11) are respectively fixed on the opposite end faces of the first slider (9) and the second slider (10). The first pitch-adjusting screw (13) is threadedly connected to the inside of the first slider (9), and the second pitch-adjusting screw (14) is threadedly connected to the inside of the second slider (10). The driving wheel (16) is sleeved and fixed on the first pitch-adjusting screw (13), and the driven wheel (17) is sleeved and fixed on the second pitch-adjusting screw (14). The transmission belt (18) is arranged on the driving wheel (16) and the driven wheel (17). The syringe output end of the syringe pump main unit (1) is provided with a clamping mechanism, and the clamping mechanism includes a clamping cover plate (21), a support arm (22), a spring sleeve (23) and a telescopic slide rod (24). The clamping cover plate (21) is provided at the front end of the syringe, the support arm (22) is fixed on the side surface of the clamping cover plate (21), the spring sleeve (23) is fixed on the side surface of the syringe pump main unit (1), and the telescopic slide rod (24) is slidably penetrated inside the spring sleeve (23). The front end surface of the syringe pump main unit (1) is provided with an automatic ejection mechanism, and the automatic ejection mechanism includes an ejection bracket (28), an ejection cylinder (29) and an ejection plate (30). The ejection bracket (28) is slidably connected to the inside of the shell of the syringe pump main unit (1), the ejection cylinder (29) is fixed on the rear surface of the shell of the syringe pump main unit (1), and the ejection plate (30) is provided at the front end of the syringe pump main unit (1); A clamping opening (12) is provided inside the positioning clamping shell (11); a first distance-adjusting slide box (6) is fixed to the front end surface of the injection pump main unit (1); and a second distance-adjusting slide box (7) is fixed to the front end surface of the injection pump main unit (1) below the first distance-adjusting slide box (6); The first pitch-adjusting screw (13) is arranged inside the first pitch-adjusting sliding box (6), and the second pitch-adjusting screw (14) is arranged inside the second pitch-adjusting sliding box (7). Rotating bearings (15) are fixed to the inner end walls of the first pitch-adjusting sliding box (6) and the second pitch-adjusting sliding box (7), and the first pitch-adjusting screw (13) and the second pitch-adjusting screw (14) are respectively arranged in the rotating bearings (15).

2. A small-dose precise quantitative control injection pump according to claim 1, characterized in that: A protective shell (19) is fixed to one end of the first pitch-adjusting slide box (6) and the second pitch-adjusting slide box (7), a driving motor (20) is fixed to one outer surface of the protective shell (19), and one end of the first pitch-adjusting screw (13) extending into the protective shell (19) is fixed to the output shaft of the driving motor (20).

3. A small-dose precise quantitative control injection pump according to claim 2, characterized in that: A distance adjustment slot (8) is provided on the surfaces of one side opposite to the first distance adjustment slide box (6) and the second distance adjustment slide box (7); the first slider (9) is slidably connected to the distance adjustment slot (8) of the first distance adjustment slide box (6); and the second slider (10) is also slidably connected to the distance adjustment slot (8) of the second distance adjustment slide box (7).

4. A small-dose precise quantitative control injection pump according to claim 3, characterized in that: A holding spring (25) is sleeved on the portion where the telescopic slide rod (24) extends into the spring sleeve (23), one end of the holding spring (25) is fixed to the inner wall of the spring sleeve (23), and the other end of the holding spring (25) is fixed to the end plate of the telescopic slide rod (24).

5. A small-dose precise quantitative control injection pump according to claim 4, characterized in that: One end of the telescopic slide rod (24) extending out of the spring sleeve (23) is fixed to the end of the support arm (22) away from the pressing cover (21), and an anti-slip hole (26) is provided on one end surface of the pressing cover (21). An anti-slip washer (27) is fixed to the end surface of the pressing cover (21) close to the syringe.

6. A small-dose precise quantitative control injection pump according to claim 5, characterized in that: One end of the ejection bracket (28) is fixed to the output end of the ejection cylinder (29), and two arms of the ejection bracket (28) away from the ejection cylinder (29) are fixed to the middle of one end surface of the ejection plate (30).

7. A small-dose precise quantitative control injection pump according to claim 6, characterized in that: A receiving groove (31) is provided on the front end surface of the injection pump main unit (1), and the ejector plate (30) is adapted to the receiving groove (31).

8. The small-dose precise quantitative control injection pump according to claim 6, characterized in that: The front end surface of the injection pump main unit (1) is provided with a display screen (2), the front end surface of the injection pump main unit (1) is provided with a control button (3) on one side of the display screen (2), and a gripping handle (32) is fixed on one side surface of the injection pump main unit (1).

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