Quantitative injection distribution valve

Abstract

The utility model relates to the technical field of injection pumps, in particular to a quantitative injection blending valve which comprises a shell, a rear cover plate is mounted on one side of the shell, a main control board is mounted on the inner wall of the rear cover plate, a motor is mounted in the shell, one end of the motor is fixedly connected with a motor positioning plate, a shaft head is mounted at the output end of the motor, and the main control board is mounted on the inner wall of the motor positioning plate. A coded disc is installed at one end of the shaft head, a photoelectric switch is also installed at the top end of the shell, the photoelectric switch is fixedly installed on the motor positioning plate, liquid can be input into an injector through one hole in the pressing ring, then the liquid is quantitatively output through other holes, or the liquid is quantitatively input through a plurality of holes. And then the liquid is output through one hole, so that the situation that a plurality of injection pumps need to be used for blending and conveying the liquid in the prior art is avoided, the liquid blending efficiency is improved, meanwhile, the equipment use cost is saved, the liquid can be accurately blended, the use is convenient, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of injection pumps, in particular to a quantitative injection dispensing valve. Background Art

[0002] The syringe pumps on the market use a single-chip microcomputer system to send out control pulses to rotate the stepper motor, which in turn drives the lead screw to convert rotational motion into linear motion, pushing the piston of the syringe for injection and infusion, achieving high-precision, smooth and pulsation-free liquid transmission. The injection speed can be set by the operator through keyboard operation.

[0003] During the use of existing industrial syringe pumps, multiple syringe pumps are needed to inject and prepare multiple liquids. This operation is very troublesome and requires a large number of syringe pumps to complete. For this reason, we propose a quantitative injection and preparation valve. Utility Model Content

[0004] In view of the above problems, the utility model provides a quantitative injection dispensing valve, which has multiple channels for dispensing liquids and can be operated by only a single injection pump.

[0005] The technical solution of the utility model is:

[0006] A quantitative injection dispensing valve comprises a shell, a rear cover plate is installed on one side of the shell, a main control board is installed on the inner wall of the rear cover plate, a motor is installed inside the shell, one end of the motor is fixedly connected to a motor positioning plate, a shaft head is installed on the output end of the motor, a code disk is installed on one end of the shaft head, a photoelectric switch is also installed on the top of the shell, the photoelectric switch is fixedly installed on the motor positioning plate, a support block is fixedly installed on one side of the motor positioning plate, a magnetically encoded circuit board is fixedly installed on the bottom end of the support block, a front surface plate is fixedly installed on one end of the support block, a valve seat is installed on the top of the front surface plate, a rotating shaft is installed in the middle of the valve seat, and a bearing is fixedly installed on one end of the rotating shaft A rotor is installed at the other end of the rotating shaft, a valve cover is installed at one side of the valve seat, a pressure ring is fixedly installed at one side of the valve cover, a syringe is installed at the bottom end of the pressure ring, a screw motor is installed at the bottom end of the motor, a synchronous wheel is fixedly installed at the output end of the screw motor, a fixing plate is fixedly installed at the top of the screw motor, a synchronous belt is installed on the surface of the synchronous wheel, a driven wheel is installed at the other end of the synchronous belt, a screw is fixedly installed at the bottom end of the driven wheel, a magnetic encoder is fixedly installed at the top of the driven wheel, a slide is threadedly connected to the surface of the screw, a fixing plate is installed at the bottom end of the slide, and limiting columns are fixedly installed on both sides of the fixing plate, and the limiting columns pass through both ends of the slide.

[0007] In a further technical solution, a mounting hole is opened on one side of the slide, the bottom end of the syringe passes through the mounting hole, a hand screw is installed at the bottom end of the syringe, and the bottom end of the syringe is connected to one side of the slide through the set hand screw.

[0008] In a further technical solution, a square opening is provided at the bottom end of the front surface plate, and one side of the slide passes through the square opening and can slide in the square opening.

[0009] In a further technical solution, the front surface plate is fixedly mounted on the other side of the housing.

[0010] In a further technical solution, a limit rod is fixedly installed on one side of the upper surface of the slide, a limit photoelectric switch is installed on the top of the fixed plate, and the limit rod can pass through one side of the limit photoelectric switch and can block the light source thereon.

[0011] The beneficial effects of the utility model are:

[0012] The device can utilize one of the holes on the pressure ring to input liquid into the syringe, and then quantitatively output the liquid through the other holes, or quantitatively input liquid through multiple holes, and then output the liquid through one hole, thereby avoiding the need to use multiple injection pumps to mix and transport liquids in the prior art, improving the efficiency of liquid mixing, and saving equipment use costs. It can also accurately mix liquids, is easy to use, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the split structure of an embodiment of the utility model.

[0015] Description of reference numerals:

[0016] 1. Shell; 2. Main control board; 3. Back cover; 4. Motor; 5. Motor positioning board; 6. Shaft head; 7. Code disk; 8. Photoelectric switch; 9. Support block; 10. Magnetic circuit board; 11. Front surface plate; 12. Valve seat; 13. Bearing; 14. Rotating shaft; 15. Rotor; 16. Valve cover; 17. Pressing ring; 18. Syringe; 19. Thumb screw; 20. Screw motor; 21. Fixing plate; 22. Synchronous wheel; 23. Synchronous belt; 24. Magnetic encoder; 25. Limit photoelectric switch; 26. Screw; 27. Slide; 28. Limit rod. DETAILED DESCRIPTION

[0017] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0018] Example:

[0019] like Figure 1-Figure 2 As shown, the quantitative injection dispensing valve includes a shell 1, a rear cover plate 3 is installed on one side of the shell 1, a main control board 2 is installed on the inner wall of the rear cover plate 3, a motor 4 is installed inside the shell 1, one end of the motor 4 is fixedly connected to a motor positioning plate 5, an output end of the motor 4 is installed with a shaft head 6, one end of the shaft head 6 is installed with a code disk 7, a photoelectric switch 8 is also installed on the top of the shell 1, the photoelectric switch 8 is fixedly installed on the motor positioning plate 5, a support block 9 is fixedly installed on one side of the motor positioning plate 5, and a magnetically coded circuit board is fixedly installed on the bottom end of the support block 9 10, a front surface plate 11 is fixedly mounted on one end of the support block 9, a valve seat 12 is mounted on the top of the front surface plate 11, a rotating shaft 14 is mounted in the middle of the valve seat 12, a bearing 13 is fixedly mounted on one end of the rotating shaft 14, a rotor 15 is mounted on the other end of the rotating shaft 14, a valve cover 16 is mounted on one side of the valve seat 12, a pressure ring 17 is fixedly mounted on one side of the valve cover 16, a syringe 18 is mounted on the bottom end of the pressure ring 17, a screw motor 20 is mounted on the bottom end of the motor 4, a synchronous wheel 22 is fixedly mounted on the output end of the screw motor 20, and the screw A fixing plate 21 is fixedly installed on the top of the motor 20, a synchronous belt 23 is installed on the surface of the synchronous wheel 22, a driven wheel is installed on the other end of the synchronous belt 23, a screw rod 26 is fixedly installed on the bottom end of the driven wheel, a magnetic encoder 24 is fixedly installed on the top of the driven wheel, a slide 27 is threadedly connected on the surface of the screw rod 26, a fixing plate is fixedly installed on the bottom end of the slide 27, and limit columns are fixedly installed on both sides of the fixing plate. The limit columns pass through the two ends of the slide 27, and a mounting hole is opened on one side of the slide 27. The bottom end of the syringe 18 passes through the mounting hole, and the syringe A hand screw 19 is installed at the bottom end of 18, and the bottom end of the syringe 18 is connected to one side of the slide through the hand screw 19. A square opening is opened at the bottom end of the front surface plate 11, and one side of the slide 27 passes through the square opening and can slide at the square opening. The front surface plate 11 is fixedly installed on the other side of the shell 1, and a limit rod 28 is fixedly installed on one side of the upper surface of the slide 27. A limit photoelectric switch 25 is installed on the top of the fixed plate 21. The limit rod 28 can pass through one side of the limit photoelectric switch 25 and can block the light source thereon.

[0020] The working principle of the above technical solution is as follows:

[0021] By starting the motor 4, the shaft head 6 on it is driven to rotate, and the shaft head 6 drives the rotor 15 to rotate through the bearing 13, and at the same time drives the synchronous wheel 22 on it to rotate. After rotating a certain angle, the vertical groove on the rotor 15 is aligned with one of the holes on the pressure ring 17, and then the screw motor 20 is started, the screw motor 20 drives the synchronous wheel 22 to rotate, and the synchronous wheel 22 drives the driven wheel to rotate through the synchronous belt 23, and the driven wheel drives the screw 26 to rotate, so that the slide 27 can be moved vertically downward. After the slide 27 moves downward, and because the "L"-shaped groove is provided on the pressure ring 17, the liquid can be transported into the syringe 18 through the holes on the pressure ring 17, and then the motor 4 is started again to drive the rotor 15 to rotate, so that the vertical groove is aligned with other holes, and the screw motor 20 is started to move the slide 27 an appropriate distance, so that the liquid in the syringe 18 can be quantitatively injected, so that the liquid in the syringe 18 is output to the outside through different holes.

[0022] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A quantitative injection dispensing valve, comprising a housing (1), characterized in that: A rear cover plate (3) is installed on one side of the shell (1), and a main control board (2) is installed on the inner wall of the rear cover plate (3). A motor (4) is installed inside the shell (1), and one end of the motor (4) is fixedly connected to a motor positioning plate (5). A shaft head (6) is installed at the output end of the motor (4), and one end of the shaft head (6) is installed with a code disk (7). A photoelectric switch (8) is also installed on the top of the shell (1), and the photoelectric switch (8) is fixedly installed on the motor positioning plate (5). A support block (9) is fixedly installed on one side of the motor positioning plate (5), and a magnetically encoded circuit board (10) is fixedly installed on the bottom end of the support block (9). A front surface plate (11) is fixedly installed on one end of the support block (9), and a valve seat (12) is installed on the top of the front surface plate (11). A rotating shaft (14) is installed in the middle of the valve seat (12), and a bearing (13) is fixedly installed on one end of the rotating shaft (14). A rotor (15) is installed at the other end of the valve seat (14), a valve cover (16) is installed at one side of the valve seat (12), a pressure ring (17) is fixedly installed at one side of the valve cover (16), a syringe (18) is installed at the bottom end of the pressure ring (17), a screw motor (20) is installed at the bottom end of the motor (4), a synchronous wheel (22) is fixedly installed at the output end of the screw motor (20), and a fixing plate (21) is fixedly installed at the top end of the screw motor (20). A synchronous belt (23) is installed on the surface of the synchronous wheel (22), a driven wheel is installed on the other end of the synchronous belt (23), a screw rod (26) is fixedly installed on the bottom end of the driven wheel, a magnetic encoder (24) is fixedly installed on the top end of the driven wheel, a slide (27) is threadedly connected on the surface of the screw rod (26), a fixed plate is installed on the bottom end of the slide (27), and limit columns are fixedly installed on both sides of the fixed plate, and the limit columns pass through both ends of the slide (27).

2. The quantitative injection dispensing valve according to claim 1, characterized in that: A mounting hole is provided on one side of the slide (27), and the bottom end of the syringe (18) passes through the mounting hole. A hand screw (19) is installed on the bottom end of the syringe (18), and the bottom end of the syringe (18) is connected to one side of the slide via the hand screw (19).

3. The quantitative injection dispensing valve according to claim 1, characterized in that: A square opening is provided at the bottom end of the front surface plate (11), and one side of the slide platform (27) passes through the square opening and can slide in the square opening.

4. The quantitative injection dispensing valve according to claim 1, characterized in that: The front surface plate (11) is fixedly mounted on the other side of the housing (1).

5. The quantitative injection dispensing valve according to claim 1, characterized in that: A limit rod (28) is fixedly mounted on one side of the upper surface of the slide (27), a limit photoelectric switch (25) is mounted on the top of the fixed plate (21), and the limit rod (28) can penetrate one side of the limit photoelectric switch (25) and can shield the light source thereon.

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