Multigang rotary valve injection pump

Abstract

The utility model discloses a multi-union rotary valve injection pump, which belongs to the field of fluid transportation and comprises a rotary valve and a sample injector. The rotary valve comprises an adjusting block and a valve head, the valve head is provided with a plurality of flow channels, the adjusting block is provided with a communicating groove, the communicating groove is communicated with the sample injector flow channel, and the communicating groove is far away from the sample injector flow channel and can be communicated with any flow channel; the piston rod is sleeved with the sample injector, the piston rod can move up and down, the rotating block drives the adjusting block to rotate, the communicating groove in the adjusting block is communicated with different flowing channels, liquid can enter the sample injector or be discharged from the sample injector by controlling the piston rod to move up and down, and the same liquid can be conveyed to different areas. Or different liquids are conveyed to the same position, and a plurality of independent liquid conveying channels and control systems are not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid transportation, and in particular relates to a multi-joint rotary valve injection pump. Background Art

[0002] A syringe pump is a medical device that can precisely control the speed and dosage of injection of drugs or liquids. It is commonly used in medical places such as hospitals and clinics, as well as life science research and drug development laboratories. A syringe pump drives a syringe or infusion tube mechanically or electronically to deliver drugs or liquids into the patient's body at a constant rate or according to a preset program.

[0003] Most existing syringe pumps are designed to focus on precise injection and dosage control of liquids or drugs, but they have certain limitations in the function of directly delivering the same liquid to different areas. These syringe pumps can usually only achieve one-to-one liquid delivery, that is, one infusion channel corresponds to one target area. However, in complex medical scenarios, the same liquid often needs to be delivered to multiple different parts or areas. In order to achieve multi-area delivery, some high-end or customized syringe pumps may be equipped with multiple independent infusion channels and control systems to support multi-channel parallel operation. But such a design increases the complexity and cost of the equipment. Utility Model Content

[0004] The utility model aims to provide a multi-rotary valve injection pump to solve the problem that the existing injection pumps can usually only realize one-to-one liquid delivery.

[0005] To achieve the above object, the utility model provides the following technical solutions: a multi-connected rotary valve injection pump, comprising a rotary valve and an injector;

[0006] The rotary valve comprises an adjusting block and a valve head, wherein the valve head is provided with a plurality of flow channels, and the adjusting block is provided with a connecting groove, wherein the connecting groove is connected to the injector flow channel, and the connecting groove is away from the injector flow channel and can be connected to any flow channel;

[0007] The sample injector is sleeved on the piston rod, and the piston rod can move up and down.

[0008] Furthermore, the piston rod is installed on a lifting mechanism, which includes a No. 2 motor, a threaded rod, a threaded sleeve, and a No. 1 lifting block. The threaded rod is installed on the output shaft of the No. 2 motor, the threaded sleeve is threadedly connected to the threaded rod, and the threaded sleeve is installed on the No. 1 lifting block, and the No. 1 lifting block is slidably set on the mounting plate.

[0009] Furthermore, the No. 1 lifting block is installed on a sliding block, the sliding block is slidably arranged on a sliding rail, and the sliding rail is installed on a mounting plate.

[0010] Furthermore, a limiting groove is arranged on the mounting plate, the connecting block on the sliding block passes through the limiting groove, and the connecting block is connected to a No. 2 lifting block.

[0011] Furthermore, a fixing groove is provided at the bottom end of the piston rod, and the bottom of the No. 2 lifting block is installed on the No. 2 lifting block.

[0012] Furthermore, the rotary valve is installed on a driving mechanism, which includes a No. 1 motor, a driving shaft and two driven shafts. The driving shaft is installed on the output shaft of the No. 1 motor. A driving gear is installed on the driving shaft. Driven gears are installed on the two driven shafts. Both sides of the driving gear are respectively meshed and connected with the sides of the two driven gears that are close to each other.

[0013] Furthermore, there are multiple driving mechanisms.

[0014] Furthermore, the ends of the driving shaft and the driven shaft are both connected with transition shafts, the transition shaft is connected with a rotating block, and the rotating block is provided with a protrusion.

[0015] Furthermore, a groove is formed on a side of the regulating block away from the valve head, and the groove is matched with the protrusion.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] In this multi-joint rotary valve injection pump, the rotating block drives the adjusting block to rotate, so that the connecting grooves in the adjusting block are connected to different flow channels. By controlling the piston rod to move up and down, the liquid can enter the injector or be discharged from the injector. The same liquid can be delivered to different areas, or different liquids can be delivered to the same position, without the need for multiple independent infusion channels and control systems.

[0018] The multi-joint rotary valve injection pump is provided with a driving gear through a driving shaft driving two driven gears to rotate, the driven gears drive the driven shaft to rotate, and the two driven shafts drive the rotating block to rotate through a transition shaft, so that the liquid delivery volume can be increased in a parallel manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of a multi-joint rotary valve injection pump;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective with the back panel removed;

[0021] Figure 3 for Figure 2 Sectional view along line CC;

[0022] Figure 4 for Figure 2The center of a single valve head is taken along the BB section;

[0023] Figure 5 for Figure 1 A cross-sectional view of the two drive mechanisms along the symmetry line AA;

[0024] Figure 6 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 7 This is a three-dimensional diagram of the adjustment block.

[0026] In the figure: 10, driving mechanism; 100, bearing; 101, housing No. 1; 102, housing No. 2; 103, housing No. 3; 110, motor No. 1; 111, motor No. 1 output shaft; 120, driving shaft; 121, driving gear; 130, driven shaft; 131, driven gear; 140, transition shaft; 150, rotating block; 151, protrusion; 20, rotary valve; 210, adjusting block; 211, connecting groove; 212, Groove; 220, valve head; 221, flow channel; 222, injector flow channel; 30, lifting mechanism; 310, No. 2 motor; 320, threaded rod; 330, threaded sleeve; 340, No. 1 lifting block; 350, slider; 351, connecting block; 360, slide rail; 370, No. 2 lifting block; 371, fixing bolt; 40, injector; 410, piston rod; 4101, fixing groove; 50, mounting plate; 501, limit groove. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the embodiments.

[0028] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0029] See also Figure 1 The utility model provides a multi-joint rotary valve injection pump, comprising a driving mechanism 10, a rotary valve 20, a lifting mechanism 30 and an injector 40 mounted on a mounting plate 50;

[0030] See also Figure 3 and Figure 4, a plurality of drive mechanisms 10 can be connected in parallel, and the drive mechanism 10 includes a first motor 110, a driving shaft 120 and two driven shafts 130, the driving shaft 120 is mounted on the output shaft 111 of the first motor 110, a driving gear 121 is mounted on the driving shaft 120, and driven gears 131 are mounted on the two driven shafts 130, and both sides of the driving gear 121 are respectively meshed and connected with the sides of the two driven gears 131 that are close to each other;

[0031] See also Figure 3 and Figure 4 The driving shaft 120 and the two driven shafts 130 are installed in the first housing 101 through bearings 100. The ends of the driving shaft 120 and the driven shaft 130 are connected to a transition shaft 140. The transition shaft 140 is connected to a rotating block 150, and the rotating block 150 can rotate with the transition shaft 140.

[0032] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 The rotary valve 20 includes an adjusting block 210 and a valve head 220. The valve head 220 is provided with a plurality of flow channels 221. A connecting groove 211 is provided on the adjusting block 210. The side of the connecting groove 211 close to the center of the circle is connected to the injector flow channel 222. The connecting groove 211 can connect any flow channel 221 with the injector flow channel 222. A groove 212 is provided on the side of the adjusting block 210 away from the valve head 220. A protrusion 151 matching the groove 212 on the adjusting block 210 is provided on one side of the rotating block 150. The adjusting block 210 is driven by the rotation of the rotating block 150, so that the side of the connecting groove 211 away from the center of the circle can be connected to the flow channels 221 at different positions, thereby adjusting the flow direction of the liquid.

[0033] See also Figure 2 and Figure 5 The lifting mechanism 30 includes a No. 2 motor 310, a threaded rod 320, a threaded sleeve 330, and a No. 1 lifting block 340. The threaded rod 320 is mounted on the output shaft of the No. 2 motor 310. The threaded sleeve 330 is threadedly sleeved on the threaded rod 320. The threaded sleeve 330 is fixed to the No. 1 lifting block 340 by bolts. The No. 1 lifting block 340 is mounted on a slider 350. The slider 350 is slidably arranged on a slide rail 360. The slide rail 360 is mounted on a mounting plate 50. A limiting groove 501 is arranged on the mounting plate 50. A connecting block 351 on the slider 350 passes through the limiting groove 501. The No. 2 lifting block 370 is connected to the connecting block 351.

[0034] By driving the No. 2 motor 310, the No. 2 motor 310 drives the threaded rod 320 to rotate, and the threaded rod 320 drives the No. 1 lifting block 340 to move up and down through the threaded sleeve 330. The No. 1 lifting block 340 drives the No. 2 lifting block 370 through the connecting block 351. The No. 2 motor 310 is set below the No. 1 motor 110 to save space.

[0035] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 The injector 40 is sleeved on the piston rod 410, the bottom of the piston rod 410 is installed on the No. 2 lifting block 370, and the interior of the injector 40 is connected with the injector flow channel 222 in the valve head 220; when the No. 2 lifting block 370 is raised or lowered, the piston rod 410 is driven to move up and down, so that the injector 40 can absorb and drain water.

[0036] See also Figure 4 A fixing groove 4101 is provided at the bottom end of the piston rod 410 , and the second lifting block 370 is fixed on the second lifting block 370 by the fixing bolt 371 abutting against the fixing groove 4101 .

[0037] The working principle and use process of the utility model are as follows: start the No. 1 motor 110, the No. 1 motor 110 drives the driven gear 131 to rotate through the driving gear 121 of the driving shaft 120, the driven gear 131 drives the driven shaft 130 to rotate, the driven shaft 130 drives the rotating block 150 to rotate through the transition shaft 140, the rotating block 150 drives the adjusting block 210 to rotate, so that the connecting groove 211 in the adjusting block 210 is connected with the first flow channel 221, and then the first flow channel 221 is connected with the injector flow channel 222.

[0038] Start the No. 2 motor 310, which drives the threaded rod 320 to rotate. The threaded rod 320 drives the No. 1 lifting block 340 to move up and down through the threaded sleeve 330. The No. 1 lifting block 340 drives the No. 2 lifting block 370 to move up and down through the connecting block 351. When the No. 2 lifting block 370 descends, the piston rod 410 extends downward from the injector 40, so that negative pressure is generated inside the injector 40, so that the liquid flows into the injector 40 through the first flow channel 221 under external pressure.

[0039] The No. 1 motor 110 is used again to control the adjustment block 210 to rotate so that the injector flow channel 222 is connected to the second flow channel 221. The piston rod 410 is then controlled to move upward, and the liquid inside the injector 40 will enter the second flow channel 221 and be discharged. The above operation is repeated to complete the liquid transportation.

[0040] By means of the No. 1 motor 110, the water inlet and outlet pipes for the flow of liquid can be changed, thereby improving the flexibility of the device and enabling it to adapt to different working requirements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-rotary valve injection pump, characterized in that: It includes a rotary valve (20) and an injector (40); The rotary valve (20) comprises an adjusting block (210) and a valve head (220), the valve head (220) being provided with a plurality of flow channels (221), the adjusting block (210) being provided with a connecting groove (211), the connecting groove (211) being connected to an injector flow channel (222), and the connecting groove (211) being away from the injector flow channel (222) and being able to be connected to any one of the flow channels (221); The sample injector (40) is sleeved on a piston rod (410), and the piston rod (410) can move up and down.

2. A multi-rotary valve injection pump according to claim 1, characterized in that: The piston rod (410) is mounted on the lifting mechanism (30). The lifting mechanism (30) comprises a No. 2 motor (310), a threaded rod (320), a threaded sleeve (330), and a No. 1 lifting block (340). The threaded rod (320) is mounted on the output shaft of the No. 2 motor (310). The threaded sleeve (330) is threadedly sleeved on the threaded rod (320). The threaded sleeve (330) is mounted on the No. 1 lifting block (340). The No. 1 lifting block (340) is slidably arranged on the mounting plate (50).

3. A multi-rotary valve injection pump according to claim 2, characterized in that: The first lifting block (340) is mounted on a sliding block (350), the sliding block (350) is slidably disposed on a sliding rail (360), and the sliding rail (360) is mounted on a mounting plate (50).

4. A multi-rotary valve injection pump according to claim 3, characterized in that: A limiting groove (501) is provided on the mounting plate (50), a connecting block (351) on the sliding block (350) passes through the limiting groove (501), and a second lifting block (370) is connected to the connecting block (351).

5. A multi-rotary valve injection pump according to claim 4, characterized in that: A fixing groove (4101) is provided at the bottom end of the piston rod (410), and the bottom of the No. 2 lifting block (370) is mounted on the No. 2 lifting block (370).

6. A multi-rotary valve injection pump according to claim 1, characterized in that: The rotary valve (20) is mounted on a driving mechanism (10). The driving mechanism (10) comprises a first motor (110), a driving shaft (120) and two driven shafts (130). The driving shaft (120) is mounted on an output shaft (111) of the first motor (110). A driving gear (121) is mounted on the driving shaft (120). The two driven shafts (130) are mounted on driven gears (131). Two sides of the driving gear (121) are respectively meshed and connected with the sides of the two driven gears (131) that are close to each other.

7. A multi-rotary valve injection pump according to claim 6, characterized in that: There are multiple driving mechanisms (10).

8. The multi-rotary valve injection pump according to claim 6, characterized in that: The ends of the driving shaft (120) and the driven shaft (130) are both connected to a transition shaft (140), the transition shaft (140) is connected to a rotating block (150), and the rotating block (150) is provided with a protrusion (151).

9. A multi-rotary valve injection pump according to claim 8, characterized in that: A groove (212) is provided on a side of the regulating block (210) away from the valve head (220), and the groove (212) is adapted to fit the protrusion (151).

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