Single-drive eight-connection injection pump

Abstract

The utility model discloses a single-drive eight-link injection pump, which comprises an injection pump assembly and a drive assembly, the injection pump assembly comprises a structural plate group, eight groups of injectors vertically supported by the structural plate group, and electromagnetic valves matched with liquid pipelines of the injectors for use, and each group of injectors is provided with a piston. The driving assembly is located above the injection pump assembly, the driving assembly is composed of a power part and a spiral transmission part, and the spiral transmission part is used for driving the pistons to move up and down so as to enable the eight sets of injectors to achieve eight linkage; the multi-channel liquid supply device has the advantages of being compact and light in structure and small in occupied space, can drive a plurality of injectors to operate through one motor to achieve the functions of a plurality of injection pumps, reduces energy consumption, saves power resources, is low in cost, and achieves the purpose that one motor provides multi-channel liquid supply in combination with flexible switching of the electromagnetic valves.

Description

Technical Field

[0001] The utility model relates to the field of injection pump facilities, and particularly relates to a single-drive eight-channel injection pump. Background Technique

[0002] An injection pump is composed of a stepper motor and its driver, a lead screw and a bracket, etc. It has a reciprocating lead screw and a nut, so it is also called a lead screw pump. The nut is connected to the piston of the syringe. The syringe contains a liquid such as a medicine solution, and realizes high-precision, stable and pulsation-free liquid transmission. At present, most injection pumps are composed of one motor driving one syringe. In the case of multiple injection pumps, this combination requires multiple motors, resulting in waste of resources and increased energy consumption, and the integrated space occupied is relatively large. Therefore, a single-drive eight-channel injection pump is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a single-drive eight-channel injection pump to solve the problems of large energy consumption and large integrated space occupied mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A single-drive eight-channel injection pump, comprising:

[0006] An injection pump assembly, the injection pump assembly includes a structural plate group, eight groups of syringes vertically supported by the structural plate group, and electromagnetic valves used in cooperation with the liquid pipelines of the syringes, and each group of syringes has a piston;

[0007] A driving assembly, the driving assembly is located above the injection pump assembly, and the driving assembly is composed of a power part and a screw transmission part, and the screw transmission part is used to drive the piston to move up and down so that the eight groups of syringes achieve eight-linkage.

[0008] Further, the structural plate group includes a fixing plate, a first support plate and a second support plate vertically connected to the fixing plate, a mounting plate horizontally connected between the first support plate and the second support plate, and a cross plate mounted on the top of the first support plate. The eight groups of syringes are arranged vertically side by side between the mounting plate and the fixing plate. Through holes for accommodating the pistons are spaced apart on the top of the mounting plate; a slide rail is vertically connected to the top of the second support plate, and the top of the plate body of the slide rail is connected to the bottom of the cross plate.

[0009] Further, the screw drive part includes a screw rod that vertically passes through the transverse plate and the mounting plate from top to bottom in sequence and is connected to the middle of the top end of the fixed plate, and a sliding part that is located between the transverse plate and the mounting plate and is screwed on the outer surface of the screw rod; bearing plates and support plates are respectively installed at the top of the transverse plate, and a driven wheel is fixed at a position above the bearing plate where the top end of the screw rod extends; the power part adopts a motor, which is installed at the bottom of the support plate, and the output shaft of the motor extends above the support plate and is installed with a driving wheel, and the driving wheel and the driven wheel are connected by a synchronous belt drive.

[0010] Further, the sliding part includes a movable block and a connecting plate connected to the bottom of the movable block. The bottom of the plate body of the connecting plate is connected to eight pistons, and a chute is opened on the right side of the movable block and the connecting plate, and the cavity of the chute is movably attached to the surface of the slide rail.

[0011] Further, eight electromagnetic valves are provided, and the eight electromagnetic valves are installed on the vertical plate, and the vertical plate is fixed on the right side of the second support plate.

[0012] The beneficial effects of the present utility model are as follows: The present utility model has the characteristics of compact and light structure and small occupied space. It can drive multiple syringes to run through one motor to realize the functions of multiple injection pumps, reduce energy consumption and save power resources, with low cost. And combined with the flexible switching of the electromagnetic valve, it realizes the purpose of providing multiple liquid supplies by one motor, has a wide range of applications, and is conducive to the popularization and use of this single-drive eight-way injection pump. Description of the Drawings

[0013] Figure 1 is a three-dimensional structure diagram of the single-drive eight-way injection pump of the present utility model;

[0014] Figure 2 is a front view of the structure of the single-drive eight-way injection pump of the present utility model;

[0015] Figure 3 For the present utility model Figure 2 is a sectional view of the structure of part A-A.

[0016] In the figure: 1 mounting hole, 2 syringe, 3 piston, 4 fastener, 5 mounting plate, 6 connecting plate, 7 fixed plate, 8 bearing plate, 9 motor, 10 driven wheel, 11 electromagnetic valve, 12 support plate, 13 first support plate, 14 second support plate, 15 slide rail, 16 induction piece, 17 vertical plate, 18 seat plate, 19 lower bearing, 20 gasket, 21 movable block, 22 driving wheel, 23 screw rod, 24 transverse plate, 25 synchronous belt. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-3 , which provides a technical solution of the present invention. A single-drive eight-channel syringe pump includes a syringe pump assembly and a drive assembly. The syringe pump assembly includes a structural plate group, eight groups of syringes 2 vertically supported by the structural plate group, and solenoid valves 11 used in cooperation with the liquid pipelines of the syringes 2. Each group of syringes 2 has a piston 3. The mentioned drive assembly is located above the syringe pump assembly. The drive assembly is composed of a power part and a screw transmission part, and the screw transmission part is used to drive the piston 3 to move up and down so that the eight groups of syringes 2 achieve eight-linkage. Among them, there are eight groups of solenoid valves 11. The eight groups of solenoid valves 11 are installed on the vertical plate 17, and the vertical plate 17 is fixed on the right side of the second support plate 14.

[0019] In this embodiment, the mentioned structural plate group includes a fixed plate 7, a first support plate 13 and a second support plate 14 vertically connected to the fixed plate 7, a mounting plate 5 horizontally connected between the first support plate 13 and the second support plate 14, and a cross plate 24 installed on the top of the first support plate 13. The plate body length of the second support plate 14 does not exceed half of the length of the first support plate 13. The eight groups of syringes 2 are arranged vertically side by side between the mounting plate 5 and the fixed plate 7. Through holes for accommodating the piston 3 are spaced apart on the top of the mounting plate 5. A slide rail 15 is vertically connected to the top of the second support plate 14. The top of the plate body of the slide rail 15 is connected to the bottom of the cross plate 24. A notch is provided on the right side of the plate body of the mounting plate 5, and the notch is movably attached to the surface of the slide rail 15. Among them, mounting holes 1 for installing the syringes 2 are provided on the top of the mentioned fixed plate 7. A gasket 20 is provided at the bottom of the outer wall of the syringe 2. The gasket 20 is placed inside the mounting hole 1. The setting of the gasket 20 can reduce the contact wear generated between the syringe 2 and the mounting hole 1, and at the same time can improve the stability of the syringe 2 in the cavity of the mounting hole 1. Fasteners 4 are provided at the bottom of the fixed plate 7. The fasteners 4 are used to install the syringe 2 more firmly on the fixed plate 7. An induction sheet 16 is provided on the top of the mounting plate 5. The induction sheet 16 is a position sensor. The mentioned fasteners 4 are, but not limited to, screws.

[0020] In this embodiment, the mentioned screw drive part includes a screw rod 23 that vertically passes through the cross plate 24 and the mounting plate 5 from top to bottom in sequence and is connected to the middle part of the top end of the fixing plate 7, and a sliding part that is located between the cross plate 24 and the mounting plate 5 and is screwed on the outer surface of the screw rod 23; bearing plates 8 and support plates 12 are respectively installed at the top of the cross plate 24, and a driven wheel 10 is fixed at a position above the bearing plate 8 where the top end of the screw rod 23 extends; the power part uses a motor 9, which is installed at the bottom of the support plate 12, and the output shaft of the motor 9 extends above the support plate 12 and is installed with a driving wheel 22, and the driving wheel 22 and the driven wheel 10 are connected by a synchronous belt 25 for transmission; a lower bearing 19 is arranged in the middle of the top end of the mentioned fixing plate 7, and the lower bearing 19 is sleeved on the bottom end of the screw rod 23; a seat plate 18 is installed at the top of the mentioned bearing plate 8; among them, the mentioned sliding part includes a movable block 21 and a connecting plate 6 connected to the bottom of the movable block 21, the bottom of the plate body of the connecting plate 6 is connected to eight groups of pistons 3, and a chute is opened on the right side of the movable block 21 and the connecting plate 6, and the cavity of the chute is movably attached to the surface of the slide rail 15, and the area of the block body of the movable block 21 does not exceed the top plate area of the connecting plate 6; through the cooperation of the slide rail 15 and the chute, the movable block 21 and the connecting plate 6 can move up and down more smoothly along the axis direction of the screw rod 23.

[0021] For this single-drive eight-way syringe pump, the motor 9 uses but is not limited to a forward and reverse motor of type XWD3-35-1.5KW or type ASTK-60W. The operating principle of the forward and reverse motor is a well-known technology in the market, so it will not be elaborated here; when the motor 9 operates, it drives the screw rod 23 to rotate clockwise or counterclockwise through the transmission of the synchronous belt 25. Among them, when the output shaft of the motor 9 rotates clockwise, the sliding part composed of the movable block 21 and the connecting plate 6 rises under the spiral drive of the screw rod 23. When the induction piece 16 senses that the sliding part will stick to the bottom surface of the cross plate 24, the clockwise rotation of the output shaft of the motor 9 is stopped and changed to the counterclockwise rotation of the output shaft of the motor 9. At this time, the screw rod 23 rotates counterclockwise to drive the sliding part to descend, and the piston 3 is driven to press down during the descending process to push the syringe 2 to realize the function of the syringe pump. The solenoid valve 11 is used to control the liquid pipeline of the syringe 2. When the bottom surface of the connecting plate 6 sticks to the mounting plate 5 and is sensed by the induction piece 16, the motor 9 is controlled to stop, so as to complete the function of the syringe pump; the solenoid valve 11 uses but is not limited to a two-position three-way solenoid valve.

[0022] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0023] The above embodiments only represent the preferred embodiments of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all belong to the protection scope of the present utility model. In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection. Among them, there are various ways of detachable installation. For example, it can be through the cooperation of plugging and buckling, or through the way of bolt connection, etc.

[0024] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A single-drive eight-unit syringe pump, characterized in that: include: A syringe pump assembly, the syringe pump assembly comprising a structural plate group, eight groups of syringes vertically supported by the structural plate group, and a solenoid valve used in conjunction with the syringe liquid pipeline, and each group of syringes has a piston; The driving assembly is located above the injection pump assembly. The driving assembly is composed of a power unit and a spiral transmission unit, and the spiral transmission unit is used to drive the piston to move up and down so that eight groups of syringes can achieve eight linkages.

2. The single-drive eight-unit syringe pump according to claim 1, characterized in that: The structural plate group includes a fixed plate, a first support plate and a second support plate vertically connected to the fixed plate, a mounting plate horizontally connected between the first support plate and the second support plate, and a cross plate installed on the top of the first support plate. Eight groups of syringes are arranged vertically side by side between the mounting plate and the fixed plate. Through holes for accommodating pistons are spaced apart on the top of the mounting plate. A slide rail is vertically connected to the top of the second support plate, and the top of the slide rail is connected to the bottom of the cross plate.

3. The single-drive eight-unit syringe pump according to claim 1, characterized in that: The spiral transmission part includes a screw rod that vertically passes through the cross plate and the mounting plate from top to bottom and is connected to the middle part of the top end of the fixed plate, and a sliding part that is located between the cross plate and the mounting plate and is screwed to the outer surface of the screw rod; the top of the cross plate is respectively installed with a bearing plate and a support plate, and the top end of the screw rod extends out of the position above the bearing plate and a driven wheel is fixed thereon; the power part adopts a motor, which is installed at the bottom of the support plate, and the output shaft of the motor extends out of the position above the support plate and a driving wheel is installed thereon, and the driving wheel and the driven wheel are connected by a synchronous belt drive.

4. The single-drive eight-unit syringe pump according to claim 3, characterized in that: The sliding part includes a movable block and a connecting plate connected to the bottom of the movable block. The bottom of the connecting plate is connected to eight groups of pistons, and a sliding groove is opened on the right side of the movable block and the connecting plate. The groove cavity of the sliding groove is movably attached to the surface of the slide rail.

5. The single-drive eight-unit syringe pump according to claim 1, characterized in that: The solenoid valves are provided in eight groups, and the eight groups of solenoid valves are installed on the vertical plate, and the vertical plate is fixed on the right side of the second supporting plate.

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