CN111638093A

CN111638093A - Large-capacity injector feeding device

Info

Publication number: CN111638093A
Application number: CN202010477462.8A
Authority: CN
Inventors: 陈玮; 曲宝林; 马娜
Original assignee: Institute of Pharmacology and Toxicology of AMMS
Current assignee: Institute of Pharmacology and Toxicology of AMMS; Academy of Military Medical Sciences AMMS of PLA
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-09-08

Abstract

The invention discloses a large-capacity injector feeding device, which comprises a supporting plate, wherein the supporting plate is transversely arranged, a motor fixing plate and a front positioning plate are fixedly arranged at two ends of the supporting plate, a bearing is arranged on the motor fixing plate, and a positioning sliding sleeve is fixedly arranged on the front positioning plate; the injector is arranged at the lower side of the supporting plate and comprises a cylinder body and a push rod; the motor is fixed on the motor fixing plate; a transmission device; the pushing device comprises a positioning pipe, the positioning pipe is arranged in the positioning sliding sleeve, an inner sliding sleeve is movably arranged in the positioning pipe, and the pushing device is fixedly connected with the push rod; the screw rod is positioned and supported by the bearing and the inner sliding sleeve; and a connection box. The device has the advantages of ingenious design, small volume, low noise, stable operation and adjustable speed, and can be widely used for quantitatively collecting and conveying fluid by an analytical instrument.

Description

Large-capacity injector feeding device

Technical Field

The invention relates to the technical field of analytical instruments, in particular to a large-capacity injector feeding device.

Background

With the continuous development of modern industry and agriculture, a large amount of harmful substances are discharged into air and water to deteriorate the quality of the harmful substances, so that a corresponding protective measure is provided for guiding people, and a modern analysis technology with high efficiency, rapidness and high sensitivity is gradually popularized and widely applied.

In the design of the existing fluid sample analyzer, most of sampling, storing and sample sending are manually operated, the automation degree is low, the time is long, the analysis of large sample volume is difficult to meet, and meanwhile, the sampling, storing and sample sending all need to be operated according to a certain time sequence, so that the integrated large-capacity injector flow control device is also necessary for simplifying the application of customers.

Disclosure of Invention

In order to solve the above problems, the present invention adopts the following technical solutions.

A large-capacity injector feeding device comprises a supporting plate, wherein the supporting plate is transversely arranged, a motor fixing plate and a front positioning plate are fixedly arranged at two ends of the supporting plate, a bearing is arranged on the motor fixing plate, and a positioning sliding sleeve is fixedly arranged on the front positioning plate; the injector is arranged at the lower side of the supporting plate and comprises a cylinder body and a push rod; the motor is fixed on the motor fixing plate; a transmission device; the pushing device comprises a positioning pipe, the positioning pipe is arranged in the positioning sliding sleeve, an inner sliding sleeve is movably arranged in the positioning pipe, and the pushing device is fixedly connected with the push rod; the screw rod is positioned and supported by the bearing and the inner sliding sleeve; and the connecting box is internally and directionally provided with a screw, the screw is in compression contact with the screw rod, the motor drives the screw rod to drive the connecting box to do linear reciprocating motion through the transmission device, and the connecting box is connected with the pushing device so as to push the push rod to realize the feeding of the injector.

Further, still include the motor drive board, this motor drive board fixed mounting in the backup pad and with motor electric connection be used for controlling the rotation of motor, motor drive board fixed mounting has the opto-coupler.

Further, transmission includes little band pulley and big band pulley, and little band pulley passes through the hold-in range with big band pulley and connects, motor drive shaft interference fit installs little band pulley, and big band pulley is connected with the one end of lead screw.

Furthermore, thrust unit still includes position sleeve and push pedal, connecting box and registration arm all with position sleeve fixed connection, the registration arm is connected and directional the slip in the position sleeve with the one end interference fit of push pedal, the other end fixed connection push rod of this push pedal.

Compared with the prior art, the invention has the advantages that:

the invention realizes the integration of the system structure, the transmission is accurate and reliable, the fixed point support and the positioning sliding function of the inner sliding sleeve are combined, the positioning support and the spiral transmission torque of the screw nut are combined, the whole device is more compact, in the concrete implementation of the invention, the inner sliding sleeve and the positioning sliding sleeve are both processed by polytetrafluoroethylene, the front positioning plate and the connecting box special-shaped structural member are both processed by molding, the aluminum profile supporting plate is processed by adopting an aluminum profile die stretching forming process, the beneficial effect of adopting the processing scheme is that the invention adopts the polytetrafluoroethylene to ensure that the material has moderate hardness, no deformation and easy positioning, each relative sliding part realizes self-lubrication, different processing processes can ensure the size precision and reduce the cost on the premise of meeting the functional requirements.

Drawings

FIG. 1 is a front view of a high capacity syringe feeder of the present invention;

FIG. 2 is a partial schematic view of the structure of FIG. 1;

FIG. 3 is a structural sectional view of a high-capacity syringe feeding device of the present invention;

FIG. 4 is a bottom view of the high capacity syringe feeder of the present invention;

FIG. 5 is a right side view of the high capacity syringe feed apparatus of the present invention;

FIG. 6 is a left side view of the high capacity syringe feed device of the present invention;

fig. 7 is a perspective view of a large capacity syringe feeding device of the present invention.

The reference numbers in the figures illustrate:

1. a support plate; 2. a motor fixing plate; 3. a front positioning plate; 4. a bearing; 5. positioning the sliding sleeve; 6. a barrel; 7. a push rod; 8. a motor; 9. a positioning tube; 10. an inner sliding sleeve; 11. a screw rod; 12. a connecting box; 13. a nut; 14. a motor drive plate; 15. an optical coupler; 16. a small belt pulley; 17. a large belt pulley; 18. a synchronous belt; 19. a positioning sleeve; 20. pushing the plate; 21. a lower bracket; 22. a syringe retainer ring; 23. a positioning spring; 24. pressing a spring plate; 25. and (5) positioning the pressing sheet.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.

A large-capacity syringe feeding device, as shown in figures 1-7, comprises a supporting plate 1, a syringe, a motor 8, a transmission device, a pushing device, a screw rod 11 and a connecting box 12.

Wherein, backup pad 1 transversely sets up, and its both ends have motor fixed plate 2 and preceding locating plate 3 through screw fixed mounting, inlays on the motor fixed plate 2 and is equipped with bearing 4, is provided with positioning sliding sleeve 5 through the fix with screw on the preceding locating plate 3.

The injector is fixedly arranged at the lower side of the support plate 1 through an injector fixing ring 22, the front end of the injector is also fixed through a lower bracket 21, the support plate 1 is fixedly connected with the lower bracket 21 through a screw, and the injector comprises a cylinder 6 and a push rod 7.

The motor 8 is fixedly arranged on the motor fixing plate 2 through a motor soft pad, a motor hard pad and a motor fixing screw.

The pushing device comprises a positioning tube 9, the positioning tube 9 is arranged in the positioning sliding sleeve 5, an inner sliding sleeve 10 is movably arranged in the positioning tube 9, and the pushing device is fixedly connected with the push rod 7; the screw rod 11 is positioned and supported by the bearing 4 and the inner sliding sleeve 10; the screw 13 is arranged in the connecting box 12 in an oriented mode, the tooth mouth of the screw 13 is tightly pressed to the screw rod 11 through the positioning spring 23, the motor 8 drives the screw rod 11 to drive the connecting box 12 to do linear reciprocating motion through the transmission device, and the connecting box 12 is connected with the pushing device so as to push the push rod 7 to achieve injector feeding.

In this embodiment, the main structure further includes a motor drive board 14, the motor drive board 14 is fixedly mounted on the support plate 1 and electrically connected to the motor 8 for controlling the rotation of the motor 8, and the motor drive board 14 is fixedly mounted with an optocoupler 15.

In this embodiment, transmission includes small belt wheel 16 and big belt wheel 17, and small belt wheel 16 and big belt wheel 17 pass through hold-in range 18 and connect, realize transmission function, and motor 8 transmission shaft interference fit installs small belt wheel 16, and big belt wheel 17 is connected with the one end of lead screw 11.

In this embodiment, the pushing device further includes a positioning sleeve 19, a spring pressing piece 24, a positioning pressing piece 25 and a pushing plate 20, the spring pressing piece 24 is fixed on the connecting box 12 through a screw, the positioning pressing piece 25 is fixedly connected with the front positioning plate 3 through a positioning pressing piece screw, the connecting box 12 and the positioning tube 9 are both fixedly connected with the positioning sleeve 19, the positioning tube 9 is connected with one end of the pushing plate 20 in an interference fit manner and slides in the positioning sliding sleeve 5 in an oriented manner, and the other end of the pushing plate 20 is fixedly connected with the pushing rod 7.

The inner sliding sleeve 10 and the positioning sliding sleeve 5 are both formed by processing polytetrafluoroethylene, the front positioning plate 3 and the connecting box 12 are both molded, and the supporting plate 1 is processed by adopting an aluminum profile die stretch forming process.

The working principle of the large-capacity injector feeding device is as follows:

firstly, a large-capacity syringe barrel is placed on a lower support 21, the end part of a syringe push rod 7 is connected with a push plate 20, the large-capacity syringe is positioned through a syringe fixing ring 22, a starting motor 8 transmits torque to a lead screw 11 through a synchronous belt 18, the lead screw 11 rotates relative to a nut 13 in a connecting box 12 to push a positioning tube 9 to slide along a straight line in a positioning sliding sleeve 5, and the push plate 20 in interference fit with the positioning tube 9 drives the syringe push rod 7 to perform suction and discharge actions, so that the fluid sampling and output functions are realized.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A high capacity syringe feed device characterized by: the motor positioning device comprises a supporting plate (1), wherein the supporting plate (1) is transversely arranged, a motor fixing plate (2) and a front positioning plate (3) are fixedly arranged at two ends of the supporting plate, a bearing (4) is arranged on the motor fixing plate (2), and a positioning sliding sleeve (5) is fixedly arranged on the front positioning plate (3); the injector is arranged at the lower side of the supporting plate (1) and comprises a cylinder (6) and a push rod (7); the motor (8) is fixed on the motor fixing plate (2); a transmission device; the pushing device comprises a positioning tube (9), the positioning tube (9) is arranged in the positioning sliding sleeve (5), an inner sliding sleeve (10) is movably arranged in the positioning tube (9), and the pushing device is fixedly connected with the push rod (7); the screw rod (11), the screw rod (11) is positioned and supported by the bearing (4) and the inner sliding sleeve (10); and the connecting box (12), the screw (13) is installed in the connecting box (12) in an oriented mode, the screw (13) is in pressing contact with the screw rod (11), the motor (8) drives the screw rod (11) to drive the connecting box (12) to do linear reciprocating motion through the transmission device, and the connecting box (12) is connected with the pushing device so as to push the push rod (7) to achieve feeding of the injector.

2. A high capacity syringe feed device as claimed in claim 1, wherein: still include motor drive board (14), this motor drive board (14) fixed mounting just with motor (8) electric connection on backup pad (1) is used for controlling the rotation of motor (8), motor drive board (14) fixed mounting has opto-coupler (15).

3. A high capacity syringe feed device as claimed in claim 1, wherein: the transmission device comprises a small belt wheel (16) and a large belt wheel (17), the small belt wheel (16) and the large belt wheel (17) are connected through a synchronous belt (18), the small belt wheel (16) is installed on a transmission shaft of the motor (8) in an interference fit mode, and the large belt wheel (17) is connected with one end of the screw rod (11).

4. A high capacity syringe feed device as claimed in claim 1, wherein: the pushing device further comprises a positioning sleeve (19) and a push plate (20), the connecting box (12) and the positioning pipe (9) are fixedly connected with the positioning sleeve (19), the positioning pipe (9) is connected with one end of the push plate (20) in an interference fit mode and slides in the positioning sliding sleeve (5) in an oriented mode, and the other end of the push plate (20) is fixedly connected with the push rod (7).