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CN-224216652-U - Continuous microsyringe

CN224216652UCN 224216652 UCN224216652 UCN 224216652UCN-224216652-U

Abstract

The utility model relates to the technical field of metering verification and discloses a continuous microsyringe, which comprises a needle tube, wherein a clamping block is fixedly connected to the outer wall of the needle tube, a rotating plate is connected to the outer wall of the clamping block in a sliding manner, a base is connected to the outer wall of the rotating plate in a rotating manner, a spring body is fixedly connected to the upper surface of the base, a connecting rod is fixedly connected to the lower surface of the base, a pushing block is fixedly connected to the lower surface of the connecting rod, a clamping jaw is connected to the inner wall of the pushing block in a rotating manner, a limiting rod is connected to the inner wall of the clamping jaw in a sliding manner, two ends of the limiting rod are fixedly connected to the inner wall of the needle tube, a needle is connected to the outer wall of the clamping jaw in a sliding manner, and a quantitative assembly is arranged on the outer wall of the needle tube. According to the needle tube, the needle tube is inserted into the needle head, the rotating plate is pulled upwards to drive the base to enable the connecting rod to move, the spring body is elastically deformed, and the connecting rod drives the pushing block to enable the clamping jaw to clamp the needle head, so that the needle head can be quickly disassembled and assembled, and the needle head is suitable for different kinds of needle heads.

Inventors

  • DONG WANKUI
  • HUANG YUE
  • WANG SONG

Assignees

  • 上海化学工业检验检测有限公司

Dates

Publication Date
20260508
Application Date
20250527

Claims (8)

  1. 1. The utility model provides a continuity microsyringe, includes needle tubing (1), its characterized in that, the outer wall fixedly connected with fixture block (11) of needle tubing (1), the outer wall sliding connection of fixture block (11) has rotor plate (12), the outer wall of rotor plate (12) rotates and is connected with base (13), the upper surface fixedly connected with spring body (14) of base (13), the outer wall fixedly connected with of spring body (14) is at the inner wall of needle tubing (1), the lower surface fixedly connected with connecting rod (15) of base (13), the lower surface fixedly connected with ejector pad (16) of connecting rod (15), the inner wall rotation of ejector pad (16) is connected with clamping jaw (17), the inner wall sliding connection of clamping jaw (17) has gag lever post (18), the both ends fixedly connected with at the inner wall of needle (1) of gag lever post (18), the outer wall sliding connection of clamping jaw (17) has syringe needle (19), the inner wall sliding connection at the outer wall of needle (1), the outer wall of needle (1) is equipped with quantification subassembly (2).
  2. 2. The continuous microsyringe as claimed in claim 1, wherein the quantitative assembly (2) comprises a quantitative device (21), the inner wall of the quantitative device (21) is slidably connected to the outer wall of the needle tube (1), the lower surface of the quantitative device (21) is slidably connected to the upper surface of the needle (19), and the inner wall of the quantitative device (21) is in threaded connection with a threaded rod (22).
  3. 3. The continuous microsyringe as claimed in claim 2, wherein the two ends of the threaded rod (22) are rotatably connected with bearing blocks (23), the inner wall of the bearing blocks (23) is rotatably connected with the outer wall of the worm gear (24), the outer wall of the threaded rod (22) is provided with the worm gear (24), the worm gear (24) is fixedly connected with a knob (25), and the outer wall of the bearing blocks (23) is provided with a clamping assembly (3).
  4. 4. A continuous micro-sampler according to claim 3 and characterized in that the clamping assembly (3) comprises a bottom shell (31), wherein the inner wall of the bottom shell (31) is slidably connected to the outer wall of the bearing block (23), the inner wall of the bottom shell (31) is slidably connected to the outer wall of the needle (19), the inner wall of the bottom shell (31) is slidably connected with a pressing block (32), and the upper surface of the pressing block (32) is slidably connected to the lower surface of the bearing block (23).
  5. 5. The continuous microsyringe as claimed in claim 4, wherein the outer wall of the lower pressure block (32) is connected with a spring rod (33) in a sliding manner, and the outer wall of the spring rod (33) is connected with the inner wall of the clamping assembly (3) in a sliding manner.
  6. 6. The continuous micro-sampler of claim 5 wherein the outer wall of the left side of the spring rod (33) is fixedly connected with a moving block (34), and the inner wall of the moving block (34) is slidably connected with a rotating block (35).
  7. 7. The continuous microsyringe as claimed in claim 6, wherein the inner wall of the rotary block (35) is fixedly connected with a rotary shaft (36), and two ends of the rotary shaft (36) are rotatably connected with the inner wall of the clamping assembly (3).
  8. 8. The continuous microsyringe as claimed in claim 7, wherein the inner wall of the rotary block (35) is rotatably connected with a fixed block (37), and the outer wall of the fixed block (37) is fixedly connected with a clamping block (38).

Description

Continuous microsyringe Technical Field The utility model relates to the technical field of sample injectors, in particular to a continuous microsyringe. Background The sample injector is a device capable of quantitatively feeding an analysis sample into a chromatographic column in a chromatographic system, and comprises various specifications, wherein the trace sample injector can accurately measure a trace sample, so that the sample injector has a finer structure and a higher price, and in the process of performing chromatographic tests, the sample injection is required to be quick and accurate, and the repeatability is required to be very high, so that the accuracy of the tests can be ensured. According to the retrieval, chinese patent publication No. CN211825878U discloses a quantitative microsyringe for metering and verification, which comprises a base, a liftable platform, an outer sleeve and a microsyringe body, wherein a disc is arranged above the outer side of the microsyringe body, sliding blocks are fixedly connected to two sides of the outer wall of the disc, an optical glass magnifier is fixedly connected between the sliding blocks, sliding rails are arranged on two sides of the inner wall of the outer sleeve, the other side of the sliding blocks is in sliding connection with the sliding rails, a hand push rod is fixedly connected to the upper side of the disc, the top end of the hand push rod penetrates through the outer sleeve and extends to the upper outside of the outer sleeve, and a reset spring is sleeved above the outer wall of the hand push rod. The quantitative microsyringe for metering verification greatly improves the reading accuracy of the microsyringe, can effectively ensure that the reading has no angle deviation, adopts the positioning track push rod to ensure the direction of the push rod force, can effectively avoid the direction of the push rod from being incorrect, and prolongs the service life of the microsyringe. In the prior art, the needle fixing mode of the traditional sample injector is generally simpler, the sample injection needle is difficult to adapt to sample injection needles of different specifications and shapes, when different needles are needed, different needle tubes are needed to be used, and the problem of low applicability of the sample injector is caused. Disclosure of utility model In order to make up for the defects, the utility model provides a continuous microsyringe, which aims to solve the problems that the needle of the microsyringe in the prior art is relatively simple in mounting mode, so that the needle tube is difficult to adapt to sampling needles with different specifications and shapes, and when different needle tubes are needed, different needle tubes are needed to be used, and the applicability of the microsyringe is low. In order to achieve the purpose, the continuous microsyringe comprises a needle tube, wherein a clamping block is fixedly connected to the outer wall of the needle tube, a rotating plate is connected to the outer wall of the clamping block in a sliding mode, a base is connected to the outer wall of the rotating plate in a rotating mode, a spring body is fixedly connected to the upper surface of the base, the outer wall of the spring body is fixedly connected to the inner wall of the needle tube, a connecting rod is fixedly connected to the lower surface of the base, a pushing block is fixedly connected to the lower surface of the connecting rod, a clamping jaw is connected to the inner wall of the pushing block in a rotating mode, a limiting rod is connected to the inner wall of the needle tube in a sliding mode, a needle is connected to the outer wall of the needle tube in a sliding mode, and a quantitative assembly is arranged on the outer wall of the needle tube. Through the technical scheme, the rotating plate is pulled to rotate in the middle of the inner wall of the base, the rotating plate drives the base to slide in the middle of the inner wall of the needle tube, the rotating plate is sleeved on the outer wall of the clamping block and rotates, so that the self-locking effect is achieved, the spring body can be compressed to enable the spring body to elastically deform in the moving process of the base, the base drives the connecting rod to drive the pushing block to move upwards simultaneously, the pushing block can drive the clamping jaw to move upwards simultaneously, and the clamping jaw clamps the needle head inwards under the action of the limiting rod in the moving process, so that the effects of quick disassembly and application to different kinds of needle heads can be achieved. As a further description of the above technical solution: The quantitative assembly comprises a quantitative device, the inner wall of the quantitative device is slidably connected with the outer wall of the needle tube, the lower surface of the quantitative device is slidably connected with the upper surface of the needle head,