Quantitative sampling device for paste sample

Abstract

The utility model relates to the technical field of samplers, and discloses a quantitative sampling device for paste samples, which comprises a quantitative cylinder, an inner container is fixedly connected to the inner wall of the quantitative cylinder, a piston rod is movably connected to the top of the quantitative cylinder, a movable plug is fixedly connected to the bottom of the piston rod, and the movable plug is fixedly connected to the bottom of the quantitative cylinder. A rubber ring is arranged in the middle of the movable plug in a sleeving mode, a rotary knob is fixedly connected to the top of the piston rod, a discharging mechanism is in threaded connection with the bottom of the quantifying cylinder, a quantifying mechanism is fixedly connected to the bottom of the rotary knob, an adjusting mechanism is rotationally connected to the inner wall of the quantifying cylinder, and a supporting mechanism is detachably connected to the outer wall of the quantifying cylinder. According to the utility model, multiple accurate quantitative sampling operations are realized, so that the accuracy of the amount of paste taken in the analysis and test process is ensured, the accuracy of test data is improved, stable and consistent sampling conditions are provided for multiple repeated tests, and the reliability and comparability of test results are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampler technical field especially relates to a quantitative sampling device of paste sample in analysis test process. BACKGROUND

[0002] There are often paste samples in the laboratory analysis test process. The paste sampling device is mainly used for accurately obtaining a certain amount of paste sample, which is to ensure the relative accuracy of each sampling amount, making the detection result more representative and repeatable, and to facilitate the accurate distribution and use of the paste sample in the test process, thereby ensuring the standardization and scientific nature of the test.

[0003] Generally, there are two ways of balance and pipette for quantitative sampling. The balance type quantitative sampling device mainly includes a balance main body and a container (such as a beaker, weighing paper, etc.) for containing samples. Its working principle is to use the weighing function of the balance to weigh the empty container on the balance, and then put the sample into the container, and determine the amount of the sample taken by the weight displayed by the balance to achieve the purpose of quantitative sampling. The sampling device of the pipette mainly consists of a gun body, a suction head and an adjusting button. When working, the volume to be sucked is set by adjusting the button, and the negative pressure is generated in the gun body by pressing the operation button, so that the sample liquid is sucked into the suction head. When the volume of the sample sucked reaches the set value, it can be used for subsequent operation to realize quantitative sampling.

[0004] In the prior art, due to the scene of using the same sample in a small amount for several times (usually dozens of times) in the test process, the balance needs to be operated for a long time by the test personnel, which consumes a lot of manpower and time. The pipette is faster than the balance, but this method is more suitable for liquid samples. If the paste sample is encountered, the use effect will be greatly reduced. Therefore, a quantitative sampling device for paste sample is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides a quantitative sampling device for paste sample, which aims at improving the problem that part of the device in the prior art is difficult to conveniently and accurately sample the paste sample for several times.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of quantitative sampling device of paste sample, including dosing cylinder, the inner wall of dosing cylinder is fixedly connected with inner container, the top of dosing cylinder is movably connected with piston rod, the bottom of piston rod is fixedly connected with movable plug, the middle part of movable plug is sleeved with rubber ring, the top of piston rod is fixedly connected with knob, the bottom of dosing cylinder is threadedly connected with discharge mechanism, the bottom of knob is fixedly connected with dosing mechanism, the inner wall of dosing cylinder is rotatably connected with adjusting mechanism, the outer wall of dosing cylinder is detachably connected with support mechanism;

[0008] The dosing mechanism includes a plurality of transmission rods, the top of the plurality of transmission rods is fixedly connected to the bottom of the knob, the bottom of the plurality of transmission rods is fixedly connected with a docking ring, the top of the dosing cylinder is rotatably connected with a rotating ring, the outer wall of the plurality of transmission rods is slidably connected inside the rotating ring, and the inner wall of the dosing cylinder is slidably connected with a plurality of limiting rings;

[0009] The adjusting mechanism includes a plurality of screws, the outer wall of the plurality of screws is rotatably connected to the inner wall of the dosing cylinder, the inside of the limiting ring is threadedly connected to the outer wall of one of the screws, and the inside of the limiting ring is movably connected to the outer wall of the remaining plurality of screws.

[0010] The discharge mechanism includes a pen barrel, the top of the pen barrel is threadedly connected to the bottom of the dosing cylinder, the top outside of the pen barrel is fixedly connected with a sealing ring, the bottom of the pen barrel is fixedly connected with a silica gel pen head, and the bottom of the silica gel pen head is detachably connected with a blocking plug.

[0011] Further description of the above technical solutions:

[0012] The support mechanism includes a fastening ring, the inside of the fastening ring is detachably connected to the outer wall of the dosing cylinder, the outside of the fastening ring is threadedly connected with a screw, the bottom of the fastening ring is fixedly connected with a plurality of fixed stakes, the proximal side of two of the fixed stakes is rotatably connected with a leg, the other end of the leg is rotatably connected with two rotating stakes, and the bottom of the two rotating stakes is fixedly connected with a suction cup.

[0013] The top of the sealing ring is fixedly connected with a sealing ring, and the top of the sealing ring is detachably connected to the bottom of the dosing cylinder.

[0014] The bottom of the movable plug is concave bowl-shaped, and the outer wall of the movable plug is in contact with the inner wall of the inner container.

[0015] The outside of the docking ring is provided with a plurality of protrusions, the inside of the limiting ring is provided with a plurality of grooves, and the shape of the protrusions is matched with the shape of the grooves.

[0016] The outer wall of the rotating ring is fixedly connected with a sliding ring, and the outer walls of the two ends of the sliding ring are rotationally connected to the top of the dosing cylinder.

[0017] The utility model has the advantages of the following beneficial effects:

[0018] 1、the utility model discloses, through the push knob drive piston rod and movable plug carry out the discharging process, because the effect of the limiting ring makes the docking ring automatic lock when moving a stroke, so that the first section sampling is realized, and the convex block on the docking ring is corresponded with the recess on the limiting ring by rotating the knob, so that the docking ring can continue to move downward and make the movable plug continue to push the material, so that the accurate and accurate sampling operation is realized repeatedly, so as to ensure that the test is accurate, improve the accuracy of test data, and provide stable and consistent sampling conditions for repeated test, enhance the reliability and comparability of test results.

[0019] 2、the utility model discloses, by rotating a screw rod, the limiting ring corresponding to the screw rod moves in the vertical direction, and the rest screw rod limits the rotation of the limiting ring, so that the position of the limiting ring in the dosing cylinder is adjusted, that is, the internal space of the dosing cylinder is separated, so that the internal space of the dosing cylinder can be segmented and adjusted according to the required sampling volume of different density samples, and the applicability of the whole sampling device is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic view of the quantitative sampling device for paste sample proposed in the utility model;

[0021] Figure 2 It is a structure schematic view of the limiting ring of the quantitative sampling device for paste sample proposed in the utility model;

[0022] Figure 3 It is a structure schematic view of the movable plug of the quantitative sampling device for paste sample proposed in the utility model;

[0023] Figure 4 It is Figure 3 The enlarged view of A in the middle.

[0024] LEGEND:

[0025] 1, dosing cylinder; 2, inner container; 3, piston rod; 4, movable plug; 5, rubber ring; 6, knob; 7, transmission rod; 8, docking ring; 9, rotating ring; 10, sliding ring; 11, screw rod; 12, limiting ring; 13, pen barrel; 14, sealing ring; 15, silica gel pen head; 16, plugging plug; 17, fastening ring; 18, screw; 19, fixed pile; 20, supporting leg; 21, rotating pile; 22, suction cup. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] With reference to Figures 1 to 3 The utility model provides a kind of embodiment: a kind of quantitative sampling device of paste sample, including dosing cylinder 1, dosing cylinder 11 is used to accurately control the taking amount of paste. The inner wall of dosing cylinder 1 is fixedly connected with inner container 2, the top of dosing cylinder 1 is movably connected with piston rod 3, and piston rod 32 is used to control the quantitative mechanism to carry out the operation of quantitative discharge. The bottom of piston rod 3 is fixedly connected with movable plug 4, and movable plug 4 is used to push paste material out of dosing cylinder 1. The bottom of movable plug 4 is concave bowl shape, the outer wall of movable plug 4 is in contact with the inner wall of inner container 2, so that movable plug 4 is turned up to form convex shape when descending due to friction, to prevent part of paste from adhering to the bottom of movable plug 4, causing inaccurate quantification. Rubber ring 5 is sleeved in the middle of movable plug 4, and rubber ring 5 is used to prevent paste from being extruded to the top of movable plug 4 from the bottom of movable plug 4, causing dosing cylinder 1 damage. The top of piston rod 3 is fixedly connected with knob 6, and knob 63 is convenient for user to control the whole quantitative sampling process. The bottom of dosing cylinder 1 is screwedly connected with discharge mechanism, the bottom of knob 6 is fixedly connected with quantitative mechanism, the inner wall of dosing cylinder 1 is rotatably connected with adjusting mechanism, and the outer wall of dosing cylinder 1 is detachably connected with supporting mechanism.

[0028] The quantitative mechanism comprises a plurality of transmission rods 7, the top of the plurality of transmission rods 7 is fixedly connected to the bottom of the knob 6, and the transmission rod 7 is used for transmitting the movement of the knob 6 to the subsequent structure. The bottom of the plurality of transmission rods 7 is fixedly connected with a docking ring 8, the docking ring 8 is used for cooperating with the subsequent structure to realize the segmented quantitative operation. The top of the quantitative cylinder 1 is rotatably connected with a rotating ring 9, the rotating ring 9 is used for supporting the movement of the transmission rod 7, so as to prevent the transmission rod 7 from being stuck at the top of the quantitative cylinder 1. The outer wall of the rotating ring 9 is fixedly connected with a sliding ring 10, the two ends of the outer wall of the sliding ring 10 are rotatably connected at the top of the quantitative cylinder 1, the sliding ring 10 provides a rotating basis for the rotating ring 9, the outer wall of the plurality of transmission rods 7 is slidably connected in the inside of the rotating ring 9, so that when the knob 6 rotates, the transmission rod 7 rotates around the knob 6 as the center, and the rotating ring 9 and the sliding ring 10 provide a stable sliding support basis. The inner wall of the quantitative cylinder 1 is slidably connected with a plurality of limiting rings 12, the limiting ring 12 is used for limiting the movement range of the docking ring 8, so as to realize the segmented movement of the docking ring 8, so as to realize the multiple material taking. The outer side of the docking ring 8 is provided with a plurality of protrusions, the inner side of the limiting ring 12 is provided with a plurality of grooves, the angles of the plurality of limiting rings 12 are different, so that the grooves on the limiting ring 12 are misaligned. The shape of the protrusion is matched with the shape of the groove, when the docking ring 8 contacts with the limiting ring 12, the docking ring 8 stops descending through the misalignment of the protrusion and the groove, at this time, the knob 6 is rotated to drive the transmission rod 7 to rotate, so as to drive the docking ring 8 to rotate to align the protrusion and the groove, and then the docking ring 8 can pass through the limiting ring 12 to enter the next stroke.

[0029] The adjusting mechanism comprises a plurality of screw rods 11, the outer wall of the plurality of screw rods 11 is rotatably connected to the inner wall of the quantitative cylinder 1, and the screw rod 11 plays a role of adjusting the position of the limiting ring 12. The inside of the limiting ring 12 is threadedly connected to the outer wall of one of the screw rods 11, so that the screw rod 11 rotates to drive the limiting ring 12 to adjust the position of the inner wall of the quantitative cylinder 1. The inside of the limiting ring 12 is movably connected to the outer wall of the remaining plurality of screw rods 11, so that the limiting ring 12 is limited to move only in the axial linear motion of the screw rod 11, and does not rotate synchronously with the screw rod 11.

[0030] Referring to Figure 1 , Figure 3 , Figure 4The discharging mechanism comprises a pen barrel 13, the top of the pen barrel 13 is threadedly connected to the bottom of the dosing cylinder 1, the threaded connection between the pen barrel 13 and the dosing cylinder 1 is stable and convenient to disassemble and clean, thereby ensuring the hygiene and reusability of the device. The top outer side of the pen barrel 13 is fixedly connected with a sealing ring 14, the top of the sealing ring 14 is fixedly connected with a sealing ring, the top of the sealing ring is detachably connected to the bottom of the dosing cylinder 1, the sealing ring is extruded after the pen barrel 13 is connected to the dosing cylinder 1, so that the sealing ring can deform and fill the gap between the pen barrel 13 and the dosing cylinder 1, thereby further enhancing the sealing effect. The bottom of the pen barrel 13 is fixedly connected with a silica gel pen head 15, the silica gel pen head 15 is soft and has good affinity with the paste, and the silica gel pen head 15 is in the shape of a flat head with a small hole of 1mm in diameter, so that the paste can be uniformly discharged. The bottom of the silica gel pen head 15 is detachably connected with a blocking plug 16, the blocking plug 16 is used to close the silica gel pen head 15 when not in use.

[0031] The supporting mechanism comprises a fastening ring 17, the inner side of the fastening ring 17 is detachably connected to the outer wall of the dosing cylinder 1, the fastening ring 17 is used to fix the dosing cylinder 1, thereby facilitating the user to test the paste sample. The outer part of the fastening ring 17 is threadedly connected with a screw 18, the tightness of the entire fastening ring 17 is adjusted by rotating the screw 18, thereby stably fixing the dosing cylinder 1 at the corresponding position. The bottom of the fastening ring 17 is fixedly connected with a plurality of fixing stakes 19, the fixing stakes 19 provide stable rotating support points for the subsequent structure. The proximal side of the two fixing stakes 19 is rotatably connected with a supporting leg 20, the supporting leg 20 is used to lift the entire dosing cylinder 1 and the fastening ring 17, thereby facilitating the user to place the hand below the silica gel pen head 15 for sampling test. The other end of the supporting leg 20 is rotatably connected with two rotating stakes 21, the bottom of the two rotating stakes 21 is fixedly connected with a suction cup 22, the rotating stakes 21 provide a rotating basis for the suction cup 22 to adapt to different inclination placement planes, and the suction cup 22 extrudes the air inside the suction cup 22 after contacting with the placement plane, thereby forming a negative pressure, so that the suction cup 22 can be stably adsorbed on the placement plane, thereby ensuring the installation stability of the entire dosing cylinder 1.

[0032] Working principle: in use, the supporting leg 20 is pulled to make the supporting leg 20 rotate along the fixing stakes 19 as the center, thereby unfolding the entire supporting frame structure, and when the suction cup 22 contacts with the placement plane, the air inside the suction cup 22 is extruded out by the deformation of the suction cup 22 to form a negative pressure, thereby making the suction cup 22 stably adsorbed on the placement plane, and since the suction cup 22 can rotate through the rotating stakes 21, the applicability of the entire bracket is enhanced to adapt to different inclination planes. Then the dosing cylinder 1 is inserted into the fastening ring 17, and the screw 18 is tightened to make the entire fastening ring 17 tighten, thereby fixing the dosing cylinder 1 inside the fastening ring 17.

[0033] When sampling, first, the volume required for sampling is calculated according to the density of the paste sample, and then the corresponding screw rod 11 is rotated, the limiting ring 12 corresponding to the screw rod 11 is driven to move linearly along the screw rod 11 in the axial direction when the single screw rod 11 is rotated, so as to adjust the position of the limiting ring 12 by rotating the screw rod 11 one by one, so as to divide the internal space of the quantitative cylinder 1 into several parts, thereby providing a movable space basis for subsequent multi-section quantitative sampling. By pressing the knob 6, the knob 6 is lowered to drive the piston rod 3 to descend, so that the movable plug slides in the inner wall of the inner container 2, and the paste material in the inner container 2 is pushed out, and the descending transmission rod 7 of the knob 6 is lowered synchronously to drive the butt joint ring 8 to descend, when the butt joint ring 8 is lowered to contact the first limiting ring 12, the butt joint ring 8 is stuck due to the misalignment between the protrusion on the butt joint ring 8 and the groove on the limiting ring 12, so that the knob 6 cannot continue to descend, so that the movable plug 4 stops the discharging operation after pushing out the paste material at one end, so as to realize the first sampling, and then the knob 6 is rotated, the transmission rod 7 is driven to rotate based on the rotation of the rotating ring 9 as the movement basis, so as to drive the butt joint ring 8 to rotate, so that the protrusion is aligned with the groove on the top limiting ring 12, and then the knob 6 is pressed again to make the butt joint ring 8 pass through the limiting ring 12 and continue to descend, so that the movable plug 4 moves downward to perform the second sampling operation, and the reciprocating operation is realized to achieve the multiple accurate sampling operation.

[0034] When the paste material is pushed out of the quantitative cylinder 1 by the movable plug 4 and enters the pen barrel 13, the sealing ring 14 outside the pen barrel 13 seals the connection between the pen barrel 13 and the quantitative cylinder 1 to prevent the paste material from leaking during the discharging process, thereby causing inaccurate quantification. The paste material passes through the pen barrel 13 and enters the silica gel pen head 15, and then the paste material is extruded out of the silica gel pen head 15 to the external skin of the user for testing.

[0035] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A quantitative sampling device for paste-like samples, comprising a quantitative cylinder (1), characterized in that: The inner wall of the metering cylinder (1) is fixedly connected to an inner liner (2), the top of the metering cylinder (1) is movably connected to a piston rod (3), the bottom of the piston rod (3) is fixedly connected to a movable plug (4), a rubber ring (5) is sleeved in the middle of the movable plug (4), the top of the piston rod (3) is fixedly connected to a knob (6), the bottom of the metering cylinder (1) is threadedly connected to a discharge mechanism, the bottom of the knob (6) is fixedly connected to a metering mechanism, the inner wall of the metering cylinder (1) is rotatably connected to an adjustment mechanism, and the outer wall of the metering cylinder (1) is detachably connected to a support mechanism. The metering mechanism includes multiple transmission rods (7), the tops of the multiple transmission rods (7) are fixedly connected to the bottom of the knob (6), the bottoms of the multiple transmission rods (7) are fixedly connected to a docking ring (8), the top of the metering cylinder (1) is rotatably connected to a rotating ring (9), the outer walls of the multiple transmission rods (7) are slidably connected to the inside of the rotating ring (9), and the inner wall of the metering cylinder (1) is slidably connected to multiple limiting rings (12).

2. The quantitative sampling device for paste-like samples according to claim 1, characterized in that: The adjusting mechanism includes a plurality of screws (11), the outer walls of the plurality of screws (11) being rotatably connected to the inner wall of the metering cylinder (1), the inner thread of the limiting ring (12) being threadedly connected to the outer wall of one of the screws (11), and the inner thread of the limiting ring (12) being movably connected to the outer walls of the remaining plurality of screws (11).

3. The quantitative sampling device for paste-like samples according to claim 1, characterized in that: The discharge mechanism includes a pen (13), the top of which is threaded to the bottom of the metering cylinder (1), a sealing ring (14) is fixedly connected to the outer side of the top of the pen (13), a silicone pen tip (15) is fixedly connected to the bottom of the pen (13), and a sealing plug (16) is detachably connected to the bottom of the silicone pen tip (15).

4. The quantitative sampling device for paste-like samples according to claim 1, characterized in that: The support mechanism includes a fastening ring (17), the inner side of which is detachably connected to the outer wall of the metering cylinder (1). The outer thread of the fastening ring (17) is connected to a screw (18). The bottom of the fastening ring (17) is fixedly connected to a plurality of fixing posts (19). The adjacent sides of two fixing posts (19) are rotatably connected to a support leg (20). The other end of the support leg (20) is rotatably connected to two rotating posts (21). The bottom of the two rotating posts (21) is fixedly connected to a suction cup (22).

5. The quantitative sampling device for a paste-like sample according to claim 3, characterized in that: The top of the sealing ring (14) is fixedly connected to a sealing ring, and the top of the sealing ring is detachably connected to the bottom of the metering cylinder (1).

6. The quantitative sampling device for a paste-like sample according to claim 1, characterized in that: The bottom of the movable plug (4) is concave bowl-shaped, and the outer wall of the movable plug (4) is in contact with the inner wall of the inner liner (2).

7. The quantitative sampling device for paste-like samples according to claim 1, characterized in that: The outer side of the docking ring (8) is provided with multiple protrusions, and the inner side of the limiting ring (12) is provided with multiple grooves. The shape of the protrusions is adapted to the shape of the grooves.

8. The quantitative sampling device for a paste-like sample according to claim 1, characterized in that: The outer wall of the rotating ring (9) is fixedly connected to a sliding ring (10), and the two ends of the outer wall of the sliding ring (10) are rotatably connected to the top of the metering cylinder (1).

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