CN214041153U

CN214041153U - Sample introduction device of atomic fluorescence spectrophotometer

Info

Publication number: CN214041153U
Application number: CN202022882603.2U
Authority: CN
Inventors: 周娜; 迟振新
Original assignee: Liaoning Jiechen Environmental Testing Co ltd
Current assignee: Liaoning Jiechen Environmental Testing Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-24
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses an atomic fluorescence photometer's sampling device, including the tube head, the bottom of tube head is equipped with shutoff mechanism, shutoff mechanism includes layer board, stopper stifled, nose bar, curved piece, horizontal bar ring, traveller, U type pole, lead screw, square bar, perpendicular section of thick bamboo, support, short section of thick bamboo and plectane, the layer board is located the bottom of tube head, the upper surface rigid coupling of layer board has the stopper stifled. This atomic fluorescence photometer's sampling device, cooperation between through tube head and shutoff mechanism, can make the inner wall bottom phase separation of stopper stifled and tube head, at this moment can advance the kind operation to the below through going out appearance pipe and tube head, rotate to short section of thick bamboo to opposite direction after the application of sample is accomplished, can go into the inside bottom of tube head from new sieve with the stopper stifled, it accomplishes out the appearance operation back to go out the appearance pipe promptly, can make the remaining appearance agent in the inside bottom of calandria pipeline carry out proper airtight preservation, be difficult for contacting with external element, be convenient for ensure the accurate of application of sample operation next time and go on.

Description

Sample introduction device of atomic fluorescence spectrophotometer

Technical Field

The utility model relates to a heavy metal check out test set technical field specifically is an atomic fluorescence photometer's sampling device.

Background

The atomic fluorescence photometer uses potassium borohydride or sodium borohydride as a reducing agent to reduce an element to be analyzed in a sample solution into volatile covalent gaseous hydride (or atomic vapor), and then introduces the volatile covalent gaseous hydride (or atomic vapor) into an atomizer by means of a carrier gas, and the volatile covalent gaseous hydride is atomized in an argon-hydrogen flame to form a ground state atom. The atomic fluorescence photometer is a high-precision instrument, detection is usually completed by matching a plurality of systems inside the atomic fluorescence photometer, and in a sample introduction system, a sample introduction device is a device which can quantitatively send an analysis sample into a chromatographic column in the chromatographic system, but in the automatic sample introduction process, the accident that a current-carrying groove is sucked backwards due to unsmooth circulation inside a current-guiding groove often occurs, so that a detection sample is mixed with a stock solution, a detection result is disordered, and even all the detection stock solution is scrapped, so that the sample introduction device of the atomic fluorescence photometer in the prior art is applied, but in the actual use process, certain defects still exist, such as the lack of a plugging mechanism at the bottom end of a sample outlet pipe, after the sample outlet pipe finishes the sample outlet operation, the residual sample agent at the bottom end in the pipeline cannot be properly stored, and is easy to contact with external elements, so that the next sample adding operation is influenced to be accurately carried out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an atomic fluorescence photometer's sampling device to the bottom of the play appearance pipe that proposes in solving above-mentioned background art lacks shutoff mechanism, goes out the appearance pipe and accomplishes out the appearance operation back, and the remaining appearance agent in the inside bottom of pipeline can't be properly preserved, easily contacts with external element, influences the accurate problem of going on of next application of sample operation.

In order to achieve the above object, the utility model provides a following technical scheme: a sample introduction device of an atomic fluorescence spectrophotometer comprises a tube head, wherein a plugging mechanism is arranged at the bottom end of the tube head;

the plugging mechanism comprises a supporting plate, a plug, a convex rod, a bent block, a cross bar ring, a sliding column, a U-shaped rod, a screw rod, a square rod, a vertical cylinder, a support, a short cylinder and a circular plate;

the support plate is positioned at the bottom end of the tube head, the upper surface of the support plate is fixedly connected with a plug, the outer wall of the plug is tightly abutted to the bottom end of the inner wall of the tube head, the left end part of the upper surface of the support plate is fixedly connected with a convex rod, the convex rod is arranged on the left side of the outer part of the tube head, the top end of the convex rod is hinged with a bent block, the bent block is fixedly connected with the outer wall of the left side of the tube head, the left surface of the support plate is fixedly connected with a horizontal bar ring, a long bar hole is formed in the horizontal bar ring, a sliding column is arranged in the long bar hole and is in clearance fit with the long bar hole, the two ends of the sliding column are fixedly connected with a U-shaped rod, the top end of the U-shaped rod is fixedly connected with a screw rod, a square rod is vertically arranged in the inner wall of the square rod, the top end of the square rod is fixedly connected to the top end of the inner wall of the vertical tube, a support is fixedly connected with the left surface of the tube head, the bottom end of the outer wall of the vertical cylinder is rotatably connected with a short cylinder, a circular plate is fixedly connected to the inner wall of the short cylinder, and the inner wall of the circular plate is connected with the outer wall of the screw rod in a threaded mode.

Preferably, the square rod and the screw rod form a sliding limiting structure.

Preferably, the right side of the outer wall of the short cylinder is provided with a driving mechanism;

the driving mechanism comprises a trapezoidal ring groove, a sliding block, a ball, a rotating drum, grinding lines, a first toothed ring and a second toothed ring;

the outer wall at the tube head is seted up to trapezoidal annular, the equal sliding clamping in both sides of the inner wall left and right sides of trapezoidal annular has the slider, the outside sliding clamping of slider has a plurality of balls, the ball is laminated mutually with the inner wall of trapezoidal annular, the outside end rigid coupling of slider has the rotary drum, the outer wall bottom processing of rotary drum has the mill line, the fixed cover in outer wall top of rotary drum has connect first ring gear, the left side meshing of first ring gear is connected with the second ring gear, the inner wall of second ring gear links to each other with the outer wall of short section of thick bamboo is fixed.

Preferably, the two sliders are symmetrical with respect to a center point of the drum.

Preferably, a butt joint mechanism is arranged above the pipe head;

the butt joint mechanism comprises a first circular ring, a rubber ring, a second circular ring, a hook, an elastic band, a sleeve and a bolt;

the inner wall of ring one links to each other with the outer end top stationary phase of tube head, the upper surface rigid coupling of ring one has the rubber ring, the outer wall of ring one is the annular, the outer wall rigid coupling of ring one has ring two, the couple has been hung on the top of ring two, the top rigid coupling of couple has the elastic cord, the top rigid coupling of elastic cord has the sleeve, telescopic outer wall is the annular, telescopic outer wall threaded connection has the bolt.

Preferably, the central points of the elastic band and the hook are both positioned on the same horizontal vertical line.

Compared with the prior art, the beneficial effects of the utility model are that: this atomic fluorescence spectrophotometer's sampling device for traditional technique, has following advantage:

the pipe head and the bottom end of the sample outlet pipe are installed through the matching between the pipe head and the plugging mechanism, when the bottom end of the sample outlet pipe needs to be subjected to sample adding operation, an operator applies force to the short cylinder to enable the circular plate to rotate, due to the threaded connection relationship between the circular plate and the lead screw and the limitation of the square rod on the lead screw, the U-shaped rod and the sliding column can move downwards, the sliding column can slide in the cross bar ring and apply force to the cross bar ring, the convex rod at the left end part of the upper surface of the supporting plate can rotate at the bottom center point of the bent block, the plug can be separated from the bottom end of the inner wall of the pipe head, sample introduction operation can be performed downwards through the sample outlet pipe and the pipe head, the short cylinder rotates in the opposite direction after the sample adding is completed, the plug can be screened from the new bottom end of the pipe head, namely, after the sample outlet pipe completes the sample outlet operation, the sample discharging agent remained at the bottom end in the sample discharging pipeline can be properly and hermetically stored, the sample adding device is not easy to contact with external elements, so that the next sample adding operation can be accurately carried out;

through the matching among the pipe head, the plugging mechanism and the driving mechanism, when an operator applies force to rotate the short cylinder, the operator can apply force to the grinding lines to rotate the rotary cylinder, and in the process, the first gear ring and the second gear ring are meshed to rotate, so that the short cylinder can be driven to rotate, and the operation convenience can be provided for the operator;

through the cooperation between tube head and the docking mechanism, when needing to install the butt joint with tube head and play appearance pipe, at first cup joint the sleeve on the outer wall of play appearance pipe, operating personnel carries out clockwise rotation to the bolt and offsets tightly with the outer wall of play appearance pipe, then offsets tightly the upper surface of rubber ring and the bottom of play appearance pipe, articulates couple and ring two, the elasticity takes out a kind stay cord state, can accomplish the butt joint installation between tube head and the play appearance pipe, it is comparatively simple convenient to operate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a connection structure of the tube head and the plugging mechanism in fig. 1;

FIG. 3 is a schematic view of a connection structure of the screw and the circular plate of FIG. 2;

fig. 4 is a schematic view showing a connection structure of the cartridge, the drum and the slider of fig. 2.

In the figure: 1. the pipe head, 2, the plugging mechanism, 201, a supporting plate, 202, a plug, 203, a convex rod, 204, a bent block, 205, a horizontal strip ring, 206, a sliding column, 207, a U-shaped rod, 208, a screw rod, 209, a square rod, 210, a vertical cylinder, 211, a support, 212, a short cylinder, 213, a circular plate, 214, a long strip hole, 3, a driving mechanism, 301, a trapezoidal ring groove, 302, a sliding block, 303, a ball, 304, a rotary cylinder, 305, a grinding grain, 306, a first toothed ring, 307, a second toothed ring, 4, a butting mechanism, 401, a first circular ring, 402, a rubber ring, 403, a second circular ring, 404, a hook, 405, an elastic band, 406, a sleeve, 407 and a bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a sample introduction device of an atomic fluorescence photometer comprises a tube head 1, wherein a plugging mechanism 2 is arranged at the bottom end of the tube head 1, the plugging mechanism 2 comprises a supporting plate 201, a plug 202, a convex rod 203, a bent block 204, a horizontal ring 205, a sliding column 206, a U-shaped rod 207, a lead screw 208, a square rod 209, a vertical cylinder 210, a support 211, a short cylinder 212 and a circular plate 213, the supporting plate 201 is positioned at the bottom end of the tube head 1, the upper surface of the supporting plate 201 is fixedly connected with the plug 202, the plug 202 is made of rubber and has certain toughness, the outer wall of the plug 202 is tightly abutted to the bottom end of the inner wall of the tube head 1, the convex rod 203 is fixedly connected to the left end of the upper surface of the supporting plate 201, the bent block 204 is hinged to the top end of the convex rod 203, the bent block 204 is fixedly connected to a contact surface of the tube head 1, the horizontal ring 205 is fixedly connected to the left surface of the supporting plate 201, a long strip hole 214 is formed inside the horizontal ring 205, the long strip hole 214 is internally provided with the sliding column 206, and the sliding column 206 is in clearance fit with the long hole 214, the front end and the rear end of the top end of the outer wall of the sliding column 206 are fixedly connected with U-shaped rods 207, the top end of each U-shaped rod 207 is fixedly connected with a screw rod 208, a square rod 209 is vertically arranged inside each screw rod 208, the outer wall of each square rod 209 is in clearance fit with the inner wall of each screw rod 208, the top end of each square rod 209 is fixedly connected with a vertical cylinder 210, the outer wall of each vertical cylinder 210 is fixedly sleeved with a support 211, and each support 211 is fixedly connected with the contact surface of the tube head 1; the bottom end of the outer wall of the vertical cylinder 210 is rotatably connected with a short cylinder 212, and the bottom end of the outer wall of the vertical cylinder 210 is rotatably connected with the upper part of the inner wall of the short cylinder 212; the short cylinder 212 is rotatably connected with the vertical cylinder 210 through a ball bearing, a circular plate 213 is fixedly connected to the inner wall of the short cylinder 212, the inner wall of the circular plate 213 is in threaded connection with the outer wall of the screw 208, the square rod 209 and the screw 208 form a sliding limiting structure, the square rod 209 can perform sliding limiting on the screw 208 from left to right, the screw 208 can slide up and down, but cannot rotate, and the vertical stable movement of the screw 208 is facilitated.

The right side of the outer wall of the short cylinder 212 is provided with a driving mechanism 3, the driving mechanism 3 comprises a trapezoidal ring groove 301, a slide block 302 and a ball 303, the novel pipe fitting comprises a rotary drum 304, abrasive grains 305, a first toothed ring 306 and a second toothed ring 307, wherein the trapezoidal ring groove 301 is formed in the outer wall of the pipe fitting 1, the left side and the right side of the inner wall of the trapezoidal ring groove 301 are connected with sliding blocks 302 in a sliding and clamping mode, the outer side of each sliding block 302 is connected with a plurality of balls 303 in a sliding and clamping mode, the balls 303 can roll but cannot be separated from the sliding blocks 302, the balls 303 are attached to the inner wall of the trapezoidal ring groove 301, the outer side end portion of each sliding block 302 is fixedly connected with the rotary drum 304, the abrasive grains 305 are machined at the bottom end of the outer wall of the rotary drum 304, the top end of the outer wall of the rotary drum 304 is fixedly connected with the first toothed ring 306, the left side of the first toothed ring 306 is meshed with the second toothed ring 307, the inner wall of the second toothed ring 307 is fixedly connected with the outer wall of the short drum 212, the two sliding blocks 302 are bilaterally symmetrical relative to the central point of the rotary drum 304, and the two sliding blocks 302 can apply force to the rotary drum 304 uniformly.

The butt joint mechanism 4 is arranged above the tube head 1, the butt joint mechanism 4 comprises a first ring 401, a rubber ring 402, a second ring 403, a hook 404, an elastic band 405, a sleeve 406 and a bolt 407, the inner wall of the first ring 401 is fixedly connected with the top end of the outer end of the tube head 1, the rubber ring 402 is fixedly connected to the upper surface of the first ring 401, the outer wall of the first ring 401 is annularly and fixedly connected with the second ring 403, the hook 404 is hung at the top end of the second ring 403, the elastic band 405 is fixedly connected to the top end of the hook 404, the elastic band 405 is made of cotton or chemical fiber, warp and weft yarns, and is interwoven with a group of rubber latex filaments or spandex filaments according to a certain rule to form, the sleeve 406 is fixedly connected to the top end of the elastic band 405, the outer wall of the sleeve 406 is annularly and threadedly connected with the bolt 407, the elastic band 405 and the central point of the hook 404 are located on the same horizontal vertical line, and the elastic band 405 can uniformly apply force to the hook 404.

When the sample feeding device of the atomic fluorescence spectrophotometer is used, firstly, the sleeve 406 is sleeved on the outer wall of the sample discharging pipe, an operator rotates the bolt 407 clockwise to abut against the outer wall of the sample discharging pipe, then the upper surface of the rubber ring 402 abuts against the bottom end of the sample discharging pipe, then the hook 404 and the second ring 403 are hooked, the elastic band 405 is in a stretching state, the butt joint installation between the pipe head 1 and the sample discharging pipe can be completed, and the bottom end of the sample discharging pipe needs to be subjected to sample feeding operation; an operator holds the grinding pattern 305 and rotates the grinding pattern, the first short toothed ring tube 306 drives the short tube 212 to rotate, the circular plate 213 and the short tube 212 rotate together, and the circular plate 213 is in threaded fit with the screw rod 208, so that the screw rod 208 can move up and down by the rotation of the circular plate 213, the screw rod 208, the U-shaped rod 207 and the sliding column 206 move up and down together, the sliding column 206 can slide in the long hole 214 of the cross bar ring 205 by moving up and down and apply force to the cross bar ring 205, and the supporting plate 201 can rotate by the bottom center point of the bent block 204; the traveller 206 rebound can make the bottom phase separation of layer board 201 and tube head 1, the inner wall bottom phase separation of stifled 202 and tube head 1 of stopper like this, at this moment can advance the kind operation through going out appearance pipe and tube head 1 below, hold after the application of sample is accomplished and grind line 305 and opposite direction rotates, can insert the inside bottom of tube head 1 again with stifled 202 of stopper, it finishes out the appearance operation back promptly to go out the appearance pipe, can make the remaining appearance agent in the inside bottom of calandria pipeline carry out proper airtight preservation, be difficult for contacting with external element, be convenient for ensure the accurate of next application of sample operation and go on, practicality can strengthen and do benefit to using widely.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an atomic fluorescence photometer's sampling device, includes tube head (1), its characterized in that: the bottom end of the tube head (1) is provided with a plugging mechanism (2);

the plugging mechanism (2) comprises a supporting plate (201), a plug (202), a convex rod (203), a bent block (204), a horizontal bar ring (205), a sliding column (206), a U-shaped rod (207), a screw rod (208), a square rod (209), a vertical cylinder (210), a support (211), a short cylinder (212) and a circular plate (213);

the utility model discloses a pipe joint, including layer board (201), the upper surface rigid coupling of layer board (201) has stopper stifled (202), the outer wall of stopper stifled (202) offsets tightly with the inner wall bottom of pipe joint (1), the upper surface left side end rigid coupling of layer board (201) has nose bar (203), and nose bar (203) are in the outside left side of pipe joint (1), the top of nose bar (203) articulates there is bent piece (204), bent piece (204) link to each other with the left side outer wall of pipe joint (1) is fixed, the left side surface rigid coupling of layer board (201) has horizontal bar ring (205), and the inside of horizontal bar ring (205) has rectangular hole (214), be equipped with traveller (206) in rectangular hole (214), traveller (206) and rectangular hole (214) clearance fit, the both ends rigid coupling of traveller (206) has U type pole (207), the top rigid coupling of U type pole (207) has lead screw (208), the inside vertical square bar (209) that is equipped with of lead screw (208), the outer wall of square bar (209) and the inner wall clearance fit of lead screw (208), the top rigid coupling of square bar (209) is on the inner wall top of a vertical section of thick bamboo (210), the outer wall of a vertical section of thick bamboo (210) is fixed to be cup jointed support (211), support (211) links to each other with the left surface of tube head (1) is fixed, the outer wall bottom of a vertical section of thick bamboo (210) is rotated and is connected with short section of thick bamboo (212), the inner wall rigid coupling of a short section of thick bamboo (212) has plectane (213), the inner wall of plectane (213) links to each other with the outer wall screw thread of lead screw (208).

2. The sample introduction device of the atomic fluorescence spectrophotometer according to claim 1, wherein: the square rod (209) and the screw rod (208) form a sliding limiting structure.

3. The sample introduction device of the atomic fluorescence spectrophotometer according to claim 1, wherein: a driving mechanism (3) is arranged on the right side of the outer wall of the short cylinder (212);

the driving mechanism (3) comprises a trapezoidal ring groove (301), a sliding block (302), a ball (303), a rotating cylinder (304), a grinding line (305), a first toothed ring (306) and a second toothed ring (307);

the outer wall in tube head (1) is seted up in trapezoidal annular (301), the equal sliding clamping joint in the inner wall left and right sides of trapezoidal annular (301) has slider (302), the outside sliding clamping joint of slider (302) has a plurality of balls (303), ball (303) laminate mutually with the inner wall of trapezoidal annular (301), the outside end rigid coupling of slider (302) has rotary drum (304), the outer wall bottom processing of rotary drum (304) has wear line (305), the fixed cover in outer wall top of rotary drum (304) has first ring gear (306), the left side meshing of first ring gear (306) is connected with second ring gear (307), the inner wall of second ring gear (307) links to each other with the outer wall of short section of thick bamboo (212) is fixed.

4. The sample introduction device of the atomic fluorescence spectrophotometer according to claim 3, wherein: the two sliding blocks (302) are symmetrical left and right relative to the central point of the rotary drum (304).

5. The sample introduction device of the atomic fluorescence spectrophotometer according to claim 1, wherein: a butt joint mechanism (4) is arranged above the pipe head (1);

the butt joint mechanism (4) comprises a first circular ring (401), a rubber ring (402), a second circular ring (403), a hook (404), an elastic band (405), a sleeve (406) and a bolt (407);

the inner wall of ring (401) links to each other with the outer end top stationary phase of tube head (1), the upper surface rigid coupling of ring (401) has rubber ring (402), the outer wall of ring (401) is the annular, the outer wall rigid coupling of ring (401) has two (403) of ring, the top of two (403) of ring has been hung and has been connect couple (404), the top rigid coupling of couple (404) has elastic cord (405), the top rigid coupling of elastic cord (405) has sleeve (406), the outer wall of sleeve (406) is the annular, the outer wall threaded connection of sleeve (406) has bolt (407).

6. The sample introduction device of the atomic fluorescence spectrophotometer according to claim 5, wherein: the central points of the elastic band (405) and the hook (404) are all positioned on the same horizontal vertical line.