Graphite furnace positioning device

Abstract

The utility model provides a graphite furnace positioning device which comprises a positioning table, supporting legs are arranged at the four corners of the lower surface of the positioning table, two sliding doors which are arranged in a front-back staggered mode are arranged on the front side of the positioning table in a sliding mode, a positioning seat is arranged on the upper surface of the positioning table, and two sliding columns which are symmetrically distributed in a front-back mode are arranged in the positioning table in a sliding mode. A placing plate is arranged between the top ends of the sliding columns, a rubber pad is arranged on the upper surface of the placing plate, a positioning and fixing module used for positioning and fixing the graphite furnace is further arranged on the positioning seat, and an electric control module used for driving the placing plate to move is further arranged on the positioning table. According to the graphite furnace positioning device disclosed by the utility model, the rotating frames around the graphite furnace drive the clamping blocks to synchronously approach to the outer arc surface of the graphite furnace to quickly and stably position and clamp the graphite furnace in a self-centering manner.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite furnace processing, in particular to a graphite furnace positioning device. Background Art

[0002] Graphite Furnace (GF) is a high-temperature atomization device used in atomic absorption spectroscopy (AAS), mainly used for trace element analysis. In AAS, the elements to be tested in the sample need to be converted into gaseous atoms first in order to detect their absorption of light of a specific wavelength.

[0003] In the existing graphite furnace positioning device, after the graphite furnace is placed on a placement plate, a motor drives a clamping block to approach the graphite furnace to quickly clamp and position it. However, during the processing of the graphite furnace, since the clamping mechanism of the graphite furnace is relatively simple, the graphite furnace may be shifted to a certain extent due to the vibration of the processing equipment during processing, which may affect the processing accuracy. Utility Model Content

[0004] In view of this, the utility model aims at the deficiencies of the prior art and provides a graphite furnace positioning device, which drives the clamping blocks to synchronously approach the outer arc surface of the graphite furnace through the rotating frames around the graphite furnace to perform rapid and stable self-centering positioning and clamping of the graphite furnace.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a graphite furnace positioning device, including a positioning platform, the four corners of the lower surface of the positioning platform are provided with supporting feet, the front side of the positioning platform is slidingly provided with two sliding doors that are staggered front and back, the upper surface of the positioning platform is provided with a positioning seat, the internal sliding of the positioning platform is provided with two sliding columns that are symmetrically distributed front and back, a placement plate is provided between the top ends of the sliding columns, and a rubber pad is provided on the upper surface of the placement plate. A positioning and fixing module for positioning and fixing the graphite furnace is also provided on the positioning seat, and an electric control module for driving the placement plate to move is also provided on the positioning platform; the electric control module includes electric push rods arranged on the left and right sides of the top end of the positioning platform, and the telescopic ends of the two electric push rods are connected and fixed to the placement plate.

[0006] As a further improvement of the present invention, the positioning and fixing module includes a support one uniformly welded and fixed to the inner arc surface in the middle of the positioning seat, a rotating frame is rotatably arranged between two vertically adjacent support ones through a rotating shaft, a clamping block is arranged at one end of the rotating frame away from the support one, and an electric drive unit for driving the rotating frame to rotate is also arranged on the positioning seat; the electric drive unit includes a gear fixedly sleeved in the middle of the outer arc surface of the rotating shaft, a rotating seat is arranged at the inner top and inner bottom of the positioning seat, a rotating drum is rotatably arranged between the two rotating seats, and the inner arc surface of the rotating drum is arranged There are two inner gear rings symmetrically distributed up and down, which are respectively meshed with adjacent gears. A driving assembly for driving the rotating drum to rotate is also arranged between the rotating drum and the positioning seat; the driving assembly includes a worm gear fixedly sleeved on the middle part of the outer arc surface of the rotating drum, four evenly distributed supports 2 are welded and fixed inside the positioning seat, and worms are rotatably arranged between two adjacent supports 2 in front and behind, and the worms are respectively meshed with adjacent worm wheels, and motors are arranged on the rear sides of the rear supports 2, and the output shafts of the motors are respectively fixed to the adjacent worms through couplings.

[0007] As a further improvement of the utility model, a control panel is arranged on the front side of the upper surface of the positioning seat, and the electric push rod and the motor are both electrically connected to the control panel.

[0008] As a further improvement of the utility model, rubber sleeves are bonded and fixed to the outer arc surfaces of the clamping blocks.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] First, the control panel drives two electric push rods to operate, and the electric push rods can drive the graphite furnace to rise or fall, making it convenient for personnel to take and place the graphite furnace.

[0011] Secondly, the two motors are driven to run synchronously through the control panel, and the rotating frames around the graphite furnace drive the clamping blocks to synchronously approach the outer arc surface of the graphite furnace to perform fast and stable self-centering positioning and clamping of the graphite furnace.

[0012] Third, the meshing relationship between the worm and the worm wheel drives the worm wheel to rotate, so that the worm wheel drives the rotating drum to rotate, and the gear drives the rotating shaft connected thereto to rotate, and the rotation of the rotating shaft drives the rotating frame to rotate, so that the rotating frame drives the clamping block to approach the graphite furnace to quickly position and clamp it.

[0013] Fourthly, the rubber sleeve can be used to cushion the outer side of the graphite furnace, which can effectively prevent the graphite furnace from being damaged due to excessive clamping force during the positioning of the graphite furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal plane structure of the utility model.

[0019] In the figure: 101, positioning table; 102, support foot; 103, sliding door; 104, placement plate; 105, rubber pad; 106, sliding column; 107, electric push rod; 108, positioning seat; 201, support one; 202, rotating frame; 203, clamping block; 204, rotating seat; 205, rotating drum; 206, gear; 207, inner gear ring; 208, worm gear; 209, support two; 210, worm; 211, motor; 301, control panel. DETAILED DESCRIPTION

[0020] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0021] like Figure 1 , 2 4, comprising a positioning platform 101, wherein the four corners of the lower surface of the positioning platform 101 are provided with supporting feet 102, the front side of the positioning platform 101 is slidingly provided with two sliding doors 103 which are staggered in front and back, the upper surface of the positioning platform 101 is provided with a positioning seat 108, the inner sliding of the positioning platform 101 is provided with two sliding columns 106 which are symmetrically distributed in front and back, a placing plate 104 is provided between the top ends of the sliding columns 106, a rubber pad 105 is provided on the upper surface of the placing plate 104, a positioning and fixing module for positioning and fixing the graphite furnace is also provided on the positioning seat 108, and an electric control module for driving the placing plate 104 to move is also provided on the positioning platform 101.

[0022] like Figure 4 As shown, the electric control module includes electric push rods 107 arranged on the left and right sides of the top of the positioning platform 101 , and the telescopic ends of the two electric push rods 107 are both connected and fixed to the placement plate 104 .

[0023] like Figure 2 , 34, the positioning and fixing module includes a support 201 uniformly welded and fixed on the inner arc surface of the middle part of the positioning seat 108, and a rotating frame 202 is rotatably arranged between two vertically adjacent supports 201 through a rotating shaft, and a clamping block 203 is arranged at one end of the rotating frame 202 away from the support 201. The positioning seat 108 is also provided with an electric drive unit for driving the rotating frame 202 to rotate; the electric drive unit includes a gear 206 fixedly sleeved in the middle part of the outer arc surface of the rotating shaft, and the inner top and inner bottom of the positioning seat 108 are both provided with a rotating seat 204, and a rotating drum 205 is rotatably arranged between the two rotating seats 204, and the inner arc surface of the rotating drum 205 is provided with two upper and lower symmetrical divisions. The inner gear ring 207 of the cloth is respectively meshed with the adjacent gears 206. A driving assembly for driving the rotating drum 205 to rotate is also provided between the rotating drum 205 and the positioning seat 108; the driving assembly includes a worm gear 208 fixedly sleeved on the middle part of the outer arc surface of the rotating drum 205, four evenly distributed supports 209 are welded and fixed inside the positioning seat 108, and worms 210 are respectively rotatably provided between two adjacent supports 209 in front and behind, and the worms 210 are respectively meshed with the adjacent worm gears 208, and the rear sides of the rear supports 209 are respectively provided with motors 211, and the output shafts of the motors 211 are respectively fixed to the adjacent worms 210 through couplings.

[0024] like Figure 1 , 2 As shown, a control panel 301 is disposed on the front side of the upper surface of the positioning seat 108 , and the electric push rod 107 and the motor 211 are both electrically connected to the control panel 301 .

[0025] During the processing of the electric ink furnace, the personnel place the electric ink furnace on the placement plate 104, and make the electric ink furnace flexibly contact with the placement plate 104 through the rubber pad 105 on the placement plate 104, so that the control panel 301 drives the two electric push rods 107 to operate, so that the telescopic end of the electric push rod 107 is retracted, so that the telescopic end of the electric push rod 107 drives the placement plate 104 to contact with the upper surface of the positioning platform 101, so that the electric ink furnace is located inside the positioning seat 108; the two motors 211 are driven to operate synchronously through the control panel 301, so that the motors 211 respectively drive the worm 210 connected thereto to rotate, and then the worm wheel 208 is driven to rotate through the meshing relationship between the worm 210 and the worm wheel 208, so that the worm wheel 208 drives the rotating drum 205 to rotate, so that the rotating drum 205 drives the inner parts of the upper and lower sides of its inner arc surface. The gear ring 207 rotates, and then the inner gear ring 207 drives the gear 206 meshing with it to rotate, so that the gear 206 drives the rotating shaft connected to it to rotate, and the rotation of the rotating shaft drives the rotating frame 202 to rotate, so that the rotating frame 202 drives the clamping block 203 to approach the graphite furnace for rapid positioning and clamping thereof, and the rotating frame 202 around the graphite furnace drives the clamping block 203 to synchronously approach the outer arc surface of the graphite furnace to perform rapid and stable self-centering positioning and clamping of the graphite furnace; after processing the graphite furnace, the personnel drive the motor 211 to reverse and unlock the graphite furnace through the control panel 301, and the control panel 301 drives the two electric push rods 107 to operate, so that the electric push rods 107 drive the placement plate 104 to rise, so that the placement plate 104 drives the processed graphite furnace to rise, so that the personnel can remove the graphite furnace easily.

[0026] According to another embodiment of the present invention, Figure 1 , 2 As shown in FIG. 3 , the outer arc surface of the clamp block 203 is bonded and fixed with a rubber sleeve. In the process of positioning the graphite furnace, the rubber sleeve can effectively prevent the graphite furnace from being damaged due to excessive clamping force.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A graphite furnace positioning device, comprising a positioning platform (101), wherein four corners of the lower surface of the positioning platform (101) are provided with supporting feet (102), characterized in that: The front side of the positioning platform (101) is slidingly provided with two sliding doors (103) that are staggered in the front and rear directions; the upper surface of the positioning platform (101) is provided with a positioning seat (108); the interior of the positioning platform (101) is slidingly provided with two sliding columns (106) that are symmetrically distributed in the front and rear directions; a placement plate (104) is provided between the top ends of the sliding columns (106); a rubber pad (105) is provided on the upper surface of the placement plate (104); a positioning and fixing module for positioning and fixing the graphite furnace is also provided on the positioning seat (108); and an electric control module for driving the placement plate (104) to move is also provided on the positioning platform (101).

2. The graphite furnace positioning device according to claim 1, characterized in that: The electric control module comprises electric push rods (107) arranged on the left and right sides of the top end inside the positioning platform (101), and the telescopic ends of the two electric push rods (107) are both connected and fixed to the placement plate (104).

3. The graphite furnace positioning device according to claim 2, characterized in that: The positioning and fixing module comprises a support one (201) uniformly welded and fixed on the inner arc surface of the middle part of the positioning seat (108); a rotating frame (202) is respectively arranged between two vertically adjacent supports one (201) via a rotating shaft; a clamping block (203) is arranged at one end of the rotating frame (202) away from the support one (201); and an electric drive unit for driving the rotating frame (202) to rotate is also arranged on the positioning seat (108).

4. The graphite furnace positioning device according to claim 3, characterized in that: The electric drive unit comprises a gear (206) fixedly sleeved on the middle part of the outer arc surface of the rotating shaft, a rotating seat (204) is arranged at the inner top and the inner bottom of the positioning seat (108), a rotating drum (205) is rotatably arranged between the two rotating seats (204), and the inner arc surface of the rotating drum (205) is provided with two inner gear rings (207) symmetrically distributed up and down, and the inner gear rings (207) are respectively meshed and connected with adjacent gears (206), and a driving component for driving the rotating drum (205) to rotate is also arranged between the rotating drum (205) and the positioning seat (108).

5. The graphite furnace positioning device according to claim 4, characterized in that: The driving assembly comprises a worm wheel (208) fixedly sleeved on the middle part of the outer arc surface of the rotating drum (205); four evenly distributed support seats (209) are welded and fixed inside the positioning seat (108); worms (210) are rotatably arranged between two adjacent support seats (209) at the front and rear sides; the worms (210) are respectively meshed and connected with adjacent worm wheels (208); a motor (211) is arranged on the rear side of the rear support seats (209); and the output shafts of the motors (211) are respectively fixed to the adjacent worms (210) via couplings.

6. The graphite furnace positioning device according to claim 5, characterized in that: A control panel (301) is provided on the front side of the upper surface of the positioning seat (108), and the electric push rod (107) and the motor (211) are both electrically connected to the control panel (301).

7. The graphite furnace positioning device according to claim 3, characterized in that: The outer arc surface of the clamping block (203) is bonded and fixed with a rubber sleeve.

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