Memory mechanism for quickly setting spectrum analysis gap
Technical Field
The invention relates to the technical field of element spectrum analysis, in particular to a memory mechanism for quickly setting a spectrum analysis gap.
Background
The spark spectrum is a classical element analysis method, and the graphite turntable electrode spark emission spectrum device has very obvious practical value in direct analysis and field analysis due to the adaptability of the device to samples, especially liquid samples. In the spark emission spectrum, the width of the analysis gap determines the nature and energy of the spark discharge, which has an important impact on the analysis performance. The turntable electrode discharge device needs to be frequently assembled and disassembled with the graphite turntable electrode and the graphite rod electrode, which makes it necessary to provide a device capable of rapidly setting the analysis gap width. The conventional method is to set the analysis gap width with an etalon and then fix the electrode. However, the electrode needs to be reset after each replacement, the operation is tedious and time-consuming, and the application requirements of a large number of sample analysis cannot be met.
Disclosure of Invention
In view of the drawbacks of the prior art, the present invention is directed to providing a memory mechanism for rapidly setting a spectrum analysis gap, so as to achieve rapid setting of the spectrum analysis gap and maintain long-term memory.
In order to achieve the above object, the present invention adopts the following technical scheme.
A memory mechanism for quickly setting a spectrum analysis gap comprises a fine adjustment mechanism 1, a fixed base 2, a sliding mechanism 3, a first spring 4, a second spring 9, a compression bar 7 and a bar clamp 8;
the fine adjustment mechanism 1 is arranged on a precise screw hole of the fixed base 2, the top end of the fine adjustment mechanism is contacted with one end face of the sliding mechanism 3, the sliding mechanism 3 is arranged in a sliding groove of the fixed base 2, one end of the sliding mechanism is connected with one end of the pressing rod 7 in a half-way separable way, the other end of the sliding mechanism is contacted with the first spring 4 of the fixed base 2, the sliding mechanism 3 can be reset under the action of a spring force, the pressing rod 7 is arranged in a limit groove of the fixed base 2 through a pin and can do 90-degree rotary motion around the pin, the rod clamp 8 is arranged on a protruding block on the top face of the sliding mechanism 3 through the pin, and meanwhile, a second spring 9 is arranged between the side face of the sliding mechanism 3 and the rod clamp 8;
when the spectrum analyzer is used, the disc electrode 6 is arranged in the rotating shaft extending out of the fixed base 2, the rod electrode 5 is placed in the V-shaped groove of the sliding mechanism 3, one end face of the rod electrode 5 is propped against the circumferential face of the disc electrode 6, then the rod clamp 8 is used for clamping, the spring state of the pressing rod 7 is the initial state of the whole mechanism, when the pressing rod 7 is pushed to rotate, the first half is in an unobstructed state, when one end of the pressing rod 7 is contacted with one end face of the sliding mechanism 3 in the second half, the pressing rod 7 starts to push the sliding mechanism 3 to move downwards, the rod electrode 5 on the rod clamp 8 is rigidly driven to move together by the sliding mechanism 3, the rod electrode 5 and the rod clamp 8 are forced to displace due to the fact that one end of the rod electrode 5 is propped against the disc electrode 6 on one end of the fixed base 2, when the pressing rod 7 is restored to the spring state, the sliding mechanism 3 drives the rod clamp 8 and the rod electrode 5 to do reset motion under the action of the spring force until one end of the sliding mechanism 3 is contacted with one end of the fine adjusting mechanism 1, and the movement of the rod electrode 5 and the disc electrode 6 is stopped.
The implementation of the scheme of the invention has at least the following advantages:
1. the structure is simple and compact, and the stroke of two states of one mechanism determines the width of the analysis gap.
2. The analysis gap position can be set by setting the top dead center of the sprung state, thereby setting the width of the analysis gap, which is completely memorized by the mechanical structure and has long-term stability.
3. The gap standard sheet with any thickness can be used for calibrating and analyzing the gap, and the structural compatibility is high.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1: fine adjustment mechanism 2: fixed base 3: sliding mechanism 4: the first spring 5: rod electrode 6: disk electrode 7: compression bar 8: rod clamp 9: and a second spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in the structure of the embodiment of the invention, when in installation, a compression bar 7 is installed in a limit groove of a fixed base 2 through a pin, and can rotate around the pin by 90 degrees, then a sliding mechanism 3 is installed in the sliding groove of the fixed base 2, so that the sliding mechanism can slide smoothly, one end face of the sliding mechanism can be contacted with one end of the compression bar 7, the two end faces are in half Cheng Fenli type sliding connection, and a separation point is synchronously changed along with the fine adjustment of a fine adjustment mechanism (1), and meanwhile, the other end of the sliding mechanism 3 is contacted with a first spring 4 of the fixed base 2, so that the sliding mechanism 3 can reset under the action of spring force; the rod clamp 8 is arranged on a convex block on the top surface of the sliding mechanism 3 by a pin so that the rod clamp can rotate around the pin, and a second spring 9 is arranged between the side surface of the sliding mechanism 3 and the rod clamp 8; the fine adjustment screw is mounted on the precision screw hole of the fixed base 2 with its tip in contact with one end face of the slide mechanism 3.
The application method of the embodiment is as follows: the disk electrode 6 is arranged in a rotating shaft extending out of the fixed base 2, the rod electrode 5 is placed in a V-shaped groove of the sliding mechanism 3, one end face of the rod electrode 5 is propped against the circumferential face of the disk electrode 6, then the disk electrode is clamped by the rod clamp 8, and the spring-up state of the pressing rod 7 is the initial state of the whole mechanism. When the rod electrode 5 is compressed, the rod electrode 5 is in line contact with the rod clamp 8, and the rod electrode 5 can move in displacement along the axial direction under the action of axial force. When the push rod 7 is pushed to rotate, the first half way is in an unobstructed state, when one end of the push rod 7 contacts with one end face of the sliding mechanism 3 in the second half way, the push rod 7 starts to push the sliding mechanism 3 to move downwards, the sliding mechanism 3 rigidly drives the rod electrode 5 on the rod clamp 8 to move together, the rod electrode 5 is forced to displace with the rod clamp 8 by pushing one end of the rod electrode 5 against the disc electrode 6 at one end of the fixed base 2, when the push rod 7 is recovered to be in a sprung state, the sliding mechanism 3 drives the rod clamp 8 and the rod electrode 5 to do reset movement under the action of spring force and keeps contacting with one end of the push rod (7) until one end of the sliding mechanism 3 contacts with one end of the micro-adjusting mechanism 1, and at the moment, the gap between the rod electrode 5 and the disc electrode 6 is the spectrum analysis gap.
The fine adjustment mechanism (1) is in contact with one end of the sliding mechanism (3), and the reset dead point of the sliding mechanism (3) can be continuously fine adjusted, so that the size of a spectrum analysis gap is adjusted, and the gap can be calibrated by using a gap standard piece.
In summary, the memory mechanism for rapidly setting the spectrum analysis gap provided by the invention has a simple and compact structure, and the stroke of two states of one mechanism determines the width of the analysis gap. The analysis gap position can be set by setting the top dead center of the sprung state, thereby setting the width of the analysis gap, which is completely memorized by the mechanical structure and has long-term stability. The gap standard sheet with any thickness can be used for calibrating and analyzing the gap, and the structural compatibility is high.
The foregoing examples merely illustrate embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.