Dissolved oxygen tester capable of conveniently fixing probe

Abstract

The utility model relates to a dissolved oxygen determinator capable of conveniently fixing a probe, which comprises a determinator main body and a detection probe which are connected through a signal line, the determinator main body is connected with a probe bracket, the top end of the probe bracket is connected with a fixing plate, the fixing plate is provided with a vertical positioning hole matched with the detection probe in size, and the probe bracket is connected with the probe bracket. The hole wall of the positioning hole is provided with a guide groove, the length and the direction of the guide groove are matched with the axis of the positioning hole, the guide groove is communicated with a plurality of positioning grooves, the positioning grooves extend in the perimeter direction of the horizontal section of the positioning hole and are further arranged in the length direction of the guide groove, and the side face of the detection probe is provided with a clamping block. The clamping blocks are matched with the guide grooves and the positioning grooves in size; after the detection probe is inserted into the positioning hole, the clamping block sequentially moves along the guide groove and the positioning groove, the height of the detection probe is fixed through the positioning groove, the detection probe cannot be damaged, and the detection probe can be rapidly fixed to start dissolved oxygen measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality analysis, and in particular to a dissolved oxygen meter capable of conveniently fixing a probe. Background Art

[0002] The amount of dissolved oxygen in water is an indicator of the water's self-purification capacity. A dissolved oxygen meter is a device for measuring dissolved oxygen in water. Its operating principle is that oxygen is reduced by the working electrode through a diaphragm, generating a diffusion current proportional to the oxygen concentration. By measuring this current, the dissolved oxygen concentration in the water is determined. Existing dissolved oxygen meters use a probe bracket to elevate a fixed plate. Multiple vertical through-holes are provided on the plate, and openings are opened on the side of the plate to press the detection probe into the through-holes. The opening and the clamping groove are both slightly smaller than the detection probe, forming a clamping groove structure. When the detection probe enters and exits the clamping groove, the opening is squeezed and expanded. The opening then recovers due to the toughness of the fixing plate, pressing the detection probe into the clamping groove and securing it. The sensor at the bottom of the probe extends into the liquid to be measured. However, the detection probe is easily scratched by the edge of the opening during the squeezing process. Inaccurate force application can easily cause the fixing plate to break or the detection probe shell to rupture, causing damage to the dissolved oxygen meter. Furthermore, after the detection probe is pressed into the clamping groove, it is subjected to high pressure, making it difficult to push the detection probe along the through hole for lifting and lowering. The detection probe often needs to be removed, adjusted, and re-pressed into the clamping groove, resulting in reduced dissolved oxygen measurement efficiency. Therefore, designing a dissolved oxygen meter with a convenient fixed probe that can avoid probe damage and improve measurement efficiency has become an urgent technical problem to be solved. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a dissolved oxygen meter capable of conveniently fixing a probe.

[0004] The technical solution of the present utility model is a dissolved oxygen meter that can conveniently fix the probe, comprising a meter body and a detection probe connected by a signal line, the meter body being connected to a probe holder, the top of the probe holder being connected to a fixing plate, the fixing plate being provided with a vertical positioning hole whose size matches that of the detection probe, the hole wall of the positioning hole being provided with a guide groove, the length and direction of the guide groove both matching the axis of the positioning hole, the guide groove being connected with a plurality of positioning grooves, the positioning grooves extending along the circumference direction of the horizontal cross-section of the positioning hole, the positioning grooves also being arranged along the length direction of the guide grooves, the side of the detection probe being provided with a snap-in block, the snap-in block matching the size of the guide groove and the positioning groove.

[0005] After adopting the above structure, by passing the bottom end of the detection probe downward through the vertical positioning hole and rotating the detection probe horizontally, the side clamping block is aligned with the position of the guide groove. The length and direction of the guide groove are matched with the axis of the positioning hole. When the detection probe continues to move downward, the clamping block is brought into the guide groove; after entering the guide groove through the clamping block, the detection probe is rotated horizontally again so that the clamping block enters the positioning groove connected to the guide groove. Since the positioning groove corresponds to the circumference direction of the horizontal cross-section of the positioning hole, the positioning groove is perpendicular to the axis of the positioning hole, and the groove body is in a horizontal state, so that the detection probe cannot continue to rise and fall, and the height of the detection probe on the fixed plate is fixed; by returning the clamping block to the guide groove, the detection probe is lifted and lowered so that the clamping block is aligned with different positioning grooves and enters, and the height of the detection probe can be quickly adjusted; after the detection probe is inserted into the positioning hole, the clamping block moves along the guide groove and the positioning groove in sequence, and the horizontal positioning groove prevents the detection probe from rising and falling, thereby fixing the height of the detection probe, and will not scratch the detection probe and cause damage, which helps to quickly fix the detection probe to start dissolved oxygen measurement.

[0006] As a further improvement of the present invention, the probe bracket includes multiple adjustment arms and a horizontal rotating shaft axially connected between the adjustment arms. The fixed plate is provided with a vertical rotating shaft axially connected to the adjustment arms. Both the horizontal rotating shaft and the vertical rotating shaft are damping rotating shafts.

[0007] After adopting the above structure, the multi-section adjusting arm is axially connected using a horizontal rotating shaft, and the fixed plate is axially connected to the adjusting arm using a vertical rotating shaft and connected to the top of the probe bracket. The adjusting arm and the fixed plate are rotated using the horizontal rotating shaft and the vertical rotating shaft to adjust the position of the fixed plate to match the size of the container containing the water sample to be tested; since both the horizontal rotating shaft and the vertical rotating shaft are damping rotating shafts, the adjusting arm and the fixed plate can be kept from deflecting due to their own weight.

[0008] As a further improvement of the present invention, a marking line is provided on the side of the detection probe, and the marking line passes through the clamping block in a vertical direction.

[0009] After adopting the above structure, the marking line passes vertically through the clamping block. When the detection probe needs to be rotated to make the clamping block enter and exit the positioning groove, the position of the marking line relative to the guide groove can be observed to determine whether the clamping block has moved into place.

[0010] As a further improvement of the present invention, a first magnet is fixed in the clamping block, and a second magnet matching the magnetic pole of the first magnet is provided on the inner wall of the positioning groove.

[0011] After adopting the above structure, after the clamping block enters the positioning groove, the first magnet and the second magnet with matching magnetic poles are attracted to each other, and the position of the clamping block is fixed by magnetic attraction, so as to prevent the clamping block from being accidentally touched during the measurement process and moving back to the guide groove, causing the detection probe to fall into the liquid to be tested.

[0012] As a further improvement of the present invention, the edges of the clamping block are chamfered.

[0013] After adopting the above structure, the edges of the clamping block are chamfered so that the clamping block can smoothly enter and exit the guide groove and the positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic structural diagram of the utility model.

[0015] Figure 2 Shown is a schematic diagram of the detection probe structure.

[0016] Figure 3 Shown is a schematic diagram of the positioning hole structure of part A.

[0017] Figure 4 Shown is a schematic diagram of the structure of the card connection block in part B.

[0018] 1- measuring instrument body, 2- detection probe, 3- probe bracket, 4- fixing plate, 5- positioning hole, 6- guide groove, 7- positioning groove, 8- clamping block, 9- marking line, 10- first magnet, 11- second magnet. DETAILED DESCRIPTION

[0019] like Figure 1-Figure 4 The figure shows a dissolved oxygen meter that can conveniently fix the probe, including a meter body 1 and a detection probe 2 connected by a signal line, the meter body 1 is connected to a probe bracket 3, the top of the probe bracket 3 is connected to a fixing plate 4, the fixing plate 4 is provided with a vertical positioning hole 5 whose size matches the detection probe, the hole wall of the positioning hole 5 is provided with a guide groove 6, the length and direction of the guide groove 6 are matched with the axis of the positioning hole 5, the guide groove 6 is connected with a plurality of positioning grooves 7, the positioning groove 7 extends along the circumference direction of the horizontal cross-section of the positioning hole 5, and the positioning groove 7 is also arranged along the length direction of the guide groove 6, the side of the detection probe 2 is provided with a clamping block 8, the clamping block 8 matches the size of the guide groove 6 and the positioning groove 7.

[0020] By passing the bottom end of the detection probe 2 downward through the vertical positioning hole 5 and rotating the detection probe 2 horizontally, the side clamping block 8 is aligned with the position of the guide groove 6. The length and direction of the guide groove 6 match the axis of the positioning hole 5. When the detection probe 2 continues to move downward, the clamping block 8 is brought into the guide groove 6; after entering the guide groove 6 through the clamping block 8, the detection probe 2 is rotated horizontally again to make the clamping block 8 enter the positioning groove 7 connected to the guide groove 6. Since the positioning groove 7 corresponds to the circumference direction of the horizontal section of the positioning hole 5, the positioning groove 7 is perpendicular to the axis of the positioning hole 5, and the groove body is at In a horizontal state, the detection probe 2 cannot be further raised or lowered, and the height of the detection probe 2 on the fixing plate 4 is fixed; by returning the clamping block 8 into the guide groove 6, the detection probe 2 is raised or lowered so that the clamping block 8 is aligned with different positioning grooves 7 and enters, the height of the detection probe 2 can be quickly adjusted; after the detection probe 2 is numerically inserted into the positioning hole 5, the clamping block 8 moves along the guide groove 6 and the positioning groove 7 in sequence, and the positioning groove 7 in a horizontal state prevents the detection probe 2 from being raised or lowered, thereby fixing the height of the detection probe 2 and preventing the detection probe 2 from being scratched or damaged, thereby helping to quickly fix the detection probe 2 to start dissolved oxygen measurement.

[0021] The probe bracket 3 includes multiple adjustment arms and a horizontal rotating shaft axially connected between the adjustment arms. The fixed plate 4 is provided with a vertical rotating shaft axially connected to the adjustment arms. Both the horizontal rotating shaft and the vertical rotating shaft are damping rotating shafts.

[0022] The multi-section adjusting arm is pivotally connected using a horizontal rotating shaft, and the fixed plate 4 is pivotally connected to the adjusting arm using a vertical rotating shaft, and is connected to the top of the probe bracket 3. The adjusting arm and the fixed plate 4 are rotated by the horizontal rotating shaft and the vertical rotating shaft, so that the position of the fixed plate 4 can be adjusted to match the size of the container containing the water sample to be tested; because both the horizontal rotating shaft and the vertical rotating shaft are damping rotating shafts, the adjusting arm and the fixed plate 4 can be kept from being deflected due to their own weight.

[0023] A marking line 9 is provided on the side of the detection probe 2 , and the marking line 9 passes through the clamping block 8 in a vertical direction.

[0024] The marking line 9 passes vertically through the clamping block 8. When the detection probe 2 needs to be rotated to make the clamping block 8 enter and exit the positioning groove 7, the position of the marking line 9 relative to the guide groove 6 can be observed to determine whether the clamping block 8 has moved into place.

[0025] A first magnet 10 is fixed in the clamping block 8 , and a second magnet 11 matching the magnetic pole of the first magnet 10 is provided on the inner wall of the positioning groove 7 .

[0026] After the clamping block 8 enters the positioning groove 7, the first magnet 10 is attracted to the second magnet 11 with matching magnetic poles, and the position of the clamping block 8 is fixed by magnetic attraction, so as to prevent the clamping block 8 from being accidentally touched during the measurement process and moving back to the guide groove 6, causing the detection probe 2 to fall into the liquid to be tested.

[0027] The edges of the clamping block 8 are chamfered.

[0028] The edges of the clamping block 8 are chamfered so that the clamping block 8 can smoothly enter and exit the guide groove 6 and the positioning groove 7 .

Claims

1. A dissolved oxygen meter capable of conveniently fixing a probe, comprising a meter body (1) and a detection probe (2) connected by a signal line, wherein the meter body (1) is connected to a probe holder (3), and the top end of the probe holder (3) is connected to a fixing plate (4), characterized in that: The fixing plate (4) is provided with a vertical positioning hole (5) whose size matches that of the detection probe (2); a guide groove (6) is provided on the hole wall of the positioning hole (5); the length and direction of the guide groove (6) match the axis of the positioning hole (5); the guide groove (6) is connected to a plurality of positioning grooves (7); the positioning grooves (7) extend along the circumference direction of the horizontal cross section of the positioning hole (5); the positioning grooves (7) are also arranged along the length direction of the guide groove (6); a clamping block (8) is provided on the side of the detection probe (2); the clamping block (8) matches the size of the guide groove (6) and the positioning groove (7).

2. A dissolved oxygen meter capable of conveniently fixing a probe according to claim 1, characterized in that: The probe bracket (3) comprises a plurality of adjustment arms and a horizontal rotating shaft axially connected between the adjustment arms; the fixed plate (4) is provided with a vertical rotating shaft axially connected to the adjustment arms; and both the horizontal rotating shaft and the vertical rotating shaft are damping rotating shafts.

3. A dissolved oxygen meter capable of conveniently fixing a probe according to claim 1, characterized in that: A marking line (9) is provided on the side of the detection probe (2), and the marking line (9) passes through the clamping block (8) in a vertical direction.

4. A dissolved oxygen meter capable of conveniently fixing a probe according to claim 1, characterized in that: A first magnet (10) is fixed in the clamping block (8), and a second magnet (11) matching the magnetic pole of the first magnet (10) is provided on the inner wall of the positioning groove (7).

5. The dissolved oxygen meter capable of conveniently fixing the probe according to claim 1, characterized in that: The edge of the clamping block (8) is chamfered.

Images