Multi-parameter table colorimetric device and adjusting method

Abstract

The invention relates to the technical field of water quality detection, and particularly discloses a multi-parameter table colorimetric device and an adjusting method. Comprising an optical fiber collimator, a colorimetric pool, a cuvette, a detector and an adjusting assembly, wherein the axis of the optical fiber collimator is arranged in the X-axis direction; the colorimetric pool is provided with a mounting groove; the cuvette is detachably mounted in the mounting groove; the base is used for mounting the optical fiber collimator, the colorimetric pool, the detector and the adjusting assembly; the adjusting assembly comprises a first adjusting piece arranged at the end, away from the colorimetric pool, of the optical fiber collimator and a second adjusting piece arranged at the end, close to the colorimetric pool, of the optical fiber collimator. The first adjusting piece and the second adjusting piece are installed on the base in a sliding mode and move in the Y-axis direction. Through cooperation of the two adjusting assemblies and the base, the optical fiber emitted by the optical fiber collimator can completely irradiate the detector, the measurement precision is greatly improved, and measurement has repeatability.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and more specifically to a multi-parameter colorimetric device and an adjustment method. Background Art

[0002] The multi-parameter colorimetric device is an instrument that can simultaneously measure multiple water quality parameters (such as copper ions, iron ions, COD, turbidity, ammonia nitrogen, total phosphorus, etc.). This device is usually used in environmental monitoring, water quality analysis, industrial process control and other fields, and is characterized by high efficiency, accuracy and portability;

[0003] In the prior art, when the multi-parameter colorimetric device is used and the light source of the fiber collimating lens is placed in the colorimetric card slot, due to the long colorimetric cell and the multi-path optical fiber, all the light often does not shine on the detector, but shines on the inner wall of the colorimetric cell, resulting in a lack of measurement repeatability and poor measurement accuracy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multi-parameter colorimetric device and an adjustment method, through the cooperation of two groups of adjustment components, the optical fiber emitted by the optical fiber collimator can be completely irradiated on the detector, which greatly improves the measurement accuracy and makes the measurement repeatable;

[0005] The solution adopted by the present invention to solve the technical problem is:

[0006] A multi-parameter colorimetric device, comprising a fiber optic collimator with an axis arranged along an X-axis direction, a colorimetric cell provided with a mounting groove, a colorimetric dish detachably mounted in the mounting groove, a detector arranged on a side of the colorimetric cell away from the fiber optic collimator, an adjustment component sleeved on the outside of the fiber optic collimator and used for adjusting the position of the fiber optic collimator, and a base for mounting the fiber optic collimator, the colorimetric cell, the detector and the adjustment component;

[0007] The adjustment assembly includes an adjustment member 1 arranged at one end of the optical fiber collimator away from the colorimetric cell, and an adjustment member 2 arranged at one end of the optical fiber collimator close to the colorimetric cell; the adjustment member 1 and the adjustment member 2 are slidably mounted on the base and move along the Y-axis direction.

[0008] In some possible embodiments, the adjustment member includes a support block that is sleeved on the outside of the optical fiber collimator and is provided with a through hole, an upper adjustment member that passes through the top of the support block and has one end extending into the through hole, a lower adjustment member that passes through the bottom of the support block and has one end extending into the through hole, and two groups of intermediate adjustment members that are symmetrically arranged and have one end passing through the side of the support block; one end of the intermediate adjustment member extends into the through hole; and the support block is slidably matched with the base.

[0009] In some possible implementations, the second adjusting member has the same structure as the first adjusting member.

[0010] In some possible implementations, the axes of the two groups of intermediate adjustment members are on the same straight line A, and the axes of the upper adjustment member and the lower adjustment member are on the same straight line B; the straight line A and the straight line B intersect each other to form a cross structure.

[0011] In some possible implementations, the intersection of the cross structure is on the axis of the through hole.

[0012] In some possible embodiments, the lower adjusting member includes two groups of symmetrically arranged locking members for locking the base and the support block, and an elastic adjusting member arranged between the two groups of locking members, and the axis of the elastic adjusting member and the upper adjusting member are on the same straight line B.

[0013] In some possible embodiments, two sets of Y-direction slide grooves are arranged along the Y-axis direction and are respectively slidably matched with the adjusting member 1 and the adjusting member 2; after the support block moves to the specified position along the Y-axis direction, one end of the locking member passes through the Y-direction slide groove and is connected to the support block.

[0014] In some possible implementations, the upper adjusting member, the middle adjusting member, and the locking member are all screws, and one end of the upper adjusting member, the middle adjusting member, and the elastic adjusting member extending into the through hole is an arc-shaped structure.

[0015] In some possible embodiments, the elastic adjustment member includes a threaded section with an external thread, a spring arranged at one end of the threaded section close to the through hole, and an abutment section connected to one end of the spring away from the screw section, and the end of the abutment section away from the spring has an arc-shaped structure.

[0016] In some possible implementations, a light through hole 1 connected to the mounting groove is provided on the side of the colorimetric cell close to the fiber collimator, and a light through hole 2 connected to the mounting groove is provided on the side of the colorimetric cell close to the detector, and the light through hole 1 and the light through hole 2 are coaxially arranged.

[0017] A method for adjusting a multi-parameter colorimetric device according to the above, characterized in that:

[0018] By controlling the movement of the adjusting member 1 and the adjusting member 2 on the base along the Y-axis direction, the positional relationship between the axial direction of the optical fiber collimator and the detector is adjusted;

[0019] When the light spot formed by the light of the fiber collimator is biased to the left, the end of the entire fiber collimator away from the colorimetric cell is controlled to move to the left by adjusting member 1, and the adjusting member 2 is located between the adjusting member 1 and the colorimetric cell and supports the end of the fiber collimator close to the colorimetric cell, and the end of the fiber collimator close to the colorimetric cell moves to the right, so that the formed light spot moves to the right, so that vertical irradiation is achieved on the receiving end of the detector;

[0020] On the contrary, when the light spot is biased to the right, the end of the optical fiber collimator away from the colorimetric cell can be adjusted to the right through the adjustment member 1;

[0021] When the light spot formed by the light of the fiber collimator is biased downward, the end of the entire fiber collimator away from the colorimetric cell is controlled to move downward by adjusting the adjusting member, and the end of the fiber collimator close to the colorimetric cell moves upward; thereby, the light spot formed by the fiber collimator is vertically irradiated on the receiving end of the detector;

[0022] On the contrary, when the light spot is biased upward, the end of the optical fiber collimator away from the colorimetric cell can be adjusted upward through the adjustment member.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention realizes the adjustment of the corresponding optical fiber collimator through the cooperation of the adjustment member 1 and the adjustment member 2, which can effectively make the light spot formed by the optical fiber collimator be able to irradiate the detector;

[0025] The present invention realizes effective adjustment of the overall structure formed by the adjusting member 1, the adjusting member 2 and the optical fiber collimator in the Y-axis direction through the sliding cooperation between the adjusting member 1, the adjusting member 2 and the bottom.

[0026] The present invention provides an elastic adjustment member and utilizes the elastic force of the spring so that when the optical fiber collimator is adjusted up and down in the Z-axis direction, only the upper adjustment member needs to be adjusted, and there is no need to adjust the lower adjustment member located at the bottom of the support block; thus, the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A top view of the present invention;

[0028] Figure 2 It is a side view of the connection relationship between the adjusting member 1 and the base in the present invention;

[0029] Figure 3 A side view of the present invention when in use;

[0030] Among them: 1. Fiber optic collimator; 2. Colorimetric cell; 3. Detector; 4. Adjustment piece 1; 41. Support block; 411. Through hole; 42. Upper adjustment piece; 43. Lower adjustment piece; 431. Locking piece; 432. Elastic adjustment piece; 44. Middle adjustment piece; 441. Left adjustment piece; 442. Right adjustment piece; 5. Adjustment piece 2; 6. Base; 61. Y-axis slide groove. DETAILED DESCRIPTION

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity restriction, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention is described in detail below.

[0033] like Figure 1-Figure 3 As shown;

[0034] A multi-parameter colorimetric device, comprising an optical fiber collimator 1, a colorimetric cell 2 provided with an installation groove, a colorimetric dish detachably installed in the installation groove, a detector 3 arranged on the side of the colorimetric cell 2 away from the optical fiber collimator 1, an adjustment component sleeved on the outside of the optical fiber collimator 1 and used for adjusting the position of the optical fiber collimator 1, and a base 6 for installing the optical fiber collimator 1, the colorimetric cell 2, the detector 3 and the adjustment component; the adjustment component is divided into two groups, including an adjustment member 1 4 arranged at one end of the optical fiber collimator 1 away from the colorimetric cell 2, and an adjustment member 2 5 arranged at one end of the optical fiber collimator 1 close to the colorimetric cell 2;

[0035] The adjusting member 1 4 and the adjusting member 2 5 are slidably mounted on the base 6 and move along the Y-axis direction; through the sliding cooperation between the adjusting member 1 4 and the adjusting member 2 5 and the base 6, the position adjustment of the overall structure formed by the adjusting assembly and the optical fiber collimator 1 along the Y-axis direction can be effectively achieved;

[0036] A light through hole 1 connected to the mounting groove is provided on the side of the colorimetric cell 2 close to the optical fiber collimator 1, and a light through hole 2 connected to the mounting groove is provided on the side of the colorimetric cell 2 close to the detector 3. The light through hole 1 and the light through hole 2 are coaxially arranged.

[0037] The light source is adjusted into multiple groups of parallel light by the optical fiber collimator 1, and the multiple groups of parallel light enter the colorimetric cell 2 through the light hole 1, and then pass through the colorimetric cell and the light hole 2 to enter the receiving end of the detector 3;

[0038] When the length of the cuvette is long, the parallel light emitted by the optical fiber collimator 1 will also pass through a very long line to illuminate the detector 3. However, due to the long light, it is very easy for part of the light to fail to illuminate the detector 3, and the light will be skewed and illuminate the inner wall of the cuvette 2.

[0039] In this regard, the present invention provides two sets of adjustment members (adjustment member 1 4 and adjustment member 2 5) to adjust the optical fiber collimator 1 so that all light can be irradiated on the detector 3, thereby making the measurement more accurate and making the measurement repeatable.

[0040] For example, when the light spot formed by the light is biased to the left, it will partially or completely illuminate the left wall of the colorimetric cell 2. In response to this, the adjusting member 14 causes the end of the entire optical fiber collimator 1 away from the colorimetric cell 2 to move to the left. Since the adjusting member 25 is located between the adjusting member 14 and the colorimetric cell 2 and supports the end of the optical fiber collimator 1 close to the colorimetric cell 2, the output end of the optical fiber collimator 1 (the end close to the colorimetric cell 2) moves to the right, thereby causing the formed light spot to move to the right, so that vertical illumination is achieved on the receiving end of the detector 3. On the contrary, when the light spot is biased to the right, the end of the optical fiber collimator 1 away from the colorimetric cell 2 is adjusted to the right through the adjusting member 14.

[0041] When the light spot formed by the light is biased downward, it will partially or completely illuminate the lower wall of the colorimetric cell 2. The adjusting member 4 is adjusted so that the end of the entire fiber optic collimator 1 away from the colorimetric cell 2 is adjusted downward. Similarly, because the adjusting member 5 is arranged between the adjusting member 4 and the colorimetric cell 2, the output end of the fiber optic collimator 1 (the end close to the colorimetric cell 2) moves upward; thereby, the output end of the fiber optic collimator 1 moves upward, so that the formed light spot is vertically illuminated on the receiving end of the detector 3; on the contrary, when the light spot is biased upward, the end of the fiber optic collimator 1 away from the colorimetric cell 2 is adjusted upward through the adjusting member 4.

[0042] In some possible implementations, in order to effectively adjust the fiber collimator 1 through two groups of adjustment members, so that the light spot formed by the parallel light can be irradiated on the receiving end of the detector 3; the adjustment member 2 5 has the same structure as the adjustment member 1 4; the adjustment member 1 4 includes a support block 41 which is sleeved on the outside of the fiber collimator 1 and is provided with a through hole 411, an upper adjustment member 42 which passes through the top of the support block 41 and one end of which extends into the through hole 411, a lower adjustment member 43 which passes through the bottom of the support block 41 and one end of which extends into the through hole 411, and two groups of intermediate adjustment members 44 which are symmetrically arranged and one end of which passes through the side of the support block 41; one end of the intermediate adjustment member 44 extends into the through hole 411, and the support block 41 is slidably matched with the base 6;

[0043] A gap will be formed between the inner side surface of the through hole 411 and the outer side surface of the optical fiber collimator 1;

[0044] The two sets of middle adjustment members 44 include a left adjustment member 441 and a right adjustment member 442 ; the axes of the two are on the same straight line.

[0045] Specifically, when the light spot formed by the optical fiber collimator 1 is biased to the left, when adjusting the adjusting member 1 4, the left adjusting member 441 of the adjusting member 1 4 moves to the outside of the through hole 411, and the right adjusting member 442 of the adjusting member 1 4 moves to the inside of the through hole 411; the adjusting member 2 5 does not move;

[0046] When the light spot formed by the optical fiber collimator 1 is biased upward, when adjusting the adjusting member 4, the upper adjusting member 42 of the adjusting member 4 moves toward the outside of the through hole 411, and the lower adjusting member 43 of the adjusting member 4 moves toward the inside of the through hole 411; the adjusting member 2 5 does not move.

[0047] The through holes 411 on the adjusting member 1 4 and the adjusting member 2 5 are coaxially arranged, and the axis thereof is arranged along the X-axis direction; the adjusting member 1 4 and the adjusting member 2 5 are sleeved on the outside of the optical fiber collimator 1, and the adjusting member 2 5 is arranged between the adjusting member 1 4 and the colorimetric cell 2. The adjusting member 2 5 is mainly used to support the output end of the optical fiber collimator 1. When the formed light spot cannot be irradiated on the detector 3 through the light hole 2, the input end of the optical fiber collimator 1 is adjusted in the Y-axis or Z-axis direction through the adjusting member 1 4 so that the light spot can fall into the detector 3;

[0048] Specifically, the axes of the two groups of intermediate adjustment members 44 are on the same straight line A, and the axes of the upper adjustment member 42 and the lower adjustment member 43 are on the same straight line B; straight line A and straight line B intersect each other to form a cross structure; the intersection of the cross structure and the center of the receiving end of the detector 3 are on the axis of the through hole.

[0049] In some possible embodiments, the lower adjusting member 43 includes two groups of symmetrically arranged locking members 431 for locking the base 6 and the support block 41, and an elastic adjusting member 432 arranged between the two groups of locking members 431, and the axis of the elastic adjusting member 432 and the upper adjusting member 42 are on the same straight line B.

[0050] In some possible embodiments, the elastic adjustment member 432 includes a threaded section with an external thread, a spring arranged at one end of the threaded section close to the through hole 411, and an abutment section connected to an end of the spring away from the screw section, and the end of the abutment section away from the spring is an arc-shaped structure.

[0051] By adopting this method, when adjusting up and down along the Z-axis direction, only the upper adjusting member 42 needs to be adjusted. The spring has elastic force. When the fiber optic collimator 1 is adjusted upward, the spring will recover from the compressed state to the initial state, ensuring the support and contact with the bottom of the fiber optic collimator 1; conversely, when adjusting downward, the spring will be compressed, which can also ensure the support and contact with the bottom of the fiber optic collimator 1; thereby reducing the adjustment of the lower adjusting member 43, avoiding the situation in which the adjustment along the Z-axis direction cannot be performed due to the difficulty in operating the lower adjusting member 43 during the actual adjustment process.

[0052] In some possible implementations, the upper adjustment member 42, the middle adjustment member, and the locking member 431 are all screws, and one end of the upper adjustment member 42, the middle adjustment member, and the elastic adjustment member 432 extending into the through hole 411 is an arc-shaped structure; the arc-shaped structure is adopted to reduce the contact between the upper adjustment member 42, the middle adjustment member, and the elastic adjustment member 432 and the outer side surface of the optical fiber collimator 1 when the adjustment is achieved;

[0053] The support is provided with screw holes for use with the upper adjustment, middle adjustment and elastic adjustment parts 432, wherein the screw holes of the upper adjustment and the middle adjustment parts are through holes; the screw hole of the middle adjustment part is arranged along the Y-axis direction, and the screw holes of the upper adjustment part 42 and the elastic adjustment part 432 are arranged along the Z-axis direction, and an internal threaded hole for use with the locking part 431 is also arranged at the bottom of the support block 41, and the axis of the internal threaded hole and the axial direction of the Y-axis slide groove 61 are in the same vertical plane. After the support block 41 moves to the specified position along the Y-axis direction, one end of the locking part 431 will pass through the Y-axis slide groove 61 and be screwed with the internal threaded hole of the support block 41 to fix the support block 41.

[0054] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A multi-parameter colorimetric device, characterized in that: It includes a fiber collimator with an axis arranged along the X-axis direction, a colorimetric cell provided with a mounting groove, a colorimetric dish detachably installed in the mounting groove, a detector arranged on a side of the colorimetric cell away from the fiber collimator, an adjustment component sleeved on the outside of the fiber collimator and used for adjusting the position of the fiber collimator, and a base for installing the fiber collimator, the colorimetric cell, the detector and the adjustment component; The adjustment assembly includes an adjustment member 1 arranged at one end of the optical fiber collimator away from the colorimetric cell, and an adjustment member 2 arranged at one end of the optical fiber collimator close to the colorimetric cell; the adjustment member 1 and the adjustment member 2 are slidably mounted on the base and move along the Y-axis direction.

2. A multi-parameter colorimetric device according to claim 1, characterized in that: The adjusting member 1 includes a supporting block which is sleeved on the outside of the optical fiber collimator and is provided with a through hole, an upper adjusting member which passes through the top of the supporting block and has one end extending into the through hole, a lower adjusting member which passes through the bottom of the supporting block and has one end extending into the through hole, and two groups of intermediate adjusting members which are symmetrically arranged and have one end passing through the side surface of the supporting block; one end of the intermediate adjusting member extends into the through hole; the supporting block is slidably matched with the base.

3. A multi-parameter colorimetric device according to claim 2, characterized in that: The second adjusting member has the same structure as the first adjusting member.

4. A multi-parameter colorimetric device according to claim 2, characterized in that: The axes of the two groups of intermediate adjustment members are on the same straight line A, and the axes of the upper adjustment member and the lower adjustment member are on the same straight line B; the straight line A and the straight line B intersect each other to form a cross structure; the intersection of the cross structure is on the axis of the through hole.

5. A multi-parameter colorimetric device according to claim 2, characterized in that: The lower adjusting member comprises two groups of locking members symmetrically arranged and used to lock the base and the supporting block, and an elastic adjusting member arranged between the two groups of locking members, and the axis of the elastic adjusting member and the upper adjusting member are on the same straight line B.

6. A multi-parameter colorimetric device according to claim 5, characterized in that: The base is provided with two sets of Y-direction slide grooves which are arranged along the Y-axis direction and slideably cooperate with the adjusting member 1 and the adjusting member 2 respectively; after the supporting block moves to the specified position along the Y-axis direction, one end of the locking member passes through the Y-direction slide groove and is connected to the supporting block.

7. A multi-parameter colorimetric device according to claim 5, characterized in that: The upper adjusting member, the middle adjusting member and the locking member are all screws, and one end of the upper adjusting member, the middle adjusting member and the elastic adjusting member extending into the through hole is an arc-shaped structure.

8. A multi-parameter colorimetric device according to claim 5, characterized in that: The elastic adjusting member comprises a threaded section with an external thread, a spring arranged at one end of the threaded section close to the through hole, and an abutting section connected to one end of the spring away from the screw section, wherein the end of the abutting section away from the spring is an arc-shaped structure.

9. A multi-parameter colorimetric device according to any one of claims 1 to 8, characterized in that: A light hole 1 connected to the mounting groove is arranged on the side of the colorimetric cell close to the optical fiber collimator, and a light hole 2 connected to the mounting groove is arranged on the side of the colorimetric cell close to the detector. The light hole 1 and the light hole 2 are arranged coaxially.

10. A method for adjusting a multi-parameter colorimetric device according to any one of claims 1 to 9, characterized in that: By controlling the movement of the adjusting member 1 and the adjusting member 2 on the base along the Y-axis direction, the positional relationship between the axial direction of the optical fiber collimator and the detector is adjusted; When the light spot formed by the light of the fiber collimator is biased to the left, the end of the entire fiber collimator away from the colorimetric cell is controlled to move to the left by adjusting member 1, and the adjusting member 2 is located between the adjusting member 1 and the colorimetric cell and supports the end of the fiber collimator close to the colorimetric cell, and the end of the fiber collimator close to the colorimetric cell moves to the right, so that the formed light spot moves to the right, so that vertical irradiation is achieved on the receiving end of the detector; On the contrary, when the light spot is biased to the right, the end of the optical fiber collimator away from the colorimetric cell can be adjusted to the right through the adjustment member 1; When the light spot formed by the light of the fiber collimator is biased downward, the end of the entire fiber collimator away from the colorimetric cell is controlled to move downward by adjusting the adjusting member, and the end of the fiber collimator close to the colorimetric cell moves upward; thereby, the light spot formed by the fiber collimator is vertically irradiated on the receiving end of the detector; On the contrary, when the light spot is biased upward, the end of the optical fiber collimator away from the colorimetric cell can be adjusted upward through the adjustment member.

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