Explosion-proof flow cell

Abstract

The invention relates to a detection instrument, in particular to an anti-explosion flow cell which comprises an optical fiber connecting mechanism and a fixing mechanism, the fixing mechanism comprises a body and a connecting part which are connected, a collimator is arranged in the fixing mechanism, the collimator is provided with a flange part, and the flange part is installed in an outer ring of the body; a cover body of the connecting part is connected with the body, and the flange part abuts against the outer ring of the body; the optical fiber connecting mechanism comprises a fixing piece; an annular part of the fixing piece is mounted in an outer ring of the connecting part; the sleeve part of the movable part is provided with a first hook-shaped part, and the first hook-shaped part is connected with the second hook-shaped part of the locking part and used for locking the fixed part; the end face of the first hook-shaped part faces the annular part of the fixing piece, and the locking part can be rotated to enable the end face of the first hook-shaped part to abut against the annular part of the fixing piece in the outer ring of the connecting part. According to the invention, multi-stage sealing can be realized by arranging stacked mechanisms such as the connecting part, the fixed part and the movable part on one side of the first end of the collimator, and the collimator is easy to disassemble and assemble.

Description

Technical Field

[0001] The invention relates to a detection instrument, in particular to an explosion-proof flow cell. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] The liquid detection circulation cell is a detection instrument that passes light through liquid and analyzes the light. It needs to include an area for liquid circulation, and transmit light to the circulation area to achieve the above functions. In some scenarios, corrosive liquids also need to be detected, especially highly corrosive chloroacetic acid. The sealing of existing circulation cells is not good, so leakage often occurs, especially at the connection between the circulation cell and the optical fiber, which may cause structural damage. In addition, some other existing circulation cells have made efforts in sealing, but the structure is cumbersome, which affects the convenience of installation.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0005] The purpose of the present invention is to provide an explosion-proof flow cell, which can achieve multi-stage sealing by arranging overlapping connecting parts, fixing parts, movable parts and other mechanisms on one side of the first end of the collimator, has good sealing performance, and is easy to disassemble and install.

[0006] In order to achieve the above object, the present invention discloses the following explosion-proof flow cell, the explosion-proof flow cell having a first end and a second end opposite to each other, the explosion-proof flow cell including an optical fiber connection mechanism and a fixing mechanism in sequence from the first end to the second end;

[0007] Wherein, the fixing mechanism comprises a connecting portion and a body connected in sequence from a first end to a second end thereof, and the body has a through hole for connecting an optical fiber;

[0008] A collimator is arranged inside the fixing mechanism, a docking joint is arranged at the first end of the collimator, the docking joint is connected to the output end of the optical fiber, the second end of the collimator is inserted into the through hole, a flange portion is arranged between the first end and the second end of the collimator, a body outer ring which is concave in the radial direction is arranged on the inner wall of the through hole facing the second end of the collimator, and the flange portion is installed in the body outer ring;

[0009] The inner wall of the first end of the connecting portion is provided with a connecting portion outer ring which is concave in the radial direction, and the second end of the connecting portion is provided with a cover body, the cover body is connected to the main body and presses the flange portion tightly against the main body outer ring;

[0010] The optical fiber connection mechanism comprises:

[0011] A fixing member, the fixing member is sleeved outside the optical fiber, an annular portion is provided between the first end and the second end of the fixing member, and the annular portion is installed in the outer ring of the connecting portion;

[0012] A movable part, the movable part comprises a sleeve part and a locking part, the sleeve part is sleeved outside the optical fiber, the second end of the sleeve part is provided with a first hook-shaped part, the locking part has a first end and a second end arranged oppositely, the first end of the locking part is provided with a second hook-shaped part matching the first hook-shaped part, the first end of the locking part is sleeved on the second end of the sleeve part, the second end of the locking part is sleeved on the first end of the connecting part, and is threadedly connected to the first end of the connecting part;

[0013] The end surface of the first hook portion at the second end of the sleeve portion is arranged toward the annular portion of the fixing member, so that the end surface of the first hook portion at the second end of the sleeve portion can press the annular portion of the fixing member against the outer ring of the connecting portion by rotating the locking portion.

[0014] As a further description of the above technical solution, the size of the annular portion of the fixing member matches the size of the outer ring of the connecting portion, so that when the fixing member is locked, the end surface of the first hook-shaped portion at the second end of the sleeve portion jointly presses the annular portion of the fixing member against the end surface of the outer ring of the connecting portion.

[0015] As a further description of the above technical solution, a sealing ring is provided between the end surface of the first hook-shaped portion of the second end of the sleeve portion and the end surfaces of the annular portion of the fixing member and the outer ring of the connecting portion.

[0016] As a further description of the above technical solution, a sealing ring is arranged between the cover body and the flange portion.

[0017] As a further description of the above technical solution, a sealing ring is arranged between the flange portion and the outer ring of the main body.

[0018] As a further description of the above technical solution, the first end of the fixing member extends into the sleeve portion, and a sealing ring is provided between the first end of the fixing member and the optical fiber.

[0019] As a further description of the above technical solution, the sleeve portion is provided with a limiting portion with an annular protrusion, and the limiting portion is arranged on one side of the first hook portion toward the first end direction of the sleeve portion, so that the second hook portion is limited to a position between the first hook portion and the limiting portion.

[0020] As a further description of the above technical solution, an outer hexagon is provided at the connection between the optical fiber and the fixing member, and an inner hexagon matching the outer hexagon of the optical fiber is provided on the inner wall of the second end of the fixing member.

[0021] As a further description of the above technical solution, the outer wall of the first end of the fixing member is provided with an outer hexagon.

[0022] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0023] The explosion-proof flow cell of the present invention can achieve multi-level sealing by arranging overlapping connecting parts, fixing parts, movable parts and other mechanisms on one side of the first end of the collimator, and is easy to disassemble and install. Specifically, the locking part of the movable part is tightened on the connecting part, so that the fixing part is pressed tightly against the outer ring of the connecting part, and the connecting part itself uses the cover body at its second end to press the flange part of the collimator against the outer ring of the main body, so that the optical fiber passing through the inside has better sealing, avoiding corrosive gases in the air from entering and damaging internal parts, or water vapor from entering to form condensed water and affecting the detection results.

[0024] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 is a cross-sectional view of an explosion-proof flow cell provided in an embodiment of this specification;

[0027] Figure 2 This is a three-dimensional diagram of the connection part of an explosion-proof flow cell provided in an embodiment of this specification;

[0028] Figure 3 It is a side view of a fixing part of an explosion-proof flow cell provided in an embodiment of this specification;

[0029] Figure 4 It is a cross-sectional view of a fixing part of an explosion-proof flow cell provided in an embodiment of this specification;

[0030] Figure 5 It is a stereoscopic diagram of an optical fiber of an explosion-proof flow cell provided in an embodiment of this specification;

[0031] Figure 6 It is a schematic diagram of the alignment of the annular portion and the connecting portion of an explosion-proof flow cell provided in an embodiment of this specification;

[0032] In the figure:

[0033] 100. Optical fiber;

[0034] 1. body; 11. through hole; 12. outer ring of body;

[0035] 2. collimator; 21. butt joint; 22. flange;

[0036] 3. Connecting part; 31. Connecting part outer ring; 32. Cover body;

[0037] 4. fixing member; 41. annular portion;

[0038] 5. movable part; 51. sleeve portion; 511. first hook-shaped portion; 512. limiting portion; 52. locking portion; 521. second hook-shaped portion. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0040] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0041] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0042] See also Figure 1-6 , is an explosion-proof flow cell of the present embodiment, the explosion-proof flow cell has a first end and a second end opposite to each other, and the explosion-proof flow cell includes an optical fiber connection mechanism and a fixing mechanism in sequence from the first end to the second end;

[0043] The fixing mechanism includes a connecting portion 3 and a body 1 which are sequentially connected from the first end to the second end thereof, and the body 1 has a through hole 11 for connecting the optical fiber 100;

[0044] A collimator 2 is arranged inside the fixing mechanism. The collimator 2 has a first end and a second end which are arranged opposite to each other. A docking joint is arranged at the first end of the collimator 2. The docking joint 21 is connected to the output end of the optical fiber 100. The second end of the collimator 2 is inserted into the through hole 11. A flange portion 22 is arranged between the first end and the second end of the collimator 2. A body outer ring 12 which is concave in the radial direction is arranged on the inner wall of the through hole 11 which faces the second end of the collimator 2. The flange portion 22 is installed in the body outer ring 12.

[0045] The inner wall of the first end of the connecting portion 3 is provided with a connecting portion outer ring 31 which is concave in the radial direction, and the second end of the connecting portion 3 is provided with a cover body 32, which is connected to the body 1 and presses the flange portion 22 tightly against the body outer ring 12;

[0046] The optical fiber connection mechanism includes:

[0047] A fixing member 4, which is sleeved outside the optical fiber 100, and has a first end and a second end that are oppositely arranged, and an annular portion 41 is arranged between the first end and the second end of the fixing member 4, and the annular portion 41 is installed in the outer ring 31 of the connecting portion;

[0048] The movable member 5 includes a sleeve portion 51 and a locking portion 52. The sleeve portion 51 has a first end and a second end that are oppositely arranged. The sleeve portion 51 is sleeved outside the optical fiber 100. The second end of the sleeve portion 51 is provided with a first hook-shaped portion 511. The locking portion 52 has a first end and a second end that are oppositely arranged. The first end of the locking portion 52 is provided with a second hook-shaped portion 521 that matches the first hook-shaped portion 511. The first end of the locking portion 52 is sleeved on the second end of the sleeve portion 51. The second end of the locking portion 52 is sleeved on the first end of the connecting portion 3 and is threadedly connected to the first end of the connecting portion 3.

[0049] Among them, the end face of the first hook-shaped portion 511 at the second end of the sleeve portion 51 is arranged to face the annular portion 41 of the fixing member 4, so that the end face of the first hook-shaped portion 511 at the second end of the sleeve portion 51 can press the annular portion 41 of the fixing member 4 against the outer ring 31 of the connecting portion by rotating the locking portion 52.

[0050] With respect to the above structure, during installation, the collimator 2 can be pre-installed in the through hole 11 of the main body 1, specifically, the flange portion 22 of the collimator 2 is embedded in the annular space formed by the retreat of the main body outer ring 12 of the through hole 11, and then the cover body 32 of the connecting portion 3 is connected to the main body 1. Specifically, the outer wall of the main body 1 has a first mounting hole, and the cover body 32 also has a second mounting hole matching the mounting hole. An external fastener penetrates the first mounting hole and the second mounting hole at the same time, so that the cover body 32 is detachably fixed to the outer wall of the main body 1, so that the flange portion 22 of the collimator 2 is only pressed into the outer ring 12 of the main body by means of the cover body 32, thereby achieving the first sealing. Then, the fixing part 4 is sleeved on the optical fiber 100, and the optical fiber 100 is inserted along the first end direction of the connecting part 3, so that the output end of the optical fiber 100 is simultaneously inserted into the docking joint of the collimator 2. At this time, the locking part 52 of the movable part 5 can be screwed in toward the first end direction of the connecting part 3. Since the first hook-shaped part 511 of the sleeve part 51 and the second hook-shaped part 521 of the locking part 52 are hooked and matched with each other, the end face of the first hook-shaped part 511 of the sleeve part 51 can be driven to press toward the annular part 41 of the fixing part 4 during the process of screwing in the locking part 52, so that the annular part 41 of the fixing part 4 is pressed tightly against the outer ring 31 of the connecting part, thereby achieving a second seal.

[0051] In the above-mentioned use process, the operator only needs to sequentially set the components according to the corresponding overlapping relationship to complete the tissue connection, and realize the rapid installation of the structure by rotating and tightening the locking part 52. On the contrary, when disassembly is required, it is only necessary to rotate the locking part 52 in the opposite direction to realize disengagement. With the help of the above-mentioned structure, the installation efficiency can be improved, and the front and rear of the collimator 2 are tightly sealed, and the front and rear of the annular part 41 are tightly sealed. In essence, from the perspective of physical structure, the explosion-proof flow cell is sealed at multiple levels, which has excellent sealing performance, avoids the penetration of corrosive liquids on the through-hole side, and indirectly reduces possible structural damage.

[0052] Meanwhile, in the above structure, when the optical fiber 100 needs to be removed, it can be achieved by simply removing the movable part 5 without removing the connecting part 3 connected to the main body, which is easy to disassemble.

[0053] Furthermore, the size of the annular portion 41 of the fixing member 4 matches the size of the outer ring 31 of the connecting portion, so that when the fixing member 4 is locked, the end surface of the first hook-shaped portion 511 at the second end of the sleeve portion 51 presses the annular portion 41 of the fixing member 4 against the end surface of the outer ring 31 of the connecting portion. Figure 6 In this embodiment, the end face of the connecting portion outer ring 31 and the end face of the annular portion 41 facing the first end of the fixing member 4 form a complete plane, so that the first hook-shaped portion 511 can press the above two end faces together, and a good sealing effect is formed between the first hook-shaped portion 511, the annular portion 41, and the connecting portion outer ring 31. Furthermore, a sealing ring is provided between the end face of the first hook-shaped portion 511 at the second end of the sleeve portion 51 and the end faces of the annular portion 41 of the fixing member 4 and the connecting portion outer ring 31. The sealing ring provided here further strengthens the adjacent sealing effect between the first hook-shaped portion 511, the annular portion 41, and the connecting portion outer ring 31.

[0054] Furthermore, a sealing ring is provided between the cover body 32 and the flange part 22, and a sealing ring is provided between the flange part 22 and the outer ring 12 of the main body. Through the above-mentioned structure, when the flange part 22 is pressed tightly by the cover body 32, the front and rear of the flange part 22 have a better sealing effect. Among them, the flange part 22 is a structure closer to the main body 1 for holding the direction of the liquid to be detected, and its sealing performance is better guaranteed. It is worth noting that the diameter of the flange part 22 along the axial direction is significantly larger than the diameter of other parts of the collimator 2, similar to a protruding disc-shaped structure.

[0055] Furthermore, the first end of the fixing member 4 extends into the sleeve portion 51, and a sealing ring is provided between the first end of the fixing member 4 and the optical fiber 100. Figure 4 An annular groove for placing a sealing ring is provided on the inner wall of the first end of the fixing member 4. The tube diameter of the fixing member 4 matches the optical fiber 100, so that the sealing ring is tightly pressed between the fixing member 4 and the outer wall of the optical fiber 100, forming a better sealing effect.

[0056] For further information, see Figure 1 The sleeve portion 51 is provided with a ring-shaped protruding limiting portion 521, which is provided on one side of the first hook portion 511 in the direction of the first end of the sleeve portion 51, so that the second hook portion 521 is limited to a position between the first hook portion 511 and the limiting portion 512. Specifically, by providing the limiting portion 512, the locking portion 52 can only move within a limited space relative to the sleeve portion 51, so that when the locking portion 52 is completely locked, the locking portion 52 can also rotate relative to the sleeve portion 51, and the sleeve portion 51 itself cannot be completely separated from the locking portion 52, thereby preventing the parts from being separated and lost.

[0057] For further information, see Figure 3-5 , wherein an outer hexagon is provided at the connection between the optical fiber 100 and the fixing member 4, and an inner hexagon matching the outer hexagon of the optical fiber 100 is provided on the inner wall of the second end of the fixing member 4. At the same time, an outer hexagon is provided on the outer wall of the first end of the fixing member 4. With the above structure, when the fixing member 4 is sleeved on the optical fiber 100, the relative rotation angle between the two can be limited by the cooperation of the inner and outer hexagon structures. At the same time, with the help of the outer hexagon of the outer wall of the fixing member 4, the rotation of the fixing member 4 can be driven by the rotation of the optical fiber 100 with the help of an external tool, which makes it easy to install and adjust the optical fiber 100.

[0058] In the cross-sectional view and the side view of the above embodiment, the first direction mentioned therein refers to the left direction of the drawing, and the second direction refers to the right direction of the drawing.

[0059] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the scope of the present invention.

[0060] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0061] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. An explosion-proof flow cell, characterized in that: The explosion-proof flow cell has a first end and a second end opposite to each other, and the explosion-proof flow cell includes an optical fiber connection mechanism and a fixing mechanism in sequence from the first end to the second end; Wherein, the fixing mechanism comprises a connecting portion and a body connected in sequence from a first end to a second end thereof, and the body has a through hole for connecting an optical fiber; A collimator is arranged inside the fixing mechanism, a docking joint is arranged at the first end of the collimator, the docking joint is connected to the output end of the optical fiber, the second end of the collimator is inserted into the through hole, a flange portion is arranged between the first end and the second end of the collimator, a body outer ring which is concave in the radial direction is arranged on the inner wall of the through hole facing the second end of the collimator, and the flange portion is installed in the body outer ring; The inner wall of the first end of the connecting portion is provided with a connecting portion outer ring which is concave in the radial direction, and the second end of the connecting portion is provided with a cover body, the cover body is connected to the main body and presses the flange portion tightly against the main body outer ring; The optical fiber connection mechanism comprises: A fixing member, the fixing member is sleeved outside the optical fiber, an annular portion is provided between the first end and the second end of the fixing member, and the annular portion is installed in the outer ring of the connecting portion; A movable part, the movable part comprises a sleeve part and a locking part, the sleeve part is sleeved outside the optical fiber, the second end of the sleeve part is provided with a first hook-shaped part, the locking part has a first end and a second end arranged oppositely, the first end of the locking part is provided with a second hook-shaped part matching the first hook-shaped part, the first end of the locking part is sleeved on the second end of the sleeve part, the second end of the locking part is sleeved on the first end of the connecting part, and is threadedly connected to the first end of the connecting part; The end surface of the first hook portion at the second end of the sleeve portion is arranged toward the annular portion of the fixing member, so that the end surface of the first hook portion at the second end of the sleeve portion can press the annular portion of the fixing member against the outer ring of the connecting portion by rotating the locking portion.

2. The explosion-proof flow cell according to claim 1, characterized in that: The size of the annular portion of the fixing member matches the size of the outer ring of the connecting portion, so that when the fixing member is locked, the end surface of the first hook-shaped portion at the second end of the sleeve portion jointly presses the annular portion of the fixing member against the end surface of the outer ring of the connecting portion.

3. The explosion-proof flow cell according to claim 2, characterized in that: A sealing ring is arranged between the end surface of the first hook-shaped portion at the second end of the sleeve portion, the annular portion of the fixing member and the end surface of the outer ring of the connecting portion.

4. The explosion-proof flow cell according to claim 1, characterized in that: A sealing ring is arranged between the cover body and the flange portion.

5. The explosion-proof flow cell according to claim 1, characterized in that: A sealing ring is arranged between the flange part and the outer ring of the main body.

6. The explosion-proof flow cell according to claim 1, characterized in that: The first end of the fixing member extends into the sleeve portion, and a sealing ring is arranged between the first end of the fixing member and the optical fiber.

7. The explosion-proof flow cell according to claim 1, characterized in that: The sleeve portion is provided with a limiting portion with an annular protrusion, and the limiting portion is arranged on one side of the first hook portion toward the first end of the sleeve portion, so that the second hook portion is limited at a position between the first hook portion and the limiting portion.

8. The explosion-proof flow cell according to claim 1, characterized in that: An outer hexagon is provided at the connection point between the optical fiber and the fixing member, and an inner hexagon matching the outer hexagon of the optical fiber is provided on the inner wall of the second end of the fixing member.

9. The explosion-proof flow cell according to claim 8, characterized in that: The outer wall of the first end of the fixing member is provided with an outer hexagon.

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