Combined rectangular tube structure

Abstract

The utility model discloses a combined rectangular tube structure which comprises a bottom support, a first inserting hole is formed in one end of the bottom support, a second inserting hole communicated with the first inserting hole is formed in the other end of the bottom support, an atomizer connector is inserted into the first inserting hole in a matched mode, and a central tube connector is inserted into the second inserting hole in a matched mode. The end, away from the atomizer connector, of the bottom support is detachably connected with a rectangular tube base, the end, close to the atomizer connector, of the rectangular tube base is provided with a third insertion hole matched with the central tube connector in an inserted mode, and a fourth insertion hole communicated with the third insertion hole is formed in the rectangular tube base. A fifth inserting hole communicated with the fourth inserting hole is formed in the end, away from the atomizer connector, of the rectangular tube base, a rectangular tube inner tube is inserted and matched with the end, away from the atomizer connector, of the central tube connector, and a rectangular tube middle tube arranged on the outer side of the rectangular tube inner tube in a sleeving mode is inserted and matched with the interior of the fourth inserting hole; a rectangular pipe outer pipe arranged on the outer side of the rectangular pipe middle pipe in a sleeving mode is inserted into the fifth inserting hole in a matched mode. The use cost of the instrument is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of rectangular tubes, in particular to a combined rectangular tube structure. Background Art

[0002] The quartz torch is a device widely used in the fields of spectral analysis, chemical analysis, etc. It is mainly made of high-quality quartz and is used to generate and maintain plasma, which is the key to the ICP-MS analysis process. The design and material selection of the quartz torch are crucial to ensure the stability of the plasma and the accuracy of the analysis results.

[0003] A small-diameter torch tube is disclosed in a Chinese utility model patent with publication number CN210665506U, comprising an outer tube and an inner tube, an intermediate tube is arranged on the outer side of the inner tube, an outer tube is arranged on the outer side of the intermediate tube, a first gas circuit interface is arranged on the outer tube, a second gas circuit interface is arranged on the intermediate tube located at the lower part of the outer tube, an inner diameter of the intermediate tube is set to 0.6 mm, the outer tube, the intermediate tube and the inner tube are set to a three-layer integrated structure, and the outer sides of the first gas circuit interface and the second gas circuit interface are both provided with a protruding structure.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: the outer tube, the middle tube and the inner tube are an integrated structure. When any part of the outer tube, the middle tube or the inner tube is damaged, the entire rectangular tube needs to be scrapped, and the cost of using the instrument is high. Therefore, it is necessary to improve the design of the related technologies. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a combined rectangular tube structure.

[0006] The above-mentioned technical objective of the utility model is achieved through the following technical solutions: a combined rectangular tube structure, including a base, a first socket is provided at one end of the base, a second socket connected to the first socket is provided at the other end of the base, an atomizer joint is plugged in the first socket, a center tube connector is plugged in the second socket, an end of the base away from the atomizer joint is detachably connected to a rectangular tube seat, an end of the rectangular tube seat close to the atomizer joint is provided with a third socket plugged in the center tube connector, a fourth socket connected to the third socket is provided in the rectangular tube seat, an end of the rectangular tube seat away from the atomizer joint is provided with a fifth socket connected to the fourth socket, an end of the center tube connector away from the atomizer joint is plugged in with a rectangular tube inner tube, a rectangular tube middle tube sleeved on the outside of the rectangular tube inner tube is plugged in the fourth socket, and a rectangular tube outer tube sleeved on the outside of the rectangular tube middle tube is plugged in the fifth socket.

[0007] By adopting the above technical scheme, the atomizer joint and the base, the center tube connector and the base, the center tube connector and the rectangular tube seat, the rectangular tube inner tube and the center tube connector, the rectangular tube middle tube and the rectangular tube seat, and the rectangular tube outer tube and the rectangular tube seat are all plug-in fitting relationships. When any one of the atomizer joint, the rectangular tube inner tube, the rectangular tube middle tube or the rectangular tube outer tube is damaged, it is easy to disassemble and replace them, which changes the defect of the traditional method that any rectangular tube needs to be scrapped as a whole when it is damaged, thereby saving the cost of using the instrument.

[0008] Furthermore, the atomizer joint, the central tube connector, the rectangular tube inner tube, the rectangular tube middle tube and the rectangular tube outer tube are coaxially arranged.

[0009] Furthermore, the rectangular tube seat is provided with a first gas path connecting pipe for tangentially introducing argon gas toward the inner wall of the outer tube of the rectangular tube and a second gas path connecting pipe for tangentially introducing argon gas toward the outer wall of the middle tube of the rectangular tube.

[0010] By adopting the above technical scheme, the argon gas introduced between the outer tube of the rectangular tube and the middle tube of the rectangular tube is used as the working gas to form plasma and cool the quartz torch tube (this part of the principle belongs to the existing technology and there is no need to elaborate on it here). By coaxially arranging the atomizer joint, the central tube connector, the inner tube of the rectangular tube, the middle tube of the rectangular tube and the outer tube of the rectangular tube, the high-temperature ICP can be effectively prevented from melting the quartz tube wall (the atomizer joint, the inner tube of the rectangular tube, the middle tube of the rectangular tube and the outer tube of the rectangular tube are all made of quartz glass tubes). The cooling (plasma) argon gas enters the ICP torch tube in a direction tangent to the inner wall of the outer tube of the rectangular tube and the outer wall of the middle tube of the rectangular tube, which solves the cooling problem of the quartz tube wall and ensures the stability of the ICP torch flame.

[0011] Furthermore, a first annular groove communicating with the inner wall of the first plug hole is provided in the base, a first sealing ring is provided in the first annular groove, and an outer wall of the first sealing ring is tightly pressed against the inner wall of the first annular groove and the outer wall of the atomizer joint;

[0012] The inner wall of the central tube connector is provided with a second annular groove, a second sealing ring is provided in the second annular groove, and the outer wall of the second sealing ring is tightly pressed against the inner wall of the second annular groove and the outer wall of the atomizer connector;

[0013] The inner wall of the central tube connector is provided with a third annular groove, the third annular groove is provided with a third sealing ring, and the outer wall of the third sealing ring is tightly pressed against the inner wall of the third annular groove and the outer wall of the inner tube of the rectangular tube;

[0014] The rectangular tube seat is provided with a fourth annular groove connected to the inner wall of the fourth plug hole and a fifth annular groove connected to the inner wall of the fifth plug hole. There are two of the fourth annular groove and the fifth annular groove. A fourth sealing ring and a fifth sealing ring are respectively provided in the fourth annular groove and the fifth annular groove. The outer wall of the fourth sealing ring is tightly pressed against the inner wall of the fourth annular groove and the outer wall of the middle tube of the rectangular tube, and the outer wall of the fifth sealing ring is tightly pressed against the inner wall of the fifth annular groove and the outer wall of the outer tube of the rectangular tube.

[0015] By adopting the above technical scheme, the setting of the first sealing ring ensures the sealing between the base and the atomizer joint, the setting of the second sealing ring ensures the sealing between the atomizer joint and the center tube connector, the setting of the third sealing ring ensures the sealing between the inner tube of the rectangular tube and the center tube connector, the setting of the fourth sealing ring ensures the sealing between the middle tube of the rectangular tube and the rectangular tube seat, and the setting of the fifth sealing ring ensures the sealing between the outer tube of the rectangular tube and the rectangular tube seat.

[0016] Furthermore, a fastening screw is provided through the base bracket and is clearance-matched with the base bracket, and the fastening screw is threadedly connected to the rectangular tube seat.

[0017] By adopting the above technical solution and setting the fastening screws, it is convenient for the rectangular tube seat and the bottom bracket to be detachably connected so as to install the central tube connector.

[0018] Furthermore, an annular receiving groove is arranged at one end of the rectangular tube seat close to the atomizer joint, an annular sealing ring is arranged in the annular receiving groove, and the outer wall of the annular sealing ring is respectively pressed against the inner wall of the annular receiving groove and the side wall of the bottom bracket.

[0019] By adopting the above technical solution, the provision of the annular sealing ring ensures the sealing between the rectangular tube seat and the base.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. This application changes the defect in the traditional method that if any one of the rectangular tubes is damaged, the entire tube needs to be scrapped, thus saving the cost of using the instrument;

[0022] 2. In the present application, the argon gas introduced between the outer tube and the middle tube of the rectangular tube is used as the working gas to form plasma and cool the quartz torch tube (this part of the principle belongs to the prior art and there is no need to elaborate on it here). By coaxially arranging the atomizer joint, the central tube connector, the inner tube of the rectangular tube, the middle tube of the rectangular tube and the outer tube of the rectangular tube, the high-temperature ICP can be effectively prevented from melting the quartz tube wall (the atomizer joint, the inner tube of the rectangular tube, the middle tube of the rectangular tube and the outer tube of the rectangular tube are all made of quartz glass tubes). The cooling (plasma) argon gas enters the ICP torch tube in a direction tangent to the inner wall of the outer tube of the rectangular tube and the outer wall of the middle tube of the rectangular tube, which solves the cooling problem of the quartz tube wall and ensures the stability of the ICP torch flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Schematic diagram of the plane;

[0025] Figure 3 yes Figure 2 A partial exploded view of

[0026] Figure 4 This is a schematic diagram of the structure of the embodiment of the utility model for highlighting the base;

[0027] Figure 5 This is a schematic diagram of the structure of the embodiment of the utility model for highlighting the central tube connector;

[0028] Figure 6 It is a structural schematic diagram of an embodiment of the utility model for highlighting a rectangular tube seat.

[0029] In the figure: 1, base; 11, first plug hole; 12, second plug hole; 13, first annular groove; 131, first sealing ring; 2, atomizer joint; 3, center tube connector; 31, second annular groove; 311, second sealing ring; 32, third annular groove; 321, third sealing ring; 4, rectangular tube seat; 41, third plug hole; 42, fourth plug hole; 43, fifth plug hole; 44, first gas line pipe; 45, second gas line pipe; 46, fourth annular groove; 461, fourth sealing ring; 47, fifth annular groove; 471, fifth sealing ring; 48, annular receiving groove; 481, annular sealing ring; 5, rectangular tube inner tube; 6, rectangular tube middle tube; 7, rectangular tube outer tube; 8, fastening screws. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0031] like Figure 1-6As shown, the embodiment of the present application discloses a combined rectangular tube structure, including a base 1, a first plug hole 11 is provided at one end of the base 1, a second plug hole 12 connected to the first plug hole 11 is provided at the other end of the base 1, an atomizer connector 2 is plugged into the first plug hole 11, a center tube connector 3 is plugged into the second plug hole 12, an end of the base 1 away from the atomizer connector 2 is detachably connected to a rectangular tube seat 4, and an end of the rectangular tube seat 4 close to the atomizer connector 2 is provided with a central tube connector 3 A third plug-in socket 41 is provided in the rectangular tube seat 4 with a fourth plug-in socket 42 connected to the third plug-in socket 41; a fifth plug-in socket 43 connected to the fourth plug-in socket 42 is provided at one end of the rectangular tube seat 4 away from the atomizer joint 2; a rectangular tube inner tube 5 is plug-in-fitted at one end of the center tube connector 3 away from the atomizer joint 2; a rectangular tube middle tube 6 sleeved on the outside of the rectangular tube inner tube 5 is plug-fitted in the fourth plug-in socket 42; a rectangular tube outer tube 7 sleeved on the outside of the rectangular tube middle tube 6 is plug-fitted in the fifth plug-in socket 43.

[0032] The atomizer joint 2 and the base 1, the center tube connector 3 and the base 1, the center tube connector 3 and the rectangular tube seat 4, the rectangular tube inner tube 5 and the center tube connector 3, the rectangular tube middle tube 6 and the rectangular tube seat 4, and the rectangular tube outer tube 7 and the rectangular tube seat 4 are all plug-fitted. When any one of the atomizer joint 2, the rectangular tube inner tube 5, the rectangular tube middle tube 6 or the rectangular tube outer tube 7 is damaged, it is easy to disassemble and replace, which changes the defect of the traditional method that any rectangular tube needs to be scrapped as a whole when it is damaged, saving the cost of using the instrument.

[0033] The atomizer joint 2, the center tube connector 3, the rectangular tube inner tube 5, the rectangular tube middle tube 6 and the rectangular tube outer tube 7 are coaxially arranged. The rectangular tube seat 4 is provided with a first gas path pipe 44 for tangentially introducing argon gas toward the inner wall of the rectangular tube outer tube 7 and a second gas path pipe 45 for tangentially introducing argon gas toward the outer wall of the rectangular tube middle tube 6 (the arrangement and use of the first gas path pipe 44 and the second gas path pipe 45 belong to the prior art in the rectangular tube field, and will not be described in detail here).

[0034] The argon gas introduced between the rectangular tube outer tube 7 and the rectangular tube middle tube 6 is used as a working gas to form plasma and cool the quartz torch tube (this part of the principle belongs to the prior art and does not need to be introduced in detail here). By coaxially arranging the atomizer joint 2, the central tube connector 3, the rectangular tube inner tube 5, the rectangular tube middle tube 6 and the rectangular tube outer tube 7, the high-temperature ICP can be effectively prevented from melting the quartz tube wall (the atomizer joint 2, the rectangular tube inner tube 5, the rectangular tube middle tube 6 and the rectangular tube outer tube 7 are all made of quartz glass tubes). The cooling (plasma) argon gas enters the ICP torch tube in a direction tangent to the inner wall of the rectangular tube outer tube 7 and the outer wall of the rectangular tube middle tube 6, which solves the cooling problem of the quartz tube wall and ensures the stability of the ICP torch flame.

[0035] The base 1 is provided with a first annular groove 13 connected to the inner wall of the first plug hole 11, and a first sealing ring 131 is provided in the first annular groove 13, and the outer wall of the first sealing ring 131 is tightly pressed against the inner wall of the first annular groove 13 and the outer wall of the atomizer joint 2; the inner wall of the central tube connector 3 is provided with a second annular groove 31, and a second sealing ring 311 is provided in the second annular groove 31, and the outer wall of the second sealing ring 311 is tightly pressed against the inner wall of the second annular groove 31 and the outer wall of the atomizer joint 2; the inner wall of the central tube connector 3 is provided with a third annular groove 32, and the third annular groove 32 is provided with a third sealing ring 321, and the third sealing ring The outer wall of 321 is tightly against the inner wall of the third annular groove 32 and the outer wall of the inner tube 5 of the rectangular tube; a fourth annular groove 46 connected to the inner wall of the fourth plug hole 42 and a fifth annular groove 47 connected to the inner wall of the fifth plug hole 43 are provided in the rectangular tube seat 4, and two fourth annular grooves 46 and two fifth annular grooves 47 are provided. A fourth sealing ring 461 and a fifth sealing ring 471 are respectively provided in the fourth annular groove 46 and the fifth annular groove 47, and the outer wall of the fourth sealing ring 461 is tightly against the inner wall of the fourth annular groove and the outer wall of the middle tube 6 of the rectangular tube, and the outer wall of the fifth sealing ring 471 is tightly against the inner wall of the fifth annular groove 47 and the outer wall of the outer tube 7 of the rectangular tube.

[0036] The setting of the first sealing ring 131 ensures the sealing between the base 1 and the atomizer joint 2, the setting of the second sealing ring 311 ensures the sealing between the atomizer joint 2 and the center tube connector 3, the setting of the third sealing ring 321 ensures the sealing between the inner tube 5 of the rectangular tube and the center tube connector 3, the setting of the fourth sealing ring 461 ensures the sealing between the middle tube 6 of the rectangular tube and the rectangular tube seat 4, and the setting of the fifth sealing ring 471 ensures the sealing between the outer tube 7 of the rectangular tube and the rectangular tube seat 4.

[0037] The bottom bracket 1 is provided with a fastening screw 8 which is loosely matched with the bottom bracket 1, and the fastening screw 8 is threadedly connected with the rectangular tube seat 4. The provision of the fastening screw 8 facilitates the detachable connection between the rectangular tube seat 4 and the bottom bracket 1, so as to install the central tube connector 3.

[0038] To ensure the sealing between the rectangular tube seat 4 and the base 1, an annular receiving groove 48 is provided at one end of the rectangular tube seat 4 close to the atomizer joint 2, and an annular sealing ring 481 is provided in the annular receiving groove 48. The outer wall of the annular sealing ring 481 is respectively pressed against the inner wall of the annular receiving groove 48 and the side wall of the base 1.

[0039] The use principle of a combined rectangular tube structure in the present embodiment is: the atomizer joint 2 and the base 1, the center tube connector 3 and the base 1, the center tube connector 3 and the rectangular tube seat 4, the rectangular tube inner tube 5 and the center tube connector 3, the rectangular tube middle tube 6 and the rectangular tube seat 4, and the rectangular tube outer tube 7 and the rectangular tube seat 4 are all plug-in fitting relationships. When any one of the atomizer joint 2, the rectangular tube inner tube 5, the rectangular tube middle tube 6 or the rectangular tube outer tube 7 is damaged, it is easy to disassemble and replace, which changes the defect of the traditional method that any rectangular tube needs to be scrapped as a whole when it is damaged, saving the cost of using the instrument.

[0040] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A combined rectangular tube structure, characterized in that: The invention comprises a base (1), wherein one end of the base (1) is provided with a first plug hole (11), and the other end of the base (1) is provided with a second plug hole (12) connected to the first plug hole (11); an atomizer connector (2) is plugged into the first plug hole (11), and a center tube connector (3) is plugged into the second plug hole (12); an end of the base (1) away from the atomizer connector (2) is detachably connected to a rectangular tube seat (4); an end of the rectangular tube seat (4) close to the atomizer connector (2) is provided with a third plug hole (42) plugged into and matched with the center tube connector (3); 1), a fourth plug hole (42) connected to the third plug hole (41) is provided in the rectangular tube seat (4), a fifth plug hole (43) connected to the fourth plug hole (42) is provided at one end of the rectangular tube seat (4) away from the atomizer joint (2), a rectangular tube inner tube (5) is plugged in and matched with the end of the central tube connector (3) away from the atomizer joint (2), a rectangular tube middle tube (6) sleeved on the outside of the rectangular tube inner tube (5) is plugged in and matched with the fourth plug hole (42), and a rectangular tube outer tube (7) sleeved on the outside of the rectangular tube middle tube (6) is plugged in and matched with the fifth plug hole (43).

2. The combined rectangular tube structure according to claim 1, characterized in that: The atomizer joint (2), the central tube connector (3), the rectangular tube inner tube (5), the rectangular tube middle tube (6) and the rectangular tube outer tube (7) are coaxially arranged.

3. The combined rectangular tube structure according to claim 2, characterized in that: The rectangular tube seat (4) is provided with a first gas path pipe (44) for tangentially introducing argon gas toward the inner wall of the rectangular tube outer tube (7) and a second gas path pipe (45) for tangentially introducing argon gas toward the outer wall of the rectangular tube middle tube (6).

4. The combined rectangular tube structure according to claim 2, characterized in that: The base (1) is provided with a first annular groove (13) in communication with the inner wall of the first insertion hole (11); a first sealing ring (131) is provided in the first annular groove (13); the outer wall of the first sealing ring (131) is tightly abutted against the inner wall of the first annular groove (13) and the outer wall of the atomizer joint (2); The inner wall of the central tube connector (3) is provided with a second annular groove (31), a second sealing ring (311) is provided in the second annular groove (31), and the outer wall of the second sealing ring (311) is tightly abutted against the inner wall of the second annular groove (31) and the outer wall of the atomizer connector (2); The inner wall of the central tube connector (3) is provided with a third annular groove (32), the third annular groove (32) is provided with a third sealing ring (321), and the outer wall of the third sealing ring (321) is tightly pressed against the inner wall of the third annular groove (32) and the outer wall of the rectangular tube inner tube (5); The rectangular tube seat (4) is provided with a fourth annular groove (46) connected to the inner wall of the fourth plug hole (42) and a fifth annular groove (47) connected to the inner wall of the fifth plug hole (43). The fourth annular groove (46) and the fifth annular groove (47) are each provided with two. A fourth sealing ring (461) and a fifth sealing ring (471) are respectively provided in the fourth annular groove (46) and the fifth annular groove (47). The outer wall of the fourth sealing ring (461) is tightly abutted against the inner wall of the fourth annular groove and the outer wall of the rectangular tube middle tube (6), and the outer wall of the fifth sealing ring (471) is tightly abutted against the inner wall of the fifth annular groove (47) and the outer wall of the rectangular tube outer tube (7).

5. The combined rectangular tube structure according to claim 4 is characterized in that: A fastening screw (8) is provided through the base bracket (1) and is loosely matched with the base bracket (1). The fastening screw (8) is threadedly connected to the rectangular tube seat (4).

6. The combined rectangular tube structure according to claim 5, characterized in that: An annular receiving groove (48) is provided at one end of the rectangular tube seat (4) close to the atomizer joint (2), an annular sealing ring (481) is provided in the annular receiving groove (48), and the outer wall of the annular sealing ring (481) is respectively pressed against the inner wall of the annular receiving groove (48) and the side wall of the base (1).

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