Detachable torch pipe structure

Abstract

The utility model discloses a detachable torch tube structure which enables any quartz tube to be replaced quickly after being damaged. The device comprises a central fixing seat, the central fixing seat comprises a base and an upward convex positioning table, the upward convex positioning table comprises a central cylindrical table and an upward convex frustum, and a first through central hole is formed in the center of the central fixing seat in the thickness direction; the torch tube connecting seat comprises a bottom positioning seat and a cylindrical sleeve, a profiling positioning cavity is formed in the center of the bottom of the torch tube connecting seat, and two groups of conduction cavities, namely a first conduction cavity and a second conduction cavity, are formed in the cylindrical sleeve; a small-diameter pipe cavity, a medium-diameter pipe cavity, a large-diameter first pipe cavity and a large-diameter second pipe cavity are sequentially arranged on the inner wall of the cylindrical sleeve corresponding to the upper part of the profiling positioning cavity; the torch tube fixing seat comprises a cylinder body, and two groups of through positioning holes, namely a first through positioning hole and a second through positioning hole, are formed in the outer circumference of the cylinder body; the torch tube assembly comprises a central tube, a middle-layer quartz tube and an outer-layer quartz tube; and a connecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of torch tube structures, in particular to a detachable torch tube structure. Background Art

[0002] The ICP torch consists of three concentric quartz tubes, each with three corresponding gas inlets, each receiving three gas streams: cooling gas, auxiliary gas, and carrier gas. Cooling gas, also known as plasma gas. Carrier gas, also known as sample gas or nebulizing gas, atomizes the test solution and delivers the aerosol to the ICP light source. An ideal ICP torch should be easy to ignite, conserve working gas, and provide a stable flame. However, the existing torch assembly structure makes it difficult to disassemble the torch after installation. Consequently, if any of the quartz tubes are damaged, the entire torch must be replaced. Therefore, a torch structure that allows for the rapid replacement of any quartz tube is urgently needed. Utility Model Content

[0003] In view of the above problems, the present invention provides a detachable torch tube structure, which enables any quartz tube to be quickly replaced after being damaged, thereby saving costs.

[0004] A detachable torch structure, characterized in that it comprises:

[0005] A central fixing seat, comprising a base and an upper convex positioning platform, wherein the upper convex positioning platform comprises a central cylindrical platform and an upper convex frustum, and a first central hole is provided at the center of the thickness direction of the central fixing seat;

[0006] The torch tube connector includes a bottom positioning seat and a cylindrical sleeve. The bottom center of the torch tube connector is provided with a contoured positioning cavity. The cylindrical sleeve is provided with two groups of conducting cavities, namely a first conducting cavity and a second conducting cavity. The inner wall of the cylindrical sleeve is provided with a small-diameter lumen, a medium-diameter lumen, a large-diameter first lumen, and a large-diameter second lumen in sequence corresponding to the upper part of the contoured positioning cavity.

[0007] The torch tube fixing seat comprises a cylinder, wherein the outer circumference of the cylinder is provided with two groups of through positioning holes, namely a first through positioning hole and a second through positioning hole;

[0008] A torch assembly comprising a central tube, an intermediate quartz tube, and an outer quartz tube;

[0009] and connecting pipes;

[0010] The upper convex positioning platform of the central fixing seat is inserted into the contoured positioning cavity of the torch tube connecting seat, the outer periphery of the torch tube connecting seat is sleeved with the torch tube fixing seat, the bottom positioning seat is arranged closely to the bottom of the cylinder, and the base is arranged closely to the bottom of the bottom positioning seat;

[0011] The bottom of the central tube is fixedly inserted into the upper area of ​​the first central hole, and the lower part of the first central hole is inserted with the downwardly convex connecting tube;

[0012] The bottom of the middle layer quartz tube is in close contact with the first stop boss between the small diameter tube cavity and the medium diameter tube cavity, and the outer circumference of the bottom of the middle layer quartz tube is in close contact with the inner wall of the medium diameter tube cavity;

[0013] The bottom of the outer quartz tube is in close contact with the second stop boss between the large-diameter first tube cavity and the large-diameter second tube cavity, and the outer circumference of the bottom of the outer quartz tube is in close contact with the inner wall of the large-diameter second tube cavity;

[0014] The first through positioning hole is connected to the first conducting cavity inside, the first conducting cavity is connected to the small-diameter tube cavity inside, the second through positioning hole is connected to the second conducting cavity inside, and the second conducting cavity is connected to the large-diameter first tube cavity inside.

[0015] It is further characterized by:

[0016] The torch tube fixing seat also includes a connecting flange, and an ignition connecting piece is fixedly connected to the connecting flange;

[0017] The cylindrical sleeve of the torch tube connector is externally provided with a cylindrical pin, and the inner wall of the cylindrical body of the torch tube fixing seat is provided with a linear guide groove and a transverse locking groove. The cylindrical pin of the torch tube connector rises from bottom to top along the linear guide groove and then rotates so that the outer end of the cylindrical pin is located in the transverse locking groove, so that the connection between the torch tube connector and the torch tube fixing seat is stable and reliable, and easy to assemble and disassemble;

[0018] The outer ends of the first through positioning hole and the second through positioning hole are respectively connected to gas path connectors;

[0019] At least two sets of first sealing rings are provided on the outer circumference of the bottom of the intermediate layer quartz tube, which is in close contact with the inner wall of the medium diameter tube cavity, to ensure the sealing of the gas path;

[0020] At least two sets of second sealing rings are provided on the outer circumference of the bottom of the outer quartz tube, which is in close contact with the inner wall of the second large-diameter tube cavity, to ensure that the air path is sealed.

[0021] After adopting the above technical solution, the central tube is fixedly inserted in the upper area of ​​the first central hole, and the outer circumference of the bottom of the middle layer quartz tube is in close contact with the inner wall of the medium-diameter tube cavity; the outer circumference of the bottom of the outer layer quartz tube is in close contact with the inner wall of the large-diameter second tube cavity. By disassembling and assembling the central fixing seat, the torch tube connecting seat, and the torch tube fixing seat, the corresponding tube can be replaced, which allows any quartz tube to be quickly replaced after being damaged, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 It is a three-dimensional exploded view of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the main view of the present invention;

[0025] Figure 4 A three-dimensional diagram of the torch fixing base of the present invention;

[0026] The names corresponding to the serial numbers in the figure are as follows:

[0027] Center fixing seat 10, base 11, upper convex positioning platform 12, center cylindrical platform 13, upper convex frustum 14, first center hole 15, torch tube connecting seat 20, bottom positioning seat 21, cylindrical sleeve 22, small diameter tube cavity 221, medium diameter tube cavity 222, large diameter first tube cavity 223, large diameter second tube cavity 224, first stop boss 225, second stop boss 226, contoured positioning cavity 23, first conduction cavity 24, second conduction cavity 25, torch tube fixing seat 30, cylinder 31, first through positioning hole 32, second through positioning hole 33, connecting flange 34, linear guide groove 35, transverse locking groove 36, torch tube assembly 40, center tube 41, intermediate layer quartz tube 42, outer layer quartz tube 43, first sealing ring 44, second sealing ring 45, connecting pipe 50, third sealing ring 60, ignition connecting piece 70, cylindrical pin 80, gas path joint 90. DETAILED DESCRIPTION

[0028] A detachable torch structure, see Figure 1-Figure 4 , which includes a central fixing seat 10, a torch connecting seat 20, a torch fixing seat 30, a torch assembly 40, and a connecting pipe 50;

[0029] The center fixing seat 10 includes a base 11 and an upper convex positioning platform 12. The upper convex positioning platform 12 includes a central cylindrical platform 13 and an upper convex frustum 14. A first center hole 15 is provided through the center of the thickness direction of the center fixing seat 10.

[0030] The torch connection base 20 includes a bottom positioning base 21 and a cylindrical sleeve 22. The bottom of the torch connection base 20 is provided with a contoured positioning cavity 23. The cylindrical sleeve 22 is provided with two sets of conducting cavities, namely a first conducting cavity 24 and a second conducting cavity 25. The inner wall of the cylindrical sleeve 22 is provided with a small-diameter lumen 221, a medium-diameter lumen 222, a large-diameter first lumen 223, and a large-diameter second lumen 224 in sequence corresponding to the upper part of the contoured positioning cavity 23.

[0031] The torch holder 30 includes a barrel 31 , and the outer circumference of the barrel 31 is provided with two groups of through positioning holes, namely a first through positioning hole 32 and a second through positioning hole 33 ;

[0032] The torch assembly 40 includes a central tube 41, an intermediate quartz tube 42, and an outer quartz tube 43;

[0033] The upper convex positioning platform 12 of the central fixing seat 10 is inserted into the contoured positioning cavity 23 of the torch tube connecting seat 20. The outer periphery of the torch tube connecting seat 20 is sheathed with the torch tube fixing seat 30. The bottom positioning seat 21 is arranged closely to the bottom of the cylinder 31. The base 11 is arranged closely to the bottom of the bottom positioning seat 21. A third sealing ring 60 is arranged between the base 11 and the bottom positioning seat 21.

[0034] The bottom of the central tube 41 is fixedly inserted into the upper area of ​​the first central hole 15, and a downwardly protruding connecting tube 50 is inserted into the lower part of the first central hole 15;

[0035] The bottom of the middle quartz tube 42 is in close contact with the first stop boss 225 between the small-diameter tube cavity 221 and the medium-diameter tube cavity 222 , and the outer circumference of the bottom of the middle quartz tube 42 is in close contact with the inner wall of the medium-diameter tube cavity 222 .

[0036] The bottom of the outer quartz tube 43 is in close contact with the second stop boss 226 between the large-diameter first tube cavity 223 and the large-diameter second tube cavity 224 , and the outer circumference of the bottom of the outer quartz tube 43 is in close contact with the inner wall of the large-diameter second tube cavity 224 ;

[0037] The first through positioning hole 32 is connected to the first conducting cavity 24 inside, the first conducting cavity 24 is connected to the small diameter tube cavity 221 inside, the second through positioning hole 33 is connected to the second conducting cavity 25 inside, and the second conducting cavity 25 is connected to the large diameter first tube cavity 223 inside.

[0038] In a specific implementation, the torch tube fixing base 30 further includes a connecting flange 34, and an ignition connecting piece 70 is fixedly connected to the connecting flange 34;

[0039] The cylindrical sleeve 22 of the torch connector 20 is provided with a cylindrical pin 80, and the inner wall of the barrel 31 of the torch holder 30 is provided with a linear guide groove 35 and a transverse locking groove 36. The cylindrical pin 80 of the torch connector 20 rises from bottom to top along the linear guide groove 35 to a position where it is rotated, so that the outer end of the cylindrical pin 80 is located in the transverse locking groove 36, so that the connection between the torch connector 20 and the torch holder 30 is stable and reliable, and easy to assemble and disassemble;

[0040] The outer ends of the first through positioning hole 32 and the second through positioning hole 33 are respectively connected to the gas circuit connector 90;

[0041] At least two sets of first sealing rings 44 are provided on the outer circumference of the bottom of the middle layer quartz tube 42, which is in close contact with the inner wall of the medium diameter tube cavity 222, to ensure the sealing of the gas path;

[0042] At least two sets of second sealing rings 45 are provided on the outer circumference of the bottom of the outer quartz tube 43 , which is in close contact with the inner wall of the large-diameter second tube cavity 224 , to ensure that the gas path is sealed.

[0043] In specific implementation, the outer periphery of the base 11 of the central fixing seat 10 is provided with a gripping handle to ensure reliable and convenient assembly and disassembly.

[0044] Its working principle is as follows: the central tube is fixedly inserted into the upper area of ​​the first central hole, and the outer circumference of the bottom of the middle layer quartz tube is tightly attached to the inner wall of the medium-diameter tube cavity; the outer circumference of the bottom of the outer layer quartz tube is tightly attached to the inner wall of the large-diameter second tube cavity. After assembly, the operation is completed by introducing corresponding gases into the connecting pipes and two sets of gas connectors. If any quartz tube is damaged, the corresponding tube can be replaced by disassembling and assembling the central fixing seat, torch tube connecting seat, and torch tube fixing seat.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0046] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A detachable torch structure, characterized in that: It includes: A central fixing seat, comprising a base and an upper convex positioning platform, wherein the upper convex positioning platform comprises a central cylindrical platform and an upper convex frustum, and a first central hole is provided at the center of the thickness direction of the central fixing seat; The torch tube connector includes a bottom positioning seat and a cylindrical sleeve. The bottom center of the torch tube connector is provided with a contoured positioning cavity. The cylindrical sleeve is provided with two groups of conducting cavities, namely a first conducting cavity and a second conducting cavity. The inner wall of the cylindrical sleeve is provided with a small-diameter lumen, a medium-diameter lumen, a large-diameter first lumen, and a large-diameter second lumen in sequence corresponding to the upper part of the contoured positioning cavity. The torch tube fixing seat comprises a cylinder, wherein the outer circumference of the cylinder is provided with two groups of through positioning holes, namely a first through positioning hole and a second through positioning hole; A torch assembly comprising a central tube, an intermediate quartz tube, and an outer quartz tube; and connecting pipes; The upper convex positioning platform of the central fixing seat is inserted into the contoured positioning cavity of the torch tube connecting seat, the outer periphery of the torch tube connecting seat is sleeved with the torch tube fixing seat, the bottom positioning seat is arranged closely to the bottom of the cylinder, and the base is arranged closely to the bottom of the bottom positioning seat; The bottom of the central tube is fixedly inserted into the upper area of ​​the first central hole, and the lower part of the first central hole is inserted with the downwardly convex connecting tube; The bottom of the middle layer quartz tube is in close contact with the first stop boss between the small diameter tube cavity and the medium diameter tube cavity, and the outer circumference of the bottom of the middle layer quartz tube is in close contact with the inner wall of the medium diameter tube cavity; The bottom of the outer quartz tube is in close contact with the second stop boss between the large-diameter first tube cavity and the large-diameter second tube cavity, and the outer circumference of the bottom of the outer quartz tube is in close contact with the inner wall of the large-diameter second tube cavity; The first through positioning hole is connected to the first conducting cavity inside, the first conducting cavity is connected to the small-diameter tube cavity inside, the second through positioning hole is connected to the second conducting cavity inside, and the second conducting cavity is connected to the large-diameter first tube cavity inside.

2. The detachable torch structure according to claim 1, characterized in that: The torch tube fixing seat also includes a connecting flange, and an ignition connecting piece is fixedly connected to the connecting flange.

3. The detachable torch structure according to claim 1, characterized in that: The cylindrical sleeve of the torch tube connecting seat is externally provided with a cylindrical pin, and the inner wall of the cylinder of the torch tube fixing seat is provided with a linear guide groove and a transverse locking groove. The cylindrical pin of the torch tube connecting seat rises from bottom to top along the linear guide groove and then rotates so that the outer end of the cylindrical pin is located in the transverse locking groove.

4. The detachable torch structure according to claim 1, wherein: The outer ends of the first through positioning hole and the second through positioning hole are respectively connected to air path connectors.

5. The detachable torch structure according to claim 1, characterized in that: At least two groups of first sealing rings are provided on the outer circumference of the bottom of the intermediate layer quartz tube, which is in close contact with the inner wall of the medium-diameter tube cavity.

6. The detachable torch structure according to claim 1, characterized in that: At least two groups of second sealing rings are provided on the outer circumference of the bottom of the outer quartz tube, which is in close contact with the inner wall of the second large-diameter tube cavity.

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