Assembly tolerance detection device for plasma torch

Abstract

The utility model discloses an assembly tolerance detection device for a plasma torch, which comprises a lower electrode positioning tool, an upper electrode positioning tool and a lower electrode positioning tool, the first limiting part is arranged on the main body; the first mounting hole penetrates through the first limiting part; and the second mounting hole penetrates through the main body and is communicated with the first mounting hole. The upper electrode positioning tool comprises a second limiting part which is arranged on the first limiting part; and the third mounting hole penetrates through the second limiting part and is communicated with the first mounting hole. The bottom end of the upper electrode assembly body penetrates through the third mounting hole and extends into the first mounting hole, and the shoulder of the upper electrode assembly body abuts against the second limiting part; the arc striking tube is fixed in the second mounting hole, and the top end of the arc striking tube is flush with the top end of the main body; the sections of the second limiting part and the first limiting part are semicircular; and the measuring scale is used for measuring the distance between the bottom end of the exposed upper electrode assembly body and the top end of the arc striking tube so as to reassemble the upper electrode assembly body when the distance does not meet a preset tolerance.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an assembly tolerance detection device for a plasma torch. Background Art

[0002] In the waste gas treatment device, a plasma torch (TORCH) is usually used for ignition to utilize the ultra-high temperature of the plasma flame to provide thermal energy for the waste gas to be treated, thereby converting the organic matter or halides in the waste gas into inorganic small molecules such as carbon dioxide and water, thereby achieving the treatment of the waste gas.

[0003] The upper electrode assembly and the arc-starting tube are the core components of the plasma torch. In actual use, the spacing between the upper electrode assembly and the arc-starting tube should be between 1.37mm and 1.71mm, with a reference of 1.5mm and a tolerance of -0.13mm to 0.21mm. If the tolerance is exceeded, the plasma torch will fail to ignite or the performance will not meet the standard. However, the assembled plasma torch cannot be measured because the spacing is inside the body. Moreover, after the ignition fails, due to the burning of the high-temperature arc, the spacing measurement is of no reference value. Utility Model Content

[0004] The utility model aims to provide an assembly tolerance detection device for a plasma torch, which can detect in advance whether the spacing between the bottom end of the upper electrode assembly and the top end of the arc-starting tube meets the requirements, thereby avoiding the occurrence of a large number of unqualified plasma torch products.

[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0006] A plasma torch assembly tolerance detection device, the plasma torch comprising an arc-starting tube and an upper electrode assembly; the assembly tolerance detection device comprising: a lower electrode positioning tool, an upper electrode positioning tool and a measuring ruler;

[0007] The lower electrode positioning tool comprises: a main body; a first limiting portion, which is arranged on the main body; a first mounting hole, which passes through the first limiting portion; and a second mounting hole, which passes through the main body and is connected to the first mounting hole;

[0008] The upper electrode positioning tool comprises: a second limiting portion, which is arranged on the first limiting portion; a third mounting hole, which passes through the second limiting portion and is connected to the first mounting hole;

[0009] The bottom end of the upper electrode assembly passes through the third mounting hole and extends into the first mounting hole, and the shoulder of the upper electrode assembly abuts against the second limiting portion; the arc-starting tube is fixed in the second mounting hole, and the top end of the arc-starting tube is flush with the top end of the main body; the cross-sections of the second limiting portion and the first limiting portion are both semi-circular, so that the bottom end of the upper electrode assembly and the top end of the arc-starting tube are exposed;

[0010] The measuring ruler is used to measure the distance between the exposed bottom end of the upper electrode assembly and the top end of the arc-starting tube, so as to reassemble the upper electrode assembly when the distance does not meet the preset tolerance.

[0011] Optionally, the second limiting portion and the first limiting portion are fixedly connected by a fastener.

[0012] Optionally, the upper electrode positioning tool further includes: an extension portion extending downward along an inner edge of the second limiting portion; the extension portion is located in the first mounting hole, and the third mounting hole passes through the extension portion.

[0013] Optionally, the arc-starting tube and the second mounting hole are fixedly connected by threads.

[0014] Optionally, a limiting surface is provided in the second mounting hole; and the shoulder of the arc-striking tube abuts against the limiting surface to limit the arc-striking tube.

[0015] Optionally, a sealing ring is provided between the shoulder of the arc-starting tube and the limiting surface.

[0016] Optionally, the main body and the first limiting portion are integrally arranged.

[0017] Optionally, a base is provided at one end of the main body away from the first limiting portion.

[0018] Optionally, the main body and the base are integrally arranged.

[0019] Optionally, the measuring ruler is a vernier caliper.

[0020] Compared with the prior art, the utility model has at least one of the following advantages:

[0021] The utility model provides an assembly tolerance detection device for a plasma torch, wherein the bottom end of an upper electrode assembly passes through a third mounting hole of an upper electrode positioning tool and extends to a first mounting hole of a lower electrode positioning tool; an arc-starting tube is fixed in a second mounting hole of the lower electrode positioning tool, and the top end of the arc-starting tube is flush with the top end of a main body. The cross-sections of the second limiting portion in the upper electrode positioning tool and the first limiting portion in the lower electrode positioning tool are both semi-circular, that is, the second limiting portion and the first limiting portion are both in a cutaway state, so that the bottom end of the upper electrode assembly and the top end of the arc-starting tube are exposed, so that the bottom end of the upper electrode assembly and the top end of the arc-starting tube can be observed, and then it can be checked in advance whether the spacing between the bottom end of the upper electrode assembly and the top end of the arc-starting tube meets the requirements, so that when the spacing does not meet the requirements, the accessories in the upper electrode assembly can be replaced to reassemble the upper electrode assembly, so that the spacing between the bottom end of the reassembled upper electrode assembly and the top end of the arc-starting tube meets the requirements, thereby avoiding the occurrence of a large number of unqualified plasma torch products and effectively reducing the production cost.

[0022] In the utility model, a limiting surface is arranged in the second mounting hole, and the shoulder of the arc-starting tube abuts against the limiting surface to limit the arc-starting tube, thereby facilitating the control of the top end of the arc-starting tube to be flush with the top end of the main body.

[0023] In the utility model, a base is provided at one end of the main body away from the first limiting portion to improve the stability of the main body, thereby improving the stability of the assembly tolerance detection device, and further preventing the assembly tolerance detection device from shaking when measuring the spacing, so as to ensure the measurement accuracy of the spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of an assembly tolerance detection device for a plasma torch provided by an embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional view of an assembly tolerance detection device for a plasma torch provided in one embodiment of the utility model. DETAILED DESCRIPTION

[0026] The following is a further detailed description of an assembly tolerance detection device for a plasma torch proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Combined with Figures 1-2As shown, this embodiment provides an assembly tolerance detection device for a plasma torch, wherein the plasma torch includes an upper electrode assembly 120 and an arc-starting tube 110; wherein the upper electrode assembly 120 belongs to the cathode of the plasma torch, is used to emit an arc, and the arc passes through the inside of the arc-starting tube 110. The assembly tolerance detection device includes: a lower electrode positioning fixture 210, an upper electrode positioning fixture 220 and a measuring ruler (not shown in the figure). The lower electrode positioning fixture 210 is used to carry the upper electrode positioning fixture 220 and to fix and install the arc-starting tube 110. Further, the lower electrode positioning fixture 210 includes: a main body 2110; a first limiting portion 2120, which is arranged on the main body 2110; a first mounting hole 2130, which passes through the first limiting portion 2120; and a second mounting hole 2140, which passes through the main body 2110 and is connected to the first mounting hole 2130. Optionally, the main body 2110 and the first limiting portion 2120 are integrally provided to facilitate processing and ensure the stability of the connection between the main body 2110 and the first limiting portion 2120 .

[0029] The upper electrode positioning tool 220 is used to fix and install the upper electrode assembly 120. Further, the upper electrode positioning tool 220 includes: a second limiting portion 2210, which is arranged on the first limiting portion 2120; optionally, the second limiting portion 2210 and the first limiting portion 2120 are fixedly connected by a fastener. A third mounting hole 2230 passes through the second limiting portion 2210 and is connected to the first mounting hole 2130.

[0030] Specifically, the bottom end of the upper electrode assembly 120 (i.e., the end emitting the arc) passes through the third mounting hole 2230 and extends into the first mounting hole 2130, and the shoulder 1210 of the upper electrode assembly abuts against the second limiting portion 2210, so that the second limiting portion 2210 limits the upper electrode assembly 120. The arc-starting tube 110 is fixed in the second mounting hole 2140, and the top end of the arc-starting tube 110 is flush with the top end of the main body 2110. Optionally, the arc-starting tube 110 and the second mounting hole 2140 are fixedly connected by threads.

[0031] More specifically, the cross-sections of the second limiting portion 2210 and the first limiting portion 2120 are both semi-circular, that is, the second limiting portion 2210 and the first limiting portion 2120 are both in a cut-away state, so that the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110 are exposed, so that the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110 can be observed, and thus it is convenient to measure the distance between the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110.

[0032] Further, the measuring ruler is used to measure the distance between the bottom end of the exposed upper electrode assembly 120 and the top end of the arc-starting tube 110, so as to reassemble the upper electrode assembly 120 when the distance does not meet the preset tolerance. Optionally, the measuring ruler is a vernier caliper to ensure the measurement accuracy of the distance. Optionally, the preset tolerance is -0.13mm to 0.21mm, but the utility model is not limited thereto.

[0033] It should be noted that the installation status of the upper electrode assembly 120 and the arc-starting tube 110 in the assembly tolerance detection device is consistent with the installation status of the upper electrode assembly 120 and the arc-starting tube 110 in actual applications, that is, the distance between the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110 in the assembly tolerance detection device is consistent with the distance between the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110 in actual applications. Therefore, in this embodiment, by measuring the distance between the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110, it is possible to check in advance whether the distance meets the preset tolerance and related technical requirements, so that when the distance does not meet the preset tolerance, the accessories in the upper electrode assembly 120 can be replaced to reassemble the upper electrode assembly 120, so that the distance between the bottom end of the reassembled upper electrode assembly 120 and the top end of the arc-starting tube 110 meets the preset tolerance, thereby avoiding the occurrence of a large number of unqualified plasma torch products and effectively reducing production costs.

[0034] Please continue to refer to Figure 1 and Figure 2 The upper electrode positioning tool 220 also includes: an extension portion 2220 extending downward along the inner edge of the second limiting portion 2210 ; the extension portion 2220 is located in the first mounting hole 2130 , and the third mounting hole 2230 passes through the extension portion 2220 .

[0035] Specifically, the extension portion 2220 can limit the second limiting portion 2210, thereby preventing the second limiting portion 2210 from moving horizontally. The height of the extension portion 2220 is not greater than the height of the first mounting hole 2130, so as to prevent the extension portion 2220 from affecting the distance measurement between the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110. Optionally, the extension portion 2220 and the second limiting portion 2210 are integrated to facilitate processing and ensure the connection stability between the extension portion 2220 and the second limiting portion 2210, but the present invention is not limited thereto.

[0036] Please also refer to Figure 1 and Figure 2The second mounting hole 2140 is provided with a limiting surface 2141 (such as Figure 2 and the shoulder 1110 of the arc-starting tube abuts against the limiting surface 2141 to limit the arc-starting tube 110, so as to facilitate the control of the top of the arc-starting tube 110 to be flush with the top of the main body 2110. Optionally, a sealing ring 130 is provided between the shoulder 1110 of the arc-starting tube and the limiting surface 2141 to prevent the arc-starting tube 110 from being damaged, but the utility model is not limited thereto.

[0037] Please continue to refer to Figure 1 and Figure 2 , a base 2150 is provided at one end of the main body 2110 away from the first limiting portion 2120 (i.e., the bottom end of the main body) to improve the stability of the main body 2110, thereby improving the stability of the assembly tolerance detection device, thereby preventing the assembly tolerance detection device from shaking when measuring the spacing, so as to ensure the measurement accuracy of the spacing. Optionally, the main body 2110 and the base 2150 are integrated to facilitate processing and ensure the stability of the connection between the main body 2110 and the base 2150, but the present invention is not limited thereto.

[0038] Based on the same utility model concept, this embodiment also provides a method for using the assembly tolerance detection device as described above, comprising:

[0039] Step S1 , positioning and assembling the upper electrode assembly 120 and the upper electrode positioning tool 220 through the third mounting hole 2230 and the second limiting portion 2210 .

[0040] Step S2, positioning and assembling the arc-starting tube 110, the sealing ring 130 and the lower electrode positioning tool 210 through the second mounting hole 2140, and the top end of the arc-starting tube 110 is flush with the top end of the main body 2110 in the lower electrode positioning tool 210.

[0041] Step S3 , positioning and assembling the second limiting portion 2210 in the upper electrode positioning tool 220 and the first limiting portion 2120 in the lower electrode positioning tool 210 ; and extending the bottom end of the upper electrode assembly 120 into the first mounting hole 2130 .

[0042] Step S4, using the measuring ruler to measure whether the distance between the bottom end of the upper electrode assembly 120 and the top end of the arc-starting tube 110 meets the preset tolerance, and when the distance does not meet the preset tolerance, replacing the accessories in the upper electrode assembly 120 to reassemble the upper electrode assembly 120, so that the distance between the bottom end of the reassembled upper electrode assembly 120 and the top end of the arc-starting tube 110 meets the preset tolerance.

[0043] In summary, this embodiment provides an assembly tolerance detection device for a plasma torch, comprising: a lower electrode positioning tool, an upper electrode positioning tool, and a measuring ruler. The bottom end of the upper electrode assembly passes through the third mounting hole of the upper electrode positioning tool and extends to the first mounting hole of the lower electrode positioning tool; the arc-starting tube is fixed in the second mounting hole of the lower electrode positioning tool, and the top end of the arc-starting tube is flush with the top end of the body. The cross-sections of the second limiting part in the upper electrode positioning tooling and the first limiting part in the lower electrode positioning tooling are both semi-circular, that is, the second limiting part and the first limiting part are both in a cut-open state, so that the bottom end of the upper electrode assembly and the top end of the arc-starting tube are exposed, so that the bottom end of the upper electrode assembly and the top end of the arc-starting tube can be observed, and then it can be checked in advance whether the spacing between the bottom end of the upper electrode assembly and the top end of the arc-starting tube meets the requirements, so that when the spacing does not meet the requirements, the accessories in the upper electrode assembly can be replaced to reassemble the upper electrode assembly, so that the spacing between the bottom end of the reassembled upper electrode assembly and the top end of the arc-starting tube meets the requirements, thereby avoiding the occurrence of a large number of unqualified plasma torch products and effectively reducing the production cost. In addition, in this embodiment, a limiting surface is provided in the second mounting hole, and the shoulder of the arc-starting tube abuts against the limiting surface to limit the arc-starting tube, so as to facilitate the control of the top end of the arc-starting tube to be flush with the top end of the main body.

[0044] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A device for detecting assembly tolerance of a plasma torch, the plasma torch comprising an arc-starting tube (110) and an upper electrode assembly (120), characterized in that: The assembly tolerance detection device comprises: a lower electrode positioning tool (210), an upper electrode positioning tool (220) and a measuring ruler; The lower electrode positioning tool (210) comprises: a main body (2110); a first position-limiting portion (2120) disposed on the main body (2110); a first mounting hole (2130) penetrating the first position-limiting portion (2120); and a second mounting hole (2140) penetrating the main body (2110) and communicating with the first mounting hole (2130); The upper electrode positioning tool (220) comprises: a second limiting portion (2210) disposed on the first limiting portion (2120); a third mounting hole (2230) penetrating the second limiting portion (2210) and communicating with the first mounting hole (2130); The bottom end of the upper electrode assembly (120) passes through the third mounting hole (2230) and extends into the first mounting hole (2130), and the shoulder (1210) of the upper electrode assembly abuts against the second limiting portion (2210); the arc-starting tube (110) is fixed in the second mounting hole (2140), and the top end of the arc-starting tube (110) is flush with the top end of the main body (2110); the cross-sections of the second limiting portion (2210) and the first limiting portion (2120) are both semi-circular, so that the bottom end of the upper electrode assembly (120) and the top end of the arc-starting tube (110) are exposed; The measuring ruler is used to measure the distance between the exposed bottom end of the upper electrode assembly (120) and the top end of the arc-starting tube (110), so as to reassemble the upper electrode assembly (120) when the distance does not meet a preset tolerance.

2. The assembly tolerance detection device according to claim 1, characterized in that: The second limiting portion (2210) and the first limiting portion (2120) are fixedly connected via a fastener.

3. The assembly tolerance detection device according to claim 1 or 2, characterized in that: The upper electrode positioning tool (220) further includes: an extension portion (2220) extending downward along the inner edge of the second limiting portion (2210); the extension portion (2220) is located in the first mounting hole (2130), and the third mounting hole (2230) passes through the extension portion (2220).

4. The assembly tolerance detection device according to claim 1, characterized in that: The arc-starting tube (110) and the second mounting hole (2140) are fixedly connected via threads.

5. The assembly tolerance detection device according to claim 1, characterized in that: A limiting surface (2141) is provided in the second mounting hole (2140); and the shoulder (1110) of the arc-striking tube abuts against the limiting surface (2141) to limit the arc-striking tube (110).

6. The assembly tolerance detection device according to claim 5, characterized in that: A sealing ring (130) is provided between the shoulder (1110) of the arc-starting tube and the limiting surface (2141).

7. The assembly tolerance detection device according to claim 1, characterized in that: The main body (2110) and the first limiting portion (2120) are integrally arranged.

8. The assembly tolerance detection device according to claim 1, characterized in that: A base (2150) is provided at one end of the main body (2110) away from the first limiting portion (2120).

9. The assembly tolerance detection device according to claim 8, characterized in that: The main body (2110) and the base (2150) are integrally arranged.

10. The assembly tolerance detection device according to claim 1, characterized in that: The measuring ruler is a vernier caliper.

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