CN212858119U - Cutting torch cutting nozzle mounting and sealing structure for machine - Google Patents
Cutting torch cutting nozzle mounting and sealing structure for machine Download PDFInfo
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- CN212858119U CN212858119U CN202021493680.2U CN202021493680U CN212858119U CN 212858119 U CN212858119 U CN 212858119U CN 202021493680 U CN202021493680 U CN 202021493680U CN 212858119 U CN212858119 U CN 212858119U
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Abstract
The utility model discloses a cutting torch mounting and sealing structure for a machine, which comprises a conical mounting body arranged at the rear end and matched with a cutting torch mounting seat, wherein the conical mounting body comprises a first sealing cone, a second sealing cone and a third sealing cone which are sequentially arranged from top to bottom and are positioned on the same conical surface; the mounting and sealing structure also comprises sealing ring grooves which are respectively and correspondingly arranged on the peripheral conical surfaces of the first sealing cone, the second sealing cone and the third sealing cone, and a mounting seat sealing ring is correspondingly mounted in each sealing ring groove; the utility model discloses add installation seal structure on the conical surface of the toper installation body, during the installation, no longer need can realize good sealed effect with toper installation body interference extrusion on the cutting torch mount pad, can realize guaranteeing that the impact and the wearing and tearing of the toper installation body to the cutting torch mount pad can also effectively be cushioned when good sealed effect, effectively reduce the deflection of cutting torch mount pad, prolong the life of cutting torch mount pad.
Description
Technical Field
The utility model relates to a cutting torch technical field especially relates to a cutting torch installation seal structure for machine.
Background
The gas cutting is performed by: a preheating flame formed by combustion of a preheating gas mixed by fuel gas and oxygen gas is injected from a gas cutting nozzle to preheat an object to be cut such as a steel sheet, and cutting oxygen is injected to the object to be cut which is sufficiently preheated to burn a base material, and a molten base material and an oxidation product are removed by injection energy. Then, the gas cutting torch is driven in the target direction while continuing the gas cutting, whereby the workpiece can be cut into a target shape.
The fuel gas for gas cutting comprises acetylene gas, liquefied petroleum gas, natural gas, ethylene gas, hydrogen gas and the like, each fuel gas is provided with a special cutting nozzle, and the cutting nozzle is an important part of the cutting torch and has a great influence on the performance of the whole cutting torch.
FIG. 4 shows a cutting torch structure for a machine, which comprises a cutting torch outer sleeve, a cutting torch core rod and a cutting torch main body, wherein the cutting torch core rod is connected with the cutting torch main body in a threaded fit manner, and the cutting torch main body and the cutting torch outer sleeve are of a split structure and are installed in an insertion manner; after the installation of cutting torch main part is accomplished, and the cooperation forms the air chamber between the conical surface of cutting torch mount pad, in order to improve the leakproofness of air chamber, need tightly extrude the conical surface of cutting torch main part on the conical surface with the cutting torch mount pad during the installation, because the material of cutting torch also generally chooses copper for use, can be compelled to take place to warp on the conical surface of cutting torch mount pad, and dismantle the change back many times, the conical surface deflection of cutting torch mount pad is great, can't carry out interference fit with the conical surface of cutting torch main part again and realize good sealed effect, lead to gaseous the revealing, usability and security all hardly obtain guaranteeing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a machine cutting torch installation seal structure that simple structure, reasonable in design, installation are sealed effectual and can not cause destruction to the conical surface of cutting torch mount pad is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: the cutting torch cutting nozzle mounting and sealing structure for the machine comprises a conical mounting body which is arranged at the rear end and is mounted in a matched manner with a cutting nozzle mounting seat, wherein the conical mounting body comprises a first sealing cone, a second sealing cone and a third sealing cone which are sequentially arranged from top to bottom and are positioned on the same conical surface; the mounting and sealing structure further comprises sealing ring grooves which are respectively and correspondingly arranged on the peripheral conical surfaces of the first sealing cone, the second sealing cone and the third sealing cone, and mounting seat sealing rings are correspondingly mounted in the sealing ring grooves.
As the preferred technical scheme, the sealing ring groove is an arc-shaped ring groove, and the mounting seat sealing ring is an O-shaped rubber sealing ring corresponding to the arc-shaped ring groove.
As a preferred technical scheme, the conical mounting body is an integrally formed powder metallurgy seat body.
As a preferred technical scheme, the conical mounting body is a copper seat body.
Due to the adoption of the technical scheme, the cutting torch cutting nozzle mounting and sealing structure for the machine comprises a conical mounting body which is arranged at the rear end and is matched with a cutting nozzle mounting seat, wherein the conical mounting body comprises a first sealing cone, a second sealing cone and a third sealing cone which are sequentially arranged from top to bottom and are positioned on the same conical surface; the mounting and sealing structure also comprises sealing ring grooves which are respectively and correspondingly arranged on the peripheral conical surfaces of the first sealing cone, the second sealing cone and the third sealing cone, and a mounting seat sealing ring is correspondingly mounted in each sealing ring groove; the utility model has the advantages that: in the prior art, the conical surface of the conical mounting body is tightly extruded on the cutting torch mounting seat to realize the mounting sealing property between the cutting torch mounting seat and the cutting torch mounting seat, but the cutting torch mounting seat is forced to deform due to the sealing mode because the cutting torch is made of copper, and after the cutting torch is dismounted and replaced for many times, the deformation of the cutting torch mounting seat is increased, so that the cutting torch mounting seat can not be in interference fit with the conical surface of the cutting torch main body to realize a good sealing effect, gas leakage can be caused, and even a safety problem can be caused; and the utility model discloses a solve this problem add on the conical surface of toper installation body installation seal structure, during the installation, no longer need with toper installation body interference extrusion can realize good sealed effect on the cutting torch mount pad, can realize guaranteeing that good sealed effect can also effectively cushion the toper installation body is to the impact and the wearing and tearing of cutting torch mount pad, effectively reduces the deflection of cutting torch mount pad, prolongs the life of cutting torch mount pad.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural view of a cutting torch core bar and a cutting torch main body according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a background art structure;
in the figure: 1-cutting nozzle jacket; 2-cutting nozzle main body; 21-a first sealing cone; 22-a second sealing cone; 23-a third sealing cone; 3-cutting nozzle core bar; 31-outer conical surface; 4-an oxygen intake passage; 5-oxygen outlet channel; 6-preheating a gas mixing chamber; 7-preheating gas outlet channel; 8, installing a sealing structure; 81-sealing ring groove; 82-mounting seat sealing ring; 9-an air intake premixing structure; 91-preheating gas inlet chamber; 92-preheat gas premix chamber; 93-a first pre-heating gas channel; 94-second preheated gas passage.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 to 3, the powder metallurgy cutting torch for the machine cutting torch comprises a cutting torch outer sleeve 1, a cutting torch main body 2 is arranged at the rear end of the cutting torch outer sleeve 1, and a cutting torch core rod 3 is arranged at the front end of the cutting torch main body 2; an oxygen inlet channel 4 penetrates through the center of the cutting torch main body 2, an oxygen outlet channel 5 communicated with the oxygen inlet channel 4 is arranged in the center of the cutting torch core rod 3, oxygen enters through the oxygen inlet channel 4 and then is discharged from the oxygen outlet channel 5, and the oxygen cutting effect is realized; referring to fig. 2, the oxygen inlet channel 4 is a cylindrical inlet channel, the oxygen outlet channel 5 is formed by a large-diameter cylindrical channel through conical surface transition from back to front, the diameter of the large-diameter cylindrical channel is the same as that of the cylindrical inlet channel, when oxygen enters the small-diameter cylindrical channel through the large-diameter cylindrical channel, the diameter of the oxygen is suddenly reduced, so that the flow velocity of the oxygen is suddenly increased, and a quick air outlet effect can be realized; a preheating gas mixing chamber 6 is arranged between the cutting nozzle core rod 3 and the cutting nozzle outer sleeve 1, the preheating gas mixing chamber 6 is of an annular structure, the preheating gas mixing chamber 6 is formed by a large-diameter circular ring channel through conical surface transition from back to front, and when mixed gas enters the small-diameter circular ring channel from the large-diameter circular ring channel, the diameter is suddenly reduced, so that the flow velocity of the mixed gas is suddenly increased, and the quick gas outlet effect can be realized; a preheated gas outlet channel 7 communicated with a preheated gas mixing chamber 6 is arranged between the front end of the cutting torch core rod 3 and the front end of the cutting torch outer sleeve 1; in this embodiment, the front end of the cutting torch core rod 3 is provided with a plurality of preheating gas guide grooves in an annular array, which form a quincunx structure the same as the prior art and are mainly used for liquefied petroleum gas, natural gas and ethylene gas, and the plurality of preheating gas guide grooves are combined to form a preheating gas outlet passage 7.
In the embodiment, the cutting torch core rod 3 is fixed on the cutting torch main body 2 through conical surface matching, and has better centering property and sealing property through adopting a conical surface matching mode, the centering property can ensure the matching coaxiality between the cutting torch core rod 3 and the cutting torch main body 2, so that a good positioning effect is realized, and the sealing property can ensure that high-requirement cutting oxygen cannot enter the preheating gas mixing chamber 6 to influence the premixing effect; in addition, the connection is not carried out through threads as in the prior art, the matching installation mode is simpler, and the quick installation effect can be realized.
Further, referring to fig. 2 and 3, the rear end of the cutting torch core rod 3 is provided with an external conical surface 31, the center of the front end of the cutting torch body 2 is provided with an internal conical hole which is installed in cooperation with the external conical surface 31, the rear end of the internal conical hole is also provided with a positioning shoulder which corresponds to the rear end of the cutting torch core rod 3, and the external conical surface 31 is fastened in the internal conical hole in a matching manner; in conical matching, the outer conical surface 31 and the inner conical hole can be automatically centered under the action of axial force, so that the axes of the inner cone and the outer cone have higher coaxiality and can be quickly installed; the inner and outer cone surfaces are matched and ground to have better self-locking performance and sealing performance. In this embodiment, the external conical surface 31 and the internal conical hole are in interference fit, so that the external conical surface 31 has better centering performance and sealing performance, and when the cutting torch is installed, the external conical surface 31 of the cutting torch core rod 3 is fixed in the internal conical hole in an extruding manner instead of a thread fit manner in the prior art, although a certain coaxiality can be ensured by the thread fit manner, the centering effect is poorer than that of the utility model, and the stability and the sealing performance of connection between the external conical surface 31 and the internal conical hole cannot be accurately ensured; meanwhile, the thread machining is needed, the machining process is complex, the requirement on the thread machining precision is high, the efficiency is low, the cost is high, and the batch production of products is not facilitated.
In order to ensure the installation and use effects of the cutting torch, the cutting torch core rod 3 and the cutting torch main body 2 are installed in a matched mode when the cutting torch is delivered, and the problem that the cutting effect of the cutting torch is influenced because the installation precision cannot be ensured when a user installs the cutting torch by himself is avoided, so that the cutting torch core rod 3 is tightly fixed on the cutting torch main body 2 in an extrusion interference fit mode before delivery; however, in order to avoid the phenomenon that the cutting torch core rod 3 is separated from the cutting torch main body 2 due to bumping or collision in the transportation process, the outer ends of the matching surfaces of the cutting torch core rod 3 and the cutting torch main body 2 are welded and fixed, namely, a layer of installation guarantee is further added on the basis of fastening installation. The welding fixing mode can be spot welding or seam welding, and seam welding is adopted in the embodiment, so that stable installation can be realized, and meanwhile, the sealing effect of the connecting part can be further ensured.
Referring to fig. 2 and 3, a conical mounting body which is mounted in a matching manner with the cutting torch mounting seat is arranged at the rear end of the cutting torch main body 2, a mounting sealing structure 8 is arranged on the conical surface of the conical mounting body, and an air inlet premixing structure 9 communicated with the preheated air mixing chamber 6 is further arranged on the conical mounting body. Fuel gas and oxygen enter into respectively in the premixed structure 9 of admitting air, carry out preliminary mixing and form the gas mixture, then reentry to carry out further complete mixing in preheating gas mixing chamber 6, after the misce bene then by preheating gas outlet channel 7 discharges the burning, preheats the cutting piece. In the prior art, the conical surface of the cutting torch main body 2 is tightly extruded on the cutting torch mounting seat to realize the mounting sealing property between the cutting torch mounting seat and the cutting torch mounting seat, but the cutting torch mounting seat is forced to deform due to the sealing mode because the cutting torch is made of copper, and after the cutting torch is disassembled and replaced for many times, the deformation of the cutting torch mounting seat is increased, so that the cutting torch mounting seat can not be in interference fit with the conical surface of the cutting torch main body 2 to realize a good sealing effect, gas leakage can be caused, and even a safety problem can be caused; and the utility model discloses a solve this problem add on the conical surface of toper installation body installation seal structure 8, during the installation, no longer need with toper installation body interference extrusion can realize good sealed effect on the cutting torch mount pad, can realize guaranteeing that good sealed effect can also effectively cushion the toper installation body is to the impact and the wearing and tearing of cutting torch mount pad, effectively reduces the deflection of cutting torch mount pad, prolongs the life of cutting torch mount pad.
Referring to fig. 2 and 3, the conical mounting body includes a first sealing cone 21, a second sealing cone 22 and a third sealing cone 23 which are sequentially arranged from top to bottom and located on the same conical surface, and the first sealing cone 21, the second sealing cone 22 and the third sealing cone 23 are gradually enlarged from top to bottom to form a conical surface structure matched with the cutting torch mounting seat.
Referring to fig. 2 and 3, the mounting and sealing structure 8 includes sealing ring grooves 81 respectively and correspondingly disposed on the outer peripheral conical surfaces of the first sealing cone 21, the second sealing cone 22 and the third sealing cone 23, a mounting seat sealing ring 82 is correspondingly mounted in each sealing ring groove 81, and the three mounting seat sealing rings 82 together form the mounting and sealing structure 8. In this embodiment, sealing washer annular 81 is the arc annular, mount pad sealing washer 82 is O type rubber seal, O type rubber seal compresses tightly in the arc annular, O type rubber seal's outside surpasss the sealed cone surface that corresponds and is used for sealing up the cooperation with the cutting torch mount pad. After the cutting torch core rod 3, the cutting torch main body 2 and the cutting torch outer sleeve 1 are installed in a matched mode, when the cutting torch core rod is required to be installed in a cutting torch installation seat, firstly, each installation seat sealing ring 82 is correspondingly installed in the sealing ring annular groove 81, then, the cutting torch main body 2 is pushed towards the upper cutting torch installation seat, the sealing ring annular groove 81 is tightly pressed on the cutting torch installation seat in a sealing mode, and then, the cutting torch is integrally fixed through the matching of a cutting torch screw cap; in the utility model, the conical surface of the conical mounting body is not required to be tightly extruded on the cutting torch mounting seat as in the prior art, but the sealing effect between the conical mounting body and the cutting torch mounting seat is ensured through the mounting seat sealing ring 82, so that unsafe phenomena such as air leakage and the like are avoided; simultaneously because mount pad sealing washer 82 pressure equipment is in between the external conical surface 31 of toper installation body and the cutting torch mount pad, consequently the cooperation relation between the external conical surface 31 of toper installation body and the cutting torch mount pad can be transition fit or clearance fit, no longer like interference fit among the prior art, at this moment mount pad sealing washer 82 can also effectively cushion the toper installation body with the impact of fitting surface between the cutting torch mount pad avoids making the cutting torch mount pad take place great deformation, can not lead to the fact wearing and tearing to the cutting torch mount pad, has prolonged the life of cutting torch.
Referring to fig. 2 and 3, the intake premixing structure 9 includes a preheated air inlet chamber 91 disposed between the first sealing cone 21 and the second sealing cone 22, and a preheated air premixing chamber 92 disposed between the second sealing cone 22 and the third sealing cone 23, a plurality of first preheated air passages 93 communicating the preheated air inlet chamber 91 with the preheated air premixing chamber 92 are uniformly distributed on the second sealing cone 22, and a plurality of second preheated air passages 94 communicating the preheated air premixing chamber 92 with the preheated air mixing chamber 6 are uniformly distributed on the third sealing cone 23. In this embodiment, the preheated gas inlet chamber 91 and the preheated gas premixing chamber 92 are annular gas chambers formed by matching with the cutting torch mounting seat; six first preheating gas passages 93 and six second preheating gas passages 94 are arranged, and the first preheating gas passages 93 and the second preheating gas passages 94 are cylindrical holes.
The first sealing cone 21 is matched with the two mounting seat sealing rings 82 on the second sealing cone 22 to ensure the sealing effect in the preheated gas inlet chamber 91, and the second sealing cone 22 is matched with the two mounting seat sealing rings 82 on the third sealing cone 23 to ensure the sealing effect in the preheated gas premixing chamber 92, so that the preheated gas inlet chamber 91 and the preheated gas premixing chamber 92 are independently separated; in this embodiment, oxygen enters the pre-heating gas inlet chamber 91, and fuel gas enters the pre-heating gas premixing chamber 92. After entering the preheated gas inlet chamber 91, the oxygen moves forward through the first preheated gas passage 93 to the preheated gas premixing chamber 92, is primarily mixed with the fuel gas in the preheated gas premixing chamber 92, then continues to move forward through the second preheated gas passage 94, and moves into the preheated gas mixing chamber 6 to be mixed next.
In the prior art, the cutting torch is mainly made of red copper and is machined by a numerical control machine, the cutting torch is insufficient in hardness and poor in wear resistance due to the fact that the copper material is soft, and in order to solve the problem, chromium is plated on the surface of the cutting torch outer sleeve 1 to improve the hardness, so that the cost is high and the operation is complex; therefore, the cutting torch outer sleeve 1, the cutting torch core rod 3 and the cutting torch main body 2 are respectively of an integrally formed powder metallurgy structure. The cutting torch outer sleeve 1, the cutting torch core rod 3 and the cutting torch main body 2 are respectively processed and manufactured by adopting a powder metallurgy process, and the processing specific steps comprise:
(1) selecting metal powder meeting the requirements, selecting a binder according to the type of the metal powder, mixing the metal powder and the binder, and granulating to prepare a raw material suitable for injection molding, wherein in the embodiment, the metal powder is stainless steel powder;
(2) manufacturing a mould for injection moulding according to the sizes and the structures of the cutting torch outer sleeve 1, the cutting torch main body 2 and the cutting torch core rod 3, and injecting raw materials into the mould by using an injection moulding machine for moulding;
(3) removing the binder in the product formed by the die by a chemical method or a heating decomposition method;
(4) sintering and densifying the product subjected to binder removal at high temperature to obtain a sintered product;
(5) carrying out post-treatment on the sintered product as required to obtain a final finished product;
each part is formed in one step through a die, additional machining holes and the like are not needed, the machining mode is more convenient, the cost is lower, the production efficiency is high, and mass production can be realized; the consistency of the produced components is better, the interchangeability of the components is higher in the assembly process of the cutting nozzle, the connection mode does not need to be matched by processing threads after being respectively processed as in the prior art, and the quick installation can be realized; furthermore, the utility model discloses the cutting torch that forms is the stainless steel cutting torch, and hardness and the wearability of its structure etc. are all better, non-deformable, long service life.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. Cutting torch cutting nozzle mounting and sealing structure for machine, which is characterized in that: the cutting torch mounting structure comprises a conical mounting body which is arranged at the rear end of a cutting torch of a machine cutting torch and is mounted in a matching way with a cutting torch mounting seat, wherein the conical mounting body comprises a first sealing cone, a second sealing cone and a third sealing cone which are sequentially arranged from top to bottom and are positioned on the same conical surface; the mounting and sealing structure further comprises sealing ring grooves which are respectively and correspondingly arranged on the peripheral conical surfaces of the first sealing cone, the second sealing cone and the third sealing cone, and mounting seat sealing rings are correspondingly mounted in the sealing ring grooves.
2. The machine cutting torch cutting tip mounting seal structure of claim 1, wherein: the sealing ring annular is the arc annular, the mount pad sealing washer be with the O type rubber seal that the arc annular corresponds.
3. The machine cutting torch cutting tip mounting seal structure of claim 1, wherein: the conical mounting body is an integrally formed powder metallurgy seat body.
4. The machine cutting torch cutting tip mounting seal structure of claim 1, wherein: the conical mounting body is a copper seat body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493680.2U CN212858119U (en) | 2020-07-24 | 2020-07-24 | Cutting torch cutting nozzle mounting and sealing structure for machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493680.2U CN212858119U (en) | 2020-07-24 | 2020-07-24 | Cutting torch cutting nozzle mounting and sealing structure for machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212858119U true CN212858119U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021493680.2U Active CN212858119U (en) | 2020-07-24 | 2020-07-24 | Cutting torch cutting nozzle mounting and sealing structure for machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212858119U (en) |
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2020
- 2020-07-24 CN CN202021493680.2U patent/CN212858119U/en active Active
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| GR01 | Patent grant | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of utility model: Installation and sealing structure of cutting torch Effective date of registration: 20210507 Granted publication date: 20210402 Pledgee: Weifang Chengxin Financing Guarantee Co.,Ltd. Pledgor: SHANDONG DINGCHENG NEW MATERIALS Co.,Ltd. Registration number: Y2021980003320 |
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Effective date of registration: 20220920 Granted publication date: 20210402 |