Flame cutting gun cutting torch for liquid fuel

Abstract

The utility model discloses a flame cutting gun cutting torch for liquid fuel, which relates to the field of flame cutting technical equipment and comprises a cutting torch outer protective sleeve, one end of the cutting torch outer protective sleeve is provided with a conical spray outlet, and the other end of the cutting torch outer protective sleeve is provided with an annular retainer ring. A protection sleeve flow guide assembly matched with the conical spraying opening is arranged on the inner side of the cutting torch outer protection sleeve, a cutting torch core assembly is arranged on the inner side of the protection sleeve flow guide assembly, a flow dividing assembly is arranged on the outer side of one end of the cutting torch core assembly in a sleeving mode, and a connecting-in pipe connected with the cutting torch core assembly is arranged at one end of the flow dividing assembly. The cutting torch is scientific and novel in structure, the vortex effect is generated through cooperation of the two flow guide grooves, the liquid fuel spraying force is increased, the walking route of the liquid fuel in the cutting torch forms an S shape through cooperation of the two copper sleeves, the S shape is equivalent to the two-return-stroke output effect, the energy-saving effect is achieved, and the cutting torch is suitable for popularization and application. And the device is suitable for various flame cutting operations with high requirements.

Description

Technical Field

[0001] The utility model relates to the field of flame cutting technical equipment, in particular to a flame cutting gun cutting nozzle for liquid fuel. Background Art

[0002] With the development of industrial production, the requirements for cutting speed and precision are increasing day by day. As a commonly used equipment in metal cutting processing, the flame cutting gun is very important for its ability to cut metal through high-temperature flame. In order to ensure the full combustion of fuel and cutting effect, the flame cutting gun usually needs to be equipped with a special cutting nozzle to ensure the full combustion of fuel and cutting effect; in traditional flame cutting, the design of the cutting nozzle mainly focuses on the gas dynamics injection effect and combustion efficiency. Based on the principle of gas combustion, by mixing and igniting the fuel with an oxidant (such as oxygen), a high-temperature flame is generated to cut metal and other materials. Therefore, the design of the cutting nozzle is very important for the injection control of liquid fuel and the mixing with the oxidant, which directly affects the quality and efficiency of flame cutting.

[0003] For example, Chinese patent CN220717727U discloses a flame cutting nozzle for continuous casting slabs, including a first spray head, a first spray neck diameter, a second spray head, a second spray neck diameter, a positioning card, and a connecting tube. The connecting tube is set as a cylinder, the interior of the connecting tube is an air cavity, and a positioning card is set on the upper outer side of the connecting tube, which can reduce the use of oxygen while reducing the slit width, and effectively improve the billet forming rate. However, the above-mentioned cutting nozzle has the following shortcomings in the specific application process: First, the cutting nozzle adopts multiple spray neck diameters, which increases the possibility of turbulence in the fuel flow, especially when processing liquid fuel, it is easy to have problems such as uneven fuel distribution, gas-liquid mixing and bubble generation, which affect the stability of the flame and the cutting quality; secondly, due to the fluidity and pressure fluctuations of liquid fuel, the two stepped nozzles of the cutting nozzle are difficult to effectively deal with, resulting in gas resistance and turbulence during the cutting process, further reducing the cutting accuracy.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a cutting nozzle of a flame cutting gun for liquid fuel to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A flame cutting gun cutting nozzle for liquid fuel comprises an outer protective sleeve of the cutting nozzle, one end of the outer protective sleeve of the cutting nozzle is provided with a conical nozzle outlet, the other end of the outer protective sleeve of the cutting nozzle is provided with an annular retaining ring, the inner side of the outer protective sleeve of the cutting nozzle is provided with a protective sleeve guide assembly matched with the conical nozzle outlet, the inner side of the protective sleeve guide assembly is provided with a cutting nozzle core assembly, the outer side of one end of the cutting nozzle core assembly is provided with a diverter assembly, and one end of the diverter assembly is provided with an access pipe connected with the cutting nozzle core assembly.

[0008] Furthermore, in order to achieve the formation of a secondary storage chamber through the cooperation between the copper sleeves, so that the liquid fuel has a saturated output state, and will not form a gas-liquid mixture, generate bubbles and air resistance, the protective sleeve guide assembly includes an ejection channel arranged on the inner side of the outer protective sleeve of the cutting nozzle, one end of the ejection channel is provided with an inner hole guide chamber, the other end of the ejection channel is provided with an inner hole direct current chamber connected to the inner hole guide chamber, the inner side of the inner hole direct current chamber is provided with a first copper sleeve that cooperates with the cutting nozzle core assembly, the inner side of the inner hole guide chamber is provided with a plurality of first guide grooves arranged in a circumferential manner, and one end of the inner hole guide chamber is provided with a positioning pin hole that cooperates with the cutting nozzle core assembly.

[0009] Furthermore, in order to form a buffer isolation cavity and prevent air resistance and bubbles from being generated when the pressure of the incoming liquid or gas is unstable, thereby reducing impact and turbulence in the flow, the cutting nozzle core assembly includes a cutting nozzle inner core rod arranged on the inner side of the protective sleeve guide assembly, a buffer platform is arranged at one end of the outer side of the cutting nozzle inner core rod, a second copper sleeve is sleeved at the other end of the outer side of the cutting nozzle inner core rod, a conical nozzle is arranged in the middle of one end of the cutting nozzle inner core rod, and a plurality of second guide grooves arranged in a circumferential manner are opened at one end of the conical nozzle, a plurality of positioning pins are arranged on the outer side of one end of the cutting nozzle inner core rod, a central flow channel is opened on the inner side of one end of the cutting nozzle inner core rod, the radial length of the first copper sleeve is greater than the radial length of the second copper sleeve, the inner diameter of the first copper sleeve is greater than the inner diameter of the second copper sleeve, and the number of the first guide grooves is equal to the number of the second guide grooves.

[0010] Furthermore, in order to ensure uniform fuel distribution, avoid local overload or shortage, and improve the uniformity of fuel flow, the diverter assembly includes a diverter outer ring arranged at one end of the access pipe, one end of the diverter outer ring is provided with a plurality of circumferentially arranged diverter holes, and the other end of the diverter outer ring is provided with a conical retaining ring that matches the annular retaining ring.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model has a scientific and novel structure. The conical nozzle in the cutting nozzle core assembly cooperates with two groups of guide grooves to form a concentrated, high-temperature flame, which improves the precision and speed of cutting. At the same time, the design of the buffer platform and the positioning pin enhances the flame stability, reduces the turbulence and impact in the fuel flow, and ensures the stability of the cutting process. In addition, by cooperating with the two copper sleeves, the liquid fuel forms an S-shaped route inside the cutting nozzle, which is equivalent to the effect of two-return output, plays an energy-saving role, is suitable for various high-demand flame cutting operations, and significantly improves the quality of flame cutting.

[0013] 2. By setting up the protective sleeve guide assembly, the copper sleeves are used to form a secondary storage chamber, so that the liquid fuel has a saturated output state, and no gas-liquid mixing will be formed, bubbles and gas resistance will be generated; at the same time, when assembled and used with the cutting nozzle core assembly, the two sets of guide grooves can be staggered to produce a vortex effect, which increases the force of the liquid fuel spray and makes the flame more stable.

[0014] 3. By setting the cutting nozzle core assembly and the diverter assembly, a buffer isolation chamber is formed in cooperation with the outer protective sleeve of the cutting nozzle to prevent gas resistance and bubbles from being generated when the pressure of the incoming liquid or gas is unstable, reduce the impact and turbulence in the flow, and improve the stability of the flame; at the same time, a part of the fuel is intercepted through the buffer platform, so that pressure can be formed, which plays a role of secondary pressurization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a cutting nozzle of a flame cutting gun for liquid fuel according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic structural diagram of another angle of a cutting nozzle of a flame cutting gun for liquid fuel according to an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the assembly of a cutting nozzle of a flame cutting gun for liquid fuel according to an embodiment of the utility model;

[0019] Figure 4 It is a partial structural schematic diagram of a protective sleeve guide assembly in a cutting nozzle of a flame cutting gun for liquid fuel according to an embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a cutting nozzle core assembly in a cutting nozzle of a flame cutting gun for liquid fuel according to an embodiment of the utility model;

[0021] Figure 6 It is a partial structural schematic diagram of a flow diversion assembly in a cutting nozzle of a flame cutting gun for liquid fuel according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Cutting nozzle outer protective sleeve; 2. Conical spray port; 3. Annular retaining ring; 4. Protective sleeve guide assembly; 401. Spray channel; 402. Inner hole guide cavity; 403. Inner hole direct current cavity; 404. First copper sleeve; 405. First guide groove; 406. Positioning pin hole; 5. Cutting nozzle core assembly; 501. Cutting nozzle inner core rod; 502. Buffer platform; 503. Second copper sleeve; 504. Conical nozzle; 505. Second guide groove; 506. Positioning pin; 507. Center flow channel; 6. Diverter assembly; 601. Diverter outer ring; 602. Diverter hole; 603. Conical retaining ring; 7. Access pipe. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the utility model, a cutting nozzle of a flame cutting gun for liquid fuel is provided.

[0026] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 6 As shown, according to an embodiment of the utility model, a flame cutting gun nozzle for liquid fuel comprises a nozzle outer protective sleeve 1, a conical nozzle outlet 2 is provided at one end of the nozzle outer protective sleeve 1, an annular retaining ring 3 is provided at the other end of the nozzle outer protective sleeve 1, a protective sleeve guide assembly 4 matched with the conical nozzle outlet 2 is provided on the inner side of the nozzle outer protective sleeve 1, a nozzle core assembly 5 is provided on the inner side of the protective sleeve guide assembly 4, a diverter assembly 6 is provided on the outer side of one end of the nozzle core assembly 5, and an access pipe 7 connected to the nozzle core assembly 5 is provided at one end of the diverter assembly 6.

[0027] In addition, in a specific application, the inner hole of the conical jet port 2 is enlarged by 0.8-1.0 mm (according to the design specifications of the cutting nozzle model), and the depth is lowered by 1.0 mm while the hole is enlarged.

[0028] With the aid of the above technical scheme of the utility model, the utility model has a scientific and novel structure. Through the cooperation of the two guide grooves, a vortex effect is generated, thereby increasing the force of the liquid fuel spraying. At the same time, by utilizing the cooperation of the two copper sleeves, the route of the liquid fuel traveling inside the cutting nozzle forms an S shape, which is equivalent to the effect of two-return output, thus achieving energy-saving effect, and is suitable for various high-demand flame cutting operations.

[0029] In one embodiment, for the above-mentioned protective sleeve guide assembly 4, the protective sleeve guide assembly 4 includes an ejection channel 401 arranged on the inner side of the outer protective sleeve 1 of the cutting nozzle, an inner hole guide cavity 402 is arranged at one end of the ejection channel 401, and an inner hole direct current cavity 403 connected to the inner hole guide cavity 402 is arranged at the other end of the ejection channel 401, and a first copper sleeve 404 matched with the cutting nozzle core assembly 5 is arranged on the inner side of the inner hole direct current cavity 403, and a plurality of first guide grooves 405 arranged in a circumferential manner are opened on the inner side of the inner hole guide cavity 402 (in addition, in specific applications, the arrangement positions of the first guide grooves 405 and the second guide grooves 505 are staggered with each other), and a positioning pin hole 406 matched with the cutting nozzle core assembly 5 is opened at one end of the inner hole guide cavity 402, so that through the cooperation between the copper sleeves, a secondary storage cavity is formed, so that the liquid fuel has a saturated output state, and will not form a gas-liquid mixture, generate bubbles and gas resistance.

[0030] The working principle of the protective sleeve guide assembly 4 is as follows: the ejection channel 401 serves as the outlet path of the liquid fuel, ensuring that the liquid fuel can be smoothly guided to the working area; the inner hole guide cavity 402 is used to further guide and regulate the flow of the liquid fuel, making the flow more uniform, thereby improving the flame cutting efficiency and stability; the inner hole direct current cavity 403 cooperates with the cutting nozzle core assembly 5 to provide a transition area for the liquid fuel, which helps to stabilize the fuel flow and reduce turbulence; the first copper sleeve 404 cooperates with the second copper sleeve 503 to form a secondary storage cavity, which allows the liquid fuel to have a saturated output state and will not The gas-liquid mixture is formed, bubbles and air resistance are generated, and the first guide grooves 405 arranged in a circle are helpful to disperse and evenly distribute the fuel flow, thereby improving the quality of the flame. The positioning pin hole 406 cooperates with the positioning pin 506 of the cutting nozzle core assembly 5, so that the two groups of guide grooves can be staggered when the cutting nozzle outer protective sleeve 1 and the cutting nozzle core assembly 5 are assembled and used. In this way, a vortex effect can be generated, and the force of the liquid fuel spraying is increased. At the same time, the two guide grooves are prevented from overlapping, resulting in pressure relief and better atomization, ensuring that the cutting nozzle core assembly 5 is in the correct position, thereby ensuring the overall assembly accuracy and performance of the cutting nozzle.

[0031] In one embodiment, for the above-mentioned cutting nozzle core assembly 5 and the diverter assembly 6, the cutting nozzle core assembly 5 includes a cutting nozzle inner core rod 501 arranged on the inner side of the protective sleeve guide assembly 4, a buffer platform 502 is arranged on one end of the outer side of the cutting nozzle inner core rod 501, a second copper sleeve 503 is sleeved on the other end of the outer side of the cutting nozzle inner core rod 501, a conical nozzle 504 is arranged in the middle of one end of the cutting nozzle inner core rod 501, and a plurality of second guide grooves 505 arranged in a circumferential manner are opened at one end of the conical nozzle 504, a plurality of positioning pins 506 are arranged on the outer side of one end of the cutting nozzle inner core rod 501, a central flow channel 507 is opened on the inner side of one end of the cutting nozzle inner core rod 501, and the first copper sleeve 404 is provided with a plurality of positioning pins 506. The radial length of the first copper sleeve 404 is greater than the radial length of the second copper sleeve 503, and the inner diameter of the first copper sleeve 404 is greater than the inner diameter of the second copper sleeve 503, and the number of the first guide grooves 405 is equal to the number of the second guide grooves 505; the diversion component 6 includes a diversion outer ring 601 arranged at one end of the access pipe 7, and one end of the diversion outer ring 601 is provided with a plurality of circumferentially arranged diversion holes 602, and the other end of the diversion outer ring 601 is sleeved with a conical retaining ring 603 matched with the annular retaining ring 3, thereby forming a buffer isolation cavity to prevent the generation of gas resistance and bubbles when the pressure of the incoming liquid or gas is unstable, reduce the impact and turbulence in the flow, and help improve the stability of the flame.

[0032] The working principle of the cutting nozzle core assembly 5 and the diverter assembly 6 is as follows: the cutting nozzle inner core rod 501, as the main part of the cutting nozzle core assembly 5, is located inside the protective sleeve flow guide assembly 5, and plays a role in supporting and guiding the flow of fuel. A buffer platform 502 is provided at one end of the outer side of the cutting nozzle inner core rod 501, which is located at the position where liquid fuel and oxygen enter. The buffer platform 502 and the cutting nozzle outer protective sleeve 1 form a buffer isolation cavity, which can prevent the generation of air resistance and bubbles when the pressure of the incoming liquid or gas is unstable, reduce the impact and turbulence in the flow, and help to improve the stability of the flame. At the same time, a part of the fuel is intercepted through the buffer platform 502 to form pressure, which plays a role of secondary pressurization.

[0033] The length and diameter of the second copper sleeve 503 are smaller than the first copper sleeve 404 on the inner side of the outer protective sleeve 1 of the cutting nozzle, so that the liquid fuel forms an S-shaped route inside the cutting nozzle, which is equivalent to the effect of two-way output and plays an energy-saving role. At the same time, the second copper sleeve 503 cooperates with the first copper sleeve 404 to intercept the flow and form a reflux of excess fuel. After the reflux, the waste of liquid fuel is reduced and the direct loss of fuel that goes straight out is prevented, thereby reducing fuel consumption.

[0034] The conical nozzle 504 is the final outlet of the flame, which helps to concentrate and accelerate the gas flow, thereby forming a high-temperature and concentrated flame suitable for cutting operations. The circumferentially arranged second guide grooves 505 further optimize the fuel flow, and the number of the first guide grooves 405 is equal to the number of the second guide grooves 505. After assembly, the two guide grooves can be staggered to produce a vortex effect, thereby increasing the force of the liquid fuel spraying, improving the flame quality and cutting efficiency. The central flow channel 507 is the main channel for the fuel flow, ensuring that the fuel can flow smoothly. Flows toward the conical nozzle 504; the diverter outer ring 601 is the main part of the diverter assembly 6, connected to one end of the access pipe 7, providing a transition area for the fuel flow, and the diverter holes 602 are holes on the diverter outer ring, which are arranged in a circle to ensure that the fuel flowing through is evenly distributed to avoid local overload or shortage, which helps to improve the uniformity of fuel flow, thereby improving cutting efficiency and flame stability. The conical retaining ring 603 cooperates with the annular retaining ring 3 to fix the cutting nozzle outer protective sleeve 1 to ensure the assembly of the cutting nozzle outer protective sleeve 1 and the cutting nozzle core assembly 5.

[0035] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0036] In actual application, the outer protective sleeve 1 of the cutting nozzle is connected to the cutting nozzle core assembly 5 through the annular retaining ring 3, and the liquid fuel is introduced from the access pipe 7 and the diverter assembly 6 (the working principle of the diverter assembly 6 is as described above), and enters between the protective sleeve guide assembly 4 on the inner side of the outer protective sleeve 1 of the cutting nozzle and the cutting nozzle core assembly 5 (the working principle of the guide assembly 4 is as described above), and after being pressurized and cut off (the working principle of the cutting nozzle core assembly 5 is as described above), it is ejected from the conical nozzle outlet 2 to perform flame cutting operations.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting nozzle of a flame cutting gun for liquid fuel, comprising a cutting nozzle outer protective sleeve (1), characterized in that: A conical spray port (2) is formed at one end of the outer protective sleeve (1) of the cutting nozzle, an annular retaining ring (3) is provided at the other end of the outer protective sleeve (1), a protective sleeve flow guide assembly (4) matched with the conical spray port (2) is provided on the inner side of the outer protective sleeve (1), a cutting nozzle core assembly (5) is provided on the inner side of the protective sleeve flow guide assembly (4), a flow diversion assembly (6) is provided on the outer side of one end of the cutting nozzle core assembly (5), and an access pipe (7) connected to the cutting nozzle core assembly (5) is provided at one end of the flow diversion assembly (6).

2. A flame cutting gun cutting nozzle for liquid fuel according to claim 1, characterized in that: The protective sleeve flow guide assembly (4) comprises a spray channel (401) arranged on the inner side of the outer protective sleeve (1) of the cutting nozzle, an inner hole flow guide cavity (402) being arranged at one end of the spray channel (401), and an inner hole direct flow cavity (403) connected to the inner hole flow guide cavity (402) being arranged at the other end of the spray channel (401).

3. A flame cutting gun cutting nozzle for liquid fuel according to claim 2, characterized in that: A first copper sleeve (404) matching with the cutting nozzle core assembly (5) is arranged on the inner side of the inner hole direct flow cavity (403), a plurality of first flow guide grooves (405) arranged in a circumferential pattern are provided on the inner side of the inner hole flow guide cavity (402), and a positioning pin hole (406) matching with the cutting nozzle core assembly (5) is provided at one end of the inner hole flow guide cavity (402).

4. A flame cutting gun cutting nozzle for liquid fuel according to claim 3, characterized in that: The cutting nozzle core assembly (5) comprises a cutting nozzle inner core rod (501) arranged inside the protective sleeve guide assembly (4), a buffer platform (502) is arranged at one end outside the cutting nozzle inner core rod (501), and a second copper sleeve (503) is sleeved at the other end outside the cutting nozzle inner core rod (501).

5. A flame cutting gun cutting nozzle for liquid fuel according to claim 4, characterized in that: A conical nozzle (504) is arranged in the middle of one end of the inner core rod (501) of the cutting nozzle, and a plurality of second flow guide grooves (505) arranged in a circumferential pattern are provided at one end of the conical nozzle (504). A plurality of positioning pins (506) are arranged on the outer side of one end of the inner core rod (501) of the cutting nozzle, and a central flow channel (507) is provided on the inner side of one end of the inner core rod (501) of the cutting nozzle.

6. A flame cutting gun cutting nozzle for liquid fuel according to claim 5, characterized in that: The radial length of the first copper sleeve (404) is greater than the radial length of the second copper sleeve (503), the inner diameter of the first copper sleeve (404) is greater than the inner diameter of the second copper sleeve (503), and the number of the first guide grooves (405) is equal to the number of the second guide grooves (505).

7. A flame cutting gun cutting nozzle for liquid fuel according to claim 6, characterized in that: The flow diversion assembly (6) comprises a flow diversion outer ring (601) arranged at one end of the access pipe (7), one end of the flow diversion outer ring (601) is provided with a plurality of flow diversion holes (602) arranged in a circumferential pattern, and the other end of the flow diversion outer ring (601) is sleeved with a conical retaining ring (603) that matches the annular retaining ring (3).

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