Baking gun for deep bed filtering device of casting workshop
By designing a heating gun that combines gas and high-pressure gas pipes, the problems of low heating efficiency and uniformity in deep bed filtration devices were solved, achieving rapid and efficient heating and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520328761.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing deep bed filtration devices have low heating efficiency and cannot heat evenly, resulting in low production efficiency, energy waste, and product quality problems.
Design a heating gun that includes a gas pipe and a high-pressure gas pipe. The high-pressure gas increases the gas flow rate, and after mixing in the mixing chamber, the gas is ejected from the nozzle, forming a funnel-shaped expanding mixed gas injection pattern to ensure uniform heating.
It achieves rapid and efficient heating, avoids uneven temperature inside the deep bed, improves production efficiency and product quality, and reduces maintenance costs.
Smart Images
Figure CN223826233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat treatment technology, specifically to a baking gun for a deep bed filtration device in a casting workshop. Background Technology
[0002] In casting workshops, deep-bed filtration systems are often used to remove impurities from molten metal, thereby ensuring product quality and performance. Current deep-bed filtration systems primarily use electric heating and simple gas heating torches for heating.
[0003] Deep bed filtration devices often require temperatures of 720-750℃ during production to ensure their filtration efficiency and performance. However, existing heating technologies are inefficient and require up to 7 days of continuous baking to barely reach the target temperature. This prolonged baking not only consumes a lot of energy but also seriously affects the production schedule.
[0004] Furthermore, existing heating technologies cannot heat the interior of deep bed filtration devices evenly, which can easily lead to uneven temperature distribution inside the deep bed and cause problems such as the bottom of the deep bed becoming stuck. This not only affects the service life of the deep bed filtration device, but also has an adverse effect on product quality. The occurrence of the stuck phenomenon often requires additional maintenance and repair work, which not only increases production costs, but also leads to unnecessary downtime. Summary of the Invention
[0005] This invention addresses the problems of low heating efficiency and inability to uniformly heat the interior of existing deep-bed filtration devices by providing a heating torch for deep-bed filtration devices in casting workshops. This heating torch not only offers high heating efficiency and stable heating during deep-bed heating but also provides uniform heating to the interior of the deep bed, effectively preventing casting blockage.
[0006] To solve the above problems, the technical solution of this utility model is:
[0007] A baking gun for a deep bed filtration device in a casting workshop includes a gun body and a gas pipe disposed on and connected to the gun body, and also includes a high-pressure gas pipe disposed on and connected to the gun body. The gas outlet of the gun body is connected to a mixing chamber, and the gas pipe is located between the high-pressure gas pipe and the mixing chamber.
[0008] The air outlet of the mixing chamber is connected to the ejection pipe, which includes an inner tube and an outer tube. The outer tube at the air outlet of the ejection pipe expands outward into a trumpet shape, and the channel between the outer tube and the inner tube at this end also expands outward into a trumpet shape.
[0009] By adopting the above scheme, by setting up a gas pipe and a high-pressure gas pipe connected to the gun body, the flow rate of the gas can be greatly increased under the drive of the high-pressure gas, thereby increasing the amount of gas ignited per unit time, increasing the size of the combustion flame, and thus achieving rapid heating of the deep bed filtration device.
[0010] In addition, connecting a mixing chamber to one end of the gun body allows the gas and high-pressure gas to mix in the mixing chamber before entering the nozzle and being discharged. This ensures that the gas discharged from the nozzle is always a mixture of gas and high-pressure gas, thus making the combustion flame temperature of the ignited gas more stable.
[0011] In addition, the outer tube at the outlet end of the nozzle and the channel between the outer tube and the inner tube at that end are both expanded outward in a funnel shape. This allows the mixed gas flowing through the channel between the inner and outer tubes to form an outward expanding spray pattern when it is ejected, thereby increasing the spray area of the mixed gas and increasing the baking area of the baking gun. This avoids concentrated heating of the deep bed filter device and thus avoids uneven temperature distribution inside the deep bed.
[0012] Based on the above solution, the present invention can be further improved as follows:
[0013] Furthermore, the mixing chamber is provided with at least one grid plate, so that after the gas and high-pressure gas enter the mixing chamber, the presence of the grid plate allows the gas to mix for a longer period of time in the mixing chamber.
[0014] Furthermore, there are at least two grid plates, with different grid plates arranged parallel to each other along the length of the mixing chamber, and the mesh holes on the different grid plates are staggered, thereby further increasing the contact opportunities between the gas and the high-pressure gas in the mixing chamber.
[0015] Furthermore, a second grid plate is provided at one end of the mixing chamber near the ejector pipe. The channels inside the inner tube and the channels between the outer tube and the inner tube are all connected to the mixing chamber, so that when the mixed gas enters the ejector pipe from the mixing chamber, it can enter the two channels of the ejector pipe separately before being ejected, thus avoiding the concentrated distribution of the mixed gas ejected from the ejector pipe.
[0016] Furthermore, the diameter of any cross-section within the mixing chamber is larger than the diameter of the gun body cross-section, providing a larger space for the mixing of the combustion gas and the high-pressure gas, thereby enabling them to mix thoroughly.
[0017] Furthermore, the wall of the mixing chamber has a smooth overall transition.
[0018] The beneficial effects of this utility model through the above technical solution are as follows:
[0019] In this invention, by setting up a high-pressure gas pipe, the flow rate of the gas is greatly increased under the drive of the high-pressure gas, thereby increasing the amount of gas ignited per unit time and thus rapidly heating the deep bed filter device. Furthermore, by setting up a mixing chamber, the gas discharged from the nozzle is always a mixture of gas and high-pressure gas, resulting in a more stable combustion flame temperature. At the same time, since the outer tube at the outlet end of the nozzle and the channel between the outer and inner tubes at this end are both expanded outward in a funnel shape, the mixed gas flowing through the channel between the inner and outer tubes can form an outward expanding spray pattern when ejected, thereby increasing the spray area of the mixed gas and increasing the baking area of the baking gun. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention;
[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0023] Figure 4 This is a schematic diagram of the structure of the ejector pipe and the second mesh plate in this utility model;
[0024] Figure 5 This is a cross-sectional schematic diagram of the ejector pipe in this utility model.
[0025] The attached diagram is labeled as follows: 1. Gun body, 2. Gas pipe, 3. High-pressure gas pipe, 4. Mixing chamber, 5. Grid plate one, 6. Spray pipe, 601. Inner tube, 602. Outer tube, 7. Grid plate two. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0027] like Figures 1-2 As shown, a baking gun for a deep bed filtration device in a casting workshop includes a gun body 1, a gas pipe 2 disposed on and connected to the gun body 1, and a high-pressure gas pipe 3 disposed on and connected to the gun body 1.
[0028] In this embodiment, the gas pipe 2 and the high-pressure gas pipe 3 are connected to the external gas cylinder and high-pressure gas cylinder respectively through flexible hoses, and are used to introduce gas and ordinary high-pressure gas into the gun body 1 respectively. The high-pressure gas pipe 3 is connected to the end of the gun body 1, and the connection is rounded. Under the drive of the high-pressure gas, the flow rate of the gas can be greatly increased, thereby increasing the amount of gas ignited per unit time, thus realizing rapid heating of the deep bed filtration device.
[0029] The outlet end of the gun body 1 is connected to the inlet end of the mixing chamber 4. The gas pipe 2 is located between the high-pressure gas pipe 3 and the mixing chamber 4. The mixing chamber 4 is provided with two grid plates 5 arranged parallel to each other along the length of the mixing chamber 4, and the mesh holes on the different grid plates 5 are interlaced.
[0030] The air outlet of the mixing chamber 4 is connected to the air inlet of the spray pipe 6, and the spray pipe 6 includes an inner pipe 601 and an outer pipe 602 (e.g., Figure 3 As shown, the inner tube 601 is a regular straight tube, and the outer tube 602 at the outlet end of the ejector pipe 6 expands outward into a trumpet shape. The channel between the outer tube 602 and the inner tube 601 at this end also expands outward into a trumpet shape.
[0031] In this embodiment, after the gas and high-pressure gas enter the mixing chamber 4, the presence of the grid plate 5 allows the gas to mix for a longer period of time in the mixing chamber 4 before entering the ejector pipe 6 for discharge. This ensures that the gas discharged from the ejector pipe 6 is always a mixture of gas and high-pressure gas, thereby making the temperature of the ignited gas combustion flame more stable.
[0032] In addition, the outer tube 602 at the outlet end of the nozzle 6 and the channel between the outer tube 602 and the inner tube 601 at this end are both expanded outward in a funnel shape, so that the mixed gas flowing through the channel between the inner tube 601 and the outer tube 602 can form an outward expansion spray pattern when it is sprayed out, thereby increasing the spray area of the mixed gas and increasing the baking area of the baking gun, thus uniformly heating the inside of the deep bed filter device.
[0033] As one possible implementation, the mixing chamber 4 is provided with a mesh plate 7 at one end near the ejector pipe 6 (e.g., Figure 4 and Figure 5 As shown, the channels in the inner tube 601 and the channel between the outer tube 602 and the inner tube 601 are all connected to the mixing chamber 4, so that when the mixed gas enters the ejector pipe 6 from the mixing chamber 4, it can enter the two channels of the ejector pipe 6 respectively and then be ejected, thus avoiding the concentrated distribution of the mixed gas ejected from the ejector pipe 6.
[0034] As one possible implementation, the diameter of any cross section in the mixing chamber 4 is larger than the diameter of the gun body 1, providing more space for mixing coal gas and high-pressure gas, thereby improving the mixing effect, and the pipe wall of the mixing chamber 4 has a smooth overall transition.
[0035] In this embodiment, when used:
[0036] First, a small amount of gas is introduced into the gun body 1 through gas pipe 2. The operator ignites the small amount of gas ejected from the outlet end of the nozzle 6, thereby extending the heating gun into the interior of the deep bed filter device and fixing it to the deep bed filter device (for example, by setting up a separate clamping structure; or by fixing it with a metal fixing strap: the fixing strap is placed on the outer side of the heating gun so that it fits tightly against the deep bed filter device, and the two ends of the fixing strap are fixed to the deep bed filter device with bolts, thereby achieving the fixation of the heating gun and the deep bed filter device). Then, the amount of gas introduced is increased, and at the same time, the high-pressure gas pipe 3... High-pressure gas is introduced into the gun body 1, so that the high-pressure gas and coal gas will enter the mixing chamber 4. Under the action of the grid plate 5 in the mixing chamber 4, the high-pressure gas and coal gas have more time to mix. Then, through the grid plate 7, they enter the two channels of the spray pipe 6 respectively, are sprayed out and ignited. (The mixed gas sprayed outward from the channel between the outer tube 602 and the inner tube 601 will form an outward expansion and inclined spray pattern, thereby expanding the baking area of the baking gun and achieving uniform heating of the deep bed filter device.)
[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present invention without departing from the spirit of the present invention or the scope of disclosure shall fall within the protection scope of the present invention.
Claims
1. A baking gun for a foundry plant deep bed filter device, comprising a gun body (1) and a gas pipe (2) arranged on the gun body (1) and communicating with the gun body (1), characterized in that, It also includes a high-pressure gas pipe (3) disposed on the gun body (1) and connected to the gun body (1), the gas outlet of the gun body (1) being connected to the mixing chamber (4), and the gas pipe (2) being located between the high-pressure gas pipe (3) and the mixing chamber (4); The outlet end of the mixing chamber (4) is connected to the ejector pipe (6). The ejector pipe (6) includes an inner tube (601) and an outer tube (602). The outer tube (602) at the outlet end of the ejector pipe (6) expands outward in a trumpet shape, and the channel between the outer tube (602) and the inner tube (601) at this end also expands outward in a trumpet shape.
2. A bake gun for a foundry plant deep bed filter according to claim 1, characterized in that, The mixing chamber (4) is provided with at least one grid plate (5).
3. A bake gun for a foundry plant deep bed filter according to claim 2, wherein There are at least two mesh plates (5), and the different mesh plates (5) are arranged parallel to each other along the length of the mixing chamber (4), and the mesh holes on the different mesh plates (5) are interlaced.
4. A bake gun for a foundry plant deep bed filter according to any one of claims 1 to 3, characterised in that, The mixing chamber (4) is provided with a grid plate (7) at one end near the ejector pipe (6). The channel in the inner tube (601) and the channel between the outer tube (602) and the inner tube (601) are all connected to the mixing chamber (4).
5. A bake gun for a foundry plant deep bed filter according to any one of claims 1 to 3, characterised in that, The diameter of any section within the mixing chamber (4) is greater than the diameter of the gun body (1).
6. A bake gun for a foundry plant deep bed filter according to any one of claims 1 to 3, characterised in that, The wall of the mixing chamber (4) has a smooth transition.