Drying mechanism for long cylinder type casting shell production

Abstract

The invention relates to the technical field of mold shell drying equipment, one embodiment of the invention provides a drying mechanism for long-barrel type casting shell production, the drying mechanism comprises a placing frame, and a mold shell is arranged on the placing frame; the gas conveying pipe is provided with an exhaust port, the exhaust port extends into the inner cavity of the mold shell, the gas conveying pipe is used for conveying dry gas into the inner cavity, and a gap is formed between the outer wall of the gas conveying pipe and the inner wall of the inner cavity and used for exhausting moisture in the inner cavity; the air injection barrel is detachably arranged on the exhaust port and is provided with a main flow channel, the main flow channel is communicated with the air conveying pipe, a spiral flow channel is formed in the inner wall of the air injection barrel, and air sprayed out of the spiral flow channel and air sprayed out of the main flow channel are mixed to form spiral air flow to be sprayed into the inner cavity. By means of the technical scheme, the technical problem that in the prior art, due to the fact that an inner cavity of a formwork is deep and the wall thickness of the formwork is large, in the actual drying process, the drying speed difference of the inner cavity of the formwork and the drying speed difference of the outer wall of the formwork are large due to poor internal air circulation is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of shell drying equipment, and more specifically, to a drying mechanism for long-tube casting shell production. Background Art

[0002] At present, the foundry industry is booming continuously. There are more and more casting methods, such as sand mold casting method, metal mold casting method and investment casting method. Among them, the investment casting method is also called the lost wax casting method, which is a relatively common precision casting method at present. In investment casting, the shell forming process needs to be made in multiple layers, and each layer needs to wait for the previous layer to dry before proceeding. At present, the drying method is mainly natural drying under a constant temperature and humidity environment. For shells with simple structures or no long-tube structures, natural drying can meet the requirements. However, for long-tube shells, due to the relatively deep inner cavity and large wall thickness of the shell, the drying speed of the inner cavity and the outer wall of the shell is quite different during the actual drying process because of poor internal air circulation, and natural drying cannot meet the requirements. Therefore, a special method is needed to accelerate the air circulation in the inner cavity, so as to accelerate the drying speed of the inner cavity shell. Therefore, a drying mechanism that can quickly dry the inner cavity of the shell is needed to solve the above problems. Summary of the Invention

[0003] To overcome the above defects, embodiments of the present disclosure provide a drying mechanism for long-tube casting shell production, which solves the technical problem in the prior art that due to the relatively deep inner cavity and large wall thickness of the shell, the drying speed of the inner cavity and the outer wall of the shell is quite different during the actual drying process because of poor internal air circulation.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a drying mechanism for long-tube casting shell production, which is used to dry a shell. The shell has an inner cavity and includes: A placement rack, on which the shell is arranged; An air delivery pipe with an exhaust port extending into the inner cavity of the shell. The air delivery pipe is used to deliver drying gas into the inner cavity. There is a gap between the outer wall of the air delivery pipe and the inner wall of the inner cavity, and the gap is used to discharge the moisture in the inner cavity; An air jet tube detachably arranged on the exhaust port. The air jet tube has a main flow channel communicated with the air delivery pipe. A spiral flow channel is opened on the inner wall of the air jet tube. The inlet of the spiral flow channel is communicated with the air delivery pipe, and the outlet of the spiral flow channel is communicated with the main flow channel. The gas ejected from the spiral flow channel is mixed with the gas ejected from the main flow channel to form a spiral air flow and spray into the inner cavity.

[0005] Optionally, it further includes: The rotating end cap is rotatably arranged on the air jet cylinder, and the rotating end cap has a plurality of air outlets arranged at intervals; The impeller is rotatably arranged in the air jet cylinder. The impeller is fixedly connected to the rotating end cap. After the spiral air flow drives the impeller to rotate, the impeller drives the rotating end cap to rotate.

[0006] Optionally, it further includes: The air supply tank has a plurality of air supply ports arranged at intervals, and the air supply tank is used to supply dry gas to the air delivery pipe; There are a plurality of connecting pipes, and each connecting pipe is arranged on one of the air supply ports; The mounting seat is detachably arranged on the connecting pipe. The mounting seat has an air flow channel inside, and the air delivery pipe is communicated with the air flow channel.

[0007] Optionally, the placement rack is a grid structure, the placement rack has a plurality of mesh holes, the placement rack is divided into several layers from top to bottom, and the opening directions of the formwork shells located on the placement rack are opposite.

[0008] Optionally, the outer wall of the formwork shell has an end face, and it further includes: The limiting frame is arranged on the placement rack. The formwork shell abuts against the limiting frame through the end face, and the limiting frame is used to fix the formwork shell.

[0009] Optionally, it further includes: The support rod is arranged on the limiting frame; The fixing ring is arranged on the support rod. The air delivery pipe passes through the fixing ring, and the fixing ring is used to support the air delivery pipe.

[0010] Optionally, it further includes: The fixing cylinder is detachably arranged on the air jet cylinder; The rotating body is arranged on the axle of the impeller, and the rotating body is located inside the fixing cylinder. After the impeller rotates, it drives the rotating body to rotate. There is a through groove between the outer circumferential wall of the rotating body and the inner wall of the fixing cylinder, and the through groove is communicated with the main flow channel.

[0011] Optionally, it further includes: The telescopic adjusting seat is arranged on the rotating body. The rotating body is connected to the axle of the impeller through the telescopic adjusting seat, and the telescopic adjusting seat is used to adjust the distance between the rotating body and the axle of the impeller.

[0012] Optionally, the air delivery pipe has a plug connector, and the air delivery pipe is inserted into the mounting seat through the plug connector.

[0013] The beneficial effects of the embodiments of the present disclosure are: When drying work is carried out in the present disclosure, the air supply device conveys dry gas through an air delivery pipe. It should be noted that the dry gas is a low-temperature gas. A part of the dry gas is directly ejected through the main flow channel, and another part forms a spiral air flow through the spiral flow channel. The two are mixed at the outlet of the air jet cylinder and sprayed into the inner cavity of the mold shell in the form of a spiral air flow. The spiral air flow can more comprehensively contact all parts of the inner cavity of the mold shell, realizing comprehensive displacement and dead-angle-free cooling and drying. Moreover, since the dry gas is sprayed into the inner cavity in a spiral manner, the moisture also discharges from the gap in a spiral manner, accelerating the discharge speed of the moisture and improving the drying effect on the mold shell.

[0014] Compared with traditional natural cooling and drying, by conveying dry gas into the inner cavity of the mold shell, the drying speed can be accelerated. The formation of the spiral air flow, on the one hand, increases the contact area and time between the gas and the inner cavity wall of the mold shell, accelerates air circulation, and improves the drying efficiency; on the other hand, the spiral air flow can generate a certain driving effect, enabling the moisture in the inner cavity of the mold shell to be discharged faster, and at the same time making the drying speed of each part in the inner cavity of the mold shell more uniform, reducing the quality problems of the mold shell caused by the drying speed difference. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments of the present disclosure. Obviously, the following drawings are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present disclosure and these drawings.

[0016] Figure 1 It is a schematic structural diagram of the overall drying structure in an embodiment of the present disclosure; Figure 2 It is a schematic structural diagram of the air delivery pipe and the internal structure of the mold shell in an embodiment of the present disclosure; Figure 3 In the present disclosure Figure 2 Partial enlarged view at A; Figure 4 In the present disclosure Figure 1 Partial enlarged view at B; Figure 5 It is a schematic structural diagram of the rotating body and the fixed cylinder in another embodiment of the present disclosure; Figure 6 It is a schematic internal structure diagram of the rotating body and the fixed cylinder in another embodiment of the present disclosure.

[0017] In the figure: 1, formwork; 101, inner cavity; 102, gap; 103, end face; 2, placement rack; 3, gas transmission pipe; 301, exhaust port; 302, socket; 4, air jet tube; 401, main flow channel; 402, spiral flow channel; 403, rotating end cover; 4031, air outlet; 5, impeller; 6, air supply tank; 601, air supply port; 602, connection port; 7, connecting pipe; 8, mounting seat; 801, air flow channel; 9, mesh hole; 10, limiting rack; 11, support rod; 12, fixing ring; 13, fixing cylinder; 14, rotating body; 15, through slot; 16, telescopic mounting plate. Detailed implementation mode The following further elaborates on the present disclosure in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely for explaining the present disclosure and not for limiting the present disclosure.

[0018] To make the drawings concise, only the parts related to the disclosure are schematically shown in each drawing, and they do not represent their actual structures as products. Additionally, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one" but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0019] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0020] In the present disclosure, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can also include the situation where the first and second features are not in direct contact but through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0021] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present disclosure.

[0022] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0023] As Figures 1 to 4 shown, it shows a drying mechanism for long cylindrical casting shell production in an embodiment of the present disclosure, which is used to dry the mold shell 1. The mold shell 1 has an inner cavity 101 and includes a placement rack 2. The mold shell 1 is arranged on the placement rack 2; the air delivery pipe 3 has an exhaust port 301, and the exhaust port 301 extends into the inner cavity 101 of the mold shell 1. The air delivery pipe 3 is used to deliver drying gas into the inner cavity 101. There is a gap 102 between the outer wall of the air delivery pipe 3 and the inner wall of the inner cavity 101, and the gap 102 is used to discharge the moisture in the inner cavity 101; the jet tube 4 is detachably arranged on the exhaust port 301. The jet tube 4 has a main flow channel 401, and the main flow channel 401 is communicated with the air delivery pipe 3. A spiral flow channel 402 is formed on the inner wall of the jet tube 4. The inlet of the spiral flow channel 402 is communicated with the air delivery pipe 3, and the outlet of the spiral flow channel 402 is communicated with the main flow channel 401. The gas ejected from the spiral flow channel 402 is mixed with the gas ejected from the main flow channel 401 to form a spiral air flow and is ejected into the inner cavity 101.

[0024] For example, as Figure 1 and Figure 3 shown, the placement rack 2 is a multi-layer frame structure. One end of the air delivery pipe 3 is connected to a gas supply device, and the other end extends into the inner cavity 101 of the mold shell 1. The exhaust port 301 of the air delivery pipe 3 is connected to the jet tube 4. The jet tube 4 can be installed on the exhaust port 301 by detachable means such as threaded connection or rotary connection.

[0025] The air delivery pipe 3 extends into the inner cavity 101 of the mold shell 1 and there is a gap 102 between it and the inner wall of the inner cavity 101. The jet tube 4 has a main flow channel 401 and a spiral flow channel 402, and the inlet and outlet of the spiral flow channel 402 are respectively communicated with the air delivery pipe 3 and the main flow channel 401.

[0026] When performing the drying work, the air supply device conveys the drying gas through the air delivery pipe 3. It should be noted that the drying gas is a low-temperature gas. A part of the drying gas is directly ejected through the main flow channel 401, and another part forms a spiral air flow through the spiral flow channel 402. The two are mixed at the outlet of the jet tube 4 and then sprayed into the inner cavity 101 of the mold shell 1 in the form of a spiral air flow. The spiral air flow can more comprehensively contact all parts of the inner cavity 101 of the mold shell 1, realizing full-displacement and dead-angle-free cooling and drying. Moreover, since the drying gas is sprayed into the inner cavity 101 in a spiral manner, the moisture also discharges from the gap 102 in a spiral manner, accelerating the discharge speed of the moisture and improving the drying effect on the mold shell 1.

[0027] Compared with traditional natural cooling and drying, by conveying the drying gas into the inner cavity 101 of the mold shell 1, the drying speed can be accelerated. The formation of the spiral air flow, on the one hand, increases the contact area and time between the gas and the wall of the inner cavity 101 of the mold shell 1, making the heat transfer more sufficient and improving the drying efficiency; on the other hand, the spiral air flow can generate a certain driving effect, enabling the moisture in the inner cavity 101 of the mold shell 1 to be discharged faster, and at the same time making the drying speed of each part of the inner cavity 101 of the mold shell 1 more uniform, reducing the quality problems of the mold shell 1 caused by the drying speed difference.

[0028] In some examples, it also includes a rotating end cap 403. The rotating end cap 403 is rotatably arranged on the jet tube 4. The rotating end cap 403 has a number of outlet ports 4031 arranged at intervals; the impeller 5 is rotatably arranged in the jet tube 4. The impeller 5 is fixedly connected to the rotating end cap 403 through a wheel shaft. After the spiral air flow drives the impeller 5 to rotate, the impeller 5 drives the rotating end cap 403 to rotate.

[0029] For example, as Figure 2 shown, an annular groove is provided on the outer periphery of the jet tube 4. The rotating end cap 403 rotates in the groove by means of ball bearings, etc. The impeller 5 is connected to the rotating end cap 403 through a wheel shaft, and the impeller 5 is located in the internal air flow channel 801 of the jet tube 4. The rotating end cap 403 is rotatably arranged on the jet tube 4 and has outlet ports 4031 arranged at intervals. It should be noted that a number of outlet ports 4031 are arranged in a divergent manner, and the impeller 5 is located in the jet tube 4 and is linked with the rotating end cap 403.

[0030] When the spiral air flow ejects from the jet tube 4, it impacts the impeller 5 to make it rotate. The rotation of the impeller 5 drives the rotating end cap 403 to rotate. As the rotating end cap 403 rotates, the position of the outlet port 4031 continuously changes, and the gas ejected from the outlet port 4031 also continuously changes direction, blowing the wall of the inner cavity 101 of the mold shell 1 from multiple angles. Further enhancing the blowing effect on the inner cavity 101 of the mold shell 1, and the gas blowing from multiple angles can ensure that all corners of the inner cavity 101 of the mold shell 1 can be effectively dried, avoiding the occurrence of drying dead corners, improving the comprehensiveness and uniformity of drying, and thus enhancing the drying quality of the mold shell 1.

[0031] In some examples, an air supply tank 6 is further included. The air supply tank 6 has a plurality of air supply ports 601 arranged at intervals. The air supply tank 6 is used to supply dry gas to the gas transmission pipe 3. There are a plurality of connecting pipes 7, and each connecting pipe 7 is arranged on an air supply port 601. The mounting seat 8 is detachably arranged on the connecting pipe 7. An air flow channel 801 is provided inside the mounting seat 8, and the gas transmission pipe 3 is communicated with the air flow channel 801.

[0032] For example, as Figure 1 shown, the air supply tank 6 is a sealed box body. A flow dividing device is arranged inside the air supply tank 6 to evenly distribute the input dry gas to each air supply port 601. One end of the connecting pipe 7 is hermetically connected to the air supply port 601, and the other end is connected to the mounting seat 8 by means of threads or the like. The mounting seat 8 is a plate-like structure, and the air flow channel 801 is machined inside the mounting plate. The gas transmission pipe 3 is docked with the air flow channel 801.

[0033] During air supply, an external air supply device inputs dry gas into the air supply tank 6. The flow dividing device in the air supply tank 6 evenly distributes the gas to each air supply port 601, and then enters the air flow channel 801 of the mounting seat 8 through the connecting pipe 7, and finally reaches the gas transmission pipe 3 to supply dry gas to the gas transmission pipe 3. It can not only realize the simultaneous drying operation of multiple mold shells 1, improve the working efficiency of the drying mechanism, but also meet the drying requirements of long cylindrical mold shells 1 in large-scale production. Moreover, the flow dividing structure of the air supply tank 6 ensures that the gas flow rate and pressure obtained by each gas transmission pipe 3 are relatively stable, which is beneficial to ensuring the consistency of the drying effect of each mold shell 1.

[0034] In some examples, the placement rack 2 is a grid structure. The placement rack 2 has a plurality of mesh holes 9. The placement rack 2 is divided into several layers from top to bottom, and the opening directions of the mold shells 1 located on the placement rack 2 are opposite.

[0035] For example, as Figure 1 and Figure 4 shown, the mold shells 1 placed in opposite directions can prevent the discharged moisture from entering the mold shell 1 again, and can improve the drying efficiency of the module. The grid-structured placement rack 2 can ensure the rapid drying of the outside of the mold shell 1.

[0036] In some examples, the outer wall of the mold shell 1 has an end face 103, and a limiting frame 10 is further included. The limiting frame 10 is arranged on the placement rack 2. The mold shell 1 abuts against the limiting frame 10 through the end face 103, and the limiting frame 10 is used to fix the mold shell 1.

[0037] For example, as Figure 4 shown, the limiting frame 10 is a U-shaped structure. The opening of the limiting frame 10 faces downward. The mold shell 1 is placed in the U-shaped groove, and the end face 103 contacts the inner wall of the limiting frame 10. The mold shell 1 is fixed in the limiting frame 10 to ensure the stability of the mold shell 1 during the drying process.

[0038] In the above solution, the limiting frame 10 can prevent the mold shell 1 from displacing during the drying process, ensuring the relative position between the gas delivery pipe 3 and the inner cavity 101 of the mold shell 1 is stable, enabling the drying gas to be accurately sprayed into the inner cavity 101 of the mold shell 1, and improving the stability and reliability of the drying effect. At the same time, problems such as collision damage that may be caused by the displacement of the mold shell 1 are avoided.

[0039] In some examples, it further includes a support rod 11, and the support rod 11 is arranged on the limiting frame 10; a fixing ring 12 is arranged on the support rod 11, and the gas delivery pipe 3 passes through the fixing ring 12, and the fixing ring 12 is used to support the gas delivery pipe 3.

[0040] For example, as Figure 4 shown, the support rod 11 is welded to the limiting frame 10, the fixing ring 12 is installed on the support rod 11 by means of welding or threaded connection, etc., and the gas delivery pipe 3 passes through the central hole of the fixing ring 12. Setting the fixing ring 12 on the support rod 11 can not only support the gas delivery pipe 3, but also assist the gas delivery pipe 3 to quickly enter the inner cavity 101 of the mold shell 1 during the pre-installation of the gas delivery pipe 3.

[0041] The fixing ring 12 provides support for the gas delivery pipe 3. During the drying process of the mold shell 1, it ensures the stable position of the gas delivery pipe 3, and it will not shake or displace due to the displacement of the mold shell 1. The stability of the gas delivery pipe 3 is improved, enabling the drying gas to be continuously and stably delivered to the inner cavity 101 of the mold shell 1, ensuring the smooth progress of the drying process. At the same time, problems such as gas leakage that may be caused by the shaking of the gas delivery pipe 3 are reduced, and the reliability of the drying mechanism is improved.

[0042] In some examples, the air supply tank 6 has a connection port 602, and the connection port 602 is externally connected to an air pump.

[0043] For example, as Figure 2 shown, the connection port of the air supply tank 6 is convenient for connecting with the output pipeline of the air pump. The air supply tank 6 has a connection port 602 for externally connecting an air pump. After the air pump dries the outside air, the dried gas is input into the air supply tank 6 through the connection port 602. It provides a stable gas source for the drying mechanism, and the air pump can adjust the pressure and flow rate of the output gas according to actual needs to meet the requirements for drying the mold shell 1 under different working conditions, ensuring the controllability of the drying effect.

[0044] In some examples, the gas delivery pipe 3 has a plug connector 302, and the gas delivery pipe 3 is inserted and installed on the mounting seat 8 through the plug connector 302.

[0045] For example, as Figure 3As shown, the connector 302 of the gas delivery pipe 3 adopts a conical structure, and a conical hole is correspondingly provided on the mounting seat 8. The connector 302 is inserted into the conical hole to achieve a tight connection. Align the connector 302 of the gas delivery pipe 3 with the connection hole on the mounting seat 8. After insertion, the gas delivery pipe 3 is connected to the internal air flow channel 801 of the mounting seat 8. This connection method is convenient and fast to install, facilitating the replacement or maintenance of the gas delivery pipe 3 during actual use. At the same time, the connector 302 can ensure the sealing performance of the connection, prevent gas leakage, and ensure that the dry gas can be smoothly delivered to the inner cavity 101 of the mold shell 1.

[0046] In some examples, the connecting pipe 7 is a telescopic pipe.

[0047] For example, as Figure 1 shown, the connecting pipe 7 adopts a telescopic structure such as a corrugated pipe. The two ends of the connecting pipe 7 are respectively connected to the air supply port 601 and the mounting seat 8. When it is necessary to adjust the position of the mounting seat 8 or the gas delivery pipe 3, the telescopic pipe can be extended or shortened according to actual needs to adapt to different installation and use scenarios. This increases the flexibility and adjustability of the drying mechanism, improves the adaptability of the drying mechanism to different working conditions, and expands its application range.

[0048] Referring to Figures 5 - 6 , in another embodiment of the present disclosure, the difference between this embodiment and the first embodiment is only that it further includes a fixing cylinder 13, the fixing cylinder 13 is detachably arranged on the air jet cylinder; a rotating body 14 is arranged on the wheel shaft of the impeller 5, and the rotating body 14 is located inside the fixing cylinder 13. After the impeller 5 rotates, it drives the rotating body 14 to rotate. There is a through groove 15 between the outer circumferential wall of the rotating body 14 and the inner wall of the fixing cylinder 13, and the through groove 15 is communicated with the main flow channel. A telescopic adjusting seat 16 is arranged on the rotating body 14, and the rotating body 14 is connected to the wheel shaft of the impeller 5 through the telescopic adjusting seat 16. The telescopic adjusting seat 16 is used to adjust the distance between the rotating body 14 and the wheel shaft of the impeller 5.

[0049] In the above solution, the fixing cylinder 13 can be installed on the air jet cylinder 4 by means of screwing or threaded connection. After the fixing cylinder 13 is installed, the telescopic adjusting seat 16 is installed on the wheel shaft of the impeller 5, and then the extending length of the telescopic adjusting seat 16 is manually adjusted. It should be noted that the telescopic adjusting seat 16 includes: two parallel rectangular plates, a screw rod is arranged between the two rectangular plates, a nut is arranged on the screw rod, and the distance between the two rectangular plates can be adjusted by adjusting the distance of the nut on the nut. And a central screw rod is fixedly arranged in the middle of one of the rectangular plates, the rotating body 14 is connected to the rectangular plate through the central screw rod, and an installation hole is also opened in the middle of the other rectangular plate, and this rectangular plate is connected to the wheel shaft through the installation hole.

[0050] By changing the distance between the rotating body 14 and the axle, the width of the through groove 15 can be changed. When the rotating speed of the rotating body 14 remains unchanged, when the spacing of the through groove 15 is small, the ejected drying gas is relatively dispersed, and when the through groove 15 is large, the ejected drying gas is relatively concentrated. In this way, the drying requirements of the inner cavity of the mold shell 1 with different depths can be met.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A drying mechanism for long cylindrical shell casting production, used for drying the mold shell (1), the mold shell (1) has an inner cavity (101), and is characterized in that, Including: A placement rack (2), on which the formwork shell (1) is arranged; An air delivery pipe (3) having an exhaust port (301), the exhaust port (301) extending into the inner cavity (101) of the formwork shell (1). The air delivery pipe (3) is used to convey dry gas into the inner cavity (101). There is a gap (102) between the outer wall of the air delivery pipe (3) and the inner wall of the inner cavity (101), and the gap (102) is used to discharge the moisture in the inner cavity (101); An air jet cylinder (4) detachably arranged on the exhaust port (301). The air jet cylinder (4) has a main flow channel (401), the main flow channel (401) communicating with the air delivery pipe (3). A spiral flow channel (402) is formed on the inner wall of the air jet cylinder (4). The inlet of the spiral flow channel (402) communicates with the air delivery pipe (3), and the outlet of the spiral flow channel (402) communicates with the main flow channel (401). The gas ejected from the spiral flow channel (402) mixes with the gas ejected from the main flow channel (401) to form a spiral air flow and is ejected into the inner cavity (101); 2. The drying mechanism for long barrel type casting shell production according to claim 1, characterized in that, Also including: A rotating end cover (403) rotatably arranged on the air jet cylinder (4), the rotating end cover (403) having a plurality of air outlet openings (4031) arranged at intervals; An impeller (5) rotatably arranged in the air jet cylinder (4), the impeller (5) being fixedly connected to the rotating end cover (403). After the spiral air flow drives the impeller (5) to rotate, the impeller (5) drives the rotating end cover (403) to rotate; 3. The drying mechanism for long-tube shell-making production according to claim 1, characterized in that, Also including: An air supply tank (6) having a plurality of air supply ports (601) arranged at intervals, the air supply tank (6) being used to supply dry gas to the air delivery pipe (3); A plurality of connecting pipes (7), each connecting pipe (7) being arranged on one of the air supply ports (601); A mounting seat (8) detachably arranged on the connecting pipe (7), the interior of the mounting seat (8) having an air flow channel (801), the air delivery pipe (3) communicating with the air flow channel (801); 4. A drying mechanism for long-barrel casting shell production according to claim 1, characterized in that, The placement rack (2) is a grid structure, the placement rack (2) having a plurality of mesh holes (9). The placement rack (2) is divided into several layers from top to bottom, and the opening directions of the formwork shells (1) located on the placement rack (2) are opposite; 5. The drying mechanism for long barrel type shell making in casting production according to claim 4, characterized in that, The outer wall of the formwork shell (1) has an end face (103). Also including: A limiting rack (10) arranged on the placement rack (2), the formwork shell (1) abutting against the limiting rack (10) through the end face (103), the limiting rack (10) being used to fix the formwork shell (1); 6. The drying mechanism for long-barrel casting shell production according to claim 5, characterized in that, Also including: A support rod (11) arranged on the limiting rack (10); A fixing ring (12) arranged on the support rod (11), the air delivery pipe (3) passing through the fixing ring (12), the fixing ring (12) being used to support the air delivery pipe (3); 7. The drying mechanism for long-tube casting shell production according to claim 2, wherein Also including: A fixing cylinder (13) detachably arranged on the air jet cylinder (4); A rotating body (14) is arranged on the axle of the impeller (5), and the rotating body (14) is located inside the fixed cylinder (13). After the impeller (5) rotates, it drives the rotating body (14) to rotate. There is a through groove (15) between the circumferential outer wall of the rotating body (14) and the inner wall of the fixed cylinder (13), and the through groove (15) communicates with the main flow channel (401).

8. A drying mechanism for long barrel type casting shell production according to claim 7, characterized in that, It further includes: A telescopic adjusting seat (16) is arranged on the rotating body (14). The rotating body (14) is connected to the axle of the impeller (5) through the telescopic adjusting seat (16), and the telescopic adjusting seat (16) is used to adjust the distance between the rotating body (14) and the axle of the impeller (5).

9. The drying mechanism for long barrel type casting shell production according to claim 3, characterized in that, The air delivery pipe (3) has a plug connector (302), and the air delivery pipe (3) is inserted onto the mounting seat (8) through the plug connector (302).

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