Split type combined vacuum tank body for multi-element co-permeation of super-long steel bars

Abstract

The application provides a split type combined vacuum tank body for multi-element co-permeation of super-long steel bars, which comprises a plurality of unit tanks, the unit tanks are sequentially connected to form a complete tank body, a female mouth and a male mouth matched with each other are arranged at the connection part of two adjacent unit tanks, the male mouth of one unit tank is inserted into the female mouth of another unit tank, and the male mouth and the female mouth are in interference fit; the end parts of the two unit tanks close to each other are provided with chucks, the two chucks are connected through a clamping ring, the clamping ring is wrapped outside the chucks, and the two chucks and the clamping ring are in interference fit. The application has the beneficial effects that: the unit tanks can be combined at will according to the length of the material, and the sealing property is considered at the same time. The split design reduces the transportation size, solves the transportation problem of the super-long tank, the female mouth and the male mouth structure realizes progressive double positioning, the female mouth and the male mouth connection mode can also effectively improve the sealing property of the tank mouth, and the unit tanks are connected through the chucks and the clamping ring, the two are in interference fit and clamped to be fixed, and the installation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of metal surface treatment, and in particular relates to a split-type combined vacuum tank for multi-element co-diffusion of ultra-long steel bars. Background Technology

[0002] To achieve multi-element alloy co-diffusion in steel materials such as wire rods, profiles, and strips, existing technologies have designed tanks located outside the steel. The steel is placed inside the tank and then fed into a heating furnace to complete the multi-element alloy co-diffusion. However, traditional tanks have the following problems:

[0003] Traditional tanks are too short to accommodate the processing of extra-long threaded steel bars. Furthermore, traditional tanks are often square or round. Square tanks are difficult to rotate, while round tanks are prone to causing the internal steel bars to become entangled.

[0004] Traditional tanks are mostly connected by flanges, which are difficult to position and complex to operate, making it difficult to achieve automated production. The bolts used for flange connections have a large shear force in the neck direction and are prone to breakage, posing a high risk of production accidents. In addition, traditional seals are basically made by sandwiching insulation cotton between the contact surfaces, which results in extremely poor sealing when the tank is deformed. Summary of the Invention

[0005] In view of this, the present invention aims to provide a split-type combined vacuum tank for multi-element co-diffusion of ultra-long steel bars, in order to solve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A split-type combined vacuum tank for multi-element co-diffusion of ultra-long steel bars includes multiple unit tanks, which are connected in sequence to form a complete tank.

[0008] The connection between two adjacent unit tanks is provided with a matching male and female port, and the female port of one unit tank is inserted into the female port of another unit tank, with the female port and female port having an interference fit.

[0009] Both adjacent ends of the two unit tanks are equipped with chucks, which are connected by a retaining ring. The retaining ring wraps around the outside of the chucks, and the two chucks are press-fitted with the retaining ring.

[0010] Furthermore, a spline is fixed on the outer wall of the female opening, and a groove corresponding to the spline is opened on the inner wall of the female opening, and the spline is inserted into the groove.

[0011] Furthermore, the outer wall of the female port and the inner wall of the female port are both conical structures, with the female port converging inward toward the end away from the unit tank and the female port converging inward toward the end adjacent to the unit tank.

[0012] Furthermore, the unit tank includes:

[0013] The inner liner has a polygonal structure;

[0014] The housing is a circular structure;

[0015] The shell is wrapped around the outside of the inner liner, and the shell and the inner liner are fixedly connected.

[0016] Furthermore, the sub-mouth extends from one end of the inner liner outwards from the outer shell;

[0017] The female opening is provided on the connector, and the connector is fixed to the end of the housing;

[0018] The inner liner of the unit tanks located at both ends is sealed at the end furthest from the connection point.

[0019] Furthermore, a vacuum valve is connected to the sealed end of the unit tank, with one end of the vacuum valve connected to the inner liner and the other end connected to the vacuum pump.

[0020] Furthermore, one end face of the chuck is an inclined plane, and the other end face is a flat plane, with the flat planes of the two chucks pressing against each other;

[0021] The inner walls of the retaining ring are respectively pressed against the inclined end faces of the two chucks on both sides.

[0022] Furthermore, an annular sealing groove is formed on the plane, and a sealing cavity is formed between the sealing grooves on the two planes that are pressed together. A graphite packing is provided in the sealing cavity, and the graphite packing is interference-fitted with the sealing cavity.

[0023] Furthermore, for two interconnected chucks, one is arranged around the outside of the female opening and the other is arranged around the outside of the female opening. When the female opening and the female opening are in an interference fit, the two chucks press against each other.

[0024] Furthermore, the side wall of the unit tank has multiple discharge ports, each discharge port is equipped with a sealing cover, the inner wall of the discharge port has an L-shaped groove, and the outer wall of the sealing cover is fixed with a slider corresponding to the L-shaped groove, the slider being located inside the L-shaped groove.

[0025] Compared with existing technologies, the split-type combined vacuum tank for multi-element co-diffusion of ultra-long steel bars described in this invention has the following beneficial effects:

[0026] It can be combined arbitrarily according to the length of the material, while also ensuring airtightness. The modular design reduces the transport size and solves the transportation problems of extra-long tanks;

[0027] The female-female joint structure enables dual positioning, ensuring coaxiality ≤0.1mm / m. This female-female joint connection method can also effectively improve the sealing performance of the tank opening.

[0028] The unit tank uses a chuck and snap ring connection. The chuck and snap ring are clamped and fixed by an interference fit, which is more efficient than the traditional flange connection method.

[0029] The polygonal inner liner and circular outer shell ensure that the tank can easily spin while the internal steel bars do not entangle with each other during the spinning process. Attached Figure Description

[0030] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of the vacuum tank according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the internal structure of the vacuum tank according to an embodiment of the present invention;

[0033] Figure 3 As described in the embodiments of the present invention Figure 1 Schematic diagram of the structure on the left side of point B;

[0034] Figure 4 As described in the embodiments of the present invention Figure 1 Schematic diagram of the structure on the right side of point B;

[0035] Figure 5 As described in the embodiments of the present invention Figure 1 Schematic diagram of the structure at point A in the middle;

[0036] Figure 6 As described in the embodiments of the present invention Figure 1 Schematic diagram of the cross-sectional structure at point B.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Unit tank; 11. Inner liner; 111. Female port; 112. Spline; 12. Shell; 13. Connector; 131. Female port; 132. Groove; 14. Chuck; 141. Sealing groove; 15. Snap ring; 16. Vacuum valve; 17. Discharge port; 171. Sealing cover. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] like Figure 1-6 As shown: A split-type combined vacuum tank for multi-element co-diffusion of ultra-long steel bars, comprising multiple unit tanks 1, wherein the multiple unit tanks 1 are connected in sequence to form a complete tank;

[0044] The connection between two adjacent unit tanks 1 is provided with a matching male and female port. The female port 111 of one unit tank 1 is inserted into the female port 131 of another unit tank 1, and the female port 111 and the female port 131 are interference fit.

[0045] Two unit tanks 1 are provided with chucks 14 at their adjacent ends. The two chucks 14 are connected by a retaining ring 15, which wraps around the outside of the chucks 14. The two chucks 14 and the retaining ring 15 are in an interference fit.

[0046] Multiple unit tanks 1 are interconnected to form a complete tank body, which can adapt to the processing of steel materials such as wire, profile, and strip with a length of ≥6m. The unit tanks 1 can be combined according to the length of the workpiece, making it highly adaptable.

[0047] A spline 112 is fixed on the outer wall of the female opening 111, and a groove 132 corresponding to the spline 112 is opened on the inner wall of the female opening 131, and the spline 112 is inserted into the groove 132.

[0048] The outer wall of the sub-port 111 and the inner wall of the mother port 131 are both conical structures, and the sub-port 111 is concave towards the end away from the unit tank 1, while the mother port 131 is concave towards the end adjacent to the unit tank 1.

[0049] By using the spline 112 and conical structure inside the male and female joints for double positioning, the coaxiality is ensured to be ≤0.1mm / m. This male and female joint connection method can also effectively improve the sealing performance of the tank opening.

[0050] The unit tank 1 includes:

[0051] Inner liner 11, wherein the inner liner 11 has a polygonal structure;

[0052] The housing 12 is a circular structure;

[0053] The shell 12 is wrapped around the outside of the inner liner 11, and the shell 12 is fixedly connected to the inner liner 11.

[0054] The sub-mouth 111 is formed by extending from one end of the inner liner 11 outwards from the shell 12;

[0055] The female opening 131 is provided on the connector 13, and the connector 13 is fixed to the end of the housing 12;

[0056] The inner liner 11 of the unit tank 1 located at both ends is sealed at the end away from the connection.

[0057] The combination of a circular shell 12 and a polygonal inner liner 11 effectively reduces the relative sliding and entanglement of the threaded steel workpiece inside the tank. The circular shell 12 solves the rotation problem, while the polygonal inner liner 11 solves the problems of threaded steel entanglement and relative sliding. Rotation increases the full contact and friction between the workpiece and the auxiliary material, reducing relative sliding. In this embodiment, the polygonal inner liner 11 is a hexagonal structure. The hexagonal inner liner 11 is easy to process, and the customization cost of the structural components is low.

[0058] In some embodiments, the inner liner 11 of the polygonal structure is provided with anti-entanglement and anti-slip ribs. The inner liner 11 can be replaced with an octagonal or other polygonal structure. It should be noted that the polygonal structure is at least pentagonal. A square inner liner 11 cannot solve the problem of threaded steel entanglement and relative sliding.

[0059] The sealed end of the unit tank 1 is connected to a vacuum valve 16. One end of the vacuum valve 16 is connected to the inner liner 11, and the other end is connected to the vacuum pump.

[0060] In some embodiments, provided that the tank is sealed, the inner liner 11 is connected to a vacuum flange, and the interface is a reinforced negative pressure sealing quick connector.

[0061] One end face of the chuck 14 is an inclined plane, and the other end face is a flat plane. The flat planes of the two chucks 14 are pressed together.

[0062] The inner walls of the retaining ring 15 are respectively pressed against the inclined end faces of the two chucks 14.

[0063] In some embodiments, the retaining ring 15 is composed of two arc-shaped structural members, one end of which is hinged to one end of another arc-shaped structural member, and the other end of the arc-shaped structural member is provided with a bolt, and the other end of the other arc-shaped member is provided with a nut corresponding to the bolt. The bolt and the nut are threadedly connected, and the inner walls of the two arc-shaped structural members press against the outer wall of the retaining ring 15.

[0064] The flange bevel and the inner bevel of the retaining ring 15 are used for connection. After clamping with an interference fit, it is fixed with a single bolt, which improves the installation efficiency by nearly 3 times compared with the traditional flange connection method.

[0065] An annular sealing groove 141 is formed on the plane, and a sealing cavity is formed between the sealing grooves 141 on the two planes that are pressed together. A graphite packing is provided in the sealing cavity, and the graphite packing is interference-fitted with the sealing cavity.

[0066] The inside of the flange has a graphite packing seal groove 141, which is similar to the tightening seal of a hydraulic seal ring, increasing the sealing effect.

[0067] For two interconnected chucks 14, one is arranged around the outside of the female port 111 and the other is arranged around the outside of the female port 131. When the female port 111 and the female port 131 are in an interference fit, the two chucks 14 are pressed against each other.

[0068] The side wall of the unit tank 1 has multiple discharge ports 17. A sealing cover 171 is provided inside the discharge port 17. An L-shaped groove is provided on the inner wall of the discharge port 17. A slider corresponding to the L-shaped groove is fixed on the outer wall of the sealing cover 171. The slider is located in the L-shaped groove.

[0069] When it is necessary to open the discharge port 17, the sealing cover 171 needs to be removed. By rotating the sealing cover 171, the slider on the outer wall of the sealing cover 171 slides. The slider first slides in the transverse part of the L-shaped groove until it enters the longitudinal part of the L-shaped groove and can no longer move. At this time, the sealing cover 171 is lifted, and the sealing cover 171 drives the slider to slide in the longitudinal part until the slider moves out of the L-shaped groove. When it is necessary to close the discharge port 17, the opening operation is performed in reverse.

[0070] In some embodiments, two methods are proposed to complete the temperature measurement inside the tank: one is to use a temperature measuring element (high temperature resistant) inside the tank to monitor the temperature inside the tank in real time by sending out signals; the other is to open a mirror hole on the side wall of the tank to measure the temperature by direct irradiation with infrared or laser light.

[0071] These two methods solve the problem that traditional temperature measurement methods, which mostly use contact thermocouples that probe 80-150mm into the furnace, cannot measure the temperature at the center of the tank, resulting in poor temperature measurement accuracy and consequently poor temperature control accuracy.

[0072] Furthermore, in order to solve the problems of small heat-conducting surface area, low heat conduction efficiency, and slow heat conduction of traditional tank metal, heat-conducting columns are evenly distributed in the cavity between the shell 12 and the inner liner 11 to increase the heat conduction area and improve the heat transfer efficiency.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0074] 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 within the protection scope of the present invention.

Claims

1. A split combined vacuum tank for multi-element co-permeation of super-long steel bars, comprising a plurality of unit tanks (1), the plurality of unit tanks (1) being sequentially connected to form a complete tank, characterized in that: a female-male joint is arranged at the connection between two adjacent unit tanks (1), a female joint (111) of one unit tank (1) is inserted into a male joint (131) of another unit tank (1), and the female joint (111) and the male joint (131) are in interference fit; a chuck (14) is arranged at the end of each of the two unit tanks (1), the two chucks (14) are connected through a clamping ring (15), the clamping ring (15) is wrapped outside the chucks (14), and the two chucks (14) and the clamping ring (15) are in interference fit; a spline (112) is fixed on the outer wall of the female joint (111), a spline groove (132) corresponding to the spline (112) is formed in the inner wall of the male joint (131), and the spline (112) is inserted into the spline groove (132); the outer wall of the female joint (111) and the inner wall of the male joint (131) are both in conical surface structure, the female joint (111) is tapered inward at the end away from the unit tank (1), and the male joint (131) is tapered inward at the end close to the unit tank (1); the unit tank (1) comprises: an inner container (11), the inner container (11) is in polygonal structure, and the polygonal structure is at least pentagonal; a shell (12), the shell (12) is in circular structure; the shell (12) is wrapped outside the inner container (11), and the shell (12) is fixedly connected with the inner container (11); one end face of the chuck (14) is beveled, the other end face is flat, the flat end faces of the two chucks (14) are tightly abutted against each other, and the end faces of the two chucks (14) that are beveled are tightly abutted against the inner wall of the clamping ring (15) on both sides; a ring-shaped sealing groove (141) is formed in the flat end face, a sealing cavity is formed between the sealing grooves (141) of the two flat end faces that are tightly abutted against each other, a graphite packing is arranged in the sealing cavity, and the graphite packing and the sealing cavity are in interference fit; the female joint (111) is formed by extending one end of the inner container (11) outward to the shell (12), the male joint (131) is formed in a connecting piece (13), and the connecting piece (13) is fixedly arranged at the end of the shell (12); the end of the inner container (11) of the unit tank (1) away from the connection is closed; a vacuum valve (16) is arranged at the closed end of the unit tank (1), one end of the vacuum valve (16) is communicated with the inner container (11), and the other end of the vacuum valve (16) is communicated with a vacuum pump; for the two chucks (14) that are connected to each other, one is arranged outside the female joint (111), and the other is arranged outside the male joint (131), when the female joint (111) and the male joint (131) are in interference fit, the two chucks (14) are tightly abutted against each other; a plurality of discharge ports (17) are formed in the side wall of the unit tank (1), a sealing cover (171) is arranged in each discharge port (17), an L-shaped groove is formed in the inner wall of each discharge port (17), a sliding block corresponding to the L-shaped groove is fixed on the outer wall of the sealing cover (171), and the sliding block is located in the L-shaped groove. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The split type combined vacuum can body for multi-element co-permeation of super-long steel bars according to claim 1, characterized in that: ​ ​ 3. The split vacuum can assembly for multi-element co-diffusion of ultra-long steel reinforcement according to claim 1, characterized in that: ​ 4. The split vacuum can assembly for multi-element co-diffusion of ultra-long steel reinforcement according to claim 1, characterized in that: ​ 5. The split vacuum can assembly for multi-element co-diffusion of ultra-long steel reinforcement according to claim 1, characterized in that: ​

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