Gas dispersing and stirring device for salt bath nitriding
By using a gas dispersion and stirring device during the salt bath nitriding process, and utilizing the spiral design of the ventilation and disturbance components, the problem of uneven gas distribution was solved, thus achieving uniform stirring of the salt bath solution and improving the nitriding quality.
Patent Information
- Application Number
- CN202520455778.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-17
AI Technical Summary
In traditional salt bath nitriding, uneven gas distribution and solution mixing lead to uneven temperature and gas concentration in local areas, affecting the nitriding effect.
Design a gas dispersion and stirring device for salt bath nitriding. Through a venting component and a disturbance component, and by utilizing the spiral strips in several venting pipes and exhaust pipes, uniform gas distribution and spiral disturbance in the salt bath solution can be achieved.
This method achieves a more uniform gas distribution in the salt bath solution, improves nitriding quality, avoids problems of gas aggregation and uneven distribution, and ensures the uniformity and quality of the nitriding process.
Smart Images
Figure CN223813539U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to salt bath nitriding process technical field especially relates to a kind of for salt bath nitriding gas dispersion stirring device. BACKGROUND
[0002] Salt bath nitriding is a kind of heat treatment method commonly used in metal surface treatment, by immersing metal workpiece in nitrogen-containing molten salt bath, and by gas delivery system provides nitrogen, promotes nitrogen atom to penetrate on workpiece surface, to improve the hardness, wear resistance and corrosion resistance of workpiece surface.The process is widely used in the field of automobile, machinery manufacturing, aerospace etc.However, in the traditional salt bath nitriding process, the distribution of gas and the stirring of solution are key factors, which have important influence on nitriding effect.
[0003] The traditional stirring mode is generally through mechanical stirring, and the stirring effect of solution often exists local uneven condition, especially in deep or large size salt bath tank, the stirring effect is difficult to cover the whole solution, and uneven stirring can lead to the imbalance of local area temperature and gas concentration of solution, and further affect the gas diffusion and workpiece nitriding quality in nitriding process.
[0004] Therefore, it is necessary to design a kind of for salt bath nitriding gas dispersion stirring device to solve the above problems. INVENTION CONTENTS
[0005] The utility model overcomes the insufficient of prior art, provides a kind of for salt bath nitriding gas dispersion stirring device.
[0006] To achieve the above object, the technical scheme that the utility model adopts is as follows: a kind of for salt bath nitriding gas dispersion stirring device, comprising: salt bath tank, air supply component in the salt bath tank and the disturbance component communicated with the air supply component;
[0007] The air supply component includes: a plurality of air pipes, a connecting pipe communicated with a plurality of air pipes;A plurality of the air pipe is arranged in a ring, and the air pipe is provided with a plurality of gas outlets;
[0008] The disturbance component includes a plurality of exhaust pipes, and a plurality of spiral strips arranged in the exhaust pipe;A plurality of the spiral strip is fixedly connected with the inner wall of the exhaust pipe, and the spiral direction of the spiral strip in the exhaust pipe is consistent.
[0009] In a preferred embodiment of the utility model, gas guide pipe is fixed on the outer side of the salt bath tank, and the gas guide pipe is communicated with the connecting pipe.
[0010] In a preferred embodiment of the utility model, the spiral direction of the spiral strip in the exhaust pipe on the same air pipe is consistent, and the spiral direction of the spiral strip in the exhaust pipe on adjacent air pipe is opposite.
[0011] In a preferred embodiment of the utility model, the plurality of ventilation pipes arranged in a ring-in-ring manner are concentrically arranged with the salt bath tank.
[0012] In a preferred embodiment of the utility model, the salt bath tank contains a salt bath solution, and the ventilation assembly introduces nitrogen.
[0013] In a preferred embodiment of the utility model, the salt bath tank is provided with a supporting net above the disturbance assembly.
[0014] In a preferred embodiment of the utility model, the plurality of gas outlets are vertically upwardly arranged, and the gas outlets are concentrically arranged with the exhaust pipes.
[0015] In a preferred embodiment of the utility model, the diameter of the connecting pipe is smaller than the diameter of the ventilation pipe.
[0016] In a preferred embodiment of the utility model, the air guide pipe is in communication with an external air pump.
[0017] In a preferred embodiment of the utility model, the plurality of ventilation pipes arranged in a ring-in-ring manner, the number of exhaust pipes on the ventilation pipes at the outer ring position is smaller than the number of exhaust pipes on the ventilation pipes at the inner ring position.
[0018] The utility model solves the defects in the background art and has the following beneficial effects:
[0019] (1) The utility model provides a kind of for salt bath nitriding gas dispersion stirring device, by being provided with ventilation assembly and disturbance assembly, utilize several ventilation pipes and connecting pipe, by multiple gas outlets, nitrogen is introduced into exhaust pipe, and the spiral strip inside exhaust pipe is cooperated, so that gas discharge drives salt bath solution to be disturbed spirally, the disturbance of gas flow is combined with the spiral flow state of air flow, to realize more uniform gas distribution in salt bath solution, to avoid the problem that gas may appear in traditional device, it is helpful to the uniform stirring of salt bath solution.
[0020] (2) The utility model is by being provided with the spiral strip inside the exhaust pipe on adjacent ventilation pipe in opposite direction, air flow will be disturbed and dispersed to different areas of salt bath solution, so as to avoid gas aggregation in local area, so that the diffusion of gas is more uniform, so as to ensure that gas penetration in nitriding process is more uniform, improve nitriding quality, and gas is affected by spiral strip disturbance when passing through spiral strip, local aggregation phenomenon of bubble in solution is effectively controlled, the spiral strip of opposite direction of adjacent exhaust pipe further drives air flow dispersion, avoids excessive aggregation of bubble in the same area, so as to avoid the problem of local air flow unevenness. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.
[0022] Figure 1 is a perspective view of the preferred embodiment of the present application;
[0023] Figure 2 is a schematic view of the structure cooperation of the ventilation assembly and the disturbance assembly of the preferred embodiment of the present application;
[0024] Figure 3 is a schematic view of the disturbance assembly structure of the preferred embodiment of the present application;
[0025] In the figure: 1, salt bath tank; 2, ventilation pipe; 3, connecting pipe; 4, exhaust pipe; 5, spiral strip; 6, air guide pipe; 7, support net. DETAILED DESCRIPTION
[0026] The technical solutions of the embodiments of the present application will be described clearly and completely in the following description with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort fall within the scope of protection of the present application.
[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.
[0028] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0029] In the description of the present application, it needs to be understood that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.
[0030] As Figure 1 , Figure 2 and Figure 3 shown, a gas dispersion stirring device for salt bath nitriding, comprising: a salt bath tank 1, a ventilation assembly located in the salt bath tank 1, and a disturbance assembly in communication with the ventilation assembly;
[0031] The ventilation assembly comprises: a plurality of ventilation pipes 2, a connecting pipe 3 communicating the plurality of ventilation pipes 2; the plurality of ventilation pipes 2 are arranged in a nested manner, and the ventilation pipes 2 are provided with a plurality of gas outlets;
[0032] The disturbance assembly comprises a plurality of exhaust pipes 4, and a plurality of spiral strips 5 arranged inside the exhaust pipes 4; the plurality of spiral strips 5 are fixedly attached to the inner wall of the exhaust pipes 4, and the spiral direction of the spiral strips 5 inside the exhaust pipes 4 is consistent;
[0033] The salt bath solution is carried in the salt bath tank 1, and nitrogen gas is introduced into the ventilation assembly.
[0034] The nitrogen source is introduced into the salt bath tank 1 through the ventilation assembly, specifically, the nitrogen is uniformly introduced into the ventilation pipe 2 of the ring-in-ring structure through the connecting pipe 3, and then is introduced into the exhaust pipe 4 through the gas outlet position of the ventilation pipe 2, and then is spirally disturbed by the salt bath solution under the action of the plurality of spiral strips 5 in the exhaust pipe 4, so that the gas is discharged to drive the salt bath solution to be spirally disturbed, the disturbance of the gas flow is combined with the spiral flow state of the gas flow, and more uniform gas distribution in the salt bath solution is realized, so that the problems of gas aggregation or uneven distribution in the traditional device can be avoided, and the uniform stirring of the salt bath solution is facilitated.
[0035] In the utility model, the gas guide pipe 6 is fixed outside the salt bath tank 1, the gas guide pipe 6 is communicated with the connecting pipe 3, and the gas guide pipe 6 is communicated with the external gas pump.
[0036] The nitrogen source is introduced into the ventilation assembly through the gas guide pipe 6, so that the nitrogen can stably enter the ventilation assembly, the gas flow and pressure are controlled, and then the dispersion effect and stirring efficiency of the gas are controlled;
[0037] The gas guide pipe 6 is communicated with the external gas pump, the gas flow can be adjusted as required, and suitable nitrogen supply and stirring effect can be provided for different workpieces.
[0038] In the utility model, the spiral directions of the spiral strips 5 in the exhaust pipes 4 on the same ventilation pipe 2 are consistent, and the spiral directions of the spiral strips 5 in the exhaust pipes 4 on adjacent ventilation pipes 2 are opposite.
[0039] When the spiral directions of the spiral strips 5 in the plurality of exhaust pipes 4 are consistent, the vortex flow is generated when the gas passes, the flow speed in the local area is increased, the mixing effect of the solution is enhanced, and the problems that the temperature is uneven or the nitrogen permeation is uneven due to insufficient stirring of the salt bath solution in some areas are avoided;
[0040] The spiral directions of the spiral strips 5 in the adjacent exhaust pipes 4 are opposite, the flow directions of the salt bath solution and the nitrogen are alternately disturbed, the complexity of the flow is increased, the flow and mixing in the whole salt bath solution are promoted, and therefore the uniform stirring of the whole solution is ensured, that is, the gas flow is disturbed and dispersed to different areas of the salt bath solution by the opposite directions of the spiral strips 5, so that the gas aggregation in the local area is avoided, the diffusion of the gas is more uniform, the gas flow is disturbed by the spiral strips 5 when the gas passes through the spiral strips 5, the local aggregation phenomenon of the bubbles in the solution is effectively controlled, the spiral directions of the spiral strips 5 in the adjacent exhaust pipes 4 are opposite, the gas flow is further dispersed, the excessive aggregation of the bubbles in the same area is avoided, and therefore the problem of uneven local gas flow is avoided.
[0041] It should be noted that due to the disturbance effect and the staggered path of the salt bath solution and the nitrogen flow, the diffusion speed of the gas is accelerated, effectively increasing the contact area of the nitrogen and the salt bath solution, not only improving the nitriding efficiency, but also ensuring that the nitrogen can be more uniformly distributed in the solution, ensuring the consistency of the metal surface nitriding.
[0042] In the utility model, the plurality of air pipes 2 arranged in a ring-in-ring mode are arranged concentrically with the salt bath tank 1.
[0043] Through the annular concentric layout, the gas can be uniformly distributed along the annular path of the air pipe 2 into the salt bath solution, which helps to realize the uniform entry of the gas into the salt bath solution from multiple directions, improves the uniformity of the gas distribution, and avoids the phenomenon of excessive or insufficient gas flow at a certain position.
[0044] In the utility model, the support net 7 is installed in the salt bath tank 1 and located above the disturbance assembly.
[0045] The support net 7 plays a supporting role, avoids the deposition of workpieces or other solid materials at the bottom of the salt bath tank 1, and ensures the flowability of the salt bath solution and the smooth flow of the gas.
[0046] In the utility model, the plurality of gas outlets are vertically upwardly arranged, and the gas outlets are arranged concentrically with the exhaust pipes 4.
[0047] The vertically upwardly arranged gas outlets enable the nitrogen to be discharged from the exhaust pipes 4 in a vertical direction, which helps the gas to quickly rise and disperse in the salt bath solution, avoids the dead angle of the gas quickly contacting the solution after being discharged, and improves the interaction efficiency of the gas and the salt bath solution.
[0048] In the utility model, the diameter of the connecting pipe 3 is smaller than the diameter of the air pipe 2.
[0049] In the utility model, the plurality of air pipes 2 arranged in a ring-in-ring mode, the number of the exhaust pipes 4 on the air pipe 2 at the outer ring position is less than the number of the exhaust pipes 4 on the air pipe 2 at the inner ring position.
[0050] In use, the external nitrogen is uniformly introduced into the air pipes 2 arranged in a ring-in-ring mode through the connecting pipe 3, enters the exhaust pipes 4 through the gas outlet positions of the air pipes 2, and is combined with the salt bath solution in a spiral shape through the action of the plurality of spiral strips 5 in the exhaust pipes 4, so that the disturbance of the gas flow and the spiral flow state of the gas flow are combined, the gas is discharged to drive the salt bath solution to be disturbed in a spiral shape, when the directions of the spiral strips 5 in the plurality of exhaust pipes 4 are consistent, the gas generates vortex flow when passing through, and when the directions of the spiral strips 5 of the adjacent exhaust pipes 4 are opposite, the flow direction of the mixed salt bath solution and nitrogen is alternately disturbed,
[0051] The above is based on the ideal embodiment of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A gas dispersion and stirring device for salt bath nitriding, characterized in that, include: Salt bath (1), ventilation assembly located in the salt bath (1), and disturbance assembly in communication with the ventilation assembly; The ventilation assembly includes: a plurality of ventilation pipes (2), and a connecting pipe (3) connecting the plurality of ventilation pipes (2); the plurality of ventilation pipes (2) are arranged in a ring-like arrangement, and the ventilation pipes (2) have a plurality of air outlets. The disturbance component includes a plurality of exhaust pipes (4) and a plurality of spiral strips (5) disposed inside the exhaust pipes (4); the plurality of spiral strips (5) are fitted and fixed to the inner wall of the exhaust pipes (4), and the spiral strips (5) located inside the exhaust pipes (4) have the same spiral direction.
2. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: An air guide pipe (6) is fixed outside the salt bath tank (1), and the air guide pipe (6) is connected to the connecting pipe (3).
3. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: The spiral direction of the internal spiral strips (5) of the exhaust pipes (4) located on the same vent pipe (2) is consistent, while the spiral direction of the internal spiral strips (5) of the exhaust pipes (4) on adjacent vent pipes (2) is opposite.
4. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: The ventilation pipes (2) arranged in a ring-like arrangement are concentrically arranged with the salt bath tank (1).
5. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: The salt bath tank (1) contains a salt bath solution, and the ventilation component introduces nitrogen gas.
6. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: A support net (7) is installed inside the salt bath tank (1), and the support net (7) is located above the disturbance component.
7. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: Several of the air outlets are arranged vertically upwards, and the air outlets are concentrically arranged with the exhaust pipe (4).
8. The gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: The diameter of the connecting pipe (3) is smaller than the diameter of the vent pipe (2).
9. A gas dispersion and stirring device for salt bath nitriding according to claim 2, characterized in that: The air duct (6) is connected to an external air pump.
10. A gas dispersion and stirring device for salt bath nitriding according to claim 1, characterized in that: The ventilation pipes (2) are arranged in a ring-like arrangement, and the number of exhaust pipes (4) on the outer ring of the ventilation pipes (2) is less than the number of exhaust pipes (4) on the inner ring of the ventilation pipes (2).