QPQ salt bath scum cleaning device and method

Abstract

The invention relates to the technical field of scum cleaning, in particular to a QPQ salt bath scum cleaning device and method. The device comprises an extraction pipe, an extraction pipe head, a locking cover, an extraction rod and an extraction rod head matched with the inner diameter of the extraction pipe head, the drawing pipe is in a thin cylinder shape and is opened at two ends; the drawing pipe head is in a conical barrel shape, openings are formed in the two ends of the drawing pipe head, and the large end of the drawing pipe head is connected with the first end of the drawing pipe. A through hole is formed in the center of the locking cover, and the locking cover is connected with the second end of the drawing pipe; the drawing rod is in a long rod shape, the diameter of the drawing rod is smaller than the inner diameter of the drawing pipe, the diameter of the drawing rod is in clearance fit with the inner diameter of the through hole, and the first end of the drawing rod penetrates through the through hole and is arranged in the drawing pipe in the axial direction of the drawing pipe; the drawing rod head is arranged in the drawing pipe, and the drawing pipe head is connected with the first end of the drawing pipe. According to the device, fine particle scum precipitated in salt bath liquid is effectively sucked into the suction pipe, and the cleaning efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of scum cleaning, and in particular to a QPQ salt bath scum cleaning device and method. Background Art

[0002] QPQ treatment technology has developed rapidly in China in recent years, thanks to its simple operation, fast nitriding speed and excellent performance of the surface of the treated parts. To ensure the excellent performance of the surface of the treated parts, the following key points must be controlled: the workpiece surface is clean, the composition of the nitriding furnace salt bath is accurately controlled, and the nitriding furnace salt bath is clean.

[0003] The first two points mentioned above have been well controlled by changing the workpiece cleaning process, regularly testing the cyanate concentration of the salt bath, and adding salt in time. However, the third point has long been a difficult problem. The reason is that the slag particles suspended in the salt bath are so fine that even with a filter screen of more than 300 mesh, only a small part is filtered out, and most of the rest are still suspended in the salt bath. The suspended slag has a very bad effect on the performance and appearance of the parts after QPQ treatment, which is manifested as severe looseness on the surface of the parts, even peeling and blistering, and a sharp decrease in wear resistance and corrosion resistance. Therefore, solving the slag removal problem in the QPQ nitriding salt bath is a key point to ensure product quality.

[0004] The existing patent CN109537610A describes a rapid cleaning device for sediment filter material in a precipitation well, which provides a cleaning tool with a T-shaped structure, and realizes rapid cleaning of sediment through manual operation. However, the device is mainly suitable for the precipitation well environment, and is not suitable for the specific environment and requirements of the QPQ salt bath furnace.

[0005] The existing patent CN210341035U proposes an online slag removal device for a nitriding salt bath furnace, which realizes online slag removal through a U-shaped tube and a vacuum pump, avoiding the low efficiency of the slag precipitation method of stopping the furnace to cool down. The device can remove slag without stopping the furnace, thereby improving production efficiency. However, the structure of the device is relatively complex and requires additional vacuum pump equipment, which may increase costs and operational difficulties.

[0006] In view of the limitations of the existing technology, it is urgent to provide a convenient and efficient QPQ salt bath scum cleaning device. Summary of the invention

[0007] The object of the present invention is to provide a QPQ salt bath scum cleaning device and method to solve the problem that the scum of the salt bath liquid of the nitriding furnace in the prior art is difficult to be removed conveniently and efficiently.

[0008] To achieve the above purpose, the following technical solution is adopted.

[0009] A QPQ salt bath scum cleaning device, comprising:

[0010] A suction tube, the suction tube is in the shape of a thin tube with two ends open;

[0011] The pipe-drawing head is in a conical cylindrical shape with openings at both ends, the large end of the pipe-drawing head is connected to the locking cover at the first end of the pipe, a through hole is provided in the center, and the locking cover is connected to the second end of the pipe;

[0012] A pumping rod, the pumping rod is in the shape of a long rod, the diameter of which is smaller than the inner diameter of the pumping tube, the diameter of the pumping rod is clearance-matched with the inner diameter of the through hole, the first end of the pumping rod passes through the through hole, and is arranged in the pumping tube along the axial direction of the pumping tube;

[0013] A pumping rod head matching the inner diameter of the pumping head, the pumping rod head is arranged in the pumping tube, and the pumping head is connected to the first end of the pumping tube.

[0014] Optionally, the second end of the pumping rod is a curved handle located outside the pumping tube.

[0015] Optionally, the locking cover is detachably connected to the first end of the pumping tube, and the first end of the pumping rod is detachably connected to the pumping rod head.

[0016] Optionally, the pipe drawing head is detachably connected to the pipe drawing tube.

[0017] Optionally, the angle between the pipe extraction head opening and the pipe extraction axis direction is adjustable.

[0018] Optionally, the small end of the pipette head is provided with an opening for sediment to enter.

[0019] Optionally, it also includes a power assembly for controlling the rapid insertion and withdrawal operation of the draw rod, and the power assembly is arranged at the second end of the draw tube.

[0020] A QPQ salt bath scum cleaning method, comprising:

[0021] S1. Control the temperature of the nitriding salt bath furnace to a predetermined temperature range, and maintain the predetermined temperature range for a certain period of time so that the slag is fully precipitated in the salt bath;

[0022] S2, immersing the first end of the suction tube into the nitriding salt bath furnace until it touches the bottom;

[0023] S3, pull up the pumping rod, so that the sediment flows into the pumping tube from the opening at the small end of the pumping head, and maintain this state for a predetermined time;

[0024] S5, lower the draw rod so that the draw rod head closes the tube draw head, and then lift the tube out of the nitriding salt bath furnace;

[0025] S6, move the suction pipe to the predetermined area, pull up the suction rod, and make the sediment flow out of the suction pipe head;

[0026] S7, repeating steps S2 to S6 until the salt bath solution sucked out from the nitriding salt bath furnace reaches a predetermined cleaning standard.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention can effectively suck fine particles of scum precipitated in the salt bath into the suction tube through the design of a thin cylindrical suction tube and a conical suction tube head, combined with the U-tube pressure principle, thereby significantly improving the cleaning efficiency. The adjustable design of the suction tube head opening angle enables the device to adjust the opening angle according to different sediment conditions and optimize the suction efficiency of the sediment. The detachable connection design between the suction tube head and the suction tube allows the replacement of suction tube heads of different specifications according to specific cleaning needs, thereby improving the adaptability and flexibility of the device. The design of the curved handle makes it easier for the operator to pull the suction rod, while reducing safety hazards during operation. The sediment entry opening set at the small end of the suction tube head helps to guide the sediment to flow more smoothly into the suction tube, thereby improving the sediment collection efficiency. The addition of the power component makes the insertion and extraction operations of the suction rod faster and more labor-saving, thereby significantly improving the efficiency of the cleaning work.

[0029] Through systematic operation steps, we ensure that each step can effectively achieve the predetermined goals, reduce the possibility of operational errors, and improve the overall cleaning effect.

[0030] By effectively cleaning the scum in the salt bath, the surface quality of the product after QPQ treatment is guaranteed, surface defects caused by scum residue are avoided, and the market competitiveness of the product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an embodiment of a QPQ salt bath scum cleaning device of the present invention.

[0032] Figure 2 This is a schematic diagram before cleaning of an embodiment of a QPQ salt bath scum cleaning method of the present invention.

[0033] Figure 3 It is a schematic diagram of a cleaning method for a QPQ salt bath scum according to an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram after cleaning of an embodiment of a QPQ salt bath scum cleaning method of the present invention.

[0035] Among them: 1. drawer rod; 2. locking cover; 3. drawer tube; 4. drawer tube head; 5. drawer rod head. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0037] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0038] Example 1

[0039] like Figure 1 As shown, a QPQ salt bath scum cleaning device mainly includes the following parts:

[0040] Suction tube 3: Suction tube 3 is a thin cylindrical tube made of corrosion-resistant material, such as stainless steel or other high temperature and corrosion-resistant alloy materials. The inner diameter of suction tube 3 is designed to be large enough so that the suction rod 1 can move smoothly inside it, and at the same time, ensure that there is enough space between suction tube 3 and suction rod 1 for sediment to enter smoothly. Both ends of suction tube 3 are open, the first end is connected to the conical suction head 4, and the second end is connected to the locking cover 2.

[0041] The pipe extraction head 4 is a conical cylindrical structure, with two openings at both ends. The large end is connected to the first end of the extraction tube 3, and the small end can be designed with an opening, which is a passage for the sediment to enter the extraction tube 3. The pipe extraction head 4 can be set to be angle-adjustable to adapt to salt bath furnaces of different shapes and sizes, ensuring that the pipe extraction head 4 can effectively contact the sediment at the bottom of the furnace.

[0042] Locking cover 2: The locking cover 2 is located at the second end of the pumping tube 3, and a through hole is provided in the center for passing the pumping rod 1. The connection between the locking cover 2 and the pumping tube 3 can be a threaded connection or other quick sealing connection method to ensure that the salt bath will not leak during operation. The design of the locking cover 2 also takes ventilation into consideration to ensure the pressure balance inside the pumping tube 3 and prevent the pumping rod 1 from being difficult to operate or the pumping head 4 from being blocked due to pressure difference.

[0043] Drawing rod 1: Drawing rod 1 is a long rod-shaped structure, and its diameter is smaller than the inner diameter of drawing tube 3, so as to ensure smooth movement inside drawing tube 3. The material of drawing rod 1 also needs to have the characteristics of high temperature resistance and corrosion resistance. The first end of drawing rod 1 passes through the through hole of locking cover 2, and is arranged in drawing tube 3 along the axial direction of drawing tube 3.

[0044] Withdrawing rod head 5: The inner diameter of the withdrawing rod head 5 matches that of the tube withdrawing head 4, and is disposed inside the tube withdrawing 3 to seal the tube withdrawing head 4 and prevent the sediment from leaking when the tube withdrawing 3 is pulled out. The material and design of the withdrawing rod head 5 must ensure a clearance fit with the tube withdrawing head 4, so that the withdrawing rod head 5 can be sealed and smoothly inserted and withdrawn during operation.

[0045] During operation, the first end of the suction tube 3 is immersed in the salt bath furnace until it touches the bottom. When the suction rod 1 is pulled up, the suction rod head 5 leaves the inner diameter of the suction head 4, forming a negative pressure, so that the sediment is sucked into the suction tube 3 through the small end opening of the suction head 4. In order to maintain the pressure balance inside the suction tube 3, the ventilation design of the suction tube 3 is necessary. This can be achieved by providing a vent hole in the locking cover 2 or the suction head 4, which is connected to the external atmosphere to balance the pressure inside and outside the suction tube 3, ensuring that the suction rod 1 can be smoothly inserted and pulled out, and preventing the suction head 4 from being blocked. After maintaining this state for a certain period of time, the suction rod 1 is lowered, so that the suction rod head 5 closes the suction head 4, and then the suction tube 3 is lifted out of the salt bath furnace. Move the suction tube 3 to the predetermined area, pull up the suction rod 1 again, and let the sediment flow out of the suction head 4. Repeat the above steps until the salt bath solution sucked out of the salt bath furnace reaches the predetermined cleaning standard.

[0046] As a specific example of the above embodiment, the second end of the pumping rod 1 of the QPQ salt bath scum cleaning device is designed with a curved handle located outside the pumping tube 3. The curved handle is made of durable engineering plastic or metal material, and its shape conforms to ergonomics so that the operator can have a comfortable grip when pulling the pumping rod 1. The inner wall of the handle is designed with grooves or protrusions to increase friction and prevent slipping during operation. The handle is located outside the second end of the pumping tube 3 and is fixedly connected to the second end of the pumping rod 1. The position design of the handle allows the operator to have a longer force arm when pulling the pumping rod 1, thereby reducing the required operating force.

[0047] The curved handle is fixed to the second end of the draw rod 1 by threaded connection, welding or bolt connection. This connection method ensures that the handle will not loosen or fall off during the drawing process, ensuring the stability and safety of the operation. During the operation, the operator can easily pull or push the draw rod 1 by holding the curved handle to achieve the movement of the draw rod 1 in the draw tube 3. The curved design of the handle allows effective operation even when space is limited.

[0048] The length, width and bending angle of the handle are designed according to actual operation requirements and ergonomic principles to ensure that the operator can effectively apply force at different angles and positions. This design not only provides a stable operation point, but also increases the convenience and comfort of operation, making the entire cleaning process more efficient and safer. The operator can save more effort when cleaning sediment, and also reduces the risk of equipment damage due to improper operation.

[0049] Through this specific implementation, the curved handle design at the second end of the pumping rod 1 of the QPQ salt bath scum cleaning device improves the convenience and safety of operation and makes the cleaning work more efficient.

[0050] As a preferred example of the above example, the locking cover 2 and the first end of the pumping tube 3 and the first end of the pumping rod 1 and the pumping rod head 5 are all detachably connected, and the connection between the locking cover 2 and the first end of the pumping tube 3 is achieved by a thread, which is both firm and easy to disassemble. The locking cover 2 is designed with a central through hole, the diameter of which is slightly larger than the diameter of the pumping rod 1, to ensure that the pumping rod 1 can pass through smoothly and maintain an appropriate gap to prevent leakage of the salt bath. When the pumping tube 3 needs to be maintained or replaced, the pumping tube 3 can be easily disassembled by unscrewing the locking cover 2, cleaning the interior or replacing worn parts.

[0051] The connection between the first end of the draw rod 1 and the draw rod head 5 is also detachable, and is connected by a thread or a quick buckle mechanism, which ensures the stability of the connection and allows for quick disassembly. This design allows the operator to quickly disassemble and replace the draw rod head 5 when it is worn or needs to be replaced according to different cleaning requirements, thereby improving maintenance efficiency and operational flexibility.

[0052] In actual operation, the detachable connection design of the pumping rod 1 and the pumping rod head 5 allows the pumping rod head 5 to be adjusted or replaced according to the specific shape of the salt bath furnace and the characteristics of the sediment to improve the cleaning efficiency. For example, different shapes and sizes of pumping rod heads 5 can be selected according to the size and density of the sediment to adapt to different cleaning scenarios.

[0053] In addition, the matching design of the inner diameter of the rod head 5 and the tube head 4 ensures that the rod head 5 can move freely in the tube 3 to achieve effective suction and discharge of sediment. This clearance fit design not only ensures smooth operation, but also avoids jamming or damage of the rod head 5 during operation.

[0054] The QPQ salt bath scum cleaning device provides an operating structure that is both stable and easy to maintain, making the cleaning work more efficient and safer. The operator can save more effort when cleaning the sediment, while also reducing the risk of equipment damage due to improper operation, ensuring the smooth progress of the cleaning process.

[0055] As a preferred example, the connection between the pipe-drawing head 4 and the pipe 3 is a threaded connection or a quick-release connection structure to achieve convenient disassembly and installation. The pipe-drawing head 4 is designed to be conical and adapted to the first end of the pipe 3 to ensure good sealing during connection and prevent leakage of the salt bath during the cleaning process. The external thread of the pipe-drawing head 4 matches the internal thread of the pipe 3, so that it can be firmly fixed during connection. At the same time, when replacement or maintenance is required, the operator only needs to rotate the pipe-drawing head 4 counterclockwise to easily disassemble it.

[0056] In a specific implementation, the material of the pipe head 4 should be selected from high temperature resistant and corrosion resistant alloys or plastics to adapt to the harsh conditions of the salt bath environment. The inner diameter of the pipe head 4 matches the inner diameter of the extraction tube 3 to ensure that the sediment can smoothly flow into the extraction tube 3 through the pipe head 4. The small end of the pipe head 4 is designed with an opening to facilitate the entry of the sediment, and the shape and size of the opening can be adjusted according to actual needs to improve the collection efficiency of the sediment.

[0057] In order to ensure the reliability of the connection, a sealing ring can be provided at the connection between the pipette head 4 and the pipette 3 to further enhance the sealing performance and prevent liquid leakage caused by pressure changes during operation. The material of the sealing ring should be high temperature resistant and corrosion resistant to ensure long-term use in a salt bath environment.

[0058] During operation, the operator can quickly replace the pipette head 4 as needed to meet different cleaning needs. For example, when the nature or size of the sediment changes, a pipette head 4 of different shapes or sizes can be selected to improve the cleaning effect. Through this detachable connection design, the QPQ salt bath scum cleaning device not only improves the cleaning efficiency, but also simplifies the maintenance and replacement process, making the entire cleaning work more efficient and safe.

[0059] As a preferred example, in order to achieve an adjustable angle between the opening of the pipe extraction head 4 and the axis direction of the pipe extraction tube 3, an angle adjustment mechanism is designed at the connection of the pipe extraction head 4. This mechanism can adopt a spherical joint, a universal joint or an angle-adjustable adapter component, allowing the pipe extraction head 4 to be adjusted within a certain angle range relative to the axis of the pipe extraction tube 3. Such a design enables the pipe extraction head 4 to adjust the opening direction according to different furnace types and slag distribution conditions to achieve the best slag suction effect.

[0060] In a specific implementation, the angle adjustment mechanism can be integrated into one or more locking devices, for example, a locking device operated by a knob or a wrench, so that the operator can adjust the angle of the pipette head 4 as needed and fix it in the desired position through the locking device. This design not only improves the adaptability and flexibility of the device, but also makes the operation easier and faster.

[0061] In addition, the material selection of the pipe head 4 should take into account the characteristics of high temperature resistance and corrosion resistance to adapt to the harsh environment of the salt bath furnace. Generally, the pipe head 4 can be made of stainless steel, special alloy or other high-performance engineering plastics to ensure stable performance during long-term use.

[0062] The pipette head 4 of the QPQ salt bath scum cleaning device can not only be quickly disassembled, but also the opening angle can be adjusted according to actual needs, making the cleaning work more efficient and accurate. This design improves the practicality and operational flexibility of the device, allowing the device to adapt to various working environments and conditions.

[0063] As a preferred example, a QPQ salt bath scum cleaning device, the small end of the pipette head 4 is provided with an opening for the sediment to enter. The pipette head 4 is designed as a conical structure, and its small end is specially provided with one or more openings, which are the channels for the sediment to enter the interior of the pipette head 4. The shape of the opening can be rectangular, circular or any other shape suitable for the sediment to pass through, and its size design should be able to effectively guide the sediment to enter, but not too large to affect the structural strength of the pipette head 4. The edge of the opening can be chamfered or rounded to reduce the resistance when the sediment enters.

[0064] The position and number of openings are optimized according to the distribution and cleaning requirements of the slag in the salt bath furnace. For example, if the slag is mainly deposited in the center area of ​​the furnace bottom, the opening can be designed at the center of the small end of the pipette head 4; if the slag is distributed more evenly, multiple openings can be evenly arranged around the small end of the pipette head 4 to improve the collection efficiency of the slag.

[0065] In practical applications, the operator can adjust the position and angle of the pipette head 4 according to the specific conditions of the salt bath furnace and the characteristics of the sediment, so that the opening faces the sediment accumulation area to achieve the best sediment collection effect. This design improves the adaptability and flexibility of the device, allowing the device to adapt to various working environments and conditions.

[0066] Through this specific implementation method, the QPQ salt bath scum cleaning device can effectively collect the sediment in the salt bath furnace, improve the cleaning efficiency, and at the same time ensure the convenience of operation and the durability of the equipment.

[0067] Example 2

[0068] A QPQ salt bath scum cleaning device also includes a power assembly for controlling the rapid insertion and withdrawal of a pumping rod 1 , wherein the power assembly is arranged at the second end of a pumping tube 3 .

[0069] The power assembly is designed as an electric or pneumatic device that can provide sufficient force and speed to achieve rapid insertion and withdrawal of the draw rod 1. The power assembly can be an electric motor, a cylinder or other suitable drive device, and the specific selection depends on the use environment and operation requirements. The output end of the power assembly is connected to the second end of the draw rod 1 to ensure that the power can be effectively transmitted to the draw rod 1.

[0070] In a specific implementation, the electric motor or the air cylinder of the power assembly is connected to the drawer rod 1 through a connecting rod or a transmission device. The electric motor can convert the rotational motion into the linear motion of the drawer rod 1 through gear transmission or belt transmission. The air cylinder controls the extension and retraction of the drawer rod 1 through air pressure to ensure that the drawer rod 1 can be inserted or pulled out quickly and smoothly.

[0071] The control system of the power assembly can be set on the operation panel of the device, and the operator can control the movement speed and direction of the pumping rod 1 through buttons or switches. The control system can be equipped with a speed regulation function, so that the operator can adjust the insertion and extraction speed of the pumping rod 1 according to the cleaning requirements to adapt to different sediment conditions.

[0072] Through this specific implementation, the power assembly of the QPQ salt bath scum cleaning device can significantly improve the operating efficiency of the pumping rod 1, reduce the labor intensity of the operator, and ensure the efficiency and safety of the cleaning process. The setting of the power assembly makes the entire cleaning work more automated, improving the modernization level of the device and user experience.

[0073] Example 3

[0074] A one-way valve module is provided at the first end of the suction pipe 3 or the suction pipe head 4 of the QPQ salt bath scum cleaning device to prevent the sediment from entering the suction pipe 3 and flowing back again when the suction rod 1 is reinserted. The design of this one-way valve module is intended to ensure the efficiency and reliability of the cleaning process.

[0075] The one-way valve module includes a valve body and a valve core, and the valve core can move freely in the valve body. When the draw rod 1 is pulled up, the valve core opens under the action of liquid pressure, allowing the sediment to flow into the draw tube 3 through the valve port. Once the draw rod 1 is put down, the valve core will automatically close to prevent the sediment from flowing out again when the draw rod 1 is inserted back. This design effectively avoids the problem of sediment backflow and ensures the continuity and effectiveness of the cleaning process.

[0076] The valve body of the one-way valve module can be made of corrosion-resistant materials such as stainless steel or special alloys to meet the requirements of the salt bath environment. The design of the valve core should take into account the flow characteristics of the fluid to ensure rapid response when opening and closing and reduce fluid resistance.

[0077] In the specific implementation, the installation position of the one-way valve module should be closely combined with the design of the pipette head 4 to ensure a stable connection between the valve body and the pipette head 4 to avoid leakage during operation. The connection between the valve body and the pipette head 4 can be threaded or quick-release structure for easy maintenance and replacement.

[0078] Through this design, the QPQ salt bath scum cleaning device can effectively prevent the reflux of sediment, improve the cleaning efficiency, ensure the cleanliness of the salt bath liquid, and thus improve the surface quality of the treated product. The setting of this one-way valve module provides greater convenience and reliability for the operation of the cleaning device.

[0079] Example 4

[0080] like Figure 2-Figure 4 As shown, a QPQ salt bath scum cleaning method, the specific implementation method is as follows:

[0081] First, adjust the temperature of the nitriding salt bath furnace to a predetermined temperature range, such as about 500°C, and maintain this temperature for at least two hours. This step ensures that the scum is fully precipitated in the salt bath, ready for subsequent cleaning work.

[0082] The first end of the suction pipe 3 of the cleaning device is slowly immersed in the nitriding salt bath furnace until it touches the bottom. Make sure that the small end opening of the suction pipe head 4 is located near the bottom of the furnace to effectively collect the sediment.

[0083] By operating the device, pull up the pumping rod 1, so that the opening of the small end of the pumping head 4 is opened, and the sediment flows into the pumping tube 3 under the pressure of the salt bath. Keep this state for a certain time, such as 10-30 seconds, to ensure that enough sediment is sucked into the pumping tube 3.

[0084] Put down the pumping rod 1, so that the pumping rod head 5 closes the pumping tube head 4 to prevent the sediment from leaking during the extraction process. Then, the pumping tube 3 is extracted from the nitriding salt bath furnace to ensure that the sediment in the pumping tube 3 will not be scattered.

[0085] The pipette 3 is moved to a predetermined area, for example, an area with a scald-proof waste box. The pumping rod 1 is pulled up again, so that the pumping rod head 5 leaves the pipette head 4, and the sediment just flows out from the pipette head 4 and falls into the waste box.

[0086] Repeat the above steps until the salt bath solution sucked out from the nitriding salt bath furnace reaches the predetermined cleaning standard. This step ensures that the scum in the salt bath is thoroughly cleaned to ensure the quality of the parts to be subsequently processed.

[0087] In specific implementation, the time and operation details of each step can be adjusted according to the actual salt bath furnace conditions and sediment characteristics. For example, the control of the furnace temperature can be fine-tuned according to the specific composition of the salt bath liquid and the furnace type to achieve the best precipitation effect. The immersion depth of the suction pipe 3 and the time for sucking the sediment can be optimized according to the amount and density of the sediment to improve the cleaning efficiency.

[0088] In addition, the temperature and cleanliness of the salt bath should be closely monitored during operation to ensure the cleaning effect. The cleanliness of the salt bath can be monitored by visual inspection or using sensors to ensure that the predetermined cleaning standards are met.

[0089] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A QPQ salt bath scum cleaning device, characterized in that: include: A suction tube (3), the suction tube (3) is cylindrical and has openings at both ends; A tube extraction head (4), the tube extraction head (4) is in a conical cylindrical shape, with openings at both ends, and the large end of the tube extraction head (4) is connected to the first end of the extraction tube (3); A locking cover (2) having a through hole at the center, wherein the locking cover (2) is connected to the second end of the suction tube (3); A draw rod (1), the draw rod (1) is in the shape of a long rod, the diameter of which is smaller than the inner diameter of the draw tube (3), the draw rod (1) is clearance-matched with the through hole, the first end of the draw rod (1) passes through the through hole, and the draw rod (1) is axially arranged in the draw tube (3); A pumping rod head (5) having an inner diameter matching that of the pumping tube head (4), wherein the pumping rod head (5) is arranged inside the pumping tube (3).

2. A QPQ salt bath scum cleaning device according to claim 1, characterized in that: The second end of the pumping rod (1) is a curved handle located outside the pumping tube (3).

3. A QPQ salt bath scum cleaning device according to claim 1, characterized in that: The locking cover (2) is detachably connected to the first end of the pumping tube (3), and the first end of the pumping rod (1) is detachably connected to the pumping rod head (5).

4. A QPQ salt bath scum cleaning device according to claim 1, characterized in that: The pipe extraction head (4) is detachably connected to the pipe extraction tube (3).

5. A QPQ salt bath scum cleaning device according to claim 1, characterized in that: The angle between the opening of the pipe extraction head (4) and the axial direction of the pipe extraction tube (3) is adjustable.

6. A QPQ salt bath scum cleaning device according to claim 1, characterized in that: The small end of the pipette head (4) is provided with an opening for the entry of sediment.

7. A QPQ salt bath scum cleaning device according to claim 1, characterized in that: It also comprises a power assembly for controlling the rapid insertion and withdrawal operation of the draw rod (1), wherein the power assembly is arranged at the second end of the draw tube (3).

8. A QPQ salt bath scum cleaning method, based on a QPQ salt bath scum cleaning device according to any one of claims 1 to 7, characterized in that: include, S1. Control the temperature of the nitriding salt bath furnace to a predetermined temperature range, and maintain the predetermined temperature range for a certain period of time so that the slag is fully precipitated in the salt bath; S2, immersing the first end of the suction tube (3) into the nitriding salt bath furnace until it touches the bottom; S3, pulling up the extraction rod (1), so that the sediment flows into the extraction tube (3) from the opening at the small end of the extraction tube head (4), and this state is maintained for a predetermined time; S5, lower the draw rod (1) so that the draw rod head (5) closes the tube draw head (4), and then lift the tube (3) out of the nitriding salt bath furnace; S6, moving the extraction tube (3) to a predetermined area, pulling up the extraction rod (1), and allowing the sediment to flow out of the extraction tube head (4); S7, repeating steps S2 to S6 until the salt bath solution sucked out from the nitriding salt bath furnace reaches a predetermined cleaning standard.

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