Accurate temperature control pickling device for screw machining

Abstract

The utility model belongs to screw processing technical field especially relates to a precision temperature control pickling device for screw processing, include: pickling tank, the top of pickling tank is set in the open -mouthed shape, and the inside of tank wall of pickling tank is equipped with heating cavity, and the inner chamber of heating cavity is installed with temperature control assembly, the cleaning mechanism includes the arc bottom of W type structure in the bottom end of pickling tank inner chamber, and two pivot shafts are rotatably connected between the two end side walls of pickling tank inner chamber respectively, and the periphery of two pivot shafts is fixed with driving roller. The utility model is equipped with temperature control assembly to the pickling tank wall heating cavity, replaces direct heating with water bath temperature control, realizes acid liquor temperature control steady, pickling quality is consistent, the W type bottom of cleaning mechanism cooperates with double pivot shafts and is driven plate, prevents the accumulation of screw, stirs acid liquor and is even temperature to solve pickling uneven, and driven plate pushes screw automatic connection unloading again, eliminates artificial risk and improves efficiency, and cooperates with the unloading mechanism and realizes automatic unloading.

Description

Technical Field

[0001] This utility model belongs to the field of screw processing technology, and in particular relates to a precision temperature-controlled pickling device for screw processing. Background Technology

[0002] In the field of screw processing, pickling is a key pretreatment process for removing oxide layers, oil stains and processing residues from the screw surface. Its treatment effect directly affects the surface finish, rust prevention performance and subsequent assembly accuracy of the screw.

[0003] Currently, existing screw pickling equipment still has many technical shortcomings in practical applications: First, the temperature control design is not perfect. Most devices use simple tanks to directly heat the acid solution, which leads to fluctuations in acid temperature. This can cause excessive corrosion on the screw surface due to excessive temperature, or incomplete pickling due to excessively low temperature, making it difficult to ensure stable pickling quality. Second, common flat-bottomed pickling tanks or single stirring structures cannot achieve sufficient turning of screws and directional flow of acid solution. Screws are prone to accumulating in local areas at the bottom of the tank, resulting in insufficient contact between screws and acid solution in different locations and poor pickling uniformity. On the other hand, such structures lack a design adapted to the feeding path, and cannot use the power during the cleaning process to directionally transport screws to the discharge end. As a result, after pickling, screws remain in the accumulation area at the bottom of the tank and cannot automatically enter the feeding stage. They must be manually unloaded or dumped, which not only increases the safety risk of operators coming into contact with acid solution, but also reduces the efficiency of the overall pickling process due to manual intervention.

[0004] There is an urgent need for improvement, so we propose a precision temperature-controlled pickling device for screw processing. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a precision temperature-controlled pickling device for screw processing, thereby optimizing the pickling process and improving the shortcomings of existing devices.

[0006] In view of this, the present invention provides a precision temperature-controlled pickling device for screw processing, comprising: The pickling tank has an open top and a heating chamber inside the tank wall. The heating chamber is equipped with a temperature control component and is used to contain a heating medium. The temperature of the acid solution inside the pickling tank is controlled by a water bath heating method. The cleaning mechanism includes an arc-shaped bottom with a W-shaped structure located at the bottom of the inner cavity of the pickling tank, and two rotating shafts respectively rotatably connected between the side walls at both ends of the inner cavity of the pickling tank. A drive roller is fixed to the outer periphery of each of the two rotating shafts, and a lever plate is symmetrically fixed to the outer periphery of each of the two drive rollers. The axis of the drive roller is collinear with the curvature center of the arc-shaped bottom. The rotation of the lever plate drives the acid liquid to flow along the arc-shaped bottom and flips and pushes the screw. The unloading mechanism is installed at one end of the pickling tank and is used to unload the pickled screws.

[0007] Furthermore, the temperature control component includes three mounting holes at one end of the pickling tank, and all three mounting holes are connected to the inner cavity of the heating chamber. Each of the three mounting holes is threaded with a sealing post. One end of each of the two sealing posts on both sides is fixedly connected to a heating rod, and one end of the sealing post in the middle is fixedly connected to a temperature sensor. The two heating rods and the temperature sensor are placed in the inner cavity of the heating chamber through three through holes.

[0008] Furthermore, the feeding mechanism includes a notch at one end of the pickling tank and a feeding plate that is obliquely and fixedly connected to the end of the pickling tank near the notch. The feeding plate is inclined downwards towards the end away from the pickling tank, and the surface of the feeding plate near the pickling tank corresponds to the top of the arc-shaped bottom edge.

[0009] Furthermore, the actuating plate is provided with a plurality of first filter holes that penetrate the thickness direction of the actuating plate, and the end of the actuating plate away from the drive roller is provided with an arc-shaped protrusion that matches the curvature of the inner side of the arc bottom.

[0010] Furthermore, a collection box is fixedly connected to the bottom end of the feeding plate, and a plurality of second filter holes are opened on the feeding plate through its thickness direction, and the plurality of second filter holes are all connected to the inner cavity of the collection box.

[0011] Furthermore, a transparent observation window is fixedly connected to one side of the collection box, and a drain pipe is connected to the bottom of the collection box, with a control valve installed on the drain pipe.

[0012] Furthermore, it also includes a drive assembly, which includes a drive motor mounted at the end away from the perforation. The drive end of the drive motor rotates through the pickling tank and is connected to one of the rotating shafts. The ends of the two rotating shafts away from the drive motors rotate through the pickling tank and extend to the outside of the pickling tank. Sprockets are fixedly connected to the two rotating shafts on the outside of the pickling tank, and a chain meshes between the two sprockets.

[0013] Furthermore, a drive plate is fixedly connected to one outer end of each of the three sealing columns, and a hand-held plate is fixedly connected to the middle of one outer end of each drive plate.

[0014] Furthermore, baffles are fixedly connected to both sides of the surface of the feeding plate.

[0015] Furthermore, an exhaust valve is installed on one side of the top of the pickling tank, and the connection end of the exhaust valve is connected to the inner cavity of the heating chamber. A water injection hole is opened on the side of the pickling tank away from the exhaust valve, and a sealing cap is screwed into the water injection hole.

[0016] The beneficial effects of this utility model are: This application utilizes a heating chamber in the pickling tank wall, combined with a temperature control component, to indirectly control temperature via a water bath, eliminating the need for direct heating in existing tanks. This avoids localized temperature variations in the acid solution, achieving stable acid temperature control and consistent pickling quality. The W-shaped arc bottom of the cleaning mechanism, in conjunction with dual-shaft drive rollers and agitator plates, effectively flips the screws to prevent accumulation and stirs the acid solution for more uniform temperature, solving the problem of uneven pickling. Simultaneously, the agitator plates can push the screws towards the discharge end, allowing for seamless unloading without manual intervention. This eliminates the safety risks of manual material handling and improves process efficiency. Combined with the unloading mechanism, it directly receives the conveyed screws, enabling automatic unloading after pickling, comprehensively improving the functional deficiencies of existing devices. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a precision temperature-controlled pickling device for screw processing proposed in this utility model; Figure 2 This is a schematic diagram of the overall internal structure of a precision temperature-controlled pickling device for screw processing proposed in this utility model; Figure 3 This is an exploded view of the connection between the temperature control component and the pickling tank of a precision temperature-controlled pickling device for screw processing proposed in this utility model. Figure 4 This is an overall side view of a precision temperature-controlled pickling device for screw processing proposed in this utility model.

[0018] The markings in the diagram are as follows: 1. Pickling tank; 2. Rotating shaft; 3. Drive roller; 4. Actuating plate; 5. First filter hole; 6. Drive motor; 7. Sprocket; 8. Chain; 9. Notch; 10. Feeding plate; 11. Baffle; 12. Collection box; 13. Transparent observation window; 14. Drive disc; 15. Handheld plate; 16. Second filter hole; 17. Drain pipe; 18. Control valve; 19. Heating rod; 20. Temperature sensor; 21. Arc-shaped bottom; 22. Heating chamber; 23. Sealing column; 24. Perforation; 25. Exhaust valve; 26. Circulation pump; 27. Water outlet pipe; 28. Water suction pipe; 29. ​​Sealing cover. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0021] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0024] Reference Figures 1 to 4 A precision temperature-controlled pickling device for screw processing, comprising: Pickling tank 1 has an open top and a heating chamber 22 inside the tank wall. The heating chamber 22 is equipped with a temperature control component and is used to contain a heating medium (pure water). The temperature of the acid solution inside the pickling tank 1 is controlled by a water bath heating method. The cleaning mechanism includes an arc-shaped bottom 21 with a W-shaped structure located at the bottom of the inner cavity of the pickling tank 1, and two rotating shafts 2 respectively rotatably connected between the side walls at both ends of the inner cavity of the pickling tank 1. Drive rollers 3 are fixed on the outer periphery of the two rotating shafts 2, and actuating plates 4 are symmetrically fixed on the outer periphery of the two drive rollers 3. The two actuating plates 4 on the two drive rollers 3 are staggered, and the axis of the drive rollers 3 is collinear with the curvature center of the arc-shaped bottom 21. The rotation of the actuating plates 4 drives the acid liquid to flow along the arc-shaped bottom 21 and flips and pushes the screw. The unloading mechanism is installed at one end of the pickling tank 1 and is used to unload the pickled screws.

[0025] This application utilizes a heating chamber 22 within the pickling tank 1, combined with a temperature control component, to eliminate the need for direct heating of the acid solution in existing tanks. By leveraging the indirect temperature control characteristics of water bath heating, it avoids sudden temperature fluctuations in the acid solution, achieving stable temperature control and ensuring consistent pickling quality. Furthermore, the W-shaped arc-shaped bottom 21 of the cleaning mechanism works in conjunction with the dual rotating shafts 2, drive rollers 3, and agitator plate 4. On one hand, the arc-shaped structure, combined with the agitator plate 4 rotating with the drive rollers 3, effectively agitates the screws, preventing them from accumulating at the bottom of the tank. On the other hand, the rotation of the agitator plate 4 stirs the acid solution within the pickling tank, resulting in a more uniform acid temperature and solving the problem of uneven pickling. The problem of poor stability is addressed by the fact that the pushing action of the actuating plate 4 can drive the screws to move towards the discharge end, allowing for seamless connection of the unloading process without manual intervention. This eliminates the safety risks of manual material handling and improves process efficiency. Furthermore, the drive assembly drives the two rotating shafts 2 to rotate synchronously, ensuring coordinated action of the actuating plates 4 on both sides, further guaranteeing the stability of screw flipping and conveying. The unloading mechanism directly receives the screws conveyed by the cleaning mechanism, enabling automatic unloading after pickling and improving the functional defects of the existing device. Moreover, the two actuating plates 4 on the two drive rollers 3 are staggered, which can prevent the two actuating plates 4 on the two drive rollers 3 from interfering with each other and can also relay the screws for continuous conveying.

[0026] In the example of this application, the temperature control component includes three mounting holes opened at one end of the pickling tank 1, and all three mounting holes are connected to the inner cavity of the heating chamber 22. Each of the three mounting holes is threaded with a sealing post 23. One end of the two sealing posts 23 on both sides is fixedly connected to a heating rod 19, and one end of the sealing post 23 in the middle is fixedly connected to a temperature sensor 20. The two heating rods 19 and the temperature sensor 20 are respectively placed in the inner cavity of the heating chamber 22 through three through holes 24.

[0027] As a preferred example of this utility model, the three mounting holes communicating with the heating chamber 22 provide precise installation positions for the heating rod 19 and the temperature sensor 20. The threaded sealing post 23 inside the mounting hole can effectively block the leakage of the heating medium (pure water) in the heating chamber 22, avoiding medium loss and safety hazards caused by sealing defects. The layout of fixing the heating rod 19 with the sealing posts 23 on both sides and fixing the temperature sensor 20 with the sealing post 23 in the middle can make the heat generated by the heating rod 19 evenly transferred to the heating medium. At the same time, the temperature sensor 20 can sense the temperature of the heating medium in real time, forming a closed-loop temperature control for heating and monitoring, avoiding acid temperature fluctuations. In addition, the threaded sealing post 23 is easy to disassemble and assemble. When the heating rod 19 or the temperature sensor 20 needs to be maintained or replaced, it is not necessary to disassemble the entire pickling tank 1. The parts can be removed simply by rotating the sealing post 23, which greatly reduces the difficulty of maintenance.

[0028] In the example of this application, the feeding mechanism includes a notch 9 opened at one end of the pickling tank 1, and a feeding plate 10 that is inclined and fixedly connected to the end of the pickling tank 1 near the notch 9. The feeding plate 10 is inclined downward in the direction away from the end of the pickling tank 1, and the surface of the feeding plate 10 near the end of the pickling tank 1 corresponds to the top edge of the arc-shaped bottom 21.

[0029] As a preferred example of this utility model, the notch 9 at the end of the pickling tank 1 corresponds to the edge of the arc-shaped bottom 21, allowing the screw pushed by the actuating plate 4 in the cleaning mechanism to smoothly enter the notch 9. The transition from the cleaning chamber to the unloading structure can be completed without manual material removal, completely avoiding direct contact between the operator and the acid, eliminating safety risks. The inclined unloading plate 10 can guide the screw to be automatically conveyed downwards by gravity, achieving unloading without additional power, thereby improving unloading efficiency. At the same time, the correspondence between the end of the unloading plate 10 near the pickling tank 1 and the edge of the arc-shaped bottom 21 ensures that the screw will not be stuck at the bottom of the tank or the notch 9 during the conveying process, ensuring the continuity of the unloading process.

[0030] In the example of this application, the actuating plate 4 is provided with a plurality of first filter holes 5 that penetrate through the thickness direction of the actuating plate 4. The end of the actuating plate 4 away from the drive roller 3 is provided with an arc-shaped protrusion, which is adapted to the curvature of the inner side of the arc-shaped bottom 21. The diameter of the first filter hole 5 is smaller than the diameter of the pickling screw, so as to prevent the screw from getting stuck in the first filter hole 5.

[0031] As a preferred example of this utility model, the first filter hole 5 on the actuating plate 4 can reduce the resistance of the acid to the plate body when the actuating plate 4 rotates, avoiding the actuating plate 4 from getting stuck due to excessive acid resistance. At the same time, it does not affect the pushing action of the actuating plate 4 on the screw, ensuring the smooth flow of acid and the turning of the screw. It also prevents the actuating plate 4 from pushing a large amount of acid out with the screw, causing a large reduction in acid. In addition, the arc-shaped protrusion at the end of the actuating plate 4 matches the inner arc of the arc-shaped bottom 21, so that the actuating plate 4 can fit tightly against the surface of the arc-shaped bottom 21 when it rotates, preventing the screw from getting stuck in the gap between the actuating plate 4 and the bottom, ensuring that there are no screw residues at the bottom of the tank, and further improving the uniformity of pickling.

[0032] In the example of this application, a collection box 12 is fixedly connected to the bottom end of the feeding plate 10. The feeding plate 10 has a plurality of second filter holes 16 extending through its thickness direction, and the plurality of second filter holes 16 are all connected to the inner cavity of the collection box 12. The diameter of the second filter holes 16 is smaller than the diameter of the screw, so as to prevent the screw from getting stuck in the second filter holes 16 during feeding and affecting the feeding of the screw.

[0033] As a preferred example of this utility model, the second filter hole 16 on the feed plate 10 allows residual acid on the screw surface to drip into the collection box 12 below during the conveying process, avoiding direct dripping of acid onto the workbench and causing environmental pollution. At the same time, it enables the recycling of acid and reduces acid waste. Furthermore, the collection box 12 is designed to provide a dedicated space for residual acid, eliminating the need for additional liquid receiving devices, simplifying the layout of the work area, and maintaining a clean operating environment.

[0034] In the example of this application, a transparent observation window 13 is fixedly connected to one side of the collection box 12, and a drain pipe 17 is connected to the bottom of the collection box 12, and a control valve 18 is installed on the drain pipe 17.

[0035] As a preferred example of this utility model, the transparent observation window 13 on one side of the collection tank 12 allows the operator to visually view the amount of acid collected in the tank, avoiding overflow or empty tanks due to the inability to judge the liquid level, facilitating timely arrangement of acid recovery and treatment. In addition, the drain pipe 17 at the bottom of the collection tank 12, together with the control valve 18, can flexibly control the timing and speed of acid discharge according to actual needs, and the acid can be transferred without tilting the collection tank 12. The operation is convenient and can avoid acid spillage, further improving the safety and convenience of acid recovery.

[0036] In the example of this application, a drive assembly is also included, which includes a drive motor 6 mounted at the end away from the perforation 24. The drive end of the drive motor 6 rotates through the pickling tank 1 and is connected to one of the rotating shafts 2. The ends of the two rotating shafts 2 away from the drive motor 6 rotate through the pickling tank 1 and extend to the outside of the pickling tank 1. Sprockets 7 are fixedly connected to the two rotating shafts 2 on the outside of the pickling tank 1, and a chain 8 meshes between the two sprockets 7.

[0037] As a preferred example of this utility model, the drive motor 6 directly drives one of the rotating shafts 2 to rotate, while the other rotating shaft 2 follows the rotation via the sprocket 7 and chain 8. This transmission method can ensure that the rotation speeds of the two rotating shafts 2 are completely consistent, avoiding misalignment of the actuating plate 4 due to asynchronous driving on both sides, thereby preventing the screws from accumulating or getting stuck during the conveying process.

[0038] In the example of this application, a drive plate 14 is fixedly connected to one outer end of each of the three sealing posts 23, and a hand-held plate 15 is fixedly connected to the middle of one outer end of each drive plate 14.

[0039] As a preferred example of this utility model, the drive disc 14 on the outside of the sealing column 23 increases the force-bearing area during rotation, while the hand-held plate 15 on the drive disc 14 provides the operator with a convenient force-applying part, allowing the operator to rotate the drive disc 14 without the need for professional tools, thereby enabling the sealing column 23 to be screwed in and out. This greatly simplifies the disassembly and assembly process of the heating rod 19 and the temperature sensor 20. When a component malfunctions, the operator can quickly complete maintenance and replacement, reducing the downtime of the device.

[0040] In the example of this application, baffles 11 are fixedly connected to both sides of the surface of the feed plate 10.

[0041] As a preferred example of this utility model, the baffle 11 can form a lateral obstruction when the screw is conveyed along the inclined feeding plate 10, preventing the screw from falling to the ground from both sides of the feeding plate 10 due to fluctuations in conveying speed or differences in its own shape, reducing screw wear. At the same time, it eliminates the need for operators to frequently clean up fallen screws, reducing additional workload, ensuring the smoothness of the feeding process, and further improving the efficiency of the overall pickling process.

[0042] In the example of this application, an exhaust valve 25 is installed on the top side of the pickling tank 1, and the connection end of the exhaust valve 25 is connected to the inner cavity of the heating chamber 22. A water injection hole is opened on the side of the pickling tank 1 away from the exhaust valve 25, and a sealing cap 29 is screwed into the inner thread of the water injection hole.

[0043] As a preferred example of this utility model, the gas in the heating chamber 22 can be automatically discharged through the exhaust valve 25, avoiding the potential risk of gas accumulation leading to pressure increase and easy compression of the sealing structure causing medium leakage. In addition, the exhaust valve 25 maintains the pressure in the chamber within a safe range by actively relieving pressure, avoiding structural damage or heating medium leakage caused by pressure overload, improving the operational safety of the device. Furthermore, by rotating the sealing cover 29, it is convenient to add the medium into the heating chamber through the water injection hole.

[0044] It should be noted that a circulation pump 26 can be installed at the end of the pickling tank 1 away from the sprocket 7. The suction end and the outlet end of the circulation pump 26 are respectively connected to a suction pipe 28 and an outlet pipe 27. One end of the suction pipe 28 and the outlet end 27 both penetrate the pickling tank 1 and the inner cavity of the heating chamber 22. When the medium in the heating chamber 22 is heated, the circulation pump 26 can be started in conjunction with the suction pipe 28 and the outlet pipe 27 to circulate the medium in the heating chamber 22. This not only improves the heating efficiency of the medium, but also improves the uniformity of the heating of the medium, thereby improving the heating effect of the water area.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A precision temperature-controlled pickling device for screw processing, characterized in that, include: Pickling tank (1), the top of the pickling tank (1) is open, and a heating chamber (22) is provided inside the tank wall of the pickling tank (1), and a temperature control component is installed in the inner cavity of the heating chamber (22); The cleaning mechanism includes an arc-shaped bottom (21) with a W-shaped structure located at the bottom of the inner cavity of the pickling tank (1), and two rotating shafts (2) respectively rotatably connected between the side walls at both ends of the inner cavity of the pickling tank (1). The outer periphery of the two rotating shafts (2) is fixed with drive rollers (3), and the outer periphery of the two drive rollers (3) is symmetrically fixed with actuating plates (4). The unloading mechanism is installed at one end of the pickling tank (1) and is used to unload the pickled screws.

2. The precision temperature-controlled pickling device for screw processing according to claim 1, characterized in that, The temperature control component includes three mounting holes at one end of the pickling tank (1), and all three mounting holes are connected to the inner cavity of the heating chamber (22). Each of the three mounting holes is threaded with a sealing post (23). One end of each of the two sealing posts (23) on both sides is fixedly connected with a heating rod (19), and one end of the sealing post (23) in the middle is fixedly connected with a temperature sensor (20). The two heating rods (19) and the temperature sensor (20) are respectively placed in the inner cavity of the heating chamber (22) through three through holes (24).

3. The precision temperature-controlled pickling device for screw processing according to claim 2, characterized in that, The feeding mechanism includes a notch (9) at one end of the pickling tank (1) and a feeding plate (10) that is inclined and fixedly connected to the end of the pickling tank (1) near the notch (9). The feeding plate (10) is inclined downward in the direction away from the pickling tank (1), and the surface of the feeding plate (10) near the pickling tank (1) corresponds to the top edge of the arc-shaped bottom (21).

4. The precision temperature-controlled pickling device for screw processing according to claim 3, characterized in that, The actuating plate (4) has several first filter holes (5) that penetrate the thickness direction of the actuating plate (4). The end of the actuating plate (4) away from the drive roller (3) is set with an arc-shaped protrusion, which is adapted to the arc of the inner side of the arc bottom (21).

5. The precision temperature-controlled pickling device for screw processing according to claim 4, characterized in that, The bottom end of the feeding plate (10) is fixedly connected to a collection box (12). The feeding plate (10) has several second filter holes (16) that penetrate its thickness direction, and the several second filter holes (16) are all connected to the inner cavity of the collection box (12).

6. The precision temperature-controlled pickling device for screw processing according to claim 5, characterized in that, A transparent observation window (13) is fixedly connected to one side of the collection box (12), and a drain pipe (17) is connected to the bottom of the collection box (12), and a control valve (18) is installed on the drain pipe (17).

7. The precision temperature-controlled pickling device for screw processing according to claim 6, characterized in that, It also includes a drive assembly, which includes a drive motor (6) mounted at the end away from the perforation (24). The drive end of the drive motor (6) rotates through the pickling tank (1) and is connected to one of the rotating shafts (2). The ends of the two rotating shafts (2) away from the drive motor (6) rotate through the pickling tank (1) and extend to the outside of the pickling tank (1). Sprockets (7) are fixedly connected to the two rotating shafts (2) on the outside of the pickling tank (1), and a chain (8) meshes between the two sprockets (7).

8. The precision temperature-controlled pickling device for screw processing according to claim 7, characterized in that, Each of the three sealing columns (23) has a drive plate (14) fixedly connected to one side of its outer end, and each drive plate (14) has a hand-held plate (15) fixedly connected to the middle of one side of its outer end.

9. A precision temperature-controlled pickling device for screw processing according to claim 8, characterized in that, Both sides of the surface of the feed plate (10) are fixedly connected with baffles (11).

10. A precision temperature-controlled pickling device for screw processing according to claim 9, characterized in that, An exhaust valve (25) is installed on one side of the top of the pickling tank (1), and the connection end of the exhaust valve (25) is connected to the inner cavity of the heating chamber (22). A water injection hole is opened on the side of the pickling tank (1) away from the exhaust valve (25), and a sealing cap (29) is screwed into the water injection hole.

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