Nickel plating apparatus for check valve production

Abstract

This utility model discloses a nickel plating apparatus for producing check valves, relating to the technical field of nickel plating equipment. It includes a solution tank with symmetrically arranged covers at its top. A support is mounted on the surface of the solution tank, and a threaded pipe is fixedly connected to the top of the support. A screw is threaded into the internal part of the threaded pipe, and mounting plates for installing check valves are circumferentially spaced on the surface of the screw. A connecting pipe is rotatably connected to the bottom of the support, and a first gear is connected to the surface of the connecting pipe. In this utility model, when the screw drives the check valve on the mounting plate to rotate and move up and down, it breaks the ion concentration gradient in the plating solution, ensuring a uniform distribution of the plating solution components. This prevents the plating layer from being too thick or too thin in localized areas of the check valve due to differences in plating solution concentration. Furthermore, the centrifugal force generated when the screw drives the check valve to rotate accelerates the removal of air bubbles from the surface, preventing air bubble residue from causing plating porosity or pitting, thus improving plating density and reducing the plating defect rate caused by air bubbles.

Description

Technical Field

[0001] This utility model relates to the field of nickel plating equipment technology, and in particular to a nickel plating device for the production of check valves. Background Technology

[0002] A check valve is a type of valve whose opening and closing element is a circular valve disc that relies on its own weight and the pressure of the medium to prevent backflow. It belongs to the category of automatic valves and is also known as a non-return valve, one-way valve, reflux valve, or isolation valve. The valve disc movement can be either lifting or swing. During manufacturing, check valves are nickel-plated primarily to improve corrosion resistance, enhance wear resistance, improve appearance, increase conductivity, and meet specific operating conditions. Currently, nickel plating equipment used in check valve production is divided into electrolytic nickel plating and chemical nickel plating. Chemical nickel plating mainly involves pre-treating the check valve, then placing the treated check valve into a solution tank for nickel plating, and finally cleaning and drying the nickel-plated check valve. However, currently, check valves are usually placed inside a frame before being placed into the solution tank for nickel plating. When the check valve is placed in the solution tank, it is in a static state. When the check valve is static, air bubbles easily adhere to the surface or inner cavity, forming plating pores, which leads to a decrease in plating density and corrosion resistance. Furthermore, when the check valve is static, the ion concentration gradient in the plating solution causes the edge plating to be too thick and the middle or inner cavity area plating to be too thin, resulting in insufficient plating thickness on the check valve sealing surface, affecting corrosion resistance and service life. Utility Model Content

[0003] This invention provides a nickel plating device for the production of check valves, which solves the problems in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A nickel plating apparatus for producing check valves includes a solution tank, the top of which is symmetrically provided with a cover.

[0006] The surface of the solution tank is provided with a support, and a threaded pipe is fixedly connected to the top of the support. A screw is threaded inside the threaded pipe, and mounting plates for installing check valves are arranged circumferentially at equal intervals on the surface of the screw.

[0007] The bottom end of the bracket is rotatably connected to a connecting pipe, and the surface of the connecting pipe is connected to a first gear. The top end of the bracket is equipped with a motor, and the output end of the motor is connected to a rotating rod, which passes through the bracket and is connected to a second gear.

[0008] As a further description of the above technical solution:

[0009] The surfaces of the second gear and the first gear are meshed.

[0010] As a further description of the above technical solution:

[0011] The screw has a groove on its surface, and a slider that is fixedly connected to the inner wall of the connecting pipe is slidably connected inside the groove.

[0012] As a further description of the above technical solution:

[0013] The mounting plate has a groove at its bottom end, and a threaded rod is rotatably connected to the inner wall of the groove. Connecting blocks that are slidably connected to the inner wall of the groove are threaded to both sides of the surface of the threaded rod, and a positioning rod is connected to one side of the connecting block.

[0014] As a further description of the above technical solution:

[0015] The threads on both sides of the threaded rod surface are arranged in opposite directions.

[0016] As a further description of the above technical solution:

[0017] Lifting cylinders connected to the bottom of the support are installed on both sides of the solution tank.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] In this invention, when the screw drives the check valve on the mounting plate to rotate and move up and down, it can break the ion concentration gradient in the plating solution, making the plating solution components evenly distributed. This avoids the plating layer being too thick or too thin in local areas of the check valve due to differences in plating solution concentration. Furthermore, the centrifugal force generated when the screw drives the check valve to rotate can accelerate the removal of air bubbles from the surface, preventing air bubble residue from causing plating pores or pits. This can improve the density of the plating layer and reduce the plating defect rate caused by air bubbles. Attached Figure Description

[0020] Figure 1 A schematic diagram of a nickel plating apparatus for the production of check valves;

[0021] Figure 2 This is a schematic diagram of the surface structure of the bracket in this utility model;

[0022] Figure 3 This is a schematic diagram of the screw surface structure in this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the mounting plate in this utility model.

[0024] Legend:

[0025] 1. Solution tank; 2. Cover; 3. Support; 4. Threaded pipe; 5. Screw; 6. Connecting pipe; 7. First gear; 8. Motor; 9. Rotating rod; 10. Second gear; 11. Mounting plate; 12. Slide groove; 13. Threaded rod; 14. Connecting block; 15. Positioning rod; 16. Cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-4 A nickel plating apparatus for producing check valves includes a solution tank 1, with symmetrically arranged covers 2 at the top of the solution tank 1; a support 3 is arranged on the surface of the solution tank 1, and a threaded pipe 4 is fixedly connected to the top of the support 3, with a screw 5 threaded inside the threaded pipe 4; mounting plates 11 for installing check valves are arranged circumferentially at equal intervals on the surface of the screw 5; a connecting pipe 6 is rotatably connected to the bottom of the support 3, and a first gear 7 is connected to the surface of the connecting pipe 6; a motor 8 is installed at the top of the support 3, and a rotating rod 9 is connected to the output end of the motor 8; the rotating rod 9 passes through the support 3 and is connected to a second gear 10. After the check valve is installed at the bottom of the mounting plate 11, the operation of the motor 8 can cause the rotating rod 9 to drive the second gear 10, the first gear 7, and the connecting pipe 6 to rotate. This allows the connecting pipe 6 to drive the screw 5 to rotate and move through the slider and the slide groove 12, so that the check valve at the bottom of the mounting plate 11 on the surface of the screw 5 can rotate and move. This can break the ion concentration gradient in the plating solution, making the plating solution components evenly distributed. At the same time, the centrifugal force generated when the check valve rotates can accelerate the removal of bubbles from the surface, avoiding bubble residue that causes plating porosity or pitting, improving the density of the plating layer and reducing the plating defect rate caused by bubbles.

[0028] Furthermore, the surfaces of the second gear 10 and the first gear 7 are meshed together, which facilitates the rotation of the rotating rod 9 and the second gear 10 by the motor 8, thereby enabling the first gear 7 connected to the surface of the second gear 10 to drive the connecting pipe 6 to rotate.

[0029] Furthermore, a groove 12 is provided on the surface of the screw 5, and a slider that is fixedly connected to the inner wall of the connecting pipe 6 is slidably connected inside the groove 12. This is to facilitate the screw 5 to rotate inside the threaded pipe 4 through the slider and the groove 12 when the connecting pipe 6 rotates. Since the screw 5 and the threaded pipe 4 are threadedly connected, the screw 5 can rotate and move inside the groove 12 through the slider, thereby enabling the check valve to rotate and move.

[0030] Furthermore, the bottom end of the mounting plate 11 is provided with a groove, and the inner wall of the groove is rotatably connected to a threaded rod 13. The two sides of the surface of the threaded rod 13 are respectively threaded with connecting blocks 14 that are slidably connected to the inner wall of the groove. A positioning rod 15 is connected to one side of the connecting block 14. The threaded rod 13 passes through the mounting plate 11 and is connected to a knob. The knob drives the threaded rod 13 to rotate, thereby allowing the connecting blocks 14 on both sides of its surface to move the positioning rod 15. The positioning rods 15 on both sides can be moved to the inside of the inlet and outlet of the check valve and limited thereto.

[0031] Furthermore, the threads on both sides of the threaded rod 13 are arranged in opposite directions, which is to facilitate the simultaneous movement of the connecting blocks 14 on both sides of the threaded rod 13 towards each other or in opposite directions when the threaded rod 13 rotates.

[0032] Furthermore, lifting cylinders 16 connected to the bottom of the support 3 are installed on both sides of the solution tank 1. This facilitates the up-and-down movement of the support 3 via the cylinders 16, so as to remove or move the mounting plate 11 on the surface of the screw 5 from the inside of the solution tank 1.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A nickel plating apparatus for producing check valves, comprising a solution tank (1), characterized in that: The top of the solution tank (1) is symmetrically provided with a cover (2); The surface of the solution tank (1) is provided with a support (3), and the top of the support (3) is fixedly connected with a threaded pipe (4), and the threaded pipe (4) is internally connected with a screw (5). The surface of the screw (5) is provided with mounting plates (11) for installing check valves at equal intervals in an annular shape. The bottom end of the bracket (3) is rotatably connected to a connecting pipe (6), and the surface of the connecting pipe (6) is connected to a first gear (7). The top end of the bracket (3) is equipped with a motor (8), and the output end of the motor (8) is connected to a rotating rod (9). The rotating rod (9) passes through the bracket (3) and is connected to a second gear (10).

2. The nickel plating apparatus for producing check valves according to claim 1, characterized in that: The surfaces of the second gear (10) and the first gear (7) are meshed.

3. The nickel plating apparatus for producing check valves according to claim 1, characterized in that: The screw (5) has a groove (12) on its surface, and a slider that is fixedly connected to the inner wall of the connecting pipe (6) is slidably connected inside the groove (12).

4. The nickel plating apparatus for producing check valves according to claim 1, characterized in that: The mounting plate (11) has a groove at its bottom end, and a threaded rod (13) is rotatably connected to the inner wall of the groove. The two sides of the surface of the threaded rod (13) are respectively threaded with connecting blocks (14) that are slidably connected to the inner wall of the groove, and a positioning rod (15) is connected to one side of the connecting block (14).

5. A nickel plating apparatus for producing check valves according to claim 4, characterized in that: The threads on both sides of the surface of the threaded rod (13) are arranged in opposite directions.

6. The nickel plating apparatus for producing check valves according to claim 1, characterized in that: Lifting cylinders (16) connected to the bottom of the bracket (3) are installed on both sides of the solution tank (1).

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