A pickling device for hydraulic cylinder pipes

Abstract

This invention discloses an acid pickling device for hydraulic cylinder pipes, comprising an acid pickling tank and a base plate fixedly connected to one side of the acid pickling tank; a tank body and an L-shaped support are installed on the top of the base plate; the bottom inner wall of the acid pickling tank is provided with an inclined slope of 20° towards the L-shaped support; an acid delivery pump is installed on the top of the L-shaped support; and a motor is installed on the top of the tank body. This invention uses a motor to drive a long strip electromagnet to rotate metallic impurities in the hydrochloric acid solution, facilitating subsequent sorting and treatment of acid pickling residues. At the same time, a rotating primary filter screen intercepts oil stains in the solution. The combination of oil stain filtration and electromagnetic adsorption of metallic impurities enables the hydrochloric acid solution in the tank to be reused, reducing the cost of acid pickling hydraulic cylinder pipes.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder pickling technology, and more specifically, to a pickling device for hydraulic cylinder pipes. Background Technology

[0002] Acid pickling equipment for hydraulic cylinder pipes is used to clean and remove oxides and dirt from the inner surface of the pipes. Acid pickling helps improve the performance and lifespan of hydraulic systems. Traditional hydraulic cylinder acid pickling equipment typically consists of a corrosion-resistant tank, such as one made of stainless steel, that holds the acidic cleaning solution. The size and shape of the tank should be adapted to the dimensions of the hydraulic cylinder pipes, and an appropriately proportioned acidic solution, usually dilute nitric acid or hydrochloric acid, is used during pickling to remove oxides and dirt.

[0003] However, traditional pickling equipment produces a pickling solution containing a large amount of metal impurities and oil stains when pickling hydraulic cylinders. After pickling, the used pickling solution is directly discharged into the pickling waste liquid tank for waste liquid discharge treatment, while replacing it with a new pickling solution. This not only increases the cost of pickling hydraulic cylinder pipes, but also requires separate treatment of the metal impurities and oil stains in the discharged pickling waste liquid. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one object of the present invention is to provide an acid pickling device for hydraulic cylinder tubes. This acid pickling device can use a motor to drive an electromagnet to rotate in a hydrochloric acid solution to remove metal impurities. At the same time, a primary filter screen filters out oil stains. The hydrochloric acid solution can be reused, reducing acid pickling costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pickling treatment device for hydraulic cylinder pipes, comprising a pickling tank and a base plate fixedly connected to one side of the pickling tank; a tank body and an L-shaped support are installed on the top of the base plate; the bottom inner wall of the pickling tank is provided with an inclined slope with an inclination angle of 20° towards the L-shaped support; an acid delivery pump is installed on the top of the L-shaped support; a motor is installed on the top of the tank body; a connecting pipe is connected to one side inner wall of the pickling tank; one end of the connecting pipe is connected to the inside of the tank body; the inlet of the acid delivery pump is connected to the inside of the tank body through the pipe body; the outlet of the acid delivery pump is connected to the inside of the pickling tank through the pipe body; a rotating rod is fixedly connected to the rotating shaft of the motor; a plurality of elongated electromagnets are connected to the bottom end of the rotating rod in a circumferential arrangement; and a movable ring is fixedly connected to the end of the electromagnet away from the rotating shaft of the motor.

[0007] Preferably, a fixing ring is fixedly connected to the inner wall of the tank, and an annular groove is provided on the inner wall of the fixing ring. Two connecting rods are symmetrically slidably installed inside the annular groove. A connecting ring is fixedly connected to one end of the two connecting rods. The rotating rod passes through the connecting ring, and a brush is installed on each of the two connecting rods.

[0008] Preferably, two primary filters are symmetrically installed on the outer wall of the rotating rod, and the top and bottom of the primary filters are fixedly connected to annular brackets.

[0009] Preferably, the annular groove has several grooves distributed circumferentially inside, and a stop block is slidably installed inside the groove. A spring is fixedly connected to the bottom of the stop block, and one end of the bottom of the spring is fixedly connected to the inside of the groove.

[0010] Preferably, the bottom of the tank is connected to a discharge pipe, and a solenoid valve is installed on the discharge pipe.

[0011] Preferably, a mixing tank is provided on one side of the pickling tank, and a mixing pipe is connected to one side of the mixing tank, with one end of the mixing pipe penetrating through the mixing tank.

[0012] Preferably, the mesh size of the primary filter screen does not exceed 200 mesh.

[0013] Preferably, a rotary connector is installed at the center point of one end of the bottom of the rotating rod, and the electrical output end of the rotary connector is connected to the electrical input ends of several electromagnets respectively through wires.

[0014] Preferably, two support frames are symmetrically installed on the inner wall of the pickling tank.

[0015] Preferably, the outer wall of the pickling tank is fixedly connected with multiple reinforcing ribs.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses a motor to drive a long strip electromagnet to rotate metallic impurities in the hydrochloric acid solution, which facilitates the subsequent classification and treatment of pickling residues. At the same time, the rotating primary filter screen intercepts oil stains in the solution. The combination of oil stain filtration and electromagnetic adsorption of metallic impurities enables the hydrochloric acid solution in the tank to be reused, reducing the cost of hydraulic cylinder pipe pickling. In addition, after a large amount of metallic impurities are adsorbed on the surface of the electromagnet, the motor drives the electromagnet to rotate in the opposite direction, so that the surface of the electromagnet is repeatedly cleaned by a brush, thereby accelerating the removal of metallic impurities from the surface of the electromagnet. This not only facilitates the discharge of metallic impurities, but also eliminates the need to remove the electromagnet for surface cleaning, which is conducive to the continuous use of the electromagnet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pickling treatment device for hydraulic cylinder pipes according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the tank in the pickling treatment device for hydraulic cylinder pipes according to an embodiment of the present invention.

[0019] Figure 3 This is a top view of the pickling device for hydraulic cylinder pipes according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic cross-sectional view of the tank in the pickling device for hydraulic cylinder pipes according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the brush and electromagnet in the pickling device for hydraulic cylinder pipes according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the electromagnet and rotary connector in the pickling device for hydraulic cylinder pipes according to an embodiment of the present invention.

[0023] Figure 7 This is an embodiment of the present invention. Figure 5 A magnified structural diagram of part A in the middle;

[0024] Figure 8 This is a schematic diagram of the stop block and spring in the pickling device for hydraulic cylinder pipes according to an embodiment of the present invention.

[0025] In the diagram: 1. Pickling tank; 2. Frame; 3. Reinforcing rib; 4. Inclined slope; 5. Tank body; 6. Base plate; 7. L-shaped support; 8. Acid transfer pump; 9. Solenoid valve; 10. Discharge pipe; 11. Motor; 12. Mixing tank; 13. Mixing pipe; 14. Electromagnet; 15. Brush; 16. Fixed ring; 17. Moving ring; 18. Connecting rod; 19. Annular support; 20. Rotating rod; 21. Primary filter screen; 22. Connecting pipe; 23. Stop block; 24. Annular chute; 25. Rotary connector; 26. Connecting ring; 27. Spring. Detailed Implementation

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

[0027] Please see Figures 1-2 An embodiment of the present invention provides an acid pickling treatment device for hydraulic cylinder pipes, comprising: an acid pickling tank 1 and a base plate 6 fixedly connected to one side of the acid pickling tank 1.

[0028] In this embodiment, as Figures 1-3 As shown, a tank 5 and an L-shaped support 7 are installed on the top of the base plate 6. The bottom inner wall of the pickling tank 1 is provided with an inclined slope 4 with an inclination angle of 20° towards the L-shaped support 7. An acid transfer pump 8 is installed on the top of the L-shaped support 7. A motor 11 is installed on the top of the tank 5. A connecting pipe 22 is connected to one side inner wall of the pickling tank 1. One end of the connecting pipe 22 is connected to the inside of the tank 5.

[0029] During use, the hydraulic cylinder tube needs to be soaked in hydrochloric acid solution in pickling tank 1 to remove metal impurities and oil stains from the inner wall and surface of the metal tube. After pickling, the hydrochloric acid solution will contain precipitated metal impurities and oil stains, including metal impurities such as nickel, iron and chromium. The hydrochloric acid solution containing metal impurities and oil stains is guided by the inclined slope 4 at the bottom of the pickling tank 1 and enters the tank 5 through the connecting pipe 22.

[0030] Furthermore, refer to Figure 1 and Figure 4 The bottom of the tank 5 is connected to a discharge pipe 10, and a solenoid valve 9 is installed on the discharge pipe 10. When it is necessary to discharge the liquid and residue inside the tank 5, the solenoid valve 9 controls the discharge pipe 10 to open the channel for discharge.

[0031] In this embodiment, as Figure 2 , Figure 4 and Figure 5 As shown, the inlet of the acid transfer pump 8 is connected to the inside of the tank 5 through a pipe, and the outlet of the acid transfer pump 8 is connected to the inside of the pickling tank 1 through a pipe. The rotating shaft of the motor 11 is fixedly connected to a rotating rod 20. Several long strip electromagnets 14 are connected to the bottom end of the rotating rod 20 in a circumferential arrangement. The end of the electromagnet 14 away from the rotating shaft of the motor 11 is fixedly connected to a movable ring 17. Two primary filter screens 21 are symmetrically installed on the outer wall of the rotating rod 20. The top and bottom of the primary filter screens 21 are fixedly connected to annular brackets 19.

[0032] When the electromagnet 14 is in use, the motor 11 can drive the rotating rod 20 to rotate, which in turn drives several fixed electromagnets 14 and movable ring 17 fixed on the rotating rod 20 to rotate. The electromagnet 14 is long and thin, and the movable ring 17 can fix the ends of several electromagnets 14 to keep the electromagnet 14 stable when rotating. When the electromagnet 14 rotates, it is energized and activated, thereby adsorbing metal impurities in the hydrochloric acid solution that enters the tank 5, which facilitates the subsequent classification and treatment of pickling residues and can reduce the impurity content of the hydrochloric acid solution flowing into the tank 5.

[0033] When the rotating rod 20 rotates, it can drive the primary filter screen 21 to rotate. The primary filter screen 21 is made of activated carbon. The hydrochloric acid solution entering the tank 5 can effectively intercept oil stains in the solution through the stirring of the primary filter screen 21.

[0034] It should be noted that, based on the composition and magnetic affinity of the metallic impurities, the current-carrying rate of electromagnet 14 can be adjusted to more effectively adsorb metallic impurities.

[0035] In this embodiment, as Figures 5-7 As shown, a fixing ring 16 is fixedly connected to the inner wall of the tank body 5. The inner wall of the fixing ring 16 is provided with an annular groove 24. Two connecting rods 18 are symmetrically slidably installed inside the annular groove 24. A connecting ring 26 is fixedly connected to the opposite end of the two connecting rods 18. A rotating rod 20 passes through the connecting ring 26. A brush 15 is installed on both connecting rods 18.

[0036] Furthermore, refer to Figure 5 and Figure 8 The annular groove 24 has several grooves distributed circumferentially inside, and a stop block 23 is slidably installed inside the groove. A spring 27 is fixedly connected to the bottom of the stop block 23, and one end of the bottom of the spring 27 is fixedly connected to the inside of the groove.

[0037] When the electromagnet 14 rotates and attracts, it can drive the brush 15 and the connecting rod 18 installed on the surface of the electromagnet 14 to rotate in the annular groove 24. When the connecting rod 18 contacts the arc-shaped surface of the stop block 23, the stop block 23 is lowered into the groove. At this time, the brush 15 will not perform a cleaning action on the electromagnet 14.

[0038] When the motor 11 rotates in the reverse direction, the circuit of the electromagnet 14 is disconnected to demagnetize it. At the same time, the rotation of the electromagnet 14 can move the brush 15 and the connecting rod 18 covering the surface in the opposite direction to the vertical plane of the stop block 23. The stop block 23 cannot be subjected to downward squeezing force, thereby resisting the movement of the connecting rod 18. At this time, the surface is repeatedly cleaned by the brush 15 during the continuous rotation of the electromagnet 14.

[0039] like Figure 6 As shown, a rotary connector 25 is installed at the center point of one end of the bottom of the rotating rod 20. The electrical output end of the rotary connector 25 is connected to the electrical input end of several electromagnets 14 through wires. The rotary connector 25 can ensure that when the external wires are connected to the electromagnets 14 through the rotating rod 20, the wires will not be twisted or broken due to the rotation of the rotating rod 20.

[0040] like Figure 1 As shown, a mixing tank 12 is provided on one side of the pickling tank 1, and a mixing pipe 13 is connected to one side of the mixing tank 12. One end of the mixing pipe 13 passes through the mixing tank 12.

[0041] Specifically, two support frames 2 are symmetrically installed on the inner wall of the pickling tank 1, and multiple reinforcing ribs 3 are fixedly connected to the outer wall of the pickling tank 1. The support frames 2 can hold hydraulic cylinder pipes. The reinforcing ribs 3 can increase the overall load-bearing strength and bending resistance of the pickling tank 1.

[0042] Specifically, the primary filter 21 is selected as an activated carbon filter, and the mesh size does not exceed 200 mesh.

[0043] Based on the above technical solution, the working steps of this solution are summarized as follows: When using this invention, during the manufacturing process of the hydraulic cylinder tube, it is necessary to soak it in hydrochloric acid solution in pickling tank 1 to remove metal impurities and oil stains from the inner wall and surface of the metal tube. After pickling, the hydrochloric acid solution will contain precipitated metal impurities and oil stains. Among them, the metal impurities include metal impurities such as nickel, iron, and chromium. The hydrochloric acid solution containing metal impurities and oil stains is guided by the inclined slope 4 of the bottom inner wall of pickling tank 1 and enters the tank 5 through the connecting pipe 22.

[0044] At this time, the motor 11 can drive the rotating rod 20 to rotate, which in turn drives several fixed electromagnets 14 and movable rings 17 fixed on the rotating rod 20 to rotate. The electromagnets 14 are long strips, and the movable rings 17 can fix the ends of several electromagnets 14 to keep the electromagnets 14 stable when rotating. When the electromagnets 14 rotate, they are energized and start to adsorb metal impurities in the hydrochloric acid solution that enters the tank 5, which facilitates the subsequent classification and treatment of pickling residues and can reduce the impurity content of the hydrochloric acid solution flowing into the tank 5.

[0045] When the rotating rod 20 rotates, it can drive the primary filter screen 21 to rotate. The primary filter screen 21 is made of activated carbon and the pore size does not exceed 200 mesh. The hydrochloric acid solution entering the tank 5 can effectively intercept oil stains in the solution through the stirring of the primary filter screen 21. The oil stain filtration combined with electromagnetic adsorption of metal impurities can enable the hydrochloric acid solution in the tank 5 to quickly reach a state of secondary reuse. The filtered hydrochloric acid solution is discharged back into the pickling tank 1 through the acid transfer pump 8, so that the pickling treatment device has reusability and reduces the cost of hydraulic cylinder pipe pickling.

[0046] When the electromagnet 14 of the present invention rotates and attracts, it can drive the brush 15 and the connecting rod 18 installed on the surface of the electromagnet 14 to rotate in the annular groove 24. When the connecting rod 18 contacts the arc-shaped surface of the stop block 23, the stop block 23 is lowered into the groove. At this time, the brush 15 will not perform a cleaning action on the electromagnet 14.

[0047] When a thick layer of metallic impurities adheres to the surface of electromagnet 14, the motor 11 rotates in the reverse direction, disconnecting the circuit of electromagnet 14 to demagnetize it. Simultaneously, the rotation of electromagnet 14 moves the brush 15 and connecting rod 18 covering the surface in the opposite direction to the vertical plane of stop 23. Stop 23 is unable to withstand downward pressure, thus resisting the movement of connecting rod 18. During the continuous rotation of electromagnet 14, the surface is repeatedly cleaned by brush 15, thereby accelerating the removal of metallic impurities from the surface of electromagnet 14 and discharging them to the outside through discharge pipe 10. This not only facilitates the discharge of metallic impurities but also eliminates the need to remove electromagnet 14 for surface cleaning, which is beneficial for the continuous use of electromagnet 14.

[0048] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pickling treatment device for hydraulic cylinder pipes, comprising a pickling tank (1) and a base plate (6) fixedly connected to one side of the pickling tank (1), characterized in that: The bottom plate (6) is equipped with a tank (5) and an L-shaped bracket (7). The bottom inner wall of the pickling tank (1) is provided with an inclined slope (4) with an inclination angle of 20° towards the L-shaped bracket (7). The top of the L-shaped bracket (7) is equipped with an acid transfer pump (8). The top of the tank (5) is equipped with a motor (11). One side inner wall of the pickling tank (1) is connected to a connecting pipe (22). One end of the connecting pipe (22) is connected to the inner wall of the tank (5). The inlet of the acid transfer pump (8) is connected to the inside of the tank (5) through a pipe, and the outlet of the acid transfer pump (8) is connected to the inside of the pickling tank (1) through a pipe. The rotating shaft of the motor (11) is fixedly connected to a rotating rod (20). At one end of the bottom of the rotating rod (20), several long strip electromagnets (14) are connected in a circumferential arrangement. At one end of the electromagnet (14) away from the rotating shaft of the motor (11), a movable ring (17) is fixedly connected. Two primary filters (21) are symmetrically installed on the outer wall of the rotating rod (20) along the axial direction. The primary filters (21) are activated carbon filters. The top and bottom of the primary filters (21) are fixedly connected with ring brackets (19).

2. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: The inner wall of the tank (5) is fixedly connected to a fixing ring (16), and the inner wall of the fixing ring (16) is provided with an annular groove (24). Two connecting rods (18) are symmetrically slidably installed inside the annular groove (24). A connecting ring (26) is fixedly connected to one end of the two connecting rods (18). The rotating rod (20) passes through the connecting ring (26). A brush (15) is installed on each of the two connecting rods (18).

3. The pickling device for hydraulic cylinder pipes according to claim 2, characterized in that: The annular groove (24) has several grooves distributed circumferentially inside, and a stop block (23) is slidably installed inside the groove. A spring (27) is fixedly connected to the bottom of the stop block (23), and one end of the bottom of the spring (27) is fixedly connected to the inside of the groove.

4. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: The bottom of the tank (5) is connected to a discharge pipe (10), and a solenoid valve (9) is installed on the discharge pipe (10).

5. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: A mixing tank (12) is provided on one side of the pickling tank (1), and a mixing pipe (13) is connected to one side of the mixing tank (12), with one end of the mixing pipe (13) penetrating the mixing tank (12).

6. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: The mesh size of the primary filter (21) does not exceed 200 mesh.

7. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: A rotary connector (25) is installed at the center point of one end of the bottom of the rotating rod (20). The electrical output end of the rotary connector (25) is connected to the electrical input end of several electromagnets (14) through wires.

8. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: Two support frames (2) are symmetrically installed on the inner wall of the pickling tank (1).

9. The pickling device for hydraulic cylinder pipes according to claim 1, characterized in that: The outer wall of the pickling tank (1) is fixedly connected with multiple reinforcing ribs (3).

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