Piston rod pickling device

Abstract

The utility model discloses a piston rod pickling device, which belongs to the technical field of piston rod pickling devices and comprises a pickling tank, a pickling frame is slidably mounted in the pickling tank, an inclined mesh plate is fixed at the bottom of the pickling frame, a feed port is arranged on one side of the pickling frame, and a discharge port is arranged on the other side of the pickling frame. Through openings are symmetrically formed in the two sides of the pickling tank, and hydraulic cylinders are installed at the two ends of the pickling tank. The pickling tank, the pickling frame, the inclined screen plate, the feeding port, the discharging port, the through port, the hydraulic cylinder, the fixing plate, the hanging rod, the feeding hopper and the flow guide plate are used in cooperation, the pickling piston rod can be directly placed into the pickling tank through the feeding port, the piston rod does not need to be fixed through hanging, the pickling step of the piston rod is simplified, and the pickling efficiency is improved. And the inclined net plate is immersed in liquid for pickling more stably, the problems of falling of the piston rod and the like are avoided, and therefore the pickling efficiency and safety of the piston rod are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rod pickling devices, in particular to a piston rod pickling device. Background Art

[0002] The method of using acid solution to remove scale and rust on the surface of steel pipe is called pickling. Oxide of iron such as scale and rust reacts chemically with acid solution to form salts that dissolve in the acid solution and are removed. Acids used for pickling include sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, chromic acid, hydrofluoric acid and mixed acid, etc. The most commonly used are sulfuric acid and hydrochloric acid. The pickling process mainly includes immersion pickling, spray pickling and acid paste rust removal. At present, the immersion pickling method is mostly used in the processing process, that is, the steel pipe is hoisted and immersed in the pickling tank filled with acid solution.

[0003] For example, the utility model with application number 202123021675.9 discloses a high-hardness, corrosion-resistant piston rod pickling tank that is resistant to acid mist. First, it has a simple design, low cost, and is placed on the ground for easy maintenance and inspection; second, it is blocked by two layers of corrosion-resistant cloth to effectively prevent acid splashing caused by violent overflow of air when the steel pipe is immersed.

[0004] Similar to the above application, there are still some shortcomings:

[0005] The discharge steps of this acid mist-proof high-hardness and corrosion-resistant piston rod pickling tank are roughly the same as those of the ordinary pickling tank. First, it is very unsafe to hoist the piston rod into the pickling tank by lifting, and the lifting steps are complicated and difficult to operate. Secondly, lifting may cause problems such as falling off, causing hydrochloric acid to splash. Finally, the contact surfaces of the hoisted piston rods are not conducive to pickling work.

[0006] Therefore, a piston rod pickling device is designed to optimize the above problems. Utility Model Content

[0007] The main purpose of the utility model is to provide a piston rod pickling device to solve the related technical problems raised in the above background technology.

[0008] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0009] A piston rod pickling device comprises a pickling tank, wherein a pickling frame is slidably installed inside the pickling tank, an inclined mesh plate is fixed to the bottom of the pickling frame, an inlet is provided on one side of the pickling frame, and a discharge port is provided on the other side of the pickling frame, through openings are symmetrically provided on both sides of the pickling tank, hydraulic cylinders are installed at both ends of the pickling tank, fixed plates are fixed to the telescopic ends of the hydraulic cylinders, suspension rods are symmetrically arranged at the bottom of the fixed plates, and the bottom ends of the suspension rods are fixedly connected to the top of the pickling frame, a feed hopper is fixed to one side of the pickling tank, and the feed hopper is connected to the pickling tank through the through opening, and a guide plate is fixed to the bottom of the feed hopper.

[0010] Preferably, a discharge hopper is fixed on the other side of the pickling tank, a strainer is fixed inside the discharge hopper, and a reflux port is provided on one side of the pickling tank close to the discharge hopper.

[0011] Preferably, a fixing rod is symmetrically mounted on the top of the pickling frame, a sliding tube is evenly and slidably mounted on the outer side of the fixing rod, a shielding cloth is arranged between the sliding tubes, and a push handle is fixed on the outer side of the sliding tube.

[0012] Preferably, a grip block is fixed to the end of the push handle, and an anti-slip layer is provided on the outer side of the grip block.

[0013] Preferably, the inclined mesh plate is an anti-corrosion mesh, and the outer side of the inclined mesh plate is coated with an anti-corrosion coating.

[0014] Preferably, the height of the sluice net is lower than the height of the through opening, and the bottom of the discharge hopper is arranged as an inclined surface.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a piston rod pickling device, which can directly put the pickling piston rod into the pickling tank through the feed inlet through the pickling tank, without the need to use a hoist to fix the piston rod, and simplifies the steps of piston rod pickling. Moreover, it is more stable to immerse the piston rod in liquid pickling on the inclined mesh plate, and the problem of piston rod falling off is avoided, thereby improving the pickling efficiency and safety of the piston rod.

[0017] Through the coordinated use of the discharge hopper, the drain screen and the reflux port, the piston rod after pickling is driven by the hydraulic cylinder to exit the outlet and enter the drain screen, so that the pickling liquid on the surface of the piston rod is drained through the drain screen, and the pickling liquid returns to the pickling tank through the reflux port again, thereby reducing the waste of the pickling liquid and improving the utilization rate of the pickling liquid. At the same time, it can also block the splashing acid, further improve the safety of operation, and meet the production needs of the enterprise;

[0018] Through the coordinated use of the fixed rod, the sliding tube and the push handle, before pickling the piston rod, the staff first manually holds the push handle on the ground outside the pickling tank and walks forward along the pickling tank, thereby driving the sliding tube at one end of the shielding cloth to move, so that the shielding cloth is unfolded and shielded on the top of the pickling tank, and then the piston rod is placed in the pickling step, which can avoid the large outflow of acid mist or odor, and the staff can operate on the ground without climbing onto the tank surface, which is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 This is a front cross-sectional view of the utility model;

[0021] Figure 3 It is a schematic diagram of the connection between the fixing rod and the sliding pipe of the utility model.

[0022] In the figure: 1. pickling tank; 2. pickling frame; 3. inclined mesh plate; 4. feed port; 5. discharge port; 6. through port; 7. hydraulic cylinder; 8. fixed plate; 9. suspension rod; 10. feed hopper; 11. guide plate; 12. discharge hopper; 13. drain screen; 14. reflux port; 15. fixed rod; 16. slide pipe; 17. shielding cloth; 18. push handle. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] Embodiment 1

[0025] like Figure 1-Figure 3 As shown, the present embodiment provides a piston rod pickling device, comprising a pickling tank 1, a pickling frame 2 is slidably installed inside the pickling tank 1, an inclined mesh plate 3 is fixed to the bottom of the pickling frame 2, an inlet 4 is provided on one side of the pickling frame 2, a discharge port 5 is provided on the other side of the pickling frame 2, through openings 6 are symmetrically provided on both sides of the pickling tank 1, hydraulic cylinders 7 are installed at both ends of the pickling tank 1, fixed plates 8 are fixed to the telescopic ends of the hydraulic cylinders 7, suspension rods 9 are symmetrically provided at the bottom of the fixed plates 8, and the bottom ends of the suspension rods 9 are fixedly connected to the top of the pickling frame 2, a feed hopper 10 is fixed to one side of the pickling tank 1, and the feed hopper 10 is connected to the pickling tank 1 through the through opening 6, a guide plate 11 is fixed to the bottom of the feed hopper 10, a discharge hopper 12 is fixed to the other side of the pickling tank 1, a sludge net 13 is fixed inside the discharge hopper 12, and a reflux port 14 is provided on the side of the pickling tank 1 close to the discharge hopper 12.

[0026] The piston rod is placed on the inclined mesh plate 3 through the feed inlet 4. When the piston rod fills the inclined mesh plate 3, the hydraulic cylinder 7 is turned on to drive the fixed plate 8 and the suspension rod 9 to move the pickling frame 2 downward, so that the pickling frame 2 and the inclined mesh plate 3 with the piston rod are immersed in the hydrochloric acid liquid in the pickling tank 1. At the same time, the feed inlet 4 and the through hole 6 on the pickling frame 2 are staggered to avoid liquid splashing. The hydraulic cylinder 7 is started again to drive the fixed plate 8 to drive the pickling frame 2 to rise until the left end of the inclined mesh plate 3 is aligned with the through hole 6 on the left side of the pickling tank 1. The piston rod that has been pickled can be led out under the action of gravity. After the pickled piston rod is driven by the hydraulic cylinder 7 to lead out the through hole 6, it enters the drain net 13, so that the pickling liquid on the surface of the piston rod is drained through the drain net 13, and the pickling liquid returns to the pickling tank 1 through the reflux port 14 again.

[0027] Embodiment 2

[0028] In this embodiment, if Figure 1-Figure 3 As shown, a fixing rod 15 is symmetrically installed on the top of the pickling frame 2, a sliding tube 16 is evenly slidably installed on the outer side of the fixing rod 15, a shielding cloth 17 is arranged between the sliding tubes 16, and a push handle 18 is fixed on the outer side of the sliding tube 16.

[0029] Before pickling the piston rod, the staff manually holds the push handle 18 on the ground outside the pickling tank 1 and walks forward along the pickling tank 1, thereby driving the sliding tube 16 at one end of the shielding cloth 17 to move, so that the shielding cloth 17 is unfolded and shields the top of the pickling tank 1.

[0030] In this embodiment, a grip block is fixed to the end of the push handle 18, and an anti-slip layer is provided on the outer side of the grip block.

[0031] The provision of the grip block and the anti-slip layer facilitates the staff to manually grip the push handle 18, making the operation more convenient.

[0032] In this embodiment, the inclined mesh plate 3 is an anti-corrosion mesh, and the outer side of the inclined mesh plate 3 is coated with an anti-corrosion coating.

[0033] The anti-corrosion capability of the inclined mesh plate 3 is improved by using the anti-corrosion material, and the firmness thereof is enhanced.

[0034] In this embodiment, the height of the sluice net 13 is lower than the height of the through opening 6, and the bottom of the discharge hopper 12 is set as an inclined surface.

[0035] The inclined surface can be provided to allow the liquid on the piston rod after pickling to quickly flow to the reflux port 14 and enter the pickling tank 1, thereby reducing the drying of the acid liquid.

[0036] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A piston rod pickling device, characterized in that: The pickling tank (1) comprises a pickling frame (2) slidably mounted inside the pickling tank (1), an inclined mesh plate (3) being fixed at the bottom of the pickling frame (2), a material inlet (4) being provided on one side of the pickling frame (2), a material outlet (5) being provided on the other side of the pickling frame (2), through openings (6) being symmetrically provided on both sides of the pickling tank (1), hydraulic cylinders (7) being mounted at both ends of the pickling tank (1), a fixed plate (8) being fixed at the telescopic end of the hydraulic cylinder (7), suspension rods (9) being symmetrically arranged at the bottom of the fixed plate (8), and the bottom ends of the suspension rods (9) being fixedly connected to the top of the pickling frame (2), a feed hopper (10) being fixed at one side of the pickling tank (1), and the feed hopper (10) being connected to the pickling tank (1) through the through opening (6), and a guide plate (11) being fixed at the bottom of the feed hopper (10).

2. A piston rod pickling device according to claim 1, characterized in that: A discharge hopper (12) is fixed on the other side of the pickling tank (1), a sludge net (13) is fixed inside the discharge hopper (12), and a reflux port (14) is provided on a side of the pickling tank (1) close to the discharge hopper (12).

3. A piston rod pickling device according to claim 1, characterized in that: A fixing rod (15) is symmetrically mounted on the top of the pickling frame (2), a sliding tube (16) is evenly slidably mounted on the outer side of the fixing rod (15), a shielding cloth (17) is arranged between the sliding tubes (16), and a push handle (18) is fixed on the outer side of the sliding tube (16).

4. A piston rod pickling device according to claim 3, characterized in that: A grip block is fixed to the end of the push handle (18), and an anti-slip layer is provided on the outer side of the grip block.

5. A piston rod pickling device according to claim 1, characterized in that: The inclined mesh plate (3) is an anti-corrosion mesh, and the outer side of the inclined mesh plate (3) is coated with an anti-corrosion coating.

6. A piston rod pickling device according to claim 2, characterized in that: The height of the sluice net (13) is lower than the height of the through opening (6), and the bottom of the discharge hopper (12) is arranged as an inclined surface.

Images