Pickling solution sealing and filling device

Abstract

The utility model relates to the technical field of filling equipment, in particular to a pickling solution sealing and filling device. Comprising a pickling solution storage tank and a filling mechanism, and the filling mechanism comprises a rack, a lifting driver installed on the rack, a filling assembly installed on the lifting driver, a liquid inlet pipe and a communicating pipe. The filling assembly comprises a mounting frame fixedly connected with the lifting driver, a pressure pump fixedly mounted on the mounting frame, a filling pipeline fixedly mounted on the mounting frame, a cover plate mounted on the filling pipeline in an up-down sliding manner and a spring arranged on the filling pipeline in a sleeving manner, and the cover plate is elastically connected with the filling pipeline through the spring; one end of the communicating pipe extends into the upper part in the pickling solution storage tank, and the other end of the communicating pipe penetrates through the cover plate. The pickling solution filling device can be used for filling a large-diameter container with a pickling solution, the volatilization amount of acidic substances is effectively reduced while the filling efficiency is improved, and the pickling solution filling device is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of filling equipment, in particular to a sealed filling device for pickling liquid. Background Art

[0002] As we all know, pickling liquid is a liquid used to remove the oxide layer on the surface of metal products. The pickling liquid contains volatile acidic substances such as hydrochloric acid, and is often filled in a closed manner during filling operations.

[0003] For example, Chinese utility model patent CN216997637U discloses an automatic acidifier filling machine, which includes a base, a vertical pole fixedly connected to the top of the base, a limit device arranged on the top of the vertical pole, a connecting rod, a fixing rod fixedly connected to the other end of the connecting rod, a filling spray gun fixedly connected to the bottom of the fixing rod, a material pipe fixedly connected to the bottom of the filling spray gun, and a press-type valve device arranged at the bottom of the material pipe. It ensures that the acidifier will not flow out during the filling process, and can improve the filling efficiency of the acidifier in the production process.

[0004] However, the above filling machine has the following defects: the above device fills the pickling liquid into the small-diameter container through the filling spray gun. As the filling amount of the pickling liquid increases, the upper air in the small-diameter container is compressed, and the compressed air is mixed with a large amount of volatile acidic substances. When the filling spray gun is separated from the small-diameter container, the compressed air mixed with the acidic substances will be released outward, and even cause part of the pickling liquid to splash, posing a major safety hazard; and the pressure in the small-diameter container increases, affecting the subsequent injection smoothness of the pickling liquid and affecting the filling efficiency of the pickling liquid. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pickling liquid sealing filling device which can be used to fill large-caliber containers with pickling liquid, improves the filling efficiency and effectively reduces the volatilization amount of acidic substances, and is safer.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pickling liquid sealed filling device, comprising a pickling liquid storage tank and a filling mechanism, the filling mechanism comprising a frame, a lifting drive mounted on the frame, a filling assembly mounted on the lifting drive, a liquid inlet pipe and a connecting pipe, the filling assembly comprising a mounting frame fixedly connected to the lifting drive, a pressure pump fixedly mounted on the mounting frame, a filling pipe fixedly mounted on the mounting frame, a cover plate slidably mounted on the filling pipe up and down, and a spring sleeved on the filling pipe, the cover plate being elastically connected to the filling pipe through the spring; one end of the liquid inlet pipe extends into the bottom of the pickling liquid storage tank, the other end of the liquid inlet pipe is connected to the input end of the pressure pump, one end of the connecting pipe extends into the upper part of the pickling liquid storage tank, and the other end of the connecting pipe passes through the cover plate.

[0007] Furthermore, one end of the spring is connected to the cover plate, and the other end of the spring is connected to the upper part of the filling pipe; the liquid inlet pipe and the connecting pipe are both flexible plastic tubes, and the liquid inlet pipe and the connecting pipe have a lifting margin; the lifting drive can adopt a lifting cylinder or a lifting slide and other equivalent parts with lifting drive function.

[0008] Preferably, the filling pipeline includes a liquid supply pipe, a tee fixedly mounted on a mounting frame and two perfusion pipes, one end of the liquid supply pipe is connected to the output end of a pressure pump, the other end of the liquid supply pipe is connected to the bottom input end of the tee, the two perfusion pipes are respectively connected to the output ends on both sides of the tee, and the two perfusion pipes are symmetrically arranged on the cover plate; further, the perfusion pipe and the tee are made of corrosion-resistant pipes with a certain rigidity, such as hard PVC pipes.

[0009] Preferably, the filling pipeline also includes a venturi tube, an air suction pipe and a telescopic tube fixedly mounted on the mounting frame, one end of the venturi tube is connected to the liquid supply pipe, the other end of the venturi tube is connected to the bottom input end of the tee, one end of the air suction pipe extends into the throat of the venturi tube, the other end of the air suction pipe is connected to the output end of the telescopic tube, the input end of the telescopic tube passes through the cover plate and is fixedly connected to the cover plate; the telescopic tube adopts an acid-corrosion-resistant bellows.

[0010] Preferably, the liquid supply pipe is a U-shaped pipe, the liquid supply pipe is located at the bottom of the mounting frame, a vent pipe is installed at the bottom of the liquid supply pipe, and a vent valve is installed on the vent pipe.

[0011] Preferably, a flexible plastic ring is provided at the bottom of the cover plate; further, the flexible plastic ring is made of silicone material that is resistant to acid corrosion.

[0012] Preferably, it also includes a conveying mechanism for conveying open containers; further, the conveying mechanism can be a belt conveyor, a roller conveyor or a chain conveyor.

[0013] Preferably, the pressure pump is a metering pump.

[0014] Preferably, a scraper tube that fits with the perfusion tube is provided at the bottom of the cover plate.

[0015] Compared with the prior art, the utility model provides a sealed filling device for pickling liquid, which has the following beneficial effects: the sealed filling device for pickling liquid places an open container under a cover plate, a lifting drive drives the mounting frame to move downward, the cover plate contacts the top of the open container and seals the top port of the open container, and the output end of the filling pipeline extends below the middle of the open container, the pressure pump is started, the pressure pump pressurizes the pickling liquid in the pickling liquid storage tank and injects it into the open container, as the pickling liquid in the open container is filled, the air pressure in the upper part of the open container increases, and the air pressure in the upper part of the pickling liquid storage tank decreases due to the reduction of the pickling liquid, so that the air above the open container and some volatile acidic substances can enter the pickling storage tank, the air pressure in the open container can be balanced, the air pressure in the open container is basically kept constant during the filling process, and no air pressure interference is caused to the injection of the pickling liquid, the pickling liquid can be filled into large-diameter containers, the filling efficiency is improved, and the volatilization of the acidic substances is effectively reduced, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the top plan structure of the utility model.

[0018] Figure 3 The utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0019] Figure 4 The utility model Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] Figure 5 The utility model Figure 3 Schematic diagram of the partial enlarged structure at point C in the middle.

[0021] Markings in the attached drawings: 1. Pickling liquid storage tank; 2. Rack; 3. Lifting drive; 4. Liquid inlet pipe; 5. Connecting pipe; 6. Mounting frame; 7. Pressure pump; 8. Cover plate; 9. Spring; 10. Liquid supply pipe; 11. Tee; 12. Infusion pipe; 13. Venturi tube; 14. Suction pipe; 15. Telescopic pipe; 16. Vent pipe; 17. Vent valve; 18. Flexible plastic ring; 19. Conveying mechanism; 20. Scraper tube. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] Example 1

[0026] Please refer to Figures 1 to 4 A pickling liquid sealed filling device, comprising a pickling liquid storage tank 1 and a filling mechanism, the filling mechanism comprising a frame 2, a lifting drive 3 mounted on the frame 2, a filling assembly mounted on the lifting drive 3, a liquid inlet pipe 4 and a connecting pipe 5, the filling assembly comprising a mounting frame 6 fixedly connected to the lifting drive 3, a pressure pump 7 fixedly mounted on the mounting frame 6, a filling pipe fixedly mounted on the mounting frame 6, a cover plate 8 slidably mounted on the filling pipe and a spring 9 sleeved on the filling pipe, the cover plate 8 being elastically connected to the filling pipe through the spring 9; one end of the liquid inlet pipe 4 extends into the bottom of the pickling liquid storage tank 1, the other end of the liquid inlet pipe 4 is connected to the input end of the pressure pump 7, one end of the connecting pipe 5 extends into the upper part of the pickling liquid storage tank 1, and the other end of the connecting pipe 5 passes through the cover plate 8. It also includes a conveying mechanism 19 for conveying open containers; the conveying mechanism 19 can be a belt conveyor, a roller conveyor or a chain plate conveyor. The pressure pump 7 in this embodiment is preferably a metering pump.

[0027] One end of the spring 9 is connected to the cover plate 8, and the other end of the spring 9 is connected to the upper part of the filling pipe; the liquid inlet pipe 4 and the connecting pipe 5 are both flexible plastic pipes, and the liquid inlet pipe 4 and the connecting pipe 5 have a margin for lifting; the lifting drive 3 can adopt a lifting cylinder or a lifting slide or other equivalent parts with lifting drive function.

[0028] Please refer to Figure 5A flexible plastic ring 18 is provided at the bottom of the cover plate 8; further, the flexible plastic ring 18 is made of acid-resistant silicone. A scraper 20 is provided at the bottom of the cover plate 8 to fit the filling pipe 12; the bottom of the scraper 20 is in a conical groove shape, and the scraper 20 can scrape off the pickling liquid droplets attached to the outer wall of the filling pipe from the outer wall of the filling pipe.

[0029] In the pickling liquid sealed filling device provided in this embodiment, the conveying mechanism 19 can convey the open container to the bottom of the cover plate 8, and can also convey the open container filled with the pickling liquid to the next unit; after the pickling liquid is filled, the cover of the open container should be quickly sealed by an external manipulator or manually to reduce the volatilization of the pickling liquid; the metering pump can be used to measure the pumping amount of the pickling liquid to avoid overfilling or underfilling of the pickling liquid in the open container; and it is ensured that the filling amount of the pickling liquid in each open container is basically the same.

[0030] When the cover plate 8 and the open container are in a closed state, the gap between the cover plate 8 and the port of the open container is completely blocked by the action of the flexible plastic ring 18 to prevent the pickling liquid from evaporating outward during the filling operation; as the amount of pickling liquid filled in the open container increases, the lifting drive 3 drives the mounting frame 6 to move upward, and the filling pipeline moves upward synchronously, and the scraper 20 can scrape the pickling liquid droplets attached to the outer wall of the filling pipeline from the outer wall of the filling pipeline, and the pickling liquid droplets gathered at the bottom of the scraper 20 condense and drip into the open container under the action of gravity, so as to reduce the pickling liquid at the filling pipeline from dripping to the outside.

[0031] During the filling operation, as the liquid level of the pickling liquid in the open container moves up, the lifting drive 3 drives the mounting frame 6 to move up synchronously to avoid excessive immersion of the filling pipe in the pickling liquid in the open container, so as to reduce the adhesion of the pickling liquid to the outer wall of the filling pipe; it can also avoid excessive drop between the filling pipe and the pickling liquid level in the open container, so as to reduce splashing of the pickling liquid, thereby reducing the volatilization of the pickling liquid.

[0032] Example 2

[0033] The pickling liquid sealing and filling device provided in Example 1 is further optimized. For details, please refer to Figure 4 The filling pipeline includes a liquid supply pipe 10, a tee 11 fixedly mounted on the mounting frame 6, and two perfusion pipes 12. One end of the liquid supply pipe 10 is connected to the output end of the pressure pump 7, and the other end of the liquid supply pipe 10 is connected to the bottom input end of the tee 11. The two perfusion pipes 12 are respectively connected to the output ends on both sides of the tee 11, and the two perfusion pipes 12 are symmetrically arranged on the cover plate 8. Furthermore, the perfusion pipe 12 and the tee 11 adopt corrosion-resistant pipes with a certain rigidity, such as hard PVC pipes.

[0034] The filling pipeline of this embodiment also includes a venturi tube 13, an air suction pipe 14 and a telescopic tube 15 fixedly mounted on the mounting frame 6. One end of the venturi tube 13 is connected to the liquid supply pipe 10, and the other end of the venturi tube 13 is connected to the bottom input end of the tee 11. One end of the air suction pipe 14 extends into the throat of the venturi tube 13, and the other end of the air suction pipe 14 is connected to the output end of the telescopic tube 15. The input end of the telescopic tube 15 passes through the cover plate 8 and is fixedly connected to the cover plate 8; the telescopic tube 15 adopts an acid-corrosion-resistant bellows.

[0035] The liquid supply pipe 10 is a U-shaped pipe, and the liquid supply pipe 10 is located at the bottom of the mounting frame 6 . A vent pipe 16 is installed at the bottom of the liquid supply pipe 10 , and a vent valve 17 is installed on the vent pipe 16 .

[0036] The pickling liquid sealed filling device provided in this embodiment uses two filling pipes 12 to divert the pickling liquid, which can reduce the outflow velocity of the pickling liquid at the output end of the filling pipe 12, thereby reducing the impact force on the pickling liquid in the open container, thereby reducing the splashing and volatilization of the pickling liquid in the open container, and at the same time ensuring the smooth outflow of the output end of the filling pipe 12.

[0037] The cover plate 8 slides up and down along the two perfusion pipes 12, which can effectively prevent the cover plate 8 from rotating, thereby ensuring the stability of the up and down movement of the cover plate 8; when the pickling liquid flows through the venturi tube 13, a negative pressure is generated at the throat of the venturi tube 13, and part of the volatile acidic substances scattered in the upper part of the open container are sucked into the venturi tube 13 through the telescopic tube 15 and the connecting tube 5 and redissolved in the pickling liquid flowing through the venturi tube 13, thereby further reducing the content of volatile acidic substances in the upper part of the open container, and when the cover plate 8 is separated from the open container, the amount of acidic substances diffusing outward is reduced.

[0038] When the filling operation is completed and the filling pipe 12 is detached from the upper part of the open container, some of the acid wash liquid remaining in the metering pump can be temporarily stored in the U-shaped tube to reduce the acid wash liquid remaining in the filling pipe from dripping outward, and the residual acid wash liquid in the U-shaped tube can be drained through the vent pipe 16.

[0039] The use process of the pickling liquid sealing filling device provided by the utility model is as follows: the open container is sent to the bottom of the cover plate 8 by the conveying mechanism 19, the lifting drive 3 drives the mounting frame 6 to move down, the cover plate 8 contacts the top of the open container and blocks the top port of the open container, and the output end of the filling pipeline extends to below the middle of the open container, the pressure pump 7 is started, the pressure pump 7 pressurizes the pickling liquid in the pickling liquid storage tank 1 and injects it into the open container, at the same time, the lifting drive 3 drives the mounting frame 6 to move up synchronously, the filling pipe 12 gradually rises in the open container, and the cover plate 8 always blocks the upper part of the open container under the action of the spring 9, and stops running when the pressure pump 7 reaches the set filling amount, and the lifting drive 3 acts again until the cover plate 8 is out of contact with the open container and the bottom of the filling pipe 12 is located above the open container, the operator or the external manipulator covers the cover that fits the open container on the port of the open container, and the filled open container is conveyed to the next process equipment by the conveying mechanism 19.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A pickling liquid sealing filling device, characterized in that: It comprises a pickling liquid storage tank (1) and a filling mechanism, wherein the filling mechanism comprises a frame (2), a lifting drive (3) mounted on the frame (2), a filling assembly mounted on the lifting drive (3), a liquid inlet pipe (4) and a connecting pipe (5); The filling assembly comprises a mounting frame (6) fixedly connected to the lifting drive (3), a pressure pump (7) fixedly mounted on the mounting frame (6), a filling pipe fixedly mounted on the mounting frame (6), a cover plate (8) slidably mounted on the filling pipe, and a spring (9) sleeved on the filling pipe, wherein the cover plate (8) is elastically connected to the filling pipe via the spring (9); One end of the liquid inlet pipe (4) extends into the bottom of the pickling liquid storage tank (1), and the other end of the liquid inlet pipe (4) is connected to the input end of the pressure pump (7). One end of the connecting pipe (5) extends into the upper part of the pickling liquid storage tank (1), and the other end of the connecting pipe (5) passes through the cover plate (8).

2. A pickling liquid sealing and filling device according to claim 1, characterized in that: The filling pipeline comprises a liquid supply pipe (10), a tee (11) fixedly mounted on the mounting frame (6), and two filling pipes (12); one end of the liquid supply pipe (10) is connected to the output end of the pressure pump (7); the other end of the liquid supply pipe (10) is connected to the bottom input end of the tee (11); the two filling pipes (12) are respectively connected to the output ends on both sides of the tee (11); and the two filling pipes (12) are symmetrically arranged on the cover plate (8).

3. A pickling liquid sealing and filling device according to claim 2, characterized in that: The filling pipeline further comprises a venturi tube (13), an air suction tube (14) and a telescopic tube (15) fixedly mounted on the mounting frame (6); one end of the venturi tube (13) is connected to the liquid supply tube (10); the other end of the venturi tube (13) is connected to the bottom input end of the tee (11); one end of the air suction tube (14) extends into the throat of the venturi tube (13); the other end of the air suction tube (14) is connected to the output end of the telescopic tube (15); the input end of the telescopic tube (15) passes through the cover plate (8) and is fixedly connected to the cover plate (8).

4. A pickling liquid sealing and filling device according to claim 2 or 3, characterized in that: The liquid supply pipe (10) is a U-shaped pipe. The liquid supply pipe (10) is located at the bottom of the mounting frame (6). A vent pipe (16) is installed at the bottom of the liquid supply pipe (10), and a vent valve (17) is installed on the vent pipe (16).

5. The pickling liquid sealing and filling device according to claim 1, characterized in that: A flexible plastic ring (18) is provided at the bottom of the cover plate (8).

6. A pickling liquid sealing and filling device according to claim 1, characterized in that: Also included is a conveying mechanism (19) for conveying open containers.

7. The pickling liquid sealing and filling device according to claim 1, characterized in that: The pressure pump (7) is a metering pump.

8. The pickling liquid sealing and filling device according to claim 2, characterized in that: The bottom of the cover plate (8) is provided with a scraper tube (20) which fits with the perfusion tube (12).

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