Adjustable pipe pickling and passivation device

Abstract

The utility model relates to pipeline treatment technical field, specifically disclose adjustable pipeline pickling passivation device, including pickling tank, circulating pump, liquid inlet pipeline and back liquid pipeline, still include liftable support and buffer structure, the liftable support contains base, slide rail and electric push rod, the slide rail is through welding or bolt vertical fixed surface on the base, the circulating pump's casing is through the T -type groove sliding connection of slide rail with slider, the cylinder end of electric push rod is fixed in the base side wall through hinged support, the telescopic end of electric push rod is rigid connection through flange and circulating pump bottom, the buffer structure includes elastic support, is located on the elastic support and is equipped with the buffer tank of outlet pipe at top and elastic connecting pipe, the buffer tank bottom is sealed connection through flange and circulating pump export end, the device is through height -adjustable, damping voltage stabilizing and intelligent monitoring design, has improved the compatibility, security and process stability of pipeline pickling significantly.

Description

Technical Field

[0001] This utility model relates to the field of pipeline treatment technology, and specifically discloses an adjustable pipeline pickling and passivation device. Background Technology

[0002] Pharmaceutical manufacturing plants utilize numerous pipelines for transporting pharmaceutical solutions. After installation, these pipelines undergo acid pickling. The purpose of acid pickling is to remove oxides and oil from the metal pipe surface through chemical action, achieving a shiny metallic surface and ensuring the cleanliness of the pipe's inner wall. Simultaneously, the rust-prevention treatment following acid pickling protects the underlying metal of the pipe wall from further corrosion. Therefore, pipeline acid pickling is a crucial step in pipeline construction.

[0003] Existing pickling and passivation equipment, such as the technical solution in the document with application number CN212222159438.9, is a mobile pickling and passivation device that connects to the pipe to be pickled via a flexible hose. However, the following problems still exist:

[0004] 1. When dealing with pipes of different heights, the bending angle of the hose is also different. When the bending angle of the hose is too large, the inner wall of the hose is prone to deformation at the connection between the hose and rigid pipes such as the circulating pump and the inlet pipe, which may lead to a decrease in the flow of the hose or even the hose blockage, resulting in the equipment not being able to operate or the circulating pump being damaged.

[0005] 2. When the equipment starts or stops, the flow rate in the hose changes significantly, which disrupts the force balance within the hose and causes it to sway. The swaying hose can easily disturb surrounding equipment or personnel. Utility Model Content

[0006] This utility model proposes an adjustable pipeline pickling and passivation device. Through components such as a liftable support and a buffer structure, the device achieves flexible height adjustment, effective buffering and shock absorption, automatic safety protection, and rapid sealing connection. It is also easy to operate precisely, optimizes the buffering effect, and ensures reliable connection, combining flexibility, safety, efficiency, and reliability.

[0007] This utility model is implemented as follows: an adjustable pipeline pickling and passivation device includes a pickling tank, a circulating pump, an inlet pipe, and a return pipe, as well as a liftable support and a buffer structure. The liftable support includes a base, a slide rail, and an electric push rod. The slide rail is vertically fixed to the upper surface of the base by welding or bolts. The housing of the circulating pump is slidably connected to the T-slot of the slide rail via a slider. The cylinder end of the electric push rod is fixed to the side wall of the base via a hinged support, and the telescopic end of the electric push rod is rigidly connected to the bottom of the circulating pump via a flange. The buffer structure includes an elastic support, a buffer tank mounted on the elastic support and having an outlet pipe at the top, and an elastic connecting pipe. The bottom of the buffer tank is sealed to the outlet end of the circulating pump via a flange, and the inlet of the circulating pump is connected to the bottom of the pickling tank via an elastic suction pipe. One end of the elastic connecting pipe is connected to the outlet pipe at the top of the buffer tank via a stainless steel clamp, and the other end is locked to the inlet end of the inlet pipe via a quick-connect coupling.

[0008] As a preferred embodiment of the adjustable pipeline pickling and passivation device of this utility model, the slide rail surface is provided with scale markings, the zero point of the scale markings is aligned with the upper surface of the base, and the scale interval is 1mm, and the side wall of the circulation pump is provided with an arrow pointer.

[0009] As a preferred embodiment of the adjustable pipeline pickling and passivation device of this utility model, the top of the buffer tank has a pressure balance hole, and the interior of the buffer tank is provided with a spiral guide plate.

[0010] As a preferred embodiment of the adjustable pipe pickling and passivation device of this utility model, the elastic connecting pipe is composed of an inner polytetrafluoroethylene lining layer, a stainless steel wire braided layer and an outer rubber protective layer from the inside to the outside.

[0011] As a preferred embodiment of the adjustable pipeline pickling and passivation device of this utility model, a quick connector is welded to the other end of the liquid inlet pipeline, and a hose fixing clamp for locking the pipeline to be treated is installed on the quick connector.

[0012] As a preferred embodiment of the adjustable pipeline pickling and passivation device of this utility model, the pickling tank is equipped with a liquid level sensor, the base is equipped with a control cabinet, and the control cabinet is equipped with a liquid level monitoring module connected to the liquid level sensor signal. When the liquid level is lower than the set threshold, the machine will automatically stop.

[0013] As a preferred embodiment of the adjustable pipeline pickling and passivation device of this utility model, the outlet end of the return liquid pipeline is provided with a flow divider and stabilizer; the return liquid pipeline is provided with a pH value monitoring and alarm device, the electrode of the pH value monitoring and alarm device is inserted into the pipeline through a compression fitting seal connector, and the signal line is connected to the PLC module of the control cabinet.

[0014] The beneficial effects of this utility model are:

[0015] 1. The height of the circulating pump can be easily adjusted by the liftable bracket (slide rail, electric push rod) to adapt to different working scenarios and pipeline connection requirements, increasing the flexibility and applicability of the device.

[0016] 2. The buffer structure (buffer tank, flexible connecting pipe) can effectively buffer the impact force of fluid flow, reduce damage to pipes and equipment, extend the service life of equipment, and reduce vibration and noise during operation.

[0017] 3. By cooperating with the liquid level sensor in the pickling tank and the liquid level monitoring module in the control cabinet, the machine will automatically stop when the liquid level is too low to prevent the circulating pump from running dry and being damaged; the pH value monitoring and alarm device on the return liquid pipeline monitors the acidity and alkalinity of the return liquid in real time to ensure the safety and controllability of the pickling process. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the slide rail of this utility model.

[0021] Figure 3 This is a schematic diagram of the liquid level sensor of this utility model.

[0022] Figure 4 This is a schematic diagram of the internal structure of the buffer tank of this utility model.

[0023] Figure 5 This is a cross-sectional view of the elastic connecting tube of this utility model.

[0024] The markings in the diagram are: 1. Pickling tank; 2. Circulation pump; 3. Inlet pipe; 4. Return pipe; 5. Base; 6. Slide rail; 7. Electric push rod; 8. Flexible support; 9. Outlet pipe; 10. Buffer tank; 11. Flexible connecting pipe; 12. Flexible suction pipe; 13. Scale markings; 14. Arrow pointer; 15. Pressure balance hole; 16. Spiral guide plate; 17. Quick connector; 18. Hose clamp; 19. Liquid level sensor; 20. Control cabinet; 21. Flow divider; 22. pH monitoring and alarm device; 23. Pipe to be treated. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0026] Please see Figure 1-5 An adjustable pipeline pickling and passivation device includes a pickling tank 1, a circulating pump 2, an inlet pipe 3, and a return pipe 4, as well as a liftable support and a buffer structure. The liftable support includes a base 5, a slide rail 6, and an electric push rod 7. The slide rail 6 is vertically fixed to the upper surface of the base 5 by welding or bolts. The housing of the circulating pump 2 is slidably connected to the T-slot of the slide rail 6 by a slider. The cylinder end of the electric push rod 7 is fixed to the side wall of the base 5 by a hinged support. The telescopic end of the electric push rod 7 is rigidly connected to the bottom of the circulating pump 2 by a flange. The buffer structure includes an elastic support 8, a buffer tank 10 mounted on the elastic support 8 and having an outlet pipe 9 at the top, and an elastic connecting pipe 11. The bottom of the buffer tank 10 is sealed to the outlet end of the circulating pump 2 by a flange. The inlet of the circulating pump 2 is connected to the bottom of the pickling tank 1 by an elastic suction pipe 12. One end of the elastic connecting pipe 11 is connected to the outlet pipe 9 at the top of the buffer tank 10 by a stainless steel clamp, and the other end is locked to the inlet end of the inlet pipe 3 by a quick-connect fitting.

[0027] In this embodiment: the pickling solution is stored in the pickling tank 1, and the circulation pump 2 draws the pickling solution from the bottom of the pickling tank 1 through the flexible suction pipe 12; after entering the circulation pump 2, the pickling solution is sent to the buffer tank 10 by the circulation pump 2, and the buffer tank 10 plays a buffering role to reduce the impact of liquid flow; the pickling solution after passing through the buffer tank 10 enters the inlet pipe 3 through the flexible connecting pipe 11, and then enters the pipe to be treated for pickling and passivation treatment through the quick-connect coupling at the end of the inlet pipe 3; the treated pickling solution flows back through the return pipe 4, and the flow diverter 21 at the outlet of the return pipe 4 stabilizes the flow of the return liquid, and the pH value monitoring and alarm device 22 monitors the pH value of the return liquid in real time and feeds the signal back to the PLC module of the control cabinet 20; when the liquid level sensor 19 in the pickling tank 1 detects that the liquid level is lower than the set threshold, the control cabinet 20 is activated. The liquid level monitoring module inside the control cabinet 20 controls automatic shutdown; the height of the circulating pump 2 can be easily adjusted by the liftable bracket (base 5, slide rail 6, electric push rod 7) to adapt to different working scenarios and pipeline connection requirements, increasing the flexibility and applicability of the device; the buffer structure (elastic bracket 8, buffer tank 10, elastic connecting pipe 11) can effectively buffer the impact force of fluid flow, reduce damage to pipelines and equipment, extend the service life of the equipment, and reduce vibration and noise during operation; and the bottom of the buffer tank 10 is sealed to the outlet end of the circulating pump 2 through a flange. When the circulating pump 2 is raised or lowered, the elastic bracket 8 ensures that the buffer tank 10 and its connecting pipe are not restricted (the elastic bracket 8 consists of a bracket base and a rubber shock absorber set on the bracket base, and the buffer tank 10 is set on the bracket base through the rubber shock absorber).

[0028] As a technical optimization of this utility model, the slide rail 6 is provided with scale markings 13, the zero point of scale markings 13 is aligned with the upper surface of the base 5, and the scale interval is 1mm. The side wall of the circulation pump 2 is provided with an arrow pointer 14.

[0029] In this embodiment: the scale mark 13 is marked on the side of the slide rail 6 by laser etching, providing a precise height adjustment reference; the scale mark 13 and the pointer realize millimeter-level precise control of the position of the circulation pump 2, making the height adjustment of the circulation pump 2 more intuitive and accurate, and making it convenient for operators to accurately control the height position of the circulation pump 2.

[0030] As a technical optimization of this utility model, a pressure balance hole 15 is opened through the top of the buffer tank 10, and a spiral guide plate 16 is provided inside the buffer tank 10.

[0031] In this embodiment: the pressure balance hole 15 maintains the pressure balance inside and outside the tank, and the spiral guide plate 16 reduces fluid impact.

[0032] As a technical optimization of this utility model, the elastic connecting pipe 11 is composed of an inner polytetrafluoroethylene lining layer, a stainless steel wire braided layer and an outer rubber protective layer from the inside to the outside.

[0033] In this embodiment: the polytetrafluoroethylene layer is resistant to acid corrosion, the stainless steel wire braided layer is resistant to compression and tension, and the rubber protective layer prevents external damage; thereby improving the sealing performance, corrosion resistance and flexibility of the elastic connecting pipe 11, and enhancing the reliability of the connection.

[0034] As a technical optimization of this utility model, a quick connector 17 is welded to the other end of the liquid inlet pipe 3, and a hose fixing clamp (18) for locking the pipe to be treated is installed on the quick connector 17.

[0035] In this embodiment: the quick connector 17 is welded to the end of the liquid inlet pipe 3, and the hose clamp 18 ensures a tight connection with the pipe to be treated to prevent the pickling solution from leaking; and the silicone anti-slip pad of the hose clamp 18 is in close contact with the outer wall of the quick connector, and the radial clamping force ≥50N is applied by the ratchet mechanism of the rotating locking buckle to prevent the connector from loosening (the hose clamp (18) is prior art, and the specific structure is not shown in the figure).

[0036] As a technical optimization of this utility model, a liquid level sensor 19 is provided in the pickling tank 1, and a control cabinet 20 is provided on the base 5. The control cabinet 20 is provided with a liquid level monitoring module that is connected to the liquid level sensor 19. When the liquid level is lower than the set threshold, the machine will automatically stop.

[0037] In this embodiment: the liquid level monitoring module receives the signal from the liquid level sensor 19 and controls the automatic shutdown when the liquid level is too low; the PLC module receives the signal from the pH value monitoring and alarm device 22 to realize the control and monitoring of the pickling process (the probe end of the liquid level sensor 19 is 50mm from the bottom of the tank, and the signal line is connected to the control cabinet 20 through a waterproof connector).

[0038] As a technical optimization of this utility model, a flow divider 21 is provided at the outlet end of the return liquid pipeline 4; a pH value monitoring and alarm device 22 is provided on the return liquid pipeline 4, and the electrode of the pH value monitoring and alarm device 22 is inserted into the pipeline through a compression fitting seal connector, and the signal line is connected to the PLC module of the control cabinet 20.

[0039] In this embodiment: the flow divider 21 is installed at the outlet end of the return liquid pipe 4 to stabilize the return pickling solution. The pH value monitoring and alarm device 22 monitors the pH value of the pickling solution in the return liquid pipe 4 in real time. When the pH value is abnormal, an alarm signal is issued and the signal is fed back to the PLC module of the control cabinet 20. The flow divider 21 includes a honeycomb guide plate and a conical diffuser. The small end of the conical diffuser is connected to the outlet end of the return liquid pipe 4 through a flange. The flared end of the conical diffuser faces the bottom of the pickling tank. The honeycomb guide plate is located inside the conical diffuser, and the axis of the channel of the honeycomb guide plate is parallel to the flow direction of the pipe. The pH value monitoring and alarm device 22 is installed at the lower end of the return liquid pipe 4, 210-300mm away from the flange of the flow divider 21. The electrode of the pH value monitoring and alarm device 22 is inserted into the pipe through a compression fitting, and the signal line is connected to the PLC module of the control cabinet 20 (the specific structure of the flow divider 21 and the pH value monitoring and alarm device 22 is not shown in the figure).

[0040] Working principle and usage process of this utility model:

[0041] The circulation pump 2 is started, and it draws pickling solution from the bottom of the pickling tank 1 through the flexible suction pipe 12. After entering the circulation pump 2, the pickling solution is transported to the buffer tank 10. The spiral guide plate 16 inside the buffer tank 10 optimizes the liquid flow path, and the pressure balancing hole 15 at the top balances the pressure inside the tank, thus buffering the impact force of the liquid flow. The buffered pickling solution enters the inlet pipe 3 through the flexible connecting pipe 11. The inner lining of the flexible connecting pipe 11, the stainless steel wire braided layer, and the outer rubber protective layer ensure the sealing, corrosion resistance, and flexibility of the connection. The pickling solution enters the pipeline to be treated through the inlet pipe 3 for pickling and passivation treatment. The treated pickling solution then... The return liquid is fed back through pipe 4. The flow stabilizer 21 at the outlet of pipe 4 stabilizes the flow of the returned liquid, making the liquid flow more stable. The pH value monitoring and alarm device 22 on pipe 4 monitors the pH value of the returned liquid in real time. Its electrode is inserted into the pipe through a compression fitting, and the signal line is connected to the PLC module of control cabinet 20. When the pH value is abnormal, an alarm signal is issued. The liquid level sensor 19 in pickling tank 1 monitors the liquid level in real time and transmits the signal to the liquid level monitoring module in control cabinet 20. When the liquid level sensor 19 detects that the liquid level is lower than the set threshold, the liquid level monitoring module controls the automatic shutdown to prevent the circulation pump 2 from running dry and being damaged. After the pickling and passivation treatment is completed, the circulation pump 2 is turned off.

[0042] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., 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 utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0043] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An adjustable pipeline pickling and passivation device, comprising a pickling tank (1), a circulating pump (2), an inlet pipe (3), and a return pipe (4), characterized in that: It also includes a liftable support and a buffer structure; the liftable support includes a base (5), a slide rail (6), and an electric push rod (7); the slide rail (6) is vertically fixed to the upper surface of the base (5) by welding or bolts, the housing of the circulation pump (2) is slidably connected to the T-slot of the slide rail (6) by a slider, the cylinder end of the electric push rod (7) is fixed to the side wall of the base (5) by a hinged support, and the telescopic end of the electric push rod (7) is rigidly connected to the bottom of the circulation pump (2) by a flange; the buffer structure includes elastic The system includes a support (8), a buffer tank (10) mounted on the elastic support (8) and an outlet pipe (9) at the top, and an elastic connecting pipe (11). The bottom of the buffer tank (10) is sealed to the outlet end of the circulating pump (2) via a flange. The inlet of the circulating pump (2) is connected to the bottom of the pickling tank (1) via an elastic suction pipe (12). One end of the elastic connecting pipe (11) is connected to the outlet pipe (9) at the top of the buffer tank (10) via a stainless steel clamp, and the other end is locked to the inlet end of the liquid inlet pipe (3) via a quick-connect fitting.

2. The adjustable pipeline pickling and passivation device according to claim 1, characterized in that: The slide rail (6) has a scale mark (13) on its surface. The zero point of the scale mark (13) is aligned with the upper surface of the base (5), and the scale interval is 1mm. The circulation pump (2) has an arrow pointer (14) on its side wall.

3. The adjustable pipeline pickling and passivation device according to claim 1, characterized in that: The top of the buffer tank (10) has a pressure balance hole (15) and the interior of the buffer tank (10) is provided with a spiral guide plate (16).

4. The adjustable pipeline pickling and passivation device according to claim 1, characterized in that: The elastic connecting tube (11) consists of an inner polytetrafluoroethylene lining layer, a stainless steel wire braided layer and an outer rubber protective layer from the inside out.

5. The adjustable pipeline pickling and passivation device according to claim 1, characterized in that: The other end of the liquid inlet pipe (3) is welded with a quick connector (17), and a hose clamp (18) for locking the pipe to be treated is installed on the quick connector (17).

6. The adjustable pipeline pickling and passivation device according to claim 1, characterized in that: The pickling tank (1) is equipped with a liquid level sensor (19), and the base (5) is equipped with a control cabinet (20). The control cabinet (20) is equipped with a liquid level monitoring module that is connected to the liquid level sensor (19) and automatically stops when the liquid level is lower than the set threshold.

7. The adjustable pipeline pickling and passivation device according to claim 1, characterized in that: The outlet end of the return pipe (4) is equipped with a flow divider (21); the return pipe (4) is equipped with a pH value monitoring alarm device (22), the electrode of the pH value monitoring alarm device (22) is inserted into the pipe through a compression fitting, and the signal line is connected to the PLC module of the control cabinet (20).

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