Low-pressure large-flow high-pressure small-flow double-speed liquid filling water circulation system

Abstract

The invention discloses a low-pressure large-flow high-pressure small-flow double-speed liquid filling water circulation system which comprises a low-pressure large-flow pipeline, a high-pressure small-flow pipeline, a filter, a recycling water tank, a mold frame, a hoop and a mold. The system is reasonable and ingenious in structural design, the liquid filling time can be greatly shortened through double-speed liquid filling water circulation of the low-pressure large-flow pipeline and the high-pressure small-flow pipeline, the power of a high-pressure small-flow system is reduced, the production efficiency is improved, and meanwhile the system achieves water recycling through linkage among the recycling water pool, the circulation pipeline, the filter and the recycling water tank; the multi-stage filtering system guarantees the water use requirement of the supercharger, greatly improves the working reliability of the supercharger and prolongs the service life of the supercharger, and therefore it is guaranteed that the whole production process can operate efficiently, stably and environmentally friendly.

Description

Technical Field

[0001] The present invention relates to a low-pressure, high-flow, high-pressure, low-flow, dual-speed liquid-filling water circulation system, in particular to a low-pressure, high-flow, high-pressure, low-flow, dual-speed liquid-filling water circulation system for an internal high-pressure molding process. Background Art

[0002] In order to achieve energy conservation and emission reduction, hollow components with lightweight characteristics are increasingly used in manufacturing fields such as aviation, aerospace, and automobiles.

[0003] As an advanced forming process for manufacturing these hollow structural parts, hydroforming operates on a fundamentally different principle than traditional stamping. While stamping relies primarily on the die to apply pressure to the sheet, causing it to plastically deform and achieve the desired shape, hydroforming cleverly applies both internal pressure and axial force to the tube simultaneously, causing it to plastically deform and gradually cling tightly to the die cavity. Crucially, during the shaping phase, this technology precisely controls the liquid pressure within the tube cavity, effectively controlling the dimensional accuracy of the formed part. This allows for the creation of tubes that meet a variety of complex shapes.

[0004] Hydroforming technology offers significant advantages across multiple dimensions. In terms of structural lightweighting, its unique forming method allows for ingenious internal design while still meeting the mechanical performance requirements of the component, effectively reducing its weight. Furthermore, this technology can be adapted to accommodate a wider range of lightweight, high-strength materials, fully leveraging their performance advantages. This not only significantly improves production efficiency and shortens production cycles, but also effectively reduces part weight and enhances structural stability, providing strong support for improved product performance and sustainable development across various manufacturing sectors.

[0005] The existing water circulation systems for hydroforming equipment often have shortcomings in terms of liquid filling, pressurization, and water circulation. For example, using a high-pressure pressurization system to fill the tube blank with liquid is bulky, costly, and takes a long time to fill, resulting in low production efficiency. Furthermore, if the volume of the pressurization cylinder is constant and the tube blank cannot be filled with liquid, forming failure can occur easily due to leakage. Furthermore, the water circulation system's poor filtration efficiency can shorten the life of the pressurization cylinder. The overall stability and reliability of the system need to be improved, and failures are prone to occur, impacting production efficiency.

[0006] Therefore, it is necessary to develop a new type of dual-speed liquid filling water circulation system for high pressure forming to solve the above problems. Summary of the Invention

[0007] In order to overcome the above-mentioned deficiencies, the present invention provides a low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system.

[0008] To achieve this purpose, the method adopted by the present invention is: a low-pressure, high-flow, high-pressure, low-flow, dual-speed liquid-filling water circulation system, characterized in that it includes a low-pressure, high-flow pipeline, a high-pressure, low-flow pipeline and a molding group, and the low-pressure, high-flow pipeline and the high-pressure, low-flow pipeline constitute a liquid-filling pipeline; the molding group includes a mold, a mold frame and a recovery water pool, the mold is set on the mold frame, the mold frame is set on the recovery water pool, the tube blank is placed in the mold, and both ends of the tube blank are provided with a feeding head and a clamp, the recovery water pool is connected to the recovery water tank through a circulation pipeline and a first water pump The first motor drives the first water pump; the low-pressure and high-flow pipeline includes a water tank, a second water pump, a second motor, a first electromagnetic water valve and a low-pressure water pipe, the low-pressure water pipe is connected to the water tank through the second water pump and the first electromagnetic water valve, the second motor drives the second water pump, and the low-pressure water pipe is connected to the clamp and the feeding head at one end of the tube blank; the high-pressure and low-flow pipeline includes a supercharger, a fourth electromagnetic water valve, a supercharger water inlet pipe and a high-pressure water pipe connected in series in sequence, the fourth electromagnetic water valve is connected to the second water pump through a water pipe, and the high-pressure water pipe is connected to the clamp and the feeding head at the other end of the tube blank.

[0009] The recovery water pool, the recovery water tank and the water tank are interconnected to form a water circulation pipeline, wherein the recovery water tank and the water tank are provided with liquid level detectors.

[0010] The recovery water tank and the water tank are connected to each other via a third water pump, a second electromagnetic water valve and a water pipe, and the third water pump is driven by a third motor.

[0011] The water tank is provided with a water filling port.

[0012] A second filter is provided between the recovery water pool and the recovery water tank.

[0013] A third filter is provided between the recovery water tank and the water tank.

[0014] A one-way valve and a third electromagnetic water valve are provided between the liquid filling pipeline and the water tank.

[0015] The recovery water tank is provided with a water absorption primary filter, and the second water pump is provided with a water intake filter.

[0016] The supercharger is a bidirectional reciprocating cycle supercharger.

[0017] Its beneficial effects are: the structural design of the present invention is reasonable and ingenious, and the dual-speed filling water circulation of the low-pressure, high-flow pipeline and the high-pressure, low-flow pipeline can greatly reduce the filling time, reduce the power of the high-pressure, low-flow system, and improve production efficiency. At the same time, the system realizes the recycling of water with the help of the linkage between the recovery water pool, the circulation pipeline, the filter and the recovery water tank; the multi-stage filtration system it is equipped with guarantees the water demand of the supercharger, greatly improves the working reliability and service life of the supercharger, thereby ensuring that the entire production process can operate efficiently, stably and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a structural diagram of the present invention;

[0020] In the figure, 1- low-pressure water pipe; 2- circulation pipeline; 3- water tank; 4- first water pump; 5- first motor; 6- second water pump; 7- second motor; 8- water inlet; 9- first filter; 10- first solenoid water valve; 11- one-way valve; 12- second solenoid water valve; 13- third water pump; 14- third motor; 15- third solenoid water valve; 16- booster; 17- fourth solenoid water valve; 18- booster water inlet pipe; 19- second filter; 20- recovery water tank; 21- high-pressure water pipe; 22- mold frame; 23- clamp; 24- feeding head; 25- mold; 26- tube blank; 27- recovery water tank. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium, or it may refer to internal communication between two components; a fixed connection may refer to welding or gluing. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] like Figure 1The illustrated system depicts a low-pressure, high-flow, and high-pressure, low-flow dual-speed liquid-filling water circulation system, comprising a low-pressure, high-flow pipeline, a high-pressure, low-flow pipeline, and a molding group. The low-pressure, high-flow pipeline and the high-pressure, low-flow pipeline constitute the liquid-filling pipeline for filling the molding group. The molding group comprises a mold 25, a mold frame 22, and a recovery water tank 27. The mold 25 is mounted on the mold frame 22, which is mounted on the recovery water tank 27. A tube blank 26 is placed within the mold 25, with a feed header 24 and a clamp 23 provided at each end of the tube blank 26. The recovery water tank 27 is connected to the recovery water tank 20 via a circulation pipeline 2 and a first water pump 4. A first motor 4 drives the first water pump 3. The low-pressure, high-flow pipeline includes a water tank 3, a second water pump 6, a second motor 7, a first electromagnetic water valve 10, and a low-pressure water pipe 1. The low-pressure water pipe 1 is connected to the water tank 3 via the second water pump 6 and the first electromagnetic water valve 10. The second motor 7 drives the second water pump 6. The low-pressure water pipe 1 is connected to the clamp and the feeding head at one end of the tube blank 26. The high-pressure, low-flow pipeline includes a booster 16, a fourth electromagnetic water valve 17, a booster water inlet pipe 18, and a high-pressure water pipe 21 connected in series. The fourth electromagnetic water valve 17 is connected to the second water pump 6 via a water pipe. The high-pressure water pipe 21 is connected to the clamp and the feeding head at the other end of the tube blank 26.

[0025] The recovery water pool 27, the recovery water tank 20 and the water tank 3 are interconnected to form a water circulation pipeline, so that the water between the molding group and the filling pipeline is recycled. The recovery water tank 20 and the water tank 3 are provided with liquid level detectors.

[0026] The recovery water tank 20 and the water tank 3 are connected to each other via a third water pump 13 , a second electromagnetic water valve 12 and a water pipe. The third water pump 13 is driven by a third motor 14 .

[0027] The water tank 3 is provided with a water inlet 8 .

[0028] A second filter 19 is provided between the recovery water pool 27 and the recovery water tank 20 .

[0029] A first filter 9 is provided between the recovery water tank 27 and the water tank 3 .

[0030] A one-way valve 11 and a third electromagnetic water valve 15 are provided between the liquid filling pipeline and the water tank 3 .

[0031] The recovery water pool 27 is provided with a water absorption primary filter, and the second water pump 6 is provided with a water intake filter.

[0032] The supercharger 16 is a bidirectional reciprocating cycle supercharger.

[0033] During tube blank production, the low-pressure, high-flow pipeline is first activated. The second motor 7 drives the second water pump 6 to rapidly inject the liquid from the water tank 3 into the tube blank 26, quickly filling it. Next, the feeding heads 24 at both ends of the tube blank 26 rapidly move inward, sealing the pipe openings and completing the feeding process. Subsequently, the high-pressure, low-flow pipeline begins operation. The second motor 7 drives the second water pump 6 to pump liquid from the water tank 3, pressurize it through the supercharger 16, and then inject the high-pressure liquid into the tube blank 26 through the high-pressure water pipe 21 until the outer wall of the tube blank 26 is tightly aligned with the cavity of the mold 25, completing the process. During the pressurization process, due to the high flow rate of the second water pump 6 and the low water requirement for high-pressure replenishment, excess water flows back into the water tank 3 through the one-way valve 11 and the third solenoid valve 15. Finally, the feeding heads 24 on both sides move outward, and the liquid in the tube blank 26 flows into the recovery tank 27, completing the entire tube blank production process, achieving efficient and orderly production operations.

[0034] After tube blank processing, the waste liquid in the recovery tank 27 is recycled. When the liquid level detector detects that the liquid level in the recovery tank 20 is below the bottom dead center, the first motor 5 and the first water pump 4 automatically start, pumping the liquid in the recovery tank 27 into the recovery tank 20 through the circulation line 2 and the second filter 19. When the liquid level in the recovery tank reaches the top dead center, the first motor 5 stops. When the liquid level detector detects that the liquid level in the water tank 3 is below the bottom dead center, the third motor 14 and the third water pump 13 start operating, filtering the liquid in the recovery tank 20 through the first filter 9 and then pumping it into the water tank 3. When the liquid level in the water tank 3 reaches the top dead center, the third motor 14 stops. This ensures that the liquid levels in each water tank remain within the normal range during production, ensuring the smooth and continuous operation of the entire production process. Furthermore, the entire water circulation system includes a four-stage filtration system consisting of the first filter 9, the second filter 19, the primary water intake filter, and the water intake filter to ensure the cleanliness requirements of the water used in the booster cylinder and prevent premature damage to the booster cylinder.

[0035] The above description is for inspiration. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of this invention. The technical scope of this invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A low-pressure, high-flow, high-pressure, low-flow, dual-speed liquid-filled water circulation system, characterized in that: The invention comprises a low-pressure high-flow pipeline, a high-pressure low-flow pipeline and a molding group, wherein the low-pressure high-flow pipeline and the high-pressure low-flow pipeline form a liquid-filled pipeline; the molding group comprises a mold (25), a mold frame (22) and a recovery water pool (27); the mold (25) is arranged on the mold frame (22), the mold frame (22) is arranged on the recovery water pool (27), a tube blank (26) is placed in the mold (25), and both ends of the tube blank (26) are provided with a feeding head (24) and a clamp (23); the recovery water pool (27) is connected to the recovery water tank (20) through a circulation pipeline (2) and a first water pump (4); a first motor (5) drives the first water pump (4); the low-pressure high-flow pipeline comprises a water pump (25); a high ... The invention relates to a water tank (3), a second water pump (6), a second motor (7), a first electromagnetic water valve (10) and a low-pressure water pipe (1), wherein the low-pressure water pipe (1) is connected to the water tank (3) through the second water pump (6) and the first electromagnetic water valve (10), the second motor (7) drives the second water pump (6), and the low-pressure water pipe (1) is connected to the clamp at one end of the tube blank (26) and the feeding head; the high-pressure small flow pipeline comprises a supercharger (16), a fourth electromagnetic water valve (17), a supercharger water inlet pipe (18) and a high-pressure water pipe (21) connected in series in sequence, the fourth electromagnetic water valve (17) is connected to the second water pump (6) through a water pipe, and the high-pressure water pipe (21) is connected to the clamp at the other end of the tube blank (26) and the feeding head.

2. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: The recovery water pool (27), the recovery water tank (20) and the water tank (3) are interconnected to form a water circulation pipeline, wherein the recovery water tank (20) and the water tank (3) are provided with liquid level detectors.

3. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: The recovery water tank (20) and the water tank (3) are connected to each other via a third water pump (13), a second electromagnetic water valve (12) and a water pipe, and the third water pump (13) is driven by a third motor (14).

4. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: The water tank (3) is provided with a water inlet (8).

5. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: A second filter (19) is provided between the recovery water pool (27) and the recovery water tank (3).

6. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 3 is characterized in that: A third filter (9) is provided between the recovery water tank (20) and the water tank (3).

7. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: A one-way valve (11) and a third electromagnetic water valve (15) are provided between the liquid filling pipeline and the water tank (3).

8. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: The water recovery tank (27) is provided with a water absorption primary filter, and the second water pump (6) is provided with a water intake filter.

9. The low-pressure, high-flow, high-pressure, low-flow dual-speed liquid-filled water circulation system according to claim 1 is characterized in that: The supercharger (16) is a bidirectional reciprocating cycle supercharger.

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