Fluid distribution device capable of automatically balancing pressure
By automatically adjusting the position of the paddle in the fluid distribution device, the problem of pressure distribution accuracy and cost in the open fluid system is solved, and high-precision, fast and economical fluid media distribution is achieved.
Patent Information
- Application Number
- CN202411399939.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-01-03
AI Technical Summary
The prior art is difficult to accurately control the pressure distribution of fluid media in open fluid systems, and the control method is complex and costly, making it difficult to meet the requirements of accuracy and cost.
A fluid distribution device with automatic pressure balance is designed, using a mechanical pressure feedback mechanism, through the piston, column, partition and connecting rod structures, the position of the paddle is automatically adjusted to ensure that the pressures of the two outlets remain equal and the fluid is realized. Balanced distribution of media.
It realizes high-precision and rapid pressure control, reduces control costs, avoids the use of electrical components and energy consumption, and is suitable for various fluid media systems.
Smart Images
Figure CN119244785A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a fluid distribution device with automatic pressure balance, which can divide one medium into two mediums with equal pressures and belongs to the field of fluid technology. Background Art
[0002] Fluid technology mainly controls the flow direction and pressure of the fluid medium to achieve the purpose of controlling the actuator to do work. How to accurately control the pressure of the fluid has always been the key to fluid technology, especially in open fluid systems, where pressure control is even more important.
[0003] When it is necessary to divide one fluid medium into two media with equal pressure, a tee is generally used to control the fluid, but this method has low control accuracy and sometimes cannot meet the requirements; flow meters and pressure gauges can also be used to measure the flow and pressure of the fluid, and then the valve port of the regulating valve can be controlled according to the measured values of flow and pressure to achieve the purpose of accurately controlling the branch flow and pressure, but this control method is more complicated and costly, and is only suitable for use in large systems. Therefore, how to reduce the cost of fluid control while ensuring the accuracy of branch pressure control has become a topic faced by relevant technicians. Summary of the invention
[0004] The purpose of the present invention is to provide a fluid distribution device with automatic pressure balance to improve the branch pressure control accuracy and reduce the control cost in view of the drawbacks of the prior art.
[0005] To achieve the above object, the present invention adopts the following technical solution: A fluid distribution device with automatic pressure balance, comprising a crossbeam, a connecting rod, a column, two partitions and two pistons installed in an outer shell, a water inlet is provided in the middle of the rear wall of the outer shell, and two water outlets symmetrically distributed on both sides of the axis of the water inlet are provided on the front wall; the two partitions are symmetrically arranged on both sides of the axis of the water inlet and are respectively opposite to the two water outlets; the two pistons are located between the two water outlets and are respectively fixed at both ends of the crossbeam, and the two pistons are respectively slidably installed in the fluid channel between the front wall of the outer shell and the two partitions, the connecting rod is located between the two partitions, the rear end of the connecting rod is connected to the paddle arranged in the water inlet, the front end is provided with an axial long sliding hole, the middle part is rotatably connected to the outer shell through a hinge shaft, the upper end of the column is slidably inserted into the long sliding hole, and the lower end is fixedly connected to the crossbeam.
[0006] In the above-mentioned fluid distribution device with automatic pressure balance, the lower end of the column is fixedly connected to the crossbeam through a gasket and a special-shaped nut, the upper end diameter of the column is larger than the lower end diameter, the center hole diameter of the gasket is smaller than the upper end diameter of the column, and the lower end of the column passes through the center hole of the gasket and the axial long strip adjustment hole in the middle of the crossbeam in sequence and then is screwed into the threaded hole of the special-shaped nut.
[0007] In the above-mentioned fluid distribution device with automatic pressure balance, the upper part of the special-shaped nut is provided with a groove matching the crossbeam.
[0008] In the above-mentioned fluid distribution device with automatic pressure balance, a detachable upper cover is provided on the top of the shell, and the upper cover and the shell form an adjustment chamber.
[0009] The present invention adopts a mechanical pressure feedback mechanism, which can automatically adjust the position of the paddle according to the pressure feedback result, so that the pressure of the two water outlets remains equal. The device not only has high control accuracy and fast response, but also does not use electrical components and does not consume energy compared to the sensor feedback system, which can reduce the control cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0011] Figure 1 It is a schematic diagram of the structure of the present invention, wherein Figure 1 (a) is the main view, Figure 1 (b) is a top view (cross-sectional view); Figure 2 is a schematic diagram of the connecting rod structure, where Figure 2 (a) is the main view, Figure 2 (b) is a top view; Figure 3 is the assembly diagram of the connecting rod and the crossbeam, where Figure 3 (a) Yes Figure 1 BB cross-sectional view, Figure 3 (b) Yes Figure 3 (a) Right side view; Figure 4 It is a schematic diagram of the structure of a special-shaped nut, where Figure 4 (a) is the main view, Figure 4 (b) is a top view; Figure 5 It is a structural diagram of the beam.
[0012] The numbers in the figure are as follows: 1. left water outlet, 2. piston, 3. column, 4. crossbeam, 5. right water outlet, 6. right partition, 7. outer shell, 8. hinge shaft, 9. connecting rod, 10. upper cover, 11. water inlet, 12. left partition, 13. long sliding hole, 14. shaft hole, 15. paddle, 16. gasket, 17. special-shaped nut, 18. groove, 19. threaded hole, 20. long adjusting hole. DETAILED DESCRIPTION
[0013] In view of the problems existing in the prior art, the present invention provides an inventive fluid distribution device with automatic pressure balance. The device is mainly used in an open fluid medium system. It realizes the balanced distribution of pressure and flow of fluid medium (water, compressed air, hydraulic oil, etc.) through a simple structure, and can divide one medium into two media with equal pressure, thereby solving the problem of balancing accuracy and cost.
[0014] See also Figure 1-Figure 5 The present invention comprises a piston 2, a column 3, a crossbeam 4, two partitions, a shell 7, a hinge shaft 8, a connecting rod 9, an upper cover 10, a paddle 15, a gasket 16 and a special-shaped nut 17; wherein the shell 7 is the main supporting structural component, the shell 7 and the upper cover 10 form an adjustment cavity, and the other components are installed in the adjustment cavity, a water inlet 11 is provided in the middle of the rear wall of the shell 7, and two parallel water outlets, i.e., a left water outlet 1 and a right water outlet 5, are provided on the front wall, and the left water outlet 1 and the right water outlet 5 are symmetrically arranged on both sides of the axis of the water inlet 11 ; The two partitions are a left partition 12 and a right partition 6, the right partition 6 and the left partition 12 are symmetrically arranged on both sides of the axis of the water inlet 11 and are respectively opposite to the left water outlet 1 and the right water outlet 5, the right partition 6 and the left partition 12 are welded to the inner wall of the shell 7; the two pistons 2 are located between the left water outlet 1 and the right water outlet 5, the two pistons 2 are slidably installed in the fluid channel between the front wall of the shell 7 and the right partition 6 and the left partition 12, and can slide left and right along the fluid channel, and the two pistons 2 are respectively installed to the crossbeam through threads 4; the connecting rod 9 is located between the right partition 6 and the left partition 12 and is coaxial with the water inlet 11. The rear end of the connecting rod 9 is connected to the paddle 15 set in the water inlet 11, and the front end is provided with an axial long sliding hole 13. The middle part of the connecting rod 9 is provided with an axial hole 14 matching the hinge shaft 8. The connecting rod 9 is rotatably connected to the shell 7 through the vertical hinge shaft 8 welded on the shell 7. The upper end diameter of the column 3 is larger than the lower end diameter. The upper end of the column 3 is slidably installed in the long sliding hole 13 at the front end of the connecting rod 9, and the lower end of the column 3 passes through the gasket 16 in sequence. The axial long adjustment hole 20 in the middle of the beam 4 is screwed into the threaded hole 19 of the special-shaped nut 17. The diameter of the center hole of the gasket 16 is smaller than the upper end diameter of the column 3. The column 3 is fixed to the middle of the beam 4 by the gasket 16 and the special-shaped nut 17; the special-shaped nut 17 is located at the lower part of the beam 4, and the upper part of the special-shaped nut 17 is provided with a groove 18 matching the beam 4. The groove 18 can clamp the lower part of the beam 4 so that the special-shaped nut 17 can slide along the beam 4. Loosening the special-shaped nut 17 can fine-tune the position of the column 3 on the beam 4.
[0015] Both ends of the connecting rod 9 are designed with arcs, which can allow water to flow through the connecting rod 9 more smoothly and reduce resistance; the main function of the long sliding hole 13 is to provide a sliding track for the column 3.
[0016] The heterosexual nut 17 is provided with a groove 18, so that the whole is U-shaped. The main function of the groove 18 is to enable the heterosexual nut 17 to slide along the crossbeam 4 but not to rotate.
[0017] The present invention does not require any adjustment when used, and only requires the water inlet 11, the left water outlet 1, and the right water outlet 5 to be connected to corresponding pipes.
[0018] The working principle of the present invention is as follows: after the fluid enters the water inlet 11, it is divided into two streams, and reaches the left water outlet 1 and the right water outlet 5 from the two sides of the paddle 15 respectively, and then is discharged from the left water outlet 1 and the right water outlet 5. When the pressure at the left water outlet 1 is greater than the pressure at the right water outlet 5, the two pistons 2 and the crossbeam 4 move to the right under the action of the pressure difference, and the column 3 fixed on the crossbeam 4 causes the connecting rod 9 to rotate around the hinge shaft 8 as the crossbeam 4 moves to the right, driving the paddle 15 to move to the left, narrowing the left channel of the paddle 15 and widening the right channel, thereby reducing the fluid reaching the left water outlet 1 and increasing the fluid reaching the right water outlet 5, reducing the pressure at the left water outlet 1, and increasing the pressure at the right water outlet 5, until the pressure at the left water outlet 1 is equal to the pressure at the right water outlet. 5, the two pistons 2 and the crossbeam 4 stop moving; similarly, when the pressure at the left water outlet 1 is less than the pressure at the right water outlet 5, the two pistons 2 and the crossbeam 4 move to the left under the action of the pressure difference, and drive the paddle 15 to move to the right through the column 3 and the connecting rod 9, so that the pressure at the left water outlet 1 increases and the pressure at the right water outlet 5 decreases, until the pressure at the left water outlet 1 is equal to the pressure at the right water outlet 5, and the two pistons 2 and the crossbeam 4 stop moving, so that the pressure at the left water outlet 1 and the right water outlet 5 can be kept consistent.
[0019] An embodiment of the present invention is as follows: The water inlet 11 has a diameter of 30 mm and a length of 50 mm; The left water outlet 1 has a diameter of 15 mm and a length of 50 mm; The right water outlet 5 has a diameter of 15 mm and a length of 50 mm.
[0020] The housing 7 is 230 mm long, 60 mm wide and 40 mm high; The upper cover 10 is 230mm long, 60mm wide, 10mm high, and made of acrylic. Hinge shaft 8 has a diameter of 4 mm and a length of 50 mm; The connecting rod 9 has a length of 75 mm, a width of 6 mm and a height of 50 mm; Gasket 16 has an outer diameter of 8 mm, an inner diameter of 3 mm, and a thickness of 2 mm; Special-shaped nut 17 is 8 mm long, 6 mm wide and 4 mm high; The upper diameter of the column is 4mm, the lower diameter is 3mm, and the length is 30mm; Beam 4 has a length of 60 mm, a width of 6 mm, and a height of 6 mm; The piston 2 has a length of 20 mm, a width of 10 mm and a height of 30 mm.
[0021] The beneficial effect of the present invention is that the pressure of the two water outlets is compared by using a mechanical pressure feedback mechanism, and the position of the paddle is automatically adjusted according to the pressure feedback result, so as to control the flow and pressure of the two water outlets. The device has high control accuracy and fast response. Compared with the sensor feedback system, it does not use electrical components and does not consume energy. It is not only simple in structure, economical and reliable, but also has a wider range of applications.
Claims
1. A fluid dispensing device with automatic pressure balance, characterized in that: The invention comprises a crossbeam (4), a connecting rod (9), a column (3), two partitions and two pistons (2) installed in a shell (7); a water inlet (11) is provided in the middle of the rear wall of the shell (7); and two water outlets symmetrically distributed on both sides of the axis of the water inlet (11) are provided on the front wall; the two partitions are symmetrically arranged on both sides of the axis of the water inlet (11) and are respectively opposite to the two water outlets; the two pistons (2) are located between the two water outlets and are respectively fixed at both ends of the crossbeam (4); the two pistons (2) are respectively slidably installed in the fluid channel between the front wall of the shell (7) and the two partitions; the connecting rod (9) is located between the two partitions; the rear end of the connecting rod (9) is connected to a paddle (15) arranged in the water inlet (11); the front end is provided with an axial long sliding hole (13); the middle part is rotatably connected to the shell (7) through a hinge shaft (8); the upper end of the column (3) is slidably inserted into the long sliding hole (13); the lower end is fixedly connected to the crossbeam (4).
2. A fluid dispensing device with automatic pressure balance according to claim 1, characterized in that: The lower end of the column (3) is fixedly connected to the cross beam (4) via a gasket (16) and a special-shaped nut (17); the upper end diameter of the column (3) is larger than the lower end diameter; the center hole diameter of the gasket (16) is smaller than the upper end diameter of the column (3); the lower end of the column (3) passes through the center hole of the gasket (16) and the axial long strip adjustment hole (20) in the middle of the cross beam (4) in sequence and then is screwed into the threaded hole (19) of the special-shaped nut (17).
3. A fluid dispensing device with automatic pressure balance according to claim 2, characterized in that: The upper portion of the special-shaped nut (17) is provided with a groove (18) matching the crossbeam (4).
4. A fluid dispensing device with automatic pressure balance according to any one of claims 1 to 3, characterized in that: A detachable upper cover (10) is provided on the top of the outer shell (7), and the upper cover (10) and the outer shell (7) enclose an adjustment cavity.