Bernoulli adaptive constant flow valve

Abstract

The present invention discloses a Bernoulli adaptive constant flow valve, which includes a valve housing, on which a pressure control component and a flow regulating component are installed. The valve housing is used for fluid transmission and installation of equipment components, the pressure control component is used to control the constant output of fluid flow, and the flow regulating component is used to control the size of the fluid flow output; the valve housing includes an inlet pipe and an outlet pipe, a limiting flow shell is arranged between the inlet pipe and the outlet pipe, and a regulating pipe is arranged between the limiting flow shell and the outlet pipe; the pressure control component includes a pressure control pipe, a pressure control valve, and a pressure regulating valve; the flow regulating component includes a regulating component and a driving component; the present invention provides a Bernoulli adaptive constant flow valve, which uses pressure difference as power and adopts a lever piston method to perform constant flow regulation, so that the response regulation to flow fluctuations is faster, and the design structure of the present invention is relatively simple, the cost is low, the space occupied is small, and the application range is wider.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a Bernoulli adaptive constant flow valve. Background Art

[0002] A constant flow control valve is a control valve with a constant flow function. It is a valve that combines a self-operated differential pressure control device and a flow control device. Its working principle is: use a differential pressure control device to control and stabilize the pressure difference before and after the flow control device, so that after the pressure difference before and after the valve is greater than the constant flow start value, the flow rate passing through no longer changes with the pressure difference before and after the valve. Within the range of differential pressure control, the flow through a certain opening of the valve can automatically remain constant. The change in flow rate can be achieved by simply adjusting the valve opening and has nothing to do with the pressure difference before and after the valve. Valves with the same working principle are sometimes called "dynamic balancing valves" and sometimes called "self-operated flow controllers" or "self-operated flow regulating (control) valves." They all have a certain constant flow function, but they vary greatly in terms of adjustment range, structural volume, maintainability, material and price.

[0003] In the existing technology, the structure of the constant flow valve is generally complex, the cost is high and the response speed to flow regulation is slow. Therefore, in order to address the shortcomings of the existing technology, the present invention provides a Bernoulli adaptive constant flow valve, which uses pressure difference as power and adopts a lever piston method to perform constant flow regulation, so that the response and regulation to flow fluctuations are faster. In addition, the design structure of the present invention is relatively simple, the cost is low, the space occupied is small, and the application range is wider. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems and propose a Bernoulli adaptive constant flow valve, which uses pressure difference as power and adopts a lever piston method to perform constant flow regulation, so that the response and regulation to flow fluctuations are more rapid. In addition, the design structure of the present invention is relatively simple, the cost is low, the space occupied is small, and the application range is wider.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] The Bernoulli adaptive constant flow valve includes a valve housing on which a pressure control component and a flow regulating member are installed. The valve housing is used for fluid transmission and installation of equipment components. The pressure control component is used to control the constant output of the fluid flow, and the flow regulating member is used to control the size of the fluid flow output.

[0007] As a further improvement and optimization of the present invention, the valve housing includes a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe have the same structure and are symmetrically distributed along the vertical direction, and a limited flow shell is provided between the liquid inlet pipe and the liquid outlet pipe;

[0008] The flow-limiting shell is composed of a liquid-guiding shell and a flow-limiting cylinder. The liquid-guiding shell is a rectangular block structure, and the length direction of the liquid-guiding shell is parallel to the flow direction of the fluid. The end surface of the liquid-guiding shell close to the liquid inlet pipe is provided with a liquid-guiding hole along its length. The liquid inlet pipe is installed on the liquid-guiding shell and connected to the liquid-guiding hole.

[0009] The top end surface of the flow-limiting shell is provided with an adjusting hole connected with the liquid guide hole in the vertical direction, and a flow-limiting cylinder is sleeved in the adjusting hole.

[0010] As a further improvement and optimization of the present invention, the flow limiting tube is a cylindrical tube structure with an open upper end and a closed lower end. A flow limiting hole that penetrates the diameter of the flow limiting tube is opened on the outer circumferential surface of the flow limiting tube along its own radial direction. The flow limiting hole and the liquid guide hole are coaxially arranged and connected to each other. The lower end surface of the flow limiting tube is located below the liquid guide hole.

[0011] The upper end of the flow limiting cylinder is provided with a mounting cover, the mounting cover matches the upper end opening of the flow limiting cylinder and is installed at the upper end opening of the flow limiting cylinder, and the mounting cover is provided with a connection hole connected to the flow limiting cylinder, and the connection holes are provided in a plurality;

[0012] A regulating pipe is provided between the flow-limiting shell and the liquid outlet pipe. The regulating pipe includes a regulating pipe 1, a connecting pipe, and a regulating pipe 2. The connecting pipe is coaxially arranged with the liquid inlet pipe. A pressure regulating nozzle connected to the liquid inlet pipe is provided on the upper end wall of the liquid inlet pipe.

[0013] The pressure regulating nozzle is arranged horizontally and the height of the pressure regulating nozzle decreases along the flow direction of the fluid;

[0014] The regulating pipe 1 and the regulating pipe 2 have the same structure and are symmetrically distributed at both ends of the connecting pipe and are connected to the connecting pipe;

[0015] The regulating pipe 1 is a bucket-shaped shell structure with openings at both ends and is coaxially arranged with the connecting pipe. The vertical cross-sectional area of the regulating pipe 1 decreases along the flow direction of the fluid.

[0016] The liquid outlet pipe is located on the side of the regulating pipe 2 away from the communicating pipe and is connected to the regulating pipe.

[0017] As a further improvement and optimization of the present invention, the flow regulating component includes a regulating assembly and a driving assembly, wherein the driving assembly is used to provide power to the regulating assembly, and the regulating assembly is used to control the opening size of the flow limiting hole provided on the flow limiting cylinder;

[0018] The adjusting assembly includes an adjusting piston, a sealing piston, and an adjusting rod. The adjusting piston is used to control the opening size of the flow limiting port. The adjusting piston is a cylindrical block structure and is coaxially arranged in the flow limiting cylinder. A sealed sliding guide fit is formed between the adjusting piston and the inner cavity of the flow limiting cylinder in a vertical direction. The initial position of the adjusting piston is located below the flow limiting hole and the maximum horizontal height of the adjusting piston is equal to the minimum horizontal height of the flow limiting hole.

[0019] As a further improvement and optimization of the present invention, the sealing piston is a cylindrical block structure and is coaxially movably arranged in the flow limiting cylinder. The sealing piston and the inner cavity of the flow limiting cylinder form a vertical sealed sliding guide fit and the sealing piston is arranged above the regulating piston. The minimum horizontal height of the sealing piston is greater than the maximum horizontal height of the flow limiting hole.

[0020] A mounting hole is coaxially provided on the sealing piston;

[0021] The adjusting rod is arranged vertically and coaxially fixedly sleeved in the mounting hole provided on the sealing piston, and the upper end of the adjusting rod passes through the mounting cover provided at the opening of the flow limiting cylinder and extends to the top of the mounting cover;

[0022] The lower end of the regulating rod extends to the bottom of the sealing piston and is fixedly connected to the upper end surface of the regulating piston.

[0023] As a further improvement and optimization of the present invention, the driving assembly includes a driving component and a transmission component, wherein the driving component is used to transmit power to the transmission assembly, and the transmission component is used to drive the adjusting rod to move in the vertical direction;

[0024] The driving component includes an adjustment frame, an adjustment handle, and an adjustment screw. The adjustment frame is fixedly mounted on the mounting cover, and an adjustment shaft is movably mounted on the adjustment frame. The axis of the adjustment shaft is perpendicular to the axis of the adjustment rod and the adjustment shaft rotates around its own axis.

[0025] The adjustment handle is a circular disc structure and is coaxially fixedly mounted on the driving end of the adjustment shaft;

[0026] The adjusting screw is arranged vertically, and a transmission member is provided between the adjusting screw and the adjusting shaft, and power is transmitted between the two through the transmission member;

[0027] The transmission member includes a driving gear and a driven gear. The driving gear is coaxially fixedly sleeved on the outside of the adjusting shaft. The driving gear is a bevel gear structure.

[0028] The driven gear is coaxially fixedly sleeved on the lower end of the adjusting screw rod. The driven gear is a bevel gear structure and is meshed with the driving gear.

[0029] As a further improvement and optimization of the present invention, the transmission component includes a connecting rod and a driving rod, the length direction of the connecting rod is perpendicular to the axis of the adjusting shaft, a mounting groove is provided on a side wall of one end of the connecting rod, a mounting rod is movably provided in the mounting groove, the length direction of the mounting rod is parallel to the axis of the adjusting shaft, and a sliding guide fit is formed between the mounting rod and the mounting groove along the length direction of the connecting rod;

[0030] The upper end side wall of the adjusting rod is provided with a linkage hole and the adjusting rod is coaxially sleeved on the outside of the mounting rod through the linkage hole;

[0031] The driving rod is arranged vertically and movably mounted on the adjustment frame, and the driving rod and the adjustment frame form a sliding guide fit in the vertical direction;

[0032] A driving hole is formed on the lower end surface of the driving rod in the vertical direction, and a driving nut is arranged in the driving hole;

[0033] The upper end of the adjusting screw rod extends into the driving hole and forms a threaded connection with the driving nut provided in the driving hole;

[0034] The upper end of the driving rod is hinged to the middle end of the connecting rod, and the hinge axis formed at the hinge of the driving rod and the connecting rod is parallel to the axis of the adjusting shaft.

[0035] As a further improvement and optimization of the present invention, the pressure control assembly includes a pressure control tube, a pressure control valve, and a pressure regulating valve. The pressure control valve is used to receive the pressure of the pressure regulating nozzle and drive the output flow of the fluid to stabilize through the regulating piston. The pressure control valve includes a control valve body, a pressure control piston, and a pressure regulating rod. The control valve body is a cylindrical structure with an open upper end and a closed lower end, and the control valve body is fixedly mounted on the regulating frame.

[0036] A sealing cover is installed at the upper opening of the control valve body, and the sealing cover is provided with a plurality of vent holes connected with the control valve body;

[0037] The pressure control piston is a cylindrical block structure and is coaxially movably installed in the control valve body, and the pressure control piston and the inner cavity of the control valve body form a sealed sliding guide fit in the vertical direction;

[0038] A pressure control spring is provided between the pressure control piston and the control valve body, one end of the pressure control spring abuts against the pressure control piston and the other end abuts against the control valve body, and the elastic force of the pressure control spring drives the pressure control piston to move vertically upward;

[0039] The pressure regulating rod is arranged vertically, the lower end of the pressure regulating rod passes through the sealing cover and extends along the control valve body and is connected to the upper end surface of the pressure control piston, and a control hole is opened on the upper end side wall of the pressure regulating rod;

[0040] The end of the linkage rod facing away from the adjustment rod is provided with a control groove, the control rod is movably mounted in the control groove and the two form a sliding guide along the length direction of the linkage rod. The length direction of the control rod is parallel to the axis of the adjustment shaft. The adjustment rod is coaxially sleeved on the outside of the control rod through the control hole.

[0041] The lower end surface of the control valve body is provided with an air guide nozzle connected to the control valve body.

[0042] As a further improvement and optimization of the present invention, the pressure regulating valve is arranged between the air guide nozzle and the pressure control tube, and the pressure regulating valve includes a pressure regulating valve body, a pressure regulating handle, and a pressure regulating valve core. The pressure regulating valve body is a cylindrical shell structure with one end open and the other end closed, and the center line of the pressure regulating valve body is parallel to the axis of the regulating shaft;

[0043] A second communication nozzle is vertically mounted on the outer circumferential surface of the regulating valve body and is connected to the inner cavity of the regulating valve body;

[0044] A connecting nozzle 1 is vertically mounted downward on the outer circumferential surface of the regulating valve body, and the connecting nozzle 1 is connected to the inner cavity of the regulating valve body, and the connecting nozzle 1 and the connecting nozzle 2 are coaxially arranged;

[0045] A regulating valve core for controlling the size of the opening at the connection point between the first and second communicating nozzles is movably installed in the regulating valve body. The regulating valve core is a cylindrical block structure and is coaxially arranged with the regulating valve body and rotates around its own axis.

[0046] As a further improvement and optimization of the present invention, a communication hole for connecting the first communication nozzle and the second communication nozzle is provided on the outer circumferential surface of the regulating valve core;

[0047] A blocking plate is installed at the opening of the regulating valve body;

[0048] The pressure regulating handle is a circular disc structure and is located on the side of the sealing plate away from the regulating valve body. The regulating handle and the regulating valve body are arranged coaxially and a transmission shaft is provided between the regulating handle and the regulating valve core.

[0049] The axis of the transmission shaft is parallel to the axis of the regulating handle, one end of the transmission shaft is connected to the regulating handle, and the other end passes through the blocking plate and extends into the regulating valve body and is coaxially connected to the regulating valve core;

[0050] The pressure control tube is arranged between the pressure regulating nozzle and the first connecting nozzle, one end of the pressure control tube is connected to the pressure regulating nozzle, and the other end is connected to the connecting nozzle.

[0051] Compared with the prior art, the present invention has the following advantages:

[0052] 1. The present invention uses pressure difference as power and adopts a lever piston method to perform constant flow regulation, so that the response adjustment to flow fluctuations is more rapid. In addition, the design structure of the present invention is relatively simple, the cost is low, the space occupied is small, and the application range is wider.

[0053] 2. In the process of fluid flowing from the connecting pipe 132 to the second regulating pipe 133, in order to prevent part of the fluid from flowing out of the pressure regulating nozzle 134, the pressure regulating nozzle 134 is arranged horizontally and the height of the pressure regulating nozzle 134 decreases along the flow direction of the fluid.

[0054] 3. The present invention is provided with a pressure regulating valve 220. During the pressure controlling process, the setting of the pressure regulating valve 220 can reduce the impact damage to the pipeline when the pressure fluctuates, making the equipment operation more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] This manual includes the following drawings, which show the following contents:

[0056] Figure 1 It is a structural schematic diagram of the present invention;

[0057] Figure 2 It is a structural schematic diagram of the present invention;

[0058] Figure 3 is a cross-sectional view of the valve housing of the present invention;

[0059] Figure 4 is a cross-sectional view of the valve housing of the present invention;

[0060] Figure 5 A cross-sectional view of a flow-limiting shell of the present invention;

[0061] Figure 6 is a cross-sectional view of the regulating tube of the present invention;

[0062] Figure 7 This is a schematic structural diagram of the pressure control assembly of the present invention;

[0063] Figure 8 is a cross-sectional view of a control valve body of the present invention;

[0064] Figure 9 is a cross-sectional view of the pressure regulating valve body of the present invention;

[0065] Figure 10 Schematic diagram of the flow regulating component structure of the present invention;

[0066] Figure 11 It is a partial structural diagram of the flow regulating component of the present invention;

[0067] Indicated in the figure:

[0068] 100, valve housing; 110, liquid inlet pipe; 120, flow limiting housing; 121, liquid guide housing; 122, flow limiting cylinder; 130, regulating pipe; 131, regulating pipe 1; 132, connecting pipe; 133, regulating pipe 2; 134, pressure regulating nozzle; 140, liquid outlet pipe;

[0069] 200, pressure control assembly; 210, pressure control tube;

[0070] 220, pressure regulating valve; 221, pressure regulating valve body; 222, connecting nozzle 1; 223, connecting nozzle 2; 224, pressure regulating valve core; 225, blocking plate; 226, pressure regulating handle;

[0071] 230. Control valve body; 240. Sealing cover; 250. Pressure regulating rod; 260. Pressure control piston; 270. Pressure control spring; 300. Flow regulating member; 310. Adjusting piston; 320. Sealing piston; 330. Adjusting rod; 340. Linking rod; 350. Driving rod; 360. Adjusting handle; 370. Adjusting frame; 380. Adjusting shaft; 390. Adjusting screw. DETAILED DESCRIPTION

[0072] The following is a further detailed description of the specific implementation methods of the present invention through the description of embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and to facilitate its implementation.

[0073] The Bernoulli adaptive constant flow valve includes a valve housing 100, on which a pressure control component 200 and a flow regulating component 300 are installed. The valve housing 100 is used for fluid transmission and installation of equipment components, the pressure control component 200 is used to control the constant output of the fluid flow, and the flow regulating component 300 is used to control the size of the fluid flow output.

[0074] The valve housing 100 includes a liquid inlet pipe 110 and a liquid outlet pipe 140 . The liquid inlet pipe 110 and the liquid outlet pipe 140 have the same structure and are symmetrically distributed along the vertical direction. A flow limiting housing 120 is provided between the liquid inlet pipe 110 and the liquid outlet pipe 140 .

[0075] The flow-limiting shell 120 is composed of a liquid-guiding shell 121 and a flow-limiting cylinder 122. The liquid-guiding shell 121 is a rectangular block structure and the length direction of the liquid-guiding shell 121 is parallel to the flow direction of the fluid. A liquid-guiding hole is opened along its own length direction on the end surface of the liquid-guiding shell 121 close to the liquid inlet pipe 110; specifically, the above-mentioned liquid inlet pipe 110 is installed on the liquid-guiding shell 121 and connected to the liquid-guiding hole.

[0076] The top end surface of the flow-limiting shell 121 is provided with an adjustment hole connected to the liquid guide hole in the vertical direction, and the flow-limiting cylinder 122 is sleeved in the adjustment hole.

[0077] The flow limiting tube 122 is a cylindrical tube structure with an open upper end and a closed lower end. A flow limiting hole that passes through the diameter of the flow limiting tube 122 is opened on the outer circumferential surface of the flow limiting tube 122 along its own radial direction. The flow limiting hole and the liquid guide hole are coaxially arranged and connected to each other; specifically, the lower end surface of the flow limiting tube 122 is located below the liquid guide hole.

[0078] The upper end of the flow limiting cylinder 122 is provided with a mounting cover, which matches the upper end opening of the flow limiting cylinder 122 and is installed at the upper end opening of the flow limiting cylinder 122. The mounting cover is provided with a connecting hole connected to the flow limiting cylinder 122, and there are several connecting holes.

[0079] A regulating pipe 130 is provided between the flow-limiting shell 121 and the liquid outlet pipe 140. The regulating pipe 130 includes a regulating pipe 1 131, a connecting pipe 132, and a regulating pipe 2 133. The connecting pipe 132 is coaxially arranged with the liquid inlet pipe 110. The upper end wall of the liquid inlet pipe 132 is provided with a pressure regulating nozzle 134 connected to the liquid inlet pipe 132.

[0080] More optimally, in the process of the fluid flowing from the connecting pipe 132 to the regulating pipe 2 133, in order to prevent part of the fluid from flowing out of the pressure regulating nozzle 134, the pressure regulating nozzle 134 is arranged horizontally and the horizontal height of the pressure regulating nozzle 134 decreases along the flow direction of the fluid.

[0081] The regulating tube 1 131 and the regulating tube 2 133 have the same structure and are symmetrically distributed at both ends of the connecting tube 132 and connected to the connecting tube 132 .

[0082] The regulating pipe 131 is a bucket-shaped shell structure with two ends open. The regulating pipe 131 and the connecting pipe 132 are coaxially arranged. The vertical cross-sectional area of the regulating pipe 131 decreases along the flow direction of the fluid.

[0083] The liquid outlet pipe 140 is located on the side of the second regulating pipe 133 away from the connecting pipe 132 and is connected to the regulating pipe 140 .

[0084] During actual operation, the flow direction of the fluid in the valve housing 100 is as follows: the fluid flows into the liquid inlet pipe 110 and flows into the regulating pipe 1 131 through the liquid guide hole set in the liquid guide housing 121, and flows into the connecting pipe 132 through the regulating pipe 131, and finally flows into the liquid outlet pipe 140 through the regulating pipe 2 133 and flows out from the liquid outlet pipe 140.

[0085] The flow regulating component 300 includes a regulating assembly and a driving assembly. The driving assembly is used to provide power to the regulating assembly, and the regulating assembly is used to control the opening size of the flow limiting hole provided on the flow limiting cylinder 122 .

[0086] The adjusting assembly includes an adjusting piston 310, a sealing piston 320, and an adjusting rod 330. The adjusting piston 310 is used to control the opening size of the flow limiting port. The adjusting piston 310 is a cylindrical block structure and is coaxially arranged in the flow limiting cylinder 122, and a vertical sealed sliding guide is formed between the adjusting piston 310 and the inner cavity of the flow limiting cylinder 122; specifically, the initial position of the adjusting piston 320 is located below the flow limiting hole and the maximum horizontal height of the adjusting piston 320 is equal to the minimum horizontal height of the flow limiting hole.

[0087] The sealing piston 320 is a cylindrical block structure and is coaxially movably arranged in the flow limiting cylinder 122. The sealing piston 320 and the inner cavity of the flow limiting cylinder 122 form a vertical sealed sliding guide fit and the sealing piston 320 is arranged above the regulating piston 310; specifically, the minimum horizontal height of the sealing piston 320 is greater than the maximum horizontal height of the flow limiting hole.

[0088] The sealing piston 320 is coaxially provided with a mounting hole.

[0089] The adjusting rod 330 is arranged vertically and coaxially fixedly sleeved in the mounting hole provided on the sealing piston 320. The upper end of the adjusting rod 330 passes through the mounting cover provided at the opening of the flow limiting cylinder 122 and extends to the top of the mounting cover.

[0090] The lower end of the regulating rod 330 extends to the bottom of the sealing piston 320 and is fixedly connected to the upper end surface of the regulating piston 320 .

[0091] The driving assembly includes a driving component and a transmission component. The driving component is used to transmit power to the transmission assembly, and the transmission component is used to drive the adjustment rod 330 to move in the vertical direction.

[0092] The driving components include an adjustment frame 370, an adjustment handle 360, and an adjustment screw 390. The adjustment frame 370 is fixedly installed on the mounting cover, and an adjustment shaft 380 is movably installed on the adjustment frame 370. The axis of the adjustment shaft 380 is perpendicular to the axis of the adjustment rod 330 and the adjustment shaft 380 rotates around its own axis.

[0093] The adjustment handle 360 is a circular disc structure and is coaxially fixedly mounted on the driving end of the adjustment shaft 380 .

[0094] The adjusting screw rod 390 is arranged vertically, and a transmission member is provided between the adjusting screw rod 390 and the adjusting shaft 380, and power is transmitted between the two through the transmission member.

[0095] The transmission member includes a driving gear and a driven gear. The driving gear is coaxially fixedly sleeved on the outside of the adjustment shaft 380. Specifically, the driving gear is a bevel gear structure.

[0096] The driven gear is coaxially fixedly sleeved on the lower end of the adjusting screw 390; specifically, the driven gear is a bevel gear structure and is meshed with the driving gear.

[0097] The transmission component includes a connecting rod 340 and a driving rod 350. The length direction of the connecting rod 340 is perpendicular to the axis of the adjusting shaft 380. A mounting groove is provided on the side wall of one end of the connecting rod 340. A mounting rod is movably arranged in the mounting groove. The length direction of the mounting rod is parallel to the axis of the adjusting shaft 380, and a sliding guide is formed between the mounting rod and the mounting groove along the length direction of the connecting rod 340.

[0098] The upper side wall of the adjusting rod 330 is provided with a linkage hole, and the adjusting rod 330 is coaxially sleeved on the outside of the mounting rod through the linkage hole.

[0099] The driving rod 350 is arranged vertically and movably mounted on the adjustment frame 370 , and the driving rod 350 and the adjustment frame 370 form a sliding guide fit in the vertical direction.

[0100] A driving hole is formed on the lower end surface of the driving rod 350 in the vertical direction, and a driving nut is disposed in the driving hole.

[0101] The upper end of the adjusting screw rod 390 extends into the driving hole and forms a threaded connection with the driving nut provided in the driving hole.

[0102] The upper end of the driving rod 350 is hinged to the middle end of the connecting rod 340 , and the hinge axis formed by the hinge between the driving rod 350 and the connecting rod 340 is parallel to the axis of the adjusting shaft 380 .

[0103] During the actual working process of the flow regulating component: when the fluid output flow rate needs to be reduced, the regulating handle 360 is manually rotated, and the regulating handle 360 drives the regulating shaft 380 to rotate around its own axis. The regulating shaft 380 drives the regulating screw 390 to rotate around its own axis under the common transmission of the driving gear and the driven gear. The regulating screw 390 rotates and drives the driving rod 350 to move vertically upward through the cooperation of the driving nut set in the driving hole.

[0104] The driving rod 350 moves upward and drives the adjusting rod 330 to move upward through the mounting rod set in the mounting groove. The adjusting rod 330 moves upward and simultaneously drives the sealing piston 320 and the adjusting piston 310 to move upward synchronously. When the adjusting piston moves upward, the opening of the flow limiting hole set on the flow limiting cylinder 122 is reduced, and the output flow rate of the fluid becomes smaller.

[0105] When the fluid output flow rate needs to be increased, the adjustment handle 360 is manually rotated in the reverse direction, the opening of the flow limiting hole provided on the flow limiting cylinder 122 is enlarged, and the fluid output flow rate is increased.

[0106] The pressure control assembly 200 includes a pressure control tube 210, a pressure control valve, and a pressure regulating valve 220. The pressure control valve is used to receive the pressure of the pressure regulating nozzle 134 and drive the output flow of the fluid to be stable through the regulating piston 320. The pressure control valve includes a control valve body 230, a pressure control piston 260, and a pressure regulating rod 250. The control valve body 230 is a cylindrical barrel structure with an open upper end and a closed lower end, and the control valve body 230 is fixedly mounted on the regulating frame 370.

[0107] A sealing cover 240 is installed at the upper opening of the control valve body 230 . The sealing cover 240 is provided with a plurality of vent holes connected to the interior of the control valve body 230 .

[0108] The pressure control piston 260 is a cylindrical block structure and is coaxially movably installed in the control valve body 230. The pressure control piston 260 and the inner cavity of the control valve body 230 form a sealed sliding guide fit in the vertical direction.

[0109] A pressure control spring 270 is provided between the pressure control piston 260 and the control valve body 230. One end of the pressure control spring 270 abuts against the pressure control piston 260 and the other end abuts against the control valve body 230. The elastic force of the pressure control spring 270 drives the pressure control piston 260 to move vertically upward.

[0110] The pressure regulating rod 250 is arranged vertically, and the lower end of the pressure regulating rod 250 passes through the sealing cover 240 and extends into the control valve body 230 and is connected to the upper end surface of the pressure control piston 260. A control hole is opened on the upper end side wall of the pressure regulating rod 250.

[0111] The above-mentioned connecting rod 340 is provided with a control groove at one end away from the adjusting rod 330, and a control rod is movably installed in the control groove and a sliding guide is formed between the two along the length direction of the connecting rod 340. The length direction of the control rod is parallel to the axis of the adjusting shaft 380; specifically, the above-mentioned adjusting rod 250 is coaxially sleeved on the outside of the control rod through the control hole.

[0112] The lower end surface of the control valve body 230 is provided with an air guide nozzle connected to the inside of the control valve body 230 .

[0113] The pressure regulating valve 220 is arranged between the air guide nozzle and the pressure control tube 210. The pressure regulating valve 220 includes a pressure regulating valve body 221, a pressure regulating handle 226, and a pressure regulating valve core 224. The pressure regulating valve body 221 is a cylindrical shell structure with one end open and the other end closed, and the center line of the pressure regulating valve body 221 is parallel to the axis of the adjusting shaft 380.

[0114] A second communication nozzle 223 is vertically mounted on the outer circumferential surface of the regulating valve body 221 , and the second communication nozzle 223 is connected to the inner cavity of the regulating valve body 221 .

[0115] A connecting nozzle 1 222 is vertically installed downward on the outer circumferential surface of the regulating valve body 221, and the connecting nozzle 1 222 is connected to the inner cavity of the regulating valve body 221; specifically, the connecting nozzle 1 222 and the connecting nozzle 2 223 are coaxially arranged.

[0116] A regulating valve core 224 for controlling the size of the opening at the connection between the connecting nozzle 1 222 and the connecting nozzle 2 223 is movably installed in the regulating valve body 221. The regulating valve core 224 is a cylindrical block structure and is coaxially arranged with the regulating valve body 221 and the regulating valve core 224 rotates around its own axis.

[0117] A communication hole for connecting the first communication nozzle 222 and the second communication nozzle 223 is provided on the outer circumferential surface of the regulating valve core 224 .

[0118] A blocking plate 225 is installed at the opening of the regulating valve body 221 .

[0119] The pressure regulating handle 226 is a circular disc structure and is located on the side of the sealing plate 225 away from the regulating valve body 221 . The regulating handle 226 and the regulating valve body 221 are coaxially arranged and a transmission shaft is provided between the regulating handle 226 and the regulating valve core 224 .

[0120] The axis of the transmission shaft is parallel to the axis of the adjustment handle 226 , one end of the transmission shaft is connected to the adjustment handle, and the other end passes through the blocking plate 225 and extends into the adjustment valve body 221 and is coaxially connected to the adjustment valve core 224 .

[0121] The pressure control tube 210 is disposed between the pressure regulating nozzle 134 and the first connecting nozzle 222 . One end of the pressure control tube 210 is connected to the pressure regulating nozzle 134 , and the other end is connected to the connecting nozzle 222 .

[0122] The purpose of setting the pressure regulating valve 220 in the present invention is that during the pressure control process of the pressure regulating valve, pressure fluctuations can easily cause impact damage to the pipeline. The setting of the pressure regulating valve 220 can reduce the impact damage to the pipeline during pressure fluctuations, making the equipment operation more stable.

[0123] During the actual working process of the pressure control component 200: when the fluid flows from the connecting pipe 132 to the regulating pipe 133, a negative pressure is formed at the connection point between the regulating nozzle 134 and the connecting pipe 132. At this time, the atmospheric pressure applies a downward pressure to the pressure control piston 260 through the vent hole provided on the sealing cover 240, and drives the pressure control piston 260 to overcome the spring force of the pressure control spring 270 and move vertically downward.

[0124] The pressure control piston 260 moves downward and drives the pressure regulating rod 250 to move downward synchronously. When the pressure regulating rod 250 moves downward, it drives the control rod to slide in the control groove provided on the connecting rod 340 and applies a downward pulling force to the end of the connecting rod 340 close to the pressure regulating rod 250 through the control rod. Under the action of the pulling force, the connecting rod 340 drives the installation rod to slide in the installation groove provided on the connecting rod 340 through the hinge shaft formed at the hinge of the connecting rod 340 and the driving rod 350. The regulating rod 330 is driven to move upward, and the regulating rod 330 moves downward and drives the regulating piston 310 and the sealing piston 320 to move upward synchronously. As the regulating piston 310 moves upward, the opening of the flow-limiting hole is reduced and the flow rate of the fluid to the connecting pipe 132 is reduced until the regulating piston 310 and the pressure-control piston 260 reach a new equilibrium point. At this time, the fluid pressure in the liquid outlet pipe 140 remains unchanged. According to Bernoulli's principle, the flow rate of the fluid in the liquid outlet pipe 140 remains unchanged and a constant flow rate is maintained for output outward.

[0125] Bernoulli adaptive constant flow valve in actual working process:

[0126] The fluid flows from the liquid inlet pipe 110 and flows into the regulating pipe 1 131 through the liquid guide hole provided in the liquid guide housing 121, flows into the connecting pipe 132 through the regulating pipe 131, and then flows into the liquid outlet pipe 140 through the regulating pipe 2 133 and flows out from the liquid outlet pipe 140;

[0127] When the fluid flows from the connecting pipe 132 to the second regulating pipe 133, a negative pressure is formed at the connection between the regulating nozzle 134 and the connecting pipe 132, and the pressure on the lower end surface of the pressure-controlling piston 260 through the pressure-controlling pipe 210 is lower than the pressure on the upper end surface of the pressure-controlling piston. At this time, the atmospheric pressure exerts a downward pressure on the pressure-controlling piston 260 through the vent hole provided on the sealing cover 240, and drives the pressure-controlling piston 260 to overcome the spring force of the pressure-controlling spring 270 and move vertically downward. The pressure-controlling piston 260 moves downward and drives the pressure-regulating rod 250 to move downward synchronously.

[0128] When the pressure regulating rod 250 moves downward, the control rod is driven to slide in the control groove provided on the connecting rod 340 and a downward pulling force is applied to the end of the connecting rod 340 close to the pressure regulating rod 250 through the control rod. Under the action of the pulling force, the connecting rod 340 drives the installation rod to slide in the installation groove provided on the connecting rod 340 through the hinge axis formed at the hinge point of the connecting rod 340 and the driving rod 350. When the installation rod slides, it also drives the adjusting rod 330 to move upward. The adjusting rod 330 moves downward and drives the adjusting piston 310 and the sealing piston 320 to move upward synchronously. When the adjusting piston 310 moves upward, the opening of the flow limiting hole is reduced and the flow rate of the fluid flowing into the connecting pipe 132 is reduced until the adjusting piston 310 and the pressure control piston 260 reach a new equilibrium point. At this time, the fluid pressure in the liquid outlet pipe 140 remains unchanged. According to Bernoulli's principle, the flow rate of the fluid in the liquid outlet pipe 140 remains unchanged and a constant flow rate is maintained for output outward.

[0129] When the fluid output flow rate needs to be reduced, the adjustment handle 360 is manually rotated, and the adjustment handle 360 drives the adjustment shaft 380 to rotate around its own axis. The adjustment shaft 380 drives the adjustment screw 390 to rotate around its own axis under the common transmission of the driving gear and the driven gear. The rotation of the adjustment screw 390 drives the driving rod 350 to move vertically upward through the cooperation of the driving nut set in the driving hole.

[0130] The driving rod 350 moves upward and drives the adjusting rod 330 to move upward via the mounting rod disposed in the mounting groove. The adjusting rod 330 moves upward and simultaneously drives the sealing piston 320 and the adjusting piston 310 to move upward synchronously. As the adjusting piston moves upward, the opening of the flow limiting hole disposed on the flow limiting cylinder 122 decreases, and the output flow rate of the fluid decreases.

[0131] When the fluid output flow rate needs to be increased, the adjustment handle 360 is manually rotated in the opposite direction. The adjustment handle 360 drives the adjustment shaft 380 to rotate around its own axis. The adjustment shaft 380 drives the adjustment screw 390 to rotate around its own axis under the common transmission of the driving gear and the driven gear. The rotation of the adjustment screw 390 drives the driving rod 350 to move vertically downward through the cooperation of the driving nut set in the driving hole.

[0132] The driving rod 350 moves downward and drives the adjusting rod 330 to move downward through the mounting rod set in the mounting groove. The adjusting rod 330 moves downward and simultaneously drives the sealing piston 320 and the adjusting piston 310 to move downward synchronously. When the adjusting piston moves downward, the opening of the flow limiting hole set on the flow limiting cylinder 122 increases, and the output flow rate of the fluid becomes larger.

[0133] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any direct application of the above-described concepts and technical solutions to other situations without modification, fall within the scope of protection of the present invention.

Claims

1. Bernoulli adaptive constant flow valve, characterized in that, It includes a valve housing, on which a pressure control assembly and a flow regulating member are installed. The valve housing is used for transmitting fluid and installing equipment components. The pressure control assembly is used to control the constant output of fluid flow, and the flow regulating member is used to control the size of the fluid flow output. The valve housing includes a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe and the liquid outlet pipe have the same structure and are symmetrically distributed along the vertical direction. A limited flow shell is provided between the liquid inlet pipe and the liquid outlet pipe. The flow-limiting shell is composed of a liquid-guiding shell and a flow-limiting cylinder. The liquid-guiding shell is a rectangular block structure, and the length direction of the liquid-guiding shell is parallel to the flow direction of the fluid. The end surface of the liquid-guiding shell close to the liquid inlet pipe is provided with a liquid-guiding hole along its length. The liquid inlet pipe is installed on the liquid-guiding shell and connected to the liquid-guiding hole. The top end surface of the flow-limiting shell is provided with an adjustment hole connected to the liquid guide hole in the vertical direction, and a flow-limiting cylinder is sleeved in the adjustment hole; The flow limiting tube is a cylindrical tube structure with an open upper end and a closed lower end. A flow limiting hole that penetrates the diameter of the flow limiting tube is opened along its own radial direction on the outer circumference of the flow limiting tube. The flow limiting hole and the liquid guide hole are coaxially arranged and connected to each other. The lower end surface of the flow limiting tube is located below the liquid guide hole. The upper end of the flow limiting cylinder is provided with a mounting cover, the mounting cover matches the upper end opening of the flow limiting cylinder and is installed at the upper end opening of the flow limiting cylinder, and the mounting cover is provided with a connection hole connected to the flow limiting cylinder, and the connection holes are provided in a plurality; A regulating pipe is provided between the flow-limiting shell and the liquid outlet pipe. The regulating pipe includes a regulating pipe 1, a connecting pipe, and a regulating pipe 2. The connecting pipe is coaxially arranged with the liquid inlet pipe. A pressure regulating nozzle connected to the liquid inlet pipe is provided on the upper end wall of the liquid inlet pipe. The pressure regulating nozzle is arranged horizontally and the height of the pressure regulating nozzle decreases along the flow direction of the fluid; The regulating pipe 1 and the regulating pipe 2 have the same structure and are symmetrically distributed at both ends of the connecting pipe and are connected to the connecting pipe; The regulating pipe 1 is a bucket-shaped shell structure with openings at both ends and is coaxially arranged with the connecting pipe. The vertical cross-sectional area of the regulating pipe 1 decreases along the flow direction of the fluid. The liquid outlet pipe is located on the side of the regulating pipe 2 away from the connecting pipe and is connected to the regulating pipe; The flow regulating component includes a regulating assembly and a driving assembly. The driving assembly is used to provide power to the regulating assembly, and the regulating assembly is used to control the opening size of the flow limiting hole provided on the flow limiting cylinder. The adjusting assembly includes an adjusting piston, a sealing piston, and an adjusting rod. The adjusting piston is used to control the opening size of the flow limiting port. The adjusting piston is a cylindrical block structure and is coaxially arranged in the flow limiting cylinder. A sealed sliding guide fit is formed between the adjusting piston and the inner cavity of the flow limiting cylinder in a vertical direction. The initial position of the adjusting piston is located below the flow limiting hole and the maximum horizontal height of the adjusting piston is equal to the minimum horizontal height of the flow limiting hole.

2. The Bernoulli adaptive constant flow valve according to claim 1, characterized in that: The sealing piston is a cylindrical block structure and is coaxially movably arranged in the flow limiting cylinder. The sealing piston and the inner cavity of the flow limiting cylinder form a vertical sealed sliding guide fit and the sealing piston is arranged above the regulating piston. The minimum horizontal height of the sealing piston is greater than the maximum horizontal height of the flow limiting hole. A mounting hole is coaxially provided on the sealing piston; The adjusting rod is arranged vertically and coaxially fixedly sleeved in the mounting hole provided on the sealing piston, and the upper end of the adjusting rod passes through the mounting cover provided at the opening of the flow limiting cylinder and extends to the top of the mounting cover; The lower end of the regulating rod extends to the bottom of the sealing piston and is fixedly connected to the upper end surface of the regulating piston.

3. The Bernoulli adaptive constant flow valve according to claim 2, characterized in that: The driving assembly includes a driving component and a transmission component. The driving component is used to transmit power to the transmission assembly, and the transmission component is used to drive the adjusting rod to move in the vertical direction. The driving component includes an adjustment frame, an adjustment handle, and an adjustment screw. The adjustment frame is fixedly mounted on the mounting cover, and an adjustment shaft is movably mounted on the adjustment frame. The axis of the adjustment shaft is perpendicular to the axis of the adjustment rod and the adjustment shaft rotates around its own axis. The adjustment handle is a circular disc structure and is coaxially fixedly mounted on the driving end of the adjustment shaft; The adjusting screw is arranged vertically, and a transmission member is provided between the adjusting screw and the adjusting shaft, and power is transmitted between the two through the transmission member; The transmission member includes a driving gear and a driven gear. The driving gear is coaxially fixedly sleeved on the outside of the adjusting shaft. The driving gear is a bevel gear structure. The driven gear is coaxially fixedly sleeved on the lower end of the adjusting screw rod. The driven gear is a bevel gear structure and is meshed with the driving gear.

4. The Bernoulli adaptive constant flow valve according to claim 3, characterized in that: The transmission component includes a connecting rod and a driving rod. The length direction of the connecting rod is perpendicular to the axis of the adjusting shaft. A mounting groove is provided on a side wall of one end of the connecting rod. A mounting rod is movably provided in the mounting groove. The length direction of the mounting rod is parallel to the axis of the adjusting shaft, and a sliding guide is formed between the mounting rod and the mounting groove along the length direction of the connecting rod. The upper end side wall of the adjusting rod is provided with a linkage hole and the adjusting rod is coaxially sleeved on the outside of the mounting rod through the linkage hole; The driving rod is arranged vertically and movably mounted on the adjustment frame, and the driving rod and the adjustment frame form a sliding guide fit in the vertical direction; A driving hole is formed on the lower end surface of the driving rod in the vertical direction, and a driving nut is arranged in the driving hole; The upper end of the adjusting screw rod extends into the driving hole and forms a threaded connection with the driving nut provided in the driving hole; The upper end of the driving rod is hinged to the middle end of the connecting rod, and the hinge axis formed at the hinge of the driving rod and the connecting rod is parallel to the axis of the adjusting shaft.

5. The Bernoulli adaptive constant flow valve according to claim 4, characterized in that: The pressure control assembly includes a pressure control tube, a pressure control valve, and a pressure regulating valve. The pressure control valve is used to receive the pressure of the pressure regulating nozzle and drive the output flow of the fluid to stabilize through the regulating piston. The pressure control valve includes a control valve body, a pressure control piston, and a pressure regulating rod. The control valve body is a cylindrical structure with an open upper end and a closed lower end, and the control valve body is fixedly mounted on the regulating frame. A sealing cover is installed at the upper opening of the control valve body, and the sealing cover is provided with a plurality of vent holes connected with the control valve body; The pressure control piston is a cylindrical block structure and is coaxially movably installed in the control valve body, and the pressure control piston and the inner cavity of the control valve body form a sealed sliding guide fit in the vertical direction; A pressure control spring is provided between the pressure control piston and the control valve body, one end of the pressure control spring abuts against the pressure control piston and the other end abuts against the control valve body, and the elastic force of the pressure control spring drives the pressure control piston to move vertically upward; The pressure regulating rod is arranged vertically, the lower end of the pressure regulating rod passes through the sealing cover and extends along the control valve body and is connected to the upper end surface of the pressure control piston, and a control hole is opened on the upper end side wall of the pressure regulating rod; The end of the linkage rod facing away from the adjustment rod is provided with a control groove, the control rod is movably mounted in the control groove and the two form a sliding guide along the length direction of the linkage rod. The length direction of the control rod is parallel to the axis of the adjustment shaft. The adjustment rod is coaxially sleeved on the outside of the control rod through the control hole. The lower end surface of the control valve body is provided with an air guide nozzle connected to the control valve body.

6. The Bernoulli adaptive constant flow valve according to claim 5, characterized in that: The pressure regulating valve is arranged between the air guide nozzle and the pressure control tube. The pressure regulating valve includes a pressure regulating valve body, a pressure regulating handle, and a pressure regulating valve core. The pressure regulating valve body is a cylindrical shell structure with one end open and the other end closed, and the center line of the pressure regulating valve body is parallel to the axis of the regulating shaft. A second communication nozzle is vertically mounted on the outer circumferential surface of the pressure regulating valve body and is connected to the inner cavity of the pressure regulating valve body; A communication nozzle 1 is vertically mounted downward on the outer circumferential surface of the pressure regulating valve body and is connected to the inner cavity of the pressure regulating valve body. The communication nozzle 1 and the communication nozzle 2 are coaxially arranged. A regulating valve core is movably installed in the pressure regulating valve body to control the opening size of the connection between the connecting nozzle 1 and the connecting nozzle 2. The regulating valve core is a cylindrical block structure and is coaxially arranged with the pressure regulating valve body and rotates around its own axis.

7. The Bernoulli adaptive constant flow valve according to claim 6, characterized in that: The outer circumferential surface of the regulating valve core is provided with a communication hole for connecting the communication nozzle 1 and the communication nozzle 2; A blocking plate is installed at the opening of the pressure regulating valve body; The pressure regulating handle is a circular disc structure and is located on the side of the sealing plate away from the pressure regulating valve body. The regulating handle and the pressure regulating valve body are coaxially arranged and a transmission shaft is provided between the regulating handle and the regulating valve core. The axis of the transmission shaft is parallel to the axis of the regulating handle, one end of the transmission shaft is connected to the regulating handle, and the other end passes through the blocking plate and extends into the pressure regulating valve body and is coaxially connected to the regulating valve core; The pressure control tube is arranged between the pressure regulating nozzle and the connecting nozzle 1, one end of the pressure control tube is connected to the pressure regulating nozzle, and the other end is connected to the connecting nozzle.

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