Axial gas-liquid mixed pulse generating valve

Abstract

The invention discloses an axial gas-liquid mixed pulse generating valve, and relates to the technical field of electric control valves. It comprises a tube shell body, in which a stator valve plate is arranged; the stator valve plate is provided with at least one A flow hole; the side wall of the tube shell body is provided with at least one B flow hole; the B flow hole and the A flow hole are arranged alternately in the circumferential direction; a rotor valve body, the rotor valve body comprises a rotor valve plate and a rotor core tube; the rotor valve plate is provided with an A flow channel corresponding to and matching the A flow hole one by one; the side wall of the rotor core tube is provided with a B flow channel corresponding to and matching the B flow hole one by one in the circumferential direction; a driving mechanism, the driving mechanism is used to drive the rotor valve body to rotate; under the condition that the rotor valve body rotates, when the A flow hole is connected to the A flow channel, the rotor core tube closes the B flow hole; when the B flow hole is connected to the B flow channel, the rotor valve plate closes the A flow hole. The invention can generate pulse pressurized water flow in the axial direction of the pipeline, save energy and water, and has a strong impact force.

Description

Technical Field

[0001] The invention relates to the technical field of electric control valves, in particular to an axial gas-liquid mixed pulse generating valve. Background Art

[0002] A gas-liquid mixing valve is a device used to mix gas and liquid evenly. Its principle is mainly to use a special structural design to allow liquid and gas to fully contact in the mixing chamber inside the valve. Most gas-liquid mixing valves work through the Venturi effect. When the liquid flows through the contracted pipe part, the flow rate increases and the pressure decreases, thereby sucking the gas in and mixing with the liquid.

[0003] The purpose of traditional gas-liquid mixing valves is to achieve full mixing of gas and liquid. However, in some application scenarios, full mixing of gas and liquid is not required. Instead, the gas pressure is used to pressurize the liquid line, so that the kinetic energy of the water flowing out of the pipe is increased, the impact capacity is improved, and the amount of water used is reduced. Since traditional gas-liquid mixing valves cannot meet the pressure-increasing requirements, they are generally not used for pressure-increasing.

[0004] In a waterway, if there is an air column in the flow direction, when the water flow in the downstream direction of the air column approaches the outlet of the waterway, the water pressure at the outlet decreases, so the air column will push the water flow at the downstream outlet toward the outlet, accelerating the water flow. If there is a stable air column in the waterway, the water flow ejected from the outlet will show a pulsed pressurized water flow. This pulsed pressurized water flow has a large impact force and uses less water. At present, there is no pump and valve device that can specifically generate this pulsed pressurized water flow. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an axial gas-liquid mixed pulse generating valve in view of the above-mentioned technical deficiencies, which can generate pulse pressurized water flow in the axial direction of the pipeline, save energy and water, and has strong impact force.

[0006] The technical solution adopted by the present invention is: to provide an axial gas-liquid mixed pulse generating valve, comprising a tube shell body, wherein a stator valve plate is arranged in the tube shell body; the stator valve plate is provided with at least one A flow hole in the axial direction surrounding the tube shell body; in the downstream direction of the stator valve plate, the side wall of the tube shell body is provided with at least one B flow hole in the circumferential direction; the B flow hole and the A flow hole are arranged alternately in the circumferential direction; The rotor valve body comprises a rotor valve plate and a rotor core tube; the rotor valve plate is fixedly connected to the rotor core tube; the rotor valve plate is provided with an A flow channel corresponding to and cooperating with the A flow hole; the side wall of the rotor core tube is provided with a B flow channel corresponding to and cooperating with the B flow hole in a circumferential direction; A driving mechanism, wherein the driving mechanism is used to drive the rotor valve body to rotate; when the A flow hole is connected to the A flow channel, the rotor core tube closes the B flow hole; when the B flow hole is connected to the B flow channel, the rotor valve plate closes the A flow hole; A pressure storage tank, wherein an elastic airbag is encapsulated in the pressure storage tank, and compressed gas is encapsulated in the elastic airbag; the area between the inner cavity of the pressure storage tank and the outside of the elastic airbag is a liquid storage area; the liquid storage area is connected to the inner cavity of the shell body through a pipeline, and the connecting hole between the two is located in the upstream direction of the stator valve plate.

[0007] To further optimize the technical solution, an annular gas collecting hood is installed on the outer wall of the tube shell body; the B flow hole is located in the enclosed space of the annular gas collecting hood; and an air path connector for connecting with an external air source is provided on the annular gas collecting hood.

[0008] To further optimize the technical solution, the driving mechanism is a reduction motor; the reduction motor is coaxially installed in the tube shell body; the output shaft of the reduction motor is transmission coupled with the rotor valve plate; the wire seal of the reduction motor passes through the side wall of the tube shell body and is led to the outside.

[0009] To further optimize the technical solution, the driving mechanism is a digital servo; the digital servo is coaxially installed in the tube shell body; the output shaft of the digital servo is transmission coupled with the rotor valve plate; the wire seal of the digital servo passes through the side wall of the tube shell body and is led to the outside.

[0010] To further optimize the technical solution, both ends of the tube shell body are provided with screw-button joints for connecting with upstream and downstream waterways.

[0011] To further optimize the technical solution, the rotor valve plate and the rotor core tube are both made of PTFE.

[0012] To further optimize the technical solution, a one-way valve that conducts in one direction toward the annular gas collecting hood is installed in the gas path connector.

[0013] In the technical solution recorded in the present invention, when the rotor valve plate rotates to the point where the A flow channel is connected to the A flow hole, the rotor core tube and the tube shell body remain in a sealed state, and at this time, the water flows through the A flow channel and the A flow hole into the downstream waterway; when the rotor valve plate rotates to the point where it is in a sealed state with the stator valve plate, the B flow channel of the rotor core tube is connected to the B flow hole, the water flow in the upstream waterway is cut off, and due to the flow inertia of the water flow, a water hammer effect is generated, and under the water hammer effect, the water flows into the pressure storage tank to compress the compressed gas in the elastic airbag to store energy. At the same time, the water flow in the downstream waterway continues to flow due to inertia, and the air enters the downstream waterway through the B flow channel and the B flow hole; when the rotor valve plate rotates again to connect the A flow channel and the A flow hole, the rotor core tube remains sealed with the tube shell body again, so the water will not leak from the B flow hole; at this time, the water flow in the upstream waterway and the water stored in the pressure storage tank enter the downstream waterway through the A flow channel and the A flow hole. The water flow pressure at this time is the combination of the upstream water flow pressure and the pressure release pressure of the pressure storage tank, so it plays a boosting role; in addition, the air column will also be subjected to water pressure after being formed in the downstream waterway and is in a compressed state; when the water flow in the downstream direction of the air column approaches the waterway outlet, due to the reduction of water pressure at the outlet, the air column will push the water flow at the downstream outlet toward the outlet, accelerating the water flow and playing a secondary boosting role.

[0014] The rotor valve plate and the rotor core tube are reciprocated and connected, so that there is a stable air column at a certain distance in the downstream waterway, and the water jetted from the outlet shows a pulse supercharged water flow. This pulse supercharged water flow has a large impact force and uses less water.

[0015] Other technical effects of the present invention will be gradually clarified in the development of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Figure 1 Sectional view; Figure 3 It is a schematic diagram of the decomposition of the present invention; Figure 4 A schematic diagram comparing radial gas-liquid mixing and axial gas-liquid mixing; In the figure, 1. tube shell body; 2. stator valve plate; 3. A flow hole; 4. B flow hole; 5. rotor valve body; 6. rotor valve plate; 7. rotor core tube; 8. A flow channel; 9. B flow channel; 10. driving mechanism; 11. pressure storage tank; 12. elastic air bag; 13. liquid storage area; 14. annular air collecting cover; 15. air path connector; 16. wire; 17. screw buckle connector; 18. one-way valve; 19. radial gas-liquid mixed water flow; 20. axial gas-liquid mixed water flow; 21. air column; 22. water column; 23. filter screen. DETAILED DESCRIPTION

[0017] like Figure 1 , Figure 2 , Figure 3 As shown, an axial gas-liquid mixed pulse generating valve is provided, comprising: A tube shell body 1, wherein a stator valve plate 2 is arranged in the tube shell body 1; the stator valve plate 2 is provided with at least one A flow hole 3 in the axial direction around the tube shell body 1; in the downstream direction of the stator valve plate 2, the side wall of the tube shell body 1 is provided with at least one B flow hole 4 in the circumferential direction; the B flow hole 4 and the A flow hole 3 are staggered in the circumferential direction; The rotor valve body 5 includes a rotor valve plate 6 and a rotor core tube 7; the rotor valve plate 6 is fixedly connected to the rotor core tube 7; the rotor valve plate 6 is provided with an A flow channel 8 corresponding to the A flow hole 3; the side wall of the rotor core tube 7 is provided with a B flow channel 9 corresponding to the B flow hole 4 in a circumferential direction; The driving mechanism 10 is used to drive the rotor valve body 5 to rotate; when the A flow hole 3 is connected to the A flow channel 8, the rotor core tube 7 closes the B flow hole 4; when the B flow hole 4 is connected to the B flow channel 9, the rotor valve plate 6 closes the A flow hole 3; A pressure storage tank 11 is provided with an elastic airbag 12 encapsulated therein, and compressed gas is encapsulated in the elastic airbag 12; the area between the inner cavity of the pressure storage tank 11 and the outside of the elastic airbag 12 is a liquid storage area 13; the liquid storage area 13 is connected to the inner cavity of the shell body 1 through a pipeline, and the connecting hole between the two is located in the upstream direction of the stator valve plate 2.

[0018] like Figure 4 As shown, the axial gas-liquid mixing in this embodiment refers to the mixed fluid of air columns and water columns with stable and continuous spacing in the length direction of the downstream waterway; axial gas-liquid mixing is a concept relative to radial gas-liquid mixing; radial gas-liquid mixing refers to the uniform mixing of air in the water flow in the form of tiny bubbles under the action of high-speed shear. The radial gas-liquid mixed water flow flows out of the water outlet and impacts the surface of the object with a small and gentle impact force, and can prevent water droplets from splashing. The axial gas-liquid mixed water flow shows a strong pulse jet phenomenon when it flows out of the water outlet. The main reasons are two aspects: 1. The air column can be compressed to store energy. When the water column approaches the water outlet, the pressure difference at both ends of the air column increases, and the expansion of the air column pushes the end water column to accelerate; 2. The air column has a small density relative to the water column, small inertia, and small flow resistance; when the air column is quickly discharged from the water outlet, the pressure on the downstream side of the water column flowing upstream of the air column drops rapidly, so the water column will also be in an accelerated discharge state.

[0019] The pressure storage tank 11 has two functions. On the one hand, due to the reciprocating connection between the rotor valve plate 6 and the stator valve plate 2, a strong water hammer effect will be generated in the upstream waterway, which may easily cause the valve body or pipeline to rupture and damage. The pressure storage tank 11 can absorb the pulse impact caused by the water hammer effect. On the other hand, when the rotor valve plate 6 and the stator valve plate 2 are connected, the stored energy of the pressure storage tank 11 can be fully utilized to increase the pressure of the water flow and improve the water pressure.

[0020] To further optimize this embodiment, an annular gas collecting hood 14 is installed on the outer wall of the tube shell body 1; the B flow hole 4 is located in the enclosed space of the annular gas collecting hood 14; and the annular gas collecting hood 14 is provided with an air path connector 15 for connecting with an external air source.

[0021] When the downstream waterway is long or connected to a pressure load, simply using the flow inertia of the downstream waterway to inhale air will cause a decrease in flow rate or even backflow. In this case, connecting to an external air source can introduce high-pressure air, which can compensate for the decrease in flow rate or further increase the pressure of the water flow.

[0022] To further optimize this embodiment, the driving mechanism 10 is a reduction motor; the reduction motor is coaxially installed in the tube shell body 1; the output shaft of the reduction motor is transmission coupled with the rotor valve plate 6; the wire 16 of the reduction motor is sealed and passes through the side wall of the tube shell body 1 to the outside.

[0023] To further optimize this embodiment, the driving mechanism 10 is a digital servo; the digital servo is coaxially installed in the tube shell body 1; the output shaft of the digital servo is transmission coupled with the rotor valve plate 6; the wire 16 of the digital servo is sealed and passes through the side wall of the tube shell body 1 to the outside.

[0024] The difference between a reduction motor and a digital servo is that a reduction motor rotates continuously at a stable speed, while a digital servo rotates intermittently at a fixed rotation angle. In terms of the characteristics of the water flow, when the reduction motor drives the rotor valve body 5 to rotate, the A flow hole 3 and the B flow hole 4 are gradually closed at a constant speed, so there is a long blending distance between the boundary of the air column and the water column. When the digital servo drives the rotor valve body 5 to rotate, the A flow hole 3 and the B flow hole 4 are mainly in a fully closed and fully open state, and the duty cycle of gradual closing and gradual opening is very small, so the boundary between the air column and the water column is more obvious, and the pulse effect is stronger.

[0025] To further optimize this embodiment, both ends of the tube shell body 1 are provided with screw-button joints 17 for connecting with upstream and downstream waterways.

[0026] To further optimize this embodiment, the rotor valve plate 6 and the rotor core tube 7 are both made of PTFE.

[0027] The rotor valve plate 6 and the rotor core tube 7 of this embodiment are friction loss parts, and although they are used in a wet environment, they still need to be replaced regularly. The PTFE material is wear-resistant and corrosion-resistant, which is conducive to extending the service life of the valve body.

[0028] To further optimize this embodiment, a one-way valve 18 is installed in the gas path connector 15 to conduct one-way flow in the direction of the annular gas collecting hood 14 .

[0029] When the rotor core tube 7 is worn and the seal fails, or when the downstream water channel is over-pressured, water will flow through the B flow hole 4 into the external air source, causing damage to the air source. The function of the one-way valve 18 is to protect the external air source and prevent water from entering the external air source.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An axial gas-liquid mixed pulse generating valve, characterized in that: include A tube shell body, wherein a stator valve plate is arranged in the tube shell body; the stator valve plate is provided with at least one A flow hole in the axial direction around the tube shell body; in the downstream direction of the stator valve plate, the side wall of the tube shell body is provided with at least one B flow hole in the circumferential direction; the B flow hole and the A flow hole are arranged alternately in the circumferential direction; The rotor valve body comprises a rotor valve plate and a rotor core tube; the rotor valve plate is fixedly connected to the rotor core tube; the rotor valve plate is provided with an A flow channel corresponding to and cooperating with the A flow hole; the side wall of the rotor core tube is provided with a B flow channel corresponding to and cooperating with the B flow hole in a circumferential direction; A driving mechanism, wherein the driving mechanism is used to drive the rotor valve body to rotate; when the A flow hole is connected to the A flow channel, the rotor core tube closes the B flow hole; when the B flow hole is connected to the B flow channel, the rotor valve plate closes the A flow hole; A pressure storage tank, wherein an elastic airbag is encapsulated in the pressure storage tank, and compressed gas is encapsulated in the elastic airbag; the area between the inner cavity of the pressure storage tank and the outside of the elastic airbag is a liquid storage area; the liquid storage area is connected to the inner cavity of the shell body through a pipeline, and the connecting hole between the two is located in the upstream direction of the stator valve plate.

2. The axial gas-liquid mixed pulse generating valve according to claim 1, characterized in that : An annular gas collecting hood is installed on the outer wall of the tube shell body; the B flow hole is located in the enclosed space of the annular gas collecting hood; the annular gas collecting hood is provided with an air path connector for connecting with an external air source.

3. The axial gas-liquid mixed pulse generating valve according to claim 1, characterized in that: The driving mechanism is a reduction motor; the reduction motor is coaxially installed in the tube shell body; the output shaft of the reduction motor is transmission coupled with the rotor valve plate; the wire of the reduction motor is sealed and passes through the side wall of the tube shell body to the outside.

4. The axial gas-liquid mixed pulse generating valve according to claim 1, characterized in that: The driving mechanism is a digital steering gear; the digital steering gear is coaxially installed in the tube shell body; the output shaft of the digital steering gear is coupled with the rotor valve plate; the wire of the digital steering gear is sealed and passed through the side wall of the tube shell body to the outside According to the axial gas-liquid mixed pulse generating valve according to claim 1, it is characterized in that both ends of the tube shell body are provided with screw buckle joints for connecting with upstream and downstream waterways.

5. The axial gas-liquid mixed pulse generating valve according to claim 1, characterized in that: The rotor valve plate and the rotor core tube are both made of PTFE.

6. The axial gas-liquid mixed pulse generating valve according to claim 2, characterized in that A one-way valve is installed in the gas path joint to conduct one-way flow in the direction of the annular gas collecting hood.

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