High-pressure large-flow volute pump with anti-backflow structure

Abstract

This invention discloses a high-pressure, high-flow-rate vortex pump with an anti-backflow structure, relating to the field of vortex pump technology. It includes a motor, a housing, and pipelines. The pipelines include an inlet pipe and an outlet pipe. A rotating drum is disposed inside the housing, with its two ends connected to the motor and the inlet pipe, respectively. The rotating drum is a hollow structure. A Pitot tube is disposed inside the rotating drum, connected to the outlet pipe via the housing. The rotating drum consists of an outer ring and an inner ring. This invention creates a high-pressure liquid near the Pitot tube, thereby establishing a pressure difference between the inner and outer sides of the Pitot tube. Under the action of this pressure difference, the liquid inside the rotating drum can exit through the Pitot tube. Simultaneously, a sealing component and a clamping mechanism are provided at the pipeline connection points. These, along with the pressure generated by the liquid movement inside the pipeline, convert part of the pressure into pressure from the side plate against the pipeline flange. When liquid flows inside the pipeline, the pressure carried by the liquid itself is proportional to the pressure of the side plate against the pipeline flange.

Description

Technical Field

[0001] This invention relates to the field of vortex pump technology, specifically to a high-pressure, high-flow vortex pump with an anti-backflow structure. Background Technology

[0002] Swirl pumps, also known as rotary jet pumps or Pitot tube pumps, are a new type of small-flow, high-pressure pump with a unique structure and working principle, belonging to the category of extremely low specific speed pumps. Swirl pumps significantly outperform other types of pumps in terms of stable operation and service life. They are suitable for small-flow, high-head conveying, have a simple structure, small size, resulting in low maintenance, low maintenance costs, long service life, strong sealing reliability, and a smooth flow characteristic curve. Because swirl pumps meet the requirements of high pressure head and zero leakage, they have broad application prospects in industries such as rubber, petroleum, chemical, metallurgy, food, papermaking, and printing and dyeing.

[0003] During operation, existing vortex pumps, due to the structure of the Pitot tube, have a small cross-sectional area for the liquid to pass through at the Pitot tube inlet. This means that only a portion of the liquid can enter the Pitot tube after rotating once inside the drum. However, in the same amount of time, the output of existing vortex pumps is much smaller than that of other liquid transfer pumps. Summary of the Invention

[0004] The purpose of this invention is to provide a high-pressure, high-flow vortex pump with an anti-backflow structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-pressure, high-flow vortex pump with an anti-backflow structure, comprising a motor, a housing, and a pipeline, wherein the pipeline includes an inlet pipe and an outlet pipe, and a rotating drum is provided inside the housing, wherein the two ends of the rotating drum are respectively connected to the motor and the inlet pipe, the rotating drum is a hollow structure, and a Pitot tube is provided inside the rotating drum, wherein the Pitot tube is connected to the outlet pipe through the housing;

[0006] The drum consists of an outer ring and an inner ring. The inner ring is connected to the inlet pipe, and several guide vanes are arranged in a ring on the inner wall of the inner ring. Liquid enters the drum from the inlet pipe and flows axially from the outer periphery of the drum into the inner ring. Since the drum is connected to the motor and the guide vanes are arranged on both sides of the inner wall of the inner ring, the liquid is propelled by the guide vanes when the drum rotates at high speed, giving the liquid kinetic energy. The high-speed moving liquid moves from the inner ring to the outer ring. The inlet of the Pitot tube is located in the outer ring. During the movement of the liquid driven by the drum, some liquid leaves through the Pitot tube. The cross-sectional area of ​​the liquid passing through the Pitot tube gradually increases, and the liquid velocity gradually decreases, thereby converting the kinetic energy of the liquid into pressure energy. Finally, high-pressure liquid is discharged from the end of the outlet pipe.

[0007] Furthermore, the connection between the outer ring and the inner ring is a transition area. The distance between the middle parts of the transition area is smaller than the distance between the upper and lower ends. A guide channel is provided above the transition area. The guide channel is located inside the outer ring. A flow-dividing ring is provided inside the guide channel. An annular water tank is between the guide channel and the flow-dividing ring. The vertical cross-section of the annular water tank is U-shaped. Driven by the guide vanes and the motor, the liquid moves in the inner ring. Under the action of centrifugal force, the liquid will continuously move towards the area where the outer ring is located. Since there is a transition area between the outer ring and the inner ring, the gap of the transition area is smaller than the distance between other areas inside the drum. As a result, when the liquid passes through the transition area, the pressure of the liquid in the innermost part of the transition area is greater than the pressure of the liquid in the middle part of the inner ring.

[0008] After the liquid enters the outer ring, the liquid's movement path overlaps with the area where the Pitot tube is located. When the liquid moves to the inlet of the Pitot tube, the liquid pressure at the inlet of the Pitot tube is relatively high compared to the air pressure area inside the outer ring because the cross-section of the liquid at the inlet of the Pitot tube is small.

[0009] The Pitot tube inlet is located outside the guide channel and the diverting ring. The guide channel and the diverting ring work together to form an annular water tank. The diverting ring diverts the liquid at the Pitot tube inlet. One stream of liquid enters the annular water tank along one side wall of the diverting ring, while the other stream moves towards the inner ring along the other side wall. The two streams merge after leaving the diverting ring. The liquid inside the annular water tank moves towards the side where the Pitot tube inlet is located under the action of the guide channel. The two streams of liquid collide with each other in the transition area. The guide channel and the diverting ring form a Tesla valve-like structure, reducing the kinetic energy of the liquid in the outer ring moving into the inner ring.

[0010] Furthermore, a concave plate is provided above the pitot tube. The vertical cross-section of the concave plate is arc-shaped, and the opening direction of the arc is opposite to the water flow direction inside the outer ring. The structure of the concave plate is designed to increase the cross-sectional area for liquid to pass through at the inlet of the pitot tube. When the liquid moves inside the outer ring, when the liquid passes through the area of ​​the concave plate, the high-speed flowing liquid impacts the inner wall of the concave plate. Under the guidance of the concave plate, the liquid enters the pitot tube through the narrow neck.

[0011] Furthermore, the connection between the concave plate and the Pitot tube is a narrow neck, located in the middle of the transition region. The inner diameter of the narrow neck is smaller than the inner diameter of other areas of the Pitot tube, and one side of the outer wall of the Pitot tube is inclined. The Pitot tube's sidewall is designed such that its inclined sidewall is positioned in the direction of liquid movement. Driven by the guide plate, the liquid impacts the sidewall of the Pitot tube. Subsequently, guided by the inclined sidewall, the liquid moves towards the outer ring. The narrow neck, in conjunction with the concave plate, guide groove, and flow divider ring, creates high-pressure liquid near the inlet end of the narrow neck at the concave plate. Simultaneously, after passing through the narrow neck, the cross-sectional area of ​​the liquid within the Pitot tube gradually increases, thus creating a pressure difference at the narrow neck. Under the influence of this pressure difference, the liquid in the outer ring flows into the Pitot tube; conversely, the liquid inside the Pitot tube is difficult to move in the opposite direction of the pressure difference.

[0012] Furthermore, a sealing assembly is installed on the pipeline. The sealing assembly includes two side plates, the side walls of which are connected to the pipeline. The side plates are annular, and a rubber ring is provided between the side plates. The vertical cross-section of the rubber ring is V-shaped, and the inner diameter of the middle part of the rubber ring is smaller than the inner diameter of the pipeline. A column is provided on one side of the side plate, and the position and size of the column match the mounting holes on the pipeline. The side plate is provided with fixing columns, and the columns are located on both sides of the fixing columns. The side plate and the columns are slidably connected. When the pipeline and the sealing assembly are installed together, the mounting holes on the pipeline flange are matched with the columns on the outside of the side plate. Then, the flange and the column are fixed together by bolts or a pneumatic auxiliary mechanism, and the pipeline flange is fixed to the side plate by the fixing columns. Then the sealing assembly can be put into use.

[0013] One sidewall of the side plate fits against the sidewall of the pipe. The sealing assembly is located at the connection of the two sets of pipes. The mating surfaces of the side plate and the pipe match each other. The connection between the side plate and the pipe forms a labyrinth channel to increase the difficulty of liquid overflow through the mating area of ​​the side plate and the pipe. The inner diameter of the side plate is equal to the inner diameter of the pipe and is larger than the inner diameter of the central area of ​​the rubber ring. When the sealing assembly is installed between the two sets of pipes, during the movement of liquid in the pipe and the sealing assembly, the liquid passes through the rubber ring. As the cross-sectional area of ​​the liquid decreases, the pressure on the flow-facing surface of the rubber ring is greater than the pressure in other areas inside the pipe, which in turn causes the rubber ring to deform.

[0014] Furthermore, several sets of connecting rod assemblies are installed on the outer side of the outer wall of the rubber ring. Each set of connecting rod assemblies consists of two connecting rods arranged in a V-shape. The connecting rods are connected to the rubber ring, and both ends of each set of connecting rod assemblies are movably connected to the side plates on both sides. The outer wall of the rubber ring is provided with several sets of connecting rod assemblies, each set consisting of two connecting rods that are movably connected to each other. Both ends of each set of connecting rod assemblies are movably connected to the side plates on both sides. The two connecting rods in each set form a V-shaped structure, and the opening orientation of each set of connecting rod assemblies coincides with the opening orientation of the rubber ring. When the rubber ring is subjected to liquid... When impacted by the liquid, the central area of ​​the rubber ring moves outward to obtain a larger cross-sectional area for liquid flow. When the rubber ring moves to fit against the connecting rod assembly, the kinetic energy carried by the liquid is transferred to the connecting rod assembly through the rubber ring. Since the side plates are fixed by the pipe and the fixed column, the distance between the side plates on both sides of the connecting rod assembly cannot be changed. However, as the liquid continuously impacts the inner wall of the rubber ring as it passes through, the pressure from the liquid is transferred to the side plates on both sides through the rubber ring and the connecting rod assembly, causing the pressure exerted by the side plates on the pipe flange to continuously increase, thereby improving the sealing effect between the side plates and the pipe flange.

[0015] Furthermore, the connecting rod is provided with a through groove on the side of the connecting rod near the side plate. A limit ring is provided on the outer side of the connecting rod assembly, and the limit ring is movably connected to the connecting rod assembly through the through groove. The connecting rod assembly is connected to the limit ring, and the connection point between the connecting rod assembly and the limit ring is located on the through groove. The through groove is located on one side of the center of the connecting rod assembly, and is closer to the side plate. The connecting rod assembly and the limit ring are slidably connected, and the connecting rod assembly can deflect relative to the limit ring. The side of the connection point between the connecting rod assembly and the limit ring closer to the rubber ring is the power arm, and the other side is the resistance arm. Due to the position of the through groove, the length of the power arm of the connecting rod assembly is greater than the length of the resistance arm. When the connecting rod assembly is subjected to kinetic energy from the liquid, the kinetic energy on the connecting rod assembly is amplified through the conversion at the connection point between the connecting rod and the limit ring, so that the pressure exerted by the connecting rod assembly on the side plate is greater than the pressure exerted by the liquid movement on the connecting rod. After the conversion by the connecting rod assembly, the sealing effect between the side plate and the pipe flange is further improved.

[0016] Furthermore, a movable ring is installed on the outer side of the fixed column, and side plates are installed on both sides of the movable ring. Several clamping plates are movably installed on the side plates, and a spring rod is installed between the clamping plates and the movable ring. Universal shafts are installed at both ends of the spring rod. The movable ring changes the tilt state of the spring rod by rotating, and the spring rod has two tilt states. The movable ring can be rotated by installing the pipe flange on the column. The movable ring is slidably connected to the limiting ring, and the movable ring and the clamping plates are connected by the spring rod. Universal shafts are installed at both ends of the spring rod. When the movable ring rotates relative to the limiting ring, the straight-line distance between the connection point of the movable ring and the spring rod and the connection point of the clamping plate and the spring rod changes.

[0017] When the linear distance between the connection points on both sides of the spring rod changes, the movable ring can drive the clamp plate to move through the spring rod. Since the clamp plate and the side plate are rotatably connected, the clamp plate can be deflected relative to the side plate. When the pipe is installed on the sealing assembly, the end of the clamp plate will contact the flange on the outside of the pipe. The end of the clamp plate and the side plate are located on both sides of the pipe flange. At the same time, after deflection, the end of the clamp plate and the fixed column are in a fixed state. Thus, the mechanism between the end of the clamp plate and the fixed column is in a relatively fixed state after the clamp plate is deflected. That is, the clamp plate is relatively fixed between the pipe, the side plate and the fixed column after deflection.

[0018] The spring rod is tilted before and after deflection. Before deflection, the distance between the ends of the two clamps is greater than the outer diameter of the pipe flange, so that the pipe can be installed on the column. After deflection, the end of the clamp contacts the outer wall of the pipe flange, so as to fix the pipe and the sealing assembly together. There is a critical point during the exchange between the two tilting states of the spring rod. When the spring rod is at the critical point, it is in a compressed state and at its maximum contraction state, and the end of the clamp contacts the outer wall of the pipe flange. When the spring rod passes the critical point, the potential energy of the spring inside the spring rod is released, and the spring rod extends until it deflects to the clamping state. From the critical point to the clamping state, the spring inside the spring rod is always in a compressed state. Then, when the critical point deflects to the point where the pipe needs to be installed on the side plate, the spring inside the spring rod changes from a compressed state to a stretched state.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] 1. This high-pressure, high-flow vortex pump with anti-backflow structure, through the setting of the drum and Pitot tube, and the setting of the drum, Pitot tube and their internal mechanism, the two guide grooves and the flow dividing ring form a Tesla valve-like structure. The two liquids will impact each other in the transition area. The liquid pressure at the inlet of the Pitot tube is high relative to the air pressure area inside the outer ring, forming a high-pressure liquid near the Pitot tube, and thus forming a pressure difference between the inside and outside of the Pitot tube. Under the action of the pressure difference, the liquid inside the drum can leave through the Pitot tube, while increasing the liquid passage area at the inlet end of the Pitot tube, thereby increasing the flow rate output of this vortex pump per unit time;

[0021] 2. This high-pressure, high-flow vortex pump with anti-backflow structure, through the setting of the sealing components, when the rubber ring is impacted by the liquid, the liquid pressure is transmitted to the side plates on both sides through the rubber ring and the connecting rod, so that the pressure of the side plates on the pipe flange continuously increases, thereby improving the sealing effect between the side plates and the pipe flange. At the same time, the connection between the side plates and the pipe forms a labyrinth channel to increase the difficulty of liquid overflowing through the joint between the side plates and the pipe, further improving the sealing effect between the vortex pump and the pipe.

[0022] 3. This high-pressure, high-flow vortex pump with anti-backflow structure, through the setting of clamping plates and spring rods, the spring rods have two tilting states, which correspond to the connection state between the pipeline and the vortex pump. Utilizing the effect of the spring being able to store elastic potential energy, the deflection state of the clamping plates is controlled by the spring rods to reduce the time, connection procedures, and difficulty required during the connection between pipelines or between the pipeline and the vortex pump. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a front view full sectional structural diagram of the vortex pump and sealing assembly of the present invention;

[0025] Figure 2 This is a front view full sectional view of the rotating drum and its internal mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the left side of the rotating drum of the present invention (full sectional view).

[0027] Figure 4 This is a schematic diagram of the main sectional view of the rotating drum of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the sealing assembly of the present invention;

[0029] Figure 6This is a three-dimensional structural diagram of the sealing assembly and its external mechanism of the present invention;

[0030] Figure 7 This is a front view full sectional structural diagram of the sealing assembly and its external mechanism of the present invention (rotated 90° clockwise).

[0031] Figure 8 This is a top-view full-section structural diagram of the sealing component of the present invention.

[0032] In the diagram: 1. Outer shell; 2. Pipe; 3. Drum; 301. Outer ring; 302. Inner ring; 303. Guide vane; 304. Transition area; 305. Guide groove; 306. Diverter ring; 4. Pitot tube; 401. Concave plate; 402. Neck; 5. Sealing assembly; 501. Side plate; 502. Rubber ring; 503. Connecting rod assembly; 504. Through groove; 6. Column; 7. Limiting ring; 8. Fixed column; 9. Clamping plate; 901. Movable ring; 902. Spring rod; 903. Side plate. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-8 The present invention provides a technical solution: a high-pressure, high-flow vortex pump with an anti-backflow structure, including a motor, a housing 1 and a pipe 2, the pipe 2 including an inlet pipe and an outlet pipe, a drum 3 is provided inside the housing 1, the two ends of the drum 3 are respectively connected to the motor and the inlet pipe, and the drum 3 is a hollow structure.

[0035] The drum 3 consists of an outer ring 301 and an inner ring 302. The inner ring 302 is connected to the water inlet pipe, and several guide vanes 303 are arranged in a ring on the inner wall of the inner ring 302.

[0036] The connection between the outer ring 301 and the inner ring 302 is a transition region 304. The middle spacing of the transition region 304 is smaller than the spacing between the upper and lower ends. A guide channel 305 is provided above the transition region 304. The guide channel 305 is located inside the outer ring 301. A diversion ring 306 is provided inside the guide channel 305. There is an annular water tank between the guide channel 305 and the diversion ring 306. The vertical cross-section of the annular water tank is U-shaped.

[0037] The arrangement of the drum 3 and Pitot tube 4 and their internal mechanisms, with the two guide channels 305 and the flow divider ring 306 forming a Tesla-like valve structure, allows the two liquids to collide in the transition area 304. The liquid pressure at the inlet of Pitot tube 4 is high relative to the air pressure area inside the outer ring 301, forming a high-pressure liquid near Pitot tube 4. This creates a pressure difference between the inner and outer sides of Pitot tube 4. Under the action of this pressure difference, the liquid inside the drum 3 can leave through Pitot tube 4, while increasing the liquid flow area at the inlet of Pitot tube 4, thereby increasing the flow rate output by this vortex pump per unit time.

[0038] The drum 3 is equipped with a Pitot tube 4, which is connected to the water outlet pipe through the outer shell 1;

[0039] A concave plate 401 is provided above the Pitot tube 4. The vertical cross-section of the concave plate 401 is arc-shaped, and the direction of the arc opening is opposite to the direction of water flow inside the outer ring 301.

[0040] The connection between the concave plate 401 and the pitot tube 4 is a narrow neck 402. The narrow neck 402 is located in the middle of the transition region 304. The inner diameter of the narrow neck 402 is smaller than the inner diameter of other areas of the pitot tube 4. One side of the outer wall of the pitot tube 4 is inclined.

[0041] When the rubber ring 502 is impacted by the liquid, the pressure of the liquid is transmitted to the side plates 501 on both sides through the rubber ring 502 and the connecting rod assembly 503. This causes the pressure exerted by the side plates 501 on the flange of pipe 2 to continuously increase, thereby improving the sealing effect between the side plates 501 and the flange of pipe 2. At the same time, the connection between the side plates 501 and pipe 2 forms a labyrinth channel to increase the difficulty of liquid overflowing through the joint between the side plates 501 and pipe 2, further improving the sealing effect between the vortex pump and pipe 2.

[0042] A sealing assembly 5 is installed on the pipe 2. The sealing assembly 5 includes two side plates 501. The side walls of the side plates 501 are connected to the pipe 2. The side plates 501 are annular. A rubber ring 502 is provided between the side plates 501. The vertical cross section of the rubber ring 502 is V-shaped. The inner diameter of the middle part of the rubber ring 502 is smaller than the inner diameter of the pipe 2. A column 6 is provided on one side of the side plate 501. The position and size of the column 6 match the mounting hole on the pipe 2. A fixing column 8 is provided on the side plate 501. The column 6 is located on both sides of the fixing column 8. The side plate 501 and the column 6 are slidably connected.

[0043] Several sets of connecting rod assemblies 503 are installed on the outer side of the outer wall of the rubber ring 502. Each set of connecting rod assemblies 503 consists of two connecting rods arranged in a V-shape. The connecting rods are connected to the rubber ring 502. The two ends of each set of connecting rod assemblies 503 are movably connected to the side plates 501 on both sides.

[0044] A through groove 504 is provided on the connecting rod, which is located on the side of the connecting rod near the side plate 501. A limit ring 7 is provided on the outer side of the connecting rod assembly 503, and the limit ring 7 is movably connected to the connecting rod assembly 503 through the through groove 504.

[0045] A clamping plate 9 is movably installed on the outer side of the side plate 501. A movable ring 901 is installed on the outer side of the fixed column 8. Side plates 903 are installed on both sides of the movable ring 901. Several clamping plates 9 are movably installed on the side plates 903. A spring rod 902 is installed between the clamping plate 9 and the movable ring 901. Universal shafts are installed at both ends of the spring rod 902. The movable ring 901 changes the tilt state of the spring rod 902 by rotation. The spring rod 902 has two tilt states.

[0046] The spring rod 902 has two tilt states, which correspond to the connection state between the pipe 2 and the vortex pump. By utilizing the effect of the spring storing elastic potential energy, the deflection state of the clamp 9 is controlled by the spring rod 902 to reduce the time, connection procedures and difficulty required during the connection between the pipes 2 or between the pipe 2 and the vortex pump.

[0047] Working principle of the invention:

[0048] Liquid enters the drum 3 through the inlet pipe and flows axially from the outer periphery of the drum 3 into the inner ring 302. Since the drum 3 is connected to the motor and guide vanes 303 are provided on both sides of the inner wall of the inner ring 302, the liquid is propelled by the guide vanes 303 when the drum 3 rotates at high speed, thus giving the liquid kinetic energy. The high-speed moving liquid moves from the inner ring 302 to the outer ring 301. The inlet of the Pitot tube 4 is located in the outer ring 301. During the movement of the liquid driven by the drum 3, some liquid leaves through the Pitot tube 4. The cross-sectional area of ​​the liquid passing through the Pitot tube 4 gradually increases, and the liquid flow velocity gradually decreases, thereby converting the kinetic energy of the liquid into pressure energy. Finally, the high-pressure liquid is discharged from the end of the outlet pipe.

[0049] Driven by the guide vane 303 and the motor, the liquid moves within the inner ring 302. Under the action of centrifugal force, the liquid will continuously move towards the area where the outer ring 301 is located. Since a transition area 304 is provided between the outer ring 301 and the inner ring 302, the gap of the transition area 304 is smaller than the distance between other areas in the drum 3. As a result, when the liquid passes through the transition area 304, the pressure of the liquid in the inner ring of the transition area 304 is greater than the pressure of the liquid in the middle area of ​​the inner ring 302.

[0050] After the liquid enters the outer ring 301, the liquid's movement path overlaps with the area where the Pitot tube 4 is located. When the liquid moves to the inlet of the Pitot tube 4, the liquid passage cross section at the inlet of the Pitot tube 4 is small, resulting in a high pressure state for the liquid at the inlet of the Pitot tube 4 relative to the air pressure region inside the outer ring 301.

[0051] The Pitot tube 4 inlet is located outside the guide channel 305 and the diversion ring 306. The guide channel 305 and the diversion ring 306 cooperate to form an annular water tank. The diversion ring 306 diverts the liquid at the Pitot tube 4 inlet. One stream of liquid enters the annular water tank along one side wall of the diversion ring 306, and the other stream moves towards the inner ring 302 along the other side wall of the diversion ring 306. The two streams merge after leaving the diversion ring 306. The liquid inside the annular water tank moves towards the side where the Pitot tube 4 inlet is located under the action of the guide channel 305. The two streams of liquid collide with each other in the transition area 304. The guide channel 305 and the diversion ring 306 form a Tesla valve-like structure, which reduces the kinetic energy of the liquid in the outer ring 301 moving into the inner ring 302.

[0052] The concave plate 401 is designed to increase the cross-sectional area of ​​the liquid at the inlet of the Pitot tube 4. When the liquid moves inside the outer ring 301, when the liquid passes through the area of ​​the concave plate 401, the high-speed flowing liquid impacts the inner wall of the concave plate 401. Under the guidance of the concave plate 401, the liquid enters the interior of the Pitot tube 4 through the narrow neck 402.

[0053] The Pitot tube 4 has a sidewall structure in which the inclined sidewall is located in the direction of liquid movement. The liquid impacts the sidewall of the Pitot tube 4 under the influence of the guide plate 303. Then, guided by the inclined sidewall, the liquid moves into the outer ring 301. The narrow neck 402, in conjunction with the concave plate 401, the guide groove 305, and the diverting ring 306, forms a high-pressure liquid near the inlet end of the narrow neck 402 at the concave plate 401. At the same time, after the liquid passes through the narrow neck 402, the cross-sectional area of ​​the liquid in the Pitot tube 4 gradually increases, thus forming a pressure difference at the narrow neck 402. Under the action of the pressure difference, the liquid in the outer ring 301 flows into the Pitot tube 4. Conversely, the liquid inside the Pitot tube 4 is difficult to move in the opposite direction of the pressure difference.

[0054] When the pipe 2 and the sealing assembly 5 are installed together, the mounting holes on the flange of the pipe 2 are matched with the columns 6 on the outside of the side plate 501. Then, the flange and the column 6 are fixed together by bolts or pneumatic auxiliary mechanism, and the flange of the pipe 2 is fixed to the side plate 501 by the fixing column 8. Then the sealing assembly 5 can be put into use.

[0055] One side wall of the side plate 501 is in contact with the side wall of the pipe 2. The sealing component 5 is located at the connection of the two sets of pipes 2. The contact surfaces of the side plate 501 and the pipe 2 match each other. The connection between the side plate 501 and the pipe 2 forms a labyrinth channel to increase the difficulty of liquid overflow through the contact between the side plate 501 and the pipe 2. The inner diameter of the side plate 501 is equal to the inner diameter of the pipe 2 and is larger than the inner diameter of the central area of ​​the rubber ring 502. When the sealing component 5 is installed between the two sets of pipes 2, during the movement of liquid in the pipe 2 and the sealing component 5, when the liquid passes through the rubber ring 502, the cross-sectional area of ​​the liquid decreases, making the pressure on the flow-facing surface of the rubber ring 502 greater than the pressure in other areas inside the pipe 2, thereby causing the rubber ring 502 to deform.

[0056] The outer wall of the rubber ring 502 is provided with several sets of connecting rod assemblies 503. Each set of connecting rod assemblies 503 consists of two connecting rods that are movably connected. Both ends of each set of connecting rod assemblies 503 are movably connected to the side plates 501 on both sides. The two connecting rods in each set form a V-shaped structure, and the opening orientation of each set of connecting rod assemblies 503 coincides with the opening orientation of the rubber ring 502. When the rubber ring 502 is impacted by liquid, the central area of ​​the rubber ring 502 moves outward to obtain a larger cross-sectional area for liquid passage. When the rubber ring 502 moves to the point where it coincides with the opening orientation of the rubber ring 502... When the connecting rod assembly 503 is in contact, the kinetic energy carried by the liquid is transmitted to the connecting rod assembly 503 through the rubber ring 502. Since the side plate 501 is fixed by the pipe 2 and the fixed column 8, the distance between the two side plates 501 of the connecting rod assembly 503 cannot be changed. However, as the liquid continuously impacts the inner wall of the rubber ring 502 as it passes through the rubber ring 502, the pressure from the liquid is transmitted to the side plates 501 on both sides through the rubber ring 502 and the connecting rod assembly 503. This causes the pressure exerted by the side plate 501 on the flange of the pipe 2 to continuously increase, thereby improving the sealing effect between the side plate 501 and the flange of the pipe 2.

[0057] The connecting rod assembly 503 is connected to the limiting ring 7. The connection point between the connecting rod assembly 503 and the limiting ring 7 is located on the through groove 504, which is located on one side of the center of the connecting rod assembly 503 and closer to the side plate 501. The connecting rod assembly 503 and the limiting ring 7 are slidably connected, and the connecting rod assembly 503 can deflect relative to the limiting ring 7. The side of the connection point between the connecting rod assembly 503 and the limiting ring 7 closer to the rubber ring 502 is the power arm, while the side closer to the rubber ring 502 is the power arm. The other side is the resistance arm. Due to the position of the through groove 504, the length of the power arm of the connecting rod assembly 503 is greater than the length of the resistance arm. When the connecting rod assembly 503 is subjected to kinetic energy from the liquid, the kinetic energy on the connecting rod assembly 503 is amplified through the conversion at the connection between the connecting rod and the limiting ring 7, so that the pressure exerted by the connecting rod assembly 503 on the side plate 501 is greater than the pressure exerted by the liquid movement on the connecting rod assembly 503. After the conversion by the connecting rod assembly 503, the sealing effect between the side plate 501 and the flange of the pipe 2 is further improved.

[0058] Install the flange of pipe 2 on column 6, and then rotate the movable ring 901. The movable ring 901 is slidably connected to the limit ring 7. The movable ring 901 and the clamping plate 9 are connected by a spring rod 902. Universal shafts are installed at both ends of the spring rod 902. When the movable ring 901 rotates relative to the limit ring 7, the straight-line distance between the connection point of the movable ring 901 and the spring rod 902 and the connection point of the clamping plate 9 and the spring rod 902 changes.

[0059] When the linear distance between the connection points on both sides of the spring rod 902 changes, the movable ring 901 can drive the clamping plate 9 to move through the spring rod 902. Since the clamping plate 9 and the side plate 903 are rotatably connected, the clamping plate 9 can be deflected relative to the side plate 903. When the pipe 2 is installed on the sealing assembly 5, the end of the clamping plate 9 will contact the flange on the outside of the pipe 2. The end of the clamping plate 9 and the side plate 501 are located on both sides of the flange of the pipe 2. At the same time, after deflection, the end of the clamping plate 9 and the fixed column 8 are both in a fixed state. Thus, the mechanism between the end of the clamping plate 9 and the fixed column 8 is in a relatively fixed state after the clamping plate 9 is deflected. That is, the clamping plate 9 is relatively fixed between the pipe 2, the side plate 501 and the fixed column 8 after deflection.

[0060] The spring rod 902 is in an inclined state before and after deflection. Before deflection, the distance between the ends of the two clamping plates 9 is greater than the outer diameter of the flange of pipe 2, so that pipe 2 can be installed on the column 6. After deflection, the ends of the clamping plates 9 contact the outer wall of the flange of pipe 2, so as to fix pipe 2 and sealing assembly 5 together. There is a critical point during the exchange between the two inclined states of the spring rod 902. When the spring rod 902 is at the critical point, it is in a compressed state and at this time it is in the maximum contraction state. At this time, the end of the clamping plate 9 is in contact with the outer wall of the flange of the pipe 2. When the spring rod 902 crosses the critical point, the potential energy of the spring inside the spring rod 902 is released, and the spring rod 902 extends until it deflects to the angle when the clamping plate 9 is in the clamping state. When the spring rod 902 deflects from the critical point to the clamping state, the spring inside the spring rod 902 is always in a compressed state. Secondly, when the critical point deflects to the point where the pipe 2 needs to be installed on the side of the side plate 501, during the deflection state of the spring rod 902, the spring inside the spring rod 902 changes from a compressed state to a stretched state.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure, high-flow-rate vortex pump with an anti-backflow structure, comprising a motor, a casing (1), and a pipe (2), wherein the pipe (2) comprises an inlet pipe and an outlet pipe, characterized in that: The outer shell (1) is provided with a rotating drum (3), and the two ends of the rotating drum (3) are respectively connected to a motor and a water inlet pipe. The rotating drum (3) is a hollow mechanism. The rotating drum (3) is provided with a Pitot tube (4), and the Pitot tube (4) is connected to the water outlet pipe through the outer shell (1). The drum (3) consists of an outer ring (301) and an inner ring (302). The inner ring (302) is connected to the water inlet pipe. Several guide vanes (303) are arranged in a ring on the inner wall of the inner ring (302). The connection between the outer ring (301) and the inner ring (302) is a transition area (304). The distance between the middle parts of the transition area (304) is smaller than the distance between the upper and lower ends. A guide groove (305) is provided above the transition area (304). The guide groove (305) is located inside the outer ring (301). A diversion ring (306) is provided inside the guide groove (305). An annular water tank exists between the guide groove (305) and the diversion ring (306). The vertical cross-section of the annular water tank is U-shaped. A concave plate (401) is provided above the pitot tube (4). The vertical cross-section of the concave plate (401) is arc-shaped, and the opening direction of the arc is opposite to the water flow direction inside the outer ring (301). The connection between the concave plate (401) and the pitot tube (4) is a narrow neck (402). The narrow neck (402) is located in the middle of the transition region (304). The inner diameter of the narrow neck (402) is smaller than the inner diameter of other areas of the pitot tube (4). One side of the outer wall of the pitot tube (4) is inclined.

2. A high-pressure, high-flow-rate vortex pump with an anti-backflow structure according to claim 1, characterized in that: A sealing assembly (5) is installed on the pipe (2). The sealing assembly (5) includes two side plates (501). The side walls of the side plates (501) are connected to the pipe (2). The side plates (501) are annular. A rubber ring (502) is provided between the side plates (501). The vertical cross section of the rubber ring (502) is V-shaped. The inner diameter of the middle part of the rubber ring (502) is smaller than the inner diameter of the pipe (2). A column (6) is provided on one side of the side plate (501). The position and size of the column (6) match the mounting hole on the pipe (2). A fixing column (8) is provided on the side plate (501). The column (6) is located on both sides of the fixing column (8). The side plate (501) and the column (6) are slidably connected.

3. A high-pressure, high-flow-rate vortex pump with an anti-backflow structure according to claim 2, characterized in that: Several sets of connecting rod assemblies (503) are installed on the outer side of the outer wall of the rubber ring (502). Each set of connecting rod assemblies (503) consists of two connecting rods arranged in a V-shape. The connecting rods are connected to the rubber ring (502). The two ends of each set of connecting rod assemblies (503) are movably connected to the side plates (501) on both sides.

4. A high-pressure, high-flow-rate vortex pump with an anti-backflow structure according to claim 3, characterized in that: The connecting rod is provided with a through groove (504) on the side of the connecting rod near the side plate (501). A limiting ring (7) is provided on the outer side of the connecting rod assembly (503). The limiting ring (7) is movably connected to the connecting rod assembly (503) through the through groove (504).

5. A high-pressure, high-flow-rate vortex pump with an anti-backflow structure according to claim 4, characterized in that: A movable ring (901) is installed on the outside of the fixed column (8). Side plates (903) are installed on both sides of the movable ring (901). Several clamping plates (9) are movably installed on the side plates (903). A spring rod (902) is installed between the clamping plates (9) and the movable ring (901). Universal shafts are installed at both ends of the spring rod (902). The movable ring (901) changes the tilt state of the spring rod (902) by rotation. The spring rod (902) has two tilt states.

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