Noise-reducing high-temperature liquid metal circulating pump

Abstract

The invention relates to the technical field of circulating pumps, in particular to a noise-reducing high-temperature liquid metal circulating pump which comprises a liquid discharge pipe, a flow guide pipe and a liquid inlet pipe, the flow guide pipe is fixedly mounted in the liquid discharge pipe and the liquid inlet pipe, a flow guide frame is fixedly mounted in the flow guide pipe, and a rotating shaft is rotatably mounted on the inner side of the flow guide frame. Turbulence generated in the flowing process of liquid metal is reduced through vibration of the rotating cylinder and the flow guide cylinder, operation noise is effectively reduced, meanwhile, shaking generated in the circulating process and circumferential vibration can be counteracted through longitudinal vibration, the operation stability of the equipment is further improved, bubbles are gradually gathered in the gas collection groove through vibration of the flow guide cylinder, and the stability of the equipment is improved. The number of residual bubbles in the liquid metal is reduced, cavitation of the bubbles to the impeller and noise in the rotating process of the impeller are reduced, through conveying of the spiral groove, the bubbles are made to break away from a liquid metal circulating flow channel, interference of the bubbles to the stability of a circulating system is further reduced, and the noise reduction effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circulating pumps, in particular to a high-temperature liquid metal circulating pump with noise reduction. BACKGROUND

[0002] In the process of continuous operation of the high-temperature liquid metal circulating system, due to the fluctuation of oxygen concentration in the liquid lead-bismuth alloy under the working condition of high-temperature and high-density liquid metal flow, the system internal bubbles are continuously accumulated, which are often derived from the precipitation of dissolved gas in the liquid metal, the cavitation phenomenon in the flow process or the penetration of argon in the external system. The accumulated bubbles lead to a significant decrease in fluid dynamics performance, not only increase the flow resistance, but also cause abnormal pressure fluctuation and local cavitation phenomenon in the system. In addition, high-frequency noise is continuously generated in the process of high-speed circulation of the liquid metal. This noise is derived from both the collapse of the air bubble and the fluid turbulence, and is also affected by the mechanical vibration of the pump body. It not only causes potential damage to the equipment itself, but also brings long-term adverse effects to the operating environment. As the bubbles circulate with the liquid metal, they break sharply at the impeller, producing intense micro-jet flow, causing pitting and fatigue damage on the surface of the impeller. Long-term operation will significantly reduce the mechanical strength and service life of the impeller. At the same time, the existence of bubbles will also interfere with the stable flow of the fluid, causing flow pulsation and reducing energy transfer efficiency, thereby weakening the operation stability of the entire circulating system, and even affecting the reliability and service life of the system during long-term operation. SUMMARY

[0003] The purpose of the present application is to solve the problems in the background art, and a high-temperature liquid metal circulating pump with noise reduction is proposed.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A high-temperature liquid metal circulating pump with noise reduction, comprising a liquid discharge pipe, a flow guide pipe and a liquid inlet pipe, the flow guide pipe is fixedly installed inside the liquid discharge pipe and the liquid inlet pipe, a flow guide frame is fixedly installed inside the flow guide pipe, a rotating shaft is rotatably installed on the inner side of the flow guide frame, a rotating cylinder is slidably sleeved on the outer peripheral wall of the rotating shaft, a static cavity is formed on the inner side of the flow guide frame, the rotating cylinder is movably installed on the inner side of the static cavity, a flow guide cylinder is slidably installed inside the liquid inlet pipe, the rotating cylinder is rotatably installed inside the flow guide cylinder, an impeller is fixedly installed on the bottom of the rotating shaft, a flow guide wheel is fixedly sleeved on the side wall of the rotating shaft, the flow guide wheel is located between the impeller and the flow guide cylinder, a drive motor is fixedly installed on the top of the flow guide frame, the drive motor is located on the outer side of the liquid discharge pipe, and the output shaft of the drive motor is fixedly connected with the rotating shaft.

[0005] Preferably, the side wall of the rotating cylinder is integrally formed with a slide rod, a corrugated groove is formed on the inner side of the flow guide frame, the slide rod is slidably installed in the corrugated groove, and a plurality of uniformly distributed flow guide fins I are welded on the inner side of the flow guide frame.

[0006] Preferably, the side wall of the rotating cylinder is provided with a plurality of evenly distributed spiral grooves, the inside of the rotating cylinder is provided with a plurality of evenly distributed liquid inlet holes, the liquid inlet holes and the spiral grooves correspond to each other and are in communication with each other, and the liquid inlet holes are located in the inside of the standing cavity.

[0007] Preferably, the inside of the flow guide cylinder is welded with a plurality of evenly distributed flow guide pieces two, the side walls on both sides of the flow guide piece two are provided with air guide grooves, the top of the flow guide piece two is provided with a gas collecting groove, the air guide groove and the gas collecting groove are in communication, and the gas collecting groove is located below the spiral groove.

[0008] Preferably, the inside of the rotating cylinder is provided with an exhaust hole three, the exhaust hole three is respectively in communication with the inside of the standing cavity and the flow guide frame, the inside of the standing cavity is slidably provided with a piston ring one and a piston ring two, the piston ring one is rotatably sleeved on the outside of the rotating cylinder, the piston ring two is movably sleeved on the outside of the rotating cylinder, the piston ring one is located between the liquid inlet hole and the exhaust hole three, and the piston ring two is located below the piston ring one.

[0009] Preferably, the bottom of the piston ring one is integrally formed with a sealing plug, the side wall of the piston ring two is provided with a sealing hole, the sealing plug is slidably inserted into the inside of the sealing hole, and the inside of the piston ring two is in a hollow shape.

[0010] Preferably, the side wall of the piston ring one is provided with an exhaust hole four, the top of the exhaust hole four is provided with a one-way valve one, the side wall of the liquid outlet pipe and the flow guide frame is respectively provided with an exhaust hole one and an exhaust hole two, and the exhaust hole one and the exhaust hole two correspond to each other.

[0011] Preferably, the bottom of the standing cavity is provided with a liquid outlet hole, the liquid outlet hole connected with the flow guide pipe is in an upward inclined shape, the liquid outlet hole is located below the piston ring two, the inside of the liquid outlet hole is provided with a one-way pressure valve, and the inside of the liquid inlet hole is provided with a one-way valve two.

[0012] Compared with the prior art, the present application has the following advantages: 1. In the process of circulating high-temperature liquid metal, the rotating cylinder drives the flow guide cylinder to move up and down quickly, so that the rotating cylinder and the flow guide cylinder vibrate longitudinally, the turbulence generated in the flow process of the liquid metal is reduced through the vibration of the rotating cylinder and the flow guide cylinder, the running noise is effectively reduced, and the longitudinal vibration can offset the shaking and circumferential vibration generated in the circulation process, further improving the stability of the equipment operation.

[0013] 2. Through the vibration of the flow guide cylinder, the bubbles gradually gather in the gas collecting groove, the amount of residual bubbles in the liquid metal is reduced, the cavitation of the impeller and the noise in the rotation process of the impeller are reduced, and the uniformity and heat conduction efficiency of the liquid metal flow are improved.

[0014] 3. In the process of rotating the rotating cylinder, the bubbles gathered in the gas collection groove are rolled into the interior of the spiral groove, so that the spiral groove transports the interior bubbles and liquid metal to the interior of the static chamber for static, and the transportation of the spiral groove makes the bubbles separate from the flow channel of the circulating liquid metal, further reduces the interference of the bubbles on the stability of the circulating system, and improves the effect of noise reduction. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a sectional view of the overall structure of the present application; Figure 3 is a schematic diagram of the structure of the present application Figure 2 is an enlarged schematic diagram of the structure at A in the present application; Figure 4 is a schematic diagram of the structure of the present application after removing the liquid discharge pipe, the flow guide pipe and the liquid inlet pipe; Figure 5 is a sectional view of the structure of the flow guide frame in the present application; Figure 6 is a schematic diagram of the structure of the rotating cylinder in the present application; Figure 7 is a schematic diagram of the structure of the piston ring one and the piston ring two in the present application; Figure 8 is a sectional view of the structure of the flow guide cylinder in the present application; Figure 9 is a schematic diagram of the structure of the present application Figure 8 is an enlarged schematic diagram of the structure at B in the present application.

[0016] In the figure: 1, liquid discharge pipe; 11, flow guide pipe; 12, liquid inlet pipe; 13, exhaust hole one; 14, driving motor; 141, rotating shaft; 142, flow guide wheel; 143, impeller; 21, flow guide frame; 211, exhaust hole two; 212, flow guide piece one; 213, static chamber; 214, liquid discharge hole; 215, one-way pressure valve; 216, corrugated groove; 22, rotating cylinder; 221, slide rod; 222, spiral groove; 223, liquid inlet hole; 224, one-way valve two; 225, exhaust hole three; 23, flow guide cylinder; 231, flow guide piece two; 232, gas guide groove; 233, gas collection groove; 311, piston ring one; 312, one-way valve one; 313, exhaust hole four; 314, sealing plug; 315, piston ring two; 316, sealing hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Reference Figure 1 - Figure 9 As shown, a noise-reducing high-temperature liquid metal circulating pump includes a drain pipe 1, a guide pipe 11, and an inlet pipe 12. The guide pipe 11 is fixedly installed inside the drain pipe 1 and the inlet pipe 12. A guide frame 21 is fixedly installed inside the guide pipe 11. A rotating shaft 141 is rotatably installed on the inner side of the guide frame 21. A rotating cylinder 22 is slidably fitted on the outer peripheral wall of the rotating shaft 141. A settling cavity 213 is opened on the inner side of the guide frame 21, and the rotating cylinder 22 is movably installed on the inner side of the settling cavity 213. A guide tube 23 is slidably installed inside the inlet pipe 12. A rotating cylinder 22 is rotatably installed inside the guide tube 23. An impeller 143 is fixedly installed at the bottom of the rotating shaft 141. A guide wheel 142 is fixedly fitted on the side wall of the rotating shaft 141. The guide wheel 142 is located between the impeller 143 and the guide tube 23. A drive motor 14 is fixedly installed at the top of the guide frame 21. The drive motor 14 is located outside the drain pipe 1. The output shaft of the drive motor 14 is fixedly connected to the rotating shaft 141.

[0020] like Figure 2 , Figure 5 and Figure 6 As shown, the side wall of the rotating cylinder 22 is integrally formed with a sliding rod 221, and the inner side of the flow guide frame 21 is provided with a corrugated groove 216. The sliding rod 221 is slidably installed inside the corrugated groove 216, and a number of evenly distributed flow guide plates 212 are welded to the inner side of the flow guide frame 21.

[0021] During the circulation of high-temperature liquid metal, the drive motor 14 drives the rotating shaft 141 to rotate. The rotating shaft 141 drives the impeller 143, the guide wheel 142, and the rotating cylinder 22 to rotate. The impeller 143 and the guide wheel 142 drive the high-temperature liquid metal to circulate. The rotating cylinder 22 moves up and down rapidly through the slide rod 221 and the corrugated groove 216. The guide cylinder 23 follows the rotating cylinder 22 and moves up and down rapidly, causing the rotating cylinder 22 and the guide cylinder 23 to vibrate longitudinally. The vibration of the rotating cylinder 22 and the guide cylinder 23 reduces the turbulence generated during the flow of liquid metal, effectively reducing operating noise. At the same time, the longitudinal vibration can cancel out the shaking and circumferential vibration generated during the circulation process, further improving the stability of the equipment operation.

[0022] like Figure 3、 Figure 4 and Figure 6 As shown in

[0023] As shown in Figure 2 、 Figure 4 、 Figure 8 and Figure 9 As shown in

[0024] During the longitudinal vibration of the flow guide cylinder 23, the flow guide cylinder 23 drives the flow guide piece two 231 to vibrate, so that the bubbles in the liquid metal move to the inside of the air guide groove 232 along with the micro disturbance generated by the vibration of the flow guide piece two 231, and gather along the air guide groove 232 to the gas collection groove 233. Through the vibration of the flow guide cylinder 23, the bubbles gradually gather in the gas collection groove 233, reducing the amount of residual bubbles in the liquid metal, reducing the cavitation of the impeller 143 and the noise in the rotation process of the impeller 143, and improving the uniformity of the liquid metal flow and the heat conduction efficiency; During the rotation of the rotating cylinder 22 following the rotating shaft 141, the rotating cylinder 22 drives the spiral groove 222 to rotate, so that the bubbles gathered in the gas collection groove 233 are rolled into the inside of the spiral groove 222. The spiral groove 222 transports the bubbles and liquid metal in the inside upwards, so that the bubbles and liquid metal enter the inside of the static chamber 213 for static through the liquid inlet hole 223. Through the transportation of the spiral groove 222, the bubbles are separated from the circulating flow channel of the liquid metal, further reducing the interference of the bubbles on the stability of the circulating system, and improving the noise reduction effect.

[0025] As shown in Figure 2 、 Figure 3 、 Figure 6 and Figure 7As shown, the inside of the rotating cylinder 22 is provided with exhaust hole three 225, which is respectively connected with the static cavity 213 and the inside of the guide frame 21. The inside of the static cavity 213 is slidably provided with piston ring one 311 and piston ring two 315. The piston ring one 311 is rotatably sleeved on the outside of the rotating cylinder 22, and the piston ring two 315 is movably sleeved on the outside of the rotating cylinder 22. The piston ring one 311 is located between the liquid inlet hole 223 and the exhaust hole three 225, and the piston ring two 315 is located below the piston ring one 311. The side wall of the piston ring one 311 is provided with exhaust hole four 313, and the top of the exhaust hole four 313 is provided with one-way valve one 312.

[0026] As shown in Figure 3 and Figure 7 , the bottom of the piston ring one 311 is integrally formed with a sealing plug 314, the side wall of the piston ring two 315 is provided with a sealing hole 316, the sealing plug 314 is slidably inserted into the inside of the sealing hole 316, and the inside of the piston ring two 315 is hollow.

[0027] As shown in Figure 2 , Figure 4 and Figure 5 , the side wall of the liquid discharge pipe 1 and the guide frame 21 is respectively provided with exhaust hole one 13 and exhaust hole two 211, and the exhaust hole one 13 and the exhaust hole two 211 correspond to each other.

[0028] As shown in Figure 3 and Figure 5 , the bottom of the static cavity 213 is provided with a liquid discharge hole 214, one end of the liquid discharge hole 214 connected with the guide pipe 11 is upwardly inclined, the liquid discharge hole 214 is located below the piston ring two 315, the inside of the liquid discharge hole 214 is provided with a one-way pressure valve 215, and the inside of the liquid inlet hole 223 is provided with a one-way valve two 224.

[0029] Wherein, after the bubble and the liquid metal enter the inside of the static chamber 213, the piston ring two 315 floats above the liquid metal, at this time the piston ring two 315 is located between the bubble and the liquid metal, the bubble is located between the piston ring two 315 and the piston ring one 311, in the process of the rotating cylinder 22 moving up and down, the piston ring one 311 moves up and down with the rotating cylinder 22, when the sealing plug 314 is inserted into the inside of the sealing hole 316, the piston ring one 311 continues to move downward and extrudes the space between the piston ring one 311 and the piston ring two 315, at this time the pressure between the piston ring one 311 and the piston ring two 315 is less than the set value of the one-way pressure valve 215, so that the one-way valve one 312 is opened, the one-way valve two 224 and the one-way pressure valve 215 are closed, the bubble between the piston ring one 311 and the piston ring two 315 is discharged to the inside of the guide frame 21 through the exhaust hole three 225, at this time the bubble is discharged through the exhaust hole one 13 and the exhaust hole two 211, after the bubble between the piston ring one 311 and the piston ring two 315 is discharged, the piston ring one 311 drives the piston ring two 315 to move downward, at this time the one-way pressure valve 215 is opened, so that the piston ring two 315 discharges the liquid metal below to the flow channel of the liquid metal circulation through the liquid discharge hole 214, when the piston ring one 311 moves upward, the one-way pressure valve 215 and the one-way valve one 312 are closed, the one-way valve two 224 is opened, the piston ring two 315 stops moving, so that the piston ring one 311 sucks the bubble and the liquid metal in the inside of the liquid inlet hole 223 to between the piston ring one 311 and the piston ring two 315, the above steps are continuously repeated, through the mutual movement between the piston ring one 311 and the piston ring two 315, the bubble and the liquid metal in the inside of the static chamber 213 are completely separated, the bubble entering the liquid metal circulation flow channel is effectively avoided, so as to ensure the stability and safety in the process of the liquid metal circulation.

[0030] The specific working principle and use method of the application are explained in detail as follows: in the process of circulating high-temperature liquid metal, the driving motor 14 drives the impeller 143, the flow guide wheel 142 and the rotating cylinder 22 to rotate, the impeller 143 and the flow guide wheel 142 drive the high-temperature liquid metal to circulate, and the rotating cylinder 22 drives the flow guide cylinder 23 to move up and down quickly in the process of rotation, so that the rotating cylinder 22 and the flow guide cylinder 23 vibrate longitudinally. Through the vibration of the rotating cylinder 22 and the flow guide cylinder 23, the turbulence generated in the flow process of the liquid metal is reduced, the operation noise is effectively reduced, and the longitudinal vibration can offset the shaking and circular vibration generated in the circulation process, further improving the stability of the equipment operation. In the process of vibration of the flow guide cylinder 23, the bubbles in the liquid metal move to the inside of the air guide groove 232 with the vibration of the flow guide piece two 231, and gather along the air guide groove 232 to the air collection groove 233. Through the vibration of the flow guide cylinder 23, the bubbles gradually gather in the air collection groove 233, reducing the amount of residual bubbles in the liquid metal, reducing the cavitation of the impeller 143 and the noise in the rotation process of the impeller 143, and improving the uniformity of the liquid metal flow and the heat transfer efficiency. In the process of rotation of the rotating cylinder 22, the rotating cylinder 22 drives the spiral groove 222 to rotate, so that the bubbles gathered in the air collection groove 233 are rolled into the inside of the spiral groove 222. The spiral groove 222 transports the bubbles and liquid metal in the inside upward, so that the bubbles and liquid metal enter the inside of the static chamber 213 through the liquid inlet hole 223. Through the transportation of the spiral groove 222, the bubbles are separated from the flow channel of the liquid metal circulation, further reducing the interference of the bubbles to the stability of the circulation system and improving the noise reduction effect. After the bubbles and liquid metal enter the inside of the static chamber 213, the piston ring two 315 floats above the liquid metal, so that the piston ring two 315 is located between the bubbles and the liquid metal, and the bubbles are located between the piston ring two 315 and the piston ring one 311. In the process of the rotating cylinder 22 moving up and down, the piston ring one 311 moves up and down with the rotating cylinder 22. When the sealing plug 314 is inserted into the sealing hole 316, the piston ring one 311 extrudes the space between the piston ring one 311 and the piston ring two 315, so that the bubbles between the piston ring one 311 and the piston ring two 315 are discharged. After the bubbles are discharged, the piston ring one 311 drives the piston ring two 315 to move downward, so that the piston ring two 315 discharges the liquid metal below to the circulation flow channel. When the piston ring one 311 moves upward, the piston ring two 315 stops moving, so that the piston ring one 311 draws the bubbles and liquid metal in the liquid inlet hole 223 to between the piston ring one 311 and the piston ring two 315. The above steps are repeatedly continued. Through the mutual movement between the piston ring one 311 and the piston ring two 315, the bubbles and liquid metal in the inside of the static chamber 213 are completely separated, the bubbles are effectively prevented from entering the liquid metal circulation flow channel, so as to ensure the stability and safety of the liquid metal circulation process.

[0031] Further, the fixed connection above, unless otherwise specified and limited, should be understood broadly, for example, can be welding, or gluing, or integrally formed with the usual means well known to those skilled in the art.

[0032] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A high-temperature liquid metal circulating pump with noise reduction, comprising a liquid outlet pipe (1), a flow guide pipe (11) and a liquid inlet pipe (12), characterized in that: The flow guide pipe (11) is fixedly installed in the inside of the liquid outlet pipe (1) and the liquid inlet pipe (12), the inside of the flow guide pipe (11) is fixedly installed with a flow guide frame (21), the inner side of the flow guide frame (21) is rotatably installed with a rotating shaft (141), the outer peripheral wall of the rotating shaft (141) is slidably sleeved with a rotating cylinder (22), the inner side of the flow guide frame (21) is provided with a static cavity (213), the rotating cylinder (22) is movably installed on the inner side of the static cavity (213), the inside of the liquid inlet pipe (12) is slidably installed with a flow guide cylinder (23), the rotating cylinder (22) is rotatably installed on the inner side of the flow guide cylinder (23), the bottom of the rotating shaft (141) is fixedly installed with an impeller (143), the sidewall of the rotating shaft (141) is fixedly sleeved with a flow guide wheel (142), the flow guide wheel (142) is located between the impeller (143) and the flow guide cylinder (23), the top of the flow guide frame (21) is fixedly installed with a driving motor (14), the driving motor (14) is located on the outside of the liquid outlet pipe (1), and the output shaft of the driving motor (14) is fixedly connected with the rotating shaft (141).

2. The high-temperature liquid metal circulating pump of claim 1, wherein: The sidewall of the rotating cylinder (22) is integrally formed with a sliding rod (221), the inner side of the flow guide frame (21) is provided with a corrugated groove (216), and the sliding rod (221) is slidably installed in the inside of the corrugated groove (216).

3. The high temperature liquid metal circulating pump of claim 1, wherein: The sidewall of the rotating cylinder (22) is provided with a plurality of uniformly distributed spiral grooves (222), the inside of the rotating cylinder (22) is provided with a plurality of uniformly distributed liquid inlet holes (223), the liquid inlet holes (223) and the spiral grooves (222) correspond to each other and are in communication with each other, and the liquid inlet holes (223) are located in the inside of the static cavity (213).

4. The high-temperature liquid metal circulating pump of claim 3, wherein: The inner side of the flow guide cylinder (23) is welded with a plurality of uniformly distributed flow guide pieces two (231), the sidewalls on both sides of the flow guide pieces two (231) are provided with air guide grooves (232), the top of the flow guide pieces two (231) is provided with a gas collecting groove (233), the air guide grooves (232) and the gas collecting groove (233) are in communication, and the gas collecting groove (233) is located below the spiral groove (222).

5. The high temperature liquid metal circulating pump of claim 3, wherein: The inside of the rotating cylinder (22) is provided with an exhaust hole three (225), the exhaust hole three (225) is respectively in communication with the inside of the static cavity (213) and the flow guide frame (21), the inside of the static cavity (213) is slidably installed with a piston ring one (311) and a piston ring two (315), the piston ring one (311) is rotatably sleeved on the outside of the rotating cylinder (22), the piston ring two (315) is movably sleeved on the outside of the rotating cylinder (22), the piston ring one (311) is located between the liquid inlet hole (223) and the exhaust hole three (225), and the piston ring two (315) is located below the piston ring one (311).

6. The high temperature liquid metal circulating pump of claim 5, wherein: The bottom of the piston ring one (311) is integrally formed with a sealing plug (314), the sidewall of the piston ring two (315) is provided with a sealing hole (316), the sealing plug (314) is slidably inserted into the sealing hole (316), and the inside of the piston ring two (315) is hollow.

7. The high temperature liquid metal circulating pump of claim 5, wherein: The sidewall of the piston ring one (311) is provided with an exhaust hole four (313), the top of the exhaust hole four (313) is provided with a one-way valve one (312), the sidewall of the liquid discharge pipe (1) and the flow guide frame (21) is respectively provided with an exhaust hole one (13) and an exhaust hole two (211), and the exhaust hole one (13) and the exhaust hole two (211) correspond to each other.

8. The high temperature liquid metal circulating pump of claim 5, wherein: The bottom of the static cavity (213) is provided with a liquid discharge hole (214), the end, connected with the flow guide pipe (11), of the liquid discharge hole (214) is upwardly inclined, the liquid discharge hole (214) is located below the piston ring two (315), the inside of the liquid discharge hole (214) is provided with a one-way pressure valve (215), and the inside of the liquid inlet hole (223) is provided with a one-way valve two (224).

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