Structure for balancing axial force of mechanical pump

Abstract

The invention relates to the technical field of mechanical pumps, and particularly discloses a structure for balancing the axial force of a mechanical pump, the structure comprises a mechanical pump body and a mechanical main shaft, mechanical pump inlets are formed in the two sides of the mechanical pump body, a mechanical pump outlet is formed in the bottom of the mechanical pump body, and a balancing disc is mounted on the outer wall of the mechanical main shaft; a radial flow supply hole is formed in the mechanical main shaft; through accurate pressure monitoring and reasonable radial flow supply design, sufficient and stable balance force can be generated, axial force generated when the mechanical pump body operates is effectively balanced, axial displacement is reduced, abrasion of mechanical parts is reduced, and the service life of the mechanical pump body is prolonged; a dynamic balance adjusting mechanism enables the mechanical pump body to automatically adjust the balance force according to different working conditions, the mechanical pump body adapts to changes of parameters such as flow and pressure, and it is ensured that the mechanical pump body can keep good operation performance under various working conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical pumps, and particularly relates to a structure for balancing the axial force of a mechanical pump. Background Art

[0002] After the hydraulic performance indexes are determined, the axial load of the mechanical pump set is roughly fixed. In conventional application scenarios, there are usually the following feasible ways to adjust the axial force:

[0003] Opening balance holes: Balance holes are opened at the rear cover plate of the centrifugal impeller, and the axial force is balanced by means of the fluid flow characteristics; adopting double-suction design: Using a double-suction impeller structure, the fluid enters the impeller symmetrically from both sides, so as to achieve the effect of balancing the axial force; adding back blades: Adding back blades on the back of the impeller to adjust the axial force by changing the fluid flow state; symmetric impeller arrangement: Arranging the impellers symmetrically to balance the axial force by using the symmetry of the fluid; adding a balance disk: Balancing and adjusting the axial force by virtue of the structural characteristics of the balance disk.

[0004] However, for axial-flow and mixed-flow mechanical pumps, the above adjustment methods have many limitations. The setting of balance holes, the application of double-suction impellers, and the addition of back blades cannot effectively balance the axial force of such pumps; using the method of symmetrically arranging auxiliary impellers will make the overall structure of the pump complex and increase the manufacturing and maintenance costs; the ordinary balance disk structure is difficult to obtain pressure from the high-pressure area of axial-flow and mixed-flow impellers, making it difficult to achieve axial force balance. Therefore, a structure for balancing the axial force of a mechanical pump is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a structure for balancing the axial force of a mechanical pump, so as to solve the problem that the ordinary balance disk structure is difficult to obtain pressure from the high-pressure area of axial-flow and mixed-flow impellers and is difficult to achieve axial force balance.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A structure for balancing the axial force of a mechanical pump, including a mechanical pump body and a mechanical main shaft. Mechanical pump inlets are opened on both sides of the mechanical pump body, a mechanical pump outlet is opened at the bottom of the mechanical pump body, a balance disk is installed on the outer wall of the mechanical main shaft, a radial flow supply hole is opened inside the mechanical main shaft, a pressure extraction hole is opened below the radial flow supply hole inside the mechanical main shaft, and a pressure extraction port is opened at the bottom of the mechanical main shaft.

[0008] As can be seen from the above, the structure for balancing the axial force of the mechanical pump mainly consists of key components such as the mechanical pump body, mechanical main shaft, mechanical pump inlet, mechanical pump outlet, balance disk, radial flow supply holes, pressure tapping holes, and pressure tapping ports. The mechanical main shaft is located in the middle inside the mechanical pump body. The balance disk is installed on the outer wall of the mechanical main shaft. The radial flow supply holes are opened inside the mechanical main shaft and on both sides of the balance disk. The pressure tapping holes are also opened inside the mechanical main shaft and below the radial flow supply holes. The pressure tapping port is opened at the bottom of the mechanical main shaft. Two mechanical pump inlets are symmetrically arranged on both sides of the mechanical pump body. The mechanical pump outlet is opened at the bottom of the mechanical pump body;

[0009] When the mechanical pump body is operating, the fluid enters the mechanical pump body from the mechanical pump inlet, forming a certain pressure field inside the mechanical pump body. The pressure tapping port is located below the mechanical pump body and is in direct contact with the fluid inside the pump, enabling accurate acquisition of the actual pressure inside the pump. The fluid pressure enters the pressure tapping hole through the pressure tapping port. Since the bottom of the pressure tapping hole is correspondingly connected to the pressure tapping port and the radial flow supply hole is connected to the pressure tapping hole, the fluid pressure is sequentially transmitted through the pressure tapping port and the pressure tapping hole to the radial flow supply hole. This pressure transmission method ensures that the pressure inside the radial flow supply hole can reflect the pressure condition inside the pump in real time, providing an accurate pressure basis for subsequent axial force balance adjustment;

[0010] After the fluid pressure enters the radial flow supply hole through the pressure tapping hole, under the action of the pressure difference, the fluid flows along the radial flow supply hole to both sides of the balance disk. The special design of the radial flow supply hole enables the fluid to flow evenly and stably towards the balance disk, providing a reliable fluid supply for the formation of the balancing force. After the fluid flows out of the radial flow supply hole, it acts on both sides of the balance disk. Since there is a difference in fluid pressure on both sides of the balance disk (this pressure difference is jointly determined by the pressure distribution inside the pump and the design of the radial flow supply hole), a balancing force opposite to the direction of the axial force is generated on the balance disk. This balancing force can effectively offset the axial force generated during the operation of the mechanical pump body, reduce the axial load on the mechanical main shaft, reduce the wear of the bearings, and improve the operating stability and reliability of the mechanical pump body;

[0011] When the operating conditions of the mechanical pump body change, such as when parameters such as flow rate and pressure change, the pressure distribution inside the pump will also be adjusted accordingly. At this time, the pressure signal obtained by the pressure tapping port will reflect this change in real time and be transmitted to both sides of the balance disk through the pressure tapping hole and the radial flow supply hole. Since the fluid pressure inside the radial flow supply hole can automatically adjust according to the change in the pump pressure, the balancing forces on both sides of the balance disk will also change dynamically to adapt to the new operating condition requirements and achieve dynamic balance of the axial force;

[0012] In the present invention, the mechanical main shaft is located at the middle position inside the mechanical pump body, and the two mechanical pump inlets are symmetrically arranged. This structural layout makes the fluid flow inside the pump more uniform and the pressure distribution more stable. At the same time, the design that the radial fluid supply holes are located on both sides of the balance disk and are correspondingly connected to the pressure tapping holes ensures that the fluid can accurately and quickly transmit the pressure signal, improving the accuracy and response speed of dynamic balance adjustment;

[0013] By setting the above technical solutions, the present invention realizes the precise balance of the axial force of the mechanical pump body by installing a balance disk on the outer wall of the mechanical main shaft and ingeniously designing the connection mode of the radial fluid supply holes, pressure tapping holes and pressure tapping ports. The pressure tapping port is located below the mechanical pump body and can obtain accurate pressure information inside the pump in real time. The fluid pressure is transmitted to the radial fluid supply holes through the pressure tapping holes, and then a balance force opposite to the direction of the axial force is formed on both sides of the balance disk. This design enables the balance force to automatically adjust according to the change of the axial force, effectively offsetting the axial force, reducing the axial displacement of the mechanical main shaft, and improving the operation stability of the mechanical pump body; The effective balance of the axial force significantly reduces the axial load on the bearing and the degree of bearing wear; The reduction of bearing wear extends the service life of the bearing, reduces the equipment downtime for maintenance caused by bearing failures, and reduces the maintenance cost;

[0014] During the actual operation of the mechanical pump body, parameters such as flow rate and pressure will fluctuate with the change of process requirements. The dynamic balance adjustment mechanism of the present invention can adjust the magnitude of the balance force in real time according to the change of these parameters. When the flow rate increases or the pressure rises, the pressure distribution inside the pump changes, and the pressure signal obtained by the pressure tapping port changes accordingly. It is transmitted to both sides of the balance disk through the pressure tapping holes and radial fluid supply holes, causing the balance force to automatically increase to adapt to the new working conditions requirements and ensuring that the mechanical pump body always maintains a good axial force balance state; The mechanical main shaft is located at the middle position inside the mechanical pump body, and the two mechanical pump inlets are symmetrically arranged. This structural layout makes the fluid flow inside the pump more uniform and the pressure distribution more stable. Even under complex working conditions, it can ensure the smooth flow of the fluid inside the pump body and reduce the influence of local pressure fluctuations caused by uneven fluid flow on the axial force balance, further improving the adaptability of the present invention to different working conditions;

[0015] The structure for balancing the axial force of the mechanical pump body adopts a simple design concept, with tight connections between components and stable and reliable structure. At the same time, the machining accuracy of the radial fluid supply holes, pressure tapping holes and pressure tapping ports is high, ensuring the smoothness of fluid flow and the accuracy of pressure transmission, and improving the operation reliability of the entire structure; Due to the effective balance of the axial force, the mechanical pump body operates more smoothly, reducing mechanical failures caused by excessive axial force. For example, it avoids problems such as mechanical seal damage and bearing jamming caused by excessive axial displacement of the mechanical main shaft, reduces the failure rate of the mechanical pump body, and improves the availability and production efficiency of the equipment;

[0016] Traditional axial force balance structures may increase the flow resistance of the fluid, resulting in a decrease in the efficiency of the pump. However, through the optimization of the fluid supply structure in the present invention, the flow of the fluid in the radial fluid supply holes is smoother, reducing energy losses. During the process of the fluid forming a balanced force on both sides of the balance disk, the energy conversion efficiency is high, enabling the mechanical pump body to maintain a high operating efficiency while balancing the axial force, thereby reducing energy consumption.

[0017] Preferably, the mechanical main shaft is located inside the mechanical pump body, and the pressure tapping port is located below the mechanical pump body.

[0018] Preferably, the two mechanical pump inlets are symmetrically arranged.

[0019] Preferably, the radial fluid supply holes are located on both sides of the balance disk.

[0020] Preferably, the balance disk is located above the mechanical pump body.

[0021] Preferably, the radial fluid supply holes and the pressure tapping holes are correspondingly connected and arranged.

[0022] Preferably, the mechanical main shaft is located at the middle position inside the mechanical pump body.

[0023] Preferably, the bottom of the pressure tapping hole is correspondingly connected to the pressure tapping port, and the radial fluid supply holes are connected to the pressure tapping port through the pressure tapping hole.

[0024] In summary, through precise pressure monitoring and reasonable radial fluid supply design, the present invention can generate sufficient and stable balanced forces, effectively balance the axial force during the operation of the mechanical pump body, reduce axial displacement, reduce the wear of mechanical components, and extend the service life of the mechanical pump body; the dynamic balance adjustment mechanism enables the present invention to automatically adjust the magnitude of the balanced force according to different working conditions, adapt to changes in parameters such as flow rate and pressure, and ensure that the mechanical pump body can maintain good operating performance under various working conditions; the overall structure adopts a simple design, the components are tightly connected, and the operation is stable and reliable. The structure for balancing the axial force of the mechanical pump body realizes the efficient, precise, and dynamic balance of the axial force of the mechanical pump body through reasonable pressure establishment and monitoring, radial fluid supply and balanced force formation, and dynamic balance adjustment mechanism, and has significant technical advantages and application values.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The present invention realizes the precise balance of the axial force of the mechanical pump body by installing a balance disk on the outer wall of the mechanical main shaft and ingeniously designing the connection mode of the radial flow supply holes, pressure tapping holes and pressure tapping ports. The pressure tapping port is located below the mechanical pump body, which can obtain accurate pressure information inside the pump in real time. The fluid pressure is transmitted to the radial flow supply holes through the pressure tapping holes, and then a balancing force opposite to the direction of the axial force is formed on both sides of the balance disk. This design enables the balancing force to automatically adjust according to the change of the axial force, effectively offset the axial force, reduce the axial displacement of the mechanical main shaft, and improve the operation stability of the mechanical pump body; the effective balance of the axial force significantly reduces the axial load of the bearing and the wear degree of the bearing; the reduction of the bearing wear prolongs the service life of the bearing, reduces the equipment downtime for maintenance caused by bearing failures, and reduces the maintenance cost;

[0027] In summary, through precise pressure monitoring and reasonable radial flow supply design, the present invention can generate sufficient and stable balancing forces, effectively balance the axial force during the operation of the mechanical pump body, reduce the axial displacement, reduce the wear of mechanical components, and prolong the service life of the mechanical pump body; the dynamic balance adjustment mechanism enables the present invention to automatically adjust the magnitude of the balancing force according to different working conditions, adapt to changes in parameters such as flow rate and pressure, and ensure that the mechanical pump body can maintain good operation performance under various working conditions; the overall structure adopts a simple design, the components are tightly connected, and the operation is stable and reliable. The structure for balancing the axial force of the mechanical pump body realizes the efficient, precise and dynamic balance of the axial force of the mechanical pump body through reasonable pressure establishment and monitoring, radial flow supply and balancing force formation, and dynamic balance adjustment mechanism, and has significant technical advantages and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the balancing force of the present invention downward;

[0029] Figure 2 It is a structural diagram of the balancing force of the present invention upward.

[0030] In the figure: 1, mechanical pump body; 2, mechanical main shaft; 3, radial flow supply hole; 4, pressure tapping hole; 5, balance disk; 6, pressure tapping port; 7, mechanical pump outlet; 8, mechanical pump inlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0032] As Figure 1 、 Figure 2As shown in the figure, a structure for balancing the axial force of a mechanical pump includes a mechanical pump body 1 and a mechanical main shaft 2. Mechanical pump inlets 8 are provided on both sides of the mechanical pump body 1, and a mechanical pump outlet 7 is provided at the bottom of the mechanical pump body 1. A balance disk 5 is installed on the outer wall of the mechanical main shaft 2. A radial flow supply hole 3 is provided inside the mechanical main shaft 2, and a pressure tapping hole 4 is provided below the radial flow supply hole 3 inside the mechanical main shaft 2. A pressure tapping port 6 is provided at the bottom of the mechanical main shaft 2.

[0033] The present invention is further described in detail. The mechanical main shaft 2 is located inside the mechanical pump body 1, and the pressure tapping port 6 is located below the mechanical pump body 1; the two mechanical pump inlets 8 are symmetrically arranged; the radial flow supply holes 3 are located on both sides of the balance disk 5; the balance disk 5 is located above the mechanical pump body 1; the radial flow supply holes 3 and the pressure tapping holes 4 are correspondingly connected; the mechanical main shaft 2 is located at the middle position inside the mechanical pump body 1, the bottom of the pressure tapping hole 4 is correspondingly connected to the pressure tapping port 6, and the radial flow supply holes 3 and the pressure tapping port 6 are connected through the pressure tapping hole 4.

[0034] As can be seen from the above, the structure for balancing the axial force of the mechanical pump mainly consists of key components such as the mechanical pump body 1, the mechanical main shaft 2, the mechanical pump inlets 8, the mechanical pump outlet 7, the balance disk 5, the radial flow supply holes 3, the pressure tapping holes 4, and the pressure tapping port 6. The mechanical main shaft 2 is located at the middle position inside the mechanical pump body 1. The balance disk 5 is installed on the outer wall of the mechanical main shaft 2. The radial flow supply holes 3 are provided inside the mechanical main shaft 2 and are located on both sides of the balance disk 5. The pressure tapping holes 4 are also provided inside the mechanical main shaft 2 and are located below the radial flow supply holes 3. The pressure tapping port 6 is provided at the bottom of the mechanical main shaft 2. The two mechanical pump inlets 8 are symmetrically arranged on both sides of the mechanical pump body 1, and the mechanical pump outlet 7 is provided at the bottom of the mechanical pump body 1.

[0035] When the mechanical pump body 1 operates, the fluid enters the mechanical pump body 1 from the mechanical pump inlets 8, forming a certain pressure field inside the mechanical pump body 1. The pressure tapping port 6 is located below the mechanical pump body 1 and is in direct contact with the fluid inside the pump, capable of accurately obtaining the actual pressure inside the pump. The fluid pressure enters the pressure tapping hole 4 through the pressure tapping port 6. Since the bottom of the pressure tapping hole 4 is correspondingly connected to the pressure tapping port 6 and the radial flow supply holes 3 are connected to the pressure tapping holes 4, the fluid pressure is sequentially transmitted through the pressure tapping port 6 and the pressure tapping hole 4 to the radial flow supply holes 3. This pressure transmission method ensures that the pressure inside the radial flow supply holes 3 can reflect the pressure condition inside the pump in real time, providing an accurate pressure basis for subsequent axial force balance adjustment.

[0036] When the fluid pressure enters the radial supply hole 3 through the pressure tapping hole 4, under the action of the pressure difference, the fluid flows along the radial supply hole 3 to both sides of the balance disk 5. The special design of the radial supply hole 3 enables the fluid to flow to the balance disk 5 evenly and stably, providing a reliable fluid supply for the formation of the balance force. After the fluid flows out of the radial supply hole 3, it acts on both sides of the balance disk 5. Since there is a pressure difference between the fluids on both sides of the balance disk 5 (this pressure difference is jointly determined by the pressure distribution inside the pump and the design of the radial supply hole 3), a balance force opposite to the direction of the axial force is generated on the balance disk 5. This balance force can effectively offset the axial force generated during the operation of the mechanical pump body 1, reduce the axial load on the mechanical main shaft 2, reduce the wear of the bearings, and improve the operation stability and reliability of the mechanical pump body 1.

[0037] When the operating conditions of the mechanical pump body 1 change, such as when parameters such as flow rate and pressure change, the pressure distribution inside the pump will also be adjusted accordingly. At this time, the pressure signal obtained by the pressure tapping port 6 will reflect this change in real time and be transmitted to both sides of the balance disk 5 through the pressure tapping hole 4 and the radial supply hole 3. Since the fluid pressure inside the radial supply hole 3 can be automatically adjusted according to the change in the pump pressure, the balance forces on both sides of the balance disk 5 will also change dynamically accordingly to meet the requirements of the new operating conditions and achieve the dynamic balance of the axial force.

[0038] In the present invention, the mechanical main shaft 2 is located at the middle position inside the mechanical pump body 1, and the two mechanical pump inlets 8 are symmetrically arranged. This structural layout makes the fluid flow inside the pump more uniform and the pressure distribution more stable. At the same time, the design that the radial supply hole 3 is located on both sides of the balance disk 5 and corresponds to and communicates with the pressure tapping hole 4 ensures that the fluid can accurately and quickly transmit the pressure signal, improving the accuracy and response speed of the dynamic balance adjustment.

[0039] Through the setting of the above technical solutions, the present invention realizes the precise balance of the axial force of the mechanical pump body 1 by installing the balance disk 5 on the outer wall of the mechanical main shaft 2 and cleverly designing the connection mode of the radial supply hole 3, the pressure tapping hole 4 and the pressure tapping port 6. The pressure tapping port 6 is located below the mechanical pump body 1 and can obtain accurate pressure information inside the pump in real time. The fluid pressure is transmitted to the radial supply hole 3 through the pressure tapping hole 4, and then a balance force opposite to the direction of the axial force is formed on both sides of the balance disk 5. This design enables the balance force to be automatically adjusted according to the change in the axial force, effectively offset the axial force, reduce the axial displacement of the mechanical main shaft 2, and improve the operation stability of the mechanical pump body 1. The effective balance of the axial force significantly reduces the axial load on the bearings and the degree of bearing wear. The reduction of bearing wear extends the service life of the bearings, reduces the equipment downtime and maintenance time caused by bearing failures, and reduces the maintenance cost.

[0040] During the actual operation of the mechanical pump body 1, parameters such as flow rate and pressure will fluctuate with the changes in process requirements. The dynamic balance adjustment mechanism of the present invention can adjust the magnitude of the balance force in real time according to the changes in these parameters. When the flow rate increases or the pressure rises, the pressure distribution inside the pump changes, and the pressure signal obtained by the pressure tapping port 6 changes accordingly. It is transmitted to both sides of the balance disk 5 through the pressure tapping hole 4 and the radial flow supply hole 3, so that the balance force automatically increases to adapt to the requirements of the new working conditions and ensure that the mechanical pump body 1 always maintains a good axial force balance state. The mechanical main shaft 2 is located at the internal middle position of the mechanical pump body 1, and the two mechanical pump inlets 8 are symmetrically arranged. This structural layout makes the fluid flow inside the pump more uniform and the pressure distribution more stable. Even under complex working conditions, it can ensure the smooth flow of the fluid inside the pump body and reduce the influence of local pressure fluctuations caused by uneven fluid flow on the axial force balance, further improving the adaptability of the present invention to different working conditions.

[0041] The structure for balancing the axial force of the balance mechanical pump body 1 adopts a simple design concept, with tight connections between components and stable and reliable structure. At the same time, the processing precision of the radial flow supply hole 3, the pressure tapping hole 4, and the pressure tapping port 6 is high, ensuring the smoothness of fluid flow and the accuracy of pressure transmission, and improving the operation reliability of the entire structure. Due to the effective balance of the axial force, the operation of the mechanical pump body 1 is more stable, reducing mechanical failures caused by excessive axial force. For example, it avoids problems such as mechanical seal damage and bearing jamming caused by excessive axial displacement of the mechanical main shaft 2, reduces the failure rate of the mechanical pump body 1, and improves the availability and production efficiency of the equipment.

[0042] Traditional axial force balance structures may increase the flow resistance of the fluid, resulting in a decrease in the efficiency of the pump. However, the present invention optimizes the flow supply structure to make the fluid flow more smoothly in the radial flow supply hole 3, reducing energy loss. During the process of forming the balance force on both sides of the balance disk 5, the energy conversion efficiency is high, enabling the mechanical pump body 1 to maintain a high operating efficiency while balancing the axial force and reducing energy consumption. In the context of the increasingly tight energy situation and continuously improving environmental protection requirements, the high energy utilization efficiency of the present invention has important practical significance. It can not only help enterprises reduce production costs and improve economic benefits, but also conform to the national policy orientation of energy conservation and emission reduction, contributing to the sustainable development of the industrial field.

[0043] In summary, through precise pressure monitoring and reasonable radial flow supply design, the present invention can generate sufficient and stable balancing forces, effectively balance the axial force during the operation of the mechanical pump body 1, reduce axial displacement, decrease the wear of mechanical components, and extend the service life of the mechanical pump body 1; the dynamic balance adjustment mechanism enables the present invention to automatically adjust the magnitude of the balancing force according to different working conditions, adapt to changes in parameters such as flow rate and pressure, and ensure that the mechanical pump body 1 can maintain good operating performance under various working conditions; the overall structure adopts a simple design, with tight connections between components and stable and reliable operation, enabling the structure for balancing the axial force of the mechanical pump body 1 to achieve efficient, precise, and dynamic balance of the axial force of the mechanical pump body 1 through reasonable pressure establishment and monitoring, radial flow supply and balancing force formation, and dynamic balance adjustment mechanism, having significant technical advantages and application values.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for balancing the axial force of a mechanical pump, characterized in that, It includes a mechanical pump body (1) and a mechanical main shaft (2). Both sides of the mechanical pump body (1) are provided with mechanical pump inlets (8), the bottom of the mechanical pump body (1) is provided with a mechanical pump outlet (7), a balance disk (5) is installed on the outer wall of the mechanical main shaft (2), a radial flow supply hole (3) is arranged inside the mechanical main shaft (2), a pressure tapping hole (4) is arranged below the radial flow supply hole (3) inside the mechanical main shaft (2), and a pressure tapping port (6) is arranged at the bottom of the mechanical main shaft (2).

2. The structure for balancing the axial force of a mechanical pump according to claim 1, wherein: The mechanical main shaft (2) is located inside the mechanical pump body (1), and the pressure tapping port (6) is located below the mechanical pump body (1).

3. A structure for balancing the axial force of a mechanical pump according to claim 1, characterized in that: The two mechanical pump inlets (8) are symmetrically arranged.

4. A structure for balancing the axial force of a mechanical pump according to claim 1, wherein: The radial flow supply hole (3) is located on both sides of the balance disk (5).

5. The structure for balancing the axial force of a mechanical pump according to claim 1, wherein: The balance disk (5) is located above the mechanical pump body (1).

6. A structure for balancing the axial force of a mechanical pump according to claim 1, characterized in that: The radial flow supply hole (3) and the pressure tapping hole (4) are correspondingly connected and arranged.

7. A structure for balancing the axial force of a mechanical pump according to claim 1, characterized in that: The mechanical main shaft (2) is located at the middle position inside the mechanical pump body (1).

8. A structure for balancing the axial force of a mechanical pump according to claim 1, characterized in that: The bottom of the pressure tapping hole (4) and the pressure tapping port (6) are correspondingly connected and arranged, and the radial flow supply hole (3) and the pressure tapping port (6) are connected through the pressure tapping hole (4).

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