High-temperature sub-liquid chemical pump

Abstract

The utility model relates to high temperature centrifugal pump technical field especially is concerned to a kind of high-temperature liquid chemical pump, including shell, the shell has liquid inlet and liquid outlet;Impeller, the impeller is located in the shell, the impeller is connected with impeller shaft, support assembly and packing assembly are installed between the impeller shaft and the shell, the support assembly is located the lower side of packing assembly;Water pan assembly, the water pan assembly is installed on the packing assembly, and the upper side of the water pan assembly is communicated with the liquid inlet;Middle shaft, the middle shaft one end is connected with the impeller shaft, and the middle shaft other end is connected with power component.The utility model is beneficial to reduce the damage to motor, bearing when conveying high-temperature fluid, prolong the service life of chemical pump.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature centrifugal pump technology, and in particular to a high-temperature submersible chemical pump. Background Technology

[0002] A submersible pump is a pump that operates by immersing its body below the surface of a liquid. This type of pump can effectively avoid cavitation problems caused by air entering the pump body when transporting liquids. Furthermore, since the pump body is directly immersed in the liquid, it is relatively easy to obtain the liquid without the need for an additional priming device, which has certain advantages.

[0003] When centrifugal pumps are used as submersible pumps, they offer several advantages. First, they can deliver liquids relatively stably, and the flow rate and head can be adjusted according to parameters such as impeller size and speed, providing a degree of flexibility. Second, centrifugal pumps operate with relatively low noise, offering quieter working conditions. Third, centrifugal pumps are highly adaptable, capable of delivering liquids of varying viscosities and properties. By selecting appropriate materials and structures, they can meet the needs of various liquid deliveries, making them widely applicable in submersible pump applications.

[0004] High-temperature submersible pumps operate in high-temperature environments and transport high-temperature fluids. This causes the heat from the fluid to be transferred through the pump shaft to components such as bearings and motors. Prolonged exposure to such high temperatures will cause the temperatures of these components to rise continuously, potentially leading to a series of problems. For example, the lubricating oil inside bearings may deteriorate due to the high temperatures, losing its lubricating effect and causing accelerated wear and eventual damage. In high-temperature environments, the insulation material of motors will degrade, and short circuits in the windings may occur, affecting the normal operation of the motor. These problems prevent bearings and motors from functioning properly, thus reducing their service life.

[0005] Therefore, those skilled in the art are dedicated to developing a high-temperature submersible chemical pump that can reduce damage to motors and bearings and extend the service life of chemical pumps when transporting high-temperature fluids. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a high-temperature submersible chemical pump that reduces damage to the motor and bearings and extends the service life of the chemical pump when transporting high-temperature fluids.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] A high-temperature submersible chemical pump, including

[0009] A housing having a liquid inlet and a liquid outlet;

[0010] An impeller is located inside the housing. The impeller is connected to an impeller shaft. A support assembly and a packing assembly are installed between the impeller shaft and the housing. The support assembly is located below the packing assembly.

[0011] A water receiving tray assembly is mounted on the packing assembly, and the upper side of the water receiving tray assembly communicates with the liquid inlet.

[0012] An intermediate shaft, one end of which is connected to the impeller shaft, and the other end of which is connected to a power assembly.

[0013] The beneficial effects of adopting the above scheme are: when the impeller transports high-temperature fluid, the high-temperature fluid flows into the water receiving tray assembly after being filtered by the support assembly and the packing assembly. It is used not only to lubricate the support assembly and the packing assembly, but also to drive the support assembly and the packing assembly to generate heat due to friction and heat transfer. When the high-temperature fluid is transported to the liquid inlet, it forms an effective thermal isolation, reduces the upward transfer of heat from the high-temperature fluid, and makes the temperature of the support assembly and the packing assembly close to the temperature of the high-temperature fluid, thereby reducing the heat generated by friction.

[0014] The combination of the support assembly and the packing assembly provides good support and sealing for the impeller shaft, effectively reducing axial movement and improving shaft stability, thereby ensuring the stable operation of the centrifugal pump.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] Furthermore, the support assembly includes a support sleeve, the impeller shaft passes through the support sleeve, and a plurality of spaced connecting pieces are connected to the outside of the support sleeve, with the other end of each connecting piece connected to the housing.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the support assembly composed of the support sleeve and multiple spaced connecting plates can effectively disperse and transmit the axial force of the impeller shaft to the housing, thereby enhancing the axial stability of the impeller shaft, reducing axial movement, and improving the operating stability of the pump.

[0018] It also facilitates the upward flow of high-temperature fluid into the packing assembly.

[0019] Furthermore, the packing assembly includes a packing bottom cover, packing material, and a packing gland. The packing bottom cover is located on the upper side of the support assembly and has a water leakage hole. The housing has a support, and the support has a packing cavity. The packing material is disposed in the packing cavity, and the packing gland is disposed on the upper side of the packing cavity.

[0020] The beneficial effects of adopting the above-mentioned further solution are: the packing assembly consisting of the packing bottom cover, packing and packing gland can effectively fill the gap between the impeller shaft and the shell by compressing and deforming the packing in the packing cavity, maintaining the temperature of the impeller shaft, and controlling the rate of high-temperature fluid seeping from the packing to the water receiving pan assembly.

[0021] Furthermore, the water receiving tray assembly includes a water receiving tray, which is mounted on the support. The upper side of the water receiving tray is connected to the liquid inlet through a return water pipe, and a regulating valve is also installed on the return water pipe.

[0022] The beneficial effects of adopting the above-mentioned further solution are: the water receiving tray is installed on the support and connected to the liquid inlet through the return water pipe, so that the small amount of liquid leaking from the packing cavity can be collected and flowed back to the liquid inlet, thereby cooling the bearing and other components, reducing the bearing temperature, and extending the bearing service life.

[0023] Furthermore, the intermediate shaft is made of cermet.

[0024] The beneficial effects of adopting the above-mentioned further solution are: the intermediate shaft is made of cermet, which has high hardness, high wear resistance and low thermal conductivity, and can maintain good mechanical properties and dimensional stability in high temperature environment, and reduce heat transfer upward.

[0025] Furthermore, the power assembly includes a magnetic induction assembly connected to the end of the intermediate shaft. A magnetic assembly cooperating with the magnetic induction assembly is disposed outside the magnetic induction assembly. The rotation of the magnetic assembly drives the magnetic induction assembly and the intermediate shaft to rotate. The magnetic assembly is also connected to a motor assembly.

[0026] The beneficial effects of adopting the above-mentioned further solution are: the magnetic coupling between the magnetic induction component and the magnetic component realizes the contactless transmission of power, avoids the wear and failure risk of traditional mechanical seals or couplings in high temperature environments, improves the reliability and efficiency of power transmission, can effectively reduce vibration and noise, and improve the operational stability of the pump.

[0027] At the same time, non-contact power transmission is used to reduce the further upward transfer of heat.

[0028] Furthermore, an isolation sleeve is provided between the magnetic induction component and the magnetic component.

[0029] The beneficial effect of adopting the above-mentioned further solution is that the isolation sleeve reduces the further upward transfer of heat.

[0030] Furthermore, the motor assembly includes a drive motor, which is mounted on a base. The output end of the drive motor is connected to a drive shaft via a coupling, and the end of the drive shaft is connected to the magnetic assembly.

[0031] The magnetic induction component and the magnetic component are disposed inside the mounting housing, and a cooling fan is also installed on the outer wall of the mounting housing.

[0032] The beneficial effects of adopting the above-mentioned further solution are: the coupling can effectively transmit the driving force of the motor, ensure the stable rotation of the drive shaft, thereby driving the magnetic components and intermediate shaft to rotate, improving the efficiency and reliability of power transmission, and ensuring the normal operation of the pump;

[0033] The cooling fan is mounted on the outer wall of the mounting housing, which can force-cool the magnetic induction component and the magnetic component, reduce the heat generated during operation, prevent high temperature from adversely affecting the performance of the magnetic component and the motor component, and extend the service life of the pump.

[0034] Furthermore, the drive shaft is fitted with a support bearing and a thrust bearing, which are mounted in a bearing mounting seat.

[0035] The beneficial effects of adopting the above-mentioned further solution are: the support bearing and the thrust bearing are installed in the bearing mounting seat, which can effectively withstand the radial and axial forces generated by the drive shaft during operation, improve the load-bearing capacity and operational stability of the drive shaft, and extend the service life of the drive shaft.

[0036] Furthermore, the outlet is connected to an outlet pipe assembly, which includes a connecting flange and a connecting pipe. The connecting flange is connected to the outlet, and the other end of the connecting flange is connected to an elbow and a pipe sleeve. The end of the connecting pipe passes through the pipe sleeve. The connecting pipe has a limiting disc, and a telescopic pipe cap is installed on the pipe sleeve. The connecting pipe is covered with packing material, which is located between the limiting disc and the telescopic pipe cap.

[0037] A fixing plate is provided outside the connecting pipe, and intermediate packing and intermediate pressure cap are provided between the fixing plate and the connecting pipe. A drain flange is also connected to the end of the connecting pipe.

[0038] The beneficial effects of adopting the above-mentioned further solution are: the liquid outlet pipe assembly adopts a sleeve and a connecting pipe, and the sleeve and the connecting pipe are sealed by a packing assembly, so that the sleeve and the connecting pipe are movably connected. When conveying high-temperature fluid, there is an expansion clearance space between the sleeve and the connecting pipe, which avoids thermal expansion causing deformation of the liquid outlet pipe assembly. Attached Figure Description

[0039] Figure 1 This is a cross-sectional plan view of a specific embodiment of the high-temperature submersible chemical pump of this utility model;

[0040] Figure 2 This is a schematic diagram of the support component structure according to a specific embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the packing assembly and water receiving tray assembly according to a specific embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the power component structure according to a specific embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the liquid outlet pipe assembly structure according to a specific embodiment of the present invention.

[0044] The attached diagram lists the components represented by each number as follows:

[0045] 1. Shell; 2. Inlet; 3. Outlet; 4. Impeller; 5. Impeller shaft; 6. Support assembly; 7. Packing assembly; 8. Water receiving tray assembly; 9. Intermediate shaft; 10. Power assembly; 11. Support sleeve; 12. Connecting plate; 13. Bottom cover; 14. Packing; 15. Packing gland; 16. Support; 17. Water receiving tray; 18. Return water pipe; 19. Control valve; 20. Magnetic induction assembly; 21. Magnetic assembly; 22. Isolation sleeve; 23. Drive motor; 24. Coupling; 25. Drive shaft; 26. Support bearing; 27. Thrust bearing; 28. Bearing mounting seat; 29. ​​Mounting shell; 30. Connecting pipe; 31. Elbow; 32. Pipe sleeve; 33. Limiting disc; 34. Telescopic pipe gland; 35. Packing packing; 36. Fixing plate; 37. Intermediate packing; 38. Intermediate gland; 39. Drain flange; 40. Connecting flange. Detailed Implementation

[0046] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", 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 utility model and simplifying the description, and do not indicate or imply that the system 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 utility model.

[0048] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a high-temperature submersible chemical pump includes...

[0051] The housing 1 has a liquid inlet 2 and a liquid outlet 3;

[0052] Impeller 4 is located inside housing 1 and is connected to impeller shaft 5. A support assembly 6 and a packing assembly 7 are installed between impeller shaft 5 and housing 1, with support assembly 6 located below packing assembly 7. During operation, impeller 4 drives liquid movement through the rotation of impeller shaft 5, achieving the liquid conveying function. Support assembly 6 supports impeller shaft 5, ensuring stable operation even under complex conditions such as high-speed rotation and liquid pressure. Packing assembly 7 prevents excessive liquid leakage from the gap between impeller shaft 5 and housing 1, ensuring the overall performance and efficiency of the chemical pump.

[0053] The water receiving pan assembly 8 is installed on the packing assembly 7, and its upper side is connected to the liquid inlet 2. During the liquid transportation process, a small amount of liquid will seep out from the packing assembly 7. The water receiving pan assembly 8 can collect the fluid from the lubrication and cooling support assembly 6 and the packing assembly 7 in a timely manner, preventing it from scattering randomly and causing pollution to the surrounding environment and avoiding adverse effects on other components. Furthermore, because it is connected to the liquid inlet 2, the collected liquid can return to the pump's inlet system, thereby completing the cooling and lubrication.

[0054] The intermediate shaft 9 is made of metal ceramic. It has good wear resistance, low heat transfer efficiency and corrosion resistance. One end of the intermediate shaft 9 is connected to the impeller shaft 5, and the other end of the intermediate shaft 9 is connected to the power assembly 10.

[0055] like Figure 1 , Figure 2As shown, in some embodiments, the support assembly 6 includes a support sleeve 11, with the impeller shaft 5 passing through it. Multiple spaced connecting pieces 12 are connected to the outside of the support sleeve 11, with the other end of each connecting piece 12 connected to the housing 1. The support sleeve 11 provides direct support for the impeller shaft 5, ensuring that the impeller shaft 5 maintains precise axial position and radial stability during rotation. The connecting pieces 12 are evenly distributed and connect the support sleeve 11 to the housing 1, allowing the supporting force to be evenly distributed on the housing 1. Simultaneously, the channel between adjacent connecting pieces 12 facilitates the upward flow of the conveyed fluid, enabling the fluid to smoothly pass through the support assembly 6 and reach the packing assembly 7, thereby achieving lubrication and cooling of both the support assembly 6 and the packing assembly 7.

[0056] like Figure 1 , Figure 3 As shown, in another embodiment, the packing assembly 7 includes a packing bottom cover 13, packing 14, and a packing gland 15. The packing bottom cover 13 is located on the upper side of the support assembly 6 and has a drainage hole, which allows a small amount of liquid to pass through so that the liquid can enter the packing cavity to lubricate and cool the packing 14. The housing 1 has a support 16 with a packing cavity. The packing 14 is disposed within the packing cavity, and the packing gland 15 is disposed on the upper side of the packing cavity. The packing 14 is compressed within the packing cavity, resulting in elastic deformation, and tightly conforms to the impeller shaft 5 and the inner wall of the packing cavity, thereby effectively sealing the gap between the impeller shaft 5 and the housing 1 and preventing large-scale liquid leakage. The packing gland 15 is used to apply pressure to the packing 14, maintaining the compressed state of the packing 14 and ensuring the durability of the sealing effect.

[0057] In this embodiment, the water receiving tray assembly 8 includes a water receiving tray 17, which is mounted on the support 16. The upper side of the water receiving tray 17 is connected to the liquid inlet 2 through a return water pipe 18. A small amount of liquid leaking from the packing cavity gathers in the water receiving tray 17 and flows back to the liquid inlet 2 through the return water pipe 18, realizing the recycling of the liquid. A regulating valve 19 is also installed on the return water pipe 18. The regulating valve 19 can adjust the flow rate of the returned liquid according to the actual working conditions to control the collection and return speed of the liquid in the water receiving tray assembly 8. This ensures that the liquid can effectively lubricate and cool the support assembly 6 and the packing assembly 7, and that the liquid will not accumulate too much in the water receiving tray assembly 8 due to poor return flow, which could cause other problems. It also prevents the liquid inlet 2 from sucking in too much gas and causing cavitation.

[0058] like Figure 1 , Figure 4As shown, the power assembly 10 includes a magnetic induction assembly 20, which is connected to the end of the intermediate shaft 9. A magnetic assembly 21, which cooperates with the magnetic induction assembly 20, is disposed outside the magnetic induction assembly 20. An isolation sleeve 22 is also provided between the magnetic induction assembly 20 and the magnetic assembly 21. Rotation of the magnetic assembly 21 drives the magnetic induction assembly 20 and the intermediate shaft 9 to rotate. The magnetic assembly 21 is also connected to a motor assembly. During operation, the magnetic assembly 21 rotates under the drive of the motor assembly, driving the magnetic induction assembly 20 to rotate through the interaction of magnetic fields, thereby driving the intermediate shaft 9 and the impeller shaft 5 to rotate, thus realizing the transport of liquid. The magnetic coupling between the magnetic induction assembly 20 and the magnetic assembly 21 achieves contactless power transmission, avoiding the wear and failure risks of traditional mechanical seals or couplings in high-temperature environments, and improving the reliability and efficiency of power transmission. Meanwhile, the absence of a direct mechanical connection reduces vibration and noise, improving the pump's operational stability. Furthermore, the absence of a direct mechanical connection reduces heat transfer. The isolation sleeve 22, positioned between the magnetic induction assembly 20 and the magnetic assembly 21, further reduces heat transfer from the intermediate shaft 9 to the motor assembly, protecting the motor assembly from high temperatures and extending its service life.

[0059] The magnetic induction assembly 20 and the magnetic assembly 21 are housed within the mounting housing 29. A cooling fan is also installed on the outer wall of the mounting housing 29. When the cooling fan is running, it can force-cool the magnetic induction assembly 20 and the magnetic assembly 21, effectively reducing the heat generated during operation. This prevents high temperatures from adversely affecting the performance of the magnetic induction assembly 20, the magnetic assembly 21, and the motor assembly, ensuring the stability of the magnetic properties of the magnetic assembly 21 and the performance of the motor, thereby extending the service life of the entire pump. Simultaneously, the cooling fan can remove the heat transferred upwards by the intermediate shaft 9.

[0060] The motor assembly includes a drive motor 23, which is mounted on a base. The output end of the drive motor 23 is connected to a drive shaft 25 via a coupling 24, and a magnetic assembly 21 is connected to the end of the drive shaft 25. The drive motor 23 provides the power source for the entire pump. Its output rotational power is transmitted to the drive shaft 25 via the coupling 24, and then to the magnetic assembly 21, thereby driving the magnetic induction assembly 20 and the intermediate shaft 9 to rotate. The coupling 24 can effectively transmit the driving force of the motor, compensate for minor deviations between the motor shaft and the drive shaft 25, ensure the stable rotation of the drive shaft 25, thereby driving the magnetic assembly 21 and the intermediate shaft 9 to rotate smoothly, improving the efficiency and reliability of power transmission, and ensuring the normal operation of the pump.

[0061] The drive shaft 25 is fitted with a support bearing 26 and a thrust bearing 27, which are mounted within a bearing mounting base 28. During operation, the support bearing 26 primarily bears the radial force generated by the drive shaft 25, ensuring radial stability during rotation and preventing vibration and swaying caused by radial forces. The thrust bearing 27 bears the axial force generated by the drive shaft 25, preventing axial movement and ensuring a suitable clearance between the magnetic assembly 21 and the magnetic induction assembly 20, thus ensuring the stability and transmission accuracy of the magnetic coupling. The support bearing 26 and thrust bearing 27, mounted within the bearing mounting base 28, provide stable support and positioning for the bearings, while also facilitating installation, maintenance, and replacement. This improves the load-bearing capacity and operational stability of the drive shaft 25, extends its service life, and ensures the long-term reliable operation of the entire pump's power system.

[0062] like Figure 1 , Figure 5 As shown, in one embodiment, the outlet 3 is connected to an outlet pipe assembly, which includes a connecting flange 40 and a connecting pipe 30. The connecting flange 40 is connected to the outlet 3, and the other end of the connecting flange 40 is connected to an elbow 31 and a sleeve 32. The elbow 31 is used to change the flow direction of the fluid. The end of the connecting pipe 30 passes through the sleeve 32, allowing for a certain degree of relative displacement within this space, thus adapting to thermal expansion and other conditions. The connecting pipe 30 has a limiting disc 33, and a telescopic tube cap 34 is installed on the sleeve 32. The connecting pipe 30 is covered with packing 35, which is located between the limiting disc 33 and the telescopic tube cap 34. When the telescopic tube cap 34 is tightened, the packing 35 is compressed and deformed, tightly filling the annular space between the connecting pipe 30 and the sleeve 32, thereby providing a good seal and preventing fluid leakage from this location.

[0063] The connecting pipe 30 also has a connector for connecting to a pressure gauge. A fixing plate 36 is provided on the outside of the connecting pipe 30. The fixing plate 36 provides support and fixation for the connecting pipe 30, making it more stable during fluid transportation and reducing problems such as shaking caused by fluid impact or vibration. An intermediate packing 37 and an intermediate gland 38 are also provided between the fixing plate 36 and the connecting pipe 30. A drain flange 39 is also connected to the end of the connecting pipe 30 for connecting with other connecting pipes.

[0064] In this invention, the support assembly 6 and the packing assembly 7 are first cooled and lubricated by fluid, and the heat generated by their friction is carried away, so that the support assembly 6 and the packing assembly 7 are close to the fluid temperature. The intermediate shaft 9 is made of ceramic metal to reduce the rate at which heat is transferred upward along the intermediate shaft 9. The end of the intermediate shaft 9 is powered by magnetic induction assembly 20 and magnetic assembly 21 to reduce direct metal contact. The cooling fan on the mounting shell 29 further carries away the heat, thereby reducing the heat transfer of the high-temperature fluid to the drive motor 23 and the bearing housing.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature submersible chemical pump, characterized in that: include The housing (1) has a liquid inlet (2) and a liquid outlet (3). Impeller (4), the impeller (4) is located inside the housing (1), the impeller (4) is connected to an impeller shaft (5), a support assembly (6) and a packing assembly (7) are installed between the impeller shaft (5) and the housing (1), the support assembly (6) is located below the packing assembly (7); Water receiving tray assembly (8), the water receiving tray assembly (8) is installed on the packing assembly (7), and the upper side of the water receiving tray assembly (8) is connected to the liquid inlet (2); An intermediate shaft (9) is connected to the impeller shaft (5) at one end and to the power assembly (10) at the other end.

2. The high-temperature submersible chemical pump according to claim 1, characterized in that: The support assembly (6) includes a support sleeve (11), the impeller shaft (5) passes through the support sleeve (11), and a plurality of spaced connecting pieces (12) are connected to the outside of the support sleeve (11). The other end of the connecting piece (12) is connected to the housing (1).

3. The high-temperature submersible chemical pump according to claim 1, characterized in that: The packing assembly (7) includes a packing bottom cover (13), packing (14) and a packing gland (15). The packing bottom cover (13) is located on the upper side of the support assembly (6). The packing bottom cover (13) has a water leakage hole. The housing (1) has a support (16). The support (16) has a packing cavity. The packing (14) is disposed in the packing cavity. The packing gland (15) is disposed on the upper side of the packing cavity.

4. The high-temperature submersible chemical pump according to claim 3, characterized in that: The water receiving tray assembly (8) includes a water receiving tray (17), which is mounted on the support (16). The upper side of the water receiving tray (17) is connected to the liquid inlet (2) through a return water pipe (18), and a regulating valve (19) is also installed on the return water pipe (18).

5. The high-temperature submersible chemical pump according to claim 1, characterized in that: The intermediate shaft (9) is made of cermet.

6. The high-temperature submersible chemical pump according to claim 1, characterized in that: The power assembly (10) includes a magnetic induction assembly (20), which is connected to the end of the intermediate shaft (9). A magnetic assembly (21) is provided outside the magnetic induction assembly (20) to cooperate with the magnetic induction assembly (20). The rotation of the magnetic assembly (21) drives the magnetic induction assembly (20) and the intermediate shaft (9) to rotate. The magnetic assembly (21) is also connected to a motor assembly.

7. The high-temperature submersible chemical pump according to claim 6, characterized in that: An isolation sleeve (22) is also provided between the magnetic induction component (20) and the magnetic component (21).

8. The high-temperature submersible chemical pump according to claim 6, characterized in that: The motor assembly includes a drive motor (23), which is mounted on a base. The output end of the drive motor (23) is connected to a drive shaft (25) via a coupling (24), and the end of the drive shaft (25) is connected to the magnetic assembly (21). The magnetic induction component (20) and the magnetic component (21) are disposed inside the mounting housing (29), and a cooling fan is also installed on the outer wall of the mounting housing (29).

9. The high-temperature submersible chemical pump according to claim 8, characterized in that: The drive shaft (25) is fitted with a support bearing (26) and a thrust bearing (27), which are mounted in a bearing mounting seat (28).

10. The high-temperature submersible chemical pump according to claim 1, characterized in that: The outlet (3) is connected to an outlet pipe assembly, which includes a connecting flange (40) and a connecting pipe (30). The connecting flange (40) is connected to the outlet (3). The other end of the connecting flange (40) is connected to an elbow (31) and a sleeve (32). The end of the connecting pipe (30) passes through the sleeve (32). The connecting pipe (30) has a limiting disc (33). A telescopic tube cap (34) is installed on the sleeve (32). The connecting pipe (30) is covered with a packing packing (35). The packing packing (35) is located between the limiting disc (33) and the telescopic tube cap (34). A fixing plate (36) is provided outside the connecting pipe (30). An intermediate packing (37) and an intermediate pressure cap (38) are also provided between the fixing plate (36) and the connecting pipe (30). A drain flange (39) is also connected to the end of the connecting pipe (30).

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