A high-temperature medium condensate pump

Abstract

This invention discloses a high-temperature medium condensate pump, belonging to the field of condensate pump technology. It includes a housing, a drive shaft rotatably connected within the housing, a rotary drive assembly, and a lifting drive assembly. The housing comprises a fixed housing, a telescopic housing, and a lifting housing, sequentially and sealed from top to bottom. The lifting housing has a connecting cavity and a pump chamber arranged vertically. The interiors of the connecting cavity, the telescopic housing, and the fixed housing communicate to form a water-passing cavity. The top outlet of the water-passing cavity is connected to a water outlet pipe. The water outlet of the pump chamber communicates with the connecting cavity through a connecting pipe. An impeller is rotatably connected within the pump chamber and fixedly connected to the drive shaft. The rotary drive assembly drives the drive shaft to rotate, and the lifting drive assembly drives the drive shaft and the lifting housing to move synchronously up and down. This invention, employing the above structure, provides a high-temperature medium condensate pump that facilitates adjustment of the pump inlet height and effectively reduces the probability of cavitation.

Description

Technical Field

[0001] This invention belongs to the field of condensate pump technology, and particularly relates to a high-temperature medium condensate pump. Background Technology

[0002] In practical applications of high-temperature medium condensate pumps, placing the inlet below the liquid surface is a standard and necessary design. Its core value lies in using the static pressure generated by the backflow height to stably increase the actual inlet pressure, counteracting the high saturated vapor pressure of the high-temperature medium and ensuring the pump's cavitation resistance from the outset. However, a larger backflow height is not always better. Excessive backflow height can lead to excessively high inlet pressure, potentially causing a corresponding increase in outlet pressure. Excessive internal pressure can affect the pump's sealing performance and put pressure on components such as the impeller and bearings, thus shortening their lifespan. Therefore, the actual inlet pressure should generally be greater than the high saturated vapor pressure of the high-temperature medium, with a certain safety margin. In actual engineering projects, the backflow height is typically designed to be 0.5-3m.

[0003] Existing high-temperature medium condensate pumps have the following problems during use: when the liquid level in the condensate tank drops or the medium temperature rises, the actual pressure at the pump inlet may be lower than the high saturated vapor pressure of the high-temperature medium, leading to sudden cavitation. To solve the above problems, a high-temperature medium condensate pump with adjustable pump inlet height is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature medium condensate pump that allows for easy adjustment of the pump inlet height and effectively reduces the probability of cavitation.

[0005] To achieve the above objectives, the present invention provides a high-temperature medium condensate pump, comprising a housing, a drive shaft rotatably connected within the housing, a rotary drive assembly, and a lifting drive assembly. The housing includes a fixed housing, a telescopic housing, and a lifting housing, which are sequentially and sealed from top to bottom. The lifting housing has a connecting cavity and a pump cavity arranged vertically. The connecting cavity, the interior of the telescopic housing, and the interior of the fixed housing communicate to form a water passage cavity. The top outlet of the water passage cavity is connected to a water outlet pipe. The water outlet of the pump cavity communicates with the connecting cavity through a connecting pipe. An impeller is rotatably connected within the pump cavity. The impeller is fixedly connected to the drive shaft. The rotary drive assembly drives the drive shaft to rotate, and the lifting drive assembly drives the drive shaft and the lifting housing to move synchronously up and down.

[0006] Preferably, the rotary drive assembly includes a transmission cylinder and a motor. The transmission cylinder is located at the top of the fixed housing and is rotatably connected to the fixed housing. The fixed housing, the transmission cylinder, and the drive shaft are coaxially arranged. A transmission gear is fixedly connected to the outer wall of the transmission cylinder. The transmission gear meshes with a drive gear. The drive gear is fixedly connected to the output shaft of the motor. An internal spline is provided on the inner wall of the transmission cylinder. The internal spline is adapted to the external spline structure located on the outer wall of the drive shaft. The external spline can slide vertically along the internal spline.

[0007] Preferably, the lifting drive assembly includes a support frame, a first hydraulic cylinder is fixedly connected to the top plate of the support frame, the bottom end of the telescopic rod of the first hydraulic cylinder passes through the top plate and is connected to the lifting plate, the bottom center of the lifting plate is detachably connected to a connector, the bottom end of the connector is rotatably connected to a convex ring and can drive the convex ring to move up and down synchronously, the convex ring is fixedly connected to the side wall of the drive shaft, and at least two transmission rods are fixedly connected to the lifting plate, the bottom end of the transmission rods is fixedly connected to a first horizontal protrusion at the bottom end of the side wall of the telescopic housing.

[0008] Preferably, the top end of the transmission rod passes through the top plate and connects to the support assembly.

[0009] Preferably, the support assembly includes a connecting ring and a second hydraulic cylinder. The bottom surface of the connecting ring is fixedly connected to the top end of the transmission rod. A polygonal connecting rod is fixedly connected to the inner wall of the connecting ring. The polygonal connecting rod surrounds the first hydraulic cylinder. The second hydraulic cylinder is fixedly connected to the top plate. The top end of the telescopic part of the second hydraulic cylinder is fixedly connected to an arc-shaped plate. The top surface of the arc-shaped plate is simultaneously opposite to the bottom surface of the connecting ring and the bottom surface of the polygonal connecting rod.

[0010] Preferably, both the rotary drive assembly and the lifting drive assembly are fixedly connected to the mounting base. The mounting base is fixedly connected to the side wall of the fixed housing. A guide cylinder is fixedly connected between the bottom surface of the mounting base and the second horizontal protrusion at the top of the side wall of the telescopic housing. The transmission rod passes through the guide cylinder and is slidably connected to the guide cylinder.

[0011] Preferably, the water outlet pipe passes through the mounting base, and a mounting ring is fixedly connected to the outer wall of the water outlet pipe. The mounting ring is detachably connected to the bottom surface of the mounting base.

[0012] Preferably, the telescopic housing is a metal bellows.

[0013] Preferably, the bottom end of the pump chamber is provided with a water inlet, which is connected to the filter element.

[0014] Preferably, the filter element includes a connector and a filter ball. The top end of the connector is detachably connected to the water inlet, and the bottom end of the connector is fixedly connected to the filter ball. The diameter of the filter ball is larger than the diameter of the water inlet. The surface of the filter ball is provided with uniformly distributed filter holes, and the inner cavity of the filter ball is connected to the water inlet through a water passage in the connector.

[0015] Therefore, the high-temperature medium condensate pump of the present invention, with the above-described structure, has the following beneficial effects:

[0016] By utilizing the combined use of the telescopic housing, lifting drive assembly, and rotary drive assembly, the condensate pump can adjust the height of the inlet without affecting normal operation. This ensures that the height difference between the inlet of the lifting housing and the liquid surface is always within a suitable range, thereby keeping the actual pressure at the pump inlet within a reasonable range. This helps to resist the high saturated vapor pressure of the high-temperature medium and ensures the pump's anti-cavitation capability from the source.

[0017] By using a lifting power device to maintain the height of the lifting housing, and by using support components to further maintain and support the height of the lifting housing, the overall stability of the condensate pump can be effectively guaranteed, thereby ensuring the stability of the condensate pump inlet.

[0018] Using filters can prevent impurities from entering the condensate pump and causing blockage and damage. Using filter balls can increase the filtration area of ​​the filter and reduce the frequency of filter replacement.

[0019] The combination design of the curved plate, polygonal connecting rod and connecting ring effectively prevents the curved plate from bending and deforming after long-term use.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of a high-temperature medium hydrophobic pump according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a transmission cylinder in a high-temperature medium condensate pump according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a drive shaft in a high-temperature medium condensate pump according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of an embodiment of a lifting drive component in a high-temperature medium condensate pump according to the present invention;

[0025] Figure 5This is a schematic diagram of the structure of a support component in a high-temperature medium condensate pump according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of a filter element in a high-temperature medium hydrophobic pump according to an embodiment of the present invention.

[0027] In the diagram: 1. Housing; 101. Fixed housing; 102. Telescopic housing; 103. Lifting housing; 2. Drive shaft; 3. Rotary drive assembly; 301. Transmission cylinder; 302. Motor; 303. Transmission gear; 304. Drive gear; 305. External spline; 4. Lifting drive assembly; 401. Support frame; 402. First hydraulic cylinder; 403. Lifting plate; 404. Connecting piece; 405. Convex ring; 406. Transmission rod; 5. Water outlet pipe; 6. Connecting pipe; 7. Impeller; 8. Support assembly; 81. Connecting ring; 82. Second hydraulic cylinder; 83. Polygonal connecting rod; 84. Arc plate; 9. Mounting base; 10. Second horizontal protrusion; 11. Guide cylinder; 12. Filter element; 121. Connector; 122. Filter ball; 13. First horizontal protrusion. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0030] Reference Figures 1-6 As shown, this embodiment provides a high-temperature medium condensate pump, including a housing 1, a drive shaft 2 rotatably connected within the housing 1, a rotary drive assembly 3, and a lifting drive assembly 4. The housing 1 includes a fixed housing 101, a telescopic housing 102, and a lifting housing 103, which are sequentially and sealed from top to bottom. The lifting housing 103 has a connecting cavity and a pump cavity arranged vertically. The connecting cavity, the interior of the telescopic housing 102, and the interior of the fixed housing 101 communicate to form a water-passing cavity, and the top outlet of the water-passing cavity is connected to a water outlet pipe 5. The water outlet of the pump cavity communicates with the connecting cavity through a connecting pipe 6. An impeller 7 is rotatably connected within the pump cavity, and the impeller 7 is fixedly connected to the drive shaft 2. The rotary drive assembly 3 drives the drive shaft 2 to rotate, and the lifting drive assembly 4 drives the drive shaft 2 and the lifting housing 103 to move synchronously up and down.

[0031] In use, the lifting drive assembly 4 is used to lift the lifting housing 103 according to the liquid level and liquid temperature. The pressure generated by the height difference between the inlet of the lifting housing 103 and the liquid level can resist the high saturated vapor pressure of the high-temperature medium and avoid the occurrence of cavitation in the condensate pump. Then, the rotation drive assembly 3 is started to make the impeller 7 rotate. The rotation of the impeller 7 makes the liquid enter the connecting pipe 6, the water passage chamber and the water outlet pipe 5 from the lifting housing 103 in sequence, so as to realize the pumping of the liquid.

[0032] The liquid level sensor can be used to detect the liquid level in real time, and the temperature sensor can be used to detect the liquid temperature in real time. Then, based on the real-time detected liquid level and liquid temperature, the height of the lifting housing 103 can be adjusted in real time using the lifting drive component 4. This ensures that the height difference between the inlet of the lifting housing 103 and the liquid level is always kept within a suitable range, thereby ensuring that the actual pressure at the pump inlet is always within a reasonable range. This helps to resist the high saturated vapor pressure of the high-temperature medium and ensures the pump's anti-cavitation capability from the source.

[0033] In a further preferred embodiment, the rotary drive assembly 3 includes a transmission cylinder 301 and a motor 302. The transmission cylinder 301 is located at the top of the fixed housing 101 and is rotatably connected to the fixed housing 101. For example, the transmission cylinder 301 is rotatably connected to a bearing fixed to the fixed housing 101. The fixed housing 101, the transmission cylinder 301, and the drive shaft 2 are coaxially arranged. A transmission gear 303 is fixedly connected to the outer wall of the transmission cylinder 301. The transmission gear 303 meshes with a drive gear 304, and the drive gear 304 is fixedly connected to the output shaft of the motor 302. An internal spline is provided on the inner wall of the transmission cylinder 301. The internal spline is structurally adapted to the external spline 305 located on the outer wall of the drive shaft 2, and the external spline 305 can slide vertically along the internal spline.

[0034] In operation, motor 302 drives drive gear 304 to rotate, which in turn drives transmission gear 303 to rotate, causing transmission cylinder 301 to rotate relative to fixed housing 101. After transmission cylinder 301 rotates, the engagement of internal and external splines 305 causes drive shaft 2 to rotate. The rotation of drive shaft 2 drives impeller 7 to rotate, thereby achieving liquid pumping. Since external spline 305 can slide vertically along internal spline, the lifting drive assembly 4, which synchronizes the lifting of drive shaft 2 and lifting housing 103, does not affect the power transmission from motor 302 to drive shaft 2, and the condensate pump can still perform normal liquid pumping.

[0035] In a further preferred embodiment, the lifting drive assembly 4 includes a support frame 401. A first hydraulic cylinder 402 is fixedly connected to the top plate of the support frame 401. The bottom end of the telescopic rod of the first hydraulic cylinder 402 passes through the top plate and connects to the lifting plate 403. The middle part of the bottom surface of the lifting plate 403 is detachably connected to a connecting piece 404. The bottom end of the connecting piece 404 is rotatably connected to a convex ring 405 and can drive the convex ring 405 to move synchronously. The convex ring 405 is fixedly connected to the side wall of the drive shaft 2. At least two transmission rods 406 are fixedly connected to the lifting plate 403. The bottom end of the transmission rod 406 is fixedly connected to a first horizontal protrusion 13 at the bottom end of the side wall of the telescopic housing 102.

[0036] like Figure 4 As shown, the connector 404 can be a cylindrical part with a perforated bottom. The sidewall of the cylinder can be appropriately hollowed out to reduce the lifting load of the first hydraulic cylinder 402. The upper surface of the bottom plate of the cylinder contacts the lower surface of the convex ring 405. The first hydraulic cylinder 402 can be connected to the oil tank through an oil supply system. When the telescopic rod of the first hydraulic cylinder 402 drives the lifting plate 403 to descend, the oil supply system supplies oil from the oil tank to the rodless chamber of the first hydraulic cylinder 402, and recovers the oil in the rod chamber of the first hydraulic cylinder 402 back to the oil tank. When the telescopic rod of the first hydraulic cylinder 402 drives the lifting plate 403 to rise, the oil supply system supplies oil from the oil tank to the rod chamber of the first hydraulic cylinder 402, and recovers the oil in the rodless chamber of the first hydraulic cylinder 402 back to the oil tank. Figure 1 As shown, the first horizontal protrusion 13 may be a sealing flange for connecting the lifting housing 103 and the telescopic housing 102.

[0037] In use, the first hydraulic cylinder 402 drives the lifting plate 403 to rise and fall. The connecting piece 404 and the transmission rod 406 on the lifting plate 403 rise and fall synchronously. The connecting piece 404 drives the drive shaft 2 to rise and fall, and the transmission rod 406 drives the telescopic housing 102 to extend and retract, thereby realizing the synchronous rise and fall of the drive shaft 2 and the lifting housing 103.

[0038] In a further preferred embodiment, the top end of the transmission rod 406 passes through the top plate and connects to the support assembly 8.

[0039] In use, the first hydraulic cylinder 402 and the support assembly 8 work together to support the drive shaft 2 and the lifting housing 103. The support assembly 8 can reduce the load on the first hydraulic cylinder 402 and prevent the first hydraulic cylinder 402 from reducing its service life due to excessive wear.

[0040] In a further optimized design, the support assembly 8 includes a connecting ring 81 and a second hydraulic cylinder 82. The bottom surface of the connecting ring 81 is fixedly connected to the top end of the transmission rod 406. A polygonal connecting rod 83 is fixedly connected to the inner wall of the connecting ring 81, and the polygonal connecting rod 83 surrounds the first hydraulic cylinder 402. The second hydraulic cylinder 82 is fixedly connected to the top plate of the support frame 401, and the top end of the telescopic part of the second hydraulic cylinder 82 is fixedly connected to the arc-shaped plate 84. The top surface of the arc-shaped plate 84 is simultaneously positioned opposite to the bottom surface of both the connecting ring 81 and the bottom surface of the polygonal connecting rod 83. The central angle of the arc-shaped plate 84 is less than 180° to prevent deformation of the end furthest from the second hydraulic cylinder 82 due to its own weight after prolonged use.

[0041] In use, the first hydraulic cylinder 402 and the second hydraulic cylinder 82 can be started synchronously, or the first hydraulic cylinder 402 can be used to adjust the height of the drive shaft 2 and the lifting housing 103 before starting the second hydraulic cylinder 82. When started simultaneously, the support component 8 only serves a supporting function and can also provide lifting power for adjusting the height of the drive shaft 2 and the lifting housing 103. When not started simultaneously, the support component 8 only serves a supporting function. The combined design of the arc plate 84, the polygonal connecting rod 83, and the connecting ring 81 allows the polygonal connecting rod 83 and the connecting ring 81 to achieve a large contact area with the arc plate 84 with a small weight, achieving more stable support of the arc plate 84 for the connecting ring 81, and improving the stability of the transmission rod 406, the lifting plate 403, the drive shaft 2, and the lifting housing 103.

[0042] In a further preferred embodiment, both the rotary drive assembly 3 and the lifting drive assembly 4 are fixedly connected to the mounting base 9. The mounting base 9 is fixedly connected to the side wall of the fixed housing 101. A guide cylinder 11 is fixedly connected between the bottom surface of the mounting base 9 and the second horizontal protrusion 10 at the top of the side wall of the telescopic housing 102. The transmission rod 406 passes through the guide cylinder 11 and is slidably connected to the guide cylinder 11.

[0043] like Figure 1 As shown, the second horizontal protrusion 10 can be a sealing flange for connecting the telescopic housing 102 and the fixed housing 101. In use, the rotary drive assembly 3, the lifting drive assembly 4, and the housing 1 are all integrated on the mounting base 9, which increases the overall integrity of the condensate pump. The guide cylinder 11 can guide the transmission rod 406, thereby increasing the stability when the drive shaft 2 and the lifting housing 103 are synchronously lifted and lowered. At the same time, the guide cylinder 11 can also improve the bending resistance of the transmission rod 406 and the fixed housing 101.

[0044] In a further optimized design, the water outlet pipe 5 passes through the mounting base 9, and a mounting ring is fixedly connected to the outer wall of the water outlet pipe 5. The mounting ring is detachably connected to the bottom surface of the mounting base 9.

[0045] In use, the mounting ring increases the stability of the water outlet pipe 5. The detachable connection between the mounting ring and the mounting base 9, together with the detachable connection between the water outlet pipe 5 and the fixed housing 101, makes it convenient to inspect and replace the water outlet pipe 5.

[0046] Further optimization of the design: the telescopic housing 102 is a metal bellows.

[0047] When in use, metal corrugated pipes have the advantages of long service life and good sealing performance, while also possessing expansion and contraction characteristics.

[0048] In a further optimized design, a water inlet is provided at the bottom of the pump chamber, and the water inlet is connected to the filter element 12.

[0049] When in use, the filter element 12 can filter impurities in the liquid, preventing impurities from clogging and damaging the hydrophobic pump.

[0050] In a further preferred embodiment, the filter element 12 includes a connector 121 and a filter ball 122. The top end of the connector 121 is detachably connected to the water inlet, and the bottom end of the connector 121 is fixedly connected to the filter ball 122. The diameter of the filter ball 122 is larger than the diameter of the water inlet. The surface of the filter ball 122 is provided with uniformly distributed filter holes, and the inner cavity of the filter ball 122 is connected to the water inlet through a water passage in the connector 121.

[0051] In use, the detachable connection between the connector 121 and the water inlet allows for easy replacement of the filter element 12. The filter ball 122 can increase the filtration area of ​​the filter element 12, thereby reducing the frequency of filter element 12 replacement.

[0052] Therefore, the present invention provides a high-temperature medium condensate pump with the above-described structure, which facilitates adjustment of the pump inlet height and effectively reduces the probability of cavitation.

[0053] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0054] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A high-temperature medium condensate pump, characterized in that: The device includes a housing (1), a drive shaft (2) rotatably connected within the housing (1), a rotary drive assembly (3), and a lifting drive assembly (4). The housing (1) includes a fixed housing (101), a telescopic housing (102), and a lifting housing (103) that are sealed and connected from top to bottom. The lifting housing (103) has a connecting cavity and a pump cavity arranged vertically. The connecting cavity, the interior of the telescopic housing (102), and the interior of the fixed housing (101) are connected to form a water passage cavity. The top outlet of the water passage cavity is connected to a water outlet pipe (5). The outlet of the pump cavity is connected to the connecting cavity through a connecting pipe (6). An impeller (7) is rotatably connected within the pump cavity. The impeller (7) is fixedly connected to the drive shaft (2). The rotary drive assembly (3) is used to drive the drive shaft (2) to rotate. The lifting drive assembly (4) is used to drive the drive shaft (2) and the lifting housing (103) to lift synchronously. The rotary drive assembly (3) includes a transmission cylinder (301) and a motor (302). The transmission cylinder (301) is located at the top of the fixed housing (101) and is rotatably connected to the fixed housing (101). The fixed housing (101), the transmission cylinder (301), and the drive shaft (2) are coaxially arranged. A transmission gear (303) is fixedly connected to the outer wall of the transmission cylinder (301). The transmission gear (303) meshes with the drive gear (304). The drive gear (304) is fixedly connected to the output shaft of the motor (302). An internal spline is provided on the inner wall of the transmission cylinder (301). The internal spline is adapted to the structure of the external spline (305) located on the outer wall of the drive shaft (2). The external spline (305) can slide along the internal spline in the vertical direction. The lifting drive assembly (4) includes a support frame (401). A first hydraulic cylinder (402) is fixedly connected to the top plate of the support frame (401). The bottom end of the telescopic rod of the first hydraulic cylinder (402) passes through the top plate and is connected to the lifting plate (403). The middle part of the bottom surface of the lifting plate (403) is detachably connected to the connecting piece (404). The bottom end of the connecting piece (404) is rotatably connected to the convex ring (405) and can drive the convex ring (405) to lift synchronously. The convex ring (405) is fixedly connected to the side wall of the drive shaft (2). At least two transmission rods (406) are fixedly connected to the lifting plate (403). The bottom end of the transmission rod (406) is fixedly connected to the first horizontal protrusion (13) at the bottom end of the side wall of the telescopic housing (102). The rotary drive assembly (3) and the lifting drive assembly (4) are both fixedly connected to the mounting base (9). The mounting base (9) is fixedly connected to the side wall of the fixed housing (101). A guide cylinder (11) is fixedly connected between the bottom surface of the mounting base (9) and the second horizontal protrusion (10) at the top of the side wall of the telescopic housing (102). The transmission rod (406) passes through the guide cylinder (11) and is slidably connected to the guide cylinder (11).

2. The high-temperature medium condensate pump according to claim 1, characterized in that: The top end of the transmission rod (406) passes through the top plate and is connected to the support assembly (8).

3. The high-temperature medium condensate pump according to claim 2, characterized in that: The support assembly (8) includes a connecting ring (81) and a second hydraulic cylinder (82). The bottom surface of the connecting ring (81) is fixedly connected to the top end of the transmission rod (406). A polygonal connecting rod (83) is fixedly connected to the inner wall of the connecting ring (81). The polygonal connecting rod (83) surrounds the first hydraulic cylinder (402). The second hydraulic cylinder (82) is fixedly connected to the top plate. The top end of the telescopic part of the second hydraulic cylinder (82) is fixedly connected to an arc plate (84). The top surface of the arc plate (84) is simultaneously opposite to the bottom surface of the connecting ring (81) and the bottom surface of the polygonal connecting rod (83).

4. The high-temperature medium condensate pump according to claim 1, characterized in that: The water outlet pipe (5) passes through the mounting base (9), and a mounting ring is fixedly connected to the outer wall of the water outlet pipe (5). The mounting ring is detachably connected to the bottom surface of the mounting base (9).

5. The high-temperature medium condensate pump according to claim 1, characterized in that: The telescopic housing (102) is a metal bellows.

6. The high-temperature medium condensate pump according to claim 1, characterized in that: The bottom end of the pump chamber is provided with a water inlet, which is connected to the filter element (12).

7. The high-temperature medium condensate pump according to claim 6, characterized in that: The filter element (12) includes a connector (121) and a filter ball (122). The top end of the connector (121) is detachably connected to the water inlet, and the bottom end of the connector (121) is fixedly connected to the filter ball (122). The diameter of the filter ball (122) is larger than the diameter of the water inlet. The surface of the filter ball (122) is provided with uniformly distributed filter holes. The inner cavity of the filter ball (122) is connected to the water inlet through the water passage in the connector (121).

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