Environment-friendly Kaplan turbine

Abstract

The utility model relates to an environment-friendly Kaplan turbine. The environment-friendly Kaplan turbine comprises a runner cone, a Kaplan runner structure, a main shaft, a push-pull rod, a servomotor structure and an oil head. The servomotor structure is arranged between the oil head and the push-pull rod, the servomotor structure is externally arranged, the operating frame and the operating mechanism are matched with each other, and operating force used for adjusting the angle of the rotating wheel blade in the rotating wheel body can be optimized into mechanical transmission from traditional hydraulic transmission. The environment-friendly Kaplan turbine realizes an oil-free state in the runner hub and the runner cone, namely oil-free work in the runner hub and the runner cone can be realized, namely oil leakage is avoided if no oil exists, the problem of environmental pollution to a river caused by oil leakage of the runner hub is completely eradicated, and meanwhile, the environment-friendly Kaplan turbine also has the advantages of simple structure, low cost and the like. And the rotating wheel adjusting operation is reliable, durable and safe.

Description

Technical Field

[0001] The utility model relates to the technical field of a propeller-type water turbine, and in particular to an environmentally friendly propeller-type water turbine. Background Art

[0002] The runner of a propeller turbine is set in the flow channel. As the unit runs for a long time, the wear of components, aging of seals, and sudden accidents will increase the risk of oil leakage. The traditional propeller turbine structure needs to be filled with oil in the runner to lubricate the bearings of components such as the blade pivot and the connecting rod mechanism. The oil is used to balance the pressure in the runner cavity to prevent water from entering the runner. At the same time, the effect of rust prevention and lubrication of metal parts and seals can be obtained. However, when the blade seal fails and the drain cone bolt breaks, a large amount of oil will leak into the river, causing environmental pollution and causing social problems. In addition, if the inside of the runner is immersed in river water, the lubrication function of the oil will be reduced, causing damage to the runner components. Therefore, it is of great significance to carry out research on environmentally friendly propeller turbine technology to solve the problem of oil leakage in the turbine runner from the source. Utility Model Content

[0003] Based on this, it is necessary to provide an environmentally friendly propeller-type water turbine that can achieve reliable, durable and safe adjustment operation of the blades while meeting the requirement of oil-free assembly of the runner.

[0004] An environmentally friendly propeller-type water turbine, comprising

[0005] Drain cone;

[0006] A paddle-type impeller structure comprises a impeller body with a hollow structure, a plurality of impeller blades, a plurality of operating mechanisms and an operating frame; one end of the impeller body is connected to the large end of the water discharge cone; a plurality of mounting holes are provided at intervals along the circumferential direction on the side wall of the impeller body; the mounting parts of the plurality of impeller blades are respectively and sealedly penetrated through the plurality of mounting holes in a one-to-one correspondence; the plurality of operating mechanisms are accommodated in the impeller body and are respectively and one-to-one connected to the mounting parts of the plurality of impeller blades; the operating frame is arranged inside the impeller body away from one end of the water discharge cone and is linked with each of the operating mechanisms;

[0007] The main shaft is a hollow rod-shaped structure; one end of the main shaft is sealed and connected to the end of the runner body away from the drain cone;

[0008] A push-pull rod is slidably disposed in the main shaft; one end of the push-pull rod is transmission-connected to the operating frame;

[0009] The servomotor structure comprises a cylinder body, a cylinder cover, a servomotor piston and a piston rod; the two ends of the cylinder body are respectively connected to the cylinder cover and the end of the main shaft away from the rotating wheel body; the servomotor piston is slidably installed in the cylinder body; one end of the piston rod is connected to the servomotor piston, and the other end is transmission-connected to the end of the push-pull rod away from the operating mechanism;

[0010] An oil receiver is installed at one end of the cylinder head away from the cylinder body;

[0011] Wherein, the operating frame is constructed to be able to move forward and backward along the axial direction of the main shaft under the drive of the push-pull rod, so as to drive the multiple operating mechanisms to drive the corresponding runner blades to rotate around the central axis of the mounting hole.

[0012] In one of the embodiments, the mounting portion of the runner blade is rotatably inserted into the corresponding mounting hole through a first self-lubricating sleeve.

[0013] In one of the embodiments, a pressure test chamber is formed on the rotor body; the pressure test chamber is connected to the connection between the mounting portion of the rotor blade and the rotor body.

[0014] In one of the embodiments, a supporting protrusion is formed on the inner wall of the impeller body near one end of the drain cone; the paddle impeller structure also includes a plurality of pivots corresponding to the plurality of impeller blades respectively; one end of the pivot is connected to the impeller blades, and the other end is rotatably mounted on the supporting protrusion.

[0015] In one of the embodiments, the paddle wheel structure further includes a guide rod; the support protrusion is provided with a sliding hole in the same direction as the main axis; one end of the guide rod is connected to the operating frame, and the other end can be slidably inserted into the sliding hole.

[0016] In one embodiment, the sliding hole is a through hole connecting the inner cavity of the impeller body and the drain cone; the environmentally friendly propeller turbine also includes a sealing plug cover; one end of the sealing plug cover is passed through and sealed at the opening of the sliding hole located at one end of the drain cone.

[0017] In one embodiment, the operating mechanism includes a turntable and a linkage rod; a connecting hole is opened on the turntable; the pivot is passed through the connecting hole and is transmission-connected to the turntable; the turntable has an eccentric portion radially eccentrically arranged relative to the connecting hole; and the two ends of the linkage rod are rotationally connected to the corresponding eccentric portion and the operating frame respectively.

[0018] In one of the embodiments, the linkage rod is rotatably connected to the eccentric portion via a pin.

[0019] In one of the embodiments, a second self-lubricating sleeve is further provided between the pin shaft and the linkage rod.

[0020] In one embodiment, both ends of the push-pull rod are respectively connected to the operating frame and the piston rod through a coupling.

[0021] The above-mentioned environmentally friendly propeller-type water turbine sets the relay structure between the oil receiver and the push-pull rod to realize the external placement of the relay structure. Compared with the traditional water turbine that sets the relay structure inside the runner body and the drain cone, the above-mentioned environmentally friendly propeller-type water turbine realizes an oil-free state in the runner body and the drain cone. The operating frame and the operating mechanism cooperate with each other, which can optimize the operating force used to adjust the angle of the runner blades in the runner body from traditional hydraulic transmission to mechanical transmission, further realizing an oil-free state in the runner body, so that the inside of the runner body can realize the original function under oil-free conditions. Moreover, the relay structure is externalized, and the oil receiver and the relay structure cooperate to form a rotating oil cylinder structure, eliminating the structure in which high-pressure oil enters the runner body, simplifying the structure of the environmentally friendly propeller-type water turbine. Therefore, the above-mentioned environmentally friendly propeller turbine can achieve oil-free operation in the impeller body and the discharge cone, that is, there will be no oil leakage without oil, and the problem of environmental pollution to the river caused by oil leakage from the impeller body is completely eliminated. At the same time, it also has the advantages of simple structure and more reliable, durable and safe impeller adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of an environmentally friendly propeller-type water turbine in a preferred embodiment of the utility model;

[0023] Figure 2 for Figure 1 The schematic diagram of the structure of the runner body in the environmentally friendly propeller-type water turbine shown;

[0024] Figure 3 for Figure 1 A partial enlarged view of the connection between the runner blades and the runner body in the environmentally friendly propeller turbine shown;

[0025] Figure 4 for Figure 1 A partial enlarged view of the connection between the linkage rod and the operating frame in the environmentally friendly propeller turbine shown.

[0026] Explanation of reference numerals: 100, environmentally friendly propeller turbine; 110, discharge cone; 120, propeller runner structure; 121, runner body; 1211, mounting hole; 1212, pressure test chamber; 1213, support protrusion; 1214, sliding hole; 122, runner blade; 123, operating mechanism; 1231, turntable; 1232, linkage rod; 1233, pin shaft; 1234, second self-lubricating bushing; 124, operating frame; 125. First self-lubricating bushing; 126. Test chamber sealing cover; 127. Annular seal; 128. Sealing pressure plate; 129. Sealing ring; 1201. Pivot; 1202. Guide rod; 1203. Sealing plug cover; 130. Main shaft; 140. Push-pull rod; 150. Relay structure; 151. Cylinder body; 152. Cylinder head; 153. Relay piston; 154. Piston rod; 160. Oil receiver; 170. Coupling. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intermediate element. It is also understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or there can be one or more intermediate elements.

[0030] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0031] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0032] Figure 1 The structure of an environmentally friendly propeller-type water turbine in one embodiment of the utility model is shown. For the convenience of description, the accompanying drawings only show structures related to the utility model.

[0033] See also Figure 1 In a preferred embodiment of the utility model, the environment-friendly impeller-type water turbine 100 includes a discharge cone 110 , an impeller-type runner structure 120 , a main shaft 130 , a push-pull rod 140 , a relay structure 150 and an oil receiver 160 .

[0034] The paddle wheel structure 120 includes a wheel body 121 with a hollow structure, a plurality of wheel blades 122, a plurality of operating mechanisms 123 and an operating frame 124. One end of the wheel body 121 is connected to the large end of the water discharge cone 110. The large end of the water discharge cone 110 refers to the end of the water discharge cone 110 with a larger diameter. Similarly, the small end of the water discharge cone 110 refers to the end of the water discharge cone 110 with a smaller diameter, that is, the end of the water discharge cone 110 away from the wheel body 121.

[0035] It should be noted that the multiple here refers to a number of 2 or more.

[0036] Please also read Figure 2 The side wall of the runner body 121 is provided with a plurality of mounting holes 1211 spaced apart along the circumferential direction. The mounting parts of the plurality of runner blades 122 are respectively and one-to-one penetrated through the plurality of mounting holes 1211. The plurality of operating mechanisms 123 are accommodated in the runner body 121 and are respectively and one-to-one connected with the mounting parts of the plurality of runner blades 122. The operating frame 124 is provided inside the end of the runner body 121 away from the drain cone 110 and is linked with each operating mechanism 123.

[0037] The main shaft 130 is a hollow rod-shaped structure. One end of the main shaft 130 is sealedly connected to one end of the runner body 121 away from the drain cone 110 .

[0038] The push-pull rod 140 is slidably disposed in the main shaft 130 . One end of the push-pull rod 140 is transmission-connected to the operating frame 124 .

[0039] The servomotor structure 150 includes a cylinder body 151, a cylinder head 152, a servomotor piston 153 and a piston rod 154. The two ends of the cylinder body 151 are respectively connected to the cylinder head 152 and the end of the main shaft 130 away from the wheel body 121. The servomotor piston 153 is slidably installed in the cylinder body 151. One end of the piston rod 154 is connected to the servomotor piston 153, and the other end is drivingly connected to the end of the push-pull rod 140 away from the operating mechanism 123.

[0040] The oil receiver 160 is mounted on one end of the cylinder head 152 away from the cylinder body 151 .

[0041] The operating frame 124 is configured to be able to move forward and backward along the axial direction of the main shaft 130 under the drive of the push-pull rod 140 , so as to drive the multiple operating mechanisms 123 to drive the corresponding runner blades to rotate around the central axis of the mounting hole 1211 .

[0042] In this way, in actual application, the oil receiver 160 directly provides high-pressure oil to the cylinder body 151 to push the relay piston 153 to slide in the cylinder body 151, so that the relay structure 150 starts to operate, thereby driving the push-pull rod 140 to slide in the main shaft 130, and the operating frame 124 drives the wheel structure to rotate in the mounting hole 1211 through the operating mechanism 123 under the push or pull of the push-pull rod 140, thereby realizing the adjustment of the angle of the wheel blade 122.

[0043] The above-mentioned environmentally friendly propeller turbine 100 sets the servomotor structure 150 between the oil receiver 160 and the push-pull rod 140, so as to realize the external placement of the servomotor structure 150. Compared with the traditional turbine structure in which the servomotor structure 150 is set inside the runner body 121 and the water discharge cone 110, the above-mentioned environmentally friendly propeller turbine 100 realizes the oil-free state in the runner body 121 and the water discharge cone 110. The operating frame 124 and the operating mechanism 123 cooperate with each other, so that the operating force for adjusting the angle of the runner blades 122 in the runner body 121 can be optimized from the traditional hydraulic transmission to the mechanical transmission, and the oil-free state in the runner body 121 can be further realized, so that the inside of the runner body 121 can realize the original function without oil. Moreover, the servomotor structure 150 is placed externally, and the oil receiver 160 cooperates with the servomotor structure 150 to form a rotating oil cylinder structure, thereby eliminating the structure in which high-pressure oil enters the runner body 121, and simplifying the structure of the environmentally friendly propeller-type water turbine 100. Therefore, the environmentally friendly propeller-type water turbine 100 can achieve oil-free operation in the runner body 121 and the water discharge cone 110, that is, there will be no oil leakage without oil, and the problem of environmental pollution to the river caused by oil leakage from the runner body 121 is completely eliminated. At the same time, it also has the advantages of simple structure, and the runner adjustment operation is relatively reliable, durable and safe.

[0044] Please also read Figure 3 In some embodiments, the mounting portion of the runner blade 122 is rotatably inserted into the corresponding mounting hole 1211 through the first self-lubricating sleeve 125. Specifically, after the first self-lubricating sleeve 125 is sleeved on the mounting portion of the runner blade 122, it is inserted into the mounting hole 1211 together. Specifically, the first self-lubricating sleeve 125 is an embedded graphite-based self-lubricating sleeve. The provision of the first self-lubricating sleeve 125 enables the connection between the runner blade 122 and the runner body 121 to continuously, stably and reliably perform the adjustment operation of the runner blade 122 when there is no oil in the runner body 121.

[0045] In some embodiments, a pressure test chamber 1212 is formed on the rotor body 121. The pressure test chamber 1212 is connected to the connection between the mounting portion of the rotor blade 122 and the rotor body 121. Specifically, the paddle wheel structure 120 further includes a test chamber sealing cover 126, which is detachably mounted on an opening of the pressure test chamber 1212 on the outer wall of the rotor body 121 to seal and cover the opening of the pressure test chamber 1212 on the outer wall of the rotor body 121.

[0046] When assembling the paddle wheel structure 120, a water pressure test is performed on the pressure test chamber 1212 to check the sealing performance between the wheel blades 122 and the inner wall of the mounting hole 1211, thereby ensuring the reliability of the seal between the wheel blades 122 and the wheel body 121 and ensuring that the water flow in the flow channel will not leak into the wheel body 121 when the power station is running. This can improve the operating environment of the operating parts in the wheel body 121 and extend its service life.

[0047] In order to achieve sealing between the runner blade 122 and the inner wall of the mounting hole 1211, in one embodiment, an annular seal 127 is provided between the mounting portion of the runner blade 122 and the inner wall of the mounting hole 1211. In order to ensure the sealing effect of the annular seal 127 and the ease of assembly, a sealing pressure plate 128 is also sleeved on the mounting portion of the runner blade 122, and the sealing pressure plate 128 is clamped between the annular seal 127 and the blade of the runner blade 122.

[0048] In order to further improve the sealing effect between the runner blade 122 and the runner body 121, specifically, when the first moistening sleeve is sleeved on the mounting portion of the runner blade 122, a sealing ring 129 is also provided between the end surface of the first moistening sleeve and the mounting portion of the runner blade 122. In order to ensure the effect of the pressure test, the opening of the pressure test chamber 1212 close to one end of the mounting portion of the runner blade 122 is located between the annular seal 127 and the sealing ring 129.

[0049] Please refer again Figure 1 and Figure 2 In some embodiments, a support protrusion 1213 is formed on the inner wall of the impeller body 121 near one end of the drain cone 110. The paddle impeller structure further includes a plurality of pivots 1201 corresponding to the plurality of impeller blades. One end of the pivot 1201 is connected to the impeller blades, and the other end is rotatably mounted on the support protrusion 1213.

[0050] When the runner blade 122 is installed on the supporting protrusion 1213 through the pivot 1201, not only the connection stability between the runner blade 122 and the runner body 121 is guaranteed, but also the operation stability of the runner blade 122 is higher when the power station unit is running, which is beneficial to extending the service life of the runner blade 122.

[0051] Further, in some embodiments, the paddle wheel structure 120 further includes a guide rod 1202. The support protrusion 1213 is provided with a slide hole 1214 in the same direction as the main shaft 130. One end of the guide rod 1202 is connected to the operating frame 124, and the other end is slidably inserted into the slide hole 1214. Specifically, the main shaft 130 and the slide hole 1214 are coaxially arranged. Of course, in other embodiments, the central axis of the main shaft 130 and the central axis of the slide hole 1214 are parallel to each other and do not overlap.

[0052] The operating mechanism 123 and the operating frame 124 are arranged on one side of the rotating wheel body 121 close to the main shaft 130, which can effectively shorten the length of the push-pull rod 140. At the same time, the guide rod 1202 is arranged to improve the stability of the long-term operation of the push-pull rod 140.

[0053] Further, in some embodiments, the sliding hole 1214 is a through hole connecting the inner cavity of the runner body 121 and the water discharge cone 110. The environmentally friendly propeller turbine 100 also includes a sealing plug cover 1203. One end of the sealing plug cover 1203 is penetrated and sealed to the opening of the sliding hole 1214 at one end of the water discharge cone 110.

[0054] By setting the slide hole 1214 as a through hole, the staff can directly process the slide hole 1214 on the outside of the impeller body 121, reducing the difficulty of processing the impeller body 121. At the same time, the setting of the sealing plug cover 1203 can reduce the probability of water in the flow channel entering the impeller body 121 through the drain cone 110, further improving the operating environment of the operating parts in the impeller body 121 and further extending the service life.

[0055] Further, in some embodiments, the operating mechanism 123 includes a rotating disk 1231 and a linkage rod 1232. A connecting hole is provided on the rotating disk 1231. The pivot 1201 is passed through the connecting hole (not shown) and is in transmission connection with the rotating disk 1231. The rotating disk 1231 has an eccentric portion (not shown) which is radially eccentrically arranged relative to the connecting hole. The two ends of the linkage rod 1232 are respectively connected to the corresponding eccentric portion and the operating frame 124 for rotation.

[0056] In actual application, when the water head and load change, a force consistent with the axial direction of the main shaft 130 can be applied to the push-pull rod 140 through the oil receiver 160 and the relay structure 150, so that the operating frame 124 moves back and forth along the axial direction of the main shaft 130 in the impeller body 121. At this time, each linkage rod 1232 will pull or push the eccentric part to move to drive the turntable 1231 to rotate forward or reverse around the central axis of the corresponding mounting hole 1211, and each impeller blade 122 will also rotate with the corresponding turntable 1231 to realize the automatic rotation of the impeller blade 122.

[0057] Please also read Figure 4Furthermore, in some embodiments, the linkage rod 1232 is rotatably connected to the eccentric part through a pin 1233. Specifically, the linkage rod 1232 and the eccentric part are connected by an internal plug-in pin 1233. In this way, the length of the linkage rod 1232 can be shortened, which is conducive to the simplification and arrangement of the operating mechanism 123 in the wheel body 121.

[0058] Furthermore, in some embodiments, a second self-lubricating sleeve 1234 is further provided between the pin 1233 and the linkage rod 1232. Here, the linkage rod 1232 and the eccentric portion are both provided with a through hole or a screw hole, and the pin 1233 cooperates with the through hole or the screw hole to achieve a rotation connection.

[0059] Specifically, the second self-lubricating sleeve 1234 is sleeved on the linkage rod 1232 and then inserted into the through hole or screw hole. Specifically, the second self-lubricating sleeve 1234 is an embedded graphite-based self-lubricating sleeve. The second self-lubricating sleeve 1234 enables the operating mechanism 123 to operate safely and reliably without any conditions.

[0060] Please refer again Figure 1 In some embodiments, both ends of the push-pull rod 140 are respectively connected to the operating frame 124 and the piston rod 154 through a coupling 170. The coupling 170 can be used as a mounting device to prevent the push-pull rod 140 and the operating frame 124 from being subjected to excessive loads while realizing force transmission, thereby playing a role of overload protection and improving the safety of the environmentally friendly propeller turbine 100.

[0061] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An environmentally friendly propeller turbine, characterized in that: include Drain cone; A paddle-type impeller structure comprises a impeller body with a hollow structure, a plurality of impeller blades, a plurality of operating mechanisms and an operating frame; one end of the impeller body is connected to the large end of the water discharge cone; a plurality of mounting holes are provided at intervals along the circumferential direction on the side wall of the impeller body; the mounting parts of the plurality of impeller blades are respectively and sealedly penetrated through the plurality of mounting holes in a one-to-one correspondence; the plurality of operating mechanisms are accommodated in the impeller body and are respectively connected to the mounting parts of the plurality of impeller blades in a one-to-one correspondence; the operating frame is arranged inside the impeller body at one end away from the water discharge cone and is linked to each of the operating mechanisms; The main shaft is a hollow rod-shaped structure; one end of the main shaft is sealed and connected to the end of the runner body away from the drain cone; A push-pull rod is slidably disposed in the main shaft; one end of the push-pull rod is transmission-connected to the operating frame; The servomotor structure comprises a cylinder body, a cylinder cover, a servomotor piston and a piston rod; the two ends of the cylinder body are respectively connected to the cylinder cover and the end of the main shaft away from the rotating wheel body; the servomotor piston is slidably installed in the cylinder body; one end of the piston rod is connected to the servomotor piston, and the other end is transmission-connected to the end of the push-pull rod away from the operating mechanism; An oil receiver is installed at one end of the cylinder head away from the cylinder body; Wherein, the operating frame is constructed to be able to move forward and backward along the axial direction of the main shaft under the drive of the push-pull rod, so as to drive the multiple operating mechanisms to drive the corresponding runner blades to rotate around the central axis of the mounting hole.

2. The environmentally friendly propeller turbine according to claim 1, characterized in that: The mounting portion of the runner blade is rotatably inserted into the corresponding mounting hole through a first self-lubricating sleeve.

3. The environmentally friendly propeller turbine according to claim 1, characterized in that: A pressure test cavity is formed on the rotor body; the pressure test cavity is communicated with the connection between the mounting portion of the rotor blade and the rotor body.

4. The environmentally friendly propeller turbine according to claim 1, characterized in that: A supporting protrusion is formed on the inner wall of the impeller body near one end of the drain cone; the paddle-type impeller structure also includes a plurality of pivots corresponding to the plurality of impeller blades respectively; one end of the pivot is connected to the impeller blades, and the other end is rotatably mounted on the supporting protrusion.

5. The environmentally friendly propeller turbine according to claim 4, characterized in that: The paddle wheel structure also includes a guide rod; the support protrusion is provided with a slide hole in the same direction as the main shaft; one end of the guide rod is connected to the operating frame, and the other end is slidably inserted into the slide hole.

6. The environmentally friendly propeller turbine according to claim 5, characterized in that: The sliding hole is a through hole connecting the inner cavity of the impeller body and the drain cone; the environmentally friendly propeller turbine also includes a sealing plug cover; one end of the sealing plug cover is penetrated and sealed at the opening of the sliding hole located at one end of the drain cone.

7. The environmentally friendly propeller turbine according to claim 4, characterized in that: The operating mechanism includes a turntable and a linkage rod; a connecting hole is opened on the turntable; the pivot is passed through the connecting hole and is transmission-connected to the turntable; the turntable has an eccentric portion radially eccentrically arranged relative to the connecting hole; the two ends of the linkage rod are rotationally connected to the corresponding eccentric portion and the operating frame respectively.

8. The environmentally friendly propeller turbine according to claim 7, characterized in that: The linkage rod is rotatably connected to the eccentric part through a pin shaft.

9. The environmentally friendly propeller turbine according to claim 8, characterized in that: A second self-lubricating sleeve is also arranged between the pin shaft and the linkage rod.

10. The environmentally friendly propeller turbine according to claim 1, characterized in that: Both ends of the push-pull rod are respectively connected to the operating frame and the piston rod through couplings.

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