Water pumping device with protective structure

Abstract

The invention belongs to the technical field of water pumping devices, and particularly discloses a water pumping device with a protective structure, which comprises a drainage elbow and a water pumping vertical pipe fixed at the lower end of the drainage elbow, a water collecting cover is fixed at the lower end of the water pumping vertical pipe, a water inlet pipe is fixed at the lower end of the water collecting cover, a paddle is rotatably arranged in the water collecting cover, and a transmission rod is fixedly inserted on the paddle. A transmission motor is connected to the upper end of the transmission rod and fixed to the drainage elbow. According to the water pumping device, when a water pumping vertical pipe drives water liquid in a water collecting cover to be discharged through a water discharging bent pipe, the water liquid can penetrate through a sliding net plate to enter a water inlet pipe, in the process, the sliding net plate can filter the water liquid, and due to the fact that the sliding net plate can slide on the water inlet pipe, the water liquid can be filtered; when the sliding net plate slides in the second inserting cavity and the first inserting cavity, sundries penetrating through the sliding net plate can be impacted by water liquid, so that the water liquid can drive the sundries on the sliding net plate to be separated, and the sundries in the water liquid are prevented from making contact with the paddles.

Description

Technical Field

[0001] This invention belongs to the technical field of water pumping devices, and specifically discloses a water pumping device with a protective structure. Background Technology

[0002] A vertical axial flow pump is a common water pumping device. An axial flow pump can drive water to move along the axial direction. Currently, the most common vertical axial flow pumps on the market include an impeller, a motor, and a water pipe. In actual use, the output shaft of the motor can drive the impeller to rotate inside the water pipe, which can drive the water to move inside the water pipe, so that the water pipe can pump water. However, while vertical axial flow pumps do achieve good pumping results for water in actual use, they also have some shortcomings, such as: In order to achieve better pumping effect, the lower part of the pumping pipe of the vertical axial flow pump is usually an open funnel-shaped structure. This design can indeed quickly deliver water into the inside of the pumping pipe. However, the pumping pipe is not equipped with a good protective structure, which allows impurities in the water to come into direct contact with the impeller, which can easily cause damage to the impeller. To avoid the aforementioned issues, when using a vertical axial flow pump, operators typically attach a protective mesh to the outside of the pump. This mesh filters out impurities in the water, preventing them from contacting the impeller and extending its lifespan. However, the protective mesh used with vertical axial flow pumps often lacks a robust debris removal mechanism. When a significant amount of debris adheres to the mesh, it can clog the pores, reducing the pump's efficiency.

[0003] To address this issue, we propose a pumping device with a protective structure to solve the problem that vertical axial flow pumps do not have a good water protection structure. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a pumping device with a protective structure to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides a water pumping device with a protective structure, including a drain bend and a pumping vertical pipe fixed to the lower end of the drain bend. A water collection hood is fixed to the lower end of the pumping vertical pipe, and a water inlet pipe is fixed to the lower end of the water collection hood. A paddle rotates inside the water collection hood, and a transmission rod is inserted and fixed to the paddle. A transmission motor is connected to the upper end of the transmission rod, and the transmission motor is fixed to the drain bend. A toggle mechanism is connected to the lower end of the transmission rod. The water inlet pipe has a water inlet hole, a second insertion cavity and a first insertion cavity, and a sliding mesh plate that slides on the water inlet pipe. The sliding mesh plate is inserted into the second insertion cavity and the first insertion cavity. A dividing plate is fixed inside the second insertion cavity and the first insertion cavity. A supporting spring is fixed between one end of the sliding mesh plate and the dividing plate. A toggle tooth is fixed on the inner wall of the sliding mesh plate, and the toggle tooth abuts against the toggle structure.

[0006] The sliding mesh plate has a sliding groove, and a scraper is inserted into the sliding groove. The scraper is fixed on the side of the water inlet pipe near the second insertion cavity. A first one-way valve is connected to the scraper at equal intervals. A third one-way valve is connected to the end of the sliding mesh plate that is inserted into the second insertion cavity at equal intervals. A water inlet plate is fixed to the inner wall of the second insertion cavity, and a second one-way valve is fixed to the water inlet plate at equal intervals.

[0007] In the above technical solution, the lower wall of the inner cavity of the sliding groove is chamfered, one end of the sliding mesh plate abuts against the inner wall of the second insertion cavity, the scraper abuts against the inner wall of the sliding groove, the scraper is a flexible plate structure, and the water inlet plate does not contact the sliding mesh plate.

[0008] In the above technical solution, the actuating structure further includes a sleeve fixed on the transmission rod, a slide rod inserted inside the sleeve, a connecting spring fixed between the slide rod and the sleeve, the slide rod and the actuating tooth abutting, the end of the slide rod is provided with a rounded corner, and the end of the actuating tooth is also provided with a rounded corner.

[0009] In the above technical solution, the lower end of the water inlet pipe is fixed with a support block, the upper end of the water inlet pipe is fixed by a flange and a water collection cover, and the inner cavity of the water inlet pipe and the inner cavity of the water collection cover are connected.

[0010] In the above technical solution, the inner cavity of the drainage bend is connected to the inner cavity of the pumping riser, the drainage bend and the pumping riser are fixed together, and the inner cavity of the drainage bend is connected to the inner cavity of the water collection hood through the pumping riser.

[0011] In the above technical solution, a mounting column is further fixed on the drainage bend, the drive motor is fixed on the mounting column, and the transmission rod passes through the water inlet pipe, the water collection cover, the drainage bend and the mounting column and is fixed to the output shaft of the drive motor.

[0012] In the above technical solution, a support rod is further sleeved on the transmission rod, and the support rod is fixed inside the drainage bend and the pumping riser, and the transmission rod rotates on the support rod.

[0013] In the above technical solution, a sealing ring is further provided at the part of the transmission rod that passes through the mounting column, the fixed end of the transmission motor is fixed to the mounting column and the drainage bend, and the mounting column is a columnar structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The output shaft of the drive motor in this pumping device can drive the blades to rotate inside the water collection hood via the transmission rod. During this process, the blades can drive the air below the water collection hood to be transported into the drain bend. At this time, the inside of the water collection hood is under negative pressure. When the operator places the lower end of the water collection hood inside the water, the external atmospheric pressure can drive the water into the inside of the water collection hood, thereby realizing that the pumping vertical pipe drives the water inside the water collection hood to be discharged through the drain bend, thus realizing the pumping of water through this pumping device.

[0015] 2. In this pumping device, when the pumping vertical pipe drives the water inside the water collection hood to be discharged through the drain bend, the water can pass through the sliding screen plate and enter the interior of the inlet pipe. During this process, the sliding screen plate can filter the water. Since the sliding screen plate can slide on the inlet pipe, when the sliding screen plate slides inside the second insertion cavity and the first insertion cavity, the debris passing through the sliding screen plate can be impacted by the water. This can achieve the separation of debris on the sliding screen plate by the water, and prevent the debris in the water from contacting the blades.

[0016] 3. When the sliding screen plate in the pumping device moves, it can squeeze the water inside the second insertion cavity. The squeezed water can pass through the third one-way valve and the first one-way valve to impact the sliding screen plate, thereby separating the debris from the sliding screen plate and facilitating the rapid entry of water into the inlet pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a diagram showing the connection structure between the mounting column and the drainage bend in this invention. Figure 3 This is a schematic diagram showing the distribution of the blades inside the water collection hood in this invention; Figure 4 This is a schematic diagram showing the distribution of the blades and sleeve in this invention; Figure 5 This is a diagram showing the connection structure between the sliding mesh plate and the water inlet pipe in this invention; Figure 6 This is a schematic diagram showing the distribution of the blades and inlet pipe in this invention; Figure 7 This is a diagram showing the contact structure between the slide bar and the actuating tooth in this invention. Figure 8 for Figure 7 Enlarged view of A in the middle; Figure 9 This is a diagram showing the connection structure of the chamfer and sliding mesh plate in this invention.

[0018] 1. Drive motor; 2. Mounting column; 3. Drainage bend; 4. Pumping riser; 41. Support rod; 42. Drive rod; 43. Paddle; 44. Sleeve; 45. Slide rod; 46. Connecting spring; 5. Inlet pipe; 51. Inlet hole; 52. Sliding mesh plate; 53. Actuating teeth; 54. Inlet plate; 55. Chamfer; 56. Support block; 57. Support spring; 58. Scraper; 59. First check valve; 510. Dividing plate; 511. Second check valve; 512. Third check valve; 513. Sliding groove; 514. First insertion cavity; 515. Second insertion cavity; 6. Water collection cover. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] Example 1: Please refer to Figure 1-9 As shown, the present invention provides a technical solution: The present invention is a water pumping device with a protective structure, including a drainage bend 3 and a water pumping vertical pipe 4 fixed at the lower end of the drainage bend 3. A water collection cover 6 is fixed at the lower end of the water pumping vertical pipe 4, and a water inlet pipe 5 is fixed at the lower end of the water collection cover 6. A paddle 43 rotates inside the water collection cover 6. A transmission rod 42 is inserted and fixed on the paddle 43. A transmission motor 1 is connected to the upper end of the transmission rod 42. The transmission motor 1 is fixed on the drainage bend 3. A toggle structure is connected to the lower end of the transmission rod 42. The output shaft of the drive motor 1 can drive the blade 43 to rotate inside the water collection hood 6 via the transmission rod 42. During this process, the blade 43 can drive the air below the water collection hood 6 to be transported into the drain bend 3. At this time, the inside of the water collection hood 6 is under negative pressure. When the operator places the lower end of the water collection hood 6 inside the water, the external atmospheric pressure can drive the water into the inside of the water collection hood 6, thereby enabling the pumping vertical pipe 4 to drive the water inside the water collection hood 6 to be discharged through the drain bend 3, thus realizing the pumping of water through the pumping device.

[0022] The water inlet pipe 5 has a water inlet hole 51, a second insertion cavity 515 and a first insertion cavity 514. A sliding mesh plate 52 slides on the water inlet pipe 5. The sliding mesh plate 52 is inserted into the second insertion cavity 515 and the first insertion cavity 514. A dividing plate 510 is fixed inside the second insertion cavity 515 and the first insertion cavity 514. A support spring 57 is fixed between one end of the sliding mesh plate 52 and the dividing plate 510. A toggle tooth 53 is fixed on the inner wall of the sliding mesh plate 52. The toggle tooth 53 abuts against the toggle structure. When the pumping riser 4 drives the water inside the water collection hood 6 to be discharged through the drain bend 3, the water can pass through the sliding screen 52 and enter the interior of the water inlet pipe 5. During this process, the sliding screen 52 can filter the water to prevent impurities in the water from contacting the blades 43. Since the sliding screen plate 52 can slide on the water inlet pipe 5, when the sliding screen plate 52 slides inside the second insertion cavity 515 and the first insertion cavity 514, the debris penetrating the sliding screen plate 52 can be impacted by the water liquid, which can realize the separation of debris on the sliding screen plate 52 by the water liquid. Example 2: Please refer to Figure 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, when the sliding mesh plate 52 squeezes the water inside the second insertion cavity 515, the squeezed water can penetrate the third one-way valve 512 and the first one-way valve 59 to impact the sliding mesh plate 52, thereby achieving the separation of debris from the sliding mesh plate 52.

[0023] A sliding groove 513 is provided on the sliding mesh plate 52. A scraper 58 is inserted into the sliding groove 513. The scraper 58 is fixed on the water inlet pipe 5 on the side near the second insertion cavity 515. A first one-way valve 59 is connected to the scraper 58 at equal intervals. A third one-way valve 512 is connected to the end of the sliding mesh plate 52 that is inserted into the second insertion cavity 515 at equal intervals. A water inlet plate 54 is fixed on the inner wall of the second insertion cavity 515. A second one-way valve 511 is fixed on the water inlet plate 54 at equal intervals. When the sliding mesh plate 52 slides from the first insertion cavity 514 to the inside of the second insertion cavity 515, the scraper 58 can scrape the debris on the sliding mesh plate 52, which can quickly separate the debris from the sliding mesh plate 52, and at the same time the support spring 57 can store force to work. When the sliding mesh plate 52 squeezes the water inside the second insertion cavity 515, the squeezed water can pass through the third one-way valve 512 and the first one-way valve 59 to impact the sliding mesh plate 52, thereby separating the debris from the sliding mesh plate 52. It should be noted that the second check valve 511 allows the water inside the inlet pipe 5 to pass through the inlet plate 54 and enter the second insertion cavity 515. When the sliding mesh plate 52 squeezes the water inside the second insertion cavity 515, the inside of the second insertion cavity 515 is under high pressure. At this time, it is difficult for the water inside the inlet pipe 5 to pass through the inlet plate 54 and enter the second insertion cavity 515. This allows the squeezed water to pass through the third check valve 512 and the first check valve 59 and impact the sliding mesh plate 52.

[0024] The lower wall of the inner cavity of the sliding groove 513 is chamfered 55. One end of the sliding mesh plate 52 abuts against the inner wall of the second insertion cavity 515. The scraper 58 abuts against the inner wall of the sliding groove 513. The scraper 58 is a flexible plate structure. The water inlet plate 54 does not contact the sliding mesh plate 52. When the water flows through the third check valve 512 and the first check valve 59 and impacts the sliding screen plate 52, the water can concentrate inside the sliding groove 513, and then the debris falling from the sliding screen plate 52 will be quickly discharged under the guidance of the chamfer 55. When the scraper 58 is set as a flexible plate structure, it can achieve strong toughness, making it easy for the scraper 58 to scrape the debris on the sliding mesh plate 52.

[0025] The actuating structure includes a sleeve 44 fixed on the transmission rod 42, a slide rod 45 inserted inside the sleeve 44, a connecting spring 46 fixed between the slide rod 45 and the sleeve 44, the slide rod 45 abutting against the actuating tooth 53, the end of the slide rod 45 is provided with a rounded corner, and the end of the actuating tooth 53 is also provided with a rounded corner. When the output shaft of the drive motor 1 drives the blade 43 to rotate through the transmission rod 42, the slide rod 45 on the sleeve 44 can move the actuating tooth 53. At this time, the actuating tooth 53 can drive the sliding mesh plate 52 to slide into the second insertion cavity 515. Since there is a connecting spring 46 fixed between the slide rod 45 and the sleeve 44, when the sliding mesh plate 52 can no longer slide, the repulsive force generated by the actuating tooth 53 will drive the slide rod 45 to squeeze the connecting spring 46. During this process, the end of the slide rod 45 will slide on the rounded corner of the end of the actuating tooth 53. When the slide bar 45 and the actuating tooth 53 are separated, the repulsive force generated by the connecting spring 46 will drive the slide bar 45 to reset, which will facilitate the slide bar 45 to push the sliding mesh plate 52 through the actuating tooth 53, so as to quickly separate the debris on the sliding mesh plate 52. Example 3: Please refer to Figure 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, the pumping vertical pipe 4 can drive the water inside the water collection hood 6 to guide the water flow to the drain bend 3, so as to realize the rapid discharge of the water inside the water inlet pipe 5 to the outside.

[0026] The lower end of the water inlet pipe 5 is fixed with a support block 56, and the upper end of the water inlet pipe 5 is fixed by a flange and a water collection cover 6. The inner cavity of the water inlet pipe 5 is connected to the inner cavity of the water collection cover 6. The support block 56 can block the lower end of the water inlet pipe 5, so that the water can only pass through the sliding mesh plate 52 and enter the interior of the water inlet pipe 5. The water inlet pipe 5 can drive the water through the water collection hood 6 and enter the interior of the pumping vertical pipe 4, so that the drainage bend 3 can discharge the water inside the water collection hood 6.

[0027] The inner cavity of the drain bend 3 is connected to the inner cavity of the pumping riser 4. The drain bend 3 and the pumping riser 4 are fixed together. The inner cavity of the drain bend 3 is connected to the inner cavity of the water collection cover 6 through the pumping riser 4. The pumping riser 4 can guide the water inside the water collection sump 6 to the drain bend 3, so that the water inside the inlet pipe 5 can be quickly discharged to the outside.

[0028] A mounting post 2 is fixed on the drain bend 3, and the drive motor 1 is fixed on the mounting post 2. The drive rod 42 passes through the water inlet pipe 5, the water collection cover 6, the drain bend 3 and the mounting post 2 and is fixed to the output shaft of the drive motor 1.

[0029] A support rod 41 is sleeved on the transmission rod 42. The support rod 41 is fixed inside the drainage bend 3 and the pumping riser 4. The transmission rod 42 rotates on the support rod 41. When the output shaft of the drive motor 1 drives the drive rod 42 to rotate, the mounting column 2 and the support rod 41 can support the drive rod 42, so that the drive rod 42 can drive the blade 43 to rotate stably inside the water collection hood 6, thereby enabling the blade 43 to transport water inside the water collection hood 6.

[0030] A sealing ring is fitted on the part of the transmission rod 42 that passes through the mounting column 2. The fixed end of the transmission motor 1 is fixed to the mounting column 2 and the drainage bend 3. The mounting column 2 is a columnar structure. The sealing ring can seal the gap between the transmission rod 42 and the mounting post 2. The sealing ring can be made of rubber. The sealing ring is not shown in the attached drawings of the instruction manual. Working principle: The output shaft of the drive motor 1 can drive the blade 43 to rotate inside the water collection hood 6 through the transmission rod 42. During this process, the blade 43 can drive the air below the water collection hood 6 to be transported into the drain bend 3. At this time, the inside of the water collection hood 6 is under negative pressure. When the operator places the lower end of the water collection hood 6 inside the water, the external atmospheric pressure can drive the water through the sliding mesh plate 52 into the water inlet pipe 5. During this process, the sliding mesh plate 52 can filter the water and prevent impurities in the water from contacting the blade 43. Since the sliding screen plate 52 can slide on the water inlet pipe 5, when the output shaft of the drive motor 1 drives the blade 43 to rotate through the drive rod 42, the slide rod 45 on the sleeve 44 can move the actuating tooth 53. At this time, the actuating tooth 53 can drive the sliding screen plate 52 to slide into the second insertion cavity 515. During this process, the support spring 57 can store force and work. The debris on the sliding screen plate 52 can be agitated by the water, which can facilitate the separation of the debris from the sliding screen plate 52 by the water. Since a connecting spring 46 is fixed between the slide rod 45 and the sleeve 44, when the sliding mesh plate 52 can no longer slide, the repulsive force generated by the actuating tooth 53 will cause the slide rod 45 to squeeze the connecting spring 46. During this process, the end of the slide rod 45 will slide on the rounded corner of the end of the actuating tooth 53. When the slide rod 45 and the actuating tooth 53 are separated, the repulsive force generated by the connecting spring 46 will cause the slide rod 45 to return to its original position, which will facilitate the subsequent pushing of the slide rod 45 against the sliding mesh plate 52 by the actuating tooth 53. When the slide bar 45 does not push the actuating tooth 53, the repulsive force generated by the support spring 57 can drive the sliding screen plate 52 to reset. At this time, the debris on the sliding screen plate 52 can be agitated by the water again, realizing the rapid separation of the debris on the sliding screen plate 52, and realizing the water being pumped out through the pumping device. When the sliding mesh plate 52 slides from the first insertion cavity 514 to the inside of the second insertion cavity 515, the scraper 58 can scrape the debris on the sliding mesh plate 52, which can quickly separate the debris from the sliding mesh plate 52, and at the same time the support spring 57 can store force to work. When the sliding mesh plate 52 squeezes the water inside the second insertion cavity 515, the squeezed water can pass through the third one-way valve 512 and the first one-way valve 59 to impact the sliding mesh plate 52, thereby separating the debris from the sliding mesh plate 52. When the water passes through the third one-way valve 512 and the first one-way valve 59 to impact the sliding mesh plate 52, the water can concentrate inside the sliding groove 513. Subsequently, the debris falling from the sliding mesh plate 52 will be quickly discharged under the guidance of the chamfer 55.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A pumping device with a protective structure, comprising a drain bend (3) and a pumping riser (4) fixed to the lower end of the drain bend (3), characterized in that: The lower end of the pumping vertical pipe (4) is fixed with a water collection cover (6), the lower end of the water collection cover (6) is fixed with a water inlet pipe (5), the inside of the water collection cover (6) has a rotating blade (43), a transmission rod (42) is inserted and fixed on the blade (43), the upper end of the transmission rod (42) is connected to a transmission motor (1), the transmission motor (1) is fixed on the drainage bend (3), and the lower end of the transmission rod (42) is connected to a toggle structure; The water inlet pipe (5) is provided with a water inlet hole (51), and the water inlet pipe (5) is provided with a second insertion cavity (515) and a first insertion cavity (514). A sliding mesh plate (52) is slidably mounted on the water inlet pipe (5). The sliding mesh plate (52) is inserted into the second insertion cavity (515) and the first insertion cavity (514). A dividing plate (510) is fixed inside the second insertion cavity (515) and the first insertion cavity (514). A supporting spring (57) is fixed between one end of the sliding mesh plate (52) and the dividing plate (510). A toggle tooth (53) is fixed on the inner wall of the sliding mesh plate (52). The toggle tooth (53) abuts against the toggle structure.

2. The pumping device with a protective structure according to claim 1, characterized in that, The sliding mesh plate (52) has a sliding groove (513), and a scraper (58) is inserted into the sliding groove (513). The scraper (58) is fixed on the side of the water inlet pipe (5) near the second insertion cavity (515). A first one-way valve (59) is connected to the scraper (58) at equal intervals. A third one-way valve (512) is connected to the end of the sliding mesh plate (52) inserted into the second insertion cavity (515) at equal intervals. A water inlet plate (54) is fixed to the inner wall of the second insertion cavity (515). A second one-way valve (511) is fixed to the water inlet plate (54) at equal intervals.

3. A pumping device with a protective structure according to claim 2, characterized in that, The lower wall of the inner cavity of the sliding groove (513) is chamfered (55). One end of the sliding mesh plate (52) abuts against the inner wall of the second insertion cavity (515). The scraper (58) abuts against the inner wall of the sliding groove (513). The scraper (58) is a flexible plate structure. The water inlet plate (54) does not contact the sliding mesh plate (52).

4. A pumping device with a protective structure according to claim 1, characterized in that, The actuating structure includes a sleeve (44) fixed on a transmission rod (42), a slide rod (45) inserted inside the sleeve (44), a connecting spring (46) fixed between the slide rod (45) and the sleeve (44), the slide rod (45) and the actuating tooth (53) abutting, the end of the slide rod (45) is provided with a rounded corner, and the end of the actuating tooth (53) is also provided with a rounded corner.

5. A pumping device with a protective structure according to claim 1, characterized in that, The lower end of the water inlet pipe (5) is fixed with a support block (56), and the upper end of the water inlet pipe (5) is fixed by a flange and a water collection cover (6). The inner cavity of the water inlet pipe (5) and the inner cavity of the water collection cover (6) are connected.

6. A pumping device with a protective structure according to claim 1, characterized in that, The inner cavity of the drain bend (3) is connected to the inner cavity of the pumping riser (4), the drain bend (3) and the pumping riser (4) are fixed together, and the inner cavity of the drain bend (3) is connected to the inner cavity of the water collection cover (6) through the pumping riser (4).

7. A pumping device with a protective structure according to claim 1, characterized in that, The drainage bend (3) is fixed with a mounting column (2), the drive motor (1) is fixed on the mounting column (2), and the drive rod (42) passes through the water inlet pipe (5), the water collection cover (6), the drainage bend (3) and the mounting column (2) and is fixed to the output shaft of the drive motor (1).

8. A pumping device with a protective structure according to claim 1, characterized in that, A support rod (41) is sleeved on the transmission rod (42). The support rod (41) is fixed inside the drainage bend (3) and the pumping riser (4). The transmission rod (42) rotates on the support rod (41).

9. A pumping device with a protective structure according to claim 1, characterized in that, The transmission rod (42) is fitted with a sealing ring at the part that passes through the mounting column (2). The fixed end of the transmission motor (1) is fixed to the mounting column (2) and the drainage bend (3). The mounting column (2) is a columnar structure.

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