Sewage pump with adjustable impeller gap

Abstract

The utility model discloses a sewage pump with an adjustable impeller gap, and belongs to the technical field of sewage pumps. A sewage pump with an adjustable impeller gap comprises a motor shell and a pump shell, a rotating shaft is arranged at the lower end of the motor shell, a motor is arranged in the motor shell, an output shaft of the motor is in transmission connection with the rotating shaft, the pump shell is in sliding connection with the rotating shaft, an impeller is arranged in the pump shell, the impeller is fixedly connected with the rotating shaft, and a distance adjusting structure is arranged between the motor shell and the pump shell. And the distance between the motor shell and the pump shell is adjusted. The sewage pump has the beneficial effects that the structure is firm, and the impeller gap can be conveniently adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage pumps, in particular to a sewage pump capable of adjusting the impeller clearance. BACKGROUND

[0002] The sewage pump is a kind of pump equipment specially designed for conveying sewage containing solid particles and long fiber substances. They are widely used in municipal engineering, construction site, industrial wastewater treatment, agricultural irrigation and other fields, and are an indispensable part of the sewage treatment system. The impeller clearance of the sewage pump refers to the distance between the impeller and the pump shell, which has an important influence on the performance of the pump. Proper impeller clearance can ensure efficient operation of the pump, while excessive or insufficient clearance can cause various problems.

[0003] After long-term use, the impeller clearance between the impeller and the pump shell will change due to the wear of solid particles in the sewage, affecting the working efficiency of the sewage pump.

[0004] Therefore, the purpose of the present application is to provide a sewage pump capable of adjusting the clearance between the impeller and the pump shell to improve the working efficiency of the sewage pump. INVENTION CONTENTS

[0005] The content part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The content part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide a sewage pump capable of adjusting the impeller clearance, comprising a motor shell and a pump shell, the lower end of the motor shell is provided with a rotating shaft, the motor shell is provided with a motor, the output shaft of the motor is in transmission connection with the rotating shaft, the pump shell is in sliding connection with the rotating shaft, the pump shell is provided with an impeller, the impeller is in fixed connection with the rotating shaft, and a distance adjusting structure is arranged between the motor shell and the pump shell to adjust the distance between the motor shell and the pump shell.

[0007] During use, when it is necessary to readjust the clearance between the impeller and the pump shell, only the distance adjusting structure is needed to adjust the distance between the motor shell and the pump shell, so that the rotating shaft can slide in the pump shell, thereby readjusting the clearance between the impeller and the pump shell and improving the working efficiency of the sewage pump.

[0008] Further, the distance adjusting structure comprises an upper base plate arranged at the lower end of the motor shell and a lower base plate arranged at the upper end of the pump shell, and the rotating shaft is movably arranged in the upper base plate and the lower base plate.

[0009] The bottom surface of the upper substrate protrudes to form a first trapezoidal platform, and the top surface of the lower substrate protrudes to form a second trapezoidal platform, with the first trapezoidal platform and the second trapezoidal platform being disposed opposite to each other.

[0010] A movable support platform is provided between the first trapezoidal platform and the second trapezoidal platform.

[0011] Furthermore, a fixing screw extending axially along the rotating shaft is fixedly disposed on the second trapezoidal platform, and the first trapezoidal platform is movably disposed on the fixing screw. An axial limiting screw head is threadedly connected to one end of the fixing screw near the first trapezoidal platform.

[0012] Furthermore, a first slope is formed on the first trapezoidal platform, and a second slope is formed on the second trapezoidal platform opposite to the first slope. The top surface of the support platform is fitted with the first slope, and the bottom surface of the support platform is fitted with the second slope.

[0013] Furthermore, the first slope forms a 30° angle with the bottom surface of the upper substrate.

[0014] Furthermore, there are two support platforms arranged opposite to each other, and the two support platforms are slidably connected by a double-ended screw, with radial limiting screw heads threaded to both ends of the double-ended screw.

[0015] Furthermore, an inlet is provided on the bottom surface of the pump casing, and an outlet is provided on the side wall of the pump casing.

[0016] Furthermore, a mounting base is fixedly connected to the bottom surface of the pump casing, and an inlet pipe is integrally formed on the mounting base. The inlet pipe is connected to the inlet port, and the outlet port is connected to the outlet pipe.

[0017] The beneficial effects of this application are as follows:

[0018] 1. By rotating the radial limiting screw head, the distance between the two support platforms can be adjusted, allowing the two support platforms to move along the second slope. After the support platforms move, the first trapezoidal platform will automatically descend or rise along with the support platforms. Then, tighten the axial limiting screw head to fix the first trapezoidal platform and the second trapezoidal platform, thereby realizing the adjustment of the distance between the pump casing and the motor casing, and thus realizing the adjustment of the distance between the impeller and the pump casing.

[0019] 2. Set the first ramp and the bottom surface of the upper base plate to form a 30° angle to facilitate the calculation of the moving distance. Based on the property of a right triangle containing a 30° angle, the distance that the support platform moves along the first ramp is the distance that the first trapezoidal platform moves along the axis of rotation, which is the adjustment distance between the impeller and the pump casing. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0021] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0022] In the attached diagram:

[0023] Figure 1 This is an overall schematic diagram of an embodiment of this application;

[0024] Figure 2 This is a partial structural cross-sectional schematic diagram of an embodiment of this application, mainly showing the position of the impeller;

[0025] Figure 3 This is a partial structural cross-sectional schematic diagram of an embodiment of this application, mainly showing the angle between the first slope and the bottom surface of the upper substrate.

[0026] Figure label:

[0027] 1. Motor housing; 2. Pump housing; 3. Shaft; 4. Impeller; 5. Adjustable pitch structure; 501. Upper base plate; 502. Lower base plate; 503. First trapezoidal platform; 504. Second trapezoidal platform; 505. Support platform; 506. Fixing screw; 507. Axial limiting screw head; 508. First ramp; 509. Second ramp; 510. Double-ended screw; 511. Radial limiting screw head; 6. Inlet; 7. Outlet; 8. Mounting base; 9. Inlet pipe; 10. Outlet pipe. Detailed Implementation

[0028] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0029] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0030] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0031] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] An adjustable impeller clearance sewage pump includes a motor housing 1 and a pump housing 2. A rotating shaft 3 is provided at the lower end of the motor housing 1. A motor is installed inside the motor housing 1, and the output shaft of the motor is drivenly connected to the rotating shaft 3. The pump housing 2 is slidably connected to the rotating shaft 3. An impeller 4 is provided inside the pump housing 2. The impeller 4 is fixed to the end of the rotating shaft 3 by a threaded connection. An adjustable clearance structure 5 is provided between the motor housing 1 and the pump housing 2. The adjustable clearance structure 5 can adjust the distance between the pump housing 2 and the motor housing 1, so that the rotating shaft 3 can slide in the pump housing 2, thereby realizing the adjustment of the distance between the impeller 4 and the pump housing 2.

[0034] Specifically, the adjustable pitch structure 5 includes an upper base plate 501 fixedly connected to the motor housing 1 at its lower end by bolts, and a lower base plate 502 fixedly connected to the pump housing 2 at its upper end by bolts. A rotating shaft 3 is movably inserted into the upper base plate 501 and the lower base plate 502. A first trapezoidal platform 503 protrudes from the bottom surface of the upper base plate 501, and two opposing first ramps 508 are formed on the first trapezoidal platform 503, forming a 30° angle with the bottom surface of the upper base plate 501. A second trapezoidal platform 504 protrudes from the top surface of the lower base plate 502, and the second trapezoidal platform 504 is perpendicular to the first trapezoidal platform 502. The first trapezoidal platform 503 is arranged opposite to the second trapezoidal platform 504, and two opposite second slopes 509 are formed on the second trapezoidal platform 504. The second slopes 509 are opposite to the first slope 508. Two support platforms 505 are movably arranged between the first trapezoidal platform 503 and the second trapezoidal platform 504. The two support platforms 505 are arranged opposite to each other. The top surface of the support platform 505 is in contact with the first slope 508, and the bottom surface of the support platform 505 is in contact with the second slope 509. The two support platforms 505 are slidably connected by a double-ended screw 510. The two ends of the double-ended screw 510 and the side of the two support platforms 505 that is far away from each other are threadedly connected to radial limiting screw heads 511.

[0035] By rotating the radial limiting screw head 511, the distance between the two support platforms 505 can be readjusted, allowing the two support platforms 505 to slide along the second slope 509. The first trapezoidal platform 503 can automatically descend or rise with the support platforms 505, driving the motor housing 1 to move closer to or further away from the pump housing 2. When the motor housing 1 moves closer to or further away from the pump housing 2, it can drive the rotating shaft 3 to move, thereby allowing the rotating shaft 3 to slide relative to the pump housing 2, adjusting the distance between the impeller 4 at the end of the rotating shaft 3 and the pump housing 2. Based on the property of a right triangle with a 30° angle, the distance that the support platform 505 moves along the second slope 509 is the relative distance between the motor housing 1 and the pump housing 2, which is the adjustment distance between the impeller 4 and the pump housing 2. Scale lines are marked on the second slope 509 to facilitate more intuitive operation by the staff.

[0036] A fixing screw 506 extending axially along the rotating shaft 3 is fixedly installed on the second trapezoidal platform 504. The first trapezoidal platform 503 is movably installed on the fixing screw 506. An axial limiting screw head 507 is threadedly connected to one end of the fixing screw 506 near the first trapezoidal platform 503. After the gap between the impeller 4 and the pump housing 2 is adjusted, tightening the axial limiting screw head 507 can fix the first trapezoidal platform 503 and the second trapezoidal platform 504, making the connection between the motor housing 1 and the pump housing 2 more stable.

[0037] To facilitate the installation of the sewage pump at the bottom of the sewage tank, the bottom surface of the pump casing 2 is fixedly connected to the mounting base 8 by bolts. The bottom surface of the pump casing 2 is provided with an inlet 6, and the side wall of the pump casing 2 is provided with an outlet 7. An inlet pipe 9 is integrally formed on the mounting base 8. The inlet pipe 9 is connected to the inlet 6, and the outlet 7 is connected to the outlet pipe 10 to facilitate the subsequent installation of the drainage pipe.

[0038] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A sewage pump with adjustable impeller clearance, comprising a motor housing (1) and a pump housing (2), wherein a rotating shaft (3) is disposed at the lower end of the motor housing (1), a motor is disposed inside the motor housing (1), and the output shaft of the motor is connected to the rotating shaft (3) for transmission, characterized in that, The pump casing (2) is slidably connected to the rotating shaft (3). An impeller (4) is provided inside the pump casing (2). The impeller (4) is fixedly connected to the rotating shaft (3). An adjustable distance structure (5) is provided between the motor casing (1) and the pump casing (2) to adjust the distance between the motor casing (1) and the pump casing (2).

2. The sewage pump with adjustable impeller clearance according to claim 1, characterized in that: The adjustable structure (5) includes an upper base plate (501) disposed at the lower end of the motor housing (1) and a lower base plate (502) disposed at the upper end of the pump housing (2), and the rotating shaft (3) is movably inserted into the upper base plate (501) and the lower base plate (502). The bottom surface of the upper substrate (501) protrudes to form a first trapezoidal platform (503), and the top surface of the lower substrate (502) protrudes to form a second trapezoidal platform (504). The first trapezoidal platform (503) and the second trapezoidal platform (504) are arranged opposite to each other. A support platform (505) is movably provided between the first trapezoidal platform (503) and the second trapezoidal platform (504).

3. A sewage pump with adjustable impeller clearance according to claim 2, characterized in that: A fixing screw (506) extending axially along the rotating shaft (3) is fixedly disposed on the second trapezoidal platform (504), and the first trapezoidal platform (503) is movably disposed on the fixing screw (506). An axial limiting screw head (507) is threadedly connected to one end of the fixing screw (506) near the first trapezoidal platform (503).

4. A sewage pump with adjustable impeller clearance according to claim 3, characterized in that: A first slope (508) is formed on the first trapezoidal platform (503), and a second slope (509) is formed on the second trapezoidal platform (504) opposite to the first slope (508). The top surface of the support platform (505) is fitted with the first slope (508), and the bottom surface of the support platform (505) is fitted with the second slope (509).

5. A sewage pump with adjustable impeller clearance according to claim 4, characterized in that: The first ramp (508) forms a 30° angle with the bottom surface of the upper substrate (501).

6. A sewage pump with adjustable impeller clearance according to claim 5, characterized in that: Two support platforms (505) are provided and arranged opposite to each other. The two support platforms (505) are slidably connected by a double-ended screw (510). The two ends of the double-ended screw (510) are threadedly connected to radial limiting screw heads (511).

7. A sewage pump with adjustable impeller clearance according to claim 1, characterized in that: The bottom surface of the pump casing (2) is provided with an inlet (6), and the side wall of the pump casing (2) is provided with an outlet (7).

8. A sewage pump with adjustable impeller clearance according to claim 7, characterized in that: The bottom surface of the pump casing (2) is fixedly connected to the mounting base (8), and an inlet pipe (9) is integrally formed on the mounting base (8). The inlet pipe (9) is connected to the inlet (6), and the outlet (7) is connected to the outlet pipe (10).

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