Submersible sewage pump with adjustable impeller gap

Abstract

The utility model relates to the technical field of sewage pumps, in particular to a submersible sewage pump with an adjustable impeller gap, which comprises a pump body, a motor casing is arranged on the front side of the pump body, a sewage outlet is arranged on the right side of the pump body, a pump seat is arranged on the rear side of the pump body, and a sewage inlet is fixedly mounted on the rear side of the pump seat. An adjusting mechanism is arranged between the pump base and the pump body, a pump bin is formed in the pump body, an impeller is arranged in the pump bin, and through the arrangement of the submersible sewage pump capable of adjusting the impeller gap, the impeller gap can be adjusted under matched driving of a driving rotary knob and an adjusting screw rod through the structural design in the adjusting mechanism. And the pump seat is close to or far away from the pump bin, so that the purpose of adjusting the clearance of the impeller is achieved, a worker can conveniently carry out adjustment operation according to the sewage condition, the efficiency of the sewage pump is guaranteed, stable operation of the sewage pump is facilitated, and subsequent use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage pumps, in particular to a submersible sewage pump with adjustable impeller clearance. Background Technique

[0002] Submersible sewage pumps are widely used in transporting media with a certain concentration. The impellers of sewage pumps are usually semi-open structures, which can tear and cut substances such as long fibers, bags, belts, grass, and cloth strips in sewage, and then discharge them smoothly. They are especially suitable for transporting liquids containing hard solids and fibrous substances.

[0003] For a currently used submersible sewage pump with adjustable impeller clearance, the clearance between the impeller and the pump base in the sewage pump mostly does not have adjustability. Therefore, when discharging sewage with different concentrations of contaminants, the fixed impeller clearance is likely to cause the efficiency of the pump to decline and even lead to blockage, which is not conducive to the stable operation of the sewage pump and affects subsequent use.

[0004] In summary, the utility model solves the problems in the above background technique by designing a submersible sewage pump with adjustable impeller clearance. Content of the Utility Model

[0005] The purpose of the utility model is to provide a submersible sewage pump with adjustable impeller clearance to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A submersible sewage pump with adjustable impeller clearance includes a pump body. An electric motor housing is arranged on the front side of the pump body. A sewage discharge port is arranged on the right side of the pump body. A pump base is arranged on the rear side of the pump body. A sewage inlet is fixedly installed on the rear side of the pump base. An adjusting mechanism is arranged between the pump base and the pump body. A pump chamber is opened inside the pump body, and an impeller is arranged inside the pump chamber.

[0008] The adjusting mechanism includes a screw hole and a fastener. The screw hole is opened on the rear side surface of the pump body. The fastener is fixedly installed on the rear side surface of the pump base. A rotating bearing is embedded on the rear side surface of the fastener. An adjusting screw is arranged inside the rotating bearing. A driving knob is fixedly installed at the rear end of the adjusting screw.

[0009] As a preferred scheme of the utility model, the sewage discharge port is communicated with the inside of the pump chamber.

[0010] As a preferred scheme of the utility model, an electric motor is arranged inside the electric motor housing, and the output end of the electric motor extends into the inside of the pump chamber and is fixed to the front side of the impeller.

[0011] As a preferred solution of the present utility model, the front end of the sewage inlet penetrates through the rear side surface of the pump base and is flush with its front side surface.

[0012] As a preferred solution of the present utility model, a flexible sealing ring is provided on the outer side surface of the pump base, and it is sealingly fitted with the inner wall of the pump chamber through the flexible sealing ring.

[0013] As a preferred solution of the present utility model, the fasteners are symmetrically distributed left and right with respect to the rear central axis of the pump base. The position of the adjusting screw rod corresponds to the screw hole, and it is threadedly connected to the hole wall of the screw hole.

[0014] As a preferred solution of the present utility model, the adjusting screw rod is made of stainless steel and formed by cold heading.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, by providing a submersible sewage pump with adjustable impeller clearance, through the structural design in the adjusting mechanism, under the combined drive of the driving knob and the adjusting screw rod, the pump base is made to approach or move away from the pump chamber, thereby achieving the purpose of adjusting the impeller clearance, facilitating the staff to adjust according to the dirt situation, ensuring the efficiency of the sewage pump, being beneficial to the stable operation of the sewage pump, and facilitating subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the pump body of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the pump base of the present utility model.

[0020] In the figure: 1, pump body; 2, motor housing; 3, sewage outlet; 4, pump base; 401, sewage inlet; 5, adjusting mechanism; 501, screw hole; 502, fastener; 503, rotating bearing; 504, adjusting screw rod; 505, driving knob; 6, pump chamber; 601, impeller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given. However, the present utility model 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 disclosure of the present utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used herein in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] For the embodiments, please refer to Figures 1-3 The present utility model provides a technical solution:

[0026] A submersible sewage pump with adjustable impeller clearance, including a pump body 1. A motor housing 2 is provided on the front side of the pump body 1. A sewage discharge port 3 is provided on the right side of the pump body 1. A pump seat 4 is provided on the rear side of the pump body 1. A sewage inlet 401 is fixedly installed on the rear side of the pump seat 4. An adjusting mechanism 5 is provided between the pump seat 4 and the pump body 1. A pump chamber 6 is opened inside the pump body 1. An impeller 601 is provided inside the pump chamber 6;

[0027] It should be noted that the sewage discharge port 3 is communicated with the inside of the pump chamber 6. The front end of the sewage inlet 401 penetrates through the rear side surface of the pump seat 4 and is flush with its front side surface;

[0028] Specifically, a motor is provided inside the motor housing 2, and the output end of the motor extends into the pump chamber 6 and is fixed to the front side of the impeller 601;

[0029] In this embodiment, the motor is provided to directly drive the impeller 601 to realize the quick start and stop of the sewage pump.

[0030] In this embodiment, please refer to Figure 1 、 Figure 2 and Figure 3, the adjusting mechanism 5 includes a screw hole 501 and a fastener 502. The screw hole 501 is opened on the rear side surface of the pump body 1, and the fastener 502 is fixedly installed on the rear side surface of the pump base 4. A rotating bearing 503 is embedded on the rear side surface of the fastener 502. An adjusting screw 504 is arranged inside the rotating bearing 503, and a driving knob 505 is fixedly installed at the rear end of the adjusting screw 504;

[0031] Specifically, the fasteners 502 are symmetrically distributed about the rear central axis of the pump base 4. The position of the adjusting screw 504 corresponds to the screw hole 501, and it is threadedly connected to the hole wall of the screw hole 501. The adjusting screw 504 is made of stainless steel and is formed by cold heading;

[0032] In this embodiment, the adjusting screw 504 made of stainless steel can improve its corrosion resistance and wear resistance. Through the setting of the driving knob 505, the adjusting screw 504 is driven, resulting in a threaded engagement drive between the adjusting screw 504 and the screw hole 501, thereby achieving the function of adjusting the displacement of the pump base 4 and meeting the adjustment requirement of the distance between the pump base 4 and the impeller 601.

[0033] It should be noted that a flexible sealing ring is arranged on the outer surface of the pump base 4, and it is hermetically attached to the inner wall of the pump chamber 6 through the flexible sealing ring;

[0034] The working process of the present utility model: When using a submersible sewage pump with adjustable impeller clearance, connect the sewage outlet 3 and the sewage inlet 401 to the sewage pipeline, and then the motor in the motor housing 2 can be started. Driven by the motor, the impeller 601 starts to rotate, thus completing the startup of the sewage pump. When it is necessary to discharge sewage with different concentrations of contaminants, an external force is applied to the driving knob 505. Subsequently, the driving knob 505 drives the adjusting screw 504 to rotate, and the adjusting screw 504 rotates in cooperation with the rotating bearing 503. At the same time, under the threaded connection between the adjusting screw 504 and the screw hole 501, the fastener 502 drives the pump base 4 to move, so that the pump base 4 moves towards or away from the impeller 601. In this way, the clearance of the impeller 601 is adjusted, which is beneficial to the better operation of the sewage pump and meets the needs of the users.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A submersible sewage pump with adjustable impeller clearance, comprising a pump body (1), characterized in that: A motor housing (2) is provided on the front side of the pump body (1), a sewage discharge port (3) is provided on the right side of the pump body (1), a pump base (4) is provided on the rear side of the pump body (1), a sewage inlet (401) is fixedly installed on the rear side of the pump base (4), an adjusting mechanism (5) is provided between the pump base (4) and the pump body (1), a pump chamber (6) is formed inside the pump body (1), and an impeller (601) is provided inside the pump chamber (6). The adjusting mechanism (5) includes a screw hole (501) and a fastener (502). The screw hole (501) is formed on the rear surface of the pump body (1), the fastener (502) is fixedly installed on the rear surface of the pump base (4), a rotating bearing (503) is embedded on the rear surface of the fastener (502), an adjusting screw (504) is provided inside the rotating bearing (503), and a driving knob (505) is fixedly installed at the rear end of the adjusting screw (504).

2. The submersible sewage pump with adjustable impeller clearance according to claim 1, characterized in that: The sewage discharge port (3) is communicated with the inside of the pump chamber (6).

3. The submersible sewage pump with adjustable impeller clearance according to claim 1, wherein: A motor is provided inside the motor housing (2), and the output end of the motor extends into the pump chamber (6) and is fixed to the front side of the impeller (601).

4. The submersible sewage pump with adjustable impeller clearance according to claim 1, wherein: The front end of the sewage inlet (401) penetrates through the rear surface of the pump base (4) and is flush with its front surface.

5. The submersible sewage pump with adjustable impeller clearance according to claim 1, wherein: A flexible sealing ring is provided on the outer surface of the pump base (4), and it is hermetically attached to the inner wall of the pump chamber (6) through the flexible sealing ring.

6. The submersible sewage pump with adjustable impeller clearance according to claim 1, characterized in that: The fasteners (502) are symmetrically distributed about the rear central axis of the pump base (4). The position of the adjusting screw (504) corresponds to that of the screw hole (501), and it is threadedly connected to the hole wall of the screw hole (501).

7. The submersible sewage pump with adjustable impeller clearance according to claim 1, wherein: The adjusting screw (504) is made of stainless steel and formed by cold heading.

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