Amphibious sewage pump

Abstract

The utility model discloses an amphibious sewage pump. The amphibious sewage pump is characterized by comprising a motor shell and two end covers which are respectively arranged at two ends of the motor shell, a water isolation cover is arranged between the two end covers; a gap is formed between the water isolation cover and the motor shell to form a cooling cavity; communicating pipes are respectively arranged between a water inlet pipe and a water outlet pipe of the sewage pump and the cooling cavity; the communicating pipe comprises two hard pipes and a hose arranged between the two hard pipes and used for communicating the two hard pipes. The device can run on land and also can run in diving. The whole device is easy to process and manufacture, the sealing and waterproof effects are easy to realize, and the cost can be controlled to a certain extent. The hose can counteract mechanical abrasion caused by mechanical vibration to the hard pipe, the hard pipe occupying the main length can guarantee the main shape of the communicating pipe, and the overlong hose is prevented from being wound or hooked with external objects such as a line. And other parts are easy to assemble due to the hose.

Description

TECHNICAL FIELD

[0001] The utility model belongs to non - variable capacity pump technical field especially relates to amphibious sewage pump. BACKGROUND

[0002] Sewage pump is the collective name of the water pump that can pump sewage, and there are many types. Different types of sewage pumps are used in different places. The existing sewage pumps are divided into land operation and submersible operation according to the use environment. The submersible sewage pump is only suitable for operation in sewage, and the motor cooling relies on water cooling. The land sewage pump can only be suitable for land operation, and the motor cooling relies on the fan and the cooling fin.

[0003] The patent literature with the publication number CN107747545B discloses an amphibious pipeline pump. It solves the problem that the existing pipeline pump cannot be used on land and in water. The amphibious pipeline pump includes a pump body with inlet and outlet, a water wheel, and a submersible motor with a water jacket. By improving the position and structure of the water inlet hole and the water return hole in the water jacket cavity, the amphibious pipeline pump achieves the purpose of being used on land and in water. At the same time, a lower sealing cover, a single-end mechanical seal, and a pump sealing ring are added in the connecting seat, forming two lubricating oil chambers. Since the submersible motor with a water jacket is used, the cooling fan on the original dry-type motor is removed, reducing the operating noise of the pipeline pump. It can be used on land in ordinary environment and can be submerged in water.

[0004] In the above-mentioned patent scheme, the circulating water between the water jacket and the connecting seat cools the motor. However, the process interface of the motor (external circuit, lifting lug, gas valve, etc.) needs to be penetrated to the outside of the water jacket, so these process interfaces need to be sealed and waterproofed twice, i.e. the sealing on the motor shell inside the water jacket and the sealing when penetrating out of the water jacket, which requires high sealing performance. In addition, one of the connecting passages between the water jacket and the connecting seat is connected by hole-to-hole connection, but the additional hole cavity will inevitably increase the processing difficulty and cost of the shell structure; the other passage is connected by a hard pipe, but the mechanical vibration generated by the motor and the impeller will inevitably cause the vibration of the hard pipe suspended, which will inevitably cause the vibration and wear of the connection position of the two connection ends of the hard pipe, affecting the sealing effect and service life. UTILITY MODEL CONTENTS

[0005] In order to overcome the prior art amphibious sewage pump needs to solve the problem of heat dissipation, and the water jacket for circulating water, there is a high sealing requirement, and the pump body structure manufacturing cost and difficulty are increased. One purpose of the utility model is to provide an amphibious sewage pump, which is characterized by the following technical scheme: an amphibious sewage pump, comprising a motor shell and two end covers arranged at two ends of the motor shell; a water isolation cover is arranged between the two end covers; a gap is formed between the water isolation cover and the motor shell to form a cooling cavity; wherein a communication pipe is arranged between the cooling cavity and the inlet pipe and the outlet pipe of the sewage pump; the communication pipe comprises two hard pipes and a soft pipe arranged between the two hard pipes for connecting the two hard pipes.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an amphibious sewage pump, comprising a motor shell and two end covers arranged at two ends of the motor shell; a water isolation cover is arranged between the two end covers; a gap is formed between the water isolation cover and the motor shell to form a cooling cavity; wherein a communication pipe is arranged between the cooling cavity and the inlet pipe and the outlet pipe of the sewage pump; the communication pipe comprises two hard pipes and a soft pipe arranged between the two hard pipes for connecting the two hard pipes.

[0007] Further, one end of the end cover towards the motor shell is provided with an annular groove arranged along the outer contour; the two ends of the water isolation cover are located in the adjacent annular grooves respectively; the inner bottom of the annular groove is provided with a sealing ring; the water isolation cover abuts against the corresponding sealing ring.

[0008] Further, the motor shell comprises a pipe body with openings at two ends and an interface cover arranged at one end of the pipe body to seal the pipe body; one of the two end covers is arranged on the interface cover, and the other is arranged at the other end of the pipe body and seals the pipe body.

[0009] Specifically, a plurality of process interfaces are arranged on the interface cover; a through hole is arranged in the middle of the end cover close to the process interface; the process interface passes out of the through hole.

[0010] Specifically, the end cover away from the process interface is provided with an impeller shell; a foot support is arranged at one end of the impeller shell away from the motor shell.

[0011] Specifically, the outlet pipe is detachably connected to the side wall of the impeller shell; the inlet pipe is detachably connected to one end of the impeller shell away from the end cover; the inlet pipe is a bend pipe with a ninety-degree bend; the bend pipe is located in the foot support.

[0012] Specifically, one end of the communication pipe in communication with the water inlet pipe is in communication with the end of the water inlet pipe, and the other end is in communication with one end of the cooling cavity away from the impeller shell; one end of the communication pipe in communication with the water outlet pipe is in communication with one side of the impeller shell close to the water outlet pipe, and the other end is in communication with one end of the cooling cavity close to the impeller shell.

[0013] Further, the two ends of the hose are threadedly connected with the adjacent hard pipes.

[0014] Further, the motor shell is rotationally connected with a motor rotor; the impeller shell is rotationally connected with an impeller; and the impeller is coaxially arranged at one end of the motor rotor.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The water isolation cover is arranged on the outer periphery of the motor shell to form the cooling cavity, and the medium is used for heat dissipation of the motor, so that the motor can be operated on land or underwater.

[0017] 2. The water isolation cover is added in the utility model, and no hole cavity or other difficult-to-process structural features are added to the original basic structure (the motor shell and the impeller shell), so that the whole is easy to process and manufacture, the sealing and waterproof effect is easy to realize, the water isolation cover and the communication pipe are easier to process and operate compared with the basic structure with more structural features and thicker material, and the cost can be controlled to a certain extent.

[0018] 3. One section of the communication pipe between the cooling cavity and the water inlet pipe and the water outlet pipe is a hose, which can offset the mechanical wear caused by mechanical vibration on the two ends of the hard pipe arranged in suspension, guarantee the sealing effect, prolong the service life, and the hard pipe occupying the main length can guarantee the main shape of the communication pipe and prevent the long hose from being entangled or hooked with external objects; in addition, the hose provides a spacing space for assembly of other parts, so that the hard pipe and other parts are easy to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a cross-sectional structure schematic view of the utility model.

[0020] In the drawing: 11, motor shell; 12, end cover; 13, motor rotor; 14, water isolation cover; 15, cooling cavity; 16, interface cover; 21, impeller shell; 22, impeller; 23, water inlet pipe; 24, water outlet pipe; 25, water inlet cover; 31, foot support; 41, water outlet hard pipe; 42, water outlet hose; 43, water inlet hard pipe; 44, water inlet hose. DETAILED DESCRIPTION

[0021] Hereinafter, the utility model will be further described in conjunction with the drawings and specific embodiments, it is to be noted that, in the case of no conflict, the following described embodiments or between the technical features can be arbitrarily combined to form a new embodiment.

[0022] In the description of the utility model, it needs to be explained that, for the direction words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0023] In addition, if the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first" and "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "several" is two or more than two, unless otherwise explicitly specified and limited.

[0024] In the utility model, unless otherwise explicitly specified and limited, the terms "set", "install" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, it can be directly connected, or it can be connected through an intermediate medium, it can be connected between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Referring to Figure 1 A amphibious sewage pump, including motor shell 11, the impeller shell 21 that is arranged at the lower end of the motor shell 11 and the foot support 31 that is arranged at the lower end of the impeller shell 21, the motor shell 11 includes the pipe body with upper and lower ends open and the interface cover 16 that sets up the pipe body upper end and seals the pipe body, the end cover 12 is arranged at the outer periphery of the interface cover 16, the lower end of the pipe body respectively, the end cover 12 below closes the lower end of the pipe body, the impeller shell 21 is arranged at the lower end of the end cover 12 below.

[0026] A motor rotor 13 with a longitudinally arranged shaft is rotatably connected inside the motor housing 11; an impeller 22 with a longitudinally arranged shaft is rotatably connected inside the impeller housing 21; the lower end of the motor rotor 13 passes through the end cover 12 and the impeller housing 21 in sequence; the impeller 22 is located at the center of the lower end of the motor rotor 13.

[0027] A water isolation cover 14 with openings at both the top and bottom is provided between the two end caps 12; an annular groove is provided at the end of the end cap 12 facing the motor housing 11 along the outer periphery; the two ends of the water isolation cover 14 are respectively located in the adjacent annular groove; a sealing ring is provided at the bottom of the annular groove; the water isolation cover 14 abuts against the corresponding sealing ring; a gap is formed between the water isolation cover 14 and the pipe body to form a cooling cavity 15.

[0028] The upper end of the interface cover 16 is provided with multiple process interfaces (external lines, lifting lugs, vent valves, etc.); the middle of the upper end cover 12 is provided with a through opening; the process interfaces protrude from the through opening.

[0029] The impeller housing 21 has a detachable outlet pipe 24 connected to its side wall; the lower end of the impeller housing 21 is provided with a flange; the flange is detachably connected to an inlet cover 25; the lower end of the flange is detachably connected to an inlet pipe 23; the inlet pipe 23 is a bent pipe with a 90-degree bend; the bent pipe is located inside the base bracket 31.

[0030] A connecting pipe is provided between the end of the inlet pipe 23 and the upper end of the cooling chamber 15, and between the side of the impeller housing 21 near the outlet pipe 24 and the lower end of the cooling chamber 15; the connecting pipe includes two rigid pipes and a flexible hose disposed between the two rigid pipes for connecting the two rigid pipes; that is, as Figure 1 The diagram shows an outlet rigid pipe 41 and an outlet flexible pipe 42, an inlet rigid pipe 43 and an inlet flexible pipe 44. Both ends of the flexible pipes are threadedly connected to the adjacent rigid pipes.

[0031] Working process: The motor rotor 13 drives the impeller 22 to rotate. Water in the impeller housing 21 flows out through the outlet pipe 24 under centrifugal force, while water in the inlet pipe 23 flows in under negative pressure. The medium passing through the outlet pipe 24 enters the cooling chamber 15 sequentially through the inlet hard pipe 43, the inlet soft pipe 44, and the inlet hard pipe 43 to dissipate heat from the motor housing 11. Subsequently, water in the cooling hole 15 enters the inlet pipe 23 sequentially through the outlet hard pipe 41, the outlet soft pipe 42, and the outlet hard pipe 41, forming a circulating cooling system.

[0032] The above merely describes specific embodiments of the present application, but the technical features of the present application are not limited thereto, and any person skilled in the art can make changes or modifications in the field of the present application, and the changes or modifications are covered in the patent range of the present application.

Claims

1. An amphibious sewage pump characterized by: The motor shell and two end covers arranged at both ends of the motor shell; the water isolation cover is arranged between the two end covers; the gap between the water isolation cover and the motor shell forms a cooling cavity; wherein the inlet pipe and outlet pipe of the sewage pump are respectively provided with a communication pipe between the cooling cavity; the communication pipe includes two hard pipes and a soft pipe arranged between the two hard pipes for connecting the two hard pipes.

2. The sewage pump of claim 1, wherein: The end cover is provided with an annular groove along the outer contour at one end of the motor shell; the two ends of the water isolation cover are located in the adjacent annular grooves; the inner bottom of the annular groove is provided with a sealing ring; the water isolation cover abuts against the corresponding sealing ring.

3. A sewage pump according to any one of claims 1-2, characterized in that: The motor shell includes a pipe body with openings at both ends and an interface cover arranged at one end of the pipe body to seal the pipe body; one of the two end covers is arranged on the interface cover, and the other is arranged at the other end of the pipe body and seals the pipe body.

4. The sewage pump of claim 3, wherein: A plurality of process interfaces are arranged on the interface cover; the middle part of the end cover close to the process interface is provided with a through hole; the process interface passes out of the through hole.

5. The sewage pump of claim 4, wherein: The end cover away from the process interface is provided with an impeller shell; the impeller shell is provided with a foot support away from one end of the motor shell.

6. The sewage pump of claim 5, wherein: The outlet pipe is detachably connected to the side wall of the impeller shell; the inlet pipe is detachably connected to one end of the impeller shell away from the end cover; the inlet pipe is a ninety-degree bent pipe; the bent pipe is located in the foot support.

7. The sewage pump of claim 5, wherein: The communication pipe connected with the inlet pipe is communicated with the end of the inlet pipe, and the other end is communicated with the end of the cooling cavity away from the impeller shell; the communication pipe connected with the outlet pipe is communicated with one side of the impeller shell close to the outlet pipe, and the other end is communicated with one end of the cooling cavity close to the impeller shell.

8. The sewage pump of any one of claims 1-2, wherein: The two ends of the soft pipe are threadedly connected with the adjacent hard pipes.

9. The sewage pump of claim 5, wherein: The motor rotor is rotatably connected in the motor shell; the impeller is rotatably connected in the impeller shell; the impeller is coaxially arranged at one end of the motor rotor.

10. The sewage pump of claim 3, wherein: The two ends of the soft pipe are threadedly connected with the adjacent hard pipes. The motor rotor is rotatably connected in the motor shell; the impeller is rotatably connected in the impeller shell; the impeller is coaxially arranged at one end of the motor rotor.

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