A submersible propulsion assembly for rural sewage treatment system

Abstract

The present invention provides a submersible propeller assembly for a rural sewage treatment system, comprising a guide shaft and a submersible propeller, a rotating sleeve is sleeved on the guide shaft, a rotating pair is connected between the rotating sleeve and the guide shaft, the rotating sleeve can rotate circumferentially around the axis direction of the guide shaft, the front end of the submersible propeller is fixed on the rotating sleeve, the rear end of the submersible propeller has a guide cover, the guide cover covers the impeller of the submersible propeller, the opening of the guide cover forms a water flow outlet, a guide plate is fixed at the opening, the guide surface of the guide plate is perpendicular to the horizontal plane, and forms an angle of 30°-60° with the vertical plane where the axis of the impeller is located, and also includes a box, an isolation net and a fixing part, the fixing part fixes the guide shaft in the box, and the isolation net covers the area where the impeller moves. The beneficial effects of the present invention are simple structure, easy use, can effectively avoid the adhesion and blockage of the surface layer of the filter screen and the deposition of sludge, and improve the efficiency of biochemical reaction.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment equipment, in particular to a submersible propeller assembly for a rural sewage treatment system. Background Art

[0002] The problem of rural domestic sewage treatment is an important issue that benefits the people's livelihood. At present, rural sewage treatment is mainly based on small-scale underground sewage treatment systems, which collect and treat sewage in sections. Because there are many types of rural domestic sewage sources and the water volume is unstable periodically, in order to effectively treat sewage and reduce nitrogen and phosphorus content, fillers and submersible thrusters are added to the biochemical reaction box of the sewage treatment system, which can significantly increase the oxygenation amount, effectively prevent sludge precipitation, and improve the efficiency of biochemical reactions. In actual use, the submersible thruster needs to be covered with a stainless steel net, otherwise the submersible thruster will break the filler during work and enter the subsequent reaction tank, blocking the water pump, solenoid valve, flow meter and other components. However, after using the stainless steel net, due to the fixed submersible thruster and the stable flow of the mixed liquid, some fillers and sludge will gradually adhere to the stainless steel net, which will eventually lead to smaller and smaller plug flow, sludge deposition, affecting the efficiency of biochemical reactions, and even causing the sludge to turn black and the bacteria to die. Therefore, it is extremely necessary to design a submersible thruster for rural sewage treatment system that makes the stainless steel net difficult to adhere, has stable plug flow, and is easy to use and maintain. At present, rural sewage treatment systems are affected by factors such as the type of sewage source and emission standards. Most of them are equipped with submersible thrusters in the biochemical reaction chamber to improve the efficiency of biochemical reactions and the quality of discharged reclaimed water. The optimized design of submersible thrusters has a great impact on the normal operation of the system and subsequent operation and maintenance. Summary of the invention

[0003] The inventive concept of the present invention is to design a submersible propeller assembly that can change its position in a sewage tank by itself. The submersible propeller uniformly disturbs all directions in the tank to achieve the purpose of increasing the oxygenation of sewage, preventing sludge precipitation and improving the efficiency of biochemical reactions, while effectively preventing sludge from adhering to the isolation net, thereby overcoming the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a submersible propeller assembly for a rural sewage treatment system, comprising a guide shaft and a submersible propeller, a rotating sleeve is sleeved on the guide shaft, the rotating sleeve and the guide shaft are connected by a rotating pair, the rotating sleeve can rotate circumferentially around the axis direction of the guide shaft, the front end of the submersible propeller is fixed on the rotating sleeve, the rear end of the submersible propeller has a guide cover, the guide cover covers the impeller of the submersible propeller, the opening of the guide cover forms a water flow outlet, a guide plate is fixed at the opening, the guide surface of the guide plate is perpendicular to the horizontal plane, and forms an angle of 30°-60° with the vertical plane where the axis of the impeller is located;

[0005] It also includes a box body, an isolation net and a fixing member, wherein the fixing member fixes the guide shaft in the box body, and the isolation net covers the area where the impeller moves.

[0006] The above structure is installed in a sewage treatment tank for use. An isolation net is set in the tank to isolate the submersible propeller from other areas in the tank to prevent the impeller from crushing the filler and blocking subsequent pipes and pipe fittings, thereby ensuring the normal operation of the system. Since the guide plate at the water flow outlet of the guide cover on the submersible propeller assembly is perpendicular to the horizontal plane and tilted at a certain angle, the purpose is to make the thrust flow ejected from the impeller give an unbalanced force on both sides of the guide plate, thereby driving the submersible propeller as a whole to make a circular motion around the guide shaft, which can effectively prevent sludge deposition in the tank from all directions, and can also blow and wash the filler sludge attached to the surroundings of the isolation net to keep the isolation net unobstructed.

[0007] Furthermore, a positioning sleeve is sleeved on the guide shaft, the positioning sleeve is located above the rotating sleeve, the positioning sleeve is connected to the guide shaft by a rotating pair, and the positioning sleeve can rotate circumferentially around the axis direction of the guide shaft;

[0008] The submersible propulsion device is provided with a lifting ear, and the lifting ear is connected to the positioning sleeve through a connecting component.

[0009] The arrangement of the positioning sleeve and the connecting parts makes the rotational action more stable.

[0010] Furthermore, the connecting component is a rope, the rotating sleeve can slide up and down along the axial direction of the guide shaft, and the positioning sleeve has an adjusting member that can adjust the length of the rope between the positioning sleeve and the rotating sleeve.

[0011] The length of the wire rope is adjusted by positioning the guide cylinder and the submersible thruster is lowered to a suitable height.

[0012] Furthermore, a bearing is arranged in the positioning sleeve. Since the bearing is installed in the positioning sleeve, a rotation pair connection with the guide shaft can be realized, and when the submersible thruster performs a circular motion, the rope connected between the lifting ear and the positioning sleeve will also rotate synchronously with the positioning guide cylinder, and the rope will not be entangled on the guide shaft.

[0013] Furthermore, the adjusting member is a hook or a column on which the rope can be wound.

[0014] Furthermore, the rotating sleeve has an internal threaded hole on its side, and an adjusting bolt is arranged in the internal threaded hole, and the end of the adjusting bolt can contact the guide shaft. The connecting sleeve is equipped with an adjusting bolt, and the rotation speed of the entire submersible propulsion device can be controlled by adjusting the bolt to ensure that the biochemical reaction of the system proceeds normally.

[0015] Furthermore, the fixing member includes a base and a bracket, the base is fixed to the bottom of the box body, the lower end of the guide shaft is fixed to the base, the bracket is fixed to the side of the box body, and the upper end of the guide shaft is fixed to the bracket.

[0016] Furthermore, the isolation net is a stainless steel net.

[0017] The advantages and positive effects of the present invention are that the present invention has a simple structure and is easy to use, and can effectively avoid clogging and sludge deposition on the surface of the filter screen, thereby improving the efficiency of the biochemical reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Is a schematic diagram of the overall structure of a specific embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A top view of;

[0020] In the figure: 1-manhole; 2-stainless steel net; 3-bracket; 4-positioning sleeve; 5-guide shaft; 6-adjusting bolt; 7-rotating sleeve; 8-wire rope; 9-lifting ear; 10-diving thruster; 11-deflector cover; 12-impeller; 13-deflector plate; 14-base; 15-box. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] like Figure 1 , 2As shown, the present invention provides a submersible propeller assembly for a rural sewage treatment system, comprising a box body 15, a stainless steel mesh 2, a base 14, a bracket 3, a guide shaft 5 and a submersible propeller 10. A rotating sleeve 7 is sleeved on the guide shaft 5, and the rotating sleeve 7 is connected to the guide shaft 5 by a rotating pair. The side of the rotating sleeve 7 is provided with an internal threaded hole, and an adjusting bolt 6 is provided in the internal threaded hole. The end of the adjusting bolt 6 can contact the guide shaft 5, and the rotating sleeve 7 can rotate circumferentially around the axis direction of the guide shaft 5, and can also slide up and down along the axis direction. The front end of the submersible propeller 10 is fixed on the rotating sleeve 7, and the rear end of the submersible propeller 10 is provided with a guide cover 11, which covers the impeller 12 of the submersible propeller 10. The opening of the guide cover 11 forms a water flow outlet, and a guide plate 13 is fixed at the opening. The guide surface of the guide plate 13 is perpendicular to the horizontal plane and forms an angle of 45° with the vertical plane where the axis of the impeller 12 is located.

[0023] A positioning sleeve 4 is sleeved on the guide shaft 5. The positioning sleeve 4 is located above the rotating sleeve 7. A bearing is arranged inside the positioning sleeve 4. The positioning sleeve 4 is connected to the guide shaft 5 in a rotating pair. The positioning sleeve 4 can rotate circumferentially around the axis of the guide shaft 5.

[0024] The submersible propulsion device 10 is provided with a lifting lug 9, which is connected to the positioning sleeve 4 by a steel wire rope 8. The positioning sleeve 4 is provided with an adjusting member capable of adjusting the length of the steel wire rope 8 between the positioning sleeve 4 and the rotating sleeve 7, and the adjusting member can be a hook or a column for winding the steel wire rope 8.

[0025] The base 14 is fixed to the bottom of the box 15, the lower end of the guide shaft 5 is fixed to the base 14, the bracket 3 is fixed to the side of the box 15, and the upper end of the guide shaft 5 is fixed to the bracket 3. The stainless steel mesh 2 covers the area where the impeller 12 moves.

[0026] The above embodiments of the present invention are described in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A submersible propulsion assembly for a rural sewage treatment system, characterized in that: It comprises a guide shaft and a submersible thruster, wherein a rotating sleeve is sleeved on the guide shaft, the rotating sleeve and the guide shaft are connected in a rotating pair, the rotating sleeve can rotate circumferentially around the axis direction of the guide shaft, the front end of the submersible thruster is fixed on the rotating sleeve, the rear end of the submersible thruster is provided with a guide cover, the guide cover covers the impeller of the submersible thruster, the opening of the guide cover forms a water flow outlet, a guide plate is fixed at the opening, the guide surface of the guide plate is perpendicular to the horizontal plane, and forms an angle of 30°-60° with the vertical plane where the axis of the impeller is located; It also includes a box body, an isolation net and a fixing member, wherein the fixing member fixes the guide shaft in the box body, and the isolation net covers the area where the impeller moves.

2. The submersible propulsion assembly for rural sewage treatment system according to claim 1, characterized in that: A positioning sleeve is sleeved on the guide shaft, the positioning sleeve is located above the rotating sleeve, the positioning sleeve is connected to the guide shaft by a rotating pair, and the positioning sleeve can rotate circumferentially around the axis direction of the guide shaft; The submersible propulsion device is provided with a lifting ear, and the lifting ear is connected to the positioning sleeve through a connecting component.

3. The submersible propulsion device assembly for rural sewage treatment system according to claim 2, characterized in that: The connecting component is a rope, the rotating sleeve can slide up and down along the axial direction of the guide shaft, and the positioning sleeve is provided with an adjusting member which can adjust the length of the rope between the positioning sleeve and the rotating sleeve.

4. The submersible propulsion assembly for rural sewage treatment system according to claim 3, characterized in that: A bearing is arranged in the positioning sleeve.

5. The submersible propulsion assembly for rural sewage treatment system according to claim 4, characterized in that: The adjusting member is a hook or a column on which the rope can be wound.

6. The submersible propulsion assembly for a rural sewage treatment system according to any one of claims 1 to 5, characterized in that: An internal threaded hole is provided on the side surface of the rotating sleeve, and an adjusting bolt is provided in the internal threaded hole. The end of the adjusting bolt can contact with the guide shaft.

7. The submersible propulsion assembly for rural sewage treatment system according to claim 6, characterized in that: The fixing member includes a base and a bracket, wherein the base is fixed to the bottom of the box body, the lower end of the guide shaft is fixed to the base, the bracket is fixed to the side of the box body, and the upper end of the guide shaft is fixed to the bracket.

8. The submersible propulsion assembly for a rural sewage treatment system according to claim 6, characterized in that: The isolation net is a stainless steel net.

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