Vortex type pre-pump filter

Abstract

The invention relates to a vortex type pump front filter which comprises a filter cylinder composed of a filter screen and a cylinder body, a cavity inner cover is arranged in the filter cylinder, one end of the inner cover is fixedly connected with the cylinder body on the corresponding side to form a non-open end, the other end of the inner cover is an open end, a rotatable impeller is arranged in the open end, and the open end is shielded by the impeller; a water outlet pipe is fixedly inserted in the center of the cylinder on the side, the inner end of the water outlet pipe is closed, and a water inlet pipe is arranged between the closed end of the water outlet pipe and the impeller and close to the inner wall of the inner cover and is communicated with the water outlet pipe; a shaft is inserted in the center of the cylinder on the other side, and the inner end of the shaft is connected with the closed end of the water outlet pipe; a gap is reserved between the impeller and the open end of the inner cover, and a cavity is formed between the impeller and the open end of the inner cover. The vortex generated by rotation of the impeller can enhance the flow near the water inlet, so that the adaptability is higher.

Description

Technical Field

[0001] The present application relates to a pre-pump filter, and in particular to a vortex pre-pump filter. Background Art

[0002] The pre-pump filter device is a filter device placed in the water body, which has a water wheel outlet and a filter cartridge, and can filter the water body. After the water wheel outlet is connected to the water pump, while the water pump is pumping water, the water passes through the filter screen wrapped on the side wall of the filter cartridge and is filtered and purified, and then flows into the water pump from the water wheel outlet, which can prevent impurities from entering the water pump. However, the rotation of the filter cartridge is driven by a motor, and the motor power is generally set to a constant state, that is, the speed of the filter cartridge is constant and will not change with the size of the water flow entering the filter cartridge. This type of pre-pump filter device cannot be used in some areas where it is difficult to draw electricity.

[0003] In order to solve the defects of the above-mentioned prior art, the Chinese utility model patent with patent number CN202020811017.6 is a hydraulically driven horizontal pump front self-cleaning filter, including a bracket, a filter cartridge is arranged in the bracket, a drain pipe with one end extending out of the filter cartridge is arranged in the filter cartridge, and the water outlet of the drain pipe is connected to the water inlet of the water pump; a turbine shaft is arranged in the drain pipe, and turbines are installed on the turbine shaft at intervals; bearing assemblies are arranged on both sides of the filter cartridge, one of which is provided with a three-stage driven wheel, and the three-stage driven wheel is fixedly connected to the filter cartridge; one end of the turbine shaft extends from the side wall of the filter cartridge and passes through another bearing assembly, and a driving wheel is installed on the extended end; a transmission shaft is arranged on the bracket crossbeam, and a primary driven wheel and a secondary driven wheel are respectively installed at both ends of the transmission shaft; the primary driven wheel is linked with the driving wheel, and the secondary driven wheel is linked with the third-stage driven wheel. This utility model patent adopts hydraulic drive, and the drum speed can be adjusted automatically according to the size of the water outlet. The filter cartridge can be driven by normal pressure water flow, and the applicability is stronger. However, because the water inlet is opened on the wall of the drain pipe, the drain pipe needs to be located below the water surface when in use. Otherwise, the water pump will not be able to pump water and filter due to insufficient suction force due to the inhalation of air, the water flow will stagnate, and the filter cartridge cannot rotate. The horizontal structure causes the water inlet to be located near the axis of the filter cartridge, which is at a higher position. Therefore, when the water level is low, the water surface cannot exceed the water inlet, making it unusable. At the same time, the extraction of water flow is powered by the water pump. Since the water inlet is far away from the water pump, the flow rate of the water here is relatively low, and the extraction efficiency is lower than that of this application.

[0004] Therefore, some vertical pre-pump filter devices with submersible pumps have emerged. The water inlet of this type of filter device is low, which can meet the pumping operation at low water levels. However, the submersible pump draws water from bottom to top, which requires higher energy consumption.

[0005] Therefore, it is necessary to design a vortex horizontal pump pre-filter that can meet both high water level pumping and filtration and low water level pumping and filtration. Summary of the invention

[0006] The purpose of the present application is to provide a vortex pre-pump filter which can utilize the vortex generated by the rotation of the impeller to concentrate the water flow to the inner wall of the inner cover, so as to facilitate the water flow to enter from the water inlet, regardless of whether the liquid level is high or low.

[0007] The present application is implemented as follows: a vortex pump pre-filter comprises a filter cartridge consisting of a filter screen and a cylinder, a cavity inner cover is arranged in the filter cartridge, one end of the inner cover is fixedly connected to the cylinder on the corresponding side to form a non-open end, and the other end of the inner cover is an open end, a rotatable impeller is arranged in the open end, and the impeller covers the open end; an outlet pipe is fixedly inserted at the center of the cylinder on this side, the inner end of the outlet pipe is closed, and an inlet pipe is arranged between the closed end of the outlet pipe and the impeller, close to the inner wall of the inner cover, and the inlet pipe is connected to the outlet pipe; a shaft is inserted at the center of the cylinder on the other side, and the inner end of the shaft is connected to the closed end of the outlet pipe; a spacing is left between the impeller and the open end of the inner cover, and a cavity is formed between the impeller and the open end of the inner cover.

[0008] The water inlet pipe is L-shaped and comprises a water inlet and a water outlet. The water inlet faces the open end of the inner cover, and the water outlet is communicated with the water outlet pipe.

[0009] A water pipe is arranged in the water outlet pipe, the inner end of which is closed and extends out of the inner cover and is fixedly connected to the shaft; the outer end of the water pipe extends from the wall of the water outlet pipe and is connected to the water outlet of the water supply device.

[0010] In the filter cartridge outside the inner cover, a flushing pipe is arranged parallel to the axis side, and nozzles are distributed on the flushing pipe, and the nozzles face the inner wall of the filter screen. The water inlet of the flushing pipe is connected with the water delivery pipe.

[0011] The impeller is rotatably connected to the shaft through a bearing, and the inner end of the shaft is directly and fixedly connected to the closed end of the water outlet pipe.

[0012] The impeller is rotatably connected to the water pipe through a bearing, the shaft is first fixedly connected to the closed end of the water pipe, the water pipe is plug-connected to the closed end of the outlet pipe, and the shaft is indirectly fixedly connected to the closed end of the outlet pipe.

[0013] The outer circumferential surface of the impeller is fixedly connected to the inner wall of the inner cover.

[0014] The filter cartridge is placed horizontally, and the water inlet pipe is arranged between the water outlet pipe and the lower part of the inner cover, and is lower than the water outlet pipe.

[0015] The filter cartridge is placed vertically, and the water inlet pipe is axially symmetrically distributed between the water outlet pipe and the inner cover.

[0016] Due to the implementation of the above technical solution, the present application sets an inner cover in the net barrel to constrain the water flow within the range of the inner cover, and then stirs the water flow through the impeller to form a vortex, which concentrates the water flow to the inner wall of the inner cover. The water flow finally enters the water outlet pipe from the water inlet pipe located at the bottom of the inner cover, which can improve the pumping efficiency while meeting the low water level pumping. At the same time, the inner wall of the net barrel can be cleaned through the flushing pipe to avoid clogging of the mesh on the net barrel and affecting the water inlet. The present application uses the vortex generated by the rotation of the impeller to enhance the flow near the water inlet, so it is more adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific structure of this application is given by the following drawings and embodiments: Figure 1 It is a structural schematic diagram of the present application when the filter cartridge is horizontal and the impeller is separated from the inner cover; Figure 2 It is a structural schematic diagram of the present application when the filter cartridge is horizontal and the impeller is connected to the inner cover; Figure 3 It is a structural schematic diagram of the connection between the water inlet pipe and the water outlet pipe; Figure 4 It is a schematic diagram of the structure of the present application without flushing pipes and water pipes; Figure 5 It is a structural schematic diagram of the present application when the filter cartridge is in a vertical position; Figure 6 It is a structural diagram of the water inlet pipe distribution when the filter cartridge is vertical.

[0018] Legend: 1. Cylinder, 2. Filter, 3. Flushing pipe, 4. Impeller, 5. Inner cover, 6. First bearing, 7. Water pipe, 8. Water outlet pipe, 9. Water inlet pipe, 10. Shaft, 11. Second bearing, 12. Water inlet, 13. Water outlet, 14. Bracket, 15. Float. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] Example: Figure 1-6 As shown, the vortex pump pre-filter includes a filter cartridge consisting of a filter screen 2 and a cylinder 1, a cavity inner cover 5 is arranged in the filter cartridge, one end of the inner cover 5 is fixedly connected to the cylinder 1 on the corresponding side to form a non-open end, and the other end of the inner cover 5 is an open end, a rotatable impeller 4 is arranged in the open end, an outlet pipe 8 is fixedly inserted at the center of the cylinder 1 on this side, the inner end of the outlet pipe 8 is closed and extends into the inner cover 5, an inlet pipe 9 is arranged between the outlet pipe 5 and the inner cover 5, and the inlet pipe 9 is connected to the outlet pipe 5; a shaft 10 is inserted at the center of the cylinder 1 on the other side, and the inner end of the shaft 10 extends to the opposite cylinder 1 and is fixedly connected to the closed end of the outlet pipe 8.

[0022] Furthermore, the filter cartridge is cylindrical, and includes a circular cylinder 1 located on both sides, and a filter screen 2 is covered along the circumference of the cylinder 1, and water flows into the filter cartridge through the filter screen 2.

[0023] Furthermore, the water inlet pipe 9 is L-shaped, including a water inlet 12 and a water outlet 13. The water inlet 12 faces the open end of the inner cover 5 and is located on the right side of the impeller 4. An opening is opened on the lower side wall of the water outlet pipe 8, and the water outlet 13 is connected to the opening, so that the water inlet pipe 9 is connected to the water outlet pipe 8.

[0024] One end of the filter cartridge is connected to the bracket 14 through the shaft 10 , and the other end is connected to the bracket 14 through the water outlet pipe 8 .

[0025] A first bearing 6 is installed between the water outlet pipe 8 and the cylinder 1 , and a second bearing 11 is installed between the shaft 10 and the cylinder 1 .

[0026] The outer end of the shaft 10 is rotatably connected to a bearing seat fixed on the bracket 14, and the outer side of the water outlet pipe 8 is fixedly connected to the bracket.

[0027] The support 14 includes symmetrically arranged frames, both frames are provided with inner cross beams, and a connecting rod is connected between the two frames. The filter cartridge can rotate in the support.

[0028] Furthermore, there is a gap between the impeller 4 and the open end of the inner cover 5, so that a cavity is formed between the impeller 4 and the open end of the inner cover 5 for the water flow to easily form a vortex. When the impeller 4 rotates, a local vortex will first be formed within this space, and then diffuse to the left and right sides of the impeller 4, so that the water flow in this space and the rear side will be concentrated on the inner wall of the inner cover 5, so that it can be more concentratedly drawn out from the outlet pipe 9.

[0029] The outer end of the outlet pipe 9 is connected to the water inlet of the water pump. When the present application is in use, the present application is placed as a whole in the water flow so that the water surface is higher than the highest point of the water inlet 12 of the inlet pipe 9. After starting the water pump, the water will enter the filter cartridge after being filtered by the filter screen 2 from the outside of the filter cartridge, and flow toward the inner cover 5. When the water flows through the impeller 4, it pushes the impeller 4 to rotate, thereby generating a vortex at the impeller 4. The water flows through the stirring of the impeller 4 and will be concentrated on the side wall of the inner cover 5, and flow from the inlet pipe 9 to the outlet pipe 8. Since the inlet pipe 9 is arranged at the bottom, it can meet the demand for pumping water at a lower water level. When the water level is high, the water flow can be quickly guided to the water inlet 12 of the inlet pipe 9 by the vortex, thereby improving the pumping efficiency.

[0030] Further, such as Figure 1 , 2 As shown in , 3, 5, and 6, a water delivery pipe 8 is arranged in the water outlet pipe 8, the inner end of the water delivery pipe 8 is closed, and the closed end of the water outlet pipe 8 extends out of the inner cover 5 and is fixedly connected to the shaft 10; the outer end of the water delivery pipe 8 extends from the wall of the water outlet pipe 8 to communicate with the water outlet of the water supply device. For example, a tee can be installed at the water outlet of the water pump, one of which is connected to the outer end of the water delivery pipe 8, one is connected to the water outlet of the water pump, and one is connected to the water supply pipeline.

[0031] Further, the impeller 4 is rotatably connected to the water pipe 8 through a bearing. At this time, the shaft 10 is first fixedly connected to the closed end of the water pipe 8, and the water pipe 8 is plugged and connected to the closed end of the outlet pipe 8, and the shaft 10 is indirectly fixedly connected to the closed end of the outlet pipe 8.

[0032] Furthermore, in the filter cartridge outside the inner cover 5, a flushing pipe 3 is arranged parallel to the axis 10 side, and nozzles are distributed on the flushing pipe 3, and the nozzles are directed toward the inner wall of the filter screen 2. The water inlet of the flushing pipe 3 is connected to the pipe wall near the closed end of the water supply pipe 8.

[0033] Further, such as Figure 4 As shown, the water delivery pipe 8 and the flushing pipe are eliminated, and the impeller 4 is rotatably connected to the shaft 10 through a bearing. At this time, the inner end of the shaft 10 is directly and fixedly connected to the closed end of the water outlet pipe 9.

[0034] like Figure 1As shown, the outer circumferential surface of the impeller 4 is not connected to the inner wall of the inner cover 5. When pumping water, the impeller 4 rotates, and the inner cover 5 and the filter cartridge do not rotate. In this structure, the filter screen 2 can be backwashed through the fixed flushing pipe 3 to remove impurities attached thereto and prevent the filter screen from being blocked. However, since the filter cartridge does not rotate, the flushing effect is not good.

[0035] Therefore, the preferred embodiment of the present application is as follows Figure 2 As shown, the outer circumferential surface of the impeller 4 is fixedly connected to the inner wall of the inner cover 5. When pumping water, the impeller 4 drives the inner cover 5 to rotate, thereby driving the filter cartridge to rotate. In this structure, the filter screen 2 can be backwashed through the fixed flushing pipe 3 to remove impurities attached thereto and prevent the filter screen from being blocked.

[0036] Embodiment 1: When the filter cartridge is placed horizontally in the bracket 14, the water inlet pipe 9 is preferably arranged between the water outlet pipe 5 and the lower part of the inner cover 5, and is lower than the water outlet pipe 8. This structure allows the water surface to still be higher than the water inlet pipe 9 and between the water outlet pipe 8 and the water inlet pipe 9 when the water level is at a lower position by arranging the water inlet pipe 9 at a lower position, and the impeller 4 can still stir the water flow to concentrate on the inner wall of the lower side of the inner cover 5, thereby accelerating the water flow velocity at the water inlet 13.

[0037] Embodiment 2: When the filter cartridge is placed vertically in the bracket 14, at least one water inlet pipe 9 is provided, preferably two or three, which are axially symmetrically distributed between the water outlet pipe 5 and the inner cover 5, and the water inlet 12 of the water inlet pipe 9 is not lower than the closed end of the water outlet pipe 8. In this structure, the water level needs to exceed the upper open end of the inner cover 5 to submerge the impeller 4, and must be higher than the water inlet 12 of the water inlet pipe 9. After the impeller 4 rotates, the water flow is concentrated to flow to the water inlet of the water inlet pipe 9, which is conducive to the pumping of water by the water pump.

[0038] The above technical features constitute the embodiments of the present application, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.

Claims

1. A vortex type pre-pump filter, comprising a filter cartridge consisting of a filter screen and a cylinder, characterized in that: A cavity inner cover is arranged in the filter cartridge, one end of the inner cover is fixedly connected to the cylinder on the corresponding side to form a non-open end, and the other end of the inner cover is an open end. A rotatable impeller is arranged in the open end, and the impeller covers the open end; an outlet pipe is fixedly inserted at the center of the cylinder on this side, and the inner end of the outlet pipe is closed. An inlet pipe is arranged between the closed end of the outlet pipe and the impeller, close to the inner wall of the inner cover, and the inlet pipe is connected with the outlet pipe; a shaft is inserted at the center of the cylinder on the other side, and the inner end of the shaft is connected to the closed end of the outlet pipe; a distance is left between the impeller and the open end of the inner cover, and a cavity is formed between the impeller and the open end of the inner cover.

2. The vortex pre-pump filter according to claim 1, characterized in that: The water inlet pipe is L-shaped and comprises a water inlet and a water outlet. The water inlet faces the open end of the inner cover, and the water outlet is communicated with the water outlet pipe.

3. The vortex pre-pump filter according to claim 1 or 2, characterized in that: A water pipe is arranged in the water outlet pipe, the inner end of which is closed and extends out of the inner cover and is fixedly connected to the shaft; the outer end of the water pipe extends from the wall of the water outlet pipe and is connected to the water outlet of the water supply device.

4. The vortex pre-pump filter according to claim 3, characterized in that: In the filter cartridge outside the inner cover, a flushing pipe is arranged parallel to the axis side, and nozzles are distributed on the flushing pipe, and the nozzles face the inner wall of the filter screen. The water inlet of the flushing pipe is connected with the water delivery pipe.

5. The vortex pre-pump filter according to claim 1, characterized in that: The impeller is rotatably connected to the shaft through a bearing, and the inner end of the shaft is directly and fixedly connected to the closed end of the water outlet pipe.

6. The vortex pre-pump filter according to claim 3, characterized in that: The impeller is rotatably connected to the water pipe through a bearing, the shaft is first fixedly connected to the closed end of the water pipe, the water pipe is plug-connected to the closed end of the outlet pipe, and the shaft is indirectly fixedly connected to the closed end of the outlet pipe.

7. The vortex pre-pump filter according to claim 1 or 2 or 4 or 5 or 6, characterized in that: The outer circumferential surface of the impeller is fixedly connected to the inner wall of the inner cover.

8. The vortex pre-pump filter according to any one of claims 1 to 7, characterized in that: The filter cartridge is placed horizontally, and the water inlet pipe is arranged between the water outlet pipe and the lower part of the inner cover, and is lower than the water outlet pipe.

9. The vortex pre-pump filter according to any one of claims 1 to 7, characterized in that: The filter cartridge is placed vertically, and the water inlet pipe is axially symmetrically distributed between the water outlet pipe and the inner cover.

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