Water flow self-driven rotary filter element pre-filter

Abstract

The utility model discloses a water flow self-driven rotary filter element pre-filter, which comprises a main body with a cavity and a filter element arranged in the cavity, a sleeve is coaxially sleeved outside the filter element, bristles used for contacting with the surface of the filter element are arranged on the inner side of the sleeve, a connecting piece is arranged at the bottom of the cavity, and the connecting piece is connected with the main body through a connecting rod. And the bottom of the sleeve is in point contact with the top of the connecting piece. The combined type of the sleeve and the impeller is adopted, the sleeve can continuously rotate relative to the filter element under the action of continuous water flow of the water supply pipeline, self-driving during water supply is achieved, the bristles are arranged in the sleeve, impurities attached to the surface of the filter element can be brushed away through the action of the bristles on the surface of the filter element in the continuous rotating process, and the water supply efficiency is improved. The self-cleaning of the filter element during water supply is realized, so that the impurity covering degree and speed on the surface of the filter element can be effectively reduced, the single service life of the filter element is effectively prolonged, and the maintenance frequency and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of filters and relates to a water flow self-driven rotating filter element pre-filter. Background Art

[0002] Water purification filters are commonly used devices in a variety of water supply equipment. They eliminate impurities in the water through the internal filter element to achieve the effect of purifying the water.

[0003] Most of the existing water purification filters are a fixed combination of a detachable outer shell structure and an internal filter element. When setting up, the filter element is set in the outer shell, and the outer shell is connected to the water supply pipeline to form a water flow filter element to absorb and filter out impurities. However, since impurities in the water body will continue to adhere to the surface of the filter element, irregular use will completely cover the surface of the filter element. When the impurity content in the water body is high, this process will be particularly accelerated. The fixed combination structure of existing products makes the single-time life of the filter element generally short, and the outer shell needs to be frequently disassembled and assembled to remove the filter element for cleaning or replacement, resulting in high maintenance costs. In addition, in some special water supply equipment pipelines, the equipment may need to be shut down before disassembly due to reasons such as excessive water pressure, which will bring further trouble to maintenance work. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a water flow self-driven rotating filter element pre-filter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A water flow self-driven rotating filter element pre-filter comprises a main body with a cavity and a filter element arranged in the cavity, a sleeve is coaxially sleeved outside the filter element, bristles for contacting the surface of the filter element are arranged on the inner side of the sleeve, a connecting piece is arranged at the bottom of the cavity, and the bottom of the sleeve is in point contact with the top of the connecting piece; an opening connected to the cavity is formed on the main body, and the opening is separated by the filter element to form a water inlet and a water outlet, an upper impeller is arranged on the sleeve, and a plurality of blades are arranged along the circumference of the upper impeller, and the blades are arranged toward the water inlet.

[0007] Furthermore, it also includes a pipe joint, on which a raw water pipe, a clean water pipe and a connecting port are respectively provided, the opening of the main body is connected to the connecting port, the raw water pipe is connected to the water inlet, and the clean water pipe is connected to the water outlet.

[0008] Furthermore, a water distributor is provided on the outer ring of the filter element, and the water distributor is fixedly connected to the main body. A channel is provided on the water distributor along the axial direction of the cavity, and one end of the channel facing outside the cavity is provided as the water inlet, and the top of the filter element is provided as an opening to form the water outlet.

[0009] Furthermore, the blade includes a straight surface and an inclined surface, the straight surface and the inclined surface are connected to form a set angle, and one side of the channel opens toward the straight surface.

[0010] Furthermore, a slot is provided on the inner circumference of the sleeve, the slot is arranged along the axial direction of the sleeve, an inserting strip is inserted into the slot, and the bristles are arranged on the inserting strip.

[0011] Furthermore, a convex point is arranged on the top of the connecting piece, and a concave pit for abutting against the convex point is arranged on the bottom of the sleeve.

[0012] Furthermore, the connecting piece is passed through the bottom of the main body, the outer periphery of the connecting piece forms a cylindrical surface, the outer periphery of the cylindrical surface is sleeved with a sealing ring, and the inner periphery of the main body is provided with an annular groove for accommodating the sealing ring.

[0013] Furthermore, a lower impeller is also provided at the bottom of the sleeve.

[0014] Furthermore, a drain valve is provided at the bottom of the main body.

[0015] In summary, the utility model is beneficial in that:

[0016] The utility model adopts a combination of a sleeve and an impeller, and under the action of continuous water flow in the water supply pipeline, the sleeve can be continuously rotated relative to the filter element, thereby realizing self-drive during water supply. By arranging bristles in the sleeve, the bristles can act on the surface of the filter element during continuous rotation to brush away impurities attached to the surface, thereby realizing self-cleaning of the filter element during water supply, and further effectively reducing the coverage degree and speed of impurities on the surface of the filter element, thereby effectively increasing the single service life of the filter element and reducing the number of maintenance times and maintenance costs; and by arranging a point contact support for the sleeve, the rotational resistance of the sleeve is effectively reduced, thereby making it easier for the water flow to drive it to rotate, thereby enhancing the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the filter of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-section structure in.

[0019] Figure 3 for Figure 2Schematic diagram of the structure of the middle filter element.

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-section structure in.

[0021] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle water distributor part.

[0022] Figure 6 for Figure 3 Schematic diagram of the structure inside the middle sleeve.

[0023] Figure 7 for Figure 3 Schematic diagram of the explosion structure.

[0024] Figure 8 for Figure 2 An enlarged schematic diagram of the connecting part.

[0025] Markings in the figure: 1. main body; 11. cavity; 12. drain valve; 2. pipe joint; 21. raw water pipeline; 22. clean water pipeline; 23. separator; 3. connector; 31. convex point; 32. sealing ring; 4. filter element; 41. water outlet; 5. water distributor; 51. water inlet; 52. channel; 6. sleeve; 61. slot; 62. insert; 63. bristles; 64. pit; 7. upper impeller; 71. blade; 711. straight surface; 712. inclined surface; 8. lower impeller. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0030] The utility model provides a water flow self-driven rotating filter element pre-filter, referring to Figure 1 and Figure 2 , including a main body 1, a connector 3, a water distributor 5, a filter element 4 and a sleeve 6. The filter not only has the basic function of filtering raw water to form purified water, but also includes a self-cleaning function for the filter element 4.

[0031] Specifically, a cavity 11 is formed in the main body 1, and the cavity 11 is a columnar structure for accommodating the filter element 4, sleeve 6, water distributor 5 and other components. The top of the cavity 11 is open, and the filter element 4 is arranged in the cavity 11 along the top opening. Preferably, the filter element 4 is a cylindrical structure, which is coaxially arranged with the cavity 11. A water-permeable structure is formed on the circumference of the filter element 4, including but not limited to a filter screen, a filter membrane, etc. The top of the filter element 4 is open, and the opening is the water outlet 41 of the filter element 4, that is, the filter element 4 in this embodiment has a filtering direction from the outside to the inside.

[0032] The water distributor 5 is an annular structure, arranged around the outer periphery of the filter element 4 and close to the top opening of the filter element 4. The water distributor 5 is fixedly connected to the main body 1. A channel 52 is axially connected on the water distributor 5. The channel 52 has a water inlet 51 at one end close to the water outlet 41 of the filter element 4.

[0033] The main body 1 and the pipe joint 2 are installed by threaded connection, and the top opening of the cavity 11 is connected to the connecting port. Furthermore, a partition 23 is provided in the pipe joint 2, and the partition 23 separates the connecting port into a first opening and a second opening which are not connected to each other, wherein the first opening is connected to the connecting port. The raw water pipeline 21 is connected to the water inlet 51, and the second opening connects the clean water pipeline 22 to the water outlet 41, thereby forming a set passage for the water flow in the filter, that is, raw water enters from the raw water pipeline 21, enters the space between the filter element 4 and the cavity 11 through the water inlet 51, and the raw water enters the interior of the filter element 4 through the filtration of the filter element 4 to form clean water. After the clean water passes through the water outlet 41, it is discharged along the clean water pipeline 22; and when set, the top of the filter element 4 is fixedly connected to the second opening.

[0034] Reference Figure 3 and Figure 4 The sleeve 6 is coaxially sleeved on the outer periphery of the filter element 4 as protection for the outer side of the filter element 4. A plurality of through holes for water flow are opened on the outer peripheral wall of the sleeve 6. The connecting member 3 is fixedly arranged at the bottom of the cavity 11. The top of the connecting member 3 is protruding upward and provided with a supporting convex point 31. The bottom of the sleeve 6 is correspondingly provided with a pit 64. When the filter element 4 and the sleeve 6 are installed in place, the pit 64 cooperates with the supporting convex point 31, so that the sleeve 6 can rotate relative to the filter element 4 with the axis of the filter element 4 as the rotation center, and the point contact between the pit 64 and the supporting convex point 31 can reduce the contact friction as much as possible and reduce the rotation resistance.

[0035] Among them, refer to Figure 8The connecting member 3 is arranged at the bottom of the main body 1 and is detachable from the main body 1. A sealing ring 32 is sleeved on the outer periphery of the connecting member 3 to achieve sealing between the connecting member 3 and the main body 1. Specifically, the connecting member 3 is provided with a flange along the circumferential direction, and the flange abuts against the bottom of the cavity 11 to fix the position of the connecting member 3. The connecting member 3 also includes a columnar portion coaxially penetrated on the main body 1. The outer periphery of the columnar portion is a cylindrical surface structure, which is clearance-matched with the main body 1. The inner periphery of the main body 1 is provided with an annular groove for accommodating the sealing ring 32. When the connecting member 3 is installed, the sealing ring 32 is sleeved on the columnar portion. The outer periphery of the connector 3 is grooved to accommodate the sealing ring 32 in the prior art. The grooves make the structure of the connector 3 complicated. Generally, only cutting processing can meet the structural accuracy and thus the sealing effect, which is costly. When injection molding is used for one-step molding, ovals, cloaks, etc. will appear at the grooves, affecting the sealing effect. In this embodiment, the columnar portion with a smooth surface cooperates with the structure of the annular groove, which simplifies the processing structure of the connector 3 while ensuring the sealing effect of the sealing ring 32. The columnar portion with a smooth surface has a high yield after injection molding, and injection molding, which is an effective processing and production method that reduces costs, can be used.

[0036] Reference Figure 5 and Figure 7 The outer circumference of the sleeve 6 is sleeved with an upper impeller 7, and the upper impeller 7 is fixed to the sleeve 6. A plurality of blades 71 are evenly distributed along the circumferential direction on the upper impeller 7, and the blades 71 include a connected straight surface 711 and an inclined surface 712, and the straight surface 711 and the inclined surface 712 form an angle. In this embodiment, the angle is preferably an obtuse angle, wherein the opening on the other side of the channel 52 relative to the water inlet 51 is arranged toward the angle, preferably, it is arranged toward the straight surface 711, and water flows into and passes through the channel 52 from the water inlet 51, and the channel 52 guides the direction of the water flow, so that the water flow collides with the straight surface 711, and then the water flow is reflected along the angle to the inclined surface 712, further increasing the impact force and flowing downward, and the impact of the water flow on the blades 71 can drive the rotation of the upper impeller 7 and the sleeve 6, and then when raw water continues to enter the filter, the sleeve 6 can maintain continuous rotation.

[0037] Furthermore, bristles 63 are provided on the inner periphery of the sleeve 6, and the ends of the bristles 63 are oriented toward and in contact with the outer surface of the filter element 4. When the sleeve 6 rotates, the bristles 63 are driven to brush the surface of the filter element 4, so that impurities adsorbed on the surface of the filter element 4 fall off, thereby achieving a self-cleaning effect during the operation of the filter and extending the filtering life of the filter element 4.

[0038] A drain valve 12 is also provided at the bottom of the main body 1, and the drain valve 12 is connected to the cavity 11. When the drain valve 12 is opened, impurities in the cavity 11 can be discharged. Moreover, when the filter is synchronously drained when the drain valve 12 is opened, the raw water flow can synchronously drive the rotation of the sleeve 6 and the bristles 63, and be directly discharged through the drain valve 12 to fully remove the impurities.

[0039] Reference Figure 6 A slot 61 is provided on the inner circumference of the sleeve 6. The slot 61 is in a strip-shaped structure, and its length direction is arranged along the axial direction of the sleeve 6. An insert strip 62 is inserted in the slot 61, and the bristles 63 are arranged on the insert strip 62 and distributed along its length direction. The arrangement of the slot 61 and the insert strip 62 makes the bristles 63 detachable from the sleeve 6, which is more convenient for quick installation and cleaning of the bristles 63. In addition, the axial installation direction between the insert strip 62 and the slot 61 forms an angle with the rotation direction of the sleeve 6, so that the bristles 63 will not fall off easily when they are continuously subjected to force, thereby ensuring the firmness of the installation.

[0040] A lower impeller 8 is also provided at the bottom of the sleeve 6 . The lower impeller 8 is driven to rotate by the water flow at the bottom of the cavity 11 , thereby further assisting the rotation of the sleeve 6 .

[0041] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A water flow self-driven rotating filter element pre-filter, characterized in that: The invention comprises a main body (1) having a cavity (11) and a filter element (4) arranged in the cavity (11); a sleeve (6) is coaxially sleeved outside the filter element (4); bristles (63) for contacting the surface of the filter element (4) are arranged on the inner side of the sleeve (6); a connecting piece (3) is arranged at the bottom of the cavity (11); the bottom of the sleeve (6) is in point contact with the top of the connecting piece (3); an opening connected to the cavity (11) is formed on the main body (1); the opening is separated by the filter element (4) to form a water inlet (51) and a water outlet (41); an upper impeller (7) is arranged on the sleeve (6); a plurality of blades (71) are arranged along the circumferential direction of the upper impeller (7); the blades (71) are arranged toward the water inlet (51).

2. A water flow self-driven rotating filter element pre-filter according to claim 1, characterized in that: It also comprises a pipe joint (2), on which a raw water pipe (21), a clean water pipe (22) and a connection port are respectively provided, the opening of the main body (1) is connected to the connection port, the raw water pipe (21) is connected to the water inlet (51), and the clean water pipe (22) is connected to the water outlet (41).

3. A water flow self-driven rotating filter element pre-filter according to claim 2, characterized in that: A water distributor (5) is provided on the outer circumference of the filter element (4), the water distributor (5) is fixedly connected to the main body (1), a channel (52) is provided on the water distributor (5) along the axial direction of the cavity (11), one end of the channel (52) facing the outside of the cavity (11) is provided as the water inlet (51), and the top of the filter element (4) is provided as an opening to form the water outlet (41).

4. A water flow self-driven rotating filter element pre-filter according to claim 3, characterized in that: The blade (71) comprises a straight surface (711) and an inclined surface (712); the straight surface (711) and the inclined surface (712) are connected to form a set angle; one side opening of the channel (52) faces the straight surface (711).

5. The water flow self-driven rotating filter element pre-filter according to claim 1, characterized in that: The inner circumference of the sleeve (6) is provided with a slot (61), the slot (61) is arranged along the axial direction of the sleeve (6), an inserting strip (62) is inserted into the slot (61), and the bristles (63) are arranged on the inserting strip (62).

6. The water flow self-driven rotating filter element pre-filter according to claim 1, characterized in that: The top of the connecting member (3) is provided with a convex point (31), and the bottom of the sleeve (6) is provided with a concave pit (64) for abutting against the convex point (31).

7. The water flow self-driven rotating filter element pre-filter according to claim 1, characterized in that: The connecting piece (3) is inserted through the bottom of the main body (1), the outer periphery of the connecting piece (3) forms a cylindrical surface, the outer periphery of the cylindrical surface is sleeved with a sealing ring (32), and the inner periphery of the main body (1) is provided with an annular groove for accommodating the sealing ring (32).

8. The water flow self-driven rotating filter element pre-filter according to claim 1, characterized in that: A lower impeller (8) is also provided at the bottom of the sleeve (6).

9. The water flow self-driven rotating filter element pre-filter according to claim 1, characterized in that: A sewage valve (12) is provided at the bottom of the main body (1).

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