Anti-clogging sewage filtering device

Abstract

The present invention relates to the field of sewage filtration equipment, in particular to an anti-clogging sewage filtration device, comprising a housing, a drum is installed in the housing, the closed end of the drum is rotatably connected to the housing, and the open end of the drum is rotatably connected to a cover plate, and the cover plate is fixedly sleeved with the housing; a support is arranged in the drum, the support is provided with a partition connected to the inner wall of the drum, and the support is provided with a circular hole along the axis direction of the drum, a slider is spirally connected in the circular hole, and the slider is sleeved with a one-way bearing, and the inner ring of the one-way bearing is matched with a hexagonal guide rod for sliding sleeve. The device redesigns the structure of the drum, partitions the interior of the drum into fan-shaped space and dynamically seals it, and at the same time realizes sewage pressurized filtration and circulating flushing, improves the filtration efficiency of the equipment, and at the same time abandons the traditional motor drive, adopts the solenoid valve to control the water pressure to drive the rotation, and effectively reduces the equipment cost.

Description

Technical Field

[0001] The invention relates to the field of sewage filtering equipment, in particular to an anti-clogging sewage filtering device. Background Art

[0002] The core part of the sewage filtration equipment is the filter element. Once the filter element is blocked, the entire filtration equipment will fail. Therefore, a filtration equipment called drum filtration has appeared on the market. Its working principle is to place a drum with a filter screen on the peripheral wall horizontally and rotate it, and extend the sewage pipe directly from the opening of the drum. A sewage guide groove is set inside the drum and on the sewage pipe, and a spray head is set on the top of the drum. The sewage is discharged into the drum, where water is filtered from the bottom of the drum by gravity, and the residue is intercepted and retained in the drum. As the drum rotates, it moves to the upper part of the sewage guide groove, and then the residue is separated from the drum by spraying and falls into the sewage guide groove to be discharged from the drum. The drum filtration realizes a continuous and self-cleaning sewage filtration process, but its disadvantages are also very obvious. Its gravity filtration method has a low flow rate, resulting in a larger equipment volume and lower filtration efficiency. When the input sewage flow rate is large, it is easy to overflow the drum to cause secondary pollution. Therefore, in order to solve the above problems, an anti-clogging sewage filtration device is proposed. Summary of the invention

[0003] In view of the problem of low filtering efficiency of the rotary drum filtering equipment mentioned above or in the prior art, the present invention is proposed.

[0004] Therefore, an object of the present invention is to provide a sewage filtering device which is resistant to clogging.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-clogging sewage filtering device comprises a casing, a drum is installed in the casing, a closed end of the drum is rotatably connected to the casing, and an open end of the drum is rotatably connected to a cover plate, and the cover plate is fixedly sleeved with the casing; a support member is arranged in the drum, the support member is provided with a partition connected to the inner wall of the drum, and a circular hole is opened in the support member along the axial direction of the drum, a slider is spirally connected in the circular hole, and a one-way bearing is sleeved on the slider, the inner ring of the one-way bearing is matched and slidably sleeved with a hexagonal guide rod, and one end of the guide rod is fixedly sleeved with the cover plate, a rotary joint is connected to the end of the drum away from the cover plate, and the rotary joint is connected to a solenoid valve, the guide rod is sleeved with a spring between the slider and the rotary joint, and a high-pressure interface is arranged on the cover plate at the guide rod, a sewage discharge interface is opened above the high-pressure interface, and a sewage inlet interface is opened below the high-pressure interface.

[0006] As a preferred solution of the anti-clogging sewage filtering device of the present invention, the peripheral wall of the drum includes an outer filter screen and an inner mesh cage, and the support is integrally connected to the circular bottom surface of the drum and the inner wall of the mesh cage.

[0007] As a preferred solution of the anti-clogging sewage filtering device of the present invention, wherein: the two sides of the connection between the partition and the grid cage are rounded, and side strips are provided between the outer edge of the drum opening, the inner edge of the drum opening and the support member, the side strips on the outer edge of the drum opening are expanded outward, and the side strips between the inner edge of the drum opening and the support member are gathered inward, and the side strips are closely attached to the inner side of the cover plate.

[0008] As a preferred solution of the anti-clogging sewage filtering device of the present invention, the diameter of the cover plate is larger than the diameter of the drum, and the edge of the drum is in rolling contact with rollers, the rollers are distributed in a circular array about the drum, and the axes of the rollers are vertically connected to the edge of the cover plate.

[0009] As a preferred solution of the anti-clogging sewage filtering device of the present invention, the partitions are distributed in a ring array with respect to the support member, and the peripheral wall of the support member is located between adjacent partitions in an arc-shaped transition, and the arc is coaxial with the sewage discharge interface.

[0010] As a preferred solution of the anti-clogging sewage filtering device of the present invention, wherein: the inner wall of the circular hole is provided with a spiral strip, and the slider is slidably connected to the spiral strip, and the inner wall of the circular hole is provided with retaining rings at both ends of the spiral strip.

[0011] As a preferred solution of the anti-clogging sewage filtering device of the present invention, wherein: the locking rotation direction of the outer ring of the one-way bearing relative to the inner ring is opposite to the rotation direction of the drum.

[0012] As a preferred solution of the anti-clogging sewage filtering device of the present invention, wherein: the cover plate is provided with a first through hole in the high-pressure interface, and the first through holes are distributed in a ring array with respect to the guide rod.

[0013] As a preferred solution of the anti-clogging sewage filtering device of the present invention, a second through hole is opened on the edge of the sliding block parallel to its axial direction.

[0014] As a preferred solution of the anti-clogging sewage filtering device of the present invention, a spray pipe is arranged on the top of the drum in the box body, and the spray pipe is parallel to the drum, and a drainage port is opened at the bottom edge of the box body.

[0015] The beneficial effects of the anti-clogging sewage filtering device of the present invention are as follows: the device redesigns the structure of the drum, divides the interior of the drum into fan-shaped space partitions and dynamically seals it, while realizing sewage pressurized filtration and circulating flushing, thereby improving the filtering efficiency of the equipment. At the same time, it abandons the traditional motor drive and adopts the solenoid valve to control the water pressure to drive the rotation, thereby effectively reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Schematic diagram of the overall structure of a sewage filtration device to prevent clogging.

[0018] Figure 2 To prevent clogging of sewage filtration device Figure 1 Schematic diagram of the structure from another side perspective.

[0019] Figure 3 Schematic diagram of the structure of the drum of a sewage filtration device to prevent clogging.

[0020] Figure 4 A disassembled diagram of the drum structure of a sewage filtration device to prevent clogging.

[0021] Figure 5 A cross-sectional view of the structure of the drum of a sewage filtration device that is resistant to clogging.

[0022] Figure 6 To prevent clogging of sewage filtration device Figure 5 A is an enlarged view of the structure.

[0023] Figure 7 A cross-sectional view of the structure of the drum of a sewage filtration device to prevent clogging.

[0024] Figure 8 A schematic diagram of the structure of a cover plate of a sewage filtering device to prevent clogging.

[0025] Fig. 9 A cross-sectional view of the structure of the side strips of a sewage filter device to prevent clogging.

[0026] Fig.10 To prevent clogging of sewage filtration device Fig. 9 A magnified view of the structure of B.

[0027] In the figure: 100, box body; 101, drain outlet; 102, spray pipe; 200, drum; 201, support; 202, slider; 203, one-way bearing; 204, guide rod; 205, rotary joint; 206, solenoid valve; 207, spring; 208, side strip; 200a, filter screen; 200b, mesh cage; 201a, partition; 201b, round hole; 201c, spiral strip; 201d, retaining ring; 202a, second through hole; 300, cover plate; 301, high pressure interface; 302, sewage discharge interface; 303, sewage inlet interface; 304, roller; 301a, first through hole. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Example 1, reference Figure 1 to Figure 10 , which is the first embodiment of the present invention, provides an anti-clogging sewage filtering device, which improves the flow rate of the equipment filtration through the structure of boosted filtration, and includes a box body 100, a drum 200 is installed in the box body 100, the closed end of the drum 200 is rotatably connected to the box body 100, and the open end of the drum 200 is rotatably connected to the cover plate 300, and the cover plate 300 is fixedly sleeved with the box body 100; a support member 201 is arranged in the drum 200, and the support member 201 is provided with a partition 201a connected to the inner wall of the drum 200, and the support member 201 is provided with a circular hole 201b along the axial direction of the drum 200, and a spiral is connected in the circular hole 201b The slider 202 is sleeved with a one-way bearing 203, the inner ring of the one-way bearing 203 is matched and slidably sleeved with a hexagonal guide rod 204, and one end of the guide rod 204 is fixedly sleeved with the cover plate 300, the end of the drum 200 away from the cover plate 300 is connected with a rotary joint 205, and the rotary joint 205 is connected with a solenoid valve 206, the guide rod 204 is located between the slider 202 and the rotary joint 205 and sleeved with a spring 207, and the cover plate 300 is provided with a high-pressure interface 301 at the guide rod 204, and a sewage discharge interface 302 is provided above the high-pressure interface 301, and a sewage inlet interface 303 is provided below the high-pressure interface 301.

[0030] Specifically, the peripheral wall of the drum 200 includes an outer filter screen 200a and an inner mesh cage 200b, the support 201 is connected to the circular bottom surface of the drum 200 and the inner wall of the mesh cage 200b as a whole, the two sides of the connection between the partition 201a and the mesh cage 200b are processed with arcs, and the outer edge of the opening of the drum 200 and the inner edge of the opening of the drum 200 and the support 201 are provided with side strips 208, the side strips 208 of the outer edge of the opening of the drum 200 are expanded outward, and the side strips 208 between the inner edge of the opening of the drum 200 and the support 201 are gathered inward, and the side strips 208 are closely attached to the inner side of the cover plate 300, and the partitions 201a are distributed in a ring array with respect to the support 201. A spiral strip 201c is provided on the inner wall of the circular hole 201b, and the slider 202 is slidably connected to the spiral strip 201c. A retaining ring 201d is provided on the inner wall of the circular hole 201b at both ends of the spiral strip 201c. The locking rotation direction of the outer ring of the one-way bearing 203 relative to the inner ring is opposite to the rotation direction of the drum 200. The cover plate 300 is provided with a first through hole 301a in the high-pressure interface 301, and the first through holes 301a are distributed in a circular array with respect to the guide rod 204. A second through hole 202a is provided on the edge of the slider 202 parallel to its axial direction. A spray pipe 102 is provided at the top of the drum 200 in the box body 100, and the spray pipe 102 is parallel to the drum 200. A drain outlet 101 is provided at the bottom edge of the box body 100.

[0031] The working principle and advantages of the device are further explained in combination with the existing technology: the existing drum filtering equipment all adopts gravity filtration, and the filtration efficiency is low. If the filtration flow rate needs to be increased, the size of the filter drum needs to be increased, resulting in a larger equipment volume. Moreover, when the input sewage flow rate is large, it is easy to overflow from the open port of the filter drum and cause secondary pollution.

[0032] The present invention mainly provides a drum 200 that allows pressurized sewage input. The drum 200 is made of one-piece injection molding, including a circular bottom, a grid cage 200b and an internal support 201. It has two main technical differences from the existing equipment:

[0033] First, reference Figure 5 , Figure 7 , Fig. 9 and Fig.10In order to improve the filtration efficiency by increasing the pressure when transporting sewage inside the drum 200, it is necessary to solve the problem of the opening of the traditional filter drum port. The present invention firstly improves the structural strength by designing a support member 201 inside the drum 200, so that the structure can be kept stable during the internal pressure change to avoid or reduce structural deformation. Secondly, the edge contour of the support member 201 itself and the connection between the support member 201 and the grid cage 200b are rounded, and side strips 208 are designed along the inner and outer edges. Then, the outer side strips 208 plus the inner side strips 208 cooperate with the end face of the drum 200 to form a special-shaped suction cup structure, so that the open port of the drum 200 slides against the smooth inner wall of the cover plate 300 through the side strips 208 to achieve dynamic sealing, that is, when the drum 200 rotates relative to the cover plate 300, the adjacent The fan-shaped spaces between the partitions 201a are sealed and independent, which facilitates the functional zoning. For example, after being pressurized by a sewage pump, sewage enters one of the fan-shaped spaces through the sewage inlet interface 303 for filtration. As the drum 200 rotates, the flushed fan-shaped space portion is rotated to the sewage inlet interface 303, and the fan-shaped space portion whose mesh is full of residues after a period of filtration is rotated to the spray pipe 102 for flushing. The flushed residue flows out from the sewage outlet interface 302. Since the water consumption of high-pressure flushing is much lower than the filtration flow of the drum 200, the equipment can operate efficiently. Through the dynamic sealing effect of the sealing strip, each fan-shaped space rotated to the sewage inlet interface 303 can be filtered at a higher pressure, thereby preventing sewage from overflowing from between the drum 200 and the cover plate 300 to cause secondary pollution.

[0034] Second, reference Figure 4 , Figure 5 and Figure 6 The rotary power source of the drum 200 of the present invention cancels the traditional motor drive mode and adopts the form of water drive. Since the flushing and sewage discharge of the drum 200 itself requires a high-pressure water source to provide clean water (the water filtered by the drum 200 can be directly used), it is further utilized and the water pressure is introduced through the high-pressure interface 301 on the cover plate 300. The pressure of the water pressure is greater than the pressure of the sewage pump. Therefore, the clean water will be squeezed out through the edge strip 208 and the cover plate 300. The positive pressure inside the edge strip 208 will keep the fitting surface of the edge strip 208 clean and reduce the friction loss between the edge strip 208 and the cover plate 300. Secondly, the water pressure enters the circular hole 201b and acts on the slider 202. The solenoid valve 206 repeatedly opens and closes at a set frequency. When the solenoid valve 206 is opened, the pressure difference on both sides of the slider 202 will cause it to be pushed by the water pressure along the guide rod 204 to Figure 5Taking the right side perspective as an example, the inner ring of the one-way bearing 203 can only move axially along the circular hole 201b and cannot rotate due to the hexagonal guide rod 204. The outer ring of the one-way bearing 203 rotates clockwise relative to the inner ring to lock. The one-way bearing 203 and the slider 202 are pushed toward the electromagnetic valve 206 along the guide rod 204 (while compressing the spring 207). The drum 200 can be pushed to rotate through the spiral strip 201c with a larger pitch. When the electromagnetic valve 206 is closed, due to the existence of the second through hole 202a on the slider 202, the water pressure on both sides of the slider 202 quickly becomes equal. At this time, the spring 207 is able to push the slider 202 to reset. Due to the presence of the one-way bearing 203, when the slider 202 stops, resets, or moves slowly toward the solenoid valve 206, the drum 200 can continue to rotate counterclockwise under the action of inertia. When it is smoothly reset and the speed of the drum 200 is reduced to a certain speed, the solenoid valve 206 opens again, so that a pressure difference is generated on both sides of the slider 202 again to repeat the above process. Since the device does not require the drum 200 to strictly rotate at a uniform speed, and the friction caused by the dynamic sealing design between the drum 200 and the cover plate 300 is very small (water film lubrication), the water drive and solenoid valve 206 control method is adopted, which obviously saves equipment costs compared to motor drive.

[0035] In summary, the device redesigns the structure of the drum 200, divides the interior of the drum 200 into fan-shaped space partitions and dynamically seals it, while achieving sewage pressurized filtration and circulating flushing, thereby improving the filtration efficiency of the equipment. At the same time, it abandons the traditional motor drive and adopts the solenoid valve 206 to control the water pressure to drive the rotation, effectively reducing the equipment cost.

[0036] Example 2, reference Figure 3 and Figure 5 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a roller 304 of an anti-clogging sewage filtering device to assist in stabilizing the rotation of the drum 200. It includes: the diameter of the cover plate 300 is larger than the diameter of the drum 200, and the edge of the drum 200 is in rolling contact with the roller 304, the rollers 304 are distributed in a circular array about the drum 200, and the axes of the rollers 304 are vertically connected to the edge of the cover plate 300.

[0037] refer to Figure 5 and Figure 8 Since only one end of the drum 200 is rotatably connected to the side plate of the box body 100, and the other end needs to rotate in contact with the cover plate 300, the rotation stability is poor. In order to solve this problem, a plurality of small C-shaped slots are provided on the edge of the cover plate 300. The shaft of the roller 304 is directly pressed into the slot, and the rotation of the drum 200 is supported by the roller 304 to reduce the deflection and vibration of the drum 200. If the roller 304 is worn, it can be directly removed from the slot and replaced with a new one.

[0038] In summary, by arranging the roller 304 around the cover plate 300 to assist the rotation of the drum 200, the stability of the equipment operation is greatly improved at a relatively low cost.

[0039] Example 3, reference Figure 5 , Figure 7 and Figure 8 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a sewage discharge structure design for an anti-clogging sewage filtering device, which includes: the peripheral wall of the support member 201 is located between adjacent partitions 201a and has an arc-shaped transition, and the arc is coaxial with the sewage discharge interface 302.

[0040] The two adjacent partitions 201a of the device form a V-shaped angle, and the connection is made into an arc treatment, so that the residue washed off the filter 200a by the spray pipe 102 falls directly between the two partitions 201a and is discharged through the sewage discharge interface 302 connected with the arc bottom. The arc bottom is easier to discharge residues than the V bottom and is easy to connect with the conventional circular sewage discharge interface 302 to avoid leakage.

[0041] The rest of the structure is the same as that of Example 2.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sewage filtering device that prevents clogging, comprising a housing (100), characterized in that: A rotating drum (200) is installed in the box (100), a closed end of the rotating drum (200) is rotatably connected to the box (100), and an open end of the rotating drum (200) is rotatably connected to a cover plate (300), and the cover plate (300) is fixedly sleeved with the box (100); A support member (201) is provided in the rotating drum (200), the support member (201) is provided with a partition (201a) connected to the inner wall of the rotating drum (200), and a circular hole (201b) is opened in the supporting member (201) along the axial direction of the rotating drum (200), a slider (202) is spirally connected in the circular hole (201b), and the slider (202) is sleeved with a one-way bearing (203), the inner ring of the one-way bearing (203) is matched with a hexagonal guide rod (204) in a sliding sleeve, and one end of the guide rod (204) is connected to the cover plate (300). ) are fixedly sleeved, one end of the drum (200) away from the cover plate (300) is connected to a rotary joint (205), and the rotary joint (205) is connected to a solenoid valve (206), the guide rod (204) is sleeved with a spring (207) between the slider (202) and the rotary joint (205), and the cover plate (300) is provided with a high-pressure interface (301) at the guide rod (204), a sewage discharge interface (302) is provided above the high-pressure interface (301), and a sewage inlet interface (303) is provided below the high-pressure interface (301); The peripheral wall of the rotating drum (200) comprises an outer filter screen (200a) and an inner mesh cage (200b), and the support member (201) is integrally connected to the circular bottom surface of the rotating drum (200) and the inner wall of the mesh cage (200b); The two sides of the connection between the partition plate (201a) and the grid cage (200b) are rounded, and side strips (208) are provided at the outer edge of the opening of the drum (200) and between the inner edge of the opening of the drum (200) and the support member (201). The side strips (208) at the outer edge of the opening of the drum (200) are expanded outwards, and the side strips (208) between the inner edge of the opening of the drum (200) and the support member (201) are gathered inwards, and the side strips (208) are closely attached to the inner side surface of the cover plate (300); The inner wall of the circular hole (201b) is provided with a spiral strip (201c), and the sliding block (202) is slidably connected to the spiral strip (201c), and retaining rings (201d) are provided on the inner wall of the circular hole (201b) at both ends of the spiral strip (201c).

2. The anti-clogging sewage filtering device according to claim 1, characterized in that: The diameter of the cover plate (300) is greater than the diameter of the rotating drum (200), and the edge of the rotating drum (200) is in rolling contact with rollers (304), the rollers (304) are distributed in a ring array with respect to the rotating drum (200), and the axes of the rollers (304) are vertically connected to the edge of the cover plate (300).

3. The anti-clogging sewage filtering device according to claim 2, characterized in that: The partitions (201a) are distributed in a ring array with respect to the support member (201), and the peripheral wall of the support member (201) is located between adjacent partitions (201a) and transitions in an arc shape, and the arc is coaxial with the sewage discharge interface (302).

4. The anti-clogging sewage filtering device according to claim 3, characterized in that: The locking rotation direction of the outer ring of the one-way bearing (203) relative to the inner ring is opposite to the rotation direction of the rotating drum (200).

5. The anti-clogging sewage filtering device according to claim 4, characterized in that: The cover plate (300) is provided with first through holes (301a) located in the high-pressure interface (301), and the first through holes (301a) are distributed in a ring array with respect to the guide rod (204).

6. The anti-clogging sewage filtering device according to claim 5, characterized in that: A second through hole (202a) is provided on the edge of the sliding block (202) parallel to its axial direction.

7. The anti-clogging sewage filtering device according to claim 6, characterized in that: A spray pipe (102) is provided at the top of the rotating drum (200) in the box (100), and the spray pipe (102) is parallel to the rotating drum (200). A drainage port (101) is provided at the bottom edge of the box (100).

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