A filter head for filter tank with flexible adjustment

Abstract

This utility model discloses a flexibly adjustable filter head for a filter bed, relating to the technical field of filter bed devices. It includes a filter plate with an installation through hole; an adjusting sleeve passing through the installation through hole; a movable tube located above the filter plate, one end of which is connected to the upper end of the adjusting sleeve via a first universal joint, and the other end connected to a filter cap via a second universal joint. The vertical height of the filter cap is adjusted via the first universal joint, and the deflection angle of the filter cap is adjusted via the second universal joint. This utility model, through the cooperation of the first and second universal joints, can independently or collaboratively adjust the vertical height and deflection angle of the filter cap. Addressing issues such as differences in clogging levels in different areas of the filter bed and errors in the flatness of the filter plate installation, it precisely adjusts the spray direction and instantaneous impact force of the backwash water, avoiding insufficient or excessive rinsing in certain areas, and improving the uniformity and thoroughness of filter layer cleaning.

Description

Technical Field

[0001] This utility model relates to the technical field of filter bed devices, specifically a filter head for filter beds that can be flexibly adjusted. Background Technology

[0002] As a crucial component of water treatment processes, the filtration and backwashing effects of filters directly impact effluent quality and operational energy consumption. During backwashing, the filter head, acting as a water and air distribution element, plays a vital role in evenly distributing the backwash media and removing impurities trapped in the filter layer. Existing filter heads are typically fixedly installed on filter plates, with their outlet direction and height determined after installation. Backwash water is sprayed upwards through the filter head, creating a scouring effect on the upper filter media layer to restore its filtration capacity. Under normal water quality conditions and fixed operating conditions, this structural design can generally meet the basic requirements for filter cleaning, ensuring the periodic operation of the filter system.

[0003] Currently, in actual operation, due to differences in the degree of clogging in different areas of the filter bed, or flatness errors in the installation of filter plates, fixed filter heads cannot adapt to changes in local operating conditions. This leads to uneven distribution of backwash water flow, with some areas experiencing insufficient backwashing intensity and residual impurities, while other areas may suffer from excessive rinsing, resulting in filter media loss or energy waste. Especially when the filter bed area is large or the operating load fluctuates, existing filter heads cannot flexibly adjust the outlet orientation and height, limiting the precise control of the instantaneous impact force of backwashing, affecting the overall cleaning effect and operational stability, and hindering further improvement in filter bed treatment efficiency and energy consumption optimization. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a filter head for filter beds that can be flexibly adjusted.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A flexibly adjustable filter head for a filter bed, including

[0007] The filter plate has mounting through holes.

[0008] An adjusting sleeve is inserted into the mounting through hole, with its top end extending out of the upper surface of the filter plate and its bottom end extending into the backwash water.

[0009] A movable tube is located above the filter plate. One end of the movable tube is connected to the upper end of the adjusting sleeve through a first universal joint, and the other end is connected to a filter cap through a second universal joint.

[0010] The vertical height of the filter cap is adjusted by the first universal joint, and the deflection angle of the filter cap is adjusted by the second universal joint, thereby independently or collaboratively adjusting the height and orientation of the filter cap outlet relative to the filter plate surface, and adjusting the instantaneous impact force of the backwash water.

[0011] Preferably, the adjusting sleeve includes an L-shaped tube that is directly connected to the filter plate and a contact tube that extends into the backwash water. The bottom end of the L-shaped tube and the top end of the contact tube are sealed with a corrugated pipe. A sliding element is provided at the top end of the contact tube, and the sliding element extends through the surface of the filter plate to adjust the position of the bottom end of the contact tube.

[0012] Preferably, the first universal joint includes a first ball seat and a first hollow ball head movably embedded in the first ball seat. The first ball seat is fixedly connected to an L-shaped tube, and the first hollow ball head is fixedly connected to one end of a movable tube. The outer surface of the first hollow ball head is covered with a layer of rubber sealing gasket.

[0013] Preferably, the second universal joint includes a second ball seat and a second hollow ball head movably embedded in the second ball seat. The second ball seat is fixedly connected to the other end of the movable tube, the second hollow ball head is fixedly connected to the filter cap, and the outer surface of the second hollow ball head is covered with a layer of rubber sealing gasket.

[0014] Preferably, a sealing element is provided between the adjusting sleeve and the mounting through hole. The sealing assembly includes a rubber sealing ring sleeved on the outside of the L-shaped tube and a pressure ring that presses the rubber sealing ring. The pressure ring is fixed to the inner wall of the mounting through hole by a threaded connection or a snap-fit ​​method.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, through the cooperation of the first universal joint and the second universal joint, can independently or collaboratively adjust the vertical height and deflection angle of the filter cap. It can precisely adjust the spray direction and instantaneous impact force of the backwash water to address issues such as differences in the degree of clogging in different areas of the filter bed and errors in the flatness of the filter plate installation, thereby avoiding insufficient or excessive rinsing in certain areas and improving the uniformity and thoroughness of the filter layer cleaning.

[0017] 2. The design of the corrugated pipe and sliding parts in this utility model allows the adjusting sleeve to flexibly adjust the depth of the contact pipe in the backwash water. Combined with the angle adjustment function of the universal joint, it can adapt to complex working conditions such as large filter area and fluctuating operating load, effectively cope with the backwashing needs of different water quality and different operating stages, and ensure the long-term stable operation of the filter. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a schematic diagram of the structure of a flexibly adjustable filter head for a filter bed according to the present invention;

[0020] Figure 2 For the present utility model Figure 1 Enlarged view of region A;

[0021] Figure 3 For the present utility model Figure 1 Top view.

[0022] The diagram shows the following labels: 1. Filter plate; 2. Mounting through hole; 3. Movable tube; 4. Filter cap; 5. L-shaped tube; 6. Contact tube; 7. Bellows; 8. First ball seat; 9. First hollow ball head; 10. Second ball seat; 11. Second hollow ball head; 12. Rubber sealing ring; 13. Pressure ring. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Example

[0025] like Figure 1-3 As shown, a filter head for a filter bed that can be flexibly adjusted includes a filter plate 1. A filter beam is provided on the bottom surface of the filter plate 1. The filter beam extends into the interior of the underground backwash water. A gap is provided between the filter plate 1 and the surface of the backwash water to form an air layer. This air layer can form an air cushion layer in the early stage of backwashing, which enhances the jet pressure of the backwash water and improves the flushing effect.

[0026] The regulating sleeve includes an L-shaped pipe 5 that is directly connected to the filter plate 1 and a contact pipe 6 that extends into the backwash water. The L-shaped pipe 5 is made of UPVC material and injection molded. The angle between the horizontal section and the vertical section is 90°. The length of the vertical section extends 5-8cm beyond the upper surface of the filter plate 1 to ensure the connection space with the movable pipe 3. The contact pipe 6 is made of 304 stainless steel and its bottom end is 20-30cm away from the bottom of the filter tank to avoid sucking in a large amount of impurities deposited at the bottom of the tank.

[0027] The bottom end of the L-shaped tube 5 is sealed to the top end of the contact tube 6 with a corrugated tube 7. The corrugated tube 7 is made of aging-resistant rubber material and has a range of 5-10cm in terms of expansion and contraction, which can adapt to the up and down movement adjustment of the contact tube 6.

[0028] A sliding element is provided at the top of the contact tube 6, which extends through the surface of the filter plate 1 and is used to adjust the position of the bottom end of the contact tube 6. The sliding element is a long bolt, the bottom end of which is connected to the top end of the contact tube 6 and the top end extends out of the surface of the filter plate 1. The long bolt is threadedly connected to the filter plate 1. In actual operation, the distance between its bottom end and the bottom surface of the filter plate 1 can be adjusted by rotating the long bolt, thereby adjusting the distance between the top end of the contact tube 6 and the bottom surface of the filter plate 1, and thus adjusting the horizontal height of the bottom end of the contact tube 6.

[0029] The filter plate 1 has an installation through hole 2. A sealing element is provided between the adjusting sleeve and the installation through hole 2. The diameter of the installation through hole 2 is 2-3mm larger than the outer diameter of the L-shaped tube 5 to reserve space for the installation of the sealing component.

[0030] The sealing assembly includes a rubber sealing ring 12 fitted outside the L-shaped tube 5 and a pressure ring 13 that presses the rubber sealing ring 12. The rubber sealing ring 12 is made of nitrile rubber and has a trapezoidal cross-section, which can produce radial deformation under pressure to enhance the sealing effect.

[0031] The pressure ring 13 is a ring-shaped metal part. The outer ring is provided with threads that match the inner wall of the mounting through hole 2, or it is provided with an elastic snap-fit ​​pressure ring 13. It is fixed to the inner wall of the mounting through hole 2 by thread connection or snap-fit. After installation, the lower surface of the pressure ring 13 is tightly fitted with the rubber sealing ring 12. The clamping force can be adjusted by the degree of thread tightening or the depth of snap-fit, which effectively prevents backwash water from leaking from the gap between the mounting through hole 2 and the L-shaped pipe 5.

[0032] Preferred, such as Figure 1 As shown, the movable tube 3 is located above the filter plate 1 and is made of transparent acrylic material, which makes it easy to observe the internal water flow. One end of the movable tube 3 is connected to the upper end of the adjusting sleeve through the first universal joint. The first universal joint includes a first ball seat 8 and a first hollow ball head 9 that is movably embedded in the first ball seat 8.

[0033] The first ball seat 8 is made of precision-machined brass and has a spherical groove inside. The curvature of the groove matches the first hollow ball head 9. The first ball seat 8 and the L-shaped tube 5 are fixedly connected by threads. The connection is wrapped with PTFE tape to enhance the sealing. The first hollow ball head 9 is also made of brass. The first hollow ball head 9 is fixedly connected to one end of the movable tube 3 by adhesive or clamp. The connection is sealed with waterproof glue.

[0034] The outer surface of the first hollow ball head 9 is covered with a rubber sealing gasket with a thickness of 1-2mm. The surface of the rubber sealing gasket has anti-slip texture. After the angle is adjusted, the position can be fixed by friction, while preventing water leakage.

[0035] The other end of the movable pipe 3 is connected to a filter cap 4 through a second universal joint. The filter cap 4 is made of ABS material injection molding, and the surface is evenly distributed with water outlet holes with a diameter of 1-2mm. The number of water outlet holes is designed to be 30-50 according to the backwash flow requirements. The second universal joint includes a second ball seat 10 and a second hollow ball head 11 that is movably embedded in the second ball seat 10.

[0036] The second ball seat 10 has the same structure as the first ball seat 8 and is fixedly connected to the other end of the movable tube 3 by threads. The second hollow ball head 11 and the filter cap 4 are integrally molded by injection molding to ensure connection strength.

[0037] The second hollow ball head 11 is also covered with a rubber sealing gasket with a thickness of 1-2mm. Its function is the same as that of the sealing gasket of the first hollow ball head 9, which can both ensure the sealing performance and fix the deflection angle of the filter cap 4.

[0038] Preferred, such as Figure 1 As shown, the vertical height of the filter cap 4 is adjusted via the first universal joint, and the deflection angle of the filter cap 4 is adjusted via the second universal joint.

[0039] During adjustment, when the movable tube 3 is lifted upward, the first hollow ball head 9 rotates upward around the lowest point inside the ball seat, causing the movable tube 3 and filter cap 4 to rise as a whole. When the movable tube 3 is pressed downward, the first hollow ball head 9 rotates downward around the highest point inside the first ball seat 8, and the filter cap 4 falls accordingly, down to the lowest point flush with the upper surface of the filter plate 1. This adjustment process does not require disassembling any parts, and after adjustment, the friction between the rubber sealing gasket and the inner wall of the first ball seat 8 can fix the height position of the filter cap 4, avoiding backwash water flow impact that causes position displacement, and ensuring the stability and reliability of vertical height adjustment.

[0040] When the filter media in a certain area of ​​the filter bed is severely clogged, the outlet of the filter cap 4 can be deflected 30-45° toward that area, so that the backwash water can directly rush toward the clogged location. If there is a blind spot for backwashing at the edge of the filter layer, the outlet of the filter cap 4 can be deflected toward the edge to expand the backwash coverage. After the deflection adjustment, the tight fit between the rubber sealing gasket and the inner wall of the second ball seat 10 can fix the deflection angle of the filter cap 4. Even under the condition of backwash water pressure fluctuation, the outlet orientation can be kept stable, ensuring accurate backwashing direction.

[0041] Adjusting the height and orientation of the filter cap 4 outlet relative to the surface of the filter plate 1 can regulate the instantaneous impact force of the backwash water. The instantaneous impact force of the backwash water depends on the water jet speed and direction. This filter head can change the impact force in two ways by adjusting the height and orientation of the filter cap 4 outlet:

[0042] The effect of height adjustment on impact force: According to the principles of fluid mechanics, after the water flows out of the filter cap 4 outlet, its falling speed increases with the increase of the outlet height, and the corresponding instantaneous impact force increases accordingly. For example, when the outlet height of filter cap 4 increases from 5cm to 15cm, the water jet speed increases from 2m / s to 4m / s, and the instantaneous impact force can be doubled, which can effectively flush the compacted filter layer or stubborn impurities. Conversely, reducing the outlet height can reduce the impact force and prevent filter media loss.

[0043] The effect of angle adjustment on impact force: The deflection angle of the filter cap 4 outlet determines the direction of water jet. When the outlet is vertically upward, the water jet impacts the filter layer vertically, and the impact force is concentrated in the area directly above. When the outlet is tilted, the water jet is sprayed along the tilt direction, and the impact force can be dispersed to a larger area or concentrated on a specific side area. For example, when the outlet is deflected by 30°, the water jet impact range is 50% larger than that in the vertical direction. Although the impact force intensity is slightly reduced, it can still clean the impurities on the side of the filter layer and avoid blind spots in the rinsing.

[0044] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A filter head for a filter bed that is flexibly adjustable, characterized in that: include The filter plate has mounting through holes. An adjusting sleeve is inserted into the mounting through hole, with its top end extending out of the upper surface of the filter plate and its bottom end extending into the backwash water. A movable tube is located above the filter plate. One end of the movable tube is connected to the upper end of the adjusting sleeve through a first universal joint, and the other end is connected to a filter cap through a second universal joint. The vertical height of the filter cap is adjusted by the first universal joint, and the deflection angle of the filter cap is adjusted by the second universal joint, thereby independently or collaboratively adjusting the height and orientation of the filter cap outlet relative to the filter plate surface, and adjusting the instantaneous impact force of the backwash water.

2. The adjustable filter head for a filter bed according to claim 1, characterized in that: The adjusting sleeve includes an L-shaped tube that is directly connected to the filter plate and a contact tube that extends into the backwash water. The bottom end of the L-shaped tube and the top end of the contact tube are sealed with a corrugated pipe. A sliding element is provided at the top end of the contact tube, which extends through the surface of the filter plate and is used to adjust the position of the bottom end of the contact tube.

3. The adjustable filter head for a filter bed according to claim 2, characterized in that: The first universal joint includes a first ball seat and a first hollow ball head movably embedded in the first ball seat. The first ball seat is fixedly connected to an L-shaped tube, and the first hollow ball head is fixedly connected to one end of the movable tube. The outer surface of the first hollow ball head is covered with a layer of rubber sealing gasket.

4. The adjustable filter head for a filter bed according to claim 3, characterized in that: The second universal joint includes a second ball seat and a second hollow ball head movably embedded in the second ball seat. The second ball seat is fixedly connected to the other end of the movable tube, and the second hollow ball head is fixedly connected to the filter cap. The outer surface of the second hollow ball head is covered with a layer of rubber sealing gasket.

5. The adjustable filter head for a filter bed according to claim 4, characterized in that: A sealing element is provided between the adjusting sleeve and the mounting through hole. The sealing element includes a rubber sealing ring sleeved on the outside of the L-shaped tube and a pressure ring that presses the rubber sealing ring. The pressure ring is fixed to the inner wall of the mounting through hole by threaded connection or snap-fit.

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