A reinforcing device for filter bed of filter tank

Abstract

The application relates to the field of water plant filter equipment and discloses a reinforcing device for a filter plate integrally cast in a filter, which comprises a filter plate, a plurality of filter beams arranged below the filter plate in a horizontal direction and a plurality of embedded pipes arranged on the filter plate in a vertical direction, characterized in that the reinforcing device comprises a lower cross beam movably arranged at the bottom end of the filter beam, reinforcing pull rods symmetrically arranged on the two sides of the lower cross beam and fastening nuts screwedly arranged at the lower ends of the reinforcing pull rods, the reinforcing pull rods are movably arranged through the embedded pipes and the lower cross beam in sequence, the upper end of each reinforcing pull rod is fixedly connected with an upper backing plate, the upper end of each reinforcing pull rod is screwedly connected with a standard filter head, when the upper backing plate abuts against the top end of the filter plate, the fastening nuts located on the two sides of the lower cross beam can push the lower cross beam to abut against the filter beam upwards; the application has the effects of realizing reinforcement of old filter plates without dismounting and rapid construction.

Description

Technical Field

[0001] This invention relates to the field of water plant filter equipment technology, and in particular to a reinforcement device for integral cast filter plates in a filter bed. Background Technology

[0002] Currently, most water treatment plant filter beds in China use monolithic concrete filter plates. The conventional construction process involves pre-embedding reinforcing bars on the filter beams and then casting the entire plate inside, thus achieving a fixed connection between the filter plate and the filter beams. A mortar leveling layer is installed between the bottom of the filter plate and the filter beams for leveling and stress buffering.

[0003] However, existing filter structures have blind spots in operation and maintenance: the working space under the filter plates is narrow, making it impossible for personnel to enter for inspection. Damage to the filter plates can only be checked after water quality exceeds standards or an accident occurs, by emptying the filter media and cleaning the tank walls. Traditional repair methods involve completely dismantling the damaged filter plates and re-casting concrete, which has the problem of long construction periods. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforcement device for integral cast-in-place filter plates in filter beds, which has the effect of enabling the reinforcement of old filter plates without removal and with rapid construction.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: comprising a filter plate, a plurality of filter beams arranged horizontally below the filter plate, and a plurality of pre-embedded pipes arranged vertically through the filter plate. The invention is characterized by: a lower crossbeam movably arranged laterally at the bottom end of the filter beams, reinforcing rods symmetrically arranged on both sides of the lower crossbeam, and fastening nuts threaded onto the lower ends of the reinforcing rods. The reinforcing rods sequentially move through the pre-embedded pipes and the lower crossbeam. An upper pad is fixedly connected to the upper end of the reinforcing rod, and a standard filter head is threaded to the upper end of the reinforcing rod. When the upper pad abuts against the top of the filter plate, the fastening nuts located on both sides of the lower crossbeam can push the lower crossbeam upwards to abut against the filter beams.

[0006] Through the above technical solution, an integrated rigid force transmission system of filter plate, reinforcing tie rod, lower crossbeam, and filter beam is constructed. During the backwashing process of the filter tank, when the filter plate is subjected to the impact force of upward airflow and water flow, the upward thrust is transmitted through the filter plate to the reinforcing tie rod. The reinforcing tie rod transmits the vertical tension step by step to the lower crossbeam, and finally the lower crossbeam transmits the load to the filter beam, forming a stable force transmission system. This system can completely replace the original pre-embedded steel bars that are aged and corroded, effectively offsetting the upward lifting impact force generated by backwashing, and preventing the filter plate from lifting, cracking, and falling off at the source. At the same time, the reinforcement structure is integrated with the filter head function, without modifying the original filter tank structure, achieving in-situ reinforcement without affecting the normal operation of the equipment.

[0007] A further feature of the present invention is that a sealing gasket is fitted onto the upper end of the reinforcing tie rod, and the sealing gasket is located between the upper pad and the filter plate.

[0008] Through the above technical solution, the sealing gasket seals the gap at the upper end of the pre-embedded pipe, effectively preventing water, moisture, and corrosive media from entering the interior of the pre-embedded pipe, avoiding secondary corrosion and aging of the original pre-embedded steel bars and reinforcement components, extending the service life of the filter plate structure and reinforcement device, and ensuring the long-term structural stability of the filter plate.

[0009] A further provision of the present invention is that a lower pad is fitted at the lower end of the reinforcing tie rod, and the lower pad is located between the lower crossbeam and the fastening nut.

[0010] By using the above technical solution, a lower pad is set to increase the contact area between the fastening nut and the lower crossbeam, disperse the local concentrated stress during the locking process, avoid the lower crossbeam from being deformed or damaged by pressure, and at the same time improve the uniformity of the locking force, ensuring that the overall reinforced structure is tight, reliable and not easy to loosen.

[0011] A further feature of the present invention is that an adjusting pad is fitted at the lower end of the reinforcing tie rod, and the adjusting pad is located between the lower crossbeam and the lower pad plate.

[0012] By using the above technical solution and setting adjustment pads, the installation gap differences caused by the construction deviation of filter beams and filter plates can be adapted to achieve precise fine adjustment of installation height, solve the problems of insufficient fit and uneven force on site, ensure that multiple sets of reinforcement devices are subjected to balanced force, and greatly improve the overall reinforcement stability and adaptability.

[0013] A further feature of the present invention is that the reinforcing tie rod is a hollow seamless steel pipe structure, and a plurality of ventilation and water passage holes are provided on the outer wall of the reinforcing tie rod.

[0014] The above technical solution enables the reinforced tie rod to have both structural load-bearing and filter head water and air guiding functions, completely replacing the original filter rod's air and water guiding performance. After reinforcement and modification, the filter pool's filtration efficiency and backwashing effect are consistent with the original design, with no process deviation, no need to adjust the filter pool's operating parameters, and extremely strong compatibility.

[0015] A further feature of the present invention is that both the lower pad and the upper pad are circular steel plate structures.

[0016] Through the above technical solutions, the circular steel plate structure has no stress dead corners, good stress uniformity, and can distribute vertical pressure in all directions, effectively protecting the filter plate concrete and the lower crossbeam structure from cracking and damage; the through-hole structure with clearance fit facilitates quick disassembly and alignment, reduces construction difficulty, and improves installation efficiency.

[0017] A further feature of the present invention is that the lower crossbeam is formed from 316 stainless steel channel steel.

[0018] Through the above technical solution, the lower crossbeam adopts an integrally formed stainless steel channel steel structure, which has high overall strength and is not easily deformed. It can stably integrate the distributed load of multiple sets of reinforcing tie rods and evenly transfer it to the filter beam, thereby improving the integrity and stability of the overall reinforcement system. The 316 stainless steel material can withstand long-term corrosion from water and moisture, is suitable for the humid working conditions of the filter tank, and has a long service life.

[0019] A further feature of the present invention is that the reinforcing tie rod, the upper pad, the lower pad, the fastening nut, and the adjusting pad are all made of 316 stainless steel.

[0020] Through the above technical solution, all core load-bearing components are uniformly made of corrosion-resistant stainless steel, which can effectively resist oxidation and corrosion in the filter water environment and under alternating wet and dry conditions, avoid rusting and failure of reinforced components, ensure long-term stable operation of the reinforcement system, and reduce the cost of later operation, maintenance, and replacement.

[0021] The beneficial effects of this invention are: 1. This device integrates the reinforcement function with the original working function of the filter bed, without changing the original filtration and backwashing working principle. Under normal filtration and backwashing conditions, the reinforcement rods of this device replace the original filter heads and rods, ensuring that the cross-sectional area for water and air passage is consistent with the original structure, fully meeting the requirements of normal water treatment and air-water backwashing processes, without affecting the filter bed's operating parameters and treatment effect. During the backwashing process, when the filter plates are subjected to upward airflow and water flow impact, the upward thrust is transmitted through the filter plates to the reinforcement rods. The reinforcement rods then transmit the vertical tension step by step to the lower crossbeam, and finally, the lower crossbeam transmits the load to the filter beam, forming a stable force transmission system. By calculating the yield strength of the 316 seamless steel pipe and the maximum tensile force that a single rod can withstand in advance, the number of reinforcement devices can be precisely matched and deployed, completely offsetting the upward lifting force generated by backwashing, replacing the original corroded pre-embedded steel bars in bearing the load, and completely eliminating the problems of filter plate lifting, cracking, and falling off.

[0022] 2. All components of this device are made of general-purpose stainless steel profiles and standard accessories, which are convenient to purchase and simple to manufacture. No customized molds are required, resulting in low production costs. Compared with the traditional whole-system dismantling and repair method, it can save more than 90% of the renovation investment. It also belongs to the revolutionary repair mode of "dismantling and recasting", realizing the in-situ reinforcement of old filter plates. There is no need to remove the filter plates or carry out large-scale cleaning. The construction process is extremely simple and the construction cycle is greatly shortened.

[0023] 3. This device can match the reinforcement points and quantities through precise mechanical calculations to ensure balanced force and structural stability. It can completely solve the problems of filter plate lifting and damage caused by corrosion failure of pre-embedded steel bars, effectively prevent safety accidents such as filter media leakage and water quality exceeding standards, and improve the operational stability of the filter pool.

[0024] 4. This device can be used for reinforcing old filter plates with corrosion and aging of reinforcing bars, as well as for remedying defects caused by substandard construction quality of pre-embedded reinforcing bars in newly poured filter plates. It has a wide range of applications and strong versatility. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an embodiment of a reinforcement device for integral cast filter plates in a filter bed according to the present invention. Figure 2 This is a schematic diagram of an embodiment of a reinforcement device for integral cast filter plates in a filter bed according to the present invention. Figure 3 yes Figure 2 An enlarged diagram of A in the diagram.

[0027] In the diagram, 1 is the filter plate; 2 is the filter beam; 3 is the embedded pipe; 4 is the lower crossbeam; 5 is the reinforcing tie rod; 6 is the fastening nut; 7 is the upper pad; 8 is the standard filter head; 9 is the sealing gasket; 10 is the lower pad; 11 is the adjusting pad; and 12 is the air and water passage hole. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] This invention provides a reinforcing device for a monolithic filter plate 1 in a filter bed, such as... Figures 1 to 3 As shown, the filter includes a filter plate 1, several filter beams 2 arranged horizontally below the filter plate 1, and several embedded pipes 3 arranged vertically through the filter plate 1. Its features include: a lower crossbeam 4 movably arranged at the bottom of the filter beams 2, reinforcing rods 5 symmetrically arranged on both sides of the lower crossbeam 4, and fastening nuts 6 threaded onto the lower ends of the reinforcing rods 5. The reinforcing rods 5 movably pass through the embedded pipes 3 and the lower crossbeam 4 in sequence. An upper pad 7 is fixedly connected to the upper end of the reinforcing rod 5, and a standard filter head 8 is threaded to the upper end of the reinforcing rod 5. When the upper pad 7 abuts against the top of the filter plate 1, the fastening nuts 6 located on both sides of the lower crossbeam 4 can push the lower crossbeam 4 upwards to abut against the filter beams 2.

[0030] Furthermore, a sealing gasket 9 is fitted onto the upper end of the reinforcing tie rod 5, and the sealing gasket 9 is located between the upper pad 7 and the filter plate 1.

[0031] Furthermore, a lower pad 10 is fitted onto the lower end of the reinforcing tie rod 5, and the lower pad 10 is located between the lower crossbeam 4 and the fastening nut 6.

[0032] Furthermore, an adjusting pad 11 is fitted at the lower end of the reinforcing tie rod 5, and the adjusting pad 11 is located between the lower crossbeam 4 and the lower pad plate 10.

[0033] Furthermore, the reinforcing tie rod 5 is a hollow seamless steel pipe structure, and a number of ventilation and water passage holes 12 are provided on the outer wall of the reinforcing tie rod 5.

[0034] Furthermore, both the lower pad 10 and the upper pad 7 are circular steel plate structures.

[0035] Furthermore, the lower crossbeam 4 is formed from 316 stainless steel channel steel.

[0036] Furthermore, the reinforcing tie rod 5, the upper pad 7, the lower pad 10, the fastening nut 6, and the adjusting pad 11 are all made of 316 stainless steel.

[0037] Reinforcing Rod 5: Made of 316 stainless steel seamless pipe, it possesses high strength, corrosion resistance, and rust resistance, making it suitable for the long-term humid water environment of the filter bed. The steel pipe is the core load-bearing component and also undertakes the functions of water and air conduction. Both ends are precision machined: the upper end is welded with an 80mm diameter, 8mm thick 316 stainless steel upper pad 7; the upper end is machined with external threads to match the threads of the standard ABS filter head, enabling quick disassembly and replacement of the filter head. The lower end is machined with standard ordinary threads to match the standard fastening nut 6 for locking and fixing; at the same time, based on the original air and water flow parameters of the filter rod in the filter bed, the opening area and position of the air vents in the seamless steel pipe are accurately calculated to ensure that the hydraulic and pneumatic conditions of the filter bed after reinforcement are consistent with the original filter rod, with no process deviation.

[0038] Lower crossbeam 4: Made of 316 stainless steel channel steel, it is corrosion-resistant, has high structural strength, and is not easily deformed. The lower crossbeam 4 is an auxiliary component for load transmission. It is fixedly connected to the lower end of the reinforcing tie rod 5 through the lower pad 10 and the fastening nut 6, integrating the load of all the reinforcing tie rods 5, and evenly transferring the vertical force of the filter plate 1 to the filter beam 2, thereby improving the overall reinforcement stability.

[0039] Upper pad 7 and lower pad 10: Both are made of 316 stainless steel round steel. A through hole is opened in the center of the pad, and the diameter of the through hole is slightly larger than the outer diameter of the reinforcing tie rod 5 to ensure that the tie rod can be freely installed. The upper pad 7 has a diameter of 80mm to match the upper end structure of the tie rod and protect the concrete on the upper surface of the filter plate 1; the lower pad 10 has a diameter of 100mm to increase the contact area with the lower crossbeam 4, avoid local stress concentration, and improve structural stability.

[0040] Other standard accessories: The accessories use water plant standard ABS filter head, stainless steel fastening nut 6, and rubber sealing gasket 9. The accessories are highly versatile, easy to purchase, and low in cost. The sealing gasket 9 can achieve waterproof sealing between the pre-embedded pipe 3 and the tie rod, eliminating the risk of water vapor corrosion.

[0041] This device requires no removal of the original filter plates or emptying of all filter media during installation, making construction convenient and efficient. The specific installation steps are as follows: 1. Cleaning the installation points: Remove the original ABS filter heads at the preset points on both sides of filter beam 2, clean the debris and water inside the pre-embedded pipe 3 of filter plate 1, and ensure that the installation working surface is clean. 2. Component pre-assembly: Install sealing gasket 9 on the outside of the reinforcing tie rod 5 to ensure that the sealing gasket 9 fits tightly and without deviation; 3. Tie rod installation: Insert the reinforced tie rod 5 with the sealing gasket 9 installed vertically into the pre-embedded pipe 3 of the filter plate 1, with the upper end extending out of the surface of the filter plate 1. Then tighten the standard ABS filter head to complete the upper fixation. 4. Lower part fixing: Insert the lower crossbeam 4, adjusting pad 11 and lower pad 10 into the lower end of the reinforcing tie rod 5 in sequence, and screw in the fastening nut 6 for initial locking; 5. Precise tightening: Use a torque wrench to tighten all fastening nuts 6 uniformly according to the designed torque, ensuring that the preload of each reinforcing rod 5 is uniform and consistent, achieving overall force balance and improving the overall reinforcement load-bearing capacity of the device.

[0042] This invention is a reinforcement device for a cast-in-place filter plate 1 in a filter bed, including core components such as a reinforcement tie rod 5, a lower crossbeam 4, an upper pad 7, a lower pad 10, a fastening nut 6, a sealing gasket 9, and a filter head; the reinforcement tie rod 5 has the dual functions of reinforcing and bearing the load of the filter plate 1 and guiding air and water through the filter head, and can replace the original filter head and filter rod, and can be matched and assembled with a standard ABS filter head.

[0043] The reinforcing tie rod 5 is made of 316 seamless steel pipe and is installed through the pre-embedded pipe 3 of the filter plate 1. Its outer diameter matches the inner diameter of the pre-embedded pipe 3 of the filter plate 1, and its inner diameter is consistent with the inner diameter of the original filter head and filter rod. The upper end of the reinforcing tie rod 5 is equipped with a pad 7 and a standard ABS filter head, and the lower end is connected through the lower crossbeam 4 and locked by a fastening nut 6. A sealing gasket 9 is installed between the reinforcing tie rod 5 and the pre-embedded pipe 3 of the filter plate 1 to achieve sealing protection. The lower crossbeam 4 is fixed to the bottom of the filter beam 2 by the reinforcing tie rod 5 and the fastening nut 6, which can directly transmit the backwashing pressure and vertical tension borne by the filter plate 1 to the filter beam 2, thereby achieving the reinforcement and limiting of the filter plate 1.

[0044] Under normal filtration and backwashing conditions, the reinforcing tie rod 5 of this device replaces the original filter head and filter rod, ensuring that the cross-sectional area for water and air passage is consistent with the original structure, fully meeting the requirements of normal water treatment and air-water backwashing processes of the filter, without affecting the operating parameters and treatment effect of the filter.

[0045] During the backwashing process of the filter tank, when the filter plate 1 is subjected to the impact force of the upward airflow and water flow, the upward thrust is transmitted through the filter plate 1 to the reinforcing tie rod 5. The reinforcing tie rod 5 then transmits the vertical tension step by step to the lower crossbeam 4, and finally the lower crossbeam 4 transmits the load to the filter beam 2, forming a stable force transmission system. By calculating the yield strength of the 316 seamless steel pipe and the maximum tensile force that a single tie rod can be pre-calculated, and the number of reinforcing devices can be precisely matched, the upward lifting force generated by backwashing can be completely offset, replacing the original load-bearing function of the corroded pre-embedded steel bars, and completely eliminating the problems of filter plate 1 lifting, cracking, and falling off.

[0046] Meanwhile, the sealing gasket 9 can effectively prevent water and moisture from entering the interior of the pre-embedded pipe 3, avoid secondary corrosion of the pre-embedded steel bars and reinforcement components, and ensure the long-term structural stability of the filter plate 1.

[0047] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A reinforcing device for a monolithic cast filter plate (1) in a filter tank, comprising a filter plate (1), a plurality of filter beams (2) arranged horizontally below the filter plate (1), and a plurality of pre-embedded pipes (3) arranged vertically through the filter plate (1), characterized in that: The filter includes a lower crossbeam (4) that is laterally movable at the bottom of the filter beam (2), reinforcing rods (5) symmetrically arranged on both sides of the lower crossbeam (4), and fastening nuts (6) threaded on the lower end of the reinforcing rods (5). The reinforcing rods (5) move sequentially through the embedded pipe (3) and the lower crossbeam (4). An upper pad (7) is fixedly connected to the upper end of the reinforcing rods (5), and a standard filter head (8) is threaded to the upper end of the reinforcing rods (5). When the upper pad (7) abuts against the top of the filter plate (1), the fastening nuts (6) located on both sides of the lower crossbeam (4) can push the lower crossbeam (4) upward to abut against the filter beam (2).

2. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 1, characterized in that: The upper end of the reinforcing tie rod (5) is fitted with a sealing gasket (9), which is located between the upper pad (7) and the filter plate (1).

3. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 2, characterized in that: The lower end of the reinforcing tie rod (5) is fitted with a lower pad (10), which is located between the lower crossbeam (4) and the fastening nut (6).

4. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 3, characterized in that: The lower end of the reinforcing tie rod (5) is fitted with an adjusting pad (11), which is located between the lower crossbeam (4) and the lower pad plate (10).

5. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 1, characterized in that: The reinforcing tie rod (5) is a hollow seamless steel pipe structure, and several ventilation and water passage holes (12) are provided on the outer wall of the reinforcing tie rod (5).

6. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 3, characterized in that: Both the lower pad (10) and the upper pad (7) are circular steel plate structures.

7. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 1, characterized in that: The lower crossbeam (4) is formed by processing 316 stainless steel channel steel.

8. The reinforcing device for a monolithic filter plate (1) in a filter bed according to claim 4, characterized in that: The reinforcing tie rod (5), the upper pad (7), the lower pad (10), the fastening nut (6), and the adjusting pad (11) are all made of 316 stainless steel.

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