Reusable multi-bag desalted water filter

Abstract

The invention discloses a reusable multi-bag desalted water filter which comprises a stainless steel shell, a gland arranged at the top of the stainless steel shell, a water inlet and a water outlet which are formed in the stainless steel shell, a discharge port formed in the bottom of the stainless steel shell, and a pressure gauge interface and an exhaust port which are formed in the gland, the water inlet and the water outlet are formed in the upper side and the lower side of the stainless steel shell respectively, the stainless steel shell is provided with a detachable connecting mechanism, at least one filter bag is arranged on the connecting mechanism, and water entering from the water inlet is filtered through the filter bag and then discharged outwards. The effects of low pollution, simplicity in operation, low cleaning water consumption and reusability can be achieved, and the method is the sustainable development direction of the current water treatment process.

Description

Technical Field

[0001] The invention relates to the technical field of bag filters, in particular to a reusable multi-bag desalted water filter. Background Art

[0002] With the maturity of water treatment technology, energy saving and consumption reduction are the main directions pursued by water treatment technology today. In the current environment of water shortage, the improvement of water treatment technology is particularly important. Therefore, convenience, energy saving, low pollution and simple operation are the focus of current water treatment technology research and development. At present, in the condensate recovery and desalination process and other desalination processes, the filter elements used in the existing filters have a high cleaning frequency and high water consumption, so disposable filter elements occupy a dominant position in the filter, but the consumption cost of disposable filter elements is high, and discarded filter elements are easy to cause environmental pollution. Summary of the invention

[0003] In order to solve some or certain technical problems existing in the prior art, the purpose of this application is to provide a reusable multi-bag desalted water filter, which can achieve low pollution, simple operation, low water consumption for cleaning and reusability, and is the direction of sustainable development of water treatment technology today.

[0004] In order to solve the above existing technical problems, this application adopts the following technical solutions:

[0005] A reusable multi-bag desalted water filter comprises a stainless steel shell, a gland arranged on the top of the stainless steel shell, a water inlet and a water outlet arranged on the stainless steel shell, a drain port arranged at the bottom of the stainless steel shell, and a pressure gauge interface and an exhaust port arranged on the gland, wherein the water inlet and the water outlet are arranged on the upper and lower sides of the stainless steel shell respectively, the stainless steel shell is provided with a detachable connecting mechanism, and at least one filter bag is arranged on the connecting mechanism, and water entering the water inlet is filtered by the filter bag and then discharged outward.

[0006] Preferably, the connection mechanism comprises a support ring arranged on the inner side wall of the stainless steel shell, a porous plate arranged on the support ring, and a mounting hole arranged on the porous plate, and the bag opening of the filter bag is fixed in the mounting hole.

[0007] Preferably, 2 to 4 pressing blocks are arranged on the inner side walls of the stainless steel shell, and the sides of the porous plate are provided with a plurality of grooves with a width greater than that of the pressing blocks, and the porous plate is fixed on the supporting ring by the pressing blocks.

[0008] Preferably, a conical limiting ring is provided at the bag opening of the filter bag, and the filter bag is installed in each installation hole of the porous plate through the limiting ring.

[0009] Preferably, a clamping mechanism is provided between the limiting ring and the porous plate, and the filter bag is clamped and fixed in the porous plate by the clamping mechanism.

[0010] Preferably, the clamping mechanism includes several pairs of L-shaped hooks arranged on the porous plate, a base plate arranged on the limiting ring, a spring arranged on the base plate, and a pressure rod arranged at the upper end of the spring. An L-shaped hook is symmetrically arranged on both sides of the mounting hole, and the limiting ring is clamped and fixed by being connected to the L-shaped hook at both ends of the pressure rod.

[0011] Preferably, the filter bag is made of polypropylene, nylon or polyester.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Wide range of uses: Suitable for a variety of water treatment scenarios, such as coarse filtration, medium filtration, fine filtration, etc., and can handle suspended solids and particulate pollutants under various water quality conditions.

[0014] 2. Cost-effectiveness: Compared with other types of filters such as plate filters, bag filters have lower investment costs, and since the filter bag materials are usually affordable, the maintenance and replacement costs are also lower.

[0015] 3. High filtration accuracy: Bag filters can use filter bags of different materials and pore sizes to achieve different filtration accuracies, adapt to different levels of water treatment requirements, and have good interception capabilities for fine particles.

[0016] 4. Large processing capacity: Due to its internal structure design, the filter bag has a large surface area and strong dust holding capacity. It can process a large flow of water and is suitable for continuous or batch water treatment operations.

[0017] 5. Easy replacement: As consumables, filter bags do not require complicated tools for replacement. You only need to take out the old bag and put in the new bag. The operation is simple and fast, which greatly reduces downtime and maintenance workload. Moreover, some filter bags can be reused after cleaning, which further saves costs.

[0018] 6. Small wind resistance: Compared with some types of filters, bag filters have smaller operating resistance and lower energy consumption, which is conducive to energy-saving effects in long-term operation.

[0019] 7. Structural flexibility: The number of bags and filter bag materials can be adjusted according to actual needs to adapt to different processing flow rates, filtration efficiency, and temperature and chemical resistance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2It is a schematic diagram of the structure of the porous plate in the present invention; Figure 3 It is a schematic diagram of the connection structure between the filter bag and the pressing mechanism in the present invention;

[0022] In the figure: 1. Stainless steel shell; 2. Filter bag; 3. Connection mechanism; 4. Water inlet; 5. Pressure cover; 6. Pressure gauge interface; 7. Exhaust port; 8. Clamping mechanism; 9. Pressure block; 10. Perforated plate; 11. Support ring; 12. Water outlet; 13. Drain port; 14. Groove; 15. L-shaped hook; 16. Mounting hole; 17. Limiting ring; 18. Bottom plate; 19. Pressure rod; 20. Spring. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0025] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] like Figures 1 to 3 As shown, a reusable multi-bag desalted water filter comprises a stainless steel shell 1, a pressure cover 5 arranged on the top of the stainless steel shell 1, a water inlet 4 and a water outlet 12 arranged on the stainless steel shell 1, a drain port 13 arranged at the bottom of the stainless steel shell 1, and a pressure gauge interface 6 and an exhaust port 7 arranged on the pressure cover 5, wherein the water inlet 4 and the water outlet 12 are respectively arranged on the upper and lower sides of the stainless steel shell 1, the stainless steel shell 1 is provided with a detachable connecting mechanism 3, and at least one filter bag 2 is arranged on the connecting mechanism 3, and the water entering the water inlet 4 is filtered by the filter bag 2 and then discharged outward.

[0027] On the basis of the existing process, a reusable multi-bag desalted water filter is added and placed in front of the iron removal filter, so that the improved condensate recovery desalted water and other desalted water process flow is a circulating water heat exchanger, a condensate water tank, a condensate delivery jump, a reusable multi-bag desalted water filter, an iron removal filter, a cation bed, a mixed bed, and a desalted water tank. The operation steps are as follows:

[0028] 1. Water inlet: The water flowing out of the condensate transport enters the stainless steel housing 1 through the water inlet 4;

[0029] 2. Filtration: When water passes through the filter bag 2, the pores on the filter bag 2 filter out impurities, particles, suspended matter and other substances, thereby achieving the purpose of purifying water quality. The filter bag 2 is usually made of polyester, polypropylene, nylon, polytetrafluoroethylene and other materials. Filter bags made of different materials have different filtration accuracy and corrosion resistance;

[0030] 3. Water outlet: The water filtered by the filter bag 2 flows out from the pipe of the water outlet 12 to the iron removal filter to achieve the purpose of purifying the water quality.

[0031] 4. Cleaning: When the impurities, particles, suspended matter and other substances on the filter bag 2 accumulate to a certain extent, the filter bag 2 needs to be cleaned or replaced. The filter bag is usually cleaned by backwashing, water washing, mechanical cleaning and other methods. By adding three devices for two uses and one standby, it is possible to intercept larger impurities coming from the condensate pipeline at the front end of the iron removal filter, thereby extending the service life of the iron removal filter element. In the process control, the pressure of the condensate entering the iron removal filter is 0.4MPa, the temperature is ≤45℃, and the design volume of the condensate is 880m 3 / h, and the multi-bag desalination filter can freely configure the number of filter bags, and the water output can reach the designed amount or above, which fully meets the condensate recovery process. And the filter bag 2 can be detachably connected through the connecting mechanism 3, so that the filter bag 2 can be cleaned conveniently and quickly, and the cleaned filter bag 2 can be reused, the installation time is short, and the manpower and material investment is small, which can achieve the goal of energy saving and consumption reduction to the greatest extent, so that the impurities of the condensate recovery are less, which can better reflect the filtering effect, and can also avoid the material restrictions of the filter bag, intermittent operation and labor intensity, clogging risks, and integrity inspection difficulties to the greatest extent. When the accumulated water at the bottom of the stainless steel shell 1 needs to be discharged, it can also be completely discharged through the drain port 13.

[0032] As a further improvement, the connecting mechanism 3 includes a supporting ring 11 arranged on the inner side wall of the stainless steel shell 1, a porous plate 10 arranged on the supporting ring 11, and a mounting hole 16 arranged on the porous plate 10, and the bag opening of the filter bag 2 is fixed in the mounting hole 16.

[0033] The porous plate 10 can be supported and fixed by the support ring 11 , which makes the installation of the porous plate 10 more convenient, and the bag opening of the filter bag 2 is installed in the installation hole 16 , which makes the installation and fixation of the filter bag 2 simpler.

[0034] A further improvement is that 2 to 4 pressing blocks 9 are arranged on the inner side walls of the stainless steel shell 1, and the side surfaces of the porous plate 10 are provided with a plurality of grooves 14 with a width greater than that of the pressing blocks 9, and the porous plate 10 is pressed and fixed on the support ring 11 by the pressing blocks 9.

[0035] In order to prevent the support ring 11 from floating after being placed, when installing the support ring 11, first align the groove 14 with the position of the pressure block 9 and insert it downward, and then rotate it a certain angle to limit the upper end surface of the support ring 11 through the pressure block 9, thereby effectively solving the problem of the support ring 11 tilting and floating due to buoyancy or impact force.

[0036] A further improvement is that a conical limiting ring 17 is provided at the bag mouth of the filter bag 2, and the filter bag 2 is installed in each mounting hole 16 of the porous plate 10 through the limiting ring 17; a clamping mechanism 8 is provided between the limiting ring 17 and the porous plate 10, and the filter bag 2 is clamped and fixed in the porous plate 10 by the clamping mechanism 8.

[0037] A conical limiting ring 17 is installed at the bag opening of the filter bag 2. The limiting ring 17 can form a rigid structure for the bag opening. When placed in the various mounting holes 16 of the porous plate 10, it plays a limiting role to prevent it from falling under the support plate. The limiting ring 17 can be pressed and fixed by the clamping mechanism 8 to prevent it from detaching from the mounting hole 16, allowing water to flow downward without filtering. It is also more convenient to clean the filter bag 2 after disassembly and facilitate subsequent installation, so that it can continue to be reused.

[0038] On the basis of the above technical solution, it is further improved that the clamping mechanism 8 includes a plurality of pairs of L-shaped hooks 15 arranged on the porous plate 10, a base plate 18 arranged on the limiting ring 17, a spring 20 arranged on the base plate 18, and a pressure rod 19 arranged at the upper end of the spring 20. An L-shaped hook 15 is symmetrically provided on both sides of the mounting hole 16, and the limiting ring 17 is clamped and fixed to the L-shaped hook 15 through the two ends of the pressure rod 19.

[0039] The L-shaped hooks 15 are symmetrically installed above the support plates and are located on the outside of each mounting hole 16. The bottom plate 18 and the limit ring 17 are generally integrally formed and arranged along the diameter direction. The bottom of the spring 20 is welded to the bottom plate 18. Generally, two springs 20 are provided, and a pressure rod 19 with a length greater than the diameter of the mounting hole 16 is welded at the upper end of the spring 20. During installation, the filter bag 2 is first placed in the mounting hole 16, and then the pressure rod 19 is rotated so that its two ends are located out of the L-shaped hook 15, and then the pressure rod 19 is pushed upward by the spring 20 and stuck in the L-shaped hook 15, which is convenient for disassembly and assembly of the filter bag 2, with good filtering effect, simple operation and convenient maintenance.

[0040] As a further improvement, the filter bag 2 is made of polypropylene, nylon or polyester; the disadvantages of filter bag material limitation, intermittent operation and labor intensity, clogging risk, difficulty in integrity inspection and unsuitability for high-pressure environment can be avoided to the greatest extent.

[0041] It is suitable for water plants, sewage treatment plants, industrial production and other fields, and is widely used in water filtration and purification. Water treatment bag filters can remove suspended matter, particles, impurities and other substances in water, improve water transparency and cleanliness, protect the normal operation of water treatment equipment and pipelines, reduce water treatment costs, and improve water treatment efficiency.

[0042] Water treatment bag filter is a multi-purpose filtering equipment with novel structure, small size, simple and flexible operation, energy saving, high efficiency, sealing work and strong adaptability. It is widely used in chemical, coating, ink, food and other industries. In particular, the filter bag has a small chance of side leakage, can accurately ensure the filtering accuracy, and can quickly replace the filter bag.

[0043] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A reusable multi-bag desalted water filter, characterized in that: The invention comprises a stainless steel shell (1), a gland (5) arranged at the top of the stainless steel shell (1), a water inlet (4) and a water outlet (12) arranged on the stainless steel shell (1), a drain port (13) arranged at the bottom of the stainless steel shell (1), and a pressure gauge interface (6) and an exhaust port (7) arranged on the gland (5); the water inlet (4) and the water outlet (12) are arranged at the upper and lower sides of the stainless steel shell (1), respectively; the stainless steel shell (1) is provided with a detachable connecting mechanism (3); at least one filter bag (2) is arranged on the connecting mechanism (3); water entering the water inlet (4) is filtered by the filter bag (2) and then discharged to the outside.

2. A reusable multi-bag desalted water filter according to claim 1, characterized in that: The connecting mechanism (3) comprises a supporting ring (11) arranged on the inner side wall of the stainless steel shell (1), a porous plate (10) arranged on the supporting ring (11), and a mounting hole (16) arranged on the porous plate (10); the bag opening of the filter bag (2) is fixed in the mounting hole (16).

3. A reusable multi-bag desalted water filter according to claim 2, characterized in that: The inner side walls of the stainless steel shell (1) are also provided with 2 to 4 pressing blocks (9) in a ring, and the side surfaces of the porous plate (10) are provided with a plurality of grooves (14) whose width is greater than that of the pressing blocks (9). The porous plate (10) is fixed on the supporting ring (11) by means of the pressing blocks (9).

4. A reusable multi-bag desalted water filter according to claim 1, characterized in that: A conical limiting ring (17) is provided at the bag opening of the filter bag (2), and the filter bag (2) is installed in each installation hole (16) of the porous plate (10) through the limiting ring (17).

5. A reusable multi-bag desalted water filter according to claim 4, characterized in that: A clamping mechanism (8) is provided between the limiting ring (17) and the porous plate (10), and the filter bag (2) is clamped and fixed in the porous plate (10) by the clamping mechanism (8).

6. A reusable multi-bag desalted water filter according to claim 5, characterized in that: The clamping mechanism (8) comprises a plurality of pairs of L-shaped hooks (15) arranged on the porous plate (10), a base plate (18) arranged on the limiting ring (17), a spring (20) arranged on the base plate (18), and a pressure rod (19) arranged on the upper end of the spring (20). The L-shaped hook (15) is symmetrically arranged on both sides of the mounting hole (16), and the limiting ring (17) is clamped and fixed to the L-shaped hook (15) by means of two ends of the pressure rod (19).

7. The reusable multi-bag desalted water filter according to claim 1, characterized in that: The filter bag (2) is made of polypropylene, nylon or polyester.

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