Filtering and descaling device for boiler make-up water

Abstract

A filtering and descaling device for boiler make-up water relates to the technical field of water treatment and comprises an upper shell and a lower shell, the upper shell is fixedly arranged on the upper portion of the lower shell, the interiors of the upper shell and the lower shell are communicated with each other, a water outlet is formed in the top of the upper shell, and a booster pump is arranged on the water outlet. An impeller seat, an impeller and a catalyst alloy descaling net are sequentially arranged in the upper shell from bottom to top, a water inlet is formed in the bottom of the lower shell, and a filter material for filtering impurities in water is arranged in the lower shell. According to the filtering and descaling device for the boiler make-up water, firstly, impurities such as iron in water are removed through the filtering material in the lower shell, and then scale is prevented from being generated through the catalyst alloy descaling net in the upper shell, so that the inner wall of a metal pipeline is prevented from being corroded.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a filtration and descaling device for boiler feedwater. Background Technology

[0002] Most heating systems in Northeast China employ a two-loop design. Hot water boilers receive makeup water from groundwater, which passes through a sodium ion exchanger and connects to the primary network return water header before entering the furnace water chamber. The furnace water chamber contains manifolds or boiler coils, with the water in the manifolds being the primary network circulating water. Return water from heating users travels through the heating network return water header to the circulating pump and then to the hot water boiler. After heating, it is sent back to the users through the primary heating network supply water header for heat exchange, thus completing the entire process of heating and sending out the primary network circulating water and heating the return water.

[0003] The primary heating network has entered its aging stage due to increased service life, and leaks, spills, and drips are common during the heating season. Each year after the heating season, water seal maintenance cannot be performed on the system equipment; instead, the primary network pipes must be drained and inspected, resulting in severe oxidation and corrosion of the pipe walls after draining. When water is added before the start of each heating season, rust flakes off from the inner walls of the primary network, and the rust content in the water is extremely high, reaching as high as 31.5 mg / L of iron ions. The corrosion of the pipes is quite severe, further threatening the safe operation of the system equipment, reducing the service life of the primary network system equipment, posing a significant hidden danger to the company's safe heating supply, and increasing operating costs. Utility Model Content

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a filtration and descaling device for boiler feedwater to solve the problem of high iron content in boiler scale deposits in the prior art.

[0005] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0006] A filtration and descaling device for boiler feedwater includes an upper shell and a lower shell. The upper shell is fixedly installed on the upper part of the lower shell, and the upper and lower shells are internally connected. The top of the upper shell is provided with a water outlet, and a booster pump is provided on the water outlet. The upper shell is provided with an impeller seat, an impeller, and a descaling screen of catalyst alloy arranged sequentially from bottom to top. The bottom of the lower shell is provided with a water inlet, and the lower shell is provided with filter media for filtering impurities in the water.

[0007] Furthermore, a pressure sensor is installed on the pipeline behind the booster pump, and the booster pump is electrically connected to the pressure sensor.

[0008] Furthermore, the descaling mesh is arranged in several layers from bottom to top inside the upper shell.

[0009] Furthermore, the bottom of the lower shell is provided with support legs.

[0010] Furthermore, the filter media is a fiber filter material.

[0011] Furthermore, the relationship between the upper shell radius r and the lower shell radius R is as follows: .

[0012] The beneficial effects of this utility model are as follows: The filter and descaling device for boiler feedwater of this utility model first removes impurities such as iron from the water through the filter material in the lower shell, and then prevents the formation of scale through the catalyst alloy descaling mesh in the upper shell, thus avoiding corrosion of the inner wall of the metal pipe and achieving a good anti-corrosion effect. The copper-zinc alloy itself has bactericidal and algaecidal effects, which can effectively prevent the formation of scale by calcium, magnesium, barium, strontium, and silicon ions, keep the pipeline equipment unobstructed, improve the utilization efficiency and heat exchange efficiency of the system equipment, and thus ensure the safe, reliable, and long-term stable operation of the system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the filtration and descaling device for boiler feedwater according to the present invention.

[0014] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the filtration and descaling device for boiler feedwater according to this utility model.

[0015] Figure 3 This is a schematic diagram of the descaling mesh of this utility model.

[0016] In the diagram: 11 is the upper shell, 111 is the water outlet, 112 is the booster pump, 113 is the pressure sensor, 114 is the descaling screen, 115 is the impeller, 116 is the impeller seat, 12 is the lower shell, 121 is the water inlet, 122 is the support leg, and 123 is the filter media. Detailed Implementation

[0017] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-3As shown, this utility model provides a filtration and descaling device for boiler feedwater, including an upper shell 11 and a lower shell 12. Specifically, both the upper shell 11 and the lower shell 12 can be cylindrical, cuboid, or other shapes. The upper shell 11 is fixedly mounted on the upper part of the lower shell 12, specifically, it can be fixed by bolts, and the upper shell 11 and the lower shell 12 are internally interconnected. The top of the upper shell 11 is provided with a water outlet 111, specifically, the water outlet 111 can be located at the middle of the top of the upper shell 11. A booster pump 112 is provided on the water outlet pipe of the water outlet 111, and a pressure sensor 113 can be installed on the pipe behind the booster pump 112. The booster pump 112 and the pressure sensor 113 are electrically connected. Since the water in this utility model adopts a bottom-in, top-out form, a booster pump 112 is specially provided to prevent insufficient water pressure. The water pressure is adjusted by frequency conversion according to the real-time data transmitted back by the pressure sensor 113 to ensure pressure.

[0019] Inside the upper shell 11, from bottom to top, are arranged an impeller seat 116, an impeller 115, and a descaling mesh 114 of catalyst alloy. The descaling mesh 114 has a mesh structure to increase the contact area and time with water. Several layers of the descaling mesh 114 are arranged inside the upper shell 11 from bottom to top. The impeller 115, under the action of water flow, can quickly create turbulent flow. During operation, when water flows through the impeller 115, the water flow changes, generating turbulence. This turbulence causes the negative electrons (e-) in the activation current automatically released by the alloy chip of the descaling mesh 114 to rapidly meet and undergo a polarization reaction. This rapidly saturates the electrons in the outer electron shell of cations in the fluid, achieving an octet stable structure and no longer exhibiting positive charge, thus preventing them from combining with negatively charged anions and preventing the formation of acid salts, achieving the purpose of scale inhibition. Simultaneously, the activation current can form an electron film on the inner wall of the metal pipe, isolating the corrosion of the metal pipe inner wall by oxygen molecules in the water, thus achieving a good anti-corrosion effect. Furthermore, the copper-zinc alloy itself possesses bactericidal and algaecidal properties. The supersaturated activation current it releases effectively penetrates the cell membranes of microorganisms, thus giving the alloy the characteristic of killing algae and microorganisms. This inhibits the growth of algae and microorganisms in the fluid, preventing the survival of bacteria that are the host microorganisms. Therefore, the catalyst alloy exhibits excellent algaecidal and bactericidal effects. The impeller seat 116 serves to fix the impeller 115 and the descaling mesh 114.

[0020] The lower shell 12 has a water inlet 121 at its bottom, and a filter media 123 for filtering impurities in the water is provided inside the lower shell 12. Specifically, the filter media 123 can be a fiber filter material, which filters impurities in the water. The lower shell 12 has support legs 122 at its bottom, which provide support and stability.

[0021] When the upper shell 11 and the lower shell 12 are cylindrical structures, the relationship between the radius r of the upper shell 11 and the radius R of the lower shell 12 is as follows: At this ratio, the descaling efficiency of this utility model can be guaranteed.

[0022] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any modifications, alterations, substitutions, and variations made by those skilled in the art to the above embodiments are within the scope of the present invention.

Claims

1. A filtration and descaling device for boiler feedwater, characterized in that: It includes an upper shell (11) and a lower shell (12). The upper shell (11) is fixedly installed on the upper part of the lower shell (12), and the upper shell (11) and the lower shell (12) are internally connected. The upper shell (11) has a water outlet (111) at the top, and a booster pump (112) is installed on the water outlet (111). The upper shell (11) has an impeller seat (116), an impeller (115) and a descaling screen (114) of catalyst alloy arranged from bottom to top. The lower shell (12) has a water inlet (121) at the bottom, and a filter media (123) for filtering impurities in the water is installed inside the lower shell (12).

2. The filtration and descaling device for boiler feedwater according to claim 1, characterized in that: A pressure sensor (113) is installed on the pipeline behind the booster pump (112), and the booster pump (112) is electrically connected to the pressure sensor (113).

3. A filtration and descaling device for boiler feedwater according to claim 1, characterized in that: The descaling mesh (114) is arranged in several layers from bottom to top inside the upper shell (11).

4. A filtration and descaling device for boiler feedwater according to claim 1, characterized in that: The bottom of the lower shell (12) is provided with a support leg (122).

5. A filtration and descaling device for boiler feedwater according to claim 1, characterized in that: The filter media (123) is a fiber filter material.

6. A filtration and descaling device for boiler feedwater according to claim 1, characterized in that: The relationship between the radius r of the upper shell (11) and the radius R of the lower shell (12) is as follows: .

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