CN103816716A - Water treatment core component and water treatment device - Google Patents

Abstract

The invention discloses a water treatment core component and a water treatment device. The core component includes a cylindrical inner core and a cylindrical shell that are sealed, installed and connected, and is characterized in that the inner core of the core component is a metal rod with a spiral structure on the surface, and the structure of the metal rod is as follows: the total length is 100-400mm; The modulus of the helical structure is 2-10, the number of helical ends is 1, 2 or 4, the diameter coefficient is 10-16, the pressure angle is 18-22°, the diameter of the index circle is 32-120mm, and the diameter of the addendum circle is 36 -140mm, the diameter of the dedendum circle is 27.2-96mm, and the axial pitch is 6.28-31.40mm. The water treatment device is installed to use the water treatment core component.

Description

Water treatment core components and water treatment devices

technical field

The present invention relates to water treatment technology, specifically a water treatment core component and a water treatment device using the water treatment core component.

Background technique

Due to fouling of the boiler, frequent accidents and increased maintenance time also affect the normal production and life. For enterprises, the long shutdown time directly affects production and reduces the economic benefits of the enterprise. Therefore, the optimal design of the core structure of industrial boiler water treatment equipment has important theoretical research value and practical significance, and has attracted extensive attention from domestic and foreign experts.

At present, the relevant industrial boiler water treatment devices at home and abroad mainly include KDF filter material [US4642192, US5122274, US5135654] and PTH water processor. US Patent No. 4,642,192; 5,122,274; 5,135,654 introduced the scale inhibition mechanism of KDF alloy filter material. KDF alloy filter materials are small high-purity copper-zinc alloy solid particles with high density, but from the perspective of its water purification mechanism, it actually uses only the surface part, so there are three problems in the application process : The filter material will form a certain amount of precipitates through the reaction, and these precipitates will cover the surface of the alloy, reducing the ability to remove impurities, and the density of the KDF medium is high, and the backwashing pressure is high, which may increase the cost; if no equipment is added, The accumulation of filter material may block the filter bed and affect the water flow; water treatment projects need to use a large amount of copper-zinc alloy filter material, and the initial investment is large, which is the main problem. Therefore, the design of the filter bed and the shape of the KDF alloy should be further improved in order to make backwashing more convenient and smooth. Israel's patented PTH water processor has many advantages that other water treatment devices do not have. Although it has achieved a certain effect, it is difficult to process, high in cost, and expensive, which is not convenient for practical application.

Chinese patent document CN1765758A discloses a copper-zinc alloy with rare earth components and water treatment equipment prepared from it. The alloy can form a primary battery with multiple potential levels, which can activate water, inhibit corrosion, and prevent scale. , Sterilization and purification, through the treatment of the alloy, the calcium salt in the water can form suspended calcium carbonate particles without adhering to the cold wall of the boiler. However, the document discloses that the water treatment equipment made of this alloy uses alloy powder as a filler, which has the disadvantages of high resistance, easy blockage, and easy coverage and precipitation on the surface of the alloy, resulting in a decrease in processing capacity.

Chinese patent document CN102010070A discloses a suspended water treatment filler with a double helix structure, which is used for biochemical reactions in sewage treatment. However, the water treatment filler with this structure is used for sewage treatment, and the operating flow rate is low. Biochemical reaction is different from the water treatment technical field of the boiler water inlet device, and according to the content disclosed in the patent document, this kind of packing needs to be processed into a thin-walled structure, and when used for boiler water treatment, due to the large operating conditions The water flow rate is too high, and the packing strength of the thin-walled structure cannot meet the use requirements.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a water treatment core component and a water treatment device. When the core component and the water treatment device it constitutes work, they not only have a large contact area with water and have good water treatment effect, but also have simple structure, easy processing, convenient use, low price, and are suitable for industrial application.

The technical solution of the present invention to solve the technical problem of the core component is to design a core component for water treatment, which includes a cylindrical inner core and a cylindrical shell that are sealed, installed and connected, and is characterized in that the inner core of the core component has a spiral structure on the surface The metal rod, the structure of the metal rod is as follows: the total length is 100-400mm; -22°, the pitch circle diameter is 32-120mm, the addendum circle diameter is 36-140mm, the dedendum circle diameter is 27.2-96mm, and the axial pitch is 6.28-31.40mm.

Compared with the prior art, the core component of the present invention is designed as a metal rod with a spiral structure on the surface, which can effectively increase the contact surface area when the water flows through it; at the same time, the spiral core structure has a smooth outer surface, which can ensure a certain The reflux speed can ensure better water treatment efficiency. The water treatment device composed of the core components of the present invention not only has a larger contact area with water, but also has a good water treatment effect, and at the same time has a simple structure, easy processing, convenient use, low price, and is suitable for industrial application. Experiments show that when the water treatment device adopting the core components of the present invention is used for industrial boiler water treatment, it unexpectedly realizes the positive effect of large water flow rate and prevention of hard scale.

Description of drawings

Fig. 1 is a schematic diagram of the core structure of a helical metal rod core of an embodiment of the water treatment core component of the present invention.

Fig. 2 is a schematic structural diagram of a shell of a water treatment device according to an embodiment of the water treatment core component of the present invention. Among them, Fig. 2(a) is a schematic diagram of the front view of the casing of the water treatment device of the present invention; Fig. 2(b) is a schematic diagram of the A-A section structure of the casing of the water treatment device of the present invention.

Fig. 3 is a schematic diagram of a boiler water circulation simulation device of an embodiment of a water treatment device using a water treatment core component according to the present invention.

Detailed ways

Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof.

The water treatment core assembly designed in the present invention (referred to as the core assembly, see Fig. 1-2) includes a cylindrical inner core 4-1 and a cylindrical shell 4-2 that are sealed, installed and connected, and is characterized in that the inner core 4-2 of the core assembly 1 is a metal rod with a spiral structure on the surface. The structure of the metal rod is as follows: the total length H is 100-400mm; Coefficient q is 10-16, pressure angle α is 18-22°, index circle diameter d is 32-120mm, addendum circle diameter d _a is 36-140mm, dedendum circle diameter d _f is 27.2-96mm, axial The tooth pitch p is 6.28-31.40mm.

The structure of the metal rod in the core component of the present invention is optimized as follows: the spiral structure modulus m is 2; the number z of the spiral ends is 1; the diameter coefficient q is 16mm; the pressure angle α is 20°.

The spiral structure is processed by existing mechanical processing methods.

The inner core 4-1 with the helical structure described in the core component of the present invention is through the research and analysis of the existing water treatment device structure at home and abroad, based on the knowledge of machinery and fluid mechanics, the design of the core structure of the core component of water treatment is carried out, and the improvement is improved. The surface area of the core structure in contact with water, while taking into account the small impact on the flow rate of water, ensures the service life and improves the scale inhibition efficiency.

The shell 4-2 of the core component of the present invention is in the shape of a cylinder and can be made of PP-R plastic or stainless steel. The cylindrical shell 4-2 and the columnar inner core 4-1 adopt an interference fit. This can not only protect the structure of the inner core 4-1, but also limit or guide the passing water flow, so that when the water flow passes through the structure of the inner core 4-1 in a spiral shape, sufficient contact between the water flow and the inner core 4-1 is ensured.

The main structure of the core component 4 of the present invention is that the cylindrical inner core 4-1 and the cylindrical outer shell 4-2 are sealed, installed, connected and assembled together. The two ends of the core component 4 of the embodiment are fixed by GB/T 6170 M36 type nuts, and the water treatment device is formed by connecting the inlet and outlet pipes, flow meters and valves of the water treatment device through GB8163-1999 seamless steel pipes (see Fig. 3). The water treatment device of the present invention is particularly suitable for low and medium pressure industrial hot water boilers and steam boiler water treatment systems.

A further feature of the present invention is that the metal rod is a copper-zinc alloy material, and is prepared by smelting according to the following quality formula: 50-70% copper, 20-35% zinc, 5-15% tin, 5-10% nickel, Iron 0.5-1%, manganese 0.01-0.1%, rare earth elements neodymium or cerium 0.01-0.15%, and silicon 1-3%, magnesium 1-3%, chromium 0.1-1.0%, molybdenum 0.1-1.0% and vanadium 0.1- One or more of 1.0%, the sum of each component is 100%. The alloy material is the applicant's prior patented technology (CN1765758A). Studies have shown that when water flows through the core structure, heavy metal elements such as copper, zinc, tin, and nickel in the alloy are the inhibitory components of bacteria and other microorganisms, which can coagulate bacterial proteins and lose their activity, thereby reducing the secretion of viscous substances, avoiding or Reduce the formation of hard scale attached to its wall; the magnesium and zinc plasma in the alloy can form ion replacement with the formed scale calcium carbonate, barium sulfate, etc. Due to the difference in ionic radius, the crystal structure of the scale formed changes, and the result Reduce the density of the formed scale; the sub-outer layer of the rare earth elements in the alloy has unsaturated transition electrons, which can be fixed on the joint surface of the metal crystal, inhibiting the excessive growth of the crystal, and at the same time can generate a transition energy level, so that The electrode potential of the alloy changes to form a copper-zinc, zinc-nickel, zinc-tin, nickel-tin primary battery, and then a series of redox reactions occur, which can also destroy the anion and cation balance of the existing scale and rust, thereby realizing resistance. Dirt, purification effect. In particular, the unique structure of the core assembly of the present invention can produce a hydrodynamic impact effect, which can generate turbulent flow when the water flows through the surface of the core assembly, so that the water flow can fully interact with the core assembly, and at the same time reduce the impact on the flow rate of the water flow; the core assembly of the present invention has The larger surface area increases the interaction area between the water flow and the alloy, thereby enhancing the anti-scaling effect of the alloy and achieving the effects of large flow, low resistance and long life.

The core component 4 of the present invention is mainly used in water treatment devices, especially industrial boiler water treatment devices. The water treatment device adopting the core component 4 of the present invention (such as a conventional boiler water circulation simulation device, see FIG. 3 ), mainly includes a water pump 1, valves 2, 5, 6 and 7, flow meters 3, 8 and 9, and a water treatment device 4, Heat exchanger 10, container 11, simulated boiler 12 and water tank 13. The water treatment device 4 of the present invention is installed in the water inlet pipeline, and its two ends are respectively connected with the flow meter 3 and the valve 5 . Run the boiler water circulation simulation device, adjust the total flow rate to 400L/h, adjust the cooling water flow rate to 100L/h, and set up two sets of comparative experiments to detect the influence of the alloy core on the water flow rate. The flow rate of the outlet water is the flow rate of the normal water pipe, and the diameter of the connecting pipe connected to the water treatment device is 16mm. Experiments have shown that when the water flow rate in the connecting pipe is 1.0-2.0m/s, the simulated boiler is opened for inspection after 60 days of operation, and there is no scale phenomenon on the inner wall of the boiler and the wall of the pipe. The stone-type soft scale suspended matter shows that the water treatment device has dual effects of scale inhibition and scale prevention, and can achieve the purpose of scale inhibition and scale prevention of boilers. The core components 4 of the present invention can be used in parallel.

What is not mentioned in the present invention is applicable to the prior art.

Compared with similar components on the market, the core structure of the present invention is easier to process, has a larger surface area, and has a higher utilization rate of the alloy when it interacts with water, and the flow rate will not be greatly affected during the action of water.

Example 1-4

The specific parameters of the core structure metal rods designed in Examples 1-4 are listed in Table 1.

Table 1 The specific parameter table of the kernel structure of the embodiment 1-4

Example number 1 2 3 4 m 2 6 8 10 z 1 2 2 4 q(mm) 16 10 12 12 d(mm) 32 60 96 120 d _a (mm) 36 72 112 140 d _f (mm) 27.2 45.6 76.8 96 p(mm) 6.28 18.84 25.12 31.40 α(°) 20 18 twenty two twenty two H(mm) 100 200 300 400

Examples 1-4 all use metal rods prepared from the copper-zinc alloy material provided by the applicant’s prior patent (CN1765758A) as raw materials, which are machined to form core components and installed in the water inlet pipeline of the boiler water circulation simulation device . Run the boiler water cycle simulator to examine the effect of the alloy core on the water flow rate. When the water flow rate in the connecting pipe is 1.0-2.0m/s, the simulated boiler is opened for inspection after 60 days of operation. There is no scale phenomenon on the inner wall of the boiler and the pipe wall. There is no calcite hard scale in the water, only a large amount of aragonite soft scale. Scale suspension.

Example 5

Designing the kernel structure parameters is the same as that in Embodiment 1. Run under the same conditions as in Example 1.

The raw material formula of the copper-zinc alloy metal rod is: 60% copper, 25% zinc, 5% tin, 5% nickel, 0.5% iron, 0.1% manganese, 0.1% cerium, 1% silicon, 1% magnesium, chromium 0.8%, Molybdenum 1% and Vanadium 0.5%.

Example 6

Designing the kernel structure parameters is the same as that in Embodiment 1. Run under the same conditions as in Example 1.

The raw material formula of the alloy rod is: 65% copper, 20% zinc, 5% tin, 5% nickel, 0.75% iron, 0.1% manganese, 0.15% cerium, 1% silicon, 1% chromium, 1% molybdenum and 1% vanadium %.

Example 7

The two water treatment core components in Example 5 are connected in parallel, connected to the water treatment device 4 of the boiler water circulation simulation system, and the others are operated under the same conditions as in Example 5. When the water flow rate in the connecting pipe is 1.0-2.0m/s, the simulated boiler is opened for inspection after 75 days of operation. There is no scale phenomenon on the inner wall of the boiler and the pipe wall. There is no calcite hard scale in the water, only a large amount of aragonite soft scale. Scale suspension.

Claims (9)

1. a water treatment core component, comprises that sealing installs the column kernel and the cylinder-like shell that connect, it is characterized in that described in this core component that kernel is the metal bar that surface has screw structure, and the structure of described metal bar is as follows: total length is 100-400mm; Screw structure modulus is 2-10, and helical head number is 1,2 or 4, and diameter quotient is 10-16, and pressure angle is 18-22 °, and reference diameter is 32-120mm, and tip diameter is 36-140mm, and root diameter is 27.2-96mm, and axial pitch is 6.28-31.40mm.

2. water treatment core component as claimed in claim 1, is characterized in that described screw structure modulus m is 2; It is 1 that described helical head is counted z; Described diameter quotient q is 16mm; Described pressure angle α is 20 °.

3. water treatment core component as claimed in claim 1, is characterized in that described cylinder-like shell and column kernel adopt interference fit.

4. water treatment core component as claimed in claim 1, it is characterized in that described metal bar is ormolu material, and smelt and be prepared from by following quality formula: copper 50-70%, zinc 20-35%, tin 5-15%, nickel 5-10%, iron 0.5-1%, manganese 0.01-0.1%, rear earth element nd or cerium 0.01-0.15%, and one or more in silicon 1-3%, magnesium 1-3%, chromium 0.1-1.0%, molybdenum 0.1-1.0% and vanadium 0.1-1.0%, each constituent mass sum is 100%.

5. water treatment core component as claimed in claim 1, is characterized in that described metal bar is ormolu material, and smelts and be prepared from by following quality formula: copper 60%, zinc 25%, tin 5%, nickel 5%, iron 0.5%, manganese 0.1%, cerium 0.1%, silicon 1%, magnesium 1%, chromium 0.8%, molybdenum 1% and vanadium 0.5%.

6. water treatment core component as claimed in claim 1, is characterized in that described metal bar is ormolu material, and smelts and be prepared from by following quality formula: copper 65%, zinc 20%, tin 5%, nickel 5%, iron 0.75%, manganese 0.1%, cerium 0.15%, silicon 1%, chromium 1%, molybdenum 1% and vanadium 1%.

7. a water treatment facilities, is characterized in that this water treatment facilities adopts the water treatment core component described in claim 1-6 any one.

8. a boiler feed water treating apparatus, is characterized in that this water treatment facilities adopts water treatment core component claimed in claim 7.

9. a water treatment facilities, is characterized in that this water treatment facilities right to use in parallel requires the water treatment core component described in 1-6 any one.

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