大同工機 List of Products and Services

We have newly developed a circulation-type automatic cleaning system that continuously backwashes the element without discharging the filtrate outside the machine. By combining an ejector (vacuum generation device) with a cyclone separator, we have minimized discharge loss to the utmost by circulating the filtrate within the machine. Mechanism: Foreign substances and coarse particles on the surface of the element pass through the hopper (suction pipe) along with the filtrate and are ultimately separated into solid and liquid by the cyclone separator, with the solids being discharged outside through the discharge valve. Meanwhile, a portion of the filtrate returns to the ejector incorporated at the inlet and mixes again with the original liquid. In this way, the filtrate is circulated within the machine, allowing for continuous backwashing of the element without discharging the filtrate outside.

• Waste treatment facility

- Compatible with various types such as coarse dust, medium performance, pre-HEPA, HEPA, and ULPA. - Not only the internal filter but also the housing can be accommodated. - Built-in filters that remove particles from 0.3μm to 30μm, suitable for a wide range of industrial dust filtration applications. - Installed on the intake side of the blower to remove atmospheric dust (protecting the blower from foreign substances).

• Manufacturing Equipment

【Features】 ■ A model with long glass (oval-shaped) attached to both sides of the direct pipe ■ Long visible length, ideal for checking flow conditions and contaminants ■ Custom manufacturing available in special materials in addition to carbon steel and stainless steel ■ Can be used for low-temperature fluids with the installation of an acrylic window

• Other measuring instruments

From single types to multi types that accommodate high flow rates, we offer a diverse lineup of main components made from stainless steel and plastic. Additionally, for engineering housings, we can provide custom designs tailored to your specifications, as well as design and manufacture housings that comply with various regulations. 【Features】 ■ Models for fine and precise filtration ■ Housings that accommodate various applications and specifications ■ Filter media available in a wide variety *For more details, please download the PDF or contact us.

• others

This is a groundbreaking product that can be converted to a manual cleaning type simply by replacing the internal parts and cover of the existing strainer. Since open maintenance is no longer required, it is possible to significantly cut the costs and time associated with traditional cleaning operations. 【Features】 ■ Cleaning can be performed while the liquid is flowing ■ Screen cleaning is as simple as turning a handle ■ Debris scraped off is discharged through the drain ■ No modifications or construction of piping are necessary ■ Can be modified for products from other manufacturers We can also provide a complete set proposal, so please feel free to contact us.

• others

The "DAIDO Strainer / Sight Glass / Level Gauge Comprehensive Catalog" is a catalog from Daido Koki Co., Ltd., which designs, manufactures, and sells plant equipment including strainers, sight glasses, and level gauges. It features a variety of products such as fully automatic, maintenance-free auto strainers, cross-type, square window type, and lantern type sight glasses, as well as reflective and transparent level gauges. 【Featured Products】 ■ Filtration Equipment (Strainers / Filters) ■ Flow Indicators (Sight Glasses) ■ Liquid Level Gauges (Level Gauges) and more For more details, please refer to the catalog or feel free to contact us.

• Water Treatment Plant
• others

In the past, it was mostly used for utility piping, but in recent years, it has been utilized for various applications such as filtration for processes, aimed at labor-saving and productivity improvement, and we have numerous delivery records both domestically and internationally. We also have test units (for a fee) available for performance evaluation before purchase, so please feel free to contact us. 【Features】 ◆ Proposals tailored to customer specifications from coarse filtration to precision filtration ◆ Automatic cleaning without stopping the line (when clogging is detected and at regular intervals) ◆ Compact design for replacement of existing installations

• Water Treatment Plant

This is a polypropylene capsule-type filter. It can accommodate filter media from various series, making it suitable for use points on manufacturing lines and for low-flow filtration at lab scale. Additionally, connection types available include R1/4, R1/2, phenolic, and swage lock types. 【Features】 ■ Polypropylene capsule-type filter ■ Capable of accommodating filter media from various series ■ Suitable for low-flow filtration at use points on manufacturing lines and at lab scale *For more details, please refer to the PDF document or feel free to contact us.

• others

It is an asymmetric polyether sulfone membrane filter. Due to its asymmetric structure, it achieves a high void ratio, high flow rate, low pressure loss, and long life. The leachables are extremely low, and a small amount of rinsing can restore the non-resistance value. It is also suitable for ultrapure water production applications and the sterilization of process water. 【Features】 ■ Asymmetric polyether sulfone membrane filter ■ Achieves high void ratio, high flow rate, low pressure loss, and long life ■ Extremely low leachables and recovery of non-resistance value with a small amount of rinsing *For more details, please refer to the PDF document or feel free to contact us.

• others

This is a stainless steel metal type filter. There are three types: sintered fiber, sintered mesh, and sintered powder. For the sintered fiber and sintered mesh types, we offer two variations: pleated type and cylinder type. 【Features】 ■ Washable ■ Heat resistant ■ Stainless steel metal type filter *For more details, please refer to the PDF document or feel free to contact us.

• others

This is a pleated filter made of polypropylene. It features a unique multi-layer structure that ensures a long life and allows for the removal of gelled foreign substances. Additionally, we offer a high-flow type with an outer diameter of 80mm and a steam sterilization-compatible type. The filtration accuracy is available in nominal and absolute types. 【Features】 ■ Pleated filter made of polypropylene ■ Integrated molding, no binder, using long fiber non-woven fabric ■ Concerns about fiber shedding or binder material leaching are eliminated *For more details, please refer to the PDF document or feel free to contact us.

• others

This is a depth filter created using innovative melt-blown technology. The media section is composed of ultra-fine microfibers, providing precise filtration accuracy, and by eliminating the center core, it has achieved initial pressure loss of less than one-third of that of conventional melt-blown filters. Additionally, since no additives or binders are used in the manufacturing process, it can be safely used in the production lines of electronic components, pharmaceuticals, and food. 【Features】 ■ Continuous three-layer density gradient ■ Media section composed of ultra-fine microfibers ■ Achieves initial pressure loss of less than one-third of conventional melt-blown filters *For more details, please refer to the PDF document or feel free to contact us.

• others

It is mainly adopted for flushing purposes. It is installed between the flanges of the piping and removed after flushing. Additionally, F denotes a flat shape, C denotes a conical shape, and D denotes a shape with the tip of the cone cut off (this type has a larger filtration area compared to the same length C shape). 【Features】 ■ A strong and robust product designed for increased strength ■ Custom production using special materials is also possible.

• others

The T-shaped cylindrical element is extracted laterally by opening the cover. T1 is an L-flow type. It is used in areas with little sludge (contaminants) in the fluid, such as pipe corners and L-flow sections. T2 is a straight flow type. It has a structure where the fluid flows in a straight direction, and the element shape uses a semi-circular structure (bathtub shape), etc. T4 is an L-flow type/short model. It has an L-shaped flow, making it suitable for pipe corners, with the element (screen) positioned at the rear. 【Features】 ■ Low pressure loss, suitable for coarse filtration (T2) ■ Short model with a shorter element (T4) *For more details, please refer to the PDF document or feel free to contact us.

• others

The Y-shaped strainer allows for the extraction of a cylindrical element angled downward by opening the cover. It is suitable for small to medium diameters compared to bucket types. The Y42 is a small diameter model with a flange-type cover that uses a large element for low pressure loss. A drain shape can be selected. The Y41 is a small diameter model with a cap-type cover designed for Y-shaped strainers for 1/2” to 1” (15A to 25A). It features a structure that minimizes pressure loss by adopting a relatively large element compared to the connection size. It uses a screw-in cap for the drain section. 【Features】 ■ Suitable for small to medium diameters compared to bucket types (Y1) ■ Cast small diameter compact model (Y42) ■ Smaller than Y42 (Y41)

• others

The bucket-shaped strainer is primarily installed in horizontal piping. It has an element inside the main body, and by opening the upper cover, it can be removed, allowing the captured sludge (contaminants) to be taken out directly to the outside. The B1-3 is suitable for relatively coarse filtration of 18” (450A) or larger. It is designed for indoor use where there are height restrictions. The element shape is semi-circular (kamaboko shape), and it has a structure that keeps the height lower compared to the B1 type. 【Features】 ■ Can be installed in horizontal piping ■ Suitable for large sizes due to its easily balanced shape ■ Can accommodate height restrictions for indoor use The B2 type, like the B1 type, is primarily installed in horizontal piping. Its shape allows for easy balancing, making it suitable for larger sizes. It is suitable for finer filtration compared to the B1 type. The main body structure is of the offset type, where the outlet centerline is slightly lower than the inlet centerline. 【Features】 ■ Offset type ■ Suitable for fine filtration ■ Its shape allows for easy balancing, making it suitable for larger sizes

• others