Notched wire, notched wire element and filtration apparatus

• US 20060266695A1
• Filed: 09/22/2005
• Published: 11/30/2006
• Est. Priority Date: 05/30/2005
• Status: Active Grant

• Current Assignee: Kanagawa Kiki Kogyo Co., Ltd.
• Original Assignee: Kanagawa Kiki Kogyo Co., Ltd.
• Inventors: Phan, Thanh Trung, Takahashi, Hideto Y.
• Granted Patent: US 8,251,230 B2
• Time in Patent Office: Days
• US Class Current: 210/483
• CPC Class Codes: B01D 2201/127 with means for keeping the spacing between the pleats
• CPC Class Codes: B01D 29/48 of spirally or helically wound bodies

Abstract

A notched wire 4 that is disposed in layers in a filtration apparatus. First projection stripes 4d are formed on the top surface 4b of a base 4a at prescribed intervals in the longitudinal direction of the base 4a so as to extend in the width direction of the base 4a. Second projection stripes 4e are formed approximately at the centers of the first projection stripe 4d so as to extend between the first projection stripes 4d•4d. The second projection stripes 4e are projection stripes having an approximately semicircular cross section, for example. The second projection stripes 4e is smaller in height than the first projection stripes 4d, and the width of the second projection stripes 4e is shorter than the length of the first projection stripes 4d.

Claims

1. A notched wire disposed in layers in a filtration apparatus, comprising:

first projection stripes formed on one surface of a band plate at prescribed intervals in a longitudinal direction of the band plate so as to extend in a direction that is approximately perpendicular to the longitudinal direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and

second projection stripes extending between the first projection stripes, a height of the second projection stripes being smaller than that of the first projection stripes and a width of the second projection stripes being shorter than a length of the first projection stripes in a width direction of the band plate.

2. The notched wire according to claim 1, wherein each of the second projection stripes has a convex surface or a slant surface between a peak and an outer end in a width direction thereof.

3. The notched wire according to claim 2, wherein the second projection stripes are projection stripes having a generally semicircular cross section, a generally trapezoidal cross section, or a generally triangular cross section.

4. The notched wire according to claim 1, wherein the height of each of the second projection stripes extending between the first projection stripes varies gradually in a longitudinal direction thereof.

5. The notched wire according to claim 1, wherein each of the second projection stripes is formed approximately at a center of a width of the band plate.

12. The notched wire according to claim 2, wherein the height of each of the second projection stripes extending between the first projection stripes varies gradually in a longitudinal direction thereof.

13. The notched wire according to claim 3, wherein the height of each of the second projection stripes extending between the first projection stripes varies gradually in a longitudinal direction thereof.

14. The notched wire according to claim 2, wherein each of the second projection stripes is formed approximately at a center of a width of the band plate.

15. The notched wire according to claim 3, wherein each of the second projection stripes is formed approximately at a center of a width of the band plate.

16. The notched wire according to claim 4, wherein each of the second projection stripes is formed approximately at a center of a width of the band plate.

17. The notched wire according to claim 12, wherein each of the second projection stripes is formed approximately at a center of a width of the band plate.

18. The notched wire according to claim 13, wherein each of the second projection stripes is formed approximately at a center of a width of the band plate.

6. A notched wire disposed in layers in a filtration apparatus, comprising:

first projection stripes formed on one surface of a band plate at prescribed intervals in a longitudinal direction of the band plate so as to extend in a direction that is approximately perpendicular to the longitudinal direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and

second projection stripes extending between the first projection stripes, a height of the second projection stripes being smaller than that of the first projection stripes, each of the second projection stripes having a convex surface or a slant surface between a peak and an outer end in a width direction thereof.

7. A notched wire element comprising:

a filter frame of a filtration apparatus; and

a notched wire that is wound around the filter frame spirally in layers, the notched wire comprising;

first projection stripes formed on one surface of a band plate at prescribed intervals in a longitudinal direction of the band plate so as to extend in a direction that is approximately perpendicular to the longitudinal direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and

second projection stripes extending between the first projection stripes, a height of the second projection stripes being smaller than that of the first projection stripes and a width of the second projection stripes being shorter than a length of the first projection stripes in a width direction of the band plate.

8. A notched wire element comprising:

a filter frame of a filtration apparatus; and

a notched wire that is wound around the filter frame spirally in layers, the notched wire comprising;

first projection stripes formed on one surface of a band plate at prescribed intervals in a longitudinal direction of the band plate so as to extend in a direction that is approximately perpendicular to the longitudinal direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and

second projection stripes extending between the first projection stripes, a height of the second projection stripes being smaller than that of the first projection stripes, each of the second projection stripes having a convex surface or a slant surface between a peak and an outer end in a width direction thereof.

9. A filtration apparatus comprising:

a main body; and

a notched wire element disposed in the main body and comprising a filter frame and a notched wire that is wound around the filter frame spirally in layers, the notched wire comprising;

first projection stripes formed on one surface of a band plate at prescribed intervals in a longitudinal direction of the band plate so as to extend in a direction that is approximately perpendicular to the longitudinal direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and

second projection stripes extending between the first projection stripes, a height of the second projection stripes being smaller than that of the first projection stripes and a width of the second projection stripes being shorter than a length of the first projection stripes in a width direction of the band plate.

11. The filtration apparatus according to claim 9, wherein as a fluid or a powder flows through the notched filter element, it is filtered in two stages by first gaps S1 having the same height as the height of the first projection stripes and second gaps S2 having a height that is the height of the first projection stripes minus the height of the second projection stripes, the first and second gaps being formed between layered sections of the notched wire.

10. A filtration apparatus comprising:

a main body; and

a notched wire element disposed in the main body and comprising a filter frame and a notched wire that is wound around the filter frame spirally in layers, the notched wire comprising;

first projection stripes formed on one surface of a band plate at prescribed intervals in a longitudinal direction of the band plate so as to extend in a direction that is approximately perpendicular to the longitudinal direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and

second projection stripes extending between the first projection stripes, a height of the second projection stripes being smaller than that of the first projection stripes, each of the second projection stripes having a convex surface or a slant surface between a peak and an outer end in a width direction thereof.

19. The filtration apparatus according to claim 10, wherein as a fluid or a powder flows through the notched filter element, it is filtered in two stages by first gaps S1 having the same height as the height of the first projection stripes and second gaps S2 having a height that is the height of the first projection stripes minus the height of the second projection stripes, the first and second gaps being formed between layered sections of the notched wire.