Vertical slide backwash valve

Patent metadata

Field	Value
Publication number	US-9707499-B2
Application number	US-201414206374-A
Country	US
Kind code	B2
Filing date	Mar 12, 2014
Priority date	Mar 15, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

Provided is a backwash valve comprising a body including a central tube extending along a length of the body, a first pool port and first filter port axially aligned at a first position along the body length, a second pool port and second filter port axially aligned at a second position along the body length, and a waste port; and a sliding gate including a stem connected to a gate body, the gate body including first and second chambers separated by an internal wall; the sliding gate movable between a filter position wherein fluid communication is provided among the first filter port, first chamber, and first pool port, and a backwash position wherein fluid communication is provided among the first filter port, second fluid chamber, and second pool port, and between the second filter port and waste port.

First claim

What is claimed is:

1. A backwash valve for reversing fluid flow comprising,
a body comprising,
a central tube extending from a first end to a second end along a length of the body,
a first pool port and a first filter port axially aligned with one another at a first position along the length of the body,
a second pool port and a second filter port axially aligned with one another at a second position along the length of the body, and
a waste port; and

a sliding gate including a stem connected to a gate body, the gate body comprising a first chamber and a second chamber, the second chamber separated from the first chamber by an internal wall; the sliding gate linearly reciprocable between a filter position wherein fluid communication is provided among the first filter port, the first chamber, and the first pool port and at least one of said first and second filter ports is a fluid exit from said backwash valve, and a backwash position wherein fluid communication is provided among the first filter port, the second fluid chamber, and the second pool port, and between the second filter port and the waste port, and said at least one of said first and second filter ports is a fluid return to said backwash valve.

2. The backwash valve of claim 1 , wherein the backwash valve is reconfigurable between a first configuration wherein the sliding gate is movable from the filter position to the backwash position by sliding the stem along the length of the body in a first direction relative to the body, and a second configuration wherein the sliding gate is movable from the filter position to the backwash position by sliding the stem along the length of the body in a second direction relative to the body.

3. The backwash valve of claim 1 , wherein the waste port is fluidly coupled to the second filter port via a discharge opening, the sliding gate provided with a shelf gate that blocks fluid flow through the discharge opening when the sliding gate is in the filter position.

4. The backwash valve of claim 3 , the body further comprising a discharge port shoulder that defines the discharge opening, and the shelf gate comprising a gasket, wherein in the filter position the shelf gate engages the discharge port shoulder via a linear movement that is in a direction normal to the discharge port shoulder so that the gasket seals the discharge opening.

5. The backwash valve of claim 4 , further comprising a handle connected to the stem, the handle including a locking well, wherein the gasket compressingly engages the discharge port shoulder when a follower is locked in the locking well.

6. The backwash valve of claim 1 , the sliding gate comprising a faceplate including a first flow opening extending through the faceplate and fluidly coupled to the first chamber, a second flow opening extending through the faceplate and fluidly coupled to the second chamber, and a flange located on a longitudinal side of the faceplate, the flange including a sinusoidal or scalloped design.

7. The backwash valve of claim 1 , further comprising a faceplate including a first stem mount proximate the first chamber and a second stem mount proximate the second chamber, wherein the stem includes a sliding gate connector configured to removably attach to the first stem mount and the second stem mount, and wherein, when the backwash valve is in a first configuration, the sliding gate connector is attached to the first stem mount and the sliding gate is movable from the filter position to the backwash position by sliding the stem along the length of the body in a first direction, and when the backwash valve is in a second configuration, the sliding gate connector is attached to the second stem mount and the sliding gate is movable from the filter position to the backwash position by sliding the stem along the length of the body in a second direction.

8. A backwash valve for reversing fluid flow comprising,
a body comprising,
a central tube extending from a first end to a second end along a length of the body,
a first pool port and a first filter port axially aligned with one another at a first position along the length of the body,
a second pool port and a second filter port axially aligned with one another at a second position along the length of the body, and
a waste port; and

a sliding gate including a stem removably connected to a gate body, the gate body comprising a first chamber and a second chamber, the second chamber separated from the first chamber by an internal wall; the sliding gate linearly reciprocable between a filter position wherein fluid communication is provided among the first filter port, the first chamber, and the first pool port, and at least one of said first and second filter ports is a fluid exit from said backwash valve, and a backwash position wherein fluid communication is provided among the first filter port, the second fluid chamber, and the second pool port, and between the second filter port and the waste and said at least one of said first and second filter ports is a fluid return to said backwash valve;
wherein the backwash valve is reconfigurable between a first configuration wherein the sliding gate is movable from the filter position to the backwash position by sliding the stem along the length of the body in a first direction relative to the body, and a second configuration wherein the sliding gate is movable from the filter position to the backwash position by sliding the stem along the length of the body in a second direction relative to the body.

9. The backwash valve of claim 8 , wherein the sliding gate includes a sliding gate connector, wherein in the first configuration the sliding gate connector is attached to a first end of the gate body, and in the second configuration the sliding gate connector is attached to a second end of the gate body.

10. The backwash valve of claim 8 , wherein the waste port is fluidly coupled to the second filter port via a discharge opening, the sliding gate provided with a shelf gate for blocking fluid flow through the discharge opening when the sliding gate is in the filter position, the body further comprising a discharge port shoulder that defines the discharge opening, and the shelf gate comprising a gasket, wherein in the filter position the shelf gate engages the discharge port shoulder via a linear movement that is in a direction normal to the discharge port shoulder so that the gasket seals the discharge opening.

11. The backwash valve of claim 10 , further comprising a handle connected to the stem, the handle including a locking well, wherein locking a follower in the locking well causes the gasket to compressingly engage the discharge port shoulder.

12. A backwash valve for reversing fluid flow comprising,
a body including,
a central tube extending from a first end to a second end along a length of the body,
a first pool port and a first filter port axially aligned with one another at a first position along the length of the body,
a second pool port and a second filter port axially aligned with one another at a second position along the length of the body, and
a waste port; and

a sliding gate linearly reciprocable along a length of the body between a filter position and a backwash position, the sliding gate including a stem connected to a gate body, the gate body comprising a top wall, a bottom wall, and two sidewalls defining a first chamber and a second chamber, the second chamber separated from the first chamber by an internal wall; wherein, in the filter position, (i) a first axial flow path is provided among the first filter port, the first chamber, and the first pool port, (ii) a second axial flow path is provided among the s

Assignees

• Hayward Ind Inc

Inventors

• Willis Vance Elliot
• Corn Benjamin Isaac
• Durham Kenneth Harvey
• Mercer Michael Damion

Classifications

• Y10T137/87249

  Multiple inlet with multiple outlet · CPC title

• Y10T137/86549

  Selective reciprocation or rotation · CPC title

• E04H4/16

  specially adapted for cleaning · CPC title

• Y10T137/86879

  Reciprocating valve unit · CPC title

• Y10T137/87161

  With common valve operator · CPC title