Filtering fluid dispensing device

Patent metadata

Field	Value
Publication number	US-11813632-B2
Application number	US-201816190443-A
Country	US
Kind code	B2
Filing date	Nov 14, 2018
Priority date	Nov 14, 2017
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

A fluid dispensing device has a spool valve in a dispenser housing with a spool in a spool housing and a spool wall around the spool housing with entrance and an exit openings defined therethrough; an entrance channel in the dispenser housing proximate to the spool wall entrance opening; a force applying element in the entrance channel that applies force against the spool wall with entrance and exit ends with the exit end proximate to the spool wall; a hose adapter fitting with an entrance end extending out from and an exit end extending into the entrance and contacting the force applying element with a flow passage extending through it; and fluid communication through the hose adapter fitting flow passage through the force applying element and into an entrance opening in the spool wall; where the force applying element defines a tortuous path through which fluid must travel.

First claim

What is claimed is:

1. A fluid dispensing device ( 10 ) comprising:
(a) a spool valve ( 30 ) within a dispenser housing ( 20 ), the spool valve comprising a spool ( 40 ) within a spool housing ( 24 ), the spool housing comprising a spool wall ( 50 ) around the spool housing with at least one entrance opening ( 52 ) and at least one exit opening ( 54 ) defined through the spool wall;
(b) an entrance channel ( 22 ) in the dispenser housing proximate to the entrance opening in the spool wall;
(c) a force applying element ( 60 ) within the entrance channel, where the force applying element applies force against the spool wall around the entrance opening, the force applying element being generally cylindrical with opposing entrance ( 62 ) and exit ( 64 ) ends with the exit end most proximate to the spool wall,
said force applying element consisting of a porous basket element having a sequence of plates design, each plate connected to one another by spacers ( 69 ), the sequence of plates spaced between the entrance and exit ends, including a solid plate ( 67 ) that serves as a barrier ( 700 ) that prevents linear flow and forces radial flow by preventing a straight line flow path through the force applying element,
the force applying element having a primary axis, the force applying element forcing fluid flow radially through the force applying element from the primary axis and around the barrier,
wherein the force applying element forms a basket to collect particles with the solid plate serving as the bottom of the basket and the entrance end serving as the top of the basket with a brim broader than the diameter of the basket; and

(d) a hose adapter fitting ( 70 ) that has opposing entrance ( 72 ) and exit ( 74 ) ends, where the entrance end extends out from the dispenser housing and the exit end extends into the entrance channel and is in contact with the force applying element, wherein the hose adapter fitting defines a flow passage ( 76 ) extending through it from entrance end to exit end; and

wherein there is fluid communication all the way through the flow passage of the hose adapter fitting into and through the force applying element and into an entrance opening in the spool wall; and wherein the fluid dispensing device is characterized by the force applying element defining a tortuous flow path through which fluid must travel to go through the force applying element from entrance end through exit end.

2. The fluid dispensing device of claim 1 , wherein the force applying element is a separate piece from the hose adapter fitting.

3. The fluid dispensing device of claim 1 , the device having two or more entrance openings through the spool wall, and separate entrance channels in the dispenser housing opening to one of the entrance openings in the spool wall and each entrance channel having said force applying element and said hose adapter fitting inserted therein.

4. The fluid dispensing device of claim 1 , wherein the hose adapter fitting applies force to the spool wall through the force applying element such that the spool wall deflects against the spool when the force is applied.

5. The fluid dispensing device of claim 1 , wherein at least one entrance opening through the spool wall has a nib ( 56 ) around it that protrudes towards and contacts the force applying element and against which the force applying element applies force to the spool wall.

6. The fluid dispensing device of any one previous claim, wherein the force applying element comprises an entrance end plate ( 66 ) and an exit end plate ( 68 ) each having a larger diameter (D) than the rest of the force applying element and having a hole extending all the way through their thickness, a porous basket element ( 600 ) attached to and extending between the entrance end plate and exit end plate with the porous basket element spaced apart from the exit end plate, and the barrier ( 700 ) that prevents linear flow through the entrance end plate through the porous basket element and through the exit end plate forces radial flow out from the porous basket element and around the barrier to reach the hole through the exit end plate.

7. The fluid dispensing device of claim 6 , wherein the porous basket element comprises said sequence of plates ( 65 ), each defining a hole through their thickness, the plates having primary surfaces and spaced apart by a plate spacing (d) and connected with the primary surfaces of the plates facing one another and aligned sequentially from the entrance end plate to the exit end plate with fluid communication between the plates through the holes they define and radially between the plates, and where the barrier is a solid plate proximate to the exit end plate.

8. The fluid dispensing device of claim 7 , wherein the plate spacing between any two plates of the force applying element is 0.8 millimeters or less and at the same time 0.1 millimeters or more as measured between adjacent primary surfaces.

9. The fluid dispensing device of claim 7 , wherein the force applying element has said solid plate adjacent to the exit end plate.

10. The fluid dispensing device of claim 8 , wherein the force applying element has said solid plate adjacent to the exit end plate.

11. A fluid dispensing device ( 10 ) comprising:
(a) a spool valve ( 30 ) within a dispenser housing ( 20 ), the spool valve comprising a spool ( 40 ) within a spool housing ( 24 ), the spool housing comprising a spool wall ( 50 ) around the spool housing with at least one entrance opening ( 52 ) and at least one exit opening ( 54 ) defined through the spool wall;
(b) an entrance channel ( 22 ) in the dispenser housing proximate to the entrance opening in the spool wall;
(c) a force applying element ( 60 ) within the entrance channel, where the force applying element applies force against the spool wall around the entrance opening, the force applying element being generally cylindrical with opposing entrance ( 62 ) and exit ( 64 ) ends with the exit end most proximate to the spool wall,
said force applying element consisting of a porous cylinder with radial holes ( 240 ) therethrough and having a solid end ( 230 ) that serves as a barrier ( 700 ) that prevents linear flow and forces radial flow by preventing a straight line flow path through the force applying element,
the force applying element having a primary axis, the force applying element forcing fluid flow radially through the force applying element from the primary axis and around the barrier,
wherein the force applying element forms a basket to collect particles with the solid end serving as the bottom of the basket and the entrance end serving as the top of the basket with a brim broader than the diameter of the basket; and

(d) a hose adapter fitting ( 70 ) that has opposing entrance ( 72 ) and exit ( 74 ) ends, where the entrance end extends out from the dispenser housing and the exit end extends into the entrance channel and is in contact with the force applying element, wherein the hose adapter fitting defines a flow passage ( 76 ) extending through it from entrance end to exit end; and
wherein there is fluid communication all the way through the flow passage of the hose adapter fitting into and through the force applying element and into an entrance opening in the spool wall; and wherein the fluid dispensing device is characterized by the force applying element defining a tortuous flow path through which fluid must travel to go through the force applying element from entrance end through exit end.

12. The fluid dispensing device of claim 11 , wherein the force applying element is a separate piece from the hose adapter fitting.

13. The fluid dispensin

Assignees

• Dow Global Technologies Llc

Inventors

• Schroer Daniel R
• Dotson Larry
• Heckert Michael F
• Stewart Greg T

Classifications

• B05B7/1209 Primary

  the controlling means for each liquid or other fluent material being manual and interdependent · CPC title

• B05B1/3026 Primary

  Gate valves; Sliding valves; Cocks (B05B1/326 takes precedence) · CPC title

• B05B7/0025

  with a compressed gas supply · CPC title

• B05B7/2497

  several liquids from different sources being supplied to the discharge device · CPC title

• B05B12/002

  Manually-actuated controlling means, e.g. push buttons, levers or triggers (for single units B05B11/00) · CPC title