Discharge valve

Patent metadata

Field	Value
Publication number	US-10947039-B2
Application number	US-201716470656-A
Country	US
Kind code	B2
Filing date	Nov 23, 2017
Priority date	Dec 21, 2016
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A discharge valve for discharging a food product may be arranged at a low point of a vessel. The discharge valve includes a valve body, a valve seat, a valve plug and an arm. The valve plug is attached to a first end of the arm and a second end of the arm is attached to a pivot point that is arranged inside the valve body. The arm is configured to pivot the valve plug between a valve closed position where the valve plug abuts the valve seat, and a valve open position where the valve plug is pivoted away from the valve seat, to a location where the valve plug is positioned at least partly within the valve body.

First claim

The invention claimed is:

1. A discharge valve configured to be arranged at a low point of a vessel for discharging a food product from the vessel, the valve comprising a valve body, a valve seat, a valve plug, and an arm, wherein:
the valve plug is attached to a first end of the arm,
a second end of the arm is attached to a pivot point,
the pivot point is arranged inside the valve body, and
the arm is configured to pivot the valve plug between
a valve closed position where the valve plug abuts the valve seat, and
a valve open position where the valve plug is pivoted away from the valve seat, to a location where the valve plug is positioned at least partly within the valve body, wherein the discharge valve comprises

a first part configured to be fixedly attached to a bottom wall of the vessel,
a second part that is releaseingly attached to the first part and connected to the arm, and
a swing arm that is connected to the second part and supports the second part when the second part is released from the first part, the swing arm being configured to carry the second part for movement of the second part relative to the vessel, the second part being configured to carry the arm during the movement of the second part.

2. The valve according to claim 1 , wherein the valve seat comprises a circular seat outlet that has a seat outlet center, a seat outlet radius and faces the valve body, and
the pivot point is located, as seen in a radial direction of the circular seat outlet, at a distance from the seat outlet center that is greater than the seat outlet radius.

3. The valve according to claim 2 , wherein every part of the second end of the arm that is attached to the pivot point is located, as seen in the radial direction of the circular seat outlet, at a distance from the seat outlet center that is greater than the seat outlet radius.

4. The valve according to claim 2 , wherein the valve body comprises a circular body inlet that has a body inlet center, a body inlet radius and faces the seat outlet,
the body inlet radius is larger than the seat outlet radius, and
the body inlet center is offset from the seat outlet center, in the radial direction of the circular seat outlet and towards the pivot point.

5. The valve according to claim 1 , wherein
the first part comprises a first part flange,
the second part comprises a second part flange, and
the valve comprises a bracket and a clamp arrangement that are configured to attach respectively release the second part flange and the first part flange to respectively from each other.

6. The valve according to claim 5 , wherein
the valve seat has a circular shape, and
the first part flange has a circular shape that is
larger than
parallel to, and
in its radial direction, offset from the circular shape of the valve seat.

7. The valve according to claim 5 , wherein
the second part flange comprises an inclined outer surface,
the bracket comprises a resilient element configured to impose a force on the inclined outer surface of the second part flange, for attaching the second part flange to the first part flange.

8. The valve according to claim 1 , wherein the valve plug comprises a concave surface that is configured to, when the valve plug is in the valve closed position, face an inner space of the vessel on which the valve is arranged.

9. The valve according to claim 1 , wherein
an upper surface of the valve plug is, when the arm is in the valve closed position, flush with an upper surface of the valve seat, and
the upper surface of the valve seat is configured to be flush with an inner surface of the bottom wall of the vessel.

10. The valve according to claim 1 , wherein
the pivot point is an axle that penetrates the body,
the axle is configured to be rotated by an actuator located outside the body.

11. A vessel comprising a discharge valve according to claim 1 .

12. A vessel comprising
a discharge valve according to claim 1 , wherein
the swing arm is connected to a support structure that is fixed in relation to the vessel.

13. The vessel according to claim 11 , comprising
an inner space, and
a food product that is located in the inner space, wherein
the discharge valve is arranged to discharge the food product when the arm is in the valve open position.

14. A method of operating a vessel according to claim 13 , the food product having the form of powder, the method comprising
emptying the food product from the vessel,
separating the second part of the discharge valve from the first part of the discharge valve, and
dry-cleaning the first part and the second part of the discharge valve.

15. The valve according to claim 1 , wherein the first part comprises the valve seat and the second part comprises the valve body.

16. A The valve according to claim 1 ,
wherein when in the valve closed position, the valve plug is positioned outside the valve body and abuts the valve seat at a location that is outside the valve body, and
wherein when in the valve open position, the valve plug is pivoted away from the valve seat, to a location where the valve plug is positioned at least partly within the valve body.

Assignees

• Tetra Laval Holdings & Finance

Inventors

• Odet Frédéric
• Malecot Blandine
• Lorry Florent

Classifications

• F16K27/0227

  with the valve members swinging around an axis located at the edge of or outside the valve member · CPC title

• F16K1/2057

  the sealing being arranged on the valve seat · CPC title

• B65G65/40

  Devices for emptying otherwise than from the top · CPC title

• B65D90/623 Primary

  having a rotational motion · CPC title

• F16K1/20 Primary

  with axis of rotation arranged externally of valve member · CPC title