Double sealing valve

• US 9,638,335 B2
• Filed: 01/08/2015
• Issued: 05/02/2017
• Est. Priority Date: 01/08/2015
• Status: Active Grant

• Current Assignee: King Lai Hygenic Materials Co., Ltd.
• Original Assignee: King Lai Hygenic Materials Co., Ltd.
• Inventors: Huang, Shu-Mei
• Primary Examiner(s): McManmon, Mary
• Assistant Examiner(s): COLON MORALES, DAVID
• Application Number:
  US14/592,675
• Publication Number:
  US 20160201810A1
• Time in Patent Office: 845 Days
• Field of Search: 251195, 251167, 251197, 251202-203
• CPC Class Codes: F16K 27/044 slide valves with flat obturating members
• CPC Class Codes: F16K 3/0254 being operated by particular means
• CPC Class Codes: F16K 3/029 with two or more gates
• CPC Class Codes: F16K 3/184 by means of cams
• CPC Class Codes: F16K 3/3165 with rollers or balls
• CPC Class Codes: F16K 31/122 the fluid acting on a piston F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence
• CPC Class Codes: F16K 51/02 specially adapted for high-vacuum installations

Abstract

A double sealing valve includes a power cylinder having a driving axle, a valve body formed of a first and a second valve members, and a seal plate assembly within the valve body. Therein, the first valve member has an axle bore for the driving axle to pass through, and the second valve member has two valve holes oppositely disposed. The seal plate assembly has a driving frame connected to the driving axle, with plural roller assemblies disposed around the driving frame. The seal plate assembly has two seal plates disposed between two faces of the driving frame and the valve body, respectively. Each seal plate has plural driving grooves corresponding to the roller assemblies. The driving axle drives the seal plate assembly to seal the valve holes, with a sealing force produced therebetween by use of the roller assembly and the driving groove.

Claims

1. A double sealing valve, comprising:

at least a power cylinder provided with a driving axle capable of axially moving;

a valve body formed of a hollow first valve member and a hollow second valve member, the first valve member having a cylinder seat for receiving the power cylinder, an axle bore disposed on the cylinder seat for the driving axle to pass through into the first valve member, the second valve member provided with two valve holes oppositely disposed thereon;

a seal plate assembly disposed in the valve body and having a driving frame connected to one end of the driving axle, plural roller assemblies disposed around the driving frame, with each of the roller assemblies having a roller seat, the roller seat formed in a polygonal shape with at least three sides and having at least three corners, the roller seat axially disposed on a periphery of the driving frame by at least a roller axle;

furthermore, the seal plate assembly has two seal plates, while each of the seal plates is disposed between one of the two sides of the driving frame and the valve body, respectively, and each of the seal plate is concavely provided with plural driving grooves in an amount corresponding to the amount of the roller assemblies, while two roller bearings are disposed on two corners of the roller seat of each roller assembly for contacting the corresponding driving groove, such that each of the roller bearings is allowed to slide in the corresponding driving groove.

2. The double sealing valve of claim 1, wherein the driving groove is formed of a stop portion and a slope portion, while the stop portion is disposed on one side of the driving groove facing toward the driving axle, and the slope portion is disposed on the other side of the driving groove opposite to the driving axle.

3. The double sealing valve of claim 2, wherein a depth from the stop portion to the slope portion of the driving groove varies from deep to shallow.

4. The double sealing valve of claim 1, wherein at least a seal member is disposed around the periphery of the seal plate.

5. The double sealing valve of claim 1, wherein the two seal plates are connected by at least an elastic member.

6. The double sealing valve of claim 1, wherein one end of the driving frame opposite to the driving axle is provided with at least a buffer member.

7. The double sealing valve of claim 6, wherein the buffer member is in axial alignment with the driving axle.

8. The double sealing valve of claim 1, wherein the second valve member is formed of two side boards and at least an arc board, and the arc board has an opening for being connected with the first valve member, while an inner spaces of the first valve member and an inner space of the second valve member are connected, such that the driving axle is allowed to pass through into the first valve member and the second valve member from the axle bore.

9. The double sealing valve of claim 8, wherein at least a seal member is disposed on a periphery of the opening, such that the first valve member and the second valve member are air-tightly connected.

10. The double sealing valve of claim 1, wherein the roller seat is in a shape of a triangle, with the roller axle disposed on one corner thereof and two roller bearings disposed on the other two corners thereof, respectively.

11. The double sealing valve of claim 1, wherein the roller seat is in a rhombus shape, with two roller axles disposed on two corners of the roller seat placed on a vertical axis thereof and two roller bearings disposed on the other two corners on a horizontal axis thereof, respectively.