Limiting valve seat

Abstract

The utility model discloses a limit valve seat, the top of the limit valve seat is provided with an inner limit groove, the bottom of the inner limit groove is an inclined plane, the inner limit groove is matched with a rotating ball body, the middle section of the inner limit groove is sunken downwards to form an accommodating groove, and attachments on the rotating ball body can be accommodated in the accommodating groove, so that the damage of the attachments to the limit valve seat is avoided. A plurality of shrinkage grooves are formed in the outer side face of the limiting valve seat, and the influence on the limiting valve seat when the rotating ball body expands with heat and contracts with cold can be avoided by arranging the shrinkage grooves.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a limit valve seat. Background Art

[0002] The existing valve for the passage of gas or liquid is mainly composed of a valve body, a handle and a rotating ball. The rotating ball is arranged in the valve body, and the handle is connected to the rotating ball in the valve body through a connecting rod. The valve can be opened and closed by driving the rotating ball to rotate by the handle.

[0003] The valve body is mainly composed of the valve body and the side covers on both sides. The side covers and the valve body are separated by a limit valve seat to limit, protect and improve the sealing effect of the rotating ball. The existing limit valve seat structure is relatively ordinary, and the design purpose of limiting, protecting and sealing is achieved by setting an inclined groove or arc groove on the inner side of the limit valve seat to match the rotating ball.

[0004] However, during the use of the existing valve, attachments may be attached to the outer side of the rotating ball. When the handle drives the rotating ball to rotate, the rotating ball will drive the attachments to hit the limit valve seat, which will cause damage to the limit valve seat during long-term use. In addition, the rotating ball will squeeze the limit valve seat due to thermal expansion and contraction caused by changes in ambient temperature, causing damage to the limit valve seat.

[0005] Therefore, there is a need for a limit valve seat that can effectively reduce the impact of ambient temperature changes and the presence of attachments on the limit valve seat. Utility Model Content

[0006] The main purpose of the utility model is to provide a limit valve seat which can effectively reduce the influence of the change of ambient temperature and the presence of attachments on the limit valve seat.

[0007] The utility model provides a limit valve seat, the limit valve seat is in the shape of a circular ring, the top of the limit valve seat is provided with an inner limit groove with an inclined bottom and adapted to a rotating ball, the middle section of the inner limit groove is recessed downward to form a receiving groove, and the attachments on the rotating ball can be received in the receiving groove, thereby preventing the attachments from causing damage to the limit valve seat;

[0008] A plurality of contraction grooves are arranged on the outer side surface of the limit valve seat, and the contraction grooves are arranged to avoid the influence of the rotating ball on the limit valve seat when it expands and contracts.

[0009] Preferably, an outer limiting groove with an inclined top is provided on the bottom of the limiting valve seat.

[0010] The beneficial effects of the limit valve seat of the utility model are:

[0011] 1. By providing a receiving groove, the attachments on the rotating ball can be accommodated in the receiving groove, thereby avoiding damage to the limit valve seat.

[0012] 2. By arranging a contraction groove on the outer side of the limit valve seat, the influence of thermal expansion and contraction of the rotating ball on the limit valve seat can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the limit valve seat of the utility model;

[0014] Figure 2 It is a top view of the limit valve seat of the utility model;

[0015] Figure 3 It is a bottom view of the limit valve seat of the utility model;

[0016] Numbers in the figure: 1, limit valve seat, 11, inner limit groove, 12, outer limit groove, 13, accommodating groove, 14, contraction groove.

[0017] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] Reference Figures 1 to 3 , an embodiment of the limit valve seat of the utility model is proposed:

[0020] A limit valve seat 1 is in the shape of a circular ring.

[0021] An inner limit groove 11 with an inclined bottom and adapted to the rotating ball is arranged on the top of the limit valve seat 1, and an outer limit groove 12 with an inclined top is arranged on the bottom of the limit valve seat 1. The middle section of the inner limit groove 11 is recessed downward to form a receiving groove 13, and the attachments on the rotating ball can be accommodated in the receiving groove 13, thereby preventing the attachments from causing damage to the limit valve seat 1.

[0022] Six contraction grooves 14 are arranged on the outer side surface of the limit valve seat 1 . The contraction grooves 14 can prevent the limit valve seat 1 from being affected by thermal expansion and contraction of the rotating ball.

[0023] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A limit valve seat, characterized in that: The limit valve seat is in the shape of a circular ring, and an inner limit groove with an inclined bottom and adapted to the rotating ball is arranged on the top of the limit valve seat, and the middle section of the inner limit groove is recessed downward to form a receiving groove, and the attachments on the rotating ball can be received in the receiving groove, thereby preventing the attachments from causing damage to the limit valve seat; A plurality of contraction grooves are arranged on the outer side surface of the limit valve seat, and the contraction grooves are arranged to avoid the influence of the rotating ball on the limit valve seat when it expands and contracts.

2. The limit valve seat according to claim 1, characterized in that: An outer limiting groove with an inclined top is arranged on the bottom of the limiting valve seat.

Images