Integrated c-type knife gate valve

Abstract

The utility model discloses an integrated C type knife gate valve relates to the valve field, it includes valve body, driving part, valve stem, gate, filler, filler cover and valve seat, be equipped with the filler groove of the filler placement in the valve body, the inside edge of filler groove bottom is equipped with the bevel and its outside edge is equipped with the arc mouth. The utility model has the advantages of good sealing, reliable working.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically to an integrated C-type knife gate valve. Background Technology

[0002] In existing knife gate valves, the bottom of the packing groove in the valve body is generally machined into a flat shape. After the packing is installed and the packing gland is installed, the packing may not fit properly with the bottom of the packing groove, which can lead to leakage from the packing when the valve is in use. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides an integrated C-type knife gate valve with good sealing performance and high operational reliability.

[0004] The technical solution adopted in this utility model is an integrated C-type knife gate valve, which includes a valve body, a drive component, a valve stem, a gate, packing, a packing cover, and a valve seat. The valve body is provided with a packing groove for placing the packing. The inner edge of the bottom of the packing groove is provided with an angle and the outer edge is provided with an arc. The valve body has irregularly shaped reinforcing ribs at the positions corresponding to the packing grooves on its exterior.

[0005] The valve body has a constricted neck with a reduced diameter below the corresponding packing groove, and the valve body has an enlarged inner cavity below the constricted neck.

[0006] The bottom of the valve body is provided with a gate support block at the position corresponding to the gate, and the periphery of the gate support block is tangent to the inner wall of the valve body.

[0007] The valve body is provided with a pressure ring, and an elastic element is provided between the pressure ring and the valve seat. The valve seat is sealed and slides in contact with the valve body and the pressure ring respectively.

[0008] The elastic element is an elastic O-ring.

[0009] The valve seat has an annular boss on its outer circumference, and the valve body has a limiting step corresponding to the annular boss on its inner wall. The beneficial effects of this utility model are: This technical solution, through the arc and bevel design of the packing groove, can more effectively squeeze and fix the packing when adjusting the packing gland. Because the packing is a woven material with uneven physical properties, the edges and corners are prone to hardening when squeezed. The arc not only gives the edges and corners of the packing a certain amount of room to move, but also makes the side deformation of the packing fit more evenly with the bottom of the packing groove, increasing the side sealing ability, but also increases the pressure at the bottom, thereby increasing the bottom sealing ability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the integrated C-type knife gate valve according to an embodiment of the present invention.

[0011] Figure 2 This is a cross-sectional view of an integrated C-type knife gate valve.

[0012] Figure 3 This is a schematic diagram of the valve body.

[0013] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0014] Figure 5 for Figure 2 A magnified view of a section at point B. Detailed Implementation

[0015] The embodiments of this utility model will be further described below with reference to the accompanying drawings: As shown in the figure, the integrated C-type knife gate valve includes a valve body 1, a drive component 2, a valve stem 3, a gate 4, packing 5, a packing cover 6, and a valve seat 7. The valve body 1 is provided with a packing groove 8 for placing the packing 5. The inner edge of the bottom of the packing groove 8 is provided with an angle 9, and its outer edge is provided with an arc 10. This technical solution, through the design of the arc and angle of the packing groove, can more effectively squeeze and fix the packing when adjusting the packing gland. Because the packing is a woven material with uneven physical properties, the edges and corners are prone to hardening when squeezed. The arc not only provides a certain amount of movement space for the edges and corners of the packing, but also allows the side deformation of the packing to fit more closely with the bottom of the packing groove, increasing the side sealing ability, and also increases the bottom pressure, thereby increasing the bottom sealing ability. The valve body 1 has an irregularly shaped reinforcing rib 11 at the position corresponding to the packing groove 8 on the outside. This rib strengthens the packing installation position and the strength of the valve body cavity, effectively preventing valve leakage caused by the packing groove deforming and expanding to both sides due to excessive packing compression, and effectively preventing deformation of the valve body cavity surface.

[0016] The valve body 1 has a narrowed neck 12 with a reduced diameter below the corresponding packing groove 8, and the valve body 1 has an enlarged inner cavity 13 below the narrowed neck 12, which has the advantage of facilitating demolding when casting the valve body.

[0017] The valve body 1 has a gate support block 14 at the bottom of the corresponding gate 4. The periphery of the gate support block 14 is tangent to the inner wall of the valve body 1, which has the advantages of not being easy to stick to the slurry and not being easy to get stuck with slag.

[0018] The valve body 1 is provided with a pressure ring 15, and an elastic element 16 is provided between the pressure ring 15 and the valve seat 7. The valve seat 7 is sealed and slides with the valve body 1 and the pressure ring 15 respectively. The elastic element 16 is an elastic O-ring. Relying on the compensation of the elastic O-ring, the dynamic cooperation between the valve seat and the gate is realized, ensuring that the valve seat fits the gate, so that the valve as a whole has good sealing performance.

[0019] The valve seat 7 has an annular boss 17 on its outer circumference, and the valve body 1 has a limiting step 18 corresponding to the annular boss 17 on its inner wall surface. The limiting step and the annular boss are... In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modification that utilizes the inventive concept will be included within the scope of protection of this patent.

Claims

1. An integrated C-type knife gate valve, comprising a valve body (1), a drive component (2), a valve stem (3), a gate (4), packing (5), a packing cover (6), and a valve seat (7), characterized in that: The valve body (1) is provided with a packing groove (8) for placing packing (5). The inner edge of the bottom of the packing groove (8) is provided with an angle (9) and the outer edge is provided with an arc (10).

2. The integrated C-type knife gate valve according to claim 1, characterized in that: The valve body (1) has irregularly shaped reinforcing ribs (11) at the position corresponding to the packing groove (8) on the outside.

3. The integrated C-type knife gate valve according to claim 1, characterized in that: The valve body (1) has a constricted neck (12) with a reduced diameter below the corresponding packing groove (8), and the valve body (1) has an enlarged inner cavity (13) below the constricted neck (12), with an arc-shaped surface (19) on the upper wall of the inner cavity (13).

4. The integrated C-type knife gate valve according to claim 1, characterized in that: The valve body (1) has a gate support block (14) at the bottom of the corresponding gate (4), and the periphery of the gate support block (14) is tangent to the inner wall of the valve body (1).

5. The integrated C-type knife gate valve according to claim 1, characterized in that: The valve body (1) is provided with a pressure ring (15), and an elastic element (16) is provided between the pressure ring (15) and the valve seat (7). The valve seat (7) is in a sealed sliding fit with the valve body (1) and the pressure ring (15) respectively.

6. The integrated C-type knife gate valve according to claim 5, characterized in that: The elastic element (16) is an elastic O-ring.

7. The integrated C-type knife gate valve according to claim 5, characterized in that: The valve seat (7) has an annular boss (17) on its outer circumference, and the valve body (1) has a limiting step (18) corresponding to the annular boss (17) on its inner wall surface.

Images