Valve body casting with cross mark

Abstract

The utility model discloses a valve body casting with a cross mark, and relates to the field of valves. The valve body casting with the cross mark comprises a casting gate valve body, the casting gate valve body comprises a gate valve seat and fluid pipelines integrally formed on the two sides of the gate valve seat, the gate valve seat comprises a U-shaped seat body and a protruding type sealing part integrally formed on the inner wall of the U-shaped seat body, and a U-shaped protrusion is arranged in the middle of the protruding type sealing part. The protruding type sealing part protrudes inwards from the inner wall of the fluid pipeline, and the two sides of the protruding type sealing part extend downwards to form arc faces. According to the valve body casting with the cross mark, a traditional groove type protruding sealing part is changed into a protruding sealing part, the matched valve plate is designed, and a groove is formed in the outer surface of the valve plate, so that the valve plate is clamped on the outer surface of the protruding sealing part for sealing; impurities in fluid in a pipeline can fall on the two sides under the action of gravity when flowing through the protruding type sealing part, and the impurities are prevented from affecting the sealing effect of the gate plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is valve body casting with cross mark. BACKGROUND

[0002] Valve body casting is a valve body shell produced through casting process, has the characteristics of good integrity, high strength and low manufacturing cost, has better explosion-proof performance when coping with high pressure pipeline, according to different uses, contains various valve body castings, and the current common gate valve body on market is also made using the same process, when casting, there is cross mark integrally formed on the surface, the horizontal axis and vertical axis of cross mark coincide with the pipeline axis and valve seat axis respectively, for identification during subsequent processing.

[0003] However, the current common gate valve body on market usually sets the concave convex sealing part in the middle, realizes sealing when the gate plate is inserted into the concave convex sealing part, however, in actual use, since the current convex sealing part is designed with groove, if the fluid flow rate is slow when fluid flows through the valve seat, impurities in the fluid will form accumulation at the sealing groove, when the valve plate moves down to seal, impurities at the bottom will be extruded, not only there is the risk of damaging the gate plate, but also the main problem is that sealing cannot be realized, therefore, the valve body casting with cross mark is provided to solve the above problems. SUMMARY

[0004] In view of the defects of the prior art, the valve body casting with cross mark is provided, which solves the problem that the current convex sealing part is designed with groove, which leads to that if the fluid flow rate is slow when fluid flows through the valve seat, impurities in the fluid will form accumulation at the sealing groove, when the valve plate moves down to seal, impurities at the bottom will be extruded, not only there is the risk of damaging the gate plate, but also the main problem is that sealing cannot be realized.

[0005] To achieve the above purpose, the utility model discloses a valve body casting with cross mark, which comprises a cast gate valve body, the cast gate valve body comprises a gate valve seat and fluid pipelines integrally formed on both sides of the gate valve seat, the gate valve seat comprises a U-shaped seat body and a convex sealing part integrally formed on the inner wall of the U-shaped seat body, the middle part of the convex sealing part is provided with a U-shaped convex, the convex sealing part protrudes inward from the inner wall of the fluid pipeline, and the two sides of the convex sealing part extend downward to form a circular arc surface.

[0006] Preferably, the outer wall of the gate valve seat is integrally formed with a cross-shaped mark, the cross-shaped mark is composed of a horizontal axis and a vertical axis, the horizontal axis coincides with the center of the fluid pipeline, and the vertical axis coincides with the central axis of the fluid pipeline on both sides.

[0007] Preferably, one side of the gate valve seat is integrally formed with a vertical mark, which coincides with the central axis of the gate valve seat.

[0008] Preferably, the outer end of the fluid pipeline is integrally formed with a mounting flange, and the outer side of the mounting flange is provided with a first sealing mounting portion.

[0009] Preferably, a reinforcing rib is arranged between the mounting flange and the gate valve seat, and the reinforcing rib is integrally formed on the outer wall of the fluid pipeline.

[0010] Preferably, the top of the gate valve seat is integrally formed with a sealing cover mounting seat, and the inside of the sealing cover mounting seat is provided with a second sealing mounting portion.

[0011] Preferably, the two ends of the U-shaped protrusion extend upward into the second sealing mounting portion along the inner wall of the gate valve seat.

[0012] The utility model discloses a valve body casting with cross mark, and has the beneficial effects as follows: the traditional recess type protruding type sealing part is changed into the protruding type sealing part, the recess is set up on the outer surface of the valve plate through the design of the matched valve plate, so that the valve plate moves downward along the U-shaped protrusion, and the valve plate is clamped on the outer surface of the protruding type sealing part to seal, and the U-shaped protrusion further seals and positions, and the two sides of the protruding type sealing part extend downward to the inner wall of the fluid pipeline to form the circular arc surface, so that the impurities in the fluid in the pipeline fall on the two sides under the action of gravity when flowing through the protruding type sealing part, and the sealing effect of the gate plate is not affected by the impurities. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0014] Fig. 1 It is the whole outer surface structure schematic diagram of the utility model;

[0015] Fig. 2 It is the fluid pipeline internal structure schematic diagram of the utility model;

[0016] Fig. 3 It is the whole internal structure sectional view of the utility model.

[0017] In the figure: 1, casting gate valve body; 11, fluid pipe; 12, mounting flange; 13, first sealing mounting part; 14, gate valve seat; 141, U-shaped seat body; 142, sealing cover mounting seat; 143, convex sealing part; 144, U-shaped convex; 145, second sealing mounting part; 15, reinforcing rib; 2, cross-shaped mark; 3, vertical mark. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0019] The valve body casting with cross mark provided in the embodiments of the present application solves the problem that the convex sealing part is designed with a groove at present, which leads to the fact that if the fluid flow rate is slow when the fluid flows through the valve seat, impurities in the fluid will accumulate at the sealing groove, and when the valve plate moves down to seal, the impurities at the bottom will be extruded, not only causing the risk of damaging the gate plate, but also easily causing the problem of unable to seal.

[0020] In order to better understand the above technical scheme, the above technical scheme will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0021] The embodiments of the present application disclose a valve body casting with a cross mark.

[0022] According to the drawings Figs. 1-3 As shown in the drawings, the valve body casting with a cross mark comprises a casting gate valve body 1, the casting gate valve body 1 comprises a gate valve seat 14 and fluid pipes 11 integrally formed on both sides of the gate valve seat 14, the gate valve seat 14 comprises a U-shaped seat body 141 and a convex sealing part 143 integrally formed on the inner wall of the U-shaped seat body 141, the middle part of the convex sealing part 143 is provided with a U-shaped convex 144, the convex sealing part 143 protrudes inward from the inner wall of the fluid pipe 11, and the two sides of the convex sealing part 143 extend downward to form a circular arc surface.

[0023] By designing the matched valve plate, a groove is formed on the outer surface of the valve plate, and a limiting groove is formed in the groove, so that the valve plate moves downward along the U-shaped protrusion 144, and the valve plate is clamped on the outer surface of the protruding sealing part 143 for sealing, and meanwhile, the U-shaped protrusion 144 cooperates with the limiting groove to further seal and position, and the protruding sealing part 143 extends downward on the inner wall of the fluid pipeline 11 to form a circular arc surface, so that in use, impurities in the fluid in the pipeline fall on both sides under the action of gravity when flowing through the protruding sealing part 143 at a low flow rate, and the impurities are washed away when the fluid flow rate is large, so as to avoid affecting the sealing effect of the gate plate.

[0024] The outer wall of the gate valve seat 14 is integrally formed with a cross-shaped mark 2, the cross-shaped mark 2 is composed of a horizontal axis and a vertical axis, the horizontal axis coincides with the center of the fluid pipeline 11, and the vertical axis coincides with the central axis of the fluid pipeline 11 on both sides, and the vertical mark 3 is integrally formed on one side of the gate valve seat 14, the vertical mark 3 coincides with the central axis of the gate valve seat 14, the central axes of the fluid pipeline 11 and the left and right centers of the gate valve seat 14 are determined through the cross-shaped mark 2, and the front and rear centers of the gate valve seat 14 are determined through the vertical mark 3, so as to facilitate auxiliary positioning when finely turning the entire cast gate valve body 1.

[0025] The outer end of the fluid pipeline 11 is integrally formed with a mounting flange 12, and the outer side of the mounting flange 12 is provided with a first sealing mounting part 13, and a sealing rubber ring is mounted in the first sealing mounting part 13 when the mounting flange 12 is connected with an external pipeline, so that soft sealing is realized and leakage at the connection is prevented.

[0026] The mounting flange 12 and the gate valve seat 14 are provided with a reinforcing rib 15, and the reinforcing rib 15 is integrally formed on the outer wall of the fluid pipeline 11, so as to further improve the strength of the entire cast gate valve body 1.

[0027] The top of the gate valve seat 14 is integrally formed with a sealing cover mounting seat 142, the inside of the sealing cover mounting seat 142 is provided with a second sealing mounting part 145, both ends of the U-shaped protrusion 144 extend upward along the inner wall of the gate valve seat 14 into the second sealing mounting part 145, and a sealing rubber gasket is mounted in the second sealing mounting part 145, so as to prevent leakage at the valve cover.

[0028] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. Valve body casting with cross marking, comprising a cast gate valve body (1), characterized in that, The casting gate valve body (1) comprises a gate valve seat (14) and fluid pipes (11) integrally formed on both sides of the gate valve seat (14), the gate valve seat (14) comprises a U-shaped seat body (141) and a convex sealing part (143) integrally formed on the inner wall of the U-shaped seat body (141), the middle part of the convex sealing part (143) is provided with a U-shaped convex part (144), the convex sealing part (143) protrudes inward from the inner wall of the fluid pipe (11), and both sides of the convex sealing part (143) extend downward to form a circular arc surface.

2. The valve body casting with crosshairs as defined in claim 1, wherein: The outer wall of the gate valve seat (14) is integrally formed with a cross-shaped mark (2), the cross-shaped mark (2) is composed of a horizontal axis and a vertical axis, the horizontal axis coincides with the center of the fluid pipe (11), and the vertical axis coincides with the central axis of the fluid pipe (11) on both sides.

3. The valve body casting with crosshairs as defined in claim 2, wherein: The gate valve seat (14) is integrally formed with a vertical mark (3) on one side, and the vertical mark (3) coincides with the central axis of the gate valve seat (14).

4. The cross-hatched valve body casting of claim 1, wherein: The outer end of the fluid pipe (11) is integrally formed with a mounting flange (12), and the outer side of the mounting flange (12) is provided with a first sealing mounting part (13).

5. The valve body casting with crosshairs as defined in claim 4, wherein: The mounting flange (12) and the gate valve seat (14) are provided with a reinforcing rib (15), and the reinforcing rib (15) is integrally formed on the outer wall of the fluid pipe (11).

6. The cross-hatched valve body casting of claim 1, wherein: The top of the gate valve seat (14) is integrally formed with a sealing cover mounting seat (142), and the inside of the sealing cover mounting seat (142) is provided with a second sealing mounting part (145).

7. The cross-hatched valve body casting of claim 6, wherein: Both ends of the U-shaped convex part (144) extend upward along the inner wall of the gate valve seat (14) into the second sealing mounting part (145).

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