Composite high-sealing valve clack for fire hydrant

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to a composite high-sealing valve clack for a fire hydrant. The composite high-sealing valve clack for the fire hydrant comprises a valve clack body, a sealing rubber mat is connected to one side of the valve clack body, a connecting piece is arranged on the sealing rubber mat, a valve rod mounting piece is arranged on the connecting piece, a valve rod mounting hole is formed in the mounting piece in the axial direction, and a valve rod is arranged in the valve rod mounting hole. An internal thread line matched with the valve rod is arranged in the mounting hole, so that an operator can conveniently perform sealing operation on the valve clack, and the stability and the sealing performance of the valve clack are effectively enhanced; a clamping piece is arranged in the valve clack body and comprises a lock catch and a limiting hole matched with the lock catch, so that the valve clack body and the sealing rubber mat are fixed through matching of the lock catch and the limiting hole, the sealing rubber mat can effectively seal the valve clack, and the sealing performance of the valve clack is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a composite high-sealing valve disc used for a fire hydrant. Background Art

[0002] The valve disc is one of the main core parts of the valve, which directly bears the medium pressure in the valve. The valve disc is installed on the valve stem and cooperates with the valve seat to seal the valve and stop water. In order to increase the sealing performance of the valve disc and the valve, a sealing ring needs to be added to the bottom of the valve disc.

[0003] For example, patent No. CN210566642U discloses a ground bolt valve flap structure with a secondary sealing function, which structure includes a connecting piece, a limiting ring, and a valve flap body. The lower end of the connecting piece passes through the center of the limiting ring and is connected by sliding. The limiting ring is fixedly installed on the upper end of the valve flap body. A slider is provided on the outer wall of the lower part of the connecting piece. A slide groove corresponding to the slider is provided inside the limiting ring. The slider is fitted into the slide groove. A reset spring is provided between the bottom of the slider and the bottom of the slide groove. A secondary sealing ring with a movable connection is provided at the lower part of the valve flap body. A transmission structure for pushing the secondary sealing ring is provided inside the valve flap body. The transmission structure includes a push rod, a piston rod, a piston block, and a sealed air pressure chamber. A structure for performing secondary sealing when the valve is closed is provided in the valve flap, which effectively improves the sealing performance of the valve flap after wear and improves its service life. However, the use of a reset spring in this structure makes it easy to fail during repeated compression and rebound, causing the sealing effect of the valve flap to fail, thereby affecting its service life.

[0004] In view of this, the present application proposes a composite high-sealing valve disc for a fire hydrant. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art and provide a composite high-sealing valve disc for a fire hydrant.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a composite high-sealing valve flap for a fire hydrant, comprising a valve flap body, a sealing rubber pad being connected to one side of the valve flap body, a connecting piece being provided on the sealing rubber pad, a valve stem mounting piece being provided on the connecting piece, a valve stem mounting hole being provided along the axial direction, an internal thread line matching the valve stem being provided in the mounting hole; a clamping piece being provided in the valve flap body, the clamping piece comprising a locking buckle and a limiting hole matching the locking buckle, and the valve flap body and the sealing rubber pad being fixed by the cooperation of the locking buckle and the limiting hole.

[0007] Furthermore, the lock buckle is installed on the inner wall of the valve disc body, and the limiting hole is opened on the connecting piece.

[0008] Furthermore, the lock buckles include two, and the two lock buckles are symmetrically arranged.

[0009] Furthermore, the lock buckle is an elastic lock buckle, and the elastic lock buckle is arranged in a V shape.

[0010] Furthermore, the connecting piece and the mounting piece are both cylindrical, and the diameter of the mounting piece is larger than the diameter of the connecting piece.

[0011] Furthermore, the connecting member comprises a connecting rod, and a clamping block is provided at one end of the connecting rod facing the sealing rubber pad, and an inner groove is provided on the outer surface of the clamping block.

[0012] Furthermore, the limiting holes include a plurality of limiting holes, and the plurality of limiting holes are spaced and symmetrically arranged on the connecting rod.

[0013] Furthermore, the inner wall of the sealing rubber pad is provided with a clamping groove matching the clamping block, and the inner wall of the clamping groove is provided with a convex rib that is interference-connected with the inner groove.

[0014] Furthermore, the length of the clamping block is equal to the length of the clamping groove, and the diameter of the clamping block is smaller than the diameter of the connecting rod.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The present application provides a clamping piece in the valve flap body, wherein the clamping piece includes a lock buckle and a limiting hole matching the lock buckle, thereby fixing the valve flap body and the sealing gasket through the cooperation of the lock buckle and the limiting hole, so that the sealing gasket can effectively seal the valve flap and enhance the sealing performance of the valve flap.

[0017] 2. The present application connects a sealing rubber pad to one side of the valve flap body, the sealing rubber pad is provided with a connecting piece, the connecting piece is provided with a valve stem mounting piece, the mounting piece is provided with a valve stem mounting hole along the axial direction, and the mounting hole is provided with an internal thread line matching the valve stem, thereby facilitating the operator to perform sealing operations on the valve flap and effectively enhancing the stability and sealing of the valve flap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a composite high-sealing valve disc for fire hydrants in a preferred embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of a composite high-sealing valve disc for fire hydrants in a preferred embodiment of the utility model.

[0020] Figure numerals: 1. valve disc body; 2. sealing rubber pad; 3. connecting piece; 4. mounting piece; 5. mounting hole; 6. locking buckle; 7. limiting hole; 8. clamping block; 9. convex rib. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 2 As shown, a preferred embodiment of the utility model is a composite high-sealing valve flap for a fire hydrant, comprising a valve flap body 1, a sealing rubber pad 2 being connected to one side of the valve flap body 1, a connecting piece 3 being provided on the sealing rubber pad 2, a valve stem mounting piece 4 being provided on the connecting piece 3, and a valve stem mounting hole 5 being provided along the axial direction, and an internal thread line matching the valve stem being provided in the mounting hole 5, so as to facilitate the operator to perform sealing operation on the valve flap, and effectively enhance the stability and sealing of the valve flap; a clamping piece is provided in the valve flap body 1, and the clamping piece comprises a lock buckle 6 and a limiting hole 7 matching the lock buckle 6, so as to realize fixing the valve flap body 1 and the sealing rubber pad 2 by the cooperation of the lock buckle 6 and the limiting hole 7, so that the sealing rubber pad can effectively seal the valve flap and enhance the sealing of the valve flap.

[0023] As a preferred embodiment of the utility model, it may also have the following additional technical features: the lock buckle 6 is installed on the inner wall of the valve flap body 1, and the limiting hole 7 is opened on the connecting member 3; and the lock buckle 6 includes two, the two lock buckles 6 are symmetrically arranged, and the lock buckle 6 is an elastic lock buckle, and the elastic lock buckle is arranged in a V shape. Therefore, after the connecting member 3 and the sealing rubber pad 2 are assembled, the connecting member 3 is inserted into the inside of the valve flap body 1, and the sealing rubber pad 2 and the valve flap body 1 are tightly fitted by rotating the connecting member 3, and finally the lock buckle 6 is snapped into the upper limiting hole 7 of the connecting member 3, and the sealing rubber pad 2 and the valve flap body 1 are locked, so that the valve flap has good stability.

[0024] In this embodiment, the connecting member 3 and the mounting member 4 are both cylindrical, and the diameter of the mounting member 4 is larger than the diameter of the connecting member 3. Therefore, it is convenient for people to install the valve stem.

[0025] In this embodiment, the limiting holes 7 include a plurality of limiting holes 7, which are spaced apart and symmetrically arranged on the connecting rod, thereby making the valve flap have good stability.

[0026] In this embodiment, the connecting member 3 includes a connecting rod, and a clamping block 8 is provided at one end of the connecting rod facing the sealing rubber pad 2, and an inner groove is provided on the outer surface of the clamping block 8; and a clamping groove matching the clamping block 8 is provided on the inner wall of the sealing rubber pad 2, and a convex rib 9 is provided on the inner wall of the clamping groove that is interference-connected with the inner groove, and the length of the clamping block 8 is equal to the length of the clamping groove, and the diameter of the clamping block 8 is smaller than the diameter of the connecting rod. Thus, the connecting member 3 and the sealing rubber pad 2 can be tightly connected, which is convenient for the subsequent placement of the connecting member 3 into the valve flap body 1 and connected to the sealing rubber pad 2, and by rotating the connecting member 3, the lock buckle 6 is clamped into the upper limit hole 7 of the connecting member 3 to seal the valve flap body 1, so that the valve flap has good sealing and stability.

[0027] The working principle of the utility model is as follows: the sealing rubber pad 2 is placed in the valve flap body 1, and then the connecting piece 3 is tightly connected to the sealing rubber pad 2 through the cooperation of the clamping block 8 and the clamping groove, and the connecting piece 3 is rotated to make the lock buckle 6 snap into the upper limit hole 7 of the connecting piece 3 to seal the valve flap body 1, so that the valve flap has good sealing and stability.

[0028] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0029] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A composite high-sealing valve disc for fire hydrants, characterized in that: It includes a valve flap body, one side of the valve flap body is connected to a sealing gasket, a connecting piece is provided on the sealing gasket, the connecting piece is provided with a valve stem mounting piece, the mounting piece is provided with a valve stem mounting hole along the axial direction, and the mounting hole is provided with an internal thread line matching the valve stem; a clamping piece is provided in the valve flap body, the clamping piece includes a lock buckle and a limiting hole matching the lock buckle, and the valve flap body and the sealing gasket are fixed by the cooperation of the lock buckle and the limiting hole.

2. The composite high-sealing valve disc for fire hydrants according to claim 1, characterized in that: The lock buckle is installed on the inner wall of the valve flap body, and the limiting hole is opened on the connecting piece.

3. The composite high-sealing valve disc for fire hydrants according to claim 2, characterized in that: The lock buckles include two, and the two lock buckles are symmetrically arranged.

4. The composite high-sealing valve disc for fire hydrants according to claim 3 is characterized in that: The lock buckle is an elastic lock buckle, and the elastic lock buckle is arranged in a V shape.

5. The composite high-sealing valve disc for fire hydrants according to claim 1, characterized in that: The connecting piece and the mounting piece are both cylindrical, and the diameter of the mounting piece is larger than the diameter of the connecting piece.

6. The composite high-sealing valve disc for fire hydrants according to claim 1, characterized in that: The connecting piece comprises a connecting rod, one end of the connecting rod facing the sealing rubber pad is provided with a clamping block, and an inner groove is provided on the outer surface of the clamping block.

7. The composite high-sealing valve disc for fire hydrants according to claim 6, characterized in that: The limiting holes include a plurality of holes, and the plurality of limiting holes are spaced and symmetrically arranged on the connecting rod.

8. The composite high-sealing valve disc for fire hydrants according to claim 6, characterized in that: The inner wall of the sealing rubber pad is provided with a clamping groove matching the clamping block, and the inner wall of the clamping groove is provided with a convex rib which is interference-connected with the inner groove.

9. The composite high-sealing valve disc for fire hydrants according to claim 8, characterized in that: The length of the clamping block is equal to the length of the clamping groove, and the diameter of the clamping block is smaller than the diameter of the connecting rod.

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