Improved valve plate and fire hydrant with improved valve plate

Abstract

The improved valve plate is simple in structure, long in service life and good in sealing performance and comprises a fire hydrant body, a water inlet channel and a water outlet channel are formed in the fire hydrant body, a valve seat is arranged on the fire hydrant body, and the valve plate for sealing the valve seat is arranged on the fire hydrant body. A valve rod is arranged on the valve plate, a sealing protrusion matched with a water inlet channel opening of the fire hydrant is arranged at the lower end of the valve plate in a surrounding mode, and the sealing protrusion is obliquely arranged.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve door technical field, especially in improved valve plate and the fire hydrant with improved valve plate. BACKGROUND

[0002] Indoor fire hydrant is a kind of fixed fire-fighting facilities, mainly used to control combustible material, isolate combustion-supporting material and eliminate ignition source.

[0003] Although existing fire hydrant can meet use, in cold winter, due to low temperature, it is easy to cause valve plate to freeze and deform, further cause sealing surface to have no way to seal valve seat, cause fire hydrant to be easy to leak, influence the use of fire hydrant.

[0004] In order to solve the above problems, the utility model thus produces. UTILITY MODEL CONTENTS

[0005] Therefore, in view of the above problems, the utility model provides an improved valve plate and a fire hydrant with the improved valve plate, which are simple in structure, long in service life and good in sealing performance.

[0006] To solve the above technical problems, the utility model takes the following solution: the improved valve plate includes a valve plate and a valve rod arranged on the valve plate, a sealing protrusion is arranged around the inlet of the water inlet channel of the fire hydrant at the lower end of the valve plate, and the sealing protrusion is inclined.

[0007] Further improvement is that the valve plate includes a valve plate body made of cast iron, a rubber flap is coated on the valve plate body, and the sealing protrusion is integrally formed with the rubber flap.

[0008] The fire hydrant with the improved valve plate includes a fire hydrant body, a water inlet channel and a water outlet channel are formed in the fire hydrant body, a valve seat is arranged on the fire hydrant body, a valve plate for sealing the valve seat is arranged on the fire hydrant body, a valve rod is arranged on the valve plate, a sealing protrusion is arranged around the inlet of the water inlet channel of the fire hydrant at the lower end of the valve plate, and the sealing protrusion is inclined.

[0009] Further improvement is that the valve plate includes a valve plate body made of cast iron, a rubber flap is coated on the valve plate body, and the sealing protrusion is integrally formed with the rubber flap.

[0010] Further improvement is that the fire hydrant body is provided with an anti-freezing device for preventing the valve plate from freezing and deforming.

[0011] Further improvement is that the anti-freezing device includes a sealing plug, a drainage opening is formed in the side of the fire hydrant body at the valve seat, and the sealing plug is threadedly arranged in the drainage opening to close the drainage opening.

[0012] Further improvement is that: it further comprises a sealing platform, which is arranged around the valve seat, and the sealing platform is in contact with the valve plate on the side, and the sealing platform is inclined at both ends.

[0013] Further improvement is that: the valve plate is provided with a heating pipe for heating the valve plate.

[0014] Further improvement is that: the water outlet channel is provided with a pressure reducing device.

[0015] Further improvement is that: the pressure reducing device comprises a water passing cylinder, the water passing cylinder is arranged in the water outlet channel, the water passing cylinder is provided with a water outlet for water outlet, the upper side of the water passing cylinder is provided with a water inlet, and the water passing cylinder is provided with a pressure reducing device for controlling water flow.

[0016] Further improvement is that: the pressure reducing device comprises a sliding sleeve, the sliding sleeve is arranged on the water passing cylinder, and the sliding sleeve and the water passing cylinder are provided with an elastic element.

[0017] Further improvement is that: the elastic element is a spring.

[0018] By adopting the foregoing technical scheme, the beneficial effects of the utility model are:

[0019] 1. Simple structure, good sealing performance and long service life. When the fire hydrant is sealed, the valve plate 4 is sealed on the valve seat, and then the sealing convex is sealed in the water inlet channel and is in contact with the edge of the valve seat to tighten the seal and strengthen the sealing of the valve plate, so that the deformation of the valve plate is avoided, and the leakage phenomenon is avoided, and the sealing of the fire hydrant is ensured.

[0020] 2. When the fire hydrant is used, the sealing plug is opened, the water inside the fire hydrant is completely discharged, the water inside the fire hydrant is prevented from being frozen and deformed, and the water inside the fire hydrant is prevented from being corroded, which is beneficial to improve the service life of the valve plate and the fire hydrant. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a sectional view of the fire hydrant with improved valve plate according to the embodiment of the utility model.

[0022] Figure 2 is a sectional view of the fire hydrant with improved valve plate according to the embodiment of the utility model.

[0023] Figure 3 is a sectional view of the fire hydrant with improved valve plate according to the embodiment of the utility model.

[0024] Figure 4 is an enlarged structure diagram of the A place according to the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The utility model is further illustrated in combination with the drawings and specific embodiments.

[0026] Reference Figures 1-4 The utility model discloses: have the fire hydrant with improved valve plate, including fire hydrant body 1, be equipped with water inlet channel 2 and water outlet channel 3 on fire hydrant body 1, be equipped with valve seat on fire hydrant body 1, be equipped with the valve plate 4 of sealing valve seat on fire hydrant body 1, be equipped with valve stem 5 on valve plate 4, the lower end of valve plate 4 matches fire hydrant water inlet channel 2 mouth and is equipped with sealing protrusion 6 around, sealing protrusion 6 is arranged obliquely. In which, when the fire hydrant seals, valve plate 4 seals on valve seat, then sealing protrusion 6 seals in water inlet channel 2 mouth and is in edge with valve seat and is resisted and is tightly sealed, strengthens the sealing of valve plate 4, thereby avoids the phenomenon of valve plate 4 and produces deformation, guarantees the sealing of fire hydrant.

[0027] In order to be able to strengthen the quality of valve plate 4, the valve plate 4 includes the valve plate body 41 made of cast iron, the valve plate body 41 is covered with rubber petals 42, and the sealing protrusion 6 is integrally formed with the rubber petals 42. In which, the valve plate 4 is covered with iron material in the rubber petals 42, which can improve the rigidity of the valve plate 4, so that the valve plate 4 is not easy to be deformed by freezing, and the valve plate 4 is not easy to be deformed when it is sealed and impacted on the valve seat, effectively improving the service life of the valve plate 4.

[0028] In order to further prevent the valve plate 4 from being deformed by freezing and easily affecting the sealing property, the fire hydrant body 1 is provided with an anti-freezing device for preventing the valve plate 4 from being deformed by freezing.

[0029] Specifically, the anti-freezing device includes a sealing plug 12, a drainage opening is formed in the side of the fire hydrant body 1 at the valve seat, and the sealing plug 12 is threadedly arranged in the drainage opening to close the drainage opening. In which, when the fire hydrant is used, the sealing plug 12 is opened, the water inside the fire hydrant can be completely drained, the residual water inside the fire hydrant is prevented from freezing to cause the valve plate 4 to be deformed by freezing, and the residual water inside the fire hydrant is prevented from causing the fire hydrant to rust, which is beneficial to improve the service life of the valve plate 4 and the fire hydrant.

[0030] In order to completely drain the water inside the fire hydrant, a sealing table 7 is further included, the sealing table 7 is arranged around the valve seat, the sealing table 7 is resisted by the peripheral side of the valve plate 4, and the sealing table 7 is arranged obliquely at both ends. In which, the sealing table 7 can resist the rubber petals 42 on the valve plate 4, further strengthen the sealing, and make the waterway better discharged from the drainage opening, so that the water flow is better drained.

[0031] In order to further protect the valve plate 4, the valve plate 4 is provided with a heating pipe 71 for heating the valve plate 4. The valve plate can be heated by the heating pipe 71 in extreme weather, so that the surface valve plate is not deformed by freezing, and the valve plate is further protected.

[0032] In order to prevent the fire hydrant from being too high to cause excessive force, affecting the fire, the water outlet channel 3 is provided with a water passing cylinder 8, the water passing cylinder 8 is arranged in the water outlet channel 3, the water passing cylinder 8 is provided with a water outlet, the water passing cylinder 8 is provided with a water inlet 10 on the upper side, the water passing cylinder 8 is provided with a sliding sleeve 9 for controlling the water flow, the sliding sleeve 9 is arranged on the water passing cylinder 8, and the sliding sleeve 9 and the water passing cylinder 8 are provided with a spring 11. When the water flows to the water outlet channel 3, the sliding sleeve 9 is pushed, the spring 11 is compressed, then the water flows from the water inlet 10 and flows out from the water outlet, so as to reduce the pressure of the water flow and achieve the effect of pressure reduction.

[0033] The basic principle and main features of the utility model and its advantages are shown and described above, and the skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions 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, and the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fire hydrant with an improved valve plate, comprising a fire hydrant body having an inlet channel and an outlet channel, a valve seat on the fire hydrant body, a valve plate sealing the valve seat on the fire hydrant body, and a valve stem on the valve plate, characterized in that: It also includes a sealing platform, and the lower end of the valve plate is provided with a sealing protrusion around the fire hydrant inlet. The sealing protrusion is inclined. The sealing platform is arranged around the valve seat. The sealing platform resists the valve plate circumferentially. The sealing platform is inclined at both ends.

2. The fire hydrant with an improved valve plate according to claim 1, characterized in that: The valve plate includes a valve plate body made of cast iron, and a rubber flap is covered on the valve plate body. The sealing protrusion is integrally formed with the rubber flap.

3. The fire hydrant with an improved valve plate according to claim 1, characterized in that: The fire hydrant body is equipped with an antifreeze device to prevent the valve plate from freezing and deforming.

4. The fire hydrant with an improved valve plate according to claim 3, characterized in that: The antifreeze device includes a sealing plug. The fire hydrant body has a drain outlet on its side at the valve seat. The sealing plug is threaded through the drain outlet to seal it.

5. The fire hydrant with an improved valve plate according to claim 1, characterized in that: The valve plate is equipped with a heating tube for heating the valve plate.

6. The fire hydrant with an improved valve plate according to claim 1, characterized in that: The water outlet channel is equipped with a pressure reducing device.

7. The fire hydrant with an improved valve plate according to claim 6, characterized in that: The pressure reducing device includes a water passage cylinder, which is located in the water outlet channel. The water passage cylinder has a water outlet and a water inlet on its upper side. The water passage cylinder is equipped with a pressure reducing device for controlling the water flow rate.

8. The fire hydrant with an improved valve plate according to claim 7, characterized in that: The pressure reducing device includes a sliding sleeve, which is slidably mounted on the water-passing cylinder, and an elastic element is provided between the sliding sleeve and the water-passing cylinder.

9. The fire hydrant with an improved valve plate according to claim 8, characterized in that: The elastic element is a spring.

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