CN109027328B

CN109027328B - Vertical check valve

Info

Publication number: CN109027328B
Application number: CN201810976173.5A
Authority: CN
Inventors: 王勇; 张迎春; 薛勇; 纪俊章; 马彬; 王万纪; 阮辉; 季素音; 周阳; 王远东
Original assignee: Suzhou Zhongkuang Sanjie Technology Co ltd
Current assignee: Suzhou Zhongkuang Sanjie Technology Co ltd
Priority date: 2018-08-25
Filing date: 2018-08-25
Publication date: 2020-05-01
Anticipated expiration: 2038-08-25
Also published as: CN109027328A

Abstract

The invention discloses a vertical check valve, which comprises a valve body, a valve core seat arranged in the valve body and a valve core arranged in the valve core seat, wherein the valve body is formed by welding, a water through hole of the valve core seat is a conical hole, the valve core comprises a movable valve core and a guide plate, the movable valve core is arranged in a frustum shape and corresponds to the water through hole of the valve core seat, the guide plate is arranged on the valve core facing to a water outlet side, the valve core is opened during water passing, and the guide plate enters the guide groove along the guide groove of the valve body. The valve core is made of conical polyurethane materials and is wear-resistant; because the valve core is arranged to be frustum-shaped, the screw and the pressing plate are adopted, the sealing effect is not affected by the water pressure, the sealing is better when the water pressure is higher, and the material and the processing cost of the product are greatly saved.

Description

Vertical check valve

Technical Field

The invention relates to a check valve, in particular to a vertical check valve.

Background

At present, most of check valves in the market are cast parts, so that the structure is heavy, the casting cost is high, and the environmental pollution is large. And the case structure is too simple, and inside adopts the copper mold insert to seal, can appear the backward flow phenomenon when pressure is too big, consequently, sealed effect is not ideal. Moreover, the sealing joint surface is easy to wear after being used for a period of time, so that the check valve cannot be normally used.

Disclosure of Invention

The valve core is made of conical polyurethane materials, so that the valve core is wear-resistant, the sealing effect is better when the water pressure is higher, and the sealing effect is not influenced by the water pressure.

In order to achieve the purpose, the invention adopts the technical scheme that: the vertical check valve comprises a valve body, a valve core seat arranged in the valve body and a valve core arranged in the valve core seat, wherein the valve body is formed by welding, a water through hole of the valve core seat is a conical hole, the valve core comprises a movable valve core and a guide plate, the movable valve core is arranged in a frustum shape and corresponds to the water through hole of the valve core seat, the guide plate is arranged on the valve core facing to a water outlet side, the valve core is opened during water flowing, and the guide plate enters the guide groove along the guide groove of the valve body.

Further, the movable valve core is made of polyurethane materials.

Furthermore, the valve core further comprises a screw rod and a pressing plate, a sunk groove is formed in the middle of the frustum on the side, facing the water inlet, of the movable valve core, an installation through hole is formed in the movable valve core on the concentric axis of the sunk groove, the pressing plate is arranged at the rear end of the movable valve core, the screw rod is inserted into the installation through hole and locked with a nut in the sunk groove, a pressing handle is arranged at the other end of the screw rod, the pressing handle is pressed on the pressing plate, and the guide plate is installed on the pressing handle.

Furthermore, the valve body comprises a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are arranged outside the valve cavity of the valve body, flanges at two ends of the water inlet pipe and the water outlet pipe are arranged in the valve cavity of the valve body, a threaded flange at one end of the water inlet pipe is arranged, and the valve core seat is arranged on the threaded flange.

Furthermore, the threaded flange is provided with a step, a sealing ring is arranged at the step, and the valve core seat is sleeved on the threaded flange and sealed through the sealing ring.

Furthermore, the end face of the valve core seat is provided with an installation bayonet.

Furthermore, one side of the valve cavity of the valve body is provided with an opening, a flange is arranged on the opening, an inner step is arranged on the flange, a sealing gasket is arranged in the inner step, and a valve cover is arranged on the flange.

When the check valve is used, the check valve is fixed in the middle of the water pipe through the flanges on the sides of the water inlet pipe and the water outlet pipe, when water flows, the valve core is opened under the action of water pressure, the valve core moves along with the guide plate, the guide plate enters the guide groove, the water flowing state of the check valve is realized, when the water level meets the use requirement, the water flowing is stopped, the valve core enters the valve core seat under the action of negative pressure, and the backflow of the water is effectively prevented.

The invention has the beneficial effects that: the structure design is simple, a control power supply is not required to be added, electricity and energy are saved, and the valve core is made of conical polyurethane materials and is wear-resistant; because the valve core is arranged to be frustum-shaped, the screw and the pressing plate are adopted, the sealing effect is not affected by the water pressure, the sealing is better when the water pressure is higher, and the material and the processing cost of the product are greatly saved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the valve seat structure of the present invention;

fig. 3 is a sectional view of the valve body structure of the present invention.

In the figure: 1. the water inlet valve comprises a flange, 2, a water inlet pipe, 3, a water outlet pipe, 4, a threaded flange, 5, a sealing ring, 6, a valve core seat, 61, a water through hole, 62, an installation bayonet, 7, a valve core, 71, a movable valve core, 72, a screw, 73, a pressure plate, 74, a pressure handle, 75, a guide plate, 8, a guide groove, 9, a sealing gasket, 10, a valve body, 11 and a valve cover.

Detailed Description

As shown in fig. 1, 2 and 3, a vertical check valve includes a valve body 10, a valve core seat 6 installed in the valve body, and a valve core 7 installed in the valve core seat 6, wherein a water passage hole 61 of the valve core seat 6 is a tapered hole, the valve core 7 includes a movable valve core 71 and a guide plate 75, the movable valve core 71 is disposed in a frustum shape and corresponds to the water passage hole of the valve core seat 6, the guide plate 75 is installed on the valve core 7 facing a water outlet side, the valve core 7 is opened when water passes through, and the guide plate 75 enters the guide groove 8 along the guide groove 8 of the valve body.

When water is supplied, the valve core 7 is opened under the action of water pressure and enters the guide groove 8, so that the water supply state of the check valve is realized. When the water level reaches the use requirement, the water stops flowing, the valve core 7 is closed under the action of water pressure and enters the valve core seat, and the backflow of water is effectively prevented. The limbers of the valve core seat 6 are conical holes, and are tightly matched with the conical structure of the valve core 7 under the action of water pressure, so that the backflow of water is effectively prevented.

As a specific preference, the movable valve element 71 is made of polyurethane material.

As a further preferable design, the valve core 7 further comprises a screw 72 and a pressing plate 73, a sunken groove is arranged in the middle of the frustum of the movable valve core 71 facing the water inlet side, a mounting through hole is arranged on the movable valve core 71 on the concentric axis of the sunken groove, the pressing plate 73 is arranged at the rear end of the movable valve core 71, the screw 72 is inserted into the mounting through hole and locked with the nut in the sunken groove, a pressing handle 74 is arranged at the other end of the screw 72, the pressing handle 74 presses on the pressing plate 73, and the guide plate 75 is mounted on the pressing handle 74.

The sunk groove of the movable valve core 71 is used for placing a lock nut, and the lock nut is matched with the screw 72 and the pressure plate 73 to prevent the movable valve core 71 from falling off. The pressing handle 74 and the guide plate 75 are installed on the pressing plate 73, the valve core 7 is opened when water is supplied, the guide plate 75 enters the guide groove through the guide groove, and abnormal sound and influence on sealing effect under water pressure impact when the valve core is supplied with water are prevented.

As a specific preferred, the valve body 10 includes a water inlet pipe 2 and a water outlet pipe 3, and is installed outside the valve cavity of the valve body 10, flanges 1 at two ends of the water inlet pipe 2 and the water outlet pipe 3 are installed in the valve cavity of the valve body, a threaded flange 4 at one end of the water inlet pipe 2, and a valve core seat 6 is installed on the threaded flange 4.

As a further preferable design, the threaded flange 4 is provided with a step, a sealing ring 5 is installed at the step, and the valve core seat 6 is sleeved on the threaded flange 4 and sealed by the sealing ring 5 to prevent water from flowing back under the action of water pressure.

As a further preferable design, the end face of the valve core seat 6 is provided with an installation bayonet 62, and the installation bayonet 62 is convenient to be fastened and connected with the threaded flange 4, so that the connection effect is ensured.

As a specific preference, one side of the valve cavity of the valve body 10 is opened, a flange is arranged on the opening, an inner step is arranged on the flange, a sealing gasket 9 is arranged in the inner step, and a valve cover 11 is arranged on the flange. The valve cavity of the valve body 10 is sealed with the valve cover 11 through the sealing gasket 9, so that water leakage caused by overlarge water pressure in the valve cavity is effectively prevented.

The invention has the advantages that the valve core is made of polyurethane material, the structure is a conical structure, the dead weight of the valve body is reduced, the valve core is non-toxic and harmless, the sealing effect is good, the electricity and the energy are saved, and the production and use cost of the product is greatly saved while the water yield is ensured.

The embodiments of the present application are only used for illustrating the technical features disclosed in the present application, and the changes made by the simple substitution by those skilled in the art still belong to the protection scope of the present application.

Claims

1. The utility model provides a perpendicular check valve, includes the valve body and installs the case seat in the valve body, installs the case in the case seat, its characterized in that: the valve body is formed by welding, the water through hole of the valve core seat is a conical hole, the valve core comprises a movable valve core and a guide plate, the movable valve core is arranged in a frustum shape and corresponds to the water through hole of the valve core seat, the guide plate is arranged on the valve core facing the water outlet side, the valve core is opened when water passes through, and the guide plate enters the guide groove along the guide groove of the valve body; the movable valve core is made of polyurethane material; the valve core also comprises a screw and a pressing plate, wherein a sunk groove is formed in the middle of a frustum on the side, facing the water inlet, of the movable valve core, an installation through hole is formed in the movable valve core on the concentric axis of the sunk groove, the pressing plate is arranged at the rear end part of the movable valve core, the screw is inserted into the installation through hole and locked with a nut in the sunk groove, a pressing handle is arranged at the other end of the screw, the pressing handle is pressed on the pressing plate, and the guide plate is installed on the pressing handle; the valve body comprises a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are arranged outside a valve cavity of the valve body, flanges at two ends of the water inlet pipe and the water outlet pipe are arranged in the valve cavity of the valve body, a threaded flange at one end of the water inlet pipe is arranged, and a valve core seat is arranged on the threaded flange; the threaded flange is provided with a step, a sealing ring is arranged at the step, and the valve core seat is sleeved on the threaded flange and sealed through the sealing ring; an installation bayonet is arranged on the end face of the valve core seat; one side of the valve cavity of the valve body is provided with an opening, a flange is arranged on the opening, an inner step is arranged on the flange, a sealing gasket is arranged in the inner step, and a valve cover is arranged on the flange.