CN203656279U

CN203656279U - Backflow protection combined ball valve

Info

Publication number: CN203656279U
Application number: CN201420043039.7U
Authority: CN
Inventors: 邵和芬
Original assignee: ZHEJIANG HOASTAR VALVE CO Ltd
Current assignee: ZHEJIANG HOASTAR VALVE CO Ltd
Priority date: 2014-01-17
Filing date: 2014-01-17
Publication date: 2014-06-18
Anticipated expiration: 2024-01-17

Abstract

The utility model discloses a backflow protection combined ball valve, which comprises a control valve, wherein the control valve comprises a ball valve body with a pipe inlet and a pipe outlet, a ball body, a valve rod and a handle, wherein the ball body and the ball rod are arranged in the ball valve body, one end of the valve rod is fixedly matched with the ball body, and the other end of the valve rod stretches outside the ball valve body and is connected with the handle. The backflow protection combined ball valve is characterized in that a valve body pipeline is arranged on the pipe outlet of the ball valve body, a medium through pipe is arranged on one end of the valve body pipeline, the other end of the valve body pipeline is welded with a ball valve body pipe port, and a check valve is arranged on a connection position of the valve body pipeline and the ball valve body pipe port. When medium flows back, the check valve enables a valve core of the check valve to automatically move to block a backflow direction, and is beneficial to prevent the medium from having a backflow phenomenon, and the handle and the valve rod do not need to be connected through threads simultaneously, and are firm after being mounted, and can not have a loose phenomenon and are beneficial for long-term use.

Description

A kind of Combined ball valve of counterflow-preventing

Technical field

The utility model relates to the Combined ball valve of a kind of ball valve, particularly a kind of counterflow-preventing.

Background technique

The ball valve of prior art is a variety of, there are stop valve, throttle valve or safety check etc., but the ball valve that flows backwards or open or close medium in order to realize throttling, cut-off, medium, different valves need to be installed to be assembled and could realize, complex installation process, time are long, do not possess the above valve being integrated in one on market.

Model utility content

The purpose of this utility model is the Combined ball valve that a kind of counterflow-preventing that a kind of simple in structure, medium flows backwards is provided in order to solve above-mentioned the deficiencies in the prior art.

To achieve these goals, the Combined ball valve of the designed a kind of counterflow-preventing of the utility model, comprise control valve, described control valve comprises the ball valve body with the turnover mouth of pipe, spheroid, valve rod and handle, described spheroid, valve rod is installed in ball valve body, described valve rod one end and spheroid secure fit, the other end stretches out outside ball valve body and is connected with handle, it is characterized in that: the outlet spout of described ball valve body is provided with valve body pipeline, described valve body pipeline one end is provided with medium siphunculus, the other end and the welding of the ball valve body mouth of pipe, the joint with the ball valve body mouth of pipe of described valve body pipeline is provided with safety check.

Preferably, described safety check is by Boilor check valve seat, non-return valve core, check-valve cap and spring, described non-return valve core one end is fixedly connected with check-valve cap, the other end is placed in inlet pipe mouth place and is sealed and matched, and is provided with the Boilor check valve seat seal ring for Leakage prevention between the port of described inlet pipe mouth and Boilor check valve seat.

Preferably, described valve rod and the Placement of handle are that described handle one end is provided with two mounting holes, matching hole, U-shaped mounting rod and inner groovy, described valve rod port goes out to be provided with ring-type inner groovy, valve rod port is arranged in the matching hole of handle, U-shaped mounting rod intercalation is in mounting hole, and U-shaped mounting rod is also fixed with ring-type inner groovy.

A kind of novel Combined ball valve that the utility model obtains, this ball valve is made up of two different valves, can realize in the time that flowing medium flows into medium and enters pipe and enter, flowing medium flows in safety check, in the time of medium counter flow, safety check has and allows automatically its spool move the direction of blocking adverse current, safety check is conducive to the phenomenon that prevents that medium from flowing backwards, this handle and valve rod adopt said structure simultaneously, do not need to be threaded, and firm after installation, there will not be loosening phenomenon to be conducive to long-term use.

Brief description of the drawings

Fig. 1 is the safety check opening structure schematic diagram in Combined ball valve;

Fig. 2 is Fig. 1 closure of check ring structural representation;

Fig. 3 is the structural representation of valve rod port;

Fig. 4 is the partial structurtes schematic diagram of handle;

Fig. 5 is the structural representation of mounting rod.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Embodiment:

As Fig. 1, shown in Fig. 2, a kind of novel Combined ball valve that the utility model provides, comprise control valve, control valve comprises the ball valve body 1 with the turnover mouth of pipe, spheroid 2, valve rod 3 and handle 4, described spheroid 2, valve rod 3 is installed in ball valve body 1, described valve rod 3 one end and spheroid 2 secure fit, the other end stretches out outside ball valve body and is connected with handle 4, the outlet spout of described ball valve body is provided with valve body pipeline 5, described valve body pipeline 5 one end are provided with medium siphunculus 6, the other end and the welding of the ball valve body mouth of pipe, the joint with the ball valve body mouth of pipe of described valve body pipeline is provided with safety check, described safety check is by Boilor check valve seat 10, non-return valve core 13, check-valve cap 11 and spring 12, described non-return valve core 13 one end are fixedly connected with check-valve cap 22, the other end of non-return valve core 13 is taper, on check-valve cap 22, be processed with several ports, the other end is placed in inlet pipe mouth place and is sealed and matched, between the port of described inlet pipe mouth and Boilor check valve seat 10, be provided with the Boilor check valve seat seal ring 12 for Leakage prevention, Boilor check valve seat seal ring 12 is when medium flows backwards, because the thrust of medium can promote safety check, be the non-return valve core 13 meeting movements in safety check, the conical surface of non-return valve core 13 contacts with 12, check valve seal circle, can reach the phenomenon of refluence, its periphery ring of non-return valve core of tapered end contacts with Boilor check valve seat 10 simultaneously, reach the absolute adverse current phenomenon that prevents,

Shown in Fig. 3 to Fig. 5, described valve rod and the Placement of handle are that described handle one end is provided with two mounting holes 31, matching hole 32, U-shaped mounting rod 35 and inner groovy 33, described valve rod port goes out to be provided with ring-type inner groovy 30, valve rod port is arranged in the matching hole 32 of handle, U-shaped mounting rod 35 intercalations are in mounting hole, and U-shaped mounting rod 35 also passes ring-type inner groovy 30, solves and all needs to be at present threaded, this structure is equivalent to one-body molded, there will not be loosening situation.

A kind of novel Combined ball valve that the utility model obtains, this ball valve has reached throttling, has filtered, prevented the effects such as refluence, can realize at flowing medium inflow medium and enter pipe, then flowing medium flows in safety check, and have the control valve control that is communicated with safety check open or close, otherwise flowing medium in control valve can not flow backwards, in the time flowing backwards, the spool of its safety check can automatic operation, prevent refluence situation, safety check is conducive to the phenomenon that prevents that medium from flowing backwards.

For model utility person of an ordinary skill in the technical field; do not departing under the prerequisite of model utility design; its framework form can be flexible and changeable; just make some simple deduction or replace, all should be considered as belonging to the definite scope of patent protection of claims of being submitted to by model utility.

Claims

1. the Combined ball valve of a counterflow-preventing, comprise control valve, described control valve comprises ball valve body, spheroid, valve rod and the handle with the turnover mouth of pipe, described spheroid, valve rod are installed in ball valve body, described valve rod one end and spheroid secure fit, the other end stretches out outside ball valve body and is connected with handle, it is characterized in that: the outlet spout of described ball valve body is provided with valve body pipeline, described valve body pipeline one end is provided with medium siphunculus, the other end and the welding of the ball valve body mouth of pipe, the joint with the ball valve body mouth of pipe of described valve body pipeline is provided with safety check.

2. the Combined ball valve of a kind of counterflow-preventing according to claim 1, it is characterized in that: described safety check is by Boilor check valve seat, non-return valve core, check-valve cap and spring, described non-return valve core one end is fixedly connected with check-valve cap, the other end is placed in inlet pipe mouth place and is sealed and matched, and is provided with the Boilor check valve seat seal ring for Leakage prevention between the port of described inlet pipe mouth and Boilor check valve seat.

3. the Combined ball valve of a kind of counterflow-preventing according to claim 1, it is characterized in that: described valve rod and the Placement of handle are that described handle one end is provided with two mounting holes, matching hole, U-shaped mounting rod and inner groovy, described valve rod port goes out to be provided with ring-type inner groovy, valve rod port is arranged in the matching hole of handle, U-shaped mounting rod intercalation is in mounting hole, and U-shaped mounting rod is also fixed with ring-type inner groovy.