CN201507657U

CN201507657U - Bypass valve

Info

Publication number: CN201507657U
Application number: CN2009201707156U
Authority: CN
Inventors: 宋正兴; 陈砚雄; 刘立平
Original assignee: Jiangsu Yijin Environmental Protection Equipment Engineering Co Ltd
Current assignee: JIANGSU YIJIN ENVIRONMENTAL PROTECTION EQUIPMENT ENGINEERING CO., LTD.
Priority date: 2009-08-17
Filing date: 2009-08-17
Publication date: 2010-06-16
Anticipated expiration: 2019-08-17

Abstract

The utility model relates to a bypass valve, which comprises a bypass connection tube, an air pressure balancing tube, a lifting cylinder, a connecting component and a double-valve plate. The air pressure balancing tube, the lifting cylinder, the connecting component and the double-valve plate are arranged on the outer wall of the bypass connection tube, wherein the lifting cylinder is connected with one end of the connecting component, and the double-valve plate is connected with the other end of the connecting component. With the air pressure balancing tube communicated with the atmosphere, the utility model ensures the zero leakage of the dusty air chamber and the clean air chamber of the dust collector. Moreover, with a counterweight plate, the utility model realizes the automatic protection function through rapidly opening the valve plate to promptly discharge the fume under abnormal conditions of the dust collector such as the situation that the air pressure is lower than the critical value.

Description

Bypass valve

Technical field

The utility model relates to a kind of valve, is specially a kind of sealing bypass valve with bivalve plate.

Background technique

In the deduster equipment of handling the flue gas that combustion refuse produces, for security consideration, in deduster, be provided with bypass valve usually, when occurring supply gas pressure in the deduster and be lower than abnormal conditions such as a certain critical value, flue gas is discharged by bypass valve.

The structure of bypass valve is in the prior art: valve body is installed on bypass flue, and valve plate is connected with valve rod, and valve rod, promotes cylinder and rises or descend by the valve rod drive valve plate, to open or to close bypass flue during work by promoting air cylinder driven.The bypass valve poor sealing performance of said structure, valve plate gets rusty easily stuck, causes bypass flue ineffective.

The model utility content

The purpose of this utility model is at the prior art deficiency, and a kind of bivalve plate bypass valve that is particularly useful for using and can realizing zero leakage in deduster is provided, its long service life, and valve plate opens and closes rapidly.

The utility model is achieved through the following technical solutions: a kind of bypass valve, comprise barometric pipe that bypass took over, was installed on bypass and take over outer wall, promote cylinder, connection part, and bivalve plate, wherein promote the end that cylinder is connected in connection part, the bivalve plate is connected in the other end of connection part.

Wherein, the bivalve plate can be positioned at the below of bypass valve, and opens or closed bypass valve by moving up and down below taking in bypass.

Wherein, the bivalve plate can connect by spring.

Wherein, connection part can comprise interconnective connecting rod and connecting tube.

Wherein, promote cylinder and can be installed on the cylinder support that is positioned at its below, in the cylinder support switch bracket can be installed, can be equipped with on the switch bracket near switch.

Wherein, on the connecting rod block can be installed, during bivalve plate closing bypass valve, block be positioned on the same horizontal line near switch.

Wherein, on the connecting tube Weight plate can be installed.

Wherein, the bivalve plate can use stainless steel material to make.

The beneficial effects of the utility model are: by the zero leakage that the barometric pipe be communicated with atmosphere has guaranteed dirt air chamber and air-purifying chamber in the deduster is set; And when Weight plate being set being implemented in deduster and abnormal conditions such as supply gas pressure subcritical value occur, open the automatic protection functions of valve plate fast to guarantee that flue gas is discharged.

Description of drawings

Fig. 1 is the utility model embodiment's the plan view of bypass valve when valve plate is closed;

Fig. 2 is the partial enlarged drawing of I part among Fig. 1;

Fig. 3 is the A-A generalized section among Fig. 1.

Embodiment

The utility model will be further described below in conjunction with embodiment:

The plan view of bypass valve when valve plate is closed that Fig. 1 implements for the utility model, Fig. 2 is the partial enlarged drawing of I part among Fig. 1, Fig. 3 is the A-A generalized section among Fig. 1.As shown in Figure 1 to Figure 3, comprise that according to the bypass valve of present embodiment bypass takes over 1, is installed on bypass and takes over the barometric pipe 2 of 1 outer wall, promote cylinder 3, the connection part that is connected with lifting cylinder 3, and being installed on the bivalve plate 4 of connection part one end, bivalve plate 4 can use stainless steel material to make.

In the present embodiment, bivalve plate 4 can connect by spring 12, and spring 12 can evenly distribute around the central point of valve plate, for example when the number of spring is 3, evenly distributes (as shown in Figure 3) with 120 degree angles.

In the present embodiment, connection part can comprise interconnective connecting rod 5 and connecting tube 6, on the connecting rod 5 block 10 can be installed, and on the connecting tube 6 Weight plate 11 can be installed.

In the present embodiment, promote cylinder 3 and can be installed on the cylinder support 7 that is positioned at its below, in the cylinder support 7 switch bracket 8 can be installed, can be equipped with near switch 9 on the switch bracket.

Under the state of the normal operation of deduster, having enough supply gas pressures to drive the lifting cylinder by solenoid valve (for example two-position five-way valve) upwards mentions the bivalve plate by connection part, the bivalve plate is taken over bypass closely contacted, the air-purifying chamber of valve plate top above the dirt air chamber of obstruction flue gas flow below following valve plate enters.Because barometric pipe is identical with external atmosphere, the top of therefore top valve plate and the bottom of following valve plate are negative pressure state, have so just stoped overflowing of gas in dirt air chamber and the air-purifying chamber, thereby have realized zero leakage.Abnormal conditions occur at deduster, for example during supply gas pressure subcritical value, the bivalve plate is opened under the counterweight effect of Weight plate fast, makes flue gas discharge.

In the present embodiment, effect near switch is that the stroke of cylinder is controlled, under the state of the normal operation of deduster, near switch and block on same horizontal line, be on state near switch, send signal near switch to the control system of deduster, and this signal is shown by display screen about the cylinder stroke.Abnormal conditions occur at deduster, away from block, promptly disconnect, send signal to the control system of deduster, and this signal is shown by display screen about the cylinder stroke near switch near switch near switch.

This shows that the utility model embodiment's bypass valve is by being provided with the zero leakage that the barometric pipe be communicated with atmosphere has guaranteed dirt air chamber and air-purifying chamber in the deduster; And when Weight plate being set being implemented in deduster and abnormal conditions such as supply gas pressure subcritical value occur, open the automatic protection functions of valve plate fast to guarantee that flue gas is discharged.

The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.

Claims

1. bypass valve, it comprises the bypass adapter, is installed on the barometric pipe that described bypass is taken over outer wall, promotes cylinder, connection part, and the bivalve plate, wherein said lifting cylinder is connected in an end of described connection part, and described bivalve plate is connected in the other end of described connection part.

2. bypass valve as claimed in claim 1 is characterized in that described bivalve plate is positioned at the below of described bypass valve, and opens or closed described bypass valve by moving up and down below taking in described bypass.

3. bypass valve as claimed in claim 1 is characterized in that, described bivalve plate connects by spring.

4. bypass valve as claimed in claim 1 is characterized in that described connection part comprises interconnective connecting rod and connecting tube.

5. bypass valve as claimed in claim 1 is characterized in that, described lifting cylinder is installed on the cylinder support that is positioned at its below, in the described cylinder support switch bracket is installed, and is equipped with near switch on the described switch bracket.

6. bypass valve as claimed in claim 5 is characterized in that, on the described connecting rod block is installed, during the described bypass valve of described bivalve plate closing, and described block and describedly be positioned on the same horizontal line near switch.

7. bypass valve as claimed in claim 4 is characterized in that, on the described connecting tube Weight plate is installed.

8. as each described bypass valve of claim 1 to 7, it is characterized in that described bivalve plate uses stainless steel material to make.