CN2387333Y

CN2387333Y - Dust type gas spile valve

Info

Publication number: CN2387333Y
Application number: CN 99244295
Authority: CN
Inventors: 王志平
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-13
Filing date: 1999-09-13
Publication date: 2000-07-12
Anticipated expiration: 2009-09-13

Abstract

The utility model discloses a dust type gas spile valve. A valve cover 2 and a conducting pipe 9 connected with the left side of the valve cover 2 are arranged between an upper valve body 7 and a lower valve body 1; the valve cover 2 and the conducting pipe 9 have the functions of conducting and stopping to passages of the upper valve body and the lower valve body under the linking of a connecting rod 5, a leading screw 4, and a hand wheel 3. The utility model is characterized in that the contact surface of the conducting pipe 9 and the passage of the upper valve body 7 is an inclined plane having higher left part and lower right part; the contact surface of the valve cover 2 and the lower valve body 1 is provided with a sealing ring 21 bulged an appropriate height; front and back sides of the valve cover 2 are provided with slide tracks 8 of the inclined plane having lower left part and higher right part or a staircase-shaped inclined plane; the slide tracks 8 are used for two spacing pins 6 which have lower left parts and higher right parts and are positioned at both sides of the lower valve body 1 to slide; the functions of extruding and positioning the valve cover are achieved.

Description

Dust formula gas push-pull valve

The utility model relates to valve type, particularly a kind of dust formula gas push-pull valve.

Push-pull valve generally is used for ending of gas, it is widely used in various fields, and existing push-pull valve is in being applied to contain the device of dusty gas the time, because the surface of its seal ring and valve gap is one flat, when dust accumulates in seal ring when surperficial, capping is not tight, thereby cause ending of gas not tight, inside and outside gas is communicated, and at this moment, push-pull valve has just lost the effect that ends.

The purpose of this utility model provides a kind of to containing the dust formula gas push-pull valve of dusty gas by, good sealing effect.

For reaching above-mentioned purpose, the utility model by the following technical solutions:

The utility model mainly is made up of institutes such as upper and lower valve body, valve gap, guiding tube, position limit pin, pull bar, leading screws, upper and lower valve body is relative, the passage of the two communicates, be provided with valve gap and guiding tube between upper and lower valve body, guiding tube is located at the left side of valve gap, and the surface of contact of itself and upper valve body is high right low inclined-plane, a left side, the right side and the pull bar of valve gap are hinged, and pull bar and leading screw spiral are together, driven pull bar by the rotation of leading screw and move, thereby the guiding tube that also drives valve gap and left side thereof accordingly moves; The both sides of following valve body respectively are provided with two to projecting inward position limit pin, the height difference that two position limit pins of the same side distribute, the left side is low, the right side height, and the surface of contact of valve gap and following valve body is the plane, descend the valve channel outer ring to be provided with a sealing density ring on its plane relatively, sealing density ring protrudes the suitable height in plane one, make sealing better, both sides are provided with the slideway on inclined-plane or stepped inclined-plane before and after the valve gap, the slideway of valve gap both sides slides for position limit pin and locatees, when valve gap is moved to the left when putting in place, the passage of guiding tube and upper valve body and following valve body breaks away from, and the passage that valve gap covers down valve body is sealed by sealing density ring, and because the direction of valve gap both sides slide ramp is identical with the bevel direction that two position limit pins form, position limit pin impels the downward valve body direction extruding of valve gap, increases tightness.Inverse operation, then the passage conducting of upper and lower valve body.

Generally speaking, the passage of following valve body communicates with Environmental Conditions, and the passage of upper valve body communicates with external environment condition.

The utility model will be further described below in conjunction with drawings and Examples:

Fig. 1 analyses and observe and closed state schematic representation when using for of the present utility model.

Fig. 2 is an on state schematic representation of the present utility model.

Fig. 3 is a partial schematic sectional view of the present utility model.

1 for following valve body, 2 be valve gap, 21 for sealing density ring, 3 for handwheel, 4 for leading screw, 5 for pull bar, 6 for position limit pin, 7 for upper valve body, 8 for slideway, 9 be guiding tube.

See also Fig. 1, Fig. 2, shown in Figure 3, the utility model includes upper valve body 7, following valve body 1, valve gap 2, guiding tube 9, pull bar 5, leading screw 4, handwheel 3, position limit pin 6, wherein, on, following valve body 7,1 is relative, the passage of the two communicates, on, following valve body 7, be provided with valve gap 2 and guiding tube 9 between 1, guiding tube 9 is located at the left side of valve gap 2, guiding tube 9 is high right low inclined-plane, a left side with the surface of contact of upper valve body 7, the right side of valve gap 2 and pull bar 5 are hinged, and leading screw 4 spirals on pull bar 5 and right side are together, the handwheel 3 on rotational lead screw 4 right sides and drive pull bar 5 and move, thus the guiding tube 9 that also drives valve gap 2 and left side thereof accordingly moves; The both sides of following valve body 1 respectively are provided with two to projecting inward position limit pin 6, the height difference that two position limit pins 6 of the same side distribute, the left side is low, the right side is high, formation diagonally distributes, valve gap 2 is the plane with the surface of contact of following valve body 1, descend valve body 1 passage outer ring to be provided with a sealing density ring 21 on its plane relatively, sealing density ring 21 protrudes plane one suitable height makes sealing better, both sides, valve gap 2 front and back are provided with the slideway 8 on inclined-plane or stepped inclined-plane, the slideway 8 of valve gap 2 slides for position limit pin 6 and locatees, and the bevel direction of slideway 8 is oblique identical with position limit pin 6.When valve gap 2 is moved to the left when putting in place, guiding tube 9 breaks away from the passage of upper valve body 7 and following valve body 1, correspondingly, the passage that valve gap 2 covers down valve body 1 is sealed up by sealing density ring 21, because the direction on valve gap 2 both sides slideways 8 inclined-planes is oblique identical with position limit pin 6 formation, position limit pin 6 impels valve gap 2 downward valve body 1 direction extruding and location, increase tightness, so, position limit pin plays the effect of spacing and enhanced leaktightness, work as inverse operation, then valve gap 2 breaks away from the passage of valve body 1 down, and guiding tube 9 will be gone up, following valve body 7,1 passage UNICOM, at this moment, because be the inclined-plane between the contacting of guiding tube 9 and upper valve body 7, guiding tube 9 is owing to being to move right, so surface of contact sealing between the two is relatively good.

The utility model makes its encapsulation relatively good owing to adopted special valve gap enclosed construction, particularly when contain dust in the gas, owing to position limit pin, slideway, protrude from the sealing density ring setting of surface of contact, can effectively prevent the disappointing phenomenon that dust incrustation causes.

Claims

1, a kind of dust formula gas push-pull valve, it includes upper valve body (7), following valve body (1), valve gap (2), pull bar (5), leading screw (4), handwheel (3), guiding tube (9), guiding tube (9) is connected in the left side of valve gap (2), the hinged pull bar in valve gap (2) right side (5), pull bar (5) right side is connected with leading screw (4), handwheel (3) in turn, it is characterized in that: guiding tube (9) is high right low inclined-plane, a left side with the passage surface of contact of upper valve body (7); Valve gap (2) is the plane with the surface of contact of following valve body (1), descend valve body (1) passage outer ring to be provided with a sealing density ring (21) on its plane relatively, sealing density ring (21) protrudes the suitable height in plane one, the both sides, front and back of valve gap (2) are provided with the low right high inclined-plane, a left side or the slideway (8) on stepped inclined-plane, and slideway (8) is for position limit pin (6) slip location; The both sides of following valve body (1) respectively are provided with two position limit pins (6), two position limit pins (6) are low right high the diagonally distributing in a left side, its oblique and slideway (8) oblique identical makes slideway (8) when being moved to the left, and position limit pin (6) has extruding and spacing effect to valve gap (2).