CN203309126U

CN203309126U - Air inlet valve

Info

Publication number: CN203309126U
Application number: CN2013202651277U
Authority: CN
Inventors: 王勤
Original assignee: SHANGHAI NANYUAN MACHINERY Co Ltd
Current assignee: SHANGHAI NANYUAN MACHINERY Co Ltd
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-11-27
Anticipated expiration: 2023-05-15

Abstract

An air inlet valve comprises a valve body, a cylinder body, a piston, a valve rod, a valve plate and a gland. Compared with an existing air inlet valve, the air inlet valve has the advantages that a valve cover is eliminated, namely, a main part is eliminated, therefore, materials are saved, and the weight of the air inlet valve is reduced; besides, a machining procedure is eliminated; therefore, the air inlet valve has good economic and social benefits.

Description

Suction valve

Technical field

The utility model belongs to valve technology field, specifically, is about a kind of suction valve.

Background technique

The structure of existing suction valve as shown in Figure 1, comprises valve body 100, valve gap 110, and cylinder body 120, piston 130, valve rod 140, valve plate 150, gland 160, wherein:

Valve body 100, one sides are suction port 101, and below is air outlet 102, and opposite side is installed valve gap 110;

Valve gap 110, cover a side of valve body 100, and centre offers be used to the through hole 111 that wears cylinder body 120, and the outer rim of through hole 111 is provided with again a circle projection 112, to form a step 113;

Cylinder body 120, be arranged in the through hole 111 of valve gap 110, inside is piston hole 121, and a side of close valve gap 110 is provided with bead 122, this bead 122 leans with the ladder 113 of valve gap 110, and the opposite side of cylinder body 120 seals and be provided with a through hole 123 be used to wearing valve rod 140;

Piston 130, be contained in the piston hole 121 of cylinder body 120 and can be in the interior movement of piston hole 121, and inside is provided with valve rod hole 131;

Valve rod 140, comprise spacing section 141 and active segment 142, the external diameter of spacing section 141 is greater than active segment 142, this spacing section inboard that is resisted against the valve rod hole 131 of piston 130, on active segment 142, be arranged with a spring 143, one end of this spring 143 is resisted against spacing section 141, and the other end is resisted against on the inwall of cylinder body 120;

Valve plate 150, be arranged at the outside of the through hole 123 of the inner cylinder body 120 of valve body 100, is provided with seal ring 151 near a side of valve body 100 suction ports 101;

Gland 160, be covered on the outside of valve gap 110, and centre offers pressurization hole 161, the internal diameter of gland 160 1 sides is less, thereby form a step 162, the side that internal diameter is less and the outside of piston 130 lean, and the step 162 of lid is corresponding to the projection 112 of valve gap 110.

Like this, when needs are closed suction valve, 161 pairs, pressurization hole piston 130 by gland 160 pressurizes, pushing piston 130 is to the medial movement of cylinder body 120, so pushing tow valve rod 140 to overcome the jacking force of spring 143 protruding from the through hole 123 of cylinder body 120, pushing tow valve plate 150 moves to the suction port 101 of valve body 110, until valve plate 150 withstands suction port 101, now, lean on the effect of set seal ring 151 on valve plate 150, suction valve is closed; And, when the needs air inlet, stopping the pressurization to suction valve, piston 130 pressures disappear, now spring 143 rely on himself elastic force pushing tow valve rod 140 together with the outer side shifting of piston 130 to cylinder body 120, interlock valve plate 150 leaves suction port 101, thereby opens suction valve, recovers air inlet.

The suction valve of this structure, because its part is more, process loaded down with trivial details and processing cost is higher, therefore is necessary to be improved.

The model utility content

The purpose of this utility model just is existing suction valve is done to necessary improvement, to overcome the deficiency existed.

For achieving the above object, suction valve of the present utility model comprises valve body, cylinder body, piston, valve rod, valve plate and gland, wherein:

Valve body, a side are suction port, and below is air outlet, and opposite side is installed cylinder body;

Cylinder body, cover a side of valve body, inner for be used to holding the piston hole of piston, near the one side closed of suction port and be provided with one be used to wearing the through hole of valve rod;

Piston, be contained in the piston hole of cylinder body and can in piston hole, move, and the inside of piston is provided with valve rod hole;

Valve rod, comprise backstop section and telescopic section, and the external diameter of backstop section is greater than telescopic section, and this backstop section is resisted against the inboard of the valve rod hole of piston, on telescopic section, is arranged with a spring, and an end of this spring is resisted against the backstop section, and the other end is resisted against on the inwall of cylinder body;

Valve plate, be arranged at the outside of the through hole of valve inner cylinder body, is provided with seal ring near a side of valve body suction port;

Gland, be covered on the outside of cylinder body, simultaneously as the limit position part of piston, on lid, offers the pressurization hole.

Preferably, the pressurization hole of described gland is opened in the center of lid.

According to the utility model, the outer rim of a side of the close gland of described cylinder body is provided with on a ，Qie extension, extension and offers attachment hole, for by link and valve body, being connected and fixed.

The utility model is compared existing suction valve and has been saved valve gap, has reduced by a main part, has not only saved material, has alleviated the weight of suction valve, and has also lacked a procedure in processing, has extraordinary economic and social benefit.

The accompanying drawing explanation

Fig. 1 is the structure sectional view of existing suction valve.

Fig. 2 is the structure sectional view of suction valve of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, with specific embodiment, suction valve of the present utility model is described in further detail.Should be understood that following examples are only be used to the utility model is described but not be used to limiting scope of the present utility model.

As shown in Figure 2, be the structure sectional view of suction valve of the present utility model, as seen from the figure, suction valve of the present utility model comprises valve body 200, cylinder body 210, and piston 220, valve rod 230, valve plate 240, gland 250, wherein:

Valve body 200, one sides are suction port 201, and below is air outlet 202, and opposite side is installed cylinder body 210;

Cylinder body 210, cover a side of valve body 200, innerly is the piston hole 211 be used to holding piston 220, near the one side closed of suction port 201 and be provided with a through hole 212 be used to wearing valve rod 230;

Piston 220, be contained in the piston hole 211 of cylinder body 210 and can be in the interior movement of piston hole 211, and the inside of piston 220 is provided with valve rod hole 221;

Valve rod 230, comprise backstop section 231 and telescopic section 232, the external diameter of backstop section 231 is greater than telescopic section 232, this backstop section 231 is resisted against the inboard of the valve rod hole 221 of piston 220, on telescopic section 232, be arranged with a spring 233, one end of this spring 233 is resisted against backstop section 231, and the other end is resisted against on the inwall of cylinder body 210;

Valve plate 240, be arranged at the outside of the through hole 212 of the inner cylinder body 210 of valve body 200, is provided with seal ring 241 near a side of valve body 200 suction ports 201;

Gland 250, be covered on the outside of cylinder body 210, simultaneously as the limit position part of piston 220, on lid 250, offers pressurization hole 251, and preferred, this pressurization hole 251 is opened in lid 250De center.

The suction valve of the present embodiment, the outer rim of a side of its cylinder body 210 close glands 250 is provided with on a 213，Qie extension, extension 213 and offers attachment hole 214, for by link, as bolt, is connected and fixed with valve body 200.

When the suction valve air inlet, valve rod stop section 231 is subject to the pushing tow of spring 233, and piston 220 is pushed into and is resisted against gland 250, and valve plate 240 is in the side near cylinder body 210 suction ports 201, and suction port 201 is in open state; And when needs are closed suction valve, 251 pairs, pressurization hole piston 220 by gland 250 pressurizes, pushing piston 220 is to the medial movement of cylinder body 210, and then pushing tow valve rod 230 to overcome the jacking force of spring 233 protruding from the through hole 212 of cylinder body 210, pushing tow valve plate 240 moves to the suction port 201 of valve body 200, until valve plate 240 withstands suction port 201, now, rely on the effect of set seal ring 241 on valve plate 240, suction valve is closed.

Compare existing suction valve, suction valve of the present utility model has saved valve gap, has reduced by a main part, has not only saved material, has alleviated the weight of suction valve, and has also lacked a procedure in processing, has extraordinary economic and social benefit.

Claims

1. a suction valve, is characterized in that, described suction valve comprises valve body, cylinder body, piston, valve rod, valve plate and gland, wherein:

2. suction valve as claimed in claim 1, is characterized in that, the pressurization hole of described gland is opened in the center of lid.

3. suction valve as claimed in claim 1, be characterised in that, the outer rim of a side of the close gland of described cylinder body is provided with on a ，Qie extension, extension and offers attachment hole, for by link and valve body, being connected and fixed.