CN201359134Y

CN201359134Y - Manual gas valve

Info

Publication number: CN201359134Y
Application number: CNU200920141991XU
Authority: CN
Inventors: 竺开明; 虞吉中
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2009-12-09
Anticipated expiration: 2019-03-10

Abstract

The utility model discloses a manufacturing technology of manual gas valve products and overcomes the defect that sealing elements of the existing con-generic products are easy to age and lose efficacy due to long-term compression. The manual gas valve comprises a valve body and a valve core, wherein the valve core is internally provided with a valve rod which can move up and down; a guide sleeve is arranged at the upper end of the valve core; a flat connecting rod is arranged at the upper end of the valve rod, extends out of the guide sleeve and is embedded in a knob cavity which is fastened with the guide sleeve; the circumferential wall of the axle part of the valve rod is radially provided with a guide pin; a guide chute corresponding to the guide pin is arranged on the inner wall of the guide sleeve and extends spirally; the lower end of the valve rod is provided with a sealing washer and a sealing post which is provided with an annular groove; and the sealing washer is embedded in the annular groove of the sealing post. The sealing washer of the manual gas valve has small contact stress, little deformation and long service life, can automatically clean impurities adhered to the inner wall of the valve rod, and is widely applicable to auxiliary applications in the field of gas transmission or pneumatic control.

Description

Manual air valve

Technical field

The utility model relates to a kind of air valve manufacturing technology that is installed on gas transmission pipeline or pneumatic control field, especially refers to the sealing configuration technology of air valve.

Background technique

In gas transmission or pneumatic control field, the height of air valve quality and performance will directly influence the normal operation of the safety and the pneumatic system of gas transmission.This air valve is by an end air inlet, behind the valve core cavity passage, export by the other end, relatively typically the name of announcing on January 12nd, 2005 as State Intellectual Property Office is called " manually bleed valve ", the patent No. is the utility model patent of ZL200320126912.0, it is " by valve body; push rod; button; O type pad; stage clip is formed, and an end of valve body is established outside thread, and through hole is established in the valve body axle center; outer screw thread one end has central small hole, concentric becomes gross porosity again, and stage clip is set in the gross porosity, and push rod passes central small hole, pass stage clip and button is connected and fixed, one end of stage clip withstands on the valve body small bore end, and the other end withstands on the button, utilizes the elastic force of stage clip to make the O type pad on the push rod contact closing seam with the valve body end face." still, what this product adopted is the end face seal mode, promptly its O shape pad contacts closure with the valve body end face, and this structure has following deficiency: the one, sealability depends on the pressure that contacts end face; The 2nd, O shape pad is easy ageing failure owing to long-term pressurized; The 3rd, impurity easily causes seal failure after being embedded in the contact end face.

The model utility content

The technical problems to be solved in the utility model is to overcome the long-term pressurized of sealed member that existing like product exists and ageing failure, impurity easily are embedded in defective and the deficiency that the contact jaw face rings sealability easily, to society provide that a kind of elastic sealing element contact stress is little, long service life and can clear up the manual air valve product of valve core channel impurity automatically, it is required to satisfy the supporting application of gas transmission or pneumatic control field.

The technological scheme that its technical problem that solves the utility model adopts is: manually air valve comprises valve body and spool, is provided with valve rod moving up and down in the described spool; Described spool upper end is provided with guide sleeve, and described valve rod upper end is provided with flat partially connecting rod, and described flat partially connecting rod stretches out in guide sleeve, is embedded at the knob inner chamber that is interlockingly connected with described guide sleeve; Described valve rod axial region peripheral wall is radially established pilot pin, and described guide sleeve inwall is provided with and the corresponding guide chute of described pilot pin, and described guide chute type in the shape of a spiral extends; Seal washer is established in described valve rod lower end.

The sealing column that the tool annular groove is established in described valve rod lower end, described seal washer is embedded in the annular groove of described sealing column.

The manual air valve of the utility model drives flat partially connecting rod by rotary knob, rotates in the lump together with valve rod, and the pilot pin of valve rod peripheral wall is subjected to the guide chute guiding and realizes moving up and down, and opens or close air flue.The sealing of whole air valve relies on described spool inwall fully and contacts with the seal washer peripheral wall and realize that the seal washer contact stress is little, and distortion is few, and the life-span is long.Simultaneously,, can clear up the impurity that adheres to described spool inwall automatically, effectively guarantee the proper functioning of seal arrangement because seal washer often moves up and down at valve core cavity.Compare than existing product, have advantage simple in structure, easily manufactured, with low cost, it is required to be widely used in the supporting application of gas transmission or pneumatic control field.

Description of drawings

Fig. 1 is the utility model on state structural representation.

Fig. 2 is the utility model closed condition structural representation.

Embodiment

As depicted in figs. 1 and 2, the manual air valve of the utility model comprises the valve body 1 of tool gas channel and is installed on the spool 4 of valve body 1 inner chamber that described valve body 1 two ends are respectively equipped with intake interface 2 and exhaust port 3; Be provided with multiple-sealed circle between described spool 4 outer walls and described valve body 1 inwall; Be provided with valve rod 13 moving up and down in the described spool 4, described spool 4 upper ends are provided with guide sleeve 5, and described valve rod 13 upper ends are provided with flat partially connecting rod 7, and described flat partially connecting rod 7 stretches out in guide sleeve 5, is embedded at knob 6 inner chambers 12 that are interlockingly connected with described guide sleeve 5.The sealing column 10 that the tool annular groove is established in described valve rod 13 lower ends is embedded seal washer 11 in the annular groove of described sealing column 10.Described valve rod 13 axial region peripheral wall are established footpath guide pins 8, and described guide sleeve 5 inwalls are provided with and described pilot pin 8 corresponding guide chutes 9, and described guide chute 9 type in the shape of a spiral extends.

Continue in conjunction with the accompanying drawings summary the utility model working principle below.During on state, gas is entered by described intake interface 2 as shown in Figure 1, and the opened gap between described spool 4 lower ends and described valve rod 13 sealing column 10 is by described exhaust port 3 outputs.In the time of need closing air flue, the described knob 6 that turns clockwise drives described flat partially connecting rod 7 and rotates in the lump together with described valve rod 13, and this moment, described valve rod 13 pilot pins 8 were subjected to described guide chute 9 guiding, in rotation, move up, until the closed condition that arrives as shown in Figure 2.The sealing of whole air valve relied on described spool 4 inwalls fully and contacted with seal washer 11 peripheral wall and realize that described seal washer 11 contact stress are little this moment, distortion less, long service life.Because described seal washer 11 often moves up and down at spool 4 inner chambers, clear up the impurity that adheres to described spool 4 inwalls automatically simultaneously, guaranteed the proper functioning of seal arrangement.

Claims

1, a kind of manual air valve comprises valve body (1) and spool (4), is provided with valve rod moving up and down (13) in the described spool (4); Described spool (4) upper end is provided with guide sleeve (5), it is characterized in that: described valve rod (13) upper end is provided with flat partially connecting rod (7), and described flat partially connecting rod (7) stretches out in guide sleeve (5), is embedded at knob (6) inner chamber (12) that is interlockingly connected with described guide sleeve (5); Described valve rod (13) axial region peripheral wall is radially established pilot pin (8), and described guide sleeve (5) inwall is provided with and the corresponding guide chute of described pilot pin (8) (9), and described guide chute (9) type in the shape of a spiral extends; Seal washer (11) is established in described valve rod (13) lower end.

2, manual according to claim 1 air valve, it is characterized in that: the sealing column (10) of tool annular groove is established in described valve rod (13) lower end, and described seal washer (11) is embedded in the annular groove of described sealing column (10).