CN208816709U - A kind of New Vacuum Valve - Google Patents

Abstract

The utility model discloses a kind of New Vacuum Valves, including the valve body with air inlet and air outlet, spool is installed in the valve chamber of valve body, spool one end passes through the closing piece being equipped with and fixes, one end is equipped with sliding groove in the valve chamber, sliding groove is for installing closing piece, valve chamber connect one end inner surface with sliding groove and is circumferentially with spring card slot, spring is installed between closing piece inner surface and spring card slot, closing piece outer surface makes spring carry out telescopic movable under the action of applying and discharging axial force, so that closing piece be made to horizontally slip in sliding groove；Wherein, spool end surface circumferential direction is equipped with external screw thread, closing piece inner cavity, which is equipped with, cooperates the internal screw thread that is spirally connected with spool one end peripheral surface external screw thread, therefore band movable valve plug moves left and right while closing piece horizontally slips in sliding groove, so that it is guaranteed that air inlet and outlet in valve chamber；The vacuum valve can not only extend the service life of spool, and the structure of vacuum valve is simple, easy to disassemble.

Description

A kind of New Vacuum Valve

Technical field

The utility model relates to a kind of valve, in particular to a kind of New Vacuum Valve.

Background technique

Vacuum pressing and casting is to can be improved the important method of the mechanical property of casting in casting technique, i.e., die-casting die is intracavitary Air extraction, makes molten metal packed type chamber under vacuum conditions, to eliminate or reduce the stomata of inside die-casting part, improves casting Mechanical property and surface quality.

Wherein, the working principle of mechanical vacuum valve is to make valve using the inertial impact force or external force of molten metal flowing mostly Core is closed.For example, existing vacuum valve is inserted into spool internal locking spool in the intracorporal latch of valve and makes by that will be arranged Vacuum valve keeps in the open state, and at the end of die-castingmold filling, the impact force of molten metal hits the spool of vacuum valve, at this point, Impulse force suffered by spool is greater than the coupling mechanism force of steel ball locking spool, and latch, which is detached from spool, makes spool retract, so that at vacuum valve In closed state, so that molten metal be avoided to enter vacuum system.

The spool for the vacuum valve mentioned in existing patent (patent No.: 204194750 U of CN) is easily broken, and Fig. 7 and Fig. 8 are special The sharp included spool figure of manuscript, spool one end end face is equipped with inner bolt hole, the other end face spill cone, and spool cylinder is equipped with Groove causes spool body supports power to become smaller equipped with inner bolt hole, is easy to happen fracture, spool main body is equipped with groove, and leads Cause one of the factor of spool fracture；Fig. 9 is the included closing piece figure of patent manuscript, does not have internal screw thread along the axis hole inner surface that axle center is set Hole.After spool fracture, before the personnel that work at the same time do not have found that vacuum valve goes wrong, it will a large amount of defect ware is produced, this Sample not only influences being normally carried out for production, but also wastes a large amount of raw material, excessively high so as to cause production cost, while also leading It has caused production efficiency low, production task cannot be completed in time, therefore in order to solve the problems, such as that spool is easily broken, it has developed a kind of novel Vacuum valve.

Summary of the invention

In order to solve the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of novel vacuum Valve, which can not only extend the service life of spool, and the structure of vacuum valve is simple, easy to disassemble.

In order to achieve the above object, the utility model is achieved using following technical scheme.

A kind of New Vacuum Valve is installed with spool, valve including the valve body with air inlet and air outlet in the valve chamber of valve body Core one end passes through the closing piece being equipped with and fixes, which is characterized in that one end is equipped with sliding groove in the valve chamber, and sliding groove is for installing lock Block, valve chamber connect one end inner surface with sliding groove and are circumferentially with spring card slot, be installed between closing piece inner surface and spring card slot Spring, closing piece outer surface makes spring carry out telescopic movable under the action of applying and discharging axial force, so that closing piece be made to slide It horizontally slips in slot；Wherein, spool end surface circumferential direction is equipped with external screw thread, and closing piece inner cavity is equipped with circumferential with described spool one end Surface external screw thread cooperates the internal screw thread that is spirally connected, therefore band movable valve plug moves left and right while closing piece horizontally slips in sliding groove, from And ensure air inlet and outlet in valve chamber.

The characteristics of the utility model and further improvement lies in that:

The spool the other end face is equipped with spill hexagon.

The closing piece shape is stairstepping.

Compared with prior art, the utility model has significant ground technical effect.

A kind of New Vacuum Valve of the utility model, spool are connected through a screw thread with closing piece, are applied on closing piece outer surface Under the action of release axial force, spring is made to carry out telescopic movable, to make closing piece band movable valve plug move left and right, compared to more existing Spool one end in technology is equipped with inner bolt hole, helps to prolong the service life；Meanwhile it being additionally provided on spool in the prior art recessed Slot, one of the factor for causing spool to be broken, originally practical to be further improved, novel vacuum valve inner spool does not need to set groove yet, To prolong the service life, therefore the vacuum valve of the utility model is not only simple in structure, easy to disassemble, and spool reduces fracture Risk, extend the service life of spool.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

Fig. 1 is a kind of whole diagrammatic cross-section of New Vacuum Valve of the utility model；

Fig. 2 is the stereoscopic schematic diagram of Fig. 1；

Fig. 3 is the spool schematic diagram of the utility model；

Fig. 4 is the diagrammatic cross-section of Fig. 3；

Fig. 5 is closing piece schematic diagram；

Fig. 6 is that spool and closing piece are coupled schematic diagram；

Fig. 7 is the spool schematic diagram of vacuum valve in the prior art；

Fig. 8 is the diagrammatic cross-section of Fig. 7；

Fig. 9 is the closing piece schematic diagram of vacuum valve in the prior art.

In figure: 1- spool；2- external screw thread；3- internal screw thread；4- spill hexagon；5- closing piece；6- spring card slot；7- air inlet Mouthful；The gas outlet 8-；9- valve chamber；10- sliding groove；11- spring；12- valve body.

Specific embodiment

As shown in Figure 1 and Figure 2, a kind of New Vacuum Valve of the utility model, including the valve with air inlet 7 and gas outlet 8 Body 12 is installed with spool 1 in the valve chamber 9 of valve body 12, and it is fixed that 1 one end of spool passes through the closing piece 5 being equipped with, which is characterized in that described One end is equipped with sliding groove 10 in valve chamber 9, and sliding groove 10 is for installing closing piece 5, valve chamber 9 and table in one end of 10 junction of sliding groove Face is circumferentially with spring card slot 6, and spring 11 is installed between 5 inner surface of closing piece and spring card slot 6, and 5 outer surface of closing piece is applying Spring 11 is set to carry out telescopic movable under the action of release axial force, so that closing piece 5 be made to horizontally slip in sliding groove 10；Such as figure 3, shown in Fig. 4 and Fig. 6, wherein 1 end surface circumferential direction of spool is equipped with external screw thread 2, and 5 inner cavity of closing piece is equipped with and the spool 1 one End peripheral surface external screw thread 2 cooperates the internal screw thread 3 that is spirally connected, therefore band movable valve plug 1 while closing piece 5 horizontally slips in sliding groove 10 It moves left and right, so that it is guaranteed that air inlet and outlet in valve chamber 9.

Wherein, as shown in figure 4,1 the other end face of spool is equipped with spill hexagon.

Wherein, as shown in figure 5,5 shape of closing piece is stairstepping.

For the vacuum valve of the utility model compared with the vacuum valve of patent in background technique, it is hexagonal that spool is equipped with spill One end shortens 7mm on the basis of the original.

Wherein, 5 outer surface of closing piece makes 5 compressed spring 11 of closing piece under the action of axial force, and then 1 one end of spool is pushed away Air inlet 7 is opened in valve chamber 9 out, and after axial force revocation, the bounce of spring 11 restores closing piece 5, so that spool 1 restores Original state, air inlet 7 are closed, and gas outlet 8 is exhausted, and under axial force reciprocating, vacuum valve are made to work, therefore this is practical New structure is simple, easy to disassemble, and extends the service life of spool.

Although the embodiments of the present invention are described in conjunction with attached drawing above, the utility model not office It is limited to above-mentioned specific embodiments and applications field, above-mentioned specific embodiment is only schematical, directiveness, and It is not limiting；Those skilled in the art are not departing from the utility model claims under the enlightenment of specification In the case where the range protected, a variety of forms can also be made, these belong to the column of the protection of the utility model.

Claims (3)

1. a kind of New Vacuum Valve, including the valve body (12) with air inlet (7) and gas outlet (8), the valve chamber (9) of valve body (12) It is inside installed with spool (1), it is fixed that spool (1) one end passes through the closing piece (5) being equipped with, which is characterized in that the interior one end of the valve chamber (9) Equipped with sliding groove (10), sliding groove (10) is for installing closing piece (5), table in one end of valve chamber (9) and sliding groove (10) junction Face is circumferentially with spring card slot (6), is installed between closing piece (5) inner surface and spring card slot (6) spring (11), and closing piece (5) is outside Surface makes spring (11) to carry out telescopic movable under the action of applying and discharging axial force, to make closing piece (5) in sliding groove (10) it horizontally slips in；Wherein, spool (1) end surface circumferential direction be equipped with external screw thread (2), closing piece (5) inner cavity be equipped with it is described Spool (1) one end peripheral surface external screw thread (2) cooperates the internal screw thread (3) being spirally connected, therefore closing piece (5) left and right in sliding groove (10) is slided Band movable valve plug (1) moves left and right while dynamic, so that it is guaranteed that the interior air inlet of valve chamber (9) and outlet.

2. New Vacuum Valve according to claim 1, which is characterized in that spool (1) the other end face is equipped with spill Hexagon.

3. New Vacuum Valve according to claim 1, which is characterized in that closing piece (5) shape is stairstepping.