CN218761432U

CN218761432U - Sealing assembly for electromagnetic high-vacuum baffle valve

Info

Publication number: CN218761432U
Application number: CN202223186178.9U
Authority: CN
Inventors: 盛一冰; 何善良; 姚勇
Original assignee: Ningbo Instrument Valve Factory
Current assignee: Ningbo Instrument Valve Factory
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-28
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a high vacuum seal assembly for baffle valve of electromagnetism, it includes electromagnetism head, disk seat and valve body, the electromagnetism head includes housing, sleeve, decides the iron core, moves iron core and solenoid, it connects in the sleeve to move the iron core lift, it is located and moves the iron core top to decide the iron core fixed position, solenoid sets up along sleeve circumference, be provided with the spread groove on the valve body, disk seat upper portion fixed connection is in the installation cavity, disk seat lower part fixed connection is in the spread groove, it has medium access way and the medium exit channel with the spread groove intercommunication to open on the valve body, it connects a valve gap to move the iron core top, be equipped with the spring between valve gap bottom and the disk seat, open on the valve gap top has an annular groove, be equipped with the sealed pad of shutoff medium exit channel in the annular groove, the valve gap top is located sealed pad top and still is connected with a fastening block that compresses tightly. The utility model discloses not only the leakproofness is better, avoids moving the wearing and tearing of iron core moreover.

Description

Sealing assembly for electromagnetic high-vacuum baffle valve

Technical Field

The utility model relates to a flapper valve technical field specifically is a seal assembly for electromagnetism high vacuum flapper valve.

Background

Vacuum valves are elements used in vacuum systems to regulate the flow of gas and to cut or open a line. The electromagnetic high-vacuum baffle valve uses compressed air as power, changes the direction of the air path through the electromagnetic directional valve, and executes the opening and closing movement of the baffle valve driven by the cylinder. The baffle valve has the advantages of simple structure, short opening and closing time, safety, reliability, firmness, durability, automatic control and the like, and is widely applied to the high-tech fields of electronics, chemical engineering, metallurgy, aviation, aerospace, materials, biomedicine, atomic energy, universe exploration and the like.

People often neglected the sealed problem of the movable iron core that is equivalent to the valve plate when stifled the business turn over gas port, the terminal surface of movable iron core directly supports in and covers in the business turn over gas port in order to reach sealed effect, but movable iron core is because the diameter is less, and be stainless steel stereoplasm metal with the valve body material of business turn over gas port department, the long-time business turn over gas port that constantly strikes in movable iron core top, make movable iron core tip warp easily, make the leakproofness when both offset difficult to guarantee, in addition, when valve body business turn over gas port diameter ratio is big than movable iron core's diameter, need add a valve gap on movable iron core top, and how to set up the valve gap, make both guarantee to have good leakproofness, guarantee the valve gap not wearing and tearing again, be the urgent problem that needs to solve in this technical field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above problems of the high vacuum flapper valve, a seal assembly for an electromagnetic high vacuum flapper valve is proposed.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a sealing component for electromagnetism high vacuum baffle valve, it includes electromagnetism head, disk seat and valve body, the electromagnetism head includes housing, sleeve, decides the iron core, moves iron core and solenoid, be equipped with the installation cavity in the housing, the installation cavity is located to the sleeve cover, it goes up and down to connect in the sleeve to move the iron core, it is fixed to set up in the installation cavity and is located and moves the iron core top to decide the iron core, solenoid is located the installation cavity and sets up along sleeve circumference, be provided with the spread groove on the valve body, disk seat upper portion fixed connection is in the installation cavity, disk seat lower part fixed connection is in the spread groove, it has medium inlet channel and the medium exit channel with the spread groove intercommunication to open on the valve body, a valve gap is connected on the moving iron core top, be equipped with the spring between valve gap bottom and the disk seat, open on the valve gap top has an annular groove, be equipped with the sealed pad of shutoff medium exit channel in the annular groove, the valve gap top is located sealed top and still is connected with a tight fastening block that compresses tightly sealed the pad.

After the structure more than adopting, the utility model has the advantages of it is following: the movable iron core reciprocates under the drive of fixed iron core and solenoid, support in and the purpose of shutoff medium outlet channel's entry end in order to reach its top, and the top of movable iron core is equipped with a valve gap, the top of valve gap is equipped with sealed the pad, make sealed direct with medium outlet channel's entry end contact and shutoff of filling up, direct collision between avoiding moving iron core and the medium outlet channel entry end, the life of movable iron core has been prolonged, simultaneously compress tightly sealed the pad through a fastening block who is fixed in the valve gap top, it is not hard up or drop to avoid sealed the pad under long-term in service behavior.

Preferably, an axial mounting hole is formed in the center of the top end of the movable iron core, a radial through hole is formed in the lateral direction of the top end of the movable iron core, the axial mounting hole is communicated with the radial through hole, a mounting portion capable of being inserted into the mounting hole pipe is arranged at the bottom end of the valve cover, a pin hole communicated with the radial through hole is formed in the lateral direction of the mounting portion, and a pin shaft is inserted between the radial through hole and the pin hole, so that the valve cover can be detachably connected to the movable iron core.

Preferably, the valve gap top end center is opened threaded hole, threaded hole installs a fastener, open on the fastening piece has the through-hole, the fastener passes the through-hole and will fasten soon the dismantlement and connect in the valve gap top, the fastening piece loading and unloading of being convenient for.

Preferably, the top end of the valve cover is located in the inner circle of the annular groove and is subjected to sinking treatment, so that a gap is reserved between the fastening block and the top end of the valve cover, when the fastening block tightly presses the sealing gasket, the fastening block can be used as a buffer area for the sealing gasket to be extruded and deformed, and the sealing gasket can be stably tightly pressed in the annular groove to prevent looseness.

Preferably, the sealing gasket is made of fluororubber, and the fluororubber has high chemical stability and is the best medium-resistant one of all elastomers at present.

Preferably, the inlet end of the medium outlet channel is positioned in the center of the bottom of the connecting groove and is in a convex shape and abuts against the sealing pad, so that the inlet end of the medium outlet channel can be opposite to the position of the sealing pad to ensure the sealing property.

Drawings

Fig. 1 is a sectional view of the whole structure of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Wherein, 1, an electromagnetic head; 1-1, a housing; 1-2, sleeve; 1-3, fixing iron core; 1-4, a movable iron core; 1-5, electromagnetic coil; 1-6, installing a cavity; 1-7, axial mounting holes; 1-8, radial through holes; 1-9, pin holes; 1-10, a pin shaft; 2. a valve seat; 3. a valve body; 3-1, connecting grooves; 3-2, a medium inlet channel; 3-3, a medium outlet channel; 3-4, a spring; 4. a valve cover; 4-1, an annular groove; 4-2, sealing gaskets; 4-3, and fastening blocks.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

The utility model provides a sealing component for an electromagnetic high vacuum baffle valve, as shown in figure 1, comprising an electromagnetic head 1, a valve seat 2 and a valve body 3, wherein the electromagnetic head 1 comprises a housing 1-1, a sleeve 1-2, a fixed iron core 1-3, a movable iron core 1-4 and an electromagnetic coil 1-5, a mounting cavity 1-6 is arranged in the housing 1-1, the sleeve 1-2 is sleeved in the mounting cavity 1-6 and is positioned at the central position of the mounting cavity 1-6, the electromagnetic coil 1-5 is positioned in the mounting cavity 1-6 and is circumferentially arranged around the sleeve 1-2, the movable iron core 1-4 is sleeved in the sleeve 1-2, the fixed iron core 1-3 is also fixed in the sleeve 1-2 and is positioned right above the movable iron core 1-4, the fixed iron core 1-3 is fixed relative to the movable iron core 1-4, the valve body 3 is provided with a connecting groove 3-1, the connecting groove 3-1 is similar to a mounting groove, the upper part of the valve seat 2 is fixedly connected in a mounting cavity 1-6, namely, the valve seat is fixedly connected with the sleeve 1-2, the lower part of the valve seat 2 is fixedly connected in the connecting groove 3-1, so that the sleeve 1-2 is communicated with the connecting groove 3-1, sealing rings are arranged at the joints among the valve seat 2, the sleeve 1-2 and the connecting groove 3-1 to keep the tightness between the sleeve 1-2 and the connecting groove 3-1, the housing 1-1 is connected with the valve seat 2, the valve seat 2 is connected with the valve body 3, namely, the electromagnetic head 1 is fixedly connected on the valve body 3 through the valve seat 2.

The valve body 3 is provided with a medium inlet channel 3-2 and a medium outlet channel 3-3 which are communicated with the connecting groove 3-1, namely the medium inlet channel 3-2, the medium outlet and the connecting groove 3-1 are communicated with each other, as the name suggests, external medium enters the connecting groove 3-1 in the valve body 3 from the medium inlet channel 3-2 and is discharged from the medium outlet channel 3-3 through the valve body 3. The medium inlet channel 3-2 and the medium outlet channel 3-3, in addition to the channels, also comprise an inlet end and an outlet end, wherein the inlet end of the medium outlet channel 3-3 is located directly below the movable iron core 1-4.

An axial mounting hole 1-7 is formed in the center of the top end of the movable iron core 1-4, a radial through hole 1-8 is formed in the lateral direction of the top end of the movable iron core 1-4, the axial mounting hole 1-7 is communicated with the radial through hole 1-8, a mounting portion capable of being inserted into the mounting hole is arranged at the bottom end of the valve cover 4, a pin hole 1-9 communicated with the radial through hole 1-8 is formed in the lateral direction of the mounting portion, and a pin shaft 1-10 is inserted between the radial through hole 1-8 and the pin hole 1-9, so that the valve cover 4 can be detachably connected to the movable iron core 1-4.

A spring 3-4 is arranged between the bottom ends of the valve seat 2 and the valve cover 4, the bottom end of the valve cover 4 is provided with a stepped structure, one end of the stepped structure abuts against the edge of the valve seat 2, and the other end of the stepped structure abuts against the inside of the stepped structure of the valve cover 4.

When the power is cut off, the valve cover 4 is propped against and seals the inlet end of the medium outlet channel 3-3 by the acting force of the spring 3-4; when the electromagnetic coil 1-5 is electrified, the fixed iron core 1-3 generates magnetic force to suck the movable iron core 1-4, the movable iron core 1-4 drives the valve cover 4 to be far away from the inlet end of the medium outlet channel 3-3, and at the moment, the medium inlet channel 3-2, the connecting groove 3-1 and the medium outlet channel 3-3 form a passage.

As shown in figure 2, the top end of the valve cover 4 is provided with an annular groove 4-1, a sealing gasket 4-2 for plugging a medium outlet channel 3-3 is arranged in the annular groove 4-1, the top end of the valve cover 4 is positioned above the sealing gasket 4-2 and is also connected with a fastening block 4-3 for compressing the sealing gasket 4-2, the sealing gasket 4-2 is fixed in the annular groove 4-1 to prevent the sealing gasket 4-2 from falling off, the fastening block 4-3 is fixed in a mode that a threaded hole is formed in the center of the top end of the valve cover 4, a fastening piece is installed in the threaded hole, a through hole is formed in the fastening block 4-3, and the fastening piece penetrates through the through hole to detachably connect the fastening piece to the top end of the valve cover 4.

At the moment, the sealing gasket 4-2 is made of rubber, and the rubber has certain elastic deformation due to the fact that the material is soft, so that the sealing gasket can be sealed when the rubber is abutted against the inlet end of the medium outlet channel 3-3, hard collision between the valve cover 4 and the inlet end of the medium outlet channel 3-3 is avoided, and leakage cannot occur even in long-time use.

In the embodiment, the rubber is fluororubber which has high chemical stability, is the best medium-resistant elastomer in all elastomers at present and is high-temperature resistant and corrosion resistant, so that irreversible deformation or damage can not occur even after long-time use.

It should be noted that the top end of the valve cover 4 is located in the inner circle of the annular groove 4-1 and is subjected to sinking treatment, so that a gap is reserved between the fastening block 4-3 and the top end of the valve cover 4, and when the fastening block 4-3 is pressed against the sealing gasket 4-2, the fastening block can be used as a buffer area for the sealing gasket 4-2 to be extruded and deformed, and the sealing gasket 4-2 can be stably pressed in the annular groove 4-1 to prevent loosening.

It should be noted that the inlet end of the medium outlet channel 3-3 is located at the center of the bottom of the connecting groove 3-1 and is convex, and the outer diameter of the protrusion is gradually reduced from the bottom to ensure the overall strength of the protrusion, so that the protrusion is not easily deformed when the sealing gasket 4-2 contacts the protrusion.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. It is therefore intended that the appended claims be interpreted as covering all alterations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims

1. The sealing assembly for the electromagnetic high-vacuum baffle valve comprises an electromagnetic head (1), a valve seat (2) and a valve body (3), wherein the electromagnetic head (1) comprises a housing (1-1), a sleeve (1-2), a fixed iron core (1-3), a movable iron core (1-4) and an electromagnetic coil (1-5), a mounting cavity (1-6) is arranged in the housing (1-1), the sleeve (1-2) is sleeved in the mounting cavity (1-6), the movable iron core (1-4) is connected in the sleeve (1-2) in a lifting manner, the fixed iron core (1-3) is fixedly arranged in the mounting cavity (1-6) and above the movable iron core (1-4), the electromagnetic coil (1-5) is arranged in the mounting cavity (1-6) and circumferentially along the sleeve (1-2), the valve body (3) is provided with a connecting groove (3-1), the upper part of the valve seat (2) is fixedly connected in the mounting cavity (1-6), the lower part of the valve seat (2) is fixedly connected in the mounting cavity (3-1), and an inlet channel (3-3) and a medium channel (3) are communicated with an outlet of the valve body (3), the movable iron core sealing device is characterized in that the top end of the movable iron core (1-4) is connected with a valve cover (4), a spring (3-4) is arranged between the bottom end of the valve cover (4) and the valve seat (2), an annular groove (4-1) is formed in the top end of the valve cover (4), a sealing gasket (4-2) for sealing a medium outlet channel (3-3) is arranged in the annular groove (4-1), and a fastening block (4-3) for pressing the sealing gasket (4-2) is further connected to the top end of the valve cover (4) above the sealing gasket (4-2).

2. The seal assembly for an electromagnetic high vacuum flapper valve of claim 1 wherein: the movable iron core (1-4) is characterized in that an axial mounting hole (1-7) is formed in the center of the top end of the movable iron core (1-4), a radial through hole (1-8) is formed in the lateral direction of the top end of the movable iron core (1-4), the axial mounting hole (1-7) is communicated with the radial through hole (1-8), a mounting portion which can be inserted into the mounting hole pipe is arranged at the bottom end of the valve cover (4), a pin hole (1-9) communicated with the radial through hole (1-8) is formed in the lateral direction of the mounting portion, and a pin shaft (1-10) is inserted between the radial through hole (1-8) and the pin hole (1-9), so that the valve cover (4) can be detachably connected to the movable iron core (1-4).

3. The seal assembly for an electromagnetic high vacuum flapper valve of claim 1 wherein: the valve cover is characterized in that a threaded hole is formed in the center of the top end of the valve cover (4), a fastening piece is installed in the threaded hole, a through hole is formed in the fastening block (4-3), and the fastening piece penetrates through the through hole to detachably connect the fastening piece to the top end of the valve cover (4).

4. The seal assembly for an electromagnetic high vacuum flapper valve of claim 3 wherein: the top end of the valve cover (4) is positioned in the inner circle part of the annular groove (4-1) and is subjected to sinking treatment, so that a gap is reserved between the fastening block (4-3) and the top end of the valve cover (4).

5. The seal assembly for an electromagnetic high vacuum flapper valve of claim 1 wherein: the sealing gasket (4-2) is made of fluororubber.

6. The seal assembly for an electromagnetic high vacuum flapper valve of claim 1 wherein: the inlet end of the medium outlet channel (3-3) is positioned in the center of the bottom of the connecting groove (3-1) and is in a convex shape and is abutted against the sealing gasket (4-2).