CN212131318U - Valve gate - Google Patents

Abstract

The utility model provides a valve, which comprises a cavity, a cylinder, a valve seat, a valve rod component and a bellows component, wherein the cavity is provided with a cavity, the cavity is provided with a first central hole and a second central hole which are oppositely arranged, and the first central hole and the second central hole are both communicated with the cavity; the cylinder is arranged on the cavity, and a piston rod of the cylinder corresponds to the first central hole; the valve seat is provided with a feed inlet and a discharge outlet, the feed inlet is communicated with the discharge outlet through a channel, and the second central hole is communicated with the channel; the valve rod assembly is connected to a piston rod of the air cylinder and can move between a first position and a second position, and when the valve rod assembly is at the first position, the valve rod assembly blocks the channel to disconnect the feed port and the discharge port; when the device is at the second position, the feed inlet is communicated with the discharge outlet; the corrugated pipe assembly is sleeved outside the valve rod assembly, one end of the corrugated pipe assembly is connected to the air cylinder in a sealing mode, and the other end of the corrugated pipe assembly is connected to the valve rod assembly in a sealing mode, so that a pipe inner cavity and a pipe outer cavity which are not communicated with each other are formed.

Description

Valve gate

Technical Field

The utility model discloses relate to valve technical field on the whole, particularly, relate to a valve that sealing performance is good.

Background

In the vacuum static pouring process, the valve not only plays a role in discharging or stopping materials, but also prevents external air (including gas in the cylinder) from entering the materials in the discharging or stopping process, so that small bubbles exist in the materials, the quality of the materials is influenced, and the yield of final finished products is further influenced.

The sealing performance of the valve in the prior art is poor, and especially when the power source of the valve selects the air cylinder, the gas in the air cylinder often flows into the material, so that the quality of the material is greatly influenced.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

A main object of the utility model is to provide a valve to gas in the cylinder that exists among the solution prior art often flows and scurries into in the material, thereby influences the problem of material quality.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

according to an aspect of the present invention, there is provided a valve, comprising a cavity, a cylinder, a valve seat, a valve rod assembly and a bellows assembly, wherein the cavity has a cavity, the cavity has a first central hole and a second central hole, which are oppositely disposed, and the first central hole and the second central hole are both communicated with the cavity; the cylinder is arranged on the cavity, and a piston rod of the cylinder corresponds to the first center hole; the valve seat is provided with a feeding hole and a discharging hole, the feeding hole is communicated with the discharging hole through a channel, and the second central hole is communicated with the channel; the valve rod assembly is connected to the piston rod of the air cylinder and can move between a first position and a second position, and in the first position, the valve rod assembly blocks the channel to disconnect the feed port and the discharge port; when the second position is adopted, the feed inlet is communicated with the discharge outlet; the corrugated pipe assembly is sleeved outside the valve rod assembly, one end of the corrugated pipe assembly is connected to the air cylinder in a sealing mode, and the other end of the corrugated pipe assembly is connected to the valve rod assembly in a sealing mode, so that a pipe inner cavity and a pipe outer cavity which are not communicated with each other are formed.

According to some embodiments of the present invention, the valve rod assembly includes a valve rod and a connecting seat, the valve rod detachably connected to the connecting seat, the connecting seat detachably connected to the cylinder the piston rod.

According to some embodiments of the utility model, the connecting seat includes cylinder portion and board, cylinder portion passes first centre bore detachably connect in the piston rod, bellows subassembly cover is located the outside of cylinder portion, bellows subassembly's other end sealing connection in the board.

According to some embodiments of the utility model, bellows subassembly includes first ring flange, second ring flange and locates first ring flange with bellows body between the second ring flange, first ring flange connect in the top of cavity, the second ring flange connect in the board, bellows body cover is located the outside of cylinder portion.

According to some embodiments of the present invention, the valve rod with the connecting seat passes through threaded connection, the connecting seat with the cylinder the piston rod passes through threaded connection.

According to some embodiments of the invention, the valve seat comprises a first seat and a second seat, the first seat having a discharge port and a first runner communicating with the discharge port, the second seat having a feed port and a second runner communicating with the feed port, the first runner communicating with the second runner to form the channel.

According to some embodiments of the invention, the feed inlet is lower than the discharge outlet.

According to some embodiments of the present invention, the second seat further comprises a slag discharge port, and the slag discharge port is communicated with the second flow passage;

the valve further comprises a plug which is detachably connected to the second seat and used for plugging the slag discharge hole.

According to some embodiments of the present invention, the valve further comprises a blocking seat disposed in the passage for contacting with the valve rod assembly to block the passage.

According to some embodiments of the invention, the valve further comprises a seal sealed between the valve stem assembly and the second central bore.

An embodiment in the above-mentioned utility model has following advantage or beneficial effect:

because the one end sealing connection of bellows subassembly is in the cap of cavity, the other end sealing connection of bellows subassembly is in valve rod assembly, when the piston rod reciprocating motion of cylinder, bellows subassembly can be along with valve rod assembly's reciprocating motion and extend or shorten, at the in-process of extension or shortening, it is not communicating with each other to keep inside pipe cavity and outside pipe cavity all the time, and then guarantee that the gas in the cylinder can not get into in the cavity, finally avoided in the air gets into the material of carrying in the disk seat along the second centre bore, cause to have the bubble in the material, influence the quality of material.

In addition, because the valve rod is detachably connected to the connecting seat, the connecting seat makes detachably connected to the cover of cavity, and the both ends of bellows subassembly detachably connect in the cover and the connecting seat of cavity respectively, when the valve damages out of work, only need change certain damaged part alone, and need not to change holistic valve, practiced thrift the cost.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a perspective view of a valve shown according to an exemplary embodiment.

FIG. 2 is a front view of a valve shown according to an exemplary embodiment.

Fig. 3 is a rear view of a valve shown according to an exemplary embodiment.

FIG. 4 is a cross-sectional view of a valve shown according to an exemplary embodiment.

Wherein the reference numerals are as follows:

10. cavity body

101. Cover part

102. Bottom part

110. Chamber

20. Cylinder

30. Valve seat

310. First seat

311. Discharge port

312. First flow channel

320. Second seat

321. Feed inlet

322. Second flow channel

323. Slag discharge port

324. Plug

410. Valve rod

420. Connecting seat

421. Cylindrical part

422. Plate part

50. Corrugated pipe assembly

510. First flange plate

520. Second flange plate

530. Corrugated pipe body

60. Sealing element

70. Blocking seat

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "top", "bottom", and the like, are also intended to have similar meanings. The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," "third," and "fourth," etc. are used merely as labels, and are not limiting as to the number of their objects.

It should be understood that "connected" in this document may be a direct connection of a first element to a second element; at least one component may be further disposed between the first component and the second component, so that the first component and the second component are indirectly connected.

As shown in fig. 1-3, there are perspective, front and rear views of a valve shown according to an exemplary embodiment. In this embodiment, the valve includes a chamber 10, a cylinder 20 and a valve seat 30, the cylinder 20 is installed above the chamber 10 to provide power for the movement of the valve stem 410, and the valve seat 30 is installed below the chamber 10. The valve seat 30 has an inlet 321 and an outlet 311, and the material can enter the valve through the inlet 321 and flow out of the outlet 311.

In some embodiments, the cylinder 20 may be a finished part, and the cylinder 20 includes a piston rod, the reciprocating motion of which causes the valve to close or open.

As shown in fig. 4, fig. 4 is a cross-sectional view of a valve shown according to an exemplary embodiment. In an exemplary embodiment, the chamber body 10 includes a cover part 101 and a bottom part 102, the cover part 101 can be detachably covered on the bottom part 102 through a bolt assembly, and the cover part 101 and the bottom part 102 form a hollow chamber 110. A sealing ring is provided at the junction of the cover 101 and the base 102 to ensure a vacuum state in the chamber 110.

In one embodiment, the cover 101 may be a cylinder block that is removably coupled to the base 102 and forms the cavity 110 described above. The cylinder 20 may be removably attached to the cylinder block by a bolt assembly.

In some embodiments, the chamber 10 may be detachably connected to the valve seat 30 by a bolt assembly.

In some embodiments, the cavity 10 has a first central hole and a second central hole which are oppositely arranged, and the first central hole corresponds to the piston rod of the cylinder 20, so that the piston rod of the cylinder 20 can pass through the first central hole to enter the cavity 110 of the cavity 10. The first central hole and the second central hole may be coaxial, and the diameter of the first central hole and the diameter of the second central hole may be equal or unequal, and may be changed according to specific design requirements, for example, the diameter of the first central hole may depend on the diameter of the piston rod of the cylinder 20, so that the piston rod can smoothly reciprocate; the diameter of the second central hole may be determined by the diameter of the valve stem so that the valve stem can smoothly reciprocate.

With continued reference to fig. 4, the valve stem assembly is connected to the piston rod of the cylinder 20 and is movable between a first position and a second position by the reciprocating motion of the piston rod. In the first position, the valve rod assembly blocks the passage of the valve seat 30 to disconnect the feed port 321 and the discharge port 311; in the second position, the stem assembly unblocks the passageway and the inlet 321 and outlet 311 are in communication for delivering material.

In an exemplary embodiment, the valve stem assembly includes a valve stem 410 and a coupling socket 420, the coupling socket 420 being removably coupled to the piston rod of the cylinder 20, such as by a threaded connection. The valve stem 410 is removably connected to the coupling socket 420, such as by a threaded connection.

In some embodiments, the connection holder 420 includes a cylindrical portion 421 and a plate portion 422, and an axis of the cylindrical portion 421 is perpendicular to the plate portion 422. The cylindrical portion 421 is detachably connected to the piston rod through the first center hole, for example, the cylindrical portion 421 has an external thread portion, the piston rod has an internal thread portion, and the cylindrical portion 421 is threadedly connected to the piston rod. Of course, in other embodiments, the cylindrical portion 421 can also have an internal threaded portion, the piston rod can have an external threaded portion, or other suitable detachable connection means.

In an exemplary embodiment, the bellows assembly 50 includes a first flange 510, a second flange 520, and a bellows body 530 disposed between the first flange 510 and the second flange 520, wherein the bellows body 530 is sealingly coupled at opposite ends to the first flange 510 and the second flange 520, respectively. The first flange 510 is detachably attached to the cover 101 of the chamber 10, for example, by screwing. The second flange 520 is removably attached to the plate portion 422 of the connector block 420, such as by a threaded connection. The bellows body 530 is sleeved outside the cylindrical portion 421 of the connection seat 420, and the cylindrical portion 421 of the connection seat 420 sequentially penetrates through the hole of the second flange 520, the bellows body 530 and the hole of the first flange 510, and is further connected to the piston rod of the cylinder 20. A seal ring is provided at the joint between the first flange 510 and the lid 101 of the chamber 10, and a seal ring is provided at the joint between the second flange 520 and the plate 422 of the coupling socket 420.

By the design, the inner cavity and the outer cavity of the pipe, which are not communicated with each other, are formed inside and outside the bellows assembly 50. The inner cavity of the pipe is a space surrounded by the bellows assembly 50, and the inner cavity of the pipe is communicated with the cylinder 20 through the first central hole, that is, the gas in the cylinder 20 can enter the inner cavity of the pipe. The outer tubular chamber is a space formed outside the bellows assembly 50.

In this embodiment, one end of the bellows assembly 50 is fixedly sealed to the cover 101 of the cavity 10, and the other end of the bellows assembly 50 is fixedly sealed to the valve rod assembly, when the piston rod of the air cylinder 20 moves in a reciprocating manner, the bellows assembly 50 can extend or shorten along with the reciprocating movement of the valve rod assembly, and during the extending or shortening process, the inner cavity of the tube and the outer cavity of the tube are always kept not communicated with each other, so that it is ensured that the air in the air cylinder 20 does not enter the cavity 110 in the cavity 10, and finally, it is avoided that the air enters the material conveyed in the valve seat 30 along the second central hole, and the air bubbles exist in the material, which affects the quality of the material.

With continued reference to fig. 4, in an exemplary embodiment, the valve seat 30 includes a first seat 310 and a second seat 320, the first seat 310 has a discharge port 311 and a first flow passage 312 communicating with the discharge port 311, and the second seat 320 has a feed port 321 and a second flow passage 322 communicating with the feed port 321.

In some embodiments, the first flow passage 312 communicates with the second central hole of the chamber 10 and the second flow passage 322 of the second seat 320, respectively. The first flow passage 312 communicates with the second flow passage 322 to form a passage. The first flow passage 312 corresponds to the second central bore such that the valve stem 410 can be plugged into the passage through the second central bore.

In some embodiments, a sealing member 60 is disposed between the valve stem 410 and the second central hole of the chamber body 10 to prevent the material in the passage from entering the chamber body 10. When the material to be conveyed is corrosive, it is prevented from entering the chamber 10 to damage the bellows assembly 50 and the like. In one embodiment, the seal between the valve stem 410 and the second central bore of the chamber body 10 is a V-ring seal.

In some embodiments, a sealing member 60 is also disposed between the valve stem 410 and the sidewall of the second flow channel 322 of the first seat 310, and the function of the sealing member is the same as that of the V-shaped sealing ring, which is not described herein again.

In some embodiments, feed port 321 is lower than discharge port 311. In the process of conveying the material from the feeding hole 321 to the discharging hole 311, since the feeding hole 321 and the discharging hole 311 have a height difference, the impurities in the material can be precipitated due to the gravity action and cannot flow out from the discharging hole 311.

In some embodiments, the second seat 320 is further provided with a slag discharge port 323, and the slag discharge port 323 is communicated with the second flow passage 322 of the second seat 320. After the impurities in the material are precipitated, the material can be discharged through a slag discharge port 323. The valve further comprises a plug 324, the plug 324 being detachably connected to the second seat 320, for example by means of bolts, for blocking the above-mentioned slag discharge opening 323.

In some embodiments, the valve further comprises a plug 70, and the plug 70 is disposed in a channel in the valve seat 30 and is used for contacting with the valve stem 410 of the valve stem assembly to disconnect the feed port 321 and the discharge port 311. In one embodiment, the plug 70 is cylindrical and is disposed in the first flow channel 312 of the first seat 310, for example, by a tight fit connection.

To sum up, the utility model discloses an advantage and the beneficial effect of valve lie in:

because the one end sealing connection of bellows subassembly is in the cap of cavity, the other end sealing connection of bellows subassembly is in valve rod assembly, when the piston rod reciprocating motion of cylinder, bellows subassembly can be along with valve rod assembly's reciprocating motion and extend or shorten, at the in-process of extension or shortening, it is not communicating with each other to keep inside pipe cavity and outside pipe cavity all the time, and then guarantee that the gas in the cylinder can not get into in the cavity, finally avoided in the air gets into the material of carrying in the disk seat along the second centre bore, cause to have the bubble in the material, influence the quality of material.

In addition, because the valve rod is detachably connected to the connecting seat, the connecting seat makes detachably connected to the cover of cavity, and the both ends of bellows subassembly detachably connect in the cover and the connecting seat of cavity respectively, when the valve damages out of work, only need change certain damaged part alone, and need not to change holistic valve, practiced thrift the cost.

It should be noted here that the valve shown in the drawings and described in the present specification is only one example of the application of the principles of the present invention. It should be clearly understood by those skilled in the art that the principles of the present invention are not limited to any of the details or any of the components of the apparatus shown in the drawings or described in the specification.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the description. The present invention is capable of other embodiments and of being practiced and carried out in a variety of ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments set forth herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention.

Claims (10)

1. A valve, comprising:

the cavity is provided with a cavity, the cavity is provided with a first central hole and a second central hole which are oppositely arranged, and the first central hole and the second central hole are both communicated with the cavity;

the cylinder is arranged on the cavity, and a piston rod of the cylinder corresponds to the first central hole;

the valve seat is provided with a feeding hole and a discharging hole, the feeding hole is communicated with the discharging hole through a channel, and the second central hole is communicated with the channel;

the valve rod assembly is connected to the piston rod of the air cylinder and can move between a first position and a second position, and in the first position, the valve rod assembly blocks the channel to disconnect the feed port and the discharge port; when the second position is adopted, the feed inlet is communicated with the discharge outlet; and

the corrugated pipe assembly is sleeved outside the valve rod assembly, one end of the corrugated pipe assembly is connected to the air cylinder in a sealing mode, and the other end of the corrugated pipe assembly is connected to the valve rod assembly in a sealing mode, so that a pipe inner cavity and a pipe outer cavity which are not communicated with each other are formed.

2. The valve of claim 1, wherein the valve stem assembly includes a valve stem removably connected to the connecting block and a connecting block removably connected to the piston rod of the cylinder.

3. The valve of claim 2, wherein the connecting seat comprises a cylindrical portion and a plate portion, the cylindrical portion is detachably connected to the piston rod through the first central hole, the bellows assembly is sleeved outside the cylindrical portion, and the other end of the bellows assembly is hermetically connected to the plate portion.

4. The valve of claim 3, wherein the bellows assembly comprises a first flange, a second flange, and a bellows body disposed between the first flange and the second flange, the first flange being coupled to the top of the chamber, the second flange being coupled to the plate, the bellows body being disposed outside the cylindrical portion.

5. The valve of claim 2, wherein the valve stem is threadably connected to the connecting seat, and the connecting seat is threadably connected to the piston rod of the cylinder.

6. A valve according to any one of claims 1 to 5, wherein the valve seat comprises a first seat having a discharge outlet and a first flow passage communicating with the discharge outlet, and a second seat having a feed inlet and a second flow passage communicating with the feed inlet, the first flow passage communicating with the second flow passage to form the passageway.

7. The valve of claim 6, wherein the inlet port is lower than the outlet port.

8. The valve according to claim 7, wherein the second seat is further provided with a slag discharge port, and the slag discharge port is communicated with the second flow passage;

the valve further comprises a plug which is detachably connected to the second seat and used for plugging the slag discharge hole.

9. A valve according to any one of claims 1 to 5 further comprising a plug seat disposed in the passageway for contacting the valve stem assembly to plug the passageway.

10. The valve of any of claims 1 to 5, further comprising a seal sealed between the valve stem assembly and the second central bore.

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