CN213176269U - Vacuum exhaust mechanism and press cylinder and cubic press comprising same - Google Patents
Vacuum exhaust mechanism and press cylinder and cubic press comprising same Download PDFInfo
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- CN213176269U CN213176269U CN202021166161.5U CN202021166161U CN213176269U CN 213176269 U CN213176269 U CN 213176269U CN 202021166161 U CN202021166161 U CN 202021166161U CN 213176269 U CN213176269 U CN 213176269U
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Abstract
The utility model relates to the technical field of cubic presses, in particular to a vacuum exhaust mechanism, a pressure cylinder comprising the vacuum exhaust mechanism and a cubic press, the vacuum exhaust mechanism comprises an exhaust duct, the end part of the exhaust duct forms an air outlet, an exhaust valve is arranged in the air outlet, the exhaust valve comprises a valve body, the lower end of the valve body is provided with a blind hole extending upwards, a valve needle penetrates through the blind hole, the valve needle comprises a cylindrical part positioned in the blind hole and a conical part which is positioned at the lower end of the cylindrical part and has a big top and a small bottom, the diameter of the cylindrical part is smaller than that of the blind hole so as to form an adjusting clearance, the upper end of the conical part is matched with the lower end of the valve body in an upward blocking way, and the lower end of the conical part seals the small end of the air outlet hole in a blocking way, and the wall of the air outlet hole corresponding to the conical part is provided with an air vent communicated with the outside, and the air vent is provided with an air exhaust joint. The utility model discloses can guarantee sealed effect, improve gaseous clean degree of discharging, can not cause the damage to the structure of venthole.
Description
Technical Field
The utility model relates to a cubic apparatus press technical field especially relates to a vacuum exhaust mechanism and press jar, cubic apparatus press including it.
Background
In the field of diamond synthesis, a cubic press is a main synthesis device and is used for providing ultrahigh pressure to simulate an earth crust pressure environment, the cubic press is provided with 6 press cylinders, and the primary pressurization can reach 8 GPa. Cubic press is in the level and can remain more gas with ascending pressure jar after new assembly and maintenance, in order to ensure the normal work of pressure jar under the superhigh pressure operating mode, need discharge the gas in the pressure jar.
The common exhaust device is generally an exhaust screw, the exhaust screw is installed in an exhaust hole preset on a cylinder body of a pressure cylinder, for example, an anti-creeping dustproof stroke control sensor oil cylinder disclosed in chinese patent document No. CN207701515U, the oil cylinder includes an anti-creeping mechanism, the anti-creeping mechanism includes an exhaust pipe and an exhaust plug, an air outlet of the exhaust pipe is connected with the exhaust plug through a screw thread, a second exhaust pipe is arranged in the exhaust plug, the exhaust plug is unscrewed during exhaust, and gas in the cylinder is exhausted from the exhaust pipe and the second exhaust pipe. This anti-climbing mechanism is actually exhaust mechanism, its gas outlet is actually the shoulder hole form, when using, because the machining precision problem of hole and core vent, often can lead to gas vent and core vent can not strict coaxial corresponding, form the gap and cause sealed not tight, and in order to reach sealed effect during the use, usually can excessively tighten the core vent, make the core vent and the contact site of gas vent take place irreversible deformation and compensate the gap, finally reach sealed requirement, but this kind of operation can give the cylinder body, the gas vent leads to the fact permanent damage, to the superhigh pressure operating mode of six-side top press's jar, can not guarantee sealed effect, the structural strength of cylinder body also can receive the influence.
Therefore, it is necessary to develop a new exhaust mechanism suitable for a cylinder of a cubic press.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vacuum exhaust mechanism to solve the problem that sealed effect can't be guaranteed to current exhaust technique when using on the jar of pressing on cubic press. Simultaneously, the press cylinder and the cubic press comprising the vacuum exhaust mechanism are also provided.
The utility model discloses a vacuum exhaust mechanism adopts following technical scheme:
a vacuum exhaust mechanism is used for pressing a cylinder and is in butt joint with a vacuum pump, and comprises an exhaust duct arranged in a cylinder body of the pressing cylinder, wherein one end of the exhaust duct is communicated with an inner cavity of the pressing cylinder, the other end of the exhaust duct is communicated with the outside upwards to form an air outlet hole, the air outlet hole is in a stepped hole shape with a large upper part and a small lower part, an exhaust valve is arranged in the air outlet hole and comprises a valve body which is arranged in the large end of the air outlet in a penetrating mode through threads, an upwards extending blind hole is arranged at the center of the lower end of the valve body, a valve needle is arranged in the blind hole in a penetrating mode from bottom to top, the valve needle comprises a cylindrical part and a conical part, the cylindrical part is located in the blind hole and the conical part is located at the lower end of the cylindrical part and is located at the large lower part, the diameter of the cylindrical part is smaller than, The lower end downwards plugs the small end of the air outlet hole so as to seal the air outlet hole, a vent hole communicated with the outside is arranged on the hole wall of the air outlet hole corresponding to the conical part, an air suction joint used for being in butt joint with a vacuum pump is arranged at the end part of the vent hole communicated with the outside, and the valve body is adjusted upwards to enable the conical part to remove the sealing of the small end of the air outlet hole, so that the air flows to the exhaust duct, the air outlet hole and the vent hole in sequence and is sucked out.
The exhaust valve is provided with a sealing groove arranged around the circumference of the exhaust valve at the position corresponding to the upper end of the air outlet hole, and a sealing ring is arranged in the sealing groove.
The upper end of the valve body extends upwards out of the air outlet hole and is provided with a screwing part for screwing the valve body.
The screwing part is in a regular hexagonal prism shape with the height extending along the up-down direction.
The utility model discloses a jar is pressed adopts following technical scheme:
a pressure cylinder comprises a cylinder body and a vacuum exhaust mechanism arranged on the cylinder body, wherein the vacuum exhaust mechanism comprises an exhaust duct arranged in the cylinder body, one end of the exhaust duct is communicated with an inner cavity of the pressure cylinder, the other end of the exhaust duct is communicated with the outside upwards to form an exhaust hole, the exhaust hole is in a stepped hole shape with a large upper part and a small lower part, an exhaust valve is arranged in the exhaust hole and comprises a valve body which is arranged in the large end of the exhaust hole in a penetrating manner through threads, an upwards extending blind hole is arranged at the central position of the lower end of the valve body, a valve needle is arranged in the blind hole in a penetrating manner from bottom to top, the valve needle comprises a cylindrical part arranged in the blind hole and a conical part arranged at the lower end of the cylindrical part and a large lower part, the diameter of the cylindrical part is smaller than that of the blind hole, and a gap, the upper end of the conical part is matched with the lower end of the valve body in an upward blocking mode, the lower end of the conical part is downwards blocked and matched with the small end of the air outlet hole, so that the air outlet hole is sealed, an air vent communicated with the outside is formed in the hole wall, corresponding to the conical part, of the air outlet hole, the end portion, communicated with the outside, of the air vent is provided with an air suction joint used for vacuum air suction, and the valve body is adjusted upwards to enable the conical part to remove the blocking of the small end of the air outlet hole, so that air flows to the exhaust duct, the air outlet hole and.
The exhaust valve is provided with a sealing groove arranged around the circumference of the exhaust valve at the position corresponding to the upper end of the air outlet hole, and a sealing ring is arranged in the sealing groove.
The upper end of the valve body extends upwards out of the air outlet hole and is provided with a screwing part for screwing the valve body.
The screwing part is in a regular hexagonal prism shape with the height extending along the up-down direction.
The utility model discloses a cubic apparatus press adopts following technical scheme:
a cubic apparatus press comprises six press cylinders, each press cylinder comprises a cylinder body and a vacuum exhaust mechanism arranged on the cylinder body, each vacuum exhaust mechanism comprises an exhaust duct arranged in the cylinder body, one end of each exhaust duct is communicated with an inner cavity of the press cylinder, the other end of each exhaust duct is communicated with the outside upwards to form an air outlet, each air outlet is in a stepped hole shape with a large upper part and a small lower part, an exhaust valve is arranged in each air outlet, each exhaust valve comprises a valve body which is arranged in the large end of each air outlet in a penetrating mode through threads, an upwards extending blind hole is arranged at the center of the lower end of the valve body, a valve needle is arranged in each blind hole in a penetrating mode from bottom to top, each valve needle comprises a cylindrical part and a conical part, the cylindrical part is located in each blind hole, the conical part is located at the lower end of the cylindrical part and is large upper part and small lower part, the diameter, the upper end of the conical part is matched with the lower end of the valve body in an upward blocking mode, the lower end of the conical part is downwards blocked and matched with the small end of the air outlet hole, so that the air outlet hole is sealed, an air vent communicated with the outside is formed in the hole wall, corresponding to the conical part, of the air outlet hole, the end portion, communicated with the outside, of the air vent is provided with an air suction joint used for vacuum air suction, and the valve body is adjusted upwards to enable the conical part to remove the blocking of the small end of the air outlet hole, so that air flows to the exhaust duct, the air outlet hole and.
The exhaust valve is provided with a sealing groove arranged around the circumference of the exhaust valve at the position corresponding to the upper end of the air outlet hole, and a sealing ring is arranged in the sealing groove.
The upper end of the valve body extends upwards out of the air outlet hole and is provided with a screwing part for screwing the valve body.
The screwing part is in a regular hexagonal prism shape with the height extending along the up-down direction.
The utility model has the advantages that: the utility model discloses a diameter of cylinder portion of needle is less than the diameter of the blind hole of valve body among the vacuum exhaust mechanism, therefore the clearance between the two can constitute the adjustment clearance that is used for cylinder portion to adjust the position in radial direction, when the venthole that actually processes because the axis of its main aspects of machining error and tip is not located a straight line, cylinder portion can carry out the position adjustment in radial direction in adjusting the clearance, thereby make cone portion keep with the tip coaxial line of venthole, thereby reach the purpose that cone portion agrees with the tip of venthole strictly, and then can guarantee sealed effect, and can not cause deformation damage to the structure of venthole, the bulk strength of cylinder body has been ensured; the air extraction joint can be in butt joint with a vacuum pump to realize vacuum exhaust, so that the exhaust degree of gas is improved; in addition, the clearance fit of the cylindrical part and the blind hole can also enable the cylindrical part to rotate in the blind hole, so that the contact, the looseness or the separation of the conical part and the small end of the air outlet hole are facilitated, and the influence on the sealing performance caused by the excessive abrasion of the contact position of the conical part and the small end of the air outlet hole is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view (sealing state) of an embodiment of a vacuum exhaust mechanism according to the present invention;
fig. 2 is a schematic structural view of an exhaust valve (a valve needle is installed) according to the present invention;
FIG. 3 is an enlarged schematic view of a portion A of FIG. 1;
FIG. 4 is a schematic view of the exhaust state corresponding to FIG. 3;
in the figure: 1. the air exhaust valve comprises a cylinder body, 11, an air exhaust channel, 2, an air outlet, 21, an air vent, 3, an exhaust valve, 31, a valve body, 32, a blind hole, 33, a sealing groove, 34, an adjusting gap, 35, a screwing part, 4, a sealing ring, 5, a cylindrical part, 51, a conical part, 6 and an air exhaust joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the vacuum exhaust mechanism of the utility model, as shown in fig. 1 to fig. 4, a vacuum exhaust mechanism for pressing cylinder and butt joint with vacuum pump, comprising an exhaust duct 11 arranged in the cylinder body 1 of the pressing cylinder, one end of the exhaust duct 11 is communicated with the inner cavity of the pressing cylinder, the other end is upward communicated with the outside and forms an air outlet 2, the air outlet 2 is in the shape of a ladder hole with big top and small bottom, an exhaust valve 3 is arranged in the air outlet 2, the exhaust valve 3 comprises a valve body 31 threaded in the big end of the air outlet, a blind hole 32 extending upward is arranged at the central position of the lower end of the valve body 31, a valve needle is arranged in the blind hole 32 from bottom to top, the valve needle comprises a cylindrical part 5 positioned in the blind hole 32 and a conical part 51 positioned at the lower end of the cylindrical part 5 and big top and small bottom, the diameter of the cylindrical part 5 is smaller than the diameter of the blind hole 32, thereby the, the upper end of the conical part 51 is matched with the lower end of the valve body 31 in a blocking mode, the lower end of the conical part is downward used for blocking the small end of the air outlet hole 2 so as to seal the air outlet hole 2, a vent hole 21 communicated with the outside is formed in the hole wall, corresponding to the conical part 51, of the air outlet hole 2, an air suction joint 6 convenient for vacuum air suction is arranged at the end part, communicated with the outside, of the vent hole 21, the air suction joint 6 is connected with a vacuum pump, and the valve body 31 is adjusted upwards to enable the conical part 51 to remove the blocking of the small end of the air outlet hole 2, so that air flows and is discharged.
In order to ensure the gas discharge effect, a sealing groove 33 which is arranged around the circumference of the exhaust valve 3 is arranged at the position, corresponding to the upper end of the gas outlet hole 2, of the exhaust valve 3, a sealing ring 4 is arranged in the sealing groove 33, in order to meet the sealing requirement of the sealing ring 4, the diameter of the upper end of the gas outlet hole 2 is slightly enlarged, the part is not provided with threads, and the enlarged part, corresponding to the gas outlet hole 2, of the exhaust valve 3 is also synchronously enlarged.
In order to facilitate screwing of the valve body 31, the upper end of the valve body 31 protrudes upward out of the air outlet 2 and is provided with a screwing portion 35 for screwing the valve body 31, the screwing portion 35 is in a regular hexagonal prism shape extending in the vertical direction, and the screwing portion 35 is integrally formed with the valve body 31.
In other embodiments, the screw part 35 may have other shapes such as a regular quadrangular prism; the screw part 35 may be a polygonal counter bore disposed on the upper end surface of the valve body 31, and the upper end of the valve body 31 may not extend out of the air outlet 2.
In other embodiments, the conical portion 51 may also be a truncated cone structure with a large top and a small bottom, and the small end of the truncated cone structure is based on the small end capable of being inserted into the air outlet 2.
When the gas valve is installed and used specifically, the exhaust valve 3 is screwed in the gas outlet hole 2, at this time, the conical part 51 is in a non-sealing state and all valves communicated with the inner cavity of the pressure cylinder are closed, then the gas extraction joint 6 is correspondingly connected with the extraction opening of the vacuum pump, after the vacuum pump is started, the gas in the inner cavity of the pressure cylinder, the auxiliary pipeline and the exhaust duct 11 is continuously extracted by the vacuum pump until the gas in the pressure cylinder is completely extracted, in the process, the gas can push away the valve needle to be extracted when the gas quantity is large, when the gas quantity is small, the conical part 51 of the valve needle falls on the small end of the gas outlet hole 2 but is not compressed, and still has a small gap through which the gas can pass, therefore, when the small end of the gas outlet hole 2 is not compressed by the valve needle, the extraction of the gas is not affected, after the extraction of the gas is finished, the valve body 31 is, the cylinder is in a vacuum state at the moment, oil can be injected after the vacuum pump is closed on the next step, and the gas in the cylinder is finally completely discharged, so that the working requirement of the ultrahigh pressure cylinder can be met, the cylinder is prevented from creeping, and the cylinder is accurately positioned.
The utility model discloses a diameter of 5 cylindrical portions of needle is less than the diameter of blind hole 32 of valve body 31 among the vacuum exhaust mechanism, therefore clearance between the two can constitute the adjustment clearance 34 that is used for cylindrical portion 5 to adjust the position in the radial direction, when the venthole 2 that actually processes out is because its main aspects of machining error and the axis of tip do not lie in a straight line, cylindrical portion 5 can carry out the position adjustment in the radial direction in adjusting clearance 34, thereby make circular cone portion 51 keep the tip coaxial line with venthole 2, thereby reach the purpose that circular cone portion 51 strictly agrees with the tip of venthole 2, and then can guarantee sealed effect, and can not cause deformation damage to the structure of venthole 2, the bulk strength of cylinder body 1 has been guaranteed; the air extraction joint 6 can be butted with a vacuum pump to realize vacuum exhaust, so that the exhaust degree of gas is improved; in addition, the clearance fit between the cylindrical portion 5 and the blind hole 32 also enables the cylindrical portion 5 to rotate in the blind hole 32, thereby facilitating the contact, loosening or separation of the conical portion 51 and the small end of the air outlet 2 and avoiding the influence of excessive abrasion of the contact positions of the two on the sealing performance.
A kind of pressure cylinder, including cylinder body and vacuum exhaust mechanism set up on said cylinder body, the said vacuum exhaust mechanism is as the vacuum exhaust mechanism stated above, therefore will not be repeated.
A cubic press comprises six press cylinders, wherein each press cylinder comprises a cylinder body and a vacuum exhaust mechanism arranged on the cylinder body, and the vacuum exhaust mechanism is the vacuum exhaust mechanism, so that the description is omitted.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a vacuum exhaust mechanism for press the jar and dock with the vacuum pump, including the exhaust duct of setting in the cylinder body of pressing the jar, exhaust duct one end with the inner chamber intercommunication, the other end of pressing the jar upwards communicate the external world and constitute the venthole, the venthole is big-end-up's shoulder hole form, be equipped with discharge valve, its characterized in that in the venthole: the exhaust valve comprises a valve body which is arranged in the large end of the air outlet hole in a penetrating mode through threads, a blind hole extending upwards is formed in the center of the lower end of the valve body, a valve needle penetrates through the blind hole from bottom to top, the valve needle comprises a cylindrical portion located in the blind hole and a conical portion located at the lower end of the cylindrical portion and large in top to bottom, the diameter of the cylindrical portion is smaller than that of the blind hole, so that a gap between the cylindrical portion and the conical portion forms an adjusting gap for adjusting the position of the cylindrical portion in the radial direction, the upper end of the conical portion is matched with the lower end of the valve body in an upward blocking mode, the lower end of the conical portion blocks the small end of the air outlet hole downwards, the air outlet hole is sealed, an air vent communicated with the outside is formed in the hole wall of the air outlet hole corresponding to the conical portion, an air exhaust joint used for being in butt joint with a vacuum pump is arranged at the end portion, the Towards the exhaust duct, the air outlet and the vent hole and is drawn out.
2. A vacuum pumping mechanism as defined in claim 1, wherein: the exhaust valve is provided with a sealing groove arranged around the circumference of the exhaust valve at the position corresponding to the upper end of the air outlet hole, and a sealing ring is arranged in the sealing groove.
3. A vacuum exhaust mechanism according to claim 1 or 2, wherein: the upper end of the valve body extends upwards out of the air outlet hole and is provided with a screwing part for screwing the valve body.
4. A vacuum pumping mechanism as defined in claim 3, wherein: the screwing part is in a regular hexagonal prism shape with the height extending along the up-down direction.
5. A kind of pressure cylinder, including cylinder block and setting up the vacuum exhaust mechanism on the said cylinder block, characterized by that: the vacuum exhaust mechanism according to any one of claims 1 to 4.
6. The utility model provides a cubic apparatus press, includes six pressure jar, the pressure jar includes the cylinder body and sets up vacuum exhaust mechanism on the cylinder body, its characterized in that: the vacuum exhaust mechanism according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021166161.5U CN213176269U (en) | 2020-06-22 | 2020-06-22 | Vacuum exhaust mechanism and press cylinder and cubic press comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021166161.5U CN213176269U (en) | 2020-06-22 | 2020-06-22 | Vacuum exhaust mechanism and press cylinder and cubic press comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213176269U true CN213176269U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021166161.5U Active CN213176269U (en) | 2020-06-22 | 2020-06-22 | Vacuum exhaust mechanism and press cylinder and cubic press comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213176269U (en) |
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2020
- 2020-06-22 CN CN202021166161.5U patent/CN213176269U/en active Active
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