阅读说明：本技术 真空排气阀及包括其的六面顶压机 (Vacuum exhaust valve reaches cubic apparatus press including it ) 是由 陈珣 于 2020-06-22 设计创作，主要内容包括：本发明涉及六面顶压机技术领域,尤其涉及真空排气阀及包括其的六面顶压机,所述真空排气阀包括设有排气孔的排气螺栓,所述排气螺栓的下部螺纹装配在排气孔中、上部伸出所述排气孔并构成抽气接头,所述排气孔内从下向上穿装有阀针,所述阀针包括导杆部和封堵部,所述封堵部的上端与所述排气螺栓的下端面向上挡止配合、下端向下封堵并密封排气孔的小孔径端,所述排气螺栓的下端面上设有横向凹槽,所述排气孔的内壁上设有竖向凹槽,所述横向凹槽和竖向凹槽对应连通从而构成供气体从排气孔向排气孔流动的气道。本发明的真空排气阀的承压能力强,能够适应超高压液压系统的排气要求,同时还便于真空泵对压缸的抽真空,排气效率得到本质提升。(The invention relates to the technical field of cubic presses, in particular to a vacuum exhaust valve and a cubic press comprising the same, wherein the vacuum exhaust valve comprises an exhaust bolt provided with an exhaust hole, the lower part of the exhaust bolt is assembled in the exhaust hole in a threaded manner, the upper part of the exhaust bolt extends out of the exhaust hole to form an air extraction joint, a valve needle penetrates through the exhaust hole from bottom to top, the valve needle comprises a guide rod part and a plugging part, the upper end of the plugging part is in upward blocking fit with the lower end of the exhaust bolt, the lower end of the plugging part is downward plugged to seal the small-hole-diameter end of the exhaust hole, a transverse groove is arranged on the lower end surface of the exhaust bolt, a vertical groove is arranged on the inner wall of the exhaust hole, and the transverse groove and the vertical. The vacuum exhaust valve has strong bearing capacity, can meet the exhaust requirement of an ultrahigh pressure hydraulic system, is convenient for the vacuum pump to vacuumize a pressure cylinder, and essentially improves the exhaust efficiency.)

1. Vacuum discharge valve for install on pressing the jar cylinder body and with the vacuum pump butt joint, its characterized in that: the exhaust valve comprises a valve body provided with an exhaust hole and an exhaust screw provided with an exhaust hole extending in the up-down direction, the lower part of the exhaust bolt is assembled in the exhaust hole in a threaded manner, the upper part of the exhaust bolt extends out of the exhaust hole and forms an exhaust joint for being in butt joint with a vacuum pump, a valve needle penetrates through the exhaust hole from bottom to top, the valve needle comprises a guide rod part positioned in the exhaust hole and a plugging part positioned at the lower end of the guide rod part, the upper end of the plugging part is in upward blocking fit with the lower end of the exhaust bolt, the lower end of the plugging part downwards plugs the small-hole-diameter end of the exhaust hole so as to seal the exhaust hole, a transverse groove is arranged on the lower end face of the exhaust bolt, a vertical groove is arranged on the inner wall of the exhaust hole, the transverse groove and the vertical groove are correspondingly communicated so as to form an air passage for air to flow from the exhaust And pumping the gas in the cylinder out along the air passage, and downwards adjusting the exhaust bolt to enable the plugging part to downwards compress and plug the small-bore end of the exhaust hole so as to seal the exhaust hole.

2. The vacuum exhaust valve according to claim 1 wherein: the horizontal grooves and the vertical grooves are at least provided with at least two grooves which are communicated in a one-to-one correspondence manner.

3. The vacuum exhaust valve according to claim 1 wherein: the guide rod part is in clearance fit with the air exhaust hole, the clearance is larger than zero, and the clearance between the guide rod part and the air exhaust hole forms the vertical groove.

4. The vacuum exhaust valve according to claim 1, 2 or 3, wherein: the blocking part is of a conical structure with a large upper part and a small lower part, and the upper end face of the conical structure is upwards matched with the lower end face of the exhaust bolt in a blocking manner.

5. The vacuum exhaust valve according to claim 4, wherein: the position of the lower part of the exhaust bolt corresponding to the large-aperture end of the exhaust hole is provided with a sealing groove which is arranged around the circumference of the exhaust bolt, and a sealing ring is arranged in the sealing groove.

6. The vacuum exhaust valve according to claim 5, wherein: and a screwing part for screwing the exhaust bolt is arranged at the position, close to the exhaust hole, of the upper part of the exhaust bolt, and the screwing part is in a regular hexagonal prism shape extending along the vertical direction.

7. Cubic press, including six pressure jar, the pressure jar includes the cylinder body be equipped with vacuum exhaust valve, its characterized in that on the cylinder body: the vacuum exhaust valve according to any one of claims 1 to 6.

Technical Field

The invention relates to the technical field of cubic presses, in particular to a vacuum exhaust valve and a cubic press comprising the same.

Background

The cubic press is mainly used in the field of diamond synthesis in China, the cubic press is provided with 6 press cylinders, the press cylinders are hydraulic cylinders, the oil pressure can reach more than 100Mpa, and the pressure sources of the cubic press are in six directions, so that after the cubic press is newly assembled and maintained, more gas can be reserved in the horizontal and upward press cylinders, and the gas in the press cylinders needs to be exhausted in order to ensure the normal operation of the press cylinders.

The common exhaust device is generally an exhaust screw which is arranged in an exhaust hole preset on an oil supply pipe joint of a pressure cylinder, the exhaust hole is a step-shaped round hole with the inner diameter increasing from inside to outside in order to facilitate processing and installation of the exhaust device, namely, the small-bore end of the exhaust hole is inward and the large-bore end of the exhaust hole is outward, the exhaust devices exhaust gas by relying on the principle that the internal pressure of the pressure cylinder is larger than the external air pressure, because a pressure cylinder working air chamber of the cubic press is higher than an oil pipe joint, residual gas is difficult to exhaust, the positioning precision of the pressure cylinder is inaccurate, even the synthetic blasting phenomenon can be caused, huge loss is caused, based on the harsh requirement of gas residue, after the pressure cylinder exhausts gas by adopting the common method, the pressure cylinder also needs to be operated at overpressure for a long time to enable oil-wrapped gas to flow so as to further exhaust the gas, inconvenient and low in working efficiency.

Therefore, it is necessary to develop a new exhaust device suitable for a cylinder of a cubic press.

Disclosure of Invention

The invention provides a vacuum exhaust valve, which aims to solve the problem of exhaust of a cubic press.

The invention discloses a vacuum exhaust valve for a pressure cylinder of a cubic press, which adopts the following technical scheme:

the vacuum exhaust valve is used for being installed on a cylinder body of a pressure cylinder and butted with a vacuum pump, and comprises a valve body provided with an exhaust hole and an exhaust screw provided with an exhaust hole extending along the vertical direction, the lower part of the exhaust bolt is assembled in the exhaust hole in a threaded manner, the upper part of the exhaust bolt extends out of the exhaust hole and forms an exhaust joint for butting with the vacuum pump, a valve needle penetrates through the exhaust hole from bottom to top, the valve needle comprises a guide rod part positioned in the exhaust hole and a plugging part positioned at the lower end of the guide rod part, the upper end of the plugging part and the lower end of the exhaust bolt face up to be in plugging fit, the lower end downwards plugs the small-hole-diameter end of the exhaust hole so as to seal the exhaust hole, a transverse groove is arranged on the lower end face of the exhaust bolt, a vertical groove is arranged on the inner wall of the exhaust hole, and adjusting the exhaust bolt upwards to enable the plugging part to release the sealing of the small-bore end of the exhaust hole so as to draw the gas in the pressure cylinder out along the air passage through a vacuum pump, and adjusting the exhaust bolt downwards to enable the plugging part to compress downwards and plug the small-bore end of the exhaust hole so as to seal the exhaust hole.

The horizontal grooves and the vertical grooves are at least provided with at least two grooves which are communicated in a one-to-one correspondence manner.

Or the guide rod part is in clearance fit with the air suction hole, the clearance is larger than zero, and the clearance between the guide rod part and the air suction hole forms the vertical groove.

The blocking part is of a conical structure with a large upper part and a small lower part, and the upper end face of the conical structure is upwards matched with the lower end face of the exhaust bolt in a blocking manner.

The position of the lower part of the exhaust bolt corresponding to the large-aperture end of the exhaust hole is provided with a sealing groove which is arranged around the circumference of the exhaust bolt, and a sealing ring is arranged in the sealing groove.

And a screwing part for screwing the exhaust bolt is arranged at the position, close to the exhaust hole, of the upper part of the exhaust bolt, and the screwing part is in a regular hexagonal prism shape extending along the vertical direction.

The cubic press adopts the following technical scheme:

the cubic apparatus press comprises six press cylinders, each press cylinder comprises a cylinder body, a vacuum exhaust valve is arranged on the cylinder body, the vacuum exhaust valve comprises a valve body provided with an exhaust hole and an exhaust bolt provided with an exhaust hole extending along the vertical direction, the lower part of the exhaust bolt is assembled in the exhaust hole in a threaded manner, the upper part of the exhaust bolt extends out of the exhaust hole and forms an exhaust joint for being in butt joint with a vacuum pump, a valve needle penetrates through the exhaust hole from bottom to top, the valve needle comprises a guide rod part positioned in the exhaust hole and a plugging part positioned at the lower end of the guide rod part, the upper end of the plugging part is in upward plugging fit with the lower end of the exhaust bolt, the lower end of the plugging part is downward plugged at the small-bore end of the exhaust hole so as to seal the exhaust hole, a transverse groove is, the transverse grooves and the vertical grooves are correspondingly communicated to form an air passage for air to flow from the exhaust hole to the exhaust hole, the exhaust bolt is adjusted upwards to enable the plugging portion to remove the sealing of the small-bore end of the exhaust hole, so that air in the pressure cylinder is pumped out along the air passage through the vacuum pump, and the exhaust bolt is adjusted downwards to enable the plugging portion to compress downwards and plug the small-bore end of the exhaust hole, so that the exhaust hole is sealed.

The horizontal grooves and the vertical grooves are at least provided with at least two grooves which are communicated in a one-to-one correspondence manner.

Or the guide rod part is in clearance fit with the air suction hole, the clearance is larger than zero, and the clearance between the guide rod part and the air suction hole forms the vertical groove.

The blocking part is of a conical structure with a large upper part and a small lower part, and the upper end face of the conical structure is upwards matched with the lower end face of the exhaust bolt in a blocking manner.

The position of the lower part of the exhaust bolt corresponding to the large-aperture end of the exhaust hole is provided with a sealing groove which is arranged around the circumference of the exhaust bolt, and a sealing ring is arranged in the sealing groove.

And a screwing part for screwing the exhaust bolt is arranged at the position, close to the exhaust hole, of the upper part of the exhaust bolt, and the screwing part is in a regular hexagonal prism shape extending along the vertical direction.

The invention has the beneficial effects that: the upper end of the plugging part of the vacuum exhaust valve is upwards matched with the lower end of the exhaust bolt in a blocking way, the guide rod part is matched with the exhaust hole to position the plugging part, so that the plugging part is screwed down to realize high-pressure plugging and sealing of the small-bore end of the exhaust hole, the sealing is not easy to loosen, the sealing can be prevented from being released by external accidental contact, the sealing performance is excellent, when the air needs to be exhausted, the sealing of the plugging part on the small-bore end of the exhaust hole can be released by upwards adjusting the exhaust bolt, the air in the pressure cylinder can be pumped away by the adaptive vacuum pump after sequentially passing through the exhaust hole, the air in the pressure cylinder and the exhaust hole, the air is smoothly exhausted, the plugging part can be enabled to reseal the small-bore end of the exhaust hole by downwards adjusting the exhaust bolt after the air is exhausted, and then high-pressure oil can be filled into the pressure cylinder and the, can adapt to high pressure or superhigh pressure hydraulic system's exhaust, sealed requirement, the evacuation of the vacuum pump to pressing the jar of still being convenient for simultaneously, carry out simple operation alright quick realization good high pressure shutoff after the evacuation and seal, whole exhaust, sealed operation is very simple, convenient, and exhaust efficiency obtains essence and promotes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and 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 creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a vacuum exhaust valve according to the present invention;

FIG. 2 is a schematic view of the construction of the vent bolt;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 1;

FIG. 4 is a schematic view of the corresponding pumping state of FIG. 3;

in the figure: 1. the exhaust valve comprises a valve body, 11, an exhaust duct, 2, a small-bore end, 21, a large-bore end, 3, an exhaust joint, 31, a screwing part, 32, an exhaust hole, 33, a transverse groove, 34, a sealing groove, 35, a threaded part, 36, an exhaust gap, 4, a sealing ring, 5, a guide rod part, 51, a plugging part, 6 and an exhaust bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the vacuum exhaust valve of the present invention, as shown in fig. 1 to 4, is a vacuum exhaust valve for sealing and installing on a cylinder body of a pressure cylinder and butting against a vacuum pump, and can also be installed on an oil supply pipeline of the pressure cylinder, and comprises a valve body provided with an exhaust hole and an exhaust bolt 6 provided with an exhaust hole 32 extending in the up-down direction, the valve body is further provided with an exhaust duct 11 for communicating an inner cavity of the pressure cylinder with the exhaust hole, the exhaust bolt 6 is a columnar rotator, the exhaust hole 32 is coaxially arranged with the exhaust bolt 6, the lower part of the exhaust bolt 6 is threadedly assembled in the exhaust hole, the part of the upper thread of the exhaust bolt 6 is a threaded part 35, the upper part of the exhaust bolt 6 extends out of the exhaust hole and forms an exhaust joint 3 for butting against the vacuum pump, a valve needle is penetrated from bottom to top in the exhaust hole 32, the valve needle comprises a, the upper end of the plugging part 51 is in upward blocking fit with the lower end of the exhaust bolt 6, the lower end of the plugging part plugs the small-bore end 2 of the exhaust hole downwards so as to seal the exhaust hole, the lower end face of the exhaust bolt 6 is provided with a transverse groove 33, the inner wall of the exhaust hole 32 is provided with a vertical groove, the transverse groove 33 and the vertical groove are correspondingly communicated so as to form an air passage for air to flow from the exhaust hole to the exhaust hole 32, the exhaust bolt 6 is adjusted upwards to enable the plugging part 51 to release the sealing of the small-bore end 2 of the exhaust hole so as to enable the air in the pressure cylinder to be pumped out along the air passage through the vacuum pump, and the exhaust bolt 6 is adjusted downwards to enable the plugging part.

In this embodiment, the guide rod portion 5 is in clearance fit with the air exhaust hole 32, the clearance is larger than zero, the clearance between the guide rod portion 5 and the air exhaust hole 32, i.e. the air exhaust clearance 36, forms the vertical groove, the two horizontal grooves 33 are symmetrically arranged, at this time, the guide rod portion 5 and the air exhaust hole 32 can rotate relatively, so as to facilitate the contact and separation of the plugging portion 51 and the small-bore end 2 of the air exhaust hole, and avoid the influence of the excessive abrasion of the contact positions of the plugging portion 51 and the small-bore end 2 of the air exhaust hole on the sealing performance, meanwhile, the clearance fit between the guide rod portion 5 and the air exhaust hole 32 can also enable the plugging portion 51 and the guide rod portion 5 to have a corresponding adjusting space when the small-bore end 2 of the air exhaust hole is not corresponding to the small-bore end 2 of the air exhaust hole, and avoid the sealing failure due to the non-correspondence between the plugging portion, the plugging part 51 can not tightly press the small aperture end 2, so that the gas can push the plugging part 51 away along the gap or the top and is pumped out through the exhaust hole, the air passage and the pumping hole 32 in sequence; in other models of this embodiment, a groove extending in the up-down direction may be further provided on the inner wall of the air exhaust hole 32, so that the groove and the exhaust gap form a vertical groove together.

In other embodiments, the number of the transverse grooves 33 may be one, three or more; the guide rod part 5 can also be in interference fit with the air suction hole 32 so that the guide rod part 5 and the exhaust bolt 6 move synchronously; in order to ensure the smooth effect of exhaust, the horizontal grooves 33 and the vertical grooves may be at least two and communicated in one-to-one correspondence.

In the present embodiment, the closing portion 51 has a conical structure with a large top and a small bottom, the upper end surface of the conical structure and the lower end surface of the exhaust bolt 6 are engaged in an upward retaining manner, and the valve needle is an integrally molded member.

In other embodiments, the blocking portion 51 may also be a combination of a cylinder and a cone, wherein the cylinder is at the upper part, the cone is at the lower part, and the small end of the cone is downward.

In order to prevent gas from flowing from the gap between the exhaust bolt 6 and the exhaust hole and reduce the air tightness, a sealing groove 34 is arranged at the position of the lower part of the exhaust bolt 6 corresponding to the large-aperture end 21 of the exhaust hole and surrounds the lower part of the exhaust bolt, a sealing ring 4 is arranged in the sealing groove 34, the number of the grooves and the number of the sealing rings 4 can be one pair, two pairs or even multiple pairs, and only one pair is arranged in the embodiment.

In order to facilitate screwing of the exhaust bolt 6, a screwing portion 31 for screwing the exhaust bolt 6 is provided at a position on the upper portion of the exhaust bolt 6 near the exhaust hole, the screwing portion 31 is in a regular hexagonal prism shape extending in the vertical direction, and the screwing portion 31 and the exhaust bolt 6 are integrally formed.

In other embodiments, the screw part 31 may have other shapes such as a square prism.

When the vacuum exhaust valve is installed and used specifically, the vacuum exhaust valve is screwed in the exhaust hole, the blocking part 51 is in a non-sealing state at the moment and all valves communicated with the inner cavity of the pressure cylinder are closed, then the exhaust connector 3 is correspondingly connected with the exhaust opening of the vacuum pump, after the vacuum pump is started, the gas in the inner cavity of the pressure cylinder, the auxiliary pipelines and the pore channels is continuously pumped away by the vacuum pump until all the gas in the pressure cylinder is pumped out, then the exhaust bolt 6 is screwed to enable the blocking part 51 to downwards block the small-pore-diameter end 2 of the sealed exhaust hole, at the moment, the pressure cylinder is in a vacuum state, and oil can be injected after the vacuum pump is closed next step, so that the gas.

The upper end of the plugging part 51 of the vacuum exhaust valve of the invention is upwards blocked and matched with the lower end of the exhaust bolt 6, the guide rod part 5 is matched with the exhaust hole 32 to position the plugging part 51, so that the downward tightening of the plugging part 51 can realize the high-pressure plugging and sealing of the small-bore end 2 of the exhaust hole, the sealing is not easy to loosen, the sealing can be prevented from being released by external accidental touch, the sealing performance is excellent, when the air is required to be exhausted, the upward adjustment of the exhaust bolt 6 can release or loosen the sealing of the plugging part 51 on the small-bore end 2 of the exhaust hole, the air in the pressure cylinder can be pumped away by the adaptive vacuum pump after passing through the exhaust hole, the air passage and the exhaust hole 32 in sequence, the air is smoothly exhausted, the adjustment of the exhaust bolt 6 after the air is exhausted is finished can enable the plugging part 51 to reseal the small-bore end 2 of the exhaust hole, and then the pressure cylinder can be filled, impact resistance is good, can adapt to high pressure or superhigh pressure hydraulic system's exhaust, sealed requirement, the evacuation of the vacuum pump to pressing the jar of still being convenient for simultaneously, carries out simple operation alright quick realization good high pressure shutoff after the evacuation and seals, whole exhaust, sealed operation is very simple, convenient, exhaust efficiency obtains essence and promotes.

Cubic press, including six pressure jar, the pressure jar includes the cylinder body be equipped with vacuum exhaust valve on the cylinder body, cubic press and pressure jar are prior art except that other structures of vacuum exhaust valve, and vacuum exhaust valve as above vacuum exhaust valve, so no longer give unnecessary details.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.