CN216856639U - Large-size pyrophyllite composite block for synthesizing artificial diamond - Google Patents

Abstract

The utility model belongs to the technical field of synthetic diamond production equipment, and provides a large-size pyrophyllite composite block for synthetic artificial diamond, which comprises a dolomite lining, wherein a pyrophyllite block is arranged outside the dolomite lining, a through hole is formed in the center of the pyrophyllite, the pyrophyllite block comprises two end blocks which are identical in structure and are oppositely distributed at two ends of the dolomite lining, the inner wall of each end block is provided with four cylindrical bars which are symmetrically distributed in pairs, the outer wall of the dolomite lining is provided with a cylindrical groove matched with the cylindrical bars, the outer wall of each end block is provided with a peripheral groove, the middle of each peripheral groove is provided with a slope, a middle ring is arranged between the two end blocks, the inner diameter of the middle ring is equal to the outer diameter of the peripheral groove, the two end faces of the middle ring are stepped faces, and the stepped faces are in sealing fit with the groove bottom faces of the peripheral grooves. The diamond synthesizing device has the advantages of reasonable design, simple structure, better sealing performance, convenience for composite forming, contribution to ensuring the quality of the synthesized diamond and suitability for large-scale popularization.

Description

Large-size pyrophyllite composite block for synthesizing artificial diamond

Technical Field

The utility model belongs to the technical field of synthetic diamond production equipment, and relates to a large-size pyrophyllite composite block for synthesizing artificial diamond.

Background

In the industrial production of synthetic diamond, the pressure transmission medium is a key auxiliary accessory material for production. The natural pressure transmission medium pyrophyllite mineral product has unstable quality and components, mainly because the natural pyrophyllite in the mineral has different rock stratum parts and different metamorphic conditions, is greatly influenced by natural factors, and is difficult to realize industrial stable production and use. According to the characteristics of the powder forming process, the pyrophyllite raw stone is crushed and graded into different particle sizes, and then a certain amount of modified materials such as a binder, a curing agent and the like are added to prepare the pyrophyllite powder briquette, so that the uniformity of the pyrophyllite material is greatly improved. Before pressing into a composite block, filling a dolomite heat-insulating liner tube at a position close to a cavity of the high-temperature core column, and pressing the pyrophyllite powder and the dolomite liner tube into an integral composite block through a hydraulic four-column press.

Along with the research of the tonnage increase and the large-scale synthesis cavity of the cubic press, the specification of a matched pressure transmission sealing medium product is gradually increased, but in the cavity increasing process, if the volume of a synthesis cavity is increased by about 50% from the original maximum specification of 84mmX84mm, the requirement on the sealing effect is more strict, and in the compression molding process of a pyrophyllite composite block, because crushed pyrophyllite powder is used, the difference between the granularity distribution and the morphology regularity is larger, segregation can be caused by adopting vibration blanking, the control on the distribution uniformity is difficult in the automatic production process, particularly after the pyrophyllite specification is increased, the distribution uniformity of coarse and fine particles is unstable, the density inside the pressed pyrophyllite is possibly uneven, the pressure transmission effect is finally influenced, and the synthesis quality of diamond is directly influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems of the pyrophyllite composite block, the utility model provides a large-size pyrophyllite composite block for synthesizing artificial diamond, which has the advantages of reasonable design, simple structure, better sealing performance, convenience in compounding and contribution to ensuring the quality of the synthesized diamond.

In order to achieve the purpose, the utility model adopts the technical scheme that the large-size pyrophyllite composite block for synthesizing the artificial diamond comprises a dolomite lining, a pyrophyllite block is arranged outside the dolomite lining, a through hole is formed in the center of the pyrophyllite, the pyrophyllite block comprises two end blocks which are identical in structure and are oppositely distributed at two ends of the dolomite lining, four cylindrical bars which are symmetrically distributed in pairs are arranged on the inner wall of each end block, cylindrical grooves matched with the cylindrical bars are formed in the outer wall of the dolomite lining, a peripheral groove is formed in the outer wall of each end block, a slope is formed in the middle of each peripheral groove, a middle ring is arranged between the two end blocks, the inner diameter of the middle ring is equal to the outer diameter of the peripheral groove, two end faces of the middle ring are stepped faces, and the stepped faces are in sealing fit with the groove bottom faces of the peripheral grooves.

Preferably, the inner wall of the end block is provided with an annular groove, one end of the annular groove close to the through hole is provided with a slope angle, and two ends of the dolomite lining are provided with grooves matched with the slope angles.

Preferably, the length of the intermediate ring is less than 1/3 of the total length of the pyrophyllite.

Preferably, the side surfaces of the cylindrical strip and the cylindrical groove are both semi-cylindrical surfaces.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. according to the large-size pyrophyllite composite block for synthesizing the artificial diamond, the homogeneity of the end block and the middle ring can be effectively guaranteed by adopting a sectional molding mode for the pyrophyllite block, so that the quality of the whole pyrophyllite block is guaranteed, and the sealing property and the pressure transmission effect of the pyrophyllite block after being compounded with the dolomite lining are guaranteed; the sealing performance and the structural stability of the device can be further improved by adopting the design of the cylindrical strip, the cylindrical groove, the slope and the step surface. The diamond synthesizing device has the advantages of reasonable design, simple structure, better sealing performance, convenience for composite forming, contribution to ensuring the quality of the synthesized diamond and suitability for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a sectional view of a large-size pyrophyllite composite block for synthesizing artificial diamond according to an embodiment;

FIG. 2 is an isometric view of a large-size pyrophyllite composite block for synthetic diamond according to an example;

FIG. 3 is an isometric view of an end-block provided by an embodiment;

figure 4 is an internal top view of an end-block provided by an embodiment;

FIG. 5 is an isometric view of a dolomite lining provided by an example;

FIG. 6 is a top view of a dolomite lining provided by the example;

FIG. 7 is an isometric view of an intermediate ring provided by the embodiments;

in the above figures:

1. a dolomite lining; 11. a cylindrical groove; 12. beveling;

2. pyrophyllite blocks; 21. a through hole; 22. an annular groove; 23. an end-block; 231. a cylindrical bar; 232. a peripheral groove; 233. a slope surface; 24. an intermediate ring; 241. a step surface; 25. and (6) slope angle.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the directions of the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1 to 7, the large-size pyrophyllite composite block for the synthetic artificial diamond comprises a dolomite lining 1, wherein a pyrophyllite block 2 is arranged outside the dolomite lining 1, and a through hole is formed in the center of the pyrophyllite. On the basis, the pyrophyllite block 2 provided by the utility model comprises two end blocks 23 which are identical in structure and are oppositely distributed at two ends of a dolomite lining 1, the inner wall of each end block 23 is provided with four cylindrical bars 231 which are symmetrically distributed in pairs, the outer wall of the dolomite lining 1 is provided with a cylindrical groove 11 matched with the cylindrical bars 231, the outer wall of each end block 23 is provided with a peripheral groove 232, the middle of each peripheral groove 232 is provided with a slope 233, a middle ring 24 is arranged between the two end blocks 23, the inner diameter of each middle ring 24 is equal to the outer diameter of each peripheral groove 232, two end faces of each middle ring 24 are stepped faces 241, and the stepped faces 241 are in sealing fit with the groove bottom faces of the peripheral grooves 232. The two ends adopt the same structure, not only can form a complete pyrophyllite block 2 with the middle ring 24 after butt joint, but also has higher interchangeability and has positive significance for reducing the production cost and saving resources. Specifically, can effectively guarantee the homogeneity of end block 23 and intermediate ring 24 through adopting the fashioned mode of segmentation to pyrophyllite piece 2, and then guarantee whole pyrophyllite piece 2 quality, intermediate ring 24 has higher leakproofness and better biography pressure effect as the transition part in the middle of two end blocks 23 can guarantee after it is compound with dolomite inside lining 1 moreover, especially can satisfy the needs of producing big specification pyrophyllite composite block. Further, the design of the peripheral groove 232 enables the outer wall of the middle ring 24 and the outer wall of the end block 23 to form a relatively smooth complete cylindrical surface, and the design of the slope 233 in the peripheral groove 232 and the stepped surface 241 of the middle ring 24 has positive significance on the structural stability of the whole pyrophyllite block 2 and is beneficial to reducing the probability of quality defects caused by stress concentration in the profiling process.

Considering that quality defects are easy to occur in the processes of powder compaction forming and demoulding of right-angle surface nodes, in order to improve the quality of the pyrophyllite composite block, the annular groove 22 is arranged on the inner wall of the end block 23, the end, close to the through hole, of the annular groove 22 is provided with a slope angle 25, and the two ends of the dolomite lining 1 are provided with grooves 12 matched with the slope angle 25. The design of the slope angle 25 can effectively avoid quality defects of a single end block 23 during molding or demolding, and the groove design of the dolomite lining 1 can form a surface contact pair with high goodness of fit with the slope angle 25 of the end block, thereby being beneficial to improving the sealing performance and the thermal stability of the product.

Considering the problem of the assembly sequence of the end block 23, the intermediate ring 24 and the dolomite lining 1 in one pyrophyllite block 2, in order to reduce the assembly difficulty of the pyrophyllite block 2, the length of the intermediate ring 24 provided by the utility model is smaller than 1/3 of the total length of the pyrophyllite, the protruding length of the intermediate ring 24 from the end face of one end block can be reduced, the impact of the end block 23 which is arranged later on the inner wall of the intermediate ring 24 can be avoided, the alignment difficulty of the end block 23 is reduced, and the production quality and the synthesis efficiency of the pyrophyllite composite block are improved.

Further, the side surfaces of the cylindrical bar 231 and the cylindrical groove 11 provided by the present invention are both semi-cylindrical surfaces. The design of the semi-cylindrical surface can enable the cylindrical bar 231 and the cylindrical groove 11 to obtain higher pressure resistance, the pressure transmission capacity is stronger, the structural stability is higher, and the utilization rate is higher.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims (4)

1. The utility model provides a synthetic diamond is with big specification pyrophyllite composite block, includes the dolomite inside lining, the outside of dolomite inside lining is provided with the pyrophyllite piece, the center of pyrophyllite is provided with the through-hole, a serial communication port, the pyrophyllite piece includes that the structure is the same and two end blocks of relative distribution at dolomite inside lining both ends, the inner wall of end block is provided with four two bisymmetry distributions's cylindricality strip, be provided with on the outer wall of dolomite inside lining with cylindricality strip complex cylindricality groove, be provided with week groove on the outer wall of end block, the centre in week groove is provided with domaticly, be provided with the intermediate ring between two end blocks, the internal diameter of intermediate ring equals the external diameter in week groove, the both ends face of intermediate ring is the ladder face, the ladder face cooperates with the tank bottom surface sealing of week groove.

2. The large-size pyrophyllite composite block for the synthetic artificial diamond according to claim 1, wherein an annular groove is formed in the inner wall of the end block, a slope angle is arranged at one end, close to the through hole, of the annular groove, and grooves matched with the slope angles are formed in two ends of the dolomite lining.

3. A large format pyrophyllite composite block for synthetic diamonds according to claim 2, wherein said intermediate ring has a length less than 1/3 of the overall length of the pyrophyllite.

4. The large-format pyrophyllite composite block for a synthetic artificial diamond according to claim 3, wherein the side surfaces of the columnar bars and the columnar grooves are semi-cylindrical surfaces.

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