A grading and screening device for synthetic diamond production

Abstract

The application discloses a grading and screening device for artificial diamond production and relates to the technical field of artificial diamond screening. The outer floating spiral drives the outer eaves of the spiral screen to reciprocate up and down, so that the stones rolling down along the spiral surface of the spiral screen generate the kinetic energy of gathering to the center, therefore, the stones falling on the spiral screen not only roll along the surface of the screen, but also gradually roll to the center of the spiral, and a multi-dimensional rolling motion state is presented, and the screen aperture is gradually reduced when the stones roll to the center, so that the stones are fully screened, and the elastic rope keeps the dynamic change of thick and thin at any time, therefore, the stones which are close to the screening proportion standard and are about to be clamped in the screen hole are driven by the horizontal and longitudinal dynamics of the spiral screen to be unclamped from the screen hole and smoothly fall into the lower screening system to be rolled inwards and downwards and screened again.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial diamond screening, in particular to a grading and screening device for artificial diamond production. BACKGROUND

[0002] The polyhedral morphology of artificial diamond is usually determined by its crystal growth process, and the crystal growth is affected by various factors, including temperature, pressure, growth rate and the direction of crystal growth. These factors can cause the speed of diamond crystal growth in different directions to be different, thereby forming faces of different sizes.

[0003] When screening diamonds, a multi-level screen mesh is generally used in combination with vibration. Polyhedral diamonds are not the same on every face and basically only meet the polyhedral nature. Traditional vibrating screens can only meet the grading and screening of blocky materials with little difference in length:width:height ratio. When there is a certain difference in length:width:height ratio, it is easy to make a mistake (for example, the screen hole in the current screening grade can screen the material with a particle size of 5:5:5 in length:width:height ratio, but some materials with a size of 4:4:7 should be screened into the next level of screen disc according to the standard that two sides do not meet the ratio value of 5, but the material may also have a certain probability of being stuck in the 5:5 filter hole by relying on the side with a ratio value of 7 after vibration, and so on. There will be more or less artificial diamonds that do not meet the corresponding grade in each grading and screening disc, and the diamond blocks with this morphology are also very easy to block the filter hole, and cannot be screened out.

[0004] In addition, after screening is completed, the screen disc needs to be removed level by level to take out the diamond material of different grades. Moreover, since the screen disc is made of metal material, the polyhedral hard material diamond material is easy to be stuck in the screen hole and difficult to be removed, often requiring the worker to knock the screen disc to the ground, so that the stuck diamond material falls down. This not only is troublesome and time-consuming, but also causes the screen disc to deform and affects the subsequent screening accuracy.

[0005] In view of the above problems, it is urgent to make innovative design on the basis of the original grading and screening device for artificial diamond production. SUMMARY

[0006] The technical scheme of the present application provides a solution significantly different from the prior art to solve the problem that the prior art solution is too single, and specifically aims to provide a grading and screening device for artificial diamond production to solve the problem that the conventional vibrating screen can only meet the grading and screening of blocky materials with little difference in length, width and height, and when there is a certain difference in length, width and height, it is easy to misjudge, resulting in low screening accuracy and the screen hole being easily blocked by the stone.

[0007] To achieve the above object, the present application provides the following technical scheme: a grading and screening device for artificial diamond production, comprising a base, a cover body connected to the central axis of the base, and an inner positioning spiral, a plurality of equidistantly distributed elastic spiral rods and an outer floating spiral floatingly attached to the inner wall of the cover body spirally distributed from the inside to the outside along the central axis of the base, wherein the inner ends of the elastic ropes are fixedly connected to the inner positioning spiral, and the elastic ropes are spirally distributed with a plurality of groups along the elastic spiral rods.

[0008] Preferably, a vibrating mechanism is installed at the upper end of the cover body and a feeding port is provided, and an upper space is reserved in the cover body for the outer spiral of the spiral screen to float up and down.

[0009] Preferably, the inner ends of the elastic ropes are fixedly connected to the inner positioning spiral, and the elastic ropes are spirally distributed with a plurality of groups along the elastic spiral rods.

[0010] Preferably, a floating cover is slidingly sleeved on the outside of the cover body, and the upper and lower ends of the floating cover are attached to the outer wall of the cover body, and a self-balancing floating assembly is installed between the outer floating spiral and the floating cover.

[0011] Preferably, the self-balancing floating assembly comprises a floating ring, a pull rod and an extension rod, and the floating ring is concentrically arranged above the cover body and at the central axis of the base, the lower end of the floating ring is fixedly provided with the pull rod and the extension rod at equal angles, and the T-shaped lower end of the pull rod is slidingly and penetratingly arranged in the inside of the floating cover.

[0012] Preferably, a plurality of counterweights are equiangularly distributed on the outside of the floating cover to balance the elastic force of the outer floating spiral, the ends of the elastic ropes are respectively penetratingly arranged in the outer floating spiral and the cover body and linearly extended to be fixed to the inner wall of the floating cover, and the sidewall of the cover body is provided with a fine hole for the elastic ropes to extend and retract.

[0013] Preferably, the pull rod is slidingly penetratingly arranged in the cover body and fixedly connected to each level of the outer floating spiral, and the outer floating spiral is made of elastic material.

[0014] Preferably, the outer wall of the telescopic rod is wound with a return spring, one end of the return spring is welded to the outer surface of the floating cover, and the other end of the return spring is fixed to the lower surface of the floating ring.

[0015] Preferably, a multi-stage discharge disc is arranged below the spiral screen and fixed to the center shaft of the base, and the multi-stage discharge disc is in a spiral winding posture and is provided with a plurality of spiral slides according to the falling area range of each stage of the spiral screen.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] When the stone falls on the spiral screen, the stone will normally roll or fall along the spiral surface of the spiral screen, but the outer floating spiral will drive the outer eaves of the spiral screen to reciprocate up and down, so that the stone rolling down along the spiral surface of the spiral screen generates a central convergence kinetic energy. Therefore, the stone falling on the spiral screen not only rolls along the screen surface, but also gradually locates the center of the spiral, showing a multi-dimensional rolling motion state. Moreover, when the stone rolls inward, the screen holes of the spiral screen are gradually reduced, and the stone is effectively screened during this process. At the same time, the elastic rope also changes dynamically from thick to thin during the multi-dimensional rolling screening of the stone, so that some stones that are close to the screening proportion standard and will be stuck in the screen holes will be released from the screen hole under the horizontal and vertical dynamic driving of the spiral screen and smoothly fall into the next stage of the screening system for further rolling and screening. Finally, after multi-stage repeated screening, the stone will fall from the corresponding annular area and fall on the multi-stage discharge disc corresponding to each area.

[0018] Effect 1: The stone falls in the form of spiral inward rolling, and in the rolling process, each face of the polyhedral stone will correspond to the screen hole, unlike the existing vibrating screen which can only turn over the stone by vibration, and there is a high probability that the same face will correspond to the screen hole. In the present application, the stone falling in the inward rolling state will correspond to the screen hole on each face, thereby improving the screening accuracy and preventing unqualified stones from remaining in the upper stage and failing to fall down.

[0019] Effect 2: One screening can achieve the effect of multiple screenings, and each stone will experience multiple layers of screening. At the same time, the outer floating spiral will drive the outer eaves of the spiral screen to reciprocate up and down, so that the stones rolling down along the spiral surface of the spiral screen will generate a central convergence kinetic energy. Therefore, the stones falling on the spiral screen will not only roll along the screen surface, but also gradually roll inward to the center of the spiral, showing a multi-dimensional rolling motion state. Moreover, the screen holes of the spiral screen are gradually reduced during the inward rolling of the stones, and the stones are effectively screened in this process. At the same time, the elastic rope is dynamically changing between thick and thin during the multi-dimensional rolling screening of the stones, so some stones that are close to the screening ratio standard and will be stuck in the screen holes will be released from the screen hole under the horizontal and vertical dynamic driving of the spiral screen and smoothly fall into the next level of screening system for further rolling and screening. Finally, after multiple levels of repeated screening, the stones will fall from the corresponding annular area and fall on the multi-level discharge tray corresponding to each area. After the range of falling is reduced layer by layer, the stones will fall in the radius range closest to the standard, and finally fall from the area suitable for the range, which can efficiently distinguish and screen the stones that are "ambiguous, not big or small".

[0020] Effect 3: The present application adopts a cross-spiral rod design with a circular cross-section, which improves the rolling performance of the stones and effectively prevents the stones from being stuck in the screen holes. After screening is completed, the stones have been automatically separated and output in stages, unlike the existing vibrating screen which still needs to be manually removed from each screen tray. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the first perspective view of the present application.

[0022] Figure 2 It is the second perspective view of the present application.

[0023] Figure 3 It is the perspective view of the present application.

[0024] Figure 4 It is the perspective view of the present application after removing the floating cover.

[0025] Figure 5 It is the perspective view of the cover of the present application.

[0026] Figure 6 It is the perspective view of the spiral screen of the present application.

[0027] Figure 7 It is the perspective view of the self-balancing floating assembly of the present application.

[0028] Figure 8A three-dimensional schematic view of the connecting of the pull rod and the spiral screen of the present application;

[0029] Figure 9 A three-dimensional schematic view of the multi-stage discharge tray of the present application;

[0030] Figure 10 A three-dimensional schematic view of the present application Figure 3 An enlarged structural schematic view of position A in the present application;

[0031] Figure 11 A three-dimensional schematic view of the present application Figure 8 An enlarged structural schematic view of position B in the present application.

[0032] In the figure: 1, base; 11, inner positioning spiral; 2, cover body; 21, outer floating spiral; 22, vibration mechanism; 3, elastic spiral rod; 4, elastic rope; 5, floating cover; 6, floating ring; 61, pull rod; 62, telescopic rod; 63, reset spring; 7, multi-stage discharge tray. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-11 The present application provides a technical solution: a grading screening device for synthetic diamond production, which comprises a base 1, a cover body 2 connected to the central axis of the base 1, and an inner positioning spiral 11, a plurality of equidistantly distributed elastic spiral rods 3, and an outer floating spiral 21 floatingly attached to the inner wall of the cover body 2, which are spirally distributed from inside to outside along the central axis of the base 1. The elastic spiral rods 3 and the outer floating spiral 21 have an elastic rope 4 slidingly penetrating through the inside thereof, and the elastic rope 4, the inner positioning spiral 11, the elastic spiral rods 3, and the outer floating spiral 21 together form a spiral screen with the outer spiral floating with vibration.

[0035] The upper end of the cover body 2 is provided with a vibration mechanism 22 and a feeding port, and the inside of the cover body 2 is reserved with an upper space for the outer spiral of the spiral screen to float up and down.

[0036] The inner end of the elastic rope 4 is fixedly connected to the inner positioning spiral 11, and the elastic rope 4 is spirally distributed with a plurality of groups along the elastic spiral rods 3.

[0037] The floating cover 5 is slidingly sleeved on the outside of the cover body 2, and the upper and lower ends of the floating cover 5 are attached to the outer wall of the cover body 2. A self-balancing floating assembly is installed between the outer floating spiral 21 and the floating cover 5.

[0038] The self-balancing floating assembly comprises a floating ring 6, a pull rod 61 and a telescopic rod 62, and the upper portion of the cover 2 is provided with the floating ring 6 concentrically with the central shaft of the base 1, the lower end of the floating ring 6 is fixed with the pull rod 61 and the telescopic rod 62 at equal angles, and the T-shaped lower end of the pull rod 61 is slidably penetrated into the inside of the floating cover 5.

[0039] The outside of the floating cover 5 is provided with a plurality of counterweights for balancing the elastic force of the outer floating spiral 21 at equal angles, the ends of the elastic ropes 4 are respectively penetrated through the outer floating spiral 21 and the cover 2 and kept linearly extended to be fixed to the inner wall of the floating cover 5, and the sidewall of the cover 2 is provided with a fine hole for the elastic ropes 4 to be telescoped.

[0040] The pull rod 61 is slidably penetrated into the cover 2 and fixedly connected with each level of the outer floating spiral 21, and the outer floating spiral 21 is made of elastic material.

[0041] The outer wall of the telescopic rod 62 is wound with a return spring 63, one end of the return spring 63 is welded to the outer surface of the floating cover 5, and the other end of the return spring 63 is fixed to the lower surface of the floating ring 6.

[0042] The lower portion of the spiral screen is provided with a plurality of levels of discharge trays 7 fixed at the center with the central shaft of the base 1, and the plurality of levels of discharge trays 7 are in spiral winding posture and provided with a plurality of spiral slides according to the falling area range of each level of the spiral screen.

[0043] In use, first, the vibration mechanism 22 is opened, the vibration mechanism 22 works to make the cover 2 produce vibration effect and stably transmit to the central shaft of the base 1, the spiral screen and the outside floating cover 5, and then the artificial diamond raw materials (hereinafter referred to as stone materials) to be screened are poured from the upper feeding port to the upper portion of the spiral screen inside the cover 2.

[0044] Since the mesh of the spiral screen gradually increases from inside to outside, the stone materials just falling on the upper end of the spiral screen will fall in irregular and chaotic posture, part of the stone materials will directly fall through the corresponding screen holes, and the other part of the stone materials will spiral down along the spiral surface of the screen.

[0045] 1、as Figure 2 , Figure 3 , Figure 8 and Figure 10As shown, in the closed state of the vibrating mechanism 22, the floating cover 5 and the outer floating spiral 21 maintain a relatively static balance state, but when the vibration generated by the vibrating mechanism 22 is transmitted to the entire screening device, the relatively static balance state between the floating cover 5 and the outer floating spiral 21 is quickly broken, and instead, the floating cover 5 will undergo small-amplitude reciprocating motion along the outer wall of the cover body 2 under the action of the gravity of the external counterweight when the vibration occurs, and will reciprocatingly push and pull the angularly distributed pull rods 61 in the form of compression and stretching of the reset spring 63 by virtue of its relatively large inertia, so that the pull rods 61 will synchronously drive the upper floating ring 6 to follow the floating cover 5 to undergo small-amplitude reciprocating motion, and the floating ring 6 will in turn reciprocatingly push and pull the outer floating spiral 21 through the angularly arranged pull rods 61, so that the outer floating spiral 21 will reciprocatingly move up and down relative to the inner positioning spiral 11.

[0046] 2. Secondly, during the dynamic occurrence of the synchronous up-and-down reciprocating movement of the floating cover 5 and the outer floating spiral 21, the synchronously upward or downward floating cover 5 and the outer floating spiral 21 will generate two-end tension on the elastic rope 4 (originally, the elastic rope 4 maintains a straight extension state and is limited by the cover body 2 side wall hole, when the floating cover 5 and the outer floating spiral 21 synchronously move upward and downward, the straight state of the elastic rope 4 will be broken and will be pulled into a broken line, and the path of the broken line form will increase and the elastic rope 4 will become thin), so when the floating cover 5 and the outer floating spiral 21 synchronously move upward and downward, the elastic rope 4 will dynamically repeat in the two states of broken line thinning and elastic rope thickening, so that the elastic rope 4 always maintains a certain dynamic state.

[0047] The motion properties of the above 1 and 2 are superimposed, and the effect is that when the stone falls on the spiral screen, the stone will normally roll or fall along the spiral surface of the spiral screen in turn, but due to the up-and-down reciprocating "flapping" of the outer floating spiral 21, the stone falling along the spiral surface of the spiral screen will generate a central convergence kinetic energy, so that the stone falling on the spiral screen will not only roll along the screen surface, but also gradually roll inward to the center of the inner positioning spiral 11, showing a multi-dimensional rolling motion state, and in the process of the stone rolling inward to the center, the screen hole of the spiral screen is gradually reduced, and in this process, the stone is effectively screened, and at the same time during the multi-dimensional rolling screening of the stone, the elastic rope 4 also keeps a dynamic change of thickening and thinning, so some stones that are close to the screening proportion standard and will be stuck in the screen hole will be released from the sticking with the screen hole under the driving of the horizontal and vertical dynamics of the spiral screen, and will smoothly fall into the lower screening system to roll inward and downward again and be screened again, and finally, after repeated screening, the stone will fall from the corresponding annular area and fall on the multi-level discharge tray 7 corresponding to each area.

[0048] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grading and screening device for the production of synthetic diamonds, characterized in that: The system includes a base (1), a cover (2) connected to the central axis of the base (1), and an inner positioning spiral (11), several equally spaced elastic spiral rods (3), and an outer floating spiral (21) that floats and fits against the inner wall of the cover (2) in sequence along the central axis of the base (1). Elastic ropes (4) slide through the elastic spiral rods (3) and the outer floating spiral (21). The elastic ropes (4), inner positioning spiral (11), elastic spiral rods (3), and outer floating spiral (21) together form an outer spiral screen that can float with vibration. The inner end of the elastic rope (4) is fixedly connected to the inner positioning spiral (11), and several groups of elastic ropes (4) are spirally distributed along the path of the elastic spiral rods (3). A floating cover (5) is slidably fitted on the outside of the cover (2), and the upper and lower ends of the floating cover (5) are both in contact with the outer wall of the cover (2). The outer floating spiral (21) and the floating cover (5) are connected in a spiral pattern. A self-balancing floating assembly is installed between the two parts. The self-balancing floating assembly includes a floating ring (6), a pull rod (61), and a telescopic rod (62). The floating ring (6) is arranged concentrically with the central axis of the base (1) above the cover (2). The lower end of the floating ring (6) is fixed with the pull rod (61) and the telescopic rod (62) at equal angles. The T-shaped lower end of the pull rod (61) is slidably inserted into the interior of the floating cover (5). The exterior of the floating cover (5) is distributed with several counterweights at equal angles to balance the elastic force of the outer floating spiral (21). The ends of the elastic rope (4) pass through the outer floating spiral (21) and the cover (2) respectively and extend in a straight line to the inner wall of the floating cover (5). The side wall of the cover (2) is provided with a small hole for the elastic rope (4) to extend and retract. The pull rod (61) slides through the cover (2) and is fixedly connected to each level of the outer floating spiral (21). The outer floating spiral (21) is made of elastic material.

2. The grading and screening device for synthetic diamond production according to claim 1, characterized in that: The upper end of the cover (2) is equipped with a vibration mechanism (22) and a feed inlet. The interior of the cover (2) is reserved with an upper space for the spiral screen to float up and down.

3. The grading and screening device for synthetic diamond production according to claim 1, characterized in that: The outer wall of the telescopic rod (62) is wrapped with a return spring (63), one end of the return spring (63) is welded to the outer surface of the floating cover (5), and the other end of the return spring (63) is fixed to the lower surface of the floating ring (6).

4. The grading and screening device for synthetic diamond production according to claim 1, characterized in that: Below the spiral screen is a multi-stage discharge plate (7) fixed at the center of the base (1) and the multi-stage discharge plate (7) is spirally coiled and has several spiral slides according to the material drop area of ​​each stage of the spiral screen.

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