Classification screening device for artificial diamond production

Abstract

The invention discloses a graded screening device for artificial diamond production, and relates to the technical field of artificial diamond screening, as an outer floating screw can drive the outer edge of a spiral screen to flutter up and down in a reciprocating manner, stones rolling down along the spiral surface of the spiral screen generate kinetic energy approaching the center, and the stones are separated from each other. Therefore, stones falling on the spiral screen mesh not only can roll down along the surface of the screen mesh, but also can gradually roll towards the center of the inner positioning helix to present a multi-dimensional rolling motion state, and when the stones roll towards the inner center in a close-up manner, the aperture of the screen mesh is gradually reduced, and the stones are fully screened during the period, so that the screening efficiency is improved. And meanwhile, the elastic ropes keep the dynamic change of thick and thin at any time, so that the stone which is just close to the screening proportion standard and is to be clamped in the screen holes is released from the screen holes under the driving of the horizontal dynamic state and the longitudinal dynamic state of the spiral screen mesh, smoothly falls into a next-stage screening system, rolls inwards and downwards again and is screened again.

Description

Technical Field

[0001] The invention relates to the technical field of artificial diamond screening, in particular to a grading and screening device for artificial diamond production. Background Art

[0002] The polyhedral morphology of artificial diamonds is usually determined by their crystal growth process, which is affected by many factors, including temperature, pressure, growth rate and direction of crystal growth. These factors may cause diamond crystals to grow at different speeds in different directions, thus forming faces of different sizes.

[0003] When diamonds are graded and screened, they are generally screened in a multi-level mesh with vibration. Polyhedral diamonds are not the same on every face, and basically can only meet the multi-faceted nature. Traditional vibrating screens can only meet the graded screening of bulk materials with a small difference in length: width: height ratio. When there is a certain difference in the length: width: height ratio, it is easy to make a misjudgment (for example, the sieve holes in the current screening level can screen materials with a length-width ratio within 5:5:5, while some materials with a size of 4:4:7, it stands to reason that the materials of this size have two sides that do not meet the requirements. The material with a ratio value of less than 5 needs to be screened into the next level of sieve plate. However, after the vibration length, width and height conversion, there is a certain probability that the material will be stuck on the 5:5 filter hole by relying on the edge with a ratio value of 7 and cannot go down. By analogy, each level of the sub-screen plate will have more or less artificial diamonds that do not meet the corresponding level, and this form of diamond blocks is also very easy to block the filter holes, unable to go up or down). The subsequent materials that do not meet the corresponding level can only be selected manually or repeatedly screened; In addition, after screening, it is generally necessary to remove the sieve plates one level at a time to take out diamond materials of different grades. Moreover, since the sieve plates are made of metal, the diamond materials made of polyhedral hard materials can easily get stuck in the sieve holes and are difficult to remove. Workers are often required to turn the sieve plates upside down and knock them hard against the ground before the stuck diamond materials fall off. This is not only troublesome but also causes the sieve plates to deform, affecting the subsequent screening accuracy.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original grading and screening device for artificial diamond production. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide a grading and screening device for artificial diamond production, so as to solve the problem that the traditional vibrating screen can only meet the grading screening of bulk materials with little difference in length: width: height ratio, and when there is a certain difference in the length: width: height ratio, misjudgment is easy to occur, resulting in low screening accuracy and the screen holes are easily stuck by stones.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: 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 elastic spiral rods distributed at equal intervals, and an outer floating spiral floatingly fitted with the inner wall of the cover body, which are spirally distributed from the inside to the outside along the central axis of the base, wherein an elastic rope is inserted through the inner sliding of the elastic spiral rod and the outer floating spiral, and the elastic rope, the inner positioning spiral, the elastic spiral rod and the outer floating spiral together constitute a spiral screen whose outer spiral can float with vibration.

[0007] Preferably, a vibration mechanism is installed at the upper end of the cover body and a feed port is provided, and an upper space is reserved inside the cover body for the outer spiral of the spiral screen to float up and down.

[0008] Preferably, the inner end of the elastic rope is fixedly connected to the inner positioning spiral, and the elastic rope is spirally distributed in a plurality of groups with the elastic spiral rod as a path.

[0009] Preferably, a floating cover is provided on the external sliding sleeve of the cover body tube, and the upper and lower ends of the floating cover are both in contact with the outer wall of the cover body, and a self-balancing floating component is installed between the outer floating spiral and the floating cover.

[0010] Preferably, the self-balancing floating assembly includes a floating ring, a pull rod and a telescopic rod, and a floating ring is arranged above the cover body concentrically with the central axis of the base, the pull rod and the telescopic rod are fixed at equal angles at the lower end of the floating ring, and the T-shaped lower end of the pull rod is slidably penetrated into the interior of the floating cover.

[0011] Preferably, the outside of the floating cover is provided with a number of counterweights distributed at equal angles to balance the elastic force of the outer floating spiral, the ends of the elastic rope respectively pass through the outer floating spiral and the cover body and extend in a straight line to the inner wall fixed to the floating cover, and the side wall of the cover body is provided with fine holes for the elastic rope to be extended and retracted.

[0012] Preferably, the pull rod slides through the cover body and is fixedly connected to each level of the outer floating spiral, and the outer floating spiral is made of elastic material.

[0013] Preferably, a return spring is wound around the outer wall of the telescopic rod, 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.

[0014] Preferably, a multi-stage discharge tray is provided below the spiral screen and its center is fixed to the central axis of the base. The multi-stage discharge tray is in a spirally wound posture and is provided with a plurality of spiral slideways according to the range of the dropping area of ​​each level of the spiral screen.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the stones fall on the spiral screen, they will normally roll or fall along the spiral surface of the spiral screen. However, the outer floating spiral will drive the outer edge of the spiral screen to "fan" up and down, so that the stones rolling down along the spiral surface of the spiral screen will generate kinetic energy to move toward the center. 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, presenting a multi-dimensional rolling motion state. Moreover, when the stones roll inward, the screen holes of the spiral screen will also gradually expand. Gradually shrink, in this process the stone is effectively screened, at the same time, during the multi-dimensional rolling screening of the stone, the elastic rope also keeps the dynamic change of sometimes coarse and sometimes fine, so some stones that are close to the screening ratio standard and are about to be stuck in the screen hole will be released from the screen hole and smoothly fall into the lower screening system under the horizontal and vertical dynamic drive of the spiral screen, and then roll down and screen again. Finally, after multiple levels of repeated screening, the stones will fall from their corresponding annular areas and fall on the multi-level discharge trays corresponding to each area. Effect 1: When the stone falls, it will roll down in the form of spiral inward contraction. During the rolling process, each face of the polyhedral stone will correspond to the leakage hole. Unlike the existing vibrating screen, which can only turn the stone over by vibration, there is a high probability that repeated faces will correspond to the sieve holes. In the present invention, each face of the stone falling in the inward rolling state will correspond to the leakage hole head-on, thereby improving the screening accuracy and preventing unqualified stones from being left in the previous level and unable to fall; Effect 2: One screening can achieve the effect of multiple screenings. Each stone has to go through multiple layers of screening. At the same time, the outer floating spiral will drive the outer edge of the spiral screen to "fan" up and down, so that the stones rolling down along the spiral surface of the spiral screen will generate kinetic energy to move toward the center. 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 positioning spiral, presenting a multi-dimensional rolling state of motion. Moreover, when the stones roll inward, the screen holes of the spiral screen are also gradually shrinking. In this process, the stones are effectively screened. At the same time, during the multi-dimensional rolling screening of the stones, the elastic ropes are also It always keeps the dynamic change of sometimes coarse and sometimes fine, so some stones that are close to the screening ratio standard and are about to be stuck in the screen hole will be released from the screen hole and smoothly fall into the lower screening system under the horizontal and vertical dynamic drive of the spiral screen, and then roll down and be screened again. Finally, after multiple levels of repeated screening, the stones will fall from their corresponding annular areas and fall on the multi-level discharge trays corresponding to each area. After the falling range is reduced layer by layer, the stones will fall within the radius closest to the standard, and finally fall from the area suitable for its range, which can effectively distinguish and screen out those "ambiguous, not too big or too small" stones; Effect 3: The present invention adopts a horizontal and vertical spiral rod design with a circular cross-section, which can improve the rolling performance of the stones and effectively prevent the stones from being stuck in the leakage holes; after the screening is completed, automatic separation and output are completed step by step, unlike the existing vibrating screen, which still requires manual removal of stones from each sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first stereoscopic schematic diagram of the present invention; Figure 2 It is a second stereoscopic schematic diagram of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 4 It is a three-dimensional schematic diagram of the whole of the present invention after removing the floating cover; Figure 5 It is a three-dimensional schematic diagram of the cover body of the present invention; Figure 6 It is a three-dimensional schematic diagram of the spiral screen of the present invention; Figure 7 It is a three-dimensional schematic diagram of the self-balancing floating assembly of the present invention; Figure 8 A three-dimensional schematic diagram of the connection between the pull rod and the spiral screen of the present invention; Fig. 9 It is a three-dimensional schematic diagram of the multi-stage discharging tray of the present invention; Fig.10 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Fig.11 For the present invention Figure 8 Enlarged structural diagram at B in the middle.

[0017] 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

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-11 The present invention provides a technical solution: a grading and screening device for artificial diamond production, comprising 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 elastic spiral rods 3 distributed at equal intervals, and an outer floating spiral 21 floatingly fitted with the inner wall of the cover body 2 are spirally distributed in sequence from the inside to the outside along the central axis of the base 1, an elastic rope 4 is slidably penetrated inside the elastic spiral rod 3 and the outer floating spiral 21, and the elastic rope 4, the inner positioning spiral 11, the elastic spiral rod 3 and the outer floating spiral 21 together constitute a spiral screen whose outer spiral can float with vibration.

[0020] A vibration mechanism 22 is installed at the upper end of the cover body 2 and a feed port is provided. An upper space is reserved inside the cover body 2 for the outer spiral of the spiral screen to float up and down.

[0021] The inner end of the elastic cord 4 is fixedly connected to the inner positioning spiral 11, and the elastic cord 4 is spirally distributed in a plurality of groups with the elastic spiral rod 3 as a path.

[0022] A floating cover 5 is provided on the outer sliding sleeve of the cover body 2 , and the upper and lower ends of the floating cover 5 are both in contact with the outer wall of the cover body 2 , and a self-balancing floating component is installed between the outer floating spiral 21 and the floating cover 5 .

[0023] The self-balancing floating assembly includes a floating ring 6, a pull rod 61 and a telescopic rod 62, and a floating ring 6 is arranged above the cover body 2 concentrically with the central axis of the base 1, and a pull rod 61 and a telescopic rod 62 are fixed at equal angles at the lower end of the floating ring 6, and the T-shaped lower end of the pull rod 61 is slidably penetrated into the interior of the floating cover 5.

[0024] The outside of the floating cover 5 is provided with a number of counterweights distributed at equal angles to balance the elastic force of the outer floating spiral 21. The ends of the elastic rope 4 respectively pass through the outer floating spiral 21 and the cover body 2 and extend in a straight line to the inner wall fixed to the floating cover 5. The side wall of the cover body 2 is provided with fine holes for the elastic rope 4 to be extended and retracted.

[0025] The pull rod 61 slides through the cover body 2 and is fixedly connected to each level of the outer floating spiral 21. The outer floating spiral 21 is made of elastic material.

[0026] A return spring 63 is wound around the outer wall of the telescopic rod 62 , 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 .

[0027] A multi-stage discharging tray 7 is arranged below the spiral screen, the center of which is fixed to the central axis of the base 1, and the multi-stage discharging tray 7 is in a spiral winding posture and is provided with a plurality of spiral slideways according to the range of the dropping area of ​​each level of the spiral screen.

[0028] When in use, first turn on the vibration mechanism 22. The vibration mechanism 22 works to make the cover body 2 produce a vibration effect and stably transmit it to the central axis of the base 1, the spiral screen and the external floating cover 5. Then, the artificial diamond raw material to be screened (hereinafter referred to as stone) is poured from the upper feed port to the top of the spiral screen inside the cover body 2.

[0029] Since the mesh size of the spiral screen increases gradually from the inside to the outside, the stones that have just landed on the upper end of the spiral screen will fall in an irregular and chaotic manner. Some stones will pass through the corresponding mesh holes and fall directly, while others will spiral down step by step along the spiral surface of the screen. At this time, the self-balancing floating component begins to play a role, specifically: 1. If Figure 2 , Figure 3 , Figure 8 and Fig.10 As shown, when the vibration mechanism 22 is closed, the floating cover 5 and the outer floating spiral 21 maintain a relatively static equilibrium state. However, when the vibration generated by the vibration mechanism 22 is transmitted to the entire screening equipment, the relatively static equilibrium state between the floating cover 5 and the outer floating spiral 21 will be quickly broken. Instead, the floating cover 5 will perform a small reciprocating motion up and down along the outer wall of the cover body 2 under the support of the gravity of the external counterweight block when vibration occurs, and use its own relatively large inertia to push and pull the pull rod 61 distributed at equal angles by compressing and stretching the reset spring 63, so that the pull rod 61 will synchronously drive the floating ring 6 at the upper end to follow the floating cover 5 to perform a small reciprocating motion up and down, and the floating ring 6 will push and pull the outer floating spiral 21 up and down through the pull rod 61 set at equal angles, so that the outer floating spiral 21 reciprocates up and down relative to the inner positioning spiral 11. 2. Secondly, during the dynamic period when the floating cover 5 and the outer floating spiral 21 synchronously move up and down, the floating cover 5 and the outer floating spiral 21 moving upward or downward synchronously will generate tensioning forces at both ends of the elastic rope 4 (the elastic rope 4 originally maintains a straight extension state and is limited by the fine holes on the side wall of the cover body 2. When the floating cover 5 and the outer floating spiral 21 move upward and downward synchronously, the straight state of the elastic rope 4 will be broken and pulled into a broken line, and the path of the broken line will increase, resulting in the phenomenon of the elastic rope 4 becoming thinner). Therefore, when the floating cover 5 and the outer floating spiral 21 move upward and downward synchronously, the elastic rope 4 will dynamically repeat in two states: the thinning of the broken line and the rebound and thickening, so that the elastic rope 4 always maintains a certain dynamic state; The superposition of the motion properties of 1 and 2 above produces the following effect: when the stone falls on the spiral screen, normally the stone will roll or fall down along the spiral surface of the spiral screen in sequence. However, since the outer floating spiral 21 drives the outer edge of the spiral screen to "fan" up and down, the stone rolling down along the spiral surface of the spiral screen generates kinetic energy to move toward the center. Therefore, the stone falling on the spiral screen will not only roll down along the screen surface, but also gradually roll toward the center where the inward positioning spiral 11 is located, presenting a multi-dimensional rolling motion state. In addition, when the stone rolls toward the inner side, The screen holes of the spiral screen are also gradually shrinking. In this process, the stones are effectively screened. At the same time, during the multi-dimensional rolling screening of the stones, the elastic rope 4 also keeps a dynamic change of sometimes coarse and sometimes fine. Therefore, some stones that are close to the screening ratio standard and are about to be stuck in the screen holes will be released from the screen holes under the horizontal and vertical dynamic driving of the spiral screen and smoothly fall into the lower screening system to roll inward and downward again and be screened again. Finally, after multiple levels of repeated screening, the stones will fall from their corresponding annular areas and fall on the multi-level discharge trays 7 corresponding to each area.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grading and screening device for producing artificial diamonds, characterized in that: The invention 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 elastic spiral rods (3) distributed at equal intervals, and an outer floating spiral (21) floatingly fitted with the inner wall of the cover body (2) are spirally distributed in sequence from the inside to the outside along the central axis of the base (1); an elastic rope (4) is slidably penetrated inside the elastic spiral rod (3) and the outer floating spiral (21); the elastic rope (4), the inner positioning spiral (11), the elastic spiral rod (3) and the outer floating spiral (21) together constitute a spiral screen whose outer spiral can float with vibration; 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 in a plurality of groups with the elastic spiral rod (3) as a path; a floating cover (5) is slidably sleeved on the outer side of the cover body (2), and the upper and lower ends of the floating cover (5) are both fitted with the outer wall of the cover body (2); the outer floating spiral (21) and the floating cover (5) are connected to each other. A self-balancing floating assembly is installed in the middle, the self-balancing floating assembly comprises a floating ring (6), a pull rod (61) and a telescopic rod (62), and a floating ring (6) is arranged above the cover body (2) concentrically with the central axis of the base (1), the pull rod (61) and the telescopic rod (62) are fixed at equal angles on the lower end of the floating ring (6), and the T-shaped lower end of the pull rod (61) is slidably penetrated and arranged inside the floating cover (5), and a plurality of counterweight blocks for balancing the elastic force of the outer floating spiral (21) are distributed at equal angles on the outside of the floating cover (5), the ends of the elastic rope (4) respectively penetrate the outer floating spiral (21) and the cover body (2) and extend in a straight line to the inner wall fixed to the floating cover (5), and the side wall of the cover body (2) is provided with a fine hole for the elastic rope (4) to be extended and retracted, the pull rod (61) is slidably penetrated through the cover body (2) and is fixedly connected to each level of the outer floating spiral (21), and the outer floating spiral (21) is made of elastic material.

2. The grading and screening device for producing artificial diamonds according to claim 1, characterized in that: A vibration mechanism (22) is installed at the upper end of the cover body (2) and a feed port is provided, and an upper space is reserved inside the cover body (2) for the outer spiral of the spiral screen to float up and down.

3. The grading and screening device for producing artificial diamonds according to claim 1, characterized in that: A return spring (63) is wound around the outer wall of the telescopic rod (62), 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 producing artificial diamonds according to claim 1, characterized in that: A multi-stage discharge tray (7) is provided below the spiral screen and is fixed to the central axis of the base (1) at its center. The multi-stage discharge tray (7) is in a spirally wound posture and is provided with a plurality of spiral slideways according to the range of the material dropping areas of each stage of the spiral screen.

Images