A diamond screening device and method of use thereof

Abstract

The application relates to the technical field of diamond screening, and discloses a diamond screening device and a use method thereof, which comprises a screening device main body, a screening groove is arranged in the screening device main body, a feeding port for feeding diamond to be screened and communicating with the screening groove is arranged on the outer side of the screening device main body, a screening roller is rotatably arranged in the screening groove, a feeding groove communicating with the feeding port is arranged in the screening roller, four groups of strip-shaped plates are fixedly arranged in the feeding groove, and grooves are arranged in the strip-shaped plates. The driving motor is started to drive the whole screening roller to rotate in the screening groove, the annular frame does axial reciprocating linear motion in the feeding groove, the triangular blocks fixed on the annular frame slide in the discharging groove, the diamond can be stirred to accelerate the passing efficiency of the diamond through the screen hole, the diamond possibly stuck in the discharging groove can be physically pushed out, and the screen hole is prevented from being blocked.

Description

Technical Field

[0001] This invention relates to the field of diamond screening technology, specifically to a diamond screening device and its usage method. Background Technology

[0002] In the production process of synthetic diamonds, the diamond particles after initial synthesis are generally of different sizes and need to be screened and graded again to separate the diamond particles of different sizes for use. Currently, the diamond screening methods commonly used in the industry mainly include two categories: vibrating screening and centrifugal screening. Although vibrating screening has a simple structure, it is very easy to cause screen clogging when processing diamond micro powder with high hardness and irregular shape, which leads to a sharp drop in screening efficiency. Moreover, frequent screen cleaning will seriously affect the efficiency of continuous production. Centrifugal screening relies on the centrifugal force generated by high-speed rotation to throw out small particles. However, this method is extremely difficult to control for diamond particles with a particle size close to the screen aperture size, often resulting in low classification accuracy.

[0003] Patent document CN214289253U discloses a diamond screening device. The protected claim includes an outer casing with an inner wall inside. The bottom of the outer casing and the inner wall are mounted on a base plate. A screening and collecting device is provided above the base plate for screening diamond particles of different sizes. A flange is provided at the upper end of the inner wall, and an end cap is provided above the flange. This invention uses rotation to adjust the outer screen cylinder, changing the gap between the screen holes on the inner and outer screen cylinders. By rotating the inner and outer screen cylinders, diamond particles that can pass through this gap are screened out using the principle of centrifugal force. "It can produce diamond particles of any size. It has a simple structure and is easy to use." Although the device has achieved the function of adjusting the screen gap to a certain extent, when diamond particles are stuck in the screening tank, under the action of centrifugal force, the stuck diamonds will be squeezed more tightly into the screen holes, making the blockage more serious and the subsequent cleaning extremely difficult. Moreover, the diamond particles thrown out by centrifugal force will directly impact the inner wall of the equipment at a high speed, which will not only generate a lot of noise and dust, but also cause unnecessary breakage of diamond particles due to violent collision, seriously affecting the yield and product quality. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a diamond screening device and its usage method, which solves the problem of diamonds getting stuck in the discharge trough and affecting the diamond screening efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A diamond screening device includes a screening device body, a screening groove inside the screening device body, and a feed inlet connected to the screening groove for placing diamonds to be screened on the outer side of the screening device body. A screening roller is rotatably installed inside the screening groove, and a feed trough connected to the feed inlet is opened inside the screening roller. Four sets of strip plates are fixedly installed inside the feed trough, and each set of strip plates has a slot. An annular frame that is slidably connected to the strip plates is slidably installed inside the feed trough. The main body of the screening device is equipped with a screening mechanism that drives the screening roller to rotate while the annular frame moves back and forth in the feed trough to accelerate the diamond screening rate. Multiple sets of discharge troughs connected to the feed trough and the screening trough are evenly opened on the screening roller. An adjustment mechanism is installed inside the ring frame, which causes the opening of the discharge chute to continuously shrink through the reciprocating movement of the ring frame.

[0006] Preferably, the screening mechanism includes a triangular block fixedly installed on a ring frame and slidably connected to the discharge trough, a drive motor is fixedly installed inside the main body of the screening device, and a drive gear is fixedly installed on the drive motor.

[0007] Preferably, the screening mechanism further includes an external gear ring fixedly installed on the screening roller and meshing with the drive gear, and a reciprocating screw that passes through the screening roller is fixedly installed in the screening groove, and the reciprocating screw is threadedly connected to the ring frame.

[0008] Preferably, the adjustment mechanism includes an adjustment motor fixedly installed in a ring frame, and a pin is fixedly installed at the output end of the adjustment motor, with two sets of limiting grooves provided in the pin.

[0009] Preferably, the adjustment mechanism further includes four sets of fixed rods fixedly installed in the limiting grooves, each set of fixed rods is fitted with a spring, and each set of limiting grooves is slidably installed with a chamfered block that is slidably connected to the fixed rod.

[0010] Preferably, the adjustment mechanism further includes an adjustment gear rotatably installed inside the screening roller, the adjustment gear having a slot for cooperating with the insertion post, and the slot having multiple sets of grooves for cooperating with the inclined block.

[0011] Preferably, the adjusting mechanism further includes a transmission gear rotatably mounted inside the screening roller and meshing with the adjusting gear, a support ring rotatably mounted inside the screening roller, and an internal gear ring meshing with the transmission gear fixedly mounted on the support ring.

[0012] Preferably, the adjustment mechanism further includes multiple sets of arc-shaped grooves formed inside the screening roller and connected to the discharge trough, and each set of arc-shaped grooves has an arc-shaped plate slidably installed in it and fixedly connected to the support ring.

[0013] Preferably, a collection cabinet is plugged into and installed on the main body of the screening device.

[0014] A method of using a diamond screening device, the method comprising the following steps: Step 1: Pour the diamonds to be screened into the feed trough inside the screening roller through the feed inlet. Start the drive motor to drive the entire screening roller to rotate in the screening trough. The ring frame makes axial reciprocating linear motion in the feed trough, and the triangular block fixed on the ring frame slides in the discharge trough. Step 2: Start the adjusting motor to make the insert rotate. As the ring frame moves away from the feed inlet, the rotating insert gradually inserts into the slot. When the beveled block aligns with the groove, the beveled block inserts into the groove and drives the adjusting gear to rotate. Step 3: Adjust the gear to rotate so that the arc plate gradually slides into the arc groove. The opening space of the discharge chute, which was originally formed by the triangular block and the arc plate, is expanded. When the insert is pulled out of the slot, the adjusting gear loses power and stops rotating. Step 4: Under the combined action of the continuous rotation of the screening roller and the reciprocating disturbance of the ring frame, diamond particles smaller than the opening of the current discharge trough are screened out, pass through the discharge trough and fall into the screening trough below, and finally slide into the collection cabinet inserted into the main body of the screening device, completing one screening operation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention, through the setting of the screening mechanism, drives the entire screening roller to rotate in the screening tank by starting the drive motor, and the ring frame makes axial reciprocating linear motion in the feed tank. The triangular block fixed on the ring frame slides in the discharge tank. This not only agitates the diamonds to speed up their passage through the screen holes, but also physically pushes out diamonds that may be stuck in the discharge tank, preventing the screen holes from being blocked.

[0016] 2. The present invention, through the setting of the adjustment mechanism, after starting the adjustment motor and aligning the inclined block with the groove position, the insertion post rotates, causing the arc plate to gradually slide into the arc groove. The opening space of the discharge groove, which was originally composed of the triangular block and the arc plate, is expanded. When the insertion post is pulled out of the slot, the adjustment gear loses power and stops rotating. At this time, the opening size of the discharge groove is fixed at the dimension corresponding to the stroke, thereby completing the rapid adjustment of the discharge groove opening. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the overall internal structure of the main body of the screening device of the present invention from a first-view perspective; Figure 3 This is a schematic diagram of the overall structure of the main body of the screening device of the present invention from a second perspective. Figure 4 This is a schematic diagram of the overall internal structure of the screening roller of the present invention; Figure 5 This is a schematic diagram of the overall structure of the internal part of the screening roller of the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the arc-shaped plate and the screening roller of the present invention; Figure 7 This is a schematic diagram of the overall internal structure of the ring frame of the present invention; Figure 8 This is a schematic diagram of the overall structure of the adjusting gear of the present invention; Figure 9 For the present invention Figure 7 A magnified diagram of point A.

[0018] In the diagram: 1. Main body of the screening device; 101. Screening trough; 102. Feed inlet; 103. Screening roller; 104. Feed trough; 105. Strip plate; 106. Ring frame; 2. Screening mechanism; 201. Discharge trough; 202. Triangular block; 203. Drive motor; 204. Drive gear; 205. External gear ring; 206. Reciprocating screw; 3. Adjustment mechanism; 301. Adjustment motor; 302. Insert column; 303. Limiting groove; 304. Fixing rod; 305. Spring; 306. Inclined block; 307. Adjustment gear; 308. Slot; 309. Groove; 310. Transmission gear; 311. Support ring; 312. Internal gear ring; 313. Arc plate; 314. Arc groove; 4. Collection cabinet. Detailed Implementation

[0019] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] Example 1 Because diamonds stuck in the discharge trough affect the diamond screening efficiency, in order to solve this problem, refer to Figures 1-9This embodiment proposes a diamond screening device, including a screening device body 1. A screening groove 101 is formed inside the screening device body 1. An inlet 102, connected to the screening groove 101, is formed on the outer side of the screening device body 1 for placing diamonds to be screened. A screening roller 103 is rotatably mounted inside the screening groove 101. A feed trough 104, connected to the feed inlet 102, is formed inside the screening roller 103. The protective door on the screening device body 1 is opened, and the diamonds to be screened are placed through the feed inlet 102. The selected diamonds are poured into the feed trough 104 on the screening roller 103. Four sets of strip plates 105 are fixedly installed in the feed trough 104. Each set of strip plates 105 has a slot. An annular frame 106 is slidably installed in the feed trough 104 and slidably connected to the strip plates 105. The annular frame 106 is held by the strip plates 105, so that the annular frame 106 moves more stably in the feed trough 104. A collection cabinet 4 is inserted and installed on the main body 1 of the screening device to collect the screened diamonds.

[0021] The main body 1 of the screening device is equipped with a screening mechanism 2 that drives the screening roller 103 to rotate while the annular frame 106 moves back and forth in the feed trough 104 to accelerate the diamond screening rate. Multiple sets of discharge troughs 201 connected to the feed trough 104 and the screening trough 101 are evenly opened on the screening roller 103. The annular frame 106 is equipped with an adjustment mechanism 3 that makes the opening of the discharge trough 201 continuously shrink by the reciprocating movement of the annular frame 106, which is convenient for screening diamonds of different sizes.

[0022] The screening mechanism 2 includes a triangular block 202 fixedly installed on the ring frame 106 and slidably connected to the discharge trough 201. While agitating the diamond to accelerate its screening rate, it also prevents the diamond from getting stuck in the discharge trough 201 and affecting the screening efficiency. A drive motor 203 is fixedly installed inside the main body 1 of the screening device, and a drive gear 204 is fixedly installed on the drive motor 203. The screening mechanism 2 also includes an external toothed ring 205 fixedly installed on the screening roller 103 and meshing with the drive gear 204. A reciprocating screw 206 that passes through the screening roller 103 is fixedly installed inside the screening trough 101, and the reciprocating screw 206 is threadedly connected to the ring frame 106.

[0023] After adjusting the size of the discharge trough 201 by adjusting mechanism 3, start drive motor 203 to make drive gear 204 rotate. Drive gear 204 rotates and drives screening roller 103 connected to external gear ring 205 to rotate. The rotation of screening roller 103 makes the diamonds in the feed trough 104 disperse. Diamonds that do not meet the size requirements will fall into collection cabinet 4 through discharge trough 201. Under the clamping of strip plate 105, the rotation of screening roller 103 drives the ring frame 106 to rotate synchronously. The ring frame 106 rotates on reciprocating screw 206 and makes the ring frame 106 reciprocate along strip plate 105 in feed trough 104, which can quickly disperse diamonds. The movement of ring frame 106 drives triangular block 202 to move in discharge trough 201, which can avoid diamonds getting stuck in discharge trough 201 and affecting diamond screening efficiency. Example 2 Reference Figures 1-9 The adjustment mechanism 3 includes an adjustment motor 301 fixedly installed in the ring frame 106. A pin 302 is fixedly installed at the output end of the adjustment motor 301. Two sets of limiting grooves 303 are provided in the pin 302. The adjustment mechanism 3 also includes four sets of fixing rods 304 fixedly installed in the limiting grooves 303. A spring 305 is sleeved on each fixing rod 304. A slidable inclined block 306 slidably connected to the fixing rod 304 is slidably installed in each limiting groove 303. The fixing rods 304 make the inclined block 306 move more stably in the limiting groove 303, and the springs 305 allow the inclined block 306 to quickly return to its original position. The adjustment mechanism 3 also includes an adjustment gear 307 rotatably installed in the screening roller 103. The adjustment gear 307 has a slot 308 that cooperates with the pin 302. The slot 308 has multiple sets of grooves 309 that cooperate with the inclined block 306. When the rotating pin 302 is inserted into the slot 308, the spring 305... Under the action of the inclined block 306 entering the groove 309, the rotation of the insert 302 can drive the adjustment gear 307 to rotate. The adjustment mechanism 3 also includes a transmission gear 310 rotatably installed in the screening roller 103 and meshing with the adjustment gear 307. The diameter of the transmission gear 310 is larger than the diameter of the adjustment gear 307, and the number of teeth is relatively large, which facilitates more accurate adjustment of the opening size of the discharge trough 201. A support ring 311 is rotatably installed in the screening roller 103, and a fixed support ring 311 is fixed on it. The adjustment mechanism 3 also includes multiple sets of arc-shaped grooves 314 that are opened in the screening roller 103 and connected to the discharge trough 201. Each set of arc-shaped grooves 314 has an arc-shaped plate 313 that is fixedly connected to the support ring 311. When the support ring 311 rotates, it can drive the arc-shaped plate 313 to rotate. In the initial state, the arc-shaped plate 313 is in contact with the triangular block 202 on the ring frame 106, and the opening size of the discharge trough 201 is the smallest.

[0024] When it is necessary to adjust the opening size of the discharge chute 201, the adjusting motor 301 inside the annular frame 106 is activated, causing the insert 302 to rotate. As the annular frame 106 gets closer to the side furthest from the feed inlet 102, the insert 302 on the annular frame 106 will enter the slot 308. When the groove 309 and the inclined block 306 are not aligned, the inclined block 306 will be pressed into the limiting groove 303 by the slot 308, and the spring 305 will contract under force. When the inclined block 306 and the groove 309 are aligned, the spring 305 will return to its original position, allowing the inclined block 306 to insert. When the insert post 302 is inserted into the groove 309, its rotation drives the adjusting gear 307 to rotate. The rotating adjusting gear 307 drives the transmission gear 310 to rotate slowly. The rotating transmission gear 310 drives the support ring 311 connected to the internal gear ring 312 to rotate. The rotating support ring 311 drives the arc plate 313 to rotate, causing the arc plate 313 to slowly move into the arc groove 314, thereby expanding the opening size of the discharge groove 201. When the insert post 302 separates from the slot 308, the adjusting gear 307 will stop rotating, thus completing the rapid adjustment of the opening of the discharge groove 201.

[0025] Working principle: Before the equipment is started, the arc plate 313 inside the screening roller 103 is in contact with the triangular block 202 on the ring frame 106 in the initial position. At this time, the opening size of the discharge trough 201 is at its minimum. The operator opens the protective door on the main body 1 of the screening device and pours the diamond to be screened into the feed trough 104 inside the screening roller 103 through the feed port 102.

[0026] Start the drive motor 203 inside the main body 1 of the screening device. The motor drives the drive gear 204 to rotate. The drive gear 204 meshes with the external gear ring 205 fixedly installed on the screening roller 103, thereby driving the entire screening roller 103 to rotate in the screening trough 101. The diamonds in the feed trough 104 are tumbled and scattered accordingly.

[0027] Because a reciprocating screw 206 is fixedly installed inside the screening trough 101, and the screw is threadedly connected to the annular frame 106 inside the feed trough 104, when the screening roller 103 rotates, under the limiting clamping of the four sets of strip plates 105, the annular frame 106 cannot rotate independently, and can only be forced to make axial reciprocating linear motion in the feed trough 104 along the track of the reciprocating screw 206. The triangular block 202 fixed on the annular frame 106 moves back and forth accordingly, and always slides in the discharge trough 201. This continuous reciprocating interlacing action can not only agitate the diamond to speed up its passage through the screen holes, but also physically push out diamonds that may be stuck in the discharge trough 201, preventing the screen holes from being blocked.

[0028] The adjusting motor 301 installed in the ring frame 106 is started, and its output end drives the insert 302 to rotate. When the ring frame 106 moves away from the feed port 102, the rotating insert 302 gradually inserts into the slot 308 of the adjusting gear 307 inside the screening roller 103. When the insert 302 is inserted into the slot 308, if the beveled block 306 is not aligned with the groove 309 in the slot 308, the beveled block 306 will be pressed back into the limiting groove 303 by the inner wall of the slot 308 and compress the spring 305. Once it rotates to the corresponding position, the spring 305 releases its elastic force and pushes the beveled block 306 into the groove 309, realizing the circumferential locking between the insert 302 and the adjusting gear 307. The rotation of the insert 302 drives the adjusting gear 307 to rotate. The adjusting gear 307 meshes with the transmission gear 310, which in turn drives the internal gear ring 312 meshing with the transmission gear 310 to rotate, and finally drives the support ring 311 to rotate slowly.

[0029] The rotation of the support ring 311 causes the arc plate 313, which is fixedly connected to it, to slide in the arc groove 314. As the arc plate 313 gradually slides into the arc groove 314, the opening space of the discharge trough 201, which was originally formed by the triangular block 202 and the arc plate 313, is expanded. When the ring frame 106 moves to the limit position and begins to move in the opposite direction, the insert 302 is pulled out from the slot 308, and the adjusting gear 307 loses power and stops rotating. At this time, the opening size of the discharge trough 201 is fixed at the size corresponding to the stroke.

[0030] Under the combined action of the continuous rotation of the screening roller 103 and the reciprocating disturbance of the ring frame 106, diamond particles smaller than the opening of the current discharge trough 201 are screened out, pass through the discharge trough 201 and fall into the screening trough 101 below, and finally slide into the collection cabinet 4 inserted into the main body 1 of the screening device, completing one screening operation.

[0031] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diamond screening device, comprising a screening device body (1), characterized in that, The screening device body (1) has a screening groove (101) inside. The screening device body (1) has a feed inlet (102) on the outside for placing diamonds to be screened and connected to the screening groove (101). A screening roller (103) is rotatably installed in the screening groove (101). A feed trough (104) connected to the feed inlet (102) is opened in the screening roller (103). Four sets of strip plates (105) are fixedly installed in the feed trough (104). Each set of strip plates (105) has a slot. A ring frame (106) slidably connected to the strip plates (105) is slidably installed in the feed trough (104). The screening device body (1) is equipped with a screening mechanism (2) that drives the screening roller (103) to rotate while the ring frame (106) moves back and forth in the feed trough (104) to accelerate the diamond screening rate. The screening roller (103) has multiple sets of discharge troughs (201) that are connected to the feed trough (104) and the screening trough (101) evenly. An adjustment mechanism (3) is installed inside the ring frame (106) to continuously reduce the opening of the discharge chute (201) by reciprocating the movement of the ring frame (106).

2. The diamond screening device according to claim 1, characterized in that, The screening mechanism (2) includes a triangular block (202) fixedly installed on the ring frame (106) and slidably connected to the discharge trough (201). A drive motor (203) is fixedly installed inside the main body (1) of the screening device, and a drive gear (204) is fixedly installed on the drive motor (203).

3. The diamond screening device according to claim 2, characterized in that, The screening mechanism (2) further includes an external gear ring (205) fixedly installed on the screening roller (103) and meshing with the drive gear (204). A reciprocating screw (206) that passes through the screening roller (103) is fixedly installed in the screening groove (101), and the reciprocating screw (206) is threadedly connected to the ring frame (106).

4. The diamond screening device according to claim 1, characterized in that, The adjustment mechanism (3) includes an adjustment motor (301) fixedly installed in the ring frame (106). The output end of the adjustment motor (301) is fixedly installed with a plug (302), and two sets of limiting grooves (303) are opened in the plug (302).

5. A diamond screening device according to claim 4, characterized in that, The adjustment mechanism (3) also includes four sets of fixed rods (304) fixedly installed in the limiting groove (303). Each set of fixed rods (304) is fitted with a spring (305). Each set of limiting grooves (303) is slidably installed with a chamfered block (306) that is slidably connected to the fixed rod (304).

6. The diamond screening device according to claim 5, characterized in that, The adjustment mechanism (3) further includes an adjustment gear (307) rotatably installed in the screening roller (103). The adjustment gear (307) has a slot (308) that works with the insert (302). The slot (308) has multiple grooves (309) that work with the inclined block (306).

7. A diamond screening device according to claim 6, characterized in that, The adjustment mechanism (3) further includes a transmission gear (310) rotatably mounted inside the screening roller (103) and meshing with the adjustment gear (307). A support ring (311) is rotatably mounted inside the screening roller (103), and an internal gear ring (312) meshing with the transmission gear (310) is fixedly mounted on the support ring (311).

8. A diamond screening device according to claim 7, characterized in that, The adjustment mechanism (3) also includes multiple sets of arc-shaped grooves (314) opened in the screening roller (103) and connected to the discharge trough (201). Each set of arc-shaped grooves (314) is slidably installed with an arc-shaped plate (313) fixedly connected to the support ring (311).

9. A diamond screening device according to claim 1, characterized in that, A collection cabinet (4) is inserted and installed on the main body (1) of the screening device.

10. A method of using a diamond screening device, characterized in that, The diamond screening device includes any one of claims 1-8, and includes the following steps: Step 1: Pour the diamond to be screened into the feed trough (104) inside the screening roller (103) through the feed inlet (102), start the drive motor (203) to drive the entire screening roller (103) to rotate in the screening trough (101), the ring frame (106) makes axial reciprocating linear motion in the feed trough (104), and the triangular block (202) fixed on the ring frame (106) slides in the discharge trough (201); Step 2: Start the adjusting motor (301) to make the insert (302) rotate. When the ring frame (106) moves away from the feed inlet (102), the rotating insert (302) gradually inserts into the slot (308). When the bevel block (306) and the groove (309) are aligned, the bevel block (306) inserts into the groove (309) and drives the adjusting gear (307) to rotate. Step 3: The adjustment gear (307) rotates, causing the arc plate (313) to gradually slide into the arc groove (314). The opening space of the discharge chute (201), which was originally composed of the triangular block (202) and the arc plate (313), is expanded. When the insert (302) is pulled out of the slot (308), the adjustment gear (307) loses power and stops rotating. Step 4: Under the combined action of the continuous rotation of the screening roller (103) and the reciprocating disturbance of the ring frame (106), diamond particles smaller than the opening of the current discharge trough (201) are screened out, pass through the discharge trough (201) and fall into the screening trough (101) below, and finally slide into the collection cabinet (4) inserted into the main body (1) of the screening device, thus completing one screening operation.

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