Seed crystal roller grinding equipment

Abstract

The utility model discloses a seed crystal double-roller grinding device which comprises a grinding cavity, a plurality of grinding rollers, a plurality of grinding rollers, a plurality of grinding rollers, a plurality of grinding rollers, a plurality of grinding rollers, a plurality of grinding rollers and a plurality of grinding rollers, wherein the grinding cavity is internally provided with a hollow grinding chamber; a feeding hole is formed in the top of the wall body of the grinding cavity and is communicated with the grinding chamber; the grinding roller pair is rotatably arranged in the grinding chamber, and the feeding hole and the grinding roller pair are correspondingly arranged; the two sides in a grinding gap of the grinding roller pair are respectively provided with the stopping parts, and the stopping parts are used for stopping seed crystals on the grinding roller pair from moving towards the outer parts of the two ends of the grinding roller pair.

Description

Technical Field

[0001] The utility model relates to a vertical double-roll grinding machine, in particular to a seed double-roll grinding device. Background Art

[0002] In the granular silicon production process, the seed crystals enter the fluidized bed for growth. Silicon will be enriched on the seed crystals that are input, and grow into particles of a certain size that are discharged into the product collector and sold as products. A small amount of silane decomposes to form metallic powdered silicon.

[0003] Seed grinding plays a vital role in the production of granular silicon. The ground seed can not only improve the surface quality and uniformity of the crystal, but also optimize the crystal growth process, improve production efficiency and reduce energy consumption. Therefore, seed grinding is an important link to ensure the quality and production efficiency of granular silicon products.

[0004] At present, the crystal seed grinding adopts roller grinding. When the grinding equipment is grinding granular silicon crystal seeds, the feeding process will occasionally increase. If the feeding amount increases beyond the grinding amount, the crystal seeds will squeeze the feeding from both ends of the roller, which will cause the crystal seeds to squeeze the rollers and wear the housing of the grinding equipment, thereby damaging the equipment and increasing the frequency of maintenance.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0006] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a seed roller grinding device in view of the shortcomings of the prior art, which can avoid the problem of damage to the equipment due to the increase in the amount of material fed exceeding the grinding amount, the seeds being squeezed at both ends of the grinding rollers and the wear of the housing of the grinding equipment.

[0007] In order to solve the above technical problems, the utility model discloses a seed roll grinding device, which comprises:

[0008] A grinding cavity, wherein the interior of the grinding cavity is a hollow grinding chamber; a feed inlet is provided on the top of the wall of the grinding cavity, and the feed inlet is connected to the grinding chamber;

[0009] A pair of grinding rollers rotatably arranged in the grinding chamber, wherein the feed port is arranged corresponding to the pair of grinding rollers;

[0010] And a stopper, wherein the stopper is respectively arranged on both sides of the grinding gap of the grinding roller pair, and the stopper is used to prevent the seed crystal on the grinding roller pair from moving to the outside of the two ends of the grinding roller pair.

[0011] In some embodiments, the grinding roller pair includes two grinding rollers. An annular stop protrusion is connected to the outer peripheral wall at both ends of the axial direction of any one of the two grinding rollers, and the portion of the annular stop protrusion extending into the grinding gap of the grinding roller pair forms the stop portion.

[0012] In some embodiments, the feed opening is a narrow feed opening and its shape corresponds to the shape of the grinding gap of the grinding roller pair.

[0013] In some embodiments, the two grinding rollers include a main grinding roller and an auxiliary grinding roller drivingly connected to the main grinding roller.

[0014] In some embodiments, the seed roll grinding apparatus includes an electric drive mechanism configured to drive the main grinding roll to rotate.

[0015] In some embodiments, the seed roll grinding device includes a driving gear and a driven gear, the two ends of the main grinding roller along its axial direction are coaxially connected to the driving gear, the two ends of the auxiliary grinding roller along its axial direction are coaxially connected to the driven gear, the driving gear and the driven gear are meshed to form a gear transmission pair, which is used to realize the transmission connection between the main grinding roller and the auxiliary grinding roller. The gear transmission pair is respectively located between the stopper on the corresponding side and the body wall of the grinding chamber.

[0016] In some embodiments, the seed crystal roller grinding device further comprises a lower material bin connected to the feed inlet of the grinding chamber. The lower material bin is configured to hold the seed crystals to be ground, and the seed crystals to be ground enter the grinding chamber through the feed inlet.

[0017] In some embodiments, the seed roller grinding device includes a discharge port, the discharge port is opened at the bottom of the wall of the grinding cavity, and the discharge port is connected to the grinding chamber.

[0018] In some embodiments, the lower end of the grinding chamber is funnel-shaped, which is used to collect the ground seed crystals to the discharge port.

[0019] In some embodiments, the seed roll grinding apparatus includes a discharge pipe, which is disposed below the grinding chamber and communicated with a discharge port of the grinding chamber.

[0020] Beneficial effects:

[0021] 1. The utility model provides stoppers on both sides of the grinding gap of the grinding rollers. During the grinding process, when the feeding amount exceeds the grinding amount, the stoppers prevent the seeds on the grinding rollers that have not been ground in time from moving to the outside of the two ends of the grinding rollers, thereby avoiding wear on the grinding cavity, avoiding equipment damage, and reducing the frequency of grinding equipment maintenance.

[0022] 2. The utility model prevents the feeding amount from exceeding the grinding amount by setting the feeding opening as a narrow feeding opening and the shape of which corresponds to the shape of the grinding gap of the grinding roller pair.

[0023] 3. The utility model adopts a grinding roller pair consisting of a main grinding roller and an auxiliary grinding roller transmission-connected to the main grinding roller. This grinding roller pair can be driven by an electric drive mechanism, which helps to reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, and the above and / or other advantages of the present invention will become more clear.

[0025] Figure 1 This is a structural perspective view of a seed roll grinding device disclosed in the first embodiment of the utility model.

[0026] Figure 2 for Figure 1 Schematic diagram of the internal structure of the seed roll grinding equipment shown.

[0027] The reference numerals in the accompanying drawings are as follows: 100, grinding cavity; 110, grinding chamber; 111, lower end of grinding chamber; 120, feed port; 130, discharge port; 200, grinding roller pair; 210, grinding gap; 220, main grinding roller; 230, auxiliary grinding roller; 300, stopper; 400, electric drive mechanism; 500, gear transmission pair; 510, driving gear; 520, driven gear; 600, lower bin; 700, discharge pipe. DETAILED DESCRIPTION

[0028] Example 1

[0029] This embodiment discloses a seed roll grinding device of the utility model, see Figure 1 and Figure 2 The seed roller grinding device includes a grinding chamber 100 , a grinding roller 200 and a stopper 300 .

[0030] In this embodiment, the seed crystal is a granular silicon seed crystal, a polycrystalline silicon with a particle size of 150 μm±20 μm.

[0031] See also Figure 1The grinding chamber 100 has a hollow grinding chamber 110 inside. A feed port 120 is provided at the top of the wall of the grinding chamber 100, and a discharge port 130 is provided at the bottom of the wall of the grinding chamber 100. The feed port 120 is connected to the grinding chamber 110, and the grinding chamber 110 is connected to the discharge port 130. The feed port 120 is used for the seed crystals to be ground to enter the grinding chamber 110.

[0032] See also Figure 1 The grinding roller pair 200 is rotatably disposed in the grinding chamber 110 . The feed port 120 is disposed corresponding to the grinding roller pair 200 .

[0033] See also Figure 2 The stopper 300 is respectively provided on both sides of the grinding gap 210 of the grinding roller 200, and the stopper 300 is used to prevent the seed crystal on the grinding roller 200 from moving to the outside of the two ends of the grinding roller.

[0034] The seed crystals to be ground enter the grinding chamber 110 from the feed port 120 and fall on the grinding rollers 200. When the grinding rollers 200 rotate, the grinding rollers 200 drive the seed crystals above them to pass through the grinding gap 210, so that the seed crystals are ground. The ground seed crystals fall into the part of the grinding chamber 110 below the grinding rollers 200, and are finally discharged through the discharge port 130.

[0035] When the feeding amount of the seed crystal to be ground exceeds the grinding amount of the grinding roller 200, the stopper 300 serves to prevent the seed crystal and other materials on the grinding roller 200 from moving to the outside of the two ends of the grinding roller.

[0036] For details, see Figure 1 The grinding roller pair 200 includes two grinding rollers, which rotate toward each other to achieve the grinding function. An annular stop protrusion is connected to the outer peripheral wall of both ends of either of the two grinding rollers along its axial direction, and the part of the annular stop protrusion extending into the grinding gap 210 of the grinding roller pair 200 forms a stop portion 300.

[0037] Preferably, see Figure 1 The feed opening 120 is a narrow feed opening and its shape corresponds to the shape of the grinding gap 210 of the grinding roller 200. Figure 2 The feed narrow opening and the grinding gap 210 are both rectangular strips.

[0038] In this embodiment, the feeding amount of the seed crystal to be ground is controlled by setting the feeding port 120 as a narrow feeding port and the shape of which corresponds to the shape of the grinding gap 210 of the grinding roller pair 200 .

[0039] Specifically, the two grinding rollers are rotatably supported on the wall of the grinding chamber 100 via bearings at both ends of the two grinding rollers along the axial direction.

[0040] Preferably, see Figure 1 and Figure 2 The two grinding rollers include a main grinding roller 220 and an auxiliary grinding roller 230 drivingly connected to the main grinding roller 220. Figure 2 The main grinding roller 220 is connected to a stopper 300 .

[0041] Specifically, see Figure 1 and Figure 2 The seed crystal roller grinding device includes an electric drive mechanism 400 such as a motor, and the electric drive mechanism 400 is configured to drive the main grinding roller 220 to rotate. Optionally, the electric drive mechanism 400 is installed on the outer wall of the grinding chamber 100.

[0042] Specifically, see Figure 2 The seed roll grinding device includes a driving gear 510 and a driven gear 520. The two ends of the main grinding roller 220 along the axial direction are coaxially connected with the driving gear 510, and the two ends of the auxiliary grinding roller 230 along the axial direction are coaxially connected with the driven gear 520. The driving gear 510 and the driven gear 520 are meshed to form a gear transmission pair 500 for realizing the transmission connection between the main grinding roller 220 and the auxiliary grinding roller 230. The gear transmission pair 500 is respectively located between the stopper 300 on the corresponding side and the body wall of the grinding chamber 100.

[0043] Specifically, see Figure 1 The seed roll grinding device includes a lower bin 600, which is connected to the feed port 120 of the grinding chamber 100. The lower bin 600 is configured to hold the granular silicon seeds to be ground, and the granular silicon seeds to be ground enter the grinding chamber 110 through the feed port 120. The cross section of the lower bin 600 perpendicular to the axial direction of the main grinding roller 220 is V-shaped.

[0044] Preferably, see Figure 1 The lower end 111 of the grinding chamber 110 is funnel-shaped, which is used to collect the ground seed crystals to the discharge port 130 to prevent the ground seed crystals from accumulating at the lower end 111 of the grinding chamber 110 .

[0045] Specifically, see Figure 1 The seed crystal roller grinding device further includes a discharge pipe 700, which is disposed below the grinding chamber 110 and communicated with the discharge port 130 of the grinding chamber 110. The discharge pipe 700 is used to discharge the ground seed crystals.

[0046] Example 2

[0047] Different from the embodiment 1 in which the auxiliary grinding roller 230 is driven by the main grinding roller 220, the two grinding rollers in this embodiment can be driven by independent motors, which are not shown in the figure. However, compared with the embodiment 1, the seed crystal roller grinding equipment in this embodiment has higher energy consumption.

[0048] The utility model provides a concept and method for a seed roll grinding device. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A seed roll grinding device, characterized in that: include: A grinding cavity (100), wherein the interior of the grinding cavity (100) is a hollow grinding chamber (110); a feed inlet (120) is provided at the top of the wall of the grinding cavity (100), and the feed inlet (120) is connected to the grinding chamber (110); A pair of grinding rollers (200) rotatably disposed in the grinding chamber (110), wherein the feed port (120) is disposed corresponding to the pair of grinding rollers (200); and a stopper (300), wherein the stopper (300) is respectively arranged on both sides of the grinding gap (210) of the grinding roller pair (200), and the stopper (300) is used to prevent the seed crystal on the grinding roller pair (200) from moving to the outside of the two ends of the grinding roller pair.

2. The seed roll grinding equipment according to claim 1, characterized in that: The grinding roller pair (200) comprises two grinding rollers; an annular stop protrusion is respectively connected to the outer peripheral wall at both ends of the axial direction of any one of the two grinding rollers, and the portion of the annular stop protrusion extending into the grinding gap (210) of the grinding roller pair (200) forms the stop portion (300).

3. The seed roll grinding equipment according to claim 1 or 2, characterized in that: The feed opening (120) is a narrow feed opening and its shape corresponds to the shape of the grinding gap (210) of the grinding pair of rollers (200).

4. The seed roll grinding equipment according to claim 2, characterized in that: The two grinding rollers include a main grinding roller (220) and an auxiliary grinding roller (230) drivingly connected to the main grinding roller (220).

5. The seed roll grinding equipment according to claim 4, characterized in that: The invention comprises an electric driving mechanism (400), wherein the electric driving mechanism (400) is configured to drive the main grinding roller (220) to rotate.

6. The seed roll grinding equipment according to claim 5, characterized in that: The invention comprises a driving gear (510) and a driven gear (520); the two ends of the main grinding roller (220) along the axial direction are respectively coaxially connected to the driving gear (510); the two ends of the auxiliary grinding roller (230) along the axial direction are respectively coaxially connected to the driven gear (520); the driving gear (510) and the driven gear (520) are meshed to form a gear transmission pair (500) for realizing the transmission connection between the main grinding roller (220) and the auxiliary grinding roller (230); the gear transmission pair (500) is respectively located between the stopper (300) on the corresponding side and the body wall of the grinding chamber (100).

7. The seed roll grinding equipment according to claim 1, characterized in that: It also includes a lower material bin (600), which is connected to the feed port (120) of the grinding chamber (100); the lower material bin (600) is configured to hold crystal seeds to be ground, and the crystal seeds to be ground enter the grinding chamber (110) through the feed port (120).

8. The seed roll grinding equipment according to claim 1, characterized in that: It comprises a discharge port (130), the discharge port (130) is provided at the bottom of the wall of the grinding cavity (100), and the discharge port (130) is connected to the grinding chamber (110).

9. The seed roll grinding equipment according to claim 8, characterized in that: The lower end (111) of the grinding chamber (110) is funnel-shaped and is used to collect the ground seed crystals to the discharge port (130).

10. The seed roll grinding equipment according to claim 9, characterized in that: It comprises a discharge pipe (700), wherein the discharge pipe (700) is arranged below the grinding chamber (110) and is communicated with the discharge port (130) of the grinding chamber (110).

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