A raw powder grinding device

Abstract

The application discloses a raw powder grinding device, which comprises a rack and a grinding box. The grinding box is rotationally arranged on the rack, and the rotation axis of the grinding box is horizontally arranged. A plurality of grinding balls are filled in the grinding box. Along the axis direction of the grinding box, one end of the grinding box is provided with a feeding pipe, and the other end of the grinding box is provided with a discharging pipe. A driving module connected with the grinding box is further arranged on the rack. The grinding device further comprises a material pumping module and a controller. The material pumping module is communicated with the discharging pipe through a first rotary joint. The feeding pipe is further connected with a material conveying pipe through a second rotary joint. An air inlet pipe is arranged in the grinding box and inserted into the second rotary joint. The controller is electrically connected with the driving module and the material pumping module. When the application is used, the material can continuously enter the grinding box, and the ground raw powder is suspended in the air and finally pumped out by the material pumping module, so that the continuous feeding and discharging operation is realized, and the grinding efficiency of the raw powder is improved.

Description

Technical Field

[0001] This application relates to the technical field of gypsum board production equipment, specifically to a raw powder grinding device. Background Technology

[0002] Starch is an important ingredient in gypsum board. During the production of gypsum board, it is necessary to grind the lumpy starch into powder of a certain particle size. In the existing technology, the above operation process is generally achieved by a grinding machine. However, in actual production, the grinding machine can only feed the material once. After grinding is completed, the material is discharged and then fed again to complete the secondary processing, which is not conducive to improving the grinding efficiency of the starch. Utility Model Content

[0003] The main objective of this application is to provide a raw powder grinding apparatus, which aims to solve the problem of low grinding efficiency in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A raw flour grinding apparatus, comprising a frame;

[0006] A grinding box is rotatably mounted on the frame, and the axis of rotation of the grinding box is horizontal; the grinding box is filled with a plurality of grinding balls; along the axial direction of the grinding box, a feed pipe is provided at one end of the grinding box, and a discharge pipe is provided at the other end;

[0007] A drive module is mounted on the frame and is poweredly connected to the grinding chamber.

[0008] A material extraction module is connected to the discharge pipe via a first rotary joint; the feed pipe is also connected to a conveying pipe via a second rotary joint.

[0009] An air intake pipe, which passes through the second rotary joint and is inserted into the grinding chamber;

[0010] The controller is electrically connected to both the drive module and the material extraction module.

[0011] Optionally, several layers of grinding teeth are also provided on the inner wall of the grinding box around the axis of the grinding box, with any two adjacent layers of grinding teeth being staggered.

[0012] Optionally, the drive module includes a drive motor and a drive gear connected by power, and a drive gear ring is fitted on the outer surface of the grinding box, the drive gear ring meshing with the drive gear.

[0013] Optionally, a support frame is provided on the frame along the length direction of the frame, and a plurality of support rollers are provided on each support frame. Along the axial direction of the grinding box, the grinding box is provided with a plurality of limiting grooves corresponding to each support frame, and each support roller on each support frame is respectively engaged in the corresponding limiting groove.

[0014] Optionally, the material extraction module includes a material extraction fan, the inlet end of which is connected to the first rotary joint through a material extraction pipe, and the outlet end of which is connected to a buffer discharge box through a discharge pipe.

[0015] Optionally, along the length of the buffer discharge box, one end of the buffer discharge box is connected to the discharge pipe, and the other end is provided with an exhaust port, and a filter screen is provided inside the exhaust port; the bottom of the buffer discharge box is also provided with a conical material gathering cover connected thereto, and a discharge auger is provided at the bottom of the material gathering cover.

[0016] Optionally, the first rotary joint includes a connecting pipe and a material extraction box that are interconnected. The connecting pipe is rotatably connected to the discharge pipe through a rolling bearing, and the discharge pipe is connected to the material extraction box. Along the axis of the connecting pipe, several sealing rings are provided at both ends of the connecting pipe.

[0017] Optionally, a screen is provided at the outlet end of the discharge pipe, and a cleaning brush for cleaning the screen is installed inside the material extraction box.

[0018] Optionally, the second rotary joint includes a sleeve, which is coaxially sleeved on the outer circumferential surface of the feed pipe. A rolling bearing is provided between the sleeve and the feed pipe. Several sealing rings are provided at both ends of the sleeve along its axis.

[0019] Optionally, a one-way check valve is also provided at the inlet end of the air intake pipe, which opens toward the grinding box.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application includes a frame and a grinding chamber, the grinding chamber being rotatably mounted on the frame with its rotation axis horizontally positioned; the grinding chamber is filled with a plurality of grinding balls; along the axial direction of the grinding chamber, one end of the grinding chamber is provided with a feed pipe, and the other end is provided with a discharge pipe; a drive module connected to the grinding chamber is also provided on the frame; the grinding device further includes a material extraction module and a controller; the material extraction module is connected to the discharge pipe via a first rotary joint; the feed pipe is also connected to a conveying pipe via a second rotary joint, and the second rotary joint is also provided with an air inlet pipe inserted into the grinding chamber; the controller is electrically connected to both the drive module and the material extraction module.

[0022] In use, the material to be ground enters the grinding box through the feed pipe. The drive module controls the grinding box to rotate continuously. During the rotation, the grinding balls are continuously raised to a certain height and then fall freely to the bottom of the grinding box and collide with the material to grind the material. The raw powder with small particle size will be suspended in the grinding box in powder form. At this time, the small powder particles after grinding can be continuously extracted from the grinding box by the material extraction module to achieve material discharge.

[0023] Compared with the prior art, the grinding device described in this application realizes continuous feeding and continuous discharge of materials, thereby maximizing the grinding efficiency of raw powder. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a raw flour milling apparatus provided in Embodiment 1 of this application;

[0025] Figure 2 An exploded view of a raw flour milling apparatus provided in Embodiment 1 of this application;

[0026] Figure 3 A cross-sectional view of a raw flour milling apparatus provided in Embodiment 1 of this application;

[0027] Reference numerals: 1-Frame, 2-Grinding box, 3-Grinding ball, 4-Feed pipe, 5-Discharge pipe, 6-Pulling module, 7-First rotary joint, 8-Second rotary joint, 9-Conveying pipe, 10-Air inlet pipe, 11-Controller, 12-Grinding teeth, 13-Drive motor, 14-Drive gear, 15-Drive gear ring, 16-Support frame, 17-Support roller, 18-Limiting groove, 19-Pulling fan, 20-Pulling pipe, 21-Discharge pipe, 22-Buffer discharge box, 23-Exhaust port, 24-Filter screen, 25-Conical material gathering cover, 26-Discharge auger, 27-Screen, 28-Cleaning brush, 29-One-way check valve, 701-Connecting pipe, 702-Pulling box, 703-Rolling bearing, 704-Sealing ring, 801-Sleeve pipe.

[0028] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Implementation Method 1

[0034] Reference Figures 1 to 3 This embodiment is an optional embodiment of this application, which discloses a raw flour grinding device, including a frame 1, and bearing seats are provided at both ends of the frame 1 along the length direction of the frame 1.

[0035] Meanwhile, several support frames 16 are sequentially arranged on the two bearing seat brackets. Each support frame 16 has a V-shaped groove on its top surface, and several support rollers 17 are rotatably arranged on both sides of the V-shaped groove.

[0036] The grinding device also includes a grinding box 2, which is cylindrical in shape. Several layers of grinding teeth 12 are arranged inside the grinding box 2. Along the axis of the grinding box 2, the grinding teeth 12 in each layer are arranged sequentially, and any two adjacent layers of grinding teeth 12 are staggered. Several grinding balls 3 are also filled inside the grinding box 2.

[0037] The grinding teeth 12 effectively increase the intensity of the collision between the grinding balls 3 and the material. At the same time, the sharp edges of the grinding teeth 12 are also conducive to quickly crushing the material, thereby improving the grinding efficiency.

[0038] Along the axis of the grinding box 2, a feed pipe 4 is provided at one end of the grinding box 2, and a discharge pipe 5 is provided at the other end. The feed pipe 4 and the discharge pipe 5 are respectively rotatably connected to the bearing seat on the same side.

[0039] After installation, the outer circumferential surface of the grinding box 2 is tightly fitted with each of the supporting rollers 17.

[0040] The above measures can effectively improve the overall support of the grinding box 2. After long-term operation, the middle part of the grinding box 2 will collapse, thus improving the service life of the equipment.

[0041] Secondly, the wear on the outer circumference of the grinding box 2 can be effectively reduced by supporting the roller 17;

[0042] Furthermore, along the axial direction of the grinding box 2, the grinding box 2 is provided with a plurality of limiting grooves 18 corresponding to each of the support frames 16, and each of the support rollers 17 on each of the support frames 16 is respectively inserted into the corresponding limiting groove 18.

[0043] The cooperation between the limiting groove 18 and the supporting roller 17 can help to limit the movement of the grinding box 2 axis, thus ensuring the structural stability and reliability of the grinding box 2.

[0044] Furthermore, both the feed pipe 4 and the discharge pipe 5 are hollow shafts to connect the internal space of the grinding box 2; wherein the discharge pipe 5 is connected to the material extraction module 6 through the first rotary joint 7, and the feed pipe 4 is connected to the material conveying pipe 9 through the second rotary joint 8.

[0045] The first rotary joint 7 includes a connecting pipe 701 and a material extraction box 702 that are interconnected. The connecting pipe 701 is rotatably connected to the discharge pipe 5 through a rolling bearing 703. The discharge pipe 5 is connected to the material extraction box 702. Along the axis of the connecting pipe 701, a plurality of sealing rings 704 are provided at both ends of the connecting pipe 701.

[0046] That is, the discharge pipe 5 is coaxially sleeved inside the connecting pipe 701, and a plurality of rolling bearings 703 are provided between the discharge pipe 5 and the connecting pipe 701. Along the axial direction of the discharge pipe 5, a plurality of sealing rings 704 are provided at both ends of the connecting pipe 701.

[0047] Meanwhile, the grinding device also includes a material extraction module 6, which includes a material extraction fan 19. The inlet end of the material extraction fan 19 is connected to the material extraction box 702 through a material extraction pipe 20, and its outlet end is connected to a discharge box through a discharge pipe 21.

[0048] A screen 27 is provided at the outlet end of the discharge pipe 5, and a cleaning brush 28 for cleaning the screen 27 is installed in the material extraction box 702.

[0049] The first rotary joint 7 enables the separation of the grinding box 2 from the material extraction module 6, ensuring that the grinding box 2 can be stably rotated without interfering with the material extraction module, thus ensuring the stable operation of the equipment.

[0050] Meanwhile, the screen 27 can separate the material particles to prevent unqualified raw powder from being discharged. At the same time, the cleaning brush 28 can continuously clean the screen 27 during operation to prevent the screen 27 from clogging and ensure the continuous and stable operation of the equipment.

[0051] Furthermore, along the length of the buffer discharge box 22, one end of the buffer discharge box 22 is connected to the discharge pipe 21, and the other end is provided with an exhaust port 23, and a filter screen 24 is provided inside the exhaust port 23; a conical material gathering cover 25 communicating with the bottom of the buffer discharge box 22 is also provided, and a discharge auger is provided at the bottom of the material gathering cover.

[0052] When air containing raw material powder enters the buffer discharge box 22, the air velocity will gradually decrease due to the increase in flow area. The heavier raw material powder will gradually settle and fall, eventually entering the bottom through the conical collection hood and being discharged through the discharge auger 26; while the air is discharged through the exhaust port 23 and undergoes a final filtration through the filter screen 24.

[0053] Compared with existing technologies, the above technical solution achieves natural separation of air and materials, effectively improving the stability of equipment operation; and since the air discharge and material discharge are in two completely different directions, it can also effectively improve the material settling rate, thereby avoiding the accumulation of materials in the grinding box 2, which is conducive to improving grinding efficiency.

[0054] Furthermore, the second rotary joint 8 includes a sleeve 801, which is coaxially sleeved on the outer circumferential surface of the feed pipe 4. A rolling bearing 703 is provided between the sleeve 801 and the feed pipe 4. Along the axis of the sleeve 801, a plurality of sealing rings 704 are provided at both ends of the sleeve 801.

[0055] That is, the feed pipe 4 is coaxially inserted into the sleeve pipe 801, and a number of rolling bearings 703 are provided between the sleeve pipe 801 and the feed pipe 4. Each rolling bearing 703 is arranged sequentially along the axial direction of the sleeve pipe 801; a number of sealing rings 704 are provided at both ends of the sleeve pipe 801.

[0056] The sleeve 801 is also connected to a material conveying pipe 9 and an air inlet pipe 10, wherein the material conveying pipe 9 and the air inlet pipe 10 both extend into the grinding box 2;

[0057] The feed pipe 9 is used to transport the raw powder to be ground. At the same time, a one-way check valve 29 is also provided at the inlet end of the air inlet pipe 10. The one-way check valve 29 opens to the side of the grinding box 2.

[0058] Furthermore, a drive module and a controller 11 are also provided on the frame 1. The drive module includes a drive motor 13 and a drive gear 14 that are connected to the power source. A drive gear ring 15 is fitted on the outer surface of the grinding box 2. The drive gear ring 15 meshes with the drive gear 14.

[0059] The controller 11 includes an industrial control computer and a PLC that are connected in communication. The PLC is electrically connected to the drive motor 13 and the suction fan 19 respectively to adjust their speed.

[0060] During use, the raw powder to be ground is continuously conveyed into the grinding box through the conveying pipe. The grinding box rotates continuously under the control of the drive module, thereby driving the grinding balls and materials inside the box to continuously roll, mix and stir. Since the grinding balls are in a neutral state, when the grinding balls move to a high position, under the action of their own gravity, the grinding balls will fall freely to the bottom of the grinding box and collide with the grinding teeth and / or the raw powder to be ground, thereby realizing the crushing and grinding of the material.

[0061] Since the grinding box is always in motion, the raw powder material after grinding is small in size. During the continuous stirring process, the raw powder will be suspended to the top of the grinding box. At this time, the air and raw powder can be extracted by the suction fan and finally discharged after separation in the buffer discharge box. Meanwhile, the raw powder to be ground can also be continuously introduced through the conveying pipe.

[0062] The intake pipe can continuously replenish the lost air in the grinding chamber, ensuring stable air pressure.

[0063] Compared with the prior art, the grinding device described in this application realizes continuous feeding and continuous discharge of materials, thereby maximizing the grinding efficiency of raw flour.

[0064] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A raw flour grinding apparatus, characterized in that, Includes rack (1); Grinding box (2), the grinding box (2) is rotatably mounted on the frame (1), and the rotation axis of the grinding box (2) is horizontal; the grinding box (2) is filled with a number of grinding balls (3); along the axial direction of the grinding box (2), one end of the grinding box (2) is provided with a feed pipe (4), and the other end is provided with a discharge pipe (5); A drive module is mounted on the frame (1) and is poweredly connected to the grinding box (2); The material extraction module (6) is connected to the discharge pipe (5) through a first rotary joint (7); the feed pipe (4) is also connected to the conveying pipe (9) through a second rotary joint (8); An air intake pipe (10) is inserted into the grinding box (2) through the second rotary joint (8); The controller (11) is electrically connected to the drive module and the material extraction module (6).

2. The raw flour grinding apparatus according to claim 1, characterized in that, Around the axis of the grinding box (2), several layers of grinding teeth (12) are also provided on the inner wall of the grinding box (2), and any two adjacent layers of grinding teeth (12) are staggered.

3. The raw flour grinding apparatus according to claim 1, characterized in that, The drive module includes a drive motor (13) and a drive gear (14) connected to the power supply. A drive gear ring (15) is fitted on the outer surface of the grinding box (2), and the drive gear ring (15) meshes with the drive gear (14).

4. The raw flour grinding apparatus according to claim 1, characterized in that, Along the length of the frame (1), a support frame (16) is provided on the frame (1), and a plurality of support rollers (17) are provided on each support frame (16). Along the axial direction of the grinding box (2), the grinding box (2) is provided with a plurality of limiting grooves (18) corresponding to each support frame (16), and each support roller (17) on each support frame (16) is respectively inserted into the corresponding limiting groove (18).

5. The raw flour grinding apparatus according to claim 1, characterized in that, The material extraction module (6) includes a material extraction fan (19). The inlet end of the material extraction fan (19) is connected to the first rotary joint (7) through a material extraction pipe (20), and its outlet end is connected to a buffer discharge box (22) through a discharge pipe (21).

6. The raw flour grinding apparatus according to claim 5, characterized in that, Along the length of the buffer discharge box (22), one end of the buffer discharge box (22) is connected to the discharge pipe (21), and the other end is provided with an exhaust port (23). A filter screen (24) is provided inside the exhaust port (23). A conical material gathering cover (25) communicating with the bottom of the buffer discharge box (22) is also provided, and a discharge auger is provided at the bottom of the material gathering cover.

7. The raw flour grinding apparatus according to claim 1, characterized in that, The first rotary joint (7) includes a connecting pipe (701) and a material extraction box (702) that are interconnected. The connecting pipe (701) is rotatably connected to the discharge pipe (5) through a rolling bearing (703). The discharge pipe (5) is connected to the material extraction box (702). Along the axis of the connecting pipe (701), several sealing rings (704) are provided at both ends of the connecting pipe (701).

8. The raw flour grinding apparatus according to claim 7, characterized in that, The outlet end of the discharge pipe (5) is provided with a screen (27), and the material extraction box (702) is equipped with a cleaning brush (28) for cleaning the screen (27).

9. A raw flour grinding apparatus according to claim 1, characterized in that, The second rotary joint (8) includes a sleeve (801), which is coaxially sleeved on the outer circumferential surface of the feed pipe (4). A rolling bearing (703) is provided between the sleeve (801) and the feed pipe (4). Along the axis of the sleeve (801), several sealing rings (704) are provided at both ends of the sleeve (801).

10. A raw flour grinding apparatus according to claim 1, characterized in that, The inlet end of the air intake pipe (10) is also provided with a one-way check valve (29), which opens toward the grinding box (2).

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