Crushing device for preparing magnesium-aluminum composite halogen-free flame retardant

Abstract

The utility model discloses a crushing device for preparing a magnesium-aluminum composite halogen-free flame retardant. The crushing device comprises a crushing subassembly, a first grinding subassembly and a second grinding subassembly which are sequentially arranged from top to bottom, the crushing subassembly comprises a driving crushing roller and a driven crushing roller which are in meshing transmission with each other, and a gap between the driving crushing roller and the driven crushing roller is adjustable, so that the crushing subassembly is better suitable for raw material particles with different particle sizes; the first grinding subassembly comprises a first fixed grinding disc which is fixedly arranged and a first movable grinding disc which is rotationally arranged, a first main shaft is fixed at the lower end of the first movable grinding disc, and the first main shaft is driven by a first driving device; the first grinding assembly further comprises an up-down adjusting assembly, and the up-down adjusting assembly drives the first movable grinding disc to move up and down, so that the grinding gap between the first fixed grinding disc and the first movable grinding disc is adjusted. According to the utility model, materials can be ground more finely, the crushing and grinding gap can be adjusted according to the particle size of the materials, and the grinding effect is better.

Description

Technical Field

[0001] This utility model relates to a pulverizing device for preparing magnesium-aluminum composite halogen-free flame retardants, belonging to the field of pulverizing technology for halogen-free flame retardants. Background Technology

[0002] Flame retardant science and technology is a science developed to meet the needs of safe production and daily life, prevent fires, and protect people's lives and property. Flame retardants are the practical application of flame retardant technology; they are special chemical additives used to improve the combustion performance of flammable materials and are widely used in the flame retardant processing of various decorative materials. Materials processed with flame retardants can effectively prevent, delay, or terminate the spread of flames when attacked by external fire sources, thus achieving a flame-retardant effect. In the production process of magnesium-aluminum composite halogen-free flame retardants, the flame retardant raw materials need to be added to a reaction vessel for mixing and reaction. The particle size of the raw materials affects the reaction effect; therefore, the raw materials need to be pulverized before the reaction to crush large particles.

[0003] Chinese utility model patent CN222240447U discloses a pulverizing device for the production of magnesium hydroxide flame retardant. The fixed box is equipped with a first grinding roller and a second grinding roller. By turning on the first motor, the first grinding roller rotates with the rotation of the first rotating shaft to pulverize the raw material for the first time. By turning on the second motor, the second grinding roller rotates with the rotation of the second rotating shaft to pulverize the raw material for the second time. After pulverizing twice, the raw material can be pulverized more thoroughly.

[0004] However, the above-mentioned patented solutions have the following drawbacks in practical applications:

[0005] First, while the grinding method using the first and second grinding rollers can break down the material, the grinding effect is poor, and the ground material is not fine enough.

[0006] Secondly, the particle size of the raw materials to be ground varies, making it impossible to adjust the grinding gap according to the actual size of the raw materials, resulting in poor grinding effect.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] This invention addresses the shortcomings of the prior art by providing a pulverizing device for preparing magnesium-aluminum composite halogen-free flame retardants, which can grind materials more finely and adjust the gap between pulverizing and grinding according to the particle size of the materials, resulting in better grinding effect.

[0009] To solve the above technical problems, the present invention adopts the following technical solution:

[0010] A pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant includes a pulverizing section, a first grinding section, and a second grinding section arranged sequentially in an up-down manner.

[0011] The crushing unit includes an active crushing roller and a passive crushing roller that mesh with each other. The active crushing roller is driven by a drive motor. The gap between the active crushing roller and the passive crushing roller is adjustable, making it more suitable for raw material particles of different sizes.

[0012] The first grinding assembly includes a fixed first grinding disc and a rotatable first moving grinding disc. The lower end of the first moving grinding disc is fixed with a first spindle, which is driven by a first driving device. The first grinding assembly also includes an up-and-down adjustment assembly, which drives the first moving grinding disc to move up and down, thereby adjusting the grinding gap between the first fixed grinding disc and the first moving grinding disc.

[0013] Furthermore, an adjusting rod is installed at each end of the passive crushing roller shaft, the adjusting rod is threadedly connected to the passive crushing roller shaft, and a first adjusting handwheel is installed at the outer end of the adjusting rod.

[0014] Furthermore, a plurality of first material feeding plates are fixed to the lower edge of the first moving grinding disc, and an annular first material storage groove is provided around the lower side of the first moving grinding disc. The first material feeding plates are disposed in the first material storage groove, and a discharge port is provided on the first material storage groove, which is connected to the first discharge flow channel.

[0015] Furthermore, the upper and lower adjustment assembly includes an adjustment sleeve, the upper end of which is rotatably engaged with the lower surface of the first moving grinding disc via a first bearing, the inner side of which is rotatably mounted on the inner support seat via a threaded engagement, and the first main shaft is rotatably mounted on the inner side of the inner support seat via a second bearing.

[0016] Furthermore, an adjusting gear is also fitted on the outer side of the inner support base. The adjusting gear is rotatably mounted on the inner support base via a bearing. Multiple sliding rods are vertically mounted on the lower end of the adjusting sleeve. A sliding hole is vertically provided on the upper side of the adjusting gear. The sliding rods are slidably mounted in the sliding hole. The adjusting gear meshes with the driving gear for transmission. A second adjusting handwheel is fixed on the rotating shaft of the driving gear.

[0017] Furthermore, the second grinding unit includes a fixed second grinding disc and a rotatable second moving grinding disc, the lower end of which is fixedly connected to a second main shaft, and the second main shaft is driven by a second driving device.

[0018] Furthermore, a plurality of second material feeding plates are fixed to the lower edge of the second moving grinding disc, and an annular second material storage groove is provided around the lower side of the second moving grinding disc. The second material feeding plates are disposed in the second material storage groove, and a discharge port is provided on the second material storage groove, which is connected to the second discharge channel.

[0019] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0020] 1. In the crushing unit, an adjusting rod is installed at each end of the passive crushing roller shaft. According to the size of the particle size of the material to be crushed, the adjusting rod is rotated by adjusting the first adjusting handwheel, thereby moving the passive crushing roller back and forth, realizing the adjustment of the crushing gap between the active crushing roller and the passive crushing roller, so as to improve the crushing effect;

[0021] 2. The upper end of the adjusting sleeve is rotatably engaged with the lower surface of the first moving grinding disc via a first bearing, and the inner side of the adjusting sleeve is rotatably mounted on the inner support seat via a threaded engagement. Rotating the adjusting sleeve causes it to move up and down relative to the inner support seat, thereby adjusting the grinding gap between the first fixed grinding disc and the first moving grinding disc, thus making it suitable for grinding materials of different particle sizes;

[0022] 3. The second fixed grinding disc and the second moving grinding disc perform fine grinding on the material, making the material more finely ground.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the crushing unit in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the first grinding component in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the second grinding component in this utility model.

[0028] In the diagram, 1-crushing assembly, 101-active crushing roller, 102-passive crushing roller, 103-feed hopper, 104-adjusting rod, 105-first adjusting handwheel, 2-first grinding assembly, 201-first stationary grinding disc, 202-first moving grinding disc, 203-first feeding plate, 204-first bearing, 205-adjusting sleeve, 206-first storage trough, 207-inner support seat, 208-sliding rod, 209- Adjusting gear, 210-first discharge channel, 211-second bearing, 212-drive gear, 213-second adjusting handwheel, 214-first main shaft, 215-first drive device, 3-second grinding assembly, 301-second fixed grinding disc, 302-second moving grinding disc, 303-second material feeding plate, 304-second material storage trough, 305-second main shaft, 306-second drive device, 307-second discharge channel. Detailed Implementation

[0029] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0030] like Figure 1-4 As shown, this utility model provides a pulverizing device for preparing magnesium-aluminum composite halogen-free flame retardant, including a pulverizing section 1, a first grinding section 2, and a second grinding section 3 arranged sequentially in an up-down manner.

[0031] The crushing unit 1 includes an active crushing roller 101 and a passive crushing roller 102 that mesh with each other. The active crushing roller 101 is driven by a drive motor (not shown in the figure). The gap between the active crushing roller 101 and the passive crushing roller 102 is adjustable, making it more suitable for raw material particles of different sizes.

[0032] The first grinding assembly 2 includes a fixed first grinding disc 201 and a rotatable first moving grinding disc 202. The lower end of the first moving grinding disc 202 is fixed with a first spindle 214, which is driven by a first driving device 215. The first grinding assembly 2 also includes an up-and-down adjustment assembly, which drives the first moving grinding disc 202 to move up and down, thereby adjusting the grinding gap between the first fixed grinding disc 201 and the first moving grinding disc 202.

[0033] like Figure 2An adjusting rod 104 is installed at each end of the rotating shaft of the passive crushing roller 102. The adjusting rod 104 is threadedly connected to the rotating shaft of the passive crushing roller 102, and a first adjusting handwheel 105 is installed at the outer end of the adjusting rod 104. The top of the crushing unit 1 is also provided with a feed hopper 103. According to the size of the particle size of the material to be crushed, the adjusting rod 104 is rotated by adjusting the first adjusting handwheel 105, thereby moving the passive crushing roller 102 back and forth, realizing the adjustment of the crushing gap between the active crushing roller 101 and the passive crushing roller 102, so as to improve the crushing effect.

[0034] like Figure 3 Multiple first material-pushing plates 203 are fixed to the lower edge of the first moving grinding disc 202. A ring-shaped first material storage trough 206 is provided around the lower side of the first moving grinding disc 202. The first material-pushing plates 203 are disposed within the first material storage trough 206. A discharge port is provided on the first material storage trough 206, and the discharge port is connected to the first discharge channel 210. In the first grinding assembly, after the material is ground by the first fixed grinding disc 201 and the first moving grinding disc 202, it falls into the first material storage trough 206. The first material-pushing plates 203 push the material, causing it to be discharged from the discharge port of the first material storage trough 206 into the first discharge channel 210.

[0035] The up-and-down adjustment assembly includes an adjustment sleeve 205. The upper end of the adjustment sleeve 205 is rotatably engaged with the lower surface of the first moving grinding disc 202 via a first bearing 204. The inner side of the adjustment sleeve 205 is rotatably mounted on the inner support seat 207 via a threaded engagement. The first main shaft 214 is rotatably mounted on the inner side of the inner support seat 207 via a second bearing 211. Rotating the adjustment sleeve 205 causes it to move up and down relative to the inner support seat 207, thereby adjusting the grinding gap between the first fixed grinding disc 201 and the first moving grinding disc 202.

[0036] An adjusting gear 209 is also fitted on the outer side of the inner support 207. The adjusting gear 209 is rotatably mounted on the inner support 207 via a bearing. Multiple sliding rods 208 are vertically mounted on the lower end of the adjusting sleeve 205. A sliding hole is vertically provided on the upper side of the adjusting gear 209. The sliding rods 208 are slidably mounted in the sliding hole. The adjusting gear 209 meshes with the drive gear 212 for transmission. A second adjusting handwheel 213 is fixed on the rotating shaft of the drive gear 212. Rotating the second adjusting handwheel 213 drives the adjusting gear 209 to rotate through gear transmission, thereby driving the adjusting sleeve 205 to rotate, thus causing the adjusting sleeve 205 to move up and down.

[0037] like Figure 4 The second grinding unit 3 includes a fixed second grinding disc 301 and a rotatable second grinding disc 302. The lower end of the second grinding disc 302 is fixedly connected to the second spindle 305, and the second spindle 305 is driven by the second driving device 306.

[0038] Multiple second material-pushing plates 303 are fixed to the lower edge of the second moving grinding disc 302. A ring-shaped second material storage trough 304 is provided around the lower side of the second moving grinding disc 302. The second material-pushing plates 303 are disposed within the second material storage trough 304. A discharge port is provided on the second material storage trough 304, and the discharge port is connected to a second discharge channel 307. In the second grinding unit, after the material is ground by the second fixed grinding disc 301 and the second moving grinding disc 302, it falls into the second material storage trough 304. The second material-pushing plates 303 push the material, causing it to be discharged from the discharge port of the second material storage trough 304 into the second discharge channel 307.

[0039] The specific working principle of this utility model:

[0040] This utility model includes a crushing part 1, a first grinding part 2, and a second grinding part 3 arranged in a vertical order;

[0041] In the crushing unit 1, an adjusting rod 104 is installed at each end of the rotating shaft of the passive crushing roller 102. According to the size of the particle size of the material to be crushed, the adjusting rod 104 is rotated by adjusting the first adjusting handwheel 105, thereby moving the passive crushing roller 102 back and forth, realizing the adjustment of the crushing gap between the active crushing roller 101 and the passive crushing roller 102, so as to improve the crushing effect.

[0042] After being crushed by the crushing unit 1, the material falls into the first grinding unit 2. The upper end of the adjusting sleeve 205 is rotatably engaged with the lower surface of the first moving grinding disc 202 via the first bearing 204. The inner side of the adjusting sleeve 205 is rotatably mounted on the inner support seat 207 via a threaded engagement. Rotating the adjusting sleeve 205 causes it to move up and down relative to the inner support seat 207, thereby adjusting the grinding gap between the first fixed grinding disc 201 and the first moving grinding disc 202, thus making it suitable for grinding materials of different particle sizes.

[0043] After being ground by the first grinding section 2, the material falls into the second grinding section 3, where the second fixed grinding disc 301 and the second moving grinding disc 302 perform fine grinding on the material, making the material more finely ground.

[0044] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant, characterized in that: The pulverizing assembly (1), the first grinding assembly (2) and the second grinding assembly (3) are arranged in sequence from top to bottom. The driving motor drives the driving pulverizing roller (101), and the gap between the driving pulverizing roller (101) and the passive pulverizing roller (102) is adjustable, so that the device is suitable for raw material particles of different sizes. The first driving device (215) drives the first main shaft (214).

2. The pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant according to claim 1, characterized in that: The lower end of the first driving pulverizing plate (202) is fixed with a plurality of first material stirring plates (203), and the lower side of the first driving pulverizing plate (202) is provided with an annular first material storage groove (206).

3. The pulverizing device for preparing magnesium-aluminum composite halogen-free flame retardant according to claim 1, characterized in that: The upper end of the adjusting sleeve (205) is rotatably connected to the lower surface of the first driving pulverizing plate (202) through the first bearing (204), and the inner side of the adjusting sleeve (205) is rotatably arranged on the inner support base (207) through thread cooperation.

4. The pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant according to claim 3, characterized in that: The outer side of the inner support base (207) is further sleeved with an adjusting gear (209), and the adjusting gear (209) is rotatably installed on the inner support base (207) through a bearing.

5. The pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant according to claim 4, characterized in that: The lower end of the adjusting sleeve (205) is vertically provided with a plurality of sliding rods (208), and the upper side of the adjusting gear (209) is vertically provided with a sliding hole.

6. The pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant according to claim 1, characterized in that: The second driving device (306) drives the second main shaft (305).

7. The pulverizing device for preparing a magnesium-aluminum composite halogen-free flame retardant according to claim 6, characterized in that: A plurality of second raking plates (303) are fixed to the lower end edge of the second moving mill plate (302), and an annular second material storage groove (304) is arranged on the lower side of the second moving mill plate (302), the second raking plates (303) are arranged in the second material storage groove (304), and a material discharge port is arranged on the second material storage groove (304) and is connected with a second material discharge flow channel (307).

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