CN102872946A - Horizontal bead grinding machine having full zirconia ceramic grinding inner cavity and driving plate - Google Patents

Abstract

The invention relates to a horizontal bead mill with a full zirconia ceramic grinding inner cavity and a dial. The bead mill includes a frame, a grinding unit, a mechanical diaphragm pump, a cooling tank and connecting pipelines, and the grinding unit includes a grinding chamber, a mechanical seal seat, a cavity frame, a main shaft, a propulsion screw, a rigid coupling, an electric motor and Mechanical seal; the mechanical seal seat is fixed on the motor flange with screws, the moving ring of the mechanical seal is fixed on the main shaft with a pin, the static ring of the mechanical seal is fixed on the mechanical seal seat, and the mechanical seal forms a cavity at both ends of the main shaft; the cavity The frame is set on the outside of the propulsion screw, and the motor drives the main shaft to run through a rigid coupling. power. The invention can effectively enhance the wear resistance of the whole bead mill equipment, improve the quality of the equipment, prolong the service life of the equipment and reduce the production cost.

Description

A horizontal bead mill with full zirconia ceramic grinding inner cavity and dial

technical field

The invention relates to a horizontal bead mill, in particular to a horizontal bead mill with a full zirconia ceramic grinding inner wall and a dial.

Background technique

The commonly used horizontal bead mill is a machine for grinding materials with several rotating grinding discs (or levers or pins) and various grinding bodies in a flat fixed cylindrical grinding chamber. The grinding medium is usually Ottawa sand, glass beads, steel balls or ceramic beads, etc. The materials are subjected to comprehensive effects such as strong shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulence in the grinding inner cavity, and the filter screens with a specific gap set at both ends are forced to filter and other comprehensive effects, so that the incompatible The solid phase, liquid phase, and gas phase are emulsified evenly and finely under the combined action of corresponding mature technology and appropriate amount of additives. After high-frequency cycles, a product with stable fineness is finally obtained.

The horizontal bead mill in general application is made of stainless steel, hard alloy steel or lined with polyurethane, zirconia ceramics and other materials due to its cylindrical grinding chamber and rotating grinding disc (or lever), and the filter screen is made of carbon steel, stainless steel, etc. And other materials, through production practice, its wear resistance is not good and the pollution to the material is affected by the structure, the service life cycle is not ideal, especially the service life of the filter screen is particularly limited. In addition, although some common horizontal bead mills are equipped with booster impellers on the main shaft, when grinding materials with high viscosity, the working resistance of the filter screen is relatively large, resulting in low production efficiency. Based on the above problems, the present invention aims to provide a new technical solution capable of solving the above technical problems.

Contents of the invention

The purpose of the present invention is to provide a horizontal bead mill with a full zirconia ceramic grinding inner cavity and a dial, which can enhance the wear resistance of the horizontal bead mill and prolong its service life.

The purpose of the present invention is achieved like this:

A horizontal bead mill with a full zirconia ceramic grinding inner cavity and a dial, including a frame, a grinding unit, a mechanical diaphragm pump, a cooling tank and connecting pipelines. The frame is divided into floor type and desktop type. The grinding unit and the mechanical diaphragm pump are installed on the frame base in parallel. The driving parts of the grinding unit and the mechanical diaphragm pump are located in the inner cavity of the machine cover of the frame, and the working head parts are exposed. The cooling tank is installed on the frame base in front of the mechanical diaphragm pump body, and the cooling tank is equipped with a cooling jacket. The connecting pipeline connects the grinding unit, the mechanical diaphragm pump and the inlet and outlet of the cooling tank in series. The pipeline connection joints are sanitary quick-connects for quick connection operation and cleaning. There are control buttons on the upper left or right corner of the machine cover panel.

The grinding unit includes a grinding chamber, a mechanical seal seat, a chamber frame, a main shaft, a propulsion screw, a rigid coupling, an electric motor and a mechanical seal. The motor transmits torque and speed to the main shaft through a rigid coupling, and the screw fixes the mechanical seal seat on the motor flange. The moving ring of the mechanical seal is locked on the main shaft with a pin, and the static ring of the mechanical seal is fixed on the mechanical seal seat. The mechanical seal forms a cavity at both ends of the main shaft. The cavity frame is set outside the propulsion screw. The motor drives the main shaft to run through a rigid coupling. Powers the zirconia seal wheel and dial in the grinding chamber. The propulsion screw rotates with the main shaft through the key. When the propulsion screw pushes the material to move to the grinding chamber, it also makes the material take away part of the heat generated by the friction of the sealing surface of the mechanical seal. The screw fixes the inlet on the mechanical seal seat. The inlet is equipped with a cooling water jacket, which is used to take away most of the heat generated by the friction of the sealing surface of the mechanical seal. The inlet connects the mechanical seal seat with the grinding chamber, and the inlet joint is a sanitary quick-connect joint.

The grinding chamber is made of zirconia material, and is composed of an inlet filter, an inlet, a sealing wheel, a shaft sleeve, a grinding cylinder, a dial, a sheath, a gasket, a feeding port seat and an outlet filter. The sealing wheel, the shaft sleeve and the dial are radially fixed to the main shaft through the key. Screws with zirconia material sheaths and Teflon washers are used to axially fix the sealing wheel, bushing and dial to the main shaft through keys. The high-speed rotation of the dial and the main shaft brings energy to the irregular movement of the grinding medium, which makes the material subject to the combined effects of strong shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulence, so that the immiscible solid phase, liquid phase, etc. The phase and gas phase are emulsified evenly and finely in an instant under the joint action of corresponding processes and appropriate amount of additives. After high-frequency cycles, a product with stable fineness is finally obtained.

The sealing wheel made of zirconia material, the inlet filter screen, the grinding cylinder, the outlet filter screen, the screws with zirconia material sheath, the dial and the shaft sleeve constitute a sealed full zirconia grinding inner cavity. The zirconia dial is a plate structure, and the distance between the dials is adjusted by a shaft sleeve. It has a certain thickness, generally 10mm to 20mm, and the axial shape diagram is a "cross" shape or a plum blossom shape. There is a certain gap between the sealing wheel and the inlet filter, which is generally 0.1mm to 0.8mm, which can increase the effective filtration area through a small amount of material, and at the same time, radially divert the material sent to the grinding chamber by the propulsion screw to improve the efficiency of the inlet filter. Material passing efficiency. The chamber frame is fixed on the mechanical seal seat, encircled by the feeding port seat, and plays a role of supporting, positioning and protecting the full zirconia grinding chamber. The cavity frame is equipped with a cooling water jacket to take away the heat generated by the working head parts. The outlet is on the top of the chamber frame, the outlet connector is a sanitary quick-connect connector, the chamber frame is equipped with a discharge port and a cleaning port is located at the bottom of the chamber frame, the feeding port seat is fixed at the front end of the grinding unit, and the screw cap type feeding port On the front side of the feed port seat.

The imported filter screen is composed of zirconia sealing end plate, gap adjustment pad, zirconia spacer plate and zirconia bottom plate. The gap adjustment pad and zirconia spacer plate are evenly stacked to form the required After clearing the gap, screw it to the right end of the cavity frame. The zirconia sealing end plate and the sealing wheel move relative to each other in a certain gap. On the one hand, a small amount of material passes through, and on the other hand, the material pumped to the grinding chamber is forced to divert to reduce the impact of the zirconia spacer plate during material transportation. The gap adjustment pad is used to adjust the gap of the filter screen. There are three options for its material: stainless steel, alloy steel and zirconia. The zirconia spacer is the main component of the filter screen, and the number is 5 to 12 pieces. The specific equipment is related to the filter area. The zirconia bottom plate is located at the bottom of the inlet filter screen, which plays the role of positioning, supporting and fixing.

The outlet filter is composed of zirconia plus bead port end plate, gap adjustment pad, zirconia spacer plate and zirconia bottom plate. The bottom of the zirconia plus bead mouth end plate and the zirconia bottom plate are evenly stacked by gap adjustment pads and zirconia spacers to form the required gap, and then screwed to the left end of the cavity frame. The opening of the end plate of the zirconia feeding port corresponds to the opening of the feeding port seat, and plays the role of positioning, supporting and fixing. The gap adjustment pad is used to adjust the gap of the filter screen, and its material has three options: stainless steel, alloy steel and zirconia. The zirconia spacer is an integral part of the filter screen, and its number is 5 to 12 pieces. The specific equipment is related to the filter area. The zirconia bottom plate is located at the bottom of the inlet filter screen and plays a fixed role.

The present invention provides a horizontal bead mill with a full zirconia ceramic grinding cavity and a dial. The bead mill grinding cavity adopts all zirconia ceramic materials, and the zirconia dial adopts a special shape, which can effectively strengthen the entire bead mill. Improve the wear resistance of the equipment, improve the quality of the equipment, prolong the service life of the equipment and reduce the production cost.

Description of drawings

Fig. 1 horizontal bead mill structural diagram provided by the present invention;

The side view of the horizontal bead mill provided by the present invention in Fig. 2;

Figure 3 is a structural diagram of the grinding unit of the horizontal bead mill provided by the present invention;

Fig. 4 is a structural diagram of the grinding chamber of the grinding unit of the horizontal bead mill provided by the present invention;

Fig. 5 Axial diagram of the zirconia dial in the grinding chamber of the grinding unit of the horizontal bead mill;

Fig. 6 Schematic diagram of the zirconia inlet filter screen in the grinding chamber of the grinding unit of the horizontal bead mill;

Fig. 7 Axial view of the zirconia inlet filter screen in the grinding chamber of the grinding unit of the horizontal bead mill;

Figure 8 is an axial schematic diagram of the zirconia partition plate of the inlet filter mesh of the grinding unit of the horizontal bead mill;

The schematic diagram of the zirconia outlet filter screen of the grinding chamber of the grinding unit of the horizontal bead mill shown in Fig. 9;

Fig. 10 Axial view of the zirconia outlet filter screen of the grinding chamber of the grinding unit of the horizontal bead mill.

specific implementation plan

The content proposed by the present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1 and Figure 2 show the overall structure of the horizontal bead mill with full zirconia ceramic grinding inner cavity and dial proposed by the present invention. The horizontal bead mill with full zirconia ceramic grinding inner cavity and dial includes frame 1, grinding unit 2, mechanical diaphragm pump 4, cooling tank 5 and connecting pipeline 3. There are two types of racks: floor-standing and desktop. Figure 1 shows a desktop rack. The grinding unit 2 and the mechanical diaphragm pump 4 are installed on the base of the frame in parallel. The driving parts of the grinding unit 2 and the mechanical diaphragm pump 4 are all located in the inner chamber of the machine cover of the frame. The working head parts are exposed, which is convenient for operation. Separated from materials etc. The cooling tank 5 is installed on the frame base in front of the mechanical diaphragm pump 4, and the cooling tank 5 is equipped with a cooling jacket. The connecting pipeline 3 connects the inlet and outlet of the grinding unit 2, the mechanical diaphragm pump 4 and the cooling tank 5 in series. The joints of the pipeline connection 3 are all hygienic quick-connects for quick connection operation and cleaning. The upper left or right corner of the hood of the rack The corner is provided with a control button panel.

The grinding unit 2 includes a grinding chamber 28, a mechanical seal seat 24, a cavity frame 29, a main shaft 22, a propulsion screw 26, a rigid coupling 23, a motor 21 and a mechanical seal 25, the structure of which is shown in FIG. 3 . The motor 21 transmits the torque and rotational speed to the main shaft 22 through the rigid coupling 23, and the screw fixes the mechanical seal seat 24 on the motor flange. The moving ring of the mechanical seal 25 is locked on the main shaft 22 with a pin, and the static ring of the mechanical seal 25 is fixed on the mechanical seal seat 24 . The mechanical seal 25 forms a cavity at both ends of the main shaft 22, and the cavity frame 29 is arranged on the outside of the propulsion screw 26. The motor 21 drives the main shaft 22 to run through the rigid coupling 23, and the propulsion screw 26 rotates together with the main shaft 22 through a key, and the propulsion screw 26 pushes the material to move to the grinding chamber 28, and also makes the material take away a part of the heat generated by the friction of the sealing surface of the mechanical seal 25, and the screw fixes the inlet on the mechanical seal seat 24. The inlet is equipped with a cooling water jacket, which is used to take away most of the heat generated by the friction of the sealing surface of the mechanical seal 25. The inlet connects the mechanical seal seat 24 with the grinding chamber, and the inlet connection is a sanitary quick connector.

Grinding chamber 28 is made of zirconia material, consisting of inlet filter 2801, inlet 2802, sealing wheel 2803, shaft sleeve 2805, grinding cylinder 2806, dial 2808, sheath 2809, gasket 2810, feeding port seat 2811 and outlet filter 2812 Its structure is shown in Figure 4. The screw with the sheath, plus the polytetrafluoroethylene gasket will advance the screw rod 26, the sealing wheel 2803, the axle sleeve 2805, the dial 2808 and fix the axial direction of the main shaft through the key. The high-speed rotation of the dial 2803 and the main shaft brings energy to the irregular movement of the grinding medium, and the material is subjected to comprehensive effects such as strong shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulent flow, so that the immiscible solid phase, The liquid phase and gas phase are emulsified evenly and finely in an instant under the joint action of corresponding processes and appropriate amount of additives, and after high-frequency cycles, a product with stable fineness is finally obtained.

The sealing wheel made of zirconia material, the inlet filter screen, the grinding cylinder, the outlet filter screen, the screw with zirconia material sheath, the dial and the shaft sleeve constitute a closed all-zirconia grinding chamber. The zirconia dial has a certain thickness, and the axial shape diagram is a "cross" shape (as shown in Figure 5) or a plum blossom shape. Compared with the rod pin, the superiority of the service life is more obvious. There is a certain gap between the sealing wheel and the inlet filter, which is generally 0.1mm to 0.8mm, which can increase the effective filtration area through a small amount of material, and at the same time, radially divert the material sent to the grinding chamber by the propulsion screw to improve the efficiency of the inlet filter. Material passing efficiency. The chamber frame is fixed on the mechanical seal seat, encircled by the feeding port seat, and plays a role of supporting, positioning and protecting the full zirconia grinding chamber. The cavity frame is equipped with a cooling water jacket to take away the heat generated by the working head parts. The outlet is on the top of the chamber frame, the outlet connector is a sanitary quick-connect connector, the chamber frame is equipped with a discharge port and a cleaning port is located at the bottom of the chamber frame, the feeding port seat is fixed at the front end of the grinding unit, and the screw cap type feeding port On the front side of the feed port seat.

The inlet filter consists of a zirconia sealing end plate 28011, a gap adjustment pad 28012, a zirconia spacer plate 28013 and a zirconia bottom plate 28014, and its structure is shown in Figure 6 and Figure 7. The zirconia sealing end plate and the sealing wheel move relative to each other in a certain gap. On the one hand, a small amount of material passes through, and on the other hand, the material pumped to the grinding chamber is forced to divert to reduce the impact of the zirconia spacer plate during material transportation. The gap adjustment pad is used to adjust the gap of the filter screen. There are three options for its material: stainless steel, alloy steel and zirconia. The zirconia spacer is the main body of the filter screen (the axial view is shown in Figure 8), and the number is 5 to 12. The specific equipment is related to the filter area. The zirconia bottom plate is located at the bottom of the inlet filter screen, which plays the role of positioning, supporting and fixing.

The outlet filter is composed of zirconia plus bead mouth end plate 28121, gap adjustment pad 28122, zirconia spacer plate 28123 and zirconia bottom plate 28124, and its structure is shown in Figure 9 and Figure 10. The opening of the end plate of the zirconia feeding port corresponds to the opening of the feeding port seat, and plays the role of positioning, supporting and fixing. The gap adjustment pad is used to adjust the gap of the filter screen, and its material has three options: stainless steel, alloy steel and zirconia. The zirconia spacer is a component of the filter screen (as shown in Figure 8 in the axial view), and its number is 5 to 12 pieces, and the specific equipment is related to the filter area. The zirconia bottom plate is located at the bottom of the inlet filter screen and plays a fixed role.

After the equipment is started and debugged, the screened grinding medium is added, and its filling amount, particle size and material can be determined according to the user's product quality requirements. The recommended coefficient of the filling amount (filling volume) of the grinding medium is about 85% of the effective volume of the cylinder, and the optimal coefficient should be determined according to the specific process conditions. If the discharge temperature is too high, the filling amount should be reduced; if the discharge temperature is too low, the filling amount should be appropriately increased in order to improve the grinding effect. The high and low discharge temperature is closely related to the temperature and consumption of cooling water, but the filling amount of the medium is also a factor that cannot be ignored. Grinding media will be worn and broken during use, so that the filling coefficient will continue to decline, and should be replenished and replaced in due course. When replacing, the broken and incomplete parts should be removed by screening method, and the corresponding new media should be added. It is worth noting that the grinding medium is susceptible to wear during its operation. When the quality of the material decreases and the operating current value of the host machine decreases, it indicates that the grinding medium is severely worn and the grinding medium needs to be replenished. When the amount of supplemented grinding media exceeds 50% of the first input amount, all of them should be replaced, and then new ones should be put in again. If necessary, the replaced grinding media can be cleaned and screened, and the qualified ones can be reserved for use to reduce Cost of production.

When using the machine for the first time, since there is a protective film of grease on the inner cavity of the full zirconia ceramic grinding, the dial and the connecting pipeline, etc., it should be cleaned. The cleaning method is to put an appropriate amount of paint or solvent into the cylinder for circulation, and the main engine can run intermittently and slightly to reduce the resistance of the cleaning fluid. After two or three minutes of this cycle, unscrew the discharge valve, release the cleaning solution in the cavity, and repeat it again. Do not wash or soak in solvent for a long time, otherwise the grinding medium will be damaged or the sealing ring will leak.

When grinding some products that are easy to dry and have strong permeability, the material system should be cleaned immediately after each batch of material is ground. If it is not cleaned in time, the material will dry out around the inlet filter, outlet filter and mechanical seal. , resulting in clogging of the filter screen and failure of the sealing ring.

Horizontal bead mill with full zirconia ceramic grinding cavity and dial, the bead mill grinding chamber is made of all zirconia ceramic materials, and the zirconia dial adopts a special shape, which can effectively enhance the wear resistance of the entire bead mill equipment sex and longevity.

Claims (13)

1. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial, including a frame, a grinding unit, a mechanical diaphragm pump, a cooling tank and connecting pipelines, the grinding unit and the mechanical diaphragm pump are installed in parallel on the machine On the base of the frame, the driving parts of the grinding unit and the mechanical diaphragm pump are located in the inner cavity of the frame cover, the working head parts are exposed outside the inner cavity of the frame cover, and the cooling tank is installed on the frame base in front of the mechanical diaphragm pump body , the connecting pipeline connects the grinding unit, the mechanical diaphragm pump and the inlet and outlet of the cooling tank in series, and it is characterized in that: the grinding unit includes a grinding chamber, a mechanical seal seat, a cavity frame, a main shaft, a propulsion screw, and a rigid coupling, Motor and mechanical seal; the mechanical seal seat is fixed on the motor flange with screws, the moving ring of the mechanical seal is fixed on the main shaft with a pin, the static ring of the mechanical seal is fixed on the mechanical seal seat, and the mechanical seal forms a cavity at both ends of the main shaft; The chamber frame is set on the outside of the propulsion screw, and the motor drives the main shaft to run through a rigid coupling. The disk provides power. 2. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 1, characterized in that: the grinding cavity is made of zirconia material, and is made of imported filter screen, imported , a sealing wheel, a shaft sleeve, a grinding cylinder, a dial, a sheath, a gasket, a feeding port seat and an outlet filter; the sealing wheel, a shaft sleeve, and a dial are radially fixed to the main shaft through a key; Screws, plus PTFE gaskets to fix the sealing wheel, shaft sleeve, and dial axially with the main shaft through keys; sealing wheel, inlet filter, grinding cylinder, outlet filter, screws with zirconia material sheath, dial , the shaft sleeve forms a closed full zirconia grinding inner cavity. 3. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 2, characterized in that: the dial is a plate structure, and the distance between the dials is adjusted by a bushing. The thickness of the dial is 10mm-20mm. 4. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 2, wherein the axial shape of the dial is a "cross" shape or a quincunx shape. 5. A horizontal bead mill with full zirconia ceramic grinding inner chamber and dial according to claim 2, characterized in that: the inlet filter screen is made of zirconia sealed end plate, gap adjustment pad, oxidized Composed of zirconia spacers and zirconia bottom plates, the gap between the zirconia sealing end plate and zirconia bottom plate is evenly stacked by gap adjustment pads and zirconia spacers to form the required gap, and then screwed to the right end of the cavity frame. 6. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 5, characterized in that: the number of said zirconia spacers is 5-12 pieces. 7. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 2, characterized in that: the outlet filter is made of zirconia plus a bead end plate and a gap adjustment pad , zirconia spacer plate and zirconia bottom plate, the opening of the zirconia bead mouth end plate corresponds to the opening of the feed port seat, the zirconia bottom plate is located at the bottom of the inlet filter screen; the zirconia bead mouth end plate and the zirconia bottom plate After the gap adjustment pads and zirconia spacers are evenly stacked to form the required gap, they are screwed to the left end of the cavity frame. 8. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 7, characterized in that the number of said zirconia spacers is 5-12. 9. A horizontal bead mill with full zirconia ceramic grinding cavity and dial according to claim 2, characterized in that: there is a distance of 0.1 mm to 0.8 mm between the sealing wheel and the end plate of the inlet filter. A gap of mm can pass through a part of the material to be filtered, and the rotary motion of the zirconia sealing wheel can make the material passing through the propulsion screw radially scatter outward, so that the inlet filter screen can be dynamically filtered. 10. A horizontal bead mill with a full zirconia ceramic grinding inner cavity and a dial according to claim 1, characterized in that: the frame is divided into floor type and table type. 11. A horizontal bead mill with full zirconia ceramic grinding inner cavity and dial according to claim 1, characterized in that: said cooling tank is equipped with a cooling jacket. 12. A horizontal bead mill with a full zirconia ceramic grinding inner cavity and a dial according to claim 1, wherein a cooling interlayer is provided outside the cavity frame. 13. A horizontal bead mill with a full zirconia ceramic grinding cavity and a dial according to claim 1, wherein a control button panel is provided on the upper left corner or upper right corner of the machine cover of the frame .

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