Roller Grinding Machine

Abstract

This utility model belongs to the field of roller grinding technology and discloses a roller grinder. The roller grinder includes a roller, a water tank, and a liquid delivery pipe. The roller has an internal cavity and is rotatably connected to the water tank via a first rotating shaft. The end of the first rotating shaft extends into the water tank. The first rotating shaft and the roller share a return liquid hole, which extends along the axis of the roller and communicates with the cavity and the water tank at both ends, respectively. The water tank has a first liquid outlet located at its bottom. The liquid delivery pipe is installed inside the water tank, which has an inlet channel. The downstream side of the inlet channel communicates with the liquid delivery pipe. The liquid delivery pipe passes through the return liquid hole and extends into the cavity. A return liquid channel is formed between the wall of the return liquid hole and the liquid delivery pipe, connecting the cavity and the water tank. This utility model can circulate and deliver low-temperature liquid into the roller, thereby achieving temperature control of the roller to prevent material from sticking and drying on the roller surface, thus ensuring that the grinding effect is not affected.

Description

Technical Field

[0001] This utility model relates to the field of roller grinding technology, and in particular to a roller grinding machine. Background Technology

[0002] Roller mills, as mechanical equipment used for grinding and dispersing high-viscosity materials, are widely used in the processing of liquid slurries and fluids such as paints, inks, pigments, polymers, cosmetics, ceramics, and rubber. Specifically, roller mills achieve grinding and dispersion by adjusting the rotation speed and direction of the rollers to create mutual compression between them. However, prolonged compression and friction can cause the roller surface to heat up, leading to material adhesion and dry burning on the roller surface, thus affecting the grinding effect.

[0003] Therefore, there is an urgent need for a roller mill that can control the temperature of the rollers during the grinding process to prevent materials from sticking and burning on the roller surface. Utility Model Content

[0004] The purpose of this invention is to provide a roller mill that controls the temperature of the rollers during the grinding process to prevent materials from sticking and burning on the roller surface.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Roller mills include:

[0007] The roller has an internal cavity;

[0008] A water tank is disposed on one side of the roller along its axial direction. The roller is rotatably connected to the water tank via a first rotating shaft, and the end of the first rotating shaft extends into the water tank. The first rotating shaft and the roller are jointly provided with a return liquid hole, which extends along the axis of the roller and is connected at both ends to the cavity and the water tank, respectively. The water tank is provided with a first liquid outlet, which is located at the bottom of the water tank.

[0009] A liquid delivery pipe is installed inside the water tank. The water tank is provided with a liquid inlet channel. The downstream side of the liquid inlet channel is connected to the liquid delivery pipe. The liquid delivery pipe passes through the liquid return hole and extends into the cavity. A liquid return channel is formed between the wall of the liquid return hole and the liquid delivery pipe. The liquid return channel connects the cavity and the water tank.

[0010] Preferably, the roller mill has three rollers arranged in parallel, and each roller is provided with a corresponding liquid delivery pipe. The liquid inlet channel is connected to all three liquid delivery pipes.

[0011] Preferably, the liquid inlet channel includes a first flow channel and a second flow channel. The upstream end of the first flow channel forms a liquid inlet, and the downstream end of the first flow channel is connected to the second flow channel. The second flow channel extends along the arrangement direction of the three rollers, and all three liquid delivery pipes are connected to the second flow channel.

[0012] Preferably, the water tank is further provided with a second liquid outlet, which is located above the first liquid outlet.

[0013] Preferably, the bottom of the water tank is provided with a mounting base, and the mounting base is provided with a first liquid outlet channel and a second liquid outlet channel, which are respectively connected to the first liquid outlet and the second liquid outlet.

[0014] Preferably, a temperature sensor is provided in the first liquid outlet channel.

[0015] Preferably, the outer wall of the water tank is equipped with a liquid inlet connector, which is connected to the liquid inlet channel. The liquid inlet connector is provided with a control valve, which is configured to control the flow rate of the liquid flowing along the liquid inlet connector.

[0016] Preferably, a first sealing ring is provided between the liquid inlet connector and the water tank, and the first sealing ring surrounds the outer periphery of the connection between the liquid inlet connector and the liquid inlet channel.

[0017] Preferably, the water tank includes a first housing and a second housing that are detachably connected, and a second sealing ring is formed between the first housing and the second housing by pressing against each other.

[0018] Preferably, the cavity extends along the axial direction of the roller.

[0019] The beneficial effects of this utility model are:

[0020] This invention creates a cavity inside the roller and incorporates a water tank and a liquid delivery pipe to circulate and deliver a low-temperature liquid into the roller, thereby achieving heat exchange and temperature control. This prevents materials from sticking to the roller surface and burning, ensuring that the grinding effect is not affected. Attached Figure Description

[0021] Figure 1 This is one of the structural schematic diagrams of the roller, water tank and liquid delivery pipe in the embodiments of this utility model;

[0022] Figure 2 This is the second schematic diagram of the structure of the roller, water tank and liquid delivery pipe in this utility model embodiment;

[0023] Figure 3This is a schematic diagram of the roller, water tank, and liquid delivery pipe after removing the liquid inlet connector in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the roller, water tank and liquid delivery pipe after removing the liquid inlet connector and the first housing in this embodiment of the utility model;

[0025] Figure 5 This is a top view of the roller, water tank, and liquid delivery pipe in an embodiment of this utility model;

[0026] Figure 6 It is along Figure 5 Sectional view of line AA in the middle;

[0027] Figure 7 It is along Figure 5 Sectional view of the middle BB line;

[0028] Figure 8 It is along Figure 5 A cross-sectional view of the CC line;

[0029] Figure 9 This is a schematic diagram of the structure of the roller, water tank, liquid delivery pipe and liquid source in the embodiment of this utility model.

[0030] In the picture:

[0031] 1. Roller; 11. Cavity; 12. First rotating shaft; 13. Return hole; 14. Second rotating shaft;

[0032] 2. Water tank; 21. First liquid outlet; 22. Liquid inlet channel; 221. First flow channel; 222. Second flow channel; 23. Liquid inlet; 24. Second liquid outlet; 25. Mounting base; 251. First liquid outlet channel; 252. Second liquid outlet channel; 253. Temperature sensor; 254. First liquid outlet connector; 255. Second liquid outlet connector; 26. Liquid inlet connector; 261. Control valve; 262. First sealing ring; 27. First housing; 271. Second sealing ring; 28. Second housing; 29. ​​Third flow channel;

[0033] 3. Liquid delivery pipe; 4. Liquid source; 41. First reflux pipe; 42. Second reflux pipe; 43. Liquid inlet pipe. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] Please see Figures 1 to 9 This embodiment provides a roller mill, which includes a roller 1, a water tank 2, and a liquid delivery pipe 3. The roller 1 has an internal cavity 11. The water tank 2 is located on one side of the roller 1 along its axial direction. The roller 1 is rotatably connected to the water tank 2 via a first rotating shaft 12, the end of which extends into the water tank 2. Exemplarily, a rotating bearing (not shown in the figure) is fitted around the outer circumference of the first rotating shaft 12, and the rotating bearing is installed between the first rotating shaft 12 and the water tank 2. Furthermore, the first rotating shaft 12 and the roller 1 share a return liquid hole 13, which extends along the axis of the roller 1. Both ends of the return liquid hole 13 communicate with the cavity 11 and the water tank 2, respectively. The water tank 2 has a first liquid outlet 21 located at the bottom of the water tank 2.

[0039] Understandably, the end of roller 1 furthest from the first rotating shaft 12 is rotatably connected to other structures of the roller mill via the second rotating shaft 14.

[0040] The liquid delivery pipe 3 is installed inside the water tank 2. The water tank 2 is provided with a liquid inlet channel 22. The downstream side of the liquid inlet channel 22 is connected to the liquid delivery pipe 3. The liquid delivery pipe 3 passes through the liquid return hole 13 and extends into the cavity 11. The diameter of the liquid return hole 13 is larger than the diameter of the liquid delivery pipe 3. Thus, a liquid return channel is formed between the hole wall of the liquid return hole 13 and the liquid delivery pipe 3. The liquid return channel connects the cavity 11 and the water tank 2.

[0041] Therefore, in this embodiment, the roller mill is equipped with a water tank 2, which has a liquid inlet channel 22. The liquid inlet channel 22 is connected to the cavity 11 inside the roller 1 through the liquid delivery pipe 3, thereby enabling the delivery of low-temperature liquid into the roller 1 and completing heat exchange with the roller 1, thus achieving temperature control of the roller 1. Moreover, since a return liquid channel is formed between the liquid delivery pipe 3 and the first rotating shaft 12, when the liquid inside the roller 1 accumulates to a height above the return liquid hole 13, the liquid inside the roller 1 can flow back into the water tank 2 through the return liquid channel and flow out through the first liquid outlet 21 at the bottom of the water tank 2, thereby forming a circulation loop for the low-temperature liquid.

[0042] As can be seen from the above, by setting the first liquid outlet 21 at the bottom of the water tank 2 in this embodiment, the liquid flowing back into the water tank 2 can be automatically discharged from the first liquid outlet 21 by gravity. Thus, in this embodiment, the liquid transported to the inside of the roller 1 can be automatically recovered without the need for a water pump or other suction structure.

[0043] Specifically, the bottom of the water tank 2 is provided with a mounting base 25, and the mounting base 25 is provided with a first liquid outlet channel 251, which is connected to the first liquid outlet 21. In addition, the mounting base 25 is provided with a first liquid outlet connector 254, which is connected to the downstream end of the first liquid outlet channel 251 and is used to connect to the first return pipe 41. The liquid flowing out of the first liquid outlet 21 can flow into the first return pipe 41 through the first liquid outlet channel 251 and thus be recovered.

[0044] It is understandable that the liquid flowing out of the first outlet 21, after being cooled, will be sent back into the roller 1 through the inlet channel 22, thereby achieving circulating cooling. Specifically, the upstream side of the inlet channel 22 and the first outlet 21 are both connected to the liquid source 4, which is a refrigerator, so that it can supply low-temperature liquid to the inlet channel 22. Moreover, the liquid flowing out of the first outlet 21 can return to the liquid source 4, which can cool it down and supply it back to the inlet channel 22 through the inlet pipe 43, thus forming a circulating loop for the low-temperature liquid.

[0045] As for the liquid inside the roller 1, during the operation of the roller mill, as the roller 1 rotates, the liquid rotates synchronously inside the roller 1, thereby effectively cooling the roller 1.

[0046] As described above, this embodiment provides a cavity 11 inside the roller 1 and a water tank 2 and a liquid delivery pipe 3 to circulate and deliver low-temperature liquid into the roller 1, thereby achieving heat exchange in the roller 1 and controlling the temperature of the roller 1 to prevent the material from sticking and burning on the surface of the roller 1, thus ensuring that the grinding effect is not affected.

[0047] It is understood that the other structures included in the roller mill are all existing technologies, therefore, this embodiment will not elaborate on them.

[0048] Additionally, it should be noted that in other alternative embodiments, the water tank 2 and the liquid delivery pipe 3 can also be used to circulate and deliver high-temperature liquid into the roller 1, thereby heating the liquid slurry or fluid material before grinding to reduce the viscosity of the liquid slurry or fluid material, thus preventing the grinding and dispersing effect of the roller mill from decreasing due to excessive viscosity of the liquid slurry or fluid material.

[0049] Furthermore, in this embodiment, the cavity 11 extends along the axial direction of the roller 1, thereby increasing the contact area between the cryogenic liquid and the roller 1, and thus ensuring that the liquid input into the roller 1 can cool the roller 1 more fully.

[0050] Moreover, in this embodiment, the return hole 13 is coaxially arranged with the roller 1, and the diameter of the cavity 11 is larger than the diameter of the return hole 13, so that the cryogenic liquid flowing into the cavity 11 can form a cryogenic liquid pool inside the roller 1. When the cryogenic liquid pool overflows the return channel, the liquid will flow back to the water tank 2 through the return channel. Thus, the cryogenic liquid can cool the roller 1 more fully.

[0051] In addition, by way of example, the roller mill in this embodiment is a three-roll mill, that is, the roller mill has three rollers 1 arranged in parallel, and each roller 1 is provided with a liquid delivery pipe 3. The liquid inlet channel 22 is connected to the three liquid delivery pipes 3, so as to synchronously deliver low temperature liquid into the three rollers 1, thereby realizing synchronous cooling of the three rollers 1, thereby improving heat dissipation efficiency and further effectively preventing the material from sticking and burning on the surface of the rollers 1.

[0052] Specifically, the liquid inlet channel 22 includes a first flow channel 221 and a second flow channel 222. The upstream end of the first flow channel 221 forms a liquid inlet 23, and the downstream end of the first flow channel 221 is connected to the second flow channel 222. The second flow channel 222 extends along the arrangement direction of the three rollers 1, and the three liquid delivery pipes 3 are all connected to the second flow channel 222. That is, in this embodiment, the three liquid delivery pipes 3 are connected in parallel on the second flow channel 222, thereby realizing the synchronous delivery of cryogenic liquid to the interior of the three rollers 1.

[0053] Of course, in other alternative embodiments, the roller mill can also be a four-roll mill or other multi-roll mill. Accordingly, all rollers 1 are provided with liquid delivery pipes 3. All liquid delivery pipes 3 of the roller mill are connected in parallel on the second flow channel 222. This embodiment does not impose a specific limitation on the number of rollers 1 included in the roller mill.

[0054] Based on the above, in this embodiment, an inlet connector 26 is installed on the outer wall of the water tank 2. The inlet connector 26 is connected to the inlet channel 22. The inlet connector 26 is equipped with a control valve 261. The control valve 261 is configured to control the flow rate of the liquid flowing along the inlet connector 26, so as to adjust the flow rate of the low-temperature liquid in the inlet channel 22, thereby adjusting the flow rate of the low-temperature liquid inside the roller 1, thereby achieving precise control of the temperature of the roller 1.

[0055] Moreover, this embodiment can flexibly change the supply rate of cryogenic liquid by adjusting the opening degree of control valve 261, thereby adapting to different grinding requirements and material characteristics, and ensuring the stability and efficiency of the grinding process.

[0056] As described above, a first sealing ring 262 is formed between the liquid inlet connector 26 and the water tank 2. The first sealing ring 262 surrounds the outer periphery of the connection between the liquid inlet connector 26 and the liquid inlet channel 22 to prevent the low-temperature liquid from leaking from the gap between the liquid inlet connector 26 and the water tank 2. This ensures that the low-temperature liquid can be stably and continuously supplied into the liquid inlet channel 22 and further transported into the roller 1, thereby achieving precise temperature control of the roller 1.

[0057] Furthermore, the water tank 2 includes a detachably connected first housing 27 and a second housing 28, which facilitates cleaning and maintenance of the interior of the water tank 2, as well as inspection and replacement of internal components. The liquid inlet channel 22 and the liquid inlet 23 are located on the first housing 27, while the first liquid outlet 21 is located on the second housing 28.

[0058] Furthermore, a second sealing ring 271 is provided between the first housing 27 and the second housing 28 to press against each other. The provision of the second sealing ring 271 improves the sealing performance of the water tank 2 to prevent the liquid flowing back into the water tank 2 from leaking from the gap between the first housing 27 and the second housing 28, thereby ensuring that the roller mill can operate normally.

[0059] For example, in this embodiment, the first housing 27 and the second housing 28 are bolted together. Of course, in other optional embodiments, the first housing 27 and the second housing 28 may also be connected by snap-fit ​​or other detachable connection methods. This embodiment does not impose specific limitations on this.

[0060] Furthermore, it should be noted that when the pipe downstream of the first outlet 21 is blocked, the liquid flowing back into the water tank 2 cannot be discharged in time, leading to liquid accumulation inside the water tank 2 and affecting the normal operation of the roller mill. Therefore, this embodiment also provides a second outlet 24 inside the water tank 2, which is also located on the second housing 28 and positioned above the first outlet 21. Thus, when the pipe downstream of the first outlet 21 is blocked, the liquid accumulated in the water tank 2 can be discharged promptly through the second outlet 24, preventing excessive liquid accumulation inside the water tank 2 from affecting the backflow of liquid from the roller 1 into the water tank 2, thereby further ensuring the stable operation of the roller mill.

[0061] Understandably, the second outlet 24 is also connected to the liquid source 4. Specifically, the water tank 2 is provided with a third flow channel 29. The third flow channel 29 is located on the second shell 28. The mounting base 25 is also provided with a second outlet channel 252. The upstream end of the third flow channel 29 forms the second outlet 24, and the downstream end of the third flow channel 29 is connected to the second outlet channel 252. Thus, the second outlet channel 252 is connected to the second outlet 24. In addition, the mounting base 25 is also provided with a second outlet connector 255. The second outlet connector 255 is connected to the downstream end of the second outlet channel 252 and is used to connect to the second return pipe 42. The liquid flowing out of the second outlet 24 can flow into the second return pipe 42 through the second outlet channel 252 and be recovered to the liquid source 4.

[0062] Based on the above, a temperature sensor 253 is provided in the first liquid outlet channel 251. The temperature sensor 253 is used to monitor the temperature of the liquid flowing out from the first liquid outlet 21 in real time, and adjust the temperature of the low-temperature liquid supplied from the liquid source 4 to the liquid inlet channel 22 accordingly, so as to ensure accurate temperature control of the roller 1.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A roll mill characterized by, include: The roller (1) has a cavity (11) inside; A water tank (2) is disposed on one side of the roller (1) along its axial direction. The roller (1) is rotatably connected to the water tank (2) via a first rotating shaft (12), and the end of the first rotating shaft (12) extends into the water tank (2). The first rotating shaft (12) and the roller (1) are jointly provided with a return hole (13). The return hole (13) extends along the axis of the roller (1), and the two ends of the return hole (13) are respectively connected to the cavity (11) and the water tank (2). The water tank (2) is provided with a first outlet (21), which is located at the bottom of the water tank (2). A liquid delivery pipe (3) is installed inside the water tank (2). The water tank (2) is provided with a liquid inlet channel (22). The downstream side of the liquid inlet channel (22) is connected to the liquid delivery pipe (3). The liquid delivery pipe (3) passes through the liquid return hole (13) and extends into the cavity (11). A liquid return channel is formed between the hole wall of the liquid return hole (13) and the liquid delivery pipe (3). The liquid return channel connects the cavity (11) and the water tank (2).

2. The roll mill of claim 1, wherein, The roller mill has three rollers (1) arranged in parallel, and each roller (1) is provided with a corresponding liquid delivery pipe (3). The liquid inlet channel (22) is connected to the three liquid delivery pipes (3).

3. The roll mill of claim 2, wherein, The liquid inlet channel (22) includes a first flow channel (221) and a second flow channel (222). The upstream end of the first flow channel (221) forms a liquid inlet (23), and the downstream end of the first flow channel (221) is connected to the second flow channel (222). The second flow channel (222) extends along the arrangement direction of the three rollers (1), and the three liquid delivery pipes (3) are all connected to the second flow channel (222).

4. The roll mill of claim 1, wherein, The water tank (2) is also provided with a second liquid outlet (24), which is located above the first liquid outlet (21).

5. The roller mill according to claim 4, characterized in that, The bottom of the water tank (2) is provided with a mounting base (25), and the mounting base (25) is provided with a first liquid outlet channel (251) and a second liquid outlet channel (252). The first liquid outlet channel (251) and the second liquid outlet channel (252) are respectively connected to the first liquid outlet (21) and the second liquid outlet (24).

6. The roll mill of claim 5, wherein, A temperature sensor (253) is provided in the first liquid outlet channel (251).

7. The roll mill of claim 1, wherein, The outer wall of the water tank (2) is equipped with a liquid inlet connector (26), which is connected to the liquid inlet channel (22). The liquid inlet connector (26) is provided with a control valve (261), which is configured to control the flow rate of the liquid flowing along the liquid inlet connector (26).

8. The roll mill of claim 7, wherein, A first sealing ring (262) is formed between the liquid inlet connector (26) and the water tank (2) by pressure. The first sealing ring (262) surrounds the outer periphery of the connection between the liquid inlet connector (26) and the liquid inlet channel (22).

9. The roller mill according to claim 1, characterized in that, The water tank (2) includes a first housing (27) and a second housing (28) that are detachably connected, and a second sealing ring (271) is formed between the first housing (27) and the second housing (28) by pressing against each other.

10. The roll mill of claim 1, wherein, The cavity (11) extends along the axial direction of the roller (1).

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