An equipment for regulating the surface temperature of flour grinding rolls through circulating water

Abstract

The present invention relates to the technical field of flour production, and specifically relates to a device for adjusting the surface temperature of flour grinding rolls through circulating water, including an outer frame, a feed hopper, a discharge hopper, and further including a cross-shaped rotating plate, a transmission assembly, a cooling water circulation assembly, a friction roll, a heat exchange assembly, and an air-cooling assembly. The two friction rolls are rotatably arranged in parallel in the outer frame, a concentric rod is installed inside the friction roll, the cross-shaped rotating plate is rotatably connected to the feed hopper, the transmission assembly and the cooling water circulation assembly are both installed on the outer frame, and the transmission assembly is connected to the two friction rolls and the cross-shaped rotating plate. By adjusting the flour grinding speed corresponding to different humidity raw materials, and adaptively adjusting the raw material feeding speed and the temperature reduction amplitude of the flour grinding rolls, the present invention solves the problems that when the humidity of the customer-supplied raw materials is relatively large, the humidity of the ground flour is relatively large, the customer needs to spend time drying the flour by themselves, and it is easy to cause the flour to be contaminated and the experience is not good.

Description

Technical Field

[0001] The present invention relates to the technical field of flour production, and particularly to a device for adjusting the surface temperature of flour grinding rollers through circulating water. Background Art

[0002] A flour mill is a mechanical device specifically used for grinding grains such as wheat into flour. It is the core equipment in the flour processing industry, and processes grain raw materials into flour with different precisions through mechanical grinding. Flour mills can be classified into double-roller mills, four-roller mills, eight-roller mills, vertical mills, Raymond mills, etc. among which the double-roller mill is suitable for small and medium-sized flour processing due to its simple structure and convenient operation, and is widely used in small flour mills for producing ordinary flour.

[0003] When a double-roller mill is used for flour production in a small flour mill, during the grinding process, a large amount of heat will be generated due to the friction between the flour grinding rollers and wheat. If the temperature is too high, the nutrients in the flour (such as vitamins, carotenoids, trace elements, etc.) will be damaged or lost. Therefore, it is necessary to reduce the temperature of the grinding rollers and the flour to retain the nutrients in the flour to the greatest extent.

[0004] Since small flour mills process a large number of customers' incoming materials, and the humidity of the wheat raw materials carried by different customers is different. When the wheat carried by some customers has a high humidity, the humidity of the flour after direct grinding is high, making it difficult to store the flour later. When customers dry the flour by themselves, it is not only cumbersome but also easy to cause the flour to be contaminated, thus bringing an unpleasant processing experience to the customers.

[0005] Therefore, a device for adjusting the surface temperature of flour grinding rollers through circulating water is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for adjusting the surface temperature of flour grinding rollers through circulating water. By correspondingly adjusting the flour grinding speed for raw materials with different humidities, and adaptively adjusting the raw material feeding speed and the temperature reduction amplitude of the flour grinding rollers, the problem that the humidity of the flour after grinding is high due to the high humidity of the customers' incoming materials, and the customers need to spend time drying the flour by themselves and it is easy to cause the flour to be contaminated and the experience is poor is solved. It has the effects of being flexible for use in small flour mills, being able to reduce the humidity after grinding of incoming materials with high humidity, eliminating the need for customers to dry the flour later, and fully ensuring the quality of flour production.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] An equipment for regulating the surface temperature of flour grinding rolls through circulating water, comprising an outer frame, a feed hopper, a discharge hopper, and further comprising a cross-shaped rotating plate, a transmission assembly, a cooling water circulation assembly, a friction roll, a heat exchange assembly, and an air-cooling assembly. The two friction rolls are rotatably arranged in parallel within the outer frame. A concentric rod is installed inside the inner circumference of the friction roll. The cross-shaped rotating plate is rotatably connected to the feed hopper. The transmission assembly and the cooling water circulation assembly are both installed on the outer frame, and the transmission assembly is connected to the two friction rolls and the cross-shaped rotating plate. The heat exchange assembly is installed between the outer frame and the inside of the friction roll, and the end of the cooling water circulation assembly is connected to the heat exchange assembly. The heat exchange assembly is in contact with the inner circumference of the friction roll. The air-cooling assembly is installed on the heat exchange assembly and is in transmission connection with the concentric rod. When the cooling water flows through the heat exchange assembly, heat exchange is carried out with the friction roll. The transmission assembly drives the two friction rolls to rotate relatively. When the friction roll rotates, the concentric rod drives the air-cooling assembly to rotate. When the air-cooling assembly rotates, the temperature of the side of the heat exchange assembly that is not in contact with the friction roll is reduced.

[0009] When processing flour with high humidity in the customer's incoming materials, if heating wires are installed in the feed hopper of the flour grinder to dry the wheat, the flour grinding cycle will be greatly extended due to the continuous heating and drying of the wheat, and it is not easy to control the drying degree of the wheat, which is likely to cause the destruction of nutrients in the wheat due to excessive pre-drying. Therefore, in this technical solution, when grinding wheat with high humidity, the driving speed of the transmission assembly is correspondingly changed, so that not only the feeding speed of the wheat can be controlled, but also the temperature reduction amplitude of the friction roll can be reduced. Thus, within the condition of slightly extending the processing time, the humidity of the ground wheat flour can be controlled within a certain range, which reduces the subsequent labor burden of customers with high incoming material humidity, improves the processing experience of customers, and can effectively ensure the grinding quality of the flour.

[0010] Preferably, one end of the friction roll that is not connected to the transmission assembly is open, and a through hole adapted to the friction roll is formed on the side wall of the outer frame. A belt groove is formed on the outer circumference of the concentric rod.

[0011] Preferably, the heat exchange assembly includes a fixing plate, a fixing rod, a connecting strip, a cooling box, a water inlet pipe, and a water outlet pipe. The fixing plate is installed on the outer wall of the outer frame. The fixing rod is fixed on the side wall of the fixing plate, and the fixing rod is horizontal and arranged in a staggered manner with the concentric rod. A double-groove pulley is rotatably arranged on the outer circumference of the fixing rod, and the double-groove pulley is in transmission connection with the concentric rod. The connecting strip is connected to the outer circumference of the fixing rod. The cooling box is installed at the end of the connecting strip, and the arc portion of the cooling box is in contact with the inner circumference of the friction roll. The water inlet pipe is connected to the edge of the straight portion of the cooling box, and the water outlet pipe is connected to the arc portion of the cooling box.

[0012] Preferably, the edge of the arc portion of the cooling box is provided with equally spaced outflow holes, and a spacer is installed in contact with the inner circumference of the cooling box at the middle position between adjacent outflow holes.

[0013] Preferably, the outer periphery of the water inlet pipe is provided with water outlet holes at equal intervals, and the water outlet holes are located inside the straight part of the cooling frame. The diameter of the water inlet pipe gradually decreases along the flowing direction of the cooling water, and the diameter of the water outlet holes gradually increases along the flowing direction of the cooling water.

[0014] Preferably, the air-cooling assembly includes a fixing piece, a rotating shaft and a rotating blade. The fixing piece is installed on the outer periphery of the fixing rod. The rotating shaft is rotatably arranged with the fixing piece. The rotating blade is installed on the outer periphery of the rotating shaft. The rotating shaft is in transmission connection with a double-groove pulley.

[0015] Preferably, the cooling water circulation assembly includes a water tank, a water pump, a water delivery pipe and a water return pipe. The water tank is installed on the outer wall of the outer frame. The water pump is arranged inside the water tank. The water delivery pipe is connected between the water outlet of the water pump and the end of the water inlet pipe. The water return pipe is connected between the top of the water tank and the end of the water outlet pipe.

[0016] Preferably, the transmission assembly includes a first belt pulley, a first gear, a second belt pulley, a third belt pulley, a second gear and a reduction motor. The first belt pulley is coaxially arranged with the cross-shaped rotating plate. The first gear and the second belt pulley are coaxially arranged with one of the friction rollers. The third belt pulley and the second gear are coaxially arranged with the other friction roller. The reduction motor is installed on the outer frame. The first gear meshes with the second gear. The first belt pulley is in transmission connection with the second belt pulley. The third belt pulley is in transmission connection with the output shaft of the reduction motor.

[0017] Preferably, the transmission ratio between the first gear and the second gear is less than 1, and the numerical value of the diameter of the first belt pulley is greater than the numerical value of the diameter of the second belt pulley.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. Aiming at the scenario of diverse customer-supplied materials in small processing plants, according to the different humidity of customer-supplied materials, when the humidity of the supplied materials is relatively high, by reducing the processing speed, simultaneously slowing down the raw material feeding speed and reducing the water circulation cooling range of the friction rollers, the humidity of the ground flour is controlled within a suitable range. This not only ensures the grinding quality of the flour, but also eliminates the need for customers to dry the flour separately, fully improving the customer's processing experience and significantly enhancing the market competitiveness of this equipment.

[0020] 2. By setting the cross-turn plate, transmission assembly and air-cooling assembly, when the humidity of the incoming material is high and the speed of the transmission assembly is reduced, because the cross-turn plate and the air-cooling assembly are both connected to the transmission assembly, when the speed of the reduction motor is reduced, the speed of the cross-turn plate and the rotary blade is reduced at the same time, so that the falling speed of the raw materials in the feed hopper is correspondingly slowed down, and the temperature of the heat exchange component is reduced by the rotation of the rotary blade. The temperature of the friction roller is then used to dry the raw materials. The moisture in the raw materials can not only evaporate quickly, but also effectively avoid the continuous heating of the friction roller, which leads to poor flour grinding quality.

[0021] 3. Through the cooling water circulation component, heat exchange component and air cooling component, when the humidity of the incoming material is normal, the equipment grinds flour at maximum power, and the air cooling component also works at a higher speed, thereby forming a one-way air flow channel inside the heat exchange component. The air enters from the open position of the friction roller and flows out of the heat exchange component, which can effectively reduce the cooling water temperature in the heat exchange component, thereby assisting in improving the cooling efficiency of the friction roller by the cooling water circulation component. When processing incoming materials with normal humidity, high efficiency production can also ensure the quality of flour after grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the outer frame of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the heat exchange component and the air cooling component of the present invention;

[0025] Figure 4 is a cross-sectional view of a feed hopper of the present invention;

[0026] Figure 5 is a cross-sectional view of the friction roller of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the heat exchange assembly of the present invention;

[0028] Figure 7 It is a partial cross-sectional view of the cooling frame of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the temperature reduction frame of the present invention;

[0030] Figure 9 It is a cross-sectional view of the water inlet pipe of the present invention.

[0031] In the figure: 1. Outer frame; 2. Feeding hopper; 3. Cross-shaped rotating plate; 4. Transmission assembly; 41. First pulley; 42. First gear; 43. Second pulley; 44. Third pulley; 45. Second gear; 46. Reduction motor; 5. Cooling water circulation assembly; 51. Water tank; 52. Water pump; 53. Water delivery pipe; 54. Return water pipe; 6. Friction roller; 61. Concentric rod; 611. Belt groove; 7. Discharge hopper; 8. Heat exchange assembly; 81. Fixed plate; 82. Fixed rod; 821. Double-groove pulley; 83. Connecting bar; 84. Cooling frame; 841. Outflow hole; 842. Partition; 85. Water inlet pipe; 851. Water outlet hole; 86. Water outlet pipe; 9. Air-cooling assembly; 91. Fixed piece; 92. Rotating shaft; 93. Rotating blade. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 9 , the present invention provides a device for adjusting the surface temperature of a flour grinding roller through circulating water, and the technical solution is as follows:

[0034] Refer to Figures 1 - 3, a device for adjusting the surface temperature of a flour grinding roller by circulating water, comprising an outer frame 1, a feed hopper 2, and a discharge hopper 7, wherein the feed hopper 2 and the discharge hopper 7 are both mounted on the outer frame 1, the feed hopper 2 is located at the top of the outer frame 1, and the discharge hopper 7 is located at the lower inner side of the outer frame 1, and further comprising a cross-turn plate 3, a transmission assembly 4, a cooling water circulation assembly 5, a friction roller 6, a heat exchange assembly 8, and an air cooling assembly 9, wherein two friction rollers 6 are arranged in parallel and rotate in the outer frame 1, the two friction rollers 6 have the same size and height, a concentric rod 61 is mounted on the inner circumference of the friction roller 6, and the cross-turn plate 3 rotates with the feed hopper 2 The cross-turn plate 3 is rotatably arranged in the blanking port of the feed hopper 2. When the cross-turn plate 3 rotates 90 degrees, the raw materials between the adjacent cross-turn plates 3 will pass through the blanking port and fall onto the surface of the friction roller 6 due to the rotation of the cross-turn plate 3. The transmission component 4 and the cooling water circulation component 5 are both installed on the outer frame 1, and the transmission component 4 is connected to the two friction rollers 6 and the cross-turn plate 3. When the transmission component 4 is started, it can provide power input to the friction roller 6 and the cross-turn plate 3 at the same time, and the rotation speed of the friction roller 6 and the cross-turn plate 3 changes accordingly with the rotation speed of the transmission component 4. The heat exchange component 8 is installed on the outer frame 1. The frame 1 is connected to the inside of the friction roller 6, and the end of the cooling water circulation component 5 is connected to the heat exchange component 8. The heat exchange component 8 is in contact with the inner circumference of the friction roller 6. When the cooling water flows through the heat exchange component 8, it exchanges heat with the friction roller 6, thereby reducing the surface temperature of the friction roller 6. The air cooling component 9 is installed on the heat exchange component 8, and the air cooling component 9 is connected to the concentric rod 61 by transmission. When the transmission component 4 drives the friction roller 6 to rotate, the concentric rod 61 that rotates with the friction roller 6 drives the air cooling component 9 to rotate through the heat exchange component 8. When the air cooling component 9 is started, it is located near the inner side of the heat exchange component 8. A one-way air flow channel is formed, thereby reducing the cooling water temperature in the heat exchange component 8. Since the two friction rollers 6 rotate in opposite directions, the vanes 93 in the two friction rollers 6 are set in opposite directions, so that the air flowing in contact with the heat exchange component 8 can be discharged from the open end of the friction roller 6. The cooling water circulation component 5 exchanges heat with the friction roller 6 when flowing through the heat exchange component 8. The transmission component 4 drives the two friction rollers 6 to rotate relative to each other. When the friction roller 6 rotates, the concentric rod 61 drives the air cooling component 9 to rotate. When the air cooling component 9 rotates, the temperature of the side of the heat exchange component 8 that is not in contact with the friction roller 6 is reduced.

[0035] Reference Figure 3 and Figure 5 As an embodiment of the present invention, specifically, the end of the friction roller 6 that is not connected to the transmission component 4 is open, and the side wall of the outer frame 1 is configured with a through hole adapted to the friction roller 6, so that the end of the heat exchange component 8 can extend through the through hole to the inner side of the friction roller 6 under the action of the through hole, and the outer periphery of the concentric rod 61 is configured with a belt groove 611, and the belt groove 611 position of the concentric rod 61 is connected to the heat exchange component 8 through a belt, thereby realizing that when the friction roller 6 rotates, power is transmitted to the heat exchange component 8.

[0036] ReferenceFigure 3 and Figure 6 As an embodiment of the present invention, specifically, the heat exchange component 8 includes a fixing plate 81, a fixing rod 82, a connecting strip 83, a cooling frame 84, a water inlet pipe 85 and a water outlet pipe 86. The fixing plate 81 is installed on the outer wall of the outer frame 1. The cross-section of the fixing plate 81 is an inverted L shape. The fixed part of the fixing plate 81 and the outer frame 1 is located below the through hole. The fixing rod 82 is fixed on the side wall of the fixing plate 81, and the fixing rod 82 is horizontal and is arranged offset from the concentric rod 61. The trajectory of the concentric rod 61 during rotation will not coincide with the fixing rod 82. A double-groove pulley 821 is rotatably arranged on the outer periphery of the fixing rod 82. The double-groove pulley 821 is drivingly connected to the concentric rod 61. When the concentric rod 61 rotates, the double-groove pulley 821 is driven to rotate through a belt. The connecting strip 83 is connected to the outer periphery of the fixing rod 82. The number of the connecting strips 83 is multiple. The cooling frame 84 is installed at the end of the connecting strip 83. The end cross-section of the cooling frame 84 is a "7" shape, and the arc part of the cooling frame 84 is attached to the inner periphery of the friction roller 6. The arc part of the cooling frame 84 is made of a copper / PTFE composite material, which has a low friction coefficient and high thermal conductivity, greatly reducing the relative friction between the cooling frame 84 and the friction roller 6 and the increase in the temperature of the cooling water in the cooling frame 84. The water inlet pipe 85 is connected to the edge of the straight part of the cooling frame 84, and the water outlet pipe 86 is connected to the arc part of the cooling frame 84. The cooling water in the cooling water circulation component 5 first flows into the water inlet pipe 85, and then flows from the water inlet pipe 85 into the cooling frame 84. After heat exchange between the cooling frame 84 and the friction roller 6, it flows back to the cooling water circulation component 5 through the water outlet pipe 86.

[0037] Referring to Figure 7 As an embodiment of the present invention, specifically, outflow holes 841 are formed at equal intervals on the edge of the arc part of the cooling frame 84. A spacer 842 is fitted and installed on the inner periphery of the cooling frame 84 at the middle position between adjacent outflow holes 841. Under the combined action of the spacer 842 and the outflow holes 841, the inner side of the cooling frame 84 is divided into several spaces, so that the cooling water flowing into the cooling frame 84 from the water inlet pipe 85 can flow independently and unidirectionally along the inner side of the cooling frame 84 and finally flow into the water outlet pipe 86.

[0038] Referring to Figure 8 and Figure 9As an embodiment of the present invention, specifically, the outer periphery of the water inlet pipe 85 is structured with water outlet holes 851 arranged at equal intervals, and the water outlet holes 851 are located on the inner side of the straight portion of the cooling frame 84. The diameter of the water inlet pipe 85 gradually decreases along the flow direction of the cooling water, and the diameter of the water outlet holes 851 gradually increases along the flow direction of the cooling water. Under the design effect of the diameter of the water inlet pipe 85 and the diameter of the water outlet holes 851, it can be fully ensured that there is cooling water with sufficient pressure inside the water inlet pipe 85 near the end of the transmission component 4, thereby ensuring that the temperature of the cooling water flowing at various locations in the cooling frame 84 has only a small difference, which is conducive to achieving uniform cooling of the surface of the friction roller 6, thereby improving the quality of flour after grinding.

[0039] Reference Figure 6 As an embodiment of the present invention, specifically, the air cooling component 9 includes a fixed plate 91, a rotating shaft 92 and a rotary vane 93. The fixed plate 91 is installed on the outer periphery of the fixed rod 82, the rotating shaft 92 and the fixed plate 91 are rotatably arranged, the rotary vane 93 is installed on the outer periphery of the rotating shaft 92, the rotating shaft 92 is transmission-connected with the double-groove pulley 821, when the concentric rod 61 drives the double-groove pulley 821 to rotate, the double-groove pulley 821 drives the rotating shaft 92 and the rotary vane 93 to rotate, the rotary vanes 93 in the two friction rollers 6 are arranged in opposite directions, and the setting direction of the rotary vane 93 is the direction in which the air close to the cooling frame 84 side can be driven to be discharged from the open end of the friction roller 6 when it rotates.

[0040] Reference Figure 2 As an embodiment of the present invention, specifically, the cooling water circulation component 5 includes a water tank 51, a water pump 52, a water pipe 53 and a return pipe 54. The water tank 51 is installed on the outer wall of the outer frame 1, the water pump 52 is arranged inside the water tank 51, the water pipe 53 is connected between the water outlet of the water pump 52 and the end of the water inlet pipe 85, and the return pipe 54 is connected between the top of the water tank 51 and the end of the water outlet pipe 86. The water pump 52 transports cooling water to the water inlet pipe 85 through the water pipe 53, and the cooling water enters the cooling frame 84 through the water outlet hole 851 on the water inlet pipe 85, and then flows into the water outlet pipe 86 through the outflow hole 841. The cooling water flowing out from the end of the water outlet pipe 86 flows back to the water tank 51 through the return pipe 54.

[0041] Reference Figure 1 and Figure 4, as an implementation manner of the present invention, specifically, the transmission assembly 4 includes a first pulley 41, a first gear 42, a second pulley 43, a third pulley 44, a second gear 45 and a reduction motor 46. The first pulley 41 is coaxially arranged with the cross turntable 3. The first gear 42 and the second pulley 43 are coaxially arranged with one of the friction rollers 6. The third pulley 44 and the second gear 45 are coaxially arranged with the other friction roller 6. The reduction motor 46 is installed on the outer frame 1. The reduction motor 46 is connected to the mains through a frequency conversion controller and a switch. The first gear 42 meshes with the second gear 45. The first pulley 41 is drivingly connected to the second pulley 43. The third pulley 44 is drivingly connected to the output shaft of the reduction motor 46. The transmission ratio between the first gear 42 and the second gear 45 is less than 1, and the diameter value of the first pulley 41 is greater than the diameter value of the second pulley 43. When the reduction motor 46 starts, it drives the third pulley 44 and the second gear 45 to rotate together. The second gear 45 drives the first gear 42 and the second pulley 43 to rotate. The second pulley 43 drives the first pulley 41 to rotate. The two friction rollers 6 rotate together with the first gear 42 and the second gear 45 respectively. The cross turntable 3 rotates together with the first pulley 41.

[0042] Working principle: When this device is applied in a small processing factory, before flour grinding production, the humidity of the customer's incoming material is checked in advance, and the reduction motor 46 is controlled to be at an appropriate speed according to the incoming material humidity. When the humidity is relatively high, the power supply of the reduction motor 46 is turned on for a period of time in advance to slightly heat up the friction rollers 6, and the reduction motor 46 is controlled to rotate at a low speed. When the raw material is put into the feed hopper 2, the cross turntable 3 rotates at a low speed, thereby slowing down the speed at which the raw material falls onto the surface of the friction rollers 6. At the same time, the speeds of the friction rollers 6 and the rotating blades 93 are reduced to appropriately utilize the temperature of the friction rollers 6 to accelerate the evaporation of the moisture in the raw material, and at the same time prevent the temperature of the friction rollers 6 from rising and affecting the flour grinding quality. At the same time, the power supply of the water pump 52 is turned on, and the cooling water is controlled to circulate between the water tank 51 and the heat exchange assembly 8 at a certain speed;

[0043] Specifically, when the reduction motor 46 starts, it drives the third pulley 44 and the second gear 45 to rotate together. The second gear 45 drives the first gear 42 and the second pulley 43 to rotate. The second pulley 43 drives the first pulley 41 to rotate through a belt. The two friction rollers 6 rotate at different speeds together with the first gear 42 and the second gear 45 respectively. The cross turntable 3 rotates together with the first pulley 41. When the blades of the cross turntable 3 rotate to a position lower than the horizontal plane, a part of the raw material between the blades falls between the surfaces of the friction rollers 6. The raw material is ground when passing through the two friction rollers 6 rotating at different speeds, and then falls into the discharge hopper 7;

[0044] During the rotation of the friction roller 6, its temperature will rise. To control the temperature of the friction roller 6, the water pump 52 sends cooling water into the water inlet pipe 85 through the water delivery pipe 53. Subsequently, the cooling water passes through the water outlet holes 851 on the water inlet pipe 85 and enters the cooling frame 84, and then flows into the water outlet pipe 86 through the outflow holes 841. The cooling water flowing out from the end of the water outlet pipe 86 returns to the water tank 51 through the return pipe 54. When the cooling water flows through the cooling frame 84, the cooling water exchanges heat with the friction roller 6 through the cooling frame 84 to reduce the surface temperature of the friction roller 6, so as to control the surface temperature of the friction roller 6 within a suitable range. At the same time, when the friction roller 6 rotates, it drives the concentric rod 61 to rotate together. The rotation of the concentric rod 61 provides power input for the double-groove pulley 821. Furthermore, the double-groove pulley 821 drives the rotating shaft 92 and the rotating blade 93 to rotate. The rotation of the rotating blade 93 drives the air on the side of the friction roller 6 that fits the cooling frame 84 inside the friction roller 6 to be discharged from the open end of the friction roller 6, thereby reducing the temperature of the cooling water in the cooling frame 84 to assist in improving the adjustment effect of the surface temperature of the friction roller 6. When the humidity of the incoming material is relatively high, the rotation speed of the rotating blade 93 decreases, thereby appropriately reducing the control range of the surface temperature of the friction roller 6 to accelerate the drying of the raw material with a relatively high humidity.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An equipment for regulating the surface temperature of flour grinding rollers through circulating water, comprising an outer frame (1), a feed hopper (2), and a discharge hopper (7), characterized in that: It further includes a cross-shaped rotating plate (3), a transmission assembly (4), a cooling water circulation assembly (5), friction rollers (6), a heat exchange assembly (8), and an air cooling assembly (9). The two friction rollers (6) are rotatably arranged in parallel within the outer frame (1). A concentric rod (61) is installed on the inner circumference of the friction roller (6). The cross-shaped rotating plate (3) is rotatably connected to the feed hopper (2). The transmission assembly (4) and the cooling water circulation assembly (5) are both installed on the outer frame (1), and the transmission assembly (4) is connected to the two friction rollers (6) and the cross-shaped rotating plate (3). The heat exchange assembly (8) is installed between the outer frame (1) and the interior of the friction roller (6), and the end of the cooling water circulation assembly (5) is connected to the heat exchange assembly (8). The heat exchange assembly (8) is in contact with the inner circumference of the friction roller (6). The air cooling assembly (9) is installed on the heat exchange assembly (8) and is in transmission connection with the concentric rod (61). When cooling water flows through the heat exchange assembly (8), heat exchange occurs between the heat exchange assembly (8) and the friction roller (6). The transmission assembly (4) drives the two friction rollers (6) to rotate relatively. When the friction roller (6) rotates, the concentric rod (61) drives the air cooling assembly (9) to rotate. When the air cooling assembly (9) rotates, the temperature of the side of the heat exchange assembly (8) that is not in contact with the friction roller (6) is reduced; One end of the friction roller (6) that is not connected to the transmission assembly (4) is open, and a through hole adapted to the friction roller (6) is formed on the side wall of the outer frame (1). A belt groove (611) is formed on the outer circumference of the concentric rod (61); The heat exchange assembly (8) includes a fixing plate (81), a fixing rod (82), a connecting strip (83), a cooling box (84), a water inlet pipe (85), and a water outlet pipe (86). The fixing plate (81) is installed on the outer wall of the outer frame (1). The fixing rod (82) is fixed on the side wall of the fixing plate (81), and the fixing rod (82) is horizontal and arranged offset from the concentric rod (61). A double-groove pulley (821) is rotatably arranged on the outer circumference of the fixing rod (82). The double-groove pulley (821) is in transmission connection with the concentric rod (61). The connecting strip (83) is connected to the outer circumference of the fixing rod (82). The cooling box (84) is installed at the end of the connecting strip (83), and the arc portion of the cooling box (84) is in contact with the inner circumference of the friction roller (6). The water inlet pipe (85) is connected to the edge of the straight portion of the cooling box (84), and the water outlet pipe (86) is connected to the arc portion of the cooling box (84); Outflow holes (841) are formed at equal intervals on the edge of the arc portion of the cooling box (84). A spacer (842) is installed in contact with the inner circumference of the cooling box (84) at the middle position between adjacent outflow holes (841); Water outlet holes (851) are formed at equal intervals on the outer circumference of the water inlet pipe (85), and the water outlet holes (851) are located inside the straight portion of the cooling box (84). The diameter of the water inlet pipe (85) gradually decreases along the flowing direction of the cooling water, and the diameter of the water outlet holes (851) gradually increases along the flowing direction of the cooling water; The air-cooling component (9) includes a fixing piece (91), a rotating shaft (92) and rotating blades (93). The fixing piece (91) is installed on the outer periphery of the fixing rod (82). The rotating shaft (92) is rotatably arranged with the fixing piece (91). The rotating blades (93) are installed on the outer periphery of the rotating shaft (92). The rotating shaft (92) is in transmission connection with the double-groove pulley (821).

2. The device for regulating the surface temperature of flour mill rolls through circulating water according to claim 1, characterized in that: The cooling water circulation component (5) includes a water tank (51), a water pump (52), a water delivery pipe (53) and a water return pipe (54). The water tank (51) is installed on the outer wall of the outer frame (1). The water pump (52) is arranged inside the water tank (51). The water delivery pipe (53) is connected between the water outlet of the water pump (52) and the end of the water inlet pipe (85). The water return pipe (54) is connected between the top of the water tank (51) and the end of the water outlet pipe (86).

3. The equipment for regulating the surface temperature of flour mill rolls through circulating water according to claim 1, characterized in that: The transmission component (4) includes a first belt pulley (41), a first gear (42), a second belt pulley (43), a third belt pulley (44), a second gear (45) and a reduction motor (46). The first belt pulley (41) is coaxially arranged with the cross-shaped rotating plate (3). The first gear (42) and the second belt pulley (43) are coaxially arranged with one of the friction rollers (6). The third belt pulley (44) and the second gear (45) are coaxially arranged with the other friction roller (6). The reduction motor (46) is installed on the outer frame (1). The first gear (42) meshes with the second gear (45). The first belt pulley (41) is in transmission connection with the second belt pulley (43). The third belt pulley (44) is in transmission connection with the output shaft of the reduction motor (46).

4. The device for adjusting the surface temperature of the flour grinding roller through circulating water according to claim 3, characterized in that: The transmission ratio between the first gear (42) and the second gear (45) is less than 1, and the diameter value of the first belt pulley (41) is greater than the diameter value of the second belt pulley (43).

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