Flour mill with water cooling mechanism

Abstract

The invention relates to the field of flour mills, in particular to a flour mill with a water cooling mechanism, which comprises a water cooling circulation unit for circulation and heat exchange treatment of cooling water, and a water outlet of the water cooling circulation unit is fixedly connected with a water inlet pipe; the water flow proportional valve is used for controlling the water flow, the two ends of the water flow proportional valve are connected with the water inlet pipe, and a first rotating connector is rotationally installed at the top of the water inlet pipe; according to the flour mill with the water cooling mechanism, when the flow speed of cooling water is increased and the cooling range is decreased, a large amount of heat can be generated in the contact area between the two grinding rollers and the part, making contact with powder, of the two grinding rollers in the grinding process; and heat distribution is not uniform. The water flow speed is high, heat of local high-temperature areas can be rapidly taken away, and local overheating of the roller surface is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of flour mills, and specifically relates to a flour mill with a water cooling mechanism. Background Technique

[0002] At present, there are various flour milling equipments on the market, and most of the flour milling equipments use mechanical grinding methods to process flour. However, a large amount of heat will be generated during the grinding process. Sometimes, due to the material properties of the ground materials, the flour milling effect is poor when the heat is too high, and it will also affect the wear resistance of the grinding disc.

[0003] However, for the processing of high-grade flour, different flours have different thermal conductivities and specific heat capacities. For example, wheat flour, corn flour, and rice flour all have different thermal conductivities. If the temperature of the water-cooled grinding roller remains unchanged, for some flours with poor thermal conductivity or prone to physical changes at lower temperatures, the following will occur: 1. Uneven cooling; 2. Increased equipment wear: Flours with poor thermal conductivity may become more brittle and hard at low temperatures, increasing the difficulty of grinding. Summary of the Invention

[0004] The present invention aims to provide a flour mill with a water cooling mechanism to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A flour mill with a water cooling mechanism includes a water-cooled circulation unit for circulating and heat-exchanging cooling water. The water outlet of the water-cooled circulation unit is fixedly connected to a water inlet pipe.

[0006] A water flow proportional valve for controlling the water flow, both ends of the water flow proportional valve are connected to the water inlet pipe, and a first rotary joint is rotatably installed at the top of the water inlet pipe.

[0007] A flour milling assembly for grinding materials into powder and cooling the rollers, the flour milling assembly is connected to the first rotary joint.

[0008] One end of the flour milling assembly away from the first rotary joint is provided with a second rotary joint. A water outlet pipe is rotatably installed at the bottom of the second rotary joint, and one end of the water outlet pipe away from the second rotary joint is connected to the water inlet of the water-cooled circulation unit.

[0009] Preferably, the flour milling assembly includes an outer housing, both ends of the outer housing are sleeved with the first rotary joint and the second rotary joint respectively. A feed inlet is opened at the top of the outer housing, and a discharge outlet is opened at the bottom of the outer housing.

[0010] Preferably, a support roller frame is fixedly installed at the bottom of the inner cavity of the outer shell, and rotating shafts are rotatably installed at both ends of the support roller frame, wherein the number of rotating shafts is two, and the outer sides of the rotating shafts are fixedly connected to the first grinding roller and the second grinding roller.

[0011] Preferably, the outer side of the support roller frame is connected to a servo motor through a frame, the output end of the servo motor is connected to a first pulley, the outer side of the first pulley is transmission-connected to a belt, and the inner side of the belt away from the first pulley is transmission-connected to a second pulley.

[0012] Preferably, the outer side of the belt is connected to a third pulley for transmission, wherein the third pulley and the second pulley rotate in opposite directions with the center facing downward, and the centers of the third pulley and the second pulley are fixedly connected to the rotating shaft.

[0013] Preferably, a short pipe is fixedly connected to the outer end surface of the No. 1 grinding roller, an end of the short pipe away from the No. 1 grinding roller is fixedly connected to a sleeve pipe, a side of the sleeve pipe away from the short pipe is fixedly connected to a flow pipe, and an end of the flow pipe away from the sleeve pipe is fixedly connected to the No. 2 rotary joint;

[0014] The sleeve is used to pass the water inside the No. 1 grinding roller and the No. 2 grinding roller through the sleeve, the flow pipe and the No. 2 rotary joint in sequence until it enters the water-cooling circulation unit.

[0015] Preferably, the grinding assembly further comprises a transfer tube, the outer end surface of the transfer tube is fixedly connected to the No. 1 rotary joint, and one end of the transfer tube away from the No. 1 rotary joint is rotatably connected to a hollow tube;

[0016] A splitter head, used to divide the cooling water into three equal parts, and fixedly connected to the inside of the hollow tube, wherein a cross-sectional end of the splitter head is fixedly connected to the rotating shaft;

[0017] The outer sides of the rotating shaft and the hollow tube are both fixedly connected with a three-pronged tube, wherein the three-pronged tube and the hollow tube are communicated with each other.

[0018] Preferably, an electric push rod is fixedly installed inside the first grinding roller, and a cooling plate tube is fixedly connected to the output end of the electric push rod;

[0019] A fixing strip is fixedly connected inside the first grinding roller, and an embedded ring is fixedly connected to one end of the top strip away from the first grinding roller, wherein both ends of the embedded ring are embedded and matched with the cooling half pipe;

[0020] The space enclosed by the interlocking ring and the cooling half pipe is used to control the flow rate of cooling water and the range of heat contact.

[0021] Preferably, the outer end of the cooling half pipe is extruded and adapted with a tough leak-proof sleeve, the tough leak-proof sleeve is fastened to the outer side of the first grinding roller by bolts, the outer end surface of the cooling half pipe is fixedly connected with a conical bellows, and one end of the conical bellows away from the cooling half pipe is fixedly connected to the three-head pipe;

[0022] A through-tube is fixedly installed inside the first grinding roller, the outer end surface of the through-tube is connected to the three-head tube, and one end of the through-tube away from the three-head tube is connected to the center of the first grinding roller.

[0023] Preferably, the interior of the through-tube is fixedly connected with an inner fixing plate, the outer side of the inner fixing plate is plugged with an engaging block, the outer side of the engaging block is fixedly connected with a sliding ring, the sliding ring is slidably adapted inside the through-tube, the surface of the through-tube has a straight slot hole, and an extension rod is slidably adapted in the straight slot hole, one end of the extension rod is fixedly connected with the sliding ring, both sides of the extension rod are symmetrically connected with leak-proof folding sheets, and the end of the leak-proof folding sheet away from the extension rod is fixedly connected with the through-tube;

[0024] An internal groove is provided inside the first grinding roller, and a sliding rod is slidably adapted inside the internal groove. One end of the sliding rod is fixedly connected to the cooling half-tube, and the end of the sliding rod away from the cooling half-tube is fixedly connected to the extension rod.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The inner diameter of the water inlet end of the tapered bellows is larger than that of the water outlet end, because the inner diameter of the inner cavity surrounded by the cooling half pipe and the fitting ring is smaller than the inner diameter of the water inlet end of the tapered bellows. Therefore, the tapered bellows in this state plays the role of installing a tapered pipe between the thick pipe and the thin pipe, so that the water flow can gradually transition and avoid sudden changes in the pipe diameter, so as to reduce the damage to the pipe due to the impact of water flow and large resistance at the junction of the thick pipe and the thin pipe.

[0027] 2. When the cooling water flow rate becomes faster and the cooling range becomes smaller, during the grinding process, the contact area between the two grinding rollers and the part in contact with the powder will generate a lot of heat, and the heat distribution is uneven. The fast water flow rate can quickly take away the heat from these local high-temperature areas and prevent the roller surface from overheating locally.

[0028] 3. When the cooling water flow rate slows down and the cooling range becomes larger, because different powders have different thermal conductivity and specific heat capacity, for some powders with poor thermal conductivity or prone to physical changes at lower temperatures, the use of water with a large cooling range and slow flow rate can provide a milder cooling environment, avoiding problems such as agglomeration and deterioration of the powder due to excessive cooling, which is conducive to maintaining the characteristics and quality of the powder.

[0029] 4. The water flow rate can be switched between slow with a large cooling range and fast with a small cooling range, which has the following functions: A. External sensors can be added to flexibly adapt to working condition changes; B. Optimize the cooling effect and energy consumption; C. The switchable cooling method can better handle various emergencies, such as local overheating caused by equipment failures and temperature fluctuations caused by uneven powder supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the external structure of a flour mill with a water cooling mechanism according to the present invention.

[0031] Figure 2 It is a schematic diagram of the structure of the grinding component of the present invention with the end cover removed.

[0032] Figure 3 It is a schematic diagram of the internal components of the grinding component of the present invention.

[0033] Figure 4 It is a schematic diagram of the side view structure of the internal components of the present invention.

[0034] Figure 5 It is a schematic diagram of the structure of the internal structure of the present invention with the pulley removed.

[0035] Figure 6 It is a schematic diagram of the structure of the grinding roll of the present invention.

[0036] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of the structure at A in the present invention.

[0037] Figure 8 It is a schematic diagram of the sectional view of the front end of the grinding roll of the present invention.

[0038] Figure 9 It is a schematic diagram of the inclined sectional view of the front end of the grinding roll of the present invention.

[0039] Figure 10 For the present invention Figure 9 The enlarged schematic diagram of the structure at B in the present invention.

[0040] Figure 11 It is a schematic diagram of the internal components of the through pipe of the present invention.

[0041] Figure 12 It is a schematic diagram of the transverse sectional view of the grinding roll of the present invention.

[0042] Figure 13 It is a schematic diagram of the sectional view of the cross section of the grinding roll of the present invention.

[0043] Figure 14 It is a schematic diagram of the transverse full sectional view of the grinding roll of the present invention.

[0044] In the figure: 1, water-cooled circulation unit; 2, water flow proportion valve; 3, first rotary joint; 4, powder grinding assembly; 5, second rotary joint; 6, water inlet pipe; 7, water outlet pipe; 41, outer shell; 42, roller support body; 43, rotating shaft; 44, first grinding roller; 45, second grinding roller; 46, servo motor; 47, first pulley; 48, belt; 49, second pulley; 40, third pulley; 401, short connecting pipe; 402, sleeve connecting pipe; 403, surge pipe; 404, rotating connecting pipe; 405, hollow pipe; 406, flow dividing head; 407, three-way pipe; 408, conical corrugated pipe; 409, tough leak-proof sleeve; 400, inner fixing plate; 51, sliding ring; 52, extension rod; 53, fitting plug; 54, leak-proof folding piece; 55, internal groove; 56, sliding folding rod; 57, electric push rod; 58, cooling half pipe; 59, fixing strip; 50, fitting ring; 501, through pipe. Detailed implementation manners

[0045] Next, in combination with the drawings and the detailed implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment. It should be known that the described embodiments are only a part of the embodiments of the present invention, rather than all of 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 scope of protection of the present invention.

[0046] Please refer to Figures 1 to 14 The present invention provides a technical solution: As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, it includes a water-cooled circulation unit 1 for circulating and heat-exchanging cooling water. The water outlet of the water-cooled circulation unit 1 is fixedly connected to a water inlet pipe 6;

[0047] A water flow proportion valve 2 for controlling the water flow rate. Both ends of the water flow proportion valve 2 are connected to the water inlet pipe 6, and a first rotary joint 3 is rotatably installed at the top of the water inlet pipe 6;

[0048] A powder grinding assembly 4 for grinding materials into powder and cooling the rollers. The powder grinding assembly 4 is connected to the first rotary joint 3;

[0049] One end of the milling component 4 away from the first rotary joint 3 is provided with a second rotary joint 5. At the bottom of the second rotary joint 5, a water outlet pipe 7 is rotatably installed. One end of the water outlet pipe 7 away from the second rotary joint 5 is connected to the water inlet of the water-cooled circulation unit 1. During normal milling of the mill, the working temperature of the grinding roller is about 60 degrees. The working temperature of the grinding roller of the water-cooled mill is lower than 40 degrees, which will not cause thermal damage to wheat protein, ensuring that the quality of the protein is not damaged. At the same time, the low-temperature processing retains the wheat fragrance. The water-cooling process is very suitable for the production of high-grade flour such as small molecules.

[0050] The milling component 4 includes a housing 41. The two ends of the housing 41 are respectively sleeved with the first rotary joint 3 and the second rotary joint 5. A feed inlet is provided at the top of the housing 41, and a discharge outlet is provided at the bottom of the housing 41;

[0051] At the bottom of the inner cavity of the housing 41, a roller support body 42 is fixedly installed. At both ends of the roller support body 42, a rotating shaft 43 is respectively rotatably installed. The number of the rotating shafts 43 is two, and a first grinding roller 44 and a second grinding roller 45 are respectively fixedly connected to the outer sides of the rotating shafts 43;

[0052] The outside of the roller support body 42 is connected to a servo motor 46 through a frame. The output end of the servo motor 46 is connected to a first pulley 47. The outside of the first pulley 47 is drivingly connected to a belt 48. The inner side of the belt 48 away from the first pulley 47 is drivingly connected to a second pulley 49;

[0053] The outside of the belt 48 is drivingly connected to a third pulley 40. The third pulley 40 and the second pulley 49 rotate in the opposite direction and the center is downward. The centers of the third pulley 40 and the second pulley 49 are both fixedly connected to the rotating shaft 43; By starting the servo motor 46, the first pulley 47 connected to its output end will drive the belt 48 to transmit. The other side of the inner cavity of the belt 48 is drivingly connected to the second pulley 49, and the outside of the belt 48 is drivingly connected to the third pulley 40. Therefore, the second pulley 49 and the third pulley 40 will rotate reversely and grind the material fed into the inlet at the top of the housing 41.

[0054] A short connecting pipe 401 is fixedly connected to the outer end face of the first grinding roller 44. One end of the short connecting pipe 401 away from the first grinding roller 44 is fixedly connected to a sleeve connecting pipe 402. One side of the sleeve connecting pipe 402 away from the short connecting pipe 401 is fixedly connected to a surge pipe 403. One end of the surge pipe 403 away from the sleeve connecting pipe 402 is fixedly connected to the second rotary joint 5;

[0055] The sleeve connecting pipe 402 is used to sequentially pass the water inside the first grinding roller 44 and the second grinding roller 45 through the sleeve connecting pipe 402, the surge pipe 403 and the second rotary joint 5 until it enters the water-cooled circulation unit 1.

[0056] As Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 as shown, the grinding component 4 further includes a transfer pipe 404. The outer end face of the transfer pipe 404 is fixedly connected to the first rotary joint 3, and one end of the transfer pipe 404 away from the first rotary joint 3 is rotatably connected to a hollow pipe 405;

[0057] A flow divider head 406, which is used to equally divide the cooling water into three parts and is fixedly connected inside the hollow pipe 405. The cross-sectional end of the flow divider head 406 is fixedly connected to the rotating shaft 43;

[0058] Both the outer sides of the rotating shaft 43 and the hollow pipe 405 are fixedly connected with three-way pipes 407, and the three-way pipe 407 is communicated with the hollow pipe 405;

[0059] An electric push rod 57 is fixedly installed inside the first grinding roller 44, and the output end of the electric push rod 57 is fixedly connected to a cooling plate pipe 58;

[0060] A fixing strip 59 is fixedly connected inside the first grinding roller 44. One end of the top strip 59 away from the first grinding roller 44 is fixedly connected to a fitting ring 50, and both ends of the fitting ring 50 are fitted and matched with the cooling half pipes 58;

[0061] The space enclosed by the fitting ring 50 and the cooling half pipes 58 is used to control the flow rate of the cooling water and the range of thermal contact;

[0062] The outer end of the cooling half pipe 58 is extruded with a tough leak-proof sleeve 409, wherein the tough leak-proof sleeve 409 has a certain toughness and permeability, and is fastened to the outer side of the No. 1 grinding roller 44 by bolts, and the outer end face of the cooling half pipe 58 is fixedly connected with a conical bellows 408, and the end of the conical bellows 408 away from the cooling half pipe 58 is fixedly connected to the three-head pipe 407; by starting the water-cooling circulation unit 1, the water inlet pipe 6 connected to the water outlet end thereof will have cooling water gushing out. Inlet, then adjust the water flow proportional valve 2 to adjust the flow rate and flow of water, wherein the other end of the water inlet pipe 6 is connected to the No. 1 rotary joint 3, so the cooling water will enter the transfer pipe 404 through the No. 1 rotary joint 3, and the other end of the transfer pipe 404 is transferred to the hollow pipe 405, so the cooling water will enter the hollow pipe 405, wherein the hollow pipe 405 is fixedly installed with a diverter 406, at this time the diverter 406 will divide the cooling water into three equal streams and The cooling water enters the three chambers of the three-head pipe 407 respectively, wherein the diverter 406 divides the inner cavity of the three-head pipe 407 into three chambers, and then the cooling water in the three-head pipe 407 enters the No. 1 grinding roller 44 through the conical bellows 408. The No. 1 grinding roller 44 is provided with a cooling half pipe 58 and a fitting ring 50, so the cooling water enters the chamber surrounded by the cooling half pipe 58 and the fitting ring 50, and cools the No. 1 grinding roller 44 during processing. After the cooling treatment, the cooling water is discharged from the tail end of the cooling half-pipe 58 and the interlocking ring 50, and enters the short pipe 401, and the other end of the short pipe 401 is connected to the sleeve pipe 402, and the other side of the sleeve pipe 402 is connected to the flow pipe 403. Therefore, the cooling water discharged from the flow pipe 403 will enter the No. 2 rotary joint 5, wherein the other end of the No. 2 rotary joint 5 is connected to the water outlet pipe 7, and finally the cooling water will flow back to the water-cooled circulation unit 1.

[0063] The inner diameter of the water inlet end of the tapered bellows 408 is larger than the inner diameter of the water outlet end, because the inner diameter of the inner cavity surrounded by the cooling half pipe 58 and the interlocking ring 50 is smaller than the inner diameter of the water inlet end of the tapered bellows 408. Therefore, the tapered bellows 408 in this state plays the role of installing a tapered pipe between the thick pipe and the thin pipe, allowing the water flow to gradually transition and avoid sudden changes in the pipe diameter, so as to reduce the damage to the pipe due to the impact of water flow and large resistance at the junction of the thick pipe and the thin pipe.

[0064] A through-tube 501 is fixedly installed inside the No. 1 grinding roller 44, and the outer end surface of the through-tube 501 is connected to the three-headed tube 407, and the end of the through-tube 501 away from the three-headed tube 407 is connected to the center of the No. 1 grinding roller 44; when the fluid enters the thin tube from the thick tube, it can be concluded according to the continuity equation and the Bernoulli equation: according to the continuity equation Q=vA, when the fluid is incompressible and the flow rate is constant, the cross-sectional area A of the thick tube is large and the cross-sectional area of the thin tube is small, so the flow velocity v of the fluid will increase after entering the thin tube; from the Bernoulli equation p+1 / 2ρv2+ρgh=constant when h remains unchanged at the same horizontal height, it can be seen that as the flow velocity increases, the kinetic energy of the fluid increases. In order to maintain the conservation of total energy, the pressure energy will decrease, so the pressure p of the fluid in the thin tube will decrease, so the cooling water in the cooling half-tube 58 and the interlocking ring 50 will have a faster flow rate. Therefore, during the grinding process, a large amount of heat will be generated in the contact area between the two grinding rollers and the part in contact with the powder, and the heat distribution is uneven. The fast water flow can quickly take away the heat from these local high temperature areas and prevent the roller surface from overheating. For example, when grinding hard powder, the pressure concentration area on the grinding roller surface is prone to high temperature. The fast water flow can cool it in time to avoid the roller surface material softening and aggravated wear due to high temperature, thus ensuring the normal working performance and service life of the grinding roller.

[0065] An inner fixing plate 400 is fixedly connected inside the through pipe 501. A fitting plug 53 is inserted on the outer side of the inner fixing plate 400. A sliding ring 51 is fixedly connected to the outer side of the fitting plug 53. The sliding ring 51 is slidably fitted inside the through pipe 501. There are straight groove holes on the surface of the through pipe 501, and an extension rod 52 is slidably fitted in the straight groove holes. One end of the extension rod 52 is fixedly connected to the sliding ring 51. Leak-proof folding pieces 54 are symmetrically connected to both sides of the extension rod 52. The leak-proof folding pieces 54 are foldable and play a role in preventing the cooling water inside the through pipe 501 from overflowing outward. One end of the leak-proof folding piece 54 away from the extension rod 52 is fixedly connected to the through pipe 501; Start the electric push rod 57, so that the cooling half pipe 58 connected to its output end will move towards both sides, and the fitting ring 50 embedded inside it will be exposed. The fitting ring 50 has a certain toughness. At this time, the volume of the cavity formed by the cooling half pipe 58 and the fitting ring 50 will become larger until it is larger than the inner diameter of the water inlet end of the conical corrugated pipe 408. Therefore, when the fluid enters from the thin pipe into the thick pipe, according to the continuity equation and Bernoulli's equation, it can be obtained that: the cooling water in the cooling half pipe 58 and the fitting ring 50 will slow down in flow velocity and increase in pressure. In addition, as the cooling half pipe 58 moves towards both sides, the sliding folding rod 56 connected to its outer side will move outward along the internal setting groove 55. One end of the sliding folding rod 56 is connected to the extension rod 52, and the other end of the extension rod 52 is connected to the sliding ring 51. Therefore, the extension rod 52 will move downward along the surface of the through pipe 501 and drive the sliding ring 51. The inner side of the sliding ring 51 is connected to the fitting plug 53. At first, the fitting plug 53 is fitted with the inner fixing plate 400 and blocks the inside of the through pipe 501 at the same time. As the sliding ring 51 drives the fitting plug 53 to move downward, the round hole on the inner fixing plate 400 will be opened. At this time, part of the water flow in the three-way pipe 407 will enter the through pipe 501. At the same time, the water cooling circulation unit 1 will also sense the start of the electric push rod 57 and increase the pouring of water flow. Finally, there will be water flow surging in the through pipe 501, so as to increase the amount of water cooling inside the grinding roller and increase the heat dissipation intensity.

[0066] An internal groove 55 is provided inside the first grinding roll 44. A sliding rod 56 is slidably fitted inside the internal groove 55. One end of the sliding rod 56 is fixedly connected to the cooling half-tube 58, and the end of the sliding rod 56 away from the cooling half-tube 58 is fixedly connected to the extension rod 52. Functions of slow water flow rate but large cooling range: A. In the case of a large cooling range with slow water flow, the grinding roll can be cooled more gently, reducing the thermal shock caused by rapid cooling. For some grinding roll materials with special materials or sensitive to thermal stress, this cooling method can protect the performance of the materials, prevent cracks or microstructural changes, and extend the service life of the grinding roll; B. Different powder materials have different thermal conductivity and specific heat capacity. For some powder materials with poor thermal conductivity or prone to physical changes at relatively low temperatures, using water flow with a large cooling range and slow flow rate can provide a relatively gentle cooling environment, avoiding problems such as caking and deterioration of the powder materials due to rapid cooling, and is beneficial to maintaining the characteristics and quality of the powder materials.

[0067] In addition, the switching between slow water flow rate but large cooling range and fast water flow rate but small cooling range has the following functions: A. External sensors can be added to flexibly adapt to changes in working conditions; B. Optimize the cooling effect and energy consumption; C. The switchable cooling method can better cope with various emergencies, such as local overheating caused by equipment failures and temperature fluctuations caused by uneven powder supply.

[0068] When the present invention is in use: first, start the water-cooling circulation unit 1, so that cooling water will flow into the water inlet pipe 6 connected to the water outlet end thereof, and then adjust the water flow proportional valve 2 to adjust the water flow rate and flow rate, wherein the other end of the water inlet pipe 6 is connected to the No. 1 rotary joint 3, so the cooling water will enter the transfer pipe 404 through the No. 1 rotary joint 3, and the other end of the transfer pipe 404 is transferred to the hollow pipe 405, so the cooling water will enter the hollow pipe 405, wherein a diverter 406 is fixedly installed in the hollow pipe 405, at this time, the diverter 406 will divide the cooling water into three equal streams and enter the three chambers of the three-head pipe 407 respectively, wherein the diverter 406 will divide the inner cavity of the three-head pipe 407 into three chambers, and then the cooling water inside the three-head pipe 407 Water will enter the No. 1 grinding roller 44 through the conical bellows 408, wherein the No. 1 grinding roller 44 is respectively provided with a cooling half-pipe 58 and a mosaic ring 50, so that the cooling water will enter the chamber surrounded by the cooling half-pipe 58 and the mosaic ring 50, and cool down the No. 1 grinding roller 44 during processing, and then the cooling water will be discharged from the tail end of the cooling half-pipe 58 and the mosaic ring 50, and enter the short pipe 401, and the other end of the short pipe 401 is connected to the sleeve pipe 402, and the other side of the sleeve pipe 402 is connected to the flow pipe 403, so the cooling water discharged from the flow pipe 403 will enter the No. 2 rotary joint 5, wherein the other end of the No. 2 rotary joint 5 is connected to the water outlet pipe 7, and finally the cooling water will flow back to the water-cooled circulation unit 1.

[0069] By starting the servo motor 46, the No. 1 pulley 47 connected to its output end will drive the belt 48, wherein the other side of the inner cavity of the belt 48 is connected to the No. 2 pulley 49, and the outer side of the belt 48 is connected to the No. 3 pulley 40. Therefore, the No. 2 pulley 49 and the No. 3 pulley 40 will rotate in the opposite direction and grind the material put into the top feed port of the outer shell 41.

[0070] Start the electric push rod 57, so that the cooling half pipe 58 connected to its output end will move towards both sides, and the fitting ring 50 embedded inside it will be exposed. At this time, the volume of the cavity formed by the cooling half pipe 58 and the fitting ring 50 will become larger until it is larger than the inner diameter of the water inlet end of the conical bellows 408. Therefore, when the fluid enters the thick pipe from the thin pipe, according to the continuity equation and Bernoulli equation, it can be obtained that the cooling water in the cooling half pipe 58 and the fitting ring 50 will have a slower flow rate and a larger pressure. In addition, as the cooling half pipe 58 moves towards both sides, the sliding rod 56 connected to its outer side will move outwards along the internal groove 55. One end of the sliding rod 56 is connected to the extension rod 52, and the other end of the extension rod 52 is connected to the sliding ring 51. Therefore, the extension rod 52 will move downwards along the surface of the through pipe 501 and drive the sliding ring 51. The inner side of the sliding ring 51 is connected to the fitting plug 53. At the beginning, the fitting plug 53 is fitted with the inner fixing plate 400 and blocks the inside of the through pipe 501. As the sliding ring 51 drives the fitting plug 53 to move downwards, the round hole on the inner fixing plate 400 will be opened. At this time, part of the water flow in the three-way pipe 407 will enter the through pipe 501. At the same time, the water-cooled circulation unit 1 will also sense the start of the electric push rod 57 and increase the water injection. Finally, there will be water flow surging in the through pipe 501.

[0071] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the protection scope of the present invention. Those of ordinary skill in the art, starting from the above concept, without creative labor, all kinds of transformations made fall within the protection scope of the present invention.

Claims

1. A flour mill with a water cooling mechanism, characterized in that, include: A water-cooling circulation unit for circulating cooling water and performing heat exchange treatment, wherein a water outlet of the water-cooling circulation unit is fixedly connected to a water inlet pipe; A water flow proportional valve for controlling the water flow, both ends of the water flow proportional valve are connected to the water inlet pipe, and a No. 1 rotary joint is rotatably installed on the top of the water inlet pipe; A grinding assembly for grinding the material into powder and cooling the roller, the grinding assembly being connected to the first rotary joint; A second rotary joint is arranged at one end of the grinding assembly away from the first rotary joint, a water outlet pipe is rotatably installed at the bottom of the second rotary joint, and one end of the water outlet pipe away from the second rotary joint is connected to the water inlet of the water-cooling circulation unit.

2. The flour mill with a water cooling mechanism according to claim 1, wherein: The grinding assembly comprises an outer shell, two ends of which are respectively connected with the first rotary joint and the second rotary joint, a feed inlet is provided at the top of the outer shell, and a discharge outlet is provided at the bottom of the outer shell.

3. The flour mill with a water cooling mechanism according to claim 2, wherein: A support roller frame is fixedly installed at the bottom of the inner cavity of the outer shell, and rotating shafts are rotatably installed at both ends of the support roller frame. There are two rotating shafts, and the outer sides of the rotating shafts are fixedly connected to the first grinding roller and the second grinding roller.

4. A flour mill with a water cooling mechanism according to claim 2, characterized in that: The outer side of the support roller frame is connected to a servo motor through a frame, the output end of the servo motor is connected to a first pulley, the outer side of the first pulley is connected to a belt, and the inner side of the belt away from the first pulley is connected to a second pulley.

5. A flour mill with a water cooling mechanism according to claim 4, characterized in that: The outer side of the belt is connected to the third pulley for transmission, wherein the third pulley and the second pulley rotate in opposite directions with the center facing downward, and the centers of the third pulley and the second pulley are fixedly connected to the rotating shaft.

6. The flour mill with a water cooling mechanism according to claim 3, characterized in that: The outer end surface of the No. 1 grinding roller is fixedly connected with a short pipe, the end of the short pipe away from the No. 1 grinding roller is fixedly connected with a sleeve pipe, the side of the sleeve pipe away from the short pipe is fixedly connected with a surge pipe, and the end of the surge pipe away from the sleeve pipe is fixedly connected to the No. 2 rotary joint; The sleeve is used to pass the water inside the No. 1 grinding roller and the No. 2 grinding roller through the sleeve, the flow pipe and the No. 2 rotary joint in sequence until it enters the water-cooling circulation unit.

7. A flour mill having a water cooling mechanism according to claim 1, characterized in that: The grinding assembly further comprises a transfer tube, the outer end surface of which is fixedly connected to the first rotary joint, and one end of the transfer tube away from the first rotary joint is rotatably connected to a hollow tube; A splitter head, used to divide the cooling water into three equal parts, and fixedly connected to the inside of the hollow tube, wherein a cross-sectional end of the splitter head is fixedly connected to the rotating shaft; The outer sides of the rotating shaft and the hollow tube are both fixedly connected with a three-pronged tube, wherein the three-pronged tube and the hollow tube are communicated with each other.

8. A flour mill with a water cooling mechanism according to claim 3, characterized in that: An electric push rod is fixedly installed inside the first grinding roller, and a cooling plate tube is fixedly connected to the output end of the electric push rod; A fixing strip is fixedly connected inside the first grinding roller, and an embedded ring is fixedly connected to one end of the top strip away from the first grinding roller, wherein both ends of the embedded ring are embedded and matched with the cooling half pipe; The space enclosed by the fitting ring and the cooling half pipe is used to control the flow rate of the cooling water and the range of thermal contact.

9. The flour mill with a water cooling mechanism according to claim 8, wherein: A resilient leak-proof sleeve is extruded and fitted at the outer end of the cooling half pipe. The resilient leak-proof sleeve is fixedly connected to the outside of the first grinding roller by bolts. A conical bellows is fixedly connected to the outer end face of the cooling half pipe. One end of the conical bellows away from the cooling half pipe is fixedly connected to the three-way pipe. A through pipe is fixedly installed inside the first grinding roller. The outer end face of the through pipe is connected to the three-way pipe. One end of the through pipe away from the three-way pipe is communicated with the center of the first grinding roller.

10. A flour mill with a water cooling mechanism according to claim 9, characterized in that: An inner fixing plate is fixedly connected inside the through pipe. A fitting plug block is inserted on the outside of the inner fixing plate. A sliding ring is fixedly connected to the outside of the fitting plug block. The sliding ring is slidably fitted inside the through pipe. There are straight groove holes on the surface of the through pipe, and an extension rod is slidably fitted in the straight groove holes. One end of the extension rod is fixedly connected to the sliding ring. Leak-proof folding pieces are symmetrically connected to both sides of the extension rod. One end of the leak-proof folding piece away from the extension rod is fixedly connected to the through pipe. An internal slot is opened inside the first grinding roller. A sliding folding rod is slidably fitted inside the internal slot. One end of the sliding folding rod is fixedly connected to the cooling half pipe. One end of the sliding folding rod away from the cooling half pipe is fixedly connected to the extension rod.

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