Tubular cooler

Abstract

The invention relates to the technical field of solidification type yogurt coolers, in particular to a tubular cooler which comprises a mounting frame and cooling pipes, the cooling pipes are connected through double-end bent pipes to form a rotary flow channel, and cooling cavity connecting pipes are arranged at the two ends of each cooling pipe respectively. An upper cooling pipe and a lower cooling pipe are communicated through a communicating pipe to form a rotary cooling water flow channel, a rotor pump is used for pushing the solidified yogurt subjected to primary fermentation to flow and cool in the pipeline, the solidified yogurt enters another fermentation tank, and the temperature of feed liquid is controlled within the range of 25-30 DEG C for secondary re-fermentation. According to the technical scheme, solidified yoghurt which is mature through primary fermentation enters another fermentation tank through a tubular cooler by using a rotor pump for secondary fermentation.

Description

Technical Field

[0001] The invention relates to the technical field of solidified yogurt coolers, in particular to a tubular cooler. Background Art

[0002] Yogurt powder is a powdered product made by spray drying fermented yogurt. It retains the main nutrients and active beneficial bacteria in yogurt, and is easy to store and transport, and has the characteristics of extending the shelf life. Traditional yogurt processing is to go through the acceptance of raw materials and auxiliary materials, milk purification, preheating, batching, standardization, homogenization, sterilization, cooling, inoculation of bacteria, and storage (storage temperature 2-6℃) after fermentation and maturity. The yogurt required for yogurt powder production needs to be cooled to 25-30℃ immediately after the initial fermentation and maturity before entering the secondary fermentation, so the yogurt after the initial fermentation needs to be quickly cooled.

[0003] For this purpose, a rotor pump is needed to push the coagulated yogurt that has been initially fermented and matured through a tubular cooler, so that the yogurt can flow quickly and cool down to another fermentation tank, and the material liquid temperature is controlled within the range of 25-30°C for secondary fermentation, and then the yogurt powder is made by demulsification, spraying, and low-temperature drying. The use of a tubular cooler can solve the problem of the difficulty of cooling the coagulated yogurt in the fermentation tank, while ensuring that the yogurt temperature is uniform and cools down quickly, thereby improving the taste quality of the yogurt after secondary fermentation. However, when the tubular cooler is used for cooling, the coolant is coated on the outside of the material pipe for heat exchange, but the temperature of the side of the coolant close to the material pipe is higher, and there are uneven temperature areas during the flow of the coolant, resulting in uneven cooling effect on the material, and impurities are easily generated on the surface of the material pipe during the cooling process of the coolant on the surface of the material pipe. Impurities attached to the surface of the material pipe will affect the efficiency of heat conduction and the uniformity of cooling. Uneven cooling will affect the subsequent taste of the material. Summary of the invention

[0004] In view of the above problems, it is necessary to provide a tubular cooler to solve the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: A tubular cooler comprises a mounting frame and a plurality of cooling pipes mounted on the mounting frame. The cooling pipes are connected by double-ended elbows to form a rotary flow channel. The cooling pipes located at the top of the mounting frame are respectively connected to a feed pipe and a discharge pipe. An inner pipe is coaxially arranged in the cooling pipe. Both ends of the inner pipe are connected to the double-ended elbow, the feed pipe and the discharge pipe. The space outside the inner pipe forms a cooling cavity. Vertical cooling cavity connecting pipes are respectively arranged at both ends of the cooling pipe. The cooling cavity connecting pipe at one end of the cooling pipe located at the top of the mounting frame is connected to a cooling water delivery pipe. The cooling chamber connecting pipes of the lower two cooling pipes are connected through a connecting pipe to form a rotary cooling water flow channel, and a cooling water output pipe is arranged at the cooling chamber connecting pipe of the cooling pipe located at the bottom of the mounting frame; a spiral blade is arranged in the cooling pipe, and sleeves arranged at both ends of the spiral blade are sleeved on the outside of the inner pipe, and the spiral blade fits the inner wall and the outer wall of the cooling pipe; a rotating shaft is coaxially installed in the connecting pipe, and a stirring blade is arranged on the rotating shaft, and a mounting seat is arranged outside the connecting pipe, and a rotating drive unit for driving the rotating shaft and the spiral blade to rotate around its own axis is arranged on the mounting seat.

[0006] Preferably, the axis of the cooling water output pipe is arranged horizontally, and a flange joint for connecting to a connecting pipe arranged on the bottom cooling pipe of the mounting frame is arranged on the upper side of the cooling water output pipe; a rotating shaft is coaxially arranged inside the cooling water output pipe, and a plurality of partitions extending radially along the rotating shaft are arranged on the circumference of the rotating shaft, and the top of the partition fits the inner wall of the cooling water output pipe; a liquid outlet channel and a slag outlet channel extending along the tangential direction of the cooling water output pipe are arranged on both sides of the bottom of the cooling water output pipe, and an arc-shaped filter screen with the same curvature as the inner wall of the cooling water output pipe is arranged at the liquid outlet channel, a liquid collecting box is arranged at the end of the liquid outlet channel away from the cooling water output pipe, and a slag collecting box is arranged at the end of the slag outlet channel away from the cooling water output pipe; a rotating drive is fixedly installed on the outside of the cooling water output pipe, and the working end of the rotating drive is transmission-connected to the rotating shaft, and the rotating drive drives the rotating shaft to rotate around its own axis.

[0007] Preferably, a collar is coaxially arranged on the outside of the rotating shaft, and the collar is connected to the rotating shaft by a plurality of connecting plates. The inner diameter of the collar is larger than the inner diameter of the connecting tube. The collar is located in a mounting tube arranged in the middle of the connecting tube, and limiting rings fitting the outer wall of the collar are arranged at the upper and lower ends of the mounting tube; a tooth groove is arranged on the outer wall of the collar, and the tooth groove is located between the upper and lower limiting rings. The rotation driving unit includes a driving gear rotatably mounted on the mounting seat, and the axis of the driving gear is arranged parallel to the tooth groove. The driving gear passes through a connecting port arranged on one side of the mounting tube and is meshed with the tooth groove of the collar. The rotation driving unit also includes a first rotation driver that drives the driving gear to rotate, and the first rotation driver is fixedly mounted on the mounting seat.

[0008] Preferably, the sleeves at both ends of the spiral blade are provided with bevel tooth grooves surrounding the sleeves, and shaft tubes that are in the same straight line as the driving gear are provided at both ends of the cooling tube. A bevel gear is rotatably installed on the shaft tube, and a shaft rod at the axis of the bevel gear passes through the shaft tube and extends to the outside of the cooling tube. The bevel gear is meshingly connected with the bevel tooth grooves. When one end of the shaft rod located outside the cooling tube is transmission-connected to the rotating drive unit, the rotation of the bevel gear drives the spiral blade to rotate.

[0009] Preferably, a connecting disk is coaxially provided at one end of the shaft rod located outside the cooling tube, the upper side of the connecting disk is in contact with the bottom end of the shaft tube, and an insertion hole is coaxially provided on the lower side of the connecting disk, and a vertically extending baffle is provided on the inner wall of the insertion hole; a spline groove is provided at the axis of the driving gear, a spline shaft is slidably installed in the spline groove, and a linear driver for driving the spline shaft to move in a vertical direction is fixedly installed on the mounting seat; a pin is coaxially provided at the top end of the spline shaft, and at least one elastic top block is elastically installed on the circumferential side of the pin, and when the pin is inserted into the insertion hole of the connecting disk, the elastic top block contacts the baffle to drive the bevel gear and the rotating shaft to rotate synchronously.

[0010] Preferably, the diameter of the plug is smaller than the straight-line distance between the axis of the insertion hole and the surface of the baffle, and the thickness of the elastic top block protruding from the side of the plug is not less than the difference between the radius of the insertion hole and the radius of the plug; the upper and lower ends of the elastic top block are provided with bevel angles.

[0011] Preferably, the working end of the linear drive is arranged to move in the vertical direction, and the linear drive is fixedly mounted below the mounting seat, and the mounting seat is provided with a through hole which is in the same straight line as the driving gear, and the working end of the linear drive passes through the through hole to contact the bottom end of the spline shaft.

[0012] Preferably, a ball is rotatably mounted at a position where the bottom end of the spline shaft contacts the working end of the linear drive, and the surface of the ball protrudes from the bottom surface of the spline shaft.

[0013] Preferably, a drawer box is slidably installed in the slag collecting box.

[0014] Preferably, a plugging head is installed at the cooling chamber connecting pipe on the cooling pipe that is not connected to the connecting pipe, and the plugging head is used to plug the cooling chamber connecting pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the spiral blades in the cooling tube of the present invention fit the outer wall of the inner tube and the inner wall of the cooling tube. When the coolant flows in the spiral channel formed by the spiral blades, the coolant can be in contact with the inner tube for a longer time and can be mixed while moving, thereby ensuring that the temperature of the coolant is uniform. When the coolant enters the connecting tube through the cooling chamber connecting tube and flows into the cooling tube below, the rotating drive unit in the connecting tube can drive the rotating shaft to drive the stirring blade to rotate, thereby stirring the coolant passing through the connecting tube, making the temperature more uniform after mixing, thereby ensuring the uniformity of the heat absorption effect on the subsequent inner tube, and allowing the material in the inner tube to be evenly cooled.

[0016] Secondly, the spiral blades in the present invention are mounted on the outside of the inner tube through sleeves at both ends. The rotary drive unit can drive the spiral blades to rotate around the axis of the inner tube. During the rotation, the spiral blades can scrape off impurities formed on the outer wall of the inner tube and the inner wall of the cooling tube. The scraped impurities flow with the coolant, thereby preventing impurities attached to the outside of the inner tube from affecting the cooling efficiency of the coolant on the material.

[0017] Thirdly, when the coolant in the present invention carries impurities and flows to the cooling water output pipe at the lowest end, it is located between two adjacent partitions on the rotating shaft. When the coolant between the partitions moves with the rotating shaft to the liquid outlet channel, the coolant passes through the arc filter screen, and the impurities are filtered by the arc filter screen. In the subsequent movement of the partition plates, the partition plates are pushed toward the slag outlet channel, and the impurities accumulate in the slag outlet channel. During the rotation of the rotating shaft, the separation of impurities and coolant is automatically achieved, so that the coolant discharged through the liquid collecting tank does not contain impurities and can be directly recycled to save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of a tubular cooler; Figure 2 It is a side view of a tubular cooler; Figure 3 It is a tubular cooler that runs along the first working state. Figure 2 A cross-sectional view at AA; Figure 4 yes Figure 3 A partial enlarged view of point B; Figure 5 yes Figure 3 A partial enlarged view of point C; Figure 6 It is a tubular cooler that runs along the first working state. Figure 2 A three-dimensional cross-sectional view at AA; Figure 7 yes Figure 6 A partial enlarged view of point D; Figure 8 It is a tubular cooler that runs along the second working state. Figure 2A cross-sectional view at AA; Fig. 9 yes Figure 8 A local enlarged view of point E; Fig.10 It is a stereoscopic diagram of a connecting pipe of a tubular cooler; Fig.11 A three-dimensional diagram of the rotating shaft of a tubular cooler.

[0019] The numbers in the figure are: 1, mounting frame; 2, cooling pipe; 21, double-end elbow; 22, feed pipe; 23, discharge pipe; 24, inner pipe; 25, cooling chamber connecting pipe; 251, plugging head; 26, cooling water delivery pipe; 27, spiral blade; 271, sleeve; 272, bevel tooth groove; 273, bevel gear; 274, shaft; 275, connecting plate; 276, plug-in hole; 277, stop bar; 28, shaft tube; 3, connecting pipe; 31, rotating shaft; 311, stirring blade; 312, collar; 313, connecting piece; 314, tooth groove; 32, mounting seat; 321 , through hole; 33, rotary drive unit; 331, driving gear; 332, first rotary drive; 333, spline groove; 334, spline shaft; 335, linear drive; 336, top head; 337, elastic top block; 338, ball; 34, mounting tube; 341, limit ring; 342, connecting port; 4, cooling water output pipe; 41, flange joint; 42, rotating shaft; 421, partition; 43, liquid outlet channel; 431, arc filter; 432, liquid collecting box; 44, slag outlet channel; 441, slag collecting box; 442, drawer box; 45, rotary drive. DETAILED DESCRIPTION

[0020] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figures 1 to 11 : A tubular cooler, comprising a mounting frame 1, and a plurality of cooling tubes 2 mounted on the mounting frame 1, wherein the cooling tubes 2 are connected by double-ended elbows 21 to form a rotary flow channel, wherein the cooling tubes 2 located at the top of the mounting frame 1 are respectively connected to a feed tube 22 and a discharge tube 23, wherein an inner tube 24 is coaxially arranged in the cooling tube 2, and the space outside the inner tube 24 of the cooling tube 2 forms a cooling cavity, wherein vertical cooling cavity connecting tubes 25 are respectively arranged at both ends of the cooling tube 2, wherein the cooling cavity connecting tube 25 at one end of the cooling tube 2 located at the top of the mounting frame 1 is connected to a cooling water delivery tube 26, and the cooling cavity connecting tubes 25 of the upper and lower cooling tubes 2 are connected by connecting tubes 24 to form a cooling cavity. The through pipe 3 is connected to form a rotary cooling water flow channel, and a cooling water output pipe 4 is provided at the cooling cavity connecting pipe 25 of the cooling pipe 2 located at the bottom of the mounting frame 1; a spiral blade 27 is provided in the cooling pipe 2, and sleeves 271 provided at both ends of the spiral blade 27 are sleeved on the outside of the inner pipe 24, and the spiral blade 27 fits the inner wall of the cooling pipe 2 and the outer wall of the inner pipe 24; a rotating shaft 31 is coaxially installed in the connecting pipe 3, and a stirring blade 311 is provided on the rotating shaft 31, and a mounting seat 32 is provided outside the connecting pipe 3, and a rotating drive unit 33 for driving the rotating shaft 31 and the spiral blade 27 to rotate around its own axis is provided on the mounting seat 32.

[0022] When the tubular cooler in the present application is in use, the material enters the cooling tube 2 at the top of the mounting frame 1 through the feed tube 22, and then flows to other cooling tubes 2 through the double-ended elbow 21, and is discharged through the discharge tube 23 after multiple rotations. The staff can set the movement path of the material through the cooling tube 2 and the double-ended elbow 21, and increase the movement time of the material in the cooling tube 2 through the rotary flow channel. The cooling tube 2 in this embodiment is provided with an inner tube 24, and the two ends of the inner tube 24 located at different positions can fit the feed tube 22, the discharge tube 23 or the double-ended elbow 21, so that the material entering the cooling tube 2 is in the inner tube 2. 4, the cooling pipe 2 is located outside the inner pipe 24 to form a cooling cavity, the coolant enters the cooling cavity in the cooling pipe 2 through the cooling water delivery pipe 26 and the cooling cavity connecting pipe 25 on the cooling pipe 2, the coolant absorbs the heat transferred to the inner pipe 24 by the material, and cools the material in the inner pipe 24, the coolant in the cooling pipe 2 located on the upper side flows to the cooling pipe 2 below through the cooling cavity connecting pipe 25 and the connecting pipe 3, the staff can set the connecting pipe 3 at the cooling cavity connecting pipe 25 of the cooling pipe 2 away from the coolant input end, so as to realize the rotary flow of the coolant, and the coolant is in contact with the inner pipe 24 during the flow. In order to avoid the problem of uneven temperature of the coolant after absorbing heat, a spiral blade 27 is provided in the cooling tube 2 in this embodiment. The spiral blade 27 fits the outer wall of the inner tube 24 and the inner wall of the cooling tube 2. When the coolant flows in the spiral channel formed by the spiral blade 27, the coolant can be in contact with the inner tube 24 for a longer time, and the coolant can be mixed when moving, so as to ensure that the coolant temperature is uniform. When the coolant enters the connecting tube 3 through the cooling cavity connecting tube 25 and flows into the cooling tube 2 below, the rotating drive unit 33 in the connecting tube 3 can drive the rotating shaft 31 to drive the stirring blade 311 to rotate, so as to The coolant in the connecting pipe 3 is stirred to make its temperature more uniform after mixing, thereby ensuring the uniformity of the heat absorption effect on the inner tube 24 in the subsequent cooling tube 2, so that the material in the inner tube 24 can be evenly cooled; the spiral blade 27 in this embodiment is sleeved on the outside of the inner tube 24 through the sleeves 271 at both ends, and the rotation drive unit 33 can drive the spiral blade 27 to rotate around the axis of the inner tube 24. During the rotation process, the spiral blade 27 can scrape off impurities formed on the outer wall of the inner tube 24 and the inner wall of the cooling tube 2. The scraped impurities follow the flow of the coolant, thereby avoiding impurities attached to the outside of the inner tube 24 affecting the cooling efficiency of the coolant on the material.

[0023] In order to solve the problem of how to separate the impurities scraped off by the spiral blade 27 from the coolant, the following features are specifically set: The axis of the cooling water output pipe 4 is arranged horizontally, and a flange joint 41 for connecting the connecting pipe 3 arranged on the bottom cooling pipe 2 of the mounting frame 1 is arranged on the upper side of the cooling water output pipe 4; a rotating shaft 42 is coaxially arranged in the cooling water output pipe 4, and a plurality of partitions 421 extending radially along the rotating shaft 42 are arranged on the circumference of the rotating shaft 42, and the top of the partition 421 fits the inner wall of the cooling water output pipe 4; a liquid outlet channel 43 and a slag outlet channel 44 extending along the tangent direction of the cooling water output pipe 4 are arranged on both sides of the bottom of the cooling water output pipe 4, and an arc filter 431 with the same curvature as the inner wall of the cooling water output pipe 4 is arranged at the liquid outlet channel 43, and a liquid collecting box 432 is arranged at the end of the liquid outlet channel 4 away from the cooling water output pipe 4, and a slag collecting box 441 is arranged at the end of the slag outlet channel 4 away from the cooling water output pipe 4; a rotating driver 45 is fixedly installed on the outside of the cooling water output pipe 4, and the working end of the rotating driver 45 is transmission-connected with the rotating shaft 42, and the rotating driver 45 drives the rotating shaft 42 to rotate around its own axis.

[0024] In this embodiment, the coolant carries impurities and flows to the cooling water output pipe 4 at the lowest end. The cooling water output pipe 4 is connected to the connecting pipe 3 at the lowest end through a flange joint 41. When the coolant enters the cooling water output pipe 4, it is located between two adjacent partitions 421 on the rotating shaft 42. Following the rotation of the rotating shaft 42, the coolant between the partitions 421 moves to the liquid outlet channel 43. The top of the partition 421 is attached to the surface of the arc filter 431 at the liquid outlet channel 43. The coolant passes through the arc filter 431, and the impurities are filtered by the arc filter 431 and are filtered out. During the subsequent movement of the partition 421, the partition 421 is pushed toward the slag discharge channel 44, where impurities accumulate and eventually enter the slag collecting box 441 for unified collection. The rotating shaft 42 in this embodiment is connected to the working end of the rotating driver 45 outside the cooling water output pipe 4. The rotating driver 45 can be a servo motor. The rotating driver 45 drives the rotating shaft 42 to rotate, thereby realizing the separation of impurities and coolant, so that the coolant discharged through the collecting box 432 does not contain impurities and can be directly recycled to save resources.

[0025] In order to solve the problem of how the rotation driving unit 33 drives the rotating shaft 31 in the connecting pipe 3 to rotate without affecting the flow of the coolant, the following features are specifically set: A collar 312 (such as Fig.11As shown in the figure, the collar 312 is connected to the rotating shaft 31 by a plurality of connecting pieces 313. The inner diameter of the collar 312 is larger than the inner diameter of the connecting pipe 3. The collar 312 is located in the mounting tube 34 arranged in the middle of the connecting pipe 3. The upper and lower ends of the mounting tube 34 are provided with limit rings 341 that fit the outer wall of the collar 312. The outer wall of the collar 312 is provided with a tooth groove 314, and the tooth groove 314 is located between the upper and lower limit rings 341. The rotation driving unit 33 includes a driving gear 331 rotatably mounted on the mounting seat 32. The axis of the driving gear 331 is arranged parallel to the tooth groove 314. The driving gear 331 passes through a connecting port 342 arranged on one side of the mounting tube 34 and is meshed with the tooth groove 314 of the collar 312. The rotation driving unit 33 also includes a first rotation driver 332 that drives the driving gear 331 to rotate. The first rotation driver 332 is fixedly mounted on the mounting seat 32.

[0026] The rotating shaft 31 in this embodiment is connected to the collar 312 through a connecting piece 313. The collar 312 is installed at the mounting tube 34 of the connecting tube 3. The limiting ring 341 of the mounting tube 34 ensures that the axial position of the collar 312 is stable. The coolant flowing through the connecting tube 3 flows downward through the channel between the connecting pieces 313. The fit between the limiting ring 341 and the outer wall of the collar 312 also ensures that the coolant will not leak. The driving gear 331 of the rotation driving unit 33 is meshed and connected with the tooth groove 314 on the outer wall of the collar 312 through the connecting port 342 of the mounting tube 34. Therefore, the rotation of the driving gear 331 located outside the connecting tube 3 can drive the rotating shaft 31 inside the connecting tube 3 to rotate, thereby stirring the coolant passing through the connecting tube 3. The first rotating driver 332 installed on the mounting seat 32 can be connected to the driving gear 331 through a transmission belt. The first rotating driver 332 can be a servo motor, etc.

[0027] In order to solve the problem of how the rotation drive unit 33 drives the spiral blades 27 in the cooling tube 2 to rotate when it is necessary to clean the impurities on the outer wall of the inner tube 24 and the inner wall of the cooling tube 2, the following features are specifically set: The sleeves 271 at both ends of the spiral blade 27 are provided with bevel tooth grooves 272 surrounding the sleeves 271 (combined with Figure 4 , Figure 7 and Fig. 9 ), shaft tubes 28 which are in the same straight line as the driving gear 331 are provided at both ends of the cooling tube 2, a bevel gear 273 is rotatably installed at the shaft tube 28, a shaft rod 274 at the axis of the bevel gear 273 passes through the shaft tube 28 and extends to the outside of the cooling tube 2, the bevel gear 273 is meshed and connected with the bevel tooth groove 272, and when one end of the shaft rod 274 located outside the cooling tube 2 is transmission-connected to the rotating drive unit 33, the bevel gear 273 rotates to drive the spiral blade 27 to rotate.

[0028] A connecting plate 275 is coaxially arranged at one end of the shaft rod 274 located outside the cooling tube 2, and the upper side of the connecting plate 275 is in contact with the bottom end of the shaft tube 28 (such as Figure 7 As shown in FIG. 2 ), a plug-in hole 276 is coaxially arranged on the lower side of the connecting plate 275, and a vertically extending blocking bar 277 is arranged on the inner wall of the plug-in hole 276; a spline groove 333 (as shown in FIG. 2 ) is arranged at the axis of the driving gear 331 Fig.10 As shown in the figure, a spline shaft 334 is slidably installed in the spline groove 333, and a linear driver 335 for driving the spline shaft 334 to move in the vertical direction is fixedly installed on the mounting seat 32; a top end of the spline shaft 334 is coaxially provided with a plug 336, and at least one elastic top block 337 is elastically installed on the circumference of the plug 336. When the plug 336 is inserted into the insertion hole 276 of the connecting plate 275, the elastic top block 337 contacts the blocking bar 277 to drive the bevel gear 273 to rotate synchronously with the rotating shaft 31.

[0029] The cooling tube 2 in this embodiment is located above the driving gear 331 and is provided with a shaft tube 28 in the same straight line. The bevel gear 273 is inserted into the shaft tube 28 through the shaft rod 274. The bevel gear 273 located in the cooling tube 2 is meshed with the bevel tooth groove 272 provided on the sleeve 271. Since the connecting plate 275 at the bottom end of the shaft rod 274 fits the bottom end of the shaft tube 28, the position of the bevel gear 273 in the cooling tube 2 is ensured to be stable, and the meshing connection state between the bevel tooth groove 272 and the bevel gear 273 is stable. A spline groove 333 is provided at the axis of the driving gear 331 of the rotation driving unit 33, and the spline shaft 334 is installed at the spline groove 333. When the first rotation driving unit 33 is When the drive gear 331 is driven to rotate by the actuator 332, the spline shaft 334 rotates synchronously, and the working end of the linear actuator 335 can be located below to push the spline shaft 334 upward during the rotation process until the top head 336 of the spline shaft 334 is inserted into the insertion hole 276 at the bottom of the connecting plate 275, and the elastic top block 337 on the side of the top head 336 contacts the stop bar 277 when rotating in the insertion hole 276, so that the elastic top block 337 pushes the stop bar 277 to move to realize the synchronous rotation of the bevel gear 273 and the driving gear 331, so that the spiral blade 27 is located inside the cooling pipe 2 and rotates to scrape the impurities on the outer wall of the inner pipe 24 and the inner wall of the cooling pipe 2. The linear actuator 335 in this embodiment can be an electric push rod, etc., and the movement of the spline shaft 334 in the vertical direction can make the top head 336 and the connecting plate 275 transmission connected or separated, so that the spiral blade 27 can be rotated regularly to clean the impurities in the cooling pipe 2, reducing the pressure on the working shaft of the first rotating actuator 332.

[0030] In order to ensure that the top head 336 enters the insertion hole 276 from top to bottom, the following features are specifically set: The diameter of the top head 336 is smaller than the straight-line distance between the axis of the insertion hole 276 and the surface of the retaining bar 277. The thickness of the elastic top block 337 protruding from the side of the top head 336 is not less than the difference between the radius of the insertion hole 276 and the radius of the top head 336. The upper and lower ends of the elastic top block 337 are provided with bevels.

[0031] The diameter of the top head 336 in this embodiment is smaller than the linear distance between the axis of the insertion hole 276 and the surface of the retaining bar 277, so as to ensure that the top head 336 can enter the insertion hole 276. The elastic top block 337 in this embodiment is slidably installed in the transverse hole arranged on the peripheral side of the top head 336. A spring elastically connected to the elastic top block 337 is arranged in the transverse hole. The spring pushes the elastic top block 337 to protrude from the peripheral side of the top head 336. During the upward movement of the elastic top block 337, the inclined surface at the top of the elastic top block 337 contacts the lower edge of the insertion hole 276. When the top head 336 is completely inserted into the insertion hole 276, the elastic top block 337 pops out under the action of elastic force. Since the thickness of the elastic top block 337 protruding from the side of the top head 336 is not less than the difference between the radius of the insertion hole 276 and the radius of the top head 336, it can be ensured that the elastic top block 337 can fit the side of the baffle 277 when moving, driving the connecting plate 275, the shaft rod 274 and the bevel gear 273 to rotate.

[0032] In order to solve the problem of how to reduce the friction between the linear drive 335 and the working end of the linear drive 335 when the linear drive 335 pushes the spline shaft 334 upward during the rotation process, the following features are specifically set: The working end of the linear drive 335 is arranged to move in the vertical direction. The linear drive 335 is fixedly mounted below the mounting seat 32. The mounting seat 32 is provided with a through hole 321 which is in the same straight line as the driving gear 331. The working end of the linear drive 335 passes through the through hole 321 to contact the bottom end of the spline shaft 334.

[0033] A ball 338 is rotatably mounted at a position where the bottom end of the spline shaft 334 contacts the working end of the linear drive 335 , and the surface of the ball 338 protrudes from the bottom surface of the spline shaft 334 .

[0034] The linear driver 335 in this embodiment is located below the spline shaft 334. The working end of the linear driver 335 passes through the through hole 321 to contact the ball 338 rotatably installed at the bottom of the spline shaft 334. When the ball 338 contacts the working end of the linear driver 335, rolling friction is generated, which reduces frictional heat while ensuring smooth rotation of the spline shaft 334.

[0035] In order to clean the impurities discharged from the slag discharge channel 44, the following features are specifically set: A drawer box 442 is slidably installed in the slag collecting box 441.

[0036] The draw box 442 in this embodiment opens upward to collect impurities discharged from the slag discharge channel 44 into the slag collecting box 441 , and the staff can regularly draw out the draw box 442 for cleaning.

[0037] In order to design the coolant flow channel in the cooling pipe 2, the following features are specifically set: A plugging head 251 is installed on the cooling tube 2 at the cooling chamber connecting tube 25 that is not connected to the connecting tube 3 . The plugging head 251 is used to plug the cooling chamber connecting tube 25 .

[0038] In this embodiment, the cooling chamber connecting pipe 25 of the cooling tube 2 located at the coolant input end is blocked by a plugging head 251. The staff sets the installation position of the plugging head 251 and the connecting pipe 3 to achieve the setting of the coolant flow channel in the cooling tube 2 to ensure the full contact between the coolant and the inner tube 24.

[0039] Working principle: the material enters the cooling tube 2 at the top of the mounting frame 1 through the feed pipe 22, the material entering the cooling tube 2 flows in the inner tube 24, the cooling tube 2 is located outside the inner tube 24 to form a cooling cavity, the coolant enters the cooling cavity in the cooling tube 2 through the cooling water delivery pipe 26 and the cooling cavity connecting pipe 25 on the cooling tube 2, the coolant absorbs the heat transferred to the inner tube 24 by the material, and cools the material in the inner tube 24, the coolant in the cooling tube 2 located on the upper side flows to the cooling tube 2 below through the cooling cavity connecting pipe 25 and the connecting pipe 3, a spiral blade 27 is provided in the cooling tube 2, the spiral blade 27 fits the outer wall of the inner tube 24 and the inner wall of the cooling tube 2, when the coolant flows in the spiral channel formed by the spiral blade 27, the coolant is mixed while moving, to ensure that the coolant temperature is uniform, when the coolant enters the connecting pipe 3 through the cooling cavity connecting pipe 25 and flows into the cooling tube 2 below, the connecting pipe 3 The rotating drive unit 33 inside can drive the rotating shaft 31 to drive the stirring blade 311 to rotate, so as to stir the coolant passing through the connecting pipe 3. The spiral blade 27 can rotate. During the rotation process, the spiral blade 27 can scrape off the impurities formed on the outer wall of the inner tube 24 and the inner wall of the cooling tube 2. The coolant carries the impurities and flows to the cooling water output pipe 4 at the lowest end. When the coolant enters the cooling water output pipe 4, it is located between the two adjacent partitions 421 on the rotating shaft 42. Following the rotation of the rotating shaft 42, the coolant between the partitions 421 moves to the liquid outlet channel 43. The top end of the rotating shaft 42 is attached to the surface of the arc filter 431 at the liquid outlet channel 43. The coolant passes through the arc filter 431, and the impurities are filtered by the arc filter 431. In the subsequent movement of the partition 421, the partition 421 is pushed to the slag outlet channel 44. The impurities accumulate in the slag outlet channel 44 and finally enter the slag collecting box 441 for unified collection.

[0040] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A tubular cooler, comprising a mounting frame (1), and a plurality of cooling pipes (2) mounted on the mounting frame (1), wherein the cooling pipes (2) are connected to each other via double-ended elbows (21) to form a rotary flow channel, and the cooling pipes (2) located at the top of the mounting frame (1) are respectively connected to a feed pipe (22) and a discharge pipe (23), characterized in that: An inner tube (24) is coaxially arranged inside the cooling tube (2), and a cooling cavity is formed in the space outside the inner tube (24) of the cooling tube (2). Vertical cooling cavity connecting tubes (25) are respectively arranged at both ends of the cooling tube (2). The cooling cavity connecting tube (25) at one end of the cooling tube (2) located at the top of the mounting frame (1) is connected to a cooling water delivery pipe (26). The cooling cavity connecting tubes (25) of the upper and lower cooling tubes (2) are connected via a connecting tube (3) to form a rotary cooling water flow channel. A cooling water output pipe (4) is arranged at the cooling cavity connecting tube (25) of the cooling tube (2) located at the bottom of the mounting frame (1); A spiral blade (27) is arranged inside the cooling pipe (2), and sleeves (271) arranged at both ends of the spiral blade (27) are sleeved outside the inner pipe (24), so that the spiral blade (27) fits the inner wall of the cooling pipe (2) and the outer wall of the inner pipe (24); A rotating shaft (31) is coaxially mounted inside the connecting tube (3), a stirring blade (311) is arranged on the rotating shaft (31), a mounting seat (32) is arranged outside the connecting tube (3), and a rotating driving unit (33) is arranged on the mounting seat (32) for driving the rotating shaft (31) and the spiral blade (27) to rotate around its own axis.

2. A tubular cooler according to claim 1, characterized in that: The cooling water output pipe (4) is arranged with its axis horizontally, and a flange joint (41) is arranged on the upper side of the cooling water output pipe (4) for connecting to a connecting pipe (3) arranged on the bottom cooling pipe (2) of the mounting frame (1); A rotating shaft (42) is coaxially arranged inside the cooling water output pipe (4), and a plurality of partitions (421) extending radially along the rotating shaft (42) are arranged on the circumference of the rotating shaft (42), and the top ends of the partitions (421) are in contact with the inner wall of the cooling water output pipe (4); A liquid outlet channel (43) and a slag outlet channel (44) extending in the tangential direction of the cooling water outlet pipe (4) are arranged on both sides of the bottom of the cooling water outlet pipe (4); an arc-shaped filter screen (431) having the same arc as the inner wall of the cooling water outlet pipe (4) is arranged at the liquid outlet channel (43); a liquid collecting box (432) is arranged at one end of the liquid outlet channel (43) away from the cooling water outlet pipe (4); and a slag collecting box (441) is arranged at one end of the slag outlet channel (44) away from the cooling water outlet pipe (4); A rotary driver (45) is fixedly mounted on the outside of the cooling water output pipe (4). The working end of the rotary driver (45) is in driving connection with the rotating shaft (42). The rotary driver (45) drives the rotating shaft (42) to rotate around its own axis.

3. A tubular cooler according to claim 2, characterized in that: A collar (312) is coaxially arranged outside the rotating shaft (31), the outer wall of the collar (312) is connected to the rotating shaft (31) via a plurality of connecting pieces (313), the inner diameter of the collar (312) is larger than the inner diameter of the connecting pipe (3), the collar (312) is located in a mounting pipe (34) arranged in the middle of the connecting pipe (3), and limit rings (341) are arranged at the upper and lower ends of the mounting pipe (34) to fit the outer wall of the collar (312); The outer wall of the collar (312) is provided with a tooth groove (314), and the tooth groove (314) is located between the upper and lower limiting rings (341). The rotation drive unit (33) comprises a driving gear (331) rotatably mounted on the mounting seat (32), and the axis of the driving gear (331) is arranged parallel to the tooth groove (314). The driving gear (331) passes through a communication port (342) provided on one side of the mounting tube (34) and is meshedly connected with the tooth groove (314) of the collar (312). The rotation drive unit (33) further comprises a first rotation driver (332) for driving the driving gear (331) to rotate, and the first rotation driver (332) is fixedly mounted on the mounting seat (32).

4. A tubular cooler according to claim 3, characterized in that: The sleeves (271) at both ends of the spiral blade (27) are provided with bevel tooth grooves (272) surrounding the sleeves (271); shaft tubes (28) located on the same straight line as the drive gear (331) are provided at both ends of the cooling tube (2); a bevel gear (273) is rotatably mounted on the shaft tube (28); a shaft rod (274) at the axis of the bevel gear (273) passes through the shaft tube (28) and extends to the outside of the cooling tube (2); the bevel gear (273) is meshedly connected with the bevel tooth grooves (272); when one end of the shaft rod (274) located outside the cooling tube (2) is transmission-connected to the rotary drive unit (33), the rotation of the bevel gear (273) drives the spiral blade (27) to rotate.

5. A tubular cooler according to claim 4, characterized in that: A connecting plate (275) is coaxially arranged at one end of the shaft rod (274) located outside the cooling tube (2), the upper side of the connecting plate (275) is in contact with the bottom end of the shaft tube (28), an inserting hole (276) is coaxially arranged at the lower side of the connecting plate (275), and a vertically extending blocking strip (277) is arranged on the inner wall of the inserting hole (276); A spline groove (333) is provided at the axis of the driving gear (331), a spline shaft (334) is slidably mounted in the spline groove (333), and a linear driver (335) for driving the spline shaft (334) to move in a vertical direction is fixedly mounted on the mounting seat (32); A top end of the spline shaft (334) is coaxially provided with a plug (336), and at least one elastic top block (337) is elastically mounted on the circumference of the plug (336). When the plug (336) is inserted into the insertion hole (276) of the connecting plate (275), the elastic top block (337) contacts the stop bar (277) to drive the bevel gear (273) and the rotating shaft (31) to rotate synchronously.

6. A tubular cooler according to claim 5, characterized in that: The diameter of the plug (336) is smaller than the linear distance between the axis of the insertion hole (276) and the surface of the stop bar (277), and the thickness of the elastic top block (337) protruding from the side of the plug (336) is not less than the difference between the radius of the insertion hole (276) and the radius of the plug (336); The upper and lower ends of the elastic top block (337) are provided with bevel angles.

7. The tubular cooler according to claim 5, characterized in that: The working end of the linear drive (335) is arranged to move in a vertical direction. The linear drive (335) is fixedly mounted below the mounting seat (32). The mounting seat (32) is provided with a through hole (321) which is in the same straight line as the driving gear (331). The working end of the linear drive (335) passes through the through hole (321) to contact the bottom end of the spline shaft (334).

8. The tubular cooler according to claim 5, characterized in that: A ball (338) is rotatably mounted at a position where the bottom end of the spline shaft (334) contacts the working end of the linear drive (335), and the surface of the ball (338) protrudes from the bottom surface of the spline shaft (334).

9. The tubular cooler according to claim 5, characterized in that: A drawer box (442) is slidably mounted in the slag collecting box (441).

10. The tubular cooler according to claim 5, characterized in that: A plugging head (251) is installed at the cooling chamber connecting pipe (25) on the cooling pipe (2) that is not connected to the connecting pipe (3), and the plugging head (251) is used to plug the cooling chamber connecting pipe (25).

Images