Heat exchanger and rectification system

Abstract

The utility model discloses a heat exchanger and a rectification system. The heat exchanger comprises a heat exchange assembly, the heat exchange assembly comprises a cooling cylinder, a feeding cylinder, a discharging cylinder and a cooling pipe, an inner cavity of the cooling cylinder is used for containing cooling liquid, the two ends of the cooling cylinder are a feeding end face and a discharging end face respectively, the feeding cylinder is connected with the feeding end face, the discharging cylinder is connected with the discharging end face, and the two ends of the cooling pipe penetrate through the feeding end face and the discharging end face respectively; the stirring assembly comprises a stirring plate, a reciprocating screw rod, a turbine and a sliding rail, the stirring plate and the sliding rail are arranged in the cooling cylinder, the sliding rail is connected with the inner wall of the cooling cylinder and extends in the length direction of the cooling cylinder, the stirring plate is in sliding connection with the sliding rail, and the stirring plate is provided with a screw hole matched with the reciprocating screw rod; the two ends of the reciprocating lead screw are rotationally connected with the feeding end face and the discharging end face respectively, and the turbine is arranged in the feeding barrel and / or the discharging barrel and coaxially connected with the reciprocating lead screw. The rectification system comprises a heat exchanger. According to the utility model, the energy consumption in the cooling process can be reduced, and the cooling and rectifying cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation equipment, in particular to a heat exchanger and a distillation system. Background Art

[0002] N-methyl-2-pyrrolidone (NMP) is a colorless oily liquid containing carbon, hydrogen, nitrogen and other elements. It is an irreplaceable organic solvent in the lithium battery industry. It is expensive and has a high recycling value.

[0003] In the battery recycling process, NMP slurry is often recovered through the distillation process. In the distillation tower, heat exchangers are usually used to heat the liquid from the bottom of the tower so that steam can evaporate it and separate different components. Heat exchangers are used to adjust the temperature and pressure to optimize its operating efficiency. Heat exchangers can be used to heat, cool or adjust the temperature in the tower, thereby affecting the phase change and separation efficiency of the materials in the tower.

[0004] The conventional heat exchanger design includes a cold water feed pipe, a hot material feed pipe, a cold water discharge pipe, a hot material discharge pipe and a load-bearing seat. Baffles are arranged in a horizontal array at staggered intervals inside the heat exchange tube. Cold water is used as a coolant and is pumped into the outer wall of the heat exchange tube through a circulating pump. The flow path of the cold water after entering the heat exchanger increases, which increases the distribution amount of cold water inside the heat exchange tube, increases the contact area between the outer wall of the guide tube and the hot material inside the heat exchange tube, and makes the heat exchange efficiency higher.

[0005] Although the heat exchange efficiency can be improved by allowing the coolant to continuously flow into the heat exchanger and cool the hot material by heat exchange, the use of a pump body to transport the coolant will increase the energy loss generated by the pump body, increasing expenses and costs. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a heat exchanger and a distillation system.

[0007] The solution of the utility model to solve the technical problem is:

[0008] A heat exchanger, comprising:

[0009] A heat exchange component, comprising a cooling cylinder, a feed cylinder, a discharge cylinder and a cooling pipe, wherein the inner cavity of the cooling cylinder is used to hold a coolant, the two ends of the cooling cylinder along the length direction are a feed end face and a discharge end face respectively, the feed cylinder is connected to the feed end face, the discharge cylinder is connected to the discharge end face, the cooling pipe is located in the inner cavity of the cooling cylinder, the inlet end of the cooling pipe is penetrated through the feed end face and communicated with the inner cavity of the feed cylinder, and the outlet end of the cooling pipe is penetrated through the discharge end face and communicated with the inner cavity of the discharge cylinder;

[0010] The stirring assembly includes a stirring plate, a reciprocating screw, a turbine and a slide rail, the stirring plate and the slide rail are arranged in the cooling cylinder, the slide rail is connected to the inner wall of the cooling cylinder and extends along the length direction of the cooling cylinder, the stirring plate is slidably connected to the slide rail, the stirring plate is provided with a screw hole that cooperates with the reciprocating screw, the reciprocating screw is passed through the screw hole, one end of the reciprocating screw extends to the feed cylinder and is rotatably connected to the feed end face, the other end of the reciprocating screw extends to the discharge cylinder and is rotatably connected to the discharge end face, the turbine is arranged in the feed cylinder and / or the discharge cylinder, and is coaxially connected to the reciprocating screw.

[0011] The utility model has at least the following beneficial effects: hot material enters from the feed barrel and flows along the cooling pipe into the cooling barrel, the temperature of the hot material is reduced after heat exchange with the coolant contained in the cooling barrel, and the cooled material flows out through the discharge barrel; when the material enters the feed barrel or the discharge barrel provided with a turbine, the flow performance of the material itself can be used to rotate the turbine, and the rotation of the turbine can drive the reciprocating screw to rotate, and the stirring plate can move back and forth along the axial direction of the reciprocating screw, thereby stirring the coolant in the cooling barrel, avoiding local overheating of the coolant, and improving the cooling efficiency and cooling effect; since a stirring component is provided to stir the coolant, there is no need to use a pump body to continuously introduce new coolant into the cooling barrel during the entire cooling process, and the movement of the stirring plate does not need to rely on an external driving device, which can reduce energy loss and greatly reduce the cooling cost of the material.

[0012] As a further improvement of the above technical solution, the stirring plate includes a moving sleeve and a plurality of stirring blades, the screw hole is arranged in the middle of the moving sleeve, and the plurality of stirring blades are arranged around the outer circumference of the moving sleeve. With such arrangement, the moving sleeve can reciprocate along the axial direction of the reciprocating screw during the rotation of the reciprocating screw, driving the stirring blades to move in the inner cavity of the cooling cylinder, thereby stirring the coolant in the cooling cylinder; since there are a plurality of stirring blades arranged around the outer circumference of the moving sleeve, the plurality of stirring blades can stir the coolant at multiple positions of the cooling cylinder, thereby making the stirring of the coolant more uniform, further improving the cooling effect.

[0013] As a further improvement of the above technical solution, a flow space is provided between two adjacent stirring blades, and a plurality of cooling pipes are provided, and the cooling pipes are arranged one by one in correspondence with the flow space. Such an arrangement can increase the flow rate of materials entering the cooling cylinder, improve the cooling efficiency, and avoid collision between the stirring blades and the cooling pipes, so that the stirring blades can move normally in the cooling cylinder, and avoid local overheating during cooling.

[0014] As a further improvement of the above technical solution, the slide rails are provided with a plurality of rails, each of which corresponds to the stirring blades one by one, and a slide groove is provided on the outer side of the stirring blade, and the slide groove is clamped on the slide rail and slidably connected to the slide rail. Such a configuration can improve the stability of the stirring plate moving along the length direction of the cooling cylinder, and is also conducive to production and processing.

[0015] As a further improvement of the above technical solution, two turbines are provided, and the two turbines are respectively located in the feed barrel and the discharge barrel, and are respectively connected to the two ends of the reciprocating screw. In this way, the materials entering the feed barrel and the discharge barrel can drive the turbines to rotate, providing sufficient driving force for the reciprocating screw, ensuring that the reciprocating screw can rotate normally.

[0016] As a further improvement of the above technical solution, the heat exchange assembly and the stirring assembly are respectively provided with two groups, and the two groups of stirring assemblies are respectively provided corresponding to the two groups of heat exchange assemblies, and the heat exchanger further includes:

[0017] A feed pipe, comprising a main feed pipe and two branch feed pipes, the inlet ends of the two branch feed pipes are respectively connected to the outlet ends of the main feed pipe, and the feed cylinders of the two groups of heat exchange components are respectively connected to the outlet ends of the two branch feed pipes;

[0018] A flow blocking structure is arranged at the outlet end of the main inlet pipe and is used to block the communication between one of the branch inlet pipes and the main inlet pipe.

[0019] When the coolant in the heat exchange component becomes hot due to working for too long, resulting in low cooling efficiency, the baffle structure can be controlled to block the branch inlet pipe corresponding to the overheated heat exchange component, allowing the material to enter another heat exchange component for cooling. At the same time, the coolant in the overheated heat exchange component can dissipate heat. Alternating the two heat exchange components can ensure the heat exchange effect of the material and improve the cooling efficiency of the material.

[0020] As a further improvement of the above technical solution, the baffle structure includes a flow guide housing, a flow baffle and a motor. The flow guide housing is arranged at the outlet end of the main inlet pipe, the inner cavity of the flow guide housing is connected to the main inlet pipe, the flow guide housing is provided with two connecting ports, the two connecting ports are respectively connected to the two branch inlet pipes, the flow baffle is rotatably connected to the inner cavity of the flow guide housing, and the output end of the motor is drivingly connected to the flow baffle to drive the flow baffle to rotate and block one of the connecting ports. The action of the motor driving the flow baffle can replace the action of manually operating the alternating use of the heat exchange component, which greatly reduces the labor intensity of the workers and reduces the labor cost.

[0021] As a further improvement of the above technical solution, the heat exchanger further includes:

[0022] The discharge pipe comprises a main discharge pipe and two branch discharge pipes, wherein the inlet ends of the two branch discharge pipes are respectively connected to the discharge barrels of the two heat exchange components, and the outlet ends of the two branch discharge pipes are respectively connected to the inlet end of the main discharge pipe.

[0023] Since the two branch pipes are connected to the inlet end of the same main outlet pipe, the outlet end of the main outlet pipe is connected and installed to the inlet end of the downstream equipment, thereby realizing the connection and installation of the heat exchanger and the downstream equipment. When the two sets of heat exchange components are used alternately, there is no need to disassemble and separate the heat exchanger and the downstream equipment. The materials exchanged through the two different sets of heat exchange components can all enter the main outlet pipe in a unified manner and flow to the downstream equipment through the main outlet pipe, which is more convenient to use.

[0024] As a further improvement of the above technical solution, the discharge pipe also includes a partition, which is connected to the inner wall of the main discharge pipe and is arranged between the outlet ends of the two branch discharge pipes.

[0025] The setting of the partition can prevent the cooled material from flowing out of the working heat exchange component to the branch pipe and then entering the non-working heat exchange component through another branch pipe, thereby ensuring the smooth progress of the heat exchange process.

[0026] A distillation system includes a heat exchanger as described in any one of the above technical solutions. Since the distillation system includes the heat exchanger in the above technical solution, the hot material obtained by distillation can be cooled down through the heat exchanger. During the cooling process, the flow of the material can drive the stirring component in the heat exchanger to start, avoiding the local overheating of the coolant in the heat exchange component, thereby improving the cooling efficiency and cooling effect of the material without setting a driving component, greatly reducing energy consumption, and reducing the cost of cooling and distillation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the heat exchanger of the embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of the internal structure of the heat exchange component of the heat exchanger of the embodiment of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the stirring assembly of the heat exchanger of an embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the arrangement of the stirring plate and the cooling tube of the heat exchanger of the embodiment of the utility model;

[0032] Figure 5 It is a structural schematic diagram of a feed pipe of a heat exchanger according to an embodiment of the utility model;

[0033] Figure 6 It is a schematic structural diagram of a discharge pipe of a heat exchanger according to an embodiment of the utility model.

[0034] : 100, heat exchange component; 110, cooling cylinder; 111, feed end face; 112, discharge end face; 120, feed cylinder; 130, discharge cylinder; 140, cooling pipe; 200, stirring component; 210, stirring plate; 211, movable sleeve; 212, stirring blade; 220, reciprocating screw; 230, turbine; 240, slide rail; 300, feed pipe; 310, branch feed pipe; 400, flow blocking structure; 410, flow guide shell; 420, flow blocking member; 430, motor; 440, bracket; 500, discharge pipe; 510, main outlet pipe; 520, branch outlet pipe; 530, partition. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0040] First, refer to Figures 1 to 6 The embodiment of the utility model proposes a heat exchanger, which can solve the problem of a large amount of energy loss in conventional heat exchangers when conveying coolant through a pump body, thereby greatly reducing the cost of heat exchange.

[0041] In this embodiment, the heat exchanger includes a heat exchange component 100 and a stirring component 200. The heat exchange component 100 is used to exchange heat between the material and the coolant to achieve cooling of the material. The stirring component 200 is used to stir the coolant to avoid local overheating of the coolant and improve the cooling effect.

[0042] Reference Figure 2 The heat exchange assembly 100 includes a cooling cylinder 110, a feed cylinder 120, a discharge cylinder 130 and a cooling pipe 140. The cooling cylinder 110 is a hollow structure, and the inner cavity of the cooling cylinder 110 is used to hold the coolant. The two ends of the cooling cylinder 110 along the length direction are respectively a feed end face 111 and a discharge end face 112. The setting of the feed end face 111 and the discharge end face 112 can prevent the coolant in the inner cavity of the cooling cylinder 110 from overflowing.

[0043] The feed barrel 120 and the discharge barrel 130 are respectively arranged on the outside of the cooling barrel 110, wherein the feed barrel 120 is connected to the feed end face 111, and the discharge barrel 130 is connected to the discharge end face 112. Both the feed barrel 120 and the discharge barrel 130 are hollow structures, and the cooling pipe 140 is used to guide the flow of materials. The inlet end of the cooling pipe 140 is penetrated through the feed end face 111 and is connected to the inner cavity of the feed barrel 120, while the outlet end of the cooling pipe 140 is penetrated through the discharge end face 112 and is connected to the inner cavity of the discharge barrel 130. The middle part of the cooling pipe 140 is arranged in the inner cavity of the cooling barrel 110.

[0044] It is understandable that the inlet and outlet ends of the cooling tube 140 are supported by the feed end face 111 and the discharge end face 112 of the cooling barrel 110, respectively, so that the cooling tube 140 can be stably arranged. The connection between the cooling tube 140 and the feed end face 111 and the discharge end face 112 should have good sealing performance, and the material entering the feed barrel 120 cannot enter the cooling barrel 110 through the connection gap between the cooling tube 140 and the feed end face 111, and the material entering the discharge barrel 130 cannot enter the cooling barrel 110 through the connection gap between the cooling tube 140 and the discharge end face 112, so as to ensure that the coolant in the cooling barrel 110 can be used normally.

[0045] It is understandable that the coolant is a liquid that can perform heat exchange with the material in the cooling pipe 140, such as cold water or other liquids.

[0046] It is understandable that the inlet of the heat exchange assembly 100 is provided on the side of the feed barrel 120 away from the feed end face 111, and the outlet of the heat exchange assembly 100 is provided on the side of the discharge barrel 130 away from the discharge end face 112. The hot material that needs to be heat exchanged enters the heat exchange assembly 100 from one side of the feed barrel 120, flows into the cooling pipe 140 in the inner cavity of the feed barrel 120, enters the inner cavity of the cooling barrel 110 containing the coolant along the cooling pipe 140, and conducts heat transfer with the coolant. The temperature of the material after heat exchange is reduced, and the cooled material flows out from the outlet end of the cooling pipe 140 to the discharge barrel 130, and leaves the heat exchange assembly 100 from the discharge barrel 130.

[0047] It is worth noting that the heat exchanger in this embodiment also includes a stirring assembly 200 for stirring the coolant in the cooling cylinder 110 so that the temperature of each position of the coolant is uniform, thereby avoiding local overheating of the coolant and affecting heat transfer with the material in the cooling tube 140.

[0048] Reference Figure 3The stirring assembly 200 includes a stirring plate 210, a reciprocating screw 220, a turbine 230 and a slide rail 240. The stirring plate 210 and the slide rail 240 are respectively arranged inside the cooling cylinder 110, the slide rail 240 is connected to the inner wall of the cooling cylinder 110, and is extended along the length direction of the cooling cylinder 110. The stirring plate 210 is slidably connected to the slide rail 240. The stirring plate 210 can slide along the length direction of the cooling cylinder 110 under the guidance of the slide rail 240, thereby stirring the coolant in the inner cavity of the cooling cylinder 110. A screw hole is provided on the stirring plate 210, and the reciprocating screw 220 is penetrated in the screw hole and is matched and connected with the hole wall of the screw hole. The reciprocating screw 220 is extended along the length direction of the cooling cylinder 110, one end of the reciprocating screw 220 is penetrated through the feed end face 111, is rotatably connected to the feed end face 111, and extends into the feed cylinder 120; the other end of the reciprocating screw 220 is penetrated through the discharge end face 112, is rotatably connected to the discharge end face 112, and extends into the discharge cylinder 130. The turbine 230 is disposed in the feed cylinder 120 and / or the discharge cylinder 130, and is coaxially connected to the reciprocating screw 220.

[0049] It can be understood that when the material enters the feed barrel 120 or the discharge barrel 130, the flow of the material can drive the turbine 230 located in the feed barrel 120 or the discharge barrel 130 to rotate, thereby allowing the reciprocating screw 220 to rotate. The stirring plate 210 mounted on the reciprocating screw 220 will not rotate with the reciprocating screw 220 under the restriction of the slide rail 240 and the driving action of the reciprocating screw 220, and can move along the extension direction of the reciprocating screw 220, that is, the stirring plate 210 can move along the length direction of the cooling barrel 110.

[0050] It can be understood that the reciprocating screw 220 is a form of a stereo cam pair, which is represented by two thread grooves with the same pitch and opposite rotation directions, and the two ends of the two thread grooves are connected by transition curves. Through the rotation of the reciprocating screw 220, the side of the thread groove pushes the thread structure in the screw hole that matches the thread groove to reciprocate along the axial direction of the reciprocating screw 220, thereby realizing the reciprocating movement of the stirring plate 210 along the axial direction of the reciprocating screw 220. In this process, the rotation direction of the turbine 230 remains unchanged.

[0051] It can be understood that the present embodiment utilizes the flow properties of the material to drive the turbine 230 to rotate, thereby causing the stirring plate 210 to reciprocate along the axial direction of the reciprocating screw 220, thereby stirring the coolant in the cooling cylinder 110, avoiding local overheating of the coolant in the cooling cylinder 110, improving the heat exchange effect, and eliminating the need to use an external pump body to add new coolant to the heat exchange component 100, thereby reducing energy loss.

[0052] It can be understood that the feed end face 111 and the discharge end face 112 jointly provide support force for the reciprocating screw 220, and the material located in the feed barrel 120 cannot enter the cooling barrel 110 through the connecting gap between the reciprocating screw 220 and the feed end face 111, and the material located in the discharge barrel 130 cannot enter the cooling barrel 110 through the connecting gap between the reciprocating screw 220 and the discharge end face 112, so as to avoid the influence of the material on the coolant.

[0053] In this embodiment, the diameters of the discharge barrel 130 and the feed barrel 120 are both smaller than the diameter of the cooling barrel 110. This arrangement allows the material to have greater kinetic energy when entering the feed barrel 120 or the discharge barrel 130, and can provide greater driving force for the turbine 230, so that the reciprocating screw 220 can rotate normally, and the stirring plate 210 can smoothly reciprocate along the axial direction of the reciprocating screw 220. In addition, it can ensure that there is enough space in the cooling barrel 110 to hold the coolant, thereby improving the cooling efficiency and cooling effect of the heat exchanger.

[0054] In some embodiments, reference Figure 4 The stirring plate 210 includes a moving sleeve 211 and stirring blades 212. The screw hole that cooperates with the reciprocating screw 220 is arranged in the middle of the moving sleeve 211. The stirring blades 212 are provided with multiple pieces, and the multiple stirring blades 212 are arranged around the outer circumference of the moving sleeve 211. In this way, the moving sleeve 211 can reciprocate along the axial direction of the reciprocating screw 220 during the rotation of the reciprocating screw 220, driving the stirring blades 212 to move in the inner cavity of the cooling cylinder 110, thereby stirring the coolant in the cooling cylinder 110. Since the stirring blades 212 are arranged around the outer circumference of the moving sleeve 211, the multiple stirring blades 212 can stir the coolant at multiple positions of the cooling cylinder 110, so that the stirring of the coolant is more uniform, and the cooling effect is further improved.

[0055] It can be understood that in the embodiment with multiple stirring blades 212 , there is a flow space between two adjacent stirring blades 212 to facilitate the passage of the cooling pipe 140 .

[0056] In some embodiments, a plurality of cooling tubes 140 are provided, and the number of cooling tubes 140 is equal to the number of flow spaces formed by the plurality of stirring blades 212. The cooling tubes 140 and the flow spaces are arranged one-to-one, that is, the cooling tubes 140 and the stirring blades 212 are arranged alternately. With such an arrangement, after the hot material enters the feed barrel 120, it can enter the cooling barrel 110 for cooling along one or more of the cooling tubes 140, and the flow rate of the hot material entering the cooling barrel 110 is larger, thereby improving the cooling efficiency of the hot material. Moreover, when the stirring plate 210 reciprocates along the reciprocating screw 220 under the driving action of the reciprocating screw 220, the collision between the stirring blades 212 and the cooling tubes 140 can be avoided, thereby being able to normally disturb the coolant in the cooling barrel 110, avoiding the situation of local overheating of the coolant, accelerating the mixing between the high and low temperature coolants, unifying the overall temperature of the coolant in the cooling barrel 110, and improving the cooling effect.

[0057] In this embodiment, there are four stirring blades 212 on the stirring plate 210, and the four stirring blades 212 are evenly arranged around the outer circumference of the moving sleeve 211. There are also four cooling pipes 140, and the four cooling pipes 140 are evenly arranged around the outer circumference of the reciprocating screw rod 220. Such a configuration can make the coolant in the cooling cylinder 110 more evenly stirred, improve the cooling effect, and make the cooling effect of each cooling pipe 140 consistent.

[0058] In this embodiment, each stirring blade 212 includes an extension rod and two fan-shaped blades, wherein the extension rod is extended along the radial direction of the movable sleeve 211 toward the inner wall surface of the cooling cylinder 110, one end of the extension rod is connected to the outer peripheral wall surface of the movable sleeve 211, and the other end is slidably connected to the slide rail 240. The two fan-shaped blades are connected to the extension rod and are located at the end of the extension rod away from the movable sleeve 211. When the extension rod and the slide rail 240 are installed, the slide rail 240 is located between the two fan-shaped blades, and the arc edge of the fan-shaped blade is consistent with the inner wall surface of the cooling cylinder 110, and a gap is reserved between the inner wall surface of the cooling cylinder 110.

[0059] Such an arrangement can maximize the contact area between the fan-shaped blades and the coolant in the cooling cylinder 110 while retaining sufficient flow space for the cooling tube 140 , and can avoid the influence of the inner wall of the cooling cylinder 110 on the movement of the stirring blades 212 .

[0060] In this embodiment, there is a certain angle between the fan-shaped leaf and the extension rod, that is, the fan-shaped leaf is inclined relative to the extension rod. Such an arrangement can further increase the contact area between the fan-shaped leaf and the coolant in the inner cavity of the cooling cylinder 110 in a limited space, increase the stirring effect on the coolant, and improve the cooling effect and cooling efficiency.

[0061] In some embodiments, a plurality of slide rails 240 are provided, and the plurality of slide rails 240 are connected to the inner wall of the cooling cylinder 110 and are extended along the length direction of the cooling cylinder 110. The number of the stirring blades 212 is equal to the number of the slide rails 240, and the setting position of the slide rails 240 also corresponds to the position of the stirring blades 212. A slide groove is provided on the outer side of each stirring blade 212 (i.e., the side away from the movable sleeve 211), and the slide groove is clamped on the slide rail 240 and is slidably connected to the slide rail 240.

[0062] It is understandable that the shape of the slide groove matches the slide rail 240. In this embodiment, the slide groove is an "I"-shaped groove, and the two side walls of the slide groove facing the feed end face 111 and the discharge end face 112 are both opened, and the cross section of the slide rail 240 is an "I"-shaped. Such a setting can ensure the connection stability between the stirring blade 212 and the slide rail 240, thereby ensuring the stability of the movement of the stirring plate 210.

[0063] In some embodiments, the two ends of the slide rail 240 along the length direction are respectively connected to the feed end face 111 and the discharge end face 112, and a gap is left between the slide rail 240 and the inner wall surface of the cooling cylinder 110. In this embodiment, the slide rail 240 is connected to the inner wall surface of the cooling cylinder 110, and the two ends of the slide rail 240 along the length direction are respectively connected to the feed end face 111 and the discharge end face 112. Such a setting can ensure the straightness of the slide rail 240 and improve the strength of the slide rail 240. The slide groove is set at the edge of the stirring blade 212, and the stirring blade 212 can extend from the movable sleeve 211 to the inner wall surface of the cooling cylinder 110, which expands the area of ​​the stirring blade 212, further improves the stirring effect on the coolant, and is more conducive to the installation of the stirring plate 210.

[0064] In some embodiments, two turbines 230 are provided, and the two turbines 230 are respectively disposed in the feed cylinder 120 and the discharge cylinder 130 , and are respectively connected to both ends of the reciprocating screw 220 along the length direction.

[0065] With such an arrangement, the materials entering the feed barrel 120 and the discharge barrel 130 can both drive the turbine 230 to rotate, providing sufficient driving force for the reciprocating screw 220 to ensure that the reciprocating screw 220 can rotate normally. There is no need to set up an additional electric drive component to control the rotation of the reciprocating screw 220. When the stirring plate 210 is normally driven to move along the length direction of the cooling barrel 110, the energy loss is greatly reduced.

[0066] In order to further enhance the driving effect of the material on the turbine 230, in this embodiment, the inlet of the cooling pipe 140 is arranged toward the blades of the turbine 230 of the feed barrel 120, and the outlet of the cooling pipe 140 is arranged toward the blades of the turbine 230 of the discharge barrel 130. In this arrangement, the material entering the cooling pipe 140 is more likely to contact the blades of the turbine 230 in the feed barrel 120, thereby providing a rotational driving force for the turbine 230 in the feed barrel 120; and the material flowing out of the cooling pipe 140 is also more likely to contact the blades of the turbine 230 in the discharge barrel 130, thereby providing a rotational driving force for the turbine in the discharge barrel 130.

[0067] It can be understood that the direction in which the turbine 230 in the feed barrel 120 is driven to rotate when the material enters the feed barrel 120 is consistent with the direction in which the turbine 230 in the discharge barrel 130 is driven to rotate when the material enters the discharge barrel 130, and the rotation directions of the two turbines 230 are consistent with the rotation direction of the reciprocating screw 220.

[0068] In some embodiments, two groups of heat exchange components 100 and stirring components 200 are respectively provided, and the two groups of stirring components 200 are respectively provided corresponding to the two groups of heat exchange components 100, so that the material can alternately enter the two groups of heat exchange components 100 for heat exchange. When the material enters one group of heat exchange components 100 for heat exchange, the other group of heat exchange components 100 is cooled. In this way, the alternating use of the two groups of heat exchange components 100 can ensure the cooling effect of the material.

[0069] In this embodiment, the heat exchanger further includes a feed pipe 300 and a flow blocking structure 400. The feed pipe 300 includes a main feed pipe and two branch feed pipes 310, the inlet ends of the two branch feed pipes 310 are respectively connected to the outlet end of the main feed pipe, and the feed barrels 120 of the two sets of heat exchange components 100 are respectively connected to the outlet ends of the chain branch feed pipes 310. The flow blocking structure 400 is arranged at the outlet end of the main feed pipe, which can block the connection between one of the branch feed pipes 310 and the main feed pipe, allowing the other branch feed pipe 310 to be connected to the main feed pipe, so that all materials can enter the branch feed pipe 310 connected to the main feed pipe, and enter the corresponding heat exchange component 100 through the branch feed pipe 310 for heat exchange.

[0070] With such a configuration, when the coolant in the heat exchange assembly 100 becomes hot due to long working time, resulting in low cooling efficiency, the flow blocking structure 400 can be controlled to block the branch inlet pipe 310 corresponding to the heat exchange assembly 100, allowing the material to enter another heat exchange assembly 100 for cooling, while the coolant in the heat exchange assembly 100 can dissipate heat. By using two heat exchange assemblies 100 alternately, the heat exchange effect of the material can be ensured and the cooling efficiency of the material can be improved.

[0071] In addition, since the two branch inlet pipes 310 are connected to the outlet end of the same main inlet pipe, the inlet end of the main inlet pipe can be installed at the outlet end of the upstream equipment, thereby realizing the connection and installation of the heat exchanger and the upstream equipment. When the two sets of heat exchange components 100 are used alternately, there is no need to disassemble and separate the heat exchanger from the upstream equipment. The branch inlet pipe 310 connected to the main inlet pipe can be directly replaced using the flow blocking structure 400, making the alternating use of the heat exchange components 100 more convenient.

[0072] In this embodiment, the outlet end of the branch inlet pipe 310 is arranged toward the turbine 230, so that the hot material entering the feed barrel 120 can more easily contact the turbine 230 in the feed barrel 120, thereby utilizing the fluidity of the hot material to provide a rotational driving force for the turbine 230 to drive the reciprocating screw 220 to rotate, thereby allowing the stirring plate 210 located in the cooling barrel 110 to move along the axial direction of the reciprocating screw 220 to stir the coolant and improve the cooling effect.

[0073] In some embodiments, the flow blocking structure 400 manually blocks the branch inlet pipe 310 of the heat exchange component 100 that needs heat dissipation, for example, a manual two-position three-way valve is used as the flow blocking structure 400. By manually adjusting the branch inlet pipe 310 connected to the main inlet pipe, the energy loss can be further reduced, but since the alternating action is not performed continuously for a long time, but is performed once after one set of heat exchange components 100 is used for a period of time, compared with the electric method, the energy saved by manually controlling the alternation of the heat exchange components 100 is less, and the workers need to guard and operate the flow blocking structure 400, which will increase more labor costs. In addition, if the worker's operation deviates, such as not operating in place and failing to completely block one of the branch inlet pipes 310, it will cause the two sets of heat exchange components 100 to work at the same time, which is not conducive to the heat dissipation of the heat exchange components 100 and reduces the heat exchange effect of the material.

[0074] In order to solve the above problem, in this embodiment, referring to Figure 5 The flow blocking structure 400 includes a flow guide housing 410, a flow blocking member 420 and a motor 430, and uses an electric method to realize the alternating use of two groups of heat exchange components 100. The flow guide housing 410 is arranged at the outlet end of the main inlet pipe, and the inner cavity of the flow guide housing 410 is connected to the main inlet pipe and is provided with two connecting ports, which are respectively connected to the two branch inlet pipes 310. The flow blocking member 420 is arranged in the inner cavity of the flow guide housing 410 and is rotatably connected to the inner wall surface of the flow guide housing 410. When the flow blocking member 420 rotates to a position that blocks one of the connecting ports, the other connecting port is in an open state, and the branch inlet pipe 310 corresponding to the open connecting port is connected to the main inlet pipe. The output end of the motor 430 is connected to the flow blocking member 420 in a driving manner. Under the driving action of the motor 430, the flow blocking member 420 can automatically rotate and block one of the connecting ports.

[0075] With such a configuration, there is no need for manual control of the alternating use of the two sets of heat exchange components 100, which can greatly reduce the labor intensity of workers and reduce labor costs. Moreover, by driving the action of the baffle 420 through the motor 430, it can be ensured that the baffle 420 rotates in place, blocking one of the connecting ports while leaving the other connecting port open, thereby avoiding the situation where the two heat exchange components 100 are used at the same time, so that the coolant in the heat exchange component 100 in the non-working state can get sufficient heat dissipation time, ensuring the cooling efficiency and cooling effect of the material.

[0076] In this embodiment, the body of the motor 430 is fixed to the outer wall of the air guide housing 410 through a bracket 440 to ensure the installation stability of the motor 430.

[0077] In some embodiments, reference Figure 6 The heat exchanger further includes a discharge pipe 500 for discharging materials, and the discharge pipe 500 includes a main discharge pipe 510 and two branch discharge pipes 520. The inlet ends of the two branch discharge pipes 520 are respectively connected to the discharge barrels 130 of the two heat exchange components 100, and the outlet ends of the two branch discharge pipes 520 are respectively connected to the inlet end of the main discharge pipe 510. In this way, the material to be cooled in any heat exchange component 100 can enter the main discharge pipe 510 through the corresponding branch discharge pipe 520.

[0078] Since the two branch pipes 520 are connected to the inlet end of the same main outlet pipe 510, the outlet end of the main outlet pipe 510 is connected and installed to the inlet end of the downstream equipment, thereby realizing the connection and installation of the heat exchanger and the downstream equipment. When the two sets of heat exchange components 100 are used alternately, there is no need to disassemble and separate the heat exchanger and the downstream equipment. The materials that are heat exchanged through the two different sets of heat exchange components 100 can all enter the main outlet pipe 510 in a unified manner and flow to the downstream equipment through the main outlet pipe 510, which is more convenient to use.

[0079] In this embodiment, the inlet of the branch pipe 520 is arranged toward the turbine 230 in the discharge barrel 130. Such an arrangement allows the cooled material to more easily contact the turbine 230 in the discharge barrel 130, so as to drive the turbine 230 to rotate and provide a rotational driving force for the reciprocating screw 220, so that the stirring plate 210 moves along the axial direction of the reciprocating screw 220 and stirs the coolant in the cooling barrel 110, thereby improving the cooling efficiency and cooling effect.

[0080] In this embodiment, the discharge pipe 500 further includes a partition 530 , which is connected to the inner wall of the main discharge pipe 510 and is disposed between the outlet ends of the two branch pipes 520 , so as to block the two branch pipes 520 .

[0081] Specifically, the partition plate 530 extends in the same direction as the main outlet pipe 510. The partition plate 530 can be installed on the inner wall of the inlet end of the main outlet pipe 510 by welding, gluing, or the like.

[0082] The setting of the partition 530 can prevent the cooled material from flowing out of the working heat exchange component 100 to the branch pipe 520 and then entering the non-working heat exchange component 100 through another branch pipe 520, thereby ensuring the smooth progress of the heat exchange process.

[0083] In some embodiments, in order to improve the heat exchange effect and efficiency, the cooling cylinder 110, the feed cylinder 120, the discharge cylinder 130 and the cooling tube 140 in the heat exchange assembly 100 are all made of metals with good thermal conductivity, such as copper, which can accelerate the heat dissipation of the coolant in the cooling cylinder 110 and accelerate the heat exchange between the material and the coolant.

[0084] In some embodiments, the cooling tube 140 is spirally shaped. Such a configuration can increase the length of the material flowing in the cooling tube 140 and increase the surface area of ​​the cooling tube 140 in contact with the coolant in the cooling cylinder 110, thereby further improving the cooling efficiency and cooling effect of the material.

[0085] On the other hand, the embodiment of the utility model further proposes a distillation system, which includes the heat exchanger proposed in any one of the embodiments of the first aspect. It can be understood that the distillation system is used to implement the distillation operation, which includes components such as a distillation tower. The heat exchanger is applied to the distillation system to cool the materials produced in the distillation tower, and the problem of large energy loss can be solved during the cooling process, thereby reducing costs.

[0086] It can be understood that the distillation system of this embodiment can be applied to multiple industries, such as the lithium battery industry, and can recover NMP slurry in lithium batteries through the distillation process, and can greatly reduce energy loss and reduce recovery costs.

[0087] Specifically, the inlet end of the main inlet pipe is connected to the material outlet end of the distillation tower. The hot material flowing out of the distillation tower enters the heat exchanger through the main inlet pipe, and flows along one of the branch inlet pipes 310 to the feed barrel 120 of the corresponding heat exchange assembly 100 under the guidance of the baffle 420. The hot material entering the feed barrel 120 has fluidity, can drive the turbine 230 in the feed barrel 120 to rotate, and can enter the cooling barrel 110 through the cooling pipe 140. The hot material flowing along the cooling pipe 140 exchanges heat with the coolant in the cooling barrel 110 in the cooling barrel 110 to achieve the effect of cooling. The cooled material flows out to the discharge barrel 130, and the material entering the discharge barrel 130 also has fluidity, which can drive the turbine 230 in the discharge barrel 130 to rotate. The material flows from the discharge barrel 130 to the main outlet pipe 510 through the branch outlet pipe 520, and flows out of the heat exchanger through the main outlet pipe 510 to enter the downstream equipment.

[0088] The rotation of the turbine 230 located at the feed barrel 120 and the discharge barrel 130 can drive the reciprocating screw 220 to rotate, so that the movable sleeve 211 provided with a screw hole reciprocates along the length direction of the reciprocating screw 220, so that the stirring plate 210 moves along the length direction of the cooling barrel 110, and stirs the coolant in the cooling barrel 110, avoiding the occurrence of local overheating of the coolant and improving the cooling effect on the material. In this process, there is no need to set up an additional electric drive component to control the rotation of the reciprocating screw 220. When the stirring plate 210 is normally driven to move along the length direction of the cooling barrel 110, the energy loss is greatly reduced.

[0089] When the coolant in the heat exchange component 100 becomes hot due to long working time, resulting in low cooling efficiency, the motor 430 drives the baffle 420 to rotate to a position blocking the other branch inlet pipe 310, thereby allowing the hot material to flow to the other group of heat exchange components 100 for heat exchange. The two groups of heat exchange components 100 are cooled alternately in this way, ensuring the cooling effect and cooling efficiency of the coolant.

[0090] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A heat exchanger, characterized in that: include: A heat exchange component (100) comprises a cooling cylinder (110), a feed cylinder (120), a discharge cylinder (130) and a cooling pipe (140); the inner cavity of the cooling cylinder (110) is used to hold a cooling liquid; the two ends of the cooling cylinder (110) along the length direction are a feed end face (111) and a discharge end face (112), respectively; the feed cylinder (120) is connected to the feed end face (111), the discharge cylinder (130) is connected to the discharge end face (112), the cooling pipe (140) is located in the inner cavity of the cooling cylinder (110), the inlet end of the cooling pipe (140) is penetrated through the feed end face (111) and communicated with the inner cavity of the feed cylinder (120), and the outlet end of the cooling pipe (140) is penetrated through the discharge end face (112) and communicated with the inner cavity of the discharge cylinder (130); The stirring assembly (200) comprises a stirring plate (210), a reciprocating screw (220), a turbine (230) and a slide rail (240), wherein the stirring plate (210) and the slide rail (240) are arranged in the cooling cylinder (110), the slide rail (240) is connected to the inner wall of the cooling cylinder (110) and extends along the length direction of the cooling cylinder (110), the stirring plate (210) is slidably connected to the slide rail (240), and the stirring plate (210) is provided with a reciprocating screw ( The reciprocating screw rod (220) is inserted into the screw hole, one end of the reciprocating screw rod (220) extends to the feed barrel (120) and is rotatably connected to the feed end face (111), the other end of the reciprocating screw rod (220) extends to the discharge barrel (130) and is rotatably connected to the discharge end face (112), the turbine (230) is arranged in the feed barrel (120) and / or the discharge barrel (130), and is coaxially connected to the reciprocating screw rod (220).

2. The heat exchanger according to claim 1, characterized in that: The stirring plate (210) comprises a moving sleeve (211) and a plurality of stirring blades (212); the screw hole is arranged in the middle of the moving sleeve (211); and the plurality of stirring blades (212) are arranged around the outer circumference of the moving sleeve (211).

3. The heat exchanger according to claim 2, characterized in that: A flow space is provided between two adjacent stirring blades (212), and a plurality of cooling pipes (140) are provided, and the cooling pipes (140) are arranged in a one-to-one correspondence with the flow space.

4. The heat exchanger according to claim 2, characterized in that: A plurality of slide rails (240) are provided, and the slide rails (240) correspond to the stirring blades (212) one by one. A slide groove is provided on the outer side of the stirring blade (212), and the slide groove is clamped on the slide rail (240) and is slidably connected to the slide rail (240).

5. The heat exchanger according to claim 1, characterized in that: Two turbines (230) are provided, and the two turbines (230) are respectively located in the feed cylinder (120) and the discharge cylinder (130), and are respectively connected to two ends of the reciprocating screw rod (220).

6. The heat exchanger according to claim 1, characterized in that The heat exchange assembly (100) and the stirring assembly (200) are respectively provided with two groups, and the two groups of stirring assemblies (200) are respectively provided corresponding to the two groups of heat exchange assemblies (100). The heat exchanger further comprises: A feed pipe (300) comprises a main feed pipe and two branch feed pipes (310), wherein the inlet ends of the two branch feed pipes (310) are respectively connected to the outlet ends of the main feed pipe, and the feed cylinders (120) of the two groups of heat exchange components (100) are respectively connected to the outlet ends of the two branch feed pipes (310); A flow blocking structure (400), the flow blocking structure (400) is arranged at the outlet end of the main inlet pipe, and is used to block the communication between one of the branch inlet pipes (310) and the main inlet pipe.

7. The heat exchanger according to claim 6, characterized in that The flow blocking structure (400) comprises a flow guide housing (410), a flow blocking member (420) and a motor (430); the flow guide housing (410) is arranged at the outlet end of the main inlet pipe; the inner cavity of the flow guide housing (410) is connected to the main inlet pipe; the flow guide housing (410) is provided with two connecting ports, and the two connecting ports are respectively connected to the two branch inlet pipes (310); the flow blocking member (420) is rotatably connected to the inner cavity of the flow guide housing (410); the output end of the motor (430) is drivingly connected to the flow blocking member (420) to drive the flow blocking member (420) to rotate and block one of the connecting ports.

8. The heat exchanger according to claim 6, characterized in that The heat exchanger also includes: The discharge pipe (500) comprises a main discharge pipe (510) and two branch discharge pipes (520), wherein the inlet ends of the two branch discharge pipes (520) are respectively connected to the discharge barrels (130) of the two heat exchange components (100), and the outlet ends of the two branch discharge pipes (520) are respectively connected to the inlet end of the main discharge pipe (510).

9. The heat exchanger according to claim 8, characterized in that The discharge pipe (500) further comprises a partition (530), wherein the partition (530) is connected to the inner wall of the main discharge pipe (510) and is arranged between the outlet ends of the two branch discharge pipes (520).

10. A distillation system, characterized in that: Comprising a heat exchanger as claimed in any one of claims 1 to 9.

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