Efficient washing desalting equipment

Abstract

The utility model relates to the technical field of POD film production, in particular to efficient washing desalting equipment. The efficient washing desalting equipment comprises a cleaning mechanism, the cleaning mechanism comprises a water tank, a traction assembly, a water supply assembly and a water spraying pipe, a containing cavity used for containing clean water is formed in the water tank, the traction assembly is used for dragging a POD film to penetrate through the containing cavity, the water supply assembly is communicated with the water spraying pipe, and the water spraying pipe is communicated with the water tank. The water supply assembly is used for supplying water to the water spraying pipe. According to the POD film washing device, the POD film is dragged into the water tank through the arranged traction assembly, water is supplied to the water spraying pipe located in the containing cavity through the arranged water supply assembly, then the water is sprayed out of the water spraying holes in the water spraying pipe, the surface of the POD film can be directly washed, sulfate on the surface of the POD film is washed away, the flowing speed of water near the POD film can be increased, and the water supply efficiency is improved. The desalting efficiency and the desalting effect are further improved.

Description

Technical Field

[0001] This utility model relates to the field of POD membrane production technology, specifically to a high-efficiency water washing and desalination equipment. Background Technology

[0002] POD membrane forming process: POD (polyarylexadiazole) polymer is dissolved in fuming sulfuric acid to form a uniform solution. This solution is extruded through a die and then enters dilute sulfuric acid for solidification. After solidification, the acid-containing membrane enters a neutralization tank for neutralization. After neutralization, the membrane contains a large amount of sulfate. In order to clean the sulfate, a water washing and desalting device is added after the neutralization tank. The membrane is cleaned and desalted by the water washing and desalting device. After desalting, the POD membrane is stretched by a certain multiple through a longitudinal stretching device. Then it enters a widening device to increase the width of the POD membrane. After drying and edge trimming, it enters a winding machine to be rolled into a roll to obtain the final product.

[0003] Currently, common water washing and desalination equipment includes a water tank, a feeding roller, a discharge roller, and multiple driven rollers. The multiple driven rollers are rotatably connected in the water tank. The POD membrane is washed in the water tank by multiple driven rollers in sequence and then carried out of the water tank by the discharge roller.

[0004] However, this traditional cleaning method only involves immersing the POD membrane section by section into the water tank, allowing the sulfate inside the POD membrane to permeate and migrate into the water to achieve the purpose of desalination. Its water washing desalination effect is poor and its efficiency is low. Utility Model Content

[0005] (I) The problem to be solved by this utility model is: how to improve the water washing and desalination effect and efficiency of POD membrane.

[0006] (II) Technical Solution

[0007] This utility model provides a high-efficiency water washing and desalination device, including a cleaning mechanism, which includes a water tank, a traction component, a water supply component, and a water spray pipe;

[0008] The water tank has a receiving cavity for holding clean water;

[0009] The traction assembly is used to pull the POD membrane through the receiving cavity;

[0010] The water supply component is connected to the water spray pipe, and the water supply component is used to supply water to the water spray pipe.

[0011] The water spray pipe is located inside the receiving cavity, and the water spray pipe is provided with spray holes for spraying water toward the POD membrane.

[0012] According to one embodiment of the present invention, the cleaning mechanism is provided in multiple sets, and the multiple sets of cleaning mechanisms are arranged sequentially along the conveying direction of the POD membrane.

[0013] According to one embodiment of the present invention, the cleaning mechanism further includes an ultrasonic generator connected within the receiving cavity.

[0014] According to one embodiment of the present invention, a U-shaped frame is fixedly connected inside the water tank. The U-shaped frame has a rectangular channel communicating with the receiving cavity. Multiple ultrasonic generators are fixedly connected to the two opposite side walls of the rectangular channel.

[0015] According to one embodiment of the present invention, a heating tube is provided in the water tank, and the heating tube is used to heat the clean water in the receiving cavity.

[0016] According to one embodiment of the present invention, the heating tube is a hot steam tube.

[0017] According to one embodiment of the present invention, the traction assembly includes a first driving roller, a second driving roller, a driving component, and a plurality of driven rollers;

[0018] The driving component is used to drive the first active roller and the second active roller to rotate about their respective axes;

[0019] The axial direction of the first driving roller, the axial direction of the second driving roller, and the axial direction of the driven roller are the same;

[0020] The first active roller and the second active roller are located at the feed end and the discharge end of the water tank, respectively;

[0021] The plurality of driven rollers are located within the receiving cavity, and the plurality of driven rollers are rotatably connected within the receiving cavity. The plurality of driven rollers cooperate to drive the POD film.

[0022] According to one embodiment of the present invention, at least one pressure roller is provided in the receiving cavity, and a gap is left between the pressure roller and the corresponding driven roller for the POD membrane to pass through.

[0023] According to one embodiment of the present invention, the water supply assembly includes a first connecting pipe, a second connecting pipe, and a centrifugal pump;

[0024] One end of the first connecting pipe is connected to the water tank, and the other end of the first connecting pipe is connected to the inlet of the centrifugal pump.

[0025] One end of the second connecting pipe is connected to the outlet of the centrifugal pump, and the other end is connected to one end of the third connecting pipe, the other end of which is connected to the spray pipe.

[0026] According to one embodiment of the present invention, the length direction of the water spray pipe is perpendicular to the conveying direction of the POD membrane;

[0027] Along the length of the water spray pipe, a plurality of water spray holes are spaced apart on the water spray pipe.

[0028] The beneficial effects of this utility model are:

[0029] The POD membrane is pulled into the water tank by the traction component. Water is supplied to the spray pipe located in the receiving cavity by the water supply component. The water is then sprayed out from the spray hole in the spray pipe, which can directly rinse the surface of the POD membrane. This washes away the sulfate on the surface of the POD membrane and increases the flow rate of water near the POD membrane, increases the concentration difference between the inside and outside of the membrane, accelerates the penetration and migration rate of sulfate, and further improves the efficiency and effect of water washing and desalination. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 A first perspective view of a water washing and desalination device is provided for an embodiment of this utility model;

[0032] Figure 2 A second perspective view of the water washing and desalination equipment provided in an embodiment of this utility model;

[0033] Figure 3 A cross-sectional schematic diagram of the water washing and desalination equipment provided in this embodiment of the utility model;

[0034] Figure 4 Provided for the embodiments of this utility model Figure 3 An enlarged schematic diagram of part A in the middle;

[0035] Figure 5 This is a cross-sectional schematic diagram of the water washing and desalination equipment and the POD membrane provided in the embodiment of this utility model.

[0036] Icons: 1. Water tank; 2. Traction assembly; 201. First driving roller; 202. Second driving roller; 203. Driven roller; 3. Water supply assembly; 301. First connecting pipe; 302. Second connecting pipe; 303. Third connecting pipe; 304. Centrifugal pump; 4. Water spray pipe; 401. Water spray hole; 5. Ultrasonic generator; 6. Heating pipe; 7. Pressure roller. Detailed Implementation

[0037] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] like Figures 1-5 As shown, one embodiment of this utility model provides a high-efficiency water washing and desalination device, including a cleaning mechanism, which includes a water tank 1, a traction component 2, a water supply component 3, and a water spray pipe 4.

[0039] The water tank 1 has a receiving cavity for holding clean water;

[0040] Traction assembly 2 is used to pull the POD membrane through the receiving cavity;

[0041] The water supply component 3 is connected to the water spray pipe 4, and the water supply component 3 is used to supply water to the water spray pipe 4.

[0042] The water spray pipe 4 is located inside the receiving cavity, and the water spray pipe 4 is provided with a water spray hole 401 for spraying water toward the POD membrane.

[0043] The POD membrane is pulled into the water tank 1 cavity by the traction component 2. Water is supplied to the spray pipe 4 located in the cavity by the water supply component 3. The water is then sprayed out from the spray hole 401 in the spray pipe 4, which can directly rinse the surface of the POD membrane, so that the sulfate on the surface of the POD membrane is washed away. It can also increase the flow rate of water near the POD membrane, increase the concentration difference inside and outside the POD membrane, accelerate the penetration and migration rate of sulfate, and further improve the water washing desalination efficiency and effect.

[0044] According to one embodiment of the present invention, the cleaning mechanism is provided in multiple sets, and the multiple sets of cleaning mechanisms are arranged sequentially along the conveying direction of the POD membrane.

[0045] Multiple cleaning mechanisms are installed so that more of the POD membrane is placed in the water tank 1, resulting in better cleaning effect.

[0046] It should be noted that during the actual cleaning process, the water tank 1 is equipped with a water inlet pipe connected to an external water source. This pipe is used to continuously inject clean water into the water tank 1. Figure 1 As shown, an overflow port is provided on one side of the water tank 1. The overflow port is located on the upper side of the water tank 1. After clean water is injected, the water with a high salt content after cleaning the POD membrane in the water tank 1 flows out through the overflow port, so that the water in the water tank 1 can be kept at a low salt content, effectively cleaning the POD membrane.

[0047] The water spray pipe 4 and the water spray hole 401 on the water spray pipe 4 can accelerate the flow of water in the water tank 1 cavity, thereby speeding up the replacement speed of the original water source and the newly injected water source in the water tank 1, and improving the cleaning and desalination effect of the POD membrane.

[0048] Preferably, the water tanks 1 of each pair of adjacent cleaning mechanisms are connected by a water pipe. A water pump is installed on the water pipe. One end of the water pipe is connected to the overflow port of the previous water tank 1, and the other end is located above the next water tank 1. Water is supplied only in the first water tank 1, which can circulate the water in the water tank 1 of all cleaning mechanisms and save water resources.

[0049] Optionally, each pair of adjacent cleaning units is not connected. Each cleaning unit has a water injection pipe above its water tank 1. As the POD membrane is washed with water, its salt content gradually decreases. Therefore, the salt content of the water in the receiving cavity of the water tank 1 at the end is lower than that of the water in the receiving cavity of the water tank 1 at the beginning, thereby improving the cleaning effect of the POD membrane.

[0050] According to one embodiment of the present invention, such as Figure 5 As shown, the cleaning mechanism also includes an ultrasonic generator 5, which is connected inside the receiving cavity.

[0051] According to one embodiment of the present invention, a U-shaped frame is fixedly connected inside the water tank 1. The U-shaped frame has a rectangular channel communicating with the receiving cavity. Multiple ultrasonic generators 5 are fixedly connected to the two opposite side walls of the rectangular channel.

[0052] By incorporating the ultrasonic generator 5, the water washing and desalination effect of the POD membrane passing through the rectangular channel can be improved. Furthermore, the desalination effect of the ultrasonic generator 5 is gentler and less likely to damage the POD membrane. The working principle of the ultrasonic generator 5 is existing technology and will not be elaborated further here.

[0053] According to one embodiment of the present invention, such as Figure 3 As shown, a heating pipe 6 is installed in the water tank 1, which is used to heat the clean water in the container cavity.

[0054] According to one embodiment of the present invention, the heating tube 6 is a hot steam tube.

[0055] like Figure 3 As shown, the heating tube 6 is a serpentine coil, which makes the area of ​​water in the water tank 1 that is heated larger, thus improving the heating efficiency.

[0056] Furthermore, a steam generator is installed on one side of the water tank 1, and a steam recovery machine is installed on the other side. One end of the heating pipe 6 is connected to the steam generator, and the other end of the heating pipe 6 is connected to the steam recovery machine. Hot steam is introduced into the heating pipe 6 through the steam generator, so that the heating pipe 6 can provide heat to the water tank 1 and increase the temperature of the clean water in the containment cavity. The higher the temperature, the more active the water molecules are, and the faster the sulfate inside the POD membrane permeates and migrates into the water, thus making the cleaning effect on the POD membrane better.

[0057] Of course, in this embodiment, multiple heating tubes 6 can also be provided. One end of each heating tube 6 is connected to a steam generator, and the other end is connected to a steam recovery machine. The steam generator is used to provide hot steam, and the steam recovery machine is used to recover cold steam. The steam generator and the steam recovery machine are both existing technologies, and will not be described in detail here.

[0058] Of course, in this embodiment, the heating tube 6 can also be in other forms, such as a hot water pipe with hot water flowing inside. The principle remains the same and therefore should fall within the protection scope of this utility model.

[0059] According to one embodiment of the present invention, such as Figure 5 As shown, the traction assembly 2 includes a first driving roller 201, a second driving roller 202, a driving component, and a plurality of driven rollers 203;

[0060] The driving component is used to drive the first drive roller 201 and the second drive roller 202 to rotate about their respective axes;

[0061] The axial direction of the first driving roller 201, the axial direction of the second driving roller 202, and the axial direction of the driven roller 203 are the same.

[0062] The first active roller 201 and the second active roller 202 are located at the feed end and the discharge end of the water tank 1, respectively;

[0063] Multiple driven rollers 203 are located in the receiving cavity, and multiple driven rollers 203 are rotatably connected in the receiving cavity. Multiple driven rollers 203 cooperate to drive the POD film.

[0064] A first through hole is provided inside the driven roller 203, and a first round shaft is rotatably connected inside the first through hole. The first round shaft is rotatably connected to the driven roller 203 through a first bearing. The two ends of the first round shaft are connected to two opposite side walls of the water tank 1.

[0065] It should be noted that the contact surfaces between the POD membrane and each pair of driven rollers 203 are different. The two opposite surfaces of the POD membrane are referred to as the first surface and the second surface. Preferably, there are 10 driven rollers 203, which are referred to as the first roller, the second roller, ... and the tenth roller. The first roller contacts the first surface of the POD membrane, and the second roller contacts the second surface of the POD membrane, so that the POD membrane passes through the water tank 1 in an S-shape. This method can prolong the cleaning time of the POD membrane in the water tank 1 cavity, that is, the time for sulfate inside the POD membrane to penetrate and migrate into the water, thereby further improving the cleaning effect.

[0066] Preferably, in this embodiment, the driving component includes a first motor and a second motor. The fixed ends of the first motor and the second motor are respectively connected to the side wall of the water tank 1 through a connecting frame. The output end of the first motor is connected to the first drive roller 201, and the output end of the second motor is connected to the second drive roller 202. The first drive roller 201 and its corresponding connecting frame are rotatably connected, and the second drive roller 202 and its corresponding connecting frame are rotatably connected.

[0067] The rotation direction of the first active roller 201 is the same as that of the second active roller 202.

[0068] Optionally, the driving component includes a drive motor, a first gear, a second gear, and a transmission belt. The first gear is connected to one end of the first drive roller 201, and the second gear is connected to one end of the second drive roller 202. The first gear and the second gear are connected by a transmission belt. The output end of the drive motor is fixedly connected to the first gear. The drive motor drives the first gear to rotate, which in turn drives the second gear to rotate, causing the first drive roller 201 and the second drive roller 202 to rotate, thus pulling the POD membrane through the receiving cavity. This design does not depart from the intended purpose of this utility model and therefore should fall within the protection scope of this utility model.

[0069] According to one embodiment of the present invention, at least one pressure roller 7 is provided in the receiving cavity, and a gap is left between the pressure roller 7 and its corresponding driven roller 203 for the POD film to pass through.

[0070] The pressure roller 7 ensures that the POD membrane is squeezed every time it passes through the gap, thus squeezing out the water and sulfate inside the POD membrane and improving the desalination effect.

[0071] Of course, in this embodiment, the pressure roller 7 can also correspond one-to-one with the driven roller 203, so that the POD membrane can be squeezed multiple times to discharge sulfate and water, thereby improving the desalination effect.

[0072] The traction assembly 2 also includes an adjustment component, which corresponds one-to-one with the pressure roller 7. The adjustment component is used to adjust the size of the gap between the pressure roller 7 and its corresponding driven roller 203. The axis of the pressure roller 7 is parallel to the axis of the driven roller 203. A second through hole is opened in the pressure roller 7. A second round shaft is rotatably connected to the second through hole through a second bearing. Both ends of the second round shaft are connected to strip plates. Multiple third through holes are opened on the strip plates. Multiple threaded grooves are opened on the side wall of the water tank 1. After the bolt passes through the third through hole, it is screwed into one of the threaded grooves. By adjusting the size of the gap between the pressure roller 7 and the driven roller 203 through the threaded grooves at different positions, the degree of compression can be adjusted, so as to achieve a better desalination effect without damaging the POD membrane.

[0073] According to one embodiment of the present invention, the water supply component 3 includes a first connecting pipe 301, a second connecting pipe 302, and a centrifugal pump 304;

[0074] One end of the first connecting pipe 301 is connected to the water tank 1, and the other end of the first connecting pipe 301 is connected to the water inlet of the centrifugal pump 304.

[0075] One end of the second connecting pipe 302 is connected to the outlet of the centrifugal pump 304, and the other end is connected to one end of the third connecting pipe 303. The other end of the third connecting pipe 303 is connected to the spray pipe 4.

[0076] The second connecting pipe 302 and the third connecting pipe 303 are connected by a fourth connecting pipe.

[0077] The first connecting pipe 301 is connected to the water tank 1, which can draw water from the water tank 1 and then spray it out through the spray pipe 4, thereby increasing the flow rate of water in the water tank 1, thereby increasing the concentration difference inside and outside the POD membrane and accelerating the permeation and migration rate of sulfate.

[0078] Preferably, multiple water spray pipes 4 are provided, and the multiple water spray pipes 4 are arranged at intervals along the length direction of the water tank 1. The third connecting pipe 303 corresponds to each of the water spray pipes 4, and the third connecting pipe 303 and the water spray pipe 4 are sealed and connected by a flange.

[0079] Of course, in this embodiment, one end of the first connecting pipe 301 can also be connected to an external water source.

[0080] According to one embodiment of the present invention, the length direction of the water spray pipe 4 is perpendicular to the conveying direction of the POD membrane;

[0081] Along the length of the water spray pipe 4, multiple water spray holes 401 are spaced apart on the water spray pipe 4. The diameter of the water spray holes 401 is 3-5mm, and the end of the water spray pipe 4 away from the second connecting pipe 302 is closed.

[0082] The conveying direction of the POD membrane refers to the actual transport direction of the POD membrane from the neutralization tank to the water washing and desalination equipment in this embodiment to the longitudinal stretching equipment. The length direction of the water tank 1 is the same as the conveying direction of the POD membrane.

[0083] It should be noted that multiple spray holes 401 are provided on the spray pipe 4 along its circumference. When POD membranes are provided on both sides of the spray pipe 4, the POD membranes on both sides of the spray pipe 4 can be rinsed, resulting in higher cleaning efficiency.

[0084] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0085] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0086] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency water washing and desalination device, characterized in that, The system includes a cleaning mechanism, which comprises a water tank (1), a traction assembly (2), a water supply assembly (3), and a spray pipe (4). The water tank (1) has a receiving cavity for holding clean water; The traction assembly (2) is used to pull the POD membrane through the receiving cavity; The water supply component (3) is connected to the water spray pipe (4), and the water supply component (3) is used to supply water to the water spray pipe (4); The water spray pipe (4) is located inside the receiving cavity, and the water spray pipe (4) is provided with a water spray hole (401) for spraying water toward the POD membrane.

2. The high-efficiency water washing and desalination equipment according to claim 1, characterized in that, The cleaning mechanism is provided in multiple sets, and the multiple sets of cleaning mechanisms are arranged sequentially along the conveying direction of the POD membrane.

3. The high-efficiency water washing and desalination equipment according to claim 1, characterized in that, The cleaning mechanism also includes an ultrasonic generator (5), which is connected inside the receiving cavity.

4. The high-efficiency water washing and desalination equipment according to claim 3, characterized in that, A U-shaped frame is fixedly connected inside the water tank (1). The U-shaped frame has a rectangular channel that communicates with the receiving cavity. Multiple ultrasonic generators (5) are fixedly connected to the two opposite side walls of the rectangular channel.

5. The high-efficiency water washing and desalination equipment according to claim 1, characterized in that, A heating pipe (6) is provided inside the water tank (1), and the heating pipe (6) is used to heat the clean water in the receiving cavity.

6. The high-efficiency water washing and desalination equipment according to claim 5, characterized in that, The heating tube (6) is a hot steam tube.

7. The high-efficiency water washing and desalination equipment according to claim 1, characterized in that, The traction assembly (2) includes a first driving roller (201), a second driving roller (202), a driving component, and a plurality of driven rollers (203); The driving component is used to drive the first active roller (201) and the second active roller (202) to rotate about their respective axes; The axial direction of the first driving roller (201), the axial direction of the second driving roller (202), and the axial direction of the driven roller (203) are the same; The first active roller (201) and the second active roller (202) are located at the feed end and the discharge end of the water tank (1), respectively; The plurality of driven rollers (203) are located within the receiving cavity, and the plurality of driven rollers (203) are rotatably connected within the receiving cavity. The plurality of driven rollers (203) cooperate to drive the POD film.

8. The high-efficiency water washing and desalination equipment according to claim 7, characterized in that, At least one pressure roller (7) is provided in the receiving cavity, and a gap is left between the pressure roller (7) and the corresponding driven roller (203) for the POD film to pass through.

9. The high-efficiency water washing and desalination equipment according to claim 1, characterized in that, The water supply assembly (3) includes a first connecting pipe (301), a second connecting pipe (302), a third connecting pipe (303), and a centrifugal pump (304); One end of the first connecting pipe (301) is connected to the water tank (1), and the other end of the first connecting pipe (301) is connected to the inlet of the centrifugal pump (304). One end of the second connecting pipe (302) is connected to the outlet of the centrifugal pump (304), and the other end is connected to one end of the third connecting pipe (303). The other end of the third connecting pipe (303) is connected to the spray pipe (4).

10. The high-efficiency water washing and desalination equipment according to claim 9, characterized in that, The length direction of the water spray pipe (4) is perpendicular to the conveying direction of the POD membrane; Along the length of the water spray pipe (4), a plurality of water spray holes (401) are spaced apart on the water spray pipe (4).

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