A forward osmosis membrane glycerol spray nozzle

Abstract

The utility model relates to technical fields provides a kind of nozzle of normal osmosis membrane glycerol spraying, in spraying process, nozzle body moves to scraper, so that the pushing ridge of oil receiving body is in abutment on the surface of scraper, and continue to draw close to scraper, so that oil receiving body slides in nozzle body, compresses elastic member, so that the one end of oil receiving cavity retreats to the side of spraying end far from scraper, exposes spraying end, it is convenient for nozzle body to spray glycerol to the gap between scraper and base film. Meanwhile, after completing spraying, nozzle body is far from scraper, so that oil receiving body loses thrust. At this time under the action of elastic member, drive oil receiving body to slide along the side of drawing close to scraper, so that the one end of oil receiving cavity is located below spraying end. Like this even glycerol that drops is received by oil receiving cavity, avoid extra glycerol to drop on base film, to facilitate guarantee that the coating thickness on base film meets the required thickness. Meanwhile, also avoid extra glycerol to drop on film scraping coating equipment and cause pollution, guarantee equipment stable to carry out.

Description

Technical Field

[0001] This utility model relates to the field of forward osmosis membrane technology, and in particular to a nozzle for spraying glycerin onto a forward osmosis membrane. Background Technology

[0002] Forward osmosis membranes, with their unique separation mechanism, have broad application prospects in many fields such as seawater desalination, wastewater resource utilization, food and biopharmaceutical refining, and are regarded as an important direction for the development of membrane separation technology.

[0003] Current membrane coating equipment generally consists of three parts: slot extrusion feeding, slot coating, and rapid curing. In the slot coating process, glycerin is typically sprayed through a nozzle into the slot between the doctor blade and the base membrane. After spraying, the base membrane is moved by a roller and evenly coated onto the base membrane by the doctor blade to form a forward osmosis membrane. However, due to the structural design of traditional nozzles, excess glycerin easily drips onto the base membrane during spraying, causing a deviation in the base membrane thickness from the required thickness. Simultaneously, the dripping glycerin can also fall onto the membrane coating equipment, contaminating it and potentially affecting its normal operation over time. Utility Model Content

[0004] Based on the above background, the purpose of this utility model is to provide a nozzle for spraying glycerin onto a forward osmosis membrane.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A nozzle for spraying glycerin through a forward osmosis membrane includes: a nozzle body having a spraying channel, one end of which is a spraying end and the other end is connected to a transfer pipe; an oil receiving body slidably disposed on the nozzle body, the oil receiving body having an oil receiving cavity on its surface facing the nozzle body, and a pushing protrusion on the oil receiving body; and an elastic member disposed between the oil receiving body and the nozzle body, for elastically pushing the oil receiving body so that one end of the oil receiving cavity is located below the spraying end. When one end of the pushing protrusion abuts against one side of a scraper, the oil receiving body moves along the side away from the scraper, compressing the elastic member, so that one end of the oil receiving cavity is located on the side of the spraying end away from the scraper.

[0007] Furthermore, it also includes a roller and a rotating shaft. One end of the pushing protrusion is provided with a mounting groove. The roller is disposed in the mounting groove through the rotating shaft and partially extends out of the mounting groove. The roller can roll along the length direction of the scraper.

[0008] Furthermore, there are two pushing protrusions, which are located on opposite sides of the nozzle body, and each pushing protrusion has a roller rotatably mounted at one end.

[0009] Furthermore, the nozzle body is provided with a groove extending along its own length, and the oil receiving body is provided with a slider that cooperates with the groove.

[0010] Furthermore, the nozzle body is provided with a protrusion, which is located on the side of the oil receiving body away from the spraying end. The protrusion is provided with a first groove, and the oil receiving body is provided with a second groove. The two ends of the elastic member are respectively inserted into the first groove and the second groove.

[0011] Furthermore, the protrusion is provided with a guide hole, and the oil receiving body is provided with a guide post, which passes through the guide hole.

[0012] Furthermore, the oil receiving body has a guide member at one end facing the spraying end. The surface of the guide member facing the nozzle body is a guide surface. The guide surface is inclined, and the end of the guide surface away from the oil receiving cavity is higher than the end of the guide surface near the oil receiving cavity. The guide member is located below the spraying end under the action of the elastic member, and when the elastic member is compressed, the guide member is located on the side of the spraying end away from the scraper.

[0013] Furthermore, the oil receiving body includes a base plate, a back plate, and two side plates spaced apart on the base plate. The back plate is connected to the base plate and the two side plates to enclose and form the oil receiving cavity. Each side plate is slidably disposed on the nozzle body.

[0014] Furthermore, an oil collecting pipe is provided on the side of the base plate facing away from the oil receiving cavity, and the oil collecting pipe is connected to the oil receiving cavity.

[0015] Furthermore, the side of the base plate facing the oil receiving cavity is a collecting surface, which surrounds the outer periphery of the oil collecting pipe, and the end of the collecting surface away from the oil collecting pipe is higher than the end of the collecting surface close to the oil collecting pipe.

[0016] This utility model has the following beneficial effects:

[0017] (1) During the spraying process, the nozzle body moves to the scraper, causing the pushing protrusion of the oil receiving body to abut against the surface of the scraper and continue to move closer to the scraper. This allows the oil receiving body to slide on the nozzle body, compressing the elastic element and causing one end of the oil receiving cavity to retract to the side of the spraying end away from the scraper, exposing the spraying end. This facilitates the nozzle body spraying glycerin into the gap between the scraper and the base film. Simultaneously, after spraying is complete, the nozzle body moves away from the scraper, causing the oil receiving body to lose its thrust. At this point, under the action of the elastic element, the oil receiving body is driven to slide along the side close to the scraper, so that one end of the oil receiving cavity is located below the spraying end. This ensures that any dripping glycerin is caught by the oil receiving cavity, preventing excess glycerin from falling onto the base film, thus helping to ensure that the coating thickness on the base film meets the required thickness. It also prevents excess glycerin from falling onto the film coating equipment and causing contamination, ensuring stable operation of the equipment.

[0018] (2) A driveable roller is provided at one end of the pushing convex strip. The roller abuts against the surface of the scraper, compressing the elastic element and exposing the spraying end. When spraying glycerin, the roller can roll along the length of the scraper, reducing friction during the spraying process. This allows the nozzle body to move along the length and spray glycerin, ensuring that the glycerin is effectively sprayed into the gap between the scraper and the base film to form a stable forward osmosis membrane.

[0019] (3) By using the groove and the slider, the oil receiving body slides more smoothly on the nozzle body, making it easier for the oil receiving cavity to extend beyond the spraying end or retract into the spraying end, so as to achieve effective and stable oil receiving or spraying operation.

[0020] (4) An oil collection pipe is installed on the side of the bottom plate facing away from the oil receiving cavity, so that excess glycerin can be extracted through the oil collection pipe, thereby enabling the excess glycerin to be effectively recovered and improving the utilization rate of glycerin. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the nozzle structure for preventing glycerin dripping as described in one embodiment;

[0022] Figure 2 This is a schematic diagram of the nozzle structure during spraying as described in one embodiment;

[0023] Figure 3 Here is an exploded view of the nozzle structure described in one embodiment;

[0024] Figure 4 This is a schematic diagram of the nozzle body structure for preventing glycerin dripping in one embodiment;

[0025] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle circle;

[0026] Figure 6This is a schematic diagram of the structure of the oil receiving body described in one embodiment. Figure 1 ;

[0027] Figure 7 for Figure 6 Enlarged view of the structure at point B in the middle circle;

[0028] Figure 8 This is a schematic diagram of the structure of the oil receiving body described in one embodiment. Figure 2 ;

[0029] Figure 9 This is a schematic diagram of the structure of the oil receiving body described in one embodiment. Figure 3 .

[0030] Explanation of icon numbers:

[0031] 10. Nozzle body; 11. Spraying channel; 12. Spraying end; 13. Slide groove; 20. Oil receiving body; 21. Oil receiving cavity; 22. Base plate; 221. Gathering surface; 23. Back plate; 24. Side plate; 25. Oil collecting pipe; 26. Pushing protrusion; 261. Mounting groove; 262. Rotating shaft; 263. Roller; 27. Second groove; 28. Guide post; 30. Slider; 40. Protrusion; 41. First groove; 42. Guide hole; 50. Elastic element; 60. Guide element; 61. Guide surface; 70. Transfer pipe; 80. Scraper. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] In one embodiment, please refer to Figures 1 to 9 This application provides a nozzle for spraying glycerin through a forward osmosis membrane, comprising: a nozzle body 10 having a spraying channel 11, one end of which is a spraying end 12, and the other end for communicating with a transmission pipe 70; an oil receiving body 20 slidably disposed on the nozzle body 10, and having an oil receiving cavity 21 on the surface of the oil receiving body 20 facing the nozzle body 10, and having a pushing protrusion 26 on the oil receiving body 20; and an elastic member 50 disposed between the oil receiving body 20 and the nozzle body 10 for elastically pushing the oil receiving body 20 such that one end of the oil receiving cavity 21 is located below the spraying end 12. When one end of the pushing protrusion 26 abuts against one side of the scraper 80, the oil receiving body 20 moves along the side away from the scraper 80, compressing the elastic member 50, so that one end of the oil receiving cavity 21 is located on the side of the spraying end 12 away from the scraper 80.

[0036] In the aforementioned forward osmosis membrane glycerin spraying nozzle, during the spraying process, the nozzle body 10 moves to the scraper 80, causing the pushing protrusion 26 of the oil receiving body 20 to abut against the surface of the scraper 80 and continue to move closer to the scraper 80. This allows the oil receiving body 20 to slide within the nozzle body 10, compressing the elastic element 50. This causes one end of the oil receiving cavity 21 to retract to the side of the spraying end 12 away from the scraper 80, exposing the spraying end 12. This facilitates the nozzle body 10 spraying glycerin into the gap between the scraper 80 and the base membrane. Simultaneously, after spraying is complete, the nozzle body 10 moves away from the scraper 80, causing the oil receiving body 20 to lose its thrust. At this point, under the action of the elastic element 50, the oil receiving body 20 is driven to slide along the side close to the scraper 80, so that one end of the oil receiving cavity 21 is located below the spraying end 12. This ensures that any dripping glycerin is caught by the oil receiving cavity 21, preventing excess glycerin from falling onto the base membrane, thus helping to ensure that the coating thickness on the base membrane meets the required thickness. At the same time, it also prevents excess glycerin from falling onto the film coating equipment and causing contamination, ensuring stable operation of the equipment.

[0037] It should be explained that, before or after spraying, the nozzle body 10 moves away from the scraper 80, so that the pushing ridge 26 is no longer pushed by the scraper 80. At this time, the elastic element 50 pushes the oil receiving body 20 to move, so that one end of the oil receiving cavity 21 extends beyond the spraying end 12 and is located below it. In this way, even if oil drips, it will be automatically received by the oil receiving cavity 21, preventing it from dripping onto the base film or equipment. During the spraying operation, the nozzle body 10 is tilted towards the scraper 80, so that the pushing ridge 26 abuts against the scraper 80, pushing the oil receiving body 20 back, causing one end of the oil receiving cavity 21 to retract, exposing the spraying end. In this way, the sprayed glycerin can enter the gap between the scraper 80 and the base film.

[0038] At the same time, pushing the convex strip 26 against the scraper 80 can ensure that a suitable gap is always maintained between the spraying end 12 and the scraper 80, which can not only ensure that the glycerin is sprayed out stably, but also spray it evenly between the scraper 80 and the base film.

[0039] In addition, the pushing ridge 26 must always extend beyond the spraying end 12. In this way, during the spraying process, the pushing ridge 26 can be used to push the oil receiving body 20 to stay on the side of the spraying end 12 away from the scraper 80, ensuring that the spraying work is carried out stably.

[0040] The connection method between the pusher 26 and the oil receiving body 20 can be, but is not limited to, welding, snap-fitting, threaded connection or integral molding.

[0041] Further, please refer to Figure 6 and Figure 7 It also includes a roller 263 and a rotating shaft 262. One end of the pushing protrusion 26 is provided with a mounting groove 261. The roller 263 is located in the mounting groove 261 via the rotating shaft 262, and partially extends out of the mounting groove 261. The roller 263 can roll along the length direction of the scraper 80. It can be seen that a driveable roller 263 is provided at one end of the pushing protrusion 26. In this way, the roller 263 abuts against the surface of the scraper 80, so that the elastic element 50 is compressed, exposing the spraying end 12. When spraying glycerin, the roller 263 can roll along the length direction of the scraper 80, reducing friction during the spraying process, allowing the nozzle body 10 to move along the length direction and spray glycerin, so that the glycerin is effectively sprayed into the gap between the scraper 80 and the base film to form a stable forward osmosis membrane.

[0042] It should be explained that the roller 263 can be made of plastic or have an outer rubber coating to reduce scratches on the surface of the scraper 80.

[0043] Furthermore, please refer to Figure 6 and Figure 7There are two pushing protrusions 26, which are located on opposite sides of the nozzle body 10, and each pushing protrusion 26 has a roller 263 rotatably mounted at one end. This ensures that the oil receiving body 20 is subjected to balanced force on the scraper 80, thereby improving the stability of the spraying operation.

[0044] In one embodiment, please refer to Figures 3 to 5 The nozzle body 10 is provided with a groove 13 extending along its own length, and the oil receiving body 20 is provided with a slider 30 that cooperates with the groove 13. It can be seen that the cooperation between the groove 13 and the slider 30 makes the sliding of the oil receiving body 20 on the nozzle body 10 more stable, which makes it easier for the oil receiving cavity 21 to extend beyond the spraying end 12 or retract into the spraying end 12, so as to achieve effective and stable oil receiving or spraying operation.

[0045] It should be explained that there can be one or two slide grooves 13. When there are two slide grooves 13, there can also be two sliders 30 on the oil receiving body 20. The two slide grooves 13 can be respectively set on opposite sides of the nozzle body 10, and the sliders 30 and slide grooves 13 are configured one-to-one.

[0046] In one embodiment, please refer to Figure 5 and Figure 6 The nozzle body 10 is provided with a boss 40, which is located on the side of the oil receiving body 20 away from the spraying end 12. The boss 40 is provided with a first groove 41, and the oil receiving body 20 is provided with a second groove 27. The two ends of the elastic element 50 are respectively inserted into the first groove 41 and the second groove 27. It can be seen that the first groove 41 and the second groove 27 ensure the stable installation of the elastic element 50 and reduce the structural instability caused by twisting during compression.

[0047] Furthermore, the boss 40 is provided with a guide hole 42, and the oil receiving body 20 is provided with a guide post 28, which passes through the guide hole 42. It can be seen that the cooperation between the guide hole 42 and the guide post 28 makes the sliding of the oil receiving body 20 more stable.

[0048] It should be explained that the number of guide holes 42 and guide posts 28 can be one or more. For example, there can be two guide posts 28 and guide holes 42, configured in a one-to-one ratio.

[0049] In one embodiment, please refer to Figure 1 , Figure 6 and Figure 8The oil receiving body 20 has a guide 60 at one end facing the spraying end 12. The surface of the guide 60 facing the nozzle body 10 is a guide surface 61, which is inclined. The end of the guide surface 61 away from the oil receiving cavity 21 is higher than the end of the guide surface 61 near the oil receiving cavity 21. Under the action of the elastic member 50, the guide 60 is located below the spraying end 12. When the elastic member 50 is compressed, the guide 60 is located on the side of the spraying end 12 away from the scraper 80. It can be seen that during the spraying process, the nozzle body 10 moves to the scraper 80, so that the pushing protrusion 26 of the oil receiving body 20 abuts against the surface of the scraper 80 and continues to move closer to the scraper 80, so that the oil receiving body 20 slides on the nozzle body 10, compressing the elastic member 50, so that the guide 60 moves back to the side of the spraying end 12 away from the scraper 80, exposing the spraying end 12, which facilitates the nozzle body 10 to spray glycerin into the gap between the scraper 80 and the base film. Simultaneously, after spraying is completed, the nozzle body 10 moves away from the scraper 80, causing the oil receiving body 20 to lose its thrust. At this time, under the action of the elastic element 50, the oil receiving body 20 is driven to slide along the side close to the scraper 80, so that the guide 60 is located below the spraying end 12. In this way, even if the dripping glycerin is guided by the guide 60 into the oil receiving cavity 21, excess glycerin is prevented from falling onto the base film, thus helping to ensure that the coating thickness on the base film meets the required thickness. At the same time, it also prevents excess glycerin from falling onto the film coating equipment and causing contamination, ensuring stable operation of the equipment.

[0050] It should be explained that the connection between the guide 60 and the oil receiving body 20 can be, but is not limited to, bolt connection, snap-fit, welding or integral molding.

[0051] In one embodiment, please refer to Figure 8 The oil receiving body 20 includes a base plate 22, a back plate 23, and two side plates 24 spaced apart on the base plate 22. The back plate 23 is connected to the base plate 22 and the two side plates 24 to form an oil receiving cavity 21. Each side plate 24 is slidably disposed on the nozzle body 10. It can be seen that a stable oil receiving cavity 21 can be formed.

[0052] It should be explained that the base plate 22, back plate 23, and side plate 24 are an integrated structure. Also, when the pusher is mounted on the oil receiving body 20, the pusher can be positioned at the end of the base plate 22 furthest from the back plate 23.

[0053] In one embodiment, please refer to Figure 8 An oil collecting pipe 25 is provided on the side of the base plate 22 facing away from the oil receiving cavity 21, and the oil collecting pipe 25 is connected to the oil receiving cavity 21. It can be seen that the oil collecting pipe 25 is provided on the side of the base plate 22 facing away from the oil receiving cavity 21, so that excess glycerin can be drawn out through the oil collecting pipe 25, thereby enabling the excess glycerin to be effectively recovered and improving the utilization rate of glycerin.

[0054] Further, please refer to Figure 8 and Figure 9 The side of the base plate 22 facing the oil receiving cavity 21 is a collecting surface 221. The collecting surface 221 surrounds the outer periphery of the oil collecting pipe 25, and the end of the collecting surface 221 away from the oil collecting pipe 25 is higher than the end of the collecting surface 221 near the oil collecting pipe 25. It can be seen that the collecting surface 221 ensures that all excess glycerin received is collected in the oil collecting pipe 25.

[0055] It should be explained that a control valve, such as a solenoid valve, gate valve, or ball valve, can be installed on the oil collection pipe 25 to control the discharge of glycerin from the oil collection pipe 25. Simultaneously, during spraying operations, one end of a hose can be connected to the oil collection pipe 25, and the other end to a suction pump, to achieve automated recovery.

[0056] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A forward osmosis membrane glycerol spray nozzle characterized by, The utility model relates to a nozzle body (10) has inside spraying channel (11), and one end of spraying channel (11) is spraying end (12), and the other end is used for communicating with transmission pipe (70); Oil receiving body (20) can be slidably arranged on the nozzle body (10), and the surface of the nozzle body (10) is provided with oil receiving cavity (21) towards the oil receiving body (20), and the oil receiving body (20) is provided with pushing convex strip (26); Resilient member (50) is arranged between the oil receiving body (20) and the nozzle body (10), and is used to elastically push the oil receiving body (20), so that one end of the oil receiving cavity (21) is located below the spraying end (12), when one end of the pushing convex strip (26) abuts on one side of the doctor blade (80), the oil receiving body (20) moves away from the one side of the doctor blade (80), compresses the resilient member (50), so that one end of the oil receiving cavity (21) is located on the one side of the spraying end (12) away from the doctor blade (80). Further comprising roller (263) and rotating shaft (262), one end of the pushing convex strip (26) is provided with mounting groove (261), the roller (263) is arranged in the mounting groove (261) through the rotating shaft (262), and part of the roller (263) is arranged outside the mounting groove (261), and the roller (263) can roll along the length direction of the doctor blade (80).

2. A forward osmosis membrane glycerol spray nozzle according to claim 1, wherein, The number of the pushing convex strip (26) is two, and the two pushing convex strips (26) are located on the opposite sides of the nozzle body (10), and one end of each pushing convex strip (26) is rotatably provided with the roller (263).

3. A forward osmosis membrane glycerol spray nozzle according to claim 2, wherein, The nozzle body (10) is provided with sliding groove (13) extending along the length direction of itself, and the oil receiving body (20) is provided with sliding block (30) matched with the sliding groove (13).

4. A forward osmosis membrane glycerol spray nozzle according to claim 1, wherein, The nozzle body (10) is provided with convex seat (40), the convex seat (40) is located on the side of the oil receiving body (20) away from the spraying end (12), the convex seat (40) is provided with first recess (41), the oil receiving body (20) is provided with second recess (27), and the two ends of the resilient member (50) are respectively arranged in the first recess (41) and the second recess (27).

5. A forward osmosis membrane glycerol spray nozzle according to claim 4, wherein, The convex seat (40) is provided with guide hole (42), and the oil receiving body (20) is provided with guide column (28), and the guide column (28) is arranged in the guide hole (42).

6. A forward osmosis membrane glycerol spray nozzle according to claim 5, wherein, ​ 7. A glycerol sprayed nozzle for a forward osmosis membrane according to any one of claims 1 to 6, wherein, The oil receiving body (20) is provided with a guide (60) at one end thereof facing the spraying end (12), the surface of the guide (60) facing the nozzle body (10) is a guide surface (61), the guide surface (61) is obliquely arranged, and the end of the guide surface (61) away from the oil receiving cavity (21) is higher than the end of the guide surface (61) close to the oil receiving cavity (21), the guide (60) is located below the spraying end (12) under the action of the elastic member (50), and when the elastic member (50) is compressed, the guide (60) is located on the side of the spraying end (12) away from the scraper (80).

8. A forward osmosis membrane glycerol spray nozzle according to claim 7, wherein, The oil receiving body (20) comprises a bottom plate (22), a back plate (23) and two side plates (24) arranged at intervals on the bottom plate (22), the back plate (23) is connected to the bottom plate (22) and the two side plates (24) to form the oil receiving cavity (21), and each side plate (24) is slidingly arranged on the nozzle body (10).

9. A forward osmosis membrane glycerol spray nozzle according to claim 8, wherein, The side of the bottom plate (22) away from the oil receiving cavity (21) is provided with an oil collecting pipe (25), and the oil collecting pipe (25) is in communication with the oil receiving cavity (21).

10. A forward osmosis membrane glycerol spray nozzle according to claim 9, wherein, The side of the bottom plate (22) facing the oil receiving cavity (21) is a collection surface (221), the collection surface (221) surrounds the outer periphery of the oil collecting pipe (25), and the end of the collection surface (221) away from the oil collecting pipe (25) is higher than the end of the collection surface (221) close to the oil collecting pipe (25).

Images