Nanofiltration equipment for water treatment

Abstract

The present invention relates to the technical field of water treatment, and in particular to a nanofiltration device for water treatment; the device comprises a frame, a shell is fixedly mounted on the upper end of the frame; a membrane core is arranged inside the shell; end covers and plugs are arranged at both ends of the shell and are slidingly sealed with the inner wall of the shell; the present invention provides a pushing wheel so that the pushing wheel can push the membrane core in the shell to extend out from one end of the shell, that is, there is no need to use a wire rope to pull the membrane core in a narrow space, and three pushing wheels are arranged around the outside of the membrane core, so that the membrane core pushed by the three pushing wheels is stably located on the central axis of the shell, so that the membrane core pushed by the pushing wheels will not tilt in the shell, and the uneven stress distribution between the membrane core and the shell caused by extrusion is avoided, which not only prevents the membrane core from being deformed and damaged due to extrusion, thereby ensuring the quality of the membrane core, but also prevents the inner wall of the shell from being worn and fatigued due to extrusion, thereby improving the service life of the shell.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to a nanofiltration device for water treatment. Background Art

[0002] Nanofiltration equipment is a common water treatment equipment, which is often used to remove tiny particles, microorganisms and organic matter in water. Its working principle is to use nanofiltration membrane to filter water, allowing only water molecules and smaller soluble substances to pass through, while preventing larger particles, ions and organic matter from passing through. After long-term operation, the membrane core of the nanofiltration membrane will cause the accumulation of dirt, sediment and microorganisms on the surface of the membrane core of the nanofiltration membrane, which will affect the performance and filtration efficiency of the nanofiltration equipment. Therefore, the membrane core needs to be replaced and cleaned regularly to remove the pollutants on the surface of the core and restore the filtration efficiency of the membrane core of the nanofiltration membrane.

[0003] When replacing the membrane core, the user needs to first disassemble the pipe connected to the nanofiltration membrane, then disassemble and remove the membrane plugs at both ends of the nanofiltration membrane shell, and then use a roller to push the core out of the shell; however, due to long-term filtration use, the water contains tiny particles, which may be intercepted between the membrane core and the shell when the water passes through the nanofiltration equipment, resulting in the accumulation of dirt, increasing the friction between the membrane core and the shell, and making it more difficult to push the membrane core out of the shell;

[0004] Moreover, the use of sticks and other similar tools is easily affected by the installation space, that is, it is impossible to apply thrust in a narrow space. Therefore, in a narrow space, a pulling tool such as a wire rope is often required to pull the membrane core out of the shell. Although the pulling tool such as the wire rope can pull the membrane core out of the shell in a small space, the direction of the pulling force applied by the wire rope to the membrane core cannot be fully controlled due to the influence of the small space, which can easily cause the membrane core to tilt in the shell, causing uneven stress distribution between the membrane core and the shell, resulting in the membrane core being squeezed and deformed, and the inner wall of the shell being worn and fatigued, thereby reducing the durability of the shell and greatly reducing the service life of the shell.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a nanofiltration device for water treatment, which solves the above technical problems. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art, the present invention proposes a nanofiltration device for water treatment. The present invention arranges a pushing wheel so that the pushing wheel can push the membrane core in the shell to extend out from one end of the shell, that is, there is no need to use a wire rope to pull the membrane core in a narrow space, and three pushing wheels are surrounded by the outside of the membrane core, so that the membrane core pushed by the three pushing wheels is stably located on the central axis of the shell, so that the membrane core pushed by the pushing wheels will not tilt in the shell, avoiding uneven stress distribution between the membrane core and the shell caused by extrusion, which not only prevents the membrane core from being deformed and damaged due to extrusion, thereby ensuring the quality of the membrane core, but also prevents wear and fatigue of the inner wall of the shell due to extrusion, thereby increasing the service life of the shell.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a nanofiltration device for water treatment according to the present invention comprises:

[0008] A frame, a shell is fixedly mounted on the upper end of the frame; a membrane core is arranged inside the shell; end cap plugs are arranged at both ends of the shell and are slidably and sealedly connected to the inner wall of the shell; the end cap plugs are communicated with the membrane core; a delivery pipe connected to the end cap plug is arranged on one side of the shell; a water delivery pipe is installed at one end of the shell away from the delivery pipe;

[0009] A mounting block is fixedly connected to the outer wall of the shell; a mounting groove penetrating the shell is provided on a side of the mounting block close to the shell; a driving wheel is rotatably connected in the mounting groove; a driving motor is fixedly installed on one side of the frame; the driving motor is used to drive the driving wheel to rotate.

[0010] Preferably, the shell surface is rotatably connected to a gear ring; the shell outer wall is rotatably connected to a worm; the worm is rotatably connected to the shell; a worm wheel meshing with the worm is installed on one side of the driving wheel; the worm wheel is rotatably sealed and connected to the side wall of the mounting block; a transmission gear is fixedly connected to the end of the worm away from the worm wheel; the transmission gear is meshed with the gear ring; the output end of the drive motor is fixedly connected to a drive gear meshing with the gear ring.

[0011] Preferably, two driving wheels are arranged in the same installation groove; a driving belt is wound between the two driving wheels; teeth are provided on the surface of the driving wheel; and a convex strip meshing with the teeth is fixedly connected to a side of the driving belt close to the driving wheel.

[0012] Preferably, an annular groove is provided on the surface of the driving wheel; and the cross-sectional shape of the driving belt is set to be an arc.

[0013] Preferably, a boosting groove is provided on a side of the pushing belt away from the pushing wheel; the boosting groove is in a V-shape.

[0014] Preferably, a slide plate is slidably connected to one side of the mounting groove; the slide plate is connected to the lower end wall of the mounting groove by a supporting spring; the pushing wheel is rotatably connected to the slide plate; a pushing groove is provided on the inner wall of the shell; a pressure plate is slidably connected in the pushing groove; a groove connected to the pushing groove is provided on the inner wall of the shell; a baffle is slidably and sealably connected in the groove; the baffle is fixedly connected to the bottom of the groove by a connecting spring; the baffle is used to block the mounting groove; the baffle and the slide plate are fixedly connected by a fiberglass rope.

[0015] Preferably, an elastic sheet is fixedly connected to a side of the baffle away from the mounting groove; the elastic sheet is located at an end of the baffle away from the groove; and the elastic sheet is made of PTFE material.

[0016] Preferably, a dust removal groove is provided on the inner wall of the shell; a sealing plate is slidingly and sealingly connected in the dust removal groove; and the dust removal groove is connected to the push groove.

[0017] Preferably, a rectangular groove penetrating the slide is provided on one side of the driving wheel close to the worm gear; a connecting rod is slidably connected in the rectangular groove; a magnet is inlaid on one side of the connecting rod close to the rectangular groove; an electromagnetic sheet is inlaid at the bottom of the rectangular groove; and a clamping groove is provided on the end of the worm wheel away from the worm.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention provides a pushing wheel so that the pushing wheel can push the membrane core in the shell to extend out from one end of the shell, that is, there is no need to use a wire rope to pull the membrane core in a narrow space, and three pushing wheels are surrounded by the outside of the membrane core, so that the membrane core pushed by the three pushing wheels is stably located on the central axis of the shell, so that the membrane core pushed by the pushing wheels will not tilt in the shell, avoiding uneven stress distribution between the membrane core and the shell caused by extrusion, not only preventing the membrane core from being deformed and damaged due to extrusion, ensuring the quality of the membrane core, but also preventing the inner wall of the shell from being worn and fatigued due to extrusion, thereby increasing the service life of the shell.

[0020] 2. The present invention provides a tooth groove on the surface of the driving wheel, and a convex strip is fixedly connected to the side of the driving belt close to the driving wheel, so that the driving wheel pushes the convex strip engaged in the tooth groove through the tooth groove on the surface to drive the entire driving belt to rotate, thereby avoiding the slipping problem between the driving wheel and the driving belt, ensuring that the driving wheel can effectively push the membrane core out of the shell quickly through the driving belt, thereby facilitating the operator to replace the membrane core, and by fixing the convex strip on the side of the driving belt close to the driving wheel, the surface strength of the driving belt with the boosting groove can be improved, thereby increasing the service life of the driving belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 It is a schematic diagram of the structure of the housing used in the present invention;

[0025] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0026] Figure 5 It is a transmission stereogram of the push belt used in the present invention;

[0027] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0028] In the figure: 1, frame; 11, shell; 111, gear ring; 112, worm; 113, worm wheel; 114, transmission gear; 12, membrane core; 13, end cover plug; 14, delivery pipe; 15, water delivery pipe; 16, driving motor; 161, driving gear; 17, pushing groove; 171, pressure plate; 18, groove; 181, baffle; 182, connecting spring; 183, elastic sheet; 19, dust removal groove; 191, sealing plate; 2, mounting block; 21, mounting groove; 22, driving wheel; 221, tooth groove; 222, annular groove; 23, driving belt; 231, convex strip; 232, boosting groove; 24, slide plate; 241, support spring; 242, fiberglass rope; 25, rectangular groove; 251, connecting rod; 252, magnet; 253, electromagnetic sheet; 26, card slot. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 6 As shown, a nanofiltration device for water treatment according to the present invention comprises:

[0031] A frame 1, a shell 11 is fixedly mounted on the upper end of the frame 1; a membrane core 12 is arranged inside the shell 11; end cap plugs 13 are arranged at both ends of the shell 11 and are slidably sealed with the inner wall of the shell 11; the end cap plugs 13 are connected to the membrane core 12; a delivery pipe 14 connected to the end cap plug 13 is arranged on one side of the shell 11; a water delivery pipe 15 is installed at one end of the shell 11 away from the delivery pipe 14;

[0032] A mounting block 2 is fixedly connected to the outer wall of the shell 11; a mounting groove 21 penetrating the shell 11 is provided on one side of the mounting block 2 close to the shell 11; a driving wheel 22 is rotatably connected in the mounting groove 21; a driving motor 16 is fixedly installed on one side of the frame 1; the driving motor 16 is used to drive the driving wheel 22 to rotate.

[0033] As an embodiment of the present invention, a gear ring 111 is rotatably connected to the surface of the shell 11; a worm 112 is rotatably connected to the outer wall of the shell 11; the worm 112 is rotatably connected to the shell 11; a worm wheel 113 meshing with the worm 112 is installed on one side of the driving wheel 22; the worm wheel 113 is rotatably sealed and connected to the side wall of the mounting block 2; a transmission gear 114 is fixedly connected to the end of the worm 112 away from the worm wheel 113; the transmission gear 114 meshes with the gear ring 111; the output end of the drive motor 16 is fixedly connected to a drive gear 161 meshing with the gear ring 111.

[0034] As an embodiment of the present invention, two pushing wheels 22 are arranged in the same installation groove 21; a pushing belt 23 is wound between the two pushing wheels 22; a tooth groove 221 is opened on the surface of the pushing wheel 22; and a convex strip 231 engaged with the tooth groove 221 is fixedly connected to the side of the pushing belt 23 close to the pushing wheel 22.

[0035] As an implementation mode of the present invention, an annular groove 222 is formed on the surface of the driving wheel 22; and the cross-sectional shape of the driving belt 23 is set to be an arc.

[0036] As an embodiment of the present invention, a boosting groove 232 is provided on a side of the pushing belt 23 away from the pushing wheel 22; the boosting groove 232 is V-shaped;

[0037] When working, the structure of the membrane core 12 is that a permeate spacer is inserted between two membrane sheets, and the membrane roll is formed by winding around a central tube. A membrane sleeve made of a tempered glass material is provided on the outer surface of the membrane roll to keep the shape of the membrane stable and prevent the feed liquid from stretching the membrane roll structure. Anti-stretching parts are fixedly connected at both ends of the membrane roll to protect the membrane from damage caused by the pressure drop in the flow direction. All these components together constitute a membrane core 12, which has a compact and effective structure.

[0038] In the initial state, two adjacent gear rings 111 are connected by belt transmission; the end cover plug 13 is fixed to the inner wall of the shell 11 through a fixing plate, the end cover plug 13 at one end of the shell 11 is connected to the delivery pipe 14, and the end cover plug 13 at the other end is closed by a plugging cover connected by a thread; the water delivery pipe 15 will transport the raw water to be purified from the side wall of the shell 11 to between the end cover plug 13 and the membrane core 12, so that the raw water passes through the anti-telescoping member and enters between the diaphragms of the membrane core 12, so that the raw water entering between the diaphragms is affected by liquid pressure, so that the pure water in the raw water is filtered through the liquid separation net and enters the central tube through the filter holes of the central tube; since at least three membrane cores 12 are arranged inside a shell 11, and two adjacent membrane cores 12 are connected by a connecting pipe sliding seal, which makes the central tubes of the three membrane cores 12 filtered by the core, so the central tubes of the three membrane cores 12 are sealed and connected by the connecting pipe, so that the pure water filtered by the three membrane cores 12 enters the delivery pipe 14 through the central tube and the connecting pipe, so that the delivery pipe 14 filters the membrane core 12 The filtered pure water is transported for easy collection; when the membrane core 12 needs to be replaced, the user needs to first disassemble the pipe connected to the nanofiltration membrane, then disassemble and remove the end cap plugs 13 at both ends of the shell 11 of the nanofiltration membrane, and then use a roller to push the core in the shell 11 out; but the use of sticks and other similar tools is easily affected by the installation space, that is, it is impossible to apply thrust in a narrow space, so in a narrow space, a pulling tool such as a wire rope is often required to pull the membrane core 12 out of the shell 11; and although the pulling tool such as the wire rope can pull the membrane core 12 out of the shell 11 in a small space, it is affected by the small space, so that the direction of the pulling force applied by the wire rope to the membrane core 12 cannot be fully controlled, and the membrane core 12 is easy to tilt in the shell 11, causing uneven stress distribution between the membrane core 12 and the shell 11, causing the membrane core 12 to be squeezed and deformed, and the inner wall of the shell 11 is worn and fatigued, thereby reducing the durability of the shell 11, and greatly reducing the service life of the shell 11;

[0039] In this regard, the present invention provides a driving wheel 22 so that the driving wheel 22 can drive the membrane core 12 in the shell 11 to extend out from one end of the shell 11, that is, in a narrow space, there is no need to use a wire rope to pull the membrane core 12, and three driving wheels 22 are surrounded by the outside of the membrane core 12, so that the membrane core 12 driven by the three driving wheels 22 is stably located on the central axis of the shell 11, so that the membrane core 12 driven by the driving wheels 22 will not tilt in the shell 11, avoiding uneven stress distribution between the membrane core 12 and the shell 11 due to extrusion, not only preventing the membrane core 12 from being deformed and damaged due to extrusion, ensuring the quality of the membrane core 12, but also preventing the inner wall of the shell 11 from being worn and fatigued due to extrusion, thereby improving the service life of the shell 11;

[0040] After the user disassembles and removes the end cover plug 13, the drive motor 16 is controlled to operate, so that the drive motor 16 can drive the gear ring 111 connected to the outer wall of the shell 11 to rotate through the drive gear 161, so that the gear ring 111 drives the transmission gear 114 meshing with it to rotate, so that the transmission gear 114 drives the worm 112 fixedly connected with it to rotate, so that during the rotation of the worm 112, the worm 112 can drive the driving wheel 22 to rotate through the worm wheel 113 meshing with it, so that the driving wheel 22 and the membrane core 12 are in rolling contact; since the membrane sleeve of the membrane core 12 is located on the outermost wall of the membrane core 12, The pushing wheel 22 is in rolling contact with the membrane sleeve. When the pushing wheel 22 pushes the membrane core 12, the membrane sleeve not only restrains the membrane roll structure of the membrane core 12, but also protects the membrane roll structure from being squeezed or damaged by the pushing wheel 22, thereby ensuring the quality of the membrane core 12 and improving the service life of the membrane core 12. Since the membrane sleeve made of fiberglass is usually smoothed, the smooth surface of the membrane sleeve helps to reduce the adhesion of dirt and particles, which not only reduces the difficulty of cleaning the membrane core 12, but also reduces the corrosion of the membrane sleeve caused by dirt and particles, improves the corrosion resistance and wear resistance of the membrane sleeve, and makes the membrane sleeve The service life is improved; however, the smooth membrane sleeve will weaken the friction between the push wheel 22 and the surface of the membrane core 12, affecting the pushing effect of the push wheel 22 on the membrane core 12; in this regard, the present invention sets a pushing belt 23, so that the push wheel 22 pushes the membrane core 12 through the pushing belt 23, so that the setting of the pushing belt 23 can increase the contact area between the push wheel 22 and the membrane core 12, thereby strengthening the friction between the pushing belt 23 and the membrane core 12, so that the pushing effect of the pushing belt 23 on the membrane core 12 is improved; and because the membrane core 12 is arc-shaped, by opening the surface of the push wheel 22 An annular groove 222 is provided, and the cross-sectional shape of the annular groove 222 is an arc, so that the cross-sectional shape of the push belt 23 is an arc, so that the arc-shaped push belt 23 can be effectively fitted with the cylindrical surface of the membrane core 12; the contact area between the membrane core 12 and the push belt 23 is further increased, so that the friction between the membrane core 12 and the push belt 23 is further increased, thereby improving the pushing effect of the push wheel 22 on the membrane core 12 in the shell 11; the extension of the membrane core 12 from the shell 11 is accelerated, the replacement time of the membrane core 12 is shortened, and the replacement efficiency of the membrane core 12 of the nanofiltration device is improved; so that the practicality of the present invention is improved;The push belt 23 is provided with a pressure-boosting groove 232 on the side away from the push wheel 22, so that the push belt 23 is squeezed and attached to the surface of the membrane core 12 during the contact with the membrane core 12. Because the push belt 23 is made of fluororubber material, the push belt 23 is not only uniform and corrosion-resistant, but also has good elasticity. When the push belt 23 is attached to the membrane core 12 and blocked by the tempered glass membrane sleeve of the membrane core 12, the push belt 23 will be elastically deformed, so that the pressure-boosting groove 232 on the surface of the push belt 23 is squeezed and deformed, so that the groove wall of the pressure-boosting groove 232 is compressed, the groove bottom of the pressure-boosting groove 232 is close to the membrane core 12, the inner space of the pressure-boosting groove 232 is reduced, and the pressure-boosting groove 232 tends to stretch under the action of the elastic restoring force, so that a negative pressure state is generated in the pressure-boosting groove 232, so that the push belt 23 is attached to the surface of the membrane core 12 through the pressure-boosting groove 232, thereby improving the pushing effect of the push belt 23 on the membrane core 12. However, when the friction between the push belt 23 and the membrane core 12 increases and is greater than the friction between the push wheel 22 and the push belt 23, the push wheel 22 and the push belt 23 are prone to slippage. To this end, the present invention provides a tooth groove 221 on the surface of the push wheel 22, and a convex strip 231 is fixedly connected to the side of the push belt 23 close to the push wheel 22, so that the push wheel 22 pushes the convex strip 231 engaged in the tooth groove 221 through the tooth groove 221 on the surface to push the entire push belt 23 to rotate around, thereby avoiding the slippage between the push wheel 22 and the push belt 23, ensuring that the push wheel 22 can effectively push the membrane core 12 out of the housing 11 quickly through the push belt 23, thereby facilitating the operator to replace the membrane core 12, and by fixing the convex strip 231 on the side of the push belt 23 close to the push wheel 22, the surface strength of the push belt 23 with the boosting groove 232 can also be improved, thereby increasing the service life of the push belt 23. ;

[0041] As an embodiment of the present invention, a slide plate 24 is slidably connected to one side of the mounting groove 21; the slide plate 24 is connected to the lower end wall of the mounting groove 21 by a support spring 241; the pushing wheel 22 is rotatably connected to the slide plate 24; a pushing groove 17 is provided on the inner wall of the shell 11; a pressure plate 171 is slidably connected in the pushing groove 17; a groove 18 connected to the pushing groove 17 is provided on the inner wall of the shell 11; a baffle 181 is slidably and sealably connected in the groove 18; the baffle 181 is fixedly connected to the bottom of the groove 18 by a connecting spring 182; the baffle 181 is used to block the mounting groove 21; the baffle 181 and the slide plate 24 are fixedly connected by a glass fiber rope 242.

[0042] As an embodiment of the present invention, an elastic sheet 183 is fixedly connected to a side of the baffle 181 away from the mounting groove 21; the elastic sheet 183 is located at an end of the baffle 181 away from the groove 18; the elastic sheet 183 is made of PTFE material.

[0043] As an embodiment of the present invention, a dust removal groove 19 is formed on the inner wall of the shell 11 ; a sealing plate 191 is slidably and sealably connected in the dust removal groove 19 ; and the dust removal groove 19 is communicated with the push groove 17 .

[0044] As an embodiment of the present invention, a rectangular groove 25 penetrating the slide plate 24 is provided on a side of the driving wheel 22 close to the worm wheel 113; a connecting rod 251 is slidably connected in the rectangular groove 25; a magnet 252 is embedded in a side of the connecting rod 251 close to the rectangular groove 25; an electromagnetic sheet 253 is embedded in the bottom of the rectangular groove 25; a clamping groove 26 is provided on the end of the worm wheel 113 away from the worm 112;

[0045] During operation, due to the long-term filtration use of the membrane core 12, the tiny particulate matter contained in the raw water is blocked by the permeable liquid separator and intercepted between the membrane sheets of the membrane core 12, and under the impact of the subsequent raw water, it passes through the tensile expansion member to between the membrane core 12 and the shell 11, and is finally discharged from the sewage outlet on the surface of the shell 11; however, the tiny particulate matter between the membrane core 12 and the membrane shell cannot be completely discharged, and some tiny particulate matter will still remain between the membrane core 12 and the membrane shell, and these tiny particulate matter will cause the accumulation of dirt because they remain between the membrane core 12 and the membrane shell. On the one hand, the friction between the membrane core 12 and the shell 11 is increased, making it difficult to push out the membrane core 12 in the shell 11. On the other hand, the dirt will prevent the push belt 23 from contacting the membrane core 12, affecting the pushing effect of the push belt 23 on the membrane core 12. To this end, the present invention sets a baffle 181. When the user puts the end cover plug 13 into the shell 11, the end cover plug 13 will push the pressure plate 171 in the push groove 17 into the push groove 17, so that the hydraulic oil in the push groove 17 enters the groove 18, so that the baffle 181 in the groove 18 is pushed by the hydraulic oil to stretch the connecting spring 182 and extends out of the groove 18, at this time, the baffle 181 blocks the notch of the installation groove 21, so that the dirt between the membrane core 12 and the shell 11 is blocked by the baffle 181 and does not enter the installation groove 21, thereby preventing the dirt from entering the installation groove 21 and blocking the booster groove 232 of the push belt 23; and at this time, the slide plate 24 pushes the push belt 23 into the interior of the installation groove 21 under the support of the support spring 241; when the user removes the end cover plug 13, the baffle 181 enters the groove 18 under the pull of the restoring force of the connecting spring 182, so that the hydraulic oil in the groove 18 flows back to the push groove 17; and in the process of the baffle 181 entering the groove 18, the baffle 181 will drive the elastic sheet 183 away from the end of the groove 18 to move synchronously. Since the elastic sheet 183 is in sliding contact with the membrane core 12, the elastic sheet 183 can push the dirt between the membrane core 12 and the baffle 181 to move synchronously, thereby ensuring the smoothness of the surface of the baffle 181. At this time, the baffle 181 will also pull the slide plate 24 down through the glass fiber rope 242, so that the slide plate 24 drives the push belt 23 to drop synchronously through the push wheel 22, so that the push belt 23 contacts and closely adheres to the surface of the membrane core 12;During the descent of the slide plate 24, the slide plate 24 drives the connecting rod 251 in the rectangular groove 25 to descend through the driving wheel 22 until the rectangular groove 25 is directly opposite to the card slot 26, and the control electromagnetic sheet 253 is energized, so that the electromagnetic sheet 253 generates the same magnetic pole as the magnet 252, so that the magnet 252 drives the connecting rod 251 to extend out of the rectangular groove 25 and approach the card slot 26 under the push of the magnetic repulsion force, and as the driving motor 16 drives the worm gear 113 to rotate, the worm gear 113 drives the card slot 26 to rotate, and when the connecting rod 251 cooperates with the card slot 26, the connecting rod 251 enters the card slot 26, so that the connecting rod 251 connects the worm gear 113 with the driving wheel 16. 22 connection, when the membrane core 12 is taken out, the control electromagnetic sheet 253 is powered off, and at this time, the connecting rod 251 enters the rectangular groove 25 under the action of the adsorption force of the magnet 252, so that the worm 112 is in a separated state from the driving wheel 22 at this time; through the setting of the baffle 181, the baffle 181 can push the dirt on the surface of the membrane core 12 facing the installation groove 21 away from the installation groove 21, which not only prevents the dirt on the surface of the membrane core 12 from contacting with the driving belt 23, so that the driving belt 23 can effectively push the membrane core 12, but also prevents the dirt from clogging the boosting groove 232 on the surface of the driving belt 23, thereby improving the driving force of the driving belt 23 on the membrane core 12 Effect: The replacement speed of the membrane core 12 of the present invention is improved, and the glass fiber rope 242 is provided so that the glass fiber rope 242 can resist the corrosion of acid and alkali substances in the dirt, thereby improving the service life of the glass fiber rope 242; and the provision of the dust removal groove 19 allows the dirt pushed by the elastic sheet 183 to accumulate and push the sealing plate 191 in the dust removal groove 19 to enter the dust removal groove 19, so that the dirt pushed by the elastic sheet 183 can enter the dust removal groove 19 and be located on the side of the sealing plate 191 away from the dust removal groove 19, so that the dirt is accumulated in the dust removal groove 19, thereby avoiding the accumulation of dirt between the membrane core 12 and the shell 11 and increasing the friction between the membrane core 12 and the shell 11 force, reducing the difficulty of replacing the membrane core 12, and after the membrane core 12 is removed, the user inserts the end cover plug 13 into the housing 11 and pushes the pressure plate 171 into the push groove 17 to push the hydraulic oil into the groove 18 and the dust removal groove 19, so that the baffle 181 in the groove 18 blocks the installation groove 21, and the sealing plate 191 in the dust removal groove 19 pushes the dirt on one side to be discharged from the dust removal groove 19, thereby reducing the user's cleaning difficulty for the housing 11; improving the user's replacement efficiency of the membrane core 12; by setting the elastic sheet 183 to be made of PTFE material, the elastic sheet 183 has the characteristics of smooth surface, wear resistance, and dust resistance. ;

[0046] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nanofiltration device for water treatment, characterized in that: include: A frame (1), wherein a shell (11) is fixedly mounted on the upper end of the frame (1); a membrane core (12) is arranged inside the shell (11); end cap plugs (13) are arranged at both ends of the shell (11) and are slidably sealed with the inner wall of the shell (11); the end cap plugs (13) are connected to the membrane core (12); a delivery pipe (14) connected to the end cap plug (13) is arranged on one side of the shell (11); a water delivery pipe (15) is installed at one end of the shell (11) away from the delivery pipe (14); A mounting block (2), the mounting block (2) being fixedly connected to the outer wall of the shell (11); a mounting groove (21) penetrating the shell (11) is provided on a side of the mounting block (2) close to the shell (11); a driving wheel (22) is rotatably connected in the mounting groove (21); a driving motor (16) is fixedly installed on one side of the frame (1); the driving motor (16) is used to drive the driving wheel (22) to rotate; The surface of the housing (11) is rotatably connected to a gear ring (111); the outer wall of the housing (11) is rotatably connected to a worm (112); the worm (112) is rotatably connected to the housing (11); a worm wheel (113) meshing with the worm (112) is mounted on one side of the driving wheel (22); the worm wheel (113) is rotatably sealed and connected to the side wall of the mounting block (2); an end of the worm (112) away from the worm wheel (113) is fixedly connected to a transmission gear (114); the transmission gear (114) is meshed with the gear ring (111); the output end of the driving motor (16) is fixedly connected to a driving gear (161) meshing with the gear ring (111); Two driving wheels (22) are arranged in the same installation groove (21); a driving belt (23) is wound between the two driving wheels (22); a tooth groove (221) is provided on the surface of the driving wheel (22); a convex strip (231) meshing with the tooth groove (221) is fixedly connected to a side of the driving belt (23) close to the driving wheel (22); The surface of the driving wheel (22) is provided with an annular groove (222); the cross-sectional shape of the driving belt (23) is set to be an arc; A pressure-boosting groove (232) is provided on a side of the pushing belt (23) away from the pushing wheel (22); the pressure-boosting groove (232) is in a V-shape.

2. A nanofiltration device for water treatment according to claim 1, characterized in that: A slide plate (24) is slidably connected to one side of the installation groove (21); the slide plate (24) is connected to the lower end wall of the installation groove (21) via a support spring (241); the push wheel (22) is rotatably connected to the slide plate (24); a push groove (17) is provided on the inner wall of the shell (11); a pressure plate (171) is slidably connected in the push groove (17); a groove (18) connected to the push groove (17) is provided on the inner wall of the shell (11); a baffle (181) is slidably and sealingly connected in the groove (18); the baffle (181) is fixedly connected to the bottom of the groove (18) via a connecting spring (182); the baffle (181) is used to block the installation groove (21); the baffle (181) and the slide plate (24) are fixedly connected via a glass fiber rope (242).

3. A nanofiltration device for water treatment according to claim 2, characterized in that: An elastic sheet (183) is fixedly connected to a side of the baffle (181) away from the mounting groove (21); the elastic sheet (183) is located at an end of the baffle (181) away from the groove (18); and the elastic sheet (183) is made of PTFE material.

4. A nanofiltration device for water treatment according to claim 3, characterized in that: The inner wall of the housing (11) is provided with a dust removal groove (19); a sealing plate (191) is slidably and sealably connected inside the dust removal groove (19); and the dust removal groove (19) is communicated with the pushing groove (17).

5. A nanofiltration device for water treatment according to claim 4, characterized in that: A rectangular groove (25) penetrating the slide plate (24) is provided on one side of the driving wheel (22) close to the worm wheel (113); a connecting rod (251) is slidably connected in the rectangular groove (25); a magnet (252) is embedded on one side of the connecting rod (251) close to the rectangular groove (25); an electromagnetic sheet (253) is embedded at the bottom of the rectangular groove (25); and a clamping groove (26) is provided on one end of the worm wheel (113) away from the worm (112).

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