Membrane filtration keel fixing device

Abstract

The utility model relates to the technical field of filtration and separation, in particular to a membrane filtration keel fixing device which comprises a filter shell, a middle partition plate is fixedly connected to the inner wall of the filter shell, a feeding pipe is communicated with the surface of the filter shell, and the upper end of the middle partition plate and the inner wall of the filter shell are combined to form a water storage bin. The water storage bin is communicated with the feeding pipe; the filtering and fixing mechanism is arranged at the lower end of the middle partition plate; according to the membrane filtration keel fixing device, a center keel can be fixed under the action of the fixing assembly, when the membrane filtration keel fixing device is used, a spring abuts against a clamping rod to move upwards, the clamping rod enters a clamping opening under the guiding action of a vertical rod, and therefore the lower end of the center keel is positioned through a connecting block; the condition that the central keel shakes in the using process is avoided, the condition that the filtering membranes collide with one another is avoided, and the service life of the filtering membranes is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration and separation, in particular to a membrane filtration keel fixing device. Background Art

[0002] Membrane filtration equipment is an important industrial equipment. Its working principle is mainly based on the screening effect of membrane pore size. The pressure difference on both sides of the membrane is used as the driving force to achieve effective separation and concentration of the original liquid. Membrane filtration equipment is widely used in the fields of pharmaceuticals, food, cosmetics, and electronics, playing an irreplaceable role. Commonly used membrane filtration technologies include microfiltration, ultrafiltration, nanofiltration, and reverse osmosis. Different membrane filtration technologies have different processing capabilities and applicable scopes, thereby meeting the special needs of various industrial fields;

[0003] However, the membrane in the membrane filtration equipment is installed vertically inside the equipment, the top of the keel is connected to the equipment, and the bottom of the keel is not fixed. The membrane is supported by the keel. When the keel is longer, the swing amplitude of the bottom of the keel is larger, and the bottom membrane will collide. Long-term collision will cause the membrane to be damaged, reducing the service life of the membrane.

[0004] Therefore, a membrane filtration keel fixing device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a membrane filter keel fixing device in order to solve the above problems, thereby improving the problem that the greater the swing amplitude of the bottom of the keel, the greater the collision of the bottom filter membrane, and the long-term collision causes the filter membrane to be damaged.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a membrane filter keel fixing device, comprising: a filter housing, the inner wall of the filter housing is fixedly connected with a middle partition, the surface of the filter housing is connected with a feed pipe, the upper end of the middle partition is combined with the inner wall of the filter housing to form a water storage tank, and the water storage tank is connected with the feed pipe; a filter fixing mechanism, the filter fixing mechanism is arranged at the lower end of the middle partition; wherein the filter fixing mechanism comprises a central keel fixedly connected to the lower end of the middle partition, the surface of the central keel is provided with two annular grooves, the surface of the central keel is provided with a filter membrane, the surface of the filter membrane is provided with two sealing components, and the lower end of the central keel is provided with a fixing component.

[0007] Preferably, the fixing assembly includes a bottom positioning frame fixedly connected to the inner wall of the filter housing and a connecting block fixedly connected to the lower end of the center keel, the connecting block is slidably connected to a clamping rod inside, the inner wall of the clamping rod is slidably connected to a vertical rod, the vertical rod is fixedly connected to the upper end of the bottom positioning frame, and a spring is sleeved on the surface of the vertical rod, which pushes the clamping rod upward under the action of the spring, and the upper end of the clamping rod enters the interior of the connecting block and is clamped.

[0008] Preferably, the sealing assembly includes two first sealing rings respectively arranged above and below the annular groove, the first sealing rings are arranged outside the filter membrane, a rubber sealing ring is arranged between adjacent first sealing rings, the rubber sealing ring is arranged inside the filter membrane and clamped on the inner wall of the annular groove, two annular grooves are provided on the surface of the rubber sealing ring, and the rubber sealing ring and the first sealing ring will form a preliminary sealing effect on the positioning of the filter membrane.

[0009] Preferably, the rubber sealing ring has two inner cavities, the surface of the rubber sealing ring is connected to a rubber airbag, two annular valves are arranged between the two rubber airbags, and the annular valves are fixedly connected to the inner wall of the rubber sealing ring. The provision of the rubber airbag can assist the second sealing ring in fastening and sealing the filter membrane.

[0010] Preferably, a limiting slot is provided inside the clamping rod, the upper end of the vertical rod is fixedly connected to a limiting block, and the limiting block is slidably connected to the inner wall of the limiting slot, so that the clamping rod is prevented from being separated from the vertical rod by the cooperation of the limiting block and the limiting slot.

[0011] Preferably, the upper end of the spring is fixedly connected to the surface of the clamping rod, and the lower end of the spring is fixedly connected to the bottom positioning frame, and the spring will resist the clamping rod and move upward under the action of elasticity.

[0012] Preferably, a bayonet is provided at the lower end of the connection block, the clamping rod is slidably connected to the inner wall of the bayonet, and the upper end of the clamping rod enters the bayonet to be clamped, thereby positioning the lower end of the central keel.

[0013] Preferably, a second sealing ring is clamped on the inner wall of the annular groove, and the second sealing ring is located outside the filter membrane. The provision of the annular groove reduces the possibility of easy movement of the second sealing ring and can maintain the stability of the seal.

[0014] The beneficial effects of the utility model are:

[0015] 1. The above-mentioned membrane filter keel fixing device can fix the central keel under the action of the fixing component. When in use, the device moves up by means of a spring against the clamping rod, and the clamping rod enters the inside of the bayonet under the guidance of the vertical rod, thereby forming a positioning effect on the lower end of the central keel through the connecting block, avoiding the shaking of the central keel during use, avoiding the collision of the filter membranes with each other, and extending the service life of the filter membrane;

[0016] 2. By setting up a sealing component, the fastening and sealing effect of the filter membrane can be strengthened under the action of the sealing component. When the second sealing ring of the device contracts, the inner cavity is squeezed through the filter membrane to achieve the effect of preliminary positioning of the filter membrane. At the same time, the inner cavity is squeezed to expand the rubber airbag, which will assist in strengthening the positioning of the second sealing ring and enhance the sealing effect of the filter membrane at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the filter housing of the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the filter fixing mechanism of the utility model;

[0020] Figure 4 It is a partial cross-sectional view of the sealing component of the utility model;

[0021] Figure 5 This is an exploded cross-sectional view of the sealing component of the utility model;

[0022] Figure 6 It is a partial exploded cross-sectional view of the fixing component of the utility model.

[0023] In the figure: 1. filter housing; 11. middle partition; 2. feed pipe; 21. water storage tank; 3. filter fixing mechanism; 31. center keel; 311. annular groove; 312. filter membrane; 32. sealing assembly; 321. first sealing ring; 322. rubber sealing ring; 323. inner cavity; 324. rubber airbag; 325. annular valve; 326. second sealing ring; 327. annular groove; 33. fixing assembly; 331. bottom positioning frame; 332. connecting block; 333. bayonet; 334. vertical rod; 335. spring; 336. clamping rod; 337. limit block; 338. limit slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-6As shown, the membrane filter keel fixing device comprises: a filter housing 1, the inner wall of the filter housing 1 is fixedly connected with a middle partition 11, the surface of the filter housing 1 is connected with a feed pipe 2, the upper end of the middle partition 11 is combined with the inner wall of the filter housing 1 to form a water storage tank 21, and the water storage tank 21 is connected with the feed pipe 2; a filter fixing mechanism 3, the filter fixing mechanism 3 is arranged at the lower end of the middle partition 11; wherein the filter fixing mechanism 3 comprises a central keel 31 fixedly connected to the lower end of the middle partition 11, the surface of the central keel 31 is provided with two annular grooves 311, the surface of the central keel 31 is provided with a filter membrane 312, the surface of the filter membrane 312 is provided with two sealing components 32, and the lower end of the central keel 31 is provided with a fixing component 33;

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 6 The fixing assembly 33 includes a bottom positioning frame 331 fixedly connected to the inner wall of the filter housing 1 and a connecting block 332 fixedly connected to the lower end of the central keel 31, a clamping rod 336 is slidably connected to the interior of the connecting block 332, a vertical rod 334 is slidably connected to the inner wall of the clamping rod 336, the vertical rod 334 is fixedly connected to the upper end of the bottom positioning frame 331, a spring 335 is sleeved on the surface of the vertical rod 334, a limiting sliding groove 338 is provided inside the clamping rod 336, the upper end of the vertical rod 334 is fixedly connected to the limiting block 337, the limiting block 337 is slidably connected to the inner wall of the limiting sliding groove 338, the upper end of the spring 335 is fixedly connected to the surface of the clamping rod 336, the lower end of the spring 335 is fixedly connected to the bottom positioning frame 331, a bayonet 333 is provided at the lower end of the connecting block 332, and the clamping rod 336 is slidably connected to the inner wall of the bayonet 333;

[0027] When the locking nut 335 is in the unlocking state, the locking nut 333 is in the unlocking state, and the locking nut 333 is in the unlocking state, so that the locking nut 333 is locked.

[0028] like Figure 1-Figure 5As shown, the sealing assembly 32 includes two first sealing rings 321 respectively arranged above and below the annular groove 311, the first sealing rings 321 are arranged outside the filter membrane 312, a rubber sealing ring 322 is arranged between adjacent first sealing rings 321, the rubber sealing ring 322 is arranged inside the filter membrane 312 and clamped to the inner wall of the annular groove 311, two annular grooves 327 are provided on the surface of the rubber sealing ring 322, two inner cavities 323 are provided inside the rubber sealing ring 322, a rubber airbag 324 is connected to the surface of the rubber sealing ring 322, two annular valves 325 are provided between the two rubber airbags 324, the annular valve 325 is fixedly connected to the inner wall of the rubber sealing ring 322, the inner wall of the annular groove 327 is clamped with a second sealing ring 326, and the second sealing ring 326 is located outside the filter membrane 312;

[0029] When using it again, first put the rubber sealing ring 322 into the annular groove 311 to keep it in a state of being locked and not easily moved. At this time, the filter membrane 312 is placed on the surface of the rubber sealing ring 322 and the central keel 31, and then the two second sealing rings 326 are placed in the annular groove 327. The material of the second sealing ring 326 can be a rubber material with elastic deformation. The specific material is appropriately adjusted according to the actual use environment. When the second sealing ring 326 contracts, it squeezes the inner cavity 323, so that the internal gas of the inner cavity 323 enters the rubber airbag 324. At this time, since the rubber airbag 324 expands inside the filter membrane 312, the squeezing extends to the surface of the second sealing ring 326 to assist in positioning the second sealing ring 326 to prevent the second sealing ring 326 from easily detaching, thereby enhancing the sealing effect and assisting in enhancing the positioning of the filter membrane 312.

[0030] When the utility model is in use, first put the rubber sealing ring 322 into the annular groove 311 to keep it locked, put the filter membrane 312 on the rubber sealing ring 322 and the surface of the central keel 31, put the two second sealing rings 326 into the annular groove 327, the second sealing ring 326 shrinks to squeeze the inner cavity 323, and the internal gas of the inner cavity 323 enters the rubber airbag 324. Since the rubber airbag 324 expands inside the filter membrane 312, the surface of the rubber airbag 324 extends to the outside of the second sealing ring 326, and then the central keel 31 is installed and the clamping rod 336 is manually moved down. The clamping port 333 provided at the lower end of the connecting block 332 is located above the clamping rod 336. Under the action of the spring 335, the clamping rod 336 is pushed up, and the upper end of the clamping rod 336 enters the inside of the clamping port 333 for clamping, thereby forming a positioning effect on the lower end of the central keel 31.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A membrane filtration keel fixing device, characterized in that: include: A filter housing (1), wherein the inner wall of the filter housing (1) is fixedly connected to a middle partition plate (11), the surface of the filter housing (1) is connected to a feed pipe (2), the upper end of the middle partition plate (11) and the inner wall of the filter housing (1) are combined to form a water storage tank (21), and the water storage tank (21) is connected to the feed pipe (2); A filter fixing mechanism (3), wherein the filter fixing mechanism (3) is arranged at the lower end of the middle partition plate (11); The filter fixing mechanism (3) comprises a central keel (31) fixedly connected to the lower end of the middle partition (11), the surface of the central keel (31) is provided with two annular grooves (311), the surface of the central keel (31) is provided with a filter membrane (312), the surface of the filter membrane (312) is provided with two sealing components (32), and the lower end of the central keel (31) is provided with a fixing component (33).

2. The membrane filtration keel fixing device according to claim 1, characterized in that: The fixing assembly (33) comprises a bottom positioning frame (331) fixedly connected to the inner wall of the filter housing (1) and a connecting block (332) fixedly connected to the lower end of the central keel (31); a clamping rod (336) is slidably connected inside the connecting block (332); a vertical rod (334) is slidably connected to the inner wall of the clamping rod (336); the vertical rod (334) is fixedly connected to the upper end of the bottom positioning frame (331); and a spring (335) is sleeved on the surface of the vertical rod (334).

3. The membrane filtration keel fixing device according to claim 1, characterized in that: The sealing assembly (32) comprises two first sealing rings (321) respectively arranged above and below the annular groove (311); the first sealing rings (321) are arranged outside the filter membrane (312); a rubber sealing ring (322) is arranged between adjacent first sealing rings (321); the rubber sealing ring (322) is arranged inside the filter membrane (312) and is clamped to the inner wall of the annular groove (311); and two annular grooves (327) are provided on the surface of the rubber sealing ring (322).

4. The membrane filtration keel fixing device according to claim 3 is characterized in that: The rubber sealing ring (322) has two inner cavities (323) formed therein, the surface of the rubber sealing ring (322) is connected to a rubber airbag (324), two annular valves (325) are arranged between the two rubber airbags (324), and the annular valves (325) are fixedly connected to the inner wall of the rubber sealing ring (322).

5. The membrane filtration keel fixing device according to claim 2, characterized in that: A limiting sliding groove (338) is provided inside the clamping rod (336), and the upper end of the vertical rod (334) is fixedly connected to a limiting block (337), and the limiting block (337) is slidably connected to the inner wall of the limiting sliding groove (338).

6. The membrane filtration keel fixing device according to claim 2, characterized in that: The upper end of the spring (335) is fixedly connected to the surface of the clamping rod (336), and the lower end of the spring (335) is fixedly connected to the bottom positioning frame (331).

7. The membrane filtration keel fixing device according to claim 2, characterized in that: A bayonet (333) is provided at the lower end of the connection block (332), and the clamping rod (336) is slidably connected to the inner wall of the bayonet (333).

8. The membrane filtration keel fixing device according to claim 3 is characterized in that: A second sealing ring (326) is clamped on the inner wall of the annular groove (327), and the second sealing ring (326) is located outside the filter membrane (312).

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