CN215195753U - Cross-flow rotary filtering device - Google Patents

Abstract

A cross-flow rotary filtering device relates to the technical field of filtering machines, and adopts the technical scheme that the device comprises a support and a filtering machine, wherein the filtering machine comprises a shell, a central shaft, a filtering structure, a liquid inlet structure, a filtrate outlet pipe and an emptying pipe; and the emptying pipe is connected with a return pipe. The utility model greatly reduces the deposition of impurities on the surface of the filter sheet, so that the filtering efficiency of the filter sheet is always maintained at a higher level, the cleaning frequency of the filter is reduced, and the production efficiency is also improved; a return pipe is added to flexibly adjust the working pressure in the shell.

Description

Cross-flow rotary filtering device

Technical Field

The utility model relates to a filter technical field especially relates to a cross-flow rotary filter device.

Background

In the filtration of wine stock solution, a sheet filter is commonly used as filtration equipment at present. However, the conventional sheet filter is static filtration, and impurities with the particle size larger than the filter holes in the stock solution can be deposited on the top surface of the filter sheet to form a secondary filter layer, so that the filtration efficiency of the filter sheet is reduced. Along with the continuous accumulation of the secondary filtering layer, the filtering efficiency is slower and slower until the secondary filtering layer is completely stopped, so that the operation is frequently suspended to clean the filtering machine, and the production efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

Need frequent abluent problem to static filtration among the prior art scheme, the utility model provides a cross-flow rotary filter device.

The utility model provides a following technical scheme: a cross-flow rotary filtering device comprises a support and a filter, wherein the filter comprises a shell, a central shaft, a filtering structure, a liquid inlet structure and a filtrate outlet pipe; a filtrate buffer cavity is formed in the bottom of the shell and is in rotary connection with the central shaft, one end, far away from the filtrate buffer cavity, of the central shaft is in transmission connection with a power device, a connecting pipe is arranged at the other end of the central shaft, and the connecting pipe is in rotary connection with the shell; the filtrate outlet pipe is connected to the filtrate buffer cavity; the filter structure is arranged in the shell and comprises a filter central pipe with one closed end and a plurality of filter sheets sequentially arranged on the filter central pipe along the axial direction of the filter central pipe, one end of the connecting pipe is connected with the unclosed end of the filter central pipe, and the other end of the connecting pipe is provided with a liquid outlet hole; the feed liquor structure includes the inlet and connects on the inlet to the inside injection pipe that extends of casing, the injection pipe port seals and is in the orientation one side of cassette is followed the axial direction of feed liquor pipe has set gradually a plurality of injection ports.

Preferably, the bottom of the shell is also provided with an emptying pipe, the emptying pipe is connected with a return pipe, and the return pipe and the emptying pipe are both provided with valves.

Preferably, the filtrate outlet pipe is connected with a backwashing pipe, and the backwashing pipe is connected with a backwashing pump; the liquid inlet is connected with a liquid inlet pipe, and the liquid inlet pipe is connected with a booster pump; all be provided with the valve on filtrating drain pipe, backwash pipe and the feed liquor pipe.

Preferably, the filter plate is provided with an assembly opening, a plurality of filtrate cavities which are uniformly distributed are arranged in the filter plate, and a liquid outlet communicated with the filtrate cavities is formed in the side wall of the assembly opening; the filter sheets are sequentially sleeved on the filter central pipe through the assembling ports, and two sides of each filter sheet are provided with sealing rings; a plurality of milling grooves extending along the axial direction of the filtering central tube are formed in the outer wall of the filtering central tube, and a plurality of through holes are formed in the milling grooves; the connecting pipe is towards the one end of filtering the center tube still is provided with the supporting disk, filtering the confined one end of center tube and being provided with solid axle, be provided with locking device on the solid axle.

Preferably, the locking device comprises a locking cushion block and a locking nut with one closed end, the locking cushion block is in sliding connection with the filtering central pipe, the locking nut is in threaded connection with the filtering central pipe, the sealing ring is arranged between the locking nut and the locking cushion block, and the sealing ring is in clearance fit with the filtering central pipe.

Preferably, the housing comprises a base and an end cover, wherein the base and the end cover are respectively provided with a shoulder ring extending outwards, and a clamp is detachably connected outside the two shoulder rings; the base is connected with the connecting pipe in a rotating mode.

Preferably, a pressure gauge is arranged on the top of the end cover.

The utility model has the advantages that: 1. the power device is adopted to drive the central shaft and the filtering structure to rotate continuously, and meanwhile, the injection orifice of the liquid inlet pipe enables the stock solution to form a cross flow scouring effect on the surface of the filter sheet when entering the filter, so that the deposition of impurities on the surface of the filter sheet is greatly reduced, the filtering efficiency of the filter sheet is always maintained at a higher level, the cleaning frequency of the filter is reduced, and the production efficiency is also improved; 2. a return pipe is added to flexibly adjust the working pressure in the shell.

Drawings

Fig. 1 is a three-dimensional schematic diagram of an embodiment of the present invention.

Fig. 2 is a side view i of an embodiment of the present invention.

Fig. 3 is a side view ii of an embodiment of the present invention.

Fig. 4 is a cross-sectional view of an embodiment of the present invention.

Fig. 5 is a schematic view of an embodiment of the central filter tube of the present invention.

Fig. 6 is an enlarged view of a portion a of fig. 4.

Fig. 7 is a cross-sectional view of an embodiment of a filter according to the present invention.

Reference numerals: 1-shell, 11-filtrate buffer chamber, 12-base, 13-end cap, 14-shoulder ring, 15-clamp, 16-pressure gauge, 2-central shaft, 21-connecting pipe, 211-liquid outlet hole, 212-supporting disk, 22-rotary sealing element, 3-filtering structure, 31-filtering central pipe, 311-milling groove, 312-through hole, 313-solid shaft, 32-filtering sheet, 321-assembly port, 322-filtrate chamber, 323-liquid outlet, 33-sealing ring, 4-liquid inlet structure, 41-liquid inlet, 42-injection pipe, 43-injection port, 44-liquid inlet pipe, 45-booster pump, 5-filtrate outlet pipe, 51-backwash pipe, 52-backwash pump, 6-evacuation pipe, 61-a return pipe, 7-a power device, 8-a locking device, 81-a locking cushion block and 82-a locking nut.

Detailed Description

The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a cross-flow rotary filtering device as shown in figures 1-7, which comprises a bracket and a filter, wherein the filter comprises a shell 1, a central shaft 2, a filtering structure 3, a liquid inlet structure 4, a filtrate outlet pipe 5 and an emptying pipe 6; a filtrate buffer cavity 11 is formed in the bottom of the shell 1, the filtrate buffer cavity 11 is rotatably connected with the central shaft 2, one end, far away from the filtrate buffer cavity 11, of the central shaft 2 is in transmission connection with a power device 7, the other end of the central shaft is provided with a connecting pipe 21, and the connecting pipe 21 is rotatably connected with the shell 1; the filtrate outlet pipe 5 is connected to the filtrate buffer cavity 11; the filter structure 3 is arranged inside the housing 1 and comprises a filter central tube 31 with one closed end and a plurality of filter sheets 32 sequentially arranged on the filter central tube 31 along the axial direction of the filter central tube 31, one end of the connecting tube 21 is connected with the unclosed end of the filter central tube 31, and the other end of the connecting tube is provided with a liquid outlet hole 211; liquid inlet structure 4 includes inlet 41 and connects on the inlet 41 to the inside injection pipe 42 that extends of casing 1, the injection pipe 42 port is sealed and is being faced one side of cassette 32 is followed the axial direction of inlet pipe has set gradually a plurality of injection ports 43.

The support provides the support for the filter, and the filter includes casing, filtration, filtrating buffer chamber, center pin, connecting pipe, power device, inlet structure, filtrating drain pipe. The filtering structure is arranged in the shell and comprises a filtering central pipe and a filter disc, and the filtering central pipe can be made of stainless steel and extends in the vertical direction; the filter sheets are sequentially and fixedly arranged on the filtering central pipe along the axial direction of the filtering central pipe, the filter sheets can adopt the existing ultra-high molecular weight polyethylene as a raw material, and are shaped by a mould and then sintered into a hollow sheet or disc at high temperature, so that the filtering effect is achieved; one end of the filtering central tube is closed, and the other end of the filtering central tube is connected with the connecting tube and communicated with the filtrate buffer cavity; the filtrate obtained by the filter disc enters the interior of the filter central tube, enters the filtrate buffer cavity through the connecting tube and then flows out of the filtrate outlet tube.

The central shaft, the connecting pipe and the power device are used for driving the filtering structure to rotate, so that the filtering sheet and the stock solution keep relative motion, and the filtering process is in a dynamic state, so that the deposition amount of impurities on the surface of the filtering sheet is reduced. As shown in fig. 4, in one embodiment, the central filter tube of the filter structure may be fixedly mounted on the connecting tube by means of bolting or welding, and the connecting tube is rotatably connected with the housing; in order to lead out the filtrate from the rotating connecting pipe conveniently, a filtrate buffer cavity is arranged at the bottom of the shell and outside the connecting pipe, and a liquid outlet hole is formed in one end, positioned in the filtrate buffer cavity, of the connecting pipe; the bottom of the connecting pipe is fixedly connected with the central shaft, the central shaft is rotatably connected with the filtrate buffer cavity, and specifically, the connecting pipe can be welded with the central shaft or integrally formed; the bottom of the central shaft is in transmission connection with a power device, and the power device provides kinetic energy for rotation, so that the filtering structure is driven to rotate. Further, the rotary joints of the central shaft and the filtrate buffer chamber and the rotary joints of the connecting pipe and the casing may be provided with rotary sealing members 22 for improving sealing performance, and the rotary sealing members 22 may be mechanical seals. The shell, the filtrate buffer cavity, the central shaft and the connecting pipe can be made of stainless steel, the filtrate outlet pipe can be made of a seamless steel pipe, and the power device can be made of a motor.

The liquid inlet structure comprises a liquid inlet and an injection pipe. The liquid inlet is arranged outside the shell and is used for being connected with a liquid inlet pipe 44 for conveying liquor stock solution. The injection pipe can be positioned at the edge of the bottom surface of the shell and extends towards the interior of the shell, the extending direction of the injection pipe can be parallel to the axial direction of the filtering central pipe, and the tail end of the injection pipe, which is far away from the liquid inlet, is closed; the side of the injection pipe facing the filter sheet is sequentially provided with a plurality of injection ports along the axial direction. The filter sheet is in a sheet shape or a disc shape, the action direction of the filtering pressure of the filter sheet is mostly vertical to the bottom surface or the top surface of the filter sheet, the stock solution enters the liquid inlet and the injection pipe after being pressurized, the stock solution is sprayed out of the filter sheet from the injection port, the flow direction is staggered with the filtering pressure direction on the filter sheet to form cross flow, the cross flow scouring effect is formed on the filter sheet, the deposition amount of impurities on the filter sheet is further reduced, and the influence of excessive impurity deposition on the filtering efficiency of the filter sheet is avoided. Specifically, the position of the ejection opening may be slightly higher than the top surface of the filter sheet. The liquid inlet and the injection pipe can be made of stainless steel.

Preferably, the bottom of the housing 1 is further provided with an emptying pipe 6, the emptying pipe 6 is connected with a return pipe 61, and the return pipe 61 and the emptying pipe 6 are both provided with valves.

Besides the filtrate outlet pipe, the bottom of the shell is also provided with an emptying pipe for discharging liquor stock solution or impurities. The emptying pipe is connected with a return pipe, both of which are provided with valves, the return pipe is used for returning the wine liquid stock solution and adjusting the internal pressure during filtering. During filtering, the emptying pipe and the return pipe can be closed through a valve, and the return pipe is opened to release pressure when the pressure in the shell is overlarge; when the filtration is suspended and the interior of the shell is cleaned, the return pipe is closed, the emptying pipe is opened, and impurities mixed and deposited with the wine liquor stock solution flow out of the emptying pipe. The emptying pipe and the return pipe can adopt seamless steel pipes, and the valve can adopt an electromagnetic valve. Furthermore, the return pipe can be provided with a regulating valve for flexibly regulating the pressure.

Preferably, a backwashing pipe 51 is connected to the filtrate outlet pipe 5, and a backwashing pump 52 is connected to the backwashing pipe 51; the liquid inlet 41 is connected with a liquid inlet pipe 44, and the liquid inlet pipe 44 is connected with a booster pump 45; and valves are arranged on the filtrate outlet pipe 5, the backwashing pipe 51 and the liquid inlet pipe 44.

The backwashing pipe is used for backwashing the components such as the filter sheet, and during backwashing, only the valves on the backwashing pipe and the emptying pipe are opened, and the backwashing pump reversely presses cleaning water into the filtering structure to scour the filter sheet and finally flows out of the emptying pipe. The booster pump is used for boosting the pressure of the wine liquid stock solution and increasing the impact force when the wine liquid stock solution is sprayed out of the spray opening. The valve can adopt a solenoid valve.

Preferably, the filter sheet 32 is provided with an assembly port 321, a plurality of filtrate cavities 322 which are uniformly distributed are arranged in the filter sheet, and a liquid outlet 323 which is communicated with the filtrate cavities 322 is arranged on the side wall of the assembly port 321; the filter sheets 32 are sequentially sleeved on the central filter pipe 31 through the assembling ports 321, and two sides of each filter sheet 32 are provided with a sealing ring 33; a plurality of milling grooves 311 extending along the axial direction of the filter center tube 31 are formed in the outer wall of the filter center tube, and a plurality of through holes 312 are formed in the milling grooves 311; the end of the connecting pipe 21 facing the filtering central pipe 31 is further provided with a supporting plate 212, the closed end of the filtering central pipe 31 is provided with a solid shaft 313, and the solid shaft 313 is provided with a locking device 8.

As shown in fig. 5, 6 and 7, in one embodiment, the outer wall of the filter center tube is provided with a plurality of milled grooves, the milled grooves may extend in the axial direction of the filter center tube, and the milled grooves are provided with a plurality of through holes. The filter disc can be round, the interior of the filter disc is hollow, the filter disc is provided with a plurality of filtrate cavities, the center of the filter disc is provided with an assembly port, the assembly port can be round and is sleeved on the central filter pipe, and the assembly port is provided with a liquid outlet communicated with the filtrate cavities; the number and the position of the milling grooves correspond to the liquid outlets, and the liquid outlets are required to be aligned with the milling grooves during assembly. The filter disc plays a role in filtering, and the obtained filtrate is collected in the filtrate cavity and flows into the interior of the filtering central tube through the liquid outlet, the milling groove and the through hole.

In order to ensure sealing, stock solution and filtrate are isolated, sealing rings are arranged on two sides of each filter sheet and can be sleeved on the filtering central pipe, so that the permeation distance of the liquid is increased, and the sealing effect is achieved. Be provided with the supporting disk on the connecting pipe of filtering center tube bottom, filter the center tube top and be provided with solid axle and locking device, locking device compresses tightly the cassette and sealing washer on the supporting disk to reach good sealed effect. The sealing ring can be a silica gel sealing gasket.

Preferably, the locking device 8 comprises a locking cushion block 81 and a locking nut 82 with one closed end, the locking cushion block 81 is connected with the central filter tube 31 in a sliding manner, the locking nut 82 is connected with the central filter tube 31 in a threaded manner, the sealing ring 33 is arranged between the locking nut 82 and the locking cushion block 81, and the sealing ring 33 is in clearance fit with the central filter tube 31.

In one embodiment, the locking device includes a locking spacer and a locking nut, as shown in fig. 6. The locking cushion block is connected with the filtering central pipe in a sliding way; the top end of the locking nut is closed and is in threaded connection with the solid shaft, and a sealing ring is arranged between the locking nut and the solid shaft to play a role in sealing. The locking nut compresses the locking cushion block, the filter sheet and the sealing ring in a threaded connection mode, and the locking cushion block plays a role in transferring pressure. The locking nut and the locking cushion block can be made of stainless steel.

Preferably, the housing 1 comprises a base 12 and an end cover 13, wherein the base 12 and the end cover 13 are respectively provided with an outward extending shoulder ring 14, and a clamp 15 is detachably connected to the two shoulder rings 14; the base 12 is rotatably connected to the connection pipe 21.

For facilitating the installation and maintenance of the filter structure, the housing comprises a base and an end cover, which are connected by a shoulder ring and a clamp. A seal may also be provided between the two shoulder rings to enhance the seal. The base is installed on the support, and rotates with the connecting pipe and be connected, and filtrating buffer chamber also sets up in the base bottom.

Preferably, a pressure gauge 16 is arranged on the top of the end cover 13 and used for detecting the working pressure inside the shell in real time and providing a basis for pressure adjustment.

The foregoing is directed to one or more embodiments of the present invention, which are described in some detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. The cross-flow rotary filtering device comprises a support and a filtering machine, and is characterized in that: the filter comprises a shell (1), a central shaft (2), a filtering structure (3), a liquid inlet structure (4) and a filtrate outlet pipe (5);

a filtrate buffer cavity (11) is formed in the bottom of the shell (1), the filtrate buffer cavity (11) is rotatably connected with the central shaft (2), one end, far away from the filtrate buffer cavity (11), of the central shaft (2) is in transmission connection with a power device (7), a connecting pipe (21) is arranged at the other end of the central shaft, and the connecting pipe (21) is rotatably connected with the shell (1); the filtrate outlet pipe (5) is connected to the filtrate buffer cavity (11);

the filter structure (3) is arranged in the shell (1) and comprises a filter central pipe (31) with one closed end and a plurality of filter sheets (32) which are sequentially arranged on the filter central pipe (31) along the axial direction of the filter central pipe (31), one end of the connecting pipe (21) is connected with the unclosed end (31) of the filter central pipe, and the other end of the connecting pipe is provided with a liquid outlet hole (211);

liquid inlet structure (4) include inlet (41) and connect on inlet (41) to inside injection pipe (42) that extend of casing (1), injection pipe (42) port is sealed and is being faced one side of cassette (32) is followed the axial direction of inlet pipe has set gradually a plurality of injection ports (43).

2. A cross-flow rotary filtration device according to claim 1 wherein: the bottom of the shell (1) is further provided with an emptying pipe (6), the emptying pipe (6) is connected with a return pipe (61), and valves are arranged on the return pipe (61) and the emptying pipe (6).

3. A cross-flow rotary filtration device according to claim 2 wherein: a backwashing pipe (51) is connected to the filtrate outlet pipe (5), and the backwashing pipe (51) is connected to a backwashing pump (52); the liquid inlet (41) is connected with a liquid inlet pipe (44), and the liquid inlet pipe (44) is connected with a booster pump (45); and valves are arranged on the filtrate outlet pipe (5), the backwashing pipe (51) and the liquid inlet pipe (44).

4. A cross-flow rotary filtration device according to claim 1 wherein: the filter sheet (32) is provided with an assembly opening (321), a plurality of filtrate cavities (322) which are uniformly distributed are arranged in the filter sheet, and the side wall of the assembly opening (321) is provided with a liquid outlet (323) communicated with the filtrate cavities (322); the filter sheets (32) are sequentially sleeved on the filter central pipe (31) through the assembling ports (321), and two sides of each filter sheet (32) are provided with sealing rings (33);

a plurality of milling grooves (311) extending along the axial direction of the filtering central tube are formed in the outer wall of the filtering central tube (31), and a plurality of through holes (312) are formed in the milling grooves (311);

the connecting pipe (21) faces one end of the filtering central pipe (31) and is further provided with a supporting plate (212), a solid shaft (313) is arranged at the closed end of the filtering central pipe (31), and a locking device (8) is arranged on the solid shaft (313).

5. A cross-flow rotary filtration device according to claim 4 wherein: locking device (8) are including locking cushion (81) and one end confined lock nut (82), locking cushion (81) and filtration center tube (31) sliding connection, lock nut (82) and filtration center tube (31) threaded connection, be provided with between lock nut (82) and the locking cushion (81) sealing washer (33), sealing washer (33) and filtration center tube (31) clearance fit.

6. A cross-flow rotary filtration device according to claim 1 wherein: the shell (1) comprises a base (12) and end covers (13), wherein the base (12) and the end covers (13) are respectively provided with outward extending shoulder rings (14), and the two shoulder rings (14) are detachably connected with a clamp (15); the base (12) is rotatably connected with the connecting pipe (21).

7. A cross-flow rotary filtration device according to claim 6 wherein: and a pressure gauge (16) is arranged at the top of the end cover (13).

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