Hydrocyclone separation device for backwashing filter

Abstract

The utility model provides a hydrocyclone separation device for a backwashing filter, and relates to the technical field of liquid filters. The hydrocyclone separation device for the backwashing filter comprises an outer shell, a central cylinder is arranged in the center of the outer shell, an inner spiral groove is formed in the inner wall of the outer shell, and a liquid drainage cavity is formed in the central cylinder. According to the cyclone hydraulic separation device for the reverse cleaning filter, liquid enters the device from the liquid inlet pipe and does high-speed spiral motion in the outer shell, due to the fact that the densities of impurities and liquid in the liquid are different, under the action of centrifugal force, the impurities with the large density are thrown to the inner wall of the outer shell, and the liquid with the small density is gathered in the direction of the center cylinder; the liquid entering the central column body forms different flow rates and pressure distributions in the central column body due to the change of the sizes of the flow dividing holes, so that the residual tiny impurities are separated again, the purity of the purified liquid is further improved, and the device can efficiently separate the impurities with different densities and particle sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hydrocyclone, specifically a kind of hydrocyclone for backwashing filter, belong to liquid filter technical field. BACKGROUND

[0002] In many industrial production processes and sewage treatment fields, it is necessary to filter liquid to remove impurities therein. The traditional filter is easily clogged by impurities after long-term use, affecting the filtering efficiency, and frequent replacement of filter element or complex cleaning operation is required.

[0003] Although the existing backwashing filter can solve the problem of clogging to some extent, the hydrocyclone therein still has some deficiencies, for example, the existing hydrocyclone has unsatisfactory separation effect on impurities of different density and particle size, and the separation efficiency is low, and the separation effect still needs to be improved.

[0004] Therefore, we provide a kind of hydrocyclone for backwashing filter to solve the above problems. INVENTION CONTENTS

[0005] To solve the above problems, the utility model provides a kind of hydrocyclone for backwashing filter to solve the above problems, and the specific technical scheme is:

[0006] A kind of hydrocyclone for backwashing filter, including shell body, the center of the shell body is provided with center column, the inner wall of the shell body is opened with inner spiral groove, the outer surface of the center column is opened with outer spiral groove, the surface of the center column is opened with a plurality of shunt holes, the upper side of the shell body is connected with liquid inlet pipe, the lower side of the shell body is connected with blowdown pipe, the shell body and center column form hydrocyclone separation cavity between, the lower end of the hydrocyclone separation cavity is provided with collection cavity, the center column is opened with liquid discharge cavity in.

[0007] Preferably, the shell body is overall cylindrical, made of high-strength, corrosion-resistant metal material, the material of the center column is the same as the shell body, and the top of the center column is conical.

[0008] Preferably, the groove edges of the inner spiral groove and the outer spiral groove are arc-shaped, and the size of the shunt hole gradually increases from the top to the bottom.

[0009] Preferably, the liquid inlet pipe is connected in the tangential direction of the cross section of the shell body, the liquid inlet pipe is a tapered cone pipe, the end close to the shell body is small, the liquid inlet pipe is connected with a spoiler inside, and the shape of the spoiler is zigzag arc.

[0010] Preferably, a valve is arranged in the blowdown pipe, the blowdown pipe is communicated with the collecting cavity at the side end, the lower end of the shell is provided with an inclined surface, the blowdown pipe is located at the lowest end of the inclined surface, the collecting cavity is located at the lower end of the flow dividing hole, and the lower end of the central column is communicated with the lower part of the backwashing filter.

[0011] Preferably, the upper end of the shell is provided with a sealing cover, a sealing rubber ring is arranged at the connecting position between the sealing cover and the shell, a liquid adding pipe is connected to the sealing cover, and a valve is arranged in the liquid adding pipe.

[0012] Preferably, a protection plate is slidably connected to the sealing cover, the protection plate is located in the shell, the protection plate is arc-shaped and located at the side end of the liquid outlet of the liquid inlet pipe, an installation plate is connected to the upper end of the protection plate, and a connecting hole is formed in the sealing cover and corresponds to the installation plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The liquid cyclone separation device for the backwashing filter is provided with a central column, when the liquid containing impurities enters the device from the liquid inlet pipe, the liquid starts high-speed spiral motion under the action of the inner spiral groove and the outer spiral groove, because the density of the impurities in the liquid is different from the density of the liquid, under the action of the centrifugal force, the impurities with large density are thrown to the inner wall of the shell, and the liquid with small density is gathered to the central column, the impurities with large density are accumulated in the collecting cavity, and the liquid entering the liquid discharge cavity in the central column is formed with different flow velocities and pressure distributions in the central column due to the change of the size of the flow dividing hole, so that the possible small impurities are separated again, and the purity of the purified liquid is further improved.

[0015] 2. The liquid cyclone separation device for the backwashing filter is provided with a protection plate located at the side end of the water outlet of the liquid inlet pipe, so that the liquid discharged from the liquid inlet pipe impacts on the protection plate, direct impact on the inner wall of the shell is avoided, the erosion and abrasion of the inner wall of the shell are greatly reduced, the service life of the shell is prolonged, and the stability of the device in operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a liquid inlet pipe structure schematic view of the utility model;

[0018] Figure 3 It is a central column structure schematic view of the utility model;

[0019] Figure 4The sealed cover structure schematic view of the utility model discloses.

[0020] Figure 5 The section structure schematic view of the utility model discloses.

[0021] BRIEF DESCRIPTION OF DRAWINGS:1, the outer shell body;101, the inner spiral groove;2, the center column body;201, the outer spiral groove;202, the shunt hole;3, the liquid inlet pipe;301, the spoiler;4, the blowdown pipe;5, the liquid-liquid separation chamber;6, the sewage collection chamber;7, the liquid discharge chamber;8, the sealed cover;9, the liquid adding pipe;10, the protective plate;11, the mounting plate. DETAILED DESCRIPTION

[0022] The utility model discloses further illustrate in combination with the drawings.

[0023] Please refer to Figure 1 - Figure 5 Including the outer shell body 1, the center of outer shell body 1 is provided with the center column body 2, and the outer shell body 1 is in whole cylinder, is made of high-strength, corrosion-resistant metal material, and the material of center column body 2 is same with the outer shell body 1, to guarantee the structural strength of device, thereby prolongs the service life of device.

[0024] The top of center column body 2 is conical, can be convenient for the shunt of mixed liquid, and the lower end of center column body 2 is communicated with the lower part of backwash filter, and the liquid that purifies completes will flow into backwash filter through center column body 2, and the inner spiral groove 101 is set up on the inner wall of outer shell body 1, and the outer spiral groove 201 is set up on the outer surface of center column body 2, and the liquid-liquid separation chamber 5 is formed between outer shell body 1 and center column body 2, when the liquid containing impurities enters the liquid-liquid separation chamber 5, under the guidance of inner spiral groove 101, liquid can form stable spiral flow, and the outer spiral groove 201 cooperates with inner spiral groove 101, can further guide the spiral flow of liquid, and the groove edge of inner spiral groove 101 and outer spiral groove 201 is arc, to reduce the abrasion caused by water flow scouring.

[0025] The surface of center column body 2 is provided with a plurality of shunt holes 202, and the size of shunt hole 202 gradually increases from top to bottom, when mixed liquid rotates, part liquid will enter center column body 2 through shunt hole 202, and the liquid entering the inside of center column body 2 can adjust the pressure and flow rate distribution of liquid-liquid in center column body 2 due to the change of shunt hole 202 size, improve separation effect.

[0026] The upper side of the outer shell 1 is connected with a liquid inlet pipe 3, the liquid inlet pipe 3 is connected in the tangential direction of the cross section of the outer shell 1, so that the mixed liquid enters the outer shell 1 in the tangential direction, thereby the mixed liquid can generate a spiral flow in the outer shell 1, the liquid inlet pipe 3 is a tapered cone pipe, the end of the liquid inlet pipe 3 close to the outer shell 1 is small, the design can accelerate the mixed liquid and improve the initial kinetic energy of the mixed liquid, the liquid inlet pipe 3 is connected with a spoiler 301, the spoiler 301 is in the shape of a zigzag arc, the spoiler 301 can preliminarily disturb the liquid, so that the impurities in the liquid are dispersed before entering the liquid-solid separation cavity 5, thereby facilitating the subsequent liquid-solid separation.

[0027] The lower side of the outer shell 1 is connected with a sewage pipe 4, the lower end of the liquid-solid separation cavity 5 is provided with a sewage collecting cavity 6, the sewage pipe 4 is provided with a valve, the sewage pipe 4 is communicated with the sewage collecting cavity 6, the lower end of the outer shell 1 is provided with an inclined surface, the sewage pipe 4 is located at the lowest end of the inclined surface, so that the impurities in the sewage collecting cavity 6 can be completely discharged from the sewage pipe 4, the sewage collecting cavity 6 is located below the flow distribution hole 202, and the central column 2 is provided with a liquid discharging cavity 7.

[0028] The upper end of the outer shell 1 is provided with a sealing cover 8, the connection between the sealing cover 8 and the outer shell 1 is provided with a sealing rubber ring, the sealing cover 8 is connected with a liquid adding pipe 9, the liquid adding pipe 9 is provided with a valve, in order to facilitate the separation of impurities in the mixed liquid, flocculation liquid can be added into the outer shell 1 through the liquid adding pipe 9, so that the suspended particles in the water can be gathered and become large to form a flocculation, the sealing cover 8 is slidably connected with a protection plate 10, the protection plate 10 is located in the outer shell 1, the protection plate 10 is in the shape of an arc and is located at the outlet side of the liquid inlet pipe 3, the upper end of the protection plate 10 is connected with a mounting plate 11, the mounting plate 11 is provided with a connecting hole corresponding to the sealing cover 8, and the protection plate 10 can be fixed on the sealing cover 8 through the mounting plate 11.

[0029] In use, when the mixed liquid containing impurities enters the outer shell 1 from the liquid inlet pipe 3, the mixed liquid is accelerated in the liquid inlet pipe 3, and then starts high-speed spiral motion under the action of the inner spiral groove 101 of the outer shell 1 and the outer spiral groove 201 of the central column 2, due to the different densities of the impurities and the liquid in the mixed liquid, under the action of the centrifugal force, the impurities with large density are thrown to the inner wall of the outer shell 1, and the liquid with small density is gathered to the central column 2.

[0030] During the liquid-solid motion, part of the liquid enters the liquid discharging cavity 7 in the central column 2 through the flow distribution hole 202 on the surface of the central column 2, and the liquid entering the liquid discharging cavity 7 is subjected to different flow rates and pressure distributions in the central column 2 due to the change of the size of the flow distribution hole 202, so that the possible residual small impurities are separated again, and the purity of the purified liquid is further improved.

[0031] The purified liquid after the hydrocyclone separation flows into the backwashing filter through the liquid outlet chamber 7 for further filtration. If the backwashing filter is blocked during operation, backwashing operation can be performed. During backwashing, the backwashing water flows upward to clean the filter core, and the impurity-containing water after cleaning flows back to the hydrocyclone separation chamber 5 for hydrocyclone separation again, so that the hydrocyclone separation device and the backwashing filter realize cyclic and cooperative work.

[0032] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these embodiments will all fall within the protection scope of the claims of the present application.

Claims

1. A hydrocyclone device for use in a backwash filter comprising an outer housing (1) characterised in that: The center of the outer shell (1) is provided with a center column (2), the inner wall of the outer shell (1) is provided with an inner spiral groove (101), the outer surface of the center column (2) is provided with an outer spiral groove (201), the surface of the center column (2) is provided with a plurality of shunt holes (202), the upper side of the outer shell (1) is connected with a liquid inlet pipe (3), the lower side of the outer shell (1) is connected with a sewage pipe (4), the outer shell (1) and the center column (2) form a liquid cyclone separation cavity (5), the lower end of the liquid cyclone separation cavity (5) is provided with a sewage collection cavity (6), and the center column (2) is provided with a liquid discharge cavity (7) in the inside.

2. A hydrocyclone device for use in a backwash filter according to claim 1, characterized in that: The outer shell (1) is cylindrical as a whole and is made of high-strength and corrosion-resistant metal material, the material of the center column (2) is the same as that of the outer shell (1), and the top of the center column (2) is conical.

3. A hydrocyclone device for use in a backwash filter according to claim 1, characterized in that: The groove edges of the inner spiral groove (101) and the outer spiral groove (201) are circularly arc-shaped, and the size of the shunt hole (202) gradually increases from the top to the bottom.

4. A hydrocyclone device for use in a backwash filter according to claim 1, characterized in that: The liquid inlet pipe (3) is connected in the tangential direction of the cross section of the outer shell (1), the liquid inlet pipe (3) is a tapered cone pipe, the end close to the outer shell (1) is small, the liquid inlet pipe (3) is connected with a spoiler (301) in the inside, and the spoiler (301) is in the shape of a zigzag arc.

5. A hydrocyclone device for use in a backwash filter according to claim 1, characterized in that: The sewage pipe (4) is provided with a valve, the side end of the sewage pipe (4) is communicated with the sewage collection cavity (6), the lower end of the outer shell (1) is provided with an inclined surface, the sewage pipe (4) is located at the lowest end of the inclined surface, the sewage collection cavity (6) is located at the lower end of the shunt hole (202), and the lower end of the center column (2) is communicated with the lower part of the backwashing filter.

6. A hydrocyclone device for use in a backwash filter according to claim 1, characterized in that: The upper end of the outer shell (1) is provided with a sealing cover (8), the connecting part between the sealing cover (8) and the outer shell (1) is provided with a sealing rubber ring, the sealing cover (8) is connected with a liquid adding pipe (9) in the inside, and the liquid adding pipe (9) is provided with a valve.

7. A hydrocyclone device for use in a backwash filter according to claim 6, characterized in that: The sealing cover (8) is slidably connected with a protection plate (10), the protection plate (10) is located in the outer shell (1), the protection plate (10) is in the shape of an arc and is located at the liquid outlet side end of the liquid inlet pipe (3), the upper end of the protection plate (10) is connected with a mounting plate (11), and the mounting plate (11) is provided with a connecting hole corresponding to the sealing cover (8) in the inside.

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