Sewage treatment device and sewage treatment process

Abstract

The application discloses sewage treatment device and sewage treatment process, wherein, the sewage treatment device comprises: a separation cylinder, an accelerating coil assembly and a spiral magnetic isolation layer, the separation cylinder is used for separating magnetic substances, non-magnetic substances and water in sewage, the accelerating coil assembly is separated into a magnetic part and a non-magnetic part under the isolation of the spiral magnetic isolation layer, the magnetic part can exert magnetic attraction on the magnetic substances in the separation cylinder, the non-magnetic part cannot exert magnetic attraction on the magnetic substances in the separation cylinder or the magnetic attraction is extremely small and is insufficient to affect the magnetic attraction of the magnetic part, the magnetic attraction of the magnetic part drives the magnetic substances to rotate spirally, and the magnetic substances rotating spirally will drive the water flow to rotate spirally, so that the water in the sewage is separated from the non-magnetic substances. The sewage treatment device in the embodiment can efficiently separate the non-magnetic substances, the magnetic substances and the water flow, and improve the separation efficiency, and the application is applied to the field of sewage treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment, in particular to a sewage treatment device and a sewage treatment process. BACKGROUND

[0002] Sewage treatment refers to a process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. Common methods include physical, biological and chemical methods. The physical method includes gravity separation, centrifugal separation, reverse osmosis, air flotation, etc. The physical method is used for low pollution and strong self-purification ability, and is often used for primary treatment of sewage to remove solid pollutants in sewage.

[0003] In related technologies, after the solid pollutants are separated, the metals with high value in the solid pollutants need to be recycled and utilized, and the metals in the solid pollutants often need to be treated again, which requires the cooperation of multiple devices and has a long processing period and low processing efficiency. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a sewage treatment device capable of improving processing efficiency.

[0005] A sewage treatment process with the above sewage treatment device is also provided.

[0006] The sewage treatment device according to the first aspect of the present application comprises:

[0007] A separation cylinder is provided with an inlet, a first outlet higher than the inlet, and a second outlet higher than the first outlet;

[0008] An acceleration coil assembly is sleeved outside the separation cylinder for accelerating the magnetic substances in the separation cylinder in the upward direction along the axis from the inlet to the second outlet;

[0009] A spiral magnetic isolation layer is provided between the acceleration coil assembly and the separation cylinder and divides the acceleration coil assembly into a magnetic part and a magnetic isolation part, and the magnetic part is distributed in a spiral line around the separation cylinder;

[0010] The acceleration coil assembly is configured to accelerate the magnetic substances in the sewage along the spiral line by the magnetic part, the sewage overflows from the first outlet, and the magnetic substances escape from the second outlet by passing the first outlet.

[0011] According to the sewage treatment device provided by the embodiment of the first aspect of the present application, the sewage enters the separation cylinder through the inlet, the acceleration coil assembly forms a spiral magnetic part through the spiral magnetic isolation layer, the spiral magnetic part forms a spiral magnetic attraction line on the side wall of the separation cylinder, the magnetic material in the sewage performs spiral ascending motion under the driving of the magnetic attraction, and the water flow performs spiral motion, so that the water and the non-magnetic solid pollutants in the sewage are separated, the separation of multiple substances is realized, the water flow overflows from the first outlet after being filled in the separation cylinder, and the magnetic material rotates out of the second outlet along the spiral magnetic attraction line, so that the magnetic material, the water and the non-magnetic material can be directly separated, and the separation efficiency is higher.

[0012] According to some embodiments of the present application, the acceleration coil assembly comprises a plurality of acceleration coils, which are sequentially and spaced apart in the upward direction of the axis, and sequentially are a first acceleration coil, a second acceleration coil,..., and an Nth acceleration coil, the part of the first acceleration coil which is not isolated by the spiral magnetic isolation layer forms a first spiral segment, the part of the Nth acceleration coil which is not isolated by the spiral magnetic isolation layer forms an Nth spiral segment, and the connecting line of the first spiral segment to the Nth spiral segment forms a complete spiral line.

[0013] The acceleration coil assembly is configured to sequentially energize the first acceleration coil, the second acceleration coil,..., and the Nth acceleration coil, and to de-energize or reduce the current of the next acceleration coil after the next acceleration coil is energized, so as to spiral accelerate the magnetic material in the upward direction of the axis.

[0014] According to some embodiments of the present application, the number of turns of the acceleration coil assembly increases in the upward direction of the axis.

[0015] According to some embodiments of the present application, the separation cylinder comprises an outer cylinder and an inner cylinder arranged in the outer cylinder, a drainage cavity is arranged in the inner cylinder, a separation cavity is formed between the inner cylinder and the outer cylinder, the top of the inner cylinder forms the first outlet, and the first outlet communicates the separation cavity and the drainage cavity.

[0016] According to some embodiments of the present application, the separation cylinder further comprises a rotating cylinder rotatably arranged outside the inner cylinder.

[0017] According to some embodiments of the present application, the second outlet is tangent to the side wall of the separation cylinder, and the second outlet is located at the end of the magnetic part in the upward direction of the axis.

[0018] According to some embodiments of the present application, the separation cylinder further comprises a third outlet lower than the inlet, and the third outlet is used for precipitating and discharging non-magnetic material.

[0019] According to some embodiments of the present application, the inlet is tangent to the sidewall of the separation cylinder and is used to form a spiral water flow.

[0020] According to some embodiments of the present application, the inlet is directed towards the magnetic isolation portion.

[0021] The sewage treatment process according to the second aspect of the present application comprises the sewage treatment device according to the first aspect of the present application, and the specific steps include:

[0022] S1: the accelerating coil assembly is powered, and the magnetic isolation portion forms a spiral magnetic field;

[0023] S2: the inlet is connected to a water flow with a preset initial speed, and the magnetic substance in the water flow spirally rotates along the magnetic isolation portion and drives the water flow to spirally rotate;

[0024] S3: the water flow rotation forms a top clear water layer, and the clear water layer overflows from the first outlet; and the magnetic substance spirally rotates to the second outlet and escapes.

[0025] The sewage treatment process according to the second aspect of the present application has at least the following beneficial effects: the spiral magnetic field drives the magnetic substance to spirally move, and in turn drives the water flow to spirally rotate, so that the non-magnetic substance in the sewage is settled under the action of centrifugal force, and the magnetic substance moves along the spiral to the second outlet and is discharged, realizing the separation of the magnetic substance, the non-magnetic substance and water, and improving the separation efficiency.

[0026] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0028] Figure 1 FIG. 1 is a structural schematic diagram of a sewage treatment device according to an embodiment of the present application;

[0029] Figure 2 FIG. 2 is a structural schematic diagram of the sewage treatment device according to the embodiment of the present application from another perspective;

[0030] Figure 3 FIG. 3 is a front view schematic diagram of the sewage treatment device according to the embodiment of the present application;

[0031] Figure 4 FIG. 4 is a first front view cross-sectional schematic diagram of the sewage treatment device according to the embodiment of the present application;

[0032] Figure 5Fig. 2 is a second front cross-sectional view of the sewage treatment device according to an embodiment of the present application;

[0033] Figure 6 Fig. 3 is a structural view of the sewage treatment device according to an embodiment of the present application after removing the accelerating coil assembly;

[0034] Figure 7 Fig. 4 is a cross-sectional view of the sewage treatment device according to an embodiment of the present application after removing the accelerating coil assembly.

[0035] Reference numerals:

[0036] separating cylinder 100; inlet 110; water inlet pipe 111; first outlet 120; second outlet 130; first pipe 131; separating chamber 140; water outlet chamber 150; outer cylinder 160; inner cylinder 170; rotating cylinder 180; third outlet 190; second pipe 191;

[0037] accelerating coil assembly 200;

[0038] spiral magnetic isolation layer 300. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example embodiments in which like numerals indicate like elements or elements having the same or similar function throughout the several views. The embodiments described below are examples only and are not to be construed as limiting the present application.

[0040] In the description of the present application, if the orientation description, such as up, down, etc. is involved, the orientation or position relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In the description of the present application, several means one or more, and multiple means two or more. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0042] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0043] Reference Figures 1 to 7As shown, the first aspect of the present application provides a sewage treatment device, comprising: a separation cylinder 100, an acceleration coil assembly 200 and a spiral magnetic isolation layer 300, the separation cylinder 100 is used for separating magnetic substances, non-magnetic substances and water in sewage, the acceleration coil assembly 200 is separated into a magnetic part and a non-magnetic part under the isolation of the spiral isolation layer, the magnetic part can exert a magnetic attraction force on the magnetic substances in the separation cylinder 100, the non-magnetic part cannot exert a magnetic attraction force on the magnetic substances in the separation cylinder 100, or the magnetic attraction force is extremely small and insufficient to affect the magnetic attraction force of the magnetic part, the magnetic attraction force of the magnetic part drives the magnetic substances to rotate spirally, and the water flow is driven to rotate spirally when the magnetic substances rotate spirally, so that the water in the sewage is separated from the non-magnetic substances. The sewage treatment device in the embodiment can efficiently separate non-magnetic substances, magnetic substances and water flow, and improve the separation efficiency.

[0044] In the embodiment, the separation cylinder 100 is provided with an inlet 110, a first outlet 120 higher than the inlet 110 and a second outlet 130 higher than the first outlet 120; the separation cylinder 100 has a ring column-shaped separation cavity and a water outlet cavity 150 in the middle of the separation cavity and in a cylindrical shape, the top of the water outlet cavity 150 is connected with the ring-shaped inner side of the separation cavity through the first outlet 120, the ring-shaped outer side of the separation cavity is connected with the second outlet 130, the second outlet 130 is higher than the first outlet 120, and the ring-shaped outer side of the separation cavity is also connected with the inlet 110, the inlet 110 is lower than the first outlet 120, wherein the inlet 110 is located in the middle section or the lower middle section of the separation cavity, and the acceleration coil assembly 200 is wound on the outer wall of the separation cylinder 100 between the inlet 110 and the first outlet 120 or the second outlet 130; wherein the separation cavity as a whole can be in a column shape or a conical shape. Specifically, the separation cylinder 100 comprises an outer cylinder 160 and an inner cylinder 170 arranged in the outer cylinder 160, a ring column-shaped separation cavity is formed between the outer cylinder 160 and the inner cylinder 170, a water outlet cavity 150 is formed in the inner cylinder 170, the bottom of the water outlet cavity 150 is connected with the outside, the top of the inner cylinder 170 forms the first outlet 120, the top of the outer cylinder 160 is higher than the height of the inner cylinder 170, and the part of the outer cylinder 160 higher than the inner cylinder 170 forms the second outlet 130. It should be noted that the top of the inner cylinder 170 forms the first outlet 120, including that the top surface of the inner cylinder 170 is provided with the first outlet 120, and / or the side wall of the top of the inner cylinder 170 is provided with the first outlet 120; the top of the outer cylinder 160 forms the second outlet 130, including that the top surface of the outer cylinder 160 is provided with the second outlet 130, and / or the side wall of the top of the outer cylinder 160 is provided with the second outlet 130. In addition, when the top surface of the outer cylinder 160 is provided with the second outlet 130, the projection of the second outlet 130 along the axis direction of the separation cylinder 100 is located within the projection area of the separation cavity along the axis direction of the separation cylinder 100.

[0045] In addition, it should be noted that, because the first outlet 120 is located at the top of the inner cylinder 170, and when the magnetic material is in helical motion, the magnetic material is closer to the inner wall of the outer cylinder 160 under the influence of the centrifugal force, and will not be located on the outer surface of the inner cylinder 170, so that the magnetic material is not easy to enter the first outlet 120 of the inner cylinder 170, so that the separation accuracy of the magnetic material is higher.

[0046] The acceleration coil assembly 200 is sleeved outside the separation cylinder 100, and is used to accelerate the magnetic material in the separation cylinder 100 in the upward direction along the axis of the inlet 110 to the second outlet 130; the acceleration coil assembly 200 is helically wound outside the separation cylinder 100, wherein the helical angle of the acceleration coil is small, and can be approximately regarded as a circular ring distribution, and when the acceleration coil is approximately circularly distributed, the acceleration coil has a magnetic induction line in the axial direction of the separation cylinder 100, and the magnetic induction line is approximately regarded as being distributed along a straight line in the acceleration coil.

[0047] Wherein, the upward direction along the axis of the inlet 110 to the second outlet 130 refers to the axial direction of the separation cylinder 100, and the separation cylinder 100 is vertically placed, and the second outlet 130 is located above the inlet 110, and the axial direction from the inlet 110 to the second outlet 130 is the upward direction of the axis.

[0048] The helical magnetic separation layer 300 is arranged between the acceleration coil assembly 200 and the separation cylinder 100, and divides the acceleration coil assembly 200 into a magnetic part and a magnetic separation part, and the magnetic part is distributed in a helical line around the separation cylinder 100; the helical magnetic separation layer 300 is located between the magnetic separation part and the separation cylinder 100 to separate the magnetic separation part of the acceleration coil assembly 200, so as to realize isolation, and after isolation, the magnetic part of the acceleration coil assembly 200 is helically wound outside the separation cylinder 100. Wherein, the helical magnetic separation layer 300 can be integrally formed on the separation cylinder 100, or can be detachably installed on the outer circumferential surface of the separation cylinder 100.

[0049] It should be noted that when the magnetic part of the acceleration coil assembly 200 is in a helical shape, the magnetic induction line in the acceleration coil assembly 200 will also be distributed in a helical shape, so as to obtain a helical magnetic field, and at the same time, the separation cavity is in a ring column shape, and the separation cavity can guide the helical magnetic field, so that the magnetic material moves along the helical magnetic field in the separation cavity, and realizes helical motion. Wherein, the magnetic material can be a magnetic material carried by sewage, or a magnetic material artificially added, so as to ensure that the magnetic material in the separation cavity has a certain mass, so that the helical motion of the magnetic material has a large inertia, and thus can better drive the water flow to rotate.

[0050] The acceleration coil assembly 200 is configured to accelerate the magnetic substance in the sewage along the spiral magnetic portion by magnetism, the sewage overflows from the first outlet 120, and the magnetic substance escapes from the second outlet 130. It is understood that the sewage enters the separation cylinder 100 through the inlet 110, the acceleration coil assembly 200 forms a spiral magnetic portion through the spiral magnetic separation layer 300, the spiral magnetic portion forms a spiral magnetic force spiral line on the side wall of the separation cylinder 100, the magnetic substance in the sewage spirally rises under the action of the magnetic force, and at the same time drives the water flow to spiral, so that the water and non-magnetic solid pollutants in the sewage are separated, the separation of various substances is realized, and the water flow fills in the separation cylinder 100 and then overflows from the first outlet 120, and the magnetic substance spirals out of the second outlet 130 along the spiral magnetic force spiral line. The magnetic substance, water and non-magnetic substance can be directly separated, so that the separation efficiency is higher.

[0051] Referring to Figure 1 , Figure 2 and Figure 3 In some embodiments of the present application, the acceleration coil assembly 200 includes a plurality of acceleration coils, the acceleration coils are sequentially and spacedly arranged in the upward direction along the axis, and sequentially include a first acceleration coil, a second acceleration coil, and an Nth acceleration coil. The part of the first acceleration coil not isolated by the spiral magnetic separation layer 300 forms a first spiral section, the part of the Nth acceleration coil not isolated by the spiral magnetic separation layer 300 forms an Nth spiral section, and the connection line of the first spiral section to the Nth spiral section forms a complete spiral line. The acceleration coil assembly 200 is configured to sequentially energize the first acceleration coil, the second acceleration coil, and the Nth acceleration coil, and to de-energize or reduce the current after the next acceleration coil is energized, so as to accelerate the magnetic substance in the upward direction along the axis.

[0052] It is understood that the acceleration coil assembly 200 accelerates the magnetic substance through a plurality of acceleration coils, so that the magnetic substance spirally rises under the acceleration of the acceleration coil, so that the magnetic substance is separated from the sewage, and the spiral motion of the magnetic substance drives the water flow to rotate, so as to separate the water flow from the non-magnetic substance.

[0053] In the embodiment, the acceleration coil assembly 200 is controlled by a control unit, which is a module unit capable of storing operation programs and sending corresponding control instructions according to design conditions, such as a central processing unit or a single-chip microcomputer. The specific control mode of the control unit is as follows: after the sewage is introduced into the separation chamber from the inlet 110, the first acceleration coil is powered on, and the remaining acceleration coils are powered off. The magnetic substances in the sewage are adsorbed at the position of the first acceleration coil. After a predetermined time, the second acceleration coil is powered on, and the first acceleration coil is powered off or the current is reduced. After the theoretical time of the magnetic substance reaching the second acceleration coil, the third acceleration coil is powered on, and the second acceleration coil is powered off or the current is reduced. In this way, when the magnetic substance reaches the Nth acceleration coil, the Nth acceleration coil is powered off, and the magnetic substance spirally rises to the second outlet 130 under the action of the centrifugal force and escapes from the second outlet 130.

[0054] When there are two or more additional acceleration coils between two acceleration coils, both of the two acceleration coils can be powered on, for example, the first acceleration coil and the fourth acceleration coil. When the fourth acceleration coil is powered on, the first acceleration coil can also be powered on to continue to accelerate the next batch of magnetic substances.

[0055] It should be noted that when the second acceleration coil is powered on, the magnetic substance performs spiral motion, driving the water flow to spirally rise. Even if the first acceleration coil is powered off, the magnetic substance in the sewage continuously introduced from the inlet 110 will be attracted by the second acceleration coil and simultaneously driven by the water flow, so that the newly introduced magnetic substance in the sewage will also perform spiral rising motion along the separation chamber. When the current of the first acceleration coil is reduced, the magnetic force of the first acceleration coil will be lower than that of the second acceleration coil, and the newly introduced magnetic substance in the sewage can break away from the magnetic force of the first acceleration coil. The magnetic substance is guided by the first acceleration coil, so that the spiral motion of the magnetic substance can be consistent with the spiral motion track of the previous magnetic substance, and the water flow is also driven to rotate spirally.

[0056] Referring to Figure 1 , Figure 2 and Figure 3 , in some specific embodiments of the present application, the number of turns of the acceleration coil assembly 200 increases in the upward direction along the axis.

[0057] It should be understood that the number of turns of the acceleration coil assembly 200 increases in the upward direction along the axis, so that when the same current is introduced into all the acceleration coil assemblies 200, the magnetic field strength of the acceleration coil increases in the upward direction along the axis, so that the magnetic field force acting on the magnetic substance gradually increases, and the magnetic substance can be gradually accelerated to smoothly escape from the water surface and achieve separation.

[0058] In the embodiment, the coil turns incrementally can be gradually increased; also can be divided into multiple turns intervals along the upward direction of the axis, the turns in each turns interval are the same, and the total turns of the multiple turns intervals along the upward direction of the axis are the same.

[0059] As another way, the separation cylinder 100 can also be conical, and the diameter of the top of the separation cylinder 100 is larger than the diameter of the bottom, when the coil is wound on the separation cylinder 100 with the same number of turns, the wire length used by the top of the separation cylinder 100 is more, so that the magnetic field strength of the top of the separation cylinder 100 is stronger.

[0060] Referring to Figure 5 With Figure 7 As shown in the figure, in some embodiments of the application, the separation cylinder 100 further comprises a rotating cylinder 180 rotatably sleeved outside the inner cylinder 170.

[0061] It is worth understanding that the rotating cylinder 180 can rotate under the driving of the rotating water flow to store a certain rotational potential energy, when part of the magnetic material has not been rotated by the spiral, the rotating cylinder 180 can release the rotational potential energy to maintain the rotation of the water flow, so that the water flow can rotate longer, and when the magnetic material is driven to rotate by the accelerating coil assembly 200, the rotational speed of the water flow increases, and in turn the rotational speed of the rotating cylinder 180 increases, so that the rotating cylinder 180 can increase its rotational potential energy, and the rotational speed of the rotating cylinder 180 will fluctuate within a certain speed range to assist the rotation of the water flow and reduce the friction between the water flow and the outer circumference of the inner cylinder 170.

[0062] Referring to Figure 4 As shown in the figure, in some embodiments of the application, the second outlet 130 is tangent to the side wall of the separation cylinder 100, and the second outlet 130 is located at the end of the magnetic part along the upward direction of the axis.

[0063] It is worth understanding that when the magnetic material moves along the magnetic part to the second outlet 130, the magnetic material will be directly thrown out along the tangent direction of the magnetic part, and the second outlet 130 is tangent to the side wall of the separation cylinder 100 and located at the end of the magnetic part, so that the magnetic material will directly enter the second outlet 130 and move along the second outlet 130.

[0064] Specifically, the sewage treatment device further comprises a first pipeline 131: separation cavity 140, which is communicated with the second outlet 130 to collect the escaped magnetic material, so that the magnetic material can move along the first pipeline 131: separation cavity 140, wherein the first pipeline 131: separation cavity 140 can be arranged in a parabolic shape to fit the motion curve of the magnetic material, and a collection box is placed at the end of the first pipeline 131: separation cavity 140, so that the escaped magnetic material can be directly collected.

[0065] Referring toFigure 5 As shown, in some embodiments of the present application, the separation cylinder 100 is further provided with a third outlet 190 below the inlet 110, and the third outlet 190 is used to discharge the non-magnetic substances.

[0066] It is worth understanding that when the water flow rotates, the non-magnetic substances are affected by the centrifugal force and precipitate at the bottom of the separation cylinder 100, so that the non-magnetic substances are separated from the water flow, and the complete separation of the solid pollutants in the sewage is achieved.

[0067] Specifically, the bottom of the separation cylinder 100 is provided with a third outlet 190, and the third outlet 190 is communicated with the bottom of the separation chamber, and the sewage treatment device comprises a second pipeline 191, and the second pipeline 191 is communicated with the third outlet 190 to collect the precipitated non-magnetic substances. In this embodiment, the outer cylinder 160 side wall of the separation cylinder 100 is provided with the third outlet 190, and / or the outer cylinder 160 bottom surface of the separation cylinder 100 is provided with the third outlet 190, wherein when the outer cylinder 160 bottom of the separation cylinder 100 is provided with the third outlet 190, the projection of the third outlet 190 along the axis direction of the separation cylinder 100 is located within the projection area of the separation chamber along the axis direction of the separation cylinder 100. In addition, the second pipeline 191 is inclined upward, and the second pipeline 191 is internally provided with a spiral rod with spiral blades, and when the spiral rod rotates, the spiral blades will lift out the precipitated non-magnetic substances, and the non-magnetic substances are taken out.

[0068] Referring to Figure 4 As shown, in some embodiments of the present application, the inlet 110 is tangent to the side wall of the separation cylinder 100, and is used to form a spiral water flow.

[0069] It is worth understanding that the inlet 110 is tangent to the side wall of the separation cylinder 100, and when the water flow enters the separation chamber from the position of the inlet 110 at a certain initial speed, the water flow will be converted from linear motion to spiral motion and has rotational potential energy to rotate, and the water flow will also drive the rotating cylinder 180 to rotate, and by making the inlet 110 tangent to the separation cylinder 100, the water flow can perform spiral motion.

[0070] In the embodiment, the sewage treatment device comprises an inlet pipe 111 connected to the separation cylinder 100 through an inlet 110, and the inlet pipe 111 is arranged upwardly and obliquely so as to convert the water flow with gravity potential into water flow with kinetic energy, thereby providing the water flow entering the inlet 110 with initial speed. It should be noted that the circumferential rotation direction of the water flow is the same as that of the magnetic field of the magnetic part, that is, when the water flow rotates clockwise, the magnetic field of the magnetic part also rotates clockwise, and the difference between them is that the water flow moves downwardly in spiral under the influence of gravity to form a vortex, while the magnetic field of the magnetic part drives the magnetic substance to move upwardly in spiral to overcome the gravity, but the magnetic substance can drive the water flow to rotate clockwise, so that the water flow can continuously rotate, and through the rotation of the water flow, the non-magnetic substance is deposited at the bottom of the separation cylinder 100 and discharged from the third outlet 190, and the clean water removing the magnetic substance and the non-magnetic substance overflows from the first outlet 120.

[0071] Referring to Figure 4 In some embodiments of the present application, the inlet 110 is directed to the magnetic isolation part.

[0072] It should be understood that the water flow entering from the inlet 110 will collide with the inner wall of the outer cylinder 160 to convert linear motion into spiral motion, and the long-term erosion of the water flow when colliding with the inner wall of the outer cylinder 160 can cause wear of the outer cylinder 160, and the magnetic isolation part has a spiral magnetic isolation layer 300, and the wall thickness of the outer cylinder 160 in the region where the spiral magnetic isolation layer 300 is located is thicker, which can provide better support and service life.

[0073] The second aspect of the present application provides a sewage treatment process, which comprises the sewage treatment device of the first aspect of the present application, and the specific steps comprise:

[0074] S1: The accelerating coil assembly 200 is powered on, and the magnetic part forms a spiral line-shaped magnetic field;

[0075] S2: The inlet 110 is connected to the water flow with a preset initial speed, the magnetic substance in the water flow rotates in spiral along the magnetic part, and drives the water flow to rotate in spiral;

[0076] S3: The water flow rotates to form a top clear water layer, and the clear water layer overflows from the first outlet 120; the magnetic substance rotates in spiral to the second outlet 130 and escapes.

[0077] It should be understood that the spiral magnetic field drives the magnetic substance to move in spiral, thereby driving the water to rotate in spiral, so that the non-magnetic substance in the sewage is settled under the action of centrifugal force, and the magnetic substance moves in spiral to the second outlet 130 and is discharged, thereby realizing the separation of the magnetic substance, the non-magnetic substance and the water, and improving the separation efficiency.

[0078] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A sewage treatment apparatus characterised in that, The sewage treatment device comprises: a separation cylinder provided with an inlet, a first outlet higher than the inlet, and a second outlet higher than the first outlet; an accelerating coil assembly sleeved outside the separation cylinder and used for accelerating magnetic substances in the separation cylinder in an upward direction along an axis of the inlet to the second outlet; a spiral magnetic shielding layer arranged between the accelerating coil assembly and the separation cylinder and separating the accelerating coil assembly into a magnetic part and a magnetic shielding part, the magnetic part being distributed in a spiral line around the separation cylinder; wherein the accelerating coil assembly is configured to spiral accelerate magnetic substances in sewage along a spiral line through the magnetic part, the sewage overflowing from the first outlet, and the magnetic substances escaping from the second outlet beyond the first outlet; the separation cylinder comprises an outer cylinder and an inner cylinder arranged in the outer cylinder, a drainage cavity is arranged in the inner cylinder, a separation cavity is formed between the inner cylinder and the outer cylinder, a top of the inner cylinder forms the first outlet, and the first outlet communicates the separation cavity and the drainage cavity; the separation cylinder further comprises a rotating cylinder rotatably sleeved outside the inner cylinder.

2. The sewage treatment device of claim 1, wherein: the accelerating coil assembly comprises a plurality of accelerating coils, the accelerating coils are sequentially and spacedly arranged in the upward direction along the axis, and are sequentially a first accelerating coil, a second accelerating coil, and an Nth accelerating coil, a part of the first accelerating coil not isolated by the spiral magnetic shielding layer forms a first spiral segment, a part of the Nth accelerating coil not isolated by the spiral magnetic shielding layer forms an Nth spiral segment, and a line connecting the first spiral segment to the Nth spiral segment forms a complete spiral line; wherein the accelerating coil assembly is configured to sequentially energize the first accelerating coil, the second accelerating coil, and the Nth accelerating coil, and to de-energize or reduce current of the next accelerating coil after energization, so as to spiral accelerate the magnetic substances in the upward direction along the axis.

3. The sewage treatment device of claim 1, wherein: the accelerating coil assembly has an increasing number of turns in the upward direction along the axis.

4. The sewage treatment device of claim 1, wherein: the second outlet is tangent to a side wall of the separation cylinder, and the second outlet is located at an end of the magnetic part in the upward direction along the axis.

5. The sewage treatment device of claim 1, wherein: the separation cylinder is further provided with a third outlet lower than the inlet, and the third outlet is used for precipitating and discharging non-magnetic substances.

6. The sewage treatment device of claim 1, wherein: the inlet is tangent to the side wall of the separation cylinder and is used for forming a spiral water flow.

7. The sewage treatment device of claim 1, wherein: the inlet is directed to the magnetic shielding part.

8. A sewage treatment process characterised in that, The sewage treatment device comprises the device according to any one of claims 1 to 7, and the specific steps comprise: S1: energizing the accelerating coil assembly, and the magnetic part forming a spiral magnetic field; S2: the inlet is supplied with a water flow having a preset initial speed, the magnetic substances in the water flow spiral rotating along the magnetic part, and the water flow spiral rotating; S3: the water flow rotating forms a top clear water layer, the clear water layer overflowing from the first outlet, and the magnetic substances spiral rotating to escape from the second outlet.

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