A filter material automatic rotary stirring purification slow filtering device and use method

Abstract

A filter material automatic rotary stirring purification slow filter device and a use method thereof, comprising a slow filter tank body, a hydraulic lifting mechanism, a stirring mechanism, a photoelectric control system and a scraping device, wherein a bracket is arranged above the slow filter tank body, the stirring mechanism and the scraping device are arranged on the bracket, the bottom of the slow filter tank body is connected to a drain pipe, a liquid level pipe is arranged on the drain pipe, and a photoelectric control system is arranged on the liquid level pipe; when the device is working, the photoelectric control system controls the hydraulic lifting mechanism to lift and lower, and the stirring mechanism and the scraping device can stir and scrape the filter material; the device of the present invention integrates the functions of automatic lifting, timed rotary stirring and automatic flattening of filter material, can effectively solve the problems of slow filter tank filter material compaction and blockage, and at the same time solves the waste phenomenon of scraping off the surface filter material after the filter tank is blocked.

Description

Technical Field

[0001] The invention relates to the field of biological slow filter structure design, and in particular to a filter material automatic rotary stirring purification slow filter device and a use method thereof. Background Art

[0002] After the biological slow filter has been running for a period of time, a layer of solid impurities will be retained on the surface of the filter material due to the mechanical interception effect of the filter material. Due to the cementation of organic substances such as oil and biological slime inside the solid impurities, as well as the mixed cementation of inorganic and organic substances, the surface filter material in the slow filter will harden and compact, causing the slow filter to have high blockage values, high liquid levels, and reduced water flow during operation. If such problems are not solved in time, the slow filter will be seriously blocked, and will eventually pose a threat to the effluent water quality, and will bring great difficulties to the maintenance and inspection of the slow filter.

[0003] The existing slow filter system usually only has the basic function of filtering. Once the slow filter is blocked due to long-term operation, it is necessary to manually clean the filter material. The cleaning efficiency is low and it requires a lot of manpower. Therefore, it is necessary to design an automatic rotary stirring and purification slow filter device for filter material to fundamentally solve the problem of filter material compaction inside the biological slow filter. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the present invention provides a filter material automatic rotary stirring purification slow filtration device and a method of use. The device integrates the functions of automatic lifting and lowering, timed rotary stirring, and automatic flattening of filter material, which can effectively solve the problems of filter material compaction and blockage in the slow filter tank, and at the same time solves the waste of scraping off the surface filter material after the filter tank is blocked.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0006] A filter material automatic rotary stirring purification slow filtering device comprises a slow filter tank body, a hydraulic lifting mechanism, a stirring mechanism, a photoelectric control system and a scraping device. A bracket is arranged above the slow filter tank body, and the stirring mechanism and the scraping device are installed on the bracket. The stirring mechanism and the scraping device are controlled to rise and fall by the hydraulic lifting mechanism. The bottom of the slow filter tank body is connected to a drain pipe, and a liquid level pipe is installed on the drain pipe. The liquid level pipe is installed with a photoelectric control system.

[0007] In the preferred scheme, the hydraulic lifting mechanism includes an oil pump, a hydraulic motor, a transmission gear, an oil inlet pipe, an oil return pipe, a first track groove, a second track groove and a pulley; the first track groove is arranged on the front and rear sides of the bracket, and the second track groove is arranged on the left and right sides of the bracket. The other ends of the first track groove and the second track groove are vertically arranged at the upper end opening of the slow filter tank body and are symmetrically distributed at right angles. The first track groove is provided with saw teeth, and the second track groove is provided with a slide groove.

[0008] In the preferred solution, pulleys are provided on the left and right ends of the bracket and slide along the second track groove. Hydraulic motors are provided on the front and rear ends of the bracket. The hydraulic motors are connected to the transmission gear and are clamped in the saw teeth. An oil pump is provided next to the slow filter tank. The oil pump is connected to the hydraulic motor through an oil inlet pipe and an oil return pipe and drives the transmission gear to rotate. The rotation of the transmission gear can drive the entire bracket to rise and fall vertically along the first track groove and the second track groove.

[0009] In a preferred embodiment, the stirring mechanism includes a first rotating motor and a spiral stirring blade; the first rotating motor is vertically installed at the four corners of the lower end surface of the bracket, and the transmission shaft of the first rotating motor is connected to the spiral stirring blade.

[0010] In a preferred embodiment, the scraping device includes a second rotating motor and a perforated scraper. The second rotating motor is vertically installed at the center of the lower end surface of the bracket. The transmission shaft of the second rotating motor is connected to the perforated scraper. A reinforcement rod is connected between the perforated scraper and the transmission shaft.

[0011] In the preferred scheme, the photoelectric control system includes a distribution box, a control cable, a slot-type photoelectric switch, a liquid level tube and a floating rod; the liquid level tube is vertically installed on the drainage pipe and is connected to the drainage pipe, a floating rod is provided in the liquid level tube, and a slot-type photoelectric switch is provided on the outer wall of the liquid level tube, and the slot-type photoelectric switch is connected to the distribution box through the control cable.

[0012] In a preferred solution, a wireless information transmission device is provided inside the distribution box, and the wireless information transmission device is wirelessly connected to the control systems of the hydraulic lifting mechanism, the stirring mechanism and the scraping device.

[0013] A method for using a filter material automatic rotary stirring purification slow filtration device, the device comprising the following steps when used:

[0014] Step 1: Inject the filter material into the filter tank from the top opening of the slow filter tank body. After the filter material passes through the slow filtration, it is formed into filtrate and discharged from the drain pipe. During this period, since the output speed of the filtrate is higher than the discharge speed of the drain pipe, the drain pipe is always filled with filtrate and the liquid level is the same as that of the slow filter tank body;

[0015] Step 2: After the slow filter tank has been running for a long time, the filter material hardens and hardens, causing the slow filter tank to become blocked. The liquid level in the drain pipe drops, and the floating rod in the liquid level pipe drops accordingly, triggering the slot-type photoelectric switch.

[0016] Step 3: The slot-type photoelectric switch sends a wireless signal to the hydraulic lifting mechanism, the oil pump starts and controls the transmission shaft of the hydraulic motor to rotate, the transmission gear rotates synchronously and drives the entire bracket to sink 50~80cm;

[0017] Step 4: After the bracket and the stirring mechanism are lowered into place, the first rotary motor starts and drives the spiral stirring blade to rotate to stir the filter material. The stirring time is controlled within 30-50 minutes.

[0018] Step 5: After the mixing work is completed, the hydraulic motor rotates in the opposite direction and drives the entire bracket to rise 30~60cm, and drives the scraping device to rise to the surface of the filter material;

[0019] Step 6: The second rotating motor starts and drives the scraper with holes to scrape the surface of the filter material to make the surface of the filter material flat again. The whole scraping operation lasts for 30 to 50 minutes.

[0020] Step 7: After the scraping operation is completed, the hydraulic motor continues to rotate in the opposite direction, driving the entire bracket to rise to the initial position, so that the stirring mechanism and the scraping device are completely separated from the filter material, and the joint operation is completed.

[0021] This patent can achieve the following beneficial effects:

[0022] 1. The device can fully stir the filter material that has been running for a long time inside the slow filter tank, fundamentally solving the problem of filter material compaction, effectively preventing the filter material from clogging the slow filter tank, and ensuring the filtration quality of the filter tank;

[0023] 2. This device can realize fully automated filtering, stirring and scraping through the coordinated work of various devices, which saves human resources and improves work efficiency;

[0024] 3. When the filter material is not stirred, the hydraulic lifting mechanism can ensure that the stirring mechanism and scraping device in the device are completely separated from the filter material, preventing it from being corroded and rusted due to long-term immersion, thereby increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Figure 1 It is the overall structural intention of the present invention;

[0027] Figure 2 The overall structure of the present invention Figure 2 ;

[0028] Figure 3 It is a partial enlarged schematic diagram of the hydraulic lifting mechanism of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the stirring mechanism and the scraping device of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the photoelectric control system of the present invention;

[0031] Figure 6 It is a front view of the overall structure of the present invention;

[0032] Figure 7 It is a plan view of the overall structure of the present invention.

[0033] In the figure: slow filter tank body 1, hydraulic lifting mechanism 2, oil pump 201, hydraulic motor 202, transmission gear 203, oil inlet pipe 204, oil return pipe 205, first track groove 206, sawtooth 207, second track groove 208, pulley 209, stirring mechanism 3, first rotating motor 301, spiral stirring blade 302, drain pipe 4, photoelectric control system 5, distribution box 501, control cable 502, slot-type photoelectric switch 503, liquid level tube 504, floating rod 505, bracket 6, scraping device 7, second rotating motor 701, scraper with holes 702, reinforcement rod 703. DETAILED DESCRIPTION

[0034] like Figure 1 and Figure 2 As shown, a filter material automatic rotary stirring purification slow filtering device comprises a slow filter tank body 1, a hydraulic lifting mechanism 2, a stirring mechanism 3, a photoelectric control system 5 and a scraping device 7. A bracket 6 is arranged above the slow filter tank body 1. The slow filter tank body 1 is usually made of concrete. The bracket 6 is welded into a cross-shaped straight beam with square steel. The stirring mechanism 3 and the scraping device 7 are arranged on the bracket 6. The stirring mechanism 3 and the scraping device 7 are controlled to rise and fall by the hydraulic lifting mechanism 2. The bottom of the slow filter tank body 1 is connected to a drain pipe 4. A liquid level pipe 504 is arranged on the drain pipe 4. A photoelectric control system 5 is arranged on the liquid level pipe 504. The photoelectric control system 5 is used to control the lifting and falling of the lifting mechanism 2 and the start and stop of the stirring mechanism 3 and the scraping device 7.

[0035] The preferred solution is Figure 3 , Figure 6 and Figure 7 As shown, the hydraulic lifting mechanism 2 includes an oil pump 201, a hydraulic motor 202, a transmission gear 203, an oil inlet pipe 204, an oil return pipe 205, a first track groove 206, a second track groove 208 and a pulley 209; the first track groove 206 is arranged on the front and rear sides of the bracket 6, and the second track groove 208 is arranged on the left and right sides of the bracket 6. The other ends of the first track groove 206 and the second track groove 208 are vertically arranged at the upper end opening of the slow filter tank body 1 and are symmetrically distributed at right angles. The first track groove 206 and the second track groove 208 are usually made of a steel groove with an inner wall spacing of 100 mm, a wall thickness of 10 mm, and a groove height of 50 mm. The first track groove 206 is provided with a sawtooth 207, and the second track groove 208 is provided with a slide groove.

[0036] The preferred solution is Figure 3As shown, pulleys 209 are provided at the left and right ends of the bracket 6 and slide along the second track groove 208. Hydraulic motors 202 are provided at the front and rear ends of the bracket 6. The hydraulic motor 202 is connected to the transmission gear 203 and is clamped in the sawtooth 207. An oil pump 201 is provided next to the slow filter tank body 1. The oil pump adopts the VP-20FA3DH hydraulic workstation. The oil pump 201 is connected to the hydraulic motor 202 through the oil inlet pipe 204 and the oil return pipe 205 and drives the transmission gear 203 to rotate. The hydraulic motor 202 adopts a low-speed and high-torque OMR-400 hydraulic motor. The rotation of the transmission gear 203 can drive the entire bracket 6 to rise and fall vertically along the first track groove 206 and the second track groove 208.

[0037] When the hydraulic lifting mechanism 2 starts working, the oil pump 201 provides hydraulic power to the hydraulic motor 202, and the hydraulic motor 202 controls the rotation of the transmission gear 203. The transmission gear 203 is engaged in the sawtooth 207 and slides up and down along the first track groove 206. The pulley 209 on the other side of the bracket 6 is engaged in the second track groove 208 to further limit the stroke of the bracket 6, ensuring that the bracket 6 can slide vertically up and down.

[0038] The preferred solution is Figure 4 As shown, the stirring mechanism 3 includes a first rotating motor 301 and a spiral stirring blade 302; the first rotating motor 301 is vertically installed at the four corners of the lower end surface of the bracket 6, and the first rotating motor 301 adopts a unidirectional asynchronous motor, model YL90S-4; the transmission shaft of the first rotating motor 301 is connected to the spiral stirring blade 302, and after the first rotating motor 301 is started, the four spiral stirring blades 302 will stir the surface filter material in the slow filter tank body 1 upward, and have a certain range of influence, so that the entire surface filter material can achieve the effect of spiral stirring and loosening.

[0039] The preferred solution is Figure 4 As shown, the scraping device 7 includes a second rotating motor 701 and a perforated scraper 702. The second rotating motor 701 is vertically installed at the center of the lower end surface of the bracket 6. The second rotating motor 701 also adopts a unidirectional asynchronous motor, and the model is also YL90S-4; the transmission shaft of the second rotating motor 701 is connected to the perforated scraper 702. When the second rotating motor 701 rotates, it drives the perforated scraper 702 to rotate synchronously, and flattens the surface of the filter material inside the slow filter tank 1, so that the surface of the filter material always remains flat and not uneven, thereby improving the filtration quality of the filter tank. A circular hole with an inner diameter of 4 cm is opened on the perforated scraper 702. Its purpose is to reduce the excessive resistance caused by the movement of the filter material when the scraper is performing the scraping operation, thereby affecting the scraping effect. A reinforcement rod 703 is connected between the perforated scraper 702 and the transmission shaft to further improve the stability of the scraper when it is working.

[0040] The preferred solution is Figures 5 to 7As shown, the photoelectric control system 5 includes a distribution box 501, a control cable 502, a slot-type photoelectric switch 503, a liquid level tube 504 and a floating rod 505; the liquid level tube 504 is vertically installed on the drain pipe 4 and is connected to the drain pipe 4. The drain pipe 4 is usually made of a transparent organic glass tube with an inner diameter of 14 mm. A black floating rod 505 is arranged in the liquid level tube 504, and a slot-type photoelectric switch 503 is arranged on the outer wall of the liquid level tube 504. The slot-type photoelectric switch 503 is connected to the distribution box 501 through the control cable 502; a wireless information transmission device is arranged inside the distribution box 501, and the wireless information transmission device is wirelessly connected to the control system of the hydraulic lifting mechanism 2, the stirring mechanism 3 and the leveling device 7;

[0041] When the filter tank is working normally, the output speed of the filtrate in the slow filter tank body 1 is higher than the discharge speed of the drain pipe 4, and the drain pipe 4 is always full of filtrate. The height of the floating rod 505 is located at the slot-type photoelectric switch 503 and is the same as the liquid level in the slow filter tank body 1.

[0042] When the slow filter tank 1 is blocked, the output rate of the filtrate is lower than the discharge rate of the drain pipe 4, the liquid level in the liquid level tube 504 drops rapidly, and the black floating rod 505 also drops accordingly. When the floating rod 505 drops to the middle of the slot-shaped photoelectric switch 503, the incident light will be cut off. At this time, a wireless information transmission device is installed inside the distribution box 501, which will send a wireless signal to the control system of the hydraulic lifting mechanism 2, the stirring mechanism 3 and the scraping device 7, and the device will start immediately and perform corresponding work.

[0043] Embodiment 1:

[0044] Step 1: Inject the filter material into the filter tank from the top opening of the slow filter tank body 1. The filter tank body 1 is made of concrete with an inner diameter of D=1.63m, a height of H=1.8m, and a wall thickness of L=0.2m. The drain pipe 4 is connected to the bottom of the slow filter tank body 1. The liquid level pipe 504 on the drain pipe 4 is a transparent organic glass tube with an inner diameter of 14mm. The height of the floating rod 50 inside is the same as the filter material level in the slow filter tank body 1.

[0045] Step 2: After the slow filter tank 1 has been running for a long time, the filter material hardens and hardens, causing the slow filter tank 1 to be blocked, and the liquid level in the drain pipe 4 drops. The black floating rod 505 in the liquid level pipe 504 drops accordingly and triggers the slot-type photoelectric switch 503 of model E3S-GS30E4;

[0046] Step 3: The slot-type photoelectric switch 503 sends a wireless signal to the hydraulic lifting mechanism 2, the oil pump 201 starts and controls the transmission shaft of the hydraulic motor 202 to rotate, the transmission gear 203 rotates synchronously and drives the entire bracket 6 to sink 50cm, so that the stirring mechanism 3 enters the filter material;

[0047] Step 4: After the support 6 and the stirring mechanism 3 are lowered into place, the first rotating motor 301 is started and drives the spiral stirring blade 302 to rotate, stirring the filter material upwards, and the stirring time is 50 minutes;

[0048] Step 5: After the stirring work is completed, the hydraulic motor 202 rotates in the opposite direction and drives the entire support 6 to rise 30 cm, and drives the scraping device 7 to rise to the surface of the filter material;

[0049] Step 6: The second rotating motor 701 is started and drives the scraper with holes 702 to scrape the surface of the filter material to make the surface of the filter material smooth again. The scraping operation lasts for 30 minutes.

[0050] Step 7: After the scraping operation is completed, the hydraulic motor 202 continues to rotate in the opposite direction, driving the entire bracket 6 to rise to the initial position, so that the stirring mechanism 3 and the scraping device 7 are completely separated from the filter material, and a joint operation is completed; at this time, the filtrate output speed inside the slow filter tank body 1 is higher than the drainage speed of the drainage pipe 4, and the floating rod 505 rises back to the top of the slot-type photoelectric switch 503 and is parallel to the liquid level in the slow filter tank body 1.

[0051] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The various technical features described in the present invention can be combined with each other without conflict. The protection scope of the present invention shall be the technical solutions described in the claims, including the equivalent replacement solutions of the technical features in the technical solutions described in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A filter material automatic rotary stirring purification slow filtration device, comprising a slow filter tank body (1), a hydraulic lifting mechanism (2), a stirring mechanism (3), a photoelectric control system (5) and a scraping device (7), characterized in that: A support (6) is mounted above the slow filter tank body (1), a stirring mechanism (3) and a scraping device (7) are mounted on the support (6), the stirring mechanism (3) and the scraping device (7) are controlled to rise and fall by a hydraulic lifting mechanism (2), the bottom of the slow filter tank body (1) is connected to a drain pipe (4), a liquid level pipe (504) is mounted on the drain pipe (4), and a photoelectric control system (5) is mounted on the liquid level pipe (504); The photoelectric control system (5) comprises a distribution box (501), a control cable (502), a slot-type photoelectric switch (503), a liquid level tube (504) and a floating rod (505); the liquid level tube (504) is vertically mounted on the liquid discharge tube (4) and is connected to the liquid discharge tube (4); a floating rod (505) is arranged inside the liquid level tube (504); a slot-type photoelectric switch (503) is arranged on the outer wall of the liquid level tube (504); the slot-type photoelectric switch (503) is connected to the distribution box (501) via the control cable (502); a wireless information transmission device is arranged inside the distribution box (501); the wireless information transmission device is wirelessly connected to the control systems of the hydraulic lifting mechanism (2), the stirring mechanism (3) and the scraping device (7); The scraping device (7) comprises a second rotating motor (701) and a scraper with holes (702); the second rotating motor (701) is vertically mounted at the center of the lower end surface of the bracket (6); a transmission shaft of the second rotating motor (701) is connected to the scraper with holes (702); a reinforcement rod (703) is connected between the scraper with holes (702) and the transmission shaft.

2. The filter material automatic rotary stirring purification slow filtration device according to claim 1 is characterized by: The hydraulic lifting mechanism (2) comprises an oil pump (201), a hydraulic motor (202), a transmission gear (203), an oil inlet pipe (204), an oil return pipe (205), a first track groove (206), a second track groove (208) and a pulley (209); the first track groove (206) is arranged on the front and rear sides of the bracket (6), the second track groove (208) is arranged on the left and right sides of the bracket (6), the other ends of the first track groove (206) and the second track groove (208) are vertically arranged at the upper end opening of the slow filter tank body (1) and are symmetrically distributed at right angles, the first track groove (206) is provided with saw teeth (207), and the second track groove (208) is provided with a slide groove.

3. The filter material automatic rotary stirring purification slow filtration device according to claim 2 is characterized by: Pulleys (209) are provided at the left and right ends of the bracket (6) and are limitedly slidable along the second track groove (208); hydraulic motors (202) are provided at the front and rear ends of the bracket (6); the hydraulic motors (202) are connected to the transmission gears (203) and are clamped in the saw teeth (207); an oil pump (201) is provided beside the slow filter tank body (1); the oil pump (201) is connected to the hydraulic motor (202) via an oil inlet pipe (204) and an oil return pipe (205) and drives the transmission gears (203) to rotate; the rotation of the transmission gears (203) can drive the entire bracket (6) to vertically rise and fall along the first track groove (206) and the second track groove (208).

4. The filter material automatic rotary stirring purification slow filtration device according to claim 1 is characterized in that: The stirring mechanism (3) comprises a first rotating motor (301) and a spiral stirring blade (302); the first rotating motor (301) is vertically mounted at the four corners of the lower end surface of the bracket (6), and a transmission shaft of the first rotating motor (301) is connected to the spiral stirring blade (302).

5. The filter material automatic rotary stirring purification slow filtration device according to any one of claims 1 to 4, characterized in that: The use of the device includes the following steps: 1): The filter material is injected into the filter tank from the top opening of the slow filter tank body (1). After the filter material is slowly filtered, it is formed into filtrate and discharged from the drainage pipe (4). During this period, since the output speed of the filtrate is higher than the drainage speed of the drainage pipe (4), the drainage pipe (4) is always filled with filtrate and has the same liquid level as the slow filter tank body (1); 2): After the slow filter tank (1) has been running for a long time, the filter material hardens and becomes compacted, causing the slow filter tank (1) to become blocked, and the liquid level in the drain pipe (4) to drop. The floating rod (505) in the liquid level pipe (504) then drops and triggers the slot-type photoelectric switch (503); 3): The slot-shaped photoelectric switch (503) sends a wireless signal to the hydraulic lifting mechanism (2), the oil pump (201) starts and controls the transmission shaft of the hydraulic motor (202) to rotate, the transmission gear (203) rotates synchronously and drives the entire bracket (6) to sink 50-80 cm; 4): After the support (6) and the stirring mechanism (3) are lowered into place, the first rotating motor (301) is started and drives the spiral stirring blade (302) to rotate, thereby stirring the filter material. The stirring time is controlled within 30 to 50 minutes; 5): After the stirring work is completed, the hydraulic motor (202) rotates in the opposite direction and drives the entire support (6) to rise 30 to 60 cm, and drives the scraping device (7) to rise to the surface of the filter material; 6): The second rotating motor (701) starts and drives the scraper with holes (702) to scrape the surface of the filter material to make the surface of the filter material smooth. The whole scraping operation lasts for 30 to 50 minutes; 7): After the scraping operation is completed, the hydraulic motor (202) continues to rotate in the opposite direction, driving the entire support (6) to rise to the initial position, so that the stirring mechanism (3) and the scraping device (7) are completely separated from the filter material, and a joint operation is completed.

Images