CN218188416U - Solid-liquid separation device for efficiently removing suspended matters in liquid dung - Google Patents
Solid-liquid separation device for efficiently removing suspended matters in liquid dung Download PDFInfo
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- CN218188416U CN218188416U CN202221695651.3U CN202221695651U CN218188416U CN 218188416 U CN218188416 U CN 218188416U CN 202221695651 U CN202221695651 U CN 202221695651U CN 218188416 U CN218188416 U CN 218188416U
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Abstract
The utility model discloses a solid-liquid separation device for efficiently removing suspended matters in liquid dung, which comprises a liquid dung pool and a filtrate pool, wherein a liquid dung pool submersible stirrer, a liquid dung pump and a liquid dung pool liquid level sensor are arranged in the liquid dung pool, and the solid-liquid separation device also comprises a spiral extrusion type solid-liquid separator and an unpowered mirror surface screen separation device, the liquid dung in the liquid dung pool sequentially passes through the spiral extrusion type solid-liquid separator and the unpowered mirror surface screen separation device along a pipeline to realize solid-liquid separation, and liquid flows into the filtrate pool; the combination of the spiral extrusion type solid-liquid separator and the unpowered mirror surface sieve separation device is adopted, the practicability and stability of solid-liquid separation are realized, the removal rate of suspended matters in liquid dung is high, the water outlet quality is good, the operation load and the operation cost of a sewage treatment unit are reduced, the power extrusion part of the traditional power type mirror surface sieve type solid-liquid separator is optimized to be unpowered separation, the operation cost is reduced on the premise that the water outlet effect is ensured, the treatment capacity is improved, and the electric load and the fault rate are reduced.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, especially relate to a high-efficient solid-liquid separation who gets rid of suspended solid in liquid dung.
Background
At present, the technology for separating the liquid dung of large and medium-sized dairy farms at home and abroad is mainly adopted: screw extrusion type solid-liquid separator, horizontal screw centrifuge, plate-and-frame filter press, dynamic mirror screen type solid-liquid separator, etc.
When the liquid dung is processed by adopting a spiral extrusion type solid-liquid separator, the liquid dung is pumped into the separator, the liquid dung is extruded forwards by the spiral, and the liquid dung is filtered out by a screen mesh wrapped by the outer layer of the spiral, so that the effect of separating the liquid dung is realized. The quality of the process effect depends on the size of the screen pores, the larger the screen pores are, the poorer the water outlet effect is, the higher the treatment capacity is, and on the contrary, the smaller the screen pores are, the better the water outlet effect is, the lower the treatment capacity is, the higher the breakage rate of the screen is, and the currently and generally adopted screen with the aperture of 0.75mm in China has the slightly poorer water outlet effect and treatment capacity.
When the liquid dung is separated by a horizontal screw centrifuge, the liquid dung is pumped into the horizontal screw centrifuge and is centrifugally separated according to the different qualities of suspended substances and water in the liquid dung through a screen and a screw which rotate in the centrifuge at high speed in forward and reverse directions. The process has good effect on removing suspended matters in the liquid dung, but the equipment has high requirement on the stability of the concentration of the liquid dung, needs to add flocculating agents, has high equipment investment, has high operation and maintenance cost such as agent treatment per ton of water, high power consumption cost and the like, has low liquid dung treatment capacity and low automation operation degree.
When the liquid dung is separated by a plate-and-frame filter press, the prepared liquid dung is pumped into filter cloth of the plate-and-frame filter press, and liquid phase in the liquid dung is extruded out by pressurizing the filter cloth. The process has good effect on removing suspended matters in the liquid dung, but the process is complex to match, the raw liquid dung needs to be coagulated, flocculated and prepared, the dosage of flocculating agent is large, the equipment investment is large, the operation and maintenance cost is high, and the liquid dung treatment capacity is poor.
When the liquid dung is separated by the power mirror surface screen type solid-liquid separator, pumping the liquid dung into the power mirror surface screen type solid-liquid separator, enabling the liquid dung to flow downwards along the large-curved-surface screen mesh under the action of gravity, filtering out a liquid phase part through the large-curved-surface screen mesh in the flowing process, sliding the screened liquid dung residues into spiral extrusion at the bottom of the mirror surface screen, and extruding out part of water in the liquid dung residues; the effect of the process for removing suspended substances in the liquid dung is general and mainly depends on the large pores of the mirror surface screen and the spiral extrusion screen, the pores of the current domestic commonly-used screen are 0.75-1mm, but the treatment capacity of the liquid dung is large, and the process belongs to extensive solid-liquid separation.
The effluent treatment effect that exists among the current separation technique before the liquid dung to big-and-middle-sized milk cow plant at home and abroad is poor, investment fortune dimension expense is high, the fault rate is higher, the complicated, the low scheduling problem of handling capacity of technology, specially propose the utility model discloses it is very much better.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-efficient solid-liquid separation who gets rid of suspended solid-liquid separation equipment who gets rid of thing in liquid dung, it can solve the treatment effect that exists among the current livestock and poultry farm natural pond liquid pretreatment technology poor, the investment is big, operation and maintenance cost are high, the raw materials requires height, the fault rate is higher, degree of automation is low, be difficult to the problem of stable high-efficient production.
The utility model discloses a another aim at make solid-liquid separation's flow simple, degree of automation is high, the treatment effect is good, fortune dimension and investment cost are low to can realize stable high-efficient operation.
In order to realize the purpose, the utility model provides a solid-liquid separation device for efficiently removing suspended matters in liquid dung, which comprises a liquid dung pool and a filtrate pool, wherein the liquid dung pool is internally provided with a liquid dung pool submersible stirrer, a liquid dung pump and a liquid dung pool liquid level sensor, and further comprises a spiral extrusion type solid-liquid separator and an unpowered mirror surface sieve separation device, the liquid dung in the liquid dung pool is sequentially subjected to solid-liquid separation by the spiral extrusion type solid-liquid separator and the unpowered mirror surface sieve separation device along a pipeline, and liquid flows into the filtrate pool;
the unpowered mirror surface screen separation device comprises a water inlet groove, a mirror surface screen, a filtrate collection tank groove, a water outlet, a slag discharge port and an automatic cleaning device, wherein an inlet of the water inlet groove is communicated with the spiral extrusion type solid-liquid separator through a pipeline, filtrate filtered by the spiral extrusion type solid-liquid separator flows into the water inlet groove, an overflow outlet is formed above the water inlet groove, the mirror surface screen is arranged in an inclined mode, the upper end of the mirror surface screen is fixed at the overflow outlet of the water inlet groove, the filtrate in the water inlet groove flows out of the overflow outlet to the upper surface of the mirror surface screen for screening, the mirror surface screen is positioned above the filtrate collection tank groove, the filtrate collection tank groove is positioned at the bottom of the unpowered mirror surface screen separation device, the bottom surface of the filtrate collection tank groove is arranged in an inclined mode, the water outlet is positioned at the lowest position of the bottom surface of the filtrate collection tank, the slag discharge port is positioned at the lower end of the mirror surface screen, and the water outlet is communicated to the filtrate tank through a pipeline; the water spray nozzle of the automatic cleaning device faces the mirror surface sieve, and the automatic cleaning device is provided with a water pipe for water inflow.
Preferably, the fecal sewage pump is electrically connected with the fecal pond liquid level sensor, the fecal sewage pump and the fecal pond liquid level sensor are automatically controlled to run in a combined mode through a PLC (programmable logic controller) automatic control program, and the fecal sewage pump is automatically started and stopped according to the liquid level condition in the fecal pond; the excrement pump with excrement pond dive mixer electricity is connected, excrement pump with excrement pond dive mixer carries out automatic antithetical couplet accuse through PLC automatic control procedure and opens and stop, excrement pond dive mixer basis excrement pump opens and stops and open and stop.
Preferably, the septic tank is circular or octagonal, and the stirring of the submersible mixer of the septic tank enables the concentration of biogas slurry in the septic tank to be controlled within 0.5%.
Further, the spiral extrusion type solid-liquid separator comprises a water inlet pipe, an overflow pipe, a feeding box, an extrusion screw machine, a slag outlet and a water outlet, wherein the feeding box is communicated with the extrusion screw machine, the slag outlet is arranged on the side surface of the extrusion screw machine, the water outlet is arranged at the bottom of the extrusion screw machine, the water outlet is communicated with the unpowered mirror surface sieve separation device through a pipeline, the top of the feeding box is provided with an overflow port, the overflow port is connected with one end of the overflow pipe, and the other end of the overflow pipe is communicated with the fecal pond; one end of the water inlet pipe is connected with the feeding box, and the other end of the water inlet pipe is connected with the excrement pump.
Preferably, the extrusion screw machine is electrically connected with the fecal sewage pump, the extrusion screw machine and the fecal sewage pump are automatically controlled to start and stop through a PIC single chip microcomputer program, and the extrusion screw machine starts and stops according to the start and stop of the fecal sewage pump.
Furtherly, be equipped with filtrate pump, filtrate tank dive mixer and filtrate tank level sensor in the filtrate tank, the filtrate pump is connected with filtrate tank level sensor electricity, the filtrate pump carries out automatic antithetical couplet accuse operation with filtrate tank level sensor through PLC automatic control procedure, according to the liquid level condition realizes in the filtrate tank the automatic start-stop of filtrate pump.
Preferably, the filtrating pool is circular or octagonal, the filtrating pool liquid level sensor arranged at the top of the filtrating pool is a radar liquid level sensor and used for monitoring the liquid level in the filtrating pool in real time.
Further, the arrangement mode of the mirror surface screen is that the pores are arranged perpendicular to the water flow direction.
Preferably, the screen mesh of the mirror screen is 0.5mm.
Preferably, the screen mesh of the extrusion screw machine is 1.0mm
Compared with the prior art, the solid-liquid separation device for efficiently removing suspended matters in liquid dung adopts the combination of the spiral extrusion type solid-liquid separator and the unpowered mirror surface sieve separation device, so that the practicability and stability of solid-liquid separation are realized, the removal rate of the suspended matters in the liquid dung is high, the effluent quality is good, and the operation load and the operation cost of a sewage treatment unit are reduced; according to the characteristics of the liquid dung, the power extrusion part of the traditional power type mirror surface screen type solid-liquid separator is optimized to be unpowered, so that the operation cost is reduced, the treatment capacity is improved, and the electric load and the failure rate are reduced on the premise of ensuring the water outlet effect; the excrement pump and the liquid level sensor of the excrement pool are automatically connected, the filter liquor pump and the liquid level sensor of the filter liquor pool are automatically connected, the solid-liquid separation device for efficiently removing suspended matters in the excrement is started and stopped by one key, the automation degree is high, and the process is simple, convenient to operate, safe and stable. The arrangement mode of the improved mirror surface screen is that the holes are arranged in a direction vertical to the water flow, the removal rate of suspended matters is greater than 7.51 percentage points before improvement, and the separation effect after improvement is obviously better than that before improvement.
Drawings
Fig. 1 is a schematic structural diagram of the solid-liquid separation device for efficiently removing suspended matters in liquid dung.
Fig. 2 is a process flow diagram of the solid-liquid separation for efficiently removing suspended matters in the liquid manure in the embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of a screen mesh arrangement of the improved front mirror surface screen according to embodiment 2 of the present invention.
Fig. 4 is a schematic diagram of a screen mesh arrangement of the improved mirror surface screen according to embodiment 2 of the present invention.
Description of the main reference numerals:
1. the device comprises a liquid dung pool, 1-1 part of the liquid dung pool, a liquid dung pump, 1-2 parts of the liquid dung pool submersible stirrer, 1-3 parts of the liquid dung pool liquid level sensor, 2 parts of a spiral extrusion type solid-liquid separator, 2-1 parts of a feeding box, 2-2 parts of an extrusion spiral machine, 2-3 parts of a slag outlet, 2-4 parts of a water outlet, 2-5 parts of a water inlet pipe, 2-6 parts of an overflow pipe, a 3-unpowered mirror surface screen separation device, 3-1 parts of a water inlet tank, 3-2 parts of a mirror surface screen, 3-3 parts of a filtrate collection tank, 3-4 parts of a water outlet, 3-5 parts of an automatic cleaning device, 3-6 parts of a slag outlet, 4-1 parts of a filtrate pool, 4-1 parts of a filtrate pump, 4-2 parts of a filtrate pool submersible stirrer, 4-3 parts of a filtrate pool liquid level sensor, 4-4 parts of a filtrate pipe.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, according to the utility model relates to an embodiment's high efficiency is got rid of solid-liquid separation equipment of thing in liquid dung, including spiral extrusion formula solid-liquid separation equipment 2 and unpowered mirror surface sieve separator 3, wherein spiral extrusion formula solid-liquid separation equipment 2's delivery port 2-4 and unpowered mirror surface sieve separator 3's inlet tube 2-5 are linked together through the pipeline, liquid dung in the liquid dung pond 1 loops through spiral extrusion formula solid-liquid separation equipment 2 and unpowered mirror surface sieve separator 3, realize solid-liquid separation, the high efficiency is stabilized and is got rid of liquid dung suspended solid in the liquid dung pond 1, the flow is simple, degree of automation is high, the treatment effect is good, fortune dimension and investment cost are low, and can realize stable high-efficient operation.
Collecting liquid dung of a large-scale farm into a liquid dung pool 1, wherein a liquid dung pool submersible stirrer 1-2, a liquid dung pump 1-1 and a liquid dung pool liquid level sensor 1-3 are arranged in the liquid dung pool 1, and the liquid dung is fully stirred and uniformly mixed by the liquid dung pool submersible stirrer 1-2; the excrement pump 1-1 is electrically connected with the liquid level sensor 1-3 of the excrement pool, the mixed excrement water is automatically controlled by the excrement pump 1-1 and the liquid level sensor 1-3 of the excrement pool, the excrement pump 1-1 is automatically started and stopped according to the liquid level condition in the excrement pool 1, when the liquid level sensor 1-3 of the excrement pool obtains that the liquid level in the excrement pool 1 is lower, the excrement pump 1-1 in the excrement pool 1 is stopped, when the liquid level in the excrement pool 1 obtained by the liquid level sensor 1-3 of the excrement pool is increased, the excrement pump 1-1 in the excrement pool 1 is started, and the excrement pump 1-1 conveys the excrement water to the spiral extrusion type solid-liquid separator 2.
The spiral extrusion type solid-liquid separator 2 comprises a water inlet pipe 2-5, an overflow pipe 2-6, a feeding box 2-1, an extrusion screw machine 2-2, a slag outlet 2-3 and a water outlet 2-4, wherein the slag outlet 2-3 is arranged on one side of the extrusion screw machine 2-2, the water outlet 2-4 is arranged at the bottom of the extrusion screw machine 2-2, one end of the water inlet pipe 2-5 of the spiral extrusion type solid-liquid separator 2 is connected to a feces pump 1-1, the other end of the water inlet pipe is connected to the feeding box 2-1, the feces pump 1-1 conveys feces water into the feeding box 2-1 of the spiral extrusion type solid-liquid separator 2 through the water inlet pipe 2-5, the top of the feeding box 2-1 of the spiral extrusion type solid-liquid separator 2 is provided with an overflow port, the overflow port is connected to one end of the overflow pipe 2-6, the other end of the overflow pipe 2-6 is communicated to the feces pool 1, and if too much feces water enters the feeding box 2-1, the excess feces water flows back to the feces pool 1 through the overflow pipe 2-6. The feeding box 2-1 is communicated with the extrusion screw machine 2-2, liquid dung flows into the extrusion screw machine 2-2 from the bottom of the feeding box 2-1 to be extruded, extruded primary liquid dung is discharged from a slag outlet 2-3, a liquid phase is filtered out through a screen in the screw extruder, and filtered primary filter liquor is discharged to the unpowered mirror surface screen separation device 3 through a water outlet 2-4.
The unpowered mirror surface screen separation device 3 comprises a water inlet groove 3-1, a mirror surface screen 3-2, a filtrate collection tank groove 3-3, a water outlet 3-4, a residue discharge port 3-6 and an automatic cleaning device 3-5, wherein an inlet of the water inlet groove 3-1 is communicated with a water outlet 2-4 of a spiral extrusion type solid-liquid separator 2 through a pipeline, primary filtrate filtered by the spiral extrusion type solid-liquid separator 2 flows into the water inlet groove 3-1, an overflow outlet is formed in the side surface above the water inlet groove 3-1, the mirror surface screen 3-2 is obliquely arranged, the upper end of the mirror surface screen 3-2 is fixed at the overflow outlet of the water inlet groove 3-1, primary filtrate in the water inlet groove 3-1 overflows to the upper surface of the mirror surface screen 3-2 for screening, the filtrate collection tank 3-3 is located at the bottom of the unpowered mirror surface screen separation device 3, the bottom surface of the filtrate collection tank 3-3 is obliquely arranged, a water outlet 3-4 is located at the lowest position of the bottom surface of the filtrate collection tank 3-3, secondary filtrate collection tank 3-2 below the mirror surface screen 3-3 is collected to the residue discharge port 3-3, filter residue discharge tank 3-3, filter residue is discharged from the lower end of the secondary filter screen 3-3 after passing through the lower end of the second-2 screen 3-3. The water spray opening of the automatic cleaning device 3-5 of the unpowered mirror surface screen separation device 3 faces the mirror surface screen 3-2, the mirror surface screen 3-2 can be cleaned automatically at regular time, and the automatic cleaning device 3-5 is provided with a water pipe for water inlet. The unpowered mirror surface screen separation device 3 is improved into a unpowered device, and power control is not needed.
A filtrate pump 4-1, a filtrate tank submersible stirrer 4-2 and a filtrate tank liquid level sensor 4-3 are arranged in the filtrate tank 4, secondary filtrate enters the filtrate tank submersible stirrer 4-2 in the filtrate tank 4 and is uniformly stirred, and the uniformly mixed secondary filtrate is conveyed to the sewage treatment unit by the filtrate pump 4-1 for further treatment. The filtrate pump 4-1 is electrically connected with the filtrate tank liquid level sensor 4-3, the mixed secondary filtrate is automatically controlled by the filtrate pump 4-1 and the filtrate tank liquid level sensor 4-3, the filtrate pump 4-1 is automatically started and stopped according to the liquid level condition in the filtrate tank 4, when the filtrate tank liquid level sensor 4-3 obtains that the liquid level in the filtrate tank 4 is lower, the filtrate pump 4-1 in the filtrate tank 4 is stopped, and when the filtrate tank liquid level sensor 4-3 obtains that the liquid level in the filtrate tank is raised, the filtrate pump 4-1 in the filtrate tank 4 is started. The filtrate pump 4-1 is in linkage operation with the spiral extrusion type solid-liquid separator 2 through a PLC automatic control program, the spiral extrusion type solid-liquid separator 2 is started 30s before the filtrate pump 4-1 is started, and the spiral extrusion type solid-liquid separator 2 is stopped 60s after the filtrate pump 4-1 is stopped.
The solid-liquid separation device for efficiently removing suspended matters in the liquid dung adopts the combination of the spiral extrusion type solid-liquid separator 2 and the unpowered mirror surface screen separation device 3, so that the practicability and stability of solid-liquid separation are realized, the removal rate of the suspended matters in the liquid dung is high, the water outlet quality is good, and the operation load and the operation cost of a sewage treatment unit are reduced; according to the characteristics of the liquid dung, the power extrusion part of the traditional power type mirror surface screen type solid-liquid separator is optimized into unpowered separation, so that the operation cost is reduced, the treatment capacity is improved, and the electric load and the fault rate are reduced on the premise of ensuring the water outlet effect; the automatic joint control design of the fecal sewage pump 1-1 and the liquid level sensor 1-3 of the fecal sewage tank and the automatic joint control design of the filtrate pump 4-1 and the liquid level sensor 4-3 of the filtrate tank realize the one-key start and stop of the whole set of solid-liquid separation device for efficiently removing suspended matters in the fecal sewage, and the device has the advantages of high automation degree, simple process, convenient operation, safety and stability.
Embodiment 1, solid-liquid separation equipment that suspension in high-efficient removal liquid manure that milk cow plant arranged
As shown in figure 1-2, the liquid dung of the cow farm is collected into a liquid dung pool 1, the liquid dung pool 1 is of a reinforced concrete structure, the pool type is circular or octagonal, the liquid dung is uniformly mixed during stirring, no dead angle exists during stirring, the depth of the pool is 5 meters, and the liquid dung in the pool is ensured to be in the poolThe effective water depth is increased, the retention time is longer than 4 hours, and the continuous and stable operation of subsequent process equipment is ensured. 1 septic tank submersible mixer 1-2 is arranged in the septic tank 1 to fully and uniformly mix the liquid dung, so that the concentration gradient of the biogas slurry in the septic tank 1 is within 0.5 percent; the submersible mixer 1-2 of the dung pool is a mixed submersible mixer, and the model is as follows: MA2.5/8-400/3-740 (power 2.5KW, rotation speed 740r/min, blade diameter 400mm, axial thrust 800N), and features compact structure, simple installation, operation and maintenance, reasonable hydraulic structure of impeller, and back swept blade with self-cleaning function, anti-impurity, anti-winding and anti-blocking functions. A liquid level sensor 1-3 of the dung pool arranged at the top of the dung pool 1 is a radar liquid level sensor, monitors the liquid level in the dung pool 1 in real time, and automatically controls the dung pool 1-1 to operate in a linkage manner through a PLC automatic control program so as to ensure that the dung pool 1-1 automatically operates according to the high-start and low-stop of the liquid level condition in the dung pool 1; the submersible mixer 1-2 of the septic tank is electrically connected with the septic pump 1-1, the submersible mixer 1-2 of the septic tank is started and stopped along with the start and stop of the septic pump 1-1, and the start and stop are realized by a PLC (Programmable Logic Controller) automatic control program: starting the submersible mixer 1-2 of the dung pool 5min before starting the dung pump 1-1, stopping the submersible mixer 1-2 of the dung pool after stopping the dung pump 1-1, and ensuring that dung in the dung pool 1 is fully mixed and the concentration of the dung is relatively stable when starting the dung pump 1-1. The uniformly mixed liquid dung is conveyed into a feeding box 2-1 of a spiral extrusion type solid-liquid separator 2 through a liquid dung pump 1-1; the fecal sewage pump 1-1 adopts a submersible type sewage pump, and the type is as follows: 80QW40-10-2.2 (flow rate 40 m) 3 H, lift 10m, power 2.2 KW), characteristics: the impeller is blocked by a large-channel single-blade pit, the pit is blocked and anti-winding is performed, and the blade is attached with a hard alloy cutter head, so that large-particle and long-fiber sundries can be cut and torn.
An overflow port is arranged at the top of a feeding box 2-1 of the spiral extrusion type solid-liquid separator 2, redundant liquid dung flows back to a liquid dung pool 1 through an overflow pipe 2-6 so as to ensure the continuous and stable operation of the whole set of system, the extrusion spiral machine 2-2 realizes linkage control with a front-end liquid dung pump 1-1 through a PIC single chip microcomputer program (PIC: programmable Interrupt Controller, programmable Interrupt Controller), the liquid dung pump 1-1 is started for 30s, and the overlapped spiral extrusion type solid-liquid separator 2 is started through signal transmission; after the manure pump 1-1 is stopped for 1min, the spiral extrusion type solid-liquid separator 2 is stopped. The liquid dung flows into the extrusion screw machine 2-2 from the bottom of the feeding box 2-1 to be extruded, the extruded first-stage liquid dung is discharged from the slag outlet 2-3, the water phase is filtered out by a screen in the screw extruder, and the filtered first-stage filtrate is discharged to the improved unpowered mirror surface screen separation device 3 through the water outlet 2-4.
The primary filtrate is discharged into a water inlet groove 3-1 of an improved unpowered mirror surface screen separation device 3 through a water outlet 2-4, and overflows through the water inlet groove 3-1 to be uniformly distributed on the screen surface of an inclined mirror surface screen 3-2, because the screen mesh of the mirror surface screen 3-2 has small and smooth surface clearance and large back clearance, the drainage is smooth and not easy to block, most solid substances are intercepted, meanwhile, under the action of hydraulic power, secondary excrement slag of the solid substances is pushed to the lower end of the mirror surface screen 3-2 to be discharged in time, and the filtered secondary filtrate is filtered out from the screen mesh gap of the mirror surface screen 3-2 to the bottom filtrate collection tank 3-3 and is discharged through a pipeline. The unpowered mirror surface screen separation device 3 has the advantages that the main machine body does not need a power supply and is suitable for continuous operation, and the whole machine is made of a full stainless steel material. The improved unpowered mirror surface screening separation device 3 is a unpowered device, control is not needed, an automatic flushing system is connected into a tap water pipe and is subjected to linkage control through PIC, and when the whole system runs, the automatic flushing device is started and stopped at fixed time to ensure the treatment effect.
The filtrate tank 4 is of a reinforced concrete structure, the shape of the filtrate tank 4 is circular or octagonal, the filtrate tank 4 is built with the dung tank 1 for collecting dung, the depth of the filter tank is 5 meters, the effective water depth in the filter tank is ensured, the retention time is more than 4 hours, and the continuous and stable operation of subsequent process equipment is ensured. 1 filtrate pond dive mixer 4-2 has been set up in filtrate pond 4 and has been carried out the intensive mixing to the second grade filtrating, and filtrate pond dive mixer 4-2 adopts mixed type dive agitator, model: MA2.5/8-400/3-740 (power 2.5KW, rotating speed 740r/min, blade diameter 400mm, axial thrust 800N), and is characterized in that: the MA type submersible stirrer has compact structure, convenient and simple installation, operation and maintenance, reasonable impeller hydraulic structure, and swept-back blade with self-cleaning function, can prevent impurities, winding and blockage; and (4) conveying the uniformly mixed secondary filtrate to a sewage treatment unit for further treatment through a filtrate pump 4-1. Filtrate tank liquid level sensor arranged at top of filtrate tank 4And 4-3 is a radar liquid level sensor which monitors the liquid level in the filtrate tank 4 in real time and automatically controls the automatic linked operation with the filtrate pump 4-1 through a PLC automatic control program so as to ensure that the filtrate pump 4-1 stops and automatically operates according to the high-start and low-stop of the liquid level condition in the tank. The filtrate pump 4-1 adopts a submersible sewage pump, and the type is as follows: 80QW40-10-2.2 (flow rate 40 m) 3 H, lift 10m, power 2.2 KW), characteristics: the impeller is blocked by a large-channel single-blade pit, the pit is blocked and anti-winding is performed, and the blade is attached with a hard alloy cutter head, so that large-particle and long-fiber sundries can be cut and torn.
Example 2 mirror surface sieve design of unpowered mirror surface sieve separation device 3 in solid-liquid separation device for efficiently removing suspended matters in liquid dung
As shown in fig. 3, the conventional mirror surface screen is arranged in such a manner that the holes are along the water flow direction, and the liquid dung contains a large amount of fine fibers, so that the arrangement manner makes the liquid dung pass through the mirror surface screen to easily cause unsmooth water outlet, and the quality of the water outlet separated from the liquid dung is poor and unstable.
As shown in fig. 4, in this embodiment, the arrangement mode of the improved mirror surface sieve is that the pores are arranged perpendicular to the water flow direction, when the primary filtrate overflows through the water inlet tank 3-1 and is uniformly distributed on the screen surface of the inclined mirror surface sieve, because the surface gap of the screen of the mirror surface sieve is small and smooth, and the back gap is large, most of the solid substances are intercepted, and meanwhile, under the hydraulic action, the solid substances are pushed to the lower end of the mirror surface sieve to be discharged in time, and the filtered secondary filtrate is filtered out from the screen gap of the mirror surface sieve to the bottom filtrate collecting tank 3-3 and is discharged through a pipeline.
As shown in table 1, the suspended matter concentration before and after the improvement of the unpowered mirror surface sieve separation device 3 is 3.06% of the suspended matter concentration (TS) of the first-stage filtrate in the water inlet tank 3-1 of the unpowered mirror surface sieve separation device 3 before the improvement, 1.75% of the suspended matter concentration TS of the second-stage filtrate after the separation, and 3.06% =42.81% of the suspended matter removal rate. After improvement, the concentration (TS) of suspended matters in the primary filtrate in the water inlet tank 3-1 of the unpowered mirror surface sieve separation device 3 is 3.04%, the concentration (TS) of suspended matters in the secondary filtrate after separation is 1.51%, and the removal rate of suspended matters is (3.04-1.51)/3.06 =50.32%. The removal rate of the suspended matters after the improvement is greater than 7.51 percentage points before the improvement, and the separation effect after the improvement is obviously better than that before the improvement.
TABLE 1 suspended matter concentration before and after improvement of unpowered mirror surface sieving separation device
Example 3 Screen mesh design of spiral extrusion type solid-liquid separator 2 and unpowered mirror surface sieve separation device in solid-liquid separation device for efficiently removing suspended matters in liquid dung
The sizes of the screen pores of the spiral extrusion type solid-liquid separator 2 and the unpowered mirror surface screen separation device 3 are particularly important, and whether the screen pores are properly selected can directly influence the liquid dung separation effect and increase the treatment difficulty of a rear-section sewage treatment unit; in the implementation process, the experiment is carried out for a plurality of times on the screen pores with different sizes, and the experimental data are shown in tables 2 and 3:
the comparison of the experimental data in table 1 and table 2 shows that:
1. on the premise of determining that the screen hole of the spiral extrusion type solid-liquid separator is 0.75mm, the screen hole of the unpowered mirror surface screen separation device 3 selects 0.07 percentage point larger concentration of 0.5mm effluent suspended matters than 0.25mm, and the treatment capacity is 4.1m larger 3 H, the treatment capacity is increased by 26.45 percent;
2. on the premise of determining that the screen mesh pore of the spiral extrusion type solid-liquid separator 2 is 1.0mm, the screen mesh pore of the unpowered mirror surface screen separation device 3 selects 0.5mm to be 0.05 percentage point larger than 0.25mm of effluent suspended matter concentration and treatment capacityBig 8.3m 3 The treatment capacity is 51.23 percent more;
3. on the premise of determining that the screen mesh aperture of the unpowered mirror surface screen separation device 3 is 0.5mm, the screen mesh aperture of the screw extrusion type solid-liquid separator 2 selects the effluent suspended matter with the concentration of 1.0mm being 0.01 percentage point less than that of 0.75mm and the processing capacity being 4.9m greater 3 The treatment capacity is 25 percent more;
4. on the premise of determining that the screen mesh aperture of the unpowered mirror surface screen separation device 3 is 0.25mm, the screen mesh aperture of the spiral extrusion type solid-liquid separator 2 selects the effluent suspended matter with the concentration of 1.0mm being 0.01 percentage point larger than that of 0.75mm and the treatment capacity being 0.7m larger than that of 0.7 mm 3 The treatment capacity is increased by 4.52 percent per hour.
The data analysis shows that: when the screen mesh of the spiral extrusion type solid-liquid separator 2 is selected to be 1.0mm and the screen mesh of the unpowered mirror surface screen separation device 3 is selected to be 0.5mm, the treated water quantity is highest, and the effluent quality is better; therefore, in the embodiment, the screen pore of the spiral extrusion type solid-liquid separator 2 is selected to be 1.0mm, and the screen pore of the unpowered mirror surface screen separation device 3 is selected to be 0.5mm, which is the optimal screen pore scheme of the solid-liquid separation device for efficiently removing suspended matters in liquid dung.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A solid-liquid separation device for efficiently removing suspended matters in liquid dung comprises a liquid dung pool and a filtrate pool, wherein a liquid dung pool submersible stirrer, a liquid dung pump and a liquid dung pool liquid level sensor are arranged in the liquid dung pool;
the unpowered mirror surface screen separation device comprises a water inlet groove, a mirror surface screen, a filtrate collection tank groove, a water outlet, a slag discharge port and an automatic cleaning device, wherein an inlet of the water inlet groove is communicated with the spiral extrusion type solid-liquid separator through a pipeline, filtrate filtered by the spiral extrusion type solid-liquid separator flows into the water inlet groove, an overflow outlet is formed above the water inlet groove, the mirror surface screen is arranged in an inclined mode, the upper end of the mirror surface screen is fixed at the overflow outlet of the water inlet groove, the filtrate in the water inlet groove flows out of the overflow outlet to the upper surface of the mirror surface screen for screening, the mirror surface screen is positioned above the filtrate collection tank groove, the filtrate collection tank groove is positioned at the bottom of the unpowered mirror surface screen separation device, the bottom surface of the filtrate collection tank groove is arranged in an inclined mode, the water outlet is positioned at the lowest position of the bottom surface of the filtrate collection tank, the slag discharge port is positioned at the lower end of the mirror surface screen, and the water outlet is communicated to the filtrate tank through a pipeline; the water spray nozzle of the automatic cleaning device faces the mirror surface sieve, and the automatic cleaning device is provided with a water pipe for water inflow.
2. The solid-liquid separation device for efficiently removing suspended matters in liquid dung according to claim 1, wherein the liquid dung pump is electrically connected with the liquid dung pool liquid level sensor, the liquid dung pump and the liquid dung pool liquid level sensor are automatically controlled by a PLC (programmable logic controller) automatic control program to be operated in an integrated manner, and the liquid dung pump is automatically started and stopped according to the liquid level condition in the liquid dung pool; the excrement pump with excrement pond dive mixer electricity is connected, excrement pump with excrement pond dive mixer carries out automatic antithetical couplet accuse through PLC automatic control procedure and opens and stop, excrement pond dive mixer basis excrement pump opens and stops and open and stop.
3. The apparatus for separating solid from liquid in order to remove suspended matters in liquid dung with high efficiency as claimed in claim 2, wherein the liquid dung pool is circular or octagonal, and the submerged mixer in the liquid dung pool stirs to control the concentration of the liquid dung in the liquid dung pool within 0.5%.
4. The solid-liquid separation device for efficiently removing suspended matters in liquid dung according to claim 1, wherein the spiral extrusion type solid-liquid separation device comprises a water inlet pipe, an overflow pipe, a feeding box, an extrusion screw, a slag outlet and a water outlet, the feeding box is communicated with the extrusion screw, the slag outlet is arranged on the side surface of the extrusion screw, the water outlet is arranged at the bottom of the extrusion screw, the water outlet is communicated with the unpowered mirror surface sieve separation device through a pipeline, the top of the feeding box is provided with the overflow port, the overflow port is connected with one end of the overflow pipe, and the other end of the overflow pipe is communicated with the liquid dung pool; one end of the water inlet pipe is connected with the feeding box, and the other end of the water inlet pipe is connected with the excrement pump.
5. The solid-liquid separation device for efficiently removing suspended matters in liquid dung according to claim 4, wherein the extrusion screw machine is electrically connected with the liquid dung pump, the extrusion screw machine is automatically controlled to be started and stopped by a PIC single chip microcomputer program and the liquid dung pump, and the extrusion screw machine is started and stopped according to the start and stop of the liquid dung pump.
6. The solid-liquid separation device for efficiently removing suspended matters in liquid dung according to claim 1, wherein a filtrate pump, a filtrate tank submersible mixer and a filtrate tank liquid level sensor are arranged in the filtrate tank, the filtrate pump is electrically connected with the filtrate tank liquid level sensor, the filtrate pump and the filtrate tank liquid level sensor are automatically controlled and operated in an integrated manner through a PLC (programmable logic controller) automatic control program, and the filtrate pump is automatically started and stopped according to the liquid level condition in the filtrate tank.
7. The solid-liquid separation device for removing suspended matters in liquid dung with high efficiency as claimed in claim 6, wherein the filtrate tank is circular or octagonal, and the filtrate tank liquid level sensor arranged at the top of the filtrate tank is a radar liquid level sensor for monitoring the liquid level in the filtrate tank in real time.
8. The solid-liquid separator for removing suspended matters in liquid dung with high efficiency as set forth in claim 1, wherein the mirror surface sieve is arranged in such a manner that the apertures are arranged perpendicular to the direction of the water flow.
9. The solid-liquid separator for removing suspended matters in liquid dung with high efficiency as set forth in claim 1, wherein the screen mesh of the mirror screen is 0.5mm.
10. The solid-liquid separator for removing suspended matters in liquid dung with high efficiency according to claim 4, wherein the screen hole of the extrusion screw is 1.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221695651.3U CN218188416U (en) | 2022-07-01 | 2022-07-01 | Solid-liquid separation device for efficiently removing suspended matters in liquid dung |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221695651.3U CN218188416U (en) | 2022-07-01 | 2022-07-01 | Solid-liquid separation device for efficiently removing suspended matters in liquid dung |
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| CN218188416U true CN218188416U (en) | 2023-01-03 |
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| CN202221695651.3U Active CN218188416U (en) | 2022-07-01 | 2022-07-01 | Solid-liquid separation device for efficiently removing suspended matters in liquid dung |
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| CN (1) | CN218188416U (en) |
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