CN110410535B

CN110410535B - Reversing water valve and sewage treatment system based on photocatalysis

Info

Publication number: CN110410535B
Application number: CN201910685424.9A
Authority: CN
Inventors: 李子喜
Original assignee: Chongqing Yixi Brand Planning Co Ltd
Current assignee: Chongqing Yixi Brand Planning Co Ltd
Priority date: 2019-07-27
Filing date: 2019-07-27
Publication date: 2021-04-09
Anticipated expiration: 2039-07-27
Also published as: CN110410535A

Abstract

The invention discloses a reversing water valve and a sewage treatment system based on photocatalysis, wherein the sewage treatment system comprises: the reversing water valve is used for being connected in series with a sewage drainage pipe, and one reversing water valve is selected to connect the sewage with the sedimentation tank and the next reversing water valve; the sedimentation tank is used for storing the sewage, and standing and settling the sewage; the stop valve is used for controlling the connection and disconnection of a pipeline between the supernatant of the sedimentation tank and the inlet of the first water pump; a water level gauge for detecting the water level in the sedimentation tank; the outlet of the first water pump is communicated with the inlet of the filter, so that supernatant liquid precipitated in the sedimentation tank is pumped to the filter; the filter is used for filtering suspended solids or large-particle impurities in the water; the water catalyst is used for irradiating the sewage through ultraviolet light so as to decompose organic matters in the sewage into inorganic matters.

Description

Reversing water valve and sewage treatment system based on photocatalysis

Technical Field

The invention relates to a sewage treatment technology, in particular to a reversing water valve and a sewage treatment system based on photocatalysis.

Background

For some waste water containing a large amount of organic compounds (VOC), aerobic fermentation and anaerobic fermentation are mainly adopted for treatment at present, but the mode occupies a large space, and is obviously not suitable for factories with insufficient sites. With the increasing strengthening of the environmental protection law and the deepening of the environmental protection concept, the overproof organic wastewater can not be directly discharged. Wastewater is treated essentially on its own for enterprises that can build wastewater treatment systems. For enterprises with insufficient sites, the wastewater is often required to be transported to a professional wastewater treatment station for treatment. This obviously results in high processing costs, which results in high manufacturing costs for the enterprise and greatly reduces the market competitiveness of the product. One of the solutions at present is to catalyze organic matters in water by using ultraviolet light to decompose the organic matters into inorganic matters such as carbon dioxide and water, so that the discharge or recycling standard can be met. Such as the technical proposal disclosed in Chinese patents with publication numbers of CN109052550A, CN2410032, CN101654297, etc.

The ultraviolet light catalysis mode can greatly reduce the volume, but the cost is high, and the reason is mainly that the treatment efficiency is low, and the ultraviolet light tube needs to be cleaned regularly, so that the high maintenance cost is caused.

Disclosure of Invention

In view of the above defects in the prior art, the present invention provides a reversing water valve and a sewage treatment system based on photocatalysis, wherein the reversing water valve has a simple structure, is convenient to operate, and has a high sewage treatment system with high sewage efficiency, a good purification effect and a low maintenance cost.

In order to achieve the purpose, the invention provides a reversing water valve which comprises a reversing valve body, a first valve shell and a second valve shell, wherein a reversing ball groove is formed in the reversing valve body, a reversing valve ball and a reversing valve ball are mounted in the reversing ball groove, a reversing through hole and a reversing conducting groove are formed in the reversing valve ball, the reversing through hole penetrates through the reversing valve ball, and the reversing conducting groove is formed in the spherical surface of the reversing valve ball; the reversing valve ball is fixedly assembled with one end of the reversing valve rod, and the other end of the reversing valve rod penetrates through the reversing valve body and is fixedly assembled with the second reversing gear;

the reversing ball groove is also respectively communicated with a reversing access pipe, a reversing exit pipe and a reversing branch pipe, the reversing access pipe and the reversing exit pipe are connected in series on a drain pipe, and the reversing branch pipe is communicated with the sedimentation tank; the second reversing gear is meshed with the latch on one side of the reversing rack to form a gear rack transmission mechanism, and the latch on the other side of the reversing rack is meshed with the first reversing gear to form the gear rack transmission mechanism.

Preferably, the first reversing gear is fixed on the first reversing shaft, the first reversing shaft passes through the first valve casing and then is coaxially assembled with an output shaft of the reversing motor through a connecting shaft, a reversing motor driver is arranged in the reversing motor and used for supplying power to the reversing motor so as to control the running state of the reversing motor, and the control end of the reversing motor driver is in communication connection with the signal end of the PLC.

Preferably, one end of the reversing valve rod penetrates through the first valve shell and then enters the second valve shell to be assembled and fixed with the coding disc, a plurality of coding holes are formed in the coding disc in the circumferential direction, and the edge of the coding disc, which is provided with the coding holes, is installed in the encoder.

Preferably, the top of the reversing rack is fixedly assembled with the reversing limiting plate through a T-shaped connecting strip, the T-shaped connecting strip penetrates through the reversing chute and is assembled with the reversing chute in a sliding mode, the reversing chute is arranged on the reversing guide plate, and the reversing guide plate is fixed to the inner side of the first valve shell.

Preferably, first travel switch, second travel switch are installed respectively with the corresponding department in switching-over rack both ends to first valve casing, the incoming end and the 3V power of first travel switch, second travel switch are electrically conductively connected, connect the control end electrically conductive connection of end and switching-over motor driver, when first travel switch or second travel switch were triggered, the switching-over motor driver obtained signal input, judge that the switching-over motor needs the stall, the switching-over motor driver control switching-over motor stall this moment.

Preferably, the first travel switch and the second travel switch are respectively sleeved with a buffer spring at one end facing the reversing rack.

Preferably, the leakage detection device further comprises a leakage detection assembly, wherein the leakage detection assembly comprises a leakage detection outer ring and a leakage detection shell, a leakage detection induction groove is formed in the leakage detection shell, a microswitch and a leakage detection trigger plate are installed in the leakage detection induction groove, the leakage detection trigger plate is clamped with the leakage detection induction groove and can be assembled in a sliding mode, the leakage detection trigger plate is fixed outside a telescopic pipe, the telescopic pipe is arranged on the driving bag, the interior of the telescopic pipe is communicated with the interior of the driving bag, fluid is filled in the driving bag, and the driving bag is in a sealed state; the extension tube has elasticity, can be extended under the drive of internal fluid and then retracts under the action of the elasticity of the extension tube; in the initial state, the leakage detection trigger plate is not contacted with the trigger end of the microswitch;

a water absorption ring is fixed on the inner side of the driving bag, the water absorption ring is made of a material capable of absorbing water and expanding, and the water absorption ring is sleeved at the joint of each pipeline; the access end of the microswitch is electrically connected with the 3V power supply, the output end of the microswitch is electrically connected with the signal end of the PLC, and when the microswitch is triggered, a 3V voltage signal can be input into the PLC.

The invention also discloses a sewage treatment system based on photocatalysis, which is applied with the reversing water valve.

Preferably, the method further comprises the following steps:

the reversing water valve is used for being connected in series with a sewage drainage pipe, and one reversing water valve is selected to connect the sewage with the sedimentation tank and the next reversing water valve;

the sedimentation tank is used for storing the sewage, and standing and settling the sewage;

the stop valve is used for controlling the connection and disconnection of a pipeline between the supernatant of the sedimentation tank and the inlet of the first water pump;

a water level gauge for detecting the water level in the sedimentation tank;

the outlet of the first water pump is communicated with the inlet of the filter, so that supernatant liquid precipitated in the sedimentation tank is pumped to the filter;

the filter is used for filtering suspended solids or large-particle impurities in the water;

the water catalyst is used for irradiating the sewage through ultraviolet light so as to decompose organic matters in the sewage into inorganic matters.

Preferably, the water filtered by the filter is communicated with a mixing water inlet pipe of the mixing box through a water pipe, the interior of the mixing box is also communicated with a doser, and the doser is used for injecting a catalyst into the mixing box; further comprising:

the mixing box is used for uniformly mixing the catalyst and water, a mixing water outlet pipe of the mixing box is communicated with an inlet of a second water pump, an outlet of the second water pump is communicated with a first catalysis water inlet pipe of the water catalyst, and therefore sewage is connected into the water catalyst;

the reservoir is used for storing the purified water;

the catalytic exhaust pipe of the water catalyst is also communicated with the inlet of the air pump, the inlet of the air pump is also communicated with the outlet of the air supplementing valve, and the inlet of the air supplementing valve is communicated with the atmosphere; the outlet of the air pump is communicated with the inlet of the air catalyst, and the air catalyst irradiates airflow through ultraviolet light;

the inlet of the buffer tank is communicated with the outlet of the gas catalytic converter and is used for storing the purified gas, and a barometer is arranged in the buffer tank and is used for detecting the air pressure in the buffer tank;

the inlet of the reversing air valve is communicated with the outlet of the buffer tank, the first outlet of the reversing air valve is communicated with the inlet of the dehumidifier, the second outlet of the reversing air valve is communicated with the medicine box of the medicine adding device, and the third outlet of the reversing air valve is communicated with the second feeding pipe of the spiral mixer;

the dehumidifier is used for separating water vapor from the airflow, and the separated water is directly returned to the reservoir for recycling;

the adsorption tank is used for adsorbing trace VOC still existing in the air flow;

and the signal end of the PLC is respectively in communication connection with the control end of the reversing water valve, the control end of the stop valve, the control end of the reversing air valve, the signal end of the water level meter and the control end of the air pressure meter.

The invention has the beneficial effects that:

1. the reversing water valve can realize the function of conducting in one way or in two ways, greatly reduces the cost compared with the prior reversing valve, and can meet the requirement of the reversing water valve. In addition, after the leakage detecting assembly is installed, whether water leakage conditions exist at the joints of the pipelines or not can be detected in time, so that leakage is prevented, environmental pollution is avoided, and the manual detection cost can be greatly reduced.

2. The dosing module can adjust the dosing amount according to the flow velocity, has a very simple structure, and therefore, the dosing amount must be monitored and calculated by adopting a traditional sensor and then adjusted, and the cost can be reduced. And be provided with water wheels in the mixing box to stirring effect through water wheels is with medicament and waste water intensive mixing, through adding highly-compressed air during the stirring moreover, makes the air release produce countless little bubble in the twinkling of an eye, with the mixed degree of further increase medicament and waste water, and still plays the effect of aeration, thereby improves waste water treatment efficiency.

3. The differential pressure assembly can automatically detect the differential pressure between the second medicine discharge pipe and the mixed water inlet pipe, so that the air pressure in the medicine adding box and the buffer tank is automatically increased. This ensures that the dosage is substantially proportional to the water flow; on the other hand, the air pressure can be adjusted according to the water flow, so that the afflux amount of the air flow in the water is adjusted, the treatment efficiency is ensured, and the influence on the purification efficiency due to too much or too little mixed amount of the air flow is prevented.

4. According to the water catalyst, the protective cover, the first outer cover and the second outer cover can be automatically cleaned through the cleaning wheel, so that the later manual maintenance cost is greatly reduced, the maintenance frequency is reduced, the working time is prolonged, and the treatment efficiency is increased. In addition, the water catalyst is rotated and mixed by the stirring wheel and injected with high-pressure gas, and gas is released to generate countless fine bubbles and interpenetrate the fine bubbles in water to form a boiling effect, so that the contact time of the wastewater and the ultraviolet light is greatly increased, and the contact uniformity of the wastewater and the ultraviolet light is greatly improved, and the treatment efficiency is greatly improved. And the water catalyst is internally provided with a reflecting layer and a plurality of ultraviolet lamp tubes, so that the water flow speed in the water catalyst can be greatly improved, namely the catalytic efficiency and the treatment efficiency are improved.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention.

Fig. 2-9 are schematic views of the reversing water valve structure of the invention. Wherein, fig. 8 is a structural schematic diagram of the reversing valve ball, and fig. 9 is a structural schematic diagram of the leakage detecting component.

FIGS. 10-16 are schematic views of the medicated module of the present invention, where FIG. 16 is a schematic view of the mixing box configuration.

FIG. 17 is a schematic view of a differential pressure assembly of the present invention.

Fig. 18-23, 25 are schematic views of the water catalyst structure of the present invention.

Fig. 24 is a schematic view of the structure of the stirring wheel of the invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the sewage treatment system of the present embodiment includes:

the sedimentation tank is used for storing the sewage, and standing and settling the sewage so as to separate out precipitable solids in the sewage;

the squeezing machine is used for squeezing the slurry precipitated in the precipitation tank, separating solid from liquid, directly discharging the separated solid, and further processing the solid; the separated waste water is led back to a drain pipe to be continuously used as sewage for treatment;

the stop valve is used for controlling the connection and disconnection of a pipeline between the supernatant of the sedimentation tank and the inlet of the first water pump, and the existing electromagnetic stop valve is directly selected in the embodiment;

a water level gauge for detecting the water level in the sedimentation tank;

the filter is used for filtering suspended solids or large-particle impurities in the water. In the embodiment, a plurality of filter screens with different apertures are arranged in the filter, so that suspended solid or large-particle impurities are intercepted when water flows through the filter, the water filtered by the filter is communicated with a mixing water inlet pipe of the mixing box through a water pipe, the interior of the mixing box is also communicated with a doser, and the doser is used for injecting a catalyst into the mixing box;

the water catalyst is used for irradiating the sewage through ultraviolet light so as to decompose organic matters in the sewage into inorganic matters;

the reservoir is used for storing the purified water;

the catalytic exhaust pipe of the water catalyst is also communicated with the inlet of the air pump, the inlet of the air pump is also communicated with the outlet of an air compensating valve (a pressure compensating valve), and the inlet of the pressure compensating valve is communicated with the atmosphere; the outlet of the air pump is communicated with the inlet of the air catalyst, and the air catalyst irradiates the air flow through ultraviolet light, so that the VOC in the air flow is catalytically decomposed into organic matters;

and the adsorption tank is used for adsorbing trace VOC still existing in the air flow, so that the emission of waste gas at least reaches the standard. In this embodiment, the inside of the adsorption tank is filled with activated carbon, and the VOC in the air flow is adsorbed by the activated carbon.

In this embodiment, the water level meter further includes a PLC, and a signal end of the PLC is in communication connection with a control end of the reversing water valve, a control end of the stop valve, a control end of the reversing air valve, a signal end of the water level meter, and a control end of the air pressure meter, respectively, so that the PLC can acquire signals of the water level meter and the air pressure meter and can control opening and closing of the reversing water valve and the stop valve.

In the initial state, the stop valves corresponding to the sedimentation tanks are closed, and the reversing water valves are respectively communicated with the sedimentation tanks corresponding to the reversing water valves. When the reversing water valve is used, firstly, the reversing water valve closest to sewage is opened, the sewage enters the corresponding sedimentation tank, the direction of the reversing water valve corresponding to the sedimentation tank is switched until the water level detected by the water level meter corresponding to the sedimentation tank reaches a preset threshold value, so that the reversing water valve connects water flow to the next reversing water valve and cuts off the communication of the water flow and the sedimentation tank, and at the moment, the water flow enters the next sedimentation tank and the like in sequence.

Can install turbidity sensor in the sedimentation tank, turbidity sensor's signal end is connected with PLC's signal end communication, when turbidity sensor detects the big threshold value of water turbidity in the sedimentation tank, then open the stop valve, first water pump, make the supernatant pump after the sedimentation in first water pump will the sedimentation tank pump to the filter, the filter filters the back with water and carries to mixing box and catalyst mixture, then pump to the water catalytic converter through the second water pump and catalyze, decompose, water input cistern storage after will handling at last, wait for recycling.

The gas in the water catalyst is pumped to the gas catalyst through the gas pump for catalytic decomposition and then stored in the buffer tank, and when the negative pressure at the inlet of the gas pump reaches a threshold value, the gas supplementing valve is opened to supplement the pressure to the gas catalyst, so that the overload of the gas pump is prevented;

the air pressure meter in the buffer tank monitors the air pressure value in real time, once the air pressure value exceeds a threshold value, the inlet of the reversing air valve is communicated with the first outlet, so that air flow enters the adsorption tank through the dehumidification port of the dehumidifier, and the air flow is directly discharged after being adsorbed by the adsorption tank; the reversing air valve is an electromagnetic reversing valve, and an inlet of the reversing air valve is communicated with one of the first outlet, the second outlet and the third outlet.

Referring to fig. 2 to 9, the reversing water valve comprises a reversing valve body a110, a first valve casing a120 and a second valve casing a130, wherein a reversing ball groove a111 is formed in the reversing valve body a110, a reversing valve ball a530 is installed in the reversing ball groove a111, a reversing through hole a531 and a reversing conducting groove a532 are formed in the reversing valve ball a530, the reversing through hole a531 penetrates through the reversing valve ball a530, and the reversing conducting groove a532 is formed in the spherical surface of the reversing valve ball a 530;

the reversing valve ball A530 is fixedly assembled with one end of the reversing valve rod A520, and the other end of the reversing valve rod A520 penetrates through the reversing valve body A110 and is fixedly assembled with the second reversing gear A430;

the reversing ball groove A111 is also respectively communicated with a reversing access pipe A211, a reversing access pipe A212 and a reversing branch pipe A213, the reversing access pipe A211 and the reversing access pipe A212 are connected in series on a drain pipe, and the reversing branch pipe A213 is communicated with a sedimentation tank;

second reversing gear A430 meshes with the latch of reversing rack A420 one side and forms rack and pinion drive mechanism, the latch of reversing rack A420 opposite side meshes with first reversing gear A410 and forms rack and pinion drive mechanism, first reversing gear A410 is fixed on first reversing shaft A510, first reversing shaft A510 passes through coaxial assembly of connecting axle with the output shaft of reversing motor A330 behind first valve casing A120, reversing motor A330 can drive first reversing shaft A510 and just reverse on the circumference, and reversing motor A330 embeds there is the reversing motor driver, and the reversing motor driver is used for supplying power to the reversing motor to control the running state of reversing motor, the control end of reversing motor driver and PLC's signal end communication are connected. In this embodiment, the commutation motor driver is a stepping motor driver.

One end of the reversing valve rod A520 penetrates through the first valve shell A120 and then enters the second valve shell A130 to be assembled and fixed with the coding disc A340, a plurality of coding holes A341 are formed in the coding disc A340 in the circumferential direction, and the edge, provided with the coding holes A341, of the coding disc A340 is installed in the encoder A320. When the code wheel rotates, the encoder judges the rotation angle of the code wheel, namely the rotation angle of the reversing valve rod A520, by detecting different numbers of code holes A341.

The top of the reversing rack A420 is fixedly assembled with a reversing limit plate A230 through a T-shaped connecting bar A231, the T-shaped connecting bar A231 penetrates through a reversing chute A221 and is assembled with the reversing chute A221 in a sliding mode, the reversing chute A221 is arranged on a reversing guide plate A220, and the reversing guide plate A220 is fixed on the inner side of the first valve shell A110;

first travel switch A311, second travel switch A312 are installed respectively with the corresponding department in switching-over rack A420 both ends to first valve casing A120, the incoming end and the 3V power of first travel switch A311, second travel switch A312 are electrically conductively connected, the control end that connects the end and the switching-over motor driver is electrically conductively connected to make when first travel switch A311 or second travel switch A312 is triggered, the switching-over motor driver obtains signal input, judges that the switching-over motor needs the stall, and the switching-over motor driver control switching-over motor stall this moment.

Preferably, the buffer springs a240 are respectively sleeved on one ends of the first travel switch a311 and the second travel switch a312 facing the reversing rack a420, and the buffer springs a240 are used for buffering the impact force of the reversing rack to the first travel switch a311 or the second travel switch a 312.

Preferably, because each pipeline junction operating mode of switching-over water valve is more complicated, sealing washer (or sealing device) are ageing easily, consequently need set up the special messenger and carry out the periodic overhaul to avoid sewage to reveal, cause the pollution. However, the manual inspection mode is not enough in timeliness, and large manpower input is caused, and the water leakage position is difficult to find by naked eyes sometimes. The applicant designs a leakage detection assembly, which includes a leakage detection outer ring a140 and a leakage detection shell a150, wherein a leakage detection induction groove a151 is formed inside the leakage detection shell a150, a micro switch a250 and a leakage detection trigger plate a550 are installed inside the leakage detection induction groove a151, the leakage detection trigger plate a550 is clamped with the leakage detection induction groove a151 and can be assembled in a sliding manner, the leakage detection trigger plate a550 is fixed outside a telescopic tube a541, the telescopic tube a541 is arranged on a driving bag a540, the interior of the telescopic tube a541 is communicated with the interior of the driving bag a540, the interior of the driving bag a540 is filled with fluid, such as hydraulic oil, gas and the like, and the driving bag a540 is in a sealed state.

The bellows a541 is resilient and can be extended under internal fluid actuation and then retracted under its own resilience. In the initial state, the leakage detecting trigger plate a550 is not in contact with the trigger end of the micro switch a 250.

A water absorbing ring A560 is fixed on the inner side of the driving bag A540, and the water absorbing ring A560 is made of a material capable of absorbing water and expanding, such as water absorbing expansion rubber, water absorbing resin and the like. The water absorbing ring A560 is sleeved at the joint of each pipeline, in this embodiment, the water absorbing ring is sleeved at the assembly position of the reversing inlet pipe A212 and the reversing valve body A110, and of course, the water absorbing ring can also be sleeved at the assembly position of the reversing inlet pipe A211, the reversing branch pipe A213 and the reversing valve body A110.

The access end of the microswitch is electrically connected with the 3V power supply, the output end of the microswitch is electrically connected with the signal end of the PLC, and when the microswitch is triggered, a 3V voltage signal can be input into the PLC.

Once water leaks, the water sucking ring A560 sucks water and expands, so that the driving bag A540 is squeezed, fluid in the driving bag A540 enters the telescopic pipe to drive the telescopic pipe to extend until the leakage detection trigger plate A550 triggers the micro switch A250. At the moment, the microswitch A250 inputs a signal to the PLC, the PLC judges that water leaks from the PLC, and then a manager can be informed of the water leakage through a preset program and equipment.

In the initial state, the reversing water valve is in a state of cutting off the drain pipe, so that the sewage can only enter the corresponding sedimentation tank. After the water level in the sedimentation tank reaches a threshold value, the PLC controls the reversing motor to rotate forwards, so that the first reversing shaft A510 is driven to rotate forwards. The first reversing shaft A510 drives the rack to move through the first reversing gear A410 until the rack triggers the first travel switch A311, at the moment, the reversing motor stops running, the PLC judges that the reversing valve ball A530 is cut off from being communicated with the reversing branch pipe A213 (the reversing conduction groove A532 is not communicated with the reversing branch pipe A213 and the reversing access pipe A211 any longer), the reversing access pipe A211 is communicated with the reversing access pipe A212 through the reversing through hole A531, namely, the reversing water valve at the position is not cut off the drain pipe any longer, and sewage enters the next sedimentation tank. The above steps are repeated until the water level of the last sedimentation tank reaches the threshold value, and the states of different reversing water valves can be adjusted as required to introduce sewage into different sedimentation tanks.

Referring to fig. 10 to 17, the dosing device and the mixing box together form a dosing module, the dosing device includes a dosing box B130, the dosing box B130 is hollow, the top of the dosing box B130 is communicated with one end of a dosing air inlet pipe B232, the other end of the dosing air inlet pipe B232 is communicated with the inside of the buffer tank, the side and the bottom of the inside of the dosing box B130 are respectively communicated with a dosing pipe B231 and one end of a first discharge pipe B221, the other end of the dosing pipe B231 is communicated with an outlet of a medicine pump for conveying a liquid catalyst, the other end of the first discharge pipe B221 is communicated with an inlet of an adjusting valve B120, and the medicine pump is used for pumping an external liquid catalyst into the dosing box B130; a dosing stop valve B411 for controlling the on-off of the first medicine discharge pipe B221 is connected in series with the first medicine discharge pipe B; the dosing stop valve B411 is an electromagnetic valve, and the control end of the dosing stop valve B is in communication connection with the signal end of the PLC.

The regulating valve B120 is fixed on the supporting plate B150, the supporting plate 150 is also fixed with a first side plate B140 and a second side plate B160, a regulating ball groove B121 is arranged in the regulating valve B120, a regulating valve ball B620 is installed in the regulating ball groove B121, a spherical surface diversion groove B622 and a through diversion hole B621 are arranged on the regulating valve ball B620, the spherical surface diversion groove B622 is arranged on one circle of the spherical surface of the regulating valve ball B620, and the through diversion hole B621 penetrates through the regulating valve ball B620;

the spherical guide groove B622 and the adjusting valve ball B620 can communicate the first medicine discharge pipe B221 with the second medicine discharge pipe B222, and only actual communication sections are different, so that the positions of the spherical guide groove B622 and the adjusting valve ball B620 can be adjusted to adjust the communication sections between the first medicine discharge pipe B221 and the second medicine discharge pipe B222, a throttle valve is achieved, and flow can be adjusted.

The first medicine discharge pipe B221 and the second medicine discharge pipe B222 are respectively communicated with the two sides of the adjusting ball groove B121, which are positioned on the adjusting valve ball B620, the second medicine discharge pipe B222 is communicated with the inlet of the one-way valve B412, and the outlet of the one-way valve B412 is communicated with the interior of the mixing box B110;

the adjusting valve ball B620 is fixedly assembled with one end of an adjusting valve rod B582, the other end of the adjusting valve rod B582 penetrates through the adjusting valve B120 and then is fixedly assembled with an adjusting gear B610, the adjusting gear B610 is in meshed transmission with a rack part B561, the rack part B561 is arranged at one end of a piston rod B560, and the other end of the piston rod B560 is installed in an inner cylinder B551 of a piston cylinder B550, sealed with the inner cylinder B551 and assembled in an axial sliding mode; the piston cylinder B550 is fixed on the outer wall of the adjusting valve B120, one end, penetrating out of the inner cylinder B551, of the piston rod B560 is fixedly assembled with one end of the reset pressure spring B570, the other end of the reset pressure spring B570 is fixedly assembled with the second side plate B160, the piston cylinder B550 is further provided with a through air release hole B552, and the air release hole B552 communicates external atmosphere with the inner cylinder B551, so that air in the inner cylinder B551 can be slowly discharged;

the inner cylinder B551 is communicated with an inflating inner cylinder B544 through an inflating pipe B542, the inflating inner cylinder B544 is arranged inside an inflator B540, and the inflating inner cylinder B544 is assembled with one end of an inflating rod B532 in a sealing and axially sliding manner;

the inflating inner cylinder B544 is also communicated with an exhaust port of the air inlet head B541, and the air inlet head B541 is a one-way valve which only allows external air flow to enter the inflating inner cylinder B544; the inflating inner cylinder B544 is also communicated with an inlet of the pressure relief valve B543, and an outlet of the pressure relief valve B543 is communicated with the atmosphere. Therefore, when the air pressure in the inflating inner cylinder B544 is over-high, the pressure can be released through the pressure release valve B543.

The other end of the inflating rod B532 is hinged to one end of the driving connecting rod B531, the other end of the driving connecting rod B531 is eccentrically hinged to the end face of the second dosing shaft B520 (the non-circle center position is hinged), when the second dosing shaft B520 rotates in the circumferential direction, the inflating rod B532 can be driven to axially reciprocate through the driving connecting rod B531, and therefore the inflating function is achieved, and the inflator and the inflating rod of the embodiment can directly adopt an existing air gun for inflating bicycle tires.

The second medicine feeding shaft B520 and the first side plate B140 can be assembled in a circumferential rotating mode, the second medicine feeding shaft B520 is further assembled and fixed with a second medicine feeding belt wheel B312, and the second medicine feeding belt wheel B312 is connected with a first medicine feeding belt wheel B311 through a pressurizing synchronous belt B310 to form a belt transmission mechanism;

the first medicine feeding belt wheel B311 is fixed at one end of the first medicine feeding shaft B510, the other end of the first medicine feeding shaft B510 is arranged in the mixing box B110 and can rotate circumferentially and be assembled in a sealing mode, the mixing inner box B111 is arranged inside the mixing box B110, a water wheel B320 is fixed on the part, in the mixing inner box B11, of the first medicine feeding shaft B510, and the water wheel B320 can rotate circumferentially under the driving of water flow of the mixing inner box.

The two ends of the mixing inner box B111 are respectively communicated with the mixing water inlet pipe B211 and the mixing water outlet pipe B212, one end, loaded into the mixing inner box B111, of the mixing water inlet pipe B211 is provided with an inclined pipe B2111, and the inclined pipe B2111 is used for enabling the water flow direction to be tangent to the circumference of the water wheel B320, so that the water wheel is driven to rotate conveniently.

A first blocking plate B631 and a second blocking plate B632 are further respectively arranged on the part, located between the water wheel and the mixing water outlet pipe B212, of the mixing inner tank B111, and a mixing gap B633 is formed between the first blocking plate B631 and the second blocking plate B632;

the portion of the mixing inner tank B111 located between the water wheel B320 and the mixing water inlet pipe B211 is also communicated with the gas inside the dosing tank B130 through the mixing air inlet pipe B240, thereby enabling the pressurized gas flow to enter the mixing inner tank B111. This kind of design can increase kinetic energy for the rotation of water wheels on the one hand, and on the other hand is gaseous to get into and to release behind the mixed inner box to form innumerable small bubble, in addition the pivoted effect of water wheels makes liquid medicine and sewage intensive mixing, and the design of mixing clearance B633 can form and block, thereby reduces the velocity of flow, makes rivers form the vortex under the stirring of water wheels, and overflows from mixing clearance B633, thereby ensures mixed effect. And the aeration in the mixing inner box also directly replaces the prior aeration process, thereby improving the purification efficiency of the sewage and reducing the volume of the whole equipment.

During the use, in case the flow in the mixed inner box changes, just also mean the input volume of sewage increases, the water wheels rotational speed accelerates this moment, then the continuous axial displacement of drive pump pole inflates the inner cylinder, drive piston rod overcomes the pressure spring elasticity that resets and stretches out after the internal gas pressure of inner cylinder increases, rack part drive adjusting gear B610 rotates, adjusting gear drives the adjusting valve ball through adjusting valve rod B580 and rotates, thereby make direct guiding hole gradually with first row of pencil, second row of pencil intercommunication, first row of pencil this moment, the cross-section of second row of pencil intercommunication grow gradually, the dose that gets into mixed inner box increases gradually, thereby realize the effect of automatically regulated dosing.

When water flow reduces, impeller power reduces, and the gas flow that the pole of so inflating fills the inner cylinder reduces, and the inner cylinder is constantly lost air through disappointing hole B552 in addition to make the pressure spring that resets drive piston rod get into the inner cylinder, also be exactly the adjusting gear reversal, thereby make the cross-section that first row of pencil, second row of pencil communicate diminish gradually, this has just reduced the medicament and has added the volume.

Referring to fig. 17, when the flow rate in the mixing water inlet pipe B increases, the water pressure in the mixing water inlet pipe B and the water pressure in the mixing inner tank also increase, and if the pressure in the second medicine discharge pipe B222 does not change at this time, the actually filled medicine amount is insufficient, so that the subsequent processing is affected. In order to relatively accurately adjust the adding amount of the catalyst, the applicant designs a differential pressure assembly, which comprises a differential pressure housing B710, the interior of the differential pressure housing B710 is divided into two sealed first differential pressure cavities B711 and second differential pressure cavities B712 through a differential pressure partition plate B731, a differential pressure piston B810 is clamped and slidably assembled in the second differential pressure cavity B712, the second differential pressure cavities B712 on two sides of the differential pressure piston B810 are respectively communicated with the second discharge pipe B222 and the mixed water inlet pipe B211, a first magnet block B821 is installed on one end of the differential pressure piston B810 facing the differential pressure partition plate B731, a limiting cylinder B720 is installed on the part of the second differential pressure cavity B712 between the differential pressure piston B810 and the end of the second differential pressure cavity B712, and the limiting cylinder B720 is used for limiting the maximum displacement of the differential pressure piston B810 moving rightwards.

A first pressure spring B861 is arranged on a part between the differential pressure piston B810 and the differential pressure partition plate B731, and the first pressure spring B861 is used for generating elastic force for preventing the differential pressure piston B810 from moving towards the differential pressure partition plate B731; a second magnet block B822 is clamped and slidably assembled in the first differential pressure cavity B711, the second magnet block B822 is assembled and fixed with one end of a differential pressure rod B750, the other end of the differential pressure rod B750 passes through a differential pressure fixing plate B732 and then is assembled and fixed with a differential pressure fixing ring B830, a conductive block B831 is fixed on the differential pressure fixing ring B830, the conductive block B831 is in conductive connection with a second conductive block B852, the conductive block B831 is also in contact with a conductive strip B840 for conduction, and one end of the conductive strip B840 is in conductive connection with a first lead B851; a second pressure spring B862 is sleeved on a part of the differential pressure rod B750, which is located between the differential pressure fixing plate B732 and the second magnet block, and the second pressure spring B862 is used for generating an elastic force for moving the second magnet block to the differential pressure partition plate. The first magnet block and the second magnet block have magnetic force, and the same pole ends of the first magnet block and the second magnet block are opposite, so that mutually repulsive magnetic force is formed.

The first conducting wire B851 is in conductive connection with a first power inlet end of the voltmeter, a second power inlet end of the voltmeter is in conductive connection with the 3V power supply, the second conducting wire B852 is in conductive connection with the 3V power supply after being connected with a3 ohm resistor in series, and a signal end of the voltmeter is in communication connection with a signal end of the PLC.

When the water pressure in the mixed water inlet pipe increases, differential pressure piston can overcome first pressure spring elasticity and move to the differential pressure baffle, thereby overcome second pressure spring elasticity and move to the left through magnetic drive second magnet piece, also make the conducting block slide on the busbar, the resistance between conducting block to the first wire changes this moment (is similar to the slide rheostat), thereby make the magnitude of voltage that the voltmeter detected change, this change and mix in the inlet pipe obtain the water pressure and arrange the intraductal water pressure differential linearity relation with the second, thereby can obtain the conversion mode of differential pressure and magnitude of voltage.

When the voltage value changes, obtain the pressure that second row of pencil needs increase through the conversion mode, then start the air pump and pressurize the buffer tank, until the pressure that increases, until the voltage value resumes the default, the pressure differential of second row of pencil and mixed inlet tube resumes this moment, and the adjustment valve ball rotates and can adjust the injection volume of medicine, and is relatively accurate moreover.

The structure is very simple, and after the air pressure in the buffer tank is increased, the air pressure of subsequent sewage entering is also increased, so that the purpose of adjusting the air flow entering amount according to the sewage flow is realized, and the treatment quality and efficiency can be ensured. And the first differential pressure cavity B711 and the second differential pressure cavity B712 are sealed and divided by the differential pressure partition plate, so that the structure needing to be sealed between the first differential pressure cavity B711 and the second differential pressure cavity B712 is directly removed, and the first differential pressure cavity B711 is ensured not to be filled with water, thereby greatly reducing the cost.

The added medicament in the embodiment is a catalyst commonly used in the ultraviolet light treatment of organic wastewater, and is dissolved into liquid such as potassium permanganate, sodium superoxide, formate and the like through water. Of course, whether the medicament is added or not can be determined according to actual conditions, and if the content of organic matters in the sewage is not high, the sewage can be effectively decomposed by the water catalyst without adding a catalyst.

Referring to fig. 18 to 25, the water catalyst includes a base barrel C120 and an outer barrel C110, the base barrel C120 and the outer barrel C110 are hermetically assembled and fixed through a bottom plate C130, a hollow catalytic cavity C111 is formed inside the outer barrel C110, a protective cover C810 is fixed on the inner wall of the catalytic cavity C111, the protective cover C810 is made of a transparent material, and the inner wall of the outer barrel C110 is a mirror surface and is coated with a reflective material, so that ultraviolet light can be reflected inside the outer barrel C110, thereby increasing the contact time between the ultraviolet light and sewage and improving the catalytic efficiency.

At least one first outer cover C410 and at least one second outer cover C420 are arranged in the catalysis cavity C111, the first outer cover C410 is uniformly distributed along the circumferential direction of the second outer cover C420, and the second outer cover C420 is coaxial with the catalysis cavity C111;

the ultraviolet lamp tube C330 is respectively and hermetically installed in the first outer cover C410 and the second outer cover C420, the first outer cover C410 can rotate circumferentially relative to the ultraviolet lamp tube C330, the top of the catalytic cavity C111 is sealed by the top plate C140, the top plate C140 and the bottom plate C130 are respectively fixed with a first retaining ring C231 and a second retaining ring C232, and the tops of the first outer cover C410 and the second outer cover C420 are respectively installed in the first retaining ring C231 and can be circumferentially and rotatably assembled with the first retaining ring C231;

the bottoms of the first outer cover C410 and the second outer cover C420 respectively pass through the second retaining ring C232 and the bottom plate C130 and then enter between the bottom plate and the first clapboard C150, and the first outer cover C410 and the second outer cover C420 are respectively assembled with the second retaining ring C232 and the bottom plate C130 in a sealing manner and can rotate circumferentially; the first clapboard C150 is fixed in the base barrel C120, and a second clapboard C160 and a closing plate C170 are respectively fixed in the base barrel C120;

the bottom of the ultraviolet lamp tube C330 respectively penetrates through a first outer cover C410 and a second outer cover C420, so that electricity connection is facilitated, a second catalytic gear C612 is fixed on a part, located between the bottom plate C130 and the first partition plate C150, of the first outer cover C410, the second catalytic gear C612 is in meshing transmission with the first catalytic gear C611, the first catalytic gear C611 is fixed at one end of the stirring output shaft C321, the other end of the stirring output shaft C321 penetrates through the second partition plate C160 and then is assembled with the stirring motor C320, and the stirring motor C320 can drive the stirring output shaft to rotate in the circumferential direction;

the portions of the first housings C410 between the bottom plate C130 and the first partition plate C150 are further fixed with stirring belt wheels C620, and the stirring belt wheels C620 are connected by a stirring belt C630 to form a belt transmission mechanism, so that when one of the first housings C410 rotates circumferentially, all the first housings C410 rotate synchronously.

The first outer cover C410 and the second outer cover C420 are made of transparent materials, so that ultraviolet light emitted by the ultraviolet lamp tube can pass through the first outer cover C410 and the second outer cover C420. A stirring wheel C510, an inner cleaning brush C540, an outer cleaning brush C530 and another stirring wheel C510 are sequentially mounted on the outer wall of the first housing C410 from the first retaining ring C231 to the second retaining ring C232 in the axial direction, and the stirring wheel C510 is used for stirring sewage and forms a vortex to ascend along the catalytic cavity;

when the first housing C410 rotates circumferentially in the same direction, the reciprocating screw thread C411 is not synchronously rotated with the inner wall of the protective cover and the outer wall of the second housing due to the resistance of water between the inner wall of the protective cover and the outer wall of the second housing, so that the outer cleaning brush C530 moves axially in the first housing C410 until the end of the reciprocating screw thread C411 is reached, then the outer cleaning brush C530 enters into the other thread groove of the reciprocating screw thread, and the outer cleaning brush C530 moves reversely in the axial direction of the first housing without changing the rotation direction of the first housing C410, so that the reciprocating movement of the outer cleaning brush C530 in the axial direction of the first housing is realized, and the outer cleaning brush C530 rotates circumferentially along with the first housing during the movement. The structure of the reciprocating screw and the outer washing brush C530 in this embodiment directly adopts the structure of the conventional reciprocating lead screw.

Outer cleaning brush C530 is the cam, and its major axis is served and is provided with outer brush hair C531, outer brush hair can respectively with safety cover inner wall, the contact of second outer cover outer wall, scrub (the centre coil in fig. 22-23 is just the rotation orbit of outer brush hair C531) when using first outer cover C410 axis to rotate as the center to constantly wash safety cover inner wall, second outer cover outer wall, prevent scale deposit on safety cover inner wall, the second outer cover outer wall, also greatly reduced the later stage need the manual cleaning brought shut down, manpower input scheduling problem, can guarantee the long-time steady operation of equipment.

The inner cleaning brushes C540 are two and are respectively fixed on two end faces of the outer cleaning brush C530, the inner bristles C541 arranged on the inner side of the inner cleaning brush C540 are attached to the outer wall of the first outer cover C410, and the inner cleaning brush can be driven to clean the outer wall of the first outer cover C410 when the outer cleaning brush C530 rotates, so that scaling is prevented, the problems of production stoppage, labor input and the like caused by manual cleaning in the later period are greatly reduced, and long-time stable operation of equipment can be guaranteed.

During the use, ultraviolet tube circular telegram sends the ultraviolet ray, agitator motor starts to drive first dustcoat circumferential rotation, outer cleaning brush, interior cleaning brush axial reciprocating motion, circumferential rotation on first dustcoat, the stirring wheel forms the several vortex with sewage and upwards flows, thereby can realize the even irradiation to sewage, thereby the decomposition of organic matter accelerates, and reflection of light coating and many ultraviolet tube's design can increase speed moreover, thereby improve purification efficiency, and can guarantee that the water after the processing accords with emission standard.

Preferably, thrust ball bearings C520 are respectively mounted on the end surfaces of the two agitating wheels C510 facing the external cleaning brush C530, wherein a shaft ring of the thrust ball bearing C520 is fixedly assembled with the first housing C410, and a race faces the external cleaning brush C530. When the end face of the inner washing brush C540 is brought into contact with the thrust ball bearing C520, the thrust ball bearing C520 and the agitating wheel C510 are prevented from directly rubbing against each other, and the inner washing brush is prevented from being damaged.

Preferably, the bottom of the catalytic cavity C111 is communicated with one end of a second catalytic water inlet pipe C212, the other end of the second catalytic water inlet pipe C212 is communicated with an outlet of a spiral mixer C310, a first feed pipe of the spiral mixer C310 is communicated with a first catalytic water inlet pipe C211, and a second feed pipe is communicated with a third outlet of the reversing air valve, so that in the spiral mixer C310, sewage is mixed with high-pressure air flow and then enters the catalytic cavity C111, the air pressure is suddenly reduced after entering the catalytic cavity C111, gas is separated out from the sewage to form fine bubbles of the sewage, and the bubbles can rise in the catalytic cavity C111, so that the sewage can be uniformly mixed and irradiated by ultraviolet light, and the treatment efficiency can be increased.

The top of the catalysis cavity C111 is communicated with one end of the catalysis drain pipe C221, and the other end of the catalysis drain pipe C221 is connected into the reservoir, so that water in the catalysis cavity is discharged in an overflow mode, the staying time of the water in the catalysis cavity can be ensured, and the purification efficiency is ensured. A catalytic exhaust pipe C222 is fixed on the top plate C140, and the catalytic exhaust pipe C222 is used for conveying the airflow in the catalytic cavity to the air pump, so as to be recycled.

In this embodiment, the 3V power supply is an AC-DC converter, which converts the commercial power into 3V DC power.

The gas catalyst of the invention is mainly applied on the same date as the present case at present and named as: the invention discloses a catalytic module and a gas catalytic converter thereof, and a gas distributing valve and a gas catalytic converter thereof, which are the gas catalytic converters recorded in the two Chinese patent application.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A reversing water valve is characterized by comprising a reversing valve body, a first valve shell and a second valve shell, wherein a reversing ball groove is formed in the reversing valve body, a reversing valve ball and a reversing valve ball are mounted in the reversing ball groove, a reversing through hole and a reversing guide groove are formed in the reversing valve ball, the reversing through hole penetrates through the reversing valve ball, and the reversing guide groove is formed in the spherical surface of the reversing valve ball; the reversing valve ball is fixedly assembled with one end of the reversing valve rod, and the other end of the reversing valve rod penetrates through the reversing valve body and is fixedly assembled with the second reversing gear;

2. The reversing water valve of claim 1, wherein the first reversing gear is fixed to a first reversing shaft, the first reversing shaft passes through the first valve housing and is coaxially assembled with an output shaft of the reversing motor through a connecting shaft, a reversing motor driver is disposed in the reversing motor, the reversing motor driver is used for supplying power to the reversing motor so as to control the operation state of the reversing motor, and a control end of the reversing motor driver is in communication connection with a signal end of the PLC.

3. The reversing water valve of claim 1 or claim 2, wherein one end of the reversing valve stem passes through the first valve housing and enters the second valve housing to be fixedly assembled with the code disc, the code disc is provided with a plurality of code holes in a circumferential direction, and the edge of the code disc provided with the code holes is fitted into the encoder.

4. The reversing water valve of claim 1 or claim 2, wherein the top of the reversing rack is fixedly secured to the reversing limiting plate by a T-shaped connecting strip that extends through and is slidably secured to a reversing runner that is disposed on a reversing guide plate secured to the inside of the first valve housing.

5. The reversing water valve of claim 1 or 2, wherein the first valve housing and the corresponding position of the two ends of the reversing rack are respectively provided with a first travel switch and a second travel switch, the input ends of the first travel switch and the second travel switch are electrically connected with a 3V power supply, and the output ends of the first travel switch and the second travel switch are electrically connected with the control end of the reversing motor driver, when the first travel switch or the second travel switch is triggered, the reversing motor driver obtains signal input, judges that the reversing motor needs to stop running, and controls the reversing motor to stop running.

6. The reversing water valve of claim 5, wherein the first and second travel switches are sleeved with a damping spring at an end facing the reversing rack.

7. The reversing water valve of claim 1, further comprising a leakage detection assembly, wherein the leakage detection assembly comprises a leakage detection outer ring and a leakage detection shell, a leakage detection induction groove is formed in the leakage detection shell, a micro switch and a leakage detection trigger plate are arranged in the leakage detection induction groove, the leakage detection trigger plate is clamped with the leakage detection induction groove and can be assembled in a sliding mode, the leakage detection trigger plate is fixed to the outer portion of a telescopic pipe, the telescopic pipe is arranged on the driving bag, the inner portion of the telescopic pipe is communicated with the inner portion of the driving bag, fluid is filled in the driving bag, and the driving bag is in a sealed state; the extension tube has elasticity, can be extended under the drive of internal fluid and then retracts under the action of the elasticity of the extension tube; in the initial state, the leakage detection trigger plate is not contacted with the trigger end of the microswitch;

8. A photocatalytic based sewage treatment system, characterized in that a reversing water valve according to any of claims 1-7 is applied.

9. The wastewater treatment system of claim 8, further comprising:

a water level gauge for detecting the water level in the sedimentation tank;

10. The wastewater treatment system according to claim 9, wherein the water filtered by the filter is communicated with a mixing inlet pipe of a mixing tank through a water pipe, and the interior of the mixing tank is further communicated with a chemical feeder for feeding a catalyst into the mixing tank; further comprising:

the reservoir is used for storing the purified water;