CN210315791U

CN210315791U - Novel negative pressure suppressor for secondary water supply water tank

Info

Publication number: CN210315791U
Application number: CN201920945863.4U
Authority: CN
Inventors: 张文庆; 谭玉红
Original assignee: Chengdu Runyida Environment Technology Co ltd
Current assignee: Chengdu Runyida Environment Technology Co ltd
Priority date: 2019-06-23
Filing date: 2019-06-23
Publication date: 2020-04-14
Anticipated expiration: 2029-06-23

Abstract

A novel negative pressure suppressor for a secondary water supply tank comprises a negative pressure suppressor body, a hydroelectric generator, a rectifying circuit, a voltage stabilizing circuit, a storage battery, a photoelectric switch, an electromagnetic valve and a filter disc, and is also provided with a transverse connecting pipe and a vertical connecting pipe; the left lower end of the transverse connecting pipe is connected with the upper end of the exhaust pipeline of the negative pressure suppressor body; the upper ends of the two vertical connecting pipes are respectively arranged at the right lower part of the horizontal connecting pipe; the two filter discs are respectively arranged at the lower parts in the two vertical connecting pipes, and the two electromagnetic valves are respectively arranged at the lower ends of the two vertical connecting pipes; wherein, a lower exhaust pipe is fixedly arranged in the exhaust pipe of one electromagnetic valve, and the photoelectric switch is arranged in the lower exhaust pipe; the hydroelectric generator is arranged in the upper end of a water outlet pipeline at the lower part of the water tank, and the rectifying circuit, the voltage stabilizing circuit and the storage battery are arranged in the element box and connected through a lead. This novel not only can effectively discharge the water tank air, and can prevent effectively that outside dust and toy from causing the water source to pollute in getting into the water tank, can also realize full automatic operation.

Description

Novel negative pressure suppressor for secondary water supply water tank

Technical Field

The utility model relates to a secondary water supply equipment field, especially a secondary water supply water tank is with novel negative pressure inhibitor.

Background

A constant-pressure secondary water supply system for high-rise buildings is a secondary water supply device which is widely used, in work, the running water of an under-pressure municipal pipe network flows into a water tank for storage, and then the booster pump of the constant-pressure secondary water supply system is controlled by related equipment to pump out water from the water tank for pressurization and send the water to a user pipeline for use by residents of the high-rise buildings. The water tank is a water storage device used by the constant-pressure secondary water supply system, and because the capacity is large, and the water level keeps a high water level all the time under the action of a ball float valve of the secondary water supply system, when the municipal tap water pipe network stops water, the normal water use of a user can be ensured for a long period of time, and therefore the water tank has an important effect in the secondary water supply system.

The water tank used by the existing constant-pressure secondary water supply system is generally in a sealed state at the upper part in order to prevent dust, small animals and the like from entering the water tank. The upper part of a water tank of the constant-pressure secondary water supply system is provided with a negative pressure suppressor (equivalent to an air vent), when the water in the water tank is not full, a floating ball of the negative pressure suppressor is positioned downwards, so that after the water enters the water tank, air in the water tank is discharged from an exhaust pipeline at the upper end of the negative pressure suppressor, and after the water is full, the floating ball floats upwards to block an exhaust port of the exhaust pipeline, so that dust or small animals (such as mice, insects and the like) are prevented from entering the water tank through the exhaust pipeline to cause water source pollution. The existing negative pressure suppressor is limited by the structure, when the water in the water tank is not full, the floating ball of the existing negative pressure suppressor is not under the buoyancy action of the water, and the exhaust pipeline is communicated with the outside air, so that small animals, particularly dust, enter the water tank, and the safety and sanitary water of residents is influenced. In summary, it is necessary to provide a novel negative pressure suppressor which can effectively prevent dust and small animals from entering the water tank when being combined with the existing negative pressure suppressor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the negative pressure inhibitor that its water tank of present constant pressure secondary water supply system used because of the drawback that the structure limited existence, the utility model provides a combined current negative pressure inhibitor body uses, not only can effectively discharge the interior air of water tank in using, and can prevent effectively that outside dust and toy from getting into and causing the water source pollution in the water tank, can also realize the novel negative pressure inhibitor for the secondary water supply water tank of full automatic operation.

The utility model provides a technical scheme that its technical problem adopted is:

a novel negative pressure suppressor for a secondary water supply tank comprises a negative pressure suppressor body, a hydroelectric generator, a rectifying circuit, a voltage stabilizing circuit, a storage battery, a photoelectric switch, an electromagnetic valve and a filter disc, and is characterized by also comprising a transverse connecting pipe and a vertical connecting pipe; the right end of the transverse connecting pipe is of a closed structure, the right lower end of the transverse connecting pipe is provided with two openings, and the left lower end of the transverse connecting pipe is fixedly connected with the upper end of the exhaust pipeline of the negative pressure suppressor body; the upper ends of the two vertical connecting pipes are respectively and fixedly arranged at the right lower part of the horizontal connecting pipe; the two filter discs are respectively arranged at the lower parts in the two vertical connecting pipes, and the two electromagnetic valves are respectively arranged at the lower ends of the two vertical connecting pipes; a lower exhaust pipe is fixedly arranged in the exhaust pipe of one of the electromagnetic valves, and the photoelectric switch is arranged in the lower exhaust pipe; the hydroelectric generator is arranged in the upper end of a water outlet pipeline at the lower part of the water tank, and the rectifying circuit, the voltage stabilizing circuit and the storage battery are arranged in the element box together; two terminals of the hydroelectric generator and two ends of the power input of the rectifying circuit are respectively connected through leads, two ends of the power output of the rectifying circuit and two ends of the power input of the voltage stabilizing circuit are respectively connected through leads, two ends of the power output of the voltage stabilizing circuit and two ends of the power input of the storage battery and the photoelectric switch are respectively connected through leads, and the output end of the photoelectric switch power, the cathode of the storage battery and the input ends of the positive and negative poles of the two electromagnetic valves are respectively connected through leads.

Furthermore, a connecting pipe is fixedly mounted at the upper end of a water outlet pipeline at the lower part of the water tank, a fixed pipe is fixedly mounted at the upper end of a shell of the hydroelectric generator, the upper end of the fixed pipe is fixedly mounted at the lower end of the middle part of a sealing cover, an opening is formed in the upper end of the sealing cover, a cable waterproof joint is mounted on the opening, the upper end of a power output wire of the hydroelectric generator is located outside the waterproof joint, and the sealing cover is mounted.

Furthermore, the rectifying circuit comprises a rectifying bridge stack of a type KBU810 and an electrolytic capacitor, the rectifying bridge stack and the electrolytic capacitor are connected through a circuit board in a wiring mode, and two ends of a power supply output of the rectifying bridge stack are respectively connected with the positive pole and the negative pole of the electrolytic capacitor.

Furthermore, the voltage stabilizing circuit comprises a fixed three-terminal voltage-stabilizing output integrated circuit of a model 7806, a ceramic capacitor and a diode, wherein the fixed three-terminal voltage-stabilizing output integrated circuit is connected with the ceramic capacitor through a circuit board in a wiring way, a pin 1 at the positive power input end of the three-terminal voltage-stabilizing output integrated circuit is connected with one end of the first ceramic capacitor, a pin 3 at the positive power output end of the three-terminal voltage-stabilizing output integrated circuit is connected with one end of the second ceramic capacitor, a pin 2 at the negative power input end of the three-terminal voltage-stabilizing output integrated circuit is connected with the positive electrode of the diode, and.

Furthermore, one valve core of the electromagnetic valve is of a normally open structure, and the other valve core of the electromagnetic valve is of a normally closed structure.

Furthermore, the photoelectric switch is a reflection-type infrared photoelectric switch, the photoelectric switch is matched with a relay, a power output end and a negative power output end of the photoelectric switch are respectively connected with a positive and negative power input end of the relay, a positive power input end of the photoelectric switch is connected with a control power input end of the relay, one side and the other side of the middle part of the lower exhaust pipe are respectively provided with an opening aligned in position, a shell of the photoelectric switch is fixedly arranged in the opening on one side of the lower exhaust pipe, and a detection head of the photoelectric switch faces towards the front end and is aligned with the opening on the other side of the middle part of the lower.

Furthermore, each filter sheet comprises a box body and a plurality of layers of gauze which are overlapped and sewn together, the filter sheets are positioned between the two layers of the box body, and a plurality of vent holes are respectively formed in the upper end and the lower end of the box body at intervals.

The utility model has the advantages that: the utility model discloses combine current negative pressure inhibitor body to use, when the water tank water is not full, the floater of negative pressure inhibitor body is in the downward position, guarantees that water gets into the water tank after, and the air is discharged in the exhaust duct of negative pressure inhibitor upper end, and water is full back, and exhaust duct's gas vent is plugged up to the floater come-up. In the novel water tank, as the filter disc is arranged, dust entering the water tank from the outside can be effectively filtered, and the water is prevented from being polluted by the dust; when water in the water tank flows out through outlet conduit and gets into constant voltage secondary water supply system booster pump income water end (user's normal water has been guaranteed to direct output to user's pipeline behind the booster pump of constant voltage secondary water supply system with water pressure boost), rivers can drive hydroelectric generator electricity generation and charge for the battery, like this, this novel input that does not need external power source saves the electric energy and can also accomplish unmanned management state. In-service, before in the mouse or great insect will get into the water tank (the insect can in fact be blockked by the cassette), photoelectric switch can make first solenoid valve close, has effectively prevented that mouse etc. from getting into inside and gnawing the cassette, and the second solenoid valve case is opened simultaneously, prevents that the unable discharge of air that leads to water tank or other parts of first solenoid valve closes the back water tank damage. Based on the foregoing, the utility model discloses good application prospect has.

Drawings

The invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the present invention between one vertical connecting pipe, one electromagnetic valve, one filter sheet, and the photoelectric switch.

Fig. 3 is a schematic structural diagram of a photoelectric switch used in the present invention.

Fig. 4 is a schematic structural view between the hydroelectric generator and the sealing cover and the fixing tube.

Fig. 5 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, 2, 3 and 4, a novel negative pressure suppressor for a secondary water supply tank comprises a negative pressure suppressor body 1, a hydroelectric generator 2, a rectifying circuit 3, a voltage stabilizing circuit 4, a storage battery 5, a photoelectric switch 6, an electromagnetic valve 7 and a filter plate 8 which are originally arranged on the water tank, and further comprises a horizontal connecting pipe 9 and a vertical connecting pipe 10; the outer side of the left lower end of the transverse connecting pipe 9 is provided with an external thread, the right end of the transverse connecting pipe 9 is of a closed structure, the right lower end of the transverse connecting pipe 9 is provided with two openings, and the left lower end of the transverse connecting pipe 9 and the upper end of the exhaust pipeline of the negative pressure suppressor body 1 on the upper part of the water tank 11 are fixedly connected together by a pipeline joint through the external thread on the outer side of the left lower end of the transverse connecting pipe 9 and the external thread; the upper ends of the two vertical connecting pipes 10 are respectively welded on the outer sides of the two openings at the right lower part of the horizontal connecting pipe 9; the two circular filter sheets 8 are respectively arranged at the inner lower parts of the two vertical connecting pipes 10, the outer sides of the lower parts of the two vertical connecting pipes 10 are respectively provided with external threads, the external threads at the lower parts of the two vertical connecting pipes 10 are respectively screwed into the external threads of the air inlet pipes of the two electromagnetic valves 7, and the two electromagnetic valves 7 are respectively arranged at the lower ends of the two vertical connecting pipes 10; one lower exhaust pipe 71 is fixedly arranged in the exhaust pipe of one electromagnetic valve 7, and the photoelectric switch 6 is arranged in the lower exhaust pipe 71; the hydroelectric generator 2 is arranged in the upper end of a water outlet pipeline 111 at the lower part of the water tank 11, the rectifying circuit 3 and the voltage stabilizing circuit 4 are arranged on the circuit board, the circuit board and the storage battery 5 are arranged in the element box 12 together, and the element box 12 is fixedly arranged on a support frame at the upper end of the rear side of the water outlet pipeline 111 at the lower end of the water tank 11.

As shown in fig. 1, 2, 3 and 4, the hydroelectric generator 2 is a miniature impeller type hydroelectric generator finished product (waterproof type, capable of preventing water from entering into the housing of the hydroelectric generator 2) of brand FJY, the output voltage is ac 0-15V, a connecting pipe 112 with an external thread on the inner upper part is welded on the upper end of a water outlet pipeline 111 on the lower part of a water tank, a fixed pipe 21 is welded on the upper end of the housing of the hydroelectric generator 2, the upper end of the fixed pipe 21 is welded on the lower end of the middle part of a sealing cover 22, the inner side of the lower end of the sealing cover 22 is provided with an internal thread, a power output lead of the hydroelectric generator 2 is positioned in the fixed pipe 21, the middle part of the upper end of the sealing cover 22 is provided with an opening, a cable waterproof connector 23 made of plastic material is arranged on the opening, the, the sealing cover 22 is arranged at the upper end of the connecting pipe 112, the hydroelectric generator 2 is positioned in the water outlet pipeline 111 at the lower part of the water tank, the impeller 24 and the water outlet pipeline 111 are transversely positioned in a straight line and positioned at the front end of the shell of the hydroelectric generator 2, and when water flows, the impeller 24 drives the coil in the shell of the hydroelectric generator 2 to rotate and cut magnetic lines of force to generate alternating current power. The rear side and the front side of the middle part of the lower exhaust pipe 71 are respectively provided with an opening (the diameter of the opening at the front end is large) with aligned positions, the shell of the photoelectric switch 6 is arranged in the opening at the rear side of the lower exhaust pipe 71 through a fixing nut 61 matched with the shell, and the detection head of the photoelectric switch 6 faces to the front end and is aligned with the opening at the front side of the middle part of the lower exhaust pipe 71. Each filter sheet 8 comprises a circular double-layer hollow plastic box 81 and a circular filter sheet 82 formed by overlapping and sewing multiple layers of gauzes, the circular filter sheet 82 is positioned between the two layers of the plastic box 81, a plurality of vent holes are respectively formed in the upper end and the lower end of the plastic box 81 at certain intervals, the inner layer of the plastic box 81 and the filter sheet 82 are in a close contact state, internal threads are formed in the lower inner part of each vertical connecting pipe 10, external threads are formed in the outer side end of the plastic box 81, internal threads are formed by screwing the external threads on the outer side of the plastic box 81 into the lower inner part of each vertical connecting pipe 10, and the two circular filter sheets 8 are respectively installed on the lower inner parts of.

As shown in fig. 5, the hydroelectric generator M is a finished product of a brand FJY miniature impeller-type hydroelectric generator (waterproof, capable of preventing water from entering the generator housing), and its output voltage is 0-15V ac. The rectification circuit comprises a rectifier bridge stack finished product IC with the model number KBU810 and an electrolytic capacitor C, wherein the rectifier bridge stack finished product IC and the electrolytic capacitor C are connected through a circuit board in a wiring mode, and the two

ends

3 and 3 of the power supply output end of the rectifier bridge stack IC are respectively connected with the positive pole and the negative pole of the electrolytic capacitor C. The voltage stabilizing circuit comprises a fixed three-terminal voltage stabilizing output integrated circuit of a model 7806, ceramic chip capacitors C1, C2 and a diode VD, wherein the fixed three-terminal voltage stabilizing output integrated circuit is connected with a circuit board through wiring, a pin 1 of a positive power supply input end of a three-terminal voltage stabilizing output integrated circuit IC1 is connected with one end of a first ceramic chip capacitor C1, a pin 3 of a positive power supply output end of a three-terminal voltage stabilizing output integrated circuit IC1 is connected with one end of a second ceramic chip capacitor C2, a pin 2 of a negative power supply input end of a three-terminal voltage stabilizing output integrated circuit IC1 is connected with the positive electrode of the diode VD, and the other ends of the first ceramic chip capacitor C. The storage battery G is a 6V/5Ah lithium storage battery, the electromagnetic valves DC1 and DC2 are 6V working voltage electromagnetic air valves of Sodi brand and US-25 model, the power is 2W, and one electromagnetic valve DC1 valve core is of a normally open structure, and the other electromagnetic valve DC2 valve core is of a normally closed structure. Photoelectric switch IC2 is that the brand allies oneself with, model E18-D80NK reflection type infrared photoelectric switch finished product, operating voltage 6V, it has two

power supply terminal

1 and 2 feet, a power output end 3 feet, when the infrared light that the emission head of its casing front end launches is blockked by article during operation (detection distance is 70 centimetres farthest), power output end 3 feet can output the high level, do not output the high level signal when unblock, photoelectric switch IC2 is supporting and is equipped with a relay J, photoelectric switch IC 2's power output end 3 feet, negative pole power input end 2 feet and relay J positive and negative poles power input end are connected respectively, photoelectric switch IC2 positive pole power input end 1 foot and relay J control power input end are connected. Two terminals of a hydroelectric generator M and 1 and 2 pins of a rectifier circuit power input two-end rectifier bridge stack IC are respectively connected through leads, 3 and 4 pins of the rectifier circuit power output two-end rectifier bridge stack IC and 1 and 2 pins of a voltage stabilizing circuit power input two-end fixed three-terminal voltage stabilizing output integrated circuit IC1 are respectively connected through leads, 3 and 2 pins of the voltage stabilizing circuit power output two-end fixed three-terminal voltage stabilizing output integrated circuit IC1 and two ends of a storage battery G power input, 1 and 2 pins (VCC and GND) of a photoelectric switch IC2 power input two ends are respectively connected through leads, and a normally open contact end of a power output end relay J of a photoelectric switch IC2, a negative electrode of the storage battery G, and positive and negative electrode power input ends of two electromagnetic valves DC1 and DC2 are.

Shown in fig. 1, 2, 3, 4, 5, the utility model discloses combine current negative pressure inhibitor body 1 to use, when water tank 11 water is not full, the floater 101 of negative pressure inhibitor body is in the downward position, guarantees that water gets into water tank 11 after, and the air is discharged in the exhaust duct 102 from negative pressure inhibitor 1 upper end, and after water was full, the gas vent of exhaust duct 102 was plugged up to the floater 101 come-up. In the novel water supply device, when water in the water tank 11 flows out of the water outlet pipeline 111 and enters the water inlet end of the booster pump of the constant-pressure secondary water supply system (the booster pump of the constant-pressure secondary water supply system boosts the water and then directly outputs the water to a user pipeline, so that normal water consumption of a user is ensured), the water flow can drive the impeller of the hydroelectric generator M to rotate to generate power, after the hydroelectric generator M generates alternating current power (the specific voltage is high, the water flow is low, the water consumption is high, the voltage is high, the water consumption is low, and the voltage fluctuates between 12 and 15V in a general water peak period, the alternating current power output by the hydroelectric generator M enters the 1 pin and the 2 pin of the rectifier bridge IC, and under the action of the internal circuit of the rectifier bridge IC, the 3 pin and the 4 pin (electrolytic capacitor C filtering) of the rectifier bridge IC can output the rectified direct current power and enter the 1 pin and the 2 pin of the fixed three-terminal voltage stabilizing output integrated circuit IC1, and the fixed three Under the combined action of the element diode VD, the ceramic chip capacitors C1 and C2 (the output of the fixed three-terminal voltage-stabilizing output integrated circuit IC1 is 6V, under the action of an internal circuit thereof, after 2 and 3 pins are connected in series with a silicon rectifier diode VD with about 0.7V of voltage drop, 3 pins of the power output end can output a stable 6.7V direct-current power supply, and the ceramic chip capacitors C1 and C2 play a role in filtering), the stable 6.7V direct-current power supply is output from the 3 and 2 pins and enters the storage battery G to carry out floating charging on the storage battery G, so that the storage battery G is ensured to normally float and can not be damaged due to overhigh charging voltage. In this is novel, open as the floater 101 of negative pressure inhibitor body 1, when the inside air of water tank 11 discharged to the water tank 11 outside, owing to there is filter 8, the air that gets into in the water tank 11 can be blockked at filter 8 lower extreme by filter 81 effective filtration of filter 8, prevents that external dust from causing water pollution in getting into the water tank 11. In this is novel, its inside case is open state when first solenoid valve DC1 does not get electricity, and the inside air of water tank 11 can be discharged through solenoid valve DC1, has prevented the inside negative pressure that produces of water tank. In practical application, when a mouse, a gecko and the like or a large insect enter the left-end lower exhaust pipe 71, because the left-end lower exhaust pipe 71 is internally provided with the photoelectric switch IC2 (the valve core of the electromagnetic valve DC2 is in a closed state at the moment, the mouse and the like cannot contact the filter sheet 8 at the upper end of the electromagnetic valve DC 2), the mouse and the like can block infrared rays emitted by the photoelectric switch IC2 at the moment, so that under the action of an internal circuit of the photoelectric switch IC2, 3 pins of the photoelectric switch IC2 can output high level to enter the positive power input end of the relay J, and the relay J is electrified to attract the control power input end and the normally-open contact end to be closed; because the relay J controls the power supply input end to be connected with the positive pole of the storage battery G, the normally open contact end of the relay J is connected with the power supply input ends of the positive poles of the electromagnetic valves DC1 and DC2, and the negative poles of the electromagnetic valves DC1 and DC2 are communicated with the negative pole of the storage battery G, the electromagnetic valves DC1 and DC2 can be electrified to work at the moment; the internal valve core is closed after the electromagnetic valve DC1 is electrified, and the internal valve core is opened after the electromagnetic valve DC2 is electrified, so that mice and the like are prevented from entering the position below the filter disc 8 through the valve core of the electromagnetic valve DC1 and biting the filter disc 81; at this moment, because the valve core of the second electromagnetic valve DC2 is opened, the air in the water tank after the first electromagnetic valve DC1 is closed is prevented from being discharged to cause the damage of the water tank or other components (in practical application, the purpose is mainly to prevent the entrance of mice and the like, and insects and the like can not enter the water tank 11 any more even if entering the valve core of the electromagnetic valve DC1 due to the blocking of the filter disc 81). When a mouse or the like leaves the lower exhaust pipe 71 at the left end, infrared light emitted by the emitting head of the photoelectric switch IC2 is not blocked any more, the 3 pin of the photoelectric switch IC2 does not output high level any more, the relay J loses power and does not attract the control power supply input end and the normally open contact end to open, so that the electromagnetic valves DC1 and DC2 lose power and do not work any more, the valve core inside the electromagnetic valve DC1 is opened to ensure the continuous discharge of air in the water tank 11, the valve core inside the electromagnetic valve DC2 is closed, and all equipment returns to the initial state; air in the water tank 11 is discharged, and dust, mice and the like can be effectively prevented from entering the water tank 11. In practical situations, although the valve core of the electromagnetic valve DC2 is opened after the valve core of the electromagnetic valve DC1 is closed, if a small animal enters the lower exhaust pipe 71 and the lower end of the electromagnetic valve DC2 at the same time, the small animal or a large insect in the lower exhaust pipe 71 at the left end cannot stay in the lower exhaust pipe 71 which cannot ascend for a long time and has a smooth inner wall (the time is short), so after the small animal or the large insect leaves the lower exhaust pipe 71, the electromagnetic valves DC1 and DC2 lose power at the same time, and after the second electromagnetic valve DC2 is closed, the small mouse and the like can be effectively prevented from continuously ascending to bite the filter 81 in the lower exhaust pipe 71 at the right end (the second electromagnetic valve DC2 mainly plays a role in back up exhaust of exhaust air). The relay J is a model DC4123 type 6V miniature relay; the electrolytic capacitor C is 470 muF/25V; the sizes of the ceramic chip capacitors C1 and C2 are 0.33 muF and 0.1 muF respectively; the diode VD is 1N4007 in size.

The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but rather can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel negative pressure suppressor for a secondary water supply tank comprises a negative pressure suppressor body, a hydroelectric generator, a rectifying circuit, a voltage stabilizing circuit, a storage battery, a photoelectric switch, an electromagnetic valve and a filter disc, and is characterized by also comprising a transverse connecting pipe and a vertical connecting pipe; the right end of the transverse connecting pipe is of a closed structure, the right lower end of the transverse connecting pipe is provided with two openings, and the left lower end of the transverse connecting pipe is fixedly connected with the upper end of the exhaust pipeline of the negative pressure suppressor body; the upper ends of the two vertical connecting pipes are respectively and fixedly arranged at the right lower part of the transverse connecting pipe; the two filter discs are respectively arranged at the lower parts in the two vertical connecting pipes, and the two electromagnetic valves are respectively arranged at the lower ends of the two vertical connecting pipes; wherein, a lower exhaust pipe is fixedly arranged in the exhaust pipe of one electromagnetic valve, and the photoelectric switch is arranged in the lower exhaust pipe; the hydroelectric generator is arranged in the upper end of a water outlet pipeline at the lower part of the water tank, and the rectifying circuit, the voltage stabilizing circuit and the storage battery are arranged in the element box together; two terminals of the hydroelectric generator and two ends of the power input of the rectifying circuit are respectively connected through leads, two ends of the power output of the rectifying circuit and two ends of the power input of the voltage stabilizing circuit are respectively connected through leads, two ends of the power output of the voltage stabilizing circuit and two ends of the power input of the storage battery and the photoelectric switch are respectively connected through leads, and the output end of the photoelectric switch power, the cathode of the storage battery and the input ends of the positive and negative poles of the two electromagnetic valves are respectively connected through leads.

2. The negative pressure suppressor for the secondary water supply tank as claimed in claim 1, wherein the connecting pipe is fixedly installed at the upper end of the water outlet pipe at the lower part of the water tank, the fixed pipe is fixedly installed at the upper end of the casing of the hydroelectric generator, the upper end of the fixed pipe is fixedly installed at the lower end of the middle part of the sealing cover, the upper end of the sealing cover is provided with an opening, the opening is provided with a cable waterproof joint, the upper end of the power output wire of the hydroelectric generator is located outside the waterproof joint, and the sealing cover is installed at.

3. The negative pressure suppressor for secondary water supply tank as claimed in claim 1, wherein the rectifying circuit comprises a bridge rectifier of type KBU810 and an electrolytic capacitor connected via wiring on a circuit board, and the two terminals of the power supply output of the bridge rectifier are connected to the positive and negative electrodes of the electrolytic capacitor, respectively.

4. The negative pressure suppressor for the secondary water supply tank as claimed in claim 1, wherein the voltage regulator circuit comprises a fixed three-terminal voltage-stabilizing output integrated circuit of type 7806, a ceramic capacitor and a diode, which are connected by wiring on a circuit board, wherein pin 1 of the positive power input terminal of the three-terminal voltage-stabilizing output integrated circuit is connected with one end of the first ceramic capacitor, pin 3 of the positive power output terminal of the three-terminal voltage-stabilizing output integrated circuit is connected with one end of the second ceramic capacitor, pin 2 of the negative power input terminal of the three-terminal voltage-stabilizing output integrated circuit is connected with the positive electrode of the diode, and the other end of the first ceramic capacitor and the other end of the second ceramic capacitor are connected with the.

5. The novel negative pressure suppressor for the secondary water supply tank as claimed in claim 1, wherein one valve core of the solenoid valve is of a normally open type structure, and the other valve core of the solenoid valve is of a normally closed type structure.

6. The negative pressure suppressor for the secondary water tank as claimed in claim 1, wherein the photoelectric switch is a reflective infrared photoelectric switch, the photoelectric switch is provided with a relay, a power output terminal and a negative power output terminal of the photoelectric switch are respectively connected with a positive and negative power input terminal of the relay, a positive power input terminal of the photoelectric switch is connected with a control power input terminal of the relay, one side and the other side of the middle part of the lower exhaust pipe are respectively provided with an opening with aligned position, a housing of the photoelectric switch is fixedly arranged in an opening on one side of the lower exhaust pipe, and a probe of the photoelectric switch faces the front end and is aligned with the opening on the other side of the middle part of the lower exhaust pipe.

7. The novel negative pressure suppressor for a secondary water supply tank as claimed in claim 1, wherein each filter comprises a box body and a plurality of layers of gauze stacked and sewn together, the filter is located between the two layers of the box body, and the box body has a plurality of air holes at intervals between the upper end and the lower end thereof.