CN210621600U

CN210621600U - Pressure relief device for preventing water pipe of high-pressure cleaning vehicle from being overhigh in pressure

Info

Publication number: CN210621600U
Application number: CN201921388666.3U
Authority: CN
Inventors: 何太平
Original assignee: Guangzhou Haoxiang Municipal Engineering Construction Co Ltd
Current assignee: Guangzhou Haoxiang Municipal Engineering Construction Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-05-26
Anticipated expiration: 2029-08-23

Abstract

The utility model relates to a prevent pressure relief device that high pressure cleaning car water pipe pressure is too high belongs to sanitation machinery's technical field, and its intake pipe that includes the water storage tank, high pressure water pump, the water spray valve of railway carriage, fixed railway carriage bottom and intercommunication high pressure water pump, its characterized in that: the water outlet end of the high-pressure water pump is communicated with a trifurcate water pipe, one end of the output end of the trifurcate water pipe is communicated with a water spray valve, the other end of the trifurcate water pipe is communicated with an overflow valve, the overflow valve is communicated with a return pipe, and the return pipe is communicated with a water storage tank. The utility model discloses its effect that has is when the water pressure is too high in the water pipe, with the water drainage back to the water storage tank in, reduces water pressure, prevents that high pressure water pump or water pipe from damaging because the water pressure is too high in the water pipe.

Description

Pressure relief device for preventing water pipe of high-pressure cleaning vehicle from being overhigh in pressure

Technical Field

The utility model belongs to the technical field of sanitation machinery's technique and specifically relates to a prevent high-pressure sewer flushing vehicle water pipe overpressure's pressure relief device is related to.

Background

The high-pressure cleaning vehicle is also called as a pipeline dredging vehicle, and the blocked pipeline is flushed by strong pressure generated by high-pressure water flow. The main components are a tank body, a high-pressure pump, a hydraulic system and the like. The high-pressure cleaning vehicle is mainly used for cleaning sediments of urban sewers and pipelines and dredging dead angle mud ditches, and also can be used for cleaning industrial drainage pipelines, wall surfaces and the like and cleaning road and square floors.

When the existing high-pressure cleaning vehicle works, an operator needs to open the water spray valve firstly and then open the high-pressure water pump, and after the work is finished, the water spray valve needs to be closed firstly and then the high-pressure water pump is closed.

The above prior art solutions have the following drawbacks: the condition that the high pressure water pump continues to work when operating personnel's misoperation leads to the spray valve to close, and the water pressure increases in the water pipe, probably leads to high pressure water pump to damage or the water pipe damages current high pressure cleaning car.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent pressure relief device of high-pressure sewer flushing vehicle water pipe high pressure, its effect is when the water pressure is too high in the water pipe, with water drainage return water storage tank in, with water pressure reduction, prevent that high-pressure water pump or water pipe from damaging because the water pressure is too high in the water pipe.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the pressure relief device comprises a base, a water storage tank, a high-pressure water pump, a water spray valve and a water taking pipe, wherein the water storage tank, the high-pressure water pump, the water spray valve and the water taking pipe are fixed on the base, the water outlet end of the high-pressure water pump is communicated with a trident water pipe, one end of the output end of the trident water pipe is communicated with the water spray valve, the other end of the trident water pipe is communicated with an overflow valve, the overflow valve is communicated with a return pipe, and the return pipe is.

Through adopting above-mentioned technical scheme, when high pressure water pump during operation, water in the water storage tank flows to high pressure water pump through the intake pipe, then flow to trident water pipe, water just produces an effort on the case, the direction of force is opposite with the interior spring force direction of overflow valve, when water pressure is less than the set pressure of overflow valve, then the case does not open, rivers flow from the spray valve to the spray valve, when staff misoperation, high pressure water pump when the spray valve is closed continues to work, water can't flow from the spray valve, the continuous grow of water pressure in the water pipe, when the effort that water pressure produced is greater than the spring force, the case is opened, water flows back to the water storage tank through the back flow, the spring force increases along with the increase of the shedding volume of overflow valve, until balanced with water pressure effort.

The utility model discloses further set up to: the overflow valve is a direct-acting overflow valve capable of adjusting the pre-compression amount of the spring.

Through adopting above-mentioned technical scheme, the overflow valve is the direct-acting overflow valve, because direct-acting overflow valve simple structure often makes the occasion that relief valve or pressure regulating precision requirement are not high, and this direct-acting overflow valve is adjustable simultaneously, through the precompression volume of pressure regulating screw adjusting spring, can set the size of overflow valve overflow pressure value for the overflow valve opens when water pressure reaches predetermined water pressure, avoids the overflow valve to open when normal work or still not open when needs the pressure release.

The utility model discloses further set up to: the trifurcate water pipe and the return pipe are single-wall corrugated water pipes.

Through adopting above-mentioned technical scheme, water in the pipeline is behind high pressure water pump, and the water pressure is higher in the pipeline, and single wall ripple water pipe has certain ductility to can cushion certain water pressure, make the water pipe be difficult to damage when water pressure is great.

The utility model discloses further set up to: be provided with the fixed bolster on the base, fixedly connected with a plurality of fixing base on the fixed bolster, it has the clearing hole to open on the fixing base, the trident water pipe and the back flow runs through the clearing hole, the fixing base including with fixed bolster fixed connection's fixed part and articulate rotation portion on the fixed part, the fixed part is kept away from one of pin joint and is served and open the joint groove that has L shape, rotation portion keep away from the one end fixedly connected with of pin joint with the joint piece of joint groove cooperation joint.

Through adopting above-mentioned technical scheme, put into the through-hole with trident water pipe and back flow, will rotate the portion and rotate the cooperation of joint piece and the joint groove joint on the fixed part in the portion, make trident water pipe and back flow fixed, because the water pressure in the pipeline is great, during the high pressure water that flows in the pipeline, the pipeline probably appears rocking, after having set up the fixing base, fixes the pipeline and makes the pipeline be difficult to rock.

The utility model discloses further set up to: the fixed seat is positioned in the through hole and is fixedly connected with a rubber ring.

Through adopting above-mentioned technical scheme, set up the rubber circle, make flexible contact between pipeline and the fixing base, when the pipeline has the trend of rocking, play the guard action to the pipeline.

The utility model discloses further set up to: the backflow pipe is provided with a flow velocity sensor, and the flow velocity sensor is electrically connected with the alarm.

Through adopting above-mentioned technical scheme, after the case of overflow valve was opened, rivers were to in the return-flow pipe, and flow rate sensor experienced the change volume, turned into the signal of telecommunication output with it and given the alarm, and the alarm is reported to the police and is reminded the staff and appear misoperation.

The utility model discloses further set up to: the water taking pipe penetrates through the water storage tank from the top of the water storage tank to extend to the bottom of the water storage tank.

Through adopting above-mentioned technical scheme, the intake pipe runs through the water storage tank from the top and extends to the water storage tank bottom, draws water upwards from the bottom and makes the water level reduce and make the drinking-water pipe still can be located below the liquid level, avoids high-pressure water pump idle running.

The utility model discloses further set up to: and sealing rings are arranged at the joints of the water taking pipe and the return pipe with the water storage tank.

Through adopting above-mentioned technical scheme, set up the sealing washer, the increase gas tightness is favorable to reducing the junction of water intaking pipe and back flow and water storage tank and leaking.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the high-pressure water pump works, water in the water storage tank flows out to the high-pressure water pump through the water taking pipe and then flows to the three-way water pipe, the water generates an acting force on the valve core, the direction of the acting force is opposite to the direction of a spring force in the overflow valve, when the water pressure is lower than the set pressure of the overflow valve, the valve core is not opened, the water flows to the water spray valve and flows out of the water spray valve, when the high-pressure water pump continues to work while the water spray valve is closed due to misoperation of workers, the water cannot flow out of the water spray valve, the water pressure in the water pipe continuously increases, when the acting force generated by the water pressure is greater than the spring force, the valve core is opened, the water flows back to the water storage tank through the return;

2. the Y-shaped water pipe and the backflow pipe are placed in the through hole, the clamping block which rotates the rotating part to the rotating part is in clamping fit with the clamping groove in the fixing part, so that the Y-shaped water pipe and the backflow pipe are fixed;

3. after the valve core of the overflow valve is opened, water flows into the return pipe, the flow velocity sensor senses the variable quantity, the variable quantity is converted into an electric signal to be output to the alarm, and the alarm gives an alarm to remind a worker of misoperation.

Drawings

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

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view of the fixing base of the present invention;

fig. 4 is a partial structural schematic diagram of the present invention.

In the figure, 1, a base; 11. fixing a bracket; 12. a fixed seat; 121. a fixed part; 1211. a clamping groove; 122. a rotating part; 1221. a clamping block; 123. a rubber ring; 2. a water storage tank; 3. a high pressure water pump; 31. a trident water pipe; 4. a water spray valve; 5. a water intake pipe; 51. a seal ring; 6. an overflow valve; 61. a return pipe; 611. a flow rate sensor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a pressure relief device for preventing the over-high pressure of a water pipe of a high pressure cleaning vehicle comprises a base 1, a water storage tank 2 fixed on the base 1, a high pressure water pump 3, a water spray valve 4 and a water intake pipe 5 communicated with the high pressure water pump 3. 3 water outlet end intercommunications of high pressure water pump have trident water pipe 31, the one end of trident water pipe 31 output communicates to water jet 4, the other end intercommunication of trident water pipe 31 has overflow valve 6, overflow valve 6 is the direct action type overflow valve of the precompression volume of adjustable spring, the precompression volume of pressure regulating screw adjusting spring, can set the size of 6 overflow pressure values of overflow valve, make overflow valve 6 open when water pressure reaches predetermined water pressure, avoid overflow valve 6 to open when normal work or still not open when needs the pressure release.

The overflow valve 6 is communicated with a return pipe 61, and the return pipe 61 is communicated with the water storage tank 2. The trifurcate water pipe 31 and the return pipe 61 are single-wall corrugated water pipes, water in the pipes passes through the high-pressure water pump 3, the water pressure in the pipes is high, and the single-wall corrugated water pipes have certain ductility, so that certain water pressure can be buffered.

Referring to fig. 2, a flow rate sensor 611 is arranged inside the return pipe 61, the flow rate sensor 611 is electrically connected with the alarm, after the valve core of the overflow valve 6 is opened, water flows into the return pipe 61, and the flow rate sensor 611 senses the variation and converts the variation into an electrical signal to output to the alarm.

Referring to fig. 1 and 3, fixedly connected with fixed bolster 11 is gone up to the railway carriage bottom, fixedly connected with a plurality of fixing base 12 on the fixed bolster 11, it has the clearing hole to open on the fixing base 12, trident water pipe 31 and back flow 61 run through the clearing hole, fixing base 12 is located clearing hole rigidity and is connected with rubber circle 123, rubber circle 123 makes the flexible contact between pipeline and the fixing base 12, when the pipeline has the tendency of rocking, plays the guard action to the pipeline. Fixing base 12 fixed connection is on fixed bolster 11, fixing base 12 is including fixed part 121 with fixed bolster 11 fixed connection and articulate the rotation portion 122 on fixed part 121, fixed part 121 keeps away from one of pin joint and serves to open the joint groove 1211 that has the L shape, rotation portion 122 keeps away from one end fixedly connected with of pin joint and joint piece 1221 of joint groove 1211 cooperation joint, water pressure in the pipeline is great, when the interior high pressure water that flows of pipeline, the pipeline probably appears rocking, after having set up fixing base 12, fix the pipeline and make the pipeline be difficult to rock.

Referring to fig. 4, the water intake pipe 5 extends from the top of the water storage tank 2 to the bottom of the water storage tank 2 through the water storage tank 2, and draws water upwards from the bottom to reduce the water level so that the water intake pipe can still be located below the liquid level, thereby avoiding the high-pressure water pump 3 from idling, the connection between the water intake pipe 5 and the water storage tank 2 and the connection between the return pipe 61 and the water storage tank 2 are provided with the sealing rings 51, and the sealing rings 51 are used for increasing the air tightness, thereby being beneficial to reducing the water leakage at the connection.

The implementation principle of the embodiment is as follows:

the precompression volume of the spring is adjusted through the pressure adjusting screw of the overflow valve 6 before use, so that the overflow pressure value of the overflow valve 6 is adjusted, the overflow valve 6 is opened when the water pressure reaches the preset water pressure, and the overflow valve 6 is prevented from being opened in normal work or not opened when pressure is required to be relieved.

When the high-pressure water pump 3 works, water in the water storage tank 2 flows out to the high-pressure water pump 3 through the water taking pipe 5 and then flows to the three-way water pipe 31, the water generates an acting force on the valve core, the direction of the acting force is opposite to the direction of the spring force in the overflow valve 6, when the water pressure is lower than the set pressure of the overflow valve 6, the valve core is not opened, the water flows out from the water spraying valve 4 when the water spraying valve 4 flows out from the water spraying valve 4, when the high-pressure water pump 3 continues to work while the water spraying valve 4 is closed due to misoperation of workers, the water cannot flow out from the water spraying valve 4, the water pressure in the water pipe continuously increases and becomes large, when the acting force generated by the water pressure is larger than the spring force, the valve core is opened, the water flows back to the water storage.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a prevent pressure relief device that high pressure sewer flushing car water pipe pressure is too high, includes base (1), fixes water storage tank (2), high pressure water pump (3), water spout valve (4) and intercommunication high pressure water pump (3) on base (1) intake pipe (5), its characterized in that: the water outlet end of the high-pressure water pump (3) is communicated with a three-fork water pipe (31), one end of the output end of the three-fork water pipe (31) is communicated to the water spraying valve (4), the other end of the three-fork water pipe (31) is communicated with an overflow valve (6), the overflow valve (6) is communicated with a return pipe (61), and the return pipe (61) is communicated to the water storage tank (2).

2. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 1, wherein: the overflow valve (6) is a direct-acting overflow valve capable of adjusting the pre-compression amount of the spring.

3. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 1, wherein: the trifurcate water pipe (31) and the return pipe (61) are both single-wall corrugated water pipes.

4. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 1, wherein: be provided with fixed bolster (11) on base (1), a plurality of fixing base (12) of fixedly connected with on fixed bolster (11), it has the clearing hole to open on fixing base (12), trident water pipe (31) and back flow (61) run through the clearing hole, fixing base (12) including with fixed bolster (11) fixed connection fixed part (121) and articulate rotation portion (122) on fixed part (121), one of pin joint is kept away from in fixed part (121) serves and opens joint groove (1211) that have the L shape, rotation portion (122) keep away from the one end fixedly connected with of pin joint with joint piece (1221) of joint groove (1211) cooperation joint.

5. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 4, wherein: the fixed seat (12) is fixedly connected with a rubber ring (123) at the position of the through hole.

6. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 1, wherein: the flow rate sensor (611) is arranged in the return pipe (61), and the flow rate sensor (611) is electrically connected with the alarm.

7. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 1, wherein: the water taking pipe (5) penetrates through the water storage tank (2) from the top of the water storage tank (2) to extend to the bottom of the water storage tank (2).

8. The pressure relief device for preventing over-pressure of a water pipe of a high pressure cleaning vehicle according to claim 1, wherein: and sealing rings (51) are arranged at the joints of the water taking pipe (5) and the return pipe (61) and the water storage tank (2).