CN110878574B - Water supply system for preventing water pipe from frost cracking - Google Patents
Water supply system for preventing water pipe from frost cracking Download PDFInfo
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- CN110878574B CN110878574B CN201911210470.XA CN201911210470A CN110878574B CN 110878574 B CN110878574 B CN 110878574B CN 201911210470 A CN201911210470 A CN 201911210470A CN 110878574 B CN110878574 B CN 110878574B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/04—Domestic or like local pipe systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/10—Devices preventing bursting of pipes by freezing
Abstract
The invention belongs to the technical field of water supply systems, and particularly relates to a water supply system for preventing a water pipe from frost cracking. The water supply system designed by the invention drains water in a first mode through the pneumatic pump, and the drained water is only a part of water sources remained in the hot water pipe and the cold water pipe; the second is to discharge water by means of a piston, and the discharged water is part of water sources remained in the hot water pipe and the cold water pipe and a small part of water sources originally existing in the first piston shell; therefore, the water supply system designed by the invention can not cause the waste of a large amount of water sources under the condition of preventing frost cracking of drained water.
Description
Technical Field
The invention belongs to the technical field of water supply systems, and particularly relates to a water supply system for preventing a water pipe from frost cracking.
Background
At present, for some northern remote poor areas, living environments of stationed troops, public welfare organizations, construction units and the like are severe, bathing of workers can be completed within a specified time, and the water supply system is in a closed state within other times; however, when a water pipe used in a general water supply system is connected to a pipeline in a bath room, except for a part of the water pipe located outside, a wrapping method is adopted for anti-freezing, but anti-freezing measures are not taken for the indoor water pipe, when the water pipe is not used for a long time in winter, heat is not supplied indoors, and the water pipe in the room is possibly frost-cracked due to water which is not discharged; according to the water supply system designed by the invention, after the specified bathing time is over, the worker can close all the water source input ends, and then discharge the residual water in the cold water pipe and the hot water pipe through the flowing gas, so that the residual water is prevented from remaining in each water pipe and being stopped for a long time to cause frost cracking of the water pipes in a low-temperature environment.
The invention designs a water supply system for preventing a water pipe from being frozen and cracked, and solves the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a water supply system for preventing a water pipe from frost cracking, which is realized by adopting the following technical scheme.
A water supply system for preventing a water pipe from frost cracking comprises a water heater, a water outlet pipe, a spray head, a connecting box, a hot water pipe, a cold water pipe, a hot water switch, a water heater inlet switch, a cold water switch, a water inlet pipe and a water outlet switch, wherein one end of the cold water pipe is installed at the water source input end of the water heater, one end of the cold water pipe close to the water heater is provided with the water inlet pipe, and the water inlet pipe is connected with an external water source; one end of the hot water pipe is arranged at the water source output end of the water heater; the other ends of the cold water pipe and the hot water pipe are respectively communicated with a connecting box arranged in the bath room; one end of the water outlet pipe is arranged at the water source output end on the connecting box, and the other end of the water outlet pipe is provided with a spray head; the water outlet pipe is also provided with a water outlet switch for controlling the connection of the water outlet pipe; a water heater inlet switch box cold water switch is also arranged on the cold water pipe; the cold water switch and the water heater inlet switch are respectively positioned at two sides of the water inlet pipe; the water heater inlet switch is positioned between the water inlet pipe and the water source input end of the water heater and controls whether the water heater adds water or not; the cold water switch controls the connection of the cold water pipe; the hot water pipe is also provided with a hot water switch for controlling the connection of the hot water pipe; the method is characterized in that: and after all people have a bath, the hot water switch, the water heater inlet switch and the cold water switch are firstly closed, the water outlet switch is opened, and then the drainage devices are controlled to work to drain residual water in the cold water pipe and the hot water pipe.
When the water heater is not used, the inlet switch of the water heater is always in an open state, the hot water switch is in a closed state, the cold water switch is in a closed state, and the water heater is always in a heat preservation state; when the water heater is used, the hot water switch of the water heater is turned on, the cold water switch is turned on, hot water in the water heater flows out through the hot water switch and flows into the hot water pipe, hot water in the hot water pipe flows into the connecting box through the hot water pipe, an external water source flows into the cold water pipe through the cold water switch and flows into the connecting box through the cold water pipe; then, people turn on a water outlet switch and adjust the proportion of hot water and cold water through a connecting box; so that the mixed water flows into the water outlet pipe through the water outlet switch and is sprayed out by the spray head.
As a further improvement of the technology, the drainage device is a pneumatic pump, an air pump pipe is installed at the output end of the pneumatic pump, two ends of the connecting pipe are respectively connected with the hot water pipe and the cold water pipe in a one-to-one correspondence manner, and a first one-way valve is respectively installed at the connection position; the position of the connecting pipe connected with the hot water pipe is positioned between the hot water switch and the connecting box and is close to the hot water switch; the connecting position of the connecting pipe and the cold water pipe is positioned between the cold water switch and the connecting box and is close to the cold water switch; the air pump pipe is connected with the connecting pipe through a three-way valve; and an air pump switch for controlling the connection of the air pump pipe is also arranged on the air pump pipe.
According to the water supply system designed by the invention, the water supply system is in a closed state in other time when the worker bathes in a specified time, and particularly in northern areas with severe environment and low temperature; after all people have a bath, firstly closing the hot water switch, the water heater inlet switch and the cold water switch, opening the water outlet switch, then opening the air pump switch, controlling the air pressure pump to work, inputting high-pressure air generated by the air pressure pump into the cold water pipe and the hot water pipe, and discharging residual water in the cold water pipe and the hot water pipe through the flowing pressure of the air; prevent that there is the residual water to remain in each water pipe, long-time the outage leads to the water pipe to freeze and split under low temperature environment.
As a further improvement of the technology, the drainage device is an adjusting mechanism, and the hot water pipe and the cold water pipe are respectively provided with an adjusting mechanism; the mounting position of the adjusting mechanism on the hot water pipe is positioned between the hot water switch and the connecting box and close to the hot water switch; the mounting position of the adjusting mechanism on the cold water pipe is positioned between the cold water switch and the connecting box and close to the cold water switch.
For the adjusting mechanism arranged on the hot water pipe, the adjusting mechanism comprises a first limiting mechanism, an installation block, a second limiting mechanism, a limiting rod, a limiting connecting rod, a liquid piston and a gas piston, wherein the liquid piston consists of a second piston plate, a second piston shell and a first compression spring; one end of the connecting water pipe is arranged at the output end of the second piston shell, and the other end of the connecting water pipe is connected with the hot water pipe through a three-way valve; one end of the second transmission rod is fixedly arranged at the upper end of the second piston plate, and the other end of the second transmission rod penetrates through the second piston shell and is positioned on the outer side of the second piston shell; the gas piston consists of a first piston plate, a first piston shell and a second compression spring, the first piston plate is arranged in the first piston shell in a sliding fit manner, and the second compression spring is arranged between the upper end surface of the first piston plate and the upper end surface in the first piston shell; one end of the exhaust pipe is arranged at the gas output end of the first piston shell, and the other end of the exhaust pipe is connected with the hot water pipe through a three-way valve; a third one-way valve is arranged on the exhaust pipe; one end of the air inlet pipe is arranged at the air input end of the first piston shell, the other end of the air inlet pipe is communicated with the outside air, and the air inlet pipe is provided with a second one-way valve; one end of the first transmission rod is positioned at the upper end of the first piston plate, and the other end of the first transmission rod penetrates through the first piston shell and is positioned at the outer side of the first piston shell; the first transmission rod is in contact fit with the first piston plate; one end of the first transmission rod, which is positioned outside the first piston shell, is connected with one end of the second transmission rod, which is positioned outside the second piston shell, through a limiting connecting rod; one end of the third transmission rod is fixedly arranged on the first piston plate, and the other end of the third transmission rod penetrates through the first piston shell and is positioned outside the first piston shell; the second one-way valve is used for preventing the gas sucked into the second piston shell from flowing out through the air inlet pipe, and the third one-way valve is used for preventing the water in the water pipe from flowing into the second piston shell.
The mounting block is provided with two mounting grooves which are distributed up and down, the inner end surfaces of the two mounting grooves are provided with communicated guide sliding grooves, and the first limiting mechanism and the second limiting mechanism are respectively mounted in the two mounting grooves.
The limiting connecting rod moves to the uppermost side and then is limited by the first limiting mechanism, the limiting rod moves to the lowermost side under the pre-pressure of the second spring and then extrudes the limiting block in the second limiting mechanism, the limiting blocks in the first limiting mechanism and the second limiting mechanism are connected through a connecting rod, and the connecting rod is in sliding fit with the guide sliding chute; the limiting blocks in the first limiting mechanism and the second limiting mechanism are kept synchronous in the moving process through the connecting rod.
When the hot water switch, the water heater inlet switch and the cold water switch are turned on, and the water outlet switch is turned on, the limiting rod and the limiting connecting rod are positioned between the second limiting mechanism and the first limiting mechanism; when the hot water switch, the water heater inlet switch and the cold water switch are turned on and the water outlet switch is turned off, the limiting connecting rod is limited by the first limiting mechanism.
As a further improvement of the technology, the first limiting mechanism comprises a first limiting block, a first return spring, a first pull rod and a first limiting shell, wherein the first limiting shell is installed in an installation groove formed in the installation block, one end of the first limiting shell, which is located in the installation groove, is provided with a circular hole, one end of the first limiting block is provided with an inclined surface, the other end of the first limiting block is installed in the first limiting shell in a sliding fit manner, and the first return spring is installed between one end of the first limiting block, which is located in the first limiting shell, and the inner end surface of the first limiting shell; one end of the first pull rod is fixedly arranged at one end of the first limiting block, which is positioned in the first limiting shell, and the other end of the first pull rod penetrates through a circular hole formed in the first limiting shell and is positioned outside the first limiting shell; the first limiting block is matched with the limiting connecting rod.
The second limiting mechanism comprises a second limiting block, a second reset spring, a second pull rod and a second limiting shell, wherein the second limiting shell is installed in an installation groove formed in the installation block, one end, located in the installation groove, of the second limiting shell is provided with a circular hole, one end of the second limiting block is provided with an inclined surface, the other end of the second limiting block is installed in the second limiting shell in a sliding fit mode, and the second reset spring is installed between one end, located in the second limiting shell, of the second limiting block and the inner end face of the second limiting shell; one end of a second pull rod is fixedly arranged at one end of a second limiting block positioned in the second limiting shell, and the other end of the second pull rod penetrates through a circular hole formed in the second limiting shell and is positioned outside the second limiting shell; the second limiting block is matched with the limiting rod.
The end of the first pull rod, which is positioned outside the first limit shell, is connected with the end of the second pull rod, which is positioned outside the second limit shell, through a connecting rod.
As a further improvement of the technology, two second sealing rings are uniformly arranged on the outer circular surface of the first piston plate from top to bottom; the second sealing ring is used for sealing the sliding of the first piston plate; two first sealing rings are uniformly arranged on the outer circular surface of the second piston plate from top to bottom; the first sealing ring is used for sealing the sliding of the second piston plate.
As a further improvement of the technology, two guide grooves are symmetrically formed in two side surfaces in the first limiting shell and the second limiting shell, two first guide blocks are symmetrically arranged on two sides of the first limiting block, and the first limiting block is arranged in the first limiting shell through the sliding fit of the two first guide blocks and the two guide grooves formed in the first limiting shell; two second guide blocks are symmetrically arranged on two sides of the second limiting block, and the second limiting block is arranged in the second limiting shell through the sliding fit of the two second guide blocks and the two guide grooves formed in the second limiting shell.
As a further improvement of the present technology, the first return spring and the second return spring are compression springs.
As a further improvement of the present technology, the second compression spring has a pre-pressure, and under the pre-pressure, when the hot water switch, the water heater inlet switch and the cold water switch are turned on, and the water outlet switch is turned on, the limiting rod and the limiting connecting rod are located between the second limiting mechanism and the first limiting mechanism.
As a further improvement of the technology, the limiting connecting rod is fixedly arranged on the first transmission rod and the second transmission rod in a welding mode.
As a further improvement of the technology, the inclination angle of the inclined plane of the first limiting block is 45 degrees, and the inclination angle of the inclined plane of the second limiting block is 45 degrees.
Compared with the traditional water supply system technology, the beneficial effects of the design of the invention are as follows:
1. the water supply system designed by the invention is realized by two different methods of the pneumatic pump and the piston, and when all people have a bath, the residual water in the cold water pipe and the residual water in the hot water pipe are discharged by the flowing pressure of the gas, so that the residual water is prevented from remaining in each water pipe and being stopped for a long time to cause the frost cracking of the water pipes in a low-temperature environment.
2. The water supply system designed by the invention drains water in a first mode through the pneumatic pump, and the drained water is only a part of water sources remained in the hot water pipe and the cold water pipe; the second is to discharge water by means of a piston, and the discharged water is part of water sources remained in the hot water pipe and the cold water pipe and a small part of water sources originally existing in the first piston shell; therefore, the water supply system designed by the invention can not cause the waste of a large amount of water sources under the condition of preventing frost cracking of drained water.
3. The water is drained by the pneumatic pump, extra electric energy is consumed, the further improvement scheme of the invention utilizes the water pressure in the water pipe to push the piston to store energy for draining, extra electric energy is not consumed, and the water draining device has a strong using effect.
Drawings
Fig. 1 is an external view of a first water supply system.
Fig. 2 is an external view of a second water supply system.
Fig. 3 is an external view of the adjusting mechanism.
Fig. 4 is a schematic view of the installation of the first and second limiting mechanisms.
Fig. 5 is a schematic structural diagram of the first limiting mechanism and the second limiting mechanism.
Fig. 6 is a schematic view of a liquid piston and a gas piston in combination.
Fig. 7 is a schematic view of a liquid piston and a gas piston.
Number designation in the figures: 1. a water heater; 2. a pneumatic pump; 4. an air pump switch; 5. an air pump tube; 6. a water outlet pipe; 7. a spray head; 8. a water outlet switch; 9. a connection box; 10. a hot water pipe; 11. a cold water pipe; 12. a connecting pipe; 13. a hot water switch; 14. a water heater inlet switch; 15. a cold water switch; 16. a first check valve; 17. an adjustment mechanism; 18. a water inlet pipe; 19. a first limit mechanism; 20. mounting blocks; 21. a second limiting mechanism; 22. a limiting rod; 23. a limiting connecting rod; 24. a liquid piston; 25. a gas piston; 26. mounting grooves; 27. a guide chute; 28. a connecting rod; 29. a first stopper; 30. a first guide block; 31. a first return spring; 32. a first pull rod; 33. a second pull rod; 34. a second return spring; 35. a second limiting block; 36. a second guide block; 37. a first limit case; 38. a second limit shell; 39. a circular hole; 40. a guide groove; 41. a first drive lever; 42. a second transmission rod; 43. a first piston plate; 44. a first piston housing; 45. an exhaust pipe; 46. connecting a water pipe; 47. a second piston plate; 48. a first seal ring; 49. a second piston housing; 50. a first compression spring; 51. a third transmission rod; 52. a second compression spring; 53. a second seal ring; 54. a second one-way valve; 55. an air inlet pipe; 56. and a third one-way valve.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, the water heater comprises a water heater 1, a water outlet pipe 6, a spray head 7, a connecting box 9, a hot water pipe 10, a cold water pipe 11, a hot water switch 13, a water heater inlet switch 14, a cold water switch 15, a water inlet pipe 18 and a water outlet switch 8, wherein one end of the cold water pipe 11 is installed at the water source input end of the water heater 1, the water inlet pipe 18 is installed at one end of the cold water pipe 11 close to the water heater 1, and the water inlet pipe 18 is connected with an external; one end of the hot water pipe 10 is arranged at the water source output end of the water heater 1; the other ends of the cold water pipe 11 and the hot water pipe 10 are respectively communicated with a connecting box 9 arranged in the bath room; one end of the water outlet pipe 6 is arranged at the water source output end of the connecting box 9, and the other end of the water outlet pipe 6 is provided with the spray head 7; the water outlet pipe 6 is also provided with a water outlet switch 8 for controlling the connection of the water outlet pipe 6; a water heater inlet switch 14 and a cold water switch 15 are also arranged on the cold water pipe 11; the cold water switch 15 and the water heater inlet switch 14 are respectively positioned at two sides of the water inlet pipe 18; the water heater inlet switch 14 is positioned between the water inlet pipe 18 and the water source input end of the water heater 1, and the water heater inlet switch 14 controls whether the water heater 1 adds water or not; the cold water switch 15 controls the connection of the cold water pipe 11; the hot water pipe 10 is also provided with a hot water switch 13 for controlling the connection of the hot water pipe 10; the method is characterized in that: and after all people have a bath, the hot water switch 13, the water heater inlet switch 14 and the cold water switch 15 are firstly closed, the water outlet switch 8 is opened, and then the drainage devices are controlled to work to drain the residual water in the cold water pipe 11 and the hot water pipe 10.
When the water heater is not used, the water heater inlet switch 14 is always in an open state, the hot water switch 13 is in a closed state, the cold water switch 15 is in a closed state, and the water heater 1 is always in a heat preservation state; when the water heater is used, the hot water switch 13 of the water heater 1 is firstly opened, the cold water switch 15 is opened, hot water in the water heater 1 flows out through the hot water switch 13 and flows into the hot water pipe 10, hot water in the hot water pipe 10 flows into the connecting box 9 through the hot water pipe 10, an external water source flows into the cold water pipe 11 through the cold water switch 15 and flows into the connecting box 9 through the cold water pipe 11; then, people turn on the water outlet switch 8 and adjust the proportion of hot water and cold water through the connecting box 9; so that the mixed water flows into the water outlet pipe 6 through the water outlet switch 8 and is sprayed out by the spray head 7.
As shown in fig. 1, the drainage device is a pneumatic pump 2, an air pump pipe 5 is installed at an output end of the pneumatic pump 2, two ends of a connecting pipe 12 are respectively connected with a hot water pipe 10 and a cold water pipe 11 in a one-to-one correspondence manner, and a first check valve 16 is installed at the connection position; the position where the connecting pipe 12 is connected with the hot water pipe 10 is positioned between the hot water switch 13 and the connecting box 9 and is close to the hot water switch 13; the connecting position of the connecting pipe 12 and the cold water pipe 11 is positioned between the cold water switch 15 and the connecting box 9 and is close to the cold water switch 15; the air pump pipe 5 is connected with the connecting pipe 12 through a three-way valve; the air pump pipe 5 is also provided with an air pump switch 4 for controlling the connection of the air pump pipe 5.
According to the water supply system designed by the invention, the water supply system is in a closed state in other time when the worker bathes in a specified time, and particularly in northern areas with severe environment and low temperature; after bathing of all people is finished, firstly, the hot water switch 13, the water heater inlet switch 14 and the cold water switch 15 are closed, the water outlet switch 8 is opened, then the air pump switch 4 is opened, the pneumatic pump 2 is controlled to work, high-pressure gas generated by the pneumatic pump 2 is input into the cold water pipe 11 and the hot water pipe 10, and residual water in the cold water pipe 11 and the hot water pipe 10 is discharged through the flowing pressure of the gas; prevent that there is the residual water to remain in each water pipe, long-time the outage leads to the water pipe to freeze and split under low temperature environment.
As shown in fig. 1, the drainage device is an adjusting mechanism 17, and the hot water pipe 10 and the cold water pipe 11 are respectively provided with an adjusting mechanism 17; the installation position of the adjusting mechanism 17 on the hot water pipe 10 is positioned between the hot water switch 13 and the connecting box 9 and close to the hot water switch 13; the mounting position of the adjusting mechanism 17 on the cold water pipe 11 is between the cold water switch 15 and the connection box 9 and close to the cold water switch 15.
As shown in fig. 3, for the adjusting mechanism 17 installed on the hot water pipe 10, the adjusting mechanism 17 includes a first limiting mechanism 19, an installation block 20, a second limiting mechanism 21, a limiting rod 22, a limiting connecting rod 23, a liquid piston 24, and a gas piston 25, wherein as shown in fig. 6 and 7, the liquid piston 24 is composed of a second piston plate 47, a second piston housing 49, and a first compression spring 50, the second piston plate 47 is installed in the second piston housing 49 by sliding fit, and the first compression spring 50 is installed between the upper end surface of the second piston plate 47 and the upper end surface in the second piston housing 49; one end of the connecting water pipe 46 is installed at the output end of the second piston housing 49, and the other end of the connecting water pipe 46 is connected with the hot water pipe 10 through a three-way valve; one end of the second transmission rod 42 is fixedly installed at the upper end of the second piston plate 47, and the other end of the second transmission rod 42 passes through the second piston housing 49 and is located at the outer side of the second piston housing 49; the gas piston 25 is composed of a first piston plate 43, a first piston housing 44 and a second compression spring 52, the first piston plate 43 is installed in the first piston housing 44 by sliding fit, and the second compression spring 52 is installed between the upper end surface of the first piston plate 43 and the upper end surface in the first piston housing 44; one end of the exhaust pipe 45 is installed at the gas output end of the first piston housing 44, and the other end of the exhaust pipe 45 is connected with the hot water pipe 10 through a three-way valve; a third check valve 56 is mounted on the exhaust pipe 45; one end of an air inlet pipe 55 is arranged at the air input end of the first piston shell 44, the other end of the air inlet pipe 55 is communicated with the outside air, and a second one-way valve 54 is arranged on the air inlet pipe 55; one end of the first transmission rod 41 is located at the upper end of the first piston plate 43, and the other end of the first transmission rod 41 passes through the first piston housing 44 and is located outside the first piston housing 44; the first transmission rod 41 is in contact fit with the first piston plate 43; one end of the first transmission rod 41 outside the first piston shell 44 is connected with one end of the second transmission rod 42 outside the second piston shell 49 through a limiting connecting rod 23; one end of the third transmission rod 51 is fixedly installed on the first piston plate 43, and the other end of the third transmission rod 51 penetrates through the first piston shell 44 and is located outside the first piston shell 44; the second check valve 54 functions to prevent the gas sucked into the second piston housing 49 from flowing out through the intake pipe 55, and the third check valve 56 functions to prevent the water in the water pipe from flowing into the second piston housing 49.
The mounting block 20 is provided with two mounting grooves 26 distributed up and down, the inner end surfaces of the two mounting grooves 26 are provided with communicated guide sliding grooves 27, and the first limiting mechanism 19 and the second limiting mechanism 21 are respectively mounted in the two mounting grooves 26.
The limiting connecting rod 23 is limited by the first limiting mechanism 19 after moving to the uppermost side, the limiting rod 22 extrudes the limiting block in the second limiting mechanism 21 after the limiting rod 22 moves to the lowermost side under the pre-pressure of the second spring, the limiting blocks in the first limiting mechanism 19 and the second limiting mechanism 21 are connected through a connecting rod 28, and the connecting rod 28 is in sliding fit with the guide sliding chute 27; the limit blocks in the first limit mechanism 19 and the second limit mechanism 21 are kept synchronous in the moving process through the connecting rod 28.
When the hot water switch 13, the water heater inlet switch 14 and the cold water switch 15 are turned on, and the water outlet switch 8 is turned on, the limiting rod 22 and the limiting connecting rod 23 are positioned between the second limiting mechanism 21 and the first limiting mechanism 19; when the hot water switch 13, the water heater inlet switch 14 and the cold water switch 15 are turned on and the water outlet switch 8 is turned off, the limit connecting rod 23 is limited by the first limit mechanism 19.
As shown in fig. 4 and 5, the first limiting mechanism 19 includes a first limiting block 29, a first return spring 31, a first pull rod 32, and a first limiting shell 37, wherein the first limiting shell 37 is installed in the installation groove 26 formed on the installation block 20, one end of the first limiting shell 37 located in the installation groove 26 has a circular hole 39, one end of the first limiting block 29 has an inclined surface, the other end of the first limiting block 29 is installed in the first limiting shell 37 by sliding fit, and the first return spring 31 is installed between one end of the first limiting block 29 located in the first limiting shell 37 and the inner end surface of the first limiting shell 37; one end of the first pull rod 32 is fixedly installed at one end of the first limiting block 29 positioned in the first limiting shell 37, and the other end of the first pull rod 32 penetrates through a circular hole 39 formed in the first limiting shell 37 and is positioned outside the first limiting shell 37; the first stopper 29 is engaged with the stopper link 23.
As shown in fig. 4 and 5, the second limiting mechanism 21 includes a second limiting block 35, a second return spring 34, a second pull rod 33, and a second limiting shell 38, wherein the second limiting shell 38 is installed in the installation groove 26 formed in the installation block 20, one end of the second limiting shell 38 located in the installation groove 26 has a circular hole 39, one end of the second limiting block 35 has an inclined surface, the other end of the second limiting block 35 is installed in the second limiting shell 38 by sliding fit, and the second return spring 34 is installed between one end of the second limiting block 35 located in the second limiting shell 38 and the inner end surface of the second limiting shell 38; one end of the second pull rod 33 is fixedly installed at one end of the second limiting block 35 located in the second limiting shell 38, and the other end of the second pull rod 33 penetrates through a circular hole 39 formed in the second limiting shell 38 and is located outside the second limiting shell 38; the second stopper 35 is engaged with the stopper rod 22.
The end of the first pull rod 32 located outside the first limit shell 37 is connected with the end of the second pull rod 33 located outside the second limit shell 38 through the connecting rod 28.
As shown in fig. 7, two second seal rings 53 are uniformly installed on the outer circumferential surface of the first piston plate 43 up and down; the second seal ring 53 functions to seal the sliding movement of the first piston plate 43; two first sealing rings 48 are uniformly arranged on the outer circular surface of the second piston plate 47 up and down; the first seal ring 48 functions to seal the sliding movement of the second piston plate 47.
As shown in fig. 5, two guide grooves 40 are symmetrically formed on two side surfaces in the first limiting shell 37 and the second limiting shell 38, two first guide blocks 30 are symmetrically installed on two sides of the first limiting block 29, and the first limiting block 29 is installed in the first limiting shell 37 through the sliding fit between the two first guide blocks 30 and the two guide grooves formed in the first limiting shell 37; two second guide blocks 36 are symmetrically installed on two sides of the second limiting block 35, and the second limiting block 35 is installed in the second limiting shell 38 through sliding fit of the two second guide blocks 36 and two guide grooves formed in the second limiting shell 38.
The first return spring 31 and the second return spring 34 are compression springs.
The second compression spring 52 has a preload, and under this preload, when the hot water switch 13, the hot water inlet switch 14, and the cold water switch 15 are opened, and the water outlet switch 8 is opened, the limit rod 22 and the limit link 23 are located between the second limit mechanism 21 and the first limit mechanism 19.
The limit link 23 is fixedly mounted on the first transmission rod 41 and the second transmission rod 42 by welding.
The inclination angle of the inclined plane of the first stopper 29 is 45 degrees, and the inclination angle of the inclined plane of the second stopper 35 is 45 degrees.
The specific working process is as follows: when the water supply system designed by the invention is used, when the water supply system is not used, the inlet switch 14 of the water heater is always in an open state, the hot water switch 13 is in a closed state, the cold water switch 15 is in a closed state, and the water heater 1 is always in a heat preservation state; when the water heater is used, the hot water switch 13 of the water heater 1 is firstly opened, the cold water switch 15 is opened, hot water in the water heater 1 flows out through the hot water switch 13 and flows into the hot water pipe 10, hot water in the hot water pipe 10 flows into the connecting box 9 through the hot water pipe 10, an external water source flows into the cold water pipe 11 through the cold water switch 15 and flows into the connecting box 9 through the cold water pipe 11; then, people turn on the water outlet switch 8 and adjust the proportion of hot water and cold water through the connecting box 9; so that the mixed water flows into the water outlet pipe 6 through the water outlet switch 8 and is sprayed out by the spray head 7.
When drainage is required, there are two different methods,
first 2 types of pneumatic pump, after the bathing of whole personnel is accomplished, at first control hot water switch 13, water heater import switch 14 and cold water switch 15 close, it opens to go out water switch 8, then open air pump switch 4, control pneumatic pump 2 works, pneumatic pump 2 produces in high-pressure gas input cold water pipe 11 and the hot-water line 10, discharge through remaining water in gaseous flow pressure in with cold water pipe 11 and the hot-water line 10, it remains in each water pipe to prevent to have remaining water, stop for a long time, lead to the water pipe frost crack under low temperature environment.
A second piston type, when the hot water pipe 10 and the cold water pipe 11 are in a connected state, water in the corresponding water pipe flows into a part of the first piston housing 44 of the liquid piston 24 through the connecting water pipe 46, so that the first piston plate 43 in the first piston housing 44 is kept at a certain height under the thrust of the water, and at the certain height, the limit rod 22 connected to the first piston plate 43 through the third transmission rod 51 is located on the upper side of the second limit block 35 in the second limit mechanism 21; the second compression spring 52 has a certain pre-pressure; when the water outlet switch 8 is closed and the hot water inlet switch, the hot water switch 13 and the cold water switch 15 are in an open state, the water pressures in the cold water pipe 11 and the hot water pipe 10 are increased, and the water level flowing into the first piston shell 44 through the connecting water pipe 46 is continuously increased, the water level is increased to push the first piston plate 43 to move upwards, the first piston plate 43 moves upwards to drive the third transmission rod 51 to move upwards, the third transmission rod 51 moves upwards to drive the limiting rod 22 to move upwards, and meanwhile, the second compression spring 52 is continuously compressed; the first piston plate 43 moves upwards and simultaneously drives the first transmission rod 41 to move upwards, the first transmission rod 41 moves upwards to drive the limiting connecting rod 23 to move upwards, and the limiting connecting rod 23 moves upwards to drive the second transmission rod 42 to move upwards; the second transmission rod 42 moves upwards to drive the second piston plate 47 to move upwards, the second piston plate 47 moves upwards to generate negative pressure in the second piston shell 49, and outside air enters the second piston shell 49 through the air inlet pipe 55 to be stored; when the limiting connecting rod 23 moves to contact with the first limiting block 29, under the action of the upper inclined plane of the first limiting block 29, the limiting connecting rod 23 can extrude the first limiting block 29 to enable the first limiting block 29 to move towards the first limiting shell 37; after the limiting connecting rod 23 passes over the first limiting block 29, the first limiting block 29 moves out again under the action of the first return spring 31 to limit the limiting connecting rod 23, namely limit the second piston plate 47.
When water is drained, the hot water inlet switch, the hot water switch 13 and the cold water switch 15 are closed, the water outlet switch 8 is opened, the water pressure in the cold and hot water pipe 10 is rapidly reduced to be close to zero, at the moment, after the water in the first piston shell 44 loses pressure, the first piston plate 43 moves downwards under the action of the second compression spring 52, and because the lower end of the first transmission rod 41 is in contact fit with the first piston plate 43, when the first piston plate 43 moves downwards, the first transmission rod 41 cannot be influenced, namely, the second piston plate 47 connected by the first transmission rod 41, the limiting connecting rod 23 and the second transmission rod 42 cannot be influenced, and is still in a limiting state by the first limiting mechanism 19; the first piston plate 43 moves downwards to drive the third transmission rod 51 to move downwards, the third transmission rod 51 moves downwards to drive the limiting rod 22 to move downwards, the limiting rod 22 moves downwards to be in contact with the second limiting block 35 in the second limiting mechanism 21 under the pre-pressure of the second compression spring 52, and the limiting rod 22 extrudes the second limiting block 35 to enable the second limiting block 35 to move towards the second limiting shell 38 under the action of the upper inclined surface of the second limiting block 35; the second limiting block 35 moves to drive the second pull rod 33 to move, the second pull rod 33 moves to drive the connecting rod 28 to move along the guide sliding groove 27, the connecting rod 28 moves to drive the first pull rod 32 to move, the first pull rod 32 moves to drive the first limiting block 29 to move, so that the first limiting block 29 loses the limiting on the limiting connecting rod 23, namely loses the limiting on the second piston plate 47, at the moment, the second piston plate 47 moves downwards under the action of the first compression spring 50, the second piston plate 47 moves downwards to extrude the gas stored in the second piston shell 49, so that the gas flows into the corresponding water pipe, and the residual water in the water pipe is discharged through the flowing pressure of the gas; after the next water flow in the water pipe, the first piston plate 43 in the first piston housing 44 is moved up to a certain height again by the water pressure, and the second compression spring 52 has a certain pre-pressure.
Claims (8)
1. A water supply system for preventing a water pipe from frost cracking comprises a water heater, a water outlet pipe, a spray head, a connecting box, a hot water pipe, a cold water pipe, a hot water switch, a water heater inlet switch, a cold water switch, a water inlet pipe and a water outlet switch, wherein one end of the cold water pipe is installed at the water source input end of the water heater, one end of the cold water pipe close to the water heater is provided with the water inlet pipe, and the water inlet pipe is connected with an external water source; one end of the hot water pipe is arranged at the water source output end of the water heater; the other ends of the cold water pipe and the hot water pipe are respectively communicated with a connecting box arranged in the bath room; one end of the water outlet pipe is arranged at the water source output end on the connecting box, and the other end of the water outlet pipe is provided with a spray head; the water outlet pipe is also provided with a water outlet switch for controlling the connection of the water outlet pipe; a water heater inlet switch box cold water switch is also arranged on the cold water pipe; the cold water switch and the water heater inlet switch are respectively positioned at two sides of the water inlet pipe; the water heater inlet switch is positioned between the water inlet pipe and the water source input end of the water heater and controls whether the water heater adds water or not; the cold water switch controls the connection of the cold water pipe; the hot water pipe is also provided with a hot water switch for controlling the connection of the hot water pipe; the method is characterized in that: the hot water pipe and the cold water pipe are also provided with drainage devices, after all people have a bath, the hot water switch, the water heater inlet switch and the cold water switch are turned off, the water outlet switch is turned on, and then the drainage devices are controlled to work to drain residual water in the cold water pipe and the hot water pipe;
the water discharging device is an adjusting mechanism, and the hot water pipe and the cold water pipe are respectively provided with an adjusting mechanism; the mounting position of the adjusting mechanism on the hot water pipe is positioned between the hot water switch and the connecting box and close to the hot water switch; the mounting position of the adjusting mechanism on the cold water pipe is positioned between the cold water switch and the connecting box and close to the cold water switch; for the adjusting mechanism arranged on the hot water pipe, the adjusting mechanism comprises a first limiting mechanism, an installation block, a second limiting mechanism, a limiting rod, a limiting connecting rod, a liquid piston and a gas piston, wherein the liquid piston consists of a second piston plate, a second piston shell and a first compression spring; one end of the connecting water pipe is arranged at the output end of the second piston shell, and the other end of the connecting water pipe is connected with the hot water pipe through a three-way valve; one end of the second transmission rod is fixedly arranged at the upper end of the second piston plate, and the other end of the second transmission rod penetrates through the second piston shell and is positioned on the outer side of the second piston shell; the gas piston consists of a first piston plate, a first piston shell and a second compression spring, the first piston plate is arranged in the first piston shell in a sliding fit manner, and the second compression spring is arranged between the upper end surface of the first piston plate and the upper end surface in the first piston shell; one end of the exhaust pipe is arranged at the gas output end of the first piston shell, and the other end of the exhaust pipe is connected with the hot water pipe through a three-way valve; a third one-way valve is arranged on the exhaust pipe; one end of the air inlet pipe is arranged at the air input end of the first piston shell, the other end of the air inlet pipe is communicated with the outside air, and the air inlet pipe is provided with a second one-way valve; one end of the first transmission rod is positioned at the upper end of the first piston plate, and the other end of the first transmission rod penetrates through the first piston shell and is positioned at the outer side of the first piston shell; the first transmission rod is in contact fit with the first piston plate; one end of the first transmission rod, which is positioned outside the first piston shell, is connected with one end of the second transmission rod, which is positioned outside the second piston shell, through a limiting connecting rod; one end of the third transmission rod is fixedly arranged on the first piston plate, and the other end of the third transmission rod penetrates through the first piston shell and is positioned outside the first piston shell; the mounting block is provided with two mounting grooves which are distributed up and down, the inner end surfaces of the two mounting grooves are provided with communicated guide sliding grooves, and the first limiting mechanism and the second limiting mechanism are respectively mounted in the two mounting grooves; the limiting connecting rod moves to the uppermost side and then is limited by the first limiting mechanism, the limiting rod moves to the lowermost side under the pre-pressure of the second spring and then extrudes the limiting block in the second limiting mechanism, the limiting blocks in the first limiting mechanism and the second limiting mechanism are connected through a connecting rod, and the connecting rod is in sliding fit with the guide sliding chute; the limiting blocks in the first limiting mechanism and the second limiting mechanism are kept synchronous in the moving process through the connecting rod; when the hot water switch, the water heater inlet switch and the cold water switch are turned on, and the water outlet switch is turned on, the limiting rod and the limiting connecting rod are positioned between the second limiting mechanism and the first limiting mechanism; when the hot water switch, the water heater inlet switch and the cold water switch are turned on and the water outlet switch is turned off, the limiting connecting rod is limited by the first limiting mechanism.
2. The water supply system for preventing frost crack of a water pipe according to claim 1, wherein: the first limiting mechanism comprises a first limiting block, a first reset spring, a first pull rod and a first limiting shell, wherein the first limiting shell is installed in an installation groove formed in the installation block, a circular hole is formed in one end, located in the installation groove, of the first limiting shell, an inclined surface is formed in one end of the first limiting block, the other end of the first limiting block is installed in the first limiting shell in a sliding fit mode, and the first reset spring is installed between one end, located in the first limiting shell, of the first limiting block and the inner end face of the first limiting shell; one end of the first pull rod is fixedly arranged at one end of the first limiting block, which is positioned in the first limiting shell, and the other end of the first pull rod penetrates through a circular hole formed in the first limiting shell and is positioned outside the first limiting shell; the first limiting block is matched with the limiting connecting rod;
the second limiting mechanism comprises a second limiting block, a second reset spring, a second pull rod and a second limiting shell, wherein the second limiting shell is installed in an installation groove formed in the installation block, one end, located in the installation groove, of the second limiting shell is provided with a circular hole, one end of the second limiting block is provided with an inclined surface, the other end of the second limiting block is installed in the second limiting shell in a sliding fit mode, and the second reset spring is installed between one end, located in the second limiting shell, of the second limiting block and the inner end face of the second limiting shell; one end of a second pull rod is fixedly arranged at one end of a second limiting block positioned in the second limiting shell, and the other end of the second pull rod penetrates through a circular hole formed in the second limiting shell and is positioned outside the second limiting shell; the second limiting block is matched with the limiting rod;
the end of the first pull rod, which is positioned outside the first limit shell, is connected with the end of the second pull rod, which is positioned outside the second limit shell, through a connecting rod.
3. The water supply system for preventing frost crack of a water pipe according to claim 1, wherein: two second sealing rings are uniformly arranged on the outer circular surface of the first piston plate up and down; two first sealing rings are uniformly arranged on the outer circular surface of the second piston plate from top to bottom.
4. The water supply system for preventing frost crack of a water pipe according to claim 2, wherein: two guide grooves are symmetrically formed in two side faces in the first limiting shell and the second limiting shell, two first guide blocks are symmetrically arranged on two sides of the first limiting block, and the first limiting block is arranged in the first limiting shell through the sliding fit of the two first guide blocks and the two guide grooves formed in the first limiting shell; two second guide blocks are symmetrically arranged on two sides of the second limiting block, and the second limiting block is arranged in the second limiting shell through the sliding fit of the two second guide blocks and the two guide grooves formed in the second limiting shell.
5. The water supply system for preventing frost crack of a water pipe according to claim 2, wherein: the first return spring and the second return spring are compression springs.
6. The water supply system for preventing frost crack of a water pipe according to claim 2, wherein: the second compression spring has pre-pressure, and under the pre-pressure, when the hot water switch, the water heater inlet switch and the cold water switch are turned on, and the water outlet switch is turned on, the limiting rod and the limiting connecting rod are positioned between the second limiting mechanism and the first limiting mechanism.
7. The water supply system for preventing frost crack of a water pipe according to claim 2, wherein: the limiting connecting rod is fixedly arranged on the first transmission rod and the second transmission rod in a welding mode.
8. The water supply system for preventing frost crack of a water pipe according to claim 2, wherein: the inclination angle of the inclined plane of the first limiting block is 45 degrees, and the inclination angle of the inclined plane of the second limiting block is 45 degrees.
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| GB2599959A (en) * | 2020-10-19 | 2022-04-20 | Kohler Mira Ltd | Control system for one or more ablutionary devices |
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| US4096877A (en) * | 1976-05-17 | 1978-06-27 | Arledge Ii E R | Freezeproof sanitary water supply appliance |
| CN201935410U (en) * | 2010-12-28 | 2011-08-17 | 广州德能热源设备有限公司 | Hot water installation system capable of discharging water to prevent freezing after power failure |
| CN202706102U (en) * | 2012-07-23 | 2013-01-30 | 黄诗锋 | Anti-freezing water pipe |
| KR101517040B1 (en) * | 2013-07-03 | 2015-05-04 | 주식회사 남도 | Water-supply apparatus with valve for protecting from frozen breaking |
| CN103498494B (en) * | 2013-09-26 | 2015-05-06 | 宁波南车时代传感技术有限公司 | Anti-freezing sewage collection system and anti-freezing method of same |
| CN106500342B (en) * | 2016-10-13 | 2019-07-16 | 广东万家乐燃气具有限公司 | A kind of hot water circuit control system with immediate thermal function |
| CN106759634A (en) * | 2016-10-19 | 2017-05-31 | 滁州市大工机电有限公司 | A kind of outdoor non-negative pressure water-supply installation with antifreeze function |
| CN209243820U (en) * | 2018-10-19 | 2019-08-13 | 吴思辰 | A kind of intelligence Nti-freezing device for water pipe |
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