CN116123339A - Electromagnetic valve capable of slowly flowing and preventing water hammer phenomenon - Google Patents
Electromagnetic valve capable of slowly flowing and preventing water hammer phenomenon Download PDFInfo
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- CN116123339A CN116123339A CN202310277054.1A CN202310277054A CN116123339A CN 116123339 A CN116123339 A CN 116123339A CN 202310277054 A CN202310277054 A CN 202310277054A CN 116123339 A CN116123339 A CN 116123339A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 21
- 230000000630 rising effect Effects 0.000 abstract description 4
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 32
- 239000012530 fluid Substances 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
- F16K47/011—Damping of valve members by means of a dashpot
- F16K47/0111—Damping of valve members by means of a dashpot the valve members comprising a plunger sliding within a fixed dashpot
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
- F16K47/012—Damping of valve members by means of a resilient damping element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to the technical field of electromagnetic valves and discloses an electromagnetic valve capable of slowly preventing water hammer, wherein when the electromagnetic valve is closed, water flow in a pipeline causes rapid rising of water pressure at the front part of the electromagnetic valve under the inertia effect through arrangement of a first water hammer buffer pipe and a back pressure chamber, at the moment, the water pressure can push a first buffer piston in the first water hammer buffer pipe to move, air in the first piston pipe and the back pressure chamber is compressed, so that the rising speed of the water pressure in the pipeline is delayed, instant impact caused by the water hammer effect can be reduced, the damage to the pipeline and the electromagnetic valve is avoided, meanwhile, the pressure in the back pressure chamber can be rapidly increased until the pressure is equal to or close to the pressure in the electromagnetic valve, and thus, the pressure difference between the inside and outside of a sealing box can be greatly reduced, and the risk of leakage of the sealing box under high pressure is reduced.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve capable of slowly flowing to prevent water hammer.
Background
The water hammer is called a water hammer because the water flow is generated by pressure water flow when the power is suddenly cut off or when the valve is closed too fast, and the water hammer is just like a hammer to strike. The force generated by the water flow shock wave back and forth is sometimes large, so that the valve and the water pump are damaged, the flow in the pipeline is reduced from the rated flow to zero at the moment of closing the valve, the fluid has compressibility to a certain extent, so that the abrupt change of the flow can cause the impact of the excessive high pressure or the excessive low pressure in the pipeline, and the cavitation phenomenon occurs, the impact of the pressure can cause the pipe wall to be stressed to generate as if a hammer strikes the pipe, namely the water hammer effect, and the electromagnetic valve is damaged.
Traditional solenoid valve, like chinese patent CN218236226U a diaphragm formula prevents back pressure waterproof hammer solenoid valve, adopt diaphragm structure to draw a water hammer effect, can only reduce the influence that the water hammer brought to a limited extent, close in the twinkling of an eye can cause solenoid valve front portion pipeline pressure to increase suddenly under the effect of water hammer phenomenon at the during operation, and solenoid valve rear portion pipeline pressure suddenly drops, thereby cause the valve internal and external pressure to reach the biggest in the twinkling of an eye, the sealing mechanism of solenoid valve extremely easily appears revealing this moment, and solenoid valve and pipeline lack buffering, lead to the damage easily under the impact in the twinkling of an eye, simultaneously because the S-shaped structure that traditional solenoid valve management rice adopted, lead to the inside prediction jam of valve body easily.
Disclosure of Invention
The invention aims to provide a solenoid valve capable of slowly preventing water hammer, so as to solve the problems that the conventional solenoid valve is difficult to efficiently inhibit the water hammer effect and is easy to leak when the water hammer effect occurs.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a but slowly flow prevention water hammer's solenoid valve, includes solenoid valve body, the solenoid valve body front end is provided with the water inlet end flange, the solenoid valve body rear end is provided with out water end flange, solenoid valve body upper portion is through bolt fixedly connected with buckler, buckler one side is provided with the terminal box, be provided with the electro-magnet in the buckler, be provided with movable iron core in the middle of the electro-magnet, the movable iron core top is provided with iron core buffer spring, movable iron core passes through screw thread fixedly connected with valve rod, the valve rod lower extreme passes through screw thread fixedly connected with seal piston, seal piston below is provided with the intercommunication mouth, the movable iron core below is provided with the seal letter, the seal letter intussuseption is filled with sealing filler, seal letter upper portion is provided with back pressure room, water end flange inboard is connected to the back pressure room through first water hammer buffer tube, water end flange inboard is connected with the second water hammer buffer tube, be provided with slow flow cleaning mechanism in the solenoid valve body.
Further, the first water hammer buffer tube includes the connecting pipe, solenoid valve body is close to water inlet flange one side and is connected with first piston tube through the connecting pipe, be provided with first buffering piston in the first piston tube, be provided with the sealing washer between first buffering piston and the first piston tube inner wall and seal, first buffering piston one side is provided with first reset spring in the first piston tube.
Further, the first return spring is located at the first buffer piston, and the first buffer piston is located at the right end of the first piston tube.
Further, the length of the first water hammer buffer tube is greater than the distance moved by the first buffer piston when balancing the pressure generated by the water hammer phenomenon.
Further, the lower part of the back pressure chamber is sealed with the sealing box through covering, the upper part of the back pressure chamber is connected with the waterproof cover through the sealing ring in a sealing way, and the other side of the back pressure chamber is provided with a one-way air valve and an air pressure gauge.
Further, a threaded pin is arranged in the one-way air valve, a movable steel ball is arranged in an air passage of the one-way air valve, an air outlet of the one-way air valve is vertically downward, an air outlet of the one-way air valve is communicated with an air pressure gauge, and the diameter of the middle section of the threaded pin is smaller than that of the air outlet of the one-way air valve.
Further, the second water hammer buffer tube comprises a second piston tube, the inner side of the water outlet end flange is vertically connected with the second piston tube, a second buffer piston is arranged in the second piston tube, the second buffer piston is sealed with the inner wall of the second piston tube through a sealing ring, and a second reset spring is arranged below the second buffer piston.
Further, the length of the second piston tube is longer than the moving distance of the second buffer piston when the negative pressure generated by the water hammer is balanced, and the second buffer piston is positioned at the top end of the second piston tube.
Further, the slow flow cleaning mechanism comprises a first limiting ring, the inner wall of the electromagnetic valve body is fixedly connected with a first limiting ring, a choke ring is arranged on the inner side of the first limiting ring, a water hammer buffer spring is arranged on the inner side of the choke ring, a second limiting ring is arranged on the inner side of the water hammer buffer spring, the second limiting ring is fixedly connected with the inner wall of the electromagnetic valve body, a spiral spoiler is fixedly connected in the choke ring, the spiral spoiler is in a spiral shape, a water inlet end and a water outlet end of the electromagnetic valve body are both provided with a group of slow flow cleaning mechanisms, and the spiral directions of the spiral spoilers in the two groups of slow flow cleaning mechanisms are consistent.
Further, the pressure release overflow mechanism comprises an overflow path, the front end of the overflow path is positioned at the choke ring, the rear end of the overflow path is positioned at the rear part of the electromagnetic valve body, the outer side of the overflow path is fixedly connected with a replaceable pressure valve through a screw, the replaceable pressure valve is fixedly connected with a cross fixing frame, the center of the cross fixing frame is penetrated with a pushing rod, the front end of the pushing rod is fixedly provided with a choke valve plate, a constant pressure spring is arranged between the choke valve plate and the cross fixing frame, the constant pressure spring is in a pressed state, the pressure of the constant pressure spring is larger than the normal pressure in a pipeline, and is smaller than the instant pressure in the electromagnetic valve body when the water hammer phenomenon occurs.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the electromagnetic valve capable of slowly flowing and preventing the water hammer phenomenon, through the arrangement of the first water hammer buffer tube and the back pressure chamber, when the electromagnetic valve is closed, water flow in the pipeline causes rapid rising of water pressure at the front part of the electromagnetic valve under the inertia effect, at the moment, the water pressure can push the first buffer piston in the first water hammer buffer tube to move, air in the first piston tube and the back pressure chamber is compressed, so that rising speed of the water pressure in the pipeline is delayed, instant impact caused by the water hammer effect can be reduced, damage to the pipeline and the electromagnetic valve is avoided, meanwhile, the pressure in the back pressure chamber can be quickly raised until the pressure is equal to or close to the pressure in the electromagnetic valve, and thus, the pressure difference between the inside and outside of the sealing box can be greatly reduced, and the risk of leakage of the sealing box under high pressure is reduced;
2. according to the electromagnetic valve capable of slowly flowing and preventing the water hammer phenomenon, through the arrangement of the slowly flowing cleaning mechanism, when water flows through the slowly flowing cleaning mechanism, the flow speed can be reduced under the blocking of the spiral flow blocking plate, so that the inertia of the water flow in a pipeline can be reduced, the pressure caused by the water hammer effect is reduced, meanwhile, the water flow can generate rotary vortex when passing through the spiral flow blocking plate, so that the impact force on the inner wall of the electromagnetic valve can be enhanced, and the blocking caused by impurity siltation in the electromagnetic valve can be prevented.
Drawings
FIG. 1 is a schematic view of the appearance structure of the present invention;
FIG. 2 is a schematic cross-sectional view of an electromagnetic valve body of the present invention;
FIG. 3 is a schematic diagram of an electromagnet structure according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 2B according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 2 at C in accordance with the present invention;
FIG. 7 is a schematic cross-sectional view of a slow flow cleaning mechanism according to the present invention;
FIG. 8 is an enlarged schematic view of the structure of FIG. 7D according to the present invention;
FIG. 9 is a schematic diagram of a pressure relief overflow mechanism according to the present invention;
FIG. 10 is a schematic diagram of an opening structure of a pressure relief overflow mechanism according to the present invention;
FIG. 11 is an enlarged schematic view of the structure of FIG. 10 according to the present invention;
FIG. 12 is a schematic cross-sectional view of a solenoid valve body according to the present invention.
Reference numerals in the drawings: 1. an electromagnetic valve body; 2. a water inlet end flange; 3. a water outlet end flange; 4. a waterproof cover; 5. a junction box; 6. an electromagnet; 7. a movable iron core; 8. an iron core buffer spring; 9. a valve stem; 10. a sealing piston; 11. a communication port; 12. a spring catch; 13. a pressure spring; 14. a sealing box; 15. sealing filler; 16. a first water hammer buffer tube; 1601. a connecting pipe; 1602. a first piston tube; 1603. a first buffer piston; 1604. a first return spring; 17. a back pressure chamber; 18. a one-way air valve; 1801. a threaded pin; 1802. a movable steel ball; 19. an air pressure gauge; 20. a second water hammer buffer tube; 2001. a second piston tube; 2002. a second buffer piston; 2003. a second return spring; 21. a slow flow cleaning mechanism; 2101. a first stop collar; 2102. a choke ring; 2103. a spiral spoiler; 2104. a water hammer buffer spring; 2105. a second limiting ring; 22. a pressure relief overflow mechanism; 2201. an overflow; 2202. a replaceable pressure valve; 2203. a cross fixing frame; 2204. a push rod; 2205. a choke valve plate; 2206. and a constant pressure spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings.
Referring to fig. 1-3, the electromagnetic valve comprises an electromagnetic valve body 1, a water inlet end flange 2 is arranged at the front end of the electromagnetic valve body 1, a water outlet end flange 3 is arranged at the rear end of the electromagnetic valve body 1, a waterproof cover 4 is fixedly connected to the upper portion of the electromagnetic valve body 1 through bolts, a junction box 5 is arranged on one side of the waterproof cover 4, an electromagnet 6 is arranged in the waterproof cover 4, a movable iron core 7 is arranged in the middle of the electromagnet 6, an iron core buffer spring 8 is arranged above the movable iron core 7, a valve rod 9 is fixedly connected to the movable iron core 7 through threads, a sealing piston 10 is fixedly connected to the lower end of the valve rod 9 through threads, a communication port 11 is arranged below the sealing piston 10, a sealing function 14 is arranged below the movable iron core 7, sealing packing 15 is filled in the sealing function 14, a back pressure chamber 17 is arranged on the upper portion of the sealing function 14, the inner side of the water inlet end flange 2 is connected to the back pressure chamber 17 through a first water hammer buffer tube 16, a second water hammer buffer tube 20 is connected to the inner side of the water outlet end flange 3, and a slow flow cleaning mechanism 21 is arranged in the electromagnetic valve body 1.
Referring to fig. 1-4, the first water hammer buffer tube 16 includes a connecting tube 1601, a first piston tube 1602 is connected to a side of the electromagnetic valve body 1 near the water inlet end flange 2 through the connecting tube 1601, a first buffer piston 1603 is disposed in the first piston tube 1602, a sealing ring is disposed between the first buffer piston 1603 and an inner wall of the first piston tube 1602 to seal, a first return spring 1604 is disposed on a side of the first buffer piston 1603 in the first piston tube 1602, a length of the first water hammer buffer tube 16 is greater than a distance moved by the first buffer piston 1603 when a pressure generated by a water hammer phenomenon is balanced, the first return spring 1604 is disposed at a right end of the first buffer piston 1603, so that when the electromagnetic valve is suddenly closed, a pressure in front of the electromagnetic valve rises to push the first buffer piston 1603 in the first piston tube 1602 and compress air in the first piston tube 1602 and the back pressure chamber 17, when the pressure in the back pressure chamber 17 and the pressure in the front pipeline of the electromagnetic valve reach balance, the first buffer piston 1603 stops moving, so that the pressure in the front pipeline of the electromagnetic valve does not rise instantly, but has a certain buffer space, the impact force caused by the water hammer phenomenon can be greatly reduced, the electromagnetic valve is prevented from being damaged, meanwhile, after the water hammer phenomenon disappears, the first buffer piston 1603 returns to the right end of the first piston pipe 1602 due to the action of the first return spring 1604 to wait for the next water hammer phenomenon, and meanwhile, when the water hammer phenomenon occurs, the pressure in the front pipeline of the electromagnetic valve increases suddenly, the pressure in the back pressure chamber 17 always keeps balance with the pressure in the pipeline, so that the inside and outside of the sealing function 14 cannot generate larger pressure difference, and leakage is not easy to occur.
Referring to fig. 1, 2 and 5, the lower part of the back pressure chamber 17 is sealed and isolated from the sealing box 14 by covering the seal, the upper part of the back pressure chamber 17 is connected with the waterproof cover 4 in a sealing way, so that the back pressure chamber 17 is kept sealed, no pressure relief occurs, the other side of the back pressure chamber 17 is provided with a one-way air valve 18 and an air pressure gauge 19, a threaded pin 1801 is arranged in the one-way air valve 18, a movable steel ball 1802 is arranged in an air passage of the one-way air valve 18, an air outlet of the one-way air valve 18 is vertically downward, the air outlet of the one-way air valve 18 is communicated with the air pressure gauge 19, the diameter of the middle section of the threaded pin 1801 is smaller than the air outlet of the one-way air valve 18, the movable steel ball 1802 in the one-way air valve 18 can block the air outlet, no leakage occurs, the air pressure in the back pressure chamber 17 can be reduced when the first buffer piston 1603 returns, the movable steel ball 1802 can be sprung up under the action of the air flow, the air outlet cannot be blocked, and the air pressure in the back pressure chamber 17 can be measured when the water hammer phenomenon occurs, and the air pressure gauge 19 can be observed conveniently.
Referring to fig. 1, 2 and 6, the second water hammer buffer tube 20 includes a second piston tube 2001, the inner side of the water outlet flange 3 is vertically connected with the second piston tube 2001, a second buffer piston 2002 is disposed in the second piston tube 2001, a seal ring is disposed between the second buffer piston 2002 and the inner wall of the second piston tube 2001, a second return spring 2003 is disposed below the second buffer piston 2002, the length of the second piston tube 2001 is longer than the moving distance of the second buffer piston 2002 when balancing the negative pressure generated by the water hammer, the second buffer piston 2002 is located at the top end of the second piston tube 2001, so that the pressure in the pipeline at the rear of the electromagnetic valve is instantaneously reduced when the water hammer occurs, at this time, the second buffer piston 2002 moves downwards due to the pressure drop below the second buffer piston 2002, and stops when the upper and lower pressures of the second buffer piston 2002 are consistent, and also plays a certain role in buffering, so as to prevent the electromagnetic valve and pipeline from being damaged due to receiving excessive impact, and the second buffer piston 2002 pushes the second buffer piston 2003 to return to the lower end of the second buffer piston 2001 after the water hammer phenomenon is finished.
Referring to fig. 7 and 8, the slow flow cleaning mechanism 21 includes a first limit ring 2101, the inner wall of the electromagnetic valve body 1 is fixedly connected with the first limit ring 2101, the inner side of the first limit ring 2101 is provided with a flow blocking ring 2102, the inner side of the flow blocking ring 2102 is provided with a water hammer buffer spring 2104, the inner side of the water hammer buffer spring 2104 is provided with a second limit ring 2105, the second limit ring 2105 is fixedly connected with the inner wall of the electromagnetic valve body 1, the flow blocking ring 2102 is fixedly connected with a spiral flow blocking plate 2103, the spiral flow blocking plate 2103 is in a spiral shape, the water inlet end and the water outlet end of the electromagnetic valve body 1 are respectively provided with a group of slow flow cleaning mechanism 21, and the spiral directions of the spiral flow blocking plates 2103 in the two groups of slow flow cleaning mechanisms are identical, so that when water flows pass through the slow flow cleaning mechanism 21, the flow can reduce the flow velocity under the blocking of the spiral flow blocking plate 2103, thereby reducing the inertia of water flow in a pipeline, and further reducing the pressure brought by a water hammer effect, simultaneously, the water hammer effect can generate rotary vortex when passing through the spiral flow blocking plate 2103, thereby enhancing the impact force of the inner wall of the electromagnetic valve hammer, the electromagnetic valve body, the spiral hammer can be prevented from being blocked by the spiral flow hammer effect, the water hammer effect can be compressed by the electromagnetic valve body 2104, and the pressure hammer effect can be compressed by the first limit ring 2104, and the pressure buffer ring 2104, and the pressure effect can be reduced, and the pressure of the first limit ring 2104, and the pressure effect can be compressed by the electromagnetic valve 4, and the pressure of the spiral ring 2104.
Referring to fig. 9-12, the pressure release overflow mechanism 22 includes an overflow path 2201, the front end of the overflow path 2201 is located at a choke coil 2102, the rear end of the overflow path 2201 is located at the rear of the solenoid valve body 1, the outer side of the overflow path 2201 is fixedly connected with a replaceable pressure valve 2202 through a screw, a cross fixing frame 2203 is fixedly connected in the replaceable pressure valve 2202, a push rod 2204 penetrates through the center of the cross fixing frame 2203, a choke plate 2205 is fixed at the front end of the push rod 2204, a constant pressure spring 2206 is arranged between the choke plate 2205 and the cross fixing frame 2203, the constant pressure spring 2206 is in a compressed state, the pressure of the constant pressure spring 2206 is larger than the normal pressure in a pipeline and smaller than the instant pressure in the solenoid valve body 1 when the water hammer phenomenon occurs, so that the choke coil 2102 at the front of the solenoid valve body 1 contacts with the first limit ring 2101 under the pushing of the water hammer buffer spring 2104 when the solenoid valve is normally opened or closed, at this time, the flow blocking ring 2102 can block the front pipe orifice of the spillway 2201 in the pressure release overflow mechanism 22, meanwhile, when the electromagnetic valve is normally opened or closed, the flow blocking valve plate 2205 can block the spillway 2201 under the pushing of the constant pressure spring 2206, the pressure of the constant pressure spring 2206 is larger than the normal pressure in the pipeline, so that the fluid in the pipeline can not enter the spillway 2201, when the water hammer phenomenon occurs, the flow blocking ring 2102 at the front part of the electromagnetic valve body 1 is pushed by high-pressure water flow, the water hammer buffer spring 2104 is compressed, the front pipe orifice of the inner spillway 2201 can be opened, the pressure in the pipeline is instantly increased and is larger than the pressure of the constant pressure spring 2206, at this time, the flow blocking valve plate 2205 is pushed and the constant pressure spring 2206 is compressed, the overflow channel 2201 is opened, the fluid at the water inlet end of the electromagnetic valve body 1 can bypass the communication port 11 to enter the rear end of the electromagnetic valve body 1 through the overflow channel 2201, thus pressure release is realized, the influence of the water hammer phenomenon is relieved, when the instant pressure is released, the constant pressure spring 2206 pushes the flow blocking valve plate 2205 to close the overflow channel 2201, meanwhile, the flow blocking ring 2102 is also reset under the pushing of the water hammer buffer spring 2104 to block the front pipe orifice of the overflow channel 2201, and fluid is prevented from entering the overflow channel 2201.
Working principle: when the electromagnetic valve capable of slowly flowing to prevent the water hammer phenomenon is used, firstly, the electromagnet 6 can be used for driving the movable iron core 7 to move downwards when the electromagnetic valve works, when the movable iron core 7 moves downwards, the sealing piston 10 can be pushed upwards to block the communication port 11, so that the electromagnetic valve is closed, when the electromagnet 6 is powered off, the pressure spring 13 can push the valve rod 9 upwards through the spring baffle 12, so that the communication port 11 is opened, the sealing performance of the sealing filler 15 in the sealing box 14 can be enhanced, and leakage is prevented;
when water flows through the slow flow cleaning mechanism 21, the flow speed can be reduced under the blocking of the spiral flow blocking plate 2103, so that the inertia of the water flow in a pipeline can be reduced, the pressure caused by the water hammer effect is reduced, meanwhile, the water flow can generate rotary vortex when passing through the spiral flow blocking plate 2103, so that the impact force on the inner wall of the electromagnetic valve can be enhanced, the impurities can be prevented from being deposited in the electromagnetic valve to cause blocking, and meanwhile, when the electromagnetic valve is suddenly closed, the pressure caused by the water hammer phenomenon can also act on the spiral flow blocking plate 2103, so that the spiral flow blocking plate 2103 and the flow blocking ring 2102 can be pushed to compress the water hammer buffer spring 2104, the impact force caused by the water hammer effect can be absorbed when the water hammer buffer spring 2104 is compressed and converted into the elastic potential energy of the water hammer buffer spring 2104, the destructive force of the water hammer effect is reduced, and the positions of the flow blocking ring 2102 and the water hammer buffer spring 2104 can be limited by the first limiting ring 2101 and the second limiting ring 2105;
when the electromagnetic valve is in a normal opening or closing state, a flow blocking ring 2102 at the front part of the electromagnetic valve body 1 is contacted with a first limit ring 2101 under the pushing of a water hammer buffer spring 2104, at the moment, the flow blocking ring 2102 can block the front pipe orifice of a spillway 2201 in a pressure relief overflow mechanism 22, meanwhile, when the electromagnetic valve is in a normal opening or closing state, a flow blocking valve plate 2205 can block the spillway 2201 under the pushing of the pressure fixing spring 2206, the pressure of the pressure fixing spring 2206 is higher than the normal pressure in a pipeline, so that fluid in the pipeline can not enter the spillway 2201, when a water hammer phenomenon occurs, the flow blocking ring 2102 at the front part of the electromagnetic valve body 1 is pushed by high-pressure water flow, the water hammer buffer spring 2104 is compressed, the front pipe orifice of the inner spillway 2201 can be opened, at the moment, the pressure in the pipeline can be instantly increased and higher than the pressure of the pressure fixing spring 2206, at the moment, the flow blocking valve plate 2205 is pushed and the pressure fixing spring 2206 is compressed, the pressure fixing valve plate 2206 is opened, the fluid at the water inlet end of the electromagnetic valve body 1 can be blocked by the spillway 2201 by the pushing of the spillway 2201 around the connecting port 11, the pressure fixing valve plate is also pushed by the pressure fixing spring 2201, the pressure is released, the pressure of the spillway 2201 is prevented from being released, and the pressure is released at the end of the spillway 2201, and the pressure is released;
when the electromagnetic valve is suddenly closed and a water hammer phenomenon occurs, the pressure at the front part of the electromagnetic valve rises to push the first buffer piston 1603 in the first piston pipe 1602 and compress the air in the first piston pipe 1602 and the back pressure chamber 17, and when the pressure in the back pressure chamber 17 and the pressure in the pipeline at the front part of the electromagnetic valve reach balance, the first buffer piston 1603 stops moving, so that the pressure in the pipeline at the front part of the electromagnetic valve does not rise instantly, but has a certain buffer space, the impact force caused by the water hammer phenomenon can be greatly reduced, the electromagnetic valve is prevented from being damaged, meanwhile, after the water hammer phenomenon disappears, the first buffer piston 1603 returns to the right end of the first piston pipe 1602 due to the action of the first return spring 1604 and waits for the next water hammer phenomenon, and meanwhile, when the water hammer phenomenon occurs, the pressure in the pipeline at the front part of the electromagnetic valve is suddenly increased, the pressure in the back pressure chamber 17 is always balanced with the pressure in the pipeline, and the inside and outside the sealing box 14 does not generate larger pressure difference, so that leakage is not easy to occur;
the pressure in the pipeline at the rear part of the electromagnetic valve can be instantaneously reduced when the water hammer phenomenon occurs, at the moment, the pressure below the second buffer piston 2002 suddenly drops, so that the second buffer piston 2002 can move downwards, the upper end of the second piston pipe 2001 is sealed, the second buffer piston 2002 stops when the upper pressure and the lower pressure of the second buffer piston 2002 are consistent, a certain buffer effect is also achieved, the electromagnetic valve and the pipeline are prevented from being damaged due to the fact that the electromagnetic valve and the pipeline receive excessive instantaneous impact, and after the water hammer phenomenon is finished, the second buffer piston 2002 can return to the upper end of the second piston pipe 2001 under the pushing of the second return spring 2003, so that the electromagnetic valve capable of slowly preventing the water hammer phenomenon is completed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a but slow flow prevents solenoid valve of water hammer phenomenon, includes solenoid valve body (1), its characterized in that: the utility model discloses a solenoid valve body, solenoid valve body (1) front end is provided with into water end flange (2), solenoid valve body (1) rear end is provided with out water end flange (3), solenoid valve body (1) upper portion is through bolt fixedly connected with buckler (4), buckler (4) one side is provided with terminal box (5), be provided with electro-magnet (6) in buckler (4), be provided with movable iron core (7) in the middle of electro-magnet (6), movable iron core (7) top is provided with iron core buffer spring (8), movable iron core (7) are through screw thread fixedly connected with valve rod (9), the lower end of the valve rod (9) is fixedly connected with a sealing piston (10) through threads, a communication port (11) is arranged below the sealing piston (10), a sealing box (14) is arranged below the movable iron core (7), sealing filler (15) is filled in the sealing box (14), a back pressure chamber (17) is arranged on the upper portion of the sealing box (14), the inner side of the water inlet end flange (2) is connected to the back pressure chamber (17) through a first water hammer buffer tube (16), a second water hammer buffer tube (20) is connected to the inner side of the water outlet end flange (3), a slow flow cleaning mechanism (21) is arranged in the electromagnetic valve body (1), one side of the electromagnetic valve body (1) is provided with a pressure release overflow mechanism (22).
2. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 1, wherein: the water hammer buffer tube (16) comprises a connecting tube (1601), a first piston tube (1602) is connected to one side, close to a water inlet end flange (2), of the electromagnetic valve body (1) through the connecting tube (1601), a first buffer piston (1603) is arranged in the first piston tube (1602), a sealing ring is arranged between the first buffer piston (1603) and the inner wall of the first piston tube (1602) for sealing, and a first reset spring (1604) is arranged on one side of the first buffer piston (1603) in the first piston tube (1602).
3. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 2, wherein: the first return spring (1604) is located at the first buffer piston (1603), and the first buffer piston (1603) is located at the right end of the first piston tube (1602).
4. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 1, wherein: the length of the first water hammer buffer tube (16) is greater than the distance the first buffer piston (1603) moves when balancing the pressure generated by the water hammer phenomenon.
5. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 1, wherein: the sealing device is characterized in that the lower part of the back pressure chamber (17) is sealed and isolated from the sealing box (14) through covering, the upper part of the back pressure chamber (17) is connected with the waterproof cover (4) through a sealing ring in a sealing mode, and a one-way air valve (18) and an air pressure gauge (19) are arranged on the other side of the back pressure chamber (17).
6. The electromagnetic valve capable of slowly flowing and preventing water hammer according to claim 5, wherein: a threaded pin (1801) is arranged in the one-way air valve (18), a movable steel ball (1802) is arranged in an air passage of the one-way air valve (18), an air outlet of the one-way air valve (18) is vertically downward, an air outlet of the one-way air valve (18) is communicated with an air pressure gauge (19), and the diameter of the middle section of the threaded pin (1801) is smaller than the diameter of the air outlet of the one-way air valve (18).
7. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 1, wherein: the second water hammer buffer tube (20) comprises a second piston tube (2001), the inner side of the water outlet end flange (3) is vertically connected with the second piston tube (2001), a second buffer piston (2002) is arranged in the second piston tube (2001), the second buffer piston (2002) is sealed with the inner wall of the second piston tube (2001) through a sealing ring, and a second reset spring (2003) is arranged below the second buffer piston (2002).
8. The electromagnetic valve capable of slowly flowing and preventing water hammer according to claim 7, wherein: the length of the second piston tube (2001) is longer than the moving distance of the second buffer piston (2002) when the negative pressure generated by the water hammer is balanced, and the second buffer piston (2002) is positioned at the top end of the second piston tube (2001).
9. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 1, wherein: the slow flow cleaning mechanism (21) comprises a first limit ring (2101), the inner wall of the electromagnetic valve body (1) is fixedly connected with the first limit ring (2101), a choke ring (2102) is arranged on the inner side of the first limit ring (2101), a water hammer buffer spring (2104) is arranged on the inner side of the choke ring (2102), a second limit ring (2105) is arranged on the inner side of the water hammer buffer spring (2104), the second limit ring (2105) is fixedly connected to the inner wall of the electromagnetic valve body (1), a spiral choke plate (2101) is fixedly connected to the inner wall of the choke ring (2102), the spiral choke plate (2101) is in a spiral shape, a group of slow flow cleaning mechanism (21) is arranged at the water inlet end and the water outlet end of the electromagnetic valve body (1), and spiral directions of the spiral choke plates (2101) in the two groups of slow flow cleaning mechanisms (21) are consistent.
10. The electromagnetic valve capable of slowly flowing to prevent water hammer phenomenon according to claim 9, wherein: the pressure relief overflow mechanism (22) comprises an overflow channel (2201), the front end of the overflow channel (2201) is located at a choke ring (2102), the rear end of the overflow channel (2201) is located at the rear of the electromagnetic valve body (1), a replaceable pressure valve (2202) is fixedly connected to the outer side of the overflow channel (2201) through a screw, a cross fixing frame (2203) is fixedly connected to the inner side of the replaceable pressure valve (2202), a pushing rod (2204) penetrates through the center of the cross fixing frame (2203), a choke valve plate (2205) is fixed to the front end of the pushing rod (2204), a constant pressure spring (2206) is arranged between the choke valve plate (2205) and the cross fixing frame (2203), the constant pressure spring (2206) is in a pressed state, and the pressure of the constant pressure spring (2206) is larger than the normal pressure in a pipeline and smaller than the instant pressure in the electromagnetic valve body (1) when a water hammer phenomenon occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310277054.1A CN116123339A (en) | 2023-03-21 | 2023-03-21 | Electromagnetic valve capable of slowly flowing and preventing water hammer phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310277054.1A CN116123339A (en) | 2023-03-21 | 2023-03-21 | Electromagnetic valve capable of slowly flowing and preventing water hammer phenomenon |
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| CN116123339A true CN116123339A (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310277054.1A Pending CN116123339A (en) | 2023-03-21 | 2023-03-21 | Electromagnetic valve capable of slowly flowing and preventing water hammer phenomenon |
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| CN (1) | CN116123339A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538369A (en) * | 2023-05-15 | 2023-08-04 | 江苏大学流体机械温岭研究院 | Waterproof hammer safety device with exhaust function |
| CN116697070A (en) * | 2023-08-01 | 2023-09-05 | 河南威盛电气有限公司 | Inflatable composite on-off valve for farmland water conservancy pipeline |
| CN117090992A (en) * | 2023-10-20 | 2023-11-21 | 山东天成阀门制造有限公司 | Pneumatic stop valve |
| CN117796307A (en) * | 2024-02-27 | 2024-04-02 | 东川区耀春种植专业合作社 | Sprinkling irrigation equipment is used in crops planting |
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2023
- 2023-03-21 CN CN202310277054.1A patent/CN116123339A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538369A (en) * | 2023-05-15 | 2023-08-04 | 江苏大学流体机械温岭研究院 | Waterproof hammer safety device with exhaust function |
| CN116697070A (en) * | 2023-08-01 | 2023-09-05 | 河南威盛电气有限公司 | Inflatable composite on-off valve for farmland water conservancy pipeline |
| CN116697070B (en) * | 2023-08-01 | 2023-10-13 | 河南威盛电气有限公司 | Inflatable composite on-off valve for farmland water conservancy pipeline |
| CN117090992A (en) * | 2023-10-20 | 2023-11-21 | 山东天成阀门制造有限公司 | Pneumatic stop valve |
| CN117090992B (en) * | 2023-10-20 | 2024-01-16 | 山东天成阀门制造有限公司 | Pneumatic stop valve |
| CN117796307A (en) * | 2024-02-27 | 2024-04-02 | 东川区耀春种植专业合作社 | Sprinkling irrigation equipment is used in crops planting |
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