CN216447466U - Anti-blocking pilot-operated electromagnetic valve and anti-blocking device thereof - Google Patents
Anti-blocking pilot-operated electromagnetic valve and anti-blocking device thereof Download PDFInfo
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- CN216447466U CN216447466U CN202122675463.6U CN202122675463U CN216447466U CN 216447466 U CN216447466 U CN 216447466U CN 202122675463 U CN202122675463 U CN 202122675463U CN 216447466 U CN216447466 U CN 216447466U
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- solenoid valve
- spring
- clogging
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Abstract
The utility model discloses an anti-blocking pilot-operated solenoid valve and an anti-blocking device thereof, wherein an anti-blocking pilot-operated solenoid valve body, a valve core assembly and a diaphragm assembly are arranged in the valve body; the diameter of the anti-blocking needle is smaller than that of the bypass hole; and the spring is arranged between the diaphragm plate and the valve cover of the pilot type electromagnetic valve, and the upper end of the spring is connected with the anti-blocking needle. According to the utility model, the spring arranged between the diaphragm plate and the valve cover drives the anti-blocking needle to move up and down along the bypass hole along with the on-off of current, so that solid matters accumulated in the bypass hole are cleaned, and the service life of the pilot-operated electromagnetic valve is prolonged.
Description
Technical Field
The utility model relates to the field of electromagnetic valves, in particular to an anti-blocking pilot-operated electromagnetic valve and an anti-blocking device thereof.
Background
The electromagnetic valve is an industrial device which can be used for automatically controlling fluid through electromagnetic control, and is divided into a direct-acting electromagnetic valve, a step-by-step direct-acting electromagnetic valve and a pilot-operated electromagnetic valve in principle, wherein the pilot-operated electromagnetic valve has the advantages of high upper limit of a fluid pressure range, rapid action, small volume and power consumption, energy conservation and the like, and is widely applied to household appliances such as washing machines, solar energy, water purifiers, intelligent toilet covers and the like as an execution part.
The principle of the pilot valve is that when the pilot valve is electrified, the pilot hole is opened by electromagnetic force, the pressure in the upper chamber is rapidly reduced, the pressure difference of low and high pressure is formed around the closing piece, the closing piece is pushed by fluid pressure to move upwards, and the valve is opened; when the power is cut off, the spring force closes the pilot hole, the inlet pressure forms a low-low high pressure difference around the valve closing member through the bypass hole rapid chamber, and the fluid pressure pushes the closing member to move downwards to close the valve.
As calcium and magnesium ions and microorganisms exist in tap water, solid matters are easily accumulated on the bypass hole along with the prolonging of the service time of the pilot-operated electromagnetic valve, so that the bypass hole is blocked, the pressure difference between the upper part and the lower part of the closing member is still high and low when the power is off, the closing member cannot be completely closed, and the water leakage condition is caused.
In view of the above, there is a need for an anti-blocking pilot operated solenoid valve and an anti-blocking device thereof, so as to solve the problem that the normal use of a user is affected due to the fact that the solenoid valve cannot be closed due to the blockage of the bypass hole of the pilot operated solenoid valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the bypass hole of the traditional pilot-operated electromagnetic valve is easy to block and influences the normal use of a user.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
an anti-clogging device of an anti-clogging pilot-operated solenoid valve, comprising:
the anti-blocking needle is arranged in a bypass hole of the pilot type electromagnetic valve and is movably arranged up and down along the bypass hole; the diameter of the anti-blocking needle is smaller than that of the bypass hole;
and the spring is arranged between the diaphragm plate and the valve cover of the pilot type electromagnetic valve, and the upper end of the spring is connected with the anti-blocking needle.
In the above scheme, preferably, the upper end of the spring is provided with a connecting arm extending outwards, and the connecting arm is connected with the upper end of the anti-blocking needle.
The utility model provides an anti-blocking pilot-operated solenoid valve, includes the valve body and sets up case subassembly and diaphragm assembly in the valve body still includes:
in the anti-blocking device, the anti-blocking device is mounted on the diaphragm plate of the diaphragm assembly and arranged between the diaphragm plate and the valve core assembly.
In the above aspect, preferably, the valve body includes:
the water inlet cavity is communicated with the water outlet cavity through a valve plug hole;
the support is fixed on the valve seat through a cover plate, and an electromagnetic coil is arranged on the support.
In the above aspect, preferably, the spool assembly includes:
the valve rod is arranged in the bracket and comprises a guide rod part and an end cover part, the guide rod part is hollow, and the end cover part is arranged at the lower end of the guide rod part;
the iron core is arranged in the guide rod part and moves up and down along the guide rod;
and the compression spring is arranged in the guide rod part, and two ends of the compression spring are respectively abutted against the guide rod part and the iron core.
In the above scheme, preferably, an upper compression spring seat is arranged in the guide rod part, a lower compression spring seat is arranged at the upper end of the iron core, and the compression springs are respectively arranged in the upper compression spring seat and the lower compression spring seat.
In the above aspect, preferably, the diaphragm assembly is disposed in the valve seat, and includes:
the center of the bottom surface of the diaphragm plate is provided with a valve plug matched with the valve plug hole, the valve plug is provided with a pilot hole, the bottom surface of the diaphragm plate is also provided with a bypass hole, and the pilot hole and the bypass hole penetrate through the diaphragm plate;
and the diaphragm is sleeved on the diaphragm plate and is matched with the inner wall of the valve seat.
In the above scheme, preferably, the valve core assembly further includes a piston cap, which is mounted on a piston cap seat at the lower end of the iron core, and is movably disposed above the pilot hole up and down.
In the above aspect, preferably, the diaphragm plate is provided with an annular spring support frame, and an outer diameter of the annular spring support frame is adapted to an inner diameter of the spring.
In the above scheme, preferably, the spring support frame is provided with notches, and the notches are distributed along the radial direction of the spring support frame.
Compared with the prior art, the anti-blocking pilot-operated solenoid valve and the anti-blocking device thereof provided by the utility model have the advantages that the anti-blocking device comprises the anti-blocking needle arranged in the bypass hole and the spring arranged on the top surface of the diaphragm plate of the solenoid valve, the anti-blocking needle is driven by the spring to move up and down in the bypass hole along with the on-off of the solenoid valve, and the solid matters accumulated in the bypass hole are cleaned, so that the problem that the solenoid valve cannot be closed due to the blockage of the bypass hole is effectively solved, the service lives of the solenoid valve and an electrical appliance provided with the solenoid valve are prolonged, and the use experience of a user is improved.
Drawings
FIG. 1 is a schematic diagram showing a disassembled structure of an anti-blocking pilot-operated solenoid valve according to the present invention;
FIG. 2 is a schematic structural diagram of the anti-clogging device of the present invention;
FIG. 3 is a schematic view of the construction of a diaphragm assembly of the present invention;
FIG. 4 is a schematic sectional view of the anti-clogging pilot-operated solenoid valve of the present invention when opened;
FIG. 5 is a schematic sectional view of the anti-clogging pilot-operated solenoid valve of the present invention when it is closed.
The correspondence between the names and reference numbers of the components in fig. 1 to 5 is as follows:
a valve body 1, a valve core component 2, a diaphragm component 3, an anti-blocking device 4,
a valve seat 11, a holder 12, a cover plate 13, a solenoid 14,
a water inlet 111, a water outlet 112, a water inlet cavity 113, a water outlet cavity 114, a valve plug hole 115,
a valve stem 21, a compression spring 22, an iron core 23, a piston cap 24,
a guide rod part 211, an end cover part 212, an upper compression spring mounting seat 213,
a lower compression spring portion 231, a piston cap holder 232,
a second chamber 30, a diaphragm plate 31, a rubber diaphragm 32,
a plug 311, pilot holes 312, bypass holes 313, spring mounts 314, notches 315,
an anti-blocking needle 41, a spring 42 and a connecting arm 43.
Detailed Description
The utility model provides an anti-blocking pilot-operated solenoid valve and an anti-blocking device thereof. The utility model is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1 and 2, the anti-blocking pilot-operated solenoid valve provided by the utility model comprises a valve body 1, a valve core assembly 2, a diaphragm assembly 3 and an anti-blocking device 4 arranged on the diaphragm assembly 3.
The valve body 1 comprises a valve seat 11 and a bracket 12 arranged on the valve seat 11, wherein the valve seat 11 is provided with a water inlet 111 and a water outlet 112, and a water inlet cavity 113 and a water outlet cavity 114 which are respectively communicated with the water inlet 111 and the water outlet 112, and the water inlet cavity 113 and the water outlet cavity 114 are communicated through a valve plug hole 115. The bracket 12 is fixed on the top surface of the valve seat 11 through a cover plate 13, and the electromagnetic coil 14 is arranged on the bracket 12.
The valve core assembly 2 comprises a valve rod 21, a compression spring 22 and an iron core 23, the valve rod 21 is installed on the bracket 12, and the valve plate 21 comprises a hollow guide rod part 211 and an end cover part 212 arranged at the lower end of the guide rod part 211. The compression spring 22 and the iron core 23 are arranged in the guide rod part 211, and two ends of the compression spring 22 respectively abut against the guide rod part 211 and the iron core 23; the iron core 23 moves up and down along the guide part 211.
An upper compression spring mounting seat 213 is arranged at the inner upper end of the guide rod part 211, a lower compression spring part 231 is arranged at the upper end of the iron core 23, and two ends of the compression spring 22 are respectively arranged on the upper compression spring mounting seat 213 and the lower compression spring mounting seat 231.
The valve core assembly 2 further comprises a piston cap 24, a piston cap seat 232 is arranged at the lower end of the iron core 23, and the piston cap 24 is arranged on the piston cap seat 232.
The diaphragm assembly 3 is disposed on the valve seat 11, below the valve core assembly 2, and encloses a second chamber 30 with the valve core assembly 2. The diaphragm component 3 comprises a diaphragm plate 31 and a rubber diaphragm 32, wherein the rubber diaphragm 32 is sleeved on the diaphragm plate 31 and is arranged in sealing contact with the inner side surface of the valve seat 11.
Be equipped with valve plug 311 on the bottom surface of diaphragm plate 31, valve plug 311 sets up on diaphragm plate 31's center, with valve plug hole 115 looks adaptation for carry out shutoff or lead to valve plug hole 115. The valve plug 311 is provided with a pilot hole 312, and the pilot hole 312 is provided through the diaphragm plate 31. The piston cap 24 is above the pilot hole 312 to open or close the pilot hole 312. The diaphragm plate 31 is further provided with a bypass hole 313, and the bypass hole 313 penetrates the top and bottom surfaces of the diaphragm plate 31 to communicate the second chamber 30 with the inlet chamber 113.
The anti-blocking device 4 comprises an anti-blocking needle 41 and a spring 42, the anti-blocking needle 41 is arranged in the bypass hole 313, the diameter of the anti-blocking needle 41 is smaller than that of the bypass hole 313, and water in the water inlet cavity 113 can conveniently enter the second cavity 30 through the bypass hole 313.
The spring 42 is disposed between the diaphragm plate 31 and the end cover portion 212, the upper end of the spring 42 is provided with a connecting arm 43 extending outward, and the upper end of the anti-blocking needle 41 is connected to the upper end of the spring 42 through the connecting arm 43.
The diaphragm plate 31 is further provided with an annular spring mounting seat 314, and the outer diameter of the spring mounting seat 314 is matched with the inner diameter of the spring 42, so that the spring 42 is conveniently and stably arranged on the diaphragm plate 31. The spring mounting seat 314 is further provided with notches 315, and the notches 315 are distributed on the spring mounting seat 314 along the radial direction thereof, so as to improve the flow of water in the second chamber 30 and avoid the deposition of solid matters such as scale on the spring mounting seat 314.
The working process of the utility model is as follows:
when the solenoid 14 is not energized, water in the water inlet cavity 113 will enter the second chamber 40 through the gap between the anti-blocking needle 41 and the bypass hole 313, and a high pressure difference is formed on the diaphragm assembly 3, so that the valve plug 311 on the diaphragm plate 31 is disposed on the valve plug hole 115, and the piston cap 24 is ensured to block the pilot hole 312, so as to separate the water inlet cavity 113 from the water outlet cavity 114, thereby ensuring good sealing performance of the solenoid valve.
When the solenoid coil 14 is energized, the plunger 14 is moved upward by the attraction force and pushes the compression spring 22 to compress. When the piston cap 24 is removed from the guide hole 312, the water inlet cavity 113 is communicated with the water outlet cavity 114, water enters the second cavity 40, a pressure difference of high and low is formed in the diaphragm assembly 3, the diaphragm assembly 3 is pushed to move upwards, the spring 42 is compressed, the lower end of the anti-blocking needle 41 is driven to gradually extend out of the bypass hole 313, the cleaning of the bypass hole 313 is realized, and solid matters cleaned by the anti-blocking needle 41 from the bypass hole 313 can enter the water outlet cavity 114 along with water flow and are discharged from the water outlet 112.
When the electromagnetic coil 14 is powered off, the compression spring 22 is reset, and pushes the iron core to move downwards 14, so that the pilot hole 312 is plugged again, the diaphragm assembly 3 is restored to the high-low pressure distribution, the diaphragm assembly 3 is pushed to reset, and the tightness of the electromagnetic valve is restored.
Compared with the prior art, the anti-blocking pilot-operated solenoid valve and the anti-blocking device thereof provided by the utility model have the advantages that the anti-blocking device comprises the anti-blocking needle arranged in the bypass hole and the spring connected with the anti-blocking needle, and the spring is arranged between the diaphragm assembly and the valve cover, so that the spring drives the anti-blocking needle to move up and down along with the on-off of the electromagnetic coil, the cleaning of the bypass hole is realized, the bypass hole of the pilot-operated solenoid valve is prevented from being blocked and leaking, and the service life of the pilot-operated solenoid valve is prolonged. The anti-blocking device can clean the bypass hole once along with the opening of the electromagnetic valve, so that the blockage of the bypass hole can be effectively avoided. The anti-blocking device has the advantages of simple structure, low production cost and good economic benefit.
According to the anti-blocking device, the spring of the anti-blocking device is arranged on the diaphragm plate through the spring mounting seat, the spring mounting seat is a limiting convex ring matched with the inner diameter of the spring, and the limiting convex ring is provided with the groove, so that the flow of water in the second cavity is improved, and the deposition of solid matters near the spring mounting seat is avoided.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (10)
1. The utility model provides a prevent stifled device of stifled pilot operated solenoid valve which characterized in that includes:
the anti-blocking needle is arranged in a bypass hole of the pilot type electromagnetic valve and is movably arranged up and down along the bypass hole; the diameter of the anti-blocking needle is smaller than that of the bypass hole;
and the spring is arranged between the diaphragm plate and the valve cover of the pilot type electromagnetic valve, and the upper end of the spring is connected with the anti-blocking needle.
2. The anti-clogging device for the anti-clogging pilot operated solenoid valve according to claim 1, wherein the spring has a connecting arm at an upper end thereof, the connecting arm being extended outward, and the connecting arm being connected to an upper end of the anti-clogging needle.
3. The utility model provides an anti-blocking pilot-operated solenoid valve, includes the valve body and sets up case subassembly and diaphragm assembly in the valve body, its characterized in that still includes:
an anti-clogging device for an anti-clogging pilot operated solenoid valve according to any one of claims 1 to 2, said anti-clogging device being mounted on a diaphragm plate of said diaphragm assembly, being disposed between said diaphragm plate and said spool assembly.
4. The anti-clogging pilot operated solenoid valve as recited in claim 3, wherein the valve body comprises:
the valve seat is provided with a water inlet and a water outlet, a water inlet cavity and a water outlet cavity which are communicated with the water inlet and the water outlet are arranged in the valve seat, and the water inlet cavity is communicated with the water outlet cavity through a valve plug hole;
the support is fixed on the valve seat through a cover plate, and an electromagnetic coil is arranged on the support.
5. The anti-clogging pilot operated solenoid valve of claim 4 wherein the spool assembly comprises:
the valve rod is arranged in the bracket and comprises a guide rod part and an end cover part, the guide rod part is hollow, and the end cover part is arranged at the lower end of the guide rod part;
the iron core is arranged in the guide rod part and moves up and down along the guide rod;
and the compression spring is arranged in the guide rod part, and two ends of the compression spring are respectively abutted against the guide rod part and the iron core.
6. The anti-clogging pilot operated solenoid valve according to claim 5, wherein an upper compression spring seat is provided in the rod portion, and a lower compression spring seat is provided at an upper end of the iron core, the compression springs being provided in the upper compression spring seat and the lower compression spring seat, respectively.
7. The anti-clog pilot operated solenoid valve according to claim 5, wherein said diaphragm assembly is disposed within said valve seat, comprising:
the center of the bottom surface of the diaphragm plate is provided with a valve plug matched with the valve plug hole, the valve plug is provided with a pilot hole, the bottom surface of the diaphragm plate is also provided with a bypass hole, and the pilot hole and the bypass hole penetrate through the diaphragm plate;
and the diaphragm is sleeved on the diaphragm plate and is matched with the inner wall of the valve seat.
8. The anti-clogging pilot operated solenoid valve according to claim 7, wherein the spool assembly further comprises a piston cap mounted on a piston cap seat at the lower end of the core and movably disposed up and down above the pilot hole.
9. The pilot operated solenoid valve of claim 7, wherein the diaphragm plate is provided with an annular spring support having an outer diameter adapted to an inner diameter of the spring.
10. The anti-clogging pilot operated solenoid valve according to claim 9, wherein the spring support frame is provided with notches, and the notches are distributed along a radial direction of the spring support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122675463.6U CN216447466U (en) | 2021-11-02 | 2021-11-02 | Anti-blocking pilot-operated electromagnetic valve and anti-blocking device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122675463.6U CN216447466U (en) | 2021-11-02 | 2021-11-02 | Anti-blocking pilot-operated electromagnetic valve and anti-blocking device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216447466U true CN216447466U (en) | 2022-05-06 |
Family
ID=81350903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122675463.6U Active CN216447466U (en) | 2021-11-02 | 2021-11-02 | Anti-blocking pilot-operated electromagnetic valve and anti-blocking device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216447466U (en) |
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2021
- 2021-11-02 CN CN202122675463.6U patent/CN216447466U/en active Active
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