CN217003111U - Electromagnetic valve capable of preventing backflow - Google Patents
Electromagnetic valve capable of preventing backflow Download PDFInfo
- Publication number
- CN217003111U CN217003111U CN202221511412.8U CN202221511412U CN217003111U CN 217003111 U CN217003111 U CN 217003111U CN 202221511412 U CN202221511412 U CN 202221511412U CN 217003111 U CN217003111 U CN 217003111U
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- China
- Prior art keywords
- valve
- cavity
- longitudinal cavity
- valve block
- valve seat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 210000004907 gland Anatomy 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a backflow-preventing electromagnetic valve, wherein a water inlet channel and a water outlet channel are respectively arranged at two ends inside a valve seat, a cavity is arranged at the upper end inside the valve seat, a longitudinal cavity is arranged at the lower end inside the valve seat, the longitudinal cavity penetrates through the lower surface of the valve seat, a first water inlet channel is communicated with the side surface of the longitudinal cavity, the top end of the longitudinal cavity is communicated with the cavity through a connecting channel, the water outlet channel is communicated with the side surface of the cavity, a knob supporting cover is arranged at the bottom end of the valve seat, the upper surface of the valve seat is connected with a valve body, the bottom end of the valve rod is connected with a valve block through a bolt, the valve block is movably arranged in the longitudinal cavity, the structure of the backflow-preventing electromagnetic valve is reasonable, the valve block is positioned below the connecting channel, when the valve is closed, the valve block moves upwards and is closed, the backflow situation can be effectively prevented, the valve block is connected with the valve rod through the bolt, the bottom of the valve seat is provided with the knob cover, the valve block is convenient to install and disassemble, and water can not enter from the lower end of the longitudinal cavity, so that water leakage from the knob cover is prevented.
Description
Technical Field
The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve capable of preventing backflow.
Background
The valve block inside the conventional solenoid valve is generally located in the cavity of the valve seat, and the connecting channel is closed by pressing down, so that the closed circuit of the solenoid valve is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electromagnetic valve for preventing backflow, wherein a valve block is positioned below a connecting channel, when the valve is closed, the valve block moves upwards and is closed, backflow can be effectively prevented, the valve block is connected with a valve rod through a bolt, a knob cover is arranged at the bottom of a valve seat, the valve block is convenient to mount and dismount, and in the structure, water cannot enter the lower end of a longitudinal cavity, so that water leakage cannot occur from the knob cover, and the problems in the background art are solved.
In order to achieve the purpose, the utility model provides the following technical scheme: a backflow-preventing electromagnetic valve comprises a valve seat, a valve body, a coil box and a valve block, wherein a water inlet channel and a water outlet channel are respectively arranged at two ends inside the valve seat, a cavity is arranged at the upper end inside the valve seat, a longitudinal cavity is arranged at the lower end inside the valve seat and penetrates through the lower surface of the valve seat, a first water inlet channel is communicated with the side surface of the longitudinal cavity, the top end of the longitudinal cavity is communicated with the cavity through a connecting channel, the water outlet channel is communicated with the side surface of the cavity, a knob supporting cover is arranged at the bottom end of the valve seat and is in threaded connection with the bottom end of the longitudinal cavity, the upper surface of the valve seat is connected with the valve body, a sliding cavity is arranged inside the valve body, the coil box is arranged outside the valve body, an electromagnetic coil is arranged in the coil box, an iron core is arranged inside the sliding cavity, the bottom end of the iron core is connected with a valve rod, and the bottom end of the valve rod is movably arranged in the longitudinal cavity, one end, far away from the iron core, of the valve rod is connected with the valve block through a bolt, the valve block is movably arranged in the longitudinal cavity, a pushing spring is arranged at the upper end inside the sliding cavity, the bottom end of the pushing spring is supported at the top end of the iron core, the valve body is located at the top of the sliding cavity and is provided with a gland, the top end of the pushing spring is pressed on the lower surface of the gland, and the gland is also pressed on the upper surface of the coil box;
an annular groove is formed in the top of the longitudinal cavity, an annular protrusion is arranged at the top end of the valve block, and the annular protrusion is matched with the annular groove;
a groove is formed in the valve block and penetrates through the lower surface of the valve block;
the upper surface of the iron core is provided with a square hole.
Preferably, the electromagnetic valve for preventing backflow provided by the utility model, wherein an inner wall of the bottom end of the longitudinal cavity is provided with an internal thread, the knob support cover is provided with an external thread connecting cylinder, the external thread connecting cylinder is matched with the internal thread of the bottom end of the longitudinal cavity, and the bottom end of the valve block is supported on the external thread connecting cylinder to realize the limiting of the valve block.
Preferably, in the electromagnetic valve for preventing backflow provided by the utility model, the outer wall of the valve block is attached to and slidably connected with the inner wall of the longitudinal cavity to ensure that no water leakage occurs at the joint of the valve block and the longitudinal cavity, and the outer diameter of the iron core is consistent with the inner diameter of the sliding cavity to ensure the stability of the iron core.
Preferably, the distance from the top end of the longitudinal cavity to the bottom of the water inlet channel is smaller than the height of the valve block, so that the water inlet channel can be blocked by the side wall when the valve block is positioned at the top of the longitudinal cavity.
Preferably, the present invention provides a backflow prevention solenoid valve, wherein the inner diameter of the longitudinal cavity is larger than the inner diameter of the connection passage, so that the valve block cannot be separated from the longitudinal cavity, and the connection passage can be sealed.
Preferably, the utility model provides the electromagnetic valve for preventing backflow, wherein the bottom end of the valve rod is provided with a screw hole, the valve block is provided with a counter bore, and the counter bore of the valve block corresponds to the screw hole at the bottom end of the valve rod and is connected with the screw hole through a bolt, so that the valve block is connected with the valve rod.
Preferably, the solenoid valve for preventing backflow provided by the present invention, wherein the knob support cover is provided with an air hole to exhaust air when the valve block is pressed down.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the valve block is positioned below the connecting channel, and when the valve is closed, the valve block moves upwards and is closed, so that the backflow condition can be effectively prevented.
(2) The valve block passes through the bolt with the valve rod and links to each other, and the disk seat bottom is provided with the knob lid, the installation and the dismantlement of the valve block of being convenient for to this structure, the lower extreme in vertical chamber can not intake, thereby can not take place the condition of leaking from the knob lid.
(3) The valve block upper surface is provided with annular protrusion to with the ring channel cooperation on vertical chamber top, improve the leakproofness of valve block greatly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing an internal structure (passage state) of a valve seat;
fig. 3 is a schematic view of the internal structure (closed state) of the valve seat.
In the figure: the water-saving valve comprises a valve seat 1, a valve body 2, a coil box 3, a water inlet channel 4, a water outlet channel 5, a cavity 6, a longitudinal cavity 7, a connecting channel 8, a knob supporting cover 9, a sliding cavity 10, an electromagnetic coil 11, an iron core 12, a valve rod 13, a valve block 14, a pushing spring 15, a pressing cover 16, an annular protrusion 17, an annular groove 18, a groove 19, a square hole 20 and an external thread connecting cylinder 21.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention;
it should be noted that, in the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a solenoid valve for preventing backflow comprises a valve seat 1, a valve body 2, a coil box 3 and a valve block 14, wherein a water inlet channel 4 and a water outlet channel 5 are respectively arranged at two ends inside the valve seat 1, a cavity 6 is arranged at the upper end inside the valve seat 1, a longitudinal cavity 7 is arranged at the lower end inside the valve seat 1, the longitudinal cavity 7 penetrates through the lower surface of the valve seat 1, a first water inlet channel 4 is communicated with the side surface of the longitudinal cavity 7, the top end of the longitudinal cavity 7 is communicated with the cavity 6 through a connecting channel 8, the water outlet channel 5 is communicated with the side surface of the cavity 6, a knob supporting cover 9 is arranged at the bottom end of the valve seat 1, the knob supporting cover 9 is in threaded connection with the bottom end of the longitudinal cavity 7, an internal thread is arranged on the inner wall at the bottom end of the longitudinal cavity 7, an external thread connecting cylinder 21 is arranged on the knob supporting cover 9, the external thread connecting cylinder 21 is matched with the internal thread at the bottom end of the longitudinal cavity 7, the bottom end of the valve block 14 is supported on the external thread connecting cylinder 21, the upper surface of the valve seat 1 is connected with the valve body 2, a sliding cavity 10 is arranged inside the valve body 2, a coil box 3 is arranged outside the valve body 2, an electromagnetic coil 11 is arranged in the coil box 3, an iron core 12 is arranged inside the sliding cavity 10, the bottom end of the iron core 12 is connected with a valve rod 13, the bottom end of the valve rod 13 is movably arranged in the longitudinal cavity 7, one end of the valve rod 13 far away from the iron core 12 is connected with a valve block 14 through a bolt, the valve block 14 is movably arranged in the longitudinal cavity 7, the bottom end of the valve rod 13 is provided with a screw hole, the valve block 14 is provided with a counter bore, the counter bore of the valve block 14 corresponds to the screw hole at the bottom end of the valve rod 13 and is connected with the screw hole through a bolt, the outer wall of the valve block 14 is attached to and slidably connected with the inner wall of the longitudinal cavity 7, the outer diameter of the iron core 12 is consistent with the inner diameter of the sliding cavity 10, a pushing spring 15 is arranged at the upper end inside the sliding cavity 10, the bottom end of the pushing spring 15 is supported on the top end of the iron core 12, a gland 16 is arranged at the top of the valve body 2, the top of the sliding cavity 10, and the pushing spring 15 is pressed on the lower surface of the gland 16, the gland 16 is also pressed on the upper surface of the coil box 3, the distance from the top end of the longitudinal cavity 7 to the bottom of the water inlet channel 4 is less than the height of the valve block 14, and the inner diameter of the longitudinal cavity 7 is greater than that of the connecting channel 8; an annular groove 18 is formed in the top of the longitudinal cavity 7, an annular protrusion 17 is arranged at the top end of the valve block 14, and the annular protrusion 17 is matched with the annular groove 18; a groove 19 is formed in the valve block 14, and the groove 19 penetrates through the lower surface of the valve block 14; the upper surface of the iron core 12 is provided with a square hole 20, and the knob supporting cover 9 is provided with an air hole.
The assembly method and the use principle are as follows: insert iron core 12 in the sliding chamber 10 of valve body 2, pass cavity 6 and connecting channel 8 of disk seat 1 and enter into vertical chamber 7 with valve rod 13 bottom, link to each other valve body 2 and disk seat 1 upper surface, overlap coil box 3 outside valve body 2 afterwards to interconnect coil box 3, valve body 2 and disk seat 1, at this moment, valve rod 13 activity sets up in disk seat 1. The square rod is abutted against the square hole 20 at the top of the iron core 12, at the moment, the valve rod 13 is located in the longitudinal cavity 7 of the valve seat 1, the valve block 14 is placed in the longitudinal cavity 7 and is connected with the valve rod 13, and then the bolt penetrates through a counter bore of the valve block 14 and is connected with a screw hole at the bottom end of the valve rod 13 until the valve block 14 is fixedly connected with the valve rod 13. The knob supporting cover 9 is arranged at the bottom of the valve seat 1, the ejection spring 15 is placed in the sliding cavity 10 and positioned above the iron core 12, and finally the gland 16 is covered, at the moment, the ejection spring 15 is in a compressed state, and the assembly is completed. Under the condition of power failure, the valve block 14 is positioned at the bottom of the longitudinal cavity 7 through the ejector spring 15 and supported on the external thread connecting cylinder 21 of the knob supporting cover 9, and at the moment, the water inlet channel 4 is communicated with the water outlet channel 5; after the power is on, the iron core 12 moves upwards, the valve block 14 moves upwards to block the water inlet channel 4 and the connecting channel 8, and the closing is realized, as shown in fig. 3, when the valve block 14 moves upwards, the water flow in the cavity 6 cannot flow back. The utility model has reasonable structure, the valve block 14 is positioned below the connecting channel 8, when the valve is closed, the valve block 14 moves upwards and is closed, thereby effectively preventing the condition of backflow; the valve block 14 is connected with the valve rod 13 through a bolt, the knob supporting cover 9 is arranged at the bottom of the valve seat 1, so that the valve block 14 is convenient to mount and dismount, and in the structure, water cannot enter the lower end of the longitudinal cavity, so that the condition of water leakage from the knob supporting cover 9 cannot occur; the upper surface of the valve block 14 is provided with an annular protrusion 17 to match with an annular groove 18 at the top end of the longitudinal cavity 7, so that the sealing performance of the valve block 14 is greatly improved.
The utility model is not described in detail, but is well known to those skilled in the art.
Finally, it is to be noted that: although the present invention has been described in detail with reference to examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (7)
1. A solenoid valve for preventing backflow, comprising: comprises a valve seat (1), a valve body (2), a coil box (3) and a valve block (14), wherein a water inlet channel (4) and a water outlet channel (5) are respectively arranged at two ends inside the valve seat (1), a cavity (6) is arranged at the upper end inside the valve seat (1), a longitudinal cavity (7) is arranged at the lower end inside the valve seat (1), the longitudinal cavity (7) penetrates through the lower surface of the valve seat (1), the water inlet channel (4) is communicated with the side surface of the longitudinal cavity (7), the top end of the longitudinal cavity (7) is communicated with the cavity (6) through a connecting channel (8), the water outlet channel (5) is communicated with the side surface of the cavity (6), a knob supporting cover (9) is arranged at the bottom end of the valve seat (1), the knob supporting cover (9) is in threaded connection with the bottom end of the longitudinal cavity (7), the upper surface of the valve seat (1) is connected with the valve body (2), a sliding cavity (10) is arranged inside the valve body (2), a coil box (3) is arranged outside the valve body (2), an electromagnetic coil (11) is arranged in the coil box (3), an iron core (12) is arranged in the sliding cavity (10), the bottom end of the iron core (12) is connected with a valve rod (13), the bottom end of the valve rod (13) is movably arranged in the longitudinal cavity (7), one end of the valve rod (13) far away from the iron core (12) is connected with the valve block (14) through a bolt, the valve block (14) is movably arranged in the longitudinal cavity (7), the upper end in the sliding cavity (10) is provided with a pushing spring (15), the bottom end of the ejection spring (15) is supported on the top end of the iron core (12), a gland (16) is arranged on the top of the valve body (2) in the sliding cavity (10), the top end of the ejection spring (15) is pressed on the lower surface of the gland (16), and the gland (16) is also pressed on the upper surface of the coil box (3);
an annular groove (18) is formed in the top of the longitudinal cavity (7), an annular protrusion (17) is arranged at the top end of the valve block (14), and the annular protrusion (17) is matched with the annular groove (18);
a groove (19) is formed in the valve block (14), and the groove (19) penetrates through the lower surface of the valve block (14);
the upper surface of the iron core (12) is provided with a square hole (20).
2. The backflow prevention solenoid valve as recited in claim 1, wherein: indulge the inner wall in chamber (7) bottom and be provided with the internal thread, knob support lid (9) are provided with external screw thread connecting cylinder (21), external screw thread connecting cylinder (21) cooperate with the internal thread of indulging chamber (7) bottom, valve block (14) bottom support in external screw thread connecting cylinder (21).
3. A backflow prevention solenoid valve as claimed in claim 1, wherein: the outer wall of the valve block (14) is attached to the inner wall of the longitudinal cavity (7) and is in sliding connection with the inner wall of the longitudinal cavity, and the outer diameter of the iron core (12) is consistent with the inner diameter of the sliding cavity (10).
4. The backflow prevention solenoid valve as recited in claim 1, wherein: the distance from the top end of the longitudinal cavity (7) to the bottom of the water inlet channel (4) is less than the height of the valve block (14).
5. The backflow prevention solenoid valve as recited in claim 1, wherein: the inner diameter of the longitudinal cavity (7) is larger than that of the connecting channel (8).
6. A backflow prevention solenoid valve as claimed in claim 1, wherein: the bottom end of the valve rod (13) is provided with a screw hole, the valve block (14) is provided with a counter bore, and the counter bore of the valve block (14) corresponds to the screw hole at the bottom end of the valve rod (13) and is connected with the screw hole through a bolt.
7. A backflow prevention solenoid valve as claimed in claim 1, wherein: the knob supporting cover (9) is provided with an air hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221511412.8U CN217003111U (en) | 2022-06-17 | 2022-06-17 | Electromagnetic valve capable of preventing backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221511412.8U CN217003111U (en) | 2022-06-17 | 2022-06-17 | Electromagnetic valve capable of preventing backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217003111U true CN217003111U (en) | 2022-07-19 |
Family
ID=82377704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221511412.8U Expired - Fee Related CN217003111U (en) | 2022-06-17 | 2022-06-17 | Electromagnetic valve capable of preventing backflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217003111U (en) |
-
2022
- 2022-06-17 CN CN202221511412.8U patent/CN217003111U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220719 |