CN211525591U - Diaphragm type electromagnetic valve with embedded metal part - Google Patents
Diaphragm type electromagnetic valve with embedded metal part Download PDFInfo
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- CN211525591U CN211525591U CN201921835060.XU CN201921835060U CN211525591U CN 211525591 U CN211525591 U CN 211525591U CN 201921835060 U CN201921835060 U CN 201921835060U CN 211525591 U CN211525591 U CN 211525591U
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- valve
- diaphragm
- pilot
- iron core
- spring
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Abstract
The utility model discloses an embedded metal piece diaphragm type electromagnetic valve, which comprises a valve body and a valve cover, wherein the valve body is respectively provided with an inlet and an outlet, and a valve port is arranged in the valve body; a pilot assembly is arranged on the valve cover and comprises a sleeve, a static iron core, a coil and a movable iron core, a pilot cavity is formed between the valve cover and the pilot assembly and is communicated with the outlet through a pilot runner, a sealing gasket for sealing the pilot runner is arranged at the bottom of the movable iron core, and a first spring is arranged between the movable iron core and the connecting seat in a propping manner; the valve cover is fixedly arranged on the valve body, a diaphragm which is in sealing fit with the valve port is arranged between the valve cover and the valve body, a framework is arranged inside the diaphragm, a valve cavity is formed between the diaphragm and the valve cover, the valve cavity is communicated with the pilot cavity through a connecting flow passage, and a second spring is arranged between the diaphragm and the valve cover in a propping manner; the valve cavity is communicated with the inlet through a throttling channel, and the minimum diameter of the throttling channel is smaller than that of the pilot flow channel. The utility model discloses when possessing the delay response function, still have simple structure and the high advantage of leakproofness.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to embedded metalwork diaphragm formula solenoid valve.
Background
Valves are used in fluid systems to control the direction, pressure, and flow of a fluid, to allow or stop the flow of media in pipes and equipment, and to control the flow. Generally, when a valve performs an opening or closing action, the valve usually responds instantaneously, and with the development of science and technology, the valve is widely applied and basically adaptable to a common working environment, but some working environments need delayed valve response, but the common valve on the market cannot meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an embedded metalwork diaphragm formula solenoid valve to prior art's defect with not enough, when possessing the time delay response function, still have simple structure and the high advantage of leakproofness.
The utility model provides a technical scheme that its technical problem adopted is: a diaphragm type electromagnetic valve with an embedded metal part comprises a valve body and a valve cover, wherein an inlet and an outlet are respectively formed in the valve body, and a valve port communicated with the inlet and the outlet is formed in the valve body; the valve cover is provided with a pilot assembly, the pilot assembly comprises a sleeve, a static iron core, a coil and a movable iron core, the sleeve is fixedly arranged on the valve cover through a connecting seat, the static iron core is fixedly arranged at the top end of the sleeve and seals the sleeve, the coil is sleeved outside the sleeve, the valve cover, the connecting seat, the sleeve and the static iron core are matched together to form a pilot cavity, the pilot cavity is communicated with the outlet through a pilot runner, the movable iron core is movably arranged in the pilot cavity, a sealing gasket is embedded at the bottom of the movable iron core, a first spring is arranged between the movable iron core and the connecting seat in a supporting manner, and the first spring always tends to push the movable iron core to the pilot runner, so that the sealing gasket seals the pilot runner; the valve cover is fixedly arranged on the valve body, a diaphragm which is in sealing fit with the valve port is pressed between the valve cover and the valve body, a framework is arranged inside the diaphragm, a valve cavity is formed between the diaphragm and the valve cover, the valve cavity is communicated with the pilot cavity through a connecting flow channel, a second spring is arranged between the diaphragm and the valve cover in a propping manner, and the second spring always tends to push the diaphragm to the valve port, so that the diaphragm closes the valve port; the valve cavity is communicated with the inlet through a throttling channel, and the minimum diameter of the throttling channel is smaller than that of the pilot flow channel.
Furthermore, the bottom of moving the iron core extends along the circumferencial direction and has the lug, the one end of first spring with the inside wall of connecting seat offsets, the other end of first spring with the lug offsets, and the installation of the first spring of being convenient for has guaranteed first spring and has moved the reliability of being connected of iron core, has improved the leakproofness of sealed pad and guide's runner to a certain extent.
Furthermore, a groove is axially formed in the top end of the diaphragm, one end of the second spring abuts against the inner side wall of the valve cover, and the other end of the second spring abuts against the groove, so that the second spring is convenient to mount, the connection reliability of the second spring and the diaphragm is guaranteed, and the sealing performance of the diaphragm and the valve port is improved to a certain extent.
Furthermore, the diaphragm is bowl-shaped, so that the sealing property of the valve cavity is improved.
Further, the first spring and the second spring are both conical.
Furthermore, the valve gap passes through the fix with screw on the valve body, the valve gap with inlay between the valve body and be equipped with O type circle, improve the leakproofness.
Furthermore, a filter screen is arranged at the joint of the throttling channel and the inlet, so that the entering fluid is relatively clean.
Further, a nut is fixed at the top end of the static iron core and matched with the coil stop.
Furthermore, the coil is electrically connected with a wiring terminal.
The utility model has the advantages that: firstly, a valve cover is arranged on a valve body, a pilot assembly is arranged on the valve cover, a pilot cavity is formed by the cooperation of the valve cover, a connecting seat, a sleeve and a static iron core, and the pilot cavity is communicated with an outlet through a pilot runner; a diaphragm is pressed between the valve cover and the valve body, a valve cavity is formed between the diaphragm and the valve cover, the valve cavity is communicated with the pilot cavity through a connecting flow passage, the valve cavity is communicated with the inlet through a throttling passage, and the minimum diameter of the throttling passage is smaller than that of the pilot flow passage; under normal conditions, when the coil is not electrified, the pilot flow channel and the valve port are respectively in a closed state under the elastic forces of the first spring and the second spring, fluid at the inlet cannot flow to the outlet, but the fluid at the inlet flows to the valve cavity through the throttling channel, and the pilot chamber and the valve cavity are filled with the fluid through the connecting flow channel, so that the force of the diaphragm closing the valve port is not only from the second spring but also from the pressure of the fluid, and the sealing property of the valve port is improved; when the coil is electrified, the movable iron core is adsorbed by the static iron core, the elasticity of the first spring is overcome, the pilot flow channel is opened, fluid in the pilot cavity and the valve cavity flows to the outlet, the pressure is relatively reduced due to the reduction of the fluid, the valve port is opened, meanwhile, the fluid at the inlet still flows to the valve cavity through the throttling channel, and the minimum diameter of the throttling channel is smaller than the minimum diameter of the pilot flow channel, so that the fluid in the valve cavity is slowly reduced, the pressure is slowly reduced, the valve port is slowly opened when being opened, and the valve port is not completely opened until the fluid in the valve cavity is discharged; similarly, when the valve port is closed, the valve port is completely closed only when the valve cavity and the pilot cavity are filled with fluid, so that the purpose of delayed response is achieved;
secondly, the framework is arranged in the diaphragm, so that the strength of the diaphragm is increased, and the sealing performance of the diaphragm when the diaphragm is connected with the valve port is improved;
thirdly, the sealing gasket is embedded at the bottom of the movable iron core, so that the sealing performance of the pilot runner is ensured;
fourthly, a first spring is arranged between the movable iron core and the connecting seat in an abutting mode, and a second spring is arranged between the diaphragm and the valve cover in an abutting mode, so that the sealing performance of the pilot runner and the sealing performance of the valve port are guaranteed respectively;
generally, the utility model discloses when possessing the time delay response function, still have simple structure and the high advantage of leakproofness.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is an enlarged schematic view at B in fig. 1.
Shown in the figure: 1-a valve body; 1.1-inlet; 1.2-outlet; 1.3-valve port; 2-valve cover; 3-sleeving a pipe; 4-a stationary iron core; 5-a coil; 5.1-connecting terminal; 6-movable iron core; 6.1-bump; 7-a connecting seat; 8-a pilot cavity; 8.1-a pilot flow channel; 9-a sealing gasket; 10-a first spring; 11-a membrane; 11.1-framework; 11.2-grooves; 12-a valve cavity; 12.1-connecting the flow channel; 12.2-throttling channel; 13-a second spring; 14-a screw; 15-O-ring; 16-a filter screen; 17-nut.
Detailed Description
For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:
as shown in fig. 1 to 3, a diaphragm type solenoid valve with an embedded metal part comprises a valve body 1 and a valve cover 2, wherein an inlet 1.1 and an outlet 1.2 are respectively formed on the valve body 1, and a valve port 1.3 for communicating the inlet 1.1 with the outlet 1.2 is arranged in the valve body 1; the valve cover 2 is provided with a pilot assembly, the pilot assembly comprises a sleeve 3, a static iron core 4, a coil 5 and a movable iron core 6, the sleeve 3 is fixedly arranged on the valve cover 2 through a connecting seat 7, the static iron core 4 is fixedly arranged at the top end of the sleeve 3 and seals the sleeve 3, the coil 5 is sleeved outside the sleeve 3, the valve cover 2, the connecting seat 7, the sleeve 3 and the static iron core 4 are matched together to form a pilot cavity 8, the pilot cavity 8 is communicated with an outlet 1.2 through a pilot runner 8.1, the movable iron core 6 is movably arranged in the pilot cavity 8, a sealing gasket 9 is embedded at the bottom of the movable iron core 6, a first spring 10 is arranged between the movable iron core 6 and the connecting seat 7 in a propping manner, the first spring 10 always tends to push the movable iron core 6 to the pilot runner 8.1, and the; the valve cover 2 is fixedly arranged on the valve body 1, a diaphragm 11 which is in sealing fit with the valve port 1.3 is pressed between the valve cover 2 and the valve body 1, a framework 11.1 is arranged inside the diaphragm 11, a valve cavity 12 is formed between the diaphragm 11 and the valve cover 2, the valve cavity 12 is communicated with the pilot cavity 8 through a connecting flow channel 12.1, a second spring 13 is arranged between the diaphragm 11 and the valve cover 2 in a propping manner, and the second spring 13 always has a tendency of pushing the diaphragm 11 to the valve port 1.3, so that the diaphragm 11 closes the valve port 1.3; the valve cavity 12 is communicated with the inlet 1.1 through a throttling channel 12.2, and the minimum diameter of the throttling channel 12.2 is smaller than that of the pilot flow channel 8.1.
The valve has the advantages that the connecting seat 7 is fixedly connected with the valve cover 2 through threads, and an O-shaped ring 15 is embedded at the joint of the connecting seat 7 and the valve cover 2.
Specifically, the inlet 1.1 and the outlet 1.2 are both provided with internal thread structures, so that the electromagnetic valve is convenient to install in a pipeline.
Specifically, the second spring 13, the diaphragm 11 and the valve port 1.3 are sequentially arranged from top to bottom and are positioned on the same axis, so that the sealing performance of the valve port 1.3 when the valve port is closed is ensured.
The bottom of movable iron core 6 has lug 6.1 along the circumferencial direction extension, and the one end of first spring 10 offsets with the inside wall of connecting seat 7, and the other end of first spring 10 offsets with lug 6.1.
Specifically, the diaphragm 11 is bowl-shaped and made of flexible materials, the framework 11.1 is processed inside the diaphragm 11 in a cladding casting mode, preferably, the framework 11.1 is made of brass materials, and the diaphragm 11 is made of NBR materials; the top of diaphragm 11 is equipped with recess 11.2 along the axial, is equipped with annular groove (not shown) on the inside wall of valve gap 2, and the upper end of second spring 13 supports in annular groove (not shown), and the lower end of second spring 13 supports and locates in recess 11.2.
The first spring 10 and the second spring 13 are both conical.
The valve cover 2 is fixed on the valve body 1 through a screw 14, and an O-shaped ring 15 is embedded between the valve cover 2 and the valve body 1; a filter screen 16 is arranged at the joint of the throttling channel 12.2 and the inlet 1.1.
Specifically, during processing, the upper half section of the throttling channel 12.2 is processed on the valve cover 2 and communicated with the valve cavity 12; the lower half section is processed on the valve body 1 and is communicated with the inlet 1.1, and an O-shaped ring 15 and a filter screen 16 are embedded between the upper half section and the lower half section during installation; in a similar way, the pilot flow channel 8.1 is also formed by the processing mode, and an O-shaped ring 15 is embedded between the pilot flow channels 8.1 during installation.
And a nut 17 is fixed at the top end of the static iron core 4, and the nut 17 is matched with the coil 5 in a stop way.
The coil 5 is electrically connected to a terminal 5.1 for connection to a controller (not shown) for controlling the opening or closing of the valve.
The utility model discloses a concrete theory of operation as follows: normally, when the coil 5 is not powered, the pilot flow channel 8.1 and the valve port 1.3 are in a closed state under the elastic forces of the first spring 10 and the second spring 13, respectively, the fluid at the inlet 1.1 cannot flow to the outlet 1.2, but the fluid at the inlet 1.1 flows to the valve cavity 12 through the throttle flow channel 12.2, and the pilot flow channel 8 and the valve cavity 12 are filled with the fluid in sequence through the connecting flow channel 12.2, so that the force of the diaphragm 11 for closing the valve port 1.3 not only comes from the second spring 13, but also comes from the pressure of the fluid, so that the diaphragm 11 is tightly pressed on the valve port 1.3, and the valve port 1.3 is kept closed; when the coil 5 is powered on, the movable iron core 6 is adsorbed by the static iron core 4, the elastic force of the first spring 10 is overcome, the pilot flow channel 8.1 is opened, at the moment, the fluid in the pilot chamber 8.1 and the valve chamber 12 flows to the outlet 1.2, the pressure is relatively reduced due to the reduction of the fluid, the diaphragm 11 is pushed open, the valve port 1.3 is opened, meanwhile, the fluid at the inlet 1.1 still flows to the valve chamber 12 through the throttle channel 12.2, and at the moment, the outflow speed of the fluid in the pilot chamber 8 and the valve chamber 12 is higher than the inflow speed, so that the fluid in the valve chamber 12 is slowly reduced, the pressure is relatively slowly reduced, the valve port 1.3 is also slowly opened when being opened, and the valve port 1.3 is not completely opened until the fluid in the valve chamber 12 is discharged; similarly, after the coil 5 is not powered, the first spring 10 moves the plunger 6 downward, the sealing gasket 9 seals the pilot flow channel 8.1, the valve cavity 12 and the pilot cavity 8 are gradually filled with fluid, so that the pressure above the diaphragm 11 is higher than the pressure below the diaphragm 11 again, the diaphragm 11 slowly seals the valve port 1.3 until the valve cavity 12 is filled with fluid, and the valve port 1.3 is completely closed, thereby achieving the purpose of delayed response.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (9)
1. A diaphragm type electromagnetic valve with an embedded metal part comprises a valve body (1) and a valve cover (2), wherein an inlet (1.1) and an outlet (1.2) are respectively formed in the valve body (1), and a valve port (1.3) communicated with the inlet (1.1) and the outlet (1.2) is formed in the valve body (1);
the valve cover (2) is provided with a pilot assembly, the pilot assembly comprises a sleeve (3), a static iron core (4), a coil (5) and a movable iron core (6), the sleeve (3) is fixedly arranged on the valve cover (2) through a connecting seat (7), the static iron core (4) is fixedly arranged at the top end of the sleeve (3) and seals the sleeve (3), the coil (5) is sleeved outside the sleeve (3), the valve cover (2), the connecting seat (7), the sleeve (3) and the static iron core (4) are jointly matched to form a pilot cavity (8), the pilot cavity (8) is communicated with an outlet (1.2) through a pilot runner (8.1), the movable iron core (6) is movably arranged in the pilot cavity (8), a sealing gasket (9) is embedded at the bottom of the movable iron core (6), and a first spring (10) is arranged between the movable iron core (6) and the connecting seat (7), the first spring (10) always tends to push the movable iron core (6) to the pilot flow channel (8.1), so that the sealing gasket (9) seals the pilot flow channel (8.1);
the valve cover (2) is fixedly arranged on the valve body (1), a diaphragm (11) which is in sealing fit with the valve port (1.3) is arranged between the valve cover (2) and the valve body (1) in a pressing mode, a framework (11.1) is arranged inside the diaphragm (11), a valve cavity (12) is formed between the diaphragm (11) and the valve cover (2), the valve cavity (12) is communicated with the pilot cavity (8) through a connecting flow channel (12.1), a second spring (13) is arranged between the diaphragm (11) and the valve cover (2) in a supporting mode, the second spring (13) always tends to push the diaphragm (11) to the valve port (1.3), and the diaphragm (11) is enabled to close the valve port (1.3); the method is characterized in that: the valve cavity (12) is communicated with the inlet (1.1) through a throttling channel (12.2), and the minimum diameter of the throttling channel (12.2) is smaller than that of the pilot flow channel (8.1).
2. The diaphragm solenoid valve with embedded metal piece according to claim 1, wherein: the bottom of the movable iron core (6) extends along the circumferential direction to form a convex block (6.1), one end of the first spring (10) is abutted to the inner side wall of the connecting seat (7), and the other end of the first spring (10) is abutted to the convex block (6.1).
3. The diaphragm solenoid valve with embedded metal piece according to claim 2, wherein: the top of diaphragm (11) is equipped with recess (11.2) along the axial, the one end of second spring (13) with the inside wall of valve gap (2) offsets, and the other end of second spring (13) is supported and is located in recess (11.2).
4. The diaphragm solenoid valve with embedded metal piece according to claim 3, wherein: the membrane (11) is bowl-shaped.
5. The diaphragm solenoid valve with embedded metal piece according to claim 1, wherein: the first spring (10) and the second spring (13) are both conical.
6. The diaphragm solenoid valve with embedded metal piece according to claim 1, wherein: the valve cover (2) is fixed on the valve body (1) through a screw (14), and an O-shaped ring (15) is embedded between the valve cover (2) and the valve body (1).
7. The diaphragm solenoid valve with embedded metal piece according to claim 1, wherein: a filter screen (16) is arranged at the joint of the throttling channel (12.2) and the inlet (1.1).
8. The diaphragm solenoid valve with embedded metal piece according to claim 1, wherein: and a nut (17) is fixed at the top end of the static iron core (4), and the nut (17) is matched with the coil (5) in a stop way.
9. The diaphragm solenoid valve with embedded metal piece according to claim 8, wherein: and the coil (5) is electrically connected with a wiring terminal (5.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921835060.XU CN211525591U (en) | 2019-10-29 | 2019-10-29 | Diaphragm type electromagnetic valve with embedded metal part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921835060.XU CN211525591U (en) | 2019-10-29 | 2019-10-29 | Diaphragm type electromagnetic valve with embedded metal part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211525591U true CN211525591U (en) | 2020-09-18 |
Family
ID=72442592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921835060.XU Active CN211525591U (en) | 2019-10-29 | 2019-10-29 | Diaphragm type electromagnetic valve with embedded metal part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211525591U (en) |
-
2019
- 2019-10-29 CN CN201921835060.XU patent/CN211525591U/en active Active
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