CN213841418U - Solenoid valve with hard seal structure - Google Patents
Solenoid valve with hard seal structure Download PDFInfo
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- CN213841418U CN213841418U CN202022876098.0U CN202022876098U CN213841418U CN 213841418 U CN213841418 U CN 213841418U CN 202022876098 U CN202022876098 U CN 202022876098U CN 213841418 U CN213841418 U CN 213841418U
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Abstract
The utility model relates to a solenoid valve with a hard sealing structure, which comprises a valve body and a valve component, wherein the valve body is internally provided with a fluid channel and a containing cavity, and the valve component is arranged in the containing cavity; the valve component comprises a liquid inlet seat, a valve core matched with the liquid inlet seat and used for closing or opening a fluid channel, and a driving mechanism driving the valve core to reciprocate; the feed liquor seat is equipped with the guiding hole that allows the case lower extreme to stretch into, and the feed liquor seat middle section is equipped with the feed liquor hole that a plurality of arranged along feed liquor seat circumference, and the feed liquor seat hypomere is equipped with case fluid passage and is located case fluid passage upper portion and is used for adjusting the flow's runner inclined plane, and the case is from last big footpath section, inclined plane section, path section and the case tip inclined plane of down including in proper order. Compared with the prior art, the utility model discloses a hard sealed assembly methods is difficult to cause the leakage, greatly increased solenoid valve's life.
Description
Technical Field
The utility model relates to a solenoid valve especially relates to a solenoid valve with hard seal structure.
Background
The air conditioning system of the automobile is easy to leak, and the working refrigerant medium of the air conditioning system is usually CO2. However, CO2The critical pressure of the refrigerant is high (Pc is 7.38MPa), the critical temperature of the refrigerant is low (Tc is 31.25 ℃), and in order to achieve good comprehensive refrigeration performance, a refrigeration system using carbon dioxide as a refrigerant must work in a transcritical region, and the working pressure exceeds the critical pressure, which is much higher than that of the current automobile air-conditioning system. At present, an electronic expansion valve/an electronic stop valve working in a high-pressure refrigeration system smoothly drives a valve core to move under high pressure, on one hand, the driving force is increased by adopting a large-specification motor, a speed reducer and other modes, and the mode has the defects of complex structure, high energy consumption, difficulty in miniaturization and the like; on the other hand, the end of the valve core is designed into a needle point shape, so that the cross-sectional area is reduced, and the force acting on the valve core is reduced, and the mode comprises the following steps: complex valve core processing, large flow regulation nonlinear area and the like.
Patent CN 111188912 a discloses an electromagnetic valve, which has the advantages of easy driving of the valve core, miniaturization of the valve body, accurate and stable flow regulation, etc., however, the following problems still exist: the valve core seat and the liquid inlet seat are separately arranged, the problem of leakage is easy to occur when the valve core seat and the liquid inlet seat are assembled, and particularly CO (carbon monoxide) with high-pressure refrigerant medium is used2. In addition, the valve core seat and the liquid inlet seat are sealed by rubber sealing rings, so that the problems of leakage and failure are easily caused, and the service life of the valve is greatly shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solenoid valve with hard seal structure in order to overcome the problems of difficult sealing and easy leakage existing in the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a solenoid valve with a hard sealing structure comprises a valve body and a valve component, wherein the valve body is internally provided with a fluid passage and a containing cavity, the valve component is arranged in the containing cavity, the fluid passage is communicated with the containing cavity,
the valve assembly comprises a liquid inlet seat arranged at the bottom of the accommodating cavity, a valve core matched with the liquid inlet seat and used for closing or opening the fluid channel, and a driving mechanism for driving the valve core to reciprocate;
the liquid inlet seat is provided with a guide hole allowing the lower end of the valve core to extend into the liquid inlet seat, the middle section of the liquid inlet seat is provided with a plurality of liquid inlet holes arranged along the circumferential direction of the liquid inlet seat, and the lower section of the liquid inlet seat is provided with a valve core fluid channel and a flow channel inclined plane which is positioned at the upper part of the valve core fluid channel and used for adjusting the flow;
the valve core sequentially comprises a large-diameter section, an inclined plane section, a small-diameter section and a valve core end inclined plane from top to bottom, wherein the diameter of the small-diameter section is smaller than that of the valve core fluid channel, and the diameter of the large-diameter section is larger than that of the valve core fluid channel.
Furthermore, the liquid inlet seat is made of a hard material, a lower bulge is machined at the lower end of the liquid inlet seat, and the lower bulge is embedded into the step surface of the valve body during axial compression, so that hard sealing connection is realized;
processing out the circular arc arch on the upper portion circumference wall of feed liquor seat, during the assembly the circular arc arch extrudees the inner wall circumference that holds the chamber, realizes interference fit and fluid medium and seals.
Furthermore, the driving mechanism comprises a screw rod and a driving element for driving the screw rod to rotate, an axial through hole is formed in the valve core, the screw rod is connected with the axial through hole through a thread, and the thread converts the rotation of the screw rod into the linear motion of the valve core; and a pressure balance channel is arranged on the screw rod and/or the valve core, and fluid entering the valve body is filled in the cavity where the upper end surface and the lower end surface of the valve core are located through the pressure balance channel.
Furthermore, the accommodating cavity is a cylindrical cavity with a step structure arranged inside, the driving mechanism further comprises a rotor mounting seat which is mounted on the step structure in a matching manner, and the driving element comprises a rotor which is mounted on the rotor mounting seat and a stator which is sleeved on the periphery of the rotor and drives the rotor to rotate;
the rotor mounting seat is fixed on the valve body through threads, a central stepped through hole for accommodating the valve core is arranged in the rotor mounting seat, a guide groove is arranged in the central stepped through hole, a guide boss is arranged at the upper end of the valve core, and the guide boss is connected with the guide groove in a sliding manner;
the tip of rotor mount pad is equipped with that the mount pad is protruding, and when the feed liquor seat axial compresses tightly, the protruding embedding of mount pad the step face of valve body realizes hard sealing connection.
Furthermore, an axial sealing element accommodating cavity with a step hole structure is arranged above the guide hole of the liquid inlet seat, and a sealing ring in contact connection with the valve element, an axial sealing O-shaped ring sleeved on the outer side of the sealing ring and a transition plate arranged at the upper parts of the sealing ring and the axial sealing O-shaped ring are arranged in the axial sealing element accommodating cavity; the rotor mounting seat extrudes the axial sealing O-shaped ring through the transition plate.
Furthermore, a stator shell is arranged outside the stator and fixedly connected to the upper end face of the valve body; the outer side wall of the rotor mounting seat is provided with a notch for placing an upper sealing ring, and the rotor mounting seat and the stator shell are subjected to dustproof sealing through the upper sealing ring.
Further, a platform surface (or a channel groove) is processed on the threaded cylindrical surface of the screw rod, and the pressure balance channel is formed between the platform surface and the axial through hole of the valve core.
Further, the accommodating cavity forms a sealing shell of a sealing space, the sealing shell covers the outside of the rotor, and the lower end of the sealing shell is fixedly and hermetically connected with the rotor mounting seat through a spigot;
the rotor is limited and installed inside the sealed shell through an upper bearing and a lower bearing, the lower bearing is installed on a step of a central step-shaped through hole of the rotor installation seat, the upper bearing is installed in a bearing seat, the circumference of the bearing seat is installed on the inner wall of the sealed shell in a matched mode, and the upper end of the bearing seat is abutted to the inner surface of the sealed shell.
Furthermore, a plurality of containing cavities are formed in the same valve body, and a valve assembly is installed in each containing cavity.
Furthermore, the valve body is provided with a pressure relief channel communicated with the fluid channel, and a pressure relief valve is installed at a port of the pressure relief channel.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses make integrative feed liquor seat with current case seat + feed liquor seat, not only reduced a spare part, improve the assembly effect, the most important is the sealing problem when can avoiding case seat and feed liquor seat to assemble, avoids high-pressure refrigerant medium CO2Leakage of (2); in addition, the lower end of the liquid inlet seat and the lower end of the rotor mounting seat are provided with protruding structures, when the liquid inlet seat and the rotor mounting seat are axially compressed, the protrusions are embedded into the step surface of the step hole of the valve body to realize hard sealing connection, the outer circumference of the liquid inlet seat is provided with arc protrusions, and the arc protrusions extrude the circumference of the inner wall of the accommodating cavity during assembly to realize hard sealing in interference fit.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a sectional view taken along line H-H of FIG. 2;
FIG. 4 is a sectional view taken along line J-J of FIG. 3;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a front view of the valve body of the present invention;
FIG. 7 is a cross-sectional view taken along line M-M of FIG. 6;
fig. 8 is a top view of the valve body of the present invention;
FIG. 9 is a cross-sectional view taken along line K-K of FIG. 8;
fig. 10 is a top view of the valve cartridge of the present invention;
FIG. 11 is a cross-sectional view taken along line Q-Q of FIG. 6;
fig. 12 is a front sectional view of the middle liquid inlet seat of the present invention;
fig. 13 is a top view of the rotor mounting base of the present invention;
FIG. 14 is a cross-sectional view taken along line P-P of FIG. 13;
in the figure:
1 is a valve body, 101 is a first accommodating cavity, 102 is a second accommodating cavity, 103 is a longitudinal channel, 104 is a first transverse channel, 105 is a second transverse channel, and 106 is a third transverse channel;
3, a liquid inlet seat, 301, a liquid inlet hole, 302, an arc bulge, 303, a guide hole, 304, an axial sealing element accommodating cavity, 305, a flow channel inclined plane, 306, a valve core fluid channel and 307, wherein the liquid inlet seat is a liquid inlet seat;
4, a rotor mounting seat, a central step-shaped through hole 401, a guide groove 402 and a mounting seat bulge 403 are arranged;
5, a valve core, 501, a stepped hole, 502, a fine-tooth precision internal thread, 503, a guide boss, 504, a slope at the end part of the valve core, 505, a small-diameter section, 506, and 507, a large-diameter section;
the structure comprises a screw rod 6, a rotor 7, a lower bearing 8, an upper bearing 9, a bearing seat 10, a sealing shell 11, a stator 12, a stator control plate 13, a pressure release valve 14, a sealing ring 18, an axial sealing O-shaped ring 19, a transition plate 20, an upper sealing ring 22 and a stator shell 23.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
A solenoid valve with a hard sealing structure is shown in figures 1, 2, 3, 4 and 5 and comprises valve bodies 1, a liquid inlet seat 3, a rotor mounting seat 4, a valve core 5, a screw rod 6, a rotor 7, a lower bearing 8, an upper bearing 9, a bearing seat 10, a sealing shell 11, a stator 12, a stator control plate 13, a pressure release valve 14, a stator shell 23 and other valve assemblies.
As shown in fig. 6, 7, 8 and 9, the valve body 1 is provided with a first accommodating cavity 101, a second accommodating cavity 102, a longitudinal channel 103, a first transverse channel 104, a second transverse channel 105 and a third transverse channel 106; a first transverse channel 104 is communicated with a longitudinal channel 103 in the valve body 1, a first accommodating cavity 101 and a second accommodating cavity 102 are communicated with the longitudinal channel 103 through respective vertical channels, a pressure release valve 14 is installed at the end of the longitudinal channel 103, and when the pressure in the longitudinal channel 103 exceeds a set value, the pressure release valve 14 is opened to release the pressure; the second transverse channel 105 communicates with the first containing chamber 101; the third transverse passage 106 is communicated with the second accommodating cavity 102, the first transverse passage 104, the second transverse passage 105, the third transverse passage 106 and the longitudinal passage 103 form a fluid passage, fluid can enter from the second transverse passage 105 and the third transverse passage 106, flow out through the longitudinal passage 103 and the first transverse passage 104, can flow in from the first transverse passage 104, flow out from the second transverse passage 105, flow in from the second transverse passage 105 and flow out from the first transverse passage 104, and the flow of the fluid in the solenoid valve is bidirectional. The holding cavity is cylindrical, the axial design has a step, and two sets of valve components are respectively installed in the two holding cavities. The liquid inlet seat 3 and the rotor mounting seat 4 are sequentially mounted in the accommodating cavity from bottom to top, the screw rod 6 is connected with the valve core 5 through threads, and the rotation of the screw rod 6 is converted into the up-and-down linear motion of the valve core 5 through threads. The valve core 5 and the liquid inlet seat 3 are mutually matched to realize flow regulation.
As shown in fig. 10 and 11, a through stepped hole 501 is formed in the center of the valve element 5, a fine-pitch precision internal thread 502 that engages with the screw rod 6 is formed in the upper section of the stepped hole 501, and the valve element 5 is provided with a guide boss 503, a large diameter section 507, a slope section 506, a small diameter section 505, and a valve element end slope 504 that is provided on the bottom end face of the valve element 5 in this order from top to bottom.
As shown in fig. 4, the inlet seat 3 is placed at the bottom of the accommodating chamber. As shown in fig. 12, the liquid inlet seat 3 is provided with a guide hole 303 allowing the lower end of the valve element 5 to extend into, the middle section of the liquid inlet seat 3 is provided with a plurality of liquid inlet holes 301 arranged along the circumferential direction of the liquid inlet seat 3, the lower section of the liquid inlet seat 3 is provided with a valve element fluid channel 306 and a flow channel inclined plane 305 located at the upper part of the valve element fluid channel 306 and used for adjusting the flow rate, the liquid inlet seat 3 is made of a hard material, an arc protrusion 302 is processed on the circumferential wall of the upper part of the liquid inlet seat, and the arc protrusion 302 extrudes the circumference of the inner wall of the accommodating cavity during assembly to realize interference fit and fluid medium sealing; the lower end of the liquid inlet seat 3 is provided with a lower bulge 307, and the lower bulge 307 is embedded into the step surface of the valve body when the liquid inlet seat is axially compressed, so that hard sealing connection is realized.
As shown in fig. 11, the lower end surface of the valve core 5 is designed with a valve core end inclined surface 504 matched with the flow channel inclined surface 305, and in the large flow rate adjusting stage, the channel between the valve core end inclined surface 504 and the flow channel inclined surface 305 is the flow channel of the refrigerant, and the sectional area of the flow channel is linearly adjusted by adjusting the up-down position of the valve core 5, so as to linearly adjust the refrigerant flow rate. The small-diameter section 505 of the valve core 5 is slightly smaller than the bore diameter of the valve core fluid channel 306; the large diameter section 507 is larger than the bore diameter of the spool fluid passage 306, and when the spool is lowered to a certain extent, the inclined surface section 506 comes into contact with the spool fluid passage 306, thereby achieving the function of a shutoff valve. By adjusting different positions of the valve core 5 in the liquid inlet seat 3, the same valve can stop the flow of the refrigerant between the channels, namely, the valve is used as a stop valve, and can realize the expansion of the refrigerant between the channels, namely, the valve is used as an expansion valve.
A plurality of liquid inlet holes 301 are formed in the circumferential direction of the lower portion of the liquid inlet seat 3, so that the flow velocity of entering refrigerants is reduced, noise generated by the flowing of the refrigerants is reduced, and the refrigerants are prevented from directly impacting the valve core 5; the center of the liquid inlet seat 3 is provided with a guide hole 303 for accommodating the valve core 5, so that the valve core 5 can move up and down for centering support. An axial sealing element receiving cavity 304 is formed in the upper end surface of the liquid inlet seat 3, and as shown in fig. 5, a sealing ring 18, an axial sealing o-ring 19 and a transition plate 20 are arranged in the axial sealing element receiving cavity 304. The force transmitted from the rotor mounting seat 4 enables the axial sealing o-shaped ring 19 to deform through the transition plate 20 so as to press the sealing ring 18 to be tightly attached to the valve core 5 supported in the guide hole 303, and sealing during up-and-down movement of the valve core 5 is ensured; the large-diameter section 507 of the valve core 5 is in oil film sliding fit with the guide hole 303 to ensure the linear motion of the valve core 5.
The rotor mounting seat 4 is fixedly connected to the valve body 1 through threads, a central stepped through hole 401 and a guide groove 402 with a rectangular structure are formed in the center of the rotor mounting seat, a guide boss 503 of the valve core 5 is matched with the guide groove 402 to limit the valve core 5 to rotate, and the rotary motion of the screw rod 6 is converted into the up-and-down motion of the valve core 5 through thread pair transmission and the guide of the guide boss 503.
The screw rod 6 is fixedly connected with the rotor 7 in an integrated pouring or interference fit mode, a platform surface is processed on a threaded cylindrical surface of the screw rod 6, fine-tooth precise external threads are processed on the outer circumference of the screw rod 6 and meshed with fine-tooth precise internal threads 502, a pressure balance channel is formed between the platform surface of the screw rod 6 and a stepped hole 501 of the valve core 5, the pressure balance channel enables a cavity where the upper end surface of the valve core 5 is located and a cavity where the lower end surface of the valve core 5 is located to be communicated, a refrigerant fills the cavity where the upper end surface and the lower end surface of the valve core 5 are located through a gap between the platform surface and the stepped hole 501, and the upper end surface and the lower end surface of the refrigerant are located in the same pressure area of the refrigerant.
As shown in fig. 4, the rotor 7 is made of permanent magnetic silicon steel sheets, is accommodated in the inner cavity of the sealed housing 11, and is supported by the upper bearing 9 and the lower bearing 8, and under the supporting limit of the upper bearing and the lower bearing, the rotor is driven by the stator 12 to rotate around the axis, and the up-and-down movement of the rotor is eliminated. The upper bearing 9 is arranged in a bearing seat 10, the circumference of the bearing seat 10 is matched in the inner cavity of the sealed shell 11, and the upper end of the bearing seat props against the bottom surface of the sealed shell 11. The sealing shell 11 is matched with the rotor mounting seat 4 through a spigot, and is fixedly connected with the rotor mounting seat 4 in a laser welding mode. As shown in fig. 1 and 5, the stator 12 is sleeved on the periphery of the rotor shell 11, and is fixedly connected with the upper end face of the valve body 1 through a bolt, the stator shell 23 is sleeved outside the stator 12, the driving and controlling plate 13 is fixed in the stator shell 23, and is connected with the coil of the stator in a Pin needle crimping manner, and is powered through a plug, and a control and driving circuit and a chip are configured on the stator to realize stator control, and further control the rotation speed, the rotation angle and the output torque of the rotor.
In the embodiment, two containing cavities and valve components are arranged on the same valve body 1, connecting pipelines between the valves are reduced, multiple functional combinations can be realized, and the requirement of automobile CO is met2The air conditioning system has the requirement for adjusting the refrigerant under different working conditions.
The working principle of the embodiment is as follows:
the initial state may be a full flow state (the channel cross-sectional area between the valve core end inclined surface 504 and the flow channel inclined surface 305 of the valve core 5 is larger than the cross-sectional area of the valve core fluid channel 306), under the control of the driving plate 13, the rotor 7 rotates, the valve core 5 moves downwards through the meshing transmission of the fine thread pair, the gap between the valve core end inclined surface 504 and the flow channel inclined surface 305 is gradually reduced, the valve core enters a large flow linear regulation state, the refrigerant flow rate is linearly reduced (used as an electronic expansion valve) through the first transverse channel 103 and the second transverse channel 105 (or the third transverse channel 106), when the small-diameter section 505 of the valve core 5 begins to extend into the valve core fluid channel 306, the valve core fluid channel 306 and the small-diameter section 505 enter a constant flow output under a small flow state, and the flow cross-section at this time is a constant gap area between the valve core fluid channel 306 and the small-diameter section 505; the valve core 5 moves further downward, the slope section 506 of the valve core 5 contacts with the valve core fluid channel 306, and the refrigerant channel is completely closed (used as an electronic shutoff valve). The rotor moves reversely, and the working state is from a cut-off state, a small flow constant output state, a large flow linear regulation state and a full flow state.
The utility model discloses make integrative feed liquor seat with current case seat + feed liquor seat, not only reduced a spare part, improve the assembly effect, the most important is the sealing problem when can avoiding case seat and feed liquor seat to assemble, avoidsHigh pressure refrigerant medium CO2Leakage of (2); in addition, the lower end of the liquid inlet seat 3 and the lower end of the rotor mounting seat 4 are provided with protruding structures, when the liquid inlet seat is axially compressed, the protrusions are embedded into the step surface of the step hole of the valve body to realize hard sealing connection, the outer circumference of the liquid inlet seat is provided with the circular arc protrusion 302, and the circular arc protrusion extrudes the circumference of the inner wall of the accommodating cavity during assembly to realize interference fit hard sealing. The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A solenoid valve with a hard sealing structure comprises a valve body (1) provided with a fluid channel and a containing cavity inside and a valve component arranged in the containing cavity, wherein the fluid channel is communicated with the containing cavity,
the valve assembly comprises a liquid inlet seat (3) arranged at the bottom of the accommodating cavity, a valve core (5) matched with the liquid inlet seat (3) and used for closing or opening the fluid channel, and a driving mechanism for driving the valve core (5) to reciprocate;
the liquid inlet seat (3) is provided with a guide hole (303) allowing the lower end of the valve core (5) to extend into, the middle section of the liquid inlet seat (3) is provided with a plurality of liquid inlet holes (301) arranged along the circumferential direction of the liquid inlet seat (3), and the lower section of the liquid inlet seat (3) is provided with a valve core fluid channel (306) and a flow channel inclined plane (305) which is positioned at the upper part of the valve core fluid channel (306) and used for adjusting the flow rate;
the valve core (5) sequentially comprises a large-diameter section (507), an inclined plane section (506), a small-diameter section (505) and a valve core end inclined plane (504) from top to bottom, the diameter of the small-diameter section (505) is smaller than that of the valve core fluid channel (306), and the diameter of the large-diameter section (507) is larger than that of the valve core fluid channel (306).
2. The electromagnetic valve with the hard sealing structure according to claim 1, characterized in that a lower protrusion (307) is machined at the lower end of the liquid inlet seat (3), and when the lower protrusion (307) is axially pressed, the lower protrusion is embedded into the step surface of the valve body, so that the hard sealing connection is realized;
processing out circular arc arch (302) on the upper portion circumference wall of feed liquor seat (3), during the assembly the inner wall circumference in chamber is held in the extrusion of circular arc arch extrusion, realizes interference fit and fluid medium sealed.
3. The electromagnetic valve with the hard seal structure is characterized in that the driving mechanism comprises a screw rod (6) and a driving element for driving the screw rod (6) to rotate, an axial through hole is formed in the valve core (5), the screw rod (6) is connected with the axial through hole through threads, and the threads convert the rotation of the screw rod (6) into the linear motion of the valve core (5); and a pressure balance channel is arranged on the screw rod (6) and/or the valve core (5), and fluid entering the valve body (1) is filled in the cavity where the upper end surface and the lower end surface of the valve core (5) are located through the pressure balance channel.
4. The solenoid valve with the hard seal structure according to claim 3, wherein the accommodating cavity is a cylindrical cavity with a step structure inside, the driving mechanism further comprises a rotor mounting seat (4) which is fittingly mounted on the step structure, the driving element comprises a rotor (7) which is mounted on the rotor mounting seat (4) and a stator (12) which is sleeved on the periphery of the rotor (7) and drives the rotor to rotate;
the rotor mounting seat (4) is fixed on the valve body (1) through threads, a central stepped through hole (401) for accommodating the valve core (5) is formed in the rotor mounting seat, a guide groove (402) is formed in the central stepped through hole (401), a guide boss (503) is arranged at the upper end of the valve core (5), and the guide boss (503) is connected with the guide groove (402) in a sliding mode;
the end part of the rotor mounting seat (4) is provided with a mounting seat bulge (403), and when the rotor mounting seat is axially compressed, the mounting seat bulge (403) is embedded into the step surface of the valve body (1) to realize hard sealing connection.
5. The electromagnetic valve with the hard sealing structure is characterized in that an axial sealing element receiving cavity (304) with a step hole structure is arranged above the guide hole (303) of the liquid inlet seat (3), a sealing ring (18) in contact connection with the valve core (5), an axial sealing O-shaped ring (19) sleeved outside the sealing ring (18) and a transition plate (20) arranged at the upper parts of the sealing ring (18) and the axial sealing O-shaped ring (19) are arranged in the axial sealing element receiving cavity (304); the rotor mounting seat (4) presses the axial sealing O-shaped ring (19) through the transition plate (20).
6. A solenoid valve with a hard seal structure according to claim 5, characterized in that a stator housing (23) is provided outside the stator (12), the stator housing (23) is fixedly connected to the upper end face of the valve body (1); the outer side wall of the rotor mounting seat (4) is provided with a notch for placing an upper sealing ring (22), and the rotor mounting seat (4) and the stator shell (23) are subjected to dustproof sealing through the upper sealing ring (22).
7. The electromagnetic valve with the hard sealing structure is characterized in that a platform surface is machined on a threaded cylindrical surface of the screw rod (6), and the platform surface and the axial through hole of the valve core (5) form the pressure balancing channel.
8. A solenoid valve with a hard seal structure according to claim 4, characterized in that the accommodating cavity forms a seal housing (11) of a seal space, the seal housing (11) is covered outside the rotor (7), and the lower end is fixedly connected with the rotor mounting seat (4) in a seal mode through a spigot;
the rotor (7) is installed inside the sealing shell (11) in a limiting mode through an upper bearing (9) and a lower bearing (8), the lower bearing (8) is installed on a step of a central step-shaped through hole (401) of the rotor installation seat (4), the upper bearing (9) is installed in a bearing seat (10), the circumference of the bearing seat (10) is installed on the inner wall of the sealing shell (11) in a matched mode, and the upper end of the bearing seat (10) abuts against the inner surface of the sealing shell (11).
9. A solenoid valve with a hard seal structure according to claim 1, characterized in that a plurality of receiving cavities are provided in the same valve body (1), and a valve assembly is installed in each receiving cavity.
10. The solenoid valve with the hard seal structure according to claim 1 is characterized in that a pressure relief passage communicated with the fluid passage is provided on the valve body (1), and a pressure relief valve (14) is installed at a port of the pressure relief passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022876098.0U CN213841418U (en) | 2020-12-04 | 2020-12-04 | Solenoid valve with hard seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022876098.0U CN213841418U (en) | 2020-12-04 | 2020-12-04 | Solenoid valve with hard seal structure |
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| Publication Number | Publication Date |
|---|---|
| CN213841418U true CN213841418U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022876098.0U Active CN213841418U (en) | 2020-12-04 | 2020-12-04 | Solenoid valve with hard seal structure |
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| CN (1) | CN213841418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361671A (en) * | 2020-12-04 | 2021-02-12 | 上海克来机电自动化工程股份有限公司 | Solenoid valve with hard seal structure |
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2020
- 2020-12-04 CN CN202022876098.0U patent/CN213841418U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361671A (en) * | 2020-12-04 | 2021-02-12 | 上海克来机电自动化工程股份有限公司 | Solenoid valve with hard seal structure |
| WO2022116550A1 (en) * | 2020-12-04 | 2022-06-09 | 上海克来机电自动化工程股份有限公司 | Electromagnetic valve having hard sealing structure |
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