CN212480144U

CN212480144U - Electromagnetic valve with throttling function

Info

Publication number: CN212480144U
Application number: CN202021677946.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Yida Auto Parts Co ltd
Current assignee: Zhejiang Yida Auto Parts Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-02-05
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses an electromagnetic valve with throttling function, which comprises a valve body and a valve core component assembled in the valve body, wherein a valve seat component is arranged above the valve core component, and an electromagnetic coil component is arranged above the valve seat component; an inlet hole is formed in one side of the valve body, an outlet hole is formed in the other side of the valve body, a valve body main cavity is arranged between the inlet hole and the outlet hole, and the valve body main cavity is connected with the outlet hole through a channel; the main valve port is arranged at the joint of the main cavity of the valve body and the channel; a damping hole is arranged in the main cavity of the valve body and is communicated with the main cavity of the valve body and the channel; the valve core assembly comprises a valve core, a main cavity of the valve body and the lower half section of the valve core are assembled to form an accommodating cavity, and when the bottom of the valve core props against the main valve port and the main valve port is closed, the damping hole is communicated with the accommodating cavity and the channel; the throttle electromagnetic valve has the characteristics of throttling and pressure reduction.

Description

Electromagnetic valve with throttling function

Technical Field

The utility model relates to a solenoid valve field, in particular to solenoid valve with throttle function.

Background

In an automobile air conditioning system, the function of mutual switching between circulation and throttling is realized by adopting a scheme that an electromagnetic valve and a throttling short pipe are connected in parallel for use; in this embodiment, the flow direction of the fluid or the open/close state of the flow path is controlled by controlling the open/close state of the electromagnetic valve; controlling the pressure drop in the system by means of a throttle pipe; the defects of multiple parts, complex structure, heavy weight, high cost and the like are inevitably caused, and the requirements of the current trends of light weight, cost reduction and the like of the automobile are violated.

In view of the above problems, the present invention provides a solenoid valve with a throttling function, and the present application is developed accordingly.

Disclosure of Invention

The utility model provides a solenoid valve with throttling function, which has the characteristics of throttling and pressure reduction; specifically, the utility model discloses a realize through following technical scheme:

a solenoid valve with a throttling function comprises a valve body and a valve core assembly assembled in the valve body, wherein a valve seat assembly is installed above the valve core assembly, and an electromagnetic coil assembly is installed above the valve seat assembly; an inlet hole is formed in one side of the valve body, an outlet hole is formed in the other side of the valve body, a valve body main cavity is arranged between the inlet hole and the outlet hole, and the valve body main cavity is connected with the outlet hole through a channel; the main valve port is arranged at the joint of the main cavity of the valve body and the channel; a damping hole is arranged in the main cavity of the valve body and is communicated with the main cavity of the valve body and the channel; the valve core assembly comprises a valve core, a main cavity of the valve body and the lower half section of the valve core are assembled to form an accommodating cavity, and when the bottom of the valve core props against the main valve port and the main valve port is closed, the damping hole is communicated with the accommodating cavity and the channel.

Furthermore, one end of the channel is connected to the bottom of the main cavity of the valve body, and the other end of the channel is connected to the outlet hole.

Furthermore, a small through hole for connecting the damping hole and the channel is arranged between the damping hole and the channel, namely one end of the small through hole is connected with the damping hole, and the other end of the small through hole is connected with the channel.

Furthermore, a counter bore is arranged in the main cavity of the valve body and is connected with the accommodating cavity and the channel; the counter bore is equipped with a slender pipe, and the inner hole channel of the slender pipe is a damping hole.

Further, the counter bore comprises an upper bore section and a lower bore section; wherein, the diameter of the upper hole section is larger than that of the lower hole section, and the joint of the two hole sections is a placing table-board; the lower portion of the lower bore section is connected to the channel.

Furthermore, a positioning ring is arranged in the upper hole section, and the bottom of the positioning ring is in contact with the placing table top; the positioning ring is internally provided with a small hole, a slender pipe is sleeved in the small hole, and the slender pipe is communicated with the lower hole section.

Furthermore, the elongated tube is made of a metal material, and the positioning ring is made of metal, plastic or rubber; the slender pipe is fixedly connected with the positioning ring in a welding or injection molding mode.

Further, the positioning ring sequentially comprises a preassembly section, a guide section and an assembly section from bottom to top; the diameter of the lower hole section is less than that of the preassembly section and less than that of the upper hole section and less than that of the assembly section; the assembling section of the positioning ring is in interference fit with the upper hole section of the counter bore.

Furthermore, a counter bore channel for connecting the main cavity of the valve body and the inlet hole is arranged between the main cavity of the valve body and the inlet hole, a filter screen is arranged in the counter bore channel, and the mesh number of the filter screen is more than or equal to 100 meshes.

The beneficial effect of this application lies in:

the utility model discloses a solenoid valve with throttle function, when the valve is closed, realize the throttle decompression by self structure; when the electromagnetic valve is in a closed state, namely the valve core is abutted against the opening of the main valve, a medium enters from an inlet hole of the valve body, enters into the accommodating cavity of the main cavity of the valve body through the counter bore channel, enters into the channel through the channel in the long and thin pipe assembled at the upper hole section of the counter bore, enters into the channel through the small through hole and flows to the outlet hole, so that the throttling function of the outlet hole is realized.

And the medium inlet of the electromagnetic valve is provided with a filter screen, so that redundant impurities in an air-conditioning system can be filtered, the throttling electromagnetic valve is prevented from being blocked and losing effectiveness, and the performance of a product is improved.

Drawings

Fig. 1 is an assembly schematic diagram of an embodiment of a solenoid valve with a throttling function provided by the present invention;

fig. 2 is a schematic view of a valve body provided by the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of another valve body provided by the present invention;

fig. 5 is a schematic view of another valve body provided by the present invention;

FIG. 6 is an assembly view of the solenoid valve of the present invention assembled using the valve body of FIG. 5;

fig. 7 is a schematic view illustrating an assembly of a fixing ring and a slender tube according to the present invention;

fig. 8 is a schematic view of a filter screen provided by the present invention;

fig. 9 is a schematic view of a valve cartridge provided in the present invention;

fig. 10 is a schematic view of a valve seat provided by the present invention;

fig. 11 is a sectional view taken along line a-a of fig. 10.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1, the solenoid valve with a throttling function comprises a valve body 1, a valve core assembly 2 installed in the valve body 1, a valve seat assembly 4 installed on the valve core assembly 2, and a solenoid coil assembly 5 installed on the valve seat assembly 4, wherein the solenoid coil assembly 5 controls the opening and closing of a pilot hole 411 in the valve seat assembly 4.

As shown in fig. 2, an inlet hole 101 is provided on one horizontal side of the valve body 1, an outlet hole 102 is provided on the other horizontal side, a valve body main cavity 103 is provided between the two ends, the valve body main cavity 103 is connected with the inlet hole 101 by a counter bore channel 104, a channel 105 is provided between the valve body main cavity 103 and the outlet hole 102, the channel 105 is a curved channel, one end of the curved channel is connected to the bottom of the valve body main cavity 103, and the other end is connected to the outlet hole 102. The opening of the connecting part of the valve body main cavity 103 and the channel 105 is a main valve port 106, and the position of the main valve port 106 is higher than the bottom surface of the valve body main cavity 103; the upper portion of valve body main cavity 103 of valve body 1 is connected with an installation cavity 107, and the installation cavity top is connected with a sealed chamber 108, and the junction of installation cavity 107 and valve body main cavity 103 is a plane 109, and plane 109 department is vertical to be equipped with a passageway 110, passageway 110's intercommunication installation cavity 107 and passageway 105.

After the valve body 1 and the valve core assembly 2 are assembled, the main valve body cavity 103 and the lower half section of the valve core 21 form an accommodating cavity 1-1.

A damping hole 111 is arranged in the valve body 1, the damping hole 111 communicates the valve body main cavity 103 with the channel 105, and specifically, the damping hole 111 communicates the accommodating cavity 1-1 with the channel 105.

Since the damping holes 111 are arranged at different positions in the main cavity 103 of the valve body, and the channel 105 is a bent channel, some damping holes 111 cannot be connected to the channel 105, in order to solve the above problem, a small through hole 112 for connecting the damping holes 111 and the channel 105 is arranged between the damping holes 111 and the channel 105, that is, one end of the small through hole 112 is connected to the damping hole 111, and the other end is connected to the channel 105, as shown in fig. 4.

The media circulation process is as follows: the medium enters from an inlet hole 101 of the valve body 1, enters an accommodating cavity 1-1 formed by a valve body main cavity 103 and the lower half section of the valve core 21 through a counter bore channel 104, then passes through a damping hole 111 of the valve body 1, is provided with a small through hole 112, then enters a channel 105 through the small through hole 112, and then flows to an outlet hole 102, so that the throttling function of the outlet hole 102 is realized.

Since the diameter of the orifice 111 is small and the orifice 111 is located inside the valve body 1, the difficulty of processing is high in actual production, and the following solutions are proposed for the above problems.

As shown in fig. 5, in order to reduce the processing difficulty of the damping hole 111, a counter bore 113 with a diameter larger than that of the damping hole is arranged at the position where the damping hole 111 is originally arranged, and the counter bore is divided into two sections from top to bottom, namely an upper hole section 1131 and a lower hole section 1132; wherein, the diameter d1131 of the upper hole section 1131 is larger than the diameter d1132 of the lower hole section 1132, so that the joint of the two hole sections is a placing table. The lower portion of the lower bore section 1132 is connected to the channel 105 either directly or indirectly through a small through-hole 112 to the channel 105.

As shown in fig. 6 and 7, the positioning ring 115 is installed in the upper hole section 1131, and the bottom of the positioning ring 115 contacts with the placing table; a small hole is arranged inside the positioning ring 115, an elongated tube 114 is sleeved in the small hole, the elongated tube 114 is fixedly connected with the positioning ring 115, and the elongated tube 114 leads to the lower hole section 1132; the passage formed inside the elongated tube 114 is the damping hole 111.

The material of the slender tube 114 can be selected from metal materials such as brass, red copper, stainless steel and the like, and the material of the positioning ring 115 can be selected from stainless steel, plastic, rubber and the like; the elongated tube 114 and the positioning ring 115 can be fixedly connected by welding, injection molding and the like,

the positioning ring 115 is fixed to the counterbore 113 in an interference fit manner, and the specific connection structure is as follows:

the positioning ring 115 is composed of a plurality of segments, which are a pre-assembly segment 1151, a guide segment 1152 and an assembly segment 1153 from bottom to top; wherein the diameter d1151 of the pre-assembled segment 1151 of the positioning ring 115 is less than the diameter d1131 of the upper hole segment 1131 of the counterbore 113, the diameter d1151 of the pre-assembled segment 1151 of the positioning ring 115 is greater than the diameter d1132 of the lower hole segment 1132 of the counterbore 113, the diameter d1153 of the assembled segment 1153 of the positioning ring 115 is greater than the diameter d1131 of the upper hole segment 1131 of the counterbore 113, i.e., d1132 < d1151 < d1131 < d 1153; the leading section 1152 of the retaining ring 115 is beveled to facilitate interference pressing of the mounting section 1153 of the retaining ring 115 into the upper bore section 1131 of the counterbore 113 during assembly.

When the throttling valve is used, a medium enters from the inlet hole 101 of the valve body 1, enters the accommodating cavity 1-1 formed by the main cavity 103 of the valve body and the lower half section of the valve core 21 through the counter bore channel 104, enters the channel 105 through the small through hole 112 through the channel in the elongated tube 114 assembled in the upper hole section 1131 of the counter bore 113, and then flows to the outlet hole 102, so that the throttling function of the outlet hole 102 is realized.

As shown in figures 1 and 8, in order to avoid the blockage of the damping hole 111, a filter screen 6 is installed on the counter bore channel 104 of the valve body 1, the mesh number of the filter screen 6 is larger than or equal to 100 meshes, namely the filter hole is smaller than or equal to 0.15mm, particle impurities with the diameter of more than 0.15mm can be effectively blocked, and the failure of the electromagnetic valve is prevented.

As shown in FIG. 3, the counterbore passage 104 of the valve body 1 includes a through bore 104-3, a counterbore 104-2 and a chamfer 104-1; wherein the inclined plane 104-1 is connected with the inlet hole 101, the counter bore 104-2 is connected with the inclined plane 104-1, and the through hole 104-3 is connected with the counter bore 104-2; the diameter D1 of the inlet hole 101 is larger than the diameter D2 of the counter bore 104-2, the diameter D2 of the counter bore 104-2 is larger than the diameter D3 of the through hole 104-3,

as shown in fig. 8, the filter screen 6 includes a filter screen 62 and a fixing ring 61 for fixing; the fixed ring 61 is buckled on the peripheral edge of the filter screen 62; the maximum outer diameter D61 of the fixing ring 61 is more than or equal to the diameter D2 of the counter bore 104-2 of the valve body 1, the maximum outer diameter D62 of the filter screen 62 of the filter screen 6 is more than the diameter D3 of the through hole 104-3 of the valve body 1, and the length L1 of the fixing ring 61 of the filter screen 6 is more than or equal to the depth L2 of the counter bore 104-2 of the valve body 1.

The mounting mode of the filter screen 6 and the valve body 1 is as follows:

the filter screen 6 is placed on the inclined surface 104-1 of the counterbore channel 104 of the valve body 1, and the filter screen 6 is pressed into the counterbore 104-2 of the counterbore channel 104 of the valve body 1 in an interference manner through press fitting so as to be fixed.

The filter screen 6 is arranged in a counter bore 104-2 of a counter bore channel 104 of the valve body 1, and one or more points are punched on an inclined surface 104-1 of the counter bore channel 104 of the valve body 1, so that the inclined surface 104-1 of the valve body 1 is locally deformed and the filter screen 6 is reversely buckled.

The shape of the filter screen 6 also comprises a long cylinder shape, and the shape can increase the filtering area to the maximum extent, increase the accumulation amount of impurities and prolong the service life of the filter screen 6.

As shown in fig. 9, the valve core assembly 2 is installed in the main valve body 103 of the valve body, and the lower end of the valve core assembly 2 is used for matching with the sealing channel 105; after the electromagnetic valve is assembled, a main cavity 103 of the valve body and a containing cavity 1-1 formed by the lower half section of the valve core 21; the valve core 21 of the valve core component 2 is dumbbell-shaped, and the middle of the valve core 21 is horizontally provided with a flow hole 211 which penetrates through two sides of the valve core 21; an upper damping hole 212 is vertically formed at the upper portion of the valve body 21, and the upper damping hole 212 is communicated with the flow hole 211.

As shown in fig. 10 and 11, the valve seat assembly 4 is mounted above the valve core assembly 2 and is assembled in the sealing cavity 108, the mounting cavity 107 and the valve body main cavity 103 of the valve body 1; a valve core spring 3 is arranged between the valve core component 2 and the valve seat component 4; after assembly, the valve core 21, the valve body main cavity 103 and the valve seat 41 form a back pressure cavity 1-2; the valve seat 41 is assembled in the valve body 1, and the electromagnetic coil assembly 5 is also assembled above the valve seat 41, and the lower end of the iron core assembly 55 in the electromagnetic coil assembly 5 is used for being matched with a valve seat pilot hole 411 on the valve seat 41 in the sealing valve seat assembly 4; the solenoid assembly 5 is assembled with the valve seat 41 such that the central location forms a pilot chamber 1-3.

A through flow hole 412 is horizontally formed in the middle of the valve seat 41, and a pilot hole 411 is vertically formed, and the pilot hole 411 is communicated with the through flow hole 412. Two channels 410 are vertically arranged in the middle of the valve seat and are communicated with the upper end and the lower end of the valve seat 41, and in the assembled electromagnetic valve, the channels 410 are communicated with the back pressure cavity 1-2 and the guide cavity 1-3.

Above is the utility model discloses preferred embodiment the utility model discloses make a plurality of other simple replacements and changes under the design prerequisite, all should regard as belonging to the utility model discloses a protection category.

Claims

1. The utility model provides a solenoid valve with throttle function which characterized in that: the electromagnetic valve comprises a valve body and a valve core assembly assembled in the valve body, wherein a valve seat assembly is arranged above the valve core assembly, and an electromagnetic coil assembly is arranged above the valve seat assembly; an inlet hole is formed in one side of the valve body, an outlet hole is formed in the other side of the valve body, a valve body main cavity is arranged between the inlet hole and the outlet hole, and the valve body main cavity is connected with the outlet hole through a channel; the main valve port is arranged at the joint of the main cavity of the valve body and the channel; a damping hole is arranged in the main cavity of the valve body and is communicated with the main cavity of the valve body and the channel; the valve core assembly comprises a valve core, a main cavity of the valve body and the lower half section of the valve core are assembled to form an accommodating cavity, and when the bottom of the valve core props against the main valve port and the main valve port is closed, the damping hole is communicated with the accommodating cavity and the channel.

2. The electromagnetic valve with a throttling function according to claim 1, characterized in that: one end of the channel is connected to the bottom of the main cavity of the valve body, and the other end of the channel is connected to the outlet hole.

3. The electromagnetic valve with a throttling function according to claim 1, characterized in that: and a small through hole for connecting the damping hole and the channel is arranged between the damping hole and the channel.

4. A solenoid valve with a throttle function according to claim 1 or 3, characterized in that: a counter bore is arranged in the main cavity of the valve body and is connected with the accommodating cavity and the channel; an elongated tube is arranged in the counter bore, and an internal hole channel of the elongated tube is a damping hole.

5. The electromagnetic valve with a throttling function according to claim 4, characterized in that: the counter bore comprises an upper bore section and a lower bore section; the diameter of the upper hole section is larger than that of the lower hole section, and the joint of the two hole sections is a placing table top; the lower bore section is connected to the channel.

6. The electromagnetic valve with a throttling function according to claim 5, characterized in that: a positioning ring is arranged in the upper hole section, and the bottom of the positioning ring is in contact with the placing table top; the positioning ring is internally provided with a small hole, and the slender pipe is sleeved in the small hole.

7. The electromagnetic valve with a throttling function according to claim 6, characterized in that: the material of the slender pipe is selected from a metal material, and the material of the positioning ring is selected from metal, plastic or rubber; the slender pipe is fixedly connected with the positioning ring in a welding or injection molding mode.

8. The electromagnetic valve with a throttling function according to claim 6, characterized in that: the positioning ring sequentially comprises a preassembly section, a guide section and an assembly section from bottom to top; the diameter of the lower hole section is less than that of the preassembly section and less than that of the upper hole section and less than that of the assembly section; the assembling section of the positioning ring is in interference fit with the upper hole section of the counter bore.

9. The electromagnetic valve with a throttling function according to claim 1, characterized in that: a counter bore channel for connecting the valve body main cavity and the inlet hole is arranged between the valve body main cavity and the inlet hole, a filter screen is arranged in the counter bore channel, and the mesh number of the filter screen is more than or equal to 100 meshes.