CN212056055U

CN212056055U - Electromagnetic valve assembly

Info

Publication number: CN212056055U
Application number: CN202020372483.9U
Authority: CN
Inventors: 张宏; 龙汉钊; 胡云
Original assignee: Better Carry Electrics Shenzhen Co ltd
Current assignee: Bedkelly electric (Suzhou) Co.,Ltd.
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-12-01
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a solenoid valve assembly, include: the electromagnetic valve comprises an electromagnetic valve body, a diaphragm structure, a bent pipe structure and a connecting sleeve, wherein an accommodating cavity is formed in the bottom of the diaphragm structure, and the top of the electromagnetic valve body is connected in the accommodating cavity in a nested manner; the elbow structure is provided with a hollowed connecting part, the connecting sleeve is arranged on the electromagnetic valve body and attached to the inner wall of the connecting part, and the bottom of the elbow structure is abutted against the shell of the electromagnetic valve body; a gap is arranged between the top of the connecting sleeve and the top surface of the connecting part, and the edge of the diaphragm structure is fixed in the gap. The utility model discloses a solenoid valve subassembly will through a connecting sleeve the solenoid valve body with the diaphragm structure encapsulation is fixed in the connecting portion of return bend structure, sealed effectual, the coolant liquid is kept apart on the solenoid valve body, and can not flow to on the solenoid valve body, simple structure, and effectively guaranteed sealed effect.

Description

Electromagnetic valve assembly

Technical Field

The utility model relates to a solenoid valve technical field especially relates to a solenoid valve assembly.

Background

The electromagnetic valve is an actuating element controlled by electromagnetism, and in an SCR (selective Catalytic reduction) aftertreatment system, the on-off of cooling liquid is mainly controlled by the cooling liquid electromagnetic valve, so that the heating of a urea box of the SCR aftertreatment system is realized. The existing cooling liquid electromagnetic valve adopts the design that the cooling liquid flows through the movable valve core and the inner part of the sleeve, the inner structure of the valve core is complex, the processing cost is high, and the inner parts of the valve core and the sleeve are in long-term contact with the cooling liquid, so that the valve core and the sleeve are easily blocked or corroded by impurities in the cooling liquid, and the service life of the electromagnetic valve is influenced. For the design of keeping apart coolant liquid and solenoid valve, connection structure between coolant liquid pipeline and the solenoid valve is especially important, if connect not in place, coolant liquid still can drip to the solenoid valve in, cause the damage to the solenoid valve, and increased the pressure loss of coolant liquid.

SUMMERY OF THE UTILITY MODEL

Problem to prior art exists, the utility model provides a solenoid valve subassembly, it is through setting up diaphragm structure, elbow structure to through a connecting sleeve with the solenoid valve body the diaphragm structure with elbow structure is connected, and is sealed effectual, makes solenoid valve switching in-process coolant liquid not flow through inside the case, and can not the water clock to the solenoid valve, has improved the life of solenoid valve on the one hand, and on the other hand has reduced the loss of pressure of coolant liquid.

The technical scheme of the utility model as follows: the utility model provides a solenoid valve assembly, include: the electromagnetic valve comprises an electromagnetic valve body, a diaphragm structure, a bent pipe structure and a connecting sleeve, wherein an accommodating cavity is formed in the bottom of the diaphragm structure, and the top of the electromagnetic valve body is connected in the accommodating cavity in a nested manner; the elbow structure is provided with a hollowed connecting part, the connecting sleeve is arranged on the electromagnetic valve body and attached to the inner wall of the connecting part, and the bottom of the elbow structure is abutted against the shell of the electromagnetic valve body; a gap is arranged between the top of the connecting sleeve and the top surface of the connecting part, and the edge of the diaphragm structure is fixed in the gap.

Further, a first sealing ring is arranged between the outer surface of the connecting sleeve and the elbow structure, and the first sealing ring is arranged in a groove formed in the outer surface of the connecting sleeve.

Further, the diaphragm structure includes: the central sealing body is mounted on the head of the movable valve core body, the second sealing ring is formed at the edge of the diaphragm structure, and the second sealing ring is fixed in the gap.

Further, the first sealing ring, the second sealing ring and the diaphragm are all made of flexible materials.

Further, the cross section of the accommodating cavity is T-shaped.

Furthermore, the electromagnetic valve body comprises a movable valve core, the head of the movable valve core is a connecting block, the cross section of the connecting block is T-shaped, and the connecting block is adapted and nested in the accommodating cavity.

Furthermore, the electromagnetic valve body further comprises an elastic part and a fixed valve core, wherein the elastic part is arranged at the tail part of the movable valve core and is arranged between the movable valve core and the fixed valve core.

Furthermore, an installation cavity is arranged in the movable valve core, the elastic element is arranged in the installation cavity, the lower end of the elastic element is abutted against the fixed valve core through a positioning column, and the elastic element is a spring.

Furthermore, one end of the elastic element is sleeved at the step at the lower part of the movable valve core, and the elastic element is a spring.

According to the above technical scheme, the utility model provides a solenoid valve subassembly will through a connecting sleeve solenoid valve body one end with the diaphragm structure encapsulation is fixed in the connecting portion of elbow structure, sealed effectual combines the diaphragm structure, and the coolant liquid is kept apart on the solenoid valve body, and can not flow extremely on the solenoid valve body, simple structure, and effectively guaranteed sealed effect, do benefit to the life of extension solenoid valve.

Drawings

Fig. 1 is a schematic cross-sectional view of a solenoid valve assembly according to embodiment 1 of the present invention.

Fig. 2 is a schematic cross-sectional view of a solenoid valve assembly according to embodiment 2 of the present invention.

Fig. 3 is an external schematic view of the connection between the diaphragm structure and the movable valve element of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, the present embodiment is a solenoid valve assembly, including: the method comprises the following steps: the electromagnetic valve comprises an electromagnetic valve body 1, a diaphragm structure 2, a bent pipe structure 3 and a connecting sleeve 4, wherein the bottom of the diaphragm structure 2 is provided with a containing cavity (not marked), and the top of the electromagnetic valve body 1 is connected with the containing cavity in a nested manner. Elbow structure 3 is equipped with a hollow connecting portion, adapter sleeve 4 install in on the solenoid valve body 1 to attached install in the inner wall of connecting portion, elbow structure 3's bottom with solenoid valve body 1's shell is inconsistent. Specifically, the connecting sleeve 4 is an annular sleeve, the outer wall of the connecting sleeve is attached to the inner wall of the connecting portion, a gap is formed between the top of the connecting sleeve 4 and the top surface of the connecting portion, and the edge of the diaphragm structure 2 is fixed in the gap, so that the diaphragm structure 2 is fixed in the connecting portion.

In particular, the diaphragm structure 2 comprises a second sealing ring 21 formed on the edge, the second sealing ring 21 being fixed in the interspace. The diaphragm structure 2 further comprises: a center seal body 22 and a diaphragm 23 connecting the center seal body 22 and the second seal ring 21, wherein the center seal body 22 is mounted on a head portion of the movable valve body. The diaphragm structure 2 is a bowl-shaped structure, and the cross section of the diaphragm is arc-shaped. In addition, the second sealing ring 21 seals the joint of the elbow structure 3 and the connecting sleeve 4, and prevents the coolant from leaking through the gap. The top of the connecting sleeve 4 is provided with a step 41 downwards, and the diaphragm 23 is accommodated in the step 41.

In addition, the surface of connecting sleeve 4 with be equipped with a first sealing ring 5 between the bent pipe structure 3, first sealing ring 5 locate form in the recess on the surface of connecting sleeve 4, first sealing ring 5 plays the double sealing effect, makes connecting sleeve 4 with bent pipe structure 3 is connected inseparabler, and can prevent that the coolant liquid from permeating the gap flow direction solenoid valve body 1. Preferably, the second sealing ring 21, the first sealing ring 5 and the diaphragm 23 are made of flexible materials, such as flexible rubber or plastic materials in this embodiment.

Specifically, the cross section of the accommodating cavity is T-shaped; the electromagnetic valve body 1 comprises a movable valve core 11, a connecting block 12 is arranged at the top of the movable valve core 11, the cross section of the connecting block 12 is T-shaped, the connecting block 12 is matched and tightly nested in the accommodating cavity, and the diaphragm structure 2 is not easy to separate from each other when moving synchronously along with the movable valve core 11 due to the T-shaped design. The utility model discloses in the holding chamber with other shapes that connecting block cross section also can be for doing benefit to nested connection, like "T" type that has outstanding trapezium structure etc..

Furthermore, the electromagnetic valve body further comprises an elastic part 14 and a fixed valve core 13, the elastic part 14 is arranged between the movable valve core 11 and the fixed valve core 13, an installation cavity is arranged in the movable valve core 11, the elastic part 14 is arranged in the installation cavity, the lower end of the elastic part is abutted against the fixed valve core 13 through a positioning column, the elastic part 14 is a spring, and the positioning column protrudes out of the bottom surface of the movable valve core 11 in the natural state of the spring. The positioning column comprises a handle and an end part connected to one end of the handle, the diameter of the handle is smaller than that of the end part, the diameter of the end part is the same as that of the installation cavity, and the spring is sleeved on the handle.

The working principle of the electromagnetic valve assembly of the embodiment is as follows: when the electromagnetic coil is powered on, the fixed valve core 13 generates magnetic force, the movable valve core 11 descends under the attraction of the magnetic force generated by the induction coil and abuts against the fixed valve core 13, the movable valve core 11 extrudes the spring to drive the diaphragm structure 2 to move downwards, so that the top of the central sealing body 22 of the diaphragm structure 2 is separated from the inlet of the elbow 31 of the elbow structure 3, and cooling liquid flows in from the inlet of the elbow 31 and flows to the outlet 33 of the elbow structure 3 along the elbow 31. When the electromagnetic coil is powered off, the magnetic force of the fixed valve core 13 disappears, the movable valve core 11 returns to the original position under the elastic force action of the spring, and meanwhile, the top of the central sealing body 22 of the diaphragm structure 2 is pressed to the inlet of the bent pipe 31 again, so that cold liquid can not flow into the bent pipe 31 any more, and the purpose of sealing the bent pipe 31 is achieved.

Example 2

As shown in fig. 2, the present embodiment is different from embodiment 1 in that the elastic member 14 ' is a spring, the outer diameter of the lower portion of the movable valve core 11 ' is smaller than the outer diameter of the upper portion of the movable valve core 11 ' to form a downward step, and the lower portion of the movable valve core 11 ' is sleeved in the elastic member 14 '. The elastic member 14' has similar technical effects to the elastic member 14 of embodiment 1.

The working principle of the solenoid valve assembly of this embodiment is the same as that of embodiment 1, and details are not described here.

To sum up, the utility model discloses a set up connecting portion among the bent pipe structure, and will through a connecting sleeve the solenoid valve body the diaphragm structure with bent pipe structure is connected, makes the solenoid valve follow at switching in-process coolant liquid flows above the diaphragm structure to inside not passing through the solenoid valve body. And the junction of this solenoid valve subassembly is equipped with two sealing rings and carries out double-deck sealed, prevents that the coolant liquid from following the elbow structure with the gap water clock between the adapter sleeve, sealed effectual, effectively guaranteed solenoid valve subassembly's operation, and simple structure is worth wideling popularize and use.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A solenoid valve assembly, comprising: the electromagnetic valve comprises an electromagnetic valve body, a diaphragm structure, a bent pipe structure and a connecting sleeve, wherein an accommodating cavity is formed in the bottom of the diaphragm structure, and the top of the electromagnetic valve body is connected in the accommodating cavity in a nested manner; the elbow structure is provided with a hollowed connecting part, the connecting sleeve is arranged on the electromagnetic valve body and attached to the inner wall of the connecting part, and the bottom of the elbow structure is abutted against the shell of the electromagnetic valve body; a gap is arranged between the top of the connecting sleeve and the top surface of the connecting part, and the edge of the diaphragm structure is fixed in the gap.

2. The solenoid valve assembly of claim 1 wherein a first sealing ring is disposed between the outer surface of the adapter sleeve and the elbow structure, the first sealing ring being disposed in a groove formed in the outer surface of the adapter sleeve.

3. The solenoid valve assembly of claim 2, wherein the diaphragm structure comprises: the central sealing body is mounted on the head of the electromagnetic valve body, the second sealing ring is formed at the edge of the diaphragm structure, and the second sealing ring is fixed in the gap.

4. The solenoid valve assembly of claim 3, wherein said first sealing ring, said second sealing ring, and said diaphragm are all flexible.

5. The solenoid valve assembly of claim 1 wherein said receiving chamber is "T" shaped in cross section.

6. The solenoid valve assembly of claim 5, wherein the solenoid valve body includes a movable valve core, the head of the movable valve core is a connecting block, the cross section of the connecting block is "T" shaped, and the connecting block is adapted and nested in the accommodating cavity.

7. The solenoid valve assembly of claim 6, wherein the solenoid valve body further comprises an elastic member and a stationary valve element, wherein the elastic member is mounted at the tail of the movable valve element and is disposed between the movable valve element and the stationary valve element.

8. The solenoid valve assembly of claim 7, wherein the movable spool has a mounting cavity therein, the resilient member is disposed in the mounting cavity, and the lower end of the resilient member abuts against the stationary spool through a positioning post, and the resilient member is a spring.

9. The solenoid valve assembly of claim 7, wherein said resilient member is disposed at one end of said movable spool at a step of a lower portion of said movable spool, and said resilient member is a spring.