CN114076212A

CN114076212A - Valve element assembly and reversing valve with same

Info

Publication number: CN114076212A
Application number: CN202010844928.3A
Authority: CN
Inventors: 张飞; 杜飞龙; 朱佳峰; 王环; 赖周年
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2022-02-22

Abstract

The invention provides a valve core assembly and a reversing valve with the same, wherein the valve core assembly comprises: a guide frame; the guide frame is in driving connection with the sliding block, a cavity is formed in one side of the sliding block, and a plugging portion is arranged on the other side of the sliding block and used for plugging the inlet channel. Through the technical scheme that this application provided, the problem that the switching-over failure easily appears in the switching-over valve among the prior art can be solved.

Description

Valve element assembly and reversing valve with same

Technical Field

The invention relates to the technical field of reversing valves, in particular to a valve core assembly and a reversing valve with the same.

Background

As shown in fig. 1, the conventional four-way valve structure mainly includes a valve cavity, and an inlet pipe 2, a first outlet pipe 3, and a second outlet pipe 4 communicated with the valve cavity, wherein a slider 1 is movably disposed in the valve cavity, and the valve cavity can be communicated with the first outlet pipe 3 or the second outlet pipe 4 by moving the slider 1. In the switching-over in-process, when slider 1 removed to the intermediate position, first outlet pipeline 3, second outlet pipeline 4 and low-pressure pipeline communicate each other, lead to the pressure release in the valve pocket very fast, and the capillary that communicates with inlet pipeline 2 supplies to press inadequately for the thrust of the piston baffle left and right sides descends, can appear slider 1 when serious and stop the condition that can't continue to remove in the middle, leads to cross valve work inefficacy.

Disclosure of Invention

The invention provides a valve core assembly and a reversing valve with the same, and aims to solve the problem that the reversing valve in the prior art is prone to reversing failure.

According to one aspect of the present invention there is provided a valve core assembly comprising: a guide frame; the guide frame is in driving connection with the sliding block, a cavity is formed in one side of the sliding block, and a plugging portion is arranged on the other side of the sliding block and used for plugging the inlet channel.

Further, the surface of the blocking part close to the inlet channel is of an arc-shaped structure.

Further, the surface of the blocking part close to the inlet channel is of a plane structure.

Furthermore, the blocking part and the sliding block are of an integrally formed structure.

Furthermore, the plugging portion is provided with a top surface and a bottom surface which are oppositely arranged, the top surface of the plugging portion is used for plugging the inlet channel, the bottom surface is an arc-shaped surface, the bottom surface is matched with the upper surface of the sliding block, and the bottom surface of the plugging portion is connected with the sliding block.

Furthermore, the guide frame is provided with an avoiding hole, and the sliding block is arranged in the avoiding hole in a penetrating mode.

Further, the slider includes main part and bottom plate, and the main part has the cavity, and the shutoff portion sets up at the top of main part, and the bottom plate ring shape sets up in the bottom of main part, and the bottom plate is located one side of leading truck with dodging the hole cooperation in order to restrict the relative position of slider and leading truck, bottom plate, and the shutoff position is located the opposite side of leading truck.

According to another aspect of the present invention, there is provided a direction valve comprising: the valve body is provided with an inlet channel, a plurality of outlet channels and a cavity, and the inlet channel and the outlet channels are communicated with the cavity; the valve core assembly is the valve core assembly provided by the above, the valve core assembly is movably arranged in the cavity, one side of the sliding block of the valve core assembly, which is provided with the cavity, is arranged towards the outlet channels, one side of the sliding block, which is provided with the plugging portion, is arranged towards the inlet channel, and the plugging portion is provided with a plugging position for plugging the inlet channel and a conduction position for conducting the inlet channel.

Further, the valve body has two outlet channels and a low pressure channel, the two outlet channels and the low pressure channel are arranged on one side of the valve body side by side, the inlet channel is arranged on the other side of the valve body, the low pressure channel is arranged between the two outlet channels, the inlet channel is arranged corresponding to the low pressure channel, and the blocking portion is arranged in the middle of the sliding block.

Further, the cross-sectional dimension of the blocking portion is greater than or equal to the dimension of the inlet passage.

By applying the technical scheme of the invention, the valve core assembly comprises the guide frame and the sliding block, the sliding block is in driving connection with the guide frame, the plugging part is arranged on one side of the sliding block, and the plugging part is used for plugging the inlet channel, so that when the sliding block moves to the middle position, the inlet channel can be plugged by the plugging part, fluid with sufficient pressure in the inlet channel can be ensured to flow into a capillary tube communicated with the inlet channel, and further, the sufficient pressure can be ensured to push the piston to move continuously, so that the sliding block moves to the reversing position. Through the structure, the situation that the sliding block stops in the reversing process can be avoided, and the normal reversing is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic view of a related art reversing valve providing structure;

FIG. 2 illustrates a schematic structural diagram of a reversing valve provided in accordance with an embodiment of the present invention;

FIG. 3 illustrates a further schematic structural view of a reversing valve provided in accordance with an embodiment of the present invention;

FIG. 4 shows a schematic structural view of a first embodiment of the slider of FIG. 2;

FIG. 5 shows a schematic structural view of a second embodiment of the slider of FIG. 2;

fig. 6 shows a schematic structural diagram of a plugging portion provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. a slider; 2. an inlet duct; 3. a first outlet conduit; 4. a second outlet conduit;

10. a guide frame; 20. a slider; 21. a main body; 22. a base plate; 30. a plugging section; 40. a valve body; 41. an inlet channel; 42. an outlet channel; 43. a low pressure channel; 44. a chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 2 and 3, an embodiment of the present application provides a valve core assembly, including: a guide frame 10 and a slider 20. Wherein, the guide frame 10 is in driving connection with the sliding block 20, and the guide frame 10 is used for driving the sliding block 20 to move in the valve cavity. One side of the slider 20 is provided with a cavity, and the other side of the slider 20 is provided with a blocking part 30, and the blocking part 30 is used for blocking the inlet channel. Wherein the cavity is adapted to isolate a portion of the outlet channels to allow fluid to flow from a particular outlet channel.

Through the technical scheme that this application provided, can make slider 20 at the in-process that removes, commutates, utilize shutoff portion 30 shutoff inlet channel for outlet channel also can guarantee that inlet channel provides sufficient fluid pressure to the capillary when appearing communicating each other, and then can guarantee that the switching-over valve piston promotes leading truck 10 and slider 20 and continues to move to preset the position, guarantees the normal clear of passageway switching-over.

As shown in fig. 4, the surface of the blocking portion 30 close to the inlet channel may be a planar structure, so that the structure is simple and the manufacturing cost is low.

As shown in fig. 5, the surface of the blocking portion 30 close to the inlet channel may also be configured as an arc-shaped structure, and the blocking portion 30 is configured as an arc-shaped structure, so that the arc-shaped structure can be better attached to the end of the inlet channel, thereby improving the blocking effect.

Specifically, the size of the blocking portion 30 may be larger than the size of the end portion of the inlet channel, or may be set to be equal to the size of the end portion of the inlet channel, or may be smaller than the size of the end portion of the inlet channel, as long as the blocking portion 30 can block and obstruct the fluid of the inlet channel when moving to the position of the end portion of the inlet channel, and the fluid pressure of the capillary tube communicated with the inlet channel is ensured.

In the structure shown in fig. 4 and 5, the blocking portion 30 and the slider 20 are formed integrally, which is simple in structure, easy to process and mount, and capable of improving mounting efficiency.

Of course, the closing portion 30 and the slider 20 may be provided separately. As shown in fig. 6, the blocking portion 30 has a top surface and a bottom surface which are opposite to each other, the top surface of the blocking portion 30 is used for blocking the inlet channel, and the top surface thereof may be a plane or an arc surface. The bottom surface of the blocking portion 30 is an arc-shaped surface, the bottom surface is matched with the upper surface of the sliding block 20, and the bottom surface of the blocking portion 30 is connected with the sliding block 20. In particular, the connection can be made by gluing, welding or other connection means. Through the structure, the device structure can be simplified, the sliding block 20 and the blocking part 30 can be conveniently processed, the processing efficiency is improved, and the processing cost of parts is reduced.

In this application, this leading truck 10 is provided with dodges the hole, and slider 20 wears to establish in dodging the hole, through above-mentioned structure, makes slider 20 wear to establish and fixes in leading truck 10, and slider 20's one end is located one side of leading truck 10, and slider 20's the other end is located the opposite side of leading truck 10, so be convenient for leading truck 10 drive slider 20 lateral shifting.

Specifically, the slider 20 includes a main body 21 and a bottom plate 22, the main body 21 has a cavity, the blocking portion 30 is disposed on the top of the main body 21, the bottom plate 22 is annularly disposed on the bottom of the main body 21, the bottom plate 22 is matched with the avoiding hole to limit the relative position of the slider 20 and the guide frame 10, the bottom plate 22 is disposed on one side of the guide frame 10, and the blocking portion 30 is disposed on the other side of the guide frame 10. By providing the bottom plate 22, the wear resistance of the side of the slider 20 having the cavity can be improved, and the vertical position of the guide frame 10 and the slider 20 can be restricted by the bottom plate 22. The base plate 22 covers one side of the exit passage and the guide frame 10 drives the slide 20 in translation so that the base plate 22 moves over the exit passage.

In yet another embodiment of the present application, as shown in fig. 2 and 3, there is provided a direction valve including: a valve body 40 and a valve core assembly. The valve body 40 has an inlet passage 41, a plurality of outlet passages 42, and a chamber 44, and the inlet passage 41 and the outlet passage 42 are both communicated with the chamber 44. The valve core assembly is provided in the above embodiment, the valve core assembly is movably disposed in the chamber 44, the side of the slider 20 having the cavity is disposed toward the plurality of outlet channels 42, the side of the slider 20 having the blocking portion is disposed toward the inlet channel 41, and the blocking portion 30 has a blocking position for blocking the inlet channel 41 and a conducting position for conducting the inlet channel 41.

Wherein the slider 20 has a plurality of communication positions within the chamber 44, when the slider 20 is moved to one of the communication positions, the outlet passage 42 corresponding thereto is in communication with the chamber 44, and the other outlet passages 42 are isolated from the chamber 44 by the slider 20. In the process that the sliding block 20 moves from one of the communication positions to the next communication position, the inlet channel 41 can be blocked by the blocking part 30, so that the situation that the inlet channel 41 supplies insufficient pressure to the capillary tube communicated with the inlet channel 41 due to the fact that a plurality of outlet channels are communicated with each other in the moving process of the sliding block 20 can be avoided.

Specifically, in the present embodiment, the valve body 40 has two outlet passages 42 and a low pressure passage 43, the two outlet passages 42 and the low pressure passage 43 are arranged side by side on one side of the valve body 40, the inlet passage 41 is arranged on the other side of the valve body 40, the low pressure passage 43 is located between the two outlet passages 42, the inlet passage 41 is arranged corresponding to the low pressure passage 43, and the blocking portion 30 is located in the middle of the slider 20.

The cross-sectional dimension of the blocking portion 30 is greater than or equal to the dimension of the inlet channel 41, so as to completely block the inlet channel 41 through the blocking portion 30, so as to ensure that the inlet channel 41 can introduce fluid into the capillary when the blocking portion 30 blocks the inlet channel, and ensure that the pistons on the two sides of the guide frame 10 are pushed by the pressure of the fluid to move, thereby enabling the slider 20 to move to a preset position.

In the present embodiment, the slider 20 has a first communication position and a second communication position opposite to each other, and the blocking portion 30 can block the inlet passage 41 during the movement of the slider 20 between the first communication position and the second communication position. As shown in fig. 2, when the guide frame 10 and the slide block 20 are located at the left side of the chamber 44, the inlet passage 41 is communicated with the outlet passage 42 at the right side, and the slide block 20 is at the first communication position; when it is desired to move the guide frame 10 and slider 20 to the right, the fluid in the capillary tube communicating with the inlet port 41 is vented to the left of the chamber 44 by the upper pilot valve so that the fluid can push the piston to move to the right. As shown in fig. 3, when the slider 20 moves to the middle position, the two outlet channels 42 and the low-pressure channel 43 are communicated with each other, at this time, the pressure in the chamber 44 is low, the blocking portion 30 is arranged, and when the slider 20 moves to the middle portion, the blocking portion 30 is used to block the inlet channel 41, so that the fluid in the inlet channel 41 can be prevented from leaking into the chamber 44, thus the fluid in the inlet channel 41 can completely flow to the left side of the chamber 44, it is ensured that the fluid has sufficient pressure to push the left piston to continue moving rightward, further the guide frame 10 and the slider 20 can be driven to continue moving rightward, the cavity of the slider 20 covers the outlet channels 42 on the low-pressure channel 43 and the right side, and when the left outlet channel 42 is communicated with the inlet channel 41, the slider 20 is located at the second communication position, and the valve body completes the reversing operation.

Through the technical scheme that this application provided, its simple structure conveniently makes and processes, can avoid the condition that the switching-over failure appears in the valve body, guarantees that the valve body can normal operating.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve cartridge assembly, comprising:

a guide frame (10);

the guide frame (10) is in driving connection with the sliding block (20), a cavity is formed in one side of the sliding block (20), a blocking portion (30) is arranged on the other side of the sliding block (20), and the blocking portion (30) is used for blocking an inlet channel.

2. The valve core assembly of claim 1, wherein the surface of the blocking portion (30) adjacent the inlet passage is of arcuate configuration.

3. The spool assembly of claim 1, wherein a surface of the blocking portion (30) proximate the inlet passage is of planar configuration.

4. The valve core assembly of claim 1, wherein the blocking portion (30) is of integral construction with the slider (20).

5. The valve core assembly of claim 1, wherein the blocking portion (30) has a top surface and a bottom surface which are oppositely arranged, the top surface of the blocking portion (30) is used for blocking the inlet channel, the bottom surface is an arc-shaped surface, the bottom surface is matched with the upper surface of the sliding block (20), and the bottom surface of the blocking portion (30) is connected with the sliding block (20).

6. The valve core assembly of claim 1, wherein the guide frame (10) is provided with an avoiding hole, and the sliding block (20) is arranged in the avoiding hole in a penetrating manner.

7. The spool assembly of claim 6, wherein the slider (20) comprises a main body (21) and a bottom plate (22), the main body (21) has a cavity, the blocking portion (30) is arranged at the top of the main body (21), the bottom plate (22) is annularly arranged at the bottom of the main body (21), the bottom plate (22) is matched with the relief hole to limit the relative position of the slider (20) and the guide frame (10), the bottom plate (22) is arranged at one side of the guide frame (10), and the blocking portion (30) is arranged at the other side of the guide frame (10).

8. A reversing valve, comprising:

a valve body (40) having an inlet passage (41), a plurality of outlet passages (42), and a chamber (44), the inlet passage (41) and the outlet passages (42) each communicating with the chamber (44);

a valve core assembly according to any one of claims 1 to 7, which is movably arranged in the chamber (44), wherein the side of the slider (20) of the valve core assembly having the cavity is arranged towards the plurality of outlet channels (42), the side of the slider (20) having the blocking portion is arranged towards the inlet channel (41), and the blocking portion (30) has a blocking position for blocking the inlet channel and a conducting position for conducting the inlet channel.

9. The reversing valve according to claim 8, characterized in that the valve body (40) has two outlet channels (42) and a low pressure channel (43), the two outlet channels (42) and the low pressure channel (43) being arranged side by side on one side of the valve body (40), the inlet channel (41) being arranged on the other side of the valve body (40), the low pressure channel (43) being located between the two outlet channels (42), the inlet channel (41) being arranged in correspondence of the low pressure channel (43), the blocking portion (30) being located in the middle of the slider (20).

10. A reversing valve according to claim 8, characterized in that the cross-sectional dimension of the blocking portion (30) is greater than or equal to the dimension of the inlet channel (41).