CN220600631U

CN220600631U - Displacement sensor mounting structure of reversing valve

Info

Publication number: CN220600631U
Application number: CN202321787239.9U
Authority: CN
Inventors: 罗成; 谭泽华
Original assignee: Hunan Valzhibao Digital Hydraulic Components Co ltd
Current assignee: Hunan Valzhibao Digital Hydraulic Components Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-03-15
Anticipated expiration: 2033-07-10

Abstract

The utility model discloses a displacement sensor mounting structure of a reversing valve, which comprises a displacement sensor body and a pull rod used for moving in the displacement sensor body, wherein the side surface of the displacement sensor body is provided with a reset mechanism, the reset mechanism comprises a flange plate, a left check ring, a right check ring, a spring and a valve core pull rod, the flange plate is fixedly arranged on the side surface of the displacement sensor body, and the displacement sensor body is fixedly arranged in a mounting hole in an electric control box of the reversing valve through the flange plate; the valve core pull rod is sleeved on the displacement sensor body, the springs are positioned between the left check ring and the right check ring and are sleeved on the valve core pull rod, the pull rod is used for being connected with the valve core of the reversing valve, a limiting structure is arranged between the left check ring and the valve core pull rod, and the right check ring is used for being contacted with the valve core of the reversing valve under the action of the springs; the right end of the valve core pull rod is fixedly connected with the valve core. The utility model changes the structure of the traditional LVDT sensor in actual use, and can effectively reduce the volume of the reversing valve.

Description

Displacement sensor mounting structure of reversing valve

Technical Field

The utility model relates to the technical field of displacement sensor installation, in particular to a displacement sensor installation structure of a reversing valve.

Background

LVDT (linear variable differential transformer) is an abbreviation for linear variable differential transformer, simply referred to as core-movable transformer. Therefore, the LVDT displacement sensor may also be referred to as an LVDT differential transformer type displacement sensor, which is composed of a primary coil, two secondary coils, an iron core, a coil former, a housing, and the like. When the core moves from the middle to the two sides, the difference between the output voltages of the secondary two coils and the core move in a linear relationship (the kind of displacement sensor). The electronic device designer is to make LVDT displacement sensors using this principle.

The application number is: CN202120241025.6. The publication number is: the utility model of CN214010352U (hereafter referred to as prior art 1) discloses an LVDT sensor for a valve, which comprises a shell, an inner tube coaxially arranged with the shell, a mounting tube and a measuring rod, wherein two ends of the inner tube are provided with baffle plates, the baffle plates and the inner tube form an I-shaped structure, the inner tube is provided with a first baffle plate and a second baffle plate, the I-shaped inner tube is divided into three parts by the first baffle plate and the second baffle plate, in particular a left side area, a middle area and a right side area, and the left side area, the middle area and the right side area are respectively provided with a first secondary coil, a primary coil and a second secondary coil; the mounting tube is provided with a stepped hole, the left end of the mounting tube is provided with a limiting part, the right end of the mounting tube is coaxially arranged with the shell, the right end of the mounting tube extends out of the shell and is connected with a fastening nut, the end part of the limiting part is provided with a connecting plate, and the connecting plate is provided with a mounting screw hole; the measuring rod comprises an iron core and a guide rod.

In actual use, the valve LVDT sensor disclosed in the prior art 1 is large in overall size due to the fact that the measuring rod is arranged inside the inner tube through the spring, and the valve LVDT sensor is inconvenient to install and increases in overall size after being installed.

Disclosure of Invention

The utility model aims to provide a displacement sensor mounting structure of a reversing valve, which changes the structure of a traditional LVDT sensor in actual use and can effectively reduce the volume of the reversing valve.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a displacement sensor mounting structure of a reversing valve comprises a displacement sensor body and a pull rod used for moving in the displacement sensor body, wherein a reset mechanism is arranged on the side surface of the displacement sensor body,

the reset mechanism comprises a flange plate, a left check ring, a right check ring, a spring and a valve core pull rod, wherein the flange plate is fixedly arranged on the side surface of the displacement sensor body, and the displacement sensor body is fixedly arranged in a mounting hole in an electric control box of the reversing valve through the flange plate; the valve core pull rod is sleeved on the displacement sensor body,

the springs are positioned between the left check ring and the right check ring and are sleeved on a valve core pull rod, the pull rod is used for being connected with a valve core of the reversing valve, a limiting structure is arranged between the left check ring and the valve core pull rod, and the right check ring is used for being contacted with the valve core of the reversing valve under the action of the springs; the right end of the valve core pull rod is fixedly connected with the valve core.

The right side of the right check ring is provided with an accommodating groove, and the valve core is connected with the valve core pull rod and then extends into the accommodating groove.

Preferably, the right end of the valve core pull rod is connected with the valve core through threads.

Wherein, the pull rod is connected with the valve core of the reversing valve through threads.

Further preferably, the mounting hole is a stepped hole, and a sealing ring is arranged between the displacement sensor body and the mounting hole.

Wherein, the flange plate is fixed with the electric control box through screws.

The limiting structure comprises a limiting hole arranged on the left baffle ring and a limiting protrusion arranged on the valve core pull rod and matched with the limiting hole.

Further defined, the spring includes inner spring and outer spring, and the diameter of outer spring is greater than the inner spring diameter, and inner spring and outer spring both ends all contact with left retaining ring, right retaining ring respectively.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the displacement sensor body is fixedly arranged in the mounting hole in the electric control box of the reversing valve through the flange plate, then the valve core pull rod is sleeved on the displacement sensor body, and the pull rod is fixedly arranged on the valve core of the reversing valve; meanwhile, as the valve core pull rod is sleeved on the moving sensor body, the valve core is reset under the action of a reset structure formed by the left check ring, the right check ring and the spring; in actual use, the spring in the motion sensor body is externally arranged, so that the size of the reversing valve can be effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the present utility model in use.

FIG. 2 is a schematic diagram showing the cooperation between the reset mechanism and the motion sensor body.

Fig. 3 is a schematic view of the internal structure of fig. 2 according to the present utility model.

Reference numerals:

101-a motion sensor body, 102-a pull rod, 103-a reset mechanism, 104-a flange plate, 105-a left check ring, 106-a right check ring, 107-a spring, 108-a valve core pull rod, 109-a limit structure, 110-a containing groove, 111-a screw, 112-an electric control box, 113-an inner spring, 114-an outer spring, 115-a valve body, 116-a valve cavity, 117-a valve core, 118-a limit hole and 119-a limit bulge.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In embodiments of the utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1-3, the present embodiment discloses a displacement sensor mounting structure of a reversing valve, comprising a displacement sensor body 101 and a pull rod 102 for moving in the displacement sensor body 101, a reset mechanism 103 is provided on the side of the displacement sensor body 101,

the reset mechanism 103 comprises a flange plate 104, a left check ring 105, a right check ring 106, a spring 107 and a valve core pull rod 108, wherein the flange plate 104 is fixedly arranged on the side surface of the displacement sensor body 101, and the displacement sensor body 101 is fixedly arranged in a mounting hole in an electric control box 112 of the reversing valve through the flange plate 104; the spool pull rod 108 is sleeved on the displacement sensor body 101,

the spring 107 is positioned between the left check ring 105 and the right check ring 106 and is sleeved on the valve core pull rod 108, the pull rod 102 is used for being connected with a valve core 117 of the reversing valve, a limiting structure 109 is arranged between the left check ring 105 and the valve core pull rod 108, and the right check ring 106 is used for being contacted with the valve core 117 of the reversing valve under the action of the spring 107; the right end of the valve core pull rod 108 is fixedly connected with the valve core 117.

It should be noted that, in this embodiment, the motion sensor body 101 mainly protects the skeleton and the coil disposed on the skeleton, and the detection of the displacement is realized by the distance of the pull rod 102, and the specific principle and structure thereof are the prior art, and are not described here in detail.

According to the utility model, the displacement sensor body 101 is fixedly arranged in a mounting hole in an electric control box 112 of a reversing valve through a flange 104, then a valve core pull rod 108 is sleeved on the displacement sensor body 101, and a pull rod 102 is fixedly arranged on a valve core 117 of the reversing valve, when the valve core 117 moves, the pull rod 102 moves in the displacement sensor body 101, and the position of the pull rod 102 is sensed by a coil in the displacement sensor body 101, so that the movement detection of the valve core 117 is realized; meanwhile, as the valve core pull rod 108 is sleeved on the motion sensor body 101, the valve core 117 is reset under the action of a reset structure formed by the left check ring 105, the right check ring 106 and the spring 107; in actual use, the spring 107 inside the motion sensor body 101 is externally arranged, so that the size of the reversing valve can be effectively reduced.

The right side of the right check ring 106 is provided with an accommodating groove 110, and the valve core 117 is connected with the valve core pull rod 108 and then extends into the accommodating groove 110.

Wherein the right end of the valve core pull rod 108 is connected with the valve core 117 through threads.

Wherein the pull rod 102 is screwed with a spool 117 of the reversing valve.

Further preferably, the mounting hole is a stepped hole, and a sealing ring is arranged between the displacement sensor body 101 and the mounting hole.

The flange 104 and the electronic control box 112 are fixed by screws 111.

In this embodiment, the limiting structure 109 includes a limiting hole 118 provided on the left retainer ring 105 and a limiting protrusion 119 provided on the spool pull rod 108 that mates with the limiting hole 118.

In actual use, the electronic control box 112 is mounted on the valve body 115 of the reversing valve, and the spool 117 is disposed within the valve cavity 116 of the valve body 115.

Example two

The present embodiment is further optimized based on the first embodiment, in the present embodiment, the spring 107 includes an inner spring 113 and an outer spring 114, the diameter of the outer spring 114 is larger than that of the inner spring 113, and both ends of the inner spring 113 and the outer spring 114 are respectively contacted with the left check ring 105 and the right check ring 106. The outer spring 114 and the inner spring 113 can improve the elasticity without increasing the length, thereby reducing the installation volume.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a displacement sensor mounting structure of switching-over valve, includes displacement sensor body and is used for the pull rod that removes in the displacement sensor body, its characterized in that: the side surface of the displacement sensor body is provided with a reset mechanism,

2. The displacement sensor mounting structure of a reversing valve according to claim 1, wherein: the right side of the right check ring is provided with an accommodating groove, and the valve core is connected with the valve core pull rod and then extends into the accommodating groove.

3. The displacement sensor mounting structure of a reversing valve according to claim 1, wherein: the right end of the valve core pull rod is connected with the valve core through threads.

4. The displacement sensor mounting structure of a reversing valve according to claim 1, wherein: the pull rod is connected with the valve core of the reversing valve through threads.

5. The displacement sensor mounting structure of a reversing valve according to claim 1, wherein: the mounting hole is the shoulder hole, is provided with the sealing washer between displacement sensor body and the mounting hole.

6. The displacement sensor mounting structure of a reversing valve according to claim 1, wherein: the flange plate is fixed with the electric control box through screws.

7. A displacement sensor mounting structure for a reversing valve according to any one of claims 1 to 6, wherein: the limiting structure comprises a limiting hole arranged on the left baffle ring and a limiting protrusion arranged on the valve core pull rod and matched with the limiting hole.

8. The displacement sensor mounting structure of a reversing valve according to claim 1, wherein: the spring comprises an inner spring and an outer spring, the diameter of the outer spring is larger than that of the inner spring, and two ends of the inner spring and the outer spring are respectively contacted with the left check ring and the right check ring.