Novel three-position clamping positioning device for reversing valve

Abstract

A novel three-position clamping positioning device for a reversing valve comprises a positioning piece, a sleeve is arranged outside the positioning piece, the positioning piece moves in the sleeve in the axial direction, a steel wire clamping ring used for limiting the position of the positioning piece is arranged on the sleeve, a groove used in cooperation with the steel wire clamping ring is formed in the periphery of the positioning piece, and the positioning piece is connected with a valve rod. According to the novel three-position clamping positioning device for the reversing valve, the steel wire clamping ring is adopted for positioning, the clamping structure is optimized, under the condition that accurate positioning of the valve rod is guaranteed, installation is convenient, the assembly efficiency is high, the problem that positioning and installation of the steel ball are complex is solved, the assembly efficiency is improved, and meanwhile the product structure is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a novel three-position clamping positioning device for a reversing valve. Background Art

[0002] The three-position positioning mechanism of the reversing valve is a positioning device for the valve stem of the reversing valve. Its positioning piece is installed at one end of the valve stem, and there are three grooves on the positioning piece, which is used to position the positioning piece when the valve stem is reversing to different positions, so that the valve stem is in a neutral position or a reversing position. When the valve stem position needs to be changed, the valve stem drives the positioning piece of the positioning mechanism to disengage from the slot until it reaches a new position.

[0003] The existing reversing valve clamping mechanism is mostly realized by the combination of a steel ball and a positioning member with a groove. The assembly of this type of positioning mechanism is relatively complicated, the steel ball is easy to fall off during installation, and the installation is complicated, which affects the assembly efficiency. The utility model optimizes the clamping structure by using a steel wire clamp ring instead of a steel ball, facilitates installation, and improves assembly efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a novel three-position positioning device for a reversing valve with a simple structure and good effect.

[0005] The utility model is realized by the following technical scheme: a novel three-position positioning device for a reversing valve, the three-position positioning device comprising a positioning member, a sleeve is arranged outside the positioning member, the positioning member moves axially in the sleeve, a wire clamp ring is arranged on the sleeve for limiting the position of the positioning member, a groove is arranged on the outer periphery of the positioning member for use with the wire clamp ring, and the positioning member is connected to the valve stem.

[0006] It is further provided that: the three-position positioning device is arranged between the valve cover and the valve core assembly.

[0007] The sleeve comprises an elongated circular sleeve and a retaining ring, and the wire clamping ring is arranged between the elongated circular sleeve and the retaining ring.

[0008] The wire clamp is a C-shaped open ring, and the positioning piece is provided with three circumferential grooves.

[0009] The C-shaped open ring is fastened to the groove of the positioning piece, and the opening width of the C-shaped open ring is smaller than the radius of the open ring.

[0010] The positioning piece is fixed to the valve stem by screws.

[0011] A limiting sleeve is arranged at one end of the sleeve away from the valve stem.

[0012] The utility model has the following advantages: the reversing valve of the utility model uses a new three-position positioning device, which adopts a wire clamping ring for positioning and optimizes the positioning structure. While ensuring accurate positioning of the valve stem, it is convenient to install and has high assembly efficiency. It solves the complex problem of steel ball positioning and installation, improves assembly efficiency, and optimizes the product structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0014] In the attached picture:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the steel wire clamp of the utility model;

[0017] Figure 3 It is an assembly schematic diagram of the utility model.

[0018] In the figure: 1. limit sleeve, 2. oblong sleeve, 3. positioning piece, 4. wire clamp, 5. retaining ring, 6. screw, 7. three-position positioning device, 8. end cover assembly, 9. valve core assembly, 10. valve body assembly.

[0019] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 A new three-position positioning device for a reversing valve is shown, and the three-position positioning device 7 includes a positioning member 3, a sleeve is provided outside the positioning member 3, the positioning member 3 moves axially in the sleeve, a wire clamp 4 is provided on the sleeve for limiting the position of the positioning member 3, the outer periphery of the positioning member 3 is provided with a groove used in conjunction with the wire clamp 4, and the positioning member 3 is connected to the valve stem. The utility model discloses a novel three-position positioning device for a reversing valve, which is connected with the valve stem when in use, and is used for fixing and limiting the position of the valve stem, so as to ensure the fixation of the position of the reversing valve after reversing. The three-position positioning device comprises a positioning member, a sleeve and a wire clamp ring. The positioning member is cylindrical and is connected with the valve stem. The position of the valve stem is limited by limiting the position of the positioning member. The positioning member is arranged in the sleeve, and the positioning member can move axially in the sleeve. The positioning member is fixed in position by the wire clamp ring through clamping. The wire clamp ring is fixed by the sleeve. The positioning member is provided with a plurality of grooves used in conjunction with the wire clamp ring. When the positioning member moves axially, the grooves at different positions are clamped with the wire clamp ring to fix the position. When the reversing valve needs to be reversed, the valve stem moves axially under the action of pressure, driving the positioning member to move, and the wire clamp ring is separated from the groove. When the valve stem moves into position, the groove at another position is just clamped with the wire clamp ring to fix the position of the valve stem, so as to achieve the positioning effect.

[0024] like Figure 1 and Figure 3 A new three-position positioning device for a reversing valve is shown, wherein the three-position positioning device 7 is arranged between the valve cover 8 and the valve core assembly 9. The sleeve includes an elongated sleeve 2 and a retaining ring 5, and the wire retaining ring 4 is arranged between the elongated sleeve 2 and the retaining ring 5. A limiting sleeve 1 is provided at one end of the sleeve away from the valve stem. One end of the sleeve of the three-position positioning device of the utility model is pressed against the valve body assembly 10, and the other end is pressed against the inner side of the valve cover assembly. The sleeve is composed of two parts, including an elongated sleeve and a retaining ring. The elongated sleeve contacts the valve cover assembly, and the retaining ring abuts against the valve body assembly. The wire retaining ring is arranged between the elongated sleeve and the retaining ring, which can be better fixed to prevent the wire retaining ring from moving axially. At the same time, a limiting sleeve is provided at one end of the elongated sleeve close to the end cover assembly to limit the moving distance of the positioning member and ensure the accuracy of the positioning of the positioning device.

[0025] like Figure 2 The shown is a novel three-position positioning device for a reversing valve, wherein the wire clamp ring 4 is a C-shaped open ring, and the positioning member 3 is provided with three circumferential grooves. The C-shaped open ring is fastened to the groove of the positioning member 3, and the opening width of the C-shaped open ring is smaller than the radius of the open ring. The wire clamp ring of the utility model is a C-shaped open ring with a smaller opening, which can be better clamped on the groove of the positioning member, and is convenient for the wire clamp ring to be removed from the groove, thereby ensuring the effectiveness of the positioning device.

[0026] like Figure 1 and Figure 3 The shown novel three-position positioning device for a reversing valve has a positioning member 3 fixed to the valve stem by screws 6. The positioning member of the utility model is fixed to the valve stem by screws, which is convenient for installation and disassembly.

[0027] The utility model discloses a novel three-position clamping positioning device for a reversing valve, which solves the problem of complicated installation of the valve core positioning structure of the existing reversing valve, avoids the situation that the steel ball is easy to fall off during installation and the complicated installation. By using a wire clamping ring instead of the steel ball, the clamping structure is optimized, the installation is convenient, and the assembly efficiency is improved.

[0028] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0029] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A novel three-position positioning device for a reversing valve, characterized in that: The three-position positioning device (7) comprises a positioning member (3), a sleeve being arranged outside the positioning member (3), the positioning member (3) moving axially in the sleeve, a steel wire clamping ring (4) being arranged on the sleeve for limiting the position of the positioning member (3), a groove being arranged on the outer periphery of the positioning member (3) for use with the steel wire clamping ring (4), and the positioning member (3) being connected to the valve stem.

2. A novel three-position positioning device for a reversing valve as claimed in claim 1, characterized in that: The three-position locking device (7) is arranged between the valve cover (8) and the valve core assembly (9).

3. A novel three-position positioning device for a reversing valve according to claim 1, characterized in that: The sleeve comprises an oblong sleeve (2) and a retaining ring (5), and the wire clamping ring (4) is arranged between the oblong sleeve (2) and the retaining ring (5).

4. A novel three-position positioning device for a reversing valve as claimed in claim 1, characterized in that: The wire clamp ring (4) is a C-shaped open ring, and the positioning piece (3) is provided with three circumferential grooves.

5. A novel three-position positioning device for a reversing valve as claimed in claim 4, characterized in that: The C-shaped open ring is fastened to the groove of the positioning member (3), and the opening width of the C-shaped open ring is smaller than the radius of the open ring.

6. A novel three-position positioning device for a reversing valve as claimed in claim 1, characterized in that: The positioning member (3) is fixed to the valve stem via a screw (6).

7. A novel three-position positioning device for a reversing valve as claimed in claim 1, characterized in that: A limiting sleeve (1) is provided at one end of the sleeve away from the valve stem.

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