Split type valve rod nut

Abstract

The utility model discloses a split type valve rod nut, and relates to the technical field of valve rod nuts. The valve cover comprises a first threaded groove and a first positioning groove which are formed in the surface of the valve cover, wherein the first positioning groove is located above the first threaded groove and communicated with the first threaded groove; the nut is in threaded connection with the first threaded groove, two symmetrically-arranged second positioning grooves are formed in the surface of the nut, and two symmetrically-arranged second threaded grooves are formed in the outer wall of the nut; a third positioning groove is formed in the bottom of the cover cap, the third positioning groove is matched with the nut, two symmetrically-arranged positioning blocks are integrally formed on the top of the third positioning groove, and the positioning blocks are matched with the second positioning groove. According to the utility model, the nut can be limited by the cover cap, so that the limiting effect is ensured, the pressure of the screw is reduced, the screw is prevented from deforming, the cover cap can be conveniently assembled and disassembled by people, and the operation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve stem nuts, in particular to a split valve stem nut. Background Art

[0002] The valve stem nut is a part fixed on the valve cover and is used to fix the position of the valve stem. The valve stem nut and the valve stem rotate along with the thread. The friction coefficient of the valve stem nut is small, so as to avoid biting or rusting.

[0003] After searching, the patent with publication number CN217927433U discloses a split valve stem nut, including a valve body, the top surface of the valve body passes through the mounting hole connected to the inside of the valve body, and the mounting hole is threadedly connected to the nut. The utility model can limit the nut by a pressure ring and a bolt to avoid excessive force of twisting the valve stem, which causes the thread of the connection between the nut and the valve body to slip. However, there are the following deficiencies in use:

[0004] 1. When the nut is under force, it is easy to exert pressure on the bolt, which may easily cause the bolt to deform.

[0005] 2. The bolts are in a vertical position and close to the valve stem, so the operating space is limited during installation and disassembly, making it inconvenient to use.

[0006] For this reason, we propose a split valve stem nut. Utility Model Content

[0007] The utility model aims to solve the shortcomings of the prior art that when the nut is stressed, it is easy to generate pressure on the bolt, which easily leads to deformation of the bolt, the bolt is in a vertical state and close to the valve stem, the operating space is limited during installation and disassembly, and it is inconvenient to use, and a split valve stem nut is proposed.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A split valve stem nut, comprising:

[0010] A first thread groove and a first positioning groove are provided on the surface of the valve cover, wherein the first positioning groove is located above the first thread groove and communicates with the first thread groove;

[0011] A nut, wherein the nut is threadedly connected to the first thread groove, a surface of the nut is provided with two symmetrically arranged second positioning grooves, and an outer wall of the nut is provided with two symmetrically arranged second thread grooves;

[0012] A cover cap, wherein a third positioning groove is provided at the bottom of the cover cap, the third positioning groove is matched with the nut, and two symmetrically arranged positioning blocks are integrally formed on the top of the third positioning groove, and the positioning blocks are matched with the second positioning groove. Two symmetrically arranged mounting holes are penetrated through the outer wall of the cover cap, and screws are provided in the mounting holes, and the screws are threadedly connected with the second thread groove.

[0013] In a possible design, a connecting ring is integrally formed on the surface of the cap, and a sealing ring is provided on the inner wall of the connecting ring.

[0014] In a possible design, an annular inclined surface is provided on one side of the second thread groove.

[0015] In a possible design, the first positioning groove and the third positioning groove are both hexagonal.

[0016] In a possible design, the mounting hole is a countersunk hole.

[0017] In a possible design, a plurality of grooves are formed on the outer wall of the cap.

[0018] In the present application, during installation, the nut, cap and sealing ring are passed through the valve stem, and then the nut and the first thread groove are connected, and then the cap is put on the nut, so that the second positioning groove limits the nut, and at the same time the positioning block enters the second positioning groove to further limit the nut, and then the screw is placed into the mounting hole and connected to the second thread groove, thereby limiting the cap, and finally the sealing ring is inserted into the inner wall of the connecting ring so that the sealing ring is located between the connecting ring and the valve stem. When disassembling, just repeat the above operations in reverse.

[0019] Beneficial effects:

[0020] In the utility model, the split valve stem nut is provided with a plurality of structures such as a cap, a first positioning groove and a positioning block. When the nut is subjected to force, the cap cooperates with the positioning block to limit the nut, and the screw only limits the cap, thereby ensuring the limiting effect, reducing the pressure on the screw, and avoiding deformation of the screw.

[0021] In the utility model, the split valve stem nut, through the arrangement of the mounting hole, the second thread groove and the screw, the horizontal arrangement of the screw can leave enough operating space, making it convenient for people to install and disassemble the cap;

[0022] In the utility model, the cover cap can be used to limit the nut, thereby ensuring the limiting effect, reducing the pressure on the screw, avoiding deformation of the screw, and making it convenient for people to install and disassemble the cover cap, making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the installation structure of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of a nut structure according to an embodiment of the utility model;

[0027] Figure 4 The figure is a schematic cross-sectional structure diagram of a cap according to an embodiment of the present invention.

[0028] In the figure: 1, valve cover; 2, first thread groove; 3, first positioning groove; 4, nut; 5, second positioning groove; 6, second thread groove; 7, cap; 8, mounting hole; 9, screw; 10, groove; 11, connecting ring; 12, sealing ring; 13, inclined surface; 14, third positioning groove; 15, positioning block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0032] Example 1

[0033] Reference Figure 1-Figure 4 , a split valve stem nut, comprising:

[0034] A first thread groove 2 and a first positioning groove 3 are provided on the surface of the valve cover 1, wherein the first positioning groove 3 is located above the first thread groove 2 and communicates with the first thread groove 2;

[0035] The nut 4 is threadedly connected to the first thread groove 2 to achieve preliminary fixation of the nut 4. The surface of the nut 4 is provided with two symmetrically arranged second positioning grooves 5, and the outer wall of the nut 4 is provided with two symmetrically arranged second thread grooves 6;

[0036] The cover cap 7 has a third positioning groove 14 at the bottom, which is matched with the nut 4 to limit the nut 4. The top of the third positioning groove 14 is integrally formed with two symmetrically arranged positioning blocks 15, which are matched with the second positioning groove 5 to limit the nut 4 again. The outer wall of the cover cap 7 has two symmetrically arranged mounting holes 8, in which screws 9 are arranged, and the screws 9 are threadedly connected with the second thread groove 6 to limit the cover cap 7.

[0037] Example 2

[0038] An improved split valve stem nut based on Example 1;

[0039] In one aspect of this embodiment, a connection ring 11 is integrally formed on the surface of the cap 7, and a sealing ring 12 is provided on the inner wall of the connection ring 11 to improve the sealing performance and prevent dust from entering through the gap.

[0040] In one aspect of this embodiment, an annular inclined surface 13 is provided on one side of the second thread groove 6 to facilitate screwing in and out of the screw, thereby improving the efficiency of installation and disassembly.

[0041] In one aspect of this embodiment, the first positioning groove 3 and the third positioning groove 14 are both hexagonal, and may also be octagonal or other shapes.

[0042] In one aspect of this embodiment, the mounting hole 8 is a countersunk hole, which facilitates the hidden installation of the screw and makes the overall appearance of the valve stem nut more beautiful.

[0043] In one aspect of this embodiment, a plurality of grooves 10 are formed on the outer wall of the cap 7 to reduce the weight of the cap and increase the friction between the cap and the palm, thereby facilitating the operator's grip.

[0044] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A split valve stem nut, characterized in that: include: A first thread groove (2) and a first positioning groove (3) are provided on the surface of the valve cover (1), wherein the first positioning groove (3) is located above the first thread groove (2) and is connected to the first thread groove (2); A nut (4), wherein the nut (4) is threadedly connected to the first thread groove (2), the surface of the nut (4) is provided with two symmetrically arranged second positioning grooves (5), and the outer wall of the nut (4) is provided with two symmetrically arranged second thread grooves (6); The cover cap (7) has a third positioning groove (14) at the bottom, the third positioning groove (14) and the nut (4) are matched, the top of the third positioning groove (14) is integrally formed with two symmetrically arranged positioning blocks (15), the positioning blocks (15) and the second positioning groove (5) are matched, and the outer wall of the cover cap (7) is penetrated by two symmetrically arranged mounting holes (8), a screw (9) is arranged in the mounting hole (8), and the screw (9) and the second thread groove (6) are threadedly connected.

2. A split valve stem nut according to claim 1, characterized in that: A connecting ring (11) is integrally formed on the surface of the cover cap (7), and a sealing ring (12) is provided on the inner wall of the connecting ring (11).

3. A split valve stem nut according to claim 1, characterized in that: An annular inclined surface (13) is provided on one side of the second thread groove (6).

4. A split valve stem nut according to claim 1, characterized in that: The first positioning groove (3) and the third positioning groove (14) are both hexagonal.

5. A split valve stem nut as claimed in claim 1, characterized in that: The mounting hole (8) is a countersunk hole.

6. A split valve stem nut according to claim 1, characterized in that: The outer wall of the cover cap (7) is provided with a plurality of grooves (10).

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