A valve stem positioning structure and a valve core having the same

Abstract

The utility model relates to the technical field of faucet accessories, and particularly relates to a valve rod positioning structure and a valve core with the same, which comprises a valve core sleeve, at least one first opening is arranged on the valve core sleeve, a rotating hole is further arranged on the valve core sleeve, a valve rod is rotatably arranged in the rotating hole, a static sheet is further arranged in the valve core sleeve, a dynamic sheet is rotatably arranged between the static sheet and the valve rod, at least one push block for pushing the dynamic sheet is arranged on the valve rod, a double limiting device is arranged between the valve rod and the first opening, and a first sealing ring is further arranged at the bottom of the valve core sleeve.

Description

Technical Field

[0001] This utility model relates to the field of faucet accessories technology, and in particular to a valve stem positioning structure and a valve core having the same structure. Background Technology

[0002] A valve core is generally composed of a valve stem, a valve core sleeve, and ceramic valve discs. The valve core sleeve is the main component of the valve core, serving to position the ceramic valve discs and engage with the valve stem. Therefore, it has a large number of grooves and protrusions inside, making its structure relatively complex. For this reason, it is generally manufactured by integral casting followed by reprocessing. However, this production cost is too high and the economic efficiency is low. Moreover, this processing method is limited to metals with low hardness such as copper and cannot be used for metals with high hardness such as stainless steel. It is also prone to cracking during reprocessing, resulting in poor production convenience. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a valve stem positioning structure and a valve core having the above structure.

[0004] To achieve the above objectives, the present invention provides a valve stem positioning structure, comprising: a valve core sleeve, wherein the valve core sleeve has at least one first opening, and the valve core sleeve also has a rotating hole, wherein a valve stem is rotatably disposed within the rotating hole, and a double limiting device is provided between the valve stem and the first opening.

[0005] A further improvement is that the dual limiting device includes: an abutment block on the valve stem that abuts against the valve core sleeve to prevent it from disengaging upward from the rotation hole; a positioning pin on the valve stem; and the positioning pin abutting against the bottom of the first opening.

[0006] A further improvement is that there are two first openings, and the positioning pin is inserted through the valve stem and abuts against the two first openings.

[0007] A valve core with a valve stem positioning structure includes: a valve core sleeve, the valve core sleeve having at least one first opening, the valve core sleeve also having a rotating hole, a valve stem rotatably disposed in the rotating hole, a stationary plate being disposed inside the valve core sleeve, a movable plate being rotatably disposed between the stationary plate and the valve stem, the valve stem having at least one lever for actuating the movable plate, a double limiting device being disposed between the valve stem and the first opening, and a first sealing ring being disposed at the bottom of the valve core sleeve.

[0008] A further improvement is that the dual limiting device includes: an abutment block on the valve stem that abuts against the valve core sleeve, and a positioning pin on the valve stem that abuts against the bottom of the first opening.

[0009] A further improvement is that there are two first openings, and the positioning pin is inserted through the valve stem and abuts against the two first openings.

[0010] A further improvement is that a positioning device is provided between the stationary plate and the valve core sleeve.

[0011] A further improvement is that the positioning device includes: at least one protrusion on the valve core sleeve, and a groove on the stationary plate that engages with the protrusion.

[0012] A further improvement is that the valve core sleeve is provided with at least one second opening on the upper side of the first opening, and a second sealing ring is provided between the second opening and the first opening.

[0013] A further improvement is that the valve core sleeve is provided with a connecting thread on the outside, and a limiting block is also provided on the outside of the valve core sleeve to prevent excessive tightening. A third sealing ring is also provided between the connecting thread and the limiting block.

[0014] A further improvement is that an annular groove is provided inside the first sealing ring, and a support mesh for enhancing the stability of the first sealing ring is provided inside the annular groove.

[0015] A further improvement is that the first sealing ring is also provided with a limiting ring platform that abuts against the bottom of the valve core sleeve.

[0016] A further improvement is that the valve core sleeve is also provided with a rotating block that is easy to twist.

[0017] The advantages and beneficial effects of this utility model are as follows:

[0018] With its simple structure and convenient use, the valve stem is engaged and positioned with the valve core sleeve through a double limiting device, thereby avoiding excessive processing inside the valve core sleeve. This greatly simplifies the internal structure of the valve core sleeve, allowing the traditional production process of the valve core sleeve to be applied to more materials, improving production convenience, and also enabling the production of the valve core sleeve to adopt a simpler production process, reducing production costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a valve core with a valve stem positioning structure according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of a valve core with a valve stem positioning structure according to Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of a valve core sleeve with a valve stem positioning structure according to Embodiment 1 of this utility model;

[0022] Figure 4This is a schematic diagram of the internal components of a valve core with a valve stem positioning structure according to Embodiment 1 of this utility model;

[0023] Figure 5 This is a schematic diagram of the first sealing ring of a valve core with a valve stem positioning structure according to Embodiment 1 of this utility model;

[0024] Figure 6 This is a three-dimensional schematic diagram of a valve core with a valve stem positioning structure according to Embodiment 2 of this utility model;

[0025] Figure 7 This is a schematic diagram of the internal components of a valve core with a valve stem positioning structure according to Embodiment 2 of this utility model;

[0026] Figure 8 This is a three-dimensional schematic diagram of a valve core moving plate and stationary plate with a valve stem positioning structure according to Embodiment 2 of this utility model;

[0027] Figure 9 This is a three-dimensional schematic diagram of the engagement of a valve core and valve stem with a valve stem positioning structure and a moving plate according to Embodiment 2 of this utility model.

[0028] In the diagram: 1. Valve core sleeve; 2. First opening; 3. Rotating hole; 4. Valve stem; 5. Stationary plate; 6. Moving plate; 7. Pulley; 8. First sealing ring; 9. Abutment block; 10. Positioning pin; 11. Protrusion; 12. Groove; 13. Stabilizing ring platform; 14. Connecting thread; 15. Limiting block; 16. Annular groove; 17. Support mesh; 18. Fourth sealing ring; 19. Limiting ring platform; 20. Rotating block;

[0029] 21. Valve core sleeve; 22. First opening; 23. Second opening; 24. Second sealing ring. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model. Example 1

[0031] like Figures 1-5 As shown, a valve core with a valve stem 4 positioning structure includes: a valve core sleeve 1, the valve core sleeve 1 having at least one first opening 2, the valve core sleeve 1 also having a rotating hole 3, a valve stem 4 rotatably disposed in the rotating hole 3, a stationary plate 5 disposed in the valve core sleeve 1, a movable plate 6 rotatably disposed between the stationary plate 5 and the valve stem 4, at least one lever 7 for actuating the movable plate 6 disposed on the valve stem 4, a double limiting device disposed between the valve stem 4 and the first opening 2, and a first sealing ring 8 disposed at the bottom of the valve core sleeve 1 to prevent the stationary plate 5 from falling off and to enhance the sealing performance.

[0032] To facilitate the positioning of the valve stem 4, the dual limiting device includes: an abutting block 9 on the valve stem 4 that abuts against the valve core sleeve 1, and a positioning pin 10 on the valve stem 4, the positioning pin 10 abutting against the bottom of the first opening 2;

[0033] The abutting block 9 abuts against the valve core sleeve 1 to prevent the valve stem 4 from moving upwards, and the positioning pin 10 abuts against the bottom of the first opening 2 to prevent the valve stem 4 from moving downwards. When the valve stem 4 rotates, the positioning pin 10 will also abut against the left and right sides of the first opening 2. Therefore, the manufacturer can control the angle at which the valve stem 4 can rotate by controlling the opening angle of the first opening 2, thereby controlling the moving plate 6 to be fully open or fully closed.

[0034] In order to increase the inflow and outflow of water and enhance the positioning stability of the valve stem 4, there are two first openings 2, and the positioning pin 10 is provided through the valve stem 4 and abuts against the two first openings 2.

[0035] To facilitate the positioning of the stationary plate 5, a positioning device is provided between the stationary plate 5 and the valve core sleeve 1. The positioning device includes: at least one protrusion 11 on the valve core sleeve 1, and a groove 12 on the stationary plate 5 that engages with the protrusion 11.

[0036] There are two protrusions 11 and two grooves 12 to enhance stability;

[0037] During production, a punch press is used to directly punch the outer side of the valve core sleeve 1 to make it concave inward to form a protrusion 11. Compared with the previous snap-fit ​​structure, this further reduces the production difficulty of the valve core sleeve 1.

[0038] To enhance the strength of the valve core and facilitate stamping, a stabilizing ring platform 13 with matching paddle block 7 is provided on the upper side of the valve core sleeve 1.

[0039] To facilitate valve core installation, the valve core sleeve 1 is provided with a connecting thread 14 on the outside, and a limiting block 15 is also provided on the outside of the valve core sleeve 1 to prevent excessive tightening. A third sealing ring is also provided between the connecting thread 14 and the limiting block 15.

[0040] In order to enhance the strength of the first sealing ring 8 and prevent it from deforming and affecting the seal, an annular groove 16 is provided in the first sealing ring 8, and a support net 17 for enhancing the stability of the first sealing ring 8 is provided in the annular groove 16; the support net 17 is a rigid plastic support net.

[0041] To enhance sealing, a number of fourth sealing rings 18 are provided on the valve stem 4 between the valve stem 4 and the rotating hole 3;

[0042] The first sealing ring 8, the third sealing ring, and the fourth sealing ring 18 are all rubber rings or silicone rings.

[0043] To enhance sealing, the first sealing ring 8 is also provided with a limiting ring platform 19 that abuts against the bottom of the valve core sleeve 1.

[0044] To facilitate the installation of the valve core, the valve core sleeve 1 is also provided with a rotating block 20 that is easy to twist.

[0045] Working principle: During production, a pin hole is first drilled on the valve stem 4, then the valve stem 4 is installed on the valve core sleeve 1, and the positioning pin 10 is installed in the pin hole. The positioning pin 10 and the pin hole are interference fit, so that the positioning pin 10 abuts against the first opening 2. At this time, the moving plate 6, the stationary plate 5 and the first sealing ring 8 are installed in sequence.

[0046] When in use, the user rotates the valve stem 4, which drives the moving plate 6 to rotate, thereby opening or closing the water outlet channel. When the positioning pin 10 abuts against the left or right side of the first opening 2, the water outlet channel is fully open or fully closed. Example 2

[0047] Based on the technical solution of Embodiment 1, such as Figure 6-9 As shown, it can also be used in a water distribution valve. The valve core sleeve 21 is provided with at least one second opening 23 on the lower side of the first opening 22, and a second sealing ring 24 is provided between the first opening 22 and the second opening 23.

[0048] The second opening 23 corresponds to the position on the stationary plate for fluid outflow.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A valve stem positioning structure, characterized in that: include: A valve core sleeve is provided with at least one first opening and a rotating hole. A valve stem is rotatably disposed in the rotating hole, and a double limiting device is provided between the valve stem and the first opening.

2. The valve stem positioning structure according to claim 1, characterized in that: The dual limiting device includes: a stop block on the valve stem that abuts against the valve core sleeve to prevent it from disengaging upward from the rotation hole; a positioning pin on the valve stem that abuts against the bottom of the first opening.

3. The valve stem positioning structure according to claim 2, characterized in that: There are two first openings, and the positioning pin is inserted through the valve stem and abuts against the two first openings.

4. A valve core with a valve stem positioning structure, characterized in that: include: The valve core sleeve has at least one first opening and a rotating hole. A valve stem is rotatably disposed in the rotating hole. A stationary plate is disposed inside the valve core sleeve. A moving plate is rotatably disposed between the stationary plate and the valve stem. At least one lever is disposed on the valve stem for actuating the moving plate. A double limiting device is provided between the valve stem and the first opening. A first sealing ring is also provided at the bottom of the valve core sleeve.

5. A valve core with a valve stem positioning structure according to claim 4, characterized in that: The dual limiting device includes: an abutment block on the valve stem that abuts against the valve core sleeve, and a positioning pin on the valve stem that abuts against the bottom of the first opening.

6. A valve core with a valve stem positioning structure according to claim 5, characterized in that: There are two first openings, and the positioning pin is inserted through the valve stem and abuts against the two first openings.

7. A valve core with a valve stem positioning structure according to claim 4, characterized in that: A positioning device is provided between the stationary plate and the valve core sleeve.

8. A valve core with a valve stem positioning structure according to claim 7, characterized in that: The positioning device includes: at least one protrusion on the valve core sleeve, and a groove on the stationary plate that engages with the protrusion.

9. A valve core with a valve stem positioning structure according to claim 4, characterized in that: The valve core sleeve is provided with at least one second opening above the first opening, and a second sealing ring is provided between the second opening and the first opening.

10. A valve core with a valve stem positioning structure according to claim 4, characterized in that: The valve core sleeve is provided with a connecting thread on the outside, and a limiting block is also provided on the outside of the valve core sleeve to prevent excessive tightening. A third sealing ring is also provided between the connecting thread and the limiting block.

11. A valve core with a valve stem positioning structure according to claim 4, characterized in that: The first sealing ring has an annular groove, and the annular groove is provided with a support mesh to enhance the stability of the first sealing ring.

12. A valve core with a valve stem positioning structure according to claim 4, characterized in that: The first sealing ring is also provided with a limiting ring platform that abuts against the bottom of the valve core sleeve.

13. A valve core with a valve stem positioning structure according to claim 4, characterized in that: The valve core sleeve is also provided with a rotating block that is easy to twist.

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