Thermostatic valve core

Abstract

The thermostatic valve element comprises a shell and a base connected to the bottom of the shell in a screwed mode, a plurality of cold water inlets are formed in the upper portion of the shell, a plurality of hot water inlets are formed in the lower portion of the shell, and a first cold water inlet gap communicated with the cold water inlets is formed between the top of a piston and the upper portion of the shell; a second cold water inlet gap communicated with the cold water inlet is formed between the upper portion of the piston and the upper portion of the shell, and a plurality of cold water inlet holes communicated with the second cold water inlet gap are evenly distributed in the upper portion of the piston. A first hot water inlet gap and a second hot water inlet gap which are communicated with the hot water inlet are formed between the bottom of the piston and the top of the base. The whole structure is simple, the flow is large, double-water-channel water inflow is achieved, four-water-channel large-flow water inflow is achieved by arranging the four cold water inlets and the four hot water inlets during implementation, the water outlet amount is stably controlled during temperature adjustment, and temperature adjustment is accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of valve cores, and particularly to a thermostatic valve core. Background Art

[0002] With the improvement of people's living standards, thermostatic faucets have become commonly used bathroom products in people's lives. Thermostatic faucets generally achieve constant-temperature water output by installing thermostatic valve cores. However, the overall structure of current thermostatic valve cores is relatively complex, with a small flow rate. Generally, it is single-waterway inlet. When adjusting the temperature, the control of the water output is unstable, and the temperature adjustment is inaccurate, resulting in poor consumer experience. Therefore, in order to avoid the disadvantages existing in the prior art, it is necessary to make improvements to the prior art. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a thermostatic valve core with a simple structure and a large flow rate.

[0004] The present invention is achieved through the following technical solutions:

[0005] A thermostatic valve core includes a housing and a base screwed to the bottom of the housing. A valve stem, an adjusting nut, and a piston are sequentially sleeved in the housing from top to bottom. The bottom of the valve stem is screwed to the top of the adjusting nut. A first spring, a top column, and a retaining ring are sequentially installed inside the adjusting nut from top to bottom. A temperature sensing rod is connected to the inside of the piston. A second spring that abuts against the piston is installed inside the base. The upper part of the housing is provided with a plurality of cold water inlets, and the lower part of the housing is provided with a plurality of hot water inlets. A first cold water inlet gap communicating with the cold water inlets is formed between the top of the piston and the upper part of the housing. A second cold water inlet gap communicating with the cold water inlets is formed between the upper part of the piston and the upper part of the housing. A plurality of cold water inlet holes communicating with the second cold water inlet gap are evenly distributed on the upper part of the piston. A first hot water inlet gap and a second hot water inlet gap communicating with the hot water inlets are formed between the bottom of the piston and the top of the base. A plurality of upper hot water inlet holes communicating with the first hot water inlet gap are evenly distributed on the lower part of the piston. A plurality of lower hot water inlet holes communicating with the second hot water inlet gap are evenly distributed on the upper part of the base. A water passing cavity is provided inside the piston, and a mixing cavity communicating with the water passing cavity is provided inside the base.

[0006] Further, the housing is provided with a cold water inlet passage communicating the cold water inlet holes and the second cold water inlet gap.

[0007] Further, the upper part of the base is provided with a hot water inlet passage communicating the lower hot water inlet holes and the second hot water inlet gap.

[0008] Further, a positioning nut is installed on the outer side of the housing.

[0009] Further, a snap ring that abuts against the top of the housing is provided on the upper part of the valve stem, and a wear-resistant ring is provided at the contact between the upper part of the valve stem and the inner side of the top of the housing.

[0010] Further, a first O-ring is sleeved on the outer side of the housing, and a second O-ring is sleeved on the outer side of the base.

[0011] Further, a third O-ring is sleeved on the outer side of the middle part of the valve stem.

[0012] Further, a fourth O-ring is sleeved on the outer side of the upper part of the piston, and a fifth O-ring is sleeved on the outer side of the middle part of the piston.

[0013] Further, a sixth O-ring is installed on the inner side of the lower part of the piston.

[0014] Further, strainers are respectively covered on the outer sides of the cold water inlet and the hot water inlet.

[0015] Compared with the prior art, in the present invention, a plurality of cold water inlets are provided in the upper part of the housing, a plurality of hot water inlets are provided in the lower part of the housing, a first cold water inlet gap communicating with the cold water inlets is formed between the top of the piston and the upper part of the housing, a second cold water inlet gap communicating with the cold water inlets is formed between the upper part of the piston and the upper part of the housing, a plurality of cold water inlet holes communicating with the second cold water inlet gap are uniformly arranged on the upper part of the piston, a first hot water inlet gap and a second hot water inlet gap communicating with the hot water inlets are formed between the bottom of the piston and the top of the base, a plurality of upper hot water inlet holes communicating with the first hot water inlet gap are uniformly arranged on the lower part of the piston, a plurality of lower hot water inlet holes communicating with the second hot water inlet gap are uniformly arranged on the upper part of the base, the cold water inlets and the first cold water inlet gap, the cold water inlets, the second cold water inlet gap and the cold water inlet holes respectively form two cold water inlet water paths, the hot water inlets, the upper hot water inlet holes and the first hot water inlet gap, the hot water inlets, the second hot water inlet gap and the lower hot water inlet holes respectively form two hot water inlet water paths, so that the overall structure of the constant temperature valve core is simple, the flow rate is large, and double water paths are used for water inlet. During implementation, four cold water inlets and four hot water inlets are set to realize large flow rate water inlet of four water channels. When adjusting the temperature, the water output control is stable, the temperature adjustment is accurate, and the consumer experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 This is a schematic structural diagram of the constant temperature valve core of the present invention;

[0018] Figure 2 This is an exploded view of the structure of the constant temperature valve core of the present invention;

[0019] Figure 3 This is a schematic longitudinal sectional structure diagram of the constant temperature valve core of the present invention.

[0020] In the figure: 1 - outer shell; 2 - base; 3 - valve stem; 4 - adjusting nut; 5 - piston; 6 - first spring; 7 - ejector pin; 8 - circlip; 9 - temperature sensing rod; 10 - second spring; 11 - cold water inlet; 12 - hot water inlet; 13 - first cold water inlet gap; 14 - cold water inlet hole; 15 - first hot water inlet gap; 16 - upper hot water inlet hole; 17 - lower hot water inlet hole; 18 - water passing cavity; 19 - mixing cavity; 20 - cold water inlet channel; 21 - hot water inlet channel; 22 - positioning nut; 23 - snap ring; 24 - wear-resistant ring; 25 - first O-ring; 26 - second O-ring; 27 - third O-ring; 28 - fourth O-ring; 29 - fifth O-ring; 30 - sixth O-ring; 31 - filter screen; 32 - second cold water inlet gap; 33 - second hot water inlet gap. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Such as Figures 1 to 3A constant temperature valve core of the present invention is shown, which includes a housing 1 and a base 2 screwed to the bottom of the housing 1. Inside the housing 1, a valve stem 3, an adjusting nut 4 and a piston 5 are sequentially sleeved from top to bottom. The bottom of the valve stem 3 is screwed to the top of the adjusting nut 4. Inside the adjusting nut 4, a first spring 6, a top column 7 and a snap ring 8 are sequentially installed from top to bottom. A temperature sensing rod 9 is connected to the inside of the piston 5. A second spring 10 that abuts against the piston 5 is installed inside the base 2. A plurality of cold water inlets 11 are provided in the upper part of the housing 1, and a plurality of hot water inlets 12 are provided in the lower part of the housing 1. A first cold water inlet gap 13 communicating with the cold water inlets 11 is formed between the top of the piston 5 and the upper part of the housing 1. A second cold water inlet gap 32 communicating with the cold water inlets 11 is formed between the upper part of the piston 5 and the upper part of the housing 1. A plurality of cold water inlet holes 14 communicating with the second cold water inlet gap 32 are evenly distributed on the upper part of the piston 5. A first hot water inlet gap 15 and a second hot water inlet gap 33 communicating with the hot water inlets 12 are formed between the bottom of the piston 5 and the top of the base 2. A plurality of upper hot water inlet holes 16 communicating with the first hot water inlet gap 15 are evenly distributed on the lower part of the piston 5. A plurality of lower hot water inlet holes 17 communicating with the second hot water inlet gap 33 are evenly distributed on the upper part of the base 2. A water passing cavity 18 is provided inside the piston 5, and a mixing cavity 19 communicating with the water passing cavity 18 is provided inside the base 2. By providing a plurality of cold water inlets 11 in the upper part of the housing 1 and a plurality of hot water inlets 12 in the lower part of the housing 1, a first cold water inlet gap 13 communicating with the cold water inlets 11 is formed between the top of the piston 5 and the upper part of the housing 1, a second cold water inlet gap 32 communicating with the cold water inlets 11 is formed between the upper part of the piston 5 and the upper part of the housing 1, a plurality of cold water inlet holes 14 communicating with the second cold water inlet gap 32 are evenly distributed on the upper part of the piston 5, a first hot water inlet gap 15 and a second hot water inlet gap 33 communicating with the hot water inlets 12 are formed between the bottom of the piston 5 and the top of the base 2, a plurality of upper hot water inlet holes 16 communicating with the first hot water inlet gap 15 are evenly distributed on the lower part of the piston 5, and a plurality of lower hot water inlet holes 17 communicating with the second hot water inlet gap 33 are evenly distributed on the upper part of the base 2. The cold water inlets 11 and the first cold water inlet gap 13, the cold water inlets 13, the second cold water inlet gap 32 and the cold water inlet holes 14 respectively form two cold water inlet water paths, and the hot water inlets 12, the upper hot water inlet holes 16 and the first hot water inlet gap 15, the hot water inlets 12, the second hot water inlet gap 33 and the lower hot water inlet holes 17 respectively form two hot water inlet water paths, making the overall structure of the constant temperature valve core simple, with a large flow rate and dual water path inlet. During implementation, four cold water inlets 11 and four hot water inlets 12 are set to achieve large flow rate inlet of four water channels. When adjusting the temperature, the water output control is stable, and the temperature adjustment is accurate, providing a good consumer experience.

[0023] The housing 1 is provided with a cold water inlet passage 20 that connects the cold water inlet hole 14 and the second cold water inlet gap 32, facilitating the connection between the cold water inlet hole 14 and the second cold water inlet gap 32.

[0024] The upper part of the base 2 is provided with a hot water inlet passage 21 that connects the lower hot water inlet hole 17 and the second hot water inlet gap 33, facilitating the connection between the lower hot water inlet hole 17 and the second hot water inlet gap 33.

[0025] A positioning nut 22 is installed on the outer side of the housing 1. The thermostatic valve core can be connected to the positioning nut 22 using a positioning screw or can be pressed tightly by a valve core nut, diversifying the locking methods of the thermostatic valve core.

[0026] The upper part of the valve stem 3 is provided with a snap ring 23 that abuts against the top of the housing 1, fixing the valve stem 3 to the upper part of the housing 1 and preventing the valve stem 3 from moving up and down, which may affect the control of the outlet water temperature by the temperature sensing rod 9. A wear-resistant ring 24 is provided at the contact between the upper part of the valve stem 3 and the inner side of the top of the housing 1, reducing the friction between the valve stem 3 and the housing 1 and enabling the valve stem 3 to rotate smoothly relative to the housing 1.

[0027] A first O-ring 25 is sleeved on the outer side of the housing 1, and a second O-ring 26 is sleeved on the outer side of the base 2, preventing water from leaking from the upper and lower parts of the thermostatic valve core after installation. At the same time, the first O-ring 25 can prevent cross-mixing of hot and cold water.

[0028] A third O-ring 27 is sleeved on the outer side of the middle part of the valve stem 3, preventing water from leaking from the contact between the valve stem 3 and the housing 1.

[0029] A fourth O-ring 28 is sleeved on the outer side of the upper part of the piston 5, preventing cross-mixing of the two-way cold water inlets. A fifth O-ring 29 is sleeved on the outer side of the middle part of the piston 5, preventing cross-mixing of the hot and cold water inlets.

[0030] A sixth O-ring 30 is installed on the inner side of the lower part of the piston 5, preventing cross-mixing of the two-way hot water inlets.

[0031] Filter meshes 31 are covered on the outer sides of the cold water inlet 11 and the hot water inlet 12. The filter meshes 31 filter the dirt in the water flow, preventing the dirt from entering the thermostatic valve core and causing blockage.

[0032] The present invention has the following advantages:

[0033] 1. The locking methods of the thermostatic valve core are diversified. (It can be tightly positioned and side-positioned).

[0034] 2. Four-channel large-flow constant-temperature valve core.

[0035] 3. The application range is closer to the general public.

[0036] 4. Three temperature zones (high temperature zone, medium temperature zone, low temperature zone) are more user-friendly.

[0037] 5. Easy to install and replace.

[0038] 6. Suitable for use in various environments.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A constant temperature valve core, characterized in that: It includes a housing and a base screwed to the bottom of the housing. Inside the housing, a valve rod, an adjusting nut and a piston are sleeved in sequence from top to bottom. The bottom of the valve rod is screwed to the top of the adjusting nut. Inside the adjusting nut, a first spring, a top column and a snap ring are installed in sequence from top to bottom. A temperature sensing rod is connected to the inside of the piston. A second spring that abuts against the piston is installed inside the base. Several cold water inlets are provided in the upper part of the housing, and several hot water inlets are provided in the lower part of the housing. A first cold water inlet gap communicating with the cold water inlets is formed between the top of the piston and the upper part of the housing. A second cold water inlet gap communicating with the cold water inlets is formed between the upper part of the piston and the upper part of the housing. Several cold water inlet holes communicating with the second cold water inlet gap are evenly distributed on the upper part of the piston. A first hot water inlet gap and a second hot water inlet gap communicating with the hot water inlets are formed between the bottom of the piston and the top of the base. Several upper hot water inlet holes communicating with the first hot water inlet gap are evenly distributed on the lower part of the piston. Several lower hot water inlet holes communicating with the second hot water inlet gap are evenly distributed on the upper part of the base. A water passing cavity is provided inside the piston, and a mixing cavity communicating with the water passing cavity is provided inside the base.

2. The thermostatic valve core according to claim 1, wherein: The housing is provided with a cold water inlet channel communicating the cold water inlet holes and the second cold water inlet gap.

3. The constant temperature valve core according to claim 1, characterized in that: The upper part of the base is provided with a hot water inlet channel communicating the lower hot water inlet holes and the second hot water inlet gap.

4. The thermostatic valve core according to claim 1, wherein: A positioning nut is installed on the outer side of the housing.

5. The thermostatic valve core according to claim 1, characterized in that: A snap ring that abuts against the top of the housing is provided on the upper part of the valve rod, and a wear-resistant ring is provided at the contact between the upper part of the valve rod and the inner side of the housing top.

6. The thermostatic valve core according to claim 1, characterized in that: A first O-ring is sleeved on the outer side of the housing, and a second O-ring is sleeved on the outer side of the base.

7. The thermostatic valve core according to claim 1, characterized in that: A third O-ring is sleeved on the outer side of the middle part of the valve rod.

8. The thermostatic valve core according to claim 1, wherein: A fourth O-ring is sleeved on the outer side of the upper part of the piston, and a fifth O-ring is sleeved on the outer side of the middle part of the piston.

9. The thermostatic valve core according to claim 1, characterized in that: A sixth O-ring is installed on the inner side of the lower part of the piston.

10. The constant temperature valve core according to claim 1, wherein: Filter meshes are covered on the outer sides of both the cold water inlets and the hot water inlets.

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