A valve core

Abstract

The present invention discloses a valve core, including a main body and an adjusting mechanism. A piston and a first spring are arranged inside the main body. A sealing assembly and a water inlet are arranged on the piston. By providing an avoidance groove on the inner wall of the main body for avoiding the sealing assembly when mixed water is output at the water outlet, the sealing assembly does not contact the main body when the piston moves, thereby greatly reducing the friction force received by the piston when it moves, improving the sensitivity of the valve core, making the outlet water temperature more stable, and being more suitable for application in use scenarios with a high pressure difference.

Description

Technical Field

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

[0002] For existing ordinary valve cores, the control of hot water and cold water is achieved by the hard sealing of the upper and lower end faces of the piston with the main body. The sealing ring is generally arranged on the side wall of the piston to block the water flow on the side of the piston. When mixed water needs to be output, when the piston moves, the sealing ring will always be in contact with the main body. Therefore, relatively large friction will be generated, increasing the sliding resistance when the piston moves, reducing the sensitivity of the valve core, and the outlet water temperature is prone to instability, and it is not suitable for use in scenarios with high pressure differences. Summary of the Invention

[0003] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a valve core that can improve sensitivity and ensure the stability of the outlet water temperature.

[0004] The present invention provides a valve core, including:

[0005] A main body, on which a hot water inlet, a cold water inlet and an outlet are arranged. Inside the main body, a piston and a first spring are arranged. On the piston, a sealing assembly and a water inlet are arranged. An avoidance groove is arranged on the inner wall of the main body for avoiding the sealing assembly when mixed water is output at the outlet;

[0006] An adjusting mechanism for adjusting the outlet water temperature, and the adjusting mechanism is connected to the piston through the first spring.

[0007] The valve core provided by the embodiment of the present invention has at least the following beneficial effects: By arranging an avoidance groove on the inner wall of the main body for avoiding the sealing assembly when mixed water is output at the outlet, the sealing assembly does not contact the main body when the piston moves, thereby greatly reducing the friction force received by the piston when it moves, improving the sensitivity of the valve core, making the outlet water temperature more stable, and being more suitable for use in scenarios with high pressure differences.

[0008] In some embodiments of the present invention, a second spring is further included, and the second spring and the first spring are respectively connected to both ends of the piston.

[0009] By arranging the second spring, when the outlet water temperature changes, the elastic force of the second spring will also change accordingly, thereby causing the piston to move, adjusting the sizes of the hot water inlet and the cold water inlet, realizing the automatic adjustment of the cold and hot water ratio, keeping the outlet water temperature stable, and improving the use experience.

[0010] In some embodiments of the present invention, the adjusting mechanism includes a handle, a handle seat, and a stud. The handle is rotatably connected to the handle seat, and the handle is connected to the first spring through the stud.

[0011] By providing a handle, a handle seat, and a stud, the first spring can be driven to act by rotating the handle, and the overall structure is stable and reliable.

[0012] In some embodiments of the present invention, a snap ring is provided on the handle, which can prevent the handle from shifting, making the movement of the piston more stable and ensuring the stability of the water outlet temperature.

[0013] In some embodiments of the present invention, the sealing assembly includes a first sealing ring and a second sealing ring. The numbers of the first sealing ring and the second sealing ring are both two. The water inlet is located on the side wall of the piston. The first sealing ring and the second sealing ring are respectively arranged above and below the water inlet. The avoiding groove includes a first groove corresponding to the first sealing ring and a second groove corresponding to the second sealing ring.

[0014] The water inlet is located on the side wall of the piston. The first sealing ring and the second sealing ring are respectively arranged above and below the water inlet. When the piston moves, the opening and closing of the hot water inlet and the cold water inlet can be controlled by the first sealing ring and the second sealing ring respectively.

[0015] In some embodiments of the present invention, the water pressures received by the two first sealing rings are equal in magnitude and opposite in direction, achieving a mutual cancellation effect. Similarly, the water pressures received by the two second sealing rings are equal in magnitude and opposite in direction, achieving a mutual cancellation effect, avoiding the influence of the water pressure on the end face of the piston and making the water outlet temperature unstable.

[0016] In some embodiments of the present invention, the sealing assembly includes a first sealing ring, a second sealing ring, a third sealing ring, and a fourth sealing ring. The water inlet is located on the side wall of the piston. The first sealing ring and the second sealing ring are arranged above the water inlet. The third sealing ring and the fourth sealing ring are arranged below the water inlet. The avoiding groove includes a first groove corresponding to the first sealing ring, a second groove corresponding to the second sealing ring and the third sealing ring, and a third groove corresponding to the fourth sealing ring.

[0017] Among them, the second sealing ring and the third sealing ring share the second groove, which can reduce the number of avoiding grooves and make the overall structural strength of the main body higher.

[0018] In some embodiments of the present invention, the water pressures on the first sealing ring and the second sealing ring are equal in magnitude and opposite in direction, achieving a mutual cancellation effect. The water pressures on the third sealing ring and the fourth sealing ring are equal in magnitude and opposite in direction, achieving a mutual cancellation effect, thereby preventing the end face of the piston from being affected by the water pressure and causing the outlet water temperature to become unstable.

[0019] In some embodiments of the present invention, the sealing assembly includes a first sealing ring, a second sealing ring, and a third sealing ring. The water inlets are located at both ends of the piston. The relief groove includes a first groove corresponding to the first sealing ring, a second groove corresponding to the second sealing ring, and a third groove corresponding to the third sealing ring.

[0020] Among them, the sealing assembly includes a first sealing ring, a second sealing ring, and a third sealing ring, and the water inlets are located at both ends of the piston, which can reduce the number of sealing components and lower the cost of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the drawings and embodiments;

[0022] Figure 1 is a schematic structural diagram of a common valve core in the prior art;

[0023] Figure 2 is an exploded schematic diagram of the valve core in the first embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of the valve core in the first embodiment of the present invention;

[0025] Figure 4 is a partial schematic structural diagram of the valve core when the hot water inlet is closed in the first embodiment of the present invention;

[0026] Figure 5 is a partial schematic structural diagram of the valve core when the hot water inlet and the cold water inlet are both open in the first embodiment of the present invention;

[0027] Figure 6 is a partial schematic structural diagram of the valve core when the cold water inlet is closed in the first embodiment of the present invention;

[0028] Figure 7 is a partial schematic structural diagram of the valve core when the hot water inlet is closed in the second embodiment of the present invention;

[0029] Figure 8 is a partial schematic structural diagram of the valve core when the hot water inlet and the cold water inlet are both open in the second embodiment of the present invention;

[0030] Figure 9 is a partial schematic structural diagram of the valve core when the cold water inlet is closed in the second embodiment of the present invention;

[0031] Figure 10 Partial structural schematic diagram of the valve core when the hot water inlet is closed in the third embodiment of the present invention;

[0032] Figure 11 Partial structural schematic diagram of the valve core when the hot water inlet and the cold water inlet are opened simultaneously in the third embodiment of the present invention;

[0033] Figure 12 Partial structural schematic diagram of the valve core when the cold water inlet is closed in the third embodiment of the present invention.

[0034] The relevant reference numerals are as follows:

[0035] Main body 100, hot water inlet 110, cold water inlet 120, water outlet 130, piston 200, first spring 300, sealing assembly 400, water inlet 210, avoidance groove 140, adjusting mechanism 500, handle 510, handle seat 520, stud 530, snap ring 511, second spring 600, first sealing ring 410, second sealing ring 420, third sealing ring 430, fourth sealing ring 440, first groove 141, second groove 142, third groove 143, sealing ring 150. Detailed implementation manners

[0036] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation to the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0038] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0040] Referring to Figure 1 , which is a schematic structural diagram of a common valve core in the prior art. The existing common valve core controls hot and cold water by means of hard sealing between the upper and lower end faces of the piston 200 and the main body 100. The sealing ring 150 is generally arranged on the side wall of the piston 200 to block the water flow on the side of the piston 200. When the piston 200 moves, the sealing ring 150 will always contact the main body 100, so relatively large friction will be generated, increasing the sliding resistance when the piston 200 moves, reducing the sensitivity of the valve core, and the outlet water temperature is prone to instability, making it not suitable for use in scenarios with a high pressure difference.

[0041] Based on this, referring to Figure 2 , Figure 3 , the first embodiment of the present invention provides a valve core, which includes a main body 100 and an adjusting mechanism 500 for adjusting the outlet water temperature. Among them, a hot water inlet 110, a cold water inlet 120 and an outlet 130 are arranged on the main body 100. A piston 200 and a first spring 300 are arranged inside the main body 100. A sealing assembly 400 and a water inlet 210 are arranged on the piston 200. An avoidance groove 140 for avoiding the sealing assembly 400 when the mixed water is output from the outlet 130 is arranged on the inner wall of the main body 100; the adjusting mechanism 500 is connected to the piston 200 through the first spring 300. Among them, the output of mixed water from the outlet 130 means that hot water is input from the hot water inlet 110 while cold water is input from the cold water inlet 120, and the hot water and cold water are finally mixed and output through the outlet 130. At this time, the outlet water temperature is more suitable.

[0042] Specifically, the adjusting mechanism 500 includes a handle 510, a handle seat 520 and a stud 530. The handle 510 is screwed onto the handle seat 520, and the handle 510 is connected to the first spring 300 through the stud. By arranging the handle 510, the handle seat 520 and the stud 530, the first spring 300 can be driven to act by rotating the handle 510, and the overall structure is stable and reliable. In addition, a circlip 511 is arranged on the handle 510, which can prevent the handle 510 from shifting, making the movement of the piston 200 more stable and ensuring the stability of the outlet water temperature. It should be added that in addition to driving the first spring 300 to act by rotating the handle 510, in other embodiments, the first spring 300 can also be driven to act by pressing.

[0043] On this basis, in this embodiment, a second spring 600 is further disposed in the main body 100, and the second spring 600 and the first spring 300 are respectively connected to both ends of the piston 200. By providing the second spring 600, when the temperature of the discharged water changes, the elastic force of the second spring 600 also changes accordingly, so that the piston 200 moves to adjust the sizes of the hot water inlet 110 and the cold water inlet 120, realizing the automatic adjustment of the cold and hot water ratio, keeping the temperature of the discharged water stable, and improving the user experience.

[0044] Specifically, the sealing assembly 400 includes a first sealing ring 410 and a second sealing ring 420. The water inlet 210 is located on the side wall of the piston 200. The first sealing ring 410 and the second sealing ring 420 are symmetrically disposed above and below the water inlet 210 respectively. The avoidance groove 140 includes a first groove body 141 corresponding to the first sealing ring 410 and a second groove body 142 corresponding to the second sealing ring 420. The water inlet 210 is located on the side wall of the piston 200. The first sealing ring 410 and the second sealing ring 420 are respectively disposed above and below the water inlet 210. When the piston 200 moves, it can control the opening and closing of the hot water inlet 110 and the cold water inlet 120 through the first sealing ring 410 and the second sealing ring 420 respectively. The water pressures received by the two first sealing rings 410 are equal in magnitude and opposite in direction, achieving a mutually canceling effect. Similarly, the water pressures received by the two second sealing rings 420 are equal in magnitude and opposite in direction, achieving a mutually canceling effect, avoiding the influence of the water pressure on the end face of the piston 200 and making the temperature of the discharged water unstable. In this embodiment, the number of the first sealing rings 410 and the second sealing rings 420 is two respectively. Among them, the two first sealing rings 410 can be integrally formed or separated, and the same is true for the two second sealing rings 420.

[0045] Refer to Figures 4 - 6, the working principle of the valve core in the embodiment of the present invention is as follows: The water outlet 130 outputs cold water under normal circumstances. At this time, the position of the first sealing ring 410 corresponds to the first groove 141, and the cold water inlet 120 is communicated with the water inlet 210; the second sealing ring 420 contacts the inner wall of the main body 100, separating the water inlet 210 and the hot water inlet 110. When hot water is needed, rotate the handle 510 to push the stud 530 downward, causing the first spring 300 to act and push the piston 200 downward. The second sealing ring 420 leaves the inner wall of the main body 100 and faces the second groove 142. At this time, both the cold water inlet 120 and the hot water inlet 110 are communicated with the water inlet 210, and the water outlet 130 outputs mixed water. As the piston 200 slides downward, the cold water inlet 120 becomes smaller and the hot water inlet 110 becomes larger, and the water temperature at the water outlet 130 becomes higher and higher until the first sealing ring 410 contacts the inner wall of the main body 100 and the cold water inlet 120 is closed. When the cold and hot water pressures or temperatures change, if the temperature of the mixed water tends to rise, the second spring 600 expands with a greater force under the influence of the water temperature, pushing the piston 200 upward to slide, reducing the hot water inlet 110 while increasing the cold water inlet 120, automatically adjusting the cold and hot water inlet ratios, so as to keep the temperature of the mixed water stable. On the contrary, if the temperature of the mixed water tends to decrease, the second spring 600 contracts with a smaller force under the influence of the water temperature, and the first spring 300 pushes the piston 200 downward to move, reducing the cold water inlet 120 while increasing the hot water inlet 110, automatically adjusting the cold and hot water inlet ratios, so as to keep the temperature of the mixed water stable.

[0046] By providing an avoidance groove 140 on the inner wall of the main body 100 for avoiding the sealing assembly 400 when the water outlet 130 outputs mixed water, the sealing assembly 400 does not contact the main body 100 when the piston 200 acts, thereby greatly reducing the friction force received by the piston 200 when it acts, improving the sensitivity of the valve core, making the outlet water temperature more stable, and being more suitable for application in high pressure difference usage scenarios.

[0047] Moreover, the valve core in this embodiment seals cold water and hot water through the first sealing ring 410 and the second sealing ring 420. Compared with the prior art in which the upper and lower end faces of the piston 200 are used for hard sealing with the main body 100, it is easier to achieve the interruption of hot water flow when cold water is interrupted, avoiding scalding and having higher usage safety.

[0048] In addition, referring to Figures 7 - 9, the second embodiment of the present invention further provides a valve core. The difference from the first embodiment is that the sealing assembly 400 includes a first sealing ring 410, a second sealing ring 420, a third sealing ring 430, and a fourth sealing ring 440. The water inlet 210 is located on the side wall of the piston 200. The first sealing ring 410 and the second sealing ring 420 are arranged above the water inlet 210, and the third sealing ring 430 and the fourth sealing ring 440 are arranged below the water inlet 210. The avoidance groove 140 includes a first groove body 141 corresponding to the first sealing ring 410, a second groove body 142 corresponding to the second sealing ring 420 and the third sealing ring 430, and a third groove body 143 corresponding to the fourth sealing ring 440. Moreover, the water pressures received by the first sealing ring 410 and the second sealing ring 420 are equal in magnitude and opposite in direction, achieving the effect of mutual cancellation. Similarly, the water pressures received by the third sealing ring 430 and the fourth sealing ring 440 are equal in magnitude and opposite in direction, achieving the effect of mutual cancellation, avoiding the influence of the water pressure on the end face of the piston 200 and making the outlet water temperature unstable.

[0049] Among them, the second sealing ring 420 and the third sealing ring 430 share the second groove body 142, which can reduce the number of avoidance grooves 140 and make the overall structural strength of the main body 100 higher.

[0050] In this embodiment, the hot water inlet 110 and the cold water inlet 120 are opposite to those in the first embodiment. The working principle of the valve core in this embodiment is similar to that in the first embodiment, and will not be elaborated here.

[0051] In addition, referring to Figures 10 - 12 , the third embodiment of the present invention further provides a valve core. The difference from the first embodiment is that the sealing assembly 400 includes a first sealing ring 410, a second sealing ring 420, and a third sealing ring 430. The water inlet 210 is located at both ends of the piston 200. The avoidance groove 140 includes a first groove body 141 corresponding to the first sealing ring 410, a second groove body 142 corresponding to the second sealing ring 420, and a third groove body 143 corresponding to the third sealing ring 430.

[0052] Among them, the sealing assembly 400 includes a first sealing ring 410, a second sealing ring 420, and a third sealing ring 430. The water inlet 210 is located at both ends of the piston 200, which can reduce the number of the sealing assemblies 400 and lower the cost of the valve core.

[0053] Similarly, in this embodiment, the hot water inlet 110 and the cold water inlet 120 are opposite to those in the first embodiment. The working principle of the valve core in this embodiment is similar to that in the first embodiment, and will not be elaborated here.

[0054] It can be understood that the positions of the hot water inlet 110 and the cold water inlet 120 in the above embodiments can be reversed according to actual needs, and only the movement direction of the piston needs to be changed correspondingly.

[0055] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A valve core, characterized in that, Comprising: A main body, on which a hot water inlet, a cold water inlet and a water outlet are provided. A piston and a first spring are arranged inside the main body. A sealing assembly and a water inlet are arranged on the piston. An avoidance groove for avoiding the sealing assembly when mixed water is output from the water outlet is arranged on the inner wall of the main body. The sealing assembly includes a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring arranged in sequence from top to bottom. The water inlet is located on the side wall of the piston. The first sealing ring and the second sealing ring are arranged above the water inlet. The third sealing ring and the fourth sealing ring are arranged below the water inlet. The avoidance groove includes a first groove body corresponding to the first sealing ring, a second groove body corresponding to the second sealing ring and the third sealing ring, and a third groove body corresponding to the fourth sealing ring. The water pressures received by the first sealing ring and the second sealing ring are equal in magnitude and opposite in direction. The water pressures received by the third sealing ring and the fourth sealing ring are equal in magnitude and opposite in direction; An adjusting mechanism for adjusting the water outlet temperature, and the adjusting mechanism is connected to the piston through the first spring.

2. The spool according to claim 1, characterized in that: It further includes a second spring, and the second spring and the first spring are respectively connected to both ends of the piston.

3. A valve core according to claim 1, characterized in that: The adjusting mechanism includes a handle, a handle seat and a stud. The handle is screwed onto the handle seat, and the handle is connected to the first spring through the stud.

4. A valve core according to claim 3, characterized in that: A snap ring is arranged on the handle.

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