A valve core

Abstract

The application provides a valve core, and belongs to the technical field of valves. The application solves the problem of resource waste caused by the fact that the existing valve core is not closed in place. The valve core comprises a valve core shell, a valve rod and a valve plate arranged in the valve core shell, the top of the valve core shell is provided with a sleeve part one and a sleeve part two which are convex and cylindrical, the sleeve part two is sleeved on the outside of the sleeve part one and an annular mounting gap is formed between the sleeve part one and the sleeve part two, an elastic member is arranged in the mounting gap, the inner end of the valve rod penetrates through the sleeve part one and extends into the valve core shell, and the two ends of the elastic member act on the valve rod and the valve core shell respectively and can reset the valve rod relative to the valve core shell after the valve rod rotates axially. The valve core has the advantages of good working stability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of valve, and relates to a valve core. BACKGROUND

[0002] Valves are control components in fluid conveying systems, and have functions such as cut-off, regulation, flow guiding, anti-backflow, pressure stabilization, shunt or overflow pressure relief, and are widely used in various pipeline systems. A valve generally comprises a valve body, a valve rod, a valve core and the like, wherein the valve core action can realize the control of waterway on-off. According to the requirements of valve use, different water outlet modes are realized, and the structure and function of the valve core are also various.

[0003] For example, a two-inlet and two-outlet faucet valve core is designed, and a Chinese patent is applied for, with the application number of 201520465408.6 and the publication number of CN204900930U. The faucet valve core comprises a valve body, a valve rod sequentially arranged in the valve body from top to bottom, a valve rod O-ring, an upper cover, a gasket arranged at the upper cover and the bottom of the valve rod, a bracket at the bottom of the valve rod, a catch pin and a spring arranged at one side of the bracket, a moving valve plate, a static valve plate, an inner sealing ring, a valve body O-ring, a first water inlet and a second water inlet are sequentially arranged in the vertical direction from top to bottom at one side of the valve body, a lower water outlet is arranged at the bottom of the other side of the valve body, and a side water outlet is arranged at the upper part of the other side of the valve body. When the valve rod is rotated to the left, water flows out through the lower water outlet, and when the valve rod is rotated to the right, water flows out through the side water outlet. The valve core realizes the switching of waterway by the rotation of the valve rod in two directions through the structure arrangement of two water inlets and two water outlets, so as to meet the use requirements of multifunctional water outlet.

[0004] However, the above-mentioned faucet valve core will remain open after being opened, which will cause a large amount of water resource waste if the user temporarily leaves, or the user opens the valve core and does not timely and completely close the valve core to the position, which will also cause resource waste. SUMMARY

[0005] The purpose of the present application is to solve the problem of resource waste caused by the existing valve core not being closed to the position.

[0006] The purpose of the present application can be realized by the following technical scheme:

[0007] A valve core includes a valve core shell, a valve stem, and a valve plate disposed within the valve core shell. The valve core shell has two protruding, cylindrical sleeve portions on its top. The second sleeve portion is sleeved on the outside of the first sleeve portion, forming an annular mounting gap between them. An elastic element is disposed within the mounting gap. The inner end of the valve stem passes through the first sleeve portion and extends into the valve core shell. The two ends of the elastic element act on the valve stem and the valve core shell respectively, and can be reset after the valve stem rotates axially relative to the valve core shell.

[0008] This valve core has a water outlet channel. By default, the outlet channel is closed. When the valve stem is subjected to external force and rotates circumferentially relative to the valve core shell, the outlet channel is opened, allowing water to flow. When the user leaves or releases their grip, the external force on the valve stem disappears, and the valve stem returns to its initial position under the elastic force of the elastic element, thus blocking the outlet channel again and stopping water flow. This avoids the waste of resources caused by the valve core not being fully closed. During the use of this valve core, the elastic element is positioned within the installation gap formed between the two cylindrical sleeve parts, which not only facilitates the installation of the elastic element but also maintains radial position limitation of the elastic element during use, reducing radial deformation and ensuring the stability of both the elastic element and the valve core.

[0009] In one type of valve core described above, the top of the sleeve portion two has a guide surface inclined relative to the axis of the sleeve portion two. The side of the sleeve portion two also has a long, narrow limiting groove, which is adjacent to the lower end of the guide surface. One end of the elastic element extends radially and is located within the limiting groove, abutting against the side wall of the limiting groove. During installation, because one end of the elastic element extends radially, it can be installed facing the guide surface. As the elastic element gradually extends into the installation gap, one side of the elastic element abuts against the guide surface and gradually slides into the limiting groove along the inclined direction of the guide surface. This not only makes installation more convenient but also ensures the stability of the end position of the elastic element by abutting against the side wall of the long, narrow limiting groove, thus ensuring the stability of the valve core operation.

[0010] In one type of valve core described above, the valve stem has a protruding abutment portion that extends into the mounting gap at a position corresponding to the mounting gap. The other end of the elastic element extends radially outward, and the side portion of that end of the elastic element abuts against the abutment portion. Providing a protruding abutment portion on the valve stem at the position corresponding to the mounting gap not only avoids interference when the valve stem rotates circumferentially relative to the valve core shell, but also allows the abutment portion to be closer to the elastic element, facilitating the abutment and limiting of the elastic element.

[0011] In one type of valve core described above, the top portion of the sleeve part one is recessed, and protruding limiting parts one and two are formed along the edge of the recess. A protruding limiting block is located on the valve stem corresponding to the recessed position. When the valve stem rotates circumferentially relative to the valve core shell, the limiting block can move within the recess and abut against either limiting part one or limiting part two. During circumferential rotation of the valve stem, the limiting part one and limiting part two, in conjunction with the limiting block, limit the rotation angle of the valve stem. Here, the recessed top of the sleeve part one to form limiting parts one and two, and the positioning of the limiting block within the recess, makes the overall structure more compact, prevents the limiting block from being exposed, reduces impacts, facilitates processing and installation, provides good integration, and ensures more stable positioning.

[0012] In one type of valve core described above, a side outlet is provided through the side of the valve core shell. The valve plate includes an adjacent movable valve plate and a stationary valve plate circumferentially fixed to the valve core shell. The movable valve plate is circumferentially fixed to the inner end of the valve stem. The stationary valve plate has an axially extending inlet hole one, an inlet hole two, and a bottom outlet at an off-center location. The end of the movable valve plate facing the stationary valve plate has a recessed connecting groove and a reversing groove. When the valve stem rotates circumferentially relative to the valve core shell, the connecting groove connects the inlet hole one to the side outlet, or the reversing groove connects the inlet hole two to the bottom outlet. By placing the side outlet and bottom outlet on the side and bottom of the entire valve core respectively, the radial dimension of the valve core is fully utilized, and the requirement for the axial dimension of the valve core is shortened, making the valve core structure more compact and more suitable for different installation locations. In addition, the separate connection of the connecting groove and the reversing groove allows the two water circuits to not be connected simultaneously, which is suitable for independent control of the on / off state of different water circuits.

[0013] In one of the valve cores described above, the inner end of the valve stem has a protruding insertion portion off-center, and the moving valve plate has a corresponding recessed insertion hole, with the insertion portion inserted into the insertion hole. The circumferential fixation between the valve stem and the moving valve plate is achieved through the insertion and engagement of the insertion portion and the insertion hole, making the connection more convenient.

[0014] Compared with the prior art, in the use of this valve core, the elastic element is set in the installation gap formed between the sleeve part one and sleeve part two, which are both cylindrical. This not only facilitates the installation of the elastic element, but also keeps the radial position of the elastic element limited during use, reduces the radial deformation of the elastic element, and thus ensures the stability of the elastic element and the valve core. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the valve core.

[0016] Figure 2 This is a cross-sectional structural diagram of the valve core.

[0017] Figure 3 This is an exploded view of the valve core.

[0018] Figure 4 This is a schematic diagram of the moving valve plate in the valve core.

[0019] In the diagram, 1. Valve core housing; 11. Sleeve part one; 111. Limiting part one; 112. Limiting part two; 12. Sleeve part two; 121. Guide surface; 122. Limiting groove; 13. Installation gap; 14. Side outlet; 2. Valve stem; 21. Abutting part; 22. Limiting block; 23. Insertion part; 3. Valve plate; 31. Moving valve plate; 311. Connecting groove; 312. Reversing groove; 313. Insertion hole; 32. Stationary valve plate; 321. Water inlet hole one; 322. Water inlet hole two; 323. Bottom outlet; 4. Elastic element; 5. Sealing ring; 6. Base. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 As shown, the valve core includes a valve core shell 1, a valve stem 2, and a valve plate 3 disposed inside the valve core shell 1. The valve core shell 1 includes a cylindrical main body and a disc-shaped base 6 that is snapped and fixed to the bottom of the main body. A through hole is provided on the base 6, and a side outlet 14 is provided on the side of the valve core shell 1.

[0022] like Figure 2 As shown, the valve core housing 1 has a protruding, cylindrical sleeve portion 11 and a sleeve portion 12 on its top. The sleeve portion 12 is coaxially sleeved on the outside of the sleeve portion 11, forming an annular mounting gap 13 between them, which is open at the top and closed at the bottom. An annular elastic element 4 is provided in the mounting gap 13. The inner end of the valve stem 2 passes through the sleeve portion 11 and extends into the valve core housing 1. In this embodiment, the elastic element 4 is a torsion spring.

[0023] like Figure 3 As shown, the top portion of one side of the sleeve part 2 12 is recessed, and protruding blocking portions are formed on both sides of the recess. The bottom surface of the recess is a guide surface 121 that is inclined relative to the axis of the sleeve part 2 12. The side of the sleeve part 2 12 also has a long strip-shaped limiting groove 122. The length direction of the limiting groove 122 is consistent with the axis of the sleeve part 2 12, and the limiting groove 122 is adjacent to the lower end of the guide surface 121. The limiting groove 122 communicates with the recess. One end of the elastic member 4 extends radially outward and is located in the limiting groove 122 and abuts against the side wall of the limiting groove 122.

[0024] like Figure 2As shown, the valve stem 2 has a protruding abutment 21 that extends into the mounting gap 13 at a position corresponding to the mounting gap 13. The other end of the elastic member 4 extends radially outward, and the side of this end of the elastic member 4 can abut against one side of the abutment 21. The valve stem 2 has a protruding block-shaped limiting block 22 at a position corresponding to the sleeve part 11.

[0025] like Figure 3 As shown, the top part of the sleeve part 11 is recessed, and a protruding limiting part 111 and a limiting part 212 are formed on the edge of the recess. The limiting block 22 is located in the recess of the sleeve part 11. When the valve stem 2 rotates circumferentially relative to the valve core shell 1, the limiting block 22 can move in the recess and abut against the limiting part 111 or the limiting part 212 respectively.

[0026] The valve plate 3 includes a movable valve plate 31 arranged adjacent to each other and a stationary valve plate 32 circumferentially fixed to the valve core shell 1. The inner end of the valve stem 2 has several protruding block-shaped insertion parts 23 off-center. The insertion parts 23 are evenly distributed around the axis of the valve stem 2 on the outer edge of the end of the valve stem 2. The movable valve plate 31 has several recessed insertion holes 313. The insertion parts 23 are inserted into each insertion hole 313 in a corresponding manner to achieve circumferential fixation of the movable valve plate 31 and the valve stem 2. The stationary valve plate 32 has a water inlet hole 321, a water inlet hole 322, and a bottom outlet 323 axially extending off-center.

[0027] like Figure 4 As shown, the moving valve plate 31 has a recessed connecting groove 311 and a reversing groove 312 at the end facing the stationary valve plate 32. The connecting groove 311 is axially penetrating the moving valve plate 31, and one side of the connecting groove 311 connects to the outer surface of the moving valve plate 31. When the valve stem 2 rotates circumferentially relative to the valve core shell 1, the connecting groove 311 can connect the first water inlet 321 to the side water outlet 14, or the reversing groove 312 can connect the second water inlet 322 to the bottom water outlet 323.

[0028] The valve core has an inlet hole 321, a side outlet 14, an inlet hole 322, and a bottom outlet 323, which together form two independent water outlet channels. In the default state, the valve stem 2 is in the middle position under the elastic force of the elastic element 4, that is, the limiting block 22 is away from the limiting part 111 and the limiting part 112, and the two water outlet channels are in the closed state.

[0029] When the valve stem 2 is subjected to an external force and rotates circumferentially relative to the valve core shell 1, the limiting block 22 moves closer to the limiting part 111 until it abuts against it. At this time, the water inlet hole 321 and the side outlet 14 are connected, and water flows into the valve core through the water inlet hole 321, flows out through the connecting groove 311 and the side outlet 14, realizing a water discharge mode. When the external force on the valve stem 2 disappears, the valve stem 2 is reset under the elastic force of the elastic element 4, and the water circuit is automatically closed.

[0030] Conversely, when the valve stem 2 is subjected to external force and rotates circumferentially to the other side relative to the valve core shell 1, the limiting block 22 moves closer to the limiting part 112 until it abuts against it. At this time, the water inlet 322 is connected to the bottom outlet 323 located at the bottom of the valve core through the reversing groove 312, and water flows out from the bottom outlet 323, realizing another water outlet mode. Similarly, when the external force disappears, the valve stem 2 resets and closes the water outlet.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A valve core, comprising a valve core housing (1), a valve stem (2), and a valve plate (3) disposed within the valve core housing (1), characterized in that, The valve core shell (1) has a protruding cylindrical sleeve part one (11) and a sleeve part two (12) on its top. The sleeve part two (12) is sleeved on the outside of the sleeve part one (11) and an annular installation gap (13) is formed between them. An elastic element (4) is provided in the installation gap (13). The inner end of the valve stem (2) passes through the sleeve part one (11) and extends into the valve core shell (1). The two ends of the elastic element (4) act on the valve stem (2) and the valve core shell (1) respectively and can be used in the valve core shell. After the rod (2) is rotated axially relative to the valve core shell (1), it is reset. The top of the sleeve part two (12) has a guide surface (121) that is inclined relative to the axis of the sleeve part two (12). The side of the sleeve part two (12) also has a long strip-shaped limiting groove (122). The limiting groove (122) is adjacent to the lower end of the guide surface (121). One end of the elastic member (4) extends radially and is located in the limiting groove (122) and abuts against the side wall of the limiting groove (122).

2. A valve core according to claim 1, characterized in that, The valve stem (2) has a protruding abutment (21) that extends into the mounting gap (13) at a position corresponding to the mounting gap (13). The other end of the elastic member (4) extends outward radially and the side of this end of the elastic member (4) can abut against the abutment (21).

3. A valve core according to claim 1 or 2, characterized in that, The top part of the sleeve part (11) is recessed and a protruding limiting part (111) and a limiting part (112) are formed on the edge of the recess. The valve stem (2) has a protruding limiting block (22) at the position corresponding to the recess. When the valve stem (2) rotates circumferentially relative to the valve core shell (1), the limiting block (22) can move in the recess and abut against the limiting part (111) or the limiting part (112) respectively.

4. A valve core according to claim 1 or 2, characterized in that, The valve core shell (1) has a side outlet (14) through it. The valve plate (3) includes a moving valve plate (31) arranged adjacent to each other and a stationary valve plate (32) fixed to the valve core shell (1) circumferentially. The moving valve plate (31) is circumferentially fixed to the inner end of the valve stem (2). The stationary valve plate (32) has an inlet hole (321), an inlet hole (322) and a bottom outlet (323) through it axially at a position off-center. The moving valve plate (31) has a recessed connecting groove (311) and a reversing groove (312) at one end facing the stationary valve plate (32). When the valve stem (2) rotates circumferentially relative to the valve core shell (1), the connecting groove (311) can connect the inlet hole (321) to the side outlet (14) or the reversing groove (312) can connect the inlet hole (322) to the bottom outlet (323).

5. A valve core according to claim 4, characterized in that, The valve stem (2) has a protruding insertion part (23) at the inner end off-center, and the moving valve plate (31) has a corresponding recessed insertion hole (313), and the insertion part (23) is inserted into the insertion hole (313).

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