A water stringing prevention switch valve core and shower faucet

Abstract

A cross-flow prevention valve core and shower faucet are disclosed. The cross-flow prevention valve core includes a valve core shell, a core shell cover, a stationary ceramic disc, a moving ceramic disc, a transmission component, a base, and a drive component. The base, transmission component, moving ceramic disc, and stationary ceramic disc are arranged sequentially from bottom to top. The stationary ceramic disc is located on the bottom plate of the valve core shell. The core shell cover and the valve core shell are fastened together. A circular seat is inserted into a circular sleeve. A square hinge portion is hinged to the inner cavity of the circular seat. The transmission head is inserted into a transmission hole. The drive component swings, and the transmission component and the moving ceramic disc move together along a straight line to control the opening and closing of the cold / hot water inlet and outlet, as well as the mixing water inlet and outlet. When open, it connects the cold water inlet and the mixing valve core; when closed, it shuts off the cold water inlet and the mixing valve core cavity. Compared with the prior art, it eliminates the need for a check valve and still achieves backflow prevention.

Description

Technical Field

[0001] This utility model relates to a shower faucet, and more particularly to a push-button switch valve core for a shower faucet. Background Technology

[0002] The existing technology, Chinese patent 202023019949.6, describes a shower faucet, including a base with a hot water inlet, a cold water inlet, and a mixing valve. The base contains two check valve mounting chambers, each equipped with a check valve. The hot water inlet is connected to one of the check valve inlets, and the cold water inlet is connected to the other. The check valve outlet is connected to the mixing valve inlet. The base also has a check valve mounting port located within each mounting chamber, allowing the check valve to enter and exit. The check valve has a threaded section on its outer circumference, and a threaded hole matching the threaded section is located within the mounting chamber. This design, with the check valves installed inside the faucet, is simple to install, easy to replace, aesthetically pleasing, and reduces the need for external equipment, thus lowering manufacturing costs. However, the problem is that the check valves are required, and the hot and cold water inlets are affected by pressure. When a check valve is damaged, hot and cold water can easily cross-contaminate through the mixing valve. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-cross-flow switch valve core, which has the feature of controlling the passage of cold or hot water and mixing valve core of the faucet.

[0004] This utility model is implemented as follows: a water-blocking switch valve core, characterized in that it includes a valve core shell, a core shell cover, a stationary ceramic plate, a moving ceramic plate, a transmission component, a base, and a drive component.

[0005] The bottom plate of the valve core housing has cold / hot water inlet holes, cold / hot water outlet holes, a mixing water inlet hole, and a mixing water outlet hole arranged in a row.

[0006] The core cover is equipped with a circular sleeve;

[0007] The static ceramic plate is provided with cold / hot water inlet holes, cold / hot water outlet holes, mixing water inlet holes and mixing water outlet holes arranged in a row;

[0008] The moving ceramic plate is equipped with a bottom-opening cold / hot series water hole and a mixed series water hole;

[0009] The transmission component is provided with a transmission hole;

[0010] The frame includes a hollow circular seat with openings at the top and bottom and an annular seat plate. The inner cavity of the circular seat is square.

[0011] The drive unit includes a drive rod, a square hinge, and a transmission head;

[0012] The base, transmission components, moving ceramic plate, and stationary ceramic plate are arranged sequentially from bottom to top. The stationary ceramic plate is located on the bottom plate of the valve core shell. The core shell cover and the valve core shell are fastened together. The circular seat is inserted into the circular sleeve. The square hinge part is hinged to the inner cavity of the circular seat. The transmission head is inserted into the transmission hole. The drive component swings, and the transmission component and the moving ceramic plate move together along a straight line to control the opening and closing of the cold / hot water inlet and outlet water inlets, as well as the mixing water inlet and outlet water inlets.

[0013] The special feature of the anti-cross-flow switch valve core is that: a positioning block is provided inside the valve core shell, and a positioning groove is provided on the static ceramic plate, and the positioning block and the positioning groove are fitted together.

[0014] The special feature of the anti-cross-flow switch valve core is that: the lower surface of the core cover is provided with a countersunk hole surrounding the end of the circular sleeve; the annular seat plate and the countersunk hole are fitted together.

[0015] The special feature of the anti-cross-flow switch valve core is that: an axial pin is provided on the lower surface of the transmission component, and an axial groove is provided on the moving ceramic plate, with the axial pin and the axial groove being inserted into each other.

[0016] The special feature of the anti-cross-flow switch valve core is that the transmission component is circular and has a chordal plane;

[0017] The circular base plate is provided with an arc-shaped block with a chordal plane, and the chordal plane of the arc-shaped block is in contact with the radial plane of the transmission component.

[0018] The aforementioned anti-cross-flow switch valve core is characterized in that: the square hinge portion of the driving component includes a straight stop surface, an inclined stop surface, and a clearance inclined surface on one side, and an upper clearance surface and a vertical surface on the other side.

[0019] In the closed state, the straight stop surface is in contact with the wall plate of the inner cavity of the circular seat; in the open state, the inclined stop surface is in contact with the wall plate of the inner cavity of the circular seat; the upper clearance surface corresponds to the upper part of the other wall plate of the inner cavity of the circular seat.

[0020] A shower faucet, characterized by comprising a faucet body, a mixing valve core, a knob, a button, and an anti-cross-flow switch valve core as described above.

[0021] The main body of the faucet includes a mixing valve chamber, a top-out valve core chamber, a handheld valve core chamber, a cold water channel, a hot water channel, a first hot water channel, a second hot water channel, a mixed water channel, a top-out water chamber, and a handheld water outlet chamber. The hot water channel and the first hot water channel are connected and are located on the first hot water channel and the second hot water channel. The mixed water channel is located below and behind the second hot water channel.

[0022] The second hot water channel, the mixing water channel, and the cold water channel are respectively connected to the mixing valve core cavity;

[0023] The bottom plate of the ejector valve core cavity is provided with a first water inlet, a first water outlet, a mixing water inlet, and a mixing water outlet from top to bottom, and the mixing water outlet is connected to the ejector water cavity.

[0024] The bottom plate of the handheld valve core cavity is provided with a first water inlet hole, a first water outlet hole, a mixing water inlet hole and a mixing water outlet hole from top to bottom, and the mixing water outlet hole is connected to the handheld water outlet cavity;

[0025] The first water inlet, the first water outlet, and the mixing water inlet are respectively connected to the first hot water channel, the second hot water channel, and the mixing water channel;

[0026] The ejector valve core cavity and the handheld valve core cavity are respectively equipped with anti-cross-flow switch valve cores; the cold / hot water inlet, cold / hot water outlet, mixed water inlet and mixed water outlet are respectively connected to the first water inlet, the first water outlet, the mixed water inlet and the mixed water outlet.

[0027] This utility model discloses an anti-cross-flow switch valve core. Due to its structure, when opened, it connects the cold water inlet and the mixing valve core, and when closed, it cuts off the cold water inlet and the mixing valve core cavity. Compared with the prior art, it eliminates the need for a check valve and also achieves backflow prevention. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the present invention.

[0029] Figure 2 yes Figure 1 A-A view.

[0030] Figure 3 This is one of the exploded perspective views of this utility model.

[0031] Figure 4 This is the second exploded perspective view of this utility model.

[0032] Figure 5 This is a perspective view of the present invention.

[0033] Figure 6 This is a perspective view of the second embodiment of this utility model.

[0034] Figure 7 This is an exploded perspective view of the second embodiment of this utility model.

[0035] Figure 8 This is an exploded plan view of the second embodiment of this utility model.

[0036] Figure 9 This is a cross-sectional view of the second embodiment of this utility model.

[0037] Figure 10 yes Figure 9 B-B view.

[0038] Figure 11 yes Figure 9 C-C view.

[0039] Figure 12 This is one of the three-dimensional sectional views of the main body of the faucet of this utility model.

[0040] Figure 13 This is the second three-dimensional sectional view of the main body of the dragon head of this utility model. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] Example 1

[0044] like Figure 1 , Figure 2 As shown, a cross-contamination prevention switch valve core includes a valve core shell 1, a core shell cover 2, a stationary ceramic plate 3, a moving ceramic plate 4, a transmission component 5, a base 6, and a drive component 7.

[0045] like Figure 1 As shown, the bottom plate of the valve core housing 1 is provided with cold / hot water inlet holes 11, cold / hot water outlet holes 12, mixing water inlet holes 13 and mixing water outlet holes 14, which are arranged in a row.

[0046] A circular sleeve 21 is provided on the core cover 2;

[0047] The static ceramic plate 3 is provided with cold / hot water inlet hole 31, cold / hot water outlet hole 32, mixing water inlet hole 33 and mixing water outlet hole 34 arranged in a row;

[0048] The moving ceramic plate 4 is provided with a cold / hot series water hole 41 with a bottom opening and a mixed series water hole 42;

[0049] The transmission component 5 is provided with a transmission hole 51;

[0050] The frame 6 includes a hollow circular seat 61 with openings at the top and bottom and an annular seat plate 62. The inner cavity of the circular seat 61 is square.

[0051] The driving component 7 includes a driving rod portion 71, a square hinge portion 72, and a transmission head 73;

[0052] The base 6, transmission component 5, moving ceramic plate 4, and stationary ceramic plate 3 are arranged sequentially from bottom to top. The stationary ceramic plate 3 is located on the bottom plate of the valve core shell 1. The core shell cover 2 and the valve core shell 1 are fastened together. The circular seat 61 is inserted into the circular sleeve 21. The annular seat plate 62 is attached to the core shell cover. The square hinge part 72 is hinged to the inner cavity of the circular seat 61. The transmission head 73 is inserted into the transmission hole 51. The drive component 7 swings, and the transmission component 5 and the moving ceramic plate 4 move together along a straight line to control the opening and closing of the cold / hot water inlet guide hole 31 and the cold / hot water outlet guide hole 32, as well as the mixing water inlet guide hole 33 and the mixing water outlet guide hole 34.

[0053] In use, the cold / hot water inlet 11 is connected to the cold water inlet channel, the cold / hot water outlet 12 is connected to the mixing valve core cavity, the cold / hot series water hole 41 is connected to the mixing valve core cavity, and the mixing series water hole 42 is connected to the water terminal.

[0054] like Figure 1 As shown, the cold / hot series water hole 41 is opposite to the cold / hot water outlet 12 and offset from the cold / hot water inlet 11; the mixing series water hole 42 is opposite to the mixing outlet guide hole 34 and offset from the mixing inlet guide hole 33; Figure 1 In this state, the drive rod rotates clockwise, and the transmission component and the moving ceramic plate 4 move to the left together. The cold / hot series water hole 41 connects the cold / hot water inlet hole 11 and the cold / hot water outlet hole 12, and the mixing series water hole 42 connects the mixing inlet guide hole 33 and the mixing outlet guide hole 34.

[0055] As a further improvement of this utility model: a positioning block 15 is provided inside the valve core shell 1, and a positioning groove 31 is provided on the stationary ceramic plate 3. The positioning block 15 and the positioning groove 31 are fitted together to prevent the stationary ceramic plate from moving with the moving ceramic plate.

[0056] As a further improvement of this utility model: the lower surface of the core cover 2 is provided with a countersunk hole 22 surrounding the end of the circular sleeve 21; the annular seat plate 62 and the countersunk hole 22 are fitted together.

[0057] As a further improvement of this utility model: an axial pin 52 is provided on the lower surface of the transmission component 5, and an axial groove 43 is provided on the moving ceramic plate 4, and the axial pin 52 and the axial groove 43 are inserted into each other.

[0058] The transmission component 5 is circular and has a chordal plane 53;

[0059] The circular base 61 plate is provided with an arc-shaped block 611 with a chordal plane, and the chordal plane of the arc-shaped block 611 is in contact with the radial plane 53 of the transmission component 5. The chordal plane of the arc-shaped block 611 serves to guide and prevent the transmission component 5 from rotating.

[0060] The square hinge portion 72 of the driving component 7 includes a straight stop surface 721, an inclined stop surface 722, and a clearance inclined surface 723 provided on one side, and an upper clearance surface 724 and a vertical surface 725 provided on the other side.

[0061] like Figure 1 As shown, in the closed state, the straight stop surface 721 is in contact with the wall plate of the inner cavity of the circular seat 61; in the open state, the inclined stop surface 722 is in contact with the wall plate of the inner cavity of the circular seat 61; the upper clearance surface 724 corresponds to the upper part of the other wall plate of the inner cavity of the circular seat 61.

[0062] Example 2

[0063] like Figure 6 , Figure 7 , Figure 8 As shown, a shower faucet includes a faucet body 8, a mixing valve core 91, a knob 92, a button 10, and an anti-cross-flow switch valve core as described above.

[0064] like Figure 7 , Figure 8 , Figure 12 , Figure 13 As shown, the faucet body 8 includes a mixing valve core cavity 80, a top-discharge valve core cavity 81, a handheld valve core cavity 82, a cold water channel 83, a hot water channel 841, a first hot water channel 842, a second hot water channel 843, a mixing water channel 85, a top-discharge water chamber 86, and a handheld water outlet chamber 87. The hot water channel 841 and the first hot water channel 842 are connected, and the first hot water channel 842 and the second hot water channel 843 are arranged vertically. Figure 12 As shown, the mixing water channel 85 is located below and behind the second hot water channel 843;

[0065] The second hot water channel 843, the mixing water channel 85 and the cold water channel 83 are respectively connected to the mixing valve core cavity 80;

[0066] The bottom plate of the ejector valve core cavity 81 is provided with a first water inlet 811, a first water outlet 812, a mixing water inlet 813, and a mixing water outlet 814 from top to bottom. The mixing water outlet 814 is connected to the ejector water cavity 86.

[0067] The bottom plate of the handheld valve core cavity 82 is provided with a first water inlet hole, a first water outlet hole, a mixing water inlet hole and a mixing water outlet hole from top to bottom. The mixing water outlet hole is connected to the handheld water outlet cavity 87. The handheld valve core cavity 82 and the ejector valve core cavity 81 have the same structure.

[0068] The first water inlet 811, the first water outlet 812 and the mixing water inlet 813 are respectively connected to the first hot water channel 842, the second hot water channel 843 and the mixing water channel 85;

[0069] The ejector valve core cavity 81 and the handheld valve core cavity 82 are respectively equipped with anti-cross-flow switch valve cores; the cold / hot water inlet hole 11, the cold / hot water outlet hole 12, the mixed water inlet hole 13 and the mixed water outlet hole 14 are respectively connected to the first water inlet hole 811, the first water outlet hole 812, the mixed water inlet hole 813 and the mixed water outlet hole 814.

[0070] like Figure 1 , Figure 10 , Figure 11 As shown, the anti-cross-flow switch valve core is in the closed state. During use, operating knob 92 connects the mixing valve core 91 to the second hot water channel 842, the cold water channel 83, and the mixing water channel 85; (as shown) Figure 10 As shown, pressing button 10 moves the ceramic plate 4 upward; Figure 1 In the middle, the moving ceramic plate 4 moves to the left; the cold / hot series water hole 41 connects the cold / hot water inlet hole 11 and the cold / hot water outlet hole 12 in series, realizing the sequential connection of the first hot water channel 842, the first water inlet hole 811, the cold / hot water inlet hole 11, the cold / hot series water hole 41, the cold / hot water outlet hole 12, the second hot water channel 842, and the mixing valve core cavity 80; at the same time, the mixing valve core cavity 80, the mixing water channel 85, the mixing water inlet hole 813, the mixing water inlet hole 13, the mixing series water hole 42, the mixing water outlet hole 14, the mixing water outlet hole 814, and the top water outlet cavity 86 are connected. The anti-cross-flow switch valve core connects the first hot water channel and the second hot water channel, and the anti-cross-flow switch valve core changes from closed to open;

[0071] Reverse operation button 10, in Figure 10 In the middle, the moving ceramic plate 4 moves downward and closes the cold / hot water inlet hole 11 and the mixing water inlet hole 13, thereby closing the anti-cross-flow switch valve core; at the same time, the first hot water channel 842 and the second hot water channel 843 are disconnected, and only the cold water and mixing valve core are connected.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water-blocking switch valve core, characterized in that: This includes the valve core housing, core housing cover, stationary ceramic disc, moving ceramic disc, transmission components, base, and drive components. The bottom plate of the valve core housing has cold / hot water inlet holes, cold / hot water outlet holes, a mixing water inlet hole, and a mixing water outlet hole arranged in a row. The core cover is equipped with a circular sleeve; The static ceramic plate is provided with cold / hot water inlet holes, cold / hot water outlet holes, mixing water inlet holes and mixing water outlet holes arranged in a row; The moving ceramic plate is equipped with a bottom-opening cold / hot series water hole and a mixed series water hole; The transmission component is provided with a transmission hole; The frame includes a hollow circular seat with openings at the top and bottom and an annular seat plate. The inner cavity of the circular seat is square. The drive unit includes a drive rod, a square hinge, and a transmission head; The base, transmission components, moving ceramic plate, and stationary ceramic plate are arranged sequentially from bottom to top. The stationary ceramic plate is located on the bottom plate of the valve core shell. The core shell cover and the valve core shell are fastened together. The circular seat is inserted into the circular sleeve. The square hinge part is hinged to the inner cavity of the circular seat. The transmission head is inserted into the transmission hole. The drive component swings, and the transmission component and the moving ceramic plate move together along a straight line to control the opening and closing of the cold / hot water inlet and outlet water inlets, as well as the mixing water inlet and outlet water inlets.

2. The anti-cross-flow switch valve core according to claim 1, characterized in that: The valve core housing is provided with a positioning block, and the stationary ceramic plate is provided with a positioning groove, and the positioning block and the positioning groove are fitted together.

3. The anti-cross-flow switch valve core according to claim 1, characterized in that: The lower surface of the core cover is provided with a countersunk hole surrounding the end of the circular sleeve; the annular seat plate and the countersunk hole are fitted together.

4. The anti-cross-flow switch valve core according to claim 1, characterized in that: An axial pin is provided on the lower surface of the transmission component, and an axial groove is provided on the moving ceramic plate. The axial pin and the axial groove are inserted into each other.

5. The anti-cross-flow switch valve core according to claim 1, characterized in that: The transmission component is circular and has a chordal plane; The circular base plate is provided with an arc-shaped block with a chordal plane, and the chordal plane of the arc-shaped block is in contact with the radial plane of the transmission component.

6. The anti-cross-flow switch valve core according to claim 1, characterized in that: The square hinge portion of the drive component includes a straight stop surface, an inclined stop surface, and a clearance inclined surface on one side, and an upper clearance surface and a vertical surface on the other side. In the closed state, the straight stop surface is in contact with the wall plate of the inner cavity of the circular seat; in the open state, the inclined stop surface is in contact with the wall plate of the inner cavity of the circular seat; the upper clearance surface corresponds to the upper part of the other wall plate of the inner cavity of the circular seat.

7. A shower faucet, characterized in that: Includes a faucet body, a mixing valve core, a knob, a button, and an anti-cross-flow switch valve core as described in any one of claims 1-6. The main body of the faucet includes a mixing valve core chamber, a top-out valve core chamber, a handheld valve core chamber, a cold water channel, a hot water channel, a first hot water channel, a second hot water channel, a mixed water channel, a top-out water chamber, and a handheld water outlet chamber. The hot water channel and the first hot water channel are connected, and the first hot water channel and the second hot water channel are arranged vertically. The mixed water channel is located below and behind the second hot water channel. The second hot water channel, the mixing water channel, and the cold water channel are respectively connected to the mixing valve core cavity; The bottom plate of the ejector valve core cavity is provided with a first water inlet, a first water outlet, a mixing water inlet, and a mixing water outlet from top to bottom, and the mixing water outlet is connected to the ejector water cavity. The bottom plate of the handheld valve core cavity is provided with a first water inlet hole, a first water outlet hole, a mixing water inlet hole and a mixing water outlet hole from top to bottom, and the mixing water outlet hole is connected to the handheld water outlet cavity; The first water inlet, the first water outlet, and the mixing water inlet are respectively connected to the first hot water channel, the second hot water channel, and the mixing water channel; The ejector valve core cavity and the handheld valve core cavity are respectively equipped with anti-cross-flow switch valve cores; the cold / hot water inlet, cold / hot water outlet, mixed water inlet and mixed water outlet are respectively connected to the first water inlet, the first water outlet, the mixed water inlet and the mixed water outlet.

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