An explosion-proof water outlet control device

Abstract

When the closure is opened, the closure is opened, and the closure is opened, so that the closure is opened and closed, and the closure is opened and closed, and the closure is opened and closed. When the closure is opened, the closure is opened and closed, and the closure is opened and closed, and the closure is opened and closed.

Description

Technical Field

[0001] The present invention relates to the technical field of bathrooms, and in particular to an explosion-proof water outlet control device. Background Art

[0002] Existing shower control valves typically include a valve body and a valve core. The valve body is equipped with a water inlet and water outlet channel, and the valve core is operated to control whether the water inlet and water outlet channels are connected or disconnected. In northern winters or low temperatures, the water inside the water control valve will freeze, causing its volume to increase. This can then cause the water control valve to crack, rendering the valve body or valve core unusable. In some cases, it can even cause the pipes connected to the water control valve to crack. Once this happens, the user needs to call a professional for repair, which usually requires replacing the valve body, the internal valve core, or even the entire water control valve. This is inconvenient and costly to maintain. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an explosion-proof water outlet control device.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is: an explosion-proof water outlet control device, comprising a valve body with a valve cavity, a valve core detachably installed in the valve cavity and a base detachably fixedly installed in the valve cavity, the base having a water inlet cavity and a water outlet cavity, the valve body having a water inlet channel communicating with the water inlet cavity and a water outlet channel communicating with the water outlet cavity, the valve core having a communicating channel capable of communicating with the water inlet cavity and the water outlet cavity, the valve core capable of controlling the connection or disconnection of the water inlet cavity and the water outlet cavity, the valve core partially extending out of the valve cavity for driving, the cavity wall of the water inlet cavity having a first pressure relief point, the pressure that the first pressure relief point can withstand is less than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand; after the first pressure relief point ruptures, the water in the water inlet cavity can be discharged out of the valve cavity through the first pressure relief point.

[0005] In a preferred embodiment, the cavity wall of the water outlet cavity has a second pressure relief point, and the pressure that the second pressure relief point can withstand is less than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand; after the second pressure relief point ruptures, the water in the water outlet cavity can be discharged out of the valve cavity through the second pressure relief point.

[0006] In a preferred embodiment, the valve body includes a first body and a second body detachably connected to the first body, the second body and the first body enclose the valve cavity, the base is arranged in the first body and the bottom surface of the base is in contact with the first body, and when the second body is fixedly connected to the first body, the valve core is pressed against the top surface of the base.

[0007] In a preferred embodiment, the water inlet channel and the water outlet channel are both provided on the first body, the water inlet cavity passes through the top and bottom surfaces of the base, the water outlet cavity passes through the top and bottom surfaces of the base, the water inlet channel is sealedly connected to the inlet of the water inlet cavity, the outlet of the water inlet cavity can be sealedly connected to the inlet of the connecting channel, the outlet of the connecting channel can be sealedly connected to the inlet of the water outlet cavity, and the outlet of the water outlet cavity is sealedly connected to the water outlet channel.

[0008] In a preferred embodiment, the base has a plurality of water inlet chambers and a water outlet chamber, the number of the water inlet channels matches the number of the water inlet chambers, each of the water inlet chambers is connected to each of the water inlet channels in a one-to-one correspondence, and the valve core can control the water outlet chamber to be connected to any one or more of the water inlet chambers, or control the water outlet chamber to be disconnected from each of the water inlet chambers;

[0009] Alternatively, the base has a water inlet cavity and a plurality of water outlet cavities, the number of the water outlet channels matches the number of the water outlet cavities, each of the water outlet cavities is connected to each of the water outlet channels in a one-to-one correspondence, and the valve core can control the water inlet cavity to switch and connect to each of the water outlet cavities, or control the water inlet cavity to be disconnected from each of the water outlet cavities;

[0010] Alternatively, the base has multiple water inlet chambers and multiple water outlet chambers, the number of the water inlet channels matches the number of the water inlet chambers, the number of the water outlet channels matches the number of the water outlet chambers, each of the water inlet chambers is connected one-to-one with each of the water inlet channels, and each of the water outlet chambers is connected one-to-one with each of the water outlet channels, and the valve core can control any one or more of the water outlet chambers to be connected with any one or more of the water inlet chambers, or control each of the water outlet chambers to be disconnected from each of the water inlet chambers.

[0011] In a preferred embodiment, the valve core includes a fixed portion fixed relative to the valve body and a movable portion rotatably disposed on the fixed portion, the movable portion having a valve stem extending out of the valve cavity for driving, and the connection or disconnection between the water inlet cavity and the water outlet cavity is controlled by rotating the movable portion;

[0012] Alternatively, the valve core is rotatably disposed in the valve cavity, and the valve core has a valve stem, which extends out of the valve cavity for driving, and the water inlet cavity and the water outlet cavity are controlled to be connected or disconnected by rotating the valve core.

[0013] In a preferred embodiment, the wall thickness of the first pressure relief point is smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core, and / or the internal stress of the first pressure relief point is greater than the internal stress of the valve body and greater than the internal stress of the valve core, and / or the strength of the material of the base is smaller than the strength of the material of the valve body and less than the strength of the material of the valve core, so that the pressure that the first pressure relief point can withstand is smaller than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand.

[0014] In a preferred embodiment, the internal stress at the first pressure relief location is increased by providing a surface with a certain curvature and / or a sharp angle formed by at least two surfaces at the first pressure relief location.

[0015] In a preferred embodiment, the wall thickness of the second pressure relief point is smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core, and / or the internal stress of the second pressure relief point is greater than the internal stress of the valve body and greater than the internal stress of the valve core, and / or the strength of the material of the base is smaller than the strength of the material of the valve body and less than the strength of the material of the valve core, so that the pressure that the second pressure relief point can withstand is smaller than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand.

[0016] In a preferred embodiment, the internal stress of the second pressure relief portion is increased by providing a surface with a certain curvature and / or a sharp angle formed by at least two surfaces at the second pressure relief portion.

[0017] In a preferred embodiment, the wall thickness of the second pressure relief point is smaller than the wall thickness of other positions of the water outlet cavity.

[0018] In a preferred embodiment, the wall thickness of the first pressure relief point is smaller than the wall thickness of other positions of the water inlet cavity.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The overall structure of the present invention is simple. A base is detachably fixedly installed in the valve cavity. The base has a water inlet cavity connected to the water inlet channel and a water outlet cavity connected to the water outlet channel. The cavity wall of the water inlet cavity has a first pressure relief point. The pressure that the first pressure relief point can withstand is less than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand. When the water in the water inlet cavity freezes at low temperature, the first pressure relief point can be broken first. After the first pressure relief point is broken, the water in the water inlet cavity can be discharged out of the valve cavity through the first pressure relief point, avoiding the bursting of the valve core or valve body or the pipeline system connected to the valve body. When repairing, it is only necessary to replace the base without replacing the valve body or valve core or the pipeline system connected to the valve body. The maintenance is convenient and the maintenance cost is low.

[0021] 2. The present invention provides a second pressure relief point on the wall of the water outlet chamber. The pressure that the second pressure relief point can withstand is smaller than the pressure that the valve body can withstand and smaller than the pressure that the valve core can withstand. When the water in the water outlet chamber freezes at low temperature, the second pressure relief point can rupture first. After the second pressure relief point ruptures, the water in the water outlet chamber can be discharged out of the valve chamber through the second pressure relief point, avoiding the bursting of the valve core or valve body or the pipeline system connected to the valve body. When repairing, it is only necessary to remove and replace the base without replacing the valve body or valve core or the pipeline system connected to the valve body. The maintenance is convenient and the maintenance cost is low.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the explosion-proof water outlet control device of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of embodiment 1 of the present invention Figure 1 (The arrows in the figure indicate the flow direction of the pressure relief water flow in the water cavity);

[0025] Figure 3 This is a cross-sectional view of embodiment 1 of the present invention Figure 2 ;

[0026] Figure 4 This is a cross-sectional view of embodiment 1 of the present invention Figure 3 (The arrows in the figure indicate the flow direction of the pressure relief water flow in the water inlet chamber);

[0027] Figure 5 It is a schematic diagram of the decomposed structure of the first embodiment of the present invention;

[0028] Figure 6 is a cross-sectional view of the valve core according to the first embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the base of the first embodiment of the present invention. Figure 1 (viewed from top to bottom);

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the base of the first embodiment of the present invention. Figure 2 (viewed from bottom to top);

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the base of the first embodiment of the present invention. Figure 3 (Viewed from bottom to top).

[0032] The following are the descriptions of the reference numerals:

[0033] 1-valve body, 11-first body, 111-water inlet channel, 112-water outlet channel, 12-second body, 13-valve chamber, 2-valve core, 21-fixed part, 211-housing, 2111-inner chamber, 2112-first through hole, 2113-second through hole, 212-fixed valve disc, 2121-first water hole, 2122-second water hole, 22-movable part, 221-movable valve disc, 2211-third water hole, 222-valve stem, 3-base, 31-water inlet chamber, 311-first pressure relief point, 32-water outlet chamber, 321-second pressure relief point, 33-second positioning column, 34-first positioning hole, a-pointed corner. DETAILED DESCRIPTION

[0034] Example 1

[0035] See Figures 1 to 9 As shown, an explosion-proof water outlet control device of this embodiment includes a valve body 1 with a valve cavity 13, a valve core 2 detachably mounted in the valve cavity 13, and a base 3 detachably fixedly mounted in the valve cavity 13. The base 3 has a water inlet cavity 31 and a water outlet cavity 32. The valve body 1 has a water inlet channel 111 communicating with the water inlet cavity 31 and a water outlet channel 112 communicating with the water outlet cavity 32. The valve core 2 has a communication channel capable of communicating with the water inlet cavity 31 and the water outlet cavity 32. The valve core 2 can control the connection or disconnection of the water inlet cavity 31 and the water outlet cavity 32. The valve core 2 partially extends out of the valve cavity 13 for driving. The water inlet cavity 31 is connected to the outlet cavity 32. The cavity wall has a first pressure relief point 311, and the pressure that the first pressure relief point 311 can withstand is smaller than the pressure that the valve body 1 can withstand and smaller than the pressure that the valve core 2 can withstand (that is, the pressure that the first pressure relief point 311 can withstand is smaller than the pressure that the valve body 1 can withstand, and the pressure that the first pressure relief point 311 can withstand is smaller than the pressure that the valve core 2 can withstand); after the first pressure relief point 311 ruptures, the water in the water inlet cavity 31 can be discharged out of the valve cavity 13 through the first pressure relief point 311; when the explosion-proof water outlet control device of this embodiment is closed (that is, the water inlet cavity 31 and the water outlet cavity 32 are disconnected), water will remain in the water inlet cavity 31 because it is connected to the water source. The overall structure of this embodiment is simple. The base 3 is detachably fixedly installed in the valve cavity 13. The base 3 has a water inlet cavity 31 connected to the water inlet channel 111 and a water outlet cavity 32 connected to the water outlet channel 112. The cavity wall of the water inlet cavity 31 has a first pressure relief point 311. The pressure that the first pressure relief point 311 can withstand is lower than the pressure that the valve body 1 and the valve core 2 can withstand. When the water in the water inlet cavity 31 freezes at low temperature, the first pressure relief point 311 can break first. After the first pressure relief point 311 breaks, the water in the water inlet cavity 31 can be discharged from the valve cavity through the broken first pressure relief point 311, avoiding the bursting of the valve core 2 or the valve body 1 or the pipeline system connected to the valve body 1. When repairing, it is only necessary to remove and replace the base 3 without replacing the valve body 1 or the valve core 2. The maintenance is convenient and the maintenance cost is low.

[0036] Specifically, in this embodiment, the wall thickness of the first pressure relief point 311 is smaller than the wall thickness of the valve body 1 and smaller than the wall thickness of the valve core 2, and the internal stress of the first pressure relief point 311 is greater than the internal stress of the valve body 1 and greater than the internal stress of the valve core 2, and the strength of the material of the base 3 is smaller than the strength of the material of the valve body 1 and smaller than the strength of the material of the valve core 2, so that the pressure that the first pressure relief point 311 can withstand is smaller than the pressure that the valve body 1 can withstand and smaller than the pressure that the valve core 2 can withstand; this embodiment increases the internal stress of the first pressure relief point 311 by providing a surface with a certain curvature at the first pressure relief point 311, and increases the internal stress of the first pressure relief point 311 by providing a sharp angle a formed by at least two surfaces; the wall thickness of the first pressure relief point 311 is smaller than the wall thickness of the cavity at other positions of the water inlet cavity 31, the water inlet channel 111 is connected to the water source, and the water outlet channel 112 is connected to the downstream pipeline. In other embodiments, the following configuration may be used so that the pressure that the first pressure relief point 311 can withstand is less than the pressure that the valve body 1 can withstand and less than the pressure that the valve core 2 can withstand: the wall thickness of the first pressure relief point is less than the wall thickness of the valve body and less than the wall thickness of the valve core, and the strength of the material of the base is less than the strength of the material of the valve body and less than the strength of the material of the valve core; or, the internal stress of the first pressure relief point may be greater than the internal stress of the valve body and greater than the internal stress of the valve core, and the strength of the material of the base is less than the strength of the material of the valve body and less than the strength of the material of the valve core; or, only the wall thickness of the first pressure relief point may be less than the wall thickness of the valve body and less than the wall thickness of the valve core; or, only the internal stress of the first pressure relief point may be greater than the internal stress of the valve body and greater than the internal stress of the valve core; or, only the strength of the material of the base may be less than the strength of the material of the valve body and less than the strength of the material of the valve core; or, the wall thickness of the first pressure relief point may be less than the wall thickness of the valve body and less than the wall thickness of the valve core, and the internal stress of the first pressure relief point may be greater than the internal stress of the valve body and greater than the internal stress of the valve core. The above method can also make the pressure that the first pressure relief point can withstand smaller than the pressure that the valve body can withstand and smaller than the pressure that the valve core can withstand. The specific implementation method can be selected according to actual conditions.

[0037] See Figures 2 to 9As shown, in this embodiment, the cavity wall of the water outlet chamber 32 has a second pressure relief point 321, and the pressure that the second pressure relief point 321 can withstand is less than the pressure that the valve body 1 can withstand and less than the pressure that the valve core 2 can withstand; when a control valve (not shown in the figure) for controlling the on-off of the water channel is also provided in the downstream pipeline of the water outlet channel 112, even if the explosion-proof water outlet control device is closed (that is, the water inlet chamber 31 and the water outlet chamber 32 are disconnected), there will be water in the water outlet channel 112 and the water outlet chamber 32. When the stored water freezes, the second pressure relief point 321 will rupture. After the second pressure relief point 321 ruptures, the water in the water outlet chamber 32 can be discharged from the valve chamber 13 through the second pressure relief point 311. In this embodiment, a second pressure relief point 321 is provided on the wall of the water outlet chamber 32. The pressure that the second pressure relief point 321 can withstand is less than the pressure that the valve body 1 can withstand and less than the pressure that the valve core 2 can withstand. When there is water in the water outlet chamber 32, the second pressure relief point 321 can rupture first during the process of the water freezing at low temperatures. After the second pressure relief point 321 ruptures, the water in the water outlet chamber 32 can be discharged from the valve chamber 13 through the second pressure relief point 321, thus preventing the valve core 2 or valve body 1 from bursting. When maintenance is required, only the base 3 needs to be removed and replaced, without replacing the valve body 1 or valve core 2. This makes maintenance convenient and low-cost. It should be noted that if the downstream waterway of the water outlet channel 112 is not provided with a control valve and the water in the water outlet channel 112 can be discharged, then the water outlet chamber 32 does not need to be provided with a second pressure relief point 321. The water outlet chamber 32 of the present invention is also provided with a pressure relief point (a second pressure relief point 321), which makes the use environment of the explosion-proof water outlet control device more flexible. It can be used in a piping system in which a control valve is provided in the downstream water channel of the water outlet channel 112, and can also be used in a piping system in which a control valve is not provided in the downstream water channel of the water outlet channel 112.

[0038] See Figures 1 to 5 As shown, in this embodiment, the valve body 1 includes a first body 11 and a second body 12 that is detachably connected to the first body 11. The second body 12 and the first body 11 enclose a valve chamber 13. The base 3 is disposed within the first body 11, and the bottom surface of the base 3 abuts the first body 11. When the second body 12 is fixedly connected to the first body 11, the second body 12 presses the valve core 2 against the top surface of the base 3, thereby achieving detachable installation of the valve core 2 and the base 3 within the valve chamber 13. This installation structure is simple and easy to assemble. In this embodiment, the first body 11 and the second body 12 are specifically connected by threads; a second positioning structure is provided between the base 3 and the first body 11, and the second positioning structure is used to achieve circumferential relative fixation of the base 3 and the first body 11. The second positioning structure specifically includes a second positioning post 33 disposed on the bottom surface of the base 3 and a second positioning groove (not shown in the figure) disposed on the bottom wall of the valve chamber 13 and engaging with the second positioning post 33.

[0039] See Figures 1 to 5As shown, in this embodiment, the water inlet channel 111 and the water outlet channel 112 are both provided on the first body 11, the water inlet chamber 31 passes through the top and bottom surfaces of the base 3, and the water outlet chamber 32 passes through the top and bottom surfaces of the base 3. The water inlet channel 111 is sealed and connected to the inlet of the water inlet chamber 31, the outlet of the water inlet chamber 31 can be sealed and connected to the inlet of the connecting channel, the outlet of the connecting channel can be sealed and connected to the inlet of the water outlet chamber 32, and the outlet of the water outlet chamber 32 is sealed and connected to the water outlet channel 112.

[0040] See Figure 6 As shown, in this embodiment, the valve core 2 includes a fixed part 21 fixed relative to the valve body 1 and a movable part 22 rotatably arranged on the fixed part 21. The movable part 22 has a valve stem 222, and the valve stem 222 extends out of the valve cavity 13 for driving. The water inlet cavity 31 and the water outlet cavity 32 are connected or disconnected by rotating the movable part 22. The valve stem 222 is configured to be driven manually or electrically.

[0041] Specifically, in this embodiment, the fixed part 21 includes a shell 211 having an inner cavity 2111 and a fixed valve disc 212 fixedly arranged in the inner cavity 2111, and the movable part 22 includes a movable valve disc 221 rotatably arranged in the inner cavity 2111 and the aforementioned valve stem 222, one end of the valve stem 222 extends into the inner cavity 2111 and cooperates with the movable valve disc 221 to rotate, and the other end of the valve stem 222 extends out of the valve cavity for driving, and the valve stem 222 presses the movable valve disc 221 against the fixed valve disc 212, and the fixed valve disc 212 abuts against the bottom wall of the shell 211, and the bottom wall of the shell 211 is provided with a first through hole 2112 sealedly connected to the outlet of the water inlet chamber 31 and a second through hole 2113 sealedly connected to the inlet of the water outlet chamber, and the fixed valve disc 212 is provided with a first water through hole 2121 sealedly connected to the first through hole 2112 and a second water passage hole 2122 sealedly connected to the second through hole 2113. A third water passage hole 2211 is provided on the movable valve disc 221. The valve stem 222 drives the movable valve disc 221 to rotate so that the third water passage hole 2211 is sealed and connected to the first water passage hole 2121 and the second water passage hole 2122, thereby sealing and connecting the water inlet chamber 31 and the water outlet chamber 32, or the movable valve disc 221 disconnects the first water passage hole 2121 and the second water passage hole 2122, thereby disconnecting the water inlet chamber 31 and the water outlet chamber 32. In this embodiment, the water flowing out of the water inlet chamber 31 passes through the first through hole 2112 of the bottom wall of the shell 211, the first water through hole 2121 of the fixed valve disc 212, the third water through hole 2211 of the movable valve disc 221, the second water through hole 2122 of the fixed valve disc 212 and the second through hole 2113 of the bottom wall of the shell 211 in sequence, and then flows into the water outlet chamber 32. That is, the first through hole 2112 of the bottom wall of the shell 211, the first water through hole 2121 of the fixed valve disc 212, the third water through hole 2211 of the movable valve disc 221, the second water through hole 2122 of the fixed valve disc 212 and the second through hole 2113 of the bottom wall of the shell 211 constitute a connecting channel on the valve core 2 that can connect the water inlet chamber 31 and the water outlet chamber 32.

[0042] In this embodiment, a first positioning structure is provided between the fixed portion 21 and the base 3, and the first positioning structure is used to achieve circumferential relative fixation of the fixed portion 21 and the base 3. The second positioning structure specifically includes a first positioning hole 34 provided on the top surface of the base 3 and a first positioning post (not shown in the figure) provided on the bottom wall of the housing 211 and capable of engaging with the first positioning hole 34. In other embodiments, it can also be configured as follows: the entire valve core is rotatably disposed within the valve cavity, the valve core has a valve stem, and the valve stem extends outside the valve cavity for driving. By rotating the valve core, the connecting channel is controlled to connect the water inlet and water outlet chambers, or the connecting channel is controlled to disconnect the water inlet and water outlet chambers.

[0043] In this embodiment, the first body 11 is fixedly connected to the wall. In this embodiment, the first pressure relief point 311 is provided on the wall of the water inlet chamber 31, and the second pressure relief point 321 is provided on the wall of the water outlet chamber 32 to prevent the valve body 1 from rupturing. Therefore, during maintenance, it is only necessary to remove the second body 12 from the first body 11 and replace the base 3, without having to break down the wall to replace the first body 11. This greatly reduces maintenance costs and makes maintenance more convenient. Of course, in other embodiments, the entire valve body can also be exposed (i.e., the valve body is not fixedly connected to the wall).

[0044] See Figures 2 to 9 As shown, in this embodiment, the base 3 has multiple water inlet chambers 31 and one water outlet chamber 32. The number of water inlet channels 111 matches the number of water inlet chambers 31. Each water inlet chamber 31 is connected to a respective water inlet channel 111 in a one-to-one correspondence. The valve core 2 can control the connection between the water outlet chamber 32 and any one or more of the water inlet chambers 31, or control the disconnection between the water outlet chamber 32 and any water inlet chamber 31. In this embodiment, "multiple" refers to two or more.

[0045] Specifically, in this embodiment, the base 3 has two water inlet chambers 31 and one water outlet chamber 32, and the valve body 1 is provided with two water inlet channels 111 and one water outlet channel 112, wherein one water inlet channel 111 is connected to a cold water source, and the other water inlet channel 111 is connected to a hot water source. By rotating the valve core 2, the water outlet chamber 32 is controlled to be connected to any one of the two water inlet chambers 31 or to be connected to both water inlet chambers 31 at the same time or to be disconnected from all water inlet chambers 31. When the water outlet chamber 32 is connected to the two water inlet chambers 31 at the same time, the cold water and the hot water are mixed in the connecting channel and then flow into the water outlet chamber 32.

[0046] See Figure 4 As shown, in this embodiment, when the first pressure relief point 311 is frozen and ruptured, the water in the water inlet chamber 31 can be discharged out of the valve chamber 13 through the first pressure relief point 311, the gap between the valve body 1 and the base 3, and the gap between the valve core 2 and the valve body 1 in sequence. This allows the water in the water inlet chamber 31 to be discharged out of the valve chamber 13 through the first pressure relief point 311 after the first pressure relief point 311 is ruptured. In other embodiments, it can also be configured such that the water in the water inlet chamber can be discharged out of the valve chamber through the first pressure relief point, the gap between the valve body and the base, the gap between the valve core and the valve body, and the gap between the first and second bodies in sequence. Alternatively, the water in the water inlet chamber can be discharged out of the valve chamber through the first pressure relief point, the gap between the valve body and the base, and the gap between the first and second bodies in sequence. This also allows the water in the water inlet chamber 31 to be discharged out of the valve chamber 13 through the first pressure relief point 311 after the first pressure relief point 311 is ruptured. The specific pressure relief path from the first pressure relief point 311 to the outside of the valve chamber 13 is not limited to this.

[0047] See Figure 3 and Figures 7 to 9As shown, in this embodiment, the wall thickness of the second pressure relief point 321 is smaller than the wall thickness of the valve body 1 and smaller than the wall thickness of the valve core 2, and the internal stress of the second pressure relief point 321 is greater than the internal stress of the valve body 1 and greater than the internal stress of the valve core 2, and the strength of the material of the base 3 is smaller than the strength of the material of the valve body 1 and smaller than the strength of the material of the valve core 2, so that the pressure that the second pressure relief point 321 can withstand is smaller than the pressure that the valve body 1 can withstand and smaller than the pressure that the valve core 2 can withstand. In this embodiment, the internal stress of the second pressure relief point 321 is increased by providing a sharp angle a formed by at least two surfaces at the second pressure relief point 321; the wall thickness of the second pressure relief point 321 is smaller than the wall thickness of the cavity wall at other positions of the water outlet cavity 32. In other embodiments, the second pressure relief point 321 may be configured to withstand a pressure smaller than the pressure that the valve body 1 can withstand and smaller than the pressure that the valve core 2 can withstand in the following manner: the wall thickness of the second pressure relief point is smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core, and the strength of the material of the base is smaller than the strength of the material of the valve body and smaller than the strength of the material of the valve core; or, the internal stress of the second pressure relief point may be greater than the internal stress of the valve body and greater than the internal stress of the valve core, and the strength of the material of the base is smaller than the strength of the material of the valve body and less than the strength of the material of the valve core; or, the wall thickness of the second pressure relief point may be smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core, and the internal stress of the second pressure relief point may be greater than the internal stress of the valve body and greater than the internal stress of the valve core; or, only the wall thickness of the second pressure relief point may be smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core; or, only the internal stress of the second pressure relief point may be greater than the internal stress of the valve body and greater than the internal stress of the valve core; or, only the strength of the material of the base may be smaller than the strength of the material of the valve body and less than the strength of the material of the valve core. The above method can also achieve that the pressure that the second pressure relief point 321 can withstand is smaller than the pressure that the valve body 1 can withstand and smaller than the pressure that the valve core 2 can withstand. The specific implementation method can be selected according to actual conditions.

[0048] See Figure 2As shown, in this embodiment, the water in the water outlet chamber 32 can be discharged from the valve cavity 13 in sequence through the second pressure relief point 321, the gap between the valve body 1 and the base 3, and the gap between the valve core 2 and the valve body 1, so that after the second pressure relief point 321 ruptures, the water in the water outlet chamber 32 can be discharged from the valve cavity 13 through the second pressure relief point 321. In other embodiments, it can also be configured that: the water in the water outlet chamber can be discharged from the valve cavity in sequence through the second pressure relief point, the gap between the valve body and the base, the gap between the valve core and the valve body, and the gap between the first body and the second body; or the water in the water outlet chamber can be discharged from the valve cavity in sequence through the second pressure relief point, the gap between the valve body and the base, and the gap between the first body and the second body, so that after the second pressure relief point 321 ruptures, the water in the water outlet chamber 32 can be discharged from the valve cavity 13 through the second pressure relief point 321. The specific pressure relief path from the second pressure relief point 321 to the outside of the valve cavity 13 is not limited to this.

[0049] In this embodiment, the base 3 is made of plastic materials such as PPO or POM, the valve body 1 is made of PPA or glass fiber modified material of PPA, and the valve core 2 is made of PPS or PA66 or glass fiber modified material of PA66. The specific implementation method is not limited to this.

[0050] In other embodiments, the internal stress at the first pressure relief point can be increased by only providing a surface with a certain curvature at the first pressure relief point; or the internal stress at the first pressure relief point can be increased by only providing a sharp angle formed by at least two surfaces at the first pressure relief point. Of course, increasing the internal stress at the first pressure relief point can also be achieved by other common methods that can increase internal stress, including but not limited to changes in the product structure or the product molding process, which are not listed here.

[0051] In other embodiments, the internal stress at the second pressure relief location can be increased by providing a surface with a certain curvature and a sharp angle formed between at least two surfaces; or the internal stress at the second pressure relief location can be increased by providing a surface with a certain curvature. Of course, increasing the internal stress at the second pressure relief location can also be achieved by other common methods that can increase internal stress, including but not limited to changes in the product structure or the product molding process, which are not listed here.

[0052] It should be noted that one or more first pressure relief points may be provided, and similarly, one or more second pressure relief points may be provided.

[0053] Example 2 (not shown)

[0054] This embodiment is basically the same as the first embodiment, and the only difference is that:

[0055] In this embodiment, the base has a water inlet chamber and multiple water outlet chambers, the number of water outlet channels matches the number of water outlet chambers, and each water outlet chamber is connected to each water outlet channel one by one. The valve core has a flow channel that can connect the water inlet chamber and the water outlet chamber. The valve core can control the water inlet chamber to switch and connect to each water outlet chamber, or control the water inlet chamber to not be connected to each water outlet chamber.

[0056] In this embodiment, the structures and principles of the remaining parts not described are consistent with those in the first embodiment and will not be described again here.

[0057] Example 3 (not shown)

[0058] This embodiment is basically the same as the first embodiment, and the only difference is that:

[0059] In this embodiment, the base has multiple water inlet chambers and multiple water outlet chambers. The number of water inlet channels matches the number of water inlet chambers, and the number of water outlet channels matches the number of water outlet chambers. Each water inlet chamber is connected to each water inlet channel one-to-one, and each water outlet chamber is connected to each water outlet channel one-to-one. The valve core can control any one or more water outlet chambers to be connected to any one or more water inlet chambers, or control each water outlet chamber to be disconnected from each water inlet chamber.

[0060] In this embodiment, the structures and principles of the remaining parts not described are consistent with those in the first embodiment and will not be described again here.

[0061] In other embodiments, the base may have one water inlet chamber and one water outlet chamber, and the connection and disconnection of the water inlet chamber and the water outlet chamber may be controlled by rotating the valve core; or the base may have multiple water inlet chambers and multiple water outlet chambers. It should be noted that the specific number of water inlet chambers and water outlet chambers provided on the base can be designed according to actual needs.

[0062] From the above description of the present invention, it can be seen that compared with the prior art, the overall structure of the present invention is simple. A base is detachably fixedly installed in the valve cavity, and the base has a water inlet cavity connected to the water inlet channel and a water outlet cavity connected to the water outlet channel. The cavity wall of the water inlet cavity has a first pressure relief point. The pressure that the first pressure relief point can withstand is less than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand, so that when the water in the water inlet cavity freezes at low temperature, the first pressure relief point can break first. After the first pressure relief point breaks, the water in the water inlet cavity can be discharged from the valve cavity through the first pressure relief point, avoiding the bursting of the valve core or valve body or the pipeline system connected to the valve body, so that during maintenance, only the base needs to be replaced, and there is no need to replace the valve body or valve core or the pipeline system connected to the valve body. Maintenance is convenient and the maintenance cost is low.

[0063] The above embodiments are only used to further illustrate an explosion-proof water outlet control device of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. An explosion-proof water outlet control device, characterized in that: The valve body comprises a valve cavity, a valve core detachably mounted in the valve cavity, and a base detachably fixedly mounted in the valve cavity, the base having a water inlet cavity and a water outlet cavity, the valve body having a water inlet channel communicating with the water inlet cavity and a water outlet channel communicating with the water outlet cavity, the valve core having a communication channel capable of communicating with the water inlet cavity and the water outlet cavity, the valve core being capable of controlling the connection or disconnection of the water inlet cavity and the water outlet cavity, the valve core partially extending out of the valve cavity for driving, the cavity wall of the water inlet cavity having a first pressure relief point, the pressure that the first pressure relief point can withstand is less than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand; after the first pressure relief point ruptures, water in the water inlet cavity can be discharged out of the valve cavity through the first pressure relief point; The valve body includes a first body and a second body detachably connected to the first body, the second body and the first body enclose the valve cavity, the base is provided in the first body and the bottom surface of the base abuts against the first body, and when the second body is fixedly connected to the first body, the valve core is pressed against the top surface of the base; The wall thickness of the first pressure relief point is smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core, and / or the internal stress of the first pressure relief point is greater than the internal stress of the valve body and greater than the internal stress of the valve core, and / or the strength of the material of the base is smaller than the strength of the material of the valve body and less than the strength of the material of the valve core, so that the pressure that the first pressure relief point can withstand is smaller than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand.

2. The explosion-proof water outlet control device according to claim 1, characterized in that: The cavity wall of the water outlet cavity has a second pressure relief point, and the pressure that the second pressure relief point can withstand is smaller than the pressure that the valve body can withstand and smaller than the pressure that the valve core can withstand; after the second pressure relief point ruptures, the water in the water outlet cavity can be discharged out of the valve cavity through the second pressure relief point.

3. The explosion-proof water outlet control device according to claim 1, characterized in that: The water inlet channel and the water outlet channel are both provided on the first body, the water inlet cavity passes through the top and bottom surfaces of the base, the water outlet cavity passes through the top and bottom surfaces of the base, the water inlet channel is sealedly connected to the inlet of the water inlet cavity, the outlet of the water inlet cavity can be sealedly connected to the inlet of the communicating channel, the outlet of the communicating channel can be sealedly connected to the inlet of the water outlet cavity, and the outlet of the water outlet cavity is sealedly connected to the water outlet channel.

4. The explosion-proof water outlet control device according to claim 1, characterized in that: The base has multiple water inlet chambers and one water outlet chamber, the number of the water inlet channels matches the number of the water inlet chambers, each of the water inlet chambers is connected to each of the water inlet channels in a one-to-one correspondence, and the valve core can control the water outlet chamber to be connected to any one or more of the water inlet chambers, or control the water outlet chamber to be disconnected from each of the water inlet chambers; Alternatively, the base has a water inlet cavity and a plurality of water outlet cavities, the number of the water outlet channels matches the number of the water outlet cavities, each of the water outlet cavities is connected to each of the water outlet channels in a one-to-one correspondence, and the valve core can control the water inlet cavity to switch and connect to each of the water outlet cavities, or control the water inlet cavity to be disconnected from each of the water outlet cavities; Alternatively, the base has multiple water inlet chambers and multiple water outlet chambers, the number of the water inlet channels matches the number of the water inlet chambers, the number of the water outlet channels matches the number of the water outlet chambers, each of the water inlet chambers is connected one-to-one with each of the water inlet channels, and each of the water outlet chambers is connected one-to-one with each of the water outlet channels, and the valve core can control any one or more of the water outlet chambers to be connected with any one or more of the water inlet chambers, or control each of the water outlet chambers to be disconnected from each of the water inlet chambers.

5. The explosion-proof water outlet control device according to any one of claims 1 to 4, characterized in that: The valve core includes a fixed portion fixed relative to the valve body and a movable portion rotatably arranged on the fixed portion, the movable portion having a valve stem extending out of the valve cavity for driving, and the water inlet cavity and the water outlet cavity are controlled to be connected or disconnected by rotating the movable portion; Alternatively, the valve core is rotatably disposed in the valve cavity, and the valve core has a valve stem, which extends out of the valve cavity for driving, and the water inlet cavity and the water outlet cavity are controlled to be connected or disconnected by rotating the valve core.

6. The explosion-proof water outlet control device according to claim 1, characterized in that: The internal stress of the first pressure relief portion is increased by providing a surface with a certain curvature and / or a sharp angle formed by at least two surfaces at the first pressure relief portion.

7. The explosion-proof water outlet control device according to claim 2, characterized in that: The wall thickness of the second pressure relief point is smaller than the wall thickness of the valve body and smaller than the wall thickness of the valve core, and / or the internal stress of the second pressure relief point is greater than the internal stress of the valve body and greater than the internal stress of the valve core, and / or the strength of the material of the base is smaller than the strength of the material of the valve body and less than the strength of the material of the valve core, so that the pressure that the second pressure relief point can withstand is smaller than the pressure that the valve body can withstand and less than the pressure that the valve core can withstand.

8. The explosion-proof water outlet control device according to claim 7, characterized in that: The internal stress of the second pressure relief portion is increased by providing a surface with a certain curvature and / or a sharp angle formed by at least two surfaces at the second pressure relief portion.

9. The explosion-proof water outlet control device according to claim 2, characterized in that: The wall thickness of the second pressure relief point is smaller than the wall thickness of other positions of the water outlet cavity.

10. The explosion-proof water outlet control device according to claim 1, characterized in that: The wall thickness of the first pressure relief portion is smaller than the wall thickness of the water inlet cavity at other positions.

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