Pressure relief structure and water outlet equipment

Abstract

The utility model relates to the technical field of water outlet equipment, and provides a pressure relief structure and water outlet equipment, which comprise a seat body, a hole channel, a pressure relief channel, a piston, a sealing ring and a reset mechanism, the hole channel is provided with an inlet used for being communicated with the water storage cavity. The piston is arranged in the hole channel in a sliding mode. When the thrust borne by the piston is larger than a preset value, the piston can move from a first position to a second position along the hole channel. The first position is located between the inlet and the second position; when the piston is located at the first position, the sealing ring seals a gap between the piston and the inner wall of the hole channel; when the piston is located at the second position, the hole channel at the upstream of the sealing ring is communicated with the hole channel at the downstream of the sealing ring through the pressure relief channel; the reset mechanism is used for pushing the piston back to the first position from the second position when the thrust borne by the piston is smaller than or equal to the preset value.

Description

Technical Field

[0001] The utility model belongs to the technical field of water outlet devices, and more specifically, relates to a pressure relief structure and a water outlet device. Background Art

[0002] Water outlet devices are very common in modern life and usually achieve water output through a water outlet device. A water storage cavity is usually provided in the water outlet device, and tap water is communicated with the water outlet device through the water storage cavity. The water storage cavity is usually filled with water. When the ambient temperature is lower than zero degree Celsius, the water in the water storage cavity is likely to freeze. Once the water in the water storage cavity freezes, since the density of ice is smaller than that of water, the freezing of the water in the water storage cavity will cause volume expansion. The ice block after volume expansion can easily cause the pressure in the water storage cavity to rise and the water storage cavity to be torn, and the tearing of the water storage cavity will cause damage to the water outlet device. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a pressure relief structure to solve the technical problem that the water storage cavity is torn due to the freezing of water in the existing technology.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a pressure relief structure, including:

[0005] A seat body;

[0006] A pore channel; the pore channel is opened on the seat body; the pore channel has an inlet for communicating with the water storage cavity;

[0007] A pressure relief channel; the pressure relief channel is arranged on the inner wall of the pore channel;

[0008] A piston; the piston slides in the pore channel; when the thrust received by the piston is greater than a predetermined value, the piston can move along the pore channel from a first position to a second position; the first position is between the inlet and the second position;

[0009] A sealing ring; the sealing ring is sleeved on the piston; when the piston is at the first position, the sealing ring seals the gap between the piston and the inner wall of the pore channel; when the piston is at the second position, the pore channel upstream of the sealing ring and the pore channel downstream of the sealing ring are communicated through the pressure relief channel;

[0010] A reset mechanism for pushing the piston back from the second position to the first position when the thrust received by the piston is less than or equal to the predetermined value; the reset mechanism is arranged on the seat body.

[0011] Further, the reset mechanism includes:

[0012] Limiting platform; the limiting platform is arranged on the inner wall of the channel, and the limiting platform is located on the sliding path of the piston; when the piston is in the first position, the piston abuts against the limiting platform;

[0013] Elastic structure for applying an elastic force to push the piston from the second position to the first position; the elastic structure is arranged on the seat body.

[0014] Further, the elastic structure includes: a spring arranged in the channel and a stopper detachably fixed on the seat body; in the extending direction of the channel, the limiting platform, the piston, the spring, and the stopper are arranged in sequence; the spring is clamped between the piston and the stopper; the spring can push the piston to abut against the limiting platform.

[0015] Further, the inner wall of the channel has a first clamping groove extending along the circumferential direction of the channel, and the stopper has a first convex platform that can be inserted into the first clamping groove; and / or

[0016] The inner wall of the channel has a second clamping groove extending along the extending direction of the channel, and the stopper has a second convex platform that can be inserted into the second clamping groove.

[0017] Further, the number of the first clamping grooves is multiple, and the number of the first convex platforms is multiple; the multiple first clamping grooves and the multiple first convex platforms correspond to each other one by one;

[0018] The number of the second clamping grooves is multiple, and the number of the second convex platforms is multiple; the multiple second clamping grooves and the multiple second convex platforms correspond to each other one by one.

[0019] Further, the pressure relief channel is: a pressure relief groove opened on the inner wall of the channel.

[0020] Further, the number of the pressure relief grooves is multiple.

[0021] Further, the multiple pressure relief grooves are arranged at intervals in sequence around the channel.

[0022] Further, the outer wall of the piston has an annular clamping groove; the sealing ring is clamped in the annular clamping groove.

[0023] The present utility model also proposes a water outlet device, including: the pressure relief structure, a water outlet device, and a water storage cavity arranged on the seat body; the water outlet device is communicated with the water storage cavity, and the water storage cavity is communicated with the inlet.

[0024] The beneficial effects of the pressure relief structure provided by the present utility model are as follows: Compared with the prior art, for the pressure relief structure provided by the present utility model, a pore passage is provided on the seat body, a piston is arranged in the pore passage, and the piston can be switched between a first position and a second position along the pore passage; the pore passage has an inlet for communicating with the water storage cavity, and the first position is located between the inlet and the second position; a sealing ring is sleeved on the piston; when the piston is located at the first position, the gap between the piston and the inner wall of the pore passage is sealed by the sealing ring, and the sealing ring blocks the water from flowing along the pore passage; when the piston is located at the second position, the pore passage upstream of the sealing ring is communicated with the pore passage downstream of the sealing ring through a pressure relief passage, so that the water in the pore passage upstream of the sealing ring can enter the pore passage downstream of the sealing ring through the pressure relief passage for delivery; when the water storage cavity is communicated with the inlet and the water in the water storage cavity freezes, the frozen water in the water storage cavity will expand in volume and cause the pressure in the water storage cavity to rise; when the thrust received by the piston is greater than a predetermined value, the piston can be pushed from the first position to the second position; when the piston reaches the second position, the water in the water storage cavity can be discharged outwards through the pressure relief passage and along the pore passage to reduce the pressure in the water storage cavity, avoiding the water storage cavity from bursting due to freezing, that is, the water upstream of the sealing ring can be discharged to the downstream of the sealing ring through the pressure relief passage, so that the water pressure in the water storage cavity can be reduced and the water storage cavity can be prevented from bursting; when the thrust received by the piston is less than or equal to the predetermined value, the reset mechanism can push the piston back from the second position to the first position. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an exploded schematic view of the pressure relief structure provided by an embodiment of the present utility model;

[0026] Figure 2 is Figure 1 the enlarged view at A in

[0027] Figure 3 is a perspective view of the seat body provided by an embodiment of the present utility model;

[0028] Figure 4 is Figure 3 the enlarged view at B in

[0029] Figure 5 is a perspective Figure 1 ;

[0030] Figure 6 is a perspective Figure 2 ;

[0031] Figure 7 is a perspective view of the spring provided by an embodiment of the present utility model;

[0032] Figure 8 is an exploded schematic view of the piston and the sealing ring provided by an embodiment of the present utility model;

[0033] Figure 9 The front view of the pressure relief structure provided by the embodiment of the present utility model;

[0034] Figure 10 is Figure 9 the sectional view taken along line C-C in

[0035] Figure 11 is Figure 10 the enlarged view at position D in (at this time, the piston moves to the first position in the pore passage);

[0036] Figure 12 is Figure 11 the sectional view of the piston moving from the first position to the second position in ;

[0037] Figure 13 The perspective view of the pressure relief structure provided by the embodiment of the present utility model (part of the stoppers are hidden);

[0038] Figure 14 is Figure 13 the enlarged view at position E in .

[0039] Among them, the reference numerals in the figure are as follows:

[0040] 1 - seat body; 11 - pore passage; 111 - inlet; 12 - pressure relief passage; 13 - water storage cavity; 141 - first card slot; 142 - second card slot; 21 - piston; 211 - annular card slot; 22 - sealing ring; 3 - reset mechanism; 31 - limiting platform; 32 - elastic structure; 321 - spring; 322 - stopper; 3221 - first boss; 3222 - second boss; D1 - first position; D2 - second position. Specific embodiments

[0041] It should be noted that the specific embodiments are only used to explain the present utility model and are not used to limit the present utility model.

[0042] It should be noted that in the description of the embodiments of the present application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B; herein, "and / or" is only a description of the relationship between associated objects, indicating that three relationships can exist, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. Among them, A and B can be singular or plural respectively.

[0043] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" or "connected on" another element, it can be directly connected to the other element or indirectly connected to the other element. When an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element.

[0044] It should be noted that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0045] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0046] It should be noted that the meaning of the term "plurality" is two or more, unless otherwise specifically defined.

[0047] Please refer to Figures 1 to 14 , and now the pressure relief structure provided by the present utility model will be described. The pressure relief structure includes: a seat body 1, a hole 11, a pressure relief passage 12, a piston 21, a sealing ring 22, and a reset mechanism 3; the hole 11 is formed in the seat body 1; the hole 11 has an inlet 111 for communicating with a water storage cavity 13; the pressure relief passage 12 is provided on the inner wall of the hole 11; the piston 21 slides in the hole 11; when the thrust received by the piston 21 is greater than a predetermined value, the piston 21 can move along the hole 11 from a first position D1 to a second position D2; the first position D1 is located between the inlet 111 and the second position D2; the sealing ring 22 is sleeved on the piston 21; when the piston 21 is located at the first position D1, the sealing ring 22 seals the gap between the piston 21 and the inner wall of the hole 11; when the piston 21 is located at the second position D2, the hole 11 upstream of the sealing ring 22 and the hole 11 downstream of the sealing ring 22 are communicated through the pressure relief passage 12; the reset mechanism 3 is used to push the piston 21 from the second position D2 back to the first position D1 when the thrust received by the piston 21 is less than or equal to the predetermined value; the reset mechanism 3 is provided on the seat body 1.

[0048] Thus, a duct 11 is provided on the seat body 1, and a piston 21 is disposed in the duct 11. The piston 21 can be switched between a first position D1 and a second position D2 along the duct 11. The duct 11 has an inlet 111 for communicating with the water storage chamber 13. The first position D1 is located between the inlet 111 and the second position D2. A sealing ring 22 is sleeved on the piston 21. When the piston 21 is located at the first position D1, the gap between the piston 21 and the inner wall of the duct 11 is sealed by the sealing ring 22, and the sealing ring 22 blocks the water from flowing along the duct 11. When the piston 21 is located at the second position D2, the duct 11 upstream of the sealing ring 22 communicates with the duct 11 downstream of the sealing ring 22 through a pressure relief passage 12, so that the water in the duct 11 upstream of the sealing ring 22 can enter the duct 11 downstream of the sealing ring 22 through the pressure relief passage 12 for delivery. When the water storage chamber 13 communicates with the inlet 111 and the water in the water storage chamber 13 freezes, the frozen water in the water storage chamber 13 expands in volume and causes the pressure in the water storage chamber 13 to increase. When the thrust received by the piston 21 is greater than a predetermined value, the piston 21 can be pushed from the first position D1 to the second position D2. When the piston 21 reaches the second position D2, the water in the water storage chamber 13 can be discharged outwards through the pressure relief passage 12 and along the duct 11 to reduce the pressure in the water storage chamber 13 and prevent the water storage chamber 13 from bursting due to freezing. That is, the water upstream of the sealing ring 22 can be discharged to the downstream of the sealing ring 22 through the pressure relief passage 12, so that the water pressure in the water storage chamber 13 can be reduced and the water storage chamber 13 can be prevented from bursting. When the thrust received by the piston 21 is less than or equal to the predetermined value, the reset mechanism 3 can push the piston 21 from the second position D2 back to the first position D1.

[0049] In one embodiment, the municipal water pressure is less than a predetermined value.

[0050] Further, please refer to Figures 1 to 14 , as a specific implementation manner of the pressure relief structure provided by the present utility model, the reset mechanism 3 includes: a limit platform 31 and an elastic structure 32. The limit platform 31 is disposed on the inner wall of the duct 11, and the limit platform 31 is located on the sliding path of the piston 21. When the piston 21 is located at the first position D1, the piston 21 abuts against the limit platform 31. The elastic structure 32 is used to apply an elastic force to the piston 21 to push the piston 21 from the second position D2 to the first position D1. The elastic structure 32 is disposed on the seat body 1. Thus, the elastic structure 32 can apply an elastic force to the piston 21 to push the piston 21 from the second position D2 to the first position D1. When the piston 21 is located at the first position D1, the piston 21 abuts against the limit platform 31, so that the piston 21 will not cross the first position D1 when moving from the second position D2 to the first position D1, which is convenient for the piston 21 to remain at the first position D1.

[0051] Further, please refer to Figures 1 to 14, as a specific implementation of the pressure relief structure provided by the present utility model, the elastic structure 32 includes: a spring 321 disposed in the duct 11 and a stopper 322 detachably fixed to the seat body 1; in the extending direction of the duct 11, the limiting platform 31, the piston 21, the spring 321, and the stopper 322 are sequentially arranged; the spring 321 is clamped between the piston 21 and the stopper 322; the spring 321 can push the piston 21 to abut against the limiting platform 31. Thus, a spring 321 is disposed between the piston 21 and the stopper 322, and under the elastic force of the spring 321, the spring 321 can push the piston 21 to move from the second position D2 to the first position D1.

[0052] Further, please refer to Figures 1 to 14 , as a specific implementation of the pressure relief structure provided by the present utility model, the inner wall of the duct 11 has a first card slot 141 extending along the circumferential direction of the duct 11, and the stopper 322 has a first boss 3221 that can be inserted into the first card slot 141. Thus, after the first boss 3221 is clamped in the first card slot 141, the stopper 322 is not easily slid out along the duct 11.

[0053] In one embodiment, the inner wall of the duct 11 has a second card slot 142 extending along the extending direction of the duct 11, and the stopper 322 has a second boss 3222 that can be inserted into the second card slot 142. Thus, after the second boss 3222 is clamped in the second card slot 142, the stopper 322 is not easily rotated around the duct 11.

[0054] Further, please refer to Figures 1 to 14 , as a specific implementation of the pressure relief structure provided by the present utility model, the number of the first card slots 141 is multiple, and the number of the first bosses 3221 is multiple; the multiple first card slots 141 and the multiple first bosses 3221 correspond to each other one by one.

[0055] In one embodiment, the number of the second card slots 142 is multiple, and the number of the second bosses 3222 is multiple; the multiple second card slots 142 and the multiple second bosses 3222 correspond to each other one by one.

[0056] Further, please refer to Figures 1 to 14 , as a specific implementation of the pressure relief structure provided by the present utility model, the pressure relief channel 12 is: a pressure relief groove opened on the inner wall of the duct 11. Thus, forming the pressure relief channel 12 is very simple, and only need to open a groove on the inner wall of the duct 11 to form the pressure relief groove.

[0057] Further, please refer to Figures 1 to 14 , as a specific implementation of the pressure relief structure provided by the present utility model, the number of the pressure relief grooves is multiple. Thus, the multiple pressure relief grooves can relieve pressure respectively.

[0058] Further, please refer to Figures 1 to 14 , as a specific embodiment of the pressure relief structure provided by the present utility model, a plurality of pressure relief grooves are arranged at intervals around the duct 11 in sequence. In this way, the pressure can be relieved through the pressure relief grooves at different positions in the circumferential direction of the duct 11.

[0059] Further, please refer to Figures 1 to 14 , as a specific embodiment of the pressure relief structure provided by the present utility model, an annular clamping groove 211 is provided on the outer wall of the piston 21; the sealing ring 22 is clamped in the annular clamping groove 211. In this way, the sealing ring 22 and the piston 21 are more firmly connected.

[0060] Please refer to Figures 1 to 14 , the present utility model also proposes a water outlet device, including: a pressure relief structure, a water outlet device, and a water storage cavity 13 provided on the seat body 1; the water outlet device is communicated with the water storage cavity 13, and the water storage cavity 13 is communicated with the inlet 111. In this way, due to the adoption of the above pressure relief structure, a duct 11 is provided on the seat body 1, the piston 21 is arranged in the duct 11, and the piston 21 can be switched between a first position D1 and a second position D2 along the duct 11; the duct 11 has an inlet 111 for communicating with the water storage cavity 13, and the first position D1 is located between the inlet 111 and the second position D2; a sealing ring 22 is sleeved on the piston 21; when the piston 21 is located at the first position D1, the gap between the piston 21 and the inner wall of the duct 11 is sealed by the sealing ring 22, and the sealing ring 22 blocks the water from flowing along the duct 11; when the piston 21 is located at the second position D2, the duct 11 upstream of the sealing ring 22 is communicated with the duct 11 downstream of the sealing ring 22 through the pressure relief channel 12, so that the water in the duct 11 upstream of the sealing ring 22 can enter the duct 11 downstream of the sealing ring 22 through the pressure relief channel 12 for transportation; when the water storage cavity 13 is communicated with the inlet 111 and the water in the water storage cavity 13 freezes, the water in the water storage cavity 13 freezes and expands in volume, causing the pressure in the water storage cavity 13 to increase; when the thrust received by the piston 21 is greater than a predetermined value, the piston 21 can be pushed from the first position D1 to the second position D2; when the piston 21 reaches the second position D2, the water in the water storage cavity 13 can be discharged outwards through the pressure relief channel 12 and along the duct 11 to reduce the pressure in the water storage cavity 13, avoiding the water storage cavity 13 from bursting due to freezing, that is, the water upstream of the sealing ring 22 can be discharged to the downstream of the sealing ring 22 through the pressure relief channel 12, so that the water pressure in the water storage cavity 13 can be reduced, avoiding the water storage cavity 13 from bursting; when the thrust received by the piston 21 is less than or equal to the predetermined value, the reset mechanism 3 can push the piston 21 from the second position D2 back to the first position D1.

[0061] In one embodiment, the water outlet device can be: a shower head or a faucet.

[0062] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A pressure relief structure, characterized in that: include: base(1); A hole (11); the hole (11) is provided on the seat body (1); the hole (11) has an inlet (111) for communicating with the water storage chamber (13); A pressure relief channel (12); the pressure relief channel (12) is arranged on the inner wall of the hole (11); A piston (21); the piston (21) is slidably disposed in the hole (11); when the thrust applied to the piston (21) is greater than a predetermined value, the piston (21) can move along the hole (11) from a first position (D1) to a second position (D2); the first position (D1) is located between the inlet (111) and the second position (D2); a sealing ring (22); the sealing ring (22) is sleeved on the piston (21); when the piston (21) is located at the first position (D1), the sealing ring (22) seals the gap between the piston (21) and the inner wall of the hole (11); when the piston (21) is located at the second position (D2), the hole (11) upstream of the sealing ring (22) and the hole (11) downstream of the sealing ring (22) are connected through the pressure relief channel (12); A reset mechanism (3) is used to push the piston (21) back from the second position (D2) to the first position (D1) when the thrust applied to the piston (21) is less than or equal to the predetermined value; the reset mechanism (3) is arranged on the seat body (1).

2. The pressure relief structure according to claim 1, characterized in that: The reset mechanism (3) comprises: a limit platform (31); the limit platform (31) is arranged on the inner wall of the hole (11), and the limit platform (31) is located on the sliding path of the piston (21); when the piston (21) is located at the first position (D1), the piston (21) abuts against the limit platform (31); The elastic structure (32) is used to apply an elastic force to the piston (21) to push it from the second position (D2) to the first position (D1); the elastic structure (32) is arranged on the seat body (1).

3. The pressure relief structure according to claim 2, characterized in that: The elastic structure (32) comprises: a spring (321) arranged in the hole (11) and a stopper (322) detachably fixed on the seat body (1); in the extension direction of the hole (11), the limit platform (31), the piston (21), the spring (321), and the stopper (322) are arranged in sequence; the spring (321) is clamped between the piston (21) and the stopper (322); and the spring (321) can push the piston (21) to abut against the limit platform (31).

4. The pressure relief structure according to claim 3, characterized in that: The inner wall of the hole (11) has a first slot (141) extending in the circumferential direction of the hole (11), and the stopper (322) has a first boss (3221) that can be inserted into the first slot (141); and / or The inner wall of the hole (11) is provided with a second slot (142) extending along the extension direction of the hole (11), and the stopper (322) is provided with a second boss (3222) which can be inserted into the second slot (142).

5. The pressure relief structure according to claim 4, characterized in that: The number of the first card slots (141) is multiple, and the number of the first bosses (3221) is multiple; the multiple first card slots (141) and the multiple first bosses (3221) correspond one to one; The number of the second card slots (142) is multiple, and the number of the second bosses (3222) is multiple; the multiple second card slots (142) and the multiple second bosses (3222) correspond one to one.

6. The pressure relief structure according to any one of claims 1 to 5, characterized in that: The pressure relief channel (12) is a pressure relief groove provided on the inner wall of the hole (11).

7. The pressure relief structure according to claim 6, characterized in that: The number of the pressure relief grooves is multiple.

8. The pressure relief structure according to claim 7, characterized in that: A plurality of pressure relief grooves are arranged in sequence and at intervals around the hole (11).

9. The pressure relief structure according to any one of claims 1 to 5, characterized in that: An annular groove (211) is provided on the outer wall of the piston (21); the sealing ring (22) is clamped in the annular groove (211).

10. Water outlet equipment, characterized in that: include: A pressure relief structure and a water outlet device as described in any one of claims 1 to 9, and a water storage chamber (13) arranged on the seat body (1); the water outlet device is connected to the water storage chamber (13), and the water storage chamber (13) is connected to the inlet (111).

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