Pressure relief safety valve of water storage type electric water heater

Abstract

The invention discloses a pressure relief safety valve of a water storage type electric water heater, and relates to the technical field of pressure relief valves, the pressure relief safety valve comprises a pressure relief valve body, the pressure relief valve body comprises a water inlet pipe, a fixing ring, a sealing spring, a first sealing plate, a first sealing gasket and a movable rod, and one side of the water inlet pipe fixedly communicates with a pressure relief pipe; a sealing mechanism is arranged in an inner cavity of the pressure relief pipe; the sealing mechanism comprises a sealing unit, and the sealing unit is arranged in an inner cavity of the pressure relief pipe; the sealing mechanism further comprises an auxiliary unit, according to the pressure relief safety valve of the water storage type electric water heater, the sealing unit and the auxiliary unit are used in cooperation, the purpose of improving the sealing effect can be achieved, a sealing gasket in the pressure relief channel can be attached more tightly, and therefore the sealing effect is improved; according to the water heater pressure detection device, the phenomenon that water drips when the pressure does not reach a certain value is effectively prevented, the sealing performance is guaranteed, meanwhile, the water heater pressure detection effect is guaranteed, and safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure relief valves, and particularly to a pressure relief and safety valve for a storage type electric water heater. Background Art

[0002] A pressure relief valve is a device used to protect the safety of a system. When an electric water heater is heating, the expansion of hot water will increase the pressure in the water storage tank. When the pressure reaches a certain value, the pressure relief valve will automatically relieve the pressure to prevent the inner tank of the water tank from exploding due to excessive pressure. Therefore, a pressure relief valve is needed for pressure relief protection.

[0003] When the pressure relief valve is in use, since the gasket in the pressure relief channel is prone to aging after long-term use, the fitting effect becomes poor, resulting in a decrease in the sealing effect. When the pressure does not reach a certain value, water is also likely to drip out from the pressure relief channel, reducing the sealing performance of the pressure relief valve during use, affecting the pressure detection effect, and reducing the safety. For this reason, we propose a pressure relief and safety valve for a storage type electric water heater.

[0004] Combining the above problems, we will find that the existing pressure relief and safety valves on the market are difficult to avoid the above-mentioned problems simultaneously during use. And even if they can be solved, external tools need to be used for cooperation, thus unable to achieve the desired effect. Therefore, we propose a pressure relief and safety valve for a storage type electric water heater. Summary of the Invention

[0005] The purpose of the present invention is to provide a pressure relief and safety valve for a storage type electric water heater to solve the problems mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A pressure relief and safety valve for a storage type electric water heater, including a pressure relief valve body, the pressure relief valve body includes a water inlet pipe, a sealing assembly is arranged in the inner cavity of the water inlet pipe, a fixing ring is movably sleeved on the surface of the sealing assembly, both ends of the fixing ring are fixedly connected to the inner cavity of the water inlet pipe, a pressure relief pipe is fixedly communicated with one side of the water inlet pipe, and a sealing mechanism is arranged in the inner cavity of the pressure relief pipe; The sealing mechanism includes a sealing unit, and the sealing unit is arranged in the inner cavity of the pressure relief pipe; The sealing mechanism further includes an auxiliary unit, the auxiliary unit is arranged on one side of the sealing unit, and the auxiliary unit is used in cooperation with the sealing unit; A blocking mechanism is arranged on one side of the sealing assembly.

[0007] Preferably, the sealing unit includes a limit ring fixedly connected to the inner cavity of the pressure relief pipe. There are two limit rings. A rotating plate is rotatably arranged between the two limit rings. Guide holes and rotating holes are respectively formed on the surface of the rotating plate. The number of the guide holes is four. A screw rod and a push rod are respectively arranged in the inner cavities of the guide holes and the rotating holes. One end of the screw rod is fixedly connected with a pressure relief sealing guide plate. Guide strips are fixedly connected to both sides of the pressure relief sealing guide plate. A guide groove for cooperating with the guide strips is formed in the inner cavity of the pressure relief pipe. A pressure relief sealing gasket is fixedly connected to one side of the pressure relief sealing guide plate. A V-shaped groove is formed on one side of the pressure relief sealing gasket.

[0008] Preferably, a pressing head is fixedly connected to one end of the push rod. A guide rod is fixedly connected to the surface of the push rod. A guide frame is movably sleeved on the surface of the guide rod. One side of the guide frame is fixedly connected to the surface of the pressure relief sealing guide plate.

[0009] Preferably, a pressing plate is fixedly connected to one end of the screw rod. A moving column is fixedly connected to one side of the pressing plate. A moving cylinder is movably sleeved on the surface of the moving column. A pressure relief spring is fixedly connected to the inner cavity of the moving cylinder. One end of the pressure relief spring is fixedly connected to the surface of the moving column. A first reset spring is movably sleeved on the surface of the moving cylinder. Both ends of the first reset spring are fixedly connected to the inner cavity of the moving cylinder and the pressure relief pipe respectively. One end of the moving cylinder penetrates to the outside of the pressure relief pipe. A lever is rotatably connected to one side of the moving cylinder through a rotating shaft.

[0010] Preferably, the auxiliary unit includes a telescopic sleeve. One end of the telescopic sleeve is fixedly connected to the surface of the water inlet pipe. The other end of the telescopic sleeve is fixedly connected with a ring. Inclined pressure holes are formed on the surface of the ring. The number of the inclined pressure holes is four. The inclined pressure holes are used in cooperation with the pressing head.

[0011] Preferably, a piston cylinder is fixedly embedded in the inner wall of the ring. An inflation piston is arranged in the inner cavity of the piston cylinder. A piston rod is fixedly connected to the surface of the inflation piston. The piston rod is used in cooperation with the pressing head. One end of the piston rod penetrates to the outside of the piston cylinder. A second reset spring is movably sleeved on the surface of the piston rod. Both ends of the second reset spring are fixedly connected to the surface of the piston rod and the piston cylinder respectively. An inflation pipe is fixedly communicated with one side of the piston cylinder.

[0012] Preferably, one side of the circular ring is fixedly connected with a V-shaped sealing airbag. One end of the air charging pipe penetrates to the outside of the circular ring and is fixedly communicated with one side of the V-shaped sealing airbag. The V-shaped sealing airbag is used in cooperation with the V-shaped groove. Four connecting cylinders are fixedly connected to the inner cavity of the telescopic sleeve. A pressing spring is fixedly connected to the inner cavity of the connecting cylinder. One end of the pressing spring is fixedly connected with a pressing head. One end of the pressing head penetrates to the outside of the connecting cylinder and is fixedly connected with one side of the circular ring.

[0013] Preferably, the blocking mechanism includes a telescopic rod. One end of the telescopic rod is fixedly connected to the inner cavity of the water inlet pipe, and the number of the telescopic rods is two.

[0014] Preferably, a pushing plate is arranged in the inner cavity of the water inlet pipe. One side of the pushing plate is fixedly connected to the telescopic end of the telescopic rod. A blocking gasket is fixedly connected to one side of the pushing plate.

[0015] Preferably, a third return spring is movably sleeved on the surface of the telescopic rod. Two ends of the third return spring are respectively fixedly connected to the inner cavity of the water inlet pipe and the surface of the pushing plate. One side of the sealing assembly is fixedly connected with a Z-shaped rod, and the Z-shaped rod is used in cooperation with the pushing plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the cooperation of the sealing unit and the auxiliary unit, the present invention can achieve the purpose of improving the sealing effect, enabling the gasket in the pressure relief channel to fit more tightly, thereby improving the sealing effect, effectively preventing the phenomenon of water dripping when the pressure does not reach a certain value, ensuring the sealing performance, and at the same time ensuring the effect of pressure detection of the water heater and improving the safety.

[0017] By setting the blocking mechanism, the present invention can achieve the purpose of preventing water leakage. When adding water to the water heater, it can effectively prevent the injected water pressure from being too large to push open the gasket of the pressure relief channel, thereby ensuring the sealing effect of the gasket of the pressure relief channel and preventing water leakage when injecting water into the water heater, and further ensuring the accuracy of pressure detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic sectional view of the present invention; Figure 3 is an exploded schematic diagram of the sealing unit of the present invention; Figure 4 is a partial sectional schematic view of the sealing unit of the present invention; Figure 5 is the present invention Figure 4 the enlarged view of A in; Figure 6 Exploded sectional view structure diagram of the sealing unit of the present invention; Figure 7 of the present invention Figure 6 Enlarged view of B in; Figure 8 Exploded sectional view structure diagram of the auxiliary unit of the present invention; Figure 9 of the present invention Figure 8 Enlarged view of C in; Figure 10 Exploded sectional view structure diagram of the water inlet pipe of the present invention.

[0019] In the figure: 1, pressure relief valve body; 101, pressure relief pipe; 102, lever; 103, water inlet pipe; 104, fixing ring; 105, sealing assembly; 2, sealing mechanism; 21, sealing unit; 2101, rotating plate; 2102, push rod; 2103, pressing plate; 2104, screw rod; 2105, pressure relief sealing guide plate; 2106, pressure relief sealing gasket; 2107, guide hole; 2108, guide frame; 2109, guide rod; 2110, moving cylinder; 2111, pressure relief spring; 2112, moving column; 2113, first return spring; 2114, pressing head; 2115, V-shaped groove; 2116, rotating hole; 2117, limiting ring; 2118, guide strip; 2119, guide groove; 22, auxiliary unit; 2201, telescopic sleeve; 2202, abutting head; 2203, V-shaped sealing airbag; 2204, connecting cylinder; 2205, circular ring; 2206, air charging pipe; 2207, piston cylinder; 2208, second return spring; 2209, piston rod; 2210, inclined surface pressing hole; 2211, abutting spring; 2212, air charging piston; 3, blocking mechanism; 301, Z-shaped rod; 302, third return spring; 303, blocking sealing gasket; 304, telescopic rod; 305, pushing plate. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1 - 10, the present invention provides a technical solution: a pressure relief safety valve for a storage type electric water heater, including a pressure relief valve body 1. The pressure relief valve body 1 includes a water inlet pipe 103. A sealing assembly 105 is arranged in the inner cavity of the water inlet pipe 103. A fixing ring 104 is movably sleeved on the surface of the sealing assembly 105. Both ends of the fixing ring 104 are fixedly connected to the inner cavity of the water inlet pipe 103. One side of the water inlet pipe 103 is fixedly communicated with a pressure relief pipe 101. A sealing mechanism 2 is arranged in the inner cavity of the pressure relief pipe 101; The sealing mechanism 2 includes a sealing unit 21, and the sealing unit 21 is arranged in the inner cavity of the pressure relief pipe 101; The sealing mechanism 2 further includes an auxiliary unit 22. The auxiliary unit 22 is arranged on one side of the sealing unit 21, and the auxiliary unit 22 is used in cooperation with the sealing unit 21.

[0022] As a further limitation of the present invention, the sealing unit 21 includes a limiting ring 2117. The limiting ring 2117 is fixedly connected to the inner cavity of the pressure relief pipe 101. The number of the limiting rings 2117 is two. A rotating plate 2101 is rotatably arranged between the two limiting rings 2117. A guiding hole 2107 and a rotating hole 2116 are respectively formed on the surface of the rotating plate 2101. The number of the guiding holes 2107 is four. A screw rod 2104 and a push rod 2102 are respectively arranged in the inner cavities of the guiding hole 2107 and the rotating hole 2116. One end of the screw rod 2104 is fixedly connected with a pressure relief sealing guiding plate 2105. Guide strips 2118 are fixedly connected to both sides of the pressure relief sealing guiding plate 2105. A guiding groove 2119 for using in cooperation with the guide strip 2118 is formed in the inner cavity of the pressure relief pipe 101. A pressure relief sealing gasket 2106 is fixedly connected to one side of the pressure relief sealing guiding plate 2105. A V-shaped groove 2115 is formed on one side of the pressure relief sealing gasket 2106.

[0023] One end of the push rod 2102 is fixedly connected with a pressing head 2114. A guiding rod 2109 is fixedly connected to the surface of the push rod 2102. A guiding frame 2108 is movably sleeved on the surface of the guiding rod 2109. One side of the guiding frame 2108 is fixedly connected to the surface of the pressure relief sealing guiding plate 2105. By arranging the guiding frame 2108, the guiding rod 2109 can be guided to ensure that the push rod 2102 can move stably. When the circular ring 2205 contacts and presses the pressure relief sealing gasket 2106 to cause deformation of the pressure relief sealing gasket 2106, at the same time, under the action of the pressure relief sealing guiding plate 2105, the circular ring 2205 and the pressure relief sealing gasket 2106 can be relatively pressed tightly, so as to ensure the tightness of the connection between the pressure relief sealing gasket 2106 and the circular ring 2205, thereby improving the sealing effect of the pressure relief sealing gasket 2106.

[0024] One end of the screw rod 2104 is fixedly connected with a pressing plate 2103. One side of the pressing plate 2103 is fixedly connected with a moving column 2112. The surface of the moving column 2112 is movably sleeved with a moving cylinder 2110. A pressure relief spring 2111 is fixedly connected to the inner cavity of the moving cylinder 2110. One end of the pressure relief spring 2111 is fixedly connected to the surface of the moving column 2112. The surface of the moving cylinder 2110 is movably sleeved with a first return spring 2113. Both ends of the first return spring 2113 are fixedly connected to the inner cavity of the moving cylinder 2110 and the pressure relief pipe 101 respectively. One end of the moving cylinder 2110 penetrates to the outside of the pressure relief pipe 101. One side of the moving cylinder 2110 is rotatably connected with a lever 102 through a rotating shaft. By setting the first return spring 2113, after pulling the moving cylinder 2110 through the lever 102 and then releasing it, it can drive the moving cylinder 2110 to reset, ensuring the sealing effect of the pressure relief gasket 2106 after manual pressure relief.

[0025] The auxiliary unit 22 includes a telescopic sleeve 2201. One end of the telescopic sleeve 2201 is fixedly connected to the surface of the water inlet pipe 103. The other end of the telescopic sleeve 2201 is fixedly connected with a ring 2205. The surface of the ring 2205 is provided with inclined surface pressure holes 2210. The number of the inclined surface pressure holes 2210 is four. The inclined surface pressure holes 2210 are used in cooperation with the lower pressing head 2114. By setting the telescopic sleeve 2201, it is ensured that the ring 2205 can move, so that it can be in closer contact with the pressure relief gasket 2106, thereby improving the sealing effect of the pressure relief gasket 2106.

[0026] A piston cylinder 2207 is fixedly embedded in the inner wall of the ring 2205. An inflation piston 2212 is arranged in the inner cavity of the piston cylinder 2207. A piston rod 2209 is fixedly connected to the surface of the inflation piston 2212. The piston rod 2209 is used in cooperation with the lower pressing head 2114. One end of the piston rod 2209 penetrates to the outside of the piston cylinder 2207. The surface of the piston rod 2209 is movably sleeved with a second return spring 2208. Both ends of the second return spring 2208 are fixedly connected to the surface of the piston rod 2209 and the piston cylinder 2207 respectively. One side of the piston cylinder 2207 is fixedly communicated with an inflation pipe 2206.

[0027] One side of the circular ring 2205 is fixedly connected with a V-shaped sealing airbag 2203. One end of the air charging pipe 2206 penetrates to the outside of the circular ring 2205 and is fixedly communicated with one side of the V-shaped sealing airbag 2203. The V-shaped sealing airbag 2203 is used in cooperation with the V-shaped groove 2115. Four connecting cylinders 2204 are fixedly connected to the inner cavity of the telescopic sleeve 2201. A pressing spring 2211 is fixedly connected to the inner cavity of the connecting cylinder 2204. One end of the pressing spring 2211 is fixedly connected with a pressing head 2202. One end of the pressing head 2202 penetrates to the outside of the connecting cylinder 2204 and is fixedly connected with one side of the circular ring 2205. By providing the V-shaped sealing airbag 2203, after the circular ring 2205 contacts the pressure relief sealing gasket 2106, the sealing effect of the pressure relief sealing gasket 2106 can be further ensured, making it not easy to leak water, and improving the sealing performance.

[0028] By providing the combined use of the sealing unit 21 and the auxiliary unit 22, the purpose of improving the sealing effect can be achieved, enabling the sealing gasket in the pressure relief channel to fit more tightly, thereby improving the sealing effect, effectively preventing water leakage when the pressure does not reach a certain value, ensuring the sealing performance, and at the same time ensuring the effect of detecting the pressure of the water heater, improving the safety.

[0029] The specific implementation of this embodiment is as follows: When the pressure relief valve body 1 is installed on an electric water heater for use, when the pressure in the electric water heater is too high, the pressure will push the pressure relief sealing gasket 2106 and the pressure relief sealing guide plate 2105, causing the screw rod 2104 to move in the rotation hole 2116 to push the pressing plate 2103, so that the moving column 2112 squeezes the pressure relief spring 2111 and makes it contract. As a result, the rotating plate 2101 rotates within the limiting ring 2117, and the push rod 2102 moves within the guide hole 2107. Under the action of the guide rod 2109 and the guide frame 2108, the lower pressing head 2114 moves out of the inclined surface pressing hole 2210, so that the pressure relief sealing gasket 2106 can move away from the circular ring 2205, allowing water to enter the pressure relief pipe 101 and be discharged through the pressure relief port at the bottom of the pressure relief pipe 101, thereby achieving pressure relief. After the pressure relief is completed, the pressure relief spring 2111 resets, causing the moving column 2112 to reset, enabling the pressing plate 2103 to push the screw rod 2104, moving the pressure relief sealing guide plate 2105. At the same time, the guide strip 2118 moves within the guide groove 2119 to ensure the stability of the pressure relief sealing guide plate 2105, making the pressure relief sealing gasket 2106 contact and squeeze the circular ring 2205. Through the tension of the tightening spring 2211, the tightening head 2202 applies pressure to the circular ring 2205, causing the circular ring 2205 and the pressure relief sealing guide plate 2105 to simultaneously squeeze the pressure relief sealing gasket 2106, causing it to deform. When the screw rod 2104 moves back, the rotating plate 2101 rotates back through the rotation hole 2116, and the push rod 2102 moves within the guide hole 2107. At the same time, under the guidance of the guide rod 2109 and the guide frame 2108, the lower pressing head 2114 can be inserted into the inclined surface pressing hole 2210, thereby squeezing the inclined surface pressing hole 2210, causing the circular ring 2205 to move further. At the same time, due to the deformation of the pressure relief sealing gasket 2106, the lower pressing head 2114 can be fully inserted into the inclined surface pressing hole 2210, enabling the pressure relief sealing gasket 2106 to be in close contact and sealed with the circular ring 2205. When the pressure relief sealing gasket 2106 contacts the circular ring 2205, the V-shaped sealing airbag 2203 enters the V-shaped groove 2115. Since the V-shaped sealing airbag 2203 enters in a semi-inflated state and will not fit tightly with the V-shaped groove 2115, after the lower pressing head 2114 enters the inclined surface pressing hole 2210, it can squeeze the piston rod 2209, causing the second return spring 2208 to contract, enabling the piston rod 2209 to push the inflation piston 2212 to move within the piston cylinder 2207, and inflating the V-shaped sealing airbag 2203 through the inflation pipe 2206 to make the V-shaped sealing airbag 2203 saturated, so that it can fit tightly with the V-shaped groove 2115, further ensuring the sealing between the pressure relief sealing gasket 2106 and the circular ring 2205 and effectively preventing leakage.

[0030] Embodiment 2: Please refer to Figures 1 - 10, the present invention provides a technical solution: a pressure relief safety valve for a storage type electric water heater, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0031] As a further limitation of the present invention, a blocking mechanism 3 is provided on one side of the sealing assembly 105; The blocking mechanism 3 includes a telescopic rod 304. One end of the telescopic rod 304 is fixedly connected to the inner cavity of the water inlet pipe 103. The number of the telescopic rods 304 is two. By providing the telescopic rod 304, the push plate 305 can be supported, so that the Z-shaped rod 301 can push it, and the blocking gasket 303 can block the water inlet channel of the pressure relief pipe 101, which can prevent the water pressure injected into the electric water heater through the water inlet pipe 103 from being too large and pushing open the pressure relief gasket 2106, preventing the water outlet phenomenon not caused by pressure relief, and improving the sealing effect.

[0032] A push plate 305 is arranged in the inner cavity of the water inlet pipe 103. One side of the push plate 305 is fixedly connected to the telescopic end of the telescopic rod 304, and a blocking gasket 303 is fixedly connected to one side of the push plate 305.

[0033] A third return spring 302 is movably sleeved on the surface of the telescopic rod 304. Two ends of the third return spring 302 are respectively fixedly connected to the inner cavity of the water inlet pipe 103 and the surface of the push plate 305. A Z-shaped rod 301 is fixedly connected to one side of the sealing assembly 105. The Z-shaped rod 301 is used in cooperation with the push plate 305. By providing the third return spring 302, after the water injection is completed, the push plate 305 can be reset, so that the normal pressure relief can be ensured, and thus the pressure relief effect is guaranteed.

[0034] By providing the blocking mechanism 3, the purpose of preventing water leakage can be achieved. When adding water to the water heater, it can effectively prevent the water pressure injected from being too large and pushing open the gasket of the pressure relief channel, thereby ensuring the sealing effect of the gasket of the pressure relief channel and preventing water leakage when injecting water into the water heater, and further ensuring the accuracy of pressure detection.

[0035] The specific implementation manner of this embodiment is as follows: When it is necessary to add water to the electric water heater, the water first pushes the sealing assembly 105 to open the sealing assembly 105, so that the water can enter the water inlet pipe 103 and then be transported into the electric water heater to achieve water addition to the electric water heater. When the sealing assembly 105 rises, the Z-shaped rod 301 rises accordingly, thereby pushing the push plate 305, causing the push plate 305 to squeeze the telescopic rod 304 and the third return spring 302, so that the push plate 305 can drive the blocking gasket 303 to move and block the water inlet channel of the pressure relief pipe 101, thereby ensuring that no high pressure is generated during water injection to push the pressure relief gasket 2106, effectively preventing the water pressure in the water inlet pipe 103 from being too high to push open the pressure relief gasket 2106, enabling the pressure relief gasket 2106 to seal more effectively, and thus ensuring the effect of normal pressure detection. After the water addition is completed, the third return spring 302 can reset, so that the push plate 305 drives the blocking gasket 303 to move out of the water inlet channel of the pressure relief pipe 101, ensuring normal pressure relief.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief safety valve for a storage type electric water heater, comprising a pressure relief valve body (1), characterized in that: The pressure relief valve body (1) comprises a water inlet pipe (103), the inner cavity of the water inlet pipe (103) is provided with a sealing assembly (105), a surface movable sleeve of the sealing assembly (105) is provided with a fixing ring (104), both ends of the fixing ring (104) are fixedly connected to the inner cavity of the water inlet pipe (103), one side of the water inlet pipe (103) is fixedly connected to a pressure relief pipe (101), and the inner cavity of the pressure relief pipe (101) is provided with a sealing mechanism (2); The sealing mechanism (2) comprises a sealing unit (21), and the sealing unit (21) is arranged in the inner cavity of the pressure relief pipe (101); The sealing mechanism (2) further comprises an auxiliary unit (22), wherein the auxiliary unit (22) is arranged on one side of the sealing unit (21), and the auxiliary unit (22) is used in conjunction with the sealing unit (21); A blocking mechanism (3) is provided on one side of the sealing component (105).

2. A pressure relief safety valve for a storage type electric water heater according to claim 1, characterized in that: The sealing unit (21) comprises a limiting ring (2117), wherein the limiting ring (2117) is fixedly connected to the inner cavity of the pressure relief pipe (101), the limiting ring (2117) is provided in two numbers, a rotating plate (2101) is rotatably arranged between the two limiting rings (2117), the surface of the rotating plate (2101) is respectively provided with a guide hole (2107) and a rotating hole (2116), the guiding holes (2107) are provided in four numbers, and the inner cavities of the guiding holes (2107) and the rotating holes (2116) are respectively provided with a spiral rod. (2104) and a push rod (2102), one end of the spiral rod (2104) is fixedly connected to a pressure relief sealing guide plate (2105), both sides of the pressure relief sealing guide plate (2105) are fixedly connected to guide strips (2118), the inner cavity of the pressure relief pipe (101) is provided with a guide groove (2119) used in conjunction with the guide strip (2118), one side of the pressure relief sealing guide plate (2105) is fixedly connected to a pressure relief sealing gasket (2106), and one side of the pressure relief sealing gasket (2106) is provided with a V-shaped groove (2115).

3. A pressure relief safety valve for a storage type electric water heater according to claim 2, characterized in that: One end of the push rod (2102) is fixedly connected to a pressure head (2114), the surface of the push rod (2102) is fixedly connected to a guide rod (2109), the surface of the guide rod (2109) is movably sleeved with a guide frame (2108), and one side of the guide frame (2108) is fixedly connected to the surface of a pressure relief sealing guide plate (2105).

4. A pressure relief safety valve for a storage type electric water heater according to claim 3, characterized in that: One end of the spiral rod (2104) is fixedly connected to a pressure plate (2103), one side of the pressure plate (2103) is fixedly connected to a moving column (2112), a moving cylinder (2110) is movably sleeved on the surface of the moving column (2112), a pressure relief spring (2111) is fixedly connected to the inner cavity of the moving cylinder (2110), one end of the pressure relief spring (2111) is fixedly connected to the surface of the moving column (2112), a first return spring (2113) is movably sleeved on the surface of the moving cylinder (2110), two ends of the first return spring (2113) are respectively fixedly connected to the moving cylinder (2110) and the inner cavity of the pressure relief pipe (101), one end of the moving cylinder (2110) passes through the outer side of the pressure relief pipe (101), and one side of the moving cylinder (2110) is rotatably connected to a shifting rod (102) via a rotating shaft.

5. A pressure relief safety valve for a storage type electric water heater according to claim 3, characterized in that: The auxiliary unit (22) comprises a telescopic sleeve (2201), one end of the telescopic sleeve (2201) being fixedly connected to the surface of the water inlet pipe (103), the other end of the telescopic sleeve (2201) being fixedly connected to a circular ring (2205), the surface of the circular ring (2205) being provided with inclined surface pressure holes (2210), the number of the inclined surface pressure holes (2210) being four, and the inclined surface pressure holes (2210) being used in conjunction with a lower pressure head (2114).

6. A pressure relief safety valve for a storage type electric water heater according to claim 5, characterized in that: A piston cylinder (2207) is fixedly embedded on the inner wall of the circular ring (2205), an inner cavity of the piston cylinder (2207) is provided with an inflation piston (2212), a piston rod (2209) is fixedly connected to the surface of the inflation piston (2212), the piston rod (2209) is used in conjunction with a pressure head (2114), one end of the piston rod (2209) passes through the outside of the piston cylinder (2207), a second return spring (2208) is movably sleeved on the surface of the piston rod (2209), two ends of the second return spring (2208) are respectively fixedly connected to the piston rod (2209) and the surface of the piston cylinder (2207), and one side of the piston cylinder (2207) is fixedly connected to an inflation tube (2206).

7. A pressure relief safety valve for a storage type electric water heater according to claim 6, characterized in that: A V-shaped sealing airbag (2203) is fixedly connected to one side of the circular ring (2205), one end of the inflation tube (2206) passes through the outside of the circular ring (2205) and is fixedly connected to one side of the V-shaped sealing airbag (2203), the V-shaped sealing airbag (2203) is used in conjunction with the V-shaped groove (2115), the inner cavity of the telescopic sleeve (2201) is fixedly connected to four connecting tubes (2204), the inner cavity of the connecting tube (2204) is fixedly connected to a tightening spring (2211), one end of the tightening spring (2211) is fixedly connected to a tightening head (2202), one end of the tightening head (2202) passes through the outside of the connecting tube (2204) and is fixedly connected to one side of the circular ring (2205).

8. A pressure relief safety valve for a storage type electric water heater according to claim 1, characterized in that: The blocking mechanism (3) comprises a telescopic rod (304), one end of the telescopic rod (304) being fixedly connected to the inner cavity of the water inlet pipe (103), and the number of the telescopic rods (304) is two.

9. A pressure relief safety valve for a storage type electric water heater according to claim 8, characterized in that: The inner cavity of the water inlet pipe (103) is provided with a push plate (305), one side of the push plate (305) is fixedly connected to the telescopic end of the telescopic rod (304), and one side of the push plate (305) is fixedly connected to a blocking sealing pad (303).

10. A pressure relief safety valve for a storage type electric water heater according to claim 9, characterized in that: A third return spring (302) is movably sleeved on the surface of the telescopic rod (304), and two ends of the third return spring (302) are respectively fixedly connected to the inner cavity of the water inlet pipe (103) and the surface of the push plate (305). A Z-shaped rod (301) is fixedly connected to one side of the sealing assembly (105), and the Z-shaped rod (301) is used in conjunction with the push plate (305).

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