Internal pressure relief type mechanical one-way valve

Abstract

The utility model relates to the technical field of internal pressure relief control type mechanical one-way valves, and discloses an internal pressure relief type mechanical one-way valve which comprises a water inlet connecting pipe, a reversing assembly is arranged in the water inlet connecting pipe, one end of the water inlet connecting pipe is connected with a water outlet connecting pipe, the reversing assembly is used for water flow reversing, and the water outlet connecting pipe is connected with a water pump. Two flow directions are achieved through the reversing assembly, the multiple functions of forward flow circulation, reverse flow stopping and blocking and reverse circulation are achieved, one valve has multiple purposes, cost is saved, and the product cost performance is improved. One end of the valve element of the pressure relief valve penetrates through the through hole and extends into the water inlet connecting pipe, and the valve element of the pressure relief valve is convenient to use. The movement direction of the pressure release valve element is limited through the through hole, and the situation that the pressure release valve element cannot be used due to the fact that the movement direction of the pressure release valve element is incorrect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of internal pressure relief controlled mechanical one-way valves, in particular to a mechanical one-way valve with internal pressure relief. Background Art

[0002] An internal pressure relief mechanical check valve is a device that controls the flow rate and inlet and outlet of a single port. It achieves reverse flow by controlling the pressure of the liquid in the reverse direction, thereby achieving the goal of pressure relief.

[0003] Existing one-way valve designs all feature a single structure for forward (inlet) flow and reverse (outlet) flow blocking. These valves fail to achieve the multifunctional function of forward flow, reverse flow blocking, and reverse flow. Therefore, these designs lack competitive advantages over similar products and fail to meet customer needs.

[0004] Therefore, the above problems are solved by a mechanical one-way valve with internal pressure relief. Summary of the Invention

[0005] The purpose of the present utility model is to provide a mechanical one-way valve with internal pressure relief to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: comprising an inlet connecting pipe, a reversing assembly is provided inside the inlet connecting pipe, one end of the inlet connecting pipe is connected to a water outlet connecting pipe, and the reversing assembly is used for reversing water flow.

[0007] Preferably, the reversing assembly includes a first valve core, which is located inside the water inlet connecting pipe. A pressure relief valve housing is provided inside the first valve core. The interior of the pressure relief valve housing is hollow, and a pressure relief valve core is provided inside the pressure relief valve housing.

[0008] Preferably, a through hole is formed at one end of the first valve core close to the water inlet connecting pipe, and water flow holes are formed around the through hole.

[0009] Preferably, the pressure relief valve core is located in the pressure relief valve housing and passes through the through hole, and one end of the pressure relief valve core is located inside the water inlet connecting pipe.

[0010] Preferably, a pressure relief spring is provided on the outer circumferential surface of the pressure relief valve core, and the pressure relief spring is located inside the pressure relief valve housing.

[0011] Preferably, a first boss is provided at one end of the first valve core close to the water inlet connecting pipe, and the water inlet connecting pipe is divided into two parts. The water inlet connecting pipe includes a connecting head and an installation pipe, and the first valve core is installed inside the installation pipe. The diameter of the first valve core is larger than the diameter of the connecting pipe, and the water outlet connecting pipe is connected to the installation pipe, and the first boss of the first valve core is located inside the connecting head.

[0012] Preferably, a second boss is provided at the other end of the first valve core, a first spring is clamped on the second boss, and the other end of the first spring is connected to the water outlet connecting pipe.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. The utility model realizes flow in two directions through the reversing component, realizes the multifunctional functions of forward flow circulation, reverse flow cut-off blocking and reverse circulation, one valve has multiple uses, saves costs and improves product cost performance.

[0015] 2. One end of the valve core of the pressure relief valve of the utility model passes through the through hole and extends to the interior of the water inlet connecting pipe. The through hole limits the movement direction of the valve core of the pressure relief valve, thereby preventing the valve core from being unusable due to incorrect movement direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the internal explosion structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the first valve core structure of the utility model.

[0019] Figure 4 This is a schematic diagram of the forward water flow activity of the utility model.

[0020] Figure 5 This is a schematic diagram of the reverse water flow activity of the utility model.

[0021] Figure 6 This is a schematic diagram of flow blocking of the utility model.

[0022] In the figure: 1. Water inlet connecting pipe; 2. Water outlet connecting pipe; 3. First valve core; 301. Through hole; 302. Water flow hole; 4. Pressure relief valve housing; 5. Pressure relief valve core; 6. Pressure relief spring; 7. First spring. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] An internal pressure relief mechanical check valve is a device that controls the flow rate and inlet and outlet of a single port. It achieves reverse flow by controlling the pressure of the liquid in the reverse direction, thereby achieving the goal of pressure relief.

[0025] Existing one-way valve designs all feature a single structure for forward (inlet) flow and reverse (outlet) flow blocking. These valves fail to achieve the multifunctional function of forward flow, reverse flow blocking, and reverse flow. Therefore, these designs lack competitive advantages over similar products and fail to meet customer needs.

[0026] The utility model provides Figures 1 to 6 The mechanical one-way valve with internal pressure relief shown includes an inlet connecting pipe 1, a reversing component is provided inside the inlet connecting pipe 1, one end of the inlet connecting pipe 1 is connected to the outlet connecting pipe 2, and the reversing component is used for reversing the water flow.

[0027] When in use, the water inlet connecting pipe 1 is used to connect to an external water source, and the external water source flows to the water outlet connecting pipe 2 through the reversing component, or the water source flows to the water outlet connecting pipe 2 and flows to the water inlet connecting pipe 1 through the reversing component.

[0028] The reversing component realizes the flow in two directions, realizing the forward flow circulation, reverse flow cut-off blocking and reverse flow multi-function. One valve has multiple uses, saving costs and improving product cost performance.

[0029] The reversing assembly includes a first valve core 3, which is located inside the water inlet connecting pipe 1. A pressure relief valve housing 4 is provided inside the first valve core 3. The interior of the pressure relief valve housing 4 is hollow, and a pressure relief valve core 5 is provided inside the pressure relief valve housing 4.

[0030] When in use, the first valve core 3 is used to switch the forward water flow, and the internal pressure relief valve core 5 of the first valve core 3 is used to switch the reverse water flow. The pressure relief valve core 5 is located inside the pressure relief valve housing 4, and the pressure relief valve core 5 moves inside the pressure relief valve housing 4.

[0031] A through hole 301 is formed at one end of the first valve core 3 close to the water inlet connecting pipe 1 , and water flow holes 302 are formed around the through hole 301 .

[0032] When in use, the through hole 301 is used for the pressure relief valve core 5 to penetrate and move, and the water flow hole 302 is connected to the interior of the pressure relief valve housing 4, and the water flow hole 302 is used for reverse water flow to pass through.

[0033] The pressure relief valve core 5 is located in the pressure relief valve housing 4 and passes through the through hole 301 . One end of the pressure relief valve core 5 is located inside the water inlet connecting pipe 1 .

[0034] When in use, one end of the pressure relief valve core 5 extends through the through hole 301 to the interior of the water inlet connecting pipe 1. The through hole 301 limits the movement direction of the pressure relief valve core 5 to prevent the pressure relief valve core 5 from being unusable due to incorrect movement direction.

[0035] A pressure relief spring 6 is provided on the outer circumferential surface of the pressure relief valve core 5 , and the pressure relief spring 6 is located inside the pressure relief valve housing 4 .

[0036] When in use, the pressure relief valve housing 4 is provided with a water inlet away from the water inlet connecting pipe 1, the pressure relief valve spool 5 compresses the pressure relief spring 6, the pressure relief valve spool 5 moves toward the water inlet connecting pipe 1, the pressure relief valve spool 5 is away from the water inlet, and the water inlet is opened to facilitate reverse flow of water. The water flows through the water inlet to the water flow hole 302, and then flows to the water inlet connecting pipe 1 and flows out, completing the reverse water flow.

[0037] A first boss is provided at one end of the first valve core 3 close to the water inlet connecting pipe 1. The water inlet connecting pipe 1 is divided into two parts. The water inlet connecting pipe 1 includes a connecting head and a mounting pipe. The first valve core 3 is installed inside the mounting pipe. The diameter of the first valve core 3 is larger than the diameter of the connecting pipe. The water outlet connecting pipe 2 is connected to the mounting pipe. The first boss of the first valve core 3 is located inside the connecting head.

[0038] When in use, the first boss of the first valve core 3 is used to withstand the pressure of the water flow. The water flows toward the first boss, and the first valve core 3 blocks the connector close to one end of the water inlet connecting pipe 1, so that the water entering the water inlet connecting pipe 1 presses the end face of the first valve core 3, causing the first valve core 3 to move, and then the water flows toward the side of the first valve core 3, completing the forward water flow.

[0039] The other end of the first valve core 3 is provided with a second boss, and the second boss is clamped with a first spring 7 . The other end of the first spring 7 is connected to the water outlet connecting pipe 2 .

[0040] During use, when the first valve core 3 moves, the first valve core 3 squeezes the first spring 7 to allow the first valve core 3 to have space to move. One end of the first spring 7 is sleeved on the second boss at the other end of the first valve core 3. The second boss is used to clamp the first spring 7 to prevent the first spring 7 from deflecting.

[0041] How it works

[0042] When forward flow is required, water flows in from the water inlet connecting pipe 1, and the water flow squeezes the first valve core 3, causing the first valve core 3 to move. When the first valve core 3 moves, it squeezes the first spring 7, and the first valve core 3 moves toward the water outlet connecting pipe 2, causing the first valve core 3 to move inside the connecting pipe of the water inlet connecting pipe 1. Then, the water flows toward the side of the first boss, and then flows toward the water outlet connecting pipe 2 through the end face of the first valve core 3, completing the forward flow.

[0043] When reverse flow is required, water flows into the water outlet connecting pipe 2, the water flow squeezes the pressure relief valve core 5, and the pressure relief valve core 5 squeezes the pressure relief spring 6, so that the pressure relief valve core 5 moves inside the pressure relief valve housing 4, opening the water inlet of the pressure relief valve housing 4, and the water flows through the water inlet to the inside of the pressure relief valve housing 4, and then flows through the water flow hole 302 to the water inlet connecting pipe 1, completing the reverse flow.

[0044] Example 1

[0045] Forward flow: When the flow reaches the valve core opening pressure, the flow flows out from the outlet to achieve the forward flow function; Figure 4 shown.

[0046] Example 2

[0047] Reverse flow (liquid flow from the water outlet), when the liquid flow pressure reaches the opening pressure of the pressure relief valve core 5, assuming 350KPa, the liquid flow flows out from the forward direction, realizing the reverse pressure relief function, such as Figure 5 shown.

[0048] Example 3

[0049] Reverse flow (liquid flow from the water outlet), when the liquid flow pressure does not reach the opening pressure of the pressure relief valve core 5 (assuming 350KPa), the one-way valve is in a state of no flow blocking, such as Figure 6 shown.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mechanical one-way valve with internal pressure relief, characterized in that: It comprises a water inlet connecting pipe (1), a reversing assembly is provided inside the water inlet connecting pipe (1), one end of the water inlet connecting pipe (1) is connected to a water outlet connecting pipe (2), and the reversing assembly is used for reversing the water flow; The reversing assembly comprises a first valve core (3), the first valve core (3) being located inside the water inlet connecting pipe (1), a pressure relief valve housing (4) being provided inside the first valve core (3), the interior of the pressure relief valve housing (4) being hollow, and a pressure relief valve core (5) being provided inside the pressure relief valve housing (4).

2. A mechanical one-way valve with internal pressure relief according to claim 1, characterized in that: A through hole (301) is provided at one end of the first valve core (3) close to the water inlet connecting pipe (1), and water flow holes (302) are provided around the through hole (301).

3. A mechanical one-way valve with internal pressure relief according to claim 2, characterized in that: The pressure relief valve core (5) is located in the pressure relief valve housing (4) and passes through the through hole (301). One end of the pressure relief valve core (5) is located inside the water inlet connecting pipe (1).

4. A mechanical one-way valve with internal pressure relief according to claim 3, characterized in that: A pressure relief spring (6) is provided on the outer circumferential surface of the pressure relief valve core (5), and the pressure relief spring (6) is located inside the pressure relief valve housing (4).

5. The mechanical one-way valve with internal pressure relief according to claim 4, characterized in that: A first boss is provided at one end of the first valve core (3) close to the water inlet connecting pipe (1); the water inlet connecting pipe (1) is divided into two parts, the water inlet connecting pipe (1) comprises a connector and a mounting pipe, the first valve core (3) is mounted inside the mounting pipe, the diameter of the first valve core (3) is larger than the diameter of the connecting pipe, the water outlet connecting pipe (2) is connected to the mounting pipe, and the first boss of the first valve core (3) is located inside the connector.

6. The mechanical one-way valve with internal pressure relief according to claim 5, characterized in that: The other end of the first valve core (3) is provided with a second boss, the second boss is clamped with a first spring (7), and the other end of the first spring (7) is connected to the water outlet connecting pipe (2).

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