Adjustable pressure reducing angle valve

Abstract

The application is an adjustable pressure reducing angle valve, which comprises a valve body, a water inlet, a water outlet, a valve cap and a screw rod, and a movable core and a fixed core are arranged between the water inlet and the water outlet; the movable core is axially movably sleeved outside the fixed core, a second water passing hole communicating with the water outlet is arranged on the peripheral wall of the movable core, and a reset member is arranged between the end of the movable core and the screw rod; the fixed core is fixed in the center of a water inlet plate of the water inlet, a first water passing hole communicating with the water inlet is arranged on the water inlet plate, and a water blocking boss is arranged on the peripheral wall of the fixed core; the screw rod and the corresponding one-way pull rod are arranged, so that the adjusting function can be realized, the manual closing ability can be achieved under the condition of low water pressure, the fixed core plays the roles of closing and limiting the flow of the movable core and reducing the influence of the water flow of the water inlet on the movable core, the response speed and recovery speed of the pressure reducing process are improved, the accuracy of the pressure reducing efficiency is improved, and the structure of the angle valve is more compact as a whole.

Description

Technical Field

[0001] This invention belongs to the field of valves and refers to an adjustable pressure reducing angle valve. Background Technology

[0002] Angle valves, like ball valves, gate valves, and butterfly valves, are used for water shut-off in pipelines. The difference lies in the fact that the outlet and inlet of an angle valve form a 90-degree angle. Angle valves are also called triangular valves, angle valves, or bend valves because the pipeline forms a 90-degree bend at the angle valve. They are commonly used in plumbing and electrical installations in the renovation industry, typically connecting to water-using appliances such as toilets, hot and cold water faucets, and water heaters. They are important water pipe fittings.

[0003] When the existing angle valve is opened, it only allows water to flow and stops, without a pressure stabilizing function. When the pressure of the water entering the inlet pipe is relatively high, it will cause continuous high pressure to the pipes and water-using equipment connected to the end of the angle valve, such as braided hoses, water heaters, toilets, and dishwashers. Prolonged high water pressure will cause the end pipes and water-using equipment to be overloaded, thereby reducing the lifespan of the pipes and end water-using equipment.

[0004] Most water appliances are subject to momentary overpressure operation, known as the "water hammer effect." This occurs when a valve is suddenly closed inside a water pipe with a smooth inner wall, causing the water to generate a very high instantaneous pressure due to inertia. Prolonged impact can lead to pipe leaks or damage to the water appliance. When the valve of our point-of-use water appliances is closed, this "water hammer effect" occurs momentarily, causing a significant impact on the end-user water supply, resulting in damage and disruption.

[0005] Therefore, a pressure-reducing structure with a simplified structure, convenient installation and production, and stable operation is needed to regulate the pressure of the water flow. When the water pressure exceeds a certain amount, it can prevent overload pressure output, reduce the output pressure, and protect the angle valve and the connected terminal pipes and water-using equipment, ensuring safe and reliable operation.

[0006] Therefore, to overcome the aforementioned difficulties, the practical solution is to install pressure stabilizing valves and pressure reducing valves separately at the point of entry into the household pipeline to reduce the pressure of water flowing to the terminal. However, existing pressure stabilizing and pressure reducing devices generally require pre-set installation space before installation, are installed separately at the point of entry, and are costly and complex to install. Once the pipeline is laid, adding pressure stabilizing and pressure reducing devices later becomes difficult. In addition, most users lack awareness of water pressure overload and water hammer effects, and may overlook this device, causing potential hazards. Angle valves are essential pipe connectors at the end of a household, used to connect the main pipe to water-using equipment, and are indispensable. Currently, most angle valves on the market lack pressure adjustment functions and cannot flexibly adjust according to water pressure; therefore, this invention will propose a solution to the above-mentioned technical problems.

[0007] Therefore, the present invention will propose solutions to the above-mentioned technical problems. Summary of the Invention

[0008] The purpose of this invention is to provide an adjustable pressure-reducing angle valve that can adjust the pressure tolerance limit of the angle valve and its terminals to address safety issues caused by water pressure, such as the "water hammer effect." Furthermore, the valve features a more rational and streamlined structure, simpler installation, and significantly improved performance. Its response speed and adjustment precision are also more efficient and accurate.

[0009] The objective of this invention is achieved as follows: An adjustable pressure reducing angle valve includes a valve body, an inlet, an outlet, a valve cap, and a lead screw. A pressure reducing core is provided between the inlet and the outlet, and the pressure reducing core includes a movable core and a fixed core.

[0010] The movable core is axially movable and sleeved on the outside of the fixed core. A second water passage hole communicating with the water outlet is provided on the peripheral side wall, and a reset member is provided between the end and the lead screw.

[0011] The fixed core is fixed in the center of the water inlet plate of the water inlet. The water inlet plate is provided with a first water passage hole communicating with the water inlet. The peripheral side wall of the fixed core is provided with a water-blocking protrusion.

[0012] A water passage is formed between the peripheral wall of the movable core and the peripheral wall of the fixed core. When the water pressure in the outlet is greater than the reset pressure of the reset member, the movable core moves to close with the water-blocking protrusion to block the water flow in the water passage. When the water pressure in the outlet is less than the reset pressure of the reset member, the movable core moves to separate from the water-blocking protrusion to open the water passage and allow the water to flow.

[0013] In the aforementioned adjustable pressure reducing angle valve, a one-way pull rod is provided between the end of the movable core and the lead screw. When the valve cap is screwed inward, the distance between the end and the lead screw decreases, compressing the reset component and increasing the elasticity. When the valve cap is screwed outward, the distance between the end and the lead screw increases, opening the reset component and reducing the elasticity. The lead screw can gradually pull the movable core and the water-blocking boss to close through the one-way pull rod.

[0014] In the aforementioned adjustable pressure reducing angle valve, the one-way pull rod is integrally connected to the end of the movable core.

[0015] In the aforementioned adjustable pressure reducing angle valve, the one-way pull rod and the lead screw are fixed together by screws.

[0016] In the aforementioned adjustable pressure reducing angle valve, a limiting step corresponding to the valve body is formed on the outer peripheral sidewall of the movable core.

[0017] In the aforementioned adjustable pressure reducing angle valve, a water passage step is formed on the inner peripheral sidewall of the movable core. Whether the water passage step and the water blocking protrusion are closed determines whether water flows through the water passage.

[0018] In the aforementioned adjustable pressure reducing angle valve, a sealing ring is provided on the periphery of the end of the movable core and on the side of the limiting step facing the water inlet. A sealing ring is provided between the water-blocking boss and the periphery of the movable core, forming a seal during movement.

[0019] In the aforementioned adjustable pressure reducing angle valve, the fixed core is fixed to the inlet plate by threads.

[0020] In the aforementioned adjustable pressure reducing angle valve, the fixed core is fixed to the inlet plate by a snap ring.

[0021] In the aforementioned adjustable pressure reducing angle valve, the reset element is a compression spring.

[0022] The outstanding and beneficial technical effects of this invention compared to the prior art are:

[0023] The adjustable pressure reducing angle valve of this invention is equipped with a lead screw and a corresponding one-way pull rod, which can realize the adjustment function and has the ability to be manually closed when the water pressure is low. It is equipped with a movable core and a fixed core. The fixed core plays the role of closing and limiting the flow with the movable core and reducing the impact of the water flow at the inlet on the movable core, thereby improving the response speed and recovery speed of the pressure reducing process, as well as improving the accuracy of pressure reducing efficiency. Moreover, the overall structure of the angle valve is more streamlined. Attached Figure Description

[0024] Figure 1 This is one of the cross-sectional views of the adjustable pressure reducing angle valve of the present invention.

[0025] Figure 2 This is the second cross-sectional view of the adjustable pressure reducing angle valve of the present invention.

[0026] Figure 3 This is a schematic diagram of the internal structure of the adjustable pressure reducing angle valve of the present invention.

[0027] Figure 4 This is a schematic diagram of the fixed core structure of the adjustable pressure reducing angle valve of the present invention.

[0028] Figure 5 This is a right view of the adjustable pressure reducing angle valve of the present invention.

[0029] Figure 6 This is a three-dimensional structural schematic diagram of the adjustable pressure reducing angle valve of the present invention.

[0030] Figure 7 This is a schematic diagram of the second fixing method for the fixing core of the adjustable pressure reducing angle valve of the present invention.

[0031] The meaning of the labels in the diagram:

[0032] 1-Valve body; 2-Inlet; 21-Inlet plate; 210-First water passage hole; 3-Outlet; 4-Valve cap;

[0033] 5-Lead screw; 6-Pressure-reducing core; 61-Moving core; 62-Fixed core; 610-Second water passage hole;

[0034] 611 - End; 612 - Limiting step; 613 - Water passage step; 621 - Water blocking boss; 7 - Reset component;

[0035] 8 - One-way tie rod; 58 - Screw; 9 - Sealing ring; 1200 - Water passage; 622 - Thread;

[0036] 623-Clapper ring; QQ dot. Detailed Implementation

[0037] The present invention will be further described below with reference to specific embodiments:

[0038] like Figure 1-7 As shown, an adjustable pressure reducing angle valve includes a valve body 1, an inlet 2, an outlet 3, a valve cap 4, and a lead screw 5. A pressure reducing core 6 is provided between the inlet 2 and the outlet 3. The pressure reducing core 6 includes a movable core 61 and a fixed core 62.

[0039] The movable core 61 is axially movable and sleeved on the outside of the fixed core 62. A second water passage hole 610 communicating with the water outlet 3 is provided on the peripheral side wall, and a reset member 7 is provided between the end 611 and the lead screw 5.

[0040] The fixed core 62 is fixed in the center of the water inlet plate 21 of the water inlet 2. The water inlet plate 21 is provided with a first water passage hole 210 communicating with the water inlet 2. The peripheral side wall of the fixed core 62 is provided with a water blocking protrusion 621.

[0041] A water passage 1200 is formed between the peripheral wall of the movable core 61 and the peripheral wall of the fixed core 62. When the water pressure in the outlet 3 is greater than the reset pressure of the reset member 7, the movable core 61 moves to close with the water-blocking protrusion 621 to block the water flow in the water passage 1200. When the water pressure in the outlet 3 is less than the reset pressure of the reset member 7, the movable core 61 moves to separate from the water-blocking protrusion 621 to open and allow the water flow in the water passage 1200 to pass through.

[0042] In this technical solution, the pressure-reducing core 6 is installed inside the valve body 1 pipe, located between the inlet 2 and the outlet 3. The entire pressure regulating device has a relatively simple structure, is not externally placed on the side of the pipe, and reduces the overall size. See the attached instruction manual. Figure 6Existing pressure stabilizing devices generally employ a pressure stabilizing and regulating structure on the side wall of the inlet 2, such as a diaphragm and spring combination structure set outside the pipe side wall. This results in an overall structure that is not simple enough and occupies a large space. The pressure reducing core 6 is divided into a movable core 61 and a fixed core 62. The movable core 61 can reciprocate under the combined action of the water pressure at the outlet 3 and the reset pressure of the reset component 7. The reset component 7 refers to the part that generates different reset rebound pressures as the position moves. It is mainly made of springs, but elastic balls, sealed air cavities, etc. can also be used. The fixed core 62 plays the role of closing and limiting the flow with the movable core 61 and reducing the influence of the water flow at the inlet 2 on the movable core 61. The influence refers to the following: when the outlet 3 valve is closed, the pressure in the outlet 3 pipe increases, the movable core 61 moves to the left, and the movable core 61 seals with the fixed core 62. At this time, the movable core 61 is not affected by the water pressure at the inlet 2. When the end valve is opened, the movable core 61 will pop out immediately when the pipeline pressure is released, responding quickly and unaffected by the pressure at the inlet 2. After installing the fixed core 62, and interlocking the movable core 61 and fixed core 62 to form a water passage 1200, refer to the attached instruction manual. Figure 2 Point Q is the point where the movable core 61 is subjected to water flow impact after the fixed core 62 is set. Compared with the impact on the entire end face, it greatly reduces the impact of water flow impact from the inlet 2, improves the response speed and recovery speed, and reduces the accuracy of pressure reduction efficiency.

[0043] Operating principle: The water flow direction is as follows: inlet 2 → first water passage 210 → water passage 1200 → whether the movable core 61 and the water-blocking protrusion 621 are closed depends on the water pressure at the outlet → second water passage 610 → outlet 3. (See the instruction manual for details.) Figure 1 and attached Figure 2 Two forms; the bold black curve in the image indicates the direction of water flow.

[0044] Appendix Figure 1 When the valve at outlet 3 is closed, the pressure inside the outlet 3 pipe increases. At this time, the water pressure thrust at the end of the movable core 61 is greater than the reset pressure of the reset piece 7. The movable core 61 is located at the leftmost end or slightly to the left. The movable core 61 and the water-blocking protrusion 621 are in a closed state, preventing the water flow from passing through the water passage 1200, thus reducing the pressure in outlet 3 to a stable range.

[0045] Appendix Figure 2When the valve at outlet 3 is opened, the pressure inside the outlet 3 pipe decreases. At this time, the water pressure thrust at the end of the movable core 61 is less than the reset pressure of the reset piece 7. The movable core 61 is located at the far right end or slightly to the right. The movable core 61 and the water-blocking protrusion 621 are in the open state, allowing the water to flow through the water passage 1200, and allowing the water to flow out stably while ensuring the safety of the angle valve.

[0046] Furthermore, a one-way pull rod 8 is provided between the end 611 of the movable core 61 and the lead screw 5. The one-way pull rod 8 can move within the lead screw 5. When the valve cap 4 is screwed inward, the distance between the end 611 and the lead screw 5 decreases, and the compression reset piece 7 increases the elasticity. When the valve cap 4 is screwed outward, the distance between the end 611 and the lead screw 5 increases, and the opening reset piece 7 reduces the elasticity. The lead screw 5 can gradually pull the movable core 61 and the water-blocking boss 621 to close through the one-way pull rod 8. When the water pressure is extremely low, the water pressure may not be enough to push the movable core 61 to close with the water-blocking boss 621, and it will not be able to seal the water. Therefore, the one-way pull rod 8 is provided. By screwing the valve cap 4 to the left, when it is screwed to the leftmost part, the movable core 61 can be pulled directly through the one-way pull rod 8. Even if the water pressure is too low, it will not affect the closure of the water passage 1200, providing a means to manually close the water passage 1200.

[0047] Furthermore, the one-way pull rod 8 is integrally connected to the end 611 of the movable core 61, and the one-way pull rod 8 is fixed to the lead screw 5 by screws 58.

[0048] Furthermore, a limiting step 612 corresponding to the valve body 1 is formed on the outer peripheral sidewall of the movable core 61, and a water-passing step 613 is formed on the inner peripheral sidewall of the movable core 61. Whether the water-passing step 613 and the water-blocking protrusion 621 are closed determines whether water passes through the water passage 1200. This technical solution is described in the appendix to the instruction manual. Figure 1 and attached Figure 2 and appendix Figure 7 The inner and outer sides of the peripheral wall of the movable core 61 are both formed with steps. The two steps have different functions. The limiting step 612 restricts the movable core 61 from moving infinitely to the right, while the water-passing step 613 allows water to flow through when the water-blocking protrusion 621 is misaligned with the movable core 61.

[0049] Furthermore, the fixing core 62 is fixed to the water inlet plate 21 by threads 622. See the attached instruction manual for the specific implementation details. Figure 1 and 2 .

[0050] Furthermore, the fixing core 62 is fixed to the water inlet plate 21 by a retaining spring 623. See the attached instruction manual for the specific implementation details. Figure 7 .

[0051] Furthermore, a sealing ring 9 is provided on the periphery of the end 611 of the movable core 61 and on the side of the limiting step 612 facing the water inlet 2. A sealing ring 9 is provided between the water-blocking protrusion 621 and the peripheral wall of the movable core 61, forming a seal during movement. The arrangement of the sealing ring is shown in the attached drawings of the specification.

[0052] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An adjustable pressure reducing angle valve, comprising a valve body (1), an inlet (2), and an outlet (3); characterized in that: Includes a valve cap (4) and a lead screw (5). A pressure reducing core (6) is provided between the water inlet (2) and the water outlet (3). The pressure reducing core (6) includes a movable core (61) and a fixed core (62). The movable core (61) is axially movable and sleeved on the outside of the fixed core (62). A second water passage hole (610) communicating with the water outlet (3) is provided on the peripheral side wall, and a reset member (7) is provided between the end (611) and the lead screw (5). The fixed core (62) is fixed in the center of the water inlet plate (21) of the water inlet (2). The water inlet plate (21) is provided with a first water passage hole (210) communicating with the water inlet (2). The fixed core (62) is provided with a water blocking boss (621) on its peripheral sidewall. A water passage (1200) is formed between the peripheral wall of the movable core (61) and the peripheral wall of the fixed core (62). When the water pressure in the outlet (3) is greater than the reset pressure of the reset member (7), the movable core (61) moves to close with the water-blocking boss (621) to block the water flow in the water passage (1200). When the water pressure in the outlet (3) is less than the reset pressure of the reset member (7), the movable core (61) moves to separate from the water-blocking boss (621) to open and allow the water flow in the water passage (1200).

2. The adjustable pressure reducing angle valve according to claim 1, characterized in that: A one-way pull rod (8) is provided between the end (611) of the movable core (61) and the lead screw (5). When the valve cap (4) is screwed inward, the distance between the end (611) and the lead screw (5) is reduced, the compression reset piece (7) increases the elasticity, and the one-way pull rod (8) can move inside the lead screw (5). When the valve cap (4) is screwed outward, the distance between the end (611) and the lead screw (5) is increased, the opening reset piece (7) reduces the elasticity, and the lead screw (5) can be gradually pulled towards the movable core (61) and the water-blocking boss (621) to close through the one-way pull rod (8).

3. The adjustable pressure reducing angle valve according to claim 2, characterized in that: The one-way tie rod (8) is integrally connected to the end (611) of the movable core (61).

4. The adjustable pressure reducing angle valve according to claim 2 or 3, characterized in that: The one-way tie rod (8) and the lead screw (5) are connected and fixed by screws (58).

5. The adjustable pressure reducing angle valve according to claim 1 or 2, characterized in that: The outer peripheral sidewall of the movable core (61) has a limiting step (612) corresponding to the valve body (1).

6. The adjustable pressure reducing angle valve according to claim 5, characterized in that: A water-passing step (613) is formed on the inner peripheral sidewall of the movable core (61). Whether the water-passing step (613) and the water-blocking protrusion (621) are closed determines whether the water passage (1200) is open to water.

7. The adjustable pressure reducing angle valve according to claim 5, characterized in that: The end (611) of the movable core (61) is provided with a sealing ring (9) on the periphery of the end (611) and the limiting step (612) facing the water inlet (2). A sealing ring (9) is provided between the water-blocking boss (621) and the periphery of the movable core (61) to form a seal during the movement.

8. The adjustable pressure reducing angle valve according to claim 1, 2, or 3, characterized in that: The fixed core (62) is fixed to the water inlet plate (21) by threads (622).

9. The adjustable pressure reducing angle valve according to claim 1, 2, or 3, characterized in that: The fixed core (62) is fixed to the water inlet plate (21) by a snap ring (623).

10. The adjustable pressure reducing angle valve according to claim 1, 2, or 3, characterized in that: The reset component (7) is a compression spring or a compression air chamber.

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