Constant pressure valve and toilet

Abstract

The embodiment of the present application discloses a constant pressure valve, comprising a shell and an adjusting assembly, the shell is provided with a water inlet and a water outlet, and the adjusting assembly is arranged in the shell; the adjusting assembly comprises a valve core rod, a pressure bearing piece and an elastic piece, the shell is provided with a water passing hole; the pressure bearing piece is arranged on the valve core rod and located at one side of the water passing hole, a flow limiting part is arranged on the side wall of the valve core rod and located at the other side of the water passing hole, a butt joint part is arranged on the water outlet, and the elastic piece is clamped between the butt joint part and the pressure bearing piece; the pressure bearing piece is used for moving back and forth between the water passing hole and the water outlet, so as to drive the flow limiting part to move away from or close to the water passing hole. The embodiment of the present application also discloses a closestool provided with the constant pressure valve. By adopting the embodiment of the present application, the water outlet can be automatically maintained stable, good flushing effect is achieved, and the service life of the closestool is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bathroom equipment technology, and in particular to a constant pressure valve and a toilet. Background Technology

[0002] The water pressure range of existing toilets is 0.07MPa to 0.8MPa. When the water pressure exceeds 0.35MPa, the toilet may experience problems such as filter leakage, braided pipe joint leakage, and pressure-induced cracking of the flush valve, which reduces the service life of the toilet and causes significant losses to users or businesses.

[0003] To extend the lifespan of toilets, some toilets connect to external water supply via pressure regulating valves. While this prevents damage to internal components from high water pressure, it fails to increase water pressure when it's low, resulting in poor flushing performance and failing to meet national Class I or Class II water efficiency standards. Other toilets use pressure regulating valves with a flow restrictor and spring within the water flow channel. One end of the flow restrictor connects to an external adjustment cover, while the other end abuts against the inner wall of the water flow channel via the spring. Users can manually rotate the adjustment valve to change the inlet flow area, thus regulating water pressure. While this type of valve solves the problem of poor flushing performance, it requires manual adjustment to maintain a stable water flow, making it somewhat cumbersome. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a constant pressure valve and a toilet that can dynamically adjust the outlet pressure and outlet flow rate according to the water pressure. When the inlet water pressure is greater than 0.25MPa-0.35MPa, the constant pressure valve can stabilize the water pressure within 0.25MPa-0.35MPa, thereby automatically maintaining stable outlet flow. When the inlet water pressure is less than 0.25MPa-0.35MPa, the water passage diameter of the valve body does not affect the inlet flow rate, thus achieving both good flushing effect and ensuring the service life of the toilet.

[0005] To address the aforementioned technical problems, one embodiment of the present invention provides a constant pressure valve, comprising a housing and an adjusting assembly. The housing has an inlet and an outlet, and the adjusting assembly is disposed within the housing. The adjusting assembly includes a valve core rod, a pressure-bearing plate, and an elastic element. The housing has a water passage hole, and the valve core rod is disposed within the water passage hole. The pressure-bearing plate is disposed on the valve core rod and located on one side of the water passage hole. A flow-limiting portion is provided on the side wall of the valve core rod, located on the other side of the water passage hole. An abutment portion is provided on the outlet, and the elastic element is sandwiched between the abutment portion and the pressure-bearing plate. The pressure-bearing plate is used to move back and forth between the water passage hole and the outlet to drive the flow-limiting portion away from or towards the water passage hole.

[0006] As an improvement to the above solution, the flow-limiting part includes a frustum portion, the outer diameter of which gradually increases from one end toward the pressure plate to the other end.

[0007] As an improvement to the above solution, the maximum outer diameter of the frustum portion is greater than the inner diameter of the water passage hole.

[0008] As an improvement to the above solution, the constant pressure valve further includes a positioning component, which is detachably connected to the water inlet; the positioning component is provided with a positioning hole and a first through hole, the pressure bearing plate is provided at one end of the valve core rod, the other end of the valve core rod is provided in the positioning hole, and the first through hole is located on the periphery of the positioning hole.

[0009] As an improvement to the above solution, the pressure plate is a circular sheet, and the pressure plate is provided with a third through hole and a fourth through hole; the pressure plate is sleeved on one end of the valve core rod through the third through hole, and a plurality of the fourth through holes are provided around the third through hole; both ends of the fourth through hole are inclined in a clockwise or counterclockwise direction.

[0010] As an improvement to the above solution, the constant pressure valve further includes an adjusting component, which is detachably connected to the outlet. The adjusting component has a second through hole, and the abutting part is provided on the adjusting component and located around the second through hole. The abutting part is formed by a recess inward on one end of the adjusting component facing the pressure plate, and one end of the elastic element is located inside the abutting part.

[0011] As an improvement to the above solution, the pressure plate is provided with a positioning groove, and the other end of the elastic element is located in the positioning groove.

[0012] As an improvement to the above solution, the housing includes a first housing and a second housing; the water outlet is located at one end of the first housing, the other end of the first housing is detachably connected to one end of the second housing, the water inlet is located at the other end of the second housing, and the water passage hole is located on the end face of one end of the second housing.

[0013] As an improvement to the above solution, a limiting part is provided on the end face of one end of the second housing. The limiting part is located around the water passage hole and is used to intercept the pressure plate.

[0014] On the other hand, embodiments of the present invention also provide a toilet, including an angle valve, a water outlet device, and the aforementioned constant pressure valve; the water outlet device is connected to a water source through the angle valve, and the constant pressure valve is disposed inside the angle valve.

[0015] Implementing the embodiments of the present invention has the following beneficial effects:

[0016] When the constant pressure valve is in use, if the water pressure is too high, the pressure-bearing plate is pushed towards the outlet by the water pressure, thereby causing the flow-limiting part on the valve core rod to move closer to the water passage hole. This reduces the flow space between the flow-limiting part and the water passage hole, achieving the effect of controlling the water volume and reducing the water pressure. When the water pressure is too low, the pressure-bearing plate is pushed towards the inlet by the elastic force of the elastic element, thereby causing the flow-limiting part on the valve core rod to move away from the water passage hole. This increases the flow space between the flow-limiting part and the water passage hole, achieving the effect of increasing the water volume and increasing the water pressure. Therefore, by adopting the embodiment of the present invention, the water flow rate can be dynamically adjusted according to the water pressure, thereby automatically maintaining a stable water output, which not only has a good flushing effect but also ensures the service life of the toilet. Attached Figure Description

[0017] Figure 1 This is an exploded view of the constant pressure valve provided in an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of the constant pressure valve provided in an embodiment of the present invention from another angle;

[0019] Figure 3 This is a cross-sectional schematic diagram of the constant pressure valve provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the pressure-bearing plate in the constant pressure valve provided in the embodiment of the present invention;

[0021] Figure 5 This is a three-dimensional schematic diagram of the angle valve in the toilet provided in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the internal structure of the angle valve in the toilet provided in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0024] Combination Figures 1-3As shown, this embodiment of the invention provides a constant pressure valve, including a housing 1 and an adjusting assembly. The housing 1 has an inlet 121 and an outlet 111, and the adjusting assembly is disposed within the housing 1. The adjusting assembly includes a valve core rod 2, a pressure bearing plate 3, and an elastic element 4. The housing 1 has a water passage hole 122, and the valve core rod 2 is disposed within the water passage hole 122. The pressure bearing plate 3 is disposed on the valve core rod 2 and located on one side of the water passage hole 122. A flow limiting part 21 is provided on the side wall of the valve core rod 2, and the flow limiting part 21 is located on the other side of the water passage hole 122. An abutment part 61 is provided on the outlet 111, and the elastic element 4 is sandwiched between the abutment part 61 and the pressure bearing plate 3. The pressure bearing plate 3 is used to move back and forth between the water passage hole 122 and the outlet 111 to drive the flow limiting part 21 away from or towards the water passage hole 122. In this embodiment, the elastic element 4 is preferably a spring.

[0025] It should be noted that when the constant pressure valve is in use, if the water flow and water pressure are too high, the pressure-bearing plate 3 is pushed by the water pressure to move towards the outlet 111, thereby causing the flow-limiting part 21 on the valve core rod 2 to move closer to the water passage hole 122, thus reducing the flow space between the flow-limiting part 21 and the water passage hole 122, achieving the effect of controlling the water flow and reducing the water pressure; if the water flow and water pressure are too low, the pressure-bearing plate 3 is pushed by the elastic force of the elastic element 4 to move towards the inlet 121, thereby causing the flow-limiting part 21 on the valve core rod 2 to move away from the water passage hole 122, thus increasing the flow space between the flow-limiting part 21 and the water passage hole 122, achieving the effect of increasing the water flow and increasing the water pressure. In this embodiment, the constant pressure valve can dynamically adjust the outlet pressure and flow rate according to the water pressure. When the inlet water pressure is greater than 0.25MPa-0.35MPa, the constant pressure valve can stabilize the water pressure within 0.25MPa-0.35MPa, thereby automatically maintaining stable water flow. When the inlet water pressure is less than 0.25MPa-0.35MPa, the water passage diameter of the valve body does not affect the inlet flow rate, thus achieving both good flushing effect and ensuring the service life of the toilet.

[0026] Combination Figures 1-3 As shown, the flow-limiting part 21 includes a frustum 211, the outer diameter of which gradually increases from one end toward the pressure plate 3 to the other. When the frustum 211 approaches the water passage hole 122, the cross-sectional area of ​​the flow between the frustum 211 and the water passage hole 122 gradually decreases, thereby improving the water pressure control accuracy.

[0027] Furthermore, the maximum outer diameter of the frustum portion 211 is greater than the inner diameter of the water passage hole 122. When the water supply pressure exceeds the safe value range, the frustum portion 211 blocks the water passage hole 122, thereby preventing the continuous impact of water flow from damaging the pressure plate 3, the elastic element 4, and even the subsequent water circuit components, thus improving the service life of the constant pressure valve and the subsequent water circuit.

[0028] Combination Figures 1-3 As shown, the constant pressure valve further includes a positioning component 5, which is detachably connected to the inlet 121. The positioning component 5 has a positioning hole 51 and a first through hole 52. The pressure-bearing plate 3 is located at one end of the valve core rod 2, and the other end of the valve core rod 2 is located in the positioning hole 51. The first through hole 52 is located around the positioning hole 51. In this embodiment, the positioning hole 51 is used to limit the position of the valve core rod 2, so that the valve core rod 2 is always on the axis of the water passage 122, avoiding the valve core rod 2 from shifting under the impact of water flow (i.e., the flow limiting part 21 shifts), and ensuring the control accuracy of water pressure. The first through hole 52 serves as an inlet channel. In this embodiment, for ease of assembly, the positioning component 5 is preferably connected to the inlet 121 by a thread.

[0029] Combination Figures 1-4 As shown, the pressure-bearing plate 3 is a circular plate-shaped body, and it has a third through hole 32 and a fourth through hole 33. The pressure-bearing plate 3 is sleeved on one end of the valve core rod 2 through the third through hole 32, and several fourth through holes 33 are provided around the third through hole 32. Both ends of the fourth through holes 33 are inclined in a clockwise or counterclockwise direction. The pressure-bearing plate 3 is sleeved on the valve core rod 2 and is set as a circular plate-shaped body, which can increase the force-bearing area of ​​the pressure-bearing plate 3, thereby increasing the force of the water flow on the pressure-bearing plate 3 and preventing the pressure-bearing plate 3 from being difficult to move under the elastic force of the elastic element 4. Among them, the fourth through hole 33 serves as a water passage so as not to affect the water flow under low pressure. Both ends of the fourth through hole 33 are inclined in a clockwise or counterclockwise direction. When the water flows through the fourth through hole 33, it can push the pressure-bearing plate 3 to rotate, further increasing the force of the water flow on the pressure-bearing plate 3.

[0030] Combination Figures 1-3 As shown, to facilitate the assembly and replacement of the elastic element 4, the constant pressure valve also includes an adjusting element 6, which is detachably connected to the outlet 111. The adjusting element 6 is provided with a second through hole 62, which serves as a water outlet channel. The abutting part 61 is provided on the adjusting element 6 and located around the second through hole 62. The abutting part 61 is formed by a recess inward from one end of the adjusting element 6 facing the pressure plate 3, and one end of the elastic element 4 is located inside the abutting part 61.

[0031] Furthermore, the adjusting member 6 is threaded into the outlet 111. When the adjusting member 6 is screwed into the housing 1, the elastic force of the elastic member 4 on the pressure plate 3 increases (the compression degree of the elastic member 4 is enhanced). The elastic member 4 counteracts the force that pushes the valve core rod 2 towards the adjusting member 6 due to excessive water pressure, preventing the flow limiting part 21 from completely blocking the water passage 122 and losing its constant pressure function. Since the adjustment of the adjusting member 6 is a dynamic process, it can effectively eliminate the error of spring force and water pressure, and can obtain the constant pressure setting value more accurately. When the adjusting member 6 is screwed out of the housing 1, the elastic force of the elastic member 4 on the pressure plate 3 decreases (the compression degree of the elastic member 4 is reduced). Due to the elastic force of the elastic member 4, the flow limiting part 21 and the water passage 122 are in an open circuit state. The adjusting member 6 can adjust the constant pressure valve to a maximum water passage state without affecting the flushing water volume at low pressure. The water pressure range can be finely adjusted by dynamically adjusting the adjusting member 6. In this embodiment, the second through hole 62 is preferably an internal hexagonal through hole, allowing the user to screw the adjusting member 6 into or out of the outlet 111 using a hexagonal wrench. In other embodiments, the second through hole 62 can be a square hole, a plum blossom hole, or other shapes of through hole, and is not limited to these, as long as it is easy to screw in.

[0032] like Figure 1 As shown, the pressure plate 3 is provided with a positioning groove 31, and the other end of the elastic element 4 is disposed in the positioning groove 31. The positioning groove 31 cooperates with the abutment part 61 to limit the position of the elastic element 4, so as to prevent the elastic element 4 from being skewed and deformed during the expansion and contraction process, which would lead to a decrease in the control accuracy of water pressure. In this embodiment, the outer diameter of the pressure plate 3 is preferably larger than the inner diameter of the water passage hole 122.

[0033] Combination Figures 1-3 As shown, to facilitate the assembly and replacement of the valve core rod 2 or the pressure plate 3, the housing 1 includes a first housing 11 and a second housing 12; the outlet 111 is located at one end of the first housing 11, and the other end of the first housing 11 is detachably connected to one end of the second housing 12; the inlet 121 is located at the other end of the second housing 1; and the water passage hole 122 is located on the end face of one end of the second housing 1. In this embodiment, the first housing 11 is preferably connected to the second housing 12 by threads.

[0034] Secondly, a limiting part 123 is provided on the end face of one end of the second housing 12. The limiting part 123 is located around the water passage hole 122 and is used to intercept the pressure plate 3, so as to reserve a certain flow space between the pressure plate 3 and the water passage hole 122, and avoid the pressure plate 3 and the water passage hole 122 being too close to affect the water pressure.

[0035] Combination Figures 5-6 As shown, this embodiment of the invention also provides a toilet, including an angle valve 100, a water outlet device, and the aforementioned constant pressure valve 200; the water outlet device is connected to a water source through the angle valve 100, the constant pressure valve has a columnar structure, the inlet 121 and the outlet 111 are arranged opposite to each other so that the constant pressure valve 200 is located inside the angle valve 100, and plays a constant pressure role in the angle valve 100. In addition, since the adjusting member 6 is located at the port of the constant pressure valve, when the angle valve switch is closed and maintenance is required, it is only necessary to remove the filter of the angle valve 100, and the constant pressure valve can be easily maintained and the pressure adjusted.

[0036] In summary, by adopting the embodiments of the present invention, the water flow rate can be dynamically adjusted according to the water pressure, thereby automatically maintaining a stable water flow, which not only has a good flushing effect, but also ensures the service life of the toilet.

[0037] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A constant pressure valve, characterized in that, The device includes a housing and an adjustment assembly. The housing has an inlet and an outlet, with the inlet and outlet positioned opposite each other. The adjustment assembly is located inside the housing. The regulating assembly includes a valve core rod, a pressure plate, and an elastic element. The housing is provided with a water passage hole, and the valve core rod is disposed in the water passage hole. The pressure plate is disposed on the valve core rod and located on one side of the water passage hole. A flow limiting part is provided on the side wall of the valve core rod. The flow limiting part is located on the other side of the water passage hole. An abutment part is provided on the water outlet. The elastic element is sandwiched between the abutment part and the pressure plate. The pressure plate is used to move back and forth between the water passage and the water outlet to drive the flow limiting part away from or closer to the water passage; It also includes a positioning component, which has a positioning hole and a first through hole. The pressure plate is located at one end of the valve core rod, and the other end of the valve core rod is located inside the positioning hole. The first through hole is located on the periphery of the positioning hole.

2. The constant pressure valve according to claim 1, characterized in that, The flow-limiting part includes a frustum portion, the outer diameter of which gradually increases from one end toward the pressure plate to the other end, and the maximum outer diameter of the frustum portion is greater than the inner diameter of the water passage hole.

3. The constant pressure valve according to claim 1, characterized in that, The positioning element is detachably connected to the water inlet.

4. The constant pressure valve according to claim 1, characterized in that, The pressure-bearing plate is a circular sheet, and the pressure-bearing plate is provided with a third through hole and a fourth through hole; The pressure plate is sleeved on one end of the valve core rod through the third through hole, and a plurality of the fourth through holes are provided around the third through hole; Both ends of the fourth through hole are inclined in a clockwise or counterclockwise direction.

5. The constant pressure valve according to claim 1, characterized in that, It also includes an adjusting component, which is detachably connected to the outlet. The adjusting member is provided with a second through hole, and the abutting part is provided on the adjusting member and located around the second through hole; The abutting portion is formed by an inward recess on one end of the adjusting member facing the pressure plate, and one end of the elastic member is located inside the abutting portion.

6. The constant pressure valve according to claim 5, characterized in that, The pressure plate is provided with a positioning groove, and the other end of the elastic element is located in the positioning groove.

7. The constant pressure valve according to claim 1, characterized in that, The housing includes a first housing and a second housing; The water outlet is located at one end of the first housing, the other end of the first housing is detachably connected to one end of the second housing, and the water inlet is located at the other end of the second housing; The water passage is located on the end face of one end of the second housing.

8. The constant pressure valve according to claim 7, characterized in that, A limiting part is provided on the end face of one end of the second housing. The limiting part is located around the water passage hole and is used to intercept the pressure plate.

9. A toilet, characterized in that, Includes an angle valve, a water outlet device, and a constant pressure valve as described in any one of claims 1 to 8; The water outlet device is connected to the water source through the angle valve, and the constant pressure valve is located inside the angle valve.

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