Ceramic valve to prevent water hammer

Abstract

The present invention discloses a ceramic valve for preventing water hammer, comprising a valve housing, a valve stem, a driving seat, a movable valve disc, a fixed valve disc and a base, wherein the movable valve disc and the fixed valve disc overlap, the fixed valve disc penetrates two water inlets and a water outlet, the surface of the movable valve disc facing the fixed valve disc is a water stop surface, the movable valve disc is recessed with a confluence groove, the confluence groove forms a first side wall, a drop surface and a second side wall, one end of the first side wall extends to the water stop surface, the other end of the first side wall is connected to one side of the drop surface, one end of the second side wall is connected to the other side of the drop surface, and the other end of the second side wall extends in a direction away from the fixed valve disc. When the ceramic valve is operated to be closed, the amount of water entering the confluence groove is gradually reduced, thereby preventing water hammer.

Description

Technical Field

[0001] The present invention relates to a ceramic valve, and in particular to an innovative structural form of a ceramic valve for preventing water hammer. Background Art

[0002] A ceramic valve is a water control valve whose valve core is made of ceramic material, comprising a valve shell, a valve stem, a driving seat, a movable valve plate, a fixed valve plate and a base, wherein the driving seat, the movable valve plate, the fixed valve plate and the base are assembled inside the valve shell from top to bottom, one end of the valve stem is arranged inside the valve shell, and the other end protrudes from the outside of the valve shell, thereby actuating the driving seat, and driving the movable valve plate to actuate by the driving seat, the movable valve plate and the fixed valve plate respectively made of ceramic material constitute the aforementioned valve core, one end of the valve stem is connected to the driving seat, and the other end extends out of the top of the valve shell, the driving seat is connected to the movable valve plate, and the fixed valve plate is connected to the base, the fixed valve plate and the base respectively pass through two water inlets and one water outlet, the movable valve plate is recessed in a confluence groove, and each water inlet is respectively connected to the water supply pipeline for supplying cold water and hot water, so that the cold water and hot water flow into the confluence groove through each water inlet respectively, so that the cold water and hot water are mixed and flow out through the water outlet.

[0003] The operating valve stem can move the moving valve plate to change the connection state between the confluence trough and each water inlet and outlet. Specifically, turning the valve stem can control whether the confluence trough is only connected to the water outlet. When the confluence trough is only connected to the water outlet, and each water inlet is not connected to the confluence trough, water cannot enter the confluence trough, and water cannot be supplied to the outside through the water outlet, thereby closing the ceramic valve. When the confluence trough is connected to the water outlet and at least one water inlet, water can flow into the confluence trough and then flow out from the confluence trough through the water outlet, thereby opening the ceramic valve; when the confluence trough is connected to the water outlet and at least one water inlet, turning the valve stem to rotate the moving valve plate can change the size of the connection path between each water inlet and the confluence trough, change the flow rate of cold water and hot water flowing into the confluence trough, thereby changing the outlet water temperature.

[0004] In actual application experience, it was found that this structure still has the following problems and disadvantages: when opening and closing the ceramic valve, the valve stem is operated to move between fully open and fully closed. When the water output is large, the ceramic valve is quickly and completely closed, which will cause the water flow to oscillate in the water supply pipeline, forming a water hammer phenomenon, which can easily cause damage to the water supply pipeline. Summary of the invention

[0005] The main purpose of the present invention is to provide a ceramic valve for preventing water hammer.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A ceramic valve system for preventing water hammer includes a valve housing, a valve stem, a driving seat, a movable valve disc, a fixed valve disc and a base, wherein the driving seat, the movable valve disc, the fixed valve disc and the base are assembled inside the valve housing, and the movable valve disc and the fixed valve disc overlap, one end of the valve stem is arranged inside the valve housing, and the other end of the valve stem protrudes outside the valve housing, so that the valve stem drives the driving seat, and the movable valve disc is driven by the driving seat, the fixed valve disc penetrates two water inlets and one water outlet, the movable valve disc is a water stop surface on the surface facing the fixed valve disc, the movable valve disc is recessed with a confluence groove on the water stop surface in a direction away from the fixed valve disc, and the confluence groove is a water stop line at the edge of the water stop surface;

[0008] The confluence trough forms a first side wall, a drop surface and a second side wall in the direction adjacent to each water inlet channel, the drop surface is located between the first side wall and the second side wall, and the first side wall, the drop surface and the second side wall are located in the internal area where the water stop line is projected in a direction perpendicular to the water stop surface and away from the fixed valve plate, one end of the first side wall extends to the water stop surface, and the other end of the first side wall is connected to one side of the drop surface, one end of the second side wall points to the fixed valve plate and is connected to the other side of the drop surface, and the other end of the second side wall extends in a direction away from the fixed valve plate.

[0009] The main effect and advantage of the present invention is that when the ceramic valve is changed from open to closed, the amount of water entering the confluence trough through the water inlet is gradually reduced, thereby preventing the occurrence of water hammer.

[0010] Another object of the present invention is to achieve the advantages and practical progress of guiding and changing the flow direction of water flow by using another technology in which the second side wall is in an arc or inclined shape.

[0011] Another object of the present invention is to further recess a deep concave portion of the movable valve plate inside the confluence groove through another technical feature, thereby achieving the advantage and practical progress of increasing the amount of water flowing out through the outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional exploded view of the first embodiment of the present invention;

[0013] Figure 2 It is a bottom view of the movable valve plate of the first embodiment of the present invention;

[0014] Figure 3 Tie Figure 2 Section 3-3;

[0015] Figure 4 This is a schematic diagram of the relative state of the movable valve plate and the fixed valve plate when the first embodiment of the present invention is in the open state, showing the relative state of the water inlet and the confluence groove;

[0016] Figure 5It is a schematic diagram of the relative state of the movable valve plate and the fixed valve plate when the embodiment 1 of the present invention is approaching the closed state, showing the relative state of the water inlet and the confluence groove;

[0017] Figure 6 Tie Figure 5 Section 6-6;

[0018] Figure 7 This is a schematic diagram of the relative state of the movable valve plate and the fixed valve plate in the closed state of the first embodiment of the present invention, showing the relative state of the water inlet and the confluence groove;

[0019] Figure 8 It is a bottom view of the movable valve plate of the second embodiment of the present invention;

[0020] Fig. 9 It is a bottom view of the movable valve plate of the third embodiment of the present invention;

[0021] Fig.10 Tie Fig. 9 10-10 cross-sectional view;

[0022] Fig.11 It is a bottom view of the movable valve plate of the fourth embodiment of the present invention;

[0023] Fig.12 It is a cross-sectional schematic diagram of the movable valve plate and the driving seat of the fifth embodiment of the present invention. DETAILED DESCRIPTION

[0024] The drawings illustrate several embodiments of the ceramic valve for preventing water hammer of the present invention. However, these embodiments are for illustrative purposes only and are not limited to this structure in the patent application.

[0025] like Figures 1 to 3 As shown, the first embodiment of the ceramic valve for preventing water hammer effect comprises a valve housing 10, a valve stem 20, a driving seat 30, a movable valve disc 40, a fixed valve disc 50 and a base 60, wherein the driving seat 30, the movable valve disc 40, the fixed valve disc 50 and the base 60 are arranged inside the valve housing 10, and the movable valve disc 40 and the fixed valve disc 50 are overlapped and watertightly abutted, one end of the valve stem 20 is arranged inside the valve housing 10 and connected to the driving seat 30, and the other end of the valve stem 20 protrudes from the valve housing 10. On the outside of the shell 10, the valve stem 20 drives the driving seat 30, and the driving seat 30 drives the movable valve plate 40 to move. The fixed valve plate 50 passes through two water inlets 52 and a water outlet 54. The movable valve plate 40 has a water stop surface 41 on the surface facing the fixed valve plate 50. The water stop surface 41 is in contact with the fixed valve plate 50. The movable valve plate 40 has a confluence groove 70 recessed on the water stop surface 41 in the direction away from the fixed valve plate 50. The edge of the confluence groove 70 at the water stop surface 41 is defined as a water stop line 42, and the water stop line 42 is in a closed circle.

[0026] The confluence trough 70 forms a first side wall 71, a drop surface 72 and a second side wall 73 in the direction adjacent to each water inlet channel 52, the drop surface 72 is located between the first side wall 71 and the second side wall 73, and the first side wall 71, the drop surface 72 and the second side wall 73 are located in the inner area of ​​the water stop line 42 projected in a direction perpendicular to the water stop surface 41 and away from the fixed valve plate 50, one end of the first side wall 71 extends to the water stop surface 41, and the other end of the first side wall 71 is connected to one side of the drop surface 72, one end of the second side wall 73 points to the fixed valve plate 50 and is connected to the other side of the drop surface 72, and the other end of the second side wall 73 extends in a direction away from the fixed valve plate 50.

[0027] Through the above-mentioned structural composition and technical features, when the ceramic valve for preventing water hammer effect of the present invention is used, each water inlet 52 is connected to the water supply pipeline (not shown) for supplying cold water and hot water respectively; Figure 4 As shown, when the ceramic valve is opened, the confluence groove 70 is connected with the water inlet 52 and the water outlet 54, and the cold water and the hot water flow into the confluence groove 70 through the water inlets 52 respectively, and the cold water and the hot water are mixed in the confluence groove 70 and then flow out through the water outlet 54; Figure 7 As shown, when the ceramic valve is closed, the confluence groove 70 is only connected to the water outlet 54, and the confluence groove 70 is not connected to each water inlet 52, and neither cold water nor hot water can flow into the confluence groove 70; Figure 6 As shown, the ceramic valve is to be Figure 4 The open state shown changes to Figure 7 As shown in the closed state, and approaching the closed state, the confluence groove 70 is connected to the water inlet 52 through the portion between the first side wall 71 and the second side wall 73, and the drop surface 72 is close to the fixed valve plate 50, so that the amount of water entering the confluence groove 70 through the water inlet 52 gradually decreases until the movable valve plate 40 continues to actuate to Figure 7 In the state shown, the water stop surface 41 completely blocks the communication between the water inlet 52 and the confluence groove 70; Figure 4 , Figure 5 and Figure 7 In order to facilitate identification of the relative states of the movable valve plate 40 and the fixed valve plate 50 , the movable valve plate 40 , the confluence groove 70 , and the specific structure of the confluence groove 70 are depicted with chain lines.

[0028] As mentioned above, during the process of the ceramic valve changing from an open state to a closed state, even if the user operates the control valve stem 20 to move between fully open and fully closed, the amount of water flowing from the water inlet 52 into the confluence groove 70 gradually decreases from a large amount of water to a state where it cannot enter the confluence groove 70. This can prevent the end outlet of the water flow from being instantly closed when the water flows along the water supply pipeline to the ceramic valve, thereby preventing the occurrence of water hammer.

[0029] like Figure 3As shown, in this example, the second side wall 73 is in an arc shape, accordingly, when the water flow enters the confluence trough 70, the water flow forms an oblique contact with the second side wall 73, and the flow direction of the water flow is guided and changed by the second side wall 73, and the water flow is prevented from forming a positive impact on the second side wall 73. The second side wall 73 can be replaced with a slope as needed.

[0030] The tangent direction of the second side wall 73 and the adjacent part of the drop surface 72 forms an angle θ with the water stop surface 41, and the angle θ is 45°. The angle θ can be changed as needed. When the angle θ is between 30° and 60°, when the water flows into the confluence trough 70, the second side wall 73 can gently guide and change the flow direction of the water flow to avoid the water flow from turning too sharply.

[0031] The width of the confluence groove 70 decreases from one end adjacent to the second side wall 73 and the drop surface 72 to the other end; furthermore, the depth of the first side wall 71 between the water stop surface 41 and the drop surface 72 is 0.3mm to 0.8mm, and the width of the drop surface 72 between the first side wall 71 and the second side wall 73 is 0.7mm to 1.3mm. Figure 4 The open state shown changes to Figure 5 and Figure 6 As shown, when approaching the closed state, the amount of water entering the confluence groove 70 gradually decreases, which can better prevent the occurrence of water hammer.

[0032] like Figure 8 As shown, the main difference between the second embodiment and the first embodiment is that the width of the drop surface 72 between the first side wall 71 and the second side wall 73 decreases from the side of the confluence groove 70 adjacent to each water inlet (not shown in the figure) to the side of the confluence groove 70 adjacent to the water outlet (not shown in the figure).

[0033] like Fig. 9 and Fig.10 As shown, the main difference between the third embodiment and the first embodiment is that the movable valve plate 40 is further recessed into a deep recess 74 inside the confluence groove 70. The deep recess 74 is formed in the direction of the confluence groove 70 adjacent to the water outlet (not shown in the figure). Accordingly, the volume of the confluence groove 70 is expanded by the deep recess 74, thereby increasing the amount of water that the confluence groove 70 can accommodate, thereby increasing the amount of water flowing out through the water outlet; the deep recess 74 extends adjacent to the second side wall 73.

[0034] like Fig.11As shown, the main difference between the fourth embodiment and the third embodiment is that the deep recess 74 forms a third side wall 75 in the direction adjacent to the water outlet (not shown in the figure), and one end of the third side wall 75 extends to the water stop surface 41, and the third side wall 75 extends laterally to connect with the first side wall 71. Furthermore, the distance between the side of the confluence trough 70 adjacent to each water inlet (not shown in the figure) and the side of the confluence trough 70 adjacent to the water outlet is D1, and the distance between the side of the drop surface 72 adjacent to each water outlet and the side of the second side wall 73 adjacent to the water outlet is D2, and D2≧(1 / 2)D1. Accordingly, compared with the third embodiment, this embodiment can further expand the amount of water that the confluence trough 70 can accommodate.

[0035] like Fig.12 As shown, the main difference between the fifth embodiment and the first embodiment is that the confluence groove 70 penetrates the movable valve plate 40, driving the seat 30 to close one end of the confluence groove 70 away from the fixed valve plate (not shown in the figure).

[0036] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A ceramic valve for preventing water hammer, comprising a valve housing, a valve stem, a driving seat, a movable valve disc, a fixed valve disc and a base, wherein the driving seat, the movable valve disc, the fixed valve disc and the base are assembled inside the valve housing, and the movable valve disc and the fixed valve disc overlap, one end of the valve stem is arranged inside the valve housing, and the other end of the valve stem protrudes outside the valve housing, so that the valve stem drives the driving seat, and the driving seat drives the movable valve disc, and the fixed valve disc penetrates two water inlets and one water outlet, and the movable valve disc is a water stop surface on the surface facing the fixed valve disc, and the movable valve disc is recessed with a confluence groove on the water stop surface in a direction away from the fixed valve disc, and the confluence groove is a water stop line at the edge of the water stop surface; characterized in that: The confluence trough forms a first side wall, a drop surface and a second side wall in the direction adjacent to each water inlet channel, the drop surface is located between the first side wall and the second side wall, the first side wall, the drop surface and the second side wall are located in the internal area where the water stop line is projected in a direction perpendicular to the water stop surface and away from the fixed valve plate, one end of the first side wall extends to the water stop surface, the other end of the first side wall is connected to one side of the drop surface, one end of the second side wall points to the fixed valve plate and is connected to the other side of the drop surface, and the other end of the second side wall extends in a direction away from the fixed valve plate.

2. The ceramic valve for preventing water hammer according to claim 1, characterized in that The second side wall is in the shape of an inclined surface or an arc surface, and the tangent direction of the second side wall adjacent to the drop surface forms an angle with the water stop surface, and the angle is between 30° and 60°.

3. The ceramic valve for preventing water hammer according to claim 2, characterized in that The width of the confluence groove decreases from one end where the second side wall is adjacent to the drop surface to the other end.

4. The ceramic valve for preventing water hammer according to claim 1 or 2, characterized in that The movable valve plate is further recessed into a deep concave portion inside the confluence groove, and the deep concave portion is formed in a direction of the confluence groove adjacent to the water outlet.

5. The ceramic valve for preventing water hammer according to claim 4, characterized in that The deep recess extends adjacent to the second side wall.

6. The ceramic valve for preventing water hammer according to claim 4, characterized in that The deep concave portion forms a third side wall in the direction adjacent to the water outlet, one end of the third side wall extends to the water stop surface, and the third side wall extends laterally to connect with the first side wall.

7. The ceramic valve for preventing water hammer according to claim 4, characterized in that The distance between the side of the confluence trough adjacent to each water inlet and the side of the confluence trough adjacent to the water outlet is D1, and the distance between the side of the drop surface adjacent to each water outlet and the side of the second side wall adjacent to the water outlet is D2, D2≧(1 / 2)D1.

8. The ceramic valve for preventing water hammer according to any one of claims 1 to 3, characterized in that The confluence groove penetrates through the movable valve plate, driving the seat to close the end of the confluence groove away from the fixed valve plate.

9. The ceramic valve for preventing water hammer according to any one of claims 1 to 3, characterized in that The depth of the first side wall between the water stop surface and the drop surface is 0.3 mm to 0.8 mm, and the width of the drop surface between the first side wall and the second side wall is 0.7 mm to 1.3 mm.

10. The ceramic valve for preventing water hammer according to any one of claims 1 to 3, characterized in that The width of the drop surface between the first side wall and the second side wall decreases gradually from the side of the confluence groove adjacent to each water inlet toward the side of the confluence groove adjacent to the water outlet.

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