Flow balance valve

Abstract

The utility model provides a flow balance valve, and belongs to the technical field of valves. The problems of high cost and easy leakage caused by the fact that a fluid system has an internal flushing function are solved. The two ends of the tubular body are a water inlet end and a water outlet end respectively, the first ball core is arranged in the water outlet end, the body is provided with a mechanical flow indicating mechanism, the first ball core is provided with a water through hole, and the side portion of the water inlet end and the side portion of the water outlet end are both provided with connecting ends in a protruding mode. The mechanical flow indicating mechanism is located between the two connecting ends in the axial direction of the body, the position of the connecting end located on the side portion of the water outlet end corresponds to the first ball core, and the water through hole is a T-shaped hole and always communicates with the interior of the connecting end located on the side portion of the water outlet end. The fluid system has the advantages of being low in cost, not prone to leakage and the like while having an internal flushing function.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and relates to a flow balancing valve. Background Technology

[0002] In existing fluid systems, flow balancing valves are often installed. These valves display the water flow rate and allow users to manually control the flow rate based on the displayed reading. For example, a flow balancing valve disclosed in patent application number 202320338748.7 includes a valve body, a valve stem, a spring, a floating spring seat, and a transparent tube. The valve stem is disposed within the valve body, and the transparent tube is disposed within the valve body. One end of the spring is connected to the valve stem, and the other end is connected to the floating spring seat. The spring and the floating spring seat are disposed within the transparent tube. The side wall of the valve body has at least one viewing window, and a flow rate scale is provided at the position of the transparent tube corresponding to the viewing window. The floating spring seat can overcome the spring force under the thrust of the fluid to move, thereby determining the fluid flow rate value based on the correspondence between the position of the floating spring seat after movement and the flow rate scale. Further, the valve stem includes a valve core, a first valve seat, a second valve seat, and a valve stem. The valve core is disposed between the first and second valve seats and can rotate relative to the first and second valve seats to adjust the opening degree. In use, this flow regulating valve is connected to the fluid system. Based on the flow rate value of the fluid read in the window, the opening of the balancing valve is adjusted by operating the valve core to achieve flow balance and meet the usage requirements (when the pressure at the fluid inlet increases, the flow rate increases. At this time, the opening of the flow balancing valve is reduced so that the flow rate is equal to the flow rate before the pressure increases; when the pressure at the fluid inlet decreases, the flow rate decreases. At this time, the opening of the flow valve is increased so that the flow rate is equal to the flow rate before the pressure decreases).

[0003] In practice, once a fluid system is assembled, impurities inevitably remain inside. These impurities move with the fluid, and some can damage valves or other components. Therefore, some specialized fluid systems require internal flushing capabilities to flush the system before operation. A common setup for internal flushing involves connecting two three-way valves. Two ports of these valves are used for installation, while the third port is used for flushing (it can be plugged when not in use). During flushing, both third ports of the three-way valves are opened. Flushing water flows into the system through the third port of one valve and exits through the third port of the other, flushing the system and removing impurities. While this structure provides internal flushing, the additional use of two three-way valves increases costs and adds potential leakage points. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a flow balancing valve, which solves the problems of high cost and easy leakage caused by the internal flushing function of the fluid system.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A flow balancing valve includes a tubular body with an inlet and an outlet at its two ends, and a ball core located inside the outlet. The body is equipped with a mechanical flow indicator mechanism, and the ball core is equipped with a water passage hole. The valve is characterized in that a connecting end is protruding from the side of both the inlet and outlet ends. The mechanical flow indicator mechanism is located between the two connecting ends along the axial direction of the body. The position of the connecting end located on the side of the outlet corresponds to that of the ball core. The water passage hole is a T-shaped hole and is always connected to the interior of the connecting end located on the side of the outlet.

[0007] Under normal use, both connection ends are sealed with plugs, and the ball core is in a state where the inlet and outlet ends are connected. When flushing the fluid system is required, connect the two connection ends to water pipes respectively, and control the rotation of the ball core to isolate the inlet and outlet ends of the main body. The water pipe at the outlet end is used to introduce flushing water, while the water pipe at the inlet end is used to discharge flushing water. Because the inside of the outlet end is always connected to the through hole of the ball core, the flushing water enters the outlet end and flows through the through hole of the ball core into the outlet end of the main body, then smoothly into the fluid system, and finally into the inlet end of the main body and out through the inlet end, thus completing the flushing of the fluid system.

[0008] By protruding connection ends on the sides of the inlet and outlet, and combining this with the T-shaped hole in the ball core, the fluid system can directly achieve internal flushing function using this flow balancing valve. This eliminates the need to connect two additional three-way valves to the fluid system, thus significantly reducing costs while providing internal flushing functionality. Furthermore, fewer connection points also reduce the risk of leakage.

[0009] In the above-mentioned flow balancing valve, each of the two connecting ends is provided with a ball core and a valve stem. The inner end of the valve stem is connected to the ball core, and the outer end of the valve stem extends out of the connecting end and is fixedly connected with a handle.

[0010] By adjusting the flow rate of the inflow or outflow of flushing water according to the actual situation through the ball core, valve stem, and handle, the flushing effect can be ensured.

[0011] In the flow balancing valve described above, the two connection ends are located on the same side of the body.

[0012] Both valve stems within the two connecting ends are connected to handles on their outer ends. Therefore, setting the two connecting ends to be located on the same side of the main body makes it convenient for users to operate.

[0013] In the above-mentioned flow balancing valve, an annular positioning seat is provided in the body near the water outlet end, and a connector is threaded to the water outlet end of the body. The inner end of the connector is located inside the water outlet end, and an inner cavity is formed between the inner end of the connector, the inner wall of the body, and the annular positioning seat. A ball core is provided in the inner cavity, and the connecting end located on the side of the water outlet end communicates with the inner cavity.

[0014] The connecting end located on the side of the water outlet is connected to the inner cavity, while the ball core is set in the inner cavity. In this way, the connecting end located on the side of the water outlet can always be connected to the water passage of the ball core.

[0015] In the aforementioned flow balancing valve, the mechanical flow indicator mechanism includes a transparent tube arranged axially within the body, and a spring and a float both arranged within the transparent tube. The two ends of the spring abut against the annular positioning seat and the float, respectively. A retaining ring is threadedly connected to the body near the water inlet end. The two ends of the transparent tube abut against the annular positioning seat and the retaining ring, respectively. The float abuts against the retaining ring. The float has a through hole along the axial direction of the body, and the diameter of the through hole is smaller than the diameter of the central hole of the retaining ring.

[0016] In the aforementioned flow balancing valve, the transparent tube is equipped with an indicator mark, and the side of the main body is equipped with a window. The indicator mark is located inside the window. Positioning steps are provided on the outer sides of both ends of the transparent tube, and sealing rings are provided on the two positioning steps respectively. Both sealing rings abut against the inner wall of the main body to form a seal.

[0017] Sealing rings are installed at the two positioning steps of the transparent tube. Both sealing rings abut against the inner wall of the body to form a seal, which can prevent water from leaking out through the window from the gap between the body and the transparent tube.

[0018] In the aforementioned flow balancing valve, the main body is provided with a valve stem, the inner end of which is connected to a ball core. The side of the main body is provided with a protrusion, and the outer end of the valve stem protrudes with a straight connecting part. The length of the connecting part is set along the radial direction of the valve stem. The connecting part extends out of the protrusion. The inner side of the protrusion is provided with two arc-shaped limiting notches at the position where the connecting part extends. The arc of the two limiting notches is 90° and the included angle between the two limiting notches is 90°. The two ends of the connecting part along the length direction are respectively located in the two limiting notches.

[0019] When valve stem one needs to be operated, the tool is fitted onto the part of the connecting portion that extends beyond the protrusion and then rotated. This causes valve stem one to rotate along with the ball core one to regulate the flow rate, or to control the ball core one to connect or disconnect the inlet and outlet ends of the valve body. Furthermore, the connecting portion is in a straight line shape, with its length arranged radially along valve stem one. Both ends of the connecting portion along its length are located within two limiting notches. Thus, when valve stem one rotates, the connecting portion moves along the limiting notches. In other words, the connecting portion also functions to limit the rotation angle of valve stem one in conjunction with the limiting notches.

[0020] Compared with existing technologies, this flow balancing valve has protruding connection ends on the side of the inlet and outlet, and the through hole inside the ball core is set as a T-shaped hole. This allows the fluid system to directly achieve the internal flushing function by relying on this flow balancing valve. This eliminates the need to connect two additional three-way valves to the fluid system. Therefore, while the fluid system has the internal flushing function, it also greatly reduces costs. Furthermore, because there are fewer connection points, leakage is less likely. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the flow balancing valve.

[0022] Figure 2 This is a cross-sectional view of the flow balancing valve.

[0023] Figure 3 yes Figure 2 Sectional view along the AA direction.

[0024] In the diagram, 1. Body; 1a. Inlet; 1b. Outlet; 1c. Connecting end; 1d. Annular positioning seat; 1e. Window; 1f. Protrusion; 1f1. Limiting notch; 2. Ball core one; 2a. Water passage hole; 3. Mechanical flow indicator mechanism; 4. Ball core two; 5. Valve stem two; 6. Handle; 7. Connector; 8. Transparent tube; 9. Spring; 10. Float; 10a. Through hole; 11. Retaining ring; 12. Sealing ring; 13. Valve stem one; 13a. Connecting part; 14. Inner cavity. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figures 1-3As shown, the flow balancing valve includes a tubular body 1 with an inlet end 1a and an outlet end 1b at its two ends, and a ball core 2 disposed within the outlet end 1b of the body 1. The ball core 2 has a water passage hole 2a, and the body 1 has a mechanical flow indicator mechanism 3. Connecting ends 1c protrude from the sides of both the inlet end 1a and the outlet end 1b. The mechanical flow indicator mechanism 3 is located between the two connecting ends 1c along the axial direction of the body 1. The position of the connecting end 1c located on the side of the outlet end 1b corresponds to the ball core 2. The water passage hole 2a is a T-shaped hole, and it is always connected to the interior of the connecting end 1c located on the side of the outlet end 1b. Further, each of the two connecting ends 1c contains a ball core 2 4 and a valve stem 2 5. The inner end of the valve stem 2 5 is connected to the ball core 2 4, and the outer end of the valve stem 2 5 extends out of the connecting end 1c and is fixedly connected to a handle 6. The two connecting ends 1c are located on the same side of the body 1.

[0027] Among them, such as Figure 2 As shown, an annular positioning seat 1d is provided inside the body 1 near the water outlet 1b. A connector 7 is threadedly connected to the water outlet 1b of the body 1. The inner end of the connector 7 is located inside the water outlet 1b. An inner cavity 14 is formed between the inner end of the connector 7, the inner wall of the body 1, and the annular positioning seat 1d. The ball core 2 is located in the inner cavity 14. The connecting end 1c located on the side of the water outlet 1b communicates with the inner cavity 14. The mechanical flow indicator 3 includes a transparent tube 8 arranged axially within the body 1, and a spring 9 and a float 10 both arranged within the transparent tube 8. The two ends of the spring 9 abut against the annular positioning seat 1d and the float 10, respectively. A retaining ring 11 is threadedly connected to the body 1 near the water inlet end 1a. The two ends of the transparent tube 8 abut against the annular positioning seat 1d and the retaining ring 11, respectively. The float 10 abuts against the retaining ring 11. The float 10 has a through hole 10a along the axial direction of the body 1. The diameter of the through hole 10a is smaller than the diameter of the central hole of the retaining ring 11.

[0028] like Figure 1 and Figure 2As shown, the transparent tube 8 has an indicator mark on its side, and the main body 1 has a window 1e on its side. The indicator mark is located inside the window 1e. The outer sides of both ends of the transparent tube 8 are respectively provided with positioning steps, and the two positioning steps are respectively provided with sealing rings 12. The two sealing rings 12 abut against the inner wall of the main body 1 to form a seal. The main body 1 is provided with a valve stem 13. The inner end of the valve stem 13 is connected to the ball core 2. The side of the main body 1 is provided with a protrusion 1f. The outer end of the valve stem 13 protrudes and is provided with a straight connecting part 13a. The length of the connecting part 13a is set along the radial direction of the valve stem 13. The connecting part 13a extends out of the protrusion 1f. The inner side of the protrusion 1f is provided with two arc-shaped limiting notches 1f1 at the position where the connecting part 13a extends. The arc of the two limiting notches 1f1 is 90° and the included angle between the two limiting notches 1f1 is 90°. The two ends of the connecting part 13a along the length direction are respectively located in the two limiting notches 1f1. When valve stem 13 needs to be operated, the tool is fitted onto the part of the connecting part 13a that extends beyond the protruding part 1f and then rotated. This causes valve stem 13 to rotate along with ball core 2 to regulate the flow rate, or to control ball core 2 to connect or disconnect the inlet end 1a and outlet end 1b of the main body 1. Furthermore, the connecting part 13a is in the shape of a straight line and its length is arranged radially along valve stem 13. Both ends of the connecting part 13a along its length are located within two limiting notches 1f1. Thus, when valve stem 13 rotates, the connecting part 13a moves along the limiting notches 1f1. In other words, the connecting part 13a also functions to cooperate with the limiting notches 1f1 to limit the rotation angle of valve stem 13.

[0029] Similar to existing models, this flow balancing valve also features flow indication and manual flow adjustment to achieve flow balance. Under normal use, both connection ends 1c are sealed with plugs, and the ball core 2 connects the inlet end 1a and the outlet end 1b. The float 10 moves under water pressure, overcoming the spring force of the spring 9. The user can directly observe the position of the float 10 through the window 1e on the side of the main body 1 and read the current flow value using the indicator. When the read flow value is too high, it means the water pressure is too high; the user can reduce the flow by rotating the valve stem 13 to rotate the ball core 2. When the read flow value is too low, it means the water pressure is too low; the user can increase the flow by rotating the valve stem 13 to rotate the ball core 2.

[0030] When flushing is required inside the fluid system, connect the two connection ends 1c to water pipes respectively, and rotate the valve stem 13 to rotate the ball core 2, thus separating the inlet end 1a and the outlet end 1b of the main body 1. The water pipe at the connection end 1c located on the outlet end 1b side is used to introduce flushing water, while the water pipe at the connection end 1c located on the inlet end 1a side is used to discharge flushing water. The flushing water flows through the through hole 10a of the ball core 2 into the connector 7, and then through the connector 7 into the fluid system, finally flowing into the inlet end 1a of the main body 1 and exiting from the connection end 1c located on the inlet end 1a side. By protruding connection ends 1c on the side of the inlet end 1a and the side of the outlet end 1b, and combining the through hole 10a in the ball core 2 with a T-shaped hole, the fluid system can directly achieve the internal flushing function by relying on this flow balancing valve. This eliminates the need to connect two additional three-way valves to the fluid system. Therefore, while the fluid system has the internal flushing function, the cost is also greatly reduced, and because there are fewer connection points, leakage is less likely.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A flow balance valve comprising a body (1) in the shape of a pipe with a water inlet end (1a) and a water outlet end (1b) at opposite ends, and a ball core (2) arranged in the water outlet end (1b), the body (1) being provided with a mechanical flow indicating mechanism (3), and the ball core (2) being provided with a water passage hole (2a), characterized in that, The side of the water inlet end (1a) and the side of the water outlet end (1b) are provided with connecting ends (1c), the mechanical flow indicating mechanism (3) is located between the two connecting ends (1c) along the axial direction of the body (1), the connecting end (1c) located at the side of the water outlet end (1b) corresponds to the ball core (2), the water passage (2a) is a T-shaped hole, and the water passage (2a) is always connected with the inside of the connecting end (1c) located at the side of the water outlet end (1b).

2. The flow balance valve according to claim 1, characterized in that The two connecting ends (1c) are provided with the ball core (4) and the valve rod (5), the inner end of the valve rod (5) is connected with the ball core (4), and the outer end of the valve rod (5) extends out of the connecting end (1c) and is fixedly connected with the handle (6).

3. The flow balance valve of claim 2, wherein, The two connecting ends (1c) are located at the same side of the body (1).

4. The flow balance valve according to claim 1 or 2 or 3, characterized in that, The body (1) is provided with the annular positioning seat (1d) near the water outlet end (1b), the water outlet end (1b) of the body (1) is threadedly connected with the connector (7), the inner end of the connector (7) is located in the water outlet end (1b), an inner cavity (14) is formed between the inner end of the connector (7), the inner wall of the body (1) and the annular positioning seat (1d), the ball core (2) is arranged in the inner cavity (14), and the connecting end (1c) located at the side of the water outlet end (1b) is connected with the inner cavity (14).

5. The flow balance valve of claim 4, wherein, The mechanical flow indicating mechanism (3) comprises a transparent tube (8) arranged in the body (1) along the axial direction and a spring (9) and a float (10) arranged in the transparent tube (8), the two ends of the spring (9) abut against the annular positioning seat (1d) and the float (10) respectively, the body (1) is threadedly connected with the retainer ring (11) near the water inlet end (1a), the two ends of the transparent tube (8) abut against the annular positioning seat (1d) and the retainer ring (11) respectively, the float (10) abuts against the retainer ring (11), the float (10) is provided with a through hole (10a) along the axial direction of the body (1), and the diameter of the through hole (10a) is smaller than the diameter of the center hole of the retainer ring (11).

6. The flow balance valve of claim 5, wherein, The transparent tube (8) is provided with an indicating mark, the body (1) is provided with a window (1e), the indicating mark is located in the window (1e), the two outer sides of the two ends of the transparent tube (8) are provided with positioning steps, the two positioning steps are provided with sealing rings (12), and the two sealing rings (12) abut against the inner wall of the body (1) to form a seal.

7. The flow balance valve according to claim 1 or 2 or 3, characterized in that, The body (1) is provided with the valve rod (13), the inner end of the valve rod (13) is connected with the ball core (2), the side of the body (1) is provided with the protruding portion (1f), the outer end of the valve rod (13) is provided with a linear connecting portion (13a), the length of the connecting portion (13a) is arranged along the radial direction of the valve rod (13), the connecting portion (13a) partially extends out of the protruding portion (1f), the inner side of the protruding portion (1f) is provided with two arc-shaped limiting notches (1f1) at the position where the connecting portion (13a) extends out, the two limiting notches (1f1) are both 90° in arc degree, the included angle between the two limiting notches (1f1) is 90°, and the two ends of the connecting portion (13a) along the length direction are located in the two limiting notches (1f1) respectively.

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