A dynamic balancing valve

Abstract

The utility model discloses a dynamic balancing valve, comprising a valve body and a valve cap. The valve body is provided with a water inlet and a water outlet, a main flow channel is provided in the water inlet, the valve body comprises a pressure stabilizing mechanism, a filtering mechanism, and a flow regulating mechanism. A piston water-passing groove and a piston water-passing notch are provided on the pressure stabilizing piston of the pressure stabilizing mechanism, so as to ensure that the liquid flow can enter the pressure stabilizing chamber, improve the pressure control accuracy and service life of the balancing valve, and at the same time have a full-stroke flow control function and a filtering function, the flow rate is adjustable, and an anti-disassembly function is provided; the pressure control is automatically adjusted, the stability is high, and energy consumption is saved.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a dynamic balancing valve. Background Art

[0002] The dynamic balancing valve is also called a pressure-independent balancing control valve. It is used in the piping of heating and cooling systems. Its advantage is that it has the function of automatically adjusting the flow at the valve outlet so that the valve flow is not affected by the pressure difference fluctuation of the system.

[0003] The existing dynamic balancing valve has low flow control accuracy due to the narrow water passage between the internal piston and the chamber. In addition, dirt easily accumulates on the piston surface after long-term use, further reducing the liquid flow passage, affecting the control accuracy, and seriously causing the passage to be blocked and fail. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a dynamic balancing valve, which solves the problems of low flow control accuracy and blockage of water passages mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A dynamic balancing valve comprises a valve body and a valve cap, wherein the valve body is provided with a water inlet and a water outlet, a main flow channel is provided in the water inlet, and a pressure stabilizing mechanism is provided in a pressure stabilizing part on the upper part of the valve body, and is used to adjust the flow rate of the water outlet of the valve body;

[0007] The pressure-stabilizing mechanism includes a pressure-stabilizing base, a pressure-stabilizing spring, a piston assembly and a screw rod. The bottom of the pressure-stabilizing base is fixed in the pressure-stabilizing part. The pressure-stabilizing spring is arranged between the pressure-stabilizing base and the piston assembly. The screw rod passes through the through hole in the middle of the piston assembly and is slidably connected with the piston assembly. The piston assembly divides the space in the pressure-stabilizing part into a pressure-stabilizing chamber and a water-passing chamber. The water-passing chamber is connected to the main channel and the water outlet through a secondary channel. A screw water-passing channel is arranged inside the screw rod. The screw water-passing channel connects the main channel and the pressure-stabilizing chamber. A water-passing retaining ring is arranged at the bottom of the screw rod. A plurality of piston water-passing grooves are arranged on the top of the piston assembly. A piston water-passing notch is arranged at the outer end of the piston water-passing groove.

[0008] Preferably, a filtering mechanism is further included, wherein the filtering mechanism is arranged in a filtering portion at the lower part of the valve body and is used for filtering the liquid flow entering the valve body.

[0009] Preferably, the filtering mechanism comprises a filtering retaining ring, and a middle portion of the filtering retaining ring is provided with evenly distributed filtering holes.

[0010] Preferably, it also includes a sewage discharge mechanism, which is detachably mounted at the lower end of the filter part. The sewage discharge mechanism includes a sewage discharge sleeve, one end of which is connected to the filter part, and the other end is provided with a sewage discharge port. A sewage discharge ball valve is provided inside the sewage discharge sleeve, and the sewage discharge ball valve is connected to a sewage discharge switch outside the sewage discharge sleeve.

[0011] Preferably, a flow regulating mechanism is further included, and the flow regulating mechanism is arranged in the valve cap to control the valve flow.

[0012] Preferably, the flow regulating mechanism includes a return spring, a positioning gasket, an E-type retaining ring and a decorative cover which are sequentially mounted on the screw rod from bottom to top. The decorative cover and the valve bonnet are threadedly connected. The bottom of the return spring is connected to the valve bonnet, and the upper end is connected to the screw rod through the positioning gasket and the E-type retaining ring.

[0013] Preferably, a gasket is sleeved on the decorative cover, a scale is provided on the gasket, a pointer is provided on the decorative cover, the pointer cooperates with the scale to indicate the flow rate, and a valve magnetic lock is provided on the top of the decorative cover.

[0014] Preferably, the piston assembly comprises a pressure-stabilizing piston and an elastic valve, wherein the pressure-stabilizing piston is sleeved on the screw rod and is slidably connected to the screw rod, and the inner end of the elastic valve is sealed to the pressure-stabilizing piston, and the outer end is sealed to the inner wall of the pressure-stabilizing part.

[0015] Preferably, the valve body and the valve cap are fixedly connected by screws, a sealing ring is provided at the connection, and a temperature sensing groove is also provided on the valve body.

[0016] The present invention provides a dynamic balancing valve, which has the following beneficial effects:

[0017] (1) A plurality of piston water grooves and corresponding piston water gaps are arranged on the top of the pressure-stabilizing piston. The liquid flow from the screw water channel can enter the pressure-stabilizing chamber through the piston water grooves and the piston water gaps, thereby ensuring good liquid flow permeability, making the pressure-stabilizing chamber have sufficient water volume, reducing the flow instability caused by insufficient liquid flow in the pressure-stabilizing chamber, thereby improving the accuracy of the flow control of the balancing valve. At the same time, the existence of the piston water grooves and the piston water gaps also avoids the situation where dirt accumulation on the piston surface affects the flow or even blocks the flow, thereby extending the service life of the balancing valve.

[0018] (2) A filter mechanism is set at the water inlet to remove large particles of impurities in the water, preventing impurities from entering the valve and affecting the normal operation of the rear end components of the valve. It protects the screw rod through the water channel, ensures the normal operation of the valve and extends its service life. At the same time, a sewage discharge mechanism is set on the filter mechanism to have a sewage discharge function.

[0019] (3) A flow regulating mechanism is provided on the valve cap, which has the function of full-stroke flow regulation. The flow regulating mechanism is adjusted by rotating the decorative cover with a special tool and is provided with a scale indicator. It has a proportional regulation function and a flow locking function. It can be adjusted at the second level in conjunction with an analog actuator and can be adapted to an electric actuator.

[0020] (4) A temperature sensing groove is set on the valve body. The temperature sensing groove is a blind hole design and is used for return water temperature measurement. It is not connected to the inside of the valve, so the temperature sensing device can be easily installed, ensuring the accuracy of temperature measurement, reducing leakage points, and facilitating construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure after decomposition of the present invention;

[0023] Figure 3 It is an internal cross-sectional structural diagram of the present invention;

[0024] Figure 4 is a schematic diagram of a piston assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of flow regulation of the present invention. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1

[0028] like Figure 1-Figure 5 As shown, a dynamic balancing valve comprises a valve body 1 and a valve cap 2, wherein the valve body 1 is provided with a water inlet 101 and a water outlet 102, wherein a main flow channel 104 is provided in the water inlet 101, and further comprises a pressure stabilizing mechanism, wherein the pressure stabilizing mechanism is provided in a pressure stabilizing portion 105 at the upper portion of the valve body 1, and is used to adjust the flow rate of the water outlet 102 of the valve body;

[0029] The pressure stabilizing mechanism includes a pressure stabilizing base 3, a pressure stabilizing spring 4, a piston assembly 5 and a screw 6. The bottom of the pressure stabilizing base 3 is fixed in the pressure stabilizing part 105. The pressure stabilizing spring 4 is arranged between the pressure stabilizing base 3 and the piston assembly 5. The screw 6 passes through the through hole in the middle of the piston assembly 5 and is slidably connected with the piston assembly 5. The piston assembly 5 divides the space in the pressure stabilizing part 105 into a pressure stabilizing chamber 503 and a water passage chamber 107. The water passage chamber 107 is connected to the main channel 104 and the water outlet 102 through the secondary flow channel 106. A screw water passage 601 is arranged inside the screw 6. The screw water passage 601 connects the main channel 104 with the pressure stabilizing chamber 503. The screw 6 A water-passing retaining ring 501 is provided at the bottom, a plurality of piston water-passing grooves 505 are provided at the top of the piston assembly 5, and a piston water-passing notch 504 is provided at the outer end of the piston water-passing groove 505. The piston assembly 5 includes a pressure-stabilizing piston 506 and an elastic valve 502. The pressure-stabilizing piston 506 is sleeved on the screw rod 6 and is slidably connected to the screw rod 6. The inner end of the elastic valve 502 is sealedly connected to the pressure-stabilizing piston 506, and the outer end is sealedly connected to the inner wall of the pressure-stabilizing part 105. The valve body 1 and the valve cap 2 are fixedly connected by screws, and a sealing ring 12 is provided at the connection, which can be an O-type rubber ring. The screw rod 6 is made of stainless steel to prevent rust.

[0030] In this embodiment, the liquid flows into the main channel 104 through the water inlet 101, and then most of the liquid flows into the water flow chamber 107 through the secondary flow channel 106, and a small part of the liquid flows into the pressure stabilizing chamber 503 through the screw water flow channel 601. The pressure stabilizing chamber 503 is connected to the water outlet 102, so the pressure in the pressure stabilizing chamber 503 and the water outlet 102 is the same.

[0031] When the pressure difference between the water inlet and outlet becomes larger, the liquid flow in the main channel 104 becomes larger, and the pressure in the pressure-stabilizing chamber 503 increases, thereby pressing the pressure-stabilizing piston 506 and the pressure-stabilizing spring 4 downward, causing the secondary channel 106 to decrease, but it will not be completely closed. The reduction of the secondary channel 106 will cause the liquid flow to the water outlet 102 to decrease accordingly, thereby ensuring that the final outflowing liquid flow rate remains unchanged.

[0032] When the pressure difference between the water inlet and outlet becomes smaller, the liquid flow in the main channel 104 becomes smaller, the pressure in the pressure stabilizing chamber 503 decreases, the downward pressure on the pressure stabilizing spring 4 decreases, and the pressure stabilizing piston 506 rises under the elastic force of the pressure stabilizing spring 4, causing the secondary flow channel 106 to increase. The increase in the secondary flow channel 106 causes the liquid flow to the water outlet 102 to increase accordingly, thereby ensuring that the final outflowing liquid flow rate remains unchanged.

[0033] In the present embodiment, since a plurality of piston water grooves and corresponding piston water notches are arranged on the top of the pressure-stabilizing piston, the liquid flow from the screw water channel can enter the pressure-stabilizing chamber through the piston water grooves and the piston water notches, thereby ensuring good liquid flow permeability, ensuring sufficient water in the pressure-stabilizing chamber, reducing flow instability caused by insufficient liquid flow in the pressure-stabilizing chamber, and thus improving the accuracy of flow control of the balancing valve. At the same time, the presence of the piston water grooves and the piston water notches also avoids the situation where dirt accumulation on the piston surface affects the flow of liquid or even causes blockage, thereby extending the service life of the balancing valve.

[0034] Example 2

[0035] On the basis of embodiment 1, a filtering mechanism is further included, which is arranged in the filtering part 103 at the lower part of the valve body 1, and is used to filter the liquid flow entering the valve body 1. The filtering mechanism includes a filtering retaining ring 11, and the middle part of the filtering retaining ring 11 is provided with evenly distributed filtering holes 1101.

[0036] In this embodiment, the liquid flows from the inside of the filter retaining ring 11 through the filter holes 1101 into the main flow channel 104 , and the impurities therein are blocked and remain in the filter retaining ring 11 .

[0037] Example 3

[0038] On the basis of Example 2, it also includes a sewage discharge mechanism 14, which is detachably installed at the lower end of the filter part 103. The sewage discharge mechanism 14 includes a sewage discharge sleeve 1401. One end of the sewage discharge sleeve 1401 is connected to the filter part 103, and the other end is provided with a sewage outlet 1402. A sewage discharge ball valve 1404 is provided inside the sewage discharge sleeve 1401, and the sewage discharge ball valve 1404 is connected to the sewage discharge switch 1403 outside the sewage discharge sleeve 1401.

[0039] In this embodiment, impurities in the filter retaining ring 11 enter the sewage sleeve 1401 and then enter the storage chamber 1403 for temporary storage. The storage chamber 1403 needs to be cleaned regularly.

[0040] Example 4

[0041] On the basis of Example 1, a flow regulating mechanism is further included, and the flow regulating mechanism is arranged on the valve cap 2 for controlling the valve flow. The flow regulating mechanism includes a reset spring 9, a positioning gasket 8, an E-type retaining ring 13 and a decorative cover 7 which are sequentially sleeved on the screw rod from bottom to top. The decorative cover 7 is threadedly connected to the valve cap 2. The bottom of the reset spring 9 is connected to the valve cap 2, and the upper end is connected to the screw rod 6 through the positioning gasket 8 and the E-type retaining ring 13. The decorative cover 7 is sleeved with a gasket 16, and a scale is provided on the gasket 16. The decorative cover 7 is provided with a pointer, and the pointer is used to indicate the flow size in conjunction with the scale. The top of the decorative cover 7 is provided with a valve magnetic lock 15, and the valve magnetic lock 15 is used to protect the flow regulating mechanism. When adjustment is required, a special key is used to open the valve magnetic lock 15, and the decorative cover 7 is rotated with a tool. When the decorative cover 7 is rotated, the screw rod 6 is driven up and down to adjust the flow. Further, the flow regulating mechanism is provided with a scale indication, has a proportional adjustment function and a flow locking function, and can be adjusted at two levels in conjunction with an analog actuator, and can be adapted to an electric actuator.

[0042] In this embodiment, the valve can be controlled for full-stroke flow rate by the decorative cover 7. When the decorative cover 7 is rotated, the screw rod 6 moves downward under the pressure of the decorative cover 7, driving the water flow retaining ring 501 to move downward, the secondary flow channel 106 is reduced, and the liquid flow rate is reduced. When the decorative cover 7 is rotated in the opposite direction, the screw rod 6 moves upward under the elastic force of the return spring 9, driving the water flow retaining ring 501 to move upward, the secondary flow channel 106 is enlarged, and the liquid flow rate is increased.

[0043] Example 5

[0044] Based on Example 2, Example 4 is also included, and the specific structure and function are as described above.

[0045] Example 6

[0046] Based on Example 3, Example 4 is also included, and the specific structure and function are as described above.

[0047] Example 7

[0048] On the basis of any of the above embodiments, it also includes a temperature sensing groove 108 arranged on the valve body 1. The temperature sensing groove 108 is a blind hole design, which is used for return water temperature measurement and is not connected to the inside of the valve. The temperature sensing device can be easily installed, thereby ensuring the accuracy of temperature measurement, reducing leakage points, and facilitating construction.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dynamic balancing valve, comprising a valve body and a valve cap, wherein the valve body is provided with a water inlet and a water outlet, and a main flow channel is provided in the water inlet, characterized in that: It also includes a pressure stabilizing mechanism, which is arranged in a pressure stabilizing portion on the upper part of the valve body and is used to adjust the flow rate of the water outlet of the valve body; The pressure-stabilizing mechanism includes a pressure-stabilizing base, a pressure-stabilizing spring, a piston assembly and a screw rod. The bottom of the pressure-stabilizing base is fixed in the pressure-stabilizing part. The pressure-stabilizing spring is arranged between the pressure-stabilizing base and the piston assembly. The screw rod passes through the through hole in the middle of the piston assembly and is slidably connected with the piston assembly. The piston assembly divides the space in the pressure-stabilizing part into a pressure-stabilizing chamber and a water-passing chamber. The water-passing chamber is connected to the main channel and the water outlet through a secondary channel. A screw water-passing channel is arranged inside the screw rod. The screw water-passing channel connects the main channel and the pressure-stabilizing chamber. A water-passing retaining ring is arranged at the bottom of the screw rod. A plurality of piston water-passing grooves are arranged on the top of the piston assembly. A piston water-passing notch is arranged at the outer end of the piston water-passing groove.

2. A dynamic balancing valve according to claim 1, characterized in that: It also includes a filtering mechanism, which is arranged in a filtering part at the lower part of the valve body and is used for filtering the liquid flow entering the valve body.

3. A dynamic balancing valve according to claim 2, characterized in that: The filtering mechanism comprises a filtering retaining ring, and the middle part of the filtering retaining ring is provided with evenly distributed filtering holes.

4. A dynamic balancing valve according to claim 2, characterized in that: It also includes a sewage discharge mechanism, which is detachably installed at the lower end of the filter part. The sewage discharge mechanism includes a sewage discharge sleeve, one end of the sewage discharge sleeve is connected to the filter part, and the other end is provided with a sewage discharge port. A sewage discharge ball valve is provided inside the sewage discharge sleeve, and the sewage discharge ball valve is connected to the sewage discharge switch outside the sewage discharge sleeve.

5. A dynamic balancing valve according to claim 1, characterized in that: It also includes a flow regulating mechanism, which is arranged in the valve cap and is used to control the valve flow.

6. A dynamic balancing valve according to claim 5, characterized in that: The flow regulating mechanism includes a return spring, a positioning gasket, an E-type retaining ring and a decorative cover which are sequentially sleeved on the screw rod from bottom to top. The decorative cover and the valve cap are threadedly connected. The bottom of the return spring is connected to the valve cap, and the upper end is connected to the screw rod through the positioning gasket and the E-type retaining ring.

7. A dynamic balancing valve according to claim 6, characterized in that: The decorative cover is sleeved with a gasket, the gasket is provided with a scale, the decorative cover is provided with a pointer, the pointer cooperates with the scale to indicate the flow rate, and the top of the decorative cover is provided with a valve magnetic lock.

8. The dynamic balancing valve according to claim 1, characterized in that: The piston assembly includes a pressure-stabilizing piston and an elastic valve. The pressure-stabilizing piston is sleeved on the screw rod and is slidably connected to the screw rod. The inner end of the elastic valve is sealed to the pressure-stabilizing piston, and the outer end is sealed to the inner wall of the pressure-stabilizing part.

9. The dynamic balancing valve according to claim 1, characterized in that: The valve body and the valve cap are fixedly connected by screws, a sealing ring is arranged at the connection, and a temperature sensing groove is also arranged on the valve body.

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