Static balance valve

Abstract

The utility model provides a static balance valve, belongs to the technical field of balance valves, and solves the problems of lower applicability and higher cost of the existing valve seat. The static balance valve comprises a valve body, a water inlet cavity, a water outlet cavity, a flow guide channel and a valve seat are arranged in the valve body, the water inlet cavity and the water outlet cavity are communicated through the flow guide channel, the static balance valve further comprises a gasket and a baffle, the gasket is arranged on the valve seat in a sleeved mode, and the gasket is detachably fixed to the valve seat through the baffle and the valve seat. The baffle can extend into the flow guide channel, and the valve seat can move in the valve body to enable the gasket to be cut off or be communicated with the flow guide channel. According to the static balance valve, the applicability of the valve seat is improved, and meanwhile the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of balancing valves and relates to a static balancing valve. Background Art

[0002] In a constant flow system, due to the influence of factors such as the initial design, material selection, and connection installation, it is inevitable that the actual flow value of some loops is different from the design required flow value, resulting in static hydraulic imbalance.

[0003] Static hydraulic imbalance is steady-state and fundamental, and is inherent in the system itself. However, conventional pipelines are straight-through and cannot adjust and balance static hydraulics, causing the actual flow to be inconsistent with the design flow.

[0004] To this end, a Chinese patent application (application number: 201120151613.7) discloses a small-caliber static hydraulic balancing valve, including a valve body, the two ends of the main valve body are sealed and connected with pipe threads, the main valve body is provided with a flow regulating device and two pressure measuring devices, the flow regulating device includes a valve cover, a valve core and a valve seat threadedly connected with the valve core, the valve seat divides the main valve body into a water inlet chamber and a water outlet chamber, the two pressure measuring devices are respectively connected with the water inlet chamber and the water outlet chamber, and the valve seat rises or falls under the force of the valve core and respectively abuts against or leaves a gap between the valve port in the middle of the main valve body. By changing the gap between the valve port and the valve seat, the flow resistance flowing through the valve is changed to achieve the purpose of regulating the flow.

[0005] However, the above method has the following defects: 1. Different scenarios have different requirements for the upper and lower limits of the flow rate, and multiple valve seats of different sizes need to be prepared, and the applicability of the valve seat is poor. 2. During the process of rising and falling, the valve seat frequently rubs against the side wall of the valve port in the middle of the main valve body, causing great wear. If this part is worn, the entire valve seat needs to be replaced, which is costly. Utility Model Content

[0006] The purpose of the utility model is to propose a static balancing valve in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to improve the applicability of the valve seat and reduce the cost at the same time.

[0007] The purpose of the utility model can be achieved through the following technical solutions: a static balancing valve, including a valve body, a water inlet chamber, a water outlet chamber, a guide channel and a valve seat are arranged in the valve body, the water inlet chamber and the water outlet chamber are connected through the guide channel, the static balancing valve also includes a gasket and a baffle, the gasket is sleeved on the valve seat, the baffle and the valve seat can detachably fix the gasket on the valve seat, the baffle can extend into the guide channel, and the valve seat can move in the valve body to make the gasket cut off or connect the guide channel.

[0008] The valve seat of the static balancing valve moves up and down in the valve body, aligns the end of the valve seat with the baffle with the diversion channel, moves the valve seat downward, and moves the baffle downward in the diversion channel until the gasket presses against the channel opening of the diversion channel. At this time, the static balancing valve is in a cut-off state. The fluid flows in from the opening of the water inlet chamber, moves the valve seat upward, moves the baffle upward in the diversion channel, and the gasket leaves the channel opening of the diversion channel. The fluid flows from the channel opening of the diversion channel to the opening of the water outlet chamber. In the face of different scenarios, there is no need to replace the valve seat, and a baffle of suitable size can be selected for installation, and the applicability of the valve seat is significantly improved. When the static balancing valve is working, the gasket and the baffle jointly protect the valve seat from wear. The gasket and the baffle can be replaced regularly without replacing the entire valve seat, which reduces the cost. The baffle extends into the diversion channel and moves up and down in the diversion channel to prevent the gasket from deviating from the channel opening of the diversion channel and affecting the sealing effect.

[0009] In the static balancing valve, the guide channel is cylindrical, the baffle includes a guide portion, and the guide portion is truncated. A gap that gradually increases from top to bottom is formed between the guide portion and the inner wall of the guide channel to avoid large wear caused by friction during the up and down movement.

[0010] In the above-mentioned static balancing valve, the baffle plate further comprises a step portion, the valve seat comprises an annular convex edge, the baffle plate is connected to the valve seat to fix the gasket between the step portion and the convex edge. The gasket is fixed between the step portion and the convex edge and is tightly pressed against the step surface of the step portion, which helps to make the gasket more firmly fixed.

[0011] In the above static balancing valve, the baffle is threadedly connected to the valve seat, and the convex edge and the step portion clamp and fix the gasket. Tightening the baffle can make the convex edge and the step portion clamp and fix the gasket. This not only helps to make the gasket more firmly fixed, but also makes the installation and removal of the baffle and the gasket convenient.

[0012] In the static balancing valve, a flow guiding cavity is further provided in the valve body, the flow guiding cavity is connected with the flow guiding channel and the water outlet cavity, and a gap is left between the convex edge and the inner wall of the flow guiding cavity. The gap is left between the convex edge and the inner wall of the flow guiding cavity, so as to avoid the friction between the convex edge and the inner wall of the flow guiding cavity and generate large wear during the up and down movement of the valve seat.

[0013] Compared with the prior art, the hook connection structure of the binder has the following advantages:

[0014] 1. This static balancing valve does not need to replace the valve seat in different scenarios. Just select a baffle of suitable size for installation, and the applicability of the valve seat is significantly improved.

[0015] 2. When the static balancing valve is working, the gasket and the baffle jointly protect the valve seat from wear. It is only necessary to replace the gasket and the baffle regularly instead of replacing the entire valve seat, thus reducing costs.

[0016] 3. In the static balancing valve, the baffle extends into the guide channel and moves up and down in the guide channel to prevent the gasket from deviating from the channel opening of the guide channel and affecting the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the static balancing valve.

[0018] Figure 2 This is a top view of the static balancing valve.

[0019] Figure 3 yes Figure 2 A local enlarged view along the AA direction.

[0020] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0021] Figure 5 yes Figure 4 A partial enlarged view of the center C

[0022] In the figure, 1, valve body; 2, water inlet chamber; 3, water outlet chamber; 4, diversion channel; 5, valve seat; 5a, convex edge; 6, gasket; 7, baffle; 7a, guide part; 7b, step part; 8, diversion chamber. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0025] like Figure 1-Figure 5 As shown, the static balancing valve includes a valve body 1, in which a water inlet chamber 2, a water outlet chamber 3, a guide chamber 8, a guide channel 4 and a valve seat 5 are provided. The water inlet chamber 2 and the water outlet chamber 3 are connected through the guide channel 4. The guide channel 4 is cylindrical, and the guide chamber 8 is connected with the guide channel 4 and the water outlet chamber 3.

[0026] The valve seat 5 includes an annular convex edge 5a, and a gap is left between the convex edge 5a and the inner wall of the diversion chamber 8. The gap is left between the convex edge 5a and the inner wall of the diversion chamber 8 to avoid friction between the convex edge 5a and the inner wall of the diversion chamber 8 during the up and down movement of the valve seat 5.

[0027] The valve seat 5 is detachably sleeved with a gasket 6 and a baffle 7 that can extend into the flow guide channel 4. The baffle 7 includes a guide portion 7a and a step portion 7b. The guide portion 7a is in a truncated cone shape that is smaller at the bottom and larger at the top, and a gap that gradually increases from top to bottom can be formed between the guide portion 7a and the inner wall of the flow guide channel 4. A gap is directly left between the guide portion 7a and the inner wall of the flow guide channel 4 to avoid significant wear caused by friction during the up and down movement.

[0028] The baffle plate 7 is threadedly connected to the valve seat 5. The baffle plate 7 is tightened so that the convex edge 5a and the step portion 7b clamp and fix the gasket 6. At this time, the gasket 6 is tightly pressed against the step surface of the step portion 7b. The gasket 6 is clamped and fixed between the step portion 7b and the convex edge 5a and pressed against the step surface of the step portion 7b, which not only helps to make the fixation of the gasket 6 more stable, but also makes the installation and disassembly of the baffle plate 7 and the gasket 6 convenient.

[0029] The valve seat 5 of the static balancing valve moves up and down in the valve body 1, and the end of the valve seat 5 with the baffle 7 is aligned with the diversion channel 4, and the valve seat 5 is moved downward, and the baffle 7 moves downward in the diversion channel 4 until the gasket 6 presses against the channel opening of the diversion channel 4. At this time, the static balancing valve is in a cut-off state. The fluid flows in from the opening of the water inlet chamber 2, moves the valve seat 5 upward, and the baffle 7 moves up in the diversion channel 4. The gasket 6 leaves the channel opening of the diversion channel 4, and the fluid flows from the channel opening of the diversion channel 4 through the diversion chamber 8 to the opening of the water outlet chamber 3.

[0030] This static balancing valve can be used in different scenarios without replacing the valve seat 5. It only needs to select a baffle 7 of suitable size for installation, and the applicability of the valve seat 5 is significantly improved. When the static balancing valve is working, the gasket 6 and the baffle 7 jointly protect the valve seat 5 from wear. The gasket 6 and the baffle 7 can be replaced regularly without replacing the entire valve seat 5, which reduces the cost. The baffle 7 extends into the guide channel 4 and moves up and down in the guide channel 4 to prevent the gasket 6 from deviating from the channel opening of the guide channel 4 and affecting the sealing effect.

[0031] Although the terms valve body 1, water inlet chamber 2, water outlet chamber 3, flow guide channel 4, valve seat 5, convex edge 5a, gasket 6, baffle 7, guide portion 7a, step portion 7b, flow guide chamber 8 and the like are frequently used in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional limitation is contrary to the spirit of the utility model.

Claims

1. A static balancing valve, comprising a valve body (1), wherein the valve body (1) is provided with a water inlet chamber (2), a water outlet chamber (3), a flow guide channel (4) and a valve seat (5), wherein the water inlet chamber (2) and the water outlet chamber (3) are connected via the flow guide channel (4), and characterized in that: The static balancing valve further comprises a gasket (6) and a baffle (7); the gasket (6) is sleeved on the valve seat (5); the baffle (7) and the valve seat (5) are detachably connected to fix the gasket (6) on the valve seat (5); the baffle (7) can extend into the guide channel (4); and the valve seat (5) can move in the valve body (1) to make the gasket (6) cut off or connect the guide channel (4).

2. A static balancing valve according to claim 1, characterized in that: The guide channel (4) is cylindrical, and the baffle (7) comprises a guide portion (7a), and the guide portion (7a) is truncated cone-shaped.

3. A static balancing valve according to claim 1 or 2, characterized in that: The baffle (7) further comprises a step portion (7b), the valve seat (5) comprises an annular convex edge (5a), and the baffle (7) is connected to the valve seat (5) to fix the gasket (6) between the step portion (7b) and the convex edge (5a).

4. A static balancing valve according to claim 3, characterized in that: The baffle (7) is threadedly connected to the valve seat (5), and the convex edge (5a) and the step portion (7b) clamp and fix the gasket (6).

5. A static balancing valve according to claim 4, characterized in that: A flow guide chamber (8) is also provided in the valve body (1), the flow guide chamber (8) is in communication with the flow guide channel (4) and the water outlet chamber (3), and a gap is left between the convex edge (5a) and the inner wall of the flow guide chamber (8).

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