A flow control device for HVAC water circulation system

Abstract

This application relates to the field of water flow control technology, and in particular to a flow control device for an HVAC water circulation system. The device includes a control unit comprising a protective cover, a fixed plate on one side of the protective cover, and a long pipe A at the end of the fixed plate away from the protective cover. One end of the long pipe A passes through and is fixedly connected to a long pipe B. A fixed plate is fixedly connected to the circumference of the long pipe B. A throttling device is externally mounted on the control unit, comprising a motor. A fixed rod is fixedly connected to the output shaft of the motor. A gear A passes through and is rotatably connected to the fixed rod at the end away from the motor. This invention, through the coordinated arrangement of components such as the gear, rotating rod, and long plate, achieves vertical displacement of the long plate and control pipe connected to the rotating rod by the rotation of the gear driven by the motor, thus achieving energy-saving drainage.

Description

Technical Field

[0001] This application relates to the technical field of water flow control, and in particular to a flow control device for an HVAC water circulation system. Background Technology

[0002] Water, as one of the sources of life, is essential for the survival of all life on Earth. According to statistics from the Ministry of Water Resources, 400 out of 669 cities in China suffer from insufficient water supply, and 110 are severely water-scarce. If everyone saves just one drop of water every day, it can sustain a city. The number of water-scarce regions worldwide is even greater, and more than 2.2 million people die globally each year due to water shortages. This demonstrates the preciousness of water resources. In the Middle East, there's even a saying that water is more expensive than oil. Water conservation and civilized water use have become one of the themes of modern civilization, and how to conserve water resources has become a hot topic. However, in daily life, there are many instances of water waste, some man-made, and some unknown to many. In my country, rotary decanters are commonly used. These decanters use mechanical pushers to drive the decanting vertical pipe, causing the decanting weir to descend and drain the water from the pool. Their advantage lies in the weir-flow method, resulting in a more uniform water discharge. However, during the descent of the weir, if the motor speed remains constant, the angular velocity of the weir opening also remains constant, while the vertical component of the descent velocity gradually increases. This results in a gradual increase in the decanting volume, leading to a significant difference in the outflow. A large outflow at the rear end can cause mud carryover or submerge subsequent structures. Therefore, the main solution currently considered by manufacturers is to use a variable frequency drive (VFD) to divide the entire decanter operation time into several segments, for example, five segments. As the decanter descends, the descent frequency is gradually reduced in each segment to control the final decanting volume from becoming excessive. This solution has some drawbacks. First, within each frequency segment, the decanting volume increases from small to large, with a larger volume at the rear end, which can easily lead to mud carryover. Secondly, the decanting time of the circulating activated sludge (CAST) process is generally fixed, but the water level during decanting varies depending on the water volume. However, the decanter generally cannot automatically adjust its operating speed according to the water level. When the water level is low, the actual decanting time is short, and the operation is not reasonable.

[0003] A search revealed Chinese Patent Publication No. CN103591322A, which discloses a water flow control device. The device includes a switch, a power supply, a control module, a motor, and an coded keypad. The control module is connected to the switch, the coded keypad, and the motor. The power supply is connected to the control module via the switch. One end of a flow-damping box is connected to a water pipe, and the other end has an outlet. The coded keypad is located on the surface of the control panel and controls the motor's operation via the control module. One end of a flow-damping plate passes through the side of the flow-damping box and is horizontally movable inside the box. The other end of the flow-damping plate is located outside the box and connected to the motor, which controls the horizontal movement of the flow-damping plate to control the water flow rate. This invention uses a motor to control the movement of the flow-damping plate to block and release water flow, achieving more effective water conservation. Users can select the water flow rate by inputting through the coded keypad according to their actual needs. The design is simple, practical, and convenient, and is worthy of promotion.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: existing HVAC water circulation system flow control devices cannot automatically control and adjust the water flow rate, resulting in significant water waste. Therefore, it is necessary to provide an HVAC water circulation system flow control device. Summary of the Invention

[0005] To address the problems mentioned in the background section, this application provides a flow control device for an HVAC water circulation system, which automatically controls and regulates the water flow rate.

[0006] This application provides a flow control device for an HVAC water circulation system, which adopts the following technical solution: it includes a control device, the control device includes a protective cover, a fixing plate is provided on one side of the protective cover, a long pipe A is provided at the end of the fixing plate away from the protective cover, a long pipe B is passed through one end of the long pipe A and is fixedly connected to the long pipe B, and a fixing plate is fixedly connected to the circumferential surface of the long pipe B.

[0007] Optionally, the number of the fixing plates is two, and they are symmetrical to each other along the vertical central axis of the long tube B.

[0008] Optionally, the fixing plate is located between the protective cover and the long tube B, wherein the long tube A is made of metal and the long tube B is made of metal.

[0009] Optionally, a throttling device is provided externally for the control device. The throttling device includes a motor, with a fixed rod fixedly connected to the output shaft of the motor. A gear A passes through the fixed rod at the end away from the motor and is rotatably connected to the gear A. A fixed block is fixedly connected to the end of the gear A away from the fixed rod. A long rod passes through the fixed block at the side away from the gear A and is fixedly connected to the long rod. One side of the gear A meshes with a gear B. A rotating rod passes through the end of the gear B away from the motor and is rotatably connected to the rotating rod. A short rod passes through the rotating rod at the end away from the gear B and is slidably connected to the short rod. A long plate is fixedly connected to the end of the short rod away from the rotating rod. A short plate is fixedly connected to one side of the long plate. A control tube passes through the long plate at the side away from the short rod and is fixedly connected to the control tube. A sealing gasket is fitted on the circumferential surface of the control tube, and a control ring is fitted on the inner wall of the long tube B.

[0010] Optionally, one end of the long rod passes through a short plate and is slidably connected to the short plate, and the gear B is located between the motor and the long plate.

[0011] Optionally, the control ring is sleeved on the inner wall of the long tube B, and the fixing block is located between the gear A and the short plate.

[0012] In summary, this application has the following beneficial technical effects: By setting up components such as gears, rotating rods and long plates to cooperate with each other, this utility model realizes that the long plate and control pipe connected by the rotating rod are vertically displaced by the rotation of the gear driven by the motor, thereby achieving the effect of energy-saving drainage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional appearance structure in the embodiments of this application; Figure 2 This is a schematic diagram of the internal structure of the protective cover in an embodiment of this application; Figure 3 This is a schematic diagram of the gear structure in an embodiment of this application; Figure 4 This is a schematic diagram of the internal structure of the long tube in an embodiment of this application.

[0014] Reference numerals: 1. Control device; 101. Protective cover; 102. Fixing plate; 103. Long tube A; 104. Long tube B; 105. Fixing plate; 2. Throttling device; 201. Motor; 202. Fixing rod; 203. Gear A; 204. Fixing block; 205. Long rod; 206. Gear B; 207. Rotating rod; 208. Short rod; 209. Long plate; 210. Short plate; 211. Control tube; 212. Sealing gasket; 213. Control ring. Detailed Implementation

[0015] The following is in conjunction with the appendix Figures 1-4This application will be described in further detail.

[0016] This application discloses a flow control device for an HVAC water circulation system. For example... Figures 1-2 As shown, the device includes a control device 1, which includes a protective cover 101. A fixing plate 102 is provided on one side of the protective cover 101. This design is beneficial for protecting the internal device through the protective cover 101. The fixing plate 102 is located between the protective cover 101 and the long pipe B104. A long pipe A103 is provided at the end of the fixing plate 102 away from the protective cover 101. One end of the long pipe A103 passes through the long pipe B104 and is fixedly connected to the long pipe B104. This design is beneficial for draining water through the passage of the long pipe A103 and the long pipe B104. The long pipe A103 is made of metal, and the long pipe B104 is made of metal. A fixing plate 105 is fixedly connected to the circumferential surface of the long pipe B104. This design is beneficial for protecting the long pipe A103 and the long pipe B104 through the fixing plate 105.

[0017] Please see Figure 3 and Figure 4 The control device 1 is externally equipped with a throttling device 2, which includes a motor 201. A fixed rod 202 is fixedly connected to the output shaft of the motor 201. A gear A203 passes through the fixed rod 202 away from the motor 201 and is rotatably connected to the gear A203. A fixed block 204 is fixedly connected to the gear A203 away from the fixed rod 202. This design facilitates the fixation of the long rod 205 to the fixed block 204 via the fixed block 204. The fixed block 204 is located between the gear A203 and the short plate 210. A long rod 205 passes through the side away from the gear A203 and is fixedly connected to the long rod 205. This design facilitates the horizontal displacement of the short plate 210 via the long rod 205. One end of the long rod 205 passes through the short plate 210 and is slidably connected to the short plate 210. One side of the gear A203 meshes with a gear B206. The end of the gear B206 away from the motor 201 passes through... A rotating rod 207 is inserted through and rotatably connected to the rotating rod 207. A short rod 208 passes through the end of the rotating rod 207 away from the gear B206 and is slidably connected to the short rod 208. A long plate 209 is fixedly connected to the end of the short rod 208 away from the rotating rod 207. The above design is conducive to driving the rotation of the rotating rod 207 through the meshing of the gear B206 and the gear A203. The gear B206 is located between the motor 201 and the long plate 209. A short plate 210 is fixedly connected to one side of the long plate 209. A control tube 211 passes through the side of the long plate 209 away from the short rod 208 and is fixedly connected to the control tube 211. A sealing gasket 212 is fitted on the circumferential surface of the control tube 211. A control ring 213 is fitted on the inner wall of the long tube B104. The above design is conducive to controlling the water flow when the control tube 211 contacts the control ring 213. The control ring 213 is fitted on the inner wall of the long tube B104. The implementation principle of the HVAC water circulation system flow control device in this application embodiment is as follows: This application drives the rotating rod 202 through the motor 201, thereby causing the gear A203 sleeved on the rotating rod 202 to rotate. When gear A203 and gear B206 mesh, they drive the rotating rod 207 to rotate, thereby causing the short rod 208 to extend and retract vertically, and then causing the long plate 209 to move horizontally, thereby causing the control pipe 211 penetrating through the long plate 209 to move horizontally. When water flows into the long pipe A103 and long pipe B104, the sealing gasket 212 prevents water from flowing out, thus forming a closed loop and achieving the function of water circulation. When the control pipe 211 is closer to the central hole of the control ring 213, the water flow is smaller; the farther away from the control ring 213, the larger the water flow. In this way, the opening of the central hole can be adjusted to control the water flow speed, optimize the circulation efficiency, and achieve the function of automatically controlling and regulating the water flow rate, thereby significantly improving the water resource utilization rate and reducing the environmental burden.

[0018] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flow control device for an HVAC water circulation system, comprising a control device (1), characterized in that: The control device (1) includes a protective cover (101). A fixing plate (102) is provided on one side of the protective cover (101). A long tube A (103) is provided at one end of the fixing plate (102) away from the protective cover (101). A long tube B (104) passes through one end of the long tube A (103) and is fixedly connected to the long tube B (104). A fixing plate (105) is fixedly connected to the circumferential surface of the long tube B (104).

2. The HVAC water circulation system flow control device according to claim 1, characterized in that: The number of fixed plates (105) is two, and they are symmetrical to each other along the vertical central axis of the long tube B (104).

3. The HVAC water circulation system flow control device according to claim 1, characterized in that: The fixed plate (102) is located between the protective cover (101) and the long tube B (104). The long tube A (103) is made of metal, and the long tube B (104) is made of metal.

4. The HVAC water circulation system flow control device according to claim 1, characterized in that: A throttling device (2) is provided outside the control device (1). The throttling device (2) includes a motor (201). A fixed rod (202) is fixedly connected to the output shaft of the motor (201). A gear A (203) passes through the fixed rod (202) away from the motor (201) and is rotatably connected to the gear A (203). A fixed block (204) is fixedly connected to the gear A (203) away from the fixed rod (202). A long rod (205) passes through the fixed block (204) away from the gear A (203) and is fixedly connected to the long rod (205). One side of the gear A (203) meshes with a gear B (206). The gear B (206) is away from the gear B (206). One end of the motor (201) is connected to a rotating rod (207) and rotates to the rotating rod (207). The end of the rotating rod (207) away from the gear B (206) is connected to a short rod (208) and slides to the short rod (208). The end of the short rod (208) away from the rotating rod (207) is fixedly connected to a long plate (209). The side of the long plate (209) is fixedly connected to a short plate (210). The side of the long plate (209) away from the short rod (208) is connected to a control tube (211) and is fixedly connected to the control tube (211). A sealing gasket (212) is fitted on the circumferential surface of the control tube (211). A control ring (213) is fitted on the inner wall of the long tube B (104).

5. The HVAC hydronic system flow control device of claim 4, wherein: One end of the long rod (205) passes through the short plate (210) and is slidably connected to the short plate (210). The gear B (206) is located between the motor (201) and the long plate (209).

6. The HVAC water circulation system flow control device according to claim 4, characterized in that: The control ring (213) is sleeved on the inner wall of the long tube B (104), and the fixing block (204) is located between the gear A (203) and the short plate (210).

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