Air volume valve display platform

Abstract

The utility model discloses an air volume valve display platform, which belongs to the technical field of demonstration and comprises a display stand, an air inlet pipe and an air outlet pipe are arranged on the display stand, an air source device is arranged in the display stand, one end of the air source device is connected with the air inlet pipe, the other end of the air source device is connected with the air outlet pipe, and an air volume valve is arranged at the input end of the air inlet pipe. And a display device is also arranged on the display stand. According to the scheme, the air source device can generate power so that air circulation can be generated between the air inlet pipe and the air outlet pipe, the air flow and stability in the air inlet pipe can be adjusted by adjusting the opening size of the air volume valve, and finally the flowing effect of airflow can be visually reflected from the display device; and finally, a user can dynamically and visually feel the actual performance and effect of the air volume valve.

Description

Technical Field

[0001] The utility model relates to a demonstration platform, and more specifically, to an air volume valve display platform. Background Art

[0002] The air volume valve is an indispensable accessory in the ventilation, air conditioning and air purification projects of industrial plants and civil buildings. The performance of the air volume valve cannot be intuitively judged. In order to enable users to more intuitively understand the quality and performance of the air volume valve, an air volume valve display platform needs to be designed; however, there is no relatively mature visual air volume valve display platform in the prior art.

[0003] For example: Chinese Patent Publication No. CN207781053U, Publication Date: August 28, 2018, the name of the utility model is a one-way sequence valve model for teaching demonstration. This application discloses a valve body demonstration model, including a valve body demonstration base. In the middle of the upper surface of the valve body demonstration base, there are a piston placement groove and a valve core placement groove in sequence from left to right. The right end of the piston placement groove is connected to the left end of the valve core placement groove. The left end of the piston placement groove is provided with a handle demonstration block. In the middle of the front part of the upper surface of the valve body demonstration base, there is an oil drain oil circuit demonstration groove. On the right side of the front part of the upper surface of the valve body demonstration base, there is an oil outlet oil circuit demonstration groove. On the right side of the rear part of the upper surface of the valve body demonstration base, there is a P2 oil circuit demonstration groove. On the right side of the P2 oil circuit demonstration groove on the rear part of the upper surface of the valve body demonstration base, there is a P1 oil circuit demonstration groove. However, this solution is applicable to teaching and cannot be applied to the air volume valve, and more importantly, it cannot show the specific performance of the valve body. Summary of the Utility Model

[0004] The utility model overcomes the problem that the existing valve body display platform cannot specifically display the performance of the air volume valve; provides an air volume valve display platform. This solution can specifically display the air volume control accuracy and air volume control stability of the air volume valve, and provide users with a visual feeling of the product quality of the air volume valve.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions: An air volume valve display platform, including a display table, an air inlet pipe and an air outlet pipe are arranged on the display table. An air source device is arranged in the display table. One end of the air source device is connected to the air inlet pipe, and the other end of the air source device is connected to the air outlet pipe. An air volume valve is arranged at the input end of the air inlet pipe; a display device is also arranged on the display table. In this solution, the air source device can generate power to cause air volume circulation between the air inlet pipe and the air outlet pipe. By adjusting the opening size of the air volume valve, the gas flow rate and stability in the air inlet pipe can be adjusted, and finally the flow effect of the air flow is intuitively reflected from the display device, so that users can dynamically and visually feel the actual performance and effect of the air volume valve.

[0006] Preferably, the air inlet pipe includes a first air inlet pipe and a second air inlet pipe, and the first air inlet pipe and the second air inlet pipe are communicated with the air source device through a tee pipe. Two air inlet pipes can be arranged on the display platform, so that the air volume control accuracy, stability, etc. of two air volume valves can be demonstrated; through the tee pipe, the first air inlet pipe and the second air inlet pipe can be combined and arranged on the display platform to simplify the connection of the pipeline.

[0007] Preferably, a shut-off valve is provided in the air inlet pipe. The shut-off valve can control the on-off state of the air inlet pipe. When air inlet is required, the shut-off valve is in the open state; when air inlet is not required or when switching to different pipelines, the shut-off valve is in the closed state.

[0008] Preferably, a first rectifying net is provided between the tee pipe and the air volume valve, and a second rectifying net is provided between the tee pipe and the air source device. The first rectifying net and the second rectifying net are used to rectify the air flow in the air inlet pipe, which can reduce the turbulence inside the pipeline, make the air volume in the pipeline uniform and stable, and make the measured air volume more accurate.

[0009] Preferably, the connection mode between the air inlet pipe and the air source device and the connection mode between the air outlet pipe and the air source device both adopt canvas flexible connection. Both the air inlet pipe and the air outlet pipe adopt canvas flexible connection with the air source device, which can reduce the influence of the vibration generated by the air source device on the air inlet pipe and the air outlet pipe.

[0010] Preferably, a Venturi nozzle is provided on the air inlet pipe near the air source device side, and a differential pressure gauge is provided at the Venturi nozzle. The Venturi nozzle is used to measure the ventilation volume in the air pipe, collect the pressure difference values at both ends of the Venturi nozzle and feedback them to the upper computer. The flow rate of the air pipe is calculated through a formula and displayed on the upper computer in real time, and is plotted into a curve. The smoothness of the curve can reflect the smoothness of the air volume control accuracy of the valve.

[0011] Preferably, a bracket is provided on the display platform, and the display device includes an upper computer arranged on the bracket. The upper computer can real-time feedback parameters such as the flow rate and flow velocity in the air outlet pipe, and the display effect is more accurate. In addition, the upper computer also serves as the system control of the display platform, making it more intelligent.

[0012] Preferably, the display device further includes an air outlet pipe arranged on the display platform. A floating ball is provided in the air outlet pipe, and the air outlet pipe is a transparent pipe. By arranging a floating ball in the air outlet pipe, the floating ball will float when the gas in the air outlet pipe flows out, and the air outlet pipe can be set to be transparent, making the display effect more intuitive.

[0013] Preferably, a third rectifying net is provided inside the air outlet pipe and below the floating ball. The third rectifying net can rectify the air flow coming out of the air outlet pipe, and can reduce the disturbance effect of the air source device on the floating ball.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: (1) It can specifically display the air volume control accuracy and air volume control stability of the air volume valve, providing users with a visual perception of the product quality of the air volume valve; (2) The air duct and the air source device are connected by a flexible connection, reducing the influence of the vibration of the air source device on the display effect; (3) It has an accurate display effect and a dynamic visual intuitive effect, improving users' confidence in the product; (4) This solution can simulate the building ventilation system and truly reflect the performance of the air volume valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present utility model.

[0016] Figure 2 It is a sectional view of the present utility model.

[0017] Figure 3 It is a schematic diagram of Embodiment 2 of the present utility model.

[0018] Figure 4 It is a side view of Embodiment 2 of the present utility model.

[0019] Figure 5 For Figure 4 the sectional view in the A-A direction in

[0020] Figure 6 It is a top view of Embodiment 2 of the present utility model.

[0021] In the figure: 1. display stand, 2. air inlet pipe, 2.1. first air inlet pipe, 2.2. second air inlet pipe, 2.3. main air inlet pipe, 3. air outlet pipe, 4. air source device, 5. air volume valve, 5.1. first air volume valve, 5.2. second air volume valve, 6. tee pipe, 7. shut-off valve, 8.1. first rectifying net, 8.2. second rectifying net, 8.3. third rectifying net, 9. Venturi nozzle, 10. bracket, 11. upper computer, 12. floating ball, 13. support frame, 14. door body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will further specifically illustrate the technical solutions of the present utility model through specific embodiments in conjunction with the drawings.

[0023] Embodiment 1: As shown in Figure 1 and Figure 2A kind of air volume valve display platform shown in the figure includes a display stand 1. A rectangular frame support 10 is arranged on the display stand 1. The support 10 is arranged on one side of the display stand 1. A horizontally arranged air inlet pipe 2 is arranged at the top of the support 10. Vertically arranged air inlet pipes 2 are arranged on both sides of the support 10. All the air inlet pipes 2 are connected together. An air volume valve 5 is arranged on one side of the input end of the air inlet pipe 2. The output end side of the air inlet pipe 2 extends from the upper surface of the display stand 1 into the interior of the display stand 1. An air source device 4 is also arranged inside the display stand 1. The output end of the air inlet pipe 2 is communicated with the air source device 4. The other end of the air source device 4 is connected with an air outlet pipe 3. The air outlet pipe 3 is communicated with the air inlet pipe 2 through the air source device 4. The input end of the air outlet pipe 3 is located inside the display stand 1 and connected with the air source device 4. The output end of the air outlet pipe 3 is located on the upper surface of the display stand 1 and is in a vertically arranged state.

[0024] Among them, the air source device 4 is a fan. When the fan works, it can make the gas in the air inlet pipe 2 and the air outlet pipe 3 flow, so that the air flows into the input end of the air inlet pipe 2 and is discharged from the output end of the air outlet pipe 3. Since an air volume valve 5 is also arranged in the air inlet pipe 2, the air volume valve 5 can adjust and control the air flow rate at the input end of the air inlet pipe 2. When using this device, by adjusting the valve, the flow rate of the air inlet pipe 2 can be kept constant. The more mainstream air volume valves 5 in the market are Venturi valves and butterfly valves, which are commonly used for the control and adjustment of the air volume in the ventilation system. The Venturi valve or the butterfly valve is selected to control the flow rate of the air pipe system on the display stand 1 to detect and display the performance of the Venturi valve or the butterfly valve.

[0025] An upper computer 11 is arranged on the support 10. The upper computer 11 can be used as a display device for displaying the parameters of the gas in the air pipe system, including pressure, flow velocity, flow rate, etc.; thus, the above two or more air volume valves 5 can be well tested, and the test results can be directly displayed so that users can better understand the performance of the air volume valve 5 products.

[0026] The interior of the display stand 1 is a hollow structure. A support frame 13 is arranged inside the display stand 1. The support frame 13 is used for installing and supporting the air source device 4. The air source device 4 is arranged directly below the air outlet pipe 3. A door body 14 is also opened on one side of the display stand 1. Opening the door body 14 can observe the installation of the internal structure of the display stand 1 and is also convenient for the maintenance of the display stand 1 when it fails.

[0027] A shut-off valve 7 is also arranged on the air inlet pipe 2 arranged on the bracket 10. The shut-off valve 7 can control the on-off status of the air inlet pipe 2. When the air volume valve 5 is tested, the shut-off valve 7 is in an open state to ensure that the air volume in the air inlet pipe 2 is unobstructed; when the air volume valve 5 is tested or the test is suspended, the shut-off valve 7 can be closed, and the air volume in the air inlet pipe 2 is no longer circulated. Specifically, the shut-off valve 7 is a baffle structure, and is rotatably arranged on the air inlet pipe 2, including a rotating shaft, which is rotatably arranged inside the air inlet pipe 2, and the baffle is fixed on the rotating shaft, and the size of the baffle is adapted to the cross-sectional size of the air inlet pipe 2. The rotating shaft is rotated so that the plane where the baffle is located is in the same position as the cross-sectional size of the air inlet pipe 2, then the shut-off valve 7 is in a closed state, and the rotating shaft is rotated by a certain angle so that the plane where the baffle is located is staggered with the cross-sectional size of the air inlet pipe 2, then the shut-off valve 7 is in an open state, and when the plane where the baffle is located is in a vertical state with the cross-sectional size of the air inlet pipe 2, the opening of the air inlet pipe 2 reaches the maximum. It should be noted that the shut-off valve 7 can be controlled by circuit control and can be directly controlled on the host computer 11 .

[0028] The air inlet pipe 2 is provided with a venturi nozzle 9, which is arranged on the side close to the wind source device 4 and above the display stand 1. A pressure differential meter (not shown in the figure) is arranged on both sides of the venturi nozzle 4. The pressure differential meter can measure the pressure differential value on both sides of the venturi nozzle 9, and the pressure differential value is fed back to the host computer 11. The venturi nozzle 9 is used to test the ventilation volume in the air duct, and the pressure differential value at both ends of the venturi nozzle 9 is collected and fed back to the host computer 11. The flow rate through the air duct is calculated by a formula, displayed in real time on the host computer 11, and then drawn into a curve. The smoothness of the curve can reflect the smoothness of the air volume control accuracy of the air volume valve 5.

[0029] A first rectifying net 8.1 and a second rectifying net 8.2 are also provided in the air inlet pipe 2. The first rectifying net 8.1 is provided near the location of the air volume valve 5, and the second rectifying net 8.2 is provided near the location of the venturi nozzle 9, and is located above and below the venturi nozzle 9, to rectify the airflow entering the venturi nozzle 9 and the airflow coming out of the venturi nozzle 9. The first rectifying net 8.1 and the second rectifying net 8.2 rectify the pipeline airflow of the air inlet pipe 2, which can reduce the turbulence inside the pipeline, make the air volume in the pipeline uniform and stable, and make the measured air volume more accurate. Among them, the first rectifying net 8.1 and the second rectifying net 8.2 are mesh structures composed of a plurality of slender holes, and have a certain axial length, so as to improve the rectifying effect.

[0030] It should be noted that the connections between the wind source device 4 and the air inlet pipe 2 and the air outlet pipe 3 are all soft connections. Specifically, the air inlet pipe 2 and the air outlet pipe 3 are all softly connected to the wind source device 4 using canvas, which can reduce the impact of the vibration generated by the wind source device 4 on the air inlet pipe 2 and the air outlet pipe 3.

[0031] In this solution, the air outlet pipe 3 is a transparent acrylic pipe, and a floating ball 12 is also arranged inside the air outlet pipe 3. When there is air volume discharged from the air outlet pipe 3, the floating ball 12 will fluctuate up and down. Through the up and down fluctuation of the floating ball 12, the stability of the air volume control effect of the air volume valve 5 is visually reflected dynamically.

[0032] A third rectifying net 8.3 is also arranged inside the air outlet pipe 3. The third rectifying net 8.3 is arranged below the floating ball 12. When the air source device 4 discharges air flow into the air outlet pipe 3, it will first pass through the third rectifying net 8.3 for primary rectification to reduce the disturbance effect of the air source device 4 on the floating ball 12, improving the accuracy and reliability of the demonstration. It should be noted that the structure of the third rectifying net 8.3 is the same as that of the first rectifying net 8.1 and the second rectifying net 8.2.

[0033] Embodiment 2: As Figures 1 to 6 shown in a kind of air volume valve display platform, including a display stand 1, a rectangular frame bracket 10 is arranged on the display stand 1. The bracket 10 is arranged on one side of the display stand 1, and an air inlet pipe is arranged on the bracket. In this solution, the air inlet pipe 2 includes a first air inlet pipe 2.1 and a second air inlet pipe 2.2. The first air inlet pipe 2.1 and the second air inlet pipe 2.2 are arranged in parallel. At the top of the bracket 10, the first air inlet pipe 2.1 and the second air inlet pipe 2.2 are arranged horizontally, and on both sides of the bracket 10, the air inlet pipe 2 is arranged vertically. Specifically, the first air inlet pipe 2.1 and the second air inlet pipe 2.2 are two branch pipelines, and the first air inlet pipe 2.1 and the second air inlet pipe 2.2 are connected together through a tee joint 6 to form an air inlet main pipe 2.3.

[0034] A first air volume valve 5.1 is arranged on one side of the input end of the first air inlet pipe 2.1, a second air volume valve 5.2 is arranged on one side of the input end of the second air inlet pipe 2.2, and the output end (air inlet main pipe 2.3) side of the air inlet pipe 2 extends from the upper surface of the display stand 1 into the interior of the display stand 1. An air source device 4 is also arranged inside the display stand 1. The output end of the air inlet pipe 2 is communicated with the air source device 4, and the other end of the air source device 4 is connected with an air outlet pipe 3. The air outlet pipe 3 is communicated with the air inlet pipe 2 through the air source device 4. The input end of the air outlet pipe 3 is located inside the display stand 1 and connected with the air source device 4, and the output end of the air outlet pipe 3 is located on the upper surface of the display stand 1 and is arranged vertically.

[0035] Among them, the air source device 4 is a fan. When the fan works, it can make the gas in the air inlet pipe 2 and the air outlet pipe 3 flow, so that the air flow enters from the input end of the air inlet pipe 2 (including the first air inlet pipe 2.1 and the second air inlet pipe 2.2), and the air flow is discharged from the output end of the air outlet pipe 3. Since the first air volume valve 5.1 and the second air volume valve 5.2 are respectively arranged in the first air inlet pipe 2.1 and the second air inlet pipe 2.2, the first air volume valve 5.1 and the second air volume valve 5.2 can respectively adjust and control the air flow rate at the input ends of the first air inlet pipe 2.1 and the second air inlet pipe 2.2. When using this device, by adjusting the two valves, the flow rates of the first air inlet pipe 2.1 and the second air inlet pipe 2.2 can be kept constant. The more mainstream air volume valves 5 in the market are Venturi valves and butterfly valves, which are commonly used for the control and adjustment of the air volume in the ventilation system. In this solution, the Venturi valve and the butterfly valve can be respectively selected as the first air volume valve 5.1 and the second air volume valve 5.2 to control the flow rate of the air duct system on the display stand 1, so as to detect and display the performance of the Venturi valve or the butterfly valve. Of course, when controlling the air volume, only one of the first air volume valve 5.1 and the second air volume valve 5.2 works to display its own performance alone. In addition, two air inlet pipes 2 are arranged on the display stand 1 at the same time, so that the performance and effects of the two types of air volume valves 5 can be compared to select the appropriate type of air volume valve 5 to meet the needs of users.

[0036] A host computer 11 is arranged on the bracket 10. The host computer 11 can be used as a display device for displaying the parameters of the gas in the air duct system, including pressure, flow velocity, flow rate, etc.; thus, the above two or more types of air volume valves 5 can be well tested and the test results can be directly displayed, so that users can better understand the performance of the air volume valve 5 products.

[0037] The interior of the display stand 1 is a hollow structure. A support frame 13 is arranged inside the display stand 1. The support frame 13 is used to install and support the air source device 4. The air source device 4 is arranged directly below the air outlet pipe 3. A door body 14 is also opened on one side of the display stand 1. Opening the door body 14 can observe the installation of the internal structure of the display stand 1 and is also convenient for the maintenance of the display stand 1 when it fails.

[0038] Shut-off valves 7 are also provided on the first air inlet duct 2.1 and the second air inlet duct 2.2 arranged on the bracket 10. The shut-off valves 7 can control the on-off status of the first air inlet duct 2.1 and the second air inlet duct 2.2. When the air volume valve 5 is tested, the shut-off valve 7 is in an open state to ensure that the air volume in the air inlet duct 2 is unobstructed; when the test of the air volume valve 5 is completed or the test is suspended, the shut-off valve 7 can be closed, and the air volume in the air inlet duct 2 will no longer circulate. Specifically, the shut-off valve 7 is a baffle structure, and is rotatably arranged on the air inlet pipe 2 (the first air inlet pipe 2.1 and the second air inlet pipe 2.2), including a rotating shaft, which is rotatably arranged inside the air inlet pipe 2, and a baffle is fixed on the rotating shaft, and the size of the baffle is adapted to the cross-sectional size of the air inlet pipe 2. The rotating shaft is rotated so that the plane where the baffle is located is in the same position as the cross-sectional size of the air inlet pipe 2, then the shut-off valve 7 is in a closed state, and the rotating shaft is rotated by a certain angle so that the plane where the baffle is located is staggered with the cross-sectional size of the air inlet pipe 2, then the shut-off valve 7 is in an open state, and when the plane where the baffle is located is in a vertical state with the cross-sectional size of the air inlet pipe 2, the opening of the air inlet pipe 2 reaches the maximum. It should be noted that the control of the shut-off valve 7 can be controlled by circuit control, and can be directly controlled on the host computer 11.

[0039] A venturi nozzle 9 is provided on the air inlet main pipe 2.3, and the venturi nozzle 9 is provided on the side close to the tee pipe 6. A pressure differential meter (not shown in the figure) is provided on both sides of the venturi nozzle 4. The pressure differential meter can measure the pressure differential value on both sides of the venturi nozzle 9, and the pressure differential value is fed back to the host computer 11. The venturi nozzle 9 is used to test the ventilation volume in the air duct, and the pressure differential value at both ends of the venturi nozzle 9 is collected and fed back to the host computer 11. The flow rate through the air duct is calculated by a formula, displayed in real time on the host computer 11, and then drawn into a curve. The stability of the curve can reflect the stability of the air volume control accuracy of the corresponding air volume valve 5.

[0040] A first rectifying net 8.1 is also provided in the first air inlet pipe 2.1 and the second air inlet pipe 2.2. The first rectifying net 8.1 is provided near the location of the air volume valve 5. A second rectifying net 8.2 is provided in the air inlet main pipe. The second rectifying net 8.2 is provided near the location of the venturi nozzle 9 and is located above and below the venturi nozzle 9. The airflow entering the venturi nozzle 9 and the airflow coming out of the venturi nozzle 9 are rectified. The first rectifying net 8.1 and the second rectifying net 8.2 rectify the pipeline airflow of the air inlet pipe 2, which can reduce the turbulence inside the pipeline, make the air volume in the pipeline uniform and stable, and make the measured air volume more accurate. Among them, the first rectifying net 8.1 and the second rectifying net 8.2 are mesh structures composed of a plurality of slender holes, and have a certain axial length to improve the rectifying effect.

[0041] It should be noted that the connections between the air source device 4 and the main air inlet pipe 2.3 and the air outlet pipe 3 are all flexible connections. Specifically, both the main air inlet pipe 2.3 and the air outlet pipe 3 are connected to the air source device 4 by canvas flexible connections, which can reduce the impact of the vibration generated by the air source device 4 on the air inlet pipe 2 and the air outlet pipe 3.

[0042] In this solution, the air outlet pipe 3 is a transparent acrylic pipe, and a floating ball 12 is also arranged inside the air outlet pipe 3. When there is air volume discharged inside the air outlet pipe 3, the floating ball 12 will fluctuate up and down. Through the up and down fluctuation of the floating ball 12, the stability of the air volume control effect of the air volume valve 5 is visually reflected dynamically.

[0043] A third rectifying net 8.3 is also arranged inside the air outlet pipe 3. The third rectifying net 8.3 is arranged below the floating ball 12. When the air source device 4 discharges air flow into the air outlet pipe 3, it will first pass through the third rectifying net 8.3 for primary rectification to reduce the disturbance effect of the air source device 4 on the floating ball 12 and improve the accuracy and reliability of the demonstration. It should be noted that the structure of the third rectifying net 8.3 is the same as that of the first rectifying net 8.1 and the second rectifying net 8.2.

Claims

1. An air volume valve display platform, characterized in that: It comprises a display stand, on which an air inlet pipe and an air outlet pipe are arranged, a wind source device is arranged inside the display stand, one end of the wind source device is connected to the air inlet pipe, and the other end of the wind source device is connected to the air outlet pipe, and an air volume valve is arranged at the input end of the air inlet pipe; the display stand is also provided with a display device.

2. The air volume valve display platform according to claim 1, characterized in that: The air inlet pipe includes a first air inlet pipe and a second air inlet pipe, and the first air inlet pipe and the second air inlet pipe are connected to the air source device through a three-way pipe.

3. The air volume valve display platform according to claim 1 or 2, characterized in that: A shut-off valve is arranged in the air inlet pipe.

4. The air volume valve display platform according to claim 2, characterized in that: A first rectifying network is provided between the three-way pipe and the air volume valve, and a second rectifying network is provided between the three-way pipe and the air source device.

5. An air volume valve display platform according to any one of claims 1, 2 or 4, characterized in that: The connection mode between the air inlet pipe and the wind source device, and the connection mode between the air outlet pipe and the wind source device both adopt canvas soft connection.

6. An air volume valve display platform according to any one of claims 1, 2 or 4, characterized in that: A Venturi nozzle is provided on the air inlet pipe at one side close to the wind source device, and a differential pressure measuring meter is provided at the Venturi nozzle.

7. An air volume valve display platform according to any one of claims 1, 2 or 4, characterized in that: The display stand is provided with a bracket, and the display device includes a host computer arranged on the bracket.

8. The air volume valve display platform according to claim 7, characterized in that: The display device also includes an air outlet pipe arranged on the display stand, a floating ball is arranged in the air outlet pipe, and the air outlet pipe is a transparent pipe.

9. The air volume valve display platform according to claim 8, characterized in that: A third rectifying net is arranged in the air outlet pipe and at the lower side of the floating ball.

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