Venturi tube for accelerating airflow at corner

Abstract

The utility model relates to the technical field of venturi tubes, in particular to a venturi tube for accelerating airflow at a corner, which comprises a first venturi tube, a connecting flange is arranged on the surface of the left side of the first venturi tube, a second venturi tube is arranged on the surface of the right side of the first venturi tube, and an arc-shaped pad is arranged on the inner bottom wall of the first venturi tube. A sliding groove is formed in the arc-shaped pad; and the telescopic rod is installed on the upper surface of the arc-shaped pad, the top surface of the telescopic rod is fixedly connected with a top block, the top surface of the top block is provided with a top plate, and the top plate is matched with the sliding groove. The telescopic rod can drive the top block to ascend, the top block can drive the top plate to ascend, the top plate can drive the arc-shaped block to ascend, the space where air passes continues to be narrowed, the flow speed can be increased, meanwhile, the top plate cannot be separated from the interior of the sliding groove, and therefore airflow passing through the arc-shaped block can be accelerated to a certain degree; and the overall acceleration effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of venturi tubes, in particular to a venturi tube for accelerating airflow at a corner. Background Art

[0002] The Venturi tube is a device for measuring fluid pressure difference. It is a pipe that first contracts and then gradually expands. The pressure difference between its inlet cross-section and the minimum cross-section is measured, and the flow rate can be calculated using Bernoulli's theorem.

[0003] In this regard, China's patent application number: CN213336267U discloses a venturi tube, which is a nested flow meter tube, and the flow meter tube includes an outer tube, a measuring tube arranged on the outer tube, and a nested throat tube arranged in the outer tube, and positioning tubes of the throat tube are respectively arranged on both sides of the throat tube. The nested flow meter tube has the characteristics of simple and convenient processing and manufacturing, high technician efficiency, high structural strength, high temperature and high pressure resistance, and high processing accuracy.

[0004] However, in actual use, the airflow velocity cannot be controlled at the bend of the venturi tube, so that it cannot be adjusted when the subsequent flow velocity is slow, which has limitations in use, and the throat tube in the above patent cannot be adjusted. Therefore, it has become an urgent problem to be solved for us to perfect and improve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a venturi tube for accelerating airflow at a corner, so as to solve the problem proposed in the above background technology that the airflow velocity cannot be controlled at the bend of the venturi tube, so that the subsequent flow velocity cannot be adjusted when it is slow, which has limitations during use, and the throat neck tube in the above patent cannot be adjusted.

[0006] To achieve the above object, the utility model provides the following technical solution: a venturi tube for accelerating airflow at a corner, comprising a first venturi tube, a connecting flange is arranged on the left surface of the first venturi tube, a second venturi tube is arranged on the right surface of the first venturi tube, an arc pad is arranged on the inner bottom wall of the first venturi tube, and a sliding groove is arranged inside the arc pad;

[0007] A telescopic rod is installed on the upper surface of the arc pad, a top block is fixedly connected to the top surface of the telescopic rod, a top plate is arranged on the top surface of the top block, the top plate and the sliding groove are adapted to each other, and an arc block is arranged on the top surface of the top plate.

[0008] Preferably, the arc block is mounted on the outer surface of the top plate, and the top plate is movably connected inside the sliding groove.

[0009] Preferably, a sealing ring is provided on the lower surface of the first venturi tube, and a connecting pipe is provided inside the sealing ring.

[0010] Preferably, an adjusting ring is provided inside the connecting pipe, and a rotating rod is inserted and installed on the front surface of the adjusting ring.

[0011] Preferably, the rotating rod passes through the connecting pipe and the sealing ring and is provided with a motor body, and the motor body is installed on the front surface of the sealing ring.

[0012] Preferably, the adjustment ring and the connecting pipe are adapted to each other, and the connecting pipe is installed on the inner bottom surface of the first venturi tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The venturi tube for accelerating airflow at the corner is provided with a first venturi tube, a connecting flange, a second venturi tube, an arc pad, a sliding groove, a telescopic rod, a top block, a top plate and an arc block. When in use, the gas first enters through the first venturi tube, and then the sizes of the first venturi tube and the second venturi tube become narrower when passing through the first venturi tube and the second venturi tube, so that the flow rate of the gas becomes larger. Then, when the flow rate of the gas needs to be increased again, the telescopic rod inside the arc pad is started, and the top block can be driven to rise through the telescopic rod. At this time, the top block will drive the top plate to rise, and the top plate will drive the arc block to rise. At this time, the space through which the gas passes continues to narrow, so that the flow rate will increase. At the same time, the top plate will not separate from the inside of the sliding groove, so that the airflow passing through the arc block can be accelerated to a certain extent, and the overall acceleration effect is good, which reflects the practicality of the design.

[0015] 2. The venturi tube for accelerating airflow at a corner is provided with a sealing ring, a connecting tube, an adjusting ring, a rotating rod and a motor body. When in use, the connecting tube is first installed at the lower end of the first venturi tube, and then the connection between the connecting tube and the first venturi tube can be sealed by the sealing ring. When the gas is transported to the inside of the first venturi tube and the second venturi tube through the connecting tube, the connecting tube and the first venturi tube are in a corner state. Then the motor body is started, and the rotating rod and the adjusting ring can be rotated through the motor body. At this time, the adjusting ring is in an inclined state, so that the adjusting ring can reduce the area at the corner, thereby narrowing the gas flow area, so that the flow rate will be faster when the gas is transported at the corner. The overall use effect is good, reflecting the functionality of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the disassembly of the first venturi tube and the arc pad structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the splitting of the arc pad and arc block structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the disassembly of the connecting pipe and the adjusting ring structure of the utility model.

[0020] In the figure: 1. first venturi tube; 2. connecting flange; 3. second venturi tube; 4. arc pad; 5. sliding groove; 6. telescopic rod; 7. top block; 8. top plate; 9. arc block; 10. sealing ring; 11. connecting pipe; 12. adjusting ring; 13. rotating rod; 14. motor body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , an embodiment provided by the utility model:

[0023] A venturi tube for accelerating airflow at a corner. The first venturi tube 1, the second venturi tube 3, the telescopic rod 6 and the motor body 14 used in the present application are all products that can be directly purchased on the market. The principles and connection methods thereof are all prior arts well known to those skilled in the art, so they will not be described in detail herein. The invention comprises a first venturi tube 1, a connecting flange 2 is arranged on the left surface of the first venturi tube 1, a second venturi tube 3 is arranged on the right surface of the first venturi tube 1, an arc pad 4 is arranged on the inner bottom wall of the first venturi tube 1, a sliding groove 5 is arranged inside the arc pad 4, a sealing ring 10 is arranged on the lower surface of the first venturi tube 1, a connecting pipe 11 is arranged inside the sealing ring 10, an adjusting ring 12 is arranged inside the connecting pipe 11, a rotating rod 13 is inserted and installed on the front surface of the adjusting ring 12, the rotating rod 13 passes through the connecting pipe 11 and the sealing ring 10, and the motor body is arranged inside The motor body 14 is installed on the front surface of the sealing ring 10, the adjusting ring 12 and the connecting pipe 11 are adapted to each other, and the connecting pipe 11 is installed on the inner bottom surface of the first venturi tube 1. First, the connecting pipe 11 is installed at the lower end of the first venturi tube 1, and then the connecting pipe 11 and the first venturi tube 1 can be sealed by the sealing ring 10. When the gas is transported to the first venturi tube 1 and the second venturi tube 3 through the connecting pipe 11, the connecting pipe 11 and the first venturi tube 1 are in a state of turning. Then, the motor body 14 is started, and the rotating rod 13 and the adjusting ring 12 can be rotated by the motor body 14. At this time, the adjusting ring 12 is in a tilted state, so that the adjusting ring 12 can reduce the area at the corner, thereby narrowing the gas flow area, so that the flow rate will be accelerated when the gas is transported at the corner, and the overall use effect is better;

[0024] Telescopic rod 6, telescopic rod 6 is installed on the upper surface of arc pad 4, top surface of telescopic rod 6 is fixedly connected with top block 7, top surface of top block 7 is provided with top plate 8, top plate 8 and sliding groove 5 are adapted to each other, top surface of top plate 8 is provided with arc block 9, arc block 9 is installed on the outer surface of top plate 8, and top plate 8 is movably connected inside sliding groove 5, gas enters through first venturi tube 1, and then passes through first venturi tube 1 and second venturi tube 3, the size of first venturi tube 1 and second venturi tube 3 becomes narrower, so that the flow rate of gas becomes larger, and then when the flow rate of gas needs to be increased again, by starting telescopic rod 6 inside arc pad 4, top block 7 can be driven to rise by telescopic rod 6, at this time, top block 7 will drive top plate 8 to rise, so that top plate 8 will drive arc block 9 to rise, at this time, the space through which gas passes continues to narrow, so that the flow rate will become larger, and top plate 8 will not be separated from the inside of sliding groove 5, so that the airflow passing through arc block 9 can be accelerated to a certain extent, and the overall acceleration effect is better.

[0025] Working principle: When the staff uses the device, firstly, the device is connected to an external power supply to provide power support for the device. First, the gas enters through the first venturi tube 1, and then when passing through the first venturi tube 1 and the second venturi tube 3, the size of the first venturi tube 1 and the second venturi tube 3 becomes narrower, so that the flow rate of the gas increases. Then, when the flow rate of the gas needs to be increased again, the telescopic rod 6 inside the arc pad 4 is started, and the telescopic rod 6 can drive the top block 7 to rise. At this time, the top block 7 will drive the top plate 8 to rise, and the top plate 8 will drive the arc block 9 to rise. At this time, the space through which the gas passes continues to narrow, so that the flow rate will increase. At the same time, the top plate 8 will not separate from the inside of the sliding groove 5, so that the gas passing through the arc block 9 can The flow can be accelerated to a certain extent, the connecting pipe 11 is installed at the lower end of the first venturi tube 1, and then the connection between the connecting pipe 11 and the first venturi tube 1 can be sealed by the sealing ring 10. When the gas is transported to the inside of the first venturi tube 1 and the second venturi tube 3 through the connecting pipe 11, the connecting pipe 11 and the first venturi tube 1 are in a corner state, and then the motor body 14 is started, and the rotating rod 13 and the adjusting ring 12 can be rotated by the motor body 14. At this time, the adjusting ring 12 is in an inclined state, so that the adjusting ring 12 can make the area at the corner smaller, thereby narrowing the flow area of ​​the gas, so that the flow rate will be accelerated when the gas is transported at the corner. The above is all the working principles of the utility model.

[0026] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A venturi tube for accelerating airflow at a corner, comprising a first venturi tube (1), a connecting flange (2) being arranged on the left surface of the first venturi tube (1), and a second venturi tube (3) being arranged on the right surface of the first venturi tube (1), characterized in that: The inner bottom wall of the first venturi tube (1) is provided with an arc-shaped pad (4), and a sliding groove (5) is provided inside the arc-shaped pad (4); A telescopic rod (6), the telescopic rod (6) being mounted on the upper surface of the arc-shaped pad (4), the top surface of the telescopic rod (6) being fixedly connected to a top block (7), the top surface of the top block (7) being provided with a top plate (8), the top plate (8) and the sliding groove (5) being adapted to each other, and the top surface of the top plate (8) being provided with an arc-shaped block (9).

2. A venturi tube for accelerating airflow at a corner according to claim 1, characterized in that: The arc block (9) is mounted on the outer surface of the top plate (8), and the top plate (8) is movably connected inside the sliding groove (5).

3. The venturi tube for accelerating airflow at a corner according to claim 1, characterized in that: A sealing ring (10) is provided on the lower surface of the first venturi tube (1), and a connecting pipe (11) is provided inside the sealing ring (10).

4. A venturi tube for accelerating airflow at a corner according to claim 3, characterized in that: An adjusting ring (12) is arranged inside the connecting pipe (11), and a rotating rod (13) is inserted and installed on the front surface of the adjusting ring (12).

5. The venturi tube for accelerating airflow at a corner according to claim 4, characterized in that: The rotating rod (13) passes through the connecting pipe (11) and the sealing ring (10), and a motor body (14) is arranged inside the motor body (14), and the motor body (14) is installed on the front surface of the sealing ring (10).

6. The venturi tube for accelerating airflow at a corner according to claim 4, characterized in that: The adjusting ring (12) and the connecting pipe (11) are adapted to each other, and the connecting pipe (11) is installed on the inner bottom surface of the first venturi tube (1).

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