Adjustable air volume cover for air volume meter

Abstract

The utility model discloses an adjustable air volume cover for an air volume meter, which relates to the technical field of adjustable air volume covers and comprises a fixed seat, a combined support frame is arranged on the upper portion of the fixed seat, cover cloth is arranged on the outer side of the combined support frame, and the combined support frame is composed of four first support rods and four second support rods. According to the air volume hood, due to the arrangement of the combined supporting frame, the air volume hood can be assembled and disassembled more conveniently, and the air volume hood can be stored and stored conveniently; second hinge seats used for fixing the second supporting rods are arranged at the two ends of the second supporting rods, first supporting rods are movably hinged to the lower ends of the second hinge seats, pin joint holes are formed in the second hinge seats at the two ends of the second supporting rods, and second locking pins used for fixing and locking the second supporting rods are arranged on the pin joint holes; and through the arrangement of pin joint holes and second locking pins, the second supporting rods can be better fixed, and therefore supporting is provided for the cover cloth.

Description

Technical Field

[0001] The utility model relates to the technical field of adjustable air volume hoods, in particular to an adjustable air volume hood for an air volume meter. Background Art

[0002] The air volume hood is a commonly used air flow measurement device, suitable for buildings, factories, laboratories and other places where air flow needs to be measured and adjusted.

[0003] The size of the air volume hood connected to the air outlet of the existing air volume meter is not adjustable, and the corresponding air volume hood needs to be customized according to the different air outlet sizes. The air outlet sizes used in the project are diverse. In order to meet the measurement requirements, air volume hoods of various specifications need to be customized; multiple air volume hoods are inconvenient to carry, and the process of replacing the air volume hoods is cumbersome, which greatly reduces the detection efficiency; therefore, the present application designs an adjustable air volume hood for the air volume meter to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides an adjustable air volume cover for an air volume meter.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable air volume hood for an air volume meter comprises a fixed seat, a combined support frame is provided on the upper part of the fixed seat, a cover cloth is provided on the outer side of the combined support frame, the combined support frame is composed of four first support rods and four second support rods, and a first hinged seat is provided on the upper part of the fixed seat for hingedly fixing the first support rod.

[0006] Preferably, both ends of the second support rod are provided with a second hinge seat for fixing the second support rod, the lower end of the second hinge seat is movably hinged with the first support rod, and the second hinge seats at both ends of the second support rod are provided with pin connection holes, and the pin connection holes are provided with second locking pins for fixing and locking the second support rod.

[0007] Preferably, the first support rod is composed of a first fixed rod and a first telescopic rod, the first fixed rod is provided with a plurality of locking pin holes at equal intervals, and the lower end of the first telescopic rod is provided with a first locking pin for matching with the locking pin hole for fixing.

[0008] Preferably, the second support rod is composed of a second fixed rod and a second telescopic rod, the second telescopic rod is sleeved in the second fixed rod, a spring is provided in the inner tube of the second fixed rod, and the spring is respectively fixed at the end of the second telescopic rod and the middle of the second fixed rod.

[0009] Preferably, a first clamping seat is provided on the lower end side wall of the first fixed rod, a second clamping seat is provided on the upper end side wall of the first telescopic rod, a clamping plate is provided on both the first clamping seat and the second clamping seat, and a threaded adjustment rod for compression adjustment is provided on the side end of the clamping plate.

[0010] Preferably, a wrapping abutment sleeve for wrapping the second supporting rod is provided at the end of the cover cloth.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: in the utility model, through the setting of the combined support frame, the air volume hood can be assembled and disassembled more conveniently, and the storage and accommodation of the air volume hood is convenient; through the setting of the pin connection hole and the second locking pin, the second support rod can be better fixed, thereby providing support for the cover cloth; through the setting of the locking pin hole and the first locking pin, the shape and size of the component support frame can be better adjusted, thereby facilitating the air volume meter to use a single air volume hood to cope with different usage scenarios; through the setting of the second telescopic rod and the spring, it can better adapt to the tightening of the cover cloth and the adjustment of the first support rod, thereby stably fixing the component support frame and the cover cloth; through the setting of the first clamping seat and the second clamping seat, the tightened cover cloth can be better fixed, and the situation where the cover cloth is loose and sliding and affects the stability of the combined support frame can be avoided; through the setting of the wrapping abutment sleeve, the second support rod can be better sleeved and protected, and it is convenient for the air volume hood to abut at the detection port to improve the accuracy of the detection, and avoid the combined support frame from not being able to abut the detection port neatly due to offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the combined support frame proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the first support rod proposed by the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the second hinged seat proposed by the utility model;

[0017] Figure 5 This is a schematic diagram of a cross-sectional three-dimensional structure of the second support rod proposed by the utility model.

[0018] Serial numbers in the figure: 1. fixed seat; 2. cover cloth; 3. first support rod; 4. wrapping abutment sleeve; 5. first hinged seat; 6. second support rod; 7. first fixed rod; 8. first telescopic rod; 9. first clamping seat; 10. second clamping seat; 11. second hinged seat; 12. second locking pin; 13. second fixed rod; 14. second telescopic rod; 15. spring. DETAILED DESCRIPTION

[0019] 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 of the embodiments.

[0020] Example: See Figure 1-5 The adjustable air volume hood for the air volume meter in the utility model comprises a fixed seat 1, a combined support frame is provided on the upper part of the fixed seat 1, a cover cloth 2 is provided on the outer side of the combined support frame, and the combined support frame is composed of four first support rods 3 and four second support rods 6. A first hinge seat 5 for hingedly fixing the first support rod 3 is provided on the upper part of the fixed seat 1. Through the arrangement of the combined support frame, the air volume hood can be assembled and disassembled more conveniently, which is convenient for the storage and storage of the air volume hood; second hinge seats 11 for fixing the second support rod 6 are provided at both ends of the second support rod 6, and the lower end of the second hinge seat 11 is movably hinged with the first support rod 3, and the second hinge seats 11 at both ends of the second support rod 6 are hinged to the first support rod 3. The receiving seat 11 is provided with a pin connection hole, and the pin connection hole is provided with a second locking pin 12 for fixing and locking the second support rod 6. Through the setting of the pin connection hole and the second locking pin 12, the second support rod 6 can be better fixed, thereby providing support for the cover cloth 2; the first support rod 3 is composed of a first fixed rod 7 and a first telescopic rod 8, and a plurality of locking pin holes are equidistantly provided on the first fixed rod 7, and the lower end of the first telescopic rod 8 is provided with a first locking pin for fixing with the locking pin hole. Through the setting of the locking pin hole and the first locking pin, the shape and size of the supporting frame can be better adjusted, so that the air volume meter can use a single air volume hood to cope with different usage scenarios.

[0021] In the present invention, the second support rod 6 is composed of a second fixed rod 13 and a second telescopic rod 14, the second telescopic rod 14 is sleeved in the second fixed rod 13, a spring 15 is provided in the inner tube of the second fixed rod 13, and the spring 15 is respectively fixed to the end of the second telescopic rod 14 and the middle of the second fixed rod 13. Through the arrangement of the second telescopic rod 14 and the spring 15, it can better adapt to the tightening of the cover cloth 2 and the adjustment of the first support rod 3, so as to stably fix the support frame and the cover cloth 2; the lower end side wall of the first fixed rod 7 is provided with a first clamping seat 9, and the upper end side wall of the first telescopic rod 8 is provided with a second clamping seat 10, The first clamping seat 9 and the second clamping seat 10 are both provided with clamping plates, and the side ends of the clamping plates are both provided with threaded adjustment rods for compression adjustment. Through the arrangement of the first clamping seat 9 and the second clamping seat 10, the cover cloth 2 can be better fixed and tightened to prevent the cover cloth 2 from loosening and sliding and affecting the stability of the combined support frame; the end of the cover cloth 2 is provided with a wrapping abutment sleeve 4 for wrapping the second support rod 6. Through the arrangement of the wrapping abutment sleeve 4, the second support rod 6 can be better sleeved and protected, and the air volume hood can be easily abutted against the detection port to improve the accuracy of the detection, thereby preventing the combined support frame from being unable to neatly abut the detection port due to offset.

[0022] Working principle: When using the utility model, first adjust the length of the first support rod 3 according to needs. The setting of the locking pin hole and the first locking pin can better adjust the shape and size of the supporting frame, so that the air volume meter can use a single air volume hood to cope with different usage scenarios. Then, the upper cover cloth 2 is clamped on the second clamping seat 10, so that the second support rod 6 can adapt to the position of the adjustment spring 15 and the second telescopic rod 14. The setting of the second telescopic rod 14 and the spring 15 can better adapt to the tightening of the cover cloth 2 and the adjustment of the first support rod 3, so as to firmly fix the supporting frame and the cover cloth 2. Then, the cover cloth 2 is clamped and fixed on the first clamping seat 9 again, so that the cover cloth 2 can fit the detection port more stably to ensure the stability of the air volume hood. The setting of the wrapping abutment sleeve 4 can better sleeve and protect the second support rod 6, and facilitate the abutment of the air volume hood at the detection port to improve the accuracy of the detection, and avoid the combination support frame from not being able to abut the detection port neatly due to offset. At this point, the use of the adjustable air volume hood is completed.

[0023] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable air volume hood for an air volume meter, comprising a fixing seat (1), characterized in that: A combined support frame is provided on the upper part of the fixing seat (1), a cover cloth (2) is provided on the outer side of the combined support frame, the combined support frame is composed of four first support rods (3) and four second support rods (6), and a first hinge seat (5) for hingedly fixing the first support rod (3) is provided on the upper part of the fixing seat (1); Both ends of the second support rod (6) are provided with a second hinge seat (11) for fixing the second support rod (6), the lower end of the second hinge seat (11) is movably hinged to the first support rod (3), and the second hinge seats (11) at both ends of the second support rod (6) are provided with pin holes, and the pin holes are provided with second locking pins (12) for fixing and locking the second support rod (6); The first support rod (3) is composed of a first fixed rod (7) and a first telescopic rod (8); a plurality of locking pin holes are equidistantly provided on the first fixed rod (7); and a first locking pin for cooperating with the locking pin hole for fixing is provided at the lower end of the first telescopic rod (8); The second support rod (6) is composed of a second fixed rod (13) and a second telescopic rod (14); the second telescopic rod (14) is sleeved in the second fixed rod (13); a spring (15) is provided in the inner tube of the second fixed rod (13); the spring (15) is respectively fixed to the end of the second telescopic rod (14) and the middle of the second fixed rod (13).

2. The adjustable air volume hood for the air volume meter according to claim 1, characterized in that: A first clamping seat (9) is provided on the lower side wall of the first fixed rod (7), and a second clamping seat (10) is provided on the upper side wall of the first telescopic rod (8). The first clamping seat (9) and the second clamping seat (10) are both provided with clamping plates, and the side ends of the clamping plates are both provided with threaded adjustment rods for clamping adjustment.

3. The adjustable air volume hood for the air volume meter according to claim 2, characterized in that: A wrapping abutment sleeve (4) for wrapping the second support rod (6) is provided at the end of the cover cloth (2).

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