Centrifugal fan detection device

Abstract

The utility model discloses a centrifugal fan detection device, which comprises a base, a sliding plate is slidably arranged on the base, a fixing plate is arranged on the base, a connecting plate is arranged on the base, a hinge rod is arranged at one end of the connecting plate, and a connecting rod is arranged at the other end of the connecting plate. One end of the hinge rod is hinged to the connecting plate, the other end of the hinge rod is hinged to the sliding plate, one end of the connecting rod is hinged to the fixing plate, the other end of the connecting rod is hinged to the connecting plate, and the connecting plate can be driven to move by sliding the sliding plate; an abutting plate is arranged on the connecting plate in a sliding manner; an air volume detector is arranged on the fixing plate, a wind power detection wheel is arranged on the air volume detector, wind power of the fan drives the wind power detection wheel to rotate, the air volume of the fan is detected, and through the simple structure, the device can fix the air volume detector to fan air pipes with different diameters so that the air volume of the fan can be conveniently detected.

Description

Technical Field

[0001] The utility model relates to the field of fans, and in particular to a centrifugal fan detection device. Background Art

[0002] Centrifugal fan is a common industrial equipment, mainly used for gas transportation and pressure regulation. It generates centrifugal force through the rotating impeller, sucks in gas from the inlet and accelerates it to a high speed, then converts kinetic energy into static pressure energy through the diffuser, and finally discharges the gas from the outlet. The centrifugal fan needs to be tested when in use. The detection of the centrifugal fan is an important link to ensure its efficient and safe operation, such as measuring parameters such as air volume, air pressure, and power through anemometers, pressure gauges, etc., evaluating the performance of the fan, etc. For example, a pipeline air volume detection device provided by patent number CN 207964002 U includes a shell, the wind speed detector is used to detect the wind speed in the pipeline; a laser diameter gauge, which is rotatably connected to the shell and is used to measure the diameter of the pipeline; a display screen, which is fixed on the side of the shell relative to the laser diameter gauge, and is used to display the air volume in the pipeline; a control board, which is connected to the wind speed detector, the laser diameter gauge and the display screen, the control board receives the wind speed data of the wind speed detector and the diameter data of the laser diameter gauge, and transmits the air volume data of the pipeline to the display screen, but the device is not convenient to be fixed on the inner wall of the air duct with different diameters. Utility Model Content

[0003] The utility model aims to provide a centrifugal fan detection device, which solves the problem that the device is inconvenient to be fixed on the inner wall of air ducts with different diameters.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a centrifugal fan detection device, which includes a base, a slide plate slidably provided on the base, a fixed plate provided on the base, a connecting plate provided on the base, a hinge rod provided at one end of the connecting plate, and a connecting rod provided at the other end, one end of the hinge rod is hinged to the connecting plate, and the other end is hinged to the slide plate, one end of the connecting rod is hinged to the fixed plate, and the other end is hinged to the connecting plate, sliding the slide plate can drive the connecting plate to move; a resistance plate is slidably provided on the connecting plate; an air volume detector is provided on the fixed plate, and a wind force detection wheel is provided on the air volume detector.

[0005] Preferably, a lead screw lever is rotatably provided on the base, a lead screw nut is provided on the lead screw lever, and the lead screw nut is connected to the slide plate.

[0006] Preferably, a support rod is provided on the fixing plate, a support plate is provided on the support rod, a limiting rod is provided on the support plate, and the slide plate is slidably provided on the limiting rod.

[0007] Preferably, a pawl is rotatably provided on the base, a ratchet is provided on the wire lever, and the ratchet is meshingly connected with the pawl.

[0008] Preferably, a guide rod is slidably provided on the connecting plate, and the guide rod is connected to the contact plate.

[0009] Preferably, a spring is sleeved on the guide rod, one end of the spring is connected to the abutment plate, and the other end of the spring is connected to the connection plate.

[0010] The utility model provides a centrifugal fan detection device, the centrifugal fan detection device comprises a base, a slide plate is slidably provided on the base, a fixed plate is provided on the base, a connecting plate is provided on the base, a hinge rod is provided at one end of the connecting plate, and a connecting rod is provided at the other end, one end of the hinge rod is hinged to the connecting plate, and the other end is hinged to the slide plate, one end of the connecting rod is hinged to the fixed plate, and the other end is hinged to the connecting plate, and sliding the slide plate can drive the connecting plate to move; a resistance plate is slidably provided on the connecting plate; an air volume detector is provided on the fixed plate, and a wind force detection wheel is provided on the air volume detector When using the device, it is necessary to first place the resistance plate on the inner wall of the air duct of the fan, and then rotate the wire lever on the base so that the wire lever drives the slide plate to move. During the displacement process, the slide plate drives the resistance plate to contact the inner wall of the air duct, so as to fix the air volume detector on the fixed plate in the air duct (the air volume detector here can be a component known in the art, and can be an air volume detector of model FB-2A of Juchuang Group). Then, start the fan so that the wind force of the fan drives the wind force detection wheel to rotate, thereby detecting the air volume of the fan. Through a simple structure, the device can fix the air volume detector on fan ducts of different diameters to facilitate the detection of the fan air volume.

[0011] Beneficial effect: By rotating the wire lever on the base, the wire lever drives the slide plate to move, and during the displacement process, the slide plate drives the contact plate to contact the inner wall of the air duct, so as to fix the air volume detector on the fixed plate in the air duct, so that the device can fix the air volume detector on the fan ducts of different diameters, so as to facilitate the detection of the fan air volume.

[0012] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0014] Figure 1 This is a first-view structural diagram of the detection device provided by the utility model;

[0015] Figure 2 yes Figure 1 The enlarged structural diagram at A in the middle;

[0016] Figure 3 yes Figure 1 The structure diagram at B is enlarged;

[0017] Figure 4 This is a structural diagram of the detection device provided by the utility model from a second viewing angle.

[0018] Description of Reference Numerals

[0019] 1. Base; 2. Wire lever; 3. Slide plate; 4. Connecting plate; 5. Articulated rod; 6. Resistance plate; 7. Guide rod; 8. Spring; 9. Fixed plate; 10. Support plate; 11. Ratchet; 12. Paw; 13. Limit rod; 14. Wind volume detector; 15. Wind force detection wheel. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0021] like Figure 1-4 As shown: the utility model provides a centrifugal fan detection device, the detection device includes a base 1, a slide plate 3 is slidably provided on the base 1, a fixed plate 9 is provided on the base 1, a connecting plate 4 is provided on the base 1, a hinge rod 5 is provided at one end of the connecting plate 4, and a connecting rod is provided at the other end, one end of the hinge rod 5 is hinged to the connecting plate 4, and the other end is hinged to the slide plate 3, one end of the connecting rod is hinged to the fixed plate 9, and the other end is hinged to the connecting plate 4, sliding the slide plate 3 can drive the connecting plate 4 to move; a resistance plate 6 is slidably provided on the connecting plate 4; an air volume detector 14 is provided on the fixed plate 9, and a wind force detection wheel 15 is provided on the air volume detector 14.

[0022] The working principle of the utility model is as follows: when using the device, it is necessary to first place the resistance plate on the inner wall of the air duct of the fan, and then rotate the wire lever on the base so that the wire lever drives the slide plate to move. During the displacement process, the slide plate drives the resistance plate to contact the inner wall of the air duct, so as to fix the air volume detector on the fixing plate in the air duct. Then, start the fan so that the wind force of the fan drives the wind force detection wheel to rotate, thereby detecting the air volume of the fan. Through a simple structure, the device can fix the air volume detector on fan ducts of different diameters to facilitate the detection of the fan air volume.

[0023] In a preferred embodiment of the utility model, a lead screw lever 2 is rotatably provided on the base 1, a lead screw nut is provided on the lead screw lever 2, and the lead screw nut is connected to the slide plate 3. This is to facilitate the lead screw lever to drive the slide plate to move, thereby driving the contact plate to contact the inner wall of the air duct on the fan.

[0024] In a preferred embodiment of the utility model, a support rod is provided on the fixed plate 9, a support plate 10 is provided on the support rod, a limiting rod 13 is provided on the support plate 10, and the slide plate 3 is slidably provided on the limiting rod 13. This is to facilitate the limiting of the slide plate so that it is not easy to produce position deviation during the displacement process.

[0025] In a preferred embodiment of the utility model, a pawl 12 is rotatably provided on the base 1, and a ratchet 11 is provided on the wire lever 2. The ratchet 11 is meshedly connected with the pawl 12, so as to facilitate fixing the wire lever on the base.

[0026] In a preferred embodiment of the utility model, a guide rod 7 is slidably provided on the connecting plate 4, and the guide rod 7 is connected to the contact plate 6. This is to facilitate the limiting of the contact plate so that the contact plate is not prone to position deviation when it contacts the inner wall of the air duct on the fan.

[0027] In a preferred embodiment of the present invention, a spring 8 is sleeved on the guide rod 7, one end of the spring 8 is connected to the contact plate 6, and the other end is connected to the connecting plate 4, so that the contact plate can be reset by the elastic force of the spring.

[0028] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0029] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0030] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A centrifugal fan detection device, characterized in that: The centrifugal fan detection device comprises a base (1), a slide plate (3) is slidably provided on the base (1), a fixed plate (9) is provided on the base (1), a connecting plate (4) is provided on the base (1), a hinge rod (5) is provided at one end of the connecting plate (4), and a connecting rod is provided at the other end, one end of the hinge rod (5) is hinged to the connecting plate (4), and the other end is hinged to the slide plate (3), one end of the connecting rod is hinged to the fixed plate (9), and the other end is hinged to the connecting plate (4), and the slide plate (3) is slid to drive the connecting plate (4) to move; The connecting plate (4) is slidably provided with a contact plate (6); An air volume detector (14) is arranged on the fixing plate (9), and a wind force detection wheel (15) is arranged on the air volume detector (14).

2. The centrifugal fan detection device according to claim 1, characterized in that: A lead screw lever (2) is rotatably arranged on the base (1), a lead screw nut is arranged on the lead screw lever (2), and the lead screw nut is connected to the slide plate (3).

3. The centrifugal fan detection device according to claim 2, characterized in that: A support rod is arranged on the fixing plate (9), a support plate (10) is arranged on the support rod, a limit rod (13) is arranged on the support plate (10), and the slide plate (3) is slidably arranged on the limit rod (13).

4. The centrifugal fan detection device according to claim 3, characterized in that: A ratchet pawl (12) is rotatably provided on the base (1), a ratchet wheel (11) is provided on the wire lever (2), and the ratchet wheel (11) is meshingly connected with the ratchet pawl (12).

5. The centrifugal fan detection device according to claim 4, characterized in that: A guide rod (7) is slidably provided on the connecting plate (4), and the guide rod (7) is connected to the contact plate (6).

6. The centrifugal fan detection device according to claim 5, characterized in that: A spring (8) is sleeved on the guide rod (7), one end of the spring (8) is connected to the contact plate (6), and the other end is connected to the connecting plate (4).

Images