Auxiliary device for measuring air volume of fan

Abstract

The utility model discloses an auxiliary device for measuring the air volume of a fan, and relates to the technical field of air volume measurement. Comprising a pipeline body, a pipeline fan body is arranged in the pipeline body towards the inner end, an air volume measuring assembly is arranged in the pipeline body, the air volume measuring assembly comprises a U-shaped strip plate arranged in the pipeline body towards the middle of the outer end, a straight plate is fixed to the outer end of the U-shaped strip plate, a first screw is arranged in the U-shaped strip plate, and the first screw is sleeved with a sleeve rod; one end of the loop bar is provided with an air volume measurer. Through the arrangement of the air volume measuring assembly and the fixed supporting structure, the air volume measuring instrument is moved according to the length of a pipeline and the position of a pipeline fan body, so that the air volume measuring instrument is close to and far away from the pipeline fan body, a supporting motor is started, and a plurality of side U-shaped rods extend outwards along a second screw rod; the inner wall of the pipeline body is extruded and contacted, a certain supporting and stabilizing effect on the air volume measuring instrument is achieved, and the measuring accuracy is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air volume measurement, in particular to an auxiliary device for measuring the air volume of a fan. Background Art

[0002] An air volume meter is a special instrument used to measure air flow. It usually calculates the air volume by measuring the wind speed in the air flow to evaluate the performance and efficiency of the fan, ventilation system or air conditioning system. Air volume measurement is required during the use of the duct fan body.

[0003] An existing auxiliary device for measuring the air volume of a fan (authorization announcement number: CN218156888U) has the following defects: the above-mentioned auxiliary device is convenient for equidistant multi-point measurement or variable-distance multi-point measurement of the air volume of the fan, but when it is necessary to measure the air volume of the duct fan body inside the duct body, it is necessary to extend into the duct body, and the air volume detector extended into the duct body needs to be stably supported to ensure the accuracy of the measurement. For this reason, the present utility model is proposed. Utility Model Content

[0004] The utility model aims to provide a fan air volume measurement auxiliary device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan air volume measurement auxiliary device, including a pipeline body, a pipeline fan body is arranged at the inner end of the pipeline body, an air volume measurement component is arranged inside the pipeline body, the air volume measurement component includes a U-shaped strip plate arranged in the middle of the inner end of the pipeline body, a straight plate is fixed to the outer end of the U-shaped strip plate, a first screw rod is arranged in the U-shaped strip plate, a sleeve rod is sleeved on the first screw rod, an air volume measuring instrument is installed at one end of the sleeve rod, a fixed supporting structure is arranged on the sleeve rod and the U-shaped strip plate, the fixed supporting structure includes an arched fixing plate fixed to the top of both ends of the U-shaped strip plate and the top of the outer end of the sleeve rod, an arched connecting strip plate is fixed to the top surface of the arched fixing plate, vertical plates are fixed at both ends of the arched connecting strip plate, a second screw rod is arranged in the arched connecting strip plate, and the second screw rod is rotatably inserted on the vertical plate.

[0006] Preferably, a limiting sliding plate is symmetrically sleeved on the second screw rod, and the limiting sliding plate is slidably arranged in the arched connecting strip plate. The outer side of the limiting sliding plate is fixed with a cross bar, and the outer end of the cross bar is fixed with a side U-shaped rod, which is used for extruding and contacting the inner wall of the pipeline body.

[0007] Preferably, the limiting sliding plate begins to have a thread groove that is adapted to the external thread of the second screw and has the same and opposite directions. A support motor is connected to one end of the second screw located at one end of the U-shaped strip and at the outer end of the sleeve rod, and the support motor is installed on the vertical plate.

[0008] Preferably, pulleys are fixedly mounted on the middle parts of the second screw rods at both ends of the U-shaped strip, and belts are connected to the pulleys. The belts are used to drive the two second screw rods to rotate synchronously.

[0009] Preferably, the air volume measurement assembly further comprises limit rods symmetrically fixed on both sides of one end of the sleeve rod, the U-shaped strip is provided with limit strip holes adapted to slide with the limit rods, and a fixing ring is sleeved and fixed at the outer end of the sleeve rod.

[0010] Preferably, the first screw is rotatably inserted on the straight plate, one end of the first screw is connected to a rotating motor, an installation box is provided on the outside of the straight plate, the rotating motor is installed in the installation box, a handle is fixed on the outer side of the installation box, and a thread groove adapted to the external thread of the first screw is opened in the sleeve rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The fan air volume measurement auxiliary device moves the air volume measuring instrument according to the length of the pipeline and the position of the pipeline fan body through the arrangement of the air volume measuring component and the fixed support structure, so that the air volume measuring instrument is close to and away from the pipeline fan body. The support motor is started, so that a plurality of side U-shaped rods extend outward along the second screw rod until they are squeezed and contact the inner wall of the pipeline body, thereby playing a certain supporting and stabilizing role for the air volume measuring instrument and ensuring the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the first three-dimensional structure of the utility model;

[0014] Figure 2 It is a second three-dimensional structural schematic diagram of the utility model;

[0015] Figure 3 It is a cross-sectional view of the utility model;

[0016] Figure 4 It is a three-dimensional split structure schematic diagram of a partial structure of the utility model.

[0017] In the figure: 1. duct body; 101. duct fan body; 2. U-shaped strip; 201. first screw; 202. sleeve rod; 203. air volume measuring instrument; 204. limit strip hole; 205. limit rod; 206. installation box; 207. handle; 3. arched fixing plate; 301. arched connecting strip; 302. vertical plate; 303. second screw; 304. limit sliding plate; 305. cross bar; 306. side U-shaped rod; 307. belt. DETAILED DESCRIPTION

[0018] 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.

[0019] In the process of measuring the air volume of the duct fan body 101, it is necessary to extend the air volume measuring instrument 203 into the duct body 1 and fix its position, and an auxiliary device is used. The auxiliary device provided by the utility model is specifically used to adjust and stabilize the position of the air volume measuring instrument 203 to ensure measurement accuracy. In the process of using this device, it is necessary to carry out inspection and other preparatory work in advance to ensure the normal use of this device.

[0020] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a fan air volume measurement auxiliary device, comprising a pipeline body 1, a pipeline fan body 101 is arranged at the inner end of the pipeline body 1, an air volume measurement component is arranged inside the pipeline body 1, and the air volume measurement component includes a U-shaped strip plate 2 arranged at the middle of the inner end of the pipeline body 1, a straight plate is fixed at the outer end of the U-shaped strip plate 2, a first screw rod 201 is arranged in the U-shaped strip plate 2, a sleeve rod 202 is sleeved on the first screw 201, and an air volume measuring instrument 203 is installed at one end of the sleeve rod 202, A fixed support structure is arranged on the sleeve rod 202 and the U-shaped strip 2, and the fixed support structure includes an arched fixing plate 3 fixed to the top of both ends of the U-shaped strip 2 and the top of the outer end of the sleeve rod 202, an arched connecting strip 301 is fixed to the top surface of the arched fixing plate 3, and vertical plates 302 are fixed to both ends of the arched connecting strip 301, and a second screw 303 is arranged in the arched connecting strip 301, and the second screw 303 is rotatably inserted on the vertical plate 302, wherein the pipeline body 1, the pipeline fan body 101 and the air volume measuring instrument 203 are prior art.

[0021] In the embodiment, a limiting sliding plate 304 is symmetrically sleeved on the second screw 303, and the limiting sliding plate 304 is slidably set in the arched connecting strip 301. The outer side of the limiting sliding plate 304 is fixed with a cross bar 305, and the outer end of the cross bar 305 is fixed with a side U-shaped rod 306, and the side U-shaped rod 306 is used to squeeze and contact the inner wall of the pipeline body 1. The limiting sliding plate 304 begins to have a thread groove that is adapted to the external thread of the second screw 303 and has the same and opposite directions. The U-shaped strip 2 is located at one end and the outer end of the sleeve rod 202 is located at the U-shaped strip 2. One end of the second screw rod 303 is connected to a supporting motor, which is mounted on the vertical plate 302. A pulley is fixedly mounted in the middle of the second screw rods 303 located at both ends of the U-shaped strip 2. A belt 307 is connected to the pulley. The belt 307 is used to drive the two second screw rods 303 to rotate synchronously. The pulley and the belt 307 are prior arts. When the second screw rod 303 rotates, the two limiting sliding plates 304 mounted on the second screw rod 303 will be driven to move closer to or away from each other. The outer end of the side U-shaped rod 306 is set as a rubber head.

[0022] In the embodiment, the air volume measurement component also includes a limit rod 205 symmetrically fixed on both sides of one end of the sleeve rod 202, a limit rod hole 204 adapted to slide with the limit rod 205 is opened on the U-shaped strip plate 2, a fixing ring is fixedly set at the outer end of the sleeve rod 202, the first screw rod 201 is rotatably inserted on the straight plate, one end of the first screw rod 201 is connected to a rotating motor, an installation box 206 is arranged on the outer side of the straight plate, the rotating motor is installed in the installation box 206, a handle 207 is fixed on the outer side of the installation box 206, a thread groove adapted to the external thread of the first screw rod 201 is opened in the sleeve rod 202, and the air volume measurement component is used to measure the air volume. And the fixed support structure is set, the air volume measuring instrument 203 is moved according to the pipeline length and the position of the pipeline fan body 101, so that the air volume measuring instrument 203 is close to and away from the pipeline fan body 101, and the support motor is started, so that multiple side U-shaped rods 306 extend outward along the second screw rod 303 until they are squeezed and contact the inner wall of the pipeline body 1, which plays a certain supporting and stabilizing role for the air volume measuring instrument 203 and ensures the measurement accuracy. Among them, the limit rod 205 and the limit bar hole 204 play a limiting role, and the rotating motor and the support motor adopt a servo motor with a self-locking function in the prior art.

[0023] Working principle: When using this device, grasp the handle 207 to put the U-shaped strip 2 and the sleeve rod 202 as a whole into the pipe body 1, control the rotating motor and the supporting motor to start, so that the sleeve rod 202 and the air volume measuring instrument 203 as a whole move in the U-shaped strip 2 under the rotation of the first screw 201 and the limiting action of the limiting strip hole 204, and stop at a suitable measuring position close to the pipe fan body 101. Then, the second screw 303 rotates, so that the limiting sliding plate 304, the cross bar 305 and the side U-shaped rod 306 move outward as a whole along the direction of the second screw 303 until they are squeezed and contact the inner wall of the pipe body 1, completing the support and fixing operation, and then the measurement operation can be carried out.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A fan air volume measurement auxiliary device, comprising a pipeline body (1), characterized in that: A duct fan body (101) is arranged at the inner end of the duct body (1), and an air volume measuring assembly is arranged at the inner end of the duct body (1). The air volume measuring assembly comprises a U-shaped strip (2) arranged at the middle of the inner end of the duct body (1), a straight plate is fixed at the outer end of the U-shaped strip (2), a first screw rod (201) is arranged in the U-shaped strip (2), a sleeve rod (202) is sleeved on the first screw rod (201), an air volume measuring instrument (203) is installed at one end of the sleeve rod (202), and the sleeve rod (202) is provided with a first screw rod (201). A fixed support structure is arranged on the U-shaped strip (2), the fixed support structure comprising an arched fixed plate (3) fixed to the top of both ends of the U-shaped strip (2) and the top of the outer end of the sleeve rod (202), an arched connecting strip (301) is fixed to the top surface of the arched fixed plate (3), vertical plates (302) are fixed to both ends of the arched connecting strip (301), a second screw rod (303) is arranged inside the arched connecting strip (301), and the second screw rod (303) is rotatably inserted on the vertical plate (302).

2. A fan air volume measurement auxiliary device according to claim 1, characterized in that: A limiting sliding plate (304) is symmetrically sleeved on the second screw rod (303), and the limiting sliding plate (304) is slidably arranged in the arched connecting strip plate (301). A cross bar (305) is fixed to the outer side surface of the limiting sliding plate (304), and a side U-shaped rod (306) is fixed to the outer end of the cross bar (305). The side U-shaped rod (306) is used to press and contact the inner wall of the pipeline body (1).

3. A fan air volume measurement auxiliary device according to claim 2, characterized in that: The limiting sliding plate (304) has a thread groove that matches the external thread of the second screw rod (303) and has the same and opposite directions. One end of the second screw rod (303) located at one end of the U-shaped strip (2) and at the outer end of the sleeve rod (202) is connected to a support motor, and the support motor is installed on the vertical plate (302).

4. A fan air volume measurement auxiliary device according to claim 3, characterized in that: The middle parts of the second screw rods (303) located at both ends of the U-shaped strip (2) are sleeved and fixed with pulleys, and the pulleys are connected with belts (307). The belts (307) are used to drive the two second screw rods (303) to rotate synchronously.

5. The fan air volume measurement auxiliary device according to claim 1, characterized in that: The air volume measurement assembly also includes limit rods (205) symmetrically fixed on both sides of one end of the sleeve rod (202), a limit rod hole (204) adapted to slide with the limit rod (205) is opened on the U-shaped strip plate (2), and a fixing ring is sleeved and fixed at the outer end of the sleeve rod (202).

6. A fan air volume measurement auxiliary device according to claim 5, characterized in that: The first screw rod (201) is rotatably inserted on the straight plate, one end of the first screw rod (201) is connected to a rotating motor, an installation box (206) is arranged on the outside of the straight plate, the rotating motor is installed in the installation box (206), a handle (207) is fixed on the outer side of the installation box (206), and a thread groove adapted to the external thread of the first screw rod (201) is opened in the sleeve rod (202).

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