Air volume cover testing device

Abstract

The utility model discloses an air volume cover testing device, and relates to the technical field of air volume covers. Comprising an air volume cover, a base is installed at the bottom end of the air volume cover, handles are installed on the front face and the back face of the base, and a displayer is installed on the left side of the base; the lifting mechanism is arranged at the bottom end of the base and used for carrying out lifting operation on the air volume cover; and the stretching mechanism is arranged at the bottom end of the lifting mechanism and used for carrying out extension operation on the lifting mechanism. According to the utility model, the opening binding member is arranged to drive the supporting rods to gather together, so that the trapezoidal clamping plate and the reciprocating spring are driven to fix the air volume cover, impact generated in the moving process is relieved, the air volume cover is kept stable in a working area, and meanwhile, the connecting rod is arranged to improve the testing height of the air volume cover, so that the air volume cover is convenient to disassemble and store; and the working efficiency and the stability of the device are improved.

Description

Technical Field

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

[0002] With the increasing requirements for air quality, health and working environment, as well as the focus on energy conservation, higher requirements are placed on the performance of ventilation systems. In order to ensure that the ventilation system achieves the expected effect, it needs to be rigorously tested. As an effective method, the air volume hood test device can provide users with a platform to simulate the real operating environment. It is widely used in the fields of construction, HVAC and refrigeration to evaluate key indicators such as fan efficiency, air quality and energy saving effect.

[0003] For example, a wind volume hood test with patent publication number CN217765170U can achieve the lifting effect by setting a guide rod and a limit plate, so that the sleeve block drives the threaded rod to move without rotating when rotating, and limits the displacement distance of the threaded rod, and sets a rubber pad to buffer the contact friction between the support plate and the wind volume hood to be tested. This solves the problem that the existing wind volume hood test device needs to be lifted manually or only with an external bracket after the wind volume hood and the test pipe section are installed, which is inconvenient to use.

[0004] Although the above-mentioned equipment achieves the lifting effect by setting guide rods and limit plates, the above-mentioned device measures the air volume of the centrifugal fan. Although the centrifugal fan can simulate the air volume, it cannot fit the actual life. In the process of air outlet air volume test, some air outlets are too high, which is not convenient for the staff to test. For this reason, we propose an air volume hood testing device. Utility Model Content

[0005] The utility model aims to provide a wind volume hood testing device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an air volume hood testing device, comprising:

[0007] An air volume hood, wherein a base is installed at the bottom end of the air volume hood, handles are installed on the front and back of the base, and a display is installed on the left side of the base;

[0008] A lifting mechanism is arranged at the bottom end of the base and is used to lift the air volume hood;

[0009] An extension mechanism, arranged at the bottom end of the lifting mechanism, is used to extend the lifting mechanism;

[0010] The lifting mechanism comprises:

[0011] A sliding groove is installed around the bottom end of the base, a fixed plate is installed on one side of the top of the sliding groove, a reciprocating spring is installed at one end of the fixed plate, a trapezoidal clamping plate is installed at the other end of the reciprocating spring, a sliding block is installed at the bottom end of the trapezoidal clamping plate, the sliding block is installed on the inner side of the sliding groove, a support rod is installed at the bottom end of the sliding groove, a fixed cylinder is installed on the outer wall of the support rod, a plurality of limiting holes are arranged on the fixed cylinder, and a restraining piece is installed on the outer wall of the fixed cylinder.

[0012] Furthermore, a limiting hole is provided on the outer wall of the closing piece near the bottom end, and the diameter of the limiting hole is consistent with that of the fixing tube. The closing piece is installed on the fixing tube through an insert rod. The width of the trapezoidal clamping plate is consistent with the width of the sliding groove, and the distance between the trapezoidal clamping plate and the sliding groove is consistent with the height of the bottom end of the base.

[0013] Furthermore, the stretching mechanism comprises:

[0014] A fixing plate is installed at the bottom end of the fixing cylinder, a threaded groove is arranged on the fixing plate, a connecting rod is installed at the bottom end of the fixing plate, and a threaded column is installed at the top end of the connecting rod.

[0015] Furthermore, the threaded column at the top of the connecting rod is movably installed in the threaded groove in the working state, and a wind pressure sensor is arranged in the base. The wind volume value obtained by the wind pressure sensor will be displayed through the display. The support rod is divided into four pieces, the top end is forked and open, but the bottom end is intertwined. The support rod is made of elastic material and is fixed by a restraining piece.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The air volume hood testing device drives the support rods to gather by arranging a restraining piece, thereby driving the trapezoidal clamping plate and the reciprocating spring to fix the air volume hood and reduce the impact generated during the movement, so that the air volume hood remains stable in the working range. At the same time, the test height of the air volume hood is increased by arranging a connecting rod, which is convenient for disassembly and storage, thereby improving the working efficiency and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an isometric schematic diagram of the utility model;

[0019] Figure 2 It is an isometric top schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the lifting mechanism of the utility model;

[0021] Figure 4 It is a schematic diagram of the extension mechanism of the utility model.

[0022] In the figure: 1. extension mechanism; 2. lifting mechanism; 3. air volume hood; 101. connecting rod; 102. fixing plate; 103. threaded groove; 104. threaded column; 201. fixing plate; 202. sliding groove; 203. trapezoidal clamping plate; 204. reciprocating spring; 205. sliding block; 206. limiting hole; 207. supporting rod; 208. restraining member; 209. inserting rod; 210. fixing tube; 301. base; 302. display; 303. handle. DETAILED DESCRIPTION

[0023] 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.

[0024] During the inspection of the ventilation system, an air volume hood is required. The test device provided by the utility model is specially used for the test operation of the air volume hood. During the test operation using this device, the test device must first be checked and confirmed to ensure that all equipment is in normal condition and can be used safely. Before testing, it is necessary to check whether the test environment is safe. All personnel using the test device need to learn the operating procedures and understand how to correctly start and stop the equipment. According to the specific test requirements, a detailed test plan should be formulated. According to the test plan, all necessary equipment and materials should be prepared. During the test, appropriate safety equipment, such as masks, gloves, goggles, etc., should be worn to ensure the normal operation of the equipment.

[0025] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: an air volume hood testing device, comprising:

[0026] The air volume hood 3 has a base 301 installed at the bottom end thereof, handles 303 are installed on the front and back of the base 301, and a display 302 is installed on the left side of the base 301;

[0027] The lifting mechanism 2 is arranged at the bottom of the base 301 and is used to lift the air volume hood 3;

[0028] The extension mechanism 1 is arranged at the bottom end of the lifting mechanism 2 and is used for extending the lifting mechanism 2.

[0029] The lifting mechanism 2 comprises:

[0030] The sliding groove 202 is installed around the bottom end of the base 301, and a fixed plate 201 is installed on one side of the top of the sliding groove 202. A reciprocating spring 204 is installed at one end of the fixed plate 201, and a trapezoidal clamping plate 203 is installed at the other end of the reciprocating spring 204. A sliding block 205 is installed at the bottom of the trapezoidal clamping plate 203.

[0031] The sliding block 205 is installed on the inner side of the sliding groove 202 . A support rod 207 is installed at the bottom end of the sliding groove 202 . A fixing tube 210 is installed on the outer wall of the support rod 207 . A plurality of limiting holes 206 are provided on the fixing tube 210 . A constricting piece 208 is installed on the outer wall of the fixing tube 210 .

[0032] A limiting hole 206 is provided on the outer wall of the closing piece 208 near the bottom end, and the diameter of the limiting hole 206 is consistent with that of the fixing tube 210. The closing piece 208 is installed on the fixing tube 210 through an insert rod 209. The width of the trapezoidal clamping plate 203 is consistent with that of the sliding groove 202, and the distance between the trapezoidal clamping plate 203 and the sliding groove 202 is consistent with the height of the bottom end of the base 301.

[0033] like Figure 3 As shown, it should be noted that: when the tested air outlet is at a higher position, the air volume hood 3 is placed at the top of the sliding slot 202 by driving the handle 303. At this time, the trapezoidal clamp 203 does not constrain the base 301, and the support rod 207 is in a scattered shape. The length of the sliding slot 202 is smaller than the base 301, and the constriction piece 208 is pushed upward. During the upward movement of the constriction piece 208, the support rod 207 is driven to shrink. At this time, the bottom end of the trapezoidal clamp 203 contacts the base 301, and the constriction piece 208 is moved again, and the support rod 207 is gathered again. At this moment, the inner side of the trapezoidal clamp 203 completely contacts the base 301, and drives the reciprocating spring 204 to shrink. The constriction piece 208 is limited by the insertion rod 209, so that the constriction piece 208 can be fixed in the current position. The staff lifts the fixing tube 210 to transport the air volume hood 3 to the test air outlet.

[0034] The stretching mechanism 1 comprises:

[0035] A fixing plate 102 is mounted at the bottom of the fixing tube 210 . A threaded groove 103 is provided on the fixing plate 102 . A connecting rod 101 is mounted at the bottom of the fixing plate 102 . A threaded column 104 is mounted at the top of the connecting rod 101 .

[0036] The threaded column 104 at the top of the connecting rod 101 is installed in the threaded groove 103 in the working state. A wind pressure sensor is arranged in the base 301. The wind volume value obtained by the wind pressure sensor will be displayed through the display 302. The support rod 207 is divided into four parts, the top end is forked and open, but the bottom end is intertwined. The support rod 207 is made of elastic material and is fixed by a restraining piece 208.

[0037] like Figure 4 As shown, it should be noted that: when the air volume hood 3 cannot be transported to the working area using only the fixing tube 210, take out the connecting rod 101, the top of the connecting rod 101 is fixedly connected to the threaded column 104, the fixing plate 102 is fixedly connected to the bottom of the fixing tube 210, and the bottom end of the support rod 207 is installed on the fixing plate 102, the connecting rod 101 is twisted so that the threaded column 104 is installed on the inner side of the thread groove 103, the thread groove 103 and the threaded column 104 are threadedly connected, and the outer surface of the connecting rod 101 is made of anti-slip material, which can increase the friction between the palm of the staff and the connecting rod 101.

[0038] In summary, the air volume hood testing device drives the support rod 207 to gather by setting the restraining piece 208, thereby driving the trapezoidal clamping plate 203 and the reciprocating spring 204 to fix the air volume hood 3 and reduce the impact generated during the movement, so that the air volume hood 3 remains stable in the working range. At the same time, the test height of the air volume hood 3 is increased by setting the connecting rod 101, which is convenient for disassembly and storage, thereby improving the working efficiency and stability of the device.

[0039] 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 wind volume hood testing device, characterized in that: include: An air volume hood (3), wherein a base (301) is installed at the bottom end of the air volume hood (3), handles (303) are installed on the front and back of the base (301), and a display (302) is installed on the left side of the base (301); A lifting mechanism (2) is arranged at the bottom end of the base (301) and is used to lift the air volume hood (3); An extension mechanism (1) is arranged at the bottom end of the lifting mechanism (2) and is used to extend the lifting mechanism (2); The lifting mechanism (2) comprises: A sliding groove (202) is installed around the bottom end of the base (301), a fixed plate (201) is installed on one side of the top end of the sliding groove (202), a reciprocating spring (204) is installed on one end of the fixed plate (201), a trapezoidal clamping plate (203) is installed on the other end of the reciprocating spring (204), a sliding block (205) is installed on the bottom end of the trapezoidal clamping plate (203), the sliding block (205) is installed on the inner side of the sliding groove (202), a support rod (207) is installed on the bottom end of the sliding groove (202), a fixed cylinder (210) is installed on the outer wall of the support rod (207), a plurality of limiting holes (206) are provided on the fixed cylinder (210), and a constricting piece (208) is installed on the outer wall of the fixed cylinder (210).

2. The air volume hood testing device according to claim 1, characterized in that: A limiting hole (206) is provided on the outer wall of the closing piece (208) near the bottom end, and the diameter of the limiting hole (206) is consistent with that of the fixing tube (210). The closing piece (208) is installed on the fixing tube (210) through an insert rod (209). The width of the trapezoidal clamping plate (203) is consistent with that of the sliding groove (202). The distance between the trapezoidal clamping plate (203) and the sliding groove (202) is consistent with the height of the bottom end of the base (301).

3. The air volume hood testing device according to claim 1, characterized in that: The stretching mechanism (1) comprises: A fixing plate (102) is installed at the bottom end of the fixing tube (210), a threaded groove (103) is provided on the fixing plate (102), a connecting rod (101) is installed at the bottom end of the fixing plate (102), and a threaded column (104) is installed at the top end of the connecting rod (101).

4. The air volume hood testing device according to claim 3, characterized in that: The threaded column (104) at the top end of the connecting rod (101) is movably installed in the threaded groove (103) in the working state. A wind pressure sensor is arranged in the base (301). The wind volume value obtained by the wind pressure sensor will be displayed through the display (302). The support rod (207) is divided into four parts, the top end is forked and open, but the bottom end is intertwined. The support rod (207) is made of elastic material and is fixed by a tie piece (208).

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