Door frame type fan valve

Abstract

The utility model relates to a door frame type fan valve which comprises a valve body, blades and blade shafts, a plurality of blade shafts are connected with the blades in a one-to-one correspondence mode, the blades are arranged in the valve body side by side at intervals, a plurality of silencing shuttles are installed on the surfaces of the blades side by side at intervals in the width direction of the blades, and the silencing shuttles are hollow. The surface of the valve body is provided with micropores, the inner side wall of the valve body is provided with a mounting seat, the end part of the blade shaft is movably inserted into the mounting seat, the end part of the blade shaft is also sleeved with a spring, and the rear end of the spring is propped against the inner bottom of the mounting seat. Noise generated by airflow passing through the blades is absorbed through the noise reduction shuttles arranged on the blades, noise reduction is carried out, the springs are arranged at the two ends of the blade shaft and used for buffering and energy absorption on the blades in the axial direction, the blades are prevented from axially moving due to the influence of the airflow, and stability and reliability are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fan ventilation valves, in particular to a door frame type fan valve. Background Art

[0002] The fan regulating valve is an indispensable central air conditioning terminal accessory in the ventilation, air conditioning and air purification projects of industrial plants and civil buildings. It is generally used in air conditioning and ventilation system pipes to adjust the air volume of the pipes. It can also be used for the mixing and adjustment of fresh air and return air. The shape of the existing regulating valve is designed according to the cross-section of the pipe, mostly in a square or circular door frame type. The regulating valve controls the flow of gas passing through by rotating the angle of the blade. The blade is in the shape of a sheet. When the flow rate is too high when passing through the valve in the pipe, it is easy to produce rumbling noise. The existing valve has no noise reduction design. Secondly, when the existing valve circulates high-speed airflow, because the blade is movably assembled in the door frame, it is affected by the airflow, and the blade will move in the axial direction. The structural stability is poor, the blade shaft is seriously worn, and it is easy to reduce the service life of the blade. Utility Model Content

[0003] Based on this, it is necessary to provide a door frame type fan valve to address the above problems.

[0004] A door frame type fan valve comprises a valve body, blades and blade shafts, a plurality of blade shafts are connected to a plurality of blades in a one-to-one correspondence, a plurality of blades are arranged side by side and spaced apart in the valve body, a plurality of silencer shuttles are installed on the blade surfaces of the blades in a side by side and spaced apart along the width direction of the blades, the silencer shuttles are hollow and have micropores on the surface, a mounting seat is provided on the inner side wall of the valve body, an end of the blade shaft is movably inserted in the mounting seat, a spring is also sleeved on the end of the blade shaft, and a rear end of the spring abuts against an inner bottom of the mounting seat.

[0005] Preferably, a copper sleeve is installed at the end of the blade shaft, and the blade shaft is movably inserted in the mounting seat through the copper sleeve, and the front end of the spring abuts against the end of the copper sleeve.

[0006] Preferably, a spiral pressing sheet is detachably mounted on the outer side of the mounting seat, and the spiral pressing sheet abuts against the outer edge of the copper sleeve.

[0007] Preferably, the silencer shuttles on two adjacent blades are staggered.

[0008] Preferably, the blades are made of galvanized steel plates.

[0009] The utility model is beneficial in that a silencer shuttle arranged on the blade is used to absorb the noise generated by the airflow passing through the blade to reduce noise, and springs are arranged at both ends of the blade shaft to buffer and absorb energy of the blade in the axial direction to prevent the blade from axial movement due to the influence of the airflow, thereby enhancing stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of a door frame type fan valve according to one embodiment;

[0011] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA axis. DETAILED DESCRIPTION

[0012] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0013] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0015] like Figures 1-2As shown, a door frame type fan valve includes a valve body 1, blades 2 and blade shafts 3, a plurality of blade shafts 3 are connected to a plurality of blades 2 in a one-to-one correspondence, a plurality of blades 2 are arranged side by side in the valve body 1, a plurality of silencer shuttles 4 are arranged side by side in the width direction of the blade surface of the blade 2, the silencer shuttles 4 are hollow, and have micropores 41 on the surface, the inner side wall mounting seat 11 of the valve body 1, the end of the blade shaft 3 is movably inserted in the mounting seat 11, and the end of the blade shaft 3 is also sleeved with a spring 31, and the rear end of the spring 31 is in contact with the inner bottom of the mounting seat 11. Specifically, in this embodiment, the valve body 1 is assembled into a square frame by splicing steel plates, and in other embodiments, it can also be designed to match according to the shape of the pipeline. Several blades 2 are installed side by side and at intervals in the valve body 1. The blade shaft 3 is connected to the blade 2 by a connector or welding. The blade shaft 3 is movably connected to the edge of the valve body 1. By rotating the blade shaft 3, the blade 2 can be driven to rotate, and the gap between the blades 2 can be changed, thereby achieving the function of regulating the air flow channel area inside the valve body 1. It can be understood that the blade shaft 3 is cylindrical, and springs 31 are sleeved at both ends of the blade shaft 3. Since the two ends of the blade shaft 3 are movably inserted in the mounting seat 11, and one end of the spring 31 is connected to the bottom of the mounting seat 11, and the other end is abutted against the stop structure at the end of the blade shaft 3, the spring 31 can achieve a buffering effect on the axial direction of the blade shaft 3, preventing the blade 2 from shaking and making abnormal noises due to the air pressure of the airflow, thereby improving the reliability of the blade 2, and the spring 31 is sealed in the mounting seat 11 to prevent leakage. Furthermore, in order to achieve the silencing and noise reduction of the valve body to the passing airflow, we install a silencing shuttle 4 on the surface of the blade 2. Several silencing shuttles 4 are arranged side by side and spaced along the width direction of the blade 2, which can match the blade 2 to silence the forward and reverse airflow. The silencing shuttle 4 is hollow, with built-in silencing cotton, and has micropores 41 on the surface. The noise sound waves generated by the airflow enter the inner wall through the micropores 41, and the sound waves can be absorbed by the silencing cotton, thereby completing the silencing and noise reduction effect, avoiding the rumbling noise generated when the pipeline circulates high-speed airflow, and providing a better user experience. As an optional embodiment, the blade 2 is made of galvanized steel plate, which is low in cost, not easy to rust, and has a long service life.

[0016] like Figure 2 As shown, a copper sleeve 32 is installed at the end of the blade shaft 3, and the blade shaft 3 is movably inserted in the mounting seat 11 through the copper sleeve 32, and the front end of the spring 31 abuts against the end of the copper sleeve 32. Specifically, the copper sleeve 32 is made of a relatively soft material and is detachable. The copper sleeve 32 is abutted against the end of the mounting seat 11 to prevent the blade shaft 3 from directly inserting the mounting seat 11 and to prevent the end of the blade shaft 3 from being seriously worn, resulting in the need to replace the blade shaft 3 as a whole when replacing it, which has high maintenance costs. The spring 31 abuts against the copper sleeve 32, and at the same time provides an axial buffer for the blade shaft 3 to prevent the blade shaft 3 from axial movement.

[0017] like Figure 2As shown, a spiral pressing sheet 12 is detachably installed on the outer side of the mounting seat 11 , and is specifically installed on the outer side of the mounting seat 11 by a spiral connection. The spiral pressing sheet 12 abuts against the outer edge of the copper sleeve 32 to prevent the copper sleeve 32 from falling out of the mounting seat 11 .

[0018] like Figure 1 As shown, the silencer shuttles 4 on two adjacent blades 2 are staggered, and the airflow passing through the blades 2 is divided into a laminar state. The staggered silencer shuttles 4 can better contact with the laminar airflow to perform silencer.

[0019] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A door frame type fan valve, characterized in that: It includes a valve body, blades and blade shafts, a plurality of blade shafts are connected to a plurality of blades in a one-to-one correspondence, a plurality of blades are arranged side by side in the valve body, a plurality of silencer shuttles are installed on the blade surfaces of the blades in a side by side interval along the width direction, the silencer shuttles are hollow and have micropores on the surface, a mounting seat is provided on the inner side wall of the valve body, the end of the blade shaft is movably inserted in the mounting seat, a spring is also sleeved on the end of the blade shaft, and the rear end of the spring abuts against the inner bottom of the mounting seat.

2. A door frame type fan valve as claimed in claim 1, characterized in that: A copper sleeve is installed at the end of the blade shaft, and the blade shaft is movably inserted in the mounting seat through the copper sleeve, and the front end of the spring abuts against the end of the copper sleeve.

3. A door frame type fan valve as claimed in claim 2, characterized in that: A spiral pressing sheet is detachably mounted on the outer side of the mounting seat, and the spiral pressing sheet abuts against the outer edge of the copper sleeve.

4. A door frame type fan valve as claimed in claim 1, characterized in that: The silencer shuttles on two adjacent blades are staggered.

5. A door frame type fan valve as claimed in claim 1, characterized in that: The blades are made of galvanized steel plates.

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