Constant air volume valve suitable for multiple working conditions

Abstract

The utility model discloses a constant air volume valve adapting to multiple working conditions, which relates to the technical field of valves, and comprises a valve body, a valve core, a valve core and a valve core, the filter unit is arranged at the air outlet of the valve body and comprises C-shaped guide rails arranged below the inner walls of the two sides of the valve body, hinge rods arranged in the C-shaped guide rails, I-shaped blocks arranged on the C-shaped guide rails, a turnover frame arranged between the hinge rods, a filter screen arranged in the turnover frame and a locking assembly arranged on the surface of the upper end of the filter screen. The utility model has the beneficial effects that the filter screen can be completely disassembled and assembled efficiently and quickly, the opening and closing of the filter screen are time-saving and labor-saving, the use requirements of the filter screen under different environments and different working conditions are met, and the firmness of the filter screen under screw installation and the convenience in disassembly and assembly of a magnetic suction type filter screen are also considered.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a constant air volume valve adaptable to multiple working conditions. Background Technology

[0002] A constant air volume valve is an automatic regulating device used in ventilation and air conditioning systems to maintain a constant air volume. It automatically adjusts the damper opening through a mechanical structure to adapt to changes in system resistance without the need for external power, ensuring that critical areas receive the air volume required by the design, thereby improving system efficiency and comfort.

[0003] As a crucial protective component for filtering dust and impurities, the constant air volume valve filter faces varying operational requirements under different conditions. In indoor environments with high levels of dust, the filter needs to be completely removed to prevent clogging or for cleaning; conversely, in low-temperature environments causing frost, temporarily opening the filter is sufficient. However, the traditional screw-fixed installation method is cumbersome and labor-intensive when frequently disassembling and reassembling, making it difficult to meet the differentiated maintenance needs under these two conditions. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, this utility model is proposed.

[0005] The purpose of this utility model is to provide a constant air volume valve that can adapt to multiple working conditions, in order to solve the problem that the temporary removal and installation of the filter screen of the traditional valve port will increase the workload of personnel and is not efficient.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a constant air volume valve adaptable to multiple working conditions, which includes a valve body and a locking hole through which the valve body is disposed on both sides of the valve body.

[0007] The filter unit, located at the air outlet of the valve body, includes a C-shaped guide rail located on the lower part of the inner wall on both sides of the valve body, a hinge rod located inside the C-shaped guide rail, an I-shaped block located on the C-shaped guide rail, a flip frame located between the hinge rods, a filter screen located inside the flip frame, and a locking component located on the upper surface of the filter screen.

[0008] As a preferred embodiment of the constant air volume valve adaptable to multiple working conditions of this utility model, the C-shaped guide rail includes a rod groove disposed on its upper surface, a blocking wall disposed at the end opening of the C-shaped guide rail, and a movable groove disposed on one side of the rod groove.

[0009] As a preferred embodiment of the constant air volume valve of this utility model that adapts to multiple working conditions, wherein: the two ends of the hinge rod are respectively hinged to the side wall of the tilting frame and the inner wall of the end of the C-shaped guide rail;

[0010] The side wall of the I-beam is hinged to the bottom of the side wall of the flipping frame.

[0011] As a preferred embodiment of the constant air volume valve adaptable to multiple working conditions of this utility model, the tilting frame includes shielding strips on both sides, limiting strips on the two inner walls of the tilting frame, and mounting holes through the top two sides of the tilting frame; the tilting frame is U-shaped in general.

[0012] As a preferred embodiment of the constant air volume valve adaptable to multiple working conditions of this utility model, the filter screen includes a frame surrounding it, limiting grooves on both sides of the frame, a locking groove on the upper end of the frame, and pin holes penetrating the two side walls of the locking groove.

[0013] As a preferred embodiment of the constant air volume valve adaptable to multiple working conditions of this utility model, the locking assembly includes a movable pin and a spring disposed on one side of the movable pin.

[0014] As a preferred embodiment of the constant air volume valve adaptable to multiple working conditions of this utility model, the movable pin includes a slider and pins disposed on both sides of the slider.

[0015] The beneficial effects of this utility model of a constant air volume valve adaptable to multiple working conditions are: it can take into account the high efficiency and speed of complete disassembly and assembly of the filter screen, and the time and effort saving when opening and closing the filter screen. It is suitable for the filter screen use needs under different environments and working conditions, and also takes into account the firmness of the filter screen installed with screws and the convenient disassembly and assembly of the magnetic filter screen. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall three-dimensional view of the present invention.

[0018] Figure 2 This is a partial exploded view of the present invention.

[0019] Figure 3 In this utility model Figure 1 AA full sectional view.

[0020] Figure 4 This is a structural view of the filter unit in this utility model. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0024] Example 1

[0025] Reference Figures 1-4 This is the first embodiment of the present utility model. This embodiment provides a constant air volume valve that is adaptable to multiple working conditions, including a valve body 1, including locking holes 11 that are disposed through both sides of the valve body.

[0026] The filter unit 2 is located at the air outlet of the valve body 1 and includes a C-shaped guide rail 21 located on the lower part of the inner wall on both sides of the valve body 1, a hinge rod 22 located inside the C-shaped guide rail 21, an I-shaped block 23 located on the C-shaped guide rail 21, a flip frame 24 located between the hinge rods 22, a filter screen 25 located inside the flip frame 24, and a locking assembly 26 located on the upper surface of the filter screen 25.

[0027] Furthermore, the C-shaped guide rail 21 includes a rod groove 211 disposed on its upper surface, a blocking wall 212 disposed at the end opening of the C-shaped guide rail 21, and a movable groove 213 disposed on one side of the rod groove 211.

[0028] Furthermore, the two ends of the hinge rod 22 are respectively hinged to the side wall of the tilting frame 24 and the inner wall of the end of the C-shaped guide rail 21;

[0029] The side wall of I-block 23 is hinged to the bottom of the side wall of the flipping frame 24.

[0030] Furthermore, the flipping frame 24 includes shielding strips 241 on both sides, limiting strips 242 on the two inner walls of the flipping frame 24, and mounting holes 243 through the top two sides of the flipping frame 24; the flipping frame 24 is U-shaped in general.

[0031] Furthermore, the filter screen 25 includes a frame 251 disposed around it, limiting grooves 252 disposed on both sides of the frame 251, a locking groove 253 disposed on the upper end of the frame 251, and a pin hole 254 through the two side walls of the locking groove 253.

[0032] Furthermore, the locking assembly 26 includes a movable pin 261 and a spring 262 disposed on one side of the movable pin 261.

[0033] Furthermore, the movable pin 261 includes a slider 2611 and pins 2612 disposed on both sides of the slider 2611.

[0034] It should be noted that constant air volume valves are existing technology, and those skilled in the art should understand the structural principle and usage of constant air volume valves. This embodiment is an improvement based on constant air volume, therefore, the structural principle and usage of constant air volume valves themselves will not be elaborated in detail.

[0035] Preferably, in the application of constant air volume valve, valve body 1 is generally cylindrical or square. In this embodiment, square cylindrical is used. In the direction of the air outlet of valve body 1, two symmetrically distributed locking holes 11 are opened on the side wall of valve body 1.

[0036] Two symmetrically distributed C-shaped guide rails 21 are fixed at the corners of the inner walls on both sides of the valve body 1. The side wall of the C-shaped guide rail 21 that is in an open state is the open side, and the side facing away from the open side is the closed side. The closed side of the C-shaped guide rail 21 can be fixed to the inner cavity of the valve body 1 by means of screws, rivets or welding.

[0037] Preferably, the upper and lower protrusions on the open side of the C-shaped guide rail 21 can cooperate with the upper and lower grooves of the I-shaped block 23, allowing the I-shaped block 23 to move axially along the C-shaped guide rail 21 on the open side. At the end of the C-shaped guide rail 21 facing the air outlet, a hinge rod 22 is hinged to it. The hinge rod 22 is located between the open side and the closed side, with the hinge point on the closed side. This requires the hinge rod 22 to penetrate through the upper wall of the C-shaped guide rail 21 and be able to swing around this hinge point. To prevent the movement of the hinge rod 22 from being interfered with by the upper wall of the C-shaped guide rail 21 during swinging, a rod groove 211, slightly longer than the hinge rod 22, is provided on the upper wall of the C-shaped guide rail 21. This allows the hinge rod 22 to swing normally and move into the interior of the C-shaped guide rail 21, where it is completely contained.

[0038] Preferably, since the other end of the hinge rod 22 also needs to be hinged to the flipping frame 24, during the process of the hinge rod 22 moving into the C-shaped guide rail 21, it will be limited by the hinge post and the upper and side walls of the C-shaped guide rail 21. Therefore, a movable groove 213 is provided on the side wall of the rod groove 211 facing away from the air outlet, that is, on the side wall of the rod groove 211, which extends to the opening of the C-shaped guide rail 21. The movable groove 213 is relatively short, which can prevent the I-shaped block 23 from detaching from the movable groove 213 when it moves axially.

[0039] Preferably, the tilting frame 24 is U-shaped, and its two side walls are hinged by corresponding hinge rods 22 and I-beam blocks 23. Specifically, the hinge rods 22 are hinged to the waist positions on both sides of the tilting frame 24, and the I-beam blocks 23 are hinged to the bottom positions on both sides of the tilting frame 24.

[0040] Symmetrically distributed shielding strips 241 are fixed to the edges of both sides of the flip frame 24. These shielding strips 241 are made of flexible organic materials, such as rubber or plastic, and are used to compensate for the sealing of the edge space of the flip frame 24. Furthermore, symmetrically distributed limiting strips 242 are fixed to both sides of the inner wall of the flip frame 24. These limiting strips 242 can cooperate with the limiting grooves 252 on both sides of the filter screen 25, allowing the filter screen 25 to be inserted into or removed from the U-shaped opening of the flip frame 24. Through mounting holes 243 are provided at the upper positions on both sides of the flip frame 24.

[0041] Preferably, the filter screen 25 is surrounded by a frame 251, and two fully penetrating and symmetrically distributed limiting grooves 252 are provided on both sides of the frame 251, so the filter screen 25 can move axially along the limiting grooves 252 on the flipping frame 24. A semi-open limiting groove 252 is provided at the upper end of the frame 251 to compensate for a certain degree of sealing. The limiting groove 252 is rectangular, and fully penetrating pin holes 254 are provided on both sides of the limiting groove 252.

[0042] Preferably, the movable pin 261 is composed of a slider 2611 and a pin 2612, specifically, it is also rectangular, so the slider 2611 can fit the groove shape of the locking groove 253. The length of the slider 2611 is shorter than that of the locking groove 253, so the slider 2611 can move axially inside the locking groove 253. Two pin holes 254 are also fixed on both sides of the slider 2611, which are inserted into the corresponding pin holes 254. It should be noted that the pins 2612 here are of unequal length.

[0043] A spring 262 is fitted onto the shaft of the shorter pin 2612, causing the movable pin 261 to engage with one end of the locking groove 253. The pin 2612 here will not extend out of the pin hole 254 when the movable pin 261 moves axially. The longer pin 2612, however, retracts into the pin hole 254 only when it moves against the pressure of the spring 262. Therefore, when the longer pin 2612 is inserted into the mounting hole 243, it can fix the filter screen 25 to the flipping frame 24. When simultaneously inserted into both the mounting hole 243 and the locking hole 11, it can fix the filter unit 2 within the valve body 1 while ensuring the filter screen 25 is fixed to the flipping frame 24.

[0044] When only the air outlet needs to be opened, the operator moves the movable pin 261 to the side that overcomes the pressure of the spring 262, causing the longer side of the pin 2612 to disengage from the locking hole 11. Then, the filter screen 25 is pulled up and down, and the I-shaped block 23 moves along the C-shaped guide rail 21 away from the air outlet. At this time, the hinge rod 22 swings down into the C-shaped guide rail 21, so that the filter screen 25 is laid flat on the C-shaped guide rail 21, thus realizing the opening action of the filter screen 25. Compared with the traditional direct disassembly, it is more efficient and faster.

[0045] When it is necessary to completely remove the filter screen 25, the operator moves the movable pin 261 to the side that overcomes the pressure of the spring 262, so that the longer side of the pin 2612 disengages from the locking hole 11 and the mounting hole 243, and the filter screen 25 can be pulled out.

[0046] When air filtration is required at the air outlet, simply reverse the two steps described above.

[0047] In summary, this design can balance the efficiency and speed of complete filter disassembly and assembly with the time and effort saving when opening and closing the filter. It is suitable for filter usage needs in different environments and under different working conditions. It also balances the firmness of the filter with screw installation and the convenience of disassembly and assembly of the magnetic filter.

[0048] Importantly, the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A constant air volume valve adaptable to multiple operating conditions, characterized in that: include, The valve body (1) includes a locking hole (11) that passes through its two side walls. The filter unit (2) is located at the air outlet of the valve body (1) and includes a C-shaped guide rail (21) located on the lower part of the inner wall on both sides of the valve body (1), a hinge rod (22) located inside the C-shaped guide rail (21), an I-shaped block (23) located on the C-shaped guide rail (21), a flipping frame (24) located between the hinge rods (22), a filter screen (25) located inside the flipping frame (24), and a locking assembly (26) located on the upper surface of the filter screen (25).

2. The constant air volume valve adaptable to multiple operating conditions as described in claim 1, characterized in that: The C-shaped guide rail (21) includes a rod groove (211) disposed on its upper surface, a blocking wall (212) disposed at the end opening of the C-shaped guide rail (21), and a movable groove (213) disposed on one side of the rod groove (211).

3. The constant air volume valve adaptable to multiple operating conditions as described in claim 1 or 2, characterized in that: The two ends of the hinge rod (22) are respectively hinged to the side wall of the flipping frame (24) and the inner wall of the end of the C-shaped guide rail (21); The side wall of the I-beam (23) is hinged to the bottom of the side wall of the flipping frame (24).

4. The constant air volume valve adaptable to multiple operating conditions as described in claim 3, characterized in that: The flipping frame (24) includes shielding strips (241) on both sides, limiting strips (242) on the two inner walls of the flipping frame (24), and mounting holes (243) through the top two sides of the flipping frame (24); the flipping frame (24) is U-shaped in general.

5. The constant air volume valve adaptable to multiple operating conditions as described in claim 4, characterized in that: The filter (25) includes a frame (251) disposed around it, a limiting groove (252) disposed on both sides of the frame (251), a locking groove (253) disposed on the upper end of the frame (251), and a pin hole (254) through the two side walls of the locking groove (253).

6. The constant air volume valve adaptable to multiple operating conditions as described in any one of claims 1 to 5, characterized in that: The locking assembly (26) includes a movable pin (261) and a spring (262) disposed on one side of the movable pin (261).

7. The constant air volume valve adaptable to multiple operating conditions as described in claim 6, characterized in that: The movable pin (261) includes a slider (2611) and pins (2612) disposed on both sides of the slider (2611).

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