Field control type variable air volume valve

Abstract

The utility model provides a field control type variable air volume valve, which relates to the technical field of variable air volume valves, and comprises a variable air volume valve main body, and a valve is arranged on the inner wall of the variable air volume valve main body. When the variable air volume valve is used, the filter screen can be held manually, one end of the filter screen is inserted into the rectangular hole and the rectangular groove, then the two threaded rods are rotated out of the containing groove, one end of each threaded rod is inserted into the inner wall of the groove block, then the threaded hole block is screwed, one side of the threaded hole block abuts against one side of the groove block, and the filter screen is fixed to an air inlet of the variable air volume valve body. In this way, passing air can be filtered, dust and impurities in the air are prevented from entering the variable air volume valve body to be accumulated, operation and induction of the air pressure sensor are prevented from being interfered, the using effect is improved, and meanwhile the problem that the dust and the impurities are accumulated at the position of the valve, so that the valve is clamped, and operation is affected can be solved.

Description

Technical Field

[0001] This utility model relates to the field of variable air volume valve technology, and in particular to a field-controlled variable air volume valve. Background Technology

[0002] Variable air volume (VAV) valves control airflow by adjusting the opening degree of their internal doors, thereby achieving precise temperature and humidity control. Field-controlled VAV valves are valves that adjust airflow through field operation or by receiving signals from field sensors.

[0003] During use, the variable air volume valve body is prone to drawing dust from the environment into its interior, causing it to accumulate. This can affect the accuracy of the air volume measurement inside the valve body, preventing the internal air pressure sensor from transmitting effective airflow data. Consequently, the controller may issue incorrect commands, reducing its effectiveness. It may also cause the valve to jam, affecting its operation. Utility Model Content

[0004] The technical problem this utility model aims to solve is that during use, the variable air volume valve body easily draws dust from the environment into its interior, causing dust accumulation inside.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a field-controlled variable air volume valve, including a variable air volume valve body, a valve provided on the inner wall of the variable air volume valve body, a controller provided on one side of the variable air volume valve body, a filter device provided at one end of the inlet of the variable air volume valve body, and reinforcing devices symmetrically provided on the top of the variable air volume valve body. The filter device includes a filter screen, a rectangular hole and a rectangular groove are provided on one side of the inner wall of the variable air volume valve body, one end of the filter screen is inserted into the inner wall of the rectangular hole and the rectangular groove, and a receiving groove is provided on both sides of one end of the filter screen. A threaded rod is rotatably connected to the inner wall of the receiving groove, and a threaded hole block is threadedly connected to the outer surface of the threaded rod. A groove block is symmetrically fixedly connected to one side of the variable air volume valve body, one end of the threaded rod is inserted into the inner wall of the groove block, and the threaded hole block is located on the side of the groove block away from the filter screen.

[0006] The effects achieved by the above components are as follows: By setting up a filter device, when the variable air volume valve body is installed between air ducts for use, a wind pressure sensor is usually installed inside it to receive the signal of the air volume passing through. Then, in conjunction with the controller, the internal valve of the variable air volume valve body is controlled to achieve the effect of regulating the air volume. Before using the variable air volume valve body, the filter screen can be manually held and one end inserted into the rectangular hole and rectangular slot. Then, the two threaded rods are turned out from the receiving slot so that one end is inserted into the inner wall of the groove block. Then, the screw hole block is turned so that one side of it abuts against one side of the groove block, fixing the filter screen at the air inlet of the variable air volume valve body. This can filter the passing air, preventing dust and impurities in the air from entering the interior of the variable air volume valve body and accumulating, avoiding interference with the operation and sensing of the wind pressure sensor, improving the use effect, and also preventing the accumulation at the valve that may cause the valve to jam and affect operation. On the contrary, after a certain period of use, the filter screen can be periodically removed for cleaning and replacement.

[0007] Preferably, bearings are fixedly connected to the outer surfaces of both ends of the threaded rod, and the outer ring of the bearing is rotatably connected to the inner wall of the receiving groove.

[0008] The effect achieved by the above components is that by setting bearings, rotational wear between the threaded rod and the receiving groove can be reduced, thereby improving the rotational efficiency and service life of the threaded rod.

[0009] Preferably, a handle block is fixedly connected to one side of the filter screen, and the longitudinal section of the handle block is arc-shaped.

[0010] The effect achieved by the above components is that by setting a handle block, the contact area on one side of the filter screen can be increased, making it easier to disassemble and install the filter screen.

[0011] Preferably, a protrusion is fixedly connected to one side of the filter screen, and the longitudinal section of the protrusion is trapezoidal.

[0012] The effect achieved by the above components is that by setting the protrusions, the area of ​​one end of the filter screen can be reduced, making it easier for the filter screen to be quickly aligned and snapped into the rectangular holes and rectangular slots, thus facilitating installation.

[0013] Preferably, a limiting block is fixedly connected to one side of one end of the threaded rod, and the outer surface dimension of the limiting block is larger than the inner wall dimension of the threaded hole block.

[0014] The effect achieved by the above components is that by setting a limiting block, the screw hole block can be fixed on the threaded rod, making it less likely to be lost.

[0015] Preferably, the reinforcement device includes a first reinforcement rod and a locking rod. One side of the first reinforcement rod is fixedly connected to the top side of the variable air volume valve body. A first locking hole is provided on both sides of the inner wall of one end of the first reinforcement rod. A second reinforcement rod is slidably connected to the inner wall of the first reinforcement rod. A plurality of second locking holes are provided on one side of the second reinforcement rod. One end of the locking rod is inserted into the inner wall of the first locking hole and the second locking hole.

[0016] The effect achieved by the above-mentioned components is as follows: By setting up the reinforcement device, when the variable air volume valve body is installed on the air duct, after installation, the second reinforcement rod can be manually slid inward or outward to a certain position in the inner wall of the first reinforcement rod according to the installation site conditions, so that one end of it abuts against the surrounding wall. Then, it is fixed to the wall with screws. Finally, the clamp is inserted into the first clamp hole and the corresponding second clamp hole and rotated 270 degrees to limit and fix the adjusted second reinforcement rod. This provides secondary support and reinforcement to one side of the variable air volume valve body, making it more secure and stable during use.

[0017] Preferably, a connecting rope is fixedly connected to one side of the clamping rod, and one end of the connecting rope is fixedly connected to one side of the first reinforcing rod.

[0018] The effect achieved by the above components is that by setting a connecting rope, the locking rod can be limited to one side of the first reinforcing rod, so that it is not easy to lose after being pulled out from the first locking hole and the second locking hole.

[0019] Preferably, a magnet is fixedly connected to one side of the first reinforcing rod, the clamp is made of iron, one end of the clamp is inserted into the inner wall of the magnet, and one side of the magnet and one side of the clamp are magnetically attracted to each other.

[0020] The effect achieved by the above-mentioned components is that by setting a magnet, after the lever is rotated 270 degrees, one end is inserted into the inner wall of the magnet to attract and fix it, thereby making the lever more firmly and stably engaged.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, by setting up a filtering device, before using the variable air volume valve body, the filter screen can be manually held and one end inserted into the rectangular hole and rectangular groove. Then, the two threaded rods are turned out from the receiving groove so that one end is inserted into the inner wall of the groove block. Then, the screw hole block is turned so that one side of it abuts against one side of the groove block, fixing the filter screen at the air inlet of the variable air volume valve body. This can filter the passing air, preventing dust and impurities in the air from entering the interior of the variable air volume valve body and accumulating, avoiding interference with the operation and sensing of the wind pressure sensor, improving the performance, and also preventing the valve from getting stuck and affecting operation due to accumulation at the valve. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the filter screen of this utility model;

[0026] Figure 3 for Figure 2 A three-dimensional schematic diagram of a local structure;

[0027] Figure 4 This is a three-dimensional structural diagram of the main body of the variable air volume valve of this utility model.

[0028] Legend: 1. Variable air volume valve body; 2. Filter device; 3. Reinforcing device; 4. Controller; 5. Valve; 21. Rectangular hole; 22. Rectangular groove; 23. Filter screen; 24. Storage groove; 25. Threaded rod; 26. Threaded hole block; 27. Groove block; 28. Bearing; 29. ​​Handle block; 210. Protrusion; 211. Limiting block; 31. First reinforcing rod; 32. First locking hole; 33. Second reinforcing rod; 34. Second locking hole; 35. Locking rod; 36. Connecting rope; 37. Magnet block. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1-4 As shown, the field-controlled variable air volume valve includes a variable air volume valve body 1, a valve 5 installed on the inner wall of the variable air volume valve body 1, a controller 4 installed on one side of the variable air volume valve body 1, a filter device 2 installed at one end of the inlet of the variable air volume valve body 1, and a reinforcing device 3 symmetrically installed on the top of the variable air volume valve body 1. The filter device 2 includes a filter screen 23. A rectangular hole 21 and a rectangular groove 22 are opened on one side of the inner wall of the variable air volume valve body 1. One end of the filter screen 23 is inserted into the inner wall of the rectangular hole 21 and the rectangular groove 22. A collection groove 24 is opened on both sides of one end of the filter screen 23. A threaded rod 25 is rotatably connected to the inner wall of the collection groove 24. A threaded hole block 26 is threadedly connected to the outer surface of the threaded rod 25. A groove block 27 is symmetrically fixedly connected to one side of the variable air volume valve body 1. One end of the threaded rod 25 is inserted into the inner wall of the groove block 27. The threaded hole block 26 is located on the side of the groove block 27 away from the filter screen 23. When the variable air volume valve body 1 is installed between air ducts for use, a wind pressure sensor is usually installed inside it to receive the signal of the airflow. This sensor, in conjunction with the controller 4, controls the internal valve 5 of the variable air volume valve body 1 to adjust the airflow. Before using the variable air volume valve body 1, the filter screen 23 can be manually held and one end inserted into the rectangular hole 21 and rectangular groove 22. Then, the two threaded rods 25 can be unscrewed from the receiving groove 24 so that one end is inserted into the inner wall of the recessed block 27. Then, screw the screw hole block 26 so that one side of it abuts against the side of the groove block 27, and fix the filter screen 23 at the air inlet of the variable air volume valve body 1. This can filter the passing air and prevent dust and impurities in the air from entering the interior of the variable air volume valve body 1 and accumulating, thus avoiding interference with the operation and sensing of the wind pressure sensor and improving the performance. At the same time, it can also prevent the accumulation at the valve 5 from causing the valve 5 to jam and affect the operation. On the contrary, after the filter screen 23 has been used for a certain period of time, it can be removed periodically for cleaning and replacement.

[0032] Reference Figure 2 and Figure 3As shown, this embodiment discloses that bearings 28 are fixedly connected to the outer surfaces of both ends of the threaded rod 25, and the outer ring of the bearing 28 is rotatably connected to the inner wall of the receiving groove 24. By setting the bearings 28, the rotational wear between the threaded rod 25 and the receiving groove 24 can be reduced, thereby improving the rotational efficiency and service life of the threaded rod 25. A handle block 29 is fixedly connected to one side of the filter screen 23, and the longitudinal section of the handle block 29 is arc-shaped. By setting the handle block 29, the contact area on one side of the filter screen 23 can be increased, making it easier to disassemble and install the filter screen 23.

[0033] Reference Figure 2 and Figure 3 As shown, this embodiment discloses a protrusion 210 fixedly connected to one side of the filter screen 23, the longitudinal section of which is trapezoidal. By setting the protrusion 210, the area of ​​one end of the filter screen 23 can be reduced, making it easier for the filter screen 23 to be quickly aligned and snapped into the rectangular hole 21 and the rectangular groove 22, thus facilitating installation. A limiting block 211 is fixedly connected to one side of one end of the threaded rod 25, the outer surface dimension of which is larger than the inner wall dimension of the screw hole block 26. By setting the limiting block 211, the screw hole block 26 can be limited and fixed on the threaded rod 25, preventing it from being lost.

[0034] Reference Figure 4 As shown, this embodiment discloses a reinforcement device 3 including a first reinforcement rod 31 and a locking rod 35. One side of the first reinforcement rod 31 is fixedly connected to the top side of the variable air volume valve body 1. A first locking hole 32 is provided on both sides of the inner wall of one end of the first reinforcement rod 31. A second reinforcement rod 33 is slidably connected to the inner wall of the first reinforcement rod 31. A plurality of second locking holes 34 are provided on one side of the second reinforcement rod 33. One end of the locking rod 35 is inserted into the inner wall of the first locking hole 32 and the second locking hole 34. When the variable air volume valve body 1 is installed on the air duct, after installation, the second reinforcing rod 33 can be manually slid inward or outward to a certain position in the inner wall of the first reinforcing rod 31, so that one end of it abuts against the surrounding wall. Then, it is fixed to the wall with screws. Finally, the clamping rod 35 is inserted into the first clamping hole 32 and the corresponding second clamping hole 34 and rotated 270 degrees to limit and fix the adjusted second reinforcing rod 33. This provides secondary support and reinforcement to one side of the variable air volume valve body 1, making it more secure and stable during use.

[0035] Reference Figure 4As shown, this embodiment discloses a connecting rope 36 fixedly connected to one side of the locking rod 35, with one end of the connecting rope 36 fixedly connected to one side of the first reinforcing rod 31. By setting the connecting rope 36, the locking rod 35 can be limited to one side of the first reinforcing rod 31, making it less likely to be lost after being pulled out from the first locking hole 32 and the second locking hole 34. A magnet block 37 is fixedly connected to one side of the first reinforcing rod 31. The locking rod 35 is made of iron, and one end of the locking rod 35 is inserted into the inner wall of the magnet block 37. One side of the magnet block 37 and one side of the locking rod 35 are magnetically attracted. By setting the magnet block 37, after the locking rod 35 is rotated 270 degrees, one end is inserted into the inner wall of the magnet block 37 to attract and fix it, thereby making the locking rod 35 more firmly and stably engaged.

[0036] Working principle: A field-controlled variable air volume (VAV) valve is a valve that adjusts airflow through field operation or by receiving signals from field sensors. When the VAV valve body 1 is installed between air ducts for use, a wind pressure sensor is usually installed inside to receive signals of the airflow for convenient field control. This sensor, in conjunction with the controller 4, controls the internal valve 5 of the VAV valve body 1 to achieve the effect of adjusting the airflow. Before using the VAV valve body 1, the filter screen 23 can be manually held and one end inserted into the rectangular hole 21 and rectangular slot 22. Then, the two threaded rods 25 are inserted from the receiving slot 2. 4. Turn the filter screen 23 out and insert one end into the inner wall of the groove block 27. Then, turn the screw hole block 26 so that one side of the filter screen 23 is against the side of the groove block 27. Fix the filter screen 23 at the air inlet of the variable air volume valve body 1. This will filter the passing air and prevent dust and impurities in the air from entering the interior of the variable air volume valve body 1 and accumulating. This will prevent interference with the operation and sensing of the wind pressure sensor and improve the performance. At the same time, it will also prevent the filter screen 23 from accumulating at the valve 5 and causing the valve 5 to get stuck and affect the operation. On the contrary, after the filter screen 23 has been used for a certain period of time, it can be removed periodically for cleaning and replacement.

[0037] When the variable air volume valve body 1 is installed on the duct, after installation, the second reinforcing rod 33 can be manually slid inward or outward to a certain position in the inner wall of the first reinforcing rod 31, so that one end of it abuts against the surrounding wall. Then, it is fixed to the wall with screws. Finally, the clamping rod 35 is inserted into the first clamping hole 32 and the corresponding second clamping hole 34. After rotating 270 degrees, one end is inserted into the inner wall of the magnet block 37 to attract and fix it. This makes the clamping rod 35 more firmly and stably clamped, limiting and fixing the adjusted second reinforcing rod 33. This provides secondary support and reinforcement to one side of the variable air volume valve body 1, making it more secure and stable during use.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A field-controlled variable air volume valve, comprising a variable air volume valve body (1), characterized in that: A valve (5) is provided on the inner wall of the variable air volume valve body (1). A controller (4) is provided on one side of the variable air volume valve body (1). A filter device (2) is provided at one end of the inlet of the variable air volume valve body (1). Reinforcing devices (3) are symmetrically provided on the top of the variable air volume valve body (1). The filter device (2) includes a filter screen (23). A rectangular hole (21) is opened on one side of the inner wall of the variable air volume valve body (1). A rectangular groove (22) is opened on one side of the inner wall of the variable air volume valve body (1). One end of the filter screen (23) is inserted into... The filter screen (23) is provided with a storage groove (24) on both sides of one end in the inner wall of the rectangular hole (21) and the rectangular groove (22). The inner wall of the storage groove (24) is rotatably connected to a threaded rod (25). The outer surface of the threaded rod (25) is threadedly connected to a screw hole block (26). A groove block (27) is symmetrically fixedly connected to one side of the variable air volume valve body (1). One end of the threaded rod (25) is inserted into the inner wall of the groove block (27). The screw hole block (26) is located on the side of the groove block (27) away from the filter screen (23).

2. The field-controlled variable air volume valve according to claim 1, characterized in that: The outer surfaces of both ends of the threaded rod (25) are fixedly connected with bearings (28), and the outer ring of the bearing (28) is rotatably connected to the inner wall of the receiving groove (24).

3. The field-controlled variable air volume valve according to claim 1, characterized in that: A handle block (29) is fixedly connected to one side of the filter screen (23), and the longitudinal section of the handle block (29) is arc-shaped.

4. The field-controlled variable air volume valve according to claim 1, characterized in that: A protrusion (210) is fixedly connected to one side of the filter screen (23), and the longitudinal section of the protrusion (210) is trapezoidal.

5. The field-controlled variable air volume valve according to claim 1, characterized in that: One end of the threaded rod (25) is fixedly connected to a limiting block (211), and the outer surface dimension of the limiting block (211) is larger than the inner wall dimension of the threaded hole block (26).

6. The field-controlled variable air volume valve according to claim 1, characterized in that: The reinforcement device (3) includes a first reinforcement rod (31) and a clamping rod (35). One side of the first reinforcement rod (31) is fixedly connected to the top side of the variable air volume valve body (1). A first clamping hole (32) is provided on both sides of the inner wall of one end of the first reinforcement rod (31). A second reinforcement rod (33) is slidably connected to the inner wall of the first reinforcement rod (31). A plurality of second clamping holes (34) are provided on one side of the second reinforcement rod (33). One end of the clamping rod (35) is inserted into the inner wall of the first clamping hole (32) and the second clamping hole (34).

7. The field-controlled variable air volume valve according to claim 6, characterized in that: A connecting rope (36) is fixedly connected to one side of the clamp (35), and one end of the connecting rope (36) is fixedly connected to one side of the first reinforcing rod (31).

8. The field-controlled variable air volume valve according to claim 6, characterized in that: A magnet block (37) is fixedly connected to one side of the first reinforcing rod (31). The clamping rod (35) is made of iron. One end of the clamping rod (35) is inserted into the inner wall of the magnet block (37). One side of the magnet block (37) and one side of the clamping rod (35) are magnetically attracted.

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