Static pressure box with filtering function

Abstract

The utility model discloses a plenum chamber with a filtering function, which relates to the technical field of plenum chambers and comprises a plenum chamber main body, an assembling groove is arranged at the bottom end of the plenum chamber main body; the bottom cover plate is movably embedded in the inner side of the assembling open groove, a locking mechanism is arranged between the static pressure box body and the bottom cover plate, the bottom end of the bottom cover plate is movably connected with a rotary knob rotating shaft, and the rotary knob rotating shaft is used for driving the locking mechanism; the filter screen is fixedly arranged on the side, facing the inner cavity of the static pressure box body, of the bottom cover plate. According to the utility model, the bottom end of the plenum chamber main body is arranged to be in the opening shape with the assembly slot, the bottom cover plate is arranged in the assembly slot, the filter screen is fixed with the bottom cover plate, and the bottom cover plate is detachably assembled with the plenum chamber main body through the locking mechanism controlled by the rotary knob rotating shaft; therefore, maintenance personnel can conveniently disassemble and assemble the bottom cover plate and the filter screen on the plenum chamber main body through tools at a low position, and the filter screen in the plenum chamber main body can be disassembled, assembled and cleaned conveniently and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of static pressure boxes, in particular to a static pressure box with a filtering function. Background Art

[0002] A static pressure box is a necessary accessory for a ventilation system to reduce dynamic pressure, increase static pressure, stabilize air flow and reduce air flow vibration, which can make the ventilation effect more ideal.

[0003] In the prior art, a filter screen assembly is generally configured in the static pressure box to filter dust and impurities in the air. After long-term use, a large amount of dust and impurities will adhere to the filter screen assembly in the static pressure box, resulting in the blockage of the filter screen holes and affecting the ventilation effect. Therefore, regular maintenance is required to clean the dust and impurities adhering to the filter screen assembly. However, nowadays, since the static pressure box is generally installed at a high position and the cover plate on the static pressure box is assembled and fixed by fasteners, it makes the maintenance personnel need to disassemble and clean the static pressure box and its internal filter screen assembly at a high position, resulting in a high maintenance difficulty for the filter screen assembly in the static pressure box. At the same time, there are great safety hazards in working at heights and it is not convenient to use. For this reason, a static pressure box with a filtering function is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a static pressure box with a filtering function to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A static pressure box with a filtering function, comprising:

[0006] A static pressure box main body, and an assembly slot is opened at the bottom end of the static pressure box main body;

[0007] A bottom cover plate, which is movably embedded in the inner side of the assembly slot. A locking mechanism is arranged between the static pressure box main body and the bottom cover plate, and the locking mechanism is used for locking the position of the bottom cover plate in the assembly slot. A knob rotating shaft is movably connected to the bottom end of the bottom cover plate, and the knob rotating shaft is used for driving the locking mechanism;

[0008] A filter screen, which is fixedly arranged on one side of the bottom cover plate facing the inner cavity of the static pressure box main body.

[0009] Preferably, a connecting seat is fixedly connected to one side of the bottom cover plate facing the inner cavity of the static pressure box main body, a mortise joint groove is opened at the top of the connecting seat, a connecting block is fixedly connected to one end of the filter screen facing the bottom cover plate, and the outer wall of the connecting block is movably inserted into the inner side of the mortise joint groove.

[0010] Preferably, the locking mechanism includes a locking tongue which is movably inserted into both sides of the bottom cover plate. A transmission component is arranged inside the bottom cover plate and is used to drive the locking tongue to move axially along the bottom cover plate. Limiting locking grooves matching the locking tongue are formed on both side walls of the assembly slot.

[0011] Preferably, the transmission component includes a driving plate which is rotatably arranged in the middle of the inner cavity of the bottom cover plate. The end of the knob rotating shaft is fixedly inserted into the middle of the driving plate. A return spring is sleeved on the outer wall of the locking tongue and is used to drive the locking tongue to automatically retract into the inner cavity of the bottom cover plate.

[0012] Preferably, one ends of two locking tongues on the same side of the bottom cover plate are fixedly connected with a connecting plate, and two ends of the return spring are respectively fixedly connected with the connecting plate and the opposite side of the bottom cover plate.

[0013] Preferably, a plugging slot is formed at the downward end of the knob rotating shaft, a sector-shaped slot is formed at the position corresponding to the knob rotating shaft at the bottom end of the bottom cover plate, and a blocking bar is movably arranged in the sector-shaped slot. The outer wall of the blocking bar is fixedly connected with the end of the knob rotating shaft.

[0014] The technical effects and advantages of the present utility model:

[0015] In the present utility model, the bottom end of the static pressure box body is set to be an open shape with an assembly slot, and the bottom cover plate is assembled in the assembly slot. Since the filter screen is fixed to the bottom cover plate, and the bottom cover plate is detachably assembled with the static pressure box body through a locking mechanism controlled by the knob rotating shaft, it is convenient for maintenance personnel to disassemble and assemble the bottom cover plate and the filter screen on the static pressure box body at a low position through tools, so that the disassembly, assembly and cleaning work of the filter screen in the static pressure box body is convenient and efficient. At the same time, the potential safety hazards in high-altitude operations are avoided, and the use requirements are better met. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 It is a three-dimensional structure schematic diagram of the static pressure box body of the present utility model.

[0018] Figure 3 It is a schematic diagram of the top view sectional structure of the bottom cover of the present utility model.

[0019] Figure 4 It is a schematic diagram of the partial sectional structure of the side view of the bottom cover of the present utility model.

[0020] Figure 5 It is a three-dimensional structure schematic diagram of the bottom cover of the present utility model.

[0021] In the figure: 100, static pressure box main body; 101, assembly slot; 102, limit lock slot; 200, bottom cover plate; 201, locking tongue; 202, connecting plate; 203, return spring; 204, driving plate; 205, knob rotating shaft; 206, insertion slot; 207, sector slot; 300, filter screen; 301, connecting seat; 302, connecting block. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] The present invention provides a static pressure box with a filtering function as Figures 1-5 shown, which includes a static pressure box main body 100, a bottom cover plate 200, and a filter screen 300. An assembly slot 101 is opened at the bottom end of the static pressure box main body 100, and the bottom cover plate 200 is movably embedded inside the assembly slot 101. A sealing gasket can be assembled between the bottom cover plate 200 and the assembly slot 101 to increase the airtightness of the connection between the two. A locking mechanism is provided between the static pressure box main body 100 and the bottom cover plate 200. The locking mechanism is used to lock the position of the bottom cover plate 200 in the assembly slot 101. The bottom cover plate 200 can be fixed in the assembly slot 101 through the locking mechanism. A knob rotating shaft 205 is movably connected to the bottom end of the bottom cover plate 200. The knob rotating shaft 205 is used to drive the locking mechanism. The filter screen 300 is fixedly arranged on one side of the bottom cover plate 200 facing the inner cavity of the static pressure box main body 100. The locking or unlocking state of the bottom cover plate 200 by the locking mechanism is controlled through the knob rotating shaft 205, so as to facilitate the disassembly of the bottom cover plate 200 in the assembly slot 101 and achieve one-key unlocking. In this way, the disassembly of the bottom cover plate 200 can be made more convenient. At the same time, in cooperation with the fixing of the filter screen 300 and the bottom cover plate 200, the filter screen 300 can be disassembled together when the bottom cover plate 200 is disassembled. Since the bottom end of the static pressure box main body 100 is set to be open and sealed with the bottom cover plate 200, the opening at the bottom end of the static pressure box main body 100 can be directly blocked or opened from below, making the disassembly of the filter screen 300 more convenient. To enhance the airtightness between the filter screen 300 and the inner side of the static pressure box main body 100, a U-shaped sealing strip can be assembled at the installation position of the filter screen 300 on the inner side of the static pressure box main body 100. When the filter screen 300 is inserted into the inner side of the static pressure box main body 100 in cooperation with the filter screen 300, an extrusion sealing state is formed with the sealing strip.

[0024] In a preferred embodiment, a connecting seat 301 is fixedly connected to the side of the bottom cover plate 200 facing the inner cavity of the static pressure box body 100. A mortise groove is formed at the top of the connecting seat 301. One end of the filter net 300 facing the bottom cover plate 200 is fixedly connected with a connecting block 302. The outer wall of the connecting block 302 is movably inserted into the inner side of the mortise groove. The bottom of the filter net 300 is inserted into the mortise groove of the connecting seat 301 through the connecting block 302, so that the disassembly and assembly of the filter net 300 on the bottom cover plate 200 are more convenient.

[0025] It should be noted that the locking mechanism includes a locking tongue 201. The locking tongue 201 is movably inserted on both sides of the bottom cover plate 200. A transmission component is arranged inside the bottom cover plate 200. The transmission component is used to drive the locking tongue 201 to move axially along the bottom cover plate 200. Limit locking grooves 102 matching the locking tongue 201 are formed on both side walls of the assembly slot 101. In some embodiments, the transmission component includes a driving plate 204. The driving plate 204 is rotatably arranged in the middle of the inner cavity of the bottom cover plate 200. The end of the knob rotating shaft 205 is fixedly inserted into the middle of the driving plate 204. A return spring 203 is sleeved on the outer wall of the locking tongue 201. The return spring 203 is used to drive the locking tongue 201 to automatically retract into the inner cavity of the bottom cover plate 200. One ends of two locking tongues 201 on the same side of the bottom cover plate 200 are fixedly connected with a connecting plate 202. Both ends of the return spring 203 are fixedly connected with the connecting plate 202 and the opposite side of the bottom cover plate 200 respectively. When disassembling the bottom cover plate 200 at the bottom end position of the static pressure box body 100, only need to rotate the knob rotating shaft 205 to drive the driving plate 204 to rotate. Since the driving plate 204 is in a rhomboid shape, the two ends with longer axial distances rotate from the horizontal transverse position to the longitudinal position. In this way, the extrusion on the connecting plate 202 can be cancelled. By the elastic thrust of the return spring 203, the locking tongue 201 can retract into the bottom cover plate 200 and separate from the limit locking groove 102 in the assembly slot 101. In this way, the bottom cover plate 200 can be taken out vertically downward, so as to facilitate the cleaning of the filter net 300 on the bottom cover plate 200. When assembling, only need to position the bottom cover plate 200 in the assembly slot 101 and then rotate the knob rotating shaft 205 in the reverse direction. The operation is simple and convenient.

[0026] Further, a socket groove 206 is formed at the lower end of the knob rotating shaft 205. The socket groove 206 can be in a shape of a single slot or a cross slot, so as to facilitate docking the knob rotating shaft 205 with a support rod having a corresponding shape at the end, and forming a snap connection with the knob rotating shaft 205, thereby facilitating rotating the knob rotating shaft 205 at a lower position to drive the unlocking or locking of the locking mechanism, so as to facilitate unlocking or locking operations between the bottom cover plate 200 and the static pressure box main body 100 at a lower position by using a corresponding tool. A sector groove 207 is formed at a position corresponding to the knob rotating shaft 205 at the bottom end of the bottom cover plate 200. A blocking bar is movably arranged in the sector groove 207. The outer wall of the blocking bar is fixedly connected to the end of the knob rotating shaft 205. The sector groove 207 and the blocking bar cooperate to limit the rotation angle of the knob rotating shaft 205, so that when the blocking bar is located at both end positions of the sector groove 207, it indicates that the locking mechanism is in two positions of unlocking or locking, thereby increasing the convenience of operation.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A static pressure box with filtering function, characterized in that: include: A static pressure box body (100), wherein an assembly slot (101) is provided at the bottom end of the static pressure box body (100); A bottom cover plate (200), the bottom cover plate (200) being movably embedded in the inner side of the assembly slot (101), a locking mechanism being provided between the static pressure box body (100) and the bottom cover plate (200), the locking mechanism being used to lock the bottom cover plate (200) in the position in the assembly slot (101), a knob shaft (205) being movably connected to the bottom end of the bottom cover plate (200), the knob shaft (205) being used to drive the locking mechanism; A filter screen (300) is fixedly arranged on a side of the bottom cover plate (200) facing the inner cavity of the static pressure box body (100).

2. A static pressure box with filtering function according to claim 1, characterized in that: A connecting seat (301) is fixedly connected to one side of the bottom cover plate (200) facing the inner cavity of the static pressure box body (100), a mortise groove is provided on the top of the connecting seat (301), and a connecting block (302) is fixedly connected to one end of the filter screen (300) facing the bottom cover plate (200), and an outer wall of the connecting block (302) is movably plugged into the inner side of the mortise groove.

3. A static pressure box with filtering function according to claim 2, characterized in that: The locking mechanism comprises a locking tongue (201), the locking tongue (201) being movably plugged into two sides of the bottom cover plate (200), a transmission assembly being provided inside the bottom cover plate (200), the transmission assembly being used for driving the locking tongue (201) to move axially along the bottom cover plate (200), and two side walls of the assembly slot (101) being provided with position-limiting locking grooves (102) matching the locking tongue (201).

4. A static pressure box with filtering function according to claim 3, characterized in that: The transmission assembly comprises a driving plate (204), the driving plate (204) is rotatably arranged in the middle of the inner cavity of the bottom cover plate (200), the end of the knob shaft (205) is fixedly plugged with the middle of the driving plate (204), and the outer wall of the lock tongue (201) is sleeved with a return spring (203), and the return spring (203) is used to drive the lock tongue (201) to automatically retract into the inner cavity of the bottom cover plate (200).

5. A static pressure box with filtering function according to claim 4, characterized in that: One end of the two locking tongues (201) located on the same side of the bottom cover plate (200) is fixedly connected to a connecting plate (202), and two ends of the return spring (203) are respectively fixedly connected to the connecting plate (202) and the opposite side of the bottom cover plate (200).

6. A static pressure box with filtering function according to claim 5, characterized in that: A plug-in slot (206) is provided at one end of the knob shaft (205) facing downward, a fan-shaped slot (207) is provided at the bottom end of the bottom cover plate (200) at a position corresponding to the knob shaft (205), a blocking bar is movably provided in the fan-shaped slot (207), and an outer wall of the blocking bar is fixedly connected to the end of the knob shaft (205).

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