Small-space filter screen device

Abstract

The utility model discloses a small-space filter screen device which comprises a hinge assembly, a movable cover plate of a positioning module between the hinge assembly and a filter cotton frame assembly, the filter cotton frame assembly, a rotating shaft clamping plate, a filter cotton pressing plate assembly, a sealing rubber strip and flame-retardant filter cotton. The filter cotton frame assembly comprises a filter cotton frame and a clamping reed; a clamping reed is fixed at the top of the filter cotton frame; l-shaped notches are formed in the left and right sides of the lower end of the filter cotton frame; a shifting sheet is arranged at the side end of the filter cotton frame and is used as a holding part for laterally overturning the filter cotton frame; holes matched with the elastic pressing sheets are formed in the filter cotton frame; the rotating shaft clamping plates are symmetrically fixed to the left side and the right side of the lower end of the filter cotton frame and used for sealing the L-shaped notches and limiting the vertical position of the filter cotton pressing plate assembly. The sealing rubber strip is attached to the filter cotton pressing plate; the elastic pressing sheet is rotationally mounted on the mounting part of the movable cover plate and is used for fixing and limiting the filter cotton frame. Through a corresponding operation method, a smaller overturning area can be realized in a smaller space.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of rail transit, in particular to a small-space filter screen device. BACKGROUND

[0002] For the electrical equipment generally installed in the lower part of the vehicle, the internal power device is cooled by forced air cooling. Since forced air cooling is adopted, a centrifugal fan is necessarily used to generate suction to suck air from the air inlet outside the equipment, and then the air enters the air duct after passing through the filter screen (the filter screen generally adopts a plurality of 10-mesh silk screens stacked or a single 30-mesh stainless steel screen, or fire-retardant filter cotton to filter the air entering the air duct of the cabinet), and then the heat conducted out of the radiator fins is taken away, and then the air is thrown out from the fan, blows to the magnetic elements (generally inductors and transformers), and finally is discharged from the cabinet. The filter screen device for air inlet needs to be more convenient and easier to operate, and on the basis of reliability, the operation speed is as fast as possible. The improvement of speed can reduce the maintenance time and cost per time.

[0003] The air inlet device can only be installed in some narrow areas. In addition to the requirement that the filter screen or filter cotton can be disassembled for cleaning, the air inlet device also needs to be smoothly and conveniently opened or closed in a small space.

[0004] The conventional air inlet device generally adopts a bolted one-circle fastening stainless steel screen plate or a hinged installation frame with a door lock, and a plurality of stainless steel screens are inserted into the installation frame. The entire installation frame can be flipped. When cleaning is needed, the stainless steel screen is disassembled, cleaned with water, and then reinstalled after drying. The disadvantages are that the bolted installation is time-consuming and laborious to disassemble, or the door lock fixed form has a high cost. The large-size filter frame is flipped on the side or upside down, and occupies a large volume after being unfolded. For the air inlet device in a small space, it must be able to realize a smaller flipping area or opening area in a smaller space. SUMMARY

[0005] The purpose of the present application is to provide a small-space filter screen device, which realizes bolt-free, door lock-free, and fast operation by twice flipping, and can realize a smaller flipping area in a smaller space.

[0006] The technical solution for achieving the purpose of the present application is as follows:

[0007] A small-space filter screen device comprises:

[0008] A hinge assembly is used for the hinge connection between the filter cotton frame assembly and the movable cover plate assembly, and realizes the left-right flipping of the filter cotton frame assembly.

[0009] The active cover plate assembly comprises an active cover plate; the active cover plate is provided with an active cover plate air vent, and the periphery of the active cover plate air vent is provided with an edge; the active cover plate is provided with a positioning module when the filter screen frame assembly is closed, and is provided with an installation part of an elastic pressing piece;

[0010] The filter screen frame assembly comprises a filter screen frame assembly, a rotating shaft clamping plate, a filter screen pressing plate assembly, a sealing rubber strip and a fireproof filter screen; the filter screen frame assembly comprises a filter screen frame and a clamping spring piece; the inner side of the filter screen frame is turned up and is provided with a filter opening; the top of the filter screen frame is turned up and is provided with a notch, which is used as an extension position of a protruding part of the fireproof filter screen, and the clamping spring piece is fixed in the notch and is used for limiting the fireproof filter screen; the lower end of the filter screen frame is provided with L-shaped notches on the left and right sides, which are used for rotatingly connecting the filter screen pressing plate assembly and realizing up-down overturning of the filter screen frame assembly; the middle of one side end of the filter screen frame is provided with a notch, and a pushing piece is arranged in the notch and is used as a holding part for laterally overturning the filter screen frame; the filter screen frame is provided with a fixing piece, and the fixing piece is provided with a hole matched with the elastic pressing piece; the rotating shaft clamping plate is symmetrically fixed on the left and right sides of the lower end of the filter screen frame, is used for closing the L-shaped notches so that the filter screen pressing plate assembly cannot be separated from the L-shaped notches, and limits the up-down position of the filter screen pressing plate assembly; the sealing rubber strip is attached to the filter screen pressing plate and can be in contact with the edge surface of the active cover plate air vent to form a seal;

[0011] The elastic pressing piece is rotatably installed on the installation part of the active cover plate and is used for fixing and limiting the filter screen frame.

[0012] An operation method of a small-space filter screen device is provided, and an assembly process is as follows:

[0013] The positioning module of the filter screen frame assembly and the installation part of the elastic pressing piece are fixed on the active cover plate assembly; and then the elastic pressing piece is installed on the installation part;

[0014] The sealing rubber strip is attached to the filter screen pressing plate assembly, and then the filter screen pressing plate assembly is horizontally inserted into the L-shaped notches, and then the rotating shaft clamping plate is fixed with the filter screen frame assembly to limit the filter screen pressing plate assembly; the filter screen frame assembly and the active cover plate assembly are connected with a hinge;

[0015] The filter screen pressing plate assembly is turned down, the fireproof filter screen is laid, and the filter screen pressing plate assembly is turned up; when the filter screen pressing plate assembly is close to the attachment state, the filter screen pressing plate welding part is in sliding contact with the elastic pressing piece, at this time, the inner side of the filter screen pressing plate welding part clamps the fireproof filter screen together with the inner side of the filter screen pressing plate welding part, and the assembly of the filter screen frame assembly is completed; the filter screen frame assembly is laterally rotated and attached to the surface of the active cover plate assembly; when the filter screen frame assembly is rotated to the attachment position on the active cover plate assembly, the positioning module between the active cover plate and the filter screen frame assembly is aligned, and the sealing rubber strip is in contact with the edge surface of the active cover plate air vent; the elastic pressing piece is pinched and pulled up to rotate and press the filter screen frame assembly, and the installation of the air inlet filter screen device is completed.

[0016] The present application has the following advantages compared with the prior art:

[0017] The small-space filter screen device has simple structure, low cost and convenient operation in small space, can quickly perform secondary overturning and replace filter cotton, realizes faster operation efficiency, and reduces operation difficulty and use cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of the small-space filter screen device fixed on the cabinet.

[0019] Figure 2 A perspective view of the small-space filter screen device in an open state.

[0020] Figure 3 A perspective view of the small-space filter screen device.

[0021] Figure 4 A Figure 3 An enlarged view of area A.

[0022] Figure 5 A Figure 3 An enlarged view of area B.

[0023] Figure 6 An assembly structure diagram of the movable cover plate assembly.

[0024] Figure 7 An exploded view of the elastic pressing plate assembly.

[0025] Figure 8 An installation schematic diagram of the flame-retardant filter cotton.

[0026] Figure 9 An exploded view of the filter cotton frame assembly.

[0027] Figure 10 A structure diagram of the filter cotton frame assembly.

[0028] Figure 11 A structure diagram of the filter cotton pressing plate assembly.

[0029] Figure 12 A paste diagram of the sealing rubber strip. DETAILED DESCRIPTION

[0030] The present application will be further described below in combination with the drawings and specific embodiments.

[0031] In combination with Figures 1-12The small space filter screen device of the embodiment is fixed on the cabinet body 1, the cabinet body 1 is mainly formed by welding and riveting of aluminum alloy material; the main function is to provide a cabin for installation of power unit modules (such as traction inverter modules or charger modules and the like), magnetic elements and other electrical components, and to provide an installation position for the air inlet filter screen device; the small space filter screen device of the embodiment comprises a movable cover plate assembly 2, a filter cotton frame assembly 3, an elastic pressing piece 4 and a hinge assembly;

[0032] The movable cover plate assembly 2 comprises a movable cover plate 2-1, an M10 rivet screw 2-2 (a first rivet screw), and an M6 rivet screw 2-3; the movable cover plate 2-1 is cut, bent, and formed by riveting from an aluminum alloy plate; mainly provides mounting positions for a filter frame assembly 3, an elastic pressing piece 4, and a hinge assembly, and is fastened and sealed with the cabinet 1 in combination with a sealing strip; the cover plate 2-1 is provided with a movable cover plate air vent 2-1-1, and edges are arranged around the movable cover plate air vent 2-1-1 by bending; the M10 rivet screw 2-2 and the M6 rivet screw 2-3 are fixed on the movable cover plate 2-1 by a riveting process; the M10 rivet screw 2-2 is a stainless steel purchased part, is riveted on the movable cover plate 2-1 by a press, and mainly plays a limiting role in limiting a limiting waist hole 3-1-1-4; the M6 rivet screw 2-3 is a stainless steel purchased part, is riveted on the movable cover plate 2-1 by the press, and mainly provides a threaded interface for a spring piece fixing shaft 5. The filter frame assembly 3 comprises a filter frame assembly 3-1, a countersunk screw 3-2, a rotating shaft clamping plate 3-3, a filter pressing plate assembly 3-4, a sealing rubber strip 3-5, and a fireproof filter cotton 3-6; the filter frame assembly 3-1 comprises a filter frame 3-1-1 and a clamping spring piece 3-1-2; the filter frame 3-1-1 is cut from a stainless steel material, is formed into a box body shape with inside flanging by four-edge bending, and is provided with a plurality of strip-shaped filter ports; a top flange of the filter frame 3-1-1 is provided with a notch, which is an extension position of a protruding part of the fireproof filter cotton 3-6, and the clamping spring piece 3-1-2 is fixed in the notch; the clamping spring piece 3-1-2 is cut from a spring steel material, is formed by bending, and is combined with the filter frame 3-1-1 by welding; left and right sides of a lower end of the filter frame 3-1-1 are provided with L-shaped notches 3-1-1-1, which are used for rotatingly connecting the filter pressing plate assembly 3-4; a middle of a right side of the filter frame 3-1-1 is provided with a notch, and a pushing piece 3-1-1-2 is arranged in the notch by a bending process, which is a holding part for laterally overturning the filter frame 3-1-1; a right side of an upper end of the filter frame 3-1-1 is provided with a fixing piece, the fixing piece is provided with a rectangular hole 3-1-1-3 and a limiting waist hole 3-1-1-4, and the limiting waist hole 3-1-1-4 is used for cooperating with the M10 rivet screw 2-2. The filter pressing plate assembly 3-4 comprises a filter pressing plate 3-4-1 and a rotating shaft 3-4-2; the filter pressing plate 3-4-1 is provided with a plurality of strip-shaped filter ports, is cut from a stainless steel material, and is formed by pressing a dead edge; the rotating shaft 3-4-2 is fixed to a lower end of the filter pressing plate 3-4-1; the rotating shaft 3-4-2 is formed by turning a stainless steel round steel, and both ends of the rotating shaft 3-4-2 are provided with thin shafts, which are used for cooperating with the L-shaped notches 3-1-1-1 on both sides of the filter frame 3-1-1, so that the filter pressing plate 3-4-1 is rotationally connected with the filter frame 3-1-1.The rotating shaft clamping plate 3-3 is cut and press riveted from stainless steel material, is fixed symmetrically at the lower end of the filter cotton frame 3-1-1 through the countersunk screw 3-2, is used for closing the L-shaped gap 3-1-1-1 so that the rotating shaft 3-4-2 cannot be separated from the L-shaped gap 3-1-1-1, and the lower end of the rotating shaft clamping plate 3-3 is provided with a semicircular gap, the semicircular gap is clamped on the upper end of the rotating shaft 3-4-2, and the up-down position of the rotating shaft 3-4-2 is limited. The sealing rubber strip 3-5 is a purchased part, can be attached to the filter cotton pressing plate 3-4-1, can be in contact with the edge surface of the movable cover plate vent 2-1-1 and compressed by a certain distance, and then a seal is formed; the flame-retardant filter cotton 3-6 is a purchased part, has the functions of flame retardation and ventilation, can realize ventilation while filtering most of the particulate dust, lint and other substances outside; the elastic pressing piece 4 is cut and bent from spring steel material; can rotate, and elastically press the filter cotton frame rectangular hole 3-1-1-3; the M6 press rivet screw 2-3 is provided with an enlarged washer 6, the elastic pressing piece 4 passes through the M6 press rivet screw 2-3 and is limited on the M6 press rivet screw 2-3 through the limiting hexagon nut 5, the limiting hexagon nut 5 is turned from a stainless steel hexagonal bar, can pass through the elastic pressing piece 4 and the enlarged washer 6 and be tightened with the M6 press rivet screw 2-3; can limit the up-down height of the elastic pressing piece 4, so that the elastic pressing piece 4 can still rotate; the enlarged washer 6 is made of stainless steel material, can prevent the elastic pressing piece 4 from rubbing and damaging the surface paint of the movable cover plate 2-1 when being pressed or rotated. The movable cover plate 2-1 is provided with two elastic pressing pieces 4. The hinge assembly is two groups, including a hinge A 7 and a hinge B 8; the hinge A 7 is a purchased part, one end of which is a protruding cylindrical segment, commonly known as a male hinge, and there are two internal threaded holes in the side area, which are used for fixing with the cover plate 2-1; the hinge B 8 is a purchased part, one end of which is an internal cylindrical hole, commonly known as a female hinge, and there are two internal threaded holes in the side area, which are used for fixing with the filter cotton frame 3-1-1.

[0033] The assembly process is as follows:

[0034] First, the hinge A 7 is fastened on the movable cover plate assembly 2 from the back through the countersunk screw, then the enlarged washer 6 is attached to the M6 press rivet screw 2-3, then the elastic pressing piece 4 passes through the M6 press rivet screw 2-3 and is attached to the surface of the enlarged washer 6; and then the limiting hexagon nut 5 is screwed in to the bottom;

[0035] Secondly, the sealing strip 3-5 is first attached to the filter cotton pressing plate assembly 3-4, and then the filter cotton pressing plate assembly 3-4 is horizontally inserted into the L-shaped gap 3-1-1-1 through the rotating shaft 3-4-2, and then two countersunk screws are used to pass through the filter cotton frame assembly 3-1 to fasten the rotating shaft clamping plate 3-3, and the semicircular gap at the lower end of the clamping plate is just clamped on the thin shaft protruding at both ends of the rotating shaft 3-4-2, forming a wrapped state; the up-and-down rotation and limiting can be realized; then four countersunk screws are used to fasten the hinge B 8; through the hinging of the male and female hinges, the left-and-right rotation function is realized;

[0036] Finally, the filter cotton pressing plate assembly 3-4 is turned down to open, the fire-retardant filter cotton 3-6 is laid, and then it is turned up and pushed; when it is close to the attachment state, the filter cotton pressing plate welding piece 3-4 slides and contacts the pressure spring sheet 3-1-2, at this time the inner side of the filter cotton pressing plate welding piece 3-4 and the inner side of the filter cotton pressing plate welding piece 3-4 clamp the fire-retardant filter cotton 3-6; at this time the assembly of the filter cotton frame assembly 3 is completed, and by rotating to the right, it is attached to the surface of the movable cover plate assembly 2; during the rotation process, due to the limiting of the clamping spring sheet 3-1-2, the fire-retardant filter cotton 3-6 is not deformed and does not fall off (if this function is not available, the filter cotton pressing plate welding piece 3-4 may automatically turn over and fall, which may also cause the fire-retardant filter cotton 3-6 to fall off); when the filter cotton frame assembly 3 is rotated in place and attached to the movable cover plate assembly 2, the limiting waist hole 3-1-1-4 is located in the area of the M10 pressure rivet screw 2-2 at this time (together with the hinge, forming the up-and-down limiting effect, so that the air vent is aligned), and at the same time the sealing strip 3-5 is in contact with the corner surface of the movable cover plate air vent 2-1-1 and is compressed; at this time, the elastic pressing piece 4 is pinched and pulled up and rotated and placed in the filter cotton frame rectangular hole 3-1-1-3, and the filter cotton frame assembly 3 is pressed by elastic contraction, and it is pressed; at this time the installation of the air inlet filter net device is completed.

[0037] When the fire-retardant filter cotton 3-6 needs to be replaced, first pinch the elastic pressing piece 4 to rotate it away from the pressing area, then put your fingers into the groove and hold the actuating piece 3-1-1-2, and then the filter cotton frame assembly 3 can be turned over to the left; then pinch the fire-retardant filter cotton 3-6 (upper area) that protrudes a section and pull it outwards; when the filter cotton is pulled, it will also turn the filter cotton pressing plate welding piece 3-4 outwards, and after the elastic pressure over the clamping spring sheet 3-1-2, it is finally turned over to the bottom, and the filter cotton is taken out to realize replacement.

[0038] The whole structure is simple, low in cost, and convenient to operate in a small space; it can quickly perform secondary turning and replace the filter cotton, realize faster operation, and reduce the operation difficulty and use cost.

Claims

1. A small space filter device, characterized in that: include: The hinge assembly is used to hinge the filter cotton frame assembly with the movable cover assembly to achieve left and right flipping of the filter cotton frame assembly; The movable cover assembly comprises a movable cover; the movable cover is provided with a movable cover vent, and the movable cover vent is provided with corners around it; a positioning module for closing the filter cotton frame assembly is provided between the movable cover and the filter cotton frame assembly, and a mounting portion for an elastic pressing piece is provided; The filter cotton frame assembly includes a filter cotton frame assembly, a rotating shaft clamping plate, a filter cotton pressure plate assembly, a sealing strip and a flame retardant filter cotton; the filter cotton frame assembly includes a filter cotton frame and a retaining spring; the inner side of the filter cotton frame is flanged and provided with a filter port; the top flange of the filter cotton frame is provided with a notch as the extension position of the protruding part of the flame retardant filter cotton, and a retaining spring is fixed in the notch for limiting the flame retardant filter cotton; the left and right sides of the lower end of the filter cotton frame are provided with L-shaped notches for rotating and connecting the filter cotton pressure plate assembly to realize the up and down flipping of the filter cotton frame assembly The filter cotton frame is provided with a notch in the middle of one side end, and a toggle piece is provided in the notch, which serves as a gripping part for flipping the filter cotton frame sideways; the filter cotton frame is provided with a fixing piece, and the fixing piece is provided with a hole that cooperates with the elastic pressing piece; the rotating shaft clamping plate is symmetrically fixed to the left and right sides of the lower end of the filter cotton frame, and is used to close the L-shaped notch so that the filter cotton pressing plate assembly cannot be separated from the L-shaped notch, and to limit the upper and lower positions of the filter cotton pressing plate assembly; the sealing strip is attached to the filter cotton pressing plate and can contact with the angular surface of the vent of the movable cover to form a seal; The elastic pressing piece is rotatably mounted on the mounting portion of the movable cover plate and is used to fix and limit the filter cotton frame.

2. The small space filter device according to claim 1, characterized in that: The positioning module includes a first rivet arranged on the movable cover plate and a limiting waist hole arranged on the fixing plate; when the filter cotton frame assembly is rotated into place and fits on the movable cover plate assembly, the limiting waist hole is located in the area of ​​the first rivet.

3. The small space filter device according to claim 1, characterized in that: The movable cover is provided with a second rivet, the second rivet is provided with a gasket, and the elastic pressing piece is limited on the second rivet by a limiting nut.

4. The small space filter device according to claim 1, characterized in that: The filter cotton pressing plate assembly includes a filter cotton pressing plate and a rotating shaft; the filter cotton pressing plate is provided with a filter port; a rotating shaft is fixed to the lower end of the filter cotton pressing plate for cooperating with the L-shaped notches on both sides of the filter cotton frame; a semicircular notch is provided at the lower end of the rotating shaft clamping plate, and the semicircular notch is clamped at the upper end of the rotating shaft to limit the upper and lower positions of the rotating shaft.

5. The small space filter device according to claim 1, characterized in that: The fixing plate is provided with a rectangular hole which serves as a hole for cooperating with the elastic pressing plate.

6. The small space filter device according to claim 1, characterized in that: The hinge assembly consists of two groups, including hinge A and hinge B. Hinge A is fixed to the cover plate; hinge B is fixed to the filter cotton pressing plate assembly.

7. The small space filter device according to claim 1, characterized in that: The movable cover is provided with two elastic pressing sheets.

8. The small space filter device according to claim 4, characterized in that: The rotating shaft clamping plate is symmetrically fixed to the left and right sides of the lower end of the filter cotton frame through countersunk screws.

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