CN216058096U

CN216058096U - Air exhaust device for broadcast television transmitter room

Info

Publication number: CN216058096U
Application number: CN202122578854.6U
Authority: CN
Inventors: 宗启章; 魏宗琴; 马志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-15
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses an exhaust device for a broadcast television transmitter room, which comprises an exhaust pipeline and an exhaust fan, wherein the exhaust fan is arranged on the inner wall part of the exhaust pipeline through a moving mechanism, the moving mechanism comprises four fixed blocks, a guide rod, a screw rod, two threaded blocks, two sliding sleeves, a connecting column, a bearing plate, two stand columns and two groups of fixed parts, the four fixed blocks are respectively and fixedly connected to the four corners of the inner bottom wall of the exhaust pipeline, the four fixed blocks are symmetrically arranged, the guide rod is fixedly connected between the two fixed blocks on the rear side, one end of the screw rod penetrates through the fixed block on the front side from right to left and is rotatably connected to the corresponding fixed block on the left side through a bearing, and a first filter component is arranged at an opening at the left end of the exhaust pipeline. The air exhaust device for the broadcast television transmitter room is beneficial to maintenance and overhaul of the exhaust fan through the arranged moving assembly.

Description

Air exhaust device for broadcast television transmitter room

Technical Field

The utility model relates to the field of broadcast television, in particular to the field of an exhaust device for a broadcast television transmitter room.

Background

Broadcast television is a transmission medium for broadcasting audio and video programs to a wide area through radio waves or through wires, and is called broadcast, and only broadcasts sound, namely sound broadcast; the broadcast of images and sounds is called television broadcast, and in a narrow sense, the broadcast is a broadcast which uses radio waves and wires to transmit contents only by sound, and in a broad sense, the broadcast includes what we commonly consider as a broadcast of only sound and a television in which sound and images coexist.

The computer lab of current radio and television transmitter, its inside electrical equipment is more, need use exhaust device, and current exhaust device's exhaust fan is bolt fastening usually in air pipe, when needs maintain and overhaul exhaust device, because the exhaust duct is narrower, be difficult for maintaining and overhauing the exhaust fan, thereby the exhaust fan is maintained and is overhauld the process and waste time and energy, the port department of exhaust duct is generally through bolt installation grid simultaneously, like this because the great difficult exemption of grid aperture can make the dust get into in the pipeline, staff need stand on the ladder to demolish and install the bolt on the grid simultaneously, thereby it is comparatively loaded down with trivial details to make grid dismantle and install, and there is certain potential safety hazard in view of this, we propose an exhaust device for radio and television transmitter computer lab.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an exhaust device for a broadcast television transmitter room, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides an exhaust device for broadcast television transmitter computer lab, includes exhaust duct and exhaust fan, the exhaust fan passes through moving mechanism and sets up the inner wall portion at exhaust duct, moving mechanism includes four fixed blocks, guide bar, screw rod, two screw thread pieces, two sliding sleeves, spliced pole, loading board, two stands and two sets of fixed part, four fixed block difference fixed connection is in exhaust duct's inner diapire four corners department, and four fixed blocks all are the symmetry setting, guide bar fixed connection is between two fixed blocks in the rear side, the one end of screw rod is rotated through the fixed block of front side and is connected on the corresponding fixed block in left side through the bearing from the right side to a left side, exhaust duct's left end opening part is provided with filter assembly No. one, the right-hand member opening part of exhaust duct is provided with filter assembly No. two, through the removal subassembly that sets up, the one end of screw rod is rotated and is connected at the corresponding fixed block in left side through the bearing from the right side to a left side through the fixed block that runs through the front side to a right side to a left side and rotate On the fixed block, the other end fixedly connected with carousel of screw rod, can drive the screw rod through rotating the carousel and rotate on two fixed blocks of front side, the screw rod drives two screw thread pieces on it and rotates, screw thread piece passes through the spliced pole simultaneously, the loading board, the spacing of sliding sleeve and guide bar is down, make screw thread piece remove about can, make screw thread piece drive the spliced pole and control about the loading board, and make the sliding sleeve remove about on the guide bar, thereby make the loading board drive exhaust fan on it and remove about, be favorable to the removal to the exhaust fan like this, thereby be convenient for maintain and overhaul the exhaust fan, No. one filtering component and No. two filtering components can avoid in outside dust gets into the exhaust pipe.

The utility model has the further improvement that the two thread blocks are both in threaded connection with the screw rod, the two sliding sleeves are both in sliding connection with the guide rod, the threaded blocks and the sliding sleeves are symmetrically arranged, connecting columns are fixedly connected to the middle parts of the opposite sides of the two threaded blocks and the two sliding sleeves, one sides of the four connecting columns opposite to each other are fixedly connected with the bearing plate, the two upright columns are respectively and symmetrically and fixedly connected to the right side of the upper surface of the bearing plate, the two fixing parts are respectively and symmetrically arranged at the upper ends of the opposite sides of the upright columns, the exhaust fan is fixedly arranged between the two fixing parts, set up the sliding sleeve and remove on the guide bar when the screw block removes like this, the sliding sleeve can improve the stationarity that the loading board removed with the guide bar cooperation, stand and fixed part cooperation use can be fixed the exhaust fan with a filter screen and No. two filter screen just right positions.

The utility model has the further improvement that the fixing part comprises a connecting rod and an arc-shaped plate, one end of the connecting rod is fixedly connected with the upright post, the arc-shaped plate is fixedly connected with one end of the connecting rod far away from the upright post, the arc-shaped plate is matched with the exhaust fan, and the other end of the screw rod is fixedly connected with a turntable.

The first filter assembly comprises an installation frame, a first filter frame and a first filter screen, the installation frame is fixedly installed at the left end of the exhaust pipeline through bolts, a sliding groove is formed in the middle of one end, far away from the exhaust pipeline, of the installation frame, the first filter frame is connected inside the sliding groove in a sliding mode, the first filter screen is fixedly connected to the middle of the first filter frame, a limiting groove is formed in the installation frame and located on the front side of the inner wall of the sliding groove, and a limiting mechanism is arranged on the front side of the back face of the first filter frame and in a position corresponding to the limiting groove.

The utility model is further improved in that the limiting mechanism comprises a cavity, a sliding plate, a limiting block and a return spring, the cavity is arranged on the back of the first filter frame and corresponds to the limiting groove, the sliding plate is connected inside the cavity in a sliding manner, one end of the limiting block is fixedly connected to the sliding plate, the other end of the limiting block penetrates through the cavity and extends to the outside of the first filter frame, the front side and the rear side of the extending end of the limiting block are both provided with inclined planes matched with the limiting groove, the extending end of the limiting block is connected inside the limiting groove in a sliding manner, two ends of the return spring are respectively fixedly connected with the inner wall of the cavity and one end of the sliding plate far away from the limiting block, so that when the first filter frame is pulled, the inclined planes on the limiting block are extruded by the limiting groove, the limiting block moves into the cavity and drives the sliding plate to move into the cavity, and the return spring is compressed, after the limiting block is separated from the limiting groove, the first filter frame can be taken out after the first filter frame loses limiting.

The utility model has the further improvement that the second filter assembly comprises a second filter frame and a second filter screen, the rear side of the second filter frame is hinged to the rear side of the right end of the exhaust duct, and the second filter screen is fixedly connected to the middle of the second filter frame, so that the arrangement is convenient for operating the moving assembly to maintain and overhaul the exhaust fan and cleaning the second filter screen.

Compared with the prior art, the utility model has the following beneficial effects:

1. through the removal subassembly that sets up, the one end of screw rod runs through the fixed block of front side from the right side to left side and rotates through the bearing and connect on the corresponding fixed block in left side, the other end fixedly connected with carousel of screw rod, can drive the screw rod through rotating the carousel and rotate on two fixed blocks in front side, the screw rod drives two screw thread blocks on it and rotates, the screw thread block passes through the spliced pole simultaneously, the loading board, the spacing of sliding sleeve and guide bar is down, make the screw thread block remove about can, make the screw thread block drive the spliced pole and the loading board remove about, and make the sliding sleeve remove about on the guide bar, thereby make the loading board drive the exhaust fan on it and remove about, be favorable to the removal to the exhaust fan like this, thereby be convenient for maintain and overhaul the exhaust fan.

2. Through a filtering component and stop gear cooperation use that set up, a filter screen fixed connection is in the inside of filtering the frame No. one, filter frame sliding connection in the spout on the installing frame No. one, can wash and change a filter screen through a filter frame of pull like this, the inclined plane with spacing groove looks adaptation is seted up to the front side and the rear side of stopper simultaneously, the extension end sliding connection of stopper is in the inside of spacing groove, when filtering the frame No. one, the inclined plane on the stopper receives the extrusion of spacing groove, make the stopper remove and drive the slide and remove to the cavity in to the cavity, reset spring is compressed simultaneously, No. one filter frame loses spacingly after the stopper breaks away from the spacing groove and alright take out a filter frame, avoid dismantling the bolt like this, only need the pull can, the operation is simple, avoid dangerous emergence.

Drawings

Fig. 1 is a schematic view of the overall structure of an air exhaust device for a broadcast television transmitter room according to the present invention.

Fig. 2 is a schematic top sectional view of an upper end portion of an exhaust device for a broadcast television transmitter room according to the present invention.

Fig. 3 is a schematic sectional view of the right end part of an exhaust device for a broadcast television transmitter room according to the present invention.

Fig. 4 is a schematic diagram of an explosive structure of a filter assembly of an exhaust device for a broadcast television transmitter room according to the present invention.

Fig. 5 is a schematic cross-sectional structural view of a limiting mechanism in a first filter assembly of an exhaust device for a broadcast television transmitter room according to the present invention.

In the figure: 1. an exhaust duct; 2. a first filter assembly; 201. installing a frame; 202. a chute; 203. a first filter frame; 204. a first filter screen; 205. a limiting groove; 3. a second filter assembly; 301. a second filter frame; 302. a second filter screen; 4. a fixed block; 401. a guide bar; 402. a screw; 403. a thread block; 404. connecting columns; 405. a carrier plate; 406. a column; 407. a connecting rod; 408. an arc-shaped plate; 409. an exhaust fan; 410. a turntable; 411. a sliding sleeve; 5. a cavity; 501. a slide plate; 502. a limiting block; 503. a return spring.

Detailed Description

In order to make the technical means, the original characteristics, the achieved objects and the functions of the present invention easy to understand, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or the positional relationship based on the orientation or the positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus not be construed as limiting the present invention. Furthermore, the terms "a," "an," "two," and "three" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The utility model will be further illustrated with reference to specific embodiments.

Example 1

As shown in fig. 1-5, an exhaust device for a broadcast television transmitter room comprises an exhaust duct 1 and an exhaust fan 409, wherein the exhaust fan 409 is arranged on the inner wall of the exhaust duct 1 through a moving mechanism, the moving mechanism comprises four fixing blocks 4, a guide rod 401, a screw 402, two thread blocks 403, two sliding sleeves 411, a connecting column 404, a bearing plate 405, two upright posts 406 and two sets of fixing components, the four fixing blocks 4 are respectively and fixedly connected at four corners of the inner bottom wall of the exhaust duct 1, the four fixed blocks 4 are symmetrically arranged, the guide rod 401 is fixedly connected between the two fixed blocks 4 at the rear side, one end of the screw 402 penetrates through the fixed block 4 at the front side from right to left and is rotatably connected to the corresponding fixed block 4 at the left side through a bearing, the first filtering component 2 is arranged at the opening at the left end of the exhaust pipeline 1, and the second filtering component 3 is arranged at the opening at the right end of the exhaust pipeline 1; two threaded blocks 403 are both in threaded connection with the screw 402, two sliding sleeves 411 are both in sliding connection with the guide rod 401, the threaded blocks 403 and the sliding sleeves 411 are symmetrically arranged, connecting columns 404 are fixedly connected to the middle parts of the opposite sides of the two threaded blocks 403 and the two sliding sleeves 411, the opposite sides of the four connecting columns 404 are fixedly connected with the bearing plate 405, two upright columns 406 are respectively and symmetrically and fixedly connected to the right side of the upper surface of the bearing plate 405, two fixing parts are respectively and symmetrically arranged at the upper ends of the opposite sides of the upright columns 406, and the exhaust fan 409 is fixedly arranged between the two fixing parts; the fixed part includes connecting rod 407 and arc 408, and the one end and the stand 406 fixed connection of connecting rod 407, arc 408 fixed connection are in the one end that stand 406 was kept away from to connecting rod 407, and arc 408 and exhaust fan 409 looks adaptation, the other end fixedly connected with carousel 410 of screw 402.

The embodiment can realize that: through the removal subassembly that sets up, the one end of screw rod 402 runs through the fixed block 4 of front side from the right side to the left side and rotates through the bearing and connect on the corresponding fixed block 4 in left side, the other end fixedly connected with carousel 410 of screw rod 402, can drive screw rod 402 through rotating carousel 410 and rotate on two fixed blocks 4 in front side, screw rod 402 drives two screw blocks 403 on it and rotates, screw block 403 passes through spliced pole 404 simultaneously, the loading board 405, sliding sleeve 411 and guide bar 401 spacing down, make screw block 403 can remove about, make screw block 403 drive spliced pole 404 and loading board 405 remove about, and make sliding sleeve 411 remove about on guide bar 401, thereby make loading board 405 drive exhaust fan 409 above that and remove, be favorable to the removal to exhaust fan 409 like this, thereby be convenient for maintain and overhaul exhaust fan 409.

Example 2

As shown in fig. 1-5, the exhaust duct comprises an exhaust duct 1 and an exhaust fan 409, the exhaust fan 409 is arranged at the inner wall of the exhaust duct 1 through a moving mechanism, the moving mechanism comprises four fixed blocks 4, a guide rod 401, a screw 402, two threaded blocks 403, two sliding sleeves 411, a connecting column 404, a bearing plate 405, two upright posts 406 and two groups of fixed parts, the four fixed blocks 4 are respectively and fixedly connected at four corners of the inner bottom wall of the exhaust duct 1, the four fixed blocks 4 are symmetrically arranged, the guide rod 401 is fixedly connected between the two fixed blocks 4 at the rear side, one end of the screw 402 penetrates through the fixed block 4 at the front side from right to left and is rotatably connected to the corresponding fixed block 4 at the left side through a bearing, a first filtering component 2 is arranged at the opening at the left end of the exhaust duct 1, and a second filtering component 3 is arranged at the opening at the right end of the exhaust duct 1; two threaded blocks 403 are both in threaded connection with the screw 402, two sliding sleeves 411 are both in sliding connection with the guide rod 401, the threaded blocks 403 and the sliding sleeves 411 are symmetrically arranged, connecting columns 404 are fixedly connected to the middle parts of the opposite sides of the two threaded blocks 403 and the two sliding sleeves 411, the opposite sides of the four connecting columns 404 are fixedly connected with the bearing plate 405, two upright columns 406 are respectively and symmetrically and fixedly connected to the right side of the upper surface of the bearing plate 405, two fixing parts are respectively and symmetrically arranged at the upper ends of the opposite sides of the upright columns 406, and the exhaust fan 409 is fixedly arranged between the two fixing parts; the fixing part comprises a connecting rod 407 and an arc-shaped plate 408, one end of the connecting rod 407 is fixedly connected with the upright post 406, the arc-shaped plate 408 is fixedly connected with one end of the connecting rod 407 far away from the upright post 406, the arc-shaped plate 408 is matched with the exhaust fan 409, and the other end of the screw 402 is fixedly connected with a turntable 410; the first filter assembly 2 comprises an installation frame 201, a first filter frame 203 and a first filter screen 204, the installation frame 201 is fixedly installed at the left end of the exhaust pipeline 1 through bolts, a sliding groove 202 is formed in the middle of one end, far away from the exhaust pipeline 1, of the installation frame 201, the first filter frame 203 is connected inside the sliding groove 202 in a sliding mode, the first filter screen 204 is fixedly connected to the middle of the first filter frame 203, a limiting groove 205 is formed in the installation frame 201 and located on the front side of the inner wall of the sliding groove 202, and a limiting mechanism is arranged on the front side of the back face of the first filter frame 203 and in a position corresponding to the limiting groove 205; the limiting mechanism comprises a cavity 5, a sliding plate 501, a limiting block 502 and a reset spring 503, the cavity 5 is arranged on the back of the first filter frame 203 and corresponds to the limiting groove 205, the sliding plate 501 is connected inside the cavity 5 in a sliding manner, one end of the limiting block 502 is fixedly connected to the sliding plate 501, the other end of the limiting block 502 penetrates through the cavity 5 and extends to the outside of the first filter frame 203, inclined planes matched with the limiting groove 205 are arranged on the front side and the rear side of the extending end of the limiting block 502, the extending end of the limiting block 502 is connected inside the limiting groove 205 in a sliding manner, and two ends of the reset spring 503 are fixedly connected with the inner wall of the cavity 5 and one end of the sliding plate 501, which is far away from the limiting block 502, respectively; no. two filter assembly 3 includes No. two filter frame 301 and No. two filter screens 302, and the rear side of No. two filter frame 301 articulates the right-hand member rear side at exhaust duct 1, and No. two filter screens 302 fixed connection is in the middle part of No. two filter frame 301.

The embodiment can realize that: through the matching use of the first filter component 2 and the limiting mechanism, the first filter screen 204 is fixedly connected inside the first filter frame 203, the first filter frame 203 is connected in the sliding groove 202 of the mounting frame 201 in a sliding manner, so that the first filter screen 204 can be cleaned and replaced by pulling the first filter frame 203, meanwhile, the front side and the rear side of the limiting block 502 are provided with inclined planes matched with the limiting groove 205, the extending end of the limiting block 502 is connected in the limiting groove 205 in a sliding manner, when the first filter frame 203 is pulled, the inclined planes on the limiting block 502 are extruded by the limiting groove 205, so that the limiting block 502 moves in the cavity 5 and drives the sliding plate 501 to move in the cavity 5, meanwhile, the reset spring 503 is compressed, the limiting block 502 is separated from the limiting groove 205, the first filter frame 203 can be taken out after the first filter frame 203 loses the limiting position, the first filter screen 204 is cleaned, thus the disassembly of the bolt is avoided, only need the pull can, easy operation avoids dangerous emergence.

It should be noted that, the utility model is an exhaust device for a broadcast television transmitter room, when an exhaust fan 409 needs to be maintained and overhauled, the second filter frame 301 at the right end of an exhaust pipeline 1 is opened, then the rotary table 410 is rotated anticlockwise, the rotary table 410 drives two screw blocks 403 on the rotary table to move rightwards, simultaneously the screw blocks 403 drive the bearing plate 405 to move rightwards through the connecting column 404 at the front side, the bearing plate 405 drives the sliding sleeve 411 to move rightwards on the guide rod 401 through the connecting column 404 at the rear side, so that the bearing plate 405 drives the two upright posts 406, the two fixing parts and the exhaust fan 409 to move rightwards until the screw blocks 403 are contacted with the fixing block 4 at the right side, at this moment, the exhaust fan 409 moves to the right end of the exhaust pipeline 1, a worker can maintain and overhaul the exhaust fan 409, after the maintenance and the overhaul are finished, the rotary table 410 is rotated along the pointer to make the flow move reversely, until the exhaust fan 409 is moved to a proper position; when a first filter screen 204 on a first filter assembly 2 is cleaned and replaced, the first filter frame 203 is pulled to the front, meanwhile, the inclined surface of the limiting block 502 is extruded by the limiting groove 205, the limiting block 502 moves towards the cavity 5 and drives the sliding plate 501 to move towards the cavity 5, meanwhile, the return spring 503 is compressed by the sliding plate 501, after the limiting block 502 is separated from the limiting groove 205, the first filter frame 203 loses the limiting position, the limiting block 502 enables the extending end of the limiting block 502 to be always contacted with the inner wall of the sliding groove 202 on the mounting frame 201 under the action of the return spring 503, until the first filter frame 203 is taken out, the limiting block 502 loses the inner wall limiting position of the sliding groove 202 on the mounting frame 201, the sliding plate 503 resets under the action of the return spring 503, meanwhile, the sliding plate 501 drives the limiting block 502 to reset, so that the inclined surface on the limiting block 502 is exposed out of the first filter frame 203, after being cleaned, the first filter is inserted into the sliding groove 202 at one end of the first filter frame 203 and pushed backwards, the first filter frame 203 is enabled to move in the sliding groove 202, when the inclined surface of the limiting block 502 is in contact with the mounting frame 201 and is squeezed, the limiting block 502 moves in the cavity 5 until the limiting block 502 moves to the limiting groove 205, the limiting block 502 enters the limiting groove 205 under the action of the reset spring 503, the limiting block 502 is enabled to be limited, and therefore the first filter frame 203 is enabled to be fixed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an exhaust device for broadcast television transmitter computer lab, includes exhaust duct (1) and exhaust fan (409), its characterized in that: the exhaust fan (409) is arranged on the inner wall part of the exhaust pipeline (1) through a moving mechanism, the moving mechanism comprises four fixed blocks (4), a guide rod (401), a screw rod (402), two thread blocks (403), two sliding sleeves (411), a connecting column (404), a bearing plate (405), two upright posts (406) and two groups of fixed parts, the four fixed blocks (4) are respectively and fixedly connected with four corners of the inner bottom wall of the exhaust duct (1), and the four fixed blocks (4) are symmetrically arranged, the guide rod (401) is fixedly connected between the two fixed blocks (4) at the rear side, one end of the screw rod (402) penetrates through the fixed block (4) at the front side from right to left and is rotatably connected to the fixed block (4) corresponding to the left side through a bearing, a first filtering component (2) is arranged at the opening at the left end of the exhaust pipeline (1), and a second filtering component (3) is arranged at the right end opening of the exhaust pipeline (1).

2. The exhaust device for the broadcasting television transmitter room according to claim 1, characterized in that: two equal threaded connection of screw block (403) is on screw rod (402), two equal sliding connection of sliding sleeve (411) is on guide bar (401), screw block (403) is the symmetry setting with sliding sleeve (411), two equal fixedly connected with spliced pole (404), four in one side middle part that screw block (403) and two sliding sleeves (411) are relative one side and loading board (405) fixed connection, two the upper surface right side of symmetry fixed connection respectively at loading board (405) is fixed part symmetry setting respectively in one side upper end that upright (406) is relative, exhaust fan (409) fixed mounting is between two fixed part.

3. The exhaust device for the broadcasting television transmitter room according to claim 1, characterized in that: the fixed part comprises a connecting rod (407) and an arc-shaped plate (408), one end of the connecting rod (407) is fixedly connected with the upright post (406), the arc-shaped plate (408) is fixedly connected with one end, far away from the upright post (406), of the connecting rod (407), the arc-shaped plate (408) is matched with the exhaust fan (409), and the other end of the screw rod (402) is fixedly connected with a turntable (410).

4. The exhaust device for the broadcasting television transmitter room according to claim 1, characterized in that: a filtering component (2) includes installing frame (201), a filter frame (203) and filter screen (204), installing frame (201) is through bolt fixed mounting at the left end of exhaust pipe (1), spout (202) have been seted up at the one end middle part that exhaust pipe (1) was kept away from in installing frame (201), a filter frame (203) sliding connection is in the inside of spout (202), a filter screen (204) fixed connection is at the middle part of a filter frame (203), the inner wall front side that just is located spout (202) on installing frame (201) is seted up and is equipped with spacing groove (205), a back front side of filtering frame (203) and the position corresponding with spacing groove (205) are provided with stop gear.

5. The exhaust device for the broadcasting television transmitter room according to claim 4, wherein: the limiting mechanism comprises a cavity (5), a sliding plate (501), a limiting block (502) and a return spring (503), the cavity (5) is arranged on the back surface of the first filter frame (203) and corresponds to the limit groove (205), the sliding plate (501) is connected inside the cavity (5) in a sliding way, one end of the limiting block (502) is fixedly connected on the sliding plate (501), the other end of the limiting block (502) penetrates through the cavity (5) and extends to the outside of the first filter frame (203), the front side and the rear side of the extending end of the limiting block (502) are both provided with inclined planes matched with the limiting groove (205), the extending end of the limiting block (502) is connected inside the limiting groove (205) in a sliding way, two ends of the reset spring (503) are respectively fixedly connected with the inner wall of the cavity (5) and one end of the sliding plate (501) far away from the limiting block (502).

6. The exhaust device for the broadcasting television transmitter room according to claim 1, characterized in that: no. two filtering component (3) are including No. two filter frame (301) and No. two filter screens (302), the rear side of No. two filter frame (301) articulates the right-hand member rear side at exhaust duct (1), No. two filter screen (302) fixed connection are at the middle part of No. two filter frame (301).