Portable electric cable well fan with toxic gas detection function

Abstract

The application relates to the technical field of air exhaust machines, in particular to a portable electric cable well air exhaust machine with toxic gas detection function, which comprises a bottom plate, an outer shell fixedly arranged on the bottom plate, a motor fixedly arranged on one end of the outer shell, and two mutually parallel supporting plates fixedly arranged on the bottom plate. When the device is used, the device is first fixed at a suitable position, then the motor is started by the staff, the air suction fan blade fixed on the output end of the motor is rotated, the harmful gas is extracted, the harmful gas is detected through the detection device in the device, the shaft body is driven to rotate by the motor, the guide pipe is driven to move up and down through the arc-shaped groove in the process of rotation of the shaft body, the arc-shaped plate is driven to move up and down, and the up-and-down movement can be cleaned in time through the scraper and the screening plate, so that the normal use of the device is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air exhaust fans, in particular to a portable electric cable well air exhaust fan with toxic gas detection function. BACKGROUND

[0002] In narrow spaces such as cable wells and small tunnels, a large amount of toxic and harmful gases such as ammonia, carbon monoxide, sulfur dioxide, and methane will accumulate in the space due to the relatively closed state for a long time. If manual entry is required for cable detection, equipment maintenance, and other construction operations, harmful gases will cause harm to the human body, and even cause personnel to faint. Therefore, before entering a narrow space such as a cable well, ventilation treatment needs to be performed first, and then harmful gas detection is performed. After reaching the gas standard, entry for construction can be performed. The traditional ventilation method mainly includes natural ventilation and ventilation using a blower. Natural ventilation is to open the well cover and allow the cable well to breathe freely. This method requires a long ventilation time.

[0003] A new centrifugal smoke exhaust fan is disclosed in CN208966641U, which includes a volute casing and an impeller arranged in the volute casing. A plurality of filter plates are arranged at the air outlet position of the volute casing, and the filter plates are combined into a filter plane. Each filter plate is connected to the volute casing through a corresponding insertion slot. The new centrifugal smoke exhaust fan can effectively filter impurities by arranging filter plates. The filter plates are in a multi-piece splicing structure, so that users can replace or clean the filter plates according to the use condition, avoiding the problem of replacing the entire filter plate each time, improving the utilization efficiency of the filter plate, and greatly reducing the maintenance cost of the fan.

[0004] However, during use, the suction force generated by the air exhaust fan can suck in debris, and the mis-sucked debris can easily wrap around the blades of the fan, affecting use. SUMMARY

[0005] Based on the above problems in the prior art, the present application solves the problem that, during use, the suction force generated by the air exhaust fan can suck in debris, and the mis-sucked debris can easily wrap around the blades of the fan, affecting use.

[0006] The technical solution adopted by the present application to solve the technical problems is a portable electric cable well air exhaust fan with toxic gas detection function, which includes a bottom plate, an outer shell fixedly arranged on the bottom plate, a motor fixedly arranged on one end of the outer shell, two parallel support plates fixedly arranged on the bottom plate, one of the support plates being fixedly connected with the motor, a sleeve two fixedly arranged on the other support plate, a connecting cylinder fixedly arranged on the sleeve two, and a ventilation pipe fixedly arranged on the connecting cylinder.

[0007] The output end of the motor is fixedly provided with a suction fan blade, the axis of the suction fan blade is fixedly provided with a shaft body, the shaft body is fixedly provided with a rotating shaft, the outer circumferential surface of the rotating shaft is provided with a ring, the ring is fixedly provided with a scraper two, and the scraper two is attached to the inner wall of the sleeve two.

[0008] Preferably, four mutually parallel support columns are fixedly arranged on the bottom plate, and each of the support columns is uniformly distributed at a corner of the bottom plate, and an anti-skid plate is fixedly arranged at the bottom end of each of the support columns.

[0009] Preferably, a discharge port is formed in the outer wall of the shell, a screening plate is fixedly arranged in the shell, a sleeve one is fixedly arranged on the screening plate, and the sleeve one and the shaft body are coaxially arranged, the other end of the discharge port is in communication with the sleeve one, and a cleaning mechanism for removing impurities deposited in the sleeve one is slidably arranged on the shaft body.

[0010] Preferably, the cleaning mechanism comprises an arc-shaped plate slidably arranged in the sleeve one, an arc-shaped groove is formed in the outer circumferential surface of the shaft body, and a guide pipe is fixedly arranged on the arc-shaped plate and slidably connected with the arc-shaped groove.

[0011] Preferably, a plurality of mutually parallel screening holes are formed in the screening plate, a cylinder is fixedly arranged on the arc-shaped plate, and a scraper one is fixedly arranged on the cylinder.

[0012] Preferably, the arc-shaped plate is arranged in a semicircular shape, and the two arc-shaped plates in the sleeve one are arranged in a mirror image, when one of the arc-shaped plates is located at the lowest end of the arc-shaped groove, the other arc-shaped plate is located at the highest end of the arc-shaped groove, and the length of the cylinder is not less than the depth of the screening hole.

[0013] Preferably, a sliding block is slidably arranged on the outer circumferential surface of the rotating shaft, a spring is fixedly arranged between the sliding block and the ring, a plurality of mutually parallel support frames one are fixedly arranged on the outer circumferential surface of the sliding block, a connecting strip is rotatably arranged between two of the support frames one, a moving plate is slidably arranged on the long plate, and the moving plate is rotatably connected with the connecting strip.

[0014] Preferably, a fixed plate is fixedly arranged on the moving plate, two mutually parallel support frames two are fixedly arranged on the fixed plate, a connecting shaft is rotatably arranged between the two support frames two, and the connecting shaft is rotatably connected with the connecting strip.

[0015] Preferably, the connecting cylinder is funnel-shaped with one end smaller than the other end.

[0016] Preferably, each of the scrapers two is arranged in an inclined manner.

[0017] The beneficial effects of the present application are: the portable electric cable well air extractor with toxic gas detection function provided by the present application, through the support column arranged on the bottom plate and the anti-skid plate arranged on the support column, realizes that the staff first fixes the device at a suitable position when using the device, then starts the motor by the staff, and makes the air suction fan blade fixed on the output end of the motor rotate, so as to realize the extraction of harmful gas and detection by the detection device inside the device, and the motor drives the shaft body to rotate, and the guide pipe moves up and down in the process of rotating the shaft body, so as to realize driving the arc-shaped plate to move up and down, and the up and down movement can be cleaned in time by the scraper and the screening plate to ensure the normal use of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the shell of the present application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 3 It is a schematic diagram of the side view structure of the present application;

[0021] Figure 4 It is a schematic diagram of the internal structure of the sleeve one of the present application;

[0022] Figure 5 It is a schematic diagram of the Figure 4 enlarged structure of A in the present application;

[0023] Figure 6 It is a schematic diagram of the arc-shaped plate structure of the present application;

[0024] Figure 7 It is a schematic diagram of the internal structure of the sleeve two of the present application;

[0025] Figure 8 It is a schematic diagram of the local structure of the present application.

[0026] In the figure: 1, bottom plate; 11, support column; 12, anti-skid plate; 2, shell; 21, discharge port; 22, motor; 23, support plate; 24, connecting plate; 25, air suction fan blade; 26, shaft body; 261, arc-shaped groove; 27, screening plate; 271, screening hole; 28, sleeve one; 29, sleeve two; 3, connecting cylinder; 31, ventilation pipe; 4, arc-shaped plate; 41, guide pipe; 42, cylinder; 43, scraper one; 5, rotating shaft; 51, ring; 52, long plate; 53, scraper two; 54, sliding block; 541, support one; 5411, connecting strip; 55, spring; 6, moving plate; 61, fixed plate; 62, support two; 63, connecting shaft. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0029] With reference to Figures 1-3 A portable electric cable well air extractor with toxic gas detection function, comprising a bottom plate 1, a shell 2 is fixedly arranged on the bottom plate 1, a motor 22 is fixedly arranged on one end of the shell 2, two parallel support plates 23 are fixedly arranged on the bottom plate 1, one of the support plates 23 is fixedly connected with the motor 22, a sleeve 29 is fixedly arranged on the other support plate 23, a connecting cylinder 3 is fixedly arranged on the sleeve 29, and a ventilation pipe 31 is fixedly arranged on the connecting cylinder 3.

[0030] A suction fan blade 25 is fixedly arranged on the output end of the motor 22, a shaft body 26 is fixedly arranged at the shaft center of the suction fan blade 25, a connecting plate 24 is fixedly arranged on the output end of the motor 22, a rotating shaft 5 is fixedly arranged on the shaft body 26, a circular ring 51 is arranged on the outer circumferential surface of the rotating shaft 5, a scraper 53 is fixedly arranged on the circular ring 51, and the scraper 53 is in close contact with the inner wall of the sleeve 29.

[0031] With reference to Figures 2-4 Four parallel support columns 11 are fixedly arranged on the bottom plate 1, and each support column 11 is evenly distributed at the corner of the bottom plate 1. A non-slip plate 12 is fixedly arranged on the bottom end of each support column 11. By arranging the support column 11 on the bottom plate 1, the supporting function of the whole device is realized. By arranging each support column 11 at the corner of the bottom plate 1, the stress of each support column 11 can be evenly distributed during the supporting process, so that damage of the support column 11 due to uneven stress during the supporting process can be avoided. The non-slip plate 12 arranged at the bottom end of the support column 11 can increase the friction between the device and the ground, so that the device will not slip during use.

[0032] With reference to Figures 3-5The outer wall of the shell 2 is provided with a discharge port 21, a screening plate 27 is fixedly arranged in the shell 2, a sleeve 28 is fixedly arranged on the screening plate 27, and the sleeve 28 is coaxially arranged between the shaft body 26, the other end of the discharge port 21 is communicated with the sleeve 28, and the shaft body 26 is slidably provided with a cleaning mechanism for removing impurities deposited in the sleeve 28. The discharge port 21 arranged on the outer wall of the shell 2 can discharge the impurities generated during the operation of the device, so that the impurities are not accumulated in the device and affect the working efficiency of the device.

[0033] Referring to Figures 4-6 The cleaning mechanism comprises an arc-shaped plate 4 slidably arranged in the sleeve 28, an arc-shaped groove 261 is formed in the outer circumferential surface of the shaft body 26, and a guide pipe 41 is fixedly arranged on the arc-shaped plate 4 and slidably connected with the arc-shaped groove 261. The arc-shaped plate 4 arranged in the sleeve 28 can drive the guide pipe 41 to move up and down through the arc-shaped groove 261 on the outer circumferential surface of the shaft body 26 during the rotation of the shaft body 26, so as to control the up-and-down movement of the arc-shaped plate 4.

[0034] Referring to Figures 4-6 A plurality of screening holes 271 parallel to each other are formed in the screening plate 27, a cylindrical body 42 is fixedly arranged on the arc-shaped plate 4, and a scraper 43 is fixedly arranged on the cylindrical body 42. The screening holes 271 arranged on the screening plate 27 ensure the circulation of air flow in the device.

[0035] Referring to Figures 6-8 The arc-shaped plate 4 is arranged in a semicircular shape, and the two arc-shaped plates 4 in the sleeve 28 are arranged in a mirror image. When one arc-shaped plate 4 is located at the lowest end of the arc-shaped groove 261, the other arc-shaped plate 4 is located at the highest end of the arc-shaped groove 261, and the length of the cylindrical body 42 is not less than the depth of the screening hole 271. By arranging the arc-shaped plate 4 in a semicircular shape, the arc-shaped plate 4 slidably arranged on the arc-shaped groove 261 can move up and down during the rotation of the shaft body 26, so as to clean the screening holes 271 in the screening plate 27.

[0036] Referring to Figures 6-8 A sliding block 54 is slidably arranged on the outer circumferential surface of the rotating shaft 5, a spring 55 is fixedly arranged between the sliding block 54 and the circular ring 51, a plurality of supports 541 parallel to each other are fixedly arranged on the outer circumferential surface of the sliding block 54, and a connecting strip 5411 is rotatably arranged between the two supports 541. A moving plate 6 is slidably arranged on the long plate 52 and is rotatably connected with the connecting strip 5411. By arranging the sliding block 54 on the rotating shaft 5 and the connecting strip 5411 on the sliding block 54, the centrifugal force generated by the rotating shaft 5 can drive the moving plate 6 to move during the rotation of the rotating shaft 5, so as to facilitate the inclination of the connecting strip 5411 and the scattering of impurities at the edge of the connecting strip 5411.

[0037] With reference to Figures 7-8 , the mobile plate 6 is fixedly provided with a fixed plate 61, and two mutually parallel supports two 62 are fixedly arranged on the fixed plate 61. The connecting shaft 63 is rotatably arranged between the two supports two 62, and the connecting shaft 63 is rotatably connected with the connecting strip 5411. By arranging the fixed plate 61 on the mobile plate 6, the rotatable connection between the connecting strip 5411 and the mobile plate 6 is realized.

[0038] With reference to Figures 1-3 , the connecting barrel 3 is funnel-shaped with one end being small and the other end being large. By arranging the connecting barrel 3 in a funnel shape, the airflow in the ventilation pipe 31 can enter the inside of the device through the connecting barrel 3.

[0039] With reference to Figures 5-7 , each scraper two 53 is arranged obliquely, and the obliquely arranged scraper two 53 can clean the inside of the sleeve two 29.

[0040] The specific scheme is: when the staff uses the device, first fix the device in a suitable position, through the support column 11 arranged on the bottom plate 1, the supporting function of the whole device is realized, and at the same time, each support column 11 is arranged at the corner of the bottom plate 1, so that each support column 11 can bear force evenly during the supporting process, avoiding the damage caused by uneven force during the supporting process of the support column 11, and at the same time, the anti-skid plate 12 arranged at the bottom end of the support column 11 can increase the friction between the device and the ground, avoiding the slipping of the device during use, through the discharge port 21 arranged on the outer wall of the shell 2, the impurities generated during the operation of the device can be discharged through the discharge port 21, avoiding the accumulation of impurities in the inside of the device, affecting the working efficiency of the device, through the arc-shaped plate 4 arranged in the sleeve one 28, in the process of rotating the shaft body 26, the arc-shaped groove 261 on the outer circumferential surface drives the guide pipe 41 to move up and down, so as to control the up and down movement of the arc-shaped plate 4, the arc-shaped plate 4 is arranged in a semicircle, so that in the process of rotating the shaft body 26, the arc-shaped plate 4 arranged in the arc-shaped groove 261 can move up and down, so as to clean the screening holes 271 in the screening plate 27, through the sliding block 54 arranged on the rotating shaft 5 and the connecting strip 5411 arranged on the sliding block 54, in the process of rotating the rotating shaft 5, the centrifugal force generated by the rotating shaft 5 can drive the mobile plate 6 to move, so as to facilitate the inclination angle of the connecting strip 5411 to scatter impurities at the edge of the connecting strip 5411.

[0041] Those skilled in the art should understand: the discussion of the above any embodiment is only exemplary, and the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the application as described above. In order to be brief, they are not provided in details.

[0042] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any one of the above-described and other features can be employed in any feasible combination, permutation, or sub-combination, without departing from the spirit and scope of the application.

Claims

1. A portable electric cable well exhaust fan with toxic gas detection function, comprising a base plate (1), characterized in that... It also includes a housing (2) fixedly installed on the base plate (1), a motor (22) fixedly installed on one end of the housing (2), two parallel support plates (23) fixedly installed on the base plate (1), one of the support plates (23) being fixedly connected to the motor (22), and a sleeve (29) fixedly installed on the other support plate (23), a connecting cylinder (3) fixedly installed on the sleeve (29), and a ventilation pipe (31) fixedly installed on the connecting cylinder (3). A suction fan blade (25) is fixedly installed on the output end of the motor (22). A shaft body (26) is fixedly installed at the center of the suction fan blade (25). A connecting plate (24) is fixedly installed on the output end of the motor (22). A rotating shaft (5) is fixedly installed on the shaft body (26). A ring (51) is provided on the outer circumference of the rotating shaft (5). A long plate (52) is fixedly installed on the ring (51). A scraper (53) is fixedly installed on the ring (51), and the scraper (53) is in contact with the inner wall of the sleeve (29). The outer wall of the outer shell (2) is provided with a discharge port (21), a screening plate (27) is fixedly installed inside the outer shell (2), a sleeve (28) is fixedly installed on the screening plate (27), and the sleeve (28) is coaxially installed with the shaft (26). The other end of the discharge port (21) is connected to the sleeve (28), and a cleaning mechanism for removing impurities deposited inside the sleeve (28) is slidably installed on the shaft (26). The cleaning mechanism includes an arc plate (4) that is slidably disposed in the sleeve (28), an arc groove (261) is provided on the outer circumferential surface of the shaft (26), and a guide tube (41) that is slidably connected to the arc groove (261) is fixedly disposed on the arc plate (4). The screening plate (27) has a plurality of parallel screening holes (271), and a cylinder (42) is fixedly installed on the arc plate (4), and a scraper (43) is fixedly installed on the cylinder (42). The arc plate (4) is semi-circular, and the two arc plates (4) inside the sleeve (28) are mirror images of each other. When one arc plate (4) is located at the lowest end of the arc groove (261), the other arc plate (4) is located at the highest end of the arc groove (261), and the length of the cylinder (42) is not less than the depth of the screening hole (271).

2. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that, Four parallel support columns (11) are fixedly installed on the base plate (1), and each support column (11) is evenly distributed at the corner of the base plate (1). Each support column (11) is fixedly installed with an anti-slip plate (12) at its bottom end.

3. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that, A slider (54) is slidably disposed on the outer circumferential surface of the rotating shaft (5). A spring (55) is fixedly disposed between the slider (54) and the ring (51). A plurality of parallel brackets (541) are fixedly disposed on the outer circumferential surface of the slider (54), and a connecting strip (5411) is rotatably disposed between two brackets (541). A movable plate (6) is slidably disposed on the long plate (52), and the movable plate (6) is rotatably connected to the connecting strip (5411).

4. A portable electric cable well exhaust fan with toxic gas detection function according to claim 3, characterized in that, A fixed plate (61) is fixedly installed on the movable plate (6), and two parallel brackets (62) are fixedly installed on the fixed plate (61). A connecting shaft (63) is rotatably installed between the two brackets (62), and the connecting shaft (63) is rotatably connected to the connecting strip (5411).

5. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that, The connecting cylinder (3) is arranged in a funnel shape with one end smaller than the other.

6. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that, Each of the scraper blades (53) is arranged at an angle.

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