Portable electric cable well exhaust fan with toxic gas detection function

Abstract

The invention relates to the technical field of exhaust fans, in particular to a portable electric cable well exhaust fan with a toxic gas detection function, which comprises a bottom plate, a shell is fixedly arranged on the bottom plate, a motor is fixedly arranged at one end of the shell, two mutually parallel support plates are fixedly arranged on the bottom plate, and the support plates are fixedly arranged on the bottom plate. When a worker uses the device, the device is firstly fixed at a proper position, then the worker starts a motor and enables suction fan blades fixed to the output end of the motor to rotate, so that harmful gas is extracted and detected through a detection device in the device, and the motor drives a shaft body to rotate, so that the detection efficiency is improved. And in the rotating process of the shaft body, a guide pipe can be driven to move up and down through an arc-shaped groove, so that an arc-shaped plate is driven to move up and down, and the screening plate can be cleaned in time through a first scraping plate when moving up and down, so that normal use of the device is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust fans, and in particular to a portable electric cable well exhaust fan with a toxic gas detection function. Background Art

[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 being in a relatively closed state for a long time. If manual entry is required for cable inspection, equipment maintenance, and other construction operations, the harmful gases will cause damage to the human body and even cause personnel to become comatose. Therefore, ventilation must be carried out before entering narrow spaces such as cable wells, and then harmful gas detection must be carried out. Only after the gas standards are met can entry be carried out for construction. Traditional ventilation methods are mainly natural ventilation and ventilation using blowers. Natural ventilation is to open the manhole cover to allow the cable well to ventilate freely. This method requires a long ventilation time.

[0003] After searching, CN208966641U has been published, which discloses a new type of centrifugal smoke exhaust fan, which includes a volute casing and an impeller arranged in the volute casing, wherein a plurality of filter plates are arranged at the air outlet of the volute casing, and a filter plane is formed by the plurality of filter plates, wherein the volute casing is provided with a slot corresponding to each filter plate, and the filter plate is connected to the volute casing through the corresponding slot. The new type of centrifugal smoke exhaust fan can effectively filter impurities by setting the filter plate, and the filter plate of the centrifugal smoke exhaust fan is a multi-piece splicing structure, so that the user can carry out targeted replacement or cleaning according to the use of the filter plate, avoiding the problem that the filter plate needs to be replaced as a whole each time it is replaced, 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 exhaust fan can suck in debris, and the debris that is accidentally sucked in can easily get entangled in the blades of the fan, affecting its use. Summary of the invention

[0005] Based on the above problems existing in the prior art, the problem to be solved by the present application is: However, during use, the suction force generated by the exhaust fan can suck in debris, and the debris accidentally sucked in can easily be entangled on the blades of the fan blades, affecting use.

[0006] The technical solution adopted by the present application to solve the technical problem is: a portable electric cable well exhaust fan with a toxic gas detection function, comprising a bottom plate, a shell is fixedly arranged on the bottom plate, a motor is fixedly arranged on one end of the shell, two mutually parallel support plates are fixedly arranged on the bottom plate, one of the support plates is fixedly connected to the motor, a sleeve 2 is fixedly arranged on the other support plate, a connecting cylinder is fixedly arranged on the sleeve 2, and a ventilation pipe is fixedly arranged on the connecting cylinder; A suction fan blade is fixedly arranged on the output end of the motor, a shaft body is fixedly arranged at the axis center of the suction fan blade, a rotating shaft is fixedly arranged on the shaft body, a circular ring is transferred on the outer circumference of the rotating shaft, a scraper 2 is fixedly arranged on the circular ring, and the scraper 2 is in contact with the inner wall of the sleeve 2.

[0007] Preferably, four mutually parallel support columns are fixedly arranged on the bottom plate, and each of the support columns is evenly distributed at the corners of the bottom plate, and an anti-skid plate is fixedly arranged on the bottom end of each of the support columns.

[0008] Preferably, a discharge port is provided on the outer wall of the outer shell, a screening plate is fixedly provided inside the outer shell, a sleeve 1 is fixedly provided on the screening plate, and the sleeve 1 is coaxially provided with the shaft body, the other end of the discharge port is communicated with the sleeve 1, and a cleaning mechanism for removing impurities deposited inside the sleeve 1 is slidably provided on the shaft body.

[0009] Preferably, the cleaning mechanism comprises an arc-shaped plate slidably arranged in the sleeve, an arc-shaped groove is provided on the outer peripheral surface of the shaft body, and a guide tube slidably connected to the arc-shaped groove is fixedly arranged on the arc-shaped plate.

[0010] Preferably, the screening plate is provided with a plurality of screening holes parallel to each other, a cylinder is fixedly provided on the arc-shaped plate, and a scraper 1 is fixedly provided on the cylinder.

[0011] Preferably, the arc plate is arranged in a semicircular shape, and the two arc plates in the sleeve are arranged in a mirror image, when one arc plate is located at the lowest end of the arc groove, the other arc plate is located at the highest end of the arc groove, and the length of the cylinder is not less than the depth of the screening hole.

[0012] Preferably, a slider is slidably arranged on the outer circumferential surface of the rotating shaft, a spring is fixedly arranged between the slider and the circular ring, a plurality of brackets 1 are fixedly arranged on the outer circumferential surface of the slider, and a connecting strip is rotatably arranged between two of the brackets 1, a movable plate is slidably arranged on the long plate, and the movable plate is rotatably connected to the connecting strip.

[0013] Preferably, a fixed plate is fixedly arranged on the movable plate, two brackets 2 which are parallel to each other are fixedly arranged on the fixed plate, a connecting shaft is rotatably arranged between the two brackets 2, and the connecting shaft is rotatably connected to the connecting bar.

[0014] Preferably, the connecting tube is arranged in a funnel shape with one end being small and the other end being large.

[0015] Preferably, each of the scrapers 2 is arranged at an angle.

[0016] The beneficial effects of the present application are as follows: the present application provides a portable electric cable well exhaust fan with a toxic gas detection function, which is realized by a support column arranged on the bottom plate and an anti-skid plate arranged on the support column, so that when the staff uses the device, they first fix the device in a suitable position, and then start the motor, and rotate the suction fan blades fixed on the output end of the motor, thereby realizing the extraction of harmful gases and then detecting them through the detection device inside the device, and the motor drives the shaft to rotate, and during the rotation of the shaft, the guide tube can be driven up and down through the arc groove, thereby driving the arc plate to move up and down, and the up and down movement can be immediately cleaned by a pair of scrapers and screening plates to ensure the normal use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the internal structure of a sleeve of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the curved plate structure of the present invention; Figure 7 It is a schematic diagram of the internal structure of the sleeve 2 of the present invention; Figure 8 It is a schematic diagram of the local structure of the present invention.

[0018] 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. suction fan blade; 26. shaft; 261. arc groove; 27. screening plate; 271. screening hole; 28. sleeve one; 29. ​​sleeve two; 3. connecting cylinder; 31. ventilation pipe; 4. arc plate; 41. guide tube; 42. cylinder; 43. scraper one; 5. rotating shaft; 51. ring; 52. long plate; 53. scraper two; 54. slider; 541. bracket one; 5411. connecting strip; 55. spring; 6. movable plate; 61. fixed plate; 62. bracket two; 63. connecting shaft. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] Reference Figure 1-Figure 3 A portable electric cable well exhaust fan with a toxic gas detection function comprises 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 supporting plates 23 parallel to each other are fixedly arranged on the bottom plate 1, one of the supporting plates 23 is fixedly connected to the motor 22, a sleeve 29 is fixedly arranged on the other supporting plate 23, a connecting tube 3 is fixedly arranged on the sleeve 29, and a ventilation pipe 31 is fixedly arranged on the connecting tube 3; A suction fan blade 25 is fixedly provided on the output end of the motor 22, a shaft body 26 is fixedly provided at the axis center of the suction fan blade 25, a connecting plate 24 is fixedly provided on the output end of the motor 22, a rotating shaft 5 is fixedly provided on the shaft body 26, a circular ring 51 is transferred to the outer circumference of the rotating shaft 5, a scraper 2 53 is fixedly provided on the circular ring 51, and the scraper 2 53 is in contact with the inner wall of the sleeve 29.

[0022] Reference Figure 2-Figure 4 Four mutually parallel support columns 11 are fixedly arranged on the base plate 1, and each support column 11 is evenly distributed at the corners of the base plate 1. An anti-skid plate 12 is fixedly arranged on the bottom end of each support column 11. By arranging the support columns 11 on the base plate 1, the support function of the entire device is realized. At the same time, each support column 11 is arranged at the corner of the base plate 1 so that each support column 11 can be evenly stressed during the support process, thereby avoiding damage to the support column 11 due to uneven stress during the support process. At the same time, the anti-skid plate 12 arranged on the bottom end of the support column 11 can increase the friction between the device and the ground, thereby avoiding the device from slipping during use.

[0023] Reference Figure 3-Figure 5 A discharge port 21 is provided on the outer wall of the shell 2, a screening plate 27 is fixedly arranged inside the shell 2, a sleeve 28 is fixedly arranged on the screening plate 27, and the sleeve 28 is coaxially arranged with the shaft 26, the other end of the discharge port 21 is communicated with the sleeve 28, and a cleaning mechanism for removing impurities deposited inside the sleeve 28 is slidably arranged on the shaft 26, and the discharge port 21 arranged on the outer wall of the shell 2 is used to discharge impurities generated during the operation of the device through the discharge port 21, so as to avoid the accumulation of impurities inside the device and affect the operating efficiency of the device.

[0024] Reference Figure 4-Figure 6 The cleaning mechanism includes an arc plate 4 slidably arranged in a sleeve 28, an arc groove 261 is opened on the outer circumference of the shaft body 26, and a guide tube 41 is fixedly arranged on the arc plate 4 and is slidably connected to the arc groove 261. The arc plate 4 is arranged in the sleeve 28, and the arc groove 261 on its outer circumference drives the guide tube 41 to move up and down during the rotation of the shaft body 26, thereby controlling the arc plate 4 to move up and down.

[0025] Reference Figure 4-Figure 6 A plurality of screening holes 271 parallel to each other are provided on the screening plate 27, a cylinder 42 is fixedly provided on the arc plate 4, a scraper 43 is fixedly provided on the cylinder 42, and the screening holes 271 provided on the screening plate 27 ensure the circulation of airflow in the device.

[0026] Reference Figure 6-Figure 8 The arc plate 4 is arranged in a semicircular shape, and the two arc plates 4 in the sleeve 28 are arranged in a mirror image. 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. By arranging the arc plate 4 in a semicircular shape, the arc plate 4 slidingly arranged on the arc groove 261 can move up and down during the rotation of the shaft body 26, thereby cleaning the screening hole 271 in the screening plate 27.

[0027] Reference Figure 6-Figure 8 A slider 54 is slidably provided on the outer circumferential surface of the rotating shaft 5, a spring 55 is fixedly provided between the slider 54 and the ring 51, a plurality of brackets 541 are fixedly provided on the outer circumferential surface of the slider 54, and a connecting strip 5411 is rotatably provided between the two brackets 541, a movable plate 6 is slidably provided on the long plate 52, and the movable plate 6 is rotatably connected to the connecting strip 5411, and the slider 54 provided on the rotating shaft 5 and the connecting strip 5411 provided on the slider 54 are realized in the process of rotation of the rotating shaft 5, the centrifugal force generated by the rotating shaft 5 can drive the movable plate 6 to move, thereby realizing the inclination angle of the connecting strip 5411 to facilitate the scattering of impurities at the edge of the connecting strip 5411.

[0028] Reference Figure 7-Figure 8 A fixed plate 61 is fixedly provided on the movable plate 6, and two mutually parallel brackets 62 are fixedly provided on the fixed plate 61. A connecting shaft 63 is rotatably provided between the two brackets 62. The connecting shaft 63 is rotatably connected to the connecting bar 5411. The rotating connection between the connecting bar 5411 and the movable plate 6 is realized by the fixed plate 61 provided on the movable plate 6.

[0029] Reference Figure 1-Figure 3The connecting tube 3 is funnel-shaped with one end being small and the other end being large. By setting the connecting tube 3 in the funnel shape, the airflow in the ventilation pipe 31 can enter the interior of the device through the connecting tube 3.

[0030] Reference Figure 5-Figure 7 Each scraper 2 53 is arranged at an angle, and the inclined scraper 2 53 can clean the inside of the sleeve 29 .

[0031] The specific solution is as follows: when the staff uses the device, they first fix the device in a suitable position, and realize the support function of the entire device by setting the support column 11 on the bottom plate 1. At the same time, each support column 11 is set at the corner of the bottom plate 1 so that each support column 11 can be evenly stressed during the support process of the device, avoiding the support column 11 from being damaged due to uneven stress during the support process. At the same time, the anti-skid plate 12 set on the bottom end of the support column 11 can increase the friction between the device and the ground, avoiding the device from slipping during use. The discharge port 21 set on the outer wall of the shell 2 can realize that impurities generated during the operation of the device can be discharged through the discharge port 21, avoiding the accumulation of impurities inside the device and affecting the device. In order to improve the working efficiency, the arc plate 4 is arranged in the sleeve 28, so that during the rotation of the shaft body 26, the arc groove 261 on its outer circumferential surface drives the guide tube 41 to move up and down, thereby controlling the arc plate 4 to move up and down. The arc plate 4 is arranged in a semicircular shape, so that during the rotation of the shaft body 26, the arc plate 4 sliding on the arc groove 261 can move up and down, thereby cleaning the screening holes 271 in the screening plate 27. The slider 54 and the connecting strip 5411 arranged on the rotating shaft 5 can drive the moving plate 6 to move when the rotating shaft 5 rotates, thereby realizing the inclination angle of the connecting strip 5411, which makes it convenient for impurities to be scattered at the edge of the connecting strip 5411.

[0032] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary, and within the spirit of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0033] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable electric cable well exhaust fan with a toxic gas detection function, comprising a base plate (1), characterized in that The invention also comprises a housing (2) fixedly arranged on the bottom plate (1), a motor (22) fixedly arranged on one end of the housing (2), two mutually parallel support plates (23) fixedly arranged on the bottom plate (1), one of the support plates (23) being fixedly connected to the motor (22), a second sleeve (29) fixedly arranged on the other support plate (23), a connecting tube (3) fixedly arranged on the second sleeve (29), and a ventilation pipe (31) fixedly arranged on the connecting tube (3); 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 axis 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 circumference of the rotating shaft (5), a long plate (52) is fixedly arranged on the circular ring (51), a second scraper (53) is fixedly arranged on the upper part of the circular ring (51), and the second scraper (53) is in contact with the inner wall of the second sleeve (29).

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

3. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that: A discharge port (21) is provided on the outer wall of the outer shell (2), a screening plate (27) is fixedly provided inside the outer shell (2), a sleeve 1 (28) is fixedly provided on the screening plate (27), and the sleeve 1 (28) is coaxially arranged with the shaft body (26), the other end of the discharge port (21) is connected to the sleeve 1 (28), and a cleaning mechanism for cleaning impurities deposited inside the sleeve 1 (28) is slidably provided on the shaft body (26).

4. A portable electric cable well exhaust fan with toxic gas detection function according to claim 3, characterized in that: The cleaning mechanism comprises an arc-shaped plate (4) slidably arranged in the sleeve (28), an arc-shaped groove (261) is provided on the outer peripheral surface of the shaft body (26), and a guide tube (41) is fixedly arranged on the arc-shaped plate (4) and slidably connected to the arc-shaped groove (261).

5. A portable electric cable well exhaust fan with toxic gas detection function according to claim 4, characterized in that: The screening plate (27) is provided with a plurality of screening holes (271) which are parallel to each other. A cylinder (42) is fixedly provided on the arc-shaped plate (4), and a scraper plate 1 (43) is fixedly provided on the cylinder (42).

6. A portable electric cable well exhaust fan with toxic gas detection function according to claim 5, characterized in that: 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 cylinder (42) is not less than the depth of the screening hole (271).

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

8. A portable electric cable well exhaust fan with toxic gas detection function according to claim 7, characterized in that: A fixed plate (61) is fixedly arranged on the movable plate (6), and two mutually parallel brackets (62) are fixedly arranged on the fixed plate (61). A connecting shaft (63) is rotatably arranged between the two brackets (62), and the connecting shaft (63) is rotatably connected to the connecting bar (5411).

9. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that: The connecting tube (3) is arranged in a funnel shape with one end being small and the other end being large.

10. A portable electric cable well exhaust fan with toxic gas detection function according to claim 1, characterized in that: Each of the scraper blades 2 (53) is arranged at an angle.

Images