A dust removal system for unpowered pressure relief at the belt transfer point

Abstract

The present invention discloses a power-free pressure relief and dust removal system for a belt transfer point, comprising: a belt conveying device: a belt, a chute pipe and a feeding assembly, the feeding assembly is arranged on the belt, and the chute pipe is arranged on the feeding assembly; a power-free pressure relief and dust removal device: a pressure relief air duct mechanism, a wind direction guiding mechanism, a dust removal mechanism, a connection control mechanism, an air duct cleaning mechanism and a movable trolley, the pressure relief air duct mechanism is erected outside the belt, behind the chute pipe and above the feeding assembly, and its lower end is arranged in the movable trolley; the upper end of the wind direction guiding mechanism is communicated with the lower end of the pressure relief air duct mechanism, and the lower end of the wind direction guiding mechanism is communicated with the upper end of the feeding assembly; the dust removal mechanism is arranged at the bottom of the pressure relief air duct mechanism; the connection control mechanism is arranged at the top of the pressure relief air duct mechanism; the air duct cleaning mechanism is arranged at the side of the pressure relief air duct mechanism, one end is inserted into the pressure relief air duct mechanism, and the other end is connected with the dust removal mechanism; and a maintenance platform, erected in front of the pressure relief air duct mechanism and behind the chute pipe. The present invention improves the pressure relief and dust removal effect.

Description

Technical Field

[0001] The present invention relates to the technical field of bulk material conveying pressure relief and dust removal, and particularly to a power-free pressure relief and dust removal system for belt transfer points. Background Art

[0002] Due to the height difference in bulk material conveying, a large amount of wind pressure will be generated during the transfer process at the belt transfer point to form induced wind. The induced wind will carry a large amount of dust, which has hazards such as polluting the atmosphere, endangering human health, and explosion. At present, the main bulk material conveying pressure relief and dust removal systems are as follows:

[0003] 1. Pressure relief windows are installed in front of the material falling area. The dust-containing gas is filtered through a filter screen to achieve the effects of pressure relief and dust removal. However, there are the following problems: it is difficult to determine the filtering diameter of the filter screen. When the diameter is large, the dust diffuses to the outside together with the induced wind, and the dust suppression effect cannot be achieved; when the filtering diameter is small, the dust easily clogs the filter screen, causing it to lose its due function.

[0004] 2. Dust collector dust removal systems. Commonly used dust collectors are: a. Filter dust collectors (typical representatives are bag dust collectors and dry dust collectors: when the dust-containing gas has high viscosity, it is easy to adhere to the surface of the dust collector and requires frequent maintenance, with a large amount of maintenance work. When the maintenance is reduced, the due dust removal effect will be lost); b. Electrostatic dust collectors. Electrostatic dust removal is not suitable when the resistance of the dust-containing gas is too large or too small, and it has limitations in use; c. Wet dust collectors. It is inconvenient to clean the generated sludge, and the whole equipment has a lot of consumables and high investment. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a power-free pressure relief and dust removal system for belt transfer points.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a power-free pressure relief and dust removal system for belt transfer points, including: at least one belt conveying device, a power-free pressure relief and dust removal device, and at least one maintenance platform;

[0008] The belt conveying device includes a belt, a chute, and a material guiding component. The material guiding component is installed on the belt, and the chute is installed on the material guiding component;

[0009] The non-powered pressure relief and dust removal device includes: a pressure relief air duct mechanism, at least one wind direction guiding mechanism, at least one dust removal mechanism, at least one connection control mechanism, an air duct cleaning mechanism, and two movable trolleys. The pressure relief air duct mechanism has an inverted U-shaped structure, with its left and right ends respectively erected on the left and right sides of the belt, behind the chute and above the feeding assembly. The lower ends of the two bottoms of the pressure relief air duct mechanism are installed in the two movable trolleys. The upper port of the wind direction guiding mechanism is communicated with the lower port of the top of the pressure relief air duct mechanism, and the lower port of the wind direction guiding mechanism is communicated with the upper port of the feeding assembly. The dust removal mechanism is installed at the bottom of the pressure relief air duct mechanism, and the lower end of the dust removal mechanism is installed in a corresponding movable trolley. The connection control mechanism is installed at the top of the pressure relief air duct mechanism. The air duct cleaning mechanism is installed in the middle of the pressure relief air duct mechanism, with one end inserted into the pressure relief air duct mechanism and the other end connected to the dust removal mechanism.

[0010] The maintenance platform is erected in front of the pressure relief air duct mechanism and behind the chute.

[0011] Further, the pressure relief air duct mechanism includes an inclined air duct, two corner air ducts, and two vertical air ducts. The upper ends of the two corner air ducts are respectively communicated with the left and right ends of the inclined air duct, and the lower end of the corner air duct is communicated with the upper end of the vertical air duct. The two vertical air ducts are respectively erected on the outer sides of the two belts, and the inclined air duct is behind the chute and above the feeding assembly. The air duct cleaning mechanism is installed on the corner air duct and the vertical air duct connected to the high end of the inclined air duct. The lower ends of the two vertical air ducts are installed in the two movable trolleys.

[0012] Further, each wind direction guiding mechanism includes a baffle curtain and a pressure relief cover. The upper port of the pressure relief cover is communicated with the lower port of the inclined air duct, and the lower port of the pressure relief cover is communicated with the upper port of the feeding assembly. The baffle curtain is installed in the feeding assembly, with its upper end fixed to the rear edge of the lower port of the pressure relief cover, its lower end hanging on the upper surface of the belt, and its left and right ends leaning against the inner side walls of the feeding assembly.

[0013] Further, the dust removal mechanism includes a control box, a cable, a water inlet pipe, a water level sensor, a first overflow pipe, a quick connector, and a second overflow pipe. A water tank is arranged on the movable trolley. The lower end of the vertical air duct leads into the water tank of the corresponding movable trolley. The cable and the water inlet pipe are attached to the front side of the vertical air duct, and the lower ends of the cable and the water inlet pipe lead into the water tank and extend forward at the upper ends and are connected to the control box. The water level sensor is installed at the lower end of the cable. The water inlet pipe is also communicated with the air duct cleaning mechanism. One end of the first overflow pipe is communicated with the upper end of the movable trolley, and the other end of the first overflow pipe is communicated with the second overflow pipe through the quick connector.

[0014] Further, a limit fixing block is installed on the movable trolley. The limit fixing block includes a support rod and a limit piece. The upper end of the support rod is installed at the bottom of the movable trolley, and the lower end of the support rod is fixedly connected to the limit piece.

[0015] Further, the connection control mechanism includes a control valve, two inclined plates arranged in parallel, and a flap. The control valve includes a movable rod, a driving rod, and a connecting plate. The two inclined plates are installed on the front and rear inner side walls of the inclined air duct and are located above the upper port of the pressure relief cover. The flap is located in the inclined air duct, and its front and rear sides are respectively movably connected to the two inclined plates. The connecting plate is located on the outer side wall of the inclined air duct. The movable rod is respectively hinged to one end of the connecting plate, one end of the flap, and the upper ends of the two inclined plates. The driving rod is installed at the other end of the connecting plate and is located above the flap. A first limit plate is provided at the upper end of the flap, and a second limit plate is provided at the lower end of the flap. When closed, the first limit plate and the second limit plate just abut against the upper and lower inner side walls of the inclined air duct.

[0016] Further, the air duct cleaning mechanism includes a cleaning pipe, a solenoid valve, and a nozzle. The nozzle is located at the high end of the inclined air duct. The cleaning pipe is attached to the side wall of the vertical air duct close to the high end of the inclined air duct, and the lower end of the cleaning pipe is communicated with the water inlet pipe. The upper end of the cleaning pipe is inserted into the corner air duct close to the high end of the inclined air duct and is communicated with the nozzle.

[0017] Further, the nozzle is a flat nozzle, and the flat nozzle is installed at the junction of the high end port of the inclined air duct and the upper port of the corner air duct.

[0018] Further, the non-powered pressure relief and dust removal device further includes at least one inspection mechanism. The inspection mechanism includes an inspection door and a handle. An opening matching the inspection door is provided at the upper end of the inclined air duct. The inspection door is arranged in the opening, and one side of the inspection door is hinged to the corresponding side of the opening.

[0019] Further, the maintenance platform includes a ladder, a safety cage, a guardrail, a fixed platform, and a kick plate. The lower end of the ladder is fixed to the ground, and the upper end of the ladder is fixedly connected to the outer side of the fixed platform. The safety cage is arranged around the side of the fixed platform close to the ladder. The guardrail is arranged around the front side, inner side, and rear side of the fixed platform and is fixedly connected to the side adjacent to the safety cage. The kick plate is installed at the connection of the fixed platform, the safety cage, and the guardrail. A groove matching the upper cover plate and the chute of the material guiding assembly is provided in the middle of the fixed platform. The chute and the upper cover plate of the material guiding assembly are just clamped in the groove.

[0020] Adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1) The dust-containing gas is guided by the wind direction guiding mechanism to the pressure relief air duct mechanism, and enters the water tank of the movable trolley through the pressure relief air duct mechanism. After the gas passes through the water bath, the dust-free gas is discharged, and the dust is fused with water and precipitated at the bottom of the water tank, achieving the effect of pressure relief and dust removal. The movable trolley is used to regularly handle the sediment deposited at the bottom of the water tank to a designated position, with less equipment maintenance. The sludge generated by dust removal can be transferred to the designated position by the movable trolley, which is convenient for cleaning. Since the present invention directly passes the dust through the pressure relief air duct mechanism into the water tank to fuse with water to achieve the effect of pressure relief and dust removal, rather than using the traditional dust removal methods of filters and dust collectors, it avoids the problems existing in the use of filters or dust collectors;

[0022] 2) The pressure relief cover of the wind direction guiding mechanism adopts an expanded design, which can release the pressure generated during the material transfer process. In actual operation, the operating conditions of multiple belts are often one running and one standby (when there are two belts) or two running and one standby (when there are three belts). Through the connection of the pressure relief air duct mechanism, multiple feeding troughs can be connected, and the air pressure generated during the material transfer of the running belt can be released by using the control device of the standby belt feeding trough, effectively preventing dust spillage;

[0023] 3) The present invention has the functions of automatic water injection and self-cleaning of the air duct. The air duct cleaning mechanism is installed at the high end of the inclined air duct. When spraying water through the nozzle, due to the water pressure, the air duct near the nozzle can be cleaned. Due to the inclination of the inclined air duct, the water rushes from the high place to the low place under the action of gravity, thereby cleaning the air duct at the low place;

[0024] 4) The use of a maintenance platform makes maintenance more convenient, and the maintenance work of the non-powered pressure relief dust removal device can also be carried out when the belt is running. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of the combination of the non-powered pressure relief dust removal device and the maintenance platform in a non-powered pressure relief dust removal device for a belt transfer point provided by the present invention.

[0027] Figure 2 It is a schematic structural diagram of the wind direction guiding mechanism, dust removal mechanism, connection control mechanism, inspection mechanism and maintenance platform in the non-powered pressure relief dust removal device of the present invention when the quantity is 1.

[0028] Figure 3It is a schematic structural diagram when the number of the air direction guiding mechanism, dust removal mechanism, connection control mechanism, inspection mechanism and maintenance platform in the unpowered pressure relief and dust removal device of the present invention is 2.

[0029] Figure 4 It is Figure 3 a schematic structural diagram of the pressure relief air duct mechanism in

[0030] Figure 5 It is Figure 4 the front view of

[0031] Figure 6 It is Figure 3 a schematic structural diagram of the air direction guiding mechanism in

[0032] Figure 7 It is Figure 3 a schematic structural diagram of the dust removal mechanism in

[0033] Figure 8 It is Figure 3 a schematic structural diagram of the connection control mechanism in (connection open state)

[0034] Figure 9 It is Figure 3 a schematic structural diagram of the connection control mechanism in (connection closed state)

[0035] Figure 10 It is Figure 3 a schematic structural diagram of the air duct cleaning mechanism in

[0036] Figure 11 It is Figure 10 an enlarged schematic diagram of part A in

[0037] Figure 12 It is Figure 1 a schematic structural diagram of the maintenance platform in

[0038] Figure 13 It is a schematic structural diagram of a belt transfer point unpowered pressure relief and dust removal system provided by the present invention (when the number of belt conveying devices is 1).

[0039] Figure 14 It is a schematic structural diagram of a belt transfer point unpowered pressure relief and dust removal system provided by the present invention (when the number of belt conveying devices is 2).

[0040] Figure 15 It is an installation schematic diagram of the curtain, belt and feeding assembly provided by the present invention.

[0041] Description of reference numerals in the figure:

[0042] Powerless pressure relief and dust removal device 100, pressure relief air duct mechanism 1, inclined air duct 11, corner air duct 12, vertical air duct 13, opening 14, wind direction guiding mechanism 2, curtain 21, pressure relief hood 22, dust removal mechanism 3, control box 31, cable 32, water inlet pipe 33, water level sensor 34, first overflow pipe 35, quick connector 36, second overflow pipe 37, connection control mechanism 4, control valve 41, inclined plate 42, flap 43, movable rod 44, driving rod 45, connecting plate 46, first limiting plate 47, second limiting plate 48, air duct cleaning mechanism 5, cleaning pipe 51, solenoid valve 52, nozzle 53, inspection mechanism 6, inspection door 61, handle 62, movable trolley 7, water tank 71, limit fixing block 72, support rod 721, limiting piece 722;

[0043] Maintenance platform 200, ladder 201, protective cage 202, guardrail 203, fixed platform 204, kickboard 205, groove 206;

[0044] Belt conveyor device 300, belt 301, chute 302, feeding assembly 303, upper cover plate 304. Specific embodiments

[0045] The present invention will be further described in detail below with reference to the drawings and embodiments. It should be particularly noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0046] Embodiment 1:

[0047] Please refer to Figures 1 - 12 , a powerless pressure relief and dust removal device 100 for a belt transfer point of the present invention, the powerless pressure relief and dust removal device 100 comprising: a pressure relief air duct mechanism 1, at least one wind direction guiding mechanism 2, at least one dust removal mechanism 3, at least one connection control mechanism 4, an air duct cleaning mechanism 5, at least one inspection mechanism 6, two movable trolleys 7 and at least one maintenance platform 200 located in front of the pressure relief air duct mechanism 1; the pressure relief air duct mechanism 1 has an inverted U-shaped structure, the lower ends of the two bottoms of the pressure relief air duct mechanism 1 are installed in the two movable trolleys 7, the wind direction guiding mechanism 2 is installed at the lower end of the top of the pressure relief air duct mechanism 1, the dust removal mechanism 3 is installed at the bottom of the pressure relief air duct mechanism 1, and the lower end of the dust removal mechanism 3 is installed in a corresponding movable trolley 7; the connection control mechanism 4 is installed at the top of the pressure relief air duct mechanism 1, the air duct cleaning mechanism 5 is installed in the middle of the pressure relief air duct mechanism 1, one end of which is inserted into the pressure relief air duct mechanism 1 and the other end is connected to the dust removal mechanism 3; the inspection mechanism 6 is arranged at the upper end of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11).

[0048] The number of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6 and the maintenance platform 200 is determined according to the number of the belt conveyor devices 300, and the numbers of the two are paired one by one.

[0049] For example: as Figure 2 shown, when the number of the belt conveyor devices 300 is 1, the numbers of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6 and the maintenance platform 200 adopted are all 1; the corresponding structure is: the wind direction guiding mechanism 2 is installed at the lower end of the top of the pressure relief air duct mechanism 1, the dust removal mechanism 3 is installed at the bottom of the pressure relief air duct mechanism 1, the connection control mechanism 4 is installed at the top of the pressure relief air duct mechanism 1, the air duct cleaning mechanism 5 is installed at the side of the pressure relief air duct mechanism 1, one end of which is inserted into the pressure relief air duct mechanism 1 and the other end is connected to the dust removal mechanism 3; the inspection mechanism 6 is arranged at the upper end of the top of the pressure relief air duct mechanism 1 (specifically the inclined air duct 11).

[0050] For example: as Figure 3 shown, when the number of the belt conveyor devices 300 is 2, the numbers of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6 and the maintenance platform 200 adopted are all 2; the corresponding structure is: the two wind direction guiding mechanisms 2 are respectively installed on both sides of the lower end of the top of the pressure relief air duct mechanism 1, the two dust removal mechanisms 3 are respectively installed at the bottom of the pressure relief air duct mechanism 1, the two connection control mechanisms 4 are respectively installed at both ends of the top of the pressure relief air duct mechanism 1, the air duct cleaning mechanism 5 is installed at the side of the pressure relief air duct mechanism 1, one end of which is inserted into the pressure relief air duct mechanism 1 and the other end is connected to the dust removal mechanism 3; the inspection mechanism 6 is arranged at the left and right ends of the top of the pressure relief air duct mechanism 1 (specifically the inclined air duct 11).

[0051] The numbers of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6 and the maintenance platform 200 are correspondingly set according to the number of the belt conveyor devices 300, and the numbers can also be 3, 4, 5 and so on.

[0052] In this embodiment, the pressure relief air duct mechanism 1 includes an inclined air duct 11, two corner air ducts 12 and two vertical air ducts 13. The upper ends of the two corner air ducts 12 are respectively communicated with the left and right ends of the inclined air duct 11, and the lower end of the corner air duct 12 is communicated with the upper end of the vertical air duct 13. The inclination angle a of the inclined air duct 11 is 5-20 degrees. The number of the air duct cleaning mechanisms 5 is one, and the air duct cleaning mechanism 5 is installed on the corner air duct 12 and the vertical air duct 13 connected to the high end of the inclined air duct 11. The lower ends of the two vertical air ducts 13 are installed in two movable trolleys 7. The structure of the pressure relief air duct mechanism 1 is not limited to a square pipe. Since the inclined air duct 11 is arranged in an inclined manner, most of the dust will slide from a high place to a low place, reducing the dust deposition at the high place. The air duct cleaning mechanism 5 is installed at the high end of the inclined air duct 11. When water is sprayed through the nozzle, due to the water pressure, the air duct near the nozzle can be cleaned. Due to the inclination of the inclined air duct, the water rushes from a high place to a low place under the action of gravity, thereby cleaning the air duct at the low place and preventing water accumulation in the inclined air duct 11. Thus, the dust accumulated in the air duct can be effectively cleaned up.

[0053] In this embodiment, the wind direction guiding mechanism 2 includes a curtain 21 and a pressure relief hood 22. The upper port of the pressure relief hood 22 is communicated with the lower end of the top of the pressure relief air duct mechanism 1, and the curtain 21 is vertically installed on the rear edge of the lower port of the pressure relief hood 22. Since the curtain 21 is fixed on the pressure relief hood 22, it can induce the wind to move along Figure 6 the arrow direction. After being blocked by the curtain 21, the induced wind moves upward along the pressure relief hood 22. By means of the pressure relief hood 22, the volume of the dust-containing gas is increased, achieving a pressure relief effect.

[0054] In this embodiment, the dust removal mechanism 3 includes a control box 31, a cable 32, a water inlet pipe 33, a water level sensor 34, a first overflow pipe 35, a quick connector 36 and a second overflow pipe 37. A water tank 71 is provided on the movable trolley 7. The lower end of the pressure relief air duct mechanism 1 (specifically, the vertical air duct 13) communicates with the water tank 71 of a corresponding movable trolley 7. The dust-containing gas enters the water tank 71 of the movable trolley 7 through the pressure relief air duct mechanism 1. After the gas passes through the water bath, the dust-free gas is discharged, and the dust is fused with water and precipitated at the bottom of the water tank 71 to achieve the dust removal effect. The movable trolley 7 is used to regularly dispose of the precipitate at the bottom of the water tank 71 to a designated location; the cable 32 and the water inlet pipe 33 are attached to the front side of the bottom of the pressure relief air duct mechanism 1 (specifically, the vertical air duct 13), and the lower ends of the cable 32 and the water inlet pipe 33 communicate with the water tank 71, and their upper ends extend forward and are connected to the control box 31. The water level sensor 34 is installed at the lower end of the cable 32. The water level sensor 34 senses the water level in the water tank 71 and is controlled by the control box 31 to realize the automatic water inlet function of the water inlet pipe 33 (the height of the water level can be adjusted according to the pressure relief air volume on site, and the specific position is adjusted according to the actual situation); the water inlet pipe 33 is also communicated with the air duct cleaning mechanism 5; one end of the first overflow pipe 35 communicates with the upper end of the movable trolley 7, and the other end of the first overflow pipe 35 is communicated with the second overflow pipe 37 through the quick connector 36. Since a first overflow pipe 35 is fixed on the movable trolley 7 (with a self-dumping water tank 71), a second overflow pipe 37 is fixed around the material guiding groove (the outlet is directly connected to the existing drainage tank), and the first overflow pipe 35 and the second overflow pipe 37 are connected through the quick connector 36. When the water exceeds the position of the first overflow pipe 35, it can automatically drain water outward.

[0055] In this embodiment, a limit fixing block 72 is installed on the movable trolley 7. The limit fixing block 72 includes a support rod 721 and a limit piece 722. The upper end of the support rod 721 is installed at the bottom of the movable trolley 7, and the lower end of the support rod 721 is fixedly connected to the limit piece 722. The movable trolley 7 is limited and fixed by the limit fixing block 72.

[0056] In this embodiment, the connection control mechanism 4 includes a control valve 41, two parallel inclined plates 42, and a flap 43. The control valve 41 includes a movable rod 44, a driving rod 45, and a connecting plate 46. The two inclined plates 42 are installed on the front and rear inner side walls of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11), and are located above the wind direction guiding mechanism 2 (specifically, the pressure relief hood 22). The flap 43 is located in the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11), and its front and rear sides are respectively movably connected to the two inclined plates 42. The connecting plate 46 is located on the outer side wall of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11). The movable rod 44 is respectively hinged to one end of the connecting plate 46, one end of the flap 43, and the upper ends of the two inclined plates 42. The driving rod 45 is installed at the other end of the connecting plate 46 and is located above the flap 43. A first limiting plate 47 is provided at the upper end of the flap 43, and a second limiting plate 48 is provided at the lower end of the flap 43. When closed, the first limiting plate 47 and the second limiting plate 48 exactly abut against the upper and lower inner side walls of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11). By rotating the control valve 41, the rotation of the flap 43 in the pressure relief air duct mechanism 1 is controlled to realize the opening / closing state of the air duct connection. The functions of the connection control mechanism 4 are as follows: 1) In the normal state, the flap 43 is open to ensure the connection of the air ducts; 2) When a belt 301 is running and the non-running belt 301 needs to be repaired, the flap 43 needs to be closed to ensure that the dust-containing gas does not blow towards the repaired belt 301 and does not affect the repair.

[0057] In this embodiment, the air duct cleaning mechanism 5 includes a cleaning pipe 51, a solenoid valve 52, and a nozzle 53. The nozzle 53 is located at the high end of the inner top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11). The cleaning pipe 51 is attached to the side wall of the bottom (specifically, the vertical air duct 13) near the high end of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11), and the lower end of the cleaning pipe 51 is connected to the dust removal mechanism 3. The upper end of the cleaning pipe 51 is inserted into the pressure relief air duct mechanism 1 (specifically, the corner air duct 12 near the high end of the inclined air duct 11) and is connected to the nozzle 53. In this embodiment, the nozzle 53 is a flat nozzle, and the flat nozzle is installed at the junction of the high end of the inner top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11) and the upper end of the bottom (specifically, the corner air duct 12). The air duct cleaning mechanism 5 is installed on the higher side of the inclined air duct 11 of the pressure relief air duct mechanism 1, and is controlled by the control box 31 and the solenoid valve 52 to realize the periodic water spraying of the flat nozzle, achieving the function of self-cleaning of the air duct.

[0058] In this embodiment, the inspection mechanism 6 includes an inspection door 61 and a handle 62. An opening 14 matching the inspection door 61 is provided at the upper end of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11). The inspection door 61 is arranged in the opening 14, and one side of the inspection door 61 is hinged to the corresponding side of the opening 14. The handle 62 is provided on the inspection door 61. The dust accumulation condition in the inclined air duct 11 is observed through the inspection door 61.

[0059] In this embodiment, the maintenance platform 200 is used for maintaining the non-powered pressure relief dust removal device 100. The maintenance platform 200 includes a ladder 201, a safety cage 202, a guardrail 203, a fixed platform 204, and a kick plate 205. The lower end of the ladder 201 is fixed to the ground, and the upper end of the ladder 201 is fixedly connected to the outside of the fixed platform 204. The safety cage 202 is disposed around one side of the fixed platform 204 close to the ladder 201. The guardrail 203 is disposed around the front side, inner side, and rear side of the fixed platform 204 and is fixedly connected to the side adjacent to the safety cage 202. The kick plate 205 is installed at the connection of the fixed platform 204 with the safety cage 202 and the guardrail 203. A groove 206 matching the upper cover plate 304 of the material guiding assembly 303 is provided in the middle of the fixed platform 204. The use of the maintenance platform 200 makes the maintenance more convenient, and the non-powered pressure relief dust removal device 100 can also be repaired during the operation of the belt.

[0060] Embodiment Two:

[0061] As Figures 13 - 15 shown, the difference between Embodiment Two and Embodiment One is that:

[0062] A non-powered pressure relief dust removal device 100 of the present invention for a belt transfer point is applied to a belt conveyor device to form a non-powered pressure relief dust removal system for a belt transfer point. The specific content is as follows:

[0063] A non-powered pressure relief dust removal system for a belt transfer point of the present invention includes: a non-powered pressure relief dust removal device 100, at least one maintenance platform 200, and at least one belt conveyor device 300;

[0064] The belt conveyor device 300 includes a belt 301, a chute pipe 302, and a material guiding assembly 303. The material guiding assembly 303 is installed on the belt 301, and the chute pipe 302 is installed on the material guiding assembly 303. The chute pipe 302 (i.e., the coal dropping pipe, which mainly includes ordinary coal dropping pipes and curved coal dropping pipes in the current market) is a general term for the material conveying pipes in industries such as coal, ports, thermal power plants, coal transfer stations, coal washing plants, and coal-fired industrial boilers. The material mostly falls freely in the chute pipe 302. The free fall and excessive speed generate negative pressure, which adsorbs the surrounding air and mixes with the material. The material mixed with air falls onto the belt and squeezes out the air, generating a large amount of dust at the material receiving part of the belt. Therefore, the unpowered pressure relief dust removal device 100 for dust removal needs to be installed at the rear position of the chute pipe 302. The material guiding assembly 303 is a material guiding trough, which is mainly installed at the material receiving part of the belt conveyor. The whole material guiding trough adopts a closed structure to prevent dust diffusion.

[0065] The unpowered pressure relief dust removal device 100 includes: a pressure relief air duct mechanism 1, at least one wind direction guiding mechanism 2, at least one dust removal mechanism 3, at least one connection control mechanism 4, an air duct cleaning mechanism 5, at least one inspection mechanism 6, and two movable trolleys 7. The pressure relief air duct mechanism 1 has an inverted U-shaped structure, and its left and right ends are respectively erected on the left and right sides of the belt 301, and are located behind the chute pipe 302 and above the material guiding assembly 303. The two bottom ends of the pressure relief air duct mechanism 1 are installed in the two movable trolleys 7. The upper port of the wind direction guiding mechanism 2 is communicated with the lower port of the top of the pressure relief air duct mechanism 1, and the lower port of the wind direction guiding mechanism 2 is communicated with the upper port of the material guiding assembly 303. The dust removal mechanism 3 is installed at the bottom of the pressure relief air duct mechanism 1, and the lower end of the dust removal mechanism 3 is installed in a corresponding movable trolley 7. The connection control mechanism 4 is installed at the top of the pressure relief air duct mechanism 1, and the air duct cleaning mechanism 5 is installed in the middle of the pressure relief air duct mechanism 1. One end of it is inserted into the pressure relief air duct mechanism 1, and the other end is connected to the dust removal mechanism 3. The inspection mechanism 6 is arranged at the upper end of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11).

[0066] The maintenance platform 200 is erected in front of the pressure relief air duct mechanism 1 and behind the chute pipe 302.

[0067] The numbers of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6, and the maintenance platform 200 are determined according to the number of the belt conveyor devices 300, and the numbers of the two are paired one by one.

[0068] For example: Such as Figure 13As shown, when the number of the belt conveyor device 300 is 1, the numbers of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6 and the maintenance platform 200 are all 1; the corresponding structures are: one non-powered pressure relief dust removal device 100, one maintenance platform 200 and one belt conveyor device 300;

[0069] The belt conveyor device 300 includes a belt 301, a chute pipe 302 and a feeding component 303. The feeding component 303 is installed on the belt 301, and the chute pipe 302 is installed on the feeding component 303;

[0070] The non-powered pressure relief dust removal device 100 includes: a pressure relief air duct mechanism 1, a wind direction guiding mechanism 2, a dust removal mechanism 3, a connection control mechanism 4, an air duct cleaning mechanism 5, an inspection mechanism 6 and two movable trolleys 7. The pressure relief air duct mechanism 1 is in an inverted U-shaped structure, and its left and right ends are respectively erected on the left and right sides of the belt 301, and are located behind the chute pipe 302 and above the feeding component 303; the two bottom ends of the pressure relief air duct mechanism 1 are installed in the two movable trolleys 7. The upper port of the wind direction guiding mechanism 2 is communicated with the lower port of the top of the pressure relief air duct mechanism 1, and the lower port of the wind direction guiding mechanism 2 is communicated with the upper port of the feeding component 303; the dust removal mechanism 3 is installed at the bottom of the pressure relief air duct mechanism 1, and the lower end of the dust removal mechanism 3 is installed in a corresponding movable trolley 7; the connection control mechanism 4 is installed at the top of the pressure relief air duct mechanism 1, and the air duct cleaning mechanism 5 is installed in the middle of the pressure relief air duct mechanism 1, one end of which is inserted into the pressure relief air duct mechanism 1 and the other end is connected with the dust removal mechanism 3; the inspection mechanism 6 is arranged at the upper end of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11);

[0071] The maintenance platform 200 is erected in front of the pressure relief air duct mechanism 1 and behind the chute pipe 302.

[0072] For example: as Figure 14 As shown, when the number of the belt conveyor devices 300 is 2, the numbers of the wind direction guiding mechanism 2, the dust removal mechanism 3, the connection control mechanism 4, the inspection mechanism 6 and the maintenance platform 200 are all 2; the corresponding structures are: one non-powered pressure relief dust removal device 100, two maintenance platforms 200 and two belt conveyor devices 300;

[0073] Each of the belt conveyor devices 300 includes a belt 301, a chute pipe 302 and a feeding component 303. The feeding component 303 is installed on the belt 301, and the chute pipe 302 is installed on the feeding component 303;

[0074] The non-powered pressure relief and dust removal device 100 includes: a pressure relief air duct mechanism 1, two wind direction guiding mechanisms 2, two dust removal mechanisms 3, two connection control mechanisms 4, an air duct cleaning mechanism 5, two inspection mechanisms 6, and two movable trolleys 7. The pressure relief air duct mechanism 1 has an inverted U-shaped structure, with its left and right ends respectively erected outside the two belts 301, behind the chute 302 and above the feeding assembly 303. The lower ends of the two bottoms of the pressure relief air duct mechanism 1 are installed in the two movable trolleys 7. The upper ports of the two wind direction guiding mechanisms 2 are respectively communicated with the lower ports on both sides of the top of the pressure relief air duct mechanism 1, and the lower ports of the two wind direction guiding mechanisms 2 are respectively communicated with the upper ports of the two feeding assemblies 303. The two dust removal mechanisms 3 are respectively installed at the bottom of the pressure relief air duct mechanism 1, and the lower ends of the dust removal mechanisms 3 are installed in the corresponding movable trolley 7. The two connection control mechanisms 4 are respectively installed at both ends of the top of the pressure relief air duct mechanism 1. The air duct cleaning mechanism 5 is respectively installed in the middle of the pressure relief air duct mechanism 1, with one end inserted into the pressure relief air duct mechanism 1 and the other end connected to the dust removal mechanism 3. The two inspection mechanisms 6 are arranged on both sides of the upper end of the top of the pressure relief air duct mechanism 1 (specifically, the inclined air duct 11).

[0075] The maintenance platform 200 is erected in front of the pressure relief air duct mechanism 1 and behind the chute 302.

[0076] The number of the wind direction guiding mechanisms 2, the dust removal mechanisms 3, the connection control mechanisms 4, the inspection mechanisms 6, and the maintenance platform 200 is correspondingly set according to the number of the belt conveyor devices 300, and the number can also be 3, 4, 5, etc.

[0077] The following will be described with the number of the belt conveyor devices 300 being 2:

[0078] In this embodiment, the pressure relief air duct mechanism 1 includes an inclined air duct 11, two corner air ducts 12 and two vertical air ducts 13. The upper ends of the two corner air ducts 12 are respectively communicated with the left and right ends of the inclined air duct 11, and the lower end of the corner air duct 12 is communicated with the upper end of the vertical air duct 13; the inclination angle a of the inclined air duct 11 is 5-20 degrees. The two vertical air ducts 13 are respectively installed outside the two belts 301, and the inclined air duct 11 is located behind the chute 302 and above the feeding assembly 303; the number of the air duct cleaning mechanisms 5 is one, and the air duct cleaning mechanism 5 is installed on the corner air duct 12 and the vertical air duct 13 connected to the high end of the inclined air duct 11; the lower ends of the two vertical air ducts 13 are installed in two movable trolleys 7. The structure of the pressure relief air duct mechanism 1 is not limited to square pipes. Since the inclined air duct 11 is arranged obliquely, most of the dust will slide from the high place to the low place, reducing the dust deposition at the high place; the air duct cleaning mechanism 5 is installed at the high end of the inclined air duct 11. When spraying water through the nozzle, due to the water pressure, the air duct near the nozzle can be cleaned. Due to the inclination of the inclined air duct, the water rushes from the high place to the low place under the action of gravity, thereby cleaning the air duct at the low place and preventing water accumulation in the inclined air duct 11; thus effectively cleaning the dust accumulated in the air duct.

[0079] In this embodiment, the wind direction guiding mechanism 2 includes a baffle curtain 21 and a pressure relief cover 22. The upper port of the pressure relief cover 22 is communicated with the lower ports on both sides of the inclined air duct 11, and the lower ports of the two pressure relief covers 22 are respectively communicated with the upper ports of the two feeding assemblies 303; the baffle curtain 21 is installed in the feeding assembly 303, and its upper end is fixed on the rear edge of the lower port of the pressure relief cover 22, its lower end hangs on the upper surface of the belt, and its left and right ends are abutted against the inner side walls of the feeding assembly 303. The baffle curtain 21 is made of flexible material. When the material passes through the baffle curtain 21 during the conveying process by the belt 301, the baffle curtain 21 can be slightly lifted upward along the conveying direction, enabling the material to pass smoothly and blocking most of the air volume. Since the baffle curtain 21 is fixed on the pressure relief cover 22, it can induce the wind to move along Figure 6 the arrow direction. After being blocked by the baffle curtain 21, the induced wind moves upward along the pressure relief cover 22; the pressure relief cover 22 increases the volume release space of the dust-containing gas, achieving the pressure relief effect.

[0080] In this embodiment, the maintenance platform 200 includes a ladder 201, a safety cage 202, a guardrail 203, a fixed platform 204 and a skirting board 205. The lower end of the ladder 201 is fixed to the ground, and the upper end of the ladder 201 is fixedly connected to the outer side of the fixed platform 204. The safety cage 202 is disposed around one side of the fixed platform 204 close to the ladder 201. The guardrail 203 is disposed around the front side, inner side and rear side of the fixed platform 204 and is fixedly connected to the side adjacent to the safety cage 202. The skirting board 205 is installed at the connection of the fixed platform 204 with the safety cage 202 and the guardrail 203. A groove 206 matching the upper cover plate 304 of the material guiding assembly 303 and the chute 302 is provided in the middle of the fixed platform 204, and the chute 302 and the upper cover plate of the material guiding assembly 303 are exactly clamped in the groove 206. The use of the maintenance platform 200 makes maintenance more convenient, and the maintenance work of the non-powered pressure relief dust removal device 100 can also be carried out while the belt is running.

[0081] The above are only some embodiments of the present invention, and thus do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall equally be included in the patent protection scope of the present invention.

Claims

1. A power-free pressure relief and dust removal system for belt transfer points, characterized in that Comprising: At least one belt conveyor device, a non-powered pressure relief and dust removal device, and at least one maintenance platform; The belt conveyor device includes a belt, a chute pipe, and a material guiding assembly. The material guiding assembly is installed on the belt, and the chute pipe is installed on the material guiding assembly; The non-powered pressure relief and dust removal device includes: a pressure relief air duct mechanism, at least one wind direction guiding mechanism, at least one dust removal mechanism, at least one connection control mechanism, an air duct cleaning mechanism, and two movable trolleys. The pressure relief air duct mechanism has an inverted U-shaped structure, and its left and right ends are respectively erected on the left and right sides of the belt, and are located behind the chute pipe and above the material guiding assembly; the lower ends of the two bottoms of the pressure relief air duct mechanism are installed in the two movable trolleys. The upper port of the wind direction guiding mechanism is communicated with the lower port of the top of the pressure relief air duct mechanism, and the lower port of the wind direction guiding mechanism is communicated with the upper port of the material guiding assembly; the dust removal mechanism is installed at the bottom of the pressure relief air duct mechanism, and the lower end of the dust removal mechanism is installed in a corresponding movable trolley; the connection control mechanism is installed at the top of the pressure relief air duct mechanism; the air duct cleaning mechanism is installed in the middle of the pressure relief air duct mechanism, one end of which is inserted into the pressure relief air duct mechanism, and the other end is connected to the dust removal mechanism; The maintenance platform is erected in front of the pressure relief air duct mechanism and behind the chute pipe.

2. The unpowered pressure relief dust removal system for a belt transfer point according to claim 1, wherein, The pressure relief air duct mechanism includes an inclined air duct, two corner air ducts, and two vertical air ducts. The upper ends of the two corner air ducts are respectively communicated with the left and right ends of the inclined air duct, and the lower end of the corner air duct is communicated with the upper end of the vertical air duct; the two vertical air ducts are respectively erected on the outer sides of the two belts, and the inclined air duct is located behind the chute pipe and above the material guiding assembly; the air duct cleaning mechanism is installed on the corner air duct and the vertical air duct connected to the high end of the inclined air duct; the lower ends of the two vertical air ducts are installed in the two movable trolleys.

3. The unpowered pressure relief dust removal system for belt transfer points according to claim 2, wherein Each wind direction guiding mechanism includes a baffle curtain and a pressure relief cover. The upper port of the pressure relief cover is communicated with the lower port of the inclined air duct, and the lower port of the pressure relief cover is communicated with the upper port of the material guiding assembly; the baffle curtain is installed in the material guiding assembly, and its upper end is fixed on the rear edge of the lower port of the pressure relief cover, its lower end hangs on the upper surface of the belt, and its left and right ends are abutted against the inner side walls of the material guiding assembly.

4. The unpowered pressure relief dust removal system for belt transfer points according to claim 2, characterized in that, The dust removal mechanism includes a control box, a cable, a water inlet pipe, a water level sensor, a first overflow pipe, a quick docking head, and a second overflow pipe. A water tank is arranged on the movable trolley. The lower end of the vertical air duct leads into the water tank of a corresponding movable trolley; the cable and the water inlet pipe are attached to the front side of the vertical air duct, and the lower ends of the cable and the water inlet pipe lead into the water tank and extend forward at the upper ends and are connected to the control box; the water level sensor is installed at the lower end of the cable; the water inlet pipe is also communicated with the air duct cleaning mechanism; one end of the first overflow pipe is communicated with the upper end of the movable trolley, and the other end of the first overflow pipe is communicated with the second overflow pipe through the quick docking head.

5. The non-powered pressure relief and dust removal system for a belt transfer point according to claim 4, wherein, A limit fixing block is installed on the movable trolley. The limit fixing block includes a support rod and a limit piece. The upper end of the support rod is installed at the bottom of the movable trolley, and the lower end of the support rod is fixedly connected to the limit piece.

6. The unpowered pressure relief dust removal system for belt transfer points according to claim 3, characterized in that, The connection control mechanism includes a control valve, two inclined plates arranged in parallel, and a flap. The control valve includes a movable rod, a driving rod, and a connecting plate. The two inclined plates are installed on the front and rear inner side walls of the inclined air duct and are located above the upper port of the pressure relief cover. The flap is located in the inclined air duct, and its front and rear sides are respectively movably connected to the two inclined plates. The connecting plate is located on the outer side wall of the inclined air duct. The movable rod is respectively hinged to one end of the connecting plate, one end of the flap, and the upper ends of the two inclined plates. The driving rod is installed at the other end of the connecting plate and is located above the flap. A first limiting plate is provided at the upper end of the flap, and a second limiting plate is provided at the lower end of the flap. When closed, the first limiting plate and the second limiting plate exactly abut against the upper and lower inner side walls of the inclined air duct.

7. The non-powered pressure relief dust removal system for the belt transfer point according to claim 4, characterized in that, The air duct cleaning mechanism includes a cleaning pipe, a solenoid valve, and a nozzle. The nozzle is located at the high end of the inclined air duct. The cleaning pipe is attached to the side wall of the vertical air duct near the high end of the inclined air duct, and the lower end of the cleaning pipe is communicated with the water inlet pipe. The upper end of the cleaning pipe is inserted into the corner air duct near the high end of the inclined air duct and is communicated with the nozzle.

8. The unpowered pressure relief dust removal system for the belt transfer point according to claim 7, characterized in that, The nozzle is a flat nozzle, and the flat nozzle is installed at the junction of the upper port of the high end of the inclined air duct and the upper port of the corner air duct.

9. The a non-powered pressure relief dust removal system for a belt transfer point according to claim 2, characterized in that, The power-free pressure relief and dust removal device further includes at least one inspection mechanism. The inspection mechanism includes an inspection door and a handle. An opening matching the inspection door is provided at the upper end of the inclined air duct. The inspection door is arranged in the opening, and one side of the inspection door is hinged to the corresponding side of the opening. The handle is provided on the inspection door.

10. A power-free pressure relief and dust removal system for a belt transfer point according to claim 1, characterized in that, The maintenance platform includes a ladder, a safety cage, a guardrail, a fixed platform, and a kick plate. The lower end of the ladder is fixed to the ground, and the upper end of the ladder is fixedly connected to the outer side of the fixed platform. The safety cage surrounds one side of the fixed platform close to the ladder. The guardrail surrounds the front side, inner side, and rear side of the fixed platform and is fixedly connected to the side adjacent to the safety cage. The kick plate is installed at the connection of the fixed platform, the safety cage, and the guardrail. A groove matching the upper cover plate and the chute of the material guiding assembly is provided in the middle of the fixed platform. The chute and the upper cover plate of the material guiding assembly are exactly clamped in the groove.

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