Dust removal device for coal conveying of thermal power plant

Abstract

The invention relates to the technical field of thermal power plant dust removal, and discloses a thermal power plant coal conveying dust removal device which comprises a conveying unit, and the conveying unit comprises a supporting assembly and a belt arranged on the supporting assembly; the water conveying unit comprises a water conveying main pipe and a water conveying pipe mounted on the water conveying main pipe; the water spraying unit comprises a power assembly arranged on the inner ring of one end of the water conveying pipe, a bearing assembly arranged below one end of the water conveying pipe and a water outlet assembly arranged below the bearing assembly. The device has the beneficial effects that through mutual cooperation of the water conveying pipe and the bearing assembly and control over the adjusting part, the bearing assembly can be conveniently and rapidly taken down and cleaned, workers can conveniently and rapidly install the bearing assembly, time consumption is reduced, and therefore dust diffusion is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal in thermal power plants, in particular to a dust removal device for coal transportation in thermal power plants. Background Art

[0002] A thermal power plant is a plant that uses combustibles as fuel to produce electricity. Its basic production process is: when the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] In the process of coal-fired power generation in thermal power plants, coal needs to be transported to the combustion chamber. Most existing technologies use belts to transport coal. During the transportation process, a lot of dust will be generated, and the generated dust will also float in the air, polluting the working environment of the staff, and in serious cases, it will affect the health of the staff.

[0004] A common method for dealing with dust in the prior art is to set a nozzle above the belt to clean the escaped coal ash. However, if the nozzle is not opened for a long time, it will be blocked by the floating coal ash. The existing nozzle is not convenient to disassemble, or the disassembly time is long, causing dust to spread. Summary of the invention

[0005] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] The purpose of the present invention is to provide a dust removal device for coal transportation in a thermal power plant, which can solve the problem that the nozzle will be blocked by floating coal ash if it is not opened for a long time, and the existing nozzle is inconvenient to disassemble or the disassembly time is long, causing dust diffusion.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a dust removal device for coal transportation in a thermal power plant, comprising a conveying unit, the conveying unit comprising a supporting assembly and a belt arranged on the supporting assembly; a water delivery unit, the water delivery unit comprising a water delivery mother pipe and a water transport pipe installed on the water delivery mother pipe; a water spraying unit, the water spraying unit comprising a power assembly arranged on the inner circle of one end of the water transport pipe, a bearing assembly arranged below one end of the water transport pipe, and a water outlet assembly arranged below the bearing assembly.

[0008] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the support assembly includes a base plate, two first support plates symmetrically fixed at both ends of the base plate, and two second support plates laterally fixed to the top of the base plate, a first rolling roller is rotatably connected between the two second support plates, a second rolling roller is rotatably connected between the first support plate and the second support plate, and the belt is adapted to the first rolling roller and the second rolling roller.

[0009] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, one end of the water transport pipe is connected to the water transport mother pipe, the other end of the water transport pipe is located above the belt, a card slot is provided on the outer ring of the end of the water transport pipe located above the belt, an electric valve and a manual valve are installed on the water transport pipe, and the electric valve is connected to the electrical signal of the external coal flow detection device.

[0010] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the power assembly includes a mounting frame fixed to the inner ring of a water transport pipe, a rotating rod passing through and rotating on the mounting frame, and a propeller fixed to the top of the rotating rod, and a first groove is provided at the bottom of the rotating rod.

[0011] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the bearing assembly includes an outer cylinder arranged at one end of a water transport pipe, a plurality of second grooves evenly arranged on the outer cylinder, balls arranged in the second grooves, and an adjusting member arranged on the outer ring of the outer cylinder, and the inner ring diameter of the outer cylinder is larger than the outer ring diameter of the water transport pipe.

[0012] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the inner ring of the bottom end of the outer cylinder is fixedly connected with a connecting cylinder, the inner ring of the connecting cylinder is provided with a third groove, the inner ring diameter of the connecting cylinder is the same as the inner ring diameter of the water transport pipe, and a sealing ring is provided on the contact surface between the top end of the connecting cylinder and the water transport pipe.

[0013] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the third groove is divided into a first part, a second part and a third part, the opening depth of the first part is greater than the opening depth of the second part, and the third part is a dividing point.

[0014] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the adjusting member includes a fixed ring fixed to the outer ring at the bottom end of the outer cylinder, an extrusion ring arranged above the fixed ring, and a first spring arranged between the fixed ring and the extrusion ring, the two ends of the first spring are respectively fixed to the top of the fixed ring and the bottom of the extrusion ring; the inner ring of the extrusion ring is divided into a second contact surface and a first contact surface, the distance between the second contact surface and the outer ring of the outer cylinder is greater than the distance between the first contact surface and the outer ring of the outer cylinder, and the inner ring of the extrusion ring cooperates with the ball.

[0015] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the water outlet assembly includes a movable cylinder arranged on the inner ring of the connecting cylinder, a water dividing plate fixed to the bottom end of the movable cylinder, and multiple nozzles evenly arranged on the bottom and outer ring of the water dividing plate, and the inner ring of the water dividing plate is provided with multiple arc grooves, and the arc grooves are connected to the nozzles.

[0016] As a preferred solution of the dust removal device for coal transportation in a thermal power plant described in the present invention, the inner ring of the movable cylinder is fixedly connected to a fixed plate, the top of the fixed plate is fixedly connected to a clamping rod, the clamping rod is slidably matched with the first groove, and a fourth groove penetrating the movable cylinder is opened at one end of the fixed plate, a second spring and a fixed rod are arranged inside the fourth groove, two ends of the second spring are respectively fixed to one side of the fourth groove and one side of the fixed rod, and the fixed rod is slidably matched with the third groove.

[0017] The beneficial effects of the present invention are as follows: the present invention facilitates the rapid removal and cleaning of the bearing assembly through the mutual cooperation between the water transport pipe and the bearing assembly and through the control of the adjusting part, and also facilitates the rapid installation of the bearing assembly by the staff, thereby reducing time consumption and thus reducing the spread of dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 This is a schematic diagram of the structure of the dust removal device for coal transportation in a thermal power plant.

[0020] Figure 2 A schematic diagram of the structure of the support assembly.

[0021] Figure 3 It is a schematic diagram of the installation structure of the water delivery unit and the water spray unit.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the water spray unit.

[0023] Figure 5 This is an exploded view of the water spray unit.

[0024] Figure 6 This is a schematic diagram of the structure of the power component.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the load-bearing component.

[0026] Figure 8 This is an expanded view of the connecting tube.

[0027] Fig. 9 This is a schematic diagram of a side sectional structure of a water outlet component.

[0028] Fig.10 Another schematic diagram of the side cross-sectional structure of the water outlet component.

[0029] Fig.11 It is a schematic diagram of the top view and cross-section structure of the power component. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figures 1 to 9 , is the first embodiment of the present invention, which provides a dust removal device for coal transportation in a thermal power plant, which includes a conveying unit 100, the conveying unit 100 includes a support assembly 101 and a belt 102 arranged on the support assembly 101; a water delivery unit 200, the water delivery unit 200 includes a water delivery mother pipe 201 and a water transport pipe 202 installed on the water delivery mother pipe 201; a water spray unit 300, the water spray unit 300 includes a power assembly 301 arranged on the inner circle of one end of the water transport pipe 202, a bearing assembly 302 arranged below one end of the water transport pipe 202, and a water outlet assembly 303 arranged below the bearing assembly 302. The conveying unit 100 is used to transport coal, and the water delivery unit 200 is arranged on one side of the conveying unit 100, one end of which is located directly above the conveying unit 100, and can cooperate with the water spray unit 300 to clean the coal ash escaping from the conveying unit 100 to prevent the coal ash from floating.

[0035] Specifically, the support assembly 101 includes a base plate 101a, two first support plates 101b symmetrically fixed at both ends of the base plate 101a, and two second support plates 101c fixed laterally to the top of the base plate 101a, a first rolling roller 101d is rotatably connected between the two second support plates 101c, a second rolling roller 101e is rotatably connected between the first support plate 101b and the second support plate 101c, and the belt 102 is adapted to the first rolling roller 101d and the second rolling roller 101e.

[0036] The bottom plate 101a, the first support plate 101b and the second support plate 101c provide stable support for the first rolling roller 101d and the second rolling roller 101e. At the same time, the two second rolling rollers 101e are symmetrically tilted to prevent large-scale sliding during coal transportation.

[0037] Specifically, one end of the water transport pipe 202 is connected to the water supply mother pipe 201, and the other end of the water transport pipe 202 is located above the belt 102. The outer circle of the end of the water transport pipe 202 located above the belt 102 is symmetrically and evenly provided with slots 202a. An electric valve 202c and a manual valve 202b are installed on the water transport pipe 202. The electric valve 202c is connected to the electrical signal of the external coal flow detection device.

[0038] The water supply mother pipe 201 is connected to the external water supply pipe to ensure normal water supply. The electric valve 202c is connected to the external coal flow detection device. The electric valve 202c is opened or closed by the coal flow signal detected by the coal flow detection device. The electric valve 202c is automatically opened when the coal flow is detected. After opening, the water flow is controlled by a manual valve according to the size of the coal ash and the dryness and wetness of the transported coal. On the one hand, it can prevent the coal from being too wet, and on the other hand, it can save water resources. The coal flow detection device is a prior art and will not be described in detail here.

[0039] When in use, the stable transportation of the fuel coal is achieved through the cooperation of the support component 101 and the belt 102. The water supply mother pipe 201 is connected to the external water supply pipeline, and the water can be transported to the position of the water spray unit 300 through the water transport pipe 202. When the water flows into the bearing component 302 through one end of the water transport pipe 202, the impact of the water flow on the power component 301 will drive the power component 301 to move and drive the water outlet component 303 to rotate. When the water outlet component 303 rotates, it cooperates with the bearing component 302 to move up and down, thereby changing the range of the water mist sprayed from the water outlet component 303, performing large-scale dust removal, and ensuring a clean environment.

[0040] Example 2

[0041] Reference Figure 4 , Figure 7, which is the second embodiment of the present invention, and is different from the first embodiment in that: it also includes a bearing assembly 302 including an outer cylinder 302a arranged at one end of the water transport pipe 202, a plurality of second grooves 302b evenly arranged on the outer cylinder 302a, balls 302c arranged in the second grooves 302b, and an adjusting member 302f arranged on the outer ring of the outer cylinder 302a, and the inner ring diameter of the outer cylinder 302a is larger than the outer ring diameter of the water transport pipe 202.

[0042] The second groove 302b can provide a space for the ball 302c to be placed, and the ball 302c is matched with the slot 202a, ensuring the installation between the outer cylinder 302a and the water transport pipe 202, and the outer cylinder 302a can be quickly installed and removed through the mutual cooperation with the adjusting member 302f. Figure 4 The water spray assembly 303 is directly connected to the bottom of the outer cylinder 302a. Through the rapid installation and disassembly of the outer cylinder 302a, it is convenient for the staff to clean the blocked water spray assembly 303 and replace the damaged water spray assembly 303.

[0043] The lower surface of the second groove 302b is set as an inclined surface, and the inclination direction is from the inner ring of the outer cylinder 302a to the outer ring of the outer cylinder 302a. This makes it possible that when the ball 302c is not subjected to the pressure applied by the adjusting member 302, the ball 302c will roll toward the outer ring of the outer cylinder 302a due to the influence of the inclination of the lower surface of the second groove 302b. When rolling a certain distance, the ball 302c will leave the range of the slot 202a, making it convenient to remove the outer cylinder 302a. The ball 302c is blocked by the adjusting member 302f and will not leave the range of the second groove 302b, thereby preventing the ball 302c from falling and affecting the normal operation of the device.

[0044] Specifically, the adjusting member 302f includes a fixing ring 302f-1 fixed to the outer ring at the bottom end of the outer cylinder 302a, an extrusion ring 302f-2 arranged above the fixing ring 302f-1, and a first spring 302f-3 arranged between the fixing ring 302f-1 and the extrusion ring 302f-2, the two ends of the first spring 302f-3 are respectively fixed to the top of the fixing ring 302f-1 and the bottom of the extrusion ring 302f-2; the inner ring of the extrusion ring 302f-2 is divided into a second contact surface K and a first contact surface L, the distance between the second contact surface K and the outer ring of the outer cylinder 302a is greater than the distance between the first contact surface L and the outer ring of the outer cylinder 302a, and the inner ring of the extrusion ring 302f-2 cooperates with the ball 302c.

[0045] By setting the extrusion ring 302f-2, the position of the ball 302c in the second groove 302b can be changed to realize the installation between the outer cylinder 302a and the water transport pipe 202, and when the ball 302c is respectively at the second contact surface K and the first contact surface L, there are two states. When the ball 302c cooperates with the second contact surface K, the outer cylinder 302a and the water transport pipe 202 are in a detachable state, and when the ball 302c cooperates with the first contact surface L, the outer cylinder 302a and the water transport pipe 202 are in a fixed state.

[0046] When in use, the ball 302c can be squeezed by the setting of the squeezing ring 302f-2, so that it can move in the second groove 302b, thereby realizing the engagement and disassembly between the outer cylinder 302a and the water transport pipe 202. When the first contact surface L in the squeezing ring 302f-2 contacts the ball 302c, the ball 302c will be squeezed into the groove 202a, so that the outer cylinder 302a can be fixed on one end of the water transport pipe 202 and the stability of the connection can be ensured; when the squeezing ring 302f-2 is pulled downward, the second contact surface K in the squeezing ring 302f-2 is aligned with the ball 302c, and the ball 302c will roll outward along the lower surface of the second groove 302b, and give the ball 302c enough space to move. At this time, the ball 302c is out of the range of the groove 202a, and the outer cylinder 302a and the water spray assembly 303 can be removed.

[0047] Example 3

[0048] Reference Figure 5 to Figure 7 and Fig. 9 , which is the third embodiment of the present invention, and is different from the second embodiment in that it also includes a power assembly 301 including a mounting frame 301a fixed to the inner circle of the water transport pipe 202, a rotating rod 301b passing through and rotating on the mounting frame 301a, and a propeller 301c fixed to the top of the rotating rod 301b, and a first groove 301d is provided at the bottom of the rotating rod 301b.

[0049] The water flow through the propeller 301c can drive the propeller 301c to rotate and drive the rotating rod 301b to rotate. The mounting frame 301a provides stable support for the rotating rod 301b and the propeller 301c. Through the setting of the first groove 301d, it can cooperate with the water outlet component 303 to ensure that the water outlet component 303 can operate normally.

[0050] Specifically, the inner circle of the bottom end of the outer cylinder 302a is fixedly connected to a connecting cylinder 302d, the inner circle of the connecting cylinder 302d is provided with a third groove 302e, the inner circle diameter of the connecting cylinder 302d is the same as the inner circle diameter of the water transport pipe 202, and a sealing ring is provided on the contact surface between the top end of the connecting cylinder 302d and the water transport pipe 202.

[0051] For this embodiment, a sealing gasket is provided at the connection between the connecting tube 302d and the water transport pipe 202 to ensure the airtightness of the connection between the outer tube 302a and the water transport pipe 202, thereby preventing water leakage and waste. The ball 302c can move in the second groove 302b and, by controlling the adjusting member 302f, it can engage with the card slot 202a, thereby ensuring a stable connection between the outer tube 302a and the water transport pipe 202.

[0052] The third groove 302e is in the shape of a ring, and there is a certain height difference between the first part M and the second part N in the third groove 302e, so that the movable cylinder 303a can be driven to move up and down. Through the setting of the third groove 302e, when the rotating rod 301b drives the water outlet assembly 303 to rotate, and through the cooperation between the third groove 302e and the water outlet assembly 303, the water outlet assembly 303 can be driven to move up and down, thereby changing the height of the water mist spraying, thereby changing the coverage of the water mist. When the water mist covers a large area, it ensures the cleaning of the escaped dust, and when the water mist covers a small area, it will not affect the staff's patrol of the belt 102, and will not cause any impact on the staff.

[0053] Specifically, the water outlet assembly 303 includes a movable cylinder 303a arranged on the inner circle of the connecting cylinder 302d, a water distribution plate 303b fixed to the bottom end of the movable cylinder 303a, and multiple nozzles 303d evenly arranged on the bottom and outer circle of the water distribution plate 303b. The inner circle of the water distribution plate 303b is provided with multiple arc grooves 303c, and the arc grooves 303c are connected to the nozzles 303d.

[0054] Furthermore, the inner ring of the movable cylinder 303a is fixedly connected to a fixed plate 303e, the top of the fixed plate 303e is fixedly connected to a clamping rod 303f, the clamping rod 303f is slidably matched with the first groove 301d, and the outer ring of the movable cylinder 303a is fixedly connected to a fixed rod 303i.

[0055] For this embodiment, the top end of the movable cylinder 303a extends into the inner ring of the outer cylinder 302a, and the distance that the movable cylinder 303a moves up and down is the same as the distance that the top end of the movable cylinder 303a moves to the top end of the connecting cylinder 302d. The normal movement of the movable cylinder 303a ensures the normal operation of the device, and a piston ring is provided on the top outer ring of the movable cylinder 303a. The piston ring contacts with the inner ring of the outer cylinder 302a to achieve sealing. The piston ring can also be connected by a sealed bearing, so that the movable cylinder 303a will not be affected when it moves and rotates.

[0056] The arrangement of the arc groove 303c and the nozzle 303d drives the water flow to rotate when the movable cylinder 303a rotates. The arrangement of the arc groove 303c conforms to the rotation direction of the water flow and is sprayed from the nozzle 303d. The sprayed water mist can cover a larger area and clean the floating coal ash.

[0057] Through the setting of the fixed plate 303e and the clamping rod 303f, it can cooperate with the first groove 301d to ensure that the rotating rod 301b can drive the movable cylinder 303a to rotate. Through the cooperation between the fixed rod 303i and the third groove 302e, when the movable cylinder 303a rotates, the fixed rod 303i slides in the third groove 302e, driving the movable cylinder 303a to move up and down, thereby changing the coverage range of the water mist spraying and achieving the purpose of cleaning.

[0058] When in use, when water flows through the rotating rod 301b, it drives the propeller 301c to rotate, and the rotation of the propeller 301c drives the rotating rod 301b to rotate. The rotation of the rotating rod 301b can drive the movable cylinder 303a to rotate through the cooperation between the first groove 301d and the clamping rod 303f. When the movable cylinder 303a rotates, the fixed rod 303i slides in the third groove 302e, driving the movable cylinder 303a to move up and down.

[0059] Example 4

[0060] Reference Figure 7 and Figure 8 , which is the fourth embodiment of the present invention, is different from the third embodiment in that it also includes a third groove 302e which is divided into a first part M, a second part N and a third part P, the opening depth of the first part M is greater than the opening depth of the second part N, and the third part P is a dividing point.

[0061] According to the attached Figure 8 As shown, the opening depth of the first part M in the third groove 302e is greater than the opening depth of the second part N, and the third part P is the dividing point, that is, when going from one side of the first part M downward through the third part P to the position of the second part N, the opening depth gradually becomes shallower, and when going from the second part N upward through the other side through the third part P to the first part M, the opening depth gradually deepens, so that the movement trajectory of the fixing rod 303i on the third groove 302e is annular.

[0062] When in use, as the movable cylinder 303a rotates, the fixed rod 303i of the outer ring of the movable cylinder 303a slides along the third groove 302e, and there is friction at the contact portion between the fixed rod 303i and the third groove 302e, so that the friction between the two can be changed by cooperating with the fixed rod 303i at different positions of the third groove 302e with different opening depths, thereby changing the rotation speed of the movable cylinder 303a. When the rotation speed of the movable cylinder 303a changes, the centrifugal force generated by its rotation will also change. At this time, the distance at which the water mist is sprayed from the nozzle 303d will also change accordingly, and in conjunction with the rise and fall of the movable cylinder 303a, the coverage of the water mist spraying can be better changed.

[0063] Example 5

[0064] Reference Fig.10 , which is the fifth embodiment of the present invention, and is different from the fourth embodiment in that: it also includes a fourth groove 303g that penetrates the movable cylinder 303a at one end of the fixing plate 303e, a second spring 303h and a fixing rod 303i are arranged inside the fourth groove 303g, two ends of the second spring 303h are respectively fixed to one side of the fourth groove 303g and one side of the fixing rod 303i, and the fixing rod 303i is slidably matched with the third groove 302e.

[0065] By opening the fourth groove 303g, a movable space can be provided for the fixing rod 303i, and by setting the second spring 303h, an outward thrust can be given to the fixing rod 303i, so that when the fixing rod 303i slides in the third groove 302e, one end of the fixing rod 303i is always in contact with one side of the third groove 302e, so that friction is generated by the contact between the two, and the friction between the fixing rod 303i and the third groove 302e can be changed through the different opening depths of the third groove 302e and the mutual cooperation between the fixing rod 303i and the second spring 303h, thereby changing the rotation speed of the movable cylinder 303a, and the change of the rotation speed of the movable cylinder 303a can change the centrifugal force generated in the movable cylinder 303a, thereby changing the pressure of the water sprayed from the nozzle 303d, and finally changing the range of the sprayed water mist.

[0066] When in use, the fixing rod 303i slides in the third groove 302e. When the fixing rod 303i moves from the first part M of the third groove 302e to the second part N through the third part P, the fixing rod 303i is squeezed to move the fixing rod 303i into the fourth groove 303g. At the same time, the thrust given to the fixing rod 303i by the second spring 303h increases. At this time, the friction between the fixing rod 303i and the third groove 302e increases, thereby generating a certain resistance to the rotation of the movable cylinder 303a. At this time, during the downward movement of the movable cylinder 303a, due to the fixing rod 303i 3i and the third groove 302e, the rotation speed of the movable cylinder 303a will slow down. At this time, the pressure of the water flow sprayed from the nozzle 303d will become smaller, the spraying length will become shorter, and the range covered by the water mist will also become smaller, which is convenient for the staff to pass through. In addition, when the fixed rod 303i moves from the second part N of the third groove 302e through the third part P on the other side to the first part M, the friction between the fixed rod 303i and the third groove 302e will gradually decrease, and the movable cylinder 303a will also move upward, which can increase the spraying length of the water mist, increase the coverage range, and ensure the cleaning of dust.

[0067] In summary, when in use, the water spray unit 300 needs to be checked first. If it is blocked or damaged, it needs to be cleaned or replaced. When disassembling the outer cylinder 302a, it is only necessary to move the extrusion ring 302f-2 downward. When the second contact surface K in the extrusion ring 302f-2 contacts the ball 302c, the outer cylinder 302a can be removed. After removal, it can be cleaned or replaced with a new water spray unit 300. After installation, during the coal transportation by the belt 102, when dust is generated, the valve on the water transport pipe 202 is opened. At this time, water flows through the water transport pipe 202 to the water spray unit 300, and drives the power component 301 to operate. The rotation of the power component 301 can drive the water outlet component 303 to rotate. Through the cooperation of the water outlet component 303 and the bearing component 302, not only the rotation speed of the movable cylinder 303a can be changed, but also the height of the movable cylinder 303a can be changed, thereby realizing a change in the water mist coverage range and ensuring the cleaning of dust.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A dust removal device for coal transportation in a thermal power plant, characterized in that: include, A conveying unit (100), the conveying unit (100) comprising a supporting assembly (101) and a belt (102) arranged on the supporting assembly (101); A water delivery unit (200), the water delivery unit (200) comprising a water delivery mother pipe (201) and a water transport pipe (202) installed on the water delivery mother pipe (201); A water spray unit (300) comprising a power assembly (301) arranged at the inner circle of one end of a water transport pipe (202), a bearing assembly (302) arranged below one end of the water transport pipe (202), and a water outlet assembly (303) arranged below the bearing assembly (302).

2. The dust removal device for coal transportation in a thermal power plant according to claim 1, characterized in that: The support assembly (101) comprises a base plate (101a), two first support plates (101b) symmetrically fixed at both ends of the base plate (101a), and two second support plates (101c) fixed laterally to the top of the base plate (101a); a first rolling roller (101d) is rotatably connected between the two second support plates (101c); a second rolling roller (101e) is rotatably connected between the first support plate (101b) and the second support plate (101c); and the belt (102) is adapted to the first rolling roller (101d) and the second rolling roller (101e).

3. The dust removal device for coal transportation in a thermal power plant according to claim 2, characterized in that: One end of the water transport pipe (202) is connected to the water delivery mother pipe (201), and the other end of the water transport pipe (202) is located above the belt (102). A slot (202a) is provided on the outer ring of the end of the water transport pipe (202) located above the belt (102). An electric valve (202c) and a manual valve (202b) are installed on the water transport pipe (202), and the electric valve (202c) is connected to an external coal flow detection device via an electrical signal.

4. The dust removal device for coal transportation in a thermal power plant according to claim 3, characterized in that: The power assembly (301) comprises a mounting frame (301a) fixed to the inner circle of the water transport pipe (202), a rotating rod (301b) penetrating and rotating on the mounting frame (301a), and a propeller (301c) fixed to the top of the rotating rod (301b), and a first groove (301d) is provided at the bottom of the rotating rod (301b).

5. The dust removal device for coal transportation in a thermal power plant according to claim 4, characterized in that: The bearing assembly (302) comprises an outer cylinder (302a) arranged at one end of the water transport pipe (202), a plurality of second grooves (302b) evenly arranged on the outer cylinder (302a), balls (302c) arranged in the second grooves (302b), and an adjusting member (302f) arranged on the outer ring of the outer cylinder (302a); the inner ring diameter of the outer cylinder (302a) is larger than the outer ring diameter of the water transport pipe (202).

6. The dust removal device for coal transportation in a thermal power plant according to claim 5, characterized in that: The inner ring of the bottom end of the outer cylinder (302a) is fixedly connected to a connecting cylinder (302d), the inner ring of the connecting cylinder (302d) is provided with a third groove (302e), the inner ring diameter of the connecting cylinder (302d) is the same as the inner ring diameter of the water transport pipe (202), and a sealing ring is provided at the contact surface between the top end of the connecting cylinder (302d) and the water transport pipe (202).

7. The dust removal device for coal transportation in a thermal power plant according to claim 6, characterized in that: The third groove (302e) is divided into a first part (M), a second part (N) and a third part (P), the opening depth of the first part (M) is greater than the opening depth of the second part (N), and the third part (P) is a dividing point.

8. The dust removal device for coal transportation in a thermal power plant according to claim 7, characterized in that: The adjusting member (302f) comprises a fixing ring (302f-1) fixed to the outer ring of the bottom end of the outer cylinder (302a), an extrusion ring (302f-2) arranged above the fixing ring (302f-1), and a first spring (302f-3) arranged between the fixing ring (302f-1) and the extrusion ring (302f-2), wherein two ends of the first spring (302f-3) are respectively fixed to the top of the fixing ring (302f-1) and the bottom of the extrusion ring (302f-2); The inner ring of the extrusion ring (302f-2) is divided into a second contact surface (K) and a first contact surface (L); the distance between the second contact surface (K) and the outer ring of the outer cylinder (302a) is greater than the distance between the first contact surface (L) and the outer ring of the outer cylinder (302a); the inner ring of the extrusion ring (302f-2) cooperates with the ball (302c).

9. The dust removal device for coal transportation in a thermal power plant according to claim 8, characterized in that: The water outlet assembly (303) comprises a movable cylinder (303a) arranged on the inner circle of the connecting cylinder (302d), a water distribution plate (303b) fixed to the bottom end of the movable cylinder (303a), and a plurality of nozzles (303d) evenly arranged on the bottom and outer circle of the water distribution plate (303b); the inner circle of the water distribution plate (303b) is provided with a plurality of arc grooves (303c), and the arc grooves (303c) are connected to the nozzles (303d).

10. The dust removal device for coal transportation in a thermal power plant according to claim 9, characterized in that: The inner ring of the movable cylinder (303a) is fixedly connected to a fixed plate (303e), and the top of the fixed plate (303e) is fixedly connected to a clamping rod (303f), and the clamping rod (303f) is slidably matched with the first groove (301d). One end of the fixed plate (303e) is provided with a fourth groove (303g) that penetrates the movable cylinder (303a), and a second spring (303h) and a fixed rod (303i) are arranged inside the fourth groove (303g), and the two ends of the second spring (303h) are respectively fixed to one side of the fourth groove (303g) and one side of the fixed rod (303i), and the fixed rod (303i) is slidably matched with the third groove (302e).

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