Anti-blocking dredging device for raw coal bunker of thermal power plant

Abstract

The utility model relates to the technical field of anti-blocking dredging devices, and discloses a thermal power plant raw coal bunker anti-blocking dredging device which comprises a raw coal bunker body, an upper fixing ring and a lower fixing ring are fixedly installed on the upper side face and the lower side face of the raw coal bunker body respectively, and a movable seat matched with the raw coal bunker body is arranged between the upper fixing ring and the lower fixing ring. The face, facing the raw coal bunker body, of the movable base is provided with two symmetrical vibration exciter bodies capable of sliding on the movable base, the upper fixing ring is provided with a first driving unit used for driving the movable base to move along the side face of the raw coal bunker body, and the movable base is provided with a second driving unit used for driving the two vibration exciter bodies to move in the face-to-face or back-to-back mode. According to the raw coal bunker, the vibration exciter body can be driven to rotate and move up and down along the side face of the raw coal bunker body through cooperation of the first driving unit and the second driving unit, so that the vibration exciter body can vibrate the side face of the raw coal bunker body in all directions, and then the anti-blocking and dredging effects on the raw coal bunker body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-blocking and dredging devices, in particular to an anti-blocking and dredging device for a raw coal bunker of a thermal power plant. Background Art

[0002] The main components of the raw coal bunker in a traditional thermal power plant are a cylindrical bunker body and a lower conical hopper. When affected by weather such as rainfall or when high-moisture coal is added, the coal has strong viscosity and is easily blocked at the outlet of the raw coal bunker, affecting the stable operation of the boiler.

[0003] In order to prevent the coal bunker outlet from being blocked, the prior art has made many improvements to the anti-blocking and unblocking device for the raw coal bunker of a thermal power plant. For example, the patent with the patent announcement number CN220975285U discloses an anti-blocking and unblocking device for the raw coal bunker of a thermal power plant, including a raw coal bunker, a dredging mechanism is arranged on the side wall of the raw coal bunker, an auxiliary mechanism is installed inside the raw coal bunker, an adsorption mechanism is installed on the side wall of the raw coal bunker, and a material guide mechanism is arranged below the raw coal bunker. By setting the dredging mechanism, it is convenient to dredge the raw coal blocked in the raw coal bunker of the thermal power plant, which is conducive to reducing the blockage of the raw coal bunker of the thermal power plant; at the same time, the material guide mechanism is arranged, which is not only convenient for guiding the raw coal to be transported or unblocked, but also can prevent the raw coal to be transported or unblocked from being blocked during transportation; by setting the auxiliary mechanism, it is convenient to spray the raw coal blocked and accumulated inside the raw coal bunker with high pressure, which is conducive to unblocking the blocked raw coal; at the same time, the adsorption mechanism is arranged, which is convenient for adsorbing and filtering the high-pressure gas sprayed by the auxiliary mechanism or the dust generated by the unblocking, which is conducive to protecting the surrounding environment.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] In the above-mentioned comparative document, multiple pneumatic vibrating hammers are arranged on the side of the raw coal bin, and the pneumatic vibrating hammers are used to vibrate the side of the raw coal bin to achieve the effect of preventing blockage and unblocking. However, in the existing situation, the volume of the raw coal bin is large, and the effective vibration range of the pneumatic vibrating hammers is limited. Therefore, when the pneumatic vibrating hammers vibrate the raw coal bin, there may be vibration dead angles, which reduces the effect of preventing blockage and unblocking on the raw coal bin. Therefore, this field urgently needs to improve the anti-blocking and unblocking device of the raw coal bin of thermal power plants, so as to solve the defects of the existing technology. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a device for preventing and dredging raw coal bunkers in thermal power plants. The vibrator body can rotate and move up and down along the side of the raw coal bunker body, so that the vibrator body can vibrate the side of the raw coal bunker body in all directions, thereby improving the effect of preventing and dredging the raw coal bunker body.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for preventing and clearing the raw coal bunker of a thermal power plant, comprising a raw coal bunker body, an upper fixing ring and a lower fixing ring are respectively fixedly installed on the upper and lower sides of the raw coal bunker body, a movable seat adapted to the raw coal bunker body is arranged between the upper fixing ring and the lower fixing ring, two symmetrical exciter bodies that can slide on the movable seat are arranged on the side of the movable seat facing the raw coal bunker body, one end of the exciter body is abutted against the raw coal bunker body, a first driving unit is arranged on the upper fixing ring for driving the movable seat to move along the side of the raw coal bunker body, a second driving unit is arranged on the movable seat for driving the two exciter bodies to move toward or away from each other, and a spacing adjustment unit is arranged on one side of the movable seat for adjusting the spacing between the movable seat and the raw coal bunker body.

[0008] Preferably, the first driving unit includes two first sliding seats respectively slidably connected to an upper fixing ring and a lower fixing ring, one side of the upper fixing ring and the lower fixing ring are provided with a first sliding groove adapted to the first sliding seat, the two first sliding seats are fixedly mounted with a supporting plate at the outer ends, a first driving motor is fixedly mounted on one side of one of the supporting plates, a gear is fixedly mounted on the output end of the first driving motor, a tooth groove meshing with the gear is provided on the side of the upper fixing ring, and the movable seat is arranged between the two supporting plates.

[0009] Preferably, the second driving unit includes a second sliding seat fixedly installed at one end of each exciter body, a second sliding groove adapted to the second sliding seat is opened on one side of the moving seat, a bidirectional screw rod is rotatably connected in the second sliding groove, the bidirectional screw rod passes through the second sliding seat and is threadedly connected to the second sliding seat, and a second driving motor with an output end fixedly installed at one end of the moving seat and fixedly installed at one end of the bidirectional screw rod.

[0010] Preferably, the spacing adjustment unit includes connecting plates fixedly connected to both ends of the moving seat, and the ends of the two connecting plates away from the moving seat are fixedly connected to the third sliding seat. A third sliding groove adapted to the third sliding seat is opened on one side of the bearing plate, and a driving screw is rotatably connected in the third sliding groove. The driving screw passes through the third sliding seat and is threadedly connected to the third sliding seat. A fixing plate is fixedly connected between the two bearing plates, and a third driving motor is fixedly installed on the fixing plate. The third driving motor is used to simultaneously drive the two driving screws to rotate.

[0011] Preferably, the ends of the two driving screws pass through the bearing plate, and the side surfaces of the two driving screws located at the outside and the output end of the third driving motor are fixedly mounted with matching transmission wheels, and a transmission belt for transmission is sleeved between the side surfaces of the two transmission wheels.

[0012] Preferably, the first sliding grooves are respectively provided on the upper side of the upper fixing ring and the lower side of the lower fixing ring, the inner side walls of the first sliding grooves are penetrated with a clearance opening adapted to the first sliding seat, and the bearing plate is fixedly mounted to one end of the first sliding seat by a fastener.

[0013] Preferably, a plurality of balls are embedded in the lower side surfaces of the two first sliding seats, and the side surfaces of the balls abut against the lower side walls of the first sliding grooves.

[0014] In view of the shortcomings of the prior art, the utility model provides a device for preventing and dredging raw coal bunkers in thermal power plants, which overcomes the shortcomings of the prior art. The beneficial effects of the utility model are:

[0015] 1. In the utility model, through the cooperation of the first drive unit and the second drive unit, the vibration exciter body can be driven to rotate and move up and down along the side of the raw coal bin body, so that the vibration exciter body can vibrate the side of the raw coal bin body in all directions, thereby improving the effect of preventing blockage and unblocking the raw coal bin body.

[0016] 2. In the utility model, by setting a spacing adjustment unit, the spacing between the movable seat and the side surface of the raw coal bin body can be adjusted by the third driving motor, which is suitable for installation of different exciter bodies, thereby improving the application range of the overall device.

[0017] 3. In the present invention, by providing the clearance opening, the first sliding seat is inserted into the first sliding groove through the clearance opening, which is convenient for the installation of the first sliding seat and also convenient for the disassembly and maintenance of the first sliding seat at a later stage.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model when viewed from the side;

[0022] Figure 3 It is a schematic structural diagram of the overall cross-section of the utility model;

[0023] Figure 4 for Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 5 for Figure 2 The enlarged structural diagram at B in the middle;

[0025] Figure 6 for Figure 3 The enlarged structural diagram at C in the middle;

[0026] Figure 7 for Figure 3 Enlarged structural diagram at D in the middle.

[0027] In the figure: 1. raw coal bin body; 2. upper fixed ring; 3. lower fixed ring; 4. moving seat; 5. exciter body; 6. first drive unit; 7. second drive unit; 8. spacing adjustment unit; 9. first sliding seat; 10. first sliding groove; 11. bearing plate; 12. first drive motor; 13. gear; 14. tooth groove; 15. second drive motor; 16. second sliding seat; 17. second sliding groove; 18. bidirectional screw rod; 19. connecting plate; 20. fixed plate; 21. third sliding seat; 22. third sliding groove; 23. driving screw rod; 24. third drive motor; 25. transmission wheel; 26. transmission belt; 27. clearance port; 28. ball bearing. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Embodiment 1

[0030] See also Figure 1-Figure 7A device for preventing and dredging raw coal bunkers in thermal power plants comprises a raw coal bunker body 1, an upper fixing ring 2 and a lower fixing ring 3 are fixedly installed on the upper and lower sides of the raw coal bunker body 1, a moving seat 4 adapted to the raw coal bunker body 1 is arranged between the upper fixing ring 2 and the lower fixing ring 3, two symmetrical exciter bodies 5 that can slide on the moving seat 4 are arranged on the side of the moving seat 4 facing the raw coal bunker body 1, one end of the exciter body 5 abuts against the raw coal bunker body 1, a first driving unit 6 for driving the moving seat 4 to move along the side of the raw coal bunker body 1 is arranged on the upper fixing ring 2, and a second driving unit 7 for driving the two exciter bodies 5 to move toward or away from each other is arranged on the moving seat 4. A spacing adjustment unit 8 for adjusting the spacing between the movable seat 4 and the raw coal bin body 1 is provided on one side of the seat 4. The first driving unit 6 includes two first sliding seats 9 respectively slidably connected to the upper fixed ring 2 and the lower fixed ring 3. The upper fixed ring 2 and the lower fixed ring 3 are both provided with a first sliding groove 10 adapted to the first sliding seat 9. The ends of the two first sliding seats 9 located on the outside are fixedly installed with a bearing plate 11. A first driving motor 12 is fixedly installed on one side of the bearing plate 11. A gear 13 is fixedly installed on the output end of the first driving motor 12. A tooth groove 14 meshing with the gear 13 is provided on the side of the upper fixed ring 2. The movable seat 4 is arranged between the two bearing plates 11. The second driving unit 7 includes a second sliding seat 16 fixedly mounted on one end of each exciter body 5, a second sliding groove 17 adapted to the second sliding seat 16 is opened on one side of the moving seat 4, a bidirectional screw 18 is rotatably connected in the second sliding groove 17, the bidirectional screw 18 passes through the second sliding seat 16 and is threadedly connected to the second sliding seat 16, a second driving motor 15 with an output end fixedly mounted on one end of the moving seat 4 and an end of the bidirectional screw 18 is fixedly mounted, the spacing adjustment unit 8 includes a connecting plate 19 fixedly connected to both ends of the moving seat 4, the ends of the two connecting plates 19 away from the moving seat 4 are fixedly connected to the third sliding seat 21, and a connecting plate 11 is opened on one side to be connected to the third sliding seat The movable seat 21 is adapted to the third sliding groove 22, and a driving screw 23 is rotatably connected in the third sliding groove 22. The driving screw 23 passes through the third sliding seat 21 and is threadedly connected to the third sliding seat 21. A fixed plate 20 is fixedly connected between the two bearing plates 11, and a third driving motor 24 is fixedly installed on the fixed plate 20. The third driving motor 24 is used to simultaneously drive the two driving screws 23 to rotate. The ends of the two driving screws 23 both pass through the bearing plate 11, and the side surfaces of one end of the two driving screws 23 located on the outside and the output end of the third driving motor 24 are fixedly installed with adapted transmission wheels 25, and a transmission belt 26 for transmission is sleeved between the sides of the two transmission wheels 25.

[0031] The specific implementation method in this embodiment is as follows: the upper fixing ring 2 and the lower fixing ring 3 are fixedly installed on the upper and lower sides of the raw coal bin body 1 by welding or fasteners. When the raw coal bin body 1 needs to unload, the vibrator body 5 is started to vibrate the raw coal bin body 1 to achieve the effect of preventing blockage and dredging. At the same time, the first drive motor 12 is started, and the output end of the first drive motor 12 drives the gear 13 to rotate. The gear 13 is engaged with the tooth groove 14, thereby driving the first drive motor 12 to move along the side of the raw coal bin body 1 and driving the moving seat 4 to move. At the same time, the first sliding seat 9 slides in the first sliding groove 10 to limit the moving trajectory of the moving seat 4. At the same time, the second drive motor 15 is started, and the output end of the second drive motor 15 drives the bidirectional screw rod 18 to rotate. When the bidirectional screw rod 18 rotates, it drives the second sliding seat 16 to move in the second sliding groove 17. The thread teeth on the side of the bidirectional screw rod 18 are opposite and symmetrical. The two second sliding seats 16 move toward or away from each other, driving the vibrator body 5 to move up and down. It can move up, down, left and right along the side of the raw coal bin body 1, and then can vibrate any position of the side of the raw coal bin body 1 to prevent vibration dead angles when the raw coal bin body 1 is vibrated. At the same time, the above-mentioned movable seat 4 can be set to multiple to improve the anti-blocking and dredging effect of the raw coal bin body 1. The lengths of the exciter bodies 5 of different sizes are different. When the exciter bodies 5 of different lengths need to be installed, the distance between the movable seat 4 and the raw coal bin body 1 needs to be adjusted. When the distance between the movable seat 4 and the raw coal bin body 1 needs to be adjusted, by starting the third drive motor 24, the output end of the third drive motor 24 drives a transmission wheel 25 to rotate, and the transmission wheel 25 drives the other two transmission wheels 25 to rotate through the transmission belt 26. The corresponding transmission wheel 25 drives the corresponding driving screw 23 to rotate. When the driving screw 23 rotates, it drives the third sliding seat 21 to slide in the third sliding groove 22, and then the distance between the movable seat 4 and the raw coal bin body 1 is adjusted to improve the applicability of the overall device.

[0032] Among them, all the above-mentioned motors and the exciter body 5 can be purchased on the market. The exciter body 5 includes but is not limited to a pneumatic vibrating hammer. If a pneumatic vibrating hammer is used, it can be a structure with product model LXQC2-50-FAB, which is a mature technology and has been fully disclosed, so it is not repeated in the specification. All the above-mentioned motors are equipped with power connection lines, and they are electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power lines, and the main controller can be a conventional known device such as a computer that plays a control role.

[0033] Embodiment 2

[0034] See also Figure 5This embodiment includes the above-mentioned embodiment, which further includes: the first sliding groove 10 is respectively opened on the upper side surface of the upper fixing ring 2 and the lower side surface of the lower fixing ring 3, and the inner side walls of the first sliding groove 10 are penetrated by a clearance opening 27 adapted to the first sliding seat 9, and the bearing plate 11 is fixedly installed with one end of the first sliding seat 9 by a fastener.

[0035] Specific implementation method in this embodiment: when installing the movable seat 4, first insert the two first sliding seats 9 into the corresponding first sliding grooves 10 through the clearance openings 27, and fix the supporting plate 11 and the first sliding seat 9 with fasteners to facilitate the installation and subsequent disassembly and maintenance of the first sliding seat 9.

[0036] Implementation Three

[0037] See also Figure 6 and Figure 7 This embodiment includes all the above embodiments, and further includes: a plurality of balls 28 are embedded in the lower side surfaces of the two first sliding seats 9, and the side surfaces of the balls 28 are against the lower side walls of the first sliding grooves 10.

[0038] The specific implementation method in this embodiment is as follows: by disposing the ball 28 , the friction coefficient between the first sliding seat 9 and the inner wall of the first sliding groove 10 is reduced when the first sliding seat 9 slides, thereby reducing the power consumption of the first driving motor 12 .

[0039] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for preventing and dredging raw coal bunkers in thermal power plants, comprising a raw coal bunker body (1), characterized in that: An upper fixing ring (2) and a lower fixing ring (3) are fixedly mounted on the upper and lower sides of the raw coal bin body (1), respectively; a movable seat (4) adapted to the raw coal bin body (1) is arranged between the upper fixing ring (2) and the lower fixing ring (3); two symmetrical exciter bodies (5) capable of sliding on the movable seat (4) are arranged on the side of the movable seat (4) facing the raw coal bin body (1); one end of the exciter body (5) abuts against the raw coal bin body (1); a first driving unit (6) for driving the movable seat (4) to move along the side of the raw coal bin body (1) is arranged on the upper fixing ring (2); a second driving unit (7) for driving the two exciter bodies (5) to move toward or away from each other is arranged on the movable seat (4); and a spacing adjustment unit (8) for adjusting the spacing between the movable seat (4) and the raw coal bin body (1) is arranged on one side of the movable seat (4).

2. The device for preventing and dredging raw coal bunker in a thermal power plant according to claim 1 is characterized in that: The first driving unit (6) comprises two first sliding seats (9) respectively connected in a sliding manner to an upper fixing ring (2) and a lower fixing ring (3); one side of the upper fixing ring (2) and the lower fixing ring (3) are provided with a first sliding groove (10) adapted to the first sliding seat (9); the ends of the two first sliding seats (9) located outside are fixedly mounted with a bearing plate (11); one side of the bearing plate (11) is fixedly mounted with a first driving motor (12); the output end of the first driving motor (12) is fixedly mounted with a gear (13); the side of the upper fixing ring (2) is provided with a tooth groove (14) meshing with the gear (13); and the moving seat (4) is arranged between the two bearing plates (11).

3. The device for preventing and dredging raw coal bunker in a thermal power plant according to claim 1, characterized in that: The second driving unit (7) comprises a second sliding seat (16) fixedly mounted on one end of each exciter body (5); a second sliding groove (17) adapted to the second sliding seat (16) is provided on one side of the moving seat (4); a bidirectional screw rod (18) is rotatably connected in the second sliding groove (17); the bidirectional screw rod (18) passes through the second sliding seat (16) and is threadedly connected to the second sliding seat (16); a second driving motor (15) having an output end fixedly mounted on one end of the moving seat (4) and fixedly mounted on one end of the bidirectional screw rod (18).

4. The device for preventing and dredging raw coal bunker in a thermal power plant according to claim 2, characterized in that: The spacing adjustment unit (8) comprises a connecting plate (19) fixedly connected to both ends of the moving seat (4); one end of the two connecting plates (19) away from the moving seat (4) is fixedly connected to the third sliding seat (21); one side of the bearing plate (11) is provided with a third sliding groove (22) adapted to the third sliding seat (21); a driving screw (23) is rotatably connected in the third sliding groove (22); the driving screw (23) passes through the third sliding seat (21) and is threadedly connected to the third sliding seat (21); a fixing plate (20) is fixedly connected between the two bearing plates (11); a third driving motor (24) is fixedly mounted on the fixing plate (20); the third driving motor (24) is used to simultaneously drive the two driving screws (23) to rotate.

5. The device for preventing and dredging raw coal bunker in a thermal power plant according to claim 4, characterized in that: The ends of the two driving screw rods (23) penetrate the bearing plate (11), and the side surfaces of one end of the two driving screw rods (23) located outside and the output end of the third driving motor (24) are fixedly mounted with matching transmission wheels (25), and a transmission belt (26) for transmission is sleeved between the side surfaces of the two transmission wheels (25).

6. The device for preventing and dredging raw coal bunker in a thermal power plant according to claim 2, characterized in that: The first sliding groove (10) is respectively provided on the upper side surface of the upper fixing ring (2) and the lower side surface of the lower fixing ring (3); the inner side wall of the first sliding groove (10) is penetrated by a clearance opening (27) adapted to the first sliding seat (9); the bearing plate (11) is fixedly mounted on one end of the first sliding seat (9) by a fastener.

7. The device for preventing and dredging raw coal bunker in a thermal power plant according to claim 2, characterized in that: A plurality of balls (28) are embedded in the lower side surfaces of the two first sliding seats (9), and the side surfaces of the balls (28) abut against the lower side walls of the first sliding grooves (10).

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