Self-cleaning plate-type preheater

Abstract

The utility model relates to the technical field of plate type pre-heaters, and discloses a self-cleaning plate type pre-heater which comprises a plate type pre-heater body, and an air inlet pipe and an air outlet pipe are arranged on one side of the plate type pre-heater body. The filter screen is fixedly connected into the air inlet pipe, the end face, away from the plate type preheater body, of the filter screen is fixedly connected with a center shaft, a rotating rod is rotationally matched with the center shaft, a fan is fixedly connected to the rotating rod, a connecting plate is further fixedly connected to the rotating rod, a first scraper is fixedly connected to the connecting plate, and the first scraper abuts against the filter screen. A second sliding block is in sliding fit with the outer side wall of the connecting plate, a second scraping plate is fixedly connected to the second sliding block, and the second scraping plate abuts against the side wall of the first scraping plate; according to the plate-type preheater, the cleanliness of gas entering the plate-type preheater body can be improved, so that the plate-type preheater body is kept in a stable operation state.

Description

Technical Field

[0001] The utility model relates to the technical field of plate-type preheaters, in particular to a self-cleaning plate-type preheater. Background Art

[0002] Plate preheater, also known as plate heat exchanger, is a high-efficiency heat exchanger made of a series of stacked metal sheets with a certain corrugated shape. Thin rectangular channels are formed between the various plates, and heat exchange is carried out through the plates.

[0003] An existing Chinese patent discloses a clean plate preheater with publication number CN210664072U. By setting a vibrating foil, when the gas passes through the heat exchange plate, the vibrating foil will be blown to generate vibration. The vibrating foil on each heat exchange plate will vibrate at the same time to shake off the dust, and the electrostatic dust will be adsorbed on the outside of the conductive rod through the conductive effect of the conductive rod.

[0004] However, during use, this prior art solution has no filtering measures at the vents and the gaps between the heat exchange plates are small. Consequently, a large amount of larger dust and impurities in the gas will accumulate and clog the gaps between the heat exchange plates during long-term operation, and vibration cannot effectively remove the larger impurities. Utility Model Content

[0005] The purpose of the utility model is to provide a self-cleaning plate preheater, aiming to solve or improve at least one of the above technical problems.

[0006] To achieve the above objectives, the present invention provides the following solutions: The present invention provides a self-cleaning plate preheater, comprising:

[0007] A plate-type preheater body, wherein an air inlet pipe and an air outlet pipe are provided on one side of the plate-type preheater body;

[0008] A filter screen is fixedly connected to the air inlet pipe. The end surface of the filter screen facing away from the plate preheater body is fixedly connected to a central shaft. A rotating rod is rotatably engaged with the central shaft. A fan is fixedly connected to the rotating rod. A connecting plate is also fixedly connected to the connecting plate. A first scraper is fixedly connected to the connecting plate. The first scraper abuts against the filter screen.

[0009] The outer side wall of the connecting plate is slidably fitted with a second slider, the second slider is fixedly connected to a second scraper, and the second scraper abuts against the side wall of the first scraper;

[0010] A first chamber is provided in the connecting plate, a driving mechanism is provided in the first chamber, the driving mechanism is connected to a first slider in a transmission manner, the first slider slides in cooperation with the inner wall of the first chamber, and the first slider and the second slider are magnetically attracted to each other through a cathode magnet and an anode magnet.

[0011] Optionally, the driving mechanism includes a reciprocating screw rotatably connected in the first chamber, one end of the reciprocating screw is coupled to the central shaft through a gear assembly, a reciprocating nut is coupled to the reciprocating screw, and the reciprocating nut is fixedly connected to the first slider.

[0012] Optionally, the gear assembly includes a spur gear, which is rotatably connected to the side wall of the first chamber, and the spur gear is meshed with a spur gear ring, which is fixedly sleeved on the center shaft, and the spur gear is also fixedly connected to a first bevel gear, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixedly connected to the reciprocating screw.

[0013] Optionally, a second chamber for accommodating the central shaft and the spur gear ring is opened on the rotating rod, and the second chamber is communicated with the first chamber.

[0014] Optionally, the second chamber and the central axis are rotatably engaged via a bearing seat.

[0015] Optionally, a first sliding groove is provided on the inner side wall of the first chamber, and the first sliding block is slidably fitted in the first sliding groove.

[0016] Optionally, a second sliding groove is provided on the outer side wall of the connecting plate, and the second sliding block is slidably fitted in the second sliding groove.

[0017] Optionally, sewage discharge grooves are respectively provided at both ends of the second chute, and the end surfaces of the two sewage discharge grooves facing each other are both inclined surfaces.

[0018] The utility model discloses the following technical effects: a filter is arranged in the air intake pipe of a plate preheater body, and a central axis and a rotating rod rotatably fitted on the central axis and having a fan are arranged on the filter, the fan is driven to rotate when the gas flows, and first the filter filters the dust and impurities with larger particles, and when the fan rotates, the rotating rod and the first scraper are driven to rotate synchronously, and the filter is cleaned by the first scraper to avoid serious blockage of the filter, and at the same time, the first slider is driven to slide along the first chamber by the driving mechanism, and the second slider and the second scraper are driven to slide synchronously according to the principle of synchronous movement of the cathode magnet and the anode magnet, so that the second scraper cleans the dust and impurities attached to the first scraper, so that the first scraper maintains an efficient cleaning effect, and further the filter maintains a good filtering effect, thereby improving the cleanliness of the gas entering the inside of the plate preheater body, and keeping the plate preheater body in a stable operating state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

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

[0021] Figure 2 This is a schematic diagram of the internal structure of the air intake pipe of the present invention;

[0022] Figure 3 for Figure 2 A partial enlarged view of middle A;

[0023] Figure 4 This is a cross-sectional view of the rotating rod of the present utility model;

[0024] Figure 5 It is a cross-sectional view of the connecting plate, the first slider and the second slider of the present invention.

[0025] In the figure: 1. Plate preheater body; 2. Air inlet pipe; 3. Air outlet pipe; 4. Filter; 5. Central shaft; 6. Rotating rod; 7. Fan; 8. Connecting plate; 9. First scraper; 10. Second slider; 11. Second scraper; 12. First chamber; 13. First slider; 14. Cathode magnet; 15. Anode magnet; 16. Reciprocating screw; 17. Reciprocating nut; 18. Spur gear; 19. Spur ring gear; 20. First bevel gear; 21. Second bevel gear; 22. Second chamber; 23. Bearing seat; 24. First chute; 25. Second chute; 26. Drain groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Reference Figure 1-Figure 5 The utility model provides a self-cleaning plate preheater, comprising:

[0029] A plate preheater body 1, with an air inlet pipe 2 and an air outlet pipe 3 provided on one side of the plate preheater body 1;

[0030] The filter screen 4 is fixedly connected to the air inlet pipe 2. The end surface of the filter screen 4 facing away from the plate preheater body 1 is fixedly connected to the central shaft 5. The central shaft 5 is rotatably matched with a rotating rod 6. The rotating rod 6 is fixedly connected to a fan 7. The rotating rod 6 is also fixedly connected to a connecting plate 8. The connecting plate 8 is fixedly connected to a first scraper 9. The first scraper 9 abuts against the filter screen 4.

[0031] The outer wall of the connecting plate 8 is slidably fitted with a second slider 10, and the second scraper 11 is fixedly connected to the second slider 10, and the second scraper 11 abuts against the side wall of the first scraper 9;

[0032] A first chamber 12 is provided in the connecting plate 8, and a driving mechanism is provided in the first chamber 12. The driving mechanism is transmission-connected to a first slider 13. The first slider 13 slides in cooperation with the inner wall of the first chamber 12. The first slider 13 and the second slider 10 are magnetically attracted to each other through the cathode magnet 14 and the anode magnet 15.

[0033] A filter 4 is provided in the air inlet pipe 2 of the plate preheater body 1, and a central shaft 5 and a rotating rod 6 with a fan 7 rotatably engaged with the central shaft 5 are provided on the filter 4. When the gas flows, the fan 7 is driven to rotate. First, the filter 4 filters the dust and impurities with larger particles. When the fan 7 rotates, the rotating rod 6 and the first scraper 9 are driven to rotate synchronously. The first scraper 9 cleans the filter 4 to prevent serious blockage of the filter 4. At the same time, the first slider 13 is driven by the driving mechanism to slide along the first chamber 12. The cathode magnet 14 and the anode magnet 15 are magnetically attracted and move synchronously, which drives the second slider 10 and the second scraper 11 to slide synchronously. The second scraper 11 cleans the dust and impurities attached to the first scraper 9, so that the first scraper 9 maintains an efficient cleaning effect, and the filter 4 maintains a good filtering effect, thereby improving the cleanliness of the gas entering the plate preheater body 1 and maintaining a stable operating state of the plate preheater body 1.

[0034] To further optimize the solution, the driving mechanism includes a reciprocating screw 16 rotatably connected to the first chamber 12, one end of the reciprocating screw 16 is transmission-coordinated with the central shaft 5 through a gear assembly, and the reciprocating screw 16 is transmission-coordinated with a reciprocating nut 17, and the reciprocating nut 17 is fixedly connected to the first slider 13; the gear assembly includes a spur gear 18, which is rotatably connected to the side wall of the first chamber 12, and the spur gear 18 is meshed with a spur ring gear 19, which is fixedly sleeved on the central shaft 5, and the spur gear 18 is also fixedly connected to a first bevel gear 20, which is meshed with a second bevel gear 21, and the second bevel gear 21 is fixedly connected to the reciprocating screw 16; a second chamber 22 for accommodating the central shaft 5 and the spur ring gear 19 is opened on the rotating rod 6, and the second chamber 22 is communicated with the first chamber 12.

[0035] The rotating rod 6 and the connecting plate 8 rotate along the central axis 5, and the central axis 5 remains fixed. Through the meshing state of the spur gear 18 and the spur ring gear 19, the spur gear 18 rotates while moving circumferentially around the spur ring gear 19, thereby driving the first bevel gear 20 to rotate, and the first bevel gear 20 drives the second bevel gear 21 and the reciprocating screw 16 to rotate, and then through the transmission cooperation between the reciprocating screw 16 and the reciprocating nut 17, the reciprocating nut 17 drives the first slider 13 to achieve reciprocating movement, and then the first slider 13 drives the second slider 10 and the second scraper 11 to move.

[0036] As a further optimization solution, the second chamber 22 and the central shaft 5 are rotationally engaged via a bearing seat 23, preferably a sealed bearing.

[0037] As a further optimization solution, a first sliding groove 24 is provided on the inner wall of the first chamber 12 , and the first slider 13 is slidably fitted in the first sliding groove 24 . The first sliding groove 24 and the first slider 13 are preferably a dovetail structure.

[0038] As a further optimization solution, a second sliding groove 25 is provided on the outer side wall of the connecting plate 8, and the second slider 10 is slidably fitted in the second sliding groove 25. The second sliding groove 25 and the second slider 10 are preferably dovetail structures.

[0039] To further optimize the solution, drainage grooves 26 are respectively provided at both ends of the second chute 25, and the end faces of the two drainage grooves 26 that are opposite to each other are both inclined surfaces. When the second slider 10 slides, the dust and impurities in the second chute 25 can be pushed out and discharged through the drainage grooves 26, thereby avoiding the accumulation of dust and impurities in the second chute 25.

[0040] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A self-cleaning plate preheater, characterized in that: include: A plate-type preheater body (1), wherein an air inlet pipe (2) and an air outlet pipe (3) are arranged on one side of the plate-type preheater body (1); A filter screen (4), the filter screen (4) being fixedly connected in the air inlet pipe (2), the end surface of the filter screen (4) facing away from the plate preheater body (1) being fixedly connected to a central axis (5), a rotating rod (6) being rotatably matched on the central axis (5), a fan (7) being fixedly connected to the rotating rod (6), a connecting plate (8) being fixedly connected to the connecting plate (8), a first scraper (9) being fixedly connected to the filter screen (4), the first scraper (9) being in contact with the filter screen (4); The outer side wall of the connecting plate (8) is slidably matched with a second sliding block (10), the second sliding block (10) is fixedly connected with a second scraper (11), and the second scraper (11) abuts against the side wall of the first scraper (9); A first chamber (12) is provided in the connecting plate (8), a driving mechanism is provided in the first chamber (12), the driving mechanism is transmission-connected to a first slider (13), the first slider (13) is slidably engaged with an inner wall of the first chamber (12), and the first slider (13) and the second slider (10) are magnetically attracted to each other via a cathode magnet (14) and an anode magnet (15).

2. A self-cleaning plate preheater according to claim 1, characterized in that: The driving mechanism comprises a reciprocating screw (16) rotatably connected in the first chamber (12), one end of the reciprocating screw (16) being in transmission cooperation with the central shaft (5) via a gear assembly, a reciprocating nut (17) being in transmission cooperation with the reciprocating screw (16), and the reciprocating nut (17) being fixedly connected to the first slider (13).

3. A self-cleaning plate preheater according to claim 2, characterized in that: The gear assembly comprises a spur gear (18), the spur gear (18) being rotatably connected to the side wall of the first chamber (12), the spur gear (18) being meshedly connected to a spur gear ring (19), the spur gear ring (19) being fixedly sleeved on the central shaft (5), the spur gear (18) being also fixedly connected to a first bevel gear (20), the first bevel gear (20) being meshedly connected to a second bevel gear (21), and the second bevel gear (21) being fixedly connected to the reciprocating screw rod (16).

4. A self-cleaning plate preheater according to claim 3, characterized in that: The rotating rod (6) is provided with a second chamber (22) for accommodating the central shaft (5) and the spur gear ring (19), and the second chamber (22) is communicated with the first chamber (12).

5. A self-cleaning plate preheater according to claim 4, characterized in that: The second chamber (22) and the central axis (5) are rotationally matched via a bearing seat (23).

6. A self-cleaning plate preheater according to claim 1, characterized in that: The inner wall of the first chamber (12) is provided with a first sliding groove (24), and the first sliding block (13) is slidably fitted in the first sliding groove (24).

7. A self-cleaning plate preheater according to claim 1, characterized in that: The outer side wall of the connecting plate (8) is provided with a second sliding groove (25), and the second sliding block (10) is slidably fitted in the second sliding groove (25).

8. A self-cleaning plate preheater according to claim 7, characterized in that: Both ends of the second chute (25) are provided with sewage discharge grooves (26), and the end surfaces of the two sewage discharge grooves (26) that are away from each other are both inclined surfaces.

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