Biomass boiler bag filter upper box door cover quick closing and clamping mechanism

Abstract

The present invention relates to the technical field of clamping devices, and in particular to a quick-closing clamping mechanism for a door cover of an upper box body of a biomass boiler bag dust collector, comprising an outer box body of the biomass boiler bag dust collector and a door cover used in conjunction with the outer box body, and is characterized in that: a clamping mechanism for clamping the door cover is provided at one end of the outer box body close to the door cover, the clamping mechanism comprises an eccentric shaft mechanism and a wedge-shaped slider following the movement of the eccentric shaft mechanism, a fixing plate is provided on the door cover, a square hole for placing the wedge-shaped slider is provided on the fixing plate, a structure is formed in which the wedge-shaped slider is inserted into the square hole under the push of the eccentric shaft mechanism to fix the door cover, the problem that the door cover of the upper box body of the bag dust collector in the prior art is inconvenient to open and is easily caused to be poorly sealed is solved, and the technical field of clamping devices has good prospects.

Description

Technical Field

[0001] The invention relates to the technical field of closing and pressing devices, and in particular to a quick closing and pressing mechanism for an upper box door cover of a biomass boiler bag filter. Background Art

[0002] Bag filter is a dry dust filtering device, which is widely used for flue gas purification in coal-fired boilers, waste incinerators and other industrial boilers. At present, the door cover on the bag filter is mostly fixed directly by many screws and nuts. It is inconvenient to open when the bag needs to be repaired or replaced, which affects the efficiency. At the same time, the traditional screws and nuts will loosen after a long installation time, making it easy for dust to leak out. The door cover locking device of the existing bag filter upper box only has a locking effect on the door cover of the bag filter, but it is easy to cause a loose seal, affecting the working performance of the bag filter, and the operation is not convenient and fast enough. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a quick closing and clamping mechanism for the upper box door cover of the biomass boiler bag dust collector, which solves the problem that the door cover of the upper box of the bag dust collector in the prior art is inconvenient to open and easily causes poor sealing.

[0004] The technical solution is:

[0005] The invention discloses a quick closing clamping mechanism for the door cover of the biomass boiler bag dust collector, comprising an outer box body of the biomass boiler bag dust collector, and a door cover used in conjunction with the outer box body. The end of the outer box body close to the door cover is provided with a clamping mechanism for clamping the door cover, and the clamping mechanism comprises an eccentric shaft mechanism and a wedge-shaped slider following the movement of the eccentric shaft mechanism. The door cover is provided with a fixing plate, and the fixing plate is provided with a square hole for placing the wedge-shaped slider, so as to form a structure in which the wedge-shaped slider is placed in the square hole under the push of the eccentric shaft mechanism to fix the door cover.

[0006] Preferably, the clamping mechanism further comprises a mounting seat, the mounting seat is fixedly connected to a side of the outer box body close to the door cover, the mounting seat is provided with a slider mounting hole for placing a wedge-shaped slider, the slider mounting hole comprises a circular hole portion and a square hole portion, and the diameter of the circular hole portion is greater than the diagonal length of the square hole portion;

[0007] The mounting seat is provided with a first groove for placing the fixing plate, so that after the door cover is closed, the fixing plate enters the first groove; the first groove is arranged perpendicular to the slider mounting hole and communicates with the square hole portion of the slider mounting hole;

[0008] The mounting seat is provided with a second groove for accommodating an eccentric shaft mechanism. The eccentric shaft mechanism comprises an eccentric shaft. The eccentric shaft is rotatably connected in the second groove and is in contact with and cooperates with the wedge-shaped sliding block.

[0009] Preferably, the clamping mechanism includes a protective cover, which includes a horizontal baffle and a vertical baffle. The vertical baffle is provided with a drainage hole, and the vertical baffle is fixedly connected to one end of the outer box body close to the mounting seat. The horizontal baffle is arranged perpendicular to the vertical baffle and the opposite ends thereof are fixedly connected to form a structure in which the protective cover wraps the mounting seat and the eccentric shaft mechanism.

[0010] Preferably, the wedge-shaped slider includes a spring fixing rod, on which a spring is sleeved, and the diameter of the spring is larger than the diameter of the circular hole portion of the slider mounting hole; when the door cover is closed, the eccentric shaft rotates a set angle to push the wedge-shaped slider out of the slider mounting hole and into the square hole to fix the door cover; when the eccentric shaft rotates a set angle again, the wedge-shaped slider exits the square hole under the action of the spring and retracts into the slider mounting hole.

[0011] Preferably, the eccentric shaft includes a first eccentric shaft, a second eccentric shaft, a third eccentric shaft and a fourth eccentric shaft, and the first eccentric shaft, the second eccentric shaft, the third eccentric shaft and the fourth eccentric shaft are arranged in a rectangular structure, the opposite ends of the first eccentric shaft and the second eccentric shaft are respectively provided with bevel gears meshing with each other, the opposite ends of the second eccentric shaft and the third eccentric shaft are respectively provided with bevel gears meshing with each other, the opposite ends of the third eccentric shaft and the fourth eccentric shaft are respectively provided with bevel gears meshing with each other, and a driving mechanism is provided at one end of the first eccentric shaft close to the fourth eccentric shaft; a structure is formed in which the driving mechanism drives the first eccentric shaft to rotate, the first eccentric shaft drives the second eccentric shaft to rotate through the bevel gear, the second eccentric shaft drives the third eccentric shaft to rotate, and the third eccentric shaft drives the fourth eccentric shaft to rotate.

[0012] Preferably, the driving mechanism includes a rotating rod, a ratchet and a pawl, the ratchet is provided with an extension sleeve, the extension sleeve is provided with a through hole for placing the rotating rod, the ratchet is sleeved on one end of the first eccentric shaft close to the fourth eccentric shaft, the first eccentric shaft is provided with a groove for placing the rotating rod, the pawl is hinged on the mounting seat through a pin shaft, so that the rotating rod passes through the through hole of the extension sleeve and is inserted into the groove of the first eccentric shaft, the rotating rod drives the ratchet and the first eccentric shaft to rotate, and the pawl prevents the ratchet and the first eccentric shaft from reversing.

[0013] Preferably, an extension rod for rotating the pawl is extended from one end of the pawl close to the pin shaft, the extension rod is longer than the pawl, and its cross-sectional area gradually increases along its extension direction, forming a structure in which the pawl is always engaged with the ratchet wheel under the action of the gravity of the extension rod.

[0014] The beneficial effects of the present invention are:

[0015] 1. The clamping mechanism of the present invention can realize synchronous downward clamping of the door cover around the periphery through the linkage of the eccentric shaft, bevel gear and wedge-shaped slider, so as to achieve a better sealing effect;

[0016] 2. The driving mechanism of the present invention adopts a rotating rod, which can easily realize the closing, pressing and opening of the door cover in cooperation with the ratchet and the pawl. The structure is simple and convenient;

[0017] 3. The provision of the protective cover of the present invention prevents outdoor parts from being rusted by rain and protects people from being pinched by rotating gears, thereby improving safety and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of the present invention.

[0019] Figure 2 It is a first exploded view of the present invention.

[0020] Figure 3 It is a second exploded view of the present invention.

[0021] Figure 4 It is a three-dimensional view of the wedge-shaped slider of the present invention.

[0022] Figure 5 It is a perspective view of the eccentric shaft of the present invention.

[0023] Figure 6 It is a front view of the clamping mechanism of the present invention.

[0024] Figure 7 It is a partial cross-sectional view of the clamping mechanism of the present invention.

[0025] Figure 8 yes Figure 2 Enlarged view of point D in the middle.

[0026] Fig. 9 yes Figure 3 Enlarged view of point B in the middle.

[0027] Fig.10 yes Figure 7 Enlarged view of point C in the middle.

[0028] Among them: outer box body 1, door cover 2, rectangular plate 21, fixing plate 22, square hole 221, sealing gasket 23, clamping mechanism 3, wedge-shaped slider 31, spring fixing rod 311, spring 312, mounting seat 32, slider mounting hole 321, first groove 322, second groove 323, eccentric shaft mechanism 33, eccentric shaft 331, first eccentric shaft 3311, second eccentric shaft 3312, third eccentric shaft 3313, fourth eccentric shaft 3314, bevel gear 332, roller bearing 333, driving mechanism 34, rotating rod 341, ratchet 342, extension sleeve 3421, ratchet 343, extension rod 3431, shield 35, drainage hole 351. DETAILED DESCRIPTION

[0029] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0030] The quick closing and clamping mechanism of the upper box cover of the bag filter of the biomass boiler comprises an outer box 1 of the biomass boiler bag filter, and a door cover 2 used in conjunction with the outer box 1. The outer box 1 is provided with a clamping mechanism 3 for clamping the door cover 2 at one end close to the door cover 2. The clamping mechanism 3 comprises an eccentric shaft mechanism 33 and a wedge-shaped slider 31 moving with the eccentric shaft mechanism 33. The door cover 2 is provided with a fixing plate 22, and the fixing plate 22 is provided with a square hole 221 for placing the wedge-shaped slider 31, so that the wedge-shaped slider 31 is placed in the square hole 221 under the push of the eccentric shaft mechanism 33 to fix the door cover 2.

[0031] The clamping mechanism 3 includes a wedge-shaped slider 31, a mounting seat 32, an eccentric shaft mechanism 33, a driving mechanism 34 and a shield 35; the eccentric shaft mechanism 33 includes an eccentric shaft 331, a bevel gear 332, and a roller bearing 333; the eccentric shaft 331 includes a first eccentric shaft 3311, a second eccentric shaft 3312, a third eccentric shaft 3313, and a fourth eccentric shaft 3314; the driving mechanism 34 includes a rotating rod 341, a ratchet 342, and a pawl 343.

[0032] The door cover 2 includes a rectangular plate 21, and a fixing plate 22 is provided on one side of the rectangular plate 21 close to the outer box body 1. The fixing plate 22 is in an "L"-shaped structure, and its shorter side is welded to the side of the rectangular plate 21 close to the outer box body 1 as a whole. There are four fixing plates 22, and they are formed to adapt to the rectangular structure of the outer box body 1. A sealing gasket 23 is provided on one end of the inner wall of the fixing plate 22 close to the rectangular plate 21 to form a sealing structure, and a square hole 221 for placing a wedge-shaped slider 31 is opened on the L-shaped fixing plate 22.

[0033] When the door cover 2 is closed, the eccentric shaft 331 rotates to a set angle, pushing the wedge-shaped slider 31 to extend out of the slider mounting hole 321 and enter the square hole 221 to fix the door cover 2. At this time, the door cover 2 is clamped on the outer box body 1; when the eccentric shaft 331 rotates to a set angle again, the wedge-shaped slider 31 exits the square hole 221 and retracts into the slider mounting hole 321 under the action of the spring 312. At this time, the door cover 2 can be opened and closed freely.

[0034] The wedge-shaped slider 31 is used to clamp the door cover 2. The wedge-shaped slider 31 includes a spring fixing rod 311, a spring baffle is provided on the spring fixing rod 311, and a spring 312 is sleeved on the spring fixing rod 311. The diameter of the spring 312 is larger than the diameter of the circular hole portion of the slider mounting hole 321. The wedge-shaped slider 31 includes a quadrangular prism portion and a wedge-shaped portion. The cross section of the wedge-shaped portion is a right-angled triangle. The plane where the right-angled side of the wedge-shaped portion is located is parallel to the rectangular plate 21. When the door cover 2 is manually closed, the position of the square hole 221 provided on the fixing plate 22 does not exactly correspond to the wedge-shaped slider 31. The process of the wedge-shaped slider 31 entering the square hole 221 is from the tip of the wedge-shaped portion to the root of the wedge-shaped portion, and then to the quadrangular prism portion, and then gradually enters the square hole 221 in sequence. The door cover 2 is gradually compressed in this process.

[0035] The mounting seat 32 is welded to a side of the outer box body 1 close to the door cover 2, and a slider mounting hole 321 for placing the wedge-shaped slider 31 is provided on the mounting seat 32, and the slider mounting hole 321 includes a circular hole portion and a square hole portion, and the diameter of the circular hole portion is greater than the diagonal length of the square hole portion. When the wedge-shaped slider 31 is placed in the slider mounting hole 321, the spring 312 is stuck in the circular hole portion of the slider mounting hole 321 to ensure that the wedge-shaped slider 31 extends smoothly out of the slider mounting hole 321, and the spring 312 does not pass through the rectangular hole. When the clamping mechanism 3 is not working, the wedge-shaped slider 31 is located in the slider mounting hole 321.

[0036] The mounting seat 32 is provided with a first groove 322 for placing the fixing plate 22, and the first groove 322 is arranged perpendicular to the slider mounting hole 321 and is connected to the square hole portion of the slider mounting hole 321; the mounting seat 32 is provided with a second groove 323 for placing the eccentric shaft mechanism 33, and the eccentric shaft mechanism 33 includes an eccentric shaft 331, and roller bearings 333 for placing the eccentric shaft 331 are provided at both ends of the groove, and the eccentric shaft 331 is in contact with the wedge-shaped slider 31; the wedge-shaped slider 31 always maintains contact under the action of the spring 312.

[0037] When the door cover 2 is closed and the fixing plate 22 enters the first groove 322, the eccentric shaft 331 rotates to a set angle, and the highest point of the movement curve of the eccentric shaft 331 contacts the wedge-shaped slider 31, and the eccentric shaft 331 pushes the wedge-shaped slider 31 to extend out of the slider mounting hole 321 and enter the square hole 221; when the eccentric shaft 331 rotates to a set angle again, the lowest point of the movement curve of the eccentric shaft 331 contacts the wedge-shaped slider 31, and the wedge-shaped slider 31 exits the square hole 221 and retracts into the slider mounting hole 321 under the action of the spring 312.

[0038] In order to achieve synchronous downward pressing of the door cover 2 on all sides, at least two corresponding wedge-shaped sliding blocks 31 are provided on each side of the door cover 2 corresponding to the eccentric shaft 331 .

[0039] The eccentric shaft 331 includes a first eccentric shaft 3311, a second eccentric shaft 3312, a third eccentric shaft 3313, and a fourth eccentric shaft 3314. The first eccentric shaft 3311, the second eccentric shaft 3312, the third eccentric shaft 3313, and the fourth eccentric shaft 3314 are arranged in a rectangular structure. The opposite ends of the first eccentric shaft 3311 and the second eccentric shaft 3312 are respectively provided with mutually meshing bevel gears 332. The opposite ends of the second eccentric shaft 3312 and the third eccentric shaft 3313 are respectively provided with mutually meshing bevel gears 332. The opposite ends of the first eccentric shaft 3313 and the fourth eccentric shaft 3314 are respectively provided with bevel gears 332 that mesh with each other, and the end of the first eccentric shaft 3311 close to the fourth eccentric shaft 3314 is provided with a driving mechanism 34; the driving mechanism 34 drives the first eccentric shaft 3311 to rotate, the first eccentric shaft 3311 drives the second eccentric shaft 3312 to rotate through the bevel gear 332, the second eccentric shaft 3312 drives the third eccentric shaft 3313 to rotate, and the third eccentric shaft 3313 drives the fourth eccentric shaft 3314 to rotate, thereby ensuring that all wedge-shaped sliders 31 move synchronously.

[0040] The driving mechanism 34 includes a rotating rod 341, a ratchet 342, and a pawl 343. The ratchet 342 is provided with an extension sleeve 3421, and the extension sleeve 3421 is provided with a through hole for accommodating the rotating rod 341. The ratchet 342 is sleeved on one end of the first eccentric shaft 3311 close to the fourth eccentric shaft 3314. The first eccentric shaft 3311 is provided with a groove for accommodating the rotating rod 341. The pawl 343 is hinged on the first eccentric shaft 3311 through a pin. The mounting seat 32 is used in conjunction with the ratchet 342. The rotating rod 341 passes through the through hole of the extension sleeve 3421 and is inserted into the groove of the first eccentric shaft 3311. The rotating rod 341 and the first eccentric shaft 3311 are interference fit. When the staff manually rotates the rotating rod 341, the rotating rod 341 drives the ratchet 342 and the first eccentric shaft 3311 to rotate, and the pawl 343 prevents the ratchet 342 and the first eccentric shaft 3311 from reversing.

[0041] An extension rod 3431 for rotating the pawl 343 is provided at one end of the pawl 343 near the pin shaft. The extension rod 3431 is longer than the pawl 343, and its cross-sectional area gradually increases along its extension direction, so that its center of gravity is biased toward the end away from the pawl 343. With the pin shaft on the pawl 343 as a fulcrum, the pawl 343 is always engaged with the ratchet 342 under the action of the gravity of the extension rod 3431 by using the lever principle. The extension rod 3431 and the pawl 343 are respectively located on both sides of the hinge of the pawl 343, and the extension rod 3431 extends out of the shield 35 for easy operation. When the rotating rod 341 is rotated to the extreme position, the extension rod 3431 is rotated to set an angle to lift the end of the pawl 343 near the ratchet 342, and then the rotating rod 341 is rotated to reverse the ratchet 342 and the first eccentric shaft 3311 back to the initial position.

[0042] The shield 35 includes a horizontal baffle and a vertical baffle, the vertical baffle is provided with a drainage hole 351, the vertical baffle is fixedly connected to one end of the outer box 1 near the mounting seat 32 by bolts, the horizontal baffle is vertically arranged with the vertical baffle and the opposite ends thereof are welded and fixed, forming a structure in which the shield 35 wraps the mounting seat 32 and the eccentric shaft mechanism 33. It prevents outdoor parts from being rusted by rainwater, and protects people from being pinched by the rotation of gears, thereby improving safety and practical performance.

[0043] In the above or some embodiments, a spring is provided at one end of the pawl 343 away from the extension rod 3431 , and the pawl 343 is always engaged with the ratchet 342 under the action of the spring.

[0044] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A quick closing and pressing mechanism for an upper box cover of a biomass boiler bag filter, comprising an outer box (1) of the biomass boiler bag filter, and a door cover (2) used in conjunction with the outer box (1), characterized in that: A clamping mechanism (3) for clamping the door cover (2) is provided at one end of the outer box body (1) close to the door cover (2), the clamping mechanism (3) comprising an eccentric shaft mechanism (33) and a wedge-shaped slider (31) moving with the eccentric shaft mechanism (33), a fixing plate (22) is provided on the door cover (2), a square hole (221) for accommodating the wedge-shaped slider (31) is provided on the fixing plate (22), a structure is formed in which the wedge-shaped slider (31) is inserted into the square hole (221) under the push of the eccentric shaft mechanism (33) to fix the door cover (2), the clamping mechanism (3) further comprising a mounting seat (32), the mounting seat (32) being fixedly connected to a side of the outer box body (1) close to the door cover (2), the mounting seat (32) being provided with a slider mounting hole (321) for accommodating the wedge-shaped slider (31), the slider mounting hole (321) comprising a circular hole portion and a square hole portion, the diameter of the circular hole portion being greater than the diagonal length of the square hole portion; The mounting seat (32) is provided with a first groove (322) for accommodating the fixing plate (22), so that after the door cover (2) is closed, the fixing plate (22) enters the first groove (322); the first groove (322) is arranged perpendicular to the slider mounting hole (321) and is in communication with the square hole portion of the slider mounting hole (321); The mounting seat (32) is provided with a second groove (323) for accommodating an eccentric shaft mechanism (33). The eccentric shaft mechanism (33) includes an eccentric shaft (331). The eccentric shaft (331) is rotatably connected in the second groove (323) and is in contact with the wedge-shaped slider (31). The pressing mechanism (3) includes a shield (35). The shield (35) includes a horizontal baffle and a vertical baffle. A drainage hole (351) is provided on the vertical baffle. The vertical baffle is fixedly connected to one end of the outer box (1) close to the mounting seat (32). The horizontal baffle is arranged perpendicular to the vertical baffle and the opposite ends thereof are fixedly connected, so that the shield (35) wraps the mounting seat (32) and the eccentric shaft mechanism (33). The structure of the spindle mechanism (33), wherein the wedge-shaped slider (31) comprises a spring fixing rod (311), the spring fixing rod (311) being sleeved with a spring (312), the diameter of the spring (312) being larger than the diameter of the circular hole portion of the slider mounting hole (321); when the door cover (2) is closed, the eccentric shaft (331) rotates to a set angle, pushing the wedge-shaped slider (31) to extend out of the slider mounting hole (321) and enter the square hole (221) to fix the door cover (2); when the eccentric shaft (331) rotates to a set angle again, the wedge-shaped slider (31) exits the square hole (221) under the action of the spring (312) and retracts into the slider mounting hole (321).

2. The quick closing and pressing mechanism for the upper door cover of the biomass boiler bag filter according to claim 1 is characterized in that: The eccentric shaft (331) comprises a first eccentric shaft (3311), a second eccentric shaft (3312), a third eccentric shaft (3313), and a fourth eccentric shaft (3314); the first eccentric shaft (3311), the second eccentric shaft (3312), the third eccentric shaft (3313), and the fourth eccentric shaft (3314) are arranged in a rectangular structure; mutually meshing bevel gears (332) are respectively provided at opposite ends of the first eccentric shaft (3311) and the second eccentric shaft (3312); mutually meshing bevel gears (332) are respectively provided at opposite ends of the second eccentric shaft (3312) and the third eccentric shaft (3313); ), mutually meshing bevel gears (332) are respectively provided at opposite ends of the third eccentric shaft (3313) and the fourth eccentric shaft (3314), and a driving mechanism (34) is provided at one end of the first eccentric shaft (3311) close to the fourth eccentric shaft (3314); a structure is formed in which the driving mechanism (34) drives the first eccentric shaft (3311) to rotate, the first eccentric shaft (3311) drives the second eccentric shaft (3312) to rotate via the bevel gear (332), the second eccentric shaft (3312) drives the third eccentric shaft (3313) to rotate, and the third eccentric shaft (3313) drives the fourth eccentric shaft (3314) to rotate.

3. The quick closing and pressing mechanism for the upper door cover of the biomass boiler bag filter according to claim 2 is characterized in that: The driving mechanism (34) comprises a rotating rod (341), a ratchet (342), and a pawl (343); the ratchet (342) is provided with an extension sleeve (3421); the extension sleeve (3421) is provided with a through hole for accommodating the rotating rod (341); the ratchet (342) is sleeved on one end of the first eccentric shaft (3311) close to the fourth eccentric shaft (3314); the first eccentric shaft (3311) is provided with a through hole for accommodating the rotating rod (341); The ratchet (343) is hinged on the mounting seat (32) via a pin, so that the rotating rod (341) passes through the through hole of the extension sleeve (3421) and is inserted into the groove of the first eccentric shaft (3311). The rotating rod (341) drives the ratchet (342) and the first eccentric shaft (3311) to rotate, and the ratchet (343) prevents the ratchet (342) and the first eccentric shaft (3311) from rotating inversely.

4. The quick closing and pressing mechanism for the upper door cover of the biomass boiler bag filter according to claim 3 is characterized in that: An extension rod (3431) for rotating the pawl (343) is provided at one end of the pawl (343) close to the pin shaft. The extension rod (3431) is longer than the pawl (343) and its cross-sectional area gradually increases along its extension direction, forming a structure in which the pawl (343) is always meshed with the ratchet wheel (342) under the action of the gravity of the extension rod (3431).

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