A bag filter suitable for a rotary kiln

Abstract

The present application relates to the technical field of environmental protection equipment, and more particularly to a bag type dust collector suitable for a rotary kiln. The bag type dust collector comprises a main shell, a flower plate fixedly connected in the main shell, filter bags uniformly distributed and clamped on the flower plate, and a cage bone mechanism arranged in each filter bag. The cage bone mechanism comprises a fixing sleeve sleeved on the filter bag, a mounting ring rotationally connected to the fixing sleeve, support elastic strips annularly distributed and fixedly connected to the mounting ring, a sliding frame provided on the support elastic strips, and a control ring slidingly connected to the sliding frame. The support elastic strips serve as longitudinal ribs of the cage bone, and the control ring serves as a transverse rib of the cage bone. The cage bone can be retracted and dilated while the structural strength of the cage bone is maintained. Thus, the contact area between the cage bone and the filter bag is reduced, and the friction between the cage bone and the filter bag is reduced during the process of inserting the cage bone into the filter bag. Thus, the probability of the filter bag falling off and being scratched is reduced, the installation efficiency is improved, and the cost of the filter bag and the loss caused by shutdown are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environmental protection equipment, and particularly relates to a bag type dust collector suitable for a rotary kiln. BACKGROUND

[0002] The bag type dust collector is a high-efficiency dust removal equipment for capturing solid particles in dust-containing gas by using a fiber filter bag. The gas is purified through the filtration and dust removal process to reduce the pollution to the atmospheric environment. In the rotary kiln system, the bag type dust collector is widely used for treating high-temperature and high-dust-concentration flue gas, and can effectively control dust emission and meet the environmental protection requirements. When the bag type dust collector is running, a significant pressure difference is formed between the inside and outside of the filter bag due to the airflow resistance. In order to maintain the ideal working mode of the filter bag (avoid excessive collapse and wrinkle), a cage bone with a matching size is installed inside the filter bag as a support framework. When the filter bag and the cage bone are replaced, the worker needs to first put the new filter bag in the folded or curled state through the flower plate hole into the box, and accurately clamp the elastic ring at the opening of the filter bag to the edge of the flower plate hole. The filter bag is preliminarily fixed through the tension of the elastic ring, and then the cage bone is inserted into the filter bag. In this process, the filter bag is affected by the friction force between the filter bag and the cage bone, and the filter bag may be separated from the flower plate hole, which causes the filter bag to fall into the bag type dust collector. The worker needs to spend additional time and effort to pick up the filter bag and reinstall it, which slows down the overall installation progress and reduces the work efficiency. In addition, since the cage bone is welded by horizontal ribs and vertical ribs, if the welding points are not completely polished, burrs, welding slag or sharp edges are left, which may scratch, hook or even tear the relatively fragile filter bag fibers during the insertion of the cage bone into the filter bag. Once the filter bag is damaged, the filtering performance will be seriously reduced or even lost, which may cause the dust emission concentration to exceed the standard and the machine to be stopped for secondary replacement, resulting in additional filter bag cost and downtime loss. SUMMARY

[0003] The present application provides a bag type dust collector suitable for a rotary kiln to overcome the shortcomings of the existing cage bone that may scratch the filter bag and cause the filter bag to fall off during use.

[0004] Technical scheme: A bag type dust collector suitable for a rotary kiln, comprising: a main shell, the main shell is provided with an air inlet pipe, an ash discharge pipe and an air outlet pipe, a flower plate is fixedly connected to the upper part in the main shell, the flower plate is clamped with a plurality of filter bags which are uniformly distributed, each filter bag is provided with a cage bone mechanism for providing internal support, and a cleaning assembly for cleaning the filter bag is arranged in the main shell.

[0005] The cage mechanism comprises a fixed sleeve, which is sleeved on the upper part of the filter bag, the fixed sleeve is rotationally connected with a mounting ring, the lower side of the mounting ring is fixedly connected with a plurality of support elastic strips distributed in a ring shape, each support elastic strip is provided with an equal number of sliding frames distributed at equal intervals on the side close to the central axis of the mounting ring, the height of the sliding frames gradually decreases in the direction gradually away from the central axis of the mounting ring, all the sliding frames at the same height are jointly and slidably connected with a control ring, each fixed sleeve is provided with an adjusting assembly for adjusting the height of the control ring.

[0006] Further, the adjusting assembly comprises:

[0007] A plurality of connecting ribs, an adjusting rod, a mounting cylinder and a locking piece, all the control rings are fixedly connected with the connecting ribs, the upper parts of all the connecting ribs are jointly fixedly connected with the adjusting rod, the mounting cylinder is arranged on the fixed sleeve, the mounting cylinder is rotationally connected with the locking piece, and the locking piece is threadedly connected with the adjusting rod.

[0008] Further, the cleaning assembly comprises:

[0009] A plurality of dust cleaning pipes, a plurality of extension pieces and a plurality of electric push rods, the dust cleaning pipes are fixedly connected in the main shell and located above the flower plate, the dust cleaning pipes are connected with an external high-pressure pulse module, the dust cleaning pipes are provided with branch pipes distributed at equal intervals, the branch pipes correspond to the filter bags one by one, the branch pipes are located above adjacent filter bags and coaxial with the adjacent filter bags, the branch pipes are sealingly and limitingly slidably connected with the adjacent extension pieces, the flower plate is fixedly connected with the electric push rods, all the dust cleaning pipes are equally divided into groups with the same number of electric push rods, all the extension pieces on the dust cleaning pipes in the same group are connected with each other through connecting rods and fixedly connected with the telescopic ends of adjacent electric push rods.

[0010] Further, the lower part of the support elastic strip is fixedly connected with an elastic sheet, the elastic sheet is used for supporting the bottom of the adjacent filter bag, and all the elastic sheets in the same filter bag are jointly connected with a connecting disc.

[0011] Further, the fixed sleeve and the adjacent mounting cylinder are jointly fixedly connected with a plurality of elastic arc strips distributed in a ring shape, the mounting cylinder is slidably connected with the fixed sleeve, the inner diameter of the extension piece is greater than the maximum diameter of the adjusting rod, and the extension piece is used for extruding the adjacent mounting cylinder.

[0012] Further, the elastic coefficient of the elastic arc strip is greater than the elastic coefficient of the support elastic strip.

[0013] Further, it further comprises:

[0014] A plurality of inclination adjusting components equal in number to the sliding frames are arranged on adjacent sliding frames respectively, and are used for adjusting the inclination angle of the sliding frames relative to the horizontal plane, the inclination adjusting component comprises:

[0015] A connecting strip and an adjusting member, the connecting strip is fixedly connected with adjacent supporting elastic strips, the connecting strip passes through the sliding frame and is in sliding connection with the sliding frame, the sliding frame is hingedly connected with adjacent supporting elastic strips, the connecting strip is located above the hinged connection point of the sliding frame and the supporting elastic strip, the sliding frame is in rotational connection with the adjusting member, and the adjusting member is in threaded connection with the connecting strip.

[0016] Further, a plurality of cross support components distributed at equal intervals are arranged in the filter bag, and the cross support components are used for supporting the filter bag, the cross support component comprises:

[0017] A plurality of supporting arc strips equal in number to the supporting elastic strips and a plurality of sliding arc strips equal in number to the supporting elastic strips, the supporting arc strips and the sliding arc strips are fixedly connected to the two sides of adjacent supporting elastic strips respectively, and the supporting arc strips and the sliding arc strips on adjacent two supporting elastic strips are in sliding connection, and the supporting arc strips are used for supporting the filter bag.

[0018] Further, all the supporting arc strips on the same supporting elastic strip are staggered with all the sliding frames.

[0019] Further, the supporting arc strip is provided with a trigger groove on the side close to the central axis of the filter bag, and the sliding arc strip is provided with a protruding portion on the end away from the supporting elastic strip fixedly connected with the sliding arc strip, and the trigger groove is used for limiting the adjacent protruding portion.

[0020] Compared with the prior art, the present application has the advantages and positive effects that: the supporting elastic strips are used as longitudinal ribs of the cage, the control rings are used as transverse ribs of the cage, the cage is retracted and dilated while the structural strength of the cage is maintained, the contact area between the cage and the filter bag is reduced during the process of inserting the cage into the filter bag, the friction between the cage and the filter bag is reduced, the probability of the filter bag falling off and being scratched is reduced, the installation efficiency is improved, the cost of the filter bag and the loss during shutdown are reduced.

[0021] The extension member is used to extend the branch pipe, so as to increase the distance between the dust removal stage ash removal pipe and the filter bag, thereby ensuring the maximization of the opening area of the upper end of the filter bag, reducing the flow resistance of the gas in the ash removal pipe, and reducing the attachment amount of dust particles in the ash removal pipe and the branch pipe, so that the best high-pressure pulse cleaning effect can be maintained.

[0022] The elastic arc strip provides support force for the mounting cylinder, so that the mounting cylinder can slide relative to the fixed sleeve, and then when the filter bag is cleaned, the cage can be automatically controlled to contract, the gap between the cage and the filter bag is increased, and then the vibration amplitude of the filter bag is increased, so that the cage can stretch the filter bag, the wrinkles on the surface of the filter bag are eliminated to the maximum extent, and the vibration cleaning of the filter bag is not affected.

[0023] The relative position of the connecting strip and the sliding frame is controlled by the adjusting piece, and then the inclination angle of the sliding frame relative to the horizontal plane is controlled, the adjustment of the contraction and relaxation rate of each position of the cage is realized, and then when the filter bag is cleaned, the filter bag is cleaned according to the amount of dust particles attached to different positions of the filter bag and the different cleaning efficiency of different positions. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the application;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the filter plate and the filter bag of the application;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the dust removal pipe and the electric push rod of the application;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the supporting elastic strip and the connecting rib of the application;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixed sleeve and the control ring of the application;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the supporting elastic strip and the control ring of the application;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the mounting cylinder and the elastic arc strip of the application;

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the control ring and the connecting rib of the application;

[0032] Figure 9 It is a schematic diagram of the three-dimensional structure of the adjusting rod and the locking piece of the application;

[0033] Figure 10 It is a schematic diagram of the three-dimensional structure of the dust removal pipe and the extension piece of the application;

[0034] Figure 11 It is a schematic diagram of the three-dimensional structure of the elastic sheet and the connecting disc of the application;

[0035] Figure 12 It is a schematic diagram of the three-dimensional structure of the connecting strip and the adjusting piece of the application;

[0036] Figure 13 The schematic diagram of the three-dimensional structure of the supporting arc strip and the sliding arc strip of the application.

[0037] In the figure: 1-main shell, 101-air inlet pipe, 102-ash discharge pipe, 103-exhaust pipe, 2-flower plate, 3-filter bag, 4-fixing sleeve, 5-mounting ring, 6-supporting elastic strip, 7-sliding frame, 8-control ring, 9-connection rib, 10-adjusting rod, 11-mounting cylinder, 12-locking piece, 13-ash cleaning pipe, 131-branch pipe, 14-extending piece, 15-electric push rod, 16-elastic sheet, 17-connection disc, 18-elastic arc strip, 19-connection strip, 20-adjusting piece, 21-supporting arc strip, 211-trigger groove, 22-sliding arc strip, 221-protruding part. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0039] Examples of the described embodiments are shown in the accompanying drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application. Embodiment 1

[0040] The embodiment discloses a bag-type dust collector suitable for a rotary kiln, so as to reduce the probability of scratching and dropping of filter bags during installation of a cage.

[0041] Referring to Figures 1-6 A bag-type dust collector suitable for a rotary kiln comprises a main shell 1, the main shell 1 is provided with an air inlet pipe 101, an ash discharge pipe 102 and an exhaust pipe 103, an upper portion in the main shell 1 is fixedly connected with a flower plate 2, the flower plate 2 is provided with seven rows and eight columns of plate holes which are uniformly distributed, each plate hole of the flower plate 2 is clamped with a filter bag 3, (see Figure 4 The upper portion of the filter bag 3 is an elastic expansion ring, each filter bag 3 is provided with a cage mechanism for providing internal support for the filter bag 3, and the main shell 1 is provided with a cleaning assembly for cleaning the filter bag 3.

[0042] Referring to Figures 4-9 The cage mechanism comprises a fixing sleeve 4, which is sleeved on the upper portion of the filter bag 3 and provides internal support for the expansion ring of the upper portion of the filter bag 3, so as to prevent the expansion ring of the upper portion of the filter bag 3 from wrinkling and separating from the plate hole; the fixing sleeve 4 is rotationally connected with a mounting ring 5, (see Figure 6The fixing sleeve 4 is composed of an upper ring and two lower half rings. The mounting ring 5 is clamped on the upper ring of the fixing sleeve 4 through the two lower half rings, so as to realize the rotary connection of the fixing sleeve 4 and the mounting ring 5. The lower side of the mounting ring 5 is fixedly connected with nine support elastic strips 6 distributed in a ring shape. The support elastic strips 6 are made of elastic metal material, and the cross section of the support elastic strips 6 is circular. The support elastic strips 6 are in an inclined state in a free state (i.e. a state that the support elastic strips 6 are not stressed and not bent). In the upward direction, the support elastic strips 6 are close to the center axis of the mounting ring 5. Each side of the support elastic strip 6 close to the center axis of the mounting ring 5 is provided with four sliding frames 7 distributed at equal intervals. The sliding frames 7 are provided with sliding grooves. The sliding grooves of the sliding frames 7 are inclined to the direction away from the center axis of the mounting ring 5 in the upward direction (the acute angle formed by the middle line of the sliding groove on the sliding frame 7 and the horizontal plane is referred to as the inclination angle). The nine sliding frames 7 at the same height are commonly connected with a control ring 8. The diameter of the sliding position of the control ring 8 in the sliding frame 7 is smaller than the diameter of the remaining positions. The control ring 8 is in contact with the two side surfaces of the adjacent sliding frame 7. In this way, the middle line of the sliding groove on all the sliding frames 7 always passes through the center axis of the mounting ring 5, preventing the sliding frame 7 from being deflected. Each fixing sleeve 4 is provided with an adjusting assembly for adjusting the height of the control ring 8.

[0043] The above arrangement can realize that the support elastic strips 6 act as longitudinal ribs of the cage bone, and the control ring 8 acts as a horizontal rib of the cage bone, so as to realize the contraction and relaxation of the cage bone while maintaining the structural strength of the cage bone. In this way, the contact area between the cage bone and the filter bag 3 is reduced during the process of inserting the cage bone into the filter bag 3, the friction between the cage bone and the filter bag 3 is reduced, the probability of the filter bag 3 falling off and being scratched is reduced, the installation efficiency is improved, and the cost and downtime loss of the filter bag 3 are reduced.

[0044] Referring to Figure 5 , Figure 6 , Figure 8 and Figure 9 , the adjusting assembly comprises three connecting ribbons 9 distributed uniformly in a ring shape, an adjusting rod 10, a mounting cylinder 11 and a locking piece 12. All the control rings 8 are fixedly connected with the connecting ribbons 9. The upper parts of all the connecting ribbons 9 are commonly fixedly connected with the adjusting rod 10. The mounting cylinder 11 is arranged on the fixing sleeve 4. The adjusting rod 10, the fixing sleeve 4, the mounting cylinder 11 and the mounting ring 5 are coaxial. The mounting cylinder 11 is in rotary connection with the locking piece 12. The locking piece 12 is in threaded connection with the adjusting rod 10.

[0045] The above arrangement can realize that the locking piece 12 controls the movement of the adjusting rod 10, and then the connecting ribbons 9 drive the control ring 8 to move, so as to change the height of the control ring 8, so that the control ring 8 slides in the sliding frame 7. In this way, the distance between the support elastic strip 6 and the center axis of the mounting ring 5 is changed, so as to realize the contraction and relaxation of the cage bone.

[0046] It should be noted that in the present embodiment, the sliding frame 7 and the adjacent support spring 6 are considered to be fixedly connected, and the installation cylinder 11 and the fixed sleeve 4 are considered to be fixedly connected; the parts that provide support for the filter bag 3 are collectively referred to as the cage bones; the cage bones provide support for the filter bag 3 but do not make the filter bag 3 in a fully expanded state (in this state, the filter bag 3 does not produce stacking), the purpose is to leave a margin for the vibration of the filter bag 3 during cleaning; the state of the filter bag 3 in the main shell 1 is divided into two stages of dust removal and vibration ash cleaning, wherein the dust removal stage is to filter dust by using the filter bag 3, and the vibration ash cleaning stage is to clean the dust particles attached to the surface of the filter bag 3.

[0047] After the above arrangement, the steps of controlling the cage bones to contract and dilate are as follows: the cage bone state in the drawing is the dilated state, and the subsequent operation of one of the cage bones is taken as an example to illustrate the contraction operation of the cage bone; the worker rotates the locking member 12, the locking member 12 is lowered through the threaded transmission adjusting rod 10, the adjusting rod 10 drives the four control rings 8 to move downward through the connecting rib 9, the control ring 8 slides in the adjacent sliding frame 7, and then the sliding frame 7 moves towards the center axis of the installation ring 5, the sliding frame 7 guides the adjacent support spring 6 to bend, so that the nine support springs 6 are simultaneously contracted, when the control ring 8 moves to the bottom of the adjacent sliding frame 7, the nine support springs 6 are in a state of no force and no bending, at this time, stop rotating the locking member 12.

[0048] Referring to Figures 1-3 and Figure 10 , the cleaning assembly comprises eight ash cleaning pipes 13, seven rows of eight extension members 14 and two electric push rods 15, the ash cleaning pipe 13 is fixedly connected in the main shell 1 and located above the flower plate 2, the ash cleaning pipe 13 is connected with the external high-pressure pulse module through the pulse valve, the ash cleaning pipe 13 is used to transmit high-pressure pulse gas, eight ash cleaning pipes 13 are respectively located above eight rows of plate holes, each ash cleaning pipe 13 is provided with seven branch pipes 131 distributed at equal intervals, the branch pipe 131 corresponds to the filter bag 3 one by one, the branch pipe 131 is located above the adjacent filter bag 3, and the branch pipe 131 is coaxial with the adjacent filter bag 3, the branch pipe 131 is sealingly and limitingly connected with the adjacent extension member 14, the electric push rod 15 is fixedly connected with the flower plate 2, the eight ash cleaning pipes 13 are divided into left and right two groups, all the extension members 14 corresponding to each group of four adjacent ash cleaning pipes 13 are connected as a whole through connecting rods, and the two groups of extension members 14 connected as a whole are fixedly connected with the extension ends of the adjacent electric push rods 15; in actual use, according to the cleaning frequency, cleaning requirements and other conditions, the eight rows of extension members 14 can be freely combined into several groups, and the number of electric push rods 15 is increased synchronously, so that each group of extension members 14 corresponds to one electric push rod 15, thereby achieving the purpose of dust removal and self-cleaning; during the dust removal stage, the distance between the extension member 14 and the flower plate 2 is in the maximum state.

[0049] The above arrangement can achieve the extension of the branch pipe 131 by the extension member 14, thereby increasing the distance between the dust removal stage dust removal pipe 13 and the filter bag 3, maximizing the opening area of the upper end of the filter bag 3, reducing the flow resistance of the gas in the dust removal pipe 13, and reducing the adhesion of dust particles in the dust removal pipe 13 and the branch pipe 131, thereby maintaining the best high-pressure pulse cleaning effect.

[0050] Referring to Figure 5 and Figure 11 The lower part of the supporting spring strip 6 is fixedly connected with an elastic sheet 16, the elastic sheet 16 is made of elastic metal material, the elastic coefficient of the elastic sheet 16 is smaller than that of the supporting spring strip 6, the elastic sheet 16 in the drawing is in a state of small bending degree after deformation (i.e. the bending degree of the elastic sheet 16 is larger in the state of no stress), all the elastic sheets 16 in the same filter bag 3 are commonly connected with a connecting disc 17, and the connecting disc 17 is used to connect all the elastic sheets 16 as a whole.

[0051] The above arrangement can achieve the deformation of the elastic sheet 16 to store energy and facilitate the swinging of the lower end of the supporting spring strip 6, so that the connecting rib 9 bears more tensile stress, thereby reducing the diameter of the connecting rib 9 on the premise of realizing the contraction and relaxation of the cage bone, and further reducing the overall weight of the cage bone.

[0052] During the contraction of the cage bone, the connecting rib 9 bears tensile stress, and the connecting rib 9 guides the deformation of the supporting spring strip 6 and the elastic sheet 16 together through the control ring 8 and the sliding frame 7 to store energy, and during the relaxation of the cage bone, the control ring 8 and the connecting rib 9 are driven downward by the sliding frame 7 under the action of the elastic force of the supporting spring strip 6 and the elastic sheet 16, so that the connecting rib 9 also bears tensile stress, thereby reducing the diameter of the connecting rib 9 and reducing the overall weight of the cage bone.

[0053] After adopting the above arrangement, the working procedure for replacing one of the filter bags 3 is as follows: the worker stops the device and uses a tool to disassemble the dust removal pipe 13 above the filter bag 3 to be replaced, then contracts the cage bone to facilitate the removal of the cage bone, at this time, the worker lifts the fixed sleeve 4 upward to make the cage bone come out of the filter bag 3, then presses the expansion ring at the upper part of the filter bag 3, and disconnects the expansion ring of the filter bag 3 from the board hole of the flower plate 2, at this time, the worker lifts and pulls the filter bag 3 upward, and replaces a new filter bag 3, after the new filter bag 3 is clamped to the board hole, the worker inserts the contracted cage bone into the filter bag 3, and after the fixed sleeve 4 contacts the filter bag 3, controls the relaxation of the cage bone to expand the filter bag 3, thereby completing the replacement of the filter bag 3.

[0054] The cleaning step of the filter bag 3 in the dedusting stage is as follows: in the dedusting stage, the dust-containing gas entering the main shell 1 through the air inlet pipe 101 passes through the filter bag 3, and the dust particles are blocked on the outer side of the filter bag 3; when the filter bag 3 needs to be cleaned, the two electric push rods 15 are controlled to extend and retract one by one; when the retracting end of the electric push rod 15 on the right side retracts, the retracting end of the electric push rod 15 drives the corresponding extension piece 14 to move downward, so that the extension piece 14 moves close to the adjacent filter bag 3; when the extension piece 14 contacts the adjacent mounting cylinder 11, the electric push rod 15 is stopped; at this time, the high-pressure pulse module and the corresponding pulse valves of the four right-side dust removal pipes 13 are started, so that the high-pressure pulse gas enters the four right-side dust removal pipes 13; the high-pressure pulse gas in the dust removal pipe 13 enters the corresponding filter bag 3 through the branch pipe 131 and the extension piece 14, so that the filter bag 3 is quickly expanded and vibrated, and the dust adhered to the outer side of the filter bag 3 is shaken off; then, the filter bag 3 retracts under the action of the pressure difference between the inside and outside, so that the filter bag 3 is expanded and vibrated again when the pulse gas is injected into the filter bag 3 in the next time, thereby realizing the cleaning of the filter bag 3.

[0055] After the cleaning of the seven rows of four columns of filter bags 3 on the right side is completed, the retracting end of the right-side electric push rod 15 is controlled to extend, driving the corresponding extension piece 14 to move upward, so that the extension piece 14 loses contact with the adjacent mounting cylinder 11; at this time, the retracting end of the left-side electric push rod 15 is controlled to retract, and the above steps are repeated to realize the sequential cleaning of all the filter bags 3 in the divided areas. Example 2

[0056] The embodiment discloses a bag-type dust collector suitable for a rotary kiln, which is further optimized on the basis of the embodiment 1.

[0057] Referring to Figure 6 and Figure 7 , the fixed sleeve 4 and the adjacent mounting cylinder 11 are jointly fixedly connected with six annularly distributed elastic arc strips 18, the mounting cylinder 11 is in sliding connection with the fixed sleeve 4, the inner diameter of the extension piece 14 is greater than the maximum diameter of the adjusting rod 10, so that the extension piece 14 can be sleeved on the outer side of the adjusting rod 10, and the extension piece 14 is used for extruding the adjacent mounting cylinder 11; the elastic coefficient of the elastic arc strip 18 is greater than that of the supporting elastic strip 6, so that the cage can keep the supporting elastic strip 6 in the curved force storage state by relying on the elastic force of the elastic arc strip 18 in the relaxed state.

[0058] The above arrangement can realize that the elastic arc strip 18 provides supporting force for the mounting cylinder 11, so that the mounting cylinder 11 can slide relative to the fixed sleeve 4, and then the cage can be automatically controlled to be retracted when the filter bag 3 is cleaned, the gap between the cage and the filter bag 3 is increased, and then the vibration amplitude of the filter bag 3 is increased, so that the cage can not only expand the filter bag 3 but also eliminate the wrinkles on the surface of the filter bag 3 to the maximum extent, and the vibration cleaning of the filter bag 3 is not affected.

[0059] It should be noted that in the corresponding dust removal stage of the embodiment, the cage can provide sufficient support for the filter bag 3, so that the filter bag 3 remains in an expanded state during the dust removal stage.

[0060] After the above setting, the state of the filter bag 3 in the dust removal stage is that the filter bag 3 is expanded by the nine supporting elastic strips 6, so that the side of the filter bag 3 remains in an expanded state, and the wrinkles on the surface of the filter bag 3 are eliminated, so that the dust particles are evenly attached to the surface of the filter bag 3.

[0061] In the vibration cleaning stage, as the extension piece 14 moves downward, the extension piece 14 contacts the adjacent mounting cylinder 11 and pushes the mounting cylinder 11 to move downward, the mounting cylinder 11 presses the adjacent elastic arc strip 18 to bend, and the mounting cylinder 11 drives the adjusting rod 10 to move downward through the locking piece 12, and the above-mentioned step of moving the adjusting rod 10 downward is repeated, so that the cage is contracted, and thus a margin is left for the vibration of the filter bag 3, so as to ensure the normal vibration cleaning of the filter bag 3; after the cleaning is completed, as the extension piece 14 moves upward, the elastic arc strip 18 pushes the mounting cylinder 11 to move upward and reset by relying on the elastic force of the elastic arc strip 18, and in this process, the mounting cylinder 11 drives the adjusting rod 10 to move upward through the locking piece 12, so as to relax the cage. Embodiment 3

[0062] The embodiment discloses a bag-type dust collector suitable for a rotary kiln, and provides a function of controlling the gap between the cage and the filter bag at different positions on the basis of the embodiment 2.

[0063] Referring to Figure 11 and Figure 12 , further comprising: a number of slope adjusting assemblies equal to the number of the sliding frames 7, which are respectively arranged on the adjacent sliding frames 7 and are used for adjusting the inclination angle of the sliding frame 7 relative to the horizontal plane, the slope adjusting assembly comprising: a connecting strip 19 and an adjusting piece 20, the connecting strip 19 is fixedly connected with the adjacent supporting elastic strip 6, the connecting strip 19 is made of a metal material with elasticity, and stainless steel is selected here, the connecting strip 19 passes through the upper part of the sliding frame 7 and is slidably connected with the sliding frame 7, the lower part of the sliding frame 7 is hingedly connected with the adjacent supporting elastic strip 6, so that the inclination angle of the sliding frame 7 can be adjusted, the sliding frame 7 is rotationally connected with the adjusting piece 20, the adjusting piece 20 is threadedly connected with the connecting strip 19, and the connecting mode of the connecting strip 19 and the adjusting piece 20 is the same as the tightening mode of a hose clamp.

[0064] The above setting can realize that the relative position of the connecting strip 19 and the sliding frame 7 is controlled by the adjusting piece 20, and then the inclination angle of the sliding frame 7 relative to the horizontal plane is controlled, so as to adjust the contraction and relaxation rate of the cage at different positions, and then the filter bag 3 can be cleaned according to the amount of dust particles attached to different positions on the filter bag 3 and the different cleaning efficiency of different positions.

[0065] After the above settings, the process of cleaning the filter bag 3 is as follows: in the vibration dust cleaning stage, since the filter bag 3 is elongated, the high-pressure pulse gas enters from the upper end of the filter bag 3 and flows along the filter bag 3 downward, causing the filter bag 3 to be stretched open in the process. However, due to the loss of high-pressure pulse gas, the vibration force of the filter bag 3 gradually weakens in the top-down direction, resulting in low dust cleaning efficiency of the filter bag 3. To solve the above problem, workers can adjust the inclination angle of the sliding frame 7 before installing the cage bone according to the power of the high-pressure pulse module used by the device, the firmness of the dust attached to the filter bag 3 and other factors. In the top-down direction, the inclination angle of the sliding frame 7 gradually decreases, and then when all the control rings 8 in the same filter bag 3 move down by the same height, the distance that the sliding frame 7 moves in the horizontal direction in the top-down direction gradually increases, and then in the top-down direction, the distance between the filter bag 3 and the cage bone gradually increases. In this way, the vibration amplitude of the lower part of the filter bag 3 gradually increases, and then the vibration intensity of the filter bag 3 at each place in the vibration dust cleaning stage tends to be consistent, so that the dust cleaning rate of the filter bag 3 at different heights tends to be consistent, improving the dust cleaning efficiency and reducing the number of vibration dust cleaning of the filter bag 3. Example 4

[0066] The embodiment discloses a bag type dust collector suitable for a rotary kiln, and enhances the strength of the cage bone on the basis of example 3.

[0067] Referring to Figure 5 and Figure 13 , three transverse support assemblies are arranged in the filter bag 3 at equal intervals, which are used to provide support for the filter bag 3. The transverse support assembly comprises nine support arc strips 21 and nine sliding arc strips 22. The support arc strips 21 and the sliding arc strips 22 are both made of elastic metal material, and the surfaces of the two are both polished to reduce the friction between the two and the filter bag 3. The support arc strips 21 and the sliding arc strips 22 are respectively fixedly connected to the two sides of the adjacent support elastic strips 6, and the support arc strips 21 and the sliding arc strips 22 on the adjacent two support elastic strips 6 are slidingly connected. The support arc strips 21 are used to support the filter bag 3. All the support arc strips 21 on the same support elastic strip 6 are staggered with all the sliding frames 7 to provide segmented support for the support elastic strip 6, thereby enhancing the strength of the support elastic strip 6.

[0068] The above settings can realize that the support arc strips 21 and the sliding arc strips 22 are used to provide support for the filter bag 3, reduce the wrinkles on the surface of the filter bag 3, and at the same time, all the support elastic strips 6 are connected as a whole to enhance the bending resistance of the cage bone as a whole.

[0069] Referring to Figure 13 , the side of the support arc strip 21 close to the central axis of the filter bag 3 is provided with a trigger groove 211, and the end of the sliding arc strip 22 away from the support elastic strip 6 fixedly connected thereto is provided with a protruding part 221. The trigger groove 211 is used to limit the adjacent protruding part 221. (See Figure 13When the cage bone is in the relaxation state, the protrusion 221 is not in the adjacent trigger groove 211.

[0070] The above arrangement can achieve that, during the process of folding or relaxing the cage bone, the limiting effect of the trigger groove 211 on the protrusion 221 hinders the movement of the supporting elastic strip 6, so that the local deformation of the supporting elastic strip 6 at the connection between the sliding arc strip 22 and the supporting elastic strip 6 is slower than the local deformation at the connection between the sliding frame 7 and the supporting elastic strip 6, the supporting elastic strip 6 is locally bent to store force and vibrate, and the separation of the cage bone and the filter bag 3 is assisted.

[0071] During the folding process of the cage bone, the distance between the two adjacent supporting elastic strips 6 is reduced, so that the supporting arc strip 21 and the sliding arc strip 22 slide relative to each other, and the trigger groove 211 and the protrusion 221 approach each other. When the trigger groove 211 and the protrusion 221 are in contact, the trigger groove 211 limits the protrusion 221, at this time, the supporting arc strip 21 and the sliding arc strip 22 temporarily stop relative sliding, so that the supporting elastic strip 6 is locally bent and deformed. With the deformation of the supporting elastic strip 6, the force of the two supporting elastic strips 6 driving the relative movement of the supporting arc strip 21 and the sliding arc strip 22 gradually increases, until the limit of the trigger groove 211 on the protrusion 221 is overcome, so that the supporting arc strip 21 and the sliding arc strip 22 slide quickly, the originally bent and deformed position of the supporting elastic strip 6 quickly recovers, and the supporting elastic strip 6 as a whole vibrates. By using the vibration of the supporting elastic strip 6, the cage bone and the filter bag 3 are separated during the folding of the cage bone, and the vibration assists the supporting elastic strip 6 to unfold the wrinkles of the filter bag 3 during the relaxation of the cage bone.

[0072] The above-described and the above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A baghouse suitable for use with a rotary kiln, characterized in that, The utility model provides a filter bag cleaning device, including: Main casing (1), the main casing (1) is provided with air inlet pipe (101), dust removal pipe (102) and exhaust pipe (103), the upper portion in the main casing (1) is fixed with flower board (2), the flower board (2) is clamped and is uniformly distributed with multiple filter bags (3), every filter bag (3) is provided with the cage mechanism for providing its internal support, the main casing (1) is provided with the cleaning assembly for cleaning filter bag (3) in the main casing (1); The cage mechanism includes: a fixed sleeve (4) is sleeved on the upper part of the filter bag (3), the fixed sleeve (4) is rotatably connected with a mounting ring (5), the lower side of the mounting ring (5) is fixedly connected with a plurality of support elastic strips (6) arranged in a ring shape, each support elastic strip (6) is provided with an equal number of sliding frames (7) arranged at equal intervals on the side close to the central axis of the mounting ring (5), the height of the sliding frame (7) gradually decreases in the direction gradually away from the central axis of the mounting ring (5), all the sliding frames (7) at the same height are commonly slidably connected with a control ring (8), each fixed sleeve (4) is provided with an adjusting assembly for adjusting the height of the control ring (8); The adjusting assembly includes: A plurality of connecting ribs (9), an adjusting rod (10), a mounting cylinder (11) and a locking member (12), all the control rings (8) are fixedly connected with the connecting ribs (9), the upper parts of all the connecting ribs (9) are commonly fixedly connected with the adjusting rod (10), the mounting cylinder (11) is arranged on the fixed sleeve (4), the mounting cylinder (11) is rotatably connected with the locking member (12), and the locking member (12) is threadedly connected with the adjusting rod (10); The cleaning assembly includes: A plurality of dust removal pipes (13), a plurality of extension members (14) and a plurality of electric push rods (15), the dust removal pipes (13) are fixedly connected in the main casing (1) and located above the flower board (2), the dust removal pipes (13) are connected with an external high-pressure pulse module, the dust removal pipes (13) are provided with branch pipes (131) arranged at equal intervals, the branch pipes (131) correspond one-to-one with the filter bags (3), the branch pipes (131) are located above adjacent filter bags (3) and coaxial with the adjacent filter bags (3), the branch pipes (131) are sealingly and limitingly slidably connected with adjacent extension members (14), the flower board (2) is fixedly connected with the electric push rods (15), all the dust removal pipes (13) are equally divided into groups with the same number of electric push rods (15), all the extension members (14) on the dust removal pipes (13) in the same group are connected with each other through connecting rods and fixedly connected with the extension ends of adjacent electric push rods (15).

2. A baghouse suitable for use with a rotary kiln as defined in claim 1, wherein, The lower part of the support elastic strip (6) is fixedly connected with an elastic sheet (16), and the elastic sheet (16) is used for supporting the bottom of the adjacent filter bag (3), and all the elastic sheets (16) in the same filter bag (3) are commonly connected with a connecting disc (17).

3. A baghouse suitable for use in a rotary kiln according to claim 1, characterized in that, The fixing sleeve (4) is in common fixed connection with a plurality of elastic arc strips (18) distributed in a ring shape, and the mounting cylinder (11) is in sliding connection with the fixing sleeve (4), the inner diameter of the extension piece (14) is greater than the maximum diameter of the adjusting rod (10), and the extension piece (14) is used for extruding the adjacent mounting cylinder (11).

4. A baghouse suitable for use with a rotary kiln as defined in claim 3, wherein, The elastic coefficient of the elastic arc strip (18) is greater than the elastic coefficient of the supporting elastic strip (6).

5. A baghouse suitable for use with a rotary kiln as defined in claim 2, further characterized by Comprise: A number of inclination adjusting assemblies equal to the number of the sliding frames (7) are arranged on adjacent sliding frames (7) respectively, and are used for adjusting the inclination angle of the sliding frames (7) relative to the horizontal plane, the inclination adjusting assembly comprises: A connecting strip (19) and an adjusting piece (20), the connecting strip (19) is in fixed connection with adjacent supporting elastic strips (6), the connecting strip (19) passes through the sliding frame (7) and is in sliding connection with the sliding frame (7), the sliding frame (7) is hinged to the adjacent supporting elastic strip (6), the connecting strip (19) is located above the hinge point of the sliding frame (7) and the supporting elastic strip (6), the sliding frame (7) is in rotary connection with the adjusting piece (20), and the adjusting piece (20) is in threaded connection with the connecting strip (19).

6. A baghouse suitable for use with a rotary kiln as defined in claim 5, wherein, A plurality of cross support assemblies are arranged in the filter bag (3) at equal intervals, and are used for providing support for the filter bag (3), the cross support assembly comprises: A number of supporting arc strips (21) equal to the number of the supporting elastic strips (6) and a number of sliding arc strips (22) equal to the number of the supporting elastic strips (6), the supporting arc strips (21) and the sliding arc strips (22) are respectively fixed to the two sides of adjacent supporting elastic strips (6), and the supporting arc strips (21) and the sliding arc strips (22) on adjacent two supporting elastic strips (6) are in sliding connection, and the supporting arc strips (21) are used for supporting the filter bag (3).

7. A baghouse suitable for use with a rotary kiln as defined in claim 6, wherein, All the supporting arc strips (21) on the same supporting elastic strip (6) are staggered with all the sliding frames (7).

8. A baghouse suitable for use with a rotary kiln as defined in claim 6, wherein, The supporting arc strip (21) is provided with a trigger groove (211) on the side close to the central axis of the filter bag (3), and the sliding arc strip (22) is provided with a protruding portion (221) on the end away from the supporting elastic strip (6) fixed thereto, and the trigger groove (211) is used for limiting the adjacent protruding portion (221).

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