A combined air conditioning unit

Abstract

The present application relates to industrial air conditioning equipment technical field, provide a kind of combined air conditioning unit, including shell, air return section and filter section are equipped in shell, shell is opened with air inlet and air return section in air return section, it is characterized in that: filter section includes combined frame body and bag filter, combined frame body is at least installed with two groups of bag filter, each group bag filter is equipped with wind deflector, the front side of wind deflector and the rear side of wind deflector are equipped with closable closure mechanism, the inside of wind deflector is equipped with filter bag pulling mechanism and rapping mechanism, filter bag pulling mechanism includes front and rear pulling mechanism and left and right pulling mechanism;Rapping mechanism is rotated by driving rapping paddle and is rapped to filter bag and is operated;Combined frame body is equipped with dust discharge channel that communicates with the air inlet end of bag filter, dust discharge channel communicates dust hopper.The present application overcomes the deficiencies of prior art, design is reasonable, compact structure, solve the technical problem that bag filter in existing air conditioning unit is not good in dust cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of industrial air conditioning equipment technology, and specifically to a combined air conditioning unit. Background Technology

[0002] A modular air handling unit is an air handling equipment assembled from various air handling functional sections. It is suitable for the air handling needs of factories in various fields such as chemical fiber and cotton spinning. It generally includes return air section, filtration section, surface cooling water baffle section, heating section, spray humidification section and supply air section.

[0003] The filtration section of a modular air conditioning unit is typically equipped with a bag filter to intercept dust, particulate matter, and other impurities in the air, ensuring the cleanliness of the output air. The filter bags of bag filters are mostly made of flexible material, and after long-term use, a large amount of dust will accumulate on the inside, leading to increased filtration resistance and decreased filtration efficiency. Therefore, regular cleaning and maintenance are required.

[0004] Existing bag filter cleaning methods have the following problems: On the one hand, most require the unit to be shut down, the filter bags to be disassembled, and then manually cleaned or replaced. During the cleaning process, the entire air conditioning unit cannot operate normally, affecting the normal operation of the application scenario. On the other hand, some equipment uses a single vibration or back-blowing method for cleaning. Since the flexible filter bags of bag filters do not have internal or external support structures, the force of a single vibration is difficult to be transmitted to all parts of the filter bag. It can only remove surface dust and has a poor cleaning effect on deeply embedded dust. After cleaning, the filter bag resistance does not recover significantly, and the cleaning cycle is short.

[0005] Therefore, we propose a combined air conditioning unit. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides a combined air conditioning unit that overcomes the shortcomings of the prior art, has a reasonable design and compact structure, and solves the technical problem of poor dust removal effect of bag filter in existing air conditioning units.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A modular air conditioning unit includes a housing, within which a return air section and a filter section are provided. The housing has an air inlet and a return air outlet corresponding to the return air section. The filter section comprises a frame and bag filters. The frame is fitted with at least two sets of bag filters. Each set of bag filters is covered by an air guide hood. The front and rear sides of the air guide hood are equipped with openable and closable closure mechanisms. The inner side of the air guide hood is provided with a filter bag pulling mechanism and a vibrating mechanism. The filter bag pulling mechanism includes a front-to-back pulling mechanism and a left-to-right pulling mechanism. The front-to-back pulling mechanism is installed at the output end of the left-to-right pulling mechanism and is used to pull each filter bag of the bag filter in the front-to-back direction. The left-to-right pulling mechanism is installed on the inner wall of the air guide hood and is used to pull each filter bag of the bag filter in the left-to-right direction. The vibrating mechanism vibrates the filter bags by driving vibrating discs to rotate. The frame has a dust discharge channel communicating with the air inlet of the bag filters, and the dust discharge channel is connected to a dust collection hopper.

[0009] Furthermore, the air outlet side of the air guide shroud is connected to a blow-washing pipe, and the blow-washing pipe is connected to the air outlet of the fan;

[0010] Alternatively, the ash collection hopper is connected to a suction pipe, which is connected to the air inlet of a fan.

[0011] Furthermore, the sealing mechanism includes a sealing plate and a sealing drive motor. The front and rear sides of the air guide hood are respectively supported by sealing plates via rotating shafts. The sealing drive motor is connected to the rotating shafts to drive the sealing plates to flip open and close. The sealing mechanism includes a front sealing mechanism and a rear sealing mechanism. The sealing plate of the front sealing mechanism is supported by the combined frame via a rotating shaft. After the sealing plate of the front sealing mechanism is closed, it is spaced apart from the front port of the filter bag. This spaced area is located within the fixed frame of the bag filter, forming an upper ash discharge gap. This upper ash discharge gap communicates with the ash discharge channel. The sealing plate of the rear sealing mechanism is supported by the air guide hood via a rotating shaft. The sealing drive motor of the front sealing mechanism is fixed to the combined frame, and the sealing drive motor of the rear sealing mechanism is fixed to the air guide hood. Additionally, the fixed frame has downwardly inclined ash-guiding ramps on both sides of the upper ash discharge gap.

[0012] Furthermore, the sealing mechanism includes a pair of sealing plates, with rotating shafts fixed to adjacent ends of each plate. The rotating shafts of the two sealing plates are connected by a sealed synchronous gear set, which is driven by a sealed drive motor. Specifically, the sealed synchronous gear set includes a sealed driving gear, a sealed intermediate gear, a first sealed driven gear, and a second sealed driven gear. The sealed driving gear is mounted on the output shaft of the sealed drive motor and meshes with both the sealed intermediate gear and the second sealed driven gear. The sealed intermediate gear is rotatably supported on the combined frame or air guide cover. The first sealed driven gear is mounted on the rotating shaft of one of the sealing plates and meshes with the sealed intermediate gear. The second sealed driven gear is mounted on the rotating shaft of the other sealing plate.

[0013] Furthermore, the front and rear pulling mechanism includes a synchronizing rod, a synchronizing block, a first pulling drive electric cylinder, and a return spring. The synchronizing rod and the synchronizing block are spaced apart from top to bottom and are parallel to each other. The two ends of the synchronizing rod are fixedly connected to the synchronizing block through supports. The synchronizing rod is connected to each filter bag of the bag filter. The synchronizing block is slidably mounted on a pair of guide rails. The pair of guide rails are fixed to the sliding base along the front and rear direction. The first pulling drive electric cylinder and the return spring are respectively located on both sides of the synchronizing block. The first pulling drive electric cylinder is fixed to the sliding base and its output end is connected to the synchronizing block. The return spring is sleeved on the guide bolt and its two ends abut against the side wall of the synchronizing block and the sliding base (the front and rear sides of the sliding base, i.e., the two sides in the width direction, respectively form upwardly extending side walls). The guide bolt is threadedly installed on the side wall of the sliding base (the guide bolt passes through one side wall of the sliding base and the synchronizing block and is threadedly connected to the other side wall of the sliding base).

[0014] Furthermore, the filter bag has a triangular or trapezoidal cross-section (creating a gap between adjacent filter bags to accommodate the rapping drive shaft and rapping disc), the opening width of the filter bag is greater than the root width, a side strip is fixed to the root of the filter bag, and a connecting perforation is provided at the end of the side strip.

[0015] The synchronizing rod passes through the connecting holes of each edge strip, and the synchronizing rod is threaded with limit nuts on both sides of the connecting holes.

[0016] Furthermore, a side strip is fixed to the root of the filter bag, and a connecting perforation is provided at the end of the side strip;

[0017] The synchronizing rod is fixed with connecting plates through the connecting holes of each side strip. The connecting plates have connecting and mating holes. The side strips and connecting plates are connected by a tension spring. The spring feet at both ends of the tension spring hook onto the connecting holes and the connecting and mating holes, respectively.

[0018] Furthermore, the left and right pulling mechanism includes a second pulling drive electric cylinder, and an L-shaped connecting plate is fixed between a pair of side walls at the end of the sliding base. The second pulling drive electric cylinder is fixed on the inner side wall of the air guide shroud and its output end is connected to the connecting plate at the end of the sliding base.

[0019] Furthermore, the rapping mechanism includes a rapping drive shaft, a rapping paddle, and a rapping drive motor. A rapping drive shaft is provided between adjacent filter bags of the bag filter. The rapping drive shaft is vertically arranged and its two ends are rotatably supported on the top and bottom walls of the air guide shroud. The rapping drive shafts are driven by a rapping synchronous gear set. The rapping paddle is installed on the rapping drive shaft. The rapping drive motor is fixed on the air guide shroud and is used to drive the rapping synchronous gear set to rotate.

[0020] Furthermore, the vibrating paddle is elongated and its two ends are rounded.

[0021] This invention provides a combined air conditioning unit, which has the following beneficial effects:

[0022] 1. By having at least two sets of bag filters work in turn, while one set is being cleaned, the other set is filtering normally, and filter bag maintenance can be completed without stopping the machine. This solves the problem of traditional cleaning requiring machine shutdown and ensures the continuous operating efficiency of the air conditioning unit.

[0023] 2. By repeatedly pulling the filter bag with the front and rear pulling mechanism and the left and right pulling mechanism, the filter bag is tightened and loosened. Combined with the vibration action of the vibration mechanism, the dust attached to the inside of the filter bag is fully removed. This solves the problem of poor dust removal effect of traditional flexible filter bags with single vibration. The filter bag has a high resistance recovery rate, which reduces the frequency and cost of filter bag replacement.

[0024] 3. The dust removal guide hood is completely sealed by an openable and closable sealing mechanism to prevent dust from escaping into other filter sections or the air conditioning unit during the dust removal process, ensuring the cleanliness of the air outlet and preventing dust from contaminating other parts of the unit; with the assistance of the blow-wash pipe or suction pipe, the detached dust enters the dust collection hopper through the dust discharge channel, which facilitates the centralized collection and treatment of dust and discharge from the unit. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a first-view structural schematic diagram of the filter section in this invention;

[0027] Figure 3 This is a schematic diagram of the structure of the vibration drive shaft and vibration paddle in this invention;

[0028] Figure 4 for Figure 2A magnified structural diagram of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the front and rear pulling mechanism in this invention;

[0030] Figure 6 This is a first-view structural schematic diagram of the bag filter in this invention;

[0031] Figure 7 This is a second-view structural schematic diagram of the bag filter in this invention;

[0032] Figure 8 This is a schematic diagram of the filter section from a second perspective in this invention;

[0033] Figure 9 This is a third-view structural schematic diagram of the filter section in this invention;

[0034] Figure 10 This is a schematic diagram of the enclosed synchronous gear set in this invention.

[0035] In the picture:

[0036] 1. Return air section;

[0037] 11. Air inlet;

[0038] 12. Return air vent;

[0039] 2. Filtering section;

[0040] 21. Bag filter;

[0041] 211. Filter bags;

[0042] 212. Fixed frame;

[0043] 213. Edge strip;

[0044] 2121. Upper ash gap;

[0045] 2122. Ash guiding slope;

[0046] 2131. Connecting perforation;

[0047] 221. Vibration drive shaft;

[0048] 222. Vibrating pick;

[0049] 223. Vibrating drive motor;

[0050] 224. Vibrating synchronous gear set;

[0051] 2241. Vibrating driven gear;

[0052] 225. Rotate the support;

[0053] 231. Sliding base;

[0054] 2321. Synchronizing rod;

[0055] 2322, Synchronization Block;

[0056] 2323, Support;

[0057] 234. Guide rail;

[0058] 235. Limit nut;

[0059] 2351. Guide bolt;

[0060] 2352. Return spring;

[0061] 2361. First pulling drive electric cylinder;

[0062] 2362. Second pulling drive electric cylinder;

[0063] 2363. Connecting plate;

[0064] 241. Sealing plate;

[0065] 242. Enclosed drive motor;

[0066] 243. Enclosed synchronous gear set;

[0067] 2431. Enclosed drive gear;

[0068] 2432. Close the intermediate gear;

[0069] 2433. First enclosed driven gear;

[0070] 2434. Second enclosed driven gear;

[0071] 25. Air guide cover;

[0072] 26. Combination frame;

[0073] 3. Cooling water baffle section;

[0074] 4. Spray humidification section;

[0075] 5. Air supply section. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0077] See attached document Figures 1-10 A modular air conditioning unit includes a casing, within which are a return air section 1, a filter section 2, a surface cooling water baffle section 3, a spray humidification section 4, and an air supply section 5. The air handling sections within the air conditioning unit can be added or removed as needed. The casing contains the return air section 1 and the filter section 2, and the casing has an air inlet 11 and a return air outlet 12 corresponding to the return air section 1. The filter section 2 comprises a combined frame 26 and a bag filter 21, and the combined frame 26 is equipped with at least two sets of bag filters. Each bag filter 21 is fitted with an air guide hood 25. The front and rear sides of the air guide hood 25 are equipped with an openable / closable closure mechanism. The inner side of the air guide hood 25 is equipped with a filter bag pulling mechanism and a vibration mechanism. Specifically, the upper and lower inner walls of the air guide hood are symmetrically equipped with corresponding filter bag pulling mechanisms to ensure the synchronicity of the upward and downward tensioning and loosening of the filter bags. The filter bag pulling mechanism includes a front-to-back pulling mechanism and a left-to-right pulling mechanism. The mechanism is installed at the output end of the left and right pulling mechanism and is used to pull each filter bag 211 of the bag filter 21 in the front-back direction. The left and right pulling mechanism is installed on the inner wall of the air guide hood 25 and is used to pull each filter bag 211 of the bag filter 21 in the left and right direction to tighten and loosen the filter bags 211. In this scheme, the filter bags 211 of the bag filter 21 are flexible and have a certain elasticity. Both the front-back pulling mechanism and the left and right pulling mechanism are within the elastic deformation range of the filter bags. The non-woven fabric of the filter bag is preferably made of polypropylene fiber, spandex fiber or polyester fiber. At the same time, the bottom wall of the filter bag is inclined, and the height of the root of the filter bag is higher than the height of the lower edge of the filter bag opening, so that the dust falling off can roll down under the vibration action of the vibration mechanism. The vibration mechanism drives the vibration paddle 222 to rotate to vibrate the filter bag 211. The combined frame 26 is provided with a dust discharge channel that communicates with the air inlet end of the bag filter 21, and the dust discharge channel is connected to the dust collection hopper.

[0078] In some embodiments, several elastic ribs (not shown in the figure) can be sewn onto the filter bag. Each rib extends along the length of the filter bag, and several elastic ribs are distributed at intervals on the side wall of the filter bag. The two ends of the elastic ribs are fixed to the fixed frame 212 and the side strip 213. The elasticity of the elastic ribs themselves is used to improve the overall elasticity of the filter bag, so that the filter bag can be quickly tightened and loosened under the action of the pulling mechanism.

[0079] In this embodiment, the air outlet side of the air guide hood 25 is connected to a washing pipe, which is connected to the air outlet of the fan; or, the dust collection hopper is connected to a suction pipe, which is connected to the air inlet 11 of the fan. The fan can be an additional independent fan or the fan of the original air supply section 5 of the air conditioning unit. The air outlet side of the air guide hood 25 is connected to the washing pipe, which can introduce clean airflow from the fan outlet into the air guide hood 25 to perform reverse blowing on the filter bag 211, helping to blow off the detached dust and concentrate it in the dust collection hopper. The dust collection hopper is connected to the suction pipe, which can suck out the dust shaken off from the filter bag 211 and discharge it into the dust collection hopper, avoiding dust accumulation. Both solutions can achieve dust discharge.

[0080] In this embodiment, the sealing mechanism includes a sealing plate 241 and a sealing drive motor 242. The front and rear sides of the air guide hood 25 are respectively supported by the sealing plate 241 via rotating shafts. The sealing drive motor 242 is connected to the rotating shafts to drive the sealing plate 241 to flip open and close. The sealing drive motor 242 drives the sealing plate 241 to flip, which can control the opening and closing of the air guide hood 25. During dust cleaning, the sealing plate 241 closes to completely seal the air guide hood 25, preventing dust from escaping during the dust cleaning process. The sealing mechanism includes a front sealing mechanism and a rear sealing mechanism. The sealing plate 241 of the front sealing mechanism is rotatably supported on the combined frame 26 via a rotating shaft. After the sealing plate 241 of the front sealing mechanism is closed, it is spaced apart from the front port of the filter bag 211. This spaced area is located within the fixed frame 212 of the bag filter 21. This spaced area forms an upper ash discharge gap 2121, which is connected to the ash discharge channel. The upper ash discharge gap 2121 between the front sealing plate 241 and the filter bag 211 is connected to the ash discharge channel, allowing detached dust to directly enter the ash discharge channel through this gap. The sealing plate 241 of the rear sealing mechanism is rotatably supported on the air guide hood 25 via a rotating shaft. The sealing drive motor 242 of the front sealing mechanism is fixed to the combined frame 26, and the sealing drive motor 242 of the rear sealing mechanism is fixed to the air guide hood 25. In addition, the fixed frame 212 is provided with downward inclined ash guide ramps 2122 on both sides of the upper ash discharge gap 2121. The downward inclined ash guide ramps 2122 can guide the dust to slide smoothly into the ash discharge channel, avoid the dust from accumulating in the fixed frame 212, and ensure smooth ash discharge.

[0081] In this embodiment, the sealing mechanism includes a pair of sealing plates 241, with rotating shafts fixed to adjacent ends of the pair of sealing plates 241. The rotating shafts of the pair of sealing plates 241 are connected by a sealed synchronous gear set 243, which is driven to rotate by a sealed drive motor 242. Specifically, the sealed synchronous gear set 243 includes a sealed driving gear 2431, a sealed intermediate gear 2432, a first sealed driven gear 2433, and a second sealed driven gear 2434. The sealed driving gear 2431 is mounted on the output shaft of the sealed drive motor 242 and meshes with the sealed intermediate gear 2432 and the second sealed driven gear 2434, respectively. The sealed intermediate gear 2432 is rotatably supported on the combined frame 26 or the air guide hood 25. The first sealed driven gear 2433 is mounted on the rotating shaft of one of the sealing plates 241 and meshes with the sealed intermediate gear 2432. The second sealed driven gear 2434 is mounted on the rotating shaft of the other sealing plate 241. The synchronous opening and closing of a pair of sealing plates 241 is achieved through gear transmission, ensuring consistent sealing performance between the two sealing plates 241 and preventing dust escape due to poor sealing on one side. Only one enclosed drive motor 242 is needed to drive the movement of both sealing plates 241, resulting in a simple structure that reduces control costs and failure rate. The first pulling drive electric cylinder 2361 pushes the synchronizing block 2322 to move back and forth along the guide rail 234, driving the synchronizing rod 2321 to pull all filter bags 211 synchronously, ensuring that each filter bag 211 is subjected to uniform force and preventing damage to the filter bags 211 due to unilateral pulling. The return spring 2352 can automatically rebound the synchronizing block 2322 when the electric cylinder resets, realizing the repeated tightening and loosening of the filter bags 211, which, together with the rapping mechanism, improves the dust removal effect.

[0082] In this embodiment, the front and rear pulling mechanism includes a synchronizing rod 2321, a synchronizing block 2322, a first pulling drive electric cylinder 2361, and a return spring 2352. The synchronizing rod 2321 and the synchronizing block 2322 are spaced apart from top to bottom and are parallel to each other. The two ends of the synchronizing rod 2321 are respectively fixedly connected to the synchronizing block 2322 via supports 2323. The synchronizing rod 2321 is connected to each filter bag 211 of the bag filter 21. The synchronizing block is slidably mounted on a pair of guide rails 234. The pair of guide rails 234 are fixedly mounted on the sliding base 231 along the front and rear direction. The first pulling drive electric cylinder 2361 and the return spring 2352... Springs 2352 are disposed on both sides of the synchronizing block 2322. The first pulling drive electric cylinder 2361 is fixed on the sliding base 231 and its output end is connected to the synchronizing block. The reset spring 2352 is sleeved on the guide bolt 2351 and its two ends abut against the side wall of the synchronizing block 2322 and the sliding base 231 respectively (the front and rear sides of the sliding base 231, i.e., the two sides in the width direction, respectively form upward extending side walls). The guide bolt 2351 is threadedly installed on the side wall of the sliding base 231 (the guide bolt 2351 passes through one side wall of the sliding base 231 and the synchronizing block and is threadedly connected to the other side wall of the sliding base 231).

[0083] In this embodiment, the cross-section of the filter bag 211 is triangular or trapezoidal, so that a gap is formed between adjacent filter bags 211 to facilitate the accommodation of the vibrating drive shaft 221 and the vibrating paddle 222. The opening width of the filter bag 211 is greater than the root width. A side strip 213 is fixed to the root of the filter bag 211. Both the upper and lower ends of the side strip 213 are provided with connecting through holes 2131.

[0084] The synchronizing rod 2321 passes through the connecting holes 2131 of each side strip 213. The synchronizing rod 2321 is located on both sides of the connecting holes 2131 and is threaded with limit nuts 235, which can ensure that the pulling mechanism is firmly connected to the filter bag 211 and the filter bag 211 will not fall off during the pulling process.

[0085] In some other embodiments, the filter bag 211 is fixedly connected to the root of a side strip 213, and the end of the side strip 213 is provided with a connecting through hole 2131;

[0086] The synchronizing rod 2321 fixes the connecting piece to the connecting hole 2131 of each side strip 213. The connecting piece has a connecting fit hole. The side strip 213 and the connecting piece are connected by a tension spring. The spring feet at both ends of the tension spring hook the connecting hole 2131 and the connecting fit hole, which can provide a buffer for the filter bag 211 when it is pulled, avoid damage to the filter bag 211 due to excessive pulling force, and at the same time ensure the effect of the filter bag 211 rebounding and resetting.

[0087] In this embodiment, the left and right pulling mechanism includes a second pulling drive electric cylinder 2362. An L-shaped connecting plate 2363 is fixed to the end of the sliding base 231 between a pair of side walls. The second pulling drive electric cylinder 2362 is fixed to the inner side wall of the air guide hood 25, and its output end is connected to the connecting plate 2363 at the end of the sliding base 231. The second pulling drive electric cylinder 2362 pushes the sliding base 231 to move left and right through the connecting plate 2363, causing the front and rear pulling mechanism and the filter bag 211 to repeatedly tighten and loosen in the left and right directions. This, in conjunction with the front and rear pulling mechanism, achieves multi-directional pulling of the filter bag 211, ensuring that dust from different parts of the filter bag 211 can be fully removed, further improving the dust removal effect. The second pulling drive electric cylinder 2362 can be a double-headed multi-stage electric cylinder, that is, synchronously driving the front and rear pulling mechanisms on both sides to move left and right.

[0088] In this embodiment, the vibration mechanism includes a vibration drive shaft 221, a vibration paddle 222, and a vibration drive motor 223. A vibration drive shaft 221 is provided between adjacent filter bags 211 of the bag filter 21. The vibration drive shaft 221 is vertically arranged, and its two ends are rotatably supported on the top and bottom walls of the air guide hood 25 via rotating supports 225. Each vibration drive shaft 221 is driven by a vibration synchronization gear set 224. The vibration paddle 222 is mounted on the vibration drive shaft 221. Each drive shaft is equipped with a... At least two pairs of vertically arranged vibrating paddles 222 are arranged in a cross shape when viewed from above. The vibrating drive motor 223 is fixed on the air guide shroud 25 and is used to drive the rotation of the vibrating synchronous gear set 224 (the vibrating drive motor 223 is connected to the vibrating drive gear, and each vibrating drive shaft 221 is equipped with a vibrating driven gear 2241. The vibrating drive gear meshes with each vibrating driven gear 2241 through the vibrating intermediate gear, and the vibrating intermediate gear is rotated and supported on the air guide shroud). Multiple vibrating drive shafts 221 rotate synchronously through the synchronous gear set, driving each vibrating paddle 222 to vibrate the filter bag 211 synchronously, ensuring that the vibrating force and frequency of all filter bags 211 are consistent, and the dust removal efficiency is higher. The vibrating drive shafts 221 are vertically arranged between adjacent filter bags 211, which can directly vibrate the inside of the filter bag 211, and the dust removal is highly targeted.

[0089] The vibrating paddle 222 is elongated and has rounded ends. It is a non-circular structure and makes intermittent contact with the filter bag 211. Each contact generates an impact-type vibration force, rather than continuous pressure and friction. This can more effectively cause the filter bag 211 to undergo elastic deformation and shaking, thereby shaking off deeply attached dust. The dust removal efficiency is much higher than that of continuous contact friction cleaning. The rounded ends of the paddle prevent sharp edges from scratching, hooking, or abrading the flexible filter bag 211 during rotation, thus extending the service life of the filter bag 211.

[0090] In this embodiment, the middle beam 2121 and the bottom beam 2122 of the fixed frame 212 are both hollow structures. The top walls of the middle beam 2121 and the bottom beam 2122 have openings that are directly connected to the upper ash discharge gap 2121 (that is, the openings and the inner cavity of the beams together form an ash discharge channel). The interface of the ash collection hopper is plugged into the middle beam 2121 and the bottom beam 2122 through the outer shell. The ash collection hopper has its own filter structure, which can both collect dust and exhaust air.

[0091] Working principle:

[0092] During normal operation, air enters the return air section through the air inlet and return air outlet, and then enters the filtration section. The air passes through the filter bags of the bag filter, where dust and impurities are trapped inside the filter bags, and the clean air is delivered out of the air supply section through the air guide hood.

[0093] During periodic dust removal, the enclosed drive motor drives a pair of sealing plates to flip and close via an enclosed synchronous gear set, completely sealing and isolating the air guide hood that needs cleaning. The remaining open bag filter groups continue normal filtration and air supply, achieving online dust removal without shutting down the unit. Inside the sealed air guide hood, the first pull drive electric cylinder pushes the synchronous block, which, through the synchronous rod and tension spring, moves the filter bag side strips in the front-to-back direction. This, combined with the return spring, achieves reciprocating pulling. The second pull drive electric cylinder drives the entire sliding base to move back and forth on the guide rail, thereby moving the filter bag in the left-to-right direction. The pulling action causes the filter bag to tighten and loosen. Combined with the action of the rapping mechanism, not only does the dust on the inner surface of the filter bag fall off, but the cross-section of the filter bag pores also changes continuously, causing the deeply attached dust to loosen and fall off. The rapping drive motor drives multiple vertical rapping drive shafts to rotate synchronously through a gear set. The long strip-shaped rapping discs on the shafts rotate accordingly. Because the discs are long and not round, they intermittently strike and impact the filter bag during rotation, which, together with the pulling action, completely shakes off the loosened dust. The dust that falls off the filter bag is blown down and collected in the dust collection hopper by the back-blowing action of the blowing pipe.

[0094] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0095] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular air conditioning unit, comprising a housing, wherein a return air section and a filter section are provided inside the housing, and an air inlet and a return air outlet are provided in the housing corresponding to the return air section, characterized in that: The filtration section includes a combined frame and bag filters. The combined frame is equipped with at least two sets of bag filters. Each set of bag filters is fitted with an air guide hood. The front and rear sides of the air guide hood are equipped with openable and closable mechanisms. The inner side of the air guide hood is equipped with a filter bag pulling mechanism and a vibrating mechanism. The filter bag pulling mechanism includes a front-to-back pulling mechanism and a left-to-right pulling mechanism. The front-to-back pulling mechanism is installed at the output end of the left-to-right pulling mechanism and is used to pull each filter bag of the bag filter in the front-to-back direction. The left-to-right pulling mechanism is installed on the inner wall of the air guide hood and is used to pull each filter bag of the bag filter in the left-to-right direction. The vibrating mechanism vibrates the filter bags by driving vibrating discs to rotate. The combined frame is equipped with a dust discharge channel communicating with the air inlet of the bag filters, and the dust discharge channel is connected to a dust collection hopper.

2. The combined air conditioning unit according to claim 1, characterized in that: The air outlet side of the air guide shroud is connected to a blow-washing pipe, and the blow-washing pipe is connected to the air outlet of the fan. Alternatively, the ash collection hopper is connected to a suction pipe, which is connected to the air inlet of a fan.

3. A combined air conditioning unit according to claim 2, characterized in that: The sealing mechanism includes a sealing plate and a sealing drive motor. The front and rear sides of the air guide shroud are respectively supported by the sealing plate via a rotating shaft. The sealing drive motor is connected to the rotating shaft to drive the sealing plate to flip open and close. The sealing mechanism includes a front sealing mechanism and a rear sealing mechanism. The sealing plate of the front sealing mechanism is rotatably supported on the combined frame via a rotating shaft. After the sealing plate of the front sealing mechanism is closed, it is spaced apart from the front port of the filter bag. This spaced area is located within the fixed frame of the bag filter, and an upper ash discharge gap is formed in this spaced area. The upper ash discharge gap is connected to the ash discharge channel. The sealing plate of the rear sealing mechanism is rotatably supported on the air guide hood via a rotating shaft. The sealing drive motor of the front sealing mechanism is fixed on the combined frame, and the sealing drive motor of the rear sealing mechanism is fixed on the air guide hood.

4. A combined air conditioning unit according to claim 3, characterized in that: The sealing mechanism includes a pair of sealing plates, with a rotating shaft fixed to each adjacent end of the pair of sealing plates. The rotating shafts of the pair of sealing plates are driven by a closed synchronous gear set, which is driven to rotate by a closed drive motor.

5. A combined air conditioning unit according to claim 1, characterized in that: The front and rear pulling mechanism includes a synchronizing rod, a synchronizing block, a first pulling drive cylinder, and a return spring. The synchronizing rod and the synchronizing block are spaced apart from top to bottom and are parallel to each other. The two ends of the synchronizing rod are fixedly connected to the synchronizing block through supports. The synchronizing rod is connected to each filter bag of the bag filter. The synchronizing block is slidably mounted on a pair of guide rails. The pair of guide rails are fixed to a sliding base along the front and rear direction. The first pulling drive cylinder and the return spring are respectively located on both sides of the synchronizing block. The first pulling drive cylinder is fixed to the sliding base and its output end is connected to the synchronizing block. The return spring is sleeved on a guide bolt and its two ends abut against the side walls of the synchronizing block and the sliding base, respectively. The guide bolt is threaded onto the side wall of the sliding base.

6. A combined air conditioning unit according to claim 5, characterized in that: The filter bag has a triangular or trapezoidal cross-section, the opening width of the filter bag is greater than the root width, the root of the filter bag is fixed with a side strip, and the end of the side strip is provided with a connecting perforation. The synchronizing rod passes through the connecting holes of each edge strip, and the synchronizing rod is threaded with limit nuts on both sides of the connecting holes.

7. A combined air conditioning unit according to claim 6, characterized in that: The filter bag is fixed to the root with a side strip, and the end of the side strip is provided with a connecting hole; The synchronizing rod is fixed with connecting plates through the connecting holes of each side strip. The connecting plates have connecting and mating holes. The side strips and connecting plates are connected by a tension spring. The spring feet at both ends of the tension spring hook onto the connecting holes and the connecting and mating holes, respectively.

8. A combined air conditioning unit according to claim 6 or 7, characterized in that: The left and right pulling mechanism includes a second pulling drive electric cylinder. An L-shaped connecting plate is fixed between a pair of side walls at the end of the sliding base. The second pulling drive electric cylinder is fixed on the inner side wall of the air guide shroud and its output end is connected to the connecting plate at the end of the sliding base.

9. A combined air conditioning unit according to claim 1, characterized in that: The rapping mechanism includes a rapping drive shaft, a rapping paddle, and a rapping drive motor. A rapping drive shaft is provided between adjacent filter bags of the bag filter. The rapping drive shaft is vertically arranged and its two ends are rotatably supported on the top and bottom walls of the air guide shroud. The rapping drive shafts are driven by a rapping synchronous gear set. The rapping paddle is installed on the rapping drive shaft. The rapping drive motor is fixed on the air guide shroud and is used to drive the rapping synchronous gear set to rotate.

10. A combined air conditioning unit according to claim 9, characterized in that: The vibrating paddle is long and narrow, with rounded ends.

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