Device for replacing filter element in air conditioner

Abstract

The invention discloses an air conditioner inner filter element replacing device, and relates to the technical field of engineering machinery air conditioner units. Two filter element bodies are installed in two filter element loading cavities formed in a circular truncated cone correspondingly, one filter element body is used normally, and the other filter element body is used for standby application; an energy supply mechanism in the air outlet pipe is used for supplying power to an energy storage mechanism, and a limiting mechanism is matched for locking a circular truncated cone, so that after one of the filter element main bodies is used and lost, the new and old filter element main bodies can be subjected to accurate position replacement through rotation of the circular truncated cone; the filter element body which is used and lost is replaced outside the air inlet channel for replacement operation, an air conditioner unit of the engineering machine does not need to be shut down in the replacement process, operation of the engineering machine cannot be disturbed, and the convenience and high efficiency of replacing the filter element body of the device are improved to a certain degree.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery air conditioning units, and in particular to a device for replacing an inner filter element of an air conditioner. Background Art

[0002] In all kinds of existing engineering construction, construction machinery is widely used. It often works continuously in harsh environments such as mines and construction sites. Therefore, the air-conditioning system of construction machinery plays a vital role in ensuring the working comfort of operators and the stability of equipment operation. Among them, the filter element is a key component of the air-conditioning unit, which is responsible for filtering pollutants such as dust and impurities in the air.

[0003] The current engineering machinery air-conditioning internal filter has exposed many problems in actual use, which is mainly reflected in the inconvenience of replacement. Since engineering machinery is in a harsh environment with dust and strong wind for a long time, a large amount of dust, debris and other pollutants will quickly accumulate on the air-conditioning internal filter during operation, causing the filter to be easily blocked. This greatly shortens the service life of the air-conditioning internal filter, and then leads to frequent replacement of the filter. The existing engineering machinery air-conditioning unit usually adopts a single filter filtering working mode. When replacing the filter, the equipment needs to be shut down. Frequent shutdown to replace the filter will lead to frequent start and stop of the engineering machinery, which is not only cumbersome to operate, but also easy to affect the overall engineering efficiency.

[0004] To this end, an air conditioner inner filter replacement device is proposed to solve some problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of inconvenience in replacing the filter element inside the air-conditioning unit of engineering machinery in the prior art. The equipment needs to be shut down when replacing the filter element, which is not only cumbersome to operate but also easily affects the overall engineering efficiency. A device for replacing the filter element inside the air-conditioning is proposed.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: An air conditioner inner filter replacement device comprises a housing, a first carrier plate and a second carrier plate located behind the first carrier plate are fixed in the housing, a filter channel connected front and back and a spare channel connected front and back are fixed on the first carrier plate and the second carrier plate, a round table is rotatably installed between the first carrier plate and the second carrier plate, and two filter element loading cavities corresponding to the filter channel and the spare channel are respectively arranged on the round table, a filter element main body is filled in each filter element loading cavity, the front of the housing is covered with a first cover plate, and an air intake pipe connected to the filter channel is arranged on the first cover plate, and a window connected to the spare channel, the back of the shell is covered with a second cover plate, and an air outlet pipe connected to the filtering channel is fixed on the second cover plate, a sealing box is plugged into the front end of the spare channel, an energy supply mechanism and an energy storage mechanism are arranged in the shell, the energy storage mechanism includes an outer gear ring fixed around the cylindrical surface of the truncated cone, a second gear meshing with the outer gear ring and a rotating wheel coaxially arranged with the second gear are rotatably installed in the shell, a spring is connected between the second gear and the rotating wheel, a transmission mechanism is arranged between the rotating wheel and the energy supply mechanism, and a limiting mechanism for limiting the rotation of the truncated cone is installed in the shell.

[0007] Preferably, the energy supply mechanism includes a cylinder rotatably mounted in the end wall of the exhaust pipe, and a turbofan is fixedly mounted in the cylinder, a tooth groove is arranged around the cylindrical surface of the cylinder, and a first gear is meshed on the outer side of the tooth groove, and a transmission mechanism is arranged between the first gear and the rotor.

[0008] Preferably, the transmission mechanism includes a third gear coaxially connected to the first gear, and the outer side of the third gear is meshed with a gear ring, the outer side of the gear ring is meshed with a fourth gear coaxially connected to the rotating wheel, a ratchet arranged on the inner side of the gear ring is rotatably installed in the shell, and a first spring for elastically supporting the ratchet, and the ratchet is tilted and engaged with the inner side of the gear ring.

[0009] Preferably, a magnetic coupling is provided between the first gear and the third gear.

[0010] Preferably, the limiting mechanism includes a limiting groove opened on the cylindrical surface of the truncated cone, a sliding rod is slidably installed in the shell, and symmetrically arranged sleeves are fixed at both ends of the sliding rod, a limiting rod adapted to the limiting groove is slidably inserted in the sleeve, and a second spring elastically supported between the sleeve and the limiting rod is sleeved on the outer side of the limiting rod.

[0011] Preferably, a roller is rotatably mounted on one end of the limiting rod close to the truncated table.

[0012] Preferably, an air flow meter is fixedly installed in the air outlet pipe, an electric push rod arranged side by side with the slide rod is fixedly installed in the shell, and the telescopic end of the electric push rod is fixedly connected to the slide rod.

[0013] Preferably, an auxiliary dust removal mechanism is installed in the shell, and the auxiliary dust removal mechanism includes a circular ring rotatably installed in the shell, and an inner gear ring is fixed on the circular ring, and a fifth gear coaxially connected to the first gear is meshed on the inner side of the inner gear ring, a plurality of knocking seats correspondingly arranged on the rotating trajectory of the circular ring are fixed in the shell, and a knocking column is slidably inserted in the knocking seat, and a tension spring elastically connected between the knocking seat and the knocking column is sleeved on the outer side of the knocking column, a first magnet is fixed in the knocking column, and a large number of evenly distributed second magnets are fixed around the circular ring, and the magnetic poles of two adjacent second magnets are facing opposite directions.

[0014] Preferably, the interior of the sealing box is configured as a hollow structure, a large-sized opening is provided on the end wall of the sealing box close to the filter element loading chamber, a plurality of evenly distributed exhaust holes are provided on the end wall of the sealing box away from the filter element loading chamber, and a backblowing pipe connected to the spare channel is fixed on the second cover plate.

[0015] Preferably, the connection between the air outlet pipe and the filter channel, and the connection between the backflush pipe and the standby channel are both configured as spiral structures.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, two filter element bodies are respectively installed in two filter element loading cavities opened on the round table, one of the filter element bodies is used normally, and the other filter element body is used as a spare. The energy supply mechanism in the air outlet pipe is used to supply power to the energy storage mechanism, and the round table is locked with the limit mechanism. When one of the filter element bodies is worn out, the device can accurately replace the old and new filter element bodies by rotating the round table, and replace the worn filter element body to the outside of the air inlet channel for replacement. During the replacement process, there is no need to shut down the air conditioning unit of the engineering machinery, and the operation of the engineering machinery will not be disturbed, which improves the convenience and efficiency of replacing the filter element body of the device to a certain extent. 2. In the present invention, a limit mechanism is used to limit the rotation of the round table. After the sliding rod in the limit mechanism is toggled once, not only can the rotation restriction of the round table be released, but also the energy storage mechanism can provide dynamic support for the rotation of the round table at any time, so that after the round table rotates 180°, the limit mechanism can automatically re-limit the round table, which can not only greatly improve the convenience of replacing two filter element bodies by rotating the round table, but also ensure the accuracy of docking the new and old filter element bodies with the filter channel after the position is replaced, which is conducive to further improving the convenience of operation during the actual use of the device; 3. In the present invention, by installing an air flow meter in the air outlet pipe and installing an electric push rod in the housing to control the reciprocating movement of the slide rod, the air flow meter can control the electric push rod to automatically adjust the limit mechanism after monitoring that the air intake volume in the air outlet pipe is lower than the threshold value, so as to realize the automatic replacement operation of the two filter element bodies. In combination with the auxiliary dust removal mechanism provided in the device, the device can have two different usage modes. One is to replace the old filter element body in time after the position of the filter element body is replaced, and the other is to greatly extend the service life of the filter element body in a high dust and gravel working environment through automatic cycle replacement and automatic dust removal and cleaning of the two filter element bodies. Flexible adjustment according to actual working conditions can improve the control flexibility and diversity of the device to a certain extent. 4. By connecting the backblowing pipe with the air outlet of the engineering machinery air-conditioning unit and setting the electric control valve in the backblowing pipe, when the device uses the auxiliary dust removal mechanism to clean and restore the blocked filter element body, the airflow can be reversely introduced through the backblowing pipe to blow toward the blocked filter element body to backblow and clean the filter element body. Combined with the vibration and knocking method, the effect of cleaning and restoring the blocked filter element body can be greatly improved. At the same time, by setting the connection between the backblowing pipe and the spare channel to a spiral structure, the backblowing airflow in the backblowing pipe can be more evenly dispersed and blown toward the filter element body with the help of the spiral dispersion of the connection position, which is convenient for more comprehensive backblowing and cleaning of the blocked filter element body, and to a certain extent improves the stability of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a split diagram of the present invention; Figure 2 A perspective view of the present invention; Figure 3 It is a front view of the present invention; Figure 4 For the present invention Figure 3 Sectional view at AA in the middle; Figure 5 For the present invention Figure 3 Sectional view at the middle BB; Figure 6 For the present invention Figure 3 Sectional view at CC; Figure 7 It is a cross-sectional view of the limiting rod of the present invention being inserted into the limiting groove; Figure 8 It is a cross-sectional view of the limiting rod of the present invention not being stuck in the limiting groove; Fig. 9 It is a cross-sectional view of the present invention from the back side perspective; Fig.10 The figure is a disassembled diagram of the second gear, the rotating wheel and the mainspring of the present invention; Fig.11 is a three-dimensional diagram of the gear ring, the pawl and the first spring of the present invention; Fig.12 A three-dimensional diagram of the slide bar and two sleeves of the present invention; Fig.13 A three-dimensional diagram of a circular ring and a plurality of knocking posts of the present invention; Fig.14 It is a stereoscopic diagram of the connection between the air outlet pipe and the filter channel and the connection between the backflush pipe and the spare channel of the present invention.

[0018] Serial number in the picture: 1. Shell; 101. First carrier plate; 102. Second carrier plate; 103. Filter channel; 104. Spare channel; 105. Round table; 106. Filter element loading chamber; 107. Filter element body; 108. First cover plate; 109. Air inlet pipe; 110. Second cover plate; 111. Air outlet pipe; 112. Sealing box; 2. Cylinder; 201. Turbofan; 202. Tooth groove; 203. First gear; 3. outer gear ring; 301. second gear; 302. rotating wheel; 303. mainspring; 4. third gear; 401. gear ring; 402. fourth gear; 403. pawl; 404. first spring; 405. magnetic coupling; 5. Limiting groove; 501. Sliding rod; 502. Sleeve; 503. Limiting rod; 504. Second spring; 505. Roller; 506. Electric push rod; 6. annular ring; 601. inner gear ring; 602. fifth gear; 603. striking seat; 604. striking column; 605. tension spring; 7. Backflush pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Embodiment: This embodiment provides an air conditioner inner filter replacement device, see Figure 1 - Fig.14Specifically, it includes a shell 1, a first carrier plate 101 is fixed in the shell 1, and a second carrier plate 102 is located behind the first carrier plate 101, a filter channel 103 connected front and back, and a spare channel 104 connected front and back are fixed on the first carrier plate 101 and the second carrier plate 102, a round table 105 is rotatably installed between the first carrier plate 101 and the second carrier plate 102, and two filter element loading cavities 106 corresponding to the filter channel 103 and the spare channel 104 are respectively arranged on the round table 105, and each filter element loading cavity 106 is filled with a filter element main body 107, the front of the shell 1 is covered with a first cover plate 108, and the first cover plate 108 is provided with an intake pipe 109 connected with the filter channel 103 , and a window connected to the spare channel 104, the back of the shell 1 is covered with a second cover plate 110, and the second cover plate 110 is fixed with an outlet pipe 111 connected to the filter channel 103, and the front end of the spare channel 104 is plugged with a sealing box 112, and an energy supply mechanism and an energy storage mechanism are arranged in the shell 1, the energy storage mechanism includes an outer gear ring 3 fixed around the cylindrical surface of the truncated table 105, a second gear 301 meshing with the outer gear ring 3 and a rotating wheel 302 coaxially arranged with the second gear 301 are rotatably installed in the shell 1, a spring 303 is connected between the second gear 301 and the rotating wheel 302, a transmission mechanism is arranged between the rotating wheel 302 and the energy supply mechanism, and a limiting mechanism for limiting the rotation of the truncated table 105 is installed in the shell 1.

[0021] When the device is in use, the device is installed in the air-conditioning unit in the engineering machinery, and the intake air of the air-conditioning unit is filtered through the filter element main body 107 in the device. During use, the air outlet pipe 111 is connected to the air inlet end of the mechanical engineering air-conditioning unit. Under normal circumstances, under the restriction of the limiting mechanism, the table 105 is restricted from rotating, so that the filter element main body 107 in one of the filter element loading cavities 106 maintains a stable docking state with the filter channel 103. When the air-conditioning unit is in operation, the outside air enters through the air inlet pipe 109 and then enters the filter channel 103. The airflow passes through the filter element main body 107 in the filter element loading cavity 106 corresponding to the filter channel 103. After being filtered by the filter element main body 107, it is introduced into the air-conditioning unit through the air outlet pipe 111 at the rear, thereby realizing the filtering and purification operation of the intake air of the mechanical engineering air-conditioning unit.

[0022] When the airflow flows in the air outlet pipe 111, it will drive the energy supply mechanism to start and transfer power to the energy storage mechanism. The energy supply mechanism drives the rotating wheel 302 to rotate. Since the truncated table 105 is controlled by the limiting mechanism and cannot rotate, the second gear 301 is also unable to rotate during the process of the limiting mechanism locking the truncated table 105 due to the meshing of the second gear 301 and the outer gear ring 3. The inner end of the spring 303 is fixedly connected to the axis of the second gear 301, and the outer end of the spring 303 is fixedly connected to the rotating wheel 302. With the help of the rotation of the rotating wheel 302, the spring 303 is tightened. To store rotational power, after the device has been running for a period of time, due to the harsh operating environment of the engineering machinery, the filter element main body 107 corresponding to the intake pipe 109 will accumulate a large amount of dust and impurities on the side close to the intake pipe 109 after filtering the incoming airflow for a long time. The accumulation of a large amount of dust and impurities will not only cause the air filtration effect of the filter element main body 107 to deteriorate, but also easily lead to air intake blockage, affecting the air intake stability of the mechanical engineering air-conditioning unit. At this time, the staff needs to replace the filter element main body 107 corresponding to the intake pipe 109 in time.

[0023] When the staff uses the device to replace the filter element main body 107, they only need to operate the limiting mechanism to release the rotation restriction of the round table 105, so that the round table 105 can rotate between the first supporting plate 101 and the second supporting plate 102. In this state, since the second gear 301 can rotate normally, the kinetic energy accumulated in the spring 303 is released, and the spring 303 drives the second gear 301 to rotate. With the help of the meshing transmission between the second gear 301 and the outer gear ring 3, the rotational power is transmitted to the unrestricted round table 105, driving the round table 105 to rotate. After the round table 105 rotates 180°, the limiting mechanism re-restricts the rotation of the round table 105. By rotating the round table 105 180°, the filter element loading chambers 106 symmetrically arranged on the two central axes are replaced in position, and the unused filter element main body 107 is replaced with the used filter element main body 107 corresponding to the intake pipe 109, completing the filtration. During the replacement operation of the core body 107, since the filter core body 107 is always in the corresponding position in the filter channel 103, the mechanical engineering air-conditioning unit does not need to be shut down when replacing the filter core body 107. When the new filter core body 107 is replaced with the old filter core body 107, the staff can remove the sealing box 112 and open the window on the first cover plate 108. Then the staff can take out and replace the used filter core body 107 in the filter core loading cavity 106 through the front end of the spare channel 104, so as to prepare for the replacement operation of the filter core bodies 107 in the subsequent two filter core loading cavities 106.

[0024] During the operation of the device, two filter element bodies 107 are respectively installed in two filter element loading chambers 106 opened on the truncated table 105, one of the filter element bodies 107 is used normally, and the other filter element body 107 is used as a spare. The energy supply mechanism in the air outlet pipe 111 is used to supply power to the energy storage mechanism, and the truncated table 105 is locked with the limit mechanism. When one of the filter element bodies 107 is worn out, the truncated table 105 can be rotated to replace it with the other spare filter element body 107, and the worn filter element body 107 is replaced to the outside of the air intake channel for replacement. During the replacement of the filter element body 107, there is no need to shut down the air conditioning unit of the engineering machinery, which improves the convenience and efficiency of replacing the filter element body 107 of the device to a certain extent.

[0025] In the specific implementation process, Figure 1 , Figure 4 , Figure 6 , Fig. 9 and Fig.11 As shown, the energy supply mechanism includes a cylinder 2 rotatably mounted in the end wall of the exhaust pipe 111, and a turbofan 201 is fixedly mounted in the cylinder 2, a tooth groove 202 is arranged around the cylindrical surface of the cylinder 2, and a first gear 203 is meshed on the outer side of the tooth groove 202, a transmission mechanism is arranged between the first gear 203 and the rotating wheel 302, the transmission mechanism includes a third gear 4 coaxially connected to the first gear 203, and a gear ring 401 is meshed on the outer side of the third gear 4, and a fourth gear 402 coaxially connected to the rotating wheel 302 is meshed on the outer side of the gear ring 401, a ratchet 403 arranged on the inner side of the gear ring 401 and a first spring 404 for elastically supporting the ratchet 403 are rotatably mounted in the housing 1, and the ratchet 403 is obliquely engaged with the inner side of the gear ring 401.

[0026] When the device is used, after the air conditioning unit of the engineering machinery is started, the airflow in the external environment enters the air conditioning unit through the connection of the air inlet pipe 109, the filter channel 103 and the air outlet pipe 111. In this process, the high-speed flow of the airflow will drive the turbofan 201 to rotate, drive the cylinder 2 and the tooth grooves 202 arranged around the cylindrical surface thereof to rotate synchronously, and then with the help of the meshing of the tooth grooves 202 and the first gear 203, the rotational power is transmitted to the first gear 203, and the first gear 203 drives the third gear 4 to rotate, and then with the help of the meshing of the third gear 4 and the ring gear 401, the ring gear 401 is driven to rotate, and with the help of the meshing of the ring gear 401 and the fourth gear 402, the rotational power is transmitted to the first gear 203. The rotational power is transmitted to the fourth gear 402, and then to the rotating wheel 302, to supply energy to the energy storage mechanism. During the rotation of the ring gear 401, the pawl 403 is elastically supported by the first spring 404 and is overall tilted and engaged in the inner teeth of the ring gear 401, so that the ring gear 401 can only rotate in one direction. When the intake air disappears and the rotation drive at the turbofan 201 is released, the elastic energy formed by the winding of the spring 303 cannot drive the ring gear 401 to rotate in the opposite direction, so that the spring 303 can store kinetic energy stably, so as to provide a stable power supply for driving the table 105 to rotate when the filter element body 107 of the device is replaced.

[0027] In the specific implementation process, Figure 1 and Figure 4 As shown, a magnetic coupling 405 is provided between the first gear 203 and the third gear 4. When the device is used, the magnetic coupling 405 is used to connect the first gear 203 and the third gear 4 for power transmission, so that under normal circumstances, the first gear 203 can drive the third gear 4 to rotate synchronously during rotation, and the spring 303 is wound up to store energy. When the spring 303 is wound up to the limit state, the wheel 302 cannot continue to rotate, and the third gear 4 cannot continue to rotate due to the meshing of the teeth. At this time, the power provided by the turbofan 201 driven by the airflow to rotate is transmitted to the first gear 203, which will generate a huge torque at the magnetic coupling 405 to overcome the The magnetic connection between the two parts of the magnetic coupling 405 allows the two parts in the magnetic coupling 405 to rotate relative to each other, so that after the spring 303 is wound to the limit state, the first gear 203 can rotate relative to the third gear 4, so that the turbofan 201 can rotate independently, which can avoid the turbofan 201 from stopping in the air outlet pipe 111 due to the spring 303 being wound to the limit state. Through the connection of the magnetic coupling 405, the turbofan 201 can still rotate in the air outlet pipe 111 after the spring 303 is wound to the limit state, which is beneficial to reduce the obstruction of the turbofan 201 to the intake air flow in the air outlet pipe 111, and to a certain extent ensure the operating stability of the device.

[0028] In the specific implementation process, Figure 1 , Figure 5, Figure 7 - Figure 8 and Fig.12 As shown, the limiting mechanism includes a limiting groove 5 opened on the cylindrical surface of the table 105, a sliding rod 501 is slidably installed in the shell 1, and symmetrically arranged sleeves 502 are fixed at both ends of the sliding rod 501, a limiting rod 503 adapted to the limiting groove 5 is slidably inserted in the sleeve 502, and a second spring 504 elastically supported between the sleeve 502 and the limiting rod 503 is sleeved on the outer side of the limiting rod 503, and a roller 505 is rotatably installed on one end of the limiting rod 503 close to the table 105. When the device is used, the staff uses the limiting mechanism to limit the rotation of the table 105. After the sliding rod 501 in the limiting mechanism is turned once, not only can the rotation restriction of the table 105 be released, but when the table 105 rotates 180°, the limiting mechanism can automatically re-restrict the table 105.

[0029] like Figure 7 As shown, in the initial state, the limit rod 503 and the rotationally mounted roller 505 at its end position are engaged in the limit groove 5 opened on the cylindrical surface of the round table 105. At this time, the round table 105 cannot be driven to rotate, and the second springs 504 at the upper right and lower left are in an uncompressed state. When the two filter element bodies 107 need to be replaced, the staff pushes the slide bar 501 to drive the two sleeves 502 fixed at both ends to move synchronously to the upper right. Along with the movement of the two sleeves 502, the limit rod 503 at the upper right is in the second spring 504. When the connection is connected, the roller 505 installed at its end is driven to rotate and withdraw from the limit groove 5. The limit rod 503 at the lower left cannot move because it is blocked by the cylindrical surface of the truncated table 105. As a result, the sleeve 502 at the lower left moves to the upper right, and it will contract relative to the limit rod 503, squeezing the second spring 504 at the lower left. In this state, the limit mechanism releases the rotation restriction on the truncated table 105, and the truncated table 105 rotates under the power released by the energy storage mechanism. When the truncated table 105 rotates 180°, the two filter element bodies 107 complete the replacement operation.

[0030] Synchronously, since the truncated table 105 has been rotated 180°, the limiting slot 5 originally in the upper right position follows the rotation of the truncated table 105 and is transferred to the lower left position. Since the second spring 504 in the lower left position is in a compressed state, when the limiting slot 5 rotates to the lower left position and is aligned with the limiting rod 503 and the roller 505, the cylindrical surface of the truncated table 105 loses the obstruction to the limiting rod 503 and the roller 505, and is reset with the elastic support of the second spring 504, so that the limiting rod 503 and the roller 505 in the lower left position are automatically engaged in the limiting slot 5 rotated to the lower left position, and the rotation of the truncated table 105 is restricted again. After the limiting rod 503 and the roller 505 are engaged in the limiting groove 5 rotated to the lower left, the second spring 504 returns to its initial state and is no longer compressed. At this time, the second spring 504 on the upper right is also in an uncompressed state. When the positions of the two filter element bodies 107 are replaced again later, it is only necessary to slide the slide bar 501 to the lower left. By manipulating the reciprocating sliding of the slide bar 501, the rotation restriction of the round table 105 can be released and subsequently automatically locked. The operation is convenient and can ensure that the round table 105 is automatically locked after rotating 180°. To a certain extent, the accuracy and stability of the device when replacing the two filter element bodies 107 are improved.

[0031] In the specific implementation process, Figure 4 , Figure 6 and Fig. 9 As shown, an air flow meter is fixedly installed in the air outlet pipe 111, and an electric push rod 506 arranged side by side with the slide bar 501 is fixedly installed in the shell 1, and the telescopic end of the electric push rod 506 is fixedly connected to the slide bar 501. When the device is in use, it can be connected to the control module of the engineering machinery. The air flow meter installed in the air outlet pipe 111 can monitor the ventilation volume in the air outlet pipe 111 in real time. When the filter element main body 107 corresponding to the air inlet pipe 109 can filter the airflow normally, the airflow velocity in the air outlet pipe 111 should be relatively large. As the engineering machinery continues to operate in a harsh working environment, the filter element main body 107 corresponding to the air inlet pipe 109 filters the airflow entering the air conditioning unit for a long time, resulting in its close contact with the air inlet pipe 109. One side of the air inlet pipe 109 is gradually blocked by dust impurities. During this process, the efficiency of the air flow passing through the filter element main body 107 is slowly reduced, causing the air flow monitored by the air flow meter in the outlet pipe 111 to decrease. The air flow meter is provided with a monitoring threshold. When the air flow in the outlet pipe 111 is lower than the threshold, it indicates that the filter element main body 107 corresponding to the air inlet pipe 109 is in a state of being blocked by dust and difficult to use normally. The signal is sent to the control module by the air flow meter, and then the control module controls the electric push rod 506 to be powered on and started, simulating the way in which the staff moves the slide bar 501, driving the slide bar 501 to move, changing the state of the limit mechanism, so that the device automatically realizes the replacement operation of the two filter element main bodies 107.

[0032] When the device automatically replaces the positions of the two filter element bodies 107, a reminder message will be displayed on the relevant display device to remind the staff to remove the sealing box 112 in time and replace the used filter element body 107 through the front end of the spare channel 104. During the use of the device, the staff can manually adjust the limit mechanism to achieve the replacement operation of the two filter element bodies 107, or can control it through the electric push rod 506 to automatically achieve the replacement of the two filter element bodies 107. The operation is convenient and to a certain extent improves the control flexibility and diversity of the device during actual use.

[0033] In the specific implementation process, Figure 1 , Figure 4 - Figure 6 and Fig.13 As shown, an auxiliary dust removal mechanism is installed in the shell 1, and the auxiliary dust removal mechanism includes a ring 6 rotatably installed in the shell 1, and an inner gear ring 601 is fixed on the ring 6, and the inner side of the inner gear ring 601 is meshed with a fifth gear 602 coaxially connected to the first gear 203, a plurality of knocking seats 603 correspondingly arranged on the rotating trajectory of the ring 6 are fixed in the shell 1, and a knocking column 604 is slidably inserted in the knocking seat 603, and a tension spring 605 elastically connected between the knocking seat 603 and the knocking column 604 is sleeved on the outer side of the knocking column 604, a first magnet is fixed in the knocking column 604, and a large number of evenly distributed second magnets are fixed around the ring 6, and the magnetic poles of two adjacent second magnets are facing opposite directions.

[0034] When the device is in use, it has two usage modes. One is that after the positions of the two filter element bodies 107 are replaced, the staff directly replaces the used filter element body 107. The other is that after the positions of the two filter element bodies 107 are replaced, the device uses an internal auxiliary dust removal mechanism to clean the used filter element body 107 to extend the service life of the filter element body 107, and then the cleaned filter element body 107 is re-inserted into the corresponding position of the intake pipe 109 during the next replacement. The two filter element bodies 107 are used alternately and self-cleaned alternately to achieve cyclic replacement, thereby greatly extending the period of manual replacement of the filter element body 107 by the staff. In this mode, when replacing the filter element body 107, the two filter element bodies 107 need to be replaced at the same time.

[0035] The second usage mode is based on the operation of engineering machinery in a harsh environment with a lot of dust and gravel in the air. In this environment, when the air-conditioning unit in the engineering machinery is running, the filter element main body 107 corresponding to the air intake pipe 109 will accumulate a large amount of dust and gravel inside after a short period of use, affecting normal filtration. The dust and gravel adhere to the filter element main body 107 on the side close to the air intake pipe 109, which will cause blockage to the filter element main body 107 and affect the normal air intake operation. However, most of the dust and gravel accumulated in the filter element main body 107 can be cleaned out through reverse vibration and knocking and other operations, so that the filter element main body 107 can be restored to a state where it can be used again, thereby extending the actual service life of the filter element main body 107.

[0036] During the operation of the second usage mode, the turbofan 201 in the outlet pipe 111 continues to rotate under the impetus of the intake air flow, and can not only provide power to the energy storage mechanism through the transmission mechanism, but also drive the fifth gear 602 to rotate during the rotation of the first gear 203. When the air flow meter in the outlet pipe 111 detects that the intake air volume in the outlet pipe 111 is reduced to a threshold value, the control module controls the limit mechanism to change. Driven by the energy storage mechanism, the table 105 rotates 180°, and the intact filter element body 107 and the blocked filter element body 107 are replaced in position. The filter element body 107 blocked by dust and gravel is replaced to a position corresponding to the spare channel 104 and is no longer connected to the intake pipe 109. At this time, the intact filter element body 107 is cut into a state of docking with the intake pipe 109 to perform intake filtering operation. The blocked filter element body 107 no longer passes through the intake air flow. In this state, the auxiliary dust removal mechanism is used to restore the blocked filter element body 107.

[0037] During the startup of the auxiliary dust removal mechanism, with the help of the meshing of the inner gear ring 601 and the fifth gear 602, the rotation of the fifth gear 602 will drive the inner gear ring 601 and the circular ring 6 to rotate. Since the circular ring 6 is fixedly inlaid with a large number of second magnets distributed in a surrounding manner, and the magnetic poles of two adjacent second magnets are facing opposite directions, during the rotation of the circular ring 6, these second magnets will pass through each knocking column 604 in an orderly manner. Since each knocking column 604 is installed with a first magnet, when the second magnet passes through the first magnet, if the magnetic poles of the second magnet and the proximal end of the first magnet are the same, the second magnet will produce magnetic repulsion to the first magnet, driving the knocking column 604 to move away from the circular ring 6. If the first magnet is located at the same pole as the proximal end of the first magnet, the second magnet will produce magnetic repulsion to the first magnet, driving the knocking column 604 to move away from the circular ring 6. If the magnetic poles of the second magnet are different from those of the first magnet, the second magnet will produce magnetic attraction to the first magnet, driving the knocking column 604 to approach the ring 6, thereby forming a motion mode in which the knocking column 604 moves back and forth during the rotation of the ring 6. When the knocking column 604 moves toward the ring 6, it will overcome the elastic connection of the tension spring 605 and pull the tension spring 605 to deform. When the magnetic attraction is released, with the help of the magnetic repulsion and the elastic reset of the tension spring 605, the knocking column 604 will be driven to quickly collide with the inside of the knocking seat 603, forming a strong oscillation through the collision, and the dust and gravel blocked on the filter element main body 107 are discharged, thereby realizing the automatic restoration operation of the blocked filter element main body 107.

[0038] In the specific implementation process, Figure 4 As shown, the interior of the sealing box 112 is set as a hollow structure, and a large-sized through hole is opened on the end wall of the sealing box 112 on one side close to the filter element loading chamber 106, and a plurality of evenly distributed exhaust holes are opened on the end wall of the sealing box 112 away from the filter element loading chamber 106. A backflush pipe 7 connected to the spare channel 104 is fixed on the second cover plate 110. When the device is used, the backflush pipe 7 can be connected to the air outlet of the engineering machinery air-conditioning unit, and an electric control valve can be set in the backflush pipe 7. When the auxiliary dust removal mechanism is used to clean and restore the blocked filter element main body 107, during the oscillation dust removal and grit removal process, the electric control valve is opened, and the airflow at the air outlet of the air-conditioning unit can be reversely introduced into the blocked filter element main body 107 through the backflush pipe 7. By blowing reverse airflow and vibrating and knocking, the effect of cleaning and restoring the blocked filter element main body 107 can be greatly improved. The sealing box 112 is set to a hollow structure, and the end wall of the sealing box 112 on one side close to the filter element loading chamber 106 is set to a through opening, so that the sealing box 112 can support and block the blocked filter element main body 107 corresponding to the spare channel 104, and can also provide storage space for the oscillation separation of dust and gravel. The dust and gravel reversely cleaned out of the blocked filter element main body 107 will temporarily remain in the hollow structure of the sealing box 112, which is convenient for the staff to clean when replacing the filter element main body 107, and the exhaust hole opened on the sealing box 112 can ensure the smooth flow of the back-blowing airflow in the back-blowing pipe 7.

[0039] In the specific implementation process, Figure 4 and Fig.14 As shown, the connection between the air outlet pipe 111 and the filter channel 103, and the connection between the backflush pipe 7 and the spare channel 104 are both set to a spiral structure. When the device is in use, by setting the connection between the air outlet pipe 111 and the filter channel 103 to a spiral structure, with the help of the guidance of the spiral structure here, the intake air flow can form a spiral flow pattern when entering the air outlet pipe 111, so that it is convenient for it to blow toward the turbofan 201 with a spiral inclination trend, providing stronger power for pushing the turbofan 201. The connection between the backflush pipe 7 and the spare channel 104 is set to a spiral structure in order to use the spiral dispersion of the connection position to more evenly disperse the backflush airflow in the backflush pipe 7 to blow toward the blocked filter element main body 107 corresponding to the spare channel 104, so as to facilitate more comprehensive backflush cleaning of the blocked filter element main body 107, thereby improving the stability of the device during operation to a certain extent.

[0040] Specifically, the working principle and operation method of the present invention are as follows: The external airflow enters the filter channel 103 through the air inlet pipe 109, and then passes through the filter element main body 107 connected to the filter channel 103 for filtration, and flows to the air conditioning unit of the engineering machinery through the air outlet pipe 111. When the airflow rotates in the air outlet pipe 111, it will drive the turbofan 201 to rotate, and convert part of the airflow into rotational power. Through the connection of the transmission mechanism, the rotational power is transmitted to the runner 302, driving the runner 302 to rotate relative to the second gear 301, winding the clockwork 303, and storing kinetic energy. After the air flow meter in the air outlet pipe 111 detects that the air intake flow in the air outlet pipe 111 is lower than the threshold value, the electric push rod 506 is controlled to start, pushing the sliding rod 501 to move, driving the limit mechanism to release the rotation restriction of the round table 105, and at this time, the energy storage mechanism drives the round table 105 to rotate. After 180°, the limiting mechanism limits the rotation of the truncated table 105 again, completing the position replacement of the two filter element bodies 107, so that the new filter element body 107 is connected to the filter channel 103 to perform the air intake filtering operation, and the old filter element body 107 is transferred to the spare channel 104. The staff can open the sealing box 112 to replace the old filter element body 107, or use the auxiliary dust removal mechanism to oscillate and clean the old filter element body 107 in the spare channel 104, and open the electric control valve in the back-blowing pipe 7 to connect the air flow out of the air outlet of the air-conditioning unit to the back-blowing pipe 7, and back-blow and clean the old filter element body 107, so that the old filter element body 107 has a relatively stable filtering ability again, and then use the cyclic replacement of the two filter element bodies 107 to extend the actual service life of a single filter element body 107.

[0041] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air conditioner inner filter replacement device, comprising a housing (1), characterized in that: A first carrier plate (101) and a second carrier plate (102) are fixed in the shell (1), and a filter channel (103) and a spare channel (104) are fixed on the first carrier plate (101) and the second carrier plate (102). A round table (105) is rotatably provided between the first carrier plate (101) and the second carrier plate (102), and two filter element loading cavities (106) are provided on the round table (105), and a filter element main body (107) is loaded in each of the filter element loading cavities (106). The front side of the shell (1) is covered with a first cover plate (108), and an air inlet pipe (109) and a window are provided on the first cover plate (108). The back side of the shell (1) is covered with a filter element (109). The housing (1) is covered with a second cover plate (110), and an air outlet pipe (111) is fixed on the second cover plate (110); a sealing box (112) is plugged into the front end of the standby channel (104); an energy supply mechanism and an energy storage mechanism are arranged in the housing (1); the energy storage mechanism comprises an outer toothed ring (3) fixed around the cylindrical surface of the truncated table (105); a second gear (301) meshing with the outer toothed ring (3) and a rotating wheel (302) are rotatably mounted in the housing (1); a spring (303) is connected between the second gear (301) and the rotating wheel (302); a transmission mechanism is arranged between the rotating wheel (302) and the energy supply mechanism; and a limit mechanism is installed in the housing (1).

2. The device for replacing an inner filter element of an air conditioner according to claim 1, characterized in that: The energy supply mechanism comprises a cylinder (2) rotatably mounted in the end wall of the air outlet pipe (111), and a turbofan (201) is fixedly mounted in the cylinder (2), a tooth groove (202) is arranged around the cylindrical surface of the cylinder (2), and a first gear (203) is meshed on the outer side of the tooth groove (202), and the transmission mechanism is arranged between the first gear (203) and the rotating wheel (302).

3. The device for replacing an inner filter element of an air conditioner according to claim 2, characterized in that: The transmission mechanism comprises a third gear (4) coaxially connected to the first gear (203), and the outer side of the third gear (4) is meshed with a gear ring (401), and the outer side of the gear ring (401) is meshed with a fourth gear (402) coaxially connected to the rotating wheel (302), and a ratchet (403) arranged on the inner side of the gear ring (401) and a first spring (404) for elastically supporting the ratchet (403) are rotatably mounted in the housing (1), and the ratchet (403) is obliquely engaged with the inner side of the gear ring (401).

4. The device for replacing an inner filter element of an air conditioner according to claim 3, characterized in that: A magnetic coupling (405) is provided between the first gear (203) and the third gear (4).

5. The device for replacing an inner filter element of an air conditioner according to claim 1, characterized in that: The limiting mechanism comprises a limiting groove (5) formed on the cylindrical surface of the truncated table (105); a sliding rod (501) is slidably mounted in the housing (1); sleeves (502) are symmetrically fixed at both ends of the sliding rod (501); a limiting rod (503) adapted to the limiting groove (5) is slidably inserted in the sleeve (502); and a second spring (504) elastically supported between the sleeve (502) and the limiting rod (503) is sleeved on the outer side of the limiting rod (503).

6. The device for replacing an inner filter element of an air conditioner according to claim 5, characterized in that: A roller (505) is rotatably mounted on one end of the limiting rod (503) close to the round table (105).

7. The device for replacing an inner filter element of an air conditioner according to claim 5, characterized in that: An air flow meter is fixedly installed in the air outlet pipe (111), and an electric push rod (506) arranged side by side with the slide rod (501) is fixedly installed in the housing (1), and the telescopic end of the electric push rod (506) is fixedly connected to the slide rod (501).

8. The device for replacing an inner filter element of an air conditioner according to claim 1, characterized in that: An auxiliary dust removal mechanism is installed in the shell (1), and the auxiliary dust removal mechanism comprises a circular ring (6) rotatably installed in the shell (1), and an inner gear ring (601) is fixed on the circular ring (6), and a fifth gear (602) coaxially connected to the first gear (203) is meshed on the inner side of the inner gear ring (601), and a plurality of knocking seats (603) correspondingly arranged on the rotation track of the circular ring (6) are fixed in the shell (1), and a knocking column (604) is slidably inserted in the knocking seat (603), and a tension spring (605) elastically connected between the knocking seat (603) and the knocking column (604) is sleeved on the outer side of the knocking column (604), and a first magnet is fixed in the knocking column (604), and a plurality of evenly distributed second magnets are fixed around the circular ring (6), and the magnetic poles of two adjacent second magnets face opposite directions.

9. The device for replacing an inner filter element of an air conditioner according to claim 1, characterized in that: The interior of the sealing box (112) is configured as a hollow structure, a large-sized opening is provided on an end wall of the sealing box (112) close to the filter element loading chamber (106), a plurality of evenly distributed exhaust holes are provided on an end wall of the sealing box (112) away from the filter element loading chamber (106), and a backflush pipe (7) connected to the spare channel (104) is fixed on the second cover plate (110).

10. The device for replacing an inner filter element of an air conditioner according to claim 9, characterized in that: The connection between the air outlet pipe (111) and the filtering channel (103), and the connection between the backflush pipe (7) and the standby channel (104) are both configured as spiral structures.

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