Fresh air handling unit filtering pipeline with cross back-blowing cleaning function

Abstract

The utility model discloses a fresh air handling unit filtering pipeline with cross back-blowing cleaning, which comprises an air inlet pipe, one end of the air inlet pipe is provided with a first flow-dividing pipe and a second flow-dividing pipe in a clamping way, an eduction pipe is fixedly arranged between the first flow-dividing pipe and the second flow-dividing pipe, the first flow-dividing pipe is fixedly connected with the second flow-dividing pipe, and the second flow-dividing pipe is fixedly connected with the eduction pipe. And back flushing mechanisms are arranged on the surfaces of the air inlet pipe, the first flow dividing pipe and the second flow dividing pipe, and back flushing cleaning is conducted in the mode that the first flow dividing pipe and the second flow dividing pipe alternately exhaust air. According to the fresh air handling unit filtering pipeline with the cross back-blowing cleaning function, the mode that sucked outside air is alternately filtered through filtering plates in a first flow dividing pipe and a second flow dividing pipe on the two sides of an air inlet pipe is adopted, so that the two filtering plates can be subjected to back-blowing cleaning of the air when filtering is not conducted; therefore, the filter plate cannot be blocked to reduce the air supply efficiency of the fresh air handling unit, disassembly and assembly of a main machine are avoided, and the service life of the main machine of the fresh air handling unit is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air units, in particular to a fresh air unit filter pipeline with cross reverse blowing cleaning. Background Technique

[0002] A fresh air unit is an air conditioning device that provides fresh air. It is a system for ventilating and replacing the air in a room to improve the indoor air quality. It can reasonably and effectively discharge the polluted air in the room and introduce fresh air from the outside. A fresh air unit is a device that provides fresh air. Its main principle is to extract fresh air from the outside, and after processes such as dust removal, dehumidification (or humidification), cooling (or heating), it is sent into the room through a fan. A fresh air unit is composed of a filter, a heat exchange coil, a heater, a humidifier, and a fan. Its structure is simple, and the form of the automatic control system is single. With the continuous development and application of fresh air technology, the fresh air system has been widely accepted in various industries. During the use of a fresh air unit, it is necessary to pay attention to cleaning and maintenance. Regular cleaning and maintenance are very beneficial to both the equipment and the user. When the fresh air system is operating, due to static electricity, a large amount of dust in the air will be adsorbed at the air outlet. Dust is prone to breeding bacteria, affecting beauty and health. The central fresh air system needs to be regularly cleaned by professionals at the air outlet. When cleaning, a special cleaning agent is required to clean the air outlet and the filter screen to clean the dust on the air outlet and the filter screen to prevent blockage and affect the air supply and exhaust efficiency. Due to dust accumulation in the air duct and the decline of the pipeline sealing performance, the air volume of each air outlet will be uneven and the fresh air effect will be poor. Professionals need to regularly check the system and adjust the air volume to eliminate hidden dangers and ensure the fresh air effect. Among them, cleaning the primary filter is the most important dust filtering component. After removing the primary filter from the main engine box during cleaning, the removed primary filter can be gently flicked with fingers to remove the floating dust on the surface, or an air gun can be used to clean the stains and dust. In places with relatively serious air pollution, to ensure a good filtering effect, the primary filter needs to be replaced or cleaned every two or three months. However, when cleaning, the main engine box needs to be opened, and frequent opening of the main engine box will reduce the sealing performance of the main engine box, which is not conducive to extending the service life of the fresh air unit main engine. Content of the Utility Model

[0003] The purpose of the utility model is to provide a fresh air unit filter pipeline with cross reverse blowing cleaning, so as to solve the problem that the frequent replacement of the primary filter of the fresh air unit affects the service life of the main engine box mentioned in the above background technique.

[0004] To achieve the above object, the present utility model provides the following technical solution: A fresh air unit filter pipeline with cross-backwashing cleaning, including an intake pipe. One end of the intake pipe is snap-fitted with a first shunt pipe and a second shunt pipe, and a lead-out pipe is fixedly arranged between the first shunt pipe and the second shunt pipe. The first shunt pipe and the second shunt pipe are fixedly connected, and the first shunt pipe and the second shunt pipe are fixedly connected to the intake pipe through bolts. An anti-blowing mechanism is arranged on the surfaces of the intake pipe, the first shunt pipe and the second shunt pipe, and backwashing cleaning is carried out by alternately exhausting air through the first shunt pipe and the second shunt pipe.

[0005] Preferably, the anti-blowing mechanism includes: a switching motor, which is fixedly installed at one end of the intake pipe connected to the first shunt pipe and the second shunt pipe. The upper end of the output shaft of the switching motor penetrates the inner surface of the intake pipe, and a switching ball is fixedly arranged at one end of the output shaft of the switching motor located inside the intake pipe. A shunt groove is formed on the side surface of the switching ball. Filter plates are fixedly arranged inside both the first shunt pipe and the second shunt pipe. A communicating pipe is connected between one end of the first shunt pipe and the second shunt pipe and the lead-out pipe, and a pressure valve is fixedly installed at one end of the lead-out pipe.

[0006] Adopting the above technical solution enables the pressure valve to discharge air when the pressure reaches the standard.

[0007] Preferably, the anti-blowing mechanism further includes: a collection tank, which is evenly opened on the inner bottom surface of the first shunt pipe and the second shunt pipe. Pressure cylinders are fixedly arranged on the side surfaces of the first shunt pipe and the second shunt pipe, and a sliding piston plate is arranged inside the pressure cylinders. Openings are arranged at both ends of the pressure cylinders. An electric push rod is fixedly installed on the outer surface of the pressure cylinder, and one end of the electric push rod is fixedly connected to a sliding rod, and a limiting block is slidably installed at one end of the sliding rod.

[0008] Adopting the above technical solution enables the limiting block to limit the piston plate.

[0009] Preferably, the outer surface of the switching ball fits with the inner surface of the intake pipe. The shunt groove penetrates the outer surface of the switching ball, and the shunt groove is designed in a T shape.

[0010] Adopting the above technical solution enables the switching ball to guide air through rotation in cooperation with the shunt groove.

[0011] Preferably, one end of the communicating pipe penetrating the first shunt pipe and the second shunt pipe is located on the side of the filter plate facing away from the intake pipe, and the other end of the communicating pipe penetrates the inner surface of the lead-out pipe.

[0012] Adopting the above technical solution enables the communicating pipe to backwash and clean the filter plate.

[0013] Preferably, the piston plate is in sliding friction connection with the pressure cylinder, and a spring is connected between the piston plate and the pressure cylinder.

[0014] With the above technical solution, the piston plate can slide under pressure and compress the spring between it and the pressure cylinder.

[0015] Preferably, a spring is connected between the sliding rod and the limiting block, and one end of the limiting block penetrates the inner surface of the pressure cylinder, and the limiting block is in sliding friction connection with the pressure cylinder. The end of the limiting block inside the pressure cylinder is designed as a right trapezoid, and the inclined surface of the right trapezoid end of the limiting block faces away from the piston plate, and the right-angled surface of the right trapezoid end of the limiting block fits with the outer surface of the piston plate.

[0016] With the above technical solution, the limiting block can slide to let the piston plate pass when under pressure, and the limiting block can maintain the seal at one end of the pressure cylinder through the sliding friction connection with the pressure cylinder.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The filter pipeline of the cross-counter blowing and cleaning fresh air unit:

[0018] 1. By adopting the method of alternately filtering the inhaled external air through the internal filter plates of the first shunt pipe and the second shunt pipe on both sides of the intake pipe, the two filter plates can be back-blown and cleaned by air when not filtering, so that the filter plates will not be blocked, resulting in a reduction in the air supply efficiency of the fresh air unit, avoiding the disassembly and assembly of the main unit, and prolonging the service life of the main unit of the fresh air unit;

[0019] 2. Further, by adopting the design of the concave collecting groove, the dust blown off the filter plate can enter the collecting groove for collection, thereby reducing the possibility of the dust being raised again during the subsequent air purification, and prolonging the effective filtering time of the filter plate;

[0020] 3. Furthermore, by adopting the method of the piston plate in the pressure cylinder sliding when gas is injected, the air can flow fully during the back-blowing of the filter plate to realize the back-blowing and cleaning of the dust on the filter plate, ensuring the cleaning effect of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0022] Figure 2 is a schematic three-dimensional structure diagram of the connection between the intake pipe and the switching motor of the present utility model;

[0023] Figure 3 is a schematic three-dimensional structure diagram of the whole sectional plane of the present utility model;

[0024] Figure 4This is a schematic diagram of the three-dimensional structure of the cross-section connecting the second diverter pipe and the filter plate of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the cross-section connecting the second diverter pipe and the collecting tank of the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the connection section of the electric push rod, sliding rod and limit block of the utility model.

[0027] In the figure: 1. Inlet pipe; 2. First diverter pipe; 3. Second diverter pipe; 4. Outlet pipe; 5. Switching motor; 6. Switching ball; 7. Diverter trough; 8. Filter plate; 9. Connecting pipe; 10. Pressure valve; 11. Collecting tank; 12. Pressure cylinder; 13. Piston plate; 14. Electric push rod; 15. Sliding rod; 16. Limit block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-6 The utility model provides a technical solution: a cross-backblowing cleaning fresh air unit filter pipeline. Example 1:

[0030] This embodiment discloses: an intake pipe 1, one end of which is clamped and installed with a first diverter pipe 2 and a second diverter pipe 3, and a guide pipe 4 is fixedly provided between the first diverter pipe 2 and the second diverter pipe 3, the first diverter pipe 2 and the second diverter pipe 3 are fixedly connected, and the first diverter pipe 2 and the second diverter pipe 3 are fixedly connected to the intake pipe 1 by bolts, and a backflush mechanism is provided on the surface of the intake pipe 1, the first diverter pipe 2 and the second diverter pipe 3, and backflush cleaning is performed by alternately exhausting the first diverter pipe 2 and the second diverter pipe 3;

[0031] The backflush mechanism includes: a switching motor 5, which is fixedly mounted at one end of the intake pipe 1 connected to the first diverter pipe 2 and the second diverter pipe 3, and the upper end of the output shaft of the switching motor 5 passes through the inner surface of the intake pipe 1, and a switching ball 6 is fixedly provided at the end of the output shaft of the switching motor 5 located inside the intake pipe 1, and a diverter groove 7 is provided on the side surface of the switching ball 6, a filter plate 8 is fixedly provided inside each of the first diverter pipe 2 and the second diverter pipe 3, and a connecting pipe 9 is connected between one end of the first diverter pipe 2 and the second diverter pipe 3 and the outlet pipe 4, and a pressure valve 10 is fixedly installed at one end of the outlet pipe 4;

[0032] The outer surface of the switching ball 6 is fitted to the inner surface of the intake pipe 1. The diversion groove 7 runs through the outer surface of the switching ball 6, and the diversion groove 7 is designed in a T shape.

[0033] One end of the connecting pipe 9 runs through the first diversion pipe 2 and the second diversion pipe 3 and is located on the side of the filter plate 8 facing away from the intake pipe 1, and the other end of the connecting pipe 9 runs through the inner surface of the outlet pipe 4.

[0034] During operation, at this time, the fresh air unit injects external air through the intake pipe 1 into the first diversion pipe 2 through the diversion groove 7 on the surface of the switching ball 6. The air is filtered by the filter plate 8 inside the first diversion pipe 2 and then injected into the outlet pipe 4 through the connecting pipe 9. At this time, the air is injected into the second diversion pipe 3 through another connecting pipe 9 to blow and filter the filter plate 8 inside the second diversion pipe 3. As the pressure inside the outlet pipe 4 increases, the pressure valve 10 opens to continuously discharge the air.

[0035] After a period of time, the switching motor 5 drives the switching ball 6 and the diversion groove 7 to rotate to achieve the purpose of guiding the air in the intake pipe 1 to the second diversion pipe 3. The air is filtered by the filter plate 8 inside the second diversion pipe 3 and then injected into the outlet pipe 4 through the connecting pipe 9. At this time, the air is injected into the first diversion pipe 2 through another connecting pipe 9 to blow and filter the filter plate 8 inside the first diversion pipe 2. As the pressure inside the outlet pipe 4 increases, the pressure valve 10 opens to continuously discharge the air, so as to achieve the blowback cleaning of the two filter plates 8 and eliminate the need to open the main unit for cleaning and maintenance. Embodiment 2:

[0036] This embodiment discloses on the basis of Embodiment 1 that the blowback mechanism further includes: a collection tank 11, the collection tank 11 is evenly opened on the inner bottom surface of the first diversion pipe 2 and the second diversion pipe 3, and a pressure cylinder 12 is fixedly arranged on the side surface of the first diversion pipe 2 and the second diversion pipe 3. And a sliding piston plate 13 is arranged inside the pressure cylinder 12. Openings are arranged at both ends of the pressure cylinder 12. An electric push rod 14 is fixedly installed on the outer surface of the pressure cylinder 12, and one end of the electric push rod 14 is fixedly connected to a sliding rod 15, and a limiting block 16 is slidably installed at one end of the sliding rod 15.

[0037] The piston plate 13 is in sliding friction connection with the pressure cylinder 12, and a spring is connected between the piston plate 13 and the pressure cylinder 12.

[0038] A spring is connected between the sliding rod 15 and the limiting block 16, and one end of the limiting block 16 penetrates the inner surface of the pressure cylinder 12, and the limiting block 16 is in sliding friction connection with the pressure cylinder 12. One end of the limiting block 16 located inside the pressure cylinder 12 is designed as a right trapezoid, and the inclined surface of the right trapezoid end of the limiting block 16 faces away from the piston plate 13, and the right-angled surface of the right trapezoid end of the limiting block 16 fits against the outer surface of the piston plate 13;

[0039] During the process of the air being reversely injected into the first shunt pipe 2 and the second shunt pipe 3 through the connecting pipe 9 to blow and clean the filter plate 8, at this time, the electric push rod 14 on the air blowing side starts to drive the electric push rod 14 and the sliding rod 15 to slide to release the limit on the piston plate 13 according to the rotation feedback signal of the switching motor 5 driving the switching ball 6. The piston plate 13 slides under the action of the air pressure to compress the spring between it and the pressure cylinder 12, so that the air can continuously blow the dust on the surface of the filter plate 8 to ensure the cleaning effect until the piston plate 13 can no longer slide and the pressure inside the outlet pipe 4 increases to open the pressure valve 10 to continuously exhaust air outwards. When the switching ball 6 drives the shunt groove 7 to rotate to switch the diversion direction, at this time, as the pressure inside the pressure cylinder 12 decreases, the piston plate 13 slides back under the support of the spring. And at this time, due to the change in the rotation state of the switching motor 5 driving the switching ball 6, the limiting block 16 resumes the state of inserting into the pressure cylinder 12 to limit the piston plate 13. When the piston plate 13 slides back at this time, it presses the inclined surface of the limiting block 16, causing the limiting block 16 to slide out of the way of the piston plate 13 and, after the piston plate 13 slides in place, interactively reset under the support of the spring between it and the sliding rod 15 to continue to limit the piston plate 13;

[0040] The blown air enters the collection tank 11 and is collected, reducing the possibility of dust being raised when the subsequent air is blown in.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cross-backwash cleaning fresh air unit filter pipeline, comprising an air inlet pipe (1), one end of which is fastened with a first diverter pipe (2) and a second diverter pipe (3), and a dewatering pipe (4) is fixedly arranged between the first diverter pipe (2) and the second diverter pipe (3), characterized in that: The first diverter pipe (2) and the second diverter pipe (3) are fixedly connected, and the first diverter pipe (2) and the second diverter pipe (3) are fixedly connected to the air intake pipe (1) via bolts; a backflush mechanism is provided on the surfaces of the air intake pipe (1), the first diverter pipe (2) and the second diverter pipe (3), and backflush cleaning is performed by alternately exhausting the first diverter pipe (2) and the second diverter pipe (3).

2. The filter pipeline of the fresh air unit with cross-backwashing cleaning according to claim 1, wherein: The back-blowing mechanism comprises: a switching motor (5), the switching motor (5) being fixedly mounted at one end of the intake pipe (1) connected to the first diverter pipe (2) and the second diverter pipe (3), and the upper end of the output shaft of the switching motor (5) passing through the inner surface of the intake pipe (1), and a switching ball (6) being fixedly arranged at one end of the output shaft of the switching motor (5) located inside the intake pipe (1), a diverter groove (7) being provided on the side surface of the switching ball (6), a filter plate (8) being fixedly arranged inside the first diverter pipe (2) and the second diverter pipe (3), and a connecting pipe (9) being connected between one end of the first diverter pipe (2) and the second diverter pipe (3) and the outlet pipe (4), and a pressure valve (10) being fixedly mounted at one end of the outlet pipe (4).

3. The filter pipeline of the fresh air unit with cross-counter blowing cleaning according to claim 1, characterized in that: The back-blowing mechanism further comprises: a collecting tank (11), wherein the collecting tank (11) is evenly arranged on the inner bottom surface of the first diversion pipe (2) and the second diversion pipe (3), and a pressure cylinder (12) is fixedly provided on the side surface of the first diversion pipe (2) and the second diversion pipe (3), and a sliding piston plate (13) is provided inside the pressure cylinder (12), both ends of the pressure cylinder (12) are provided with openings, an electric push rod (14) is fixedly installed on the outer surface of the pressure cylinder (12), and one end of the electric push rod (14) is fixedly connected to a sliding rod (15), and a limiting block (16) is slidably installed on one end of the sliding rod (15).

4. The cross-backflushing cleaning fresh air unit filter pipeline according to claim 2 is characterized by: The outer surface of the switching ball (6) fits the inner surface of the air intake pipe (1), the diverter groove (7) passes through the outer surface of the switching ball (6), and the diverter groove (7) is T-shaped.

5. The cross-backflushing cleaning fresh air unit filter pipeline according to claim 2 is characterized by: One end of the connecting pipe (9) passes through the first branch pipe (2) and the second branch pipe (3) and is located on the side of the filter plate (8) facing away from the air inlet pipe (1), and the other end of the connecting pipe (9) passes through the inner surface of the outlet pipe (4).

6. The filter pipeline of the fresh air unit with cross reverse blowing cleaning according to claim 3, characterized in that: The piston plate (13) and the pressure cylinder (12) are connected by sliding friction, and a spring is connected between the piston plate (13) and the pressure cylinder (12).

7. A filtering pipeline of a fresh air unit with cross reverse blowing cleaning according to claim 3, characterized in that: A spring is connected between the sliding rod (15) and the limit block (16), and one end of the limit block (16) passes through the inner surface of the pressure cylinder (12), and the limit block (16) and the pressure cylinder (12) are connected by sliding friction. The end of the limit block (16) located inside the pressure cylinder (12) is designed as a right-angled trapezoid, and the inclined surface of one end of the right-angled trapezoid of the limit block (16) is set back to the piston plate (13), and the right-angled surface of one end of the right-angled trapezoid of the limit block (16) is in contact with the outer surface of the piston plate (13).

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