Air intake impurity filtering device backflush valve

Abstract

The utility model belongs to the technical field of backflush valve, especially an air inlet impurity filter device backflush valve, including valve body main part assembly, the input end of valve body main part assembly is connected with backflush gas source subassembly, the inside of valve body main part assembly is provided with valve core drive subassembly, the outside of valve body main part assembly is provided with pressure regulating subassembly, the connecting end of valve body main part assembly and air inlet filter device is provided with sealed protection subassembly, the drive cylinder of valve core drive subassembly drives piston rod and sealed valve core along valve core guide bushing accurate movement, and the backflush channel is opened / closed fast, the gas filter of backflush gas source subassembly filters the impurity in compressed air, avoids secondary pollution filter screen, and one-way valve prevents air backflow, and backflush airflow is evenly injected to filter screen surface through backflush outlet, can remove the accumulated impurity in filter screen pore, solves the problem that traditional backflush valve is not complete in dust removal, and guarantees that filter device air inlet is smooth.

Description

Technical Field

[0001] This utility model relates to the field of backflush valve technology, and in particular to a backflush valve for an air intake impurity filtration device. Background Technology

[0002] Air intake impurity filtration devices are widely used in power plants, chemical plants, metallurgical plants, and other fields to filter dust, particles, and other impurities from the intake air, ensuring the stable operation of downstream equipment (such as gas turbines and compressors). The backflush valve is the core cleaning component of the air intake impurity filtration device. By periodically injecting compressed air, it removes impurities accumulated on the filter screen, preventing filter clogging and increased intake resistance.

[0003] Existing backflush valves suffer from several drawbacks: low backflush efficiency, uneven airflow in traditional solenoid-type backflush valves making it difficult to thoroughly remove deep impurities from the filter screen, and incomplete cleaning due to airflow pressure fluctuations; poor pressure control accuracy, lacking real-time pressure monitoring and adjustment functions, excessive backflush pressure can damage filter fibers, while insufficient pressure will not effectively clean the screen; weak sealing performance, with easy air leakage at the connection point with the filter device, leading to backflush airflow loss, and external impurities can easily penetrate into the valve body, affecting valve core operation; these problems restrict the cleaning effect and service life of the intake impurity filter device, therefore we propose a backflush valve for the intake impurity filter device. Utility Model Content

[0004] The purpose of this invention is to provide a backflush valve for an air intake impurity filtration device, which solves the existing problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A backflush valve for an intake air impurity filter includes a valve body assembly. The input end of the valve body assembly is connected to a backflush air source assembly. A valve core drive assembly is disposed on the inner side of the valve body assembly. A pressure regulating assembly is disposed on the outer side of the valve body assembly. A sealing and protection assembly is disposed at the connection end between the valve body assembly and the intake air filter. A control and monitoring assembly is disposed at the bottom of the valve body assembly. The valve core drive assembly and the pressure regulating assembly are both electrically connected to the control and monitoring assembly.

[0007] Preferably, the valve body main assembly includes a valve housing, an air inlet, and a backflush outlet. The air inlet is located on one side of the valve housing, and the backflush outlet is located on the other side of the valve housing. A valve core guide sleeve is fixedly installed on the inner side of the valve housing, and an installation cavity is provided on the top of the valve housing to accommodate the valve core drive assembly.

[0008] Preferably, the backflush air source assembly includes an air source pipe, a one-way valve, and a gas filter. One end of the air source pipe is connected to the air inlet, and the other end is connected to an external compressed air source. The one-way valve and the gas filter are both installed on the air source pipe. The gas filter is located between the one-way valve and the air inlet, and a metal filter screen is provided on the inner side of the gas filter.

[0009] Preferably, the valve core drive assembly includes a drive cylinder, a piston rod, and a sealing valve core. The drive cylinder is fixedly installed on the top inner side of the mounting cavity, the piston rod is fixedly installed on the output end of the drive cylinder, and the sealing valve core is fixedly installed on the bottom of the piston rod. The sealing valve core slides and fits against the valve core guide sleeve, and a valve core sealing ring is sleeved on the outer side of the sealing valve core.

[0010] Preferably, the pressure regulating assembly includes a pressure regulating valve, a pressure gauge, and a pressure sensor. The pressure regulating valve is fixedly installed on the outside of the valve housing and communicates with the inside of the valve housing. The pressure gauge is fixedly installed on the outside of the pressure regulating valve. The pressure sensor is fixedly installed on the inside of the valve housing and is located on one side of the backflush outlet. An adjustment knob is provided on the outside of the pressure regulating valve.

[0011] Preferably, the sealing and protection assembly includes a flange connecting plate, a sealing gasket, and a dust ring. The flange connecting plate is fixedly installed at one end of the valve body near the backflush outlet. The sealing gasket is fixedly installed on the mating surface of the flange connecting plate. The dust ring is fixedly installed on the inner edge of the backflush outlet. The flange connecting plate has connecting bolt holes.

[0012] Preferably, the control and monitoring component includes a controller, an operation button, and a status display screen. The controller is fixedly installed on the outside of the valve body, and the operation button and status display screen are both fixedly installed on the outside of the controller. The controller is electrically connected to the drive cylinder and the pressure sensor, respectively. A timing module is provided on the inside of the controller for setting the backflush interval time.

[0013] Preferably, a cylinder cover is provided on the outside of the drive cylinder, the cylinder cover is fixedly installed on the top of the mounting cavity, heat dissipation holes are provided on the outside of the cylinder cover, and a dustproof telescopic sleeve is fitted on the outside of the piston rod, with the two ends of the dustproof telescopic sleeve being fixedly connected to the drive cylinder and the sealing valve core, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) The present invention provides a backflush valve for an air intake impurity filter device. The driving cylinder of the valve core drive assembly drives the piston rod and the sealing valve core to move precisely along the valve core guide sleeve, and quickly opens / closes the backflush channel. The gas filter of the backflush air source assembly filters impurities in the compressed air, avoids secondary pollution of the filter screen, and the one-way valve prevents airflow backflow. The backflush airflow is evenly sprayed onto the surface of the filter screen through the backflush outlet, which can penetrate deep into the filter screen pores to remove accumulated impurities, solve the problem of incomplete dust removal of traditional backflush valves, and ensure smooth air intake of the filter device.

[0016] (2) The backflush valve of the air intake impurity filter device of this utility model has a pressure sensor of the pressure regulating component that monitors the backflush air pressure in real time and feeds the data back to the controller of the control monitoring component; if the pressure is too high, the controller can link the pressure regulating valve to reduce the pressure by adjusting the knob; if the pressure is too low, it prompts to replenish the air source; the pressure gauge displays the current pressure intuitively, avoiding damage to the filter screen due to excessive backflush pressure or affecting the dust removal effect due to excessively low backflush pressure, and extending the service life of the filter screen. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of a backflush valve for an air intake impurity filtration device proposed in this utility model.

[0019] Figure 2 This is a partial three-dimensional structural diagram of the backflush valve of an air intake impurity filtration device proposed in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the backflush valve of an air intake impurity filtration device proposed in this utility model, viewed from below.

[0021] Figure 4 This is a three-dimensional cross-sectional view of the backflush valve of the air intake impurity filtration device proposed in this utility model.

[0022] In the diagram: 1. Valve body main assembly; 11. Valve shell; 12. Air inlet; 13. Backflush outlet; 14. Valve core guide sleeve; 15. Mounting cavity; 2. Backflush air source assembly; 21. Air source pipe; 22. Check valve; 23. Gas filter; 24. Metal filter screen; 3. Valve core drive assembly; 31. Drive cylinder; 32. Piston rod; 33. Sealing valve core; 34. Valve core sealing ring; 35. Cylinder cover; 36. Heat dissipation hole; 37. Dustproof telescopic sleeve; 4. Pressure regulating assembly; 41. Pressure regulating valve; 42. Pressure gauge; 43. Pressure sensor; 44. Adjustment knob; 5. Sealing protection assembly; 51. Flange connection plate; 52. Sealing gasket; 53. Dustproof ring; 54. Connecting bolt hole; 6. Control and monitoring assembly; 61. Controller; 62. Operation button; 63. Status display screen; 64. Timer module. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] refer to Figure 1-4 A backflush valve for an intake air impurity filter includes a valve body assembly 1, an intake air source assembly 2 connected to the input end of the valve body assembly 1, a valve core drive assembly 3 disposed on the inner side of the valve body assembly 1, a pressure regulating assembly 4 disposed on the outer side of the valve body assembly 1, a sealing and protection assembly 5 disposed at the connection end between the valve body assembly 1 and the intake air filter, and a control and monitoring assembly 6 disposed at the bottom of the valve body assembly 1. The valve core drive assembly 3 and the pressure regulating assembly 4 are both electrically connected to the control and monitoring assembly 6.

[0025] In this embodiment, the valve body main component 1 includes a valve housing 11, an air inlet 12, and a backflush outlet 13. The air inlet 12 is located on one side of the valve housing 11, and the backflush outlet 13 is located on the other side of the valve housing 11. A valve core guide sleeve 14 is fixedly installed on the inner side of the valve housing 11, and a mounting cavity 15 is provided on the top of the valve housing 11. The mounting cavity 15 is used to accommodate the valve core drive component 3.

[0026] In this embodiment, the backflush air source assembly 2 includes an air source pipe 21, a one-way valve 22, and a gas filter 23. One end of the air source pipe 21 is connected to the air inlet 12, and the other end is connected to an external compressed air source. The one-way valve 22 and the gas filter 23 are both installed on the air source pipe 21. The gas filter 23 is located between the one-way valve 22 and the air inlet 12, and a metal filter screen 24 is provided on the inner side of the gas filter 23.

[0027] In this embodiment, the valve core drive assembly 3 includes a drive cylinder 31, a piston rod 32, and a sealing valve core 33. The drive cylinder 31 is fixedly installed on the top inner side of the mounting cavity 15, the piston rod 32 is fixedly installed on the output end of the drive cylinder 31, and the sealing valve core 33 is fixedly installed on the bottom of the piston rod 32. The sealing valve core 33 slides and fits against the valve core guide sleeve 14, and a valve core sealing ring 34 is sleeved on the outer side of the sealing valve core 33. The drive cylinder 31 of the valve core drive assembly 3 drives the piston rod 32 and the sealing valve core 33 to move precisely along the valve core guide sleeve 14, quickly opening / closing the backflush channel. The gas filter 23 of the backflush air source assembly 2 filters impurities in the compressed air to avoid secondary contamination of the filter screen, and the one-way valve 22 prevents airflow backflow. The backflush airflow is evenly sprayed onto the surface of the filter screen through the backflush outlet 13, which can penetrate deep into the filter screen pores to remove accumulated impurities, solving the problem of incomplete dust removal by traditional backflush valves and ensuring smooth air intake of the filtration device.

[0028] In this embodiment, the pressure regulating component 4 includes a pressure regulating valve 41, a pressure gauge 42, and a pressure sensor 43. The pressure regulating valve 41 is fixedly installed on the outside of the valve housing 11 and communicates with the inside of the valve housing 11. The pressure gauge 42 is fixedly installed on the outside of the pressure regulating valve 41. The pressure sensor 43 is fixedly installed on the inside of the valve housing 11 and is located on one side of the backflush outlet 13. An adjustment knob 44 is provided on the outside of the pressure regulating valve 41. The pressure sensor 43 of the pressure regulating component 4 monitors the backflush airflow pressure in real time and feeds the data back to the controller 61 of the control and monitoring component 6. If the pressure is too high, the controller 61 can link the pressure regulating valve 41 to reduce the pressure by adjusting the knob 44. If the pressure is too low, it will prompt to replenish the air source. The pressure gauge 42 displays the current pressure intuitively, avoiding damage to the filter screen due to excessive backflush pressure or affecting the dust removal effect due to excessively low backflush pressure, thus extending the service life of the filter screen.

[0029] In this embodiment, the sealing and protection assembly 5 includes a flange connecting plate 51, a sealing gasket 52, and a dustproof ring 53. The flange connecting plate 51 is fixedly installed at one end of the valve body 11 near the backflush outlet 13. The sealing gasket 52 is fixedly installed on the mating surface of the flange connecting plate 51. The dustproof ring 53 is fixedly installed on the inner edge of the backflush outlet 13. The flange connecting plate 51 and the sealing gasket 52 of the sealing and protection assembly 5 ensure that the backflush valve and the air intake filter are tightly connected and there is no airflow leakage. The dustproof ring 53 prevents external impurities from seeping into the valve body from the backflush outlet 13. The valve core sealing ring 34 enhances the sealing performance between the sealing valve core 33 and the valve core guide sleeve 14, reduces the loss of backflush airflow in the valve body, improves backflush efficiency, and at the same time avoids impurities from contaminating the valve core drive assembly 3.

[0030] In this embodiment, the control and monitoring component 6 includes a controller 61, an operation button 62, and a status display screen 63. The controller 61 is fixedly installed on the outside of the valve housing 11, and the operation button 62 and the status display screen 63 are also fixedly installed on the outside of the controller 61. The controller 61 is electrically connected to the drive cylinder 31 and the pressure sensor 43, respectively. A timing module 64 is provided on the inside of the controller 61 for setting the backflushing interval time. The timing module 64 of the control and monitoring component 6 can preset the backflushing interval time to realize automatic periodic backflushing without manual intervention. The operation button 62 can manually start and stop backflushing, and the status display screen 63 intuitively displays the backflushing pressure, operating status, and fault prompts such as abnormal pressure and valve core jamming. The controller 61 monitors the working status of each component in real time and alarms in time when a fault occurs to avoid filter clogging due to equipment failure and ensure the continuous and stable operation of the air intake filtration device.

[0031] In this embodiment, a cylinder cover 35 is provided on the outside of the drive cylinder 31. The cylinder cover 35 is fixedly installed on the top of the mounting cavity 15. A heat dissipation hole 36 is provided on the outside of the cylinder cover 35. A dustproof telescopic sleeve 37 is fitted on the outside of the piston rod 32. The two ends of the dustproof telescopic sleeve 37 are fixedly connected to the drive cylinder 31 and the sealing valve core 33, respectively.

[0032] The implementation principle of the backflush valve of the air intake impurity filter device in this embodiment is as follows: the driving cylinder 31 of the valve core drive assembly 3 drives the piston rod 32 and the sealing valve core 33 to move precisely along the valve core guide sleeve 14, quickly opening / closing the backflush channel; the gas filter 23 of the backflush air source assembly 2 filters impurities in the compressed air, avoiding secondary contamination of the filter screen, and the one-way valve 22 prevents airflow backflow; the backflush airflow is evenly sprayed onto the filter screen surface through the backflush outlet 13, which can penetrate deep into the filter screen pores to remove accumulated impurities, solve the problem of incomplete dust removal by traditional backflush valves, and ensure smooth air intake of the filter device;

[0033] The pressure sensor 43 of the pressure regulating component 4 monitors the backflush air pressure in real time and feeds the data back to the controller 61 of the control monitoring component 6. If the pressure is too high, the controller 61 can link the pressure regulating valve 41 to reduce the pressure by adjusting the knob 44. If the pressure is too low, it will prompt to replenish the air source. The pressure gauge 42 displays the current pressure intuitively, avoiding damage to the filter screen due to excessive backflush pressure or affecting the dust removal effect due to excessively low backflush pressure, thus extending the service life of the filter screen.

[0034] The flange connection plate 51 of the sealing and protection assembly 5, together with the sealing gasket 52, ensures that the backflush valve and the air intake filter are tightly connected and there is no airflow leakage; the dustproof ring 53 prevents external impurities from seeping into the valve body from the backflush outlet 13; the valve core sealing ring 34 enhances the sealing performance between the sealing valve core 33 and the valve core guide sleeve 14, reduces the loss of backflush airflow in the valve body, improves backflush efficiency, and at the same time avoids impurities from contaminating the valve core drive assembly 3.

[0035] The air supply pipe 21 of the backflush air source assembly 2 can be adapted to compressed air source pipelines of different specifications. The pressure regulating valve 41 of the pressure regulating assembly 4 can adjust the backflush pressure according to the air intake and filter screen aperture of the filter device, without the need to replace the entire valve. The connecting bolt holes 54 of the flange connecting plate 51 are adapted to filter devices of various installation sizes, with strong versatility, reducing the frequency of valve replacement due to poor compatibility and reducing maintenance costs.

[0036] The timing module 64 of the control and monitoring component 6 can preset the backflush interval time to achieve automatic periodic backflush without manual intervention; the operation button 62 can manually start and stop backflush, and the status display screen 63 intuitively displays the backflush pressure, operating status and fault prompts such as abnormal pressure and valve core jamming; the controller 61 monitors the working status of each component in real time and alarms in time when there is a fault, so as to avoid filter screen blockage due to equipment failure and ensure the continuous and stable operation of the air intake filter device.

[0037] The valve body 11 of the main valve body component 1 is made of high-strength cast iron to resist vibration and impact in the industrial environment; the cylinder cover 35 and heat dissipation hole 36 protect the drive cylinder 31 and prevent high temperature or impurities from affecting its performance; the dustproof telescopic sleeve 37 prevents dust from entering the connection between the piston rod 32 and the drive cylinder 31, reduces the risk of jamming of the valve core drive component 3, and is suitable for long-term use in complex working conditions such as power plants and chemical plants.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The backflush valve of the air intake impurity filtering device provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The description of the embodiments above is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A backflush valve for an air intake impurity filtration device, characterized in that, include: The valve body main assembly (1) has a backflush air source assembly (2) connected to its input end. A valve core drive assembly (3) is provided on the inner side of the valve body main assembly (1). A pressure regulating assembly (4) is provided on the outer side of the valve body main assembly (1). A sealing protection assembly (5) is provided at the connection end between the valve body main assembly (1) and the air intake filter. A control monitoring assembly (6) is provided at the bottom of the valve body main assembly (1). The valve core drive assembly (3) and the pressure regulating assembly (4) are both electrically connected to the control monitoring assembly (6).

2. The backflush valve of the air intake impurity filter according to claim 1, characterized in that, The valve body main assembly (1) includes a valve housing (11), an air inlet (12) and a backflush outlet (13). The air inlet (12) is located on one side of the valve housing (11), and the backflush outlet (13) is located on the other side of the valve housing (11). A valve core guide sleeve (14) is fixedly installed on the inner side of the valve housing (11). An installation cavity (15) is provided on the top of the valve housing (11), and the installation cavity (15) is used to accommodate the valve core drive assembly (3).

3. The backflush valve of the air intake impurity filter according to claim 1, characterized in that, The backflush air source assembly (2) includes an air source pipe (21), a one-way valve (22) and a gas filter (23). One end of the air source pipe (21) is connected to the air inlet (12), and the other end is connected to an external compressed air source. The one-way valve (22) and the gas filter (23) are both installed on the air source pipe (21). The gas filter (23) is located between the one-way valve (22) and the air inlet (12). A metal filter screen (24) is installed on the inner side of the gas filter (23).

4. The backflush valve of the air intake impurity filter according to claim 1, characterized in that, The valve core drive assembly (3) includes a drive cylinder (31), a piston rod (32), and a sealing valve core (33). The drive cylinder (31) is fixedly installed on the top inner side of the mounting cavity (15). The piston rod (32) is fixedly installed on the output end of the drive cylinder (31). The sealing valve core (33) is fixedly installed on the bottom of the piston rod (32). The sealing valve core (33) slides and fits against the valve core guide sleeve (14). A valve core sealing ring (34) is sleeved on the outer side of the sealing valve core (33).

5. The backflush valve of the air intake impurity filter according to claim 1, characterized in that, The pressure regulating assembly (4) includes a pressure regulating valve (41), a pressure gauge (42), and a pressure sensor (43). The pressure regulating valve (41) is fixedly installed on the outside of the valve housing (11) and communicates with the inside of the valve housing (11). The pressure gauge (42) is fixedly installed on the outside of the pressure regulating valve (41). The pressure sensor (43) is fixedly installed on the inside of the valve housing (11). The pressure sensor (43) is located on one side of the backflush outlet (13). An adjustment knob (44) is provided on the outside of the pressure regulating valve (41).

6. The backflush valve of the air intake impurity filter according to claim 1, characterized in that, The sealing and protective assembly (5) includes a flange connecting plate (51), a sealing gasket (52) and a dust ring (53). The flange connecting plate (51) is fixedly installed on one end of the valve body (11) near the backflush outlet (13). The sealing gasket (52) is fixedly installed on the mating surface of the flange connecting plate (51). The dust ring (53) is fixedly installed on the inner edge of the backflush outlet (13). The flange connecting plate (51) is provided with connecting bolt holes (54).

7. The backflush valve of the air intake impurity filter according to claim 1, characterized in that, The control and monitoring component (6) includes a controller (61), an operation button (62), and a status display screen (63). The controller (61) is fixedly installed on the outside of the valve body (11). The operation button (62) and the status display screen (63) are both fixedly installed on the outside of the controller (61). The controller (61) is electrically connected to the drive cylinder (31) and the pressure sensor (43) respectively. A timing module (64) is provided on the inside of the controller (61) for setting the backflush interval time.

8. The backflush valve of the air intake impurity filter according to claim 4, characterized in that, A cylinder cover (35) is provided on the outside of the drive cylinder (31). The cylinder cover (35) is fixedly installed on the top of the mounting cavity (15). A heat dissipation hole (36) is provided on the outside of the cylinder cover (35). A dustproof telescopic sleeve (37) is provided on the outside of the piston rod (32). The two ends of the dustproof telescopic sleeve (37) are fixedly connected to the drive cylinder (31) and the sealing valve core (33) respectively.

Images