Heating and ventilation pipeline filtering dirt separator

Abstract

The invention discloses a heating and ventilation pipeline filtering dirt separator, and belongs to the technical field of heating and ventilation pipeline assemblies. Comprising an inclined tee joint, a stainless steel filter screen, a pipe sealing seat, a dirt removal valve and a drainage pipe set, and a neck opening is formed in the inner side of the inclined tee joint; the neck opening is provided with a blocking edge close to the input end; the stainless steel filter screen is of a cylindrical structure, one end of the stainless steel filter screen is installed on the neck opening, and the end portion of the stainless steel filter screen is attached to the blocking edge. The other end of the stainless steel filter screen is butted with the inclined end of the inclined tee joint; the pipe sealing seat comprises a pipe seat body screwed with the inclined end of the inclined tee joint, and a guide ring seat attached to the inner wall of the stainless steel filter screen is integrally manufactured at the front end of the pipe seat body; the stainless steel filter screen is attached to the end part of the tube seat body; according to the heating and ventilation pipeline filtering dirt separator, online cleaning of the stainless steel filter screen is achieved through flowing medium pressure, and normal work of a heating and ventilation system is not caused when flowing media containing impurities are discharged.

Description

Technical Field

[0001] The present invention specifically relates to a HVAC pipeline filter and dirt remover, and belongs to the technical field of HVAC pipeline components. Background Art

[0002] HVAC pipe filtration and decontamination is a critical component of HVAC systems. Its purpose is to filter and remove solid particles, sediment, impurities, and dirt from the pipes, thereby maintaining the normal operation of the pipes and equipment, extending their lifespan, and ensuring efficient system operation. Existing decontamination devices, such as Chinese Patent Authorization Publication No. CN222489134U, disclose a HVAC pipe filtration and decontamination device. The device comprises a main pipe with an external threaded top, a flexibly connected pipe cap at the top of the main pipe, a fixedly connected positioning block above the pipe cap, a filter barrel mesh connected to the pipe cap, and a connecting pipe connected to the filter barrel mesh. This structure, by providing a segmented design for the decontamination device, facilitates quick disassembly for internal cleaning. A control assembly is used to control the water output, facilitating discharge according to demand. Another example is Chinese Patent Authorization Publication No. CN218047044U, which discloses an automatically cleanable HVAC filter. While this filter can automatically clean, effectively improving filter cleaning efficiency, it requires a motor drive, and a roller brush can clog the filter pores. Furthermore, the HVAC system must be shut down for wastewater treatment. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a HVAC pipe filter and decontamination device, which uses fluid pressure to achieve online cleaning of the stainless steel filter screen. When the fluid medium containing impurities is discharged, it will not affect the normal operation of the HVAC system.

[0004] The HVAC pipe filter and dirt remover of the present invention comprises: An oblique tee, wherein a neck is provided on the inner side of the oblique tee; a retaining edge is provided on the neck near the input end; A stainless steel filter screen, the stainless steel filter screen is a cylindrical structure, one end of the stainless steel filter screen is installed with the neck, and the end is in contact with the retaining edge; the other end of the stainless steel filter screen is connected to the inclined end of the oblique tee; Sealing pipe seat; the sealing pipe seat includes a pipe seat body that is screwed to the inclined end of the oblique tee, and the front end of the pipe seat body is integrally made with a guide ring seat that fits with the inner wall of the stainless steel filter screen; the stainless steel filter screen fits with the end of the pipe seat body; A decontamination valve, the decontamination valve comprising a tube cavity seat screwed onto the lower end of the tube seat body, the tube cavity seat being provided with a plurality of drainage ports at one end thereof close to the guide ring seat; a limited position seat being integrally formed on the outside of the tube cavity seat and on the inner side of the drainage port; a downwardly protruding spring tube compartment being integrally formed at the center of the tube cavity seat; a first spring body being provided on the inner side of the spring tube compartment; a sealing plate being affixed to the bottom of the guide ring seat, a protruding column being fixed at the center of the bottom surface of the sealing plate, the protruding column being movably engaged with the spring tube compartment, the thin-diameter end of the protruding column being movably passed through the first spring body and movably passed through the bottom of the spring tube compartment; A discharge pipe assembly is fixed to the bottom of the spring tube bin.

[0005] When the filter is closed, the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the filter element, and the filter element is pressed against the

[0006] Furthermore, the discharge pipe group includes a discharge pipe section, and a first valve body and a second valve body are fixed at both ends of the discharge pipe section, and the first valve body is fixed to the bottom of the spring tube warehouse.

[0007] The discharge pipe group adopts a discharge pipe section, a first valve body and a second valve body structure. At the same time, only one of the first valve body and the second valve body can be opened, that is, when the first valve body is opened, the second valve body is closed; when the second valve body is opened, the first valve body is closed, so that the third end of the oblique tee is always in a closed state; through the cooperation of the first valve body and the second valve body, the sewage containing impurities in the discharge pipe group can be discharged without affecting the normal operation of the HVAC system.

[0008] Furthermore, the drainage pipe section is a tee; a second filter is fixed to the third end of the tee, and the second filter is connected to the return pipe network; the tee can be cleaned regularly, and when cleaning, the first valve body and the pipe valve between the second filter and the return pipe network are closed, and at the same time, the second valve body is opened to flush the inside of the tee. In addition, the tee can be replaced regularly; when replacing, the first valve body needs to be locked, and the entire replacement process does not affect the normal operation of the HVAC system; the second filter is connected through the third end of the tee, and after the impurities in the drainage pipe section are filtered by the second filter, the filter medium is sent back to the return pipe network, and the impurities can be discharged through the second valve body at the bottom of the tee.

[0009] Furthermore, a first electrically controlled valve is fixed to the discharge end of the second filter; the first electrically controlled valve is connected to the return pipe network; a pressure transmitter is also installed on the three-way pipe; the pressure transmitter is linked to the first electrically controlled valve through a controller; the pipe pressure of the three-way pipe is monitored in real time by the pressure transmitter, and when the pipe pressure reaches the set value, the first electrically controlled valve is opened to discharge the filtrate into the return pipe network, so that the three-way pipe is always in a low-pressure state, thereby enabling the decontamination device to be regularly decontaminated; at this time, the filter decontamination device is used as a heat-using end as a whole, and after the first electrically controlled valve is opened, it is closed within the set time, avoiding the long-term overlap of the sealing plate opening and the first electrically controlled valve opening, resulting in energy waste.

[0010] Furthermore, the diagonal side of the oblique tee is integrally formed with an oblique pipe section, the top of the oblique pipe section is fixed with an automatic dirt removal unit, the automatic dirt removal unit includes a pressure pipe warehouse, the bottom of the pressure pipe warehouse is integrally formed with a guide tube, a driving rod is slidingly provided on the inner side of the oblique pipe section, the top of the driving rod is inserted into the guide tube and fixed with a plug; the driving rod is sleeved with a second spring body between the plug and the oblique pipe section; a scraper ring is movably fitted on the inner wall of the stainless steel filter screen; a grille is fixed on the inner side of the scraper ring; the driving rod is fixed to the center of the grille; a pressure sampling tube connected to the heating pipeline is provided on the pressure pipe warehouse.

[0011] When the outlet end of the oblique tee is closed, the inlet end of the oblique tee maintains the pipe pressure, and the fluid enters the pressure pipe bin through the pressure sampling tube. The fluid accumulates through the pressure pipe bin. When the water pressure reaches the set value, the plug is driven downward along the guide tube, thereby causing the driving rod to move downward synchronously, driving the scraper ring downward along the stainless steel filter screen, and the scraper ring scrapes impurities from the stainless steel filter screen. When the scraper ring reaches the bottom of the stainless steel filter screen, it pushes down the sealing plate, thereby opening the flow channel at the third end of the oblique tee; the scraped impurities are sent to the pipe cavity seat through the fluid medium, and then to the discharge pipe group.

[0012] Furthermore, a second electrically controlled valve is provided on the heating pipeline; the second electrically controlled valve can be opened periodically to realize online cleaning of the decontamination device.

[0013] Furthermore, a brush is provided on the outside of the scraper ring, and the brush is movably fitted to the inner wall of the stainless steel filter.

[0014] Furthermore, a plurality of contacts that are movably in contact with the sealing plate are fixed to the inner bottom of the scraper ring; when the scraper ring moves to the bottom, the contacts can drive the scraper ring downward, thereby opening the flow channel at the third end of the oblique tee.

[0015] Furthermore, the top of the stainless steel filter screen is integrally formed with a threaded pipe section, and the threaded pipe section is movably screwed to the neck.

[0016] Compared with the prior art, the HVAC pipe filter and decontamination device of the present invention uses fluid pressure to trigger the opening of the sealing plate and to perform online cleaning of the stainless steel filter screen, and introduces the impurity-containing fluid medium into the discharge pipe group. When the HVAC system is working, the impurity-containing fluid medium in the discharge pipe group can be discharged externally without interfering with the normal operation of the HVAC system, thereby realizing online cleaning of the stainless steel filter screen. When the pipe pressure fluctuates, such as when the terminal valve opening changes, the stainless steel filter screen can be automatically dynamically scrubbed; in addition, when cleaning the stainless steel filter screen, the decontamination device can be used as the hot end, and after the impurity-containing fluid medium enters the discharge pipe group, it is directly returned to the return pipe network through filtration, so that the cleaning filtered water refluxes, forming a closed-loop decontamination. The decontaminated impurities can be discharged outside the first valve body or the tee pipe can be replaced regularly. When replacing, the first valve body needs to be locked, and the entire replacement process does not affect the normal operation of the HVAC system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the HVAC pipe filter and decontamination device of the present invention.

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0019] Figure 3 For the present invention Figure 1 Schematic diagram of the locally enlarged structure at point B in the middle.

[0020] Figure 4 This is a schematic diagram of the installation structure of the pipe sealing seat and the decontamination valve of the present invention.

[0021] Figure 5 This is a schematic diagram of the HVAC pipe filter and decontamination device connected to the return pipe network structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the overall structure of Example 2 of the HVAC pipe filter and decontamination device of the present invention.

[0023] Figure 7 It is a schematic diagram of the overall structure of the execution components of the automatic decontamination unit of the present invention.

[0024] Figure 8 This is a schematic diagram of the overall structure of the HVAC pipe filter and decontamination device and the second electric control valve installed in the present invention.

[0025] Figure numerals: 1. oblique tee, 2. neck, 3. retaining edge, 4. stainless steel filter, 5. tube seat, 6. guide ring seat, 7. tube cavity seat, 8. drain port, 9. limit seat, 10. spring tube magazine, 11. first spring body, 12. sealing plate, 13. boss, 14. drainage pipe section, 15. first valve body, 16. second valve body, 17. contact, 18. second filter, 19. first electric control valve, 20. pressure transmitter, 21. oblique pipe section, 22. pressure tube magazine, 23. guide tube, 24. driving rod, 25. plug, 26. second spring body, 27. scraper ring, 28. grid, 29 pressure sampling tube, 30. second electric control valve, 31. brush. DETAILED DESCRIPTION

[0026] Example 1: like Figures 1 to 5 The HVAC duct filter and dirt remover shown includes: An oblique tee 1 is provided with a neck 2 on its inner side; a retaining edge 3 is provided near the input end of the neck 2; The stainless steel filter screen 4 is a cylindrical structure, one end of the stainless steel filter screen 4 is installed with the neck 2, and the end is in contact with the retaining edge 3; the other end of the stainless steel filter screen 4 is connected to the inclined end of the oblique tee 1; Sealing pipe seat; the sealing pipe seat includes a pipe seat body 5 that is screwed to the inclined end of the oblique tee 1, and the front end of the pipe seat body 5 is integrally made with a guide ring seat 6 that fits the inner wall of the stainless steel filter screen 4; the stainless steel filter screen 4 fits the end of the pipe seat body 5; The decontamination valve includes a tube cavity seat 7 screwed to the lower end of the tube seat body 5, and a plurality of drainage ports 8 are opened on the tube cavity seat 7 near one end of the guide ring seat 6; a limit seat 9 is integrally formed on the outside of the tube cavity seat 7 and inside the drainage port 8; a downwardly protruding spring tube compartment 10 is integrally formed at the center of the tube cavity seat 7; a first spring body 11 is provided inside the spring tube compartment 10; a sealing plate 12 is attached to the bottom of the guide ring seat 6, and a protruding column 13 is fixed at the center of the bottom surface of the sealing plate 12, and the protruding column 13 is movably engaged with the spring tube compartment 10, and the thin-diameter end of the protruding column 13 movably passes through the first spring body 11 and movably protrudes from the bottom of the spring tube compartment 10; The discharge pipe group is fixed to the bottom of the spring tube warehouse 10.

[0027] When in use, the water inlet and outlet of the oblique tee 1 are connected in series to the heating pipeline. The fluid of the heating pipeline enters the oblique tee 1 through the water inlet, and is filtered through the stainless steel filter 4. The fluid is discharged from the oblique tee 1 through the water outlet. The impurities in the fluid are filtered and intercepted by the stainless steel filter 4. When the outlet end of the oblique tee 1 is closed, the inlet end of the oblique tee 1 maintains the pipe pressure. Under the action of the fluid pressure, the sealing plate 12 is pushed down. At this time, the first spring body 11 is compressed, and the protruding column 13 is on the spring. The pipe bin 10 slides downward, and the fluid medium carrying impurities enters the interior of the pipe cavity seat 7 through the discharge port 8 of the pipe cavity seat 7, and is finally discharged into the discharge pipe group. When the discharge pipe group is filled with the fluid, the entire pipe pressure is kept balanced. When the outlet end of the inclined tee 1 is opened again, the water pressure of the sealing plate 12 is reduced. At this time, the first spring body 11 drives the sealing plate 12 to reset, and the sealing plate 12 and the guide ring seat 6 are closed. When the sewage containing impurities in the discharge pipe group is discharged, the sealing plate 12 can be opened again.

[0028] The discharge pipe assembly includes a discharge pipe section 14 , with a first valve body 15 and a second valve body 16 fixed at both ends of the discharge pipe section 14 . The first valve body 15 is fixed to the bottom of the spring tube magazine 10 .

[0029] The discharge pipe group adopts a discharge pipe section 14, a first valve body 15 and a second valve body 16 structure. Only one of the first valve body 15 and the second valve body 16 can be opened. For example, when the first valve body 15 is opened, the second valve body 16 is closed; when the second valve body 16 is opened, the first valve body 15 is closed, so that the third end of the oblique tee 1 is always in a closed state; through the cooperation of the first valve body 15 and the second valve body 16, the sewage containing impurities in the discharge pipe group can be discharged.

[0030] The discharge pipe section 14 is a tee; a second filter 18 is fixed to the third end of the tee, and the second filter 18 is connected to the return pipe network; the tee can be cleaned regularly. When cleaning, the first valve body 15 and the pipe valve between the second filter 18 and the return pipe network are closed. At the same time, the second valve body 16 is opened to flush the inside of the tee. In addition, the tee can be replaced regularly; when replacing, the first valve body 15 needs to be locked, and the entire replacement process does not affect the normal operation of the HVAC system; the second filter 18 is connected through the third end of the tee, and after the impurities in the discharge pipe section 14 are filtered by the second filter 18, the filter medium is sent back to the return pipe network, and the impurities can be discharged through the second valve body 16 at the bottom of the tee.

[0031] The second filter 18 is connected to the return pipe network through the first electric control valve 19; a pressure transmitter 20 is also installed on the three-way pipe; the pressure transmitter 20 is linked to the first electric control valve 19 through a controller; the pipe pressure of the three-way pipe is monitored in real time by the pressure transmitter 20, and when the pipe pressure reaches the set value, the first electric control valve 19 is opened to discharge the filtrate into the return pipe network, so that the three-way pipe is always in a low-pressure state, thereby realizing regular decontamination of the decontaminator; after the first electric control valve 19 is opened, it is closed within the set time to avoid the sealing plate 12 being opened and the first electric control valve 19 being opened for a long time, resulting in energy waste.

[0032] Example 2: like Figures 6 to 8 The HVAC pipe filter and decontamination device shown in the figure has an oblique pipe section 21 integrally formed on the diagonal side of the oblique tee 1, and an automatic decontamination unit is fixed on the top of the oblique pipe section 21. The automatic decontamination unit includes a pressure pipe warehouse 22, and a guide tube 23 is integrally formed at the bottom of the pressure pipe warehouse 22. A driving rod 24 is slidingly provided on the inside of the oblique pipe section 21, and the top of the driving rod 24 penetrates the guide tube 23 and is fixed with a plug 25; the driving rod 24 is sleeved with a second spring body 26 between the plug 25 and the oblique pipe section 21; a scraper ring 27 is movably fitted on the inner wall of the stainless steel filter screen 4; a grille 28 is fixed on the inside of the scraper ring 27; the driving rod 24 is fixed to the grille 28; a pressure sampling tube 29 connected to the heating pipeline is provided on the pressure pipe warehouse 22.

[0033] When the outlet end of the oblique tee 1 is closed, the inlet end of the oblique tee 1 maintains the pipe pressure, and the fluid enters the pressure pipe bin 22 through the pressure sampling tube 29. The fluid accumulates through the pressure pipe bin 22. When the water pressure reaches the set value, the plug 25 is driven downward along the guide tube 23, thereby causing the driving rod 24 to move downward synchronously, driving the scraper ring 27 downward along the stainless steel filter screen 4, and the scraper ring 27 scrapes impurities from the stainless steel filter screen 4. When the scraper ring 27 reaches the bottom of the stainless steel filter screen 4, it pushes down the sealing plate 12, thereby opening the third end flow channel of the oblique tee 1; the scraped impurities are sent to the tube cavity seat 7 through the fluid medium, and then sent to the discharge pipe group.

[0034] The pressure sampling tube 29 is provided with a second electrically controlled valve 30. The second electrically controlled valve 30 can be opened periodically to realize online cleaning of the decontamination device.

[0035] A brush 31 is provided on the outside of the scraper ring 27 , and the brush 31 is movably fitted to the inner wall of the stainless steel filter screen 4 .

[0036] A plurality of contacts 17 movably abutting against the sealing plate 12 are fixed to the inner bottom of the scraper ring 27; when the scraper ring 27 moves to the bottom, the contacts 17 can drive the scraper ring 27 downward, thereby opening the flow channel at the third end of the inclined tee 1.

[0037] The top of the stainless steel filter screen 4 is integrally formed with a threaded pipe section, and the threaded pipe section is movably screwed to the neck 2 .

[0038] The above embodiments are only preferred implementations of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A HVAC pipe filter and decontamination device, characterized by: include: An oblique tee, wherein a neck is provided on the inner side of the oblique tee; a retaining edge is provided on the neck near the input end; A stainless steel filter screen, the stainless steel filter screen is a cylindrical structure, one end of the stainless steel filter screen is installed with the neck, and the end is in contact with the retaining edge; the other end of the stainless steel filter screen is connected to the inclined end of the oblique tee; Sealing pipe seat; the sealing pipe seat includes a pipe seat body that is screwed to the inclined end of the oblique tee, and the front end of the pipe seat body is integrally made with a guide ring seat that fits with the inner wall of the stainless steel filter screen; the stainless steel filter screen fits with the end of the pipe seat body; A decontamination valve, the decontamination valve comprising a tube cavity seat screwed onto the lower end of the tube seat body, the tube cavity seat being provided with a plurality of drainage ports at one end thereof close to the guide ring seat; a limited position seat being integrally formed on the outside of the tube cavity seat and on the inner side of the drainage port; a downwardly protruding spring tube compartment being integrally formed at the center of the tube cavity seat; a first spring body being provided on the inner side of the spring tube compartment; a sealing plate being affixed to the bottom of the guide ring seat, a protruding column being fixed at the center of the bottom surface of the sealing plate, the protruding column being movably engaged with the spring tube compartment, the thin-diameter end of the protruding column being movably passed through the first spring body and movably passed through the bottom of the spring tube compartment; A discharge pipe assembly is fixed to the bottom of the spring tube bin.

2. The HVAC pipe filter and dirt remover according to claim 1, characterized in that: The discharge pipe group includes a discharge pipe section, and a first valve body and a second valve body are fixed at both ends of the discharge pipe section. The first valve body is fixed to the bottom of the spring tube warehouse.

3. The HVAC pipe filter and dirt remover according to claim 2, characterized in that: The drainage pipe section is a three-way pipe; a second filter is fixed to the third end of the three-way pipe, and the second filter is connected to the return pipe network.

4. The HVAC pipe filter and decontamination device according to claim 3, characterized in that: A first electrically controlled valve is fixed to the discharge end of the second filter; the first electrically controlled valve is connected to the return pipe network; a pressure transmitter is also installed on the three-way pipe; the pressure transmitter is linked to the first electrically controlled valve through a controller.

5. The HVAC pipe filter and dirt remover according to claim 1, characterized in that: The diagonal side of the oblique tee is integrally formed with an oblique pipe section, the top of the oblique pipe section is fixed with an automatic dirt removal unit, the automatic dirt removal unit includes a pressure pipe warehouse, the bottom of the pressure pipe warehouse is integrally formed with a guide tube, a driving rod is slidingly provided on the inner side of the oblique pipe section, the top of the driving rod penetrates into the guide tube and is fixed with a plug; the driving rod is sleeved with a second spring body between the plug and the oblique pipe section; a scraper ring is movably fitted on the inner wall of the stainless steel filter screen; a grille is fixed on the inner side of the scraper ring; the driving rod is fixed to the center of the grille; a pressure sampling tube connected to the heating pipeline is provided on the pressure pipe warehouse.

6. The HVAC pipe filter and dirt remover according to claim 5, characterized in that: A second electrically controlled valve is provided on the heating pipeline.

7. The HVAC pipe filter and dirt remover according to claim 5, characterized in that: A brush is provided on the outside of the scraper ring, and the brush is movably fitted with the inner wall of the stainless steel filter screen.

8. The HVAC pipe filter and dirt remover according to claim 5, characterized in that: A plurality of contacts that movably abut against the sealing plate are fixed on the inner bottom of the scraper ring.

9. The HVAC pipe filter and decontamination device according to claim 1, characterized in that: The top of the stainless steel filter screen is integrally formed with a threaded pipe section, and the threaded pipe section is movably screwed to the neck.

Images