Front filtering device for floor heating

Abstract

The invention provides a pre-filtering device for floor heating, and relates to the technical field of floor heating filtration, the pre-filtering device comprises a shell, a first filtering cavity and a second filtering cavity are formed in the shell, an exhaust structure is arranged in the shell, the exhaust structure corresponds to the first filtering cavity, a connecting port is formed between the first filtering cavity and the second filtering cavity, and the first filtering cavity and the second filtering cavity are communicated through the connecting port. A water inlet structure is arranged in the shell, a first filtering structure and a first cleaning structure are arranged in the first filtering cavity, the first filtering structure corresponds to the first cleaning structure, a first drainage structure is arranged on the first filtering structure, and a second filtering structure and a second cleaning structure are arranged in the second filtering cavity. According to the heating water filtering device, the connecting opening is formed between the first filtering cavity and the second filtering cavity, the first filtering structure is installed in the first filtering cavity, the second filtering structure is installed in the second filtering cavity, and heating water can be filtered through the first filtering structure and the second filtering structure; therefore, solid residues in the heating water can be prevented from entering the heating pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of floor heating filtration, in particular to a pre-filter device for floor heating. Background Art

[0002] The full name of geothermal heating is low-temperature floor radiant heating, abbreviated as floor heating. It uses hot water with a temperature not higher than 60°C as a heat medium, which circulates in the heating pipe to heat the floor and provides heat to the room through the ground in the form of radiation and convection. Floor heating is achieved by heating water and then circulating it through the floor heating pipe. After circulation, heat is provided to the required position through heat. When using traditional floor heating pipes, there may be certain impurities in the water body. After long-term use, impurities accumulate in the heating pipes, which can easily cause the heating pipes or circulation pumps to be blocked, resulting in slower water flow, thus affecting the heating effect. In addition, there is no heating for most of the time every year. When heating starts, there is likely to be a large amount of gas in the water body, which not only affects the heating temperature, but also easily generates noise, affecting people's experience of use.

[0003] To this end, the present invention provides a pre-filtering device for floor heating. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pre-filter device for floor heating to solve the problems raised in the above-mentioned background technology. The present invention can automatically or manually exhaust the air through the exhaust structure, thereby reducing the amount of gas in the water body, preventing the heating water from containing a large amount of gas at the beginning of the gas supply, resulting in a decrease in the heating temperature, and preventing the generation of large noise resulting in a poor user experience; the heating water can be filtered through the first filter structure and the second filter structure, thereby reducing the solid residue in the heating water from entering the heating pipe, and the first filter structure can be cleaned by the first cleaning structure, and the second filter structure can be cleaned by the second cleaning structure, thereby preventing the first filter structure and the second filter structure from being blocked; the frequency of cleaning the solid residue can be extended, reducing the work intensity, and the accumulated impurities can be cleaned while filtering impurities, thereby improving work efficiency. The normal heating effect will not be affected during cleaning, ensuring the heating experience, and the impurities can be automatically cleaned. The impurities only need to be removed after cleaning, which greatly reduces the work intensity and improves the cleaning efficiency of impurities.

[0005] In order to achieve the above-mentioned objectives, the present invention is implemented through the following technical solutions: a pre-filter device for floor heating, comprising an outer shell, a first filter chamber and a second filter chamber being provided in the outer shell, an exhaust structure being installed in the outer shell, the exhaust structure corresponding to the first filter chamber, a connecting port being provided between the first filter chamber and the second filter chamber, a water inlet structure being installed in the outer shell, a first filter structure and a first cleaning structure being installed in the first filter chamber, the first filter structure corresponding to the first cleaning structure, a first drainage structure being installed on the first filter structure, a second filter structure and a second cleaning structure being installed in the second filter chamber, the second cleaning structure corresponding to the second filter structure, the first drainage structure corresponding to the second filter structure, a collecting box being installed on the lower side of the outer shell, a driving structure and a second drainage structure being installed in the collecting box, the second drainage structure corresponding to the driving structure, the second drainage structure corresponding to the second filter structure and the first drainage structure, and the driving structure corresponding to the second cleaning structure.

[0006] Furthermore, the exhaust structure includes an exhaust pipe, which is connected to the first filter chamber. A plug is installed at the end of the exhaust pipe, and multiple springs are fixed between the plug and the outer shell. The water inlet structure includes a water inlet pipe, which is connected to the first filter chamber.

[0007] Furthermore, the first cleaning structure includes a first rotating frame that rotates and cooperates with the first filter chamber, a first scraper rod is fixed on the first rotating frame, a connecting shaft is fixed on the first scraper rod, a plurality of fan blades are fixed on the connecting shaft, the fan blades are located in the water inlet pipe, a fixed frame is fixed in the first filter chamber, the first filtering structure includes a filter ball, the filter ball is fixedly connected to the fixed frame, and a plurality of filter holes are opened on the lower circumference of the filter ball.

[0008] Furthermore, the first drainage structure includes a first water outlet pipe, which is connected to the filter ball. An air bag is installed on the top of the second filter chamber. The second filter structure includes a filter block installed in the second filter chamber. The filter block includes a filter plate. A water outlet is opened at the bottom of the filter block. One end of the first water outlet pipe is located in the water outlet. A first blocking plate is fixed on the first water outlet pipe. A connecting pipe is fixed on the filter plate. The end of the connecting pipe is located in the connecting port. A second blocking plate is fixed on the end of the connecting pipe. The second blocking plate corresponds to the connecting port.

[0009] Furthermore, the second cleaning structure includes a blocking ring that is rotatably engaged in the second filter chamber, a second rotating frame that is rotatably engaged on the filter plate, a second scraper rod is fixed on the second rotating frame, the second scraper rod is in contact with the filter plate, the filter plate has a conical structure, the top of the blocking ring is a sloped structure, a first connecting rod is installed between the second scraper rod and the blocking ring, one end of the first connecting rod is rotatably connected to the second scraper rod, and the other end of the first connecting rod is rotatably connected to the blocking ring.

[0010] Furthermore, the collecting box is connected to the second filter chamber, a bottom plate is installed at the bottom of the collecting box, a plurality of second connecting rods are fixed between the bottom plate and the blocking ring, and the second drainage structure includes a second water outlet pipe that slides in the collecting box, and the second water outlet pipe is connected to the water outlet and the first water outlet pipe.

[0011] Furthermore, the driving structure includes a motor fixed to the bottom of the collection box, a first gear and a second gear are rotatably engaged in the collection box, the first gear is fixedly connected to the output end of the motor, the first gear is meshed with the second gear, a sliding tube is slidably engaged in the collection box, the sliding tube is threadedly engaged with the second gear, the sliding tube is slidably connected to the second water outlet pipe, and a reciprocating thread is installed on the sliding tube.

[0012] Furthermore, a sliding groove is provided at the bottom of the collection box, which corresponds to the sliding tube. Multiple first electromagnets are fixed in the sliding tube. Multiple fixing rods are fixed on the lower side of the collection box. Second electromagnets are installed in the fixing rods. Both the first electromagnet and the second electromagnet correspond to the second water outlet pipe.

[0013] Furthermore, the second gear is fixedly connected to the bottom plate, the collection box is rotatably connected to the bottom plate, and the bottom plate is located on the upper side of the first gear and the second gear.

[0014] Furthermore, a discharge port is provided on one side of the collection box, and grooves and card slots are respectively provided on both sides of the discharge port. A box door is installed in the discharge port, and the box door corresponds to the groove and card slot.

[0015] Beneficial effects of the present invention: 1. Install an exhaust structure inside the shell, which can be used for automatic or manual exhaust, thereby reducing the amount of gas in the water body, preventing the heating water from containing a large amount of gas at the beginning of gas supply, which causes the heating temperature to drop, and preventing the generation of loud noises that lead to a poor user experience.

[0016] 2. A connecting port is provided between the first filter chamber and the second filter chamber. The first filter structure and the first cleaning structure are installed in the first filter chamber, and the second filter structure and the second cleaning structure are installed in the second filter chamber. The heating water can be filtered by the first filter structure and the second filter structure, thereby reducing the solid residue in the heating water from entering the heating pipe. The first filter structure can be cleaned by the first cleaning structure, and the second filter structure can be cleaned by the second cleaning structure, thereby preventing the first filter structure and the second filter structure from being blocked, thereby ensuring the filtering effect of the first filter structure and the second filter structure.

[0017] 3. A collection box is installed on the lower side of the outer shell, and a driving structure and a second drainage structure are installed in the collection box. Solid residues can be collected through the collection box, thereby extending the frequency of cleaning the solid residues and reducing work intensity. The second cleaning structure can be driven by the driving structure to work for cleaning, and the position of the second filtering structure can be adjusted by the driving structure to control the device to filter the heating water or clean the impurities under the filter, and the impurities can be filtered while cleaning the accumulated impurities, thereby improving work efficiency. The normal heating effect will not be affected during cleaning, and the heating experience is guaranteed. The impurities can be automatically cleaned, and the impurities only need to be taken out after cleaning, which greatly reduces the work intensity and improves the efficiency of cleaning impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall assembly three-dimensional structure of a pre-filter device for floor heating according to the present invention; Figure 2 This is a schematic diagram of the overall assembly cross-sectional structure of a pre-filter device for floor heating according to the present invention; Figure 3 for Figure 2 Schematic diagram at A in the middle; Figure 4 for Figure 2 Schematic diagram at point B in the middle; Figure 5 for Figure 2 Schematic diagram at C in the middle; Figure 6 This is a schematic diagram of the assembly structure of a collection box in a pre-filter device for floor heating according to the present invention; Figure 7 This is a schematic diagram of the assembly structure of the first gear and the second gear in a pre-filter device for floor heating according to the present invention; Figure 8 This is a schematic diagram of the assembly structure of a sliding groove and a sliding pipe in a pre-filter device for floor heating according to the present invention; Figure 9 This is a schematic diagram of the assembled three-dimensional structure of the first filter structure and the second filter structure in a pre-filter device for floor heating according to the present invention; Figure 10 This is an exploded view of a first filter structure and a second filter structure in a pre-filter device for floor heating according to the present invention; Figure 11 This is a schematic diagram of the assembled three-dimensional structure of a sliding pipe in a pre-filter device for floor heating according to the present invention; In the figure: 1, housing; 2, water inlet pipe; 3, first filter chamber; 4, exhaust pipe; 5, plug; 6, spring; 7, fixing frame; 8, filter ball; 9, filter hole; 10, first rotating frame; 11, first scraper; 12, connecting shaft; 13, fan blade; 14, first water outlet pipe; 15, air bag; 16, second filter chamber; 17, connecting port; 18, filter block; 19, filter plate; 20, connecting pipe; 21, first plugging plate; 22, water outlet; 23 , second blocking plate; 24, second water outlet pipe; 25, blocking ring; 26, second scraper rod; 27, first connecting rod; 28, second rotating frame; 29, collecting box; 30, motor; 31, discharge port; 32, groove; 33, slot; 34, box door; 35, first gear; 36, second gear; 37, sliding groove; 38, sliding tube; 39, fixing rod; 40, first electromagnet; 41, second electromagnet; 42, second connecting rod; 43, bottom plate. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figures 1 to 11 The present invention provides a technical solution: a pre-filter device for floor heating, comprising a shell 1, wherein a first filter chamber 3 and a second filter chamber 16 are provided in the shell 1, an exhaust structure is installed in the shell 1, the exhaust structure corresponds to the first filter chamber 3, and a connecting port 17 is provided between the first filter chamber 3 and the second filter chamber 16, a water inlet structure is installed in the shell 1, a first filter structure and a first cleaning structure are installed in the first filter chamber 3, the first filter structure corresponds to the first cleaning structure, a first drainage structure is installed on the first filter structure, a second filter structure and a second cleaning structure are installed in the second filter chamber 16, the second cleaning structure corresponds to the second filter structure, the first drainage structure corresponds to the second filter structure, a collecting box 29 is installed on the lower side of the shell 1, a driving structure and a second drainage structure are installed in the collecting box 29, the second drainage structure corresponds to the driving structure, the second drainage structure corresponds to the second filter structure and the first drainage structure, and the driving structure corresponds to the second cleaning structure.

[0021] In this embodiment, the exhaust structure includes an exhaust pipe 4, which is connected to the first filter chamber 3. A plug 5 is installed at the end of the exhaust pipe 4. A plurality of springs 6 are fixed between the plug 5 and the outer shell 1. The water inlet structure includes a water inlet pipe 2, which is connected to the first filter chamber 3.

[0022] Specifically, when active exhaust is performed, the plug 5 can be manually lifted upward to connect the exhaust pipe 4 to the outside. At this time, the heating water enters the first filter chamber 3 and falls to the bottom of the first filter chamber 3. The gas naturally rises upward, so that the greater air pressure presses the gas out of the exhaust pipe 4, thereby realizing active exhaust. When passive exhaust is required, the valve of the heating pipe can be closed to allow the heating water to enter and accumulate in the first filter chamber 3. With the entry of the heating water, the greater pressure can push the gas into the exhaust pipe 4, so that the air pressure in the exhaust pipe 4 increases, thereby lifting the plug 5 upward, and exhaust can be performed, thereby preventing a large amount of gas from entering the heating pipe and affecting the heating, ensuring the heating effect, and preventing noise, thereby improving the user experience.

[0023] The first cleaning structure includes a first rotating frame 10 that rotates and fits in the first filter chamber 3. A first scraper rod 11 is fixed on the first rotating frame 10. A connecting shaft 12 is fixed on the first scraper rod 11. A plurality of fan blades 13 are fixed on the connecting shaft 12. The fan blades 13 are located in the water inlet pipe 2. A fixing frame 7 is fixed in the first filter chamber 3. The first filtering structure includes a filter ball 8. The filter ball 8 is fixedly connected to the fixing frame 7. A plurality of filter holes 9 are provided on the lower circumferential side of the filter ball 8.

[0024] Specifically, when heating water is introduced, the heating water enters the first filter chamber 3 from the water inlet pipe 2, which drives the fan blades 13 to rotate, thereby driving the first scraper 11 to rotate, so that the first scraper 11 cleans the surface of the filter ball 8, thereby preventing the filter ball 8 from being blocked by solid impurities, ensuring the filtering effect of the filter ball 8, and filtering the heating water through the filter ball 8. The filter hole 9 at the bottom can ensure that the heating water enters the filter ball 8, and the space above the filter ball 8 can be provided to air, thereby preventing too much air from entering the heating pipe.

[0025] The first drainage structure includes a first water outlet pipe 14, which is connected to the filter ball 8. An air bag 15 is installed at the top of the second filter chamber 16. The second filter structure includes a filter block 18 installed in the second filter chamber 16. The filter block 18 includes a filter plate 19. A water outlet 22 is opened at the bottom of the filter block 18. One end of the first water outlet pipe 14 is located in the water outlet 22. A first blocking plate 21 is fixed on the first water outlet pipe 14. A connecting pipe 20 is fixed on the filter plate 19. The end of the connecting pipe 20 is located in the connecting port 17. A second blocking plate 23 is fixed to the end of the connecting pipe 20. The second blocking plate 23 corresponds to the connecting port 17.

[0026] Specifically, the heating water entering the filter ball 8 can be directly discharged into the second water outlet pipe 24 through the first water outlet pipe 14, and then enter the heating pipe for heating. When the water in the residue needs to be filtered and recovered, the heating water with residue can be filtered through the filter plate 19, so that the water in the residue can be recovered, reducing the waste of heating water. When recycling water, the air bag 15 can be used to alleviate the change of air pressure, thereby ensuring smooth water flow; the position of the filter block 18 can also be adjusted so that the filter plate 19 and the filter ball 8 can filter the heating water at the same time, thereby alleviating the working pressure of the filter ball 8, extending the service life of the filter ball 8, and ensuring the filtering effect of the filter ball 8.

[0027] The second cleaning structure includes a blocking ring 25 that is rotatably fitted in the second filter chamber 16, a second rotating frame 28 is rotatably fitted on the filter plate 19, a second scraper 26 is fixed on the second rotating frame 28, the second scraper 26 is in contact with the filter plate 19, the filter plate 19 has a conical structure, the top of the blocking ring 25 is an inclined structure, a first connecting rod 27 is installed between the second scraper 26 and the blocking ring 25, one end of the first connecting rod 27 is rotatably connected to the second scraper 26, and the other end of the first connecting rod 27 is rotatably connected to the blocking ring 25, the collecting box 29 is connected to the second filter chamber 16, a bottom plate 43 is installed at the bottom of the collecting box 29, and a plurality of second connecting rods 42 are fixed between the bottom plate 43 and the blocking ring 25, the second drainage structure includes a second water outlet pipe 24 that is slidably fitted in the collecting box 29, the second water outlet pipe 24 is connected to the water outlet 22 and the first water outlet pipe 14, and the driving structure includes a fixing on the bottom of the collecting box 29 The motor 30, the collection box 29 is rotatably equipped with a first gear 35 and a second gear 36, the first gear 35 is fixedly connected to the output end of the motor 30, the first gear 35 is meshed with the second gear 36, and a sliding tube 38 is slidably equipped in the collection box 29, the sliding tube 38 is threadedly engaged with the second gear 36, the sliding tube 38 is slidably connected to the second water outlet pipe 24, and a reciprocating thread is installed on the sliding tube 38. A sliding groove 37 is provided at the bottom of the collection box 29, and the sliding groove 37 corresponds to the sliding tube 38. A plurality of first electromagnets 40 are fixed in the sliding tube 38, and a plurality of fixing rods 39 are fixed on the lower side of the collection box 29. A second electromagnet 41 is installed in the fixing rod 39. The first electromagnet 40 and the second electromagnet 41 are both corresponding to the second water outlet pipe 24. The second gear 36 is fixedly connected to the bottom plate 43, and the collection box 29 is rotatably connected to the bottom plate 43. The bottom plate 43 is located on the upper side of the first gear 35 and the second gear 36.

[0028] When the second electromagnet 41 is powered on, the second electromagnet 41 is fixedly connected to the second water outlet pipe 24, thereby fixing the position of the filter block 18. At this time, the stability of the filter block 18 can be ensured, so that the filter balls 8 and the filter plate 19 can play a more stable filtering effect. When the second electromagnet 41 is powered off and the first electromagnet 40 is powered on, the first electromagnet 40 is adsorbed and fixed to the second water outlet pipe 24, so that the sliding tube 38 can slide up and down and drive the second water outlet pipe 24 to slide up and down. When the sliding tube 38 drives the second water outlet pipe 24 to slide downward, the second water outlet pipe 24 drives the filter block 18 to move synchronously, thereby creating a gap between the filter block 18 and the blocking ring 25. At the same time, the first water outlet pipe 14 moves upward relatively, and the first blocking plate 21 and the water outlet 22 are connected. Separation, the filter block 18 drives the second blocking plate 23 to enter the connecting port 17 through the connecting pipe 20. In the process of separation of the filter block 18 and the blocking ring 25, the water in the second filter chamber 16 can be filtered by the filter plate 19 and flow into the second water outlet pipe 24 and then discharged until the filter block 18 and the blocking ring 25 are completely separated. At this time, the residue can be discharged through the gap between the filter block 18 and the blocking ring 25, and in the process of discharging the residue, the blocking ring 25 is driven by the second gear 36 to rotate and drive the second scraper 26 to scrape the surface of the filter plate 19, thereby improving the efficiency of residue cleaning, and the working state of the device can be adjusted according to the position of the blocking ring 25, the second blocking plate 23 and the first blocking plate 21, that is, slag discharge work, filtering work using the filter ball 8 alone and filtering work using the filter ball 8 and the filter plate 19 simultaneously, thereby making the device more flexible to use and expanding the scope of application of the device, so that the device can be suitable for filtering heating water with different amounts of welding slag to prevent residue from clogging the heating pipe.

[0029] A discharge port 31 is provided on one side of the collection box 29 , and grooves 32 and slots 33 are provided on both sides of the discharge port 31 . A box door 34 is installed in the discharge port 31 , and the box door 34 corresponds to the grooves 32 and slots 33 .

[0030] Specifically, when the residue needs to be cleaned, the box door 34 can be manually slid so that the box door 34 enters the groove 32, and the residue in the collection box 29 can be cleaned. When the cleaning is completed, the box door 34 is manually slid so that the box door 34 enters the discharge port 31, and one end of the box door 34 is snapped into the card slot 33, thereby fixing the box door 34, and the residue can continue to be collected through the collection box 29.

[0031] Working process: When heating water is introduced, the heating water enters the first filter chamber 3 from the water inlet pipe 2, which drives the fan blade 13 to rotate, thereby driving the first scraper 11 to rotate, so that the first scraper 11 cleans the surface of the filter ball 8, and the heating water entering the filter ball 8 can be directly discharged into the second water outlet pipe 24 through the first water outlet pipe 14, and then enter the heating pipe for heating. When it is necessary to filter and recover the water in the residue, the heating water with the residue can be filtered through the filter plate 19 at this time, so that the water in the residue can be recovered, reducing the waste of heating water. When the water is recovered, the motor 30 is started, and the water can be discharged through the filter The motor 30 drives the first gear 35 to rotate, so that the first gear 35 and the second gear 36 are engaged and rotated, which can drive the sliding tube 38 to slide up and down. When the second electromagnet 41 is energized, the second electromagnet 41 is fixedly connected to the second water outlet pipe 24, so that the position of the filter block 18 can be fixedly connected. At this time, the stability of the filter block 18 can be guaranteed, so that the filter ball 8 and the filter plate 19 can achieve a more stable filtering effect; when the second electromagnet 41 is powered off and the first electromagnet 40 is energized, the first electromagnet 40 is adsorbed and fixed to the second water outlet pipe 24, so that the sliding tube 38 can slide up and down, which can drive the second The water outlet pipe 24 slides up and down. When the sliding pipe 38 drives the second water outlet pipe 24 to slide downward, the second water outlet pipe 24 drives the filter block 18 to move synchronously, thereby creating a gap between the filter block 18 and the blocking ring 25. At the same time, the first water outlet pipe 14 moves upward relatively, the first blocking plate 21 is separated from the water outlet 22, and the filter block 18 drives the second blocking plate 23 to enter the connecting port 17 through the connecting pipe 20. In the process of separation of the filter block 18 from the blocking ring 25, the water in the second filter chamber 16 can be filtered by the filter plate 19 and flow into the second water outlet pipe 24 and then discharged until the filter block 18 is completely separated from the blocking ring 25. At this time, the water can pass through the filter block The residue is discharged through the gap between 18 and the blocking ring 25, and in the process of discharging the residue, the blocking ring 25 is rotated by the second gear 36 to drive the second scraper 26 to scrape the surface of the filter plate 19, thereby improving the efficiency of residue cleaning. When the residue needs to be cleaned, the box door 34 can be manually slid so that the box door 34 enters the groove 32, and the residue in the collection box 29 can be cleaned. When the cleaning is completed, the box door 34 is manually slid so that the box door 34 enters the discharge port 31, and one end of the box door 34 is snapped into the card slot 33, thereby fixing the box door 34, and the residue can continue to be collected through the collection box 29.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pre-filter device for floor heating, comprising a housing (1), characterized in that: The shell (1) is provided with a first filter chamber (3) and a second filter chamber (16), an exhaust structure is installed in the shell (1), the exhaust structure corresponds to the first filter chamber (3), a connecting port (17) is provided between the first filter chamber (3) and the second filter chamber (16), a water inlet structure is installed in the shell (1), a first filter structure and a first cleaning structure are installed in the first filter chamber (3), the first filter structure corresponds to the first cleaning structure, a first drainage structure is installed on the first filter structure, a second filter structure and a second cleaning structure are installed in the second filter chamber (16), the second cleaning structure corresponds to the second filter structure, and the first drainage structure corresponds to the second filter structure. A collecting box (29) is installed on the lower side of the shell (1), a driving structure and a second drainage structure are installed in the collecting box (29), the second drainage structure corresponds to the driving structure, the second drainage structure corresponds to the second filter structure and the first drainage structure, and the driving structure corresponds to the second cleaning structure.

2. A pre-filter device for floor heating according to claim 1, characterized in that: The exhaust structure comprises an exhaust pipe (4), the exhaust pipe (4) being connected to the first filter chamber (3), a plug (5) being installed at the end of the exhaust pipe (4), a plurality of springs (6) being fixed between the plug (5) and the housing (1), and the water inlet structure comprises a water inlet pipe (2), the water inlet pipe (2) being connected to the first filter chamber (3).

3. A pre-filter device for floor heating according to claim 2, characterized in that: The first cleaning structure comprises a first rotating frame (10) rotatably engaged in the first filter chamber (3), a first scraper (11) being fixed on the first rotating frame (10), a connecting shaft (12) being fixed on the first scraper (11), a plurality of fan blades (13) being fixed on the connecting shaft (12), the fan blades (13) being located in the water inlet pipe (2), a fixing frame (7) being fixed in the first filter chamber (3), the first filtering structure comprising a filter ball (8), the filter ball (8) being fixedly connected to the fixing frame (7), and a plurality of filter holes (9) being provided on the lower peripheral side of the filter ball (8).

4. A pre-filter device for floor heating according to claim 3, characterized in that: The first drainage structure includes a first water outlet pipe (14), the first water outlet pipe (14) is connected to the filter ball (8), an air bag (15) is installed at the top of the second filter chamber (16), the second filter structure includes a filter block (18) installed in the second filter chamber (16), the filter block (18) includes a filter plate (19), a water outlet (22) is opened at the bottom of the filter block (18), one end of the first water outlet pipe (14) is located in the water outlet (22), a first blocking plate (21) is fixed on the first water outlet pipe (14), a connecting pipe (20) is fixed on the filter plate (19), the end of the connecting pipe (20) is located in the connecting port (17), a second blocking plate (23) is fixed on the end of the connecting pipe (20), and the second blocking plate (23) corresponds to the connecting port (17).

5. The pre-filter device for floor heating according to claim 4, characterized in that: The second cleaning structure includes a blocking ring (25) rotatably engaged in the second filter chamber (16), a second rotating frame (28) rotatably engaged on the filter plate (19), a second scraper (26) fixed on the second rotating frame (28), the second scraper (26) in contact with the filter plate (19), the filter plate (19) is a conical structure, the top of the blocking ring (25) is an inclined structure, a first connecting rod (27) is installed between the second scraper (26) and the blocking ring (25), one end of the first connecting rod (27) is rotatably connected to the second scraper (26), and the other end of the first connecting rod (27) is rotatably connected to the blocking ring (25).

6. The pre-filter device for floor heating according to claim 4, characterized in that: The collecting box (29) is connected to the second filter chamber (16), a bottom plate (43) is installed at the bottom of the collecting box (29), a plurality of second connecting rods (42) are fixed between the bottom plate (43) and the blocking ring (25), and the second drainage structure includes a second water outlet pipe (24) that is slidably fitted in the collecting box (29), and the second water outlet pipe (24) is connected to the water outlet (22) and the first water outlet pipe (14).

7. The pre-filter device for floor heating according to claim 6, characterized in that: The driving structure includes a motor (30) fixed to the bottom of the collection box (29), a first gear (35) and a second gear (36) are rotatably engaged in the collection box (29), the first gear (35) is fixedly connected to the output end of the motor (30), the first gear (35) is meshed with the second gear (36), a sliding tube (38) is slidably engaged in the collection box (29), the sliding tube (38) is threadedly engaged with the second gear (36), the sliding tube (38) is slidably connected to the second water outlet pipe (24), and a reciprocating thread is installed on the sliding tube (38).

8. The pre-filter device for floor heating according to claim 7, characterized in that: The bottom of the collection box (29) is provided with a sliding groove (37), the sliding groove (37) corresponds to the sliding tube (38), a plurality of first electromagnets (40) are fixed in the sliding tube (38), a plurality of fixing rods (39) are fixed on the lower side of the collection box (29), a second electromagnet (41) is installed in the fixing rod (39), and both the first electromagnet (40) and the second electromagnet (41) correspond to the second water outlet pipe (24).

9. The pre-filter device for floor heating according to claim 7, characterized in that: The second gear (36) is fixedly connected to the bottom plate (43), the collection box (29) is rotatably connected to the bottom plate (43), and the bottom plate (43) is located on the upper side of the first gear (35) and the second gear (36).

10. The pre-filter device for floor heating according to claim 1, characterized in that: A discharge port (31) is provided on one side of the collection box (29), and grooves (32) and card slots (33) are provided on both sides of the discharge port (31). A box door (34) is installed in the discharge port (31), and the box door (34) corresponds to the groove (32) and the card slot (33).

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