Freezing-resistant pre-filter

Abstract

The invention relates to the field of filters, and provides a freezing-resistant pre-filter which comprises a filter body, a water inlet part and a water outlet part are fixedly connected to the filter body, a purification box is fixedly connected to the interior of the filter body, a purification assembly is arranged in the purification box, a component cavity is formed in the filter body, and a treatment box is fixedly connected to the inner wall of the component cavity. The top wall of the treatment cavity communicates with the top wall of the treatment box through a material inlet channel, and a freezing-resistant assembly is arranged in the component cavity and comprises a motor, a heat production disc, a stirring part, an L-shaped heat conduction copper plate, a second thermal expansion piece and a heat conduction rod; the filter body is made of cold-resistant polypropylene, the preparation steps of the cold-resistant polypropylene comprise primary mixing, secondary mixing, granulation and modification, and the primary mixing method comprises the step of adding a modified stabilizer, a cold resistance improving agent, random copolymer polypropylene resin and a filling agent into a stirring device for stirring to form a primary mixture. Water can be heated, icing is prevented, and the water temperature is improved.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to a freezing-resistant pre-filter. Background Art

[0002] The pre-filter is an important component of the water purification system. Its main function is to perform preliminary filtration on the tap water entering homes, restaurants and other places, intercepting large particles of impurities in the water, such as mud, rust, insect eggs, etc., thereby protecting the home's water-using equipment and ensuring water safety.

[0003] However, the current pre-filter does not have a heating function, and the water passing through the pre-filter is still cold, which is not conducive to users' washing in cold weather. In addition, when the weather is too cold, the water is easy to freeze in the filter, causing the filter to be blocked and unable to be used normally. Summary of the invention

[0004] In view of the above technical problems, the present invention aims to provide a freezing-resistant pre-filter. To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A freezing-resistant pre-filter comprises a filter body, a water inlet and a water outlet are fixedly connected to the filter body, a purification box is fixedly connected to the filter body, a purification assembly is arranged in the purification box, a component cavity is provided in the filter body, a processing box is fixedly connected to the inner wall of the component cavity, a processing cavity is provided on the processing box, a top wall of the processing cavity is connected to the top wall of the processing box through an inlet channel, the purification box is connected to the water inlet through a first water pipe, the purification box is connected to the processing box through a second water pipe, a first valve is fixedly connected to the second water pipe, the processing box is connected to the water outlet through a third water pipe, and a second valve is fixedly connected to the third water pipe;

[0006] An anti-freezing component is provided in the component cavity, and the anti-freezing component includes a motor, a heat generating disk, a stirring part, an L-shaped heat-conducting copper plate, a second heat-expanding member and a heat-conducting rod. The motor and the L-shaped heat-conducting copper plate are fixedly connected to the inner wall of the component cavity, the shaft is fixedly connected to the motor rotor, the heat generating disk and the stirring part are fixedly connected to the shaft, the lower end of the shaft extends into the processing cavity, all the stirring parts are located in the processing cavity, the heat generating disk is located outside the processing box, two or more neodymium magnets are fixedly connected to the bottom wall of the heat generating disk, and the bottom walls of adjacent neodymium magnets have opposite polarities, the horizontal section of the L-shaped heat-conducting copper plate is located below the heat generating disk, the second heat-expanding member is fixedly connected to the L-shaped heat-conducting copper plate, the heat-conducting rod is slidably connected to the L-shaped heat-conducting copper plate, and the movable ends of the heat-conducting rod and the second heat-expanding member are fixedly connected;

[0007] The filter body material includes cold-resistant polypropylene. The preparation steps of cold-resistant polypropylene include primary mixing, secondary mixing, granulation and modification. The primary mixing method includes adding a modified stabilizer, a cold resistance improver, a random copolymer polypropylene resin and a filler into a stirring device for stirring to form a primary mixture.

[0008] Preferably, a mineral addition component is provided in the component cavity.

[0009] Preferably, the mineral addition component includes a first thermal expansion member, a mineral-containing object, a guide insulation plate, a first elastic member, a movable insulation plate, an extended insulation plate, a first trapezoidal body and a second trapezoidal body, the first thermal expansion member is fixed to the movable insulation plate, the first thermal expansion member and the L-shaped thermal conductive copper plate are abutted against each other, the mineral-containing object is fixed to the movable end of the first thermal expansion member, the guide insulation plate is fixed to the L-shaped thermal conductive copper plate, the movable insulation plate is slidably connected to the guide insulation plate, the extended insulation plate is fixed to the movable insulation plate, the extended insulation plate is connected to the movable insulation plate through the first elastic member and the L-shaped thermal conductive copper plate, the first trapezoidal body is fixed to the mineral-containing object, and the second trapezoidal body is fixed to the movable end of the second thermal expansion member.

[0010] Preferably, a temperature sensor is fixedly connected to the inner wall of the component cavity, and the temperature sensor and the L-shaped heat-conducting copper plate are against each other.

[0011] Preferably, a disinfection and sterilization assembly is provided in the component cavity.

[0012] Preferably, a transparent glass window is fixedly connected to the processing box, and the disinfection and sterilization component includes a first bevel gear, a toothed ring, an ultraviolet lamp, a second bevel gear, a spur gear, a slip ring, a permanent magnet, a second elastic member, a fixed plate and an electromagnet. The first bevel gear is fixedly connected to the shaft, the toothed ring is rotatably connected to the slip ring, the ultraviolet lamp is embedded in the inner wall of the toothed ring, the second bevel gear is fixedly connected to the spur gear, the spur gear is rotatably connected to the slip ring, the slip ring is slidably connected to the outer wall of the processing box, the slip ring is connected to the fixed plate through the second elastic member, the permanent magnet is embedded in the slip ring, and the electromagnet is fixed to the fixed plate.

[0013] Preferably, the spur gear is rotatably connected to the slip ring via a gear shaft.

[0014] Preferably, the ultraviolet lamp and the electromagnet are electrically connected in the same series circuit.

[0015] Preferably, the cold resistance improving agent includes a terpolymer, and the filler includes glass fiber.

[0016] Preferably, a processing module is provided in the filter body.

[0017] The present invention has the following beneficial effects:

[0018] According to the actual needs of users, the present invention can heat the water after it is purified in the purification box 5, thereby providing improved water temperature for subsequent water use by users, and can also prevent water from freezing in the filter in cold weather, thereby achieving an anti-freezing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a freezing-resistant pre-filter of the present invention;

[0021] Figure 2 This is a front view of a freezing-resistant pre-filter of the present invention;

[0022] Figure 3 The present invention Figure 2 Schematic diagram of the internal structure of the filter body;

[0023] Figure 4 The present invention Figure 3 The enlarged view of point A in the middle;

[0024] Figure 5 The present invention Figure 4 The enlarged view of point B in the middle;

[0025] Figure 6 The present invention Figure 4 Left view of the L-shaped thermal conductive copper plate;

[0026] Figure 7 The present invention Figure 4 Structural diagram of the middle slip ring;

[0027] Figure 8 The present invention Figure 6 A schematic diagram of the structure of the first trapezoidal body and the second trapezoidal body;

[0028] Fig. 9 The present invention Figure 4 Schematic diagram of the structure of the Chinese hot plate.

[0029] Figure numerals: 1, filter body; 2, water inlet; 3, water outlet; 4, first water pipe; 5, purification box; 6, second water pipe; 7, component chamber; 8, third water pipe; 9, motor; 10, heat generating disk; 11, neodymium magnet; 12, shaft; 13, treatment box; 14, treatment chamber; 15, inlet channel; 16, first valve; 17, second valve; 18, stirring part; 19, first bevel gear; 20, L-shaped heat-conducting copper plate; 21, temperature sensor; 22, first thermal expansion member; 23, mineral-containing object ; 24. Guide insulation plate; 25. First elastic member; 26. Movable insulation plate; 261. Extended insulation plate; 27. First trapezoidal body; 28. Second thermal expansion member; 29. ​​Heat-conducting rod; 30. Second trapezoidal body; 31. Toothed ring; 32. Ultraviolet lamp; 33. Second bevel gear; 34. Spur gear; 35. Gear shaft; 36. Slip ring; 37. Permanent magnet; 38. Second elastic member; 39. Fixed plate; 40. Electromagnet; 41. Transparent glass window; 42. Microbial filter plate; 43. Water level sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1-4As shown in , 6 and 9, a freezing-resistant pre-filter comprises a filter body 1, a water inlet 2 and a water outlet 3 are fixedly connected to the filter body 1, a purification box 5 is fixedly connected in the filter body 1, a purification assembly is arranged in the purification box 5, a component cavity 7 is provided in the filter body 1, a processing box 13 is fixedly connected to the inner wall of the component cavity 7, a processing cavity 14 is provided in the processing box 13, the top wall of the processing cavity 14 is connected with the top wall of the processing box 13 through an inlet channel 15, the purification box 5 is connected with the water inlet 2 through a first water pipe 4, the purification box 5 is connected with the processing box 13 through a second water pipe 6, a first valve 16 is fixedly connected to the second water pipe 6, the processing box 13 is connected with the water outlet 3 through a third water pipe 8, and a second valve 17 is fixedly connected to the third water pipe 8;

[0034] The component cavity 7 is provided with an anti-freezing component, which includes a motor 9, a heat generating disk 10, a stirring portion 18, an L-shaped heat conducting copper plate 20, a second heat expansion member 28 and a heat conducting rod 29. The motor 9 and the L-shaped heat conducting copper plate 20 are fixed to the inner wall of the component cavity 7, the shaft 12 is fixed to the rotor of the motor 9, the heat generating disk 10 and the stirring portion 18 are fixed to the shaft 12, and the lower end of the shaft 12 extends into the processing chamber 14. All stirring portions 1 8 is located in the processing chamber 14, the heat generating disk 10 is located outside the processing box 13, the bottom wall of the heat generating disk 10 is fixedly connected to two or more neodymium magnets 11, the bottom walls of adjacent neodymium magnets 11 have opposite polarities, the horizontal section of the L-shaped heat conducting copper plate 20 is located below the heat generating disk 10, the second heat expansion member 28 is fixedly connected to the L-shaped heat conducting copper plate 20, the heat conducting rod 29 is slidably connected to the L-shaped heat conducting copper plate 20, and the movable end of the heat conducting rod 29 and the second heat expansion member 28 is fixedly connected;

[0035] The filter body 1 is made of cold-resistant polypropylene. The preparation steps of cold-resistant polypropylene include primary mixing, secondary mixing, granulation and modification. The primary mixing method includes adding a modified stabilizer, a cold resistance improver, a random copolymer polypropylene resin and a filler into a stirring device for stirring to form a primary mixture.

[0036] Secondary mixing is to mix the primary mixture with other functional enhancers to obtain a secondary mixture.

[0037] Granulation is the process of melt-extruding the secondary mixture using a twin-screw extruder to form primary polypropylene material.

[0038] The modification is to place the primary polypropylene material into a silica sol aqueous solution for soaking and modification to form cold-resistant polypropylene.

[0039] The obtained cold-resistant polypropylene is used as the material of the filter body 1, which can effectively resist the erosion of cold and freezing weather and effectively protect the filter.

[0040] like Figure 4 , 6As shown in FIG. 8 , according to an optional embodiment of the present invention, a mineral addition component is provided in the component cavity 7 .

[0041] like Figure 4 , 6 As shown in 8, according to an optional embodiment of the present invention, the mineral adding component includes a first thermal expansion member 22, a mineral-containing object 23, a guide insulation plate 24, a first elastic member 25, a movable insulation plate 26, an extended insulation plate 261, a first trapezoidal body 27 and a second trapezoidal body 30, the first thermal expansion member 22 is fixed to the movable insulation plate 26, the first thermal expansion member 22 and the L-shaped thermal conductive copper plate 20 are abutted, the mineral-containing object 23 is fixed to the movable end of the first thermal expansion member 22, the guide insulation plate 24 is fixed to the L-shaped thermal conductive copper plate 20, the movable insulation plate 26 is slidably connected to the guide insulation plate 24, the extended insulation plate 261 is fixed to the movable insulation plate 26, the extended insulation plate 261 is connected to the L-shaped thermal conductive copper plate 20 through the first elastic member 25, the first trapezoidal body 27 is fixed to the mineral-containing object 23, and the second trapezoidal body 30 is fixed to the movable end of the second thermal expansion member 28.

[0042] The mineral-containing object 23 may be a processed natural mineral rock. The second trapezoidal body 30 may move upward or downward to push the first trapezoidal body 27 to move rightward.

[0043] like Figure 4 As shown, according to an optional embodiment of the present invention, a temperature sensor 21 is fixedly connected to the inner wall of the component cavity 7, and the temperature sensor 21 abuts against the L-shaped thermal conductive copper plate 20. The temperature sensor 21 can be a thermal resistance temperature sensor. When the temperature changes, the resistance value of the metal will change, and the temperature can be determined by measuring the change in the resistance value.

[0044] like Figure 4 , 5 As shown in FIG. 7 , according to an optional embodiment of the present invention, a disinfection and sterilization component is provided in the component cavity 7 .

[0045] like Figure 4 , 5As shown in Figure 7, according to an optional embodiment of the present invention, a transparent glass window 41 is fixedly connected to the processing box 13, and the disinfection and sterilization component includes a first bevel gear 19, a toothed ring 31, an ultraviolet lamp 32, a second bevel gear 33, a spur gear 34, a slip ring 36, a permanent magnet 37, a second elastic member 38, a fixed plate 39 and an electromagnet 40. The first bevel gear 19 is fixedly connected to the shaft body 12, the toothed ring 31 is rotatably connected to the slip ring 36, the ultraviolet lamp 32 is embedded in the inner wall of the toothed ring 31, the second bevel gear 33 is fixedly connected to the spur gear 34, the spur gear 34 is rotatably connected to the slip ring 36, the slip ring 36 is slidably connected to the outer wall of the processing box 13, the slip ring 36 is connected to the fixed plate 39 through the second elastic member 38, the permanent magnet 37 is embedded in the slip ring 36, and the electromagnet 40 is fixedly connected to the fixed plate 39.

[0046] The ultraviolet lamp 32 can emit ultraviolet rays in the UVC band, which has the best sterilization effect. UVC ultraviolet rays can penetrate the bacterial cell wall and cell membrane, destroy the DNA and RNA structure of the bacteria, and the energy of ultraviolet rays is enough to break the DNA chain and form pyrimidine dimers, which hinder the replication of DNA and the transcription of RNA, thereby inhibiting the reproduction of bacteria.

[0047] like Figure 5 As shown, according to an optional embodiment of the present invention, the spur gear 34 is rotatably connected to the slip ring 36 via a gear shaft 35 .

[0048] According to an optional embodiment of the present invention, the ultraviolet lamp 32 and the electromagnet 40 are electrically connected in the same series circuit, that is, after the series circuit is powered on, the ultraviolet lamp 32 and the electromagnet 40 are started at the same time.

[0049] According to an optional embodiment of the present invention, the cold resistance improver includes a terpolymer, and the filler includes glass fiber. Terpolymer polypropylene is a product made by copolymerizing propylene monomer and two other monomers under the action of a catalyst. It has stable physical and chemical properties and improved comprehensive performance. It has the advantages of high cold resistance, high rigidity, impact resistance, acid and alkali resistance, oxidation resistance, and aging resistance. The addition of glass fiber can significantly improve the tensile strength and flexural modulus of polypropylene, making the material as a whole harder and tougher.

[0050] According to an optional embodiment of the present invention, a processing module is provided in the filter body 1. The processing module is a module having data processing functions and electrical component control functions.

[0051] Implementation process:

[0052] The water inlet 2 is connected to the municipal water pipe, and the water outlet 3 is connected to the domestic water pipe. The tap water enters the purification box 5 from the water inlet 2 and the first water pipe 4. The water purification component in the purification box 5 purifies the tap water, removes large particles and tiny impurities in the water to become purified water, and opens the first valve 16 to allow the purified water to enter the processing chamber 14. The second valve 17 is in a closed state. When the water level sensor 43 detects that the water level in the processing chamber 14 reaches a preset height, the processing module controls the first valve 16 to close to prevent water from overflowing from the inlet channel 15, and turns on the motor 9. The rotor of the motor 9 drives the shaft 12, the heat generating disk 10, the neodymium magnet 11, the first bevel gear 19, and the stirring part 18 to rotate. The stirring part 18 stirs the water to prevent the water from freezing.

[0053] The filter can choose three working modes: mineral adding mode, heating mode, and heating and mineral adding mode.

[0054] Adding mineral mode: the rotor of the motor 9 is at a low speed, and all the neodymium magnets 11 continuously pass over the horizontal section of the L-shaped thermally conductive copper plate 20, thereby generating eddy currents in the L-shaped thermally conductive copper plate 20, causing the L-shaped thermally conductive copper plate 20 to heat up. The temperature sensor 21 can detect the heating temperature of the L-shaped thermally conductive copper plate 20, so that the processing module adjusts the speed of the motor 9 to maintain the temperature of the L-shaped thermally conductive copper plate 20 within a first preset temperature range. The heat of the L-shaped thermally conductive copper plate 20 is transferred to the first thermal expansion member 22, the second thermal expansion member 28 and the thermally conductive rod 29. The first thermal expansion member 22 and the second thermal expansion member 28 expand and elongate due to the heat, so that the mineral-containing object 23 is inserted into the water in the processing chamber 14, and the minerals contained in the mineral-containing object 23 will dissolve in the water. The stirring of the stirring part 18 can increase the amount of minerals dissolved. The second trapezoidal body 30 does not offset the first trapezoidal body 27, and the second thermal expansion member 28 also expands and elongates, but the elongation is not enough to insert the thermally conductive rod 29 into the water in the processing chamber 14.

[0055] Adding minerals can improve the drinking taste of water and supplement trace elements for the human body.

[0056] Heating mode: the rotor of the motor 9 is at a medium speed, all the neodymium magnets 11 rotate faster, the temperature of the L-shaped heat-conducting copper plate 20 increases, the processing module maintains the temperature of the L-shaped heat-conducting copper plate 20 within a second preset temperature range, the expansion and elongation of the second thermal expansion member 28 increases, so that the second trapezoidal body 30 pushes the first trapezoidal body 27 to move right, so that the movable insulation plate 26, the extended insulation plate 261, the first thermal expansion member 22, and the mineral-containing object 23 overcome the elastic force of the first elastic member 25 and move right along the bottom wall of the guide insulation plate 24, the first thermal expansion member 22 is separated from and offset from the L-shaped heat-conducting copper plate 20, the first thermal expansion member 22 does not expand and elongate, the mineral-containing object 23 is not inserted into the water in the processing chamber 14, the downward movement of the heat-conducting rod 29 increases, the heat-conducting rod 29 is inserted into the water in the processing chamber 14, the heat-conducting rod 29 heats the water to turn the cold water into warm water, and at the same time can prevent the water from freezing, thereby achieving the anti-freezing performance of the filter.

[0057] Heated water can be used for comfortable washing in cold weather and can also reduce the time spent boiling water.

[0058] Heating and mineral adding mode: the rotor of the motor 9 is at a high speed, and the rotation of all the neodymium magnets 11 is accelerated again, and the temperature of the L-shaped heat-conducting copper plate 20 is increased again. The processing module maintains the temperature of the L-shaped heat-conducting copper plate 20 within the third preset temperature range, and the expansion and elongation of the second thermal expansion member 28 increases again. The second trapezoidal body 30 moves down to below the first trapezoidal body 27, and the second trapezoidal body 30 does not abut against the first trapezoidal body 27, so that the first thermal expansion member 22 moves to the left and resets under the elastic force of the first elastic member 25 to abut against the L-shaped heat-conducting copper plate 20 again. The first thermal expansion member 22 expands and elongates due to the heat, and the mineral-containing object 23 and the heat-conducting rod 29 are both inserted into the water in the processing chamber 14 through the inlet channel 15 to heat the water and add minerals.

[0059] The maximum value of the first preset temperature range is smaller than the minimum value of the second preset temperature range, and the maximum value of the second preset temperature range is smaller than the minimum value of the third preset temperature range.

[0060] The metabolism of the microorganisms in the microbial filter plate 42 decomposes the organic matter in the water, thereby achieving the purpose of purifying sewage. The microorganisms can absorb sugar, protein, fat, starch and other low molecular compounds from the sewage and convert them into harmless substances through metabolism. When the heat-conducting rod 29 is inserted into the water, the heat-conducting rod 29 will contact the microbial filter plate 42, thereby increasing the temperature of the microbial filter plate 42. The increase in temperature can increase the activity of the microbial enzyme, thereby promoting the metabolic activity of the microorganisms, accelerating the decomposition of organic matter by the microorganisms, and improving the water purification capacity.

[0061] When performing the above three modes, the disinfection and sterilization function of the filter can also be turned on, that is, the series circuit where the ultraviolet lamp 32 and the electromagnet 40 are located is connected, so that the power supply simultaneously powers the ultraviolet lamp 32 and the electromagnet 40, and the ultraviolet lamp 32 emits ultraviolet light through the transparent glass window 41 to disinfect and sterilize the water in the processing chamber 14, and the electromagnet 40 is energized to generate a magnetic repulsive force, so that the permanent magnet 37 moves right, driving the slip ring 36, the toothed ring 31, the ultraviolet lamp 32, the spur gear 34, and the second bevel gear 33 to move right, and the second bevel gear 33 is meshed with the first bevel gear 19, and the first bevel gear 19 drives the second bevel gear 33, the spur gear 34, the toothed ring 31, and the ultraviolet lamp 32 to rotate, and the ultraviolet lamp 32 can disinfect and sterilize the water in the processing chamber 14 from multiple angles, thereby improving the quality of disinfection and sterilization.

[0062] By opening the second valve 17 , the water in the treatment chamber 14 can flow into the household water pipe through the third water pipe 8 and the water outlet 3 for use by the user.

[0063] The present invention has three working modes. According to the actual needs of the user, after the water is purified in the purification box 5, it can be heated, or minerals can be added, or both heated and minerals can be added, so as to provide improved water temperature for the user's subsequent water use, and prevent the water from freezing in the filter in cold weather, thereby achieving the anti-freezing function, improving the taste of drinking water and supplementing the trace elements of the human body. When the three modes are turned on, the ultraviolet lamp 32 can disinfect and sterilize the water from multiple angles, and cooperate with the microbial water purification function of the microbial filter plate 42 to further improve the quality of purified water.

[0064] The components, modules, mechanisms and devices not described in detail in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A freezing-resistant pre-filter, characterized in that: The filter comprises a filter body (1), a water inlet (2) and a water outlet (3) are fixedly connected to the filter body (1), a purification box (5) is fixedly connected inside the filter body (1), a purification assembly is arranged inside the purification box (5), a component cavity (7) is provided inside the filter body (1), a processing box (13) is fixedly connected to the inner wall of the component cavity (7), a processing cavity (14) is provided on the processing box (13), the top wall of the processing cavity (14) is connected to the top wall of the processing box (13) through an inlet channel (15), the purification box (5) is connected to the water inlet (2) through a first water pipe (4), the purification box (5) is connected to the processing box (13) through a second water pipe (6), a first valve (16) is fixedly connected to the second water pipe (6), the processing box (13) is connected to the water outlet (3) through a third water pipe (8), and a second valve (17) is fixedly connected to the third water pipe (8); An anti-freezing component is provided in the component cavity (7), and the anti-freezing component includes a motor (9), a heat generating disk (10), a stirring portion (18), an L-shaped heat conducting copper plate (20), a second heat expansion member (28) and a heat conducting rod (29). The motor (9) and the L-shaped heat conducting copper plate (20) are both fixedly connected to the inner wall of the component cavity (7), the shaft (12) is fixedly connected to the rotor of the motor (9), the heat generating disk (10) and the stirring portion (18) are both fixedly connected to the shaft (12), and the lower end of the shaft (12) extends into the processing cavity (14). All stirring rods (29) are connected to the shaft (12). The heat generating plate (10) is located in the processing chamber (14), the heat generating plate (10) is located outside the processing box (13), the bottom wall of the heat generating plate (10) is fixedly connected with two or more neodymium magnets (11), the bottom walls of adjacent neodymium magnets (11) have opposite polarities, the horizontal section of the L-shaped heat conducting copper plate (20) is located below the heat generating plate (10), the second heat expansion member (28) is fixedly connected to the L-shaped heat conducting copper plate (20), the heat conducting rod (29) is slidably connected to the L-shaped heat conducting copper plate (20), and the heat conducting rod (29) is fixedly connected to the movable end of the second heat expansion member (28); The material of the filter body (1) includes cold-resistant polypropylene. The preparation steps of the cold-resistant polypropylene include primary mixing, secondary mixing, granulation and modification. The primary mixing method includes adding a modified stabilizer, a cold resistance improving agent, a random copolymer polypropylene resin and a filler into a stirring device and stirring to form a primary mixture.

2. The anti-freezing pre-filter according to claim 1, characterized in that: A mineral addition component is arranged in the component cavity (7).

3. The anti-freezing pre-filter according to claim 2, characterized in that: The mineral addition assembly comprises a first thermal expansion member (22), a mineral-containing object (23), a guide insulation plate (24), a first elastic member (25), a movable insulation plate (26), an extended insulation plate (261), a first trapezoidal body (27) and a second trapezoidal body (30), wherein the first thermal expansion member (22) is fixedly connected to the movable insulation plate (26), the first thermal expansion member (22) and the L-shaped heat-conducting copper plate (20) are abutted against each other, and the mineral-containing object (23) is fixedly connected to the first thermal expansion member (22). On the movable end, the guide insulation plate (24) is fixedly connected to the L-shaped heat-conducting copper plate (20), the movable insulation plate (26) is slidably connected to the guide insulation plate (24), the extension insulation plate (261) is fixedly connected to the movable insulation plate (26), the extension insulation plate (261) is connected to the L-shaped heat-conducting copper plate (20) through the first elastic member (25), the first trapezoidal body (27) is fixedly connected to the mineral-containing object (23), and the second trapezoidal body (30) is fixedly connected to the movable end of the second thermal expansion member (28).

4. The anti-freezing pre-filter according to claim 3, characterized in that: A temperature sensor (21) is fixedly connected to the inner wall of the component cavity (7), and the temperature sensor (21) and the L-shaped heat-conducting copper plate (20) are in contact with each other.

5. A freeze-resistant pre-filter according to any one of claims 1 to 4, characterized in that: A disinfection and sterilization component is arranged in the component cavity (7).

6. The anti-freezing pre-filter according to claim 5, characterized in that: The processing box (13) is fixedly connected with a transparent glass window (41). The disinfection and sterilization assembly comprises a first bevel gear (19), a toothed ring (31), an ultraviolet lamp (32), a second bevel gear (33), a spur gear (34), a slip ring (36), a permanent magnet (37), a second elastic member (38), a fixing plate (39) and an electromagnet (40). The first bevel gear (19) is fixedly connected to the shaft (12), the toothed ring (31) is rotatably connected to the slip ring (36), and the second elastic member (38) is rotatably connected to the slip ring (39). The ultraviolet lamp (32) is embedded in the inner wall of the toothed ring (31), the second bevel gear (33) is fixedly connected to the spur gear (34), the spur gear (34) is rotatably connected to the slip ring (36), the slip ring (36) is slidably connected to the outer wall of the processing box (13), the slip ring (36) is connected to the fixing plate (39) through a second elastic member (38), the permanent magnet (37) is embedded in the slip ring (36), and the electromagnet (40) is fixedly connected to the fixing plate (39).

7. The anti-freezing pre-filter according to claim 6, characterized in that: The spur gear (34) is rotatably connected to the slip ring (36) via a gear shaft (35).

8. The anti-freezing pre-filter according to claim 7, characterized in that: The ultraviolet lamp (32) and the electromagnet (40) are electrically connected in the same series circuit.

9. The anti-freezing pre-filter according to claim 8, characterized in that: The cold resistance improving agent includes a terpolymer, and the filler includes glass fiber.

10. The anti-freezing pre-filter according to claim 9, characterized in that: A processing module is arranged inside the filter body (1).

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