PVDF (Polyvinylidene Fluoride) plastic heater control valve

Abstract

The utility model relates to the technical field of heater control valves, in particular to a PVDF (Polyvinylidene Fluoride) plastic heater control valve, which comprises a valve body, the lower end of the valve body is communicated and fixedly connected with a water inlet, one side of the valve body is communicated and fixedly connected with a water outlet, the middle of the valve body is fixedly connected with an isolation seat and a valve seat, and the isolation seat is positioned between the valve seat and the water inlet. The valve seat is located between the isolation seat and the water outlet, a mounting seat is fixedly connected to the position, located above the isolation seat, of one side of the valve body, a filter cartridge is in threaded connection with the mounting seat, one end of the filter cartridge is obliquely inserted into the valve body, a connecting opening is formed in the isolation seat in a penetrating mode, one end of the filter cartridge is in butt joint with the connecting opening, and the other end of the filter cartridge is fixedly connected with a knob; a valve rod assembly is arranged at the top of the valve body; the valve seat and the water inlet are isolated through the isolation seat to form two spaces, water enters the filter cartridge through the water inlet and the connecting port, the filter cartridge removes impurities in the water, the accumulation speed of the impurities in the water is reduced, the cleaning frequency of heating equipment is reduced, and the filter cartridge is convenient to replace or clean.

Description

Technical Field

[0001] This utility model relates to the field of heating control valves, specifically a PVDF plastic heating control valve. Background Technology

[0002] PVDF plastic is a highly non-reactive thermoplastic fluoropolymer plastic with excellent properties such as anti-aging, chemical resistance, weather resistance, and ultraviolet radiation resistance. Heating control valves are valves that control the on and off of heating. Heating control valves made of PVDF plastic have good heat resistance.

[0003] Existing PVDF plastic heating control valves, such as the angle heating valve proposed in patent application number "CN202322654140.8", include a valve body. A connecting pipe with one end outside the valve body and the other end inside the valve body is connected to a connecting element at one end of the movable, closed connecting pipe. The connecting element includes a valve stem with a valve cap engaged. Both sides of one end of the valve stem are integrally connected with protrusions. The valve cap has a groove for the valve stem to engage, and an elongated groove on the inner wall of the groove that fits with the protrusions. This invention has the advantage of allowing for easy replacement of the valve cap.

[0004] However, existing technologies have shortcomings. After a period of use, impurities will circulate inside the heating system, which will reduce the heating effect and increase the corrosion rate of the heating equipment. Existing heating valves do not have a filtering function, so the heating equipment needs to be cleaned regularly, which is frequent and labor-intensive. Therefore, a PVDF plastic heating control valve is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a PVDF plastic heating control valve to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A PVDF plastic heating control valve includes a valve body. An inlet is fixedly connected to the lower end of the valve body, and an outlet is fixedly connected to one side of the valve body. An isolation seat and a valve seat are fixedly connected to the middle of the valve body. The isolation seat is located between the valve seat and the inlet, and the valve seat is located between the isolation seat and the outlet. A mounting seat is fixedly connected to one side of the valve body above the isolation seat. A filter cartridge is threaded onto the mounting seat. One end of the filter cartridge is inclinedly inserted into the valve body. A connection port is provided through the isolation seat. One end of the filter cartridge is connected to the connection port, and a knob is fixedly connected to the other end. A valve stem assembly is provided at the top of the valve body. A valve port is provided on the valve seat, and the lower end of the valve stem assembly mates with the valve port.

[0008] Preferably, the isolation seat is shaped like an inclined "L", with one end of the filter cartridge inside the valve body connected to the upper end of the isolation seat, the connection port coaxially connected to the filter cartridge, the diameter of the connection port being smaller than the inner diameter of the filter cartridge, and the knob located outside the mounting base.

[0009] Preferably, the valve stem assembly includes a fixing ring, which is fixed to the inner wall of the valve body. The outlet is located between the fixing ring and the valve seat. A sealing block is snapped onto the top of the inner wall of the valve seat. The sealing block abuts against the fixing ring. A valve stem is threadedly connected to the middle of the sealing block. The valve stem is coaxial with the valve body. A plug is fixed to the lower end of the valve stem. The plug is inserted into the valve port.

[0010] Preferably, a top seat is fixedly connected to the upper end of the valve body, a valve cover is rotatably mounted on the top seat, a retaining frame is fixedly connected inside the valve cover, a drive block is fixedly connected to the top side wall of the valve stem, the retaining frame and the drive block are inserted into each other, and the end of the retaining frame abuts against the sealing block.

[0011] Preferably, a connecting ring is fixed to the inner wall of the valve cover, a recessed ring is provided on the side wall of the top seat, the connecting ring is rotatably installed in the recessed ring, and multiple sets of protrusions are fixed to the outer wall of the valve cover.

[0012] Preferably, a fastening plate is rotatably installed on the side wall of the water inlet, and a spherical block for engaging with an external connecting pipe is fixed to one end of the fastening plate. A retaining ring is sleeved on the outside of the water inlet and slidably connected, with the fastening plate located inside the retaining ring.

[0013] The beneficial effects of this utility model are:

[0014] This utility model uses an isolation seat to isolate the valve seat and the water inlet, forming two spaces. Water enters the valve body through the water inlet, is located on one side of the isolation seat, and enters the filter cartridge through the connection port. The filter cartridge passes through the filter cartridge and contacts the valve seat. The filter cartridge filters the water, removes impurities from the water, reduces the accumulation rate of impurities in the water, and reduces the frequency of cleaning the heating equipment. The filter cartridge is installed on the mounting base with a knob thread, which is convenient for disassembly and assembly, and facilitates the replacement or cleaning of the filter cartridge. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 3This is a schematic diagram of the top structure of the valve body of this utility model;

[0019] Figure 4 This is a schematic diagram of the valve cover structure of this utility model;

[0020] The attached figures are labeled as follows:

[0021] 1. Valve body; 2. Inlet; 3. Outlet; 4. Mounting base; 5. Knob; 6. Filter cartridge; 8. Valve cover; 9. Protrusion; 10. Isolation seat; 11. Connection port; 12. Valve seat; 13. Valve port; 14. Retaining ring; 15. Sealing block; 16. Valve stem; 17. Plug; 18. Drive block; 19. Frame; 20. Connecting ring; 21. Top seat; 22. Fastening plate; 23. Spherical block; 24. Snap ring; 25. Recessed ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] A PVDF plastic heating control valve, such as Figures 1-4 As shown, the valve body includes a valve body 1. The lower end of the valve body 1 is connected to and fixedly connected to an inlet 2. The side of the valve body 1 is connected to and fixedly connected to an outlet 3. An isolation seat 10 and a valve seat 12 are fixedly connected in the middle of the valve body 1. The isolation seat 10 is located between the valve seat 12 and the inlet 2. The valve seat 12 is located between the isolation seat 10 and the outlet 3. A mounting seat 4 is fixedly connected to one side of the valve body 1 above the isolation seat 10. A filter cartridge 6 is threaded onto the mounting seat 4. One end of the filter cartridge 6 is inserted into the valve body 1 at an angle. A connection port 11 is opened through the isolation seat 10. One end of the filter cartridge 6 is connected to the connection port 11, and the other end is fixedly connected to a knob 5. A valve stem 16 assembly is provided on the top of the valve body 1. A valve port 13 is opened on the valve seat 12. The lower end of the valve stem 16 assembly is engaged with the valve port 13.

[0024] The valve seat 12 and the inlet 2 are separated by the isolation seat 10 to form two spaces. Water enters the valve body 1 through the inlet 2 and is located on one side of the isolation seat 10. It enters the filter cartridge 6 through the connection port 11, passes through the filter cartridge 6 and contacts the valve seat 12. The filter cartridge 6 filters the water, removes impurities from the water, reduces the accumulation rate of impurities in the water, and reduces the frequency of cleaning the heating equipment. The filter cartridge 6 is screwed onto the mounting base 4 by the knob 5, which is convenient for disassembly and assembly, and facilitates the replacement or cleaning of the filter cartridge 6.

[0025] The filter cartridge 6 is installed at an angle, allowing water to enter the interior of the filter cartridge 6. Combined with the connection port 11 of the isolation seat 10, the water flow must pass through the filter cartridge 6. The filter cartridge 6 can be a plastic or stainless steel tube with a fine mesh surface. Filter paper or filter membrane can also be laid inside the filter cartridge 6. Turning the knob 5 can pull the filter cartridge 6 out from the mounting seat 4, allowing for cleaning or replacement of the filter cartridge 6. This drives the valve stem 16 assembly to operate. The bottom of the valve stem 16 assembly is sealed with the valve port 13 to control the on / off state of the heating control valve.

[0026] like Figure 2 As shown, the isolation seat 10 is shaped as an inclined "L". The filter cartridge 6 is located inside the valve body 1 and is connected to the upper end of the isolation seat 10. The connection port 11 is coaxially connected to the filter cartridge 6. The diameter of the connection port 11 is smaller than the inner diameter of the filter cartridge 6. The knob 5 is located outside the mounting base 4.

[0027] One end of the isolation seat 10 is better sealed and connected to one end of the filter cartridge 6, so that the water flow channel must enter the filter cartridge 6 through the connection port 11.

[0028] like Figure 2 As shown, the valve stem 16 assembly includes a fixing ring 14, which is fixed to the inner wall of the valve body 1. The outlet 3 is located between the fixing ring 14 and the valve seat 12. A sealing block 15 is snapped onto the top of the inner wall of the valve seat 12. The sealing block 15 abuts against the fixing ring 14. The valve stem 16 is threadedly connected to the middle of the sealing block 15. The valve stem 16 is coaxial with the valve body 1. A plug 17 is fixed to the lower end of the valve stem 16. The plug 17 is inserted into the valve port 13.

[0029] When the valve stem 16 is rotated, the sealing block 15 is engaged and sealed to the inner wall of the valve body 1, so the sealing block 15 cannot rotate. Only the valve stem 16 rotates. The rotation of the valve stem 16 will cause it to rise and fall, thereby controlling the rise and fall of the plug 17. The plug 17 can seal the valve port 13, or there can be a gap between it and the inner wall of the valve port 13, thereby controlling the water flow.

[0030] like Figures 2-4 As shown, a top seat 21 is fixedly connected to the upper end of the valve body 1, and a valve cover 8 is rotatably installed on the top seat 21. A retaining frame 19 is fixedly connected inside the valve cover 8, and a driving block 18 is fixedly connected to the top side wall of the valve stem 16. The retaining frame 19 and the driving block 18 are inserted and engaged, and the end of the retaining frame 19 abuts against the sealing block 15.

[0031] The valve cover 8 is rotatably installed on the valve body 1. When installing the valve cover 8, the retaining frame 19 is inserted into the drive block 18, and then the valve cover 8 is pressed and installed on the top seat 21. When the valve cover 8 is rotated, the valve cover 8 drives the valve stem 16 to rotate through the retaining frame 19 and the drive block 18. Since the retaining frame 19 is long and one end contacts the sealing retaining block 15, the drive block 18 is always inside the retaining frame 19 when the valve stem 16 rotates and rises.

[0032] like Figures 2-4 As shown, a connecting ring 20 is fixed to the inner wall of the valve cover 8, and a recessed ring 25 is provided on the side wall of the top seat 21. The connecting ring 20 is rotatably installed in the recessed ring 25, and multiple sets of protrusions 9 are fixed to the outer wall of the valve cover 8.

[0033] The valve cover 8 is rotated and installed on the concave ring 25 of the top seat 21 via the connecting ring 20. The surface of the connecting ring 20 is rounded and has a certain deformation capacity, so that the valve cover 8 can be pressed onto the top seat 21. The valve cover 8 can be removed by pulling the valve cover 8 with force. The protrusion 9 increases the friction force for screwing the valve cover 8.

[0034] like Figures 1-2 As shown, a fastening plate 22 is rotatably installed on the side wall of the water inlet 2. A spherical block 23 for engaging with an external connecting pipe is fixed to one end of the fastening plate 22. A retaining ring 24 is sleeved on the outside of the water inlet 2 and slidably connected, with the fastening plate 22 located inside the retaining ring 24.

[0035] When the water flow rate of the heating control valve is relatively low, the pressure at the inlet 2 is relatively high, which can easily cause the inlet 2 and the external connecting pipe to detach. A rotatable fastening plate 22 is added to the outer wall of the inlet 2. After the external connecting pipe is installed with the inlet 2, the fastening plate 22 is rotated to engage the spherical block 23 with the side wall of the external connecting pipe, which helps to pull the external connecting plate and reduces the possibility of the external connecting pipe detaching. Then, the retaining ring 24 is slid and fitted onto the outside of the fastening plate 22. The retaining ring 24 is tightened to prevent the fastening plate 22 from rotating.

[0036] The working principle of the PVDF plastic heating control valve provided by this utility model is as follows:

[0037] The valve seat 12 and the inlet 2 are separated by the isolation seat 10 to form two spaces. Water enters the valve body 1 through the inlet 2 and is located on one side of the isolation seat 10. It enters the filter cartridge 6 through the connection port 11, passes through the filter cartridge 6 and contacts the valve seat 12. The filter cartridge 6 filters the water, removes impurities from the water, reduces the accumulation rate of impurities in the water, and reduces the frequency of cleaning the heating equipment. The filter cartridge 6 is screwed onto the mounting base 4 by the knob 5, which is convenient for disassembly and assembly, and facilitates the replacement or cleaning of the filter cartridge 6.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A PVDF plastic heating control valve, comprising a valve body (1), characterized in that, The lower end of the valve body (1) is connected to and fixed with an inlet (2), and one side of the valve body (1) is connected to and fixed with an outlet (3). An isolation seat (10) and a valve seat (12) are fixedly connected in the middle of the valve body (1). The isolation seat (10) is located between the valve seat (12) and the inlet (2), and the valve seat (12) is located between the isolation seat (10) and the outlet (3). A mounting seat (4) is fixedly connected to one side of the valve body (1) above the isolation seat (10). A filter cartridge (6) is threaded onto the mounting base (4). One end of the filter cartridge (6) is inserted into the valve body (1) at an angle. A connection port (11) is provided through the isolation seat (10). One end of the filter cartridge (6) is connected to the connection port (11), and the other end is fixedly connected to a knob (5). A valve stem (16) assembly is provided on the top of the valve body (1). A valve port (13) is provided on the valve seat (12). The lower end of the valve stem (16) assembly is engaged with the valve port (13).

2. The PVDF plastic heating control valve according to claim 1, characterized in that, The isolation seat (10) is shaped as an inclined "L". The filter cylinder (6) is located inside the valve body (1) and is connected to the upper end of the isolation seat (10). The connection port (11) is coaxially connected to the filter cylinder (6). The diameter of the connection port (11) is smaller than the inner diameter of the filter cylinder (6). The knob (5) is located outside the mounting base (4).

3. The PVDF plastic heating control valve according to claim 1, characterized in that, The valve stem (16) assembly includes a fixing ring (14), which is fixed to the inner wall of the valve body (1). The outlet (3) is located between the fixing ring (14) and the valve seat (12). A sealing block (15) is snapped onto the top of the inner wall of the valve seat (12). The sealing block (15) abuts against the fixing ring (14). The valve stem (16) is threadedly connected to the middle of the sealing block (15). The valve stem (16) is coaxial with the valve body (1). A plug (17) is fixed to the lower end of the valve stem (16). The plug (17) is inserted into the valve port (13).

4. A PVDF plastic heating control valve according to claim 3, characterized in that, A top seat (21) is fixedly connected to the upper end of the valve body (1). A valve cover (8) is rotatably installed on the top seat (21). A retaining frame (19) is fixedly connected inside the valve cover (8). A drive block (18) is fixedly connected to the top side wall of the valve stem (16). The retaining frame (19) and the drive block (18) are inserted and engaged. The end of the retaining frame (19) abuts against the sealing block (15).

5. A PVDF plastic heating control valve according to claim 4, characterized in that, A connecting ring (20) is fixed to the inner wall of the valve cover (8), and a recessed ring (25) is provided on the side wall of the top seat (21). The connecting ring (20) is rotatably installed in the recessed ring (25), and multiple sets of protrusions (9) are fixed to the outer wall of the valve cover (8).

6. A PVDF plastic heating control valve according to claim 1, characterized in that, The inlet (2) is rotatably mounted with a fastening plate (22). One end of the fastening plate (22) is fixed with a spherical block (23) for engaging with an external connecting pipe. The inlet (2) is sleeved and slidably connected with a retaining ring (24), and the fastening plate (22) is located inside the retaining ring (24).

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