Multifunctional loose joint electric check valve

Abstract

The multifunctional loose-joint electric check valve comprises a valve body, the right end of an inner cavity of the valve body is movably connected with a shutoff ball body, a valve rod is fixedly installed at the top of the shutoff ball body, and the surface of the valve rod is movably connected to the upper end of the inner cavity of the valve body. The nut is additionally arranged on the right side of the butt-joint pipe in advance, the butt-joint pipe can be directly connected with the water meter in the overall use process, the installation working hours are effectively saved, the working efficiency is improved, meanwhile, the sealing valve clack, the guide valve seat, the first permanent magnet and the second permanent magnet are additionally arranged in the butt-joint pipe, and the sealing effect is good. By means of the principle that like poles of the first permanent magnet and the second permanent magnet repel each other, the sealing valve clack can form a good magnetic force non-return effect in the butt joint pipe, and it is avoided that due to the fact that pressure difference exists in a water supply pipeline, water flows back, and a water meter conducts reverse metering; and the water body in the water supply pipeline is prevented from being polluted due to backflow.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply equipment, and more specifically to a multi-functional quick-connect electric check valve. Background Art

[0002] Currently, during the installation or project transformation of one household one meter by water supply companies, in order to achieve a remote control management mode, electric control valves are often installed in the household inlet pipelines. While being able to precisely control the water flow, remote operation and automated management are achieved. However, the current electric control valves lack the function of quickly connecting to water meters during use. During the installation of water meters, it is usually necessary to use connecting nuts to separately install between the valve and the water meter, increasing the use cost while reducing the installation operation efficiency. At the same time, the interior of the electric control valve lacks a check function. When the pressure at the valve body end is less than the water pressure at the water meter end, the water in the water supply pipeline is prone to flow back, resulting in the water meter running idly, affecting the metering accuracy and also easily causing pollution of the water in the water supply pipeline, affecting the water use safety of users. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-functional quick-connect electric check valve, which has the advantages of improving the installation efficiency of personnel for water meters and being able to form a good magnetic check effect at the front end of the water meter, avoiding the backflow of water in the water supply pipeline due to pressure difference.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A multi-functional quick-connect electric check valve, including a valve body. A throttling sphere is movably connected to the right end of the inner cavity of the valve body. A valve stem is fixedly installed at the top of the throttling sphere. The surface of the valve stem is movably connected to the upper end of the inner cavity of the valve body. An electric head is fixedly installed between the top of the valve stem and the right end of the top of the valve body. A docking pipe is threadedly connected to the right side of the valve body. A nut is movably connected to the right end of the outer surface of the docking pipe. A sealing valve flap is movably connected to the left end of the inner cavity of the docking pipe. A first permanent magnet is fixedly connected between the peripheries at the left end of the sealing valve flap. A guiding valve seat is movably connected to the right end of the sealing valve flap. The surface of the guiding valve seat is fixedly connected to the inner cavity of the docking pipe. A second permanent magnet is fixedly connected between the peripheries at the left end of the guiding valve seat.

[0005] As a preferred solution, a first polytetrafluoroethylene sealing seat ring is fixedly connected to the left side of the sealing valve flap. A second polytetrafluoroethylene sealing seat ring is fixedly connected to the left end of the inner cavity of the docking pipe. The left side of the first polytetrafluoroethylene sealing seat ring is movably connected to the right side of the second polytetrafluoroethylene sealing seat ring.

[0006] As a preferred solution, ceramic seat rings are fixedly connected to both ends of the inner cavity of the guiding valve seat. A ceramic sleeve is fixedly connected to the right end of the sealing valve flap. Ceramic balls are movably connected between the surfaces of the ceramic seat ring and the ceramic sleeve.

[0007] As a preferred solution, a power supply wire is fixedly installed on the right side of the electric head. A wire arranging cylinder is sleeved on the left end of the power supply wire. The left side of the wire arranging cylinder is fixedly connected to the right side of the electric head. A rubber sealing ring is fixedly connected to the inner cavity of the wire arranging cylinder. The surface of the rubber sealing ring is movably connected to the surface of the power supply wire.

[0008] As a preferred solution, a rubber protection sleeve is sleeved on the right end of the power supply wire. A heat shrinkable sleeve is sleeved between the left end of the rubber protection sleeve and the right end of the outer surface of the wire arranging cylinder. A spiral protection steel wire is fixedly connected to the middle end of the rubber protection sleeve.

[0009] As a preferred solution, a first O-ring is sleeved between the upper end of the valve stem and the right end of the top of the valve body. The bottom of the electric head is movably connected to the top of the first O-ring. A second O-ring is sleeved on the right end of the top of the valve body and outside the first O-ring. The bottom of the electric head is movably connected to the top of the second O-ring.

[0010] As a preferred solution, third O-rings are sleeved on both ends of the valve stem. The surface of the third O-ring is movably connected to the upper end of the inner cavity of the valve body. Two spherical gaskets are fixedly installed on the right end of the inner cavity of the valve body. The surface of the throttling sphere is movably connected to the surface of the spherical gasket.

[0011] As a preferred solution, a fourth O-ring is sleeved on the left side of the docking pipe. The left side of the fourth O-ring is movably connected to the right side of the valve body.

[0012] As a preferred solution, a guide groove is opened at the right end of the outer surface of the docking pipe. A limiting ring is fixedly connected to the left end of the nut. The surface of the limiting ring is movably connected to the surface of the guide groove.

[0013] As a preferred solution, a docking thread is opened at the left end of the inner cavity of the valve body. A rubber sealing gasket is fixedly installed on the left end of the inner cavity of the valve body and to the right of the docking thread.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. By adding a nut to the right side of the docking pipe in advance, the present invention can be directly connected to the water meter during the overall use process, effectively saving installation man-hours and improving work efficiency. At the same time, by adding a sealing valve flap, a guiding valve seat, a first permanent magnet, and a second permanent magnet inside the docking pipe, the principle of like poles repelling each other between the first permanent magnet and the second permanent magnet can be utilized to enable the sealing valve flap to form a good magnetic check effect inside the docking pipe, avoiding reverse metering of the water meter caused by water body backflow due to pressure difference in the water supply pipeline, and avoiding pollution of the water body in the water supply pipeline due to backflow.

[0016] 2. Through the settings of the first polytetrafluoroethylene sealing seat ring and the second polytetrafluoroethylene sealing seat ring, the present invention can form a good anti-corrosion and wear-resistant effect between the contact surfaces of the docking pipe and the sealing valve flap, effectively reducing the risk of leakage between the contact surfaces of the docking pipe and the sealing valve flap under the impact and erosion of water flow during long-term use. Through the settings of the ceramic seat ring, ceramic balls, and ceramic sleeves, a good wear-resistant effect can be formed between the contact surfaces of the guiding valve seat and the sealing valve flap, avoiding wear between the guiding valve seat and the sealing valve flap during long-term use and affecting the subsequent check valve sealing effect.

[0017] 3. Through the settings of the wire arranging cylinder, rubber sealing ring, and heat shrinkable sleeve, the present invention can form a good seal between the power supply wire and the electric head, avoiding water body from entering the inside of the electric head along the gaps around the power supply wire and causing damage to the electric head. At the same time, through the settings of the rubber protective sleeve and the spiral protective steel wire, a good protection can be formed around the power supply wire, avoiding damage to the power supply wire due to force or extrusion.

[0018] 4. Through the settings of the first O-ring and the second O-ring, the present invention effectively improves the sealing performance of the contact between the electric head, the valve body, and the valve stem, avoiding water body from entering the inside of the electric head and causing damage. Through the settings of the third O-ring and the spherical sealing gasket, the sealing performance of the contact between the valve stem and the valve body, and between the throttling sphere and the valve body is effectively improved respectively. Through the setting of the fourth O-ring, the sealing performance of the installation between the valve body and the docking pipe is effectively improved, avoiding water body leakage. Through the settings of the guide groove and the limiting ring, the purpose of limiting and guiding between the nut and the docking pipe is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional view of the present invention;

[0020] Figure 2 is a front sectional structural schematic diagram of the present invention;

[0021] Figure 3 is a front sectional structural schematic diagram of the guiding valve seat of the present invention;

[0022] Figure 4 For the present invention Figure 2 is a partially enlarged view of part B in the present invention;

[0023] Figure 5 For the present invention Figure 1 is a partially enlarged view of part A in the present invention.

[0024] In the figure: 1, valve body; 2, docking pipe; 3, nut; 4, electric head; 5, first O-ring; 6, second O-ring; 7, valve stem; 8, third O-ring; 9, spherical gasket; 10, throttling sphere; 11, guiding valve seat; 12, guide groove; 13, limiting ring; 14, sealing valve flap; 15, first polytetrafluoroethylene sealing seat ring; 16, first permanent magnet; 17, second permanent magnet; 18, ceramic seat ring; 19, ceramic bushing; 20, ceramic ball; 21, second polytetrafluoroethylene sealing seat ring; 22, fourth O-ring; 23, wire arranging cylinder; 24, spiral protective steel wire; 25, rubber protective sleeve; 26, heat shrinkable sleeve; 27, rubber sealing ring; 28, power supply wire. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0027] Embodiment 1:

[0028] Please refer to Figures 1 - 5As shown in the figure, the present invention provides a multi-functional union electric check valve, which includes a valve body 1. The right end of the inner cavity of the valve body 1 is movably connected with a throttling sphere 10. The top of the throttling sphere 10 is fixedly installed with a valve stem 7. The surface of the valve stem 7 is movably connected to the upper end of the inner cavity of the valve body 1. An electric head 4 is fixedly installed between the top of the valve stem 7 and the right end of the top of the valve body 1. The right side of the valve body 1 is threadedly connected with a docking pipe 2. The right end of the outer surface of the docking pipe 2 is movably connected with a nut 3. The left end of the inner cavity of the docking pipe 2 is movably connected with a sealing valve flap 14. A first permanent magnet 16 is fixedly connected between the four circumferences at the left end of the sealing valve flap 14. The right end of the sealing valve flap 14 is movably connected with a guiding valve seat 11. The surface of the guiding valve seat 11 is fixedly connected to the inner cavity of the docking pipe 2. A second permanent magnet 17 is fixedly connected between the four circumferences at the left end of the guiding valve seat 11.

[0029] In this technical solution, by pre-installing a nut 3 on the right side of the docking pipe 2, it can be directly connected to the water meter during the overall use process, effectively saving installation man-hours and improving work efficiency. At the same time, by adding a sealing valve flap 14, a guiding valve seat 11, a first permanent magnet 16 and a second permanent magnet 17 inside the docking pipe 2, the principle of like poles repelling each other between the first permanent magnet 16 and the second permanent magnet 17 can be utilized to enable the sealing valve flap 14 to form a good magnetic check effect inside the docking pipe 2, avoiding reverse metering of the water meter caused by the water body flowing back due to the pressure difference in the water supply pipeline, and avoiding pollution of the water body in the water supply pipeline due to backflow.

[0030] Embodiment Two:

[0031] On the basis of Embodiment One, as shown in Figure 3 and Figure 4 the figure, it is disclosed that a first polytetrafluoroethylene sealing seat ring 15 is fixedly connected to the left side of the sealing valve flap 14. A second polytetrafluoroethylene sealing seat ring 21 is fixedly connected to the left end of the inner cavity of the docking pipe 2. The left side of the first polytetrafluoroethylene sealing seat ring 15 is movably connected to the right side of the second polytetrafluoroethylene sealing seat ring 21. Ceramic seat rings 18 are fixedly connected to both ends of the inner cavity of the guiding valve seat 11. A ceramic sleeve 19 is fixedly connected to the right end of the sealing valve flap 14. Ceramic balls 20 are movably connected between the surfaces of the ceramic seat ring 18 and the ceramic sleeve 19.

[0032] In this technical solution, through the arrangement of the first polytetrafluoroethylene sealing seat ring 15 and the second polytetrafluoroethylene sealing seat ring 21, a good anti-corrosion and wear-resistant effect can be formed between the contact surfaces of the butt joint pipe 2 and the sealing valve flap 14, effectively reducing the risk of leakage between the contact surfaces of the butt joint pipe 2 and the sealing valve flap 14 caused by the impact and erosion of water flow during long-term use. Through the arrangement of the ceramic seat ring 18, the ceramic ball 20 and the ceramic sleeve 19, a good wear-resistant effect can be formed between the contact surfaces of the guiding valve seat 11 and the sealing valve flap 14, avoiding wear between the guiding valve seat 11 and the sealing valve flap 14 during long-term use and affecting the subsequent check valve sealing effect.

[0033] Embodiment Three:

[0034] On the basis of Embodiment One, as shown in the present invention Figure 5 a power supply wire 28 is fixedly installed on the right side of the electric head 4. A wire arranging cylinder 23 is sleeved on the left end of the power supply wire 28. The left side of the wire arranging cylinder 23 is fixedly connected to the right side of the electric head 4. A rubber sealing ring 27 is fixedly connected to the inner cavity of the wire arranging cylinder 23. The surface of the rubber sealing ring 27 is movably connected to the surface of the power supply wire 28. A rubber protective sleeve 25 is sleeved on the right end of the power supply wire 28. A heat shrinkable sleeve 26 is sleeved between the left end of the rubber protective sleeve 25 and the right end of the outer surface of the wire arranging cylinder 23. A spiral protective steel wire 24 is fixedly connected to the middle end of the rubber protective sleeve 25.

[0035] In this technical solution, through the arrangement of the wire arranging cylinder 23, the rubber sealing ring 27 and the heat shrinkable sleeve 26, a good seal can be formed between the power supply wire 28 and the electric head 4, avoiding water from entering the interior of the electric head 4 along the gaps around the power supply wire 28 and causing damage to the electric head 4. At the same time, through the arrangement of the rubber protective sleeve 25 and the spiral protective steel wire 24, a good protection can be formed around the power supply wire 28, avoiding damage to the power supply wire 28 due to force or extrusion.

[0036] Embodiment Four:

[0037] On the basis of Embodiment One, as shown in the present invention Figure 2As shown in the figure, a first O-ring seal 5 is sleeved between the upper end of the valve stem 7 and the right end of the top of the valve body 1. The bottom of the electric head 4 is movably connected to the top of the first O-ring seal 5. A second O-ring seal 6 is sleeved outside the first O-ring seal 5 at the right end of the top of the valve body 1. The bottom of the electric head 4 is movably connected to the top of the second O-ring seal 6. Third O-ring seals 8 are sleeved at both ends of the valve stem 7. The surface of the third O-ring seal 8 is movably connected to the upper end of the inner cavity of the valve body 1. A spherical gasket 9 is fixedly installed at the right end of the inner cavity of the valve body 1. The number of the spherical gaskets 9 is two. The surface of the throttling sphere 10 is movably connected to the surface of the spherical gasket 9. A fourth O-ring seal 22 is sleeved on the left side of the docking pipe 2. The left side of the fourth O-ring seal 22 is movably connected to the right side of the valve body 1. A guide groove 12 is opened at the right end of the outer surface of the docking pipe 2. The left end of the nut 3 is fixedly connected with a limiting ring 13. The surface of the limiting ring 13 is movably connected to the surface of the guide groove 12. A docking thread is opened at the left end of the inner cavity of the valve body 1. A rubber gasket is fixedly installed at the right side of the docking thread at the left end of the inner cavity of the valve body 1.

[0038] In this technical solution, through the arrangement of the first O-ring seal 5 and the second O-ring seal 6, the sealing performance of the contact between the electric head 4, the valve body 1 and the valve stem 7 is effectively improved, avoiding water entering the inside of the electric head 4 and causing damage. Through the arrangement of the third O-ring seal 8 and the spherical gasket 9, the sealing performance of the contact between the valve stem 7 and the valve body 1, and between the throttling sphere 10 and the valve body 1 is effectively improved respectively. Through the arrangement of the fourth O-ring seal 22, the sealing performance of the installation between the valve body 1 and the docking pipe 2 is effectively improved, avoiding water leakage. Through the arrangement of the guide groove 12 and the limiting ring 13, the purpose of limiting and guiding between the nut 3 and the docking pipe 2 is achieved.

[0039] The working principle of the present invention is as follows: When the user uses water and causes pressure fluctuations, the water flow can flow from the left end of the valve body 1, pass through the throttling sphere 10 and touch the sealing valve flap 14. At the same time, when the water flow impact force is greater than the repulsive force of about 12 grams generated by the same-sex repulsion between the first permanent magnet 16 and the second permanent magnet 17 between the sealing valve flap 14 and the guiding valve seat 11, the sealing valve flap 14 can be opened from the left end of the docking pipe 2, so that the water flow can be transported through the docking pipe 2 to the water meter connected to the nut 3, and the water meter can generate positive metering. And when the user closes the water-using appliance or due to pressure fluctuations, and the water pressure at the water meter end is greater than the water pressure inside the valve body 1, during the process that the water flow flows from the water meter end into the valve body 1, the water flow can push the sealing valve flap 14 in the reverse direction, causing the sealing valve flap 14 to fit with the sealing surface of the docking pipe 2. Thus, while blocking the water flow from flowing back through the throttling sphere 10, no water flow flows back through the water meter, effectively preventing reverse sewage from flowing back into the water meter and ensuring that the water meter has no reverse metering.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A multifunctional live-joint electric check valve, comprising a valve body (1), characterized in that: The right end of the inner cavity of the valve body (1) is movably connected to a shutoff ball (10), the top of the shutoff ball (10) is fixedly installed with a valve stem (7), the surface of the valve stem (7) is movably connected to the upper end of the inner cavity of the valve body (1), an electric head (4) is fixedly installed between the top of the valve stem (7) and the right end of the top of the valve body (1), the right side of the valve body (1) is threadedly connected to a docking tube (2), the right end of the outer surface of the docking tube (2) is movably connected to a nut (3), the left end of the inner cavity of the docking tube (2) is movably connected to a sealing valve flap (14), the left end of the sealing valve flap (14) is fixedly connected to a first permanent magnet (16) around the left end, the right end of the sealing valve flap (14) is movably connected to a guide valve seat (11), the surface of the guide valve seat (11) is fixedly connected to the inner cavity of the docking tube (2), and the left end of the guide valve seat (11) is fixedly connected to a second permanent magnet (17) around the left end.

2. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: The left side of the sealing valve flap (14) is fixedly connected to a first polytetrafluoroethylene sealing seat ring (15), the left end of the inner cavity of the butt-joint pipe (2) is fixedly connected to a second polytetrafluoroethylene sealing seat ring (21), and the left side of the first polytetrafluoroethylene sealing seat ring (15) is movably connected to the right side of the second polytetrafluoroethylene sealing seat ring (21).

3. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: Both ends of the inner cavity of the guide valve seat (11) are fixedly connected to a ceramic seat ring (18), the right end of the sealing valve flap (14) is fixedly connected to a ceramic sleeve (19), and a ceramic ball (20) is movably connected between the surface of the ceramic seat ring (18) and the surface of the ceramic sleeve (19).

4. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: A power supply wire (28) is fixedly installed on the right side of the electric head (4), a wire bobbin (23) is sleeved on the left end of the power supply wire (28), the left side of the wire bobbin (23) is fixedly connected to the right side of the electric head (4), a rubber sealing ring (27) is fixedly connected to the inner cavity of the wire bobbin (23), and the surface of the rubber sealing ring (27) is movably connected to the surface of the power supply wire (28).

5. The multifunctional live-joint electric check valve according to claim 4 is characterized in that: The right end of the power supply wire (28) is sleeved with a rubber protective sleeve (25), a heat shrink sleeve (26) is sleeved between the left end of the rubber protective sleeve (25) and the right end of the outer surface of the cable drum (23), and the middle end of the rubber protective sleeve (25) is fixedly connected with a spiral protective steel wire (24).

6. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: A first O-ring (5) is sleeved between the upper end of the valve stem (7) and the right end of the top of the valve body (1); the bottom of the electric head (4) is movably connected to the top of the first O-ring (5); a second O-ring (6) is sleeved at the right end of the top of the valve body (1) and located outside the first O-ring (5); the bottom of the electric head (4) is movably connected to the top of the second O-ring (6).

7. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: Both ends of the valve stem (7) are sleeved with a third O-ring (8), the surface of the third O-ring (8) is movably connected to the upper end of the inner cavity of the valve body (1), and a ball sealing gasket (9) is fixedly installed at the right end of the inner cavity of the valve body (1). The number of the ball sealing gaskets (9) is two, and the surface of the intercepting ball (10) is movably connected to the surface of the ball sealing gasket (9).

8. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: A fourth O-type sealing ring (22) is sleeved on the left side of the butt joint pipe (2), and the left side of the fourth O-type sealing ring (22) is movably connected to the right side of the valve body (1).

9. The multifunctional live-joint electric check valve according to claim 1 is characterized in that: A guide groove (12) is provided at the right end of the outer surface of the butt joint tube (2), and a limiting ring (13) is fixedly connected to the left end of the nut (3), and the surface of the limiting ring (13) is movably connected to the surface of the guide groove (12).

10. The multifunctional live-joint electric check valve according to claim 1, characterized in that: A butt-jointed thread is provided at the left end of the inner cavity of the valve body (1), and a rubber sealing pad is fixedly installed at the left end of the inner cavity of the valve body (1) and to the right of the butt-jointed thread.

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