One-way valve with anti-freezing effect

Abstract

The one-way valve with the anti-freezing effect comprises a valve body, a valve element, a spring and a one-way channel and further comprises an electric tracing band wound on the peripheral side of the valve body, and the valve body comprises a first end body located on one side of the valve element, a first valve pipe arranged on the first end body, a second end body located on one side of the spring and a second valve pipe embedded in the first valve pipe. An internal thread face is arranged on the inner wall of the circumferential side of the first valve pipe, an external thread face in threaded connection with the interior of the internal thread face is arranged on the outer wall of the circumferential side of the second valve pipe, and a first annular groove for winding of an electric tracing band is formed in the position, located at one end of the internal thread face, of the inner wall of the circumferential side of the first valve pipe. The outer wall of the first valve pipe is provided with a first opening allowing the electric tracing band to penetrate into the first ring groove, a second ring groove allowing the electric tracing band to wind is formed in the inner wall of the peripheral side of the first valve pipe and located at the end, away from the first ring groove, of the internal thread face, and the outer wall of the first valve pipe is provided with a second opening allowing the electric tracing band to penetrate into the second ring groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of one-way valve design, in particular to a one-way valve with antifreeze effect. Background Art

[0002] A one-way valve allows fluid to flow only through the inlet but not back through the outlet. Also known as a check valve or non-return valve, it is used in hydraulic systems to prevent reverse flow of oil and in pneumatic systems to prevent reverse flow of compressed air.

[0003] At present, a Chinese patent with publication number CN221743278U and publication date September 20, 2024 discloses a one-way valve, including a valve body tube, in which a valve seat, a valve core and a limit member are arranged in sequence along the axial extension direction of the valve body tube, wherein the positions of the valve seat, the limit member and the valve body tube are relatively fixed, and the valve seat has a valve port extending along its axial direction. The valve core can be axially slidably assembled in the valve body tube to have a forward connecting position of the conducting valve port and a reverse shut-off position of the shut-off valve port. It also includes a spring, which is located between the valve core and the limit member, and is in a free state when the valve core is in the reverse shut-off position.

[0004] This type of one-way valve can use the elastic force of the spring to reduce the axial displacement of the valve core, thereby reducing the friction noise between the valve core and the contact parts on its moving path. On the other hand, it can also use the elastic effect of the spring to buffer the axial movement of the valve core, and can also reduce the abnormal noise generated by the movement of the valve core under low pressure difference conditions.

[0005] In a low-temperature environment, the liquid flowing in the one-way valve is easily frozen, thereby affecting the normal operation of the entire pipeline. Utility Model Content

[0006] The utility model aims to provide a one-way valve with an antifreeze effect, which can prevent the one-way valve from being frozen.

[0007] The above technical objectives of the present utility model are achieved through the following technical solutions: a one-way valve with an anti-freeze effect, comprising a valve body, a valve core located in the valve body, a spring located at one end of the valve core, a one-way channel opened at the end of the valve core away from the spring, and also comprising an electric heating tape wound around the valve body, the valve body comprising a first end body located on one side of the valve core, a first valve pipe arranged on the first end body, a second end body located on one side of the spring, and a second valve pipe embedded in the first valve pipe, the first valve pipe having an internal threaded surface provided on the internal wall of the external ...

[0008] The present invention is further configured as follows: a sealing ring is provided in one end of the second valve tube close to the first end body, and a pressure ring for pressing against the sealing ring is provided on the inner wall of the circumference of the second valve tube.

[0009] The present invention is further configured as follows: a positioning groove for embedding the sealing ring is provided in the first end body.

[0010] The present invention is further configured as follows: a filter is provided in the first end body.

[0011] The utility model is further configured as follows: the filter screen is in a conical shape with the tip facing one side of the valve core.

[0012] The utility model is further configured as follows: a guide sleeve is provided on the peripheral side of the filter screen.

[0013] In summary, the present invention has the following beneficial effects:

[0014] 1. When the valve body is installed, the second valve tube of the second end body is embedded in the first valve tube of the first end body, and the external threaded surface on the outer wall of the second valve tube is threadedly connected to the internal threaded surface on the inner wall of the first valve tube. At this time, the first end body and the second end body can be detachably connected; then the electric heating tape can be inserted into the first annular groove from the first opening, and wound along the first annular groove and then passed out from the first opening; then the electric heating tape that has passed through the first opening is wound around the outer wall of the first valve tube and enters the second annular groove from the second opening, and wound along the second annular groove and then passed out from the second opening; at this time, the electric heating tape can effectively supply heat to the circumference of the first and second annular grooves after being energized, and the heat loss can be reduced by wrapping the first and second annular grooves, and finally the electric heating tape can play an anti-freeze effect on the one-way valve, preventing the one-way valve from being frozen in a low temperature environment;

[0015] 2. When the second valve tube is embedded in the first valve tube, the second valve tube presses against the sealing ring using the pressure ring, thereby sealing the gap between the first valve tube and the second valve tube;

[0016] 3. A positioning groove is used in the first end body for the sealing ring to be embedded, which is conducive to the stable sealing of the gap by the sealing ring;

[0017] 4. The filter screen provided in the first end body allows the liquid entering the valve body to first pass through the filter screen before entering the valve core. At this time, the filter screen can filter the liquid entering the valve core, preventing impurities from entering the valve core and clogging the valve core, thus ensuring the stable operation of the valve core in the valve body;

[0018] 5. The filter is in a conical shape with the tip facing the valve core. This allows impurities to gather towards the tip of the filter, reducing the possibility of filter clogging.

[0019] 6. The filter screen is embedded in the first end body by means of a guide sleeve, which can guide the filter screen and is conducive to the stable installation of the filter screen in the first end body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural sectional view of the utility model;

[0022] Figure 2 It is a structural diagram of the present utility model.

[0023] In the figure, 1. valve body; 11. first end body; 111. positioning groove; 12. first valve pipe; 121. internal threaded surface; 122. first annular groove; 123. first opening; 124. second annular groove; 125. second opening; 13. second end body; 14. second valve pipe; 141. external threaded surface; 142. pressure ring; 2. valve core; 21. one-way channel; 3. spring; 4. electric heating tape; 5. sealing ring; 6. filter screen; 61. guide sleeve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments are described clearly and completely below. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] A one-way valve with antifreeze effect, refer to Figure 1 , this one-way valve with antifreeze effect includes a valve body 1, a valve core 2, a spring 3, a one-way channel 21 and an electric heating tape 4, wherein the valve body 1 includes a first end body 11, a first valve tube 12, a second end body 13, and a second valve tube 14, the first end body 11 and the second end body 13 are respectively located on both sides, and the first valve tube 12 is integrally arranged on the first end body 11, and the second valve tube 14 is integrally arranged on the second end body 13 and is used to be embedded in the first valve tube 12; the valve core 2 is located inside the valve body 1 and close to the side of the first end body 11, wherein the spring 3 is located inside the valve body 1 and close to the side of the second end body 13, and the one-way channel 21 is opened on the valve core 2 and allows liquid to circulate; at the same time, an internal threaded surface 121 is integrally provided on the inner wall of the circumference of the first valve tube 12, and an external threaded surface 141 threadedly connected to the internal threaded surface 121 is integrally provided on the outer wall of the circumference of the second valve tube 14.

[0026] Reference Figure 1 、 Figure 2 The electric heating tape 4 is wound around the valve body 1, wherein the electric heating tape 4 is composed of a conductive polymer, two parallel metal wires and an insulating sheath. When the electric heating tape 4 is energized, heat is generated on the surface of the electric heating tape 4. At the same time, a first annular groove 122 for winding the electric heating tape 4 is provided on the inner wall of the outer thread surface 121 of the first valve tube 12, and a first opening 123 for inserting the electric heating tape 4 into the first annular groove 122 is provided on the outer wall of the first valve tube 12. A second annular groove 124 for winding the electric heating tape 4 is provided on the inner wall of the outer thread surface 121 of the first valve tube 12, and a second opening 125 for inserting the electric heating tape 4 into the second annular groove 124 is provided on the outer wall of the first valve tube 12.

[0027] Reference Figure 1 A sealing ring 5 is provided in the end of the second valve tube 14 close to the first end body 11, and a pressure ring 142 for pressing against the sealing ring 5 is integrally provided on the inner wall of the peripheral side of the second valve tube 14, and a positioning groove 111 for the sealing ring 5 to be embedded is opened in the first end body 11; wherein a filter screen 6 is provided in the first end body 11, and the filter screen 6 is conical in shape with the tip facing the side of the valve core 2, and at the same time, a guide sleeve 61 embedded in the first end body 11 is welded to the peripheral side of the filter screen 6.

[0028] Principle: When the valve body 1 is installed, the second valve tube 14 of the second end body 13 is embedded in the first valve tube 12 of the first end body 11, and the external threaded surface 141 on the outer wall of the second valve tube 14 is threadedly connected to the internal threaded surface 121 on the inner wall of the first valve tube 12. At this time, the first end body 11 and the second end body 13 can be detachably connected. Then, the electric heating cable 4 can be inserted into the first annular groove 122 from the first opening 123, and after being wound along the first annular groove 122, it can be passed out from the first opening 123. Then, it can be removed from the first opening 123. The electric heating tape 4 passing through the opening 123 is wound around the outer wall of the first valve tube 12 and then enters the second annular groove 124 from the second opening 125, and is wound along the second annular groove 124 and then passes through the second opening 125; at this time, the electric heating tape 4 can effectively supply heat to the surrounding sides of the first annular groove 122 and the second annular groove 124 after being energized, and the heat loss can be reduced by wrapping the first annular groove 122 and the second annular groove 124, and finally the electric heating tape 4 can have an antifreeze effect on the one-way valve, preventing the one-way valve from being frozen in a low temperature environment.

Claims

1. A one-way valve with an antifreeze effect, comprising a valve body (1), a valve core (2) located in the valve body (1), a spring (3) located at one end of the valve core (2), and a one-way channel (21) provided at the end of the valve core (2) away from the spring (3), characterized in that: The valve body (1) further comprises an electric heating tape (4) wound around the circumference of the valve body (1), wherein the valve body (1) comprises a first end body (11) located on one side of the valve core (2), a first valve tube (12) arranged on the first end body (11), a second end body (13) located on one side of the spring (3), and a second valve tube (14) embedded in the first valve tube (12), wherein the inner wall of the circumference of the first valve tube (12) is provided with an internal threaded surface (121), the outer wall of the circumference of the second valve tube (14) is provided with an external threaded surface (141) threadedly connected to the inner threaded surface (121), and the inner wall of the circumference of the first valve tube (12) is provided with an external threaded surface (141) threadedly connected to the inner threaded surface (121). A first annular groove (122) for winding the power heating tape (4) is provided on the inner thread surface (121) at one end thereof, a first opening (123) for the power heating tape (4) to pass through the first annular groove (122) is provided on the outer wall of the first valve tube (12), a second annular groove (124) for winding the power heating tape (4) is provided on the inner wall of the circumferential side of the first valve tube (12) at one end thereof away from the first annular groove (122), and a second opening (125) for the power heating tape (4) to pass through the second annular groove (124) is provided on the outer wall of the first valve tube (12).

2. A one-way valve with antifreeze effect according to claim 1, characterized in that: A sealing ring (5) is provided in one end of the second valve tube (14) close to the first end body (11), and a pressure ring (142) for pressing against the sealing ring (5) is provided on the inner wall of the circumference of the second valve tube (14).

3. A one-way valve with antifreeze effect according to claim 2, characterized in that: A positioning groove (111) for the sealing ring (5) to be embedded is provided in the first end body (11).

4. The one-way valve with antifreeze effect according to claim 1, characterized in that: A filter screen (6) is provided in the first end body (11).

5. The one-way valve with antifreeze effect according to claim 4, characterized in that: The filter screen (6) is in a conical shape with the tip facing one side of the valve core (2).

6. The one-way valve with antifreeze effect according to claim 4, characterized in that: A guide sleeve (61) is provided on the peripheral side of the filter screen (6).

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