Safe anti-freezing ball valve

Abstract

The utility model discloses a safe anti-freezing ball valve, and relates to the field of ball valves. The safety anti-freezing ball valve comprises a ball valve shell and a valve rod installed on the top of the ball valve shell, a spherical valve element is arranged in the ball valve shell and comprises a hollow valve element body, the hollow valve element body is rotationally arranged in the ball valve shell, and the hollow valve element body is connected with the valve rod; the electric heating wire is fixedly installed in an inner wall interlayer of the hollow valve element body and used for heating the hollow valve element body. According to the safe anti-freezing ball valve, when the external environment temperature is reduced to be below zero DEG C, the electric heating wire is started through the temperature control switch, the electric heating wire conducts heating, meanwhile, wrapping is conducted through the external heat preservation sleeve, the temperature of the spherical valve element is kept above zero DEG C all the time, and internal fluid is prevented from being solidified; therefore, damage to internal parts of the ball valve due to fluid solidification is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a safety antifreeze ball valve. Background Art

[0002] A ball valve is a fluid valve with a spherical internal valve core. A through hole is provided on the spherical valve core. By rotating the through hole to face the internal channel of the valve body, the fluid can pass through the valve core. When the through hole is rotated to fit closely to the side wall of the valve body, the valve core blocks the internal fluid channel of the valve body and completes the closure.

[0003] In actual use, due to the limitations of the installation environment, the ball valve is usually directly exposed to the outside air. When the external ambient temperature drops below zero, the circulating liquid inside the ball valve is very likely to solidify. On the one hand, it affects the normal use of the ball valve. On the other hand, the liquid will expand in volume after solidification, causing damage to the rubber seal inside the ball valve, thereby affecting the sealing of the ball valve. For this reason, a safety antifreeze ball valve is specially provided to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a safety antifreeze ball valve, which solves the problem that when the external ambient temperature drops below zero, the circulating liquid inside the ball valve is very likely to solidify, which on the one hand affects the normal use of the ball valve, and on the other hand, the liquid expands in volume after solidification, causing damage to the rubber seal inside the ball valve, thereby affecting the sealing performance of the ball valve.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a safety antifreeze ball valve, comprising a ball valve housing and a valve stem installed on the top of the ball valve housing, a spherical valve core is arranged inside the ball valve housing, and the spherical valve core comprises;

[0006] A hollow valve core body is rotatably disposed inside the ball valve housing, and the hollow valve core body is connected to the valve stem;

[0007] The heating wire is fixedly installed in the inner wall interlayer of the hollow valve core body, and the heating wire is used to heat the hollow valve core body.

[0008] Preferably, connecting flanges are fixedly installed at both ends of the ball valve housing, and a heat-insulating sleeve is installed on the outer surface of the ball valve housing.

[0009] Preferably, the valve stem is rotatably connected to the top of the ball valve housing via a bearing, a hexagonal connecting column is fixedly welded to the bottom end of the valve stem, a connecting groove is provided at the top of the hollow valve core body, and the hexagonal connecting column is movably inserted into the inside of the connecting groove.

[0010] Preferably, a sealing rubber pad is provided on the inner wall of the ball valve housing, the outer wall of the hollow valve core body is in contact with the sealing rubber pad, and through holes are provided in the middle of the hollow valve core body and the sealing rubber pad.

[0011] Preferably, a sealing cover is installed on the outer surface of the hollow valve core body, and the sealing cover is used to seal and protect the heating wire.

[0012] Preferably, a connecting ring is welded on the inner side wall of the hollow valve core body, the sealing cover is fixedly installed with the connecting ring by bolts, and a sealing rubber ring is arranged between the sealing cover and the connecting ring.

[0013] Preferably, an annular handle is fixedly mounted on the top of the valve stem, a connecting wire is arranged inside the valve stem, and the bottom end of the connecting wire passes through the hexagonal connecting column, and the connecting wire is electrically connected to the heating wire.

[0014] The utility model discloses a safety antifreeze ball valve, which has the following beneficial effects: during use, when the external ambient temperature drops below zero degrees, the heating wire is started by a temperature control switch to heat the heating wire, and at the same time, it is wrapped by an external insulation sleeve to keep the temperature at the spherical valve core above zero degrees at all times, thereby preventing the internal fluid from solidifying, thereby effectively preventing damage to the internal components of the ball valve due to fluid solidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0017] Figure 2 This is a cross-sectional view of the internal structure of the ball valve housing of the utility model;

[0018] Figure 3 This is an exploded view of the internal structure of the spherical valve core of the utility model.

[0019] In the figure: 1. ball valve body; 2. insulation sleeve; 3. valve stem; 4. ring handle; 5. connecting wire; 6. sealing rubber pad; 7. spherical valve core; 71. hollow valve core body; 72. through hole; 73. connecting groove; 74. heating wire; 75. connecting ring; 76. sealing cover; 77. sealing rubber ring; 8. connecting flange; 9. hexagonal connecting column. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The embodiment of the present application provides a safety antifreeze ball valve, which solves the problem that when the external ambient temperature drops below zero, the circulating liquid inside the ball valve is very likely to solidify, which on the one hand affects the normal use of the ball valve, and on the other hand, the liquid will expand in volume after solidification, causing damage to the rubber seal inside the ball valve, thereby affecting the sealing performance of the ball valve.

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] The utility model embodiment discloses a safety antifreeze ball valve.

[0024] According to the attached Figure 1-3 As shown, it includes a ball valve housing 1 and a valve stem 3 installed on the top of the ball valve housing 1. A spherical valve core 7 is arranged inside the ball valve housing 1. The spherical valve core 7 includes;

[0025] A hollow valve core body 71 is rotatably disposed inside the ball valve housing 1 , and the hollow valve core body 71 is connected to the valve stem 3 ;

[0026] The heating wire 74 is fixedly installed in the inner wall interlayer of the hollow valve core body 71 , and the heating wire 74 is used to heat the hollow valve core body 71 .

[0027] Connecting flanges 8 are fixedly mounted on both ends of the ball valve housing 1, and a heat-insulating sleeve 2 is mounted on the outer surface of the ball valve housing 1 to wrap it from the outside to prevent heat loss.

[0028] The valve stem 3 is rotatably connected to the top of the ball valve housing 1 through a bearing. A hexagonal connecting column 9 is fixedly welded to the bottom end of the valve stem 3. A connecting groove 73 is provided on the top of the hollow valve core body 71. The hexagonal connecting column 9 is movably inserted into the inside of the connecting groove 73.

[0029] The inner wall of the ball valve housing 1 is provided with a sealing rubber pad 6 , the outer wall of the hollow valve core body 71 is in contact with the sealing rubber pad 6 , and a through hole 72 is provided in the middle of the hollow valve core body 71 and the sealing rubber pad 6 .

[0030] A sealing cover 76 is installed on the outer surface of the hollow valve core body 71 . The sealing cover 76 is used to seal and protect the heating wire 74 to prevent the fluid in the pipeline from entering the inner wall of the hollow valve core body 71 .

[0031] A connecting ring 75 is welded on the inner wall of the hollow valve core body 71 , and a sealing cover 76 is fixedly installed with the connecting ring 75 by bolts. A sealing rubber ring 77 is provided between the sealing cover 76 and the connecting ring 75 .

[0032] A ring handle 4 is fixedly installed on the top of the valve stem 3, a connecting wire 5 is arranged inside the valve stem 3, and the bottom end of the connecting wire 5 passes through the hexagonal connecting column 9, the connecting wire 5 is electrically connected to the heating wire 74, and the connecting wire 5 is electrically connected to the external circuit, and a temperature control switch is installed on the circuit. When the external ambient temperature drops below zero degrees, the heating wire 74 is started by the temperature control switch, so that the heating wire 74 is heated, and at the same time, it is wrapped by the external insulation cover 2, so that the temperature at the spherical valve core 7 is always kept above zero degrees.

[0033] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0034] When the device is in use, it is connected to the fluid pipeline through the connecting flanges 8 at both ends of the ball valve housing 1, and the connecting wire 5 is electrically connected to the external circuit, and a temperature control switch is installed on the circuit. When in use, the annular handle 4 is rotated to drive the ball valve core 7 to rotate. When the through hole 72 on the surface of the hollow valve core body 71 rotates to be opposite to the through hole 72 on the sealing gasket 6, the fluid flows through the through hole 72. When the through hole 72 on the surface of the hollow valve core body 71 is close to the inner wall of the sealing gasket 6, the fluid is blocked. During use, when the external ambient temperature drops below zero degrees, the heating wire 74 is started by the temperature control switch to heat the heating wire 74, and at the same time, it is wrapped by the external insulation sleeve 2, so that the temperature at the ball valve core 7 is always kept above zero degrees to avoid solidification of the internal fluid, thereby effectively avoiding damage to the internal components of the ball valve due to fluid solidification.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A safety antifreeze ball valve, comprising a ball valve housing (1) and a valve stem (3) mounted on the top of the ball valve housing (1), wherein a spherical valve core (7) is arranged inside the ball valve housing (1), characterized in that: The spherical valve core (7) comprises: A hollow valve core body (71) is rotatably disposed inside the ball valve housing (1), and the hollow valve core body (71) is connected to the valve stem (3); The heating wire (74) is fixedly installed in the inner wall interlayer of the hollow valve core body (71), and the heating wire (74) is used to heat the hollow valve core body (71).

2. A safety antifreeze ball valve according to claim 1, characterized in that: Connecting flanges (8) are fixedly mounted on both ends of the ball valve housing (1), and a heat-insulating sleeve (2) is mounted on the outer surface of the ball valve housing (1).

3. A safety antifreeze ball valve according to claim 1, characterized in that: The valve stem (3) is rotatably connected to the top of the ball valve housing (1) via a bearing, a hexagonal connecting column (9) is fixedly welded to the bottom end of the valve stem (3), a connecting groove (73) is provided at the top of the hollow valve core body (71), and the hexagonal connecting column (9) is movably inserted into the interior of the connecting groove (73).

4. A safety antifreeze ball valve according to claim 2, characterized in that: The inner wall of the ball valve housing (1) is provided with a sealing rubber pad (6), the outer wall of the hollow valve core body (71) is in contact with the sealing rubber pad (6), and the middle parts of the hollow valve core body (71) and the sealing rubber pad (6) are both provided with through holes (72).

5. A safety antifreeze ball valve according to claim 2, characterized in that: A sealing cover (76) is installed on the outer surface of the hollow valve core body (71), and the sealing cover (76) is used to seal and protect the heating wire (74).

6. A safety antifreeze ball valve according to claim 5, characterized in that: A connecting ring (75) is welded on the inner wall of the hollow valve core body (71), the sealing cover (76) is fixedly installed with the connecting ring (75) by bolts, and a sealing rubber ring (77) is provided between the sealing cover (76) and the connecting ring (75).

7. A safety antifreeze ball valve according to claim 3, characterized in that: An annular handle (4) is fixedly mounted on the top of the valve stem (3), a connecting wire (5) is arranged inside the valve stem (3), and the bottom end of the connecting wire (5) passes through the hexagonal connecting column (9), and the connecting wire (5) is electrically connected to the heating wire (74).

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