A gravity valve

Abstract

The present invention discloses a gravity valve, comprising: a valve body having a valve cavity, a guide rod with a panel tightly fixed to the top and inserted into the valve cavity, the panel being located above the valve body, the guide rod being vertically fastened to the panel by an upper locking nut and a lower locking nut, the upper locking nut and the lower locking nut being respectively located on the upper and lower sides of the panel, a first split pin being further inserted in the radial direction of the guide rod, the first split pin being located below the lower locking nut and adjacent to the lower locking nut. This gravity valve can effectively prevent the loosening of the guide rod and the panel, and has the advantages of stable and reliable connection and long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical equipment, and particularly to a gravity valve. Background Art

[0002] A valve body is a device that uses a movable part to open, close or partially block one or more openings or channels, so that a liquid flow, an air flow or other gas flows or a large amount of loose materials can flow out, be blocked or be regulated. A gravity valve is a kind of valve body that is widely used in valve bodies. The existing defects of the gravity valve are as follows: the locking nut on the guide rod is prone to loosen, resulting in the loosening of the guide rod and the panel. Therefore, it is necessary to study a gravity valve. Summary of the Invention

[0003] In view of the deficiencies in the above technologies, the present invention provides a gravity valve that can effectively prevent the locking nut from loosening.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a gravity valve, comprising: a valve body having a valve cavity, a guide rod tightly fixed with a panel at the top and inserted into the valve cavity, the panel being located above the valve body, the guide rod being vertically fixed on the panel through an upper locking nut and a lower locking nut, the upper locking nut and the lower locking nut being respectively located on the upper and lower sides of the panel, and a first split pin being inserted in the radial direction of the guide rod, the first split pin being located below the lower locking nut and adjacent to the lower locking nut.

[0005] Preferably, a first external thread adapted to the upper locking nut and the lower locking nut is formed on the outer circumferential wall surface of the guide rod.

[0006] Preferably, a plurality of counterweight plates are stacked between the upper locking nut and the panel.

[0007] Preferably, the valve body is a columnar body with a hollow interior and openings at both axial ends; wherein, when the pressure inside the valve body is less than or equal to the external pressure, the panel is hermetically abutted against the top opening of the valve body, and when the pressure inside the valve body is greater than the external pressure, the panel floats upward and disengages from the valve body.

[0008] Preferably, a guide plate parallel to the panel is arranged in the valve cavity of the valve body, and a through hole for the vertical penetration of the guide rod is formed on the guide plate. Among them, the transverse cross-section of the guide plate is smaller than the transverse cross-section of the valve cavity, and the transverse cross-section is a plane perpendicular to the axial direction of the valve body.

[0009] Preferably, a bottom locking nut and a second split pin are further provided at the bottom of the guide rod. The second split pin is located below the bottom locking nut and adjacent to the bottom locking nut. The second split pin is inserted on the guide rod along the radial direction of the guide rod. Wherein, a second external thread cooperating with the bottom locking nut is provided on the outer circumferential wall surface of the guide rod.

[0010] Preferably, a counterweight is further provided on the guide rod, and the counterweight is located inside the valve body.

[0011] Preferably, a sealing groove is formed at the top of the valve body, a sealing ring is provided in the sealing groove, and the panel abuts against the sealing ring in the reset state.

[0012] Preferably, the diameter of the guide rod ranges from 6 to 8 mm.

[0013] Preferably, the diameter of the first split pin and the second split pin ranges from 1 to 2 mm.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: For the gravity valve provided by the present invention, by providing a first split pin below the lower locking nut, the first split pin can effectively prevent the lower locking nut from loosening, thereby avoiding the loosening of the guide rod and the panel, and having the advantages of stable and reliable connection and long service life; a counterweight is also provided on the guide rod, which is beneficial to the reset of the panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic internal structure diagram of the gravity valve of the present invention.

[0016] In the figure: 10, valve body; 11, sealing ring; 20, guide rod; 21, first split pin; 22, second split pin; 30, panel; 40, upper locking nut; 50, lower locking nut; 60, counterweight plate; 70, guide plate; 80, bottom locking nut; 90, counterweight. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0018] Such as Figure 1As shown in the figure, the present invention provides a gravity valve, comprising: a valve body 10 having a valve cavity, a guide rod 20 with a panel 30 fastened to the top and inserted into the valve cavity. The panel 30 is located above the valve body 10, and the guide rod 20 is supported by the valve body 10 through the panel 30. The guide rod 20 is vertically penetrated through the panel 30. The guide rod 20 is vertically fastened to the panel 30 by an upper locking nut 40 and a lower locking nut 50. The upper locking nut 40 and the lower locking nut 50 are respectively located on the upper and lower sides of the panel 30. A first split pin 21 is also inserted in the radial direction of the guide rod 20. The first split pin 21 is located below the lower locking nut 50 and adjacent to the lower locking nut 50. A first external thread that mates with the upper locking nut 40 and the lower locking nut 50 is formed on the outer circumferential wall surface of the guide rod 20. In this solution, the upper locking nut 40 is provided as a pair, and the number of the lower locking nut 50 is one. The first split pin 21 can effectively prevent the lower locking nut 50 from loosening, thereby avoiding the loosening of the guide rod 20 and the panel 30, and having the advantages of stable and reliable connection and long service life.

[0019] As an embodiment of this solution, as Figure 1 shown, a plurality of counterweight plates 60 are laminated between the upper locking nut 40 and the panel 30 to form a first counterweight.

[0020] As an embodiment of this solution, as Figure 1 shown, the valve body 10 is a columnar body with a hollow interior and openings at both axial ends; wherein, when the pressure inside the valve body 10 is less than or equal to the external pressure, the panel 30 is hermetically abutted against the top opening of the valve body 10, and this state is the reset state of the panel 30; when the pressure inside the valve body 10 is greater than the external pressure, the panel 30 floats upward and disengages from the valve body 10.

[0021] As an embodiment of this solution, as Figure 1 shown, a guide plate 70 parallel to the panel 30 is provided in the valve cavity of the valve body 10. A through hole for the vertical penetration of the guide rod 20 is provided on the guide plate 70. Among them, the transverse cross-section of the guide plate 70 is smaller than the transverse cross-section of the valve cavity, and the transverse cross-section is a plane perpendicular to the axial direction of the valve body 10; in this solution, the number of the guide plates 70 can be one, two or three, and the specific number is determined according to the actual use situation.

[0022] As an embodiment of this solution, as Figure 1 shown, a bottom locking nut 80 and a second split pin 22 are further provided at the bottom of the guide rod 20. The second split pin 22 is located below the bottom locking nut 80 and adjacent to the bottom locking nut 80. The second split pin 22 is inserted in the guide rod 20 along the radial direction of the guide rod 20. Among them, a second external thread that mates with the bottom locking nut 80 is provided on the outer circumferential wall surface of the guide rod 20; in this solution, the bottom locking nut 80 has a limiting function.

[0023] As an embodiment of this solution, as Figure 1 shown, a counterweight 90 is further provided on the guide rod 20. The counterweight 90 is located inside the valve body 10. When the panel 30 falls back and abuts against the top of the valve body 10, the counterweight 90 falls onto the guide plate 70 below it; in this solution, the counterweight 90 is the second counterweight.

[0024] As an embodiment of this solution, as Figure 1 shown, a sealing groove is formed at the top of the valve body 10, and a sealing ring 11 is provided in the sealing groove. The panel 30 abuts against the sealing ring 11 in the reset state, which has the advantage of good sealing effect.

[0025] As an embodiment of this solution, as Figure 1 shown, the value range of the diameter of the guide rod 20 is: 6 - 8 mm.

[0026] As an embodiment of this solution, as Figure 1 shown, the value range of the diameters of the first split pin 21 and the second split pin 22 is: 1 - 2 mm.

[0027] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A gravity valve, comprising: A valve body (10) having a valve cavity, a panel (30) fastened to the top and a guide rod (20) inserted in the valve cavity, the panel (30) being located above the valve body (10), the guide rod (20) being vertically fastened to the panel (30) by an upper locking nut (40) and a lower locking nut (50), the upper locking nut (40) and the lower locking nut (50) being located on the upper and lower sides of the panel (30), respectively, characterized in that the guide rod (20) is further provided with a first cotter pin (21) in its radial direction, the first cotter pin (21) being located below the lower locking nut (50) and adjacent to the lower locking nut (50); The valve body (10) is a column with a hollow interior and two axially open ends; when the pressure inside the valve body (10) is less than or equal to the external pressure, the panel (30) seals against the top opening of the valve body (10); when the pressure inside the valve body (10) is greater than the external pressure, the panel (30) floats upward and separates from the valve body (10); A guide plate (70) parallel to the panel (30) is provided in the valve cavity of the valve body (10), and a through hole for the guide rod (20) to vertically penetrate is provided on the guide plate (70), wherein the transverse cross-section of the guide plate (70) is smaller than the transverse cross-section of the valve cavity, and the transverse cross-section is a plane perpendicular to the axial direction of the valve body (10); The bottom of the guide rod (20) is further provided with a bottom locking nut (80) and a second cotter pin (22), the second cotter pin (22) being located below the bottom locking nut (80) and adjacent to the bottom locking nut (80), and the second cotter pin (22) being inserted into the guide rod (20) along the radial direction of the guide rod (20), wherein a second external thread matching the bottom locking nut (80) is provided on the outer circumferential wall surface of the guide rod (20); the diameters of the first cotter pin (21) and the second cotter pin (22) are in the range of 1 to 2 mm; The upper locking nuts (40) are provided in a pair, and the number of the lower locking nut (50) is one. A counterweight (90) is also provided on the guide rod (20). The counterweight (90) is located in the valve body (10). When the panel (30) falls back and abuts against the top of the valve body (10), the counterweight (90) falls back onto the guide plate (70) below it.

2. The gravity valve according to claim 1, wherein: A first external thread matching the upper locking nut (40) and the lower locking nut (50) is formed on the outer circumferential wall surface of the guide rod (20).

3. The gravity valve according to claim 1, wherein: A plurality of counterweight plates (60) are stacked between the upper locking nut (40) and the panel (30).

4. The gravity valve according to claim 1, wherein: A sealing groove is formed on the top of the valve body (10), a sealing ring (11) is arranged in the sealing groove, and the panel (30) abuts against the sealing ring (11) in the reset state.

5. The gravity valve according to claim 1, wherein: The diameter of the guide rod (20) ranges from 6 to 8 mm.

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