Valve with rust-proof valve rod

Abstract

The valve with the rust-proof valve rod comprises a valve body, the valve rod and a lubricating box, the valve rod is arranged at the top of the valve body, an extrusion flange is arranged on the outer side of the lower portion of the valve rod, a rotating cavity is formed in the valve body, and the lubricating box is arranged on the upper portion of the interior of the rotating cavity. The utility model has the following beneficial effects: by arranging the extrusion flange, the push plate, the connecting rod, the pressurizing plate, the reset spring, the lubricating oil cavity and the nozzle, the extrusion flange can extrude the push plate to drive the connecting rod to push the pressurizing plate to move in the pressurizing cavity, so that the air pressure in the pressurizing cavity is increased; by arranging an oil injection port and an oil injection pipe, the lubricating oil can be injected into the lubricating oil cavity through the oil injection port, the lubricating oil can be supplemented in time, and the service life of the valve rod is prolonged; and valve rod damage caused by valve rod rust prevention failure due to insufficient lubricating oil in the lubricating oil cavity is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to a valve with a rust-proof valve stem. Background Art

[0002] The valve stem refers to the main moving part of the valve that runs through the valve body and is used to control the opening or closing of the valve. The valve stem can be connected to the valve's operating handle, motor or other actuator, and the valve opening and closing action is achieved by rotating or moving the valve stem up and down. The valve stem is usually made of metal materials, such as stainless steel, carbon steel, etc., with sufficient strength and corrosion resistance. The diameter and length of the valve stem vary according to the type and size of the valve to meet the load and movement requirements of the valve during operation. Valves are usually installed in various industrial environments, such as chemical plants, marine equipment, sewage treatment, etc. These environments may contain harmful gases, high humidity, chemicals, etc., which can easily cause corrosion and rust of the valve stem. Secondly, valves often need to be opened and closed in industrial production. The frequent movement of the valve stem can easily cause the lubricating layer on the surface of the valve stem to wear, exposing the metal surface and increasing the risk of rust. Therefore, it is hoped that a new structure will be proposed to solve the above problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a valve with a rust-proof valve stem.

[0004] The utility model is realized by the following technical scheme: a valve with a rust-proof valve stem, comprising: a valve body, a valve stem and a lubrication box, wherein the valve stem is arranged on the top of the valve body, an extrusion flange is arranged on the outer side below the valve stem, a rotating cavity is arranged inside the valve body, and a lubrication box is arranged above the rotating cavity;

[0005] An oil filling port is provided on the left side of the top of the valve body, and an oil filling pipe is provided on the left side of the rotating chamber. The lubrication box is divided into an upper part and a lower part. The upper part of the lubrication box is a lubrication oil chamber, and a group of booster chambers are provided on the left and right sides below the lubrication oil chamber.

[0006] The internal structures of the two groups of boost chambers are exactly the same and are arranged in mirror symmetry. A boost plate is provided inside the boost chamber, and return springs are provided at the upper and lower positions on the right side of the boost plate respectively. A connecting rod is provided on the right side of the boost plate, and a push plate is provided on the right side of the connecting rod.

[0007] As a preferred embodiment, a rotating handle is provided at the top of the valve stem, the valve stem extends downward into the rotating chamber, a valve ball is provided below the rotating chamber, and the bottom of the valve stem is fixedly connected to the top of the valve ball.

[0008] As a preferred embodiment, the right side of the connecting rod passes through the right side wall of the boost chamber and is connected and fixed to the left side of the push plate. A sealing ring is provided on the left and right sides of the connection between the connecting rod and the right side wall of the boost chamber, and the right side of the boost plate is connected and fixed to the left side of the connecting rod.

[0009] As a preferred embodiment, the length of the connecting rod is smaller than the length of the boost chamber, the height and width of the boost plate are smaller than the height and width of the boost chamber, and the connecting rod, the boost chamber and the push plate are all made of stainless steel.

[0010] As a preferred embodiment, the left side of the return spring is connected and fixed to the right side of the boost plate, the right side of the return spring is connected and fixed to the right inner wall of the boost chamber, a through hole is opened between the left side of the top of the boost chamber and the left side of the bottom of the oil chamber, and a sealing ring 2 is provided on the top of the through hole.

[0011] As a preferred embodiment, four identical groups of extrusion flanges are provided, and the four groups of extrusion flanges are hemispherical structures. The four groups of extrusion flanges are equidistantly arranged along the outer side below the valve stem, and the four groups of extrusion flanges and the push plate are in the same horizontal plane. In actual use, the air pressure inside the boost chamber increases, and the air pressure inside the lubricating oil chamber is increased through the through hole, so that the lubricating oil inside the lubricating oil chamber is sprayed out to the outside of the valve stem through the nozzle. Since the structures on the left and right sides below the lubrication box are the same and are arranged in a mirror-symmetrical manner, when the left extrusion flange squeezes the left push plate, the right extrusion flange squeezes the right push plate at the same time, so that the left and right groups of nozzles spray lubricating oil to the outside of the valve stem at the same time, so that the outside of the valve stem is wrapped with a layer of lubricating oil film, which can not only prevent rust but also lubricate, thereby extending the service life of the valve stem.

[0012] As a preferred embodiment, lubricating oil is provided inside the lubricating oil chamber, the bottom of the oil filling port is through-connected with the top of the oil filling pipe, the bottom of the oil filling pipe is through-connected with the left side of the lubricating oil chamber, and two groups of nozzles are equidistantly provided on the inside of the lubricating oil chamber. When the lubricating oil inside the lubricating oil chamber is insufficient, the lubricating oil can be injected through the oil filling port, and the lubricating oil passes through the oil filling pipe downward through the oil filling port and flows into the lubricating oil chamber. The injection amount of the lubricating oil can be calculated according to the caliber of the oil filling port and the oil filling pipe, and therefore the injection amount of the lubricating oil can be controlled, so that the lubricating oil inside the lubricating oil chamber can be replenished in time to prevent the lubrication and rust prevention effect from being reduced due to insufficient lubricating oil.

[0013] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by setting an extrusion flange, a push plate, a connecting rod, a boost plate, a return spring, a lubricating oil chamber and a nozzle, the push plate can be extruded by the extrusion flange to drive the connecting rod to push the boost plate to move inside the boost chamber, thereby increasing the air pressure inside the boost chamber, and then the lubricating oil inside the lubricating oil chamber is sprayed onto the outside of the valve stem through the nozzle, thereby forming an oil film on the outside of the valve stem, which lubricates the valve stem and prevents damage caused by rust of the valve stem, thereby extending the service life of the valve stem, and by setting an oil filling port and an oil filling pipe, lubricating oil can be injected into the lubricating oil chamber through the oil filling port, so that the lubricating oil can be replenished in time to prevent the valve stem from failing to prevent rust due to insufficient lubricating oil in the lubricating oil chamber and causing damage to the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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 labor.

[0015] Figure 1 The utility model is a schematic diagram of a valve with a rust-proof valve stem.

[0016] Figure 2 The utility model is a schematic diagram of an oil filling port and an oil filling pipe in a valve with a rust-proof valve stem.

[0017] Figure 3 The utility model is a schematic diagram of the internal structure of a lubrication box in a valve with a rust-proof valve stem.

[0018] Figure 4 The utility model is a structural schematic diagram of an extrusion flange and a push plate in a valve with a rust-proof valve stem.

[0019] In the figure, 100-valve body, 110-valve stem, 120-rotating chamber, 130-oil filling port, 140-oil filling pipe, 150-lubrication box, 160-boosting chamber, 170-boosting plate, 180-connecting rod, 190-push plate, 200-reset spring, 210-lubricating oil chamber, 220-nozzle, 230-extrusion flange. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only one end of the utility model, not the whole end. 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] See also Figures 1 to 4 A valve with a rust-proof valve stem, comprising: a valve body 100, a valve stem 110 and a lubrication box 150, wherein the valve stem 110 is disposed on the top of the valve body 100, an extrusion flange 230 is disposed on the lower outer side of the valve stem 110, a rotating chamber 120 is disposed inside the valve body 100, and a lubrication box 150 is disposed above the rotating chamber 120;

[0022] An oil filling port 130 is provided on the left side of the top of the valve body 100, an oil filling pipe 140 is provided on the left side of the rotating chamber 120, and the lubrication box 150 is divided into an upper part and a lower part. The upper part of the lubrication box 150 is a lubrication oil chamber 210, and a group of booster chambers 160 are provided on the left and right sides below the lubrication oil chamber 210;

[0023] The internal structures of the two groups of boosting chambers 160 are completely identical and are arranged in mirror symmetry. A boosting plate 170 is provided inside the boosting chamber 160. Return springs 200 are provided at the upper and lower positions on the right side of the boosting plate 170 respectively. A connecting rod 180 is provided on the right side of the boosting plate 170. A push plate 190 is provided on the right side of the connecting rod 180.

[0024] A rotating handle is provided on the top of the valve stem 110 , and the valve stem 110 extends downward into the rotating chamber 120 . A valve ball is provided below the rotating chamber 120 , and the bottom of the valve stem 110 is connected and fixed to the top of the valve ball.

[0025] The right side of the connecting rod 180 passes through the right side wall of the boost chamber 160 and is connected and fixed to the left side of the push plate 190. A sealing ring 1 is provided on the left and right sides of the connection between the connecting rod 180 and the right side wall of the boost chamber 160. The right side of the boost plate 170 is connected and fixed to the left side of the connecting rod 180.

[0026] The length of the connecting rod 180 is smaller than that of the boost chamber 160 , the height and width of the boost plate 170 are smaller than those of the boost chamber 160 , and the connecting rod 180 , the boost chamber 160 and the push plate 190 are all made of stainless steel.

[0027] The left side of the return spring 200 is connected and fixed to the right side of the boost plate 170, and the right side of the return spring 200 is connected and fixed to the right inner wall of the boost chamber 160. A through hole is opened between the left side of the top of the boost chamber 160 and the left side of the bottom of the oil chamber, and a sealing ring 2 is provided on the top of the through hole.

[0028] The extrusion flanges 230 are provided with four identical groups. The four groups of extrusion flanges 230 are hemispherical structures. The four groups of extrusion flanges 230 are equidistantly arranged along the outer side of the bottom of the valve stem 110. The four groups of extrusion flanges 230 and the push plate 190 are in the same horizontal plane. In actual use, the air pressure inside the boost chamber 160 increases, and the air pressure inside the lubricating oil chamber 210 is increased through the through hole, so that the lubricating oil inside the lubricating oil chamber 210 is sprayed to the outside of the valve stem 110 through the nozzle 220. Since the structures on the left and right sides below the lubrication box 150 are the same and are arranged in a mirror-symmetrical manner, when the left extrusion flange 230 squeezes the left push plate 190, the right extrusion flange 230 squeezes the right push plate 190 at the same time, so that the left and right groups of nozzles 220 simultaneously spray lubricating oil to the outside of the valve stem 110, so that the outside of the valve stem 110 is wrapped with a layer of lubricating oil film, which can not only prevent rust but also lubricate, thereby extending the service life of the valve stem 110.

[0029] Lubricating oil is provided inside the lubricating oil chamber 210, the bottom of the oil filling port 130 is connected to the top of the oil filling pipe 140, the bottom of the oil filling pipe 140 is connected to the left side of the lubricating oil chamber 210, and two groups of nozzles 220 are equidistantly provided on the inside of the lubricating oil chamber 210. When the lubricating oil inside the lubricating oil chamber 210 is insufficient, the lubricating oil can be injected through the oil filling port 130, and the lubricating oil passes downward through the oil filling pipe 140 through the oil filling port 130 and flows into the lubricating oil chamber 210. The injection amount of the lubricating oil can be calculated according to the caliber of the oil filling port 130 and the oil filling pipe 140, so the injection amount of the lubricating oil can be controlled, so that the lubricating oil inside the lubricating oil chamber 210 can be replenished in time to prevent the lubrication and rust prevention effect from being reduced due to insufficient lubricating oil.

[0030] Example 1: Please refer to Figure 1 , Figure 3 and Figure 4 In actual use, the valve body 100 controls the direction of the valve ball by rotating the valve stem 110, thereby controlling the flow and stop of the fluid. When the valve body 100 is used for a long time, the valve stem 110 is easily corroded on the surface due to long-term rotation and erosion of the fluid. When the valve stem 110 is rotated, the valve stem 110 rotates and drives the four groups of extrusion flanges 230 to rotate. When the extrusion flange 230 rotates to a position opposite to the push plate 190, the extrusion flange 230 squeezes the push plate 190 to the left, causing the push plate 190 to move to the left, and drives the boosting plate 170 to move to the left inside the boosting chamber 160 through the connecting rod 180, so that the air pressure inside the boosting chamber 160 is increased by the leftward movement of the boosting plate 170;

[0031] The air pressure inside the boost chamber 160 increases, and the air pressure inside the lubricating oil chamber 210 increases through the through hole, so that the lubricating oil inside the lubricating oil chamber 210 is sprayed out to the outside of the valve stem 110 through the nozzle 220. Since the structures on the left and right sides below the lubrication box 150 are the same and are arranged in a mirror-symmetrical manner, when the left extrusion flange 230 squeezes the left push plate 190, the right extrusion flange 230 squeezes the right push plate 190 at the same time, so that the left and right groups of nozzles 220 simultaneously spray lubricating oil to the outside of the valve stem 110, so that The outside of the valve stem 110 is wrapped with a layer of lubricating oil film, which not only prevents rust but also acts as a lubricant, thereby extending the service life of the valve stem 110. When the valve stem 110 continues to rotate and the middle parts of the two sets of adjacent extrusion flanges 230 are aligned with the push plate 190, the push plate 190 is no longer squeezed by the extrusion flanges 230, and the two sets of return springs 200 rebound to reset the boost plate 170 and the push plate 190, waiting for the next flange squeezing, and the outside of the valve stem 110 is sprayed with oil for lubrication and rust prevention again, which is simple to operate.

[0032] Example 2: Please refer to Figure 2By opening and closing the valve body 100 once, the rotation angle of the valve stem 110 is calculated, and then the number of times the extrusion flange 230 squeezes the push plate 190 can be inferred. Then, the remaining amount of lubricating oil in the lubricating oil chamber 210 can be inferred through the one-time oil injection amount of the nozzle 220. Therefore, when it is calculated that the lubricating oil in the lubricating oil chamber 210 is insufficient, the lubricating oil can be injected through the oil filling port 130. The lubricating oil passes downward through the oil filling pipe 140 through the oil filling port 130 and flows into the lubricating oil chamber 210. The injection amount of the lubricating oil can be inferred according to the diameter of the oil filling port 130 and the oil filling pipe 140. Therefore, the injection amount of the lubricating oil can be controlled, so that the lubricating oil in the lubricating oil chamber 210 can be replenished in time to prevent the lubrication and rust prevention effect from being reduced due to insufficient lubricating oil.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve with a rust-proof valve stem, comprising: A valve body (100), a valve stem (110) and a lubrication box (150), characterized in that: a valve stem (110) is provided at the top of the valve body (100), an extrusion flange (230) is provided on the lower outer side of the valve stem (110), a rotating chamber (120) is provided inside the valve body (100), and a lubrication box (150) is provided above the rotating chamber (120); An oil filling port (130) is provided on the left side of the top of the valve body (100); an oil filling pipe (140) is provided on the left side inside the rotating chamber (120); the lubrication box (150) is divided into an upper part and a lower part; the upper part of the lubrication box (150) is a lubrication oil chamber (210); and a group of boosting chambers (160) are provided on the left and right sides below the lubrication oil chamber (210); The internal structures of the two groups of boost chambers (160) are completely identical and are arranged in a mirror-symmetrical manner. A boost plate (170) is provided inside the boost chamber (160). Return springs (200) are provided at upper and lower positions on the right side of the boost plate (170). A connecting rod (180) is provided on the right side of the boost plate (170). A push plate (190) is provided on the right side of the connecting rod (180).

2. A valve with a rust-proof valve stem as claimed in claim 1, characterized in that: A rotating handle is provided at the top of the valve stem (110), and the valve stem (110) extends downward into the interior of the rotating chamber (120). A valve ball is provided below the interior of the rotating chamber (120), and the bottom of the valve stem (110) is connected and fixed to the top of the valve ball.

3. A valve with a rust-proof valve stem as claimed in claim 1, characterized in that: The right side of the connecting rod (180) passes through the right side wall of the boost chamber (160) and is connected and fixed to the left side of the push plate (190). A sealing ring is provided on the left and right sides of the point where the connecting rod (180) passes through the right side wall of the boost chamber (160). The right side of the boost plate (170) is connected and fixed to the left side of the connecting rod (180).

4. A valve with a rust-proof valve stem as claimed in claim 3, characterized in that: The length of the connecting rod (180) is smaller than the length of the boost chamber (160), the height and width of the boost plate (170) are smaller than the height and width of the boost chamber (160), and the connecting rod (180), the boost chamber (160) and the push plate (190) are all made of stainless steel.

5. A valve with a rust-proof valve stem as claimed in claim 1, characterized in that: The left side of the return spring (200) is connected and fixed to the right side of the boost plate (170), and the right side of the return spring (200) is connected and fixed to the right inner wall of the boost chamber (160). A through hole is provided on the left side of the top of the boost chamber (160) and the left side of the bottom of the oil chamber, and a second sealing ring is provided on the top of the through hole.

6. A valve with a rust-proof valve stem as claimed in claim 1, characterized in that: The extrusion flanges (230) are provided in four identical groups. The four groups of the extrusion flanges (230) are hemispherical structures. The four groups of the extrusion flanges (230) are equidistantly arranged along the outer side below the valve stem (110). The four groups of the extrusion flanges (230) and the push plate (190) are in the same horizontal plane.

7. A valve with a rust-proof valve stem as claimed in claim 1, characterized in that: Lubricating oil is provided inside the lubricating oil chamber (210), the bottom of the oil filling port (130) is connected to the top of the oil filling pipe (140), the bottom of the oil filling pipe (140) is connected to the left side of the lubricating oil chamber (210), and two groups of nozzles (220) are equidistantly provided inside the lubricating oil chamber (210).

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