Protection equipment for valve rod of flat gate valve

Abstract

The invention discloses protection equipment for a valve rod of a flat gate valve, and relates to the technical field of flat gate valves. According to the protection equipment for the valve rod of the flat gate valve, through the design of a composite mechanism, a composite shell is arranged on the outer side of the valve rod and covers the valve rod, a sliding block slides on the inner side of a sliding rail, the sliding block drives a grinding column to move from an external shell to the composite shell, the grinding column is driven by a motor to rotate, and the grinding column rubs the surface of the valve rod; on one hand, rust on the surface of the valve rod is removed, the surface of the valve rod is prone to rusting due to the fact that the valve rod is used for a long time, exposed to the sun and soaked in water, and on the other hand, under the condition that the surface of the valve rod is not rusted, impurities or stains on the surface of the valve rod can be rubbed and stripped, and corrosion of the impurities to the valve rod is reduced; and when the motor controls the polishing column to rotate, adaptive operation is carried out when the valve rod ascends and descends, so that the cleaning range of the valve rod is enlarged through rotation of the valve rod.

Description

Technical Field

[0001] The invention relates to the technical field of flat gate valves, in particular to a protective device for a valve stem of a flat gate valve. Background Art

[0002] At present, condensed water appears on the stem stuffing box to the stem nut of the oil pipe flat gate valve. A large amount of condensed water will accumulate over a long period of time. When the temperature is low, the valve stem will freeze and the valve cannot be opened and closed normally, causing equipment failure and inability to operate normally. The long-term accumulation of condensed water will also cause corrosion to the valve body and stuffing box. At present, in the coal chemical industry and open-pit oil production industries, there are connecting valves on the transmission pipelines. Due to production needs, some valves are placed in the open air for a long time. During production, no protective measures are taken. The valve stem is directly exposed to the outside, the valve stem lacks protection, and the valve stem thread is covered with sand and dust, or corroded by rain, dew, frost and snow. In this environment, it will rust over time, making the valve difficult to open and close, and in severe cases, it may even get stuck and cannot be opened.

[0003] At present, after the valve stem has been used for a long time, the valve stem itself is easily affected by external factors, thus affecting the service life of the valve stem. Therefore, a new design has been made to address this situation. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A protective device for a flat gate valve stem, comprising a composite mechanism, a processing mechanism is fixedly connected to the inside of the composite mechanism, and a cleaning mechanism is fixedly connected to one side of the outside of the composite mechanism; The composite mechanism comprises a composite shell, an external shell is fixedly connected to the side of the composite shell away from the cleaning mechanism, a slide rail is fixedly connected to the top of the external shell, a sliding block is slidably connected to the inner side of the slide rail, a motor is fixedly connected to the top of the sliding block, the composite shell is arranged on the outer side of the valve stem to cover the valve stem, the sliding block slides on the inner side of the slide rail, so that the sliding block drives the grinding column to move from the external shell to the composite shell, and the motor drives the grinding column to rotate, so that the grinding column rubs the surface of the valve stem, thereby grinding the surface of the valve stem, on the one hand, removing rust on the surface of the valve stem. After long-term use, the valve stem is exposed to wind, sun and water, which easily causes the surface of the valve stem to rust. On the other hand, if the surface of the valve stem is not rusted, the surface of the valve stem can be polished. Impurities or stains are rubbed off to reduce the corrosion of the valve stem by impurities, thereby extending the service life of the components; the bottom of the sliding block is rotatably connected to a polishing column, and when the motor controls the polishing column to rotate, it adapts to the lifting and lowering of the valve stem, so as to increase the cleaning range of the valve stem through the rotation of the valve stem; the bottom of the polishing column is rotatably connected to a sliding group, and the sliding group moves as the sliding block slides, so as to maintain the balance of the polishing column; the bottom of the composite shell is fixedly connected to an anti-obstruction mechanism, the top of the composite shell is fixedly connected to a protective mechanism, and the inner wall of the composite shell is fixedly connected to the outer side of the processing mechanism near the circular groove, and the debris and impurities generated by friction fall into the inside of the composite shell, and the debris is collected and cleaned by the cleaning mechanism to keep the inside of the equipment clean.

[0005] Preferably, the protective mechanism includes an annular block, and the valve stem is in friction contact with the inner side of the annular block when it is lifted or lowered on the inner wall of the composite shell, so that the stability of the valve stem when it is rotated and lifted is improved through friction, and the valve stem is prevented from falling off when it fails, and the valve stem is prevented from flying off to reduce safety hazards. A strip cutout is provided on the inner side of the annular block, and the friction force on the components is increased by providing the strip cutout and the groove, so as to improve the anti-slip effect on the valve stem and further reduce safety hazards. When the valve stem rotates and rubs against the components, a connecting column is fixedly connected to the outer side of the annular block, and a first spring is sleeved on the outer side of the connecting column, which is shock-absorbing and buffered by the first spring, thereby reducing the amplitude of the component and improving the stability of the component during operation, thereby maintaining stable operation of the equipment, and the bottom of the connecting column is fixedly connected to the top of the composite shell.

[0006] Preferably, the anti-obstruction mechanism includes an anti-obstruction shell, the inner wall of the anti-obstruction shell is fixedly connected with an annular frame, the inner side of the annular frame is fixedly connected with a ring-shaped block, during the daily lifting of the valve stem, it is easy to carry water to cover the valve stem and the inside of the components, resulting in water retention, thereby causing corrosion and pollution to the components, and the valve stem is easy to rust, thereby affecting the service life of the components, when the valve stem rubs inside the anti-obstruction shell, it rubs against the ring-shaped block, the ring-shaped block is made of fiber material, etc., and has good adsorption properties for water, so as to achieve the effect of blocking the entry of water flow and avoiding corrosion of the components by water flow, a semi-arc incision is opened on the outer side of the ring-shaped block, and the deformation range of the components is increased by opening the semi-arc incision and grooving, and the integrity of the components during friction with the valve stem is improved, thereby extending the service life of the components, a drain pipe is fixedly connected to the inclined part of the outer side of the anti-obstruction shell, as the valve stem rubs against the ring-shaped block, the water flow is squeezed out of the ring-shaped block and discharged out from the drain pipe.

[0007] Preferably, the processing mechanism includes a trapezoidal shell, a connecting shaft is fixedly connected between the opposite surfaces of the two trapezoidal shells, and a cylindrical block is fixedly connected to the outer side of the connecting shaft. When the valve stem is rotated and raised inside the composite shell, the cylindrical block rubs against the surface of the valve stem, thereby increasing the cleaning efficiency of the valve stem and improving the degree of cleaning of the valve stem. When the polishing column rubs against the surface of the valve stem, it also frictionally adapts with the surface of the cylindrical block, and cleans impurities on the surface of the polishing column through the cylindrical block, reducing the adsorption of impurities on the surface of the component, avoiding affecting the subsequent friction effect, and keeping the equipment clean, thereby extending the service life of the component. A buffer mechanism is fixedly connected to the middle of one side of the outside of the trapezoidal shell.

[0008] Preferably, the buffer mechanism includes a trapezoidal frame body, and a second spring is fixedly connected to one side outside the trapezoidal frame body. When the grinding column slides on the inner side of the slide rail along with the sliding block, the internal shaft block of the grinding column contacts the buffer plate, and the buffer plate is pressed against the second spring to play a shock-absorbing and buffering role. At the same time, the component is supported by the reaction of the spring structure, thereby achieving a braking effect on the component, avoiding excessive sliding of the component, and providing a certain protective effect on the component. The buffer plate is fixedly connected to the side of the second spring outside away from the trapezoidal frame body.

[0009] Preferably, a silicone block is fixedly connected to the side of the outside of the buffer plate away from the second spring. The silicone block is made of silicone material. The silicone material increases the wear resistance of the components, thereby reducing the wear between the components and extending the service life of the components. Secondly, the silicone material increases the absorption of impact force, thereby increasing the buffering effect. The buffer plate is fixedly connected to a connecting block at the inclined part of one side close to the trapezoidal frame. When the buffer plate moves toward the trapezoidal frame, the connecting block moves toward the trapezoidal frame to keep the components stable. The outer side of the connecting block is slidably connected to the outer side of the trapezoidal frame.

[0010] Preferably, the cleaning mechanism comprises a connecting pipe, an external bracket is fixedly connected to the side of the connecting pipe away from the composite shell, a fan is plugged and connected to the inside of the external bracket, and a rotating mechanism is fixedly connected to the inner wall of the connecting pipe. The fan generates wind force to suck the debris out of the composite shell and move it toward the fan. A pipe can be set outside the external bracket to guide and collect the debris, thereby reducing the debris inside the equipment, keeping the inside of the equipment clean, avoiding excessive accumulation of impurities, and preventing the subsequent equipment operation from being affected.

[0011] Preferably, the rotating mechanism includes a fixed bracket, a central axis is rotatably connected between the opposite surfaces of the two fixed brackets, a diagonal bracket is fixedly connected to the outside of the central axis, a connecting block is fixedly connected to the inside of the diagonal bracket, a U-shaped plate is rotatably connected between the opposite surfaces of the connecting block, a friction column is rotatably connected to the inside of the U-shaped plate, a friction mechanism is fixedly connected to the inside of the U-shaped plate, and a right-angle paddle is fixedly connected to the bottom of the inside of the diagonal bracket. The fan generates wind force to suck the debris out of the composite shell and move it toward the fan. A pipe can be set outside the external bracket to guide and collect the debris, thereby reducing the debris inside the equipment, keeping the inside of the equipment clean, avoiding excessive accumulation of impurities, and preventing the subsequent equipment operation from being affected.

[0012] Preferably, the friction mechanism includes a connecting rod, the outer side of which is fixedly connected with a four-corner block, and a cylindrical rod is fixedly connected between the opposite surfaces of two of the four-corner blocks. The friction column rotates when rubbing against the inner wall of the pipe, and the friction column rotates to frictionally adapt with the cylindrical rod, and the surface of the friction column is scratched by the cylindrical rod, thereby playing a role in cleaning the components, reducing the accumulation of debris, avoiding the accumulation of impurities on the surface of the components, preventing the debris from increasing the wear between the components, and avoiding affecting the service life of the components.

[0013] The present invention provides a protective device for a flat gate valve stem, which has the following beneficial effects: 1. The protective device for the valve stem of a flat gate valve is designed with a composite mechanism. The composite shell is arranged on the outside of the valve stem to cover the valve stem. The sliding block slides on the inside of the slide rail, so that the sliding block drives the grinding column to move from the external shell to the composite shell. The motor drives the grinding column to rotate, so that the grinding column rubs the surface of the valve stem, thereby grinding the surface of the valve stem. On the one hand, rust on the surface of the valve stem is removed. After long-term use, the valve stem is exposed to wind, sun and water, which easily causes rust on the surface of the valve stem. On the other hand, if the surface of the valve stem is not rusted, impurities or stains on the surface of the valve stem can be rubbed and peeled off to reduce the corrosion of the impurities on the valve stem, thereby extending the service life of the components. The sliding group moves with the sliding of the sliding block to maintain the balance of the grinding column. When the motor controls the rotation of the grinding column, it is adapted to the lifting and lowering of the valve stem, so that the cleaning range of the valve stem is increased by rotating the valve stem. The debris and impurities generated by friction fall into the inside of the composite shell, and the debris is collected and cleaned by the cleaning mechanism to keep the inside of the equipment clean.

[0014] 2. The protective equipment for the valve stem of the flat gate valve is designed with an anti-blocking mechanism. During the daily lifting and lowering of the valve stem, it is easy to carry water to cover the inside of the valve stem and components, resulting in water stagnation, which causes corrosion and pollution to the components, and easily causes the valve stem to rust, thus affecting the service life of the components. When the valve stem rubs inside the anti-blocking shell, it rubs against the ring block. The ring block is made of fiber material, etc., which has good adsorption properties for water, thereby achieving the effect of blocking the entry of water and avoiding corrosion of components by water. By opening a semi-arc incision and grooving to increase the deformation range of the components, the integrity of the components during friction with the valve stem is improved, thereby extending the service life of the components. Secondly, as the valve stem rubs against the ring block, the water is squeezed out of the ring block and discharged from the drain pipe.

[0015] 3. The protective device for the valve stem of a flat gate valve is designed with a processing mechanism. When the valve stem rotates and rises and falls inside the composite shell, the cylindrical block rubs against the surface of the valve stem, thereby increasing the cleaning efficiency of the valve stem and improving the degree of cleaning of the valve stem. Secondly, when the grinding column rubs against the surface of the valve stem, it also performs friction adaptation with the surface of the cylindrical block, and the impurities on the surface of the grinding column are cleaned by the cylindrical block, reducing the adsorption of impurities on the surface of the component, avoiding affecting the subsequent friction effect, and keeping the equipment clean, thereby extending the service life of the component.

[0016] 4. The protective device for the valve stem of the flat gate valve is designed with a buffer mechanism. When the grinding column slides on the inner side of the slide rail along with the sliding block, the internal shaft block of the grinding column contacts the buffer plate. The buffer plate is pressed to squeeze the second spring, thereby playing a role of shock absorption and buffering. At the same time, the reaction of the spring structure is used to support the components, thereby achieving a braking effect on the components, avoiding excessive sliding of the components, and having a certain protective effect on the components. The silicone block is made of silicone material, and the silicone material increases the wear resistance of the components, thereby reducing the wear between the components and extending the service life of the components. Secondly, the silicone material increases the absorption of impact force, thereby increasing the buffering effect. When the buffer plate moves toward the trapezoidal frame, the connecting block moves toward the trapezoidal frame to keep the components stable.

[0017] 5. The protection device for the valve stem of the flat gate valve is designed with a protection mechanism. When the valve stem is lifted or lowered on the inner wall of the composite shell, it comes into friction contact with the inner side of the annular block. The friction improves the stability of the valve stem when it is rotated and lifted, avoids the valve stem from falling off when it fails, and prevents the valve stem from flying off to reduce safety hazards. By opening strip incisions and grooves, the friction force on the components is increased, thereby improving the anti-slip effect on the valve stem and further reducing safety hazards. When the valve stem rotates and rubs against the components, the first spring is used for shock absorption and buffering, reducing the amplitude of the components and improving the stability of the components during operation, thereby maintaining stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the protective device for the valve stem of a flat gate valve of the present invention; Figure 2 It is a schematic diagram of the structure of the protection device for the valve stem of the flat gate valve of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the composite mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the protection mechanism of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the anti-blocking mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the processing mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the buffer mechanism of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the cleaning mechanism of the present invention; Fig. 9 It is a schematic diagram of the structure of the rotating mechanism of the present invention; Fig.10 It is a schematic diagram of the friction mechanism structure of the present invention.

[0019] In the figure: 1, composite mechanism; 2, processing mechanism; 3, cleaning mechanism; 11, composite shell; 12, external shell; 13, slide rail; 14, slide block; 15, motor; 16, grinding column; 17, slide group; 18, protection mechanism; 19, anti-resistance mechanism; 181, annular block; 182, connecting column; 183, first spring; 184, strip cutout; 191, anti-resistance shell; 192, annular frame; 193, ring block; 194, semi-arc cutout; 195, drain pipe; 21, trapezoidal shell; 22, connecting shaft; 2 3. Columnar block; 24. Buffer mechanism; 241. Trapezoidal frame; 242. Second spring; 243. Buffer plate; 244. Silicone block; 245. Connecting block; 31. Connecting pipe; 32. External bracket; 33. Fan; 34. Rotating mechanism; 341. Fixed bracket; 342. Central axis; 343. Diagonal bracket; 344. Connecting block; 345. U-shaped plate; 346. Friction mechanism; 347. Friction column; 348. Right-angle paddle; 3461. Connecting rod; 3462. Four-corner block; 3463. Columnar rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a protective device for a flat gate valve stem, comprising a composite mechanism 1, a processing mechanism 2 is fixedly connected to the inside of the composite mechanism 1, and a cleaning mechanism 3 is fixedly connected to one side of the outside of the composite mechanism 1; The composite mechanism 1 includes a composite shell 11, an external shell 12 is fixedly connected to the side of the composite shell 11 away from the cleaning mechanism 3, a slide rail 13 is fixedly connected to the top of the external shell 12, a slide block 14 is slidably connected to the inner side of the slide rail 13, a motor 15 is fixedly connected to the top of the slide block 14, a polishing column 16 is rotatably connected to the bottom of the slide block 14, a slide group 17 is rotatably connected to the bottom of the polishing column 16, an anti-obstruction mechanism 19 is fixedly connected to the bottom of the composite shell 11, a protective mechanism 18 is fixedly connected to the top of the composite shell 11, and the inner wall of the composite shell 11 is fixedly connected to the outer side of the processing mechanism 2 near the circular groove. The composite shell 11 is arranged on the outside of the valve stem to cover the valve stem. The sliding block 14 slides on the inside of the slide rail 13, so that the sliding block 14 drives the grinding column 16 to move from the external shell 12 to the composite shell 11. The motor 15 drives the grinding column 16 to rotate, so that the grinding column 16 rubs the surface of the valve stem, thereby grinding the surface of the valve stem. On the one hand, rust on the surface of the valve stem is removed. After long-term use, the valve stem is exposed to wind, sun and water, which easily causes the surface of the valve stem to rust. On the other hand, if the surface of the valve stem is not rusted, impurities or stains on the surface of the valve stem can be rubbed and peeled off to reduce the corrosion of the impurities on the valve stem, thereby extending the service life of the components. The sliding group 17 moves as the sliding block 14 slides, thereby maintaining the balance of the grinding column 16. When the motor 15 controls the rotation of the grinding column 16, it is adapted to the lifting and lowering of the valve stem, thereby increasing the cleaning range of the valve stem through the rotation of the valve stem, and the debris and impurities generated by friction fall into the inside of the composite shell 11. The debris is collected and cleaned by the cleaning mechanism 3 to keep the inside of the equipment clean.

[0022] The protection mechanism 18 includes an annular block 181, a strip cutout 184 is provided on the inner side of the annular block 181, a connecting column 182 is fixedly connected to the outer side of the annular block 181, a first spring 183 is sleeved on the outer side of the connecting column 182, and the bottom of the connecting column 182 is fixedly connected to the top of the composite shell 11. When the valve stem is raised and lowered on the inner wall of the composite shell 11, it makes frictional contact with the inner side of the annular block 181, and the stability of the valve stem during rotation and lifting is improved by friction, so as to avoid the valve stem from falling off when it fails, and to prevent the valve stem from flying off and reduce safety hazards. By providing the strip cutout 184 and the groove, the friction force on the components is increased, so as to improve the anti-slip effect on the valve stem, and further reduce safety hazards. When the valve stem rotates and rubs against the components, the first spring 183 is used for shock absorption and buffering, so as to reduce the amplitude of the components and improve the stability of the components during operation, thereby maintaining stable operation of the equipment.

[0023] The anti-obstruction mechanism 19 includes an anti-obstruction shell 191, the inner wall of which is fixedly connected to a ring frame 192, the inner side of the ring frame 192 is fixedly connected to a ring block 193, the outer side of the ring block 193 is provided with a semi-arc cutout 194, and a drain pipe 195 is fixedly connected to the inclined part of one side of the outer side of the anti-obstruction shell 191. During the daily lifting of the valve stem, it is easy for water to be carried and cover the inside of the valve stem and components, resulting in water stagnation, thereby causing corrosion and pollution to the components, and easily causing the valve stem to rust, thereby affecting the service life of the components. When the valve stem rubs inside the anti-blocking shell 191, it rubs against the ring block 193. The ring block 193 is made of fiber material, etc., which has good adsorption properties for water, thereby achieving the effect of blocking the entry of water and preventing water from corroding the components. By opening a semi-arc incision 194 and grooving to increase the deformation range of the component, the integrity of the component during friction with the valve stem is improved, thereby extending the service life of the component. Secondly, as the valve stem rubs against the ring block 193, the water is squeezed out of the ring block 193 and discharged from the drain pipe 195.

[0024] The second embodiment is based on the first embodiment. Figure 6 to Figure 7 As shown, the processing mechanism 2 includes a trapezoidal shell 21, a connecting shaft 22 is fixedly connected between the opposite surfaces of the two trapezoidal shells 21, a columnar block 23 is fixedly connected to the outer side of the connecting shaft 22, and a buffer mechanism 24 is fixedly connected to the middle of one side of the outer side of the trapezoidal shell 21. When the valve stem rotates and rises inside the composite shell 11, the columnar block 23 rubs against the surface of the valve stem, thereby increasing the cleaning efficiency of the valve stem and improving the degree of cleaning of the valve stem. Secondly, when the polishing column 16 rubs against the surface of the valve stem, it also rubs against the surface of the columnar block 23, and the impurities on the surface of the polishing column 16 are cleaned by the columnar block 23, reducing the adsorption of impurities on the surface of the component, avoiding affecting the subsequent friction effect, and keeping the equipment clean, thereby extending the service life of the component.

[0025] The buffer mechanism 24 includes a trapezoidal frame 241, a second spring 242 is fixedly connected to one side of the trapezoidal frame 241, and a buffer plate 243 is fixedly connected to one side of the second spring 242 away from the trapezoidal frame 241. When the polishing column 16 slides on the inner side of the slide rail 13 along with the sliding block 14, the internal shaft block of the polishing column 16 contacts the buffer plate 243, and the buffer plate 243 is pressed to squeeze the second spring 242, thereby playing a role of shock absorption and buffering. At the same time, the reaction of the spring structure supports the component, thereby achieving a braking effect on the component, preventing the component from excessive sliding, and playing a certain protective effect on the component.

[0026] A silicone block 244 is fixedly connected to the side of the buffer plate 243 away from the second spring 242, and a connecting block 245 is fixedly connected to the inclined portion of the buffer plate 243 close to the trapezoidal frame 241, and the outer side of the connecting block 245 is slidably connected to the outer side of the trapezoidal frame 241. The silicone block 244 is made of silicone material, and the silicone material increases the wear resistance of the components, thereby reducing the wear between the components and extending the service life of the components. Secondly, the silicone material increases the absorption of impact force, thereby increasing the buffering effect. When the buffer plate 243 moves toward the trapezoidal frame 241, the connecting block 245 moves toward the trapezoidal frame 241, thereby keeping the components stable.

[0027] The third embodiment is based on the first and second embodiments. Figures 8 to 10 As shown, the cleaning mechanism 3 includes a connecting pipe 31, an external bracket 32 ​​is fixedly connected to the side of the connecting pipe 31 away from the composite shell 11, a fan 33 is plugged and connected to the inner side of the external bracket 32, and a rotating mechanism 34 is fixedly connected to the inner wall of the connecting pipe 31. The fan 33 generates wind force to suck the debris out of the composite shell 11 and move it toward the fan 33. A pipe can be set outside the external bracket 32 ​​to guide and collect the debris, thereby reducing the debris inside the equipment, keeping the inside of the equipment clean, avoiding excessive accumulation of impurities, and preventing the subsequent equipment operation from being affected.

[0028] The rotating mechanism 34 includes a fixed bracket 341, a central axis 342 is rotatably connected between the opposite surfaces of the two fixed brackets 341, a diagonal bracket 343 is fixedly connected to the outside of the central axis 342, a connecting block 344 is fixedly connected to the inside of the diagonal bracket 343, a U-shaped plate 345 is rotatably connected between the opposite surfaces of the connecting block 344, a friction column 347 is rotatably connected to the inside of the U-shaped plate 345, a friction mechanism 346 is fixedly connected to the inside of the U-shaped plate 345, and a right-angle paddle 348 is fixedly connected to the bottom of the inside of the diagonal bracket 343. The wind force is generated by the fan 33 and contacts the right-angle paddle 348, thereby driving the components to rotate, so that the friction column 347 rubs against the inner wall of the pipeline, thereby achieving the effect of cleaning the impurities on the inner wall, reducing the accumulation of impurities on the inner wall of the pipeline, and avoiding affecting the flow of air inside the pipeline.

[0029] The friction mechanism 346 includes a connecting rod 3461, a four-corner block 3462 is fixedly connected to the outer side of the connecting rod 3461, and a columnar rod 3463 is fixedly connected between the opposite surfaces of the two four-corner blocks 3462. The friction column 347 rotates when rubbing against the inner wall of the pipe, and the friction column 347 rotates to frictionally adapt to the columnar rod 3463, and the columnar rod 3463 scratches the surface of the friction column 347, thereby playing a role in cleaning the components, reducing the accumulation of debris, avoiding the accumulation of impurities on the surface of the components, preventing the debris from increasing the wear between the components, and avoiding affecting the service life of the components.

[0030] When in use, the valve stem is arranged inside the composite shell 11. When the valve stem rotates and rises and falls, it first contacts the inside of the anti-resistance mechanism 19, and the anti-resistance mechanism 19 absorbs and cleans impurities or water stains on the surface of the valve stem, thereby reducing the entry of impurities into the composite shell 11 and reducing the adsorption of impurities on the surface of the valve stem, slowing down the corrosion of the surface of the valve stem by impurities, thereby extending the service life of the components. The water flow and impurities retained in the anti-resistance mechanism 19 are discharged outwardly from the drain pipe 195, reducing the accumulation of impurities inside the equipment and keeping the interior clean. During the operation of the valve stem, it is frictionally adapted to the surface of the processing mechanism 2, and the processing mechanism 2 is rubbed during the process of the valve stem rotating and rising, thereby rubbing the surface of the valve stem, thereby reducing impurities on the surface of the valve stem and reducing the corrosion of the valve stem by impurities, thereby extending the service life of the valve stem. At the same time, the grinding column 16 inside the composite mechanism 1 slides inside the slide rail 13 through the sliding block 14, driving The grinding column 16 moves toward one side of the valve stem, and the motor 15 drives the grinding column 16 to rotate, thereby grinding the surface of the valve stem. On the one hand, rust on the surface of the valve stem is removed. After long-term use, the valve stem is exposed to wind, sun and water, which can easily cause rust on the surface of the valve stem. On the other hand, if the surface of the valve stem is not rusted, impurities or stains on the surface of the valve stem can be rubbed and peeled off to reduce the corrosion of the impurities on the valve stem, thereby extending the service life of the component. During the rotation of the grinding column 16, it rubs against the columnar block 23 to clean the surface of the grinding column 16, reduce the adsorption of debris on the surface of the component, and prevent the debris from increasing the degree of wear between the components, thereby playing a certain protective effect on the equipment. During the cleaning process, debris and impurities generated are deposited inside the composite shell 11, and the debris inside the composite shell 11 is absorbed and cleaned by the cleaning mechanism 3, thereby reducing the debris trapped inside the composite shell 11 and keeping the inside of the equipment clean.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A protective device for a flat gate valve stem, characterized in that: It comprises a composite mechanism (1), wherein a processing mechanism (2) is fixedly connected to the interior of the composite mechanism (1), and a cleaning mechanism (3) is fixedly connected to one side of the exterior of the composite mechanism (1); The composite mechanism (1) comprises a composite shell (11); an external shell (12) is fixedly connected to the side of the composite shell (11) away from the cleaning mechanism (3); a slide rail (13) is fixedly connected to the top of the external shell (12); a sliding block (14) is slidably connected to the inner side of the slide rail (13); a motor (15) is fixedly connected to the top of the sliding block (14); a grinding column (16) is rotatably connected to the bottom of the sliding block (14); a sliding group (17) is rotatably connected to the bottom of the grinding column (16); an anti-blocking mechanism (19) is fixedly connected to the bottom of the composite shell (11); a protective mechanism (18) is fixedly connected to the top of the composite shell (11); and the inner wall of the composite shell (11) is fixedly connected to the outer side of the processing mechanism (2) near the circular groove.

2. A protective device for a flat gate valve stem according to claim 1, characterized in that: The protection mechanism (18) comprises an annular block (181), the inner side of the annular block (181) is provided with a strip-shaped cutout (184), the outer side of the annular block (181) is fixedly connected with a connecting column (182), the outer side of the connecting column (182) is sleeved with a first spring (183), and the bottom of the connecting column (182) is fixedly connected to the top of the composite shell (11).

3. A protective device for a flat gate valve stem according to claim 1, characterized in that: The anti-blocking mechanism (19) comprises an anti-blocking shell (191), the inner wall of the anti-blocking shell (191) is fixedly connected to an annular frame (192), the inner side of the annular frame (192) is fixedly connected to a ring-shaped block (193), the outer side of the ring-shaped block (193) is provided with a semi-arc cutout (194), and a drainage pipe (195) is fixedly connected to an inclined portion of an outer side of the anti-blocking shell (191).

4. A protective device for a flat gate valve stem according to claim 1, characterized in that: The processing mechanism (2) comprises a trapezoidal shell (21), a connecting shaft (22) being fixedly connected between the opposing surfaces of the two trapezoidal shells (21), a columnar block (23) being fixedly connected to the outside of the connecting shaft (22), and a buffer mechanism (24) being fixedly connected to the middle of one side of the outside of the trapezoidal shell (21).

5. A protective device for a flat gate valve stem according to claim 4, characterized in that: The buffer mechanism (24) comprises a trapezoidal frame (241), a second spring (242) being fixedly connected to one side outside the trapezoidal frame (241), and a buffer plate (243) being fixedly connected to one side outside the second spring (242) away from the trapezoidal frame (241).

6. A protective device for a flat gate valve stem according to claim 5, characterized in that: A silicone block (244) is fixedly connected to the side of the buffer plate (243) away from the second spring (242), and a connecting block (245) is fixedly connected to the inclined portion of the buffer plate (243) close to the trapezoidal frame (241), and the outer side of the connecting block (245) is slidably connected to the outer side of the trapezoidal frame (241).

7. A protection device for a flat gate valve stem according to claim 1, characterized in that: The cleaning mechanism (3) comprises a connecting pipe (31), an external bracket (32) being fixedly connected to the outside of the connecting pipe (31) at a side away from the composite shell (11), a fan (33) being plugged into the inside of the external bracket (32), and a rotating mechanism (34) being fixedly connected to the inner wall of the connecting pipe (31).

8. A protective device for a flat gate valve stem according to claim 7, characterized in that: The rotating mechanism (34) comprises a fixed bracket (341), a central axis (342) is rotatably connected between opposite surfaces of two fixed brackets (341), a diagonal bracket (343) is fixedly connected to the outside of the central axis (342), a connecting block (344) is fixedly connected to the inside of the diagonal bracket (343), a U-shaped plate (345) is rotatably connected between opposite surfaces of the connecting block (344), a friction column (347) is rotatably connected to the inside of the U-shaped plate (345), a friction mechanism (346) is fixedly connected to the inside of the U-shaped plate (345), and a right-angle paddle plate (348) is fixedly connected to the bottom of the inside of the diagonal bracket (343).

9. A protective device for a flat gate valve stem according to claim 8, characterized in that: The friction mechanism (346) comprises a connecting rod (3461), the outer side of the connecting rod (3461) is fixedly connected to a four-corner block (3462), and the opposite surfaces of two of the four-corner blocks (3462) are fixedly connected to a columnar rod (3463).

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