Impact-resistant wear-resistant gate valve

Abstract

The invention discloses an impact-resistant and wear-resistant gate valve which comprises a main body assembly, a filtering assembly and an air compression assembly. The main body assembly is used for sealing and assembling the whole gate valve, the stability of the whole gate valve is guaranteed, the filtering assembly is used for blocking and filtering large-particle impurities in liquid flowing through the interior of a pipeline, and the air compression assembly is used for storing continuous pressure on the stamping plate to a certain degree. Through the stamping plate, the filtering holes formed in the stamping plate can accurately filter large-particle impurities in liquid flowing through the pipeline. In the liquid flowing process, large-particle impurities are blocked on one side by the stamping plate and cannot enter a deeper structure in the gate valve. The filtering process effectively protects a sealing piece, a valve element, a valve plate and other key components in the gate valve, component abrasion caused by friction and scraping of large-particle impurities is avoided, and therefore the precision and the sealing performance of the components are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of gate valves, and in particular to an impact-resistant and wear-resistant gate valve. Background Art

[0002] A gate valve is a valve commonly used in pipeline systems. Its main function is to control the flow of fluid. A gate valve is usually composed of a valve body, a valve cover, a valve stem, a valve seat, a gate, etc. Its working principle is to adjust the flow of fluid by raising or lowering the gate. When the gate is raised to the inside of the valve body, the fluid will be blocked, thus achieving a closed state; and when the gate is lowered, the fluid can freely pass through the valve body, achieving an open state.

[0003] The current gate valves are deficient in impact resistance and wear resistance. When subjected to high-speed fluid impact or solid particle scouring, such as when conveying slurry, the valve sealing surface is easily impacted and worn, resulting in valve leakage, affecting the normal operation of the pipeline system, reducing the service life of the valve, and increasing maintenance costs and downtime. Accordingly, the present invention proposes an impact-resistant and wear-resistant gate valve. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an impact-resistant and wear-resistant gate valve.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An impact-resistant and wear-resistant gate valve comprises: a main body component, a filter component and a gas pressure component; The main body assembly is used to seal and assemble the gate valve as a whole to ensure the stability of the gate valve as a whole. The main body assembly includes a pipeline and a valve seat fixedly connected to the pipeline; A chute is provided inside the pipeline, and a buffer component is provided inside the chute for buffering the pressure of the rapid liquid and offsetting the impact; The filter assembly is used to block and filter large particles of impurities in the liquid flowing through the pipeline, and the filter assembly includes a stamping plate slidably arranged inside the slide groove, and the stamping plate is provided with filter holes; The compressed air component is used to store the continuous pressure of the stamping plate to a certain extent. The compressed air component includes an air pump fixedly connected to the inner wall of the slide groove and a built-in warehouse opened inside the pipeline and adjacent to one side of the air pump.

[0006] Preferably, the buffer assembly includes a plurality of springs fixedly connected to the inner wall of a slide groove adjacent to the air pump, a plurality of hydraulic buffers are fixedly connected to the inner wall of the slide groove adjacent to the spring, a pressure block is fixedly connected to one side of the hydraulic buffer, and the spring is fixedly connected to the stamping plate.

[0007] Preferably, the air pump is arranged inside one of the springs, and the starting end of the air pump is fixedly connected to the stamping plate.

[0008] Preferably, an airbag is fixedly connected to the interior of the built-in warehouse, and the airbag is communicated with the air outlet end of the air pump. A pressure relief valve is fixedly connected to the bottom of the built-in warehouse, and the pressure relief valve and the airbag are communicated with each other through an air duct. A pneumatic component for cleaning and scraping large particles of impurities on the surface of the stamping plate is provided at the bottom of the pressure relief valve and inside the pipe.

[0009] Preferably, the pneumatic assembly includes an air jet pipe fixedly connected to the bottom of the pressure relief valve, a fixed box is fixedly connected to the bottom of the air jet pipe, a rotating shaft is rotatably connected inside the fixed box, four fan blades are fixedly connected to the rotating shaft, an exhaust pipe is fixedly connected to the side of the fixed box away from the air jet pipe, a synchronization rod fixedly connected to the rotating shaft on one side of the fixed box, the synchronization rod is slidably and rotatably connected to the stamping plate, a turntable is fixedly connected to the side of the synchronization rod close to the stamping plate, and three cleaning scrapers are fixedly connected to the turntable.

[0010] Preferably, the inlet side of the pipeline is provided with an anti-collision component for buffering the rapidly flowing liquid to offset the impact force, the anti-collision component includes a transmission rod rotatably connected to the inside of the pipeline adjacent to the inlet side, the bottom of the transmission rod is rotatably connected to a ring sleeve rod rotatably connected to the pipeline, a motor is fixedly connected to the top of the pipeline close to the transmission rod, the driving end of the motor is fixedly connected to the transmission rod, a fixing ring is fixedly connected to one side of the pipeline, a first sealing door is fixedly connected to the transmission rod, a second sealing door is fixedly connected to the ring sleeve rod, and a driving component that can synchronously drive the ring sleeve rod to rotate in the opposite direction to the transmission rod is provided inside the ring sleeve rod.

[0011] Preferably, the driving assembly includes a fixed rod fixedly connected to the bottom of the transmission rod and located inside the ring rod, the bottom of the fixed rod is fixedly connected to a first gear, the bottom inside the ring rod is fixedly connected to an internal gear, and a second gear is meshed between the first gear and the internal gear.

[0012] Preferably, the top of the valve seat is fixedly and sealingly connected to a valve cover, the top of the valve cover is threadedly connected to a valve stem, the top of the valve stem is fixedly connected to a handwheel, and the inside of the pipeline is slidably connected to a valve plate that is rotatably connected to the valve stem.

[0013] Preferably, a sewage pipe is fixedly connected to the bottom of the pipeline and located between the fixing ring and the stamping plate.

[0014] The present invention has the following beneficial effects: 1. By setting up a buffer component, multiple springs and multiple hydraulic buffers can cooperate with the stamping plate to effectively buffer the pressure of the rushing liquid and offset the impact. The impact force of the liquid is reduced after passing through the stamping plate, which can effectively reduce the impact force of the liquid on the gate valve, extend the service life of the gate valve, and enable it to operate stably in a high-pressure, large-flow liquid transportation environment.

[0015] 2. By setting up the filter assembly, the stamping plate is slidably set in the slideway inside the pipeline, and the filter holes opened on it can accurately filter large particles of impurities in the liquid flowing through the pipeline. During the flow of liquid, large particles of impurities are blocked on one side by the stamping plate and cannot enter the deeper structure inside the gate valve. This filtering process effectively protects the key components such as the seals, valve core and valve plate inside the gate valve, avoiding the wear of components caused by friction and scratching of large particles of impurities, thereby ensuring the accuracy and sealing performance of these components and reducing the maintenance and replacement costs caused by component damage.

[0016] 3. By setting up the compressed air component, the continuous pressure on the stamping plate can be stored to a certain extent. The stored gas can be used for subsequent pneumatic operations, such as cleaning and scraping impurities on the surface of the stamping plate through the pneumatic component. This not only makes rational use of energy, but also realizes the self-cleaning function of the gate valve, reducing labor maintenance costs and downtime maintenance time.

[0017] 4. By setting up the anti-impact component, the rapid liquid is buffered and offset the impact force at the pipeline inlet side, reducing the impact of the liquid on the inside of the gate valve. When the liquid flows into the pipeline, the first sealing door on the transmission rod and the second sealing door on the ring sleeve rod can adjust the angle under the control of the motor to change the flow channel and flow rate of the liquid, and effectively buffer and offset the impact force of the rapid liquid. In this way, the initial impact energy of the liquid can be dispersed and transformed, avoiding the liquid from directly impacting the sensitive parts inside the gate valve, and reducing the impact load on the overall structure of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of an impact-resistant and wear-resistant gate valve proposed by the present invention; Figure 2 A schematic diagram of the side structure of an impact-resistant and wear-resistant gate valve proposed by the present invention; Figure 3 It is a schematic diagram of the structure of the stamping plate in the present invention; Figure 4 It is a schematic diagram of the structure inside the pipeline in the present invention; Figure 5 It is a structural schematic diagram of the pipeline inlet side in the present invention; Figure 6 It is a schematic diagram of the structure of the anti-collision component in the present invention; Figure 7 It is a schematic diagram of the structure inside the ring sleeve of the present invention; Figure 8 for Figure 4 A is a schematic diagram of the enlarged structure of the middle part; Fig. 9 for Figure 4 A schematic diagram of the enlarged structure of B; Fig.10 for Figure 7 Schematic diagram of the enlarged structure of C in the figure.

[0019] In the figure: 1 pipeline, 2 valve seat, 3 valve cover, 4 valve stem, 5 hand wheel, 6 valve plate, 7 slide groove, 8 spring, 9 hydraulic buffer, 10 pressure block, 11 stamping plate, 12 filter hole, 13 air pump, 14 built-in warehouse, 15 air bag, 16 pressure relief valve, 17 air guide pipe, 18 jet pipe, 19 fixed box, 20 rotating shaft, 21 fan blade, 22 exhaust pipe, 23 synchronization rod, 24 turntable, 25 cleaning scraper, 26 fixed ring, 27 motor, 28 transmission rod, 29 ring sleeve rod, 30 fixed rod, 31 first gear, 32 internal gear, 33 second gear, 34 first sealing door, 35 second sealing door, 36 sewage pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Embodiment 1, refer to Figure 1-Figure 4 and Figure 8 and Fig. 9 , an impact-resistant and wear-resistant gate valve, comprising: a main body component, a filter component and a compressed air component; The main body assembly is used to seal and assemble the gate valve as a whole to ensure the stability of the gate valve as a whole. The main body assembly includes a pipeline 1 and a valve seat 2 fixedly connected to the pipeline 1; A chute 7 is provided inside the pipeline 1, and a buffer component is provided inside the chute 7 for buffering the pressure of the rapid liquid and offsetting the impact; In addition, the buffer assembly includes a plurality of springs 8 fixedly connected to the inner wall of the slide groove 7 near the side of the pump 13, a plurality of hydraulic buffers 9 fixedly connected to the inner wall of the slide groove 7 near the spring 8, a pressure block 10 fixedly connected to one side of the hydraulic buffer 9, and a fixed connection between the spring 8 and the stamping plate 11; The filter assembly is used to block and filter large particles of impurities in the liquid flowing through the pipe 1. The filter assembly includes a stamping plate 11 slidably arranged inside the slide groove 7. The stamping plate 11 is provided with a filter hole 12. A sewage pipe 36 is fixedly connected to the bottom of the pipeline 1 and located between the fixing ring 26 and the stamping plate 11; The compressed air assembly is used to store the continuous pressure of the stamping plate 11 to a certain extent, and the compressed air assembly includes an air pump 13 fixedly connected to the inner wall of the slide groove 7 and a built-in bin 14 opened inside the pipeline 1 and adjacent to one side of the air pump 13; In this embodiment, the stamping plate 11 in the filter assembly is slidably disposed in the slide groove 7 inside the pipe 1, and the filter holes 12 opened thereon can accurately filter impurities from the liquid flowing through the pipe 1. During the flow of the liquid, large particles of impurities are blocked on one side by the stamping plate 11 and cannot enter the deeper structure inside the gate valve. This filtering process effectively protects the key components such as the seals and valve core inside the gate valve, avoiding component wear caused by friction and scratching of large particles of impurities, thereby ensuring the accuracy and sealing performance of these components and reducing the maintenance and replacement costs caused by component damage; Furthermore, a plurality of springs 8 are fixedly connected to the inner wall of the slide groove 7 near the side of the pump 13. When the rapid liquid impacts the stamping plate 11, the spring 8 will be elastically deformed due to the force, and the impact force brought by the liquid will be absorbed and dispersed by its own elastic potential energy, thereby effectively reducing the instantaneous impact pressure on the overall structure of the gate valve; At the same time, the presence of the hydraulic buffer 9 further enhances the impact resistance. The special hydraulic structure inside the hydraulic buffer 9 can convert the kinetic energy generated by the liquid impact into other forms of energy such as heat energy, and steadily reduce the movement speed of the buffer pressure plate through the damping effect, thereby preventing it from shaking violently or being damaged due to sudden force. Moreover, the pressure block 10 connected to one side of the hydraulic buffer 9 can better transfer the impact force evenly to the entire buffer system, making the impact resistance effect more stable and reliable. This buffering method combining the spring 8 with the hydraulic buffer 9 can adapt to liquid impacts of different intensities and frequencies, significantly reduce the damage to the gate valve caused by liquid impact, greatly extend the service life of the gate valve, and ensure its long-term stable operation in harsh working environments.

[0022] Example 2, refer to Figure 2 and Figure 3 and Figure 8 and Fig. 9 Compared with the first embodiment, in this embodiment, the interior of the built-in warehouse 14 is fixedly connected with an airbag 15, the airbag 15 is communicated with the air outlet end of the air pump 13, the bottom of the built-in warehouse 14 is fixedly connected with a pressure relief valve 16, the pressure relief valve 16 and the airbag 15 are communicated with each other through an air guide pipe 17, and a pneumatic component for cleaning and scraping large particles of impurities on the surface of the stamping plate 11 is provided at the bottom of the pressure relief valve 16 and inside the pipeline 1.

[0023] In addition, the air pump 13 is arranged inside one of the springs 8 , and the starting end of the air pump 13 is fixedly connected to the stamping plate 11 .

[0024] The pneumatic assembly includes an air jet pipe 18 fixedly connected to the bottom of the pressure relief valve 16, a fixed box 19 fixedly connected to the bottom of the air jet pipe 18, a rotating shaft 20 rotatably connected inside the fixed box 19, four fan blades 21 fixedly connected to the rotating shaft 20, an exhaust pipe 22 fixedly connected to the side of the fixed box 19 away from the air jet pipe 18, a synchronization rod 23 fixedly connected to the rotating shaft 20 on one side of the fixed box 19, the synchronization rod 23 and the stamping plate 11 are slidably and rotatably connected, a turntable 24 fixedly connected to the side of the synchronization rod 23 close to the stamping plate 11, and three cleaning scrapers 25 fixedly connected to the turntable 24.

[0025] In this embodiment, the air pump 13 in the air pressure assembly is arranged inside a spring 8, and its starting end is fixedly connected to the stamping plate 11. When the liquid impacts the stamping plate 11, the movement of the stamping plate 11 drives the air pump 13 to work, compressing the air and storing it in the air bag 15 in the built-in bin 14 connected to the air outlet of the air pump 13. This design converts the impact force of the liquid into gas pressure and stores it, realizing the effective recovery and utilization of energy.

[0026] Furthermore, the gas stored in the airbag 15 can provide power for the pneumatic assembly when needed. When the pressure in the airbag 15 reaches a certain level, the pressure relief valve 16 opens, and the gas enters the jet pipe 18 in the pneumatic assembly through the air duct 17, thereby driving the fan blades 21 in the fixed box 19 to rotate. The rotation of the fan blades 21 drives the cleaning scraper 25 on the turntable 24 through the synchronization rod 23 to scrape off the large particles of impurities on the surface of the stamping plate 11. This self-cleaning process not only does not require an external power source, reducing energy consumption, but also can maintain the filtering performance of the stamping plate 11 in real time to prevent the accumulation of impurities from affecting the filtering effect. During the long-term liquid transportation process, this pressure storage and utilization mechanism can continuously ensure the normal operation of the gate valve, reduce the frequency of manual intervention and maintenance, and improve the degree of automation and work efficiency of the gate valve.

Claims

1. An impact-resistant and wear-resistant gate valve, comprising a main body component, a filter component and a compressed air component, characterized in that: The main body assembly is used to seal and assemble the gate valve as a whole to ensure the stability of the gate valve as a whole. The main body assembly comprises a pipeline (1) and a valve seat (2) fixedly connected to the pipeline (1); A chute (7) is provided inside the pipeline (1), and a buffer component for buffering the pressure of the rapid liquid and offsetting the impact is arranged inside the chute (7); The filter assembly is used to filter large particles of impurities in the liquid flowing through the pipe (1), and the filter assembly comprises a stamping plate (11) slidably arranged inside the slide groove (7), and the stamping plate (11) is provided with a filter hole (12); The compressed air component is used to store a certain degree of continuous pressure of the punching plate (11), and comprises an air pump (13) fixedly connected to the inner wall of the slide groove (7) and a built-in bin (14) opened inside the pipeline (1) and adjacent to one side of the air pump (13).

2. The impact-resistant and wear-resistant gate valve according to claim 1, characterized in that: The buffer assembly comprises a plurality of springs (8) fixedly connected to the inner wall of a slide groove (7) on a side adjacent to the air pump (13); a plurality of hydraulic buffers (9) are fixedly connected to the inner wall of the slide groove (7) on a side adjacent to the spring (8); a pressure block (10) is fixedly connected to one side of each hydraulic buffer (9); and the spring (8) is fixedly connected to the stamping plate (11).

3. The impact-resistant and wear-resistant gate valve according to claim 1, characterized in that: The air pump (13) is arranged inside one of the springs (8), and a starting end of the air pump (13) is fixedly connected to the stamping plate (11).

4. The impact-resistant and wear-resistant gate valve according to claim 1, characterized in that: An air bag (15) is fixedly connected to the interior of the built-in bin (14), and the air bag (15) is communicated with the air outlet of the air pump (13). A pressure relief valve (16) is fixedly connected to the bottom of the built-in bin (14), and the pressure relief valve (16) and the air bag (15) are communicated with each other via an air guide tube (17). A pneumatic component for cleaning and scraping off large particles of impurities on the surface of the stamping plate (11) is provided at the bottom of the pressure relief valve (16) and located inside the pipeline (1).

5. The impact-resistant and wear-resistant gate valve according to claim 4, characterized in that: The pneumatic assembly comprises an air jet pipe (18) fixedly connected to the bottom of the pressure relief valve (16); a fixed box (19) is fixedly connected to the bottom of the air jet pipe (18); a rotating shaft (20) is rotatably connected to the interior of the fixed box (19); four fan blades (21) are fixedly connected to the rotating shaft (20); an exhaust pipe (22) is fixedly connected to the side of the fixed box (19) away from the air jet pipe (18); a synchronizing rod (23) fixedly connected to the rotating shaft (20) is rotatably connected to one side of the fixed box (19); the synchronizing rod (23) is slidably and rotatably connected to the stamping plate (11); a rotating disk (24) is fixedly connected to the rotating disk (24); and three cleaning scrapers (25) are fixedly connected to the rotating disk (24).

6. The impact-resistant and wear-resistant gate valve according to claim 1, characterized in that: The inlet side of the pipeline (1) is provided with an anti-impact component for buffering and offsetting the impact force of the rapidly flowing liquid. The anti-impact component comprises a transmission rod (28) rotatably connected to the inside of the pipeline (1) adjacent to the inlet side, the bottom of the transmission rod (28) is rotatably connected to a ring rod (29) rotatably connected to the pipeline (1), a motor (27) is fixedly connected to the top of one side of the pipeline (1) close to the transmission rod (28), a driving end of the motor (27) is fixedly connected to the transmission rod (28), a fixing ring (26) is fixedly connected to one side of the pipeline (1), a first sealing door (34) is fixedly connected to the transmission rod (28), a second sealing door (35) is fixedly connected to the ring rod (29), and a driving component is provided inside the ring rod (29) that can synchronously drive the ring rod (29) to rotate in the opposite direction to the transmission rod (28).

7. The impact-resistant and wear-resistant gate valve according to claim 6, characterized in that: The driving assembly comprises a fixing rod (30) fixedly connected to the bottom of the transmission rod (28) and located inside the ring rod (29); a first gear (31) is fixedly connected to the bottom of the fixing rod (30); an internal gear (32) is fixedly connected to the bottom of the ring rod (29); and a second gear (33) is meshed between the first gear (31) and the internal gear (32).

8. The impact-resistant and wear-resistant gate valve according to claim 1, characterized in that: The top of the valve seat (2) is fixedly and sealingly connected to a valve cover (3), the top of the valve cover (3) is threadedly connected to a valve stem (4), the top of the valve stem (4) is fixedly connected to a hand wheel (5), and the interior of the pipeline (1) is slidably connected to a valve plate (6) that is rotatably connected to the valve stem (4).

9. The impact-resistant and wear-resistant gate valve according to claim 1, characterized in that: A sewage discharge pipe (36) is fixedly connected to the bottom of the pipeline (1) and located between the fixing ring (26) and the stamping plate (11).

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