Multi-working-condition intelligent buried gate valve

Abstract

The invention relates to the technical field of buried gate valves, and particularly discloses a multi-working-condition intelligent buried gate valve which comprises a valve body, a valve seat is fixedly connected to the top of the valve body, a protective cover is fixedly connected to the top of the valve seat, a valve rod is rotatably connected to the interior of the protective cover, and a motor is fixedly installed at the top of the valve seat. A filtering assembly and a sealing assembly are arranged in the valve body; when the filter seat is blocked by impurities, under the action of fluid pressure, the filter seat moves towards the flashboard and synchronously drives the movable sleeve, when the filter seat moves to a preset position, the pressure sensing end of the pressure sensor senses pressure change and immediately sends a signal to the cleaning assembly, and after the signal is received, the flashboard in the cleaning assembly drives the cleaning mechanism to move. The cleaning mechanism is used for cleaning the filter seat, blocked impurities are effectively removed, the labor cost and the maintenance workload are reduced, it is ensured that the filter seat is in a good working state all the time, and the fluid filtering effect under different working conditions is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of underground gate valves, and in particular to a multi-working-condition intelligent underground gate valve. Background Art

[0002] A buried gate valve is a valve installed in an underground pipeline system. It is mainly used to control the flow of fluid in the pipeline. Its working principle is to open or close the channel by raising and lowering the gate. When the gate is fully raised, the fluid can pass smoothly; when the gate is lowered, the channel is cut off and the fluid cannot pass.

[0003] During gate valve operation, the fluid media in the pipeline have different properties. When some media contain impurities flowing through the valve body, a filter is often used to filter the fluid to prevent the impurities from adhering to the inner wall of the valve body. Traditional filtering devices are prone to clogging after long-term operation, resulting in a reduction in the flow area of ​​the flow channel and an increase in fluid resistance, which seriously affects the fluid passing capacity. The valve needs to be disassembled as a whole to clean the filter, but the valve disassembly operation is complicated and involves the disassembly of many parts. Disassembly, cleaning and reassembly are time-consuming, which will cause the gate valve to shut down during cleaning, seriously affecting the continuity and timeliness of production operations.

[0004] Therefore, it is necessary to provide a multi-working condition intelligent buried gate valve to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a multi-operating-condition intelligent buried gate valve, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A multi-working-condition intelligent buried gate valve comprises a valve body, a valve seat is fixedly connected to the top of the valve body, a protective cover is fixedly connected to the top of the valve seat, a valve stem is rotatably connected inside the protective cover, a motor is fixedly installed on the top of the valve seat, a filter assembly and a sealing assembly are arranged inside the valve body, a cleaning assembly is arranged inside the valve seat, and a sewage outlet is opened at the bottom of the cleaning assembly; The filter assembly includes a fixed tube symmetrically fixedly connected to the valve body, the interior of the fixed tube is symmetrically fixedly connected to a pressure sensor, the interior of the fixed tube is slidably connected to a filter seat, the outer side of the filter seat is symmetrically fixedly connected to a movable sleeve, a spring is fixedly connected between the movable sleeve and the pressure sensor, the pressure-sensing end of the filter seat is fixedly connected, the sliding sleeve is connected to the interior of the movable sleeve, one end located in the movable sleeve is fixedly connected to a limiting block, and the interior of the filter seat is fixedly connected to a filter screen; The sealing assembly comprises a sealing sleeve, a partition is symmetrically fixedly connected to the inner wall of the valve body, and a limit plate and a sealing plate are fixedly connected to the outer side of the fixed pipe, and the limit plate is located between the sealing sleeve and the sealing plate; The cleaning assembly includes a gate plate slidably connected to the valve seat, a screw rod is symmetrically rotatably connected inside the valve seat, a spiral pair transmission is formed between the gate plate and the screw rod, a cleaning mechanism is symmetrically arranged on the outside of the gate plate, and a clamping mechanism is arranged inside the gate plate.

[0007] As a further improvement of the above scheme, the cleaning mechanism includes a cleaning plate, a connecting plate and a supporting plate, the supporting plates are fixedly connected to the gate plate, the connecting plate is fixedly connected between the cleaning plate and the supporting plate, and an opening is provided at the bottom of the supporting plate.

[0008] As a further improvement of the above scheme, a gear is fixedly connected to the top of each of the two screw rods, and the two gears are meshed with each other. One of the screw rods is fixedly connected to the output end of the motor through a coupling, and the other screw rod is fixedly connected to the valve stem.

[0009] As a further improvement of the above scheme, the sealing assembly also includes a protective seat fixedly connected to the bottom of the valve body, a spring 2 is fixedly connected between the sealing sleeve and the valve body, the bottom of the spring 2 passes through the protective seat, and a top block is fixedly connected to the top of the sealing sleeve.

[0010] As a further improvement of the above solution, the clamping mechanism includes a movable rod slidably connected to the inside of the gate plate, and a clamping block is symmetrically slidably connected to the inside of the gate plate. A connecting rod is rotatably connected between the clamping block and the movable rod.

[0011] As a further improvement of the above solution, a connecting block is symmetrically fixedly connected to the outer side of the movable rod, and a spring three is fixedly connected between the connecting block and the gate plate.

[0012] As a further improvement of the above solution, the top of the gate is fixedly connected to a limit strip, and the top of the clamping block is provided with a sliding groove matched with the limit strip.

[0013] As a further improvement of the above solution, the limit plates are fixedly connected to the partitions, and opposite sides of the two partitions are in contact with the sealing sleeves.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the filter seat is clogged by impurities, the filter seat will be displaced toward the gate under the action of fluid pressure, and the movable sleeve will be driven synchronously. When it moves to the preset position, the pressure sensing end of the pressure sensor senses the pressure change and immediately sends a signal to the cleaning component. After receiving the signal, the gate in the cleaning component drives the cleaning mechanism to move, and the cleaning mechanism is used to clean the filter seat, effectively removing the clogged impurities, reducing labor costs and maintenance workload, ensuring that the filter seat is always in good working condition, and ensuring the fluid filtration effect under different working conditions.

[0015] 2. After the gate and the sealing sleeve are fitted, the gate continues to move downward to discharge impurities through the sewage outlet at the bottom of the valve body. Subsequently, the motor drives the cleaning component to reset, and the filter seat is reset synchronously under the elastic restoring force of spring 1, thereby automatically completing the cleaning of the filter seat, effectively improving the cleaning efficiency and reducing the difficulty of cleaning.

[0016] 3. Through the meshing connection of the gears, the two screws can rotate synchronously to ensure the stable movement of the gate under the drive of the screw. At the same time, the motor and the valve stem are allowed to independently control the gate, so that the gate has a variety of control methods. It can be driven by the motor or driven by the valve stem, realizing the free choice of control methods under different working conditions, which helps to improve the working reliability of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the external structure of the present invention as a whole; Figure 3 It is a schematic diagram of the internal structure of the valve body of the present invention; Figure 4 It is a schematic diagram of the internal structure of the fixed tube of the present invention; Figure 5 It is a schematic diagram of the internal structure of the movable sleeve of the present invention; Figure 6 It is a partial structural schematic diagram of the sealing component and the cleaning component of the present invention; Figure 7 It is a partial structural schematic diagram of the sealing assembly of the present invention; Figure 8 It is a structural schematic diagram of the cleaning state of the cleaning mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the clamping mechanism of the present invention; Fig.10 It is a structural schematic diagram of the cleaning mechanism of the present invention.

[0019] In the figure: 1. valve body; 2. valve seat; 3. protective cover; 4. valve stem; 5. motor; 6. filter assembly; 61. fixed pipe; 62. filter seat; 63. movable sleeve; 64. pressure sensor; 65. spring one; 66. movable rod; 7. sealing assembly; 71. sealing sleeve; 72. partition; 73. protective seat; 74. spring two; 75. limit plate; 76. sealing plate; 77. top block; 8. cleaning assembly; 81. gate; 82. cleaning mechanism; 821. cleaning plate; 822. connecting plate; 823. support plate; 83. gear; 84. screw rod; 85. clamping mechanism; 851. movable rod; 852. connecting block; 853. spring three; 854. connecting rod; 855. clamping block; 856. limit strip; 9. sewage outlet. 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] See also Figures 1 to 10 As shown, the present invention provides an embodiment: A multi-working-condition intelligent buried gate valve comprises a valve body 1, a valve seat 2 is fixedly connected to the top of the valve body 1, a protective cover 3 is fixedly connected to the top of the valve seat 2, a valve stem 4 is rotatably connected inside the protective cover 3, a motor 5 is fixedly installed on the top of the valve seat 2, a filter assembly 6 and a sealing assembly 7 are arranged inside the valve body 1, a cleaning assembly 8 is arranged inside the valve seat 2, and a sewage outlet 9 is provided at the bottom of the cleaning assembly 8; The filter assembly 6 includes a fixed tube 61 symmetrically fixedly connected to the valve body 1, the interior of the fixed tube 61 is symmetrically fixedly connected to a pressure sensor 64, the interior of the fixed tube 61 is slidably connected to a filter seat 62, the outer side of the filter seat 62 is symmetrically fixedly connected to a movable sleeve 63, a spring 65 is fixedly connected between the movable sleeve 63 and the pressure sensor 64, the pressure sensing end of the filter seat 62 is fixedly connected to 66, 66 is slidably connected to the interior of the movable sleeve 63, one end of 66 located in the movable sleeve 63 is fixedly connected to a limited block, and the interior of the filter seat 62 is fixedly connected to a filter screen; The sealing assembly 7 includes a sealing sleeve 71, a partition plate 72 is symmetrically fixedly connected to the inner wall of the valve body 1, and a limit plate 75 and a sealing plate 76 are fixedly connected to the outer side of the fixed tube 61, and the limit plate 75 is located between the sealing sleeve 71 and the sealing plate 76; The cleaning assembly 8 includes a gate plate 81 slidably connected to the valve seat 2, and a screw rod 84 is symmetrically rotatably connected inside the valve seat 2. A spiral pair transmission is formed between the gate plate 81 and the screw rod 84. A cleaning mechanism 82 is symmetrically arranged on the outer side of the gate plate 81, and a clamping mechanism 85 is arranged inside the gate plate 81.

[0022] In practical application, the embodiment of the present invention is as follows: Figure 2 , Figure 4 and Figure 5 As shown, after the fluid enters the valve body 1, it first passes through the filter assembly 6. When the fluid flows through the fixed pipe 61, it needs to be filtered by the filter screen inside the filter seat 62. The filter screen can intercept the impurity particles in the fluid, thereby achieving preliminary purification of the fluid. Under normal working conditions, the filter seat 62 is in the initial position, and its position is maintained by the movable sleeve 63, the pressure sensor 64 and the spring 1 65. The force sensor 64 senses the state of the filter seat 62 through the movable sleeve 63 and the spring 1 65. When the filter seat 62 is blocked by impurities and subjected to fluid pressure, it will slide toward the gate plate 81, driving the movable sleeve 63 to move. As the filter seat 62 moves, the pressure sensing end of the pressure sensor 64 will sense the pressure change. When the filter seat 62 reaches the preset position, the pressure sensor 64 sends the detected pressure signal to the motor 5, and controls the cleaning component 8 through the motor 5; like Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, after receiving the signal, the motor 5 controls the gate plate 81 inside the cleaning assembly 8 to start moving, and a spiral pair transmission is formed between the gate plate 81 and the screw rod 84. The motor 5 drives the gate plate 81 to move by driving the screw rod 84 to rotate. During the movement of the gate plate 81, the cleaning mechanism 82 on its outer side moves accordingly to clean the filter seat 62. During the movement, the gate plate 81 will change its relative position with the sealing sleeve 71, and at the same time, it will work with the limit plate 75 and the sealing plate 76 and other components in the sealing assembly 7 to ensure the sealing performance during the cleaning process and avoid fluid leakage. like Figure 3 , Figure 7 and Figure 8 As shown, after the cleaning mechanism 82 cleans the filter seat 62, the gate plate 81 will continue to move downward after moving to fit with the sealing sleeve 71, and the cleaned impurities will be discharged from the valve body 1 through the sewage outlet 9 opened at the bottom of the cleaning component 8. Subsequently, the motor 5 drives the cleaning component 8 to reset. At the same time, under the elastic action of the spring 65, the filter seat 62 will also return to the initial position to realize the automatic cleaning operation of the filter seat 62. During this process, the clamping mechanism 85 provided inside the gate plate 81 can ensure the stability and reliability of the gate plate 81 in different positions and motion states, and ensure the smooth progress of the entire cleaning process. like Figure 6 , Figure 7 and Figure 8 As shown, the valve stem 4 rotatably connected in the protective cover 3 and the motor 5 installed on the top of the valve seat 2 provide different control methods for the movement of the gate 81. The motor 5 can drive the relevant components to perform automatic control operations, while the valve stem 4 can be used as a manual operation or backup control method; the rotation of the screw rod 84 ensures that the gate 81 moves stably driven by the screw rod 84, and at the same time, the motor 5 and the valve stem 4 can realize separate control of the gate 81 as needed, thereby meeting the control requirements for the movement of the gate 81 under various working conditions.

[0023] like Figure 3 , Figure 6 , Figure 7 , Figure 8 and Fig.10 As shown, the cleaning mechanism 82 includes a cleaning plate 821, a connecting plate 822 and a supporting plate 823. The supporting plate 823 is fixedly connected to the gate plate 81. The connecting plate 822 is fixedly connected between the cleaning plate 821 and the supporting plate 823. An opening is provided at the bottom of the supporting plate 823.

[0024] When the embodiment of the present invention is actually applied, after the motor 5 receives the signal, the gate plate 81 starts to move, driving the support plate 823 fixedly connected thereto, and then driving the cleaning plate 821. The cleaning plate 821 is fixedly connected to the support plate 823 through the connecting plate 822 to ensure that its position is relatively stable. At this time, the cleaning plate 821 will perform a cleaning operation on the filter seat 62. The opening design at the bottom of the support plate 823, on the one hand, reduces the overall weight of the cleaning mechanism 82, and on the other hand, can guide the flow of the fluid during the cleaning process, thereby avoiding serious obstruction of the fluid due to the existence of the cleaning mechanism 82 and achieving the removal of impurities on the filter seat 62.

[0025] like Figure 6 , Figure 7 and Figure 8 As shown, a gear 83 is fixedly connected to the top of each of the two screw rods 84 , and the two gears 83 are meshed with each other. One of the screw rods 84 is fixedly connected to the output end of the motor 5 through a coupling, and the other screw rod 84 is fixedly connected to the valve stem 4 .

[0026] In actual application of the embodiment of the present invention, when the motor 5 is started, the output shaft is transmitted to the screw 84 through the coupling, thereby driving the screw 84 to rotate. Through the meshing transmission, the other screw 84 will also rotate at the same time, and finally drive the gate 81 to perform corresponding actions.

[0027] like Figure 3 , Figure 6 and Figure 8As shown, the sealing assembly 7 also includes a protective seat 73 fixedly connected to the bottom of the valve body 1, a spring 2 74 is fixedly connected between the sealing sleeve 71 and the valve body 1, the bottom of the spring 2 74 passes through the protective seat 73, a top block 77 is fixedly connected to the top of the sealing sleeve 71, and the limit plates 75 are fixedly connected to the partition 72, and the opposite sides of the two partitions 72 are in contact with the sealing sleeve 71.

[0028] When the embodiment of the present invention is actually used, in the initial state, the second spring 74 maintains the position of the sealing sleeve 71 and provides a certain pre-tightening force for the sealing sleeve 71. The opposite sides of the two partitions 72 are both in contact with the sealing sleeve 71, and the limiting plate 75 is fixedly connected to the partition 72, ensuring that the position of the sealing sleeve 71 in the valve body 1 is relatively fixed, playing a sealing and limiting role. The sealing sleeve 71 prevents the fluid from leaking from the contact point between it and the valve body 1 or other components during the operation of the entire valve system, thereby ensuring the sealing performance of the valve. When the fluid pressure in the valve body 1 changes, the second spring 74 can better adapt to different pressure conditions and enhance the sealing effect. The protective seat 73 is fixedly connected to the bottom of the valve body 1, playing a role of protecting and supporting the second spring 74, ensuring the normal operation of the second spring 74, and at the same time providing a certain guarantee for the stability of the overall structure of the sealing assembly 7, avoiding structural damage or position displacement of the sealing assembly 7 due to fluid impact or other external factors.

[0029] like Figure 8 and Fig. 9 As shown, the clamping mechanism 85 includes a movable rod 851 slidably connected to the inside of the gate plate 81, a clamping block 855 is symmetrically slidably connected to the inside of the gate plate 81, a connecting rod 854 is rotatably connected between the clamping block 855 and the movable rod 851, a connecting block 852 is symmetrically fixedly connected to the outside of the movable rod 851, a spring three 853 is fixedly connected between the connecting block 852 and the gate plate 81, a limiting strip 856 is fixedly connected to the top of the gate plate 81, and a sliding groove matched with the limiting strip 856 is provided on the top of the clamping block 855.

[0030] When the embodiment of the present invention is actually used, when the gate plate 81 is driven by the screw rod 84 to fit with the sealing sleeve 71, the movable rod 851 is pushed by the top block 77, so that the movable rod 851 moves upward relative to the gate plate 81, and the spring three 853 is stretched through the connecting block 852, and the clamping block 855 is driven to move outward through the connecting rod 854 to realize the clamping of the gate plate 81 in the sealing sleeve 71, so that the gate plate 81 can drive the sealing sleeve 71 to move synchronously and stably, prevent the gate plate 81 from unnecessary shaking, deviation or detachment, and ensure the stability of the gate plate 81.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-operating-condition intelligent buried gate valve, comprising a valve body (1), the top of the valve body (1) being fixedly connected to a valve seat (2), the top of the valve seat (2) being fixedly connected to a protective cover (3), characterized in that: The protective cover (3) is rotatably connected to a valve stem (4), a motor (5) is fixedly mounted on the top of the valve seat (2), a filter assembly (6) and a sealing assembly (7) are arranged inside the valve body (1), a cleaning assembly (8) is arranged inside the valve seat (2), and a sewage outlet (9) is provided at the bottom of the cleaning assembly (8); The filter assembly (6) comprises a fixed tube (61) symmetrically fixedly connected to the valve body (1); the interior of the fixed tube (61) is symmetrically fixedly connected to a pressure sensor (64); the interior of the fixed tube (61) is slidably connected to a filter seat (62); the outer side of the filter seat (62) is symmetrically fixedly connected to a movable sleeve (63); a spring (65) is fixedly connected between the movable sleeve (63) and the pressure sensor (64); the pressure sensing end of the filter seat (62) is fixedly connected to (66); the (66) is slidably connected to the interior of the movable sleeve (63); one end of the (66) located in the movable sleeve (63) is fixedly connected to a limit block; and the interior of the filter seat (62) is fixedly connected to a filter screen; The sealing assembly (7) comprises a sealing sleeve (71), a partition plate (72) is symmetrically fixedly connected to the inner wall of the valve body (1), and a limit plate (75) and a sealing plate (76) are fixedly connected to the outer side of the fixed tube (61), and the limit plate (75) is located between the sealing sleeve (71) and the sealing plate (76); The cleaning assembly (8) comprises a gate plate (81) slidably connected to the inside of the valve seat (2); a screw rod (84) is symmetrically rotatably connected to the inside of the valve seat (2); a spiral pair transmission is formed between the gate plate (81) and the screw rod (84); a cleaning mechanism (82) is symmetrically arranged on the outside of the gate plate (81); and a clamping mechanism (85) is arranged inside the gate plate (81).

2. According to claim 1, a multi-operating-condition intelligent underground gate valve is characterized in that: The cleaning mechanism (82) comprises a cleaning plate (821), a connecting plate (822) and a supporting plate (823); the supporting plate (823) is fixedly connected to the gate plate (81); the connecting plate (822) is fixedly connected between the cleaning plate (821) and the supporting plate (823); and an opening is provided at the bottom of the supporting plate (823).

3. The multi-operating-condition intelligent buried gate valve according to claim 2 is characterized in that: The tops of the two screw rods (84) are fixedly connected to a gear (83), and the two gears (83) are meshed with each other. One of the screw rods (84) is fixedly connected to the output end of the motor (5) via a coupling, and the other screw rod (84) is fixedly connected to the valve stem (4).

4. The multi-operating-condition intelligent buried gate valve according to claim 2 is characterized in that: The sealing assembly (7) further comprises a protective seat (73) fixedly connected to the bottom of the valve body (1); a second spring (74) is fixedly connected between the sealing sleeve (71) and the valve body (1); the bottom of the second spring (74) passes through the protective seat (73); and a top block (77) is fixedly connected to the top of the sealing sleeve (71).

5. The multi-operating-condition intelligent buried gate valve according to claim 2 is characterized in that: The clamping mechanism (85) comprises a movable rod (851) slidably connected to the interior of the gate plate (81); a clamping block (855) is symmetrically slidably connected to the interior of the gate plate (81); and a connecting rod (854) is rotatably connected between the clamping block (855) and the movable rod (851).

6. The multi-operating-condition intelligent buried gate valve according to claim 5 is characterized in that: A connecting block (852) is symmetrically and fixedly connected to the outer side of the movable rod (851), and a spring three (853) is fixedly connected between the connecting block (852) and the gate plate (81).

7. The multi-operating-condition intelligent buried gate valve according to claim 5, characterized in that: The top of the gate plate (81) is fixedly connected to a limit strip (856), and the top of the clamping block (855) is provided with a sliding groove that matches the limit strip (856).

8. The multi-operating-condition intelligent underground gate valve according to claim 3 is characterized in that: The limiting plates (75) are fixedly connected to the partition plates (72), and opposite sides of the two partition plates (72) are in contact with the sealing sleeves (71).

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