An assembled gate valve

Abstract

The utility model discloses an assembled gate valve belongs to gate valve technical field, including valve seat, is set up with the sliding slot on the valve seat, the inside sliding connection of sliding slot has the sliding block, the top fixed connection of sliding block has the upper end cover, in the utility model, the upper end cover is connected with the valve seat slidingly through the sliding block, forms the upper seal of sliding joint state, and the upper support utilizes the movable assembly, and two L shaped joint plates are connected with the upper end cover, and are fixed through the second bolt, and the magneticity magnetic attraction positioning block of the bottom of upper support is inserted into the positioning groove of the upper end cover and carries out the prepositioning, and the magnetic adsorption guarantees the stability after installation, and the plurality of friction sealing rings of the magnetic attraction positioning block outside further increase the intercalation stability, and the whole detachable structure makes in the gate valve use process, when the damage of certain part appears, only needs to change the damaged part pertinently, need not to change the whole gate valve, has reduced the maintenance cost, has reduced the resource waste.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically an assembled gate valve. Background Technology

[0002] Since its introduction to China in the 1980s, the knife gate valve has rapidly expanded from traditional fields such as mining and power to precision industries such as urban sewage treatment, food processing, and pharmaceutical manufacturing, thanks to its small size, low flow resistance, light weight, and easy disassembly and assembly. This expansion has been driven by the upgrading of industrial pipeline systems towards higher hygiene standards, highly corrosive media, and fluids with solid content.

[0003] Traditional knife gate valves typically consist of a bracket, valve plate, valve seat, valve stem nut, valve stem, handwheel, wear-resistant connecting block, knife gate, and wear-resistant sealing components. The valve body is usually integrally cast, resulting in a fixed structure that cannot be disassembled, making later maintenance and replacement inconvenient. Damage to any part can render the entire gate valve unusable. Furthermore, during use, multiple components are individually connected by threads or integrally cast, especially the exposed valve stem. If the external threads are damaged, the entire valve must be shut down for replacement, which is inconvenient as it cannot be done without shutting down the system. Therefore, an assembled gate valve is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an assembled gate valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an assembled gate valve, including a valve seat, a sliding groove on the valve seat, a slider slidably connected inside the sliding groove, an upper end cover fixedly connected to the top of the slider, sliding cavities inside both the upper end cover and the slider, an upper bracket connected to the upper end cover via a movable component, a valve stem threadedly connected inside the upper bracket, a separating insertion component installed at the bottom of the valve stem, a connecting seat installed outside the separating insertion component, a valve plate fixedly connected to the bottom of the connecting seat, and the valve plate inserted into the interior of the sliding cavity.

[0006] As a further preferred embodiment of this technical solution: the movable component includes two L-shaped snap-fit ​​plates, which are respectively fixedly connected to both sides of the upper bracket. The upper end cover and the L-shaped snap-fit ​​plates are provided with second threaded holes on their exteriors, and second bolts are threaded into the interiors of the second threaded holes.

[0007] As a further preferred embodiment of this technical solution: two positioning grooves are provided on the upper end cover, and a magnetic positioning block is fixedly connected to the bottom of the upper bracket. The magnetic positioning block is inserted into the interior of the positioning groove and is made of magnetic material.

[0008] As a further preferred embodiment of this technical solution: the separate plug-in assembly includes a plug-in hole, the plug-in hole being opened at the top of the connecting seat, the bottom of the valve stem being rotatably connected to a rotating plug-in seat, the rotating plug-in seat being inserted into the interior of the plug-in hole, and both the rotating plug-in seat and the connecting seat having a first threaded hole on their exterior, the interior of the first threaded hole being threaded with a first bolt.

[0009] As a further preferred embodiment of this technical solution: flanges are fixedly connected to both sides of the valve seat.

[0010] As a further preferred embodiment of this technical solution, the magnetic positioning block is externally fixedly connected with multiple friction sealing rings.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the upper end cover is slidably connected to the valve seat via a slider to form an upper seal in a sliding snap-fit ​​state. The upper bracket is snapped to the upper end cover using movable components, namely two L-shaped snap-fit ​​plates, and fixed by a second bolt. At the same time, the magnetic magnetic positioning block at the bottom of the upper bracket is inserted into the positioning groove of the upper end cover for pre-positioning. Magnetic adsorption ensures stability after installation. Multiple friction sealing rings on the outside of the magnetic positioning block further increase the stability of the insertion. The overall detachable structure allows that when a component is damaged during the use of the gate valve, only the damaged component needs to be replaced, without replacing the entire gate valve, thus reducing maintenance costs and minimizing resource waste.

[0013] 2. In this utility model, a detachable plug-in assembly is installed at the bottom of the valve stem, including a rotating plug-in seat and a connecting seat. The rotating plug-in seat is inserted into the plug-in hole at the top of the connecting seat and fixed by a first bolt. When the valve stem is damaged and needs to be replaced, there is no need to stop the machine. Simply remove the first bolt from the first threaded hole on the outside of the rotating plug-in seat and the connecting seat, remove the knob on the valve stem, and continuously rotate the valve stem to move it upward, causing the rotating plug-in seat to separate from the plug-in hole. The valve stem is then completely screwed out of the upper bracket. Then, a new valve stem is replaced by inserting the rotating plug-in seat at the bottom of the new valve stem into the plug-in hole, and then screwing the first bolt back into the two first threaded holes. This completes the individual replacement of the valve stem. This design allows for quick replacement of the valve stem without stopping the machine, significantly shortening maintenance time and improving production efficiency. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of an assembled gate valve according to the present invention;

[0015] Figure 2 This is an exploded structural diagram of an assembled gate valve according to the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of a rotary plug seat in an assembled gate valve according to this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of a magnetic positioning block in an assembled gate valve according to this utility model;

[0018] Figure 5 This is a schematic diagram of the friction sealing ring in an assembled gate valve according to this utility model.

[0019] In the diagram: 1. Valve seat; 2. Flange; 3. Upper end cover; 4. Friction seal ring; 5. Slider; 6. Upper bracket; 7. Valve stem; 8. Connecting seat; 9. Valve plate; 10. Rotary plug-in seat; 11. Plug-in hole; 12. First threaded hole; 13. First bolt; 14. L-shaped snap-fit ​​plate; 15. Second threaded hole; 16. Second bolt; 17. Positioning groove; 18. Magnetic positioning block; 19. Sliding cavity. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Example 1

[0022] Please see Figures 1-5 This utility model provides a technical solution: an assembled gate valve, including a valve seat 1, a sliding groove on the valve seat 1, a slider 5 slidably connected inside the sliding groove, an upper end cover 3 fixedly connected to the top of the slider 5, a sliding cavity 19 being provided inside both the upper end cover 3 and the slider 5, an upper bracket 6 being connected to the upper end cover 3 via a movable component, a valve stem 7 being threadedly connected inside the upper bracket 6, a separation plug-in component being installed at the bottom of the valve stem 7, a connecting seat 8 being installed outside the separation plug-in component, a valve plate 9 being fixedly connected to the bottom of the connecting seat 8, and the valve plate 9 being inserted into the interior of the sliding cavity 19.

[0023] In this embodiment, specifically: during the use of the gate valve, when the gate valve is being installed, the upper end cover 3 can be slidably connected into the interior of the sliding groove via the slider 5. Both the upper end cover 3 and the slider 5 are connected to multiple layers of sealing rings, forming an upper seal in a sliding snap-fit ​​state. When installing components such as the valve stem 7, the connecting seat 8 and the valve plate 9 are inserted into the interior of the sliding cavity 19. At the same time, the upper bracket 6 and the valve stem 7 are installed on top of the upper end cover 3 via the movable component, completing the installation of the upper movable component.

[0024] like Figure 1 As shown, after the overall components are installed, flanges 2 are fixedly connected to both sides of the valve seat 1. External pipelines are connected to flanges 2 through flanges 2, thus completing the connection between the gate valve and the pipeline.

[0025] Example 2

[0026] Considering that during use, once the gate valve is fully connected to the pipeline, if the valve stem 7 is damaged, the traditional gate valve must be closed and the entire unit replaced. To address this technical problem, this application proposes a movable component to solve it, specifically:

[0027] like Figures 1-4 As shown, the active component includes two L-shaped snap-fit ​​plates 14, which are fixedly connected to both sides of the upper bracket 6. The upper end cover 3 and the exterior of the L-shaped snap-fit ​​plates 14 are provided with second threaded holes 15, and the interior of the second threaded holes 15 is threaded with second bolts 16.

[0028] In this embodiment, specifically: during the installation process, the worker can place the upper bracket 6 above the upper cover 3 and snap the two L-shaped snap plates 14 onto both sides of the upper cover 3. At the same time, align the second threaded hole 15 on the outside of the upper cover 3 with the second threaded hole 15 on the outside of the L-shaped snap plate 14 and thread it into the second bolt 16. The upper bracket 6 is fixed to the upper cover 3 by the L-shaped snap plate 14 and the second bolt 16.

[0029] like Figures 2-4 As shown, two positioning slots 17 are provided on the upper cover 3, and a magnetic positioning block 18 is fixedly connected to the bottom of the upper bracket 6. The magnetic positioning block 18 is inserted into the inside of the positioning slot 17 and is made of magnetic material.

[0030] In this embodiment, specifically: when the upper bracket 6 is installed on the outside of the upper cover 3, the magnetic positioning block 18 can also be inserted into the inside of the positioning groove 17 to form a pre-position during the installation process. After the installation is completed, the magnetism generated by the magnetic positioning block 18 will continue to attract the upper cover 3, thereby ensuring the stability of the upper bracket 6 on the outside.

[0031] In this embodiment, specifically: multiple friction sealing rings 4 are fixedly connected to the outside of the magnetic positioning block 18, which increases the stability of the magnetic positioning block 18 when inserted into the positioning groove 17.

[0032] Furthermore, the installation between the L-shaped snap-fit ​​plate 14 and the upper end cover 3 facilitates the replacement and disassembly of the upper bracket 6 and valve stem 7 by the staff, and allows for direct replacement in case of damage to certain parts.

[0033] like Figure 3 As shown, the separate plug-in assembly includes a plug-in hole 11, which is opened on the top of the connecting seat 8. The bottom of the valve stem 7 is rotatably connected to a rotating plug-in seat 10, which is inserted into the inside of the plug-in hole 11. Both the rotating plug-in seat 10 and the connecting seat 8 have a first threaded hole 12 on their exteriors, and a first bolt 13 is threaded into the interior of the first threaded hole 12.

[0034] In this embodiment, specifically: during use, when it is necessary to reinstall and disassemble the valve stem 7, the first bolt 13 located in the first threaded hole 12 on the outside of the rotating plug seat 10 and the connecting seat 8 can be removed. After removing the first bolt 13, the operator can remove the knob on the valve stem 7 and continuously rotate the valve stem 7. During the continuous rotation of the valve stem 7, the valve stem 7 will continuously move upward, thereby causing the rotating plug seat 10 to separate from the plug hole 11. After separation, the valve stem 7 is completely screwed out of the interior of the upper bracket 6. After screwing it out, a new valve stem 7 is replaced, and the rotating plug seat 10 is inserted into the interior of the plug hole 11. The first bolt 13 is screwed back into the interior of the two first threaded holes 12. The removal and installation of the valve stem 7 are completed individually.

[0035] Working principle: When installing the gate valve, the upper end cover 3 is first slidably connected to the sliding groove of the valve seat 1 through the slider 5 with multiple sealing rings to form a sliding snap-fit ​​upper seal. At the same time, the connecting seat 8 and the valve plate 9 are inserted into the sliding cavity 19 inside the upper end cover 3 and the slider 5.

[0036] When installing the upper bracket 6 and valve stem 7, place the upper bracket 6 above the upper end cover 3. Use the magnetic magnetic positioning block 18 at the bottom of the upper bracket 6 to insert into the positioning groove 17 of the upper end cover 3 for pre-positioning. Magnetic adsorption ensures stability after installation, and the magnetic positioning block 18 has multiple friction sealing rings 4 on the outside to increase the insertion stability. Then, snap the L-shaped snap-fit ​​plates 14 on both sides of the upper bracket 6 to both sides of the upper end cover 3, align the second threaded holes 15 on the outside of the upper end cover 3 and the L-shaped snap-fit ​​plates 14 and thread the second bolts 16 to fix the upper bracket 6 on the upper end cover 3.

[0037] After the entire assembly is installed, the external pipeline is connected to the flange 2 on both sides of the valve seat 1 to complete the connection between the gate valve and the pipeline.

[0038] When the valve stem 7 is damaged and needs to be replaced, remove the first bolt 13 from the first threaded hole 12 on the outside of the rotating plug seat 10 and the connecting seat 8, remove the knob on the valve stem 7, and continuously rotate the valve stem 7 to move it upward, causing the rotating plug seat 10 to separate from the plug hole 11 on the top of the connecting seat 8. Screw the valve stem 7 completely out of the upper bracket 6. After replacing the valve stem 7, insert the rotating plug seat 10 at the bottom of the new valve stem 7 into the plug hole 11, and then screw the first bolt 13 back into the two first threaded holes 12 to complete the individual replacement of the valve stem 7. The design of the above-mentioned movable components and the separation plug components makes it convenient for staff to replace and disassemble the upper bracket 6 and the valve stem 7.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembled gate valve, comprising a valve seat (1), characterized in that: The valve seat (1) has a sliding groove, and a slider (5) is slidably connected inside the sliding groove. The top of the slider (5) is fixedly connected to an upper end cover (3). Both the upper end cover (3) and the slider (5) have sliding cavities (19). The upper end cover (3) is connected to an upper bracket (6) through a movable component. The upper bracket (6) is threadedly connected to a valve stem (7). A separation plug-in component is installed at the bottom of the valve stem (7). A connecting seat (8) is installed on the outside of the separation plug-in component. A valve plate (9) is fixedly connected to the bottom of the connecting seat (8). The valve plate (9) is inserted into the sliding cavity (19).

2. The assembled gate valve according to claim 1, characterized in that: The active component includes two L-shaped snap-fit ​​plates (14), which are fixedly connected to both sides of the upper bracket (6). The upper end cover (3) and the L-shaped snap-fit ​​plates (14) are provided with second threaded holes (15) on the outside, and second bolts (16) are threaded into the inside of the second threaded holes (15).

3. The assembled gate valve according to claim 2, characterized in that: Two positioning slots (17) are provided on the upper end cover (3). A magnetic positioning block (18) is fixedly connected to the bottom of the upper bracket (6). The magnetic positioning block (18) is inserted into the positioning slot (17). The magnetic positioning block (18) is made of magnetic material.

4. The assembled gate valve according to claim 3, characterized in that: The separate plug-in assembly includes a plug-in hole (11) which is opened at the top of the connecting seat (8). The bottom of the valve stem (7) is rotatably connected to a rotating plug-in seat (10). The rotating plug-in seat (10) is inserted into the inside of the plug-in hole (11). Both the rotating plug-in seat (10) and the connecting seat (8) are provided with a first threaded hole (12). A first bolt (13) is threaded into the inside of the first threaded hole (12).

5. The assembled gate valve according to claim 1, characterized in that: Flanges (2) are fixedly connected to both sides of the valve seat (1).

6. The assembled gate valve according to claim 4, characterized in that: The magnetic positioning block (18) is externally fixedly connected with multiple friction sealing rings (4).

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