Gate valve

Abstract

A gate valve comprises a valve seat (1), a gate plate (2), a gate plate lifting lead screw (3) and a gate plate locking assembly, sealing grooves (4) are formed in the left side, the right side and one side of the bottom in the valve seat (1), sealing strips (5) are arranged in the sealing grooves (4), inserting blocks (6) matched with the sealing grooves (4) are arranged on the left side, the right side and one side of the bottom of the gate plate (2) respectively, and the gate plate lifting lead screw (3) is installed at the top of the valve seat (1). The flashboard (2) is driven to lift up and down in the valve seat (1); the gate valve has the advantages that the gate plate and the two sides and the top of the valve seat are locked through the gate plate locking assemblies respectively, the gate plate is effectively prevented from deforming, the drain hole is formed in the rear side of the sealing groove in the bottom of the valve seat, gravel in the sealing groove in the bottom of the valve seat can be completely discharged when the gate is opened, and the sealing performance can be improved after the gate plate is closed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a gate valve. Background Art

[0002] The water gate valve is used to intercept the waterway. The existing water gate valve has a simple structure. The gate is deformed due to long-term water pressure and the scouring of sand and gravel when the gate is opened, affecting its sealing performance. At the same time, when the gate is opened, sand and gravel are easily retained in the sealing connection between the valve seat and the bottom of the gate, thereby affecting the sealing performance of the gate after closing. Utility Model Content

[0003] The purpose of the utility model is to provide a gate valve in view of the above-mentioned shortcomings.

[0004] The utility model comprises a valve seat, a gate, a gate lifting screw and a gate locking assembly. The left and right sides of the valve seat and one side of the bottom are provided with sealing grooves, and sealing strips are provided in the sealing grooves. The left and right sides of the gate and one side of the bottom are respectively provided with plug-in blocks matching the sealing grooves. The gate lifting screw is installed on the top of the valve seat and drives the gate to move up and down in the valve seat.

[0005] The gate locking assembly includes a locking rod installed on the upper part of the valve seat and a set of locking plates installed on the left and right sides of the valve seat.

[0006] A set of locking blocks are provided on the locking rod, and a set of locking grooves matching the locking blocks are provided at one end of the top of the gate.

[0007] A group of tightening blocks matching with the locking plate are respectively arranged on the left and right sides of the gate plate.

[0008] A drain hole is provided at the rear side of the sealing groove at the bottom of the valve seat.

[0009] The front side of the gate is an arc-shaped structure with low ends at the upper and lower parts and high in the middle part.

[0010] A set of crisscross reinforcing ribs is provided on the rear side of the gate.

[0011] The locking rod and the valve seat are integrally cast, and triangular ribs are welded between both ends of the locking rod and the valve seat. The locking block is detachably mounted on the locking rod through a set of screws.

[0012] A locking plate positioning groove is provided on the valve seat, and the locking plate is detachably installed in the locking plate positioning groove through a screw.

[0013] A set of top tightening block fixing seats are arranged on the left and right sides of the gate plate, and a top tightening block positioning groove is arranged on the top tightening block fixing seat, and the top tightening block is detachably installed in the top tightening block positioning groove through a screw rod.

[0014] The sealing strip is a metal sealing strip.

[0015] The utility model has the advantages that the gate and the valve seat are locked on both sides and the top by the gate locking assembly, which effectively prevents the gate from deformation; a sewage discharge hole is opened on the rear side of the sealing groove at the bottom of the valve seat, and the sand and gravel in the sealing groove at the bottom of the valve seat can be discharged when the gate is opened, and the sealing performance can be improved after the gate is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the utility model from the first viewing angle.

[0017] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle.

[0018] Figure 3 It is a schematic diagram of the gate structure from the first perspective.

[0019] Figure 4 It is a schematic diagram of the gate structure from the second perspective.

[0020] Figure 5 yes Figure 3 Schematic diagram of the partially enlarged structure.

[0021] Figure 6 It is a schematic diagram of the valve seat structure from the first perspective.

[0022] Figure 7 It is a schematic diagram of the valve seat structure from the second perspective. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", etc. appear in the description of the present utility model, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] As shown in the accompanying drawings, the utility model includes a valve seat 1, a gate 2, a gate lifting screw 3 and a gate locking assembly. The left and right sides of the valve seat 1 and one side of the bottom are provided with sealing grooves 4, and a sealing strip 5 is provided in the sealing groove 4. The left and right sides of the gate 2 and one side of the bottom are respectively provided with plug-in blocks 6 that match the sealing groove 4. The gate lifting screw 3 is installed on the top of the valve seat 1 and drives the gate 2 to rise and fall in the valve seat 1.

[0028] The gate locking assembly includes a locking rod 7 installed on the upper part of the valve seat 1 and a set of locking plates 8 installed on the left and right sides of the valve seat 1.

[0029] A group of locking blocks 9 are arranged on the locking rod 7, and a group of locking grooves 10 matching with the locking blocks 9 are arranged at one end of the top of the gate plate 2.

[0030] A set of tightening blocks 11 cooperating with the locking plate 8 are respectively provided on the left and right sides of the gate plate 2 .

[0031] The gate plate 2 is guided and sealed by the sealing grooves 4 on both sides when it is raised and lowered. After the gate plate 2 is lowered, the top is locked by the locking block 9 and the locking groove 10, and the two sides are locked by the locking plate 8 and the top tightening block 11, which effectively prevents the gate plate 2 from deformation and ensures the sealing effect of the gate plate 2.

[0032] Furthermore, a drain hole 15 is provided at the rear side of the sealing groove 4 at the bottom of the valve seat 1 .

[0033] When the gate is opened to release water, the silt accumulated at the bottom of the gate passes through the valve seat 1. If some of it stays at the bottom of the valve seat 1, the sealing effect will be affected when the gate plate 2 is lowered. A drainage hole 15 is provided on the rear side of the sealing groove 4. When the gate plate 2 is lowered, the water flow can flush the silt staying at the bottom of the valve seat 1 through the drainage hole 15, so that the bottom of the valve seat 1 remains clean and the sealing effect is improved.

[0034] Preferably, the front side of the gate plate 2 is an arc-shaped structure with lower ends and a higher middle portion, that is, the middle portion of the front side of the gate plate 2 protrudes forward, thereby increasing the strength of the middle portion of the gate plate 2.

[0035] A set of crisscross reinforcing ribs 17 is provided at the rear side of the gate plate 2 .

[0036] Furthermore, the locking rod 7 and the valve seat 1 are integrally cast, and triangular ribs 18 are welded between both ends of the locking rod 7 and the valve seat 1 . The locking block 9 is detachably mounted on the locking rod 7 via a set of screws.

[0037] The locking block 9 is provided with an adjusting long hole, and a locking screw is provided in the adjusting long hole. The locking groove 10 is provided with a threaded hole matching the locking screw. After the locking block 9 is inserted into the locking groove 10, it is locked and fixed by the locking screw.

[0038] Furthermore, a locking plate positioning groove is provided on the valve seat 1, and the locking plate 8 is detachably installed in the locking plate positioning groove by means of a screw, so that the installation is quick and stable.

[0039] Furthermore, a set of tightening block fixing seats 20 are provided on both sides of the gate plate 2, and a tightening block positioning groove is provided on the tightening block fixing seat 20, and the tightening block 11 is detachably installed in the tightening block positioning groove by means of a screw.

[0040] Preferably, the sealing strip 5 is a metal sealing strip.

Claims

1. A gate valve, characterized in that It comprises a valve seat (1), a gate plate (2), a gate plate lifting screw rod (3) and a gate plate locking assembly, wherein the left and right sides and one side of the bottom of the valve seat (1) are provided with sealing grooves (4), and a sealing strip (5) is provided in the sealing groove (4), and the left and right sides and one side of the bottom of the gate plate (2) are respectively provided with plug-in blocks (6) matching the sealing grooves (4), and the gate plate lifting screw rod (3) is installed on the top of the valve seat (1) and drives the gate plate (2) to move up and down in the valve seat (1); The gate plate locking assembly comprises a locking rod (7) mounted on the upper part of the valve seat (1) and a group of locking plates (8) mounted on the left and right sides of the valve seat (1); a group of locking blocks (9) are arranged on the locking rod (7); a group of locking grooves (10) matching with the locking blocks (9) are arranged at one end of the top of the gate plate (2); and a group of top tightening blocks (11) matching with the locking plates (8) are respectively arranged on the left and right sides of the gate plate (2).

2. A gate valve according to claim 1, characterized in that A drain hole (15) is provided at the rear side of the sealing groove (4) at the bottom of the valve seat (1).

3. A gate valve according to claim 1, characterized in that The front side of the gate plate (2) is an arc-shaped structure with lower ends and a higher middle portion.

4. A gate valve according to claim 1, characterized in that A group of crisscross reinforcing rib plates (17) are provided on the rear side of the gate plate (2).

5. A gate valve according to claim 1, characterized in that The locking rod (7) and the valve seat (1) are integrally cast, and triangular ribs (18) are welded between both ends of the locking rod (7) and the valve seat (1). The locking block (9) is detachably mounted on the locking rod (7) via a set of screws.

6. A gate valve according to claim 1, characterized in that A locking plate positioning groove is provided on the valve seat (1), and the locking plate (8) is detachably mounted in the locking plate positioning groove via a screw.

7. A gate valve according to claim 1, characterized in that A set of tightening block fixing seats (20) are provided on both left and right sides of the gate plate (2), and a tightening block positioning groove is provided on the tightening block fixing seat (20), and the tightening block (11) is detachably mounted in the tightening block positioning groove by means of a screw rod.

8. A gate valve according to claim 1, characterized in that The sealing strip (5) is a metal sealing strip.

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