Groove type signal gate valve

Abstract

The utility model relates to the field of gate valves, in particular to a groove type signal gate valve. According to the groove type signal gate valve, the main abrasion position of a gate plate can be detached and replaced, the whole gate plate does not need to be replaced, the usability of the gate valve is improved, and material waste is reduced. A groove type signal gate valve comprises a valve body, a valve cover, an installation frame, a valve rod, a valve rod nut, a gland, a sealing cover, padding, a gate plate, a hand wheel, a sealing seat ring, a main plate body, a sealing plate and a locking screw. The gate valve achieves the effects that the main abrasion position of the gate plate is detached and replaced, the whole gate plate does not need to be replaced, the usability of the gate valve is improved, and material waste is reduced.

Description

Technical Field

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

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest stop valves to the various valves used in extremely complex automatic control systems. Gate valves are one of the many pipeline valves, mainly used to control the forced flow stop of liquid media in pipelines and are widely used. The opening and closing parts of the gate valve are the gate disc, and the movement direction of the gate disc is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.

[0003] The signal gate valve is also called a rising stem gate valve. The opening and closing of the gate valve can be determined by the lifting signal of the valve stem. The gate of the existing gate valve mostly adopts a wedge structure, and the outer surface is lined with elastic rubber as a whole; the gate can be stretched and squeezed, thereby achieving a good sealing effect; but the gate is lined with elastic rubber as a whole. After long-term use, the rubber loses its elasticity, resulting in poor sealing effect. When the valve leaks, the valve needs to be disassembled to replace the entire gate, which is difficult to repair and can only be replaced with a new gate, resulting in increased maintenance costs; poor use effect, serious material waste; therefore, it is urgent to develop a grooved signal gate valve that can disassemble and replace the main wear position of the gate without replacing the entire gate, thereby improving the usability of the gate valve and reducing material waste. Utility Model Content

[0004] In order to overcome the shortcomings of the existing gate valve that the gate plate is entirely lined with elastic rubber, the rubber needs to be replaced as a whole after losing its elasticity after long-term use, which is difficult to repair and can only be replaced with a new gate plate, resulting in increased maintenance costs and poor use effect. The technical problem to be solved by the utility model is to provide a grooved signal gate valve that can disassemble and replace the main wear positions of the gate plate without replacing the entire gate plate, thereby improving the usability of the gate valve and reducing material waste.

[0005] The utility model is achieved by the following specific technical means:

[0006] A grooved signal gate valve comprises a valve body; a valve cover fixedly connected to the upper end of the valve body; a mounting frame fixedly connected to the upper end of the valve cover; a valve stem nut fixedly arranged on the mounting frame; a valve stem rotatably mounted on the valve body and the valve cover through the valve stem nut; a gland and a sealing cover are fixedly arranged at the connection between the valve stem and the valve cover; a packing is fixedly arranged between the gland and the sealing cover; a gate is fixedly connected to the lower end of the valve stem; a hand wheel is fixedly connected to the upper end of the valve stem; a sealing seat ring that cooperates with the gate to seal is fixedly arranged in the valve body;

[0007] The gate plate is a detachable split gate plate, including a main board body connected to the lower end of the valve stem, and a connecting groove for connecting to the valve stem is arranged on the upper side of the main board body; sealing plates for sealing with the sealing seat ring are fixedly connected on both side surfaces of the main board body by locking screws.

[0008] Furthermore, the outer surface of the sealing plate is coated with an elastic rubber layer, so that the sealing plate and the sealing seat ring are sealed by contact with the elastic rubber layer, and the elastic rubber layer is subjected to a slight elastic deformation to improve the sealing effect and ensure reliable sealing.

[0009] Furthermore, first grooves are provided on both side end surfaces of the main board body, and correspondingly, second grooves are provided on the sealing plates on both sides that cooperate with the first grooves provided on the main board body; the first grooves and the second grooves are provided to limit the sealing plates, thereby preventing the sealing plates from moving, and making the seal more tightly connected to the main board body.

[0010] Furthermore, a threaded hole is provided in the first groove of the main board body, and the locking screw passes through the sealing plate and is connected to the threaded hole in the first groove; the locking screw is located in the second groove of the sealing plate to prevent affecting the sealing of the sealing plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model can dismantle and replace the main worn positions of the gate plate without replacing the entire gate plate, thereby improving the usability of the gate valve and reducing material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the half-section structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the gate of the utility model.

[0015] Figure 3 It is an exploded view of the gate of the utility model.

[0016] The marks in the accompanying drawings are: 1-valve body, 2-valve cover, 3-mounting frame, 4-valve stem, 5-valve stem nut, 6-pressure cover, 7-sealing cover, 8-packing, 9-gate, 10-handwheel, 11-sealing seat ring, 91-main body, 92-sealing plate, 93-locking screw, 911-connecting groove, 912-first groove, 921-elastic rubber layer, 922-second groove. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings: Example

[0018] A grooved signal gate valve, such as Figure 1-3 As shown, it includes a valve body 1; a valve cover 2 fixedly connected to the upper end of the valve body 1; a mounting frame 3 fixedly connected to the upper end of the valve cover 2; a valve stem nut 5 fixedly arranged on the mounting frame 3; a valve stem 4 rotatably mounted on the valve body 1 and the valve cover 2 through the valve stem nut 5; a gland 6 and a sealing cover 7 are also fixedly arranged at the connection between the valve stem 4 and the valve cover 2; a packing 8 is fixedly arranged between the gland 6 and the sealing cover 7; a gate plate 9 is fixedly connected to the lower end of the valve stem 4; a hand wheel 10 is fixedly connected to the upper end of the valve stem 4; a sealing seat ring 11 that cooperates with the gate plate 9 for sealing is fixedly arranged in the valve body 1;

[0019] The gate plate 9 is a detachable split gate plate 9, including a main board body 91 connected to the lower end of the valve stem 4, and a connecting groove 911 for connecting to the valve stem 4 is provided on the upper side of the main board body 91; sealing plates 92 for sealing with the sealing seat ring 11 are fixedly connected on both side surfaces of the main board body 91 by locking screws 93.

[0020] Working principle:

[0021] The gate plate 9 of the gate valve of the present invention is a detachable split gate plate 9, including a main board body 91 connected to the lower end of the valve stem 4; a sealing plate 92 fixedly connected to both sides of the main board body 91 by locking screws 93, and used to seal with the sealing seat ring 11; the outer surface of the sealing plate 92 is coated with an elastic rubber layer 921, so that the gate plate 9 does not need to be entirely coated with the elastic rubber layer 921, and only the sealing plates 92 on both sides of the fixed main board body 91 for sealing with the sealing seat ring 11 need to be coated with the elastic rubber layer 921, thereby reducing the amount of elastic rubber used and reducing production costs; the sealing plate 92 coated with the elastic rubber layer 921 is fixedly locked and connected to the main board body 91 by screws. After long-term use, the elastic rubber layer 921 coated on the outer side of the sealing plate 92 is worn, resulting in reduced sealing. When leakage occurs, the gate plate 9 can be taken out and the sealing plates 92 on both sides of the main board body 91 of the gate plate 9 can be replaced. There is no need to replace the entire gate plate 9, thereby improving the usability of the gate valve and reducing material waste.

[0022] Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.

Claims

1. A grooved signal gate valve, comprising a valve body (1); a valve cover (2) fixedly connected to the upper end of the valve body (1); a mounting frame (3) fixedly connected to the upper end of the valve cover (2); a valve stem nut (5) fixedly arranged on the mounting frame (3); a valve stem (4) rotatably mounted on the valve body (1) and the valve cover (2) through the valve stem nut (5); a gland (6) and a sealing cover (7) fixedly arranged at the connection between the valve stem (4) and the valve cover (2); a packing (8) fixedly arranged between the gland (6) and the sealing cover (7); a gate plate (9) fixedly connected to the lower end of the valve stem (4); a hand wheel (10) fixedly connected to the upper end of the valve stem (4); a sealing seat ring (11) fixedly arranged in the valve body (1) and cooperating with the gate plate (9) for sealing; It is characterized in that The gate plate (9) is a detachable split gate plate (9), comprising a main plate body (91) connected to the lower end of the valve stem (4), and a connecting groove (911) for connecting to the valve stem (4) is provided on the upper side of the main plate body (91); sealing plates (92) for sealingly cooperating with the sealing seat ring (11) are fixedly connected to both side surfaces of the main plate body (91) by locking screws (93).

2. A grooved signal gate valve according to claim 1, characterized in that: The outer surface of the sealing plate (92) is coated with an elastic rubber layer (921).

3. A grooved signal gate valve according to claim 1, characterized in that: The end surfaces of both sides of the main body (91) are provided with first grooves (912), and the corresponding sealing plates (92) on both sides are provided with second grooves (922) that match the first grooves (912) provided on the main body (91).

4. A grooved signal gate valve according to claim 3, characterized in that: A threaded hole is provided in the first groove (912) provided in the main plate body (91), and a locking screw (93) passes through the sealing plate (92) and is connected to the threaded hole in the first groove (912).

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