A double-sided sealing gate valve

Abstract

The utility model discloses a double-sided sealing gate valve, which relates to the technical field of gate valves and comprises a fixed shell, wherein an expansion mechanism for bidirectional expansion is arranged at the bottom of the cylinder, and an auxiliary mechanism for shielding and closing a water flow port is arranged on the expansion mechanism. According to the utility model, the cylinder is started to drive the fixed rod to move downward, and the two fixed plates first contact the inner bottom of the fixed shell, the double-ring rod rotates on the shaft column and the cylinder respectively, and changes in angle, and the two fixed plates slide away from each other on the inner wall bottom of the fixed shell, and as the fixed rod contacts the inner wall bottom of the fixed shell, the double-ring rod contacts the limit block in a horizontal state, and the two shielding plates are closely contacted with the sealing strip on the inner wall of the fixed shell, and the T-shaped column slides on the fixed plate, compressing the spring, shielding and closing the two water flow ports, forming two checkpoints, thereby realizing bidirectional water source cutoff, enhancing the stability of water source isolation, and improving the sealing performance, and the structure is simple.

Description

Technical Field

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

[0002] The gate valve is one of the most commonly used shut-off valves. It is mainly used to connect or cut off the medium in the pipeline, not used to adjust the medium flow. The pressure, temperature and diameter range of application are very large, especially for medium and large diameter pipelines. The advantages of the gate valve are small fluid resistance, the medium through hole inside the gate body is straight, and the medium does not change its flow direction when flowing through, so the flow resistance is small, and the medium flow direction is generally not restricted. The medium can flow from any direction on both sides to achieve the purpose of connection or cutoff. It is easy to install and is used in pipelines where the flow direction of the medium may change.

[0003] In the prior art, when the gate valve cuts off the water source, the valve plate is driven downward by the valve stem to slide in the valve seat to block and close the water outlet. However, after long-term use, the friction between the valve plate and the valve seat will cause loss, thereby reducing the fit between the valve plate and the valve seat, creating a gap and reducing the sealing performance.

[0004] For this purpose, a double-sided sealing gate valve is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above background technology, and the utility model provides a double-sided sealing gate valve.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A double-sided sealed gate valve comprises a fixed shell, water flow ports are arranged on both sides of the fixed shell, mounting rings are arranged on both sides of the fixed shell, and the mounting rings correspond to the water flow ports, a circular hole passes through the top of the fixed shell, a cylinder is arranged on the top of the fixed shell, and one end of the cylinder is slidably arranged in the circular hole, an expansion mechanism for bidirectional expansion is arranged at the bottom of the cylinder, and the expansion mechanism is arranged in the fixed shell, and an auxiliary mechanism for shielding and closing the water flow port is arranged on the expansion mechanism.

[0008] Furthermore, the expansion mechanism includes a fixed rod, which is installed at the bottom of the cylinder. Four groups of fixed blocks are installed on the front side of the fixed rod, and one group is set to two. Four shaft columns are installed on the four groups of fixed blocks. Double-ring rods are rotatably installed on the outer walls of the four shaft columns. Cylinders are rotatably installed in the ring mouths of the four double-ring rods away from the shaft columns. Four groups of connecting blocks are installed on the four cylinders, and two fixed plates are installed on the four groups of connecting blocks.

[0009] Furthermore, limit blocks are installed on the four groups of fixed blocks, and the limit blocks are in contact with the double-ring rods.

[0010] Furthermore, the auxiliary mechanism includes four groups of T-shaped columns, which are slidably mounted on the fixed plate, and springs are sleeved on the outer walls of the four groups of T-shaped columns. Two shielding plates are installed on the four groups of T-shaped columns, and the shielding plates are in contact with the fixed shell.

[0011] Furthermore, the four groups of T-shaped columns are respectively arranged at the corners of the two fixed plates and are distributed in a rectangular shape.

[0012] Furthermore, a sealing strip is installed on the inner side wall of the fixed shell close to the water flow outlet, and a corrosion-resistant layer is provided on one side of the two shielding plates close to the water flow outlet.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model starts the cylinder through the arrangement of the cylinder, the fixing plate and the shielding plate, drives the fixing rod to move downward, and the two fixing plates first contact the inner bottom of the fixing shell, the double-ring rod rotates on the shaft column and the cylinder respectively, and changes the angle, and the two fixing plates slide away from each other on the inner wall bottom of the fixing shell, as the fixing rod contacts the inner wall bottom of the fixing shell, the double-ring rod contacts the limit block in a horizontal state, and makes the two shielding plates closely contact the sealing strips on the inner wall of the fixing shell, the T-shaped column slides on the fixing plate, compresses the spring, blocks and closes the two water flow outlets, and forms two checkpoints, thereby realizing two-way water source cutoff, enhancing the stability of water source isolation, and improving the sealing performance, with a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the expansion mechanism and auxiliary mechanism of the utility model;

[0017] Figure 3 It is a schematic diagram of the exploded structure of the expansion mechanism and the auxiliary mechanism of the utility model.

[0018] Figure numerals: 1. fixed shell; 2. water flow outlet; 3. mounting ring; 4. round hole; 5. cylinder; 6. expansion mechanism; 601. fixed rod; 602. fixed block; 603. shaft column; 604. double-ring rod; 605. fixed plate; 606. connecting block; 607. cylinder; 608. limit block; 7. auxiliary mechanism; 701. T-shaped column; 702. spring; 703. shielding plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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] It should be noted that similar reference numerals 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 the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do 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 invention.

[0024] like Figure 1-2As shown, a double-sided sealing gate valve comprises a fixed shell 1, water flow ports 2 are arranged on both sides of the fixed shell 1, mounting rings 3 are arranged on both sides of the fixed shell 1, and the mounting rings 3 correspond to the water flow ports 2, a round hole 4 is penetrated through the top of the fixed shell 1, a cylinder 5 is arranged on the top of the fixed shell 1, and one end of the cylinder 5 is slidably arranged in the round hole 4, an expansion mechanism 6 for bidirectional expansion is arranged at the bottom of the cylinder 5, and the expansion mechanism 6 is arranged in the fixed shell 1, and an auxiliary mechanism 7 for shielding and closing the water flow port 2 is arranged on the expansion mechanism 6. In this embodiment, when using When it is necessary to stop the water source from being cut off, the cylinder 5 is started to drive the expansion mechanism 6 to move downward. When the expansion mechanism 6 contacts the bottom of the inner wall of the fixed shell 1, the expansion mechanism 6 is triggered to expand in both directions, and the auxiliary mechanism 7 is driven to contact the inner wall of the fixed shell 1 to close the two water flow ports 2. Since both water flow ports 2 are closed, the stability of the water source flow cutoff can be improved, and the sealing effect is good. The setting of the mounting ring 3 can facilitate the connection with the pipeline, thereby realizing two-way water source cutoff, enhancing the stability of water source isolation, and improving the sealing.

[0025] like Figure 2-3 As shown, the expansion mechanism 6 includes a fixed rod 601, which is installed at the bottom of the cylinder 5. Four groups of fixed blocks 602 are installed on the front side of the fixed rod 601, and one group is set to two. Four shaft columns 603 are installed on the four groups of fixed blocks 602. Double ring rods 604 are rotatably installed on the outer walls of the four shaft columns 603. Cylinders 607 are rotatably installed in the rings of the four double ring rods 604 away from the shaft columns 603. Four groups of connecting blocks 606 are installed on the four cylinders 607. There are two fixed plates 605. In this embodiment, the cylinder 5 is started to drive the fixed rod 601 to move downward, and the two fixed plates 605 first contact the inner bottom of the fixed shell 1. The double-ring rod 604 rotates on the shaft column 603 and the cylinder 607 respectively, and the angle changes. The two fixed plates 605 slide away from each other on the bottom of the inner wall of the fixed shell 1. As the fixed rod 601 contacts the bottom of the inner wall of the fixed shell 1, the double-ring rod 604 is in a horizontal state, thereby realizing the two-way expansion of the two fixed plates 605.

[0026] like Figure 3 As shown, the limit blocks 608 are installed on the four groups of fixed blocks 602, and the limit blocks 608 are in contact with the double-ring rod 604. In this embodiment, the stability of the double-ring rod 604 in the horizontal state can be further improved through the setting of the fixed blocks 602.

[0027] like Figure 2-3As shown, the auxiliary mechanism 7 includes four groups of T-shaped columns 701, and the T-shaped columns 701 are slidably installed on the fixed plate 605. The outer walls of the four groups of T-shaped columns 701 are sleeved with springs 702. Two baffle plates 703 are installed on the four groups of T-shaped columns 701, and the baffle plates 703 are in contact with the fixed shell 1. In this embodiment, when the two fixed plates 605 move away from each other, the two baffle plates 703 are driven to be in close contact with the inner wall of the fixed shell 1, and the T-shaped columns 701 are driven to slide on the fixed plate 605 and compress the springs 702, thereby realizing the shielding and closure of the two water flow outlets 2, forming two checkpoints, and improving the sealing performance.

[0028] like Figure 3 As shown, four groups of T-shaped columns 701 are respectively arranged at the corners of the two fixed plates 605 and are distributed in a rectangular shape. In this embodiment, the T-shaped columns 701 are arranged in an orientation so that they are evenly stressed, thereby improving the stability of the close contact between the shielding plate 703 and the inner wall of the fixed shell 1.

[0029] like Figure 2-3 As shown, a sealing strip is installed on the inner wall of the fixed shell 1 near the water flow outlet 2, and a corrosion-resistant layer is provided on one side of the two baffle plates 703 near the water flow outlet 2. In this embodiment, through the setting of the sealing strip, when the baffle plates 703 are in close contact with it, the sealing performance can be enhanced to prevent water from flowing in through the gap, and the corrosion-resistant layer is provided on the baffle plates 703 to increase the service life of the baffle plates 703.

[0030] In summary, when in use, when it is necessary to stop the water source from being cut off, the cylinder 5 is started to drive the expansion mechanism 6 to move downward, and when the expansion mechanism 6 contacts the bottom of the inner wall of the fixed shell 1, it will trigger the expansion mechanism 6 to expand in both directions, and drive the auxiliary mechanism 7 to contact the inner wall of the fixed shell 1 to close the two water flow openings 2. Since both water flow openings 2 are closed, the stability of the water source flow cutoff can be improved, and the sealing effect is good. The setting of the mounting ring 3 can be conveniently connected to the pipeline, thereby realizing two-way water source cutoff, enhancing the stability of water source isolation, and improving the sealing. The cylinder 5 is started to drive the fixed rod 601 to move downward, and the two fixed plates 605 first contact the inner bottom of the fixed shell 1, and the double-ring rod 604 rotates on the shaft column 603 and the cylinder 607 respectively, with an angle change, and the two fixed plates 605 slide away from each other on the bottom of the inner wall of the fixed shell 1. As the fixed rod 60 When the double-ring rod 604 contacts the bottom of the inner wall of the fixed shell 1, the double-ring rod 604 is in a horizontal state, thereby realizing the bidirectional expansion of the two fixed plates 605. The setting of the fixed block 602 can further improve the stability of the double-ring rod 604 in a horizontal state. When the two fixed plates 605 move away from each other, the two shielding plates 703 are driven to be in close contact with the inner wall of the fixed shell 1, and the T-shaped column 701 is driven to slide on the fixed plate 605 and compress the spring 702, so as to achieve the shielding and closure of the two water flow outlets 2, forming two checkpoints to improve the sealing performance. The orientation setting of the T-shaped column 701 makes it evenly stressed, thereby improving the stability of the shielding plate 703 in close contact with the inner wall of the fixed shell 1. By setting the sealing strip, when the shielding plate 703 is in close contact with it, the sealing performance can be enhanced to prevent water from flowing in from the gap. The corrosion-resistant layer setting is set on the shielding plate 703 to improve the service life of the shielding plate 703.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A double-sided sealing gate valve, comprising a fixed housing (1), characterized in that: Water flow outlets (2) are provided on both sides of the fixed shell (1), mounting rings (3) are provided on both sides of the fixed shell (1), and the mounting rings (3) correspond to the water flow outlets (2), a round hole (4) is passed through the top of the fixed shell (1), a cylinder (5) is provided on the top of the fixed shell (1), and one end of the cylinder (5) is slidably arranged in the round hole (4), an expansion mechanism (6) for bidirectional expansion is provided at the bottom of the cylinder (5), and the expansion mechanism (6) is arranged in the fixed shell (1), and an auxiliary mechanism (7) for shielding and closing the water flow outlet (2) is provided on the expansion mechanism (6).

2. A double-sided sealing gate valve according to claim 1, characterized in that: The expansion mechanism (6) comprises a fixing rod (601) which is mounted at the bottom of the cylinder (5). Four groups of fixing blocks (602) are mounted on the front side of the fixing rod (601), with each group consisting of two. Four shaft columns (603) are mounted on the four groups of fixing blocks (602). Double ring rods (604) are rotatably mounted on the outer walls of the four shaft columns (603). Cylinders (607) are rotatably mounted in the ring openings of the four double ring rods (604) away from the shaft columns (603). Four groups of connecting blocks (606) are mounted on the four cylinders (607). Two fixing plates (605) are mounted on the four groups of connecting blocks (606).

3. A double-sided sealing gate valve according to claim 2, characterized in that: The four groups of fixed blocks (602) are equipped with limit blocks (608), and the limit blocks (608) are in contact with the double ring rods (604).

4. A double-sided sealing gate valve according to claim 2, characterized in that: The auxiliary mechanism (7) comprises four groups of T-shaped columns (701), the T-shaped columns (701) are slidably mounted on the fixed plate (605), the outer walls of the four groups of T-shaped columns (701) are sleeved with springs (702), and two shielding plates (703) are mounted on the four groups of T-shaped columns (701), and the shielding plates (703) are in contact with the fixed shell (1).

5. A double-sided sealing gate valve according to claim 4, characterized in that: The four groups of T-shaped columns (701) are respectively arranged at the corners of the two fixing plates (605) and are distributed in a rectangular shape.

6. A double-sided sealing gate valve according to claim 4, characterized in that: A sealing strip is installed on the inner side wall of the fixed shell (1) close to the water flow outlet (2), and a corrosion-resistant layer is provided on one side of the two shielding plates (703) close to the water flow outlet (2).

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