Bar valve

Abstract

A bar valve comprises a valve body (1), a valve clack (2) and a lead screw lifting mechanism (3), connecting flanges are arranged at the inlet end and the outlet end of the valve body (1) respectively, a cross beam (4) is arranged in the middle of the valve body (1), a set of rod penetrating holes are formed in the cross beam (4), a set of blocking bars (5) are sequentially arranged at the bottom of the valve clack (2), and the blocking bars (5) are located in the corresponding rod penetrating holes. The valve has the advantages that the screw rod lifting mechanism drives the valve clack to lift, the adjusting speed is high, and an air source is not needed.

Description

Technical Field

[0001] The utility model relates to the field of valves, and particularly relates to a bar gate valve. Background Art

[0002] At present, the bar gate valve is one of the commonly used valves in the mining industry. Generally

[0003] it is composed of a valve frame and blocking bars. When the bars are placed in the valve frame, the bar gate valve is closed; when the bars are withdrawn, the bar gate valve is opened, and the flow rate is controlled by the number of withdrawn bars. The valve flaps of the existing bar gate valves are mostly pushed by cylinders. In the absence of a gas source, the bar gate valve cannot work, and there is a lack of a bar gate valve that manually rotates the valve stem to drive the valve flap to rise and fall. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a bar gate valve aiming at the above deficiencies.

[0005] The utility model includes a valve body, a valve flap and a screw rod lifting mechanism.

[0006] Connecting flanges are respectively arranged at the inlet end and the outlet end of the valve body. A cross beam is arranged in the middle of the valve body, and a group of rod-through holes are opened on the cross beam. A group of blocking bars are sequentially arranged at the bottom of the valve flap, and the blocking bars are located in the corresponding rod-through holes. One end of the screw rod of the screw rod lifting mechanism is movably installed on the cross beam, and the other end of the screw rod of the screw rod lifting mechanism is movably installed at the top of the valve body. The valve flap is driven to rise or fall by the screw rod lifting mechanism.

[0007] The valve body is a rectangular frame. Slide rails are respectively arranged on the inner walls of both sides of the valve body. Slide grooves matched with the slide rails are respectively opened at both ends of the valve flap. The valve flap is driven to rise or fall along the slide rails by the screw rod lifting mechanism.

[0008] The screw rod lifting mechanism is composed of a screw rod and a screw nut. The screw nut is installed on one side of the valve flap. When the screw rod rotates, the valve flap is driven to rise or fall through the screw nut.

[0009] The blocking bars are welded to the bottom of the valve flap.

[0010] A limiting groove is opened at the bottom inside the valve body. When the valve flap drives the blocking bars to drop to the lowest position, the bottom of the blocking bars is located in the limiting groove.

[0011] Reinforcing ribs are respectively arranged on the inner walls of both sides at the top of the valve body.

[0012] A pair of driving grooves are symmetrically distributed at the top of the screw rod of the screw rod lifting mechanism.

[0013] The bottom of the blocking bar is frustum-shaped.

[0014] The advantages of the utility model are as follows: the valve flap is driven to rise and fall by the screw rod lifting mechanism, the adjustment speed is relatively fast, and no gas source is required. Description of the Drawings

[0015] Figure 1 This is the structural schematic diagram of the utility model.

[0016] Figure 2 This is the front structural schematic diagram of the screw rod lifting mechanism of the utility model.

[0017] Figure 3 This is the back structural schematic diagram of the screw rod lifting mechanism of the utility model. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, in the description of the present invention, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if the terms "arrangement" and "connection" are used, they 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] As shown in the attached drawings, the utility model includes a valve body 1, a valve flap 2, and a screw rod lifting mechanism 3.

[0024] Connecting flanges are respectively arranged at the inlet end and the outlet end of the valve body 1. A cross beam 4 is arranged in the middle of the valve body 1. A group of rod passing holes are formed in the cross beam 4. A group of blocking rods 5 are arranged in sequence at the bottom of the valve flap 2. The blocking rods 5 are located in the corresponding rod passing holes. One end of the screw rod of the screw rod lifting mechanism 3 is movably installed on the cross beam 4, and the other end of the screw rod of the screw rod lifting mechanism 3 is movably installed on the top of the valve body 1. The valve flap 2 is driven to rise or fall by the screw rod lifting mechanism 3.

[0025] The valve body 1 is a rectangular frame. Slide rails 6 are respectively arranged on the inner walls of both sides of the valve body 1. Slide grooves matching with the slide rails 6 are respectively formed at both ends of the valve flap 2. The valve flap 2 is driven to rise or fall along the slide rails 6 by the screw rod lifting mechanism 3.

[0026] The screw rod lifting mechanism 3 is composed of a screw rod and a screw nut. The screw nut is installed on one side of the valve flap 2. When the screw rod rotates, the valve flap 2 is driven to rise or fall by the screw nut.

[0027] The blocking rods 5 are welded to the bottom of the valve flap 2.

[0028] A limiting groove is formed at the bottom inside the valve body 1. When the valve flap 2 drives the blocking rods 5 to drop to the lowest position, the bottom of the blocking rods 5 is located in the limiting groove.

[0029] Reinforcing ribs are respectively arranged on the inner walls of both sides at the top of the valve body 1.

[0030] A pair of driving grooves are symmetrically distributed at the top of the screw rod of the screw rod lifting mechanism 3.

[0031] The bottom of the blocking rod 5 is frustum-shaped.

[0032] Embodiment 1: The bar gate is butt - jointed with the round pipe through a connecting flange. When it is necessary to adjust the opening amplitude of the valve flap 2, the handwheel is installed on the top of the screw rod of the screw rod lifting mechanism 3. By rotating the handwheel, the screw rod is driven to rotate. One end of the screw rod is movably installed on the cross beam 4 through a bearing, and the other end of the screw rod is movably installed on the top of the valve body 1 through a bearing. The valve flap 2 is driven by a screw nut to rise or fall along a pair of slide rails 6, so as to achieve the function of opening and closing the flow area of the bar gate. Reinforcing ribs are respectively arranged on the inner walls of both sides at the top of the valve body 1, making the upper frame of the valve body 1 stronger. A pair of driving grooves are mirror - symmetrically distributed at the top of the screw rod of the screw rod lifting mechanism 3, so that the handwheel matches the top of the screw rod, and the screw rod can be driven to rotate when the handwheel is rotated. A limiting groove is opened at the bottom inside the valve body 1, so that after the blocking rod 5 is inserted to the bottom, it can be located in the limiting groove, and the bottom of the blocking rod 5 is in closer contact with the valve body 1. The bottom of the blocking rod 5 is frustum - shaped, making it convenient for the bottom of the blocking rod 5 to be inserted into the limiting groove.

Claims

1. A rod valve, characterized in that It comprises a valve body (1), a valve flap (2) and a screw rod lifting mechanism (3). The inlet and outlet ends of the valve body (1) are respectively provided with connecting flanges, a crossbeam (4) is provided in the middle of the valve body (1), a group of rod holes are opened on the crossbeam (4), a group of blocking rods (5) are arranged in sequence at the bottom of the valve flap (2), and the blocking rods (5) are located in the corresponding rod holes, one end of the screw of the screw lifting mechanism (3) is movably mounted on the crossbeam (4), and the other end of the screw of the screw lifting mechanism (3) is movably mounted on the top of the valve body (1), and the valve flap (2) is driven to rise or fall through the screw lifting mechanism (3).

2. A rod valve according to claim 1, characterized in that: The valve body (1) is a rectangular frame. Slide rails (6) are respectively arranged on the inner walls on both sides of the valve body (1). Slide grooves matching the slide rails (6) are respectively opened at both ends of the valve flap (2). The valve flap (2) is driven to rise or fall along the slide rails (6) through the screw rod lifting mechanism (3).

3. A rod valve according to claim 2, characterized in that: The screw rod lifting mechanism (3) is composed of a screw rod and a screw rod nut. The screw rod nut is installed on one side of the valve disc (2). When the screw rod rotates, the valve disc (2) is driven to rise or fall through the screw rod nut.

4. A rod valve according to claim 1, characterized in that: The blocking rod (5) is welded to the bottom of the valve disc (2).

5. A rod valve according to claim 1, characterized in that: A limiting groove is provided at the bottom of the valve body (1). When the valve flap (2) drives the blocking rod (5) to descend to the lowest position, the bottom of the blocking rod (5) is located in the limiting groove.

6. A rod valve according to claim 2, characterized in that: Reinforcing ribs are respectively arranged on the inner walls on both sides of the top of the valve body (1).

7. A rod valve according to claim 1, characterized in that: A pair of driving grooves are arranged on the top of the screw rod of the screw rod lifting mechanism (3) in a mirror-image manner.

8. The rod valve according to claim 1, characterized in that: The bottom of the blocking rod (5) is in the shape of a truncated cone.

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