CN221237206U - Fluid conveying gate valve - Google Patents

Abstract

A fluid conveying gate valve comprises a gate valve body (100), a pair of connecting flanges (101), a gate valve rod (102) and a drain plug (103), wherein a gate valve seat (104) is arranged in the middle of the gate valve body (100), a valve cover (105) is arranged at the upper part of the gate valve body (100), and a drain hole is formed in the bottom of the gate valve body (100); the advantages are that: the valve can be quickly replaced by threaded connection or flange connection according to requirements, and the valve can adapt to pipelines with different connection requirements, and can be used for backwashing the valve clack and the valve seat after being used for a long time, so that the service life of the valve is prolonged.

Description

Fluid conveying gate valve

Technical Field

The utility model relates to the field of valves, in particular to a fluid conveying gate valve.

Background

At present, most of inlet ends or outlet ends of existing fluid conveying gate valves are connected through threads or flanges, but when the gate valve is used, the problem that the connection positions of a butt joint pipeline and the gate valve are not matched is solved, and the gate valve capable of quickly replacing the type of a connecting port is lacking. After the existing gate valve is used for a long time, sundries or scales can be accumulated between the valve clack and the valve seat to influence the sealing performance of the valve, and the gate valve capable of backwashing the valve clack and the valve seat from the lower part is lacking.

Disclosure of utility model

The present utility model aims to overcome the above disadvantages and provide a fluid delivery gate valve.

The utility model comprises a gate valve body, a pair of connecting flanges, a gate valve rod and a drain plug,

The middle part of the gate valve body is provided with a gate valve seat, the upper part of the gate valve body is provided with a valve cover, the bottom of the gate valve body is provided with a drain hole, a pair of connecting flanges are respectively arranged at the inlet end and the outlet end of the gate valve body, the gate valve rod is movably and hermetically arranged in the valve cover, the end part of the gate valve rod is provided with a valve clack, the gate valve rod is rotated to drive the valve clack to move downwards to tightly attach to the gate valve seat to form a seal, and a drain plug is arranged in the drain hole of the gate valve body.

Internal threads are respectively arranged in an inlet and an outlet of the gate valve body, a flange plate is arranged at one end of the connecting flange, external threads are arranged on the outer wall of the other end of the connecting flange, and a pair of connecting flanges are respectively arranged in the inlet end and the outlet end of the gate valve body in a threaded manner.

An annular sealing groove is formed in the end face of the connecting flange, an end face sealing ring is arranged in the annular sealing groove, and when the connecting flange is screwed into the gate valve body, the end face sealing ring is pressed on the gate valve body to form sealing.

The inner wall of the blow-down hole of the gate valve body is provided with an internal thread, the outer wall of the blow-down plug is provided with an external thread, and the thread of the blow-down plug is hermetically arranged in the blow-down hole of the gate valve body.

The bottom of the blowdown plug is provided with a back flush pipeline, and the outlet end of the back flush pipeline faces the valve clack.

The back flushing pipeline is provided with a shutoff ball valve.

A pair of valve clack guide grooves are arranged in the gate valve body in a mirror image distribution mode, and the valve clacks move up and down along the pair of valve clack guide grooves.

The gate valve rod is movably arranged in the valve cover through the packing seal.

A hand wheel or an electric actuator is arranged at the top of the valve rod of the gate valve.

The utility model has the advantages that: the valve can be quickly replaced by threaded connection or flange connection according to requirements, and the valve can adapt to pipelines with different connection requirements, and can be used for backwashing the valve clack and the valve seat after being used for a long time, so that the service life of the valve is prolonged.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model.

Fig. 2 is a partially enlarged schematic construction of the present utility model.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like in the description of the present invention, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in the drawings, the present utility model includes a gate valve body 100, a pair of coupling flanges 101, a gate valve stem 102 and a drain plug 103,

The middle part of the gate valve body 100 is provided with a gate valve seat 104, the upper part of the gate valve body 100 is provided with a valve cover 105, the bottom of the gate valve body 100 is provided with a drain hole, a pair of connecting flanges 101 are respectively arranged at the inlet end and the outlet end of the gate valve body 100, a gate valve rod 102 is movably and hermetically arranged in the valve cover 105, the end part of the gate valve rod 102 is provided with a valve clack 106, the gate valve rod 102 is rotated to drive the valve clack 106 to move downwards to be tightly attached to the gate valve seat 104 so as to form a seal, and a drain plug 103 is arranged in the drain hole of the gate valve body 100.

Internal threads are respectively arranged in an inlet and an outlet of the gate valve body 100, a flange plate is arranged at one end of the connecting flange 101, external threads are arranged on the outer wall of the other end of the connecting flange 101, and a pair of connecting flanges 101 are respectively arranged in the inlet end and the outlet end of the gate valve body 100 in a threaded manner.

An annular sealing groove is formed in the end face of the connecting flange 101, an end face sealing ring 108 is arranged in the annular sealing groove, and when the connecting flange 101 is screwed into the gate valve body 100, the end face sealing ring 108 is pressed on the gate valve body 100 to form sealing.

The inner wall of the drain hole of the gate valve body 100 is provided with an internal thread, the outer wall of the drain plug 103 is provided with an external thread, and the drain plug 103 is hermetically arranged in the drain hole of the gate valve body 100.

The bottom of the drain plug 103 is provided with a back flushing pipeline 107, and the outlet end of the back flushing pipeline 107 faces the valve clack 106.

A shut-off ball valve is provided on the backwash line 107.

A pair of flap guide grooves are mirror-image-distributed in the gate valve body 100, and the flap 106 moves up and down along the pair of flap guide grooves.

Gate valve stem 102 is movably mounted within valve cap 105 by a packing seal.

A hand wheel or an electric actuator is provided on top of the gate valve stem 102.

Example 1: depending on the type of the butt-joint pipe, the connecting flange 101 may be optionally not installed, and the pipe may be connected by a threaded connection. When the connecting flange 101 is installed, the connecting flange is connected with a pipeline. The connection flange 101 and the gate valve body 100 are sealed by adopting an end face sealing ring 108 and threads, so that leakage is prevented. The valve rod 102 of the gate valve is rotated to drive the valve clack 106 to move up and down along a pair of valve clack guide grooves, and when the valve clack 106 is tightly attached to the valve seat 104 of the gate valve, medium circulation is disconnected, and the gate valve is closed. When the valve flap 106 is lifted upward, the gate valve is turned on, and the medium can circulate. When the back flushing device is used for a long time, the back flushing pipeline 107 is connected, the high-pressure medium which is the same as the conveying medium is adopted to flush towards the valve clack 106, and after flushing, the ball valve on the back flushing pipeline 107 is closed, so that back flushing is completed. When the gate valve needs to be used for discharging sewage, the sewage discharging plug 103 is unscrewed.

Claims (9)

1. A fluid delivery gate valve is characterized by comprising a gate valve body (100), a pair of connecting flanges (101), a gate valve rod (102) and a drain plug (103),

Gate valve body (100) middle part is provided with gate valve disk seat (104), gate valve body (100) upper portion is provided with valve gap (105), it has the blowdown hole to open gate valve body (100) bottom, a pair of flange (101) are installed respectively on gate valve body (100)'s entrance point and exit end, gate valve rod (102) movable seal installs in valve gap (105), gate valve rod (102)'s tip is provided with valve clack (106), it forms sealedly to rotate gate valve rod (102), drive valve clack (106) move down closely laminating with gate valve disk seat (104), blowdown stopper (103) are installed in the blowdown hole of gate valve body (100).

2. A fluid delivery gate valve according to claim 1, characterized in that the inlet and outlet of the gate valve body (100) are provided with internal threads, respectively, one end of the connecting flange (101) is provided with a flange, the outer wall of the other end of the connecting flange (101) is provided with external threads, and a pair of connecting flanges (101) are respectively screwed into the inlet end and the outlet end of the gate valve body (100).

3. A fluid transfer gate valve according to claim 2, characterized in that the end face of the connecting flange (101) is provided with an annular sealing groove, in which an end face sealing ring (108) is arranged, and that the end face sealing ring (108) is pressed against the gate valve body (100) when the connecting flange (101) is screwed into the gate valve body (100) to form a seal.

4. The fluid delivery gate valve of claim 1, wherein the inner wall of the drain hole of the gate valve body (100) is provided with an internal thread, the outer wall of the drain plug (103) is provided with an external thread, and the drain plug (103) is mounted in the drain hole of the gate valve body (100) in a threaded sealing manner.

5. A fluid transfer gate valve according to claim 4, characterized in that the bottom of the drain plug (103) is provided with a backwash pipe (107), the outlet end of the backwash pipe (107) being directed towards the flap (106).

6. A fluid transfer gate valve according to claim 5, characterized in that the backwash pipe (107) is provided with a shut-off ball valve.

7. A fluid transfer gate valve according to claim 1, wherein a pair of flap guide grooves are provided in mirror image in the gate valve body (100), and the flap (106) moves up and down along the pair of flap guide grooves.

8. A fluid transfer gate valve according to claim 1, characterized in that the gate valve stem (102) is movably mounted in the valve cover (105) by means of a packing seal.

9. A fluid transfer gate valve according to claim 1, characterized in that the top of the gate valve stem (102) is provided with a hand wheel or an electric actuator.