Soft sealing gate valve

Abstract

The utility model discloses a soft sealing gate valve which comprises a pipe body, clamping seats are symmetrically arranged on the front side and the rear side of the pipe body, a valve body is fixedly connected to the middle of the top side of the pipe body, a limiting frame is fixedly connected to the middle of the inner side of the valve body, a screw groove is formed in the center of the top of the limiting frame, and a valve rod is in threaded connection with the interior of the screw groove. The bottom of the valve rod is fixedly connected with a gate plate, the top of the gate plate extends into the inner side of the limiting frame and is connected with the inner side of the limiting frame in an up-down sliding mode, the bottom of the gate plate extends into the pipe body, a clamping groove is formed in the gate plate, and a baffle is arranged in the clamping groove. The valve opening distance can be shortened while an operator opens the valve in a more labor-saving manner, the valve can be opened more quickly, the efficiency is improved, the size of the valve body is shortened, and the occupied space is reduced.

Description

Technical Field

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

[0002] Soft-sealed gate valve, industrial valve, the opening and closing parts of the soft-sealed gate valve are the gate, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. Soft-sealed gate valves are divided into two types: rising stem soft-sealed gate valves and concealed stem soft-sealed gate valves. Usually there are trapezoidal threads on the lifting rod. The rotary motion is converted into linear motion through the nut in the middle of the gate and the guide groove on the valve body, that is, the operating torque is converted into operating thrust. When closed, the two sides of the gate isolate the fluid, but for large pipeline valves, the pressure on one side of the gate at this time will be relatively large. When opening, more force needs to be applied to rotate the lifting rod, and the rotary motion is converted into linear motion. It takes a lot of turns to fully open the gate, and the opening time is long and the efficiency is low. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and provides a soft sealing gate valve.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a tube body, the front and rear sides of the tube body are symmetrically provided with a clamping seat, the middle part of the top side of the tube body is fixedly connected with the valve body, the middle part of the inner side of the valve body is fixedly connected with a limiting frame, a screw groove is provided at the top center of the limiting frame, a valve stem is threadedly connected in the screw groove, a sleeve seat is threadedly connected at the top outer side of the valve stem, a ring frame is provided on the outer side of the sleeve seat, a plurality of frame rods are fixedly connected between the ring frame and the sleeve seat, the frame rods are distributed in a circular array relative to the top center of the sleeve seat, a gate plate is fixedly connected to the bottom of the valve stem, the top of the gate plate extends into the inner side of the limiting frame and is slidably connected thereto up and down, the bottom of the gate plate extends into the interior of the tube body and is provided with a clamping groove, and the inner side of the clamping groove is provided with a plurality of frame rods. A baffle is provided, and a rotating drum is fixedly connected to the bottom of the baffle, and the left and right sides of the rotating drum extend into the inner wall of the tube body and are rotatably connected thereto, and the inner side of the rotating drum is rotatably connected to a limiting shaft, and the left and right ends of the limiting shaft extend out of the tube body and bearing seats are symmetrically provided thereon, and the opposite sides of the bearing seats both extend into the inner wall of the tube body and are fixedly connected thereto, and the left end of the limiting shaft is fixedly connected to a rotating shaft, and the left side of the rotating shaft extends out of the outer side of the bearing seat and is fixedly connected thereto, and a hexagonal nut is fixedly connected thereto, and the lateral pressure applied when opening the valve is reduced by arranging a gate plate and a baffle, and the gate plate is divided into two parts, so that the operator can open the valve more labor-savingly while shortening the opening distance, can open the gate more quickly to improve efficiency, and shorten the volume of the valve body to reduce occupied space.

[0005] As a further description of the above technical solution: a bottom plate is arranged directly below the rotating drum, the upper side of the bottom plate is fixedly connected to the outer wall of the tube body, and the left and right sides of the bottom plate are fixedly connected to the bearing seats, thereby improving the overall strength of the tube body below the rotating drum and maintaining the relative horizontal stability of the bearing seats on both sides, thereby ensuring the normal rotation of the rotating shaft.

[0006] As a further description of the above technical solution: sealing gaskets are arranged on the left and right sides of the baffle and the gate plate to improve the sealing performance between the baffle and the gate plate and the inner side of the tube body.

[0007] As a further description of the above technical solution: a buffer pad is fixedly connected to the top of the front side of the baffle, and a groove is provided at the lower front side of the baffle, and the groove is located on the inner side of the tube body to reduce the impact force between the front side of the baffle and the tube body when the gate is opened.

[0008] As a further description of the above technical solution: a handle is fixedly connected to the top rear side of the ring frame, and a non-slip sleeve is rotatably connected to the outer side of the handle, so that the operator can more conveniently exert force to rotate the ring frame to open the gate.

[0009] As a further description of the above technical solution: an extrusion pad is fixedly connected in the slot of the gate plate to improve the sealing performance in the slot.

[0010] The utility model has the following beneficial effects:

[0011] 1. In the utility model, the lateral pressure when opening the valve is reduced by arranging the gate plate and the baffle plate, so that the operator can open the valve more labor-savingly and shorten the gate opening distance at the same time, can open the gate more quickly to improve efficiency, and shorten the volume of the valve body to reduce the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the interior of a tube body in a soft-sealed gate valve proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the positions of a valve stem and an extrusion pad in a soft-sealed gate valve proposed by the utility model;

[0014] Figure 3 This is a schematic diagram of the positions of the rotating shaft and the limiting shaft in a soft-sealed gate valve proposed by the utility model;

[0015] Figure 4 The utility model is a schematic diagram of a soft-sealed gate valve.

[0016] Among them, 1. tube body; 2. holder; 3. valve body; 4. limit frame; 5. valve stem; 6. sleeve seat; 7. frame rod; 8. ring frame; 9. gate; 10. slot; 11. baffle; 12. drum; 13. limit shaft; 14. bearing seat; 15. shaft; 16. hexagonal nut; 17. bottom plate; 18. sealing gasket strip; 19. buffer plate; 20. handle; 21. extrusion pad. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Reference Figure 1-4 , the front and rear sides of the tube body 1 are symmetrically provided with a holder 2, the middle part of the top side of the tube body 1 is fixedly connected with a valve body 3, the inner middle part of the valve body 3 is fixedly connected with a limit frame 4, a screw groove is provided at the top center of the limit frame 4, a valve stem 5 is threadedly connected in the screw groove, a sleeve seat 6 is threadedly connected to the top outer side of the valve stem 5, a ring frame 8 is provided on the outer side of the sleeve seat 6, a number of frame rods 7 are fixedly connected between the ring frame 8 and the sleeve seat 6, and the frame rods 7 are distributed in a ring array relative to the top center of the sleeve seat 6, a gate plate 9 is fixedly connected to the bottom of the valve stem 5, the top of the gate plate 9 extends into the inner side of the limit frame 4 and is slidably connected therewith, the bottom of the gate plate 9 extends into the interior of the tube body 1 and is provided with a slot 10, a baffle 11 is provided in the slot 10, a rotating drum 12 is fixedly connected to the bottom of the baffle 11, the left and right sides of the rotating drum 12 extend into the inner wall of the tube body 1 and are rotatably connected therewith, the inner side of the rotating drum 12 is rotatably connected to a limit shaft 13, and the limit The left and right ends of the shaft 13 extend out of the outside of the tube body 1 and are symmetrically provided with bearing seats 14, and the opposite sides of the bearing seats 14 extend into the inner wall of the tube body 1 and are fixedly connected thereto, the left end of the limit shaft 13 is fixedly connected with a rotating shaft 15, the left side of the rotating shaft 15 extends out of the outside of the bearing seat 14 and is fixedly connected with a hexagonal nut 16, a bottom plate 17 is provided directly below the rotating drum 12, the upper side of the bottom plate 17 is fixedly connected to the outer wall of the tube body 1, the left and right sides of the bottom plate 17 are fixedly connected to the bearing seat 14, the baffle 11 and the gate plate 9 are provided with sealing gaskets 18 on the left and right sides, a buffer pad 19 is fixedly connected to the top of the front side of the baffle 11, a groove is provided at the lower front side of the baffle 11, and the groove is located on the inner side of the tube body 1, a handle 20 is fixedly connected to the top rear side of the ring frame 8, an anti-slip sleeve is rotatably connected to the outside of the handle 20, and an extrusion pad 21 is fixedly connected in the slot 10 of the gate plate 9.

[0019] Working principle: In the utility model, the hexagonal nut 16 is rotated by clamping with a wrench to rotate the baffle 11 to rotate and stand upright, and then the ring frame 8 is rotated by the handle 20 to rotate the valve stem 5 and drive the gate 9 to move downward, until the gate 9 is engaged and fixed with the baffle 11 through the slot 10 to complete isolation. When opening, the ring frame 8 is rotated by the handle 20 to rotate the valve stem 5 and drive the gate 9 to move upward. When the baffle 11 is disengaged from the slot 10, it rotates forward and embeds into the groove for initial discharge, and the handle 20 is continued to be rotated until the gate 9 enters the middle part of the inner side of the limit frame 4 to complete the gate opening.

[0020] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soft-sealed gate valve, comprising a tube body (1), characterized in that: A clamping seat (2) is symmetrically arranged on the front and rear sides of the tube body (1); a valve body (3) is fixedly connected to the middle of the top side of the tube body (1); a limiting frame (4) is fixedly connected to the middle of the inner side of the valve body (3); a screw groove is arranged at the top center of the limiting frame (4); a valve stem (5) is threadedly connected to the inner side of the screw groove; a sleeve (6) is threadedly connected to the top outer side of the valve stem (5); a ring frame (8) is arranged on the outer side of the sleeve (6); a plurality of frame rods (7) are fixedly connected between the ring frame (8) and the sleeve (6); the frame rods (7) are distributed in a ring array relative to the top center of the sleeve (6); a gate plate (9) is fixedly connected to the bottom of the valve stem (5); the top of the gate plate (9) extends into the inner side of the limiting frame (4) and is slidably connected to it up and down; The bottom of the gate plate (9) extends into the interior of the tube body (1) and is provided with a slot (10), a baffle (11) is provided in the slot (10), a rotating drum (12) is fixedly connected to the bottom of the baffle (11), the left and right sides of the rotating drum (12) extend into the inner wall of the tube body (1) and are rotatably connected thereto, the inner side of the rotating drum (12) is rotatably connected to a limiting shaft (13), the left and right ends of the limiting shaft (13) extend out of the tube body (1) and are symmetrically provided with a bearing seat (14), the opposite sides of the bearing seat (14) both extend into the inner wall of the tube body (1) and are fixedly connected thereto, the left end of the limiting shaft (13) is fixedly connected to a rotating shaft (15), the left side of the rotating shaft (15) extends out of the outer side of the bearing seat (14) and is fixedly connected thereto a hexagonal nut (16).

2. A soft-sealed gate valve according to claim 1, characterized in that: A bottom plate (17) is arranged directly below the rotating drum (12); the upper side of the bottom plate (17) is fixedly connected to the outer wall of the tube body (1); and the left and right sides of the bottom plate (17) are fixedly connected to the bearing seat (14).

3. A soft-sealed gate valve according to claim 1, characterized in that: Sealing strips (18) are provided on both the left and right sides of the baffle plate (11) and the gate plate (9).

4. A soft-sealed gate valve according to claim 1, characterized in that: A buffer pad (19) is fixedly connected to the top of the front side of the baffle (11), and a groove is provided at the lower part of the front side of the baffle (11), and the groove is located on the inner side of the tube body (1).

5. A soft-sealed gate valve according to claim 1, characterized in that: A handle (20) is fixedly connected to the rear side of the top of the ring frame (8), and an anti-slip sleeve is rotatably connected to the outer side of the handle (20).

6. A soft-sealed gate valve according to claim 1, characterized in that: A compression pad belt (21) is fitted and fixedly connected in the clamping groove (10) of the gate plate (9).

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