All-plastic gate valve

Abstract

The utility model discloses an all-plastic sluice valve which comprises a valve body, flanges are fixedly connected to the two sides of the valve body, a first sealing cover is arranged above the valve body, a pair of first bolts penetrate through the first sealing cover, threaded grooves matched with the first bolts are formed in the top of the valve body, a valve plate is arranged in the first sealing cover, and the valve plate is connected with the valve body. A limiting groove is fixedly connected to the top of the valve plate, a limiting rod is arranged in the limiting groove, a second bolt penetrates through the limiting groove, a threaded groove matched with the second bolt is formed in a rod body of the limiting rod, a threaded hole is formed in the first sealing cover, a threaded rod is in threaded connection with the interior of the threaded hole, and the threaded rod is in threaded connection with the interior of the threaded hole. And the top end of the threaded rod is fixedly connected with a rotating block, the bottom end of the threaded rod is fixedly connected to the top end of a limiting rod, and through the structure, the replacement convenience of the filter screen and the valve plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of all-plastic gate valves, in particular to an all-plastic gate valve. Background Art

[0002] The all-plastic gate valve is a gate plate of an opening and closing part. The movement direction of the gate plate 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. When the existing all-plastic gate valve is in use, in order to replace the internal filter screen, the all-plastic gate valve needs to be disassembled from the pipeline, which reduces the convenience of replacing the filter screen. Therefore, in order to correct the above defects, we propose a all-plastic gate valve. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art, and provides a fully plastic gate valve, comprising a valve body: flanges are fixedly connected on both sides of the valve body, and a first sealing cover is arranged on the top of the valve body, a pair of first bolts pass through the first sealing cover, a threaded groove matching the first bolts is provided on the top of the valve body, a valve plate is arranged in the first sealing cover, a limiting groove is fixedly connected to the top of the valve plate, a limiting rod is arranged in the limiting groove, and a second bolt passes through the limiting groove, a threaded groove matching the second bolt is provided on the rod body of the limiting rod, and the first sealing A threaded hole is provided on the cover, a threaded rod is threadedly connected to the threaded hole, a rotating block is fixedly connected to the top of the threaded rod, and the bottom end of the threaded rod is fixedly connected to the top of the limiting rod, a positioning bin is fixedly connected to the valve body, flow-through ports are provided on both sides of the positioning bin, and a filter screen is provided in the positioning bin, the top of the filter screen passes through the top of the positioning bin, a second sealing cover is provided above the positioning bin, a pair of third bolts pass through the second sealing cover, a threaded groove matching the third bolts is provided on the top of the positioning bin, a slag discharge pipe is fixedly connected to the bottom of the positioning bin, and a valve is installed on the slag discharge pipe.

[0004] According to the all-plastic gate valve, anti-slip grooves are provided on the rotating block.

[0005] According to the all-plastic gate valve, a pair of the first bolts are symmetrically arranged about the central axis of the first sealing cover.

[0006] According to the all-plastic gate valve, a pair of the third bolts are symmetrically arranged about the central axis of the second sealing cover.

[0007] According to the all-plastic gate valve, a pair of flanges are symmetrically arranged about the central axis of the valve body.

[0008] According to the all-plastic gate valve, the width of the filter screen is equal to the inner cavity width of the positioning chamber.

[0009] According to the all-plastic gate valve, the length and width of the valve plate are equal to the length and width of the inner cavity of the first sealing cover.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0011] 1. Through the arrangement of the positioning chamber, the filter screen, the second sealing cover and the third bolt, the filter screen can be replaced without disassembling the all-plastic gate valve, thereby improving the convenience of replacing the filter screen;

[0012] 2. Through the arrangement of the valve body, the first sealing cover, the first bolt, the limit groove, the limit rod and the valve plate, the valve plate can be easily replaced, thereby improving the convenience of using the all-plastic gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 It is a partial stereogram of the utility model;

[0015] Figure 2 This is the overall structure diagram of the utility model;

[0016] Figure 3 It is a side view of the positioning bin and the filter screen;

[0017] Figure 4 It is a side view of the valve body and valve plate;

[0018] Figure 5 for Figure 1 Side view of.

[0019] Legend:

[0020] 1. Valve body; 2. Flange; 3. First sealing cover; 4. First bolt; 5. Valve plate; 6. Limiting groove; 7. Limiting rod; 8. Second bolt; 9. Threaded rod; 10. Rotating block; 11. Flow port; 12. Filter screen; 13. Second sealing cover; 14. Third bolt; 15. Positioning chamber. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figures 1 to 5The utility model embodiment is a full plastic gate valve, which includes a valve body 1: flanges 2 are fixedly connected on both sides of the valve body 1, and a first sealing cover 3 is arranged above the valve body 1, a pair of first bolts 4 pass through the first sealing cover 3, a threaded groove matching the first bolts 4 is opened on the top of the valve body 1, a valve plate 5 is arranged in the first sealing cover 3, a limiting groove 6 is fixedly connected to the top of the valve plate 5, a limiting rod 7 is arranged in the limiting groove 6, and a second bolt 8 passes through the limiting groove 6, a threaded groove matching the second bolt 8 is opened on the rod body of the limiting rod 7, a threaded hole is opened on the first sealing cover 3, and a threaded connection is formed in the threaded hole. A threaded rod 9 is connected, the top of the threaded rod 9 is fixedly connected to a rotating block 10, and the bottom end of the threaded rod 9 is fixedly connected to the top of the limiting rod 7, a positioning bin 15 is fixedly connected to the valve body 1, flow ports 11 are provided on both sides of the positioning bin 15, and a filter screen 12 is provided in the positioning bin 15, the top of the filter screen 12 passes through the top of the positioning bin 15, a second sealing cover 13 is provided above the positioning bin 15, a pair of third bolts 14 pass through the second sealing cover 13, a threaded groove matching the third bolts 14 is provided on the top of the positioning bin 15, a slag discharge pipe is fixedly connected to the bottom of the positioning bin 15, and a valve is installed on the slag discharge pipe.

[0023] In order to increase the friction force on the surface of the rotating block 10 , anti-slip grooves are provided on the rotating block 10 .

[0024] The symmetrical arrangement improves the use stability of the first sealing cover 3 , and the pair of first bolts 4 are symmetrically arranged about the central axis of the first sealing cover 3 .

[0025] The symmetrical arrangement improves the use stability of the second sealing cover 13 , and the pair of third bolts 14 are symmetrically arranged about the central axis of the second sealing cover 13 .

[0026] The symmetrical arrangement improves the stability of the valve body 1 in use, and the pair of flanges 2 are symmetrically arranged about the central axis of the valve body 1.

[0027] To prevent impurities from passing through the gap of the positioning bin 15 , the width of the filter screen 12 is equal to the width of the inner cavity of the positioning bin 15 .

[0028] To improve the sealing performance of the valve plate 5 , the length and width of the valve plate 5 are equal to the length and width of the inner cavity of the first sealing cover 3 .

[0029] Working principle: When the utility model is used, the all-plastic gate valve is installed on the pipeline through the flange 2. When the valve needs to be opened, the rotating block 10 is rotated, and the rotating block 10 drives the threaded rod 9 to rotate, and then the threaded rod 9 and the first sealing cover 3 are meshed with each other to drive the valve plate 5 to move upward, so that the fluid passes through the valve body 1 and the inner cavity of the positioning chamber 15. During the flow of the fluid, impurities in the fluid are filtered through the filter screen 12, and the impurities flow into the inner cavity at the bottom of the positioning chamber 15 to prevent the impurities from affecting the closing of the valve plate 5. When the filter screen needs to be replaced 12, unscrew the third bolt 14, remove the second sealing cover 13, then pull out the filter screen 12 upwards and replace it. After the replacement is completed, fix the second sealing cover 13 again by the third bolt 14. When the valve plate 5 needs to be replaced, unscrew the first bolt 4, then pull out the valve plate 5 upwards, unscrew the second bolt 8 at this time, remove the valve plate 5 downwards, then insert the limiting groove 6 on the replaced valve plate 5 into the limiting rod 7, re-screw the second bolt 8, and then reinsert the valve body 1, and re-fix the first sealing cover 3 by the first bolt 4.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A fully plastic gate valve, characterized in that: The valve body (1) comprises a valve body (1), wherein flanges (2) are fixedly connected to both sides of the valve body (1), and a first sealing cover (3) is arranged above the valve body (1), a pair of first bolts (4) are passed through the first sealing cover (3), a threaded groove matching the first bolts (4) is provided at the top of the valve body (1), a valve plate (5) is arranged inside the first sealing cover (3), a limiting groove (6) is fixedly connected to the top of the valve plate (5), a limiting rod (7) is provided inside the limiting groove (6), and a second bolt (8) is passed through the limiting groove (6), a threaded groove matching the second bolt (8) is arranged on the rod body of the limiting rod (7), a threaded hole is provided on the first sealing cover (3), a threaded rod (9) is threadedly connected in the threaded hole, The top end of the threaded rod (9) is fixedly connected to a rotating block (10), and the bottom end of the threaded rod (9) is fixedly connected to the top end of the limiting rod (7). A positioning bin (15) is fixedly connected to the valve body (1). Both sides of the positioning bin (15) are provided with flow-through openings (11), and a filter screen (12) is provided in the positioning bin (15). The top of the filter screen (12) passes through the top of the positioning bin (15). A second sealing cover (13) is provided above the positioning bin (15), and a pair of third bolts (14) pass through the second sealing cover (13). A threaded groove matching the third bolts (14) is provided at the top of the positioning bin (15). A slag discharge pipe is fixedly connected to the bottom of the positioning bin (15), and a valve is installed on the slag discharge pipe.

2. The all-plastic gate valve according to claim 1, characterized in that: Therefore, the rotating block (10) is provided with anti-skid lines.

3. The all-plastic gate valve according to claim 1, characterized in that: A pair of the first bolts (4) are symmetrically arranged about the central axis of the first sealing cover (3).

4. The all-plastic gate valve according to claim 1, characterized in that: The pair of third bolts (14) are symmetrically arranged about the central axis of the second sealing cover (13).

5. The all-plastic gate valve according to claim 1, characterized in that: The pair of flanges (2) are symmetrically arranged about the central axis of the valve body (1).

6. The all-plastic gate valve according to claim 1, characterized in that: The width of the filter screen (12) is equal to the inner cavity width of the positioning chamber (15).

7. The all-plastic gate valve according to claim 1, characterized in that: The length and width of the valve plate (5) are equal to the length and width of the inner cavity of the first sealing cover (3).

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