Stop valve capable of preventing blockage

Abstract

The stop valve comprises a valve body, a valve inlet is formed in one side of the valve body, a side groove is formed in the inner wall of the valve inlet, an inlet filter screen is fixedly connected to the inner wall of the side groove, a bottom cylinder is fixedly connected to the outer surface of the valve body, an inner filter screen is arranged on the inner wall of the bottom cylinder, and the inner filter screen is fixedly connected to the outer surface of the valve body. According to the stop valve capable of preventing blockage, after the stop valve is put into use, the valve body is firstly installed in a pipeline through the inlet flange and the outlet flange, after circulation of the stop valve, the inlet filter screen at the inlet is used for filtering inflowing liquid for the first time, the bottom cover is fixedly connected to the lower surface of the bottom cylinder, and the bottom flange is fixedly connected to the outer surface of the bottom end of the bottom cylinder. Liquid passing through the inlet filter screen can flow to the inner filter screen to be filtered for the second time, then the liquid passes through the core hole and flows out of the valve outlet, so that the liquid is filtered twice at the inlet of the stop valve, impurity particles are intercepted outside the valve core of the stop valve, and the valve core of the stop valve is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a stop valve capable of preventing blockage. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. Due to the small friction between the sealing surfaces during opening and closing, it is relatively durable, has a small opening height, is easy to manufacture and maintain, and is suitable not only for medium and low pressures, but also for high pressures.

[0003] After searching, it was found that in the Chinese Utility Model Patent Publication No. CN212297620U, a stop valve for preventing clogging was disclosed, which was provided with two filter screens. When the stop valve was used, the two filter screens were respectively installed on the left and right sides of the stop valve. In this way, when the stop valve was used to transport liquid, impurities in the liquid were filtered through the filtering effect of the two filter screens, so that the inside of the stop valve was not prone to clogging. However, if filters were provided on both sides of the stop valve, some impurity particles would be gathered between the two filters, causing excessive impurities to accumulate in the stop valve, resulting in clogging inside the stop valve. The arrangement of the filters on both sides could not effectively prevent the stop valve from clogging, and therefore a stop valve with an anti-clogging structure was needed. Utility Model Content

[0004] The main purpose of the utility model is to provide a stop valve that can prevent clogging and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A stop valve for preventing clogging comprises a valve body, a valve inlet being provided on one side of the valve body, a side groove being provided on the inner wall of the valve inlet, an inlet filter being fixedly connected to the inner wall of the side groove, a bottom cylinder being fixedly connected to the outer surface of the valve body, an inner filter being provided on the inner wall of the bottom cylinder, and a bottom cover being fixedly connected to the lower surface of the bottom cylinder.

[0007] In order to achieve the effect of fixing the bottom cover, as a stop valve for preventing clogging of the utility model, the outer surface of the bottom end of the bottom cylinder is fixedly connected with a bottom flange, and the lower surface of the bottom cover is provided with a flange hole.

[0008] In order to achieve the effect of installing a stop valve, as a stop valve for preventing blockage in the utility model, a valve outlet is provided on the other side of the valve body, the outer surface of the valve outlet is fixedly connected to the outlet flange, and the outer surface of the valve inlet is fixedly connected to the inlet flange.

[0009] In order to achieve the effect of matching the valve core to close the core hole, as a stop valve for preventing blockage in the utility model, the inner wall of the valve body is fixedly connected to the valve frame, and the core hole is provided inside the valve frame.

[0010] In order to achieve the effect of connecting the valve stem, as a stop valve for preventing clogging of the utility model, a valve core is provided on the inner wall of the core hole, and a fixing hole is opened on the upper surface of the valve core.

[0011] In order to achieve the effect of rotating the valve stem, as a stop valve for preventing clogging of the utility model, the inner wall of the fixing hole is fixedly connected with the valve stem, and the top end of the valve stem is fixedly connected with a turning handle.

[0012] In order to achieve the effect of threaded connection with the external frame, as a stop valve for preventing clogging of the utility model, the outer surface of the valve stem is provided with an external thread, and the outer surface of the valve body is fixedly connected to the external frame.

[0013] In order to achieve the effect of sealing the top cylinder, as a stop valve for preventing clogging of the utility model, the outer surface of the valve body is fixedly connected to the top cylinder, and the inner wall of the top cylinder is threadedly connected to a sealing cover.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The stop valve to prevent clogging is provided with a valve body, a valve inlet, a side groove, an inlet filter and an inner filter. After the stop valve is put into use, the valve body is first installed in the pipeline using the inlet flange and the outlet flange. After the stop valve is circulated, the inlet filter at the inlet performs the first filtration on the inflowing liquid. The liquid passing through the inlet filter will flow to the inner filter for the second filtration. The liquid then passes through the core hole and flows out from the valve outlet. In this way, two filtrations are performed at the inlet of the stop valve, thereby intercepting the impurity particles outside the valve core of the stop valve and avoiding clogging at the valve core of the stop valve.

[0016] 2. The anti-clogging stop valve is arranged with a bottom cylinder, an inner filter and a bottom cover. After the liquid filtered by the inlet filter flows to the inner filter, the impurities are blocked by the inner filter. After being flushed by the liquid, the impurities are left at the bottom of the inner filter in the bottom cylinder. After using it for a period of time, the bottom cover can be opened to clean out the impurities left in the bottom cylinder, thereby ensuring the filtering effect of the inner filter and avoiding the clogging of the inner filter that affects the liquid filtration flow rate, thereby cleaning the filtered impurities in the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a stop valve for preventing clogging according to Example 1 of the utility model;

[0018] Figure 2 This is a schematic diagram of the rear axonometric structure of a stop valve for preventing blockage according to Example 1 of the present utility model;

[0019] Figure 3 This is a schematic diagram of the axonometric structure of a cutaway valve for preventing clogging according to Example 1 of the utility model;

[0020] Figure 4 This is a schematic diagram of the axonometric structure of a valve body in a stop valve for preventing clogging according to Example 1 of the utility model;

[0021] Figure 5 This is a schematic diagram of the explosion structure of an inner filter screen in a stop valve for preventing clogging according to Example 1 of the utility model;

[0022] Figure 6 This is a schematic cross-sectional structural diagram of a right-side view of a stop valve for preventing blockage in Example 1 of the utility model.

[0023] In the figure: 1. Valve body; 2. Valve inlet; 3. Side groove; 4. Inlet filter; 5. Bottom cylinder; 6. Inner filter; 7. Bottom cover; 8. Bottom flange; 9. Flange hole; 10. Valve outlet; 11. Outlet flange; 12. Inlet flange; 13. Valve frame; 14. Core hole; 15. Valve core; 16. Fixing hole; 17. Valve stem; 18. Turning handle; 19. External thread; 20. External frame; 21. Top cylinder; 22. Sealing cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1-6 As shown, a stop valve for preventing clogging includes a valve body 1, a valve inlet 2 is provided on one side of the valve body 1, a side groove 3 is opened on the inner wall of the valve inlet 2, an inlet filter 4 is fixedly connected to the inner wall of the side groove 3, a bottom cylinder 5 is fixedly connected to the outer surface of the valve body 1, an inner filter 6 is provided on the inner wall of the bottom cylinder 5, and a bottom cover 7 is fixedly connected to the lower surface of the bottom cylinder 5.

[0027] During specific use, through the arrangement of the valve body 1, valve inlet 2, side groove 3, inlet filter 4 and inner filter 6, the two sides of the valve body 1 are the valve inlet 2 and the valve outlet 10 respectively. The installation position cannot be reversed. The side groove 3 at the valve inlet 2 is the inlet filter 4. At the same time, the inner filter 6 is fixed under the valve frame 13 near the valve inlet 2. After the stop valve is put into use, the valve body 1 is first installed in the pipeline using the inlet flange 12 and the outlet flange 11. After the stop valve is circulated, the inlet filter 4 at the inlet filters the incoming liquid for the first time. The liquid passing through the inlet filter 4 will flow to the inner filter 6 for the second filtration. Then the liquid passes through the core hole 14 and flows out from the valve outlet 10. In this way, two filtrations are performed at the inlet of the stop valve, thereby intercepting foreign particles outside the valve core 15 of the stop valve to avoid clogging at the valve core 15 of the stop valve.

[0028] In this embodiment, a bottom flange 8 is fixedly connected to the outer surface of the bottom end of the bottom tube 5 , and a flange hole 9 is formed on the lower surface of the bottom cover 7 .

[0029] During specific use, the bottom cover 7 is fixed by setting the bottom flange 8.

[0030] In this embodiment, a valve outlet 10 is provided on the other side of the valve body 1 , an outlet flange 11 is fixedly connected to the outer surface of the valve outlet 10 , and an inlet flange 12 is fixedly connected to the outer surface of the valve inlet 2 .

[0031] During specific use, the stop valve is installed through the arrangement of the outlet flange 11 and the inlet flange 12 .

[0032] In this embodiment, a valve frame 13 is fixedly connected to the inner wall of the valve body 1 , and a core hole 14 is provided inside the valve frame 13 .

[0033] During specific use, the valve frame 13 is arranged to match the valve core 15 to close the core hole 14 .

[0034] In this embodiment, a valve core 15 is provided on the inner wall of the core hole 14 , and a fixing hole 16 is formed on the upper surface of the valve core 15 .

[0035] During specific use, the valve stem 17 is connected through the setting of the fixing hole 16.

[0036] In this embodiment, the inner wall of the fixing hole 16 is fixedly connected to the valve stem 17 , and the top end of the valve stem 17 is fixedly connected to the turning handle 18 .

[0037] During specific use, the valve stem 17 is rotated by turning the handle 18 .

[0038] In this embodiment, an external thread 19 is provided on the outer surface of the valve stem 17 , and an outer frame 20 is fixedly connected to the outer surface of the valve body 1 .

[0039] During specific use, the external thread 19 is provided to facilitate threaded connection between the valve stem 17 and the outer frame 20 .

[0040] In this embodiment, a top cylinder 21 is fixedly connected to the outer surface of the valve body 1 , and a sealing cover 22 is threadedly connected to the inner wall of the top cylinder 21 .

[0041] During specific use, the top tube 21 is sealed by setting the sealing cover 22.

[0042] Working principle: After the stop valve is put into use, the valve body 1 is first installed in the pipeline using the inlet flange 12 and the outlet flange 11. After the stop valve is circulated, the inlet filter 4 at the inlet filters the incoming liquid for the first time. The liquid passing through the inlet filter 4 will flow to the inner filter 6 for the second filtration, and then the liquid passes through the core hole 14 and flows out from the valve outlet 10; after the liquid filtered by the inlet filter 4 flows to the inner filter 6, the impurities are blocked by the inner filter 6. After being flushed by the liquid, the impurities are left at the bottom of the inner filter 6 in the bottom cylinder 5. After a period of use, the bottom cover 7 can be opened to clean out the impurities left in the bottom cylinder 5.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A stop valve for preventing clogging, comprising a valve body (1), characterized in that: A valve inlet (2) is provided on one side of the valve body (1), a side groove (3) is provided on the inner wall of the valve inlet (2), an inlet filter (4) is fixedly connected to the inner wall of the side groove (3), a bottom cylinder (5) is fixedly connected to the outer surface of the valve body (1), an inner filter (6) is provided on the inner wall of the bottom cylinder (5), and a bottom cover (7) is fixedly connected to the lower surface of the bottom cylinder (5).

2. The anti-clogging stop valve according to claim 1, characterized in that: The outer surface of the bottom end of the bottom cylinder (5) is fixedly connected with a bottom flange (8), and the lower surface of the bottom cover (7) is provided with a flange hole (9).

3. The anti-clogging stop valve according to claim 1, characterized in that: A valve outlet (10) is provided on the other side of the valve body (1), an outlet flange (11) is fixedly connected to the outer surface of the valve outlet (10), and an inlet flange (12) is fixedly connected to the outer surface of the valve inlet (2).

4. The anti-clogging stop valve according to claim 1, characterized in that: The inner wall of the valve body (1) is fixedly connected to a valve frame (13), and a core hole (14) is provided inside the valve frame (13).

5. The anti-clogging stop valve according to claim 4, characterized in that: A valve core (15) is provided on the inner wall of the core hole (14), and a fixing hole (16) is provided on the upper surface of the valve core (15).

6. The anti-clogging stop valve according to claim 5, characterized in that: The inner wall of the fixing hole (16) is fixedly connected to a valve stem (17), and the top end of the valve stem (17) is fixedly connected to a turning handle (18).

7. The anti-clogging stop valve according to claim 6, characterized in that: The outer surface of the valve stem (17) is provided with an external thread (19), and the outer surface of the valve body (1) is fixedly connected to an outer frame (20).

8. The anti-clogging stop valve according to claim 1, characterized in that: The outer surface of the valve body (1) is fixedly connected to a top cylinder (21), and the inner wall of the top cylinder (21) is threadedly connected to a sealing cover (22).

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