Large-displacement automatic intake and exhaust valve

Abstract

The utility model discloses a large-displacement automatic intake and exhaust valve, which is characterized in that a floating barrel bottom hole (11) and a floating barrel bottom hole cover (12) are arranged at the bottom of a floating barrel (10), a blocking piece (13) is arranged below the floating barrel bottom hole cover (12), and the blocking piece (13) is an elastic sheet body larger than the floating barrel bottom hole cover (12). Compared with the prior art, the blocking piece is arranged in the valve body below the floating barrel bottom hole cover, the air inlet and outlet hole (4) can be made to be large and can adapt to large-flow exhaust, and when the air flow in a pipeline is large and the pressure is high, the blocking piece can protect gaps around the floating barrel bottom hole cover, so that the air inlet and outlet hole is prevented from being blocked. The floating ball in the floating barrel is prevented from being blown to the top of the valve due to overlarge air displacement during exhaust, and the problem that the exhaust valve loses the exhaust function due to the fact that the air inlet and the exhaust hole are blocked by the floating ball due to overlarge air flow during exhaust is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to a kind of pipeline air inlet and exhaust valve, especially a large-capacity automatic air inlet and exhaust valve. BACKGROUND

[0002] A large amount of air is often mixed in long-distance water conveying pipeline, especially when the upstream water conveying pipeline is drained, air is rapidly compressed under the action of water flow due to the presence of air in the pipeline, and when the weak part of the pipeline is encountered, pipe explosion is easily caused, in addition, the air accumulated in the pipeline is easy to block the pipeline, commonly known as "air blockage". In addition, many water conveying pipelines use PVC pipes, which are easily deformed or broken due to the negative pressure effect in the pipe when the water consumption is too large. These can easily cause large-scale water stoppage, which not only affects normal life but also consumes a lot of manpower and material resources for repair, which brings great problems to normal water supply.

[0003] The current automatic air inlet and exhaust valve, especially the float type air inlet and exhaust valve, controls the exhaust capacity to be small to prevent the float from being washed to the valve part by the rapidly flowing air when the exhaust capacity is too large, to ensure normal exhaust, but the exhaust process is prolonged.

[0004] A Chinese utility model patent with the authorization announcement number CN 210949891 U discloses a "combined pipeline air inlet and exhaust valve" which can automatically air inlet and exhaust when installed on a water conveying pipeline. However, when the air amount in the pipeline is relatively large and the air pressure is too high, the air can easily enter the float bucket through the air hole at the bottom of the float bucket, blow the floating ball in the float bucket up, block the top air inlet and exhaust hole, and make the exhaust valve lose the exhaust function.

[0005] Therefore, a large-capacity automatic air inlet and exhaust valve that can not only automatically air inlet and exhaust but also prevent the floating ball from being blown to the top of the exhaust valve when the air amount in the pipeline is relatively large and the exhaust air pressure is too high is in urgent need. SUMMARY

[0006] The technical problem to be solved by the utility model is to provide a large-capacity automatic air inlet and exhaust valve that can not only automatically air inlet and exhaust but also prevent the floating ball from being blown to the top of the exhaust valve when the air amount in the pipeline is relatively large and the exhaust air pressure is too high.

[0007] To solve the above technical problems, the utility model adopts the technical scheme: including valve body (1), valve cover (2), valve post (3), air inlet and exhaust hole (4), valve post cover, gland (8), floating ball (9) and bucket (10), its characterized in be equipped with bucket bottom hole (11) and bucket bottom hole cover (12) in the bottom of bucket (10), be equipped with blocking piece (13) below bucket bottom hole cover (12), the blocking piece (13) is the elastic sheet body of greater diameter than bucket bottom hole cover (12), such as rubber, silicone or plastic sheet one kind of semi-soft elastomer.

[0008] As improved technical scheme, be equipped with gland gas guide pipe (6) in the air inlet and exhaust hole (4), the gland gas guide pipe (6) is a hollow pipe and can slide up and down in the slide in the air inlet and exhaust hole (4) of valve post (3), be equipped with gland (8) in the lower end of gland gas guide pipe (6), the gland (8) is a spherical cap body, and when the gland (8) slides up in the slide with gland gas guide pipe (6) can close air inlet and exhaust hole (4), the floating ball (9) is set up in the lower part of gland (8).

[0009] Further, the filter screen (15) is preferably a concave body, and the blocking piece (13) is arranged on the top of the inner side of the filter screen (15).

[0010] Further, the blocking piece (13) is provided with a blocking piece guard plate (14).

[0011] Compared with the prior art, compared with the prior art, the utility model is provided with a blocking piece in the valve body below the bucket bottom hole cover, the air inlet and exhaust hole (4) can be larger, and can adapt to large flow exhaust, when the air flow in the pipeline is relatively large, the pressure is relatively high, the blocking piece can protect the gap around the bucket bottom hole cover, prevent the floating ball in the bucket from being blown to the valve top due to the excessive exhaust volume in the exhaust, effectively solve the problem that the floating ball is blocked in the air inlet and exhaust hole due to the excessive air flow in the exhaust, and the exhaust valve loses the exhaust function. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model embodiment 1.

[0013] Figure 2 It is the structural schematic diagram of the utility model embodiment 2.

[0014] Figure 3 It is the structural schematic diagram of the utility model embodiment 3.

[0015] Figure 4 It is the structural schematic diagram of the utility model embodiment 4.

[0016] Figure 5Structure schematic view of one of the specific applications of the embodiment 5 of the present utility model.

[0017] Figure 6 Structure schematic view of one of the specific applications of the embodiment 5 of the present utility model.

[0018] Figure 7 Structure schematic view of the second specific application of the embodiment 5 of the present utility model.

[0019] As shown in the figure: 1 is valve body, 2 is valve cover, 3 is valve post, 4 is inlet and exhaust hole, 5 is sealing gasket, 6 is gland gas guide pipe, 7 is gas guide pipe sealing gasket, 8 is gland, 9 is float ball, 10 is float bucket, 11 is float bucket bottom hole, 12 is float bucket bottom hole cover, 13 is blocking piece, 14 is blocking piece guard plate, 15 is filter screen. PREFERRED EMBODIMENT

[0020] The present utility model will be further explained in detail in combination with the specific embodiments and the accompanying drawings.

[0021] Embodiment 1: refer to Figure 1 , structure schematic view of the embodiment 1 of the present utility model, including valve body (1), valve cover (2), valve post (3), inlet and exhaust hole (4), valve post cover, gland (8), float ball (9) and float bucket (10), the bottom of float bucket (10) is provided with float bucket bottom hole (11) and float bucket bottom hole cover (12), the lower portion of float bucket bottom hole cover (12) is provided with blocking piece (13), the blocking piece (13) is elastic sheet-shaped body with greater diameter than float bucket bottom hole cover (12), such as rubber, silicone or plastic sheet, etc. The elastic body of semi-soft quality. In this embodiment, it is rubber sheet.

[0022] Further, the upper end of the middle part of valve cover 2 is protruded, the middle part of valve cover 2 is provided with a hole, valve post 3 is arranged on the hole, valve post cover is arranged on the outer side of valve post 3, the hole leading to the outside is arranged on the valve post cover, annular groove is arranged in the lower part of the hole in valve cover 2, and I-shaped sealing gasket 6 is arranged in the annular groove.

[0023] As an improved technical scheme, the inlet and exhaust hole (4) is provided with a gland gas guide pipe (6), the gland gas guide pipe (6) is a hollow pipe and can slide up and down in the sliding channel in the inlet and exhaust hole (4) of the valve post (3), the lower end of the gland gas guide pipe (6) is provided with a gland (8), the gland (8) is a spherical cap body, and the inlet and exhaust hole (4) can be closed by sliding the gland gas guide pipe (6) upward in the sliding channel, and the float ball (9) is arranged at the lower part of the gland (8).

[0024] The lower end of the gland 8 and the connecting part of the gland gas guide pipe 6 are provided with a gas guide pipe sealing gasket 7, the middle part of the gas guide pipe sealing gasket 7 is provided with a hole,

[0025] A blocking piece guard 14 is arranged outside the blocking piece 13, which is a hard plate with a diameter smaller than that of the blocking piece 13. When the air amount in the pipeline is relatively large and the pressure is relatively high, the deformation of the blocking piece 12 under the action of the air pressure can protect the gap around the floating bucket bottom hole cover 12, so that the problem that the floating ball 9 is blown up in the floating bucket 10 by the excessive airflow and the floating ball 9 blocks the top end air inlet and exhaust hole is effectively solved.

[0026] Embodiment 2: refer to Figure 2 , it is the structure schematic diagram of the utility model embodiment 2, in the embodiment 2, the bottom of valve body 1 is provided with the filter screen 15 of inner concave shape, the top end of filter screen 15 is close to the outside of floating bucket bottom hole cover 12, and the blocking piece 13 is arranged outside the top end of filter screen 15, which can play similar role, and can also filter the impurities in water.

[0027] Embodiment 3: refer to Figure 3 , it is the structure schematic diagram of the utility model embodiment 3, in the embodiment 3, the top of filter screen 15 is arc-shaped, which can also play similar role.

[0028] Embodiment 4: refer to Figure 4 , it is the structure schematic diagram of the utility model embodiment 4, the embodiment 4 is simple type, including valve body (1), valve cover (2), valve post (3), air inlet and exhaust hole (4), valve post cover, gland (8), floating ball (9) and floating bucket (10), the bottom of floating bucket (10) is provided with floating bucket bottom hole (11) and floating bucket bottom hole cover (12), the bottom of floating bucket bottom hole cover (12) is provided with blocking piece (13), the blocking piece (13) is elastic sheet body with diameter greater than that of floating bucket bottom hole cover (12), such as rubber, silicone or plastic sheet, and the like semi-soft elastic body, the lower portion of air inlet and exhaust hole (4) of valve post 3 is provided with annular groove, and sealing pad 6 is arranged in the annular groove.

[0029] Embodiment 5: refer to Figures 5-7 , it is the structure schematic diagram of the utility model embodiment 5, in the embodiment 5, the blocking piece (13) is annular elastic sheet with diameter greater than that of floating bucket bottom hole cover (12), as shown in FIG. 5, Figure 6 and Figure 7 , it is the schematic diagram of specific application of blocking piece (13), the annular groove is arranged on floating bucket (10) or filter screen 15 or valve body (1), so that the blocking piece (13) can be conveniently installed on the air inlet and exhaust valve.

[0030] The above merely is the preferred embodiment of the present application, it should be pointed out that the above preferred embodiment should not be regarded as limiting the present application, the protection scope of the present application should be limited by the range defined by the claims. For ordinary skilled in the art, without departing from the spirit and scope of the present application, can also be made several improvements and refinements should be regarded as the protection scope of the present application.

Claims

1. A large displacement automatic intake and exhaust valve, comprising a valve body (1), a valve cover (2), a valve stem (3), an intake and exhaust hole (4), a gland (8), a floating ball (9) and a floating bucket (10), characterized in that: The bottom of the float bucket (10) is provided with a float bucket bottom hole (11) and a float bucket bottom hole cover (12), and a blocking piece (13) is arranged below the float bucket bottom hole cover (12), wherein the blocking piece (13) is an elastic sheet-shaped body larger than the float bucket bottom hole cover (12).

2. The large capacity automatic intake and exhaust valve according to claim 1, characterized by: A gland guide pipe (6) is arranged in the air inlet and outlet hole (4), wherein the gland guide pipe (6) is a hollow pipe and can slide up and down in the sliding channel in the air inlet and outlet hole (4) of the valve post (3), a gland (8) is arranged at the lower end of the gland guide pipe (6), the gland (8) is a spherical cap-shaped body, and the air inlet and outlet hole (4) can be closed when the gland guide pipe (6) slides upward in the sliding channel, and the floating ball (9) is arranged at the lower part of the gland (8).

3. A large capacity automatic inlet and exhaust valve according to claim 1 or 2, characterized in that: A filter screen (15) is arranged at the float bucket bottom hole (11).

4. The large capacity automatic intake and exhaust valve according to claim 3, characterized by: The filter screen (15) is a concave body, and the blocking piece (13) is arranged at the top of the inner side of the filter screen (15).

5. The large capacity automatic intake and exhaust valve according to claim 1 or 2, characterized by: The blocking piece (13) is provided with a blocking piece guard plate (14).

6. The large capacity automatic intake and exhaust valve according to claim 3, characterized by: The blocking piece (13) is provided with a blocking piece guard plate (14).

7. The large capacity automatic intake and exhaust valve according to claim 4, characterized by: The blocking piece (13) is provided with a blocking piece guard plate (14).

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