CN213655818U - Quick-closing air suction type check valve - Google Patents

Abstract

The utility model discloses a fast-closing air-extracting check valve, which belongs to the field of gate valve control, and comprises a gate valve, wherein the upper end of the gate valve is rotatably connected with a handle, the right end of the gate valve is provided with an air outlet, the inner wall of the air outlet is provided with an internal thread, the right end of the gate valve is provided with a connecting pipe, the upper end of the connecting pipe is provided with an external thread, the air outlet is in threaded connection with the left end of the connecting pipe, the outer end of the external thread is sleeved with a sealing ring, the left end of the external thread is contacted with the air outlet, a fixing ring and a limiting ring are respectively and fixedly connected between the inner walls of the connecting pipe, the limiting ring is positioned at the lower side, the upper end of the limiting ring is provided with a plurality of through holes which are uniformly distributed, connecting rods are inserted in the through holes, the upper ends, it can realize improving the check valve seal nature, and very big improvement non return effect.

Description

Quick-closing air suction type check valve

Technical Field

The utility model relates to a gate valve control field, more specifically say, relate to a close bleeder check valve soon.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The disadvantages are high resistance and poor sealing performance when closed.

Check valves may also be used to provide make-up lines to auxiliary systems where the pressure may rise above the system pressure. Check valves can be largely classified into swing check valves (rotating about the center of gravity) and lift check valves, which are of the type that allow media flow in one direction only and prevent flow in the opposite direction. Typically such valves are self-actuating, with the flap opening under the pressure of a fluid flowing in one direction; when the fluid flows in the opposite direction, the valve flap is closed by the fluid pressure and the self-weight of the valve flap to act on the valve seat, thereby cutting off the flow

The traditional check valve is poor in airtightness at present and poor in check effect.

Disclosure of Invention

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a close bleeder check valve soon, it can realize improving the check valve seal, and very big improvement non return effect.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A fast-closing air suction type check valve comprises a gate valve, wherein a handle is rotatably connected to the upper end of the gate valve, an air outlet is cut at the right end of the gate valve, an internal thread is cut on the inner wall of the air outlet, a connecting pipe is arranged at the right end of the gate valve, an external thread is cut on the upper end of the connecting pipe, the air outlet is in threaded connection with the left end of the connecting pipe, a sealing ring is sleeved at the outer end of the external thread, the left end of the connecting pipe is in contact with the air outlet, a fixing ring and a limiting ring are fixedly connected between the inner walls of the connecting pipe respectively, the limiting ring is positioned at the lower side of the fixing ring, a plurality of uniformly distributed through holes are cut at the upper end of the limiting ring, connecting rods are inserted into the through holes, magnets are fixedly connected to the upper ends of the connecting rods, compression, the downside of spacing ring is equipped with the closing plate, the upper end of closing plate and the lower extreme fixed connection of connecting rod, the edge fixedly connected with sealing ring in the upper end of closing plate, it can realize improving the check valve seal, and very big improvement non return effect.

Furthermore, the upper end of the handle is chiseled with anti-skidding lines, the handle is in a circular shape when viewed from above, and the friction force between the palm and the handle is effectively improved.

Furthermore, the external threads at the two ends of the connecting pipe are polished and coated with an anti-rust layer, so that the service life of the connecting pipe is effectively prolonged.

Further, the lower extreme fixedly connected with a plurality of evenly distributed's of magnet magnetic sheet, even the non return is convenient for with magnet phase-match, prevents that the closing plate from rocking in the inside of connecting pipe.

Furthermore, the boundary of the sealing plate is larger than the inner ring of the limiting ring, the upper end boundary of the sealing plate is fixedly connected with a sealing ring, the upper end of the sealing ring is in contact with the lower end of the limiting ring, and the airtightness of the check valve is effectively improved.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme can realize improving the check valve seal, and very big improvement non return effect.

(2) The upper end of the handle is chiseled with anti-skid grains, and the handle is in a circular shape when being overlooked, so that the friction force between the palm and the handle is effectively improved.

(3) The external threads at the two ends of the connecting pipe are polished and coated with an anti-rust layer, so that the service life of the connecting pipe is effectively prolonged.

(4) The lower extreme fixedly connected with a plurality of evenly distributed's of magnet magnetic sheet, magnetic sheet and magnet phase-match, even the non return is convenient for, prevent that the closing plate from rocking in the inside of connecting pipe.

(5) The boundary of the sealing plate is larger than the inner ring of the limiting ring, the upper end boundary of the sealing plate is fixedly connected with the sealing ring, the upper end of the sealing ring is in contact with the lower end of the limiting ring, and the airtightness of the check valve is effectively improved.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic perspective view of the connecting tube of the present invention;

FIG. 3 is a schematic top view of the spacing ring of the present invention;

fig. 4 is the schematic diagram of the half-section structure of the connecting pipe of the present invention.

The reference numbers in the figures illustrate:

1 gate valve, 2 handles, 3 connecting pipes, 4 external threads, 5 sealing rings, 6 fixing rings, 7 through holes, 8 connecting rods, 9 compression springs, 10 magnets, 11 sealing plates, 12 sealing rings and 13 limiting rings.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-4, a fast-closing suction check valve comprises a gate valve 1, a handle 2 is rotatably connected to the upper end of the gate valve 1, an air outlet is cut at the right end of the gate valve 1, an inner thread is cut on the inner wall of the air outlet, a connecting pipe 3 is arranged at the right end of the gate valve 1, an external thread 4 is cut on the upper end of the connecting pipe 3, the air outlet is in threaded connection with the left end of the connecting pipe 3, a sealing ring 5 is sleeved on the outer end of the external thread 4, the left end of the connecting pipe 3 is in contact with the air outlet, a fixing ring 6 and a limiting ring 13 are respectively and fixedly connected between the inner walls of the connecting pipe 3, the limiting ring 13 is positioned at the lower side of the fixing ring 6, a plurality of uniformly distributed through holes 7 are cut on the upper end of the limiting ring 13, connecting rods 8 are inserted into the plurality of through holes 7, the surfaces, the equal fixedly connected with compression spring 9 in outer end of connecting rod 8, compression spring 9 are located between magnet 10 and the spacing ring 13, and the downside of spacing ring 13 is equipped with closing plate 11, and closing plate 11's material is the stainless steel, the effectual random that has improved, closing plate 11's upper end and connecting rod 8's lower extreme fixed connection, closing plate 11's upper end edge fixedly connected with sealing ring 12.

Referring to fig. 1 to 3, the upper end of the handle 2 is cut with anti-slip lines, the handle 2 is circular when viewed from above, so that the friction between the palm and the handle 2 is effectively improved, the external threads 4 at the two ends of the connecting pipe 3 are both polished and coated with an anti-rust layer, and the service life of the connecting pipe 3 is effectively prolonged.

Referring to fig. 2-4, the lower end of the magnet 10 is fixedly connected with a plurality of magnetic sheets which are uniformly distributed, the magnetic sheets are matched with the magnet 10, so that the check is facilitated, the sealing plate 11 is prevented from shaking in the connecting pipe 3, the boundary of the sealing plate 11 is larger than the inner ring of the limit ring 13, the upper end boundary of the sealing plate 11 is fixedly connected with the sealing ring 12, the upper end of the sealing ring 12 is in contact with the lower end of the limit ring 13, and the sealing performance of the check valve is effectively improved.

When this check valve during operation, gaseous left end from gate valve 1 gets into and through connecting pipe 3, when gaseous punching press closing plate 11, closing plate 11 separates with spacing ring 13 promptly, effectually carry gaseous, when the inside atmospheric pressure of pipeline equals or flows backward, elasticity through compression spring 9 makes the upper end of closing plate 11 contact with the lower extreme of spacing ring 13, improve the seal between closing plate 11 and the spacing ring 13 through sealing ring 12, magnet 10 of 8 upper ends of connecting rod adsorbs each other with the magnetic sheet of 6 lower extremes of solid fixed ring, prevent that sealing ring 12 from droing in inside and rocking, it can realize improving the check valve seal, and very big improvement non return effect.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (5)

1. The utility model provides a fast closed bleeder check valve, includes gate valve (1), the upper end of gate valve (1) is rotated and is connected with handle (2), its characterized in that: the right-hand member of gate valve (1) is opened and is chiseled there is the gas outlet, the inner wall of gas outlet is cut and is had the internal thread, the right-hand member of gate valve (1) is equipped with connecting pipe (3), the upper end of connecting pipe (3) is opened and is chiseled there is external screw thread (4), the left end threaded connection of gas outlet and connecting pipe (3), the outer pot head of external screw thread (4) is equipped with sealing washer (5), the left end and the gas outlet of connecting pipe (3) contact, fixed ring (6) and spacing ring (13) of fixed connection respectively between the inner wall of connecting pipe (3), spacing ring (13) are located the downside of fixed ring (6), the upper end of spacing ring (13) is opened and is chiseled there are a plurality of evenly distributed through-hole (7), and is a plurality of the inside of through-hole (7) is all inserted and is equipped with, the equal fixedly connected with compression spring (9) in outer end of connecting rod (8), compression spring (9) are located between magnet (10) and spacing ring (13), the downside of spacing ring (13) is equipped with closing plate (11), the upper end of closing plate (11) and the lower extreme fixed connection of connecting rod (8), the upper end edge fixedly connected with sealing ring (12) of closing plate (11).

2. The quick close check valve of claim 1 wherein: the upper end of the handle (2) is chiseled with anti-slip lines, and the handle (2) is in a circular shape when viewed from above.

3. The quick close check valve of claim 1 wherein: and the external threads (4) at the two ends of the connecting pipe (3) are polished and coated with an anti-rust layer.

4. The quick close check valve of claim 1 wherein: the lower end of the magnet (10) is fixedly connected with a plurality of uniformly distributed magnetic sheets, and the magnetic sheets are matched with the magnet (10).

5. The quick close check valve of claim 1 wherein: the limit of closing plate (11) is greater than the inner ring of spacing ring (13), the upper end border fixedly connected with sealing ring (12) of closing plate (11), the upper end of sealing ring (12) contacts with the lower extreme of spacing ring (13).

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