CN217927351U - Check valve capable of preventing frost damage - Google Patents

Abstract

The utility model discloses a can prevent check valve of frost damage, including be provided with open-ended valve body, set up the case in the valve body and be used for with the opening complex apron of valve body. The cover plate is provided with a screw hole, and a bolt is connected to the screw hole in a threaded manner. The advantages are that: through set up the screw on the apron at the check valve to threaded connection bolt on the screw, through when outdoor temperature zero degree below, open the bolt and carry out the drainage to the liquid in the valve body, make the check valve avoid low temperature to freeze and damage.

Description

Check valve capable of preventing frost damage

Technical Field

The utility model relates to a check valve field specifically is a can prevent check valve of freezing damage.

Background

The check valve is a valve in which the opening and closing piece is 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. Media from the underside of the inlet end) and out the outlet end. In the check valve on the existing outdoor sewage pump, because the temperature in winter in some areas is below zero, the anti-freezing effect of the heat-insulating anti-freezing cotton is not ideal, so that the check valve arranged outdoors is damaged because the check valve is broken due to the freezing of liquid in the valve body.

In view of the above, it is desirable to provide a check valve that prevents freezing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of can prevent check valve of freezing, the effectual current check valve of having solved leads to the condition by freezing easily because of low temperature winter.

The utility model adopts the technical proposal that:

a check valve capable of preventing frost damage comprises a valve body with an opening, a valve core arranged in the valve body and a cover plate matched with the opening of the valve body. The cover plate is provided with a screw hole, and a bolt is connected to the screw hole in a threaded manner.

Further, the method comprises the following steps: the aperture of the screw hole is 5mm.

Further, the method comprises the following steps: one end of the bolt far away from the cover plate is provided with an adjusting knob,

further, the method comprises the following steps: the adjusting knob surface layer is provided with a rubber coating layer.

Further, the method comprises the following steps: the screw hole is located the central point of apron.

Further, the method comprises the following steps: the cover plate is provided with a groove concentric with the screw hole, the bolt is sleeved with a sealing ring, and the sealing ring is arranged in the groove.

Utility model's beneficial effect:

1. through set up the screw on the apron at the check valve to threaded connection bolt on the screw, through when outdoor temperature zero degree below, open the bolt and carry out the drainage to the liquid in the valve body, make the check valve avoid low temperature to freeze and damage.

2. Through setting up the knob, can be so that more convenient when adjusting bolt, the regulation of the bolt of being convenient for. Through setting up the rubber layer, can be at the direct manual rotation bolt of temperature lower time, prevent that the hand from being frostbitten.

3. Through setting up the sealing washer, can be so that when the bolt passes through screw and apron threaded connection, the sealing washer can effectually play sealed effect to the junction of bolt and apron.

Drawings

Fig. 1 is a general schematic view of a check valve capable of preventing freezing damage according to an embodiment of the present application.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is an enlarged schematic view of the area a in fig. 2.

Labeled as: 1. a valve body; 2. a cover plate; 21. a screw hole; 23. a groove; 22. a bolt; 3. a seal ring; 4. and adjusting a knob.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2 and 3, an embodiment of the present application provides a check valve capable of preventing freezing damage, which includes a valve body 1 provided with an opening, a valve core disposed in the valve body 1, and a cover plate 2 for cooperating with the opening of the valve body 1. The cover plate 2 is provided with a screw hole 21, and a bolt 22 is connected to the screw hole 21 in a threaded manner.

During the in-service use, when outdoor temperature is in below zero degree, take out bolt 22, carry out the drainage through screw 21 to the rivers in the check valve, with bolt 22 and 21 threaded connection of screw after the drainage is accomplished.

In the above design, the screw hole 21 is provided on the cover plate 2 of the check valve, and the bolt 22 is screwed on the screw hole 21, so that when the outdoor temperature is below zero, the bolt 22 is opened to drain the liquid in the valve body 1, and the check valve is prevented from being frozen and damaged at low temperature.

Specifically, the method comprises the following steps: the aperture of the screw hole 21 is 5mm. Other screw holes with 6mm or 8mm diameter can be used.

Specifically, the method comprises the following steps: an adjusting knob 4 is arranged at one end of the bolt 22 far away from the cover plate 2.

In actual use, the knob 4 is adjusted by arranging the knob 4 at one end of the bolt 22 far away from the cover plate 2, so that the bolt 22 can be tightened or loosened.

In the above design, the knob 4 is provided, so that the bolt 22 can be adjusted more conveniently, and the adjustment of the bolt 22 is facilitated.

Specifically, the method comprises the following steps: the surface layer of the adjusting knob 4 is provided with a rubber coating layer.

In the above design, the rubber layer is provided, so that the bolt 22 can be directly and manually rotated when the air temperature is low, and the hand is prevented from being frostbitten.

Specifically, the method comprises the following steps: as shown in fig. 1 and 2, the screw hole 21 is located at the center of the cover plate 2.

In the above-mentioned design, through setting up screw 21 in the central authorities of apron 2, can make when the drainage carries out drainage convenience to the rivers in the valve body 1 more, make screw 21 pore wall receive 2 stresses all around of apron impartially simultaneously.

Specifically, the method comprises the following steps: as shown in fig. 2 and 3, a groove 23 concentric with the screw hole 21 is formed in the cover plate 2, a sealing ring 3 is sleeved on the bolt 22, and the sealing ring 3 is disposed in the groove 23.

In practical use, when the bolt 22 and the screw hole 21 block the cover plate 2, the sealing ring 3 is completely arranged in the groove 23, and the outer side of the sealing ring 3 is in close contact with the bolt 22 and the cover plate 2.

In the above design, by arranging the sealing ring 3, when the bolt 22 is in threaded connection with the cover plate 2 through the screw hole 21, the sealing ring 3 can effectively seal the joint of the bolt 22 and the cover plate 2.

In the following detailed description, it is to be understood that the above-described embodiments are merely exemplary of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (6)

1. The utility model provides a can prevent check valve of freeze damage, including being provided with open-ended valve body (1), set up case in valve body (1) and be used for with opening complex apron (2) of valve body (1), its characterized in that: the cover plate (2) is provided with a screw hole (21), and a bolt (22) is connected to the screw hole (21) in a threaded mode.

2. The check valve as claimed in claim 1, wherein: the hole diameter of the screw hole (21) is 5mm.

3. The check valve as claimed in claim 1, wherein: and an adjusting knob (4) is arranged at one end of the bolt (22) far away from the cover plate (2).

4. The check valve of claim 3, wherein: the surface layer of the adjusting knob (4) is provided with a rubber coating layer.

5. The check valve as claimed in claim 4, wherein: the screw hole (21) is positioned in the center of the cover plate (2).

6. The check valve as claimed in claim 1, wherein: be provided with on apron (2) with screw (21) concentric recess (23), the cover is equipped with sealing washer (3) on bolt (22), recess (23) are arranged in to sealing washer (3).

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