CN205401839U - Novel check valve - Google Patents

Abstract

The utility model discloses a novel check valve, which comprises a valve body and a valve core, the valve core is arranged in a valve cavity of the valve body, one end of the valve body is an inlet connected with the valve cavity, and the other end of the valve body is The valve core is an outlet connected to the valve cavity, and the valve core is a flap valve core hinged in the valve body, and the flap valve core can be turned over toward the outlet of the valve body. The spool of the check valve is a flap, which is simple in structure, easy to maintain and low in cost; the inside of the valve body and the outside of the spool are provided with a rubber lining, the wear of the valve body and spool is small, and the service life is long. The flipping impact is small, the sealing is good, and it is stable and reliable.

Description

A new check valve

technical field

The utility model relates to the technical field of valves, in particular to a novel check valve.

Background technique

The existing check valve has complex structure, cumbersome manufacture, high cost, and is not easy to maintain; and the existing check valve has poor sealing performance, and the internal parts of the valve are easily damaged after long-term use, resulting in check failure and affecting normal use. It is stable and reliable Poor sex.

Utility model content

Aiming at the deficiencies of the existing technology, the technical problem to be solved by the utility model is to provide a new type of check valve to achieve the purpose of simple structure and stable and reliable use.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of check valve, including a valve body and a valve core, the valve core is arranged in the valve cavity of the valve body, and one end of the valve body is connected to the The valve cavity is connected to the inlet, and the other end of the valve body is the outlet connected to the valve cavity. The valve core is a flap valve core hinged in the valve body, and the flap valve core can be turned over to the outlet of the valve body. .

The valve body includes a valve body I and a valve body II, and the valve body I and the valve body II are matched through flange surfaces.

The inner wall of the valve body is provided with a valve body rubber lining layer.

The flap valve core is provided with a valve core lining rubber layer.

The flap valve core is hinged in the valve body through a rotating shaft, and a torsion spring is arranged on the rotating shaft.

The inlet is arranged on the valve body II, the outlet is arranged on the valve body I, and the flap valve core is hinged on the flange surface of the valve body II.

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

The spool of the check valve is a flap, which is simple in structure, easy to maintain, and low in cost; the inside of the valve body and the outside of the spool are provided with a rubber lining, the wear of the valve body and spool is small, and the service life is long. The flipping impact is small, the sealing is good, and it is stable and reliable.

Description of drawings

The following is a brief description of the content expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is a sectional view of the utility model check valve.

In the figure: 1. Valve body Ⅰ, 2. Valve body Ⅱ, 3. Shaft, 4. Flap valve core, 5. Flange, 6. Valve body Ⅰ rubber lining layer, 7. Valve core rubber lining layer, 8. Valve body II rubber lining.

detailed description

The specific implementation of the present utility model will be described in further detail below by describing the embodiments with reference to the accompanying drawings.

As shown in Figure 1, the new check valve includes a valve body and a valve core. The valve core is set in the valve cavity of the valve body. The body I1 is located above the valve body II2, the valve body I is located above, and the valve body II is located below. The valve body I and the valve body II are matched through the flange surface, and the bolts are fastened through the flange surface between the upper and lower valve bodies.

The lower end of the valve body is the inlet connected with the valve cavity, and the upper end of the valve body is the outlet connected with the valve cavity, the flow direction of the medium is from bottom to top, and the medium is non-return from top to bottom.

The valve core is the flap valve core 4 hinged in the valve body. The flap valve core 4 can be turned over to the outlet direction of the valve body. The flap valve core is blocked downward by the flange surface of the upper part of the valve body II. Part of the flange surface is located in the valve cavity of the valve body.

The flap valve core 4 is hinged to the flange surface of the upper part of the valve body II through the rotating shaft 3. The flap valve core can be placed in a horizontal state when it is lowered. The flap valve core is sealed with the flange surface of the upper part of the valve body II. Seal the channel in the lower valve body II, and the lower part of the valve body II 2 is provided with a flange 5 connected to the medium pipeline to achieve the check of the medium fluid; the medium fluid can smoothly open the flap valve core from bottom to top.

A torsion spring is arranged on the rotating shaft 3, and under the action of the torsion force of the torsion spring, the flap valve core is automatically turned down to cooperate with the flange surface in the valve cavity of the lower valve body. The check valve can also be placed horizontally through the setting of the torsion spring, and the check effect can also be realized. In the absence of a torsion spring, the flap valve core is flushed down by gravity or fluid, and the flap valve core is lowered to seal, so as to realize the fluid non-return.

The inner wall of the valve body is provided with a rubber lining layer of the valve body. Specifically, the inner wall of the valve body I is provided with a rubber lining layer 6 of the valve body I, and the inner wall of the valve body II is provided with a rubber lining layer 8 of the valve body II. A valve core rubber lining layer 7 is provided outside the valve core. The wear of the valve body and the valve core is small, the impact of the valve core turning is small, and the service life is long. The rubber lining layer makes the flap valve core and the flange surface of the lower valve body in flexible contact, the sealing effect of the flexible seal is better, and the precision requirement for the flap valve core is reduced, the manufacturing process is simple, and the cost is low.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various insubstantial improvements made by the idea and technical solutions of the utility model are adopted, or there is no Those who directly apply the idea and technical solution of the utility model to other occasions through improvement are within the protection scope of the utility model.

Claims (6)

1. A novel check valve, comprising a valve body and a spool, the spool being arranged in the valve chamber of the valve body, characterized in that: one end of the valve body is an inlet connected to the valve chamber, and the valve body is another One end is an outlet communicating with the valve chamber, the valve core is a flap valve core hinged in the valve body, and the flap valve core can be turned over toward the outlet of the valve body. 2. The novel check valve according to claim 1, wherein the valve body includes a valve body I and a valve body II, and the valve body I and the valve body II are matched through a flange surface. 3. The novel check valve according to claim 1, characterized in that: the inner wall of the valve body is provided with a valve body rubber lining. 4. The novel check valve according to claim 1, characterized in that: the flap valve core is provided with a valve core lining rubber layer. 5. The novel check valve according to claim 1, characterized in that: the flap valve core is hinged in the valve body through a rotating shaft, and a torsion spring is arranged on the rotating shaft. 6. The new check valve as claimed in claim 2, characterized in that: the inlet is set on the valve body II, the outlet is set on the valve body I, and the flap valve core is hinged on the flange surface of the valve body II.