CN210009388U - Cross valve of drainage system - Google Patents

Abstract

The utility model provides a cross valve for a drainage system, which comprises a valve body and a valve core. The valve body is composed of a vertical pipe and a horizontal pipe. In cooperation with the inner cavity of the transverse tube, an annular groove is provided on the side wall of the middle and front part of the valve core, the inner surfaces of both ends of the transverse tube are provided with annular limiting grooves, and the annular limiting groove is provided with an annular groove. A sealing ring, both ends of the valve core are provided with a first blocking device and a second blocking device. The beneficial effect of the utility model is due to the adoption of the above-mentioned technical scheme, which has the advantages of simple structure and good sealing effect. When the use environment is relatively bad, it is ensured that no leakage occurs at the sealing part in the static and moving states, and it is very convenient for the operator. It can effectively reduce the risk of liquid leakage during operation.

Description

Drainage system cross valve

technical field

The utility model relates to the field of medical instruments, in particular to a cross valve of a drainage system.

Background technique

The drain valve of the liquid storage bag in the existing drainage system is mainly a cross valve, which is widely used due to its simple structure and low cost. However, in use, it was found that when the on-off valve switch was repeatedly pushed left and right, and the external ambient temperature was affected, a small amount of liquid in the liquid storage bag was easily removed from the horizontal pipe of the cross valve when the on-off valve was pushed left and right Spill, because the liquid discharged by the patient often contains germs, it is easy to soil the hands, which brings hygienic problems to the operator.

Utility model content

The purpose of the utility model is to provide a cross valve with simple structure, good sealing performance, and no leakage at the sealing part in static and moving states.

The technical scheme of the utility model is: a cross valve for a drainage system, comprising a valve body and a valve core, the valve body is composed of a vertical pipe and a horizontal pipe, and the horizontal pipe and the vertical pipe are crossed and connected as a whole, The upper end of the vertical pipe is a liquid inlet, the lower end is a liquid outlet, and the inner cavity of the transverse pipe is connected with the liquid inlet and outlet of the vertical pipe respectively, the valve core is matched with the inner cavity of the transverse pipe, and the valve The core is pushed back and forth in the inner cavity of the transverse tube and along the direction defined by it, and the valve core can be in the inner cavity of the transverse tube. An annular limiting groove is arranged on the inner surface, and an annular sealing ring is arranged in the annular limiting groove. Both ends of the valve core are provided with blocking devices, and the blocking devices at both ends are a first blocking device and a second sealing device. The function of the blocking device is to prevent the valve core from coming out due to excessive force.

When the valve handle is pulled back or the valve core is pushed from the protruding end in front of the valve core, and the valve core is pulled to the rear end of the inner cavity of the transverse tube, the annular groove is connected to the liquid inlet and outlet at the same time. , the liquid flow channel is opened; when the valve handle is pushed forward and the valve core is pushed to the front end of the inner cavity of the transverse tube, the annular groove is staggered from the liquid inlet and outlet, and the liquid flow channel is closed.

The length of the valve core is greater than the length of the lateral tube of the valve body, and the front end of the valve core can extend out of the lateral tube of the valve body, so the valve handle can be pushed forward, the valve handle can be pulled backward, or the valve handle can be pulled out from the front of the valve core. The protruding end pushes the valve core to make the valve core slide in the lateral tube. When the valve core is pushed to the front end of the inner cavity of the lateral tube, the annular groove is connected with the liquid inlet and the liquid outlet at the same time. The liquid can flow out; when the valve core is pushed to the rear end of the inner cavity of the transverse tube, the annular groove is staggered from the liquid inlet and the liquid outlet.

It is further limited that the cross-section of the annular sealing ring is Y-shaped, and has an annular upper end surface and a lower end surface opposite to it. The outer side of the annular groove is provided with an outer lip, and the inner side of the oil seal body close to the upper end surface is provided with an annular protruding ring,

Under static sealing or motion, the protruding ring is elastically deformed, causing contact pressure on the sealing contact surface. The contact pressure is greater than the internal pressure of the sealed medium, blocking the liquid flow channel. At this time, the liquid in the drainage bag cannot flow out, then No leakage occurs.

It is further defined that the cross section of the protruding ring is in the shape of a ridge, and in a static sealing or moving state, the contact pressure on the sealing contact surface is concentrated on the top of the protruding ring that is in contact with the contact surface.

It is further defined that the ratio of the height on the center line of the cross section of the protruding ring to the inner diameter of the upper end face side of the annular sealing ring is 1:45-55.

Further defined, the outer diameters of the ends of the first blocking device and the second blocking device are larger than the inner diameter of the transverse tube.

Further limited, the ratio of the outer diameter of the annular groove on the valve core to the inner diameter of the vertical pipe is 1-7:10, and the ratio of the height of the annular groove in the lateral direction to the inner diameter of the vertical pipe is 1-3: 2.

Further limited, the length of the valve core is 4-10 mm longer than the length of the transverse tube.

The advantages and positive effects of the utility model are: due to the adoption of the above-mentioned technical scheme, the technical scheme has the advantages of simple structure and good sealing effect, and when the use environment is relatively bad, it is ensured that there will be no leakage phenomenon at the sealing place under static and moving states. , which can effectively reduce the risk of liquid leakage during operation for the operator.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of the present utility model

Figure 2 is a schematic view of the cross-sectional structure of the annular sealing ring

In the picture:

1. Valve body 2. Valve core 3. Ring seal

4. The first blocking device 5. The second blocking device 11. The vertical pipe

12. Transverse tube 31, annular groove 32, inner lip

33. Outer lip 34. Protruding ring

Detailed ways

As shown in Figures 1-2, the present utility model is a cross valve for a drainage system, comprising a valve body 1 and a valve core 2, the valve body 1 is composed of a vertical pipe 11 and a horizontal pipe 12, the horizontal pipe 12 is connected to The vertical pipes 11 cross and are connected as a whole, the upper end of the vertical pipe 11 is a liquid inlet, the lower end is a liquid outlet, and the inner cavity of the horizontal pipe 12 is connected with the liquid inlet and outlet of the vertical pipe 11 respectively. , the valve core 2 is matched with the inner cavity of the transverse tube 12, the valve core 2 pushes back and forth in the inner cavity of the transverse tube 12 and along the direction defined by it, and an annular recess is provided on the middle front side wall of the valve core 2 The inner surfaces of the two ends of the transverse tube 12 are provided with annular limiting grooves, and annular sealing rings 3 are arranged in the annular limiting grooves. Both ends of the valve core 2 are provided with first blocking devices 4, The second blocking device 5 , when the rear handle of the valve core 2 is pulled backward or the valve core 2 is pushed from the protruding end in front of the valve core 2 to pull the valve core 2 to the rear end of the inner cavity of the transverse tube 12 , The annular groove is connected to the liquid inlet and outlet at the same time, and the liquid flow channel is opened; when the rear handle of the valve core 2 is pushed forward or the valve core 2 is pushed to the front end of the inner cavity of the transverse tube 12, the annular groove is opened. Staggered from the liquid inlet and outlet, the liquid flow channel is closed.

The cross-section of the annular sealing ring 3 is Y-shaped, and has an annular upper end surface and a lower end surface opposite to it. An outer lip 33 is provided on the outer side of the annular groove 31 on the end face, and an annular protruding ring 34 is provided on the inner side of the oil seal body close to the upper end surface. The cross section of the protruding ring 34 is a ridge shape.

The ratio of the height on the center line of the cross section of the protruding ring 34 to the inner diameter of the upper end surface of the annular sealing ring 3 is 1:50.

The outer diameters of the ends of the first blocking device 4 and the second blocking device 5 are larger than the inner diameter of the transverse tube 12 .

The outer diameter of the annular groove on the valve core 2 is 2mm, the length of the annular groove is 5mm, the outer diameter of the annular groove on the valve core 2 is 1:5 of the inner diameter of the vertical pipe, and the annular groove The ratio of the lateral height to the inner diameter of the vertical pipe is 1:1.

The length of the valve core 2 is 6 mm longer than the length of the transverse tube 12 .

An embodiment of the present invention has been described in detail above, but the content is only a preferred embodiment of the present invention, and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present utility model should still belong to the scope of the patent of the present utility model.

Claims (6)

1. The utility model provides a drainage system cross valve, includes valve body (1) and case (2), valve body (1) comprises vertical pipe (11) and horizontal pipe (12), horizontal pipe (12) intersect and even as an organic whole with vertical pipe (11) cross, vertical pipe (11) upper end is the inlet, and the lower extreme is the liquid outlet to horizontal pipe (12) inner chamber and vertical pipe (11) inlet and liquid outlet switch-on respectively, case (2) cooperate with the inner chamber of horizontal pipe (12), are provided with annular groove on the well anterior lateral wall of case (2), its characterized in that: the inner surfaces of two ends of the transverse pipe (12) are provided with annular limiting grooves, annular sealing rings (3) are arranged in the annular limiting grooves, and two ends of the valve core (2) are provided with first plugging devices (4) and second plugging devices (5).

2. The drainage system cross valve of claim 1, wherein: the cross-section of ring type seal ring (3) is Y shape, has an annular up end to and rather than relative lower terminal surface, be provided with ring channel (31) down on the terminal surface, the inboard of lower terminal surface ring channel (31) is equipped with interior lip (32), and the outside of lower terminal surface ring channel (31) is equipped with outer lip (33), the inboard that ring type seal ring (3) are close to the up end is equipped with annular protruding circle (34), the cross-section of protruding circle (34) is the ridge shape.

3. The drainage system cross valve of claim 2, wherein: the ratio of the height of the center line of the cross section of the protruding ring (34) to the inner diameter of the upper end face side of the annular sealing ring (3) is 1: 45-55.

4. The drainage system cross valve of claim 1, wherein: the outer diameter of the first plugging device (4) and the second plugging device (5) is larger than the inner diameter of the transverse tube (12).

5. The drainage system cross valve of claim 1, wherein: the ratio of the outer diameter of the annular groove on the valve core (2) to the inner diameter of the vertical pipe is 1-7: 10, the ratio of the transverse height of the annular groove to the inner diameter of the vertical pipe is 1-3: 2.

6. the drainage system cross valve of claim 1, wherein: the length of the valve core (2) is 4-10 mm longer than that of the transverse pipe (12).

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