CN203309503U - Drain valve - Google Patents

Abstract

The utility model discloses a drain valve. The drain valve comprises a valve body, a valve seat, a valve plate and a bonnet, wherein an opening is formed in the upper portion of the valve body, the valve seat, the valve plate and the bonnet are arranged inside the opening in sequence from bottom to top, the valve seat is arranged in the opening of the valve body, a through hole is formed in the middle of the valve seat, a circle of drain groove is further formed in the periphery of the through hole, the drain groove is communicated to a water outlet of the drain valve, the outer diameter of the outer edge of the upper portion of the valve seat is small, a step is formed on the upper portion of the valve seat, the valve plate covers the upper portion of the valve seat, the outer diameter of the valve plate is equal to or slightly larger than the small outer diameter of the upper portion of the valve seat, the outer diameter of the lower portion of the bonnet is small, a step is formed on the lower portion of the bonnet, the step buckles the opening of the valve body, a groove is formed in the lower portion of the bonnet, the height of the groove is larger than that of the valve plate, and the outer edge of the groove exactly corresponds to the step of the valve seat. Due to the fact that according to the drain valve, the bonnet is used for replacing an inner cover and an outer cover of an existing drain valve, material consumption is reduced, the processing cycle is shortened, and processing cost is reduced.

Description

A kind of drain valve

Technical field

The utility model belongs to valve technology field, specifically, is about a kind of drain valve.

Background technique

As shown in Figure 1, for having the structure sectional view of drain valve now.As shown in the figure, this drain valve comprises valve body 10, the top of valve body 10 is provided with opening 11, the inside of this opening 11 from bottom to top is provided with valve seat 12, valve block 13, inner cap 14 and enclosing cover 15 successively, and wherein, described valve seat 12De center is provided with circular hole 121, the periphery of circular hole 121 is provided with again a circle rhone 122, this rhone 122 is communicated to the water outlet 16 of drain valve, and the reduced diameter of the outer rim on valve seat 12 tops, to form a step 123; Described valve block 13 is covered on the top of valve seat 12, and its external diameter equals or is slightly larger than the less external diameter in valve seat 12 tops; The cross section of described inner cap 14 is the cap type, and below is provided with a groove 141, and its height is higher than valve block 13, and the bottom 142 of inner cap 14 outer rims is fastened on the step 123 of described valve seat 12 just; The cross section of described enclosing cover 15 is similarly the cap type, is covered on the outer rim of valve body 10 openings 11.

The drain valve of this kind structure, because component on its structure are more, process relatively loaded down with trivial detailsly, and cost also can be relatively high, therefore is necessary to be improved.

The model utility content

The purpose of this utility model just is to improve the said structure of existing drain valve, thereby a kind of improved drain valve is provided, and structure is more simplified, and to reduce consumptive material, to reduce the process-cycle, cuts down finished cost.

For achieving the above object, drain valve of the present utility model comprises:

Valve body, top is provided with opening, and the inside of this opening from bottom to top is provided with valve seat, valve block and valve gap successively;

Valve seat, be arranged in the opening of valve body, and centre is provided with through hole, and the periphery of through hole is provided with again a circle rhone, and this rhone is communicated to the water outlet of drain valve, and the external diameter of the outer rim on valve seat top is less, to form a step;

Valve block, be covered on the top of valve seat, and its external diameter equals or is slightly larger than the less external diameter in valve seat top;

Valve gap, the external diameter of bottom is less, and to form a step, this step is fastened on the opening of valve body, and the below of valve gap is provided with a groove, and the height of this groove is higher than the height of valve block, and the outer rim of this groove is just in time corresponding to the step of described valve seat.

Drain valve of the present utility model has replaced inner cap and the enclosing cover of existing drain valve with a valve gap, thereby has saved consumptive material, reduced the process-cycle, and has reduced processing cost.

The accompanying drawing explanation

Fig. 1 is the structure sectional view of existing drain valve.

Fig. 2 is the structure sectional view of drain valve of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, with specific embodiment, drain valve of the present utility model is described in further detail.Should be understood that following examples are only be used to the utility model is described but not be used to limiting scope of the present utility model.

As shown in Figure 2, be the structure sectional view of drain valve of the present utility model.As seen from the figure, drain valve of the present utility model comprises:

Valve body 20, top are provided with opening 21, and the inside of this opening 21 from bottom to top is provided with valve seat 30, valve block 40 and valve gap 50 successively;

Valve seat 30, be arranged in the opening 21 of valve body 20, and centre is provided with through hole 22, and the periphery of through hole 22 is provided with again a circle rhone 23, and this rhone 23 is communicated to the water outlet 60 of drain valve, and the external diameter of the outer rim on valve seat 30 tops is less, to form a step 24;

Valve block 40, be covered on the top of valve seat 30, and its external diameter equals or is slightly larger than the less external diameter in valve seat 30 tops;

Valve gap 50, the external diameter of bottom is less, to form a step 51, this step 51 is fastened on the opening 21 of valve body 20, and the below of valve gap 50 is provided with a groove 52, and the height of this groove 52 is higher than the height of valve block 40, so that valve block 40 can upwards be backed down, thereby allow isolated water to flow into the rhone 23 on through hole 22 sides, and then discharge from water outlet 60, and the outer rim 53 of this groove 52 is just in time corresponding to the step 24 of described valve seat 30.

Compare existing drain valve, drain valve of the present utility model has replaced original inner cap and enclosing cover with a valve gap, thereby has saved consumptive material, reduced the process-cycle, and has reduced processing cost.

Claims (1)

1. drain valve is characterized in that comprising:

Valve body, top is provided with opening, and the inside of this opening from bottom to top is provided with valve seat, valve block and valve gap successively;

Valve seat, be arranged in the opening of valve body, and centre is provided with through hole, and the periphery of through hole is provided with again a circle rhone, and this rhone is communicated to the water outlet of drain valve, and the external diameter of the outer rim on valve seat top is less, to form a step;

Valve block, be covered on the top of valve seat, and its external diameter equals or is slightly larger than the less external diameter in valve seat top;

Valve gap, the external diameter of bottom is less, and to form a step, this step is fastened on the opening of valve body, and the below of valve gap is provided with a groove, and the height of this groove is higher than the height of valve block, and the outer rim of this groove is just in time corresponding to the step of described valve seat.

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