CN217178245U

CN217178245U - Float type drain valve

Info

Publication number: CN217178245U
Application number: CN202122996961.0U
Authority: CN
Inventors: 黄英; 蔡志广; 田继双; 陈玉帅
Original assignee: Dandong Zhongzhi Precision Technology Co ltd
Current assignee: Dandong Zhongzhi Precision Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-08-12
Anticipated expiration: 2031-11-30

Abstract

The utility model belongs to the technical field of a drain valve, and provides a floating ball type drain valve, which comprises a valve body and a valve cap which is fixedly arranged on the valve body in a sealing way, wherein the valve cap and the valve body form a cavity, a valve seat component and a floating ball valve core component are arranged in the cavity, an inlet channel communicated with the cavity is arranged at the bottom of the valve body, and an outlet channel is arranged at the top of the valve body; the valve seat assembly comprises a valve seat which is fixedly and hermetically arranged on the valve body, the valve seat is provided with a front cavity, a rear cavity and a water suction pipe, the front cavity is communicated with the cavity through the water suction pipe, the rear cavity is communicated with the outlet channel, a valve hole for communicating the front cavity with the rear cavity is formed in the valve seat, and an exhaust valve is further arranged on the valve seat; the valve core assembly comprises a floating ball, a connecting rod and a valve core, the valve core is rotatably arranged on the valve seat at the position of the valve hole, a semi-cylindrical notch is formed in the valve core, and the floating ball is connected with the valve core through the connecting rod. The utility model discloses can be according to the big or small automatically regulated flow size of condensate load, and can adapt to bigger pressure differential change operating mode, the practicality is strong.

Description

Float type drain valve

Technical Field

The utility model relates to a trap technical field especially relates to a flow automatically regulated's floating ball formula trap.

Background

Trap valves, also called automatic drains or condensate drains, are used in steam systems and in gas systems. The steam trap is arranged at the end of a pipeline heated by steam, has the function of continuously discharging condensed water in the steam heating pipeline to the outside of the pipeline, is a valve for automatically realizing the functions of steam resistance and water drainage, is a necessary energy-saving device of a steam heat source system, and has wide application.

The floating ball type drain valve utilizes the buoyancy principle to enable the floating ball to ascend and descend to achieve opening and closing of the valve, the valve hole of the floating ball type drain valve serves as a throttling and drainage channel, when condensate water is generated in a steam conveying pipe network and gas equipment, the floating ball ascends, the valve hole is opened to discharge the condensate water, after the condensate water is discharged, the floating ball descends, and the valve hole is closed, so that the purposes of blocking steam and draining water are achieved. However, in the existing floating ball type drain valve structure, the size of a valve hole is fixed, the flow capacity of the floating ball type drain valve structure does not change depending on the load, so that the operation of a system is not stable enough, the steam leakage amount is large, in addition, due to the limitation of the drain valve structure, the drain valve is sensitive to pressure when in operation, and after the pressure difference between the front and the back of the drain valve exceeds a certain value, the drain valve cannot normally act, so that the process system cannot normally operate.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-identified drawbacks of the prior art, the present inventors have conducted intensive studies and, after having paid a lot of creative efforts, have completed the present invention.

Particularly, the utility model discloses the technical problem that solve is: the utility model provides a floating ball formula trap to solve present floating ball formula trap structure, can't realize the automatically regulated of flow according to the load size, and can't effectively adapt to the technical problem that the pressure differential changes.

In order to solve the technical problem, the technical scheme of the utility model is that:

a floating ball type drain valve comprises a valve body and a valve cap which is fixedly and hermetically arranged on the valve body, wherein a cavity is formed by the valve cap and the valve body, a valve seat assembly and a floating ball valve core assembly are arranged in the cavity, an inlet channel communicated with the cavity is formed in the bottom of the valve body, and an outlet channel is formed in the top of the valve body;

the valve seat assembly comprises a valve seat which is fixedly and hermetically arranged on the valve body, the valve seat is provided with a front cavity, a rear cavity and a water suction pipe, the front cavity is communicated with the cavity through the water suction pipe, the rear cavity is communicated with the outlet channel, a valve hole for communicating the front cavity with the rear cavity is formed in the valve seat, and an exhaust valve for realizing the connection and disconnection of the rear cavity and the cavity is further arranged on the valve seat;

the valve core assembly comprises a floating ball, a connecting rod and a valve core, the valve core is rotatably arranged on the valve seat at the position of the valve hole, a semi-cylindrical notch is formed in the valve core, and the floating ball is connected with the valve core through the connecting rod.

As an improved technical scheme, the valve cap is fixedly installed on the valve body through a fastener, and the valve seat is fixedly installed on the valve body through a screw.

As an improved technical scheme, the suction inlet of the water suction pipe faces downwards and is arranged close to the bottom of the valve cap.

As an improved technical scheme, the exhaust valve is installed on the top of the valve seat.

As an improved technical scheme, the valve core is of a circular shaft-shaped structure, the notch is formed in the middle of the valve core, the connecting end of the valve core extends out of the valve seat, one end of the connecting rod is fixedly connected with the floating ball, and the other end of the connecting rod is fixedly connected with the connecting end of the valve core.

As an improved technical scheme, the bottom of the valve cap is provided with a plug in a threaded mode.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

(1) the floating ball type drain valve is simple in structure, when condensed water enters the cavity through the inlet channel, a liquid level is formed in the cavity, the floating ball floats to drive the valve core to rotate, the valve hole is opened, the condensed water enters the front cavity from the water suction pipe, enters the rear cavity from the front cavity through the valve hole and is finally discharged through the outlet channel; and this trap structure, the height of floating of floater is decided to the height of liquid level in its cavity, the floater goes up and down to drive the case and rotates, change the flow area of disk seat valve opening, thereby make this trap possess the function that can be according to the big or small automatically regulated flow size of load, in addition, because the case rotates and installs on the disk seat, only need overcome less frictional force alright drive case rotation when making the floater fluctuate, realize that the valve opening is opened and close and the regulation and control of circulation size, therefore make this trap can adapt to bigger pressure differential change operating mode, therefore, the clothes hanger is strong in practicability.

(2) The suction inlet of the water suction pipe faces downwards and is arranged close to the bottom of the valve cap, so that condensed water entering the cavity can be conveniently discharged.

(3) The exhaust valve is arranged on the valve seat, when the drain valve works, the exhaust valve is in an open state, the condensed water enters the cavity from the inlet channel, the air in the cavity is discharged from the cavity after entering the rear cavity through the exhaust valve, timely automatic exhaust is realized, the internal and external pressure difference of the cavity is balanced, the condensed water convenient to flow into the cavity, the exhaust valve is arranged at the top of the valve seat, the air in the cavity is more convenient to discharge as much as possible, and after the exhaust is finished, the exhaust valve is closed.

(4) The jam that valve cap bottom screw thread was installed, the jam of unscrewing can clear up the impurity in the cavity, through periodic impurity clearance, avoids influencing the normal work of this trap because of impurity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

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

fig. 2 is a schematic structural view of the valve element of the present invention;

FIG. 3 is a schematic structural view of the utility model when the condensed water enters the cavity;

FIG. 4 is a schematic structural view of the present invention in a low load state of condensed water;

FIG. 5 is a schematic structural view of the present invention showing the load state of the condensate water;

FIG. 6 is a schematic structural view of the present invention in a high load state;

reference numerals: 1-a valve body; 101-an inlet channel; 102-an outlet channel; 2-valve cap; 3-a fastener; 4-a cavity; 5-valve seat; 501-a suction pipe; 502-anterior chamber; 503-rear cavity; 504-valve hole; 6-a screw; 7-an exhaust valve; 8-floating ball; 9-a connecting rod; 10-a valve core; 1001-notch; 11-clogging.

Detailed Description

The invention will be further described with reference to specific examples. The use and purpose of these exemplary embodiments are to illustrate the invention, not to limit the scope of the invention in any way, and not to limit the scope of the invention in any way.

As shown in fig. 1, the present embodiment provides a ball float trap, which includes a valve body 1 and a bonnet 2 fixedly mounted on the valve body 1 by a fastener 3 in a sealing manner, the bonnet 2 and the valve body 1 form a cavity 4, a seat assembly and a ball float core assembly are disposed in the cavity 4, an inlet passage 101 communicated with the cavity 4 is disposed at the bottom of the valve body 1, and an outlet passage 102 is disposed at the top of the valve body.

In this embodiment, the fastening member 3 includes a mounting bolt and a mounting nut, and the bonnet 2 is fixedly mounted on the valve body 1 through the mounting bolt and the mounting nut.

The valve seat assembly comprises a valve seat 5 fixedly installed on the valve body 1 in a sealing mode and an exhaust valve 7 installed on the valve seat 5, the valve seat 5 is provided with a water suction pipe 501, a front cavity 502 and a rear cavity 503, the front cavity 502 is communicated with the cavity 4 through the water suction pipe 501, the rear cavity 503 is communicated with the outlet channel 102, the valve seat 5 is further provided with a valve hole 504 communicated with the front cavity 502 and the rear cavity 503, and the exhaust valve 7 is used for achieving the connection and disconnection of the rear cavity 503 and the cavity 4.

In this embodiment, valve seat 5 passes through 6 fixed mounting of screw on valve body 1, and the installation is firm, and the dismouting of the valve seat 5 of being convenient for is maintained.

The valve core assembly comprises a floating ball 8, a connecting rod 9 and a valve core 10, the valve core 10 is rotatably mounted on the valve seat 5 at the position of the valve hole 504, and a semi-cylindrical notch 1001 is formed in the valve core 10, as shown in fig. 2, the floating ball 8 is connected with the valve core 10 through the connecting rod 9.

In this embodiment, the suction inlet of the suction pipe 501 is facing downward and is disposed near the bottom of the bonnet 2, so as to facilitate discharging the condensed water entering the cavity 4.

In this embodiment, the exhaust valve 7 is installed on the top of the valve seat 5, and an outlet of the exhaust valve 7 is communicated with the rear cavity 503, and the exhaust valve 7 may be a commercially available product, which is not described herein; this trap during operation, discharge valve 7 is in the open mode, along with the condensate water gets into cavity 4 from entrance way 101, the air in cavity 4 is discharged after cavity 503 from cavity 4 entering through discharge valve 7, realize timely automatic exhaust, the inside and outside pressure differential of balanced cavity 4, the condensate water of being convenient for flows into in cavity 4, and discharge valve 7 installs in the top of disk seat 5, be convenient for more discharge the air in cavity 4 as far as, the back that finishes of exhausting, discharge valve 7 closes.

In this embodiment, the valve hole 504 has a certain length and width to meet the drainage requirement when the cavity 4 is under high load; the valve core 10 is a circular shaft-shaped structure, the notch 1001 is formed in the middle of the valve core 10, as shown in fig. 2, the connecting end of the valve core 10 extends out of the valve seat 5, one end of the connecting rod 9 is fixedly connected with the floating ball 8, the other end of the connecting rod 9 is fixedly connected with the connecting end of the valve core 10, the floating ball 8 goes up and down to drive the valve core 10 to rotate, and the on-off and flow volume automatic adjustment between the front cavity 502 and the rear cavity 503 is realized.

In this embodiment, the bottom threaded mounting of valve cap 2 has blockking up 11, and plug 11 screws off, can clear up the impurity in the cavity 4, through periodic impurity clearance, avoids influencing this trap's normal work because of impurity.

The working principle is as follows:

when there is no condensed water, as shown in fig. 1, the float 8 is positioned at the lower portion of the cavity 4, and at this time, the non-notched portion of the valve body 10 contacts the valve hole inner wall of the valve seat 5, closing the valve hole 504.

When the process system produces condensed water, the condensed water enters the cavity 4 through the inlet channel 101 to form a liquid level, and the floating ball 8 gradually floats up as shown in fig. 3. The condensed water continues to enter the cavity 4, when the floating ball 8 floats to the position shown in fig. 4, the valve core 10 rotates clockwise along with the floating of the floating ball 8 to the position of the notch 1001 to be communicated with the valve hole 504 of the valve seat 5, so as to form a micro channel, at this time, the condensed water enters the front cavity 502 from the water suction pipe 501, enters the rear cavity 503 from the front cavity 502 through the micro channel, and finally flows out from the outlet channel 102.

When the load of the condensed water is increased, the liquid level in the cavity 4 is gradually increased to drive the floating ball 8 to continuously float upwards, as shown in fig. 5, the floating ball 8 drives the valve core 10 to continuously rotate clockwise, a channel formed between the notch 1001 of the valve core 10 and the valve hole 504 of the valve seat 5 is enlarged, more condensed water can flow out from the channel, that is, the outflow volume of the condensed water is increased along with the increase of the load of the condensed water.

If the load of the condensed water is increased continuously, the water level in the cavity 4 rises to the highest level, the floating ball 8 continuously floats to the highest level, the valve core 10 is driven to rotate clockwise continuously, and a channel formed between the notch 1001 of the valve core 10 and the valve hole 504 of the valve seat 5 is maximized, as shown in figure 6, at the moment, the outflow volume of the condensed water is maximized, and the condensed water with high load is discharged in time.

This floater formula trap valve based on above-mentioned structure, simple structure, the height of the height decision floater 8 of liquid level in its cavity 4 floats highly, along with the increase or the reduction of condensate water load, then the liquid level in the cavity 4 risees gradually or reduces, drives floater 8 and floats or falls down, and then drives case 10 clockwise or anticlockwise rotation, and the passageway grow or diminish that form between the valve opening of case 10 and disk seat 5 to the realization carries out the automatically regulated of flow size according to the condensate water load size.

In addition, because the valve core 10 is rotatably installed on the valve seat 5, the valve core 10 can be driven to rotate only by overcoming smaller friction force when the floating ball 8 floats up and down, the opening and closing of the valve hole and the regulation and control of the flow volume are realized, and therefore the drain valve can adapt to larger pressure difference change working conditions and is strong in practicability.

It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.

Claims

1. A floating ball type drain valve is characterized in that: the valve comprises a valve body and a valve cap which is fixedly arranged on the valve body in a sealing mode, wherein the valve cap and the valve body form a cavity, a valve seat assembly and a ball float valve core assembly are arranged in the cavity, an inlet channel communicated with the cavity is formed in the bottom of the valve body, and an outlet channel is formed in the top of the valve body;

2. The floating ball trap of claim 1 wherein: the valve cap is fixedly installed on the valve body through a fastener, and the valve seat is fixedly installed on the valve body through a screw.

3. The floating ball trap of claim 2 wherein: the suction inlet of the water suction pipe faces downwards, and is close to the bottom of the valve cap.

4. The floating ball trap of claim 3 wherein: the exhaust valve is mounted on the top of the valve seat.

5. The floating ball trap of claim 4 wherein: the valve core is of a round shaft-shaped structure, the notch is formed in the middle of the valve core, the connecting end of the valve core extends out of the valve seat, one end of the connecting rod is fixedly connected with the floating ball, and the other end of the connecting rod is fixedly connected with the connecting end of the valve core.

6. The floating ball trap of any one of claims 1-5 wherein: the bottom thread of the valve cap is provided with a plug.