CN215636488U

CN215636488U - Steam trap

Info

Publication number: CN215636488U
Application number: CN202121244973.1U
Authority: CN
Inventors: 王烨
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-01-25
Anticipated expiration: 2031-06-04

Abstract

The utility model belongs to the technical field of a drain valve, in particular to a steam drain valve, which comprises a valve cover and a valve body, wherein a water inlet hole is formed in the valve cover, the valve body is provided with a drain hole, the valve cover is connected to the valve body, a lower accommodating cavity communicated with the drain hole is formed in the valve body, a valve block capable of moving up and down is arranged in the lower accommodating cavity, a floating ball capable of abutting against the drain hole is formed at the lower end of the valve block, a spring extending into the valve cover and abutting against the upper end of the valve block is further arranged in the lower accommodating cavity, and the floating ball has the tendency of blocking the drain hole due to the spring. The steam trap can discharge condensed water without dead angles, and improves the drainage efficiency.

Description

Steam trap

Technical Field

The utility model belongs to the technical field of drain valves, and relates to a steam drain valve.

Background

The steam trap is a valve for discharging condensed water in a heating device or a steam pipe and preventing leakage of steam, and has a function of blocking steam and discharging water. As an important part for draining condensed water to prevent water hammer in a steam pipeline, a steam trap generally needs to have a good drainage effect to ensure that the condensed water can be drained accurately and completely.

For example, CN200720128886.3 discloses a static bellows type drain valve, which comprises a valve body with an open cavity, a valve cover, a valve seat with a drain hole, a valve flap, and a bellows, wherein the valve seat is fixed on the drain hole in the cavity of the valve body through a threaded connection, the bellows is disposed in the cavity, one end of the bellows having a connection shaft is connected and fixed with the valve cover, the valve flap is screwed into a counter bore of a bellows plug through a screw thread and fixed at the other end of the bellows, and the center of the valve flap is aligned with the drain hole of the valve seat.

In the above-mentioned trap, the condensate water is discharged through the drain hole on the valve seat, but because the valve seat is connected on the drain port in the cavity of the valve body, the top height of the valve seat is higher than the height of the drain port, when the condensate water entering the valve body highly supports the height of the top end of the valve seat, the condensate water can not enter the drain hole of the valve seat, namely, the condensate water can not be discharged smoothly, and the above-mentioned trap can have obvious dead angle during water discharge, and can not discharge the condensate water effectively.

In view of the above problems, a steam trap can be designed to improve the drainage effect and allow the condensed water to be drained completely.

Disclosure of Invention

The utility model provides a steam trap, which has no dead angle in the drainage process and can realize accurate drainage of condensed water.

The purpose of the utility model is realized as follows:

a steam trap comprises a valve cover and a valve body, wherein a water inlet hole is formed in the valve cover, the valve body is provided with a drain hole, the valve cover is connected to the valve body, a lower accommodating cavity communicated with the drain hole is formed in the valve body, a valve block capable of moving up and down is arranged in the lower accommodating cavity, a floating ball capable of being supported on the drain hole is formed at the lower end of the valve block, a spring extending into the valve cover and supporting the upper end of the valve block is further arranged in the lower accommodating cavity, and the floating ball is enabled to have the tendency of blocking the drain hole.

Furthermore, a downward inclined drainage surface is formed in the valve body, and the drainage hole is formed in the drainage surface.

Further, the inclination angle of the drainage surface is 15 °.

Furthermore, floating liquid is arranged in the floating ball.

Furthermore, a convex body extending into the spring is formed at the upper end of the valve plate.

Furthermore, a sealing ring is connected between the valve cover and the valve body.

Furthermore, an upper cavity communicated with the lower cavity is formed in the valve cover, a filter disc is arranged in the upper cavity, and the spring is abutted between the valve plate and the filter disc.

Furthermore, a connecting part capable of being inserted into the lower cavity is formed on the valve cover, and a matched thread is formed between the lower cavity and the connecting part.

Furthermore, a covering part is formed on the valve cover, a matching part sleeved in the covering part is formed on the valve body, and a connecting piece penetrating through the covering part and the matching part is connected between the valve cover and the valve body.

Furthermore, the valve cover and the valve body form a sealing part which has the same shape and is abutted against each other, and a hoop sleeved on the abutted sealing part is connected between the valve cover and the valve body.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

1. in the steam trap, condensed water entering the steam trap can be directly discharged through the drain hole communicated with the lower cavity, and because the height difference does not exist between the drain hole and the drain surface, the condensed water does not have a dead angle when entering the drain hole, thereby realizing the accurate discharge of the condensed water

2. The downward inclined drainage surface improves the speed of the condensed water entering the drainage hole, and effectively improves the drainage efficiency of the steam trap.

3. There are multiple different connected modes between this steam trap's valve gap and the valve body, can satisfy the user demand under the different conditions, expanded this steam trap's use scene.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of the present invention.

Fig. 2 is a first perspective view of the present invention.

Fig. 3 is a second perspective view of the present invention.

1-valve cover, 11-water inlet hole, 12-upper cavity, 13-connecting part, 14-covering part, 15-sealing part, 2-valve body, 21-water outlet hole, 22-lower cavity, 23-water outlet surface, 24-matching part, 3-valve plate, 31-floating ball, 32-convex body, 4-spring, 5-sealing ring and 6-filtering piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The utility model will be further described in the following with reference to specific embodiments thereof,

as shown in fig. 1, a steam trap includes a valve cover 1 formed with a water inlet 11, and a valve body 2 formed with a water outlet 21, the valve cover 1 is connected to the valve body 2, a lower cavity 22 communicated with the water outlet 21 is formed in the valve body 2, a valve plate 3 capable of moving up and down is arranged in the lower cavity 22, a floating ball 31 capable of abutting against the water outlet 21 is formed at the lower end of the valve plate 3, a spring 4 extending into the valve cover 1 and abutting against the upper end of the valve plate 3 is further arranged in the lower cavity 22, and the floating ball 31 has a tendency of blocking the water outlet 21 by the spring 4. Specifically, in the steam trap, under the condition that water vapor does not flow, the floating ball 31 blocks the drain hole 21 under the condition that the spring 4 presses the valve plate 3, the water vapor enters the lower cavity 22 of the valve body 2 through the water inlet 11, after the water vapor is condensed in the lower cavity 22 to form condensed water, the condensed water is accumulated near the floating ball 31, the floating ball 31 is subjected to upward buoyancy in the condensed water, so that the valve plate 3 integrally moves upward, and meanwhile, the spring 4 is compressed, because of the floating ball 31, the drain hole 21 is not blocked by the floating ball 31, and the condensed water smoothly flows into the drain hole 21, so that the condensed water can flow out of the steam trap. The steam trap eliminates the dead angle of the condensed water when the condensed water flows out, so that the condensed water can accurately enter the drain hole 21 as long as the floating ball 31 floats.

As a modified example, a drain surface 23 inclined downward is formed in the valve body 2, and the drain hole 21 is formed on the drain surface 23. Specifically, the downward inclined drainage surface 23 can accelerate the speed of the condensed water flowing into the drainage hole 21, the drainage efficiency of the steam trap is improved, the condensed water directly flows into the drainage hole 21 through the drainage surface 23, and dead angles of the condensed water when flowing out are further eliminated.

As a modified example, the angle of inclination of the drainage surface 23 is 15 °. Specifically, when the inclination angle is 15 °, the flow rate of the condensed water flowing into the drain hole 21 from the drain surface 23 is optimal, and the height of the drain hole 21 is prevented from being too low while the flow rate of the condensed water is increased, so that the floating ball 31 of the valve plate 3 is prevented from normally blocking the drain hole 21.

As a modified embodiment, the floating ball 31 is internally provided with floating liquid. Specifically, the floating liquid in the float ball 31 is a liquid having a density lower than that of water, such as alcohol or silicone oil, and can help the float ball 31 to float when the float ball 31 intrudes condensed water.

As a modified example, the upper end of the valve plate 3 is formed with a convex body 32 extending into the spring 4. Specifically, the convex body 32 extends into the spring 4 to limit the spring 4 to a certain extent, so that the spring 4 is prevented from inclining, and the normal operation of the steam trap is further influenced.

As a modified embodiment, a sealing ring 5 is connected between the valve cover 1 and the valve body 2. Specifically, the sealing ring 5 can increase the sealing performance when the valve cover 1 is connected with the valve body 2, and the leakage of water vapor in the steam trap is avoided.

As an improved embodiment, an upper cavity 12 communicated with the lower cavity 22 is formed in the valve cover 1, a filter 6 is arranged in the upper cavity 12, and the spring 4 is abutted between the valve plate 3 and the filter 6. Specifically, the upper cavity 12 is communicated with the water inlet hole 11 on the valve cover 1, when water vapor enters the upper cavity 12 through the water inlet hole 11, namely, when the water vapor enters the inside of the steam trap, the filter sheet 6 can filter impurities in the water vapor, and the spring 4 presses the filter sheet 6 against the end surface in the upper cavity 12, so that a gap between the filter sheet 6 and the end surface in the upper cavity 12 is avoided, and further impurities are prevented from entering the inside of the steam trap.

As a modified embodiment, the valve cover 1 is formed with a connecting portion 13 that can be inserted into the lower cavity 22, and a matching thread is formed between the lower cavity 22 and the connecting portion 13. Specifically, one of the connection structures of the steam trap is that the connection part 13 is inserted into the lower cavity 22 in an aligned manner, and the valve cover 1 is screwed along the thread on the inner wall of the lower cavity 22, so that the valve cover 1 and the valve body 2 are tightly connected. At the moment, the sealing ring 5 is sleeved on the valve cover 1, enters the valve body 2 when the valve cover 1 is connected to the valve body 2, and abuts against the inner wall of the valve body 2.

As shown in fig. 2, a covering portion 14 is formed on the valve cover 1, a fitting portion 24 into which the covering portion 14 is fitted is formed on the valve body 2, and a connecting member passing through the covering portion 14 and the fitting portion 24 is connected between the valve cover 1 and the valve body 2. Specifically, one of the connection structures of the steam trap is that the covering part 14 on the valve cover 1 covers the matching part 24 on the valve body 2, and then a connecting piece passes through the covering part 14 and the matching part 24 to complete the fixation, wherein the connecting piece can be a bolt, a nut and the like. At this time, the seal ring 5 is embedded in the valve body 2, and when the covering portion 14 covers the matching portion 24, the valve cover 1 compresses the seal ring 5.

As shown in fig. 3, the valve cover 1 and the valve body 2 form a sealing portion 15 with the same shape and abutting against each other, and a clamp sleeved on the abutting sealing portion 15 is connected between the valve cover 1 and the valve body 2. Specifically, one of the connection structures of the steam trap is that after the sealing parts 15 with the same shape are the same, the clamp is locked after the sealing parts 15 which are butted against each other are sleeved by the clamp, so that the connection between the valve cover 1 and the valve body 2 is fixed. At this time, the sealing ring 5 is pressed between the sealing part 15 of the valve cover 1 and the valve body 2, and after the hoop is sleeved on the sealing part 15, the sealing ring 5 is compressed.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The steam trap comprises a valve cover and a valve body, wherein a water inlet hole is formed in the valve cover, the valve body is provided with a drain hole, the valve cover is connected to the valve body, a lower accommodating cavity is formed in the valve body and is communicated with the drain hole, a valve block capable of moving up and down is arranged in the lower accommodating cavity, a floating ball capable of being abutted to the drain hole is formed at the lower end of the valve block, a spring extending into the valve cover and abutting to the upper end of the valve block is further arranged in the lower accommodating cavity, and the spring enables the floating ball to have the tendency of blocking the drain hole.

2. The steam trap of claim 1 wherein said valve body has a downwardly inclined drain surface formed therein, said drain opening being formed in said drain surface.

3. The steam trap of claim 2 wherein the angle of inclination of the drainage surface is 15 °.

4. The steam trap of claim 1 wherein said floating ball contains a floating liquid.

5. The steam trap of claim 1 wherein the upper end of the valve plate defines a projection extending into the spring.

6. The steam trap of claim 1 wherein a seal is connected between the valve cover and the valve body.

7. The steam trap as recited in claim 1 wherein an upper cavity communicating with the lower cavity is formed in the valve cover, a filter is disposed in the upper cavity, and the spring is supported between the valve plate and the filter.

8. The steam trap of claim 1 wherein the valve cover defines a connector portion insertable into the lower chamber, and wherein mating threads are defined between the lower chamber and the connector portion.

9. The steam trap of claim 1 wherein the valve cover has a closure portion and the valve body has a mating portion that is received within the closure portion, and wherein a connector is coupled between the valve cover and the valve body and extends through the closure portion and the mating portion.

10. The steam trap of claim 1 wherein the valve cover and the valve body define a seal therebetween of the same shape, the seal abutting against the valve cover, and a band is coupled between the valve cover and the valve body and engaging the seal against the seal.