Dish-shaped metal liquid bag of drain valve

Abstract

The utility model belongs to the field of drain valve accessories, and relates to a dish-shaped metal liquid bag of a drain valve, the dish-shaped metal liquid bag comprises an upper cover and an elastic steel sheet, the dish-shaped metal liquid bag further comprises a base, the elastic steel sheet and the base are both of a wafer structure, the elastic steel sheet is arranged between the upper cover and the base, a closed space is formed between the elastic steel sheet and the upper cover, and a temperature sensing solution is arranged in the closed space; a sealing bead is fixed on the elastic steel sheet, the middle part of the base is inclined downwards and is provided with a drain hole, the sealing bead is arranged towards the drain hole and can extend out of the drain hole, and the device has the advantages that the structure is simple, a three-layer structure is adopted, and the elastic steel sheet is protected by limiting the elastic steel sheet through the base.

Description

Technical Field

[0001] The invention belongs to the field of steam trap accessories and relates to a disc-shaped metal liquid bag of a steam trap. Background Art

[0002] The steam trap is also called an automatic drain or condensate drain. It is installed on the steam-heated pipeline and can automatically drain condensate. The disc-shaped metal liquid capsule is used as the switch of the steam trap, which plays a role of high-temperature sealing and draining condensate.

[0003] The traditional disc-shaped metal liquid bag has only two structures, the upper cover and the elastic steel sheet. During use, the elastic steel sheet reciprocates and contracts, expands and deforms for a long time, and the elastic steel sheet and the upper cover are prone to cracks and damage. Summary of the invention

[0004] In view of the above problems, the present invention provides a disc-shaped metal liquid bag of a steam trap, which has the advantages of simple structure, adopting a three-layer structure, and limiting the elastic steel sheet through the base to protect the elastic steel sheet.

[0005] The object of the present invention is achieved in that:

[0006] A disc-shaped metal liquid bag of a steam trap comprises an upper cover and an elastic steel sheet, and also comprises a base, wherein the elastic steel sheet and the base are both disc structures, the elastic steel sheet is arranged between the upper cover and the base, and a closed space is formed between the elastic steel sheet and the upper cover, and a temperature-sensitive solution is arranged in the closed space; a sealing bead is fixed on the elastic steel sheet, the middle part of the base is arranged to be tilted downward and is formed with a drainage hole, the sealing bead is arranged toward the drainage hole and can extend out of the drainage hole.

[0007] The setting of the base can protect and limit the elastic steel sheet. First, it can prevent the elastic steel sheet from directly contacting the water outlet of the steam trap. The force area of ​​its sealed contact is increased by the base, thereby reducing the pressure and playing a protective role. Second, it can limit the deformation of the elastic steel sheet and prevent the elastic steel sheet from excessive deformation.

[0008] The utility model is further configured as follows: the middle portion of the base is tilted downward relative to the elastic steel sheet to form a deformation limiting tilt angle.

[0009] Through the above arrangement, the base can limit the deformation of the elastic steel sheet, thereby preventing the elastic steel sheet from excessive deformation.

[0010] The utility model is further configured as follows: when the temperature-sensitive solution is preheated and expanded, the elastic steel sheet is deformed and bulged toward the base, the sealing beads on the elastic steel sheet extend from the drainage hole, and the elastic steel sheet fits the base.

[0011] Because the contact area of ​​the water outlet of the steam trap is small, if the direct contact pressure is high, the deformed elastic steel sheet is now fitted with the base, which not only avoids direct contact between the elastic steel sheet and the water outlet of the steam trap, but also increases the contact area between the elastic steel sheet and the base, thereby reducing the pressure.

[0012] The utility model is further configured as follows: a plurality of supporting legs extend toward the middle of the drainage hole of the base, dividing the drainage hole into a plurality of drainage channels.

[0013] The drainage hole is divided into several drainage channels by supporting feet, which can improve the drainage effect and is not easy to be blocked.

[0014] The utility model is further configured as follows: a plurality of heat dissipation holes are formed on the base.

[0015] The heat dissipation and cooling of the metal liquid capsule can be accelerated by setting the heat dissipation holes.

[0016] The utility model is further configured as follows: a plurality of limiting holes are formed on the base, a plurality of limiting protrusions are formed on the elastic steel sheet, and the limiting protrusions and the limiting holes are arranged in a one-to-one correspondence.

[0017] By setting the limiting protrusion and the limiting hole, the elastic steel sheet can be limited when deformed and the radial force it is subjected to can be shared, thus playing a protective role.

[0018] The utility model is further configured as follows: the temperature sensing solution is a mixed liquid of alcohol and silicone oil.

[0019] The utility model is further configured as follows: the upper cover, the elastic steel sheet and the base are fixedly connected by welding along a circumference.

[0020] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: through the setting of the base, the elastic steel sheet can be protected and limited. First, it can prevent the elastic steel sheet from directly contacting the water outlet of the steam trap, and increase the force area of ​​its sealed contact through the base, thereby reducing the pressure and playing a protective role. Second, it can limit the deformation of the elastic steel sheet and prevent the elastic steel sheet from excessive deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is one of the structural schematic diagrams of the metal liquid capsule.

[0023] Figure 2 This is the second structural schematic diagram of the metal liquid capsule.

[0024] Figure 3 Schematic diagram of the interior of the metal liquid capsule when sealed.

[0025] Figure 4 Schematic diagram of the interior of the metal sac during drainage.

[0026] Figure 5 Schematic diagram of the structure of the steam trap and metal liquid bag during sealing.

[0027] Figure 6 This is a schematic diagram of the structure of the steam trap and metal liquid bag during drainage.

[0028] Figure 7 This is a schematic diagram of the structure of the metal liquid capsule in Example 2

[0029] 1-upper cover; 2-elastic steel sheet; 3-base; 4-temperature sensing solution; 5-sealing bead; 6-drainage hole; 7-drain valve; 8-water outlet; 9-deformation limit inclination angle; 10-support foot; 11-drainage channel; 12-heat dissipation hole; 13-limiting hole; 14-limiting protrusion. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] A disc-shaped metal liquid capsule of a steam trap comprises an upper cover 1, an elastic steel sheet 2 and a base 3, wherein the elastic steel sheet 2 and the base 3 are both disc structures, the elastic steel sheet 2 is arranged between the upper cover 1 and the base 3, and a closed space is formed between the elastic steel sheet 2 and the upper cover 1, and a temperature-sensitive solution 4 is arranged in the closed space; a sealing bead 5 is fixed on the elastic steel sheet 2, and the middle part of the base 3 is arranged to be inclined downward and formed with a drainage hole 6, and the sealing bead 5 is arranged toward the drainage hole 6 and can extend from the drainage hole 6. The arrangement of the base 3 can protect and limit the elastic steel sheet 2. First, it can prevent the elastic steel sheet 2 from directly contacting the water outlet 8 of the steam trap 7, and the base 3 can increase the contact force area of ​​the elastic steel sheet after deformation, thereby reducing the pressure and playing a protective role; second, it can limit the deformation of the elastic steel sheet 2 and prevent the elastic steel sheet 2 from excessive deformation.

[0033] The middle part of the base 3 is tilted downward relative to the elastic steel sheet 2 to form a deformation limiting tilt angle 9. Through the above arrangement, the base 3 limits the deformation of the elastic steel sheet 2 and prevents the elastic steel sheet 2 from excessive deformation.

[0034] The elastic steel sheet 2 is deformed and bulged toward the base 3 when the temperature-sensitive solution 4 is preheated and expanded, and the sealing beads 5 on the elastic steel sheet 2 extend from the drainage holes 6, and the elastic steel sheet 2 fits with the base 3. Since the contact area of ​​the water outlet 8 of the steam trap 7 is small, if the elastic steel sheet 2 directly contacts the water outlet 8, the pressure is relatively high. Now, the deformed elastic steel sheet 2 fits with the base 3, which not only avoids direct contact between the elastic steel sheet 2 and the steam trap water outlet 8, but also increases the contact area between the elastic steel sheet 2 and the base 3, thereby reducing the pressure.

[0035] A plurality of support legs 10 extend from the drainage hole 6 of the base 3 toward the middle, dividing the drainage hole 6 into a plurality of drainage channels 11. The drainage hole 6 is divided into a plurality of drainage channels 11 by the support legs 10, which can improve the drainage effect and is not prone to clogging.

[0036] The base 3 is formed with a plurality of heat dissipation holes 12. The heat dissipation holes 12 can accelerate the heat dissipation and cooling of the metal liquid capsule.

[0037] The temperature sensing solution 4 is a mixed liquid of alcohol and silicone oil.

[0038] The upper cover 1, the elastic steel sheet 2 and the base 3 are fixedly connected by welding along a circumference.

[0039] Embodiment 2:

[0040] This embodiment is basically the same as the first embodiment, except that: a plurality of limiting holes 13 are formed on the base 3, and a plurality of limiting protrusions 14 are formed on the elastic steel sheet 2, and the limiting protrusions 14 and the limiting holes 13 are arranged one by one. By setting the limiting protrusions 14 and the limiting holes 13, the elastic steel sheet 2 can be limited when deformed, and the radial force it receives can be shared, thereby playing a protective role.

[0041] Working principle:

[0042] During normal use, due to the effect of high-temperature steam, the temperature-sensing solution 4 between the elastic steel sheet 2 and the upper cover 1 heats up and evaporates, which increases the pressure in the enclosed space and pushes the elastic steel sheet 2 toward the base. The sealing steel ball 5 on the elastic steel sheet 2 seals the water outlet 8 of the steam trap, thereby playing a sealing role.

[0043] During continuous use, condensed water on the pipeline gathers, thereby isolating the direct contact between the high-temperature steam and the elastic steel sheet 2. When the metal liquid capsule cools down to a certain degree, the temperature-sensitive solution 4 in the enclosed space liquefies, the pressure in the enclosed space decreases, the elastic steel sheet 2 shrinks and returns to its original position, and the sealing beads 5 on the elastic steel sheet 2 also shrink and return to their original position, no longer sealing the water outlet 8 of the steam trap. At this time, the condensed water will flow out of the water outlet of the steam trap 7. After the condensed water flows out, the high-temperature steam heats the metal liquid capsule again, causing the temperature-sensitive solution to vaporize and expand, and the water outlet of the steam trap is sealed again to prevent the high-temperature steam from flowing out.

[0044] The invention has the characteristics of simple structure, adopting a three-layer structure, and limiting the elastic steel sheet through the base to protect the elastic steel sheet.

[0045] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A disc-shaped metal liquid bag of a steam trap, comprising an upper cover and an elastic steel sheet, characterized in that: It also includes a base, wherein the elastic steel sheet and the base are both circular sheet structures, the elastic steel sheet is arranged between the upper cover and the base, and a closed space is formed between the elastic steel sheet and the upper cover, and a temperature-sensitive solution is arranged in the closed space; a sealing bead is fixed on the elastic steel sheet, the middle part of the base is inclined downward and is formed with a drainage hole, the sealing bead is arranged toward the drainage hole and can extend from the drainage hole, and a plurality of supporting feet extend toward the middle of the drainage hole of the base, dividing the drainage hole into a plurality of drainage channels.

2. The disc-shaped metal sac of a steam trap according to claim 1, characterized in that: The middle part of the base is tilted downward relative to the elastic steel sheet to form a deformation limiting tilt angle.

3. The disc-shaped metal sac of a steam trap according to claim 2, characterized in that: The elastic steel sheet is deformed and bulged toward the base when the temperature-sensitive solution is preheated and expanded, and the sealing beads on the elastic steel sheet extend out from the drainage hole, so that the elastic steel sheet fits the base.

4. The disc-shaped metal sac of a steam trap according to claim 1, characterized in that: A plurality of heat dissipation holes are formed on the base.

5. The disc-shaped metal sac of a steam trap according to claim 1, characterized in that: A plurality of limiting holes are formed on the base, a plurality of limiting protrusions are formed on the elastic steel sheet, and the limiting protrusions and the limiting holes are arranged in a one-to-one correspondence.

6. The disc-shaped metal bladder of a steam trap according to claim 1, characterized in that: The upper cover, the elastic steel sheet and the base are fixedly connected by welding along a circumference.

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