Drain valve with simple structure

Abstract

The utility model relates to a drain valve with a simple structure, which comprises a valve body, a partition plate is arranged in the middle of the inner side of the valve body, the partition plate divides the interior of the valve body into a water inlet connector and a water outlet connector, and a cylindrical valve seat is integrally formed on the upper side of the valve body. The valve seat is provided with a water inlet channel communicated with the water inlet connector and a water outlet channel communicated with the water outlet connector from top to bottom, the valve seat is provided with a valve plate covering the upper ends of the water inlet channel and the water outlet channel, the valve plate is provided with a cover body, the cover body is in threaded connection with the side wall of the valve seat, and the valve plate is provided with a valve rod. A cover plate moving cavity is arranged between the cover body and the valve seat, an upper plane is arranged on the upper side of the valve body, a sealing ring is sleeved outside the valve seat, and the sealing ring is tightly pressed between the lower end of the cover body and the upper plane. The check valve is simple and reliable in structure, convenient to disassemble and assemble and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of steam traps, in particular to a steam trap with a simple structure. Background Art

[0002] Steam trap, also known as drain valve, liquid drain valve or condensate drain valve, is a valve specially used in steam heating system to automatically drain condensate, air and other non-condensable gases and prevent steam leakage. It is widely used in many fields such as industrial production, building heating, food processing, medical equipment, etc. The overall structure of existing steam traps is often complex, and the complex structure is more troublesome to assemble and the manufacturing cost is relatively high. Therefore, it is necessary to propose a steam trap with simple and reliable structure, easy to disassemble and assemble, and low manufacturing cost. Utility Model Content

[0003] The utility model provides a steam trap with a simple structure, which solves the above problems existing in the use process of the prior art.

[0004] The technical solution of the utility model is achieved as follows: a steam trap with a simple structure comprises a valve body, a partition is provided in the middle of the inner side of the valve body, the partition divides the interior of the valve body into a water inlet connection port and a water outlet connection port, a cylindrical valve seat is integrally formed on the upper side of the valve body, a water inlet channel connected to the water inlet connection port and a water outlet channel connected to the water outlet connection port are provided on the valve seat from top to bottom, a valve sheet is provided on the valve seat and covers the upper ends of the water inlet channel and the water outlet channel, a cover body is provided on the valve sheet, the cover body is threadedly connected to the side wall of the valve seat, a cover sheet movable cavity is provided between the cover body and the valve seat, an upper plane is provided on the upper side of the valve body, a sealing ring is provided on the outer sleeve of the valve seat, and the sealing ring is pressed between the lower end of the cover body and the upper plane.

[0005] Preferably, the water inlet channel is located on the axis of the valve seat, an annular groove surrounding the water inlet channel is formed at the upper end of the valve seat, and the water outlet channel is located at the bottom of the annular groove.

[0006] Preferably, a hexagonal easy-rotation portion is integrally formed on the outer side wall of the cover body.

[0007] Preferably, the outer wall of the valve body is in the shape of a quadrangular prism, and the inner walls of the water inlet connection port and the water outlet connection port are both provided with internal threads.

[0008] Preferably, the valve plate is in the shape of a circular plate and is movably arranged in a movable cavity of the cover plate.

[0009] Preferably, a locking plate is fixedly connected to the lower side of the easy-to-rotate part, and the valve body is fixedly connected to a lower connecting seat on the upper plane. The locking plate corresponds to the position of the lower connecting seat when the cover body is locked on the valve seat, a through hole is provided on the locking plate, a screw connecting port corresponding to the through hole is provided on the lower connecting seat, and a screw is provided on the through hole.

[0010] Preferably, at least two screw connection ports are provided on the lower connection seat, and the screw connection ports are distributed in a circle with the axis of the valve seat as the center.

[0011] In summary, the beneficial effects of the present invention are:

[0012] 1. The internal structure of the valve body of the utility model is simple, and the valve seat adopts an integral cylindrical design, which reduces the assembly links and enhances the stability of the overall structure. The valve plate is placed in the cover plate movable cavity between the cover body and the valve seat. The cover body threaded on the valve seat is convenient for disassembly and installation with the cover plate, which greatly improves the convenience of maintenance. The utility model has fewer parts and a simpler structure, which reduces the manufacturing cost. In addition, since the upper side of the valve body has an upper plane, the sealing ring can be directly pressed between the cover body and the upper plane of the valve body, so that a tight and effective seal can be formed, ensuring the sealing performance of the steam trap. In addition, the water inlet channel and the water outlet channel are directly connected to the water inlet connection port and the water outlet connection port inside the valve body, ensuring the smooth flow of steam and condensate and improving the drainage efficiency. The setting of the valve plate can accurately control the on and off of steam and condensate to prevent steam leakage.

[0013] 2. By setting the locking plate, the screw and the screw connection port on the lower connecting seat, the cover body threadedly connected to the valve seat can maintain the reliability of connection and play a role in preventing loosening. In this way, the sealing ring can maintain good sealing performance and is not prone to leakage. In addition, the movable cavity of the cover piece can always maintain an appropriate size to prevent the movable cavity of the cover piece from becoming larger due to the loosening of the cover body, thereby increasing the upward movement range of the cover piece, thereby deteriorating the performance of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structural explosion of the utility model.

[0018] In the figure: 1. valve body; 11. partition; 12. water inlet connection port; 13. water outlet connection port; 14. upper plane; 15. internal thread; 16. lower connection seat; 17. screw connection port; 2. valve seat; 21. water inlet channel; 22. water outlet channel; 23. annular groove; 3. valve plate; 4. cover body; 41. easy-to-rotate part; 42. locking plate; 43. through hole; 5. movable cavity; 6. sealing ring; 7. screw. DETAILED DESCRIPTION

[0019] The following will be combined with the attached embodiment of the present utility model Figure 1-3 The technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example:

[0021] like Figures 1 to 3 The utility model discloses a steam trap with a simple structure, comprising a valve body 1, a partition plate 11 is arranged in the middle of the inner side of the valve body 1, the partition plate 11 divides the inside of the valve body 1 into a water inlet connection port 12 and a water outlet connection port 13, a cylindrical valve seat 2 is integrally formed on the upper side of the valve body 1, a water inlet channel 21 connected to the water inlet connection port 12 and a water outlet channel 22 connected to the water outlet connection port 13 are opened from top to bottom on the valve seat 2, and a cover is arranged on the valve seat 2 between the water inlet channel 21 and the water outlet channel 2 2, and a cover body 4 is provided on the valve plate 3. The cover body 4 is threadedly connected to the side wall of the valve seat 2 for easy disassembly. A cover plate movable cavity 5 is provided between the cover body 4 and the valve seat 2. The valve plate 3 is in the shape of a circular plate and is movably arranged in the cover plate movable cavity 5. It should also be noted that an upper plane 14 is provided on the upper side of the valve body 1, and a sealing ring 6 is provided on the outer sleeve of the valve seat 2. The sealing ring 6 is pressed between the lower end of the cover body 4 and the upper plane 14 to form a tight and effective seal, thereby ensuring the sealing performance of the steam trap.

[0022] Steam enters the valve body 1 from the water inlet connection port 12, and enters the middle of the valve body 1 through the water inlet channel 21 opened on the valve seat 2. As the equipment runs, condensed water accumulates continuously. When its liquid level reaches a certain height or the pressure reaches a set value, the valve plate 3 is opened by water pressure or buoyancy, so that the condensed water is discharged from the valve body 1 through the water outlet channel 22. After the condensed water is discharged, the valve plate 3 continues to fall due to gravity, forming a barrier to the steam.

[0023] Furthermore, the water inlet channel 21 is located on the axis of the valve seat 2, and an annular groove 23 surrounding the water inlet channel 21 is opened at the upper end of the valve seat 2. The annular groove 23 facilitates the condensed water to be quickly gathered into the water outlet channel 22, and the water outlet channel 22 is located at the bottom of the annular groove 23.

[0024] In order to facilitate the cover 4 to be turned and opened, a hexagonal easy-turning portion 41 is integrally formed on the outer wall of the cover 4. By loosening the cover 4, it can be separated from the valve seat 2 to expose the valve plate 3. At this time, the valve plate 3, the cover 4, etc. can be cleaned, inspected or replaced to ensure the normal operation of the steam trap. After the adjustment is completed, the cover 4 is re-tightened to compress the sealing ring 6 to restore the sealing state of the steam trap.

[0025] In order to facilitate the connection of the utility model with an external pipeline, the outer wall of the valve body 1 is in the shape of a quadrangular prism, and internal threads 15 are provided on the inner walls of the water inlet connection port 12 and the water outlet connection port 13 .

[0026] In addition, in the present invention, a locking plate 42 is fixedly connected to the lower side of the easy-to-rotate portion 41, and the valve body 1 is fixedly connected to a lower connecting seat 16 on the upper plane 14. The locking plate 42 corresponds to the position of the lower connecting seat 16 when the cover body 4 is locked on the valve seat 2. A through hole 43 is provided on the locking plate 42, and a screw connecting port 17 corresponding to the through hole 43 is provided on the lower connecting seat 16. The locking plate 42 is provided with a screw 7 on the through hole 43. When the cover body 4 is locked on the valve seat 2, the locking plate 42 is locked on the lower connecting seat 16 by the screw 7, so that the cover body 4 threadedly connected to the valve seat 2 can maintain the reliability of the connection and play a role in preventing loosening. In this way, the sealing ring 6 can maintain good sealing performance and is not prone to leakage. In addition, the cover plate active cavity 5 can always maintain an appropriate size to prevent the cover plate active cavity 5 from becoming larger due to the loosening of the cover body 4, thereby increasing the upward movement range of the cover plate, thereby deteriorating the performance of the present invention.

[0027] Furthermore, at least two screw connection ports 17 are provided on the lower connecting seat 16, and the screw connection ports 17 are distributed in a circle with the axis of the valve seat 2 as the center. In this way, when the thickness of the sealing ring 6 is different, when the cover body 4 is locked on the valve seat 2, the position of the through hole 43 on the locking plate 42 will change, so different screw connection ports 17 are required for the screw 7 to be connected.

[0028] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steam trap with a simple structure, comprising a valve body, characterized in that: A partition is provided in the middle of the inner side of the valve body, and the partition divides the interior of the valve body into a water inlet connection port and a water outlet connection port. A cylindrical valve seat is integrally formed on the upper side of the valve body, and a water inlet channel connected to the water inlet connection port and a water outlet channel connected to the water outlet connection port are provided on the valve seat from top to bottom. A valve sheet covering the upper ends of the water inlet channel and the water outlet channel is provided on the valve seat, and a cover body is provided on the valve sheet, and the cover body is threadedly connected to the side wall of the valve seat, and a cover sheet movable cavity is provided between the cover body and the valve seat, and an upper plane is provided on the upper side of the valve body, and a sealing ring is provided on the outer sleeve of the valve seat, and the sealing ring is pressed between the lower end of the cover body and the upper plane.

2. A steam trap with a simple structure according to claim 1, characterized in that: The water inlet channel is located on the axis of the valve seat, an annular groove surrounding the water inlet channel is formed at the upper end of the valve seat, and the water outlet channel is located at the bottom of the annular groove.

3. A steam trap with a simple structure according to claim 2, characterized in that: A hexagonal easy-rotation portion is integrally formed on the outer side wall of the cover body.

4. A steam trap with a simple structure according to claim 1, characterized in that: The outer wall of the valve body is in the shape of a quadrangular column, and the inner walls of the water inlet connection port and the water outlet connection port are both provided with internal threads.

5. A steam trap with a simple structure according to claim 1, characterized in that: The valve plate is in the shape of a circular plate and is movably arranged in the movable cavity of the cover plate.

6. A steam trap with a simple structure according to claim 3, characterized in that: A locking plate is fixedly connected to the lower side of the easy-to-rotate part, and a lower connecting seat is fixedly connected to the valve body on the upper plane. The locking plate corresponds to the position of the lower connecting seat when the cover body is locked on the valve seat. A through hole is provided on the locking plate, and a screw connecting port corresponding to the through hole is provided on the lower connecting seat, and a screw is provided on the through hole.

7. A steam trap with a simple structure according to claim 6, characterized in that: The lower connecting seat is provided with at least two screw connecting ports, and the screw connecting ports are distributed in a circle with the axis of the valve seat as the center.

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