An easy-to-maintain single-piece medium-pressure steam trap

Abstract

The present invention discloses an easy-to-maintain single-piece medium-pressure steam trap, comprising a hollow valve body shell coated with an anti-corrosion coating; an air inlet pipe fixedly installed through the left side of the valve body shell; a mounting flange coaxially fixedly installed on the outside of the air inlet pipe and the air outlet pipe; and a positioning groove fixedly arranged at the middle position of the bottom end of the inner part of the valve body shell. The easy-to-maintain single-piece medium-pressure steam trap adopts a new structural design, so that when a failure occurs in the device, the internal parts can be exposed by removing the sealing cover, which is convenient for the staff to perform maintenance, and when the sealing cover is removed, the transmission between the gears is used to drive the sealing disk to rotate and seal the air inlet pipe, so that maintenance can be performed without closing the main valve, which is more convenient to operate and does not affect the normal use of the steam system. At the same time, when the internal temperature-sensing exhaust valve is damaged, the sealing plate will immediately perform secondary sealing to avoid steam leakage.

Description

Technical Field

[0001] The invention relates to the technical field of steam traps, in particular to an easy-to-maintain single-piece medium-pressure steam trap. Background Art

[0002] The steam trap is a valve tool used in the steam piping system. Its main function is to discharge the condensed water, air and carbon dioxide gas in the steam system as quickly as possible, while preventing steam leakage to the greatest extent possible.

[0003] In the prior art, a Chinese patent with authorization announcement number CN211738618U discloses an air exhaust device for a steam trap, comprising a valve body, a mounting frame is provided on the valve body, a mounting cavity is provided at the bottom of the mounting frame, a first bimetallic strip and a second bimetallic strip are provided in the mounting cavity, a fixing bolt is connected between the first bimetallic strip and the second bimetallic strip, the fixing bolt is connected with a top column, a cylindrical groove is provided at a position corresponding to the top column on the mounting frame, an air inlet is connected to the outside of the cylindrical groove, and the air inlet is arranged on the mounting frame, a movable groove is connected to the top of the cylindrical groove, a movable ball is provided in the movable groove, the movable groove is connected to an air outlet, the air outlet is connected to a trap exhaust port, and the trap exhaust port is arranged on the valve body. The air exhaust device for a steam trap can effectively remove air in a float-type steam trap, so that the float-type steam trap works normally.

[0004] However, in the actual use of the steam trap, the valve body shell is generally an integrated molding structure, and the sealing requirements of the valve body are high. Therefore, when damage occurs inside the valve body, it is difficult to directly contact the internal components, which will bring certain difficulties to maintenance. Summary of the invention

[0005] The object of the present invention is to provide an easy-to-maintain single-piece medium-pressure steam trap to solve the problem in the above background technology that it is inconvenient to perform maintenance when internal components are damaged.

[0006] To achieve the above object, the present invention provides the following technical solution: an easy-to-maintain single-piece medium-pressure steam trap, comprising a hollow valve body shell coated with an anti-corrosion coating, and further comprising:

[0007] An air inlet pipe is fixedly installed through the left side of the valve body shell, and an air outlet pipe is installed through the right side of the valve body shell, and the air outlet pipe and the transverse center axis of the air inlet pipe are located on the same horizontal line;

[0008] A mounting flange, coaxially fixedly mounted on the outside of the air inlet pipe and the air outlet pipe, wherein the mounting flange is fixedly connected to the main pipe by screws;

[0009] A positioning groove is fixedly arranged at the middle position of the bottom end of the valve body shell, and the positioning groove is in the shape of a hollow cylinder without a cover;

[0010] An internal partition is fixedly arranged in the middle position of the valve body shell, and the internal partition is generally in an inclined structure with a high middle and low sides, and the side surface of the internal partition forms a sealing structure with the inner wall of the valve body shell, and a longitudinally penetrating hole structure is arranged in the middle of the internal partition, and a filter screen penetrating up and down is fixedly arranged inside the left internal partition;

[0011] A buoyancy ball is arranged inside the positioning groove, the outer surface of the buoyancy ball is arranged in contact with the inner wall of the positioning groove, and the buoyancy ball is arranged as a rust-resistant stainless steel hollow sphere, and the radius of the buoyancy ball is greater than the height of the positioning groove;

[0012] A limit rod is fixedly installed longitudinally at the middle position of the lower surface of the buoyancy ball, and a sealed sliding penetration structure is formed between the limit rod and the valve body shell;

[0013] A drainage pipe is fixedly installed through the lower right end of the valve body shell, and the front end of the drainage pipe and the right side of the positioning groove form a penetration structure;

[0014] A sealing upper cover is arranged at the upper end of the valve body shell, the lower half of the sealing upper cover is arranged as a hollow cylindrical structure located inside the valve body shell, and the bottom of the sealing upper cover and the internal partition form a fitting sealing structure, and the sealing upper cover and the valve body shell are connected to form a disassembly and installation structure through fixing bolts penetrating therewith, and a sealing ring corresponding to the opening of the valve body shell is arranged on the outer surface of the middle part of the sealing upper cover;

[0015] A through hole, which is transversely penetrated and opened on the right side of the cylindrical structure of the lower half of the sealing upper cover;

[0016] The temperature-sensitive exhaust valve is fixedly installed inside the lower end of the sealing upper cover by screws. The temperature-sensitive exhaust valve is connected to the inner and outer sides of the lower end of the sealing upper cover, and the temperature-sensitive exhaust valve is automatically closed at high temperature.

[0017] Preferably, a sealing disk with a circular structure is rotatably installed inside the bottom end of the intake pipe, and the outer diameter of the sealing disk is equal to the inner diameter of the intake pipe. When the sealing disk is rotated to a position where the side is in contact with the inner wall of the intake pipe, the intake pipe can be sealed, thereby blocking steam from entering the interior of the valve body shell.

[0018] Preferably, a driven bevel gear located outside the air intake pipe is fixedly mounted on the upper end of the sealing disk, and a transmission gear set rotatably mounted to the valve body housing is meshedly connected to the side of the driven bevel gear, and the rotation of the transmission gear set enables the driven bevel gear meshed with the left side to drive the sealing disk to rotate.

[0019] Preferably, the transmission gear set is composed of two left and right coaxially fixedly connected bevel gears, and the right end of the transmission gear set is meshed with the active bevel gear, and the rotation of the active bevel gear can drive the transmission gear set meshed with it to rotate.

[0020] Preferably, a friction roller is coaxially fixedly installed above the active bevel gear, and the side outer surface of the friction roller is squeezed and fitted with the fixing bolt, and the friction roller is entirely made of a rubber material with a rough surface. When the fixing bolt is rotated to disassemble the sealing upper cover, the friction roller is driven to rotate by the friction force, thereby causing the active bevel gear below it to rotate synchronously.

[0021] Preferably, a dust collecting groove fixedly connected to the inner wall of the valve body shell is provided above the filter mesh, and a soft blocking brush is fixedly provided on the lower surface of the front end of the dust collecting groove, and a sealing plug corresponding to the position of the dust collecting groove is threadedly connected through the left side of the valve body shell. The filter mesh can be used to filter impurities in condensed water and steam, and the impurities can be flushed into the dust collecting groove for collection under the flushing of water flow.

[0022] Preferably, a temperature and humidity sensor is fixedly installed at the top right side of the valve body shell, and a sealing plate is horizontally arranged in the middle position inside the sealing upper cover, and the sealing plate is set to iron material. The temperature and humidity sensor can sense the high temperature and high humidity environment generated when steam leaks.

[0023] Preferably, the sealing plate and the guide rod longitudinally fixedly installed inside the sealing upper cover form an up and down sliding structure, and an extrusion spring located above the sealing plate is arranged on the outside of the upper end of the guide rod. The sealing plate can be pushed downward along the guide rod to the bottom of the through hole by the elastic action of the extrusion spring.

[0024] Preferably, a powerful electromagnet is fixedly installed inside the top of the sealed upper cover, and a magnetic adsorption structure is formed between the powerful electromagnet and the sealing plate, and the powerful electromagnet is electrically connected to a built-in battery fixedly installed above the sealed upper cover through a wire, and the magnetism of the powerful electromagnet is controlled by controlling the built-in battery to turn on and off the power to the powerful electromagnet.

[0025] Compared with the prior art, the invention has the following beneficial effects: the easy-to-maintain single-piece medium-pressure steam trap adopts a new structural design, so that when a fault occurs in the device, the internal parts can be exposed by removing the sealing upper cover, which is convenient for the staff to perform maintenance, and when the sealing upper cover is removed, the transmission between the gears is used to drive the sealing disk to rotate to seal the air intake pipe, so that maintenance can be performed without closing the main valve, the operation is more convenient and does not affect the normal use of the steam system, and when the internal temperature-sensing exhaust valve is damaged, the sealing plate will immediately perform secondary sealing to avoid steam leakage. The specific contents are as follows:

[0026] 1. The intake pipe, fixing bolts and sealing disc are used in coordination. When the fixing bolts are tightened to disassemble the sealing cover, the rotating fixing bolts use friction to drive the friction roller to rotate, thereby using the transmission between the active bevel gear and the rotating gear set to drive the driven bevel gear to rotate, and finally the driven bevel gear drives the sealing disc to rotate to a position where the side is in contact with the inner wall of the intake pipe, thereby achieving a sealing effect on the intake pipe and preventing steam from continuing to enter the valve body shell, so that the inside of the valve body shell can be inspected and repaired without closing the main valve.

[0027] 2. The filter, dust collecting trough and blocking brush are used in coordination. When steam and condensed water pass through the filter, impurities contained therein are filtered out. Under the action of water flow, the impurities are flushed into the dust collecting trough through the blocking brush for collection. The blocking effect of the blocking brush can avoid backflow.

[0028] 3. The sealing plate, extrusion spring and powerful electromagnet are used in coordination. When the temperature-sensitive exhaust valve is damaged, the temperature and humidity sensor is used to sense the high temperature and humidity generated by steam leakage, thereby controlling the built-in battery to disconnect the power supply to the powerful electromagnet. At this time, the sealing plate is pushed downward to the bottom of the through hole under the action of the extrusion spring, thereby achieving a secondary seal to prevent further steam leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the front view structure of the valve body shell of the present invention;

[0030] Figure 2 It is a schematic diagram of the front cross-sectional structure of the valve body shell in the buoyancy ball sealing state of the present invention;

[0031] Figure 3 It is a schematic diagram of the front cross-sectional structure of the valve body shell in the floating state of the buoyancy ball of the present invention;

[0032] Figure 4 It is a schematic diagram of a top view of a cross-sectional structure of a buoyancy shell of the present invention;

[0033] Figure 5 For the present invention Figure 2The enlarged structural diagram at A in the middle;

[0034] Figure 6 This is a schematic diagram of the top view of the sealing disk of the present invention;

[0035] Figure 7 This is a schematic diagram of the front cross-sectional structure of the sealing upper cover of the present invention;

[0036] Figure 8 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0037] Fig. 9 This is a working diagram of the temperature and humidity sensor of the present invention.

[0038] In the figure: 1. valve body shell; 2. air inlet pipe; 3. air outlet pipe; 4. mounting flange; 5. positioning groove; 6. internal partition; 601. filter screen; 7. buoyancy ball; 8. limit rod; 9. drain pipe; 10. sealing cover; 1001. fixing bolt; 1002. sealing ring; 11. through hole; 12. temperature sensing exhaust valve; 13. sealing disk; 14. driven bevel gear; 15. transmission gear set; 16. driving bevel gear; 17. friction roller; 18. dust collecting tank; 19. blocking brush; 20. sealing plug; 21. temperature and humidity sensor; 22. sealing plate; 23. guide rod; 24. extrusion spring; 25. strong electromagnet; 26. built-in battery. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-Figure 9The present invention provides a technical solution: an easy-to-maintain single-piece medium-pressure steam trap, comprising a hollow valve body shell 1 coated with an anti-corrosion coating, and also comprising: an air inlet pipe 2, which is fixedly installed through the left side of the valve body shell 1, and an air outlet pipe 3 is installed through the right side of the valve body shell 1, and the air outlet pipe 3 and the transverse center axis of the air inlet pipe 2 are located on the same horizontal line; a mounting flange 4, which is coaxially fixedly installed on the outside of the air inlet pipe 2 and the air outlet pipe 3, and the mounting flange 4 is fixedly connected to the main pipeline by screws; a positioning groove 5, which is fixedly arranged in the middle of the bottom end of the valve body shell 1, and the positioning groove 5 ... The groove 5 is a hollow cylindrical structure without a cover as a whole; the internal partition 6 is fixedly arranged in the middle position of the valve body shell 1, and the internal partition 6 is an inclined structure with a high middle and a low side as a whole, and the side of the internal partition 6 and the inner wall of the valve body shell 1 form a sealing structure, and a hole-like structure is arranged in the middle of the internal partition 6, and a filter screen 601 is fixedly arranged in the left internal partition 6 to penetrate up and down; the buoyancy ball 7 is arranged in the positioning groove 5, and the outer surface of the buoyancy ball 7 is arranged to fit the inner wall of the positioning groove 5, and the buoyancy ball 7 is set to be rust-resistant stainless steel hollow The buoyancy ball 7 has a central sphere, and the radius of the buoyancy ball 7 is greater than the height of the positioning groove 5; the limiting rod 8 is fixedly installed longitudinally in the middle position of the lower surface of the buoyancy ball 7, and the limiting rod 8 and the valve body shell 1 form a sealed sliding penetration structure; the drain pipe 9 is fixedly installed at the lower right end of the valve body shell 1, and the front end of the drain pipe 9 and the right side of the positioning groove 5 form a penetration structure; the sealing cover 10 is arranged at the upper end of the valve body shell 1, and the lower half of the sealing cover 10 is arranged to be a hollow cylindrical structure located inside the valve body shell 1, and the bottom of the sealing cover 10 forms a close contact with the internal partition 6. The sealing cover 10 is provided with a disassembly and installation structure through a fixing bolt 1001 connected therewith and the valve body shell 1. A sealing ring 1002 corresponding to the opening of the valve body shell 1 is arranged on the outer surface of the middle part of the sealing cover 10; a through hole 11 is horizontally penetrated and opened on the right side of the cylindrical structure of the lower half of the sealing cover 10; a temperature-sensing exhaust valve 12 is fixedly installed inside the lower end of the sealing cover 10 by screws, the temperature-sensing exhaust valve 12 is connected to the inner and outer sides of the lower end of the sealing cover 10, and the temperature-sensing exhaust valve 12 is automatically closed at high temperature.

[0041] Before using the device, first use the mounting flange 4 to fix the valve body shell 1 in the pipeline of the steam system. When the steam system is just started, low-temperature air and condensed water enter the valve body shell 1 through the air inlet pipe 2. At this time, the low-temperature air is finally discharged from the air outlet pipe 3 through the temperature-sensitive exhaust valve 12 and the through hole 11 (the temperature-sensitive exhaust valve 12 automatically opens under low temperature conditions). The condensed water is stored in the bottom end of the valve body shell 1. When the water level exceeds the height of the positioning groove 5, the buoyancy ball 7 moves upward under the action of the buoyancy of the water. At this time, the limit rod 8 below slides upward accordingly, so that the buoyancy ball 7 keeps moving vertically up and down. After the buoyancy ball 7 moves upward, water enters the positioning groove 5 and is discharged from the drain pipe 9 (at this time, due to the effect of the water seal, the steam cannot be discharged from the drain pipe 9). After the water level drops, the buoyancy ball 7 falls under the action of gravity and is sealed with the inner wall of the positioning groove 5 again. The high-temperature steam entering after the low-temperature air is exhausted causes the temperature-sensitive exhaust valve 12 to close automatically.

[0042] A sealing disk 13 with a circular structure is rotatably installed inside the bottom end of the intake pipe 2, and the outer diameter of the sealing disk 13 is equal to the inner diameter of the intake pipe 2. A driven bevel gear 14 located outside the intake pipe 2 is fixedly installed on the upper end of the sealing disk 13, and the side of the driven bevel gear 14 is meshedly connected with a transmission gear set 15 rotatably installed with the valve body housing 1. The transmission gear set 15 is composed of two left and right coaxially fixedly connected bevel gears, and the right end of the transmission gear set 15 is meshedly connected with the active bevel gear 16, and a friction roller 17 is coaxially fixedly installed above the active bevel gear 16, and the side outer surface of the friction roller 17 is pressed and fitted with the fixing bolt 1001, and the friction roller 17 is entirely set to a rubber material with a rough surface.

[0043] When a component inside the valve body shell 1 fails, first rotate the fixing bolt 1001 to disassemble the sealing upper cover 10. After the sealing upper cover 10 is removed, the internal components of the valve body shell 1 are exposed, thereby facilitating maintenance. When rotating the fixing bolt 1001, the friction force on its outer surface side is used to drive the friction roller 17 to rotate. While rotating, the friction roller 17 drives the active bevel gear 16 below it to rotate synchronously, thereby making the transmission gear set 15 meshed with the active bevel gear 16 rotate synchronously, and the transmission gear set 15 on the left side is used to make the driven bevel gear 14 meshed with it drive the sealing disk 13 to rotate (when the fixing bolt 1001 is completely removed, the sealing disk 13 just rotates to a position where the side is in contact with the inner wall of the intake pipe 2, thereby achieving a sealing effect on the intake pipe 2), thereby blocking subsequent steam from entering the interior of the valve body shell 1, so that the interior of the valve body shell 1 can be repaired without closing the main valve, and the steam system does not need to stop running during the maintenance process.

[0044] A dust collecting groove 18 fixedly connected to the inner wall of the valve body shell 1 is arranged above the filter screen 601, and a soft blocking brush 19 is fixedly arranged on the lower surface of the front end of the dust collecting groove 18, and a sealing plug 20 corresponding to the position of the dust collecting groove 18 is threadedly connected through the left side of the valve body shell 1.

[0045] The filter 601 is used to filter the condensed water and steam passing through to remove the impurities contained therein. The remaining impurities are collected inside the dust collecting tank 18 under the subsequent flushing of the condensed water. At the same time, the blocking brush 19 prevents the impurities from flowing back again. After a period of use, the sealing plug 20 is removed to discharge the impurities to achieve the purpose of cleaning.

[0046] A temperature and humidity sensor 21 is fixedly installed at the top right side of the valve body shell 1, and a sealing plate 22 is horizontally arranged in the middle position of the sealing upper cover 10, and the sealing plate 22 is set to an iron material, and the sealing plate 22 and a guide rod 23 longitudinally fixedly installed inside the sealing upper cover 10 form an up and down sliding structure, and an extrusion spring 24 located above the sealing plate 22 is arranged on the outside of the upper end of the guide rod 23, and a strong electromagnet 25 is fixedly installed inside the top of the sealing upper cover 10, and a magnetic adsorption structure is formed between the strong electromagnet 25 and the sealing plate 22, and the strong electromagnet 25 is electrically connected to a built-in battery 26 fixedly installed above the sealing upper cover 10 through a wire.

[0047] When the temperature-sensitive exhaust valve 12 inside the sealing upper cover 10 fails, the high-temperature and high-humidity steam inside the valve body shell 1 will be discharged from the through hole 11. At this time, the temperature and humidity sensor 21 senses the steam leakage and immediately controls the built-in battery 26 to disconnect the power supply to the powerful electromagnet 25, causing the powerful electromagnet 25 to lose its magnetism. At this time, the sealing plate 22 is pushed downward to the bottom of the through hole 11 under the elastic pushing action of the extrusion spring 24, thereby achieving the effect of secondary sealing, avoiding the danger and loss caused by large-scale steam leakage before maintenance.

[0048] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. 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. An easy-to-maintain single-piece medium-pressure steam trap, comprising a hollow valve body shell (1) coated with an anti-corrosion coating, characterized in that: Also includes: An air inlet pipe (2) is fixedly installed through the left side of the valve body shell (1), and an air outlet pipe (3) is installed through the right side of the valve body shell (1), and the transverse center axis of the air outlet pipe (3) and the air inlet pipe (2) are located on the same horizontal line; A mounting flange (4) is coaxially fixedly mounted on the outside of the air inlet pipe (2) and the air outlet pipe (3), and the mounting flange (4) is fixedly connected to the main pipe by means of screws; A positioning groove (5) is fixedly arranged at a middle position of the bottom end of the valve body shell (1), and the positioning groove (5) is in the shape of a hollow cylinder without a cover as a whole; An internal partition (6) is fixedly arranged in the middle position of the valve body shell (1), and the internal partition (6) as a whole is an inclined structure with a high center and low sides, and the side of the internal partition (6) and the inner wall of the valve body shell (1) form a sealing structure, and a hole-like structure is longitudinally penetrated in the middle of the internal partition (6), and a filter screen (601) is fixedly arranged in the left side of the internal partition (6) and penetrates from top to bottom; A buoyancy ball (7) is arranged inside the positioning groove (5), the outer surface of the buoyancy ball (7) is arranged in close contact with the inner wall of the positioning groove (5), and the buoyancy ball (7) is arranged as a corrosion-resistant stainless steel hollow sphere, and the radius of the buoyancy ball (7) is greater than the height of the positioning groove (5); A limit rod (8) is fixedly installed longitudinally at a middle position of the lower surface of the buoyancy ball (7), and a sealed sliding through structure is formed between the limit rod (8) and the valve body shell (1); A drainage pipe (9) is fixedly installed through the lower right end of the valve body shell (1), and the front end of the drainage pipe (9) and the right side surface of the positioning groove (5) form a through structure; A sealing upper cover (10) is arranged at the upper end of the valve body shell (1), the lower half of the sealing upper cover (10) is arranged as a hollow cylindrical structure located inside the valve body shell (1), and the bottom of the sealing upper cover (10) and the internal partition (6) form a fitted sealing structure, and the sealing upper cover (10) and the valve body shell (1) form a disassembly and installation structure through fixing bolts (1001) connected thereto, and a sealing ring (1002) corresponding to the opening of the valve body shell (1) is arranged on the outer surface of the middle part of the sealing upper cover (10); A through hole (11) is provided transversely through the right side of the cylindrical structure of the lower half of the sealing upper cover (10); The temperature-sensitive exhaust valve (12) is fixedly mounted inside the lower end of the sealing upper cover (10) by means of screws. The temperature-sensitive exhaust valve (12) is connected to the inner and outer sides of the lower end of the sealing upper cover (10), and the temperature-sensitive exhaust valve (12) is automatically closed at high temperature.

2. The easy-to-maintain single-piece medium-pressure steam trap according to claim 1, characterized in that: A sealing disk (13) with a circular structure is rotatably mounted inside the bottom end of the air intake pipe (2), and the outer diameter of the sealing disk (13) is equal to the inner diameter of the air intake pipe (2).

3. The easy-to-maintain single-piece medium-pressure steam trap according to claim 2, characterized in that: A driven bevel gear (14) located outside the air intake pipe (2) is fixedly mounted on the upper end of the sealing disk (13), and a transmission gear set (15) rotatably mounted on the valve body housing (1) is meshedly connected to the side of the driven bevel gear (14).

4. The easy-to-maintain single-piece medium-pressure steam trap according to claim 3, characterized in that: The transmission gear set (15) is composed of two left and right coaxially fixedly connected bevel gears, and the right end of the transmission gear set (15) is meshedly connected with the driving bevel gear (16).

5. The easy-to-maintain single-piece medium-pressure steam trap according to claim 4, characterized in that: A friction roller (17) is coaxially fixedly mounted above the active bevel gear (16), and the side outer surface of the friction roller (17) is pressed and fitted with the fixing bolt (1001), and the friction roller (17) is entirely made of a rubber material with a rough surface.

6. The easy-to-maintain single-piece medium-pressure steam trap according to claim 1, characterized in that: A dust collecting groove (18) fixedly connected to the inner wall of the valve body shell (1) is arranged above the filter screen (601), and a soft blocking brush (19) is fixedly arranged on the lower surface of the front end of the dust collecting groove (18), and a sealing plug (20) corresponding to the position of the dust collecting groove (18) is threadedly connected through the left side surface of the valve body shell (1).

7. The easy-to-maintain single-piece medium-pressure steam trap according to claim 1, characterized in that: A temperature and humidity sensor (21) is fixedly mounted on the top right side of the valve body shell (1), and a sealing plate (22) is transversely arranged in the middle of the sealing upper cover (10), and the sealing plate (22) is made of iron material.

8. The easy-to-maintain single-piece medium-pressure steam trap according to claim 7, characterized in that: The sealing plate (22) and a guide rod (23) longitudinally fixedly installed inside the sealing upper cover (10) form an up-and-down sliding structure, and an extrusion spring (24) located above the sealing plate (22) is arranged outside the upper end of the guide rod (23).

9. The easy-to-maintain single-piece medium-pressure steam trap according to claim 8, characterized in that: A powerful electromagnet (25) is fixedly installed inside the top of the sealing upper cover (10), and a magnetic adsorption structure is formed between the powerful electromagnet (25) and the sealing plate (22), and the powerful electromagnet (25) is electrically connected to a built-in battery (26) fixedly installed above the sealing upper cover (10) through a wire.

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