Automatic steam trap

Abstract

The utility model belongs to the technical field of fluid control, and discloses an automatic steam trap which comprises a steam trap barrel, a floating ball body and a connecting rod, the floating ball body and the connecting rod are arranged in the steam trap barrel, an inlet pipeline and a drainage pipeline are arranged on the steam trap barrel, a sealing flange is arranged at the end of the drainage pipeline, and a discharge hole is formed in the sealing flange. One end of the connecting rod is connected with the floating ball body, the other end of the connecting rod penetrates through the drainage pipeline to be connected with the inner side surface of the sealing flange, a supporting rod obliquely extends out of the connecting rod, and a sealing plug is arranged at the end of the supporting rod. According to the automatic steam trap, the supporting rod on the connecting rod is driven to act according to the acting force of the floating ball body on the connecting rod under different liquid levels, then opening or closing of the discharging hole is adjusted, the automatic water draining function is achieved, the overall structure is simple, redundant mechanical structures are omitted, the action is accurate, the failure rate is low, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to an automatic water trap. Background Art

[0002] Steam traps, also known as steam traps, are devices used to remove condensate and other non-condensable liquids accumulated in pipes or equipment. Steam traps have various structures, mainly divided into mechanical steam traps and thermal steam traps. Mechanical steam traps rely on the density difference between steam and condensate and the liquid level of condensate to work, specifically divided into float type and inverted bucket type; thermal steam traps work by utilizing the thermodynamic characteristics of steam and condensate, including pulse type, thermodynamic type, orifice plate type, etc.

[0003] Among them, the buoy-type steam trap is the most common structure. Its advantage is that it does not require other power sources and the equipment cost is relatively low. However, it also has some disadvantages, such as poor structural stability, high failure rate, easy failure of the steam trap function, etc., so it needs to be optimized. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide an automatic drain valve, optimize the structure, reduce the operation failure rate, and ensure the drain function.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic steam trap comprises a steam trap cylinder, a floating ball body and a connecting rod arranged in the steam trap cylinder, an inlet pipe and a drainage pipe are arranged on the steam trap cylinder, a sealing flange is arranged at the end of the drainage pipe, a discharge hole is opened on the sealing flange, one end of the connecting rod is connected to the floating ball body, the other end of the connecting rod passes through the drainage pipe and is connected to the inner surface of the sealing flange, and a support rod is obliquely extended from the connecting rod, and a sealing plug is arranged at the end of the support rod;

[0007] When the liquid level in the steam trap cylinder is not higher than the set value, the connecting rod drives the support rod to the sealing flange under the action of gravity, and the sealing plug blocks the discharge hole;

[0008] When the liquid level in the steam trap cylinder is higher than the set value, the connecting rod drives the support rod away from the sealing flange under the buoyancy of the float body, and the sealing plug is separated from the discharge hole.

[0009] As an optional solution, both ends of the connecting rod are hinged to the float body and the sealing flange respectively, and the hinge of the connecting rod on the sealing flange is located directly above the discharge hole, and the support rod extends from the lower surface of the connecting rod.

[0010] As an optional solution, the hinge of the connecting rod on the sealing flange is located at the center of the sealing flange, and the discharge hole is eccentrically arranged on the sealing flange.

[0011] As an optional solution, the angle between the support rod and the connecting rod is 10° to 20°.

[0012] As an optional solution, the sealing plug is hemispherical, and the orifice surface of the discharge hole is a curved surface matched with the spherical surface of the sealing plug.

[0013] As an optional solution, the sealing plug is an elastic rubber body.

[0014] The beneficial effects of the utility model are as follows: the automatic drain device drives the support rod on the connecting rod to move according to the force of the floating ball on the connecting rod under different liquid levels, thereby adjusting the discharge hole to be opened or closed, thereby realizing the function of automatic draining. The overall structure is simple, redundant mechanical structure is eliminated, the action is precise, the failure rate is low, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the automatic steam trap provided by an embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional view of the automatic steam trap provided by an embodiment of the utility model.

[0017] In the attached figure:

[0018] 1. Trap body; 2. Float; 3. Connecting rod; 4. Inlet pipe; 5. Drain pipe; 6. Sealing flange; 7. Discharge hole; 8. Support rod; 9. Sealing plug. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0023] See also Figure 1 and Figure 2 As shown, the preferred embodiment provides an automatic steam trap, including a steam trap cylinder 1 and a float body 2 and a connecting rod 3 arranged in the steam trap cylinder 1, an inlet pipe 4 and a drainage pipe 5 are arranged on the steam trap cylinder 1, a sealing flange 6 is arranged at the end of the drainage pipe 5, a discharge hole 7 is opened on the sealing flange 6, one end of the connecting rod 3 is connected to the float body 2, and the other end of the connecting rod 3 passes through the drainage pipe 5 and is connected to the inner surface of the sealing flange 6, and a support rod 8 is obliquely extended from the connecting rod 3, and a sealing plug 9 is arranged at the end of the support rod 8.

[0024] When the liquid level in the steam trap cylinder 1 is not higher than the set value, the connecting rod 3 drives the support rod 8 to press against the sealing flange 6 under the action of gravity, and the sealing plug 9 blocks the discharge hole 7;

[0025] When the liquid level in the steam trap cylinder 1 is higher than the set value, the connecting rod 3 drives the supporting rod 8 away from the sealing flange 6 under the buoyancy of the floating ball 2, the sealing plug 9 is separated from the discharge hole 7, and the discharge hole 7 is unblocked, thereby achieving the steam trapping function.

[0026] Therefore, according to the force of the floating ball 2 on the connecting rod 3 at different liquid levels, the support rod 8 on the connecting rod 3 is driven to move, and then the discharge hole 7 is adjusted to be opened or closed, thereby realizing the function of automatic drainage. The overall structure is simple, redundant mechanical structure is eliminated, the action is precise, the failure rate is low, and the service life is long.

[0027] Specifically, the two ends of the connecting rod 3 are hinged to the float body 2 and the sealing flange 6 respectively, and the hinge of the connecting rod 3 on the sealing flange 6 is located directly above the discharge hole 7, and the support rod 8 extends from the lower surface of the connecting rod 3, so that when the connecting rod 3 is affected by gravity and overcomes the buoyancy to fall, the force is effectively transmitted to the support rod 8.

[0028] In particular, the hinge of the connecting rod 3 on the sealing flange 6 is located at the center of the sealing flange 6, and the discharge hole 7 is eccentrically arranged on the sealing flange 6, ensuring that the connecting rod 3 can have a maximum swing angle when moving in the drainage pipe 5.

[0029] Preferably, the angle between the support rod 8 and the connecting rod 3 is 10° to 20°. At this angle, a small movement of the connecting rod 3 can drive the sealing plug 9 on the support rod 8 to cooperate with the discharge hole 7, while ensuring the sensitivity of triggering hydrophobicity without affecting the movement of the connecting rod 3 in the drainage pipe 5.

[0030] In particular, the sealing plug 9 is hemispherical, and the opening surface of the discharge hole 7 is a curved surface adapted to the spherical surface of the sealing plug 9 , thereby improving the sealing effect of the sealing plug 9 on the discharge hole 7 .

[0031] Furthermore, the sealing plug 9 is an elastic rubber body, and when the sealing plug 9 is pressed against the opening of the discharge hole 7, the sealing effect is further ensured.

[0032] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Automatic steam trap, characterized in that: The invention comprises a steam trap cylinder (1), a floating ball body (2) and a connecting rod (3) arranged in the steam trap cylinder (1); the steam trap cylinder (1) is provided with an inlet pipe (4) and a drainage pipe (5); a sealing flange (6) is provided at the end of the drainage pipe (5); a discharge hole (7) is provided on the sealing flange (6); one end of the connecting rod (3) is connected to the floating ball body (2); the other end of the connecting rod (3) passes through the drainage pipe (5) and is connected to the inner surface of the sealing flange (6); a supporting rod (8) is obliquely extended from the connecting rod (3); a sealing plug (9) is provided at the end of the supporting rod (8); When the liquid level in the steam trap cylinder (1) is not higher than a set value, the connecting rod (3) drives the support rod (8) to press against the sealing flange (6) under the action of gravity, and the sealing plug (9) blocks the discharge hole (7); When the liquid level in the steam trap cylinder (1) is higher than the set value, the connecting rod (3) drives the support rod (8) away from the sealing flange (6) under the action of the buoyancy of the float body (2), and the sealing plug (9) is separated from the discharge hole (7).

2. The automatic steam trap according to claim 1, characterized in that: The two ends of the connecting rod (3) are respectively hinged to the floating ball (2) and the sealing flange (6), and the hinge point of the connecting rod (3) on the sealing flange (6) is located directly above the discharge hole (7), and the support rod (8) extends from the lower surface of the connecting rod (3).

3. The automatic steam trap according to claim 2, characterized in that: The hinge of the connecting rod (3) on the sealing flange (6) is located at the center of the sealing flange (6), and the discharge hole (7) is eccentrically arranged on the sealing flange (6).

4. The automatic steam trap according to claim 2, characterized in that: The included angle between the support rod (8) and the connecting rod (3) is 10° to 20°.

5. The automatic steam trap according to claim 1, characterized in that: The sealing plug (9) is hemispherical, and the orifice surface of the discharge hole (7) is a curved surface adapted to the spherical surface of the sealing plug (9).

6. The automatic steam trap according to claim 5, characterized in that: The sealing plug (9) is an elastic rubber body.

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