Drain valve with opening convenient to adjust

Abstract

The utility model discloses a drain valve with the opening degree convenient to adjust. A fixing rod is provided with an arc-shaped valve element rod with a first hinge position as the circle center. According to the drain valve with the opening degree convenient to adjust, the valve element rod and the through hole both take the first hinge position as the circle center, so that the through hole does not interfere with the valve element rod to rotate; the cross section of the valve element rod is not uniform, when the floating ball is located at the lowest position, the valve element rod seals the through hole, and when the floating ball moves from the lowest position to the highest position, the area of the through hole filled with the valve element rod is gradually reduced, so that the exposed area of the whole through hole is continuously increased, and in the process, the opening degree of the whole drain valve is adjusted. In the working process, the valve element rod is stable and smooth, meanwhile, the through hole can be naturally cleaned, and therefore work of the drain valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of steam traps, and particularly relates to a steam trap with convenient opening adjustment. Background Art

[0002] A float steam trap is a device used in a pipeline system, which uses a float to control the flow of liquid or steam. When the water level in the pipeline rises, the float will rise with the water level, thereby opening the valve to drain the excess water; when the water level drops, the float drops and the valve closes to prevent air from entering the system. This kind of valve is often used in steam systems to help drain condensate and keep the system running efficiently.

[0003] The characteristics of the float controlling the opening and closing of the valve body are of two types: fixed type and adjustable type. The fixed type only has two states: opening and closing, while the adjustable type has an adjustment for the opening state. Specifically, the opening of the entire steam trap is automatically adjusted by the height of the float. The working stability of the adjustable type is poor, and in the adjustable type, since the opening can be adjusted, the possibility of abnormal position of the valve core increases. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a steam trap with convenient opening adjustment, aiming to solve the problems that the working stability of the adjustable steam trap is poor, and since the opening can be adjusted, the possibility of abnormal position of the valve core increases.

[0005] To achieve the above purpose, the utility model provides a steam trap with convenient opening adjustment, including:

[0006] A valve cover, with the two ends in the length direction being the inlet and the outlet respectively;

[0007] A valve body, with a spherical cavity inside, and detachably combined with the valve cover, and the inner end of the inlet is communicated with the spherical cavity;

[0008] A valve seat in a cylindrical shape, with the two ends in the length direction being the inner end and the outer end respectively. The inner end is connected to the valve cover and communicated with the outlet. A partition is enclosed inside the outer end, and a first hinge position is arranged in the thickness direction of the outer end. An arc-shaped through hole with the first hinge position as the center of the circle is arranged on the partition;

[0009] A float assembly, including a float and a fixed rod. One end of the fixed rod is connected to the float, and the other end is hinged to the first hinge position. An arc-shaped valve core rod with the first hinge position as the center of the circle is arranged on the fixed rod;

[0010] An exhaust valve, arranged above the valve seat and communicated with the outlet;

[0011] Wherein, when the float ball is in the lowest position, the valve core rod closes the through hole, and when the float ball moves from the lowest position to the highest position, the area of the through hole filled by the valve core rod gradually becomes smaller.

[0012] Further, one end of the fixed rod connected to the valve seat has two rod legs spaced apart in the width direction, wherein the two rod legs clamp the width direction of the valve seat.

[0013] Further, an installation block is connected between the two rod legs, and the valve core rod is arranged on the installation block.

[0014] Further, when the float ball moves in the highest position, the valve core rod is located within the through hole.

[0015] Further, the valve core rod is always in contact with the through hole.

[0016] Further, a sealing piece is arranged on the valve core rod, wherein when the float ball is in the lowest position, the sealing piece closes the through hole.

[0017] Further, the sealing piece is integrally formed on the valve core rod.

[0018] Further, a sealing ring is also connected corresponding to the sealing piece, and when the float ball is in the lowest position, the sealing ring closes the through hole.

[0019] Further, the valve core rod is detachably arranged on the fixed rod.

[0020] Further, the cross-section of the through hole is circular.

[0021] The trap with convenient opening adjustment provided by the present utility model has an arc-shaped through hole with the first hinge position as the center on the partition plate. During the rotation of the float assembly, the valve core rod also rotates accordingly. Since both the valve core rod and the through hole are centered on the first hinge position, the through hole will not interfere with the rotation of the valve core rod. The cross-section of the valve core rod is not uniform. When the float ball is in the lowest position, the valve core rod closes the through hole. When the float ball moves from the lowest position to the highest position, the area of the through hole filled by the valve core rod gradually becomes smaller, so that the area of the entire through hole exposed continuously increases. During this process, the opening of the entire trap is adjusted. During the working process of the valve core rod, while being stable and smooth, it can naturally clean the through hole, thus ensuring the normal operation of the trap. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the trap with convenient opening adjustment according to the first embodiment of the present utility model;

[0023] Figure 2It is a schematic diagram of the connection of the valve cover, valve body and valve seat in the trap with convenient opening degree adjustment of the first embodiment of the present utility model;

[0024] Figure 3 It is a schematic diagram of the float assembly in the trap with convenient opening degree adjustment of the first embodiment of the present utility model;

[0025] Figure 4 It is a schematic diagram of the operation of the trap with convenient opening degree adjustment of the first embodiment of the present utility model (the float assembly is in the low position);

[0026] Figure 5 It is a schematic diagram of the operation of the trap with convenient opening degree adjustment of the first embodiment of the present utility model (the float assembly is in the high position).

[0027] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0028] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] Those skilled in the art of the present technology can understand that unless specifically stated otherwise, the singular forms "a", "an", "the", "above-mentioned" and "this" used herein may also include the plural forms. It should be further understood that the term "including" used in the description of the present utility model means the presence of the described features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0030] Those skilled in the art of the present technology can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0031] Referring to Figures 1 to 5 , in an embodiment of the present utility model, a trap with convenient opening degree adjustment includes:

[0032] The valve cover 100 has an inlet 110 and an outlet 120 at both ends in the length direction;

[0033] The valve body 200 has a spherical cavity inside and is detachably combined with the valve cover 100, and the inner end of the inlet 110 communicates with the spherical cavity;

[0034] The valve seat 300 in a cylindrical shape has an inner end and an outer end at both ends in the length direction. The inner end is connected to the valve cover 100 and communicates with the outlet 120. A partition 310 is enclosed inside the outer end, and a first hinge position 320 is provided in the thickness direction of the outer end. An arc-shaped through hole 311 centered on the first hinge position 320 is provided on the partition 310;

[0035] The floating ball assembly 400 includes a floating ball 410 and a fixing rod 420. One end of the fixing rod 420 is connected to the floating ball 410, and the other end is hinged to the first hinge position 320. An arc-shaped valve core rod 430 centered on the first hinge position 320 is provided on the fixing rod 420;

[0036] The drain valve 500 is arranged above the valve seat 300 and communicates with the outlet 120;

[0037] Wherein, when the floating ball 410 is in the lowest position, the valve core rod 430 closes the through hole 311, and when the floating ball 410 moves from the lowest position to the highest position, the area of the through hole 311 filled by the valve core rod 430 gradually becomes smaller.

[0038] In the prior art, the working stability of the adjustable steam trap is poor, and in the adjustable type, since the opening degree can be adjusted, the possibility of abnormal valve core position increases.

[0039] For the steam trap with convenient opening degree adjustment provided by the present utility model, the inlet 110 and the outlet 120 are respectively arranged at both ends in the length direction of the valve cover 100. The inlet 110 is the position where the fluid enters, and the outlet 120 is the position where the fluid flows out.

[0040] The valve body 200 has a spherical cavity inside and is detachably combined with the valve cover 100. The inner end of the inlet 110 communicates with the spherical cavity. The spherical cavity is the working position of the subsequent floating ball assembly 400, and condensate, water vapor and non-condensable gas are all introduced into the spherical cavity.

[0041] The two ends of the cylindrical valve seat 300 in the length direction are an inner end and an outer end respectively. The inner end is connected to the valve cover 100 and communicates with the outlet 120. A partition 310 is enclosed inside the outer end, and a first hinge position 320 is provided in the thickness direction of the outer end. An arc-shaped through hole 311 centered on the first hinge position 320 is provided on the partition 310. The through hole 311 is the working position of the subsequent valve core rod 430. The position of the first hinge position 320 can correspond to the partition 310.

[0042] The float assembly 400 includes a float 410 and a fixing rod 420. One end of the fixing rod 420 is connected to the float 410, and the other end is hinged to the first hinge position 320. When the water level in the ball cavity changes, the float assembly 400 can rotate around the first hinge position 320. An arc-shaped valve core rod 430 centered on the first hinge position 320 is provided on the fixing rod 420. The fixing method of the valve core rod 430 is not limited, and specifically, it is subject to the position of the valve core rod 430 being able to form a matching operation with the through hole 311. During the rotation of the float assembly 400, the valve core rod 430 also rotates accordingly. Since both the valve core rod 430 and the through hole 311 are centered on the first hinge position 320, the through hole 311 will not interfere with the rotation of the valve core rod 430.

[0043] The drain valve 500 is arranged above the valve seat 300 and conducts to the outlet 120. The function of the drain valve is to discharge the non-condensable gas in the ball cavity. Specifically, the structural type of the drain valve 500 is not the focus of this application, and reference can be made to the common settings in the prior art.

[0044] When the float 410 is in the lowest position, the valve core rod 430 closes the through hole 311. The cross-section of the valve core rod 430 is not uniform. When the float 410 moves from the lowest position to the highest position, the area of the through hole 311 filled by the valve core rod 430 gradually becomes smaller, so that the area of the entire through hole 311 exposed continuously increases. During this process, the opening degree of the entire steam trap is adjusted. In particular, during the operation of the valve core rod 430, while being stable and smooth, it can naturally clean the through hole 311, thus ensuring the operation of the steam trap.

[0045] In summary, the partition plate 310 is provided with an arc-shaped through hole 311 centered on the first hinge position 320. During the rotation of the float assembly 400, the valve core rod 430 also rotates accordingly. Since both the valve core rod 430 and the through hole 311 are centered on the first hinge position 320, the through hole 311 will not interfere with the rotation of the valve core rod 430. The cross-section of the valve core rod 430 is not uniform. When the float 410 is in the lowest position, the valve core rod 430 closes the through hole 311. When the float 410 moves from the lowest position to the highest position, the area of the through hole 311 filled by the valve core rod 430 gradually decreases, so that the area of the entire through hole 311 exposed continuously increases. During this process, the opening degree of the entire steam trap is adjusted. During the operation of the valve core rod 430, while being stable and smooth, it can naturally clean the through hole 311, thus ensuring the operation of the steam trap.

[0046] Referring to Figures 3 to 5 , in one embodiment, one end of the fixed rod 420 connected to the valve seat 300 has two rod legs spaced apart in the width direction, wherein the two rod legs clamp the width direction of the valve seat 300.

[0047] In this embodiment, a simple and stable structure of the fixed rod 420 is provided, thereby reducing the possibility of abnormal movement of the float assembly 400. The first hinge position 320 of the valve seat 300 includes two fixing holes, and fixing shafts corresponding to the fixing holes are provided on the rod legs, so that the rod legs and the valve seat 300 can form a hinge fit. Furthermore, the float assembly 400 can be stably fixed on the valve seat 300.

[0048] Referring to Figures 3 to 5 , in one embodiment, an installation block 440 is connected between the two rod legs, and the valve core rod 430 is arranged on the installation block 440.

[0049] In this embodiment, a fixing method of the valve core rod 430 is provided, and the installation block 440 can also assist in enhancing the structural strength of the fixed rod 420. The connection method between the installation block 440 and the rod legs can be screw connection or the like. The valve core rod 430 and the installation block 440 can be connected to the installation block 440 or integrally formed.

[0050] Referring to Figures 3 to 5 , in one embodiment, when the float 410 moves from the highest position, the valve core rod 430 is located in the through hole 311.

[0051] In this embodiment, the valve core rod 430 is restricted from disengaging from the through hole 311 all the time, so that the valve core rod 430 will not have an accidental misalignment.

[0052] Referring to Figures 3 to 5, in one embodiment, the valve core rod 430 is always in contact with the through hole 311.

[0053] In this embodiment, through the above settings, the guiding effect between the valve core rod 430 and the through hole 311 is improved, and the possibility of misalignment between the two is further reduced. For example, the inner arc of the valve core rod 430 in the length direction is always in contact with the inner upper surface of the through hole 311, so as to achieve the guiding effect.

[0054] In one embodiment, a sealing piece 431 is provided on the valve core rod 430. When the float ball 410 is in the lowest position, the sealing piece 431 closes the through hole 311.

[0055] In this embodiment, by adding the sealing piece 431 on the valve core rod 430, when the float ball 410 is in the lowest position, the sealing piece 431 assists the valve core rod 430 to complete the closing function, thus ensuring the closed state of the steam trap.

[0056] In one embodiment, the sealing piece 431 is integrally formed on the valve core rod 430.

[0057] In this embodiment, a setting method of the sealing piece 431 is given, which simplifies the processing process and the installation process. In order to improve the effect of the sealing piece 431, a damping pad can also be provided on the surface of the sealing piece 431 corresponding to the partition plate 310, so as to improve the sealing effect.

[0058] In one embodiment, a sealing ring is also connected to the corresponding sealing piece 431. When the float ball 410 is in the lowest position, the sealing ring closes the through hole 311.

[0059] In this embodiment, a sealing optimization scheme is given, so as to ensure the closed state of the steam trap. The material of the sealing ring is preferably a high polymer material that can withstand higher temperatures, such as polyurethane.

[0060] In one embodiment, the valve core rod 430 is detachably arranged on the fixed rod 420.

[0061] In this embodiment, the valve core rod 430 is set to be detachable, so that the size of the through hole 311 on the partition plate 310 can be set slightly larger. Thus, by adjusting the model of the valve core rod 430, the working state of the steam trap can be adjusted to meet the requirements of different scenarios.

[0062] In one embodiment, the cross section of the through hole 311 is circular.

[0063] In this embodiment, the shape of the through hole 311 is defined, so that the cooperation between the valve core rod 430 and the through hole 311 is smoother.

[0064] In summary, for the steam trap with convenient opening adjustment provided by the present utility model, an arc-shaped through hole 311 centered on the first hinge position 320 is provided on the partition plate 310. During the rotation of the float assembly 400, the valve core rod 430 also rotates accordingly. Both the valve core rod 430 and the through hole 311 are centered on the first hinge position 320, so the through hole 311 will not interfere with the rotation of the valve core rod 430; the cross-section of the valve core rod 430 is not uniform. When the float 410 is in the lowest position, the valve core rod 430 closes the through hole 311. When the float 410 moves from the lowest position to the highest position, the area of the through hole 311 filled by the valve core rod 430 gradually decreases, so that the area of the entire through hole 311 exposed continuously increases. During this process, the opening of the entire steam trap is adjusted; during the operation of the valve core rod 430, while being stable and smooth, it can naturally clean the through hole 311, thus ensuring the operation of the steam trap.

[0065] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A trap with convenient opening degree adjustment, characterized in that, Comprising: A valve cover (100) with an inlet (110) and an outlet (120) at two ends in the length direction; A valve body (200) with a spherical cavity inside and detachably coupled to the valve cover (100), and the inner end of the inlet (110) communicates with the spherical cavity; A cylindrical valve seat (300) with an inner end and an outer end at two ends in the length direction. The inner end is connected to the valve cover (100) and communicates with the outlet (120). A partition (310) is enclosed inside the outer end. A first hinge position (320) is provided in the thickness direction of the outer end. An arc-shaped through hole (311) centered on the first hinge position (320) is provided on the partition (310); A floating ball assembly (400) including a floating ball (410) and a fixing rod (420). One end of the fixing rod (420) is connected to the floating ball (410), and the other end is hinged to the first hinge position (320). An arc-shaped valve core rod (430) centered on the first hinge position (320) is provided on the fixing rod (420); An evacuation valve (500) is provided above the valve seat (300) and communicates with the outlet (120); Wherein, when the floating ball (410) is in the lowest position, the valve core rod (430) closes the through hole (311). When the floating ball (410) moves from the lowest position to the highest position, the area of the through hole (311) filled by the valve core rod (430) gradually becomes smaller.

2. The trap with conveniently adjustable opening degree according to claim 1, wherein, One end of the fixing rod (420) connected to the valve seat (300) has two leg portions spaced apart in the width direction. Among them, the two leg portions clamp the width direction of the valve seat (300).

3. The trap with conveniently adjustable opening degree according to claim 2, characterized in that, An installation block (440) is connected between the two leg portions, and the valve core rod (430) is arranged on the installation block (440).

4. The trap with conveniently adjustable opening degree according to claim 1, characterized in that, When the floating ball (410) moves in the highest position, the valve core rod (430) is located in the through hole (311).

5. The trap with conveniently adjustable opening degree according to claim 4, wherein The valve core rod (430) is always in contact with the through hole (311).

6. The trap with conveniently adjustable opening degree according to claim 1, wherein A sealing piece (431) is provided on the valve core rod (430). Wherein, when the floating ball (410) is in the lowest position, the sealing piece (431) closes the through hole (311).

7. The trap with conveniently adjustable opening degree according to claim 6, wherein The sealing piece (431) is integrally formed on the valve core rod (430).

8. The trap with conveniently adjustable opening degree according to claim 7, wherein A sealing ring is also connected corresponding to the sealing piece (431). When the floating ball (410) is in the lowest position, the sealing ring closes the through hole (311).

9. The trap with convenient opening degree adjustment according to any one of claims 1 to 8, characterized in that, The valve core rod (430) is detachably arranged on the fixing rod (420).

10. The trap with convenient opening degree adjustment according to any one of claims 1 to 8, characterized in that, The cross-section of the through hole (311) is circular.

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