A steam trap

Abstract

The present invention discloses a drain valve, comprising a valve body, a ball cavity being provided inside the valve body, a spherical liner being movably connected inside the ball cavity, a water inlet pipe and a water outlet pipe being provided on the outside of the valve body and being communicated with the ball cavity, the water inlet pipe and the water outlet pipe being perpendicular to each other, a lining cavity being provided inside the spherical liner, a mounting groove being provided on the side of the spherical liner facing the water outlet pipe, a spherical block being fixedly provided at the mounting groove, a first cavity being formed between the end portion thereof and the spherical block in the mounting groove; a communicating hole being provided in the spherical liner, a valve control assembly being provided in the lining cavity; a first arc groove being provided in the valve body at a position facing the water outlet pipe, and a second arc groove for communicating the first arc groove and the ball cavity, a convex rod being provided on the spherical liner and extending into the second arc groove, and a positioning assembly being provided at one end of the convex rod extending into the first arc groove; the drain valve is not only simple in structure, but also capable of maintaining normal operation under different installation environments.

Description

Technical Field

[0001] The present invention relates to the technical field of steam traps, and in particular to a steam trap. Background Art

[0002] The basic form of the existing float-type steam trap is that one end of the lever is connected to the float, the valve disc is in the middle of the lever, and the other end of the lever is hinged to the support. When the float rises, the valve disc opens, and condensate flows out of the valve. When the float falls, the valve disc closes, preventing steam from flowing out of the valve. This type of steam trap is generally called a lever float-type steam trap. This type of steam trap often has the following problems when in use:

[0003] 1. Due to the structural characteristics of the float type steam trap, it must be placed horizontally when in use. However, due to the limitations of piping and installation space, it is difficult to provide horizontal installation conditions for the float type steam trap, which brings many difficulties to the use of the steam trap;

[0004] 2. Since condensate water is often mixed with impurities, which can prevent the trap valve core from closing completely and causing air leakage, a filter is installed at the inlet of the trap. However, when replacing the filter, the trap needs to be removed and replaced, and the system needs to be suspended before replacement, which will affect the operation of the system. Summary of the Invention

[0005] The object of the present invention is to provide a steam trap which is not only simple in structure but also capable of maintaining normal operation in different installation environments.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a steam trap, comprising a valve body, a spherical cavity is provided inside the valve body, a spherical liner is movably connected inside the spherical cavity, an inlet pipe and an outlet pipe connected to the spherical cavity are provided on the outside of the valve body, the inlet pipe and the outlet pipe are perpendicular to each other, an inner lining cavity connected to the water inlet pipe is provided inside the spherical liner, the spherical liner is provided with a mounting groove on the side facing the outlet pipe, a spherical block is fixedly provided at the mounting groove, and a first chamber connected to the outlet pipe is formed in the mounting groove between its end and the spherical block; The spherical liner is provided with a connecting hole for connecting the lining cavity and the first cavity, and the lining cavity is provided with a valve control component for controlling the opening and closing of the connecting hole; the valve body is provided with a first arc groove at a position opposite to the water outlet pipe, and a second arc groove for connecting the first arc groove and the spherical cavity, the width of the first arc groove is greater than the width of the second arc groove, the spherical liner is provided with a protruding rod extending into the second arc groove, the protruding rod is perpendicular to the end face of the mounting groove, and the protruding rod is provided with a positioning component at one end extending into the first arc groove, and the positioning component is used to position the protruding rod.

[0007] Furthermore, the valve control assembly includes a valve stem, a surrounding plate is provided at the communicating hole in the inner lining cavity, an end cover is fixedly provided at the upper end of the surrounding plate, the valve stem is connected to the end cover in an axial sliding manner along the communicating hole, and the valve stem is provided with a valve disc for controlling the on and off of the communicating hole at one end extending into the surrounding plate; the upper end of the end cover is hinged with a float rod near the side wall of the inner lining cavity, the end of the float rod is provided with a float ball, a limiting slide groove is provided in the float rod, and the upper end of the valve stem is provided with a protrusion extending into the limiting slide groove; when the float ball moves upward, the float rod drives the valve disc upward through the valve stem to open the communicating hole, and when the float ball moves downward, the float rod drives the valve disc downward through the valve stem to close the communicating hole.

[0008] Furthermore, the positioning assembly includes a positioning slide, the end of the protruding rod extending into the first arc groove is provided with an end block slidably connected to the first arc groove, the end block is provided with a first slide groove along the radial direction of the spherical lining, the positioning slide is slidably connected to the first slide groove, the end block is fixed with a blocking plate at the opening of the first slide groove, one side of the positioning slide is provided with a pull rod extending out of the blocking plate, and the other side is provided with a positioning rod extending out of the end block, a plurality of positioning tooth grooves for the positioning rod to extend into are provided at the opening of the second arc groove in the first arc groove along the arc direction of the first arc groove, and a first spring is provided between the positioning slide and the blocking plate in the first slide groove for forcing the positioning slide to drive the positioning rod to extend into the positioning tooth groove.

[0009] Furthermore, the inner side wall of the spherical cavity is provided with a water inlet groove connected to the water inlet pipe, and the side wall of the spherical liner is provided with a water inlet hole for connecting the water inlet groove and the liner cavity.

[0010] Furthermore, the inner side wall of the spherical cavity is provided with a water outlet groove connected to the water outlet pipe, and the spherical block is provided with a water outlet hole for connecting the water outlet groove and the first chamber.

[0011] Furthermore, a rotation groove connected to the water inlet pipe is provided on the valve body at the water inlet pipe, and a first shaft rod is fixedly provided in the rotation groove along the axial direction of the water inlet pipe, and a first bevel gear plate located in the rotation groove is rotatably connected to the first shaft rod, and two mounting holes are symmetrically provided on the first bevel gear plate, and a filter is provided in each mounting hole; a replacement port connected to the rotation groove is provided on the outside of the valve body, and a cover plate is provided at the replacement port; when one of the mounting holes is coaxial with the water inlet pipe, the other mounting hole is located at a position coaxial with the replacement port.

[0012] Furthermore, the outer side of the valve body is rotatably connected with a second shaft rod between the first arc groove and the first bevel gear plate, and the second shaft rod is coaxially fixed with a second bevel gear plate and a third bevel gear plate, and the second bevel gear plate is meshed with the first bevel gear plate; the valve body is provided with a third arc groove along the tangential direction of the third bevel gear plate at one end of the first arc groove close to the third bevel gear plate, and a fourth arc groove for connecting the third arc groove and the ball cavity, the width of the third arc groove is the same as the width of the first arc groove, and the width of the fourth arc groove is the same as the width of the second arc groove; a second sliding groove is provided in the end block, a first slide is provided in the second sliding groove, and a second spring for forcing the first slide plate to move toward the second bevel gear plate, the first slide is provided with a first slider extending toward the third bevel gear plate, and the first slider is provided with a ratchet at the end away from the first slide; when the end block slides in the third arc groove, the third bevel gear plate is driven to rotate unidirectionally by the ratchet on the first slider.

[0013] Beneficial effects

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0015] 1. By using the spherical liner and the valve body, when the valve body of the steam trap is not installed horizontally, the spherical liner can be placed horizontally by adjusting the angle between the spherical liner and the valve body, making the installation of the steam trap more convenient;

[0016] 2. By using the ratchet and the third conical tooth plate in combination with the filter screen arranged on the first conical tooth plate, the filter screen can be rotated by controlling the first conical tooth plate by rotating the spherical liner, thereby replacing the filter screen without disassembling the steam trap. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of the present invention;

[0018] Figure 2 For the present invention Figure 1 Cross-sectional view in the AA direction;

[0019] Figure 3 This is a cross-sectional view of the present invention after tilt installation;

[0020] Figure 4 This is a cross-sectional view of the present invention after tilt installation;

[0021] Figure 5 For the present invention Figure 1 Enlarged view at point I in the middle;

[0022] Figure 6 For the present invention Figure 5 Cross-sectional view in CC direction;

[0023] Figure 7For the present invention Figure 1 Cross-sectional view in the BB direction. DETAILED DESCRIPTION

[0024] See also Figure 1-7 As shown, a steam trap comprises a valve body 1, wherein a ball cavity 1a is provided inside the valve body 1, a spherical liner 2 is movably connected inside the ball cavity 1a, an inlet pipe 1b and an outlet pipe 1c communicating with the ball cavity 1a are provided on the outside of the valve body 1, the inlet pipe 1b and the outlet pipe 1c are perpendicular to each other, an inner lining cavity 26 communicating with the inlet pipe 1b is provided inside the spherical liner 2, the spherical liner 2 is provided with a mounting groove 2a on the side facing the outlet pipe 1c, a spherical block 2b is fixedly provided at the mounting groove 2a, a first chamber 23 communicating with the outlet pipe 1c is formed in the mounting groove 2a between its end and the spherical block 2b; a first chamber 23 communicating with the outlet pipe 1c is formed in the spherical liner 2 A connecting hole 22 is used to connect the lining cavity 26 and the first cavity 23, and a valve control component is provided in the lining cavity 26 for controlling the opening and closing of the connecting hole 22; a first arc groove 1d is provided in the valve body 1 opposite to the outlet pipe 1c, and a second arc groove 11 is provided for connecting the first arc groove 1d and the spherical cavity 1a, the width of the first arc groove 1d is greater than the width of the second arc groove 11, and a protruding rod 2c extending into the second arc groove 11 is provided on the spherical lining 2, and the protruding rod 2c is perpendicular to the end face of the mounting groove 2a, and a positioning component is provided at one end of the protruding rod 2c extending into the first arc groove 1d, and the positioning component is used to position the protruding rod 2c.

[0025] The valve control assembly includes a valve stem 5a, a surrounding plate 1e is provided at the communicating hole 22 in the lining cavity 26, and an end cover 1f is fixedly provided at the upper end of the surrounding plate 1e. The valve stem 5a is slidably connected to the end cover 1f along the axial direction of the communicating hole 22, and a valve disc 5 for controlling the opening and closing of the communicating hole 22 is provided at one end of the valve stem 5a extending into the surrounding plate 1e; a first through hole 21 communicating with the lining cavity 26 is provided in the surrounding plate 1e; a float rod 4 is hingedly connected to the upper end of the end cover 1f near the side wall of the lining cavity 26, and a float ball 3 is provided at the end of the float rod 4. A limiting slide groove 41 is provided in the float rod 4, and a protrusion 51 extending into the limiting slide groove 41 is provided at the upper end of the valve stem 5a; when the float ball 3 moves upward, the float rod 4 drives the valve disc 5 to open the communicating hole 22 upward through the valve stem 5a; when the float ball 3 moves downward, the float rod 4 drives the valve disc 5 to close the communicating hole 22 downward through the valve stem 5a. The positioning assembly includes a positioning slide 8a, and the end of the protruding rod 2c extending into the first arc groove 1d is provided with an end block 27 slidably connected to the first arc groove 1d, and a first slide groove 2d is provided in the end block 27 along the radial direction of the spherical liner 2, and the positioning slide 8a is slidably connected in the first slide groove 2d, and the end block 27 is fixedly provided with a blocking plate 2e at the opening of the first slide groove 2d, and a pull rod 81 extending out of the blocking plate 2e is provided on one side of the positioning slide 8a, and a positioning rod 8b extending out of the end block 27 is provided on the other side, and a plurality of positioning tooth grooves 13 for the positioning rod 8b to extend into are provided at the opening of the second arc groove 11 in the first arc groove 1d along the arc direction of the first arc groove 1d, and a first spring 82 for forcing the positioning slide 8a to drive the positioning rod 8b to extend into the positioning tooth groove 13 is provided between the positioning slide 8a and the blocking plate 2e in the first slide groove 2d.

[0026] The inner sidewall of the spherical cavity 1a is provided with a water inlet groove 14 connected to the water inlet pipe 1b, and the sidewall of the spherical liner 2 is provided with a water inlet hole 25 for connecting the water inlet groove 14 and the liner cavity 26. The inner sidewall of the spherical cavity 1a is provided with a water outlet groove 15 connected to the water outlet pipe 1c, and the spherical block 2b is provided with a water outlet hole 24 for connecting the water outlet groove 15 and the first chamber 23.

[0027] A rotation groove 1h connected to the water inlet pipe 1b is provided in the valve body 1 at the water inlet pipe 1b, and a first shaft rod 1k is fixedly provided in the rotation groove 1h along the axial direction of the water inlet pipe 1b. The first shaft rod 1k is rotatably connected to a first bevel tooth plate 71 located in the rotation groove 1h, and two mounting holes 7a are symmetrically provided on the first bevel tooth plate 71, and a filter screen 72 is provided in each mounting hole 7a; a replacement port 1j connected to the rotation groove 1h is provided on the outside of the valve body 1, and a cover plate 1i is provided at the replacement port 1j; when one of the mounting holes 7a is coaxial with the water inlet pipe 1b, the other mounting hole 7a is located at a position coaxial with the replacement port 1j. The outer side of the valve body 1 is rotatably connected with a second shaft rod 1m between the first arc groove 1d and the first bevel gear plate 71, and the second shaft rod 1m is coaxially fixed with a second bevel gear plate 62 and a third bevel gear plate 61, and the second bevel gear plate 62 is engaged with the first bevel gear plate 71; the valve body 1 is provided with a third arc groove 121 at one end of the first arc groove 1d close to the third bevel gear plate 61 along the tangential direction of the third bevel gear plate 61, and a fourth arc groove 12 for connecting the third arc groove 121 and the ball cavity 1a, and the width of the third arc groove 121 is the same as that of the first arc groove 1d. The width of the fourth arc groove 12 is the same as that of the second arc groove 11; a second slide groove 2f is provided in the end block 27, a first slide plate 9a is provided in the second slide groove 2f, and a second spring 92 for forcing the first slide plate 9a to move toward the second bevel gear plate 62, the first slide plate 9a is provided with a first slider 91a extending toward the third bevel gear plate 61, and the first slider 91a is provided with a ratchet 91 at the end away from the first slider 9a; when the end block 27 slides in the third arc groove 121, the third bevel gear plate 61 is driven to rotate in one direction by the ratchet 91 on the first slider 91a.

[0028] like Figure 1 The structure diagram of the present invention is shown. When using the present invention, first, the steam trap needs to be installed on the system pipeline. When the steam trap is installed horizontally, as shown in FIG. Figure 1 The protruding rod is shown in a vertical position to facilitate the entry of condensed water from the water inlet pipe 1b and the discharge from the water outlet pipe 1c. When condensed water appears in the system pipeline, the condensed water enters the water inlet pipe 1b through the filter screen 72, the water inlet trough 14, the water inlet hole 25, and enters the lining cavity 26. When the condensed water accumulates to a certain amount, it will push the float up under the action of buoyancy, thereby driving the float rod 4 to rotate. As the protrusion 51 slides in the limiting slide groove 41, the valve stem 5a drives the valve disc 5 to rise with the float, thereby opening the connecting hole 22, allowing the water in the lining cavity 26 to be discharged through the first through hole 21, the connecting hole 22, the first chamber 23, the water outlet hole 24, the water outlet trough 15, and the water outlet pipe 1c. When the condensed water is discharged, the float falls, causing the valve stem 5a to drive the valve disc 5 to close the connecting hole 22, completing the water drainage action.

[0029] When the water inlet pipe 1b of the steam trap cannot be installed horizontally due to pipeline or space limitations, the water inlet pipe 1b needs to be connected to the pipeline first, and then the first spring 82 is overcome and the positioning rod 8b is pulled outward by the pull rod 81 to disengage the positioning rod 8b from the positioning tooth groove 13, and the spherical liner 2 is disengaged. Then, the end block 27 is rotated along the first arc groove 1d, and the spherical liner 2 is driven to rotate through the protruding rod 2c, and the spherical liner 2 is adjusted so that the protruding rod 2c is in a vertical position (such as Figure 3 、 4 As shown), loosen the pull rod 81, and under the action of the first spring 82, the positioning rod 8b is inserted into the positioning tooth groove 13, and the protruding rod 2c is positioned to achieve the repositioning of the spherical liner 2 to complete the installation.

[0030] When the steam trap has been working for a long time and the filter screen 72 needs to be replaced, first, it is necessary to overcome the first spring 82 to pull the pull rod 81 outward, so that the positioning rod 8b is disengaged from the positioning tooth groove 13, the spherical liner 2 is out of position, and the end block 27 is rotated along the first arc groove 1d so that the end block 27 comes into the third arc groove 121. At this time, the ratchet 91 on the first slider 91a is engaged with the third bevel gear plate 61, and the end block 27 is rotated along the third arc groove. The third bevel gear plate 61 is driven to rotate by the ratchet 91 on the first slider 91a. Since the third bevel gear plate 61 and the second bevel gear plate 62 are coaxially fixedly connected, the second bevel gear plate 62 follows the rotation. Since the second bevel gear plate 62 is engaged with the first bevel gear plate 71, the first bevel gear plate 61 is engaged with the third bevel gear plate 61. The plate 71 also rotates accordingly, and then the filter screen 72 that cooperates with the water inlet pipe 1b is turned to the replacement port 1j to facilitate opening the cover plate 1i for replacement; then the end block 27 is rotated along the third arc groove 121, and with the cooperation of the second spring 92, the ratchet 91 on the first slider 91a and the third bevel plate 61, the third bevel plate 61 does not rotate with it, and the end block 27 enters the first arc groove 1d, and then the end block 27 is rotated along the first arc groove 1d to adjust the protruding rod 2c to a vertical position. At this time, the spherical liner 2 is adjusted to a horizontal position, and the pull rod 81 is released. The positioning rod 8b cooperates with the positioning tooth groove 13 under the action of the first spring 82, and the spherical liner 2 is repositioned to complete the replacement of the filter screen 72.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A steam trap, comprising a valve body, characterized in that: A ball cavity is provided inside the valve body, a spherical liner is movably connected inside the ball cavity, a water inlet pipe and a water outlet pipe connected to the ball cavity are provided on the outside of the valve body, the water inlet pipe and the water outlet pipe are perpendicular to each other, a lining cavity connected to the water inlet pipe is provided inside the spherical liner, the spherical liner is provided with a mounting groove on the side facing the water outlet pipe, a spherical block is fixed at the mounting groove, and a first chamber connected to the water outlet pipe is formed between the end of the mounting groove and the spherical block; a spherical liner is provided inside the spherical liner for connecting to the lining cavity and a communicating hole with the first chamber, a valve control assembly for controlling the on-off of the communicating hole is provided in the lining cavity; a first arcuate groove is provided in the valve body at a position directly opposite the outlet pipe, and a second arcuate groove for connecting the first arcuate groove and the ball cavity, the width of the first arcuate groove is greater than the width of the second arcuate groove, a convex rod is provided on the spherical liner and extends into the second arcuate groove, the convex rod is perpendicular to the end surface of the mounting groove, and a positioning assembly is provided at one end of the convex rod extending into the first arcuate groove, the positioning assembly is used to position the convex rod; The valve control assembly includes a valve stem, a surrounding plate is provided at the communicating hole in the lining cavity, an end cover is fixedly provided at the upper end of the surrounding plate, the valve stem is slidably connected to the end cover along the axial direction of the communicating hole, and a valve disc for controlling the on-off of the communicating hole is provided at one end of the valve stem extending into the surrounding plate; a float rod is hingedly connected to the upper end of the end cover near the side wall of the lining cavity, a float ball is provided at the end of the float rod, a limiting slide groove is provided in the float rod, and a protrusion extending into the limiting slide groove is provided at the upper end of the valve stem; when the float ball moves upward, the float rod drives the valve disc upward to open the communicating hole through the valve stem, and when the float ball moves downward, the float rod drives the valve disc downward to close the communicating hole through the valve stem; The positioning assembly includes a positioning slide, the end of the protruding rod extending into the first arc groove is provided with an end block slidably connected to the first arc groove, the end block is provided with a first slide groove along the radial direction of the spherical lining, the positioning slide is slidably connected to the first slide groove, the end block is fixed with a blocking plate at the opening of the first slide groove, one side of the positioning slide is provided with a pull rod extending out of the blocking plate, and the other side is provided with a positioning rod extending out of the end block, the first arc groove is provided with a plurality of positioning tooth grooves for the positioning rod to extend into at the opening of the second arc groove along the arc direction of the first arc groove, and the first slide groove is provided with a first spring between the positioning slide and the blocking plate for forcing the positioning slide to drive the positioning rod to extend into the positioning tooth groove.

2. The steam trap according to claim 1, wherein: The inner side wall of the spherical cavity is provided with a water inlet groove connected with the water inlet pipe, and the side wall of the spherical liner is provided with a water inlet hole for connecting the water inlet groove and the liner cavity.

3. The steam trap according to claim 2, wherein: The inner side wall of the ball cavity is provided with a water outlet groove connected with the water outlet pipe, and the spherical block is provided with a water outlet hole for connecting the water outlet groove and the first chamber.

4. The steam trap according to claim 3, wherein: A rotation groove connected to the water inlet pipe is provided in the valve body at the water inlet pipe, a first shaft rod is fixedly provided in the rotation groove along the axial direction of the water inlet pipe, a first bevel gear plate located in the rotation groove is rotatably connected to the first shaft rod, two mounting holes are symmetrically provided on the first bevel gear plate, and a filter is provided in each mounting hole; a replacement port connected to the rotation groove is provided on the outside of the valve body, and a cover plate is provided at the replacement port; when one of the mounting holes is coaxial with the water inlet pipe, the other mounting hole is located at a position coaxial with the replacement port.

5. The steam trap according to claim 4, wherein: The outer side of the valve body is rotatably connected with a second shaft rod between the first arc groove and the first bevel gear plate, and the second shaft rod is coaxially fixed with a second bevel gear plate and a third bevel gear plate, and the second bevel gear plate is meshed with the first bevel gear plate; the valve body is provided with a third arc groove at one end of the first arc groove close to the third bevel gear plate along the tangential direction of the third bevel gear plate, and a fourth arc groove for connecting the third arc groove and the ball cavity, the width of the third arc groove is the same as the width of the first arc groove, and the width of the fourth arc groove is the same as the width of the second arc groove; a second sliding groove is provided in the end block, a first slide is provided in the second sliding groove, and a second spring is used to force the first slide plate to move toward the second bevel gear plate, the first slide plate is provided with a first slider extending toward the third bevel gear plate, and the first slider is provided with a ratchet at the end away from the first slide; when the end block slides in the third arc groove, the third bevel gear plate is driven to rotate unidirectionally through the ratchet on the first slider.

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