Steam interception type floating ball drain valve

Abstract

The utility model discloses a steam interception type floating ball drain valve, and belongs to the technical field of drain valves. A steam interception type floating ball drain valve comprises a valve body and further comprises a filter box communicated with the outer surface of the valve body, an inlet pipe communicated with the side face, away from the valve body, of the filter box, the bottom end of the valve body is communicated with an outlet pipe, a filter screen is arranged in the filter box, and a fixing mechanism used for installing the filter screen is arranged on the filter box. A cleaning mechanism for scraping impurities on the filter screen is arranged on the filter box; through the arrangement of the cleaning mechanism, impurities on the surface of the filter screen can be cleaned in time after filtering of the filter screen, the situation that the impurities are accumulated on the surface of the filter screen and block the filter screen is avoided, through the arrangement of the connecting pipe and the sealing plug, the impurities accumulated in the filter box can be taken out, the impurities can be conveniently treated, and the service life of the filter screen is prolonged. And through the arrangement of the fixing mechanism, the filter screen can be detached and is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of steam traps, in particular to a steam-trapping float steam trap. Background Art

[0002] The steam float trap is a trap commonly used in steam systems to remove condensate and air from the system. The general steps for its use are to correctly install the steam float trap in the steam system, usually at the low point of the pipeline or at the location where drainage is required. When a certain amount of condensate and non-condensable gas accumulates in the trap, the float is immersed in the liquid. Because the float is light, it will float up due to buoyancy. When the float floats to a certain height, the rod connected to the float will drive the valve to open, allowing the trap to discharge the accumulated liquid and gas. As the drainage is completed and the condensate and gas are discharged from the system, the pressure inside the trap gradually balances. At this time, the buoyancy of the float decreases, and at the same time, under the action of gravity, the float will gradually sink. When the float sinks to a certain position, the connected rod will close the valve, stop drainage, and maintain the normal operation of the system.

[0003] For example, in Chinese patent application number CN201720782886.9, a new type of free float steam trap is provided, which combines the advantages of other steam traps to form a free float steam trap with simple structure, large drainage volume and noiseless operation. In order to prevent one end of the air discharge pipe from being normally open and causing air leakage, a fully automatic air discharger is provided. When condensate flows into the trap, the air needs to be discharged through the air discharge pipe. At this time, a lot of air will accumulate in the pipe, and pressure will also be generated. At this time, the HM10 pressure sensor automatically opens the air discharge pipe to release air due to the squeeze of the force, thereby effectively realizing the automatic discharge of air.

[0004] However, when this type of steam trap is in use, it is inconvenient to clean the impurities on the filter screen after filtering, which causes the filter screen to be easily blocked, affecting the use effect.

[0005] Therefore, in response to this problem, the utility model provides a steam-trapping float trap. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that it is inconvenient to clean the impurities on the filter screen after filtering, which causes the filter screen to be easily blocked and affects the use effect, and proposes a steam-retaining float trap.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A steam-trapping float trap comprises a valve body, and further comprises: the outer surface of the valve body is connected to a filter box, a side of the filter box away from the valve body is connected to an inlet pipe, the bottom end of the valve body is connected to an outlet pipe, a filter screen is arranged in the filter box, a fixing mechanism for installing the filter screen is arranged on the filter box, and a cleaning mechanism for scraping impurities on the filter screen is arranged on the filter box.

[0009] Preferably, the fixing mechanism comprises a mounting groove opened on the top of the filter box, a mounting frame is embedded and installed in the mounting groove, the filter net is fixed in the mounting frame, and the mounting frame is fixed to the filter box by screws.

[0010] Preferably, the cleaning mechanism comprises two vertical rods fixed in the filter box, a limiting disk is fixed on the outer surface of the vertical rod, a lifting bar is slidably arranged on the outer surface of the vertical rod, and a brush is fixed on a side of the lifting bar close to the filter screen.

[0011] Preferably, the cleaning mechanism further comprises a return spring sleeved on the outer surface of the vertical rod, and two ends of the return spring are respectively fixedly connected to the limit plate and the filter box.

[0012] Preferably, the cleaning mechanism further comprises a rotating rod rotatably connected to the filter box via a bearing, a cam is fixed to the outer surface of the rotating rod, and the cam corresponds to the position of the lifting strip.

[0013] Preferably, the bottom of the filter box is connected to a connecting pipe, and a sealing plug is threadedly connected to the inner surface of the connecting pipe.

[0014] Compared with the prior art, the utility model provides a steam-trapping float trap, which has the following beneficial effects:

[0015] The steam-retaining float trap can clean the impurities on the surface of the filter screen in time after filtering by means of the cleaning mechanism, so as to avoid the accumulation of impurities on the surface of the filter screen and the clogging of the filter screen. The impurities accumulated in the filter box can be taken out by means of the connecting pipe and the sealing plug, so as to facilitate the treatment of the impurities. The filter screen can be disassembled and replaced conveniently by means of the fixing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a steam-trapping float trap proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the fixing mechanism structure of a steam-trapping float trap proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a filter box of a steam-retaining float trap proposed by the utility model;

[0019] Figure 4 The utility model provides a steam-retaining float trap. Figure 3 A schematic diagram of the enlarged structure in the middle.

[0020] In the figure: 1. valve body; 2. filter box; 3. inlet pipe; 4. outlet pipe; 5. filter screen; 6. fixing mechanism; 61. mounting groove; 62. mounting frame; 63. screw; 7. cleaning mechanism; 8. connecting pipe; 9. sealing plug; 71. vertical pole; 72. limit plate; 73. lifting strip; 74. brush; 75. reset spring; 76. rotating rod; 77. cam. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 should not be understood as a limitation on the present invention. Embodiment 1

[0023] Reference Figure 1-Figure 4 A steam-trapping float trap comprises a valve body 1, and further comprises: a filter box 2 is connected to the outer surface of the valve body 1, a side of the filter box 2 away from the valve body 1 is connected to an inlet pipe 3, the bottom end of the valve body 1 is connected to an outlet pipe 4, a filter screen 5 is arranged in the filter box 2, a fixing mechanism 6 for installing the filter screen 5 is arranged on the filter box 2, and a cleaning mechanism 7 for scraping impurities on the filter screen 5 is arranged on the filter box 2.

[0024] Reference Figure 1-Figure 4 The cleaning mechanism 7 includes two vertical rods 71 ​​fixed in the filter box 2, the outer surface of the vertical rod 71 is fixed with a limit plate 72, the outer surface of the vertical rod 71 is slidably provided with a lifting bar 73, and a brush 74 is fixed on one side of the lifting bar 73 close to the filter screen 5.

[0025] Reference Figure 1-Figure 4 The cleaning mechanism 7 further includes a return spring 75 sleeved on the outer surface of the vertical rod 71 , and two ends of the return spring 75 are fixedly connected to the limit plate 72 and the filter box 2 respectively.

[0026] Reference Figure 1-Figure 4The cleaning mechanism 7 also includes a rotating rod 76 rotatably connected to the filter box 2 through a bearing, and a cam 77 is fixed to the outer surface of the rotating rod 76 , and the position of the cam 77 corresponds to the lifting bar 73 .

[0027] Reference Figure 1-Figure 4 The bottom of the filter box 2 is connected with a connecting pipe 8, and the connecting pipe 8 is internally threaded with a sealing plug 9.

[0028] In the utility model, when in use, the valve body 1 is installed in the steam pipeline, a float is arranged in the valve body 1, and steam enters the valve body 1 from the inlet pipe 3 and the filter box 2. When a certain amount of condensed water and non-condensable gas accumulate in the valve body 1, the float is immersed in the liquid, and the float will float up under the buoyancy of the water. When the float floats to a certain height, the rod connected to the float will drive the valve to open. This is the prior art, so it will not be described in detail here, so that the accumulated liquid and gas are discharged from the outlet pipe 4. When the steam enters the valve body 1 through the filter box 2, since a filter screen 5 with a retention function is installed in the filter box 2, the impurities or particulate matter in the steam can be retained and filtered through the filter screen 5, avoiding the impurities or particulate matter from being trapped. When the cam 77 is rotated to contact with the bottom of the lifting bar 73, the lifting bar 73 will be driven to slide upward on the outer surface of the vertical rod 71, and the reset spring 75 will be squeezed to make the brush 74 move upward on the outer surface of the filter screen 5. The impurities on the filter screen 5 can be scraped off by the movement of the brush 74 to prevent the impurities from clogging the filter screen 5. When the cam 77 is rotated to not be released from the lifting bar 73, the elastic force of the reset spring 75 will reset the lifting bar 73, and the impurities can be discharged by twisting the sealing plug 9 into the connecting pipe 8, so as to facilitate the treatment of the impurities. Embodiment 2

[0029] Reference Figure 1-Figure 4 The fixing mechanism 6 includes a mounting groove 61 opened on the top of the filter box 2, a mounting frame 62 is embedded in the mounting groove 61, the filter screen 5 is fixed in the mounting frame 62, and the mounting frame 62 is fixed to the filter box 2 by screws 63.

[0030] In the utility model, when the filter screen 5 needs to be replaced, the user screws the screw 63 to separate the installation frame 62 from the filter box 2, slides the installation frame 62 upward in the installation groove 61, takes out the installation frame 62 and the filter screen 5 and replaces them together, and the installation groove 61 and the installation frame 62 are sealed.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steam trap type float ball steam trap, comprising a valve body (1), characterized in that: Also includes: The outer surface of the valve body (1) is connected to a filter box (2); a side of the filter box (2) away from the valve body (1) is connected to an inlet pipe (3); the bottom end of the valve body (1) is connected to an outlet pipe (4); a filter screen (5) is arranged inside the filter box (2); a fixing mechanism (6) for mounting the filter screen (5) is arranged on the filter box (2); and a cleaning mechanism (7) for scraping impurities on the filter screen (5) is arranged on the filter box (2).

2. A steam trap according to claim 1, characterized in that: The fixing mechanism (6) comprises a mounting groove (61) formed on the top of the filter box (2), a mounting frame (62) being embedded and mounted in the mounting groove (61), the filter screen (5) being fixed in the mounting frame (62), and the mounting frame (62) being fixed to the filter box (2) by means of screws (63).

3. A steam trap type float trap according to claim 1, characterized in that: The cleaning mechanism (7) comprises two vertical rods (71) fixed in the filter box (2), a limiting disk (72) being fixed on the outer surface of the vertical rod (71), a lifting bar (73) sliding on the outer surface of the vertical rod (71), and a brush (74) being fixed on a side of the lifting bar (73) close to the filter screen (5).

4. A steam trap type float trap according to claim 3, characterized in that: The cleaning mechanism (7) further comprises a return spring (75) sleeved on the outer surface of the upright rod (71), and two ends of the return spring (75) are respectively fixedly connected to the limit plate (72) and the filter box (2).

5. The steam trap type float trap according to claim 3, characterized in that: The cleaning mechanism (7) further comprises a rotating rod (76) rotatably connected to the filter box (2) via a bearing, a cam (77) being fixed to the outer surface of the rotating rod (76), and the position of the cam (77) corresponds to that of the lifting bar (73).

6. The steam trap type float trap according to claim 1, characterized in that: The bottom of the filter box (2) is connected to a connecting pipe (8), and the connecting pipe (8) is internally threadedly connected to a sealing plug (9).

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