Single-line double-control pneumatic drain valve

Abstract

The single-line double-control pneumatic drain valve comprises a main body shell, a valve seat, a buoy, a valve plate and a semi-drainage floater frame, a pneumatic frame is arranged on one side of the main body shell, a pneumatic structure for lifting the semi-drainage floater frame is arranged in the pneumatic frame, a control floating block is rotationally connected to the semi-drainage floater frame, a pedal is arranged on the outer side of the buoy, and a control groove is formed in the pneumatic frame; when the control floating block is not subjected to buoyancy or the control rod is located in the middle of the control groove, the control floating block abuts against the pedal, the semi-drainage floater frame and the buoy fall synchronously, and when the control floating block is subjected to buoyancy and the control rod is located at the upper end and the lower end of the control groove, the control floating block does not abut against the pedal. The semi-drainage floater frame and the float bowl respectively and independently fall down; by controlling rotation of the floating block, semi-drainage and full-drainage of the single-line control drainage valve are achieved, the overall structure is simple, the size is small, molding preparation is facilitated, and the production cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of drain valves, in particular to a single-line double-control pneumatic drain valve. Background Art

[0002] In order to save water resources, existing bathroom drain valves all adopt two drainage modes: half-drain and full-drain. In the full-drain mode, the drainage time is long and the drainage volume is large, and most of the water in the water tank can be discharged. In the half-drain mode, the drainage time is short and the drainage volume is small, and only part of the water in the water tank can be discharged, thus achieving the effect of saving water.

[0003] Patent application No. CN202320816723.3 discloses an adjustable drain valve, including a main body, a valve seat and a valve plate. The main body includes a main body shell, a full-row float, a half-row float, a full-row pull rod and a half-row pull rod, including a flow adjustment ring. The valve seat includes an outlet pipe port and a support ring arranged above the outlet pipe port. The outlet pipe port and the support ring are connected by a support column. A water inlet communicating with the outlet pipe port is formed between the outlet pipe port and the support ring. The lower end of the main body is inserted into the support ring. The flow adjustment ring is height-adjustable and sleeved outside the valve seat. The flow adjustment ring has two states: covering part of the water inlet and not covering the water inlet, thereby realizing flexible adjustment of the drainage volume of the full-drain and half-drain modes and enhancing the flexibility of water flow control.

[0004] Patent application number CN202122325207.4 discloses a single-discharge adjustable drain valve, comprising a main body, a valve seat relatively fixedly arranged at the bottom of the main body, a valve plate capable of lifting upward and opening is arranged in the valve seat, a full-row float capable of synchronously lifting the valve body upward is arranged inside the main body, a half-row float fixing frame capable of relatively sliding in the vertical direction is arranged outside the full-row float, a water level line buoy capable of adjusting the relative height is arranged outside the half-row float fixing frame, and a limit block is arranged on the surface of the full-row float, and the limit block can limit the maximum relative displacement of the full-row float and the half-row float fixing frame to not exceed a set value. By arranging a half-row float fixing frame outside the full-row float, and arranging a height-adjustable water level line buoy on the half-row float fixing frame, the height difference between the water level line buoy and the full-row float in the initial state can be changed, that is, the water outlet speed of the water level line buoy when draining in the half-row mode is changed, thereby adjusting the valve plate opening time, and then adjusting the single-discharge volume, thereby achieving the effect of saving water.

[0005] Although half-drain and full-drain functions can be achieved in existing drain valves, both the full-drain pull rod and the half-drain pull rod need to be controlled by double-line, which has a cumbersome structure, increases the occupied volume of the overall structure, and increases the production cost. Therefore, the present application proposes a single-line dual-control pneumatic drain valve to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a single-line double-control pneumatic drain valve.

[0007] In order to solve the above technical problems, the present invention comprises a main body shell and a valve seat, wherein the main body shell is coaxial with the valve seat and fixedly connected, a float is coaxially passed through the main body shell, a valve plate lifted by the float is arranged in the valve seat, a half-row float frame capable of relative sliding in a vertical direction is arranged on the outside of the float, and a limit block is arranged on the upper side of the half-row float frame on the outside of the float,

[0008] A pneumatic frame is provided on one side of the main body shell, and a pneumatic structure for lifting a half-row float frame is provided inside the pneumatic frame. A control float block is rotatably connected to the half-row float frame, and a pedal is provided on the outer side of the float. The pneumatic frame is provided with a control groove, and a control rod is provided on the control float block. When the control float block is not subjected to buoyancy or the control rod is located in the middle of the control groove, the control float block abuts against the pedal, and the half-row float frame and the float fall synchronously. When the control float block is subjected to buoyancy and the control rod is located at the upper and lower ends of the control groove, the control float block does not abut against the pedal, and the half-row float frame and the float fall separately and independently.

[0009] Preferably, the control groove comprises a narrow groove in the middle, and the upper and lower ends of the narrow groove are respectively provided with connected wide grooves, and one side wall of the narrow groove is flush with the wide groove, and the other side wall is smoothly butted.

[0010] Preferably, a sealing cover is provided on the pneumatic frame, the sealing cover is snap-fitted with the upper opening of the main shell, and a through groove is provided in the middle of the sealing cover for the float to slide through.

[0011] Preferably, the pneumatic structure includes an airbag seat, a cylindrical airbag, a top tube and a top plate, the cylindrical airbag is installed on the airbag seat, the airbag seat is provided with an inflation hole, the top tube is slidably connected to the pneumatic frame and the cylindrical airbag is arranged in the top tube, the cylindrical airbag is inflated to lift the top tube, the top plate is located above the top tube and the top plate is clamped with the side of the half row of float frames.

[0012] Preferably, the upper side surface of the half-row float frame is provided with a buckle groove and a first elastic clamping groove, and the lower end surface of one end of the top plate is provided with a buckle block and a first clamping shaft. After the buckle block is buckled with the buckle groove, the first buckle is snapped into the first elastic clamping groove.

[0013] Preferably, a second elastic slot is provided on the side of the half-row float frame, and a second clamping shaft is provided on the upper end of the control float block. The second clamping shaft is inserted into the second elastic slot, and the second clamping shaft can rotate around the second elastic slot.

[0014] Preferably, a floating shell located inside the main body shell is provided outside the buoy, and the inner wall of the floating shell is provided with circumferentially distributed support plates, the support plates abut against the outer wall of the buoy, and the upper end of the floating shell is sealed and the lower end is open.

[0015] Preferably, the floating shell is slidably connected to the upper end of the buoy and circumferentially limited, and the upper end of the floating shell is connected to the main shell through an elastic member, and a limiter is provided at the lower end of the floating shell, and the limiter can be moved and adjusted along the axial direction of the buoy.

[0016] Preferably, the elastic member is one of a spring, an elastic bellows or an airbag.

[0017] Preferably, the limiting member is a threaded ring, the threaded ring is threadably connected to the buoy, and the threaded ring abuts against a support plate in the buoyancy shell.

[0018] The beneficial effects of the present invention are as follows: the present invention lifts a half-row float frame through a pneumatic structure, and synchronously drives the control float block to move. When the control rod on the control float block rises to the middle position of the control groove, the control float block abuts against the pedal, and the float and the half-row float frame descend synchronously to perform a half-row. When the control rod on the control float block rises to the upper end of the control groove, the float block is controlled to rotate under the action of buoyancy, and the control float block does not abut against the pedal, and the half-row float frame descends before the float, and the falling time of the float is increased to perform a full-row. The present invention realizes half-row and full-row of a single-line control drain valve by controlling the rotation of the float block. The overall structure is simple, the volume is small, it is easy to mold and prepare, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the overall structure of the present invention being fully disassembled;

[0022] Figure 4 It is a schematic diagram of the internal structure of the main body shell in the present invention;

[0023] Figure 5 It is a three-dimensional schematic diagram of the buoy structure in the present invention;

[0024] Figure 6 It is a three-dimensional schematic diagram of the pneumatic frame in the present invention;

[0025] Figure 7 It is a schematic plan view of the overall structure of the present invention;

[0026] Figure 8 for Figure 7 Schematic diagram of the AA section;

[0027] Fig. 9 It is a schematic diagram of the connection and separation of a half-row float frame, a control float block and a top plate in the present invention;

[0028] Fig.10 for Fig. 9 Schematic diagram from another perspective;

[0029] Fig.11 It is a schematic diagram of the relative positions of the control rod and the control groove when the drain valve in the present invention is stationary;

[0030] Fig.12 It is a schematic diagram of the relative positions of the control rod and the control groove when the drain valve of the present invention is half-drained;

[0031] Fig.13 It is a schematic diagram of the relative positions of the control rod and the control groove when the drain valve in the present invention is fully drained.

[0032] In the figure: 1. main body shell; 2. valve seat; 3. buoy; 4. valve plate; 5. half-row float frame; 6. water level buoy; 7. limit block; 8. pneumatic frame; 9. pneumatic structure; 91. airbag seat; 92. cylindrical airbag; 93. top tube; 94. top plate; 95. inflation hole; 10. control float; 11. pedal; 12. control groove; 121. narrow groove; 122. wide groove; 13. control rod; 14. cover; 15. through groove; 16. limit strip; 17. buckle groove; 18. first elastic card groove; 19. buckle block; 20. first card shaft; 21. second elastic card groove; 22. second card shaft; 23. floating shell; 24. support plate; 25. elastic member; 26. limit member. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. All directional indications in the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] like Figure 1-13As shown, this embodiment provides a single-line dual-control pneumatic drain valve, including a main body shell 1 and a valve seat 2. The main body shell 1 is coaxial with the valve seat 2. The column heads on both sides of the lower end of the main body shell 1 are clamped with the upper end of the valve seat 2 to fix the main body shell 1 and the valve seat 2 together. A float 3 is coaxially passed through the main body shell 1. A valve plate 4 for opening and closing the valve port is provided in the valve seat 2. The lower end of the float 3 is fixedly connected to the valve plate 4. The float 3 is used to lift the valve plate 4, thereby opening the valve port on the valve seat 2. The float 3 is slidably connected to the main body shell 1 and the float 3 is relatively close to the main body shell 1. The outer shell 1 is limited circumferentially, and a half-row float frame 5 that can slide relatively in the vertical direction is arranged on the outside of the buoy 3. A water level buoy 6 that can be adjusted along the axial direction is arranged on the side of the half-row float frame 5. The adjustment method is the same as that of the prior art solution and is not described further here. A limit block 7 is located on the upper side of the half-row float frame 5 on the outer side of the buoy 3. The limit block 7 is arranged on the upper side of the half-row float frame 5. When the half-row float frame 5 is lifted upward, the half-row float frame 5 abuts against the limit block 7, thereby lifting the buoy 3 and opening the valve port on the valve seat 2.

[0035] like Figure 1-Figure 3 , Figure 6 , Figure 11-13As shown, a pneumatic frame 8 is provided on one side of the main shell 1, and a pneumatic structure 9 for lifting a half-row float frame 5 is provided inside the pneumatic frame 8. A control float block 10 is rotatably connected to the half-row float frame 5, and the control float block 10 is a bent structure. A pedal 11 is provided on the outer side of the float 3, and a control groove 12 is provided on the pneumatic frame 8. Specifically, the control groove 12 includes a narrow groove 121 in the middle, and the upper and lower ends of the narrow groove 121 are respectively provided with a connected wide groove 122, and the narrow groove 121 and the wide groove 1 One side wall of 22 is flush, and the other side wall is smoothly connected. A control rod 13 is provided on the control float 10. When the control float 10 is not subjected to buoyancy or the control rod 13 is located in the middle of the control groove 12, the control float 10 abuts against the pedal 11, and the half-row float frame 5 and the buoy 3 fall synchronously. When the control float 10 is subjected to buoyancy and the control rod 13 is located at the upper and lower ends of the control groove 12, the control float 10 does not abut against the pedal 11, and the half-row float frame 5 and the buoy 3 fall separately and independently. In this example, when the water level rises to the center of the control rod 13, the control float 10 rotates in the direction away from the buoy 3 under the action of buoyancy, so that the control float 10 does not abut against the pedal 11. When lifting, the control rod 13 on the control float 10 moves to the wide groove 122 at the upper end of the control groove 12. Under the action of buoyancy, the control float 10 does not abut against the pedal 11, and the half-row float frame 5 can fall before the buoy 3. The buoy 3 falls more slowly, so that the valve port on the valve seat 2 is open for a longer time, thereby achieving full discharge. When the control rod 13 moves to the narrow groove 121, or the water level is lower than the center of the control rod 13, the control float 10 is rotated toward the buoy 3, and the lower end of the control float 10 is abutted against the pedal 11. When descending, the control float 10 abuts against the pedal 11, so that the half-row float frame 5 and the buoy 3 descend synchronously, and the descending speed is accelerated, so that the valve port on the valve seat 2 opens more slowly, thereby realizing half-row. When the horizontal plane is lower than the center position of the control rod 13, the control float 10 always abuts against the pedal 11, realizing the half-row function and reducing the water discharge.

[0036] like Figure 5 , 6 As shown, a cover 14 is provided on the pneumatic frame 8, and the cover 14 is snap-fitted with the upper opening of the main shell 1. A through groove 15 is provided in the middle of the cover 14 for the float 3 to slide through. The cover 14 is used to seal the upper end of the main shell 1. A limit strip 16 is provided on the side wall of the float 3. The limit strip 16 is used to limit the rotation of the float 3 around the cover 14, and at the same time fix the pneumatic frame 8 and the main shell 1 together.

[0037] like Figure 3As shown, the pneumatic structure 9 includes an airbag seat 91, a cylindrical airbag 92, a top tube 93 and a top plate 94. The cylindrical airbag 92 is installed on the airbag seat 91. The airbag seat 91 is provided with an inflation hole 95. The top tube 93 is slidably connected to the pneumatic frame 8 and the cylindrical airbag 92 is arranged in the top tube 93. The cylindrical airbag 92 inflates to lift the top tube 93. The top plate 94 is located above the top tube 93 and the top plate 94 is clamped with the side of the half-row float frame 5. The inflation hole 95 is used to connect with the air pump. The air pump has two gears. One gear is used to inflate the cylindrical airbag 92. The cylindrical airbag 92 lifts the top tube 93 and the top plate 94, thereby moving the control rod 13 on the control float 10 to the narrow groove 121 position; the other gear is used to move the control rod 13 on the control float 10 from the wide groove 122 at the lower end to the wide groove 122 at the upper end.

[0038] like Fig. 9 , Fig.10 As shown, the upper end side buckle groove 17 and the first elastic clamping groove 18 of the half-row float frame 5, the lower end surface of one end of the top plate 94 is provided with a buckle block 19 and a first clamping shaft 20. After the buckle block 19 is buckled with the buckle groove 17, the first clamping shaft 20 is snapped into the first elastic clamping groove 18, which is used to fix the half-row float frame 5 and the top plate 94 together, and is convenient for disassembly. At the same time, a second elastic clamping groove 21 is provided on the side of the half-row float frame 5, and a second clamping shaft 22 is provided on the upper end of the control float block 10. The second clamping shaft 22 is snapped into the second elastic clamping groove 21, and the second clamping shaft 22 can rotate around the second elastic clamping groove 21, which is convenient for controlling the float block 10 to be connected with the half-row float frame 5 and realize rotation.

[0039] like Figure 3 , Figure 4 As shown, a buoy shell 23 located inside the main shell 1 is provided on the outside of the buoy 3, and a circumferentially distributed support plate 24 is provided on the inner wall of the buoy 23, and the support plate 24 abuts against the outer wall of the buoy 3. The upper end of the buoy shell 23 is sealed and the lower end is open, and the buoy shell 23 acts as a float to slow down the falling time of the buoy 3.

[0040] like Figure 4 , Figure 8As shown, the floating shell 23 is slidably connected to the upper end of the buoy 3 and is circumferentially limited, and the upper end of the floating shell 23 is connected to the main shell 1 through an elastic member 25, and the elastic member 25 can also be connected to the cover 14 of the pneumatic frame 8. The lower end of the floating shell 23 is provided with a limiter 26, and the limiter 26 can be moved and adjusted along the axial direction of the buoy 3. The elastic member 25 is one of a spring, an elastic bellows or an airbag. In this example, the elastic member 25 is a spring. When the valve plate 4 is fitted with the valve seat 2, the spring is in a compressed and normal state. The limiter 26 is a threaded ring. The threaded ring is threadedly connected to the buoy 3, and the threaded ring abuts against the support plate 24 in the float shell 23. The threaded ring moves axially on the buoy 3, driving the float shell 23 to move axially along the buoy 3 and compressing the spring. The threaded ring can be replaced with other limiting structures, such as an elastic ring, a pin rod cooperating with the pin hole on the buoy 3, etc., so as to achieve the movement and adjustment on the buoy 3 and support the buoy shell 23. When the buoy 3 falls, the spring can exert elastic force to speed up the falling time of the buoy 3, thereby adjusting the drainage volume to adapt to toilet water tanks of different capacities.

[0041] The working principle is as follows: the half-row float frame 5 is lifted by the pneumatic structure 9, and the control float block 10 is driven to move synchronously. When the control rod 13 on the control float block 10 rises to the middle position of the control groove 12, the control float block 10 abuts against the pedal 11, and the buoy 3 and the half-row float frame 5 are synchronously lowered to perform a half-row. When the control rod 13 on the control float block 10 rises to the upper end of the control groove 12, the buoyancy is used to control the float block 10 to rotate, and the control float block 10 does not abut against the pedal 11. The half-row float frame 5 descends before the buoy 3, and the falling time of the buoy 3 is increased to perform a full-row. By controlling the rotation of the float block 10, the half-row and full-row of the single-line control drain valve can be realized. The overall structure is simple, the volume is small, it is easy to mold and prepare, and the production cost is low.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-line dual-control pneumatic drain valve, comprising a main body shell and a valve seat, wherein the main body shell is coaxial with the valve seat and fixedly connected, a float is coaxially passed through the main body shell, a valve plate lifted by the float is arranged in the valve seat, a half-row float frame capable of relative sliding in a vertical direction is arranged on the outside of the float, and a limit block on the upper side of the half-row float frame is arranged on the outside of the float, characterized in that: A pneumatic frame is provided on one side of the main body shell, and a pneumatic structure for lifting a half-row float frame is provided inside the pneumatic frame. A control float block is rotatably connected to the half-row float frame, and a pedal is provided on the outer side of the float. The pneumatic frame is provided with a control groove, and a control rod is provided on the control float block. When the control float block is not subjected to buoyancy or the control rod is located in the middle of the control groove, the control float block abuts against the pedal, and the half-row float frame and the float fall synchronously. When the control float block is subjected to buoyancy and the control rod is located at the upper and lower ends of the control groove, the control float block does not abut against the pedal, and the half-row float frame and the float fall separately and independently.

2. The single-line dual-control pneumatic drain valve according to claim 1, characterized in that: The control groove comprises a narrow groove in the middle, and the upper and lower ends of the narrow groove are respectively provided with connected wide grooves. The narrow groove is flush with one side wall of the wide groove, and the other side wall is smoothly butted.

3. The single-line dual-control pneumatic drain valve according to claim 1, characterized in that: The pneumatic frame is provided with a cover, which is clamped with the upper opening of the main body shell, and the middle of the cover is provided with a through groove through which the float slides.

4. The single-line dual-control pneumatic drain valve according to claim 1, characterized in that: The pneumatic structure includes an airbag seat, a cylindrical airbag, a top tube and a top plate. The cylindrical airbag is installed on the airbag seat. The airbag seat is provided with an inflation hole. The top tube is slidably connected to the pneumatic frame and the cylindrical airbag is arranged in the top tube. The cylindrical airbag is inflated to lift the top tube. The top plate is located above the top tube and is clamped with the side of the half-row float frame.

5. The single-line dual-control pneumatic drain valve according to claim 4, characterized in that: The upper side surface of the half-row float frame is provided with a buckle groove and a first elastic clamping groove, and the lower end surface of one end of the top plate is provided with a buckle block and a first clamping shaft. After the buckle block is buckled with the buckle groove, the first buckle is clamped into the first elastic clamping groove.

6. The single-line dual-control pneumatic drain valve according to claim 5, characterized in that: A second elastic slot is provided on the side of the half-row float frame, and a second clamping shaft is provided on the upper end of the control float block. The second clamping shaft is clamped into the second elastic slot, and the second clamping shaft can rotate around the second elastic slot.

7. The single-line dual-control pneumatic drain valve according to claim 1, characterized in that: A floating shell located inside the main body shell is arranged outside the buoy, and a circumferentially distributed support plate is arranged on the inner wall of the buoy. The support plate abuts against the outer wall of the buoy, and the upper end of the buoy is sealed and the lower end is open.

8. The single-line dual-control pneumatic drain valve according to claim 7, characterized in that: The floating shell is slidably connected to the upper end of the buoy and is circumferentially limited, and the upper end of the floating shell is connected to the main shell through an elastic member. The lower end of the floating shell is provided with a limiter, and the limiter can be moved and adjusted along the axial direction of the buoy.

9. The single-line dual-control pneumatic drain valve according to claim 8, characterized in that: The elastic member is one of a spring, an elastic bellows or an air bag.

10. The single-line dual-control pneumatic drain valve according to claim 8, characterized in that: The limiting member is a threaded ring, the threaded ring is threadedly connected to the buoy, and the threaded ring abuts against a support plate in the floating shell.

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