A double-sealed valve

Abstract

The utility model relates to the technical field of valves, and discloses a double-sealed valve, including a bottom tube and a side tube, side tubes are fixed on the left and right sides of the outside of the bottom tube, a lower flange is fixed on the top of the bottom tube, and an upper flange is installed on the top of the lower flange, a shell is fixed at the center of the top of the upper flange, and a connecting shaft is movably assembled between the shell and the bottom tube. The double-sealed valve has annular airbags fixed around the edges of both sides of the valve core, and the valve core is guided to rotate in the bottom tube by twisting the handle above the connecting shaft, and then the rotation angle of the valve core is adjusted, which can reduce or increase the flow rate and completely block the flow of liquid. After the outer wall of the valve core is completely fitted with the inner wall of the bottom tube, the air pump is started to input gas to the three-way pipe above the valve core through the connected pipeline, forcing the annular airbag to expand and block the gap, thereby solving the problem of poor sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a double-sealed valve. Background Art

[0002] A valve is a control component commonly found on pipelines. It has a valve core inside that controls the flow of liquid inside the pipeline. When the valve core is closed, it can block the flow of materials in and out. When the valve core is open, it allows the material to continue to flow. The position of the valve core is adjusted by the handle on the top.

[0003] If there is too much friction and damage between the inner wall of the pipe and the valve core, the liquid will still flow out from the gap. The existence of the valve can help the pipeline to intercept materials, but the valve loses its ability to close at this time, and liquid will remain intermittently during use, which is quite inconvenient.

[0004] Now, a novel double-sealed valve is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a double-sealed valve to solve the problem of poor sealing effect in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-sealed valve, comprising a bottom tube and a side tube, side tubes are fixed on the left and right sides of the outside of the bottom tube, a lower flange is fixed on the top of the bottom tube, and an upper flange is installed on the top of the lower flange, a shell is fixed at the center of the top of the upper flange, and a connecting shaft is movably assembled between the shell and the bottom tube, a rotating handle is fixed on the top of the connecting shaft, a valve core is fixed on the bottom of the connecting shaft, and annular air bags are fixed around the two side edges of the valve core, a three-way pipe is installed on the top of the annular air bag, and an air pump is fixed on the lower left of the shell.

[0007] Preferably, both sides of the three-way pipe are embedded in an annular airbag, and the annular airbag is symmetrically fixed on both sides of the valve core.

[0008] Preferably, the output end of the air pump is fixedly connected to the center of the connecting shaft through a hose, and the air pump extracts or discharges the gas inside the annular airbag.

[0009] Preferably, cylindrical grooves are longitudinally provided on both sides of the shell, and a thin rod is fixed at the bottom of the cylindrical groove, a pin is sleeved on the outside of the thin rod, a spring is fixed between the bottom of the pin and the cylindrical groove, a limiting groove is provided at the inner bottom end of the pin, holes are provided on both sides and front and back of the handle, and a cross piece is transversely fixed above the pins.

[0010] Preferably, the latch pin is embedded in the insertion hole, and the top of the thin rod is embedded in the limiting groove.

[0011] Preferably, the spring is arranged between the latch and the cylindrical groove, and the latch can slide up and down along the inner wall of the insertion hole.

[0012] Preferably, a pipe opening is fixed around the outer side of the side tube, and a frame is inserted in the side tube, a mesh is longitudinally fixed on the inner side of the frame, a lap ring is fixed on the outside of the frame, and screw holes are provided inside the upper and lower parts of the lap ring, and bolts are engaged and connected in the screw holes.

[0013] Preferably, the bolt can lock the lap ring and the pipe opening, and the frame can slide along the inner wall of the side tube.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the double-sealed valve not only strengthens the sealing effect of the valve and prevents the valve from moving, but also isolates dirt;

[0015] (1) An annular air bag is fixed around the edges of both sides of the valve core. The valve core is guided to rotate in the bottom tube by turning the rotary handle above the connecting shaft, and then the rotation angle of the valve core is adjusted to reduce or increase the flow rate, or completely block the flow of the liquid. After the outer wall of the valve core is completely attached to the inner wall of the bottom tube, the air pump is started to input gas to the three-way pipe above the valve core through the connected pipeline, and the gas enters the annular air bag as filling, forcing the annular air bag to expand and block the gap;

[0016] (2) By longitudinally providing cylindrical grooves on both sides of the shell, longitudinal sockets are provided on the front, back, left and right sides of the rotary handle. Before using the rotary handle to rotate the connecting shaft, it is necessary to press the horizontal piece downward to guide the pin connected to the horizontal piece to slide along the thin rod. After the rotary handle is rotated, the horizontal piece is released. After the spring is reset, the pin will be lifted up and inserted into the socket for fixation, thereby limiting the angle of the rotary handle after rotation;

[0017] (3) By inserting a frame into the side tube, the frame with the gauze is pre-inserted into the side tube, and then the two bolts in the lap ring are turned. After the bolts are screwed into the screw holes, the pipe mouth and the lap ring can be locked to prevent the frame and the gauze from sliding and affecting the dirt retention capacity inside the side tube. A filtering structure is formed on both sides of the bottom tube to screen out foreign particles. The size of the gauze holes on both sides of the structure can also be changed according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the front cross-sectional structure of the housing of the utility model;

[0021] Figure 4 It is a schematic diagram of the front cross-sectional structure of the side tube of the utility model.

[0022] In the figure: 1. bottom tube; 2. valve core; 3. annular air bag; 4. side tube; 5. pipe mouth; 6. lap ring; 7. bolt; 8. screw hole; 9. frame; 10. lower flange; 11. upper flange; 12. shell; 13. cross piece; 14. handle; 15. connecting shaft; 16. latch; 17. socket; 18. cylindrical groove; 19. limit groove; 20. spring; 21. air pump; 22. mesh; 23. three-way pipe; 24. thin rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4 A double-sealed valve comprises a bottom tube 1 and a side tube 4. The side tubes 4 are fixed to the left and right sides of the outside of the bottom tube 1. A lower flange 10 is fixed to the top of the bottom tube 1, and an upper flange 11 is installed on the top of the lower flange 10. A shell 12 is fixed at the center of the top of the upper flange 11, and a connecting shaft 15 is movably assembled between the shell 12 and the bottom tube 1. A rotary handle 14 is fixed above the connecting shaft 15. A valve core 2 is fixed to the bottom of the connecting shaft 15, and an annular air bag 3 is fixed around the edges of both sides of the valve core 2. A three-way pipe 23 is installed on the top of the annular air bag 3. An air pump 21 is fixed to the lower left of the shell 12;

[0025] Both sides of the three-way pipe 23 are embedded in the annular airbag 3, and the annular airbag 3 is symmetrically fixed on both sides of the valve core 2. The output end of the air pump 21 is fixedly connected to the center of the connecting shaft 15 through a hose, and the air pump 21 extracts or discharges the gas inside the annular airbag 3;

[0026] Specifically, Figure 1 and Figure 2As shown, the valve core 2 is guided to rotate in the bottom tube 1 by twisting the handle 14 above the connecting shaft 15, and then the rotation angle of the valve core 2 is adjusted to reduce or increase the flow rate, and also to completely block the flow of the liquid. After the outer wall of the valve core 2 is completely fitted with the inner wall of the bottom tube 1, the air pump 21 is started to input gas to the three-way pipe 23 above the valve core 2 through the connected pipeline, and the gas is allowed to enter the annular airbag 3 as filling, forcing the annular airbag 3 to expand, and then seal and cover the gap between the valve core 2 and the bottom tube 1, forming a double sealing structure.

[0027] Embodiment 2: Both sides of the housing 12 are longitudinally provided with cylindrical grooves 18, and a thin rod 24 is fixed at the bottom of the cylindrical groove 18, and a latch 16 is sleeved on the outside of the thin rod 24, and a spring 20 is fixed between the bottom of the latch 16 and the cylindrical groove 18, and a limit groove 19 is provided at the bottom end of the latch 16, and both sides and the front and rear of the handle 14 are provided with insertion holes 17, and a horizontal piece 13 is transversely fixed above the latch 16;

[0028] The latch 16 is embedded in the insertion hole 17, the top of the thin rod 24 is embedded in the limiting groove 19, and the spring 20 is arranged between the latch 16 and the cylindrical groove 18, so that the latch 16 can slide up and down along the inner wall of the insertion hole 17;

[0029] Specifically, Figure 1 and Figure 3 As shown, longitudinal sockets 17 are provided on the front, back, left and right sides of the rotary handle 14. Before using the rotary handle 14 to rotate the connecting shaft 15, it is necessary to press the cross piece 13 downward to guide the latch 16 connected to the cross piece 13 to slide along the thin rod 24. After the rotary handle 14 is rotated, the cross piece 13 is released. After the spring 20 is reset, the latch 16 will be lifted up and inserted into the socket 17 for fixation, so that the rotary handle 14 can be prevented from continuing to rotate.

[0030] Embodiment 3: A pipe opening 5 is fixed around the outer side of the side tube 4, and a frame 9 is inserted in the side tube 4. A gauze 22 is longitudinally fixed on the inner side of the frame 9. A lap ring 6 is fixed on the outside of the frame 9, and screw holes 8 are provided inside the upper and lower parts of the lap ring 6. Bolts 7 are meshed and connected in the screw holes 8. The bolts 7 can lock the lap ring 6 and the pipe opening 5, and the frame 9 can slide along the inner wall of the side tube 4;

[0031] Specifically, Figure 1 and Figure 4 As shown, the frame 9 with the gauze 22 is pre-inserted into the side tube 4, and then the two bolts 7 in the lap ring 6 are screwed. After the bolts 7 are screwed into the screw holes 8, the pipe mouth 5 and the lap ring 6 can be locked to prevent the frame 9 and the gauze 22 from sliding and affecting the dirt retention ability inside the side tube 4, and a filtering structure is formed on both sides of the bottom tube 1 to screen out foreign particles.

[0032] Working principle: When the utility model is used, firstly, the frame body 9 with the gauze 22 is pre-inserted into the side tube 4, and then the two bolts 7 in the lap ring 6 are screwed, and after the bolts 7 are screwed into the screw holes 8, the pipe mouth 5 and the lap ring 6 can be locked to prevent the frame body 9 and the gauze 22 from sliding and affecting the dirt interception ability inside the side tube 4. Then, the valve core 2 is guided to rotate in the bottom tube 1 by screwing the handle 14 above the connecting shaft 15, and then the rotation angle of the valve core 2 is adjusted to reduce or increase the flow rate, and also completely block the flow of the liquid. After the outer wall of the valve core 2 is completely fitted with the inner wall of the bottom tube 1, the air pump 21 is started to connect The pipeline inputs gas to the three-way pipe 23 above the valve core 2, and allows the gas to enter the annular airbag 3 as filling, forcing the annular airbag 3 to expand, and then seal and cover the gap between the valve core 2 and the bottom tube 1. The front, back, left and right sides of the rotary handle 14 are provided with longitudinal sockets 17. Before using the rotary handle 14 to rotate the connecting shaft 15, it is necessary to press the cross piece 13 downward to guide the pin 16 connected to the cross piece 13 to slide along the thin rod 24. After the rotary handle 14 is rotated, the cross piece 13 is released. After the spring 20 is reset, the pin 16 will be lifted up and inserted into the socket 17 for fixation, thereby limiting the position of the rotary handle 14.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A double-sealed valve, comprising a bottom pipe (1) and a side pipe (4), characterized in that: Side tubes (4) are fixed on both left and right sides of the outside of the bottom tube (1), a lower flange (10) is fixed on the top of the bottom tube (1), and an upper flange (11) is installed on the top of the lower flange (10), a shell (12) is fixed at the center of the top of the upper flange (11), and a connecting shaft (15) is movably assembled between the shell (12) and the bottom tube (1), a rotating handle (14) is fixed on the top of the connecting shaft (15), a valve core (2) is fixed on the bottom of the connecting shaft (15), and an annular air bag (3) is fixed around the edges of both sides of the valve core (2), a three-way pipe (23) is installed on the top of the annular air bag (3), and an air pump (21) is fixed on the lower left of the shell (12).

2. A double-sealed valve according to claim 1, characterized in that: Both sides of the three-way pipe (23) are embedded in the annular airbag (3), and the annular airbag (3) is symmetrically fixed on both sides of the valve core (2).

3. A double-sealed valve according to claim 1, characterized in that: The output end of the air pump (21) is fixedly connected to the center of the connecting shaft (15) through a hose, and the air pump (21) extracts or discharges the gas inside the annular airbag (3).

4. A double-sealed valve according to claim 1, characterized in that: Both sides of the shell (12) are longitudinally provided with cylindrical grooves (18), and a thin rod (24) is fixed below the cylindrical groove (18), a latch (16) is sleeved on the outside of the thin rod (24), a spring (20) is fixed between the bottom of the latch (16) and the cylindrical groove (18), a limiting groove (19) is provided at the bottom end of the latch (16), both sides and front and back of the handle (14) are provided with insertion holes (17), and a transverse sheet (13) is transversely fixed above the latch (16).

5. A double-sealed valve according to claim 4, characterized in that: The latch pin (16) is embedded in the insertion hole (17), and the top of the thin rod (24) is embedded in the limiting groove (19).

6. A double-sealed valve according to claim 4, characterized in that: The spring (20) is arranged between the latch pin (16) and the cylindrical groove (18), and the latch pin (16) can slide up and down along the inner wall of the insertion hole (17).

7. A double-sealed valve according to claim 1, characterized in that: A pipe opening (5) is fixed around the outer side of the side tube (4), and a frame (9) is inserted in the side tube (4). A gauze (22) is longitudinally fixed on the inner side of the frame (9). A lap ring (6) is fixed on the outside of the frame (9), and screw holes (8) are provided inside the lap ring (6) at both the upper and lower positions, and bolts (7) are meshed and connected in the screw holes (8).

8. A double-sealed valve according to claim 7, characterized in that: The bolt (7) can lock the lap ring (6) and the pipe mouth (5), and the frame (9) can slide along the inner wall of the side pipe (4).

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