Pneumatic pipeline stop valve with good sealing performance

Abstract

The utility model relates to the technical field of pipeline stop valves, and discloses a pneumatic pipeline stop valve with good sealing performance, which comprises a shell, an air inlet pipe penetrates through the top end of the shell, an intubation pipe is slidably connected in one end of the air inlet pipe, the other end of the intubation pipe is communicated with an air bag, and a groove is formed in the inner side wall of one end, close to the intubation pipe, of the air inlet pipe. And two protruding blocks are slidably connected into the groove, the adjacent sides of the two protruding blocks are fixedly connected to the two sides of the top end of the inserting pipe correspondingly, mounting bins are formed in the two sides of the inner bottom wall of the groove, second springs are fixedly connected to the inner bottom walls of the two mounting bins, and fixing blocks are fixedly connected to the other ends of the two second springs. According to the air bag fixing device, the inserting pipe is rotated to enable the protruding block to move in the groove, when the protruding block moves, the fixing groove can push the fixing block to retract into the mounting bin, meanwhile, the fixing block is pulled downwards to take out the protruding block from the interior of the open groove, and therefore a worker can replace the air bag.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline stop valves, in particular to a pneumatic pipeline stop valve with good sealing performance. Background Art

[0002] Pneumatic pipeline stop valve is a valve used in pneumatic systems. It is mainly used as a switch device to control the flow of gas. In industrial production, pneumatic pipeline stop valves are widely used in various fields, such as automobile manufacturing, mechanical processing, chemical production, etc., to achieve precise control and regulation of gas flow.

[0003] After searching, the Chinese patent announcement number: CN213393632U discloses a pneumatic pipeline stop valve, including a valve body, the inner wall of the valve body is slidably connected with a partition and a connecting seat, the side of the valve body is provided with a first air inlet pipe and a second air inlet pipe, the bottom of the connecting seat is fixedly connected with a connecting rod, the end of the connecting rod is rotatably connected with a baffle through a rotating shaft, the inner wall of the valve body is fixedly connected with a limiting flow ring, the baffle is fittedly connected to the limiting flow ring, the side of the baffle is fixedly connected with a spring cylinder, the side of the valve body is provided with an external pipeline, and the surfaces of the valve body and the external pipeline are fixedly connected with a connecting ring. The utility model achieves better shut-off effect through the cooperation between the spring tube, the flow limiting ring and the baffle, avoids the occurrence of gaps due to the impact of liquid flow, which affects the use of the structure, thereby ensuring the effect of liquid shut-off. During the long-term use of the shut-off valve, the baffle inside it often wears out, thereby reducing its sealing effect, requiring staff to replace it. However, since it is directly fixed to the third connecting column, it is more time-consuming for staff to replace it. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a pneumatic pipeline stop valve with good sealing performance, aiming to improve the problem in the prior art that the baffle inside the stop valve often wears out over a long period of time and needs to be replaced, but because it is directly fixed to the third connecting column, it is time-consuming for the staff to replace it.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic pipeline stop valve with good sealing performance, comprising a shell, an air inlet pipe passing through the top of the shell, a cannula being slidably connected inside one end of the air inlet pipe, an air bag being connected to the other end of the cannula, a groove being provided on the inner side wall of the end of the air inlet pipe close to the cannula, two protrusions being slidably connected inside the groove, adjacent sides of the two protrusions being respectively fixedly connected to the two sides of the top of the cannula, installation bins being provided on both sides of the inner bottom wall of the groove, spring 2 being fixedly connected to the inner bottom walls of the two installation bins, the other ends of the two springs 2 being fixedly connected to fixing blocks, fixing grooves being provided at the bottom ends of the two protrusions, the ends of the two fixing blocks away from the spring 2 being slidably connected inside the fixing grooves, and fixing mechanisms are provided on the front and back sides of both ends of the shell.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes multiple mounting blocks, and the multiple mounting blocks are respectively fixedly connected to the front and rear ends of both sides of the shell, and slots are provided on both sides of the shell, and pipes are slidably connected inside the two slots, and mounting grooves are provided inside the multiple mounting blocks, and sliders are slidably connected inside the multiple mounting grooves, and one end of the multiple sliders is fixedly connected to a pull rod, and a spring is arranged on the outside of the multiple pull rods, and sliding grooves are provided at the front and rear ends of the adjacent sides of two pipes.

[0008] As a further description of the above technical solution:

[0009] One end of each of the plurality of springs is fixedly connected to the inner side wall of the mounting groove, and the other end of each of the plurality of springs is fixedly connected to one end of the sliding block close to the pull rod.

[0010] As a further description of the above technical solution:

[0011] The inner side wall of one end of the air inlet pipe close to the shell is provided with grooves on both the front and rear sides.

[0012] As a further description of the above technical solution:

[0013] Through holes are provided on the front and rear sides of the inner side walls of the two slots, and the ends of the plurality of sliders away from the pull rod are slidably connected inside the slide grooves, and the outer sides of the middle parts of the plurality of sliders are slidably connected inside the through holes.

[0014] As a further description of the above technical solution:

[0015] Limiting grooves are arranged on both sides of the inner side walls of the two installation bins, and limiting blocks are slidably connected inside the plurality of limiting grooves, and adjacent sides of the plurality of limiting blocks are fixedly connected to both sides of the fixed block respectively.

[0016] As a further description of the above technical solution:

[0017] The top end of the air intake pipe is fixedly connected with an air pump, the inside of the air intake pipe is fixedly connected with a filter plate, and the outer side of one end of the air intake pipe close to the shell is fixedly connected with a sealing ring.

[0018] As a further description of the above technical solution:

[0019] Both sides of the inner side wall of the shell are fixedly connected with rubber rings.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, the insert tube is rotated to move the protrusion inside the groove. Since the fixed block and the fixed groove are both semicircular, the fixed groove will push the fixed block back into the installation bin when the protrusion moves, and at the same time, the protrusion can be pulled downward to be taken out from the groove, so that the staff can replace the airbag.

[0022] In the utility model, the pipe is inserted into the slot, and then the slide block is pushed through the through hole into the slide groove by the second spring, so that the pipe is fixed to the slot, and the staff can quickly connect the shell and the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a pneumatic pipeline stop valve with good sealing performance proposed by the utility model;

[0024] Figure 2 This is a cross-sectional view of an air inlet pipe of a pneumatic pipeline stop valve with good sealing performance proposed by the utility model;

[0025] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 A three-dimensional diagram of an air bag of a pneumatic pipeline stop valve with good sealing performance proposed by the utility model;

[0027] Figure 5 A cross-sectional view of a shell of a pneumatic pipeline stop valve with good sealing performance proposed by the utility model;

[0028] Figure 6 The utility model is a cross-sectional view of a mounting block of a pneumatic pipeline stop valve with good sealing performance.

[0029] Legend:

[0030] 1. Shell; 2. Fixing mechanism; 201. Mounting block; 202. Slider; 203. Slide; 204. Through hole; 205. Slot; 206. Pull rod; 207. Spring 1; 208. Mounting slot; 3. Air inlet pipe; 4. Air pump; 5. Sealing ring; 6. Pipe; 7. Air bag; 8. Insert tube; 9. Slot; 10. Filter plate; 11. Groove; 12. Bump; 13. Limiting slot; 14. Mounting compartment; 15. Limiting block; 16. Fixing block; 17. Spring 2; 18. Fixing slot; 19. Rubber ring. DETAILED DESCRIPTION

[0031] 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.

[0032] Reference Figure 2 , Figure 3 and Figure 4 , the utility model provides an embodiment: a pneumatic pipeline stop valve with good sealing performance, including a shell 1, an air inlet pipe 3 is penetrated at the top of the shell 1, a cannula 8 is slidably connected inside one end of the air inlet pipe 3, and an air bag 7 is connected to the other end of the cannula 8, a groove 11 is provided on the inner side wall of the end of the air inlet pipe 3 close to the cannula 8, two protrusions 12 are slidably connected inside the groove 11, and the adjacent sides of the two protrusions 12 are respectively fixedly connected to the two sides of the top of the cannula 8, and mounting bins 14 are provided on both sides of the inner bottom wall of the groove 11, and springs 17 are fixedly connected to the inner bottom walls of the two mounting bins 14, and the other ends of the two springs 17 are fixedly connected to fixing blocks 16, and fixing grooves 18 are provided at the bottom ends of the two protrusions 12, and the ends of the two fixing blocks 16 away from the springs 17 are slidably connected inside the fixing groove 18, and slots 9 are provided on the front and back sides of the inner side wall of the end of the air inlet pipe 3 close to the shell 1;

[0033] Specifically, the insert tube 8 is rotated to move the protrusion 12 inside the groove 11. When the protrusion 12 moves, the fixing groove 18 will push the fixing block 16 to retract into the installation chamber 14, and at the same time, the protrusion 12 is pulled downward to be taken out from the slot 9, so that the staff can replace the airbag 7.

[0034] Reference Figure 1 , Figure 5 and Figure 6, both ends of the housing 1 are provided with fixing mechanisms 2 on both sides, the fixing mechanisms 2 include a plurality of mounting blocks 201, the plurality of mounting blocks 201 are respectively fixedly connected to the front and rear ends of both sides of the housing 1, slots 205 are provided on both sides of the housing 1, pipes 6 are slidably connected inside the two slots 205, mounting grooves 208 are provided inside the plurality of mounting blocks 201, sliders 202 are slidably connected inside the plurality of mounting grooves 208, one end of the plurality of sliders 202 is fixedly connected with a pull rod 206, a spring 207 is provided on the outside of the plurality of pull rods 206, and a slide groove 203 is provided on both ends of the front and rear ends of the adjacent sides of the two pipes 6;

[0035] Specifically, the pipe 6 is inserted into the slot 205 , and then the slide block 202 is pushed through the through hole 204 and into the slide groove 203 by the spring 2 17 , thereby connecting the housing 1 and the pipe 6 .

[0036] Reference Figure 6 , one end of the multiple springs 207 is fixedly connected to the inner wall of the installation groove 208, the other end of the multiple springs 207 is fixedly connected to the end of the slider 202 close to the pull rod 206, the inner walls of the two slots 205 are provided with through holes 204 on both the front and rear sides, the ends of the multiple sliders 202 away from the pull rod 206 are slidably connected to the inside of the slide groove 203, and the outer middle part of the multiple sliders 202 is slidably connected to the inside of the through hole 204;

[0037] Specifically, the pipe 6 is inserted into the slot 205 , and then the slide block 202 is pushed through the through hole 204 and into the slide groove 203 by the spring 2 17 , thereby connecting the housing 1 and the pipe 6 .

[0038] Reference Figure 3 , both sides of the inner wall of the two installation bins 14 are provided with limiting grooves 13, and the limiting blocks 15 are slidably connected inside the limiting grooves 13, and the adjacent sides of the limiting blocks 15 are fixedly connected to the two sides of the fixing block 16 respectively;

[0039] Specifically, the fixing block 16 is limited by the cooperation between the limiting groove 13 and the limiting block 15 to prevent the fixing groove 18 from driving the fixing block 16 to move together when the protrusion 12 rotates, thereby preventing the pull rod 206 and the spring 2 17 from deforming.

[0040] Reference Figure 1 and Figure 2 The top of the air inlet pipe 3 is fixedly connected to an air pump 4, the inside of the air inlet pipe 3 is fixedly connected to a filter plate 10, and the outer side of one end of the air inlet pipe 3 close to the housing 1 is fixedly connected to a sealing ring 5;

[0041] Specifically, air is delivered to the air inlet pipe 3 through the air pump 4, and at the same time, air is delivered to the airbag 7 through the cooperation between the air inlet pipe 3 and the cannula 8, so that it expands inside the shell 1 and fills the entire shell 1, thereby achieving the effect of blocking the pipeline 6.

[0042] Reference Figure 5 , rubber rings 19 are fixedly connected to both sides of the inner wall of the housing 1;

[0043] Specifically, when the airbag 7 is inflated, the rubber rings 19 on both sides cooperate to improve the blocking effect of the airbag 7 .

[0044] Working principle: when it is necessary to connect the shell 1 and the pipe 6, the pipe 6 can be extended into the slot 205, and then the slider 202 is pushed through the through hole 204 and into the slide groove 203 by the spring 2 17 to connect the shell 1 and the pipe 6. At the same time, when it is necessary to stop the flow of the pipe 6, the air can be transported to the inside of the air intake pipe 3 by the air pump 4, and at the same time, the air intake pipe 3 and the insertion tube 8 cooperate to transport the air to the inside of the airbag 7, so that it expands inside the shell 1 and fills the entire shell 1, thereby achieving the effect of blocking the pipe 6. When the airbag 7 ages due to long-term use, the air intake pipe 3 can be removed from the top of the shell 1, and then the insertion tube 8 is rotated to make the protrusion 12 move inside the groove 11. Because the fixing block 16 and the fixing groove 18 are both semicircular, the fixing groove 18 will push the fixing block 16 to retract into the installation bin 14 when the protrusion 12 moves, and at the same time, the protrusion 12 is pulled downward to be taken out from the inside of the slot 9, so that the staff can replace the airbag 7.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic pipeline stop valve with good sealing performance, comprising a housing (1), characterized in that: An air inlet pipe (3) passes through the top of the shell (1), one end of the air inlet pipe (3) is slidably connected to a cannula (8), the other end of the cannula (8) is connected to an air bag (7), a groove (11) is provided on the inner side wall of the end of the air inlet pipe (3) close to the cannula (8), two protrusions (12) are slidably connected inside the groove (11), the adjacent sides of the two protrusions (12) are respectively fixedly connected to the two sides of the top of the cannula (8), mounting chambers (14) are provided on both sides of the inner bottom wall of the groove (11), springs (17) are fixedly connected to the inner bottom walls of the two mounting chambers (14), the other ends of the two springs (17) are fixedly connected to fixing blocks (16), the bottom ends of the two protrusions (12) are provided with fixing grooves (18), the ends of the two fixing blocks (16) away from the springs (17) are slidably connected inside the fixing grooves (18), and fixing mechanisms (2) are provided on both front and rear sides of the two ends of the shell (1).

2. A pneumatic pipeline stop valve with good sealing performance according to claim 1, characterized in that: The fixing mechanism (2) comprises a plurality of mounting blocks (201), wherein the plurality of mounting blocks (201) are respectively fixedly connected to the front and rear ends of both sides of the outer shell (1), slots (205) are provided on both sides of the outer shell (1), pipes (6) are slidably connected inside the two slots (205), mounting grooves (208) are provided inside the plurality of mounting blocks (201), sliders (202) are slidably connected inside the plurality of mounting grooves (208), one end of the plurality of sliders (202) is fixedly connected to a pull rod (206), a spring 1 (207) is provided on the outside of the plurality of pull rods (206), and sliding grooves (203) are provided at the front and rear ends of the adjacent sides of the two pipes (6).

3. A pneumatic pipeline stop valve with good sealing performance according to claim 2, characterized in that: One end of each of the plurality of springs (207) is fixedly connected to the inner wall of the mounting groove (208), and the other end of each of the plurality of springs (207) is fixedly connected to one end of the slider (202) close to the pull rod (206).

4. A pneumatic pipeline stop valve with good sealing performance according to claim 1, characterized in that: The inner wall of one end of the air inlet pipe (3) close to the outer shell (1) is provided with grooves (9) on both the front and rear sides.

5. A pneumatic pipeline stop valve with good sealing performance according to claim 2, characterized in that: Through holes (204) are provided on both the front and rear sides of the inner walls of the two slots (205); the ends of the plurality of sliders (202) away from the pull rod (206) are slidably connected inside the slide groove (203); and the outer middle parts of the plurality of sliders (202) are slidably connected inside the through holes (204).

6. A pneumatic pipeline stop valve with good sealing performance according to claim 1, characterized in that: Limiting grooves (13) are provided on both sides of the inner side walls of the two installation bins (14), and the limiting blocks (15) are slidably connected inside the plurality of limiting grooves (13), and adjacent sides of the plurality of limiting blocks (15) are fixedly connected to both sides of the fixing block (16) respectively.

7. A pneumatic pipeline stop valve with good sealing performance according to claim 1, characterized in that: The top end of the air intake pipe (3) is fixedly connected to an air pump (4), the interior of the air intake pipe (3) is fixedly connected to a filter plate (10), and the outer side of one end of the air intake pipe (3) close to the housing (1) is fixedly connected to a sealing ring (5).

8. A pneumatic pipeline stop valve with good sealing performance according to claim 1, characterized in that: Rubber rings (19) are fixedly connected to both sides of the inner wall of the outer shell (1).

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