Quantitative adding device for liquid dust suppressant

Abstract

The invention belongs to the technical field of quantitative adding devices, and discloses a liquid dust suppressant quantitative adding device which comprises a water supply pipe and an adding pipe, the adding pipe is fixedly communicated with the water supply pipe, the adding pipe is communicated with an external box body, and a front baffle ring and a rear baffle ring are fixedly arranged in the water supply pipe. An automatic adding mechanism is arranged between the front baffle ring and the rear baffle ring, and a sealing mechanism matched with the rear baffle ring is arranged on the outer side of the rear baffle ring. Wherein the automatic adding mechanism comprises a barrel body, a telescopic spring, a fixing frame and an ejector rod, the barrel body and the telescopic spring are movably arranged in the water supply pipe, the telescopic spring is located between the barrel body and the rear baffle ring, the fixing frame is fixedly arranged on the barrel body, and the ejector rod is fixedly arranged on the fixing frame and used in cooperation with the sealing mechanism; through cooperation of the barrel, the telescopic spring, the sealing mechanism and the like, when the water supply pipe supplies water, the adding amount of the liquid dust suppressant in unit time can be controlled according to the flow speed of the water supply pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of quantitative adding devices, in particular to a quantitative adding device for a liquid dust suppressant. Background Art

[0002] In some dusty places, such as construction sites or mines, a lot of dust is often generated during production operations. At this time, it is necessary to reduce the dust by spraying water. In order to further improve the dust reduction effect, liquid dust suppressant needs to be added to the water spraying pipe.

[0003] In the process of adding existing liquid dust suppressants, some are added into the water supply pipe manually, which is cumbersome to operate; some are added into the water supply pipe by pumping, but when the flow rate in the water supply pipe changes, the pumped liquid dust suppressant is still being added, resulting in a large difference in the ratio of the two, which reduces the use effect of the liquid dust suppressant. Therefore, it is necessary to provide a device that can control the addition of liquid dust suppressant according to the flow rate of water. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a liquid dust suppressant quantitative addition device, which effectively solves the problems raised by the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quantitative addition device for liquid dust suppressant, comprising a water supply pipe and an addition pipe, the addition pipe is fixedly connected to the water supply pipe, the addition pipe is connected to an external box body, a front baffle ring and a rear baffle ring are fixedly arranged inside the water supply pipe, an automatic adding mechanism is arranged between the front baffle ring and the rear baffle ring, and a sealing mechanism cooperating with the rear baffle ring is arranged on the outer side of the rear baffle ring; wherein the automatic adding mechanism comprises a cylinder, a telescopic spring, a fixing frame and a push rod, wherein the cylinder and the telescopic spring are both movably arranged in the water supply pipe, the telescopic spring is located between the cylinder and the rear baffle ring, the fixing frame is fixedly arranged on the cylinder, the push rod is fixedly arranged on the fixing frame, and the push rod is used in conjunction with the sealing mechanism.

[0006] Preferably, the sealing mechanism includes a positioning frame, a rod body, a supporting spring, a sealing plug and a limit plate, wherein the positioning frame is fixedly arranged in the water supply pipe, the rear retaining ring is located between the telescopic spring and the positioning frame, the rod body is slidably arranged in the rod hole on the positioning frame, the supporting spring surrounds the rod body, the sealing plug and the limit plate are respectively fixedly arranged at both ends of the rod body, and the sealing plug is used in conjunction with the rear retaining ring for sealing.

[0007] Preferably, the radius of the end of the sealing plug close to the positioning frame is larger than the radius of the middle portion of the sealing plug, and the radius of the middle portion of the sealing plug is larger than the radius of the end of the sealing plug far from the positioning frame.

[0008] Preferably, multiple groups of grooves are provided on the cylinder, each group of grooves includes two sealing grooves, a rod groove, and a connecting groove, wherein the two sealing grooves are distributed at both ends of the cylinder, the two sealing grooves are connected through the connecting groove, and the rod groove is connected to one of the sealing grooves; wherein a sealing ring is arranged in the sealing groove, an annular mounting groove is formed on the outer side of the sealing ring, and a deformable cleaning ring is fixedly arranged in the mounting groove.

[0009] Preferably, the interior of the sealing ring is connected to an integral diaphragm, and a sealing cavity and a cleaning cavity are formed inside the sealing ring through the diaphragm. The interior of the sealing cavity and the interior of the cleaning cavity are both filled with liquid. The cleaning cavity is located on the inner side of the deformable cleaning ring and is arranged corresponding to it. The interior of the sealing cavity is fixedly provided with a plurality of integral flexible sleeves along its circumference, a plurality of connecting rods are fixedly provided on the diaphragm, and a water retaining frame is provided on the outer side of the cylinder. The connecting rods pass through the flexible sleeves and the rod holes on the cylinder in sequence and are fixed to the water retaining frame, and a reset spring is surrounded by the connecting rods, and the reset spring is located between the water retaining frame and the cylinder.

[0010] Preferably, the wall thickness above the sealing cavity is smaller than the wall thickness of the other side walls, and the wall thickness above the cleaning cavity is smaller than the wall thickness of the other side walls.

[0011] Preferably, the water retaining frame is provided with a stirring member, which comprises a rotating shaft and a plurality of paddles, wherein the rotating shaft is rotatably arranged at the center of the water retaining frame, and the plurality of paddles are fixedly arranged along the circumference of the rotating shaft.

[0012] Preferably, an upper retaining ring and a lower mounting frame are fixedly provided inside the adding tube, the upper retaining ring is located above the lower mounting frame, and a sealing and cleaning mechanism is provided on the lower mounting frame.

[0013] Preferably, the sealing and cleaning mechanism includes a middle rod, a middle spring, an upper sealing block, a strip block and a lower cleaning ring, wherein the middle rod is slidably arranged in a rod hole on a lower mounting frame, the middle spring is wrapped around the middle rod, the upper sealing block is fixedly arranged at the top end of the middle rod and seals with an upper retaining ring, the strip block is fixedly arranged at the bottom end of the middle rod, the lower cleaning ring is fixedly arranged on the strip block, and the middle spring is located between the upper sealing block and the lower cleaning ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. During operation, through the cooperation of the provided cylinder, telescopic spring, sealing mechanism, etc., the amount of liquid dust suppressant added per unit time can be controlled according to the flow rate of the water supply pipe when the water supply pipe is supplying water, and when the water supply pipe stops supplying water, the liquid dust suppressant can be stopped from being added through the cylinder, and during the movement of the cylinder, the scale on the inner wall of the water supply pipe can be cleaned to ensure the smoothness of the movement of the cylinder;

[0016] 2. During operation, through the cooperation of the water retaining frame, sealing ring, cleaning cavity and sealing cavity, when the water flows, the deformable cleaning ring can be attached to the inner wall of the water supply pipe, and the sealing part can be away from the inner wall of the water supply pipe. The cleaning effect of scale is improved by the deformable cleaning ring, and at the same time, the sealing part on the sealing ring no longer contacts the inner wall of the water supply pipe to reduce wear; when the water does not flow, the cleaning cavity is deformed to drive the deformable cleaning ring away from the inner wall of the water supply pipe, and the upper surface of the sealing cavity is tightly attached to the inner wall of the water supply pipe after the deformation, which has a good sealing effect;

[0017] 3. During operation, through the coordinated use of the provided cylinder, sealing ring and upper sealing block, a multi-layer seal can be formed between the addition pipe and the water supply pipe to improve the sealing performance and prevent the liquid dust suppressant in the addition pipe from entering the water supply pipe when not needed;

[0018] 4. During operation, the dirt in the adding pipe can be cleaned through the lower cleaning ring to prevent the accumulation of dirt from affecting the addition of liquid dust suppressant. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the external structure of a liquid dust suppressant quantitative addition device of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a liquid dust suppressant quantitative addition device of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the automatic adding mechanism of the present invention;

[0024] Figure 4 It is a schematic diagram of the sealing mechanism structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention;

[0026] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0027] Figure 7 It is a schematic diagram of the sealing ring structure of the present invention;

[0028] Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0029] Fig. 9 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0030] Fig.10 It is a schematic diagram of the internal structure of the addition tube of the present invention.

[0031] In the figure: 1. water supply pipe; 2. adding pipe; 3. front baffle ring; 4. rear baffle ring; 5. cylinder; 6. telescopic spring; 7. fixing frame; 8. push rod; 9. positioning frame; 10. rod body; 11. supporting spring; 12. sealing plug; 13. limit plate; 14. sealing groove; 15. rod groove; 16. connecting groove; 17. sealing ring; 18. mounting groove; 19. deformable cleaning ring; 20. diaphragm; 21. sealing cavity; 22. cleaning cavity; 23. flexible sleeve; 24. connecting rod; 25. water baffle frame; 26. reset spring; 27. paddle; 28. upper baffle ring; 29. ​​lower mounting frame; 30. middle rod; 31. middle spring; 32. upper sealing block; 33. strip block; 34. lower cleaning ring; 35. rotating shaft. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Depend on Figure 1-10The present invention relates to a quantitative addition device for liquid dust suppressant, comprising a water supply pipe 1 and an addition pipe 2, wherein the addition pipe 2 is fixedly connected to the water supply pipe 1, and the addition pipe 2 is connected to an external box body, and the liquid dust suppressant is stored inside the external box body. In order to solve the existing problems in the process of adding liquid dust suppressant, some of them are manually added to the water supply pipe 1, which is relatively cumbersome to operate, and some of them are added to the water supply pipe 1 by pumping. However, when the flow rate in the water supply pipe 1 changes, the pumped liquid dust suppressant is still being added, so the ratio of the two is quite different, which reduces the use of the liquid dust suppressant. Effect, therefore, it is necessary to provide a device capable of controlling the addition of liquid dust suppressant according to the flow rate of water flow, specifically, a front baffle ring 3 and a rear baffle ring 4 are fixedly arranged inside the water supply pipe 1, an automatic adding mechanism is arranged between the front baffle ring 3 and the rear baffle ring 4, and a sealing mechanism cooperating with the rear baffle ring 4 is arranged on the outside of the rear baffle ring 4; wherein the automatic adding mechanism comprises a cylinder 5, a telescopic spring 6, a fixing frame 7 and a push rod 8, wherein the cylinder 5 and the telescopic spring 6 are both movably arranged in the water supply pipe 1, the telescopic spring 6 is located between the cylinder 5 and the rear baffle ring 4, the fixing frame 7 is fixedly arranged on the cylinder 5, the push rod 8 is fixedly arranged on the fixing frame 7, and the push rod 8 is used in conjunction with the sealing mechanism;

[0034] The sealing mechanism includes a positioning frame 9, a rod body 10, a supporting spring 11, a sealing plug 12 and a limiting plate 13, wherein the positioning frame 9 is fixedly arranged in the water supply pipe 1, the rear retaining ring 4 is located between the telescopic spring 6 and the positioning frame 9, the rod body 10 is slidably arranged in the rod hole on the positioning frame 9, the supporting spring 11 surrounds the rod body 10, the sealing plug 12 and the limiting plate 13 are respectively fixedly arranged at both ends of the rod body 10, and the sealing plug 12 is used in sealing cooperation with the rear retaining ring 4;

[0035] With such a design, when in use, the water supply pipe 1 can be installed in a place where dust needs to be controlled, such as a construction site or an ore processing place. When water flows through the water supply pipe 1, the water flow will impact the fixing frame 7 on the cylinder 5, and the fixing frame 7 drives the push rod 8 to impact the sealing plug 12, so that the sealing plug 12 squeezes the telescopic spring 6 and no longer blocks the rear baffle ring 4, so that the water flow flows inside the water supply pipe 1; at the same time, the fixing frame 7 drives the cylinder 5 to slide in the water supply pipe 1 and squeezes the telescopic spring 6, so that the cylinder 5 gradually releases the blockage of the bottom end of the addition pipe 2. At this time, the liquid dust suppressant in the external box can enter the inside of the water supply pipe 1 through the addition pipe 2, realizing the addition process of the liquid dust suppressant, and when the water flow in the water supply pipe 1 stops flowing, under the action of the telescopic spring 6, the cylinder 5 returns to the original position and seals the bottom end of the addition pipe 2.

[0036] It should be noted that in the above process, no structure is set inside the addition tube 2, so that under the drive of the water flow in the water supply pipe 1, the liquid dust suppressant in the external box enters the water supply pipe 1 through the addition tube 2, and the greater the flow rate of the water flow in the water supply pipe 1, the greater the displacement of the cylinder 5, so that the effective connection area between the addition tube 2 and the water supply pipe 1 is larger, thereby achieving the purpose of adding the corresponding liquid dust suppressant according to the flow rate of the water flow in the water supply pipe 1; and in the process of the movement of the cylinder 5, the scale in the water supply pipe 1 can also be cleaned through the edge of the cylinder 5 to ensure the smoothness of the movement of the cylinder 5.

[0037] Specifically, the radius of the end of the sealing plug 12 close to the positioning frame 9 is greater than the radius of the middle of the sealing plug 12 , and the radius of the middle of the sealing plug 12 is greater than the radius of the end of the sealing plug 12 away from the positioning frame 9 .

[0038] Furthermore, in order to further improve the sealing performance of the cylinder 5 to the bottom end of the adding pipe 2, a plurality of groups of grooves are provided on the cylinder 5, each group of grooves includes two sealing grooves 14, a rod groove 15, and a connecting groove 16, wherein the two sealing grooves 14 are distributed at both ends of the cylinder 5, the two sealing grooves 14 are connected through the connecting groove 16, and the rod groove 15 is connected to one of the sealing grooves 14; wherein a sealing ring 17 is arranged in the sealing groove 14, and an annular mounting groove 18 is formed on the outer side of the sealing ring 17, and a deformable cleaning ring 19 is fixedly arranged in the mounting groove 18.

[0039] With this design, during use, when the cylinder 5 moves, the deformable cleaning ring 19 can fit more closely to the inner wall of the water supply pipe 1, so as to improve the cleaning effect of scale. When the water flow is not flowing, the sealing ring 17 can improve the sealing performance of the addition pipe 2.

[0040] Further, the inside of the sealing ring 17 is connected to a diaphragm 20, and the inside of the sealing ring 17 forms a sealing cavity 21 and a cleaning cavity 22 through the diaphragm 20. The inside of the sealing cavity 21 and the inside of the cleaning cavity 22 are filled with liquid. The structures of the two sealing rings 17 in the two sealing grooves 14 are basically the same. The difference is that the cleaning cavity 22 and the sealing cavity 21 in the sealing ring 17 near one end of the water retaining frame 25 are both provided with a flexible sleeve 23, while the sealing ring 17 away from the end of the water retaining frame 25 is only provided with a flexible sleeve 23. A flexible sleeve 23 is provided in the sealing cavity 21, but no flexible sleeve 23 is provided in the cleaning cavity 22; a plurality of connecting rods 24 are fixedly provided on the diaphragm 20, the connecting rods 24 and the diaphragms 20 in the two sealing rings 17 are fixedly provided, and the connecting rods 24 and the rod grooves 15, the connecting grooves 16 and the flexible sleeve 23 are all movably matched, a water retaining frame 25 is provided on the outer side of the cylinder 5, the connecting rods 24 and the water retaining frame 25 are fixedly provided, and a return spring 26 is surrounded on the connecting rod 24, and the return spring 26 is located between the water retaining frame 25 and the cylinder 5;

[0041] With such a design, when water flows, the water retaining frame 25 will drive the connecting rod 24 to move and compress the reset spring 26 due to the impact of the water flow, and the connecting rod 24 will drive the diaphragm 20 to move toward the inside of the cleaning cavity 22. After the upper surface of the cleaning cavity 22 is deformed under pressure, the deformable cleaning ring 19 will fit tightly against the inner wall of the water supply pipe 1, so as to further improve the cleaning force of scale. At the same time, due to the pulling of the diaphragm 20, the sealing cavity 21 will also be deformed, so that the upper surface of the sealing cavity 21 will shrink and move away from the inner wall of the water supply pipe 1. In other words, the part of the sealing ring 17 containing the deformable cleaning ring 19 will fit against the inner wall of the water supply pipe 1, and the sealing part, that is, the part of the sealing ring 17 away from the deformable cleaning ring 19 will move away from the inner wall of the water supply pipe 1. In this way, the cleaning effect of scale can be improved by the deformable cleaning ring 19 when the water flows, and at the same time, the sealing part on the sealing ring 17 will no longer contact the inner wall of the water supply pipe 1, so as to reduce wear.

[0042] When the water does not flow, the cylinder 5 seals the adding pipe 2, and at the same time, under the action of the reset spring 26, the connecting rod 24 drives the diaphragm 20 back to its original position. At this time, under the pull of the diaphragm 20, the cleaning cavity 22 is deformed to drive the deformable cleaning ring 19 away from the inner wall of the water supply pipe 1, and the upper surface of the sealing cavity 21 is tightly fitted to the inner wall of the water supply pipe 1 after deformation, achieving a good sealing effect.

[0043] It should be noted that the deformable cleaning ring 19 can be made of a cleaning brush planted on a rubber ring, or it can be made of a sponge ring, and the choice can be made according to actual needs; and there is a reserved gap between the outer wall of the cylinder mouth at one end of the cylinder body 5 close to the water retaining frame 25 and the inner wall of the water supply pipe 1, so that when the sealing ring 17 shrinks, the impact of the water flow will flush the deformable cleaning ring 19 to ensure its use effect.

[0044] Specifically, the wall thickness above the sealing cavity 21 is smaller than the wall thickness of the other side walls, and the wall thickness above the cleaning cavity 22 is smaller than the wall thickness of the other side walls; this design allows the sealing cavity 21 and the cleaning cavity 22 to be deformed into the required shapes.

[0045] In order to further accelerate the mixing of the liquid dust suppressant and the water flow, a stirring member is provided on the water retaining frame 25, and the stirring member includes a rotating shaft 35 and a plurality of paddles 27, wherein the rotating shaft 35 is rotatably arranged at the center of the water retaining frame 25, and the plurality of paddles 27 are fixedly arranged along the circumference of the rotating shaft 35;

[0046] With this design, the blades 27 drive the rotating shaft 35 to rotate under the impact of the water flow, so that when the liquid dust suppressant enters the water flow in the water supply pipe 1, the rotating blades 27 can accelerate the mixing speed of the two.

[0047] Furthermore, in order to prevent the liquid dust suppressant in the addition pipe 2 from entering the addition pipe 2 when not needed, an upper retaining ring 28 and a lower mounting frame 29 are fixedly arranged inside the addition pipe 2, the upper retaining ring 28 is located above the lower mounting frame 29, and a sealing and cleaning mechanism is arranged on the lower mounting frame 29; the sealing and cleaning mechanism comprises a middle rod 30, a middle spring 31, an upper sealing block 32, a strip block 33 and a lower cleaning ring 34, wherein the middle rod 30 is slidably arranged in a rod hole on the lower mounting frame 29, the middle spring 31 surrounds the middle rod 30, the upper sealing block 32 is fixedly arranged at the top end of the middle rod 30 and is sealed with the upper retaining ring 28, the strip block 33 is fixedly arranged at the bottom end of the middle rod 30, the lower cleaning ring 34 is fixedly arranged on the strip block 33, and the middle spring 31 is located between the upper sealing block 32 and the lower cleaning ring 34;

[0048] With such a design, when water flows, the water flow in the water supply pipe 1 drives the upper sealing block 32 in the addition pipe 2 to move, so that the upper sealing block 32 no longer seals the upper baffle ring 28, so that the liquid dust suppressant passes through the upper baffle ring 28 and enters the water supply pipe 1, and the upper baffle ring 28 drives the lower cleaning ring 34 to move through the middle rod 30 during the movement, and the dirt on the connection between the addition pipe 2 and the water supply pipe 1 is cleaned by the lower cleaning ring 34 to prevent dirt accumulation from affecting the addition of the liquid dust suppressant, and when the water stops flowing, under the action of the middle spring 31, the upper sealing block 32 seals the upper baffle ring 28 again.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] 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 quantitative addition device for a liquid dust suppressant, comprising a water supply pipe (1) and an addition pipe (2), wherein the addition pipe (2) is fixedly connected to the water supply pipe (1), and the addition pipe (2) is connected to an external box, characterized in that: The water supply pipe (1) is fixedly provided with a front baffle ring (3) and a rear baffle ring (4), an automatic adding mechanism is provided between the front baffle ring (3) and the rear baffle ring (4), and a sealing mechanism cooperating with the front baffle ring (4) is provided on the outside of the rear baffle ring (4); wherein the automatic adding mechanism comprises a cylinder (5), a telescopic spring (6), a fixing frame (7) and a push rod (8), wherein the cylinder (5) and the telescopic spring (6) are both movably arranged in the water supply pipe (1), the telescopic spring (6) is located between the cylinder (5) and the rear baffle ring (4), the fixing frame (7) is fixedly arranged on the cylinder (5), the push rod (8) is fixedly arranged on the fixing frame (7), and the push rod (8) cooperates with the sealing mechanism.

2. A liquid dust suppressant quantitative addition device according to claim 1, characterized in that: The sealing mechanism comprises a positioning frame (9), a rod body (10), a supporting spring (11), a sealing plug (12) and a limiting plate (13), wherein the positioning frame (9) is fixedly arranged in the water supply pipe (1), the rear retaining ring (4) is located between the telescopic spring (6) and the positioning frame (9), the rod body (10) is slidably arranged in the rod hole on the positioning frame (9), the supporting spring (11) surrounds the rod body (10), the sealing plug (12) and the limiting plate (13) are respectively fixedly arranged at two ends of the rod body (10), and the sealing plug (12) and the rear retaining ring (4) are used in a sealing manner.

3. A liquid dust suppressant quantitative addition device according to claim 2, characterized in that: The radius of the end of the sealing plug (12) close to the positioning frame (9) is greater than the radius of the middle of the sealing plug (12), and the radius of the middle of the sealing plug (12) is greater than the radius of the end of the sealing plug (12) far from the positioning frame (9).

4. A liquid dust suppressant quantitative addition device according to claim 2, characterized in that: The cylinder (5) is provided with a plurality of groups of grooves, each group of grooves comprising two sealing grooves (14), a rod groove (15), and a connecting groove (16), wherein the two sealing grooves (14) are distributed at both ends of the cylinder (5), the two sealing grooves (14) are connected via the connecting groove (16), and the rod groove (15) is connected to one of the sealing grooves (14); wherein a sealing ring (17) is arranged in the sealing groove (14), an annular mounting groove (18) is formed on the outer side of the sealing ring (17), and a deformable cleaning ring (19) is fixedly arranged in the mounting groove (18).

5. A liquid dust suppressant quantitative addition device according to claim 4, characterized in that: The interior of the sealing ring (17) is connected to an integral diaphragm (20), and the interior of the sealing ring (17) forms a sealing cavity (21) and a cleaning cavity (22) through the diaphragm (20), and the interior of the sealing cavity (21) and the interior of the cleaning cavity (22) are both filled with liquid. The structures of the two sealing rings (17) in the two sealing grooves (14) are basically the same, except that the cleaning cavity (22) and the sealing cavity (21) in the sealing ring (17) at one end close to the water retaining frame (25) are both provided with an integral flexible sleeve (23), while the sealing ring (17) at one end away from the water retaining frame (25) has only the sealing cavity (21). 1), a flexible sleeve (23) is arranged in the cleaning chamber (22), while the flexible sleeve (23) is not arranged in the cleaning chamber (22); a plurality of connecting rods (24) are fixedly arranged on the diaphragm (20), the connecting rods (24) and the diaphragms (20) in the two sealing rings (17) are fixedly arranged, and the connecting rods (24) and the rod grooves (15), the connecting grooves (16) and the flexible sleeve (23) are all movably matched; a water retaining frame (25) is arranged on the outer side of the cylinder (5), the connecting rods (24) and the water retaining frame (25) are fixedly arranged, and a reset spring (26) is surrounded on the connecting rod (24), and the reset spring (26) is located between the water retaining frame (25) and the cylinder (5).

6. A liquid dust suppressant quantitative addition device according to claim 5, characterized in that: The wall thickness above the sealing cavity (21) is smaller than the wall thickness of the other side walls, and the wall thickness above the cleaning cavity (22) is smaller than the wall thickness of the other side walls.

7. A liquid dust suppressant quantitative addition device according to claim 5, characterized in that: The water retaining frame (25) is provided with a stirring member, which comprises a rotating shaft (35) and a plurality of paddles (27), wherein the rotating shaft (35) is rotatably arranged at the center of the water retaining frame (25), and the plurality of paddles (27) are fixedly arranged along the circumference of the rotating shaft (35).

8. A liquid dust suppressant quantitative addition device according to claim 1, characterized in that: An upper retaining ring (28) and a lower mounting frame (29) are fixedly arranged inside the adding pipe (2); the upper retaining ring (28) is located above the lower mounting frame (29); and a sealing cleaning mechanism is arranged on the lower mounting frame (29).

9. A liquid dust suppressant quantitative addition device according to claim 8, characterized in that: The sealing and cleaning mechanism comprises a middle rod (30), a middle spring (31), an upper sealing block (32), a strip block (33) and a lower cleaning ring (34), wherein the middle rod (30) is slidably arranged in a rod hole on a lower mounting frame (29), the middle spring (31) surrounds the middle rod (30), the upper sealing block (32) is fixedly arranged at the top end of the middle rod (30) and is sealingly matched with an upper retaining ring (28), the strip block (33) is fixedly arranged at the bottom end of the middle rod (30), the lower cleaning ring (34) is fixedly arranged on the strip block (33), and the middle spring (31) is located between the upper sealing block (32) and the lower cleaning ring (34).

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