Spray tower for treating and purifying industrial smoke-containing waste gas

Abstract

The utility model relates to the technical field of spray towers, and discloses a spray tower for treating and purifying industrial smoke-containing waste gas, which comprises a tower body, a gas inlet pipe fixedly connected to the side wall of the tower body, an observation bin fixedly connected to the side wall of the tower body, an exhaust pipe fixedly connected to the top of the tower body, and a grating plate fixedly connected to the inside of the tower body, a water tank is arranged on the side wall of the tower body, a conveying pipe is fixedly connected to the upper surface of the water tank, a spraying head is fixedly connected to one end of the conveying pipe, a circulating assembly is arranged on the side wall of the tower body, a filtering assembly is arranged in an air inlet pipe, a flow guide plate is fixedly connected to the interior of the tower body, and a water inlet is formed in the upper surface of the water tank. According to the water circulation device, sprayed water flows into the filter box through the flow guide plate, the water is filtered through the filter plate, and then the water flow is pumped into the water inlet box through the water pump, so that the water circulation use effect is achieved, and the circulation effect of the device is improved through the structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spray tower technical field especially relates to a kind of for industrial smoke-containing waste gas treatment purification spray tower. BACKGROUND

[0002] With the rapid development of industry, the emission of industrial smoke-containing waste gas has caused serious threat to the environment and human health. In order to reduce the pollution of waste gas to the environment, various waste gas treatment technologies and equipment have emerged in an endless stream, among which the spray tower as a common and effective waste gas treatment equipment is widely used in industrial field. The spray tower makes the pollutants in the waste gas be absorbed, dissolved or reacted by fully contacting the liquid spray with the waste gas, so as to achieve the purpose of purifying the waste gas.

[0003] The conventional spray tower for industrial smoke-containing waste gas treatment and purification is generally composed of a tower body, a spraying system, a filler layer, a demister, a circulating water pump, a fan and other main components. Its working principle is that the fan introduces the industrial smoke-containing waste gas into the spray tower, and the waste gas passes through the filler layer during the ascending process in the tower. At this time, the circulating water pump sends the water in the water tank to the spraying system, and the water is uniformly sprayed on the upper part of the filler layer through the spray head to form fine water droplets. The waste gas and the water droplets are fully contacted in the filler layer, and the pollutants in the waste gas are absorbed or adsorbed by the water droplets, so as to realize the preliminary purification of the waste gas. The purified waste gas continues to rise, and after removing the water mist entrained therein by the demister, it is finally discharged into the atmosphere through the exhaust port. The water that has absorbed the pollutants falls into the water tank at the bottom of the tower, and after simple sedimentation, it is pumped again to the spraying system by the circulating water pump for recycling.

[0004] The conventional spray tower for industrial smoke-containing waste gas treatment and purification lacks effective filtering and purification mechanism for the circulation of spraying liquid, thereby reducing the absorption and reaction capacity of the spraying liquid to the waste gas, resulting in gradually poor waste gas treatment effect. Therefore, a spray tower for industrial smoke-containing waste gas treatment and purification is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a spray tower for industrial smoke-containing waste gas treatment and purification, which aims to improve the problem that the circulation of spraying liquid in the prior art lacks effective filtering and purification mechanism, thereby reducing the absorption and reaction capacity of the spraying liquid to the waste gas, resulting in gradually poor waste gas treatment effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A spray tower for industrial smoke-containing waste gas treatment and purification, comprising a tower body, an air inlet pipe fixedly connected to the side wall of the tower body, an observation bin fixedly connected to the side wall of the tower body, an air outlet pipe fixedly connected to the top of the tower body, a grid plate fixedly connected to the inside of the tower body, a water tank provided on the side wall of the tower body, a conveying pipe fixedly connected to the upper surface of the water tank, a spray head fixedly connected to one end of the conveying pipe, a circulating assembly provided on the side wall of the tower body, a filter assembly provided in the air inlet pipe, a flow guide plate fixedly connected to the inside of the tower body, a water inlet opening provided on the upper surface of the water tank, and a blowdown opening provided on the side wall of the water tank.

[0008] The circulating assembly comprises a filter box, a first connecting pipe fixedly connected to the side wall of the filter box, the first connecting pipe being fixedly connected to the inside of the tower body, a cover plate provided on the upper surface of the filter box, a filter plate provided in the filter box, a water pump provided on the side wall of the tower body, a second connecting pipe fixedly connected to the input end of the water pump, and a third connecting pipe fixedly connected to the output end of the water pump.

[0009] Further description of the above technical solution is as follows:

[0010] The filter assembly comprises an activated carbon net, the activated carbon net being slidably connected to the inside of the air inlet pipe, a fixed block fixedly connected to the side wall of the activated carbon net, and a fixed hole provided in the fixed block.

[0011] Further description of the above technical solution is as follows:

[0012] One end of the second connecting pipe is fixedly connected to the inside of the filter box, and one end of the third connecting pipe is fixedly connected to the inside of the water tank.

[0013] Further description of the above technical solution is as follows:

[0014] The upper surface of the water tank is fixedly connected to a motor, and the output end of the motor is fixedly connected to a stirring rod.

[0015] Further description of the above technical solution is as follows:

[0016] The side wall of the air inlet pipe is fixedly connected to a fixed shell, and a sliding rod is slidably connected to the inside of the fixed shell.

[0017] Further description of the above technical solution is as follows:

[0018] One end of the sliding rod is rotatably connected to a rotating block, and the other end of the sliding rod is fixedly connected to a clamping block.

[0019] Further description of the above technical solution is as follows:

[0020] The fixed ring is fixedly connected to the sliding rod side wall, and a spring is sleeved on the sliding rod side wall, one end of the spring is fixedly connected to the inside of the fixed shell, and the other end of the spring is fixedly connected to the side wall of the fixed ring.

[0021] As a further description of the above technical solution:

[0022] The side wall of the clamping block is slidably connected in the air inlet pipe and the fixed hole.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1. In the utility model, the water sprayed is flowed into the filter box through the deflector, filtered by the filter plate, and then pumped into the water tank, so as to realize the recycling of water, rotate the stirring rod by starting the motor, fully mix the absorbent and water, improve the treatment effect of waste gas, solve the problem of lack of effective filtering and purification mechanism for the recycling of spray liquid in the spray tower for treating and purifying industrial smoke-containing waste gas, reduce the absorption and reaction capacity of the spray liquid for waste gas, and gradually reduce the treatment effect of waste gas, and improve the recycling effect of the equipment through the above structure.

[0025] 2. In the utility model, the active carbon net is installed on the air inlet pipe to realize preliminary purification and reduce the load of the subsequent spray tower treatment, the sliding rod is pulled up by rotating the rotating block, the spring is contracted, the clamping block is separated from the fixed hole, and the active carbon net is replaced regularly. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of the spray tower for treating and purifying industrial smoke-containing waste gas is provided for the utility model;

[0027] Figure 2 A structure schematic view of the tower body inside the spray tower for treating and purifying industrial smoke-containing waste gas is provided for the utility model;

[0028] Figure 3 A structure schematic view of the filter box of the spray tower for treating and purifying industrial smoke-containing waste gas is provided for the utility model;

[0029] Figure 4 A structure schematic view of the water tank of the spray tower for treating and purifying industrial smoke-containing waste gas is provided for the utility model;

[0030] Figure 5 A structure schematic view of the active carbon net of the spray tower for treating and purifying industrial smoke-containing waste gas is provided for the utility model;

[0031] Figure 6The utility model provides a kind of fixed shell structure diagram for industrial smoke-containing waste gas treatment purification's spray tower.

[0032] Legend:

[0033] 1, tower body;2, inlet pipe;3, observation bin;4, exhaust pipe;5, grating;6, water tank;7, conveying pipe;8, spray head;9, guide plate;10, connecting pipe one;11, filter box;12, cover plate;13, water pump;14, connecting pipe two;15, connecting pipe three;16, filter plate;17, water inlet;18, motor;19, stirring rod;20, blow-off port;21, activated carbon screen;22, fixed block;23, fixed hole;24, fixed shell;25, sliding rod;26, rotating block;27, clamping block;28, fixed ring;29, spring. Specific embodiments

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides an embodiment: a kind of for industrial containing smoke exhaust gas treatment purification spray tower, including tower body 1, tower body 1 provides the closed space environment for exhaust gas treatment, tower body 1 side wall is fixedly connected with air inlet pipe 2, air inlet pipe 2 is the entrance channel of exhaust gas into spray tower, can guide industrial containing smoke exhaust gas to be smoothly conveyed from outside to the inside of tower body 1, tower body 1 side wall is fixedly connected with observation bin 3, observation bin 3 is convenient for operator to observe the working condition inside tower body 1 in real time, tower body 1 top is fixedly connected with exhaust pipe 4, exhaust pipe 4 is used to discharge the exhaust gas that reaches discharge standard after being purified to atmosphere, tower body 1 inside is fixedly connected with grating plate 5, grating plate 5 can play certain blocking and dispersing effect to the exhaust gas rising, tower body 1 side wall is provided with water tank 6, water tank 6 is used to store spray liquid, water tank 6 upper surface is fixedly connected with delivery pipe 7, delivery pipe 7 is as the connecting channel between water tank 6 and spray head 8, delivery pipe 7 one end is fixedly connected with spray head 8, spray head 8 is with the spray liquid that comes from delivery pipe 7 in mist form and sprays, tower body 1 side wall is provided with circulation assembly, the setting of circulation assembly can realize the recycling of spray liquid, circulation assembly includes filter box 11, filter box 11 side wall is fixedly connected with connecting pipe one 10, connecting pipe one 10 one end is fixedly connected in the inside of tower body 1, and connecting pipe one 10 is responsible for the spray liquid with impurity after being initially handled in tower body 1 and is drained to filter box 11.The upper surface of filter box 11 is provided with cover plate 12, cover plate 12 can prevent foreign matter from entering the inside of filter box 11, and also facilitate to maintain and overhaul the inside of filter box 11.Filter plate 16 is arranged in filter box 11, and filter plate 16 can effectively filter solid impurities, dust and the like in spray liquid, remove pollutants in spray liquid, so that the spray liquid after being filtered can meet the requirement of recycling.Tower body 1 side wall is provided with water pump 13, water pump 13 input end is fixedly connected with connecting pipe two 14, water pump 13 output end is fixedly connected with connecting pipe three 15, connecting pipe two 14 one end is fixedly connected in the inside of filter box 11, and connecting pipe three 15 one end is fixedly connected in the inside of water tank 6, air inlet pipe 2 is provided with filter assembly, filter assembly can filter the exhaust gas entering tower body 1 in advance, remove large particle impurities in exhaust gas, prevent its from causing damage or blockage to the components inside tower body 1, tower body 1 inside is fixedly connected with deflector 9, deflector 9 can guide the spray of spray liquid and flow into the inside of filter box 11, ensure that spray liquid can smoothly enter circulation system and be treated and reused.The upper surface of the water tank 6 is provided with a water inlet 17, which facilitates the replenishment of fresh spray liquid into the water tank 6. The side wall of the water tank 6 is provided with a sewage outlet 20, which is used to periodically discharge the accumulated sediments and impurities in the water tank 6, so as to ensure the cleanliness of the inside of the water tank 6. The upper surface of the water tank 6 is fixedly connected with a motor 18, and the output end of the motor 18 is fixedly connected with a stirring rod 19. The motor 18 drives the stirring rod 19 to rotate, and the stirring rod 19 can stir the spray liquid in the water tank 6, so that the added absorbent is fully mixed with water, thereby improving the absorption and treatment effect of the spray liquid on the pollutants in the exhaust gas, and ensuring that the exhaust gas can be more effectively purified and treated.

[0036] When the exhaust gas enters the inside of the tower body 1, the tower body 1 provides a relatively closed and stable space environment for the contact reaction of the exhaust gas and the spraying liquid, ensuring that the entire treatment process can be carried out in an orderly manner under controllable conditions, effectively preventing the overflow of the exhaust gas and the spraying liquid. By opening the valve, the spraying liquid inside the water tank 6 is extracted. The water tank 6 serves as a storage container for the spraying liquid, and its capacity can meet the continuous spraying needs of the spraying tower within a certain period of time. From the delivery pipe 7 to the spraying head 8, the spraying liquid in the water tank 6 can be smoothly delivered to the spraying head 8 with small resistance, ensuring the stability of the flow and pressure of the spraying liquid. When the spraying liquid is sprayed from the spraying head 8, it forms a mist or liquid column-shaped liquid flow. The mist-shaped spraying liquid can greatly increase the contact area with the exhaust gas, making the pollutants in the exhaust gas more easily contact and react with the spraying liquid; the liquid column-shaped spraying liquid has a certain impact force, which helps to break through some agglomerates in the exhaust gas, making the exhaust gas and the spraying liquid mix more fully. The exhaust gas flows from bottom to top in the tower body 1, and is in contact with the spraying liquid sprayed downward in a reverse direction. This reverse flow mode can fully utilize the concentration difference between the gas and liquid phases, strengthen the mass transfer process, and make the pollutants in the exhaust gas more efficiently transfer to the spraying liquid. When the exhaust gas and the spraying liquid pass through the filler layer on the grid plate 5, the filler makes the flow path of the gas and liquid become tortuous. The grid plate 5 provides a stable support structure for the filler, ensuring that the filler is fixed in position and evenly distributed in the tower body 1. The presence of the filler increases the contact area and contact time between them, and the mass transfer process between the gas and liquid in the filler layer is strengthened, so that the acidic gas in the exhaust gas contacts the alkaline spraying liquid on the surface of the filler, a neutralization reaction occurs, and the salt generated by the reaction dissolves in the spraying liquid, thereby achieving the removal of the acidic gas. This treatment method based on neutralization reaction can specifically remove acidic pollutants such as sulfur dioxide and nitrogen oxides in the exhaust gas, convert harmful acidic gases into harmless salt substances, and reduce the acidity and toxicity of the exhaust gas. Finally, the purified gas is discharged through the exhaust pipe 4. The diameter and height of the exhaust pipe 4 are designed to ensure that the purified gas is smoothly discharged from the tower body 1 and further reduces the residual pollutants in the gas during the discharge process, so that it meets the emission standard and is safely released into the atmospheric environment. The falling spraying liquid flows into the filter tank 11 through the guide plate 9. The guide plate 9 plays a precise guiding role, can effectively collect and guide the spraying liquid to the filter tank 11, and avoid the spraying liquid flowing randomly at the bottom of the tower body 1, causing liquid accumulation or poor backflow. Then the filter plate 16 filters it. The filter plate 16 can intercept solid impurities, undissolved particulate matter, and reaction-generated precipitates in the spraying liquid, preventing these impurities from re-entering the tower body 1 with the spraying liquid circulation and affecting the treatment effect or clogging the nozzle.The filtered water is then pumped into the water tank 6 again by the water pump 13. The water pump 13 has sufficient power and flow rate to overcome the pipeline resistance and liquid level difference, and can quickly and stably transport the water in the filter tank 11 back to the water tank 6, realizing the recycling effect of the spraying liquid, reducing the waste of water resources, reducing the operation cost, and maintaining the relative stability of the concentration and pH value of the spraying liquid, ensuring the sustainability and stability of the waste gas treatment effect.

[0037] With reference to Figure 5 and Figure 6 The filter assembly includes an activated carbon net 21 having strong adsorption performance, which is slidably connected to the inner wall of the air inlet pipe 2 and can effectively intercept harmful gas molecules and some small particle impurities in the waste gas, thereby preliminarily purifying the waste gas before entering the tower body 1. The activated carbon net 21 is fixedly connected with a fixed block 22 having a fixed hole 23 inside, which provides a connection site for the fixation of the activated carbon net 21 in the air inlet pipe 2, and the fixed hole 23 serves as a structure cooperating with the clamping block 27 for installation and positioning of the activated carbon net 21. The air inlet pipe 2 is fixedly connected with a fixed shell 24, which provides a stable installation base and sliding space for the sliding rod 25 slidably connected inside. The fixed shell 24 is slidably connected with a sliding rod 25, one end of which is rotatably connected with a rotating block 26, which facilitates manual operation by the operator to control the sliding of the sliding rod 25. The other end of the sliding rod 25 is fixedly connected with a clamping block 27, which is slidably connected inside the air inlet pipe 2 and can be clamped into the fixed hole 23. Through the clamping cooperation of the clamping block 27 and the fixed hole 23, the activated carbon net 21 is firmly fixed in the air inlet pipe 2, ensuring that the activated carbon net 21 will not displace or shake under the impact of waste gas. The sliding rod 25 is fixedly connected with a fixed ring 28, which provides an installation support point for a spring 29. The sliding rod 25 is sleeved with a spring 29, one end of which is fixedly connected inside the fixed shell 24, and the other end is fixedly connected to the side wall of the fixed ring 28. The spring 29 plays a role of resetting and pre-tightening.

[0038] In the use of the device for waste gas treatment, first of all, the waste gas through the intake pipe 2 into the tower body 1 inside. Intake pipe 2 as the waste gas into the spray tower channel, its pipe diameter and length are designed to make the waste gas into the tower 1 with the appropriate flow rate, both to ensure that the waste gas can smoothly into, also can not because of the flow rate too fast and affect the subsequent processing effect. When the waste gas through the activated carbon mesh 21 on the intake pipe 2, activated carbon mesh 21 by virtue of its rich pore structure plays a key role, organic pollutants molecules will be adsorbed in the activated carbon pore, these pores can be through the physical adsorption effect, effectively capture the organic pollutants in the waste gas, so as to realize the preliminary purification before the waste gas into the tower 1, reduce the pressure of subsequent processing link, improve the efficiency and effect of the whole waste gas treatment system. When long-term use needs to be disassembled and replaced activated carbon mesh 21, by rotating the rotating block 26, rotating block 26 as the operating components, its design is convenient for operators to force, so that it can easily with the slide rod 25 linkage. Rotating block 26 pull slide rod 25 up, slide rod 25 in the fixed shell 24 stable sliding, provides accurate displacement control for the subsequent block 27 off, so that the fixed ring 28 to the spring 29 extrusion shrinkage, fixed ring 28 as the spring 29 and slide rod 25 connection site, the movement of slide rod 25 to the spring 29, make the spring 29 deformation storage elastic potential. Further make the block 27 off fixed hole 23 inside, the close cooperation between the block 27 and fixed hole 23 in normal work to ensure the stable installation of activated carbon mesh 21, at this time the block 27 off, activated carbon mesh 21 lose fixed effect, by pulling outwards, can take out the activated carbon mesh 21, for replacement. This design makes the activated carbon mesh 21 disassembly and replacement process relatively simple, is conducive to timely maintenance and update activated carbon mesh 21, ensure that it always maintains good adsorption performance, maintain the sustained and efficient operation of the whole waste gas treatment system.

[0039] Working principle: when the device is used for waste gas treatment, first, the waste gas enters the tower body 1 through the inlet pipe 2, when the waste gas passes through the activated carbon net 21 on the inlet pipe 2, the organic pollutant molecules are adsorbed in the pores of the activated carbon, so that the preliminary purification is realized before the waste gas enters the tower body 1, when the waste gas enters the tower body 1, the spray liquid in the water tank 6 is pumped out from the conveying pipe 7 to the spray head 8 by opening the valve, when the spray liquid is sprayed from the spray head 8, the liquid flow in the form of mist or liquid column is formed, the waste gas flows upwards in the tower body 1, and is contacted with the spray liquid downwards, when the waste gas and the spray liquid pass through the filler layer on the grid plate 5, the filler makes the flow path of gas and liquid become tortuous, increases the contact area and contact time between them, the mass transfer process between gas and liquid is strengthened in the filler layer, the acidic gas in the waste gas is contacted with the alkaline spray liquid on the surface of the filler, the neutralization reaction is generated, the generated salt is dissolved in the spray liquid, so that the removal of the acidic gas is realized, finally, the purified gas is discharged through the exhaust pipe 4, and the falling spray liquid flows into the filter tank 11 through the guide plate 9, and is filtered by the filter plate 16, then the filtered water is pumped into the water tank 6 again through the water pump 13, so that the recycling effect is achieved, when the activated carbon net 21 needs to be disassembled and replaced for long-term use, the rotating block 26 is rotated, the sliding rod 25 is pulled upwards, so that the fixed ring 28 extrudes and contracts the spring 29, so that the clamping block 27 is separated from the fixed hole 23, at this time, the activated carbon net 21 loses the fixing effect, and the activated carbon net 21 can be taken out by pulling outward, and replaced.

[0040] Finally, it should be pointed out that: the above only for preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A spray tower for the treatment and purification of industrial fume-containing exhaust gases, comprising a tower body (1), characterized in that: The tower body (1) side wall is fixedly connected with the air inlet pipe (2), the tower body (1) side wall is fixedly connected with the observation bin (3), the tower body (1) top is fixedly connected with the exhaust pipe (4), the tower body (1) inside is fixedly connected with the grid plate (5), the tower body (1) side wall is provided with the water tank (6), the water tank (6) upper surface is fixedly connected with the conveying pipe (7), the conveying pipe (7) one end is fixedly connected with the shower head (8), the tower body (1) side wall is provided with the circulating assembly, the air inlet pipe (2) inside is provided with the filter assembly, the tower body (1) inside is fixedly connected with the flow guide plate (9), the water tank (6) upper surface is provided with the water inlet (17), the water tank (6) side wall is provided with the blowdown (20), The circulating assembly includes filter box (11), the filter box (11) side wall is fixedly connected with the connecting pipe one (10), the connecting pipe one (10) one end is fixedly connected in the tower body (1) inside, the filter box (11) upper surface is provided with the cover plate (12), the filter box (11) inside is provided with the filter plate (16), the tower body (1) side wall is provided with the water pump (13), the water pump (13) input end is fixedly connected with the connecting pipe two (14), the water pump (13) output end is fixedly connected with the connecting pipe three (15).

2. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 1, characterized in that: The filter assembly includes activated carbon net (21), the activated carbon net (21) side wall is slidably connected in the air inlet pipe (2) inside, the activated carbon net (21) side wall is fixedly connected with the fixed block (22), the fixed block (22) inside is provided with the fixed hole (23).

3. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 1, characterized in that: The connecting pipe two (14) one end is fixedly connected in the filter box (11) inside, the connecting pipe three (15) one end is fixedly connected in the water tank (6) inside.

4. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 1, characterized in that: The water tank (6) upper surface is fixedly connected with the motor (18), and the motor (18) output end is fixedly connected with the stirring rod (19).

5. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 2, characterized in that: The air inlet pipe (2) side wall is fixedly connected with the fixed shell (24), and the fixed shell (24) inside is slidably connected with the sliding rod (25).

6. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 5, characterized in that: The sliding rod (25) one end is rotatably connected with the rotating block (26), and the other end of the sliding rod (25) is fixedly connected with the clamping block (27).

7. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 6, characterized in that: The sliding rod (25) side wall is fixedly connected with the fixed ring (28), the sliding rod (25) side wall is provided with the spring (29), one end of the spring (29) is fixedly connected in the fixed shell (24), and the other end of the spring (29) is fixedly connected on the side wall of the fixed ring (28).

8. A spray tower for treating and cleaning industrial smoke-containing exhaust gas according to claim 6, characterized in that: The clamping block (27) side wall is slidably connected in the air inlet pipe (2) inside, and the clamping block (27) side wall is slidably connected in the fixed hole (23) inside.

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