PP spray tower with automatic pressure reduction function

Abstract

The utility model relates to the technical field of spray towers, and discloses a PP (polypropylene) spray tower with an automatic pressure reduction function, which comprises a tower body, an observation port is fixedly connected outside the tower body, a circulating component is mounted in the tower body, and a pressure reduction component is mounted in the tower body; and the circulating assembly comprises a water tank, the exterior of the water tank is fixedly connected with a circulating water pump, the output end of the circulating water pump is fixedly connected with a conveying pipe, the interior of the conveying pipe is rotationally connected with a control valve, the interior of the conveying pipe is fixedly connected with a spraying pipe, and the interior of the spraying pipe is fixedly connected with a spraying head. According to the waste gas purification device, liquid in the water tank is pumped out through the circulating water pump, fine liquid drops are sprayed out through the spray head, and the liquid is uniformly distributed by matching with the grating plate in the spray pipe, so that waste gas is in full contact with the liquid, physical and chemical reactions between pollutants in the waste gas and the liquid are effectively promoted, and the waste gas purification efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spray tower technical field especially, it relates to a kind of PP spray tower with automatic pressure reducing function. BACKGROUND

[0002] PP spray tower is usually applied to factory production, when using, first exhaust pipe is connected at the air inlet of spray tower, then exhaust gas is discharged into spray tower by exhaust pipe, exhaust gas enters spray tower first by filter zone to filter, then by spray zone to spray, then by dehydration zone to dehydrate, finally by exhaust port to discharge.

[0003] Traditional spray tower often lacks effective automatic pressure reducing function, in the running process, the pressure in tower is prone to unstable situation, when pressure is too high, it is prone to cause tower structure damage, such as tower deformation, internal pipe rupture etc., to further affect the normal progress of waste gas treatment, even cause equipment failure downtime, and it is also difficult to ensure that waste gas treatment process can be always in stable pressure environment, so that processing efficiency and stability are somewhat lacking, when the feeding amount of waste gas is larger, too much waste gas influx can cause the pressure in tower to be too large, can cause great oppression to the wall of PP spray tower, serious time can cause PP spray tower to fail, therefore, a kind of PP spray tower with automatic pressure reducing function is proposed to solve the above problems. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a kind of PP spray tower with automatic pressure reducing function, to improve the problem of lacking effective automatic pressure reducing function in prior art, too much waste gas can cause failure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of PP spray tower with automatic pressure reducing function, including tower body, the outside of the tower body is fixedly connected with observation port, the inside of the tower body is installed with circulating assembly, the inside of the tower body is installed with pressure reducing assembly;

[0007] The circulating assembly includes water tank, the outside of the water tank is fixedly connected with circulating water pump, the output end of the circulating water pump is fixedly connected with conveying pipe, the inside of the conveying pipe is rotatably connected with control valve, the inside of the conveying pipe is fixedly connected with spray pipe, the inside of the spray pipe is fixedly connected with spray head;

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

[0009] The pressure reducing assembly comprises a connecting pipe installed inside the tower body, a fixed block fixedly connected outside the connecting pipe, a fixed rod fixedly connected inside the fixed block, a sealing ring sleeved outside the fixed rod, a sealing cover slidably connected outside the connecting pipe, a sealing ring fixedly connected outside the connecting pipe, and a pressure reducing valve installed outside the tower body;

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

[0011] The end of the fixed rod is fixedly connected with a protective plate, and the outside of the sealing cover is fixedly connected with a connecting block.

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

[0013] The outside of the spraying pipe is fixedly connected with a grating plate, and the grating plate is fixedly connected inside the tower body.

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

[0015] The outside of the tower body is fixedly connected with an air inlet pipe, the end of the air inlet pipe is fixedly connected with an air outlet pipe, and the middle of the air outlet pipe is provided with an air outlet hole.

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

[0017] The inside of the tower body is fixedly connected with a demisting plate, and the top of the tower body is provided with a vent hole.

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

[0019] The outside of the air inlet pipe is fixedly connected with a bolt, and the inside of the bolt is rotatably connected with a protective ring.

[0020] As a further description of the above technical solution:

[0021] The outside of the water tank is fixedly connected with a drain pipe, the inside of the drain pipe is rotatably connected with a drain valve, the inside of the tower body is fixedly connected with a water inlet pipe, and the other end of the water inlet pipe is fixedly connected inside the water tank.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1. The utility model discloses a kind of PP spray towers with automatic pressure reduction function, comprising tower body, conveying pipe, control valve, circulating water pump, drain pipe, drain valve, water tank, air inlet pipe, observation port, air vent, pressure reducing valve, water inlet pipe, fixed rod, sealing cover, connecting block, sealing ring, fixed block, connecting pipe, spring, protection plate, spray pipe, nozzle, bolt, protection ring, exhaust hole, exhaust pipe, grid plate and demister plate.

[0024] 2. The utility model discloses a kind of PP spray towers with automatic pressure reduction function, comprising tower body, conveying pipe, control valve, circulating water pump, drain pipe, drain valve, water tank, air inlet pipe, observation port, air vent, pressure reducing valve, water inlet pipe, fixed rod, sealing cover, connecting block, sealing ring, fixed block, connecting pipe, spring, protection plate, spray pipe, nozzle, bolt, protection ring, exhaust hole, exhaust pipe, grid plate and demister plate. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a kind of PP spray tower with automatic pressure reduction function proposed in the utility model, and its structure schematic diagram is shown in the figure.

[0026] Figure 2 It is a kind of PP spray tower with automatic pressure reduction function proposed in the utility model, and its structure schematic diagram is shown in the figure.

[0027] Figure 3 It is a kind of PP spray tower with automatic pressure reduction function proposed in the utility model, and its structure schematic diagram is shown in the figure.

[0028] Figure 4 It is a kind of PP spray tower with automatic pressure reduction function proposed in the utility model, and its structure schematic diagram is shown in the figure.

[0029] LEGEND:

[0030] 1, tower body;2, conveying pipe;3, control valve;4, circulating water pump;5, drain pipe;6, drain valve;7, water tank;8, air inlet pipe;9, observation port;10, air vent;11, pressure reducing valve;12, water inlet pipe;13, fixed rod;14, sealing cover;15, connecting block;16, sealing ring;17, fixed block;18, connecting pipe;19, spring;20, protection plate;21, spray pipe;22, nozzle;23, bolt;24, protection ring;25, exhaust hole;26, exhaust pipe;27, grid plate;28, demister plate. DETAILED DESCRIPTION

[0031] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] With reference to Figure 1 , Figure 2 and Figure 4 , the present application provides an embodiment: a PP spray tower with automatic pressure reduction function, comprising a tower body 1, an observation port 9 is fixedly connected outside the tower body 1, a circulating assembly is installed inside the tower body 1, and a pressure reduction assembly is installed inside the tower body 1; the circulating assembly comprises a water tank 7, a circulating water pump 4 is fixedly connected outside the water tank 7, a conveying pipe 2 is fixedly connected to the output end of the circulating water pump 4, a control valve 3 is rotatably connected inside the conveying pipe 2, and the circulating water pump 4 is started to suck the liquid in the water tank 7 into the water pump, and then the extracted liquid is conveyed from the output end of the water pump through the fixedly connected conveying pipe 2. The conveying pipe 2 provides a channel for the liquid to flow to the spray pipe 21, ensuring that the liquid can continuously and stably flow to the subsequent link, the flow of the liquid is controlled by the control valve 3, the conveying pipe 2 is fixedly connected with the spray pipe 21 inside, the spray pipe 21 is fixedly connected with the spray head 22 inside, the liquid reaches the spray pipe 21 fixedly connected inside the conveying pipe 2, and the spray pipe 21 plays a role of further distributing the liquid to each spray head 22. When the liquid enters the spray head 22, the liquid will be atomized into fine droplets under the action of the spray head 22 and sprayed out. These small droplets can greatly increase the contact area of the liquid and the waste gas, and are more conducive to physical adsorption, chemical reaction, etc. between the pollutants in the waste gas and the liquid, so as to realize the purification treatment of the waste gas. The outer side of the spray pipe 21 is fixedly connected with a grating plate 27, the grating plate 27 can make the liquid more evenly spread in the tower, avoid the situation that the local liquid is sprayed too much or too little, ensure that the waste gas can fully contact with the uniformly distributed liquid on the entire cross section of the tower body 1, further improve the efficiency and effect of waste gas treatment, make the spray tower can stably and efficiently purify the waste gas, and the grating plate 27 is fixedly connected inside the tower body 1. The outer side of the water tank 7 is fixedly connected with a drain pipe 5, the inner side of the drain pipe 5 is rotatably connected with a drain valve 6, the inner side of the tower body 1 is fixedly connected with a water inlet pipe 12, the other end of the water inlet pipe 12 is fixedly connected inside the water tank 7, and the drain valve 6 is rotated to drain the sewage through the drain pipe 5. The water inlet pipe 12 in the tower body 1 can supplement fresh liquid to the water tank 7 when needed, so as to maintain the normal operation of the spray system.

[0033] With reference to Figure 1 - Figure 3, the pressure relief assembly comprises a connecting pipe 18 installed inside the tower body 1, a fixed block 17 fixedly connected to the outer portion of the connecting pipe 18, a fixed rod 13 fixedly connected to the inner portion of the fixed block 17, the fixed rod 13 providing a guide for the sliding of the sealing cover 14, ensuring that the sealing cover 14 can smoothly slide in a fixed direction, a sealing ring 16 sleeved on the outer portion of the fixed rod 13, the sealing cover 14 being slidably connected to the outer portion of the connecting pipe 18, the sealing ring 16 being fixedly connected to the outer portion of the connecting pipe 18, the sealing cover 14 being tightly fitted at the corresponding position of the connecting pipe 18 under the action of the spring 19, the outer sealing ring 16 ensuring good sealing between the sealing cover 14 and the connecting pipe 18, at this time, the passage of the connecting pipe 18 is in a closed state, and gas cannot escape through this passage, when the pressure in the tower increases and exceeds the set value, the gas in the tower will generate an outward thrust on the sealing cover 14, the thrust being sufficient to overcome the force resisting the movement of the sealing cover 14, such as the spring force of the spring 19, so that the sealing cover 14 starts to slide along the outer portion of the connecting pipe 18. During the sliding process, the passage of the connecting pipe 18 originally closed by the sealing cover 14 is opened, and part of the gas can be discharged along the connecting pipe 18 to the outside of the tower, thereby achieving the purpose of preliminarily reducing the pressure in the tower. The outer portion of the tower body 1 is provided with a pressure relief valve 11, which will also automatically adjust the opening degree according to the pressure in the tower, further accurately controlling the pressure in the tower to ensure that it is within a safe and stable range. The end portion of the fixed rod 13 is fixedly connected with a protective plate 20, the protective plate 20 being fixed to the end portion of the fixed rod 13, playing a certain protective and limiting role in the sliding range of the sealing cover 14, avoiding excessive sliding of the sealing cover 14 and other situations such as disengagement from the connecting pipe 18, the outer portion of the sealing cover 14 is fixedly connected with a connecting block 15, the connecting block 15 being fixed to the outer portion of the sealing cover 14, facilitating corresponding operation control of the sealing cover 14 during installation, debugging or maintenance operations. The outer portion of the tower body 1 is fixedly connected with an air inlet pipe 8, the end portion of the air inlet pipe 8 is fixedly connected with an exhaust pipe 26, the middle portion of the exhaust pipe 26 is provided with an exhaust hole 25, after the exhaust gas is discharged from the exhaust hole 25, the contact process with the liquid begins. In the initial stage of gas-liquid contact, uniformly distributed exhaust gas can better form convection with the liquid. The exhaust gas flows from bottom to top at a suitable flow rate and distribution state, and the liquid is sprayed from the top down after being sprayed from the spray head 22, and the two can be more fully mixed in the spray tower. The inner portion of the tower body 1 is fixedly connected with a demisting plate 28, after the exhaust gas contacts with the liquid, a large amount of small droplets will be formed, which will be discharged together with the purified gas. The main function of the demisting plate 28 is to intercept and separate these mist droplets. The demisting plate 28 usually has a special structure, the mist droplets will collide and gather on the surface of the demisting plate 28, and fall back to the liquid collection area at the bottom of the spray tower due to the action of gravity.Thus, the mist droplets can be effectively prevented from being taken out of the spray tower, so that the quality of the purified gas discharged from the spray tower is improved, the gas is drier and purer, and the corrosion and pollution of the subsequent exhaust pipe 26 or other equipment are avoided. The top of the tower body 1 is provided with a vent 10. The outer part of the air inlet pipe 8 is fixedly connected with a bolt 23, and the inner part of the bolt 23 is rotatably connected with a protective ring 24, so that the sealing between the air inlet pipe 8 and the tower body 1 is increased, external forces generated due to airflow impact, pipeline vibration and the like during the air inlet process are guaranteed to stabilize the position of the air inlet pipe 8, and thus the stable delivery of the exhaust gas to the inside of the spray tower is ensured.

[0034] Working principle: The exhaust gas enters the inside of the spray tower through the air inlet pipe 8. The exhaust pipe 26 at the end of the air inlet pipe 8 and the exhaust holes 25 formed therein help to uniformly disperse the exhaust gas to the bottom of the spray tower, so that the exhaust gas can be more fully contacted with the subsequent sprayed liquid, and the treatment effect is improved. When the pressure in the tower exceeds the set value, the sealing cover 14 is pushed to overcome the elastic force of the spring 19, so that the sealing cover 14 slides on the connecting pipe 18, thereby opening the passage of the connecting pipe 18, and part of the gas is discharged to the outside of the tower through the connecting pipe 18, thereby playing a role in preliminary pressure reduction. At the same time, the pressure relief valve 11 installed outside the tower body 1 also automatically adjusts the opening degree according to the pressure in the tower, so as to further accurately control the pressure in the tower and ensure that the pressure is within a safe and stable range. The liquid in the water tank 7 is pumped out by the circulating water pump 4, and the circulating water pump 4 provides power to deliver the liquid through the delivery pipe 2. The liquid is sprayed from the nozzles 22 of the spray pipe 21 in the form of fine droplets. The grid plate 27 in the spray pipe 21 plays a role in supporting and uniformly distributing the liquid, so as to ensure that the liquid is uniformly sprayed in the tower and fully contacted with the rising exhaust gas. In this process, the pollutants in the exhaust gas react with the liquid physically and chemically, so that the exhaust gas is purified. The liquid in the water tank 7 may need to be replaced due to absorption of pollutants in the exhaust gas or evaporation of water, etc. The drain valve 6 is rotated to discharge the sewage through the drain pipe 5. The water inlet pipe 12 in the inside of the tower body 1 can supplement fresh liquid to the water tank 7 when needed, so as to maintain the normal operation of the spraying system.

[0035] Finally, it should be noted that the above description is only a preferred embodiment 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, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A PP spray tower with automatic pressure reduction function, comprising a tower body (1), characterized in that: The outside of the tower body (1) is fixedly connected with an observation port (9), the inside of the tower body (1) is installed with a circulating assembly, and the inside of the tower body (1) is installed with a pressure reducing assembly. The circulating assembly comprises a water tank (7), the outside of the water tank (7) is fixedly connected with a circulating water pump (4), the output end of the circulating water pump (4) is fixedly connected with a conveying pipe (2), the inside of the conveying pipe (2) is rotatably connected with a control valve (3), the inside of the conveying pipe (2) is fixedly connected with a spraying pipe (21), and the inside of the spraying pipe (21) is fixedly connected with a spray head (22).

2. The PP spray tower with automatic pressure reduction function according to claim 1, characterized in that: The pressure reducing assembly comprises a connecting pipe (18), the connecting pipe (18) is installed in the inside of the tower body (1), the outside of the connecting pipe (18) is fixedly connected with a fixed block (17), the inside of the fixed block (17) is fixedly connected with a fixed rod (13), the outside of the fixed rod (13) is sleeved with a sealing ring (16), the outside of the connecting pipe (18) is slidably connected with a sealing cover (14), the outside of the connecting pipe (18) is fixedly connected with a sealing ring (16), and the outside of the tower body (1) is installed with a pressure reducing valve (11).

3. The PP spray tower with automatic pressure reduction function according to claim 2, characterized in that: The end of the fixed rod (13) is fixedly connected with a protective plate (20), and the outside of the sealing cover (14) is fixedly connected with a connecting block (15).

4. The PP spray tower with automatic pressure reduction function according to claim 1, characterized in that: The outside of the spraying pipe (21) is fixedly connected with a grating plate (27), and the grating plate (27) is fixedly connected in the inside of the tower body (1).

5. The PP spray tower with automatic pressure reduction function according to claim 1, characterized in that: The outside of the tower body (1) is fixedly connected with an air inlet pipe (8), the end of the air inlet pipe (8) is fixedly connected with an air outlet pipe (26), and the middle of the air outlet pipe (26) is provided with an air outlet hole (25).

6. The PP spray tower with automatic pressure reduction function according to claim 1, characterized in that: The inside of the tower body (1) is fixedly connected with a demisting plate (28), and the top of the tower body (1) is provided with a vent (10).

7. The PP spray tower with automatic pressure reduction function according to claim 5, characterized in that: The outside of the air inlet pipe (8) is fixedly connected with a bolt (23), and the inside of the bolt (23) is rotatably connected with a protective ring (24).

8. The PP spray tower with automatic pressure reduction function according to claim 1, characterized in that: The outside of the water tank (7) is fixedly connected with a drain pipe (5), the inside of the drain pipe (5) is rotatably connected with a drain valve (6), the inside of the tower body (1) is fixedly connected with a water inlet pipe (12), and the other end of the water inlet pipe (12) is fixedly connected in the inside of the water tank (7).

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