Waste gas collection buffer tank for chemical production

Abstract

The utility model provides a waste gas collection buffer tank for chemical production, which comprises a main tank body and a conveying main tank body, the side wall of the lower part of the main tank body is fixedly connected with a gas inlet pipe orifice, a coil pipe is arranged in the main tank body, one end of the coil pipe is sealed, the other end of the coil pipe is connected with the gas inlet pipe orifice, the side wall of the coil pipe is provided with a plurality of through holes, and the through holes are communicated with the main tank body. An auxiliary tank body is arranged on one side of the main tank body, a piston is arranged in the auxiliary tank body in a sliding mode, a spring is arranged at the upper end of the piston, the upper end of the spring abuts against the inner wall of the upper end of the auxiliary tank body, the lower end of the auxiliary tank body is fixedly connected with a communicating pipe, and the other end of the communicating pipe is fixedly connected with the lower end of the main tank body. The device is provided with the auxiliary tank body, so that the buffering effect of waste gas collection can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of buffer tanks, and particularly to an exhaust gas collection buffer tank for chemical production. Background Art

[0002] During the chemical production process, toxic and harmful gases will inevitably be generated. Such gases cannot be directly discharged into the atmosphere. If they can be recycled, they will be recycled and treated. If they cannot be recycled and treated, they are exhaust gases that need to be purified.

[0003] After the generated exhaust gas is collected, it will be sent to the next link for centralized purification treatment, such as absorption method, adsorption method, thermal decomposition method, incineration and catalytic combustion method, condensation recovery method, UV ultraviolet method, membrane separation method, multiphase catalytic oxidation technology, etc. To ensure the efficient and stable purification treatment in the next link, it is necessary to ensure the normal pressure of the input exhaust gas and avoid the pressure safety of the exhaust gas collection pipeline. Therefore, a buffer tank is provided to ensure the pressure stability of the entire pipeline system.

[0004] The existing buffer tanks have a relatively simple structure, basically providing a certain volume and relying on the compressibility of the gas for buffering. However, liquid will be generated in the buffer tank, reducing the volume of the buffer tank body, that is, reducing the buffering effect. At the same time, when the liquid is drained away, there is a chance of escape, causing harm. Summary of the Invention

[0005] To solve the above problems, the present invention discloses an exhaust gas collection buffer tank for chemical production, including a main tank body. A gas inlet is fixedly connected to the lower side wall of the main tank body. A coil pipe is arranged inside the main tank body. One end of the coil pipe is sealed, and the other end is connected to the gas inlet. A number of through holes are arranged on the side wall of the coil pipe. By arranging the coil pipe and a number of through holes on the coil pipe, the fed exhaust gas can be evenly diffused to reach the inside of the main tank body.

[0006] A secondary tank body is arranged on one side of the main tank body. A piston is slidably arranged inside the secondary tank body. A spring is arranged at the upper end of the piston. The upper end of the spring abuts against the upper inner wall of the secondary tank body. A connecting pipe is fixedly connected to the lower end of the secondary tank body. The other end of the connecting pipe is fixedly connected to the lower end of the main tank body. The secondary tank body is equivalent to increasing the volume of the main tank body, increasing the buffering space. At the same time, the setting of the piston and the spring can automatically allocate the buffering volume of the secondary tank body according to the internal pressure of the main tank body, ensuring the normal pressure output by the main tank body to a certain extent.

[0007] Preferably, the coil pipe is bent in a spiral manner, and a sponge sleeve is wrapped outside the coil pipe. The purpose of setting the sponge sleeve is to further reduce the flow rate of the exhaust gas input into the main tank body, and intercept the fixed substances in the exhaust gas and the substances liquefied after entering the main tank body. The generated liquid falls to the bottom of the main tank body for temporary storage.

[0008] Furthermore, the liquid will enter the auxiliary tank 4 through the connecting pipe for temporary storage.

[0009] Preferably, a pressure balance pipe is fixedly connected to the upper end of the auxiliary tank body, the pressure balance pipe is connected to the chamber where the spring is located, and an electric control valve is fixedly connected to the pressure balance pipe. Under normal circumstances, the pressure balance pipe is in a closed state, and harmful substances in the exhaust gas are prevented from passing through the piston and directly entering the air as much as possible. At the same time, the spring is in an open state, and the air pressure in the spring is consistent with the external atmospheric pressure. When the device is working, the main tank body is operating normally, and under normal pressure changes, the pressure above and below the piston is maintained as much as possible, that is, when the pressure balance pipe is connected to the outside world, the piston can also slide up and down to provide additional buffer volume for the main tank body. If there is a sudden pressure change in the main tank body, it is necessary to immediately open the electric control valve to keep the cavity above the piston consistent with the external air pressure, that is, the piston slides upward quickly to provide more additional buffer volume to solve the problem of sudden pressure change in the main tank body.

[0010] Preferably, the connecting pipe is provided with a liquid discharge port, and the bottom of the main tank is provided with a float valve. The purpose of the float valve is to send the liquid produced by the main tank into the auxiliary tank. At this time, the auxiliary tank only serves as a storage tank for the liquid to avoid the accumulation of liquid causing the volume of the main tank to decrease.

[0011] Preferably, the float valve includes a counterweight, the upper end of the counterweight is fixedly connected to a connecting rod, the upper end of the connecting rod is fixedly connected to a plug, the upper end of the plug is fixedly connected to an airbag float, an airway is provided inside the connecting rod, and the airway is connected to the airbag float. The airbag float is inflated through the airway, and this operation is performed after the float valve is installed. When the main tank contains a sufficient amount of liquid, the airbag float provides a benefit, so that the plug and the tank body at the lower end of the main tank are separated, so that the liquid is pressed into the auxiliary tank under the air pressure of the main tank. If the internal air pressure of the main tank is not enough, the liquid can be pressed into the auxiliary tank as much as possible by opening the electric control valve and the pressure difference between the inside and the outside.

[0012] Preferably, the float valve further comprises a threaded sleeve, and the threaded sleeve is threadedly connected to the inner wall of the pipe opening arranged at the lower end of the main tank body, a cross bar is fixedly connected to the inside of the threaded sleeve, and the connecting rod passes through the cross bar. The threaded sleeve is used to fix the float valve to the pipe opening at the lower end of the main tank body.

[0013] Preferably, a support is provided below the main tank body and the auxiliary tank body, and an exhaust pipe opening is provided at the upper end of the main tank body, through which the waste gas enters the next treatment link.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. A secondary tank is provided on one side of the main tank to provide additional volume for the main tank. At the same time, a spring and a piston are provided inside the secondary tank, and the provided volume can be automatically adjusted to ensure the buffering of the main tank and the normal air pressure of the exhaust gas output.

[0016] 2. A float valve is provided. Through the float valve, the generated liquid can be sent into the secondary tank, thereby ensuring that the buffering volume in the main tank will not decrease and ensuring the buffering effect. At the same time, the provided float valve can prevent the exhaust gas from leaking from the liquid outlet when the liquid is drained away. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 is a sectional schematic diagram of the present invention;

[0019] Figure 3 is a schematic diagram of the bottom of the coil pipe of the present invention;

[0020] Figure 4 is a three-dimensional schematic diagram of the float valve of the present invention.

[0021] LIST OF REFERENCE NUMERALS:

[0022] 1. Bracket; 2. Inlet pipe port; 3. Main tank; 4. Secondary tank; 5. Pressure balance pipe; 6. Exhaust pipe port; 7. Connecting pipe; 8. Drainage port; 9. Float valve; 10. Coil pipe; 11. Sponge sleeve; 12. Spring; 13. Piston; 14. Through hole;

[0023] 91. Counterweight; 92. Connecting rod; 93. Cross bar; 94. Threaded sleeve; 95. Plug; 96. Airbag float. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be further illustrated below in conjunction with the drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0025] Such as Figures 1 to 4As shown in the figure, an exhaust gas collection and buffer tank for chemical production includes a main tank body 3. The main tank body 3 is cylindrical, and both the upper and lower ends are hemispherical. A gas inlet pipe 2 is fixedly connected to the lower side wall of the main tank body 3 for sending the collected exhaust gas into the main tank body 3. A coil pipe 10 is arranged inside the main tank body 3. One end of the coil pipe 10 is sealed, and the other end is connected to the gas inlet pipe 2. A number of through holes 14 are arranged on the side wall of the coil pipe 10. That is, the incoming exhaust gas enters the coil pipe 10. At the same time, due to the arrangement of the through holes 14, the exhaust gas can be evenly sent into the interior of the main tank body 3.

[0026] A secondary tank body 4 is arranged on one side of the main tank body 3. The secondary tank body 4 increases the extra volume for the main tank body 3, thereby improving the buffering effect. A piston 13 is slidably arranged inside the secondary tank body 4. The piston 13 divides the secondary tank body 4 into upper and lower chambers. A spring 12 is arranged at the upper end of the piston 13. The upper end of the spring 12 abuts against the inner wall of the upper end of the secondary tank body 4. The setting of the spring 12 keeps the upper volume in a relatively large state. A connecting pipe 7 is fixedly connected to the lower end of the secondary tank body 4. The other end of the connecting pipe 7 is fixedly connected to the lower end of the main tank body 3. That is, the main tank body 3 and the secondary tank body 4 are connected through the connecting pipe 7. At this time, the chamber below the piston 13 is the increased volume of the main tank body. At the same time, the piston 13 slides under the internal pressure of the main tank body 3. That is, the volume of the lower chamber can be automatically adjusted according to the internal pressure of the main tank body 3.

[0027] The coil pipe 10 is bent in a spiral manner so that the relatively long coil pipe 10 can be distributed at the same horizontal height. A sponge sleeve 11 is wrapped outside the coil pipe 10. The sponge sleeve 11 can not only intercept the solid particles and liquefied substances of the exhaust gas as much as possible, but also reduce the speed of the exhaust gas entering the main tank body 3.

[0028] A pressure balance pipe 5 is fixedly connected to the upper end of the secondary tank body 4. The pressure balance pipe 5 is connected to the external atmosphere. The pressure balance pipe 5 is connected to the chamber where the spring 12 is located. An electric control valve is fixedly connected to the pressure balance pipe 5. Before the device is used, the air pressure in the chamber where the spring 12 is located is the same as the atmospheric pressure. When in use, the pressure balance pipe 5 is kept in a closed state. At this time, the set air pressure in the chamber where the spring 12 is located is one atmospheric pressure. The pressure can be changed according to the actual use needs. During normal operation, the piston 13 can also slide up and down a certain distance in the secondary tank body 4 to achieve dynamic air pressure balance. When the air pressure in the main tank body 3 suddenly increases, the electric control valve is opened, so that the chamber where the spring 12 is located is connected to the atmosphere. At this time, the piston 13 can slide up to the maximum stroke to solve the problem of sudden increase in air pressure in the main tank body 3.

[0029] A drain port 8 is provided on the upper part of the connecting pipe 7. When the liquid content in the main tank body 3 and the auxiliary tank body 4 is relatively high, it can be drained through the drain port 8. A float valve 9 is provided at the bottom of the main tank body 3. The function of the float valve 9 is that when the main tank body 3 contains sufficient liquid, the float valve 9 will be opened. At this time, under the internal gas of the main tank body 3, the liquid can be pressed into the auxiliary tank body 3. Further, during the process of oil transfer, the electric control valve can be opened to increase the pressure difference between the main tank body 3 and the auxiliary tank body 4, thereby improving the oil transfer effect. Therefore, it can be understood here that the auxiliary tank body 4 is provided for liquid storage, so that the generated liquid will not affect the buffering effect of the main tank body 3. Also, during the drainage process, due to the setting of the float valve 9, the gas in the main tank body 3 will not leak from the drain port 8, and the liquid in the auxiliary tank body 4 will be discharged as much as possible under the action of the spring 12 and the piston 13.

[0030] The float valve 9 includes a counterweight 91. The upper end of the counterweight 91 is fixedly connected with a connecting rod 92. The upper end of the connecting rod 92 is fixedly connected with a plug 95. The upper end of the plug 95 is fixedly connected with an airbag float 96. Before the installation of the float valve 9, the airbag float 96 is not inflated. An air passage is provided inside the connecting rod 92, and the air passage is communicated with the airbag float 96. After installation, gas is filled into the airbag float 96 through the air passage, or chemical substances that can react to generate gas, such as sodium bicarbonate and acetic acid, are provided in the airbag float 96.

[0031] The float valve 9 further includes a threaded sleeve 94, and the threaded sleeve 94 is in threaded connection with the inner wall of the pipe orifice provided at the lower end of the main tank body 3. That is, through the fixed connection between the threaded sleeve 94 and the lower pipe orifice of the main tank body 3, the fixed connection of the float valve 9 is realized. A cross bar 93 is fixedly connected inside the threaded sleeve 94, and the connecting rod 92 passes through the cross bar 93. That is, the cross bar 93 is used for the support and fixation of the connecting rod 92.

[0032] A bracket 1 is provided below the main tank body 3 and the auxiliary tank body 4. The bracket 1 includes a vertical rod member and a horizontal rod member, which are integrally formed by welding. At the same time, the main tank body 3 and the auxiliary tank body 4 are also fixedly connected by rod members. An exhaust pipe orifice 6 is provided at the upper end of the main tank body 3. The waste gas in the main tank body 3 is sent to the next link for treatment through the exhaust pipe orifice 6.

[0033] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions formed by any combination of the above technical features.

Claims

1. An exhaust gas collection buffer tank for chemical production, characterized in that, It includes a main tank body (3). An air inlet pipe opening (2) is fixedly connected to the lower side wall of the main tank body (3). A coil pipe (10) is arranged inside the main tank body (3). One end of the coil pipe (10) is sealed, and the other end is connected to the air inlet pipe opening (2). A number of through holes (14) are arranged on the side wall of the coil pipe (10). A secondary tank body (4) is arranged on one side of the main tank body (3). A piston (13) is slidably arranged inside the secondary tank body (4). A spring (12) is arranged at the upper end of the piston (13). The upper end of the spring (12) abuts against the inner wall of the upper end of the secondary tank body (4). A communicating pipe (7) is fixedly connected to the lower end of the secondary tank body (4). The other end of the communicating pipe (7) is fixedly connected to the lower end of the main tank body (3).

2. The waste gas collection buffer tank for chemical production according to claim 1, characterized in that: The coil pipe (10) is bent in a spiral manner. A sponge sleeve (11) is arranged to wrap the outside of the coil pipe (10).

3. The waste gas collection buffer tank for chemical production according to claim 1, characterized in that: A pressure balance pipe (5) is fixedly connected to the upper end of the secondary tank body (4). The pressure balance pipe (5) communicates with the chamber where the spring (12) is located. An electric control valve is fixedly connected to the pressure balance pipe (5).

4. An exhaust gas collection buffer tank for chemical production according to claim 1, characterized in that: A liquid discharge port (8) is arranged on the communicating pipe (7). A floating valve (9) is arranged at the bottom of the main tank body (3).

5. The exhaust gas collection buffer tank for chemical production according to claim 4, characterized in that: The floating valve (9) includes a counterweight (91). A connecting rod (92) is fixedly connected to the upper end of the counterweight (91). A plug (95) is fixedly connected to the upper end of the connecting rod (92). An airbag float (96) is fixedly connected to the upper end of the plug (95). An air passage is arranged inside the connecting rod (92), and the air passage communicates with the airbag float (96).

6. The waste gas collection buffer tank for chemical production according to claim 5, characterized in that: The floating valve (9) further includes a threaded sleeve (94), and the threaded sleeve (94) is in threaded connection with the inner wall of the pipe opening arranged at the lower end of the main tank body (3). A cross bar (93) is fixedly connected to the inside of the threaded sleeve (94). The connecting rod (92) passes through the cross bar (93).

7. An exhaust gas collection buffer tank for chemical production according to claim 1, characterized in that: A bracket (1) is arranged below the main tank body (3) and the secondary tank body (4). An exhaust pipe opening (6) is arranged at the upper end of the main tank body (3).

Images