Gas-liquid separator

Abstract

The utility model provides a gas-liquid separator. The gas-liquid separator comprises a separation tank, a liquid inlet pipe, a liquid outlet pipe, an exhaust pipe and a water baffle arranged in the separation tank, a liquid inlet is formed in one side wall of the separation tank, a liquid outlet is formed in the other side wall of the separation tank, the liquid inlet has the height h1, the liquid outlet has the height h2, h1 is larger than h2, and h2 is larger than h2. An exhaust port is formed in the top of the separation tank, the liquid inlet pipe is communicated with the liquid inlet, the liquid outlet pipe is communicated with the liquid outlet, the exhaust pipe is communicated with the exhaust port, and the water baffle is located below the exhaust port. According to the utility model, the brand new gas-liquid separator is designed, the filtrate discharged by the undercurrent filter press with the air blowing function is subjected to gas-liquid separation and then returns to the thickener, and gas is prevented from causing disturbance and muddy flow to the liquid level of the thickener.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a gas-liquid separator. Background Art

[0002] In the wastewater treatment industry, some toxic, hazardous, or odorous sludge requires the use of an underflow filter press to prevent gas from overflowing the filtrate and filling the filter press chamber. Furthermore, to facilitate sludge discharge and reduce the sludge's moisture content, air blowing is required after filtration and before discharge. This can cause large amounts of gas to escape from the underflow filter press's filtrate pipe, causing dramatic fluctuations in the filtrate level at the filtrate collection point (usually a thickener or sludge thickening tank for solid-liquid separation), and even causing the thickener to become turbid. Utility Model Content

[0003] The purpose of this utility model is to provide a gas-liquid separator to solve the above problems.

[0004] The technical solution of the utility model is: a gas-liquid separator, comprising a separation tank, a liquid inlet pipe, a liquid outlet pipe, an exhaust pipe and a water baffle arranged in the separation tank, a liquid inlet is provided on one side wall of the separation tank, a liquid outlet is provided on the other side wall of the separation tank, the liquid inlet has a height h1, the liquid outlet has a height h2, h1>h2, an exhaust port is provided on the top of the separation tank, the liquid inlet pipe is connected to the liquid inlet, the liquid outlet pipe is connected to the liquid outlet, the exhaust pipe is connected to the exhaust port, and the water baffle is located below the exhaust port.

[0005] In the above scheme, a new gas-liquid separator is designed, which separates the gas and liquid of the filtrate discharged from the undercurrent filter press with air blowing and returns it to the thickener to prevent the gas from disturbing the liquid level of the thickener and causing turbidity.

[0006] Preferably, the water baffle includes a horizontal plate and multiple connecting rods, the lower ends of the multiple connecting rods are connected to the periphery of the horizontal plate, and the upper ends of the multiple connecting rods are connected to the inner top wall of the separation tank, so that the horizontal plate is located below the exhaust port.

[0007] Preferably, the liquid outlet pipe forms a descending slope along the liquid outlet direction.

[0008] Preferably, the exhaust pipe includes a first pipe, a first bent pipe, a second pipe, a second bent pipe and a third pipe connected in sequence, the first pipe is vertically connected to the separation tank, and the third pipe and the first pipe are on the same side of the second pipe.

[0009] Preferably, the second pipe has an ascending slope along the exhaust direction.

[0010] Preferably, the diameter of the liquid inlet pipe gradually increases along the liquid inlet direction.

[0011] Preferably, a liquid outlet baffle is provided in the separation tank, and a gap is formed between the liquid outlet baffle and the bottom of the separation tank, and the liquid outlet is communicated with the interior of the separation tank through the gap.

[0012] Compared with the related art, the beneficial effects of the present invention are:

[0013] 1. Design a new gas-liquid separator, which separates the gas and liquid from the filtrate discharged from the air-blown undercurrent filter press and returns it to the thickener, preventing the gas from disturbing the liquid level in the thickener and causing turbidity;

[0014] 2. The liquid outlet pipe forms a descending slope along the liquid outlet direction, so that the accumulated gas in the liquid outlet pipe returns to the separation tank automatically, ensuring effective separation of gas and liquid;

[0015] 3. The exhaust pipe has a first pipe vertically connected to the separation tank, and the second pipe has an ascending slope along the exhaust direction, so that the condensed water in the exhaust pipe flows back to the separation tank under the action of gravity, ensuring effective separation of gas and liquid;

[0016] 4. A water baffle is installed at the exhaust port to prevent the splashing liquid in the separation tank from being discharged along with the air flow, thereby reducing the amount of liquid carried out by the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of the gas-liquid separator provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the gas-liquid separator provided by the utility model when in use.

[0019] In the accompanying drawings: 1. Gas-liquid separator; 11. Separation tank; 111. Liquid inlet; 112. Liquid outlet; 113. Exhaust port; 12. Liquid inlet pipe; 13. Liquid outlet pipe; 14. Exhaust pipe; 141. First pipe; 142. First elbow; 143. Second pipe; 144. Second elbow; 145. Third pipe; 15. Water retaining plate; 151. Horizontal plate; 152. Connecting rod; 2. Underflow filter press; 3. Thickener; 4. Underflow pump. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments of the present invention may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0021] like Figure 1As shown, a gas-liquid separator 1 provided in this embodiment includes a separation tank 11, a liquid inlet pipe 12, a liquid outlet pipe 13, an exhaust pipe 14, a water baffle 15 and a liquid outlet baffle.

[0022] Separator 11 is constructed of steel plate (stainless steel, fiberglass, etc.) based on the nature of the incoming liquid and primarily serves to separate gas and liquid. The size and shape of separator 11 are determined by the incoming liquid volume and the device's location. Separator 11 maintains a specific volume to prevent incomplete gas-liquid separation.

[0023] A liquid inlet 111 is provided on one side wall of the separation tank 11, and a liquid outlet 112 is provided on the other side wall of the separation tank 11. The liquid inlet 111 has a height h1, and the liquid outlet 112 has a height h2, where h1>h2. The liquid inlet 111 maintains a certain height distance from the bottom of the separation tank 11 to prevent the incoming material from disturbing the separated liquid in the bottom of the separation tank 11. The liquid outlet 112 is arranged as close to the bottom of the separation tank 11 as possible to drain the separated liquid in the bottom of the separation tank 11 as much as possible. The liquid inlet pipe 12 is connected to the liquid inlet 111, and the liquid outlet pipe 13 is connected to the liquid outlet 112.

[0024] The top of the separation tank 11 is provided with an exhaust port 113 for facilitating gas discharge, and the exhaust pipe 14 is connected to the exhaust port 113 .

[0025] The size of the liquid inlet pipe 12 is selected based on the amount of liquid being fed. The diameter of the liquid inlet pipe 12 gradually increases along the direction of liquid inlet, with the end with the largest diameter connected to the liquid inlet 111. A 45° slope is provided at the inlet end (liquid inlet 111) of the separation tank 11 to allow the incoming liquid to flow into the separation tank 11 through this slope, reducing disturbances caused by the free fall of the liquid at the bottom of the separation tank 11.

[0026] The liquid outlet pipe 13 is formed with a descending slope along the liquid outlet direction, so that the accumulated gas in the liquid outlet pipe 13 returns to the separation tank 11 by itself. If the liquid outlet stability is required to be high, a liquid outlet baffle can be provided in the separation tank 11, and the liquid outlet baffle is arranged near the liquid outlet 112. The liquid outlet baffle is spaced from the bottom of the separation tank 11, and the liquid outlet 112 is connected to the interior of the separation tank 11 through the space. According to actual use requirements, the liquid outlet baffle can be spaced from the top of the separation tank 11. The liquid outlet baffle is a flat plate structure, and its two ends in the length direction are connected to the two side walls of the separation tank 11. The liquid outlet baffle can prevent the liquid disturbance in the separation tank 11 from affecting the liquid outlet.

[0027] If the gas in the separation tank 11 is toxic and harmful, the gas from the exhaust pipe 14 can be connected to the exhaust gas treatment system, and an inverted U-shaped water seal can be set at the liquid outlet 112 to prevent toxic and harmful gases from overflowing through the liquid outlet pipe 13.

[0028] The exhaust pipe 14 is located at the top of the separation tank 11 to facilitate smooth discharge of gas. The exhaust pipe 14 includes a first pipe 141, a first bend pipe 142, a second pipe 143, a second bend pipe 144 and a third pipe 145 connected in sequence. The first pipe 141 is vertically connected to the separation tank 11, and the third pipe 145 and the first pipe 141 are on the same side of the second pipe 143. This structure of the exhaust pipe 14 enables the condensed water inside to flow back to the separation tank 11 under the action of gravity. The third pipe 145 is the outlet of the exhaust pipe 14, which can be selected to be raised and discharged or to bend and extend to the end of the liquid outlet pipe 13 according to the properties of the liquid and the amount of liquid brought out by the gas, so as to collect a small amount of liquid brought out during exhaust through the first bend pipe 142 and the second bend pipe 144.

[0029] The water baffle 15 includes a horizontal plate 151 and four connecting rods 152. The lower ends of the four connecting rods 152 are connected to the periphery of the horizontal plate 151, and the upper ends of the four connecting rods 152 are connected to the inner top wall of the separation tank 11, so that the horizontal plate 151 is located below the exhaust port 113. The water baffle 15 is used to prevent splashing liquid in the separation tank 11 from being discharged along with the air flow, thereby reducing the amount of liquid carried out by the exhaust pipe 14.

[0030] like Figure 2 As shown, the gas-liquid separator is used in a sewage treatment system comprising an underflow filter press 2, a thickener 3, an underflow pump 4, and the gas-liquid separator 1. The thickener 3, underflow pump 4, and underflow filter press 2 are sequentially connected. The gas-liquid separator's liquid inlet pipe 12 is connected to the underflow filter press 2, while the gas-liquid separator's exhaust pipe 14 and liquid outlet pipe 13 are each connected to the thickener 3. An air gap is formed between the end of the exhaust pipe 14 and the thickener 3 to prevent gas from disturbing the thickener liquid level.

[0031] The gas-liquid separator 1 provided by the present invention is primarily used on the filtrate pipe of an air-blown underflow filter press 2, which is connected to a liquid inlet pipe 12. The gas-liquid separator 1 separates the gas and liquid in the filtrate discharged from the underflow filter press 2 and returns it to the thickener 3. A gas-liquid mixture (gas / liquid) enters a separation tank 11 through the liquid inlet pipe 12. Under the action of gravity, the feed undergoes gas-liquid separation within the separation tank 11, with the heavier liquid falling to the bottom of the separation tank 11 and the gas rising to the top. The liquid at the bottom of the separation tank 11 is discharged through a liquid outlet 112 and a liquid outlet pipe 13 into the thickener 3. The gas above is discharged from the exhaust pipe 14 through an exhaust port 113 into the thickener 3. The liquid outlet pipe 13 has a descending slope along the liquid discharge direction, and accumulated gas in the liquid outlet pipe 13 can return to the separation tank 11 on its own. The exhaust pipe 14 has a vertically upward straight pipe section and has an ascending slope along the exhaust direction. The condensed water in the exhaust pipe 14 can flow back to the separation tank 11 by gravity.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas-liquid separator, characterized in that: The invention comprises a separation tank (11), a liquid inlet pipe (12), a liquid outlet pipe (13), an exhaust pipe (14), and a water baffle (15) arranged in the separation tank (11); a liquid inlet (111) is provided on one side wall of the separation tank (11); a liquid outlet (112) is provided on the other side wall of the separation tank (11); the liquid inlet (111) has a height h1, and the liquid outlet (112) has a height h2, where h1>h2; an exhaust port (113) is provided on the top of the separation tank (11); the liquid inlet pipe (12) is in communication with the liquid inlet (111), the liquid outlet pipe (13) is in communication with the liquid outlet (112), the exhaust pipe (14) is in communication with the exhaust port (113), and the water baffle (15) is located below the exhaust port (113).

2. The gas-liquid separator according to claim 1, characterized in that The water retaining plate (15) comprises a horizontal plate (151) and a plurality of connecting rods (152), wherein the lower ends of the plurality of connecting rods (152) are connected to the periphery of the horizontal plate (151), and the upper ends of the plurality of connecting rods (152) are connected to the inner top wall of the separation tank (11), so that the horizontal plate (151) is located below the exhaust port (113).

3. The gas-liquid separator according to claim 1, characterized in that The liquid outlet pipe (13) is formed with a descending slope along the liquid outlet direction.

4. The gas-liquid separator according to claim 1, characterized in that The exhaust pipe (14) comprises a first pipe (141), a first bent pipe (142), a second pipe (143), a second bent pipe (144), and a third pipe (145) connected in sequence, wherein the first pipe (141) is vertically connected to the separation tank (11), and the third pipe (145) and the first pipe (141) are on the same side of the second pipe (143).

5. The gas-liquid separator according to claim 4, characterized in that: The second pipe (143) has an ascending slope along the exhaust direction.

6. The gas-liquid separator according to claim 1, characterized in that The diameter of the liquid inlet pipe (12) gradually increases along the liquid inlet direction.

7. The gas-liquid separator according to claim 1, characterized in that A liquid outlet baffle is provided in the separation tank (11), and a gap is formed between the liquid outlet baffle and the bottom of the separation tank (11), and the liquid outlet (112) is communicated with the interior of the separation tank (11) through the gap.

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