Gas-liquid separator with foam catching function

Abstract

The utility model relates to a gas-liquid separator with a foam catching function. Comprising a gas-liquid separator tank body, an extraction opening formed in the top of the gas-liquid separator tank body, a discharge opening formed in the bottom of the gas-liquid separator tank body, a feed opening formed in the side wall of the upper part of the gas-liquid separator tank body, and a first liquid level switch and a second liquid level switch which are respectively arranged at different height positions of the gas-liquid separator tank body, a foam catching device is further arranged in a cavity of the gas-liquid separator tank body at the position of the extraction opening, the outer diameter size of the foam catching device is matched with the inner diameter size of the extraction opening, the extraction opening is connected with a vacuum pump pipeline in the kitchen waste treatment system, and the discharge outlet is connected with a water ring pump pipeline in the kitchen waste treatment system. The foam catching device comprises a foam catching device barrel, a sieve plate positioned at the bottom of the foam catching device and a gas-liquid filter screen arranged in an inner cavity of the foam catching device barrel. In the suction process of the vacuum pump, gas containing water mist or foam is blocked by the foam catcher and is not sucked into the vacuum pump any more.

Description

Technical Field

[0001] The utility model relates to a gas-liquid separator, in particular to a gas-liquid separator with a foam catching function, which is applied to a vacuum collection unit in a restaurant garbage treatment system, and is particularly suitable for the vacuum collection and treatment process of crushed restaurant garbage on ships. Background Art

[0002] With the increasing awareness of environmental protection, the treatment of food waste has received more and more attention, the treatment level has been continuously improved, and some innovations have been studied and applied. Due to space limitations, ships are different from the civilian field. The current advanced treatment method is to first crush the food waste with water, so that the crushed food waste sewage has fluidity and is easy to automatically collect and store.

[0003] The best way to collect the pulverized kitchen waste sewage is vacuum suction. Vacuum suction first requires the use of a vacuum pump to suck the collection destination to a certain vacuum degree, and then open the control valve to suck the sewage, but at the same time, the sewage must not be sucked into the vacuum pump, which requires the installation of a gas-liquid separator to solve the problem. Ordinary gas-liquid separators can separate most of the liquid in the sewage, but there is still a small amount of liquid and gas foam that cannot be separated and is sucked into the vacuum pump, which will corrode the vacuum pump, affect the operating efficiency of the vacuum pump, and reduce the performance and service life of the vacuum pump. Summary of the invention

[0004] The utility model aims to overcome the defects of the prior art and provide a gas-liquid separator with a foam catching function. The foam catching device is arranged on the gas-liquid separator, which solves the problem that unseparated liquid and gas foam are sucked into the vacuum pump in sewage treatment. The utility model has not only a simple structure and a small volume, but is also particularly suitable for shipboard kitchen waste treatment and meets the space and volume requirements of shipboard devices. The utility model is also convenient to use and maintain, and ensures the stable operation of the kitchen waste vacuum collection unit.

[0005] The utility model is implemented as follows: a gas-liquid separator with a foam-catching function, characterized in that it comprises a gas-liquid separator tank body, an air suction port located at the top of the gas-liquid separator tank body, a discharge port located at the bottom of the gas-liquid separator tank body, a feed port arranged on the upper side wall of the gas-liquid separator tank body, and a first liquid level switch and a second liquid level switch respectively arranged at different height positions of the gas-liquid separator tank body, a foam-catching device is also arranged in the cavity of the gas-liquid separator tank body at the air suction port, the outer diameter size of the foam-catching device matches the inner diameter size of the air suction port, and the center line of the foam-catching device coincides with the center line of the gas-liquid separator tank body, the air suction port is connected to the vacuum pump pipeline in the restaurant kitchen waste treatment system, the discharge port is connected to the water ring pump pipeline in the restaurant kitchen waste treatment system, and the foam-catching device comprises a foam-catching device cylinder body, a sieve plate located at the bottom of the foam-catching device, and a gas-liquid filter screen arranged in the inner cavity of the foam-catching device cylinder body.

[0006] The sieve plate provided on the foam catching device is evenly provided with a plurality of circular through holes of equal diameter. The length of the cylinder of the foam catching device is set according to the size of the gas-liquid separator tank, and its length is sufficient to block and isolate the liquid entering the gas-liquid separator. The gas-liquid filter screen adopts a stainless steel corrugated gas-liquid filter screen.

[0007] The feed port and the gas-liquid separator tank are arranged in a tangent direction.

[0008] In the utility model, the first liquid level switch for triggering the start of the water ring pump when the liquid level reaches the corresponding height is arranged at a low position of the gas-liquid separator tank body, and the second liquid level switch for triggering an alarm when the liquid level reaches the corresponding height and causing the food waste treatment system to control the vacuum pump to stop running is arranged at a high position of the gas-liquid separator tank body, and its end in the cavity of the gas-liquid separator tank body is located below the foam capture device.

[0009] The beneficial effects of the utility model are as follows: in order to prevent liquid from entering the vacuum pump during the collection and treatment of the kitchen waste system, the utility model firstly sets a gas-liquid separation zone to physically isolate the air sucked by the vacuum pump from the sewage entering the gas-liquid separator, so that the sewage will not be sucked into the vacuum pump; secondly, a foam capture device is set, and the ordinary filter in the prior art has a poor foam capture effect. The utility model specifically designs and adopts a stainless steel corrugated gas-liquid filter, which has been verified by experiments to effectively block the passage of liquid mist and gas foam; thirdly, the foam capture device is also equipped with a sieve plate, and a number of equal-diameter circular through holes are evenly arranged on the circular sieve plate, so that the gas and liquid in the vacuum suction process can be evenly diverted and limited, and evenly distributed on the cross section of the corrugated gas-liquid filter, so as to efficiently achieve gas-liquid separation. Through the above three aspects of structural design, the utility model effectively solves the problem of gas-liquid separation in application occasions such as vacuum collection of kitchen waste, and realizes the smooth operation of the vacuum collection unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram showing the overall structure of the utility model.

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0012] Figure 3 It is a schematic diagram of the cross-sectional structure of the foam capture device in the utility model.

[0013] Figure 4 The utility model is a schematic diagram showing the structure of the sieve plate in the foam catching device.

[0014] In the figure: 11. air suction port; 12. discharge port; 13. feed port; 14. gas-liquid separator tank; 15. first liquid level switch; 16. second liquid level switch; 17. foam capture device; 21. foam capture device cylinder; 22. sieve plate; 23. gas-liquid filter. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific implementation cases.

[0016] According to the attached Figure 1 and attached Figure 2 The utility model is a gas-liquid separator with a foam catching function, comprising a gas-liquid separator tank 14, an air suction port 11 located at the top of the gas-liquid separator tank 14, a discharge port 12 located at the bottom of the gas-liquid separator tank 14, a feed port 13 provided on the upper side wall of the gas-liquid separator tank 14, and a first liquid level switch 15 and a second liquid level switch 16 respectively provided at different heights of the gas-liquid separator tank 14. A foam catching device 17 is also provided in the cavity of the gas-liquid separator tank 14 at the air suction port 11. The outer diameter of the foam catching device 17 matches the inner diameter of the air suction port 11, and the center line of the foam catching device 17 coincides with the center line of the gas-liquid separator tank 14. The air suction port 11 is connected to the vacuum pump pipeline in the food waste treatment system, the discharge port 12 is connected to the water ring pump pipeline in the food waste treatment system, and the feed port 13 is arranged in a tangent direction to the gas-liquid separator tank 14. The first liquid level switch 15 is arranged at a low position of the gas-liquid separator tank body 14, and is used to trigger and start the water ring pump connected to the discharge port 12 to suck sewage when the liquid level in the cavity of the gas-liquid separator tank body 14 reaches this position height. The second liquid level switch 16 is arranged at a high position of the gas-liquid separator tank body 14, and the end in the cavity of the gas-liquid separator tank body 14 is located below the foam capture device 17, and is used to trigger an alarm when the liquid level in the cavity of the gas-liquid separator tank body 14 reaches this position height, so that the food waste treatment system controls the vacuum pump to stop running.

[0017] According to the attached Figure 3 and attached Figure 4 The foam catching device 17 comprises a foam catching device cylinder 21, a sieve plate 22 at the bottom of the foam catching device 17 and a gas-liquid filter 23 arranged in the inner cavity of the foam catching device cylinder 21. The sieve plate 22 is evenly provided with a plurality of circular through holes of equal diameter. The gas-liquid filter 23 is a stainless steel corrugated gas-liquid filter. The length of the foam catching device cylinder 21 is set according to the size of the gas-liquid separator tank 14, and it needs to be sufficient to block and isolate the liquid entering the gas-liquid separator.

[0018] The working principle and working process of the utility model are as follows:

[0019] According to the attached Figure 1 ~Attached Figure 4 After the kitchen waste treatment system issues a suction command to the vacuum pump, the vacuum pump starts to operate, and the inner cavity of the gas-liquid separator tank body 14 is sucked through the suction port 11, so that a vacuum is generated inside the gas-liquid separator. When the vacuum degree of the inner cavity of the gas-liquid separator tank body 14 reaches the set value, the kitchen waste treatment system opens the control valve provided on the pipeline connected to the feed port 13, and the liquid material is sucked from the feed port 13. With the help of inertia and gravity, the liquid material spirals downward along the inner wall of the gas-liquid separator tank body 14 to the discharge port 12 below for gathering. Since the cylinder 21 of the foam capture device is relatively long, the sewage entering the inner cavity of the gas-liquid separator is blocked. As the liquid level rises, after the liquid level reaches the set liquid level where the first liquid level switch 15 is located, the water ring pump connected to the discharge port 12 is started, and the gas-liquid separator is depressurized at the same time, so as to facilitate the pumping out of the liquid. The water ring pump adopts a vacuum water ring pump.

[0020] The function of the second liquid level switch 16 is that when an abnormal operation occurs, if the liquid level in the gas-liquid separator rises to the position of the second liquid level switch detection 16, the automatic alarm of the second liquid level switch detection 16 is triggered, and the food waste treatment system automatically controls the vacuum pump to stop running to prevent sewage from being sucked into the vacuum pump.

[0021] In the kitchen waste treatment system, the vacuum pump starts to run at the same time as the pulverizer starts working. When the pulverizer runs for a set time (usually 60 seconds), the pneumatic ball valve on the pulverizer discharge pipe automatically opens. Since the vacuum degree in the gas-liquid separator tank 14 cavity has reached the set value at this time, the pulverized kitchen waste mixed with sewage is sucked into the gas-liquid separator tank 14 cavity. During the suction process, the vacuum degree in the gas-liquid separator tank 14 cavity will decrease. In order to maintain the vacuum degree and avoid frequent startup of the vacuum pump, the vacuum pump does not stop during the kitchen waste treatment process. In the event of excessive vacuum, the safety valve installed on the vacuum pump inlet pipe automatically releases the pressure to protect the normal operation of the vacuum pump and maintain the set vacuum degree in the gas-liquid separator tank 14 cavity.

[0022] During the operation of the vacuum pump, air is continuously sucked into the vacuum pump from the air suction port 11. In order to ensure that the gas entering the vacuum pump does not contain moisture, a foam capture device 17 is provided immediately below the air suction port 11 of the gas-liquid separator. The gas containing water mist or foam is evenly diverted by the sieve plate 22 at the bottom of the foam capture device 17, and then passes through the filler provided in the foam capture device 17, namely, a wavy gas-liquid filter screen 23, to block the water mist and foam in the gas, thereby protecting the vacuum pump and enabling the vacuum pump to operate safely and reliably.

Claims

1. A gas-liquid separator with a foam capture function, characterized in that: It includes a gas-liquid separator tank body, an air suction port located at the top of the gas-liquid separator tank body, a discharge port located at the bottom of the gas-liquid separator tank body, a feed port arranged on the upper side wall of the gas-liquid separator tank body, and a first liquid level switch and a second liquid level switch respectively arranged at different height positions of the gas-liquid separator tank body. A foam capture device is also arranged in the cavity of the gas-liquid separator tank body at the air suction port. The outer diameter of the foam capture device matches the inner diameter of the air suction port. The air suction port is connected to the vacuum pump pipeline in the food waste treatment system, and the discharge port is connected to the water ring pump pipeline in the food waste treatment system. The foam capture device includes a foam capture device cylinder body, a sieve plate located at the bottom of the foam capture device, and a gas-liquid filter screen arranged in the inner cavity of the foam capture device cylinder body.

2. The gas-liquid separator with foam capture function according to claim 1, characterized in that: The center line of the foam capture device coincides with the center line of the gas-liquid separator tank.

3. A gas-liquid separator with a foam capture function according to claim 1 or 2, characterized in that: The sieve plate arranged on the foam catching device is evenly provided with a plurality of circular through holes of equal diameter.

4. A gas-liquid separator with a foam capture function according to claim 1 or 2, characterized in that: The length of the cylinder of the foam capture device is set according to the size of the gas-liquid separator tank, and its length is sufficient to block and isolate the liquid entering the gas-liquid separator.

5. The gas-liquid separator with foam capture function according to claim 1, characterized in that: The feed port and the gas-liquid separator tank are arranged in a tangent direction.

6. The gas-liquid separator with foam capture function according to claim 1, characterized in that: The gas-liquid filter screen is a stainless steel corrugated gas-liquid filter screen.

7. The gas-liquid separator with foam capture function according to claim 1, characterized in that: The first liquid level switch, which is used to trigger the start of the water ring pump when the liquid level reaches the corresponding height, is arranged at a low position of the gas-liquid separator tank body, and the second liquid level switch, which is used to trigger an alarm when the liquid level reaches the corresponding height and enable the food waste treatment system to control the vacuum pump to stop running, is arranged at a high position of the gas-liquid separator tank body, and its end in the gas-liquid separator tank body cavity is located below the foam capture device.

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