CN204297714U - For the vacuum discharge device of organic waste dry-type anaerobic fermentation system - Google Patents

Abstract

The utility model discloses a vacuum discharge device for an organic waste dry-type anaerobic fermentation system. The device comprises: a discharge tank, which is a pressure vessel, and a pressure gauge communicating with the discharge tank is arranged on the top of the discharge tank. Pressure gauge and material level gauge; feed pipe, set on the side wall of the discharge tank, connected with the inside of the discharge tank; feed control valve, set on the feed pipe; vacuum suction pipe, set on the top of the discharge tank , communicated with the discharge tank; discharge pipe, set at the bottom of the discharge tank, communicated with the discharge tank; discharge control valve, located on the discharge pipe. The discharge device uses the pressure vessel as the discharge tank. By adjusting the pressure in the discharge tank, the pressure difference formed in the discharge tank, the anaerobic reactor and the outside of the discharge tank can be used to drive the material transportation. In the process, there is no direct contact between any mechanical equipment and the material. With the help of pressure difference, it not only ensures the transportation of high solid content material, but also avoids the blockage and wear caused by the direct contact between the material and the equipment, realizes continuous and stable discharge, and ensures the stable operation of the system.

Description

Vacuum discharge device for dry anaerobic fermentation system of organic waste

technical field

The utility model relates to the field of discharging equipment, in particular to a vacuum discharging device for a dry anaerobic fermentation system of organic waste.

Background technique

The research and development of dry anaerobic fermentation technology and equipment for organic waste treatment began in the 1980s. At present, this technology has been successfully applied in developed countries such as Europe and the United States. According to the feeding and discharging methods, the dry anaerobic fermentation process can be divided into two forms: continuous and batch. At present, there are two types of reactors for the common continuous dry fermentation process: vertical and horizontal. The requirements for the performance of the feeding equipment are relatively high, and the reflux of the system is relatively large during operation, resulting in low system processing efficiency. Therefore, the reactors used for continuous dry anaerobic fermentation treatment of organic waste are mostly horizontal. Since the solid content of the dry anaerobic fermentation system is generally 15% to 25%, the solid content is relatively high, and often contains impurities such as long fibers and sand, and the existing process generally uses a screw conveyor or a screw As a discharge device, the pump is not only easy to cause blockage of pipelines and pump chambers, but also easily causes wear or even damage to the pump body, thus affecting the stable operation of the entire anaerobic system. So far, there is no simple and effective discharge device specially developed for dry anaerobic fermentation process.

Utility model content

Based on the above-mentioned problems in the prior art, the utility model provides a vacuum discharge device for an organic waste dry anaerobic fermentation system that can ensure stable operation of the entire system and a low accident rate.

In order to solve the above technical problems, the utility model provides a vacuum discharge device for dry anaerobic fermentation system of organic waste, including:

The discharge tank is a pressure vessel, and its top is provided with a pressure gauge, a pressure gauge and a level gauge connected with the discharge tank;

The feed pipe is arranged on the side wall of the discharge tank and communicates with the inside of the discharge tank;

feed control valve, arranged on the feed pipe;

The vacuum suction pipe is arranged on the top of the discharge tank and communicates with the inside of the discharge tank;

The discharge pipe is arranged at the bottom of the discharge tank and communicates with the inside of the discharge tank;

A discharge control valve is arranged on the discharge pipe.

The beneficial effects of the utility model are: the discharge device uses the pressure vessel as the discharge tank, and can utilize the pressure difference formed between the inside of the discharge tank, the inside of the anaerobic reactor and the outside of the discharge tank by adjusting the pressure in the discharge tank Drive material conveying. During the entire material conveying process, no mechanical equipment is in direct contact with the material. With the effect of pressure difference, it can not only ensure the conveying of materials with high solid content, but also avoid the direct contact between the material and the equipment. The clogging and wear of the machine achieves the purpose of continuous and stable discharge and ensures the stable operation of the whole system.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a vacuum discharge device provided by an embodiment of the present invention.

In the figure: 1-feed pipe (connected with the discharge port of the anaerobic fermentation reactor); 2-feed control valve; 3-discharge tank; 4-manhole; 5-discharge pipe; 6-outlet Material control valve; 7-material level gauge; 8-pressure gauge; 9-pressure gauge; 10-vacuum suction pipe; 11. tank leg.

Detailed ways

The technical solutions in the embodiments of the utility model are clearly and completely described below, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

Figure 1 shows a discharge device for an organic waste dry anaerobic fermentation system provided by an embodiment of the present invention. It is a discharge device that uses pressure difference to transport materials. The device includes:

The discharge tank is a pressure vessel, and its top is provided with a pressure gauge, a pressure gauge and a material level gauge connected with the discharge tank, and the pressure gauge and the material level gauge can indicate the pressure and material level in the discharge tank; Preferably, the discharge tank can be a cylindrical pressure vessel with a spherical head at the top and a conical head at the bottom.

The feed pipe is arranged on the side wall of the discharge tank and communicates with the inside of the discharge tank;

The feed control valve is arranged on the feed pipe;

The vacuum suction pipe is arranged on the top of the discharge tank and communicates with the inside of the discharge tank; the vacuum suction pipe is also used as a compressed air intake pipe;

The discharge pipe is arranged at the bottom of the discharge tank and communicates with the inside of the discharge tank; preferably, the discharge pipe can be arranged at the center of the cone bottom of the discharge tank.

The discharge control valve is arranged on the discharge pipe.

Preferably, both the feed control valve and the discharge control valve in the above discharge device are pneumatic valves, and remote control can be realized through weak electricity.

Preferably, the pressure gauge in the above-mentioned discharge device can be an electronic pressure gauge, and the material level gauge can be an electronic material level gauge; it is convenient to send an electric signal to the control system, and it is convenient to automatically control the vacuum discharge device.

Above-mentioned vacuum discharge device also comprises: vacuum pump and air compressor, be connected with discharge tank by vacuum suction pipe, can vacuumize or pressurize in the discharge tank, and realize switching in switching mode (as switching control valve can be set ) Connect the vacuum suction pipe to the air compressor to add compressed air to the discharge tank.

The above-mentioned vacuum discharge device also includes: a material level gauge, which is arranged on the top of the discharge tank and communicates with the inside of the discharge tank, and can indicate the height of the material in the discharge tank through the material level gauge.

The above-mentioned vacuum discharge device also includes: tank legs, which are arranged at the bottom of the discharge tank to support the discharge tank. Preferably, the legs of the tank body are composed of three support rods, which are arranged at the bottom of the discharge tank in a 120-degree distribution.

In the above-mentioned vacuum discharge device, a manhole is provided in the middle of the discharge tank, through which it is convenient to overhaul and maintain the inside of the discharge tank.

The vacuum discharge device of the present invention will be further described in conjunction with specific embodiments below.

The vacuum discharge device of the embodiment of the utility model is used in the dry anaerobic fermentation system of organic waste. The structure of the discharge device is shown in Figure 1. It has a discharge tank 3. The discharge tank is a top spherical head and a bottom A cylindrical pressure vessel with a conical head. The pressure vessel needs to be tested for pressure and air tightness after processing. There is a feed port on the side of the discharge tank 3, which is connected to the feed pipe 1. A feed control valve 2 is provided on the feed pipe; a discharge port is provided at the center of the cone bottom of the conical head at the bottom of the discharge tank 3, and the discharge port is connected to the discharge pipe 5, and on the discharge pipe 5 A discharge control valve 6 is provided; the center of the spherical head on the top of the discharge tank is provided with installation holes for pressure gauges, pressure gauges and material level gauges, and a vacuum suction port (the vacuum suction port is also used as a compressed air inlet at the same time) Gas port), used to install pressure gauge 8, pressure gauge 9 and material level gauge 7 and connect vacuum suction pipe 10 respectively; in order to facilitate the manufacture and maintenance of the discharge device, a man is installed on the side of the discharge tank cylindrical shell Holes 4; in order to facilitate the installation and fixing of the device, 3 support rods are set at an angle of 120° on the side of the cylindrical shell of the discharge tank 3 as tank legs 11, and the upper ends of each support rod can be welded on the discharge tank 3 On the side wall, it is convenient to support and fix the discharge tank 3.

When the discharge device is working, under the action of vacuum negative pressure, the digested material in the anaerobic reactor enters the discharge tank 3 from the feed pipe 1, and when the material in the discharge tank 3 reaches a certain amount, it stops Feed the material, and then discharge the material from the discharge tank 3 through the discharge pipe 5 under the action of compressed air pressure, that is, complete one discharge, and repeat the above process to realize continuous transfer of materials.

When the discharge device needs to be discharged, the vacuum suction pipe 10 is first connected to the vacuum pump, and the discharge tank 3 is vacuumed. When the vacuum degree in the discharge tank 3 reaches the set value, the pressure gauge 9 sends out signal, open the feed control valve 2, due to the effect of pressure difference, the material in the anaerobic fermentation reactor enters the discharge tank 3 through the feed pipe 1, when the material in the tank reaches the set material level, the material level The gauge 7 sends a signal to close the feed control valve 2, and at the same time connect the vacuum suction pipe 10 to the air compressor. When the pressure in the tank reaches the set value, the pressure gauge 9 sends a signal to open the discharge control valve 6. Under the action of the pressure difference inside and outside the discharge tank 3, the material that has entered the discharge tank 3 is discharged from the discharge pipe 5 to the outside of the discharge tank 3. When the material level drops to the set position, the material level gauge 7 sends a signal to close The discharge control valve 6 closes the air compressor at the same time to complete one discharge; repeat the above steps until the discharge ends. If the output is large, multiple such devices can be configured at the same time.

In order to realize automatic control, furthermore, electronic instruments can be used for the material level gauge and pressure gauge in the above-mentioned discharge device. The signals fed back from these instruments to the control system start and close the feed control valve, discharge control valve and other supporting equipment, thereby realizing automatic control.

In order to improve the safety of the operation of the discharge device, further, the feed control valve and the discharge control valve of the above discharge device can use pneumatic valves, so that the whole device only needs to be equipped with weak electricity, which can not only realize remote control of the valve. On and off, and greatly improve the security of the system.

In order to ensure convenient assembly of pipelines and components, further, each pipeline of the above-mentioned discharge device can be connected to the tank body of the discharge tank, and the pipelines and valves can be connected by flanges.

In order to improve the corrosion resistance of the device, further, the tank body and pipelines of the discharge tank of the above-mentioned discharge device must be made of corrosion-resistant materials or undergo anti-corrosion treatment.

The discharge device of the embodiment of the utility model uses the pressure difference between the inside of the discharge tank, the inside of the anaerobic reactor and the outside of the discharge tank to complete the discharge. During the entire discharge process, no mechanical equipment directly contacts the material, realizing Non-clogging, low-wear discharge, overcomes the shortcomings of existing conventional discharge equipment, especially suitable for dry anaerobic fermentation systems of organic waste, effectively reducing the accident rate of discharge equipment or devices in dry anaerobic fermentation systems, can Ensure the stability of the entire system operation.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (7)

1. A vacuum discharge device for an organic waste dry anaerobic fermentation system, characterized in that it comprises: The discharge tank is a pressure vessel, and its top is provided with a pressure gauge, a pressure gauge and a level gauge connected with the discharge tank; The feed pipe is arranged on the side wall of the discharge tank and communicates with the inside of the discharge tank; feed control valve, arranged on the feed pipe; The vacuum suction pipe is arranged on the top of the discharge tank and communicates with the inside of the discharge tank; The discharge pipe is arranged at the bottom of the discharge tank and communicates with the inside of the discharge tank; A discharge control valve is arranged on the discharge pipe. 2. The vacuum discharge device for dry anaerobic fermentation system of organic waste according to claim 1, characterized in that, it also includes: A vacuum pump and an air compressor are all connected with the vacuum suction pipe. 3. The vacuum discharge device for dry anaerobic fermentation system of organic waste according to claim 1, characterized in that, it also includes: The pressure gauge, pressure gauge and material level gauge are arranged on the top of the discharge tank and communicated with the discharge tank. 4. The vacuum discharge device for an organic waste dry anaerobic fermentation system according to any one of claims 1 to 3, characterized in that, it also includes: The outriggers of the tank body are arranged at the bottom of the discharge tank to support the discharge tank. 5. The vacuum discharge device for dry anaerobic fermentation system of organic waste according to any one of claims 1 to 3, characterized in that, the discharge tank is a spherical head at the top and a conical seal at the bottom. head of a cylindrical pressure vessel. 6 . The vacuum discharge device for dry anaerobic fermentation system of organic waste according to claim 1 , wherein a manhole is arranged in the middle of the discharge tank. 7 . 7. The vacuum discharge device for organic waste dry anaerobic fermentation system according to any one of claims 1 to 3, characterized in that, Described pressure gauge adopts electronic pressure gauge; The material level gauge adopts an electronic material level gauge; Both the feed control valve and the discharge control valve are pneumatic valves.