Pulse discharging device

Abstract

The utility model discloses a pulse discharging device which comprises an air storage tank, an air inlet assembly is installed on the left side of the air storage tank, the air inlet assembly comprises an air inlet pipe communicated with the left side wall of the air storage tank, a valve and an electromagnetic flow valve are sequentially installed on the outer side wall of the air inlet pipe from left to right, and a safety relief valve is installed on the upper end face of the air storage tank. During use, air flow is conveyed into the air storage tank through the air inlet pipe, when reverse blowing discharging is carried out on the disc filter, the pulse valve and the electromagnetic valve are sequentially opened, when air in the air storage tank enters the pulse valve, the pulse valve is opened, and the pulse valve is opened. The reverse blowing discharging device is simple in structure, convenient and fast to install and good in sealing performance, filter cloth is prevented from being blown by an air bag for a long time, and therefore loss of the filter cloth is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cake discharging of a disc filter, in particular to a pulse discharging device. Background Technique

[0002] During the operation of a disc filter, after the cake undergoes a series of filtration and drying processes, it will enter the discharging area. In the discharging area, the discharging device starts to work. By means of reverse blowing, the cake is peeled off from the filter cloth and falls into the discharging trough. This process is one of the key steps for the disc filter to achieve solid-liquid separation. The principle of reverse blowing for discharging is mainly based on the principle of aerodynamics. Specifically, when the reverse blowing system is started, compressed air or air flow is introduced between the filter cloth and the cake through specific pipelines and devices. This air flow forms an upward force on the surface of the filter cloth, weakening or eliminating the adhesion force between the cake and the filter cloth.

[0003] The reverse blowing discharging mechanism of a disc filter usually uses compressed air or air flow for blowing. This blowing process directly connects the external air conveying pipeline with the reverse blowing discharging mechanism, so that the air flow is introduced into the filter fan through components such as a distribution head, a distribution disc and a filtrate pipe, causing the filter cloth to bulge, thereby weakening or eliminating the adhesion force between the cake and the filter cloth, and enabling the cake to be smoothly peeled off from the filter cloth and fall into the discharging trough.

[0004] Therefore, in order to ensure that the filter cloth bulges during discharging, it is necessary to continuously supply air to the air receiver for a long time before discharging, that is, it is necessary to blow the filter cloth for a long time to make the filter cloth bulge for discharging, resulting in rapid damage to the filter cloth due to the long-term blowing of the filter cloth by the air receiver. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pulse discharging device, which has the characteristics of realizing instant exhaust, simple structure, convenient installation, good sealing performance, avoiding the long-term blowing of the filter cloth by the air receiver, and thus effectively reducing the loss of the filter cloth.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a pulse discharging device, including an air receiver, an air inlet assembly is installed on the left side of the air receiver, the air inlet assembly includes an air inlet pipe communicated with the left side wall of the air receiver, a valve and an electromagnetic flow valve are sequentially installed on the outer side wall of the air inlet pipe from left to right, a safety relief valve is installed on the upper end surface of the air receiver, a pulse assembly is installed on the right side of the air receiver, the pulse assembly includes a pulse valve installed on the right side of the air receiver, an electromagnetic valve is installed at the bottom of the pulse valve through a pipeline, and a blowdown valve is installed at the left end of the bottom of the air receiver.

[0007] In order to facilitate the connection of the air inlet pipe with an external pipeline, as an optimization of the pulse discharging device of the utility model, a flange is installed at the end of the air inlet pipe far away from the air receiver.

[0008] To facilitate observing the air pressure inside the gas storage tank, preferably for the pulse discharging device of the present utility model, a pressure gauge installed on the upper end face of the gas storage tank is provided on the left side of the safety relief valve.

[0009] To facilitate connecting the gas storage tank to the reverse blowing discharging device of the disc filter, preferably for the pulse discharging device of the present utility model, an air outlet pipe is communicated with the bottom of the solenoid valve.

[0010] To facilitate fixing the gas storage tank, preferably for the pulse discharging device of the present utility model, a support frame is installed at the bottom of the gas storage tank.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] When the present utility model is in use, air flow is conveyed into the gas storage tank through the air inlet pipe. The electromagnetic flow valve can control the fluid flow rate, and the pressure gauge can detect the pressure inside the gas storage tank. The safety relief valve can exhaust and relieve pressure to ensure that the air pressure inside the gas storage tank is within a safe range. Then, when reverse blowing and discharging the disc filter, by sequentially opening the pulse valve and the solenoid valve, when the gas in the gas storage tank enters the pulse valve, the gas forms a high-pressure pulse air flow and is released, so that the high-pressure pulse air flow enters the reverse blowing discharging device through the air outlet pipe to achieve instantaneous exhaust. This device has a simple structure, is convenient to install, has good sealing performance, and avoids the air bag from blowing the filter cloth for a long time, thereby effectively reducing the loss of the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structure diagram of the present utility model;

[0014] Figure 2 is the left view structure diagram of the gas storage tank of the present utility model.

[0015] In the figure: 1. Gas storage tank; 2. Intake assembly; 201. Air inlet pipe; 202. Flange; 203. Valve; 204. Electromagnetic flow valve; 3. Pulse assembly; 301. Pulse valve; 302. Solenoid valve; 303. Air outlet pipe; 4. Support frame; 5. Safety relief valve; 6. Pressure gauge; 7. Drain valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Please refer to Figures 1 to 2, Pulse discharging device, including an air storage tank 1, an air inlet assembly 2 is installed on the left side of the air storage tank 1. The air inlet assembly 2 includes an air inlet pipe 201 communicated with the left side wall of the air storage tank 1. A valve 203 and an electromagnetic flow valve 204 are sequentially installed on the outer side wall of the air inlet pipe 201 from left to right. A safety relief valve 5 is installed on the upper end face of the air storage tank 1. A pulse assembly 3 is installed on the right side of the air storage tank 1. The pulse assembly 3 includes a pulse valve 301 installed on the right side of the air storage tank 1. The bottom of the pulse valve 301 is installed with a solenoid valve 302 through a pipeline. A drain valve 7 is installed at the left end of the bottom of the air storage tank 1.

[0017] In this embodiment: When in use, air flow is transported into the air storage tank 1 through the air inlet pipe 201. The electromagnetic flow valve 204 can control the fluid flow rate, and the pressure gauge 6 can detect the pressure inside the air storage tank 1. The safety relief valve 5 can exhaust and relieve pressure to ensure that the air pressure in the air storage tank 1 is within a safe range. Then, when performing reverse blowing and discharging on the disc filter, by sequentially opening the pulse valve 301 and the solenoid valve 302, when the gas in the air storage tank 1 enters the pulse valve 301, the gas forms a high-pressure pulsed air flow and is released, so that the high-pressure pulsed air flow enters the reverse blowing and discharging device through the air outlet pipe 303 to achieve instant exhaust. This device has a simple structure, is convenient to install, has good sealing performance, and avoids the air bag blowing the filter cloth for a long time, thus effectively reducing the loss of the filter cloth.

[0018] As a technical optimization scheme of the present utility model, a flange 202 is installed at the end of the air inlet pipe 201 away from the air storage tank 1.

[0019] In this embodiment: By setting the flange 202, it is convenient to connect the air inlet pipe 201 with an external pipeline.

[0020] As a technical optimization scheme of the present utility model, a pressure gauge 6 installed on the upper end face of the air storage tank 1 is arranged on the left side of the safety relief valve 5.

[0021] In this embodiment: By installing the pressure gauge 6, it is convenient to observe the air pressure inside the air storage tank 1.

[0022] As a technical optimization scheme of the present utility model, an air outlet pipe 303 is communicated with the bottom of the solenoid valve 302.

[0023] In this embodiment: By setting the air outlet pipe 303, it is convenient to connect the air storage tank 1 with the reverse blowing and discharging device of the disc filter.

[0024] As a technical optimization scheme of the present utility model, a support frame 4 is installed at the bottom of the air storage tank 1.

[0025] In this embodiment: By setting the support frame 4, it is convenient to fix and support the air storage tank 1.

[0026] Working principle: First, when using this device, connect the air inlet pipe 201 to an external gas transmission pipeline, then connect the air outlet pipe 303 to the reverse blowing and discharging device of the disk filter. Then open the valve 203 and the electromagnetic flow valve 204, so that the air flow enters the gas storage tank 1 along the air inlet pipe 201. The electromagnetic flow valve 204 can control the fluid flow rate, and the pressure gauge 6 can detect the pressure inside the gas storage tank 1. When the pressure is too high, the safety relief valve 5 can exhaust and relieve the pressure to ensure that the air pressure in the gas storage tank 1 is within a safe range. Then, when performing reverse blowing and discharging on the disk filter, by sequentially opening the pulse valve 301 and the solenoid valve 302, when the gas in the gas storage tank 1 enters the pulse valve 301 and the solenoid valve 303, the gas forms a high-pressure pulsed air flow and is released, so that the high-pressure pulsed air flow enters the reverse blowing and discharging device through the air outlet pipe 303, and blows the air bag to be unloaded in a short time, avoiding the problem of fast damage of the filter cloth caused by long-term blowing of the air bag on the filter cloth.

[0027] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Pulse discharging device, comprising an air storage tank (1), characterized in that: An air inlet assembly (2) is installed on the left side of the gas storage tank (1). The air inlet assembly (2) includes an air inlet pipe (201) communicated with the left side wall of the gas storage tank (1). A valve (203) and an electromagnetic flow valve (204) are sequentially installed on the outer side wall of the air inlet pipe (201) from left to right. A safety relief valve (5) is installed on the upper end face of the gas storage tank (1). A pulse assembly (3) is installed on the right side of the gas storage tank (1). The pulse assembly (3) includes a pulse valve (301) installed on the right side of the gas storage tank (1). A solenoid valve (302) is installed at the bottom of the pulse valve (301) through a pipeline. A drain valve (7) is installed at the left end of the bottom of the gas storage tank (1).

2. The pulse discharging device according to claim 1, wherein: A flange (202) is installed at the end of the air inlet pipe (201) far from the gas storage tank (1).

3. The pulse discharging device according to claim 1, wherein: A pressure gauge (6) installed on the upper end face of the gas storage tank (1) is arranged on the left side of the safety relief valve (5).

4. The pulse discharging device according to claim 1, characterized in that: An air outlet pipe (303) is communicated with the bottom of the solenoid valve (302).

5. The pulse discharging device according to claim 1, wherein: A support frame (4) is installed at the bottom of the gas storage tank (1).

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