Automatic drainage device of negative pressure buffer tank

Abstract

The utility model relates to the technical field of equipment drainage, in particular to an automatic drainage device of a negative pressure buffer tank, which comprises the negative pressure buffer tank, a vacuumizing pipeline, an emptying pipeline, an automatic drainage device, a drainage pipeline, a water outlet pipeline and a water level control component. The vacuumizing pipeline is designed on one side of the negative pressure buffer tank, the drainage pipeline is designed at the lower end of the negative pressure buffer tank, the emptying pipeline is arranged above the automatic drainage device, the drainage pipeline is arranged below the automatic drainage device, the automatic drainage device comprises a water storage tank, and the water storage tank is a cylindrical tank body made of stainless steel plates. The water storage tank is provided with a transmitter and a floating ball liquid level switch, and a water outlet pipe is arranged on the side face of the water storage tank, the automatic drainage device of the negative pressure buffer tank can automatically complete drainage of condensed water in the negative pressure buffer tank under the condition that the negative pressure value of a negative pressure pipeline is not affected, and the stability of the negative pressure value of a system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment drainage, in particular to an automatic drainage device for a negative pressure buffer tank. Background Art

[0002] In the cigarette production process, many processes require the use of negative pressure. When using a vacuum pump to draw negative pressure, moisture in the air and materials will be drawn into the negative pressure buffer tank and accumulated. Too much water in the tank will cause the buffer tank to shake and the tank body to corrode. Currently, most equipment drainage methods are positive pressure drainage, but when equipment or containers are drained under negative pressure, because there is negative pressure in the drain pipe, the accumulated water in the container cannot flow out of the atmosphere, but will suck in air. Therefore, the vacuum system needs to be stopped and the container drain valve needs to be manually opened for drainage. This drainage method affects the continuity and efficiency of production. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides an automatic drainage device for a negative pressure buffer tank, which solves the problem that the current drainage method for equipment is mostly positive pressure drainage, but when the equipment or container is drained under negative pressure, because there is negative pressure in the drainage pipe, the accumulated water in the container cannot flow out of the atmosphere, but will suck in air. Therefore, the vacuum system needs to be stopped and the container drainage valve needs to be manually opened for drainage. This drainage method affects the technical problem of production continuity and production efficiency.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A negative pressure buffer tank automatic drainage device, comprising a negative pressure buffer tank, a vacuum pipeline, a venting pipeline, an automatic drainage device, a drainage pipeline, a water outlet pipeline and a water level control component, wherein the negative pressure buffer tank and the automatic drainage device are connected via the vacuum pipeline and the drainage pipeline, wherein the vacuum pipeline is designed at one side of the negative pressure buffer tank, the drainage pipeline is designed at the lower end of the negative pressure buffer tank, the venting pipeline is arranged above the automatic drainage device, and the drainage pipeline is arranged below the automatic drainage device, wherein the automatic drainage device comprises a water storage tank, wherein the water storage tank is made of a stainless steel plate to form a cylindrical tank body;

[0008] Wherein, a transmitter and a float liquid level switch are arranged on the water storage tank, a water outlet pipe is arranged on the side of the water storage tank, and a drain pipe is arranged at the bottom of the water storage tank.

[0009] Preferably: the vent pipeline includes a vent pipe and a vent solenoid valve arranged thereon, one end of the vent pipe is connected to the top of the water storage tank, the vacuum pipeline includes a vacuum pipe and a first ball valve and a vacuum solenoid valve arranged thereon, one end of the vacuum pipe is connected to the top of the water storage tank, and the other end is connected to the negative pressure buffer tank.

[0010] Preferably: the drainage pipeline includes a drainage pipe and a drainage solenoid valve arranged thereon, one end of the drainage pipe is connected to the bottom of the water storage tank, the water outlet pipeline includes a water outlet pipe and a steel ball sealing one-way valve and a second ball valve arranged thereon, one end of the water outlet pipe is connected to the negative pressure buffer tank, and the other end is connected to the water storage tank, the air inlet of the steel ball sealing one-way valve is installed on the same side of the negative pressure buffer tank, the water level control component is connected to the vacuum solenoid valve, the vent solenoid valve, the drainage solenoid valve, the float liquid level switch, and the transmitter through a cable, and the float liquid level switch is a float type liquid level switch.

[0011] (III) Beneficial effects

[0012] 1. Connect the signal of the float liquid level switch to the control circuit, and the rise and fall of the float will control the opening and closing of the solenoid valve group. Put air into the water tank and evacuate it to eliminate and increase the negative pressure value in the water tank, so as to achieve drainage under the positive pressure state of the water tank.

[0013] 2. Install a steel ball sealed one-way valve on the water outlet pipe at the bottom of the negative pressure buffer tank. The one-way valve can automatically cut off the drainage of the buffer tank when the water storage tank is drained according to the pressure difference between the negative pressure buffer tank and the water storage tank. After the drainage of the water storage tank is completed, the buffer tank is automatically opened for drainage.

[0014] 3. This device can automatically discharge the condensate from the negative pressure buffer tank without affecting the negative pressure value of the negative pressure pipeline, thereby improving the stability of the negative pressure value of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is the installation diagram of the automatic drainage device for the negative pressure buffer tank;

[0017] Figure 2 This is a schematic diagram of the structure of the automatic drainage device of the negative pressure buffer tank.

[0018] Legend: 1. Negative pressure buffer tank; 2. Vacuuming pipeline; 3. Venting pipeline; 4. Automatic drainage device; 5. Drainage pipeline; 6. Water outlet pipeline; 201. Vacuuming pipe; 202. First ball valve; 203. Vacuuming solenoid valve; 301. Venting pipe; 302. Venting solenoid valve; 401. Transmitter; 402. Float level switch; 403. Water storage tank; 501. Drain pipe; 502. Drainage solenoid valve; 601. Water outlet pipe; 602. Steel ball sealing one-way valve; 603. Second ball valve. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides an automatic drainage device for a negative pressure buffer tank, which effectively solves the problem that most of the current drainage methods for equipment are positive pressure drainage. However, when draining equipment or containers under negative pressure, due to the negative pressure in the drainage pipe, the accumulated water in the container cannot flow out of the atmosphere, but will suck in air. Therefore, it is necessary to stop the vacuum system and manually open the container drainage valve for drainage. This drainage method affects the continuity and efficiency of production. The present device can automatically complete the discharge of condensate in the negative pressure buffer tank without affecting the negative pressure value of the negative pressure pipeline, thereby improving the stability of the negative pressure value of the system.

[0020] Example

[0021] like Figure 1 and Figure 2As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that most of the current equipment drainage methods are positive pressure drainage, but in the drainage of equipment or containers under negative pressure, because there is negative pressure in the drainage pipe, the accumulated water in the container cannot flow out of the atmosphere, but will suck in air, so it is necessary to stop the vacuum system and manually open the container drainage valve for drainage. This drainage method affects the continuity of production and production efficiency. The overall idea is as follows: an automatic drainage device for a negative pressure buffer tank, comprising a negative pressure buffer tank 1, a vacuum pumping pipeline 2, a venting pipeline 3, an automatic drainage device 4, a drainage The negative pressure buffer tank 1 and the automatic drainage device 4 are connected through the vacuum pipeline 2 and the drainage pipeline 5. The vacuum pipeline 2 is designed on one side of the negative pressure buffer tank 1, and the drainage pipeline 5 is designed at the lower end of the negative pressure buffer tank 1. The venting pipeline 3 is arranged above the automatic drainage device 4, and the drainage pipeline 5 is arranged below the automatic drainage device 4. The automatic drainage device 4 includes a water storage tank 403. The water storage tank 403 is made of a cylindrical tank body made of stainless steel plate. A transmitter 401 and a float liquid level switch 402 are arranged on the water storage tank 403. A water outlet pipe 601 is arranged on the side, a drain pipe 501 is arranged at the bottom of the water storage tank 403, the venting pipeline 3 includes a venting pipe 301 and a venting solenoid valve 302 arranged thereon, one end of the venting pipe 301 is connected to the top of the water storage tank 403, the vacuuming pipeline 2 includes a vacuuming pipe 201 and a first ball valve 202 and a vacuuming solenoid valve 203 arranged thereon, one end of the vacuuming pipe 201 is connected to the top of the water storage tank 403, and the other end is connected to the negative pressure buffer tank 1, the drainage pipeline 5 includes a drainage pipe 501 and a drainage solenoid valve 502 arranged thereon, the drainage pipe 5 01 is connected to the bottom of the water storage tank 403 at one end, the water outlet pipeline 6 includes a water outlet pipe 601 and a steel ball sealing one-way valve 602 and a second ball valve 603 arranged thereon, one end of the water outlet pipe 601 is connected to the negative pressure buffer tank 1, and the other end is connected to the water storage tank 403, the air inlet of the steel ball sealing one-way valve 602 is installed on the same side of the negative pressure buffer tank 1, the water level control component is connected to the vacuum solenoid valve 203, the vent solenoid valve 302, the drain solenoid valve 502, the float liquid level switch 402, and the transmitter 401 through a cable, and the float liquid level switch 402 is a float type liquid level switch.

[0022] In view of the problems existing in the prior art, the utility model provides an automatic drainage device for a negative pressure buffer tank. The device can automatically discharge condensate from the negative pressure buffer tank without affecting the negative pressure value of the negative pressure pipeline, thereby improving the stability of the negative pressure value of the system.

[0023] Working principle:

[0024] When in use, a water outlet pipe 601 can be connected to the bottom of the negative pressure buffer tank, a steel ball sealing one-way valve 602 and a second ball valve 603 are installed on the water outlet pipe 601, and the other end is connected to the water inlet on the side of the water storage tank 403. A vacuum pipeline 2 is set on the side of the negative pressure buffer tank 1, and the first ball valve 202 and the vacuum solenoid valve 203 are installed on the pipe. The other end of the pipe is connected to the suction pipe port at the top of the water storage tank 403, and the vent pipe 301 is connected to the top of the water storage tank 403. The vent solenoid valve 302 is installed on the vent pipe 301, and the other end of the vent pipe 301 is directly connected to the atmosphere. A drain pipe 501 is connected to the bottom of the water storage tank 403, and a drain solenoid valve 502 is installed on the drain pipe 501. The other end of the drain pipe 501 is directly connected to the atmosphere. A float liquid level switch 402 is installed in the water storage tank 403 and connected to the transmitter 401 through a control cable;

[0025] When there is no pressure difference between the negative pressure buffer tank 1 and the water storage tank 403, the steel ball sealing one-way valve 602 is in the open state, and the water in the negative pressure buffer tank 1 flows into the water storage tank 403 through the outlet pipe 601. The water level of the water storage tank 403 rises to the detection position of the float liquid level switch 402. The float liquid level switch 402 feeds back information to the transmitter 401, and the venting solenoid valve 302 and the drain solenoid valve 502 are opened through the controller. The water storage tank 403 inhales air through the vent pipe, and the pressure difference between the water storage tank 403 and the negative pressure buffer tank 1 gradually increases. The steel ball of the steel ball sealing one-way valve 602 on the outlet pipe 601 closes the valve under the action of pressure. Ensure that the water tank 403 is drained under atmospheric pressure. When the water level of the water tank 403 drops to a position that cannot be detected by the float level switch 402, the float level switch 402 feeds back information to the transmitter 401, opens the vacuum solenoid valve 203 through the controller, closes the vent solenoid valve 302 and the drain solenoid valve 502, and evacuates the water tank 403 through the vacuum tube 201. The pressure difference between the water tank 403 and the negative pressure buffer tank 1 is gradually reduced, and the steel ball of the steel ball sealing one-way valve 602 installed on the outlet pipe 601 opens the valve under the action of the spring, and the water in the negative pressure buffer tank 1 flows into the water tank 403 through the outlet pipe 601.

[0026] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An automatic drainage device for a negative pressure buffer tank, comprising a negative pressure buffer tank (1), a vacuum pipeline (2), a venting pipeline (3), an automatic drainage device (4), a drainage pipeline (5), a water outlet pipeline (6) and a water level control component, wherein the negative pressure buffer tank (1) and the automatic drainage device (4) are connected via the vacuum pipeline (2) and the drainage pipeline (5), the vacuum pipeline (2) is designed on one side of the negative pressure buffer tank (1), and the drainage pipeline (5) is designed at the lower end of the negative pressure buffer tank (1), characterized in that: The venting pipeline (3) is arranged above the automatic drainage device (4), and the drainage pipeline (5) is arranged below the automatic drainage device (4). The automatic drainage device (4) comprises a water storage tank (403), and the water storage tank (403) is made of a stainless steel plate to form a cylindrical tank body; The water storage tank (403) is provided with a transmitter (401) and a float liquid level switch (402), a water outlet pipe (601) is provided on the side of the water storage tank (403), and a drainage pipe (501) is provided at the bottom of the water storage tank (403).

2. The automatic drainage device for a negative pressure buffer tank according to claim 1, characterized in that: The vent pipeline (3) comprises a vent pipe (301) and a vent solenoid valve (302) arranged thereon, and one end of the vent pipe (301) is connected to the top of the water storage tank (403).

3. The automatic drainage device for a negative pressure buffer tank according to claim 2, characterized in that: The vacuum pumping pipeline (2) comprises a vacuum pumping tube (201) and a first ball valve (202) and a vacuum pumping solenoid valve (203) arranged thereon; one end of the vacuum pumping tube (201) is connected to the top of the water storage tank (403), and the other end is connected to the negative pressure buffer tank (1).

4. The automatic drainage device for a negative pressure buffer tank according to claim 3, characterized in that: The drainage pipeline (5) comprises a drainage pipe (501) and a drainage solenoid valve (502) arranged thereon, and one end of the drainage pipe (501) is connected to the bottom of the water storage tank (403).

5. The automatic drainage device for a negative pressure buffer tank according to claim 4, characterized in that: The water outlet pipeline (6) comprises a water outlet pipe (601) and a steel ball sealing one-way valve (602) and a second ball valve (603) arranged thereon; one end of the water outlet pipe (601) is connected to the negative pressure buffer tank (1), and the other end is connected to the water storage tank (403); Wherein, the air inlet of the steel ball sealing one-way valve (602) is installed on the same side of the negative pressure buffer tank (1).

6. The automatic drainage device for a negative pressure buffer tank according to claim 3, characterized in that: The water level control assembly is connected to the vacuum solenoid valve (203), the venting solenoid valve (302), the drain solenoid valve (502), the float liquid level switch (402), and the transmitter (401) through cables. The float liquid level switch (402) is a float type liquid level switch.

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