Constant pressure type vacuum drainage device

Abstract

The utility model discloses a constant-pressure vacuum drainage device, which belongs to the technical field of vacuum pump buffer tanks and comprises a vacuum buffer tank connected with a vacuum pump. The device is characterized in that a liquid discharge pipe is arranged at the bottom of the vacuum buffer tank, the liquid discharge pipe is connected with a liquid storage pipe through a first stop valve, and one end of the liquid storage pipe is communicated with the vacuum buffer tank through a second stop valve and a pipeline; one-way valves are arranged at the other ends of the liquid storage pipes; the liquid storage pipe located at the end of the second stop valve is provided with an air blowing pipe, an air port of the first stop valve, an air port of the second stop valve and the air blowing pipe are all connected with an air outlet of an electromagnetic valve through pipelines, and the electromagnetic valve is connected with an air source. The device has the advantages that the vacuum buffer tank and the liquid storage pipe are in a constant-pressure state, cutting liquid retained in the vacuum buffer tank flows into the liquid storage pipe by means of gravity, stability of the vacuum degree in the vacuum buffer tank in the liquid discharging process is guaranteed, and the cutting liquid in the liquid discharging pipe is pressed by the air blowing pipe and is discharged through the one-way valve.

Description

Technical field:

[0001] The utility model belongs to the technical field of vacuum pump buffer tanks, and more specifically relates to a constant pressure vacuum drainage device. Background technology:

[0002] The vacuum pump used by the glass engraving machine to fix the glass in the glass industry requires cutting fluid to be used on the electric spindle used at the vacuum end that contacts the glass. The vacuum effect will cause the cutting fluid to enter the vacuum pump. Generally, a vacuum tank buffer tank is set at the front end of the vacuum pump.

[0003] Due to the large number of equipment, more cutting fluid enters the vacuum tank buffer tank, the vacuum tank buffer tank shakes, and there is a risk of pipeline breakage. The product quality is unstable due to unstable vacuum degree, and the product is reworked or defective, which wastes the subsequent inspection labor cost.

[0004] Therefore, it is necessary to drain the cutting fluid of the vacuum tank buffer tank regularly. The existing vacuum tank buffer tank drainage process will affect the vacuum degree of the vacuum pipeline, resulting in unstable vacuum degree. Utility model content:

[0005] In order to solve the above problems and overcome the shortcomings of the prior art, the utility model provides a constant pressure vacuum drainage device;

[0006] The first technical problem to be solved is that the existing vacuum tank buffer tank will affect the vacuum degree of the vacuum pipeline during the drainage process, resulting in unstable vacuum degree.

[0007] The specific technical solution of the utility model to solve the above technical problems is as follows: the constant pressure vacuum drainage device comprises a vacuum buffer tank connected to a vacuum pump; the characteristics are as follows: a liquid discharge pipe is arranged at the bottom of the vacuum buffer tank, the liquid discharge pipe is connected to a liquid storage pipe through a first stop valve, one end of the liquid storage pipe is connected to the vacuum buffer tank through a second stop valve and a pipeline; a one-way valve is arranged at the other end of the liquid storage pipe; the liquid storage pipe at the end of the second stop valve is provided with an air blowing pipe,

[0008] An air port of the first stop valve, an air port of the second stop valve and the air blowing pipe are all connected to an air outlet of the electromagnetic valve through a pipeline, and the electromagnetic valve is connected to an air source.

[0009] Furthermore, the lower end of the vacuum buffer tank is connected to a use device via a pipeline.

[0010] Furthermore, another air port of the first stop valve and another air port of the second stop valve are connected to another air outlet of the solenoid valve through a pipeline.

[0011] Furthermore, the first stop valve and the second stop valve are driven to close or open by compressed air.

[0012] Furthermore, the liquid storage tube is made of UPVC material.

[0013] The beneficial effects of the utility model are:

[0014] One advantage of the utility model is that a liquid storage pipe connected to the vacuum buffer tank is provided, which ensures that the vacuum buffer tank and the liquid storage pipe are in a constant pressure state. In this way, the cutting fluid retained in the vacuum buffer tank will flow into the liquid storage pipe by gravity, solving the problem that the cutting fluid retained in the vacuum buffer tank causes the vacuum degree in the vacuum buffer tank to be unstable, resulting in unstable product quality.

[0015] One advantage of the utility model is that a first stop valve, a second stop valve and an air blow pipe which are simultaneously controlled by an electromagnetic valve are provided, and the vacuum buffer tank and the liquid storage pipe are isolated from each other, thereby ensuring the stability of the vacuum degree in the vacuum buffer tank during the discharge process. At the same time, the air blow pipe applies pressure to the cutting fluid in the discharge pipe and discharges it through the one-way valve. Description of the drawings:

[0016] Attached Figure 1 It is a schematic diagram of the structure of the utility model; in the accompanying drawings:

[0017] 1. Vacuum buffer tank; 2. Vacuum pump; 3. Second stop valve; 4. Solenoid valve; 5. First stop valve; 6. Air blowing pipe; 7. Drain pipe; 8. One-way valve. Specific implementation method:

[0018] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "rear", "lower left", "upper right", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] The specific implementation mode of the utility model: the constant pressure vacuum drainage device comprises a vacuum buffer tank 1 connected to a vacuum pump 2; the characteristics are as follows: a liquid discharge pipe is arranged at the bottom of the vacuum buffer tank 1, the liquid discharge pipe is connected to a liquid storage pipe 7 through a first stop valve 5, one end of the liquid storage pipe 7 is connected to the vacuum buffer tank 1 through a second stop valve 3 and a pipeline; a one-way valve 8 is arranged at the other end of the liquid storage pipe 7; the liquid storage pipe 7 at the end of the second stop valve 3 is provided with an air blowing pipe 6,

[0020] An air port of the first stop valve 5, an air port of the second stop valve 3 and the air blowing pipe 6 are all connected to an air outlet of the solenoid valve 4 through a pipeline, and the solenoid valve 4 is connected to the air source.

[0021] Furthermore, the lower end of the vacuum buffer tank 1 is connected to a use device through a pipeline.

[0022] Furthermore, another air port of the first stop valve 5 and another air port of the second stop valve 3 are connected to another air outlet of the solenoid valve 4 through a pipeline.

[0023] Furthermore, the first stop valve 5 and the second stop valve 3 are driven to close by compressed air.

[0024] Furthermore, the liquid storage tube 7 is made of UPVC material.

[0025] It should be noted that the utility model is a constant pressure vacuum drainage device. When working,

[0026] 1. During normal use, the first stop valve 5 and the second stop valve 3 are both in an open state, and a one-way valve 8 is provided on the liquid storage pipe 7. One end of the liquid storage pipe 7 is connected to the vacuum buffer tank 1 through a pipeline, thereby ensuring that the vacuum buffer tank 1 and the liquid storage pipe 7 are in a constant pressure state. In this way, the cutting fluid retained in the vacuum buffer tank 1 will flow into the liquid storage pipe 7 by gravity, which solves the problem of cutting fluid retained in the vacuum buffer tank 1. When a large amount of cutting fluid enters the vacuum buffer tank, the vacuum buffer tank shakes, and there is a risk of pipeline breakage, resulting in unstable vacuum in the vacuum buffer tank 1, causing unstable product quality;

[0027] 2. When the cutting fluid needs to be discharged, the solenoid valve 4 is opened, and the gas from the gas source enters the first stop valve 5, the second stop valve 3 and the air blowing pipe 6 through the pipeline.

[0028] The first stop valve 5 and the second stop valve 3 are closed by air pressure. At this time, the vacuum buffer tank 1 and the liquid storage pipe 7 are isolated from each other, ensuring the stability of the vacuum degree in the vacuum buffer tank 1 during the discharge process. At the same time, the air blowing pipe 6 pressurizes the cutting fluid in the vacuum buffer tank 1 and discharges it through the one-way valve 8.

[0029] 3. Finally, the flow direction of the gas from the gas source is switched by the solenoid valve 4, and the gas enters through the other gas port of the first stop valve 5 and the other gas port of the second stop valve 3, and reversely drives the first stop valve 5 and the second stop valve 3 to be in the open state again, and a one-way valve 8 is provided on the liquid storage pipe 7, and one end of the liquid storage pipe 7 is connected with the vacuum buffer tank 1 through a pipeline, thereby ensuring that the vacuum buffer tank 1 and the liquid storage pipe 7 are in a constant pressure state and enter the next cycle.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A constant pressure vacuum drainage device, comprising a vacuum buffer tank (1) connected to a vacuum pump (2); characterized in that: A liquid discharge pipe is provided at the bottom of the vacuum buffer tank (1), the liquid discharge pipe is connected to a liquid storage pipe (7) via a first stop valve (5), one end of the liquid storage pipe (7) is connected to the vacuum buffer tank (1) via a second stop valve (3) and a pipeline; a one-way valve (8) is provided at the other end of the liquid storage pipe (7); an air blowing pipe (6) is provided at the end of the second stop valve (3), An air port of the first stop valve (5), an air port of the second stop valve (3) and the air blowing pipe (6) are all connected to an air outlet of the electromagnetic valve (4) through a pipeline, and the electromagnetic valve (4) is connected to an air source.

2. The constant pressure vacuum drainage device according to claim 1, characterized in that The lower end of the vacuum buffer tank (1) is connected to a use device via a pipeline.

3. The constant pressure vacuum drainage device according to claim 1, characterized in that Another air port of the first stop valve (5) and another air port of the second stop valve (3) are connected to another air outlet of the solenoid valve (4) through a pipeline.

4. The constant pressure vacuum drainage device according to claim 1, characterized in that The first stop valve (5) and the second stop valve (3) are driven to close or open by compressed air.

5. The constant pressure vacuum drainage device according to claim 1, characterized in that The liquid storage pipe (7) is made of UPVC material.

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