Vacuum pump simulator

Abstract

The utility model discloses a vacuum pump simulator which is a cylinder, the first bottom surface of the cylinder is connected with a high-pressure area, the second bottom surface of the cylinder is connected with a low-pressure area, and the vacuum pump simulator comprises a plurality of layers of transparent lamp panels and a control chip; wherein each layer of lamp panel is parallel to two bottom surfaces of the cylinder; each layer of lamp panel comprises a transparent bottom plate and a plurality of lamp beads; each lamp bead is connected to one output pin of the control chip, and the control chip is used for controlling the state of the lamp beads according to the amount of gas in the vacuum pump simulator. The vacuum pump gas state display device can display the vacuum pump gas state.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a vacuum pump simulator. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the utility model recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

[0003] A vacuum pump is a machine that creates a vacuum. It can discharge or absorb air from a closed or semi-closed space to achieve a relative vacuum in the local space. Common vacuum pumps include reciprocating vacuum pumps, water ring pumps, molecular pumps, rotary vane vacuum pumps, piston vacuum pumps, swing piston vacuum pumps, diaphragm vacuum pumps, linear vacuum pumps, etc. There are many types.

[0004] The vacuum pump consists of two parts: the motor and the pump body. In the ordinary vacuum pump, the motor drives the pump shaft to rotate through a belt; in the direct-connected vacuum pump, the motor is directly connected to the pump shaft without an intermediate transmission link. The vacuum pump uses the principle of gas expansion, compression, and discharge to extract gas from the container. The vacuum pump uses a mechanical method to periodically change the volume of the suction chamber in the pump, so that the gas in the container continuously expands into the suction chamber through the air inlet of the pump, and then is discharged from the pump through the exhaust port through compression. There are three ways to change the volume of the suction chamber in the pump: piston reciprocating, stator, and rotary vane, which are called reciprocating mechanical pumps, stator mechanical pumps, and rotary vane mechanical pumps, respectively. In practical applications, rotary vane vacuum pumps are more commonly used.

[0005] In the prior art, the vacuum condition inside the vacuum pump is usually measured by a pressure gauge and a vacuum gauge. The simulation of the internal condition of the vacuum pump is usually to simulate the pressure value or the vacuum value, with only two constantly changing analog values ​​for simulation. However, using only the pressure value or the vacuum value to simulate the internal condition of the vacuum pump cannot effectively display the internal gas exhaust situation, which is very unintuitive. When these two values ​​change disproportionately, the simulation method causes the operator to be unable to understand the internal condition of the vacuum pump, resulting in a misjudgment of the state. Utility Model Content

[0006] The utility model embodiment provides a vacuum pump simulator for displaying the state of vacuum pump gas. The vacuum pump simulator is a cylinder, the first bottom surface of the cylinder is connected to the high pressure area, and the second bottom surface of the cylinder is connected to the low pressure area. The vacuum pump simulator includes: a multi-layer transparent light board and a control chip; wherein,

[0007] Each layer of light panels is parallel to the two bottom surfaces of the cylinder;

[0008] Each layer of light board includes a transparent bottom plate and multiple light beads;

[0009] Each lamp bead is connected to an output pin of a control chip, and the control chip is used to control the state of the lamp bead according to the amount of gas inside the vacuum pump simulator.

[0010] In an embodiment of the utility model, a vacuum pump simulator with a cylindrical structure includes a multi-layer transparent lamp panel and a control chip. The light panel is transparent so that users can observe the state of the lamp beads (bright or dark), and the control chip can control the state of the lamp beads according to the amount of gas inside the vacuum pump simulator, so that different lamp beads display different states according to the amount of gas inside the vacuum pump simulator, thereby achieving the purpose of displaying the state of the vacuum pump gas through the states of different lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0012] Figure 1 The overall structure of the vacuum pump simulator in the embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of each layer of light panels in the embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the first lamp group in the embodiment of the utility model;

[0015] Figure 4 is a schematic diagram of the second lamp group in an embodiment of the utility model;

[0016] Figure 5 It is a schematic diagram of a horizontal arrangement of a vacuum pump simulator in an embodiment of the utility model;

[0017] Figure 6 This is a connection diagram of the control chip and the main control chip in the cascade control embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in conjunction with the accompanying drawings. Here, the illustrative embodiment of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0019] Figure 1 The overall structure of the vacuum pump simulator in the embodiment of the utility model is as follows: Figure 1As shown, the vacuum pump simulator is a cylinder, the first bottom surface 1 of the cylinder is connected to the high pressure area, and the second bottom surface 2 of the cylinder is connected to the low pressure area. The vacuum pump simulator includes: a multi-layer transparent light board and a control chip; wherein,

[0020] Each layer of light panels is parallel to the two bottom surfaces of the cylinder;

[0021] Each layer of light board includes a transparent bottom plate and multiple light beads;

[0022] Each lamp bead is connected to an output pin of a control chip, and the control chip is used to control the state of the lamp bead according to the amount of gas inside the vacuum pump simulator.

[0023] In one embodiment, the base plate is a thin film circuit board, and the lamp beads are LED lamp beads.

[0024] Figure 2 This is a schematic diagram of the structure of each layer of the light board in the embodiment of the utility model. In the embodiment of the utility model, there is a single-layer loop hole 3 in the center of the cylinder, and the single-layer loop hole in the middle of the bottom plate coincides with the center of the cylinder. The control chip is connected to the main control chip through the signal line passing through the single-layer loop hole. The bottom plate is transparent, and the lamp beads are placed on a transparent film circuit board, which is convenient for human eyes to observe the brightness of the lamp beads through the multi-layer circuit board.

[0025] In one embodiment, a plurality of lamp beads are divided into a plurality of lamp groups; each lamp group 4 corresponds to a control chip.

[0026] In one embodiment, the plurality of lamp groups include a plurality of first lamp groups and a plurality of second lamp groups, the first lamp groups and the second lamp groups are arranged at intervals, and the number of lamp beads in the first lamp group is greater than the number of lamp beads in the second lamp group.

[0027] In one embodiment, the outer contour of the bottom plate is a circle, the first lamp groups are arranged on the diameter of the circle, and the angles between the first lamp groups are preset fixed angles; and a second lamp group is arranged between every two first lamp groups.

[0028] In the embodiment of the utility model, the outer contour of the circle is determined according to the size of the vacuum pump, for example, the outer diameter of the circle is 10 cm, and the diameter of the center hole is 1 cm, which can be changed according to the actual situation. The single-layer loop hole is reserved as a small hole, and no lamp beads are arranged. The preset fixed angle can be determined according to the actual situation, for example, 18°. The smaller the preset fixed angle, the more lamp beads are arranged, until the circular circuit board is fully arranged. When arranged at 18°, 11 first lamp groups can be arranged. Figure 3 This is a schematic diagram of the first lamp group in the embodiment of the utility model. In each first lamp group, multiple lamp beads are arranged in a straight line. The second lamp group is used to fill the gap between the first lamp groups and is arranged at the same preset fixed angle as the first lamp groups, so that the entire circular circuit board is filled with lamp groups. Figure 4It is a schematic diagram of the second lamp group in the embodiment of the utility model.

[0029] In one embodiment, the vacuum pump simulator is arranged vertically or horizontally. Figure 1 It is a vertical vacuum pump simulator. Figure 5 It is a schematic diagram of a horizontally arranged vacuum pump simulator in an embodiment of the present utility model.

[0030] In one embodiment, the control chip is used to: after receiving the state of each lamp bead determined by the main control chip, control the switch of each lamp bead through serial shift read and write operations, wherein the state includes bright or dark, and the state of each lamp bead is determined by the main control chip according to the amount of gas inside the vacuum pump simulator.

[0031] For a vertically arranged vacuum pump simulator, the gas distribution is handled from bottom to top. When the vacuum pump simulator is 100% filled with gas, all LED lamp beads are lit. As the vacuum is pumped, the gas is gradually discharged from the vacuum pump simulator. The top gas is discharged the fastest, and the top LED lamp beads go out first. After the target vacuum degree is reached, all the gas is discharged equivalently and all the LED lamp beads go out.

[0032] For a horizontally arranged vacuum pump simulator, as the vacuum process progresses, the pressure decreases gradually, the vacuum degree increases gradually, the upper gas is discharged first, and the upper LED lamp beads are extinguished first, until the target vacuum degree is reached, all the gas is discharged equivalently, and all the LED lamp beads are extinguished.

[0033] In one embodiment, the status of each lamp bead is sent by the main control chip to the control chip using the SPI interface of the single-chip microcomputer;

[0034] The control chip is a high-speed serial-to-parallel 74HC595D chip.

[0035] In one embodiment, a plurality of control chips are cascaded for control. Figure 6 This is a connection diagram of the control chip 5 and the main control chip 6 of the cascade control in the embodiment of the utility model, wherein the main control chip can adopt a CH32 main control chip, and the control chip is a high-speed serial-to-parallel 74HC595D chip.

[0036] The use of high-speed serial-to-parallel 74HC595D chips can minimize the number of interface pins between the chip and the CH32 main control chip, thereby saving valuable controller resources. By connecting the QH' pin of the leftmost 74HC595D chip to the SER signal of the next 74HC595D chip, cascade control of multiple 74HC595D chips is achieved. Through the OC#, RCLK, SRCLR#, SRCLK, and SER signal interfaces, the CH32 main control chip can directly control the status of the lamp beads of multiple lamp groups. Specifically, by sending the status of each lamp bead to the control chip of the vacuum pump simulator, the control chip independently controls the switch of each lamp bead of each lamp group to display the amount of gas inside the vacuum pump simulator.

[0037] To sum up, in the embodiment of the utility model, the SPI interface of the single-chip microcomputer is used to control multiple high-speed serial-parallel 74HC595D chips, so as to arrange multiple LED light groups in different ways to form a vacuum pump gas shape. The main control chip controls the lighting of the LED lamp beads to display the state of the vacuum pump simulator gas. In addition, the vacuum degree of the vacuum pump simulator and other information can be determined according to the state of the vacuum pump simulator gas.

[0038] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A vacuum pump simulator, characterized in that: The vacuum pump simulator is a cylinder, the first bottom surface of the cylinder is connected to the high pressure area, and the second bottom surface of the cylinder is connected to the low pressure area. The vacuum pump simulator includes: a multi-layer transparent light board and a control chip; wherein, Each layer of light panels is parallel to the two bottom surfaces of the cylinder; Each layer of light board includes a transparent bottom plate and multiple light beads; Each lamp bead is connected to an output pin of a control chip, and the control chip is used to control the state of the lamp bead, and the state of the lamp bead is used to characterize the amount of gas inside the vacuum pump simulator.

2. The vacuum pump simulator according to claim 1, characterized in that Multiple lamp beads are divided into multiple lamp groups; each lamp group corresponds to a control chip.

3. The vacuum pump simulator according to claim 2, characterized in that The plurality of lamp groups include a plurality of first lamp groups and a plurality of second lamp groups. The first lamp groups and the second lamp groups are arranged at intervals, and the number of lamp beads in the first lamp group is greater than the number of lamp beads in the second lamp group.

4. The vacuum pump simulator according to claim 3, characterized in that: The outer contour of the bottom plate is a circle, the first lamp groups are arranged on the diameter of the circle, and the angles between the first lamp groups are preset fixed angles; a second lamp group is arranged between every two first lamp groups.

5. The vacuum pump simulator according to claim 1, characterized in that: The vacuum pump simulator is arranged vertically or horizontally.

6. The vacuum pump simulator according to claim 2, characterized in that: There is a single-layer loop hole in the center of the cylinder, and the single-layer loop hole in the middle of the bottom plate coincides with the center of the cylinder, and the control chip is connected to the main control chip through the signal line passing through the single-layer loop hole; The control chip is used to: control the switch of each lamp bead after receiving the state of each lamp bead determined by the main control chip, wherein the state includes light or dark, and the state of each lamp bead is determined by the main control chip according to the amount of gas inside the vacuum pump simulator.

7. The vacuum pump simulator according to claim 6, characterized in that The status of each lamp bead is sent from the main control chip to the control chip using the microcontroller SPI interface; The control chip is a high-speed serial-to-parallel 74HC595D chip.

8. The vacuum pump simulator according to claim 6, characterized in that: Multiple control chips are cascaded for control.

9. The vacuum pump simulator according to claim 1, characterized in that: The bottom plate is a thin film circuit board.

10. The vacuum pump simulator according to claim 1, characterized in that: The lamp beads are LED lamp beads.

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