Negative pressure suction machine for oral hospitals, clinics and pet hospitals

Abstract

The invention relates to a negative pressure suction machine for oral hospitals, clinics and pet hospitals, which is used for oral hospitals and pet hospitals and is characterized in that an upper water storage tank and a lower water storage tank are respectively mounted on a back plate in a case up and down, and a D automatic valve is mounted at a water inlet of the upper water storage tank; a water outlet of the upper water storage tank is connected with a water inlet of the lower water storage tank through a pipeline, an automatic valve A is installed on the pipeline, an automatic valve C is installed at a water outlet of the lower water storage tank, and an automatic valve B is installed at an exhaust port of the lower water storage tank. And a negative pressure opening of the piston type compressor is connected with a negative pressure opening of the upper water storage tank through a pipeline. The negative pressure suction machine has the advantages of low noise during working, low power, energy conservation, environmental protection, high negative pressure value, simple structure, low manufacturing cost and the like, and the defects of two conventional negative pressure suction machines in the market are well overcome.

Description

Technical Field

[0001] The present invention relates to a negative pressure suction machine for dental hospitals, clinics and pet hospitals, specifically a negative pressure suction machine that generates a suction effect by a piston compressor. Background Art

[0002] There are two conventional negative pressure suction machines on the market. One is a negative pressure suction machine in the form of a blower. This kind of negative pressure suction machine has disadvantages such as high noise, low negative pressure value, high power and high manufacturing cost during operation. The other is a negative pressure suction machine made by using a water ring vacuum pump. This kind of negative pressure suction machine needs to continuously inject tap water into the water ring vacuum pump to generate suction during operation. Using this kind of equipment has disadvantages such as low energy efficiency, environmental unfriendliness and high manufacturing cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a negative pressure suction machine for dental hospitals, clinics and pet hospitals. It adopts an upper water storage tank and a lower water storage tank, and four automatic valves realize the automatic control of the water inlet, water outlet, exhaust port of the upper water storage tank and the lower water storage tank and the stable and efficient operation of the piston compressor through a control circuit, so that the noise is small, the power is small and the negative pressure is high during operation.

[0004] Based on a chassis, an upper water storage tank, a lower water storage tank, an A automatic valve, a B automatic valve, a C automatic valve, a D automatic valve, a piston compressor and a control circuit, the technical solution of the present invention is characterized in that the upper water storage tank and the lower water storage tank are respectively installed on the back plate inside the chassis up and down. A D automatic valve is installed at the water inlet of the upper water storage tank. The water outlet of the upper water storage tank is connected to the water inlet of the lower water storage tank through a pipeline, and an A automatic valve is installed on the pipeline. A C automatic valve is installed at the water outlet of the lower water storage tank, and a B automatic valve is installed at the exhaust port of the lower water storage tank. The piston compressor is installed at the bottom inside the chassis, and the negative pressure port of the piston compressor is connected to the negative pressure port of the upper water storage tank through a pipeline.

[0005] When the negative pressure suction machine of the present invention is initialized, the control circuit controls the B automatic valve and the C automatic valve to be in the closed state, and the D automatic valve and the A automatic valve to be in the open state. After the initialization is completed, the control circuit controls the D automatic valve to close, and then waits for the water in the upper water storage tank to drain into the lower water storage tank. Then the control circuit controls the A automatic valve to close, and the B automatic valve and the C automatic valve to open until the water in the lower water storage tank is drained. Repeat the above control process and cycle until the machine stops working.

[0006] The working principle of the present invention is that since a piston compressor cannot be directly used for pumping water, two water storage tanks, namely an upper water storage tank and a lower water storage tank, as well as four control valves, namely A automatic valve, B automatic valve, C automatic valve, and D automatic valve, are installed inside the machine case. When the machine works, the B and C automatic valves are closed, and the A and D automatic valves are opened. At this time, the machine will first evacuate the air in the two water storage tanks, and at the same time, the connecting pipe connected to the outside of the machine will also generate suction. If the machine keeps working, after working for a period of time, the control circuit inside the machine will automatically close the D automatic valve through the internal program, drain the water in the upper water storage tank into the lower water storage tank, then close the A automatic valve, and then open the B and C automatic valves to drain all the water in the lower water storage tank inside the machine, and so on in a cycle. If the machine stops working, all the valves inside the machine will be opened to drain all the water stored in the tank.

[0007] The advantages of the present invention are low noise, low power, energy conservation and environmental protection, high negative pressure value, simple structure, low manufacturing cost, etc., which well solve the deficiencies of two conventional negative pressure suction machines on the market. Brief Description of the Drawings

[0008] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0009] Figure 2 is a schematic diagram of the internal structure of the present invention. Detailed Description of the Invention

[0010] According to Figure 1 , Figure 2 As shown, on the basis of the machine case 1, upper water storage tank 2, lower water storage tank 3, A automatic valve 4, B automatic valve 5, C automatic valve 6, D automatic valve 7, piston compressor 8, and control circuit 9, the present invention is characterized in that the upper water storage tank 2 and the lower water storage tank 3 are respectively installed on the back plate inside the machine case 1 from top to bottom. A D automatic valve 7 is installed at the water inlet of the upper water storage tank 2. The water outlet of the upper water storage tank 2 is connected to the water inlet of the lower water storage tank 3 through a pipeline, and an A automatic valve 4 is installed on the pipeline. A C automatic valve 6 is installed at the water outlet of the lower water storage tank 3, and a B automatic valve 5 is installed at the exhaust port of the lower water storage tank 3. The piston compressor 8 is installed at the bottom inside the machine case, and the negative pressure port of the piston compressor 8 is connected to the negative pressure port of the upper water storage tank 2 through a pipeline.

[0011] When the described negative pressure suction machine is initialized, the control circuit 9 controls the automatic valve B 5 and the automatic valve C 6 to be in the closed state, and the automatic valve D 7 and the automatic valve A 4 to be in the open state. After the initialization is completed, the control circuit 9 controls the automatic valve D 7 to close, and then waits for the water in the upper water storage tank 2 to drain into the lower water storage tank 3. Then, the control circuit 9 controls the automatic valve A 4 to close, and the automatic valves B 5 and C 6 to open until the water in the lower water storage tank 3 is drained. Repeat the above control process and cycle until the machine stops working.

Claims

1. A negative pressure suction machine for use in dental hospitals, clinics and pet hospitals, comprising a housing (1), an upper water storage tank (2), a lower water storage tank (3), an automatic valve A (4), an automatic valve B (5), an automatic valve C (6), an automatic valve D (7), a piston compressor (8), and a control circuit (9), characterized in that: The upper water storage tank (2) and the lower water storage tank (3) are respectively installed on the back plate in the case (1), and a D automatic valve (7) is installed at the water inlet of the upper water storage tank (2). The water outlet of the upper water storage tank (2) is connected to the water inlet of the lower water storage tank (3) through a pipeline, and an A automatic valve (4) is installed on the pipeline. The water outlet of the lower water storage tank (3) is installed with a C automatic valve (6), and the exhaust port of the lower water storage tank (3) is installed with a B automatic valve (5). The piston compressor (8) is installed at the bottom of the case, and the negative pressure port of the piston compressor (8) is connected to the negative pressure port of the upper water storage tank (2) through a pipeline.

2. A negative pressure suction machine for use in dental hospitals, clinics and pet hospitals according to claim 1, characterized in that: When the negative pressure suction machine is initialized, the control circuit (9) controls the automatic valves B (5) and C (6) to be in a closed state, and the automatic valves D (7) and A (4) to be in an open state. After the initialization is completed, the control circuit (9) controls the automatic valve D (7) to be closed, and then waits for the water in the upper water storage tank (2) to be drained into the lower water storage tank (3). Then, the control circuit (9) controls the automatic valve A (4) to be closed, and the automatic valves B (5) and C (6) to be opened, until the water in the lower water storage tank (3) is drained. The above control process is repeated in this cycle until the machine stops working.

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