Air compressor air-water positive pressure discharge auxiliary collection device
By designing an auxiliary collection device for positive pressure discharge of air compressors, and using air-water damping pipes and sound-absorbing pads for air-water separation and buffer pressure relief, the high cost problem caused by open discharge of air compressors is solved, and low-cost water-air separation and pressure relief effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南京恒生制药有限公司
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-30
AI Technical Summary
The high cost of existing air compressors due to open-emission requirements, especially the environmental requirements for high-pressure emissions, increases the overall investment cost of the project.
An auxiliary collection device for positive pressure discharge of air and water from an air compressor was designed, including a collection box, a pressure relief cover, an air-water damping pipe, and a sound-absorbing pad. The air-water damping pipe performs preliminary air-water separation and buffer pressure relief, while the sound-absorbing pad further separates the air and water. The separated water is discharged from the drain outlet, and the gas is discharged through the exhaust port, achieving near-normal pressure discharge.
It achieves water-air separation and pressure relief, reduces environmental requirements for emissions, reduces noise, simplifies installation steps, and lowers the overall project cost of the air compressor system.
Smart Images

Figure CN224432739U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an auxiliary collection device for positive pressure discharge of air and water from an air compressor, belonging to the technical field of air compressor equipment. Background Technology
[0002] Compressed air is a highly efficient and clean power source, widely used in various industries, including industrial production, energy, medical, and transportation. Applications include pharmaceutical filling lines, packaging (pneumatic sealing), bottle and can cleaning, and equipment driving. Because air compressors compress air during operation, the resulting high-pressure compressed air contains a significant amount of moisture. The air compressor unit has two sets of discharge valves: one set is the interstage discharge valve (between stages 1 and 2), a low-pressure discharge valve with a discharge pressure of approximately 2 kg; the other set is the high-pressure discharge valve for the generated air, with a discharge pressure of approximately 8 kg. The unit requires an open discharge environment, meaning it must be discharged into an open ditch or have independent pipes leading to an open area for each outlet. Otherwise, it will affect the normal operation of the air compressor unit, resulting in a high overall project investment cost. Utility Model Content
[0003] The purpose of this invention is to provide an auxiliary collection device for positive pressure discharge of air and water from an air compressor, in order to solve the technical problem that the requirement for open discharge in existing air compressors leads to high costs.
[0004] This utility model adopts the following technical solution: an auxiliary collection device for positive pressure discharge of air and water from an air compressor, comprising a collection box with an opening at the top and a pressure relief cover installed at the opening of the collection box. The pressure relief cover has an exhaust hole. An air-water damping pipe is connected to the side wall of the collection box, connecting the inside and outside of the collection box. The upper end of the air-water damping pipe is installed on the side wall of the collection box and is used to connect to the outlet pipe of the air compressor's discharge valve. The lower end of the air-water damping pipe contacts a sound-absorbing pad. A damping diaphragm is provided inside the air-water damping pipe. A water-permeable and air-permeable sound-absorbing pad is provided inside the collection box. The height of the sound-absorbing pad is higher than the lower end of the air-water damping pipe. A drain outlet is provided in the collection box below the sound-absorbing pad.
[0005] The bottom of the collection box is a tapered structure that tapers downwards, and the drain outlet is located at the bottom of the tapered structure.
[0006] The drain outlet is connected to a quick-connect fitting.
[0007] The upper part of the air-water damping pipe is bent and the lower part is a straight pipe structure. There are two air-water damping pipes, and both air-water damping pipes are integrally connected to the rear wall of the collection box.
[0008] The side wall of the collection box is equipped with a quick-connect air pipe. The number of quick-connect air pipes is equal to the number of air-water damping pipes, and each quick-connect air pipe is connected to the upper end of each air-water damping pipe.
[0009] The damping septum adopts a semi-circular structure, with each damping septum spaced apart from top to bottom, and adjacent damping septums arranged alternately from left to right.
[0010] The sound-absorbing pad is composed of multiple layers of corrugated pads stacked on top of each other; the sound-absorbing pad is made of nylon material.
[0011] The vent holes are arranged in a rectangular array in the middle of the pressure relief cover.
[0012] The top of the collection box has an open structure. The rear edge of the pressure relief cover is hinged and rotated on the collection box. The front edge of the pressure relief cover is provided with a lug, and the lug is provided with a locking element for locking onto the collection box.
[0013] The collection box, pressure relief cover, air-water damping pipe, and damping diaphragm are all made of 304 stainless steel, and the damping diaphragm is welded and fixed inside the air-water damping pipe.
[0014] The beneficial effects of this utility model are as follows: When in use, the outlet pipe of the air compressor's discharge valve is connected to the air-water damping pipe. The air and water from the air compressor enter the nylon sound-absorbing pad through the air-water damping pipe. The damping diaphragm inside the air-water damping pipe performs preliminary air-water separation and buffer pressure relief for low-pressure and high-pressure gases. The sound-absorbing pad reduces the noise of water vapor discharge, further separates the air and water, and prevents splashing. The separated water is discharged from the drain port at the bottom of the collection box, and the separated gas is discharged from the exhaust port on the pressure relief cover. This utility model's air compressor air-water positive pressure discharge auxiliary collection device is directly connected to the air compressor's discharge valve, enabling water-water separation and pressure relief. The discharge pressure is close to atmospheric pressure, allowing for open discharge. Therefore, it has low requirements for the discharge environment and reduces the overall project cost of the air compressor system.
[0015] As a preferred option, the quick-connect fittings installed on the drain outlet can be connected to the public discharge pipes or outlets on site, facilitating cleaning and installation.
[0016] As a preferred option, the air-water damping pipe adopts the form of a straight pipe with an elbow, which is integrated with the collection box, saving on-site installation steps.
[0017] As a preferred option, the quick-connect tubing can be quickly connected to the outlet pipe of the air compressor's discharge valve, making on-site installation simple.
[0018] As a preferred option, conventional pre-made nylon sound-absorbing pads are used and laid inside the collection box, which have good sound absorption, air-water separation and splash prevention effects.
[0019] As a preferred option, the pressure relief cover is hinged to the top of the collection box. The entire pressure relief cover can be opened and closed vertically and is equipped with a handle and a lug. During normal use, the pressure relief cover is closed to prevent possible splashing. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of an auxiliary collection device for positive pressure discharge of air and water from an air compressor according to an embodiment of this utility model;
[0021] Figure 2 yes Figure 1 Plan view of the pressure relief cover after it is opened;
[0022] Figure 3 yes Figure 1 Schematic diagram of the gas-water damping pipe;
[0023] Figure 4 yes Figure 3 Side view.
[0024] In the diagram: 1-Collection box, 2-Silencing pad, 3-Drain outlet, 3.1-Quick connector, 4-Pressure relief cover, 4.1-Exhaust port, 5-Air-water damping pipe, 5.1-Damping diaphragm, 6-Air pipe quick connector. Detailed Implementation
[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0026] like Figures 1 to 2 As shown, an embodiment of the air compressor positive pressure discharge auxiliary collection device of this utility model includes a collection box 1 with an opening at the top and a pressure relief cover 4 installed at the opening of the collection box 1. The pressure relief cover 4 has exhaust holes 4.1 arranged in a rectangular array in the middle of the pressure relief cover 4. An air-water damping pipe 5 is connected to the side wall of the collection box 1. The upper end of the air-water damping pipe 5 is installed on the side wall of the collection box 1 and is used to connect to the outlet pipe of the air compressor's discharge valve. The lower end of the air-water damping pipe 5 contacts a sound-absorbing pad 2. A damping diaphragm 5.1 is provided inside the air-water damping pipe 5. A water-permeable and air-permeable sound-absorbing pad 2 is provided inside the collection box. The height of the sound-absorbing pad 2 is higher than the lower end of the air-water damping pipe 5. The sound-absorbing pad 2 is composed of multiple layers of corrugated pads stacked on top of each other and is made of nylon material. A drain outlet 3 is provided below the sound-absorbing pad in the collection box.
[0027] The bottom of the collection box 1 is a tapered structure that tapers downwards, and the drain outlet 3 is located at the bottom of the tapered structure. A quick-connect connector 3.1 is connected to the drain outlet 3.
[0028] like Figures 3 to 4As shown, the air-water damping pipe 5 has an upper elbow and a lower straight pipe structure. There are two air-water damping pipes 5, both integrally connected to the rear side wall of the collection box 1. The side wall of the collection box 1 is equipped with quick-connect air hoses 6, the number of which is equal to the number of air-water damping pipes 5. The upper end of each air-water damping pipe 5 is connected to each quick-connect air hose 6. The damping baffles 5.1 adopt a semi-circular structure, with each damping baffle 5.1 spaced apart from top to bottom, and adjacent damping baffles 5.1 staggered horizontally.
[0029] The top of the collection box 1 has an open structure. The rear edge of the pressure relief cover 4 is hinged and rotated on the collection box 1. The front edge of the pressure relief cover 4 has a lug, and the lug has a locking element for locking onto the collection box. The collection box 1, pressure relief cover 4, air-water damping pipe 5, and damping diaphragm 5.1 are all made of 304 stainless steel. The damping diaphragm is welded and fixed inside the air-water damping pipe.
[0030] In this embodiment, when the air compressor positive pressure discharge auxiliary collection device is in use, the outlet pipes of the two sets of discharge valves of the air compressor main unit are connected to the quick-connect fittings of the air pipes of the two collection boxes respectively. The two outlet pipes of each set of discharge valves are connected to the two air-water damping pipes through the quick-connect fittings. The air and water of the air compressor enter the nylon sound-absorbing pad through the air-water damping pipes. The air-water damping pipes perform preliminary air-water separation and buffer pressure relief on the low-pressure gas and high-pressure gas. The sound-absorbing pad further separates the air and water, reduces the noise of water and gas discharge, and prevents splashing. The separated water is discharged from the drain port at the bottom of the collection box, and the separated gas is discharged from the exhaust port on the pressure relief cover.
[0031] The air compressor positive pressure discharge auxiliary collection device of this utility model is directly connected to the air compressor discharge valve, which can realize water-air separation and pressure relief, support a maximum discharge pressure of 0.9 MPa, and the discharge pressure is close to the atmospheric pressure. It can realize open discharge, so the requirements for the discharge environment are low, reducing the overall project cost of the air compressor system.
[0032] The above embodiment is a preferred embodiment of the present utility model. Various changes and modifications may be made to the present utility model without departing from the spirit and scope of the present utility model, and all such changes and modifications fall within the scope of the present utility model as claimed.
Claims
1. An auxiliary collection device for positive pressure discharge of air and water from an air compressor, characterized in that: It includes a collection box with an opening at the top and a pressure relief cover installed at the opening of the collection box. The pressure relief cover has an exhaust hole. The side wall of the collection box is connected to an air-water damping pipe that connects the inside and outside of the collection box. The upper end of the air-water damping pipe is installed on the side wall of the collection box and is used to connect to the outlet pipe of the air compressor's discharge valve. The lower end of the air-water damping pipe is in contact with a sound-absorbing pad. A damping diaphragm is provided inside the air-water damping pipe. A water-permeable and air-permeable sound-absorbing pad is provided inside the collection box. The height of the sound-absorbing pad is higher than the lower end of the air-water damping pipe. A drain outlet is provided in the collection box below the sound-absorbing pad.
2. The air compressor air-water positive pressure discharge auxiliary collection device according to claim 1, characterized in that: The bottom of the collection box is a tapered structure that tapers downwards, and the drain outlet is located at the bottom of the tapered structure.
3. The air compressor air-water positive pressure discharge auxiliary collection device according to claim 1, characterized in that: The drain outlet is connected to a quick-connect fitting.
4. The auxiliary collection device for positive pressure discharge of air and water from an air compressor according to claim 1, characterized in that: The upper part of the air-water damping pipe is bent and the lower part is a straight pipe structure. There are two air-water damping pipes, and both air-water damping pipes are integrally connected to the rear wall of the collection box.
5. The air compressor air-water positive pressure discharge auxiliary collection device according to claim 1, characterized in that: The side wall of the collection box is equipped with a quick-connect air pipe. The number of quick-connect air pipes is equal to the number of air-water damping pipes, and each quick-connect air pipe is connected to the upper end of each air-water damping pipe.
6. The auxiliary collection device for positive pressure discharge of air and water from an air compressor according to claim 1, characterized in that: The damping septum adopts a semi-circular structure, with each damping septum spaced apart from top to bottom, and adjacent damping septums arranged alternately from left to right.
7. The auxiliary collection device for positive pressure discharge of air and water from an air compressor according to claim 1, characterized in that: The sound-absorbing pad is composed of multiple layers of corrugated pads stacked on top of each other; the sound-absorbing pad is made of nylon material.
8. The auxiliary collection device for positive pressure discharge of air and water from an air compressor according to claim 1, characterized in that: The vent holes are arranged in a rectangular array in the middle of the pressure relief cover.
9. The auxiliary collection device for positive pressure discharge of air and water from an air compressor according to claim 1, characterized in that: The top of the collection box has an open structure. The rear edge of the pressure relief cover is hinged and rotated on the collection box. The front edge of the pressure relief cover is provided with a lug, and the lug is provided with a locking element for locking onto the collection box.
10. The air compressor air-water positive pressure discharge auxiliary collection device according to claim 1, characterized in that: The collection box, pressure relief cover, air-water damping pipe, and damping diaphragm are all made of 304 stainless steel, and the damping diaphragm is welded and fixed inside the air-water damping pipe.