A new control system for air compressor loading and unloading

Abstract

The utility model discloses a kind of new control systems of air compressor loading and unloading, including differential pressure switch, high-pressure pipeline and low-pressure pipeline, the P1 port and P2 port of differential pressure switch are connected high-pressure pipeline and low-pressure pipeline respectively, high-pressure pipeline installs air filter a and air filter b, high-pressure gas enters the P1 port of differential pressure switch in turn through air filter a and air filter b, low-pressure pipeline installs air filter c and air filter d, low-pressure gas enters the P2 port of differential pressure switch in turn through air filter c and air filter d. The new control system of air compressor loading and unloading, utilize the condition that the internal air pressure of high-pressure pipeline and low-pressure pipeline is higher than external environment air pressure, cooperate the switching of valve, make airflow after filtration to flow to another side, and the air filter of one side pipeline is cleaned by back flushing, to reach the purpose of protecting differential pressure switch and air filter online cleaning.

Description

Technical Field

[0001] This utility model relates to an air compressor loading and unloading control system. Background Technology

[0002] Currently, the pneumatic pressure switch used for loading and unloading control on overhead air compressors has drawbacks such as inconvenient pressure adjustment, cumbersome control methods, and high spare parts costs. Therefore, the intake valve is modified by removing the existing pneumatic pressure switch and vent valve module and installing a new electrically controlled differential pressure switch. This achieves convenient pressure adjustment, reduced failure rate, and lower spare parts costs. However, the gas entering the pressure switch contains impurities such as dust, particulate matter, fibers, and oil. Differential pressure switches typically trigger operation by detecting the pressure difference between the two sides. Impurities entering the sensor's pressure guide tube, diaphragm, or mechanical contacts can cause blockages, hindering pressure transmission and affecting detection accuracy. Therefore, technical improvements are needed to the existing loading and unloading control system for air compressors. Utility Model Content

[0003] The purpose of this invention is to provide a new control system for loading and unloading air compressors to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A new control system for loading and unloading an air compressor includes a differential pressure switch, a high-pressure pipeline, and a low-pressure pipeline. The P1 and P2 ports of the differential pressure switch are respectively connected to the high-pressure pipeline and the low-pressure pipeline. The high-pressure pipeline is equipped with air filter a and air filter b, and high-pressure gas enters the P1 port of the differential pressure switch sequentially through air filter a and air filter b. The low-pressure pipeline is equipped with air filter c and air filter d, and low-pressure gas enters the P2 port of the differential pressure switch sequentially through air filter c and air filter d.

[0006] As a further embodiment of this utility model: air filter a and air filter c are primary filters, air filter b and air filter d are secondary filters, and air filter a, air filter c, air filter b and air filter d are all air filters with the same structure;

[0007] An air filter includes a filter housing, an air inlet, an air outlet, a filter element, and a waste discharge port. The filter element is fixed inside the filter housing. One side of the filter housing is connected to the air inlet, the filter element is connected to the air outlet, and a waste discharge port is provided at the bottom of the filter housing.

[0008] As a further embodiment of this utility model: the discharge ports of the air filter a, air filter c, air filter b and air filter d are respectively provided with valves F1-e, F2-e, F1-f and F2-f.

[0009] As a further embodiment of this utility model: the air filter further includes a self-cleaning air port, and the self-cleaning air ports of air filter a, air filter c, air filter b and air filter d are interconnected through a self-cleaning air pipe, and valves F1-c, F1-d, F2-c and F2-d are respectively provided at the connection between the self-cleaning air port and the self-cleaning air pipe.

[0010] As a further embodiment of this utility model: valves F1-a and F1-b are installed on the high-pressure pipeline. The two ends of valve F1-a are connected to the high-pressure pipeline and the air inlet of air filter a, respectively. The two ends of valve F1-b are connected to the exhaust end of air filter b and the P1 port of differential pressure switch, respectively.

[0011] As a further embodiment of this utility model: valves F2-a and F2-b are installed on the low-pressure pipeline. The two ends of valve F2-a are connected to the low-pressure pipeline and the air inlet of air filter c, respectively. The two ends of valve F2-b are connected to the exhaust end of air filter d and the P2 port of differential pressure switch, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The new control system for adding and unloading air compressors utilizes the condition that the internal air pressure of high-pressure and low-pressure pipelines is higher than the external ambient air pressure. In conjunction with valve switching, the airflow is filtered and then convected to the other side, while the air filter on one side of the pipeline is backflushed and cleaned, thereby achieving the purpose of protecting the differential pressure switch and cleaning the air filter online. Attached Figure Description

[0014] Figure 1 A schematic diagram of a new control system for loading and unloading an air compressor;

[0015] Figure 2 This is a schematic diagram of the structure of an air filter in a new control system for adding and unloading an air compressor.

[0016] In the diagram: 1. Differential pressure switch; 2. High-pressure pipeline; 3. Low-pressure pipeline; 4. Air filter a; 5. Air filter b; 6. Air filter c; 7. Air filter d; 8. Self-cleaning air pipe; 9. Valve F1-c; 10. Valve F1-d; 11. Valve F2-c; 12. Valve F2-d; 13. Valve F1-a; 14. Valve F2-a; 15. Valve F1-e; 16. Valve F1-f; 17. Valve F1-b; 18. Valve F2-b; 19. Valve F2-f; 20. Valve F2-e; 101. Filter housing; 102. Inlet end; 103. Exhaust end; 104. Self-cleaning air port; 105. Filter component; 106. Impurity discharge port. Detailed Implementation

[0017] Please see Figure 1 and 2 In this embodiment of the invention, a new control system for loading and unloading an air compressor includes a differential pressure switch 1, a high-pressure pipeline 2, and a low-pressure pipeline 3. The P1 and P2 ports of the differential pressure switch 1 are connected to the high-pressure pipeline 2 and the low-pressure pipeline 3, respectively. Air filters a4 and b5 are installed on the high-pressure pipeline 2, and high-pressure gas sequentially enters the P1 port of the differential pressure switch 1 through air filters a4 and b5. Air filters c6 and d7 are installed on the low-pressure pipeline 3, and low-pressure gas sequentially enters the P2 port of the differential pressure switch 1 through air filters c6 and d7. By installing air filters a4, b5, c6, and d7 on the high-pressure and low-pressure pipelines 2 and 3, the air input to the differential pressure switch 1 is purified, preventing dust, particulate matter, fibers, oil, etc., from entering and affecting the detection accuracy.

[0018] In a preferred embodiment, air filter a4 and air filter c6 are primary filters, and air filter b5 and air filter d7 are secondary filters. Air filter a4, air filter c6, air filter b5 and air filter d7 are all air filters and have the same structure.

[0019] The air filter includes a filter housing 101, an inlet end 102, an exhaust end 103, a filter element 105, and a discharge port 106. The filter element 105 is fixed inside the filter housing 101. One side of the filter housing 101 is connected to the inlet end 102, and the filter element 105 is connected to the exhaust end 103. The bottom of the filter housing 101 is provided with a discharge port 106. The primary air filter uses a metal mesh filter as the filter element 105. The pores of the metal mesh mechanically intercept dust, particulate matter, fibers, etc. in the air, serving as the primary filter and protecting the subsequent secondary filter. The secondary air filter uses a HEPA filter as the filter element 105. The HEPA filter can remove particles with a diameter of less than 0.3 micrometers with an efficiency of over 99.97%, effectively removing dust, dirt, bacteria, and oil, and protecting the differential pressure switch 1.

[0020] In a preferred embodiment, the discharge ports 106 of air filters a4, c6, b5 and d7 are respectively provided with valves F1-e15, F2-e20, F1-f16 and F2-f19.

[0021] In a preferred embodiment, the air filter further includes a self-cleaning air port 104. The self-cleaning air ports 104 of air filter a4, air filter c6, air filter b5 and air filter d7 are interconnected through a self-cleaning air pipe 8. Valves F1-c9, F1-d10, F2-c11 and F2-d12 are respectively provided at the connection between the self-cleaning air port 104 and the self-cleaning air pipe 8.

[0022] In a preferred embodiment, valves F1-a13 and F1-b17 are installed on the high-pressure pipeline 2. The two ends of valve F1-a13 are connected to the high-pressure pipeline 2 and the air inlet 102 of air filter a4, respectively. The two ends of valve F1-b17 are connected to the exhaust end 103 of air filter b5 and the P1 port of differential pressure switch 1, respectively.

[0023] In a preferred embodiment, valves F2-a14 and F2-b18 are installed on the low-pressure pipeline 3. Both ends of valve F2-a14 are connected to the low-pressure pipeline 3 and the air inlet 102 of the air filter c6, respectively. Both ends of valve F2-b18 are connected to the exhaust end 103 of the air filter d7 and the P2 port of the differential pressure switch 1, respectively. The internal air pressure of the high-pressure pipeline 2 and the low-pressure pipeline 3 is higher than the external ambient air pressure. Therefore, this condition allows for automatic cleaning and removal of impurities intercepted by the filter component 105, achieving the cleaning purpose. During normal operation, all valves except F2-a14, F2-b18, F1-a13, and F1-b17 are in the closed state. When cleaning the air filter a4, except for valve F2-a14... 9. Except for valves F2-d12, F2-a14, and F1-e15, which are in the open state, all other valves are in the closed state. The airflow inside the low-pressure pipeline 3, after being filtered by air filters c6 and d7, enters through the self-cleaning port 104 of air filter a4, backflushing the filter element 105 of air filter a4. Impurities are blown out through valve F1-e15. Similarly, air filters b5, c6, and d7 are cleaned sequentially. The gas required for cleaning air filters c6 and d7 comes from high-pressure pipeline 2, and the gas from high-pressure pipeline 2 is output from valve F1-d10, thus achieving the purpose of automatic cleaning. The control of all valves can be controlled by PLC, enabling accurate and efficient switching of valve opening and closing modes.

[0024] It should be noted that all the above embodiments belong to the same utility model concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0025] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A new control system for air compressor loading and unloading, comprising a differential pressure switch (1), a high pressure pipeline (2) and a low pressure pipeline (3), the P1 port and the P2 port of the differential pressure switch (1) are connected to the high pressure pipeline (2) and the low pressure pipeline (3) respectively, characterized in that, The high-pressure pipeline (2) is equipped with air filter a (4) and air filter b (5). High-pressure gas enters the P1 port of the differential pressure switch (1) through air filter a (4) and air filter b (5) in sequence. The low-pressure pipeline (3) is equipped with air filter c (6) and air filter d (7). Low-pressure gas enters the P2 port of the differential pressure switch (1) through air filter c (6) and air filter d (7) in sequence.

2. A new control system for load-unloading of an air compressor according to claim 1, characterized in that, The air filter a (4) and air filter c (6) are primary filters, and the air filter b (5) and air filter d (7) are secondary filters. The air filters a (4), c (6), b (5) and d (7) are all air filters and have the same structure. The air filter includes a filter housing (101), an air inlet (102), an air outlet (103), a filter element (105), and a waste discharge port (106). The filter element (105) is fixed inside the filter housing (101). One side of the filter housing (101) is connected to the air inlet (102), and the filter element (105) is connected to the air outlet (103). A waste discharge port (106) is provided at the bottom of the filter housing (101).

3. A new control system for load adding and unloading of an air compressor as claimed in claim 2, wherein, The air filter a (4), air filter c (6), air filter b (5) and air filter d (7) are respectively equipped with valves F1-e (15), F2-e (20), F1-f (16) and F2-f (19) at their discharge ports (106).

4. A new control system for load adding and unloading of an air compressor as claimed in claim 3, wherein, The air filter also includes a self-cleaning air port (104). The self-cleaning air ports (104) of air filter a (4), air filter c (6), air filter b (5) and air filter d (7) are interconnected through a self-cleaning air pipe (8). Valves F1-c (9), F1-d (10), F2-c (11) and F2-d (12) are respectively provided at the connection between the self-cleaning air port (104) and the self-cleaning air pipe (8).

5. A new control system for load adding and unloading of an air compressor as claimed in claim 4, wherein, Valve F1-a (13) and valve F1-b (17) are installed on the high-pressure pipeline (2). The two ends of valve F1-a (13) are connected to the high-pressure pipeline (2) and the air inlet (102) of air filter a (4) respectively. The two ends of valve F1-b (17) are connected to the exhaust end (103) of air filter b (5) and the P1 port of differential pressure switch (1) respectively.

6. A new control system for loading and unloading an air compressor according to claim 4 or 5, characterized in that, The low-pressure pipeline (3) is equipped with valves F2-a (14) and F2-b (18). The two ends of valve F2-a (14) are connected to the low-pressure pipeline (3) and the air inlet (102) of air filter c (6), respectively. The two ends of valve F2-b (18) are connected to the exhaust end (103) of air filter d (7) and the P2 port of differential pressure switch (1), respectively.

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