Air compressor

Abstract

The utility model provides an air compressor which comprises an air compressor body, a drainage assembly is arranged at the lower end of the air compressor body, and when a programmable logic controller monitors that the water level in a heightening pipe rises to a preset maximum value through an upper water level sensor, a high-pressure electromagnetic valve is controlled to be opened through an intermediate relay; when the programmable logic controller monitors that no water flows through the drainage elbow through the water level sensor on the lower portion, the high-pressure electromagnetic valve is controlled to be closed through the intermediate relay, and therefore automatic drainage is conducted on the air compressor body; when the programmable logic controller monitors that the internal temperature of the drainage elbow pipe is lower than the lowest preset value through the water temperature sensor, the intelligent temperature controller controls the first electric heating piece, the second electric heating piece, the third electric heating piece and the fourth electric heating piece to conduct heating, and the situation that water in the falling guide elbow pipe, the connecting pipe, the heightening pipe and the drainage elbow pipe is frozen is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air compressor. Background Art

[0002] An air compressor is a device used to compress gas. During operation, the air compressor will produce a certain amount of condensed water and water vapor, which will then be deposited in the gas tank. The water in the gas tank must be discharged regularly, otherwise it will accumulate in the pipeline and affect the valve and the normal operation of the gas unit. Therefore, it is necessary to set a drainage device at the bottom of the air compressor gas tank to regularly discharge the accumulated water to the outside.

[0003] The publication number "CN218327508U" provides an air compressor air tank drainage device. When in use, the observation mechanism is set to observe the water level quickly and conveniently, so as to drain the water in time. The thawing mechanism is set to prevent the water from freezing and causing the water to be difficult to drain, which may affect the air pressure.

[0004] Normal use of the compressor.

[0005] However, the above technical solutions and the prior art have the following defects:

[0006] Although the air compressor air tank drainage device can conveniently and quickly observe the water accumulation height through the observation mechanism, so as to facilitate timely drainage of the accumulated water, in actual use, the staff is required to manually open the threaded cover 1 to drain all the accumulated water, and it does not have automatic drainage capability, thereby increasing the workload of the staff. In addition, since the heating pipe in the drainage device is not in direct contact with the water outlet pipe 1, the three-way pipe joint and the drainage pipe, the thawing efficiency is also low during actual use, and its practicality needs to be improved. Utility Model Content

[0007] The purpose of the utility model is to provide an air compressor to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An air compressor comprises an air compressor body, support legs and a water receiving box, wherein the support legs are symmetrically fixedly connected to the left and right sides of the bottom of the air compressor body, a drainage component is arranged at the lower end of the air compressor body, and the drainage component is used to automatically drain the water accumulated inside the air compressor body, a heating component is arranged on the outer surface of the drainage component, and the heating component is used to heat and de-ice the drainage component, and a water receiving box is placed on the right side of the air compressor body.

[0010] Preferably, the drainage assembly includes a guide bend, a pipe filter, a connecting pipe, a connecting tee, a drainage bend, a heightened pipe, a protective box and a sealing cover; the lower end of the air compressor body is fixedly connected to the guide bend, the lower end of the guide bend is connected to the pipe filter, the right end of the pipe filter is connected to the connecting pipe, the right end of the connecting pipe is fixedly connected to the connecting tee, the right end of the connecting tee is fixedly connected to the drainage bend, the upper end of the connecting tee is fixedly connected to the heightened pipe, the upper end of the heightened pipe is installed with a sealing cover, and the upper side of the right end surface of the air compressor body is fixedly connected to a protective box.

[0011] Preferably, a programmable logic controller is installed in the middle position inside the protection box, an intermediate relay is installed on the lower side inside the protection box, an upper water level sensor is installed on the lower end surface of the blocking cover, a lower water level sensor is installed on the lower side inside the drainage bend, and a high-pressure solenoid valve is installed at the lower end of the drainage bend.

[0012] Preferably, the heating component includes a first electric heater, a second electric heater, a water temperature sensor and an intelligent thermostat. The annular side surface of the drop bend is wrapped with the first electric heater, the annular side surface of the connecting pipe is wrapped with the second electric heater, an intelligent thermostat is installed on the upper side of the protection box, and a water temperature sensor is installed on the right side of the drainage bend.

[0013] Preferably, the annular side surface of the drainage elbow is wrapped with a third electric heating plate, and the annular side surface of the expansion pipe is wrapped with a fourth electric heating plate.

[0014] Preferably, a sealing ring is provided between the blocking cover and the expansion pipe, the blocking cover is a detachable structure, and the drop guide elbow is connected to the air compressor body.

[0015] Preferably, a pressure relief valve is provided on the right side of the upper end surface of the air compressor body, and four groups of support legs are fixedly connected, and the four groups of support legs have the same specifications.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In the working process of the air compressor body, when the programmable logic controller detects through the upper water level sensor that the water level in the heating pipe rises to the preset maximum value, it will control the high-pressure solenoid valve to open through the intermediate relay. At this time, the water inside the air compressor body will be discharged downward to the water receiving tank through the guide elbow, pipeline filter, connecting pipe, connecting tee and drainage elbow in sequence. When the programmable logic controller detects through the lower water level sensor that there is no water flowing through the drainage elbow, it indicates that all the accumulated water in the air compressor body has been discharged. At this time, the programmable logic controller will control the high-pressure solenoid valve to close through the intermediate relay, so as to automatically drain the air compressor body, without the need for manual operation by the staff, thereby reducing the workload of the staff;

[0018] 2. In the working process of the air compressor body, when the programmable logic controller detects through the water temperature sensor that the internal temperature of the drainage elbow is lower than the minimum preset value, the first electric heater, the second electric heater, the third electric heater and the fourth electric heater will be controlled by the intelligent thermostat to work according to the preset temperature value, so as to heat the guide elbow, the connecting pipe, the increased tube and the drainage elbow respectively, so as to avoid the freezing of water inside the guide elbow, the connecting pipe, the increased tube and the drainage elbow. Moreover, since the first electric heater, the second electric heater, the third electric heater and the fourth electric heater are respectively fixed on the annular side of the guide elbow, the connecting pipe, the increased tube and the drainage elbow by wrapping, the heating efficiency is faster and the practicality is good during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a structural diagram of the heating component and the drainage component in the utility model;

[0021] Figure 3 It is a front cross-sectional view of the heating component and the drainage component in the utility model;

[0022] Figure 4 for Figure 3 A magnified view of middle;

[0023] Figure 5 This is a circuit diagram of the heating component and the drainage component in the utility model.

[0024] In the figure: 1. air compressor body; 11. pressure relief valve; 2. support leg; 3. heating component; 31. first electric heater; 32. second electric heater; 33. third electric heater; 34. fourth electric heater; 35. water temperature sensor; 36. intelligent thermostat; 4. water connection box; 5. drainage component; 51. guide elbow; 52. pipe filter; 53. connecting pipe; 54. connecting tee; 55. high-pressure solenoid valve; 56. drainage elbow; 57. increase pipe; 58. lower water level sensor; 59. intermediate relay; 511. programmable logic controller; 512. protection box; 513. upper water level sensor; 514. blocking cover; 5141. sealing ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 , the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] An air compressor comprises an air compressor body 1, support legs 2 and a water receiving tank 4. The support legs 2 are symmetrically fixedly connected to the left and right sides of the bottom of the air compressor body 1. Four groups of support legs 2 are fixedly connected, and the four groups of support legs 2 have the same specifications. The four groups of support legs 2 can stably support the air compressor body 1. A pressure relief valve 11 is arranged on the right side of the upper end surface of the air compressor body 1. The pressure relief valve 11 automatically opens to relieve pressure when the internal pressure of the air compressor body 1 exceeds the set pressure of the pressure relief valve 11 to prevent accidents.

[0029] A drainage component 5 is provided at the lower end of the air compressor body 1, and the drainage component 5 is used to automatically drain the accumulated water inside the air compressor body 1. A heating component 3 is provided on the outer surface of the drainage component 5, and the heating component 3 is used to heat and de-ice the drainage component 5. A water receiving box 4 is placed on the right side of the air compressor body 1. The water receiving box 4 will temporarily store the water discharged from the drainage component 5 to prevent the discharged water from spilling all over the ground.

[0030] The drainage assembly 5 includes a guide bend 51, a pipe filter 52, a connecting pipe 53, a connecting tee 54, a drainage bend 56, a pipe expansion tube 57, a protection box 512 and a blocking cover 514. The lower end of the air compressor body 1 is fixedly connected with the guide bend 51, and the guide bend 51 is connected to the air compressor body 1. The guide bend 51 and the air compressor body 1 are connected by welding. The guide bend 51 will guide the water inside the air compressor body 1 to the pipe filter 52. The lower end of the guide bend 51 is connected with the pipe filter 52. The pipe filter 52 can filter impurities in the water flowing through to prevent impurities from clogging the high-pressure solenoid valve 55. Since the internal detailed structure and working principle of the pipe filter 52 are relatively mature technologies in the prior art, they will not be described in detail here.

[0031] The right end of the pipe filter 52 is connected to a connecting pipe 53, which is connected to a connecting tee 54 by welding. The connecting pipe 53 will divert the water filtered by the pipe filter 52 to the connecting tee 54. The right end of the connecting pipe 53 is fixedly connected to a connecting tee 54, which is connected to a high-pressure pipe 57 and a drain elbow 56 by welding. The connecting tee 54 will divert water to the high-pressure pipe 57 and the drain elbow 56. The right end of the connecting tee 54 is fixedly connected to a drain elbow 56, which will divert water downward to the high-pressure solenoid valve 55. The upper end of the connecting tee 54 is fixedly connected to Add pipe 57, which will increase the height and support of the blocking cover 514. The blocking cover 514 is installed on the upper end of the added pipe 57. The blocking cover 514 will not only block the upper end of the added pipe 57, but also support the upper water level sensor 513. The blocking cover 514 is a detachable structure. The detachable blocking cover 514 is convenient for the later staff to repair and replace the upper water level sensor 513. A protection box 512 is fixedly connected to the upper side of the right end surface of the air compressor body 1, and the protection box 512 will support and protect the intermediate relay 59, the programmable logic controller 511 and the intelligent thermostat 36.

[0032] A sealing ring 5141 is provided between the blocking cover 514 and the increased pipe 57. The sealing ring 5141 makes the sealing between the blocking cover 514 and the increased pipe 57 better. A programmable logic controller 511 is installed in the middle position inside the protection box 512. The programmable logic controller 511 is connected to the water temperature sensor 35, the upper water level sensor 513, the lower water level sensor 58, the intermediate relay 59 and the intelligent temperature controller 36 through wires. The programmable logic controller 511 can execute instructions for operations such as logical operations, sequential control, timing, counting and arithmetic operations. Since the internal detailed structure and working principle of the programmable logic controller 511 are relatively mature technologies in the prior art, they will not be elaborated on here.

[0033] An intermediate relay 59 is installed at the lower side of the protection box 512, and the intermediate relay 59 facilitates the programmable logic controller 511 to control the switch of the high-pressure electromagnetic valve 55. An upper water level sensor 513 is installed at the lower end surface of the blocking cover 514, and the upper water level sensor 513 facilitates the programmable logic controller 511 to monitor the water level in the pipe 57 in real time. A first sealing strip is arranged between the upper water level sensor 513 and the blocking cover 514, and the first sealing strip makes the sealing between the upper water level sensor 513 and the blocking cover 514 more tight. Well, a lower water level sensor 58 is installed on the lower side of the drain bend 56. The lower water level sensor 58 facilitates the programmable logic controller 511 to monitor the water level in the drain bend 56 in real time. A second sealing strip is arranged between the lower water level sensor 58 and the drain bend 56. The second sealing strip makes the sealing between the lower water level sensor 58 and the drain bend 56 better. A high-pressure solenoid valve 55 is installed at the lower end of the drain bend 56. The high-pressure solenoid valve 55 can not only open and close the lower end of the drain bend 56, but also has good pressure resistance.

[0034] Embodiment 2:

[0035] On the basis of Example 1, in this embodiment, when the programmable logic controller 511 monitors through the water temperature sensor 35 that the internal temperature of the drainage bend 56 is lower than the minimum preset value, the first electric heater 31, the second electric heater 32, the third electric heater 33 and the fourth electric heater 34 will be controlled by the intelligent thermostat 36 to operate according to the preset temperature value, so as to heat the guide bend 51, the connecting pipe 53, the increased tube 57 and the drainage bend 56 respectively, so as to prevent the water inside the guide bend 51, the connecting pipe 53, the increased tube 57 and the drainage bend 56 from freezing.

[0036] The heating component 3 includes a first electric heater 31, a second electric heater 32, a water temperature sensor 35 and an intelligent thermostat 36. The annular side surface of the guide bend 51 is wrapped with the first electric heater 31. The first electric heater 31 is made of a silicone rubber electric heater. The first electric heater 31 made of a silicone rubber electric heater can heat the guide bend 51 during operation to prevent water in the guide bend 51 from easily freezing. The first electric heater 31 is soft and bendable so that it can be wrapped around the annular side surface of the guide bend 51 for use. The annular side surface of the connecting pipe 53 is wrapped with the second electric heater 32. The second electric heater 32 is made of a silicone rubber electric heater. The second electric heater 32 made of a silicone rubber electric heater can heat the connecting pipe 53 during operation to prevent water in the connecting pipe 53 from easily freezing. The second electric heater 32 is soft and bendable so that it can be wrapped around the annular side surface of the connecting pipe 53 for use.

[0037] An intelligent thermostat 36 is installed on the upper side of the protection box 512. The intelligent thermostat 36 is connected to the first electric heater 31, the second electric heater 32, the third electric heater 33 and the fourth electric heater 34 through wires. The intelligent thermostat 36 can control the first electric heater 31, the second electric heater 32, the third electric heater 33 and the fourth electric heater 34 to work according to preset temperature values. Since the internal detailed structure and working principle of the intelligent thermostat 36 are relatively mature technologies in the prior art, they will not be described in detail here. A water temperature sensor 35 is installed on the right side of the drainage elbow 56. The water temperature sensor 35 can sense the water temperature inside the drainage elbow 56 in real time when working. A third sealing strip is arranged between the water temperature sensor 35 and the drainage elbow 56. The third sealing strip makes the sealing between the water temperature sensor 35 and the drainage elbow 56 better.

[0038] The annular side surface of the drainage elbow 56 is wrapped with a third heating plate 33, and the third heating plate 33 is made of a silicone rubber heating plate. The third heating plate 33 made of a silicone rubber heating plate can heat the drainage elbow 56 during operation to prevent water in the drainage elbow 56 from easily freezing, and is soft and bendable so that it can be wrapped around the annular side surface of the drainage elbow 56 for use. The annular side surface of the expansion pipe 57 is wrapped with a fourth heating plate 34, and the fourth heating plate 34 is made of a silicone rubber heating plate. The fourth heating plate 34 made of a silicone rubber heating plate can heat the expansion pipe 57 during operation to prevent water in the expansion pipe 57 from easily freezing, and is soft and bendable so that it can be wrapped around the annular side surface of the expansion pipe 57 for use.

[0039] Working principle: During the operation of the air compressor body 1, water will continuously be deposited inside the air storage tank, and the deposited water will flow into the pipe filter 52 through the guide bend 51. At this time, the pipe filter 52 will filter the impurities in the passing water to prevent the impurities from clogging the high-pressure solenoid valve 55. The water filtered by the pipe filter 52 will flow into the connecting tee 54 through the connecting pipe 53. At this time, the connecting tee 54 will guide the water to the drainage bend 56, and the normally closed high-pressure solenoid valve 55 will block the water in the drainage bend 56. After the water in the connecting tee 54 is deposited for a period of time, a part of the water will enter the increasing tube 57. When the water in the increasing tube 57 rises to contact with the upper water level sensor 513, the upper water The level sensor 513 will transmit a signal to the programmable logic controller 511, so that the programmable logic controller 511 controls the high-pressure solenoid valve 55 to open through the intermediate relay 59. At this time, the water inside the air compressor body 1 will pass through the guide elbow 51, the pipe filter 52, the connecting pipe 53, the connecting tee 54 and the drainage elbow 56 in sequence and discharge downward to the water receiving tank 4. When the programmable logic controller 511 detects that there is no water flowing through the drainage elbow 56 through the lower water level sensor 58, it indicates that all the accumulated water in the air compressor body 1 has been discharged. At this time, the programmable logic controller 511 will control the high-pressure solenoid valve 55 to close through the intermediate relay 59, so as to automatically drain the air compressor body 1. When the body 1 starts working, since there is no water accumulation inside the drainage bend 56, the staff needs to input the corresponding program into the programmable logic controller 511 in advance to prevent the programmable logic controller 511 from opening the high-pressure solenoid valve 55 when it detects that there is no water flowing through the drainage bend 56 through the lower water level sensor 58; at the same time, when the programmable logic controller 511 detects that the internal temperature of the drainage bend 56 is lower than the minimum preset value through the water temperature sensor 35, the programmable logic controller 511 will control the first electric heater 31, the second electric heater 32, the third electric heater 33 and the fourth electric heater 34 to work according to the preset temperature value through the intelligent thermostat 36, so as to respectively control the guide bend 51, the connecting pipe 53 and the heating pipe 54. 57 and the drainage bend pipe 56 are heated (in this process, the heat generated will be transferred through the water, so that the ice inside the pipe filter 52 and the connecting tee 54 can also be released), so as to prevent the water inside the guide bend pipe 51, the connecting pipe 53, the increased tube 57 and the drainage bend pipe 56 from freezing. In this process, when the programmable logic controller 511 detects through the water temperature sensor 35 that the internal temperature of the drainage bend pipe 56 is higher than the maximum preset value, the programmable logic controller 511 will control the first heating plate 31, the second heating plate 32, the third heating plate 33 and the fourth heating plate 34 to stop working through the intelligent thermostat 36, so as to automatically heat the guide bend pipe 51, the connecting pipe 53, the increased tube 57 and the drainage bend pipe 56.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air compressor, comprising an air compressor body (1), a support leg (2) and a water receiving tank (4), characterized in that: Support legs (2) are symmetrically fixedly connected to the left and right sides of the bottom of the air compressor body (1); a drainage assembly (5) is provided at the lower end of the air compressor body (1), and the drainage assembly (5) is used to automatically drain the water accumulated inside the air compressor body (1); a heating assembly (3) is provided on the outer surface of the drainage assembly (5), and the heating assembly (3) is used to heat and de-ice the drainage assembly (5); and a water receiving box (4) is placed on the right side of the air compressor body (1); The drainage assembly (5) comprises a guide bend (51), a pipe filter (52), a connecting pipe (53), a connecting tee (54), a drainage bend (56), a pipe expansion tube (57), a protection box (512) and a plugging cover (514); the lower end of the air compressor body (1) is fixedly connected with the guide bend (51); the lower end of the guide bend (51) is connected with the pipe filter (52); the right end of the pipe filter (52) is connected with the connecting pipe (53); the right end of the connecting pipe (53) is fixedly connected with the connecting tee (54); the right end of the connecting tee (54) is fixedly connected with the drainage bend (56); the upper end of the connecting tee (54) is fixedly connected with the pipe expansion tube (57); the upper end of the pipe expansion tube (57) is equipped with a plugging cover (514); the upper side of the right end surface of the air compressor body (1) is fixedly connected with the protection box (512); A programmable logic controller (511) is installed at a middle position inside the protection box (512), an intermediate relay (59) is installed at the lower side inside the protection box (512), an upper water level sensor (513) is installed at the lower end surface of the blocking cover (514), a lower water level sensor (58) is installed at the lower side inside the drainage elbow (56), and a high-pressure solenoid valve (55) is installed at the lower end of the drainage elbow (56).

2. An air compressor according to claim 1, characterized in that: The heating component (3) comprises a first electric heating plate (31), a second electric heating plate (32), a water temperature sensor (35) and an intelligent temperature controller (36); the annular side surface of the drainage bend (51) is wrapped with the first electric heating plate (31); the annular side surface of the connecting pipe (53) is wrapped with the second electric heating plate (32); the intelligent temperature controller (36) is installed on the upper side of the protection box (512); and the water temperature sensor (35) is installed on the right side of the drainage bend (56).

3. An air compressor according to claim 1, characterized in that: The annular side surface of the drainage elbow (56) is wrapped with a third electric heating plate (33), and the annular side surface of the expansion pipe (57) is wrapped with a fourth electric heating plate (34).

4. An air compressor according to claim 1, characterized in that: A sealing ring (5141) is provided between the blocking cover (514) and the expansion pipe (57); the blocking cover (514) is a detachable structure; and the drop guide elbow (51) is in communication with the air compressor body (1).

5. An air compressor according to claim 1, characterized in that: A pressure relief valve (11) is provided on the right side of the upper end surface of the air compressor body (1), and four groups of support legs (2) are fixedly connected, and the four groups of support legs (2) have the same specifications.

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