Automatic cleaning device for measuring point of wind power wire feeding pressure balance system

Abstract

The utility model discloses an automatic cleaning device for a measuring point of a wind power wire feeding pressure balance system. The automatic cleaning device comprises a measuring gas circuit and a cleaning gas circuit which are respectively connected with a first pneumatic control valve and a second pneumatic control valve, the first pneumatic control valve is connected with a first measuring point, the second pneumatic control valve is connected with a second measuring point, and a pressure difference measuring unit is connected between the first pneumatic control valve and the second pneumatic control valve through an air pipe; the measuring gas path is also connected with a measuring gas source, and a measuring gas source electromagnetic valve for starting and stopping the measuring gas source is arranged on the measuring gas path; the cleaning gas circuit is further connected with a cleaning gas source, and a cleaning gas source electromagnetic valve for starting and stopping the cleaning gas source is arranged on the cleaning gas circuit. Pressure detection and positive-pressure blowing cleaning can be carried out on the wire supply channel by switching the measuring gas circuit and the cleaning gas circuit, so that the pressure detection is accurate, the pressure balance of a wind power wire feeding system is met, uniform wire feeding is realized, the wind speed is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette equipment cleaning, in particular to an automatic cleaning device for measuring points of a wind-powered wire feeding pressure balance system. Background Art

[0002] In the cigarette production process, tobacco conveying refers to the process of transporting tobacco from the tobacco storage cabinet to the cigarette making machine. Pneumatic tobacco conveying has become the preferred method for major cigarette factories due to its stability, efficiency, and ease of management and maintenance. However, the random nature of tobacco supply demand during cigarette making machines can lead to unstable wind speeds, which impacts product quality and increases energy consumption. Therefore, driven by the pursuit of high-quality development, the industry is placing higher demands on cigarette quality and energy consumption during production. Achieving uniform tobacco delivery and ensuring pressure balance within the existing pneumatic tobacco conveying pressure balance system are crucial.

[0003] In the original air-powered wire feeding pressure balance system gas circuit, refer to the attached Figure 1 The first measuring point and the second measuring point are directly connected to the pressure difference measuring unit, and the negative pressure at the measuring point is directly transmitted to the pressure difference measuring unit. Only the pressure difference can be measured, and the measuring point cannot be cleaned; and the measuring point of the wind wire feeding pressure balance system is prone to agglomeration due to the mixture of smoke foam and smoke oil, and the negative pressure suction of the original wind wire feeding pressure balance system is difficult to remove it; and the equipment space of the original wind wire feeding pressure balance system is narrow, and the larger cleaning device and the control device of the cleaning device are not convenient to install.

[0004] Therefore, the measuring points of the original wind-powered wire feeding pressure balancing system cannot be effectively cleaned, resulting in inaccurate pressure detection, and thus the pressure balance of the original wind-powered wire feeding pressure balancing system cannot be guaranteed. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic cleaning device for the measuring points of a wind-powered wire feeding pressure balance system, which is used to solve the technical problem in the prior art that the measuring points of the wind-powered wire feeding pressure balance system cannot be effectively cleaned, resulting in inaccurate pressure detection.

[0006] The utility model solves the above problems through the following technical solutions:

[0007] A device for automatically cleaning measuring points of a pneumatic wire feeding pressure balance system, comprising: a measuring air circuit and a cleaning air circuit respectively connected to a first air control valve and a second air control valve; the first air control valve is connected to a first measuring point, the second air control valve is connected to a second measuring point, and a pressure difference measuring unit is connected between the first air control valve and the second air control valve via an air pipe; the measuring air circuit is also connected to a measuring air source, and a measuring air source solenoid valve for starting and stopping the measuring air source is provided on the measuring air circuit; when tobacco is supplied normally, an air pipe separately connected to the measuring air circuit and the pressure difference measuring unit is used to detect the pressure of the wire feeding channel; the cleaning air circuit is also connected to a cleaning air source, and a cleaning air source solenoid valve for starting and stopping the cleaning air source is provided on the cleaning air circuit; when the wire feeding stops, the cleaning air circuit is separately connected to clean the first measuring point and the second measuring point.

[0008] As a further improvement, the automatic cleaning device is further provided with a relay to transmit the cigarette making machine's wire feed signal to the measuring air source solenoid valve and the cleaning air source solenoid valve via the relay.

[0009] As a further improvement, when the wire feeding stops, the air pipe connected to the pressure difference measuring unit is in communication with the normally open air paths of the first air-controlled valve and the second air-controlled valve.

[0010] As a further improvement, when the tobacco is supplied normally, the first measuring point and the second measuring point are connected to the normally closed air paths of the first air-controlled valve and the second air-controlled valve.

[0011] As a further improvement, the end of the trachea between the first air-controlled valve and the first measuring point, and the end of the trachea between the second air-controlled valve and the second measuring point are respectively provided with a cleaning detection interface, which is covered on the first measuring point and the second measuring point through the cleaning detection interface.

[0012] As a further improvement, the air outlet interface of the clean air source is arranged in the clean detection interface to perform positive pressure blowing on the first measuring point and the second measuring point.

[0013] As a further improvement, the gas outlet interface of the clean gas source is arranged in the clean detection interface.

[0014] As a further improvement, the air outlet interface of the clean air source is located on the first measuring point and the second measuring point close to the outlet of the wire feeding pipe to achieve positive pressure backblowing.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] The utility model discloses an automatic cleaning device for measuring points of a wind-driven wire feeding pressure balance system. By switching a measuring air path and a cleaning air path, the pressure of a wire feeding channel can be detected, and a first measuring point and a second measuring point opened on the wire feeding channel can be cleaned by blowing positive pressure air, so that the pressure detection is accurate, thereby meeting the pressure balance of the wind-driven wire feeding system, achieving uniform wire feeding, reducing wind speed, and lowering energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the gas path of a conventional pneumatic wire feeding pressure balance system;

[0018] Figure 2 This is a schematic diagram of an automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to the present invention;

[0019] Figure 3 This is a schematic diagram of the circuit connection of the automatic cleaning device when tobacco is supplied normally;

[0020] Figure 4 This is a schematic diagram of the circuit connections of the automatic cleaning device when tobacco supply stops in the present invention.

[0021] Figure markings: 1. First air-controlled valve; 2. Second air-controlled valve; 3. First measuring point; 4. Second measuring point; 5. Pressure difference measuring unit; 6. Wire feeding pipeline; 10. Measuring air path; 11. Measuring air source; 12. Measuring air source solenoid valve; 20. Cleaning air path; 21. Cleaning air source; 22. Cleaning air source solenoid valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example:

[0024] Combined with attachment Figure 2 As shown, an automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system includes: a measuring air path 10 and a cleaning air path 20 connected to a first air control valve 1 and a second air control valve 2, respectively;

[0025] The measuring gas circuit 10 is also connected to a measuring gas source 11, and a measuring gas source solenoid valve 12 for starting and stopping the measuring gas source is also provided on the measuring gas circuit;

[0026] The clean gas circuit 20 is also connected to a clean gas source 21, and a clean gas source solenoid valve 22 for starting and stopping the clean gas source is also provided on the clean gas circuit;

[0027] The first air-controlled valve 1 is connected to a first measuring point 3 , the second air-controlled valve 2 is connected to a second measuring point 4 , and a pressure difference measuring unit 5 is connected between the first air-controlled valve and the second air-controlled valve via an air pipe.

[0028] Preferably, the automatic cleaning device also includes a relay arranged on the cigarette making machine, and the measuring air source solenoid valve 12 and the cleaning air source solenoid valve 22 take the relay signal on the cigarette making machine, and judge whether the cigarette making machine is feeding wire by opening and closing the relay contacts (high and low levels), and use this signal to control the opening and closing of the air circuit of the measuring air source solenoid valve 12 and the cleaning air source solenoid valve 22, and the opening and closing of the air circuit of the measuring air source solenoid valve 12 and the cleaning air source solenoid valve 22 controls the opening and closing of the measuring air source solenoid valve 12 and the cleaning air source solenoid valve 22.

[0029] When tobacco is supplied normally, Figure 3 As shown, the cigarette making machine wire feeding signal is received from the relay, the measuring air source solenoid valve path of the measuring air path is controlled, and the cleaning air source solenoid valve of the cleaning air path is closed. At this time, the normally open air paths of the first air-controlled valve and the second air-controlled valve are connected to the air pipe connected to the pressure difference measuring unit, so as to detect the wire feeding channel pressure of the first measuring point and the second measuring point through the pressure difference measuring unit.

[0030] When the wire supply stops, Figure 4 As shown, upon receiving a signal from the relay that the cigarette maker is stopping feeding the cigarette thread, the measuring air source solenoid valve in the measuring air path is controlled to close, and the clean air source battery valve in the cleaning air path is controlled to close. At this time, the normally closed air paths of the first and second air-controlled valves are disconnected from the air pipe connected to the differential pressure measurement unit, allowing the clean air source to begin cleaning the first and second measuring points.

[0031] Optionally, the cleaning air source and the measuring air source can be connected to the first measuring point or the second measuring point respectively through two air pipes, and a cleaning detection interface is set at the end of the two air pipes. By covering the cleaning detection interface on the first measuring point and the second measuring point, and a pressure difference measuring unit 5 connected between the first air control valve and the second air control valve through the air pipe, the pressure difference measurement of the wire feeding pipe can be realized; and the cleaning air source is connected to the wire feeding pipe through the cleaning detection interface to clean the wire feeding pipe. During the wire feeding process, the wire feeding pipe uses negative pressure suction at the tail end of the wire feeding pipe to feed the tobacco wire. At this time, the air outlet interface of the cleaning air source is set in the cleaning detection interface. Cleaning is performed by positive pressure blowing through the cleaning detection interface at the first measuring point and the second measuring point on the wire feeding pipe. The air pressure is greater at the first measuring point and the second measuring point, so that the smoke foam can be effectively removed.

[0032] Preferably, considering that smoke foam and smoke oil mixtures easily clump and are difficult to remove with negative pressure suction, in this embodiment, the outlet port of the clean air source 21 is disposed within the cleaning detection port. Optionally, the outlet port of the clean air source 21 is located near the outlet of the wire feed pipe 6 at the first and second measuring points 3 and 4, so that the first and second measuring points can be cleaned using positive pressure backflushing.

[0033] The utility model discloses an automatic cleaning device for measuring points of a pressure balance system of a pneumatic wire feeding system, which can effectively remove lumps of smoke foam and smoke oil mixture by adopting a positive pressure backblowing method for cleaning; and by controlling the start and stop of the measuring air source solenoid valve and the cleaning air source solenoid valve through a relay, it can realize the conversion between cleaning and measurement and realize automation; in addition, the use of independent measuring air circuits and cleaning air circuit loops avoids the problem that positive pressure backblowing and detection performed simultaneously will affect the detection results and may damage the pressure difference measurement unit, thereby improving safety.

[0034] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. An automatic cleaning device for measuring points of a wind-powered wire feeding pressure balance system, characterized in that: include: a measuring gas circuit and a cleaning gas circuit respectively connected to the first gas control valve and the second gas control valve; The first air-controlled valve is connected to a first measuring point, the second air-controlled valve is connected to a second measuring point, and a pressure difference measuring unit is connected between the first air-controlled valve and the second air-controlled valve through an air pipe; the measuring air circuit is also connected to a measuring air source, and a measuring air source solenoid valve for starting and stopping the measuring air source is provided on the measuring air circuit; the clean air circuit is also connected to a clean air source, and a clean air source solenoid valve for starting and stopping the clean air source is provided on the clean air circuit.

2. The automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to claim 1, characterized in that: The automatic cleaning device is further provided with a relay to transmit the cigarette maker's cigarette supply signal to the measuring air source solenoid valve and the cleaning air source solenoid valve via the relay.

3. The automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to claim 1, characterized in that: When the wire feeding stops, the air pipe connected to the pressure difference measuring unit is in communication with the normally open air paths of the first air-controlled valve and the second air-controlled valve.

4. The automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to claim 1, characterized in that: When the tobacco is supplied normally, the first measuring point and the second measuring point are connected to the normally closed air paths of the first air-controlled valve and the second air-controlled valve.

5. The automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to claim 1, characterized in that: The end of the air pipe between the first air-controlled valve and the first measuring point, and the end of the air pipe between the second air-controlled valve and the second measuring point are respectively provided with a cleaning detection interface, which covers the first measuring point and the second measuring point through the cleaning detection interface.

6. The automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to claim 5, characterized in that: The air outlet interface of the clean air source is arranged in the clean detection interface to perform positive pressure blowing on the first measuring point and the second measuring point.

7. The automatic cleaning device for measuring points of a pneumatic wire feeding pressure balance system according to claim 6, characterized in that: The air outlet interface of the clean air source is located at the first measuring point and the second measuring point close to the outlet of the wire feeding pipeline to achieve positive pressure backblowing.

Images