Energy-saving control method for pneumatic-electric interlocking of air cylinder

Abstract

The invention relates to the technical field of air cylinder control, and discloses an air cylinder pneumoelectric interlocking energy-saving control method which comprises the following steps: S1, an electric control valve and an air path are additionally arranged outside an air cylinder for auxiliary control; s2, an original one-way valve of the air cylinder is utilized, and the one-way valve is controlled to work And S3, during crust breaking, when the electric control valve receives a crust breaking command sent by the control system, the electric control valve is opened at the moment, and an air path through which the compressed air enters the one-way valve is closed. An original air control system of the air cylinder is utilized, an electric control system and a new air path are installed outside the air cylinder, the new air path is communicated with the one-way valve, the electric control system controls the one-way valve to work by controlling the change of the flow direction of an air pipe, pressure borne by a sealing ring at the front end of the crust breaking air cylinder is reduced, and the service life of sealing materials is prolonged; the problems of sealing material damage caused by pressing of the front end of the crust breaking air cylinder and air leakage caused by damage of the sealing material of the air cylinder are solved, and the function of avoiding waste of compressed air through pneumatic-electric interlocking is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinder control, and in particular to an energy-saving control method for gas-electric interlocking of a cylinder. Background Art

[0002] In the electrolytic production process of aluminum smelters, the shell-breaking cylinder is a key piece of equipment, primarily used to break down the alumina crust on the surface of the electrolytic cell to facilitate the replenishment of raw materials and the exhaust of gases. Its operating principle is based on pneumatic transmission technology, using compressed air to drive the reciprocating motion of the piston, completing the mechanical impact action.

[0003] Air cylinders are susceptible to air leakage due to wear of their dynamic seals due to the operating environment and temperature. Currently, most companies employ a shutoff valve at the front of the main air duct to prevent long-term air leakage by preventing air from being supplied to the cylinder when it is not being fired. However, this approach has significant drawbacks. After the shutoff valve shuts off the air supply to the pipeline, firing the cylinder again requires refilling the pipeline. This can lead to ineffective firing and wasted compressed air when the cylinder fires before reaching high pressure. Therefore, an energy-saving control method for cylinders with pneumatic and electrical interlocking is proposed. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides an energy-saving control method for gas-electric interlocking of a cylinder. Utilizing the cylinder's original gas control system, an electric control system and a new air circuit are installed on the outside of the cylinder. The new air circuit is connected to a one-way valve. By controlling the change in the flow direction of the air duct, the electric control system controls the operation of the one-way valve. When the cylinder is working normally during shelling, the electric control system sends an electrical signal to close the one-way valve control, the new air circuit stops supplying air, the air-controlled one-way valve does not work, and the cylinder operates normally. When the cylinder is not performing shelling operations, the electric control system stops sending the electrical signal, the new air circuit activates the one-way valve, and locks the passage to the air duct at the front end of the cylinder to reduce compressed air waste.

[0006] (2) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An energy-saving control method for gas-electric interlocking of a cylinder comprises the following steps:

[0009] S1: Add an electric control valve and a new air path outside the cylinder for auxiliary control;

[0010] S2: Use the original one-way valve of the cylinder to control the operation of the one-way valve through pressure difference;

[0011] S3: When the electric control valve receives the command of the control system, the electric control valve opens, the compressed air into the one-way valve is closed, the one-way valve is allowed to exhaust the gas in the front end of the cylinder due to the change of pressure difference, and the compressed air in the main pipe enters the rear end of the cylinder to realize the shell breaking action;

[0012] S4: When the electric control valve receives the command of the control system, the electric control valve receives the command of the control system, the cylinder returns to the position, the original air control system locks the nozzle, the electric control system sends a signal to release the compressed air of the electric control valve to activate the one-way valve again, the one-way valve is closed due to the pressure difference, and the compressed air in the front end of the cylinder is no longer obtained.

[0013] As a further scheme of the present application, the compressed air in the main air inlet pipe is closed into the one-way valve during the shell breaking in S3.

[0014] Further, the compressed air in the new air path is closed into the one-way valve during the shell breaking in S3.

[0015] On the basis of the foregoing scheme, the compressed air in the main air inlet pipe and the new air path is closed into the one-way valve during the shell breaking in S3.

[0016] Further, the electric control system sends a signal to the electric control valve to release the compressed air of the new air path to activate the one-way valve again in S4.

[0017] As a further scheme of the present application, the electric control system sends a signal to the electric control valve to release the compressed air of the main air inlet pipe to activate the one-way valve again in S4.

[0018] On the basis of the foregoing scheme, the electric control system sends a signal to the electric control valve to release the compressed air of the new air path and the main air inlet pipe to activate the one-way valve again in S4.

[0019] (Three) beneficial effects

[0020] Compared with the prior art, the present application provides an energy-saving control method for cylinder gas-electric interlocking, which has the following beneficial effects:

[0021] 1. In the present application, an electric control system and a new air path are installed outside the cylinder by using the original air control system of the cylinder, the new air path is connected with the one-way valve, the flow direction of the air pipe is controlled by changing the flow direction, the electric control system controls the working of the one-way valve, and the pressure borne by the sealing ring in the front end of the cylinder during shell breaking is reduced to prolong the service life of the sealing material.

[0022] 2. In the present application, when the cylinder normally breaks the shell, the electric control system sends an electric signal to close the one-way valve control, the new air path stops supplying air, the air control one-way valve does not work, and the cylinder normally operates. When the cylinder does not perform the shell breaking operation, the electric control system stops the electric signal, the new air path activates the one-way valve, locks the channel to the front end of the cylinder, and reduces the waste of compressed air.

[0023] 3. The present invention can reduce the problem of damage to the sealing material caused by the pressure on the front end of the shell-breaking cylinder and the air leakage caused by the damage to the cylinder sealing material, and realize the function of gas-electric interlocking to eliminate the waste of compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the normal shelling process of the energy-saving control method of the cylinder gas-electric interlock proposed by the present invention.

[0025] Figure 2 This is a schematic diagram of the non-shelling process of the energy-saving control method of the gas-electric interlock of the cylinder proposed by the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0027] Example 1

[0028] Reference Figure 1-2 , an energy-saving control method for gas-electric interlocking of a cylinder, comprising the following steps:

[0029] S1: Add an electric control valve and a new air path outside the cylinder for auxiliary control;

[0030] S2: Use the original one-way valve of the cylinder to control the operation of the one-way valve through pressure difference;

[0031] S3: When the shell is being broken, when the electronically controlled valve receives the shell breaking command from the control system, it will open and close the air path for the compressed air to enter the one-way valve. The one-way valve will allow the gas at the front end of the cylinder to be discharged due to the change in pressure difference, and the main compressed gas will enter the rear end of the cylinder to achieve the shell breaking action. When breaking the shell in S3, the compressed air in the main air intake pipe entering the air path of the one-way valve is closed;

[0032] S4: When not shelling, when the electronic control valve receives the command to stop shelling from the control system, the cylinder returns to its position, the original air control system locks the bell head, and the electronic control system sends a signal to the electronic control valve to release compressed air to reactivate the one-way valve. The one-way valve is closed due to the pressure difference, and the front end of the cylinder no longer receives compressed air. In S4, the electronic control system sends a signal to the electronic control valve to release the compressed air in the newly added air path to reactivate the one-way valve.

[0033] Example 2

[0034] Reference Figure 1-2, an energy-saving control method for gas-electric interlocking of a cylinder, comprising the following steps:

[0035] S1: Add an electric control valve and a new air path outside the cylinder for auxiliary control;

[0036] S2: Use the original one-way valve of the cylinder to control the operation of the one-way valve through pressure difference;

[0037] S3: When the shell is being broken, when the electric control valve receives the shell breaking command from the control system, it will open and close the air path for compressed air to enter the one-way valve. The one-way valve will allow the gas at the front end of the cylinder to be discharged due to the change in pressure difference, and the main compressed gas will enter the rear end of the cylinder to achieve the shell breaking action. When breaking the shell in S3, the compressed air in the newly added air path that enters the air path of the one-way valve is closed;

[0038] S4: When not shelling, when the electronic control valve receives the command to stop shelling from the control system, the cylinder returns to its original position, the original air control system locks the bell head, and the electronic control system sends a signal to the electronic control valve to release compressed air to reactivate the one-way valve. The one-way valve is closed due to the pressure difference, and the front end of the cylinder no longer receives compressed air. In S4, the electronic control system sends a signal to the electronic control valve to release compressed air from the main intake pipe to reactivate the one-way valve;

[0039] The one-way valve, electronic control system, newly added air path and air intake pipe are designed in the overall valve body of the cylinder and are directly installed on the cylinder or designed into multiple independent and mixed individuals.

[0040] Example 3

[0041] Reference Figure 1-2 , an energy-saving control method for gas-electric interlocking of a cylinder, comprising the following steps:

[0042] S1: Add an electric control valve and a new air path outside the cylinder for auxiliary control;

[0043] S2: Use the original one-way valve of the cylinder to control the operation of the one-way valve through pressure difference;

[0044] S3: When the shell is being broken, when the electronically controlled valve receives the shell breaking command from the control system, it will open and close the air path for compressed air to enter the one-way valve. The one-way valve will allow the gas at the front end of the cylinder to be discharged due to the change in pressure difference, and the main compressed air will enter the rear end of the cylinder to achieve the shell breaking action. When breaking the shell in S3, the compressed air in the main air intake pipe and the newly added air path entering the air path of the one-way valve are closed;

[0045] S4: When not shelling, when the electronic control valve receives the command to stop shelling from the control system, the cylinder returns to its original position, the original air control system locks the bell head, and the electronic control system sends a signal to the electronic control valve to release compressed air to reactivate the one-way valve. The one-way valve closes due to the pressure difference, and the front end of the cylinder no longer receives compressed air. In S4, the electronic control system sends a signal to the electronic control valve to release compressed air from the newly added air path and the main intake pipe to reactivate the one-way valve;

[0046] The one-way valve, electronic control system, newly added air path and air intake pipe are designed in the overall valve body of the cylinder and are directly installed on the cylinder or designed into multiple independent and mixed individuals.

[0047] In the description herein, it should be noted that relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "include," "comprise," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving control method for gas-electric interlocking of a cylinder, characterized in that: The following steps are involved: S1: Add an electric control valve and a new air path outside the cylinder for auxiliary control; S2: Use the original one-way valve of the cylinder to control the operation of the one-way valve through pressure difference; S3: When the electronic control valve receives the shell-breaking command from the control system, it will open and close the air path for compressed air to enter the one-way valve. The one-way valve will allow the gas at the front end of the cylinder to be discharged due to the change in pressure difference, and the main compressed air will enter the rear end of the cylinder to achieve the shell-breaking action; S4: When the shell is not being hammered, when the electronic control valve receives the command to stop hammering from the control system, the cylinder returns to its original position, the original air control system locks the bell head, and the electronic control system sends a signal to the electronic control valve to release the compressed air to reactivate the one-way valve. The one-way valve is closed due to the pressure difference, and the front end of the cylinder no longer receives compressed air.

2. The energy-saving control method of cylinder gas-electric interlocking according to claim 1 is characterized in that: When the shell is broken in S3, the compressed air in the main air inlet pipe is closed to enter the air path of the one-way valve.

3. The energy-saving control method of cylinder gas-electric interlock according to claim 1 is characterized in that: When the shell is broken in S3, the compressed air in the newly added air path is closed to enter the air path of the one-way valve.

4. The energy-saving control method of cylinder gas-electric interlock according to claim 1 is characterized in that: When the shell is broken in S3, the compressed air in the main air inlet pipe and the newly added air path is closed to enter the air path of the one-way valve.

5. The energy-saving control method for cylinder gas-electric interlocking according to claim 1 is characterized in that: In S4, the electronic control system sends a signal to the electronic control valve to release the compressed air in the newly added air path to reactivate the one-way valve.

6. The energy-saving control method of cylinder gas-electric interlocking according to claim 1 is characterized in that: In the S4, the electronic control system sends a signal to the electronic control valve to release the compressed air in the main intake pipe to reactivate the one-way valve.

7. The energy-saving control method for cylinder gas-electric interlocking according to claim 1 is characterized in that: The electronic control system in S4 sends a signal to the electronic control valve to release the compressed air from the newly added air path and the main intake pipe to reactivate the one-way valve.

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