Charging bucket heating structure with heating steam pipe safety valve control

Abstract

The utility model provides a charging bucket heating structure with heating steam pipe safety valve control, and belongs to the technical field of heating control. The heating steam conveying main pipeline is connected with the heating material tank I and the heating material tank II through a heating steam conveying branch pipeline I and a heating steam conveying branch pipeline II respectively, a pressure reducing valve is arranged on the heating steam conveying main pipeline, a pneumatic angle valve I is arranged on the heating steam conveying branch pipeline I, and a pneumatic angle valve II is arranged on the heating steam conveying branch pipeline II. A safety valve is arranged behind the pressure reducing valve on the heating steam conveying main pipeline; the reversing valve is connected with the pneumatic angle valve I and the pneumatic angle valve II through two control air pipes respectively, the pneumatic angle valve III is arranged on the heating steam conveying main pipeline and arranged between the pressure reducing valve and the safety valve, and the pneumatic shuttle valve is connected between the two control air pipes and connected with the pneumatic angle valve III. According to the utility model, frequent take-off of the safety valve is eliminated, waste of steam energy is avoided, and damage to sealing of the safety valve is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating control, and in particular relates to a material tank heating structure with a heating steam pipe safety valve control. Background Art

[0002] The heating control pipeline structure of the two heating material tanks used for tobacco feeding is as follows: the heating steam delivery main pipeline is connected to the two heating material tanks through two heating steam delivery branch pipelines to deliver heating steam to them, a pressure reducing valve is connected to the heating steam delivery main pipeline, and pneumatic angle valves are provided on the two heating steam delivery branch pipelines. To ensure safety, a safety valve is also provided at the rear of the pressure reducing valve on the heating steam delivery main pipeline; the reversing valve is connected to the two pneumatic angle valves through two control air pipes to control its switch.

[0003] Since the heating layer of the heating tank has a pressure resistance of only 0.1MPa, the set pressure of the heating steam pipeline pressure reducing valve is 0.08MPa, and the safety valve trip pressure is set at 0.09MPa after the pressure reducing valve. When the heating pneumatic valve of the heating tank is closed, the safety valve between the pressure reducing valve and the pneumatic valve causes the pipeline pressure to rise due to the internal leakage of the pressure reducing valve, and reaches the safety valve trip pressure, and continues to discharge to maintain pressure balance. With the wear of the seal inside the pressure reducing valve, the leakage will gradually increase, causing greater waste of steam energy, affecting the on-site environment, and destroying the seal of the safety valve over time. Although closing the steam inlet stop valve can solve this problem, it increases the difficulty of operation, cannot achieve automatic control of the liquid temperature, and affects the use of steam in other parts. Therefore, it is necessary to propose improvements. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a material tank heating structure with a heating steam pipe safety valve control. The utility model aims to eliminate the frequent tripping of the safety valve, avoid the waste of steam energy, and reduce the damage to the safety valve seal.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A material tank heating structure controlled by a heating steam pipe safety valve includes a heating material tank I, a heating material tank II, a pressure reducing valve, a reversing valve, and a safety valve;

[0007] The heating steam delivery main pipeline is connected to the heating material tank I and the heating material tank II through the heating steam delivery branch pipeline I and the heating steam delivery branch pipeline II to deliver heating steam thereto, a pressure reducing valve is provided on the heating steam delivery main pipeline, a pneumatic angle valve I is provided on the heating steam delivery branch pipeline I, a pneumatic angle valve II is provided on the heating steam delivery branch pipeline II, and a safety valve is provided on the heating steam delivery main pipeline at the rear of the pressure reducing valve;

[0008] The reversing valve is connected to the pneumatic angle valve I and the pneumatic angle valve II through two control air pipes to control its switch, and also includes a pneumatic angle valve III and a pneumatic shuttle valve. The pneumatic angle valve III is arranged in the main heating steam delivery pipeline and placed between the pressure reducing valve and the safety valve. A pneumatic shuttle valve is connected between the two control air pipes, and at the same time, the pneumatic shuttle valve is connected to the pneumatic angle valve III.

[0009] Among them, the reversing valve is connected to the pneumatic angle valve I through the compressed air pipe I to control its switch, the reversing valve is connected to the pneumatic angle valve II through the compressed air pipe II to control its switch, the pneumatic shuttle valve is connected between the compressed air pipe I and the compressed air pipe II, and at the same time, the pneumatic shuttle valve is connected to the pneumatic angle valve III through the compressed air pipe III.

[0010] Furthermore, the reversing valve is a three-position four-way reversing valve.

[0011] The advantages of this utility model compared with the prior art:

[0012] This solution installs a pneumatic angle valve between the pressure reducing valve and the safety valve, connects a pneumatic shuttle valve between the two control air pipes, separates the two compressed air into one path each and enters the two air inlets of the pneumatic shuttle valve, and the air outlet of the pneumatic shuttle valve is connected to the installed pneumatic angle valve through another compressed air pipe; after the modification, when the pneumatic angle valve corresponding to any heating material tank is opened or closed, the installed pneumatic angle valve III opens or closes the supplied steam at the same time, and when the heating is stopped, the steam at the safety valve is cut off due to the closure of the installed pneumatic angle valve III, and the steam will not be activated to exhaust; therefore, the installed pneumatic angle valve III can be opened or closed simultaneously with any heating material tank; this structure can be realized by using a pneumatic valve, without adding a solenoid valve and modifying the control program, and can eliminate the frequent activation of the safety valve, avoid the waste of steam energy, and reduce the damage to the safety valve seal while meeting normal use and safety requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] 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 of 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.

[0015] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0016] See also Figure 1 , describe the embodiments of the present utility model in detail.

[0017] Example: Tank heating structure with heating steam pipe safety valve control, see Figure 1 As shown, it includes a heating material tank Ⅰ1, a heating material tank Ⅱ2, a pressure reducing valve 3, a reversing valve 9, and a safety valve 10.

[0018] The heating steam delivery main pipeline 4 is connected to the heating material tank Ⅰ1 through the heating steam delivery branch pipeline Ⅰ5 to deliver heating steam to it. The heating steam delivery main pipeline 4 is connected to the heating material tank Ⅱ2 through the heating steam delivery branch pipeline Ⅱ8 to deliver heating steam to it. The heating steam delivery main pipeline 4 is provided with a pressure reducing valve 3, the heating steam delivery branch pipeline Ⅰ5 is provided with a pneumatic angle valve Ⅰ6, and the heating steam delivery branch pipeline Ⅱ8 is provided with a pneumatic angle valve Ⅱ7. The heating steam delivery main pipeline 4 is provided with a safety valve 10 at the rear of the pressure reducing valve 3 (that is, between the heating steam delivery main pipeline 4 and the two heating steam delivery branch pipelines).

[0019] The reversing valve 9 preferably adopts a three-position four-way reversing valve. The reversing valve 9 is connected to the pneumatic angle valve I6 and the pneumatic angle valve II7 through two control air pipes to control its switch. It also includes a pneumatic angle valve III11 and a pneumatic shuttle valve 12. The pneumatic angle valve III11 is arranged on the heating steam delivery main pipeline 4 and is placed between the pressure reducing valve 3 and the safety valve 10. The pneumatic shuttle valve 12 is connected between the two control air pipes, and at the same time, the pneumatic shuttle valve 12 is connected to the pneumatic angle valve III11.

[0020] Specifically, the reversing valve 9 is connected to the pneumatic angle valve I6 through the compressed air pipe I13 to control its switch, the reversing valve 9 is connected to the pneumatic angle valve II7 through the compressed air pipe II14 to control its switch, the two air inlets of the pneumatic shuttle valve 12 are connected between the compressed air pipe I13 and the compressed air pipe II14, and at the same time, the air outlet of the pneumatic shuttle valve 12 is connected to the pneumatic angle valve III11 through the compressed air pipe III15.

[0021] In this embodiment, a pneumatic angle valve III11 is installed between the pressure reducing valve 3 and the safety valve 10, and a pneumatic shuttle valve 12 is connected between the two control air pipes, so that one of the two compressed air is separated into two air inlets of the pneumatic shuttle valve 12, and the air outlet of the pneumatic shuttle valve 12 is connected to the installed pneumatic angle valve III11 through another compressed air pipe III15. After the modification, when the pneumatic angle valve corresponding to any heating material tank is opened or closed, the installed pneumatic angle valve III11 opens or closes the steam supply at the same time. When the heating is stopped, the steam at the safety valve 10 is cut off due to the closure of the installed pneumatic angle valve III11, and the steam will not be started and exhausted; therefore, the installed pneumatic angle valve III11 is used to realize opening or closing at the same time with any heating material tank. This structure can be realized by adding a pneumatic valve, without adding a solenoid valve and modifying the control program. Under the condition of meeting normal use and safety requirements, it eliminates the frequent starting of the safety valve, avoids the waste of steam energy, and reduces the damage to the safety valve seal.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A material tank heating structure controlled by a heating steam pipe safety valve, comprising a heating material tank I (1), a heating material tank II (2), a pressure reducing valve (3), a reversing valve (9), and a safety valve (10); The heating steam delivery main pipeline (4) is connected to the heating material tank I (1) and the heating material tank II (2) respectively through the heating steam delivery branch pipeline I (5) and the heating steam delivery branch pipeline II (8) to deliver heating steam thereto; the heating steam delivery main pipeline (4) is provided with a pressure reducing valve (3); the heating steam delivery branch pipeline I (5) is provided with a pneumatic angle valve I (6); the heating steam delivery branch pipeline II (8) is provided with a pneumatic angle valve II (7); the heating steam delivery main pipeline (4) is provided with a safety valve (10) at the rear of the pressure reducing valve (3); The reversing valve (9) is connected to the pneumatic angle valve I (6) and the pneumatic angle valve II (7) through two control air pipes to control the switch thereof, and is characterized in that: It also comprises a pneumatic angle valve III (11) and a pneumatic shuttle valve (12), wherein the pneumatic angle valve III (11) is arranged on the heating steam delivery main pipeline (4) and is placed between the pressure reducing valve (3) and the safety valve (10), and the pneumatic shuttle valve (12) is connected between the two control air pipes, and at the same time, the pneumatic shuttle valve (12) is connected to the pneumatic angle valve III (11).

2. The tank heating structure with heating steam pipe safety valve control according to claim 1 is characterized in that: The reversing valve (9) is connected to the pneumatic angle valve I (6) via the compressed air pipe I (13) to control its opening and closing. The reversing valve (9) is connected to the pneumatic angle valve II (7) via the compressed air pipe II (14) to control its opening and closing. The pneumatic shuttle valve (12) is connected between the compressed air pipe I (13) and the compressed air pipe II (14). At the same time, the pneumatic shuttle valve (12) is connected to the pneumatic angle valve III (11) via the compressed air pipe III (15).

3. The tank heating structure with heating steam pipe safety valve control according to claim 2 is characterized in that: The reversing valve (9) is a three-position four-way reversing valve.

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