Self-unblocking system for balance pipe of powder conveying bin pump

Abstract

The utility model relates to the technical field of bin pump balance pipe cleaning, in particular to a powder conveying bin pump balance pipe self-cleaning system which comprises a middle bin and a bin pump which are connected through a feeding pipe, a feeding valve is arranged on the feeding pipe, and a balance pipe is further connected between the middle bin and the bin pump. A dust collection filter and a balance pipe communicating valve are sequentially installed on the balance pipe in the direction from the bin pump to the middle stock bin, a pulse back-blowing air source is further introduced into the balance pipe between the dust collection filter and the balance pipe communicating valve through a pipeline, and an electromagnetic pulse valve is connected to the pipeline. Dust passing through the balance pipe along with airflow in the bin pump is intercepted through the dust collection filter, the dust is prevented from hardening and blocking in the whole balance pipe, automatic dust removal of the bin pump communicating pipe is achieved, and therefore it is guaranteed that when the feeding valve is opened, the bin pump and the stock bin can be effectively communicated, feeding is stable, and the overall operation efficiency of the bin pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning a silo pump balance pipe, in particular to a self-blocking cleaning system for a powder delivery silo pump balance pipe. Background Art

[0002] When using a silo pump to transport powder materials, it is necessary to use an intermediate silo to regularly feed the silo pump. A balance pipe must also be connected between the intermediate silo and the silo pump to balance the air pressure. During the semi-dry flue gas desulfurization process in the steel industry, since the transported powder material has a certain moisture content, the powder will adhere to the wall of the balance pipe after the silo pump has been running for a period of time. In order to solve the problem of balance pipe blockage, the utility model proposes a self-clearing system for the balance pipe of a powder transport silo pump. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a self-cleaning system for the balance pipe of a powder conveying silo pump, which uses a dust collecting filter to intercept the dust in the silo pump that passes through the balance pipe with the airflow, to avoid dust compaction and blockage in the entire balance pipe, and realizes automatic cleaning of the silo pump connecting pipe, isolating dust from entering the rear section of the balance pipe, thereby ensuring that the silo pump and the silo can be effectively connected and the feeding can be stable when the feed valve is opened.

[0004] The powder conveying silo pump balance pipe self-clearing system in this scheme includes an intermediate silo and a silo pump connected by a feed pipe, and a feed valve is provided on the feed pipe. A balance pipe is also connected between the intermediate silo and the silo pump. A dust collection filter and a balance pipe connecting valve are installed on the balance pipe in sequence from the silo pump to the intermediate silo. A pulse backblowing air source is also introduced into the balance pipe between the dust collection filter and the balance pipe connecting valve through a pipeline, and an electromagnetic pulse valve is connected to the pipeline.

[0005] The technical solution further defined in the utility model is:

[0006] Furthermore, the feed valve includes a silo pump manual feed valve and / or a silo pump pneumatic feed valve connected to the feed pipe.

[0007] Furthermore, the height of the intermediate silo is greater than the height of the silo pump, and both ends of the feed pipe are respectively connected to the bottom of the intermediate silo and the top of the silo pump.

[0008] Furthermore, the intermediate silo is funnel-shaped.

[0009] The beneficial effects of the utility model are as follows: the utility model adds a dust collection filter and an electromagnetic pulse valve in the conveying silo pump system, utilizes the dust collection filter to intercept the dust in the silo pump that passes through the balance pipe with the airflow, avoids the dust from compacting and clogging in the entire balance pipe, realizes automatic cleaning of the silo pump connecting pipe, isolates dust from entering the rear section of the balance pipe, thereby ensuring that the silo pump and the silo can be effectively connected and stably feed when the feed valve is opened, reduces the workload of manual cleaning, and improves the overall operating efficiency of the silo pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a self-blocking system for a balance pipe of a powder delivery silo pump in an embodiment of the utility model;

[0011] Among them: 1. Intermediate silo; 2. Manual feed valve of silo pump; 3. Pneumatic feed valve of silo pump; 4. Silo pump; 5. Balance pipe connecting valve; 6. Electromagnetic pulse valve; 7. Dust filter; 8. Feed pipe; 9. Balance pipe. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, it is a schematic diagram of the self-clearing system for the balance pipe of the powder conveying silo pump provided in this embodiment, including an intermediate silo 1, a manual feed valve 2 of the silo pump, a pneumatic feed valve 3 of the silo pump, a silo pump 4, a balance pipe connecting valve 5, an electromagnetic pulse valve 6, a dust collection filter 7, a feed pipe 8 and a balance pipe 9. The height of the intermediate silo 1 is greater than the height of the silo pump 4, and the two ends of the feed pipe 8 are respectively connected to the bottom of the intermediate silo 1 and the top of the silo pump 4.

[0013] In this embodiment, the feed valve includes a silo pump manual feed valve 2 and a silo pump pneumatic feed valve 3 which are connected to the feed pipe 8 in sequence. The silo pump manual feed valve 2 is located above the silo pump pneumatic feed valve 3, and both can be opened and closed independently. In some other embodiments, the feed valve can be one or more, and can be pneumatic or manual.

[0014] In this embodiment, the balancing pipe 9 is connected between the intermediate silo 1 and the silo pump 4, and the dust filter 7 and the balancing pipe connecting valve 5 are installed in sequence on the balancing pipe 9 along the direction from the silo pump 4 to the intermediate silo 1. A pulse backblowing air source is also introduced into the balancing pipe 9 between the dust filter 7 and the balancing pipe connecting valve 5 through a pipeline, and an electromagnetic pulse valve 6 is connected and installed on the pipeline.

[0015] Based on this embodiment, the material in the intermediate silo 1 enters the silo pump 4 through the manual feed valve 2 of the silo pump and the pneumatic feed valve 3 of the silo pump; the top of the silo pump 4 is connected to the balance pipe 9 to the intermediate silo 1, so that the pressure on both sides is balanced under the feeding state, which facilitates the material to fall to the silo pump 4; the balance pipe 9 is connected to the silo pump 4, the dust filter 7, the balance pipe connecting valve 5 and the intermediate silo 1 in sequence, and the pulse backblowing air source is connected to the balance pipe 9 between the dust filter 7 and the balance pipe connecting valve 5 through the electromagnetic pulse valve 6; when the silo pump 4 is feeding, the manual feed valve 2 of the silo pump is in the normally open state, and the pneumatic feed valve 3 of the silo pump is interlocked with the balance pipe connecting valve 5 to open. The material falls into the silo pump 4; part of the mixed gas in the silo pump 4 goes to the intermediate silo 1 through the balance pipe 9, and the dust in the mixed gas is filtered by the dust filter 7, part of it adheres to the surface of the filter, and the remaining part falls into the silo pump 4; after the silo pump 4 is fed, the silo pump pneumatic feed valve 3 and the balance pipe connecting valve 5 are interlocked and closed, the electromagnetic pulse valve 6 is opened, and the dust filter 7 is back-blown, and the dust attached to the surface of the filter falls into the silo pump 4; the electromagnetic pulse valve 6 is closed, the conveying air source is opened, and the silo pump 4 is conveyed. The bottom of the silo pump 4 is connected to the compressed air for conveying and the compressed air for fluidization, and the outlet pipe is connected to the silo or material system.

[0016] In this embodiment, a dust filter 7 and an electromagnetic pulse valve 6 are added to the existing balance pipe 9. The dust filter 7 intercepts the dust in the silo pump 4 that passes through the balance pipe 9 with the air flow, so as to prevent the dust from being hardened and blocked in the entire balance pipe 9. At the same time, through electrical interlocking, under normal working conditions, the manual feed valve 2 of the silo pump is always open, the pneumatic feed valve 3 of the silo pump is opened, and the balance pipe connecting valve 5 is opened at the same time, so as to ensure that the material enters the silo pump 4 smoothly. After feeding, the pneumatic feed valve 3 of the silo pump is closed, the balance pipe connecting valve 5 is closed, the electromagnetic pulse valve 6 is opened, and the dust filter 7 is sprayed in a directional manner to blow the dust attached to the filter into the silo pump 4. The electromagnetic pulse valve 6 is closed, and the material is transported normally. Through this system, dynamic dust cleaning can be achieved, and dust is isolated from entering the balance pipe 9, so as to ensure that when the feed valve is opened, the silo pump 4 and the intermediate silo 1 can be effectively connected, the feeding is stable, and the workload of manual cleaning is reduced. By comparing the direct blowing form of the air source with the pulse spraying, the use of compressed air can be effectively reduced by more than 50%, and the backblowing time is shortened, thereby improving the overall operation rate of the silo pump 4.

[0017] In addition to the above embodiments, the present invention may also have other implementation modes; any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A powder delivery silo pump balance pipe self-clearing system, comprising an intermediate silo (1) and a silo pump (4) connected by a feed pipe (8), and a feed valve is provided on the feed pipe (8), characterized in that: A balancing pipe (9) is also connected between the intermediate silo (1) and the silo pump (4), and a dust collecting filter (7) and a balancing pipe connecting valve (5) are sequentially installed on the balancing pipe (9) along the direction from the silo pump (4) to the intermediate silo (1). A pulse back-blowing air source is also introduced into the balancing pipe (9) between the dust collecting filter (7) and the balancing pipe connecting valve (5) through a pipeline, and an electromagnetic pulse valve (6) is connected to the pipeline.

2. The powder delivery silo pump balance pipe self-clearing system according to claim 1 is characterized in that: The feed valve comprises a silo pump manual feed valve (2) and / or a silo pump pneumatic feed valve (3) connected to a feed pipe (8).

3. The powder delivery silo pump balance pipe self-clearing system according to claim 1 is characterized in that: The height of the intermediate silo (1) is greater than the height of the silo pump (4), and two ends of the feed pipe (8) are respectively connected to the bottom of the intermediate silo (1) and the top of the silo pump (4).

4. The powder delivery silo pump balance pipe self-blocking system according to claim 1, characterized in that: The intermediate silo (1) is funnel-shaped.

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