CN101450844B - Balance type pressure-limiting and loading-limiting apparatus for electric dust collector - Google Patents
Balance type pressure-limiting and loading-limiting apparatus for electric dust collector Download PDFInfo
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- CN101450844B CN101450844B CN2008102352989A CN200810235298A CN101450844B CN 101450844 B CN101450844 B CN 101450844B CN 2008102352989 A CN2008102352989 A CN 2008102352989A CN 200810235298 A CN200810235298 A CN 200810235298A CN 101450844 B CN101450844 B CN 101450844B
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- limiting
- electric dust
- main core
- dust catcher
- loading
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Abstract
The invention relates to a balanced voltage-limiting and load-limiting device for an electric dust catcher, which belongs to the technical field of electric dust catcher. The invention aims to provide a device for limiting the voltage and the load and balancing the pressure for the electric dust catcher, which has the advantages of simple structure, reliable operation, low cost and long service life. The technical key points of the device are as follows: the upper end face of an inspection hole of a top plate (9) of the electric dust catcher is connected and fixed with a flanged body (2), and the top of the flanged body is connected and fixed with a sealing body (1) through bolts; the middle part of the sealing body is provided with a flow channel; a main core gate (3) is arranged inside the flanged body below the flow channel; upper ends of guide rods (5) pass through combined springs (6) and guide rod holes which are on the main core gate respectively and are in threaded connection with locking frames (4) which are arranged above the flow channel of the sealing body; and lower ends of the guide rods (5) are connected and fixed with a chassis (7) respectively. The device can control the load born by the top plate to be within a normal pressure range when the inside of the electric dust catcher is in the state of high negative pressure.
Description
Technical field
The present invention relates to the balance type pressure-limiting and loading-limiting apparatus of a kind of cottrell inside.
Background technology
When domestic and international conventional cottrell uses, cottrell inlet flue gas dust content usually≤100g/Nm
3, internal work pressure is everlasting ± 2000Pa numerical value in.Recent large-scale advanced person's clinker production line often adopts the new technology of the raw material powder all being sent to again preheating, decomposition and calcining after cottrell is collected, and the electricity entrance concentration that gathers dust can reach 1000g/Nm during this kiln mill joint operation
3More than, the work negative pressure is 6 times that conventional electricity is received device work negative pressure up to 12000Pa.Conventional cottrell top board structure can't bear high negative pressure load like this, must strengthen material specification or material meets the demands.Therefore, the cottrell cost of investment that is used for this high pressure is much higher than conventional cottrell.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, reliable, cost is low, the balance type pressure-limiting and loading-limiting apparatus for electric dust collector of long service life, makes the cottrell top board structure design routinely of high-tension electricity dust-precipitator top board structure.
Its technical scheme is: a kind of balance type pressure-limiting and loading-limiting apparatus for electric dust collector is characterized in that: the manhole upper surface of cottrell top board is connected and fixed a flange body, and the flange body top is connected and fixed by bolt and seal; The mid portion of seal offers gas channel, is provided with main core door in the flange body of gas channel below, offers the guide post hole around the main core door; The upper end of guide post is passed the guide post hole of offering on cluster spring and the main core door respectively successively, is threaded with the locking frame that is arranged on seal gas channel top, and its lower end is connected and fixed with the chassis respectively.
Its technique effect is: because after the back main air blower unlatching on the cottrell, the inner negative pressure that produces of cottrell produces pulling force to main core door, so the pulling force that produces when this negative pressure is greater than cluster spring during to the bounce of main core door, main core door is left behind, the gas channel that the mid portion of seal is offered is opened, and the inside and outside both sides of seal pressure reduction reduces with gas flow; Along with reducing of pressure reduction air-flow, under the effect of cluster spring bounce, main core door is pushed back, and is zero until pressure reduction, reaches dynamic equilibrium, and main core door is pushed back original position.Circulation primary, the purpose of realization pressure-limiting and loading-limiting.Therefore, balance type pressure-limiting and loading-limiting apparatus for electric dust collector of the present invention, even press the internal negative pressure design of 2000Pa, for the cottrell of internal negative pressure up to the collection cement industry kiln mill high concentrate dust of 12000Pa, also can reach the dynamic equilibrium of the inside and outside zero pressure of top board, the pressure loading that top board is born changes within conventional pressure limit, thereby for the cottrell upgrading of routine provides a kind of practicable device, has reduced the cost of investment of equipment significantly; Simultaneously, the flange body in this device both can be used as the dust cover of balance type pressure-limiting and loading-limiting apparatus, also can be used as the doorframe of access door, turned on the top and was connected with bolt between the seal, promptly can be used as the access path of maintainer's turnover; In addition, this apparatus structure is simple, and is reliable, do not have drive disk assembly, long service life.
Description of drawings
Fig. 1 is a structural representation of the present invention;
The specific embodiment
As shown in Figure 1, the manhole upper surface of cottrell top board 9 is connected and fixed a flange body 2, and the top of flange body is connected and fixed by bolt and seal 1.The mid portion of seal offers gas channel.Be provided with main core door 3 in the flange body of gas channel below, main core door is mushroom, and the sphere of its upper end cooperates with gas channel, realizes the opening and closing of fault to gas channel.Offer guide post 5 holes around the main core door, the upper end of guide post 5 is passed the guide post hole of offering on cluster spring 6 and the main core door respectively successively, is threaded with the locking frame 4 that is arranged on seal gas channel top, and its lower end is connected and fixed with chassis 7 respectively.Main core door is adjacent to together by the elastic reaction and the seal of cluster spring.Adjust the elastic reaction of cluster spring 6, can adjust the aperture of main core door.Elastic reaction is decided the body design by cluster spring by the pressure limiting parameter, and the size of this counter-force directly influences the normal use of cottrell and top board thereof.
Seal 1 is provided with handle 8, turns on the flange body top and is connected with bolt between the seal, utilizes this handle easily seal to be moved away, passes in and out access path in the flange body as the maintainer.
Its operation principle: when the back main air blower on the cottrell is opened, the inner negative pressure that produces of cottrell.Along with air door of fan strengthens, the pressure that acts on the cottrell top board inboard also increases gradually.When pressure increases to limit value (≤-2000Pa), be installed in main core door in this device on the top board manhole upper surface be opened (pulling force that negative pressure produces), the gas channel that is the inside and outside both sides of seal is opened, along with the main air blower air door further strengthens, the aperture of main core door also further strengthens, to keep or to reduce the pressure reduction of seal both sides, when the main air blower operation reaches rated value, the pressure reduction of seal both sides reduces, and under the bounce effect of cluster spring, main core door is slowly pushed back, its aperture reduces, until pressure reduction is zero, reaches dynamic equilibrium, and main core door is pushed back original position sealing gas channel.Circulation primary, the purpose of realization pressure-limiting and loading-limiting.The zero pressure difference state respectively supports the gas channel that some blowback apertures of porcelain vase end face form by cottrell and keeps.
Claims (3)
1. balance type pressure-limiting and loading-limiting apparatus for electric dust collector, it is characterized in that: the manhole upper surface of the top board of cottrell (9) is connected and fixed a flange body (2), and the flange body top is connected and fixed by bolt and seal (1); The mid portion of seal offers gas channel, is provided with main core door (3) in the flange body of gas channel below, offers guide post (5) hole around the main core door; The upper end of guide post (5) is passed guide post (5) hole of offering on cluster spring (6) and the main core door respectively successively, is threaded with the locking frame (4) that is arranged on seal gas channel top, and its lower end is connected and fixed with chassis (7) respectively.
2. a kind of balance type pressure-limiting and loading-limiting apparatus for electric dust collector according to claim 1 is characterized in that: described main core door (3) is mushroom.
3. a kind of balance type pressure-limiting and loading-limiting apparatus for electric dust collector according to claim 1 is characterized in that: described seal (1) is provided with handle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102352989A CN101450844B (en) | 2008-11-14 | 2008-11-14 | Balance type pressure-limiting and loading-limiting apparatus for electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102352989A CN101450844B (en) | 2008-11-14 | 2008-11-14 | Balance type pressure-limiting and loading-limiting apparatus for electric dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101450844A CN101450844A (en) | 2009-06-10 |
| CN101450844B true CN101450844B (en) | 2011-06-15 |
Family
ID=40733351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102352989A Expired - Fee Related CN101450844B (en) | 2008-11-14 | 2008-11-14 | Balance type pressure-limiting and loading-limiting apparatus for electric dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101450844B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1184070A (en) * | 1967-09-22 | 1970-03-11 | Sanko Seisakusho Kk | Improvements in or relating to Air Filters |
| CN2829890Y (en) * | 2005-10-14 | 2006-10-25 | 韶关市中星防腐安装工程有限公司 | Insertion airflow distributor of electrical vacuum cleaner |
-
2008
- 2008-11-14 CN CN2008102352989A patent/CN101450844B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1184070A (en) * | 1967-09-22 | 1970-03-11 | Sanko Seisakusho Kk | Improvements in or relating to Air Filters |
| CN2829890Y (en) * | 2005-10-14 | 2006-10-25 | 韶关市中星防腐安装工程有限公司 | Insertion airflow distributor of electrical vacuum cleaner |
Non-Patent Citations (1)
| Title |
|---|
| 高进等.CDPK-E型高效电除尘器的研制与应用.《第12届中国电除尘学术会议论文集》.2007,第87-93页. * |
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| Publication number | Publication date |
|---|---|
| CN101450844A (en) | 2009-06-10 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20121114 |