CN203979398U - A kind of clearance adjustable type coal pulverizer support seal arrangement - Google Patents
A kind of clearance adjustable type coal pulverizer support seal arrangement Download PDFInfo
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- CN203979398U CN203979398U CN201420414127.3U CN201420414127U CN203979398U CN 203979398 U CN203979398 U CN 203979398U CN 201420414127 U CN201420414127 U CN 201420414127U CN 203979398 U CN203979398 U CN 203979398U
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Abstract
The utility model discloses a kind of clearance adjustable type coal pulverizer support seal arrangement, comprise seal and lower seal body, lower seal body adopts the linkage structure of carbon ring and spring and is sleeved on coal pulverizer drive plate circumference and forms radial seal, upper seal comprises connecting ring, choke ring, bearing and pad, upper connecting ring is mounted by means of bolts on lower seal body, choke ring is looped around connecting ring circumference and supports by bearing, multiple pads are arranged between choke ring and bearing, the linkage structure of upper seal realizes the axial seal of coal pulverizer drive plate, and can adjust by the pad between increase and decrease choke ring and bearing the gap of drive plate and axial seal structure.Clearance adjustable type coal pulverizer support seal arrangement of the present utility model, simple in structure, can drive plate and support seal clearance be regulated, be compensated, therefore there is good sealing effect and can prevent the leakage powder phenomenon of the support part of coal pulverizer in running.
Description
Technical field
The utility model relates to coal pulverizer support seal arrangement technical field, is specifically related to a kind ofly prevent that coal pulverizer support and drive plate from leaking the clearance adjustable type coal pulverizer support seal arrangement of powder in rotation process.
Background technique
Now in power plant, because adopting operation under positive pressure to make to grind room pressure, coal pulverizer is greater than air pressure, it is many that this just causes coal pulverizer drive plate and support place in running to leak out, leak the phenomenon of powder, and the dust leaking has not only caused environmental pollution, affected workshop and carry out production strictly in line with rules and regulations, and can cause the heat of coal pulverizer to run off, reduced the working efficiency of coal pulverizer.
Be main and existing coal pulverizer seal arrangement is mainly following seal; by copper sheet, abrasive rubber or carbon ring carry out radial seal; as the Chinese utility model patent that the patent No. is 201020140236.2 has been announced a kind of mill spindle seal arrangement; dust-proof cover scaffold is fixedly connected with mill by bolt one; dust-proof cover is fixedly connected with mounting bracket by bolt two, and seal arrangement housing is fixedly connected with medium speed grinding body by filler ring; Straight-through labyrinth ring is fixedly connected with seal arrangement housing by bolt four, mineralization pressure chamber between straight-through labyrinth Huan Yu tri-road carbon rings, interior drain port staggered form labyrinth rotary packing ring is fixedly connected with dust-proof cover scaffold with screw five, and interior drain port staggered form labyrinth stationary seal ring is fixedly connected with seal arrangement housing with screw six.This technological scheme has proposed to adopt the apex combustion seal of straight-through labyrinth collar and carbon ring structure, the leakage powder that can not prevent axial direction but sealing only can prevent from radially leaking powder phenomenon.
Model utility content
In order to make up the deficiencies in the prior art, the utility model provides a kind of clearance adjustable type coal pulverizer support seal arrangement, this device has proposed a kind of adjustable sealing configuration in upper seal gap that coal pulverizer drive plate is carried out to axial seal on the basis of the radial seal structure of prior art, this device global design is the i.e. axial and Radial Combinations structure of upper-lower seal body, but because lower seal body is the radial seal structure that adopts carbon ring structure, and upper seal is clearance adjustable type axial seal structure, the gap that can adjust drive plate and sealing configuration by increase and decrease pad is to optimum position.
To achieve these goals, the utility model adopts following technological scheme.
A kind of clearance adjustable type coal pulverizer support seal arrangement, comprises seal and lower seal body; Lower seal body comprises carbon ring and spring, carbon ring be connected with spring and be sleeved on coal pulverizer drive plate circumference form radial seal structure; Upper seal comprises connecting ring, choke ring, bearing and pad; Upper connecting ring is mounted by means of bolts on lower seal body, and choke ring is looped around connecting ring circumference and supports by bearing, and multiple pads are arranged between choke ring and bearing; The linkage structure of upper seal realizes the axial seal of coal pulverizer drive plate, and can adjust by the pad between increase and decrease choke ring and bearing the gap of drive plate and axial seal structure.
Preferably, described choke ring is upper and lower flange arrangement, and adopts gusset and annulus to support, and its lower flange connects with bearing by bolt.
In above-mentioned arbitrary technological scheme, preferably, described bearing is upper and lower flange arrangement, and adopts two gussets to support, and its even circumferential distributes.
In above-mentioned arbitrary technological scheme, preferably, described upper connecting ring is fixedly mounted on lower seal body by bolt, plain washer and spring washer.
In above-mentioned arbitrary technological scheme, preferably, described choke ring is by being positioned at the seat supports below choke ring, and adopts bolt, nut, plain washer, spring washer to be fixed connection.
In above-mentioned arbitrary technological scheme, preferably, described bearing is bolted to connection on the lower flange of upper connecting ring.
In above-mentioned arbitrary technological scheme, preferably, described multiple pads are arranged in the middle of bearing and choke ring, quantity is installed makes choke ring realize fine setting up and down, and increase and decrease can be by swivel bolt in order to support when pad by increasing or reduce pad.
In above-mentioned arbitrary technological scheme preferably, described upper connecting ring and drive plate seam inner circle Spielpassung.
In above-mentioned arbitrary technological scheme preferably, the lower end surface Spielpassung of the upper-end surface of described choke ring and drive plate seam.
In above-mentioned arbitrary technological scheme, preferably, Indirect method can be carried out by the fine setting up and down of choke ring in gap, thereby forms the adjustable support seal arrangement in gap.
The utility model is a kind of for preventing that coal pulverizer support and drive plate from leaking the clearance adjustable type coal pulverizer support seal arrangement of powder at rotation process, it comprises seal and lower seal body, lower seal body adopts the linkage structure of carbon ring and spring and is sleeved on coal pulverizer drive plate circumference and forms radial seal, upper seal comprises connecting ring, choke ring, bearing and pad, upper connecting ring is mounted by means of bolts on lower seal body, choke ring is looped around connecting ring circumference and supports by bearing, bearing is bolted to connection on the lower flange of upper connecting ring, upper connecting ring and drive plate seam inner circle Spielpassung, choke ring upper-end surface and drive plate seam lower end surface Spielpassung, multiple pads are arranged between choke ring and bearing, the linkage structure of upper seal realizes the axial seal of coal pulverizer drive plate, and can adjust by the pad between increase and decrease choke ring and bearing the gap of drive plate and axial seal structure.
Clearance adjustable type coal pulverizer support seal arrangement of the present utility model, simple in structure, can drive plate and support seal clearance be regulated, be compensated, therefore there is good sealing effect and can prevent the leakage powder phenomenon of the support part of coal pulverizer in running.
Brief description of the drawings
Fig. 1 is according to the Standard figure of a preferred embodiment of clearance adjustable type coal pulverizer support seal arrangement of the present utility model;
Fig. 2 is according to choke ring and the support connecting structure figure of a preferred embodiment of clearance adjustable type coal pulverizer support seal arrangement of the present utility model;
Fig. 3 is according to the choke loops composition of a preferred embodiment of clearance adjustable type coal pulverizer support seal arrangement of the present utility model;
Fig. 4 to Fig. 6 is according to the seat structure figure of a preferred embodiment of clearance adjustable type coal pulverizer support seal arrangement of the present utility model;
Reference character:
1, upper connecting ring, 2, choke ring, 3, bearing, 4, lower seal body, 5, pad, 6, spring washer, 7, plain washer, 8,10 bolts, 9, nut.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated, below describe only conduct demonstration and explain, the utility model is not done to any pro forma restriction.
As shown in Figure 1, clearance adjustable type coal pulverizer support seal arrangement comprises seal and lower seal body 4, lower seal body 4 comprises carbon ring and spring, carbon ring be connected with spring and be sleeved on coal pulverizer drive plate circumference form radial seal structure, upper seal comprises connecting ring 1, choke ring 2, bearing 3 and pad 5, upper connecting ring 1 is fixedly mounted on lower seal body 4 by bolt 10, choke ring 2 is looped around connecting ring 1 circumference and supports by bearing 3, and multiple pads 5 are arranged between choke ring 2 and bearing 3.The linkage structure of the upper seal of this device realizes the axial seal of coal pulverizer drive plate, and can adjust by the pad between increase and decrease choke ring and bearing the gap of drive plate and axial seal structure.
Further as shown in Figures 2 to 6, choke ring 2 is for upper and lower flange arrangement and adopt gusset and annulus support, and its lower flange connects with bearing 3 by bolt; Bearing 3 is for upper and lower flange arrangement and adopt two gussets to support, and its even circumferential distributes; Upper connecting ring 1 is fixedly mounted on lower seal body 4 by bolt 10, plain washer 7 and spring washer 6.Choke ring 2 supports by being positioned at choke ring 2 bearing 3 below, and adopts bolt 8, nut 9, plain washer 7, spring washer 6 to be fixed connection, and bearing 3 is bolted to connection on the lower flange of upper connecting ring 1.Multiple pads 5 are arranged in the middle of bearing 3 and choke ring 2, and quantity is installed makes choke ring realize fine setting up and down by increasing or reduces pad, and can be by swivel bolt in order to support when increase and decrease pad.Upper connecting ring 1 and drive plate seam inner circle Spielpassung, the lower end surface Spielpassung of the upper-end surface of choke ring 2 and drive plate seam, Indirect method can be carried out by the fine setting up and down of choke ring 2 in gap, thereby forms the adjustable support seal arrangement in gap.
In concrete enforcement, this clearance adjustable type coal pulverizer support seal arrangement has made up the deficiencies in the prior art, a kind of adjustable sealing configuration in upper seal gap that coal pulverizer drive plate is carried out to axial seal has been proposed on the basis of radial seal structure, this device entirety is the i.e. axial and Radial Combinations structure of upper-lower seal body, but because lower seal body is that (it has proposition at a lot of patent files to the radial seal structure that adopts carbon ring structure, will not too much discuss at this), and upper seal is clearance adjustable type axial seal structure, the gap that just can adjust drive plate and sealing configuration by increase and decrease pad is to optimum position, prevent that coal pulverizer support and drive plate from leaking powder in rotation process.Particularly, this support seal arrangement is mainly divided into seal and lower seal body, wherein lower seal body 4 mainly comprises the structure such as carbon ring and spring and is welded on coal pulverizer support, and upper seal mainly comprises connecting ring 1, choke ring 2, bearing 3 and pad 5 etc., upper connecting ring 1 is by bolt 10, plain washer 7 and spring washer 6 are fixed on lower seal body, choke ring 2 adopts Spielpassung to be arranged on connecting ring circumference, choke ring 2 supports and adopts bolt 8 by bearing 3 below, nut 9, plain washer 7, spring washer 6 connects, it is middle with choke ring 2 that pad 5 is arranged on bearing 3, by increasing or reduce pad 5, choke ring 2 is finely tuned up and down, can be by swivel bolt 10 in order to support in the time of increase and decrease pad.Upper connecting ring 1 and drive plate seam inner circle Spielpassung, choke ring 2 upper-end surfaces and drive plate seam lower end surface Spielpassung, because power plant coal adopts operation under positive pressure, mill room pressure is greater than air pressure, if therefore this place's excesssive gap will make coal dust spill, and in coal pulverizer drive plate running, this gap, place can become greatly gradually, this just need to a kind ofly prevent spilling of coal dust by this place's gap length of real-time adjusting.And can adjust choke ring and move up by increasing pad, also with regard to Indirect method the gap of choke ring upper flange and drive plate seam lower end surface.The structural design of this support seal arrangement is simple, both adopted lower seal body to realize radial seal, adopted again upper seal to realize the axial seal of drive plate, axial clearance suitably regulates by choke ring, can effectively prevent power plant coal operation under positive pressure time, leaks out, leaks powder phenomenon.
The above is only that preferred implementation of the present utility model is described; not that scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineers and technicians in related domain make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (10)
1. a clearance adjustable type coal pulverizer support seal arrangement, comprise seal and lower seal body, described lower seal body comprises carbon ring and spring, described carbon ring is connected with spring and is sleeved on coal pulverizer drive plate circumference formation radial seal structure, it is characterized in that: described upper seal comprises connecting ring, choke ring, bearing and pad; Upper connecting ring is mounted by means of bolts on lower seal body, and choke ring is looped around connecting ring circumference and supports by bearing, and multiple pads are arranged between choke ring and bearing; The linkage structure of upper seal realizes the axial seal of coal pulverizer drive plate, and can adjust by the pad between increase and decrease choke ring and bearing the gap of drive plate and axial seal structure.
2. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1, is characterized in that: described choke ring is upper and lower flange arrangement, and adopts gusset and annulus to support, and its lower flange connects with bearing by bolt.
3. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1, is characterized in that: described bearing is upper and lower flange arrangement, and adopts two gussets to support, and its even circumferential distributes.
4. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1, is characterized in that: described upper connecting ring is fixedly mounted on lower seal body by bolt, plain washer and spring washer.
5. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1 or 2, is characterized in that: described choke ring is by being positioned at the seat supports below choke ring, and adopts bolt, nut, plain washer, spring washer to be fixed connection.
6. the clearance adjustable type coal pulverizer support seal arrangement as described in claim 1 or 3, is characterized in that: described bearing is bolted to connection on the lower flange of upper connecting ring.
7. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1, it is characterized in that: described multiple pads are arranged in the middle of bearing and choke ring, quantity is installed makes choke ring realize fine setting up and down by increasing or reduce pad, and increase and decrease can be by swivel bolt in order to support when pad.
8. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1, is characterized in that: described upper connecting ring and drive plate seam inner circle Spielpassung.
9. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 1, is characterized in that: the lower end surface Spielpassung of the upper-end surface of described choke ring and drive plate seam.
10. clearance adjustable type coal pulverizer support seal arrangement as claimed in claim 8 or 9, is characterized in that: Indirect method can be carried out by the fine setting up and down of choke ring in gap, thereby forms the adjustable support seal arrangement in gap.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414127.3U CN203979398U (en) | 2014-07-25 | 2014-07-25 | A kind of clearance adjustable type coal pulverizer support seal arrangement |
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| CN201420414127.3U CN203979398U (en) | 2014-07-25 | 2014-07-25 | A kind of clearance adjustable type coal pulverizer support seal arrangement |
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| CN203979398U true CN203979398U (en) | 2014-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552373A (en) * | 2017-09-07 | 2018-01-09 | 中稀天马新材料科技股份有限公司 | Environmental protection, sub- vacuum state solid material sizing equipment efficiently, practical |
-
2014
- 2014-07-25 CN CN201420414127.3U patent/CN203979398U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552373A (en) * | 2017-09-07 | 2018-01-09 | 中稀天马新材料科技股份有限公司 | Environmental protection, sub- vacuum state solid material sizing equipment efficiently, practical |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING ELECTRIC POWER EQUIPMENT GENERAL FACTORY C Free format text: FORMER NAME: BEIJING POWER EQUIPMENT GENERAL PLANT |
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| CP01 | Change in the name or title of a patent holder |
Address after: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee after: Co., Ltd of Beijing Electrical Equipment Factory Address before: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee before: Beijing Electric Power Equipment General Factory |