CN204159108U - A kind of back purge system of shellfish catcher - Google Patents
A kind of back purge system of shellfish catcher Download PDFInfo
- Publication number
- CN204159108U CN204159108U CN201420619859.6U CN201420619859U CN204159108U CN 204159108 U CN204159108 U CN 204159108U CN 201420619859 U CN201420619859 U CN 201420619859U CN 204159108 U CN204159108 U CN 204159108U
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- China
- Prior art keywords
- axis
- blow
- filter screen
- shellfish catcher
- trap tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of back purge system of shellfish catcher, comprise the filter screen be arranged between shellfish catcher left shell and right shell body, the left shell of shellfish catcher is fixedly connected with by securing member with right shell body, right shell body installs a blow-off pipe, blow-off pipe connects a drive unit, an axis is installed at the axis place of filter screen, in the below of filter screen, joint place is provided with a trap tube with it, trapping cavity is formed between trap tube and filter screen, axis and trap tube are integral type structure, and both interconnect, middle the tip of the axis is fixedly connected with blow-off pipe.The beneficial effects of the utility model are: axis and trap tube are integral type structure, significantly increase the reliability that axis is connected with trap tube, extend short problem in service life, and structure are simple, easy to process, are convenient to install.
Description
Technical field
The utility model relates to a kind of shellfish catcher, particularly a kind of shellfish catcher with backwashing function.
Background technology
Shellfish catcher is mainly used in the safe service water system of SEC of coastal nuclear power plant, as the fore filter of heat exchanger, prevents shellfish be attached to follow-up equipment and cause damage to equipment.The shellfish catcher of current used in nuclear power station mostly adopts the form of strainer filtering, shellfish to be attached on filter screen to grow, and filter screen easily blocks, poor filtration effect, and service life is short.
Our company applied for the Patents of shellfish catcher, the patent No. is ZL 201120385505.6, technical scheme disclosed in this patent adds the device of backwash on filter net type shellfish catcher basis, but trap tube and axis are fixedly connected with by connecting rod in this patent, find in Long-Time Service process, this connected mode more easily lost efficacy, when blow-off pipe drives trap tube to carry out High Rotation Speed, produce centrifugal force, tube connector easily ruptures, and greatly reduces the service life of shellfish catcher.
Utility model content
In order to overcome the above-mentioned shortcoming of prior art, the utility model provides a kind of back purge system improving shellfish catcher service life.
The utility model solves the technical scheme that its technical problem adopts, a kind of back purge system of shellfish catcher, comprise the axis being arranged on shellfish catcher filter screen axis place and the blow-off pipe be arranged on shellfish catcher housing, in the below of shellfish catcher filter screen, joint place is provided with a trap tube with it, formed between trap tube and shellfish catcher filter screen and trap cavity, blow-off pipe connects a drive unit, axis and trap tube are integral type structure, and both interconnect, middle the tip of the axis is fixedly connected with blow-off pipe.
At the end of blow-off pipe, one blowoff valve is installed.
The beneficial effects of the utility model are: axis and trap tube are integral type structure, compared with original technology, significantly increase the reliability that axis is connected with trap tube, completely avoid short problem in shellfish catcher service life of causing because connecting rod fracture between axis and trap tube in actual use procedure, and structure is simple, easy to process, be convenient to install; In addition, blow-off pipe end installs blowoff valve, is attached to the shellfish of screen surface and the discharge of other impurity and collection when facilitating onsite application.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment.
In figure: 1. left shell; 2. shellfish catcher filter screen; 3. right shell body; 4. axis; 5. trap cavity; 6. trap tube; 7. blow-off pipe; 8. drive unit; 9. blowoff valve.
Detailed description of the invention
As shown in Figure 1, a kind of back purge system of shellfish catcher, comprise the axis 4 being arranged on shellfish catcher filter screen 2 axis place and the blow-off pipe 7 be arranged on shellfish catcher housing, shellfish catcher housing is made up of left shell 1 and right shell body 3, shellfish catcher filter screen 2 is arranged between left shell 1 and right shell body 3, left shell 1 and right shell body 3 are bolted to connection, blow-off pipe 7 is arranged on right shell body 3, connecting drive device 8 on blow-off pipe 7, in the below of shellfish catcher filter screen 2, joint place is provided with trap tube 6 with it, formed between trap tube 6 and shellfish catcher filter screen 2 and trap cavity 5, axis 4 and trap tube 6 are integral type structure, and both interconnect, end and the blow-off pipe 7 of axis 4 are bolted to connection, at the end of blow-off pipe 7, blowoff valve 9 can also be installed.
During use, medium enters from the lower end of right shell body 3, after shellfish catcher filter screen 2 filters, enter follow-up equipment through left shell 1.After opening drive unit 8, drive unit 8 drives blow-off pipe 7 to rotate, blow-off pipe 7 drives axis 4 to rotate, now, the trap tube 6 being set to integrative-structure with axis 4 also rotates, after the washing away of the scraping of trap tube 6 pairs of shellfish catcher filter screens 2 and flow media, the shellfish and other impurity that are attached to screen surface enter into trapping cavity 5, trap tube 6 and blow-off pipe 7 successively, then open blowoff valve 9 and can discharge foreign material.
Claims (2)
1. the back purge system of a shellfish catcher, comprise the axis being arranged on shellfish catcher filter screen axis place and the blow-off pipe be arranged on shellfish catcher housing, one trap tube is installed joint place with it in the below of described shellfish catcher filter screen, formed between described trap tube and shellfish catcher filter screen and trap cavity, described blow-off pipe connects a drive unit, it is characterized in that: described axis and described trap tube are integral type structure, and both interconnect, described middle the tip of the axis is fixedly connected with described blow-off pipe.
2. the back purge system of shellfish catcher according to claim 1, is characterized in that: install a blowoff valve at the end of described blow-off pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420619859.6U CN204159108U (en) | 2014-10-24 | 2014-10-24 | A kind of back purge system of shellfish catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420619859.6U CN204159108U (en) | 2014-10-24 | 2014-10-24 | A kind of back purge system of shellfish catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204159108U true CN204159108U (en) | 2015-02-18 |
Family
ID=52532839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420619859.6U Active CN204159108U (en) | 2014-10-24 | 2014-10-24 | A kind of back purge system of shellfish catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204159108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521639A (en) * | 2014-10-24 | 2016-04-27 | 江苏神通阀门股份有限公司 | Backwashing device of shellfish catcher |
-
2014
- 2014-10-24 CN CN201420619859.6U patent/CN204159108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105521639A (en) * | 2014-10-24 | 2016-04-27 | 江苏神通阀门股份有限公司 | Backwashing device of shellfish catcher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |