CN211836668U - Overload safety device for filter screen - Google Patents
Overload safety device for filter screen Download PDFInfo
- Publication number
- CN211836668U CN211836668U CN202020242246.0U CN202020242246U CN211836668U CN 211836668 U CN211836668 U CN 211836668U CN 202020242246 U CN202020242246 U CN 202020242246U CN 211836668 U CN211836668 U CN 211836668U
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- spring
- adjusting screw
- screw rod
- shield
- speed reducer
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Abstract
The utility model relates to a filter screen overload safety device, which comprises a counter torque lever, wherein one end of the counter torque lever is connected with a speed reducer, the other end of the counter torque lever is connected with an adjusting screw rod, the lower part of the adjusting screw rod is arranged in a housing in a penetrating way, a spring is sleeved on the adjusting screw rod arranged in the housing in a penetrating way, the bottom end of the adjusting screw rod is provided with a spring connecting seat with a larger diameter, the bottom end of the spring is fixed on the spring connecting seat, the top end of the spring is connected with the top surface of the inner side of the housing, a travel switch is arranged on the; the adjusting screw rod is sleeved with a shield on the part extending out of the shield, the shield covers the travel switch and the shield positioned on the upper part of the travel switch, and a contact block matched with the travel switch is installed in the shield. The utility model discloses rational in infrastructure, sensitivity is high, and the precompression volume through adjusting spring and travel switch's position can set up the warning load that the speed reducer bore, and convenient operation, stability are strong.
Description
Technical Field
The utility model belongs to the technical field of overload safeties technique and specifically relates to a filter screen overload safeties.
Background
The rotary filter screen rotates perpendicular to the water flow direction, and the screen plates for filtering impurities are arranged along the water flow direction and are connected into a ring through chain plates to be arranged in the water pump forebay. The speed reducer drives the main shaft of the rotary filter screen to rotate through the chain, and sundries are washed away by washing water and discharged into a sewage discharge channel after being brought up by the screen plate. The rotary filter screen plate is of a rectangular screen plate structure, and when the rotary filter screen is jammed and over-stressed, the mode adopted at present is that a safety pin is arranged at the end side of the speed reducer, the safety pin is cut off during overload, and the rotary filter screen stops running. Although the structure of the safety pin is simple, the sensitivity is poor, the adaptability to different speed reducer loads is poor, the situation that the safety pin is not disconnected when exceeding the safety load is easy to occur, and great hidden danger is caused to the safe operation of equipment.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects in the prior art, provides a filter screen overload safety device with a reasonable structure, is high in sensitivity, can set the alarm load borne by the speed reducer by adjusting the precompression amount of the spring and the position of the travel switch, and is convenient to operate and high in stability.
The utility model discloses the technical scheme who adopts as follows:
a filter screen overload safety device comprises a counter torque lever, wherein one end of the counter torque lever is connected with a speed reducer, the other end of the counter torque lever is connected with an adjusting screw rod, the lower part of the adjusting screw rod is arranged in a housing in a penetrating manner, a spring is sleeved on the adjusting screw rod arranged in the housing in a penetrating manner, a spring connecting seat with the diameter being increased is arranged at the bottom end of the adjusting screw rod, the bottom end of the spring is fixed on the spring connecting seat, the top end of the spring is connected with the top surface of the inner side of the housing, a travel switch is arranged on the outer side; the adjusting screw rod is sleeved with a shield on the part extending out of the shield, the shield covers the travel switch and the shield positioned on the upper part of the travel switch, and a contact block matched with the travel switch is installed in the shield.
As a further improvement of the above technical solution:
one end of the counter moment lever is connected to the shell of the speed reducer through a connecting piece, and the other end of the counter moment lever is provided with a connecting block which is sleeved with the adjusting screw rod.
The speed reducer adopts a shaft-mounted speed reducer, the shaft-mounted speed reducer has a trend of rotating around a main shaft when being loaded, the trend enables a counter torque lever to rotate around the main shaft of the speed reducer, an adjusting screw rod is driven to axially move through a connecting block, and finally a spring is subjected to tension. The support is welded on the embedded steel plate on the ground.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, convenient operation, sensitivity is high, and the precompression volume through adjusting spring and travel switch's position can set up the warning load that the speed reducer bore, and convenient operation, stability are strong.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention (another view angle of fig. 1).
Fig. 3 is a schematic view of the installation structure of the spring and the adjusting screw of the present invention.
Wherein: 1. adjusting the screw rod; 2. a counter moment lever; 3. a speed reducer; 4. connecting blocks; 5. a shield; 6. a contact block; 7. a spring; 8. a travel switch; 9. a housing; 10. a support; 11. spring connecting seat.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-3, the overload safety device for a filter screen of the present embodiment includes a counter torque lever 2, one end of which is connected to a speed reducer 3, the other end of which is connected to an adjusting screw 1, the lower part of the adjusting screw 1 is inserted into a housing 9, the adjusting screw 1 inserted into the housing 9 is sleeved with a spring 7, the bottom end of the adjusting screw 1 is provided with a spring connecting seat 11 with a larger diameter, the bottom end of the spring 7 is fixed on the spring connecting seat 11, the top end of the spring is connected to the top surface of the inner side of the housing 9, the outer side surface of the housing 9 is provided with a travel switch 8, the bottom of the housing 9 is fixedly connected to a fixedly installed support 10;
the adjusting screw 1 is sleeved with a shield 5 on the part extending out of the shield 9, the shield 5 covers the travel switch 8 and the shield 9 positioned on the upper part of the travel switch 8, and a contact block 6 matched with the travel switch 8 is arranged in the shield 5.
One end of the counter moment lever 2 is connected to the shell of the speed reducer 3 through a connecting piece, and the other end of the counter moment lever is provided with a connecting block 4 which is sleeved with the adjusting screw rod 1.
The speed reducer 3 adopts a shaft-mounted speed reducer, and when the shaft-mounted speed reducer is loaded, the shaft-mounted speed reducer tends to rotate around a main shaft, the trend enables the counter torque lever 2 to rotate around the main shaft of the speed reducer 3, the connecting block 4 drives the adjusting screw rod 1 to move axially, and finally the spring 7 is subjected to tension.
The utility model discloses at the implementation in-process, the welding of support 10 is on the pre-buried steel sheet on ground, and housing 9 passes through connecting piece and support 10 to be connected fixedly. The spring 7 is mounted in a housing 9 on which a travel switch 8 is mounted.
The counter moment lever 2 is connected to the shell of the shaft-mounted speed reducer 3 through a connecting piece and then connected to the adjusting screw rod 1 through a connecting block 4, a shield 5 is arranged on the adjusting screw rod 1, the shield 5 can move up and down along with the compression change of a spring 7, and a contact block 6 is arranged in the shield 5.
When the shaft-mounted speed reducer 3 is loaded in operation, the shaft-mounted speed reducer tends to rotate around the main shaft, and the counter torque lever 2 rotates around the main shaft, and finally the spring 7 is under tension. This tensile force increases as the load to which the speed reducer 3 is subjected increases. Therefore, the alarm load born by the speed reducer 3 can be set by adjusting the precompression amount of the spring 7 and the position of the travel switch.
When the load borne by the speed reducer 3 exceeds a preset value, the compression amount of the spring 7 exceeds the precompression amount, the protective cover 5 moves upwards along with the compression of the spring, the contact block 6 in the protective cover 5 triggers the travel switch 8 on the spring housing 9 to send an alarm signal to the filter screen control module to trigger overload alarm, the filter screen is automatically powered off to stop working, and the power device is protected. The utility model discloses a precompression volume and travel switch's of adjusting spring 7 position can be used to the alarm work of the speed reducer 3 of different alarm loads, and sensitivity and precision are high.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (4)
1. The utility model provides a filter screen overload safeties which characterized in that: the torque control device comprises a counter moment lever (2), one end of the counter moment lever is connected with a speed reducer (3), the other end of the counter moment lever is connected with an adjusting screw rod (1), the lower part of the adjusting screw rod (1) is arranged in a housing (9) in a penetrating mode, a spring (7) is sleeved on the adjusting screw rod (1) arranged in the housing (9) in the penetrating mode, a spring connecting seat (11) with the diameter being increased is arranged at the bottom end of the adjusting screw rod (1), the bottom end of the spring (7) is fixed on the spring connecting seat (11), the top end of the spring (7) is connected with the top surface of the inner side of the housing (9), a travel switch (8) is installed on the outer side surface;
the adjusting screw rod (1) is sleeved with a shield (5) on the part extending out of the shield (9), the shield (5) covers the travel switch (8) and the shield (9) positioned on the upper part of the travel switch (8), and the contact block (6) matched with the travel switch (8) is installed in the shield (5).
2. The screen overload safety device of claim 1, wherein: one end of the counter moment lever (2) is connected to the shell of the speed reducer (3) through a connecting piece, and the other end of the counter moment lever is provided with a connecting block (4) which is sleeved with the adjusting screw rod (1).
3. The screen overload safety device of claim 2, wherein: the speed reducer (3) adopts a shaft-mounted speed reducer, the shaft-mounted speed reducer has a trend of rotating around a main shaft when being loaded, the trend enables the counter torque lever (2) to rotate around the main shaft of the speed reducer (3), the connecting block (4) drives the adjusting screw rod (1) to axially move, and finally the spring (7) is subjected to tension.
4. The screen overload safety device of claim 1, wherein: the support (10) is welded on the embedded steel plate on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242246.0U CN211836668U (en) | 2020-03-02 | 2020-03-02 | Overload safety device for filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242246.0U CN211836668U (en) | 2020-03-02 | 2020-03-02 | Overload safety device for filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211836668U true CN211836668U (en) | 2020-11-03 |
Family
ID=73238295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020242246.0U Active CN211836668U (en) | 2020-03-02 | 2020-03-02 | Overload safety device for filter screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211836668U (en) |
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2020
- 2020-03-02 CN CN202020242246.0U patent/CN211836668U/en active Active
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