CN214273908U - Positive pressure adjustable diaphragm pump - Google Patents
Positive pressure adjustable diaphragm pump Download PDFInfo
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- CN214273908U CN214273908U CN202023105244.6U CN202023105244U CN214273908U CN 214273908 U CN214273908 U CN 214273908U CN 202023105244 U CN202023105244 U CN 202023105244U CN 214273908 U CN214273908 U CN 214273908U
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- diaphragm pump
- pressure relief
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Abstract
The utility model relates to the technical field of machinery. The positive pressure adjustable diaphragm pump comprises a diaphragm pump main body, wherein the diaphragm pump main body comprises an air inlet valve block, an air outlet valve block, a pump seat and a pump cover, an air inlet channel and an air outlet channel are formed in the pump cover, the air inlet valve block is mounted on the air inlet channel, the air outlet valve block is mounted on the air outlet channel, the positive pressure adjustable diaphragm pump also comprises a pressure regulating mechanism, and a mounting hole for detachably connecting the pressure regulating mechanism is formed in the side wall of the pump cover; the pressure regulating mechanism comprises a top head, a pressure relief valve sleeve, a spring, an adjusting nut and a pressure relief valve core; the left end of the discharge valve sleeve is in threaded connection with the mounting hole, a top, a spring and a discharge valve core are sequentially mounted in the discharge valve sleeve from left to right, the left end of the discharge valve sleeve is provided with an air hole, and the top props against the air hole; the pressure relief valve core is provided with a flow guide hole communicated left and right, the pressure relief valve core is in threaded connection with the pressure relief valve sleeve, the periphery of the pressure relief valve core is in threaded connection with an adjusting nut, and the adjusting nut is abutted to the pressure relief valve sleeve. This patent is integrated to have the pressure regulating mechanism, is convenient for realize the regulation of diaphragm pump output exhaust pressure.
Description
Technical Field
The utility model relates to the technical field of machinery, specifically diaphragm pump.
Background
The diaphragm pump mainly comprises a motor, an eccentric wheel mechanism, an elastic diaphragm, an air inlet valve plate, an air outlet valve plate, a pump seat and a pump cover. The diaphragm pump converts the rotation motion of the motor into the up-and-down reciprocating motion of the elastic diaphragm through the eccentric wheel mechanism, thereby realizing the air suction and exhaust processes of the diaphragm pump through the air inlet valve plate and the air exhaust valve plate in a circulating manner.
Chinese patent publication No. CN209053769U discloses a diaphragm pump. The output positive pressure of the existing diaphragm pump cannot be finely adjusted, and a pressure regulating valve needs to be additionally connected with an exhaust interface of the exhaust valve, so that the diaphragm pump is complicated.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a diaphragm pump with adjustable malleation to solve the technical problem that the exhaust malleation of current diaphragm pump can't be adjusted.
In order to achieve the above object, the present invention provides a positive pressure adjustable diaphragm pump, which comprises a diaphragm pump main body, wherein the diaphragm pump main body comprises an air inlet valve plate, an air outlet valve plate, a pump seat and a pump cover, the pump seat is detachably connected with the pump cover, the pump cover is provided with an air inlet channel and an air outlet channel, the side of the pump cover is provided with an air outlet communicated with the air inlet channel and the air outlet channel, the air inlet channel is provided with the air inlet valve plate, the air outlet channel is provided with the air outlet valve plate, the positive pressure adjustable diaphragm pump is characterized by further comprising a pressure adjusting mechanism, the side wall of the pump cover is provided with an installation hole for detachably connecting the pressure adjusting mechanism, and the installation hole is communicated with the air outlet channel;
the pressure regulating mechanism comprises a top head, a pressure relief valve sleeve, a spring, an adjusting nut and a pressure relief valve core;
the left end of the discharge valve sleeve is in threaded connection with the mounting hole,
the top, the spring and the relief valve core are sequentially arranged in the relief valve sleeve from left to right, the left end of the relief valve sleeve is provided with an air hole, and the top is propped against the air hole;
the pressure relief valve is characterized in that a left and right communicated flow guide hole is formed in the pressure relief valve core, the pressure relief valve core is in threaded connection with the pressure relief valve sleeve, the periphery of the pressure relief valve core is in threaded connection with the adjusting nut, and the adjusting nut is abutted against the pressure relief valve sleeve.
This patent is through optimizing the combination of diaphragm pump, and the integration has the pressure regulating mechanism, is convenient for realize the regulation of diaphragm pump output and exhaust pressure.
Further preferably, the cross section of the bleed valve sleeve is polygonal.
The rotation of the discharge valve sleeve is convenient to realize.
Preferably, the inner wall of the air hole comprises a cylindrical hole and a conical hole which are arranged on the left and right sides, the inner diameters of the cylindrical hole are equal on the left and right sides, and the inner diameter of the conical hole is a conical surface with the inner diameter increasing from left to right;
the outer contour of the plug is in a conical shape matched with the inner wall of the conical hole.
The sealing effect is convenient to guarantee.
Preferably, the pump cover is provided with a left threaded hole and a right threaded hole which are arranged on the left and right sides, the left threaded hole is communicated with the air inlet channel, and the right threaded hole is communicated with the exhaust channel;
the left threaded hole is in threaded connection with an air inlet sealing screw, and a sealing ring is arranged at the joint of the air inlet sealing screw and the pump cover;
the right threaded hole is in threaded connection with a row of air-tight seal screws, and sealing rings are arranged at the joints of the air-tight seal screws and the pump cover.
The sealing effect is convenient to guarantee.
Preferably, the left end and the right end of the pump seat are both open, and the right end of the pump seat is detachably connected with a baffle;
the left end of the pump seat is detachably connected with the motor.
Is convenient for assembly and maintenance.
Preferably, the diaphragm pump main body comprises a motor, a diaphragm and a transmission mechanism for driving the diaphragm to reciprocate up and down, and the transmission mechanism comprises an eccentric shaft, an eccentric block, a pull rod and a bearing;
the power output shaft of the motor is detachably connected with the deviation block, the deviation block is connected with an eccentric shaft in an interference fit manner, the eccentric shaft is parallel to the central axis of the power output shaft of the motor, the bearing is sleeved on the periphery of the eccentric shaft, the periphery of the bearing is positioned in an open ring at the lower end of the pull rod, and an open ring at the lower end of the pull rod is locked through a screw;
the outer edge of the diaphragm is clamped between the pump base and the pump cover, a screw insert is embedded in the lower end of the diaphragm, and the screw insert is in threaded connection with the upper end of the pull rod.
The up-and-down transmission of the diaphragm is convenient.
Further preferably, a balance block is detachably connected to the eccentric block through a bolt, and the balance block and the eccentric shaft are arranged on the opposite sides of the eccentric block.
The balance of the motor in the rotating process is convenient to ensure.
Further preferably, a bushing is sleeved on the eccentric shaft, and the bushing is clamped between the eccentric block and the bearing.
The isolation between the bearing and the eccentric block is convenient to realize.
Preferably, the left end of the eccentric block is provided with a jack sleeved into a power output shaft of the motor;
a fastening screw is connected to the eccentric block in a threaded manner and abuts against a power output shaft of the motor;
and the fastening screw is also in threaded connection with a fastening nut, and the fastening nut is abutted to the eccentric block.
Preferably, the air inlet valve plate and the air outlet valve plate respectively comprise a conical insertion part, a cylindrical installation part and a sheet-shaped shielding part which are arranged along the axial direction;
the outer diameter of the conical insertion part increases from outside to inside along the axial direction, and the outer diameter of the conical insertion part at the side of the connecting cylindrical mounting part is larger than that of the cylindrical mounting part.
The installation is convenient.
Drawings
Fig. 1 is a sectional view of embodiment 1 of the present invention in an exhaust state;
fig. 2 is a plan view of embodiment 1 of the present invention;
fig. 3 is a sectional view of embodiment 1 of the present invention in an intake state.
In the figure: 1. a motor fan blade; 2. a motor; 3. a power take-off shaft; 4. m4 screw; 5. a pump mount; 6. a pump cover; 7. an air inlet valve plate; 8. an air inlet O-shaped sealing ring; 9. an air intake seal screw; 10. an exhaust O-shaped sealing ring; 11. an exhaust seal screw; 12. an exhaust valve plate; 13. ejecting the head; 14. a relief valve housing; 15. a spring; 16. adjusting the nut; 17. a relief valve core; 18. a membrane; 19. a screw insert; 20. a pull rod; 21. a bearing; 22. a bushing; 23. an eccentric shaft; 24. an eccentric block; 25. m3 screw; 26. a self-tapping screw; 27. a baffle plate; 28. a counterbalance; 29. a bolt; 30. fastening screws; 31. fastening a nut; 32. and (4) screws.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, embodiment 1: the positive pressure adjustable diaphragm pump comprises a diaphragm pump main body, wherein the diaphragm pump main body comprises a motor 2, a diaphragm 18, a transmission mechanism for driving the diaphragm 18 to reciprocate up and down, an air inlet valve plate 7, an air outlet valve plate 12, a pump base 5 and a pump cover 6. The pump seat 5 is detachably connected with the pump cover 6 through a screw 32, an air inlet channel and an exhaust channel are formed in the pump cover 6, an air inlet communicated with the air inlet channel and an air outlet communicated with the exhaust channel are formed in the side face of the pump cover 6, an air inlet valve plate 7 is installed on the air inlet channel, and an exhaust valve plate 12 is installed on the exhaust channel.
Still include a pressure regulating mechanism, offer the mounting hole that is used for dismantling to connect pressure regulating mechanism on the lateral wall of pump cover 6, the mounting hole switches on with exhaust passage. And is located in the area between the exhaust port of the exhaust channel and the exhaust valve plate. The pressure regulating mechanism comprises a top head 13, a pressure relief valve sleeve 14, a spring 15, an adjusting nut 16 and a pressure relief valve core 17; the left end of the valve releasing sleeve 14 is in threaded connection with the mounting hole, a top 13, a spring 15 and a valve releasing core 17 are sequentially mounted in the valve releasing sleeve 14 from left to right, the left end of the valve releasing sleeve 14 is an air hole, the top 13 props against the air hole, a left-right conduction flow guide hole is formed in the valve releasing core 17, the valve releasing core 17 is in threaded connection with the valve releasing sleeve 14, the periphery of the valve releasing core 17 is in threaded connection with an adjusting nut 16, and the adjusting nut 16 abuts against the valve releasing sleeve 14. This patent is through optimizing the combination of diaphragm pump, and the integration has the pressure regulating mechanism, is convenient for realize the regulation of diaphragm pump output and exhaust pressure.
The upper right hand corner of fig. 1 and 3 shows a half-section view of the pressure regulating mechanism.
The cross section of the bleed sleeve 14 is polygonal. Rotation of the bleed sleeve 14 is facilitated. The cross section of the pilot hole of the drain spool 17 may be polygonal. Rotation of the drain spool 17 is facilitated.
The inner wall of the air hole comprises a cylindrical hole and a conical hole which are arranged on the left and right sides, the inner diameter of the cylindrical hole is equal on the left and right sides, and the inner diameter of the conical hole is a conical surface with the inner diameter increasing from left to right; the outer contour of the plug 13 is in a cone shape matched with the inner wall of the conical hole. The sealing effect is convenient to guarantee.
The pump cover 6 is provided with a left threaded hole and a right threaded hole which are arranged on the left and the right, the left threaded hole is communicated with the air inlet channel, and the right threaded hole is communicated with the exhaust channel; the left threaded hole is in threaded connection with an air inlet sealing screw 9, and an air inlet O-shaped sealing ring 8 is arranged at the joint of the air inlet sealing screw 9 and the pump cover 6; the right threaded hole is in threaded connection with a row of air sealing screws 11, and an air exhaust O-shaped sealing ring 10 is arranged at the joint of the row of air sealing screws 11 and the pump cover 6. The sealing effect is convenient to guarantee.
The left end and the right end of the pump base 5 are both opened, and the right end of the pump base 5 is detachably connected with a baffle 27 through a tapping screw 26; the left end of the pump base 5 is detachably connected with the motor 2 through an M4 screw 4. Is convenient for assembly and maintenance.
The transmission mechanism comprises an eccentric shaft 23, an eccentric block 24, a pull rod 20 and a bearing 21. The motor is a double output shaft motor. An output shaft at the left end of the motor 2 is connected with a motor fan blade 1. The right end of the motor 2 extends out of a power output shaft. A deviation block is detachably connected to a power output shaft of the motor 2, an eccentric shaft 23 is connected to an eccentric block 24 in an interference fit manner, the eccentric shaft 23 is parallel to but not collinear with the central axis of the power output shaft of the motor 2, a bearing 21 is sleeved on the periphery of the eccentric shaft 23, the periphery of the bearing 21 is located in an open ring at the lower end of the pull rod 20, and an open ring at the lower end of the pull rod 20 is locked by an M3 screw 25; the outer edge of the diaphragm 18 is clamped between the pump base 5 and the pump cover 6, a screw insert 19 is embedded in the lower end of the diaphragm 18, and the screw insert 19 is in threaded connection with the upper end of the pull rod 20. Facilitating the up and down motion of the diaphragm 18.
A balance weight 28 is detachably attached to the eccentric mass 24 by a bolt 29, and the balance weight 28 and the eccentric shaft 23 are disposed on opposite sides of the eccentric mass 24. The balance of the motor in the rotating process is convenient to ensure.
The eccentric shaft 23 is sleeved with a bushing 22, and the bushing 22 is clamped between the eccentric block 24 and the bearing 21. It is convenient to achieve isolation between the bearing 21 and the eccentric mass 24.
The left end of the eccentric block 24 is provided with a jack sleeved into a power output shaft of the motor 2; a fastening screw 30 is connected to the eccentric block 24 in a threaded manner, and the fastening screw 30 abuts against a power output shaft of the motor 2; the fastening screw 30 is further screwed with a fastening nut 31, and the fastening nut 31 abuts against the eccentric block 24.
The air inlet valve plate 7 and the air outlet valve plate 12 respectively comprise a conical insertion part, a cylindrical installation part and a sheet-shaped shielding part which are arranged along the axial direction; the outer diameter of the conical insertion part increases from outside to inside along the axial direction, and the outer diameter of the conical insertion part at the side of the connecting cylindrical mounting part is larger than that of the cylindrical mounting part. The installation is convenient.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The positive pressure adjustable diaphragm pump is characterized by further comprising a pressure regulating mechanism, wherein a mounting hole for detachably connecting the pressure regulating mechanism is formed in the side wall of the pump cover, and the mounting hole is communicated with the exhaust channel;
the pressure regulating mechanism comprises a top head, a pressure relief valve sleeve, a spring, an adjusting nut and a pressure relief valve core;
the left end of the discharge valve sleeve is in threaded connection with the mounting hole,
the top, the spring and the relief valve core are sequentially arranged in the relief valve sleeve from left to right, the left end of the relief valve sleeve is provided with an air hole, and the top is propped against the air hole;
the pressure relief valve is characterized in that a left and right communicated flow guide hole is formed in the pressure relief valve core, the pressure relief valve core is in threaded connection with the pressure relief valve sleeve, the periphery of the pressure relief valve core is in threaded connection with the adjusting nut, and the adjusting nut is abutted against the pressure relief valve sleeve.
2. The positive pressure adjustable diaphragm pump of claim 1, wherein: the cross section of the valve releasing sleeve is polygonal.
3. The positive pressure adjustable diaphragm pump of claim 1, wherein: the inner wall of the air hole comprises a cylindrical hole and a conical hole which are arranged on the left and right sides, the inner diameter of the cylindrical hole is equal on the left and right sides, and the inner diameter of the conical hole is a conical surface with the inner diameter increasing from left to right;
the outer contour of the plug is in a conical shape matched with the inner wall of the conical hole.
4. The positive pressure adjustable diaphragm pump of claim 1, wherein: the pump cover is provided with a left threaded hole and a right threaded hole which are arranged on the left and the right, the left threaded hole is communicated with the air inlet channel, and the right threaded hole is communicated with the exhaust channel;
the left threaded hole is in threaded connection with an air inlet sealing screw, and a sealing ring is arranged at the joint of the air inlet sealing screw and the pump cover;
the right threaded hole is in threaded connection with a row of air-tight seal screws, and sealing rings are arranged at the joints of the air-tight seal screws and the pump cover.
5. The positive pressure adjustable diaphragm pump of claim 1, wherein: the left end and the right end of the pump seat are both provided with openings, and the right end of the pump seat is detachably connected with a baffle plate;
the left end of the pump seat is detachably connected with the motor.
6. The positive pressure adjustable diaphragm pump of claim 1, wherein: the diaphragm pump main body comprises a motor, a diaphragm and a transmission mechanism for driving the diaphragm to reciprocate up and down, and the transmission mechanism comprises an eccentric shaft, an eccentric block, a pull rod and a bearing;
the power output shaft of the motor is detachably connected with the eccentric block, the eccentric block is connected with an eccentric shaft in an interference fit manner, the eccentric shaft is parallel to the central axis of the power output shaft of the motor, the bearing is sleeved on the periphery of the eccentric shaft, the periphery of the bearing is positioned in an open ring at the lower end of the pull rod, and an open ring at the lower end of the pull rod is locked through a screw;
the outer edge of the diaphragm is clamped between the pump base and the pump cover, a screw insert is embedded in the lower end of the diaphragm, and the screw insert is in threaded connection with the upper end of the pull rod.
7. The positive pressure adjustable diaphragm pump of claim 6, wherein: the eccentric block is detachably connected with a balance block through a bolt, and the balance block and the eccentric shaft are arranged on the opposite sides of the eccentric block.
8. The positive pressure adjustable diaphragm pump of claim 6, wherein: the eccentric shaft is sleeved with a bushing which is clamped between the eccentric block and the bearing.
9. The positive pressure adjustable diaphragm pump of claim 6, wherein: the left end of the eccentric block is provided with a jack sleeved with a power output shaft of the motor;
a fastening screw is connected to the eccentric block in a threaded manner and abuts against a power output shaft of the motor;
and the fastening screw is also in threaded connection with a fastening nut, and the fastening nut is abutted to the eccentric block.
10. The positive pressure adjustable diaphragm pump of claim 1, wherein: the air inlet valve plate and the air outlet valve plate respectively comprise a conical insertion part, a cylindrical installation part and a sheet-shaped shielding part which are arranged along the axial direction;
the outer diameter of the conical insertion part increases from outside to inside along the axial direction, and the outer diameter of the conical insertion part at the side of the connecting cylindrical mounting part is larger than that of the cylindrical mounting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023105244.6U CN214273908U (en) | 2020-12-21 | 2020-12-21 | Positive pressure adjustable diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023105244.6U CN214273908U (en) | 2020-12-21 | 2020-12-21 | Positive pressure adjustable diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214273908U true CN214273908U (en) | 2021-09-24 |
Family
ID=77800413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023105244.6U Active CN214273908U (en) | 2020-12-21 | 2020-12-21 | Positive pressure adjustable diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214273908U (en) |
-
2020
- 2020-12-21 CN CN202023105244.6U patent/CN214273908U/en active Active
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