CN211648418U - Reciprocating positive displacement diaphragm pump with novel diaphragm - Google Patents
Reciprocating positive displacement diaphragm pump with novel diaphragm Download PDFInfo
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- CN211648418U CN211648418U CN201922210070.0U CN201922210070U CN211648418U CN 211648418 U CN211648418 U CN 211648418U CN 201922210070 U CN201922210070 U CN 201922210070U CN 211648418 U CN211648418 U CN 211648418U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 22
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 7
- 239000012528 membrane Substances 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a reciprocating positive displacement diaphragm pump with a novel diaphragm, which comprises a pump head and a fluid cylinder body; a medium cavity is arranged in the pump head, and a hydraulic cavity is arranged in the hydraulic cylinder body; the medium cavity and the hydraulic cavity are divided into two closed spaces by a diaphragm; a diaphragm fixing support fixedly connected with the diaphragm and a spring telescopic unit detachably connected with the diaphragm fixing support are arranged in the hydraulic cavity; a plunger structural unit is also arranged in the hydraulic cavity and controls the plunger structural unit to reciprocate through a transmission structural unit; one end of the diaphragm fixing support is disc-shaped, the other end of the diaphragm fixing support is of a screw rod structure or a buckle structure, and the disc-shaped end of the diaphragm fixing support is fixedly connected with the diaphragm; the utility model discloses a diaphragm and fixed support structure characteristics of diaphragm have avoided porose traditional structure in the middle of the diaphragm, have reduced sealed high requirement, can improve the range of application of diaphragm greatly, increase of service life and spare parts change cycle to reduce the cost of diaphragm spare parts.
Description
Technical Field
The utility model belongs to the technical field of the diaphragm pump, especially, relate to a reciprocal positive displacement diaphragm pump with novel diaphragm.
Background
The diaphragm of the reciprocating positive displacement diaphragm pump requires reciprocating motion to change the volume, thereby realizing conveying. The existing technology is to connect a compression spring by using a metal part structure on a diaphragm, and the reciprocating motion of the diaphragm is realized by the tension of the spring and hydraulic pressure. However, such a diaphragm pump has a number of disadvantages, such as the diaphragm having a hole in the middle and therefore having a high sealing requirement; because the metal piece in front of the membrane (i.e. the fixing support for clamping the membrane) is in contact with the medium, the requirement on the corrosion resistance of the material of the part is high; in addition, when the membrane spare parts are replaced, the intact metal parts have to be replaced, and the requirements of energy conservation and environmental protection are not met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel diaphragm pump to the unavailable technical problem of diaphragm pump that above-mentioned diaphragm is with high costs and diaphragm leakproofness reduces and leads to realize improving the diaphragm cost, and reduce the purpose of the unavailable risk of pump that the diaphragm leads to because of sealed inefficacy.
In order to achieve the purpose, the novel reciprocating positive displacement diaphragm pump comprises a pump head and a fluid cylinder body; the pump head is internally provided with a medium cavity, and the medium cavity is respectively provided with an outlet and an inlet for conveying liquid medium; a hydraulic cavity is arranged in the hydraulic cylinder body; the medium cavity and the hydraulic cavity are divided into two closed spaces by a diaphragm; a diaphragm fixing support fixedly connected with the diaphragm and a spring telescopic unit detachably connected with the diaphragm fixing support are arranged in the hydraulic cavity; a plunger structural unit is also arranged in the hydraulic cavity and controls the plunger structural unit to reciprocate through a transmission structural unit; the diaphragm fixing support is disc-shaped at one end, and is of a screw rod structure or a buckle structure at the other end, one end of the disc-shaped is fixedly connected with the diaphragm, the spring telescopic unit comprises a spring and a connecting rod, and the spring penetrates into the connecting rod.
The novel diaphragm pump has the working principle that the transmission structure unit transmits power, the volume of liquid in the hydraulic cavity is changed through the reciprocating motion of the plunger structure unit, when the volume of the liquid in the hydraulic cavity is gradually increased, the liquid forms pressure on the diaphragm to drive the diaphragm to protrude towards the medium cavity, so that the liquid medium in the medium cavity is output from the outlet, and meanwhile, the spring telescopic unit extends; when the volume of the liquid in the hydraulic cavity is gradually reduced, the spring telescopic unit contracts and rebounds, so that the diaphragm is pulled in the opposite direction, the diaphragm is driven to protrude towards the liquid cavity, the liquid medium in the medium cavity is output from the outlet, and the liquid medium in the medium cavity is conveyed in a circulating reciprocating mode.
In particular, the membrane is a conventional choice for a person skilled in the art, is generally of a flexible material that can be elastically deformed and is resistant to corrosion, for example: polytetrafluoroethylene (PTFE);
furthermore, one side of the diaphragm contacting the medium cavity is a smooth plane, and the periphery of the diaphragm is sealed with the medium cavity without a gap. One side of the diaphragm, which is in contact with the hydraulic cavity, is fixedly connected with a diaphragm fixing support, and the diaphragm fixing support is arranged to form a connecting piece with the spring telescopic unit.
Furthermore, one end of the diaphragm fixing support is disc-shaped, the other end of the diaphragm fixing support is of a screw structure, and one disc-shaped end of the diaphragm fixing support is fixedly connected with the diaphragm; the connecting rod is used with the screw structure of the fixed support of diaphragm in a matched manner and is detachably connected with the fixed support of diaphragm, and the centers of the diaphragm center, the fixed support of diaphragm, the connecting rod and the screw structure are coincided.
Further, the connecting rod is detachably connected with a screw structure of the diaphragm fixing support, specifically, the screw structure is provided with external threads; the inner wall of the connecting rod is provided with an internal thread matched with the external thread; or the inner wall of the screw structure is provided with an internal thread, and correspondingly, the outer wall of the connecting rod is provided with an external thread matched with the internal thread.
Furthermore, one end of the diaphragm fixing support is disc-shaped, the other end of the diaphragm fixing support is of a buckle structure, and one disc-shaped end of the diaphragm fixing support is fixedly connected with the diaphragm; the tip of connecting rod is the draw-in groove form, and uses and detachable the connection with the fixed buckle structure cooperation that holds in the palm of diaphragm, the center coincidence of diaphragm center, the fixed support of diaphragm, connecting rod and buckle structure.
Compared with the prior art, the utility model has the following advantage:
1) the structure of the diaphragm and the diaphragm fixing support of the utility model is characterized in that the traditional structure with a hole in the middle of the diaphragm is avoided, the high requirement on sealing is reduced, and the application range of the diaphragm can be greatly improved;
2) the utility model discloses a diaphragm and fixed support structural feature of diaphragm, any hole is not opened to the diaphragm, does not have any leak point, can realize the effect that long-term use diaphragm leakproofness does not reduce, increase of service life and spare parts change cycle.
3) The utility model discloses a diaphragm and fixed support structural feature of diaphragm can omit the metalwork that is used for fixed diaphragm that lies in the medium intracavity in the traditional structure to reduce the cost of diaphragm spare part.
Drawings
Fig. 1 is a schematic structural view of the novel reciprocating positive displacement diaphragm pump of the present invention;
wherein, 1, a pump head; 2. a membrane; 2-1, fixing the membrane; 3. a cylinder body; 4. a spring extension unit; 4-1, connecting rod; 4-2. a spring; 5. a plunger structural unit; 6. a transmission structural unit; 7. a media chamber; 7-1, an outlet; 7-2. an inlet; 8. a hydraulic chamber; 9. and (4) a rear dead center.
Detailed Description
The invention is further illustrated below with reference to the following examples:
example 1
As shown in fig. 1, the present embodiment discloses a novel reciprocating positive displacement diaphragm pump, which comprises a pump head 1 and a fluid cylinder 3; a medium cavity 7 is arranged in the pump head 1, and the medium cavity 7 is respectively provided with an outlet 7-1 and an inlet 7-2 for conveying liquid media; a hydraulic cavity 8 is arranged in the hydraulic cylinder body 3; the medium chamber 7 and the hydraulic chamber 8 are divided into two closed spaces by the diaphragm 2 (the left side is called the medium chamber 7, and the right side is called the hydraulic chamber 8); the diaphragm is made of Polytetrafluoroethylene (PTFE); a diaphragm fixing support 2-1 fixedly connected with the diaphragm 2 and a spring telescopic unit 4 detachably connected with the diaphragm fixing support 2-1 are arranged in the hydraulic cavity 8; a plunger structural unit 5 is also arranged in the hydraulic cavity 8, and the plunger structural unit 5 controls the reciprocating motion of the plunger structural unit through a transmission structural unit 6; wherein, the fixed support 2-1 of diaphragm, its one end is the dish form, and the other end is screw rod structure or buckle structure, can realize in fact that the fixed support 2-1 of diaphragm and the dismantled connection of spring telescoping unit 4 can have a lot of possibilities structurally, and the utility model discloses in only one of them. The dish-shaped end is fixedly connected with the diaphragm 2, the spring telescopic unit 4 comprises a spring 4-2 and a connecting rod 4-1, and the spring 4-2 penetrates through the connecting rod 4-1.
With reference to fig. 1, the novel diaphragm pump has the working principle that a transmission structure unit 6 transmits power, the volume of liquid in a hydraulic cavity 8 is changed through the reciprocating motion of a plunger structure unit, when the volume of the liquid in the hydraulic cavity 8 is gradually increased, the liquid forms pressure on a diaphragm 2, the diaphragm 2 is driven to protrude towards a medium cavity 7, and therefore the liquid medium in the medium cavity 7 is output from an outlet 7-1, and meanwhile, a spring expansion unit 4 extends; when the volume of the liquid in the hydraulic cavity 8 is gradually reduced, the spring expansion unit 4 contracts and rebounds, so that the diaphragm 2 is pulled in the opposite direction, the diaphragm 2 is driven to protrude towards the liquid cavity, the liquid medium in the medium cavity 7 is output from the outlet 7-1, and the liquid medium in the medium cavity 7 is conveyed in a circulating reciprocating mode.
One side of the diaphragm 2 contacting the medium cavity 7 is a smooth plane, and the periphery of the diaphragm 2 is sealed with the medium cavity 7 without any gap. The side of the diaphragm 2 contacting the hydraulic chamber 8 is fixedly connected with a diaphragm fixing support 2-1, and the diaphragm fixing support 2-1 is arranged to form a connecting piece with the spring telescopic unit 4.
One end of the diaphragm fixing support 2-1 is disc-shaped, the other end of the diaphragm fixing support is of a screw structure, and the disc-shaped end is fixedly connected with the diaphragm 2; the connecting rod 4-1 is matched with and detachably connected with a screw structure of the diaphragm fixing support 2-1, and the center of the diaphragm 2, the center of the diaphragm fixing support 2-1, the connecting rod 4-1 and the center of the screw structure are coincided. The screw structure is provided with an external thread; the inner wall of the connecting rod 4-1 is provided with an internal thread matched with the external thread.
Example 2
The embodiment discloses a novel reciprocating positive displacement diaphragm pump, which comprises a pump head 1 and a hydraulic cylinder body 3; a medium cavity 7 is arranged in the pump head 1, and the medium cavity 7 is respectively provided with an outlet 7-1 and an inlet 7-2 for conveying liquid media; a hydraulic cavity 8 is arranged in the hydraulic cylinder body 3; the medium chamber 7 and the hydraulic chamber 8 are divided into two closed spaces by the diaphragm 2 (the left side is called the medium chamber 7, and the right side is called the hydraulic chamber 8); the diaphragm is made of Polytetrafluoroethylene (PTFE); a diaphragm fixing support 2-1 fixedly connected with the diaphragm 2 and a spring telescopic unit 4 detachably connected with the diaphragm fixing support 2-1 are arranged in the hydraulic cavity 8; a plunger structural unit 5 is also arranged in the hydraulic cavity 8, and the plunger structural unit 5 controls the reciprocating motion of the plunger structural unit through a transmission structural unit 6; wherein, the fixed support 2-1 of diaphragm, its one end is the dish form, and the other end is screw rod structure or buckle structure, can realize in fact that the fixed support 2-1 of diaphragm and the dismantled connection of spring telescoping unit 4 can have a lot of possibilities structurally, and the utility model discloses in only one of them. The dish-shaped end is fixedly connected with the diaphragm 2, the spring telescopic unit 4 comprises a spring 4-2 and a connecting rod 4-1, and the spring 4-2 penetrates through the connecting rod 4-1. Referring to the figure 1, when the plunger 5 advances, hydraulic pressure drives the diaphragm 2 to move forwards, liquid medium in the medium cavity 7 is conveyed to the outlet 7-1, when the plunger 5 retreats, the volume of the hydraulic cavity 8 is increased, pressure is reduced, and the diaphragm 2 moves to a backward position point under the stress; the volume of the medium cavity 7 is increased, the pressure is reduced, the diaphragm 2 moves, when the extreme value is reached, the diaphragm moves to a rear dead center 9 (the position of the maximum distance of the movement of the diaphragm fixing support 2-1 in the hydraulic cavity 8 is the rear dead center 9), the suction is realized without obstacles, and then the normal reciprocation is realized, and the medium is normally conveyed out.
One side of the diaphragm 2 contacting the medium cavity 7 is a smooth plane, and the periphery of the diaphragm 2 is sealed with the medium cavity 7 without any gap. The side of the diaphragm 2 contacting the hydraulic chamber 8 is fixedly connected with a diaphragm fixing support 2-1, and the diaphragm fixing support 2-1 is arranged to form a connecting piece with the spring telescopic unit 4.
One end of the diaphragm fixing support 2-1 is disc-shaped, the other end of the diaphragm fixing support is of a buckle structure, and the disc-shaped end is fixedly connected with the diaphragm 2; the end part of the connecting rod 4-1 is in a clamping groove shape, is matched with a buckle structure of the diaphragm fixing support 2-1 for use and is detachably connected, and the center of the diaphragm 2, the center of the diaphragm fixing support 2-1, the connecting rod 4-1 and the center of the buckle structure are superposed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. A reciprocating positive displacement diaphragm pump with a novel diaphragm is characterized in that: comprises a pump head and a liquid cylinder body; the pump head is internally provided with a medium cavity, and the medium cavity is respectively provided with an outlet and an inlet for conveying liquid medium; a hydraulic cavity is arranged in the hydraulic cylinder body; the medium cavity and the hydraulic cavity are divided into two closed spaces by a diaphragm; a diaphragm fixing support fixedly connected with the diaphragm and a spring telescopic unit detachably connected with the diaphragm fixing support are arranged in the hydraulic cavity; a plunger structural unit is also arranged in the hydraulic cavity and controls the plunger structural unit to reciprocate through a transmission structural unit; one end of the diaphragm fixing support is disc-shaped, the other end of the diaphragm fixing support is of a screw rod structure or a buckle structure, and the disc-shaped end of the diaphragm fixing support is fixedly connected with the diaphragm; and the spring telescopic unit comprises a spring and a connecting rod, and the spring penetrates into the connecting rod.
2. A reciprocating positive displacement diaphragm pump with a novel diaphragm according to claim 1 wherein: one side of the diaphragm, which is in contact with the medium cavity, is a smooth plane, and the periphery of the diaphragm is sealed with the medium cavity.
3. A reciprocating positive displacement diaphragm pump with a novel diaphragm according to claim 1 or 2, wherein: one end of the diaphragm fixing support is disc-shaped, and the other end of the diaphragm fixing support is of a screw rod structure; the connecting rod is used with the screw structure of the fixed support of diaphragm in a matched manner and is detachably connected with the fixed support of diaphragm, and the centers of the diaphragm center, the fixed support of diaphragm, the connecting rod and the screw structure are coincided.
4. A reciprocating positive displacement diaphragm pump with a novel diaphragm according to claim 3 wherein: the screw structure is provided with an external thread; the inner wall of the connecting rod is provided with an internal thread matched with the external thread; or the inner wall of the screw structure is provided with an internal thread, and correspondingly, the outer wall of the connecting rod is provided with an external thread matched with the internal thread.
5. A reciprocating positive displacement diaphragm pump with a novel diaphragm according to claim 1 or 2, wherein: one end of the diaphragm fixing support is disc-shaped, the other end of the diaphragm fixing support is of a buckle structure, and the disc-shaped end of the diaphragm fixing support is fixedly connected with the diaphragm; the tip of connecting rod is the draw-in groove form, and can use and detachable the connection with the fixed buckle structure cooperation that holds in the palm of diaphragm, the center coincidence of diaphragm center, the fixed support of diaphragm, connecting rod and buckle structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922210070.0U CN211648418U (en) | 2019-12-11 | 2019-12-11 | Reciprocating positive displacement diaphragm pump with novel diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922210070.0U CN211648418U (en) | 2019-12-11 | 2019-12-11 | Reciprocating positive displacement diaphragm pump with novel diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648418U true CN211648418U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922210070.0U Active CN211648418U (en) | 2019-12-11 | 2019-12-11 | Reciprocating positive displacement diaphragm pump with novel diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648418U (en) |
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2019
- 2019-12-11 CN CN201922210070.0U patent/CN211648418U/en active Active
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