CN210265085U - Negative pressure pump - Google Patents
Negative pressure pump Download PDFInfo
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- CN210265085U CN210265085U CN201921181036.9U CN201921181036U CN210265085U CN 210265085 U CN210265085 U CN 210265085U CN 201921181036 U CN201921181036 U CN 201921181036U CN 210265085 U CN210265085 U CN 210265085U
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- pump
- cover
- pump cover
- diaphragm
- negative pressure
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Abstract
The utility model discloses a negative pressure pump, including the end cover, the end cover comprises first pump cover and second pump cover, first pump cover and second pump cover pass through bolted connection fixed, and all are provided with corresponding feed liquor pipe and drain pipe on first pump cover and the second pump cover, the ring clamp plate of L shape cross section has all been welded to the inboard one end that first pump cover and second pump cover are relative. The utility model discloses in, arrange the diaphragm between first pump cover and second pump cover, the installation and the change of the diaphragm of being convenient for, two compression chamber are also cut apart into with the end cover to the diaphragm simultaneously, when diaphragm reciprocating motion, be located feed liquor pipe and drain pipe on first pump cover and the second pump cover, go on in turn, realize continuous pump sending, work efficiency is higher for driven negative pressure pump, simultaneously the diaphragm is cut apart into two independent cavities with the inside space of end cover, consequently, can accomplish the pump sending of two kinds of different materials through a negative pressure pump, thereby saving equipment cost.
Description
Technical Field
The utility model relates to a vacuum pump field specifically is a negative pressure pump.
Background
The negative pressure pump is also called a micro vacuum pump, and is provided with a suction nozzle and an exhaust nozzle which are arranged one by one, vacuum or negative pressure can be continuously formed at an inlet, and micro positive pressure is formed at the exhaust nozzle. The working principle is as follows: the circular motion of the motor makes the diaphragm inside the pump reciprocate through a mechanical device, so that air in the pump cavity is compressed and stretched to form negative pressure, the air pumping opening is at the external atmospheric pressure to generate pressure difference, and the air is sucked into the pump cavity and then led out from the exhaust opening under the action of the pressure difference.
The existing micro negative pressure pump can only finish twice water inlet and twice water outlet when a diaphragm finishes a rotation period, relatively speaking, the utilization rate of work is low, and a piston pump capable of realizing higher efficiency usually needs a plurality of stretching chambers, and the structure is relatively complex.
To this end, we propose a negative pressure pump to solve the above problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a negative pressure pump to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a negative pressure pump, includes the end cover, the end cover comprises first pump cover and second pump cover, first pump cover and second pump cover pass through bolted connection fixed, and all are provided with corresponding feed liquor pipe and drain pipe on first pump cover and the second pump cover, the ring clamp plate of L shape cross section has all been welded to the relative one end inboard of first pump cover and second pump cover, the pressfitting has the diaphragm between the ring clamp plate, the middle part of diaphragm is connected fixedly with the one end of transmission shaft, the side bolted connection of second pump cover has the pump body, the other end of transmission shaft passes the second pump cover and extends to the inside of the pump body, the cooperation department cover that the transmission shaft is located second pump cover and the pump body is equipped with seal assembly.
As a further description of the above technical solution:
the liquid inlet pipe and the liquid outlet pipe are arranged on the first pump cover and the second pump cover in a staggered mode, movable cavity channels are arranged inside the liquid inlet pipe and the liquid outlet pipe, the inner diameter of each movable cavity channel is larger than that of the liquid inlet pipe and the liquid outlet pipe, and the movable cavity channels are provided with spherical pistons.
As a further description of the above technical solution:
the edge of the ring pressing plate close to the diaphragm is of a rounding structure, and annular pressing strips are embedded in the opposite sides of the ring pressing plate.
As a further description of the above technical solution:
the opposite side of the annular pressing plates is uniformly distributed with a plurality of positioning columns, the positioning columns on the two annular pressing plates are arranged in a staggered mode, and the positioning columns are meshed with the pressed parts on the diaphragms.
As a further description of the above technical solution:
the part of the transmission shaft located in the end cover is made of corrosion-resistant materials, and one end of the transmission shaft located in the pump body is in transmission connection with the pump shaft through a flange.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses in, constitute the end cover through first pump cover and second pump cover cooperation, and arrange the diaphragm between first pump cover and second pump cover, be convenient for installation and the change of diaphragm, two compression chamber are also cut apart into with the end cover to the diaphragm simultaneously, when diaphragm reciprocating motion, feed liquor pipe and drain pipe on first pump cover and the second pump cover are located, go on in turn, realize continuous pump sending, work efficiency is higher for driven negative pressure pump, the diaphragm is cut apart into two independent cavities with the inside space of end cover simultaneously, consequently, can accomplish the pump sending of two kinds of different materials through a negative pressure pump, thereby practice thrift equipment cost.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the first pump cover of the present invention.
In the figure: 1. an end cap; 2. a first pump cover; 3. a second pump cover; 4. a liquid inlet pipe; 5. a liquid outlet pipe; 6. pressing a plate circularly; 7. a diaphragm; 8. a drive shaft; 9. a pump body; 10. a seal assembly; 11. a movable cavity; 12. a spherical piston; 13. an annular bead; 14. a positioning column; 15. and a pump shaft.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides an embodiment: a negative pressure pump comprises an end cover 1, wherein the end cover 1 is composed of a first pump cover 2 and a second pump cover 3, the first pump cover 2 and the second pump cover 3 are fixedly connected through bolts, a liquid inlet pipe 4 and a liquid outlet pipe 5 are correspondingly arranged on the first pump cover 2 and the second pump cover 3, annular pressing plates 6 with L-shaped cross sections are welded on the inner sides of the opposite ends of the first pump cover 2 and the second pump cover 3, a diaphragm 7 is pressed between the annular pressing plates 6, the middle part of the diaphragm 7 is fixedly connected with one end of a transmission shaft 8, the side end of the second pump cover 3 is connected with a pump body 9 through bolts, the other end of the transmission shaft 8 penetrates through the second pump cover 3 and extends into the pump body 9, a sealing assembly 10 is sleeved at the matching position of the transmission shaft 8 between the second pump cover 3 and the pump body 9, and the reciprocating motion of the diaphragm 7 can work in two compression chambers, so that the same material, two different materials may also be pumped.
Specifically, as shown in fig. 1, the liquid inlet pipe 4 and the liquid outlet pipe 5 on the first pump cover 2 and the second pump cover 3 are arranged in a staggered manner, the liquid inlet pipe 4 and the liquid outlet pipe 5 are both provided with movable channels 11 inside, the inner diameter of each movable channel 11 is larger than that of each liquid inlet pipe 4 and that of each liquid outlet pipe 5, and the movable channels 11 are provided with spherical pistons 12, so that the spherical pistons 12 can move to the inner end portions of the movable channels 11 along with the flowing change of liquid, the pipelines are closed, the spherical pistons 12 can also be located in the middle of the movable channels 11, and the pipelines form a passage.
Specifically, as shown in fig. 1, the edge of the ring pressing plate 6 close to the diaphragm 7 is of a rounded structure, the ring pressing strip 13 is embedded in the opposite side of the ring pressing plate 6, and the ring pressing strip 13 is used for fully contacting the diaphragm 7 after the first pump cover 2 and the second pump cover 3 are locked, so that the sealing performance is improved on one hand, and the auxiliary fixing function is conveniently realized on the other hand.
Specifically, as shown in fig. 1, a plurality of positioning columns 14 are uniformly distributed on the opposite side of the annular pressing plate 6, the positioning columns 14 located on the two annular pressing plates 6 are arranged in a staggered manner, the positioning columns 14 are engaged with the pressed part on the diaphragm 7, and the diaphragm 7 is completely fixed through the positioning columns 14.
Specifically, as shown in fig. 1, the part of the transmission shaft 8 located in the end cover 1 is made of corrosion-resistant materials, and one end of the transmission shaft 8 located in the pump body 9 is in transmission connection with the pump shaft 15 through a flange, so that transportation of different materials can be realized, and when one material is conveyed alone, the pumping power is higher.
The working principle is as follows: when the pump is used, the pump shaft 15 drives the transmission shaft 8 to move, the transmission shaft 8 acts on the diaphragm 7 to enable the diaphragm 7 to reciprocate, when the diaphragm 7 moves towards the inside of the second pump cover 3, the pressure intensity inside the first pump cover 2 is reduced, and at the moment, the spherical piston 12 on the corresponding liquid inlet pipe 4 moves to the middle part of the movable cavity channel 11, so that liquid enters a compression cavity formed by the first pump cover 2 through the liquid inlet pipe 4, meanwhile, the pressure is increased due to the compression of the inner volume of the second pump cover 3, and the liquid is pumped out through the corresponding liquid outlet pipe 5; when the diaphragm 7 moves towards the inside of the first pump cover 2, the pressure inside the second pump cover 3 is reduced, and the spherical piston 12 on the corresponding liquid inlet pipe 4 moves to the middle part of the movable cavity 11, so that liquid enters the compression cavity formed by the second pump cover 3 through the liquid inlet pipe 4, the pressure is increased due to the compression of the inner volume of the first pump cover 2, and the liquid is pumped out through the corresponding liquid outlet pipe 5, and continuous pumping is realized.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a negative pressure pump, includes end cover (1), its characterized in that, end cover (1) comprises first pump cover (2) and second pump cover (3), first pump cover (2) and second pump cover (3) are fixed through bolted connection, and all are provided with corresponding feed liquor pipe (4) and drain pipe (5) on first pump cover (2) and second pump cover (3), the ring clamp plate (6) of L shape cross section have all been welded to first pump cover (2) and second pump cover (3) relative one end inboard, the pressfitting has diaphragm (7) between ring clamp plate (6), the middle part of diaphragm (7) is connected fixedly with the one end of transmission shaft (8), the side bolted connection of second pump cover (3) has pump body (9), the other end of transmission shaft (8) passes second pump cover (3) and extends to the inside of pump body (9), the cooperation department cover that transmission shaft (8) are located second pump cover (3) and pump body (9) is equipped with seal assembly (10) ).
2. The negative pressure pump of claim 1, wherein the liquid inlet pipes (4) and the liquid outlet pipes (5) on the first pump cover (2) and the second pump cover (3) are arranged in a staggered manner, the liquid inlet pipes (4) and the liquid outlet pipes (5) are both provided with movable channels (11) inside, the inner diameter of each movable channel (11) is larger than that of each liquid inlet pipe (4) and each liquid outlet pipe (5), and the movable channels (11) are provided with spherical pistons (12).
3. The negative pressure pump as claimed in claim 1, characterized in that the edge of the ring-pressing plate (6) close to the diaphragm (7) is of a rounded structure, and the opposite sides of the ring-pressing plate (6) are embedded with ring-shaped pressing strips (13).
4. The negative pressure pump according to claim 1, wherein a plurality of positioning columns (14) are uniformly distributed on the opposite side of the annular pressing plate (6), the positioning columns (14) on the two annular pressing plates (6) are arranged in a staggered manner, and the positioning columns (14) are engaged with the pressed part on the diaphragm (7).
5. The negative pressure pump according to claim 1, characterized in that the part of the transmission shaft (8) located in the end cover (1) is made of corrosion-resistant material, and one end of the transmission shaft (8) located in the pump body (9) is in transmission connection with the pump shaft (15) through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921181036.9U CN210265085U (en) | 2019-07-25 | 2019-07-25 | Negative pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921181036.9U CN210265085U (en) | 2019-07-25 | 2019-07-25 | Negative pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265085U true CN210265085U (en) | 2020-04-07 |
Family
ID=70014211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921181036.9U Active CN210265085U (en) | 2019-07-25 | 2019-07-25 | Negative pressure pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210265085U (en) |
-
2019
- 2019-07-25 CN CN201921181036.9U patent/CN210265085U/en active Active
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