CN219045455U - Diaphragm pump plate with overpressure backflow safety device - Google Patents
Diaphragm pump plate with overpressure backflow safety device Download PDFInfo
- Publication number
- CN219045455U CN219045455U CN202223509320.9U CN202223509320U CN219045455U CN 219045455 U CN219045455 U CN 219045455U CN 202223509320 U CN202223509320 U CN 202223509320U CN 219045455 U CN219045455 U CN 219045455U
- Authority
- CN
- China
- Prior art keywords
- cavity
- diaphragm
- pump plate
- overpressure
- liquid inlet
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model aims to solve the problem of providing a diaphragm pump plate with an overpressure backflow safety device, wherein the overpressure backflow safety device is designed and installed in the pump plate, occupies small space, is relatively space-saving, is simple and adjustable, and comprises a pump plate body, wherein a liquid inlet cavity and a liquid outlet cavity are formed in the inner side surface of the pump plate body, and a total liquid inlet communicated with the liquid inlet cavity and a total liquid outlet communicated with the liquid outlet cavity are formed in the outer side surface of the pump plate body; a reflux cavity is arranged in the pump plate body, and an overpressure reflux liquid inlet hole communicated with the total liquid outlet and an overpressure reflux liquid outlet hole communicated with the total liquid inlet are arranged on the side wall of the reflux cavity; the back flow cavity is internally provided with a diaphragm, the diaphragm is attached to and seals the overpressure back flow liquid inlet, the upper part in the back flow cavity is provided with an adjusting bolt, and the lower end of the adjusting bolt is pressed on the diaphragm.
Description
Technical Field
The utility model relates to a feeding system of pharmaceutical chemical reaction equipment, in particular to a plunger type diaphragm pump plate, and particularly relates to a diaphragm pump plate with an overpressure backflow safety device.
Background
Diaphragm pumps are a particular form of volumetric pump that rely on the back and forth movement of a diaphragm to change the volume of a working chamber to draw in and expel fluid. As disclosed in the prior art (patent publication No. CN 207437316U), an electric diaphragm pump is provided, wherein a through hole is provided between the water-passing cavity and the pump cavity, and a diaphragm is provided at the position of the water-passing cavity opposite to the through hole. The general diaphragm pump includes the pump body that has feed liquor passageway and drain passageway, and the check valve sets up at pump body feed liquor passageway and drain passageway. In order to ensure the safety of the operating pressure, the pump body is also provided with an overpressure backflow safety device, the overpressure backflow safety device comprises a safety valve, a pressure gauge and a backflow pipeline, the backflow pipeline is connected with the liquid inlet pipeline and shares a liquid inlet hole, when the pressure in the pump head is greater than the set pressure of the safety valve, the safety valve is opened, and liquid in the pump head flows back again from the liquid inlet, so that the aim of pressure relief control and pressure protection of the pump safety is achieved.
The overpressure safety reflux device of the diaphragm pump has the advantages of large volume, large occupied space, incapability of adjusting the set pressure of the safety valve and inconvenient use.
Disclosure of Invention
The utility model aims to solve the problem of providing a diaphragm pump plate with an overpressure backflow safety device, wherein the overpressure backflow safety device is designed and installed in the pump plate, occupies small space, saves space and is simple and adjustable.
The utility model is realized by the following technical scheme:
the diaphragm pump plate with the overpressure backflow safety device comprises a pump plate body, wherein a liquid inlet cavity and a liquid outlet cavity are formed in the inner side surface of the pump plate body, and a total liquid inlet communicated with the liquid inlet cavity and a total liquid outlet communicated with the liquid outlet cavity are formed in the outer side surface of the pump plate body;
a reflux cavity is arranged in the pump plate body, and an overpressure reflux liquid inlet hole communicated with the total liquid outlet and an overpressure reflux liquid outlet hole communicated with the total liquid inlet are arranged on the side wall of the reflux cavity;
the back flow cavity is internally provided with a diaphragm, the diaphragm is attached to and seals the overpressure back flow liquid inlet, the upper part in the back flow cavity is provided with an adjusting bolt, and the lower end of the adjusting bolt is pressed on the diaphragm.
Furthermore, the diaphragm is wedge-shaped, and the diaphragm is made of a tetrafluoro material.
Further, the pump plate body is a stainless steel plate.
Further, positioning holes are formed in the periphery of the pump plate body.
Compared with the prior art, the utility model has the following beneficial effects:
1. when the pressure of the liquid in the pump cavity is overlarge, the liquid in the total liquid outlet presses the diaphragm through the overpressure backflow liquid inlet hole, so that the diaphragm is bent, the liquid enters the backflow cavity, and then enters the total liquid inlet through the overpressure backflow liquid outlet hole, and pressure relief is realized;
the overpressure reflux safety device is designed and arranged in the pump plate, occupies small volume and saves space;
the extrusion strength of the diaphragm can be controlled through the adjusting bolt, so that the opening pressure of the diaphragm is adjusted, the use is more flexible, and the pressure relief is adjustable;
2. the utility model has simple and compact structure, low manufacturing cost and small occupied space, and is suitable for small diaphragm pumps.
Drawings
FIG. 1 is a schematic perspective view of a diaphragm pump plate according to the present utility model;
FIG. 2 is a cross-sectional view of a diaphragm pump plate according to the present utility model;
in the figure: 1. pump plate body, 2, feed liquor chamber, 3, go out the liquid chamber, 4, total inlet, 5, total liquid outlet, 6, backward flow chamber, 7, diaphragm, 8, adjusting bolt, 9, constant head tank, 10, superpressure backward flow feed liquor hole, 11 superpressure backward flow play liquid hole.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the description of the utility model, it should be understood that the terms "front," "rear," "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1-2, this embodiment discloses a diaphragm pump plate with an overpressure backflow safety device, which mainly includes a pump plate body 1 made of stainless steel, a liquid inlet cavity 2 and a liquid outlet cavity 3 which are distributed in a long shape are processed on the inner side surface of the pump plate body 1, the liquid inlet cavity 2 and the liquid outlet cavity 3 are distributed in parallel up and down, and a total liquid inlet 4 communicated with the liquid inlet cavity 2 and a total liquid outlet 5 communicated with the liquid outlet cavity 3 are respectively processed on the outer side surface of the pump plate body 1. A cylindrical backflow cavity 6 is processed between the total liquid inlet 4 and the total liquid outlet 5 in the pump plate body 1, and an overpressure backflow liquid inlet 10 communicated with the total liquid outlet 5 and an overpressure backflow liquid outlet 11 communicated with the total liquid inlet 4 are processed on the side wall of the backflow cavity 6.
A diaphragm 7 with good elasticity is arranged in the reflux cavity 6, the whole diaphragm 7 is wedge-shaped, the diaphragm 7 is made of tetrafluoro material, a positioning groove 9 is processed at the bottom of the reflux cavity 6, and the diaphragm 7 is positioned and assembled in the positioning groove 9. The diaphragm 7 is attached to and seals the overpressure backflow liquid inlet 10, an adjusting bolt 8 is arranged at the upper part in the backflow cavity 6, and the lower end of the adjusting bolt 8 is pressed on the diaphragm 7. When the adjusting bolt 8 is screwed, the diaphragm 7 can be pressed, making the diaphragm 7 less flexible, thereby improving the degree of pressure resistance. For convenient installation, the periphery of the pump plate body 1 is provided with positioning holes.
When the diaphragm pump plate with the overpressure backflow safety device is applied to a diaphragm pump, a valve plate is required to be assembled on the inner side surface of the pump plate body 1, a liquid inlet flow passage and a liquid outlet flow passage which are correspondingly communicated with the liquid inlet cavity 2 and the liquid outlet cavity 3 are formed in the valve plate, one-way valves are assembled on the liquid inlet flow passage and the liquid outlet flow passage, and then the pump plate body 1 and the valve plate are assembled on the pump cavity side of the diaphragm pump together.
The utility model relates to an overpressure backflow safety device of a diaphragm pump plate, which has the following specific working principle:
when the pressure of the liquid in the pump cavity is overlarge, the liquid in the total liquid outlet 5 presses the diaphragm 7 through the overpressure backflow liquid inlet 10 to bend the diaphragm 7, so that the liquid enters the backflow cavity 6 and then enters the total liquid inlet 4 through the overpressure backflow liquid outlet 11 to realize pressure relief; the overpressure reflux safety device is designed and arranged in the pump plate, occupies small volume and saves space.
Claims (4)
1. The diaphragm pump plate with the overpressure backflow safety device is characterized by comprising a pump plate body, wherein a liquid inlet cavity and a liquid outlet cavity are formed in the inner side surface of the pump plate body, and a total liquid inlet communicated with the liquid inlet cavity and a total liquid outlet communicated with the liquid outlet cavity are formed in the outer side surface of the pump plate body;
a reflux cavity is arranged in the pump plate body, and an overpressure reflux liquid inlet hole communicated with the total liquid outlet and an overpressure reflux liquid outlet hole communicated with the total liquid inlet are arranged on the side wall of the reflux cavity;
the back flow cavity is internally provided with a diaphragm, the diaphragm is attached to and seals the overpressure back flow liquid inlet, the upper part in the back flow cavity is provided with an adjusting bolt, and the lower end of the adjusting bolt is pressed on the diaphragm.
2. The diaphragm pump plate of claim 1, wherein the diaphragm is wedge-shaped and the diaphragm is made of a tetrafluoro material.
3. The diaphragm pump plate of claim 2, wherein the pump plate body is a stainless steel plate.
4. A diaphragm pump plate according to any one of claims 1-3, wherein positioning holes are provided around the periphery of the pump plate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223509320.9U CN219045455U (en) | 2022-12-28 | 2022-12-28 | Diaphragm pump plate with overpressure backflow safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223509320.9U CN219045455U (en) | 2022-12-28 | 2022-12-28 | Diaphragm pump plate with overpressure backflow safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219045455U true CN219045455U (en) | 2023-05-19 |
Family
ID=86321356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223509320.9U Active CN219045455U (en) | 2022-12-28 | 2022-12-28 | Diaphragm pump plate with overpressure backflow safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219045455U (en) |
-
2022
- 2022-12-28 CN CN202223509320.9U patent/CN219045455U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219045455U (en) | Diaphragm pump plate with overpressure backflow safety device | |
| CN218991854U (en) | One-way valve assembly of plunger diaphragm pump | |
| CN216951676U (en) | Liquid back pressure valve | |
| CN210317641U (en) | Liquid leakage prevention water pump with double one-way valve structure | |
| CN211461561U (en) | Pipeline component mounting part and pipeline mechanism | |
| CN113803244A (en) | Water pump with water stopping function | |
| CN207378210U (en) | The adjustable check valve of pressure difference | |
| CN116066351A (en) | One-way valve assembly of plunger diaphragm pump | |
| CN219840780U (en) | Peristaltic pump capable of preventing hose from bursting or loosening | |
| CN220539822U (en) | Card subassembly and multichannel peristaltic pump head with adjustable pressure | |
| CN214273902U (en) | Pump head structure of water supply pump | |
| CN219671547U (en) | Eccentric part and water inlet valve of toilet cistern | |
| CN220849966U (en) | Drip-proof diaphragm pump | |
| CN216519817U (en) | Pressure reducing valve assembly and infusion device | |
| CN214616985U (en) | Electric diaphragm pump | |
| CN219866435U (en) | Automatic closed check valve | |
| CN214618038U (en) | Pressure-reducing reflux valve | |
| CN216385838U (en) | Bubble counter | |
| CN218762683U (en) | Gas storage mechanism and gas-liquid mixing device | |
| CN215330274U (en) | Flushing and pressure reducing integrated valve of intelligent closestool | |
| CN219654855U (en) | Miniature electric diaphragm pump | |
| CN219033432U (en) | Drain valve controlled to be opened by water pressure | |
| CN215762074U (en) | Energy-saving proportioning pump | |
| CN212297094U (en) | Threaded plug-in type overflow valve | |
| CN209557221U (en) | A kind of Novel valve seat structure of bias diaphragm fluid pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |