CN210769233U

CN210769233U - Diaphragm pump head leak-stopping structure

Info

Publication number: CN210769233U
Application number: CN201921727047.2U
Authority: CN
Inventors: 张效振; 冷才华; 金玲珑
Original assignee: Hangzhou Lefoo Industrial Co ltd
Current assignee: Hangzhou Lefoo Industrial Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-16
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a diaphragm pump head leak-stopping structure. Aim at provides a diaphragm pump head leak stopping structure, effectively reduces the pump body during operation and takes place the possibility of seepage. The utility model aims at completing the leakage stopping structure of the pump head of the diaphragm pump by the following technical scheme, which comprises a fluid chamber, a diaphragm chamber, a sealing ring, a diaphragm and a fluid chamber bracket, wherein the diaphragm chamber, the sealing ring and the diaphragm are arranged in a cavity formed by the fluid chamber and the fluid chamber bracket, the diaphragm chamber is arranged on the top surface of the diaphragm, the diaphragm is provided with a circle of mounting groove, and the sealing ring is arranged in the mounting groove; and a first step used for pressing the sealing ring in the mounting groove is arranged on the fluid chamber.

Description

Diaphragm pump head leak-stopping structure

Technical Field

The utility model belongs to the technical field of the diaphragm booster pump, especially, diaphragm pump head leak-stopping structure.

Background

The diaphragm booster pump of one of the core component on current purifier, this booster pump mainly adopt the diaphragm technique, because the diaphragm material has good physical property and chemical resistance, but has the not enough defect of plastics again, and the elastic coefficient is little, and the shrinkage factor is big behind the contact water, and the booster pump directly adopts the diaphragm to seal, uses a period after, because the diaphragm shrink produces the clearance, and the pump leads to the seepage phenomenon at the long-time during operation of high pressure.

Disclosure of Invention

An object of the utility model is to overcome the problem that above-mentioned exists, provide a diaphragm pump head leak-stopping structure, effectively reduce the possibility that the seepage took place for pump body during operation.

The purpose of the utility model is achieved by the following technical proposal,

the diaphragm pump head leakage-stopping structure comprises a fluid chamber, a diaphragm chamber, a sealing ring, a diaphragm and a fluid chamber support, wherein the diaphragm chamber, the sealing ring and the diaphragm are arranged in a cavity formed by the fluid chamber and the fluid chamber support; and a first step used for pressing the sealing ring in the mounting groove is arranged on the fluid chamber. The sealing ring is used as a sealing medium and is matched with the diaphragm with a certain elastic coefficient, so that the sealing performance is improved, and the service lives of the sealing ring and the diaphragm can be prolonged.

Preferably, a circle of convex strips are arranged on the diaphragm, and a second step matched with the convex strips is arranged on the fluid chamber. After the installation is finished, the second step is pressed on the convex strip, two-stage sealing is formed between the fluid chamber and the diaphragm, and the sealing reliability is greatly enhanced.

Preferably, the fluid chamber compresses the diaphragm between the fluid chamber and the fluid chamber support by the first step and the second step.

Preferably, the mounting groove is located outside the protruding strip.

Preferably, the mounting groove is provided with an inclined wall surface, and in the process that the first step presses the sealing ring, the inclined wall surface is utilized to convert the pressing force in the vertical direction into a horizontal acting force to be applied to the sealing ring, so that a better leakage stopping effect is achieved.

Preferably, the first step is provided with a first raised sealing rib, and the first sealing rib is compressed and embedded into the sealing ring after installation, so that the sealing effect can be further improved.

Preferably, the second step is provided with a raised second sealing rib, and the second sealing rib is compressed and embedded into the raised line after installation, so that the sealing effect can be further improved.

Preferably, the bottom surface of the diaphragm is provided with a circle of positioning ribs which are embedded in the positioning grooves on the fluid chamber support, so that the mounting is convenient.

Compared with the prior art, the utility model have following advantage and effect:

1. the utility model discloses set up the mounting groove on the diaphragm, and place the sealing washer, be equipped with simultaneously on the fluid room be used for with the sealing washer compresses tightly the first step in the mounting groove, utilize the sealing washer as sealing medium, the coefficient of elasticity is big, no deflection, and the cooperation has the diaphragm of certain coefficient of elasticity, sealing performance has been improved on the one hand, can bear higher operating pressure, the longer time leakproofness, reduce the possibility that the seepage took place for the diaphragm booster pump at the long-time during operation of high pressure, this sealing washer of on the other hand adopts the silica gel material, because silica gel is under different ambient temperature, certain pliability has, resilience and surface hardness, and mechanical properties does not have obvious change, it is little to have compensatied the coefficient of elasticity of diaphragm, the big defect of shrinkage factor behind the contact water, thereby the life of extension sealing.

2. The second step compresses tightly on the sand grip, and first step compresses tightly the sealing washer in the mounting groove simultaneously to form two-stage seal between fluid chamber and diaphragm, strengthened sealed reliability greatly.

Drawings

Fig. 1 is a schematic diagram of the explosion structure of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is a schematic view of the structure of fig. 3 with the seal ring and diaphragm removed.

Fig. 5 is a schematic view of the structure of the membrane of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, a pump head leakage stopping structure of a diaphragm pump according to the present embodiment includes a fluid chamber 1, a diaphragm chamber 2, a sealing ring 3, a diaphragm 4, and a fluid chamber bracket 5; the diaphragm chamber 2, the sealing ring 3 and the diaphragm 4 are arranged in a cavity formed by the fluid chamber 1 and the fluid chamber bracket 5, wherein the diaphragm chamber 2 is arranged on the top surface of the diaphragm 4 and is positioned between the fluid chamber 1 and the diaphragm 4; the diaphragm 4 is respectively provided with a circle of mounting grooves 41 and a circle of convex strips 43 (in this example, the mounting grooves are positioned at the outer sides of the convex strips), the sealing ring 3 is arranged in the mounting grooves, and the fluid chamber 1 is respectively provided with a first step 11 and a second step 12; after the installation is finished, the first step 11 presses the sealing ring 3 into the installation groove 41, the second step 12 presses the convex strip 43, two-stage sealing is formed between the fluid chamber 1 and the diaphragm 4, and the sealing reliability is greatly enhanced. In addition, because the sealing ring 3 is used as a sealing medium, the elastic coefficient is large, no deformation is caused, and the diaphragm 4 with a certain elastic coefficient is matched, on one hand, the sealing performance is improved, higher working pressure can be borne, the sealing performance is longer, the possibility of leakage of the diaphragm booster pump during long-time working under high pressure is reduced, and on the other hand, the service lives of the sealing ring 3 and the diaphragm 4 can also be prolonged.

The fluid chamber 1 compresses the membrane 4 between the fluid chamber 1 and the fluid chamber holder 5 by means of the first step 11 and the second step 12.

As shown in fig. 4, a first raised sealing rib 13 is provided on the first step 11, and a second raised sealing rib 14 is provided on the second step 12. After the installation is accomplished, in the sealed muscle 14 of second compressed tightly and embedding sand grip 43, first sealed muscle 13 compressed tightly and imbeds in the sealing washer 3, and sealing washer 3 receives external force extrusion in-process, fills confined space to with the gap seal between fluid chamber 1 and the diaphragm 4, the pump prevents rivers play at high pressure during operation, thereby effectual improvement diaphragm pump sealing performance prevents that the pump seepage is probably.

As shown in fig. 5, in order to further improve the sealing performance, the mounting groove 41 has an inclined wall surface, and during the process that the first step 11 presses the sealing ring 3, the inclined wall surface is used to convert the pressing force in the vertical direction into a horizontal force to be applied to the sealing ring 3, so as to achieve a better leakage-stopping effect.

The bottom surface of the diaphragm 4 is provided with a circle of positioning ribs 42 which are embedded in the positioning grooves 51 on the fluid chamber bracket 5, so that the installation is convenient.

Claims

1. A diaphragm pump head leak stopping structure, includes fluid chamber (1), diaphragm chamber (2), sealing washer (3), diaphragm (4) and fluid chamber support (5), install in the cavity that fluid chamber (1) and fluid chamber support (5) formed diaphragm chamber (2), sealing washer (3), diaphragm (4), wherein diaphragm chamber (2) is settled on the top surface of diaphragm (4), its characterized in that: a circle of mounting groove (41) is formed in the diaphragm (4), and the sealing ring (3) is arranged in the mounting groove; the fluid chamber (1) is provided with a first step (11) used for pressing the sealing ring (3) in the mounting groove (41).

2. A diaphragm pump head leak stop structure according to claim 1, wherein: be equipped with round sand grip (43) on diaphragm (4), be equipped with on fluid chamber (1) with sand grip (43) matched with second step (12).

3. A diaphragm pump head leak stop structure according to claim 2, wherein: the fluid chamber (1) presses the membrane (4) between the fluid chamber (1) and the fluid chamber support (5) by means of the first step (11) and the second step (12).

4. A diaphragm pump head leak stop structure according to claim 2, wherein: the mounting groove (41) is positioned on the outer side of the convex strip (43).

5. A diaphragm pump head leak stop structure according to claim 1, wherein: the mounting groove (41) has an inclined wall surface.

6. A diaphragm pump head leak stop structure according to claim 1, wherein: and a raised first sealing rib (13) is arranged on the first step (11).

7. A diaphragm pump head leak stop structure according to claim 2, wherein: and a raised second sealing rib (14) is arranged on the second step (12).

8. A diaphragm pump head leak stop structure according to claim 1, wherein: the bottom surface of the diaphragm (4) is provided with a circle of positioning ribs (42) which are embedded into positioning grooves (51) on the fluid chamber support (5).