CN201162665Y - Top cover sealing ring of membrane pump - Google Patents

Abstract

The utility model relates to a top cover seal ring of a diaphragm pump which comprises a top cover, a seal ring and a fluid room. The utility model is characterized in that the seal ring is installed on the sinking platform of the pressure relief chamber of the fluid room. The upper part of the seal ring is buckled with the adjustable top cover, forming a radial extrusion seal. The convex rib of the top cover and the upper plane of the seal ring is in interference fit, forming an axial directional seal. The utility model has the beneficial effect that the convex rib of the top cover and the upper plane of the seal ring is in interference fit, forming an axial directional seal; a double-seal structure is used to replace the original single seal structure; the seal performance is improved; and consequently the water leakage phenomenon at the top cover can be prevented.

Description

A kind of top seal circle of diaphragm pump

Technical field

The utility model relates to a kind of top seal circle of diaphragm pump.

Background technique

The top cover of more existing diaphragm pumps and the sealing between the fluid chamber adopt the round section joint ring resiliently deformable to guarantee sealing, because after being subjected to high pressure for a long time, " O " shape figure is prone to plastic deformation and causes seal failure, and fluid chamber's easy moisture absorption under the environment that is subjected to the water logging bubble makes the materials and parts deliquescing, and it is bad that product causes product to leak being subjected to high pressure work the time to be prone to distortion, the situation of pump head inner sealing deficiency.

The model utility content

The purpose of this utility model provides a kind of top seal circle of diaphragm pump,, the deficiency of easily leaking relatively poor with the sealing effect that overcomes existing product.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of top seal circle of diaphragm pump, comprise top cover, seal ring, fluid chamber, described seal ring is packed on the heavy stand of pressure-releasing cavity of fluid chamber, the top of seal ring fastens displaceable roof and forms the lateral extrusion sealing, and the last plane of the convex tendon of described top cover and seal ring produces interference fit and forms axial seal; Described spring housing is connected on the pressure regulator valve, and described fluid chamber inside is provided with pressure-releasing cavity, and valve block is packed in the pressure-releasing cavity of fluid chamber, and pressure regulator valve is buckled on the pressure regulation valve block.

The beneficial effect of the top seal circle of diaphragm pump described in the utility model is: the plane interference fit forms axial seal on convex tendon on the top cover and the seal ring, utilize double seal to substitute original substance sealing configuration, improved sealing, thereby can prevent that leaking of top cover place is bad.

Description of drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is that the top seal circle of the described diaphragm pump of the utility model embodiment decomposes the assembling schematic representation;

Fig. 2 is the structural representation of the top seal circle of the described diaphragm pump of the utility model embodiment;

Fig. 3 is the plan view of the top seal circle of the described diaphragm pump of the utility model embodiment.

Among the figure:

1, top cover; 2, seal ring; 3, spring; 4, pressure regulator valve; 5, valve block; 6, fluid chamber; 7, Steel Skeleton; 8, pressure-releasing cavity.

Embodiment

As Figure 1-3, the top seal circle of the described diaphragm pump of the utility model embodiment, comprise top cover 1, seal ring 2, fluid chamber 6, described seal ring 2 is packed on the heavy stand of pressure-releasing cavity 8 of fluid chamber 6, the top of seal ring 2 fastens displaceable roof 1 and forms the lateral extrusion sealing, the last plane of the convex tendon of described top cover 1 and seal ring 2 produces interference fit and forms axial seal, this structure adopts double seal to replace general original substance sealing to make sealability improve greatly, thereby can prevent that top cover 1 from leaking; Described spring 3 is socketed on the pressure regulator valve 4, and described fluid chamber 6 inside are provided with pressure-releasing cavity 8, and valve block 5 is packed in the pressure-releasing cavity 8 of fluid chamber 6, and pressure regulator valve 4 is buckled on the pressure regulation valve block 5.

Claims (1)

1, a kind of top seal circle of diaphragm pump, comprise top cover, seal ring, fluid chamber, it is characterized in that: described seal ring is packed on the heavy stand of pressure-releasing cavity of fluid chamber, the top of seal ring fastens top cover and forms the lateral extrusion sealing, the last plane interference fit of the convex tendon of described top cover and seal ring and form axial seal.

Images