CN201461522U - Mechanical seal device of a mortar pump - Google Patents

Abstract

The utility model discloses a mechanical sealing device for a mortar pump, which comprises a pump shaft, a set of movable ring assemblies and stationary ring assemblies assembled on the pump shaft, as well as water movable rings sleeved outside the stationary ring assemblies, wherein the movable ring assemblies comprises movable ring bases (1) and movable rings (4) connected through positioning pins (2); the spaces between the movable rings (4) and the movable ring bases (1) are sealed by using O-shaped seal rings V (3); the movable ring assemblies are in close fit with the stationary ring assemblies through springs. Because the mechanical seal of the utility model adopts transmission pins to connect the water movable rings with stationary ring bases, the manufacture cost is low, and the sealing effect is good. The upper ends of the water movable rings adopt abrasion resistant alloy, so that the sealing device has the advantages of strong abrasion resistance and long service life, and is particularly suitable for delivering liquids with particles on a pressure filter.

Description

A kind of mechanical seal device of mortar pump

Technical field

The utility model relates to a kind of mortar feedway, relates in particular to the mechanical seal device on a kind of mortar pump pump shaft.

Background technique

The mortar pump of domestic production at present great majority in the design of axle envelope adopt filler or conventional machinery sealing, packing seal seriously is eliminated gradually owing to its leakage, and mechanical seal is with its good airproof performance, stable performance, leakage rate is few, and friction horsepower is low, and life cycle is long, replaced packing seal etc. good characteristic, be applied and promote in many industries.But when slurry suspension material more than conveying has particle 70 orders and mortar, common mechanical seal device then can be because of the corrosion or the obstruction of factor such as fiber in the viscosity of medium or the medium, often make the wearing and tearing of hydrodynamic(al) ring, cause its sealing to reduce, the air horsepower loss is big, axially reveal seriously, maintenance is frequent, changes spare part expense height.

The model utility content

In order to solve the problem that above-mentioned technology exists, the utility model purpose is to overcome the deficiencies in the prior art, provides a kind of wear-resisting property good, and sealing favorable mechanical seal arrangement is to prolong the working life of mortar pump.

For achieving the above object, the utility model provides a kind of mechanical seal device of mortar pump, its technological scheme is: the hydrodynamic(al) ring that it comprises pump shaft, is assembled in cover moving ring assembly and the static components of one on the pump shaft and is set in the static components outside, it is characterized by: moving ring assembly comprises rotating seat (1), and, between rotating ring (4) and rotating seat (1), seal with O RunddichtringO V (3) by the rotating ring (4) that locating stud (2) connects; Static components comprises stationary ring (5), places stationary seat (15), spring (16), the spring seat (17) of stationary ring (5) the other end successively, and embedding skeleton oil sealing (20) near a side of pump shaft at spring seat (17), spring seat (16) places in the machine envelope box (19) side by side with skeleton oil sealing (20).Between stationary ring (5), stationary seat (15) and machine envelope box (14), embed the hydrodynamic(al) ring, each is fixing with itself and stationary seat (5) with a driving pin (21) in hydrodynamic(al) ring both sides, with a hydrodynamic(al) ring-shaped pressuring plate (10) the hydrodynamic(al) ring is fixed in the machine envelope box (19), hydrodynamic(al) ring-shaped pressuring plate (10) is fixing with screw (11) with machine envelope box (19).

Described hydrodynamic(al) ring is made up of two-part, be that top is divided into the working life that abrasion resistance alloy material thing piece (7) can increase seal arrangement, the thing piece (13) that the bottom is divided into bronze material or other softwood matter can make hydrodynamic(al) ring and stationary seat (15) be linked to be an integral body by driving pin (21), make its sealability better, the two adopts the transition stationary fit to be connected as a single entity.

Each part of described static components all adopts the O RunddichtringO to seal.

Beneficial effect

The utility model compared with prior art has the following advantages and positive effect.

1, because the utility model mechanical seal adopts driving pin that the hydrodynamic(al) ring is connected with stationary seat, its low cost of manufacture, good sealing effect guarantees not intake.Abrasion resistance alloy is adopted in hydrodynamic(al) ring upper end, and its wear resistance is strong, and long service life is specially adapted to carry the liquid that has particle at pressure filter.

2, be three times of the conventional machinery seal arrangement anti-leak service time of the utility model gland seal device, thereby realized the needs that environment protection type is produced.

Description of drawings

Fig. 1 is the structural representation that partly cuts open of the present utility model

Marginal data

1, rotating seat 2, locating stud 3, O RunddichtringO

4, rotating ring 5, stationary ring 6, O RunddichtringO

7, hydrodynamic(al) ring 8, rubber pad 9, O RunddichtringO

10, hydrodynamic(al) ring-shaped pressuring plate 11, screw 12, O RunddichtringO

13, hydrodynamic(al) ring 14, machine envelope box 15, stationary seat

16, spring 17, spring seat 18, O RunddichtringO

19, machine envelope lid 20, skeleton oil sealing 21, driving pin

Embodiment

Embodiment: as shown in Figure 1, the hydrodynamic(al) ring that the utility model comprises pump shaft, is assembled in cover moving ring assembly and the static components of one on the pump shaft and is set in the static components outside, the hydrodynamic(al) ring is fixed on the interior rear plate of machine envelope box (19) with screw.Described moving ring assembly comprises rotating seat (1), and by the rotating ring (4) that locating stud (2) connects, seals with O RunddichtringO (3) between rotating ring (4) and rotating seat (1).Described static components comprises stationary ring (5), places stationary seat (15), spring (16), the spring seat (17) of stationary ring (5) the other end successively, and embedding skeleton oil sealing (20) near a side of pump shaft at spring seat (17), spring seat (16) places in the machine envelope box (19) side by side with skeleton oil sealing (20).Seal (18) with the O RunddichtringO between spring seat (16) and the machine envelope box (19).

Between stationary ring (5), stationary seat (15) and machine envelope box (14), embed the hydrodynamic(al) ring, each is fixing with itself and stationary seat (5) with a driving pin (21) in hydrodynamic(al) ring both sides, with a hydrodynamic(al) ring-shaped pressuring plate (10) the hydrodynamic(al) ring is fixed in the machine envelope box (19), hydrodynamic(al) ring-shaped pressuring plate (10) is fixing with screw (11) with machine envelope box (19).On hydrodynamic(al) ring and hydrodynamic(al) ring-shaped pressuring plate (10), be inserted in rubber pad (8), O RunddichtringO (7) successively.Hydrodynamic(al) ring and rotating ring (4), machine envelope box (20) are used O RunddichtringO (8) and O RunddichtringO (12) sealing respectively.

Described hydrodynamic(al) ring is made up of two-part, be that top is divided into the working life that abrasion resistance alloy material thing piece (7) can increase seal arrangement, the thing piece (13) that the bottom is divided into bronze material or other softwood matter can make hydrodynamic(al) ring and stationary seat (15) be linked to be an integral body by driving pin (21), make its sealability better, the two adopts the transition stationary fit to be connected as a single entity.

Claims (4)

1. A mechanical seal device for a mortar pump, which includes a pump shaft, a set of moving ring assembly and static ring assembly assembled on the pump shaft, and a hydrodynamic ring set on the outside of the static ring assembly, characterized in that: the moving ring assembly Including the moving ring seat (1), and the moving ring (4) connected by the positioning pin (2), the O-ring V (3) is used to seal the space between the moving ring (4) and the moving ring seat (1); The ring assembly includes a static ring (5), a static ring seat (15) placed at the other end of the static ring (5), a spring (16), a spring seat (17), and a spring seat (17) on the side close to the pump shaft. Embed the skeleton type oil seal (20), the spring seat (16) and the skeleton type oil seal (20) are placed side by side in the machine seal box (19). 2. The mechanical seal device of a mortar pump according to claim 1, characterized in that: a hydrodynamic ring is embedded between the static ring (5), the static ring seat (15) and the mechanical seal box (14), and the water A drive pin (21) is used on both sides of the moving ring to fix it to the static ring seat (5), and a hydrodynamic ring pressing plate (10) is used to fix the hydrodynamic ring in the machine seal box (19). (10) is fixed with machine seal box (19) with screw (11). 3. The mechanical seal device of a mortar pump according to claim 2, characterized in that: the hydrodynamic ring is composed of two parts, that is, the upper part is a wear-resistant alloy material block (7) and the lower part is a The block (13) of bronze material or other soft materials, the two are connected as a whole by transitional static fit. 4. A mechanical seal device for a mortar pump according to claim 1, characterized in that: each part of the static ring assembly is sealed with an O-ring.

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