CN2469224Y - Composite sealing type mud pump - Google Patents

Abstract

The utility model provides a combined type seal mortar pump. An oil storage chamber is provided in the pump body seal shell, and a static seal component composed by an inner sleeve, an oil seal, a spring, a static ring body and a dynamic ring body is arranged on an axle sleeve connected in the pump seal shell, and a dynamic seal component composed by a smooth centrifugal wheel and a damping wheel is connected between the axle sleeve and an impeller. The device has the advantages of novel structure, rigorous seal, compact coordination, resisting abrasion, preventing cavitation, durable service and convenient matching loading and usage, which is not only suitable for the oil exploration industry transportation drilling liquid, but also suitable for the coal preparation industry and the mining industry, etc. The device is a novel centrifugal mortar pump.

Description

The mortar pump of combined labyrinth and carbon gland

The utility model relates to a kind of pump, carries the centrifugal sand stock pump of drilling fluid in particular for petroleum production.

In known technology, existing application is in the centrifugal sand stock pump of petroleum production conveying drilling fluid, mainly the spiral centrifugal sand stock pump of being made up of the pump housing, axle sleeve, black box and impeller.But because the black box of existing sand pump is to adopt motive sealing of hard end face seal ring type and flyball formula parking sealer to be combined into, because of seal ring is difficult to lubricate when turn on pump and the termination of pumping, easily produce dry friction and damage, working life is low, and in the pump operation process, motive sealing easily sucks air again and causes cavitation erosion, makes troubles to use.

The purpose of the utility model provides a kind of improved mortar pump, makes its novel structure, tight, wear-resistant, the anti-cavitation erosion of sealing, operation period length, equipped easy to use.

For achieving the above object, the technological scheme that the utility model is taked is: the pump housing can of accumulator in design is adopted and is shaped on, the sealing of pump adopts static seal and dynamic sealing assembly to form, the static seal assembly is by on the axle sleeve that cover, built-in oil sealing, spring, stationary ring body and rotating ring load that body is formed are connected in pump housing can in the sealing, dynamic sealing assembly is formed folder by smooth centrifugal wheel and damping wheel and is connected between axle sleeve and the impeller, damping wheel is connected on the wheel shaft of impeller, organizes to be linked to be to be mortar pump quiet, the motive sealing combined labyrinth and carbon gland.

The smooth centrifugal wheel of dynamic sealing assembly is shaped on shade and takes turns the centrifugal wheel that body side surface is shaped on several pieces uniform semi-open type radial blades outside adopting wheel body in the utility model, centrifugal wheel is connecting axle sleeve, its footpath blade and wheel limit shade can stop air to suck the cavitation erosion that causes effectively, reduce power consumpiton; Damping wheel is that a side of wheel body is shaped on that several pieces uniform radial blades touch the smooth centrifugal wheel of ining succession, the another side is shaped on helical groove and is connecting the impeller back blade, can play hypotensive effect, spiral chute can also play the sediment outflow effect, have characteristics such as pressure drop is stablized, anti-suck loses, wear-resistant, in the pump operation process, motive sealing produces oppositely and presses, and leak fluid is pushed back closed chamber reach sealing effect.

The stationary ring body of the utility model static seal assembly and spring are fused by the interior cover of spiral pin and sealing, and rotating ring body internal key is connected in axle sleeve, the end face fitted seal that consists of.It is to prevent to leak by the incompatible shutoff fluid of the close-fitting of dynamic and static ring body end face, plays sealing lubricating oil, air-isolation effect again when pump turns round, and pump plays the effect of sealing hydrostatic fluid when static.

Because the utility model has adopted the mortar pump of being organized the combined labyrinth and carbon gland that is linked to be by static seal assembly and dynamic sealing assembly two-part.Compared with prior art, the utlity model has novel structure, reasonable in design, especially the static seal assembly is the mechanical seal that is under the oil immersion state work, sealing is tight, cooperation is compact, wear-resistant, anti-cavitation erosion, durable in use, advantage such as equipped and easy to use, be not only applicable to oil exploration industry and carry drilling fluid, also being applicable to coal separation industry, mining industry etc., is a kind of novel centrifugal sand stock pump.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the sectional view of the utility model embodiment concrete structure.

Fig. 2 is the left view of smooth centrifugal wheel among Fig. 1.

Fig. 3 be among Fig. 1 damping wheel dwindle left view.

Fig. 4 be among Fig. 1 damping wheel dwindle right elevation.

Fig. 5 is the structural drawing of the utility model middle pump body bearing support.

Embodiment as shown in Figure 1, the utility model comprises: the pump housing (2), impeller (12), axle sleeve (1) and static seal assembly, dynamic sealing assembly, the pump housing (2) is shaped on interior accumulator in its can body, add oil storage cup thereby saved.The static seal assembly is made up of on the axle sleeve (1) that load connected in the pump housing (2) can cover (5), built-in oil sealing (3), spring (4), stationary ring body (7) and rotating ring body (8) in the sealing, rotating ring body (8) is connected in axle sleeve (1) by key (9), stationary ring body (7) is connected with cover (5) in the sealing by spiral pin (6) with spring (4), the built-in oil sealing (3) of setting-in connects the location by the back seat of cover (5) in the sealing in the pump housing can, and interior cover (5) compresses the location by spring (4); Dynamic sealing assembly is formed folder by smooth centrifugal wheel (10) and damping wheel (11) and is connected between axle sleeve (1) and the impeller (12), and damping wheel (11) is connected in that its side end face is connected with the impeller back blade on the wheel shaft of impeller (12).

Referring to accompanying drawing 2 embodiments, the smooth centrifugal wheel (10) of dynamic sealing assembly is to be shaped on wheel outside shade and to take turns the round wheel body that body side surface is shaped on 8 uniform semi-open type radial blades in the utility model.

Referring to accompanying drawing 3, Fig. 4 embodiment, the damping wheel of the utility model dynamic sealing assembly (11) is that a side of wheel body is shaped on 8 uniform radial blades, blade face cooperates the smooth centrifugal wheel of the company of touching (10), the another side of wheel body is shaped on the logarithm helical groove, and spiral groove face cooperates the back blade of the company's of touching impeller (12).

Referring to accompanying drawing 5, for making overall structure novelty, material-saving practicality, pump housing bearing support of the present utility model (13) is designed to arc limit square body.

Claims (4)

1, a kind of mortar pump of combined labyrinth and carbon gland, it comprises the pump housing, axle sleeve, impeller, black box, it is characterized in that black box is made up of static seal assembly and dynamic sealing assembly, the pump housing is the pump housing (2) of accumulator in being shaped in its can body, the static seal assembly is by cover (5) in the sealing, built-in oil sealing (3), spring (4), stationary ring body (7) and rotating ring body (8) are formed on the axle sleeve (1) that load connected in the pump housing (2) can, and dynamic sealing assembly is formed folder by smooth centrifugal wheel (10) and damping wheel (11) and is connected between axle sleeve (1) and the impeller (12).

2, mortar pump according to claim 1, it is characterized in that the stationary ring body (7) in the static seal assembly is connected with cover (5) in the sealing by spiral pin (6) with spring (4), rotating ring body (8) is connected in axle sleeve (1) by key (9), the built-in oil sealing (3) that is flush-mounted in the pump housing can connects the location by the back seat that overlaps (5) in the sealing, and interior cover (5) compresses the location by spring (4).

3, mortar pump according to claim 1, the smooth centrifugal wheel (10) that it is characterized in that dynamic sealing assembly is to be shaped on the round wheel body that wheel outside shade and wheel body side surface are shaped on uniform semi-open type radial blade, and damping wheel (12) is that a side of wheel body is shaped on uniform radial blade and touches and connect the back blade that smooth centrifugal wheel (10), another side are shaped on helical groove connection impeller (12).

4, mortar pump according to claim 1, the bearing support (13) that it is characterized in that the pump housing (2) is an arc limit square body.

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