CN202402275U

CN202402275U - Pump sealing seat

Info

Publication number: CN202402275U
Application number: CN2011205713632U
Authority: CN
Inventors: 史晨星
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-08-29
Anticipated expiration: 2021-12-31

Abstract

The utility model discloses a pump sealing seat, which comprises a metal frame provided with a shaft hole. A liquid storage tank is arranged in the circumferential direction of the hole wall of the shaft hole, and at least one backflow hole communicated with the liquid storage tank is arranged on the metal frame. The pump sealing seat aims at preventing liquid in a plunger pump from leaking from the matching position of the sealing seat and a plunger and protecting an oil tank from water.

Description

Pump is used sealing seat

Technical field

The utility model relates to a kind of pump and uses sealing seat.

Background technique

Plunger pump is a kind of small flow high-pressure service pump, is widely used in many occasions such as cleaning, pesticide spraying, the conveying of lathe working solution.Because the hydraulic pressure in the plunger pump is very high, so also very high to the sealing requirements of pump.

Plunger pump relies on plunger to-and-fro motion in cylinder body, the volume of seal operation cavity volume is changed realize water flow jet.Between the plunger and the pump housing sealing seat is installed; The relative sealing seat of plunger is done to-and-fro motion at a high speed during work, so be difficult to avoid plunger can take the fitting surface that a part of water gets into plunger and sealing seat out of, overflows outside the pump housing through this fitting surface again; Thereby water body seepage phenomenon takes place, even flow into fuel tank.

In addition, the existing employed sealing seat of plunger pump all is the metallic seal seat, and the metallic seal seat directly contacts with plunger; The high tenacity friction can take place in the two when work; Can produce wearing and tearing inevitably, thereby have a strong impact on the working life of plunger and sealing seat, reduce sealing effect.

And; Gap between metallic seal seat and plunger can not be too little; So the guidance quality of metallic seal seat is relatively poor, can not eliminate the impact that crankshaft & connecting brings, the motion of plunger and high pressure water envelope surface of contact is played pendulum; Thereby also influenced the working life of high pressure water seal, reduced sealing effect.

Summary of the invention

The utility model purpose is: to the problems referred to above, provide a kind of pump to use sealing seat, be intended to avoid the interior liquid of plunger pump to leak out from the cooperation place of sealing seat and plunger.

The technological scheme of the utility model is: a kind of pump is used sealing seat; Comprise metal frame; Establish an axis hole on this metal frame, the hole wall of said axis hole is established a liquid storage tank in circumferencial direction, and on metal frame, offers the return port that at least one is connected with said liquid storage tank.

Said return port is preferably three.

Be inlaid with the lining that macromolecular material is processed in the said axis hole.

Said macromolecular material is preferably teflon.

Establish a step in the said axis hole, said lining is embedded in the macropore of this step one side, and the thickness of lining is identical with the height of step.

The fitting surface of said metal frame and high pressure water seal is positioned at the end away from lining, and end face is provided with all V-shaped grooves.

The beneficial effect of the utility model is:

1, the utility model is provided with a liquid storage tank at the hole wall of axis hole, and on metal frame, offers the return port that is communicated with liquid storage tank.Liquid that plunger is taken out of during through the fitting surface of plunger upper seal support liquid can get into this liquid storage tank, the liquid in the liquid storage tank can be back in the pump housing through return port again then, thereby has avoided the generation of fluid seepage phenomenon in the pump effectively.

2, when plunger pump was worked, plunger was done the high speed to-and-fro motion, the lining frictional heat of macromolecule material; Begin to expand, soften and be in the high elasticity state; In certain temperature range, tend towards stability gradually, make the lining of macromolecular material harder under the normal temperature become softness and high resilience, the lining endoporus shrinks simultaneously; Be the elasticity interference fit this moment between lining and the plunger, thereby play the better seal effect.

3, the lining of the utility model adopts macromolecular material to process, and utilizes low, the wear-resisting characteristics of macromolecular material friction factor, greatly reduces the wearing and tearing of plunger and sealing seat, has improved benefiting from the life-span of plunger and sealing seat, has also improved sealing life simultaneously.

4, because lining and plunger are the zero clearance; So steering capability is good; The lining that adds macromolecular material has superior shock absorption, thereby has eliminated the impact that the curve linkage mechanism brings, and makes the motion of plunger more stable than conventional construction; Plunger and the motion of high pressure water envelope surface of contact keep stable, thereby have improved sealability.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the utility model embodiment's a stereogram;

Fig. 2 is the utility model embodiment's a plan view;

Fig. 3 is that the A-A of Fig. 2 is to sectional view;

Fig. 4 is that the B-B of Fig. 3 is to sectional view;

Wherein: 1-metal frame, 2-axis hole, 3-liquid storage tank, 4-return port, 5-lining, 6-step, 7-V shape groove.

Embodiment

Like Fig. 1 ~ shown in Figure 4; The pump of present embodiment comprises metal frame 1 with sealing seat; This metal frame is provided with an axis hole 2; The hole wall of this axis hole 2 is established a liquid storage tank 3 in circumferencial direction, on metal frame 1, offers the return port 4 (as shown in Figure 4, return port is extended to the surface of metal frame by the cell wall of liquid storage tank) that at least one (this example is three) is connected with liquid storage tank 3 simultaneously.

During concrete the application, this sealing seat is contained in the Plunger pump body, and the plunger of plunger pump is through in the axis hole of metal frame 1 and is reciprocating.Plunger can be taken the fitting surface (surface of contact) that a spot of liquid (being generally water) gets into plunger and sealing seat out of in reciprocating process; Because liquid is influenced by self gravitation; The liquid of taking out of can preferentially get in the liquid storage tank 3; Be back in the pump housing by return port 4 again, thereby avoided the interior liquid of pump to leak out effectively from the cooperation place of sealing seat and plunger.

In addition; Like Fig. 1 ~ shown in Figure 4, this example is established a step 6 in axis hole 2, inlays lining 5 that a macromolecular material processes in the macropore of these step 6 one sides (for practicing thrift cost; Said macromolecular material is generally selected teflon for use), and the thickness of lining 5 is identical with the height of step 6.Metal frame 1 is positioned at the end away from lining 5 with the fitting surface of high pressure water seal, and metal frame 1 is provided with all V-shaped grooves 7 with the end face of that end that cooperates of high pressure water seal.

When this sealing seat assembled on plunger pump, V-shaped groove 7 was sealed and matched with the high pressure water seal; One end of return port 4 is communicated to the cell wall of liquid storage tank 3, and the other end is communicated to the pump housing and passes to plunger pump water inlet place by corresponding flow channel And should guarantee as far as possible that the position of three return ports 4 is under the sealing seat during assembling, under action of gravity so that the liquid in the liquid storage tank 3 flows away from return port.

When plunger pump was worked, plunger was done the high speed to-and-fro motion, the lining frictional heat of macromolecule material; Begin to expand, soften and be in the high elasticity state; In certain temperature range, tend towards stability gradually, make the lining of macromolecule material harder under the normal temperature become softness and high resilience, the lining endoporus shrinks simultaneously; Be the elasticity interference fit this moment between lining and the plunger, thereby play the better seal effect.The lining 5 of this sealing seat adopts macromolecule material to process, and utilizes low, the wear-resisting characteristics of macromolecule material friction factor, greatly reduces the wearing and tearing of plunger and sealing seat, has improved benefiting from the life-span of plunger and sealing seat, has also improved sealing life simultaneously.Because lining 5 is the zero clearance with plunger; So steering capability is good; The lining 5 that adds macromolecule material has superior shock absorption, thereby has eliminated the impact that the curve linkage mechanism brings, and makes the motion of plunger more stable than conventional construction; Plunger and the motion of high pressure water envelope surface of contact keep stable, thereby have improved sealability.

Certainly, the foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is the content that lets the people can understand the utility model and implements according to this, can not limit the protection domain of the utility model with this.All equivalent transformation or modifications of doing according to the spirit of the utility model main technical schemes all should be encompassed within the protection domain of the utility model.

Claims

1. a pump is used sealing seat; Comprise metal frame (1); Establish an axis hole (2) on this metal frame; It is characterized in that: the hole wall of said axis hole (2) is established a liquid storage tank (3) in circumferencial direction, and on metal frame (1), offers the return port (4) that at least one is connected with said liquid storage tank (3).

2. pump according to claim 1 is used sealing seat, it is characterized in that: said return port (4) has three.

3. pump according to claim 1 is used sealing seat, it is characterized in that: be inlaid with the lining (5) that macromolecular material is processed in the said axis hole (2).

4. pump according to claim 3 is used sealing seat, it is characterized in that: said macromolecular material is a teflon.

5. pump according to claim 3 is used sealing seat, it is characterized in that: establish a step (6) in the said axis hole (2), said lining (5) is embedded in the macropore of this step one side, and the thickness of lining (5) is identical with the height of step (6).

6. use sealing seat according to arbitrary described pump in the claim 1 to 5, it is characterized in that: said metal frame (1) is positioned at the end away from lining (5) with the fitting surface of high pressure water seal, and end face is provided with all V-shaped grooves (7).