CN2693992Y

CN2693992Y - Inertial suction valve for carbon dioxide pump

Info

Publication number: CN2693992Y
Application number: CN 200420020571
Authority: CN
Inventors: ***
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-26
Filing date: 2004-02-26
Publication date: 2005-04-20
Anticipated expiration: 2014-02-26

Abstract

The utility model discloses an inertial suction valve for carbon dioxide pump which comprises that a plunger is provided in the cylinder sleeve, a guiding ring and a plunger ring are orderly provided from left to right on the big end of the exterior cylinder face of the plunger. A spacing check ring groove which is filled with a spacing check ring, a large cylindrical hole which is filled with a suction valve and a suction valve seat which is provided with a liquid channel are arranged on the face of the interior cylinder of the big end plunger orderly from left to right. Both sides of the suction valve seat are provided with the other liquid channel which is communicated with the liquid channel, and the end face of the suction valve seat is the sealing surface of the valve seat. The utility model as the suction valve of the carbon dioxide pump has no special purpose valve body, the valve seat has reciprocating motion with the plunger, the valve seat is movable and not stationary, and the valve seat is different from the former stationary valve seat. The inertial valve expertly makes use of the inertial force making the suction valve to switch on or switch off to satisfy the function of the suction valve when the reciprocating pump plunger has reciprocating motion and the inertial force is interchanged. The utility model has convenient operation, compact structure, little resistance and high efficiency.

Description

Inertia Sunction Pump Using For Carbon Dioxide

Affiliated technical field

The utility model relates to reciprocating pump, relates in particular to Inertia Sunction Pump Using For Carbon Dioxide.

Background technique

Two kinds of methods are generally used in the conveying of liquefied gas at low temp pump, supercharging: 1, centrifugal pump generally is applicable to big flow, than low head pressure, than low lift; 2, reciprocating pump is applicable to small flow and middle and high head pressure, high-lift.

Reciprocating pump operated by rotary motion suction valve and expulsion valve, the effect of suction valve sucks liquid in the cylinder body in the piston reciprocating stroke exactly, and this moment, expulsion valve cut out, and in reciprocal compression stroke, the liquid after expulsion valve boosts piston is discharged, at this moment suction valve closure.

Suction valve commonly used and expulsion valve element comprise valve body, flap, spring, guiding, functional element such as spacing.

The valve body system of conventional suction valve is processed by material monolithic.Its effect has four kinds:

(1) provides one and extraneous sealed space.

(2) it is corresponding with flap static valve seat to be set in this space, the corresponding fluid passage of open and close.

(3) in this space, functional element such as flap, spring, snubber are being set.

(4) because valve seat is static, so the size in this space is constant.

The flap of conventional suction valve when adopting cone valve lobe, dull and stereotyped flap, needs mounting spring that elastic force is provided, and when adopting pellet shot from a slingshot, slide pad, provide gravity by deadweight, but its characteristics is unidirectional force.

Summary of the invention

The purpose of this utility model is: a kind of special-purpose Inertia Sunction Pump Using For Carbon Dioxide that sucks valve body that do not have is provided.

In order to achieve the above object, the technical solution adopted in the utility model is to comprise: guide ring, and piston ring, piston, cylinder sleeve, spacing ring washer sucks flap, spacing ring washer groove.Piston is housed in cylinder sleeve, the big end external cylindrical surface of piston is equipped with guide ring and piston ring from left to right successively, the big end inner cylindrical surface of piston has spacing ring washer groove, the dress of adorning spacing ring washer from left to right successively and sucks the big column hole of flap, the suction valve seat that the centre has fluid passage, suck the valve seat both sides and have another fluid passage that is connected with fluid passage, the end face that sucks valve seat is a sealing surface of seat.

Said suction flap is I-shaped, and the first-class branch of suction flap end face of close big end inner cylindrical surface one end of piston has the round liquid passage, and the first-class branch of suction flap end face circumference of the other end has semicircle another fluid passage, and two passages are interconnected.

The utility model is compared with background technique, and the useful effect that has is:

1, compact structure is not provided with suction valve in addition, reduces the volume of pump;

2, reduce suction resistance, improve the efficient of pump,, make to suck the resistance that actual liquid absorption minimizing reduces suction process owing in discharge process, have partially liq to enter fluid cylinder;

3, the open and close active force is two-way, and big or small available piston is annotated numerical control system again;

The utility model is as the suction valve of carbon dioxide pump, do not establish special-purpose valve body, and valve seat is with reciprocating motion of the pistons, astatic, is static different with former valve seat.This inertia valve utilizes reciprocating piston pump when reciprocating, and during the inertial force alternate, the ingenious inertial force that utilizes makes the suction valve switch, satisfies the function of suction valve.The utility model is easy to operate, and compact structure reduces resistance, raises the efficiency.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is that the utility model is contained in the work schematic representation of discharging the enterprising liquid process of advancing of valve seat;

Fig. 2 is that the utility model is contained in the work schematic representation that carries out the discharge opeing process on the discharge valve seat;

Fig. 3 is a piston structure schematic representation of the present utility model;

Fig. 4 is a spacing ring washer structural representation of the present utility model;

Fig. 5 is a suction valve valve structure schematic representation of the present utility model.

Among the figure: 1, discharge flap, 2, discharge valve seat, 3, seal ring, 4, guide ring, 5, piston ring, 6, piston, 7, cylinder sleeve (or cylinder body), 8, spacing ring washer, 9, suck flap, 10, spacing ring washer groove, 11, suck the flap guide surface, 12, suck valve seat, 13, fluid passage, 14, fluid passage, 15, sealing surface of seat, 16, fluid passage, 17, fluid passage, 18, guide surface, 19, the flap sealing surface

Embodiment

As Fig. 1～shown in Figure 5, the utility model comprises: guide ring 4, and piston ring 5, piston 6, cylinder sleeve 7, spacing ring washer 8 sucks flap 9, spacing ring washer groove 10; Piston 6 is housed in cylinder sleeve 7, piston 6 big end external cylindrical surfaces are equipped with guide ring 4 and piston ring 5 from left to right successively, piston 6 big end inner cylindrical surfaces have the spacing ring washer groove 10 of adorning spacing ring washer 8 from left to right successively, big column hole, the centre of dress suction flap 9 has the suction valve seat 12 of fluid passage 13, suck valve seat 12 both sides and have another fluid passage 14 that is connected with fluid passage 13, the big column hole face that dress sucks flap 9 is suction flap guide surface 11, and the end face that sucks valve seat 12 is a sealing surface of seat 15.The utility model is contained in discharges on the valve seat 2, and with seal ring 3 sealings, its liquid port is communicated with for 1 mouthful with the discharge flap of valve seat 2.

Shown in Fig. 5 a, Fig. 5 b, Fig. 5 a, it is I-shaped sucking flap 9, the first-class branch of suction flap 9 end faces near piston 6 big end inner cylindrical surface one ends has round liquid passage 17, the first-class branch of suction flap end face of the other end has semicircle another fluid passage 16, outer side surface is a flap sealing surface 19, two passages 16,17 are interconnected, and sucking flap 9 external cylindrical surfaces is guide surface 18.

Working procedure is as follows:

As shown in Figure 1, when piston 6 moves right, piston 6 moves to lower dead centre e from upper dead center d, and its inertial force makes suction flap 9 leave suction valve seat 12 and opens, and liquid enters in the cylinder, finish suction process, because partially liq has entered piston 6 inside in discharge process, the liquid absorption of suction process is reduced relatively, because the liquid absorption in the suction process reduces relatively, the imbibition resistance is reduced, raise the efficiency.As shown in Figure 2, when piston 6 during to left movement, piston 6 moves to upper dead center d from lower dead centre e, piston inertia power turns to, and the inertial force that sucks flap 9 makes flap press to suction valve seat 12 and makes valve closing, and liquid enters the discharge state, after overcoming the expulsion valve resistance liquid is discharged, in discharge process, there is partially liq to have the enough time to enter piston 6 inner spaces simultaneously, intake is reduced relatively.

Claims

1, a kind of Inertia Sunction Pump Using For Carbon Dioxide is characterized in that comprising: guide ring (4), and piston ring (5), piston (6), cylinder sleeve (7), spacing ring washer (8) sucks flap (9), spacing ring washer groove (10); Piston (6) is housed in cylinder sleeve (7), piston (6) holds external cylindrical surface that guide ring (4) and piston ring (5) are housed from left to right successively greatly, piston (6) is held inner cylindrical surface to have successively from left to right greatly and is adorned the spacing ring washer groove (10) of spacing ring washer (8), big column hole, the centre of dress suction flap (9) has the suction valve seat (12) of fluid passage (13), suck valve seat (12) both sides and have another fluid passage (14) that is connected with fluid passage (13), the end face that sucks valve seat (12) is sealing surface of seat (15).

2, a kind of Inertia Sunction Pump Using For Carbon Dioxide according to claim 1, it is characterized in that: said suction flap (9) is for I-shaped, hold the first-class branch of suction flap (9) end face of inner cylindrical surface one end to have round liquid passage (17) greatly near piston (6), the first-class branch of suction flap (9) end face circumference of the other end has semicircle another fluid passage (16), and two passages (16,17) are interconnected.