CN2833181Y - Respiration type horizontal middle-open double-suction pump - Google Patents

Abstract

The utility model relates to a respiration type horizontal middle-open double-suction pump. The utility model is characterized in that the pump is provided with a vacuum suction device; an induction chamber is arranged on the inlet end of the pump and is composed of a suction pipe, an induction chamber cavity, a floating ball, a floating ball lever, a liquid level switch and contacts; the outlet end of the pump is provided with an air sealing chamber with a one-way valve body; thus, the non-drive end of a pump shaft is exposed outside a pump body and is supported in a bearing box by a bearing, and the bearing box is connected with the pump body; the shaft end of the pump is provided with a connecting rod synchronizing and clutching mechanism which is composed of the pump shaft, the bearing box, a connecting rod, an outer gear with an eccentric wheel, an inner slide gear and a clutching handle; the connecting rod synchronizing and clutching mechanism is connected with a respiration chamber which is composed of an upper cavity body, a lower cavity body, a ripple seal film, an upper respiration chamber, a lower respiration chamber, a left valve core, a middle valve core, a right valve core, a connecting rod and a powder shaft sleeve; an electric control valve is arranged on a pipe passage between the induction chamber and the respiration chamber. The utility model does not need the arrangement of a bottom valve and previous pump priming. The pump can directly inhale, exhale, supply water and work after the pump starts and has zero leakage and safe use.

Description

Drive double suction pump in the respiration type horizontal type level

Technical field

The utility model belongs in the horizontal type level of carrying liquid medium to use drives double suction pump, especially relates in a kind of respiration type horizontal type level and drives double suction pump.

Background technique

At present, open its structure of double suction pump in traditional horizontal type level: by the pump housing, impeller, pump cover, pump shaft is formed, the pump housing is the axially split type structure, suction and discharge tube are positioned at pump housing Lower Half, import and export pipeline and motor be need not dismantle and all parts and sealing part abrasion situation just can be checked, and can take off whole rotor part and keep in repair, but when carrying various medium with it, a maximum shortcoming is exactly: before startup, when pump is worked under positive pressure, just can't use drawdown to the state below the pump center line, must seal the intake pipe bottom valve, use the manual priming, make water be full of intake pipe and impeller cavity; And for those pumps of under condition of negative pressure, working, also can only adopt the scheme that adds vacuum pump, but this has occurred again, and number of devices is many, floor space big, pipeline connects many unfavorable factors such as many, that leakage rate is big, not only uses inconvenience, and the using scope of pump also has been subjected to limitation.

Summary of the invention

The utility model is intended to existing defective and deficiency in the above-mentioned technology, and unique suction vacuum system is provided, and neither need to be provided with bottom valve and pump priming in advance, have the working life of growing again, can also guarantee that inhaling vacuum system does not intake fully, volume is less.

The purpose of this utility model realizes with following technological scheme: drive double suction pump in a kind of respiration type horizontal type level, comprise by the pump housing, impeller, pump cover, the double suction pump that pump shaft is formed, be characterised in that: dress is inhaled vacuum system on double suction pump, its structure of inhaling vacuum system is mainly by induction chamber, the envelope air chamber, pump shaft, bearing housing, connecting rod synchronous interface mechanism, respiratory chamber, electrically-controlled valve, sucking pipe is formed, at the pump housing entry end induction chamber is installed, at the pump housing outlet end envelope air chamber is installed, the anti-drive end of pump shaft is exposed outside the pump housing, in the bearing housing that bearing is bearing in the pump housing is connected, bearing housing is by last, following case lid is formed, load bar synchronous interface mechanism on its shaft part, connecting rod synchronous interface mechanism connects respiratory chamber, respiratory chamber top dress electrically-controlled valve, one end of electrically-controlled valve is connected with an end of sucking pipe, and the other end of sucking pipe is connected on the induction chamber; Described induction chamber, by the suction valve pipe, the induction chamber cavity, ball float, ball lever, ball float contact type liquid-level switch, the contact is formed, on the suction valve pipe, be connected with the induction chamber cavity, the induction chamber cavity is built-in with the ball float that ball lever one end connects, the other end of ball lever can touch mutually with the contact of ball float contact type liquid-level switch, it selects the ball float of unlike material for use according to the working condition of medium, according to law of buoyancy, in suction valve pipe and induction chamber cavity, be full of medium, ball float is floated, ball float rises under floating function, ball float and liquid-level switch contacting when reaching a certain height, electrical signal of liquid-level switch contact output this moment, this signal drives electric control valve and closes, cut off the path of medium and respiratory chamber, prevent that medium from entering respiratory chamber because of suction function; This signal also can be used as the control signal when using magnetic clutch simultaneously.Described envelope air chamber is made up of check valve body, valve rod, spool, valve port, and valve port is established in the bottom in check valve body, is equipped with the spool that valve rod connects on valve port; Before pump was breathed and finished, one-way valve was in closed condition all the time, to guarantee the breathing performance normal reliable of pump; After treating that the pump breathing finishes, pressure medium is opened valve, and medium begins normal conveying.Described connecting rod synchronous interface mechanism is made up of pump shaft, bearing housing, eccentric wheel external gear, slip internal gear, bearing, crank, connecting rod, clutch handle, dress eccentric wheel external gear on the non-driving section of pump shaft in bearing housing, slip internal gear with the engagement of eccentric wheel external gear, insert bearing on the eccentric wheel external diameter of external gear, the bearing outer ring cover cranks, crank and connecting rod hinge joint, the slip internal gear connects clutch handle; Before the pump startup, the moving coupling of dish is also pulled and clutch handle that the internal gear that slides links, makes inside and outside gear engagement, primer pump then, and during the pump shaft rotation, the crank drivening rod is reciprocating, and connecting rod drives respiratory chamber work; After the pump proper functioning, to pull clutch handle external gear and internal gear are separated, connecting rod stops action, and respiratory chamber also quits work at this point; Avoid like this at pump from the whole process that starts to shutdown, respiratory chamber is in running order always, thereby avoids unnecessary consumption power and lazy-tongs to influence the normal operation of pump and the noise of generation; Described respiratory chamber, it is by last, lower chamber, middle spool, the ripple sealing film, on, under breathe body, a left side, right spool, connecting rod, the powder metallurgy axle sleeve is formed, last, in the body cavity of lower chamber combination, establish valve port in the upper cavity, there is middle spool the valve port lower end, make respectively with the ripple sealing film, under breathe body sealing, and be separated into, following cavity, the valve port lower end of last breathing body connects left spool, the bottom valve port of lower shell body connects right spool, on, breathe body down and be connected with an end of connecting rod, the other end of connecting rod passes powder metallurgy axle sleeve and the crank hinge joint that is loaded on lower shell body.When the breathing body was gone up in the connecting rod drive and the breathing body moves downward down, epicoele became low-pressure cavity, and the air in the inhale pipe and the pump housing enters epicoele by middle spool, and the air of cavity of resorption is compressed simultaneously, and left spool is closed, the outside atmosphere of exhaling of right spool; When the breathing body was gone up in the connecting rod drive and the breathing body moves upward down, the air of epicoele was compressed and becomes high pressure, and cavity of resorption becomes low-pressure cavity, and middle spool is closed, and left spool is exhaled to cavity of resorption, closes at atmospheric action bottom right spool simultaneously, circulation like this.Combine the above technical measures of being taked, realize the purpose of this utility model.

The utility model compared with the prior art, on double suction pump, adopted unique suction vacuum system, neither need to be provided with bottom valve and pump priming in advance, after just can reaching pump startup, directly air-breathing, exhale, last water, work, zero leakage, has long working life again, can also guarantee that inhaling vacuum system does not intake fully, the purpose that volume is less realizes the zero leakage of the medium of the various harsh conditions of conveying, and is safe and reliable, in the leakage that prevents the poisonous and harmful medium, solve " three wastes ", new approach has been opened up in aspects such as minimizing environmental pollution, and its economic and social benefit is very remarkable.

Description of drawings

The utility model has two width of cloth accompanying drawings, wherein:

Accompanying drawing 1 is an embodiment's of the present utility model main TV structure schematic representation

Accompanying drawing 2 is side views of Fig. 1

Among the figure: 1, external tooth type eccentric wheel 2, bearing 3, crank 4, slip internal gear 5, connecting rod 6, sintered metal powder bearing 7, on, lower chamber 8, a left side, in, right one-way valve 9, electrically-controlled valve 10 sucking pipes 11, on, under breathe body 12, ripple sealing film 13, clutch handle 14, bearing housing loam cake 15, bearing 16, bearing housing lower cover 17, valve port 18, the pump housing 19, pump cover 20, impeller 21, pump shaft 22, suck pipe valve 23, induction chamber cavity 24, ball float 25, ball float contact type liquid-level switch 26, contact 27, ball lever 28, check valve body 29, valve rod 30, spool

Embodiment

Shown in Figure 1 is embodiment of the present utility model, be to carry in the sewage treatment in the respiration type horizontal type level of usefulness to drive double suction pump, its structure comprises: by the pump housing 18, impeller 20, pump cover 19, dress is inhaled vacuum system on the double suction pump that pump shaft 21 is formed, its structure of inhaling vacuum system is mainly by induction chamber, the envelope air chamber, pump shaft 21, bearing housing, connecting rod synchronous interface mechanism, respiratory chamber, electrically-controlled valve 9, sucking pipe 10 is formed, adorn by suction valve pipe 22 at the entry end of the pump housing 18, induction chamber cavity 23, ball float 24, ball lever 27, ball float contact type liquid-level switch 25, the induction chamber that contact 26 is formed, adorn by check valve body 28 at the outlet end of the pump housing 18, valve rod 29, spool 30, the envelope air chamber that valve port 17 is formed, make pump shaft 21 anti-drive end expose outside the pump housing 18, be bearing in the bearing housing that is connected with the pump housing 18 with bearing 15, bearing housing is by last, following case lid 14,16 form, dress is by pump shaft 21 on its shaft part, on, following case lid 14,16 bearing housings of forming, eccentric wheel external gear 1, slip internal gear 4, bearing 2, crank 3, connecting rod 5, the connecting rod synchronous interface mechanism that clutch handle 13 is formed, connecting rod synchronous interface mechanism connects by last, lower chamber 7, middle spool 8, ripple sealing film 12, on, under breathe body 11, a left side, right spool 8, connecting rod 5, the respiratory chamber that powder metallurgy axle sleeve 6 is formed, respiratory chamber top dress electrically-controlled valve 9, one end of electrically-controlled valve 9 is connected with an end of sucking pipe 10, and the other end of sucking pipe 10 is connected on the induction chamber.

Claims (5)

1, drive double suction pump in a kind of respiration type horizontal type level, comprise by the pump housing (18), impeller (20), pump cover (19), the double suction pump that pump shaft (21) is formed, be characterised in that: dress is inhaled vacuum system on double suction pump, its structure of inhaling vacuum system is mainly by induction chamber, the envelope air chamber, pump shaft (21), bearing housing, connecting rod synchronous interface mechanism, respiratory chamber, electrically-controlled valve (9), sucking pipe (10) is formed, at the pump housing (18) entry end dress induction chamber, at the pump housing (18) outlet end dress envelope air chamber, the anti-drive end of pump shaft (21) is exposed outside the pump housing (18), be bearing in the bearing housing that is connected with the pump housing (18) with bearing (15), bearing housing is by last, following case lid (14), (16) form, load bar synchronous interface mechanism on its shaft part, connecting rod synchronous interface mechanism connects respiratory chamber, respiratory chamber top dress electrically-controlled valve (9), one end of electrically-controlled valve (9) is connected with an end of sucking pipe (10), and the other end of sucking pipe (10) is connected on the induction chamber.

2, by driving double suction pump in the described respiration type horizontal type level of claim 1, it is characterized in that: described induction chamber, by sucking pipe valve (22), induction chamber cavity (23), ball float (24), ball lever (27), ball float contact type liquid-level switch (26), go up connection induction chamber cavity (23) at suction valve pipe (22), induction chamber cavity (23) is built-in with the ball float (24) that ball lever (27) one ends connect, and the other end of ball float (24) can touch mutually with the contact (26) of ball float contact type liquid-level switch liquid-level switch (25).

3, by driving double suction pump in the described respiration type horizontal type level of claim 1, it is characterized in that: described envelope air chamber is made up of check valve body (28), valve rod (29), spool (30), valve port (17), valve port (17) is established in bottom in check valve body (28), is equipped with the spool (30) that valve rod (29) connects on valve port (17).

4, by driving double suction pump in the described respiration type horizontal type level of claim 1, it is characterized in that: described connecting rod synchronous interface mechanism is by pump shaft (21), bearing housing, eccentric wheel external gear (1), slip internal gear (4), bearing (2), crank (3), connecting rod (5), clutch handle (13) is formed, dress eccentric wheel external gear (1) on pump shaft in bearing housing (21) section, slip internal gear (4) with eccentric wheel external gear (1) engagement, insert bearing (2) on the eccentric wheel of external gear (1) external diameter, crank (3) are overlapped in bearing (2) outer ring, crank (3) and connecting rod (5) hinge joint, slip internal gear (4) connects clutch handle (13).

5, by driving double suction pump in the described respiration type horizontal type level of claim 1, it is characterized in that: described respiratory chamber, by last, lower chamber (7), middle spool (8), ripple sealing film (12), on, under breathe body (11), a left side, right spool (8), connecting rod (5), powder metallurgy axle sleeve (6) is formed, last, in the body cavity of lower chamber (7) combination, upper cavity is established valve port in (7), there is middle spool (8) the valve port lower end, make respectively with ripple sealing film (12) in the body cavity, under breathe body (11) sealing, and be separated into, following cavity, the valve port lower end of last breathing body (11) connects left spool (8), the bottom valve port of lower shell body (11) connects right spool (8), on, breathe body (11) down and be connected with an end of connecting rod (5), the other end of connecting rod (5) passes the powder metallurgy axle sleeve (6) and crank (3) hinge joint that is loaded on lower shell body (11).

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