CN202646024U

CN202646024U - Monoblock self-priming pump

Info

Publication number: CN202646024U
Application number: CN2012202760833U
Authority: CN
Inventors: 钱万钧; 徐节
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-08
Filing date: 2012-06-08
Publication date: 2013-01-02
Anticipated expiration: 2022-06-08

Abstract

The utility model discloses a monoblock self-priming pump and relates to the field of a self-priming pump of which a motor lengthening shaft is directly and additionally provided with an impeller. A mechanical seal (15) on the motor lengthening shaft (14) is located between the impeller (19) and an inner pump cover (17); the impeller (19) is arranged on the motor lengthening shaft (14) through a key (18); a pressure-operated valve and a suction inlet and nozzle outlet united self-priming device (23) are arranged outside a pump body (6); a gas-liquid separation tube (9) in the pump body (6) is mutually communicated with a discharge flange (7); a check flap door (2) is arranged between a water inlet adapter tube (4) and a suction flange (1) on the pump body (6); a lengthening shaft motor (13) is arranged on an outer pump cover (12); and the inner pump cover (17) is arranged between the outer pump cover (12) and the pump body (6). The pump body (6) is also provided with a pump body bottom cover plate (21), a vent valve (25), an irrigation plug (28), a drainage plug (26) and a pump foot. The monoblock self-priming pump is short in self-priming time and simple in structure.

Description

A kind of straight connection type self-priming pump

Technical field

A kind of straight connection type self-priming pump of the utility model relates to a kind of self-priming pump field that directly installs impeller on the motor extension shaft additional.

Background technique

The motor output shaft of self-priming pump need to could link together with pump shaft by coupling in the past, if can design a kind of motor extension shaft, impeller was directly installed on the motor extension shaft, obviously, can make the self-priming pump designs simplification; For hydraulic performance and the efficient that improves self-priming pump; then can install additional in the design of the pump housing outside and press valve and inhale spout associating self-priming apparatus; in the pump housing, install the gas-liquid separation pipe that has the grid groove additional; and in order to eliminate aqueous reflux siphonic effect when shutting down; between water inlet adapter and suction flange, install the fluid stopping flapper additional; if can design the self-priming pump structure with above these technical characteristicss, then can reduce the volumetric loss of self-priming pump, thereby can improve the efficient of self-priming pump.

Summary of the invention

The purpose of this utility model provides a kind of straight connection type self-priming pump, and install additional at the pump housing and to press valve and to inhale spout associating self-priming apparatus, in the pump housing, install the gas-liquid separation pipe additional, and take over front end in water inlet and install the fluid stopping flapper additional, to reach the hydraulic performance that improves self-priming pump and the purpose of efficient.

A kind of straight connection type self-priming pump, by suction flange, fluid stopping flapper, water inlet adapter, the pump housing, outlet(discharge) flange, gas-liquid separation pipe, outer pump cover, extension shaft motor, motor extension shaft, mechanical seal, interior pump cover, key, impeller, pump housing bottom plate, press valve and inhale spout associating self-priming apparatus, outlet valve, drainage stopper and the plug of pouring water and form, motor extension shaft at the extension shaft motor is set with mechanical seal, and on the motor extension shaft, by key impeller is installed, adds fastening screw trip bolt at motor extension shaft axle head; Outside the pump housing, add and press valve and inhale spout associating self-priming apparatus; The gas-liquid separation pipe that installs additional in the pump housing is connected with outlet(discharge) flange; Between water inlet adapter that the pump housing installs additional and suction flange, clamped the fluid stopping flapper; The extension shaft motor is installed on the outer pump cover, has clamped interior pump cover between outer pump cover and the pump housing, adds pump housing bottom plate in pump housing bottom; Outlet valve and the plug of pouring water that is contained on the water irrigating hole are housed respectively in both sides, pump housing top; In the weep hole of pump housing bottom, drainage stopper is installed, in the pump housing bottom pump pin is installed.

The working principle of a kind of straight connection type self-priming pump work is described as follows:

Before this a kind of straight connection type self-priming pump starts, open the plug of pouring water, in the water irrigating hole on pump housing top, pour water, make in the pump housing liquid storage cylinder A and fill water, behind the extension shaft electric motor starting, impeller High Rotation Speed on the drive motor extension shaft, then the pressing valve and inhaling spout associating self-priming apparatus on being installed in the pump housing of the water in the liquid storage cylinder A enters among the water inlet flow channel chamber B of the pump housing, at this moment the water among the B of water inlet flow channel chamber mixes with the gas that is entered in the B of water inlet flow channel chamber by the water inlet adapter, form gas-liquid mixture, because the jet action of above-mentioned suction spout, after the water among the liquid storage cylinder A enters into water inlet flow channel chamber B, in the suction port formation vacuum of impeller, accelerated gas-liquid mixed, so just improve the inlet capacity to liquid, also shortened self-priming time; Before above-mentioned gas-liquid mixture is discharged to pump discharge under impeller action, carry out gas-liquid separation through the grid groove on the gas-liquid separation pipe in the pump housing first, most of gas is discharged by the outlet(discharge) flange of pump housing upper end in the gas-liquid mixture, after small part gas enters gas-liquid separation chamber C in the pump housing and proceeds gas-liquid separation with liquid, outlet valve through pump housing upper end is discharged the pump housing, the liquid of separating is then refluxed by above-mentioned gas-liquid separation chamber C and enters into the liquid storage cylinder A that is communicated with it, through above-mentioned iterative cycles operation, until make in the pump housing and when being installed in gas in the suction line on the pump housing and being drained, self-priming pump begins normal operation.After the self-priming pump outlet pressure was elevated to the authorized pressure value, above-mentioned outlet valve is autoshutdown under hydraulic pressure, pressed valve and inhale to press also autoshutdown under the differential pressure action of liquid storage cylinder A and water inlet flow channel chamber B of valve in the spout associating self-priming apparatus; Simultaneously; the fluid stopping flapper that is installed between suction flange and the water inlet adapter can keep off the water in the pump housing gas-liquid separation chamber C; can not discharge through pump inlet; and can wash the fluid stopping flapper open through the water that pump inlet sucks; after the water inlet adapter enters into the water inlet flow channel chamber B of the pump housing; at last by the pump housing through the gas-liquid separation pipe; the outlet of outlet(discharge) flange excavationg pump; when termination of pumping; because the hydraulic pressure in the pump housing makes fluid stopping flapper autoshutdown greater than the hydraulic pressure in the suction line, refluence siphonic effect after this has just eliminated and has shut down; thereby make this self-priming pump through a drainage; can realize the effect of lifelong self-priming, namely later on start has not needed again water filling.

A kind of straight connection type self-priming pump structure further specifies as follows:

Press valve and inhale the logical seal ring of inner valve body that presses valve in the spout associating self-priming apparatus and be installed in the outer valve, outer valve is installed on the pump housing by outer valve pump housing threaded connector, the liquid storage cylinder A of the pump housing is connected with the inner valve body cavity of resorption by the water inlet of opening at the inner valve body that presses valve, the rubber valve plate is installed in the inner valve body cavity of resorption, can make and open between inner valve body epicoele and cavity of resorption or close, inhale spout and be installed between outer valve and the pump housing, inhaling spout is open circles frustum shape.

The extension shaft motor is installed on the outer pump cover by the outer pump cover connecting bolt of motor, outer pump cover is installed on the pump housing by outer pump cover pump housing connecting bolt, clamped interior pump cover between outer pump cover seam and the pump housing, the mechanical seal that is sleeved on the motor extension shaft axially is positioned between impeller and pump cover seam, and the liquid in the pump housing is sealed.

Outlet(discharge) flange be installed on the pump housing by outlet(discharge) flange pump housing threaded connector and the pump housing in the gas-liquid separation pipe on, have grid groove with some through holes at the gas-liquid separation tube wall of tubular shape.

Water inlet is taken over by water inlet adapter pump housing threaded connector and is installed on the pump housing, suction flange is taken over connecting bolt by the suction flange water inlet and is connected with the water inlet adapter, fluid stopping flapper one end is installed between the inboard seam of suction flange and the water inlet adapter, and the fluid stopping flapper the other end places the suction flange inboard to stretch out outside the piece.

Pump housing bottom plate is installed in pump housing bottom by pump housing bottom plate threaded connector.

A kind of straight connection type self-priming pump advantage is that impeller directly is installed on the motor extension shaft, need not coupling and pump shaft, after the water filling drainage, need not again water filling; The self-priming time of pump is short, and hydraulic performance is good, and efficient is high, and is simple in structure, easy for installation.

Description of drawings

Fig. 1: a kind of straight connection type self-priming pump master looks cross-sectional schematic.

Fig. 2: a kind of straight connection type self-priming pump master looks the form structure schematic diagram.

Fig. 3: for looking schematic diagram in the left side of a kind of straight connection type self-priming pump among Fig. 1.

Embodiment

Referring to each accompanying drawing, a kind of straight connection type self-priming pump, by suction flange (1), fluid stopping flapper (2), (4) are taken in water inlet, the pump housing (6), outlet(discharge) flange (7), gas-liquid separation pipe (9), outer pump cover (12), extension shaft motor (13), motor extension shaft (14), mechanical seal (15), interior pump cover (17), key (18), impeller (19), pump housing bottom plate (21), press valve and inhale spout associating self-priming apparatus (23), outlet valve (25), drainage stopper (26) and the plug of pouring water (28) form, motor extension shaft (14) at extension shaft motor (13) is set with mechanical seal (15), and by key (18) impeller (19) is installed at motor extension shaft (14), adds fastening screw trip bolt (20) at motor extension shaft (14) axle head; Outside the pump housing (6), add and press valve and inhale spout associating self-priming apparatus (23); The gas-liquid separation pipe (9) that installs additional in the pump housing (6) is connected with outlet(discharge) flange (7); Take between (4) and the suction flange (1) in water inlet that the pump housing (6) installs additional and to have clamped fluid stopping flapper (2); Extension shaft motor (13) is installed on the outer pump cover (12), has clamped interior pump cover (17) between outer pump cover (12) and the pump housing (6), adds pump housing bottom plate (21) in the pump housing (6) bottom; In the pump housing (6) both sides, top outlet valve (25) is housed respectively and is contained in the plug of pouring water (28) on the water irrigating hole (27); In the weep hole of the pump housing (6) bottom, drainage stopper (26) is installed, in the pump housing (6) bottom the pump pin is installed.

Referring to Fig. 1, press valve and inhale the inner valve body that presses valve in the spout associating self-priming apparatus 23 and be installed in the outer valve by seal ring, the outer valve that presses valve and suction spout associating self-priming apparatus 23 is installed on the pump housing 6 by outer valve pump housing threaded connector 24, the liquid storage cylinder A of the pump housing 1 is connected with the inner valve body cavity of resorption by the water inlet of opening at the inner valve body that presses valve, the rubber valve plate is installed in the inner valve body cavity of resorption, can make between inner valve body epicoele and cavity of resorption and when opening, be connected, be isolated when closing, the suction spout that is open circles frustum shape is installed between outer valve and the pump housing 6.

Referring to Fig. 1 and Fig. 2, extension shaft motor 13 is installed on the outer pump cover 12 by the outer pump cover connecting bolt 16 of motor, outer pump cover 12 is installed on the pump housing 6 by outer pump cover pump housing connecting bolt 11,6 of outer pump cover 12 seams and the pump housings have clamped interior pump cover 17, motor extension shaft 14 in the motor lengthening axis hole that penetrates at interior pump cover 17 is set with mechanical seal 15, mechanical seal 15 axially is positioned between impeller 19 and interior pump cover 17 seams, and the liquid in the pump housing 6 is sealed; The 20 pairs of impellers of fastening screw trip bolt 19 that install additional at motor extension shaft 14 axle heads carry out axially locating.

As shown in Figure 1, outlet(discharge) flange 7 be installed on the pump housing 6 by outlet(discharge) flange pump housing threaded connector 8 and the pump housing 6 in gas-liquid separation pipe 9 on, have the grid groove 10 of some through holes at gas-liquid separation pipe 9 tube walls of tubular shape.

Water inlet adapter 4 is taken over pump housing threaded connector 5 by water inlet and is installed on the pump housing 6, suction flange 1 is taken over connecting bolt 3 by the suction flange water inlet and is connected with water inlet adapter 4, fluid stopping flapper 2 one ends of disc-shaped are installed in suction flange 1 inboard seam and water inlet is taken between 4, and fluid stopping flapper 2 the other ends are shelved on actively suction flange 1 the inner and stretch out the piece place.

Pump housing bottom plate 21 is installed in the pump housing 6 bottoms by pump housing bottom plate threaded connector 22.

Referring to Fig. 3, be separately installed with outlet valve 25 in both sides, the pump housing 6 top and the plug 28 of pouring water, the plug 28 of pouring water is installed on the water irrigating hole 27 in the pump housing 6; In the pump housing 6 bottom weep holes, drainage stopper 26 is installed, in the pump housing 6 bottoms some pump pin is installed, for this a kind of straight connection type self-priming pump of supporting.

Claims

1. straight connection type self-priming pump, by suction flange (1), fluid stopping flapper (2), (4) are taken in water inlet, the pump housing (6), outlet(discharge) flange (7), gas-liquid separation pipe (9), outer pump cover (12), extension shaft motor (13), motor extension shaft (14), mechanical seal (15), interior pump cover (17), key (18), impeller (19), pump housing bottom plate (21), press valve and inhale spout associating self-priming apparatus (23), outlet valve (25), drainage stopper (26) and the plug of pouring water (28) form, it is characterized in that being set with mechanical seal (15) at the motor extension shaft (14) of extension shaft motor (13), and by key (18) impeller (19) is installed at motor extension shaft (14), adds fastening screw trip bolt (20) at motor extension shaft (14) axle head; Outside the pump housing (6), add and press valve and inhale spout associating self-priming apparatus (23); The gas-liquid separation pipe (9) that installs additional in the pump housing (6) is connected with outlet(discharge) flange (7); Take between (4) and the suction flange (1) in water inlet that the pump housing (6) installs additional and to have clamped fluid stopping flapper (2); Extension shaft motor (13) is installed on the outer pump cover (12), has clamped interior pump cover (17) between outer pump cover (12) and the pump housing (6), adds pump housing bottom plate (21) in the pump housing (6) bottom; In the pump housing (6) both sides, top outlet valve (25) is housed respectively and is contained in the plug of pouring water (28) on the water irrigating hole (27); In the weep hole of the pump housing (6) bottom, drainage stopper (26) is installed, in the pump housing (6) bottom the pump pin is installed.

2. a kind of straight connection type self-priming pump according to claim 1, the valve inner valve body that presses that it is characterized in that pressing valve and inhale in the spout associating self-priming apparatus (23) is installed in the outer valve by seal ring, outer valve is installed on the pump housing (6) by outer valve pump housing threaded connector (24), and the suction spout that is open circles frustum shape is installed between outer valve and the pump housing (6).

3. a kind of straight connection type self-priming pump according to claim 1, it is characterized in that extension shaft motor (13) is by on outer pump cover connecting bolt (16) the installation outer pump cover of motor (12), outer pump cover (12) is installed on the pump housing (6) by outer pump cover pump housing connecting bolt (11), clamped interior pump cover (17) between outer pump cover (12) seam and the pump housing (6), mechanical seal (15) axially is positioned between impeller (19) and interior pump cover (17) seam, and the fastening screw trip bolt (20) that installs additional at motor extension shaft (14) axle head carries out axially locating to impeller (19).

4. a kind of straight connection type self-priming pump according to claim 1, it is characterized in that outlet(discharge) flange (7) is installed on the gas-liquid separation pipe (9) in the upper and pump housing (6) of the pump housing (6) by outlet(discharge) flange pump housing threaded connector (8), have grid groove (10) with some through holes at gas-liquid separation pipe (9) tube wall of tubular shape.

5. a kind of straight connection type self-priming pump according to claim 1, it is characterized in that taking over (4) into water is installed on the pump housing (6) by water inlet adapter pump housing threaded connector (5), suction flange (1) is taken over (4) by suction flange water inlet adapter connecting bolt (3) and water inlet and is connected.

6. a kind of straight connection type self-priming pump according to claim 1, fluid stopping flapper (2) one ends that it is characterized in that disc-shaped are installed between the inboard seam of suction flange (1) and the water inlet adapter (4), and fluid stopping flapper (2) the other end is shelved on actively suction flange (1) the inner and stretches out the piece place.

7. a kind of straight connection type self-priming pump according to claim 1 is characterized in that pump housing bottom plate (21) is installed in the pump housing (6) bottom by pump housing bottom plate threaded connector (22).