CN210106266U - A backwash structure of an explosion-proof sand discharge pump - Google Patents

Abstract

The utility model discloses a backwash structure of an explosion-proof sand discharge pump, which comprises a connecting shaft connected to the bottom end of an impeller shaft of the sand discharge pump and a ring plate fixedly installed on the inner wall of the base of the sand discharge pump. The connecting shaft is sleeved with a A one-way bearing, a rotating drum is sleeved on the one-way bearing, a blade is fixedly connected to the side wall of the rotating drum, a horizontal bar is fixedly connected to the lower end of the rotating drum, and two cleaning The two cleaning mechanisms are symmetrically arranged, the lower end surface of the ring plate is fixedly connected with a plurality of abutting blocks corresponding to the cleaning mechanism at equal intervals along its circumferential direction, and the lower end surface of the abutting blocks is an arc structure. By arranging a cleaning mechanism, the utility model can realize backwashing of the base and cleaning of the inner wall of the base when no sand discharge operation is performed, especially cleaning and clearing the sand inlet hole on the base.

Description

A backwash structure of an explosion-proof sand discharge pump

technical field

The utility model relates to the technical field of sand discharge pumps, in particular to a backwash structure of an explosion-proof sand discharge pump.

Background technique

Explosion-proof submersible sand pump is suitable for coal mines, metallurgy, electric power, building materials and other industrial sectors, with gas and inflammable and explosive places, to transport mixed sewage containing suspended solid particles such as sediment, cinder, fibers, etc. or have certain corrosiveness of liquid. The pump should have the functions of explosion-proof, wear-resistant and anti-corrosion, and the main structure includes the base, motor, impeller, etc.

However, after the sand removal operation of the base of the explosion-proof sand discharge pump, sand will accumulate inside, especially in the sand inlet hole of the base, which will cause blockage, which will affect the normal sand feeding and normal sand removal operation. Therefore, it is necessary to design a backwash structure of an explosion-proof sand pump to realize the functions of backwash and blockage removal.

Utility model content

The purpose of the utility model is to propose a backwash structure of an explosion-proof sand discharge pump in order to solve the shortcomings existing in the prior art.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A backwash structure of an explosion-proof sand discharge pump comprises a connecting shaft connected to the bottom end of the impeller shaft of the sand discharge pump and a ring plate fixedly installed on the inner wall of the base of the sand discharge pump, the connecting shaft is sleeved with a one-way bearing, so the A rotating drum is sleeved on the one-way bearing, a blade is fixedly connected to the side wall of the rotating drum, and a cross bar is fixedly connected to the lower end of the rotating drum. The cleaning mechanism is symmetrically arranged, a plurality of abutting blocks corresponding to the cleaning mechanism are fixedly connected on the lower end surface of the ring plate at equal intervals along its circumferential direction, and the lower end surface of the abutting blocks is an arc structure.

Preferably, the cleaning mechanism includes a vertical rod fixedly connected to the upper end of the horizontal rod, a limit chute is provided on the side wall of the vertical rod, and a limit slider that can move up and down is slidably connected in the limit chute. , a brush rod is fixedly connected to the side wall of the limit slider, the side wall of the brush rod is evenly distributed with bristles, and the bristles are in contact with the inner wall of the sand pump base, and the lower end of the brush rod is fixedly connected with a spring , the lower end of the spring is fixedly connected to the cross bar, and the position of the abutting block corresponds to the position of the brush bar.

Preferably, the vanes are integrally formed with the rotating drum.

Preferably, the cross sections of the limit chute and the limit slider are T-shaped structures that are adapted to each other.

Preferably, a rotating sealing ring is provided at the rotating part of the connecting shaft and the rotating drum.

The beneficial effects of the present utility model:

By setting the connecting shaft, the rotating drum and the one-way bearing, when the impeller shaft of the sand pump rotates normally, the setting of the one-way bearing prevents the connecting shaft from driving the rotating drum, that is, the backwashing structure does not work.

By setting the cleaning mechanism and the cross bar, when the sand pump is not used for sand removal, the internal motor of the sand pump is reversed, and the impeller shaft is driven to reverse, which can drive the rotating drum to reverse, drive the cross bar to rotate, and then drive The vertical rod rotates and rotates with the vertical rod. When the upper end of the brush rod rotates until the lower end face of the abutment block is in contact, the vertical rod can be moved downward by being pressed by the abutment block. When the brush rod is rotated away from the abutment block, the spring can make the brush rod go up Move and reset, as the brush rod rotates and moves up and down, the inner wall of the base can be cleaned by the brushes on the upper end of the vertical rod, especially the sand inlet holes on the base are cleaned and blocked.

Description of drawings

Fig. 1 is the structural representation of a kind of explosion-proof sand pump backwash structure proposed by the utility model;

Fig. 2 is an enlarged view at A in Fig. 1;

3 is a schematic structural diagram of a limit chute and a limit slider of a backwash structure of an explosion-proof sand pump proposed by the utility model;

FIG. 4 is a schematic structural diagram of a block of a backwash structure of an explosion-proof sand discharge pump proposed by the utility model.

In the picture: 1 connecting shaft, 2 base, 3 ring plate, 4 brush rod, 5 bristles, 6 vertical rod, 7 horizontal rod, 8 one-way bearing, 9 drum, 10 blade, 11 block, 12 limit chute , 13 springs, 14 limit sliders.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

1-4, a backwash structure of an explosion-proof sand pump includes a connecting shaft 1 connected to the bottom end of the impeller shaft of the sand pump and a ring plate 3 fixedly installed on the inner wall of the base of the sand pump. The connecting shaft 1 is sleeved A one-way bearing 8 is connected, a rotating drum 9 is sleeved on the one-way bearing 8, a blade 10 is fixedly connected to the side wall of the rotating drum 9, and a cross bar 7 is fixedly connected to the lower end of the rotating drum 9. There are two cleaning mechanisms. The two cleaning mechanisms are symmetrically arranged. The lower end surface of the ring plate 3 is fixedly connected with a plurality of abutting blocks 11 corresponding to the cleaning mechanism at equal intervals along its circumferential direction. The lower end surface of the abutting blocks 11 is an arc structure.

In the present invention, the cleaning mechanism includes a vertical rod 6 fixedly connected to the upper end of the horizontal rod 7, a limit chute 12 is provided on the side wall of the vertical rod 6, and a limit slide that can move up and down is slidably connected in the limit chute 12. Block 14, a brush rod 4 is fixedly connected to the side wall of the limit slider 14, and the side wall of the brush rod 4 is evenly distributed with bristles 5. The bristles 5 can be made of stainless steel wire and are curved, and the bristles 5 are connected to the base of the sand pump. The inner wall is in contact, the lower end of the brush rod 4 is fixedly connected to the spring 13 , the lower end of the spring 13 is fixedly connected to the cross bar 7 , and the position of the abutting block 11 corresponds to the position of the brush rod 4 .

Specifically, the blade 10 and the drum 9 are integrally formed, and the structural strength is very good.

Specifically, the cross-sections of the limit chute 12 and the limit slider 14 are T-shaped structures adapted to each other.

Specifically, a rotary sealing ring is provided at the rotating part of the connecting shaft 1 and the rotating drum 9 to realize rotary sealing and avoid sand entering.

When the utility model is in use, when the impeller shaft of the sand pump rotates normally, the one-way bearing 8 is arranged so that the connecting shaft 1 does not drive the rotating drum 9 to rotate, that is, the backwashing structure does not work, and the sand pump is not used. When the sand discharge operation is performed, the internal motor of the sand discharge pump is reversed, and the impeller shaft is driven to reverse, which can drive the rotating drum 9 to reverse, drive the horizontal rod 7 to rotate, and then drive the vertical rod 6 to rotate, and rotate with the vertical rod 6. When the upper end of the brush rod 4 rotates until the lower end surface of the abutment block 11 is in contact, the vertical rod 4 can be moved downward by being pressed by the abutment block 11. When the brush rod 4 is rotated away from the abutment block 11, the spring 13 can make the brush rod 4 move up and reset. , As the brush rod 4 rotates and moves up and down, the inner wall of the base can be cleaned by the bristles 5 on the upper end of the vertical rod 4, especially the sand inlet holes on the base are cleaned and blocked, and the rotating drum 9 can drive the blades 10. Rotate, so that the water inside the base rotates, which plays the role of flushing.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The technical solution and its utility model concept are equivalently replaced or changed, and should be covered within the protection scope of the present utility model.

Claims (5)

1. An explosion-proof sand pump backwash structure, characterized in that it comprises a connecting shaft (1) connected to the bottom end of the sand pump impeller shaft and a ring plate (3) fixedly installed on the inner wall of the sand pump base, so A one-way bearing (8) is sleeved on the connecting shaft (1), a rotating drum (9) is sleeved on the one-way bearing (8), and a blade (9) is fixedly connected to the side wall of the rotating drum (9). 10), the lower end of the rotating drum (9) is fixedly connected with a cross bar (7), the cross bar (7) is provided with two cleaning mechanisms, the two cleaning mechanisms are symmetrically arranged, and the ring plate ( 3) A plurality of abutting blocks (11) corresponding to the cleaning mechanism are fixedly connected along the circumferential direction of the lower end surface at equal intervals, and the lower end surface of the abutting blocks (11) is an arc structure. 2. The backwash structure of an explosion-proof sand pump according to claim 1, wherein the cleaning mechanism comprises a vertical rod (6) fixedly connected to the upper end of the cross rod (7), and the vertical rod ( 6) A limit chute (12) is provided on the side wall, and a limit slider (14) that can move up and down is slidably connected in the limit chute (12). A brush rod (4) is fixedly connected to the side wall, bristles (5) are evenly distributed on the side wall of the brush rod (4), and the bristles (5) are in contact with the inner wall of the base of the sand pump, and the brush rod (4) A spring (13) is fixedly connected to the lower end of the spring (13), the lower end of the spring (13) is fixedly connected to the crossbar (7), and the position of the abutment block (11) corresponds to the position of the brush rod (4). 3 . The backwash structure of an explosion-proof sand discharge pump according to claim 1 , wherein the vane ( 10 ) and the rotating drum ( 9 ) are integrally formed. 4 . 4. The backwash structure of an explosion-proof sand pump according to claim 2, characterized in that the cross-sections of the limit chute (12) and the limit slider (14) are mutually compatible T type structure. 5 . The backwash structure of an explosion-proof sand discharge pump according to claim 1 , characterized in that a rotary sealing ring is provided at the place where the connecting shaft ( 1 ) rotates with the rotating drum ( 9 ). 6 .

Images