CN213684554U

CN213684554U - Back-flushing type explosion-proof sand discharge pump

Info

Publication number: CN213684554U
Application number: CN202022273497.8U
Authority: CN
Inventors: 张向泽
Original assignee: Hangzhou Texby Pump Co ltd
Current assignee: Hangzhou Texby Pump Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-07-13
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses a backwash formula flame proof sediment outflow pump belongs to flame proof sediment outflow pump technical field, include the base and locate the pump body on the base, pump body below is equipped with the connecting axle that links firmly with sediment outflow pump impeller shaft bottom, the one-way bearing has been cup jointed on the connecting axle, the one-way bearing outside has linked firmly the rotary drum, the back flush blade has been linked firmly on the rotary drum lateral wall, connect through a plurality of bracing pieces between the base and the pump body, be equipped with the protection casing between the base and the pump body, evenly be equipped with a plurality of through-holes on the protection casing, be equipped with on the pump body and be used for driving the relative bracing piece of protection casing gliding drive structure. To the inside long-pending husky technical problem of clearance of being not convenient for of explosion proof sand discharge pump among the prior art, the utility model provides a back flush type explosion proof sand discharge pump, it can arrange the husky operation back again and realize the clearance through the mode of back flush to inside long-pending husky.

Description

Back-flushing type explosion-proof sand discharge pump

Technical Field

The utility model relates to a sand pump technical field is arranged to the flame proof, concretely relates to sand pump is arranged to back flush formula flame proof.

Background

The explosion-proof submersible sand pump is suitable for industrial departments of coal mine, metallurgy, electric power, building materials and the like, has gas, flammable and explosive places, and is used for conveying mixed sewage containing suspended solid particles such as silt, coal slag, fibers and the like or liquid with certain corrosiveness. The pump has the functions of explosion suppression, wear resistance and corrosion resistance, and the main structure of the pump comprises a base, a motor, an impeller and the like.

However, after the base of the explosion-proof sand discharge pump is used for sand discharge operation, sand can accumulate in the base, and particularly blockage is caused in a sand inlet hole of the base, so that normal sand feeding is influenced, and normal sand discharge operation is influenced.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

To the inside long-pending husky technical problem of clearance of being not convenient for of explosion proof sand discharge pump among the prior art, the utility model provides a back flush type explosion proof sand discharge pump, it can arrange the husky operation back again and realize the clearance through the mode of back flush to inside long-pending husky.

2. Technical scheme

In order to solve the above problem, the utility model provides a technical scheme does:

a back-flushing type explosion-proof sand discharge pump comprises a base and a pump body arranged on the base, wherein a connecting shaft fixedly connected with the bottom end of a sand discharge pump impeller shaft is arranged below the pump body, a one-way bearing is sleeved on the connecting shaft, a rotary drum is fixedly connected to the outer side of the one-way bearing, back-flushing blades are fixedly connected to the side wall of the rotary drum, the base is connected with the pump body through a plurality of supporting rods, a protective cover is arranged between the base and the pump body, a plurality of through holes are uniformly formed in the protective cover, and a driving structure for driving the protective cover to slide up and down relative to; compared with the traditional backwashing structure, when the pump body normally works, the protective cover can effectively prevent external garbage from entering the pump body, when the pump body is backwashed, the protective cover is lifted upwards and cannot influence the discharge of accumulated sand on the base, so that the backwashing efficiency is improved, and meanwhile, when the pump body is backwashed, the protective cover is positioned above the backwashing blades, so that the garbage entering along with water flow when the backwashing blades suck water flow can be prevented from influencing the rotating efficiency of the backwashing blades.

Optionally, two adjacent be connected with the anchor strut between the bracing piece, be equipped with scraping portion on the lateral wall of anchor strut, scraping portion and protection casing inner wall are laminated mutually.

Optionally, the drive structure includes a drive part of rotatable coupling in protection casing top and a plurality of action bars that set up along the drive part circumferencial direction, drive part inner wall and pump body outer wall threaded connection, connect through anti-disengaging structure between drive part and the protection casing, protection casing and bracing piece are preceding to be connected through the structure of splining.

Optionally, the anti-disengaging structure includes an anti-disengaging part arranged on the lower end face of the driving part, the anti-disengaging part is arranged around the circumferential direction of the driving part, and an anti-disengaging groove matched with the anti-disengaging part is arranged at the top of the protective cover.

Optionally, the section of the anti-dropping part is in a T shape.

Optionally, the rotation stopping structure comprises a plurality of rotation stopping portions arranged on the inner wall of the protective cover, and rotation stopping grooves matched with the rotation stopping portions are formed in the supporting rods.

Optionally, the rotation stopping part is T-shaped in cross section.

Optionally, the scraping portion is made of butyl rubber.

Optionally, the bowl and backwash vanes are integrally formed.

Optionally, a rotary sealing ring is arranged at the joint of the connecting shaft and the rotary drum.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) compared with the traditional backwashing structure, when the pump body normally works, the protective cover can effectively prevent external garbage from entering the pump body, when the pump body is backwashed, the protective cover is lifted upwards and cannot influence the discharge of accumulated sand on the base, so that the backwashing efficiency is improved, and meanwhile, when the pump body is backwashed, the protective cover is positioned above the backwashing blades, so that the garbage entering along with water flow when the backwashing blades suck water flow can be prevented from influencing the rotating efficiency of the backwashing blades;

(2) the driving structure adopts a threaded structure, so that the protective cover is more convenient and labor-saving when being manually controlled to move upwards, and meanwhile, the design of the driving piece is reduced, thereby being beneficial to reducing the overall weight of the sand pump and reducing the possibility of damage of the sand pump;

(3) due to the arrangement of the scraping part, when the protective cover slides upwards, sand adhered to the inner wall of the protective cover can be scraped off by the scraping part, so that the inner wall of the protective cover can be cleaned;

drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a first schematic cross-sectional view of the present invention;

FIG. 3 is a partial schematic view of FIG. 2 at A;

fig. 4 is a schematic cross-sectional view of the present invention.

1. A base; 2. a pump body; 3. a connecting shaft; 4. a one-way bearing; 5. a rotating drum; 6. backwashing the blades; 7. a support bar; 71. a reinforcing rod; 72. a rotation stopping groove; 8. a protective cover; 81. a through hole; 82. a rotation stop section; 9. a drive structure; 91. a drive section; 92. an operating lever; 10. an anti-drop part; 11. and (4) an anti-drop groove.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings 1-4 and the accompanying examples.

Example 1

With reference to fig. 1-4, the back-flushing type flameproof sand pump of this embodiment includes base 1 and locates the pump body 2 on base 1, pump body 2 below is equipped with the connecting axle 3 that links firmly with row's sand pump impeller shaft bottom, one-way bearing 4 has been cup jointed on connecting axle 3, the one-way bearing 4 outside has linked firmly rotary drum 5, and the lower extreme of rotary drum 5 passes through the bearing and is connected with base 1 rotation, back-flushing blade 6 has been linked firmly on the rotary drum 5 lateral wall, connect through four vertical bracing pieces 7 between base 1 and the pump body 2, be equipped with protection casing 8 between base 1 and the pump body 2, protection casing 8 covers and locates the bracing piece 7 outside, evenly be equipped with a plurality of through-holes 81 on the protection casing 8, be equipped with on the pump body 2 and be used for driving protection casing 8 gliding drive structure.

When the impeller shaft of the sand discharge pump normally works in a forward rotation mode, the one-way bearing 4 is arranged, so that the connecting shaft 3 does not drive the rotary drum to rotate, namely the backwashing structure does not work, when the sand discharge pump does not finish sand discharge operation, the motor in the sand discharge pump is driven to rotate reversely, the impeller shaft is driven to rotate reversely, the rotary drum 5 can be driven to rotate reversely, so that the backwashing blades 6 on the rotary drum 5 are driven to rotate synchronously to generate downward impact water flow, in the utility model, when backwashing is carried out, the protective cover 8 can be lifted upwards under the action of the driving structure until the lower end surface of the protective cover is level with the height of the backwashing blades 6, at the moment, when the backwashing blades 6 rotate, external water flow enters through the through holes and impacts downwards under the driving of the backwashing blades 6, and because the lower part of the protective cover 8 is separated from the base, the water flow flows outwards from the side edges after impacting on the base 1, compared with the traditional backwashing structure, when the pump body 2 works normally, the protective cover 8 can effectively prevent external garbage from entering the pump body 2, when backwashing is carried out, the protective cover 8 is lifted upwards and cannot influence the discharge of accumulated sand on the base 1, so that the backwashing efficiency is improved, and meanwhile, when backwashing is carried out, the protective cover 8 is positioned above the backwashing blades 6, so that the garbage entering along with water flow when the backwashing blades 6 suck water flow can be prevented from influencing the rotating efficiency of the backwashing blades 6.

Example 2

With reference to fig. 1-4, the back-flushing type flameproof sand pump of this embodiment is compared with embodiment 1, and is adjacent two be connected with stiffener 71 between the bracing piece 7, be equipped with scraping portion on stiffener 71's the lateral wall, scraping portion and 8 inner walls of protection casing are laminated mutually.

The setting of anchor strut 71 makes the joint strength between the bracing piece 7 improve, and is higher to the support stability of the pump body 2, strikes off the setting of portion simultaneously for when 8 lapse of protection casing, the grains of sand of adhesion can be scraped off by portion of striking off on the 8 inner walls of protection casing, thereby realizes the clearance to the protection casing inner wall.

In this embodiment, the scraping portion is made of butyl rubber, and the scraping portion made of butyl rubber has excellent wear resistance while ensuring the cleaning effect on the inner wall of the protective cover 8, thereby being beneficial to prolonging the service life of the scraping portion and ensuring the cleaning effect after long-time use.

Example 3

With reference to fig. 1-4, the back-flushing type flameproof sand pump of this embodiment, compare with

embodiment

1 or 2, drive structure 9 includes drive division 91 of rotatable coupling in 8 tops of protection casing and a plurality of action bars 92 that set up along drive division 91 circumferencial direction, and in this embodiment, drive division 91 is an annular structure that surrounds setting in the outer wall of the pump body 2, is equipped with the internal thread on this drive division 91, is equipped with rather than matched with external screw thread along its direction of height on the outer wall of the pump body 2, drive division 91 inner wall and the outer wall threaded connection of the pump body 2, connect through anti-disengaging structure between drive division 91 and the protection casing 8, connect through the structure of stalling before protection casing 8 and bracing piece 7.

When the hood 8 needs to be lifted, an operator can control the driving portion 91 to rotate relative to the pump body 2 through the operating lever 92, and due to the engagement of the internal thread and the external thread, when the driving portion 91 rotates, the driving portion 91 can act upwards under the action of the thread structure, and in connection with the driving portion 91 and the hood 8 through the anti-disengaging structure, the driving portion 91 can drive the hood 8 upwards together to achieve the purpose of lifting the hood 8.

Example 4

With reference to fig. 1-4, the back-flushing type flameproof sand pump of this embodiment is compared with any one of embodiments 1-3, and the anti-disengaging structure includes an anti-disengaging portion 10 disposed on the lower end surface of the driving portion 91, the anti-disengaging portion 10 is disposed around the driving portion 91 in the circumferential direction, and the top of the protection cover 8 is provided with an anti-disengaging groove 11 matched with the anti-disengaging portion 10.

The retaining part 10 can rotate in the retaining groove 11, and when the retaining part 10 moves upward along with the driving part 91, the retaining part 10 will drive the protection cover 8 to move upward together due to the retaining fit between the retaining part 10 and the retaining groove 11.

In this embodiment, in order to improve the anti-separation matching effect between the anti-separation part 10 and the anti-separation groove 11, the cross section of the anti-separation part 10 is "T" shaped.

Example 5

With reference to fig. 1-4, compared with any one of embodiments 1-4, the back-flush type flameproof sand pump of this embodiment has the advantages that the rotation stopping structure includes a plurality of rotation stopping portions 82 disposed on the inner wall of the protective cover 8, the supporting rod 7 is provided with the rotation stopping groove 72 matched with the rotation stopping portions 82, the rotation stopping groove 72 extends along the height direction of the supporting rod 7, and the rotation stopping portions 82 can move up and down in the rotation stopping groove 72.

Adopt above-mentioned structural design for can not relative bracing piece 7 when the protection casing 8 moves from top to bottom rotate, have certain joint strength through the cooperation of rotation stopping portion 82 and rotation stopping groove 72 between protection casing 8 and the bracing piece 7, be difficult for producing too much collision between the two when water pump 2 during operation.

In the present embodiment, the rotation preventing portion 82 has a T-shaped cross section for the purpose of improving the separation between the rotation preventing portion 82 and the rotation stopping groove 72.

Example 6

With reference to fig. 1-4, compared with any one of embodiments 1-5, the back-flushing type explosion-proof sand discharge pump of the present embodiment has the structure that the rotating cylinder 5 and the back-flushing blades 6 are integrally formed.

The rotary drum 5 and the back washing blades 6 have better connection strength, the rotary drum 5 drives the back washing blades 6 to rotate, and the impact force generated by water flow can be ensured to be enough to clean accumulated sand on the base 1.

Example 7

With reference to fig. 1-4, compared with any one of embodiments 1-6, the back-flushing type flameproof sand pump of this embodiment has a rotary seal ring at the connection between the connection shaft 3 and the rotary drum 5, and the rotary seal ring is in the prior art and therefore not described herein.

The rotary sealing ring can realize the rotary sealing of the rotating part of the connecting shaft 3 and the rotating drum 5, avoid sand feeding and ensure the rotating smoothness.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A back flush type explosion-proof sand discharge pump is characterized in that: including base (1) and locate pump body (2) on base (1), pump body (2) below is equipped with connecting axle (3) that link firmly with row's husky pump impeller shaft bottom, one-way bearing (4) have been cup jointed on connecting axle (3), one-way bearing (4) outside has linked firmly rotary drum (5), back flush blade (6) have been linked firmly on rotary drum (5) lateral wall, connect through a plurality of bracing pieces (7) between base (1) and the pump body (2), be equipped with protection casing (8) between base (1) and the pump body (2), evenly be equipped with a plurality of through-holes (81) on protection casing (8), be equipped with on the pump body (2) and be used for driving protection casing (8) relative bracing piece (7) gliding drive structure (9) from top to bottom.

2. The back flushing type explosion-proof sand discharge pump according to claim 1, characterized in that: two adjacent be connected with stiffener (71) between bracing piece (7), be equipped with on the lateral wall of stiffener (71) and strike off the portion, strike off the portion and laminate mutually with protection casing (8) inner wall.

3. The back flushing type explosion-proof sand discharge pump according to claim 1, characterized in that: drive structure (9) include rotatable coupling in drive division (91) at protection casing (8) top and a plurality of action bars (92) that set up along drive division (91) circumferencial direction, drive division (91) inner wall and the pump body (2) outer wall threaded connection, connect through anticreep structural connection between drive division (91) and protection casing (8), connect through the structure of splining before protection casing (8) and bracing piece (7).

4. The back flushing type explosion-proof sand discharge pump according to claim 3, characterized in that: anti-disengaging structure is including locating anticreep portion (10) on drive division (91) lower terminal surface, anticreep portion (10) encircle in drive division (91) circumferencial direction setting, protection casing (8) top is equipped with and anticreep portion (10) matched with anticreep groove (11).

5. The back flushing type explosion-proof sand discharge pump according to claim 4, characterized in that: the section of the anti-falling part (10) is T-shaped.

6. The back flushing type explosion-proof sand discharge pump according to claim 3, characterized in that: the rotation stopping structure comprises a plurality of rotation stopping parts (82) arranged on the inner wall of the protective cover (8), and rotation stopping grooves (72) matched with the rotation stopping parts (82) are formed in the supporting rod (7).

7. The back flushing type explosion-proof sand discharge pump according to claim 6, characterized in that: the section of the rotation stopping part (82) is T-shaped.

8. The back flushing type explosion-proof sand discharge pump according to claim 2, characterized in that: the scraping part is made of butyl rubber.

9. The back flushing type explosion-proof sand discharge pump according to claim 1, characterized in that: the rotating cylinder (5) and the back washing blades (6) are integrally formed.

10. The back flushing type explosion-proof sand discharge pump according to claim 1, characterized in that: and a rotary sealing ring is arranged at the joint of the connecting shaft (3) and the rotary drum (5).