TWI705191B - Explosion-proof vertical pump - Google Patents

Abstract

An explosion-proof vertical pump includes a power unit, a housing unit and a cover. The power unit includes a motor body, a rotating shaft and an impeller fixed on the rotating shaft. The housing unit includes a cylinder connected to the motor body and a pumping seat connected to the cylinder. The pumping seat has an inner peripheral surface, an outer peripheral surface and one end surface, and the inner peripheral surface has an inner surface. Thread, the cover is fixed on the drain seat, and includes an inner boss screwed on the inner thread, an outer ring wall surrounding the inner boss, and an intersecting connection to the inner boss The end wall between the outer ring wall and the outer ring wall is airtight and bound to the outside of the outer peripheral surface, and the end wall abuts against the end surface. The design of the cover can achieve the purpose of explosion-proof cracking.

Description

Explosion-proof vertical pump

The invention relates to a pump for transporting fluids, in particular to an explosion-proof vertical pump for pumping chemical liquids.

There is a vertical pump (the prior art in the patent case of Taiwan Certificate No. M354003), which includes a body, a connecting seat fixed on the top of the body, an impeller with a shaft arranged inside the body, and a A motor on the connecting seat and used for driving the impeller to rotate, an upper cover set inside the body, and a C-shaped buckle ring buckled on the body and providing axial positioning of the upper cover relative to the body.

When the impeller has been installed and positioned in an inner hole of the body, the upper cover is sleeved in the inner hole and located at the bottom of the impeller, and the C-shaped buckle is embedded in a ring groove of the body to make the upper cover Relative to the suction port at the bottom of the body, positioning is generated.

When the above-mentioned vertical pump pumps liquid, the impeller is used to throw the liquid out, and the output high pressure and the high temperature of the contact liquid, the diameter of the bottom of the main body is enlarged, and the horn shape appears. The longer the pump is used, the more serious the deformation of the peripheral wall of the suction port at the bottom of the body will be. When the running horsepower of the motor is increased or the pumping flow is increased, the upper cover will easily burst from the suction port, causing damage to the vertical pump. Not available.

Therefore, the purpose of the present invention is to provide an explosion-proof vertical pump that can solve the existing shortcomings.

Therefore, the explosion-proof vertical pump of the present invention includes a power unit, a housing unit and a cover. The power unit includes a motor body, a rotating shaft driven by the motor body and extending along an axis, and an impeller fixed on the rotating shaft, and the housing unit includes a hollow cylindrical tube connected to the motor body Part, and a pumping seat opposite to the motor body and connected to the cylinder, the cylinder has a chamber for the shaft to pass through, the pumping seat has a defining a communication with the chamber The inner peripheral surface of the pumping chamber, an outer peripheral surface opposite to the inner peripheral surface, and an end surface intersecting and connecting between the inner peripheral surface and the outer peripheral surface, the impeller is arranged in the pumping chamber, the inner peripheral The mask has an internal thread, the cover is fixed on the pumping seat of the housing unit, and includes an inner convex seat screwed in the pumping chamber, and an outer ring wall surrounding the inner convex seat , And an end wall intersectingly connected between the inner boss and the outer ring wall, the inner boss, the outer ring wall, and the end wall jointly define a groove for the pumping seat to be inserted into, the The inner boss has an outer ring surface adjacent to the groove, and an outer thread arranged on the outer ring surface and screwed to the inner thread. The outer ring wall is bound to the outside of the outer circumferential surface, and the end wall abuts Lean on the end face.

The effect of the present invention is that the inner convex seat of the cover is screwed in the water pumping chamber, and the outer ring wall surrounds the water pumping seat, even if the running horsepower of the motor body is increased or the pumping However, the outer ring wall is bound to the outside of the outer circumferential surface to prevent the pumping seat from expanding and deforming, preventing the cover from bursting from the pumping chamber, and prolonging the service life of the vertical pump.

1 and 2, an embodiment of the explosion-proof vertical pump of the present invention includes a power unit 10, a housing unit 20, a cover 30, a first leak-proof ring 40 and a second leak-proof ring 50.

The power unit 10 includes a mounting base 11, a motor body 12 fixed to the mounting base 11, a rotating shaft 13 driven by the motor body 13 and extending along an axis L, and a fixed shaft opposite to the motor body 12 The impeller 14 at the end of the rotating shaft 13.

The housing unit 20 includes a hollow cylindrical cylindrical member 21 connected to the motor body 12 through the mounting seat 11, and a suction seat opposite to the motor body 12 and integrally connected to the cylindrical member 21 22, and a discharge pipe 23 connected to the drain base 22. The cylinder 21 has a chamber 211 for the shaft 13 to pass through, the pumping seat 22 has an inner peripheral surface 222 that can define a pumping chamber 221 communicating with the chamber 211, and a surface opposite to the pumping chamber 221. The outer circumferential surface 223 of the inner circumferential surface 222, and an end surface 224 intersecting and connecting between the inner circumferential surface 222 and the outer circumferential surface 223, the impeller 14 is disposed in the pumping chamber 221, and the inner circumferential surface 222 has an internal thread 225. The outer peripheral surface 223 has a first ring groove 226, and the end surface 224 has a second ring groove 227. The discharge pipe 23 is connected to the pumping chamber 221.

The cover 30 is made of engineering plastics (this embodiment can be made of engineering plastic materials with acid and alkali resistance, such as PP, GFRPP, PVDF, CFRETFE, etc.), and is fixed on the water drain of the housing unit 20 The seat 22 includes an inner boss 31 screwed in the draining chamber 221, an outer ring wall 32 surrounding the inner boss 31, and an intersecting connection between the inner boss 31 and the outer The end wall 33 between the ring walls 32, the inner boss 31, the outer ring wall 32, and the end wall 33 together define a groove 34 for the pumping seat 22 to be inserted into, the inner boss 31 has a The outer ring surface 311 adjacent to the groove 34, an outer thread 312 provided on the outer ring surface 311 and screwed to the inner thread 225, and a suction port 313 arranged along the axis L, the outer ring wall 32 is airtight and bound to the outside of the outer peripheral surface 223, and the end wall 33 abuts against the end surface 224 in an airtight manner. With reference to FIG. 3, the inner convex seat 31 also has a top plane 314, a bottom plane 315 opposite to the top plane 314, a majority of recessed portions 316 recessed by the bottom plane 315, and two adjacent recessed portions 316 A reinforcing rib 317 is formed between each.

The first anti-leakage ring 40 is installed in the first ring groove 226 and is airtight against the outer ring wall 32.

The second anti-leak ring 50 is installed in the second ring groove 227 and is airtight against the end wall 33.

In order to further understand the effects of the cooperation of the various elements of the present invention, the technical means used, and the expected effects, the following will be explained again, and it is believed that a deeper and specific understanding of the present invention can be obtained from this.

As shown in Figures 1 and 2, when the explosion-proof vertical pump of the present invention is assembled as a whole, the power unit 10 and the housing unit 20 are firmly combined, and the impeller 14 is also fixed on the rotating shaft 13, and Located in the water drawing chamber 221. The cover 30 is screwed to the internal thread 225 by using the external thread 312, and can be firmly combined with the drain seat 22.

When the motor body 12 of the power unit 10 starts and drives the rotating shaft 13 and the impeller 14 to operate, the impeller 14 is used to sling the chemical liquid introduced from the suction port 313 out of the discharge pipe 23 and reach the chemical medicine. Liquid pumping purpose.

When pumping chemical liquids, the inner boss 31 of the cover 30 is screwed into the pumping chamber 221, and the outer ring wall 32 surrounds the pumping seat 22, even if the motor The running horsepower of the main body 12 is increased or the pumping flow rate is increased, but the outer ring wall 32 is bound to the outer peripheral surface 223 to prevent the peripheral wall of the water pumping seat 22 from expanding and deforming, and to prevent the cover 30 from being The open end of the suction chamber 221 bursts open, which can prolong the service life of the vertical pump.

Therefore, the cover 30 of the present invention uses the inner convex seat 31, the outer ring wall 32 and the end wall 33 to form a U-shaped cross-sectional structure. When the vertical pump is high pressure and high temperature, it can effectively generate tension resistance and avoid the casing of the vertical pump. The seat unit 20 is deformed.

Furthermore, the first leak-proof element 40 is arranged in the first ring groove 226 and the outer ring wall 32 abuts airtightly, and the second leak-proof ring 50 is installed in the second ring groove 227 In addition, the air-tight abutment of the end wall 33 can produce multiple anti-leakage effects. And even though the peripheral wall of the water pumping seat 22 may expand and deform outwardly, the arrangement of the first leak-proof element 40 will make the water tightness better.

In addition, the cover 30 is provided with the recessed portions 316 to reduce the weight, and the reinforcing ribs 317 can strengthen the structural strength of the inner convex seat 31 and effectively prevent the inner convex seat 31 from being deformed.

In summary, the explosion-proof vertical pump of the present invention has a simple overall structure, easy manufacture and assembly, and can effectively prevent the housing unit from bursting, which can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

10: Power unit 11: Mounting seat 12: Motor body 13: shaft 14: Impeller 20: Housing unit 21: Tube 211: Room 22: Water Block 221: Water Room 222: inner peripheral surface 223: outer peripheral surface 224: end face 225: Internal thread 226: first ring groove 227: second ring groove 23: discharge pipe 30: capping 31: Inner boss 311: Outer Ring 312: External thread 313: suction port 314: Top Plane 315: bottom plane 316: sunken part 317: Reinforcement Rib 32: Outer ring wall 33: end wall 34: Groove 40: The first leakproof ring 50: The second anti-leak ring L: axis

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a combined sectional view of an embodiment of the explosion-proof vertical pump of the present invention; Figure 2 is a partial enlarged schematic view of Figure 1; and Fig. 3 is a bottom view of a three-dimensional assembly of the embodiment.

10: Power unit

11: Mounting seat

12: Motor body

13: shaft

14: Impeller

20: Housing unit

21: Tube

211: Room

22: Water Block

225: Internal thread

226: first ring groove

227: second ring groove

23: discharge pipe

30: capping

31: Inner boss

312: External thread

32: Outer ring wall

33: end wall

221: Water Room

222: inner peripheral surface

223: outer peripheral surface

224: end face

34: Groove

40: The first leakproof ring

50: The second anti-leak ring

L: axis

Claims (4)

An explosion-proof vertical pump, including: A power unit, including a motor body, a rotating shaft driven by the motor body and extending along an axis, and an impeller fixed on the rotating shaft; A housing unit includes a hollow cylindrical cylindrical member connected to the motor body, and a suction seat opposite to the motor body and connected to the cylindrical member. The cylindrical member has a shaft through which the shaft passes A chamber, the pumping seat has an inner peripheral surface that can define a pumping chamber communicating with the chamber, an outer peripheral surface opposite to the inner peripheral surface, and an intersecting connection between the inner peripheral surface and the At the end face between the outer peripheral surfaces, the impeller is arranged in the pumping chamber, and the inner peripheral surface has an internal thread; and A cover, fixed on the pumping seat of the housing unit, and including an inner boss screwed in the pumping chamber, an outer ring wall surrounding the inner boss, and an intersecting connection On the end wall between the inner boss and the outer ring wall, the inner boss, the outer ring wall, and the end wall jointly define a groove for the water pumping seat to be sleeved, and the inner boss has a The outer ring surface adjacent to the groove, and an outer thread arranged on the outer ring surface and screwed to the internal thread, the outer ring wall is airtight and bound to the outside of the outer circumferential surface, and the end wall abuts The end face. The explosion-proof vertical pump according to claim 1, wherein the outer peripheral surface of the suction seat of the housing unit has a first ring groove, and the explosion-proof vertical pump further includes a first ring groove And the first leak-proof ring for the outer ring wall to abut against airtightly. The explosion-proof vertical pump according to claim 2, wherein the end face of the suction seat of the housing unit has a second annular groove, and the explosion-proof vertical pump further includes a second annular groove and The second leak-proof ring for the end wall to abut against airtightly. The explosion-proof vertical pump according to claim 1, wherein the inner convex seat of the cover also has a top plane, a bottom plane opposite to the top plane, and a majority of recessed portions recessed by the bottom plane A reinforcing rib is formed between the two adjacent sunken parts.

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