TWI658207B - Upright pump that blocks corrosive gases - Google Patents

Abstract

An upright pump capable of preventing corrosive gas includes a motor unit, a casing unit, a leakage blocking unit and an impeller. The motor unit includes a motor body, a shaft center, and a positioning surface. The housing unit includes a cylinder piece connected to the motor unit and a water suction seat fixed to the bottom of the cylinder piece. The leakage blocking unit has a A wear part and a lock part, the wear part is made of a wear-resistant material and air-tightly abuts against the positioning surface, the lock part is detachably fixed to the shaft center and provides the abrasion part to keep the air-tight abut On the positioning surface, the locking member is hermetically abutted against the wear-resistant member. By using the arrangement of the leakage blocking unit, highly acidic or alkaline chemical gas can be prevented from penetrating into the motor body, and the service life of the motor unit can be extended.

Description

Upright pump that blocks corrosive gases

The present invention relates to a pump for transporting fluids, and particularly to an upright pump capable of preventing corrosive gases.

Vertical pumps are widely used to transport chemical liquids with high acidity or alkalinity, such as Taiwan Patent Publication No. 551425, which includes a motor unit, a body cover connected to the motor unit, and a motor unit The drive generates a moving blade and a water delivery seat connected to the bottom of the body cover. The motor group has a shaft center and a shaft sleeve provided outside the shaft center. A shaft cover ring is provided between the motor group and the body cover, and a ceramic ring is provided inside the shaft cover ring. The shaft sleeves on the upper and lower sides of the ceramic ring are respectively nested with upper and lower shaft seals.

Although the use of the ceramic ring with the upper and lower shaft seals can prevent the medicine gas from overflowing and eroding the internal components of the upper motor unit, when the motor unit is running, the upper and lower shaft seals located on the upper and lower sides of the ceramic ring, It will be in friction with the ceramic ring, which may cause wear and tear when used for a period of time, and affect the leakage prevention effect. The upper and lower shaft seals must be replaced regularly, which is not convenient to use.

It is therefore an object of the present invention to provide an upright pump that can prevent corrosive gases from prolonging its service life.

Therefore, the upright pump capable of preventing corrosive gas according to the present invention includes a motor unit, a casing unit, a leakage blocking unit and an impeller. The motor unit includes a motor body, an axis center extending downward from the motor body and extending along an axis, and a positioning surface adjacent to the motor body and intersecting the axis. The casing unit includes a hollow tube-shaped tube connected to the motor unit, and a water suction seat fixed to the bottom of the tube. The tube includes a container for the shaft to pass through. The water-pumping seat has a water-pumping chamber which is communicated with the receiving chamber. The leakage blocking unit includes a wear-resistant component and a locking component. The wear-resistant component is made of wear-resistant material and is disposed in the container. In contrast to the second end surface of the first end surface, and a through hole communicating with the first and second end surfaces and passing through the shaft center, the locking member is detachably fixed to the shaft center and disposed in the container chamber, and The first end surface of the wear-resistant component and the positioning surface are kept airtight against each other. The locking component includes a top surface that is airtight against the second end surface, a bottom surface opposite to the top surface along the axis, and a continuous A shaft hole passing through the top surface and the bottom surface and passing through the shaft center. The impeller is connected to the shaft center and is accommodated in the pumping chamber.

The effect of the present invention is that the wear-resistant component is made of a wear-resistant material, and the wear-resistant component is used to keep the airtight abutting against the positioning surface, and the locking member is used to air-tightly abut the second end surface , Can prevent the high acid or overly alkaline chemical gas from leaking upwards to ensure that the service life of the motor unit is extended.

Referring to FIG. 1, FIG. 2 and FIG. 3, an embodiment of an upright pump capable of preventing corrosive gas according to the present invention includes a motor unit 10, a housing unit 20, a leakage blocking unit 30, an oil seal 40 and an impeller. 50.

The motor unit 10 includes a motor body 11, a shaft center 12 extending downward from the motor body 11 and extending along an axis L, and a positioning frame member 13 fixed to the motor body 11 and passing through the shaft center 12. An exhaust wheel 14 disposed inside the positioning frame member 13 and fixed to the shaft center 12, and a leak-proof ring 15.

The positioning frame member 13 has an upper plate 131 abutting against the motor body 11, a lower plate 132 spaced apart from the upper plate 131 along the axis L, and most of the connecting plates are connected to the upper plate 131 and the lower plate 132. Connecting ribs 133, the lower plate 132 has an upper side 134 opposite to the exhaust wheel 14, a positioning surface 135 opposite to the upper side 134 along the axis L and perpendicularly intersecting the axis L, A counterbore 136 recessed from the upper side 134 toward the positioning surface 135 and a through hole 137 communicating with the counterbore 136 by the positioning surface 135 and having a smaller diameter than the counterbore 136, the counterbore 136 and the through hole 137 are provided for the shaft Heart 12 wears. The positioning surface 135 is polished.

The housing unit 20 includes a cylindrical member 21 connected to the lower plate 132 of the positioning frame member 13 and having a hollow cylindrical shape, and a water suction seat 22 fixed to the bottom of the cylindrical member 21. The cylindrical member 21 has a A receiving chamber 211 for the shaft center 12 to pass through, and the water drawing seat 22 has a water drawing chamber 221 communicating with the receiving chamber 211. The leakage prevention ring 15 is installed between the lower plate 132 and the top of the cylindrical member 21.

The leakage blocking unit 30 includes a wear-resistant member 31, a locking member 32, and a leak-proof ring 33. The wear-resistant component 31 is made of wear-resistant material. This embodiment is made of Teflon [Polytetrafluoroethylene (PTFE)] and is disposed in the chamber 211. The wear-resistant component 31 includes a gas A first end surface 311 closely abuts against the positioning surface 135, a second end surface 312 opposite to the first end surface 311 along the axis L, and a shaft connecting the first end surface 311 and the second end surface 312 for the shaft The heart 12 penetrates through holes 313. The locking member 32 is detachably fixed to the shaft center 12 and is disposed in the accommodating chamber 211, and the first end surface 311 of the wear-resistant member 31 and the positioning surface 135 are kept airtight against each other. The locking member 32 includes A ring block 34 in the form of a hollow block, a set screw 35 for locking the ring block 34 to the shaft center 12, the ring ring 34 has a top surface 341 which abuts tightly against the second end surface 312, and The axis L is opposite to the bottom surface 342 of the top surface 341, a shaft hole 343 connecting the top surface 341 and the bottom surface 342, and passing through the shaft center 12, an inner ring surface 344 defining the shaft hole 343, a Opposite to the inner annular surface 344, an outer annular surface 345, and a screw hole 346 communicating from the outer annular surface 345 to the inner annular surface 344. The inner annular surface 344 has a leakage prevention ring adjacent to the top surface 341. 33 nested and positioned ring grooves 347, the leakproof ring 33 is installed between the ring sleeve 34 and the shaft center 12 and keeps the air tightness between the ring sleeve 34 and the shaft center 12. The top surface 341 of the ring sleeve 34 of the locking member 32 is polished, and the positioning screw 35 is screwed into the screw hole 346 to position the ring sleeve 34 relative to the mandrel 12.

The oil seal 40 is installed in the counterbore 136 and keeps the airtightness between the shaft center 12 and the lower plate 132.

The impeller 50 is connected to the shaft center 12 and is received in the pumping chamber 221.

In order to further understand the function, technical means, and expected effects of the components of the present invention, the operation mode of the present invention is described, and it is believed that the present invention will have a deeper and more specific understanding.

When assembling, first assemble the exhaust wheel 14 to the shaft center 12 and assemble the oil seal 40 into the counterbore 136 of the positioning frame member 13 before abutting the positioning frame member 13 against the motor On the main body 11, the shaft center 12 is penetrated in the oil seal 40. At this time, the motor unit 10 is disposed downward, and the wear-resistant member 31 and the locking member 32 of the leakage-blocking unit 30 are sequentially set on On the outside of the shaft center 12, the wear piece 31 is resisted against the lower plate 132 by the weight of the lock member 32, and then the lock member 32 is locked on the shaft center 12 by the set screw 35. The impeller 50 is locked at the end of the shaft center 12, and the two ends of the cylindrical member 21 are locked with the pumping seat 22 and the motor body 21 respectively, so as to achieve the assembling purpose.

When the assembly is completed, the top surface 341 and the positioning surface 135 of the collar 34 of the locking member 32 are polished and the material characteristics of the wear member 31 can ensure the collar 34 and the wear member. The contact surfaces between 31 and the lower plate 132, that is, the positioning surface 135 and the first end surface 311, and the top surface 341 and the second end surface 312 are in close contact with each other, so the airtightness can be maintained.

As shown in FIG. 2 and FIG. 3 again, when in use, the motor unit 10 is disposed upward, and the leakage prevention unit 30 is disposed to prevent the medicinal gas pumped through the impeller 50 from overflowing and eroding the motor body 11 Internal components, but when the motor unit 10 is running, the wear resistance of the wear member 31 can also be used to avoid easy wear due to contact friction. The wear member 31 does not need to be replaced frequently, which is convenient to use.

In summary, the vertical pump capable of preventing corrosive gas has simple overall structure, easy manufacturing and assembly, and can prevent the overflow of medicinal gas, which can indeed achieve the purpose of the present invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.

10‧‧‧ Motor unit

11‧‧‧Motor body

L‧‧‧ axis

12‧‧‧ axis

13‧‧‧ Positioning frame

131‧‧‧on board

132‧‧‧ lower plate

133‧‧‧ connecting rib

134‧‧‧upper side

135‧‧‧positioning surface

136‧‧‧Sinkhole

137‧‧‧perforation

14‧‧‧Exhaust Wheel

15‧‧‧Leakproof ring

20‧‧‧Shell unit

21‧‧‧Cylinder

211‧‧‧capacity room

22‧‧‧ Drain

221‧‧‧Drawing Room

30‧‧‧Leakage Block

31‧‧‧ Wear-resistant parts

311‧‧‧first end face

312‧‧‧Second end face

313‧‧‧through hole

32‧‧‧Lock

33‧‧‧Leakproof ring

34‧‧‧Ring

341‧‧‧Top

342‧‧‧underside

343‧‧‧shaft hole

344‧‧‧Inner torus

345‧‧‧outer torus

346‧‧‧Screw hole

347‧‧‧Ring Groove

35‧‧‧ set screw

40‧‧‧oil seal

50‧‧‧ Impeller

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is an exploded perspective view of an embodiment of an upright pump capable of preventing corrosive gas according to the present invention; FIG. 2 is A combined sectional view of this embodiment; and FIG. 3 is a partially enlarged schematic view of FIG. 2.

Claims (6)

An upright pump capable of preventing corrosive gas includes a motor unit including a motor body, an axis center extending downward from the motor body and extending along an axis, and an adjacent motor body and intersects the motor body. Axis positioning surface; a housing unit, including a cylindrical member connected to the motor unit and having a hollow cylindrical shape, and a water suction seat fixed to the bottom of the cylindrical member, the cylindrical member having a shaft through A drain chamber is provided, and the pumping seat has a pumping chamber connected to the tank; a leakage blocking unit includes a wear-resistant member, a locking member and a leak-proof ring, and the wear-resistant member is made of wear-resistant material It is made and arranged in the container, and includes a first end face which is hermetically abutted against the positioning surface, a second end face that is opposite to the first end face along the axis, and a first end face that communicates with the first end face and two end faces. The through hole penetrating through the shaft center, the locking member is detachably fixed to the shaft center and disposed in the container, and the first end surface of the wear-resistant member and the positioning surface are kept airtight against each other. The locking member Including a ring block in the form of a hollow block, and a ring Axial positioning screw, the ring sleeve has a top surface which is hermetically abutted against the second end surface, a bottom surface opposite to the top surface along the axis, and a communication between the top surface and the bottom surface for the shaft center to pass through Provided with a shaft hole, the leak-proof ring is installed between the ring sleeve and the shaft center and keeps the airtightness between the ring sleeve and the shaft center; and an impeller connected to the shaft center and received in the sink Water chamber. The upright pump capable of preventing corrosive gas according to claim 1, wherein the wear-resistant part of the leakage prevention unit is made of Teflon material. The upright pump capable of preventing corrosive gas according to claim 1, wherein the motor unit further includes a positioning frame member fixed to the motor body, and a positioning frame member fixed inside the positioning frame member and fixed to the shaft Centered exhaust wheel, the positioning frame member has an upper plate abutting against the motor body, a lower plate spaced apart from the upper plate along the axis, and most of the connecting plates connected between the upper plate and the lower plate The connecting rib is provided on the lower plate. The upright pump capable of preventing corrosive gas according to claim 3, wherein the lower plate of the motor unit further has an opposite side to the positioning surface along the axis and opposite to the upper side of the exhaust wheel. A counterbore recessed on the upper side toward the positioning surface, and a perforation communicating with the counterbore from the positioning surface, the counterbore and the perforation are provided for the shaft center to pass through, and the vertical pump further includes a mounting on the An airtight oil seal is maintained between the shaft center and the lower plate in the counterbore. The upright pump capable of preventing corrosive gas according to claim 3, wherein the motor unit further includes a leak-proof ring installed between the lower plate of the positioning frame member and the cylindrical member of the housing unit. The upright pump capable of preventing corrosive gas according to claim 1, wherein the positioning surface of the motor unit and the top surface of the locking member are polished surface treatment.