TWM557783U - Vertical pump front cover - Google Patents

Abstract

A vertical pump front cover is adapted to be locked to a pump cylinder along an axis. The vertical pump front cover comprises a cover body and a locking wall. The cover body defines a cover chamber for the passage of chemical liquid. The locking wall is looped around the axis to an end of the cover body adjacent to the pump cylinder and defines a passage communicating with the cover chamber, the locking wall including a cover body opposite to the cover body along the axis and Abutting the abutting surface of the pump cylinder along the axis, extending from an outer edge of the abutting surface to an outer peripheral surface of the cover body, a plurality of pockets recessed from the outer peripheral surface toward the axis, and a plurality of along the axis The through holes are connected to the abutting surfaces and respectively communicate with the through holes of the equal-receiving slots, and the equal-receiving slots are respectively used for accommodating a plurality of nuts, and the through holes are respectively used for piercing the plurality of bolts. With the structure of the locking wall, the vertical pump front cover can be locked to the pump cylinder by the bolts and nuts, and can prevent chemical liquid from leaking from the lock.

Description

Vertical pump front cover

The present invention relates to a front cover, and more particularly to a front cover of a vertical pump.

Referring to Fig. 1, there is a vertical pump for pumping a corrosive chemical liquid. The vertical pump 9 includes a motor 91, a pump barrel 92 connected to one side of the motor 91, and a pump An impeller unit 93 that is driven by the motor 91 in the cylinder 92, a front cover 94 that is disposed on a side of the pump cylinder 92 opposite to the motor 91, and a plurality of the front cover 94 are screwed to the pump cylinder 92. Bolt 95. The pump cylinder 92 includes a barrel 921 formed around an axis L, and a flange 922 looped around the axis L to the outer peripheral surface of the barrel 921. The flange 922 has a plurality of axes along the axis L. The front cover 94 includes a cover body 941 defining a cover chamber 96, and a locking wall 942 looping to the side of the cover body 941 about the axis L, the cover The body 941 has a water inlet 943 communicating with the cover chamber 941 and a water outlet 944. The locking wall 942 defines a passage 97 communicating with the cover chamber 96 and has abutting against the pump cylinder 92. The abutting surface 945 of the flange 922, and a plurality of holes 946 extending through the abutting surface 945 in the direction of the axis L and corresponding to the through holes 946 of the flange 922, respectively, and the bolts 95 pass through respectively The through holes 923 of the pump cylinder 92 are screwed into the screw holes 946 of the front cover 94 to fix the front cover 94 to the pump cylinder 92.

However, the front cover 94 is first made in a casting manner, and may have a plurality of air bubbles and sand holes after the finished product is formed, and then processed to form the screw holes 946, since the screw holes 946 are easy to make during the tapping process. The bubbles and sand holes are in communication with the screw holes 946, so that after a period of use, the corrosive chemical liquid easily along the surface of the cover chamber 96, the passage 97, the bubbles, and the screw holes 946. Leaked out.

Accordingly, it is an object of the present invention to provide a vertical pump front cover having a leak-proof locking structure.

Therefore, the front cover of the vertical pump is suitable for being locked to one end of a pump cylinder by a plurality of bolts and nuts. The vertical pump front cover comprises a cover body and a locking wall. The cover body has a shell shape and defines a cover chamber. The cover body includes a first flow path extending along the axis away from the pump barrel and communicating with the cover chamber, and a first flow path along the first flow path. The tangential direction is open and communicates with the second flow path of the cover chamber. The locking wall is looped around the axis to an end of the cover body adjacent to the pump cylinder, and defines a passage connecting the cover chamber, the locking wall includes a side opposite to the cover body along the axis Abutting abutting surface of the pump cylinder along the axis, an outer peripheral surface extending from the abutting surface to an outer peripheral surface of the cover body, a plurality of recesses recessed from the outer peripheral surface toward the axis, and a plurality of The axial direction penetrates the abutting surface and respectively communicates with the through holes of the equal-receiving slots, and the equal-receiving slots are respectively used for accommodating the nuts, and the through holes are respectively provided for the bolts to pass through.

The utility model has the advantages that: the vertical tank front cover can be locked to the pump cylinder by the bolts and nuts by using the same capacity groove and the through hole of the locking wall, and the chemical liquid can be prevented Leakage from the lock.

Referring to FIG. 2 and FIG. 3, an embodiment of the front cover of the vertical pump is adapted to be locked at one end of a pump cylinder 1 of the vertical pump by a plurality of bolts 3 and nuts 4 along an axis L. 1 having a barrel 11 about the axis L, and a flange 12 looped around the axis L to the outer peripheral surface of the barrel 11, the flange 12 having a plurality of spaced apart and spaced along the axis L A through hole 121 penetrating in the direction of the axis L. The vertical pump can be used to pump corrosive chemical liquids. The vertical pump front cover 2 includes a cover body 21 and a locking wall 22. Moreover, the vertical pump front cover 2 of the present embodiment is made by casting.

The cover body 21 has a shell shape and defines a cover chamber 5, and the cover body 21 includes a first flow passage 211 which is open in the direction away from the pump cylinder 1 and communicates with the cover chamber 5 along the axis L, and A second flow path 212 that is open in the tangential direction of the first flow path 211 and communicates with the cover chamber 5.

The locking wall 22 is integrally formed around the axis L to be adjacent to the end of the cover body 21 adjacent to the pump cylinder 1 and defines a passage 6 communicating with the cover chamber 5, the locking wall 22 includes a Along the axis L, opposite to the abutment surface 221 of the cover body 21, an outer peripheral surface 222 extending from the abutment surface 221 to the outer peripheral surface 222 of the cover body 21, and a plurality of recesses from the outer peripheral surface 222 toward the axis L The pocket 223 and a plurality of through holes 224 extending through the abutting surface 221 in the direction of the axis L and communicating with the equal pockets 223, respectively. The equal-receiving groove 223 is directly formed on the joint of the cap body 21 and the locking wall 22 while the vertical pump front cover 2 is formed by casting.

Referring to FIG. 3 and FIG. 4, each of the slots 223 of the locking wall 22 is defined by a groove peripheral surface 225 of the locking wall 22 and a groove bottom surface 226. The groove circumferential surface 225 intersects the outer circumferential surface 222. And the shape perpendicular to the axis L is rectangular. The groove peripheral surface 225 has an abutting portion 227 which is penetrated by the respective through holes 224 and extends in a direction perpendicular to the axis L. The groove bottom surface 226 is perpendicular to the axis L. The radial direction is opposite to the outer peripheral surface 222 and is connected to the groove circumferential surface 225.

In the embodiment, the cover body 21 and the locking wall 22 are integrally formed.

Referring to FIG. 3, FIG. 4 and FIG. 5, when the vertical pump front cover 2 is mounted on the pump cylinder 1, the abutting surface 221 of the locking wall 22 is first abutted against the pump along the axis L. The flanges 12 of the cylinder 1 and the through holes 224 of the locking wall 22 respectively correspond to the through holes 121 of the pump cylinder 1, and then the nuts 4 are respectively placed in the locking wall 22 The contour of the nut 4 is perpendicular to the axis L, and is respectively limited by the circumferential surface 225 of the groove, and then the bolts 3 are respectively oriented along the axis L. Passing through the through holes 121 of the pump cylinder 1 and passing through the through holes 224 of the locking wall 22 respectively, and finally screwing the nuts 4 in the equal-receiving slots 223, the bolts 3 and after the nuts 4 are locked, the nuts 4 abut against the abutting portions 227 of the circumferential surface 225 of the grooves, and since the abutting portions 227 are substantially perpendicular to the plane of the axis L, the The bolt 3 and the nut 4 urge the vertical pump front cover 2 and the pump cylinder 1 along the axial direction L.

It is worth mentioning that the nut 4 in this embodiment has a rectangular shape, but a general hexagonal nut or other nut that can be limited by the circumferential surface of the groove can also be used.

When the vertical pump is in use, the chemical liquid enters the cover chamber 5 from one of the first flow path 211 or the second flow path 212 and flows through the passage 6, due to the vertical pump front cover 2, the equal-shaped groove 223 is directly formed during casting to accommodate the nuts 4, and the process of tapping is not required, so that the groove circumferential surface 225 and the groove bottom surface 226 can maintain the surface integrity, thereby preventing chemical drugs. The liquid leaks out of the locked part.

In summary, the vertical pump front cover of the present invention allows the vertical pump front cover 2 to be locked to the pump cylinder 1 by the structure of the locking wall 22, and can effectively prevent leakage of chemical liquid. Therefore, it is indeed possible to achieve the purpose of this new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧ pump
11‧‧‧
12‧‧‧Flange
121‧‧‧through holes
2‧‧‧Vertical pump front cover
21‧‧‧ Cover body
211‧‧‧First runner
212‧‧‧Second runner
22‧‧‧Lock wall
221‧‧‧Connecting
222‧‧‧ outer perimeter
223‧‧‧ 容容
224‧‧‧through holes
225‧‧‧ slotted surface
226‧‧‧Slot bottom
227‧‧‧Apartment
3‧‧‧ bolt
4‧‧‧ nuts
5‧‧‧ Covering room
6‧‧‧ channel
L‧‧‧ axis

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is an exploded perspective view of a conventional vertical pump; Figure 2 is a front view of the vertical pump of the present invention 1 is a plan view of a pump cylinder fixed to a vertical pump; FIG. 3 is an incomplete exploded view of the pump cylinder fixed to the vertical pump of the embodiment; FIG. 4 is along FIG. A cross-sectional view taken in the line IV-IV; and Fig. 5 is a cross-sectional view taken along line VV in Fig. 4.

Claims (3)

The utility model relates to a vertical pump front cover, which is suitable for locking a plurality of bolts and nuts along one axis to one end of a pump cylinder. The vertical pump front cover is formed by casting and comprises: a cover body, which is shell-shaped and defined a cover chamber, the cover body includes a first flow path opening along the axis away from the pump barrel and communicating with the cover chamber, and opening in a tangential direction of the first flow path and communicating the cover a second flow passage of the chamber; and a locking wall integrally formed around the axis to the end of the cover body adjacent to the pump cylinder, and surrounding a passage defining a communication chamber, the locking wall Included with abutting surface along the axis opposite to the cover body for abutting the pump cylinder along the axis, an outer peripheral surface extending from the abutting surface to an outer peripheral surface of the cover body, and a plurality of outer peripheral faces from the outer peripheral surface a recessed groove of the axis, and a plurality of through holes extending through the abutting surface in the axial direction and respectively communicating with the receiving pockets, wherein the receiving pockets are respectively for receiving the nuts, the through holes respectively Used for the bolts to be worn. The vertical pump front cover according to claim 1, wherein each of the pockets is defined by a groove circumferential surface and a groove bottom surface of the locking wall, the groove circumferential surface intersecting the outer circumferential surface, and has a An abutting portion penetrating through the respective through holes and extending in a direction perpendicular to the axis, the bottom surface of the groove is opposite to the outer peripheral surface in a direction perpendicular to the axis and is connected to the groove peripheral surface, and the abutting portion of the groove peripheral surface Used for the respective nuts to abut. The vertical pump front cover according to claim 2, wherein the nuts have a rectangular shape perpendicular to the axis, and the circumferential surfaces of the grooves are rectangular perpendicular to the axis, and are respectively used to limit the positions. Nut.