CN109595150B

CN109595150B - Water pump pressure tank

Info

Publication number: CN109595150B
Application number: CN201811383722.4A
Authority: CN
Inventors: 陈伟秋; 陈奕潼; 陈昱辰
Original assignee: Taizhou Shuoyang Machinery Co ltd
Current assignee: Zhejiang shuoyang Machinery Co., Ltd
Priority date: 2018-11-20
Filing date: 2018-11-20
Publication date: 2020-05-22
Anticipated expiration: 2038-11-20
Also published as: CN109595150A

Abstract

The invention relates to a water pump pressure tank, which comprises a tank body with a tank opening, an isolation sleeve embedded in the tank body and a sealing cover for sealing the tank opening, wherein the isolation sleeve divides an inner cavity of the tank body into an air cavity and a water cavity; the other axial end face of the corrugated section is abutted against the axial end face of the sealing cover; a limiting bulge is convexly arranged on the circumferential surface of the sealing cover, and a sliding groove for the limiting bulge to slide along the axial direction and a first limiting groove which is communicated with the sliding groove and extends along the circumferential direction of the inner wall of the tank body are arranged on the inner wall of the tank body; the circumferential surface of the sealing cover is tightly attached to the inner wall of the tank body, a reliable sealing effect is formed by a plurality of mutually-associated sealing structures, and good sealing stability and shock resistance are achieved.

Description

Water pump pressure tank

Technical Field

The invention relates to the field of auxiliary fittings of water pumps, in particular to a water pump pressure tank.

Background

The pressure tank is a common accessory of the water pump, the structure of the pressure tank comprises a tank body, a leather bag and a flange cover, the flange cover aligns with the opening of the leather bag and fixes the leather bag in the tank body, the other end of the tank body is provided with an air nozzle hole for installing an air nozzle, and the air nozzle is fixed by a thread structure and penetrates through the tank body. The flange is covered with the decompression water inlet, and when the water pressure of pipeline was in the peak period, water can be by the water inlet entering leather bag in, played the effect of buffering the water under high pressure, reduced the impact of water under high pressure to the water pump, also the effectual frequent pneumatics number of times that reduces the water pump can improve the life of water pump.

If the Chinese patent with the publication number of CN205260356U discloses an electronic pressure control tank for a water pump, which comprises a tank body with a tank opening, wherein a sealing cover is arranged at the end of the tank opening of the tank body in a sealing way, a water inlet nozzle communicated with the inside of the tank body is arranged on the sealing cover, a sealing cavity is formed between the sealing cover and the tank body, an isolation sleeve for dividing the sealing cavity into a water cavity and an air cavity is arranged in the sealing cavity, a water cavity communicated with the water inlet nozzle is formed between the isolation sleeve and the sealing cover, and an air cavity for containing air is formed between the isolation sleeve and the tank body; the bottom of the tank body is sealed with a barometer which can sense the air pressure in the air cavity, and the tank body on one side of the air cavity is provided with an inflating nozzle.

The sealing is an important reference element of the performance of the pressure tank and mainly comprises the sealing between a water cavity and an air cavity and the sealing between the water cavity and the air cavity and the sealing externally connected with the tank body; the sealing cover side is adopted to support the isolation sleeve and tightly press the isolation sleeve on the inner wall of the inner cavity of the tank body, the mode can better isolate the water cavity and the air cavity, but the isolation stability between the air cavity and the space outside the tank body is not good enough, and especially under the condition that the air cavity and the water cavity in the tank body always have pressure and high-frequency impact on the sealing cover and the isolation sleeve, the leakage problem can be caused easily, and the normal operation of the water pump is influenced.

Disclosure of Invention

The invention aims to provide a water pump pressure tank, which solves the problem that the sealing among an air cavity, a water cavity and the outer side of a tank body of the pressure tank is not stable enough, and has the advantages of good sealing effect and high sealing stability.

The technical purpose of the invention is realized by the following technical scheme:

a water pump pressure tank comprises a tank body with a tank opening, an isolation sleeve embedded in the tank body and a sealing cover for sealing the tank opening, wherein the isolation sleeve divides an inner cavity of the tank body into an air cavity and a water cavity; the other axial end face of the corrugated section is abutted against the axial end face of the sealing cover; a limiting bulge is convexly arranged on the circumferential surface of the sealing cover, and a sliding groove for the limiting bulge to slide along the axial direction and a first limiting groove which is communicated with the sliding groove and extends along the circumferential direction of the inner wall of the tank body are arranged on the inner wall of the tank body; the circumferential surface of the sealing cover is tightly attached to the inner wall of the tank body.

By adopting the technical scheme, the corrugated section is of a telescopic elastic structure, when the sealing cover compresses the corrugated section, the corrugated section always has a compression pre-pressure to form two sealing surfaces between the sealing cover and the step of the tank body, the air cavity and the water cavity can be converged only by passing through the two sealing surfaces, the air cavity and the water cavity need to be communicated and leaked outside and need to enter the sealing surface between the sealing cover and the tank body, namely, the two cavities need to be leaked and need to be sealed at least by passing through the two sealing surfaces; the sealing structure has reliable sealing effect, and on the basis, the pressure generated by air pressure and water pressure for ejecting the sealing cover out of the tank body can be effectively resisted through the abutting limit of the limit bulge and the first limit groove, and after the assembly is finished, the corrugated section always has pressure on the sealing cover, so that the limit bulge of the sealing cover can be stably kept in the second limit groove; therefore, the stability of sealing can be effectively ensured.

The invention is further configured to: the inner wall of the first limiting groove is provided with an inclined surface or an arc surface which is away from the tank opening gradually by taking one end connected with the sliding groove as a starting point.

Through adopting above-mentioned technical scheme, inclined plane or cambered surface can provide the compression direction for sealed lid can produce the direction of screwing of deepening and compressing tightly the ripple section in jar body in rotatory spacing, is convenient for install.

The invention is further configured to: the outer side middle part of the sealing cover is sunken towards the inner cavity of the tank body and forms a columnar protruding structure in the inner cavity of the tank body, a limiting clamping protrusion is arranged on the columnar circumferential surface of the sealing cover, a second limiting groove is arranged on the inner wall of the tank body, and when the limiting protrusion is matched with the first limiting groove in a limiting mode, the limiting clamping protrusion is embedded in the second limiting groove.

Through adopting above-mentioned technical scheme, the surface of sealed lid is the wall, can possess certain elasticity, certain deformation can take place for sealed lid installation to spacing card is protruding, then reset after reacing the second spacing groove to it is spacing to form circumferential direction with this, and sealed lid does not have circumferential direction's torque under the outer external force condition of not system, as long as with the protruding rotation that resists the vibrations and produce of spacing card or the circumferential direction torque that the spacer atress deformation produced, can effectually keep the stability of sealing system.

The invention is further configured to: the limiting clamping protrusions comprise axial convex ribs and circumferential convex ribs which are perpendicular to each other, wherein the axial convex ribs are located on one side, in the rotating direction of the limiting protrusions entering the first limiting grooves from the sliding grooves, of the circumferential convex ribs, and the protruding heights of the axial convex ribs and the circumferential convex ribs relative to the crown are gradually reduced from the crossed positions to the respective end portions.

By adopting the technical scheme, in the process that the sealing cover is axially inserted along the inner wall of the tank body, the circumferential convex edge plays a role in guiding, is firstly contacted with the outer wall of the sealing cover and mutually generates elastic deformation on the surface so as to form avoidance; the sealing cover is provided with a sliding groove, a first limiting groove is formed in the sealing cover, a second limiting groove is formed in the sealing cover, a limiting bulge is arranged on the sealing cover, a first limiting groove is formed in the sealing cover, a second limiting groove is formed in the sealing cover, and the sealing cover is provided with a limiting block; during the process of reversely rotating and separating the sealing cover after matching, the sealing cover lacks of guiding pre-deformation, and the sealing cover and the tank body are difficult to separate from each other; therefore, the quick installation of the end is realized, and the connection stability between the sealing cover and the inner wall of the tank body is fully ensured.

The invention is further configured to: the axial convex edge is arranged at one end, far away from the isolation sleeve, of the circumferential convex edge.

Through adopting above-mentioned technical scheme, the direction that sealed lid breaks away from along the axial is also cancelled, and spacing card is protruding to be stopped soon and still possesses the spacing effect of axial.

The invention is further configured to: the circumferential surface of the sealing cover is provided with two limiting clamping bulges and two limiting bulges at intervals and in axial line central symmetry respectively.

Through adopting above-mentioned technical scheme, form four point docks when sealed lid and jar body butt joint, the stability of keeping the butt joint that can be better to make symmetrical position deformation unanimous, avoid the installation skew and lead to sealed effect to descend.

The invention is further configured to: the axial end face of the sealing cover is a cambered surface, a connecting nozzle communicated with the water through hole protrudes from the center of the sealing cover, and a hexagonal torsion arm is arranged on the outer wall of the connecting nozzle; the sealing cover is provided with an abutting part abutting against the axial end face of the tank body and an outer sealing part sleeved on the outer wall of the tank body.

Through adopting above-mentioned technical scheme, but the torque arm provides clamping structure to more convenient completion butt joint, the cambered surface provides the atress performance at the clamping butt joint in-process, and butt joint portion and outer seal form the vestibule formula seal structure, have formed the third and have sealed.

The invention is further configured to: the axial end face of the sealing cover is provided with a plurality of arc-shaped protrusions which are distributed circumferentially around the sealing cover, and the axial end face of the corrugated section is provided with arc-shaped grooves which are embedded with the arc-shaped protrusions.

Through adopting above-mentioned technical scheme, point face butt joint combines for ripple section all can keep good sealed everywhere, and can play dispersion conduction and absorbing effect to the vibrations that the water pump operation in-process produced.

The invention is further configured to: a cylindrical claw arm with a radial opening is arranged at one end, far away from the tank opening, of the isolation sleeve in a protruding mode, and a hook claw is arranged on an inner arm at the end of the claw arm in a protruding mode along the radial direction; the bottom of the inner cavity of the tank body is provided with a connecting plate along the axial direction in a protruding way, and the connecting plate is provided with a groove for the claw to be embedded and connected.

Through adopting above-mentioned technical scheme, collude the cooperation of claw and slot and can improve the isolation sleeve and keep away from the stability of jar mouthful part at work, avoid it to produce because high frequency pressure changes and rock, finally lead to the sealed effect reduction of ripple section.

The invention is further configured to: the corrugated section deviates from the axial end face of the tank opening and is convexly provided with an inner sealing ring, and the step of the tank body is concavely provided with an inner sealing groove which is embedded with the inner sealing ring.

Through adopting above-mentioned technical scheme, form inside vestibule formula seal structure, strengthen the sealed effect of air cavity to the inner seal ring can play and stop shaking and location effect.

In conclusion, the invention has the following beneficial effects:

1. a plurality of mutually-related seals are formed among the air cavity, the water cavity and the outside so as to form a reliable sealing effect;

2. the ripple section provides the pre-compaction, and spacing arch provides the axial spacing and is assisted with spacing calorie of protruding circumference and the axial spacing that provides, and the effectual stability and extremely strong shock resistance of having guaranteed sealed.

Drawings

FIG. 1 is an overall structural view of a pressure tank of embodiment 1;

FIG. 2 is a view showing the internal structure of a pressure tank according to embodiment 1;

FIG. 3 is a structural view of a can body of example 1;

FIG. 4 is an enlarged view at A of FIG. 3 of embodiment 1;

FIG. 5 is an enlarged view at B of FIG. 3 of embodiment 1;

FIG. 6 is a structural view of a cover in embodiment 1;

fig. 7 is an enlarged view at C of fig. 6 of embodiment 1.

In the figure, 1, a tank body; 2. an isolation sleeve; 3. a sealing cover; 11. An air cavity; 111. a tank opening; 12. air holes; 13. a step; 14. an inner sealing groove; 15. connecting a plate; 16. a trench; 17. a chute; 18. a first limit groove; 19. a second limit groove; 21. a water chamber; 22. a claw arm; 23. hooking claws; 24. a corrugated section; 25. an inner seal ring; 26. an arc-shaped groove; 31. a water through hole; 32. an arc-shaped protrusion; 33. a limiting bulge; 34. limiting clamping protrusions; 341. a circumferential rib; 342. an axial rib; 35. a nozzle is connected; 36. a torque arm; 37. an abutting portion; 38. and an outer sealing part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a water pump pressure tank comprises a tank body 1 with a tank opening, a separation sleeve 2 embedded in the tank body 1 and a sealing cover 3 for sealing the tank opening 111 (refer to fig. 3), wherein the circumferential surface of the sealing cover 3 is tightly attached to the inner wall of the tank body 1, the separation sleeve 2 separates the inner cavity of the tank body 1 into an air cavity 11 and a water cavity 21, an air hole 12 communicated with the air cavity 11 is formed in the bottom of the tank body 1, and a water through hole 31 communicated with the water cavity 21 is formed in the sealing cover 3.

Referring to fig. 3 and 4, the inner cavity of the can body 1 is provided with a step 13, and an annular inner seal groove 14 is concavely arranged in the middle of the annular structure of the step 13. The step 13 of the can body 1 is provided with a slide groove 17 in the axial direction near the inner wall of the can opening 111, and a first stopper groove 18 and a second stopper groove 19 (see fig. 5) that communicate with the slide groove 17 and extend in the circumferential direction of the inner wall of the can body 1. The inner wall of the first limit groove 18 is provided with an inclined surface or an arc surface which is gradually far away from the tank opening 111 with one end connected with the sliding groove as a starting point. The bottom of the inner cavity of the tank body 1 is provided with a cylindrical connecting plate 15 in a protruding mode along the axial direction, a groove 16 is formed in the connecting plate 15, two openings are formed in the connecting plate 15 along the radial direction, and the cylindrical surface surrounded by the connecting plate 15 surrounds the air hole 12.

Referring to fig. 1 and 2, a cylindrical claw arm 22 with a radial opening is convexly arranged at one end of the isolation sleeve 2 away from the tank opening 111, and a hook claw 23 is convexly arranged on an inner arm of the end part of the claw arm 22 along the radial direction; the claw arm 22 is sleeved on the connecting plate 15, and the hook claw 23 is embedded and matched with the groove 16. One end of the isolation sleeve 2 close to the tank opening 111 is provided with a corrugated section 24, the corrugated section 24 deviates from the axial end face of the tank opening 111 and is provided with an inner sealing ring 25 in a protruding mode, the axial end face of the corrugated section 24 is abutted to the axial end face of the step 13, and meanwhile the inner sealing ring 25 is embedded in the inner sealing groove 14. Referring to fig. 1, the other axial end surface of the bellows segment 24 abuts the axial end surface of the seal cover 3, and the abutting surface is provided with a plurality of arc-shaped grooves 26 distributed circumferentially.

Referring to fig. 6 and 1, the middle part of the outer side of the sealing cover 3 is recessed towards the inner cavity of the tank body 1, a columnar protruding structure is formed in the inner cavity of the tank body 1, and the axial end face of the sealing cover is an arc surface. The axial end face of the sealing cover 3 is provided with a plurality of arc-shaped protrusions 32 distributed around the circumference of the sealing cover 3, and the arc-shaped protrusions 32 are embedded with the arc-shaped grooves 26.

Referring to fig. 4 and 6, the cylindrical circumferential surface of the sealing cover 3 is provided with two stopper protrusions 34 and two stopper protrusions 33 at intervals and in axial center symmetry, respectively. The limiting protrusion 33 is in sliding fit with the sliding groove and the first limiting groove 18, when the sealing cover is connected, the limiting protrusion 33 enters from the sliding groove and can provide compression guide through the inclined surface or the arc surface, so that the sealing cover 3 can generate screwing guide for penetrating into the tank body 1 and compressing the corrugated section 24 at the time of rotating limiting, and is finally embedded in the first limiting groove 18 to provide axial anti-falling resistance. When the limit protrusion 33 is matched with the first limit groove 18 for limiting, the limit clamp protrusion 34 is embedded in the second limit groove 19.

Referring to fig. 6 and 7, the limit stop projection 34 includes an axial rib 342 and a circumferential rib 341 perpendicular to each other, wherein the axial rib 342 is located on one side of the circumferential rib 341 in the rotation direction from the sliding groove to the first limit groove 18 along the limit projection 33, and is located on one end of the circumferential rib 341 away from the isolation sleeve 2. And the protruding heights of the axial convex rib 342 and the circumferential convex rib 341 relative to the crown from the intersection position of the axial convex rib and the circumferential convex rib to the respective end part are gradually reduced, and the highest protruding height of the limiting clamping protrusion 34 is less than 0.5 mm. When the sealing cover 3 is in axial butt joint with the tank body 1, the circumferential convex ribs 341 provide guidance, the axial convex ribs 342 provide guidance during circumferential rotation, and in the process of reverse rotation separation and axial separation of the sealing cover 3 after matching, the mutual separation between the sealing cover 3 and the tank body 1 is difficult due to the lack of guidance pre-deformation.

Referring to fig. 2, a nozzle 35 communicated with the water through hole 31 protrudes from the center of the sealing cover 3, and a hexagonal torsion arm 36 is arranged on the outer wall of the nozzle 35; the sealing cover 3 is provided with an abutting part 37 abutting against the axial end face of the tank 1 and an outer sealing part 38 sleeved on the outer wall of the tank 1.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a water pump overhead tank, including the jar body (1) that has jar mouth (111), inlay in the sealed lid (3) of jar internal spacer (2) and closed jar mouth (111), spacer (2) separate jar body (1) inner chamber for air cavity (11) and water cavity (21), be provided with gas pocket (12) of intercommunication air cavity (11) on the jar body (1), be provided with limbers (31) of intercommunication water cavity (21) on sealed lid (3), characterized by: one end of the isolation sleeve (2) close to the tank opening (111) is provided with a corrugated section (24), and the inner cavity of the tank body (1) is provided with a step (13) which is abutted against the axial end face of the corrugated section (24) along the axial direction; the other axial end surface of the corrugated section (24) is abutted against the axial end surface of the sealing cover (3); a limiting bulge (33) is convexly arranged on the circumferential surface of the sealing cover (3), a sliding groove (17) for the limiting bulge (33) to slide along the axial direction and a first limiting groove (18) which is communicated with the sliding groove (17) and extends along the circumferential direction of the inner wall of the tank body (1) are arranged on the inner wall of the tank body (1); the circumferential surface of the sealing cover (3) is tightly attached to the inner wall of the tank body (1); the middle part of the outer side of the sealing cover (3) is sunken towards the inner cavity of the tank body (1) and forms a columnar protruding structure in the inner cavity of the tank body (1), a limiting clamping protrusion (34) is arranged on the columnar circumferential surface of the sealing cover (3), a second limiting groove (19) is arranged on the inner wall of the tank body (1), and when the limiting protrusion (33) is matched with the first limiting groove (18) for limiting, the limiting clamping protrusion (34) is embedded in the second limiting groove (19); the limiting clamping protrusions (34) comprise axial convex protrusions (342) and circumferential convex protrusions (341) which are perpendicular to each other, wherein the axial convex protrusions (342) are located on one side, facing the limiting protrusions (33), of the circumferential convex protrusions (341) in the rotating direction of the limiting protrusions entering the first limiting groove (18) from the sliding groove, and the protruding heights of the axial convex protrusions (342) and the circumferential convex protrusions (341) relative to the crown are gradually reduced from the crossed positions to the respective end portions.

2. A water pump pressure tank as claimed in claim 1, wherein: the inner wall of the first limiting groove (18) is provided with an inclined surface or an arc surface which is away from the tank opening (111) gradually by taking one end connected with the sliding groove (17) as a starting point.

3. A water pump pressure tank as claimed in claim 1, wherein: the axial convex rib (342) is arranged at one end of the circumferential convex rib (341) far away from the isolation sleeve (2).

4. A water pump pressure tank as claimed in claim 1, wherein: the circumferential surface of the sealing cover (3) is provided with two limiting clamping protrusions (34) and two limiting protrusions (33) at intervals and symmetrically arranged at the center of the axis respectively.

5. A water pump pressure tank as claimed in claim 1, wherein: the axial end face of the sealing cover (3) is an arc face, a connecting nozzle (35) communicated with the water through hole (31) protrudes from the center of the sealing cover (3), and a hexagonal torsion arm (36) is arranged on the outer wall of the connecting nozzle (35); the sealing cover (3) is provided with a butting part (37) which is butted against the axial end face of the tank body (1) and an outer sealing part (38) which is sleeved on the outer wall of the tank body (1).

6. A water pump pressure tank as claimed in claim 1, wherein: the axial end face of the sealing cover (3) is provided with a plurality of arc-shaped protrusions (32) which are distributed circumferentially around the sealing cover (3), and the axial end face of the corrugated section (24) is provided with arc-shaped grooves (26) which are embedded with the arc-shaped protrusions (32).

7. A water pump pressure tank as claimed in claim 1, wherein: one end, far away from the tank opening (111), of the isolation sleeve (2) is provided with a cylindrical claw arm (22) with a radial opening in a protruding mode, and an inner arm at the end of the claw arm (22) is provided with a hook claw (23) in a protruding mode in the radial direction; the bottom of the inner cavity of the tank body (1) is provided with a connecting plate (15) in an axially protruding mode, and a groove (16) for the hook claw (23) to be embedded is formed in the connecting plate (15).

8. A water pump pressure tank as claimed in claim 1, wherein: the corrugated section (24) deviates from the axial end face of the tank opening (111) and is convexly provided with an inner seal ring (25), and the step (13) of the tank body (1) is concavely provided with an inner seal groove (14) embedded with the inner seal ring (25).