Sealing structure for hot water circulating pump

Abstract

The utility model discloses a sealing structure for a hot water circulating pump, which comprises a main sealing cylinder, an upper sealing cylinder is fixed at the top end of the main sealing cylinder, a positioning ring is arranged on the outer wall of the upper end of the main sealing cylinder, a lower sealing cylinder is mounted at the bottom end of the main sealing cylinder, and a third flowing cavity is arranged in the lower sealing cylinder. A third flowing cavity is formed in the main sealing cylinder, the two ends of the third flowing cavity extend to the exterior of the lower sealing cylinder, a first flowing cavity is formed in the main sealing cylinder, the two ends of the first flowing cavity extend to the exterior of the main sealing cylinder, a second flowing cavity is formed in the upper sealing cylinder, a sealing ring is installed at the upper end in the first flowing cavity, and the material structure of the sealing ring is fluororubber. According to the sealing structure, the service life of the sealing ring is prolonged, the sealing performance of the sealing structure is guaranteed, the purpose that the sealing structure is easy to disassemble and assemble is achieved, the convenience during maintenance of the sealing structure is improved, and the purpose that the sealing structure is easy to position and arrange is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid machinery equipment technical field, concretely is a kind of sealing structure for hot water circulating pump. BACKGROUND

[0002] Hot water circulating pump belongs to the important component of hot water circulation system, and sealing structure belongs to the important component of hot water circulating pump, hot water circulating pump in the running process, due to the high temperature and high pressure of medium in pump, prone to the phenomenon of leakage, affect the normal operation of pump and the safety of system, to improve this kind of phenomenon, thus develop a kind of sealing structure for hot water circulating pump has important practical significance.

[0003] Reference announcement number CN210371317U for a device for hot water circulating pump sealing, it includes the casing, the top of the casing is set with placing groove, the bottom of the inner cavity of the placing groove is set with through slot, the inner cavity of the placing groove is provided with shaft sleeve, the inside of the shaft sleeve is provided with cavity, the inner cavity of the placing groove and the outside of the shaft sleeve are provided with sealing packing, this sealing structure is cooperated by casing, placing groove, through slot, shaft sleeve, cavity and sealing packing, realizes the purpose of long service life, effectively avoids the phenomenon that sealing ring is deformed under high temperature hot water, and avoids the impact force caused by axial movement to cause sealing ring wear and tear and sealing failure, so as to ensure that water pump can normally operate, improve the experience of user to hot water circulating pump, meet the demand of today's market, improve the practicability and usability of hot water circulating pump, solve the problem of short service life of previous hot water circulating pump sealing, according to the above, the sealing structure can be better applied, but the high-temperature resistance and wear resistance of its sealing component are general, so that the sealing component is damaged after long-term use due to high temperature and high pressure, and the service life of the sealing component in the sealing structure is still affected, and it still needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of sealing structure for hot water circulating pump, to solve the problem that sealing structure can be better applied in the above background art, but the high-temperature resistance and wear resistance of its sealing component are general, so that the sealing component is damaged after long-term use due to high temperature and high pressure, and the service life of the sealing component in the sealing structure is still affected.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a sealing structure for hot water circulating pump, including main seal cylinder, the top of main seal cylinder is fixed with upper seal cylinder, the outer wall of main seal cylinder upper end is equipped with the positioning ring, the bottom of main seal cylinder is installed with lower seal cylinder, the inside of lower seal cylinder is equipped with third flow cavity, both ends of third flow cavity extend to the outside of lower seal cylinder, the inside of main seal cylinder is equipped with first flow cavity, both ends of first flow cavity extend to the outside of main seal cylinder, the inside of upper seal cylinder is equipped with second flow cavity, both ends of second flow cavity extend to the outside of upper seal cylinder, the upper end of first flow cavity inside is installed with sealing ring, the top of sealing ring extends to the inside of second flow cavity, the material structure of sealing ring is set up as fluorine rubber.

[0006] Preferably, the edge position of the bottom of the main seal cylinder is provided with equidistant threaded holes, the inside of the lower seal cylinder at the position of the threaded holes is provided with pin holes, and the positioning pin is disposed through the arrangement of the pin holes and the threaded holes.

[0007] Preferably, the outer wall of the positioning ring on both sides is provided with a half waist type hole, and the two half waist type holes are symmetrical about the center line of the positioning ring, and the positioning ring is bolted and disposed through the arrangement of the half waist type hole.

[0008] Preferably, the bottom end of the lower seal cylinder at the position of the pin hole is installed with a positioning pin, the top of the positioning pin penetrates the pin hole and is threadedly connected with the threaded hole, and a hexagonal groove is arranged at the center position of the bottom of the positioning pin, and the positioning pin is twisted through the arrangement of the hexagonal groove.

[0009] Preferably, the inside of the first flow cavity of the top end of the lower seal cylinder is installed with a linkage ring, the outer wall of the linkage ring touches the inner wall of the first flow cavity, and the fourth flow cavity is disposed through the arrangement of the linkage ring.

[0010] Preferably, the inside of the linkage ring is provided with a fourth flow cavity, and both ends of the fourth flow cavity extend to the outside of the linkage ring, and the medium is flowed through the arrangement of the fourth flow cavity.

[0011] Compared with the prior art, the utility model has the advantages that the sealing structure for hot water circulating pump not only prolongs the service life of the sealing ring, guarantees the sealing performance of the sealing structure, achieves the purpose of easy disassembly and assembly of the sealing structure, improves the convenience of maintenance of the sealing structure, and achieves the purpose of easy positioning and arrangement of the sealing structure.

[0012] (1) through the sealing ring is arranged at the connecting position of the second flow cavity and the first flow cavity, and the sealing ring is made of fluorine rubber material, so that the sealing ring has good high temperature resistance and wear resistance, thereby effectively reducing the damage of the sealing ring caused by high temperature and high pressure, prolonging the service life of the sealing ring and ensuring the sealing performance of the sealing structure;

[0013] (2) by screwing the positioning pin, the upper end of the positioning pin is screwed out to the outside of the threaded hole, so that the lower sealing cylinder is detached from the bottom end of the main sealing cylinder, and when the positioning pin penetrates the pin hole and is screwed into the threaded hole, the lower sealing cylinder is locked and arranged at the bottom end of the main sealing cylinder, so that the sealing structure is easily disassembled, thereby improving the convenience of the sealing structure during maintenance;

[0014] (3) the positioning ring is arranged on the outer wall of the upper sealing cylinder, and the half waist type holes are arranged on the outer walls on both sides of the positioning ring, if the sealing structure needs to be arranged, the positioning ring is only needed to be attached to the specified platform, and then the bolt penetrates the half waist type hole and is screwed into the specified platform, so that the positioning ring is attached and arranged on the platform, thereby achieving the purpose of easily positioning and arranging the sealing structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the sectional structure of the utility model;

[0016] Figure 2 It is a bottom view of the structure of the utility model;

[0017] Figure 3 It is a top view of the exploded structure of the utility model;

[0018] Figure 4 It is a bottom view of the exploded structure of the utility model.

[0019] In the drawing: 1, main sealing cylinder; 101, first flow cavity; 2, upper sealing cylinder; 201, second flow cavity; 3, positioning ring; 301, half waist type hole; 4, lower sealing cylinder; 401, third flow cavity; 402, pin hole; 5, threaded hole; 6, positioning pin; 601, hexagonal groove; 7, linkage ring; 701, fourth flow cavity; 8, sealing ring. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] Please refer to Figures 1-4The utility model provides an embodiment: a sealing structure for hot water circulating pump, including main seal cylinder 1, the edge position of main seal cylinder 1 bottom is equipped with the screw hole 5 of equal interval, the inside of lower seal cylinder 4 at the position of screw hole 5 is equipped with pin hole 402,

[0022] When using, through the setting of pin hole 402 and screw hole 5, positioning pin 6 is handled to settle down,

[0023] The bottom end of lower seal cylinder 4 at the position of pin hole 402 is all installed with positioning pin 6, the top end of positioning pin 6 penetrates pin hole 402 and is connected with screw thread 5, the center position of the bottom of positioning pin 6 is equipped with hexagonal groove 601,

[0024] When using, through the setting of hexagonal groove 601, positioning pin 6 is handled to screw,

[0025] The top end of main seal cylinder 1 is fixed with upper seal cylinder 2, the outer wall on the upper end of main seal cylinder 1 is equipped with positioning ring 3, the outer wall on both sides of positioning ring 3 is all equipped with half waist type hole 301, and two half waist type holes 301 are symmetrical about the center line of positioning ring 3,

[0026] When using, through the setting of half waist type hole 301, positioning ring 3 is handled to be bolted and settled down,

[0027] The bottom end of main seal cylinder 1 is installed with lower seal cylinder 4, the inside of the first flow cavity 101 in the top end of lower seal cylinder 4 is installed with linkage ring 7, and the outer wall of linkage ring 7 touches the inner wall of first flow cavity 101,

[0028] When using, through the setting of linkage ring 7, the fourth flow cavity 701 is handled to settle down,

[0029] The inside of linkage ring 7 is equipped with fourth flow cavity 701, and both ends of fourth flow cavity 701 extend to the outside of linkage ring 7,

[0030] When using, through the setting of fourth flow cavity 701, medium is handled to flow,

[0031] The inside of lower seal cylinder 4 is equipped with third flow cavity 401, both ends of third flow cavity 401 extend to the outside of lower seal cylinder 4, the inside of main seal cylinder 1 is equipped with first flow cavity 101, both ends of first flow cavity 101 extend to the outside of main seal cylinder 1, the inside of upper seal cylinder 2 is equipped with second flow cavity 201, both ends of second flow cavity 201 extend to the outside of upper seal cylinder 2, the top end of sealing ring 8 in first flow cavity 101 is installed, the top end of sealing ring 8 extends to the inside of second flow cavity 201, and the material structure of sealing ring 8 is set as fluorine rubber.

[0032] The application embodiment is used, first by means of tool from hexagonal slot 601 to positioning pin 6 is screwed, the upper end of positioning pin 6 is screwed to the outside of threaded hole 5, namely the lower sealing cylinder 4 is separated from the bottom end of main sealing cylinder 1, when the positioning pin 6 is penetrated through the pin hole 402 and is screwed to the inside of threaded hole 5, the lower sealing cylinder 4 is locked and arranged at the bottom end of main sealing cylinder 1, to easily disassemble and maintain the sealing structure, then the sealing ring 8 is arranged at the connecting position of second flow cavity 201 and first flow cavity 101, and the sealing ring 8 is made of fluorine rubber material, so that the sealing ring 8 has good high temperature resistance and wear resistance, which can effectively reduce the damage of sealing ring 8 due to high temperature and high pressure, to prolong the service life of sealing ring 8, finally the positioning ring 3 is arranged on the outer wall of upper sealing cylinder 2, and the half waist type hole 301 is arranged on the outer wall on both sides of the positioning ring 3, if the sealing structure needs to be arranged, the positioning ring 3 is only needed to be attached to the specified platform, the bolt is penetrated through the half waist type hole 301 and screwed into the specified platform, the sealing structure can be positioned and arranged, the inside of the specified mounting platform is provided with a circular cavity, the circular cavity is matched with the upper sealing cylinder 2, so that the upper sealing cylinder 2 is penetrated into the mounting platform, and the positioning ring 3 is easily attached to the platform, the mounting platform is used for supporting the sealing structure, and the mounting platform belongs to the prior art, so it is not described in detail, if the sealing structure does not need to be positioned and arranged, the positioning ring 3 does not need to be positioned and arranged by bolt connection, when the pipeline of hot water circulating pump and outlet pipeline are respectively inserted into second flow cavity 201 and first flow cavity 101, the sealing ring 8 seals the connecting area of hot water circulating pump pipeline and outlet pipeline, to reduce the leakage phenomenon in the medium circulation process, so as to complete the use of the sealing structure.

Claims

1. A seal structure for a hot water circulating pump, characterized by: The utility model provides a sealing device, including main sealing cylinder (1), the top of main sealing cylinder (1) is fixed with upper sealing cylinder (2), the outer wall of main sealing cylinder (1) upper end is equipped with positioning ring (3), the bottom of main sealing cylinder (1) is installed with lower sealing cylinder (4), the inside of lower sealing cylinder (4) is equipped with third flow cavity (401), both ends of third flow cavity (401) extend to the outside of lower sealing cylinder (4), the inside of main sealing cylinder (1) is equipped with first flow cavity (101), both ends of first flow cavity (101) extend to the outside of main sealing cylinder (1), the inside of upper sealing cylinder (2) is equipped with second flow cavity (201), both ends of second flow cavity (201) extend to the outside of upper sealing cylinder (2), the upper end in first flow cavity (101) is installed with sealing ring (8), the top of sealing ring (8) extends to the inside of second flow cavity (201), the material structure of sealing ring (8) is set up as fluorine rubber.

2. A seal structure for a hot water circulating pump according to claim 1, characterized in that: The bottom of main sealing cylinder (1) is equipped with the screw hole (5) of equal interval at the edge position, the inside of lower sealing cylinder (4) at the position of screw hole (5) is equipped with pin hole (402).

3. The seal structure for a hot water circulating pump according to claim 1, characterized by: The outer wall of positioning ring (3) both sides is equipped with half waist type hole (301), and two half waist type holes (301) are symmetrical about the center line of positioning ring (3).

4. The seal structure for a hot water circulating pump according to claim 2, characterized by: The bottom of lower sealing cylinder (4) at the position of pin hole (402) is installed with positioning pin (6), the top of positioning pin (6) penetrates pin hole (402) and is connected with screw hole (5) threadedly, and the bottom of positioning pin (6) is equipped with hexagonal groove (601) at the center position.

5. The seal structure for a hot water circulating pump according to claim 1, characterized by: The inside of lower sealing cylinder (4) is equipped with linkage ring (7), and the outer wall of linkage ring (7) is touched with the inner wall of first flow cavity (101).

6. A seal structure for a hot water circulating pump according to claim 5, characterized in that: The inside of linkage ring (7) is equipped with fourth flow cavity (701), and both ends of fourth flow cavity (701) extend to the outside of linkage ring (7).

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