CN214196698U

CN214196698U - Horizontal pump with mechanical seal convenient and easy to replace

Info

Publication number: CN214196698U
Application number: CN202023307378.6U
Authority: CN
Inventors: 何良平; 达云平; 冯军
Original assignee: Sichuan Santai Lida Pump Co ltd
Current assignee: Sichuan Santai Lida Pump Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-14
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a horizontal pump with easy replacement of mechanical seal, belonging to fluid supercharging machinery, comprising a motor and a connecting frame covered on the output shaft of the motor; a detachable machine seal seat is installed in the connecting frame, sealing grooves are formed in opposite surfaces of the machine seal seat and the connecting piece, a sleeve is further installed in each sealing groove, and a locking ring is fixedly clamped between each sleeve and the inner wall of each sealing groove; the motor is characterized in that a compression ring for compressing the sleeve is further installed in the sealing groove, a sealing sleeve is sleeved on the compression ring and the motor output shaft together, and a compression spring for compressing the sealing sleeve on the compression ring is further sleeved on the motor output shaft. The utility model discloses not only guaranteed the sealed effect of pump, but also at seal structure quick replacement when impaired, shortened the change time greatly, made the replacement cost lower.

Description

Horizontal pump with mechanical seal convenient and easy to replace

Technical Field

The utility model belongs to a fluid pressure boost machinery particularly, relates to a just, easily change mechanical seal horizontal pump.

Background

A pump is a machine that delivers or pressurizes a fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase. The pump is mainly used for conveying liquid such as water, oil, acid-base liquid, emulsion, suspension emulsion and liquid metal, and can also be used for conveying liquid, gas mixture and liquid containing suspended solid. Pumps can be generally classified by their operating principle into three types, positive displacement pumps, dynamic pumps and other types of pumps. In addition to classification by theory of operation, classification and naming may be by other methods. For example, the driving method may be classified into an electric pump, a turbine pump, and the like; can be divided into a single-stage pump and a multi-stage pump according to the structure; can be divided into a boiler feed pump, a metering pump and the like according to the application; the liquid can be divided into a water pump, an oil pump, a slurry pump and the like according to the property of the transported liquid. According to the structure of the shaft or not, a linear pump and a traditional pump can be divided.

In prior art, the water pump all adopts mechanical seal, along with long-term the use, the sealing washer is not hard up easily, leads to the water in the pump body to enter into the motor easily inside, causes the motor to damage, consequently, for the life of guaranteeing the motor, need regularly change the sealing washer, because its structure is more complicated, makes the sealing washer change the valve, in case take place to damage, replacement cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a just, easily change mechanical seal horizontal pump has not only guaranteed the sealed effect of pump, but also when seal structure is impaired quick replacement, has shortened the change time greatly, makes the replacement cost lower.

For realizing the purpose of the utility model, the technical proposal adopted is that: a horizontal pump with easily replaced mechanical seal comprises a motor and a connecting frame covered on an output shaft of the motor; a detachable machine seal seat is installed in the connecting frame, sealing grooves are formed in opposite surfaces of the machine seal seat and the connecting piece, a sleeve is further installed in each sealing groove, and a locking ring is fixedly clamped between each sleeve and the inner wall of each sealing groove; the motor is characterized in that a compression ring for compressing the sleeve is further installed in the sealing groove, a sealing sleeve is sleeved on the compression ring and the motor output shaft together, and a compression spring for compressing the sealing sleeve on the compression ring is further sleeved on the motor output shaft.

Further, the seal groove is a stepped groove, the inner wall of the sleeve and the outer wall of the sleeve are stepped, and a seal ring is compressed between the outer wall of the sleeve and the seal groove.

Furthermore, a support ring is embedded in the large-diameter end of the sleeve, and the compression ring is compressed on the support ring.

Furthermore, the seal cover is in a step shaft sleeve shape, the large-diameter end of the seal cover is sleeved on the compression ring, and the compression spring is compressed on the step surface of the seal cover.

Furthermore, a compression sleeve for compressing the sealing sleeve is further sleeved outside the sealing sleeve, the compression sleeve is in a step shaft sleeve shape, and the end part of the compression spring is sleeved at the small-diameter end of the compression sleeve.

Furthermore, the inner diameter of the small-diameter end of the compression sleeve is smaller than the outer diameter of the small-diameter end of the sealing sleeve.

Furthermore, the inner wall of the connecting frame is also provided with a limiting flange, and the mechanical seal seat is fixed on the limiting flange.

Furthermore, still be equipped with first axle bush on the machine seals the seat, the link span inner wall is equipped with the second axle bush, and first axle bush and second axle bush jointly close to motor output shaft cohesion.

Furthermore, a volute is further installed on the connecting frame, a turbine is fixedly installed on an output shaft of the motor, and the turbine is located in the volute.

Furthermore, a limiting groove is formed in the volute, a limiting ring matched with the limiting groove is arranged on the turbine, and the limiting ring is movably inserted in the limiting groove.

The utility model has the advantages that,

the utility model has the advantages that the gland bush is respectively pressed between the two compression rings through the compression spring, one part of the gland bush is sleeved on the motor output shaft, and the part of the gland bush sleeved on the motor output shaft is not pressed, and the gland bush is sealed and sleeved on the motor output shaft in the rotation process of the motor output shaft because the gland bush has certain elasticity, so that the sealing performance of the motor output shaft is ensured; meanwhile, the machine seal seat is detachably mounted, so that the machine seal seat can be directly dismounted when the seal sleeve is damaged, and then the seal sleeve is taken down and replaced after the motor output shaft is taken out, so that the mounting and replacement of the seal structure are more convenient, the replacement time is greatly shortened, and the replacement cost is reduced.

Drawings

FIG. 1 is a schematic view of a horizontal pump with easy replacement of mechanical seal provided by the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Reference numbers and corresponding part names in the drawings:

1. the device comprises a motor, 2, a connecting frame, 3, a machine seal seat, 4, a seal groove, 5, a sleeve, 6, a locking ring, 7, a compression ring, 8, a seal sleeve, 9, a compression spring, 10, a seal ring, 11, a support ring, 12, a compression sleeve, 13, a limit flange, 14, a first bearing bush, 15, a second bearing bush, 16, a volute, 17, a turbine, 18, a limit groove, 19 and a limit ring.

Detailed Description

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

As shown in fig. 1 and 2, the utility model provides a horizontal pump with easy replacement of mechanical seal, which comprises a motor 1 and a connecting frame 2 covering the output shaft of the motor 1, wherein the connecting frame 2 is cylindrical or rectangular prism-shaped, the connecting frame 2 is fixed on the shell of the motor 1, the height direction of the connecting frame 2 is consistent with the axial direction of the output shaft of the motor 1, and the output shaft of the motor 1 penetrates through the connecting frame 2 and extends outwards; install detachable machine in the link 2 and seal seat 3, machine seals seat 3 and link 2 tops and is parallel, but have the through-hole that power supply machine 1 output shaft runs through on the machine seals seat 3, have certain clearance between machine seals seat 3 and the link 2 tops, and all seted up seal groove 4 on the opposite face of machine seals seat 3 and connecting piece, sleeve pipe 5 is all installed to two seal grooves 4, the sleeve pipe 5 cover is established on motor 1 output shaft, the fixing clip is equipped with locking ring 6 between sleeve pipe 5 and the 4 inner walls of seal groove, it is fixed to make sleeve pipe 5 and machine seal seat 3 locking, avoid sleeve pipe 5 internal rotation in seal groove 4.

A compression ring 7 for compressing the sleeve 5 is further arranged in the sealing groove 4, the compression ring 7, the sleeve 5 and the output shaft of the motor 1 are in clearance sealing fit, a sealing sleeve 8 is sleeved on the compression ring 7 and the output shaft of the motor 1 together, the sealing sleeve 8 is made of rubber, one end of the sealing sleeve 8 is sleeved on the compression ring 7, the other end of the sealing sleeve 8 is sleeved on the output shaft of the motor 1, and the sealing sleeve 8 is in sealing fit with the output end of the motor 1; a compression spring 9 is further sleeved on the output shaft of the motor 1, two ends of the compression spring 9 respectively abut against the end faces of the two compression rings 7, and through the elasticity of the compression spring 9, not only is the sealing sleeve 8 compressed on the compression rings 7, but also the compression rings 7 compress the sleeve 5; because the diameter of the compression ring 7 is larger than that of the output shaft of the motor 1, after the sealing sleeve 8 is sleeved on the compression ring 7, the other end of the sealing sleeve 8 contracts, so that the sealing sleeve 8 is tightly embraced on the output shaft of the motor 1, gaps between the output shaft of the motor 1 and the connecting frame 2 and between the output shaft of the motor 1 and the machine seal seat 3 are sealed, and the sealing effect of the output shaft of the motor 1 is better.

When the seal cover 8 needs to be replaced, the connecting frame 2 and the motor 1 can be detached firstly, the output shaft of the motor 1 is taken down from the connecting frame 2, then the machine seal seat 3 is detached, the seal cover 8 is taken down from the compression ring 7, and the new seal cover 8 can be replaced, so that the seal cover 8 is convenient to replace, the replacement time is greatly shortened, and the replacement cost is reduced.

The sealing groove 4 is a stepped groove, so that the sealing groove 4 is at least provided with a step surface, the inner wall of the sleeve 5 and the outer wall of the sleeve 5 are stepped, the step surface of the outer wall of the sleeve 5 is matched with the step surface of the inner wall of the sealing groove 4, and a sealing ring 10 is compressed between the step surface of the outer wall of the sleeve 5 and the step surface in the sealing groove 4, so that the sleeve 5 and the sealing groove 4 are in sealing fit, and the leakage between the sleeve 5 and the sealing groove 4 is avoided; simultaneously, all set up sleeve pipe 5 and seal groove 4 and be the echelonment, make sleeve pipe 5 behind the effort that receives clamp ring 7 transmission, sleeve pipe 5 can not directly run through seal groove 4, makes sleeve pipe 5's installation more firm.

A support ring 11 is further embedded in the large-diameter end of the sleeve 5, the inner wall of the support ring 11 is in sealing fit with the inner wall of the large-diameter end of the sleeve 5, the end face of the support ring 11 is abutted against the step surface of the inner wall of the sleeve 5, and the compression ring 7 is compressed on the support ring 11, so that the compression force applied to the compression ring 7 is directly applied to the support ring 11 and is applied to the sleeve 5 through the support ring 11, the sleeve 5 is compressed in the seal groove 4, the compression effect of the sleeve 5 is better, and the sealing performance between the sleeve 5 and the seal groove 4 is better; meanwhile, in order to make the sealing performance between the support ring 11 and the sleeve 5 better, a rubber sleeve can be sleeved on the outer wall of the support ring 11, and because the support ring 11 and the sealing sleeve 8 are relatively static, the rubber sleeve between the support ring 11 and the sleeve 5 cannot fail along with the rotation of the output shaft of the motor 1, so that the support ring 11 and the sleeve 5 are always kept sealed.

The compression ring 7 and the support ring 11 are welded and fixed or a sealing gasket is compressed between the support ring 11 and the compression ring 7, so that the compression ring 7 and the support ring 11 are in sealing fit, and no leakage point exists between the compression ring 7 and the support ring 11; meanwhile, the sealing sleeve 8 is in a step shaft sleeve shape, the large-diameter end sleeve of the sealing sleeve 8 is arranged on the compression ring 7, and the end part of the compression spring 9 is compressed on the step surface of the sealing sleeve 8, so that the sealing sleeve 8 is effectively prevented from falling off from the compression ring 7, the sealing sleeve 8 is more stably installed, the sealing effect between the sealing sleeve 8 and the compression ring 7 is better, and the sealing between the output shaft of the motor 1 and the connecting frame 2 and the sealing seat 3 is ensured.

A compression sleeve 12 for compressing the sealing sleeve 8 is further sleeved outside the sealing sleeve 8, the compression sleeve 12 is in a step shaft sleeve shape, a large-diameter end of the compression sleeve 12 is fixedly sleeved on the compression ring 7, and the large-diameter end of the sealing sleeve 8 is compressed between the compression sleeve 12 and the compression ring 7, so that the sealing sleeve 8 is fixed, the sealing sleeve 8 is effectively prevented from generating displacement on the compression ring 7, and the mounting of the sealing sleeve 8 is more stable; meanwhile, the end part of the compression spring 9 is sleeved at the small-diameter end of the compression sleeve 12, the small-diameter end of the compression sleeve 12 can effectively guide the compression spring 9, the compression spring 9 is prevented from deforming under long-term use, the compression spring 9 is effectively prevented from being in direct contact with the sealing sleeve 8, the sealing sleeve 8 is prevented from being broken, and the sealing effect of the sealing sleeve 8 is ensured.

The inner diameter of the small-diameter end of the compression sleeve 12 is smaller than the outer diameter of the small-diameter end of the sealing sleeve 8, so that the small-diameter end of the compression sleeve 12 cannot influence the small-diameter end of the sealing sleeve 8, the small-diameter end of the sealing sleeve 8 can deform to a certain extent, the small-diameter end of the sealing sleeve 8 can be sealed and clasped on the output shaft of the motor 1 all the time, and the sealing effect between the output shaft of the motor 1 and the connecting frame 2 and between the output shaft of the motor 1 and the machine seal seat 3 is better.

The inner wall of the connecting frame 2 is also provided with a limit flange 13, the limit flange 13 and the inner wall of the connecting frame 2 are integrally formed, and the mechanical seal seat 3 is fixed on the limit flange 13 through a screw, so that the mechanical seal seat 3 is more convenient to mount and dismount, and the seal sleeve 8 is convenient to replace in the later period.

Still be equipped with first axle bush 14 on the machine seals seat 3, first axle bush 14 and machine seal seat 3 structure as an organic whole, the axis direction of first axle bush 14 is unanimous with the axis direction of 1 output shaft of motor, and 2 inner walls of link frame are equipped with second axle bush 15, for the convenience fixed to second axle bush 15, still can set second axle bush 15 to the L type, the vertical part of second axle bush 15 is the same with first axle bush 14 structure, and the horizontal part of second axle bush 15 passes through screw or welded fastening on link frame 2, first axle bush 14 and second axle bush 15 embrace through the fix with screw and close to 1 output shaft of motor, make 1 output shaft of motor spacing, prevent effectively that 1 output shaft of motor from producing in the rotation process and rocking, make 1 output shaft of motor's axiality higher.

The connecting frame 2 is also provided with a volute 16, the volute 16 is provided with a water inlet and a water outlet, the water inlet is positioned in the center of the volute 16, and the water outlet is positioned on the side wall of the volute 16; the output shaft of the motor 1 is fixedly provided with a turbine 17, the turbine 17 is positioned in the volute 16, the inlet of the turbine 17 is matched with the water inlet on the volute 16, the motor 1 drives the turbine 17 to rotate, so that water enters the volute 16 through the water inlet and is discharged out of the volute 16 from the water outlet, and pumping and conveying of the water are achieved.

Have spacing groove 18 in the volute 16, and have on the turbine 17 with 18 complex spacing rings 19 of spacing groove, spacing rings 19 insert and establish in

spacing groove

18, and 19 outer walls of spacing rings and 18 cell wall clearance fit of spacing groove, make 1 output shaft of motor when driving turbine 17 axle, through 19 and 18 cooperation of spacing groove of spacing rings, effectively prevent the swing of turbine 17, make turbine 17 higher at the rotation in-process precision, make the utility model discloses an efficiency is higher.

In the use process of the utility model, the sleeve 5, the support ring 11, the compression ring 7, the seal sleeve 8 and the compression sleeve 12 are all in a static state, and the small-diameter end of the seal sleeve 8 is compressed and fixed, and the small-diameter end of the seal sleeve 8 is sealed and clasped on the output shaft of the motor 1 all the time through self contraction, so that the sealing effect between the seal sleeve 8 and the output shaft of the motor 1 is better; meanwhile, the sealing groove 4, the sleeve 5, the support ring 11, the compression ring 7, the seal sleeve 8 and the compression sleeve 12 are all in a sealing state, so that leakage cannot be generated between the output shaft of the motor 1 and the connecting frame 2 and between the output shaft of the motor 1 and the machine seal seat 3.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal pump with a mechanical seal which is convenient and easy to replace is characterized by comprising a motor (1) and a connecting frame (2) which covers an output shaft of the motor (1); a detachable mechanical seal seat (3) is installed in the connecting frame (2), a sealing groove (4) is formed in the opposite surface of the mechanical seal seat (3) and the connecting piece, a sleeve (5) is further installed in the sealing groove (4), and a locking ring (6) is fixedly clamped between the sleeve (5) and the inner wall of the sealing groove (4); still install clamp ring (7) that compress tightly sleeve pipe (5) in seal groove (4), the common cover is equipped with seal cover (8) on clamp ring (7) and motor (1) output shaft, and still overlaps on motor (1) output shaft and is equipped with and compresses tightly clamp spring (9) on clamp ring (7) with seal cover (8).

2. The horizontal pump with the easily replaced mechanical seal is characterized in that the seal groove (4) is a stepped groove, the inner wall of the sleeve (5) and the outer wall of the sleeve (5) are stepped, and the seal ring (10) is compressed between the outer wall of the sleeve (5) and the seal groove (4).

3. The horizontal pump with the easily replaceable mechanical seal as claimed in claim 2, characterized in that a support ring (11) is embedded in the large-diameter end of the sleeve (5), and the compression ring (7) is compressed on the support ring (11).

4. The horizontal pump with the mechanical seal convenient and easy to replace as claimed in claim 1, characterized in that the sealing sleeve (8) is in a stepped shaft sleeve shape, the large-diameter end of the sealing sleeve (8) is sleeved on the compression ring (7), and the compression spring (9) is compressed on the stepped surface of the sealing sleeve (8).

5. The horizontal pump with the mechanical seal convenient to replace as claimed in claim 1 or 4, characterized in that a compression sleeve (12) for compressing the seal sleeve (8) is further sleeved outside the seal sleeve (8), the compression sleeve (12) is in a stepped shaft sleeve shape, and the end of the compression spring (9) is sleeved at the small diameter end of the compression sleeve (12).

6. The horizontal pump with the easily replaceable mechanical seal is characterized in that the inner diameter of the small-diameter end of the compression sleeve (12) is smaller than the outer diameter of the small-diameter end of the sealing sleeve (8).

7. The horizontal pump with the easily replaced mechanical seal is characterized in that a limiting flange (13) is further arranged on the inner wall of the connecting frame (2), and the mechanical seal seat (3) is fixed on the limiting flange (13).

8. The horizontal pump with the easily replaced mechanical seal is characterized in that a first bearing bush (14) is further arranged on the mechanical seal seat (3), a second bearing bush (15) is arranged on the inner wall of the connecting frame (2), and the first bearing bush (14) and the second bearing bush (15) are jointly clasped to an output shaft of the motor (1).

9. The horizontal pump with the easily replaced mechanical seal is characterized in that a volute (16) is further mounted on the connecting frame (2), a turbine (17) is fixedly mounted on an output shaft of the motor (1), and the turbine (17) is located in the volute (16).

10. The horizontal pump with the easily replaced mechanical seal is characterized in that a limiting groove (18) is formed in the volute (16), a limiting ring (19) matched with the limiting groove (18) is arranged on the turbine (17), and the limiting ring (19) is movably inserted in the limiting groove (18).