Leakage-proof structure for circulating pump

Abstract

The utility model relates to a leakproof structure for a circulating pump in the field of circulating pumps, a water outlet end is arranged on a circulating pump body, the leakproof structure further comprises a water delivery pipe which is detachably connected with the water outlet end, a sealing ring is fixedly connected to the water outlet end, a sealing gasket attached to the inner wall of the water outlet end is arranged on the outer wall of the sealing ring, and the water delivery pipe is detachably connected with the water outlet end. The outer wall of the sealing ring is connected with an annular water bag in a lining mode. The multiple sealing grooves are distributed in the inner wall of the water conveying pipe at equal intervals; the pressurizing component is arranged in the water outlet end, when the circulating pump body conveys liquid to the water conveying pipe through the water outlet end, the liquid flowing through the water outlet end impacts the pressurizing component and then pressurizes the interior of the water bag, and the water bag extrudes the sealing gasket after expanding so that the sealing gasket can be tightly attached to the inner wall of the water conveying pipe; by the adoption of the structure, multiple and automatically-adjusted sealing is achieved, liquid pressure changes are effectively handled, leakage is prevented, the working efficiency of the circulating pump is improved, and meanwhile energy loss and environmental pollution risks are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of leakage-proof structures for circulating pump, in particular to a kind of leakage-proof structures for circulating pump applied to circulating pump field. BACKGROUND

[0002] Circulating pump refers to the pump for circulating liquid in the device, such as reaction, absorption, separation and absorption liquid regeneration, and it is mainly composed of motor and impeller. The motor drives the impeller to rotate, which can make the impeller rotate and generate centrifugal force to discharge and pressurize the water.

[0003] Chinese utility model patent CN202021439132.1 specification discloses a kind of high-temperature-resistant circulating pumps, including connecting pipe, the first limit ring and the second limit ring are fixed in the connecting pipe and water outlet respectively, the first limit ring bottom is equipped with movable seat, and movable seat and first limit ring are movably connected, the second limit ring surface is fixed with limit slot, the limit slot surface is equipped with spring, and spring and limit slot are movably connected, the spring is in the water outlet, and spring is embedded in movable seat, and spring and movable seat inner top surface are fixedly connected, sealing structure is added between connecting pipe and water inlet, when connecting pipe is aligned with water inlet, the bottom of movable seat extrudes the spring in the water outlet, the limit slot on the second limit ring supports the bottom of spring, when the connecting disc of water outlet is compressed to the connecting disc of connecting pipe, tighten bolt, fix connecting pipe and water outlet, achieve the sealing between connecting pipe and water outlet, prevent liquid leakage.

[0004] The above-mentioned patent also has the following defects: when the circulating pump is working, the liquid pressure may fluctuate due to various reasons, there is no structure for automatically adjusting the sealing performance, and the sealing effect may be affected, for example, when the pressure suddenly increases, the existing sealing structure may not be able to adjust in time, causing gaps in the sealing part, and further causing liquid leakage. SUMMARY

[0005] In view of the above prior art, the technical problem to be solved by the utility model is that the liquid pressure of the circulating pump is easy to fluctuate when working, the existing sealing structure has no automatic adjusting function, and cannot be adjusted in time when the pressure suddenly increases, which may cause leakage due to gaps in the sealing part.

[0006] To solve the above problems, the utility model provides a kind of anti-leakage structure for circulating pump, and circulating pump body is provided with water outlet, still include: water pipe, with water outlet dismounting connection, wherein, fixedly connected with sealing ring on water outlet, sealing ring's outer wall is provided with the sealing washer that is in line with water outlet inner wall, the outer wall of sealing ring is lined with and is connected with the water bag that is annularly arranged;Multiple sealing grooves are equidistantly distributed on the inner wall of water pipe;Pressure-increasing component is set in water outlet, wherein, when circulating pump body is transported liquid to water pipe by water outlet, the liquid that flows through water outlet impacts pressure-increasing component, and then pressurizes in water bag, water bag extrudes sealing washer after expansion, so that it is closely attached with the inner wall of water pipe, and sealing washer generates deformation and is embedded in sealing groove.

[0007] In the above anti-leakage structure for circulating pump, the liquid impact pressurization is used to make the water bag expand and extrude the sealing washer embedded in the annular sealing groove, form the multiple seals of automatic adjustment, can respond to pressure change, prevent leakage, can improve the efficiency of circulating pump, reduce energy consumption and pollution risk.

[0008] As a further improvement of the present application, the pressure-increasing component includes a pressure-increasing cylinder and a piston disc slidingly connected in the pressure-increasing cylinder, hydraulic oil is injected into the pressure-increasing cylinder above the piston disc, a push block is slidingly connected in the water outlet, the push block is fixedly connected with the lower end surface of the piston disc through a connecting rod, and the pressure-increasing cylinder is fixedly installed on the inner wall of the water outlet through a connecting ring;It also includes a liquid delivery tube and an elastic reset member, one end of the liquid delivery tube is in communication with the pressure-increasing cylinder, the other end is in communication with the water bag, and the elastic reset member is arranged in the pressure-increasing cylinder;When the circulating pump body stops working, the elastic reset member pushes the piston disc to move and reset.

[0009] As a further improvement of the present application, the elastic reset member includes a second spring, one end of the second spring is fixedly connected with the piston disc, and the other end is fixedly connected with the inner wall of the lower end of the pressure-increasing cylinder.

[0010] As a further improvement of the present application, it also includes a liquid injection pipe for injecting hydraulic oil into the pressure-increasing cylinder, the liquid injection pipe is in communication with the pressure-increasing cylinder, and a one-way valve is arranged on the liquid injection pipe.

[0011] As another improvement of the present application, a fixed disc is fixedly installed on the water outlet, a connecting disc is fixedly installed on the water pipe, a plug-in block is fixedly connected on the fixed disc, a plug-in hole corresponding to the plug-in block is formed on the connecting disc, a sliding groove is formed on the plug-in block, a fixed block is slidingly connected in the sliding groove, a first spring is arranged in the sliding groove, one end of the first spring is fixedly connected with the fixed block, and the other end is fixedly connected with the inner wall of the sliding groove, and the fixed block is clamped on the surface of the connecting disc.

[0012] As a further improvement of the present application, the sealing grooves are annularly arranged around the inner wall of the water pipe.

[0013] In summary, the application uses liquid impact pressurizing components to expand the water bag to press the sealing pad, which is tightly attached to the inner wall of the water delivery pipe and embedded in the annular sealing groove, forming multiple and automatic adjustment seals, which can cope with changes in liquid pressure, effectively prevent leakage, improve the working efficiency of the circulating pump, and reduce energy loss and environmental pollution risk. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Structure diagram of the first embodiment of the application;

[0015] Figure 2 Structure diagram of the first embodiment of the application;

[0016] Figure 3 Enlarged view of part A of the first embodiment of the application; Figure 2 Enlarged view of part A of the first embodiment of the application;

[0017] Figure 4 Water delivery pipe sectional view of the first embodiment of the application.

[0018] Reference numerals in the drawings:

[0019] 1, circulating pump body; 101, water outlet; 102, water delivery pipe; 2, fixed disc; 201, connecting disc; 202, plug-in block; 203, sliding groove; 204, spring one; 205, fixed block; 3, sealing ring; 301, sealing pad; 4, pressurizing cylinder; 401, piston disc; 402, spring two; 403, connecting rod; 404, push block; 405, liquid delivery pipe; 406, water bag; 407, sealing groove; 5, liquid injection pipe. DETAILED DESCRIPTION

[0020] The first embodiment of the application will be described in detail below in conjunction with the drawings.

[0021] First embodiment:

[0022] Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a kind of leakage-proof structure for circulating pump, circulating pump body 1 is provided with water outlet end 101, it further includes: water pipe 102, with water outlet end 101 detachable connection, wherein, water outlet end 101 is fixedly connected with sealing ring 3, the outer wall of sealing ring 3 is provided with the sealing pad 301 that is attached with the inner wall of water outlet end 101, the outer wall of sealing ring 3 is lined with the water bag 406 that is arranged in ring type;Multiple sealing grooves 407, equidistantly distribute on the inner wall of water pipe 102;Boosting component, it is set in water outlet end 101, wherein, when circulating pump body 1 is transported liquid by water outlet end 101 to water pipe 102, the liquid that flows through water outlet end 101 impacts boosting component, and then pressurizes in water bag 406, water bag 406 is extruded sealing pad 301 after expansion, so that it is closely attached with the inner wall of water pipe 102, simultaneously, sealing pad 301 generates deformation and is embedded in sealing groove 407.

[0023] Boosting component includes boosting cylinder 4 and piston disc 401 slidingly connected in boosting cylinder 4, the hydraulic oil is injected in boosting cylinder 4 above piston disc 401, push block 404 is slidingly connected in water outlet end 101, push block 404 is fixedly connected with the lower end surface of piston disc 401 by connecting rod 403, and boosting cylinder 4 is fixedly installed on the inner wall of water outlet end 101 by connecting ring;It further includes infusion tube 405, elastic reset piece, one end of infusion tube 405 is communicated with boosting cylinder 4, the other end is communicated with water bag 406, and elastic reset piece is arranged in boosting cylinder 4, when circulating pump body 1 stops working, elastic reset piece pushes piston disc 401 and moves reset.

[0024] Elastic reset piece includes spring two 402, one end of spring two 402 is fixedly connected with piston disc 401, and the other end is fixedly connected with the lower end portion inner wall of boosting cylinder 4.

[0025] When the circulating pump body 1 starts to work, the liquid flows from the circulating pump body 1 into the water outlet end 101 and is transported to the water conveying pipe 102 through the water outlet end 101. In the process of liquid flow, the push block 404 is impacted, and the push block 404 is driven by the connecting rod 403 to slide the piston disc 401 upward in the pressure cylinder 4 under the action of the impact force. Since the hydraulic oil is injected above the piston disc 401 in the pressure cylinder 4, the upward movement of the piston disc 401 compresses the hydraulic oil. The hydraulic oil is pressed into the water bag 406 through the liquid conveying pipe 405 under the action of the pressure. The water bag 406 gradually expands under the injection of the hydraulic oil, and then squeezes the sealing gasket 301, so that the sealing gasket 301 is tightly attached to the inner wall of the water conveying pipe 102 under the extrusion of the water bag 406, and at the same time, the sealing gasket 301 is deformed due to its own elasticity and embedded in the sealing groove 407 on the inner wall of the water conveying pipe 102, forming multiple seals. Compared with the traditional single static seal, the sealing degree can be automatically adjusted according to the pressure of the liquid during the work of the circulating pump. Even in the case of changes in liquid flow or pressure, the leakage of liquid from the connection between the water outlet end 101 and the water conveying pipe 102 can be effectively prevented, the working efficiency of the circulating pump is improved, the energy loss caused by leakage is reduced, and the pollution risk to the surrounding environment is also reduced.

[0026] When the circulating pump body 1 stops working, there is no longer liquid impacting the push block 404. At this time, the compressed spring two 402 begins to release the elastic potential energy, and the spring two 402 pushes the piston disc 401 to move downward and reset by virtue of its own elastic force. With the downward movement of the piston disc 401, the pressure in the pressure cylinder 4 changes, and the hydraulic oil in the water bag 406 flows back to the pressure cylinder 4 through the liquid conveying pipe 405 under the action of the pressure difference. The water bag 406 gradually returns to its original state, and the sealing gasket 301 also recovers part of the deformation, reducing the degree of adhesion to the inner wall of the water conveying pipe 102.

[0027] In summary, by using the spring two 402 as an elastic reset member, the structure is simple and reliable, and the piston disc 401 can be accurately reset, ensuring that the water bag 406 recovers in time, preparing for the sealing and pressurization of the next start of the circulating pump, and ensuring that the entire anti-leakage structure can work stably and repeatedly for multiple times, improving the reliability and durability of the anti-leakage structure of the circulating pump, and prolonging the service life of the circulating pump.

[0028] Figure 2 It is shown that it also includes a liquid injection pipe 5 for injecting hydraulic oil into the pressure cylinder 4. The liquid injection pipe 5 is in communication with the pressure cylinder 4, and a one-way valve is arranged on the liquid injection pipe 5.

[0029] Through the arrangement of the liquid injection pipe 5 and the one-way valve, the replenishment and maintenance of the hydraulic oil in the pressure cylinder 4 are facilitated, ensuring the normal work of the pressurizing component. Even in the case of a small amount of loss of hydraulic oil due to various reasons during long-term use, the hydraulic oil can be replenished in time to maintain the normal pressurizing function of the water bag 406, so as to ensure that the anti-leakage structure of the circulating pump always maintains good sealing effect, prolonging the service life of the entire anti-leakage structure.

[0030] Figure 1 、 Figure 2 、 Figure 3 As shown, the fixed disc 2 is fixedly installed on the water outlet end 101, the connecting disc 201 is fixedly installed on the water pipe 102, the plug-in block 202 is fixedly connected on the fixed disc 2, the plug-in hole corresponding to the plug-in block 202 is formed on the connecting disc 201, the sliding groove 203 is formed on the plug-in block 202, the fixed block 205 is slidably connected in the sliding groove 203, the spring one 204 is arranged in the sliding groove 203, one end of the spring one 204 is fixedly connected with the fixed block 205, and the other end is fixedly connected with the inner wall of the sliding groove 203, and the fixed block 205 is clamped on the surface of the connecting disc 201.

[0031] When it is needed to connect the water pipe 102 and the water outlet end 101, the fixed block 205 is pressed to slide into the sliding groove 203, and the spring one 204 is compressed, when the fixed block 205 completely enters the sliding groove 203, the plug-in block 202 is inserted into the plug-in hole of the connecting disc 201, when the plug-in block 202 is completely inserted into the plug-in hole, the surface of the connecting disc 201 at the corresponding position of the fixed block 205 is not blocked, the fixed block 205 is popped out under the elastic force of the spring one 204, and is clamped on the surface of the connecting disc 201, so that the water pipe 102 and the water outlet end 101 are fixedly connected;

[0032] When it is needed to disassemble the water pipe 102, the fixed block 205 is pressed to slide into the sliding groove 203, and the spring one 204 is compressed, when the fixed block 205 completely enters the sliding groove 203, the plug-in block 202 is pulled out from the plug-in hole, and the disassembly is completed;

[0033] In summary, the above-mentioned disassembly and assembly mode of the water pipe 102 and the water outlet end 101 is simple in structure and convenient to operate, the water pipe 102 and the water outlet end 101 can be quickly connected and disassembled without additional tools, the installation, maintenance and repair of the circulating pump are facilitated, meanwhile, the clamping mode of the fixed block 205 can ensure the firmness of the connection between the water pipe 102 and the water outlet end 101, prevent the connection from being loosened due to the vibration caused by the liquid flow during the working process of the circulating pump, and affect the normal working of the anti-leakage structure.

[0034] Figure 3 、 Figure 4 As shown, the sealing groove 407 is annularly arranged around the inner wall of the water pipe 102;

[0035] When the circulating pump body 1 works, the water bag 406 expands and presses the sealing gasket 301, and after the sealing gasket 301 is deformed, the sealing gasket 301 can be uniformly embedded in the sealing groove 407 to form a continuous sealing ring, realize the all-around sealing of the connecting place of the water outlet end 101 and the water conveying pipe 102, effectively prevent the liquid from leaking from the circumferential direction of the water outlet end 101 and the water conveying pipe 102, further improve the sealing performance of the anti-leakage structure of the circulating pump, and guarantee the stable operation of the circulating pump.

[0036] In combination with the current actual demand, the above-mentioned embodiments adopted by the application are not limited to this, various changes made within the knowledge range of the skilled person in the art without departing from the concept of the application still fall within the protection range of the application.

Claims

1. A leak-proof structure for a circulating pump, characterized in that, The circulating pump body (1) is provided with a water outlet end (101), and further comprises: a water delivery pipe (102) detachably connected with the water outlet end (101); wherein the water outlet end (101) is fixedly connected with a sealing ring (3), the outer wall of the sealing ring (3) is provided with a sealing gasket (301) abutting against the inner wall of the water outlet end (101), and the outer wall of the sealing ring (3) is lined with a water bag (406) arranged in a ring shape; a plurality of sealing grooves (407) equidistantly distributed on the inner wall of the water delivery pipe (102); a pressure boosting component arranged in the water outlet end (101); wherein when the circulating pump body (1) delivers liquid to the water delivery pipe (102) through the water outlet end (101), the liquid flowing through the water outlet end (101) impacts the pressure boosting component, thereby boosting the pressure in the water bag (406), the water bag (406) expands to press the sealing gasket (301) to tightly abut against the inner wall of the water delivery pipe (102), and the sealing gasket (301) is deformed and embedded in the sealing grooves (407).

2. The anti-leak structure for a circulating pump according to claim 1, characterized in that: The pressure boosting component comprises a pressure boosting cylinder (4) and a piston disc (401) slidingly connected in the pressure boosting cylinder (4), the pressure boosting cylinder (4) is filled with hydraulic oil above the piston disc (401), the water outlet end (101) is slidingly connected with a push block (404), the push block (404) is fixedly connected with the lower end surface of the piston disc (401) through a connecting rod (403), and the pressure boosting cylinder (4) is fixedly installed on the inner wall of the water outlet end (101) through a connecting ring; further comprising a liquid delivery pipe (405) and an elastic reset member, one end of the liquid delivery pipe (405) is connected with the pressure boosting cylinder (4), the other end is connected with the water bag (406), and the elastic reset member is arranged in the pressure boosting cylinder (4) and pushes the piston disc (401) to move and reset when the circulating pump body (1) stops working.

3. The anti-leak structure for a circulating pump according to claim 2, characterized in that: The elastic reset member comprises a second spring (402), one end of the second spring (402) is fixedly connected with the piston disc (401), and the other end is fixedly connected with the inner wall of the lower end of the pressure boosting cylinder (4).

4. The anti-leak structure for a circulating pump according to claim 2, characterized in that: further comprising a liquid injection pipe (5) for injecting hydraulic oil into the pressure boosting cylinder (4), the liquid injection pipe (5) is connected with the pressure boosting cylinder (4), and the liquid injection pipe (5) is provided with a one-way valve.

5. The anti-leak structure for a circulating pump according to claim 1, characterized in that: The water outlet end (101) is fixedly installed with a fixed disc (2), the water delivery pipe (102) is fixedly installed with a connecting disc (201), the fixed disc (2) is fixedly connected with a plug-in block (202), the connecting disc (201) is provided with a plug-in hole corresponding to the plug-in block (202), the plug-in block (202) is provided with a sliding groove (203), the sliding groove (203) is slidingly connected with a fixed block (205), the sliding groove (203) is provided with a first spring (204), one end of the first spring (204) is fixedly connected with the fixed block (205), the other end is fixedly connected with the inner wall of the sliding groove (203), and the fixed block (205) is clamped on the surface of the connecting disc (201).

6. The anti-leak structure for a circulating pump according to claim 1, characterized in that: The sealing groove (407) is annularly arranged around the inner wall of the water delivery pipe (102).

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