A shaft seal circulating cooling device

Abstract

This utility model discloses a shaft seal circulating cooling device, including: a cooling mechanism installed on the pump body, used to circulate cooling water from the cooling water tank to the water cooling channel to cool and reduce the temperature of the fixed ring; this utility model, through the design of the shaft seal cover, shaft seal cover, water cooling channel and cooling mechanism, etc., after the shaft seal cover and shaft seal cover are installed, the shaft seal cover and shaft seal cover have water cooling channels, and the cooling mechanism circulates cooling water to the water cooling channel. The cooling water circulation cools the fixed ring, which can efficiently remove the heat generated by the fixed ring during operation, prevent the pump parts from burning, extend the service life of the parts, avoid the fixed ring from aging due to high temperature, reduce the replacement frequency, reduce maintenance costs, at the same time ensure sealing performance, prevent leakage caused by overheating failure, improve the stability of pump operation, and maintain a high-efficiency working state, avoiding the efficiency decline caused by heat accumulation.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a shaft seal circulating cooling device. Background Technology

[0002] In industrial production, pumps are critical equipment, and their performance and stability are of paramount importance. During operation, traditional pumps generate significant heat due to the continuous operation of components such as the retaining ring. If this heat cannot be dissipated in time, the retaining ring may experience material aging and seal failure due to overheating. This not only increases the frequency of component replacement and maintenance costs but also reduces the pump's operational stability and efficiency due to leakage and other issues. Therefore, we need to propose a shaft seal circulating cooling device. Utility Model Content

[0003] The purpose of this utility model is to provide a shaft seal circulation cooling device to solve the problems mentioned in the background art, such as the aging of materials and seal failure caused by overheating of the fixed ring during pump operation, which leads to damage to pump parts, increased replacement frequency and maintenance costs, and reduced pump operation stability and efficiency due to leakage and other problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A shaft seal circulating cooling device includes: a pump body; a shaft seal cover and a shaft seal shield fixedly installed inside the pump body, one side of the shaft seal shield abutting against the side of the shaft seal cover, and a water cooling channel for cooling water flow between the shaft seal cover and the shaft seal shield; a fixing ring fixedly installed inside the shaft seal shield and disposed within the water cooling channel; a cooling water tank installed on the top of the pump body; and a cooling mechanism installed on the pump body for circulating cooling water from the cooling water tank to the water cooling channel to cool and reduce the temperature of the fixing ring.

[0006] Preferably, the cooling mechanism includes a water inlet, a water outlet, a first connecting pipe, a second connecting pipe, and a micro water pump. The water inlet is connected to one side of the cooling water tank, and the water outlet is connected to the other side of the cooling water tank. The water inlet is connected to one end of the first connecting pipe. The micro water pump is fixedly installed on the side of the pump body. The pumping end of the micro water pump is connected to the water cooling channel. The other end of the first connecting pipe is connected to the water outlet of the micro water pump. The water outlet is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the water cooling channel.

[0007] Preferably, the shaft seal cover has a first mounting groove and a third mounting groove on its side. A first sealing ring is installed in the first mounting groove, and the surface of the first sealing ring contacts the side of the fixing ring. A sealing ring is provided in the third mounting groove, and the surface of the sealing ring contacts the side of the shaft seal cover.

[0008] Preferably, the surface of the fixing ring is provided with a second mounting groove, and a second sealing ring is provided in the second mounting groove, the second sealing ring being in contact with the inner wall of the shaft seal cover.

[0009] Preferably, the pump also includes a motor installed on the side of the pump body, the output shaft of which is fixedly mounted with a transmission rod, the transmission rod passing through the shaft seal cover, shaft seal cover, fixing ring and front sealing ring, and extending into the interior of the pump body, and an impeller is fixedly mounted on the transmission rod.

[0010] Preferably, a front sealing ring is fixedly installed on the impeller, and one end of the front sealing ring contacts the side of the fixed ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model, through the design of a shaft seal cover, shaft seal shield, water cooling channel, and cooling mechanism, etc., provides a water cooling channel after the shaft seal cover and shaft seal shield are installed. The cooling mechanism circulates cooling water into the water cooling channel, which effectively removes the heat generated by the fixed ring during operation, preventing damage to pump components, extending component life, avoiding aging of the fixed ring due to high temperature, reducing replacement frequency, lowering maintenance costs, ensuring sealing performance, preventing leakage caused by overheating failure, improving pump operation stability, maintaining high-efficiency operation, and avoiding efficiency decline due to heat accumulation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model from the right side;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 This utility model Figure 3 A magnified structural diagram of region A in the middle.

[0017] In the diagram: 1. Pump body; 2. Motor; 3. Cooling water tank; 4. Inlet; 5. Outlet; 6. First connecting pipe; 7. Second connecting pipe; 8. Shaft seal cover; 9. Shaft seal guard; 10. Water cooling channel; 11. Fixing ring; 12. First mounting groove; 13. First sealing ring; 14. Second mounting groove; 15. Second sealing ring; 16. Front sealing ring; 17. Impeller; 18. Inlet pipe; 19. Water delivery pipe; 20. Miniature water pump; 21. Sealing ring; 22. Third mounting groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution:

[0020] A shaft seal circulation cooling device includes: a pump body 1; a shaft seal cover 8 and a shaft seal shield 9 fixedly installed inside the pump body 1, with one side of the shaft seal shield 9 abutting against the side of the shaft seal cover 8, and a water cooling channel 10 for cooling water flow between the shaft seal cover 8 and the shaft seal shield 9; a fixing ring 11 fixedly installed inside the shaft seal shield 9, and the fixing ring 11 is located inside the water cooling channel 10; a cooling water tank 3 installed on the top of the pump body 1; and a cooling mechanism installed on the pump body 1 for circulating cooling water from the cooling water tank 3 to the water cooling channel 10 to cool and reduce the temperature of the fixing ring 11.

[0021] It should be noted that the cooling water tank 3 is made of food-grade PP material with an internal antibacterial coating, which can inhibit the growth of microorganisms such as Legionella and extend the water change cycle in the cooling water tank 3.

[0022] In an optional embodiment: such as Figures 1 to 2 As shown, the cooling mechanism includes an inlet 4, an outlet 5, a first connecting pipe 6, a second connecting pipe 7, and a micro water pump 20. The inlet 4 is connected to one side of the cooling water tank 3, and the outlet 5 is connected to the other side of the cooling water tank 3. The inlet 4 is connected to one end of the first connecting pipe 6. The micro water pump 20 is fixedly installed on the side of the pump body 1. The pumping end of the micro water pump 20 is connected to the water cooling channel 10. The other end of the first connecting pipe 6 is connected to the outlet end of the micro water pump 20. The outlet 5 is connected to one end of the second connecting pipe 7, and the other end of the second connecting pipe 7 is connected to the water cooling channel 10.

[0023] It should be noted that the inlet 4, outlet 5, first connecting pipe 6, and second connecting pipe 7 work in conjunction with the micro water pump 20 to circulate and transport cooling water into the water cooling channel 10 to cool and reduce the temperature of the fixed ring 11.

[0024] The first connecting pipe 6 and the second connecting pipe 7 are made of food-grade 304 stainless steel, which not only has a thermal conductivity of up to 16.2W / (m・K), far exceeding that of ordinary plastic pipes, but also has the characteristics of corrosion resistance and temperature difference resistance, and can adapt to extreme working conditions from -40℃ to 120℃.

[0025] In an optional embodiment: such as Figure 4 As shown, the shaft seal cover 8 has a first mounting groove 12 and a third mounting groove 22 on its side. A first sealing ring 13 is installed in the first mounting groove 12, and the surface of the first sealing ring 13 contacts the side of the fixing ring 11. A sealing ring 21 is provided in the third mounting groove 22, and the surface of the sealing ring 21 contacts the side of the shaft seal cover 9.

[0026] It should be noted that the first sealing ring 13 is used to seal the connection between the shaft seal cover 8 and the fixed ring 11, thereby improving the sealing effect between the shaft seal cover 8 and the fixed ring 11.

[0027] By setting the sealing ring 21, the connection between the shaft seal cover 8 and the fixing ring 11 can be sealed again. By sealing the connection between the shaft seal cover 8 and the fixing ring 11, the leakage of cooling water from the water cooling channel 10 can be prevented.

[0028] The first sealing ring 13 and the sealing ring 21 are made of fluororubber, with a temperature range of -20℃ to 200℃. They can still maintain elasticity under the continuous scouring of the water cooling channel 10. Their cross-section is designed as a stepped shape, and a sealing accuracy of 0.01mm is achieved through double extrusion.

[0029] In an optional embodiment: such as Figure 3 and Figure 4 As shown, a second mounting groove 14 is provided on the surface of the fixing ring 11, and a second sealing ring 15 is provided in the second mounting groove 14. The second sealing ring 15 is in contact with the inner wall of the shaft seal cover 9.

[0030] It should be noted that by setting the second sealing ring 15, a composite structure of polytetrafluoroethylene and nitrile rubber is selected, which can seal the space between the fixing ring 11 and the inner wall of the shaft seal cover 9.

[0031] In an optional embodiment: such as Figure 3 and Figure 4 As shown, it also includes a motor 2 installed on the side of the pump body 1. The output shaft of the motor 2 is fixedly mounted with a transmission rod. The transmission rod passes through the shaft seal cover 8, the shaft seal cover 9, the fixing ring 11 and the front sealing ring 16, and extends into the interior of the pump body 1. An impeller 17 is fixedly mounted on the transmission rod.

[0032] It should be noted that a water inlet pipe 18 is connected to one side of the pump body 1, and a water delivery pipe 19 is connected to the top of the pump body 1. When the impeller 17 is rotated by the drive rod driven by the motor 2, the liquid can enter the pump body 1 through the water inlet pipe 18 and then be discharged through the water delivery pipe 19.

[0033] In an optional embodiment: such as Figure 4As shown, a front sealing ring 16 is fixedly installed on the impeller 17, and one end of the front sealing ring 16 contacts the side of the fixed ring 11.

[0034] It should be noted that, through the setting of the front sealing ring 16, the front sealing ring 16 is made of silicon carbide ceramic material, and the surface is mirror polished (roughness Ra≤0.02μm). The contact pressure with the fixed ring 11 is stable at 0.3-0.5MPa, which can reduce the coefficient of friction (≤0.08) and form an oxide protective layer under instantaneous high temperature, extending the service life of the friction pair to more than 8000 hours.

[0035] The usage process of this utility model is as follows: When the fixed ring 11 heats up during pump operation and needs to be cooled down, the micro water pump 20 is started. The micro water pump 20 draws cooling water into the water cooling channel 10. The cooling water is transported to the cooling water tank 3 through the first connecting pipe 6 and the water inlet 4. The cooling water in the cooling water tank 3 can be transported to the water cooling channel 10 through the water outlet 5 and the second connecting pipe 7. The fixed ring 11 can be cooled down by the cooling water entering the water cooling channel 10.

[0036] By circulating cooling of the fixed ring 11, the heat generated during operation can be efficiently removed, preventing damage to pump components, extending component life, avoiding aging of the fixed ring 11 due to high temperature, reducing replacement frequency, lowering maintenance costs, ensuring sealing performance, preventing leakage caused by overheating failure, improving pump operation stability, and maintaining high-efficiency working state, avoiding efficiency decline caused by heat accumulation.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaft seal circulating cooling device, characterized in that, include: Pump body (1); A shaft seal cover (8) and a shaft seal cover (9) are fixedly installed inside the pump body (1). One side of the shaft seal cover (9) is pressed against the side of the shaft seal cover (8). A water cooling channel (10) for cooling water flow is left between the shaft seal cover (8) and the shaft seal cover (9). The retaining ring (11) is fixedly installed inside the shaft seal cover (9), and the retaining ring (11) is located inside the water cooling channel (10); Cooling water tank (3), top of pump body (1) is installed; The cooling mechanism is installed on the pump body (1) and is used to circulate the cooling water in the cooling water tank (3) to the water cooling channel (10) to cool and reduce the temperature of the fixed ring (11).

2. The shaft seal circulating cooling device according to claim 1, characterized in that: The cooling mechanism includes an inlet (4), an outlet (5), a first connecting pipe (6), a second connecting pipe (7), and a micro water pump (20). The inlet (4) is connected to one side of the cooling water tank (3), and the outlet (5) is connected to the other side of the cooling water tank (3). The inlet (4) is connected to one end of the first connecting pipe (6). The micro water pump (20) is fixedly installed on the side of the pump body (1). The pumping end of the micro water pump (20) is connected to the water cooling channel (10). The other end of the first connecting pipe (6) is connected to the outlet end of the micro water pump (20). The outlet (5) is connected to one end of the second connecting pipe (7), and the other end of the second connecting pipe (7) is connected to the water cooling channel (10).

3. The shaft seal circulating cooling device according to claim 1, characterized in that: The shaft seal cover (8) has a first mounting groove (12) and a third mounting groove (22) on its side. A first sealing ring (13) is installed in the first mounting groove (12). The surface of the first sealing ring (13) is in contact with the side of the fixing ring (11). A sealing ring (21) is provided in the third mounting groove (22). The surface of the sealing ring (21) is in contact with the side of the shaft seal cover (9).

4. The shaft seal circulating cooling device according to claim 1, characterized in that: The surface of the fixing ring (11) is provided with a second mounting groove (14), and a second sealing ring (15) is provided in the second mounting groove (14). The second sealing ring (15) is in contact with the inner wall of the shaft seal cover (9).

5. A shaft seal circulating cooling device according to claim 1, characterized in that: It also includes a motor (2) installed on the side of the pump body (1), the output shaft of the motor (2) is fixedly mounted with a transmission rod, the transmission rod passes through the shaft seal cover (8), shaft seal cover (9), fixing ring (11) and front sealing ring (16) and extends into the interior of the pump body (1), and an impeller (17) is fixedly mounted on the transmission rod.

6. A shaft seal circulating cooling device according to claim 5, characterized in that: A front sealing ring (16) is fixedly installed on the impeller (17), and one end of the front sealing ring (16) is in contact with the side of the fixed ring (11).

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