Improved container type mechanical seal water pump
By optimizing the pump structure through a cartridge mechanical seal assembly, a two-way load-bearing bearing structure, venting and oil draining design, flexible connection, and variable frequency speed control motor, the problems of poor sealing performance, insufficient bearing load, poor venting, and high vibration and noise of traditional water pumps have been solved, achieving water pump effects of high efficiency sealing, stable operation, and long service life.
Patent Information
- Application Number
- CN202520400853.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Traditional water pumps suffer from problems such as poor sealing performance, bearing assemblies being unable to withstand radial and axial forces simultaneously, poor venting leading to cavitation, inability to clean debris during oil draining, and excessively rigid coupling connections causing vibration and noise, which affect the stability and service life of the equipment.
By employing technologies such as cartridge-type mechanical seal assembly, two-way load-bearing bearing structure, venting and oil draining design, flexible connection and adjustable suspension bracket, and variable frequency speed control motor, the water pump structure is optimized to improve sealing performance, load-bearing capacity and operational stability.
It effectively prevents media leakage, improves load-bearing capacity, avoids cavitation, reduces vibration and noise, enhances equipment stability and energy utilization efficiency, and extends service life.
Smart Images
Figure CN223662102U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water pump technical field especially relates to an improved set type mechanical seal water pump. BACKGROUND
[0002] In industrial production and daily life, water pump as the key equipment of conveying liquid, application is extremely wide. Traditional water pump has many deficiencies in structure design and performance, influences its use effect and service life. In the sealing aspect, the traditional sealing mode sealing performance is not good, prone to leakage problem, not only causes medium waste, still causes pollution to the working environment, even influences the normal operation of equipment;In bearing assembly aspect, single type bearing is difficult to satisfy the demand of water pump in the running process to bear radial force and axial force simultaneously, influences the stability and service life of pump shaft, increases the equipment maintenance and replacement cost;In addition, the traditional water pump also has defects in exhaust and oil discharge, and the exhaust is not smooth, which will cause the cavitation phenomenon in the pump body, and seriously affect the performance and service life of the water pump;And the metal debris cannot be effectively cleaned when discharging oil, which will make the debris circulate in the pump body and aggravate the wear of parts;At the same time, when the traditional water pump is connected with the motor, the rigidity of the shaft coupling is too strong, the vibration and noise are large during operation, and the adjustment precision of the suspension support structure is insufficient, which leads to the deviation of the coaxiality of the pump shaft and the motor shaft, and affects the stability of the equipment. Therefore, an improved set type mechanical seal water pump with optimized structure and improved performance is needed. SUMMARY
[0003] To solve the problems existing in the prior art, the utility model provides an improved set type mechanical seal water pump, which improves the sealing performance, bearing capacity and use stability through optimized structure design, and is suitable for various pumping liquid occasions.
[0004] To achieve the above purpose, the utility model provides an improved set type mechanical seal water pump, which comprises a base, a pump body, a pump shaft and a motor, the pump body is fixed on the base, and a impeller cavity is arranged in the pump body;A impeller is arranged in the impeller cavity, and a impeller bolt is arranged on the impeller;A front clamping plate and a front pump cover are arranged at the front end of the impeller, a rear clamping plate and a rear pump cover are arranged at the rear end of the impeller, and the impeller is installed at the front end of the pump shaft through the impeller bolt and is clamped and fixed by the front pump cover and the rear pump cover through the front clamping plate and the rear clamping plate respectively;A bearing assembly and a suspension are arranged on the pump shaft in cooperation, and a suspension bracket is installed at the lower end of the suspension and is fixed through the suspension bracket;A set type mechanical seal assembly is further arranged between the pump shaft and the rear pump cover.
[0005] When this invention is in operation, the motor is first turned on. The motor speed is adjusted according to actual needs. Power is transmitted to the pump coupling via the motor coupling and elastic pins, driving the pump shaft to rotate, which in turn drives the impeller to rotate within the impeller cavity. The impeller is fixed to the front end of the pump shaft by impeller bolts. The front and rear clamping plates are respectively held by the front and rear pump covers to ensure axial positioning of the impeller. During rotation, fluid is drawn into the impeller cavity of the pump body and flows under the action of the impeller. The bushing of the cartridge mechanical seal assembly is tightly fitted onto the pump shaft, the positioning pin accurately positions the sealing block, and multiple O-rings effectively prevent media leakage. The gland is secured by the fastening assembly. The pump body is sealed by pressing against the sealing seat to form a seal; the front and rear bearings form a bidirectional load-bearing structure to support the pump shaft, and the bearing nut on the rear bearing is used for pre-tightening adjustment. The front and rear bearing covers protect the bearings; the vent plug on the top of the pump body can be quickly opened through the cross groove at the outer end to release gas inside the pump body and avoid cavitation; the magnetic drain plug at the bottom of the pump body is located at the lowest point and can adsorb metal debris and discharge residual liquid; in addition, the suspension is fixed by the suspension bracket installed at the lower end, and the number of shims between the suspension bracket and the base can be adjusted to ensure the coaxiality of the pump shaft and the motor shaft, ultimately achieving low vibration and high efficiency operation of the water pump.
[0006] The beneficial effects of this utility model are as follows: By adopting a cartridge-type mechanical seal assembly, the sealing performance of the water pump is effectively improved, preventing media leakage and ensuring pumping efficiency; the bearing assembly adopts a combination structure of front and rear bearings, forming a bidirectional load-bearing structure, which improves the load-bearing capacity of the water pump and adapts to the needs of use under complex working conditions; an exhaust plug is set at the top of the pump body and an oil drain plug is set at the bottom, realizing efficient discharge of gas and rapid discharge of residual liquid in the pump body, avoiding cavitation, reducing wear of impurities on the water pump, and improving the reliability and service life of the water pump; in addition, the pump shaft and motor are connected by an elastic pin and a rubber buffer layer is provided, which effectively reduces vibration and noise during transmission; an adjustable number of shim sets are provided between the suspension bracket and the base, which facilitates the installation, debugging and leveling of the water pump and reduces the coaxiality error between the pump shaft and the motor shaft; in addition, the use of a variable frequency speed control motor allows the water pump to flexibly adjust the speed according to different working conditions, improving energy utilization efficiency.
[0007] As a further improvement of this utility model, in order to improve the sealing performance of the water pump, prevent media leakage, and ensure pumping efficiency, the cartridge mechanical seal assembly includes a bushing, a locating pin, and a sealing block. The bushing is tightly fitted onto the pump shaft, and the locating pin is located between and connected to the bushing and the sealing block for accurate positioning. Several O-rings are also provided between the bushing and the sealing block to prevent media leakage. A sealing seat and a pressure cap are provided on the outside of the sealing block, and a fastening assembly is provided on the pressure cap. The pressure cap is pressed against the sealing seat by the fastening assembly to form a seal.
[0008] As a further improvement of the utility model, in order to enhance the radial and axial load capacity of pump shaft, improve the stability and reliability of water pump operation, the bearing assembly includes front bearing and rear bearing, the front bearing and rear bearing are respectively matched with front bearing gland and rear bearing gland, the rear bearing is also matched with bearing nut, the bearing nut is used for pre-tightening adjustment, the front bearing is angular contact ball bearing, the rear bearing is cylindrical roller bearing, and the two form bidirectional load bearing structure.
[0009] As a further improvement of the utility model, in order to realize the rapid discharge of gas and residual liquid in the pump body, avoid the occurrence of cavitation and reduce the wear of water pump, prolong the service life of water pump, the top of the pump body is provided with an exhaust plug, the inner cavity of the exhaust plug is communicated with the impeller cavity, the outer end of the exhaust plug is provided with a cross groove, and the exhaust plug can be quickly opened and closed through the cross groove, the efficient discharge of gas in the pump body is realized, and the cavitation phenomenon is avoided, the bottom of the pump body is provided with a drain plug, and the drain plug is located at the lowest point of the bottom of the pump body, the drain plug is made of magnetic material, can adsorb metal scraps, and is used for the rapid discharge of residual liquid.
[0010] As a further improvement of the utility model, in order to effectively reduce vibration and noise, improve the stability and comfort of equipment operation, the pump shaft and motor are matched with pump shaft coupling and motor shaft coupling, the pump shaft coupling and motor shaft coupling are connected by elastic pin, and the surface of the elastic pin is further provided with a rubber buffer layer.
[0011] As a further improvement of the utility model, in order to facilitate the installation, debugging and horizontal calibration of water pump, reduce the coaxial error of pump shaft and motor shaft, the gasket group is arranged between the suspension bracket and the base, and the number of gaskets of the gasket group can be adjusted.
[0012] As a further improvement of the utility model, in order to make the water pump can be adjusted according to different working conditions Rotating speed, improve energy utilization efficiency, meet the diversified work demand, the motor adopts variable frequency speed regulation motor. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the drawings:
[0014] Fig. 1 It is the overall structure schematic view of the utility model.
[0015] Fig. 2 It is the left side view of the utility model.
[0016] Fig. 3 It is the structure schematic view of the assembly type mechanical seal assembly in the utility model.
[0017] Wherein, 1 base, 2 impeller bolt, 3 front pump cover, 4 impeller, 5 front clamp plate, 6 pump body, 7 rear clamp plate, 8 rear pump cover, 9 packing assembly, 901 shaft sleeve, 902 positioning pin, 903 O-ring, 904 sealing block, 905 sealing seat, 906 gland, 907 fastening assembly, 10 suspension, 11 front bearing gland, 12 front bearing, 13 pump shaft, 14 exhaust plug, 15 rear bearing, 16 bearing nut, 17 rear bearing gland, 18 pump coupling, 19 electric coupling, 20 motor, 21 suspension bracket, 22 oil drain plug, 23 gasket set. DETAILED DESCRIPTION
[0018] As Figs. 1-3An improved set type mechanical seal water pump is shown, which comprises a base 1, a pump body 6, a pump shaft 13 and a motor 20, the pump body 6 is fixed on the base 1, and an impeller cavity is arranged in the pump body 6; an impeller 4 is arranged in the impeller cavity, and an impeller bolt 2 is arranged on the impeller 4; a front clamping plate 5 and a front pump cover 3 are arranged at the front end of the impeller 4, and a rear clamping plate 7 and a rear pump cover 8 are arranged at the rear end of the impeller 4, the impeller 4 is installed at the front end of the pump shaft 13 through the impeller bolt 2 and is clamped and fixed by the front pump cover 3 and the rear pump cover 8 through the front clamping plate 5 and the rear clamping plate 7 respectively; a bearing assembly and a suspension 10 are arranged on the pump shaft 13 in cooperation, the lower end of the suspension 10 is provided with a suspension bracket 21 and is fixed through the suspension bracket 21; a set type mechanical seal assembly 9 is further arranged between the pump shaft 13 and the rear pump cover 8; the set type mechanical seal assembly 9 comprises a shaft sleeve 901, a positioning pin 902 and a sealing block 904; the shaft sleeve 901 is tightly sleeved on the pump shaft 13, the positioning pin 902 is arranged between and connected with the shaft sleeve 901 and the sealing block 904 for accurate positioning; an O-shaped sealing ring 903 is further arranged between the shaft sleeve 901 and the sealing block 904, a plurality of O-shaped sealing rings 903 are arranged for preventing medium leakage; a sealing seat 905 and a gland 906 are arranged on the outer side of the sealing block 904, and a fastening assembly 907 is arranged on the gland 906; the gland 906 is pressed tightly with the sealing seat 905 through the fastening assembly 907 to form a seal; the bearing assembly comprises a front bearing 12 and a rear bearing 15, and a front bearing gland 11 and a rear bearing gland 17 are respectively arranged on the front bearing 12 and the rear bearing 15 in cooperation; a bearing nut 16 is further arranged on the rear bearing 15 in cooperation, and the bearing nut 16 is used for pre-tightening adjustment; the front bearing 12 is an angular contact ball bearing, and the rear bearing 15 is a cylindrical roller bearing, and the two bearings form a bidirectional bearing structure; an exhaust plug 14 is arranged at the top of the pump body 6, and the inner cavity of the exhaust plug 14 is communicated with the impeller cavity; a cross groove is arranged at the outer end of the exhaust plug 14, and the cross groove can be used for quick opening and closing of the exhaust plug 14, so that the gas in the pump body 6 can be efficiently discharged, and the cavitation phenomenon is avoided; an oil drain plug 22 is arranged at the bottom of the pump body 6, and the oil drain plug 22 is located at the lowest point of the bottom of the pump body 6; the oil drain plug 22 is made of magnetic material and can adsorb metal scraps and is used for quick discharge of residual liquid; a pump shaft coupling 18 and a motor shaft coupling 19 are arranged between the pump shaft 13 and the motor 20 in cooperation, and the pump shaft coupling 18 and the motor shaft coupling 19 are connected by an elastic pin; a rubber buffer layer is further arranged on the surface of the elastic pin; a gasket set 23 is arranged between the suspension bracket 21 and the base 1, and the number of gaskets of the gasket set 23 can be adjusted; the motor 20 is a variable frequency motor.
[0019] The utility model discloses a pump, including pump body 6, pump shaft 13, front bearing 12, rear bearing 15, front clamping plate 5, rear clamping plate 7, impeller 4, motor 20, pump cover 3, rear pump cover 8, gasket set assembly 9, exhaust plug 14, bearing nut 16, bearing cover 11, bearing cover 17, suspension 10, suspension support 21, base 1, shaft sleeve 901, positioning pin 902, O type sealing ring 903, gland 906, fastening assembly 907, sealing seat 905, magnetic oil drain plug 22, motor shaft 21, the pump body 6 is provided with the pump shaft 13, and the pump shaft 13 is provided with front bearing 12 and rear bearing 15, and the front bearing 12 and rear bearing 15 are provided with front clamping plate 5 and rear clamping plate 7, and the front clamping plate 5 and rear clamping plate 7 are provided with impeller 4, and the impeller 4 is provided with pump cover 3 and rear pump cover 8, and the pump cover 3 and rear pump cover 8 are provided with gasket set assembly 9, and the gasket set assembly 9 is provided with exhaust plug 14, and the exhaust plug 14 is provided with bearing nut 16, and the bearing nut 16 is provided with bearing cover 11 and bearing cover 17, and the bearing cover 11 and bearing cover 17 are provided with suspension 10, and the suspension 10 is provided with suspension support 21, and the suspension support 21 is provided with base 1, and the base 1 is provided with shaft sleeve 901, positioning pin 902, O type sealing ring 903, gland 906, fastening assembly 907, sealing seat 905 and magnetic oil drain plug 22, and the base 1 is provided with motor shaft 21.
[0020] The above only is the preferred implementation of the utility model, the protection scope of the utility model is not only limited to the above-mentioned embodiment, and all technical schemes under the utility model's idea that belong to the utility model's protection scope are belong to the protection scope of the utility model. It should be noted that for the ordinary skilled in the art, under the premise of not departing from the principle of the utility model, a number of improvements and decorations, these improvements also should be considered as the protection scope of the utility model.
Claims
1. An improved canned seal water pump comprising a base (1), a pump body (6), a pump shaft (13) and a motor (20), characterized in that, The pump body (6) is fixed on the base (1), and a impeller cavity is arranged in the pump body (6); a impeller (4) is arranged in the impeller cavity, and a impeller bolt (2) is arranged on the impeller (4); a front clamping plate (5) and a front pump cover (3) are arranged at the front end of the impeller (4), and a rear clamping plate (7) and a rear pump cover (8) are arranged at the rear end of the impeller (4); the impeller (4) is installed at the front end of a pump shaft (13) through the impeller bolt (2) and is clamped and fixed by the front pump cover (3) and the rear pump cover (8) through the front clamping plate (5) and the rear clamping plate (7) respectively; a bearing assembly and a suspension (10) are arranged on the pump shaft (13) in cooperation, the lower end of the suspension (10) is provided with a suspension bracket (21) and is fixed through the suspension bracket (21); a canned mechanical seal assembly (9) is further arranged between the pump shaft (13) and the rear pump cover (8).
2. The improved canned motor water seal pump of claim 1 wherein: The canned mechanical seal assembly (9) comprises a shaft sleeve (901), a positioning pin (902) and a sealing block (904); the shaft sleeve (901) is tightly sleeved on the pump shaft (13), the positioning pin (902) is arranged between the shaft sleeve (901) and the sealing block (904) and is connected, and is used for accurate positioning; an O-shaped sealing ring (903) is further arranged between the shaft sleeve (901) and the sealing block (904), a plurality of O-shaped sealing rings (903) are arranged, and are used for preventing medium leakage; a sealing seat (905) and a gland (906) are arranged on the outer side of the sealing block (904), and the gland (906) is provided with a fastening assembly (907); the gland (906) is pressed tightly with the sealing seat (905) through the fastening assembly (907) to form a seal.
3. The improved canned water pump of claim 1 wherein: The bearing assembly comprises a front bearing (12) and a rear bearing (15), the front bearing (12) and the rear bearing (15) are respectively provided with a front bearing gland (11) and a rear bearing gland (17) in cooperation and are installed; a bearing nut (16) is further arranged on the rear bearing (15) in cooperation, and the bearing nut (16) is used for pre-tightening adjustment; the front bearing (12) is an angular contact ball bearing, and the rear bearing (15) is a cylindrical roller bearing, and the two are combined to form a bidirectional bearing structure.
4. The improved canned water pump of claim 1 wherein: A vent plug (14) is arranged at the top of the pump body (6), and the inner cavity of the vent plug (14) is communicated with the impeller cavity; a cross groove is arranged at the outer end of the vent plug (14), the vent plug (14) can be quickly opened and closed through the cross groove, the efficient discharge of gas in the pump body (6) is realized, and the cavitation phenomenon is avoided; an oil drain plug (22) is arranged at the bottom of the pump body (6), and the oil drain plug (22) is located at the lowest point of the bottom of the pump body (6); the oil drain plug (22) is made of magnetic material, can adsorb metal scraps, and is used for rapid discharge of residual liquid.
5. The improved canned water pump of claim 1 wherein: A pump shaft coupling (18) and a motor shaft coupling (19) are arranged between the pump shaft (13) and the motor (20) in cooperation, the pump shaft coupling (18) and the motor shaft coupling (19) are connected by an elastic pin, and a rubber buffer layer is further arranged on the surface of the elastic pin.
6. The improved canned water pump of claim 1 wherein: A gasket set (23) is arranged between the suspension bracket (21) and the base (1), and the number of gaskets of the gasket set (23) can be adjusted.
7. The improved canned water pump of claim 1 wherein: The motor (20) is a variable frequency speed regulating motor.