CN204126906U - Drive clutch self-priming apparatus - Google Patents

Abstract

The utility model provides a novel drive clutch self-priming device, which is mainly used for the lifting and lifting working conditions of the medium liquid. Its technical feature is that a double-shaft motor is used, and there is a shaft at the front and rear ends of the motor. The front shaft is connected to the centrifugal pump, and the rear shaft is connected to the vacuum device through a clutch. The suction valve is connected with the clutch separation pipeline, the clutch separation pipeline is connected with the clutch separation device, and the clutch separation device is connected with the clutch. Its advantages are that the self-priming device and the centrifugal pump are driven by an electric motor or diesel engine, without the need for an electrical control system, the overall structure is simpler and more compact, the cost is lower, the performance is stable, and the failure rate is low. Vacuum pumping device can adopt various forms such as diaphragm vacuum pumping device, gas ring vacuum pump, Roots pump, etc., suitable for different working conditions such as large flow, toxic and harmful.

Description

Drive clutch self-priming device

technical field

The utility model relates to a new driving clutch self-priming device, in particular to a self-priming device which drives a centrifugal pump and a vacuum device at the same time by a motor, and can automatically complete medium lifting without an electric control system, mainly for medium liquid It is used in lifting and lifting conditions.

Background technique

With the continuous improvement of self-priming pump technology, its safety and stability are getting higher and higher, and the application range of self-priming pumps in lifting working conditions under medium liquid is becoming wider and wider. The original ordinary self-priming pumps are due to: 1. The self-priming height is low (1-4 meters); 2. The self-priming time is long (5 minutes or even longer); 3. The reliability of self-priming is not strong, and it often sucks No medium; 4. In order to realize the self-priming function, backflow is required, so that the pump efficiency is low; 5. It is not suitable for outdoors in winter in the north; 6. The internal return hole is often blocked, and problems such as frequent failures and frequent maintenance are gradually withdrawn from the self-priming pump market. . There are also new self-priming pumps (self-priming devices and electronic control systems in addition to centrifugal pumps) on the market: 1. There are many preparations and complex structures. 2. The electrical components are easily damaged, causing the pump to not self-prime normally. 3. The cost is high, 4. There are many problems such as that it cannot be used without a power supply. Compared with these self-priming pumps, "one machine with two belt self-priming pumps" patent number: ZL 201420082035.X and "a new type of chemical self-priming pump" patent number: ZL 201420082037.9 overcomes the shortcomings of the above-mentioned self-priming pumps, and has: 1. Compared with the new self-priming pump, the self-priming device and the centrifugal pump are driven by a motor or diesel engine, without the need for an electrical control system, the overall structure is simpler and more compact, the cost is lower, the performance is stable, and the failure rate is low; 2. The self-priming time is short , strong capacity, the maximum self-priming height can reach 7 meters; 3. There is no medium in the self-priming pump casing and pipeline, good antifreeze performance, suitable for use in northern winter, etc., but there are still: 1. The overall length of the vacuum pumping device is relatively long Large, heavy, directly installed on the shaft of the motor or centrifugal pump, the standard centrifugal pump or motor has changed a lot, which is not conducive to the mass production of the pump and the after-sales maintenance of the motor; 2. It will affect the structure of the motor and the pump. It has a certain influence on the overall structure and shaft strength of the pump and motor; 3. Due to the different specifications of the motor shaft and the pump shaft of the centrifugal pump, the shaft diameter of the drive shaft varies greatly. The vacuum device or pulley is directly installed on the drive shaft. The shaft diameter must be Compatible with the shaft diameter of the pump or motor, which is not conducive to the standardized design and production of vacuum pumping devices; 4. Some users do not approve of the transmission mode of belt transmission.

Contents of the invention

The purpose of this utility model is to provide a new type of reliable driving clutch self-priming device for the deficiencies in the above-mentioned technologies. The self-priming device and centrifugal pump are driven by an electric motor or diesel engine, without the need for an electrical control system, the overall structure is simpler and more compact, the cost is lower, the performance is stable, and the failure rate is low.

The purpose of this utility model is achieved in that it comprises four parts: centrifugal pump, biaxial motor, vacuum device and clutch. It is characterized in that a double-shaft motor is used, and there is a shaft at the front and rear ends of the motor. The front shaft is connected to the centrifugal pump, and the rear shaft is connected to the vacuum device through a clutch. The outlet of the centrifugal pump is provided with an outlet connecting pipe fitting, which is self-priming The valve is connected with the clutch separation pipeline, the clutch separation pipeline is connected with the clutch separation device, and the clutch separation device is connected with the clutch.

When working, the double-axis motor is started, the clutch is closed, the centrifugal pump and the vacuum device run at the same time driven by the front and rear shafts of the motor, at this time, the centrifugal pump is filled with gas, the centrifugal pump is idling, and the vacuum device pumps the gas in the centrifugal pump and the suction line to the centrifugal pump. Pump priming. When the gas in the pump is evacuated and the medium reaches the outlet connecting pipe, the lower buoyancy assembly of the outlet self-priming valve floats up and closes due to the buoyancy of the medium to prevent the medium from being sucked into the vacuum device. In order to prevent the lower buoy assembly from being closed in time, the medium Enter the vacuum device and discharge to the work site to cause pollution, and the upper buoy assembly is added to the lower buoy assembly for secondary leakage prevention. While the self-priming valve at the outlet is closed, the outlet medium of the centrifugal pump enters the clutch release device from the clutch release line, drives the inner pull rod of the clutch release device to pull the clutch fork to disengage the clutch, the vacuum pump stops vacuuming, and the centrifugal pump starts to operate normally . In order to ensure that the medium is completely emptied after the centrifugal pump is stopped, the suction pipeline or the centrifugal pump is equipped with an inlet valve and a liquid discharge pipeline. The medium flows back from the discharge line to the suction line, the recovery line or directly to the outside, ensuring that the medium in the centrifugal pump is completely emptied. In order to further improve the degree of automation of the device and try to avoid accidents caused by operators operating in flammable and explosive places, an outlet valve and an outlet valve diaphragm are installed at the pump outlet to separate sub-pumps. After the pump is in operation, the outlet pressure of the pump pushes the diaphragm of the outlet valve to separate the sub-pump, and the pull lever overcomes the force of the spring to open the outlet valve, realizing the automatic opening and closing of the outlet valve. According to specific working conditions, the vacuuming device can adopt various forms such as diaphragm vacuuming device, gas ring vacuum pump, Roots pump, etc.

The beneficial effects of the utility model: 1. The main pump adopts a centrifugal pump. Compared with other pumps, the centrifugal pump has the advantages of simple structure, no pulsation in infusion, simple flow adjustment, and wide working range. It is the first choice for all pump types; 2. The motor adopts Two-axis motor, one shaft is connected to the clutch at the rear of the motor, and the vacuum device is driven to vacuum, the structure is compact, the clutch length is short, and the force is better compared with the entire fan installed at the rear of the motor; 3. The clutch diaphragm separates the master cylinder The hydraulic pipeline is connected with the clutch diaphragm separation sub-pump, and the clutch diaphragm separation sub-pump pulls the pull rod to disengage the clutch, avoiding the problem that the clutch diaphragm separation master cylinder directly pulls the pull rod, and the pull rod is too long and the strength is not good, which is more convenient and reliable; 4 1. Self-priming, no need to manually fill the pump, and the start-up time is short; 5. The electrical control part is cancelled, and the control components are simpler and more reliable; 6. When the vacuum device is running, the centrifugal pump is idle and does not work. After the centrifugal pump is in operation, the vacuum device and The motor is disengaged, and no longer consumes the electric energy of the motor. Two devices share one motor, which does not need to increase the power of the motor, but also saves a motor; 7. The vacuum device can use a diaphragm vacuum device, an air ring vacuum pump, Various forms such as pumps, suitable for different working conditions such as large flow, toxic and harmful. 8. The vacuum device is driven by the rear shaft of the motor. The shaft diameter does not interfere with the size of other parts. The rear shaft of all specifications of the motor is the same size. The centrifugal pump does not need to be modified. It is a standard pump type, which is convenient for the centrifugal pump and vacuuming Standardized design and production of the device; 9. The outlet valve is controlled by hydraulic pressure, which can be opened and closed automatically, which reduces the labor intensity of the operator and has higher safety.

Description of drawings:

Figure 1 is a structural schematic diagram of the utility model diaphragm-driven clutch self-priming device

Figure 2 is a structural schematic diagram of the utility model gas ring vacuum pump driving clutch self-priming device

Fig. 3 is a schematic diagram of the structure of the Roots pump driven clutch self-priming device of the present invention

Figure 4 is a structural schematic diagram of the self-priming valve at the outlet of the utility model with the upper and lower buoys

Figure 5 is a structural schematic diagram of the self-priming valve at the outlet of the single lower buoy of the utility model

Fig. 6 is a schematic diagram of the structure of the drainage pipeline of the utility model connected to the recovery pipeline or directly discharged to the outside world

Figure 7 is a structural schematic diagram of the utility model outlet valve as a manual valve

Fig. 8 is a schematic diagram of the structure of the intake valve of the utility model provided on the suction pipeline

Fig. 9 is a schematic diagram of the drive structure of the utility model using a coupling + clutch between the motor and the vacuum device.

Detailed ways:

The concrete implementation of the present invention will be further described below in conjunction with accompanying drawing:

It can be seen from accompanying drawing 1 that the self-priming device adopts a double-shaft motor. There is a shaft at the front and rear ends of the motor. Vacuum pumping device 12, gas ring vacuum pump 13 and Roots pump 14 including various vacuum equipment. There are two ways of driving between the motor shaft and the vacuum device: the clutch is directly mounted on the motor shaft to drive the vacuum device or the motor is connected to the clutch through a coupling to drive the vacuum device.

The inlet of the centrifugal pump 10 is connected to the suction pipeline 1, the outlet is provided with an outlet connecting pipe fitting 4, and the top of the outlet connecting pipe fitting 4 is connected to the outlet valve 5, and the outlet valve 5 has two types of hydraulic transmission type outlet valve and manual control type outlet valve 19, among which the hydraulic transmission type The outlet valve includes an outlet valve 5 and an outlet valve diaphragm separation sub-pump 8 . The outlet valve 5 is connected to the outlet valve diaphragm separation sub-pump 8 and the outlet connecting pipe fitting 4 in sequence.

The side of the outlet connecting pipe fitting 4 is connected with the outlet valve diaphragm separation sub-pump 8 and also connected with the clutch separation pipeline 6 and the outlet self-priming valve 9 . Wherein the outlet self-priming valve 9 has two structural forms: one is composed of an upper buoy assembly 17 and a lower buoy assembly 18, and the other is a single lower buoy assembly 18 structure. The 9 outlets of the outlet self-priming valve are connected with the vacuuming device.

A clutch separation device is provided between the clutch separation pipeline 6 and the clutch 13, and the clutch separation device includes a clutch diaphragm separation master cylinder 7, a clutch diaphragm separation sub-pump 12, a hydraulic pipeline and a lever. Wherein the clutch separation line 6 is connected with the clutch diaphragm separation master cylinder 7, the clutch diaphragm separation master cylinder 7 is connected with the clutch diaphragm separation sub-pump 12 through the hydraulic pipeline, and the clutch diaphragm separation sub-pump 12 controls the opening of the clutch by pulling the clutch 13 fork through the lever and closed.

The clutch diaphragm separation master cylinder 7, the outlet valve diaphragm separation sub-pump 8 and the clutch diaphragm separation sub-pump 12 are diaphragm-type or piston-type hydraulic components driven by hydraulic pressure.

The intake valve 3 is set on the suction line 1 or the centrifugal pump, and the liquid discharge port of the centrifugal pump is provided with a liquid discharge line, and the liquid discharge line has three connection methods: the discharge port of the centrifugal pump to the suction line 1, and the liquid discharge port of the centrifugal pump to the recovery line or directly to the outside world.

As can be seen from Fig. 2 and Fig. 3, the present invention can not only adopt the structure of the diaphragm-type driven clutch self-priming device, but also can adopt the structure of the gas-ring vacuum pump-type driven clutch self-priming device and the structure of the Roots pump-type driven clutch self-priming device. It can be seen from Figure 4 and Figure 5 that the outlet adopts a self-priming valve structure with an upper and lower buoy outlet or a single lower buoy outlet self-priming valve structure. It can be seen from Fig. 6 that the drainage pipeline is connected to the recovery pipeline or directly discharged to the outside structure. It can be seen from Fig. 7 that the outlet valve of the present invention is a schematic structural diagram of a manual valve. It can be seen from Fig. 8 that the air inlet valve of the present invention is arranged on the suction pipeline.

Claims (10)

1. A driving clutch self-priming device comprising four parts of a centrifugal pump, a biaxial motor, a vacuum device and a clutch. It is characterized in that there is a shaft at the front and rear ends of the motor, the front shaft is connected to the centrifugal pump, the rear shaft is connected to the clutch, and the motor It is connected with the vacuum device through a clutch, and the outlet of the centrifugal pump is provided with an outlet connecting pipe fitting, which is connected with the outlet self-priming valve and the clutch separation pipeline, which is connected with the clutch separation device, and the clutch separation device is connected with the clutch. 2. The drive clutch self-priming device according to claim 1, characterized in that the clutch separation device comprises a clutch diaphragm separation master cylinder, a clutch diaphragm separation sub-cylinder, a hydraulic pipeline and a lever. 3. The clutch driven self-priming device according to claim 1, characterized in that the outlet valve has two forms of hydraulic transmission type and manual type, wherein the hydraulic transmission type valve includes an outlet valve and an outlet valve diaphragm separation sub-pump. 4. The drive clutch self-priming device according to claim 1, characterized in that the intake valve is installed on the centrifugal pump or the suction pipeline. 5. The clutch-driven self-priming device according to claim 1, characterized in that the discharge port of the centrifugal pump is connected with the suction pipeline, the recovery pipeline or the external atmosphere through the discharge pipeline. 6. The driving clutch self-priming device according to claim 1, characterized in that the outlet self-priming valve has two structures: upper buoy assembly plus lower buoy assembly or single buoy assembly. 7. The driving clutch self-priming device according to claim 1, characterized in that the vacuuming device is any vacuuming device including a diaphragm type vacuuming device, a gas ring vacuum pump and a Roots pump. 8. The clutch driven self-priming device according to claim 1, characterized in that the driving equipment of the self-priming device is a double-shaft motor or a double-shaft diesel engine. 9. The driving clutch self-priming device according to claim 1, characterized in that the clutch diaphragm separation master cylinder, the outlet valve diaphragm separation sub-pump and the clutch diaphragm separation sub-pump are hydraulically driven diaphragm type or piston hydraulic components. 10. The clutch-driven self-priming device according to claim 1, characterized in that the drive mode between the motor shaft and the vacuum device includes: the clutch is directly mounted on the motor shaft to drive the vacuum device or the motor is connected to the clutch through a coupling to drive Two ways of evacuating the device.