CN116586205A - A new type of horizontal screw centrifuge with feeding method - Google Patents

Abstract

The invention provides a horizontal screw centrifuge with a new feeding mode. It includes an organic base, which is connected to the shell by bolts. The base is equipped with a main motor. The main motor drives the drum to rotate and drives the differential housing to rotate. There is a screw pusher inside the drum, and the screw pusher is provided with The distributor, the screw pusher is provided with a feed pipe connected to the feed chamber, the base is provided with an acceleration motor, the acceleration motor drives the acceleration shaft, and at the same time drives the acceleration disk to rotate, and the acceleration disk is set near the baffle in the feed chamber , the acceleration disc is provided with an acceleration impeller, the base is provided with an auxiliary motor, the auxiliary motor is connected to the input shaft of the differential, and the output shaft of the differential is connected to the helical body. The invention drives the acceleration device through the acceleration motor to accelerate the rotation of the incoming materials in advance, accelerate the dispersion of the materials, reduce the circumferential lag of the material speed, improve the uneven distribution of the materials, improve the actual separation efficiency of the centrifuge, and improve the parameters of the centrifuge for materials. Adaptability to change.

Description

A Horizontal Screw Centrifuge with a New Feed Method

technical field

The invention relates to a feeding system for materials to be separated in a horizontal screw centrifuge, in particular to a horizontal screw centrifuge with a new feeding method.

Background technique

Horizontal screw centrifuge is a separation machine commonly used in modern industry, used to separate mixed phases, such as solid-liquid, liquid-solid, solid-liquid-liquid and liquid-liquid-solid separation , mainly used in dehydration, concentration, separation, clarification, purification and solid particle classification and other processes. Compared with other separation machinery, the centrifuge can not only obtain solid phase with low moisture content and high-purity liquid phase, but also save labor, reduce labor intensity, improve working conditions, and has continuous operation, automatic remote control, safe and reliable operation and small footprint.

At present, the horizontal screw centrifuge has been widely used, mainly in petroleum, chemical industry, food, medicine and other industries, especially in the petroleum industry, as an important part of the drilling fluid solid control system, the horizontal screw centrifuge is mainly composed of high Rotary drum with rotating speed, screw pusher with hollow rotating shaft and differential gear with the same direction of rotation as the rotating drum and a slightly lower rotating speed than the rotating drum. Its basic working principle is: two concentrically installed main bearings The rotating part on the top is a non-porous drum on the outside, and a pusher with helical blades on the inside. The motor drives the drum and the screw pusher to rotate in the same direction at a certain differential speed, and the drilling fluid passes through the feed port. The pipe is transported to the inside of the drum. Due to the action of centrifugal force, the heavier solid phase particles are thrown to the drum wall to deposit and form a sediment layer, and the lighter liquid phase forms an inner liquid ring. Under the action of the difference in speed, the solid particles The phase sediment is continuously pushed to the end of the cone section of the drum by the screw pusher, and discharged out of the machine through the slag discharge port, and the liquid phase overflows out of the machine through the overflow port at the large end. During the working process, the feed, liquid and solid discharge Continuously.

However, with the rapid development of drilling technology and new technology, and the successful development of various new solid control equipment in the solid control system, higher requirements are put forward for the working capacity and processing capacity of the centrifuge in the solid control system, but At present, due to the high viscosity of the drilling fluid to be treated, the fluidity of the drilling fluid in the centrifuge is poor, and there is a certain circumferential hysteresis in the speed of the drilling fluid transmitted to the drum. The more serious the hysteresis, the lower the efficiency of sedimentation and separation. Slow material diffusion, uneven material distribution and other problems. At the same time, due to the constant changes in the parameters of the drilling fluid during the drilling process, there is a high requirement for the adaptability of the centrifuge, but in fact, it is impossible for each centrifuge to meet the requirements of all working conditions. There will be certain defects in the treatment of mud, so some problems will appear in the actual work, such as small processing capacity, large vibration, high noise, and inconspicuous separation effect and so on. The problems of unloading clogging, small processing capacity, and large vibration during the on-site use of the centrifuge limit the application and development of the centrifuge.

Therefore, in order to meet the requirements of field application, a new feeding method is provided to solve the above problems.

Contents of the invention

In order to solve the above-mentioned problems, the present invention provides a horizontal screw centrifuge with a new feeding method, which can conduct flow diversion and diffusion acceleration for the feed, improve the separation efficiency of the centrifuge, and improve the adaptability of the centrifuge to the changing parameters of the material. sex. A horizontal screw centrifuge with a new feeding method is characterized in that it includes an organic base. The machine base is connected by rotation, there is a screw pusher inside the drum, overflow holes are arranged equidistantly around the side of the drum with a larger diameter, and discharge holes are arranged equidistantly around the side of the drum with a smaller diameter, The screw pusher is provided with a feed chamber, and the screw pusher is equidistantly arranged with a feeder connected with the feed chamber, and the screw pusher is rotated with a feed pipe connected with the feed chamber. An acceleration disc is arranged close to the baffle, and the acceleration disc is welded with an acceleration impeller at a circumferential equidistant distance. An auxiliary motor is installed on the upper left part of the base. There is an acceleration motor on the left lower part of the frame, and the output shaft of the acceleration motor is fixedly connected with the acceleration driving pulley. The acceleration driving wheel is connected with the acceleration driven wheel through the V-belt. The shaft end is connected with the acceleration disc.

In a preferred embodiment of the present invention, the base is provided with a main motor, an auxiliary motor, and an acceleration motor. The main motor drives the drum and simultaneously drives the differential housing to rotate. The auxiliary motor is connected to the input shaft of the differential, and the acceleration motor Drive the accelerator to rotate.

In a preferred embodiment of the present invention, the acceleration motor is a reduction motor, the output shaft is fixedly connected to the acceleration driving pulley, and is connected to the acceleration driven pulley through a V-belt.

In a preferred embodiment of the present invention, the acceleration driven pulley is fixed on the acceleration shaft through a key, and the acceleration shaft is driven to rotate by an acceleration motor.

In a preferred embodiment of the present invention, the acceleration shaft is a straight shaft, and the acceleration shaft passes through the cavity of the differential gear and the screw pusher, and the partition and the baffle plate in the cavity of the screw pusher play a role in fixing the acceleration shaft. The right shaft end of the acceleration shaft is welded with an acceleration disk.

In a preferred embodiment of the present invention, the acceleration disk is cylindrical and is arranged near the baffle in the feed chamber. The diameter of the acceleration disk is equal to the inner diameter of the feed chamber and the length is the same as the baffle to prevent materials from entering the centrifuge. part.

In a preferred embodiment of the present invention, the feed chamber is set in the cavity of the screw propeller and is in the shape of a cylinder. The material enters the cylindrical feed chamber through the feed pipe and is stirred by the accelerating impeller, and passes through the material distribution port. Diffusion into the drum.

In a preferred embodiment of the present invention, the acceleration blades are cylindrical blades, which have better radial acceleration effect on materials and less turbulence intensity. The acceleration impeller is welded on the acceleration disk and driven by an acceleration motor to improve the centrifuge's impact on materials. Adaptability to parameter changes, the diameter of the outlet of the accelerating impeller is as large as the inner diameter of the feeding chamber, which increases the area of the diffused material, and the diameter of the inlet of the accelerating impeller is 20-30mm larger than that of the feeding pipe, reducing the erosion of the material on the accelerating impeller.

In a preferred embodiment of the present invention, the distributor is in the shape of a strip, so as to avoid large disturbances to the accelerated fluid.

In a preferred embodiment of the present invention, the material passed into the feed pipe is drilling fluid.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, an accelerating impeller is provided in the feeding chamber of the horizontal screw centrifuge, and when the material enters the feeding chamber through the feeding pipe, the material is diverted and diffused to accelerate, and with the drive of the accelerating motor, the accelerating blades have an impact on the material. Agitate, spread the material evenly and quickly and increase the speed of the material, accelerate the rapid diffusion of the material, reduce the tangential speed difference between the material and the drum when it reaches the drum, so that it can quickly reach the speed of the drum, and accelerate the material Change from axial high-speed movement to radial high-speed movement, rapid settlement, avoid feed blockage, reduce turbulent flow generated by feed, and accelerate impeller circumferentially symmetrical arrangement, which is beneficial to improve the uneven distribution of materials when they enter the drum through the distributor The problem of uniformity can be reduced, the vibration problem of the centrifuge can be reduced, and the actual separation efficiency of the centrifuge can be improved.

In the present invention, an acceleration motor is arranged on the base of the horizontal spiral centrifuge, and the acceleration motor drives the acceleration driving pulley to rotate, and the acceleration driving pulley drives the acceleration driven pulley to rotate through the V-belt connection, and the acceleration driven pulley is fixedly connected. On the acceleration shaft, the acceleration motor drives the acceleration shaft to rotate, and the acceleration shaft rotates through the rotation of the acceleration disc. The acceleration disc is welded with an acceleration impeller, and the acceleration impeller can indirectly adjust the speed through the acceleration motor. For horizontal screw centrifuges in different working conditions In this case, the speed of the accelerating impeller can be adjusted by adjusting the accelerating motor, the speed difference between the accelerating impeller and the drum can be improved, the adaptability of the centrifuge to different working conditions can be increased, and the adaptability of the centrifuge to changing parameters of materials can be improved.

Description of drawings

The accompanying drawings, which constitute a part of the invention, are included to provide a further understanding of the invention.

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a partially enlarged view of A in Fig. 1 of the present invention.

Fig. 3 is a side view of the acceleration device of the present invention.

Fig. 4 is a schematic diagram of connection between the acceleration device and the acceleration motor of the present invention.

Fig. 5 is a partial structural schematic diagram of the cooperation between the acceleration shaft and the bearing of the present invention.

The marks of each part in the accompanying drawings are as follows: 1. Main motor, 2. Machine base, 3. Shell, 4. Drum, 5. Screw pusher, 6. Differential device, 7. Auxiliary motor, 8. Acceleration drive Pulley, 9, acceleration motor, 10, acceleration driven pulley, 11, acceleration shaft, 12, feed chamber, 1201, acceleration impeller, 1202, acceleration disk, 13, feed pipe, 14, material distributor, 15, Baffle plate, 16, V belt.

Detailed ways

In the following, the present invention will be described in detail with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some examples of the present invention, not all examples. In the description of the present invention, it should be noted that for orientation words, such as "left", "right", "upper left", "lower left", "inner", "outer", "length", "long", "Short" and other indication orientations and positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of description, not for the purpose of indicating or implying that the device or element must have a specific orientation or be constructed in a specific orientation. and operation, should not be construed as limiting the specific protection scope of the present invention.

A horizontal screw centrifuge with a new feeding method, as shown in Figure 1-Figure 5, includes an organic base 2, the top of the base 2 is connected with a shell 3 by bolts, and the right part of the base 2 has a main motor installed by bolts 1. The main motor 1 is a deceleration motor. The output shaft of the main motor 1 is fixedly connected to the pulley of the main motor, which is connected to the pulley of the drum through a belt transmission. The main motor 1 drives the drum 4 to rotate through the belt transmission. The drum 4 and the differential 6 shells are connected, the main motor 1 drives the rotation of the drum 4 and also drives the rotation of the differential 6 shell, the upper left part of the machine base 2 has an auxiliary motor 7 installed by bolts, the auxiliary motor 7 is a geared motor, and the auxiliary motor 7 The output shaft is fixedly connected with an auxiliary motor pulley, the auxiliary motor 7 is connected with the input shaft of the differential 6 through a belt, the auxiliary motor 7 drives the differential 6 to work through a transmission, and the output shaft of the differential 6 is connected with the screw pusher 5, The differential gear 6 works to generate a constant differential rotational speed between the screw pusher 5 and the rotating drum 4. An acceleration motor 9 is mounted on the left lower part of the machine base 2 through bolts, and the output shaft of the acceleration motor 9 is fixedly connected with an acceleration driving pulley 10. , the acceleration driving pulley 10 is connected with the acceleration driven pulley 8 through the V-belt 16, the acceleration driven pulley 8 is installed on the left shaft end of the acceleration shaft 11 through a key, the acceleration motor 9 drives the acceleration shaft 11 to rotate through the belt transmission, and the acceleration shaft 11 passes through the inner cavity of the differential 6 and the screw pusher 5, the acceleration shaft 11 passes through the baffle plate 15 and is welded with an acceleration disc 1202, and the partition plate and the baffle plate 15 in the screw pusher 5 play the role of fixing the acceleration shaft 11 , the acceleration disk 1202 is arranged in the feeding chamber 12 close to the baffle plate 15, the acceleration impeller 1201 is welded on the acceleration disk 1202, the feeding chamber 12 is arranged in the screw pusher 5, and the outer side of the screw pusher 5 is covered with a drum 4. The rotating drum 4 is connected with the machine base 2 and the shell 3. The side of the drum 4 with a smaller diameter is provided with outlets equidistant in the circumferential direction, and the side of the drum 4 with a larger diameter is provided with overflow holes equidistant in the circumferential direction. , the screw pusher 5 is circumferentially equidistantly provided with a distributor 14 communicated with the feed chamber 12, the screw pusher 5 is rotated and provided with a feed pipe 13 communicated with the feed chamber 12, and the rotating drum 4 rotates to make the material produce Centrifugal force, due to the difference in specific gravity, the solid will first contact with the drum 4 and deposit on the inner wall of the drum to form a sediment layer, and the liquid phase will form an inner liquid ring, and then the screw pusher 5 will move the solid to the right and pass through the discharge hole The liquid is discharged out of the machine, and the liquid flows out of the machine through the overflow hole.

Further, the acceleration disc 1202 is cylindrical and is arranged at the feed chamber 12 close to the baffle 14. The diameter of the acceleration disc 1202 is the same as the inner diameter of the feed chamber 12, and the length of the acceleration disc 1202 is the same as that of the baffle 14 to ensure that the material is accelerated. The flow between the disk 1202 and the feed chamber, the acceleration impeller 1201 is a cylindrical blade to ensure that the material has a good radial rapidity and a small turbulence intensity, the acceleration impeller 1201 is welded on the acceleration disk 1202, the outlet diameter of the acceleration impeller 1201 is the same The inner diameter of the chamber 12 is the same, increasing the material diffusion area, and the inlet diameter of the accelerating impeller 1201 is 20-30mm larger than the diameter of the feeding pipe 13, so as to reduce the erosion effect of the material on the accelerating impeller 1201, and at least 6-8 accelerating impellers 1202 can be installed to ensure Good acceleration effect, the specific amount is determined by the type of mixture, the length of the accelerating impeller 1201 is slightly shorter than the feeding chamber 12, to ensure that the material has enough space to accelerate in the feeding chamber, and the accelerated material is transformed from high-speed axial movement For radial movement, the accelerating impeller 1201 is longer than the distributor 14, so that the material reaches the drum more evenly. The distributor 14 is set in a long strip shape, generally 4 to 6, to avoid disturbance. The accelerating impeller 1201 is in the feed chamber 12 The material is diverted and diffused to accelerate, and the material is discharged from the distributor 14 to the drum 4 relatively uniformly after pre-acceleration.

Further, the acceleration motor 9 is a reduction motor, the output shaft of the acceleration motor 9 is fixedly connected with the acceleration driving pulley 10, the acceleration driving pulley 10 is connected to the acceleration driven pulley 8 through the V-belt 16, and the acceleration driven pulley 8 passes through The key is installed on the acceleration shaft 11, and the acceleration shaft 11 is set to a straight axis cylindrical shape, and the acceleration shaft 11 passes through the cavity of the differential 6 and the screw pusher 5, and the partition plate and the baffle plate 15 in the screw pusher 5 play a role. The role of the fixed acceleration shaft 11, the right shaft end of the acceleration shaft 11 is welded with an acceleration disc 1202, and the acceleration disc 1202 is welded with an acceleration impeller 1201, which is driven by the acceleration motor 9 to stir the material and spread the material evenly and quickly And increase the speed of the material, independently control the acceleration impeller 1201 by adjusting the acceleration motor 9, improve the speed difference between the acceleration impeller and the drum, increase the adaptability of the centrifuge to different working conditions, and improve the adaptability of the centrifuge to the changing parameters of the material sex.

Further, the feed pipe 13 of the horizontal screw centrifuge that accelerates material diffusion passes through the partition and extends into the feed chamber 12, so the partition plays the role of fixing the feed pipe, and the main motor 1 drives the drum 4. While rotating along the high-speed axial direction, it drives the rotation of the housing of the differential 6. The auxiliary motor 7 drives the differential 6 through the transmission device. The output shaft of the differential 6 outputs torque to the screw pusher 5 at a certain differential speed, so that There is a certain speed difference between the screw pusher 5 and the rotating drum 4. The acceleration motor 9 drives the acceleration shaft 11 to rotate through the belt transmission. The acceleration shaft 11 drives the rotation of the acceleration disc 1202 and the acceleration impeller 1201 at the same time, and the acceleration impeller is independently regulated by the acceleration motor 9. 1201 rotates, the material is transported from the feed port to the inside of the feed chamber 12 through the feed pipe 13, the acceleration impeller 1201 is driven by the acceleration motor 9, and the material is stirred in the feed chamber 12, and the material is evenly and quickly diffused and the material is increased. After the material rotates and accelerates for a certain period of time, the material changes from high-speed axial motion to radial motion. When the speed of the impeller 1201 is accelerated to synchronize with the speed of the drum 4, the material is discharged through the distributor 14 and divided into several strands. The liquid flow is quickly and evenly distributed to the separation area of the drum 4. Due to the centrifugal force, the heavier solid phase particles are thrown to the inner wall of the drum 4 to deposit and form a sediment layer, and the lighter liquid phase forms an inner liquid ring. Under the action of the speed difference, the solid phase sediment is continuously pushed by the screw propeller 5 to the end of the cone section of the drum 4, and discharged out of the machine through the slag discharge port, and the liquid phase overflows out of the machine through the overflow port at the large end.

The above-mentioned examples are illustrative and not restrictive of the present invention. The structures or equivalent structures made by those skilled in the art without departing from the description of the present invention and the contents of the accompanying drawings are all included in the scope of patent protection of the present invention. .

Claims (10)

1. A horizontal screw centrifuge with a new feeding method is characterized in that it includes an organic base (2), the top of the base (2) is connected to the shell (3) by bolts, and the right part of the base (2) is provided with a useful The main motor (1) drives the drum (4) to rotate, the drum (4) is respectively connected to the shell (3) and the base (2) in rotation, and there is a screw pusher (5) inside the drum (4), The side of the drum (4) with a larger diameter is equidistantly provided with overflow holes in the circumferential direction, and the side of the drum (4) with a smaller diameter is provided with discharge holes equidistantly in the circumferential direction, and the screw pusher (5) is provided with There is a feed chamber (12), and the screw pusher (5) is circumferentially provided with a distributor (14) communicated with the feed chamber (12), and the screw pusher (5) is rotatably provided with a (12) Connected feeding pipe (13), in the feeding chamber (12) is provided with an accelerating disc (1202) near the baffle plate (15), and the accelerating disc (1202) is welded with accelerating impellers (1201) at a circumferential equidistant distance , the upper left part of the base (2) is provided with an auxiliary motor (7), the output shaft of the auxiliary motor (7) is connected with the input shaft of the differential (6), and the output shaft of the differential (6) is connected with the screw pusher (5) connection, the bottom left part of the support (2) is provided with an acceleration motor (9), and the output shaft of the acceleration motor (9) is fixedly connected with an acceleration drive pulley (10), and the acceleration drive pulley (10) is connected to the acceleration drive through a V-belt (16) The driven pulley (8) is connected, the accelerated driven pulley (8) is installed on the accelerating shaft (11), the accelerating motor (9) is connected to the accelerating shaft (11) through a belt transmission, and the right shaft end of the accelerating shaft (11) Connect the accelerator disk (1202). 2. the horizontal screw centrifuge of novel feed mode according to claim 1 is characterized in that, described support (2) is provided with main motor (1), auxiliary motor (7), speed-up motor ( 9). 3. The horizontal screw centrifuge of novel feeding method according to claim 1, is characterized in that, described acceleration motor (9) is a reduction motor, and the output shaft is fixedly connected to accelerate the drive pulley (10), through V Belt (16) connects to accelerate driven pulley (8). 4. The horizontal screw centrifuge of the new feeding method according to claim 1, characterized in that, the described acceleration driven pulley (8) is fixedly connected to the acceleration shaft (11) by a key, and the acceleration motor (9) Drive the acceleration shaft (11) to rotate. 5. The horizontal screw centrifuge of novel feeding method according to claim 1, is characterized in that, described acceleration shaft (11) is a straight shaft, and acceleration shaft (11) passes through differential (6), The cavity of the screw pusher (5), the partition plate and the baffle plate (15) in the cavity of the screw pusher (5) play the role of fixing the acceleration shaft (11), and the right shaft end of the acceleration shaft (11) is welded with an acceleration disk (1201). 6. The horizontal screw centrifuge with new feeding method according to claim 1, characterized in that, the described accelerating disc (1201) is cylindrical, and is arranged in the feeding chamber (12) close to the baffle (15) At the position, the diameter of the acceleration disc (1201) is equal to the inner diameter of the feed chamber (12), and the length is the same as that of the baffle plate (15). 7. The horizontal screw centrifuge of the new feeding method according to claim 1, characterized in that, the feeding chamber (12) is arranged in the cavity of the screw pusher (5) and is in the shape of a cylinder , the material enters the cylindrical feed chamber (12) through the feed pipe (13), is stirred by the accelerating impeller (1201), and spreads into the drum (4) through the distributor (14). 8. The horizontal screw centrifuge of the novel feeding method according to claim 1, characterized in that, the described accelerating impeller (1201) is a cylindrical blade, and the accelerating impeller (1201) is welded on the accelerating disc (1202) to pass through Driven by the acceleration motor (9), the outlet diameter of the acceleration impeller (1201) is as large as the inner diameter of the feed chamber (12), increasing the area of the diffused material, and the inlet diameter of the acceleration impeller (1201) is 20-30mm larger than the feed pipe (13), reducing Small materials have an erosion effect on the accelerating impeller (1201). 9. The horizontal screw centrifuge with new feeding method according to claim 1, characterized in that, the said distributor (14) is elongated to avoid greater disturbance to the accelerated materials. 10. The horizontal screw centrifuge with novel feeding method according to claim 1, characterized in that, the material passed into the feeding pipe (13) is drilling fluid.