Horizontal screw centrifuge with mechanism for adjusting depth of liquid pool without shutdown

Abstract

The invention discloses a horizontal screw centrifuge with a non-stop liquid pool depth adjusting mechanism, which comprises a housing, a rotating drum rotatably connected in the housing, a screw propeller arranged in the rotating drum, an end cover arranged at the side end of the rotating drum, a rotating seat arranged at the side end of the end cover, a supporting seat arranged at the side end of the rotating seat, a feeding pipe arranged in the rotating drum, and a liquid pool arranged between the end cover and the rotating seat, a mounting seat is arranged on the feeding pipe, a centripetal pump is fixed on the mounting seat, a water outlet pipe is mounted on the supporting seat, a first communication channel is arranged between the water outlet pipe and the liquid pool, a mounting flange sleeves the side end of the feeding pipe, a dial is arranged at the side end of the mounting flange, a turntable is arranged at the side end of the dial, and a pull rod is arranged on the turntable; an overflow port is formed in the supporting seat, a second communication channel is arranged between the overflow port and the liquid pool, and an overflow plate is arranged at the liquid pool. The structural design is ingenious and reasonable, the depth of the liquid pool can be accurately adjusted, the liquid flow of the water outlet pipe can be accurately controlled, and therefore the separation effect and treatment capacity of the stock solution are controlled, and the device is worthy of application and popularization.

Description

Technical Field

[0001] The invention relates to the field of centrifuges, in particular to a horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine. Background Art

[0002] When the centrifuge is working, the raw liquid (sludge that has been mixed with flocculants) enters the feed section of the screw conveyor axially from the rotation center of the centrifuge through the feed pipe, and is accelerated and changed direction by the acceleration cone inside the high-speed rotating spiral body. Various liquids are mixed evenly and thrown radially into the high-speed rotating drum. Under the action of the centrifugal force field that is thousands of times greater than gravity, the solid phase with a larger specific gravity quickly settles on the drum wall, while the clear liquid with a smaller specific gravity is squeezed to the center of the drum. The centrifuge drum and the screw propeller rotate at high speed in the same direction, but their speeds are different and there is a certain speed difference. Due to the speed difference between the drum and the spiral, the solid phase is pushed to the cone section outlet by the screw conveyor and discharged. Out of the machine, and the clear liquid is driven by the raw liquid that continuously enters the centrifuge and is discharged from the centrifuge through the overflow hole at the big end of the drum. The clear liquid is divided into oil and water. When the oil passes through the big end of the drum, it is directly discharged from the liquid outlet located below the big end of the drum, and the water is discharged from the water outlet. During the discharge of the water, the depth of the liquid pool cannot be controlled, resulting in the inability to accurately control the discharge flow rate of the water outlet. Therefore, when a large amount of raw liquid enters through the feed pipe, if a large amount of water cannot be discharged, it will directly affect the processing efficiency of the raw liquid. In severe cases, it will cause the raw liquid to be blocked and the centrifuge to stop. The depth of the liquid part in the centrifuge and its size directly affect the separation effect and processing volume of the raw liquid.

[0003] Chinese utility model patent CN 220941238 U discloses a decanter centrifuge with separation function, which includes a centrifuge body and a bracket, wherein the brackets are fixedly provided at the four corners of the bottom of the centrifuge body, two groups of mounting seats are symmetrically provided below the bracket, four groups of support columns are provided between the two groups of mounting seats and the bracket, the four groups of support columns are slidably connected to the lower end of the bracket, the lower end of the support column is fixedly connected to the mounting seat, a cavity is provided inside the bracket, an adjustment component for driving the support column to rise and fall is provided inside the cavity, a detection component for assisting in detecting whether the two ends of the centrifuge body are in the same horizontal plane is provided between the left and right groups of the brackets, and a hanging tool is provided on the top of the centrifuge body. The decanter centrifuge cannot adjust the depth of the liquid pool, and thus cannot accurately control the separation effect and processing volume of the stock liquid. Summary of the invention

[0004] The present invention aims to solve the shortcomings of the above-mentioned prior art and provide a horizontal screw centrifuge with a mechanism for adjusting the depth of the liquid pool without stopping the machine, which can accurately control the size of the liquid flow rate at the water outlet and the depth of the liquid pool, thereby meeting the needs of accurately controlling the size of the liquid flow rate at the water outlet and the depth of the liquid pool, thereby controlling the separation effect and processing volume of the raw liquid.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: the horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine comprises a cover shell, a drum is rotatably connected inside the cover shell, a screw propeller is rotatably connected inside the drum and has a speed difference with the rotation of the drum, an end cover is fixed to the side end of the drum, a rotating seat is fixed to the side end of the end cover, a support seat is provided at the side end of the rotating seat, a first bearing is installed between the rotating seat and the support seat, a feed pipe is provided inside the drum, a liquid pool is provided between the end cover and the rotating seat, a mounting seat is fixed on the feed pipe, a centripetal pump located at the liquid pool is fixed on the mounting seat, an outlet pipe is installed on the support seat, and a A first connecting channel, a mounting flange is sleeved on the side end of the feed pipe, a first sealing ring installed on the feed pipe is arranged between the mounting flange and the feed pipe, a dial is fixed on the side end of the mounting flange, a turntable fixed at the feed pipe is arranged on the side end of the dial, and a pull rod is fixed on the turntable; an overflow port is opened on the support seat, a second connecting channel is arranged between the overflow port and the liquid pool, and an overflow plate is fixed at the liquid pool; a supporting round block is sleeved on the feed pipe, a matching block is fixed on the side end of the screw propeller, a second bearing is installed between the supporting round block and the matching block, and a group of connecting plates evenly distributed along the center of the end cover are fixed between the supporting round block and the end cover. The function of the drum and the screw propeller here is to utilize the differential to make the drum and the screw propeller maintain a constant speed difference, so as to separate the solid and liquid of the material and discharge it; the function of the feed pipe here is to feed the raw liquid; the function of the liquid pool provided between the end cover and the rotating seat here is to store and discharge the clear liquid; the function of the centripetal pump here is to quickly extract the clear liquid and discharge it through the first connecting channel and the outlet pipe, and the centripetal pump here extracts and discharges the clear liquid; the function of the mounting flange here is to connect with the feed pipeline; the function of the dial, turntable, adjusting rod and mounting seat here is to adjust the angle of the centripetal pump, so as to change the amount of clear liquid extracted by the centripetal pump and the depth of the liquid pool, so as to To control the amount of raw liquid entering, the larger the amount entering, the more clear liquid is produced, the more the suction port of the centrifugal pump faces downward to suck more, the less the amount of raw liquid entering, the less clear liquid is produced, the suction port of the centrifugal pump faces upward in an arc shape to suck less, so that the discharge flow rate of the water outlet of the water outlet can be conveniently controlled to be accurately controlled, thereby accurately controlling the depth of the liquid pool, and then controlling the separation effect and processing volume of the raw liquid; the function of the overflow port, the second connecting channel, the overflow plate, and the overflow pipe here is to allow the oil in the clear liquid to flow to the second connecting channel through the overflow plate, and then be separated and discharged from the overflow port and the overflow pipe, thereby speeding up the discharge of the clear liquid from the centrifuge, avoiding the occurrence of slow discharge caused by high oiliness and slow fluidity when the water and oil are mixed and discharged.The function of the supporting round block, matching block, second bearing and connecting plate here is to support the end of the screw propeller, so that the screw propeller and the drum can run more stably and efficiently when there is a speed difference in the same direction; the function of the first bearing installed between the rotating seat and the support seat here is to ensure that the support seat remains stationary when the special seat runs at high speed, thereby facilitating the discharge of oil; the function of the cover shell here is to prevent the clear liquid from splashing when the original liquid is separated, so that the centrifuge runs more cleanly and safely.

[0006] Further improvement, a suspension plate is fixed on the support seat, and a handle screw is threaded on the suspension plate. The function of the suspension plate and the handle screw is to lock the position of the centripetal pump after the rotation angle, so as to avoid the centripetal pump from position deviation during operation, and the centripetal pump cannot control the liquid level at the specified position for a long time.

[0007] Further improvement, the overflow plate is provided with a transverse opening. The function of the transverse opening is that the oil on the clear liquid will be suspended on the water liquid because of its lower density than water. Therefore, when the clear liquid is large and the oil cannot be discharged through the overflow plate in time, the transverse opening can be used to increase the discharge of the oil, so that a large amount of raw liquid can also be processed.

[0008] Further improvement, the support seat is provided with a dredging hole. The function of the dredging hole is to facilitate observation of the overflow port area, and to facilitate clearing of blockages and cleaning of oil substances when there is blockage or cleaning is required.

[0009] Further improvement, an overflow pipe is installed at the overflow port. The function of the overflow pipe here is to discharge the oil to a designated location.

[0010] Further improvement, a support with an "L" shaped cross section is fixed on the outer contour of the rotating seat, a matching seat is fixed on the bottom of the cover shell, and a matching opening for matching with the support is opened on the matching seat. The function of the support and the matching opening here is to prevent the clear liquid generated in the cover shell from being thrown out from the connection of the cover shell, and play a good sealing role.

[0011] Further improvement, the cover shell includes an upper plate and a lower plate, a wave-shaped bending plate is fixed between the upper plate and the lower plate, a cavity is opened in the bending plate, the cavity is filled with water, the gap between the bending plates is filled with sound insulation cotton, and a group of rubber strips evenly distributed along the arc direction of the cover shell are fixed on the upper plate and the lower plate, and the support point of the bending plate is located at the two rubber strips. Here, the upper plate, the lower plate, the bending plate, the cavity, the water, the sound insulation cotton, and the rubber strips are used to isolate the noise generated by the operation of the horizontal screw centrifuge through the sound insulation cotton, so that the horizontal screw centrifuge has low noise during operation, and the bending plate, the cavity, and the water can play a better role in vibration reduction and noise reduction; the rubber strips can also play a further role in vibration reduction and noise reduction; here, through multiple vibration reduction, noise reduction and sound insulation functions, the horizontal screw centrifuge runs more quietly, has a good thermal insulation effect, and is more comfortable for operators during operation. The horizontal screw centrifuge equipped with a refrigeration unit can better maintain its temperature, which is beneficial to the raw liquid that needs to be separated at a specific temperature.

[0012] The beneficial effects of the present invention are:

[0013] 1). It can accurately control the depth of the liquid pool, so as to control the discharge flow rate of the outlet;

[0014] 2). The discharge volume and liquid pool depth of the outlet can be controlled by changing the angle of the centripetal pump;

[0015] 3). The clear liquid is divided into oil and water. The oil is discharged through the overflow plate, and the water is pumped out by the centripetal pump and discharged through the outlet pipe. This can reduce the problem of high viscosity of the oil causing the centripetal pump to reduce the drainage effect.

[0016] 4). The end of the screw propeller can be supported by the supporting round block, the matching block, the second bearing and the connecting plate, so that the screw propeller and the drum can run more stably and efficiently when there is a speed difference in the same direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 A local enlarged view of area A;

[0019] Figure 3 for Figure 1 A local enlarged view of area B;

[0020] Figure 4 It is a schematic diagram of the structure of the cover shell in the present invention;

[0021] Figure 5 for Figure 4 A partial enlarged view of the middle C area;

[0022] Figure 6 The working principle flow chart of the centripetal pump when the liquid inlet is located at the bottom of the liquid pool in the present invention Figure 1 ;

[0023] Figure 7 The working principle flow of the centripetal pump after the liquid inlet is rotated by an angle Figure 2 .

[0024] Explanation of the reference numerals: cover shell 1, mating seat 1a, mating port 1a-1, upper plate 1-1, lower plate 1-2, bending plate 1-3, water 1-4, sound insulation cotton 1-5, rubber strip 1-6, drum 2, screw propeller 3, end cover 4, swivel seat 5, support seat 6, overflow port 6-1, dredging hole 6-2, first bearing 7, feed pipe 8, liquid pool 9, centripetal pump 10, water outlet pipe 11, first connecting channel 12, mounting flange 13, first sealing ring 14, dial 15, turntable 16, pull rod 17, second connecting channel 18, overflow plate 19, transverse opening 19-1, support round block 20, mating block 21, second bearing 22, connecting plate 23, hanging plate 24, handle screw 25, overflow pipe 26, support 27. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] Referring to the accompanying drawings: This horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine comprises a cover 1, a drum 2 is rotatably connected in the cover 1, a screw propeller 3 with a speed difference with the drum 2 is rotatably connected in the drum 2, an end cover 4 is fixed to the side end of the drum 2, a rotating seat 5 is fixed to the side end of the end cover 4, a support seat 6 is provided at the side end of the rotating seat 5, a first bearing 7 is installed between the rotating seat 5 and the support seat 6, a feed pipe 8 is provided in the drum 1, a liquid pool 9 is provided between the end cover 4 and the rotating seat 5, a mounting seat 8-1 is fixed on the feed pipe 8, a centripetal pump 10 located at the liquid pool 9 is fixed on the mounting seat 8-1, a water outlet pipe 11 is installed on the support seat 6, a first connecting channel 12 is provided between the water outlet pipe 11 and the liquid pool 9, and the side end of the feed pipe 8 A mounting flange 13 is sleeved, and a first sealing ring 14 installed on the feed pipe 8 is provided between the mounting flange 13 and the feed pipe 8, a dial 15 is fixed to the side end of the mounting flange 13, and a turntable 16 fixed to the feed pipe 8 is provided at the side end of the dial 15, and a pull rod 17 is fixed to the turntable 16; an overflow port 6-1 is opened on the support seat 6, a second connecting channel 18 is provided between the overflow port 6-1 and the liquid pool 9, and an overflow plate 19 is fixed to the liquid pool 6; a supporting round block 20 is sleeved on the feed pipe 8, a matching block 21 is fixed to the side end of the screw propeller 3, a second bearing 22 is installed between the supporting round block 20 and the matching block 21, and a group of connecting plates 23 evenly distributed along the center of the end cover 4 are fixed between the supporting round block 20 and the end cover 4.

[0027] A hanging plate 24 is fixed on the support seat 6 , and a handle screw 25 is threadedly connected to the hanging plate 24 .

[0028] The overflow plate 19 is provided with a transverse opening 19 - 1 .

[0029] The support seat 6 is provided with a dredging hole 6 - 2 .

[0030] An overflow pipe 26 is installed at the overflow port 6-1.

[0031] A support 27 with an L-shaped cross section is fixed on the outer contour of the rotating seat 5 , and a matching seat 1 a is fixed on the bottom of the cover shell 1 . The matching seat 1 a is provided with a matching opening 1 a - 1 that matches with the support 27 .

[0032] The cover shell 1 includes an upper plate 1-1 and a lower plate 1-2, a wave-shaped bending plate 1-3 is fixed between the upper plate 1-1 and the lower plate 1-2, a cavity 1-3a is opened in the bending plate 1-3, the cavity 1-3a is filled with water 1-4, and the gap between the bending plates 1-3 is filled with sound insulation cotton 1-5. A group of rubber strips 1-6 evenly distributed along the arc direction of the cover shell 1 are fixed on the upper plate 1-1 and the lower plate 1-2, and the supporting points of the bending plate 1-3 are located at the two rubber strips 1-6.

[0033] The working principle of the present invention is as follows: the depth of the liquid pool refers to the depth of the liquid part in the centrifuge, and its size directly affects the separation effect and processing volume of the stock liquid; when the stock liquid enters the rotation center of the centrifuge through the feed pipe 8 and enters the feed section of the screw propeller 3 along the axial direction, it is accelerated and changed direction by the acceleration cone inside the high-speed rotating spiral body, and various liquids are mixed evenly, and thrown into the high-speed rotating drum 2 along the radial direction. Under the action of the centrifugal force field that is thousands of times greater than gravity, the solid phase with a larger specific gravity quickly settles to the wall of the drum 2, while the clear liquid with a smaller specific gravity is The centrifuge drum 2 and the screw propeller 3 rotate at high speed in the same direction, but their rotation speeds are different, and there is a certain speed difference. Due to the speed difference between the centrifuge drum 2 and the screw propeller 3, the solid phase is pushed to the cone section outlet by the screw propeller 3 and discharged out of the machine. Under the driving effect of the original liquid that continuously enters the centrifuge, the oil in the clear liquid will pass through the overflow plate 19, and then pass through the second connecting channel 18 and the overflow port 6-1 to be discharged. The water in the clear liquid is extracted by the centrifugal pump 10 and discharged through the first connecting channel 12 and the water outlet pipe 11 (such as Figure 1 , Figure 6As shown), in this way, the oil and water in the clear liquid can be discharged through different paths, avoiding the discharge of the oil-water mixed clear liquid through the centripetal pump 10, which is easy to reduce the discharge speed of the centripetal pump 10 (the oil has high viscosity), thereby affecting the adjustment and control of the depth of the liquid pool; when the angular position of the centripetal pump 10 needs to be changed, it is only necessary to pull the pull rod 17 and refer to the rotation angle on the dial 15. At this time, the pull rod 17 will pull the feed pipe 8 to rotate, and then the mounting seat 8-1 on the feed pipe 8 will also rotate together, and then the centripetal pump 10 fixed on the mounting seat 8-1 will also move and rotate with it, so that the position of the liquid inlet suction port on the centripetal pump 10 will move, and the liquid inlet suction port on the centripetal pump 10 will move up, indicating that the suction depth of the liquid pool 9 by the centripetal pump 10 will change, that is, the clear liquid below the liquid inlet suction port of the centripetal pump 10 cannot be pumped away, and then the depth of the liquid pool 9 can be accurately adjusted (as shown in the figure). Figure 1 , Figure 7 As shown), finally, tighten the handle screw 25, so that the top end of the handle screw 25 is pressed tightly against the turntable 16, thereby preventing the centripetal pump 10 from loosening during operation and failing to control the liquid level at a specified position for a long time. This makes it convenient and efficient to control the separation effect and processing volume of the stock liquid, and is worthy of popularization and application.

[0034] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine, comprising a housing (1), a drum (2) rotatably connected inside the housing (1), a screw propeller (3) rotatably connected inside the drum (2) and having a speed difference with the drum (2), wherein: An end cover (4) is fixed to the side end of the rotating drum (2), a rotating seat (5) is fixed to the side end of the end cover (4), a supporting seat (6) is provided at the side end of the rotating seat (5), a first bearing (7) is installed between the rotating seat (5) and the supporting seat (6), a feed pipe (8) is provided in the rotating drum (1), a liquid pool (9) is provided between the end cover (4) and the rotating seat (5), a mounting seat (8-1) is fixed to the feed pipe (8), a centripetal pump (10) located at the liquid pool (9) is fixed to the mounting seat (8-1), and the supporting seat (6) is provided with a first bearing (7) between the rotating seat (5) and the supporting seat (6). ) is installed with a water outlet pipe (11), a first communication channel (12) is provided between the water outlet pipe (11) and the liquid pool (9), a mounting flange (13) is sleeved on the side end of the feed pipe (8), a first sealing ring (14) installed on the feed pipe (8) is provided between the mounting flange (13) and the feed pipe (8), a scale plate (15) is fixed on the side end of the mounting flange (13), a rotating disk (16) fixed on the feed pipe (8) is provided on the side end of the scale plate (15), and a pull rod (17) is fixed on the rotating disk (16); The support seat (6) is provided with an overflow port (6-1), a second communication channel (18) is provided between the overflow port (6-1) and the liquid pool (9), and an overflow plate (19) is fixed at the liquid pool (6); A supporting round block (20) is sleeved on the feed pipe (8), a matching block (21) is fixed to the side end of the screw propeller (3), a second bearing (22) is installed between the supporting round block (20) and the matching block (21), and a group of connecting plates (23) evenly distributed along the center of the end cover (4) are fixed between the supporting round block (20) and the end cover (4).

2. A horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine according to claim 1, characterized in that: A hanging plate (24) is fixed on the support seat (6), and a handle screw (25) is threadedly connected to the hanging plate (24).

3. A horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine according to claim 1, characterized in that: The overflow plate (19) is provided with a transverse opening (19-1).

4. A horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine according to claim 1, characterized in that: The support seat (6) is provided with a dredging hole (6-2).

5. The horizontal screw centrifuge with a mechanism for adjusting the depth of the liquid pool without stopping the machine according to claim 1, characterized in that: An overflow pipe (26) is installed at the overflow port (6-1).

6. A horizontal screw centrifuge with a mechanism for adjusting the depth of a liquid pool without stopping the machine according to claim 1, characterized in that: A support (27) with an L-shaped cross section is fixed on the outer contour of the rotating seat (5), a matching seat (1a) is fixed on the bottom of the cover shell (1), and a matching opening (1a-1) that matches the support (27) is opened on the matching seat (1a).

7. The horizontal screw centrifuge with a mechanism for adjusting the depth of the liquid pool without stopping the machine according to claim 1, characterized in that: The cover shell (1) comprises an upper plate (1-1) and a lower plate (1-2), a wave-shaped bending plate (1-3) is fixed between the upper plate (1-1) and the lower plate (1-2), a cavity (1-3a) is opened in the bending plate (1-3), the cavity (1-3a) is filled with water (1-4), the gap between the bending plates (1-3) is filled with sound insulation cotton (1-5), and a group of rubber strips (1-6) uniformly arranged along the arc direction of the cover shell (1) are fixed on the upper plate (1-1) and the lower plate (1-2), and the support points of the bending plate (1-3) are located at the two rubber strips (1-6).

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