CN218393927U

CN218393927U - Grinding head group of vacuum grinding pump and vacuum grinding pump

Info

Publication number: CN218393927U
Application number: CN202222792980.6U
Authority: CN
Inventors: 顾耀民; 陈淼; 邱伯龙
Original assignee: HANSUN (SHANGHAI) MARINE TECHNOLOGY CO LTD
Current assignee: HANSUN (SHANGHAI) MARINE TECHNOLOGY CO LTD
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-31
Anticipated expiration: 2032-10-24

Abstract

The utility model relates to a bistrique group and vacuum grinding pump of vacuum grinding pump. The grinding head group comprises a grinding roller and a grinding ring, a plurality of semicircular conical runners are arranged on the periphery of the grinding roller, an outer grinding surface is arranged between every two adjacent semicircular conical runners, a plurality of first toothed annular grooves are formed in the outer grinding surface, runner bottom holes are formed in the tail ends of the semicircular conical runners, and the semicircular conical runners and the runner bottom holes are arranged in an annular matrix along the central axis of the grinding roller; the grinding ring comprises an inner grinding surface corresponding to the outer grinding surface and a runner hole corresponding to the runner bottom hole, a notch is formed in the inner circle of the grinding ring through the runner hole, the inner grinding surface is located on the inner circle of the grinding ring, and a second toothed annular groove matched with the first toothed annular groove is formed in the inner grinding surface.

Description

Grinding head group of vacuum grinding pump and vacuum grinding pump

Technical Field

The utility model relates to a crushing cutter part for vacuum rubbing crusher pump especially discloses a bistrique group and vacuum rubbing crusher pump of vacuum rubbing crusher pump.

Background

The vacuum pump that has crushing function in the existing market, hereinafter simply referred to as vacuum crushing pump. The crushing knife group is generally formed by a movable knife and a static knife. The ubiquitous problem that crushing efficiency is not high, the tool bit wearing and tearing are fast, the pump vibration is big, the noise is high, uses in the industrial place and can also bear. However, under the marine environmental conditions, high crushing efficiency, low running noise, compact structure, safety and reliability are particularly important.

The vacuum crushing pump has the advantages that the vacuum crushing pump adopts the standard motor, is transited through the elastic coupling and then is connected with the pump, has lower requirements on the design and processing of components such as the pump shaft, the crushing cutter set and the like, and has smaller vibration noise during the operation of the pump. But has the disadvantages of large volume and weight, high cost and high manufacturing cost; especially, the volume and the weight are not suitable for equipment such as ships, high-speed rails and the like.

The prior art leading vacuum grinding pump for the ship adopts a special motor, a motor shaft and a pump shaft of the special motor are integrated and are a long shaft output by the motor, the motor is of a flange type base-free structure, and a main pump shell is provided with a base and is shared by the whole pump. The motor without the base is installed in a cantilever mode through the flange and the pump body, so that the structure of the vacuum crushing pump is more compact, and the vacuum crushing pump is suitable for being applied to places such as domestic sewage treatment. However, when the liquid containing solid matters, such as domestic sewage, is pumped, not only the vacuum pumping is required, but also the solid matters contained in the liquid are broken to increase the fluidity, so that the vacuum pumping and conveying are convenient.

The crushing function of a vacuum crushing pump in the current market is realized by a crushing cutter set, and the crushing function is typically realized by adopting a fixed type static cutter and a movable cutter head, wherein the fixed type static cutter is positioned at the downstream of an impeller, the movable cutter head is arranged on the impeller, and the number of the movable cutter head is only one. When the impeller rotates, the moving cutter head positioned on the impeller and the three static cutter heads distributed on the static cutter along the circumference shear. When the impeller rotates for one circle, one movable cutter head and three static cutter heads on the impeller are in close contact once, namely when a medium flows through a gap formed by the impeller and the static cutters, the impeller rotates for one circle, three times of shearing opportunities are provided for the material, and the solid material is crushed. However, in the process of the running of the moving cutter head along with the impeller, the shearing gap in close contact with the static cutter head changes, and when the gap is larger, part of uncut solid matters flow away, so that the crushing rate and the fineness are not high, and the vacuum suction capacity of the pump is also influenced.

Disclosure of Invention

An object of the utility model is to overcome the defect that exists among the prior art, provide a smash efficient, economical and practical, improve the running efficiency of vacuum rubbing crusher pump and vacuum suction ability's vacuum rubbing crusher pump's bistrique group and vacuum rubbing crusher pump.

The utility model discloses a realize like this: a grinding head group of a vacuum grinding pump comprises a grinding roller and a grinding ring, wherein a plurality of semicircular conical runners are arranged on the periphery of the grinding roller, an outer grinding surface is arranged between every two adjacent semicircular conical runners, a plurality of first toothed annular grooves are formed in the outer grinding surface, runner bottom holes are formed in the tail ends of the semicircular conical runners, and the semicircular conical runners and the runner bottom holes are arranged in an annular matrix along the central axis of the grinding roller;

the grinding ring comprises an inner grinding surface corresponding to the outer grinding surface and a runner hole corresponding to the runner bottom hole, a notch is formed in the inner circle of the grinding ring through the runner hole, the inner grinding surface is located on the inner circle of the grinding ring, and a second toothed annular groove matched with the first toothed annular groove is formed in the inner grinding surface.

The front edges of every two adjacent semicircular conical flow passages are connected, and the outer grinding surface is positioned between the rear parts of every two adjacent semicircular conical flow passages.

The tooth height and the tooth width of the first tooth-shaped annular grooves of the outer grinding surface are respectively 1-1.5mm, and the distance between every two adjacent transverse first tooth-shaped annular grooves is 2-3mm.

The center of the grinding roller is provided with a counter bore.

And a positioning flange is arranged on the bottom surface of the rear end of the grinding roller, and a pin hole is formed in one side of the positioning flange, which is positioned on the bottom surface of the rear end of the grinding roller.

The front end of the inner grinding surface is provided with a plurality of inner grinding sharp corners protruding forwards.

The utility model provides a vacuum grinding pump of bistrique group with vacuum grinding pump as above, including consecutive feeding chamber, vacuum suction chamber, ejection of compact chamber and motor, the intracavity is equipped with the impeller in the vacuum suction, the output shaft of motor passes the ejection of compact chamber gets into the vacuum suction chamber and passes the impeller with the grinding roller of bistrique group links to each other, the top in feeding chamber is equipped with the pump import, the pump import with be equipped with the check valve plate between the feeding chamber, the feeding chamber with be equipped with the subchamber wall between the vacuum suction chamber, be equipped with bistrique group mounting hole on the subchamber wall, the grinding roller of bistrique group is located in bistrique group mounting hole, and the rear end of grinding roller with the front end of impeller links to each other, the grinding ring cover is established outside the grinding roller, the grinding ring is located the feeding intracavity is fixed on the subchamber wall.

The grinding roller, the impeller and the motor output shaft are positioned on the same central axis, and the central axis is lower than the central axis of the vacuum suction cavity.

The rear end of the grinding roller is connected with the impeller through an elastic cylindrical pin.

And a mechanical shaft seal is arranged on the motor output shaft positioned in the discharge cavity.

The utility model has the advantages that: the grinding roller and the grinding ring of the grinding head group adopt independent structures, so that solid matters in a liquid medium can be fully ground and ground, and the grinding rate of the pump is improved. The grinding head group changes the medium containing solid substances into liquid with better fluidity, thereby improving the operation efficiency and the vacuum suction capacity. The structure of the pump is optimized, the grinding efficiency is high, and the vacuum suction capacity is strong.

Drawings

Fig. 1 is a schematic structural view of the vacuum grinding pump of the present invention.

Fig. 2 is a left-side structural view of fig. 1.

Fig. 3 is a schematic diagram of the structural relationship between the grinding head set and the feeding cavity and the vacuum pumping cavity of the vacuum grinding pump of the present invention.

Fig. 4 is a schematic structural diagram of a grinding roller of the grinding head set of the present invention.

Fig. 5 is a front view of the grinding roller of the grinding head set of the present invention.

Fig. 6 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 5.

Fig. 7 is a schematic structural view of the grinding ring of the grinding head set of the present invention.

Fig. 8 is a comfort view of the grinding ring of the grinding head set of the present invention.

Fig. 9 is a sectional view B-B of fig. 8.

Wherein: 1. a pump inlet; 2. A check valve plate; 3. a feed cavity; 4. grinding the roller; 5. grinding a ring; 6. an impeller; 7. A vacuum pumping chamber; 8. a discharge cavity; 9. an outlet of the pump; 10. A mechanical shaft seal; 11. a motor; 12. a chamber dividing wall; 13. an output shaft; 14. an elastic cylindrical pin;

21. a semi-conical runner; 22. a runner bottom hole; 23. externally grinding the surface; 24. a counter bore; 25. a positioning flange; 26. a pin hole; 27. a first toothed annular groove;

31. internally grinding the surface; 32. a flow passage hole; 33. a grinding ring mounting hole; 34. internally grinding sharp corners; 35. a second toothed annular groove.

Detailed Description

According to fig. 4-9, the utility model relates to a bistrique group of vacuum grinding pump, including grinding roller 4 and grinding ring 5, grinding roller 4 is equipped with a plurality of half-cone runner 21 all around, half-cone runner 21 follows grinding roller 4's excircle is milled and is formed. The number of the semicircular conical flow passages 21 is 4-6, preferably 5, an outer grinding surface 23 is arranged between every two adjacent semicircular conical flow passages 21, and the outer grinding surface 23 is a residual excircle obtained by subtracting the semicircular conical flow passages 21 from a cylinder where the grinding roller 4 is located. Specifically, the front edges of every two adjacent semicircular conical flow passages 21 are connected, and the outer grinding surface 23 is located between the rear parts of every two adjacent semicircular conical flow passages 21. The outer grinding surface 23 is provided with a plurality of first toothed annular grooves 27, the tooth height and the tooth width of the first toothed annular grooves 27 of the outer grinding surface 23 are respectively 1-1.5mm, and the distance between every two adjacent transverse first toothed annular grooves 27 is 2-3mm. The tail end of the semicircular conical flow passage 21 is provided with a flow passage bottom hole 22, and the semicircular conical flow passage 21 and the flow passage bottom hole 22 are arranged in an annular matrix along the central axis of the grinding roller 4 to form a medium and vacuum suction flow passage at the grinding roller 4. The grinding roller 4 is provided with a counter bore 24 in the center, and the grinding roller 4 is fixed on the front end of the output shaft 13 of the motor 11 through the counter bore 24 by using hexagon socket head cap screws. And a positioning flange 25 is arranged on the bottom surface of the rear end of the grinding roller 4 and is matched with the concave edge of the impeller 6 so as to ensure the coaxiality of the grinding roller 4, the impeller 6 and the motor 11. One side of the positioning flange 25 is provided with a pin hole 26 in the bottom surface of the rear end of the grinding roller 4. The grinding roller 4 and the impeller 6 are operated synchronously by connecting the pin hole 26 to another impeller pin hole located on the impeller 6 by means of a resilient cylindrical pin.

The grinding ring 5 comprises an inner grinding surface 31 corresponding to the outer grinding surface 23 and a runner hole 32 corresponding to the runner bottom hole 22, the grinding ring 5 is in a flat cylindrical shape, the runner hole 32 forms a notch on the inner circle of the grinding ring 5, a semi-cylindrical kidney hole is preferably selected as the runner hole 32, and the position of the runner hole 32 corresponds to the conical surface of the semi-conical runner 21 and the bottom hole 22 so as to ensure the flowing of a medium and the generation of a vacuum degree. The inner grinding surface 31 is positioned on the inner circle of the grinding ring 5, and a second toothed annular groove 35 matched with the first toothed annular groove 27 is arranged on the inner grinding surface 31. The second toothed annular groove 35 is dimensioned to match the toothed groove of the grating roller 4. The inner grinding surface 31 of the grinding ring 5 is matched with the outer grinding surface 23 of the grinding roller 4 to grind and refine solid matters in a medium flowing through. The front end of the inner grinding surface 31 is provided with a plurality of inner grinding sharp corners 34 protruding forwards, and the number of the inner grinding sharp corners 34 corresponds to the number of the inner grinding surface 31 one by one. The inner cusps 34 solve the problem of crushing larger materials before grinding, and larger solid matters in the medium are firstly sheared and crushed by the inner cusps 34 before the medium flows through the flow passage formed by the grinding roller 4 and the grinding ring 5. The medium containing the relatively fine solids then flows through the grinding head set consisting of the outer grinding surface 23 of the grinding roller 4 and the inner grinding surface 31 of the grinding ring 5, and the solids in the medium are ground to achieve a sufficient flowability of the medium.

According to fig. 1-3, combine fig. 4-9, the utility model relates to a vacuum grinding pump of bistrique group with vacuum grinding pump as above, including consecutive feeding chamber 3, vacuum suction chamber 7, ejection of compact chamber 8 and motor 11, be equipped with impeller 6 in the vacuum suction chamber 7, the output shaft 13 of motor 11 passes from the back to the front ejection of compact chamber 8 gets into vacuum suction chamber 7 and passes impeller 6 with the grinding roller 4 of bistrique group links to each other. A mechanical shaft seal 10 is arranged on an output shaft 13 of the motor in the discharging cavity 8, and the mechanical shaft seal 10 is used for dynamically sealing the medium in the pump and the output shaft 13 of the motor 11 so that the medium cannot permeate into the motor 11. The upper end of the discharging cavity 8 is provided with a pump outlet 9. The top in feeding chamber 3 is equipped with pump inlet 1, pump inlet 1 with be equipped with check valve plate 2 between the feeding chamber 3, feeding chamber 3 with be equipped with subchamber wall 12 between the vacuum suction chamber 7, be equipped with grinding head group mounting hole on the subchamber wall 12, grinding roller 4 of grinding head group is located in the grinding head group mounting hole, and the rear end of grinding roller 4 pass through elasticity cylindric lock 14 with the front end of impeller 6 links to each other, 5 covers of grinding ring are established outside grinding roller 4, be equipped with grinding ring mounting hole 33 on the grinding ring 5, grinding ring 5 is located in feeding chamber 3 and fix through grinding ring mounting hole 33 and set screw on the subchamber wall 12.

The grinding roller 4, the impeller 6 and the output shaft 13 of the motor 11 are located on the same central axis, and the central axis is lower than the central axis of the vacuum suction chamber 7.

The utility model discloses an output shaft 3 of motor 11 is direct simultaneously as the pump shaft respectively with impeller and bistrique group link, under the same condition of power, not only makes the structure compacter, has promoted the crushing efficiency to containing solid-state thing in the solid-state thing liquid simultaneously, increases mobility, improves the vacuum suction degree, has promoted conveying capacity.

The utility model discloses during the use, treat that the medium of grinding gets into feeding chamber 3 through from pump inlet 1, through impeller 6's vacuum suction and pump sending, the medium is broken by bistrique group, the back of grinding, flows through vacuum suction chamber 7, through ejection of compact chamber 8, pump export 9 again, and the vacuum collection cabinet is sent to in the pipeline, accomplishes the vacuum collection and the transport of medium.

The utility model discloses a bistrique group has realized the solid state thing that can thoroughly smash the medium, has improved the vacuum suction ability of pump and operating system's vacuum. Through research and development verification and comparison for more than two years, the loading of the utility model discloses each item performance of the vacuum grinding pump of grinding head group is obviously superior to like product, and application prospect is considerable.

Present like product with the utility model discloses the main technical performance index look-up table of vacuum grinding pump.

Technical parameters	Existing like products	The utility model discloses	Comparison of Performance
				Pump motor power	Standard motor 3kW	Motor 3kW	The power is the same
Average degree of pulverization	90.26	95.63	↑6.0%
				Maximum degree of vacuum	73%	82%	↑12.3%
Processing capacity	19.5	26.0	↑33.3%
				Rated air extraction rate @ -4bar	10.4	14.1	↑35.6%
Rated displacement @3m	9.2	11.8	↑28.3%

According to the upper table, the utility model discloses the vacuum grinding pump of bistrique group with vacuum grinding pump has all had great promotion on average crushing degree, maximum vacuum, throughput, rated air extraction, rated displacement.

Claims

1. The utility model provides a bistrique group of vacuum grinding pump which characterized in that: the grinding roll comprises a grinding roll and a grinding ring, wherein a plurality of semicircular conical runners are arranged on the periphery of the grinding roll, an outer grinding surface is arranged between every two adjacent semicircular conical runners, a plurality of first toothed annular grooves are formed in the outer grinding surface, runner bottom holes are formed in the tail ends of the semicircular conical runners, and the semicircular conical runners and the runner bottom holes are arranged in an annular matrix along the central axis of the grinding roll;

2. The grinding head set of a vacuum grinding pump according to claim 1, wherein: the front edges of every two adjacent semicircular conical flow passages are connected, and the outer grinding surface is positioned between the rear parts of every two adjacent semicircular conical flow passages.

3. The grinding head group of a vacuum grinding pump as set forth in claim 1, wherein: the tooth height and the tooth width of the first tooth-shaped annular grooves of the outer grinding surface are respectively 1-1.5mm, and the distance between every two adjacent transverse first tooth-shaped annular grooves is 2-3mm.

4. The grinding head set of a vacuum grinding pump according to claim 1, wherein: the center of the grinding roller is provided with a counter bore.

5. The grinding head set of a vacuum grinding pump according to claim 1, wherein: and a positioning flange is arranged on the bottom surface of the rear end of the grinding roller, and a pin hole is formed in one side of the positioning flange, which is positioned on the bottom surface of the rear end of the grinding roller.

6. The grinding head set of a vacuum grinding pump according to claim 1, wherein: the front end of the inner grinding surface is provided with a plurality of inner grinding sharp corners protruding forwards.

7. A vacuum grinding pump having a grinding head set of the vacuum grinding pump of claim 1, characterized in that: including consecutive feeding chamber, vacuum suction chamber, play material chamber and motor, the intracavity is equipped with the impeller in the vacuum suction, the output shaft of motor passes go out the material chamber and get into the vacuum suction chamber and pass the impeller with the grinding roller of bistrique group links to each other, the top in feeding chamber is equipped with the pump import, the pump import with be equipped with the check valve plate between the feeding chamber, the feeding chamber with be equipped with the branch chamber wall between the vacuum suction chamber, be equipped with bistrique group mounting hole on the branch chamber wall, the grinding roller of bistrique group is located in the bistrique group mounting hole, and the rear end of grinding roller with the front end of impeller links to each other, the grinding ring cover is established outside the grinding roller, the grinding ring is located the feeding intracavity is fixed divide chamber wall to go up.

8. The vacuum grinding pump of the grinding head set of the vacuum grinding pump as set forth in claim 7, wherein: the grinding roller, the impeller and the motor output shaft are positioned on the same central axis, and the central axis is lower than the central axis of the vacuum suction cavity.

9. The vacuum grinding pump of the grinding head set of the vacuum grinding pump as set forth in claim 7, wherein: the rear end of the grinding roller is connected with the impeller through an elastic cylindrical pin.

10. The vacuum grinding pump of the grinding head set of the vacuum grinding pump as set forth in claim 7, wherein: and a mechanical shaft seal is arranged on the motor output shaft positioned in the discharge cavity.