Spiral mixer
By designing a dosing pipe above the spiral shaft and a spiral shaft rotating in the opposite direction in the spiral mixer, the problem of uneven mixing of drugs and sludge is solved, achieving uniform mixing and synchronous conveying of drugs and sludge, and improving the efficiency of deep dewatering treatment of sludge.
Patent Information
- Application Number
- CN202423029041.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing spiral mixers cannot effectively achieve uniform mixing and synchronous conveying of drugs and sludge, making it difficult to meet the needs of deep sludge dewatering treatment.
A spiral mixer was designed, comprising a drive unit, a housing, a spiral shaft, and a dosing device. A dosing pipe is provided above the spiral shaft, and the spiral shaft and the dosing pipe extend in the same direction. The drug is uniformly mixed by utilizing gravity and the stirring effect of the spiral shaft, and the mixing and conveying of materials are achieved by the parallel active and driven spiral shafts rotating in opposite directions.
It achieves uniform mixing and synchronous transportation of drugs and sludge, improving the efficiency of deep sludge dewatering treatment.
Smart Images
Figure CN223586963U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage treatment field, concretely relates to a spiral mixer. BACKGROUND
[0002] The spiral mixer is a component part of the equipment for deep dewatering of the sewage treatment plant. With the market demand for deep dewatering of sludge, the development of the sludge deep dewatering host is completed, and the related supporting equipment needs to be developed. The spiral mixer is a component part of the sludge deep dewatering of the sewage treatment plant. According to the requirement of the sludge deep treatment process, the sludge with a water content of 80% needs to be added with a medicament and sent to the sludge deep dewatering treatment unit, so a mixer capable of conveying materials, adding medicaments and mixing and stirring is needed, and the functions of conveying, stirring and mixing are realized simultaneously. SUMMARY
[0003] In view of the defects of the prior art, the utility model aims at providing a spiral mixer which can add medicaments and mix uniformly.
[0004] To achieve the purpose of the utility model, the utility model provides a spiral mixer which comprises a driving device, a shell, a spiral shaft and a medicament adding device, the driving device is installed at a first end of the shell and connected with the spiral shaft, the spiral shaft is located in the shell and extends to a second end of the shell, the first end of the shell is provided with a feeding port, the second end of the shell is provided with a discharging port, the medicament adding device comprises a medicament adding pipe arranged in the shell, the medicament adding pipe is located above the spiral shaft and extends in the same direction with the spiral shaft, and the medicament adding pipe is provided with a plurality of medicament adding holes which are uniformly distributed along the length direction of the shell and face the spiral shaft.
[0005] In some embodiments of the utility model, the spiral shaft comprises a driving screw shaft and a driven screw shaft arranged side by side, the driving device is connected with the driving screw shaft, the end of the driving screw shaft and the end of the driven screw shaft are connected with a gear assembly, and the gear assembly is configured to make the driving screw shaft and the driven screw shaft have the same rotating speed and opposite rotating directions.
[0006] In some embodiments of the utility model, the driving screw shaft and the driven screw shaft respectively comprise a column body and a plurality of blades, the plurality of blades are spirally arranged on the circumferential surface of the column body, and the adjacent blades have a gap.
[0007] In some embodiments of the utility model, the corresponding central angle of the column body, in which a single blade extends in the circumferential direction of the column body, is less than 360°.
[0008] In some embodiments of the utility model, one of the spiral arrangement direction of the blade of the driving screw shaft and the spiral arrangement direction of the blade of the driven screw shaft is clockwise, and the other is counterclockwise.
[0009] In some embodiments of the utility model, the driving screw shaft and the driven screw shaft further respectively comprise flanges, the flanges are arranged at two ends of the column body, the feeding port and the discharging port are located between the two flanges of the same column body, the two flanges of the driving screw shaft are connected with the gear and the driving device respectively, the screw shaft further comprises a support shaft rotatably arranged at the first end of the shell, and the two flanges of the driven screw shaft are connected with the gear and the support shaft respectively.
[0010] In some embodiments of the utility model, the two dosing pipes are arranged above the driving screw shaft and the driven screw shaft respectively.
[0011] In some embodiments of the utility model, the bottom of the shell is provided with two parallel arc surfaces, and the two arc surfaces are close to the driving screw shaft and the driven screw shaft respectively.
[0012] In some embodiments of the utility model, the gear is arranged outside the second end of the shell.
[0013] In some embodiments of the utility model, the gear assembly comprises a synchronous gear, a bearing set, a tail shaft and a gear cover, the gear cover is arranged outside the second end of the shell, the synchronous gear comprises two synchronous gears with the same number of teeth and meshing with each other, the tail shaft is connected with the synchronous gear and the screw shaft, and the bearing set is arranged between the tail shaft and the shell.
[0014] In some embodiments of the utility model, the shell comprises a groove body and a cover body, the groove body is provided with an upward opening, the cover body covers the opening, and the dosing pipe is connected to the groove body and close to the opening.
[0015] In some embodiments of the utility model, the shell further comprises a C-shaped pipe support arranged on the side wall of the groove body, the C-shaped pipe support is elastic, and the dosing pipe is arranged in the C-shaped pipe support.
[0016] In some embodiments of the utility model, the C-shaped pipe support is a plurality of, and the plurality of C-shaped pipe supports are uniformly distributed on the groove body.
[0017] In some embodiments of the utility model, the shell further comprises a lining plate arranged close to the inner wall of the groove body.
[0018] In some embodiments of the utility model, the shell is inclined, the first end of the shell is lower than the second end of the shell, and the first end of the shell is additionally provided with a drain port.
[0019] In some embodiments of the utility model, the discharge port is arranged at the bottom of the second end of the shell.
[0020] In some embodiments of the utility model, the driving device comprises a variable frequency speed reducer, a bearing seat, a driving shaft, a sealing assembly and a tapered roller bearing, the variable frequency speed reducer is connected to the first end of the bearing seat, the second end of the bearing seat is connected to the first end of the shell, the driving shaft is partially arranged in the bearing seat, the first end of the driving shaft is connected to the variable frequency speed reducer, the second end of the driving shaft is connected to the spiral shaft, the tapered roller bearing is arranged between the driving shaft and the bearing seat, and the sealing assembly is arranged between the driving shaft and the bearing seat and close to the shell.
[0021] In some embodiments of the utility model, the dosing device further comprises a dosing port and a valve arranged at the dosing port, and the dosing port is arranged at the end of the dosing pipe close to the first end of the shell.
[0022] Compared with the prior art, the utility model can achieve the following beneficial effects:
[0023] The spiral mixer of the utility model utilizes the spiral shaft to convey materials, utilizes the dosing pipe arranged above the spiral shaft and extending in the same direction to dose materials conveyed by the spiral shaft, so that the medicine can be mixed into the materials under the action of gravity, and the medicine and the materials can be uniformly mixed and synchronously conveyed under the stirring and conveying actions of the spiral shaft. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is the front view structural schematic diagram of the utility model spiral mixer embodiment.
[0025] Figure 2 It is the top view structural schematic diagram of the utility model spiral mixer embodiment.
[0026] Figure 3 It is the side view structural schematic diagram of the utility model spiral mixer embodiment.
[0027] Figure 4 It is the structural schematic diagram of the driving device in the utility model spiral mixer embodiment.
[0028] Figure 5 It is the structural schematic diagram of the gear assembly in the utility model spiral mixer embodiment.
[0029] Figure 6 It is the structural exploded view of the spiral shaft in the utility model spiral mixer embodiment.
[0030] Figure 7 This is a schematic diagram of the structure of the dosing device and the shell in an embodiment of the spiral mixer of this utility model.
[0031] Figure 8 This is a schematic diagram of the structure of the dosing device, the spiral shaft and the housing in an embodiment of the spiral mixer of this utility model.
[0032] Figure 9 yes Figure 8 Enlarged structural diagram of the circled part.
[0033] In the diagram, 10-drive device, 11-frequency converter, 12-bearing housing, 13-drive shaft, 14-sealing assembly, 15-tapered roller bearing, 20-housing, 21-feed inlet, 22-discharge outlet, 23-arc surface, 24-trough, 25-cover, 26-C-type pipe support, 27-liner, 28-drain outlet, 30-spiral shaft, 31-drive screw shaft, 32-driven screw shaft, 33-cylinder, 34-blade, 35-flange, 40-dosing device, 41-dosing pipe, 42-dosing hole, 43-dosing port, 44-valve, 50-gear assembly, 51-synchronous gear, 52-bearing assembly, 53-tail shaft, 54-gear cover, 60-support shaft.
[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation
[0035] like Figures 1 to 9 As shown, this embodiment of the invention provides a screw mixer that can be used with a deep dewatering machine. It efficiently mixes and stirs sludge cake and chemicals, and can convey the mixture along its length. Sludge with high moisture content is unloaded from the wet sludge silo and enters the screw mixer. After being added to the mixture, it is then mixed and conveyed to the deep dewatering equipment. The screw mixer can be securely fixed to the ground using a support frame. The screw mixer of this embodiment has a simple and compact structure, good sealing performance, small footprint, and is easy to maintain. This screw mixer can also be widely used in the fields of resource and environmental technology or other fields for mixing and conveying various materials.
[0036] Specifically, the spiral mixer of this embodiment includes a drive device 10, a housing 20, a spiral shaft 30, and a dosing device 40.
[0037] The drive device 10 is installed at the first end of the housing 20 and connected to the spiral shaft 30. The drive device 10 is used to drive the spiral shaft 30 to rotate. The spiral shaft 30 has a spiral extension structure, which can compress and mix materials and transport the materials along the length of the spiral shaft 30.
[0038] A screw shaft 30 is located in the housing 20 and extends to the second end of the housing 20, the housing 20 provides a bearing for the material, and the screw shaft 30 is used to transport the material from the first end of the housing 20 to the second end of the housing 20.
[0039] The first end of the housing 20 is provided with a feed port 21, and the sludge with a high water content can enter the housing 20 from the feed port 21. The second end of the housing 20 has a discharge port 22, and the sludge mixed by adding chemicals can be discharged from the discharge port 22 and enter the deep dewatering equipment.
[0040] The chemical adding device 40 includes a chemical adding pipe 41 arranged in the housing 20, the chemical adding pipe 41 is located above the screw shaft 30 and extends in the same direction as the screw shaft 30, the chemical adding pipe 41 is used to add chemicals, the chemical adding pipe 41 has a plurality of chemical adding holes 42 facing the screw shaft 30, the chemical adding holes 42 are used to apply chemicals to the material, since the chemical adding pipe 41 is located above the screw shaft 30, the chemicals can diffuse to the material under the action of gravity, and mix uniformly with the material mixture under the compression and stirring of the screw shaft 30. The chemical adding pipe 41 can be made of hard PVC material, and the chemical adding holes 42 are uniformly arranged on the upper surface of the chemical adding pipe 41 facing the groove 24, which can make the chemicals uniformly sprayed in the groove 24, so that the mixing is more uniform.
[0041] In some examples, the screw shaft 30 includes a driving screw shaft 31 and a driven screw shaft 32 arranged side by side, the axis of the driving screw shaft 31 and the axis of the driven screw shaft 32 are parallel to each other, and the screw mixer is a double screw mixer. The driving device 10 is connected with the driving screw shaft 31, the ends of the driving screw shaft 31 and the driven screw shaft 32 are connected with a gear assembly 50, the gear assembly 50 is used to transmit power, and the gear assembly 50 is configured such that the driving screw shaft 31 and the driven screw shaft 32 have the same speed and opposite directions, and the reverse rotation of the driving screw shaft 31 and the driven screw shaft 32 can make the material be extruded and mixed in the middle of the double screw, so that the material mixing is more uniform. For example, the driving device 10 can drive the driving screw shaft 31 to rotate clockwise, and the driven screw shaft 32 rotates counterclockwise under the action of the gear assembly 50.
[0042] In some examples, the driving screw shaft 31 and the driven screw shaft 32 respectively include a column body 33 and a plurality of blades 34, the plurality of blades 34 are arranged in a spiral on the circumferential surface of the column body 33, and there are gaps between adjacent blades 34. The blades 34 are discontinuously and uniformly arranged on the column body 33, and the discontinuous gaps on the circumference of the column body 33, i.e. the notches, can play a role in colliding and stirring the material, and the blades 34 can also play a role in conveying the material forward.
[0043] In some examples, the single blade 34 extends circumferentially around the column 33 by an angle less than 360°, for example less than or equal to 180°, for example less than or equal to 90°. Such an arrangement ensures that there is at least one gap in the blade 34 around the column 33, which facilitates mixing of the material.
[0044] In some examples, one of the helical arrangement of the blades 34 of the driving screw 31 and the helical arrangement of the blades 34 of the driven screw 32 is clockwise and the other is counterclockwise as viewed from the first end of the housing 20, which avoids interference between the blades 34 and provides different directions of shearing force for the material mixing, which facilitates uniform mixing of the material.
[0045] In some examples, the driving screw 31 and the driven screw 32 further comprise flanges 35 respectively, the flanges 35 are arranged at both ends of the column 33, the feeding port 21 and the discharging port 22 are located between the two flanges 35 of the same column 33, and the flanges 35 are used for connection. The two flanges 35 at both ends of the driving screw 31 are connected to the gear assembly 50 and the driving device 10 respectively. The helical shaft 30 further comprises a support shaft 60 rotatably arranged at the first end of the housing 20, and the two flanges 35 of the driven screw 32 are connected to the gear assembly 50 and the support shaft 60 respectively.
[0046] In some examples, the two dosing pipes 41 are arranged above the driving screw and the driven screw respectively, which facilitates more uniform dosing.
[0047] In some examples, the bottom of the housing 20 has two parallel arc surfaces 23, and the two arc surfaces 23 are close to the driving screw 31 and the driven screw 32 respectively. The arc surfaces 23 can reduce dead angles and reduce the retention of the material in the housing 20.
[0048] In some examples, the gear assembly 50 is arranged outside the second end of the housing 20, which avoids the material entering the gear assembly 50 and causing the gear assembly 50 to be easily damaged.
[0049] In some examples, the gear assembly 50 comprises a synchronous gear 51, a bearing set 52, a tail shaft 53, and a gear cover 54. The gear cover 54 is arranged outside the second end of the housing 20, the synchronous gear 51 is located in the gear cover 54, and the gear cover 54 plays a protective role. The synchronous gear 51 comprises two synchronous gears 51 with the same number of teeth and meshing with each other, which ensures the synchronism of the driving screw 31 and the driven screw 32, i.e. the number of revolutions is equal and the directions are opposite, which can effectively avoid the interference between the driving screw 31 and the driven screw 32. The tail shaft 53 connects the synchronous gear 51 and the helical shaft 30, and the bearing set 52 is arranged between the tail shaft 53 and the housing 20. The tail shaft 53 and the bearing set 52 cooperate to achieve rotatable connection.
[0050] In some examples, the shell 20 comprises a groove body 24 with an upward opening and a cover body 25 covering the opening, facilitating the opening and closing of the shell 20. The dosing pipe 41 is connected to the groove body 24 near the opening, facilitating the installation, replacement and maintenance of the dosing pipe 41.
[0051] In some examples, the shell 20 further comprises a C-shaped pipe holder 26 arranged on the side wall of the groove body 24, the C-shaped pipe holder 26 being elastic, and the dosing pipe 41 being arranged in the C-shaped pipe holder 26, facilitating the installation and removal of the dosing pipe 41. The C-shaped pipe holder 26 can be multiple, and the multiple C-shaped pipe holders 26 are uniformly distributed on the groove body 24, and the dosing pipe 41 is exposed between adjacent C-shaped pipe holders 26, facilitating the application of the medicine, and saving the cost of the C-shaped pipe holder 26.
[0052] In some examples, the shell 20 further comprises a lining plate 27 arranged close to the inner wall of the groove body 24, which can play a role of wear resistance, and the lining plate 27 can be made of polyethylene.
[0053] In some examples, the shell 20 is arranged obliquely, the first end of the shell 20 is lower than the second end of the shell 20, and the discharge port 22 is arranged at the bottom of the second end of the shell 20, so that the discharge port 22 is lifted to facilitate the direct conveying of the material to the next process. The first end of the shell 20 is also provided with a drain port 28, and when the spiral mixer needs to be cleaned, the cleaning water in the groove body 24 can flow to the drain port 28 under the action of gravity and be discharged from the drain port 28.
[0054] In some examples, the driving device 10 comprises a variable frequency reducer 11, a bearing seat 12, a driving shaft 13, a sealing assembly 14 and a tapered roller bearing 15. The variable frequency reducer 11 is connected to the first end of the bearing seat 12, the second end of the bearing seat 12 is connected to the first end of the shell 20, and the connection between the variable frequency reducer 11 and the shell 20 is realized. The driving shaft 13 is partially located in the bearing seat 12, the first end of the driving shaft 13 is connected to the variable frequency reducer 11, the second end of the driving shaft 13 is connected to the spiral shaft 30, and the tapered roller bearing 15 is arranged between the driving shaft 13 and the bearing seat 12, realizing the rotatable manufacture of the driving shaft 13. The sealing assembly 14 is arranged between the driving shaft 13 and the bearing seat 12 and close to the shell 20, avoiding material leakage. The variable frequency reducer 11 can change the speed of the spiral shaft 30 according to the process requirements, thereby changing the mixing time and the conveying amount. The pair of back-to-back installed tapered roller bearings 15 can well bear the axial force generated on the spiral shaft 30 during the material mixing and conveying process.
[0055] In some examples, the dosing device 40 further comprises a dosing port 43 and a valve 44 arranged at the dosing port 43. The dosing port 43 is arranged at the end of the dosing pipe 41 close to the first end of the shell 20. The dosing port 43 is used for adding medicine, and the valve 44 is used for controlling the opening and closing of the dosing port 43.
[0056] Finally, it needs to be emphasized that the above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A spiral mixer, characterized in that... The device includes a drive unit, a housing, a spiral shaft, and a dosing device. The drive unit is installed at a first end of the housing and connected to the spiral shaft. The spiral shaft is located inside the housing and extends to a second end of the housing. The first end of the housing has a feed inlet, and the second end of the housing has a discharge outlet. The dosing device includes a dosing tube disposed inside the housing. The dosing tube is located above the spiral shaft and extends in the same direction as the spiral shaft. The dosing tube has a plurality of dosing holes evenly distributed along the length of the housing and facing the spiral shaft.
2. The spiral mixer according to claim 1, characterized in that... The helical shaft includes a driving helical shaft and a driven helical shaft arranged side by side. The driving device is connected to the driving helical shaft. The ends of the driving helical shaft and the driven helical shaft are connected to gear assemblies. The gear assemblies are configured such that the driving helical shaft and the driven helical shaft rotate at the same speed but in opposite directions.
3. A spiral mixer according to claim 2, characterized in that... The driving screw shaft and the driven screw shaft each include a cylinder and a plurality of blades, the plurality of blades being spirally arranged on the circumferential surface of the cylinder, with gaps between adjacent blades; The central angle of the column corresponding to the circumferential extension of a single blade is less than 360°. Viewed from the first end of the housing, the helical arrangement direction of the blades of the driving screw shaft and the helical arrangement direction of the blades of the driven screw shaft are either clockwise or counterclockwise. The driving screw shaft and the driven screw shaft each include a flange, which is disposed at both ends of the column. The feed port and the discharge port are located between the two flanges of the same column. The two flanges of the driving screw shaft are respectively connected to the gear assembly and the drive device. The screw shaft also includes a support shaft rotatably disposed at the first end of the housing. The two flanges of the driven screw shaft are respectively connected to the gear assembly and the support shaft.
4. A spiral mixer according to claim 2, characterized in that... There are two dosing tubes, which are respectively located above the driving screw shaft and above the driven screw shaft; And / or, the bottom of the housing has two parallel arcuate surfaces, the two arcuate surfaces being close to the driving screw shaft and the driven screw shaft respectively; And / or, the gear assembly is located on the outer side of the second end of the housing.
5. A spiral mixer according to claim 2, characterized in that... The gear assembly includes a synchronizing gear, a bearing assembly, a tail shaft, and a gear cover. The gear cover is located on the outer side of the second end of the housing. The synchronizing gear is located inside the gear cover. The synchronizing gear includes two meshing synchronizing gears with the same number of teeth. The tail shaft connects the synchronizing gear and the helical shaft. The bearing assembly is located between the tail shaft and the housing.
6. A screw mixer according to any one of claims 1 to 5, characterized in that... The housing includes a tank and a cover, the tank having an upward opening, the cover covering the opening, and the dosing tube connected to the tank and close to the opening.
7. A spiral mixer according to claim 6, characterized in that... The housing also includes a C-shaped tube support disposed on the side wall of the tank, the C-shaped tube support being elastic, and the dosing tube being disposed inside the C-shaped tube support; There are multiple C-shaped pipe supports, and the multiple C-shaped pipe supports are evenly distributed on the tank body; The housing also includes a liner plate disposed close to the inner wall of the tank.
8. A screw mixer according to any one of claims 1 to 5, characterized in that... The housing is inclined, with the first end of the housing being lower than the second end of the housing, and a drain outlet is provided at the bottom of the first end of the housing; The discharge port is located at the bottom of the second end of the shell.
9. A screw mixer according to any one of claims 1 to 5, characterized in that... The drive device includes a frequency converter, a bearing housing, a drive shaft, a sealing assembly, and a tapered roller bearing. The frequency converter is connected to a first end of the bearing housing, and a second end of the bearing housing is connected to a first end of the housing. The drive shaft is partially located inside the bearing housing. The first end of the drive shaft is connected to the frequency converter, and the second end of the drive shaft is connected to the helical shaft. The tapered roller bearing is disposed between the drive shaft and the bearing housing. The sealing assembly is disposed directly between the drive shaft and the bearing housing and close to the housing.
10. A screw mixer according to any one of claims 1 to 5, characterized in that... The dosing device further includes a dosing port and a valve located at the dosing port, the dosing port being located at the end of the dosing tube near the first end of the housing.