No-clean high-speed vortex pulping machine

Abstract

The utility model discloses a no-clean high-speed vortex pulping machine, which relates to the field of high-speed vortex pulping machines, and adopts the technical scheme that the no-clean high-speed vortex pulping machine comprises a mounting underframe and a pump inlet pipe, the top end of the mounting underframe is fixedly connected with a stirring barrel through a supporting rod, and a transfer pump is mounted at the top end of the mounting underframe and positioned beside the stirring barrel; the bottom of the stirring barrel is connected with one end of a pump inlet pipe in a communicating mode, the other end of the pump inlet pipe is connected with the inlet end of a transfer pump through a flange, the outlet end of the transfer pump is connected with a pneumatic three-way flange ball valve through a flange, and two outlets of the pneumatic three-way flange ball valve are connected with an upper backflow pipe and a transfer pipe respectively. The device has the advantages that no extra stirring shaft needs to be arranged, eddy current formed in the stirring barrel has enough shearing force to destroy the agglomeration phenomenon of cement particles, the surfaces of all the particles are wetted by water, the development of the dispersion phenomenon is promoted, and the cleaning-free effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of high-speed eddy current pulping machines, and more specifically, to a cleaning-free high-speed eddy current pulping machine. Background Art

[0002] To meet the evolving requirements of prestressed concrete grouting technology, grouting material preparation equipment must meet requirements such as low water-cement ratios (<0.4), uniform distribution of slurry components, and rapid slurry production. For low water-cement ratio applications, grouting stations typically utilize high-speed eddy current slurry mixers to mix and stir the slurry, in order to quickly break down cement particle agglomeration and reduce mixing time.

[0003] Due to limitations in their internal structure and stirring mechanism, existing high-speed vortex pulpers are prone to forming mixing blind spots near the vessel walls and bottom corners. In these areas, the material struggles to receive sufficient stirring force. Near the vessel walls, the vortex strength rapidly diminishes due to the obstruction of the wall, preventing the material from being fully drawn into the vortex for mixing and pulping.

[0004] Application number: 202223364463.5; discloses a high-speed vortex pulping machine that reduces the blind spot of stirring, including a stirring tank, the stirring tank having a top cover, a feed port and a water inlet pipe on the top cover, and a main stirring power device on the top cover; secondary stirring power devices are symmetrically provided on the left and right sides of the main stirring power device; a main stirring shaft is provided at the axis of the main stirring chamber, and the main stirring shaft is equipped with a main stirring paddle; secondary stirring shafts are vertically provided on the left and right sides of the main stirring chamber, and each secondary stirring shaft is equipped with a secondary stirring paddle; two sets of slurry driving mechanisms are symmetrically provided on the left and right sides of the stirring tank on the frame. In order to reduce the dead angle and blind spot of stirring, the above comparative documents arrange multiple stirring shafts in the barrel. After the pulping is completed, the slurry, unmixed cement or mineral admixture are easily accumulated on the stirring shaft and stirring blades, which need to be manually cleaned, which is relatively troublesome.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a no-cleaning high-speed vortex pulping machine. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a high-speed eddy current pulping machine that does not require cleaning.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cleaning-free high-speed vortex pulping machine, comprising a mounting base and a pump inlet pipe, the top of the mounting base is fixedly connected to a mixing barrel through a support rod, and a transfer pump is installed at the top of the mounting base next to the mixing barrel, the bottom of the mixing barrel is interconnected with one end of the pump inlet pipe, and the other end of the pump inlet pipe is connected to the inlet end of the transfer pump through a flange, the outlet end of the transfer pump is connected to a pneumatic three-way flange ball valve through a flange, and the two outlets of the pneumatic three-way flange ball valve are respectively connected to the upper return pipe and the transfer pipe, and the head of the upper return pipe extends into the mixing barrel.

[0008] Preferably, the mixing barrel is welded by an upper cylindrical barrel and a lower eccentric inverted cone barrel to prevent the liquid surface in the mixing barrel from being concave in the center and rising at the outer edge under the strong influence of the vortex, thereby forming a cylindrical poorly mixed area in the center.

[0009] Preferably, a cutting disc is installed on the impeller of the transfer pump, and the cutting disc rotates at high speed along with the pump shaft, thereby generating a strong vortex at the pump suction port, shearing the sucked slurry to achieve a uniform stirring effect.

[0010] Preferably, the inner wall of the mixing barrel is coated with an anti-sticking agent, which makes it difficult for the slurry to adhere and facilitates flushing.

[0011] Preferably, a feed port is provided above the mixing barrel, and the pump inlet pipe is provided with a water inlet ball valve and a discharge ball valve in sequence from top to bottom.

[0012] Preferably, the upper return pipe of the mixing barrel is connected to the pneumatic three-way flange ball valve through a rubber soft joint. The rubber soft joint has good elasticity. During the operation of the system, pressure fluctuations and vibrations may be generated due to the flow of the fluid. In particular, when the pneumatic three-way flange ball valve is opened or closed, it may cause impacts such as water hammer effect in the pipeline. The rubber soft joint can effectively absorb these vibrations and impacts.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention does not require an additional stirring shaft. The vortex formed in the mixing barrel has sufficient shear force to destroy the agglomeration of cement particles and wet the surface of each particle with water, thereby promoting the development of the dispersion phenomenon. Since there is no stirring shaft and baffle inside the barrel, there is no structural dead angle, and slurry, unmixed cement or mineral admixtures will not accumulate in the barrel. After the slurry is pumped, clean water is added to the mixing barrel, the pneumatic three-way flange ball valve is switched to the stirring working position, and the transfer pump is turned on for several cycles. The sewage can be discharged through the discharge ball valve, and the pulping machine can be exempted from cleaning, thereby solving the problem in the background technology that after pulping is completed, slurry, unmixed cement or mineral admixtures are easily accumulated on the stirring shaft and stirring blades, requiring manual cleaning, which is relatively troublesome.

[0015] 2. To prevent the liquid level in the mixing barrel from sinking in the center and rising at the outer edges under the strong influence of eddy currents, forming a cylindrical, poorly mixed zone in the center, the utility model is constructed by welding an upper cylindrical barrel and a lower eccentric inverted cone barrel, eliminating the need for additional baffles on the barrel's inner wall. The lower eccentric inverted cone barrel prevents the expansion of eddies, breaking up any eddies that develop at the cone surface, and shearing cement particles near the cone surface, resulting in a more even distribution of the slurry components.

[0016] 3. The impeller of this utility model's transfer pump is equipped with a cutting disc that rotates at high speed along with the pump shaft, generating a strong vortex at the pump inlet, shearing the incoming slurry and achieving a uniform mixing effect. After agglomerated cement particles enter the pump inlet, the cutting disc also destroys the initial hydration product film coating on their surface, allowing them to continue to hydrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model

[0019] Figure 2 This is a schematic diagram of the specific structure of the side portion of the utility model;

[0020] Figure 3 For this utility model Figure 1 A magnified view of the local structure of (inside the mixing barrel);

[0021] Figure 4 For this utility model Figure 2 A magnified view of the local structure of B (inside the transfer pump).

[0022] In the figure: 1. Mounting base; 2. Support rod; 3. Mixing barrel; 301. Upper cylindrical barrel; 302. Lower eccentric inverted cone barrel; 4. Transfer pump; 5. Pump inlet pipe; 6. Pneumatic three-way flanged ball valve; 7. Upper return pipe; 8. Transfer pipe; 9. Cutting disc; 10. Anti-sticking agent; 11. Feed inlet; 12. Rubber flexible joint; 13. Water inlet ball valve; 14. Discharge ball valve. DETAILED DESCRIPTION

[0023] like Figure 1-4 As shown, the utility model provides a cleaning-free high-speed vortex pulping machine, including a mounting base 1 and a pump inlet pipe 5, the top of the mounting base 1 is fixedly connected to the mixing barrel 3 through a support rod 2, and is characterized in that: a transfer pump 4 is installed at the top of the mounting base 1, which is located next to the mixing barrel 3, the bottom of the mixing barrel 3 is interconnected with one end of the pump inlet pipe 5, and the other end of the pump inlet pipe 5 is connected to the inlet end of the transfer pump 4 through a flange, the outlet end of the transfer pump 4 is connected to the pneumatic three-way flange ball valve 6 through a flange, and the two outlets of the pneumatic three-way flange ball valve 6 are respectively connected to the upper return pipe 7 and the transfer pipe 8, and the head of the upper return pipe 7 extends into the mixing barrel 3; a feed port 11 is provided above the mixing barrel 3, and the pump inlet pipe 5 is provided with a water inlet ball valve 13 and a discharge ball valve 14 from top to bottom.

[0024] It should be noted that the flow rate (L / min) of the transfer pump 4 is three times the capacity (L) of the mixing barrel 3. This ensures that the slurry flowing from the bottom of the mixing barrel 3 and the slurry ejected tangentially along the inner wall from the upper return pipe 7 have sufficient velocity components, eliminating the need for an additional agitator shaft. The vortex formed within the mixing barrel 3 has sufficient shear force to break up cement particle agglomeration and ensure that the surface of each particle is wetted with water, promoting the development of dispersion. Because there is no agitator shaft or baffle inside the barrel, there are no structural dead corners, and no accumulation of slurry, unmixed cement, or mineral admixtures within the barrel.

[0025] When slurrying begins, the water inlet ball valve 13 is opened to pump water into the mixing barrel 3, and cement or mineral admixture is poured into the mixing barrel 3 through the feed port 11; after the pneumatic three-way flange ball valve 6 is switched to the mixing working position, the pump outlet pipe and the rubber flexible joint 12 are connected; through the pump inlet pipe 5 at the lower part of the mixing barrel 3, the mixing water, cement or mineral are pumped by the transfer pump 4 to the upper return pipe 7 above the mixing barrel 3, and are deflected downward at a certain angle and sprayed out along the inner wall of the mixing barrel 3. After slurrying is completed, the pneumatic three-way flange ball valve 6 is switched to the transfer working position, the pump outlet pipe and the transfer pipe 8 are connected, and the slurry is pumped to the desired location;

[0026] After the slurry is pumped, add clean water into the mixing barrel 3, switch the pneumatic three-way flange ball valve 6 to the stirring working position and start the transfer pump 4 for several cycles, and discharge the sewage through the discharge ball valve 14. The pulping machine can be exempted from cleaning (cleaning here specifically refers to manual cleaning).

[0027] To prevent the liquid level in mixing drum 3 from sinking in the center and rising at the outer edges under the intense influence of eddy currents, creating a cylindrical, poorly mixed zone at the center, the drum is welded together from an upper cylindrical body 301 and a lower, eccentric, inverted cone 302. This eliminates the need for additional baffles on the inner wall (which would create stagnant areas where unmixed cement or mineral admixtures could accumulate). The lower, eccentric, inverted cone 302 prevents eddy currents from expanding, breaking up any that reach the cone surface. It also shears cement particles near the cone surface, ensuring a more even distribution of the slurry's components.

[0028] Furthermore, the upper return pipe 7 of the mixing drum 3 is connected to the pneumatic three-way flange ball valve 6 via a rubber flexible joint 12. The rubber flexible joint 12 has good elasticity. During system operation, the flow of fluid may generate pressure fluctuations and vibrations. In particular, when the pneumatic three-way flange ball valve 6 is opened or closed, it may cause shocks such as water hammer in the pipeline. The rubber flexible joint 12 can effectively absorb these vibrations and shocks, preventing them from being transmitted to the mixing drum 3 or other connected equipment, reducing the risk of damage to the equipment due to long-term vibration and extending the service life of the equipment. The impeller of the transfer pump 4 is equipped with a cutting disc 9. The cutting disc 9 rotates at high speed with the pump shaft, generating a strong vortex at the pump intake, shearing the sucked slurry and achieving a uniform mixing effect. After the agglomerated cement particles enter the pump intake, the cutting disc 9 also destroys the initial hydration product film coating on their surface, allowing them to continue to hydrate. In addition, the inner wall of the mixing drum 3 is coated with an anti-sticking agent 10, which prevents the slurry from adhering to it and facilitates rinsing.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A high-speed vortex pulping machine without cleaning, comprising a mounting base (1) and a pump inlet pipe (5), wherein the top end of the mounting base (1) is fixedly connected to a stirring barrel (3) via a support rod (2), and characterized in that: A transfer pump (4) is installed at the top of the mounting base (1) located next to the mixing barrel (3). The bottom of the mixing barrel (3) is interconnected with one end of the pump inlet pipe (5), and the other end of the pump inlet pipe (5) is connected to the inlet end of the transfer pump (4) through a flange. The outlet end of the transfer pump (4) is connected to a pneumatic three-way flange ball valve (6) through a flange. The two outlets of the pneumatic three-way flange ball valve (6) are respectively connected to an upper return pipe (7) and a transfer pipe (8). The head of the upper return pipe (7) extends into the mixing barrel (3).

2. The cleaning-free high-speed vortex pulping machine according to claim 1, characterized in that: The mixing barrel (3) is formed by welding an upper cylindrical barrel (301) and a lower eccentric inverted cone barrel (302).

3. The cleaning-free high-speed vortex pulping machine according to claim 1, characterized in that: A cutting disc (9) is mounted on the impeller of the transfer pump (4).

4. The cleaning-free high-speed vortex pulping machine according to claim 1, characterized in that: The inner wall of the mixing barrel (3) is coated with an anti-sticking agent (10).

5. The cleaning-free high-speed vortex pulping machine according to claim 1, characterized in that: A feed port (11) is provided above the mixing barrel (3), and a water inlet ball valve (13) and a discharge ball valve (14) are provided on the pump inlet pipe (5) in sequence from top to bottom.

6. The cleaning-free high-speed vortex pulping machine according to claim 1, characterized in that: The upper return pipe (7) of the mixing barrel (3) is connected to the pneumatic three-way flange ball valve (6) through a rubber flexible joint (12).

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