Homogenizing pump

Abstract

The utility model relates to a homogenizing pump. The homogenizing pump comprises a shell, a rotating shaft, a movable ring, a sealing piece, a static ring and an air blowing mechanism. The moving ring is hermetically connected to the rotating shaft; the sealing piece, the shell and the movable ring define an air inlet channel communicated with the processing cavity, and the sealing piece and the movable ring define an exhaust channel; the static ring is connected to the sealing piece and can get close to and get away from the movable ring in the axial direction of the rotating shaft. The air blowing mechanism is connected with the sealing piece and can blow air into the air inlet channel so as to push the static ring to be away from the movable ring and form a sealing gap between the static ring and the movable ring, and the sealing gap communicates with the air inlet channel and the exhaust channel. The air blowing mechanism blows air into the air inlet channel, a sealing gap is formed between the movable ring and the static ring, meanwhile, air can enter the processing cavity through the air inlet channel, and materials in the processing cavity are prevented from entering the air inlet channel. The contact between the moving ring and the static ring is avoided while the processing cavity is sealed, so that the abrasion between the moving ring and the static ring is avoided, the sealing effect of long-term operation is ensured, and the use reliability of the homogenizing pump is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of emulsification equipment, and specifically relates to a homogenizing pump. Background Art

[0002] In the fine chemical industry, homogenizing pumps are often used for mixed transportation of solid and liquid phases. As a mature solid-liquid mixed transportation equipment, the homogenizing pump can break up large particles while conveying the mixed medium through the cooperation of the stator and the rotor. At present, homogenizing pumps usually use mechanical contact seals, but mechanical contact seals will generate friction and heat during rotation due to the direct contact between the dynamic ring and the static ring, and the contact surface is prone to wear after long-term operation, resulting in a decrease in the sealing effect. Utility Model Content

[0003] The technical problem to be solved by the present application is that the existing homogenizing pump adopts a contact sealing method, and the contact surface is easily worn out during long-term operation, resulting in a decrease in the sealing effect. A homogenizing pump that can operate for a long time and ensure the sealing effect is provided.

[0004] The technical solution proposed in this application is:

[0005] A homogenizing pump, comprising:

[0006] A housing having a processing chamber;

[0007] A rotating shaft, one end of which passes through the shell and extends into the processing chamber;

[0008] A dynamic ring, sealingly connected to the rotating shaft;

[0009] A sealing member, sealingly connected to the housing, wherein the sealing member, the housing and the dynamic ring together form an air inlet passage communicating with the processing chamber, and the sealing member and the dynamic ring together form an exhaust passage;

[0010] A stationary ring connected to the sealing member, and capable of approaching and moving away from the dynamic ring along the axial direction of the rotating shaft;

[0011] The blowing mechanism is connected to the sealing member and can blow air into the air inlet passage to push the stationary ring away from the dynamic ring and form a sealing gap between the stationary ring and the dynamic ring, wherein the sealing gap is connected to the air inlet passage and the exhaust passage.

[0012] Furthermore, it also includes an elastic member, which is connected between the sealing member and the static ring and is used to provide a force to make the static ring approach the dynamic ring.

[0013] Furthermore, the air blowing mechanism includes an air source and an air blowing pipeline, and the air source is connected to the sealing component through the air blowing pipeline.

[0014] Furthermore, the air blowing mechanism further comprises a pressure reducing valve and a pressure detector, the pressure reducing valve and the pressure detector are both arranged in the air blowing pipeline, and the pressure detector is arranged between the pressure reducing valve and the sealing member.

[0015] Furthermore, the blowing mechanism also includes a flow meter, and the flow meter is arranged in the blowing pipeline.

[0016] Furthermore, the air blowing mechanism also includes a filter, and the filter is arranged in the air blowing pipeline.

[0017] Furthermore, it also includes a stator and a rotor, the stator is arranged on the inner wall of the processing chamber, the rotor is arranged on the part of the rotating shaft extending into the processing chamber, a homogenization channel is formed between the stator and the rotor, and the stator and the rotor constitute a homogenization structure that separates the processing chamber, and the homogenization channel can connect the spaces on both sides of the homogenization structure.

[0018] Furthermore, the homogenizing pump comprises a plurality of the homogenizing structures, and the plurality of the homogenizing structures are arranged at intervals along the axial direction of the rotating shaft.

[0019] Furthermore, the shell is further provided with an inlet and an outlet communicated with the processing chamber, and the inlet and the outlet are respectively communicated with the spaces on both sides of the homogenizing structure.

[0020] Furthermore, it also includes a driving member, which is connected to an end of the rotating shaft away from the shell.

[0021] When the above homogenizing pump is used, during the rotation of the rotating shaft, the moving ring rotates relative to the stationary ring, and the blowing mechanism blows air into the air inlet channel to form a sealing gap between the moving ring and the stationary ring. At the same time, the gas can also enter the processing chamber through the air inlet channel to prevent the material in the processing chamber from entering the air inlet channel. In this way, the moving ring can be prevented from contacting the stationary ring while sealing the processing chamber, thereby avoiding wear between the moving ring and the stationary ring, ensuring the sealing effect of long-term operation, and improving the reliability of the homogenizing pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification. They are used to explain the present application together with the embodiments of the present application and do not constitute a limitation of the present application.

[0023] Figure 1 A schematic diagram of the structure of a homogenizing pump provided in one embodiment of the present application.

[0024] Description of labels:

[0025] 10. Homogenizing pump; 11. Shell; 111. Processing chamber; 112. Inlet; 113. Outlet; 12. Rotating shaft; 13. Seal; 14. Stator; 15. Rotor; 20. Air blowing mechanism; 21. Air blowing pipeline; 22. Filter; 23. Pressure reducing valve; 24. Pressure detector; 25. Flow meter; 16. Driving part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] like Figure 1 As shown, an embodiment of the present application provides a homogenizing pump 10 , including a housing 11 , a rotating shaft 12 , a dynamic ring, a sealing member 13 , a static ring and a blowing mechanism 20 .

[0029] The housing 11 has a processing chamber 111, and the homogenization of the material can be performed in the processing chamber 111. One end of the rotating shaft 12 passes through the housing 11 and extends into the processing chamber 111, and the dynamic ring is seal-connected to the rotating shaft 12 and is located outside the housing 11. The sealing member 13 is seal-connected to the housing 11, and the sealing member 13, the housing 11 and the dynamic ring enclose an air inlet channel connected to the processing chamber 111, and the sealing member 13 and the dynamic ring enclose an exhaust channel.

[0030] The stationary ring is connected to the seal 13, and the stationary ring can approach and move away from the dynamic ring along the axial direction of the rotating shaft 12. The blowing mechanism 20 is connected to the seal 13, and can blow air into the air inlet passage to push the stationary ring away from the dynamic ring and form a sealing gap between the stationary ring and the dynamic ring, and the sealing gap is connected to the air inlet passage and the exhaust passage.

[0031] It can be understood that the rotating shaft 12 passes through the shell 11 , and there is a gap between the rotating shaft 12 and the shell 11 . The gap is connected to the air inlet passage, so the air inlet passage is connected to the processing chamber 111 .

[0032] With the above-mentioned homogenizing pump, during the rotation of the rotating shaft 12, the moving ring rotates relative to the stationary ring, and the blowing mechanism 20 blows air into the air inlet channel to form a sealing gap between the moving ring and the stationary ring. At the same time, the gas can also enter the processing chamber 111 through the air inlet channel to prevent the material in the processing chamber 111 from entering the air inlet channel. In this way, the moving ring can be prevented from contacting with the stationary ring while sealing the processing chamber 111, thereby avoiding wear between the moving ring and the stationary ring, ensuring the sealing effect of long-term operation, and improving the reliability of the homogenizing pump.

[0033] It should be explained that the gas blown out by the blowing mechanism 20 is preferably nitrogen, so as to avoid the nitrogen from reacting with the material in the processing chamber 111 or to avoid introducing new impurities into the material.

[0034] In one embodiment, the housing 11 is further provided with an inlet 112 and an outlet 113 connected to the processing chamber 111, and the material enters the processing chamber 111 through the inlet 112, and is discharged through the outlet 113 after being homogenized. Furthermore, the housing 11 is further provided with a through hole connected to the processing chamber 111, and the rotating shaft 12 enters the processing chamber 111 through the through hole.

[0035] In one embodiment, the homogenizing pump further includes a stator 14 and a rotor 15, wherein the stator 14 is disposed on the inner wall of the processing chamber 111, and the rotor 15 is disposed on the portion of the rotating shaft 12 extending into the processing chamber 111, and a homogenizing channel is formed between the stator 14 and the rotor 15. The material flows in the homogenizing channel, and the rotor 15 can break up the large particles in the material during the rotation of the rotating shaft 12, thereby achieving homogenization of the material. Of course, the gap between the stator 14 and the rotor 15 can be adjusted according to the different solid material particles, that is, the size of the homogenizing channel can be adjusted to break up the large particles while ensuring that the solid material particles that meet the requirements can pass through.

[0036] Furthermore, the stator 14 and the rotor 15 form a homogenizing structure that separates the processing chamber 111, and the homogenizing channel can connect the spaces on both sides of the homogenizing structure, thereby ensuring that the material is homogenized through the homogenizing channel during the material transportation process. At the same time, the inlet 112 and the outlet 113 are respectively connected to the spaces on both sides of the homogenizing structure. After the material enters the processing chamber 111 through the inlet 112, it is homogenized through the homogenizing channel and then discharged through the outlet 113.

[0037] In one embodiment, the homogenizing pump includes a plurality of stators 14 and a plurality of rotors 15, and the plurality of stators 14 and the plurality of rotors 15 correspond one to one to form a plurality of homogenizing structures, and the plurality of homogenizing structures are arranged at intervals along the axial direction of the rotating shaft 12 to further improve the homogenizing effect.

[0038] Specific to Figure 1In the embodiment shown, three homogenizing structures are provided in the processing chamber 111, and the three homogenizing structures divide the processing chamber 111 into four spaces. The inlet 112 and the outlet 113 are respectively connected to the two spaces at the two ends, and the through hole is also connected to the space at one end. The three homogenizing structures can perform three-level homogenization processing, further improving the homogenization effect. Of course, in other embodiments, other numbers of homogenizing structures can also be provided, which is not limited here.

[0039] In one embodiment, the homogenizing pump further includes an elastic member, which is connected between the sealing member 13 and the static ring, and is used to provide a force to make the static ring close to the dynamic ring, thereby ensuring that a sealing gap is formed between the static ring and the dynamic ring, while avoiding an excessive gap between the static ring and the dynamic ring, thereby ensuring a sealing effect. It is understandable that when the blowing mechanism 20 is not blowing, the dynamic ring can contact the static ring and separate the air inlet channel and the exhaust channel; the blowing mechanism 20 blows air toward the air inlet channel, and the static ring overcomes the force of the elastic member and moves away from the dynamic ring, thereby forming a sealing gap between the static ring and the dynamic ring that is connected to the air inlet channel and the exhaust channel.

[0040] Optionally, the elastic member is a spring.

[0041] In one embodiment, the blowing mechanism 20 includes an air source and an air blowing pipeline 21, and the air source is connected to the sealing member 13 via the air blowing pipeline 21. Preferably, the air source is used to provide nitrogen.

[0042] In one embodiment, the blowing mechanism 20 further includes a filter 22, which is disposed in the blowing pipe 21 and is used to filter the gas to prevent the gas from carrying impurities into the processing chamber 111. It is understandable that the air inlet channel is connected to the processing chamber 111, and the blown gas can also enter the processing chamber 111 through the air inlet channel to prevent the material in the processing chamber 111 from flowing out. Therefore, the gas is filtered by the filter 22 to prevent the gas from carrying impurities, thereby preventing the impurities from being brought into the material in the processing chamber 111.

[0043] In one embodiment, the blowing mechanism 20 further includes a pressure reducing valve 23 and a pressure detector 24. The pressure reducing valve 23 is disposed in the blowing pipe 21 and is located on the downstream side of the filter 22. The pressure reducing valve 23 is used to adjust the pressure of the gas delivered to the air inlet channel so that the pressure of the output gas reaches the target pressure. The pressure detector 24 is disposed in the blowing pipe 21 and is located between the pressure reducing valve 23 and the sealing member 13, and is used to detect the gas pressure in the blowing pipe 21. The pressure reducing valve 23 can adjust the pressure in the blowing pipe 21 according to the detection result of the pressure detector 24.

[0044] In one embodiment, the blowing mechanism 20 further includes a flow meter 25, which is disposed in the blowing pipeline 21 and located at the downstream side of the pressure reducing valve 23, and is used to detect the flow in the blowing pipeline 21. When the flow meter 25 detects that the flow is too large, it means that the seal between the dynamic ring and the static ring has failed, and it is necessary to stop the machine for inspection.

[0045] It should be explained that most of the gas input into the air inlet channel by the blowing mechanism 20 is discharged through the sealing gap and the exhaust channel, and the remaining part enters the processing chamber 111 through the air inlet channel. Under normal circumstances, the flow rate is usually relatively stable. If the seal fails and the gas leakage increases, the flow rate will increase.

[0046] In one embodiment, the homogenizing pump further comprises a driving member 16, which is connected to one end of the rotating shaft 12 away from the housing 11, and is used to drive the rotating shaft 12 to rotate. Preferably, the driving member 16 is a motor.

[0047] To sum up, it should be noted that before starting the motor to drive the rotating shaft 12 to rotate, it is necessary to start the blowing mechanism 20 first, and the blowing mechanism 20 blows air into the air inlet channel to separate the static ring and the dynamic ring, and then start the motor to input the material into the processing chamber 111 through the inlet 112.

[0048] The homogenizing pump provided in this application has at least the following advantages:

[0049] The blowing mechanism 20 blows air toward the air inlet passage to push the stationary ring away from the dynamic ring to avoid contact between the stationary ring and the dynamic ring, and at the same time, the gas can enter the processing chamber 111 to prevent the material in the processing chamber 111 from entering the air inlet passage. In this way, the wear between the dynamic ring and the stationary ring can be avoided while ensuring the sealing of the processing chamber 111, thereby ensuring the sealing effect.

[0050] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A homogenizing pump, characterized in that: include: A housing having a processing chamber; A rotating shaft, one end of which passes through the shell and extends into the processing chamber; A dynamic ring, sealingly connected to the rotating shaft; A sealing member, sealingly connected to the housing, wherein the sealing member, the housing and the dynamic ring together form an air inlet passage communicating with the processing chamber, and the sealing member and the dynamic ring together form an exhaust passage; A stationary ring connected to the sealing member, and capable of approaching and moving away from the dynamic ring along the axial direction of the rotating shaft; The blowing mechanism is connected to the sealing member and can blow air into the air inlet passage to push the stationary ring away from the dynamic ring and form a sealing gap between the stationary ring and the dynamic ring, wherein the sealing gap is connected to the air inlet passage and the exhaust passage.

2. The homogenizing pump according to claim 1, characterized in that: It also includes an elastic member, which is connected between the sealing member and the static ring and is used to provide a force to make the static ring close to the dynamic ring.

3. The homogenizing pump according to claim 1, characterized in that: The air blowing mechanism comprises an air source and an air blowing pipeline, and the air source is connected to the sealing member through the air blowing pipeline.

4. The homogenizing pump according to claim 3, characterized in that: The air blowing mechanism further comprises a pressure reducing valve and a pressure detector. The pressure reducing valve and the pressure detector are both arranged in the air blowing pipeline, and the pressure detector is arranged between the pressure reducing valve and the sealing member.

5. The homogenizing pump according to claim 3, characterized in that: The air blowing mechanism further comprises a flow meter, and the flow meter is arranged in the air blowing pipeline.

6. The homogenizing pump according to claim 3, characterized in that: The air blowing mechanism further comprises a filter, and the filter is arranged in the air blowing pipeline.

7. The homogenizing pump according to any one of claims 1 to 6, characterized in that: It also includes a stator and a rotor, wherein the stator is arranged on the inner wall of the processing chamber, and the rotor is arranged at the part of the rotating shaft extending into the processing chamber, a homogenizing channel is formed between the stator and the rotor, and the stator and the rotor constitute a homogenizing structure that separates the processing chamber, and the homogenizing channel can connect the spaces on both sides of the homogenizing structure.

8. The homogenizing pump according to claim 7, characterized in that: The homogenizing pump comprises a plurality of the homogenizing structures, and the plurality of the homogenizing structures are arranged at intervals along the axial direction of the rotating shaft.

9. The homogenizing pump according to claim 7, characterized in that: The shell is further provided with an inlet and an outlet communicated with the processing chamber, and the inlet and the outlet are respectively communicated with the spaces on both sides of the homogenizing structure.

10. The homogenizing pump according to any one of claims 1 to 6, characterized in that: It also includes a driving member, which is connected to one end of the rotating shaft away from the shell.

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