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CN-121976934-A - Diaphragm metering pump, heat preservation mechanism and working method

CN121976934ACN 121976934 ACN121976934 ACN 121976934ACN-121976934-A

Abstract

The invention belongs to the technical field of metering pumps, and particularly relates to a diaphragm metering pump, a heat preservation mechanism and a working method, wherein the device comprises a pump body, a liquid circulation cavity is arranged on the outer wall of the pump body; the liquid circulation cavity is characterized in that a liquid discharge channel and a liquid inlet channel are respectively arranged at the top end and the bottom end of the liquid circulation cavity, a driving mechanism is arranged in the liquid circulation cavity, a diaphragm in the driving mechanism is suitable for sucking liquid into the liquid circulation cavity through the liquid inlet channel when the diaphragm is contracted and discharging the liquid through the liquid discharge channel when the diaphragm is expanded, and a heat preservation mechanism is arranged on the inner wall of the liquid discharge channel, wherein a circulation plate in the heat preservation mechanism is suitable for rotating when the diaphragm expands to push the liquid to flow and discharge the liquid discharge channel so as to generate shearing force on the circulated liquid.

Inventors

  • SUN YAN
  • ZHANG YIMING
  • YANG YIHUI
  • WANG HAIXIAN

Assignees

  • 苏州斯宾耐特化纤科技有限公司

Dates

Publication Date
20260505
Application Date
20260331

Claims (10)

  1. 1. A diaphragm metering pump, comprising: A pump body (1) with a liquid circulation chamber (10) arranged on the outer wall; The top end and the bottom end of the liquid circulation cavity (10) are respectively provided with a liquid discharge channel (12) and a liquid inlet channel (11); A driving mechanism (3) arranged in the liquid circulation cavity (10), wherein The diaphragm (34) in the drive mechanism (3) being adapted to draw liquid into the liquid flow-through chamber (10) through the liquid inlet channel (11) when contracted and the diaphragm (34) being adapted to expel liquid through the liquid outlet channel (12) when expanded, and A heat preservation mechanism (2) arranged on the inner wall of the liquid discharge channel (12), wherein The flow-through plate (21) in the insulating mechanism (2) is adapted to rotate to create a shear force on the flowing liquid as the diaphragm (34) expands pushing the liquid flow out of the drain channel (12).
  2. 2. The diaphragm metering pump of claim 1, wherein, The heat preservation mechanism (2) comprises: a shielding plate (23) connected to the inner wall of the liquid discharge channel (12) through a short shaft, wherein a gap is arranged between the lower end surface of the shielding plate (23) and the upper end surface of the flow-through plate (21); A plurality of spiral flow channels (210) are circumferentially arranged in the axial direction of the flow plate (21) in the flow plate (21), and A pair of reset components (22) which are axisymmetrically arranged on the outer wall of the circulation plate (21), wherein When the diaphragm (34) expands to push the liquid to flow out of the liquid discharge channel (12), the liquid passes through the spiral flow channel (210) and drives the circulating plate (21) to rotate so as to generate shearing force on the circulating liquid; When the diaphragm (34) is contracted, each reset assembly (22) pushes the circulation plate (21) to rotate and reset.
  3. 3. The diaphragm metering pump of claim 2, wherein, Each reset assembly (22) includes: a limiting block (220) arranged on the inner wall of the liquid discharge channel (12); a driving block (221) arranged on the outer wall of the flow-through plate (21), and an arc-shaped rod (222) arranged on the end surface of the driving block (221) facing the corresponding limiting block (22), and The outer wall of each arc-shaped rod (222) is sleeved with a return spring, wherein When the diaphragm (34) expands, the flow-through plate (21) rotates, driving the corresponding driving block (221) to rotate close to the corresponding limiting block (220) and compressing the corresponding return spring, and When the diaphragm (34) is contracted, each return spring rebound pushes the corresponding driving block (221) to return.
  4. 4. The diaphragm metering pump of claim 1, wherein, The drive mechanism (3) includes: a driving motor (30) arranged on the outer wall of the pump body (1), wherein the output end of the driving motor (30) is connected with a rotating shaft (300), and the driving motor is provided with a driving motor The rotating shaft (300) penetrates through the outer wall of the pump body (1), an eccentric wheel (31) is arranged on the outer wall of one end of the rotating shaft (300) positioned in the pump body (1), and A push rod (32) horizontally arranged in the pump body (1) and slidingly connected with the inner wall of the pump body (1), wherein The driving motor (30) is suitable for driving the rotating shaft (300) and the eccentric wheel (31) to rotate when being started, and then the push rod (32) is pushed to move towards the liquid circulation cavity (10) through the eccentric wheel (31).
  5. 5. The diaphragm metering pump of claim 4, wherein, A diaphragm (34) is arranged in the liquid circulation cavity (10); a driven rod (33) is horizontally arranged on the end face of the diaphragm (34) facing the push rod (32), and the driven rod (33) is connected with the push rod (32); A fixing piece (35) is arranged on the inner wall of the liquid circulation cavity (10), and the driven rod (33) penetrates through the fixing piece (35) and is in sliding connection with the fixing piece (35), wherein The push rod (32) is adapted to push the driven rod (33) to press the diaphragm (34) when moving towards the liquid circulation cavity (10) so as to expand the diaphragm (34) and further drain the liquid from the liquid drain channel (12).
  6. 6. The diaphragm metering pump of claim 5, wherein, A driving spring (36) is arranged on the outer wall of the fixing piece (35), and two ends of the driving spring (36) are respectively connected with the fixing piece (35) and the driven rod (33), wherein After the eccentric wheel (31) rotates to be separated from contact with the push rod (32), the driving spring (36) resets and pulls the driven rod (33) and the push rod (32) to reset, so that the diaphragm (34) is contracted.
  7. 7. The diaphragm metering pump of claim 1, wherein, The liquid discharge channel (12) and the liquid inlet channel (11) are internally provided with unidirectional circulation mechanisms (4), and each unidirectional circulation mechanism (4) comprises: a limit table (40), a plugging ball (41) is arranged on the upper end surface of the limit table (40), and And the limiting piece (42) is arranged above the plugging ball (41).
  8. 8. A thermal insulation mechanism for a diaphragm metering pump according to any one of claims 1 to 7, comprising: A flow plate (21) provided inside the liquid discharge channel (12); The shielding plate (23) is connected to the inner wall of the liquid discharge channel (12) through a short shaft, and a gap is arranged between the lower end surface of the shielding plate (23) and the upper end surface of the circulating plate (21); A plurality of spiral flow channels (210) are circumferentially arranged in the axial direction of the flow plate (21) in the flow plate (21), and A pair of reset components (22) which are axisymmetrically arranged on the outer wall of the circulation plate (21), wherein When the diaphragm (34) expands to push the liquid to flow out of the liquid discharge channel (12), the liquid passes through the spiral flow channel (210) and drives the circulation plate (21) to rotate; when the diaphragm (34) is contracted, each reset assembly (22) pushes the circulation plate (21) to rotate and reset.
  9. 9. The heat retaining mechanism for a diaphragm metering pump of claim 8, Each reset assembly (22) includes: The limiting block (220) is arranged on the inner wall of the liquid discharge channel (12); a driving block (221) arranged on the outer wall of the flow-through plate (21), and an arc-shaped rod (222) arranged on the end surface of the driving block (221) facing the corresponding limiting block (22), and The outer wall of each arc-shaped rod (222) is sleeved with a return spring, wherein When the diaphragm (34) expands, the flow-through plate (21) rotates, driving the corresponding driving block (221) to rotate close to the corresponding limiting block (220) and compressing the corresponding return spring, and When the diaphragm (34) is contracted, each return spring rebound pushes the corresponding driving block (221) to return.
  10. 10. A method of operating a diaphragm metering pump according to any of claims 1 to 7, wherein the method of operation comprises: By starting the driving motor (30), the output end of the driving motor drives the rotating shaft (300) and the eccentric wheel (31) to rotate, and when the eccentric wheel (31) rotates to be in contact with the push rod (32), the push rod (32) is pushed to move; The driven rod (33) is driven to move by pushing the push rod (32) to push the diaphragm (34) to expand and squeeze the space in the liquid circulation cavity (10), so that liquid is discharged through the liquid discharge channel (12); The liquid flows through the spiral flow channel (210) in the flow plate (21) to drive the flow plate (21) to rotate, so that the liquid is stirred to generate shearing force.

Description

Diaphragm metering pump, heat preservation mechanism and working method Technical Field The invention belongs to the technical field of metering pumps, and particularly relates to a diaphragm metering pump, a heat preservation mechanism and a working method. Background The diaphragm metering pump is a fluid delivery device, and drives a diaphragm to deform reciprocally through a driving component, so that periodical volume changes are formed in a pump cavity, and medium suction and discharge are realized. However, when some temperature sensitive liquid such as spinning liquid is pumped by the diaphragm metering pump, certain technical limitations exist, specifically, in the draining stage of the pump, during the process of flowing out of the liquid from the pump cavity through the drain valve, a flash evaporation effect occurs due to sudden drop of the liquid pressure, and the liquid exchanges heat with the pump body and pipeline components with relatively low temperature, so that the temperature of the pumped liquid is reduced in a non-negligible way, when the pumped medium is the spinning liquid, the viscosity of the pumped medium is increased beyond the allowable process range due to the reduction of the temperature, and further pressure fluctuation and uneven filament outlet are generated at micropores of the spinneret plate, so that the production stability is seriously affected. The prior art mostly adopts an external heat tracing mode, and has the problems of lagging thermal response, limited heating effect on a fluid core and the like. Therefore, a diaphragm metering pump, a heat preservation mechanism and a working method are designed to solve the technical problem that the thermal response is lagged in the prior art by adopting an external heat tracing mode. It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and therefore the above description is not to be construed as constituting prior art information. Disclosure of Invention The embodiment of the disclosure at least provides a diaphragm metering pump, a heat preservation mechanism and a working method. In a first aspect, embodiments of the present disclosure provide a diaphragm metering pump comprising: the pump body is provided with a liquid circulation cavity on the outer wall; The top end and the bottom end of the liquid circulation cavity are respectively provided with a liquid discharge channel and a liquid inlet channel; A driving mechanism arranged in the liquid circulation cavity, wherein The diaphragm in the drive mechanism being adapted to draw liquid into the liquid flow chamber through the liquid inlet passage when contracted and the diaphragm being adapted to expel liquid through the liquid outlet passage when expanded, and The heat preservation mechanism is arranged on the inner wall of the liquid discharge channel, wherein The flow-through plate in the insulating mechanism is adapted to rotate to create a shear force on the flowing liquid as the diaphragm expands pushing the liquid flow out of the drain channel. In an alternative embodiment, the thermal insulation mechanism includes: the shielding plate is connected to the inner wall of the liquid discharge channel through a short shaft, and a gap is arranged between the lower end face of the shielding plate and the upper end face of the circulating plate; a plurality of spiral flow channels are circumferentially arranged in the flow plate along the axial direction of the flow plate, and A pair of reset components which are axisymmetrically arranged on the outer wall of the flow plate, wherein When the diaphragm expands to push the liquid to flow and discharge the liquid out of the liquid discharge channel, the liquid passes through the spiral flow channel and drives the circulating plate to rotate so as to generate shearing force on the circulating liquid; when the diaphragm is contracted, each reset component pushes the circulation plate to rotate and reset. In an alternative embodiment, each of the reset assemblies includes: The limiting block is arranged on the inner wall of the liquid discharge channel; A driving block arranged on the outer wall of the circulation plate, and provided with an arc-shaped rod on the end face facing the corresponding limiting block, and A reset spring is sleeved on the outer wall of each arc-shaped rod, wherein When the diaphragm expands, the circulation plate rotates to drive the corresponding driving block to rotate close to the corresponding limiting block and compress the corresponding reset spring, and When the diaphragm is contracted, each reset spring rebounds to push the corresponding driving block to reset. In an alternative embodiment, the drive mechanism includes: The driving motor is arranged on the outer wall of the pump body, and the output end of the driving motor is connected with a rotating shaft, wherein The rotating shaft penetrat