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CN-224231540-U - Automatic negative pressure screen analysis instrument

CN224231540UCN 224231540 UCN224231540 UCN 224231540UCN-224231540-U

Abstract

The utility model discloses an automatic negative pressure screen analyzer, which comprises a screen base, a lifting platform and an air nozzle, wherein a bracket is used for hooping the screen during use, a material to be detected is filled in the screen, the screen is placed in a placement groove of the screen base, the air nozzle sprays gas to enable the material in the screen to be in a flowing state, an interface is in butt joint with an external negative pressure source to pump away fine particles with particle diameters smaller than meshes of the screen, the bracket is contacted with a weighing mechanism after screening is completed by the downward movement of the lifting platform, the lifting platform is continuously moved downward to separate the screen base from the screen, the weighing mechanism weighs the screen and the bracket, the weight of the screen and the bracket is subtracted, and the weight of the residual material in the screen is obtained, so that the weighing is more accurate and the efficiency is higher.

Inventors

  • PU JUN
  • LIU LEI

Assignees

  • 余姚市视迈电子技术有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (6)

  1. 1. The utility model provides an automatic negative pressure sieve analysis instrument, includes sieve base (2), lift platform (1), air nozzle (3), the removal end department of lift platform (1) sets up sieve base (2), sieve base (2) top surface department sets up and supplies the mounting groove that the sieve was put into and sets up air nozzle (3) in the mounting groove, mounting groove cell wall department sets up with external intercommunication, is used for interface (6) of sucking, its characterized in that still includes bracket (4) and weighing machine construct (5) that are used for supporting the sieve, the both sides department of sieve base (2) sets up weighing machine construct (5), weighing machine constructs (5) are in bracket (4) along with the route of lift platform downtake in order to carry out weighing of weight.
  2. 2. An automatic negative pressure screen analyser according to claim 1, wherein the weighing mechanism (5) is a load cell type.
  3. 3. An automatic negative pressure screen analysis meter according to claim 2, characterized in that the weighing mechanism (5) comprises a placement seat (52) and a weighing sensor (51), wherein the weighing sensor (51) is arranged at the placement seat (52).
  4. 4. An automatic negative pressure screen analyser according to claim 1, further comprising a screen (8), the screen (8) being provided with brackets (4) at both sides.
  5. 5. An automatic negative pressure screen analyzer according to claim 1, characterized in that the interface (6) is provided with a measuring port (7) for measuring negative pressure.
  6. 6. An automatic negative pressure screen analyzer according to claim 1, characterized in that the air outlet of the air nozzle (3) is arranged upwards.

Description

Automatic negative pressure screen analysis instrument Technical Field The utility model relates to the technical field of detection devices, in particular to an automatic negative pressure screening analyzer. Background In the field of construction, cement generally needs to be subjected to cement fineness test, for example, specific detection details are specified in a GBT1345-2005 cement fineness test method implemented in 2005-08-01, wherein weighing detection is involved, for example, a sieve carrying materials is placed at a sieve base, corresponding materials in the sieve are extracted through negative pressure suction, then the residual materials in the sieve are carefully transferred to other carriers, the carriers are weighed, loss inevitably occurs in the process of transferring the materials, and the defects of low measurement precision, low measurement efficiency and the like exist, and the defects need to be improved. Disclosure of utility model In order to solve at least one technical defect, the utility model provides the following technical scheme: The application discloses an automatic negative pressure screen analyzer, which comprises a screen base, a lifting platform and air nozzles, wherein the screen base is arranged at the moving end of the lifting platform, a placing groove for placing a screen is arranged at the top surface of the screen base, the air nozzles are arranged in the placing groove, an interface which is communicated with the outside and used for sucking is arranged at the groove wall of the placing groove, a bracket and a weighing mechanism are arranged at the two sides of the screen base, and the weighing mechanism is positioned on a path of the bracket moving downwards along with the lifting platform so as to weigh the weight. When the sieve is used, the bracket is hooped by the sieve, the sieve is filled with materials to be detected, the sieve is placed in the placement groove of the sieve base, the air nozzle sprays air to enable the materials in the sieve to be in a flowing state, the interface is in butt joint with an external negative pressure source to pump away fine particles with particle sizes smaller than meshes of the sieve, the bracket is contacted with the weighing mechanism after the sieving is completed by moving down the lifting platform, the lifting platform continues to move down to enable the sieve base to be separated from the sieve, the weighing mechanism weighs the sieve and the bracket, the weight of the sieve and the bracket is subtracted, namely the weight of the residual materials in the sieve, and the weighing is more accurate and the efficiency is higher. Further, the weighing mechanism is a weighing sensor type, and has the advantages of accurate weighing, easiness in installation and the like. Further, the weighing mechanism comprises a placement seat and a weighing sensor, the weighing sensor is arranged at the placement seat, and the placement seat is added to facilitate butt joint of the weighing sensor. For the bracket, such as a common frame or a slot, the sieve is placed in the frame opening or the slot cavity, or a bracket formed by multiple split parts can be adopted, such as two plates respectively fixed at two sides of the sieve, the two plates form the bracket, and the specific configuration of the bracket can be freely selected according to requirements. Further, the novel sieve comprises a sieve, brackets are arranged at two sides of the sieve, and the specific configuration of the brackets is like a common flat plate or L-shaped configuration and the like, and is selected according to requirements. Further, a measuring port for measuring negative pressure is arranged on the interface, so that the suction pressure can be conveniently measured. Further, the air outlet of the air nozzle is upward, so that the material in the sieve can be better blown. Compared with the prior art, the utility model has the beneficial effects that: 1. The utility model improves the structure of the negative pressure screening instrument, and after screening of the materials in the screen is completed, the materials are directly weighed by the weighing mechanism, so that the weight of the residual materials in the screen is obtained, and the detection efficiency and the detection precision are improved. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of the structure of the automatic negative pressure screen analyzer of example 1; FIG. 2 is a schematic diagram of the structure of the automatic negative pressure screen an