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CN-224216699-U - Device for detecting sand amount through pressure feedback

CN224216699UCN 224216699 UCN224216699 UCN 224216699UCN-224216699-U

Abstract

The utility model discloses a device for detecting sand quantity through pressure feedback, which comprises a machine body and a sand hopper arranged in the machine body, wherein a feed hopper is arranged on the upper side of the sand hopper so as to guide sand to enter the sand hopper, an outer sleeve is arranged in the sand hopper, a hydraulic motor is arranged at the head end of the outer sleeve, a connecting flexible shaft is fixedly connected to the outer wall of the lower end of the hydraulic motor, a rotating rod is arranged at the other side of the connecting flexible shaft, a pressure detector is fixedly connected to the outer wall of the rear end of the hydraulic motor so as to detect resistance when the rotating rod rotates, and impurities in sand and moist agglomerated sand are intercepted and guided through an installation guide net, so that the situation that the rotating rod is stirred to the moist sand is in judgment error when the rotating rod rotates to detect the sand quantity in the sand hopper is avoided, the pressure sensor accurately detects the sand quantity based on preset pressure, and the reliability of a detection result is greatly improved.

Inventors

  • LIU XIANGUI
  • GU LIANG

Assignees

  • 苏州小鹰铸造装备有限公司

Dates

Publication Date
20260508
Application Date
20250519

Claims (8)

  1. 1. A device for detecting sand amount through pressure feedback comprises a machine body (3) and a sand hopper (4) arranged inside the machine body (3); the upper side of the sand hopper (4) is provided with a feed hopper (1) for guiding sand into the sand hopper (4); An outer sleeve (7) is arranged in the sand hopper (4); The hydraulic device is characterized in that a hydraulic motor (9) is arranged at the head end of the outer sleeve (7), a connecting flexible shaft (11) is fixedly connected to the outer wall of the lower end of the hydraulic motor (9), a rotating rod (6) is arranged on the other side of the connecting flexible shaft (11), and a pressure detector (8) is fixedly connected to the outer wall of the rear end of the hydraulic motor (9) so as to detect resistance when the rotating rod (6) rotates; The device is characterized in that guide nets (12) are fixedly connected between the inner walls of the left end and the right end of the feed hopper (1) so as to intercept and guide moist and agglomerated sand.
  2. 2. The device for detecting the sand amount through pressure feedback according to claim 1, wherein supporting legs (13) are fixedly connected between the outer walls of the left end and the right end of the guide net (12), and fixing plates (19) are arranged on the lower sides of the supporting legs (13).
  3. 3. The device for detecting the sand amount through pressure feedback according to claim 2, wherein the outer wall of the lower end of the supporting leg (13) is fixedly connected with a connecting plate (20), and a clamping groove (15) which is downwards opened is formed in the outer wall of the lower end of the connecting plate (20).
  4. 4. A device for detecting sand amount by pressure feedback according to claim 2, wherein a plurality of springs (17) inserted upward into the inside of the clamping groove (15) are fixedly connected to the outer wall of the upper end of the fixing plate (19) to provide slight shake to the guide net (12), and a plurality of positioning blocks (16) are fixedly connected to the outer wall of the upper end of the springs (17) to limit the position of the guide net (12).
  5. 5. The device for detecting the sand amount through the pressure feedback according to claim 2, wherein a plurality of through holes (18) which are vertically communicated are formed in the outer wall of the lower end of the fixing plate (19) so as to allow part of sand to pass through, and soft cushions (14) are arranged on the circular outer walls of the support legs (13) and the connecting plate (20).
  6. 6. A device for detecting sand quantity by pressure feedback according to claim 1, characterized in that the guiding net (12) is cone-shaped.
  7. 7. The device for detecting the sand amount by pressure feedback according to claim 1, wherein a rotary joint (10) is arranged between the connecting flexible shaft (11) and the rotary rod (6).
  8. 8. The device for detecting the sand amount by pressure feedback according to claim 1, wherein a control valve (2) is arranged between the inner walls of the left end and the right end of the sand hopper (4) so as to control the sand to enter, and a shooting head (5) is arranged on the lower side of the sand hopper (4).

Description

Device for detecting sand amount through pressure feedback Technical Field The utility model belongs to the technical field related to the building industry, and particularly relates to a device for detecting sand quantity through pressure feedback. Background The hydraulic motor drives the rotating rod to stir sand, the pressure sensor is matched with the resistance during rotation, the pressure change of the sand material to the sand can be sensed in real time, and the quantity of the sand in the container is fed back in real time through the change. However, when the rotating rod is used for stirring and detecting sand, if the sand which is stirred to be moist and agglomerated is mixed, the gap between the moist and agglomerated sand and the dried sand is large, and the error of the numerical value of the pressure feedback is large. Disclosure of utility model The utility model aims to provide a device for detecting the sand amount through pressure feedback, which solves the problem that the larger error of the numerical value of the pressure feedback can be caused by larger gap between the wet agglomerated sand and the dry sand if the sand which is stirred to the wet agglomerated sand is generated in the prior art. The device for detecting the sand amount through pressure feedback comprises a machine body and a sand hopper arranged in the machine body; the upper side of the sand hopper is provided with a feed hopper for guiding sand into the sand hopper; An outer sleeve is arranged in the sand hopper; The hydraulic motor is arranged at the head end of the outer sleeve, a connecting flexible shaft is fixedly connected to the outer wall of the lower end of the hydraulic motor, a rotating rod is arranged at the other side of the connecting flexible shaft, and a pressure detector is fixedly connected to the outer wall of the rear end of the hydraulic motor so as to detect the resistance of the rotating rod during rotation; Guide nets are fixedly connected between the inner walls of the left end and the right end of the feeding hopper so as to intercept and guide moist and agglomerated sand. Preferably, the support legs are fixedly connected between the outer walls of the left end and the right end of the guide net, and the lower sides of the support legs are provided with fixing plates. Preferably, the lower extreme outer wall fixedly connected with connecting plate of stabilizer blade, the draw-in groove of downward opening has been seted up to the lower extreme outer wall inside of connecting plate. Preferably, the outer wall of the upper end of the fixing plate is fixedly connected with a plurality of springs which are inserted upwards into the clamping grooves so as to slightly shake the guide net, and the outer wall of the upper end of the plurality of springs is fixedly connected with a positioning block so as to limit the position of the guide net. Preferably, a plurality of through openings which are vertically communicated are formed in the outer wall of the lower end of the fixing plate so as to allow part of sand to pass through, and soft cushions are arranged on the supporting legs and the circular outer wall of the connecting plate. Preferably, the guide net is conical. Preferably, a rotary joint is arranged between the connecting flexible shaft and the rotary rod. Preferably, a control valve is arranged between the inner walls of the left end and the right end of the sand hopper so as to control the entering of sand, and a shooting head is arranged at the lower side of the sand hopper. Compared with the prior art, the utility model provides a device for detecting the sand amount through pressure feedback, which has the following beneficial effects: Through installing the guide net, when carrying sand through the feeder hopper toward the inside sand hopper, accessible guide net intercepts the guide with impurity in the sand and the sand of moist caking, ensures that loose dry sand gets into among the sand hopper and deposits to avoid the rotary rod to stir the condition emergence that the moist sand appears judging the mistake when rotatory sand volume that detects in the sand hopper, make pressure sensor based on the pressure of predetermineeing, sand volume model accuracy detects the sand volume, improves the reliability of testing result greatly. Drawings Fig. 1 is a schematic structural view of an apparatus for detecting sand amount by pressure feedback according to the present utility model. FIG. 2 is a schematic view of a partial structure of an outer sleeve region according to the present utility model. FIG. 3 is a schematic sectional elevation view of a partial structure of an outer sleeve region according to the present utility model. FIG. 4 is a schematic view of a partial structure of a feed hopper area according to the present utility model. Fig. 5 is a schematic view of a partial structure of the leg area of the present utility model in elevation and cross section. The device compr