Dividing machine
Technical Field
The invention relates to the technical field of equipment for preparing samples by dividing granular or powdery materials such as coal, fine iron powder and the like, in particular to a dividing machine.
Background
Fractionation is the process of taking a small representative sample from a large number of samples in proportion.
The division method is divided into a mechanical method and a manual method, and the manual method is generally adopted only when the material has high moisture and is not suitable for the application of the mechanical method.
Taking coal, fine iron powder and other granular or powdery materials as examples, a mechanical method is mainly adopted. The existing mechanical division types can be divided into structures such as a rotary disc type, a rotary cone type, a rotary inclined tube type, a rotary groove type, a cutting groove type and a transverse belt scraping type, and the division types can be summarized into two main types in principle: one is a falling flow type division, namely the material flow is cut to be divided in the falling flow process, but the falling flow type division has uneven material flow, and the division ratio cannot be adjusted; the other type is a cross-belt scraping type division, namely the material is divided across a belt cutting material flow in the belt conveying process, but the material flow is also uneven, the division ratio cannot be adjusted, the belt is easy to scratch, and the service life of the device is short.
Therefore, how to improve the material flow uniformity and facilitate the adjustment of the division ratio is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a splitter to improve the material flow uniformity and facilitate the adjustment of the splitting ratio.
In order to achieve the purpose, the invention provides the following technical scheme:
a splitter, comprising: the device comprises a conveyor, a material flow control plate, a sample reserving door opening and closing device and a weighing support device;
the conveyor comprises a groove body, a feed hopper arranged at the top of the groove body, a conveying mechanism arranged in the groove body, a scraper driven by the conveying mechanism and a sample reserving opening arranged on a groove bottom plate of the groove body;
the material flow control plate is arranged in the groove body and positioned between the sample reserving opening and the feed hopper, the width of the material flow control plate is the same as that of a groove bottom plate of the groove body, and a gap for the scraping plate to drive the division material to pass through is formed between the bottom end of the material flow control plate and the groove bottom plate;
the sample reserving door opening and closing device is provided with a sample reserving door which is arranged on the sample reserving opening in an opening and closing mode.
Preferably, the splitter further includes:
the waste hopper is arranged on the bottom plate of the tank and is arranged on one side, close to the output end of the conveyor, of the bottom plate of the tank;
and the cleaning device is arranged corresponding to the waste hopper and used for cleaning the residual division materials on the conveying mechanism.
Preferably, in the above division machine, the conveying mechanism includes a driving wheel disposed at one end of the tank body and a driven wheel disposed at the other end of the tank body, a chain is disposed between the driving wheel and the driven wheel, and the scraper is disposed outside the chain.
Preferably, in the above splitter, the material flow control plate is adjustably disposed inside the tank.
Preferably, in the above splitter, the material flow control plate is disposed obliquely or vertically with respect to the tank bottom plate of the tank.
Preferably, in the dividing machine, the sample retention door opening and closing device further includes a driving device fixed on the tank body, a driving arm with one end hinged to a driving end of the driving device, and a bearing for rotational support;
one end of the sample reserving door is provided with a rotating shaft erected in the bearing, and the rotating shaft is fixedly connected with the other end of the driving arm.
Preferably, among the above-mentioned division machine, still include with set up in the sample mouth that stays of cell body bottom corresponds the sample elephant trunk that sets up, stay the sample door set up in stay in the sample elephant trunk, be provided with the confession on the lateral wall of staying the sample elephant trunk the opening that the axis of rotation passed.
Preferably, in the above division machine, the number of the weighing support devices is four and is uniformly arranged at four corners of the tank body.
Preferably, in the above splitter, the weighing support device includes:
a base;
the pressure type weighing sensor is arranged on the base;
the screw is arranged on the pressure type weighing sensor;
the supporting seat is fixedly connected with the groove body and is provided with an internal thread matched with the screw rod;
and the locking nut is arranged on the screw rod.
Preferably, in the above-described splitter, the width of the sample retention port is the same as the width of the groove bottom plate of the groove body.
According to the technical scheme, in the division operation, the division machine provided by the invention is placed into the groove body through the feed hopper, and the division material in the groove body moves along the groove bottom plate of the groove body under the driving of the scraper plate; the quality of the division materials driven by the scraper is controlled by the material flow control plate, namely, in the process that the conveying mechanism drives the scraper to move, the division materials are driven by the scraper to pass through the material flow control plate and the groove bottom plate of the groove body and are uniformly distributed under the blocking of the material flow control plate, so that excessive division materials are prevented from passing through gaps; the division material moves to a sample reserving opening on the bottom plate of the tank, and the division material is weighed through the weighing supporting device to control the division ratio of the opening and closing time of the sample reserving door. The division machine provided by the embodiment of the invention improves the uniformity of material flow and is convenient for adjusting the division ratio.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a splitter provided in an embodiment of the present invention;
fig. 2 is a schematic sectional view taken along the plane a-a in fig. 1.
Wherein,
the device comprises a conveyor-1, a driving wheel-11, a chain-12, a scraper-13, a feed hopper-14, a driven wheel-15, a groove-16, a waste hopper-17, a material flow control plate-2, a sample reserving door opening and closing device-3, a sample reserving door-31, a sample reserving chute-32, a bearing-33, a driving arm-34, a driving device-35, a weighing supporting device-4, a base-41, a pressure type weighing sensor-42, a screw rod-43, a supporting seat-44, a locking nut-45 and a cleaning device-5.
Detailed Description
The invention discloses a division machine, which is used for improving the material flow uniformity and facilitating the adjustment of the division ratio.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a splitter according to an embodiment of the present invention; fig. 2 is a schematic sectional view taken along the plane a-a in fig. 1.
As shown in fig. 1 and fig. 2, the splitter provided in the embodiment of the present invention includes: the device comprises a conveyor 1, a material flow control plate 2, a sample reserving door opening and closing device 3 and a weighing support device 4; the conveyor 1 comprises a trough body 16, a feed hopper 14 arranged at the top of the trough body 16, a conveying mechanism arranged inside the trough body 16, a scraper 13 driven by the conveying mechanism and a sample reserving opening arranged on a trough bottom plate of the trough body 16; the material flow control plate 2 is arranged in the groove body 16 and is positioned between the sample reserving opening and the feed hopper 14, the width of the material flow control plate 2 is the same as that of the groove bottom plate of the groove body 16, and a gap for the scraping plate 13 to drive the division material to pass through is formed between the bottom end of the material flow control plate 2 and the groove bottom plate; the sample retention door opening/closing device 3 has a sample retention door 31 that opens and closes the sample retention opening.
In the division operation, the division machine provided by the embodiment of the invention is characterized in that a feed hopper 14 is placed into a groove body 16, and division materials in the groove body 16 move along a groove bottom plate of the groove body 16 under the driving of a scraper 13; the quality of the division materials driven by the scraper 13 is controlled by the material flow control plate 2, namely in the process that the conveying mechanism drives the scraper 13 to move, the scraper 13 drives the division materials to pass through the material flow control plate 2 and the bottom plate of the groove body 16 and be uniformly distributed under the blocking of the material flow control plate 2, so that excessive division materials are prevented from passing through gaps; the division material moves to a sample reserving opening on the bottom plate of the tank, and the division material is weighed through the weighing support device 4 to control the division ratio of the opening and closing time of the sample reserving door 31. The division machine provided by the embodiment of the invention improves the uniformity of material flow and is convenient for adjusting the division ratio.
Wherein, through the total mass of weighing division material of strutting arrangement 4, according to the total time of the division material of this weight by staying kind mouthful output, under the even condition of material stream, can calculate the quality of the division material by staying kind mouthful output in the unit interval, and then through the open and close time control division ratio of control sample door 31. The condensed material is coal, iron concentrate powder and other granular or powdery material.
In order to facilitate the recovery of waste materials after division and sampling, the division machine provided by the embodiment of the invention further comprises a waste hopper 17 arranged on the trough bottom plate, wherein the waste hopper 17 is arranged on one side of the trough bottom plate close to the output end of the conveyor 1; and the cleaning device 5 is arranged corresponding to the waste hopper 17 and used for cleaning residual shrinkage and separation materials on the conveying mechanism. As shown in fig. 1, the waste material on the bottom plate of the trough moves towards the output end of the conveyor 1 under the driving of the scraper 13 and flows into the waste hopper 17, and the residual reduced material on the conveying mechanism also falls into the waste hopper 17 under the action of the cleaning device 5, so that the recovery of the waste material after the reduction sampling is completed.
Preferably, in the dividing machine provided by the embodiment of the present invention, the transmission mechanism includes a driving wheel 11 disposed at one end of the slot 16 and a driven wheel 15 disposed at the other end of the slot 16, a chain 12 is disposed between the driving wheel 11 and the driven wheel 15, and the scraper 13 is disposed outside the chain 12. The chain 12 is sleeved outside the driving wheel 11 and the driven wheel 15, and the scraper 13 is disposed on a side of the chain 12 away from the driving wheel 11 and the driven wheel 15.
The chain 12 can be replaced by a transmission belt, driving wheels which synchronously rotate can be arranged at two ends of the groove body 16, the specific structure is not limited, and the scraping plate 13 is ensured to drive the division material to move along the groove bottom plate of the groove body 16.
The material flow control plate 2 is adjustably arranged inside the groove body 16, so that the size of a gap between the bottom end of the material flow control plate 2 and the bottom plate of the groove is adjusted, and the material flow height is conveniently adjusted. Of course, the material flow control plate 2 may be fixedly disposed inside the tank 16, i.e., the material flow height is constant.
Further, the material flow control plate 2 is disposed obliquely with respect to the tank bottom plate of the tank body 16. It can be understood that the inclination direction of the material flow control plate 2 is inclined towards the bottom plate of the tank along the transmission direction of the division materials, so that the division materials are further conveniently and uniformly distributed. The material flow control plate 2 may also be arranged vertically with respect to the tank floor of the tank 16, which is not described in detail here and is within the scope of protection.
As shown in fig. 2, in order to facilitate the opening and closing adjustment of the sample retention door 31, the sample retention door opening and closing device 3 further includes a driving device 35 fixed on the tank body 16, a driving arm 34 with one end hinged to the driving end of the driving device 35, and a bearing 33 for rotatably supporting; one end of the sample reserving door 31 is provided with a rotating shaft erected in the bearing 33, and the rotating shaft is fixedly connected with the other end of the driving arm 34. The driving arm 34 is driven by the driving device 35 to move, and then the rotating shaft is driven to rotate, so that the opening and closing of the sample reserving door 31 relative to the sample reserving opening are controlled. That is, the opening time of the sample retention door 31 can be controlled by controlling the driving time of the driving device 35.
Preferably, the drive means 35 is a high speed electric push rod.
The sample collection machine further comprises a sample collection chute 32 arranged corresponding to the sample collection opening arranged at the bottom of the chute body 16, a sample collection door 31 is arranged in the sample collection chute 32, and an opening through which a rotating shaft passes is arranged on the side wall of the sample collection chute 32. By arranging the sample reserving chute 32, the separation material flowing out from the sample reserving opening smoothly flows out under the guidance of the sample reserving chute 32.
In order to improve the conveying stability of the weighing support devices 4 to the conveyor 1, the weighing support devices 4 are four in number and are evenly arranged at four corners of the tank body 16.
The weighing support device 4 comprises: a base 41; a pressure-type load cell 42 provided on the base 41; a screw 43 provided on the pressure-type weighing sensor 42; a support seat 44 fixedly connected with the trough body 16, wherein the support seat 44 is provided with an internal thread matched with the screw 43; and a lock nut 45 provided on the screw 43.
The position of the support seat 44 on the screw 43 is adjusted to achieve the effect of adjusting the balance of the groove body 16, and then the support seat 44 is prevented from moving by fixing through the locking nut 45. The total mass of the division material in the trough body 16 is transferred through the pressure type weighing sensor 42.
Further, in order to facilitate the division of the material to flow out from the sample reserving opening, the division of the material is prevented from remaining on the side wall of the groove body 16, and the width of the sample reserving opening is the same as the width of the groove bottom plate of the groove body 16. One section of the bottom plate of the groove bottom plate can be set to be a conical bottom plate, and the sample reserving port is arranged at the lowest point of the conical bottom plate, so that the same technical effect is achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.