Gap-adjustable profiling walnut shell breaking device

Abstract

The application discloses a gap-adjustable profiling walnut shell breaking device and relates to the field of walnut processing.The device comprises a support, a profiling shell breaking mechanism, a gap adjusting mechanism and a power transmission mechanism arranged on the support.The profiling shell breaking mechanism comprises a profiling cutter roll and a profiling pressing plate, which are used for generating shearing force and acting on the walnut shell to break the walnut shell.The gap adjusting mechanism comprises a universal screw rod, and the universal screw rod is provided with an adjusting hand wheel at the tail end, which is used for extruding the profiling pressing plate and setting a shell breaking gap.The power transmission mechanism is used for providing power for the profiling shell breaking mechanism.The application can break the classified walnut shells in a targeted manner, and the profiling cutter roll and the profiling pressing plate are used for breaking the shells, so that the device has the characteristics of simplicity and convenience, good shell and kernel separation effect, high shell breaking rate, high kernel rate and the like.

Description

Technical Field

[0001] This invention relates to the field of walnut processing technology, and in particular to a walnut shell-breaking device with adjustable gaps. Background Technology

[0002] Walnuts are rich in various nutrients, which have a positive impact on brain function and nervous system development. Therefore, walnuts have become an important part of people's daily diet, driving the continuous expansion of the walnut market. In recent years, with in-depth scientific research on walnuts, a series of equipment capable of mechanizing the entire initial processing of walnuts has been gradually developed.

[0003] The shelling process is a crucial step in walnut processing. Therefore, many researchers have conducted in-depth studies on shelling and kernel extraction techniques. Currently, walnut shelling devices typically utilize the relative rotation of rollers to achieve shell removal through compression and kneading. However, existing walnut shelling equipment generally suffers from a high breakage rate, resulting in a large number of broken kernels, or failing to remove fully cracked walnuts due to insufficient crushing force. To address these issues, a contour-following walnut shelling device with adjustable gap is proposed. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a walnut shelling device with adjustable gap that can reduce the kernel breakage rate during the walnut shelling process and improve the shelling effect.

[0005] Technical Solution: The present invention provides a contour-following walnut shell-cracking device with adjustable gap, comprising a support frame, a contour-following shell-cracking mechanism, a gap adjustment mechanism, and a power transmission mechanism; the contour-following shell-cracking mechanism includes a contour-following cutter roller and a pressure plate mechanism, used to generate shearing force and act on the walnut shell to break the shell; the gap adjustment mechanism includes a universal screw, the end of which is provided with an adjusting handwheel, the adjusting handwheel being used to rotate the universal screw to squeeze the pressure plate mechanism and set the shell-cracking gap; the power transmission mechanism is used to provide power to the contour-following shell-cracking mechanism.

[0006] Furthermore, the conformal shell-breaking mechanism also includes a limiting ring, a bushing, a fixed shaft, a bearing, and a rotating shaft; the pressure plate mechanism includes a diverting plate, a guide plate, a baffle, and a conformal pressure plate; the conformal cutter roller is connected to the rotating shaft by a key and rotates through the bearing; the limiting ring is arranged on both sides of the conformal pressure plate; the fixed shaft is located above the rear of the conformal pressure plate, and the conformal pressure plate is fixed on the shaft by the limiting ring to achieve rotation; the pressure plate mechanism and the conformal cutter roller are arranged opposite each other to form a shell-breaking channel; the diverting plate is located at the upper end of the conformal pressure plate to form a feeding channel.

[0007] Furthermore, the contouring roller is a gear-like structure with contouring grooves, and the contouring pressure plate also has contouring grooves. The contouring grooves fit the curve of the walnut shell for longitudinal shell breaking.

[0008] Furthermore, the contouring curve of the contouring groove is described by a quartic polynomial curve equation, the mathematical expression of which is as follows: Where x represents the position on the horizontal coordinate axis, and y represents the contour height on the vertical coordinate axis. The coefficients are polynomial coefficients, obtained through spline fitting or least squares method.

[0009] Preferably, the contour curve is described by a quartic polynomial curve equation, the mathematical expression of which is: The value of x ranges from [0,30]. The curve within this range precisely matches the target contour, which can effectively reduce processing errors and meet the accuracy requirements of the usage environment.

[0010] Furthermore, the guide plate is located above the contouring pressure plate and is correspondingly arranged with the flow guide plate; the baffle is arranged on both sides of the contouring pressure plate and covers the contouring cutter roller.

[0011] Furthermore, the support is provided with a discharge port located below the conformal shell-breaking mechanism. The discharge port corresponds to the position of the conformal shell-breaking mechanism. The shell kernel after shell breaking falls directly into the discharge port and flows out through the discharge port.

[0012] Furthermore, a material collection mechanism is provided on the support and located below the discharge port, and the material collection mechanism corresponds to the outlet position of the discharge port.

[0013] Furthermore, the universal screw has a base plate at its front end, the base plate is mounted on the back of the contour pressure plate, and the universal screw is fixed by a bracket with internal threads.

[0014] Furthermore, the power transmission mechanism includes a driving pulley, a driven pulley, a synchronous belt, and a drive motor. The drive motor is located on a bracket, the driving pulley is located on the power output shaft of the drive motor, and the driven pulley is located on a rotating shaft. The driving pulley and the driven pulley are connected by a synchronous belt. Driven by the drive motor, the power is transmitted to the transmission shaft, which drives the contouring cutter roller to rotate, thereby realizing the relative movement between the contouring cutter roller and the pressure plate mechanism.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages: (1) The present invention provides power through a power conveying mechanism, so that the shaped shell-breaking cutter roller and the shaped pressure plate are squeezed to specifically break the shell of the graded walnuts. By using the shaped cutter roller and the pressure plate to break the shell, the cutter roller and the walnut can fit better, the force is more uniform, and it has the characteristics of being simple and convenient, having a good shell-kernel separation effect, a high shell-breaking rate, and a high first-pass kernel rate; (2) In view of the current shell-breaking equipment being difficult to adapt to the simultaneous shell-breaking of walnuts of different specifications, and the current grading equipment having low applicability to different varieties of walnuts, the present invention combines the shell-breaking component with the gap adjustment component. After the walnuts are graded, they enter the shell-breaking device through a conveyor belt. The gap is adjusted by the universal screw, which can adapt to the shell-breaking of walnuts of various sizes and is more targeted; (3) The present invention adjusts the angle of the shaped pressure plate by the universal screw. The spherical screw head is installed on the universal base, which makes the squeezing force on the shaped pressure plate more uniform, which can increase the service life of the device and improve the gap accuracy and the stability of the device during shell breaking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the contour-following shell-breaking mechanism in this invention;

[0018] Figure 3 This is a schematic diagram of the gap adjustment mechanism in this invention;

[0019] Figure 4 This is a schematic diagram of the contouring cutter roller assembly in this invention;

[0020] Figure 5 This is a schematic diagram of the contour-following pressure plate assembly structure in this invention;

[0021] Figure 6 This is a schematic diagram illustrating the walnut shell-breaking principle in this invention.

[0022] Explanation of reference numerals in the attached drawings: 1-Bracket; 2-Contouring shell-breaking mechanism; 201-Limiting ring; 202-Sleeve; 203-Pressure plate mechanism; 2031-Draining plate; 2032-Guide plate; 2033-Baffle; 2034-Contouring pressure plate; 204-Fixed shaft; 205-Bearing; 206-Contouring cutter roller; 207-Rotating shaft; 3-Gap adjustment mechanism; 301-Adjusting handwheel; 302-Universal screw; 303-Chassis; 304-Bracket with threaded hole; 4-Discharge port; 5-Material collection mechanism; 6-Driving pulley; 7-Driven pulley; 8-Synchronous belt; 9-Drive motor. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, this embodiment provides a contour-following walnut shell-breaking device with adjustable gap, including a frame 1, a contour-following shell-breaking mechanism 2 mounted on a support, a gap adjustment mechanism 3, a material collection mechanism 5, and a power conveying mechanism 6-9.

[0025] The contour-following shell-breaking mechanism 2 includes multiple shell-breaking components for selectively breaking walnuts of different sizes after grading. In this embodiment, the contour-following shell-breaking mechanism includes three sets of shell-breaking components, meaning it can simultaneously break walnuts of three different sizes.

[0026] The gap adjustment mechanism 3 is used to laterally press the contouring plate 2034, thereby controlling the pressing gap between the contouring plate 2034 and the contouring cutter roller 206, thus controlling the size of the gap for breaking the walnut shell.

[0027] The material collection mechanism 5 is used to collect the shell-kernel mixture after it has been crushed by the shell-breaking mechanism 2.

[0028] The power transmission mechanism 6-9 is used to provide power to the rotating shaft 207 of the conformal shell breaking mechanism 2.

[0029] Specifically, bracket 1 uses a modular aluminum profile support for the overall arrangement and support of the shell-breaking device. Three sets of contouring cutter rollers 206 and three sets of contouring pressure plates 2304 are combined to form the shell-breaking mechanism. For ease of installation and coordination, bracket 1 separates the shell-breaking mechanism 2 and the power transmission mechanism into two worktables, and different combination methods can also be adopted according to actual needs.

[0030] In this embodiment, the walnut is subjected to compressive and shearing forces from the contoured blade roller 206 as it falls through the shell-breaking gap, causing the walnut shell to reach brittle stress and break, resulting in shell pulverization. The compression from the contoured groove ensures uniform stress distribution during the walnut's cracking process, thereby achieving better shell-breaking results and increasing the first-kernel yield.

[0031] like Figure 2 As shown, the walnut shell-breaking mechanism 2 includes a limiting ring 201, a bushing 202, a pressure plate mechanism 203, a fixed shaft 204, a bearing 205, a rotating shaft 207, and a contouring cutter roller 206.

[0032] The contouring cutter roller 206 is arranged opposite to the contouring pressure plate 203; the bushing 202 is installed on the top back of the pressure plate mechanism 203, the fixed shaft 204 is installed inside the bushing, and the limiting ring 201 is located on the fixed shaft 204; the rotating shaft 207 is fixed to the contouring cutter roller 206 by a key and is placed inside the bearing 205.

[0033] Specifically, the limiting rings 201 are set on both sides of the contouring pressure plate 2034. The purpose is to ensure that the contouring pressure plate 203 will not move laterally on the fixed shaft due to the squeezing force when the gap adjustment mechanism 3 adjusts the gap, so as not to cause the relative position of the contouring pressure plate 203 and the contouring cutter roller 206 to change, thus affecting the shell breaking effect.

[0034] Furthermore, a discharge port 10 is provided on the support 2 and below the shell-breaking mechanism 2. The discharge port 10 corresponds to the position of the shell-breaking mechanism 2 and is used for the shell kernels after shell breaking to fall into the discharge port 10 and flow out through the discharge port 10.

[0035] Furthermore, a receiving tray 5 is provided on the support and located below the discharge port 10, and the receiving tray 5 corresponds to the outlet position of the discharge port 10.

[0036] Specifically, for ease of installation, the receiving tray 5 is placed directly on the bracket 2.

[0037] In this embodiment, the initial gap between the contouring cutter roller 206 and the contouring pressure plate 203 is 60mm. The gap can be adjusted to a minimum of 20mm through the gap adjustment mechanism, which can accommodate walnuts of different sizes and thus improve the shelling efficiency.

[0038] Specifically, the drive motor 9 operates, transmitting power to the drive pulley 6 and then to the driven pulley 7 via the synchronous belt 8, thereby driving the rotating shaft 207 to rotate. The rotating shaft 207 drives the contouring roller 206 to rotate clockwise, squeezing and shearing the walnuts through the contouring gap between the contouring roller 206 and the contouring pressure plate 203.

[0039] like Figure 3 As shown, a gap adjustment mechanism 3 is provided on the bracket 2 and located on the back of the contour pressure plate. The gap adjustment mechanism 3 includes an adjustment handwheel 301, a universal screw 302, a base 303, and a bracket 304 with threaded holes.

[0040] Specifically, the universal screw 302 is 150mm long and has a nominal diameter of 10mm, while the chassis 303 has a diameter of 60mm. By rotating the adjusting handwheel 301, the universal screw 302 is driven to press against the chassis 303, thereby adjusting the angle of the contour plate 203 and achieving the purpose of adjusting the clearance.

[0041] like Figure 5 As shown, the pressure plate mechanism 4 includes a contour pressure plate 203, a flow guide plate 401, a flow deflector plate 402, and a baffle plate 403.

[0042] Specifically, the guide plate 401 is inclined at 30° and located at the upper end of the contouring pressure plate 203 to form a feeding channel. After grading, the walnuts enter the shell-breaking mechanism 2 through the guide plate 401. The guide plate 402 is located above the contouring pressure plate 203 and is set in correspondence with the guide plate 401 so that the walnuts fall accurately into the contouring shell-breaking mechanism. The baffle 403 is set on both sides of the contouring pressure plate 2034 and covers the contouring cutter roller 206 to prevent the walnuts from falling from both sides without being shelled.

[0043] The adjustable-gap contour-following walnut shell-cracking device provided by this invention operates as follows:

[0044] like Figure 3 As shown, the shelling gap is adjusted before the walnuts are shelled. According to the size of the grading specifications, the adjustment handwheel 301 is rotated to drive the universal screw 302 to press the bottom of the contouring pressure plate 203. The upper end of the contouring pressure plate 2034 is fixed to the limiting ring 201 through the fixed shaft 204. The bottom angle changes, while the position of the contouring cutter roller 206 remains unchanged, thereby setting a suitable shelling gap for walnuts of various sizes.

[0045] like Figure 5 As shown, the graded walnuts enter the shell-breaking device through the guide plate 401, and then fall precisely into the contour groove of the contouring pressure plate 203 along the guide plate 402. During this process, the drive motor 9 transmits power to the contouring cutter roller 206, causing the contouring cutter roller 206 to move clockwise. At this time, the walnuts are squeezed and sheared by the contouring groove between the contouring cutter roller 206 and the contouring pressure plate 203, completing the shell-breaking action of the walnuts.

[0046] The mixture of walnut shells and kernels after cracking continues to fall, flowing out through the discharge port 10. The flowing-out mixture falls into the collection tray 5 below, completing the collection process. The shell-cracking process and method of this invention can better ensure that the walnut kernels are not damaged when the walnut cracking rate is high, thereby improving the whole kernel rate of walnuts.

[0047] In this embodiment, the gap is adjusted using a universal screw 302, making the shell-breaking application more extensive and the shell-breaking process more precise and stable. Simultaneously, a contouring roller 206 and a contouring pressure plate 203, made by fitting the walnut shell curve, are used to contour-break the walnut, resulting in better shell-breaking effect and minimizing damage to the walnut kernel. The contouring curve can be described by a fourth-order polynomial curve equation, and its mathematical expression is as follows: Where x represents the position on the horizontal coordinate axis, and y represents the contour height on the vertical coordinate axis. The coefficients are polynomials, obtained through spline fitting or the least squares method. Preferably, the contour curve is described by a quartic polynomial curve equation, the mathematical expression of which is: The value of x ranges from [0,30]. The curve within this range precisely matches the target contour, which can effectively reduce processing errors and meet the accuracy requirements of the usage environment.

[0048] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A contour-following walnut shell-cracking device with adjustable gap, characterized in that, Includes a support (1), on which a contour-following shell-breaking mechanism (2), a gap adjustment mechanism (3), and a power transmission mechanism are provided; the contour-following shell-breaking mechanism (2) includes a contour-following cutter roller (206) and a pressure plate mechanism (203), which are used to generate shearing force and act on the walnut shell to break the walnut shell; The gap adjustment mechanism (3) includes a universal screw (302), and an adjusting handwheel (301) is provided at the end of the universal screw (302). The adjusting handwheel (301) is used to rotate the universal screw (302) to squeeze the pressure plate mechanism (203) and set the shell breaking gap. The power transmission mechanism is used to provide power to the conformal shell breaking mechanism (2). The conformal shell breaking mechanism (2) also includes a limiting ring (201), a bushing (202), a fixed shaft (204), a bearing (205), and a rotating shaft (207). The pressure plate mechanism (203) includes a diverting plate (2031), a guide plate (2032), a baffle (2033), and a conformal pressure plate (2034). The conformal cutter roller (206) is connected to the rotating shaft (207) by a key and is connected to the bearing. (205) Rotational motion is performed. The limiting ring (201) is arranged on both sides of the contouring pressure plate (2034). The fixed shaft (204) is located above the rear of the contouring pressure plate (2034). The contouring pressure plate (2034) is fixed on the shaft by the limiting ring (201) to achieve rotation. The pressure plate mechanism (203) and the contouring cutter roller (206) are arranged opposite to each other to form a shell-breaking channel. The guide plate (2031) is located at the upper end of the contouring pressure plate (2034) to form a feeding channel. The contouring cutter roller (206) is a gear-like structure with contouring grooves. The contouring pressure plate (2034) also has contouring grooves. The contouring grooves fit the curve of the walnut shell for longitudinal shell breaking. The contouring curve of the contouring grooves is described by a fourth-order polynomial curve equation. Its mathematical expression is: , where x takes values ​​in the range [0, 30].

2. The adjustable-gap contour-following walnut shell-cracking device according to claim 1, characterized in that, The guide plate (2032) is located above the contouring pressure plate (2034) and is correspondingly arranged with the guide plate (2031); the baffle (2033) is arranged on both sides of the contouring pressure plate (2034) and covers the contouring cutter roller (206).

3. The adjustable-gap conformal walnut shell-breaking device according to claim 1, characterized in that, The support (1) is provided with a discharge port (4) located below the conformal shell breaking mechanism (2). The discharge port (4) corresponds to the position of the conformal shell breaking mechanism (2). The shell kernel after shell breaking falls directly into the discharge port (4) and flows out through the discharge port (4).

4. The adjustable-gap conformal walnut shell-breaking device according to claim 3, characterized in that, A material collection mechanism (5) is provided on the support (1) and below the discharge port (4), and the material collection mechanism (5) corresponds to the outlet position of the discharge port (4).

5. The adjustable gap contour-following walnut shell-cracking device according to claim 1, characterized in that, The universal screw (302) has a base plate (303) at its front end. The base plate (303) is mounted on the back of the profile pressure plate (2034). The universal screw (302) is fixed by a bracket (304) with a threaded hole.

6. A walnut shell-cracking device with adjustable gap according to any one of claims 1-5, characterized in that, The power transmission mechanism includes a drive pulley (6), a driven pulley (7), a synchronous belt (8), and a drive motor (9). The drive motor (9) is located on the bracket (1). The drive pulley (6) is located on the power output shaft of the drive motor (9). The driven pulley (7) is located on the rotating shaft. The drive pulley (6) and the driven pulley (7) are connected by the synchronous belt (8). Driven by the drive motor (9), the power is transmitted to the transmission shaft, which drives the contouring cutter roller (206) to rotate, thereby realizing the relative movement between the contouring cutter roller (206) and the pressure plate mechanism (203).

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