Sample preparation crusher with anti-loosening structure

Abstract

The utility model relates to the technical field of crushers, and discloses a sample preparation crusher with an anti-loose structure, which comprises a rack, a support seat, a vibration mechanism, a sample preparation material bowl and a pressing structure, the support seat is arranged on the upper side of the rack at intervals, a plurality of elastic pieces are arranged between the support seat and the rack, the vibration mechanism is fixedly connected with the support seat, and the pressing structure is fixedly connected with the sample preparation material bowl. The vibrating mechanism and the rack are distributed at intervals; the sample preparation material bowl is arranged on the supporting seat, the pressing structure comprises a fixing frame and a fastener, the fixing frame is fixedly connected with the supporting seat, the fastener is in threaded connection with the fixing frame, and the fastener is used for being in pressing fit with the sample preparation material bowl; an anti-loosening structure is further installed between the fastening piece and the fixing frame, and when the fastening piece is screwed, the anti-loosening structure is in sliding fit with the fastening piece. When the fastener is unscrewed, the anti-loosening structure is matched with the fastener in a rotation stopping mode. And the anti-loosening structure can effectively prevent the condition that the fastener is reversely unscrewed due to vibration, so that the sealing reliability of the sample preparation material bowl is ensured, and the risk of leakage of the crushed sample is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pulverizer technical field especially a kind of sample preparation pulverizer with anti-loose structure. BACKGROUND

[0002] Currently, in the material research of coal, ore, rock and other non-metals or brittle metals, sample preparation pulverizer is usually used to crush experimental materials into micro-powder samples, and its principle is to use the vibration impact force and rolling pressure generated by high-speed rotating eccentric hammer.

[0003] For example, a kind of vibration pulverizing device is disclosed in Chinese patent application with application publication number CN112774825A and application publication date May 11, 2021, which includes inner support, outer support and vibration motor, vibration motor is connected with eccentric block cavity, and power output end is provided with eccentric block rotatable in eccentric block cavity, eccentric block cavity is provided with vibration block extending into the inside of pulverizing cavity;Inner support, eccentric block cavity are connected by a plurality of springs, outer support is provided with pulverizing cavity, the upper end of pulverizing cavity is provided with sealing cover, the upper of outer support is provided with pressing arm;Pressing arm is hinged to the non-center of eccentric wheel, when sealing cover is covered on the upper end of pulverizing cavity, eccentric wheel connects the upper surface of sealing cover.

[0004] The eccentric wheel of the existing vibration pulverizing device is also connected with the pressing handle for driving the eccentric wheel to rotate, and the extrusion of the outer surface of the eccentric wheel on the upper surface of the sealing cover can be realized by driving the eccentric wheel to rotate through the pressing handle. However, in the vibration sampling process, the eccentric wheel is easy to rotate loose under the influence of vibration, which cannot guarantee the reliability of the sealing cover, and there is a risk of leakage of the crushed sample. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that in the vibration sampling process, the eccentric wheel is easy to rotate loose under the influence of vibration, which cannot guarantee the reliability of the sealing cover, and there is a risk of leakage of the crushed sample.

[0006] In order to solve the above technical problems, the utility model provides a technical scheme of sample preparation pulverizer with anti-loose structure:

[0007] The sample preparation pulverizer with anti-loose structure includes rack, support seat, vibration mechanism, sample preparation material bowl and compression structure, the support seat is arranged at the upper side of the rack, a plurality of elastic members are installed between the support seat and the rack, the vibration mechanism is fixedly connected with the support seat, and the vibration mechanism is distributed at intervals with the rack;

[0008] The sample preparation pot is arranged on the support base, the pressing structure comprises a fixing frame and a fastener, the fixing frame is fixedly connected with the support base, and the fastener is threadedly connected with the fixing frame, and the fastener is used for pressing fit with the sample preparation pot.

[0009] A loosening prevention structure is further arranged between the fastener and the fixing frame, the loosening prevention structure is in sliding fit with the fastener when the fastener is screwed, and the loosening prevention structure is in rotation-stopping fit with the fastener when the fastener is unscrewed.

[0010] Further, the loosening prevention structure comprises a ratchet wheel and a pawl, the ratchet wheel is slidingly sleeved on the fastener, and the ratchet wheel is in rotation-stopping fit with the fastener in the circumferential direction;

[0011] The pawl is hingedly arranged on the fixing frame, the hinging axis of the pawl is arranged in parallel and spaced apart from the fastener, the pawl is in forward sliding and reverse locking fit with the ratchet wheel, and the forward direction of the ratchet wheel is the same as the screwing direction of the fastener.

[0012] Further, a guide groove is formed in the fastener, the length direction of the guide groove extends along the axis direction of the fastener, the inside of the ratchet wheel is provided with a protrusion, and the protrusion is in sliding fit with the guide groove.

[0013] Further, a positioning column is further arranged on the fixing frame, and a reverse reset member is connected between the positioning column and the pawl.

[0014] Further, a rotating hand wheel is fixedly connected to the upper portion of the fastener, and the rotating hand wheel is arranged in upper and lower spaced apart relationship with the ratchet wheel.

[0015] Further, the fastener is further sleeved with a spiral compression spring, and the spiral compression spring is in top pressing fit with the ratchet wheel and the rotating hand wheel respectively.

[0016] Further, the sample preparation pot comprises a pot body and a pot cover, the pot body is arranged on the support base, and the pot cover is detachably connected with the pot body; the pressing structure further comprises a force transmission member, the force transmission member is connected to the lower end of the fastener, and the force transmission member is in pressing fit with the pot cover.

[0017] Further, the fastener and the force transmission member are ball-hinged, the force transmission member is a force transmission triangular frame, and the lower end of the force transmission member is provided with three pressing feet, and the three pressing feet are in pressing fit with the pot cover.

[0018] Further, the lower end of the fastener is provided with a ball head, the upper end of the force transmission member is provided with a ball seat, and the ball head and the ball seat are in concave-convex fit.

[0019] The sample preparation pulverizer with the anti-loosening structure has the advantages that the sample preparation pulverizer with the anti-loosening structure adopts the design form of a rack, a supporting seat, a vibrating mechanism, a sample preparation bowl, a pressing structure and an anti-loosening structure, the supporting seat is arranged on the upper side of the rack at intervals, a plurality of elastic members are arranged between the supporting seat and the rack, the vibrating mechanism is fixedly connected with the supporting seat, the rack provides an installation fulcrum for the supporting seat and the vibrating mechanism, the vibrating mechanism generates a vibrating force on the supporting seat, the vibrating frequency and amplitude of the supporting seat are prevented from being constrained by the fulcrum in combination with the plurality of elastic members, and the freedom of the vibrating movement of the supporting seat is ensured.

[0020] The sample preparation bowl is arranged on the supporting seat, the pressing structure comprises a fixing frame and a fastener, the fixing frame is fixedly connected with the supporting seat, and the fastener is threadedly connected with the fixing frame.

[0021] In addition, the anti-loosening structure is arranged between the fastener and the fixing frame, the anti-loosening structure is in sliding fit with the fastener when the fastener is screwed, and the anti-loosening structure is in rotation-stopping fit with the fastener when the fastener is loosened. When the fastener is screwed in the forward direction, the anti-loosening structure allows the fastener to normally rotate and tighten, so that the pressing structure and the sample preparation bowl form reliable pressing action; after the fastener is screwed in place, the anti-loosening structure generates rotation-stopping action on the fastener in the loosening direction, so that the fastener is effectively prevented from being loosened in the reverse direction due to vibration, and the sealing reliability of the sample preparation bowl is ensured, and the risk of leakage of the pulverized sample is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the sample preparation pulverizer with the anti-loosening structure in the utility model embodiment;

[0023] Figure 2 is a front view of the sample preparation pulverizer with the anti-loosening structure in the utility model embodiment;

[0024] Figure 3 is Figure 2 is a sectional view of the sample preparation pulverizer with the anti-loosening structure at A-A in the utility model embodiment;

[0025] Figure 4 is an enlarged view of the anti-loosening structure in the utility model embodiment;

[0026] Figure 5 is a sectional view of the sample preparation pulverizer with the anti-loosening structure in the utility model embodiment;

[0027] In the figure: 1-frame, 10-elastic member, 11-avoidance hole, 2-supporting seat, 20-housing groove, 21-inner ring conical part, 3-vibration mechanism, 4-mortar body, 40-outer ring conical part, 44-crushing ring, 45-crushing hammer, 5-mortar cover, 6-pressing structure, 61-fixing frame, 62-fastener, 620-guiding groove, 63-force transmission member, 630-pressing foot, 64-rotary hand wheel, 65-spiral compression spring, 66-ball head, 67-ball seat, 7-anti-loosening structure, 71-ratchet, 710-protrusion, 72-pawl, 73-positioning column, 74-reverse reset member. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like in the present application are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] As Figures 1 to 5As shown, the sample preparation pulverizer with the anti-loosening structure comprises a rack 1, a support seat 2, a vibrating mechanism 3, a sample preparation bowl and a pressing structure 6, the support seat 2 is arranged on the upper side of the rack 1 at intervals, a plurality of elastic members 10 are arranged between the support seat 2 and the rack 1, the vibrating mechanism 3 is fixedly connected with the support seat 2, and the vibrating mechanism 3 is distributed at intervals from the rack 1.

[0033] The sample preparation bowl is arranged on the support seat 2, the pressing structure 6 comprises a fixing frame 61 and a fastener 62, the fixing frame 61 is fixedly connected with the support seat 2, the fastener 62 is threadedly connected to the fixing frame 61, and the pressing structure 6 is used for pressing and matching with the sample preparation bowl; the anti-loosening structure 7 is further arranged between the fastener 62 and the fixing frame 61, the anti-loosening structure 7 is in sliding matching with the fastener 62 when the fastener 62 is screwed, and the anti-loosening structure 7 is in rotation-stopping matching with the fastener 62 when the fastener 62 is unscrewed.

[0034] The sample preparation pulverizer with the anti-loosening structure adopts the design form of the rack 1, the support seat 2, the vibrating mechanism 3, the sample preparation bowl, the pressing structure 6 and the anti-loosening structure 7, the support seat 2 is arranged on the upper side of the rack 1 at intervals, a plurality of elastic members 10 are arranged between the support seat 2 and the rack 1, the vibrating mechanism 3 is fixedly connected with the support seat 2, the rack 1 provides an installation fulcrum for the support seat 2 and the vibrating mechanism 3 to be suspended from the ground, the vibrating mechanism 3 generates a vibration force on the support seat 2, and in combination with the plurality of elastic members 10, the vibration frequency and amplitude of the support seat 2 can be prevented from being constrained by the fulcrum, and the freedom of vibration movement of the support seat 2 is ensured.

[0035] The sample preparation bowl is arranged on the support seat 2, and the pressing structure 6 comprises a fixing frame 61 and a fastener 62, the fixing frame 61 is fixedly connected with the support seat 2, and the fastener 62 is threadedly connected to the fixing frame 61. In use, the fastener 62 is rotated to act downward, the pressing structure 6 can generate a pressing and fixing action on the sample preparation bowl, a pulverizing sealing cavity is formed in the sample preparation bowl, the sample preparation bowl vibrates synchronously with the support seat 2 during work, and therefore the material in the pulverizing sealing cavity can be efficiently broken.

[0036] In addition, the anti-loosening structure 7 is further arranged between the fastener 62 and the fixing frame 61, the anti-loosening structure 7 is in sliding matching with the fastener 62 when the fastener 62 is screwed, and the anti-loosening structure 7 is in rotation-stopping matching with the fastener 62 when the fastener 62 is unscrewed. When the fastener 62 is screwed in a forward direction, the anti-loosening structure 7 allows the fastener 62 to normally rotate and tighten, so that the pressing structure 6 and the sample preparation bowl form a reliable pressing action; after being screwed in place, the anti-loosening structure 7 generates a rotation-stopping action on the fastener 62 in an unscrewing direction, which can effectively prevent the fastener 62 from being unscrewed in a reverse direction due to vibration, and further ensure the sealing reliability of the sample preparation bowl and avoid the risk of pulverized sample leakage.

[0037] In the embodiment, the anti-loosening structure 7 comprises a ratchet wheel 71 and a pawl 72, the ratchet wheel 71 is sleeved on the fastener 62 and is in circumferential rotation-stopping cooperation with the fastener 62, and the pawl 72 is hingedly installed on the fixing frame 61, the hinging axis of the pawl 72 is arranged in parallel and spaced apart from the fastener 62, the pawl 72 is in forward sliding and reverse locking cooperation with the ratchet wheel 71, and the forward direction of the ratchet wheel 71 is the same as the tightening direction of the fastener 62.

[0038] The working principle is that the ratchet wheel 71 rotates forward with the tightening action of the fastener 62, at this time, the pawl 72 is in forward sliding cooperation with the ratchet wheel 71, and the normal tightening work of the fastener 62 is provided. After being tightened in place, the fastener 60 is loosened due to vibration, and the ratchet wheel 71 rotates reversely synchronously, at this time, the pawl 72 is in reverse rotation-stopping cooperation with the ratchet wheel 71, thereby reliably preventing the ratchet wheel 71 and the fastener 62 from loosening.

[0039] Specifically, the fastener 62 is provided with a guide groove 620 extending along the axis direction of the fastener 62, and the inside of the ratchet wheel 71 is provided with a protrusion 710 in sliding cooperation with the guide groove 620. Through the sliding cooperation between the protrusion 710 and the guide groove 620, it can be ensured that the fastener 62 can drive the ratchet wheel 71 to rotate synchronously to achieve the purpose of reverse rotation-stopping, and in the process of rotation, the ratchet wheel 71 slides up and down along the guide groove 620 relative to the fastener 62, ensuring that the ratchet wheel 71 always forms a stable cooperation relationship with the pawl 72.

[0040] As a further preferred scheme, the fixing frame 61 is further provided with a positioning column 73, and a reverse resetting member 74 is connected between the positioning column 73 and the pawl 72. Specifically, the reverse resetting member 74 is a cylindrical compression spring, which can generate a reverse elastic resetting force on the pawl 72, ensuring that the pawl 72 is always pressed against the outer circumferential surface of the ratchet wheel 71, thereby ensuring the reliability of the reverse rotation-stopping.

[0041] In addition, the upper part of the fastener 62 is fixedly connected with a rotating hand wheel 64, and the rotating hand wheel 64 is arranged in spaced apart relationship with the ratchet wheel 71. The fastener 62 is further sleeved with a spiral compression spring 65, and the spiral compression spring 65 is in pressing cooperation with the ratchet wheel 71 and the rotating hand wheel 64 respectively. The fastener 62 can be tightened or loosened by rotating the rotating hand wheel 64, and the spiral compression spring 65 is between the ratchet wheel 71 and the rotating hand wheel 64, which ensures that the ratchet wheel 71 remains in the position of being attached to the fixing frame 61, preventing the ratchet wheel 71 from being displaced due to vibration.

[0042] The sample preparation crucible comprises a crucible body 4 and a crucible cover 5, the crucible body 4 is installed on the support seat 2, and the crucible cover 5 is detachably connected with the crucible body 4; the pressing structure 6 further comprises a force transmission member 63, the force transmission member 63 is connected to the lower end of the fastener 62, and the force transmission member 63 is in pressing cooperation with the crucible cover 5. Figure 5As shown, the middle part of the support base 2 is provided with a receiving groove 20, the receiving groove 20 is matched with the crucible body 4, the inner side of the receiving groove 20 is provided with an inner ring conical part 21, and the outer wall of the crucible body 4 is provided with an outer ring conical part 40. The receiving groove 20 plays a positioning role on the crucible body 4, the inner ring conical part 21 is guided and matched with the outer ring conical part 40, and the pressing structure 6 can accurately and stably press the sample preparation crucible to the position, so that the relative displacement of the sample preparation crucible and the support base 2 is prevented during vibration.

[0043] In the embodiment, the upper part of the rack 1 is provided with a avoiding hole 11, and the vibration mechanism 3 is suspended in the avoiding hole 11, so that the vibration mechanism 3 is arranged in a spaced manner with the rack 1. In use, the material is placed in the interval between the crushing ring 44 and the crushing hammer 45, and the interval between the crucible body 4 and the crushing ring 44, the crucible cover 5 is closed and tightly fixed, the vibration mechanism 3 is started to drive the support base 2 and the crucible body 4 to vibrate, and the crushing ring 44 and the crushing hammer 45 collide fiercely in the crucible body 4 due to the inertial force, so that the material can be impacted and crushed to complete the crushing treatment.

[0044] In the embodiment, the fastener 62 is connected with the force transmission member 63 through a ball hinge, the force transmission member 63 is a force transmission tripod, the lower end of the force transmission member 63 is provided with three pressing feet 630, and the three pressing feet 630 are tightly matched with the crucible cover 5. The three pressing feet of the force transmission tripod can generate balanced planar pressing force on the crucible cover 5. In addition, the lower end of the fastener 62 is provided with a ball head 66, the upper end of the force transmission member 63 is provided with a ball seat 67, the ball head 66 is matched with the ball seat 67 in a concave-convex manner, the ball hinge connection enables the force transmission member 63 to adaptively change the angle according to the closing requirement, so as to ensure the sealing performance of the crucible cover 5 and the crucible body 4 at any angle.

[0045] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should be regarded as the protection scope of the present application.

Claims

1. A sample pulverizer with an anti-loosening structure, characterized in that, The utility model provides a sample preparation device, which comprises a rack, a supporting seat, a vibrating mechanism, a sample preparation bowl and a pressing structure, the supporting seat is arranged on the upper side of the rack at intervals, a plurality of elastic members are arranged between the supporting seat and the rack, the vibrating mechanism is fixedly connected with the supporting seat, and the vibrating mechanism is arranged at intervals with the rack; The sample preparation bowl is arranged on the supporting seat, the pressing structure comprises a fixing frame and a fastener, the fixing frame is fixedly connected with the supporting seat, and the fastener is threadedly connected with the fixing frame; the fastener is used for pressing and matching with the sample preparation bowl. A loosening prevention structure is arranged between the fastener and the fixing frame, the loosening prevention structure is in sliding matching with the fastener when the fastener is screwed, and the loosening prevention structure is in rotation-stopping matching with the fastener when the fastener is loosened.

2. The sample preparation mill with a loosening prevention structure according to claim 1, characterized by, The loosening prevention structure comprises a ratchet wheel and a pawl, the ratchet wheel is slidably sleeved on the fastener, and the ratchet wheel is in circumferential rotation-stopping matching with the fastener; The pawl is hingedly arranged on the fixing frame, the hinging axis of the pawl is arranged in parallel and at intervals with the fastener, the pawl is in forward sliding and reverse locking matching with the ratchet wheel, and the forward direction of the ratchet wheel is the same as the screwing direction of the fastener.

3. The sample preparation mill with a loosening prevention structure according to claim 2, characterized by, A guide groove is formed in the fastener, the length direction of the guide groove extends along the axis direction of the fastener, the inside of the ratchet wheel is provided with a protrusion, and the protrusion is in sliding matching with the guide groove.

4. The sample preparation mill with a loosening prevention structure according to claim 3, characterized by A positioning column is further arranged on the fixing frame, and a reverse reset member is connected between the positioning column and the pawl.

5. The sample preparation mill with a loosening prevention structure according to claim 2, characterized by The upper portion of the fastener is fixedly connected with a rotating hand wheel, and the rotating hand wheel is arranged at intervals above and below the ratchet wheel.

6. The sample preparation mill with a loosening prevention structure according to claim 5, characterized by The fastener is further sleeved with a spiral compression spring, and the spiral compression spring is in top pressing matching with the ratchet wheel and the rotating hand wheel respectively.

7. The sample preparation mill with a loosening prevention structure according to claim 1, characterized by The sample preparation bowl comprises a bowl body and a bowl cover, the bowl body is arranged on the supporting seat, and the bowl cover is detachably connected with the bowl body; the pressing structure further comprises a force transmission member, the force transmission member is connected to the lower end of the fastener, and the force transmission member is in pressing matching with the bowl cover.

8. The sample preparation mill with a loosening prevention structure according to claim 7, characterized by The fastener and the force transmission member are ball-hinged, the force transmission member is a force transmission triangular frame, the lower end of the force transmission member is provided with three pressing feet, and the three pressing feet are in pressing matching with the bowl cover.

9. The sample preparation mill with a loosening prevention structure according to claim 8, characterized by, The lower end of the fastener is provided with a ball head, the upper end of the force transmission member is provided with a ball seat, and the ball head and the ball seat are in concave-convex matching.

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