A sample standard test screening machine for agricultural product detection

Abstract

The utility model discloses a sample standard test screening machine for agricultural product detection, including screening machine and slewing mechanism, and a plurality of sieve trays are installed in sequence to the vertical clamping of slewing mechanism top both sides vertical fixed long screw rod, and the movable clamping of the pressing plate that presses in the top of sieve tray is arranged between two long screw rods, and the surface screw thread connection of long screw rod has the knob that resists the pressing plate downwards, and the screw thread of long screw rod surface both sides is vertically provided with broken groove no.

Description

Technical Field

[0001] This utility model relates to the field of agricultural product testing technology, specifically to a sample standard testing and screening machine for agricultural product testing. Background Technology

[0002] Standard testing sieves, also known as test sieves, sample sieves, or analytical sieves, are sieving devices used in laboratories, primarily for particle size analysis and classification of materials. The sieve machine and sieve discs conform to national standards, ensuring the accuracy and comparability of test results. Utilizing high-frequency vibration technology, they quickly complete material sieving, making them suitable for a wide variety of materials. They offer a broad particle size range, with sieve disc mesh sizes from 8 to 500 mesh, providing precise particle size analysis. Equipped with a digital display timer, the sieving time can be set, reducing testing errors.

[0003] In agricultural product testing, standard inspection sieves are used to sieve samples. These sieves often have up to seven layers, with smaller mesh sizes placed on top and larger mesh sizes on the bottom for standard sieving. The number of sieve layers can be adjusted as needed during actual operation. In agricultural product testing, the number of sieve layers is often related to the type of sample. When installing the sieves, a pressure plate holds the upper sieve in place, and a knob on a long screw holds the pressure plate in place. When installing a small number of sieves, turning the knob downwards requires a long distance; when installing a large number of sieves, turning the knob upwards requires a long distance, resulting in too many turns and making operation inconvenient. To improve efficiency, we considered whether there was a better way to quickly fix the sieves and facilitate testing. Therefore, we proposed a new type of standard inspection sieve machine for agricultural product testing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sample standard testing sieve machine for agricultural product testing, which solves the problem that the fixed sieve plate of existing standard testing sieve machines is not convenient enough.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A sample standard testing screening machine for agricultural products includes a screening machine and a rotary mechanism. Several screen discs are vertically clamped and installed on the rotary mechanism in sequence. Long screws are vertically fixed on both sides of the top of the rotary mechanism. A pressure plate that presses against the top of the screen disc is movably clamped between two of the long screws. A knob that presses against the pressure plate is threaded on the surface of the long screw.

[0007] The long screw has vertically arranged slot 1 and slot 2 on the threads on both sides of its surface. The knob has a sleeve fitted onto the surface of the long screw. The inner wall of the sleeve has vertically arranged protruding ridges 1 and 2 on both sides, corresponding to slot 1 and slot 2. The protruding ridges 1 and 2 have threads that are adapted to the shape of the long screw surface.

[0008] The front and back of the pressure plate are fixed with a fixing plate pressing on the top of the screen plate. A support rod is vertically and movably inserted into the fixing plate. The lower end of the support rod is equipped with a support foot supporting the top of the rotary mechanism. A support spring is sleeved on the surface of the support rod between the support foot and the fixing plate.

[0009] Preferably, the pressure plate has slots at both ends corresponding to the long screw.

[0010] Preferably, the width of the first broken groove is greater than the width of the second broken groove, and the width of the first broken groove does not exceed one-eighth of the circumference of the long screw.

[0011] Preferably, the surfaces of the fixing plate and the pressure plate are fitted with rubber sleeves at positions corresponding to the screen plate.

[0012] Preferably, the bottom of the support foot is fixed with a rubber pad.

[0013] Preferably, the upper half of the support rod is threaded, and a stop nut is installed on the support rod via the thread.

[0014] Preferably, each of the support rods is equipped with two stop nuts, and a spring washer fitted on the support rod is provided between the two stop nuts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) By setting up slot 1 and slot 2, when the protrusions 1 and 2 of the inner sleeve of the knob correspond to the positions of slot 1 and slot 2, the knob and sleeve can move vertically along the long screw without rotation. When the knob is moved to contact the pressure plate, it can be turned to achieve a fixed effect through the threaded connection. The movement, installation and disassembly are very convenient, which is very suitable for the situation where the number of sieves is often adjusted in agricultural product testing, bringing convenience to the inspection and solving the problem that the fixed sieves of the existing standard inspection sieve machine is not convenient enough.

[0017] (2) By setting a fixed plate, support rod, support foot and support spring, the long screw is only fixed at the lower end on the rotary mechanism, and the local load is large. When there are many screens and they are stacked high, the fixed plate pressing on the front and back of the top of the screen is supported on the rotary mechanism by the support rod, support spring and support foot on the basis of the long screw and pressure plate fixing the screens from both sides. This increases the fixing effect on the large number of screens and improves the stability. Attached Figure Description

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2This is a front view of the long screw and support rod of this utility model;

[0020] Figure 3 This is a top view of the pressure plate and sieve plate of this utility model;

[0021] Figure 4 This is a top view of the pressure plate and fixing plate of this utility model;

[0022] Figure 5 This is a partial side view of the long screw of this utility model;

[0023] Figure 6 This is a top view of the long screw of this utility model;

[0024] Figure 7 This is a top view of the knob of this utility model;

[0025] Figure 8 This is a side sectional view of the knob of this utility model.

[0026] In the diagram: 1. Screening machine; 2. Rotary mechanism; 3. Screen disc; 4. Long screw; 401. Slot 1; 402. Slot 2; 5. Pressure plate; 501. Slot; 6. Knob; 7. Sleeve; 701. Raised edge 1; 702. Raised edge 2; 8. Fixing plate; 9. Support rod; 10. Support foot; 11. Support spring; 12. Rubber sleeve; 13. Rubber pad; 14. Stop nut; 15. Spring washer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-8 As shown, this utility model provides a technical solution: a sample standard inspection screening machine for agricultural product testing, including a screening machine 1 and a rotary mechanism 2. Several screens 3 are vertically mounted on the rotary mechanism 2. Long screws 4 are vertically fixed on both sides of the top of the rotary mechanism 2. A pressure plate 5 pressing on the top of the screen 3 is movably connected between two long screws 4. The two ends of the pressure plate 5 are provided with slots 501 corresponding to the long screws 4. A knob 6 that presses down against the pressure plate 5 is threaded on the surface of the long screws 4.

[0029] On the threads on both sides of the surface of the long screw 4, there are vertically arranged break grooves 401 and 402. The width of break groove 401 is greater than the width of break groove 402, and the width of break groove 401 does not exceed one-eighth of the circumference of the long screw 4. Break grooves 401 and 402 do not need to be arranged symmetrically on the left and right, thereby improving the installation effect of sleeve 7 and long screw 4 and preventing sleeve 7 from being easily removed from long screw 4.

[0030] A sleeve 7 is fixed inside the knob 6 and fitted onto the surface of the long screw 4. On both sides of the inner wall of the sleeve 7, there are vertically arranged protruding ridges 701 and 702 corresponding to the first and second break grooves 401 and 402, respectively. The protruding ridges 701 and 702 are provided with threads that are adapted to the shape of the surface of the long screw 4.

[0031] The front and back of the pressure plate 5 are fixed with a fixing plate 8 pressing on the top of the screen plate 3. The surfaces of the fixing plate 8 and the pressure plate 5 are fitted with rubber sleeves 12 at the positions corresponding to the screen plate 3 to avoid scratching and abnormal noise caused by rigid contact. A support rod 9 is vertically and movably inserted into the fixing plate 8. The upper half of the surface of the support rod 9 is threaded. The support rod 9 is fitted with a stop nut 14 through the thread. Two stop nuts 14 are installed on each support rod 9, and a spring washer 15 is fitted on the support rod 9 between the two stop nuts 14.

[0032] The lower end of the support rod 9 is equipped with a support foot 10 that supports the top of the rotary mechanism 2. The bottom of the support foot 10 is fixed with a rubber pad 13 to improve the shock absorption and buffering effect. A support spring 11 is provided between the support foot 10 and the fixed plate 8 and is sleeved on the surface of the support rod 9.

[0033] Working principle:

[0034] The sieve discs 3 are sequentially snapped onto the rotating mechanism 2 according to their mesh size. The agricultural product sample to be sieved is added to the topmost sieve disc 3. The pressure plate 5 is then snapped onto the long screw 4. Aligning the protrusions 701 and 702 of the inner sleeve 7 of the knob 6 with the positions of the first and second grooves 401 and 402, the knob 6 and sleeve 7 can move vertically downwards along the long screw 4 without rotation. Once the knob 6 contacts the pressure plate 5, it is then turned to achieve a fixed connection through the threaded connection. The pressure plate 5 and the fixing plate 8 press the sieve disc 3 onto the rotating mechanism 2. The fixing plate 8, supported by the support rod 9 supported by the support spring 11, can stably support the rotating mechanism 2. The long screw 4, the support rod 9, the pressure plate 5, and the fixing plate 8 fix the sieve disc 3 at four points: front, back, left, and right, improving stability.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sample standard testing sieving machine for agricultural products, comprising a sieving machine (1) and a rotary mechanism (2), wherein a plurality of sieve discs (3) are vertically and sequentially mounted on the rotary mechanism (2), characterized in that: The rotary mechanism (2) has long screws (4) vertically fixed on both sides of the top. A pressure plate (5) pressing on the top of the screen plate (3) is movably connected between the two long screws (4). A knob (6) that presses down against the pressure plate (5) is threaded on the surface of the long screws (4). The long screw (4) has vertically arranged groove 1 (401) and groove 2 (402) on the threads on both sides of the surface. The knob (6) has a sleeve (7) fitted on the surface of the long screw (4). The inner wall of the sleeve (7) has vertically arranged protrusion 1 (701) and protrusion 2 (702) corresponding to groove 1 (401) and groove 2 (402) respectively. The protrusion 1 (701) and protrusion 2 (702) have threads that are adapted to the shape of the surface of the long screw (4). The front and back of the pressure plate (5) are fixed with a fixing plate (8) pressing on the top of the screen plate (3). A support rod (9) is vertically and movably inserted on the fixing plate (8). A support foot (10) supporting the top of the rotary mechanism (2) is installed at the lower end of the support rod (9). A support spring (11) sleeved on the surface of the support rod (9) is provided between the support foot (10) and the fixing plate (8).

2. The sample standard testing and screening machine for agricultural product testing according to claim 1, characterized in that: The pressure plate (5) has slots (501) at both ends that correspond to the long screw (4).

3. The sample standard testing and sieving machine for agricultural product testing according to claim 1, characterized in that: The width of the first slot (401) is greater than the width of the second slot (402), and the width of the first slot (401) does not exceed one-eighth of the circumference of the long screw (4).

4. The sample standard testing and sieving machine for agricultural product testing according to claim 1, characterized in that: The surfaces of the fixing plate (8) and the pressure plate (5) are fitted with rubber sleeves (12) at the positions corresponding to the sieve plate (3).

5. A sample standard testing and screening machine for agricultural product testing according to claim 1, characterized in that: The bottom of the support foot (10) is fixed with a rubber pad (13).

6. The sample standard testing and screening machine for agricultural product testing according to claim 1, characterized in that: The upper half of the support rod (9) is threaded, and a stop nut (14) is installed on the support rod (9) via the thread.

7. A sample standard testing and screening machine for agricultural product testing according to claim 6, characterized in that: Each of the support rods (9) is equipped with two stop nuts (14), and a spring washer (15) is provided between the two stop nuts (14) and sleeved on the support rod (9).

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