Hammer mill with adjustable hammer-sieve gap

Abstract

The utility model relates to a hammer mill with an adjustable gap between a hammer and a sieve. The hammer mill comprises a shell, the screen is arranged at the bottom of the shell, and screen holes are formed in the surface of the screen and used for screening the crushed materials; the distance adjusting assembly is arranged in the shell, the distance adjusting assembly is used for adjusting the distance between the hammers and the screens, the distance adjusting assembly comprises a rotating shaft inserted in the middle of the inner wall of the shell, a bidirectional push rod and first hammer rods symmetrically arranged, the rotating shaft fixedly sleeves the middle of the outer portion of the bidirectional push rod, and the first hammer rods are fixedly arranged at the telescopic end of the bidirectional push rod; and a plurality of hammers I are arranged on the hammer rods I. Through the use of the distance adjusting assembly, the power assembly and the stirring assembly, different distances between the hammer screens can be adjusted according to needs, materials can be crushed to different degrees, products with different granularities can be produced conveniently, meanwhile, large materials sinking on the screens can be stirred, and the screening efficiency is improved. And the materials can be crushed more sufficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of crushers, in particular to a hammer mill with adjustable hammer-screen gap. Background Art

[0002] A hammer mill is a device that obtains the required powder through high-speed shearing and hammering and is driven by a strong air flow through the filtration of a stainless steel screen. The hammer mill is widely used and can be used in the pharmaceutical, food, chemical, scientific research and metallurgical industrial sectors. It can crush suitable chemical materials and dry brittle materials such as traditional Chinese medicinal materials. The hammer mill has the characteristics of low temperature, low noise, high efficiency, high output per kilowatt-hour and good versatility. The distance between the hammer and the screen of the hammer mill is an important factor affecting the crushing efficiency. When products with different particle diameters need to be produced, a hammer mill with adjustable hammer-screen gap is required;

[0003] After retrieval, a Chinese patent with the publication number of CN208115843U discloses a hammer mill, including: a machine body, a rotor and a stator. The top of the machine body is provided with a feed inlet, the bottom of the machine body is provided with a discharge outlet, and a crushing chamber is arranged inside the machine body; the rotor is installed in the crushing chamber, and the rotor includes a plurality of hammer pieces, and the plurality of hammer pieces are respectively fixedly installed on the rotor along the circumferential annular array of the rotor; the stator is arranged corresponding to the rotor and fixedly installed at the bottom of the inner wall of the crushing chamber, and a plurality of fixed teeth are fixedly arranged on the stator, and there is a gap between every two adjacent fixed teeth, and at least one hammer piece extends into the gap. Through this structural design, not only the working efficiency and crushing effect of the hammer mill are improved, but also the number of hammer pieces installed is reduced, thereby reducing the starting current and maintenance cost of the hammer mill and improving the effective work efficiency of the hammer mill under load operation.

[0004] In this patent, the distance between the hammer piece and the screen cannot be adjusted. When products of different sizes need to be produced, machinery needs to be replaced and different machinery needs to be used, which increases the cost of using the equipment. At the same time, the particles with larger diameters are heavier, and the particles sink on the screen and cannot rotate with the hammer pieces in the annular layer, easily causing problems such as clogging of the screen holes and insufficient crushing. Summary of the Utility Model

[0005] Aiming at the technical problems in the existing patent that the distance between the hammer piece and the screen cannot be adjusted, when products of different sizes need to be produced, machinery needs to be replaced and different machinery needs to be used, which increases the cost of using the equipment. At the same time, the particles with larger diameters are heavier, and the particles sink on the screen and cannot rotate with the hammer pieces in the annular layer, easily causing problems such as clogging of the screen holes and insufficient crushing, the utility model provides a hammer mill with adjustable hammer-screen gap.

[0006] The technical solution adopted by the utility model is: a hammer-type crusher with adjustable hammer-screen gap, comprising:

[0007] shell;

[0008] A screen, the screen is installed at the bottom of the shell, the surface of the screen is provided with screen holes, and the screen holes are used to screen the crushed material;

[0009] A distance adjusting component is installed in the shell, and the distance adjusting component is used to adjust the distance between the hammer screens. The distance adjusting component includes a rotating shaft inserted in the middle of the inner wall of the shell, a two-way push rod and a symmetrically installed hammer rod. The rotating shaft is fixedly sleeved on the outer middle part of the two-way push rod, and the hammer rod is fixedly installed on the telescopic end of the two-way push rod. A plurality of hammer pieces are arranged and installed on the hammer rod.

[0010] Furthermore, a power assembly is installed in the shell, and the power assembly is used for crushing materials.

[0011] Furthermore, the power assembly includes a motor fixedly mounted in the middle of the outer wall of the shell and a front plate and a rear plate located inside the shell, the front plate and the rear plate are fixedly connected to the output shaft of the motor and the rotating shaft respectively, two hammer rods are symmetrically mounted between the front plate and the rear plate, and two hammer pieces corresponding to the hammer pieces are arranged on the two hammer rods.

[0012] Furthermore, a limiting groove is provided on the side wall of the second hammer rod, and a limiting rod penetrating the limiting groove is fixedly mounted on the first hammer rod.

[0013] Furthermore, a shifting assembly is installed in the shell, and the shifting assembly is used to shift the material.

[0014] Furthermore, the toggle assembly includes a toggle plate, a telescopic rod fixedly mounted on the side wall of the rear plate, and a slide rod fixedly mounted on the side wall of the front plate, and both ends of the toggle plate are fixedly connected to the telescopic ends of the telescopic rod and the slide rod, respectively.

[0015] Furthermore, a feed hopper and a discharge plate located below the screen are respectively installed on the top and bottom of the shell.

[0016] The beneficial effects of the utility model are:

[0017] The utility model can realize the effect of automatically adjusting the distance between the hammer and the screen by setting the distance adjustment component, can automatically adjust the distance between the hammer and the screen according to the diameter of the required product, and can improve the applicability of the hammer mill.

[0018] Secondly, the utility model can achieve the effect of turning over the larger-sized materials sunk on the screen through the arrangement of the power component and the toggle component, and can lift up the large-volume materials sunk on the screen, so that the materials can be crushed more fully and the screen holes can be prevented from being blocked by the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from above;

[0021] Figure 3 It is a schematic diagram of the top view of the distance adjustment component and the power component of the utility model;

[0022] Figure 4 It is a left-side structural schematic diagram of the power assembly and the limiting groove of the utility model.

[0023] The markings in the figure are: 1. Shell; 2. Screen; 3. Screen hole; 4. Distance adjustment assembly; 401. Rotating shaft; 402. Two-way push rod; 403. Hammer rod one; 404. Hammer piece one; 5. Power assembly; 501. Motor; 502. Front plate; 503. Rear plate; 504. Hammer rod two; 505. Hammer piece two; 6. Limiting groove; 7. Limiting rod; 8. Toggle assembly; 801. Toggle plate; 802. Telescopic rod; 803. Sliding rod; 9. Feed hopper; 10. Discharge plate. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The following is combined with Figures 1-4 The utility model is further described.

[0027] To solve the problems existing in the background art, the present application proposes the following technical solution: a hammer mill with adjustable hammer-screen gap.

[0028] In the specific technical solution, it includes a housing 1, a screen 2 and a distance adjustment component 4;

[0029] As Figures 1-3 shown, the screen 2 is installed at the bottom of the housing 1. The screen 2 can prevent large pieces of materials from falling. Sieve holes 3 are provided on the surface of the screen 2, and the sieve holes 3 are used for screening crushed materials; the distance adjustment component 4 is installed in the housing 1, and the distance adjustment component 4 is used to adjust the distance between the hammer and the screen. The distance adjustment component 4 includes a rotating shaft 401 inserted in the middle of the inner wall of the housing 1, a double-headed push rod 402, and symmetrically installed first hammer rods 403. The rotating shaft 401 can fix the double-headed push rod 402. The double-headed push rod 402 can drive the first hammer rod 403 to move. The first hammer rod 403 can support the first hammer piece 404. The rotating shaft 401 is fixedly sleeved on the outer middle part of the double-headed push rod 402. The first hammer rod 403 is fixedly installed at the telescopic end of the double-headed push rod 402. A plurality of first hammer pieces 404 are arranged on the first hammer rod 403, and the first hammer pieces 404 can facilitate hitting the materials.

[0030] When the distance between the first hammer piece 404 and the screen 2 is large, the annular space between the first hammer piece 404 and the screen 2 is large. Larger-volume materials are likely to fall in the annular layer. The materials fall onto the screen 2, and the volume of the materials after crushing is relatively large particles. By starting the double-headed push rod 402 to drive the first hammer rod 403 to move, the two first hammer rods 403 move away from each other. The first hammer rod 403 moves towards the direction close to the screen 2. The first hammer rod 403 drives the first hammer piece 404 to move towards the direction close to the screen 2. The distance between the first hammer piece 404 and the screen 2 decreases, and the space of the annular layer between the screen 2 and the first hammer piece 404 becomes smaller. Larger-volume materials can rotate in the annular layer along with the first hammer piece 404, which facilitates the first hammer piece 404 to hit the materials again, facilitates the materials to be crushed more fully, and facilitates automatically adjusting the size of the crushed product according to needs.

[0031] As Figures 1-3 shown, a power component 5 is installed in the housing 1. The power component 5 is used for crushing materials. The power component 5 includes a motor 501 fixedly installed in the middle of the outer wall of the housing 1 and a front plate 502 and a rear plate 503 located inside the housing 1. The motor 501 can drive the front plate 502 to rotate. The front plate 502 and the rear plate 503 can support the second hammer rod 504. The front plate 502 and the rear plate 503 are respectively fixedly connected to the output shaft of the motor 501 and the rotating shaft 401. Second hammer rods 504 are symmetrically installed between the front plate 502 and the rear plate 503. The second hammer rods 504 can facilitate the installation of the second hammer pieces 505. A plurality of second hammer pieces 505 corresponding to the first hammer pieces 404 one by one are arranged on the second hammer rods 504, and the second hammer pieces 505 can crush materials.

[0032] The distance between the two hammer rods 504 remains unchanged, and the distance between the hammer pieces 505 on the two hammer rods 504 remains unchanged, which can prevent materials from falling between the two hammer rods 504. By starting the motor 501 to drive the front plate 502 to rotate, the front plate 502 drives the hammer rod 504 to rotate, the hammer rod 504 drives the hammer piece 505 and the rear plate 503 to rotate, the rear plate 503 drives the rotating shaft 401 to rotate, the rotating shaft 401 drives the two-way push rod 402 to rotate, the two-way push rod 402 drives the hammer rod 1 403 to rotate, the hammer rod 1 403 drives the hammer piece 1 404 to rotate, and the hammer piece 1 404 and the hammer piece 2 505 rotate synchronously, so that the materials poured into the shell 1 can be hammered and crushed.

[0033] like Figures 1-4 As shown, a limiting groove 6 is provided on the side wall of the second hammer rod 504, and a limiting rod 7 penetrating the limiting groove 6 is fixedly installed on the first hammer rod 403. The limiting groove 6 can limit the limiting rod 7, and the limiting rod 7 can fix the first hammer rod 403. The limiting rod 7 can drive the connection between the first hammer rod 403 and the second hammer rod 504, which is beneficial to the stability of the first hammer rod 403.

[0034] like Figure 2 As shown, a toggle assembly 8 is installed in the shell 1, and the toggle assembly 8 is used to toggle materials. The toggle assembly 8 includes a toggle plate 801, a telescopic rod 802 fixedly mounted on the side wall of the rear plate 503, and a slide bar 803 fixedly mounted on the side wall of the front plate 502. The toggle plate 801 can toggle materials that fall onto the screen 2, the telescopic rod 802 can drive the toggle plate 801 to rise and fall, and the slide bar 803 can support the end of the toggle plate 801 away from the telescopic rod 802 to improve the stability of the toggle plate 801, and the two ends of the toggle plate 801 are fixedly connected to the telescopic ends of the telescopic rod 802 and the slide bar 803 respectively.

[0035] When the distance between the hammer 404 and the screen 2 is large, large pieces of material are easy to fall onto the screen 2. By starting the telescopic rod 802, the paddle plate 801 is driven to descend, and the paddle plate 801 drives the slide bar 803 to extend, and the paddle plate 801 is close to the screen 2. When the rear plate 503 and the front plate 502 rotate, the telescopic rod 802 and the slide bar 803 are driven to rotate at the same time respectively. The telescopic rod 802 and the slide bar 803 drive the paddle plate 801 to rotate, and the paddle plate 801 can pry large pieces of material on the screen 2. After the material is lifted up, it can contact the hammer 404, which is convenient for the material to be hit again.

[0036] like Figure 1 As shown, a feed hopper 9 and a discharge plate 10 located below the screen 2 are respectively installed on the top and bottom of the shell 1. The feed hopper 9 can conveniently transport materials into the shell 1, and the products passing through the screen holes 3 fall onto the discharge plate 10, which can facilitate the collection of the products.

[0037] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the attached drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hammer mill with adjustable gap between hammer and screen, characterized in that: include: A housing (1); a screen (2), the screen (2) being mounted on the bottom of the housing (1); a surface of the screen (2) being provided with screen holes (3), the screen holes (3) being used for screening the crushed material; A distance adjusting component (4) is installed in the housing (1), and is used to adjust the distance between the hammer screens. The distance adjusting component (4) comprises a rotating shaft (401) inserted in the middle of the inner wall of the housing (1), a bidirectional push rod (402), and a symmetrically installed hammer rod (403), wherein the rotating shaft (401) is fixedly sleeved on the outer middle part of the bidirectional push rod (402), the hammer rod (403) is fixedly installed on the telescopic end of the bidirectional push rod (402), and a plurality of hammer pieces (404) are arranged on the hammer rod (403).

2. A hammer mill with adjustable hammer-screen gap according to claim 1, characterized in that: A power component (5) is installed in the housing (1), and the power component (5) is used to crush materials.

3. A hammer mill with adjustable hammer-screen gap according to claim 2, characterized in that: The power assembly (5) comprises a motor (501) fixedly mounted on the middle of the outer wall of the housing (1), and a front plate (502) and a rear plate (503) located inside the housing (1); the front plate (502) and the rear plate (503) are fixedly connected to the output shaft of the motor (501) and the rotating shaft (401) respectively; a second hammer rod (504) is symmetrically mounted between the front plate (502) and the rear plate (503); and two hammer pieces (505) corresponding to the first hammer piece (404) are arranged on the second hammer rod (504).

4. The hammer mill with adjustable hammer-screen gap according to claim 3, characterized in that: A limiting groove (6) is provided on the side wall of the second hammer rod (504), and a limiting rod (7) penetrating into the limiting groove (6) is fixedly mounted on the first hammer rod (403).

5. The hammer mill with adjustable hammer-screen gap according to claim 3, characterized in that: A shifting assembly (8) is arranged in the housing (1), and the shifting assembly (8) is used to shift materials.

6. The hammer mill with adjustable hammer-screen gap according to claim 5, characterized in that: The shifting assembly (8) comprises a shifting plate (801), a telescopic rod (802) fixedly mounted on the side wall of the rear plate (503), and a sliding rod (803) fixedly mounted on the side wall of the front plate (502), wherein two ends of the shifting plate (801) are respectively fixedly connected to the telescopic ends of the telescopic rod (802) and the sliding rod (803).

7. The hammer mill with adjustable hammer-screen gap according to claim 1, characterized in that: A feed hopper (9) and a discharge plate (10) located below the screen (2) are respectively mounted on the top and bottom of the housing (1).

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