Pulverizer

Abstract

The utility model relates to the technical field of material crushing equipment, and particularly discloses a crusher which comprises a crushing chamber, the crushing chamber is provided with a discharge port, a screen is arranged at the bottom of the discharge port, a scraper is arranged on the outer wall, close to the discharge port, of the crushing chamber, and the scraper is in sliding connection with the outer wall of the crushing chamber. The scraping plate is arranged on the outer wall, close to the discharge port, of the crushing chamber, and the scraping plate is in sliding connection with the outer wall of the crushing chamber, so that the scraping plate can slide to the position below the screen at the discharge port to scrape materials blocked on the screen, and the crushing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material crushing equipment, in particular to a crusher. Background Art

[0002] A pulverizer is a mechanical device that crushes large solid raw materials into required sizes. Its application range is very wide, covering many industries such as chemical, petrochemical, machinery, shipbuilding, automobile, electronics, clothing, coatings, engineering plastics, rubber, etc. The pulverization process usually involves the simultaneous action of several external forces, such as impact, shearing, friction, etc., to achieve the purpose of reducing the size of the material. The working principle of a pulverizer is usually to use a high-speed rotating impeller or hammer to subject the material to strong impact, collision, shearing and friction in the machine, so that the material is crushed into the required size.

[0003] However, during the crushing process of the crusher, the screen at the discharge port is often blocked. Once the screen is blocked, it is easy to cause excessive accumulation of materials in the crushing chamber, resulting in reduced crushing efficiency, and even damage to the equipment in severe cases. Utility Model Content

[0004] In order to solve the problem in the prior art that the screen of the material discharge port is easily blocked, the utility model provides a pulverizer.

[0005] The technical solution adopted by the utility model is: a pulverizer comprises a pulverizing chamber, the pulverizing chamber has a material discharge port, a screen is arranged at the bottom of the material discharge port, a scraper is arranged on the outer wall of the pulverizing chamber close to the material discharge port, and the scraper is slidably connected to the outer wall of the pulverizing chamber.

[0006] Furthermore, the scraper is arc-shaped, and the arc bending direction of the scraper is consistent with the arc bending direction of the screen.

[0007] Furthermore, the scraper is provided with a plurality of first through holes, and the diameters of the plurality of first through holes are larger than the sieve hole diameters of the sieve.

[0008] Furthermore, the axes of the plurality of first through holes are consistent with the axes of the sieve holes of the sieve.

[0009] Furthermore, the scraper is in the shape of a rectangular box with a hollow chamber, wherein the first through hole is provided on the side of the scraper facing the screen; the scraper is also provided with a second through hole, which is connected to an air compressor to pass compressed air into the hollow chamber.

[0010] Furthermore, the projection surface of the screen in the normal direction is smaller than or equal to the projection surface of the scraper in the normal direction.

[0011] Furthermore, on the outer wall of the pulverizing chamber near the discharge port, a sliding groove adapted to the scraper is opened along the circumferential direction of the outer wall.

[0012] Furthermore, the scraper is connected to a gripping rod, and a groove matching the gripping rod is formed on the outer wall of the crushing chamber.

[0013] The beneficial effect of the utility model is that a scraper is arranged on the outer wall of the pulverizing chamber near the discharge port, and the scraper is slidably connected to the outer wall of the pulverizing chamber, so that the scraper can slide to the bottom of the screen at the discharge port to scrape off the material blocked on the screen, thereby improving the pulverizing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall appearance of a pulverizer in this application;

[0015] Figure 2 is a schematic diagram of a crushing chamber;

[0016] Figure 3 It is a schematic diagram of the structure of the scraper;

[0017] Figure 4 It is a schematic diagram of the position relationship between the crushing chamber and the scraper;

[0018] Figure 5 It is a schematic diagram of the combination of the scraper and the crushing chamber.

[0019] Figure numerals: 1. crushing chamber, 11. discharge port, 2. screen, 21. screen hole, 3. scraper, 31. first through hole, 32. second through hole, 33. grip rod, 4. slide groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0021] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other examples, in order to avoid obscuring the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0022] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.

[0024] The following is combined with Figure 1-5 The embodiments of the present utility model are described in detail.

[0025] Example 1

[0026] The utility model relates to a pulverizer, comprising a pulverizing chamber 1, wherein the pulverizing chamber 1 is provided with a discharge port 11, a screen 2 is arranged at the bottom of the discharge port 11, a scraper 3 is arranged on the outer wall of the pulverizing chamber 1 close to the discharge port 11, and the scraper 3 is slidably connected with the outer wall of the pulverizing chamber 1.

[0027] Specifically, the present application relates to a pulverizer, comprising a pulverizing chamber 1, the front of which is provided with a feed port, the bottom of which is provided with a discharge port 11, and a screen 2 is provided at the bottom of the discharge port 11, the screen 2 having a plurality of sieve holes 21, so that the pulverized material falls through the sieve holes 21 of the screen 2 into a material receiving device below the discharge port 11.

[0028] It should be noted that the dust collection chamber of the pulverizer, the base for installing the pulverizer and the dust blocking chamber located at the discharge port 11 are all prior art, such as Figure 1 As shown, therefore, the specific structure and connection relationship will not be described here in detail, but only the technical problem to be solved by the present application, that is, how to solve the problem of blockage of the sieve holes 21 of the sieve 2 at the discharge port 11 will be described in detail.

[0029] In order to clear the screen 2 at the discharge port 11, Figure 5 As shown, a scraper 3 is arranged on the outer wall of the crushing chamber 1 near the discharge port 11, and the scraper 3 is slidably connected with the outer wall of the crushing chamber 1. The sliding connection here can be a slide groove on the outer wall, and a slider matching the slide groove is arranged on the scraper to achieve the sliding connection, or a convex block is arranged on the outer wall, and a groove matching the convex block is arranged on the scraper, which can also achieve the sliding connection, so that the scraper 3 can slide from the outer wall of the crushing chamber 1 to the bottom of the screen 2 and abut against it. When in use, the scraper 3 is first slid to the bottom of the screen 2, and then the scraper 3 is reciprocated. Since the scraper 3 abuts against the screen 2, during the process of reciprocating sliding of the scraper 3, the scraper 3 scrapes the screen 2 back and forth, and then clears the material blocked in the screen hole 21 to a certain extent. The scraper 3 here can be a plate of the same size as the screen 2, or a plate with a length and / or width smaller than the screen 2, and the above technical solution can be realized.

[0030] Example 2

[0031] This embodiment is an improvement made on the basis of the embodiment 1, and the difference lies in that the scraper 3 is arc-shaped, and the arc bending direction of the scraper 3 is consistent with the arc bending direction of the screen 2.

[0032] Specifically, in order to further scrape off the material blocked in the sieve hole 21 and improve the crushing efficiency, as Figure 2 As shown, the scraper 3 is arranged in an arc shape, and the arc bending direction of the scraper 3 is consistent with the arc bending direction of the screen 2. Therefore, when scraping off the material blocked on the screen 2, the scraper 3 can be completely fitted with the screen 2 to scrape the screen 2 in all directions.

[0033] Example 3

[0034] This embodiment is an improvement made on the basis of the embodiment 1, and the difference lies in that a plurality of first through holes 31 are provided on the scraper 3 , and the diameters of the plurality of first through holes 31 are larger than the apertures of the sieve holes 21 of the sieve 2 .

[0035] Specifically, when the plate-shaped scraper 3 scrapes the material on the screen 2, the material keeps falling from the screen 2 as the grinder is crushing the material. Therefore, the fallen material will be retained on the scraper 3. When the scraper 3 slides out from the discharge port 11, part of the material will be taken out, which causes a waste of material and even pollutes the environment when the material enters the air.

[0036] Therefore, in order to avoid the above phenomenon, further, Figure 2As shown, a plurality of first through holes 31 are provided on the scraper 3, and the diameters of the plurality of first through holes 31 are larger than the apertures of the sieve holes 21 of the sieve 2, so that when the scraper 3 scrapes the sieve 2, the material falling from the sieve 2 falls directly from the first through holes 31 into the collecting device below without being carried out.

[0037] As a variation, a plurality of parallel through grooves may be provided on the scraper 3, and the width of the plurality of through grooves is greater than the aperture of the sieve holes 21 of the screen 2. The through grooves may be arranged along the length direction of the scraper 3 or along the width direction of the scraper 3, and both may realize scraping the screen 2.

[0038] Example 4

[0039] This embodiment is an improvement made on the basis of the embodiment 3, the difference being that the projection surface of the screen 2 in the normal direction is smaller than or equal to the projection surface of the scraper 3 in the normal direction.

[0040] Specifically, in order to further make the material falling from the screen 2 directly fall from the first through hole 31 into the collecting device below, the projection surface of the screen 2 in the normal direction is smaller than or equal to the projection surface of the scraper 3 in the normal direction. In this way, when the scraper 3 moves to the bottom of the screen 2 and overlaps with the screen 2, the first through hole 31 on the scraper 3 can completely blow the material on the screen 2 blocked in the screen hole 21 back into the crushing chamber without affecting the crushing efficiency.

[0041] Example 5

[0042] This embodiment is an improvement made on the basis of Embodiment 4, and the difference lies in that the scraper 3 is in the shape of a rectangular box with a hollow chamber, wherein the first through hole 31 is provided on the side of the scraper 3 facing the screen 2; the scraper 3 is also provided with a second through hole 32, and the second through hole 32 is connected to an air compressor for passing compressed air into the hollow chamber.

[0043] Specifically, in order to further scrape off the material blocked in the sieve hole 21 and improve the crushing efficiency, as Figure 2 As shown, the scraper 3 is in the shape of a rectangular box with a hollow chamber, and the rectangular box-shaped scraper 3 is the same size as the screen 2. The side close to the screen 2 is the fitting surface, and the side away from the screen 2 is the back surface, and a plurality of first through holes 31 are all provided on the fitting surface. In addition, the scraper 3 is also provided with second through holes 32, which can be provided on any side except the fitting surface. In this application, it is preferably provided on one side of the scraper 3 in the width direction, and more specifically, provided on Figure 2 and Figure 4The second through hole 32 is on the right side of the pulverizing chamber 1. This is because the scraper 3 in the present application is arranged on the right side of the pulverizing chamber 1. If the second through hole 32 is opened on the left side, the air pipe will cause certain obstruction to the sliding scraper 3 during the sliding process of the scraper 3. If the second through hole 32 is opened on the back side, it will also be interfered by the dust-proof chamber below the discharge port 11. Therefore, in summary, the second through hole 32 is opened on the right side. Since the second through hole 32 is connected to the air compression device through a pipeline, the compressed air can enter the hollow chamber through the second through hole 32.

[0044] The compressed air entering the hollow chamber overflows from the first through hole 31, since the entire scraper 3 is in a sealed state except for the first through hole 31 on the fitting surface. Since the fitting surface is arranged opposite to the screen 2, the compressed air is ejected from the first through hole 31 and blows the screen 2, and finally blows the material blocked in the sieve holes 21 of the screen 2 back into the crushing chamber, thereby unblocking the screen 2.

[0045] In addition, using compressed air to spray the screen 2 also has the purpose of cooling the temperature in the grinding chamber. For example, too high a temperature may affect the medicinal properties of some Chinese medicines; especially for some Chinese medicines containing volatile components or susceptible to thermal decomposition, such as mint, basil, lavender, etc., high temperature may cause the volatilization or degradation of their active ingredients, thereby affecting the efficacy. Compressed air also has the effect of cooling these materials.

[0046] It should be noted that, since the existing pulverizer is equipped with a dust suction device, the dust suction device removes the material dust generated during the pulverization process. The dust suction device also often uses compressed air to generate negative pressure to achieve dust suction. Therefore, the compressed air equipment in this application is directly the compressed air equipment of the dust suction device, and there is no need to equip it separately.

[0047] Example 6

[0048] This embodiment is an improvement made on the basis of Embodiment 5, the difference being that the second through hole 32 is located on the side of the scraper 3 in the width direction and on the side of the scraper 3 away from the discharge port 11 .

[0049] Specifically, since the second through hole 32 is connected to the compressed air device, the compressed air is introduced into the scraper 3, and then the compressed air is ejected from the first through hole 31 on the scraper 3 and sprayed to the mesh 21 on the screen 2 opposite to the first through hole 31, and the material in the mesh 21 is blown back into the crushing chamber 1. Therefore, Figure 2 and Figure 4As shown, if the second through hole 32 is opened on the left side, the air pipe will cause certain obstruction to the sliding scraper 3 during the sliding process of the scraper 3, and if the second through hole 32 is opened on the back surface of the scraper 3, it will also be disturbed by the dust barrier chamber below the discharge port 11. Therefore, in summary, the second through hole 32 is opened on the right side, that is, the second through hole 32 is opened on the side of the scraper 3 in the width direction, and on the side of the scraper 3 away from the discharge port 11.

[0050] Example 7

[0051] This embodiment is an improvement made on the basis of the embodiment 6, and the difference lies in that a slide groove 4 adapted to the scraper 3 is provided on the outer wall of the crushing chamber 1 near the discharge port 11 along the circumferential direction of the outer wall.

[0052] Specifically, in order to realize the free sliding of the scraper 3 on the outer wall of the crushing chamber 1, Figure 2 and Figure 4 As shown, a chute 4 adapted to the scraper 3 is provided on the outer wall of the pulverizing chamber 1 near the discharge port 11 along the circumferential direction of the outer wall, that is, the scraper 3 can be accommodated in the groove. It should be noted that, since the scraper 3 is provided with a second through hole 32, the scraper 3 is actually partially accommodated in the groove, that is, the second through hole 32 is partially located outside the groove. Of course, as an improvement of the present application, the scraper 3 can also be completely accommodated in the groove. In this case, a through hole can be provided in the circumferential direction of the outer wall of the entire pulverizing chamber 1, and a pipeline connected to the compressed air equipment is arranged in the through hole; or a through hole docking with the second through hole 32 is provided on the outer wall of the pulverizing chamber 1. Similarly, the through hole is provided with a pipeline connected to the compressed air equipment, and compressed air can also be introduced into the vacuum chamber of the scraper 3.

[0053] When in use, the scraper 3 is pushed, and the scraper 3 slides in the chute 4 toward the discharge port 11, and finally abuts against the screen 2 at the discharge port 11, and then the compressed air device is started to fill the hollow chamber of the scraper 3 with compressed air, and the compressed air is then blown toward the sieve holes 21 of the screen 2 through the first through hole 31, thereby blowing the materials blocked in the sieve holes 21 back into the crushing chamber 1, and then the scraper 3 is slid back from the discharge port 11 to the chute 4.

[0054] Example 8

[0055] This embodiment is an improvement made on the basis of the embodiment 7, the difference being that the scraper 3 is connected to a gripping rod 33 , and a groove matching the gripping rod 33 is formed on the outer wall of the crushing chamber 1 .

[0056] Specifically, in order to facilitate pushing the scraper 3 and fixing the scraper 3 on the outer wall of the crushing chamber 1, as shown in FIG. Figure 2-Figure 4As shown, a gripping rod 33 is also connected to the scraper 3. The gripping rod 33 can be one and arranged at one end of the scraper 3 along the width direction, or two and arranged at both ends of the scraper 3 along the width direction. A groove matching the gripping rod 33 is provided on the outer wall of the crushing chamber 1, so that when the scraper 3 is not in use, the gripping rod 33 can be placed in the groove, which not only prevents the scraper 3 from sliding randomly on the outer wall of the crushing chamber, but also makes the appearance of the entire device beautiful.

[0057] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A pulverizer, comprising a pulverizing chamber, wherein the pulverizing chamber has a discharge port, characterized in that: A screen is arranged at the bottom of the discharge port, and a scraper is arranged on the outer wall of the crushing chamber close to the discharge port, and the scraper is slidably connected with the outer wall of the crushing chamber.

2. The pulverizer according to claim 1, characterized in that The scraper is arc-shaped, and the arc bending direction of the scraper is consistent with the arc bending direction of the screen.

3. The pulverizer according to claim 1, characterized in that The scraper plate is provided with a plurality of first through holes, and the diameters of the plurality of first through holes are larger than the sieve hole diameters of the sieve.

4. The pulverizer according to claim 3, characterized in that The projection surface in the normal direction of the screen is smaller than or equal to the projection surface in the normal direction of the scraper.

5. The pulverizer according to claim 4, characterized in that The scraper is in the shape of a rectangular box with a hollow chamber, wherein the first through hole is provided on the side of the scraper facing the screen; the scraper is also provided with a second through hole, which is connected to an air compressor and is used to pass compressed air into the hollow chamber.

6. The pulverizer according to claim 5, characterized in that The second through hole is located on a side surface of the scraper in a width direction and on a side surface of the scraper away from the discharge port.

7. The pulverizer according to claim 6, characterized in that On the outer wall of the pulverizing chamber near the discharge port, a sliding groove adapted to the scraper is opened along the circumferential direction of the outer wall.

8. The pulverizer according to claim 7, characterized in that The scraper is connected with a gripping rod, and a groove matching the gripping rod is formed on the outer wall of the crushing chamber.

Images