Cement fineness negative pressure sieve analyzer convenient to clean

Abstract

The utility model discloses a cement fineness negative pressure sieve analysis appearance convenient to clean relates to cement sieve analysis technical field, and it is designed to solve the problem of long time caused by the manual cleaning of the larger size cement powder product screened out by the existing, which is not conducive to improve the convenience of sieve analysis appearance use, and is not conducive to reducing the workload of artificial, and its technical scheme main points are: including fixed hopper, sieve hopper and adjustable unloading assembly, and the sieve hopper is fixedly installed in the fixed hopper, and the adjustable unloading assembly is installed below the fixed hopper and the sieve hopper, and the adjustable unloading assembly includes self -locking motor and rotating seat. A kind of cement fineness negative pressure sieve analysis appearance convenient to clean of the utility model can automatically clean the larger size cement powder product screened out, process is relatively simple and time is shorter, which is conducive to improving the convenience of sieve analysis appearance use, while being conducive to reducing the workload of artificial, greatly improve the efficiency of cement sieve analysis.

Description

Technical Field

[0001] This utility model relates to the field of cement screening technology, and more specifically to a negative pressure screening instrument. It relates to a cement fineness negative pressure screening instrument that is easy to clean. Background Technology

[0002] Cement is a powdery hydraulic inorganic binder that can be used as a building material. The fineness of cement refers to the overall coarseness of cement particles. In order to test the fineness of cement, a cement fineness negative pressure sieve analyzer is needed. The cement fineness negative pressure sieve analyzer can sieve and analyze cement powder, which can help understand the impact of cement fineness on cement performance and make it easier for users to purchase cement according to their needs.

[0003] For example, Chinese Patent Announcement CN216900100U discloses a cement fineness negative pressure sieve analyzer, including a support frame. A mounting box is located at the top of the support frame. A dust collection box is located on the inner bottom wall of the mounting box. A cyclone separator is connected to the top of the dust collection box. A connecting hopper extending into the top of the mounting box is located at the top of the mounting box. A connecting pipe fixedly connected to the cyclone separator is located at the bottom of the connecting hopper. A sieve extending to the top of the connecting hopper is located inside the connecting hopper. A limiting plate fitting against the top of the connecting hopper is located on the outer side of the sieve. Support sleeves are located on both the left and right sides of the bottom of the limiting plate. This cement fineness negative pressure sieve analyzer effectively prevents cement powder from clogging the sieve mesh, improving the accuracy and efficiency of test results. It also facilitates user disassembly and cleaning of the sieve inside the negative pressure sieve analyzer, making it convenient for users.

[0004] Existing technical solutions use vibration to prevent cement powder from clogging the sieve mesh and improve the accuracy and efficiency of test results. However, in actual experiments, it has been found that this solution requires manual cleaning of the larger-sized cement powder products separated by sieving. This process is cumbersome and time-consuming, which is not conducive to improving the ease of use of the sieve analyzer and reducing manual workload. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cement fineness negative pressure sieve analyzer that is easy to clean. This solves the problem that existing methods require manual cleaning of the larger-sized cement powder products after sieving, which is a cumbersome and time-consuming process that does not improve the ease of use of the sieve analyzer or reduce manual workload.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cement fineness negative pressure sieve analyzer that is easy to clean, comprising a fixed hopper, a screening hopper, and an adjustable feeding assembly. The screening hopper is fixedly installed inside the fixed hopper, and the adjustable feeding assembly is installed below the fixed hopper and the screening hopper. The adjustable feeding assembly includes a self-locking motor and a rotating base. The output shaft of the self-locking motor is fixedly connected to the center of the bottom surface of the rotating base. The rotating base has a first through hole and a second through hole. A first feeding pipe is installed below the rotating base and communicates with the first through hole. A second feeding pipe is installed on the side wall of the rotating base and communicates with the second through hole.

[0007] By adopting the above technical solution, through hole one is located directly below the fixed hopper and the screening hopper. When cement is screened inside the screening hopper, the smaller cement powder particles enter between the screening hopper and the fixed hopper through the screening hopper, and then fall from between the fixed hopper and the screening hopper into through hole one. Then, they fall through the feed pipe and are collected. When the cement inside the screening hopper is fully screened, the larger cement powder particles are retained inside the screening hopper. By starting the self-locking motor, the rotating seat is driven to rotate. The rotating seat rotates 180 degrees in the horizontal plane. At this time, through hole two is located directly below the screening hopper. The top of through hole two is connected to the bottom of the screening hopper, and the lower end of through hole two is aligned and connected to feed pipe two. By moving the center rod upward, the piston is moved upward, and the piston can be pulled out from below the screening hopper. The larger cement powder particles inside the screening hopper can fall from the screening hopper and enter the feed pipe two through through hole two, which can collect the larger cement powder particles.

[0008] The present invention is further configured such that: the screening hopper is equipped with a oscillating and turning component, which is used to turn and vibrate the cement.

[0009] The present invention is further configured such that: the oscillating and agitating assembly includes a linear cylinder, a servo motor, a central rod, and a stirring rod; the telescopic end of the linear cylinder is fixedly connected to the servo motor; the output shaft of the servo motor is fixedly connected to the central rod; the stirring rod is fixedly sleeved on the outside of the central rod; a rubber hammer is fixedly mounted on the central rod; a baffle is mounted on one side of the rubber hammer; the baffle is fixedly connected to the inner sidewall of the screening hopper; a piston is sleeved below the central rod; the piston slides through the center part of the lower part of the screening hopper; and the central rod, the stirring rod, and the rubber hammer are all located inside the screening hopper.

[0010] The present invention is further configured such that: the fixed bucket is fixedly equipped with a shell, the self-locking motor is fixedly installed below the shell, the rotating seat is rotatably installed inside the shell, the first feeding pipe is fixedly installed below the shell, and the second feeding pipe is fixedly inserted through the bottom of the shell.

[0011] The present invention is further configured such that: a top cover is installed above the outer shell, the top cover is located above the screening hopper, the fixed end of the linear cylinder is fixedly installed above the top cover, and the central rod passes through the middle part of the top cover.

[0012] The present invention is further configured such that an air pump is fixedly installed on the top cover.

[0013] In summary, this utility model has the following beneficial effects: it can achieve the effect of automatically cleaning the cement powder products with larger particle sizes after screening. The cleaning process is relatively simple and short, which helps to improve the convenience of using the screening instrument, while also reducing the amount of manual labor and greatly improving the efficiency of cement screening. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of this embodiment;

[0015] Figure 2 This is a top view of the adjustable feeding assembly and the oscillating and flipping assembly in this embodiment;

[0016] Figure 3 This is a cross-sectional structural diagram of the adjustable feeding component and the oscillating and flipping component in this embodiment;

[0017] Figure 4 This is a front view structural diagram of this embodiment.

[0018] Figure descriptions: 1. Fixed hopper; 2. Screening hopper; 3. Adjustable feeding assembly; 301. Self-locking motor; 302. Rotating seat; 303. Feeding pipe one; 304. Feeding pipe two; 4. Through hole one; 5. Through hole two; 6. Vibrating and turning assembly; 601. Linear cylinder; 602. Servo motor; 603. Center rod; 604. Stirring rod; 605. Rubber hammer; 606. Baffle; 607. Piston; 7. Outer shell; 8. Top cover; 9. Air pump. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0021] like Figure 1-3 As shown, a cement fineness negative pressure sieve analyzer that is easy to clean includes a fixed hopper 1, a screening hopper 2, and an adjustable feeding assembly 3. The screening hopper 2 is fixedly installed inside the fixed hopper 1. The adjustable feeding assembly 3 is installed below the fixed hopper 1 and the screening hopper 2. The adjustable feeding assembly 3 includes a self-locking motor 301 and a rotating base 302. The self-locking motor 301 can drive the rotating base 302 to rotate. The rotation of the rotating base 302 can adjust the positions of through hole 4 and through hole 5. The output shaft of the self-locking motor 301 is aligned with the center of the bottom surface of the rotating base 302. The rotating seat 302 is fixedly connected and has a through hole 4 and a through hole 5. The through hole 4 facilitates the falling of cement with smaller particle size, and the through hole 5 facilitates the falling of cement with larger particle size. A feeding pipe 303 is installed below the rotating seat 302. The feeding pipe 303 facilitates the feeding of cement with smaller particle size. The feeding pipe 303 is connected to the through hole 4. A feeding pipe 304 is installed on the side wall of the rotating seat 302. The feeding pipe 304 facilitates the feeding of cement with larger particle size. The feeding pipe 304 is connected to the through hole 5.

[0022] like Figure 3 As shown, at this time, through hole 4 is located directly below the fixed hopper 1 and the screening hopper 2. When cement is screened inside the screening hopper 2, the smaller cement powder particles enter between the screening hopper 2 and the fixed hopper 1 through the screening hopper 2, and then fall from between the fixed hopper 1 and the screening hopper 2 into the through hole 4. They are then collected by falling through the feed pipe 303. When the cement inside the screening hopper 2 is fully screened, the larger cement powder particles are retained inside the screening hopper 2. The self-locking motor 301 is activated, driving the rotating seat 302 to rotate. The rotating seat 302 rotates 180 degrees in the horizontal plane, as shown... Figure 1 As shown, at this time, the second through hole 5 is located directly below the screening hopper 2. The top of the second through hole 5 is connected to the bottom of the screening hopper 2, and the lower end of the second through hole 5 is aligned and connected to the second feed pipe 304. The piston 607 is moved upward by the upward movement of the central rod 603. The piston 607 can be pulled out from below the screening hopper 2. The cement powder with larger particle size inside the screening hopper 2 can fall from the screening hopper 2 and enter the second feed pipe 304 through the second through hole 5, which can collect the cement powder with larger particle size.

[0023] like Figure 1-4As shown, the screening hopper 2 is equipped with a vibrating and agitating assembly 6, which is used to agitate and vibrate the cement. The vibrating and agitating assembly 6 includes a linear cylinder 601, a servo motor 602, a central rod 603, and a stirring rod 604. The linear cylinder 601 can drive the servo motor 602 to rise and fall, the servo motor 602 can drive the central rod 603 to rotate, the central rod 603 can support the stirring rod 604, and the stirring rod 604 can agitate the cement inside the screening hopper 2. The telescopic end of the linear cylinder 601 is fixedly connected to the servo motor 602, and the output shaft of the servo motor 602 is fixedly connected to the central rod 603. A stirring rod 604 is fixedly sleeved on the outside of a central rod 603. A rubber hammer 605 is fixedly mounted on the central rod 603. When the rubber hammer 605 rotates, it can strike the baffle 606. A baffle 606 is installed on one side of the rubber hammer 605. The baffle 606 can collide with the rubber hammer 605. The baffle 606 is fixedly connected to the inner side wall of the screening hopper 2. A piston 607 is sleeved below the central rod 603. The piston 607 can seal the bottom of the screening hopper 2. The piston 607 slides through the center part of the lower part of the screening hopper 2. The central rod 603, stirring rod 604 and rubber hammer 605 are all located inside the screening hopper 2.

[0024] After cement is poured into the screening hopper 2, the servo motor 602 is started, driving the central rod 603 to rotate. The central rod 603 drives the stirring rod 604 to rotate. The rotation of the stirring rod 604 agitates the cement inside the screening hopper 2, accelerating the passage of smaller cement powder through the hopper 2. Simultaneously, the rotation of the central rod 603 drives the rubber hammer 605 to rotate. The rubber hammer 605 strikes the baffle 606. Because the rubber hammer 605 is flexible, it bends after striking the baffle 606 and passes over it. The system can perform the next round of impacts. After the baffle 606 is hit, it can vibrate the screening hopper 2, which can shake off the cement powder in the hole of the screening hopper 2 and prevent the cement powder from clogging the screening hopper 2. After the cement powder is screened, the linear cylinder 601 is started to drive the servo motor 602 to rise. The servo motor 602 drives the center rod 603 to rise. The center rod 603 drives the piston 607 to rise. The piston 607 is pulled out of the screening hopper 2. The cement powder with greater force that is retained in the screening hopper 2 can fall down into the through hole 2 5.

[0025] like Figure 1 and Figure 4As shown, the fixed bucket 1 is externally fixedly equipped with a shell 7, which can fix the fixed bucket 1. The self-locking motor 301 is fixedly installed below the shell 7, which can fix the self-locking motor 301. The rotating seat 302 is rotatably installed inside the shell 7, which can support the rotating seat 302. The first feeding pipe 303 is fixedly installed below the shell 7, which can fix the first feeding pipe 303. The second feeding pipe 304 is fixedly inserted through the bottom of the shell 7, which can fix the second feeding pipe 304.

[0026] like Figure 1 and Figure 4 As shown, a top cover 8 is installed on the top of the outer shell 7. The top cover 8 can seal the top of the fixed hopper 1 and the outer shell 7. The top cover 8 is located above the screening hopper 2. The fixed end of the linear cylinder 601 is fixedly installed on the top cover 8. The top cover 8 can fix the fixed end of the linear cylinder 601. The center rod 603 passes through the middle part of the top cover 8.

[0027] like Figure 1 and Figure 4 As shown, an air pump 9 is fixedly installed on the top cover 8. When the stirring rod 604 agitates the cement powder inside the screening hopper 2, the air pump 9 is activated to blow air into the screening hopper 2 inside the outer shell 7. The cement powder with smaller force can pass through the screening hopper 2 with the airflow and enter the space between the screening hopper 2 and the fixed hopper 1, which can accelerate the screening of cement powder.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cement fineness negative pressure sieve analyzer that is easy to clean, characterized in that: The device includes a fixed hopper (1), a screening hopper (2), and an adjustable feeding assembly (3). The screening hopper (2) is fixedly installed inside the fixed hopper (1). The adjustable feeding assembly (3) is installed below the fixed hopper (1) and the screening hopper (2). The adjustable feeding assembly (3) includes a self-locking motor (301) and a rotating seat (302). The output shaft of the self-locking motor (301) is fixedly connected to the center of the bottom surface of the rotating seat (302). The rotating seat (302) has a through hole 1 (4) and a through hole 2 (5). A feeding pipe 1 (303) is installed below the rotating seat (302) and communicates with the through hole 1 (4). A feeding pipe 2 (304) is installed on the side wall of the rotating seat (302) and communicates with the through hole 2 (5).

2. The easy-to-clean cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: The screening hopper (2) is equipped with a oscillating and turning component (6), which is used to turn and vibrate the cement.

3. The easy-to-clean cement fineness negative pressure sieve analyzer according to claim 2, characterized in that: The oscillating and agitating assembly (6) includes a linear cylinder (601), a servo motor (602), a central rod (603), and a stirring rod (604). The telescopic end of the linear cylinder (601) is fixedly connected to the servo motor (602), and the output shaft of the servo motor (602) is fixedly connected to the central rod (603). The stirring rod (604) is fixedly sleeved on the outside of the central rod (603), and a rubber bushing is fixedly mounted on the central rod (603). A rubber hammer (605) is provided with a baffle (606) on one side. The baffle (606) is fixedly connected to the inner side wall of the screening hopper (2). A piston (607) is sleeved below the central rod (603). The piston (607) slides through the center part of the lower part of the screening hopper (2). The central rod (603), the stirring rod (604) and the rubber hammer (605) are all located inside the screening hopper (2).

4. The easy-to-clean cement fineness negative pressure sieve analyzer according to claim 3, characterized in that: The fixed bucket (1) is fixedly equipped with a shell (7), the self-locking motor (301) is fixedly installed below the shell (7), the rotating seat (302) is rotatably installed inside the shell (7), the first feeding pipe (303) is fixedly installed below the shell (7), and the second feeding pipe (304) is fixedly installed through the bottom of the shell (7).

5. A cement fineness negative pressure sieve analyzer that is easy to clean according to claim 4, characterized in that: A top cover (8) is installed above the outer shell (7). The top cover (8) is located above the screening hopper (2). The fixed end of the linear cylinder (601) is fixedly installed above the top cover (8). The central rod (603) passes through the middle part of the top cover (8).

6. The easy-to-clean cement fineness negative pressure sieve analyzer according to claim 5, characterized in that: An air pump (9) is fixedly installed on the top cover (8).

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