Adjustable sampling head of belt middle sampler

Abstract

The utility model discloses an adjustable sampling head of a belt middle sampler, which comprises a belt support frame, a transmission shaft, a sampling structure and an adjusting component, the belt support frame comprises two support arms which are oppositely arranged, the transmission shaft is rotatably arranged on the two support arms, the sampling structure comprises a shifting frame, a telescopic frame and a scraper, and the adjusting component is arranged on the shifting frame. The middle of the material shifting frame is fixedly connected to the transmission shaft, a balance weight head and a material shifting tail are correspondingly formed at the two ends of the material shifting frame, the telescopic frame is arranged at the material shifting tail of the material shifting frame in a telescopic mode, one end of the telescopic frame extends out of the material shifting frame, and the scraper is detachably installed on the side portion of the end, extending out of the material shifting frame, of the telescopic frame. The adjusting assembly is arranged on the side of the shifting frame and used for adjusting the length of the telescopic frame extending out of the shifting frame. The telescopic frame is arranged in a telescopic mode relative to the material shifting frame, the downward scraper on the telescopic frame is adjusted to a proper position through the adjusting assembly, it is ensured that materials on the section of a belt are scraped and swept cleanly when the sampling structure samples, and therefore the accuracy of the material sampling result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling machinery technical field, concretely is adjustable sampling head of a kind of belt middle sampling machine. BACKGROUND

[0002] At present, belt middle sampling machine is widely applied in steel enterprises, coal and electricity enterprises and mines, coking plants etc., is usually installed in the middle position of belt, and is mainly used for the sampling of material quality inspection, such as: ore, coal, coke and other powder material. The sampling mode of belt middle sampling machine is: in the process of belt conveying material, the sampling head is driven to sweep belt by motor reducer, and the material is scraped from the belt and enters into sample collecting device, to achieve the purpose of sampling.

[0003] In the process of sampling, the impact force is large when sampling due to belt movement, to avoid that sampling head overturns or scratches belt, in the past, manufacturers will install a rubber scraper (rubber skin) at the front end of sampling head when designing sampling head, to ensure that the sampling head body part does not directly contact with belt during sampling, but the above method has the following disadvantages:

[0004] I. Influenced by impact force and friction force, the rubber scraper is not durable, and often needs to be replaced after stopping (pulling the belt), and the replacement is time-consuming and laborious, which seriously affects the belt discharging efficiency;

[0005] II. Influenced by the characteristics of part of material, when the scraper is worn or damaged, if it cannot be found or replaced in time, it will seriously affect the sample representativeness and the accuracy of test results, resulting in damage to the interests of the supplier or the demander, and misleading production. For example: the particle size of coke is an important basis for evaluation and settlement, which is composed of three parts of large coke, medium coke and coke powder, and the water absorption of coke powder is much higher than that of medium coke and large coke. Influenced by belt vibration and material shaking during transportation, coke powder is generally distributed at the bottom of the material (close to the belt). When the scraper is worn or damaged, the coke powder on the cross section of the belt cannot be scraped clean, which will undoubtedly directly affect the dry weight and total settlement amount of the batch of coke.

[0006] Therefore, it is necessary to design an adjustable sampling head of belt middle sampling machine to ensure that the material on the cross section of the belt is scraped clean, so as to improve the accuracy of sampling results. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing an adjustable sampling head of belt middle sampling machine to solve the problem that the scraper of sampling machine is easily affected by the representativeness of sample and the accuracy of test results when it is worn or damaged.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0009] The adjustable sampling head of the middle sampling machine of the belt comprises a belt support frame, a transmission shaft, a sampling structure and an adjusting assembly, the belt support frame comprises two support arms arranged oppositely, the transmission shaft is rotationally arranged on the two support arms, the sampling structure comprises a poking frame, an extension frame and a scraper, the middle part of the poking frame is fixedly connected to the transmission shaft, and corresponding weight head parts and a poking tail part are formed at the two ends of the poking frame, the extension frame is telescopically arranged at the poking tail part of the poking frame, one end of the extension frame extends out of the poking frame, the scraper is detachably mounted to the side of the one end of the extension frame extending out of the poking frame, and the adjusting assembly is arranged on the side of the poking frame and used for adjusting the length of the extension frame extending out of the poking frame.

[0010] Preferably, the poking frame is a frame structure with an open end, and the extension frame is telescopically arranged at the open end of the poking frame.

[0011] Preferably, long strip grooves are formed in the length direction of the two side walls of the poking tail part.

[0012] Preferably, a plurality of adjusting assemblies are arranged, each adjusting assembly comprises an adjusting screw and a fastening nut, the adjusting screw passes through the two long strip grooves and the extension frame respectively, and the fastening nuts are arranged in a plurality of groups and are screwed on the one end of the adjusting screw extending out of the long strip grooves and abut against the side walls of the poking tail part.

[0013] Preferably, the outer wall of one of the support arms is provided with a bracket, the top surface of the bracket is provided with a motor reducer, and the output shaft of the motor reducer is in transmission connection with the transmission shaft.

[0014] Preferably, a plurality of weight blocks are arranged on the weight head part.

[0015] Preferably, the length of the weight head part from the axis of the transmission shaft is shorter than the length of the poking tail part from the axis of the transmission shaft.

[0016] Preferably, the scraper is a PE plate.

[0017] Preferably, the scraper is fixed on the extension frame through bolts.

[0018] Compared with the prior art, the beneficial effects of the adjustable sampling head of the middle sampling machine of the belt are as follows: the extension frame is telescopically arranged relative to the poking frame, the downward scraper on the extension frame is adjusted to a suitable position through the adjusting assembly, the material on the cross section of the belt is scraped clean when the sampling structure samples, the accuracy of the sampling result is improved, the problem that the existing rubber scraper is not durable and needs to be replaced, seriously affects the discharging efficiency and the accuracy of the test result, affects settlement and misleads production is solved, the service life of the scraper is prolonged, the maintenance time is shortened, and the discharging efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 Front view of the adjustable sampling head of the belt middle part sampling machine of the utility model;

[0020] Fig. 2 Front view of the adjustable sampling head of the belt middle part sampling machine of the utility model;

[0021] Correspondence is marked in the figure as follows:

[0022] 1, belt support frame; 11, support arm; 2, transmission shaft; 3, sampling structure; 31, material stirring frame; 311, counterweight head; 312, material stirring tail; 32, telescopic frame; 33, scraper; 4, adjusting assembly; 41, adjusting screw; 42, fastening nut; 5, long chute; 6, bracket; 7, motor reducer; 8, counterweight block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figs. 1-2 An adjustable sampling head of a belt middle part sampling machine is used for scraping and sampling materials on the cross section of an arc-shaped belt, comprising a belt support frame 1, a transmission shaft 2, a sampling structure 3 and an adjusting assembly 4. The belt support frame 1 comprises two oppositely arranged support arms 11, and the transmission shaft 2 is rotationally arranged on the two support arms 11. In this embodiment, the transmission shaft 2 is installed on the two support arms 11 through a bearing seat. The sampling structure 3 comprises a material stirring frame 31, a telescopic frame 32 and a scraper 33. The material stirring frame 31 is fixedly connected to the middle of the transmission shaft 2, and correspondingly forms a counterweight head 311 and a material stirring tail 312 at both ends of the material stirring frame 31. The material stirring frame 31 swings around the axis of the transmission shaft 2 under the driving of the transmission shaft 2, and scrapes materials through the material stirring tail 312. The telescopic frame 32 is telescopically arranged at the material stirring tail 312 of the material stirring frame 31, and one end of the telescopic frame 32 extends out of the material stirring frame 31. The scraper 33 is detachably installed on the side of the telescopic frame 32 extending out of the material stirring frame 31.

[0025] In this embodiment, the scraper 33 is fixed on the telescopic frame 32 through bolts. When the scraper 33 is damaged and cannot be used, a new scraper 33 can be replaced by unscrewing the bolts. The scraper 33 is made of PE board. PE stands for polyethylene material. Using PE board can avoid scratching the surface of the belt by the scraper 33. The adjusting assembly 4 is arranged on the side of the material stirring frame 31 for adjusting the length of the telescopic frame 32 extending out of the material stirring frame 31.

[0026] The embodiment ensures that the sampling structure 3 can scrape clean the material on the belt section when sampling, thereby improving the accuracy of the material sampling result, solving the problems of the existing rubber scraper which is not durable, needs to be replaced during shutdown, seriously affects the discharge efficiency and the accuracy of the test result, affects settlement and misleads production, prolonging the service life of the scraper 33, shortening the maintenance time and improving the discharge efficiency.

[0027] The material pushing frame 31 is a frame structure with one end open, and the telescopic frame 32 is telescopically arranged at the open end of the material pushing frame 31, i.e. at one end of the open material pushing tail 312.

[0028] Please refer to Figs. 1-2 The two side walls of the material pushing tail 312 are provided with long grooves 5 along the length direction. In the embodiment, the adjusting assembly 4 is provided with a plurality of adjusting assemblies 4, each of which includes an adjusting screw 41 and a fastening nut 42, and the adjusting screw 41 passes through the two long grooves 5 and the telescopic frame 32. The fastening nut 42 is provided with a plurality of fastening nuts 42, which are screwed at one end of the adjusting screw 41 extending out of the long groove 5 and abut against the side wall of the material pushing tail 312, for fixing the adjusting screw 41 and the telescopic frame 32 on the material pushing frame 31.

[0029] Please refer to Figs. 1-2 The outer wall of one of the support arms 11 of the belt support frame 1 is provided with a bracket 6, and the top surface of the bracket 6 is provided with a motor reducer 7, and the output shaft of the motor reducer 7 is in transmission connection with the transmission shaft 2, for driving the transmission shaft 2 to rotate.

[0030] The counterweight head 311 is provided with a plurality of counterweight blocks 8 for balancing the gravity center of the material pushing frame 31. In the embodiment, the weight and number of the counterweight blocks 8 can be adjusted according to the actual situation. The length from the end of the counterweight head 311 to the axis of the transmission shaft 2 is shorter than the length from the end of the material pushing tail 312 to the axis of the transmission shaft 2. When sampling is stopped, the belt support frame 1 faces upward, and the material pushing tail 312 faces downward, preventing the telescopic frame 32 on the material pushing frame 31 from blocking the material on the belt.

[0031] The working principle of the adjustable sampling head of the belt middle part sampling machine is as follows: the material stirring frame 31 is installed on the supporting arm 11 of the belt supporting frame 1, when sampling, the transmission shaft 2 is driven to rotate by the output shaft of the motor speed reducer 7, the material stirring frame 31 connected with the transmission shaft 2 rotates around the axis of the transmission shaft 2, so that the material on the belt is scraped, the scraped material enters into the sample collecting device (not shown in the figure), so that the sampling purpose is achieved; when the scraper 33 is worn, the scraper 33 on the telescopic frame 32 can be easily adjusted to the appropriate position by loosening the adjusting screw 41, so that the scraper 33 is seamlessly matched with the surface of the belt, so that the material on the cross section of the belt is scraped clean by the scraper 33 during sampling.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable sampling head for a belt-mounted sampling machine, characterized in that: The system includes a belt support frame (1), a drive shaft (2), a sampling structure (3), and an adjustment assembly (4). The belt support frame (1) includes two opposing support arms (11), and the drive shaft (2) is rotatably mounted on the two support arms (11). The sampling structure (3) includes a material feeder (31), a telescopic frame (32), and a scraper (33). The material feeder (31) is fixedly connected to the drive shaft (2) in the middle, and correspondingly formed at both ends of the material feeder (31). The counterweight head (311) and the material feeding tail (312) are formed. The telescopic frame (32) is telescopically set at the material feeding tail (312) of the material feeding frame (31). One end of the telescopic frame (32) extends outside the material feeding frame (31). The scraper (33) is detachably installed on the side of the telescopic frame (32) extending out of the material feeding frame (31). The adjustment component (4) is set on the side of the material feeding frame (31) to adjust the length of the telescopic frame (32) extending out of the material feeding frame (31).

2. The adjustable sampling head of the belt mid-section sampling machine according to claim 1, characterized in that: The material feeder (31) is a frame structure with one end open, and the telescopic frame (32) is telescopically installed at the open end of the material feeder (31).

3. The adjustable sampling head of the belt mid-section sampling machine according to claim 2, characterized in that: The feed tail (312) has long grooves (5) on its opposite side walls along its length.

4. The adjustable sampling head of the belt mid-section sampling machine according to claim 3, characterized in that: The adjustment components (4) are provided in multiple ways. Each adjustment component (4) includes an adjustment screw (41) and a fastening nut (42). The adjustment screw (41) passes through two long slide grooves (5) and a telescopic frame (32) respectively. Several fastening nuts (42) are provided and are screwed to one end of the adjustment screw (41) that extends out of the long slide groove (5) and abut against the side wall of the feeding tail (312).

5. The adjustable sampling head of the belt mid-section sampling machine according to claim 1, characterized in that: One of the support arms (11) has a bracket (6) on its outer wall, and a motor reducer (7) is mounted on the top surface of the bracket (6). The output shaft of the motor reducer (7) is connected to the transmission shaft (2).

6. The adjustable sampling head of the belt mid-section sampling machine according to claim 1, characterized in that: The counterweight head (311) is equipped with multiple counterweight blocks (8).

7. The adjustable sampling head of the belt mid-section sampling machine according to claim 1 or 6, characterized in that: The distance from the end of the counterweight head (311) to the center of the drive shaft (2) is shorter than the distance from the end of the feed tail (312) to the center of the drive shaft (2).

8. The adjustable sampling head of the belt mid-section sampling machine according to claim 1, characterized in that: The scraper (33) is a PE board.

9. The adjustable sampling head of the belt mid-section sampling machine according to claim 1, characterized in that: The scraper (33) is fixed to the telescopic frame (32) by bolts.

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