Automatic sampler for feed-grade powdery monocalcium phosphate

Abstract

The utility model discloses an automatic sampler for feed-grade powdery monocalcium phosphate. The automatic sampler comprises a rack, a gear motor, a receiving hopper, a carrier roller, a chute and a sampling pipe, the rack is erected above a belt for conveying feed-grade powdery monocalcium phosphate; the speed reducing motor is mounted on the rack and is in driving connection with one end of the material receiving hopper; a hollow cavity is formed in the receiving hopper, and an opening is formed in the extending end of the receiving hopper; an opening of the receiving hopper is communicated with the chute; and the sampling pipe is connected with the middle part of the receiving hopper and is connected with the hollow cavity. When the sampler is applied to sampling in actual production, compared with a manual sampling mode, the automatic sampler has the advantages that the sampled sample is more representative, and the obtained result can more objectively reflect various real indexes of a product. The sampler can effectively improve the reliability of a sampling result, an operator does not need to get close to a belt for sampling, the sampling operation safety is improved, and material blockage is avoided when a sample falls.

Description

Technical Field

[0001] The present application relates to the technical field of feed-grade calcium phosphate production, and in particular to an automatic sampler for feed-grade powdered monocalcium phosphate. Background Art

[0002] At present, feed-grade calcium phosphate salts mainly include: monocalcium phosphate, calcium hydrogen phosphate (mono-dicalcium phosphate), tricalcium phosphate, etc. Among them, monocalcium phosphate has the highest effective phosphorus content, good water solubility, and high biological value. It can be used as a phosphorus and calcium supplement for animal feed. Its water-soluble characteristics make it particularly suitable as a phosphorus and calcium source for aquatic animals such as fish, shrimps, and crabs.

[0003] At present, the industrial production process of feed-grade powdered calcium dihydrogen phosphate is the slurry method. The slurry generated by the reaction of purified phosphoric acid and calcium ore slurry is spray-dried, matured, screened, and packaged to obtain the product. There is no granulation step in this process, and the product appearance is white or off-white powder, which is beneficial for feed manufacturers to directly add it to aquatic animal feed, eliminating the need for crushing, screening and other operations.

[0004] Before packaging and delivery, the powdered materials of feed-grade powdered calcium dihydrogen phosphate need to be screened by a vibrating screen, and the screened materials are qualified products with particle size. During the process of transferring the screened materials to the product packaging silo by belt, the products need to be sampled and analyzed to ensure that the product quality meets the factory specifications.

[0005] In the sampling process, the sampler holds a sampling spoon or a sampling shovel and randomly samples the products on the belt at intervals. This method wastes manpower, and the operator needs to be close to the conveyor belt to operate, which is easy to cause safety accidents.

[0006] The existing devices for sampling powder materials conveyed on a belt have a complex structure and are difficult to achieve continuous random sampling of materials on the belt cross section. For example, CN 200820013164.8 discloses a simple automatic sampler for powdered mineral products on a belt. The sampler is connected to a crank linkage mechanism and a reduction motor to drive a sampling mechanism to reciprocate and extend to sample the mineral powder at the belt head. The device cannot accurately sample cross-sectional samples on the belt.

[0007] The information disclosed in the background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in the field. Utility Model Content

[0008] In response to the above-mentioned technical problems, the present application provides an automatic sampler for feed-grade powdered calcium dihydrogen phosphate, which does not require manual sampling, can improve the randomness and uniformity of sampling, improve the representativeness of the results obtained, and realize repeated accurate sampling of belt cross-section materials.

[0009] The present application provides an automatic sampler for feed-grade powdered monocalcium phosphate, comprising: a frame, a reduction motor, a receiving hopper, a roller, a chute, and a sampling tube; the frame is mounted above a belt for conveying feed-grade powdered monocalcium phosphate;

[0010] The reduction motor is installed on the frame and is drivingly connected to one end of the receiving hopper; a hollow cavity is arranged inside the receiving hopper, and an opening is arranged on the extended end of the receiving hopper; the opening of the receiving hopper is connected to the chute;

[0011] The sampling tube is connected to the middle of the receiving hopper and is connected to the hollow cavity;

[0012] The sampling tube is set to rotate in the opposite direction of the belt feeding direction;

[0013] The sampling tube includes: a first section, a second section and a bent pipe; the first section is connected to the receiving hopper; the first section is connected to the second section; the bent pipe is arranged at the bottom of the second section; the opening direction of the bent pipe is arranged toward the rotation direction of the sampling tube;

[0014] The angle between the first section and the second section is B, which is 165° to 168°;

[0015] The included angle between the lower end face and the upper end face of the elbow is A, and A is 60 to 62 degrees.

[0016] Preferably, the included angle between the first section outer side wall and the top side wall of the receiving hopper is C, and C is 120-122°.

[0017] Preferably, when the bottom end of the sampling tube rotates to the lowest point, the bottom end of the sampling tube is 3.5 to 4.8 cm lower than the center point of the belt upper material layer.

[0018] Preferably, it comprises: adjusting legs; and adjusting legs are respectively arranged on each top corner of the bottom surface of the frame.

[0019] Preferably, it comprises: a sample box; the sample box is connected to the bottom of the chute.

[0020] Preferably, the center line of the sampling tube coincides with the center line of the upper material layer of the belt.

[0021] Preferably, the open end of the receiving hopper is a bell mouth.

[0022] Preferably, the hollow cavity of the receiving hopper is arranged in the bell mouth; and the sampling tube is connected to one side of the bell mouth.

[0023] Preferably, the inner bottom surface of the chute is a sloping bottom.

[0024] The beneficial effects of this application include:

[0025] 1) The feed-grade powdered calcium dihydrogen phosphate automatic sampler provided in the present application, through the sampling tube connected to the receiving hopper, rotates under the drive of the reducer to take the material from the belt in the reverse flow, after taking the material, the sampled material falls into the receiving hopper along the sampling tube, and then falls into the chute through the inclined surface of the receiving hopper to achieve sampling, and the sampling frequency can be determined by the rotation speed of the reduction motor, so that multiple sampling of the material on the belt can be achieved. Thereby improving the uniformity of sampling and the representativeness of the test results.

[0026] 2) The feed-grade powdered calcium dihydrogen phosphate automatic sampler provided by the present application is used for sampling in actual production. It is found that the samples taken by the automatic sampler are more representative than those taken by manual sampling, and the results obtained can more objectively reflect the real indicators of the product. The sampler can effectively improve the reliability of the sampling results, and does not require the operator to approach the belt for sampling, thereby improving the safety of the sampling operation, and no material blockage will occur when the sample falls.

[0027] 3) The feed-grade powdered calcium dihydrogen phosphate automatic sampler provided in the present application eliminates the manual sampling process, avoids potential damage to the sampling personnel caused by the belt, and also avoids manual sampling errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the perspective structure of a feed-grade powdered monocalcium phosphate automatic sampler in at least one embodiment provided in the present application;

[0029] Figure 2 A schematic diagram of the main structure of a sampling tube in at least one embodiment provided in the present application;

[0030] Figure 3 A schematic diagram of a front perspective structure of a sampling tube and a receiving hopper in at least one embodiment provided in the present application;

[0031] Legend:

[0032] Sample box 1, chute 2, machine cover 3, reduction motor 4, receiving hopper 5, roller 6, adjustment leg 7, belt 8, sampling tube 9, bell mouth 51. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0035] The technical means that are not described in detail in this application and are not used to solve the technical problems of this application are all set according to the common knowledge in the field, and can be implemented in a variety of common knowledge settings.

[0036] See also Figures 1 to 3 The feed-grade powdered monocalcium phosphate automatic sampler provided in the present application has a frame fixedly arranged above the belt by means of an adjusting leg 7. The adjusting leg 7 is a telescopic adjusting leg structure, and the length of the adjusting leg 7 can be adjusted according to the height of the upper material layer of the belt 8, thereby adjusting the depth of the sampling tube 9 inserted into the material layer. The reduction motor 4 is installed on the top surface of the frame; a machine cover 3 is provided on the top surface of the reduction motor 4. The output shaft of the reduction motor 4 is drivingly connected to one end of the receiving hopper 5; a hollow cavity is provided at the other end of the receiving hopper 5, and the hollow cavity of the receiving hopper 5 is connected to the sampling tube 9; the sampling tube 9 is extended outward from the receiving hopper 5. The extended end of the receiving hopper 5 is connected to the open top of the chute 2; and the bottom of the chute 2 is connected to the sample box 1.

[0037] The sampling tube 9 comprises: a first section, a second section and a bend connected in sequence; the angle between the first section and the second section is B, and B is 165°. A bend is arranged at the lower end of the second section, and the angle between the lower end face of the bend and the upper end face of the bend is A, and A is 60°.

[0038] The included angle between the first section of the outer side wall of the sampling tube 9 and the upper side wall of the receiving hopper 5 is C, and the angle C is 120°. When the sampling tube 9 rotates to the lowest point, it is 3.5 cm lower than the center point of the belt material layer.

[0039] The center line of the sampling tube 9 coincides with the center line of the belt material layer, and the rotation direction is opposite to the forward direction of the belt 8, so that the sampling tube 9 rotates against the forward direction of the material on the belt 8, thereby achieving effective material sampling on the belt 8.

[0040] The sampling tube 9 rotates one circle to complete the material collection: the sampling tube 9 rotates around the output shaft of the reduction motor 4 under the drive of the reduction motor 4. When the sampling tube 9 rotates to approach the material layer of the belt 8, the material enters the tube through the curved tube under the push of the belt 8 because the curved tube of the sampling tube 9 faces the material flow direction on the belt 8 to realize sampling. As the sampling tube 9 rotates to the farthest end away from the material layer of the belt 8, the sample slides along the sampling tube 9 into the receiving hopper 5. The extended end of the receiving hopper 5 is connected with the chute 2. The sampled material enters the chute 2 through the receiving hopper 5 and slides into the sample box 1 along the chute 2 for temporary storage. The sampling tube 9 can extend into the material layer for sampling, and the speed of the reduction motor 4 can be accelerated according to the sampling needs to realize multiple sampling. In the sampling process, the belt 8 continues to move forward, which can improve the uniformity of sampling and the representativeness of the test results of the obtained samples.

[0041] In a specific embodiment, the angle A of the bend at the lower end of the sampling tube 9 is 62°.

[0042] In a specific embodiment, the angle B of the sampling tube 9 is 166°.

[0043] In a specific embodiment, the included angle C between the sampling tube 9 and the receiving tube 5 is 121°.

[0044] In a specific embodiment, when the sampling tube 9 rotates to the lowest point, it is 4 cm lower than the center point of the material layer on the belt 8 .

[0045] In a specific embodiment, the center line of the sampling tube 9 coincides with the center line of the upper material layer of the belt 8 .

[0046] In a specific embodiment, the angle A of the sampling tube 9 is 61°.

[0047] In a specific embodiment, the angle B at the middle of the sampling tube 9 is 168°.

[0048] In a specific embodiment, the angle C between the sampling tube 9 and the receiving tube is 122°.

[0049] In a specific embodiment, the sampling tube 9 is 4.8 cm lower than the center point of the belt material layer when it rotates to the lowest point.

[0050] In a specific embodiment, a feed-grade powdered calcium dihydrogen phosphate automatic sampler made of 321 stainless steel is installed on a belt that conveys the finished feed-grade powdered calcium dihydrogen phosphate to be packaged.

[0051] In a specific embodiment, the belt 8 includes: a first section, a second section, and a third section; the first section and the third section are respectively connected to two sides of the second section; and the angles formed by the first section, the third section and the second section are obtuse angles.

[0052] In a specific embodiment, it includes: a plurality of rollers 6 ; the plurality of rollers 6 are in rolling contact with the top surface of the belt 8 respectively, providing power for the movement of the belt 8 .

[0053] In a specific embodiment, the open end of the receiving hopper 5 is a bell mouth 51. The bell mouth 51 enables the sampled material to smoothly enter the material chute 2 from the receiving hopper 5.

[0054] In a specific embodiment, the hollow cavity of the receiving hopper 5 is arranged in the bell mouth 51, and the sampling tube 9 is connected with one side of the bell mouth 51. The adoption of this structure enables the sampled material to smoothly enter the chute 2 from the receiving hopper 5.

[0055] In a specific embodiment, the inner bottom surface of the material chute 2 is an inclined bottom. The inclined bottom structure can increase the falling speed of the sample material and avoid blockage.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feed-grade powdered calcium dihydrogen phosphate automatic sampler, characterized in that: include: Frame, reduction motor, hopper, roller, chute, sampling tube; The frame is erected above the belt conveying feed-grade powdered monocalcium phosphate; The reduction motor is installed on the frame and is drivingly connected to one end of the receiving hopper; a hollow cavity is arranged inside the receiving hopper, and an opening is arranged on the extended end of the receiving hopper; the opening of the receiving hopper is connected to the chute; The sampling tube is connected to the middle of the receiving hopper and is connected to the hollow cavity; The sampling tube is set to rotate in the opposite direction of the belt feeding direction; The sampling tube includes: a first section, a second section and a bent pipe; the first section is connected to the receiving hopper; the first section is connected to the second section; the bent pipe is arranged at the bottom of the second section; the opening direction of the bent pipe is arranged toward the rotation direction of the sampling tube; The angle between the first section and the second section is B, which is 165° to 168°; The included angle between the lower end face and the upper end face of the elbow is A, and A is 60 to 62 degrees.

2. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: The included angle between the outer side wall of the first section and the top side wall of the receiving hopper is C, and C is 120-122°.

3. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: When the bottom end of the sampling tube rotates to the lowest point, the bottom end of the sampling tube is 3.5 to 4.8 cm lower than the center point of the belt upper material layer.

4. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: include: Adjust the legs; Adjustable legs are respectively arranged on each top corner of the bottom surface of the frame.

5. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: include: Sample box; the sample box is connected to the bottom of the chute.

6. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: The center line of the sampling tube coincides with the center line of the belt upper layer.

7. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: The open end of the receiving hopper is a bell mouth.

8. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 7, characterized in that: The hollow cavity of the material receiving hopper is arranged in the bell mouth; the sampling tube is connected with one side of the bell mouth.

9. The feed-grade powdered monocalcium phosphate automatic sampler according to claim 1, characterized in that: The inner bottom of the chute is a sloping bottom.

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