On-line specific gravity detection device suitable for feed-grade calcium phosphate production raw materials

Abstract

The utility model relates to the technical field of feed-grade calcium hydrophosphate production equipment, in particular to an on-line specific gravity detection device suitable for feed-grade calcium phosphate production raw materials, which comprises an automatic sampler, the automatic sampler is connected with a raw material tank through a feed pipe, and an overflow pipe is arranged on the upper portion of the automatic sampler. A liquid discharge pipe is arranged at the lower part of the automatic sampler, a specific gravity detection device is arranged in the automatic sampler, a partition plate is obliquely arranged at the bottom of the specific gravity detection device, the lowest end of the partition plate is connected with the liquid discharge pipe, and the partition plate is provided with a second pressure sensor; the first pressure sensor and the second pressure sensor are electrically connected with the PLC control system. Automatic sampling is conducted through the feeding pipe, the PLC control system automatically obtains the specific gravity of raw materials through detection signals of the two pressure sensors of the bottom partition plate and the upper overflow opening, online measurement of the specific gravity is achieved, and accurate control over sampling and detection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of feed - grade calcium hydrogen phosphate production equipment, and specifically, it relates to an on - line specific gravity detection device suitable for the raw materials of feed - grade calcium phosphate salt production. Background Technique

[0002] The production of feed - grade calcium phosphate salt usually uses concentrated phosphoric acid and calcium carbonate emulsion as raw materials. During the production process, in order to ensure product quality, the raw materials need to be formulated to a specific specific gravity. Therefore, frequently measuring the specific gravity of the raw materials becomes an important link in the production process.

[0003] However, the currently commonly used methods of manual sampling and specific gravity measurement have obvious deficiencies. On the one hand, this method has certain safety risks and poses a potential threat to the health of operators; on the other hand, human operation is often difficult to avoid errors, which may have an adverse impact on the final quality of the product. Therefore, there is an urgent need for a device that can automatically sample and detect the specific gravity on - line to improve production efficiency, ensure the safety of operators, and reduce the impact of human errors on product quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an on - line specific gravity detection device suitable for the raw materials of feed - grade calcium phosphate salt production, so as to solve the obvious deficiencies in the currently commonly used methods of manual sampling and specific gravity measurement mentioned in the above background technique.

[0005] To achieve the above - mentioned purpose, the utility model provides an on - line specific gravity detection device suitable for the raw materials of feed - grade calcium phosphate salt production, which is characterized in that: it includes an automatic sampler, the automatic sampler is connected to the raw material tank through a feed pipe, an overflow pipe is arranged on the upper part of the automatic sampler, a first pressure sensor is arranged near the outlet of the overflow pipe, a drain pipe is arranged on the lower part of the automatic sampler, a specific gravity detection device is arranged inside the automatic sampler, a partition plate is obliquely arranged at the bottom of the specific gravity detection device, the lowest end of the partition plate is connected to the drain pipe, the partition plate is equipped with a second pressure sensor, and the first pressure sensor and the second pressure sensor are respectively electrically connected to the PLC control system.

[0006] Preferably, a first automatic control valve is installed on the feed pipe, a second automatic control valve (105) is installed on the drain pipe, and the first automatic control valve and the second automatic control valve are respectively electrically connected to the PLC control system.

[0007] Preferably, the overflow pipe is inclined downward at an angle of 45° with the horizontal direction.

[0008] Preferably, the partition plate is inclined downward at an angle of 30° with the horizontal direction.

[0009] Preferably, a washing device is arranged inside the automatic sampler. The washing device is composed of a washing nozzle, a washing water pipe, and a washing water pipe branch. The washing water pipe branch has multiple layers. The washing nozzle is arranged at the end of the washing water pipe branch. The washing nozzle includes a horizontal washing nozzle and a vertical washing nozzle.

[0010] Preferably, four washing water pipe branches are evenly distributed along the radial direction of the washing water pipe for each layer. The water outlet direction of the horizontal washing nozzle arranged at the end forms a 90° angle with the washing water pipe branch.

[0011] Preferably, a vertical washing nozzle is arranged at the end of the washing water pipe branch connected to the bottom of the washing water pipe. The water outlet direction of the vertical washing nozzle is vertically downward.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the specific gravity on-line detection device applicable to the production raw materials of feed-grade calcium phosphate salts, automatic sampling is carried out through the feed pipe. The PLC control system automatically obtains the specific gravity of the raw materials through the detection signals of two pressure sensors at the bottom partition and the upper overflow port, realizes the on-line measurement of the specific gravity, realizes the precise control of sampling and detection, saves manpower, and avoids the error of manual detection. After the sampling and detection are completed, discharging is carried out through the automatic control valve, and washing is carried out through the washing device, which is beneficial to the recycling of samples and also facilitates re-sampling and detection after being washed clean. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the washing device of the present utility model from one angle;

[0016] Figure 3 It is a schematic diagram of the structure of the washing device of the present utility model from another angle;

[0017] The meanings of each label in the figure are as follows:

[0018] 1. Automatic sampler; 101. Feed pipe; 102. Overflow pipe; 1021. First pressure sensor; 103. Drain pipe; 104. First automatic control valve; 105. Second automatic control valve; 2. Specific gravity detection device; 201. Partition; 202. Second pressure sensor; 3. Washing device; 301. Washing nozzle; 3011. Horizontal washing nozzle; 3012. Vertical washing nozzle; 302. Washing water pipe; 303. Washing water pipe branch. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] The present invention provides an on-line specific gravity detection device applicable to the raw materials for the production of feed-grade calcium phosphate salts. As Figures 1 - 3 shown, it includes an automatic sampler 1. The automatic sampler 1 is connected to the bottom of the side wall of the raw material tank through a feed pipe 101. An overflow pipe 102 is provided at the upper part of the automatic sampler 1, and a drain pipe 103 is provided at the lower part of the automatic sampler 1. A specific gravity detection device 2 and a washing device 3 are arranged inside the automatic sampler 1. The automatic sampler 1 is tightly connected to the bottom of the side wall of the raw material tank through the feed pipe 101, ensuring that samples can be continuously and stably drawn from the raw material tank, greatly improving the sampling efficiency and accuracy. Secondly, the overflow pipe 102 provided at the upper part of the automatic sampler 1 can effectively discharge the excess raw materials during the sampling process, preventing the pressure inside the sampler from being too high and ensuring the smooth progress of the sampling process. At the same time, the drain pipe 103 at the lower part of the automatic sampler 1 can quickly discharge the liquid inside the sampler after sampling and detection, making full preparations for the next sampling and further improving the production efficiency.

[0021] More importantly, the specific gravity detection device 2 arranged inside the automatic sampler 1 can detect the specific gravity of the sampled samples in real time and accurately, providing key quality control parameters for the production of feed-grade dicalcium phosphate. This design not only improves the quality stability of the product but also effectively reduces the product quality problems caused by human errors.

[0022] In addition, the setting of the washing device 3 is also one of the highlights of the present invention. After sampling and detection, the washing device 3 can thoroughly clean the inside of the automatic sampler, avoiding the adhesion and residue of raw materials, not only ensuring the accuracy of detection but also effectively extending the service life of the equipment and reducing the maintenance cost.

[0023] In this embodiment, a first automatic control valve 104 is installed on the feed pipe 101, and the first automatic control valve 104 is electrically connected to the PLC control system, facilitating the control of the opening and closing of the first automatic control valve 104.

[0024] Specifically, the overflow pipe 102 at the upper part of the automatic sampler 1 is a tubular structure inclined downward at an angle of 45° with the horizontal direction. A first pressure sensor 1021 is installed at the bottom side of the pipe of the overflow pipe 102, and the first pressure sensor 1021 is electrically connected to the PLC control system; a drain pipe 103 at the lower part of the automatic sampler 1 is equipped with a second automatic control valve 105, and the second automatic control valve 105 is electrically connected to the PLC control system, which is convenient for controlling the opening and closing of the second automatic control valve 105.

[0025] Furthermore, the bottom partition plate 201 of the specific gravity detection device 2 is inclined downward at an angle of 30° with the horizontal direction. The lowest end of the partition plate 201 is connected to the drain pipe 103. A second pressure sensor 202 is installed on the partition plate 201, and the second pressure sensor 202 is electrically connected to the PLC control system, which is convenient for data transmission of the second pressure sensor 202. Both the first pressure sensor 1021 and the second pressure sensor 202 are resistance strain sensors. The PLC control system receives the measured values of the first pressure sensor 1021 and the second pressure sensor 202 and can obtain the specific gravity of the sample through conversion.

[0026] Furthermore, the washing device 3 is composed of a washing nozzle 301, a washing water pipe 302, and a washing water pipe branch 303. And multiple layers of washing water pipe branches 303 are provided. The washing nozzle 301 is arranged at the end of the washing water pipe branch 303. The washing nozzle 301 includes a horizontal washing nozzle 3011 and a vertical washing nozzle 3012.

[0027] Furthermore, four branches are provided for each of the multiple layers of washing water pipe branches 303 at the upper part. The four branches of each layer of washing water pipe branches 303 form an angle of 90° with each other and are evenly distributed along the radial direction of the washing water pipe 302; the water outlet direction of the washing nozzle 301 forms an angle of 90° with the washing water pipe branch 303 and is the horizontal washing nozzle 3011. The water outlet of the horizontal washing nozzle 3011 is in a 60° fan shape in the vertical direction.

[0028] Furthermore, the end of the washing water pipe branch 303 connected to the bottom of the washing water pipe 302 is connected to the vertical washing nozzle 3012, and the water outlet direction of the vertical washing nozzle 3012 is vertically downward.

[0029] When the on-line specific gravity detection device for the raw materials of feed-grade calcium phosphate salt of the present utility model is in use, first, the automatic control valve 105 of the drain pipe is closed to ensure that the sample will not be lost during the sampling process. Then, the automatic control valve 104 of the feed pipe is opened, and the raw materials enter the automatic sampler 1 from the raw material tank through the feed pipe 101. The raw materials continuously enter the specific gravity detection device 2 until it is full, and the excess raw materials overflow through the overflow pipe 102.

[0030] When the raw material overflows into the overflow pipe 102, it will trigger the first pressure sensor 1021 (a resistance strain sensor) to generate a pressure signal. The pressure signal is transmitted to the PLC control system, and after system analysis, a command is issued to close the automatic control valve 104 of the feed pipe to stop feeding. The volume of the raw material in the specific gravity detection device 2 is fixed, and the second pressure sensor 202 (a resistance strain sensor) at the bottom measures the pressure. The PLC control system calculates the specific gravity of the raw material based on the pressure data.

[0031] After the specific gravity detection is completed, the PLC control system opens the automatic control valve 105 of the drain pipe, and the measured raw material is discharged through the drain pipe 103 to prepare for the next sampling.

[0032] After the drainage is completed, the PLC control system opens the washing water pipe 302, and the washing water sprays out from the washing nozzle 301. The washing nozzle 301 includes a horizontal washing nozzle 3011 and a vertical washing nozzle 3012, which flush the side wall and the bottom of the specific gravity detection device 2. The washed raw material and the washing liquid enter the underground collection tank for recycling, which is both environmentally friendly and economical.

[0033] Finally, it should be noted that for the specific gravity detection device 2 and other components in this embodiment, the electronic components in the above components are all general standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. At the idle places of this device, all the above electrical components are respectively connected by wires. The specific connection means should refer to the sequence of operations of each electrical component in the above working principle to complete the electrical connection, which are all well-known technologies in the art.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An on-line specific gravity detection device applicable to the raw materials for the production of feed-grade calcium phosphate salts, characterized in that: It includes an automatic sampler (1), which is connected to a raw material tank through a feed pipe (101). An overflow pipe (102) is provided at the upper part of the automatic sampler (1). A first pressure sensor (1021) is arranged near the outlet of the overflow pipe (102). A drain pipe (103) is provided at the lower part of the automatic sampler (1). A specific gravity detection device (2) is arranged inside the automatic sampler (1). A partition plate (201) is inclined at the bottom of the specific gravity detection device (2). The lowest end of the partition plate (201) is connected to the drain pipe (103). The partition plate (201) is equipped with a second pressure sensor (202). The first pressure sensor (1021) and the second pressure sensor (202) are respectively electrically connected to a PLC control system.

2. The specific gravity on-line detection device for the raw materials applicable to the production of feed-grade calcium phosphate salts according to claim 1, wherein: A first automatic control valve (104) is installed on the feed pipe (101), and a second automatic control valve (105) is installed on the drain pipe (103). The first automatic control valve (104) and the second automatic control valve (105) are respectively electrically connected to the PLC control system.

3. The specific gravity on-line detection device for the raw materials applicable to the production of feed-grade calcium phosphate salts according to claim 1, wherein: The overflow pipe (102) is arranged to be inclined downward at an angle of 45° with the horizontal direction.

4. The specific gravity on-line detection device for the raw materials applicable to the production of feed-grade calcium phosphate salts according to claim 1, wherein: The partition plate (201) is arranged to be inclined downward at an angle of 30° with the horizontal direction.

5. The specific gravity on-line detection device for raw materials applicable to the production of feed-grade calcium phosphate salts according to claim 1, wherein: A washing device (3) is arranged inside the automatic sampler (1). The washing device (3) is composed of a washing nozzle (301), a washing water pipe (302), and a washing water pipe branch (303). And multiple layers of the washing water pipe branches (303) are provided. The washing nozzle (301) is arranged at the end of the washing water pipe branch (303). The washing nozzle (301) includes a horizontal washing nozzle (3011) and a vertical washing nozzle (3012).

6. The specific gravity on-line detection device for raw materials applicable to the production of feed-grade calcium phosphate salts according to claim 5, wherein: Four washing water pipe branches (303) are evenly distributed along the radial direction of the washing water pipe (302) for each layer. The water outlet direction of the horizontal washing nozzle (3011) arranged at the end is at an angle of 90° with the washing water pipe branch (303).

7. The specific gravity on-line detection device applicable to the raw materials for the production of feed-grade calcium phosphate salts according to claim 5, characterized in that: A vertical washing nozzle (3012) is arranged at the end of the washing water pipe branch (303) connected to the bottom of the washing water pipe (302). The water outlet direction of the vertical washing nozzle (3012) is vertically downward.

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