CN104458326B - Prepare the method for designing of the sampling unit of concentrated solution - Google Patents

Abstract

The present invention specifically relates to a design method of a sampling unit for equipment that utilizes low pressure and low boiling point to prepare concentrated liquid. The sampling unit includes a base body, which also includes a movable rod, a limit pin, a sampling chamber, a sampling hole, a shaft sleeve, and an equal pressure chamber. The sampling cavity runs through the upper and lower sides of the base body, and the isobaric cavity is constructed as a columnar blind hole, so that the isobaric cavity penetrates from the front of the base body and runs through the front and back of the sampling cavity; The movable rod and the shaft sleeve are closed and slidingly matched, and the limit pin is fastened on the movable rod, so that the limit pin cooperates with the front and back of the sampling chamber, and a ventilation channel is set in the matrix, so that the first and last ends of the ventilation channel are respectively connected to the The isobaric chamber communicates with the outside atmosphere. When the sampling unit samples the solution in the boiler, there is no need to terminate the concentration process, and it is not necessary to open the upper cover of the boiler. The solution in the boiler is taken out through the sampling hole of the sampling unit, and the pressure at both ends of the movable rod is balanced by the ventilation channel to realize Resistance-free sampling of moving rods.

Description

Design method of sampling unit for preparation of concentrate

technical field

The invention relates to the field of concentrated liquid preparation, in particular but not exclusively to a design method of a sampling unit for preparing concentrated liquid.

Background technique

The boiling point of water decreases with the decrease of air pressure, so reducing the pressure can make water boil at a relatively low temperature, and the boiling water continuously converts liquid water into hot water vapor, and the hot water vapor will be at the interface between cold and hot Condensation into water mist, a large amount of water mist converges into water droplets, and a large amount of water droplets converges into water flow.

For this reason, people have proposed a device that uses the above principle to remove the water in the mixed liquid, that is, the equipment for preparing the concentrated liquid, condensing the hot steam generated in the boiler into liquid water, and then transporting the water to a specific container, so that Reduce the moisture in the mixture to achieve the concentration effect.

When the concentration of the concentrated liquid in the boiler needs to be detected, how to sample the concentrated liquid in the boiler.

Contents of the invention

The object of the present invention is to solve the above problems, and provide a design method of a sampling unit for a low-pressure, low-boiling-point preparation equipment for a concentrated liquid.

For this reason, the present invention provides a kind of design method of the sampling unit that prepares concentrated liquid, described sampling unit comprises base body, is characterized in that, described sampling unit also comprises movable bar, limit pin, sampling chamber, sampling hole, shaft Sleeve, equal pressure chamber, so that the sampling chamber penetrates the upper and lower sides of the base body, and the equal pressure chamber is constructed as a columnar blind hole, so that the equal pressure chamber penetrates from the front of the base body and runs through the front and back of the sampling chamber; The interference fit of the pressure chamber makes the movable rod and the shaft sleeve fit in a closed sliding manner, fastens the limit pin on the movable rod, makes the limit pin cooperate with the front and back of the sampling chamber, and sets a ventilation channel in the matrix to make the air flow The first and last ends of the passage communicate with the isobaric chamber and the outside atmosphere respectively.

Advantageously, when the limit pin cooperates with the front of the sampling chamber, the movable rod is in the pull-out position, so that the sampling hole is located outside the base body; when the limit pin cooperates with the back of the sampling chamber, the movable rod is in the insertion position , so that the sampling hole is located inside the sampling cavity.

Advantageously, the ventilation channel is extended to the front of the base body, the sampling cavity of the sampling unit is arranged inside the boiler, and the handle is arranged outside the boiler.

Advantageously, the sampling unit is arranged on the side wall of the boiler unit close to the bottom.

Beneficial effect

When the sampling unit detects the concentration of the solution in the boiler, there is no need to terminate the concentration process, let alone open the upper cover of the boiler, take out the solution in the boiler through the sampling hole of the sampling unit, and use the ventilation channel to balance the pressure at both ends of the movable rod. Realize the non-resistance sampling of the movable rod.

Description of drawings

The invention and its advantages will be better understood in the following description of an embodiment given as a non-limiting example with reference to the accompanying drawings, which follow:

The perspective view of the boiler in Fig. 1;

Figure 2-6 is a perspective view of the sampling unit, wherein the movable rod is located in different positions;

Figure 7 is an exploded perspective view of the sampling unit;

Fig. 8 is a partially cut perspective view of the sampling unit;

Figure 9-11 is a half-sectional view of the sampling unit, where the movable rod is located in different positions;

Explanation of reference signs

14. Sampling unit; 1401. Base body; 1402. Limit pin; 1403. Movable rod; 1404. Sampling hole; 1405. Sampling cavity; 1406. Handle;

detailed description

As shown in Figure 1, the side wall of the boiler unit is provided with a sampling unit 14 near the bottom. Referring to Figures 7 and 8, the sampling unit 14 includes a base body 1401, a movable rod 1403, a limit pin 1402, a sampling cavity 1405, and a sampling hole 1404 , a shaft sleeve 1407, and an equal pressure chamber 1409.

As shown in Figure 9, the sampling cavity 1405 runs through the upper and lower sides of the base body 1401, and the isobaric cavity 1409 is a columnar blind hole that penetrates from the front of the base body 1401 and runs through the front and rear sides of the sampling cavity 1405; the shaft sleeve 1407 and the equal pressure cavity 1409 Interference fit, the movable rod 1403 and the shaft sleeve 1407 are in closed sliding fit, the limit pin 1402 is fastened on the movable rod 1403 , and the sampling hole 1404 is set on the movable rod 1403 .

As shown in Figures 9 and 10, the stopper pin 1402 cooperates with the front and back of the sampling chamber 1405. When the stopper pin 1402 cooperates with the front of the sampling chamber 1405, the movable rod 1403 is in the pull-out position, and the sampling hole 1404 is located at the base 1401. Outside, refer to Fig. 4-5; when the limit pin 1402 cooperates with the back of the sampling chamber 1405, the movable rod 1403 is in the insertion position, and the sampling hole 1404 is located inside the sampling chamber 1405, refer to Fig. 2 and Fig. 3 .

As shown in Figure 8, a ventilation channel 1408 is provided in the base body 1401, and the first and last ends of the ventilation channel 1408 communicate with the equal pressure chamber 1409 and the outside atmosphere respectively. The air pressure in the cavity 1409 is consistent with the external air pressure, so that the movable rod 1403 can move more flexibly. The movable rod 1403 is provided with a handle 1406 near the front of the substrate 1401. The diameter of the handle 1406 is larger than the inner diameter of the shaft sleeve 1407. The sampling chamber 1405 of the sampling unit 14 is located in the boiler Inside, the handle 1406 is located outside the boiler.

Sampling process: Referring to Figures 9, 10, and 11, during the concentration process, the concentrated liquid in the boiler can be sampled through the sampling unit 14, and the concentration of the sample can be detected. Before sampling, in order to improve the detection accuracy, the handle 1406 is rotated quickly, as shown in Figure 6, the concentrated solution remaining in the sampling hole 1404 is thrown out with the help of centrifugal force, and then with the help of the direction mark on the handle 1406, the The sampling hole faces upwards, the concentrated solution enters the sampling hole 1404, and then the movable rod 1403 is pulled out to the pull-out position, and the concentrated liquid in the sampling hole 1404 is detected by the detection pen, or the movable rod 1403 is turned so that the sampling hole 1404 faces downwards, and the sampling hole The concentrate in 1404 drips into the vessel under the action of gravity. After sampling, the movable rod 1403 is pushed back to the insertion position.

The base body 1401 of the sampling unit 14 can be made by investment casting, and the cylindrical isobaric cavity is machined by a secondary boring process to make it fit with the bushing in an interference fit.

Claims (3)

1. A design method for a sampling unit (14) for preparing concentrated liquid, the sampling unit (14) includes a base (1401), characterized in that the sampling unit (14) also includes a movable rod (1403), Limiting pin (1402), sampling chamber (1405), sampling hole (1404), bushing (1407), equal pressure chamber (1409), so that sampling chamber (1405) penetrates the upper and lower sides of the base body (1401), etc. The pressure chamber (1409) is configured as a columnar blind hole, so that the isobaric chamber (1409) penetrates from the front of the base body (1401) and runs through the front and back of the sampling chamber (1405); the shaft sleeve (1407) and the isobaric chamber ( 1409) interference fit, so that the movable rod (1403) and the shaft sleeve (1407) are in a closed sliding fit, and the limit pin (1402) is fastened on the movable rod (1403), so that the limit pin (1402) and the sampling chamber (1405) on the front or the back side, set the ventilation channel (1408) in the base body (1401), so that the first and last ends of the ventilation channel (1408) communicate with the isobaric chamber (1409) and the outside atmosphere respectively; connect the sampling hole (1404 ) is set on the movable rod (1403), when the limit pin (1402) cooperates with the front of the sampling cavity (1405), the movable rod (1403) is in the pull-out position, so that the sampling hole (1404) is located on the base body (1401) outside; when the limit pin (1402) cooperates with the back of the sampling chamber (1405), the movable rod (1403) is in the insertion position, so that the sampling hole (1404) is located inside the sampling chamber (1405). 2. A method for designing a sampling unit (14) for preparing concentrated liquid according to claim 1, characterized in that the ventilation channel (1408) is extended to the front of the base (1401), and the sampling unit ( 14) The sampling cavity (1405) is set inside the boiler, the handle (1406) is set outside the boiler, and the handle (1406) is set on the movable rod (1403) close to the front of the base (1401), so that the diameter of the handle (1406) larger than the inside diameter of the bushing (1407). 3. The design method of a sampling unit (14) for preparing concentrated liquid according to claim 1, characterized in that the sampling unit is arranged on the side wall of the boiler unit near the bottom.