Double-channel powder feeding mechanism for full-automatic powder feeding centralized liquid supply system

Abstract

The utility model discloses a double-channel powder feeding mechanism for a full-automatic powder feeding centralized liquid supply system, which comprises two independent powder feeding channels, and each group of powder feeding channel comprises a feeding valve and a servo motor which are both connected to a feeding structure fixing plate; the feeding valve comprises a specially-designed spherical valve element, a center shaft of a valve element body is provided with a through hole, a spherical surface is cut to form a valve clack, the valve element is arranged in a cavity of a valve body, a valve body straight groove is formed in the valve body and communicated with the through hole of the valve element, and a powder inlet and a powder outlet are formed in the upper portion and the lower portion of the cavity of the valve body respectively and connected with a connecting pipe. And the servo motor is connected with the valve core shaft in the valve body to drive the valve core to rotate. Compared with the prior art, the double-channel powder feeding mechanism has the beneficial effects that the double-channel powder feeding mechanism adopts an independent double-channel design, so that the shutdown of a liquid supply system caused by faults is avoided; each group of powder feeding channels is closed through a connecting pipe, so that the powder is prevented from being dispersed and polluting the environment; and due to the improved design of the feeding valve, powder feeding and liquid preparation are finer.

Description

Technical Field

[0001] The utility model relates to the technical field of medical liquid preparation equipment, in particular to a double-channel powder feeding mechanism for a full-automatic powder feeding and centralized liquid supply system. Background Art

[0002] In the existing centralized liquid supply system, dialysis powder is often added in a single path. This method has the problem of low liquid preparation safety. Once the path fails, liquid preparation cannot be carried out. The existing feeding mechanism and the liquid preparation structure are not closed structures, and the powder is easy to disperse and pollute the environment. In addition, in the existing centralized liquid supply system, dialysis powder is often added manually or by weighing. The powder is all added at one time. The amount of liquid prepared each time is large, and it cannot be prepared and used immediately. Especially in the summer when the temperature is high, it is easy to breed bacteria for a long time. Some liquid supply systems use a screw to feed powder, but the powder feeding amount of the screw is also large, and it is not easy to adjust the powder feeding amount more finely, and the accuracy of liquid preparation is not enough. Utility Model Content

[0003] In order to overcome the above defects, the utility model provides a dual-channel powder feeding mechanism for a fully automatic powder feeding and centralized liquid supply system. The independent dual-channel design avoids the shutdown of the liquid supply system caused by faults, and the improved feed valve design makes the powder feeding and liquid preparation more precise.

[0004] The utility model is implemented as follows: a dual-channel powder feeding mechanism for a fully automatic powder feeding centralized liquid supply system, comprising two independent powder feeding channels, each group of powder feeding channels comprising a feeding valve and a servo motor, both of which are connected to a feeding structure fixing plate; the feeding valve comprises a valve core and a valve body, the valve core is a spherical body, the central axis of the body has a through hole and a valve disc is cut on the spherical surface, the valve core is arranged in a cavity of the valve body, a through hole of a valve body straight groove is arranged in the valve body and connected to the valve core, a powder inlet and a powder outlet are arranged at the upper and lower parts of the valve body cavity, a valve core shaft A and a valve core shaft B are respectively arranged at the left and right sections of the valve body straight groove and an end cover bracket is arranged on the outer side; the servo motor is connected to the valve core shaft B at one end of the valve core shaft B to drive the valve core to rotate.

[0005] Furthermore, the end cover bracket at one end of the valve core shaft A is fixed to the valve body by bolts.

[0006] Furthermore, packing is provided between the valve core shaft A, the valve core shaft B and the straight groove of the valve body.

[0007] Furthermore, a shaft sleeve is provided outside the valve core shaft A and the valve core shaft B and inside the straight groove of the valve body.

[0008] Furthermore, a collecting tray is provided on the powder feeding channel, and the collecting tray is connected to the powder feeding port of the feeding valve through a feeding connecting pipe.

[0009] Furthermore, the powder outlet of the feed valve is connected to the discharge connecting pipe and then connected to the liquid dispensing device.

[0010] Furthermore, the feed valve and the servo motor are respectively connected through the end cover bracket and the motor fixing seat.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the dual-channel powder feeding mechanism adopts an independent dual-channel design to avoid shutdown of the liquid supply system caused by failures; and each group of powder feeding channels is closed through a connecting pipe to avoid powder dispersion and environmental pollution; the improved feeding valve design makes the powder feeding and liquid mixing more refined. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional diagram of the dual-channel powder feeding mechanism.

[0014] Figure 2 It is a three-dimensional diagram of the powder inlet valve.

[0015] Figure 3 It is a top view of the powder inlet valve.

[0016] Figure 4 yes Figure 3 AA section view.

[0017] Figure 5 It is a three-dimensional diagram of the valve core.

[0018] Figure 6 It is the side view of the valve core. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1The dual-channel powder feeding mechanism of the fully automatic powder feeding centralized liquid supply system includes two independent powder feeding channels, each group of powder feeding channels includes a feeding valve 33 and a servo motor 37 and is connected to a feeding structure fixing plate 39 through an end cover bracket 7 and a motor fixing seat 38. A collecting tray 34 is also provided on the powder feeding channel, and the collecting tray is connected to a powder inlet 81 of the feeding valve 33 through a feeding connecting pipe 35, and a powder outlet 82 of the feeding valve is connected to a discharge connecting pipe 36 and then connected to a liquid dispensing device.

[0021] The structure diagram of the multi-petal powder inlet valve is shown in Figure 2-6 The powder inlet valve comprises a valve core 4 and a valve body 8. The valve core 4 is a spherical body. The central axis of the body has a through hole 41 and a valve flap 42 is cut on the spherical surface (see Figure 5 and Figure 6 ), the valve core 4 is arranged in the cavity of the valve body 8, the valve body has a valve body straight groove 83 in the valve body connected to the through hole 41 of the valve core, the upper and lower parts of the valve body cavity are respectively provided with a powder inlet 81 and a powder outlet 82, the valve core shaft A 21 and the valve core shaft B 22 are respectively arranged in the left and right sections of the valve body straight groove 83 and an end cover bracket 7 is arranged on the outside, and the valve core shaft B 22 is connected to the servo motor to drive the valve core to rotate. The end cover bracket at one end of the valve core shaft A 21 is fixed to the valve body by bolts 1. A packing 5 is arranged between the valve core shaft A, the valve core shaft B and the valve body straight groove. A shaft sleeve 6 is arranged outside the valve core shaft A and the valve core shaft B and inside the valve body straight groove.

[0022] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dual-channel powder feeding mechanism for a fully automatic powder feeding and centralized liquid supply system, characterized in that: It includes two powder feeding channels, each set of powder feeding channels includes a feeding valve and a servo motor connected to a feeding structure fixing plate; The feed valve comprises a valve core and a valve body, wherein the valve core is a spherical body, the central axis of the body has a through hole and a valve disc is cut on the spherical surface, the valve core is arranged in the cavity of the valve body, the valve body has a through hole of the valve core connected to the valve body straight groove, the valve body cavity is provided with a powder inlet and a powder outlet respectively at the top and bottom, the valve core shaft A and the valve core shaft B are respectively arranged at the left and right sections of the valve body straight groove and an end cover bracket is arranged on the outside; The servo motor is connected to one end of the valve core shaft B to drive the valve core to rotate.

2. The dual-channel powder feeding mechanism for the fully automatic powder feeding and centralized liquid supply system according to claim 1 is characterized in that: The end cover bracket at one end of the valve core shaft A is fixed to the valve body by bolts.

3. The dual-channel powder feeding mechanism for the fully automatic powder feeding and centralized liquid supply system according to claim 1 is characterized in that: Packing is arranged between the valve core shaft A, the valve core shaft B and the straight groove of the valve body.

4. The dual-channel powder feeding mechanism for the fully automatic powder feeding and centralized liquid supply system according to claim 1 is characterized in that: A shaft sleeve is arranged outside the valve core shaft A and the valve core shaft B and inside the straight groove of the valve body.

5. The dual-channel powder feeding mechanism for the fully automatic powder feeding and centralized liquid supply system according to claim 1 is characterized in that: A material collecting tray is also provided on the powder feeding channel, and the material collecting tray is connected to the powder feeding port of the feeding valve through a feeding connecting pipe.

6. The dual-channel powder feeding mechanism for the fully automatic powder feeding and centralized liquid supply system according to claim 1 is characterized in that: The powder outlet of the feed valve is connected to the discharge connecting pipe and then to the liquid dispensing device.

7. The dual-channel powder feeding mechanism for the fully automatic powder feeding and centralized liquid supply system according to claim 1 is characterized in that: The feed valve and the servo motor are respectively connected through the end cover bracket and the motor fixing seat.

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