Uniform-speed liquid adding device of preparation equipment

Abstract

The utility model relates to the technical field of liquid preparation equipment, and discloses a uniform-speed liquid adding device of preparation equipment, which comprises a solution storage tank, a first pipeline, a pump body, a second pipeline, an electromagnetic valve, a flow velocity sensor and a liquid adding needle, one end of the first pipeline is connected with the liquid inlet end of the pump body, the other end of the first pipeline is connected with the liquid inlet end of the pump body, the liquid outlet end of the pump body is connected with one end of the second pipeline, the other end of the second pipeline is connected with the liquid adding needle, and the electromagnetic valve and the flow velocity sensor are arranged on the second pipeline. According to the utility model, the uniform-speed liquid adding function of the preparation equipment can be increased, so that the applicability of the liquid preparation equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid dispensing equipment, in particular to a liquid adding operation which needs to be uniform and fixed during dispensing. Background Art

[0002] Compounding equipment refers to mechanical equipment that can accurately proportion, mix, process or manufacture multiple materials or ingredients according to specific process requirements. These equipment usually have a high degree of automation and precision to ensure the quality and performance of the final product.

[0003] At present, the production of preparation equipment has not formed a relatively stable and controllable liquid adding device. How to achieve stable and controllable liquid adding during preparation to control the preparation reaction rate and batch uniformity, reduce the impurities generated by the reaction and improve product quality is a technical problem that urgently needs to be solved. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a uniform liquid adding device for a preparation equipment to achieve a method for controlling the preparation reaction rate and batch uniformity, and reducing impurities generated by the reaction to improve product quality.

[0005] The technical solution of the utility model is:

[0006] A uniform speed liquid adding device for a preparation equipment comprises a solution storage tank, a first pipe, a pump body, a second pipe, an electromagnetic valve, a flow rate sensor and a liquid adding needle, wherein the liquid outlet end of the solution storage tank is connected to one end of the first pipe, the other end of the first pipe is connected to the liquid inlet end of the pump body, the liquid outlet end of the pump body is connected to one end of the second pipe, the other end of the second pipe is connected to the liquid adding needle, and the electromagnetic valve and the flow rate sensor are arranged on the second pipe.

[0007] Preferably, the uniform speed liquid adding device of the above-mentioned preparation equipment further includes a controller, the signal output end of the controller is connected to the signal output end of the pump body and the electromagnetic valve, and the signal output end of the flow rate sensor is connected to the signal input end of the controller.

[0008] Preferably, the uniform speed liquid adding device of the above-mentioned preparation equipment further includes a liquid distributor, which has a liquid inlet port and multiple liquid outlet ports; wherein the liquid inlet port is connected to the end of the second pipe that is not connected to the pump body, and the multiple liquid outlet ports are each connected to a liquid adding needle.

[0009] Preferably, in the uniform speed liquid adding device of the above-mentioned preparation equipment, the liquid distributor includes a shell, and a liquid inlet channel, a distribution channel and at least two liquid outlet channels are arranged inside the shell; wherein, the liquid inlet channel is connected to the distribution channel, and at least two liquid outlet channels are connected to the distribution channel, one end of the liquid inlet channel is a liquid inlet port, and one end of the liquid outlet channel is a liquid outlet port.

[0010] Preferably, in the uniform-speed liquid adding device of the above-mentioned preparation equipment, a distribution valve and a distribution flow rate sensor are provided in the liquid outlet channel.

[0011] Preferably, in the uniform-speed liquid-adding device of the above-mentioned preparation equipment, the signal output end of the distribution flow rate sensor is connected to the signal input end of the controller, and the signal output end of the controller is connected to the signal input end of the distribution valve.

[0012] Preferably, in the uniform speed liquid adding device of the above-mentioned preparation equipment, the liquid outlet channels are set to three, namely the first liquid outlet channel, the second liquid outlet channel and the third liquid outlet channel, wherein the first liquid outlet channel, the second liquid outlet channel and the third liquid outlet channel are respectively connected to a liquid adding needle.

[0013] Preferably, in the uniform rate liquid adding device of the above-mentioned preparation equipment, the solution storage tank includes a tank body bracket, a tank body, a top air inlet port and a liquid outlet pipe; the tank body bracket fixedly supports the lower end of the tank body, the liquid outlet pipe is arranged at the bottom of the tank body and is connected to the interior of the tank body, the top air inlet port is arranged on the top of the tank body, and the top air inlet port is connected to the gas compression tank through a gas pipeline.

[0014] Preferably, in the uniform-speed liquid-adding device of the above-mentioned preparation equipment, the gas stored in the gas compression tank is air and / or nitrogen.

[0015] Preferably, in the uniform speed liquid adding device of the above-mentioned preparation equipment, the pump body is a peristaltic pump.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model can effectively control the liquid adding rate of the preparation equipment, achieve the uniformity of the products between batches, and simultaneously reduce the impurities generated by the reaction, thereby improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. The drawings illustrate various embodiments generally by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, like reference numerals are used throughout the drawings to refer to like or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0019] Figure 1 A structural schematic diagram of a uniform-speed liquid adding device of a preparation equipment according to an embodiment of the present utility model is shown.

[0020] Figure 2 A schematic diagram of the control structure of a uniform-speed liquid-adding device of a preparation equipment according to an embodiment of the present utility model is shown.

[0021] Figure 3 The structure diagram of a uniform speed liquid adding device of a preparation equipment according to an embodiment of the present utility model is shown when a liquid distributor is provided.

[0022] Figure 4 A plan view of a liquid distributor in a uniform-speed liquid-adding device of a preparation equipment according to an embodiment of the present utility model is shown.

[0023] Figure 5 A cross-sectional view of a liquid distributor in a uniform-speed liquid-adding device of a preparation equipment according to an embodiment of the present utility model is shown.

[0024] Figure 6 Another control structure schematic diagram of a uniform speed liquid adding device of a preparation equipment according to an embodiment of the present utility model is shown.

[0025] Figure 7 The structure diagram of a uniform speed liquid adding device of a preparation equipment according to an embodiment of the present utility model is shown when a gas compression tank is provided.

[0026] Reference numerals:

[0027] 1. Solution storage tank; 101. Tank bracket; 102. Tank body; 103. Top air inlet port; 104. Liquid outlet pipe; 105. Gas pipeline; 2. First pipeline; 3. Pump body; 4. Second pipeline; 5. Solenoid valve; 6. Flow rate sensor; 7. Dosing needle; 8. Controller; 9. Liquid distributor; 901. Liquid inlet port; 902. Liquid outlet port; 903. Shell; 904. Liquid inlet channel; 905. Distribution channel; 906. Liquid outlet channel; 9061. First liquid outlet channel; 9062. Second liquid outlet channel; 9063. Third liquid outlet channel; 907. Distribution valve; 908. Distribution flow rate sensor; 10. Gas compression tank. DETAILED DESCRIPTION

[0028] The following examples are merely intended to better illustrate the present invention, but the present invention is not limited to the examples listed. Therefore, non-essential improvements and adjustments to the embodiments based on the present invention by those skilled in the art and applied to other examples are still within the scope of protection of the present invention.

[0029] The present invention will now be further described with reference to the accompanying drawings.

[0030] Figure 1 The present invention provides a structural diagram of a uniform speed liquid adding device for a preparation device according to an embodiment of the present invention. Figure 1 As shown, the uniform speed liquid adding device of the preparation equipment includes a solution storage tank 1, a first pipeline 2, a pump body 3, a second pipeline 4, an electromagnetic valve 5, a flow rate sensor 6 and a liquid adding needle 7. The liquid outlet end of the solution storage tank 1 is connected to one end of the first pipeline 2, the other end of the first pipeline 2 is connected to the liquid inlet end of the pump body 3, the liquid outlet end of the pump body 3 is connected to one end of the second pipeline 4, the other end of the second pipeline 4 is connected to the liquid adding needle 7, and the electromagnetic valve 5 and the flow rate sensor 6 are arranged on the second pipeline 2.

[0031] In this embodiment, the solution storage tank 1 is used to store liquid raw materials for the product to be prepared. For example, a certain product a that the preparation equipment needs to prepare is prepared by solution A, solution B, solution C and solution D, then any one of solution A, solution B, solution C and solution D is stored in the solution storage tank 1. It can be understood that in order to complete the preparation of product a, it is necessary to start the uniform speed liquid adding devices of n preparation equipment during preparation, where n is the number of solutions required to be added to prepare product a. For example, if product a is composed of solution A, solution B, solution C and solution D, solution A is first added to the preparation equipment, and then solution B, solution C and solution D need to be added simultaneously or in batches to mix to prepare product a, so at this time n=3, that is, 3 uniform speed liquid adding devices are required to complete the preparation of product a. Wherein, the stepwise addition refers to adding solution B, solution C and solution D in sequence, or first adding solution B and solution C, or solution C and solution D, or solution B and solution D at the same time, and then adding solution D, or solution B, or solution C. The specific addition is determined according to the relevant process of the prepared product a, and is not specifically limited in this embodiment. When adding the solution, the uniform liquid adding device can control the corresponding added solution to be added to the preparation equipment at a set speed, thereby reducing impurities generated by the reaction and improving product quality; and because the liquid adding rate of each batch is controllable, the uniformity of the products obtained in batches can be guaranteed.

[0032] It should be noted that the preparation equipment mentioned in this article is common chemical equipment, such as chemical reactors, mixing tanks, etc.

[0033] The principle of uniform speed liquid adding device of the preparation equipment to achieve uniform speed liquid adding is as follows:

[0034] During liquid addition, the solenoid valve 5 is opened, the pump 3 is activated, and the solution stored in the solution storage tank 1 is fed into the dispensing device through the first and second pipes 2 and 4, respectively, and then through the dosing needle 7. A flow rate sensor 6 is used to collect the liquid flow rate. The pump 3 and the solenoid valve 5 are controlled based on the collected liquid flow rate. For example, if the liquid flow rate threshold range is set to [v0, v1] and the collected liquid flow rate is v2, if v2 < v0, the current liquid flow rate is below the set liquid flow rate threshold range. In this case, the liquid flow rate can be increased by increasing the operating power of the pump 3 and / or decreasing the opening of the solenoid valve 5 until the collected liquid flow rate v2 ∈ [v0, v1]. If v2 > v1, the current liquid flow rate is greater than the set liquid flow rate threshold range. In this case, the liquid flow rate can be reduced by decreasing the operating power of the pump 3 and / or increasing the opening of the solenoid valve 5 until the collected liquid flow rate v2 ∈ [v0, v1]. By dynamically adjusting the liquid flow rate, the liquid addition rate can be kept within the set liquid flow rate threshold range at all times, thereby achieving uniform liquid addition.

[0035] In some embodiments, as Figure 2 As shown, the uniform speed liquid adding device of the preparation equipment also includes a controller 8, the signal output end of the controller 8 is connected to the signal output end of the pump body 3 and the electromagnetic valve 5, and the signal output end of the flow rate sensor 6 is connected to the signal input end of the controller 8.

[0036] In this embodiment, a controller 8 is provided to control the liquid addition rate so that the liquid addition rate is maintained within a set range. For example, a liquid flow rate threshold range [v0, v1] is set and configured in the controller 8. The liquid flow rate v2 collected by the flow rate sensor 6 is fed to the controller 8. The controller 8 compares v2 with the liquid flow rate threshold range [v0, v1]. If v2 < v0, the controller 8 controls the increase in the working power of the pump body 3 and / or the reduction in the opening of the electromagnetic valve 5 to increase the liquid flow rate until the collected liquid flow rate v2∈[v0, v1]. If v2 > v1, the controller 8 controls the reduction in the working power of the pump body 3 and / or the increase in the opening of the electromagnetic valve 5 to reduce the liquid flow rate until the collected liquid flow rate v2∈[v0, v1]. The controller 8 can dynamically adjust the liquid flow rate in real time, so that the liquid addition rate is always within the set liquid flow rate threshold range, thereby realizing automatic uniform liquid addition control.

[0037] It should be noted that the controller 8 can be an existing device such as a single chip microcomputer, a PLC controller, etc. that can realize data acquisition and data processing.

[0038] In some embodiments, as Figure 3 As shown, the uniform speed liquid adding device of the preparation equipment also includes a liquid distributor 9, which has a liquid inlet port 901 and multiple liquid outlet ports 902; wherein the liquid inlet port 901 is connected to the end of the second pipe 2 that is not connected to the pump body 3, and the multiple liquid outlet ports 902 are each connected to a liquid adding needle 7.

[0039] In this embodiment, considering that when a certain product is prepared in batches, multiple preparation devices will be started at the same time, a liquid distributor 9 is provided so that the solution stored in a solution storage tank 1 can be used for multiple preparation devices at the same time. The liquid distributor 9 has multiple liquid outlet ports 902, each of which is connected to a liquid adding needle 7. In this way, when there are multiple preparation devices preparing products at the same time, the corresponding raw material solutions can be provided by a liquid storage tank 1. Compared with the method in which each preparation device needs to be equipped with a solution storage tank to add the same raw material liquid, by providing a liquid distributor in a uniform speed liquid adding device, the layout of the product production line can be simplified and the space utilization rate of the workshop can be improved.

[0040] In some embodiments, as Figure 4 and Figure 5 As shown, the liquid distributor 9 includes a shell 903, and a liquid inlet channel 904, a distribution channel 905 and at least two liquid outlet channels 906 are arranged inside the shell 903; wherein, the liquid inlet channel 904 is connected to the distribution channel 905, and at least two liquid outlet channels 906 are both connected to the distribution channel 905, one end of the liquid inlet channel 904 is a liquid inlet port, and one end of the liquid outlet channel 906 is a liquid outlet port, and a distribution valve 907 and a distribution flow rate sensor 908 are provided in the liquid outlet channel 906.

[0041] In this embodiment, the possibility of cross-use of raw materials for different products is taken into consideration. For example, if product a is prepared from solution A, solution B, solution C, and solution D, and product b is prepared from solution A, solution B, solution E, and solution F, then product a and product b may cross-use solution A and solution B. When product a and product b are prepared simultaneously, solution B may need to be added simultaneously. In this case, a solution storage tank containing solution B is required for each of the preparation equipment for product a and product b. In order to achieve the goal of completing the addition of solution B with one solution storage tank, this embodiment respectively sets a distribution valve 907 and a distribution flow rate sensor 908 in each liquid outlet channel 906, so that the distribution flow rate sensor 908 can collect the flow rate signal of the corresponding liquid outlet channel 906, and control the opening of the distribution valve 907 based on the set flow rate threshold. For example, when the flow rate signal exceeds the flow rate threshold, the flow rate is reduced by increasing the opening of the distribution valve 907. When the flow rate signal is lower than the flow rate threshold, the flow rate is increased by reducing the opening of the distribution valve 907, so that the liquid flow rate in the liquid outlet channel 906 is always within the set flow rate threshold range.

[0042] For example, there are three liquid outlet channels 906 , namely a first liquid outlet channel 9061 , a second liquid outlet channel 9062 and a third liquid outlet channel 9063 , wherein the first liquid outlet channel 9061 , the second liquid outlet channel 9063 and the third liquid outlet channel 9064 are respectively connected to a liquid adding needle 7 . Assuming that the first liquid outlet channel 9061 and the second liquid outlet channel 9062 are used for adding solution B during the preparation of product a and product b, respectively, the flow rate thresholds of the first liquid outlet channel 9061 and the second liquid outlet channel 9062 are set according to the liquid addition speed required for the preparation of product a and product b. Based on the flow rate signals collected by the distribution flow rate sensors 908 in the first liquid outlet channel 9061 and the second liquid outlet channel 9062, the openings of the distribution valves 907 on the first liquid outlet channel 9061 and the second liquid outlet channel 9062 are controlled so that the first liquid outlet channel 9061 and the second liquid outlet channel 9062 are both within the set flow rate threshold range, thereby enabling one solution storage tank 1 to be used for adding raw material solutions in the preparation of multiple different products at the same time. It should be noted that the number of liquid outlet channels 906 here is merely an example and is not a limitation of the present invention. In other embodiments, the number of liquid outlet channels 906 can also be other values, such as 4, 5, 6, or more.

[0043] In some embodiments, as Figure 6 As shown, the signal output end of the distribution flow rate sensor 908 is connected to the signal input end of the controller 8; the signal output end of the controller 8 is connected to the signal input end of the distribution valve 907, so that the opening of the distribution valve 907 can be controlled by the controller 8, thereby realizing automatic adjustment of the liquid addition rate of each liquid outlet channel 906.

[0044] In some embodiments, as Figure 7 As shown, the solution storage tank 1 includes a tank support 101, a tank body 102, a top air inlet port 103, and a liquid outlet pipe 104. The tank support 101 fixedly supports the lower end of the tank body 102. The liquid outlet pipe 104 is set at the bottom of the tank body and communicates with the interior of the tank body. The liquid outlet pipe 104 is connected to the first pipeline 2. The top of the tank body 102 is provided with a top air inlet port 103, which is connected to the gas compression tank 10 via a gas pipeline 105. The liquid filling port 106 of the solution storage tank 1 is set in the middle of the tank body 102 for adding solution for preparing the product into the solution storage tank 1.

[0045] In this embodiment, the main power for adding liquid to the solution storage tank 1 is provided by the gas compression tank 10. For example, the gas stored in the gas compression tank can be air and / or nitrogen, that is, compressed air or nitrogen and other gases are used to provide power. At this time, the pump body 3 is selected as a peristaltic pump. The peristaltic pump is used to add liquid at a uniform speed. That is, the rate of addition is adjusted by adjusting the rotation speed or working power of the peristaltic pump. The specific adjustment to achieve the control of the rate of addition has been described in detail in the previous text and will not be repeated here. Unlike the previous embodiments, the pump body 3 here, that is, the peristaltic pump, is no longer used as the main power source for adding liquid. The role of the peristaltic pump is mainly to adjust the rate of addition. At the same time, in order to cooperate with the use of the peristaltic pump, the first pipe 2 and the second pipe 4 are selected as infusion hoses, and in a certain embodiment, the electromagnetic valve 5 can be cancelled, that is, the precise control of the rate of addition can be achieved only by the peristaltic pump. It is understandable that the gas compression tank 10 and the solution storage tank 1 are usually equipped with switch valves. For example, the switch valve of the gas compression tank 10 is set at its gas outlet position, and the switch valve of the solution storage tank 1 is set at the position of the liquid outlet pipe 104. Therefore, the start of the overall liquid addition is controlled by the switch valves of the gas compression tank 10 and the solution storage tank 1. After the liquid addition is started, the peristaltic pump is adjusted to achieve uniform and uniform infusion, and the liquid addition position is fixed by the liquid addition needle, so that the preparation equipment can add liquid evenly and evenly when preparing the solution, so that the corresponding solution can be accurately and evenly added to the required position.

[0046] The above descriptions are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A uniform speed liquid adding device for a preparation device, characterized in that: It includes a solution storage tank, a first pipeline, a pump body, a second pipeline, an electromagnetic valve, a flow rate sensor and a liquid adding needle. The liquid outlet end of the solution storage tank is connected to one end of the first pipeline, the other end of the first pipeline is connected to the liquid inlet end of the pump body, the liquid outlet end of the pump body is connected to one end of the second pipeline, the other end of the second pipeline is connected to the liquid adding needle, and the electromagnetic valve and the flow rate sensor are arranged on the second pipeline.

2. The uniform speed liquid adding device of the preparation equipment according to claim 1, characterized in that: It also includes a controller, wherein a signal output end of the controller is connected to the signal output end of the pump body and the electromagnetic valve, and a signal output end of the flow rate sensor is connected to a signal input end of the controller.

3. The uniform speed liquid adding device of the preparation equipment according to claim 2, characterized in that: It also includes a liquid distributor having a liquid inlet port and multiple liquid outlet ports; wherein the liquid inlet port is connected to the end of the second pipe that is not connected to the pump body, and the multiple liquid outlet ports are each connected to a liquid adding needle.

4. The uniform speed liquid adding device of the preparation equipment according to claim 3, characterized in that: The liquid distributor includes a shell, and a liquid inlet channel, a distribution channel and at least two liquid outlet channels are arranged inside the shell; wherein, the liquid inlet channel is connected to the distribution channel, and at least two liquid outlet channels are connected to the distribution channel, one end of the liquid inlet channel is a liquid inlet port, and one end of the liquid outlet channel is a liquid outlet port.

5. The uniform speed liquid adding device of the preparation equipment according to claim 4, characterized in that: A distribution valve and a distribution flow rate sensor are provided in the liquid outlet channel.

6. The uniform speed liquid adding device of the preparation equipment according to claim 5, characterized in that: The signal output end of the distribution flow rate sensor is connected to the signal input end of the controller, and the signal output end of the controller is connected to the signal input end of the distribution valve.

7. The uniform speed liquid adding device of the preparation equipment according to claim 4, characterized in that: The liquid outlet channels are provided in three forms, namely a first liquid outlet channel, a second liquid outlet channel and a third liquid outlet channel, wherein the first liquid outlet channel, the second liquid outlet channel and the third liquid outlet channel are respectively connected to a liquid adding needle.

8. The uniform speed liquid adding device of any one of claims 1 to 7, characterized in that: The solution storage tank includes a tank body bracket, a tank body, a top air inlet port and a liquid outlet pipe; the tank body bracket fixedly supports the lower end of the tank body, the liquid outlet pipe is arranged at the bottom of the tank body and is connected to the interior of the tank body, the top air inlet port is arranged on the top of the tank body, and the top air inlet port is connected to the gas compression tank through a gas pipeline.

9. The uniform speed liquid adding device of the preparation equipment according to claim 8, characterized in that: The gas stored in the gas compression tank is air and / or nitrogen.

10. The uniform speed liquid adding device of the preparation equipment according to claim 8, characterized in that: The pump body is a peristaltic pump.

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