Double pinch valve type powder discharger

Abstract

The utility model provides a powder discharger with double pinch valves. The powder discharger comprises a buffer storage bin, a double-outlet hopper, a first pinch valve, a second pinch valve and a discharging barrel section. The buffer storage bin is installed on the supporting frame, and the bottom of the buffer storage bin communicates with the double-outlet hopper. Two discharging areas are arranged in the double-outlet hopper and correspond to the first discharging port and the second discharging port respectively. The first discharging port is communicated with the discharging barrel section through a first pinch valve, the second discharging port is communicated with the discharging barrel section through a second pinch valve, and a storage barrel is arranged below the discharging barrel section and arranged on a platform scale. The first pinch valve, the second pinch valve and the platform scale are all connected to a controller. The problems that foreign matter powder permeates, particle materials are damaged and the deformation quantity is large are solved, the discharging speed is accurately controlled, and the discharging precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to powder discharge field, especially a kind of double pinch valve formula powder discharge device. BACKGROUND

[0002] Powder discharge device mainly adopts the form of rotary valve, screw feeder, realizes the effect of controlling flow, and is suitable for the quantitative feeding and batching of powder materials in various industrial production environments.

[0003] Rotary valve has the functions of controlling flow, locking air and stabilizing air pressure in system in industrial applications.Working principle is: through motor drive to drive rotor rotation, material falls down and fills in the empty space of rotor blade by gravity, and is discharged from lower outlet with blade rotation.Rate of discharge flow can be changed by frequency conversion, to achieve the effect of quantitative feeding.For the metering feeding process of powder material, there is generally no problem, but for granular material, rotor and shell will damage granular material during rotation, and the proportion is large.

[0004] Screw feeder is generally used for physical conveying, metering and batching of materials in industrial production environment.Working principle: through motor drive screw shaft rotation, material is pushed to discharge port by forward displacement generated by screw blade rotation, to discharge material.The driving speed of feeder is changed by frequency converter, to change the material flow of feeder, to meet the requirement of quantitative feeding.The principle of screw feeder is to push material to move, so a certain extrusion force is generated, causing deformation of granular material.

[0005] Conventional discharge device mostly adopts electric drive form, whether rotating or vibrating, to avoid friction between material and equipment surface, increase the incorporation rate of metal powder, and cannot meet the use requirement in some strict industries and use environments;The complexity of structure causes high maintenance and repair cost;For relatively soft granular material, material deformation rate is high. UTILITY MODEL CONTENT

[0006] Therefore, the utility model aims at providing a double pinch valve formula powder discharge device, solves the problems of foreign powder penetration, granular material damage and large deformation, realizes accurate control of discharge speed, and guarantees discharge accuracy.

[0007] To achieve the above object, the technical scheme of the utility model is as follows:

[0008] A double pinch valve formula powder discharge device, comprising a buffer bin, a double-outlet hopper, a first pinch valve, a second pinch valve and a discharge cylinder section.

[0009] The buffer bin is installed on the support frame, and the bottom of the buffer bin is connected with the double-outlet hopper in communication.

[0010] The double-outlet hopper is internally provided with two discharge areas corresponding to the first discharge port and the second discharge port respectively;

[0011] The first discharge port is communicated with the discharge cylinder section through a first pinch valve, and the second discharge port is communicated with the discharge cylinder section through a second pinch valve,

[0012] The lower portion of the discharge cylinder section is provided with a storage barrel, and the storage barrel is arranged on a platform scale;

[0013] The first pinch valve, the second pinch valve and the platform scale are all connected to a controller.

[0014] Further, the two discharge areas of the double-outlet hopper are respectively provided with an air-assisted butterfly valve.

[0015] Further, a manual ball valve is further arranged between the second pinch valve and the second discharge port.

[0016] Further, the diameter of the first discharge port is greater than that of the second discharge port;

[0017] The first pinch valve and the second pinch valve are both air bag type pinch valves;

[0018] The diameter of the passage formed in the first pinch valve is greater than that of the passage formed in the second pinch valve.

[0019] Further, the two discharge areas have the same capacity, the diameter of the first discharge port is a, the diameter of the second discharge port is b, and the ratio of a to b ranges from 3:1 to 5:1.

[0020] Further, a metering module is arranged in the buffer bin, and the metering module is connected to the controller.

[0021] Compared with the prior art, the double-pinch valve type powder discharger has the following advantages:

[0022] The double-pinch valve type powder discharger adopts a pneumatic control form, uses a structure of large and small valves in cooperation, ensures the reliability of large flow through the large valve, and realizes flexible adjustment through the cooperation of the small valve and the manual valve, so that the powder discharger can be used for metering and quantitative feeding. The control is simple and convenient, the maintenance cost is low, the deformation rate of the soft material during discharging is effectively reduced, the fusion rate of the metal powder is reduced, the production and processing cost of the powder discharger is reduced, and the structure is more compact.

[0023] The problems of foreign powder penetration, particle material damage and large deformation are solved, the discharging speed is accurately controlled, and the discharging precision is ensured. The new type of powder discharger is designed, the air bag type pinch valve is used for controlling opening and closing, the friction and extrusion during the discharging process are solved without valve core, the self-weight discharging form is adopted, the structure is simple, the maintenance is simple, the production and processing cost is reduced, and the stability and reliability are improved. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram of a double-clamp valve type powder discharger according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the closed state of a double-clamp valve type powder discharger according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the full-speed discharge state of a double-clamp valve type powder discharger according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the slow discharge state of a double-clamp valve type powder discharger according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram showing the completed quantitative feeding state of a double-clamp valve type powder feeder according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Buffer hopper; 2. Double outlet hopper; 21. Flow-aiding air butterfly; 3. No. 1 machine pipe valve; 4. No. 2 clamp valve; 5. Discharge cylinder section; 6. Manual ball valve; 7. Storage tank; 8. Platform scale. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0036] A double-clamp-pipe valve type powder discharger, as shown in the figure, comprises a buffer bin 1, a double-outlet hopper 2, a first clamp-pipe valve, a second clamp-pipe valve 4 and a discharge cylinder section 5. Figures 1-5 The buffer bin 1 is mounted to a support frame, and the bottom of the buffer bin 1 is in communication with the double-outlet hopper 2.

[0037] The double-outlet hopper 2 is internally provided with two discharge areas, and the two discharge areas correspond to a first discharge port and a second discharge port respectively.

[0038] The first discharge port is in communication with the discharge cylinder section 5 through the first clamp-pipe valve, the second discharge port is in communication with the discharge cylinder section 5 through the second clamp-pipe valve 4, and there is a hose between the second clamp-pipe valve 4 and the discharge cylinder section 5.

[0039] The discharge cylinder section 5 is provided below with a storage barrel 7, and the storage barrel 7 is arranged on a platform scale 8.

[0040] The first clamp-pipe valve, the second clamp-pipe valve 4 and the platform scale 8 are all connected to a controller.

[0041] The first clamp-pipe valve, the second clamp-pipe valve 4 and the platform scale 8 are all connected to a controller.

[0042] Preferably, the two discharge areas of the double-outlet hopper 2 are respectively provided with an air-assisted butterfly valve 21.

[0043] Preferably, the second pinch valve 4 and the second discharge port are further provided with a manual ball valve 6.

[0044] Preferably, the diameter of the first discharge port is greater than the diameter of the second discharge port.

[0045] The first and second pinch valves 4 are both air bag type pinch valves.

[0046] The diameter of the passage formed in the first pinch valve is greater than the diameter of the passage formed in the second pinch valve 4.

[0047] Preferably, the two discharge areas have the same capacity, the diameter of the first discharge port is a, the diameter of the second discharge port is b, and the ratio of a to b is in the range of 3:1-5:1.

[0048] Preferably, the buffer bin 1 is provided with a metering module connected to a controller.

[0049] By redesigning the discharger and applying the air bag type pinch valve to the discharger, the precise stroke and effective closing force of the air bag type pinch valve can ensure long-term stable operation. The pinch valve has no rotating valve core and is a full passage valve, and when closed, the air bag is contracted, which has little effect on particulate materials. By utilizing the flow control advantage, the discharging requirements of the discharger are realized.

[0050] The double pinch valve type powder discharger is designed from top to bottom, mainly for powder or particulate materials, and adopts gravity feeding form as the principle of simplifying structure. A flange type double-outlet hopper 2 is arranged at the top, and the flange connection is convenient for connecting with the upper main equipment. The hopper is provided with an air-assisted butterfly valve 21 to assist the uniform falling of the materials. The discharge port is designed with large and small diameters, and the size of the large diameter discharge port depends on the maximum flow requirement, and the size of the small diameter discharge port depends on the minimum flow requirement. Due to the bridging characteristics of powder or particulate materials, the small diameter discharge port is usually slightly larger than the corresponding flow value to ensure effective discharge flow. A large diameter air bag type pinch valve is arranged below the large diameter discharge port, and a manually adjustable ball valve and a small diameter air bag type pinch valve are arranged below the small diameter discharge port, forming two large and small passages. The small passage is adjusted by adjusting the manually adjustable ball valve 6, increasing the adaptability of the discharge flow. The large and small passages are collected through the discharge cylinder section 5 to ensure the uniqueness of the inlet and outlet ports of the double pinch valve type powder discharger. The double passage connection form is bolted and threaded, so the installation is considered convenient. The small passage is selected in a local soft connection form, which is simple and fast to install.

[0051] In practical application process, generally cooperate metering use, the upper configuration certain volume material bin, the material bin is equipped with metering module or is equipped with platform scale 8, downwardly to the material bag, the barrel, equipment quantitative feeding;

[0052] As shown in Figure 2 , the starting state valve is all closed, the material receiving equipment gives the material signal;

[0053] As shown in Figure 3 , through the controller controls the double-sided pinch valve to open, the flow assisting butterfly valve 21 works, the double passage simultaneously carries out the material discharging, at this time, the maximum flow discharging is carried out;

[0054] As shown in Figure 4 , according to the feedback of the metering signal, when reaching the material discharging amount, the first pinch valve closing signal is given, the first pinch valve is closed, the second pinch valve 4 is slowly discharged until the material amount is added;

[0055] As shown in Figure 5 , the second pinch valve 4 closing signal is given, the second pinch valve 4 is closed, and the quantitative feeding is completed. A double pinch valve type powder discharger ensures the quantitative feeding time and precision, prevents the foreign powder from penetrating, effectively prevents the deformation of the material caused by extrusion or shearing; the pneumatic structure effectively reduces the maintenance cost, the control is simple, and the production and assembly are simple.

[0056] The above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A double pinch valve powder discharger characterized by: The device comprises a buffer bin, a double-outlet hopper, a first pinch valve, a second pinch valve and a discharge cylinder section; The buffer bin is installed on a support frame, and the bottom of the buffer bin is connected to the double-outlet hopper in communication; The double-outlet hopper is internally provided with two discharge areas, and the two discharge areas correspond to the first discharge port and the second discharge port respectively; The first discharge port is connected to the discharge cylinder section through the first pinch valve, and the second discharge port is connected to the discharge cylinder section through the second pinch valve, A storage barrel is arranged below the discharge cylinder section, and the storage barrel is arranged on a platform scale; The first pinch valve, the second pinch valve and the platform scale are connected to a controller.

2. A double-pipe valve type powder discharger according to claim 1, characterized in that: The two discharge areas of the double-outlet hopper are respectively provided with an air-assisted butterfly valve.

3. A double-pipe valve type powder discharger according to claim 1, characterized in that: A manual ball valve is further arranged between the second pinch valve and the second discharge port.

4. The double-pipe valve type powder discharger according to claim 1, characterized in that: The diameter of the first discharge port is greater than that of the second discharge port; The first pinch valve and the second pinch valve are both air bag type pinch valves; The diameter of the passage formed in the first pinch valve is greater than that of the passage formed in the second pinch valve.

5. A double-pipe valve type powder discharger according to claim 1, characterized in that: The two discharge areas have the same capacity, the diameter of the first discharge port is a, the diameter of the second discharge port is b, and the ratio of a to b is in the range of 3:1-5:

1.

6. A double-pipe valve type powder discharger according to claim 1, characterized in that: A metering module is arranged in the buffer bin, and the metering module is connected to the controller.

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