Automatic feeding device for chlorinated polyethylene production

Abstract

The utility model discloses an automatic feeding device for chlorinated polyethylene production, which comprises a support frame, a closed storage bin is mounted on the support frame, and a weight sensor is mounted between the closed storage bin and the support frame; a negative-pressure material suction pump is installed on the closed storage bin, an inlet of the negative-pressure material suction pump is connected with a material suction pipe, the material suction pipe is connected with the head of the telescopic rod through a connecting plate, and an outlet of the negative-pressure material suction pump is connected with the top of an inner cavity of the closed storage bin. The Roots blower is mounted at the bottom of the closed storage bin, the gate valve is mounted between the Roots blower and the closed storage bin, an outlet of the Roots blower is connected with the feeding pipe, and the tail end of the feeding pipe is connected with the premixing tank. The automatic feeding device provided by the utility model can realize automatic and accurate feeding of polyethylene raw materials, not only can solve the problem of dust raising in feeding, but also can reduce manual operation errors, shorten the feeding time and accelerate the production progress.

Description

TECHNICAL FIELD

[0001] The utility model relates to an automatic feeding device for chlorinated polyethylene production belongs to chlorinated polyethylene production technical field. BACKGROUND

[0002] Chlorinated polyethylene as a multifunctional plastic material, has a wide application in many fields.

[0003] The feeding process in the chlorinated polyethylene production process: add hydrochloric acid in advance in the premixing tank, then add a certain proportion of polyethylene particles and additives, form a premix slurry with a certain concentration after sufficient mixing, then be transported to the chlorination reaction kettle for chlorination reaction. But in this process, the ton bag packaged polyethylene particles are put into the premixing tank by lifting, bucket lifting or pipe chain lifting equipment.

[0004] At present, polyethylene particles generally have the following technical problems in the lifting feeding process:

[0005] 1. Dust will be generated in the lifting feeding process, which not only causes material waste, but also deteriorates the working environment;

[0006] 2. A small amount of material will be left in the lifting equipment, which cannot be 100% transported to the premixing tank, resulting in inaccurate reaction ratio and affecting the reaction index;

[0007] 3. The operator needs to operate on site, and the production progress is controlled by the operator, which may cause human operation errors.

[0008] In summary, the prior art has obvious inconvenience and defects in actual use, so it needs to be improved. UTILITY MODEL CONTENTS

[0009] The utility model provides an automatic feeding device for chlorinated polyethylene production in response to the deficiencies in the background art, which can realize automatic and accurate feeding of polyethylene raw materials, solve the dust problem in feeding, reduce human operation errors, shorten feeding time and speed up production progress.

[0010] To solve the above technical problems, the utility model adopts the following technical scheme:

[0011] An automatic feeding device for chlorinated polyethylene production, comprising a support frame, a closed storage bin is installed on the support frame, a weight sensor is installed between the closed storage bin and the support frame; a negative pressure suction pump is installed on the closed storage bin, the inlet of the negative pressure suction pump is connected with a suction pipe, the suction pipe is connected with the head of the telescopic rod through a connecting plate, and the outlet of the negative pressure suction pump is connected with the top of the inner cavity of the closed storage bin; a Roots blower is installed at the bottom of the closed storage bin, the outlet of the Roots blower is connected with a feeding pipe, and the end of the feeding pipe is connected with a premixing tank.

[0012] Further, the Roots blower is installed with a gate valve between the closed storage bin.

[0013] Further, the weight sensor, the negative pressure suction pump, the Roots blower and the gate valve are electrically connected with the controller.

[0014] Further, the suction pipe is provided with an extension joint.

[0015] Further, the suction pipe is provided with an extension joint.

[0016] Further, the extension rod is fixedly connected to the cantilever of the support frame in the vertical direction.

[0017] Further, the closed storage bin is provided with an exhaust port, and a dust removal cloth bag is installed outside the exhaust port.

[0018] Further, the support cage is composed of ring bodies at both ends in the vertical direction and a plurality of support rods distributed in the circumferential direction in the middle, and the bottom of the support cage is connected with the exhaust port through flanges.

[0019] Compared with the prior art, the above technical scheme has the following advantages:

[0020] In the utility model, the closed storage bin uses the negative pressure suction pump to suck the polyethylene particles into the closed storage bin, and through the equipped dust removal cloth bag, the large exhaust volume generated in the closed storage bin due to the volume change of the material can be filtered and discharged, so that the gas does not cause large pressure to the sealing system of the closed storage bin.

[0021] The closed storage bin has weight detection and automatic material suction interlocking, the powder conveying weight can be set by the Roots blower to the premixing tank, the automation of the feeding process is realized, the feeding time can be shortened, and the feeding accuracy can be ensured; the whole feeding process is closed, the on-site dust generation is reduced, the material is saved, the occurrence of dust lung occupational disease is avoided, the working environment is optimized, and the working enthusiasm of workers is greatly improved.

[0022] The utility model will be described in detail below in combination with the drawings and examples. DRAWINGS

[0023] Fig. 1 It is the structural schematic diagram of the utility model;

[0024] Fig. 2 It is the installation schematic diagram of the dust removal cloth bag;

[0025] Fig. 3 It is the electrical schematic diagram of the utility model.

[0026] In the figure, 1 - support frame, 2 - closed storage, 3 - weight sensor, 4 - negative pressure suction pump, 5 - suction pipe, 6 - expansion joint, 7 - suction port, 8 - cantilever, 9 - telescopic rod, 10 - connecting plate, 11 - Roots blower, 12 - gate valve, 13 - feeding pipe, 14 - exhaust port, 15 - dust cloth bag, 16 - support cage, 17 - controller, 18 - ton bag, 19 - premix tank. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation mode of the utility model will be described with reference to the drawings.

[0028] As Figs. 1-3 The utility model provides an automatic feeding device for chlorinated polyethylene production, including support frame 1, support frame 1 is installed with closed storage 2, and closed storage 2 is installed with weight sensor 3 between support frame 1.

[0029] Closed storage 2 is installed with negative pressure suction pump 4, and the import of negative pressure suction pump 4 is connected with suction pipe 5, and the export of negative pressure suction pump 4 is connected with the top of the inner chamber of closed storage 2.

[0030] Suction pipe 5 is equipped with expansion joint 6, and the end of suction pipe 5 away from negative pressure suction pump 4 is equipped with the suction port 7 of flared structure, for suction from ton bag 18.

[0031] Suction pipe 5 is connected with the head of telescopic rod 9 through connecting plate 10, and telescopic rod 9 is fixedly connected on the cantilever 8 of the side portion of support frame 1 along the vertical direction.Telescopic rod 9 drives suction port 7 to go up and down in the telescopic process, and it is convenient to suck away all the material in ton bag 18.

[0032] The top of closed storage 2 is equipped with exhaust port 14, and dust cloth bag 15 is installed outside exhaust port 14, and support cage 16 is installed inside dust cloth bag 15, and support cage 16 is used to support dust cloth bag 15.Support cage 16 is composed of the ring body of two ends along the vertical direction and the plurality of support rods distributed in the middle in the form of circumference, and the bottom of support cage 16 is connected with exhaust port 14 through flange.

[0033] The large exhaust capacity caused by the volume change of the material in closed storage 2 can be filtered and discharged through dust cloth bag 15, to avoid that the gas causes large pressure to the sealing system of closed storage 2.

[0034] Closed storage 2 bottom is installed with Roots blower 11, and Roots blower 11 is installed with gate valve 12 between closed storage 2, and the export of Roots blower 11 is connected with feeding pipe 13, and the tail end of feeding pipe 13 is connected with premix tank 19, and Roots blower 11 is used to blow the material to premix tank 19 by Roots blower.

[0035] The weight sensor 3, the negative pressure suction pump 4, the Roots blower 11 and the gate valve 12 in the utility model are electrically connected with the controller 17.

[0036] The specific working principle of the utility model is as follows:

[0037] The closed storage bin 2 in the utility model utilizes the negative pressure suction pump 4 to suck the polyethylene particles into the closed storage bin 2, and through being equipped with the dust removal cloth bag 15, the large exhaust volume generated in the closed storage bin 2 due to the volume change of the material can be filtered and discharged, so that the gas does not cause large pressure to the sealing system of the closed storage bin 2.

[0038] The closed storage bin 2 is provided with weight detection and automatic material suction interlocking, the powder conveying weight can be set to be blown to the premixing tank 19 by the Roots blower 11, the material blowing is automatically stopped when the set quantity is reached, the interlocking is started when the weight of the closed storage bin 2 reaches the lower limit, the negative pressure suction pump 4 is started to suck the material, the interlocking is stopped when the weight of the closed storage bin 2 reaches the upper limit, the negative pressure suction pump 4 is closed to stop sucking the material, and the automation of the material feeding process is realized, so that not only the material feeding time can be shortened, but also the accuracy of the material feeding can be ensured.

[0039] The above is the example of the best implementation mode of the utility model, wherein the part not described in detail is the common knowledge of the ordinary skilled in the art. The protection scope of the utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. An automatic feeding device for chlorinated polyethylene production, characterized in that: The utility model provides a kind of automatic feeding device for premixing tank, including support frame (1), support frame (1) is installed with closed storage (2), closed storage (2) is installed with weight sensor (3) between support frame (1);Closed storage (2) is installed with negative pressure suction pump (4), the inlet of negative pressure suction pump (4) is connected with suction pipe (5), suction pipe (5) is connected with the head of telescopic link (9) by connecting plate (10), the outlet of negative pressure suction pump (4) is connected with closed storage (2) inner chamber top;The bottom of the closed storage (2) is installed with Roots blower (11), the outlet of Roots blower (11) is connected with feeding pipe (13), feeding pipe (13) end is connected with premixing tank (19).

2. The automatic feeding device for the production of chlorinated polyethylene according to claim 1, characterized in that: The Roots blower (11) is installed with gate valve (12) between closed storage (2).

3. The automatic feeding device for the production of chlorinated polyethylene according to claim 2, characterized in that: The weight sensor (3), negative pressure suction pump (4), Roots blower (11) and gate valve (12) are electrically connected with controller (17).

4. The automatic feeding device for the production of chlorinated polyethylene according to claim 1, characterized in that: Telescopic joint (6) is equipped on the suction pipe (5).

5. The automatic feeding device for the production of chlorinated polyethylene according to claim 4, characterized in that: The end of suction pipe (5) away from negative pressure suction pump (4) is equipped with the suction port (7) of horn structure.

6. The automatic feeding device for the production of chlorinated polyethylene according to claim 1, characterized in that: The telescopic link (9) is fixedly connected on the cantilever (8) of support frame (1) side in vertical direction.

7. The automatic feeding device for the production of chlorinated polyethylene according to claim 6, characterized in that: The upper portion of closed storage (2) is equipped with exhaust port (14), dust cloth bag (15) is installed outside exhaust port (14), and support cage (16) is installed inside dust cloth bag (15).

8. The automatic feeding device for the production of chlorinated polyethylene according to claim 7, characterized in that: Support cage (16) is composed of ring body at both ends in vertical direction and multiple support rods distributed in the middle in the form of circle, and the bottom of support cage (16) is connected with exhaust port (14) through flange.

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