Safety protection device for plate-and-frame filter press

Abstract

The utility model discloses a safety protection device for a plate-and-frame filter press, which relates to the field of filter pressing devices, and comprises a protection main body, a bulge is processed at one end of the protection main body, and the bulge is used for being connected with a filtrate hole of a filter plate in an inserting manner; according to the plate-and-frame filter press, the structure of the plate-and-frame filter press does not need to be changed, the plate-and-frame filter press can be directly inserted into an original filtrate hole of a filter plate through the protrusions on the side faces, and the protection body has a certain length and can separate a safe space for workers to operate. Under the condition that the filter plate moves or falls down due to misoperation, electrical equipment failure and other reasons, workers are prevented from being squeezed or crushed, and the safety protection effect is achieved; and the device is applicable to most plate-and-frame filter presses in the market, and is high in universality.

Description

Technical Field

[0001] The utility model relates to the field of pressure filtration devices, and particularly to a safety protection device for a plate and frame filter press. Background Art

[0002] A plate and frame filter press is a machine for realizing solid-liquid separation of slurry. Due to advantages such as good airtightness, high filtration pressure, easy washing, and strong adaptability to slurry, plate and frame filter presses are widely used in industries such as water treatment, metallurgy, coal washing, food, medicine, and chemical industry.

[0003] In urban sewage treatment plants, sludge usually needs to be dehydrated before incineration or co-disposal in a cement kiln. The conditioned and filtered sludge is sent between the filter plates of a plate and frame filter press through a high-pressure pump, and the water in the sludge is extruded by the movement of the filter plates. For the requirements of sludge filtration accuracy, filtration speed, etc., filter cloths are coated on both sides of each filter plate. The filter plates and filter cloths need to be regularly repaired and replaced. When cleaning, replacing the filter cloth or repairing the filter plates, workers need to enter the space between two adjacent filter plates for operation. There are often situations where the filter plates move due to human misoperation, malfunction of filter plate switches, or short circuits of electrical equipment, resulting in workers being squeezed or crushed, seriously threatening the safety of workers.

[0004] The existing patent with the publication number 201320856241.7 discloses a plate and frame filter press with limit protection, which conducts limit protection through structures such as a thrust plate, a cross beam, and a limit rod. However, adding this limit protection structure to a traditional plate and frame filter press requires a major transformation of the plate and frame filter press. In actual applications, many factories do not have the conditions to transform the plate and frame filter press. Therefore, a simpler, more general, and more economical technical solution is needed to solve the safety hazard problems existing in the cleaning and maintenance of traditional plate and frame filter presses. Content of the Utility Model

[0005] Aiming at the deficiencies of the above-mentioned existing technologies, the utility model provides a safety protection device for a plate and frame filter press, which can be detachably applied to a traditional plate and frame filter press to play a safety protection role, protect the safety of workers during cleaning, repair, and maintenance work, has strong versatility, and is simple, light in structure, can be operated by a single person, and has a low manufacturing cost.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A safety protection device for a plate and frame filter press includes a protection main body. One end of the protection main body is processed with a protrusion, and the protrusion is used for plug-in connection with the filtrate holes of the filter plates; the length of the protection main body is not less than 50 cm.

[0008] As a further implementation method, the protection body is made of nylon material, with a relatively small density, which can reduce the weight on the basis of meeting the strength requirements, facilitate single-person operation, and is safe and lightweight.

[0009] As a further implementation method, the length of the protection body is not greater than 60 cm, avoiding being too large and heavy for inconvenient use.

[0010] As a further implementation method, the protection body is cylindrical, which is convenient to manufacture and has a low cost.

[0011] As a further implementation method, the diameter of the protection body is 18 cm.

[0012] As a further implementation method, a groove is provided at one end of the protection body away from the protrusion to reduce the overall weight of the device and facilitate the operation of the staff.

[0013] As a further implementation method, the groove extends axially inward along the protection body, and the extension length is 1 / 3 - 1 / 2 of the length of the protection body, which is both lightweight and can ensure the strength of the device, improving the reliability of the safety protection function.

[0014] As a further implementation method, a handle is provided at the top of the protection body for easy taking, placing and installation.

[0015] As a further implementation method, the handle is made of carbon steel structure, and the handle is threadedly connected to the protection body.

[0016] As a further implementation method, a reflective tape is pasted on the outer surface of the protection body to play a role of reminder and warning, and improve the safety awareness of workers.

[0017] As a further implementation method, the protrusion is in interference connection with the filter plate.

[0018] As a further implementation method, the length of the protrusion is the same as the thickness of the filter plate.

[0019] Adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0020] 1. The present utility model does not need to change the structure of the plate and frame filter press. The protrusion on the side can be directly inserted into the original filtrate hole of the filter plate. The protection body has a certain length, which can separate a safe space for workers to operate. In the case of filter plate movement or filter plate falling down due to misoperation, electrical equipment failure, etc., it can prevent workers from being squeezed or injured, playing a role of safety protection; and it is applicable to most plate and frame filter presses on the market, with strong versatility.

[0021] 2. The structure of the present utility model is simple and lightweight, can be operated by a single person, and has a low manufacturing cost. Description of the Drawings

[0022] The accompanying drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0023] Figure 1 Structural schematic of the embodiment of the present utility model Figure 1 ;

[0024] Figure 2 Structural schematic of the embodiment of the present utility model Figure 2 ;

[0025] Figure 3 Installation schematic diagram of the embodiment of the present utility model.

[0026] In the figure: 1, protection main body; 2, protrusion; 3, groove; 4, handle; 5, filter plate; 6, filtrate hole. Detailed implementation manners

[0027] It should be noted that the following detailed descriptions are all illustrative and are intended to provide a further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0028] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0029] Embodiment 1

[0030] Most of the plate and frame filter presses on the market today do not provide safety protection for the work of overhauling filter plates and replacing filter cloths. For example, for the plate and frame filter presses with a filtration area of 800 square meters produced by the two largest domestic manufacturers, Shandong Jingjin Company and Hangzhou Xingyuan Company, when it is necessary to maintain and overhaul each filter plate one by one, all the filter plates on one side of the filter plate to be overhauled are automatically moved and pulled apart by a certain distance through a remote control manipulator. This distance is usually about 80 cm, and workers operate in the space separated by the filter plates. However, sometimes due to uncertain reasons such as remote control failures and misoperations, the manipulator will pull the filter plates, resulting in the originally separated filter plates moving closer to the filter plate being overhauled and squeezing the staff; or sometimes, due to other workers accidentally touching or operating mistakes, the separated filter plates will tilt and fall, resulting in injuring the staff working. The above situations lead to obvious safety hazards in the sludge dewatering workshop of the factory, and safety accidents often occur during the replacement of filter cloths and the overhaul of filter plates, causing personal injuries and significant property losses.

[0031] In order to address the safety defects existing in the actual application of existing traditional plate and frame filter presses, and considering the technical conditions and cost limitations of ordinary factories, this application aims to provide a safe, lightweight, highly efficient and economical safety protection device. It does not require any structural changes to the existing plate and frame filter press, but uses the original filtrate holes on the plate and frame filter press for detachable installation. After one filter plate is overhauled, it can be removed and then installed on the next filter plate to be overhauled. It can be operated by one person. Through on-site test verification, it has high safety protection intensity, is convenient and efficient to use, and effectively improves the production safety of the sludge dewatering workshop.

[0032] In a typical embodiment of this application, a safety protection device for a plate and frame filter press is provided, as Figure 1-2 shown, which includes a protection main body 1. One end of the protection main body 1 is processed with a protrusion 2, and the protrusion 2 is used for plug-in connection with the filtrate hole 6 of the filter plate 5; the length of the protection main body 1 is not less than 50 cm.

[0033] Specifically, the protection main body has a certain length. After the safety protection device is installed on one side of the filter plate, it can separate the filter plate to be overhauled from the filter plates pulled apart on the other side; considering the occupied space when workers operate facing the filter plate, the length of the protection main body is set to be not less than 50 cm to protect the safety of the operating personnel and avoid safety accidents such as squeezing or injuring people.

[0034] For the convenience of installation, disassembly and to meet the requirements of single-person operation, the safety protection device of this embodiment is installed by plugging. As Figure 1 、 2As shown in the figure, a cylindrical protrusion 2 is processed at one end of the protection main body 1. The shape and size of the protrusion 2 match those of the original filtrate holes 6 on the filter plate 5, and it can be inserted into the filtrate holes 6. To ensure reliable insertion, the thickness of the protrusion 2 is the same as that of the filter plate 5. On the one hand, it can ensure the insertion depth of the protrusion as much as possible. On the other hand, it can prevent the protrusion from protruding out of the filtrate hole and abutting against the rear filter plate, which will form a pressure away from the filter plate to be overhauled on the protection main body and cause unstable insertion.

[0035] In this embodiment, the protection main body is made of nylon material. Compared with metal materials such as steel and iron, nylon has a smaller density, which can effectively reduce the weight on the basis of meeting the strength requirements, making it convenient for a single person to pick up and operate, and it is safe and light.

[0036] In addition, in order to reduce the weight of the safety protection device and improve its portability to meet the needs of single-person operation by on-site workers, this embodiment also has the following characteristics:

[0037] First, the length of the protection main body is not greater than 60 cm to avoid being too long and heavy for inconvenient use.

[0038] Second, as Figure 1 shown in the figure, a groove 3 is provided at one end of the protection main body 1 away from the protrusion to reduce the overall weight of the device. Preferably, the groove extends inward along the axial direction of the protection main body, and the extension length is 1 / 3 - 1 / 2 of the length of the protection main body. While reducing the weight, it can ensure the structural strength of the device and improve the reliability of the safety protection function.

[0039] Third, a handle 4 is provided on the top of the protection main body 1 to facilitate workers to pick up and place the safety protection device. Specifically, the handle is made of carbon steel structure, and the handle 4 is fixed on the protection main body 1 in a threaded connection manner.

[0040] In addition, theoretically, the protection main body can be set in various shapes such as rectangular, oval, circular, etc., all of which can isolate adjacent filter plates and play a safety protection role for the personnel in the operation space. Preferably, in this embodiment, the protection main body is set as a cylinder. On the one hand, because the raw material is in the form of a nylon rod, it is more convenient and cost-effective to process the protection main body into a cylinder. On the other hand, with a circular cross-section, it can also reduce the volume and weight of the protection main body at the same width.

[0041] In this embodiment, the diameter of the protection main body is 18 cm, which can effectively ensure the structural strength and will not be too thick and heavy.

[0042] Considering the stability of the connection between the safety protection device and the filter plate and the ease of operation, in this embodiment, the protrusion 2 and the filtrate hole 6 are connected in a transitional manner. The diameter of the protrusion is 2 mm smaller than the diameter of the filtrate hole, and it can be inserted into the filtrate hole by a single person to ensure stable installation. Generally, the thickness of the filter plate of the plate and frame filter press on the market is 10 cm, and the length of the protrusion is the same as the thickness of the filter plate.

[0043] In addition, a reflective tape is attached to the outer circumferential surface of the protection main body, which plays a role of reminder and warning. It can remind the workshop workers to install the safety protection device first during operation, and warn other people not to approach the operation area to prevent accidental contact, thereby improving the safety awareness of the workers.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those of ordinary skill in the art should understand that the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A safety protection device for a plate and frame filter press, characterized in that, It includes a protection main body, one end of the protection main body is processed with a protrusion, and the protrusion is used for plugging and connecting with the filtrate holes of the filter plate; the length of the protection main body is not less than 50 cm.

2. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, The protection main body is made of nylon material.

3. The safety protection device for a plate and frame filter press according to claim 1, wherein, The length of the protection main body is not greater than 60 cm.

4. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, One end of the protection main body away from the protrusion is provided with a groove.

5. The safety protection device for a plate and frame filter press according to claim 4, characterized in that, The groove extends axially inward along the protection main body, and the extension length is 1 / 3 - 1 / 2 of the length of the protection main body.

6. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, A handle is arranged on the top of the protection main body.

7. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, The handle is made of carbon steel structure, and the handle is threadedly connected with the protection main body.

8. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, The protection main body is cylindrical.

9. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, A reflective tape is pasted on the outer surface of the protection main body.

10. The safety protection device for a plate and frame filter press according to claim 1, characterized in that, The protrusion is in transitional connection with the filter plate; the length of the protrusion is the same as the thickness of the filter plate.

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