Filter pressing tank for producing cellulose ether

Abstract

The utility model relates to the technical field of filter pressing tanks, and discloses a filter pressing tank for producing cellulose ether, which comprises a filter pressing tank main body, and an annular frame is fixedly mounted on the inner side wall of the filter pressing tank main body; a filter plate placed on the annular frame is arranged in the filter pressing tank main body; the filter pressing tank comprises a filter pressing tank main body, a filter plate is fixedly mounted on the outer surface of the filter pressing tank main body, L-shaped supports which are symmetrically arranged are fixed to the upper surface of the filter plate, an annular sleeve is fixed between the two L-shaped supports, an L-shaped plate is fixedly mounted on the outer surface of the filter pressing tank main body, and the L-shaped plate is rotationally connected with a supporting rod through a bearing. Through cooperative use of a supporting rod, an electric push rod, a clamping mechanism, an annular sleeve and other components, taking out and placing of a filter plate and taking out of a filter cake can be automatically completed, physical labor of operators is greatly reduced, taking and placing operation is more convenient, the use effect of the device is improved, and the actual use requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, specifically a filter press for the production of cellulose ethers. Background Technology

[0002] Cellulose ethers are widely used polymers. One process in their production is pressure filtration. After synthesis, cellulose ethers require post-processing to remove mixed solvents containing benzene compounds such as toluene and alcohols such as isopropanol and methanol.

[0003] Currently, when using a filter press, the filter plate itself needs to be removed along with the filter media on the filter screen. The filter plate and filter media are quite heavy, and manually removing and placing the filter plate is inconvenient, increases the labor intensity of personnel, and results in poor performance. Therefore, we have proposed a filter press for cellulose ether production to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a filter press for the production of cellulose ethers. It solves the problem that when removing the filter media on the filter screen inside the filter press, the filter plate needs to be removed along with the filter media. The filter plate and filter media are relatively heavy, and the process of manually removing and placing the filter plate is inconvenient and increases the labor intensity of personnel.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a filter press for the production of cellulose ethers, comprising a filter press body, wherein an annular frame is fixedly installed on the inner side wall of the filter press body;

[0006] The filter press tank body is equipped with a filter plate placed on a ring frame;

[0007] The upper surface of the filter plate is fixed with L-shaped brackets arranged symmetrically, and an annular sleeve is fixed between the two sets of L-shaped brackets.

[0008] An L-shaped plate is fixedly installed on the outer surface of the filter press body. The L-shaped plate is rotatably connected to a support rod via a bearing. An electric push rod is fixedly installed at the top of the support rod via a connecting plate.

[0009] The output end of the electric push rod is fixedly equipped with a snap-fit ​​mechanism, which can snap onto the annular sleeve to achieve the connection between the electric push rod and the annular sleeve.

[0010] Preferably, the outer surface of the filter plate is adapted to the inner diameter of the filter press body, and the output end of the electric push rod corresponds to the center of the filter press body.

[0011] Preferably, the locking mechanism includes a cylindrical block fixed to the output end of the electric push rod and a through hole opened on the cylindrical block. A fixed plate arranged symmetrically is provided in the through hole. A pin slides on the fixed plate. An expansion rod is fixedly installed at the ends of the two sets of pins that are far apart from each other. A spring is wound around the surface of the pin. The two ends of the spring are fixedly connected to the expansion rod and the fixed plate, respectively. An electromagnet is fixedly installed at the ends of the two sets of pins that are close to each other. An iron plate is provided between the two sets of electromagnets and the iron plate is fixedly connected to the cylindrical block.

[0012] Preferably, the fixed disk and the cylindrical block are fixedly connected. The fixed disk has a movable hole that matches the pin. The pin and the fixed disk are slidably connected through this movable hole. The pin has a T-shaped structure design, and the inner diameter of the through hole matches the outer diameter of the expansion rod.

[0013] Preferably, an anti-slip rotating sleeve is fixedly installed on the surface of the support rod.

[0014] Preferably, a positioning rod is fixed on the lower surface of the anti-slip rotating sleeve, and an arc groove is formed on the upper surface of the L-shaped plate. One end of the positioning rod is located in the arc groove. When the positioning rod is screwed from one end of the positioning groove to the other end, the support rod is screwed and positioned 180°.

[0015] Beneficial effects

[0016] This invention provides a filter press for the production of cellulose ethers. Compared with the prior art, it has the following advantages:

[0017] The filter press produced by this cellulose ether, through the coordinated use of components such as support rods, electric push rods, snap-fit ​​mechanisms, and annular sleeves, can automatically complete the removal and placement of filter plates and the removal of filter cakes, greatly reducing the physical labor of operators, making the handling and placement operations more convenient, improving the effectiveness of the device, and meeting actual usage needs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the snap-fit ​​mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the anti-slip rotating sleeve and positioning rod connecting parts of this utility model.

[0022] In the diagram: 101, filter press body; 102, annular frame; 103, filter plate; 104, L-shaped bracket; 105, annular sleeve; 106, L-shaped plate; 107, support rod; 108, electric push rod; 109, anti-slip rotating sleeve; 110, positioning rod; 111, positioning groove; 2, snap-fit ​​mechanism; 201, cylindrical block; 202, expansion rod; 203, pin; 204, spring; 205, electromagnet; 206, fixed plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown:

[0025] A filter press for producing cellulose ethers includes a filter press body 101, and an annular frame 102 is fixedly installed on the inner side wall of the filter press body 101.

[0026] The filter press body 101 is equipped with a filter plate 103 placed on a ring frame 102;

[0027] The upper surface of the filter plate 103 is fixed with symmetrically arranged L-shaped brackets 104, and an annular sleeve 105 is fixed between the two sets of L-shaped brackets 104.

[0028] An L-shaped plate 106 is fixedly installed on the outer surface of the filter press body 101. The L-shaped plate 106 is rotatably connected to a support rod 107 via a bearing. An electric push rod 108 is fixedly installed on the top of the support rod 107 via a connecting plate. The outer surface of the filter plate 103 is adapted to the inner diameter of the filter press body 101. The output end of the electric push rod 108 corresponds to the center of the filter press body 101.

[0029] The output end of the electric push rod 108 is fixedly equipped with a snap-fit ​​mechanism 2, which can snap onto the annular sleeve 105 to realize the connection between the electric push rod 108 and the annular sleeve 105.

[0030] The snap-fit ​​mechanism 2 includes a cylindrical block 201 fixed to the output end of the electric push rod 108 and a through hole opened on the cylindrical block 201. A fixed plate 206 arranged symmetrically is provided in the through hole. A pin 203 slides on the fixed plate 206. An expansion rod 202 is fixedly installed at the ends of the two sets of pins 203 that are far apart from each other. A spring 204 is wound around the surface of the pin 203. The two ends of the spring 204 are fixedly connected to the expansion rod 202 and the fixed plate 206 respectively. An electromagnet 205 is fixedly installed at the ends of the two sets of pins 203 that are close to each other. An iron plate is provided between the two sets of electromagnets 205 and the iron plate is fixedly connected to the cylindrical block 201. The two sets of electromagnets 205 have opposite magnetic poles.

[0031] The fixed plate 206 and the cylindrical block 201 are fixedly connected. The fixed plate 206 has a moving hole that matches the pin 203. The pin 203 and the fixed plate 206 are slidably connected through this moving hole. The pin 203 has a T-shaped structure design, and the inner diameter of the through hole matches the outer diameter of the expansion rod 202.

[0032] An anti-slip rotating sleeve 109 is fixedly installed on the surface of the support rod 107. A positioning rod 110 is fixed on the lower surface of the anti-slip rotating sleeve 109. An arc groove is opened on the upper surface of the L-shaped plate 106. One end of the positioning rod 110 is located in the arc groove. When the positioning rod 110 is screwed from one end of the positioning groove 111 to the other end, the support rod 107 can be screwed and positioned by 180°.

[0033] In this embodiment: When using the filter press for cellulose ether production, the cover of the filter press body 101 is opened, and the material is fed into the filter press body 101 and falls onto the filter plate 103. The annular frame 102 supports the filter plate 103. Then, the cover of the filter press body 101 is sealed, and a clamping device connects and seals the cover to the compression cylinder of the filter press body 101. Figure 1 As shown, the pressing device is connected by bolts and nuts. The bolts are hinged to the surface of the filter press body 101 through a hinge shaft. At the same time, the cover plate of the filter press body 101 has a slot for the bolt to be inserted.

[0034] By checking whether the pressure gauge, safety valve, and pressure relief device on the filter press body 101 are working properly, and if they are, the filter press body 101 is pressurized by a pressure pump. Based on the pressure difference, when the material to be filtered enters the filter press body 101 under the pressure of the pump, the material passes through the filter plate 103. Because the filter plate 103 has a microporous structure, it can intercept solid particles while allowing liquid to pass through. As filtration proceeds, solid particles gradually form a filter cake on the filter plate 103, further blocking solid particles in the subsequent material.

[0035] When the filter plate 103 and filter cake are removed, the support rod 107 is screwed on. The outer surface of the support rod 107 is fixedly installed with an anti-slip rotating sleeve 109. The anti-slip rotating sleeve 109 is designed to increase the friction between the support rod 107 and the palm of the hand, making it easier to rotate the support rod 107.

[0036] The rotation of the support rod 107 drives the anti-slip rotating sleeve 109 and the positioning rod 110 to rotate synchronously until the positioning rod 110 rotates to one end of the positioning groove 111. The positioning rod 110 and the positioning groove 111 limit the support rod 107, so that the snap-fit ​​mechanism 2 on the electric push rod 108 corresponds to the center of the filter press body 101, and the annular sleeve 105 is concentrically set with the filter press body 101, so that the snap-fit ​​mechanism 2 corresponds to the annular sleeve 105.

[0037] Next, the cover plate of the filter press body 101 is removed, and then the electric push rod 108 is started, so that its output shaft extends, thereby driving the snap-fit ​​mechanism 2 to move down synchronously until the cylindrical block 201 of the snap-fit ​​mechanism 2 is located at the position of the annular sleeve 105. Then, the two sets of electromagnets 205 are energized. The two sets of electromagnets 205 have opposite magnetic poles, and the electromagnets 205 and the iron sheet (not shown in the figure) are magnetically attracted. When the electromagnets 205 approach and attract the iron sheet, they pull the pin 203 to move, and at the same time drive the expansion rod 202 to move, so that the expansion rod 202 is completely pulled into the cylindrical block 201. At the same time, the expansion rod 202 compresses the spring 204.

[0038] When the expansion rod 202 is fully pulled into the cylindrical block 201, the electric push rod 108 is activated to drive the cylindrical block 201 to move down synchronously, so that part of the cylindrical block 201 passes through the annular sleeve 105. At the same time, the two sets of expansion rods 202 are located below the annular sleeve 105, and the outer diameter of the cylindrical block 201 matches the inner diameter of the annular sleeve 105. When the cylindrical block 201 is partially inserted into the annular sleeve 105, it can limit the annular sleeve 105 and prevent the annular sleeve 105 and the cylindrical block 201 from shaking due to the gap, which would affect the subsequent insertion of the filter plate 103 into the filter press tank body 101.

[0039] When the two sets of expansion rods 202 are below the annular sleeve 105, the electromagnet 205 is de-energized. The spring 204, which is under compression, rebounds, driving the two sets of expansion rods 202 to extend outwards. This causes part of the expansion rods 202 to protrude from the cylindrical block 201. At this point, the diameter of the ends of the two sets of expansion rods 202 that are furthest apart is larger than the inner diameter of the annular sleeve 105. When the electric push rod 108 retracts, it causes the cylindrical block 201 and the expansion rods 202 to move upwards synchronously. Since the diameter of the ends of the two sets of expansion rods 202 that are furthest apart is larger than the inner diameter of the annular sleeve 105, it causes the annular sleeve 105 to move upwards. The L-shaped bracket 104 drives the filter plate 103 to move upward until the filter plate 103 and the compressed filter cake are removed from the filter press tank body 101. Then, the support rod 107 is rotated, and the anti-slip rotating sleeve 109 drives the positioning rod 110 to slide in the positioning groove 111 and rotate to the other end of the positioning groove 111. At this time, the support rod 107 rotates 180°. Then, the electric push rod 108 is activated, so that its output shaft extends to move the locking mechanism 2 and the filter plate 103 downward until the filter plate 103 falls to the designated height, so that the staff can clean the filter plate 103 and remove the filter cake.

[0040] This solution, through the coordinated use of components such as support rod 107, electric push rod 108, snap-fit ​​mechanism 2 and annular sleeve 105, can automatically complete the removal and placement of filter plate 103 and the removal of filter cake, greatly reducing the physical labor of operators, making the removal and placement operations more convenient, improving the use effect of this device, and meeting actual use needs.

[0041] It should be noted that all electrical equipment involved in this product is powered by an external power source. The solution also includes an electrical control cabinet, which is installed on the filter press body 101. During use, each piece of electrical equipment can be started and operated through the electrical control cabinet. The power connection method of each piece of electrical equipment is a mature existing technology and is well known to those skilled in the art, so it will not be described in detail here.

[0042] The working principle and usage process of this utility model: When using the filter press produced by the cellulose ether, when the filter plate 103 and the filter cake are removed, the support rod 107 is screwed on. The rotation of the support rod 107 drives the anti-slip rotating sleeve 109 and the positioning rod 110 to rotate synchronously until the positioning rod 110 rotates to one end of the positioning groove 111. The positioning rod 110 and the positioning groove 111 limit the support rod 107, so that the snap-fit ​​mechanism 2 on the electric push rod 108 corresponds to the center of the filter press body 101.

[0043] Next, the cover plate of the filter press body 101 is removed. Then, the electric push rod 108 is activated, causing its output shaft to extend, which in turn drives the locking mechanism 2 to move downwards synchronously until the cylindrical block 201 of the locking mechanism 2 is located at the position of the annular sleeve 105. Then, the two sets of electromagnets 205 are energized. The two sets of electromagnets 205 have opposite magnetic poles, and the electromagnets 205 magnetically attract the iron sheet (not shown in the figure). As the electromagnets 205 approach and attract the iron sheet, they pull the pin rod 203 to move, which in turn moves the expansion rod 202, causing the filter press body to move downwards. The expansion rod 202 is fully pulled into the cylindrical block 201, simultaneously compressing the spring 204. When the expansion rod 202 is fully pulled into the cylindrical block 201, the electric push rod 108 is activated to move the cylindrical block 201 downwards synchronously, causing part of the cylindrical block 201 to pass through the annular sleeve 105. At the same time, both sets of expansion rods 202 are positioned below the annular sleeve 105. When both sets of expansion rods 202 are below the annular sleeve 105, the electromagnet 205 is de-energized, causing the compressed spring 204 to rebound. The two sets of expansion rods 202 are driven to extend outward, causing some of the expansion rods 202 to protrude from the cylindrical block 201. At this time, the diameter of the ends of the two sets of expansion rods 202 that are far apart is larger than the inner diameter of the annular sleeve 105. When the electric push rod 108 is activated to retract, it drives the cylindrical block 201 and the expansion rods 202 to move upward synchronously. Since the diameter of the ends of the two sets of expansion rods 202 that are far apart is larger than the inner diameter of the annular sleeve 105, it drives the annular sleeve 105 to move upward, which in turn drives the filter plate 103 to move upward through the L-shaped bracket 104 until the filter plate is... 103 and the compressed filter cake are taken out from the filter press body 101. Then, the support rod 107 is rotated, which in turn drives the positioning rod 110 to slide in the positioning groove 111 through the anti-slip rotating sleeve 109 and rotate to the other end of the positioning groove 111. At this time, the support rod 107 rotates 180°. Then, the electric push rod 108 is activated, so that its output shaft extends to move the snap-fit ​​mechanism 2 and the filter plate 103 down until the filter plate 103 falls to the designated height, so that the staff can clean the filter plate 103 and remove the filter cake.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A filter press for producing cellulose ethers, comprising a filter press body (101), characterized in that: A ring frame (102) is fixedly installed on the inner side wall of the filter press body (101). The filter press body (101) is equipped with a filter plate (103) placed on a ring frame (102). The filter plate (103) has L-shaped supports (104) arranged symmetrically fixed on its upper surface, and an annular sleeve (105) is fixed between the two sets of L-shaped supports (104). An L-shaped plate (106) is fixedly installed on the outer surface of the filter press body (101). The L-shaped plate (106) is rotatably connected to a support rod (107) via a bearing. An electric push rod (108) is fixedly installed at the top of the support rod (107) via a connecting plate. The output end of the electric push rod (108) is fixedly installed with a snap-fit ​​mechanism (2), which can snap onto the annular sleeve (105) to realize the connection between the electric push rod (108) and the annular sleeve (105).

2. The filter press for producing cellulose ethers according to claim 1, characterized in that: The outer surface of the filter plate (103) is adapted to the inner diameter of the filter press body (101), and the output end of the electric push rod (108) corresponds to the center of the filter press body (101).

3. The filter press for producing cellulose ethers according to claim 1, characterized in that: The snap-fit ​​mechanism (2) includes a cylindrical block (201) fixed to the output end of the electric push rod (108) and a through hole opened on the cylindrical block (201). A fixed plate (206) arranged symmetrically is provided in the through hole. A pin (203) slides on the fixed plate (206). An expansion rod (202) is fixedly installed at the ends of the two sets of pins (203) that are far apart from each other. A spring (204) is wound around the surface of the pin (203). The two ends of the spring (204) are fixedly connected to the expansion rod (202) and the fixed plate (206) respectively. An electromagnet (205) is fixedly installed at the ends of the two sets of pins (203) that are close to each other. An iron sheet is provided between the two sets of electromagnets (205), and the iron sheet is fixedly connected to the cylindrical block (201).

4. The filter press for producing cellulose ethers according to claim 3, characterized in that: The fixed disk (206) and the cylindrical block (201) are fixedly connected. The fixed disk (206) has a movable hole that matches the pin (203). The pin (203) and the fixed disk (206) are slidably connected through this movable hole. The pin (203) has a T-shaped structure design, and the inner diameter of the through hole matches the outer diameter of the expansion rod (202).

5. The filter press for producing cellulose ethers according to claim 1, characterized in that: The surface of the support rod (107) is fixedly fitted with an anti-slip rotating sleeve (109).

6. The filter press for producing cellulose ethers according to claim 5, characterized in that: The lower surface of the anti-slip rotating sleeve (109) is fixed with a positioning rod (110), and the upper surface of the L-shaped plate (106) is provided with an arc groove. One end of the positioning rod (110) is located in the arc groove. When the positioning rod (110) is screwed from one end of the positioning groove (111) to the other end, the support rod (107) is screwed and positioned at 180°.

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