Screen plate type screen exchanger

Abstract

The utility model provides a screen plate type screen exchanger, which belongs to the technical field of screen exchangers and comprises a screen exchange plate arranged in a screen exchanger main body, a hydraulic base arranged at the tail end of the screen exchanger main body, a hydraulic cylinder arranged at the tail end of the hydraulic base and a front heat preservation bin arranged at the front end of a shell of the screen exchanger main body. A first transfer window is arranged on the front face of the front heat preservation bin, a rear heat preservation bin is arranged at the rear end of a shell of the screen exchanger body, a second transfer window is arranged on the front face of the rear heat preservation bin, a ventilation assembly is arranged between the front heat preservation bin and the top of the rear heat preservation bin, and a heat supply fan is arranged on the face, away from the screen exchanger body, of the front heat preservation bin. Hot air is supplied to the front heat preservation bin and the rear heat preservation bin through the heat supply fan, so that the temperature of standby screens stored in the front heat preservation bin and the rear heat preservation bin is close to that of old screens, and the situation that the filtering effect is reduced due to the fact that the temperature of the standby screens is low is avoided; therefore, the filtering quality is stabilized.

Description

Technical Field

[0001] The utility model relates to the technical field of screen changers, in particular to a screen plate type screen changer. Background Art

[0002] The screen changer uses a screen to filter impurities in the melt. When working, when the pressure on one side of the screen reaches a certain value or after a period of time, the screen changer will automatically switch to another clean screen, thereby ensuring the continuity of the production process and avoiding the adverse effects of impurities on product quality. It is widely used in the production of plastic films, pipes, plates, wire drawing and other plastic products, as well as in the extrusion processing of rubber products.

[0003] In the related art, most screen plate type screen changers are driven by hydraulic pressure, and the screen changer is moved by the hydraulic rod on the hydraulic cylinder, thereby replacing the spare clean screen plate on the screen changer with the filter port.

[0004] However, most of the spare clean screens are currently placed overhead and exposed outside the screen changer. There is a large temperature difference between the clean screen and the dirty screen that needs to be replaced. When the temperature of the clean screen is low, the fluidity of the plastic melt will deteriorate. When the melt flows through the screen with a lower temperature, the flow rate may be uneven, thereby affecting the filtration effect. In order to solve the above problems, a screen plate type screen changer is proposed to solve the above problems. Utility Model Content

[0005] In view of this, the present invention provides a mesh type screen changer, which supplies hot air to the front insulation bin and the rear insulation bin through a heating fan, so that the temperature of the spare mesh plates stored in the front insulation bin and the rear insulation bin is close to the temperature of the old mesh plates, avoiding the situation where the filtering effect is reduced due to the low temperature of the spare mesh plates, thereby stabilizing the filtering quality.

[0006] In order to solve the above technical problems, the utility model provides a mesh-plate type screen changer, comprising a screen changer arranged in a screen changer body, a hydraulic base arranged at the end of the screen changer body, the hydraulic base is used to support and install a hydraulic cylinder, the hydraulic cylinder is arranged at the end of the hydraulic base, the front end of the shell of the screen changer body is provided with a first connecting plate for connecting the front heat preservation bin with the front end of the screen changer body, the side of the first connecting plate away from the screen changer body is provided with a front heat preservation bin, the front heat preservation bin is used to maintain the temperature when the spare screen plate is in the front of the screen changer body, the front of the front heat preservation bin is provided with a first transfer window for replacing the old screen plate, the screen changer body A second connecting plate is provided at the rear end of the outer shell of the body, and the second connecting plate is used to connect the rear end of the screen changer body with the rear insulation bin. A rear insulation bin is provided on the side of the second connecting plate away from the screen changer body, and the rear insulation bin is used to maintain the temperature when the spare screen plate is at the rear of the screen changer body. A second transfer window is provided on the front of the rear insulation bin, and the second transfer window is used to replace the old screen plate. A ventilation component for circulating hot air is provided between the front insulation bin and the top of the rear insulation bin, and a heating fan for supplying hot air to the ventilation component is provided on the side of the front insulation bin away from the screen changer body, and the air inlet end of the ventilation component is connected with the air outlet end of the heating fan.

[0007] A connecting piece for connecting the hydraulic rod on the hydraulic cylinder and the screen changing plate is provided at the end of the screen changing plate. A hydraulic base for supporting and fixing the hydraulic cylinder is horizontally provided in the rear insulation warehouse. The hydraulic rod on the hydraulic cylinder passes through the support plate of the hydraulic base and is connected to the connecting piece.

[0008] A sealing plate is provided on the side of the rear insulation bin close to the hydraulic cylinder. The sealing plate is used to seal and insulate the joint between the rear insulation bin and the hydraulic base. A groove is provided in the middle of the sealing plate to facilitate the subsequent disassembly of the sealing plate. The size of the groove is smaller than the size of the support plate on the hydraulic base.

[0009] The first transfer window includes a front transfer channel connected to the front of the front insulation bin, the front transfer channel is used to replace the old mesh plate at the front end when the mesh plate moves forward, and a transfer door is set on the front of the front transfer channel, the transfer door is used to open and close the front transfer channel.

[0010] There are notches in the middle of the first connecting plate and the second connecting plate. The first connecting plate is connected to the front end of the screen changer body through the notch, and the second connecting plate is connected to the rear end of the screen changer body through the notch. The size of the notch is consistent with the inlet and outlet size of the screen changer plate.

[0011] The second transfer window includes a rear transfer channel connected to the front of the rear insulation warehouse. The rear transfer channel is used to replace the screen plate and move it backward to move the old screen plate at the rear end. A transfer door for opening and closing the rear transmission channel is provided on the front of the rear transfer channel.

[0012] The ventilation assembly includes a ventilation main pipe connected to the top of the heating fan. The ventilation main pipe is used to connect the ventilation branch pipe with the heating fan. Several ventilation branch pipes are arranged at the bottom of the ventilation main pipe. The top of the rear insulation bin is connected to the ventilation branch pipe, and the top of the front insulation bin is connected to the ventilation branch pipe.

[0013] A control panel for adjusting the hot air temperature is provided on the front of the heating fan casing. A support base for supporting and fixing the heating fan is provided at the bottom of the heating fan. A quick-release joint is provided at the air outlet end of the heating fan. The quick-release joint facilitates manual separation of the connection between the heating fan and the ventilation main pipe. The quick-release joint is connected to the air inlet end of the ventilation main pipe.

[0014] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0015] 1. The heating fan supplies hot air to the front and rear insulation bins, so that the temperature of the spare mesh plates stored in the front and rear insulation bins is close to that of the old mesh plates, avoiding the situation where the filtration effect is reduced due to the low temperature of the spare mesh plates, thereby stabilizing the filtration quality.

[0016] 2. A sealing plate is provided to allow the rear heat preservation chamber to wrap around the hydraulic base, thereby preventing heat from being lost through the gap between the rear heat preservation chamber and the hydraulic base.

[0017] 3. The ventilation assembly is used to keep the temperature in the rear insulation compartment consistent with that in the front insulation compartment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the left side assembly of the main body of the utility model;

[0020] Figure 3 This is a schematic diagram of the right side assembly of the main body of the utility model;

[0021] Figure 4 It is a front sectional view of the present utility model.

[0022] Explanation of the accompanying drawings: 100, screen changer body; 101, screen changer plate; 102, hydraulic base; 103, hydraulic cylinder; 104, connecting part; 200, first connecting plate; 201, front insulation chamber; 202, first transfer window; 203, front transfer channel; 204, transfer door; 205, notch; 300, second connecting plate; 301, rear insulation chamber; 302, second transfer window; 303, sealing plate; 304, groove; 305, rear transfer channel; 400, ventilation assembly; 401, heating fan; 402, ventilation main pipe; 403, ventilation branch pipe; 404, control panel; 405, support base; 406, quick-release connector. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer, the following will be combined with the appended drawings of the embodiment of the present invention. Figure 1-4 The technical solutions of the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0024] like Figure 1-4 As shown: This embodiment provides a mesh-type screen changer, including a screen changer 101 arranged in a screen changer body 100, a hydraulic base 102 arranged at the end of the screen changer body 100, the hydraulic base 102 is used to support and install a hydraulic cylinder 103, the hydraulic cylinder 103 is arranged at the end of the hydraulic base 102, the front end of the shell of the screen changer body 100 is provided with a first connecting plate 200 for connecting the front end of the screen changer body 100 with the front end of the screen changer body 100, the side of the first connecting plate 200 away from the screen changer body 100 is provided with a front insulation bin 201, the front insulation bin 201 is used to maintain the temperature of the spare screen when it is in the front of the screen changer body 100, the front of the front insulation bin 201 is provided with a first transfer window 202 for replacing the old screen, the rear end of the shell of the screen changer body 100 A second connecting plate 300 is provided at the end, and the second connecting plate 300 is used to connect the rear end of the screen changer body 100 with the rear insulation bin 301. A rear insulation bin 301 is provided on the side of the second connecting plate 300 away from the screen changer body 100, and the rear insulation bin 301 is used to maintain the temperature when the spare screen is at the rear of the screen changer body 100. A second transfer window 302 is provided on the front of the rear insulation bin 301, and the second transfer window 302 is used to replace the old screen. A ventilation component 400 for circulating hot air is provided between the front insulation bin 201 and the top of the rear insulation bin 301, and a heating fan 401 for supplying hot air to the ventilation component 400 is provided on the side of the front insulation bin 201 away from the screen changer body 100, and the air inlet end of the ventilation component 400 is connected with the air outlet end of the heating fan 401.

[0025] When in use, the heating fan 401 is started to make the hot air pass through the ventilation branch pipe 403 on the ventilation component 400, and enter the front insulation bin 201 and the rear insulation bin 301 respectively to keep their temperatures consistent, thereby keeping the spare screen in the front insulation bin 201 at the same temperature, and the hydraulic rod on the hydraulic cylinder 103 drives the screen-changing plate 101 to move backward, thereby making the old screen on the original filter port retreat to the rear insulation bin 301, and open the transfer door 204 on the second transfer window 302, and pass the screen in the rear insulation bin 301 to the front insulation bin 201. The transfer channel 305 uses tools to remove the old mesh plate and then replace it with a new one. At this time, the spare mesh plate in the front insulation chamber 201 is replaced on the filter port without stopping the machine. Similarly, the new mesh plate can also be replaced in the first transfer window 202. Therefore, no matter whether the spare mesh plate is replaced in the front insulation chamber 201 or in the rear insulation chamber 301, the spare mesh plate can maintain the temperature, avoiding the change of the mesh temperature difference due to the spare mesh plate being exposed to the outside of the mesh changer, thereby affecting the filtering effect.

[0026] This embodiment provides a screen plate type screen changer,

[0027] like Figure 1 、 2 4: A connector 104 is provided at the end of the screen changing plate 101 for connecting the hydraulic rod on the hydraulic cylinder 103 to the screen changing plate 101. The connector 104 is fixed to the end of the screen changing plate 101 with bolts. The connector 104 is circular with a threaded inner ring. A hydraulic base 102 for supporting and fixing the hydraulic cylinder 103 is horizontally provided in the rear insulation warehouse 301. The hydraulic base 102 includes 4 pillars and a support plate. The hydraulic rod on the hydraulic cylinder 103 passes through the support plate of the hydraulic base 102 and is threadedly connected to the connector 104.

[0028] The effect is that the connecting piece 104 is used to connect the screen changing plate 101 with the hydraulic cylinder 103, so that the hydraulic rod on the hydraulic rod can drive the screen changing plate 101 to move, thereby achieving the purpose of replacing the screen plate 101 without stopping the machine.

[0029] like Figure 1 、 3 4: A sealing plate 303 is provided on one side of the rear insulation bin 301 close to the hydraulic cylinder 103. The sealing plate 303 is welded and fixed to the rear insulation bin 301. The sealing plate 303 is used for sealing and heat preservation at the joint between the rear insulation bin 301 and the hydraulic base 102. A groove 304 is provided in the middle of the sealing plate 303. The joint between the groove 304 and the sealing plate 303 can be coated with sealant to strengthen the sealing effect. The groove 304 facilitates the subsequent disassembly of the sealing plate 303. The size of the groove 304 is smaller than that of the support plate on the hydraulic base 102.

[0030] The effect is that the sealing plate 303 is provided to enable the rear heat preservation chamber 301 to wrap the hydraulic base 102 , thereby preventing heat from being lost through the gap between the rear heat preservation chamber 301 and the hydraulic base 102 .

[0031] like Figure 1 、 2 3: The first transfer window 202 includes a front transfer channel 203 connected to the front insulation bin 201, the front transfer channel 203 is welded and fixed to the first transfer window 202, the front transfer channel 203 is used to replace the old mesh plate at the front end when the mesh changing plate 101 moves forward, a transfer door 204 is set on the front of the front transfer channel 203, the transfer door 204 is connected and fixed to the front transmission channel with a hinge, and the transfer door 204 is used to open and close the front transfer channel 203.

[0032] The effect is: when the screen changing plate 101 moves forward, the old screen at the front end of the screen changing plate 101 moves to the first transfer window 202 for replacement. After the old screen is replaced by the first transfer window 202, the temperature of the new screen changing plate 101 can be maintained, avoiding the new screen being exposed outside the screen changer body.

[0033] like Figure 1 、 2 3: A notch 205 is provided in the middle of the first connecting plate 200 and the second connecting plate 300. The first connecting plate 200 is connected to the front end of the screen changer body 100 through the notch 205, and the second connecting plate 300 is connected to the rear end of the screen changer body 100 through the notch 205. The size of the notch 205 is consistent with the inlet and outlet size of the screen changer plate 101. The rear end of the first connecting plate 200 and the front end of the screen changer body 100 are connected and fixed with bolts, and the front end of the second connecting plate 300 and the rear end of the screen changer body 100 are connected and fixed with bolts. The support on the hydraulic base 102 is connected and fixed to the rear end face of the second connecting plate 300 with bolts.

[0034] The effect is that the first connecting plate 200 is equipped with the notch 205 for connecting the front heat preservation chamber 201 with the front end of the screen changer body 100, and the second connecting plate 300 is equipped with the notch 205 for connecting the rear heat preservation chamber 301 with the rear end of the screen changer body 100.

[0035] like Figure 1 、 2 3: The second transfer window 302 includes a rear transfer channel 305 connected to the front of the rear insulation bin 301, the second transfer window 302 is welded to the rear transfer channel 305, the rear transfer channel 305 is used to replace the screen plate 101 and move the old screen plate at the rear end, the front of the rear transfer channel 305 is provided with a transfer door 204 for opening and closing the rear transmission channel, and the rear transfer channel 305 is connected to the transfer door 204 using hinges.

[0036] The effect is: when the screen changing plate 101 moves backward, the old screen at the rear end of the screen changing plate 101 moves to the second transfer window 302 for replacement. After the old screen is replaced by the second transfer window 302, the temperature of the new screen changing plate 101 can be maintained, avoiding the new screen being exposed outside the screen changer body.

[0037] like Figure 1 、 2 As shown: the ventilation assembly 400 includes a ventilation main pipe 402 connected to the top of the heating fan 401, the ventilation main pipe 402 is used to connect the ventilation branch pipe 403 with the heating fan 401, and a plurality of ventilation branch pipes 403 are arranged at the bottom of the ventilation main pipe 402. The ventilation main pipe 402 and the ventilation branch pipe 403 can be welded and connected. The top of the rear insulation warehouse 301 is connected to the ventilation branch pipe 403, and the top of the front insulation warehouse 201 is connected to the ventilation branch pipe 403. An exhaust valve can also be added to the top of the ventilation main pipe 402.

[0038] The effect is that the ventilation component 400 is used to keep the temperature in the rear heat preservation chamber 301 consistent with that in the front heat preservation chamber 201.

[0039] like Figure 1 、 2 As shown in 3: A control panel 404 for adjusting the hot air temperature is provided on the front of the casing of the heating fan 401, the casing of the heating fan 401 and the control panel 404 are fixed with bolts, the heating fan 401 and the control panel 404 are electrically connected, a support base 405 for supporting and fixing the heating fan 401 is provided at the bottom of the heating fan 401, the heating fan 401 and the support base 405 are fixed with bolts, a quick-release joint 406 is provided at the air outlet end of the heating fan 401, the quick-release joint 406 can be a bolt-type flexible joint, the quick-release joint 406 can be replaced with a flange joint, the quick-release joint 406 facilitates manual separation of the connection between the heating fan 401 and the ventilation main pipe 402, and the quick-release joint 406 is sealed with the air inlet end of the ventilation main pipe 402.

[0040] The effect is: the heating fan 401 is used to supply hot air to the ventilation component 400, and then heat the front insulation bin 201 and the rear insulation bin 301, so that the replaced spare mesh plate can maintain a certain temperature, avoiding the impact of the filtration quality due to the spare mesh plate being too cold.

[0041] Working principle: The hot air is passed through the ventilation branch pipe 403 on the ventilation component 400 by the heating fan 401, and enters the front insulation chamber 201 and the rear insulation chamber 301 respectively, so that the temperature of the front insulation chamber 201 and the rear insulation chamber 301 are consistent. Under normal conditions, the old mesh plate works on the filter port, and the spare mesh plate is in the front insulation chamber 201. The hot air supply can keep the spare mesh plate at a temperature similar to that of the old mesh plate. When it is necessary to replace it without stopping the machine, the hydraulic cylinder 103 drives the mesh replacement plate 101 to move, so that the old mesh plate retreats to the rear insulation chamber 301, and the spare mesh plate can be replaced with heat on the filter port for filtering, avoiding the situation where the filtering effect is affected by the low temperature of the spare mesh plate. Then repeat this operation, and the rear insulation chamber 301 and the front insulation chamber 201 can both replace and keep the spare mesh plate warm, thereby stabilizing the filtering effect.

[0042] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A screen-type screen changer, comprising a screen-changing plate (101) disposed in a screen-changing body (100), a hydraulic base (102) disposed at the end of the screen-changing body (100), and a hydraulic cylinder (103) disposed at the end of the hydraulic base (102), characterized in that: The front end of the shell of the screen changer main body (100) is provided with a first connecting plate (200), a side of the first connecting plate (200) away from the screen changer main body (100) is provided with a front heat preservation chamber (201), a front side of the front heat preservation chamber (201) is provided with a first transfer window (202), and the rear end of the shell of the screen changer main body (100) is provided with a second connecting plate (300), the second connecting plate (300) is away from the screen changer main body (100) A rear heat preservation chamber (301) is provided on one side, a second transfer window (302) is provided on the front of the rear heat preservation chamber (301), a ventilation component (400) is provided between the front heat preservation chamber (201) and the top of the rear heat preservation chamber (301), a heating fan (401) is provided on the side of the front heat preservation chamber (201) away from the screen changer body (100), and the air inlet end of the ventilation component (400) is connected to the air outlet end of the heating fan (401).

2. A screen-type screen changer according to claim 1, characterized in that: A connecting piece (104) is provided at the end of the screen changing plate (101), the hydraulic base (102) is horizontally provided in the rear heat preservation chamber (301), and the hydraulic rod on the hydraulic cylinder (103) passes through the support plate of the hydraulic base (102) and is connected to the connecting piece (104).

3. A screen-type screen changer according to claim 2, characterized in that: A sealing plate (303) is provided on one side of the rear heat preservation chamber (301) close to the hydraulic cylinder (103), a groove (304) is provided in the middle of the sealing plate (303), and the size of the groove (304) is smaller than the size of the support plate on the hydraulic base (102).

4. A screen-type screen changer according to claim 3, characterized in that: The first transfer window (202) comprises a front transfer passage (203) connected to the front of the front heat preservation chamber (201), and a transfer door (204) is provided on the front of the front transfer passage (203).

5. The screen-type screen changer according to claim 4, characterized in that: The first connecting plate (200) and the second connecting plate (300) are both provided with a notch (205) in the middle, and the size of the notch (205) is consistent with the inlet and outlet size of the screen changing plate (101).

6. The screen-type screen changer according to claim 5, characterized in that: The second transfer window (302) includes a rear transfer passage (305) connected to the front of the rear heat preservation chamber (301), and the front of the rear transfer passage (305) is provided with the transfer door (204).

7. The screen-type screen changer according to claim 6, characterized in that: The ventilation assembly (400) includes a ventilation main pipe (402) connected to the top of the heating blower (401), and a plurality of ventilation branches (403) arranged at the bottom of the ventilation main pipe (402). The top of the rear heat preservation bin (301) is connected to the ventilation branches (403), and the top of the front heat preservation bin (201) is connected to the ventilation branches (403).

8. The screen-type screen changer according to claim 7, characterized in that: A control panel (404) is provided on the front of the housing of the heating fan (401), a support base (405) is provided at the bottom of the heating fan (401), and a quick-release joint (406) is provided at the air outlet end of the heating fan (401), and the quick-release joint (406) is connected to the air inlet end of the ventilation main pipe (402).

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