Negative-pressure powder conveying device

Abstract

The utility model provides a powder negative pressure conveying device which comprises a base, a charging barrel is transversely arranged at the right end of the top of the base through a supporting rod, an extending barrel with the left end in a conical barrel shape is detachably arranged at the left end of the charging barrel, and a discharging hopper is arranged at the bottom of the charging barrel. An L-shaped material pumping pipe connected with the right end of the material barrel is further arranged on the base through a supporting frame, and a feeding hopper, a fixing frame, a negative pressure pump, an air guiding pipe, a fixing frame, a plurality of springs, a mounting frame, a filter screen, a guiding module, a driving module, an elastic connecting sleeve and an anti-backflow hopper are arranged at the right end of the discharging hopper. According to the powder negative-pressure conveying device, the basic requirement for negative-pressure conveying of powder can be met, the powder on the filtering structure can be fully vibrated and fall off, and therefore the situation that the conveying efficiency of the powder is affected is avoided; and the failure of the device caused by excessive powder adhered to the filtering structure is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder material conveying, and particularly relates to a powder material negative pressure conveying device. Background Art

[0002] In the process of producing salt, feed additives, food additives and condiments, powder negative pressure conveying devices are used. Although the existing powder negative pressure conveying devices can meet the basic needs of conveying and processing powder, in the process of use, the powder is often intercepted by the filter structure, and the filter structure is vibrated and driven by the vibration structure so that the powder intercepted on the filter structure enters the discharge hopper, thereby conveying the powder. However, since the vibration structure can only perform a fixed knocking process on a single position of the filter structure, it will not be able to fully vibrate the powder on the filter structure to fall off, that is, it is easy to cause the powder on the area of the filter structure far away from the vibration structure to not be quickly and fully shaken off, so it cannot fully meet people's use needs.

[0003] For example, the utility model with the announcement number CN 219078488 U discloses a negative pressure conveying device for powder. In the technical solution of this patent, dust is retained on the inner side of the filter screen, and the transmission motor runs automatically, driving the eccentric disk to rotate, and the eccentric disk drives the transmission rod to rotate. The other end of the transmission rod rotates on one side of the filter screen through a hinge. The filter screen is pushed and pulled by the transmission rod, and the powder on the filter screen is vibrated and falls off. However, since the transmission rod and the hinge can only push and pull the vibration drive at a single fixed position of the filter screen, the filter screen cannot be fully vibrated, and the powder on the filter structure cannot be fully vibrated and falls off, thereby affecting the overall conveying efficiency of the powder. Utility Model Content

[0004] In view of this, the utility model addresses the shortcomings of the existing technology and provides a powder negative pressure conveying device, which not only meets the basic needs of negative pressure conveying of powder, but also can fully vibrate and fall off the powder on the filter structure, thereby avoiding affecting the conveying efficiency of the powder and avoiding device malfunction due to excessive powder adhering to the filter structure.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a powder negative pressure conveying device, including a base, a barrel is horizontally arranged on the right end of the top of the base through a support rod, the left end of the barrel is detachably provided with an extended cylinder with a left end in a conical shape, a discharge hopper is arranged at the bottom of the barrel, an L-shaped extraction pipe connected to the right end of the barrel is also provided on the base through a support frame, a feeding hopper is provided at the right end of the discharge hopper, a fixing frame is provided at the left end of the extended cylinder, a negative pressure pump is provided at the outer end of the fixing frame, and a suction end of the negative pressure pump is provided between the suction end of the negative pressure pump and the left end of the barrel. An air duct is provided, and a circular fixed frame is provided on the inner wall of the left end of the barrel, and multiple springs are horizontally provided on the right side wall of the fixed frame. The right ends of the multiple springs are jointly provided with a circular mounting frame, and a filter is provided in the mounting frame. A guide module is also provided between the fixed frame and the mounting frame. A driving module for pushing the mounting frame is provided inside the extended cylinder, and an elastic connecting sleeve is also provided between the mounting frame and the inner wall of the barrel. An anti-backflow bucket adapted to the filter and the discharge hopper is also provided on the inner wall of the barrel through a connecting rod.

[0006] As a further improvement of the present invention, the guide module includes a plurality of guide inserts arranged transversely on the right side wall of the fixed frame, and a plurality of guide rods fixedly connected to the guide inserts are arranged on the left side wall of the mounting frame.

[0007] As a further improvement of the present invention, the inner wall of the left end of the extension cylinder is clamped and fixed to the outer wall of the right end of the barrel, and a sealing ring that is compatible with the extension cylinder is provided on the outer wall of the right end of the barrel. The extension cylinder is also provided with a connecting bolt for threading the barrel, and a threaded connecting hole that is compatible with the connecting bolt is provided on the barrel.

[0008] As a further improvement of the present invention, the driving module includes multiple telescopic push rods arranged on the extension cylinder and the output shafts extending into the interior of the extension cylinder. The inner ends of the output shafts of the multiple telescopic push rods are commonly provided with push rods for pushing and driving the filter screen.

[0009] As a further improvement of the present invention, an extension ring plate is commonly provided on the push rod, a plurality of support rods are provided at the right end of the extension ring plate, and a support insert cylinder respectively adapted to the plurality of support rods is also provided at the left end of the fixed frame.

[0010] As a further improvement of the present invention, a running wheel is further provided at the bottom of the base, and the running wheel is a universal wheel with a wheel brake.

[0011] As a further improvement of the present invention, a reinforcing rod is provided between the support rod and the base.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] First, the user can start the negative pressure pump, and then add the powder to be negatively pressured into the feed hopper. The negative pressure pump will extract the gas inside the barrel through the air duct, forming a negative pressure inside the barrel. At the same time, the barrel will draw the powder from the feed hopper through the feed pipe, so that the powder is typed into the barrel. The barrel will first be buffered by the anti-backflow bucket, so that the dust will slide down to the lower end of the barrel and fall into the discharge hopper for discharge, thereby negatively conveying the powder. The filter screen filters the dust and gas inside the filter barrel. The gas is discharged through the exhaust pipe and the negative pressure pump, and the dust is retained on the inside of the filter screen. At this time, the output shafts of the multiple telescopic push rods can be synchronously extended and retracted, so that the multiple push rods can intermittently push and adjust the filter screen at the same time, so that the filter screen reciprocates left and right under the cooperation of multiple springs, thereby vibrating the filter screen, thereby vibrating the powder off the filter screen, causing the powder to fall down in the barrel and be discharged through the discharge hopper.

[0014] Secondly, by cooperating with the extension ring plate, the support insert and the support insert rod, it is possible to prevent multiple push rods from moving horizontally smoothly and to prevent the telescopic push rod from being damaged by radial force; through the guide insert and the guide insert rod, the installation frame and the filter screen can be vibrated smoothly horizontally to the left and right to shake off the adhered powder.

[0015] Thirdly, the running wheels enable users to move the device conveniently. Since the running wheels are universal wheels with wheel brakes, the device can be effectively prevented from easily shifting during operation.

[0016] Fourthly, the reinforcing rod can enhance the connection firmness between the support rod and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the barrel, discharge hopper, extraction pipe, fixed frame, spring, mounting frame, filter screen, elastic connecting sleeve, sealing ring, guide insert, and guide insert rod of the utility model;

[0020] Figure 3 This is a structural diagram of the fixed frame, spring, mounting frame, filter screen, elastic connecting sleeve, telescopic push rod, push rod, extension ring plate, support insert, and support insert rod of the present invention;

[0021] Figure 4 This is a structural diagram of the barrel, discharge hopper, backflow prevention hopper and connecting rod of the utility model.

[0022] In the figure: 101, base; 102, barrel; 103, extension barrel; 104, discharge hopper; 105, extraction pipe; 106, feeding hopper; 107, fixing frame; 108, negative pressure pump; 109, air guide duct; 110, fixing frame; 111, spring; 112, mounting frame; 113, filter screen; 114, elastic connecting sleeve; 115, anti-backflow bucket; 116, sealing ring; 117, connecting bolt; 118, walking wheel; 119, reinforcing rod; 120, support rod; 121, supporting frame; 122, connecting rod; 201, guide plug; 202, guide plug; 301, telescopic push rod; 302, push rod; 303, extension ring plate; 304, support plug; 305, support plug. DETAILED DESCRIPTION

[0023] To better understand the present invention, the following examples further illustrate the present invention. However, the present invention is not limited to the following examples. In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be practiced without one or more of these details.

[0024] like Figure 1 、 2 4, a negative pressure conveying device for powder comprises a base 101, a barrel 102 is horizontally arranged at the top right end of the base 101 through a support rod 120, an extension cylinder 103 with a left end being conical can be detachably provided at the left end of the barrel 102, a discharge hopper 104 is provided at the bottom of the barrel 102, an L-shaped extraction pipe 105 connected to the right end of the barrel 102 is further provided on the base 101 through a support frame 121, a feeding hopper 106 is provided at the right end of the discharge hopper 104, a fixing frame 107 is provided at the left end of the extension cylinder 103, a negative pressure pump 108 is provided at the outer end of the fixing frame 107, an air guide duct 109 is provided between the exhaust end of the negative pressure pump 108 and the left end of the barrel 102, and the barrel 10 2 is provided on the inner wall of the left end of a circular fixed frame 110, a plurality of springs 111 are laterally provided on the right side wall of the fixed frame 110, and a circular mounting frame 112 is provided at the right ends of the plurality of springs 111. A filter screen 113 is provided in the mounting frame 112, and a guide module is provided between the fixed frame 110 and the mounting frame 112. A driving module for pushing and driving the mounting frame 112 is provided inside the extension cylinder 103, and an elastic connecting sleeve 114 is provided between the mounting frame 112 and the inner side wall of the barrel 102. An anti-backflow bucket 115 adapted to the filter screen 113 and the discharge hopper 104 is also provided on the inner side wall of the barrel 102 through a connecting rod 122.

[0025] like Figure 2 、 3 As shown, the guide module includes multiple guide inserts 201 disposed transversely on the right side wall of the fixed frame 110, and multiple guide rods 202 disposed on the left side wall of the mounting frame 112, which are plugged and fixed to the guide inserts 201. The guide inserts 201 and guide rods 202 enable the mounting frame 112 and the filter screen 113 to vibrate smoothly from side to side, shaking off any adhering powder.

[0026] like Figure 1 、 2 As shown, the inner wall of the left end of the extension cylinder 103 is clamped and fixed with the outer wall of the right end of the barrel 102, and a sealing ring 116 that is compatible with the extension cylinder 103 is provided on the outer wall of the right end of the barrel 102. The extension cylinder 103 is also provided with a connecting bolt 117 for screwing the barrel 102, and the barrel 102 is provided with a threaded connection hole that is compatible with the connecting bolt 117.

[0027] like Figure 1 、 3 As shown, the driving module includes a plurality of telescopic push rods 301 arranged on the extension cylinder 103 and with output shafts extending into the extension cylinder 103 , and the inner ends of the output shafts of the plurality of telescopic push rods 301 are commonly provided with a push rod 302 for pushing and driving the filter 113 .

[0028] The user can start the negative pressure pump 108, and then add the powder to be negatively pressure conveyed into the feed hopper. The negative pressure pump 108 will extract the gas inside the barrel 102 through the air duct 109, forming a negative pressure inside the barrel 102. At the same time, the barrel 102 will extract the powder from the feed hopper through the feed pipe, so that the powder is typed into the barrel 102. The barrel 102 will first be buffered by the anti-backflow bucket 115, so that the dust will slide down to the lower end of the barrel 102 and fall into the discharge hopper 104 for discharge, thereby performing negative pressure conveying on the powder. The filter screen 11 3. The dust and gas inside the filter cartridge are filtered, and the gas is discharged through the exhaust pipe and the negative pressure pump 108. The dust is retained on the inner side of the filter screen 113. At this time, the output shafts of the multiple telescopic push rods 301 can be synchronously telescoped, so that the multiple push rods 302 can intermittently push and adjust the filter screen 113 at the same time, so that the filter screen 113 can reciprocate left and right with the cooperation of the multiple springs 111, thereby vibrating the filter screen 113, thereby vibrating and falling off the powder on the filter screen 113, causing the powder to fall downward in the barrel 102 and be discharged through the discharge hopper 104.

[0029] According to another embodiment of the present invention, Figure 3As shown, the push rods 302 are provided with an extension ring plate 303, and a plurality of support rods 305 are provided at the right end of the extension ring plate 303. The left end of the fixed frame 110 is also provided with support inserts 304 that respectively adapt to the plurality of support inserts 305. The cooperation between the extension ring plate 303, the support inserts 304, and the support inserts 305 can prevent the plurality of push rods 302 from moving horizontally smoothly and prevent the telescopic push rod 301 from being damaged by radial forces.

[0030] According to another embodiment of the present invention, Figure 1 As shown, the bottom of the base 101 is also provided with a running wheel 118, which is a universal wheel with a wheel brake. The running wheel 118 can make it convenient for the user to move the device, and because the running wheel 118 is a universal wheel with a wheel brake, it can effectively prevent the device from easily deviating during operation.

[0031] According to another embodiment of the present invention, Figure 1 As shown, a reinforcing rod 119 is provided between the support rod 120 and the base 101. The reinforcing rod 119 can enhance the connection firmness between the support rod 120 and the base 101.

[0032] 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 of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A powder negative pressure conveying device, comprising a base (101), characterized in that: The top right end of the base (101) is laterally provided with a barrel (102) through a support rod (120), the left end of the barrel (102) is detachably provided with an extension cylinder (103) with a conical left end, and the bottom of the barrel (102) is provided with a discharge hopper (104). The base (101) is also provided with an L-shaped extraction pipe (105) connected to the right end of the barrel (102) through a support frame (121), and a feeding hopper (106) is provided at the right end of the discharge hopper (104). A fixing frame (107) is provided at the left end of the extension cylinder (103), and a negative pressure pump (108) is provided at the outer end of the fixing frame (107). An air guide pipe (109) is provided between the exhaust end of the negative pressure pump (108) and the left end of the barrel (102). A circular fixed frame (110) is provided, a plurality of springs (111) are transversely arranged on the right side wall of the fixed frame (110), a circular mounting frame (112) is provided at the right ends of the plurality of springs (111), a filter screen (113) is provided in the mounting frame (112), a guide module is provided between the fixed frame (110) and the mounting frame (112), a driving module for driving the mounting frame (112) is provided inside the extension cylinder (103), an elastic connecting sleeve (114) is provided between the mounting frame (112) and the inner side wall of the barrel (102), and an anti-backflow bucket (115) adapted to the filter screen (113) and the discharge hopper (104) is provided on the inner side wall of the barrel (102) through a connecting rod (122).

2. The negative pressure powder conveying device according to claim 1, characterized in that: The guide module comprises a plurality of guide inserts (201) arranged transversely on the right side wall of the fixed frame (110), and a plurality of guide rods (202) plugged and fixed with the guide inserts (201) are arranged on the left side wall of the mounting frame (112).

3. The negative pressure powder conveying device according to claim 2, characterized in that: The inner side wall of the left end of the extension cylinder (103) is fixedly engaged with the outer side wall of the right end of the barrel (102); a sealing ring (116) adapted to the extension cylinder (103) is provided on the outer side wall of the right end of the barrel (102); a connecting bolt (117) for screwing and fixing the barrel (102) is also provided on the extension cylinder (103); a threaded connection hole adapted to the connecting bolt (117) is provided on the barrel (102).

4. The negative pressure powder conveying device according to claim 3, characterized in that: The driving module comprises a plurality of telescopic push rods (301) arranged on the extension cylinder (103) and having output shafts extending into the interior of the extension cylinder (103); the inner ends of the output shafts of the plurality of telescopic push rods (301) are commonly provided with a push rod (302) for pushing and driving the filter screen (113).

5. The negative pressure powder conveying device according to claim 4, characterized in that: The push rod (302) is provided with an extension ring plate (303), the right end of the extension ring plate (303) is provided with a plurality of support rods (305), and the left end of the fixed frame (110) is also provided with support inserts (304) respectively adapted to the plurality of support rods (305).

6. The negative pressure powder conveying device according to claim 5, characterized in that: The bottom of the base (101) is also provided with a running wheel (118), and the running wheel (118) is a universal wheel with a wheel brake.

7. The negative pressure powder conveying device according to claim 6, characterized in that: A reinforcing rod (119) is provided between the support rod (120) and the base (101).

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