A new type of feed pump

Abstract

The present invention provides a new type of material pump, which relates to the technical field of material feeding equipment. It includes: a pump body assembly, a piston assembly and a drive assembly; the pump body assembly includes an internal chamber for accommodating rubber material and a feed port and a discharge port connected to the internal chamber; the internal chamber is indented with an extrusion chamber near the discharge port, and the extrusion chamber is located between the feed port and the discharge port; the piston assembly is arranged in the internal chamber, and the piston assembly can reciprocate along the opening direction of the internal chamber, and is tightly matched with the extrusion chamber so that the piston assembly can move along the opening direction of the extrusion chamber, so as to press and convey the rubber material input from the feed port to the extrusion chamber to the discharge port; the drive assembly is used to drive the piston assembly to move in the internal chamber. It has a simple structure and is easy to operate, and is suitable for the injection or coating of high-viscosity rubber materials and metering, avoiding the limitations of existing screw pumps.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying equipment, and in particular to a novel material pump. Background Art

[0002] At present, feeding equipment is widely used in various production and manufacturing fields. For the metering and conveying of high-viscosity rubber materials such as glue filling / coating with a viscosity range of 300,000 to 1,000,000 CP, the current market basically adopts the screw pump feeding method. However, the use of screw pump feeding has the following disadvantages:

[0003] 1) The screw and pump body of the screw pump have high processing and matching precision, which will affect the service life under high-precision conveying. It is necessary to replace dynamic seals and other accessories regularly, and the repair and maintenance cost is relatively high; 2) The flow rate of the screw pump will be limited by the pressure. Under large flow conditions, it is difficult to increase the pressure; 3) The screw pump is sensitive to changes in the viscosity of the liquid. When high-precision conveying of rubber is required, it is difficult to meet the use of different rubbers with a large viscosity range; 4) The precise conveying of materials by the screw pump requires the control of a flow meter. Therefore, the feeding system must have a flow meter (applicable to high-viscosity rubbers), and the system production and maintenance costs are high.

[0004] With the application and demand of rubber production, the requirements for feeding methods are getting higher and higher. While meeting the production requirements, the requirements for low cost, simple and compact structure, long service life, and simple maintenance are gradually increasing. The traditional screw pump feeding method can no longer meet these actual needs of customers. Summary of the invention

[0005] The invention discloses a novel material pump, aiming to improve the problems of many limitations of the existing pump body in feeding and beating rubber materials.

[0006] The present invention adopts the following scheme:

[0007] The present application provides a novel material pump, comprising: a pump body assembly, a piston assembly and a drive assembly; the pump body assembly comprises an internal chamber for accommodating rubber material and a feed port and a discharge port communicated with the internal chamber; an extrusion chamber is indented in the internal chamber near the discharge port, and the extrusion chamber is located between the feed port and the discharge port; the piston assembly is arranged in the internal chamber, the piston assembly can reciprocate along the opening direction of the internal chamber, and is tightly matched with the extrusion chamber so that the piston assembly can move along the opening direction of the extrusion chamber, so as to press and transport the rubber material input into the extrusion chamber from the feed port to the discharge port; the drive assembly is used to drive the piston assembly to move in the internal chamber.

[0008] As a further improvement, the piston assembly includes a rod body connected to the drive assembly and a piston head arranged at the end of the rod body; the piston head is adapted to the extrusion chamber, and when the piston head moves into the extrusion chamber, the internal chamber is separated by the piston head.

[0009] As a further improvement, the piston assembly is a cylindrical structure, the feed port is arranged at the bottom position of the cylindrical structure, and the discharge port is arranged at a side position close to the top of the cylindrical structure; the drive assembly and the piston assembly are arranged at the top of the piston assembly in sequence from top to bottom, so that the rod body of the piston assembly extends vertically into the internal chamber.

[0010] As a further improvement, a sealing seat for sealing the piston assembly is arranged on the top, and the extrusion chamber is opposite to the sealing seat. The piston head is moved into the extrusion chamber so that the chamber above the piston head is closed to form a feeding space with only the discharge port. The rod body of the piston assembly is passed through the sealing seat, and the rod body can slide up and down relative to the sealing seat.

[0011] As a further improvement, a discharge seat is embedded between the sealing seat and the piston assembly, the discharge seat is communicated with the internal chamber, and the discharge port is arranged on one side of the discharge seat.

[0012] As a further improvement, a limit sleeve is provided on the rod body, and the limit sleeve is adjustably configured on the rod body located in the internal chamber. The limit sleeve abuts against the lower end surface of the sealing seat to limit the continued upward movement of the rod body, correspondingly controlling the rising threshold of the piston head, thereby adjusting the output amount of the rubber from the extrusion chamber to the discharge port.

[0013] As a further improvement, the piston head is made of elastic material and is a flat body with small upper and lower ends and a large middle part. The cavity of the extrusion cavity is a cylindrical body that matches the middle part of the flat body, and the inner diameter of the extrusion cavity is smaller than the maximum outer diameter of the piston head.

[0014] As a further improvement, the piston head moves toward the feed port until it is away from the end of the extrusion chamber, and the rubber is input into the internal chamber through the feed port, and at least part of the rubber can enter the extrusion chamber through the gap formed between the piston head and the extrusion chamber when the piston head is away from the extrusion chamber.

[0015] As a further improvement, the extrusion chamber can move along the layout direction of the internal chamber and is always located in the internal chamber under the reciprocating drive of the piston assembly. The piston assembly moves back and forth along the layout direction of the internal chamber, correspondingly allowing the extrusion chamber to be located close to the feed port to accommodate the rubber material, and move to a position close to the discharge port to correspondingly cooperate in conveying the rubber material to the discharge port.

[0016] As a further improvement, the driving assembly has a push rod mechanism, which is connected to the piston assembly, so that the output shaft of the push rod mechanism is extended and retracted to push the piston assembly to move back and forth along the opening direction of the internal chamber.

[0017] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0018] The pump of the present application has a simple structure and is easy to operate. It is suitable for the filling or coating of high-viscosity (ranging from 300,000 to 1,000,000 cp) rubber materials and for metering. It avoids the limitations of the existing screw pumps such as short service life, pressure-limited flow, and high manufacturing and maintenance costs. Among them, the piston assembly moves back and forth in the extrusion chamber to press and convey the rubber in the internal chamber to the discharge port through the relatively retracted extrusion chamber, realizing piston-type feeding and punching conveying, thereby increasing the conveying flow and conveying pressure. Correspondingly, the rubber conveying distance is long and the conveying accuracy is high. It is suitable for suction conveying liquids of various media and viscosities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic structural diagram of a feed pump according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A local enlarged schematic diagram of point I in the middle;

[0022] Figure 3 yes Figure 1 A partial enlarged schematic diagram of position II in the middle;

[0023] Figure 4 is a cross-sectional view of a material pump according to an embodiment of the present invention;

[0024] Figure 5is a schematic structural diagram of a feed pump according to an embodiment of the present invention from another perspective;

[0025] Figure 6 It is a partial cross-sectional view of a feed pump according to another embodiment of the present invention.

[0026] icon:

[0027] 1- pump body assembly; 11- internal chamber; 12- extrusion chamber; 13- feed inlet; 14- discharge outlet;

[0028] 2-piston assembly; 21-rod body; 211-limit sleeve; 22-piston head; 23-first end; 24-second end;

[0029] 3-driving assembly; 31-push rod mechanism;

[0030] 4-sealing seat; 5-discharging seat; 6-bushing. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] Example

[0037] Combination Figures 1 to 5 This embodiment provides a new type of material pump, including: a pump body assembly 1, a piston assembly 2 and a drive assembly 3. The new type of material pump is suitable for the filling or coating of high viscosity (ranging from 300000cp to 1000000cp) rubber materials, and avoids the limitations of the existing screw pumps such as short service life, pressure limiting flow, high manufacturing and maintenance costs, etc.

[0038] In this embodiment, the pump body assembly 1 includes an internal chamber 11 for accommodating rubber material, and an inlet 13 and an outlet 14 communicated with the internal chamber 11. An extrusion chamber 12 is indented in the internal chamber 11 near the outlet 14, and the extrusion chamber 12 is located between the inlet 13 and the outlet 14. The piston assembly 2 is disposed in the internal chamber 11, and the piston assembly 2 can reciprocate along the opening direction of the internal chamber 11, and is tightly matched with the extrusion chamber 12 so that the piston assembly 2 can move along the opening direction of the extrusion chamber 12, so as to press and transport the rubber material input from the inlet 13 to the extrusion chamber 12 to the outlet 14. The drive assembly 3 is used to drive the piston assembly 2 to move in the internal chamber 11.

[0039] In this embodiment, the piston assembly 2 moves back and forth in the extrusion chamber 12 to press and convey the rubber material in the internal chamber 11 to the discharge port 14 through the relatively retracted extrusion chamber 12, thereby realizing piston-type feeding and punching conveying, thereby increasing the conveying flow rate and conveying pressure. Correspondingly, the rubber material is conveyed over a long distance with high conveying accuracy, and is suitable for suction conveying of liquids of various media and viscosities.

[0040] In this embodiment, the extrusion chamber 12 may be a part of the internal chamber 11 and is located between the feed port 13 and the discharge port 14. When the piston assembly 2 reciprocates along the opening direction of the internal chamber 11, the rubber material input from the feed port 13 to the internal chamber 11 can be moved toward the discharge port 14 through the piston assembly 2 and closely matched with the extrusion chamber 12, so that the rubber material placed in the extrusion chamber 12 is pressed and transported to the discharge port 14 when the piston assembly 2 moves relative to the extrusion chamber 12, thereby realizing piston-type material suction and transmission.

[0041] In one embodiment of the present invention, the piston assembly 2 includes a rod body 21 connected to the drive assembly 3 and a piston head 22 disposed at the end of the rod body 21. The piston head 22 is adapted to the extrusion chamber 12, and when the piston head 22 moves into the extrusion chamber 12, the internal chamber 11 is separated by the piston head 22. Preferably, the piston assembly 2 is a cylindrical structure, the feed port 13 is disposed at the bottom position of the cylindrical structure, and the discharge port 14 is disposed at a side position close to the top of the cylindrical structure. The drive assembly 3 and the piston assembly 2 are sequentially arranged at the top of the piston assembly 2 from top to bottom, so that the rod body 21 of the piston assembly 2 extends vertically into the internal chamber 11. In particular, the top of the piston assembly 2 is provided with a sealing seat 4 for sealing it, the extrusion chamber 12 is directly opposite to the sealing seat 4, and is placed in the extrusion chamber 12 through the movement of the piston head 22, so that the chamber above the piston head 22 is closed to form a feeding space with only the discharge port 14. The rod body 21 of the piston assembly 2 is inserted through the sealing seat 4, and the rod body 21 can slide up and down relative to the sealing seat 4. Through the sealing treatment of the sealing seat 4, when the piston head 22 moves to the extrusion chamber 12, the chamber above the piston head 22 only retains the outlet 14 as the outlet channel under the relative closure of the piston head 22 and the sealing seat 4. When the piston head 22 moves upward, the volume of the chamber becomes smaller, resulting in an increase in pressure, which increases the flow rate of the rubber material transported along the outlet 14, ensures the extrusion-type material transportation, and avoids the problems of high-viscosity rubber material being difficult to transport and residue in the pump chamber.

[0042] Preferably, a discharge seat 5 is embedded between the sealing seat 4 and the piston assembly 2, the discharge seat 5 is connected to the internal chamber 11, and the discharge port 14 is arranged on one side of the discharge seat 5. The feed port 13 is located at the bottom of the pump body assembly 1 of the cylindrical structure, so as to better input the material from the outside to the internal chamber 11 located above, and the discharge port 14 is placed on one side close to the top and on one of the left and right sides of the discharge seat 5 embedded with the sealing seat 4 and the pump body assembly 1 and sealed therebetween, so that the reciprocating movement of the piston assembly 2 can avoid interfering with the material output of the discharge port 14 as much as possible.

[0043] Furthermore, a limiting sleeve 211 is provided on the rod body 21, and the limiting sleeve 211 is adjustably arranged on the rod body 21 located in the internal chamber 11, and abuts against the lower end surface of the sealing seat 4 through the limiting sleeve 211 to limit the rod body 21 from continuing to move upward, and correspondingly control the rising threshold of the piston head 22, thereby adjusting the output of the rubber material from the extrusion chamber 12 to the discharge port 14. By adjusting the position of the limiting sleeve 211 on the rod body 21 relative to the piston head 22, the threshold of the reciprocating movement of the piston assembly 2 along the internal chamber 11 can be controlled, thereby specifically controlling the discharge amount of the discharge port 14 during one reciprocating movement of the piston assembly 2. It should be noted that in order to ensure that the discharge amount of the discharge port 14 is highly accurate, the storage of the rubber input from the feed port 13 in the internal chamber 11 must be kept constant. The liquid level of the rubber can be controlled to always remain at one of the heights in the internal chamber 11, and the height must be at least higher than the end position of the extrusion chamber 12 that constitutes the internal chamber 11, to ensure that when the piston head 22 moves in the extrusion chamber 12, rubber is accommodated above the piston head 22.

[0044] In the present embodiment, preferably, the piston head 22 is made of elastic material, and is a flat body with small upper and lower ends and a large middle part. The cavity of the extrusion chamber 12 is a cylindrical body that matches the middle part of the flat body, and the inner diameter of the extrusion chamber 12 is smaller than the maximum outer diameter of the piston head 22, so that the piston head 22 and the extrusion chamber 12 always maintain an interference fit, which is conducive to the rapid discharge of materials by pressing. In particular, the piston head 22 can be a combination of any one of the shapes of trapezoidal bodies, cylinders or cones at both ends to ensure that the outer periphery of the middle is tightly matched with the cavity of the extrusion chamber 12. It should be noted that the outer diameter of the rod body 21 is smaller than the inner diameter of the extrusion chamber 12. When the piston assembly 2 is pressed and moved in the extrusion chamber 12, there is a storage space between the two to accommodate the rubber material, and the storage space formed is small to ensure the rapid flow of the rubber material to the discharge port 14.

[0045] The piston head 22 moves toward the feed port 13 until it is away from the end of the extrusion chamber 12, and the rubber material is input into the internal chamber 11 through the feed port 13, and at least part of the rubber material can enter the extrusion chamber 12 through the gap formed between the piston head 22 and the extrusion chamber 12 when the piston head 22 is away from the extrusion chamber 12. The piston head 22 reciprocates under the drive of the rod body 21, so that the rubber material entering the extrusion chamber 12 from the gap and part of the rubber material brought upward by the piston head 22 are sealed in the chamber above the piston head 22 when the piston head 22 enters the extrusion chamber 12.

[0046] See also Figure 1 and Figure 4The driving assembly 3 has a push rod mechanism 31. The push rod mechanism 31 is connected to the piston assembly 2, so that the output shaft of the push rod mechanism 31 is extended and retracted to push the piston assembly 2 to move back and forth along the opening direction of the internal chamber 11. The push rod mechanism 31 is preferably an electric push rod, which is driven by the precise feeding of the electric push rod, thereby driving the reciprocating movement of the piston assembly 2 mechanically connected thereto and the feeding amount is controllable, further realizing efficient and precise discharge of the material pump.

[0047] See also Figure 6 In another embodiment of the present invention, the extrusion chamber 12 can move along the layout direction of the internal chamber 11 under the reciprocating drive of the piston assembly 2 and is always located in the internal chamber 11. The piston assembly 2 reciprocates along the layout direction of the internal chamber 11, so that the extrusion chamber 12 is located near the feed port 13 to accommodate the rubber material, and moves to a position near the discharge port 14 to transport the rubber material to the discharge port 14.

[0048] It should be noted that the bushing 6 with the extrusion chamber 12 inside can be slidably placed in the internal chamber 11, and through the reciprocating movement of the piston assembly 2, the bushing 6 is correspondingly driven to move along the layout direction of the internal chamber 11, and the extrusion type pressing discharge is correspondingly realized. Among them, the piston assembly 2 can have a first end 23 and a second end 24 corresponding to the trigger bushing 6 to slide up and down, wherein the first end 23 corresponds to the piston head 22, and the second end 23 corresponds to the limit sleeve 211. And the distance between the first end 23 and the second end 24 is greater than the length of the bushing 6, so as to ensure that during the reciprocating driving process, the rubber material in the internal chamber 11 can be abutted against the bottom of the bushing 6 through the first end 23, and at this time, the piston assembly 2 moves along the discharge port 14 until the bushing 6 is at the highest position of the internal chamber 11, and the piston assembly 2 can be placed in the extrusion chamber 12 and move relatively, and the corresponding second end 24 is spaced from the top of the bushing 6 to allow the rubber material to be transported to the discharge port 14 through the interval to realize the discharge. When the piston assembly 2 moves along the feed port 13 to drive the bushing 6 to move synchronously, the first end 23 thereof is spaced apart from the bottom of the bushing 6 to allow the rubber material in the internal chamber 11 to enter the extrusion chamber 12 through the space to achieve material extraction.

[0049] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

Claims

1. A new type of feed pump, characterized in that: include: A pump body assembly, the pump body assembly comprising an internal chamber for accommodating rubber material and a feed port and a discharge port communicated with the internal chamber; an extrusion chamber is indented in the internal chamber near the discharge port, and the extrusion chamber is located between the feed port and the discharge port; The piston assembly is arranged in the internal chamber, the piston assembly can reciprocate along the opening direction of the internal chamber, and is tightly matched with the extrusion chamber so that the piston assembly can move along the opening direction of the extrusion chamber, so as to press and convey the rubber material input into the extrusion chamber from the feed port to the discharge port; a sealing seat for sealing the piston assembly is arranged on the top of the piston assembly, the extrusion chamber is directly opposite to the sealing seat, and the piston head is moved and placed in the extrusion chamber, so that the chamber above the piston head is closed to form a feeding space with only the discharge port; the rod body of the piston assembly is passed through the sealing seat, the rod body can slide up and down relative to the sealing seat, and a limit sleeve is provided on the rod body, the limit sleeve is adjustably arranged on the rod body located in the internal chamber, and abuts against the lower end surface of the sealing seat through the limit sleeve to limit the rod body from continuing to rise and move, and correspondingly controls the rising threshold of the piston head, thereby adjusting the output amount of the rubber material from the extrusion chamber to the discharge port; The driving assembly is used to drive the piston assembly to move in the internal chamber; the extrusion chamber can move along the layout direction of the internal chamber and is always located in the internal chamber under the reciprocating drive of the piston assembly, and the piston assembly reciprocates along the layout direction of the internal chamber, so that the extrusion chamber is located close to the feed port to accommodate the rubber material, and moves to a position close to the discharge port to correspondingly cooperate in conveying the rubber material to the discharge port.

2. The feed pump according to claim 1, characterized in that: The piston assembly includes a rod body connected to the drive assembly and a piston head arranged at the end of the rod body; the piston head is adapted to the extrusion chamber, and when the piston head moves into the extrusion chamber, the internal chamber is separated by the piston head.

3. The material pump according to claim 2, characterized in that: The piston assembly is a cylindrical structure, the feed port is arranged at the bottom position of the cylindrical structure, and the discharge port is arranged at a side position close to the top of the cylindrical structure; the drive assembly and the piston assembly are arranged at the top of the piston assembly in sequence from top to bottom, so that the rod body of the piston assembly extends vertically into the internal chamber.

4. The material pump according to claim 1, characterized in that: A discharge seat is embedded between the sealing seat and the piston assembly, the discharge seat is communicated with the internal chamber, and the discharge port is arranged on one side of the discharge seat.

5. The material pump according to claim 1, characterized in that: The driving assembly has a push rod mechanism, which is connected to the piston assembly, so that the output shaft of the push rod mechanism is extended and retracted to push the piston assembly to move back and forth along the opening direction of the internal chamber.

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